11239 files changed, 1682246 insertions, 522785 deletions

diff --git a/.cvsignore b/.cvsignore
deleted file mode 100644
index 76c9bc0b78..0000000000
--- a/.cvsignore
+++ /dev/null
@@ -1,52 +0,0 @@
-*.bak
-*.orig
-*.rej
-*.sav
-*~
-.*.list
-.*.time
-.ccmalloc
-.ppack
-.ext
-.git
-.svn
-.pc
-COPYING.LIB
-ChangeLog.pre-alpha
-ChangeLog.pre1_1
-ChangeLog-1.8.0
-Makefile
-README.fat-patch
-README.v6
-README.atheos
-archive
-autom4te*.cache
-automake
-beos
-config.cache
-config.h
-config.h.in
-config.log
-config.status
-configure
-libruby.so.*
-miniruby
-newdate.rb
-newver.rb
-parse.c
-patches
-patches-master
-pitest.rb
-ppack
-preview
-rbconfig.rb
-rename2.h
-repack
-riscos
-rubicon
-ruby
-ruby-man.rd.gz
-tmp
-web
-y.output
-y.tab.c
diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 0000000000..8f4b96445c
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,39 @@
+;; Copyright (c) 2018 Urabe, Shyouhei.  All rights reserved.
+;;
+;; This file is a part of  the programming language Ruby.  Permission is hereby
+;; granted, to either  redistribute and/or modify this file,  provided that the
+;; conditions mentioned  in the  file COPYING  are met.   Consult the  file for
+;; details.
+
+((nil .
+     ((indent-tabs-mode . nil)
+      (require-final-newline . t)
+      (tab-width . 8)
+      (show-trailing-whitespace . t)
+      (whitespace-line-column . 80))) ;; See also [Misc #12277]
+
+ ;; (bat-mode . ((buffer-file-coding-system . utf-8-dos)))
+
+ (ruby-mode . ((ruby-indent-level . 2)))
+
+ (rdoc-mode . ((fill-column . 74)))
+
+ (yaml-mode . ((yaml-indent-offset . 2)))
+
+ (makefile-mode . ((indent-tabs-mode . t)))
+
+ (c-mode . ((c-file-style . "ruby")))
+
+ (c++-mode . ((c-file-style . "ruby")))
+
+ (change-log-mode .
+     ((buffer-file-coding-system . us-ascii)
+      (indent-tabs-mode . t)
+      (change-log-indent-text . 2)
+      (add-log-time-format . (lambda (&optional x y)
+        (let* ((time (or x (current-time)))
+	       (system-time-locale "C")
+	       (diff (+ (cadr time) 32400))
+	       (lo (% diff 65536))
+	       (hi (+ (car time) (/ diff 65536))))
+        (format-time-string "%a %b %e %H:%M:%S %Y" (list hi lo) t)))))))
diff --git a/.document b/.document
index 230c50e387..8616203552 100644
--- a/.document
+++ b/.document
@@ -5,12 +5,42 @@
 
 # Process all the C source files
 *.c
+*.y
 
-# the lib/ directory (which has its own .document file)
+# prelude
+prelude.rb
+rbconfig.rb
+array.rb
+ast.rb
+dir.rb
+gc.rb
+integer.rb
+io.rb
+kernel.rb
+pack.rb
+trace_point.rb
+warning.rb
+ractor.rb
 
+# the lib/ directory (which has its own .document file)
 lib
 
-
 # and some of the ext/ directory (which has its own .document file)
-
 ext
+
+# rdoc files
+NEWS.md
+
+README.md
+README.ja.md
+
+COPYING
+COPYING.ja
+CONTRIBUTING.md
+
+LEGAL
+
+# win32/README.win32 linked from README.md
+win32
+
+doc
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000000..4633a7acae
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,30 @@
+root = true
+
+[*]
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+tab_width = 8
+trim_trailing_whitespace = true
+
+[*.bat]
+end_of_line = crlf
+
+[*.gemspec]
+indent_size = 2
+
+[*.rb]
+indent_size = 2
+
+[*.yml]
+indent_size = 2
+
+[{*[Mm]akefile*,*.mak,*.mk,depend}]
+indent_style = tab
+
+[enc/*]
+indent_size = 2
+
+[reg*.[ch]]
+indent_size = 2
diff --git a/.gdbinit b/.gdbinit
index f333d7b072..49380951b8 100644
--- a/.gdbinit
+++ b/.gdbinit
@@ -1,105 +1,113 @@
-if dummy_gdb_enums.special_consts
+set startup-with-shell off
+
+define hook-run
+  set $color_type = 0
+  set $color_highlite = 0
+  set $color_end = 0
+end
+
+define ruby_gdb_init
+  if !$color_type
+    set $color_type = "\033[31m"
+  end
+  if !$color_highlite
+    set $color_highlite = "\033[36m"
+  end
+  if !$color_end
+    set $color_end = "\033[m"
+  end
+  if ruby_dummy_gdb_enums.special_consts
+  end
 end
 
+# set prompt \033[36m(gdb)\033[m\040
+
 define rp
-  if (VALUE)$arg0 & RUBY_FIXNUM_FLAG
-    printf "FIXNUM: %ld\n", (long)$arg0 >> 1
+  ruby_gdb_init
+  if (VALUE)($arg0) & RUBY_FIXNUM_FLAG
+    printf "FIXNUM: %ld\n", (long)($arg0) >> 1
   else
-  if ((VALUE)$arg0 & ~(~(VALUE)0<<RUBY_SPECIAL_SHIFT)) == RUBY_SYMBOL_FLAG
-    printf "SYMBOL(%ld)\n", $arg0 >> RUBY_SPECIAL_SHIFT
+  if ((VALUE)($arg0) & ~(~(VALUE)0<<RUBY_SPECIAL_SHIFT)) == RUBY_SYMBOL_FLAG
+    set $id = (($arg0) >> RUBY_SPECIAL_SHIFT)
+    printf "%sSYMBOL%s: ", $color_type, $color_end
+    rp_id $id
   else
-  if $arg0 == RUBY_Qfalse
+  if ($arg0) == RUBY_Qfalse
     echo false\n
   else
-  if $arg0 == RUBY_Qtrue
+  if ($arg0) == RUBY_Qtrue
     echo true\n
   else
-  if $arg0 == RUBY_Qnil
+  if ($arg0) == RUBY_Qnil
     echo nil\n
   else
-  if $arg0 == RUBY_Qundef
+  if ($arg0) == RUBY_Qundef
     echo undef\n
   else
-  if (VALUE)$arg0 & RUBY_IMMEDIATE_MASK
-    echo immediate\n
+  if (VALUE)($arg0) & RUBY_IMMEDIATE_MASK
+    if ((VALUE)($arg0) & RUBY_FLONUM_MASK) == RUBY_FLONUM_FLAG
+      printf "%sFLONUM%s: %g\n", $color_type, $color_end, (double)rb_float_value($arg0)
+    else
+      echo immediate\n
+    end
   else
-  set $flags = ((struct RBasic*)$arg0)->flags
+  set $flags = ((struct RBasic*)($arg0))->flags
+  if ($flags & RUBY_FL_PROMOTED) == RUBY_FL_PROMOTED
+    printf "[PROMOTED] "
+  end
   if ($flags & RUBY_T_MASK) == RUBY_T_NONE
-    printf "T_NONE: "
-    print (struct RBasic *)$arg0
+    printf "%sT_NONE%s: ", $color_type, $color_end
+    print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_NIL
-    printf "T_NIL: "
-    print (struct RBasic *)$arg0
+    printf "%sT_NIL%s: ", $color_type, $color_end
+    print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_OBJECT
-    printf "T_OBJECT: "
-    print (struct RObject *)$arg0
+    printf "%sT_OBJECT%s: ", $color_type, $color_end
+    print ((struct RObject *)($arg0))->basic
+    if ($flags & ROBJECT_EMBED)
+      print/x *((VALUE*)((struct RObject*)($arg0))->as.ary) @ (ROBJECT_EMBED_LEN_MAX+0)
+    else
+      print (((struct RObject *)($arg0))->as.heap)
+      if (((struct RObject*)($arg0))->as.heap.numiv) > 0
+        print/x *(((struct RObject*)($arg0))->as.heap.ivptr) @ (((struct RObject*)($arg0))->as.heap.numiv)
+      end
+    end
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_CLASS
-    printf "T_CLASS: "
-    print (struct RClass *)$arg0
+    printf "%sT_CLASS%s%s: ", $color_type, ($flags & RUBY_FL_SINGLETON) ? "*" : "", $color_end
+    rp_class $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_ICLASS
-    printf "T_ICLASS: "
-    print (struct RClass *)$arg0
+    printf "%sT_ICLASS%s: ", $color_type, $color_end
+    rp_class $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_MODULE
-    printf "T_MODULE: "
-    print (struct RClass *)$arg0
+    printf "%sT_MODULE%s: ", $color_type, $color_end
+    rp_class $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FLOAT
-    printf "T_FLOAT: %.16g ", (((struct RFloat*)$arg0)->float_value)
-    print (struct RFloat *)$arg0
+    printf "%sT_FLOAT%s: %.16g ", $color_type, $color_end, (((struct RFloat*)($arg0))->float_value)
+    print (struct RFloat *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_STRING
-    printf "T_STRING: "
-    set print address off
-    output (char *)(($flags & RUBY_FL_USER1) ? \
-	    ((struct RString*)$arg0)->as.heap.ptr : \
-	    ((struct RString*)$arg0)->as.ary)
-    set print address on
-    printf " bytesize:%ld ", ($flags & RUBY_FL_USER1) ? \
-            ((struct RString*)$arg0)->as.heap.len : \
-            (($flags & (RUBY_FL_USER2|RUBY_FL_USER3|RUBY_FL_USER4|RUBY_FL_USER5|RUBY_FL_USER6)) >> RUBY_FL_USHIFT+2)
-    if !($flags & RUBY_FL_USER1)
-      printf "(embed) "
-    else
-      if ($flags & RUBY_FL_USER2)
-        printf "(shared) "
-      end
-      if ($flags & RUBY_FL_USER3)
-        printf "(assoc) "
-      end
-    end
-    printf "encoding:%d ", ($flags & RUBY_ENCODING_MASK) >> RUBY_ENCODING_SHIFT
-    if ($flags & RUBY_ENC_CODERANGE_MASK) == 0
-      printf "coderange:unknown "
-    else
-    if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_7BIT
-      printf "coderange:7bit "
-    else
-    if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_VALID
-      printf "coderange:valid "
-    else
-      printf "coderange:broken "
-    end
-    end
-    end
-    print (struct RString *)$arg0
+    printf "%sT_STRING%s: ", $color_type, $color_end
+    rp_string $arg0 $flags
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_REGEXP
-    set $regsrc = ((struct RRegexp*)$arg0)->src
+    set $regsrc = ((struct RRegexp*)($arg0))->src
     set $rsflags = ((struct RBasic*)$regsrc)->flags
-    printf "T_REGEXP: "
+    printf "%sT_REGEXP%s: ", $color_type, $color_end
+    set $len = ($rsflags & RUBY_FL_USER1) ? \
+            ((struct RString*)$regsrc)->as.heap.len : \
+            (($rsflags & (RUBY_FL_USER2|RUBY_FL_USER3|RUBY_FL_USER4|RUBY_FL_USER5|RUBY_FL_USER6)) >> RUBY_FL_USHIFT+2)
     set print address off
-    output (char *)(($rsflags & RUBY_FL_USER1) ? \
+    output *(char *)(($rsflags & RUBY_FL_USER1) ? \
 	    ((struct RString*)$regsrc)->as.heap.ptr : \
-	    ((struct RString*)$regsrc)->as.ary)
+	    ((struct RString*)$regsrc)->as.ary) @ $len
     set print address on
-    printf " len:%ld ", ($rsflags & RUBY_FL_USER1) ? \
-            ((struct RString*)$regsrc)->as.heap.len : \
-            (($rsflags & (RUBY_FL_USER2|RUBY_FL_USER3|RUBY_FL_USER4|RUBY_FL_USER5|RUBY_FL_USER6)) >> RUBY_FL_USHIFT+2)
+    printf " len:%ld ", $len
     if $flags & RUBY_FL_USER6
       printf "(none) "
     end
@@ -110,122 +118,161 @@ define rp
       printf "(fixed) "
     end
     printf "encoding:%d ", ($flags & RUBY_ENCODING_MASK) >> RUBY_ENCODING_SHIFT
-    print (struct RRegexp *)$arg0
+    print (struct RRegexp *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_ARRAY
     if ($flags & RUBY_FL_USER1)
       set $len = (($flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
-      printf "T_ARRAY: len=%ld ", $len
+      printf "%sT_ARRAY%s: len=%ld ", $color_type, $color_end, $len
       printf "(embed) "
       if ($len == 0)
 	printf "{(empty)} "
       else
-	output/x *((VALUE*)((struct RArray*)$arg0)->as.ary) @ $len
+	print/x *((VALUE*)((struct RArray*)($arg0))->as.ary) @ $len
 	printf " "
       end
     else
-      set $len = ((struct RArray*)$arg0)->as.heap.len
-      printf "T_ARRAY: len=%ld ", $len
+      set $len = ((struct RArray*)($arg0))->as.heap.len
+      printf "%sT_ARRAY%s: len=%ld ", $color_type, $color_end, $len
       if ($flags & RUBY_FL_USER2)
 	printf "(shared) shared="
-	output/x ((struct RArray*)$arg0)->as.heap.aux.shared
+	output/x ((struct RArray*)($arg0))->as.heap.aux.shared_root
 	printf " "
       else
-	printf "(ownership) capa=%ld ", ((struct RArray*)$arg0)->as.heap.aux.capa
+	printf "(ownership) capa=%ld ", ((struct RArray*)($arg0))->as.heap.aux.capa
       end
       if ($len == 0)
 	printf "{(empty)} "
       else
-	output/x *((VALUE*)((struct RArray*)$arg0)->as.heap.ptr) @ $len
+	print/x *((VALUE*)((struct RArray*)($arg0))->as.heap.ptr) @ $len
 	printf " "
       end
     end
-    print (struct RArray *)$arg0
+    print (struct RArray *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FIXNUM
-    printf "T_FIXNUM: "
-    print (struct RBasic *)$arg0
+    printf "%sT_FIXNUM%s: ", $color_type, $color_end
+    print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_HASH
-    printf "T_HASH: ",
-    if ((struct RHash *)$arg0)->ntbl
-      printf "len=%ld ", ((struct RHash *)$arg0)->ntbl->num_entries
+    printf "%sT_HASH%s: ", $color_type, $color_end,
+    if (((struct RHash *)($arg0))->basic.flags & RHASH_ST_TABLE_FLAG)
+      printf "st len=%ld ", ((struct RHash *)($arg0))->as.st->num_entries
+    else
+      printf "li len=%ld bound=%ld ", \
+        ((((struct RHash *)($arg0))->basic.flags & RHASH_AR_TABLE_SIZE_MASK) >> RHASH_AR_TABLE_SIZE_SHIFT), \
+        ((((struct RHash *)($arg0))->basic.flags & RHASH_AR_TABLE_BOUND_MASK) >> RHASH_AR_TABLE_BOUND_SHIFT)
     end
-    print (struct RHash *)$arg0
+    print (struct RHash *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_STRUCT
-    printf "T_STRUCT: len=%ld ", \
-      (($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
+    set $len = (($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
        ($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) >> (RUBY_FL_USHIFT+1) : \
-       ((struct RStruct *)$arg0)->as.heap.len)
-    print (struct RStruct *)$arg0
-    x/xw (($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
-          ((struct RStruct *)$arg0)->as.ary : \
-          ((struct RStruct *)$arg0)->as.heap.ptr)
+       ((struct RStruct *)($arg0))->as.heap.len)
+    printf "%sT_STRUCT%s: len=%ld ", $color_type, $color_end, $len
+    print (struct RStruct *)($arg0)
+    output/x *(($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
+              ((struct RStruct *)($arg0))->as.ary : \
+              ((struct RStruct *)($arg0))->as.heap.ptr) @ $len
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_BIGNUM
-    printf "T_BIGNUM: sign=%d len=%ld ", \
-      (($flags & RUBY_FL_USER1) != 0), \
-      (($flags & RUBY_FL_USER2) ? \
-       ($flags & (RUBY_FL_USER5|RUBY_FL_USER4|RUBY_FL_USER3)) >> (RUBY_FL_USHIFT+3) : \
-       ((struct RBignum*)$arg0)->as.heap.len)
-    if $flags & RUBY_FL_USER2
-      printf "(embed) "
-    end
-    print (struct RBignum *)$arg0
-    x/xw (($flags & RUBY_FL_USER2) ? \
-          ((struct RBignum*)$arg0)->as.ary : \
-          ((struct RBignum*)$arg0)->as.heap.digits)
+    rp_bignum $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_RATIONAL
-    printf "T_RATIONAL: "
-    print (struct RRational *)$arg0
+    printf "%sT_RATIONAL%s: ", $color_type, $color_end
+    print (struct RRational *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_COMPLEX
-    printf "T_COMPLEX: "
-    print (struct RComplex *)$arg0
+    printf "%sT_COMPLEX%s: ", $color_type, $color_end
+    print (struct RComplex *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FILE
-    printf "T_FILE: "
-    print (struct RFile *)$arg0
-    output *((struct RFile *)$arg0)->fptr
+    printf "%sT_FILE%s: ", $color_type, $color_end
+    print (struct RFile *)($arg0)
+    output *((struct RFile *)($arg0))->fptr
     printf "\n"
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_TRUE
-    printf "T_TRUE: "
-    print (struct RBasic *)$arg0
+    printf "%sT_TRUE%s: ", $color_type, $color_end
+    print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FALSE
-    printf "T_FALSE: "
-    print (struct RBasic *)$arg0
+    printf "%sT_FALSE%s: ", $color_type, $color_end
+    print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_DATA
-    printf "T_DATA: "
-    print (struct RData *)$arg0
+    if ((struct RTypedData *)($arg0))->typed_flag == 1
+      printf "%sT_DATA%s(%s): ", $color_type, $color_end, ((struct RTypedData *)($arg0))->type->wrap_struct_name
+      print (struct RTypedData *)($arg0)
+    else
+      printf "%sT_DATA%s: ", $color_type, $color_end
+      print (struct RData *)($arg0)
+    end
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_MATCH
-    printf "T_MATCH: "
-    print (struct RMatch *)$arg0
+    printf "%sT_MATCH%s: ", $color_type, $color_end
+    print (struct RMatch *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_SYMBOL
-    printf "T_SYMBOL: "
-    print (struct RBasic *)$arg0
+    printf "%sT_SYMBOL%s: ", $color_type, $color_end
+    print (struct RSymbol *)($arg0)
+    set $id_type = ((struct RSymbol *)($arg0))->id & RUBY_ID_SCOPE_MASK
+    if $id_type == RUBY_ID_LOCAL
+      printf "l"
+    else
+    if $id_type == RUBY_ID_INSTANCE
+      printf "i"
+    else
+    if $id_type == RUBY_ID_GLOBAL
+      printf "G"
+    else
+    if $id_type == RUBY_ID_ATTRSET
+      printf "a"
+    else
+    if $id_type == RUBY_ID_CONST
+      printf "C"
+    else
+    if $id_type == RUBY_ID_CLASS
+      printf "c"
+    else
+      printf "j"
+    end
+    end
+    end
+    end
+    end
+    end
+    set $id_fstr = ((struct RSymbol *)($arg0))->fstr
+    rp_string $id_fstr
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_UNDEF
-    printf "T_UNDEF: "
-    print (struct RBasic *)$arg0
+    printf "%sT_UNDEF%s: ", $color_type, $color_end
+    print (struct RBasic *)($arg0)
+  else
+  if ($flags & RUBY_T_MASK) == RUBY_T_IMEMO
+    printf "%sT_IMEMO%s(", $color_type, $color_end
+    output (enum imemo_type)(($flags>>RUBY_FL_USHIFT)&RUBY_IMEMO_MASK)
+    printf "): "
+    rp_imemo $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_NODE
-    printf "T_NODE("
+    printf "%sT_NODE%s(", $color_type, $color_end
     output (enum node_type)(($flags&RUBY_NODE_TYPEMASK)>>RUBY_NODE_TYPESHIFT)
     printf "): "
-    print *(NODE *)$arg0
+    print *(NODE *)($arg0)
+  else
   if ($flags & RUBY_T_MASK) == RUBY_T_ZOMBIE
-    printf "T_ZOMBIE: "
-    print (struct RData *)$arg0
+    printf "%sT_ZOMBIE%s: ", $color_type, $color_end
+    print (struct RData *)($arg0)
+  else
+  if ($flags & RUBY_T_MASK) == RUBY_T_MOVED
+    printf "%sT_MOVED%s: ", $color_type, $color_end
+    print *(struct RMoved *)$arg0
   else
-    printf "unknown: "
-    print (struct RBasic *)$arg0
+    printf "%sunknown%s: ", $color_type, $color_end
+    print (struct RBasic *)($arg0)
+  end
+  end
   end
   end
   end
@@ -263,22 +310,312 @@ document rp
   Print a Ruby's VALUE.
 end
 
+define rp_id
+  set $id = (ID)$arg0
+  if $id == '!' || $id == '+' || $id == '-' || $id == '*' || $id == '/' || $id == '%' || $id == '<' || $id == '>' || $id == '`'
+    printf "(:%c)\n", $id
+  else
+  if $id == idDot2
+    printf "(:..)\n"
+  else
+  if $id == idDot3
+    printf "(:...)\n"
+  else
+  if $id == idUPlus
+    printf "(:+@)\n"
+  else
+  if $id == idUMinus
+    printf "(:-@)\n"
+  else
+  if $id == idPow
+    printf "(:**)\n"
+  else
+  if $id == idCmp
+    printf "(:<=>)\n"
+  else
+  if $id == idLTLT
+    printf "(:<<)\n"
+  else
+  if $id == idGTGT
+    printf "(:>>)\n"
+  else
+  if $id == idLE
+    printf "(:<=)\n"
+  else
+  if $id == idGE
+    printf "(:>=)\n"
+  else
+  if $id == idEq
+    printf "(:==)\n"
+  else
+  if $id == idEqq
+    printf "(:===)\n"
+  else
+  if $id == idNeq
+    printf "(:!=)\n"
+  else
+  if $id == idEqTilde
+    printf "(:=~)\n"
+  else
+  if $id == idNeqTilde
+    printf "(:!~)\n"
+  else
+  if $id == idAREF
+    printf "(:[])\n"
+  else
+  if $id == idASET
+    printf "(:[]=)\n"
+  else
+  if $id == idCOLON2
+    printf "(:'::')\n"
+  else
+  if $id == idANDOP
+    printf "(:&&)\n"
+  else
+  if $id == idOROP
+    printf "(:||)\n"
+  else
+  if $id == idANDDOT
+    printf "(:&.)\n"
+  else
+    if $id <= tLAST_OP_ID
+      printf "O"
+    else
+      set $id_type = $id & RUBY_ID_SCOPE_MASK
+      if $id_type == RUBY_ID_LOCAL
+        printf "l"
+      else
+      if $id_type == RUBY_ID_INSTANCE
+        printf "i"
+      else
+      if $id_type == RUBY_ID_GLOBAL
+        printf "G"
+      else
+      if $id_type == RUBY_ID_ATTRSET
+        printf "a"
+      else
+      if $id_type == RUBY_ID_CONST
+        printf "C"
+      else
+      if $id_type == RUBY_ID_CLASS
+        printf "c"
+      else
+        printf "j"
+      end
+      end
+      end
+      end
+      end
+      end
+    end
+    printf "(%ld): ", $id
+    print_id $id
+    echo \n
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+end
+document rp_id
+  Print an ID.
+end
+
+define output_string
+  set $flags = ((struct RBasic*)($arg0))->flags
+  set $len = ($flags & RUBY_FL_USER1) ? \
+          ((struct RString*)($arg0))->as.heap.len : \
+          (($flags & (RUBY_FL_USER2|RUBY_FL_USER3|RUBY_FL_USER4|RUBY_FL_USER5|RUBY_FL_USER6)) >> RUBY_FL_USHIFT+2)
+  if $len > 0
+    output *(char *)(($flags & RUBY_FL_USER1) ? \
+	    ((struct RString*)($arg0))->as.heap.ptr : \
+	    ((struct RString*)($arg0))->as.ary) @ $len
+  else
+    output ""
+  end
+end
+
+define print_string
+  set $flags = ((struct RBasic*)($arg0))->flags
+  set $len = ($flags & RUBY_FL_USER1) ? \
+          ((struct RString*)($arg0))->as.heap.len : \
+          (($flags & (RUBY_FL_USER2|RUBY_FL_USER3|RUBY_FL_USER4|RUBY_FL_USER5|RUBY_FL_USER6)) >> RUBY_FL_USHIFT+2)
+  if $len > 0
+    printf "%s", *(char *)(($flags & RUBY_FL_USER1) ? \
+	    ((struct RString*)($arg0))->as.heap.ptr : \
+	    ((struct RString*)($arg0))->as.ary) @ $len
+  end
+end
+
+define rp_string
+  output_string $arg0
+  printf " bytesize:%ld ", $len
+  if !($flags & RUBY_FL_USER1)
+    printf "(embed) "
+  else
+    if ($flags & RUBY_FL_USER2)
+      printf "(shared) "
+    end
+    if ($flags & RUBY_FL_USER3)
+      printf "(assoc) "
+    end
+  end
+  printf "encoding:%d ", ($flags & RUBY_ENCODING_MASK) >> RUBY_ENCODING_SHIFT
+  if ($flags & RUBY_ENC_CODERANGE_MASK) == 0
+    printf "coderange:unknown "
+  else
+  if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_7BIT
+    printf "coderange:7bit "
+  else
+  if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_VALID
+    printf "coderange:valid "
+  else
+    printf "coderange:broken "
+  end
+  end
+  end
+  print (struct RString *)($arg0)
+end
+document rp_string
+  Print the content of a String.
+end
+
+define rp_bignum
+  set $flags = ((struct RBignum*)($arg0))->basic.flags
+  set $len = (($flags & RUBY_FL_USER2) ? \
+       ($flags & (RUBY_FL_USER5|RUBY_FL_USER4|RUBY_FL_USER3)) >> (RUBY_FL_USHIFT+3) : \
+       ((struct RBignum*)($arg0))->as.heap.len)
+  printf "%sT_BIGNUM%s: sign=%d len=%ld ", $color_type, $color_end, \
+         (($flags & RUBY_FL_USER1) != 0), $len
+  if $flags & RUBY_FL_USER2
+    printf "(embed) "
+  end
+  print (struct RBignum *)($arg0)
+  set $ptr = (($flags & RUBY_FL_USER2) ? \
+              ((struct RBignum*)($arg0))->as.ary : \
+              ((struct RBignum*)($arg0))->as.heap.digits)
+  set $len = $len-1
+  printf "0x%x", $ptr[$len]
+  while $len > 0
+    set $len = $len-1
+    set $val = $ptr[$len]
+    set $w = sizeof($ptr[0])
+    printf "_"
+    if $w > 8
+      printf "%.32x", $val
+    else
+    if $w > 4
+      printf "%.16x", $val
+    else
+    if $w > 2
+      printf "%.8x", $val
+    else
+    if $w > 1
+      printf "%.4x", $val
+    else
+      printf "%.2x", $val
+    end
+    end
+    end
+    end
+  end
+  printf "\n"
+end
+document rp_bignum
+  Print the content of a Bignum.
+end
+
+define rp_class
+  printf "(struct RClass *) %p", (void*)$arg0
+  if ((struct RClass *)($arg0))->ptr.origin_ != $arg0
+    printf " -> %p", ((struct RClass *)($arg0))->ptr.origin_
+  end
+  printf "\n"
+  rb_classname $arg0
+  print/x *(struct RClass *)($arg0)
+  print *((struct RClass *)($arg0))->ptr
+end
+document rp_class
+  Print the content of a Class/Module.
+end
+
+define rp_imemo
+  set $flags = (enum imemo_type)((((struct RBasic *)($arg0))->flags >> RUBY_FL_USHIFT) & RUBY_IMEMO_MASK)
+  if $flags == imemo_cref
+    printf "(rb_cref_t *) %p\n", (void*)$arg0
+    print *(rb_cref_t *)$arg0
+  else
+  if $flags == imemo_svar
+    printf "(struct vm_svar *) %p\n", (void*)$arg0
+    print *(struct vm_svar *)$arg0
+  else
+  if $flags == imemo_throw_data
+    printf "(struct vm_throw_data *) %p\n", (void*)$arg0
+    print *(struct vm_throw_data *)$arg0
+  else
+  if $flags == imemo_ifunc
+    printf "(struct vm_ifunc *) %p\n", (void*)$arg0
+    print *(struct vm_ifunc *)$arg0
+  else
+  if $flags == imemo_memo
+    printf "(struct MEMO *) %p\n", (void*)$arg0
+    print *(struct MEMO *)$arg0
+  else
+  if $flags == imemo_ment
+    printf "(rb_method_entry_t *) %p\n", (void*)$arg0
+    print *(rb_method_entry_t *)$arg0
+  else
+  if $flags == imemo_iseq
+    printf "(rb_iseq_t *) %p\n", (void*)$arg0
+    print *(rb_iseq_t *)$arg0
+  else
+    printf "(struct RIMemo *) %p\n", (void*)$arg0
+    print *(struct RIMemo *)$arg0
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+end
+document rp_imemo
+  Print the content of a memo
+end
+
 define nd_type
-  print (enum node_type)((((NODE*)$arg0)->flags&RUBY_NODE_TYPEMASK)>>RUBY_NODE_TYPESHIFT)
+  print (enum node_type)((((NODE*)($arg0))->flags&RUBY_NODE_TYPEMASK)>>RUBY_NODE_TYPESHIFT)
 end
 document nd_type
   Print a Ruby' node type.
 end
 
 define nd_file
-  print ((NODE*)$arg0)->nd_file
+  print ((NODE*)($arg0))->nd_file
 end
 document nd_file
   Print the source file name of a node.
 end
 
 define nd_line
-  print ((unsigned int)((((NODE*)$arg0)->flags>>RUBY_NODE_LSHIFT)&RUBY_NODE_LMASK))
+  print ((unsigned int)((((NODE*)($arg0))->flags>>RUBY_NODE_LSHIFT)&RUBY_NODE_LMASK))
 end
 document nd_line
   Print the source line number of a node.
@@ -287,274 +624,728 @@ end
 # Print members of ruby node.
 
 define nd_head
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 define nd_alen
-  printf "u2.argc: "
-  p $arg0.u2.argc
+  printf "%su2.argc%s: ", $color_highlite, $color_end
+  p ($arg0).u2.argc
 end
 
 define nd_next
-  printf "u3.node: "
-  rp $arg0.u3.node
+  printf "%su3.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.node
 end
 
 
 define nd_cond
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 define nd_body
-  printf "u2.node: "
-  rp $arg0.u2.node
+  printf "%su2.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.node
 end
 
 define nd_else
-  printf "u3.node: "
-  rp $arg0.u3.node
+  printf "%su3.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.node
 end
 
 
 define nd_orig
-  printf "u3.value: "
-  rp $arg0.u3.value
+  printf "%su3.value%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.value
 end
 
 
 define nd_resq
-  printf "u2.node: "
-  rp $arg0.u2.node
+  printf "%su2.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.node
 end
 
 define nd_ensr
-  printf "u3.node: "
-  rp $arg0.u3.node
+  printf "%su3.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.node
 end
 
 
 define nd_1st
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 define nd_2nd
-  printf "u2.node: "
-  rp $arg0.u2.node
+  printf "%su2.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.node
 end
 
 
 define nd_stts
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 
 define nd_entry
-  printf "u3.entry: "
-  p $arg0.u3.entry
+  printf "%su3.entry%s: ", $color_highlite, $color_end
+  p ($arg0).u3.entry
 end
 
 define nd_vid
-  printf "u1.id: "
-  p $arg0.u1.id
+  printf "%su1.id%s: ", $color_highlite, $color_end
+  p ($arg0).u1.id
 end
 
 define nd_cflag
-  printf "u2.id: "
-  p $arg0.u2.id
+  printf "%su2.id%s: ", $color_highlite, $color_end
+  p ($arg0).u2.id
 end
 
 define nd_cval
-  printf "u3.value: "
-  rp $arg0.u3.value
-end
-
-
-define nd_cnt
-  printf "u3.cnt: "
-  p $arg0.u3.cnt
+  printf "%su3.value%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.value
 end
 
 define nd_tbl
-  printf "u1.tbl: "
-  p $arg0.u1.tbl
+  printf "%su1.tbl%s: ", $color_highlite, $color_end
+  p ($arg0).u1.tbl
 end
 
 
 define nd_var
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 define nd_ibdy
-  printf "u2.node: "
-  rp $arg0.u2.node
+  printf "%su2.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.node
 end
 
 define nd_iter
-  printf "u3.node: "
-  rp $arg0.u3.node
+  printf "%su3.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.node
 end
 
 
 define nd_value
-  printf "u2.node: "
-  rp $arg0.u2.node
+  printf "%su2.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.node
 end
 
 define nd_aid
-  printf "u3.id: "
-  p $arg0.u3.id
+  printf "%su3.id%s: ", $color_highlite, $color_end
+  p ($arg0).u3.id
 end
 
 
 define nd_lit
-  printf "u1.value: "
-  rp $arg0.u1.value
-end
-
-
-define nd_frml
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.value%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.value
 end
 
 define nd_rest
-  printf "u2.argc: "
-  p $arg0.u2.argc
+  printf "%su2.argc%s: ", $color_highlite, $color_end
+  p ($arg0).u2.argc
 end
 
 define nd_opt
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 
 define nd_recv
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 define nd_mid
-  printf "u2.id: "
-  p $arg0.u2.id
+  printf "%su2.id%s: ", $color_highlite, $color_end
+  p ($arg0).u2.id
 end
 
 define nd_args
-  printf "u3.node: "
-  rp $arg0.u3.node
-end
-
-
-define nd_noex
-  printf "u1.id: "
-  p $arg0.u1.id
+  printf "%su3.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.node
 end
 
 define nd_defn
-  printf "u3.node: "
-  rp $arg0.u3.node
+  printf "%su3.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.node
 end
 
 
 define nd_old
-  printf "u1.id: "
-  p $arg0.u1.id
+  printf "%su1.id%s: ", $color_highlite, $color_end
+  p ($arg0).u1.id
 end
 
 define nd_new
-  printf "u2.id: "
-  p $arg0.u2.id
-end
-
-
-define nd_cfnc
-  printf "u1.cfunc: "
-  p $arg0.u1.cfunc
-end
-
-define nd_argc
-  printf "u2.argc: "
-  p $arg0.u2.argc
+  printf "%su2.id%s: ", $color_highlite, $color_end
+  p ($arg0).u2.id
 end
 
 
 define nd_cname
-  printf "u1.id: "
-  p $arg0.u1.id
+  printf "%su1.id%s: ", $color_highlite, $color_end
+  p ($arg0).u1.id
 end
 
 define nd_super
-  printf "u3.node: "
-  rp $arg0.u3.node
+  printf "%su3.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u3.node
 end
 
 
 define nd_modl
-  printf "u1.id: "
-  p $arg0.u1.id
+  printf "%su1.id%s: ", $color_highlite, $color_end
+  p ($arg0).u1.id
 end
 
 define nd_clss
-  printf "u1.value: "
-  rp $arg0.u1.value
+  printf "%su1.value%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.value
 end
 
 
 define nd_beg
-  printf "u1.node: "
-  rp $arg0.u1.node
+  printf "%su1.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u1.node
 end
 
 define nd_end
-  printf "u2.node: "
-  rp $arg0.u2.node
+  printf "%su2.node%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.node
 end
 
 define nd_state
-  printf "u3.state: "
-  p $arg0.u3.state
+  printf "%su3.state%s: ", $color_highlite, $color_end
+  p ($arg0).u3.state
 end
 
 define nd_rval
-  printf "u2.value: "
-  rp $arg0.u2.value
+  printf "%su2.value%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.value
 end
 
 
 define nd_nth
-  printf "u2.argc: "
-  p $arg0.u2.argc
+  printf "%su2.argc%s: ", $color_highlite, $color_end
+  p ($arg0).u2.argc
 end
 
 
 define nd_tag
-  printf "u1.id: "
-  p $arg0.u1.id
+  printf "%su1.id%s: ", $color_highlite, $color_end
+  p ($arg0).u1.id
 end
 
 define nd_tval
-  printf "u2.value: "
-  rp $arg0.u2.value
+  printf "%su2.value%s: ", $color_highlite, $color_end
+  rp ($arg0).u2.value
+end
+
+define nd_tree
+  set $buf = (struct RString *)rb_str_buf_new(0)
+  call dump_node((VALUE)($buf), rb_str_tmp_new(0), 0, ($arg0))
+  printf "%s\n", $buf->as.heap.ptr
 end
 
 define rb_p
   call rb_p($arg0)
 end
 
+define rb_numtable_entry
+  set $rb_numtable_tbl = $arg0
+  set $rb_numtable_id = (st_data_t)$arg1
+  set $rb_numtable_key = 0
+  set $rb_numtable_rec = 0
+  if $rb_numtable_tbl->entries_packed
+    set $rb_numtable_p = $rb_numtable_tbl->as.packed.bins
+    while $rb_numtable_p && $rb_numtable_p < $rb_numtable_tbl->as.packed.bins+$rb_numtable_tbl->num_entries
+      if $rb_numtable_p.k == $rb_numtable_id
+	set $rb_numtable_key = $rb_numtable_p.k
+	set $rb_numtable_rec = $rb_numtable_p.v
+	set $rb_numtable_p = 0
+      else
+	set $rb_numtable_p = $rb_numtable_p + 1
+      end
+    end
+  else
+    set $rb_numtable_p = $rb_numtable_tbl->as.big.bins[st_numhash($rb_numtable_id) % $rb_numtable_tbl->num_bins]
+    while $rb_numtable_p
+      if $rb_numtable_p->key == $rb_numtable_id
+	set $rb_numtable_key = $rb_numtable_p->key
+	set $rb_numtable_rec = $rb_numtable_p->record
+	set $rb_numtable_p = 0
+      else
+	set $rb_numtable_p = $rb_numtable_p->next
+      end
+    end
+  end
+end
+
 define rb_id2name
-  call rb_id2name($arg0)
+  ruby_gdb_init
+  printf "%sID%s: ", $color_type, $color_end
+  rp_id $arg0
+end
+document rb_id2name
+  Print the name of id
+end
+
+define rb_method_entry
+  set $rb_method_entry_klass = (struct RClass *)$arg0
+  set $rb_method_entry_id = (ID)$arg1
+  set $rb_method_entry_me = (rb_method_entry_t *)0
+  while !$rb_method_entry_me && $rb_method_entry_klass
+    rb_numtable_entry $rb_method_entry_klass->m_tbl_wrapper->tbl $rb_method_entry_id
+    set $rb_method_entry_me = (rb_method_entry_t *)$rb_numtable_rec
+    if !$rb_method_entry_me
+      set $rb_method_entry_klass = (struct RClass *)RCLASS_SUPER($rb_method_entry_klass)
+    end
+  end
+  if $rb_method_entry_me
+    print *$rb_method_entry_klass
+    print *$rb_method_entry_me
+  else
+    echo method not found\n
+  end
+end
+document rb_method_entry
+  Search method entry by class and id
 end
 
 define rb_classname
-  call classname($arg0)
-  rb_p $
-  print *(struct RClass*)$arg0
+  # up to 128bit int
+  set $rb_classname = rb_mod_name($arg0)
+  if $rb_classname != RUBY_Qnil
+    rp $rb_classname
+  else
+    echo anonymous class/module\n
+  end
+end
+
+define rb_ancestors
+  set $rb_ancestors_module = $arg0
+  while $rb_ancestors_module
+    rp_class $rb_ancestors_module
+    set $rb_ancestors_module = RCLASS_SUPER($rb_ancestors_module)
+  end
+end
+document rb_ancestors
+  Print ancestors.
 end
 
 define rb_backtrace
   call rb_backtrace()
 end
+
+define iseq
+  if ruby_dummy_gdb_enums.special_consts
+  end
+  if ($arg0)->type == ISEQ_ELEMENT_NONE
+    echo [none]\n
+  end
+  if ($arg0)->type == ISEQ_ELEMENT_LABEL
+    print *(LABEL*)($arg0)
+  end
+  if ($arg0)->type == ISEQ_ELEMENT_INSN
+    print *(INSN*)($arg0)
+    if ((INSN*)($arg0))->insn_id != YARVINSN_jump
+      set $i = 0
+      set $operand_size = ((INSN*)($arg0))->operand_size
+      set $operands = ((INSN*)($arg0))->operands
+      while $i < $operand_size
+	rp $operands[$i++]
+      end
+    end
+  end
+  if ($arg0)->type == ISEQ_ELEMENT_ADJUST
+    print *(ADJUST*)($arg0)
+  end
+end
+
+define rb_ps
+  rb_ps_vm ruby_current_vm_ptr
+end
+document rb_ps
+Dump all threads and their callstacks
+end
+
+define rb_ps_vm
+  print $ps_vm = (rb_vm_t*)$arg0
+  set $ps_thread_ln = $ps_vm->living_threads.n.next
+  set $ps_thread_ln_last = $ps_vm->living_threads.n.prev
+  while 1
+    set $ps_thread_th = (rb_thread_t *)$ps_thread_ln
+    set $ps_thread = (VALUE)($ps_thread_th->self)
+    rb_ps_thread $ps_thread
+    if $ps_thread_ln == $ps_thread_ln_last
+      loop_break
+    end
+    set $ps_thread_ln = $ps_thread_ln->next
+  end
+end
+document rb_ps_vm
+Dump all threads in a (rb_vm_t*) and their callstacks
+end
+
+define print_lineno
+  set $cfp = $arg0
+  set $iseq = $cfp->iseq
+  set $pos = $cfp->pc - $iseq->body->iseq_encoded
+  if $pos != 0
+    set $pos = $pos - 1
+  end
+
+  set $index = 0
+  set $size = $iseq->body->insns_info.size
+  set $table = $iseq->body->insns_info.body
+  set $positions = $iseq->body->insns_info.positions
+  #printf "size: %d\n", $size
+  if $size == 0
+  else
+  if $size == 1
+    printf "%d", $table[0].line_no
+  else
+    if $positions
+      # get_insn_info_linear_search
+      set $index = 1
+      while $index < $size
+        #printf "table[%d]: position: %d, line: %d, pos: %d\n", $i, $positions[$i], $table[$i].line_no, $pos
+        if $positions[$index] > $pos
+          loop_break
+        end
+        set $index = $index + 1
+        if $positions[$index] == $pos
+          loop_break
+        end
+      end
+    else
+      # get_insn_info_succinct_bitvector
+      set $sd = $iseq->body->insns_info.succ_index_table
+      set $immediate_table_size = sizeof($sd->imm_part) / sizeof(uint64_t) * 9
+      if $pos < $immediate_table_size
+        set $i = $pos / 9
+        set $j = $pos % 9
+        set $index = ((int)($sd->imm_part[$i] >> ($j * 7))) & 0x7f
+      else
+        set $block_index = ($pos - $immediate_table_size) / 512
+        set $block = &$sd->succ_part[$block_index]
+        set $block_bit_index = ($pos - $immediate_table_size) % 512
+        set $small_block_index = $block_bit_index / 64
+        set $small_block_popcount = $small_block_index == 0 ? 0 : (((int)($block->small_block_ranks >> (($small_block_index - 1) * 9))) & 0x1ff)
+        set $x = $block->bits[$small_block_index] << (63 - $block_bit_index % 64)
+        set $x = ($x & 0x5555555555555555) + ($x >> 1 & 0x5555555555555555)
+        set $x = ($x & 0x3333333333333333) + ($x >> 2 & 0x3333333333333333)
+        set $x = ($x & 0x0707070707070707) + ($x >> 4 & 0x0707070707070707)
+        set $x = ($x & 0x001f001f001f001f) + ($x >> 8 & 0x001f001f001f001f)
+        set $x = ($x & 0x0000003f0000003f) + ($x >>16 & 0x0000003f0000003f)
+        set $popcnt = ($x & 0x7f) + ($x >>32 & 0x7f)
+        set $index = $block->rank + $small_block_popcount + $popcnt
+      end
+    end
+    printf "%d", $table[$index-1].line_no
+  end
+  end
+end
+
+define check_method_entry
+  set $imemo = (struct RBasic *)$arg0
+  if $imemo != RUBY_Qfalse
+    set $type = ($imemo->flags >> 12) & 0x07
+    if $type == imemo_ment
+      set $me = (rb_callable_method_entry_t *)$imemo
+    else
+    if $type == imemo_svar
+      set $imemo = ((struct vm_svar *)$imemo)->cref_or_me
+      check_method_entry $imemo
+    end
+    end
+  end
+end
+
+define print_id
+  set $id = $arg0
+  # rb_id_to_serial
+  if $id > tLAST_OP_ID
+    set $serial = (rb_id_serial_t)($id >> RUBY_ID_SCOPE_SHIFT)
+  else
+    set $serial = (rb_id_serial_t)$id
+  end
+  if $serial && $serial <= ruby_global_symbols.last_id
+    set $idx = $serial / ID_ENTRY_UNIT
+    set $ids = (struct RArray *)ruby_global_symbols.ids
+    set $flags = $ids->basic.flags
+    if ($flags & RUBY_FL_USER1)
+      set $idsptr = $ids->as.ary
+      set $idslen = (($flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
+    else
+      set $idsptr = $ids->as.heap.ptr
+      set $idslen = $ids->as.heap.len
+    end
+    if $idx < $idslen
+      set $t = 0
+      set $ary = (struct RArray *)$idsptr[$idx]
+      if $ary != RUBY_Qnil
+        set $flags = $ary->basic.flags
+        if ($flags & RUBY_FL_USER1)
+          set $aryptr = $ary->as.ary
+          set $arylen = (($flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
+        else
+          set $aryptr = $ary->as.heap.ptr
+          set $arylen = $ary->as.heap.len
+        end
+        set $result = $aryptr[($serial % ID_ENTRY_UNIT) * ID_ENTRY_SIZE + $t]
+	if $result != RUBY_Qnil
+          print_string $result
+	else
+	  echo undef
+	end
+      end
+    end
+  end
+end
+
+define print_pathobj
+  set $flags = ((struct RBasic*)($arg0))->flags
+  if ($flags & RUBY_T_MASK) == RUBY_T_STRING
+    print_string $arg0
+  end
+  if ($flags & RUBY_T_MASK) == RUBY_T_ARRAY
+    if $flags & RUBY_FL_USER1
+      set $str = ((struct RArray*)($arg0))->as.ary[0]
+    else
+      set $str = ((struct RArray*)($arg0))->as.heap.ptr[0]
+    end
+    print_string $str
+  end
+end
+
+define rb_ps_thread
+  set $ps_thread = (struct RTypedData*)$arg0
+  set $ps_thread_th = (rb_thread_t*)$ps_thread->data
+  printf "* #<Thread:%p rb_thread_t:%p native_thread:%p>\n", \
+    $ps_thread, $ps_thread_th, $ps_thread_th->thread_id
+  set $cfp = $ps_thread_th->ec->cfp
+  set $cfpend = (rb_control_frame_t *)($ps_thread_th->ec->vm_stack + $ps_thread_th->ec->vm_stack_size)-1
+  while $cfp < $cfpend
+    if $cfp->iseq
+      if !((VALUE)$cfp->iseq & RUBY_IMMEDIATE_MASK) && (((imemo_ifunc << RUBY_FL_USHIFT) | RUBY_T_IMEMO)==$cfp->iseq->flags & ((RUBY_IMEMO_MASK << RUBY_FL_USHIFT) | RUBY_T_MASK))
+        printf "%d:ifunc ", $cfpend-$cfp
+        set print symbol-filename on
+        output/a $cfp->iseq.body
+        set print symbol-filename off
+        printf "\n"
+      else
+      if $cfp->pc
+        set $location = $cfp->iseq->body->location
+        printf "%d:", $cfpend-$cfp
+        print_pathobj $location.pathobj
+        printf ":"
+        print_lineno $cfp
+        printf ":in `"
+        print_string $location.label
+        printf "'\n"
+      else
+        printf "%d: ???.rb:???:in `???'\n", $cfpend-$cfp
+      end
+      end
+    else
+      # if VM_FRAME_TYPE($cfp->flag) == VM_FRAME_MAGIC_CFUNC
+      set $ep = $cfp->ep
+      if ($ep[0] & 0xffff0001) == 0x55550001
+        #define VM_ENV_FLAG_LOCAL 0x02
+        #define VM_ENV_PREV_EP(ep)   GC_GUARDED_PTR_REF(ep[VM_ENV_DATA_INDEX_SPECVAL])
+        set $me = 0
+        set $env_specval = $ep[-1]
+        set $env_me_cref = $ep[-2]
+        while ($env_specval & 0x02) != 0
+          check_method_entry $env_me_cref
+          if $me != 0
+            loop_break
+          end
+          set $ep = $ep[0]
+          set $env_specval = $ep[-1]
+          set $env_me_cref = $ep[-2]
+        end
+        if $me == 0
+          check_method_entry $env_me_cref
+        end
+        printf "%d:", $cfpend-$cfp
+        set print symbol-filename on
+        output/a $me->def->body.cfunc.func
+        set print symbol-filename off
+        set $mid = $me->def->original_id
+        printf ":in `"
+        print_id $mid
+        printf "'\n"
+      else
+        printf "%d:unknown_frame:???:in `???'\n", $cfpend-$cfp
+      end
+    end
+    set $cfp = $cfp + 1
+  end
+end
+
+define rb_count_objects
+  set $objspace = ruby_current_vm_ptr->objspace
+  set $counts_00 = 0
+  set $counts_01 = 0
+  set $counts_02 = 0
+  set $counts_03 = 0
+  set $counts_04 = 0
+  set $counts_05 = 0
+  set $counts_06 = 0
+  set $counts_07 = 0
+  set $counts_08 = 0
+  set $counts_09 = 0
+  set $counts_0a = 0
+  set $counts_0b = 0
+  set $counts_0c = 0
+  set $counts_0d = 0
+  set $counts_0e = 0
+  set $counts_0f = 0
+  set $counts_10 = 0
+  set $counts_11 = 0
+  set $counts_12 = 0
+  set $counts_13 = 0
+  set $counts_14 = 0
+  set $counts_15 = 0
+  set $counts_16 = 0
+  set $counts_17 = 0
+  set $counts_18 = 0
+  set $counts_19 = 0
+  set $counts_1a = 0
+  set $counts_1b = 0
+  set $counts_1c = 0
+  set $counts_1d = 0
+  set $counts_1e = 0
+  set $counts_1f = 0
+  set $total = 0
+  set $i = 0
+  while $i < $objspace->heap_pages.allocated_pages
+    printf "\rcounting... %d/%d", $i, $objspace->heap_pages.allocated_pages
+    set $page = $objspace->heap_pages.sorted[$i]
+    set $p = $page->start
+    set $pend = $p + $page->total_slots
+    while $p < $pend
+      set $flags = $p->as.basic.flags & 0x1f
+      eval "set $counts_%02x = $counts_%02x + 1", $flags, $flags
+      set $p = $p + 1
+    end
+    set $total = $total + $page->total_slots
+    set $i = $i + 1
+  end
+  printf "\rTOTAL: %d, FREE: %d\n", $total, $counts_00
+  printf "T_OBJECT: %d\n", $counts_01
+  printf "T_CLASS: %d\n", $counts_02
+  printf "T_MODULE: %d\n", $counts_03
+  printf "T_FLOAT: %d\n", $counts_04
+  printf "T_STRING: %d\n", $counts_05
+  printf "T_REGEXP: %d\n", $counts_06
+  printf "T_ARRAY: %d\n", $counts_07
+  printf "T_HASH: %d\n", $counts_08
+  printf "T_STRUCT: %d\n", $counts_09
+  printf "T_BIGNUM: %d\n", $counts_0a
+  printf "T_FILE: %d\n", $counts_0b
+  printf "T_DATA: %d\n", $counts_0c
+  printf "T_MATCH: %d\n", $counts_0d
+  printf "T_COMPLEX: %d\n", $counts_0e
+  printf "T_RATIONAL: %d\n", $counts_0f
+  #printf "UNKNOWN_10: %d\n", $counts_10
+  printf "T_NIL: %d\n", $counts_11
+  printf "T_TRUE: %d\n", $counts_12
+  printf "T_FALSE: %d\n", $counts_13
+  printf "T_SYMBOL: %d\n", $counts_14
+  printf "T_FIXNUM: %d\n", $counts_15
+  printf "T_UNDEF: %d\n", $counts_16
+  #printf "UNKNOWN_17: %d\n", $counts_17
+  #printf "UNKNOWN_18: %d\n", $counts_18
+  #printf "UNKNOWN_19: %d\n", $counts_19
+  printf "T_IMEMO: %d\n", $counts_1a
+  printf "T_NODE: %d\n", $counts_1b
+  printf "T_ICLASS: %d\n", $counts_1c
+  printf "T_ZOMBIE: %d\n", $counts_1d
+  #printf "UNKNOWN_1E: %d\n", $counts_1e
+  printf "T_MASK: %d\n", $counts_1f
+end
+document rb_count_objects
+  Counts all objects grouped by type.
+end
+
+# Details: https://bugs.ruby-lang.org/projects/ruby-master/wiki/MachineInstructionsTraceWithGDB
+define trace_machine_instructions
+  set logging on
+  set height 0
+  set width 0
+  display/i $pc
+  while !$exit_code
+    info line *$pc
+    si
+  end
+end
+
+define SDR
+  call rb_vmdebug_stack_dump_raw_current()
+end
+
+define rbi
+  if ((LINK_ELEMENT*)$arg0)->type == ISEQ_ELEMENT_LABEL
+    p *(LABEL*)$arg0
+  else
+  if ((LINK_ELEMENT*)$arg0)->type == ISEQ_ELEMENT_INSN
+    p *(INSN*)$arg0
+  else
+  if ((LINK_ELEMENT*)$arg0)->type == ISEQ_ELEMENT_ADJUST
+    p *(ADJUST*)$arg0
+  else
+    print *$arg0
+  end
+  end
+  end
+end
+
+define dump_node
+  set $str = rb_parser_dump_tree($arg0, 0)
+  set $flags = ((struct RBasic*)($str))->flags
+  printf "%s", (char *)(($flags & RUBY_FL_USER1) ? \
+                        ((struct RString*)$str)->as.heap.ptr : \
+                        ((struct RString*)$str)->as.ary)
+end
+
+define print_flags
+  printf "RUBY_FL_WB_PROTECTED: %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_WB_PROTECTED ? "1" : "0"
+  printf "RUBY_FL_PROMOTED0   : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_PROMOTED0 ? "1" : "0"
+  printf "RUBY_FL_PROMOTED1   : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_PROMOTED1 ? "1" : "0"
+  printf "RUBY_FL_FINALIZE    : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_FINALIZE ? "1" : "0"
+  printf "RUBY_FL_TAINT       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_TAINT ? "1" : "0"
+  printf "RUBY_FL_UNTRUSTED   : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_UNTRUSTED ? "1" : "0"
+  printf "RUBY_FL_EXIVAR      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_EXIVAR ? "1" : "0"
+  printf "RUBY_FL_FREEZE      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_FREEZE ? "1" : "0"
+
+  printf "RUBY_FL_USER0       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER0 ? "1" : "0"
+  printf "RUBY_FL_USER1       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER1 ? "1" : "0"
+  printf "RUBY_FL_USER2       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER2 ? "1" : "0"
+  printf "RUBY_FL_USER3       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER3 ? "1" : "0"
+  printf "RUBY_FL_USER4       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER4 ? "1" : "0"
+  printf "RUBY_FL_USER5       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER5 ? "1" : "0"
+  printf "RUBY_FL_USER6       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER6 ? "1" : "0"
+  printf "RUBY_FL_USER7       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER7 ? "1" : "0"
+  printf "RUBY_FL_USER8       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER8 ? "1" : "0"
+  printf "RUBY_FL_USER9       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER9 ? "1" : "0"
+  printf "RUBY_FL_USER10      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER10 ? "1" : "0"
+  printf "RUBY_FL_USER11      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER11 ? "1" : "0"
+  printf "RUBY_FL_USER12      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER12 ? "1" : "0"
+  printf "RUBY_FL_USER13      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER13 ? "1" : "0"
+  printf "RUBY_FL_USER14      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER14 ? "1" : "0"
+  printf "RUBY_FL_USER15      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER15 ? "1" : "0"
+  printf "RUBY_FL_USER16      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER16 ? "1" : "0"
+  printf "RUBY_FL_USER17      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER17 ? "1" : "0"
+  printf "RUBY_FL_USER18      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER18 ? "1" : "0"
+end
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000000..d0c2d266b4
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,8 @@
+*.gemspec diff=ruby
+*.rb diff=ruby
+bin svn-properties=svn:ignore=ruby
+bin/* diff=ruby
+tool/update-deps diff=ruby
+tool/make-snapshot diff=ruby
+tool/format-release diff=ruby
+tool/leaked-globals diff=ruby
diff --git a/.github/SECURITY.md b/.github/SECURITY.md
new file mode 100644
index 0000000000..56baa29942
--- /dev/null
+++ b/.github/SECURITY.md
@@ -0,0 +1,9 @@
+# Security Policy
+
+## Supported Versions
+
+See <https://www.ruby-lang.org/en/downloads/branches/>.
+
+## Reporting a Vulnerability
+
+See <https://www.ruby-lang.org/en/security/>.
diff --git a/.github/codeql/codeql-config.yml b/.github/codeql/codeql-config.yml
new file mode 100644
index 0000000000..7196708b21
--- /dev/null
+++ b/.github/codeql/codeql-config.yml
@@ -0,0 +1,4 @@
+name: "CodeQL config for the Ruby language"
+
+paths-ignore:
+  - '/ext/**/*/conftest.c'
diff --git a/.github/workflows/baseruby.yml b/.github/workflows/baseruby.yml
new file mode 100644
index 0000000000..16d1e4a85a
--- /dev/null
+++ b/.github/workflows/baseruby.yml
@@ -0,0 +1,47 @@
+name: BASERUBY Check
+
+on: [push, pull_request]
+
+jobs:
+  baseruby:
+    name: BASERUBY
+    runs-on: ubuntu-20.04
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    strategy:
+      matrix:
+        ruby:
+          - ruby-2.2
+#         - ruby-2.3
+#         - ruby-2.4
+#         - ruby-2.5
+#         - ruby-2.6
+          - ruby-2.7
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler: none
+      - run: echo "make=make -sj$((1 + $(nproc --all)))" >> $GITHUB_ENV
+      - run: sudo apt-get install build-essential autoconf bison
+      - run: ./autogen.sh
+      - run: ./configure --disable-install-doc
+      - run: $make update-unicode
+      - run: $make common-srcs
+      - run: $make incs
+      - run: $make all
+      - run: $make test
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ github.workflow }} / BASERUBY @ ${{ matrix.ruby }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
diff --git a/.github/workflows/check_dependencies.yml b/.github/workflows/check_dependencies.yml
new file mode 100644
index 0000000000..b5c5ea3036
--- /dev/null
+++ b/.github/workflows/check_dependencies.yml
@@ -0,0 +1,45 @@
+name: Check Dependencies
+on: [push, pull_request]
+jobs:
+  update-deps:
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, macos-latest]
+      fail-fast: true
+    runs-on: ${{ matrix.os }}
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    steps:
+      - name: Install libraries
+        run: |
+          set -x
+          sudo apt-get update -q || :
+          sudo apt-get install --no-install-recommends -q -y build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev bison autoconf ruby
+        if: "contains(matrix.os, 'ubuntu')"
+      - name: Install libraries
+        run: |
+          brew upgrade
+          brew install gdbm gmp libffi openssl@1.1 zlib autoconf automake libtool readline
+        if: "contains(matrix.os, 'macos')"
+      - name: git config
+        run: |
+          git config --global advice.detachedHead 0
+      - uses: actions/checkout@v2
+      - run: ./autogen.sh
+      - name: Run configure
+        run: ./configure -C --disable-install-doc --disable-rubygems --with-gcc 'optflags=-O0' 'debugflags=-save-temps=obj -g'
+      - run: make all golf
+      - run: ruby tool/update-deps --fix
+      - run: git diff --no-ext-diff --ignore-submodules --exit-code
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ matrix.os }} / Dependencies need to update",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
diff --git a/.github/workflows/check_misc.yml b/.github/workflows/check_misc.yml
new file mode 100644
index 0000000000..2f4bbc7093
--- /dev/null
+++ b/.github/workflows/check_misc.yml
@@ -0,0 +1,17 @@
+name: Miscellaneous checks
+on: [push, pull_request]
+
+jobs:
+  checks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Check if C-sources are US-ASCII
+        run: |
+          ! grep -r -n '[^	 -~]' *.[chy] include internal win32/*.[ch]
+      - name: Check for header macros
+        run: |
+          ! for header in ruby/*.h; do \
+            git grep -l -F -e $header -e HAVE_`echo $header | tr a-z./ A-Z__` -- . > /dev/null || echo $header
+          done | grep -F .
+        working-directory: include
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
new file mode 100644
index 0000000000..9fbabd35c6
--- /dev/null
+++ b/.github/workflows/codeql-analysis.yml
@@ -0,0 +1,43 @@
+name: "Code scanning - action"
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 12 * * 4'
+
+jobs:
+  CodeQL-Build:
+
+    # CodeQL runs on ubuntu-latest and windows-latest
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Install libraries
+      run: |
+        set -x
+        sudo apt-get update -q || :
+        sudo apt-get install --no-install-recommends -q -y build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev bison autoconf ruby
+
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 2
+
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+
+    - name: Remove an obsolete rubygems vendored file
+      run: sudo rm /usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: cpp
+        config-file: ./.github/codeql/codeql-config.yml
+
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1
diff --git a/.github/workflows/compilers.yml b/.github/workflows/compilers.yml
new file mode 100644
index 0000000000..b954c64bd8
--- /dev/null
+++ b/.github/workflows/compilers.yml
@@ -0,0 +1,216 @@
+name: Compilations
+
+on: [push, pull_request]
+
+# Github actions does not support YAML anchors.  This creative use of
+# environment variables (plus the "echo ::set-env" hack) is to reroute that
+# restriction.
+env:
+  default_cc: clang-11
+  append_cc: ''
+  crosshost: ''
+
+  # -O1 is faster than -O3 in our tests... Majority of time are consumed trying
+  # to optimize binaries.  Also Github Actions runs on a relatively modern CPU
+  # compared to, say, GCC 4 or Clang 3.  We don't specify `-march=native`
+  # because compilers tend not understand what the CPU is.
+  optflags: '-O1'
+
+  # -g0 disables backtraces when SEGV.  Do not set that.
+  debugflags: '-ggdb3'
+
+  default_configure: >-
+    --enable-debug-env
+    --disable-install-doc
+    --with-ext=-test-/cxxanyargs,+
+  append_configure: >-
+    --without-valgrind
+    --without-jemalloc
+    --without-gmp
+
+  UPDATE_UNICODE: >-
+    UNICODE_FILES=.
+    UNICODE_PROPERTY_FILES=.
+    UNICODE_AUXILIARY_FILES=.
+    UNICODE_EMOJI_FILES=.
+  CONFIGURE_TTY: never
+  GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+  RUBY_DEBUG: ci rgengc
+  RUBY_TESTOPTS: >-
+    -q
+    --color=always
+    --tty=no
+
+jobs:
+  compile:
+    strategy:
+      fail-fast: false
+      matrix:
+        entry:
+          - { key: default_cc, name: gcc-10,    value: gcc-10 }
+#         - { key: default_cc, name: gcc-9,     value: gcc-9 }
+#         - { key: default_cc, name: gcc-8,     value: gcc-8 }
+#         - { key: default_cc, name: gcc-7,     value: gcc-7 }
+#         - { key: default_cc, name: gcc-6,     value: gcc-6 }
+#         - { key: default_cc, name: gcc-5,     value: gcc-5 }
+          - { key: default_cc, name: gcc-4.8,   value: gcc-4.8 }
+          - { key: default_cc, name: clang-12,  value: clang-12 }
+#         - { key: default_cc, name: clang-11,  value: clang-11 }
+#         - { key: default_cc, name: clang-10,  value: clang-10 }
+#         - { key: default_cc, name: clang-9,   value: clang-9 }
+#         - { key: default_cc, name: clang-8,   value: clang-8 }
+#         - { key: default_cc, name: clang-7,   value: clang-7 }
+#         - { key: default_cc, name: clang-6.0, value: clang-6.0 }
+#         - { key: default_cc, name: clang-5.0, value: clang-5.0 }
+#         - { key: default_cc, name: clang-4.0, value: clang-4.0 }
+          - { key: default_cc, name: clang-3.9, value: clang-3.9 }
+
+          - { key: crosshost, name: aarch64-linux-gnu,     value: aarch64-linux-gnu }
+#         - { key: crosshost, name: arm-linux-gnueabi,     value: arm-linux-gnueabi }
+#         - { key: crosshost, name: arm-linux-gnueabihf,   value: arm-linux-gnueabihf }
+#         - { key: crosshost, name: i686-w64-mingw32,      value: i686-w64-mingw32 }
+#         - { key: crosshost, name: powerpc-linux-gnu,     value: powerpc-linux-gnu }
+          - { key: crosshost, name: powerpc64le-linux-gnu, value: powerpc64le-linux-gnu }
+          - { key: crosshost, name: s390x-linux-gnu,       value: s390x-linux-gnu }
+          - { key: crosshost, name: x86_64-w64-mingw32,    value: x86_64-w64-mingw32 }
+
+          - { key: append_cc, name: c99,   value: '-std=c99   -Werror=pedantic -pedantic-errors' }
+#         - { key: append_cc, name: c11,   value: '-std=c11   -Werror=pedantic -pedantic-errors' }
+#         - { key: append_cc, name: c17,   value: '-std=c17   -Werror=pedantic -pedantic-errors' }
+          - { key: append_cc, name: c2x,   value: '-std=c2x   -Werror=pedantic -pedantic-errors' }
+          - { key: CXXFLAGS,  name: c++98, value: '-std=c++98 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }
+#         - { key: CXXFLAGS,  name: c++11, value: '-std=c++11 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }
+#         - { key: CXXFLAGS,  name: c++14, value: '-std=c++14 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }
+#         - { key: CXXFLAGS,  name: c++17, value: '-std=c++17 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }
+          - { key: CXXFLAGS,  name: c++2a, value: '-std=c++2a -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }
+
+          - { key: optflags, name: '-O0', value: '-O0 -march=x86-64 -mtune=generic' }
+#         - { key: optflags, name: '-O3', value: '-O3 -march=x86-64 -mtune=generic' }
+
+          - { key: append_configure, name: gmp,                  value: '--with-gmp' }
+          - { key: append_configure, name: jemalloc,             value: '--with-jemalloc' }
+          - { key: append_configure, name: valgrind,             value: '--with-valgrind' }
+          - { key: append_configure, name: 'coroutine=ucontext', value: '--with-coroutine=ucontext' }
+          - { key: append_configure, name: 'coroutine=copy',     value: '--with-coroutine=copy' }
+          - { key: append_configure, name: disable-jit-support,  value: '--disable-jit-support' }
+          - { key: append_configure, name: disable-dln,          value: '--disable-dln' }
+          - { key: append_configure, name: disable-rubygems,     value: '--disable-rubygems' }
+
+          - { key: cppflags, name: OPT_THREADED_CODE=1,            value: '-DOPT_THREADED_CODE=1' }
+          - { key: cppflags, name: OPT_THREADED_CODE=2,            value: '-DOPT_THREADED_CODE=2' }
+          - { key: cppflags, name: OPT_THREADED_CODE=3,            value: '-DOPT_THREADED_CODE=3' }
+
+          - { key: cppflags, name: NDEBUG,                         value: '-DNDEBUG' }
+          - { key: cppflags, name: RUBY_DEBUG,                     value: '-DRUBY_DEBUG' }
+#         - { key: cppflags, name: ARRAY_DEBUG,                    value: '-DARRAY_DEBUG' }
+#         - { key: cppflags, name: BIGNUM_DEBUG,                   value: '-DBIGNUM_DEBUG' }
+#         - { key: cppflags, name: CCAN_LIST_DEBUG,                value: '-DCCAN_LIST_DEBUG' }
+#         - { key: cppflags, name: CPDEBUG=-1,                     value: '-DCPDEBUG=-1' }
+#         - { key: cppflags, name: ENC_DEBUG,                      value: '-DENC_DEBUG' }
+#         - { key: cppflags, name: GC_DEBUG,                       value: '-DGC_DEBUG' }
+#         - { key: cppflags, name: HASH_DEBUG,                     value: '-DHASH_DEBUG' }
+#         - { key: cppflags, name: ID_TABLE_DEBUG,                 value: '-DID_TABLE_DEBUG' }
+#         - { key: cppflags, name: RGENGC_DEBUG=-1,                value: '-DRGENGC_DEBUG=-1' }
+#         - { key: cppflags, name: SYMBOL_DEBUG,                   value: '-DSYMBOL_DEBUG' }
+#         - { key: cppflags, name: THREAD_DEBUG=-1,                value: '-DTHREAD_DEBUG=-1' }
+
+#         - { key: cppflags, name: RGENGC_CHECK_MODE,              value: '-DRGENGC_CHECK_MODE' }
+#         - { key: cppflags, name: TRANSIENT_HEAP_CHECK_MODE,      value: '-DTRANSIENT_HEAP_CHECK_MODE' }
+#         - { key: cppflags, name: VM_CHECK_MODE,                  value: '-DVM_CHECK_MODE' }
+
+          - { key: cppflags, name: USE_EMBED_CI=0,                 value: '-DUSE_EMBED_CI=0' }
+          - { key: cppflags, name: USE_FLONUM=0,                   value: '-DUSE_FLONUM=0' }
+#         - { key: cppflags, name: USE_GC_MALLOC_OBJ_INFO_DETAILS, value: '-DUSE_GC_MALLOC_OBJ_INFO_DETAILS' }
+          - { key: cppflags, name: USE_LAZY_LOAD,                  value: '-DUSE_LAZY_LOAD' }
+#         - { key: cppflags, name: USE_RINCGC=0,                   value: '-DUSE_RINCGC=0' }
+#         - { key: cppflags, name: USE_SYMBOL_GC=0,                value: '-DUSE_SYMBOL_GC=0' }
+#         - { key: cppflags, name: USE_THREAD_CACHE=0,             value: '-DUSE_THREAD_CACHE=0' }
+#         - { key: cppflags, name: USE_TRANSIENT_HEAP=0,           value: '-DUSE_TRANSIENT_HEAP=0' }
+#         - { key: cppflags, name: USE_RUBY_DEBUG_LOG=1,           value: '-DUSE_RUBY_DEBUG_LOG=1' }
+
+          - { key: cppflags, name: DEBUG_FIND_TIME_NUMGUESS,       value: '-DDEBUG_FIND_TIME_NUMGUESS' }
+          - { key: cppflags, name: DEBUG_INTEGER_PACK,             value: '-DDEBUG_INTEGER_PACK' }
+          - { key: cppflags, name: ENABLE_PATH_CHECK,              value: '-DENABLE_PATH_CHECK' }
+
+          - { key: cppflags, name: GC_DEBUG_STRESS_TO_CLASS,       value: '-DGC_DEBUG_STRESS_TO_CLASS' }
+#         - { key: cppflags, name: GC_ENABLE_LAZY_SWEEP=0,         value: '-DGC_ENABLE_LAZY_SWEEP=0' }
+#         - { key: cppflags, name: GC_PROFILE_DETAIL_MEMOTY,       value: '-DGC_PROFILE_DETAIL_MEMOTY' }
+#         - { key: cppflags, name: GC_PROFILE_MORE_DETAIL,         value: '-DGC_PROFILE_MORE_DETAIL' }
+
+#         - { key: cppflags, name: CALC_EXACT_MALLOC_SIZE,         value: '-DCALC_EXACT_MALLOC_SIZE' }
+#         - { key: cppflags, name: MALLOC_ALLOCATED_SIZE_CHECK,    value: '-DMALLOC_ALLOCATED_SIZE_CHECK' }
+
+#         - { key: cppflags, name: IBF_ISEQ_ENABLE_LOCAL_BUFFER,   value: '-DIBF_ISEQ_ENABLE_LOCAL_BUFFER' }
+
+#         - { key: cppflags, name: RGENGC_ESTIMATE_OLDMALLOC,      value: '-DRGENGC_ESTIMATE_OLDMALLOC' }
+#         - { key: cppflags, name: RGENGC_FORCE_MAJOR_GC,          value: '-DRGENGC_FORCE_MAJOR_GC' }
+#         - { key: cppflags, name: RGENGC_OBJ_INFO,                value: '-DRGENGC_OBJ_INFO' }
+#         - { key: cppflags, name: RGENGC_OLD_NEWOBJ_CHECK,        value: '-DRGENGC_OLD_NEWOBJ_CHECK' }
+#         - { key: cppflags, name: RGENGC_PROFILE,                 value: '-DRGENGC_PROFILE' }
+
+#         - { key: cppflags, name: VM_DEBUG_BP_CHECK,              value: '-DVM_DEBUG_BP_CHECK' }
+#         - { key: cppflags, name: VM_DEBUG_VERIFY_METHOD_CACHE,   value: '-DVM_DEBUG_VERIFY_METHOD_CACHE' }
+
+          - { key: cppflags, name: MJIT_FORCE_ENABLE,              value: '-DMJIT_FORCE_ENABLE' }
+
+    name: ${{ matrix.entry.name }}
+    runs-on: ubuntu-latest
+    container: ghcr.io/ruby/ruby-ci-image:latest
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    steps:
+      - run: mkdir build
+        working-directory:
+      - name: setenv
+        run: |
+          echo "${{ matrix.entry.key }}=${{ matrix.entry.value }}" >> $GITHUB_ENV
+          echo "make=make -sj$((1 + $(nproc --all)))" >> $GITHUB_ENV
+      - uses: actions/checkout@v2
+        with:
+          path: src
+      - run: ./autogen.sh
+        working-directory: src
+      - name: Run configure
+        run: |
+          if [ -n "${crosshost}" ]; then
+            ../src/configure -C \
+              ${default_configure} \
+              ${append_configure} \
+              --host="${crosshost}"
+          else
+            ../src/configure -C \
+              ${default_configure} \
+              ${append_configure} \
+              --with-gcc="${default_cc} ${append_cc}"
+          fi
+      - run: $make extract-extlibs
+      - run: $make incs
+      - run: $make
+      - run: $make test
+      - run: $make install
+        if: "matrix.entry.name == '-O3'"
+      - run: /usr/local/bin/gem install --no-doc timezone tzinfo
+        if: "matrix.entry.name == '-O3'"
+      - run: $make test-tool
+        if: "matrix.entry.name == '-O3'"
+      - run: $make test-all TESTS='-- ruby -ext-'
+        if: "matrix.entry.name == '-O3'"
+      - run: $make test-spec
+        if: "matrix.entry.name == '-O3'"
+
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ github.workflow }} / ${{ matrix.entry.name }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
new file mode 100644
index 0000000000..f9c0a17302
--- /dev/null
+++ b/.github/workflows/macos.yml
@@ -0,0 +1,66 @@
+name: macOS
+on: [push, pull_request]
+jobs:
+  make:
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        test_task: [ "check", "test-bundler-parallel" ] #, "test-bundled-gems" ] matrix tests has unknown issues
+      fail-fast: false
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    steps:
+      - run: mkdir build
+        working-directory:
+      - name: Disable Firewall
+        run: |
+          sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate off
+          sudo /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate
+      - name: git config
+        run: |
+          git config --global advice.detachedHead 0
+      - uses: actions/checkout@v2
+        with:
+          path: src
+      - name: Install libraries
+        run: |
+          export WAITS='5 60'
+          tool/travis_retry.sh brew upgrade
+          tool/travis_retry.sh brew install gdbm gmp libffi openssl@1.1 zlib autoconf automake libtool readline
+        working-directory: src
+      - name: Set ENV
+        run: |
+          echo "JOBS=-j$((1 + $(sysctl -n hw.activecpu)))" >> $GITHUB_ENV
+      - run: ./autogen.sh
+        working-directory: src
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline)
+      - run: make $JOBS incs
+      - run: make $JOBS
+      - run: make leaked-globals
+        if: matrix.test_task == 'check'
+      - run: make prepare-gems
+        if: matrix.test_task == 'check'
+      - run: make $JOBS -s ${{ matrix.test_task }}
+        timeout-minutes: 60
+        env:
+          RUBY_TESTOPTS: "-q --tty=no"
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: "rexml"
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ github.workflow }} / ${{ matrix.test_task }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/mingw.yml b/.github/workflows/mingw.yml
new file mode 100644
index 0000000000..a5d64c7b2d
--- /dev/null
+++ b/.github/workflows/mingw.yml
@@ -0,0 +1,141 @@
+name: MinGW
+on: [push, pull_request]
+
+# Notes:
+# Actions console encoding causes issues, see test-all & test-spec steps
+#
+jobs:
+  make:
+    runs-on: windows-2022
+    name: ${{ github.workflow }} (${{ matrix.msystem }})
+    env:
+      MSYSTEM: MINGW64
+      MSYSTEM_PREFIX: /mingw64
+      MSYS2_ARCH: x86_64
+      CHOST: "x86_64-w64-mingw32"
+      CFLAGS:   "-march=x86-64 -mtune=generic -O3 -pipe -fstack-protector-strong"
+      CXXFLAGS: "-march=x86-64 -mtune=generic -O3 -pipe"
+      CPPFLAGS: "-D_FORTIFY_SOURCE=2 -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048"
+      LDFLAGS:  "-pipe -fstack-protector-strong"
+      UPDATE_UNICODE: "UNICODE_FILES=. UNICODE_PROPERTY_FILES=. UNICODE_AUXILIARY_FILES=. UNICODE_EMOJI_FILES=."
+      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+    strategy:
+      matrix:
+        test_task: [ "check" ] # to make job names consistent
+      fail-fast: false
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    steps:
+      - run: mkdir build
+        working-directory:
+      - name: git config
+        run: |
+          git config --system core.autocrlf false
+          git config --system core.eol lf
+          git config --system advice.detachedHead 0
+      - uses: actions/checkout@v2
+        with:
+          path: src
+      - name: Set up Ruby & MSYS2
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 2.6
+          mingw: _upgrade_ gdbm gmp libffi libyaml openssl ragel readline
+          msys2: automake1.16 bison
+      - name: where check
+        run: |
+          # show where
+          Write-Host
+          $where = 'gcc.exe', 'ragel.exe', 'make.exe', 'bison.exe', 'libcrypto-1_1-x64.dll', 'libssl-1_1-x64.dll'
+          foreach ($e in $where) {
+            $rslt = where.exe $e 2>&1 | Out-String
+            if ($rslt.contains($e)) { Write-Host $rslt }
+            else { Write-Host "`nCan't find $e" }
+          }
+
+      - name: autogen
+        run: |
+          ./autogen.sh
+        working-directory: src
+        shell: sh
+
+      - name: configure
+        run: |
+          # Actions uses UTF8, causes test failures, similar to normal OS setup
+          $PSDefaultParameterValues['*:Encoding'] = 'utf8'
+          [Console]::OutputEncoding = [System.Text.Encoding]::GetEncoding("IBM437")
+          [Console]::InputEncoding  = [System.Text.Encoding]::GetEncoding("IBM437")
+          $config_args = "--build=$env:CHOST --host=$env:CHOST --target=$env:CHOST"
+          Write-Host $config_args
+          sh -c "../src/configure --disable-install-doc --prefix=/. $config_args"
+          # Write-Host "-------------------------------------- config.log"
+          # Get-Content ./config.log | foreach {Write-Output $_}
+
+      - name: update
+        run: |
+          $jobs = [int](2 * $env:NUMBER_OF_PROCESSORS)
+          make -j $jobs incs
+
+      - name: download gems
+        run: |
+          $jobs = [int](2 * $env:NUMBER_OF_PROCESSORS)
+          make -j $jobs update-gems
+
+      - name: make all
+        timeout-minutes: 40
+        run: |
+          $jobs = [int](2 * $env:NUMBER_OF_PROCESSORS)
+          make -j $jobs
+
+      - name: make install
+        run: |
+          # Actions uses UTF8, causes test failures, similar to normal OS setup
+          $PSDefaultParameterValues['*:Encoding'] = 'utf8'
+          [Console]::OutputEncoding = [System.Text.Encoding]::GetEncoding("IBM437")
+          [Console]::InputEncoding  = [System.Text.Encoding]::GetEncoding("IBM437")
+          make DESTDIR=../install install-nodoc
+
+      - name: test
+        timeout-minutes: 5
+        run: |
+          make test
+
+      - name: test-all
+        timeout-minutes: 60
+        run: |
+          # Actions uses UTF8, causes test failures, similar to normal OS setup
+          $PSDefaultParameterValues['*:Encoding'] = 'utf8'
+          [Console]::OutputEncoding = [System.Text.Encoding]::GetEncoding("IBM437")
+          [Console]::InputEncoding  = [System.Text.Encoding]::GetEncoding("IBM437")
+          $jobs = [int](1.5 * $env:NUMBER_OF_PROCESSORS)
+          if ($env:BUNDLER_VERSION) { Remove-Item env:\BUNDLER_VERSION }
+          make test-all TESTOPTS="-j $jobs --retry --job-status=normal --show-skip --timeout-scale=1.5"
+
+      - name: test-spec
+        timeout-minutes: 10
+        working-directory: src/spec/ruby
+        run: |
+          $env:Path = "$pwd/../../../install/bin;$env:Path"
+          # Actions uses UTF8, causes test failures, similar to normal OS setup
+          $PSDefaultParameterValues['*:Encoding'] = 'utf8'
+          [Console]::OutputEncoding = [System.Text.Encoding]::GetEncoding("IBM437")
+          [Console]::InputEncoding  = [System.Text.Encoding]::GetEncoding("IBM437")
+          ruby -v
+          ruby ../mspec/bin/mspec -I../../tool/lib -j
+
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ github.workflow }} ${{ matrix.msystem }} / ${{ matrix.test_task }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/mjit.yml b/.github/workflows/mjit.yml
new file mode 100644
index 0000000000..9e3a6d6ab7
--- /dev/null
+++ b/.github/workflows/mjit.yml
@@ -0,0 +1,77 @@
+name: MJIT
+on: [push, pull_request]
+jobs:
+  make:
+    strategy:
+      matrix:
+        test_task: [ "check" ] # to make job names consistent
+        jit_opts: [ "--jit", "--jit-wait" ]
+      fail-fast: false
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    env:
+      TESTOPTS: '-q --tty=no'
+      RUN_OPTS: '--disable-gems ${{ matrix.jit_opts }} --jit-debug=-ggdb3'
+      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+    steps:
+      - run: mkdir build
+        working-directory:
+      - name: Install libraries
+        run: |
+          set -x
+          sudo apt-get update -q || :
+          sudo apt-get install --no-install-recommends -q -y build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev bison autoconf ruby
+      - name: git config
+        run: |
+          git config --global advice.detachedHead 0
+      - uses: actions/checkout@v2
+        with:
+          path: src
+      - name: Fixed world writable dirs
+        run: |
+          chmod -v go-w $HOME $HOME/.config
+          sudo chmod -R go-w /usr/share
+          sudo bash -c 'IFS=:; for d in '"$PATH"'; do chmod -v go-w $d; done' || :
+      - name: Set ENV
+        run: |
+          echo "JOBS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
+      - run: ./autogen.sh
+        working-directory: src
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc cppflags=-DVM_CHECK_MODE
+      - run: make $JOBS incs
+      - run: make $JOBS
+      - run: sudo make $JOBS -s install
+      - run: sudo apt-get install gdb # used by test / test-all failure
+      - name: Run test
+        run: |
+          ulimit -c unlimited
+          make $JOBS -s test RUN_OPTS="$RUN_OPTS"
+        timeout-minutes: 60
+      - name: Run test-all
+        run: |
+          ulimit -c unlimited
+          make $JOBS -s test-all RUN_OPTS="$RUN_OPTS"
+        timeout-minutes: 60
+      - name: Run test-spec
+        run: |
+          ulimit -c unlimited
+          make $JOBS -s test-spec RUN_OPTS="$RUN_OPTS"
+        timeout-minutes: 60
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ github.workflow }} / ${{ matrix.test_task }} ${{ matrix.jit_opts }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/spec_guards.yml b/.github/workflows/spec_guards.yml
new file mode 100644
index 0000000000..bf053cdd05
--- /dev/null
+++ b/.github/workflows/spec_guards.yml
@@ -0,0 +1,41 @@
+name: Rubyspec Version Guards Check
+
+on: [push, pull_request]
+
+jobs:
+  rubyspec:
+    name: Rubyspec
+    runs-on: ubuntu-20.04
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    strategy:
+      matrix:
+        # Specs from ruby/spec should still run on all supported Ruby versions.
+        # This also ensures the needed ruby_version_is guards are there, see spec/README.md.
+        ruby:
+          - ruby-2.5
+#         - ruby-2.6
+          - ruby-2.7
+          - ruby-3.0
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler: none
+      - run: gem install webrick
+      - run: ruby ../mspec/bin/mspec
+        working-directory: spec/ruby
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ github.workflow }} / rubyspec @ ${{ matrix.ruby }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
new file mode 100644
index 0000000000..93187699be
--- /dev/null
+++ b/.github/workflows/ubuntu.yml
@@ -0,0 +1,87 @@
+name: Ubuntu
+on: [push, pull_request]
+jobs:
+  make:
+    strategy:
+      matrix:
+        test_task: [ "check", "test-bundler-parallel", "test-bundled-gems", "test-all TESTS=--repeat-count=2" ]
+        os:
+          - ubuntu-20.04
+#         - ubuntu-18.04
+#         - ubuntu-16.04
+        debug: ["", "-DRUBY_DEBUG"]
+        exclude:
+          - test_task: test-bundler-parallel
+            os: ubuntu-16.04
+          - test_task: test-bundled-gems
+            os: ubuntu-16.04
+          - test_task: "test-all TESTS=--repeat-count=2"
+            os: ubuntu-16.04
+          - os: ubuntu-16.04
+            debug: -DRUBY_DEBUG
+          - test_task: "test-all TESTS=--repeat-count=2"
+            debug: -DRUBY_DEBUG
+      fail-fast: false
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+      RUBY_DEBUG: ci
+    runs-on: ${{ matrix.os }}
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    steps:
+      - run: mkdir build
+        working-directory:
+      - name: Install libraries
+        run: |
+          set -x
+          sudo apt-get update -q || :
+          sudo apt-get install --no-install-recommends -q -y build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev bison autoconf ruby
+      - name: git config
+        run: |
+          git config --global advice.detachedHead 0
+      - uses: actions/checkout@v2
+        with:
+          path: src
+      - name: Fixed world writable dirs
+        run: |
+          chmod -v go-w $HOME $HOME/.config
+          sudo chmod -R go-w /usr/share
+          sudo bash -c 'IFS=:; for d in '"$PATH"'; do chmod -v go-w $d; done' || :
+      - name: Set ENV
+        run: |
+          echo "JOBS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
+      - run: ./autogen.sh
+        working-directory: src
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc cppflags=${{ matrix.debug }}
+      - run: make $JOBS incs
+      - run: make $JOBS
+      - run: make leaked-globals
+        if: matrix.test_task == 'check'
+      - run: make prepare-gems
+        if: matrix.test_task == 'check'
+      - name: Create dummy files in build dir
+        run: |
+          ./miniruby -e '(("a".."z").to_a+("A".."Z").to_a+("0".."9").to_a+%w[foo bar test zzz]).each{|basename|File.write("#{basename}.rb", "raise %(do not load #{basename}.rb)")}'
+        if: matrix.test_task == 'check'
+      - run: make $JOBS -s ${{ matrix.test_task }}
+        timeout-minutes: 30
+        env:
+          RUBY_TESTOPTS: "-q --tty=no"
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ""
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ matrix.os }} / ${{ matrix.test_task }}${{ matrix.debug }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
new file mode 100644
index 0000000000..98e59ae188
--- /dev/null
+++ b/.github/workflows/windows.yml
@@ -0,0 +1,80 @@
+name: Windows
+on: [push, pull_request]
+jobs:
+  make:
+    strategy:
+      matrix:
+        test_task: [test]
+        os: [windows-2019]
+        vs: [2019]
+      fail-fast: false
+    runs-on: ${{ matrix.os }}
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+      VCVARS: C:\Program Files (x86)\Microsoft Visual Studio\${{ matrix.vs }}\Enterprise\VC\Auxiliary\Build\vcvars64.bat
+    if: "!contains(github.event.head_commit.message, '[ci skip]')"
+    steps:
+      - run: md build
+        working-directory:
+      - uses: actions/cache@v2
+        with:
+          path: C:\vcpkg\downloads
+          key: ${{ runner.os }}-vcpkg-download-${{ matrix.os }}-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-vcpkg-download-${{ matrix.os }}-
+            ${{ runner.os }}-vcpkg-download-
+      - name: Install libraries with vcpkg
+        run: |
+          vcpkg --triplet x64-windows install readline zlib
+      - uses: actions/cache@v2
+        with:
+          path: C:\Users\runneradmin\AppData\Local\Temp\chocolatey
+          key: ${{ runner.os }}-chocolatey-${{ matrix.os }}-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-chocolatey-${{ matrix.os }}-
+            ${{ runner.os }}-chocolatey-
+      - name: Install libraries with chocolatey
+        run: |
+          choco install --no-progress openssl
+          choco install --no-progress winflexbison3 --version=2.5.18.20190508
+      - name: git config
+        run: |
+          git config --system advice.detachedHead 0
+      - uses: actions/checkout@v2
+        with:
+          path: src
+      - name: Configure
+        run: |
+          call "%VCVARS%"
+          ../src/win32/configure.bat --disable-install-doc --without-ext=+,dbm,gdbm --enable-bundled-libffi --with-opt-dir=C:/vcpkg/installed/x64-windows --with-openssl-dir="C:/Program Files/OpenSSL-Win64"
+      - name: nmake
+        run: |
+          call "%VCVARS%"
+          set YACC=win_bison
+          echo on
+          nmake incs
+          nmake extract-extlibs
+          nmake
+      - name: nmake test
+        timeout-minutes: 30
+        run: |
+          call "%VCVARS%"
+          nmake ${{ matrix.test_task }}
+      - uses: k0kubun/action-slack@v2.0.0
+        with:
+          payload: |
+            {
+              "ci": "GitHub Actions",
+              "env": "${{ matrix.os }} / ${{ matrix.test_task }}",
+              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "commit": "${{ github.sha }}",
+              "branch": "${{ github.ref }}".split('/').reverse()[0]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: failure() && github.event_name == 'push'
+
+defaults:
+  run:
+    working-directory: build
+    shell: cmd
diff --git a/.gitignore b/.gitignore
index 80ca128593..8d11d7278a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,77 +1,230 @@
+*-*-*.def
+*-*-*.exp
+*-*-*.lib
+*.a
 *.bak
+*.bc
+*.bundle
+*.dSYM
+*.dmyh
 *.dylib
+*.elc
+*.i
 *.inc
+*.log
+*.o
+*.obj
+*.old
 *.orig
+*.pch
+*.pdb
+*.rbinc
 *.rej
+*.s
 *.sav
+*.sl
+*.so
 *.swp
-*_prelude.c
+*.yarb
 *~
-.*-*
 .*.list
 .*.time
 .DS_Store
+.bundle
 .ccmalloc
 .ext
-.git
 .pc
 .ppack
 .svn
-COPYING.LIB
-ChangeLog-1.8.0
-ChangeLog.pre-alpha
-ChangeLog.pre1_1
-Doxyfile
-GNUmakefile
+.time
+.ruby-version
 Makefile
-README.atheos
-README.fat-patch
-README.v6
-TAGS
-archive
-autom4te*.cache
-automake
-beos
-config.cache
-config.h
-config.h.in
-config.log
-config.status
-config.status.lineno
-configure
-enc.mk
-enc/trans/*.c
-encdb.h
-ext/win32ole/.document
-largefile.h
-lex.c
-libruby*.*
-miniprelude.c
-miniruby
-newdate.rb
-newline.c
-newver.rb
-parse.c
-parse.h
-patches
-patches-master
-pitest.rb
-ppack
-prelude.c
-preview
-rbconfig.rb
-rename2.h
-repack
-revision.h
-riscos
-rubicon
-ruby
-ruby-man.rd.gz
-test.rb
-tmp
-transdb.h
-uncommon.mk
-web
+cygruby*.def
+extconf.h
 y.output
 y.tab.c
-yasmdata.rb
+*.gcda
+*.gcno
+*.gcov
+*.vscode
+lcov*.info
+
+# /
+/*-fake.rb
+/*.dll
+/*.exe
+/*.res
+/*.pc
+/*.rc
+/*_prelude.c
+/.downloaded-cache
+/.top-enc.mk
+/build*/
+/COPYING.LIB
+/ChangeLog
+/Doxyfile
+/GNUmakefile
+/README.atheos
+/README.fat-patch
+/README.v6
+/TAGS
+/archive
+/autom4te*.cache
+/automake
+/benchmark/benchmark-driver
+/beos
+/bmlog-*
+/breakpoints.gdb
+/config.cache
+/config.h
+/config.h.in
+/config.status
+/config.status.lineno
+/configure
+/coverage/simplecov
+/coverage/simplecov-html
+/coverage/doclie
+/coverage/.last_run.json
+/coverage/.resultset.json*
+/coverage/assets
+/coverage/index.html
+/doc/capi
+/enc.mk
+/encdb.h
+/exts.mk
+/goruby
+/id.[ch]
+/largefile.h
+/lcov-c-out
+/lcov-rb-out
+/lcov-out
+/lex.c
+/libruby*.*
+/miniprelude.c
+/miniruby
+/newdate.rb
+/newline.c
+/newver.rb
+/parse.c
+/parse.h
+/patches
+/patches-master
+/pitest.rb
+/ppack
+/prelude.c
+/preview
+/probes.dmyh
+/probes.h
+/rbconfig.rb
+/rename2.h
+/repack
+/revision.h
+/revision.tmp
+/riscos
+/rubicon
+/ruby
+/ruby-runner
+/ruby-runner.h
+/ruby-man.rd.gz
+/run.gdb
+/sizes.c
+/static-ruby
+/test.rb
+/test-coverage.dat
+/tmp
+/transdb.h
+/uncommon.mk
+/verconf.h
+/verconf.mk
+/web
+/yasmdata.rb
+
+# /bin/
+
+/bin/*.exe
+/bin/*.dll
+
+# /benchmark/
+/benchmark/bm_require.data
+/benchmark/bmx_*.rb
+/benchmark/fasta.output.*
+/benchmark/wc.input
+
+/enc/*.def
+/enc/*.exp
+/enc/*.lib
+/enc/jis/props.h
+/enc/unicode/data
+
+# /coroutine/
+!/coroutine/**/*.s
+
+# /enc/trans/
+/enc/trans/*.c
+/enc/trans/*.def
+/enc/trans/*.exp
+/enc/trans/*.lib
+
+# /exe/
+/exe/goruby
+/exe/ruby
+
+# /ext/
+/ext/extinit.c
+/ext/configure-ext.mk
+/ext/*/exts.mk
+
+# /ext/-test-/cxxanyargs
+/ext/-test-/cxxanyargs/failure*.failed
+
+# /ext/-test-/win32/dln/
+/ext/-test-/win32/dln/dlntest.dll
+/ext/-test-/win32/dln/dlntest.exp
+/ext/-test-/win32/dln/dlntest.lib
+
+# /ext/etc/
+/ext/etc/constdefs.h
+
+# /ext/fiddle/
+/ext/fiddle/libffi-*
+
+# /ext/rbconfig/
+/ext/rbconfig/sizeof/sizes.c
+/ext/rbconfig/sizeof/limits.c
+
+# /ext/ripper/
+/ext/ripper/eventids1.c
+/ext/ripper/.eventids2-check
+/ext/ripper/eventids2table.c
+/ext/ripper/ripper.*
+/ext/ripper/ids1
+/ext/ripper/ids2
+
+# /ext/socket/
+/ext/socket/constants.h
+/ext/socket/constdefs.h
+/ext/socket/constdefs.c
+
+# /gems
+/gems/*.gem
+/gems/src
+/gems/*-*
+
+# /lib/
+/lib/ruby/[1-9]*.*
+/lib/ruby/vendor_ruby
+
+# /spec/bundler
+/.rspec_status
+
+# /tool/
+/tool/config.guess
+/tool/config.sub
+
+# /win32/
+/win32/*.ico
+
+# MJIT
+/rb_mjit_header.h
+/mjit_config.h
+/include/ruby-*/*/rb_mjit_min_header-*.h
diff --git a/.rspec_parallel b/.rspec_parallel
new file mode 100644
index 0000000000..aaff198a32
--- /dev/null
+++ b/.rspec_parallel
@@ -0,0 +1,2 @@
+--format progress
+--format ParallelTests::RSpec::RuntimeLogger --out tmp/parallel_runtime_rspec.log
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000000..d480307dd6
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,291 @@
+# -*- YAML -*-
+# Copyright (C) 2011 Urabe, Shyouhei.  All rights reserved.
+#
+# This file is  a part of the programming language  Ruby.  Permission is hereby
+# granted,  to either  redistribute  or  modify this  file,  provided that  the
+# conditions  mentioned in  the file  COPYING are  met.  Consult  the  file for
+# details.
+
+# This is  a Travis-CI  build configuration file.   The list  of configurations
+# available is located in
+#
+#     http://about.travis-ci.org/docs/user/build-configuration/
+#
+# and as Ruby itself is a project written in C language,
+#
+#     http://about.travis-ci.org/docs/user/languages/c/
+#
+# is also a good place to look at.
+
+language: c
+
+os: linux
+
+dist: xenial
+
+git:
+  quiet: true
+
+cache:
+  ccache: true
+  directories:
+    - $HOME/config_2nd
+    - $HOME/.downloaded-cache
+
+env:
+  global:
+    # Reset timestamps early
+    - _=$(touch NEWS && find . -type f -exec touch -r NEWS {} +)
+    - CONFIGURE_TTY=no
+    - CCACHE_COMPILERCHECK=none
+    - CCACHE_NOCOMPRESS=1
+    - CCACHE_MAXSIZE=512Mi
+    - NPROC="`nproc`"
+    # JOBS and SETARCH are overridden when necessary; see below.
+    - JOBS=-j$((1+${NPROC}))
+    - SETARCH=
+    - RUBY_PREFIX=/tmp/ruby-prefix
+    - GEMS_FOR_TEST='timezone tzinfo'
+    - UPDATE_UNICODE="UNICODE_FILES=. UNICODE_PROPERTY_FILES=. UNICODE_AUXILIARY_FILES=. UNICODE_EMOJI_FILES=."
+    - BEFORE_INSTALL=true
+    # https://github.com/travis-ci/travis-build/blob/e411371dda21430a60f61b8f3f57943d2fe4d344/lib/travis/build/bash/travis_apt_get_options.bash#L7
+    - travis_apt_get_options='--allow-downgrades --allow-remove-essential --allow-change-held-packages'
+    - travis_apt_get_options="-yq --no-install-suggests --no-install-recommends $travis_apt_get_options"
+
+.org.ruby-lang.ci.matrix-definitions:
+
+  - &make-test-only
+    script:
+      - $SETARCH make -s test TESTOPTS="${TESTOPTS=$JOBS -q --tty=no}"
+
+  - &gcc-8
+    compiler: gcc-8
+    # # Not using addon to control retries
+    # addons:
+    #   apt:
+    #     sources:
+    #       - ubuntu-toolchain-r-test
+    before_install:
+      - bash -cx "${BEFORE_INSTALL}"
+      - tool/travis_retry.sh sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
+      - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        ccache
+        gcc-8
+        g++-8
+        libffi-dev
+        libgdbm-dev
+        libncurses5-dev
+        libncursesw5-dev
+        libreadline6-dev
+        libssl-dev
+        libyaml-dev
+        openssl
+        zlib1g-dev
+
+  - &clang-8
+    compiler: clang-8
+    addons:
+      apt:
+        # Not doing this manually unlike other sources, because it has been stable.
+        sources:
+          - llvm-toolchain-xenial-8
+        config:
+          retries: true
+    before_install:
+      - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        clang-8
+        llvm-8-tools
+        libffi-dev
+        libgdbm-dev
+        libncurses5-dev
+        libncursesw5-dev
+        libreadline6-dev
+        libssl-dev
+        libyaml-dev
+        openssl
+        zlib1g-dev
+
+  # --------
+
+  - &x86_64-linux
+    name: x86_64-linux
+    <<: *gcc-8
+
+  - &arm64-linux
+    name: arm64-linux
+    arch: arm64
+    <<: *gcc-8
+
+  - &s390x-linux
+    name: s390x-linux
+    arch: s390x
+    <<: *gcc-8
+
+  - &i686-linux
+    name: i686-linux
+    compiler: gcc-8
+    env:
+      - GCC_FLAGS=-m32
+      - CXX='g++-8 -m32'
+      - debugflags=-g0
+      - SETARCH='setarch i686 --verbose --3gb'
+    # # Not using addon to control retries
+    # addons:
+    #   apt:
+    #     sources:
+    #       - ubuntu-toolchain-r-test
+    before_install:
+      - tool/travis_retry.sh sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
+      - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        gcc-8-multilib
+        g++-8
+        g++-8-multilib
+        libstdc++-8-dev:i386
+        libffi-dev:i386
+        libffi6:i386
+        libgdbm-dev:i386
+        libgdbm3:i386
+        libncurses5-dev:i386
+        libncurses5:i386
+        libncursesw5-dev:i386
+        libreadline6-dev:i386
+        libreadline6:i386
+        libssl-dev:i386
+        libssl1.0.0:i386
+        linux-libc-dev:i386
+        zlib1g-dev:i386
+        zlib1g:i386
+
+  - &arm32-linux
+    name: arm32-linux
+    arch: arm64
+    # https://packages.ubuntu.com/xenial/crossbuild-essential-armhf
+    compiler: arm-linux-gnueabihf-gcc
+    env:
+      - debugflags=-g0
+      - SETARCH='setarch linux32 --verbose --32bit'
+    before_install:
+      - sudo dpkg --add-architecture armhf
+      - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
+      - >-
+        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
+        ccache
+        crossbuild-essential-armhf
+        libc6:armhf
+        libstdc++-5-dev:armhf
+        libffi-dev:armhf
+        libffi6:armhf
+        libgdbm-dev:armhf
+        libgdbm3:armhf
+        libncurses5-dev:armhf
+        libncurses5:armhf
+        libncursesw5-dev:armhf
+        libreadline6-dev:armhf
+        libreadline6:armhf
+        libssl-dev:armhf
+        libssl1.0.0:armhf
+        linux-libc-dev:armhf
+        zlib1g-dev:armhf
+        zlib1g:armhf
+
+matrix:
+  include:
+    # Build every commit:
+    - <<: *i686-linux
+    # Build every commit (Allowed Failures):
+    - <<: *arm32-linux
+    - <<: *arm64-linux
+    - <<: *s390x-linux
+  allow_failures:
+    - name: arm32-linux
+    - name: arm64-linux
+    - name: s390x-linux
+  fast_finish: true
+
+before_script:
+  - rm -fr .ext autom4te.cache
+  - |-
+    [ -d ~/.downloaded-cache ] ||
+    mkdir ~/.downloaded-cache
+  - ln -s ~/.downloaded-cache
+  - "> config.status"
+  - "> .rbconfig.time"
+  - sed -f tool/prereq.status template/Makefile.in common.mk > Makefile
+  - make touch-unicode-files
+  - make -s $JOBS $UPDATE_UNICODE up
+  - make -s $JOBS srcs
+  - rm -f config.status Makefile rbconfig.rb .rbconfig.time
+  - |-
+    if [ -d ~/config_2nd ]; then
+      cp -pr ~/config_2nd build
+    else
+      mkdir build
+    fi
+  - mkdir config_1st config_2nd
+  - chmod -R a-w .
+  - chmod -R u+w build config_1st config_2nd
+  - cd build
+  - |-
+    case "$CC" in
+    gcc*)   CC="ccache $CC${GCC_FLAGS:+ }$GCC_FLAGS -fno-diagnostics-color";;
+    clang*) CC="ccache $CC${GCC_FLAGS:+ }$GCC_FLAGS -fno-color-diagnostics";;
+    esac
+  - |-
+    [ ! -f config.cache ] ||
+    [ "$CC" = "`sed -n s/^ac_cv_prog_CC=//p config.cache`" ] ||
+    (set -x; exec rm config.cache)
+  - $SETARCH ../configure -C --disable-install-doc --prefix=$RUBY_PREFIX $CONFIG_FLAG
+  - cp -pr config.cache config.status .ext/include ../config_1st
+  - $SETARCH make reconfig
+  - cp -pr config.cache config.status .ext/include ../config_2nd
+  - (cd .. && exec diff -ru config_1st config_2nd)
+  - chmod u+w ..
+  - rm -rf ~/config_2nd
+  - mv ../config_2nd ~
+  - chmod u-w ..
+  - $SETARCH make -s $JOBS
+  - make -s install
+  - |-
+    [ -z "${GEMS_FOR_TEST}" ] ||
+    $RUBY_PREFIX/bin/gem install --no-document $GEMS_FOR_TEST
+  - echo "raise 'do not load ~/.irbrc in test'" > ~/.irbrc
+
+script:
+  - $SETARCH make -s test -o showflags TESTOPTS="${TESTOPTS=$JOBS -q --tty=no}"
+  - travis_wait 50 $SETARCH make -s test-all -o exts TESTOPTS="${TESTOPTS} ${TEST_ALL_OPTS}" RUBYOPT="-w"
+  - $SETARCH make -s test-spec MSPECOPT=-ff # not using `-j` because sometimes `mspec -j` silently dies
+  - $SETARCH make -s -o showflags leaked-globals
+
+# Branch matrix.  Not all branches are Travis-ready so we limit branches here.
+branches:
+  only:
+    - master
+    - ruby_2_4
+    - ruby_2_5
+    - ruby_2_6
+    - ruby_2_7
+
+# We want to be notified when something happens.
+notifications:
+  irc:
+    channels:
+      - "chat.freenode.net#ruby-core"
+    on_success: change # [always|never|change] # default: always
+    on_failure: always # [always|never|change] # default: always
+    template:
+      - "%{message} by @%{author}: See %{build_url}"
+
+  webhooks:
+    urls:
+      - secure: mRsoS/UbqDkKkW5p3AEqM27d4SZnV6Gsylo3bm8T/deltQzTsGzZwrm7OIBXZv0UFZdE68XmPlyHfZFLSP2V9QZ7apXMf9/vw0GtcSe1gchtnjpAPF6lYBn7nMCbVPPx9cS0dwL927fjdRM1vj7IKZ2bk4F0lAJ25R25S6teqdk= # ruby-lang slack: ruby/simpler-alerts-bot (travis)
+    on_success: never
+    on_failure: always
+
+  email:
+    - ko1c-failure@atdot.net
diff --git a/BSDL b/BSDL
new file mode 100644
index 0000000000..66d93598aa
--- /dev/null
+++ b/BSDL
@@ -0,0 +1,22 @@
+Copyright (C) 1993-2013 Yukihiro Matsumoto. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000000..ffdf2dd4b8
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,4 @@
+Please see the [official issue tracker] and wiki [HowToContribute].
+
+[official issue tracker]: https://bugs.ruby-lang.org
+[HowToContribute]: https://bugs.ruby-lang.org/projects/ruby/wiki/HowToContribute
diff --git a/COPYING b/COPYING
index 9043404a83..48e5a96de7 100644
--- a/COPYING
+++ b/COPYING
@@ -1,56 +1,56 @@
 Ruby is copyrighted free software by Yukihiro Matsumoto <matz@netlab.jp>.
-You can redistribute it and/or modify it under either the terms of the GPL
-version 2 (see the file GPL), or the conditions below:
+You can redistribute it and/or modify it under either the terms of the
+2-clause BSDL (see the file BSDL), or the conditions below:
 
-  1. You may make and give away verbatim copies of the source form of the
-     software without restriction, provided that you duplicate all of the
-     original copyright notices and associated disclaimers.
+1. You may make and give away verbatim copies of the source form of the
+   software without restriction, provided that you duplicate all of the
+   original copyright notices and associated disclaimers.
 
-  2. You may modify your copy of the software in any way, provided that
-     you do at least ONE of the following:
+2. You may modify your copy of the software in any way, provided that
+   you do at least ONE of the following:
 
-       a) place your modifications in the Public Domain or otherwise
-          make them Freely Available, such as by posting said
-	  modifications to Usenet or an equivalent medium, or by allowing
-	  the author to include your modifications in the software.
+   a. place your modifications in the Public Domain or otherwise
+      make them Freely Available, such as by posting said
+      modifications to Usenet or an equivalent medium, or by allowing
+      the author to include your modifications in the software.
 
-       b) use the modified software only within your corporation or
-          organization.
+   b. use the modified software only within your corporation or
+      organization.
 
-       c) give non-standard binaries non-standard names, with
-          instructions on where to get the original software distribution.
+   c. give non-standard binaries non-standard names, with
+      instructions on where to get the original software distribution.
 
-       d) make other distribution arrangements with the author.
+   d. make other distribution arrangements with the author.
 
-  3. You may distribute the software in object code or binary form,
-     provided that you do at least ONE of the following:
+3. You may distribute the software in object code or binary form,
+   provided that you do at least ONE of the following:
 
-       a) distribute the binaries and library files of the software,
-	  together with instructions (in the manual page or equivalent)
-	  on where to get the original distribution.
+   a. distribute the binaries and library files of the software,
+      together with instructions (in the manual page or equivalent)
+      on where to get the original distribution.
 
-       b) accompany the distribution with the machine-readable source of
-	  the software.
+   b. accompany the distribution with the machine-readable source of
+      the software.
 
-       c) give non-standard binaries non-standard names, with
-          instructions on where to get the original software distribution.
+   c. give non-standard binaries non-standard names, with
+      instructions on where to get the original software distribution.
 
-       d) make other distribution arrangements with the author.
+   d. make other distribution arrangements with the author.
 
-  4. You may modify and include the part of the software into any other
-     software (possibly commercial).  But some files in the distribution
-     are not written by the author, so that they are not under these terms.
+4. You may modify and include the part of the software into any other
+   software (possibly commercial).  But some files in the distribution
+   are not written by the author, so that they are not under these terms.
 
-     For the list of those files and their copying conditions, see the
-     file LEGAL.
+   For the list of those files and their copying conditions, see the
+   file LEGAL.
 
-  5. The scripts and library files supplied as input to or produced as 
-     output from the software do not automatically fall under the
-     copyright of the software, but belong to whomever generated them, 
-     and may be sold commercially, and may be aggregated with this
-     software.
+5. The scripts and library files supplied as input to or produced as
+   output from the software do not automatically fall under the
+   copyright of the software, but belong to whomever generated them,
+   and may be sold commercially, and may be aggregated with this
+   software.
 
-  6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
-     IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-     PURPOSE.
+6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+   PURPOSE.
diff --git a/COPYING.ja b/COPYING.ja
index aa2a163848..230376bc60 100644
--- a/COPYING.ja
+++ b/COPYING.ja
@@ -1,51 +1,51 @@
-$BK\%W%m%0%i%`$O%U%j!<%=%U%H%&%'%"$G$9!%(BGPL (the GNU General
-Public License)$B%P!<%8%g%s(B2$B$^$?$O0J2<$K<($9>r7o$GK\%W%m%0%i%`(B
-$B$r:FG[I[$G$-$^$9!%(BGPL$B$K$D$$$F$O(BGPL$B%U%!%$%k$r;2>H$7$F2<$5$$!%(B
+本プログラムはフリーソフトウェアです．2-clause BSDL
+または以下に示す条件で本プログラムを再配布できます
+2-clause BSDLについてはBSDLファイルを参照して下さい．
 
-  1. $BJ#@=$O@)8B$J$/<+M3$G$9!%(B
+1. 複製は制限なく自由です．
 
-  2. $B0J2<$N>r7o$N$$$:$l$+$rK~$?$9;~$KK\%W%m%0%i%`$N%=!<%9$r(B
-     $B<+M3$KJQ99$G$-$^$9!%(B
+2. 以下の条件のいずれかを満たす時に本プログラムのソースを
+   自由に変更できます．
 
-     (a) $B%M%C%H%K%e!<%:$K%]%9%H$7$?$j!$:n<T$KJQ99$rAwIU$9$k(B
-         $B$J$I$NJ}K!$G!$JQ99$r8x3+$9$k!%(B
+   a.  ネットニューズにポストしたり，作者に変更を送付する
+       などの方法で，変更を公開する．
 
-     (b) $BJQ99$7$?K\%W%m%0%i%`$r<+J,$N=jB0$9$kAH?%FbIt$@$1$G(B
-         $B;H$&!%(B
+   b.  変更した本プログラムを自分の所属する組織内部だけで
+       使う．
 
-     (c) $BJQ99E@$rL@<($7$?$&$(!$%=%U%H%&%'%"$NL>A0$rJQ99$9$k!%(B
-         $B$=$N%=%U%H%&%'%"$rG[I[$9$k;~$K$OJQ99A0$NK\%W%m%0%i(B
-         $B%`$bF1;~$KG[I[$9$k!%$^$?$OJQ99A0$NK\%W%m%0%i%`$N%=!<(B
-         $B%9$NF~<jK!$rL@<($9$k!%(B
+   c.  変更点を明示したうえ，ソフトウェアの名前を変更する．
+       そのソフトウェアを配布する時には変更前の本プログラ
+       ムも同時に配布する．または変更前の本プログラムのソー
+       スの入手法を明示する．
 
-     (d) $B$=$NB>$NJQ99>r7o$r:n<T$H9g0U$9$k!%(B
+   d.  その他の変更条件を作者と合意する．
 
-  3. $B0J2<$N>r7o$N$$$:$l$+$rK~$?$9;~$KK\%W%m%0%i%`$r%3%s%Q%$(B
-     $B%k$7$?%*%V%8%'%/%H%3!<%I$d<B9T7A<0$G$bG[I[$G$-$^$9!%(B
+3. 以下の条件のいずれかを満たす時に本プログラムをコンパイ
+   ルしたオブジェクトコードや実行形式でも配布できます．
 
-     (a) $B%P%$%J%j$r<u$1<h$C$??M$,%=!<%9$rF~<j$G$-$k$h$&$K!$(B
-         $B%=!<%9$NF~<jK!$rL@<($9$k!%(B
+   a.  バイナリを受け取った人がソースを入手できるように，
+       ソースの入手法を明示する．
 
-     (b) $B5!3#2DFI$J%=!<%9%3!<%I$rE:IU$9$k!%(B
+   b.  機械可読なソースコードを添付する．
 
-     (c) $BJQ99$r9T$C$?%P%$%J%j$OL>A0$rJQ99$7$?$&$(!$%*%j%8%J(B
-         $B%k$N%=!<%9%3!<%I$NF~<jK!$rL@<($9$k!%(B
+   c.  変更を行ったバイナリは名前を変更したうえ，オリジナ
+       ルのソースコードの入手法を明示する．
 
-     (d) $B$=$NB>$NG[I[>r7o$r:n<T$H9g0U$9$k!%(B
+   d.  その他の配布条件を作者と合意する．
 
-  4. $BB>$N%W%m%0%i%`$X$N0zMQ$O$$$+$J$kL\E*$G$"$l<+M3$G$9!%$?(B
-     $B$@$7!$K\%W%m%0%i%`$K4^$^$l$kB>$N:n<T$K$h$k%3!<%I$O!$$=(B
-     $B$l$>$l$N:n<T$N0U8~$K$h$k@)8B$,2C$($i$l$k>l9g$,$"$j$^$9!%(B
+4. 他のプログラムへの引用はいかなる目的であれ自由です．た
+   だし，本プログラムに含まれる他の作者によるコードは，そ
+   れぞれの作者の意向による制限が加えられる場合があります．
 
-     $B$=$l$i%U%!%$%k$N0lMw$H$=$l$>$l$NG[I[>r7o$J$I$KIU$$$F$O(B
-     LEGAL$B%U%!%$%k$r;2>H$7$F$/$@$5$$!%(B
+   それらファイルの一覧とそれぞれの配布条件などに付いては
+   LEGALファイルを参照してください．
 
-  5. $BK\%W%m%0%i%`$X$NF~NO$H$J$k%9%/%j%W%H$*$h$S!$K\%W%m%0%i(B
-     $B%`$+$i$N=PNO$N8"Mx$OK\%W%m%0%i%`$N:n<T$G$O$J$/!$$=$l$>(B
-     $B$l$NF~=PNO$r@8@.$7$??M$KB0$7$^$9!%$^$?!$K\%W%m%0%i%`$K(B
-     $BAH$_9~$^$l$k$?$a$N3HD%%i%$%V%i%j$K$D$$$F$bF1MM$G$9!%(B
+5. 本プログラムへの入力となるスクリプトおよび，本プログラ
+   ムからの出力の権利は本プログラムの作者ではなく，それぞ
+   れの入出力を生成した人に属します．また，本プログラムに
+   組み込まれるための拡張ライブラリについても同様です．
 
-  6. $BK\%W%m%0%i%`$OL5J]>Z$G$9!%:n<T$OK\%W%m%0%i%`$r%5%]!<%H(B
-     $B$9$k0U;V$O$"$j$^$9$,!$%W%m%0%i%`<+?H$N%P%0$"$k$$$OK\%W(B
-     $B%m%0%i%`$N<B9T$J$I$+$iH/@8$9$k$$$+$J$kB;32$KBP$7$F$b@U(B
-     $BG$$r;}$A$^$;$s!%(B
+6. 本プログラムは無保証です．作者は本プログラムをサポート
+   する意志はありますが，プログラム自身のバグあるいは本プ
+   ログラムの実行などから発生するいかなる損害に対しても責
+   任を持ちません．
diff --git a/ChangeLog b/ChangeLog
deleted file mode 100644
index 0df7e34b85..0000000000
--- a/ChangeLog
+++ /dev/null
@@ -1,60902 +0,0 @@
-Tue May 12 13:43:35 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* win32/Makefile.sub: fixes a mistake in merging r22822.
-
-Sun Mar  8 23:02:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (LDFLAGS): always prepends -link.
-
-Mon May 11 23:14:06 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/dl.c (rb_dlhandle_initialize): prohibits DL::dlopen
-	  with a tainted name of library.
-	  Patch by sheepman <sheepman AT sheepman.sakura.ne.jp>.
-
-	* ext/dl/dl.c (rb_dlhandle_sym): ditto
-
-Mon May 11 22:33:46 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/lib/dl/func.rb (DL::Function#call): prevents
-	  passing tainted arguments to a C function.
-	  Patch by sheepman <sheepman AT sheepman.sakura.ne.jp>.
-
-	* ext/dl/lib/dl/func.rb (DL::Function#check_safe_obj): 
-	  new method for checking #call's arguments.
-
-Tue Mar 10 04:53:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MINIRUBY): keep macro into Makefile.
-
-	* configure.in (RUBY_CHECK_SIZEOF): fix for fallback.
-
-Thu Feb 19 15:47:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/fake.rb.in: extracted from Makefile.in.
-
-	* configure.in (fake.rb): prefixed with $(arch)-.
-
-Sun Apr 26 20:21:39 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* .gitignore: added.
-
-Fri May  1 13:18:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (_longjmp): never return.  see [ruby-core:23241]
-
-Sun Apr 26 20:33:12 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tb (ActionMap#generate_node):
-	  Use ActionMap#gennode instead of generate_node
-	  because of initialization.
-
-Sun Apr 26 18:35:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_reopen): keeps pathv for prep_stdio.  [ruby-dev:38131]
-
-Sun Apr 26 15:13:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#parse_in_order): do not make an
-	  option from non-option argument.  [ruby-dev:38333]
-
-Sat Apr 25 19:11:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_cv_func_daemon): use daemon(3) only on *BSD.
-
-	* process.c (proc_daemon): double fork to ensure not having ctty.
-	  [ruby-core:23305]
-
-Sun Apr 19 14:43:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): the order of local variables on stack is
-	  undefined.  should use outermost VALUE for ruby_init_stack.
-
-Mon Apr 13 11:35:55 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): optimize previous commit.
-	  [ruby-list:45954]
-
-Mon Apr 13 10:58:54 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): check encoding compatibility only on
-	  real parts.
-
-Sun Apr 19 13:17:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb (Gem::QuickLoader#push_gem_version_on_load_path):
-	  check for requirement if the gem is installed.  a patch from
-	  Kyosuke MOROHASHI at [ruby-dev:38020].
-
-Wed Apr 15 20:24:49 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_flatten): flatten(0) works as Array#dup.
-	  [ruby-core:23168]
-
-	* test/ruby/test_array.rb: add a test for above.
-
-Fri Apr 17 00:45:09 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* dir.c (bracket): fix escape handling for range character in bracket
-	  of fnmatch pattern.  e.g., '[a\-c]' should not match 'b'.
-
-Wed Apr 15 11:53:35 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (fnmatch_helper): use rb_enc_precise_mbclen and
-	  fail if bytes are invalid. [ruby-dev:38307]
-
-Tue Apr 14 18:11:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (bracket): if same in bytes, path is matching.
-	  [ruby-dev:38305]
-
-Sun Apr 12 19:54:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (bracket, fnmatch_helper): compare bytewise first, to get
-	  rid of invalid byte sequence.  [ruby-dev:38303]
-
-Wed Apr  8 21:58:12 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_dump): buffer length plus one byte for null
-	  terminator.  [ruby-dev:38294]
-
-	* test/ruby/test_m17n.rb (test_str_dump): add a test for above.
-
-Wed Apr  8 20:08:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): should not sign-expand non-ascii.
-	  [ruby-core:23158]
-
-Wed Apr  8 17:29:29 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_chop_bang): reset coderange. [ruby-core:23155]
-
-Tue Apr  7 13:14:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBY_DLDFLAGS): compatibility version is
-	  ruby_version.
-
-Sat Apr  4 17:05:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (RB_NUM_COERCE_FUNCS_NEED_OPID): macro to
-	  check compatibility.  [ruby-dev:38162]
-
-Fri Apr  3 14:02:42 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/irb/completion.rb (IRB::InputCompletor::Operators): Add
-	  overloadable negative operators.
-
-	* lib/irb/ruby-lex.rb (RubyLex#lex_init): Support overloadable
-	  negative operators.
-
-	* lib/irb/ruby-lex.rb (RubyLex#identify_identifier): Minus signs
-	  need to be escaped in regexp character class.
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords, ruby-parse-partial):
-	  Support overloadable negative operators.
-
-Wed Apr  1 20:37:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (rb_cv_fork_with_pthread): fail if the child process
-	  fail.
-
-Mon Mar 30 19:04:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* .gdbinit (rp): show negative fixnum correctly.
-
-Mon Mar 30 12:12:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (eval_string_with_cref): replaces the message if
-	  frozen.  [ruby-dev:38208]
-
-Sun Mar 29 08:59:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pathname.rb (Pathname#relative_path_from): compares path
-	  components according to system default case-sensitiveness.
-	  [ruby-core:22829]
-
-Sat Mar 28 11:10:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ruby.imp): all symbols in static library need to be
-	  exported, so that encoding-extensions can be loaded.  based on a
-	  patch from Yutaka Kanemoto <kinpoco AT gmail.com> a
-	  [ruby-talk:332282].
-
-Fri Mar 27 01:33:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_cmp): negate the result of reverse comparison.
-
-Fri Mar 27 01:19:50 2009  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (rb_cmpint): FIX2INT may fail on LP64 platforms.
-
-Fri Mar 13 21:11:51 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/sdbm/_sdbm.c: should include "ruby/defines.h" as well for
-	  prototypes of compatibility functions on Win32 platform.
-	  [ruby-core:22870]
-
-Thu Mar 26 11:33:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths): considers
-	  --program-prefix and --program-suffix.  reapplied r19923.
-
-Mon Mar 23 21:41:14 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/dbm/dbm.c (fdbm_initialize): Make the file variable
-	  volatile, because FilePathValue() currently does not protect the
-	  given variable from GC. (Probably it should)
-
-	* ext/sdbm/init.c (fsdbm_initialize): Ditto.
-
-Mon Mar 23 06:51:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (link_so): replaces $(TARGET) with basename of the
-	  target.  [ruby-talk:330286]
-
-Wed Mar 18 02:41:33 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (open_server_inaddr_any): fixed multiple network
-	  families problem. a patch from Charl Matthee at [ruby-core:21033].
-
-Tue Mar 17 21:42:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): creates .revision.time and passes
-	  CHDIR to create prerequisite files.
-
-Tue Mar 17 18:00:55 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (Enumerator#{each_,}{with_index,with_object}): Fix
-	  a bug where any parameter but the first one is dropped even if
-	  multiple values are yielded with. [Bug #1198]
-
-Tue Mar 17 14:25:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#sub): set $~ in block.binding.
-	  [ruby-dev:38173]
-
-Sun Mar 15 02:09:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (bmcall): should not uninitialized variable.  a patch from
-	  pegacorn at [ruby-dev:38169].
-
-Sat Mar 14 18:18:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_proc_call, rb_node_arity, bmcall, curry): checks
-	  overflow.
-
-	* proc.c (rb_proc_parameters): unnamed_parameters() expects in
-	  not VALUE.
-
-Fri Mar 13 09:17:12 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils#fu_get_gid): stringify group
-	  argument before making regexp match.  [ruby-dev:38155]
-
-Fri Mar 13 15:10:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_set_value): should use
-	  OPENSSL_free instead of free.  a patch from Charlie Savage a
-	  [ruby-core:22858].
-
-Fri Mar 13 08:06:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (rv_strdup): macro to duplicate nul-terminated string.
-	  [ruby-core:22852]
-
-Thu Mar 12 22:14:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_def_const): use INT2NUM because
-	  OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG doesn't fit into Fixnum.
-
-Thu Mar 12 05:22:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (copy_stream_fallback_body): off_t may be larger than long.
-
-	* iseq.c (rb_iseq_disasm): RSTRING_LEN() returns long.
-
-	* process.c (rb_f_sleep): time() needs time_t.
-
-Thu Mar 12 05:12:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (ruby_init_stack): range of rlim_cur may be
-	  larger than int.
-
-	* missing/vsnprintf.c (BSD_vfprintf): commented out code which has
-	  no effect at all.
-
-Wed Mar 11 20:13:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_sym): RTLD_NEXT is not for symbol
-	  name.   [ruby-dev:38150]
-
-Wed Mar 11 13:03:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_sym): fixed heap corruption.
-	  [ruby-core:22822]
-
-Tue Mar 10 13:45:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (LDFLAGS): moved -link to TRY_LINK, LINK_SO
-	  and so on.  based on a patch by Charlie Savage at
-	  [ruby-core:22794]
-
-	* win32/Makefile.sub (config.h): passes LDFLAGS to rbconfig.rb so
-	  that extconf.rb could refer it.  [ruby-core:22725]
-
-Wed Mar  4 05:19:27 2009  James Edward Gray II  <jeg2@ruby-lang.org>
-
-  * lib/csv.rb: Some minor documentation fixes from Gregory Brown.
-
-Wed Mar  4 00:54:43 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/prime.rb (Prime::prime?): used to return a wrong answer.
-	  [ruby-core:22646].
-
-	* test/test_prime.rb (test_prime?): test case for [ruby-core:22646].
-
-Thu Mar  5 11:27:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (miniruby.exe): workaround for a failure of
-	  mt.exe on Windows 7 beta.  [ruby-talk:330284]
-
-Wed Mar  4 21:21:51 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/thread.rb (SizedQueue#push): fix limit condition.
-	  [ruby-dev:38135]
-
-Wed Mar  4 03:42:56 2009  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: A patch from Madoka Yakamamoto to prevent an infinite
-	  loop while reading some encodings.
-
-Mon Mar  2 21:01:36 2009  Tanaka Akira  <akr@fsij.org>
-
-	* file.c: include fcntl.h for O_RDONLY on Solaris.
-
-Mon Mar  2 19:43:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/uri/common.rb (URI::Parser#escape): escaped string is ascii
-	  only.
-
-	* lib/uri/common.rb (URI::Parser#unescape): converts bytewise.
-	  [ruby-dev:38005], [ruby-dev:38110]
-
-Mon Mar  2 10:50:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_sym): get rid of buffer overrun,
-	  and try ASCII WINAPI versions too.
-
-Mon Mar  2 00:56:45 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/observer.rb: The module oberservable uses now a hash to
-	  store listeners. merged a patch from Alessandro Di Maria in
-	  [ruby-core:22560].
-
-Sun Mar  1 19:52:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/win32/lib/Win32API.rb (initialize): passes res
-	  arguments to DL.
-
-Sun Mar  1 19:36:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_dtoa): allocates one more byte to get rid of buffer
-	  overrun.  a patch from Charlie Savage at [ruby-core:22604].
-
-Sun Mar  1 19:10:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (.y.c): removed extra backslash.  [ruby-core:22602]
-
-Sun Mar  1 19:02:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): fix for stdcall and missing
-	  argument numbers.  [ruby-core:22601]
-
-	* ext/dl/dl.h (DLSTACK_PROTO0_): added.
-
-	* ext/dl/mkcallback.rb (gencallback, gen_callback_file),
-	  (rb_dl_init_callbacks): omit stdcall functions unless supported.
-
-	* lib/rubygems/config_file.rb (SHGetFolderPath): stdcall.
-
-Sun Mar  1 17:27:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (gfDebug): uncommented out.
-	  [ruby-core:22600]
-
-Sun Mar  1 16:15:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_waitpid): use wait_each() on no waitpid platforms.
-	  [ruby-dev:38054]
-
-Sun Mar  1 16:01:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_daemon): stops and restarts timer thread because
-	  daemon(3) implies fork(2).  [ruby-dev:38055]
-
-Fri Feb 27 22:02:34 2009  Tanaka Akira  <akr@fsij.org>
-
-	* util.c: fix SEGV by test_time.rb with
-	  gcc version 4.4.0 20090219 (Red Hat 4.4.0-0.21) on Fedora 11 Alpha.
-
-Fri Feb 27 18:30:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (cdhash_type, iseq_set_sequence): should not call
-	  methods of the argument of case, to keep the semantics of
-	  case/when.  [ruby-dev:38079]
-
-Fri Feb 27 18:01:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (ruby_get_stack_grow_direction): no needs to use thread
-	  here, and not initialized yet.  [ruby-core:22439]
-
-Fri Feb 27 17:45:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_load_ok): checks if regular file, except for the
-	  platform disallows to open directories, e.g. dosish.
-	  [ruby-dev:38097], [Bug #1221]
-
-Wed Feb 25 12:27:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_force_encoding): should clear coderange at changing
-	  encoding.  [ruby-core:22437]
-
-Wed Feb 25 12:06:09 2009    <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline_1): enables limit even if rs is given.
-	  [ruby-core:22434]
-
-Wed Feb 25 02:28:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): coderange may change.
-	  [ruby-core:22414]
-
-Wed Feb 25 02:17:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_delete_bang): should recalculate coderange.
-	  [ruby-talk:329267]
-
-Tue Feb 24 19:01:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (main): split from exts and makes main program after
-	  building exts with miniruby, to get rid of overwriting running
-	  program.  [ruby-core:22339]
-
-	* Makefile.in, win32/Makefile.sub (RUNCMD, MKMAIN_CMD): macros to
-	  run script file.
-
-	* ext/extmk.rb (parse_args): added --command-output option which
-	  creates script file to make main program.
-
-Tue Feb 24 17:58:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ripper.c): exec can't work on Windows.
-
-	* ext/ripper/depend (.SUFFIXES): nmake doesn't have .y by default.
-
-	* Makefile.in (id.h): overwrites unconditinally.
-
-Tue Feb 24 13:13:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): ptrdiff_t may be larger than
-	  long.
-
-Tue Feb 24 10:49:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_waitpid): last argument was missing.
-
-	* process.c (waitall_each): fixed typo.  a patch from shinichiro.h
-	  <shinichiro.hamaji AT gmail.com> at [ruby-dev:38054].
-
-Tue Feb 24 01:22:19 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_thread.rb: fix for environment where fork is not
-	  available.
-
-Tue Feb 24 01:19:38 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_cleanup_func): unlock all locked mutexes even when
-	  forking.  [ruby-core:22269]
-
-Mon Feb 23 14:47:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (mv): added description for the case of
-	  different partitions.  [ruby-talk:329072]
-
-Sun Feb 22 22:42:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_trans): should recalculate coderange.
-	  [ruby-core:22326] (reopened at [ruby-core:22328])
-
-Sun Feb 22 14:33:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_trans): should not be affected by the encoding of
-	  replacement unless actually modified.  [ruby-talk:328967]
-
-Fri Feb  6 12:11:24 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (process_options): set initial default_external before -r.
-
-Sun Feb 22 10:43:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (method_missing): should not pop cfp if missing method
-	  is method_missing.  [ruby-core:22298]
-
-	* vm_eval.c (rb_raise_method_missing): new function to directly
-	  raise NoMethodError.
-
-	* vm_insnhelper.c (vm_call_method): fixed the case method_missing
-	  is missing.
-
-Fri Feb 20 23:28:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* util.c (rv_alloc, freedtoa): use our normal xmalloc()/xfree() because
-	  couldn't free the returned pointer from ruby_dtoa().
-
-	* missing/vsnprintf.c (cvt): receive buffer and use/return it instead
-	  of returning the pointer returned from BSD__dtoa().
-
-	* missing/vsnprintf.c (BSD_vfprintf): pass buf to cvt() as the buffer.
-	  [ruby-core:22184]
-
-Thu Feb 19 15:39:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspbres_verify): OCSP_basic_verify
-	  returns positive value on success, not non-zero.  [ruby-core:21762]
-
-Wed Feb 18 12:35:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): fix for spaces before extention.
-	  [ruby-dev:38044]
-
-Wed Feb 18 10:29:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): do not delete main thread from
-	  living_threads.  [ruby-core:19385], [ruby-core:22158]
-
-Tue Feb 17 05:41:08 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: fix to add "ensure" codes across "while" clause
-	  before "return" expression.  [ruby-dev:37967]
-
-	* bootstraptest/test_flow.rb: add a test.
-
-Sun Feb 15 11:45:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_define_hooked_variable): suppress false assertion
-	  with VC9.  [ruby-core:22115]
-
-Fri Feb 13 15:11:11 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c (eval_string_with_cref): use rb_vm_get_ruby_level_next_cfp() 
-	  instead of vm_get_ruby_level_caller_cfp().  checking a upper frame
-	  is not enough.  [ruby-dev:37984]
-
-	* proc.c, vm_core.h: declare rb_vm_get_ruby_level_next_cfp()
-	  on vm_core.h.
-
-Thu Feb 12 22:51:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (hide_obj): OBJ_FREEZE() is not an expression.  a patch
-	  from nagachika <nagachika00 AT gmail.com> at [ruby-dev:37977].
-
-	* compile.c (insn_set_sc_state): fixed typoe.
-
-Thu Feb 12 19:42:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (compile_array_, defined_expr, iseq_compile_each): hide
-	  and freeze internal literal objects, to prevent from modifying.
-	  [ruby-dev:37959]
-
-	* iseq.c (insn_operand_intern): copy internal literal objects.
-
-	* insns.def (putstring, duparray): ditto.
-
-	* string.c (rb_str_replace): exported.
-
-Thu Feb 12 17:17:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_ungetc): calculates new position
-	  before reallocation.  [Bug#1099]
-
-Mon Feb  9 20:11:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (load_conv_function51932): fixed for the
-	  case IMultiLanguage is not available.  [ruby-dev:37950]
-
-Mon Feb  9 11:31:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_encoding_set): ignore second argument when external and
-	  internal are same. [ruby-dev:37939]
-
-Sun Feb  8 23:28:05 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/st.h, st.c: order entries by a linked list instead of
-	  a loop to fix iteration miss when hash is modified during iteration.
-	  [ruby-dev:37910]
-
-Sun Feb  8 22:44:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/backward/rubysig.h (rb_thread_blocking_region_begin),
-	  (rb_thread_blocking_region_end): marked as deprecated.
-
-	* include/ruby/backward/rubysig.h (TRAP_BEG): fix for C++.  a
-	  patch from Aman Gupta at [ruby-core:21934]
-
-Sun Feb  8 19:05:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/backward/rubysig.h: extern "C" was missing.
-	  [ruby-core:21929]
-
-Sun Feb  8 18:34:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_s_binread): ensures file path.  [ruby-dev:37940]
-
-Fri Feb  6 23:28:33 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fread): use rb_io_wait_readable for retry
-	  avoid Errno::EINTR on ruby -e 'trap(:CHLD) {}; spawn("sleep 1"); STDIN.read'
-
-Fri Feb  6 20:37:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* signal.c (register_sigaltstack): ignore sigaltstack error.
-	  It fails on OpenBSD 4.4 when pthread library is linked.
-
-Fri Feb  6 12:03:47 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (process_options): -K and -E in shebang should be reflect to
-	  default_external. [ruby-dev:37920]
-
-Fri Feb  6 02:51:59 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_codepoint): update RDoc for
-	  String#codepoints.  a patch from Radoslaw Bulat in
-	  [ruby-core:21835]
-
-Fri Feb  6 01:09:13 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (cont_mark, cont_capture, cont_restore_1): use #else instead
-	  of #elif.  a patch from NISHIMATSU Takeshi <t_nissie at yahoo.co.jp>
-	  in [ruby-list:45856].
-
-Thu Feb  5 07:39:33 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/readline/readline.c (Init_readline): remove_history(0) may be
-	  NULL.  [ruby-dev:37891]
-
-Thu Feb  5 03:55:22 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (LOCALTIME): should call tzset() before localtime_r().
-	  [ruby-dev:37896]
-
-Wed Feb  4 11:45:06 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/mkexports.rb: shouldn't export DllMain.
-	  reported at http://pc11.2ch.net/test/read.cgi/tech/1233686068/21
-
-Wed Feb  4 10:12:05 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): should support 't' format
-	  modifier to handle PRIdPTRDIFF.  thanks for the info from
-	  Kazuhiro NISHIYAMA.  [ruby-core:21807]
-
-Tue Feb  3 23:37:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): resets EOF flag after parse.
-
-Tue Feb  3 14:12:10 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: validate data before sending to a server.
-	  [ruby-core:20320]
-
-Tue Feb  3 12:09:08 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (hmac_md5): should use String#ord to get ascii
-	  code from the one-character string.
-
-Mon Feb  2 17:05:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext): should not be infected from other
-	  load paths.
-
-Sat Jan 31 19:09:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_require_safe): raises when the path to be loaded is
-	  tainted.  [ruby-dev:37843]
-
-Mon Feb  2 08:12:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb (Server#serve): gets rid of hardcoded
-	  platform names. (win64 support)
-
-	* lib/resolv.rb (Resolv::Hosts::DefaultFileName),
-	  (Resolv::DNS::Config.default_config_hash): tries win32/resolv on
-	  mswin64 too. (win64 support)
-
-	* lib/rubygems/specification.rb (Gem::Specification#ruby_code):
-	  aded mswin64. (win64 support)
-
-	* lib/drb/extservm.rb (DRb::ExtServManager#invoke_service_command):
-	  spawn is better to start a process in background.
-
-	* ext/extmk.rb: uses FNM_SYSCASE. (win64 support)
-
-	* instruby.rb: installs win32.h on mswin64 platform. (win64 support)
-	  [ruby-core:21722]
-
-Mon Feb  2 12:41:52 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* complex.c (f_signbit): regard NaN as a positive value.
-	  [ruby-dev:37861].
-
-Mon Feb  2 06:51:36 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): Windows' filesystem encoding is
-	  sometimes ANSI code page and sometimes OEM code page. we should check
-	  whether code page is used.
-
-Sun Feb  1 05:19:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_const_get_0), vm_insnhelper.c (vm_get_ev_const):
-	  avoids infinite self recursion autoload.  [ruby-core:21696]
-
-Fri Jan 30 14:31:14 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/make-snapshot (prereq): remove enc.mk from tarball because
-	  BSD make checks $(srcdir)/enc.mk and try to run $(builddir)/enc.mk.
-
-Fri Jan 30 14:11:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: extract comile rules to each target for VC++.
-
-Fri Jan 30 12:59:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (RUBYDEF): depends on makefiles.
-
-	* cygwin/GNUmakefile.in (RUBYDEF): adds DATA to non-function symbols
-	  which is not marked as T.
-
-Tue Jan 20 16:17:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (ruby_Init_{Continuation_body,Fiber_as_Coroutine}): prefixed
-	  with ruby_ to export.
-
-	* ext/continuation/continuation.c, ext/fiber/fiber.c: ditto.
-
-Thu Jan 29 16:22:41 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* load.c (rb_feature_provided): should not calculate len by pointer
-	  subtraction because feature may be a expanded path.
-	  [ruby-core:21267]
-
-Thu Jan 29 14:12:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BASERUBY): erases RUBYOPT at the test.
-
-	* configure.in (OBJCOPY): not used on Windows.
-
-Thu Jan 29 12:29:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (FileUtils#rake_system): no longer needs workaround
-	  on Windows.  [ruby-core:21339]
-
-	* lib/rake/win32.rb (Rake::Win32#rake_system): ditto.
-
-	* lib/rake/win32.rb (Rake::Win32#win32_system_dir): no longer
-	  needs environment variables other than APPDATA now.
-
-	* lib/rake.rb (Rake::Application#standard_system_dir): uses
-	  platfrom specific definition on Windows system.
-
-Thu Jan 29 00:24:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_run): previous change didn't resolve the
-	  problem.
-
-Fri Jan 30 01:39:27 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (top_compstmt, top_stmts, top_stmt): prohibit BEGIN {} in
-	  non-toplevel scope.  [ruby-core:21657]
-
-	* test/ruby/test_beginendblock.rb (test_begininclass): add a test for
-	  above.
-
-Wed Jan 28 22:51:12 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_run): desperately guard the variable.
-	  [ruby-core:20576]
-
-Mon Jan 19 11:46:39 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c, eval.c (rb_f_block_given_p): move definition of
-	  "iterator?" and "block_given?" to make static.
-
-	* vm.c (vm_get_ruby_level_caller_cfp): make it static.
-
-	* eval_intern.h, vm_insnhelper.c: move decl. of
-	  vm_get_ruby_level_caller_cfp()
-	  from eval_intern.h to vm_insnhelper.c.
-
-Mon Jan 19 11:27:39 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: add a prefix "rb_" to exposed functions
-	  vm_get_ruby_level_next_cfp(), rb_vm_make_env_object(),
-	  vm_stack_to_heap(), vm_make_proc(), vm_invoke_proc(),
-	  vm_get_sourceline(), vm_cref(), vm_localjump_error(),
-	  vm_make_jump_tag_but_local_jump(), vm_jump_tag_but_local_jump().
-  	  This changes may affect only core because most of renamed functions
-	  require a pointer of not-exposed struct such as rb_thread_t or NODE.
-	  In short, they are core functions.
-
-	* cont.c, eval.c, eval_intern.h, load.c, proc.c, thread.c,
-	  vm_core.h, vm_dump.c, vm_eval.c, vm_exec.c, vm_insnhelper.c:
-	  ditto.
-
-Mon Jan 19 11:02:30 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c: add a prefix "rb_vmdebug_" to
-	  vm_stack_dump_raw(), vm_stack_dump_raw_current(),
-	  vm_env_dump_raw(), vm_proc_dump_raw(), vm_stack_dump_th(),
-	  vm_debug_print_register(), vm_thread_dump_regs(),
-	  vm_debug_print_pre(), vm_debug_print_post(),
-	  vm_thread_dump_state().
-	  This change also may affect core (in fact, user of
-	  above functions may be only ko1).
-
-	* vm_core.h: ditto.
-
-	* vm_exec.h (SDR2): remove duplicate definition.
-
-Mon Jan 19 09:53:43 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c:
-	  rename ruby_iseq_disasm_insn() -> rb_iseq_disasm_insn().
-	  rename ruby_iseq_disasm() -> rb_iseq_disasm().
-
-	* compile.c:
-	  rename ruby_iseq_compile() -> rb_iseq_compile_node().
-	  rename ruby_iseq_translate_threaded_code() ->
-	         rb_iseq_translate_threaded_code().
-	  rename ruby_insns_name_array() -> rb_insns_name_array().
-	  rename ruby_iseq_build_from_ary() -> rb_iseq_build_from_ary().
-
-	* iseq.c, compile.c: remove ruby_insn_make_insn_table() and make
-	  static function insn_make_insn_table().
-
-	* iseq.h, ruby.c, vm.c, vm_core.h, vm_eval.c, vm_dump.c, 
-	  blockinlining.c: ditto.
-	  Rename strange "ruby_" prefix to "rb_" prefix.
-	  This changes may affect only core because renamed functions
-	  require a pointer of rb_iseq_t which is not exposed.
-
-Mon Jan 19 08:56:53 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm_eval.c (rb_f_local_variables): move definition from eval.c
-	  to vm_eval.c because vm_collect_local_variables_in_heap() should
-	  be static function.
-
-	* vm.c (vm_collect_local_variables_in_heap): make it static.
-
-Tue Jan 27 14:41:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (RUBYDEF): needs DATA marks to export
-	  non-function symbols.  [ruby-core:21582]
-
-	* win32/mkexports.rb (Exports::Mingw#each_export): ditto.
-
-Sun Jan 25 12:17:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (RUBYDEF): needs read-only section too.
-
-Tue Jan 20 15:32:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (miniruby): renames and then removes, to get rid of
-	  EPERM on cygwin and mingw.
-
-	* Makefile.in ($(LIBRUBY_SO)): use wildcard option of objcopy.
-
-	* configure.in (DLDFLAGS): do not export all symbols.
-
-	* cygwin/GNUmakefile.in (RUBYDEF): rejects symbols prefixex with
-	  Init_.
-
-	* win32/mkexports.rb (Exports::Mingw): includes all symbols except for
-	  prefixed with Init_ as well as mswin32.
-
-Wed Jan 28 15:24:11 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* math.c: SEGV is caused by implicit rb_to_float declaration
-	  test_complexrational.rb: [BUG] in IA-64 architecture
-
-Tue Jan 27 03:23:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): should point correct path to
-	  ruby.h and defines.h.   [ruby-core:21570]
-
-Mon Jan 26 16:00:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_aset): fixed arguments evaluation order.
-
-Sun Jan 25 12:02:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (clean-ext): condition of EXTS was inverted.
-
-Sun Jan 25 11:50:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile):fixed the variables order because
-	  converter proc refers the separator.
-
-Sun Jan 25 11:25:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (RMDIRS): remove directory and
-	  parents.
-
-	* Makefile.in, win32/Makefile.sub (distclean-rdoc): added to remove
-	  temprary rdoc.
-
-	* Makefile.in, win32/Makefile.sub (clean-ext): skips non-existent
-	  directories.
-
-	* common.mk (clean, distclean): cleans rdoc.
-
-	* common.mk (clean-extout): removes extout directory.
-
-	* configure.in (RMDIRS, RMALL): added to clean extout.
-
-	* lib/fileutils.rb (FileUtils#rmdir): added :parents option.
-
-	* lib/mkmf.rb (create_makefile): cleans installed files at clean
-	  instead of distclean.
-
-	* lib/mkmf.rb (create_makefile): added clean-so and clean-rb.
-
-	* lib/mkmf.rb (def init_mkmf): added DISTCLEANDIRS.
-
-	* lib/un.rb (rmdir): added -p option.
-
-	* tool/rmdirs, win32/rmdirs.bat: removes directory and the parents.
-
-	* win32/rm.bat: added -r option.
-
-Sun Jan 25 09:09:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (join_path): use strlcat() to force link.
-
-	* dir.c (glob_helper): no strcpy() is needed since len is known.
-
-Sat Jan 24 08:22:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): tools under the top source
-	  directory are not installed, so unusable outside extmk.rb.
-
-Fri Jan 23 17:24:31 2009  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (Enumerator#inspect): avoid warning.
-
-Fri Jan 23 15:12:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (mkintpath): new function which converts native path
-	  to format acceptable in Makefile.
-
-	* lib/mkmf.rb (configuration): leaves PATH_SEPARATOR unchanged.
-
-	* lib/mkmf.rb (configuration): convers srcdir, topdir and hdrdir.
-	  a patch by Alexey Borzenkov <snaury AT gmail.com> at
-	  [ruby-core:21448].
-
-	* lib/mkmf.rb (try_func): got rid of c-mode confusion.
-
-Fri Jan 23 13:26:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (trap_handler): also accepts symbols.  [ruby-dev:37823]
-
-Thu Jan 22 18:14:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): removes installed files under
-	  extout at distclean.
-
-Thu Jan 22 17:12:37 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI.parse): generate only key on params hash
-	  if request have only key uri parameters.
-		(ex. index.cgi?aaa&bbb=1 # params=>{:aaa=>[],:bbb=>["1"]})
-
-	* test/cgi/test_cgi_core.rb: fix test for key only params.
-
-Thu Jan 22 16:29:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/installer.rb (Gem::Installer#initialize): fixed
-	  typos.
-
-Thu Jan 22 14:53:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_process.rb (MANDATORY_ENVS): needs RUBYLIB to run
-	  tests without install.
-
-Thu Jan 22 12:19:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (define_final): cannot define finalizer for immediate
-	  values.  [ruby-core:21500]
-
-	* gc.c (define_final): freezes or hides internal values.
-
-Thu Jan 22 11:33:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_time_timeval): made a real prototype.  a patch from
-	  Marcus Rueckert <darix AT opensu.se> at [ruby-core:21492].
-
-Wed Jan 21 21:43:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_ungetbyte, rb_io_ungetc): allows nil to reset EOF
-	  flag with ungetting nothing.
-
-	* ruby.c (load_file_internal): rests EOF flag to make possible to
-	  load from stdin after reading data.
-
-Wed Jan 21 15:32:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_ungetbyte, rb_io_ungetc): clears EOF flag.
-
-Wed Jan 21 13:58:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h (FMODE_EOF): EOF flag on TTY.
-
-	* io.c (io_set_eof): sets EOF flag for TTY.
-
-	* io.c (io_seek): clears EOF flag.
-
-	* io.c (io_fillbuf): returns EOF if already met EOF.  [ruby-dev:37798]
-
-	* io.c (io_fillbuf, io_fread, io_getpartial): sets EOF.
-
-Wed Jan 21 14:41:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* array.c (take_items): to_ary() raises ArgumentError if cannot to
-	  convert to Array. [ruby-dev:37797]
-
-Wed Jan 21 21:12:47 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* introduces r21693 again for merging r21713.
-
-Tue Jan 20 19:12:18 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* reverts r21693.
-
-Tue Jan 20 18:49:59 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/rdoc/ri/path.rb: Gem::Enable was removed.
-	  Use just defined?(Gem).
-	  And this prevents unexpected directory creation at
-	  installation. [ruby-core:20990]
-
-Tue Jan 20 17:59:52 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Reverts r21598 and r21599 because the original behavior is
-	  intentional.
-
-Tue Jan 20 09:26:05 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_buf_push): maybe a bug.
-
-	* ext/nkf/nkf-utf8/nkf.c (options): no need to support help option.
-
-Tue Jan 20 06:48:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (take_items), enum.c (enum_zip): tries to convert to
-	  array first.  [ruby-core:21442]
-
-Tue Jan 20 03:50:37 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Update nkf to 2.0.9.
-	  revert -s meaning as Shift_JIS, etc.
-
-Mon Jan 19 14:31:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_execute_interrupts): needs
-	  rb_signal_buff_size to be declared.
-
-Mon Jan 19 13:34:25 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (require_libraries): reset th->parse_in_eval while
-	  loading libraries.  fixes [ruby-dev:37780]
-
-Sat Jan 17 21:04:27 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/erb.rb: changes style of the rdoc for suppressing
-	  warning. [ruby-core:21117] 
-
-Sat Jan 17 17:58:22 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/xmp.rb: multilingualizes XMP::StringInputMethod.
-	  [ruby-core:21383].
-
-Sat Jan 17 11:12:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (vm_stack_dump_each): initialized at declarations.
-
-	* vm_dump.c (rb_vm_bugreport): constified to suppress a warning.
-
-Sat Jan 17 19:33:48 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (VCSUP): fixed the cases for git-svn or git.
-
-	* win32/Makefile.sub (VCSUP): ditto.
-
-	* Makefile.in (up): `cd' is necessary for git and git-svn.
-
-Fri Jan 16 18:51:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (up): tell nmake that need to run command via
-	  shell.
-
-Fri Jan 16 17:33:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (Makefile): set VCS and VCSUP to support `git svn'
-	  and git.
-
-	* Makefile.in, win32/Makefile.sub (up): split from common.mk.
-
-Mon Dec 29 22:37:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): template f should not accept non float
-	  values.  [ruby-dev:37656]
-
-Fri Jan 16 18:43:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): includes all rules and expand
-	  configured values from the environment to create *.inc, sets RM
-	  for ripper.c, and needs chdir if absolute path is given with
-	  -exported option.
-
-Thu Jan 15 14:27:27 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* LEGAL: Added information for missing/langinfo.c
-
-Fri Jan 16 13:39:24 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/unit.rb: temporarily merges Kouji's patch without
-	  maintainer's permission in order to release 1.9.1 RC2. 
-	  [ruby-core:21364] .
-	  Patch by Takao Kouji <kouji AT takao7.net>.
-
-Fri Jan 16 13:28:09 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/test_mini_test.rb: the number of assertions must be
-	  exactly equal to the number of assertion method calls that the end-user
-	  would write. [ruby-dev:37703]
-
-	* test/minitest/test_mini_spec.rb: ditto.
-
-	* lib/minitest/unit.rb: ditto. 
-	  Patch by David Flanagan <david AT davidflanagan.com>. [ruby-core:21350]
-
-Fri Jan 16 12:24:39 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (thread_start_func_2): call ruby_cleanup() if thread is
-	  main thread.  [ruby-dev:37624]
-
-Fri Jan 16 12:27:50 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc,
-	  miniprelude.c, newline.c): if dependencies is newer than targets or
-	  targets don't exist, try to create targets with BASERUBY. no need to
-	  detect errors there because the absence of BASERUBY is not abnormal.
-	  after the try, if the targets still don't exist, copy them from
-	  $(srcdir).
-
-Fri Jan 16 11:47:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_parse_in_main): fixed typo.
-
-Fri Jan 16 02:25:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_thread_execute_interrupts): if signal is already
-	  buffered, main thread should wait until timer thread delivers it.
-
-	* thread.c (timer_thread_function): should defer delivery of a signal
-	  if main thread does not yet trap a previous one.  [ruby-dev:37676]
-
-Fri Jan 16 01:42:50 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (call_trace_proc): as Matz said ([ruby-core:21183]),
-	  should skip rb_str_new2() if rb_sourcefile() returns NULL.
-	  rb_sourcefile() returns NULL if frame is toplevel of Fiber.
-	  [ruby-core:21161] [Bug #985]
-
-Fri Jan  9 12:29:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (test-sample), rubytest.rb: use runruby.rb
-
-Fri Jan 16 01:09:37 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (process_options): decrement parse_in_eval to recognize
-	  parsing main or normal eval script.
-
-	* compile.c (rb_parse_in_main): return 1 if parsing main script.
-	 (if parse_in_eval is negative value, it means main script)
-
-	* parse.y (yycompile0): check rb_parse_in_main() to accumulate
-	  script text.  Bug #848 [ruby-core:20450]
-
-Fri Jan 16 00:57:34 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/debug.rb: as wanabe-san pointed out,
-	  set_trace_func should be completely final task in debug.rb.
-	  Bug #847 [ruby-core:20449]
-
-Fri Jan 16 00:27:03 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (rb_vm_inc_const_missing_count, ruby_vm_const_missing_count): 
-	  added.
-
-	* vm_insnhelper.h: ditto.
-
-	* variable.c (rb_const_get_0), insns.def: Constants should not be
-	  cached if const_missing is called.  [ruby-core:21059] [Bug #967]
-
-	* bootstraptest/test_class.rb: add a test.
-
-Fri Jan 16 00:25:09 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: btest-ruby should receive option with OPTS.
-
-Fri Jan 16 00:21:10 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc,
-	  miniprelude.c, newline.c): shoudn't copy when $(srcdir) != ".", too.
-	  (this is a workaround.  we need more strict check.)
-
-	* win32/Makefile.sub ($(INSNS)): shound't remove BASERUBY.
-
-Fri Jan 16 00:19:55 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (gc_with_gvl): suppress warnings.
-
-Thu Jan 15 20:44:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* tool/file2lastrev.rb: RUBY_REVISION must be an integer.
-
-Thu Jan 15 15:55:31 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (enc_set_default_encoding): should not treat US-ASCII
-	  special here.  a patch from Yui NARUSE in [ruby-dev:37769].
-	  [ruby-dev:37699]
-
-Thu Jan 15 13:10:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (MISSING): added langinfo on mingw
-	  and mswin.
-
-	* encoding.c (rb_locale_charmap): use environments on mingw and mswin.
-
-	* missing/langinfo.c (nl_langinfo_codeset): MS-Windows Japanese
-	  environment uses Windows-31J derived from Shift_JIS, not EUC-JP.
-
-Thu Jan 15 12:10:39 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc,
-	  miniprelude.c, newline.c): copy only when $(srcdir) != pwd.
-
-Wed Jan 14 23:57:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): fallback to codepage if no
-	  locale is found.  [ruby-core:21110]
-
-	* missing/langinfo.c (nl_langinfo_codeset): returns NULL if no
-	  locale is found.
-
-Wed Jan 14 22:38:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (negative_size_allocation_error_with_gvl): abolish a warning.
-	  (negative_size_allocation_error): ditto.
-
-	* ext/openssl/ossl.c (ossl_raise): ditto.
-
-Thu Jan 15 13:10:58 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (COMPILERFLAG): for enc/trans/gb18030.c.
-
-Thu Jan 15 00:06:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/gb18030.trans: get rid of a 1.9 feature for cross
-	  compile.  [ruby-core:21345]
-
-Wed Jan 14 20:05:05 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/gb18030.trans, gb18030-tbl.rb:
-	  new Chinese GB18030 transcoding (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-	* transcode_data.h, transcode.c, tool/transcode_tblgen.rb:
-	  added support for GB18030-specific 4-byte sequences
-	  (with Yoshihiro Kambayashi)
-
-Wed Jan 14 16:16:19 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/extconf.rb: check ncursesw earlier than ncurses to
-	  support UTF-8 strings.   non UTF-8 strings should be converted
-	  explicitly.   [ruby-core:21094]
-
-Wed Jan 14 13:09:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/extconf.rb (gai_strerror): checks if available and if
-	  returns const pointer.
-
-	* ext/socket/getaddrinfo.c (gai_strerror): defines only if non
-	  available.  [ruby-core:21328]
-
-Wed Jan 14 12:39:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_wait_readable, rb_io_wait_writable): need rb_fd_ptr.
-
-	* io.c (appendline): reformed.
-
-	* io.c (rb_io_s_pipe): reduced nest of rb_ensure of main block.
-
-Tue Jan 13 21:45:53 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/ostruct.rb (OpenStruct#inspect): fixed the recursion check.
-	  Patch by Kornelius Kalnbach.  [ruby-core:20992].
-
-	* test/ostruct/test_ostruct.rb: test for inspect.
-	  Patch by Kornelius Kalnbach.  [ruby-core:20992].
-
-Tue Jan 13 21:28:14 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* object.c (rb_obj_not_match): rdoc.
-	  Patch by Kornelius Kalnbach.  [ruby-core:20991]
-
-Tue Jan 13 21:44:30 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_reopen, rb_io_init_copy): should register fptr to pipe_list
-	  when copying pipe fptr.
-
-Tue Jan 13 18:21:44 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_close_read): call rb_io_fptr_cleanup() instead of
-	  fptr_finalize() because the fptr has special finalizser if it is a
-	  pipe.  [ruby-dev:37757] (3)
-
-Tue Jan 13 18:19:49 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_initialize): workaround for Windows. [ruby-dev:37686]
-          (also see [ruby-dev:37721])
-
-Tue Jan 13 17:29:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/make_transdb.rb (converters): should not depend on the
-	  hash order for cross compile.
-
-Tue Jan 13 16:39:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/intern.h, thread.c, win32/Makefile.sub (rb_fdset_t,
-	  rb_fd_init, rb_fd_term, rb_fd_zero, rb_fd_set, rb_fd_clr, rb_fd_isset,
-	  rb_fd_select, rb_fd_ptr, rb_fd_max, HAVE_RB_FD_INIT): new type,
-	  functions, and macros for Windows.
-
-	* win32/win32.c (extract_fd, rb_w32_select): use rb_fdset_t to expand
-	  fd_array if needed.  [ruby-core:19946]
-
-	* win32/win32.c (copy_fd): new funcion for rb_w32_select().
-
-Tue Jan 13 12:31:54 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/file2lastrev.rb (get_revisions): fixes problem with
-	  svn on cygwin. [ruby-dev:37702].
-	  Patch by Kouhei Sutou.
-
-Tue Jan 13 11:58:04 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/input-method.rb: IRB did not prompt for MSwin32.
-	  [ruby-dev:37686].
-	  Patch by arton <artonx AT yahoo.co.jp>.
-
-Tue Jan 13 12:10:42 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/{getaddrinfo,getnameinfo}.c: need to include ws2tcpip.h
-	  on Windows.
-
-Tue Jan 13 03:07:28 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: require "tool/mdoc2man.rb" before chdir if needed.
-
-Tue Jan 13 02:54:54 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: use headers instead of "netdb.h" in checking
-	  getnameinfo() and getaddrinfo() because Windows doesn't have it.
-	  [ruby-dev:37757] (1)
-
-	* ext/socket/sockport.h (SA_LEN): use sockaddr_in6 when defined AF_INET6
-	  if INET6 is not defined.  winsock2's getaddrinfo() returns
-	  sockaddr_in6 if ipv6 is available.
-
-Wed Jan 14 13:19:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_aspawn): should not escape with carret
-	  unless using cmd.exe.
-
-Tue Jan 13 02:21:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (internal_cmd_match): extracted from
-	  is_internal_cmd.
-
-	* win32/win32.c (argv_size, join_argv): escapes redirection, pipe
-	  and carret punctuations with carrets.
-
-	* win32/win32.c (rb_w32_aspawn): ditto, and redirections and pipe
-	  have no meanings.
-
-Tue Jan 13 02:07:38 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: use Encoding.find("locale") instead of
-	  Encoding.locale_charmap
-
-Tue Jan 13 00:57:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_unpack_sockaddr_in): check too short
-	  sockaddr.
-	  (sock_s_unpack_sockaddr_un): ditto.
-
-Mon Jan 12 17:23:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (assert_nothing_raised): removes the
-	  current trace to get rid of an issue of MiniTest::Unit#location.
-
-Mon Jan 12 16:49:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (install): erased a garbage.
-
-Mon Jan 12 16:45:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (open_dir_handle): extracted from rb_w32_opendir.
-
-	* win32/win32.c (winnt_stat): gets rid of strange behavior of
-	  GetFileAttributes().  [ruby-core:21269]
-
-Mon Jan 12 11:59:19 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (ruby_xmalloc, ruby_xrealloc, ruby_xfree):
-	  enable to use them without GVL.
-	  if GC is invoked, acquire GVL during GC.
-	  if NoMemoryError is raised, acquire GVL and raise it.
-
-Mon Jan 12 10:39:19 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: fix comment (terminology: Global VM Lock).
-
-	* thread.c (blocking_region_begin, blocking_region_end):
-	  save and clear th->blocking_region_buffer.
-
-	* thread.c (rb_thread_call_with_gvl): check if it has GVL.
-
-	* thread.c (ruby_thread_has_gvl_p): added.
-
-	* vm_core.h: add decls.
-
-Sun Jan 11 16:53:14 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb (PercentScanner): remove PercentScanner. fixed % after
-	  %> bug. [ruby-dev:37751] [Bug #997] 
-
-	* test/erb/test_erb.rb: ditto
-
-Sun Jan 11 09:47:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_s_create): set nil as the value if assoc length
-	  is not enough.  [ruby-core:21249]
-
-Sat Jan 10 20:26:17 2009  Tanaka Akira  <akr@fsij.org>
-
-	* version.h: make version string succinct:
-	  "ruby 1.9.1p5000 (2009-01-10 trunk 21414) [i686-linux]".
-
-Sat Jan 10 19:05:13 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_restore_1): should not be inlined.
-
-Fri Jan  9 13:20:08 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: rescue abnormal Encoding.locale_charmap value.
-
-Fri Jan  9 10:40:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_process.rb (TestProcess::MANDATORY_ENVS): some
-	  platforms need environments for shared objects.
-
-Thu Jan  8 17:32:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb: should not depend on a library which does not exist
-	  in 1.8.
-
-Wed Jan  7 22:13:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (man, gem): fixed errors.
-
-Wed Jan  7 17:14:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb: use installed libraries.  [ruby-core:21006]
-
-Wed Jan  7 17:13:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
- 
- 	* instruby.rb (gem), lib/rubygems/defaults.rb (Gem.default_dir):
- 	  use version invariant configuration.
-
-	* instruby.rb: use installed libraries.  [ruby-core:21006]
-
-	* instruby.rb (gem), lib/rubygems/defaults.rb (Gem.default_dir):
-	  use version invariant configuration.
-
-Thu Jan  8 00:31:58 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_no_match): don't count up as two
-	  assertions.
-
-Mon Jan  5 12:52:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (init_env): use user profile folder than personal
-	  folder.
-
-Mon Jan  5 17:59:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (cygwin): needs properly implemented nl_langinfo().
-	  [ruby-core:21110]
-
-	* missing/langinfo.c: added as suggested at [ruby-core:21015], from
-	  http://www.cl.cam.ac.uk/~mgk25/ucs/langinfo.c.
-
-	* missing/langinfo.c (nl_langinfo_0): fixed typos for SJIS.
-
-Mon Jan  5 17:38:40 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): use GetConsoleCP() instead of
-	  GetACP() because external encoding should be console's one.
-
-	* encoding.c (rb_filesystem_encoding): use GetOEMCP() instead of
-	  GetACP() because VFAT/FAT32 uses OEM CP.
-
-Mon Jan  5 16:26:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): use ANSI codepage for file
-	  system on cygwin.
-
-	* encoding.c (rb_locale_charmap): reverted.  [ruby-core:21110]
-
-Mon Jan  5 16:15:00 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/curses/curses.c (free_window): use xfree instead of free.
-	  [ruby-dev:37200]
-
-Mon Jan  5 08:41:13 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_stat): need type check for non string values.
-	  [ruby-dev:37673]  fix: #964
-
-	* file.c (rb_file_s_size, rb_file_s_atime, rb_file_s_mtime,
-	  rb_file_s_ctime, rb_f_test): ditto.
-
-Mon Jan  5 07:58:37 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c (rb_f_srand): update RDoc.  [ruby-core:21113]
-
-Thu Jan  8 07:30:52 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.redirectable?): reverted https redirection.
-
-Sun Jan  4 18:10:10 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/gbk.trans, gbk-tbl.rb:
-	  new Chinese GBK transcoding (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Sun Jan  4 17:55:55 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added tests for GB2312
-	  (from Yoshihiro Kambayashi)
-
-	* enc/trans/chinese.trans: set valid byte patterns for
-	  GB2312 and GB12345
-
-Sun Jan  4 17:39:39 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/big5.trans, big5-tbl.rb:
-	  new Chinese Big5 transcoding (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Sun Jan  4 15:41:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding, rb_locale_charmap): uses
-	  codepage on cygwin.  [ruby-core:20994]
-
-Sun Jan  4 11:58:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (ruby_float_step): extracted from num_step().
-
-	* range.c (range_step): uses ruby_float_step() for float range.
-	  [ruby-dev:37691]
-
-Sun Jan  4 11:11:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): does not use both of makefile.rb and
-	  extconf.rb at the same time.
-
-	* lib/mkmf.rb (DLLIB): depends on Makefile.  [ruby-core:21096]
-
-Sun Jan  4 03:30:18 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (maygvl_copy_stream_wait_read): renamed to add prefix to
-	  express GVL state.
-	  (nogvl_copy_stream_wait_write): ditto.
-	  (nogvl_copy_stream_sendfile): ditto.
-	  (maygvl_copy_stream_read): ditto.
-	  (nogvl_copy_stream_write): ditto.
-	  (nogvl_copy_stream_read_write): ditto.
-	  (nogvl_copy_stream_func): ditto.
-
-Sun Jan  4 00:30:50 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb: merged r20850, r17881, r16811, r16763, r16748, r15829, 
-	  r15794 and r15698 from ruby_1_8.
-
-	* test/erb/test_erb.rb: ditto.
-
-Sat Jan  3 22:24:36 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk, Makefile.in, win32/Makefile.sub (INSNS): move the macro
-	  definition from common.mk to {Makefile.in,win32/Makefile.sub}.
-	  [ruby-dev:37678]
-
-Sat Jan  3 15:30:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/chinese.trans: added for transcoding EUC-CN and GB12345.
-
-	* enc/trans/GB/: ditto.
-
-Sat Jan  3 15:26:30 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/euc-cn.c: renemed from gb2312.c because GB2312 is
-	  the name of a CSS.  it's encoding name is "EUC-CN".
-
-Sat Jan  3 03:00:42 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk, Makefile.in, win32/Makefile.sub ($(INSNS), node_name.inc,
-	  known_errors.inc, miniprelude.c, newline.c): move rules from common.mk
-	  to {Makefile.in,win32/Makefile.sub} for nmake.
-	  [ruby-core:20993]
-
-Fri Jan  2 23:51:41 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_sleep.rb (test_sleep_5sec): stop gc.
-
-Fri Jan  2 23:36:10 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: don't apply socktype hack [ruby-core:184] for
-	  sock_s_getaddrinfo.
-	  (sock_getaddrinfo): add socktype_hack argument.
-	  (sock_addrinfo): call sock_getaddrinfo with socktype_hack.
-	  (sock_s_getaddrinfo): call sock_getaddrinfo without socktype_hack.
-	  [ruby-dev:37674]
-
-Fri Jan  2 23:33:38 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/missing.h, sprintf.c: get rid of a warning of VC++.
-
-Fri Jan  2 10:20:24 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/singleton.rb: fix documentation. [ruby-core:21038]
-
-Fri Jan  2 22:25:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c: use sigaction instead of sigset.  [ruby-core:21021]
-
-Fri Jan  2 22:20:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb (test_wait_and_sigchild): remove debug
-	  output.
-
-Fri Jan  2 06:43:58 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* signal.c (rb_signal_buff_size): defined for check whether signal
-	  is in the buffer or not.
-
-	* thread_pthread.c (thread_timer): don't exit the loop when signal
-	  is in the buffer. [ruby-dev:37637]
-
-Thu Jan  1 22:27:55 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec: fix for builddir != srcdir
-
-	* Makefile.in: ditto.
-
-Thu Jan  1 20:50:09 2009  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* process.c (before_exec): it makes no sense for a conditional
-	  expression to return a void value.
-
-Thu Jan  1 15:08:46 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/flie2lastrev.rb: supports git repositories which are cloned
-	  from a git-svn gateway.
-	  Patch by Hongli Lai. [ruby-core:21020]
-
-Thu Jan  1 07:42:36 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/singleton.rb: fix indentation of RDoc text.  [ruby-core:21029]
-
-Thu Jan  1 07:16:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (distclean-ext, realclean-ext): use EXTS as default.
-
-	* win32/Makefile.sub (distclean-ext, realclean-ext): try to remove ext
-	  directory.
-
-Thu Jan  1 06:56:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/file2lastrev.rb: unset PWD.
-
-Wed Dec 31 14:12:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_to_float): replaced by to_flo definition from
-	  math.c  [ruby-dev:37668]
-
-	* math.c (Need_Float): use rb_to_float().
-
-Wed Dec 31 19:35:57 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/README: follows the change of directory structure in rubyspec.
-
-	* spec/default.mspec: ditto. Also follows change of mspec command.
-
-	* Makefile.in: ditto.
-
-Wed Dec 31 15:45:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): don't check to_io because
-	  Zlib::GzipWriter#to_io returns the underlying IO.
-
-Wed Dec 31 14:52:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_digest.c (GetDigestPtr): use StringValueCStr
-	  instead of STR2CSTR.
-
-	* ext/openssl/ossl_pkey_ec.c (ossl_ec_key_initialize): ditto.
-	  (ossl_ec_group_initialize): ditto.
-
-Tue Dec 30 21:17:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: use sock_define_uconst for INADDR_*
-	  constants because Socket::INADDR_LOOPBACK should be 0x7f000001
-	  instead of -0xffffff.
-
-	* ext/socket/socket.c (sock_define_uconst): defined.
-
-Tue Dec 30 18:23:10 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.3.1 r4506.
-	* test/minitest/*.rb: ditto.
-
-Tue Dec 30 17:59:59 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: Minor fixes and tweaks in documentation.
-
-Tue Dec 30 17:03:51 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/dl/test/test_import.rb: fix a prototype decl.
-	  pointed out by Takehiro Kubo [ruby-core:20971].
-
-Tue Dec 30 16:56:09 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_blocking_region): add a comment.
-
-	* thread.c (rb_thread_call_without_gvl): added as a alias of
-	  rb_thread_blocking_region().
-
-	* thread.c (rb_thread_call_with_gvl): added.
-
-	* vm_core.h (rb_thread_t#blocking_region_buffer): added for
-	  rb_thread_call_with_gvl().
-
-Mon Dec 29 22:37:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* process.c (rb_waitpid): retries waitpid when EINTR.
-	  [ruby-core:19744].
-
-Mon Dec 29 23:41:42 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/dl/test/test_base.rb: add libc search logic.
-	  this patch is written by Takehiro Kubo.
-	  [ruby-core:20963] [Bug #932]
-
-	* ext/dl/dl.h: Add ",..." as the last argument.
-	  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-	* ext/dl/lib/dl/stack.rb: add add_padding() to calculate
-	  alignment.  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-	* ext/dl/test/test_func.rb: atof()'s return value is double.
-	  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-	* ext/dl/test/test_import.rb:
-	  - atof()'s return value is double.
-	  - The types of qsort's second and third argument are size_t.
-	  - fprintf()'s return value is int.
-	  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-Mon Dec 29 20:57:14 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/ri.1: new manpage.
-
-Mon Dec 29 17:53:24 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* bin/erb: accepts options in more flexible styles.
-
-Mon Dec 29 17:25:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/erb.rb (ERB): m17n of ERB. adds rdoc.
-	  fixes #712. c.f. [ruby-dev:37516].
-
-	* lib/erb.rb (ERB::Compiler#compile): recognizes magic comments.
-	  returns a pair of compiled script and its script encoding.
-
-	* lib/erb.rb (ERB#set_eoutvar): make generated scripts return a 
-	  string in correct encoding.
-
-	* lib/erb.rb (ERB#def_method): use Kernel#eval for encoding-awareness  
-	  of the evaluated string.
-
-	* bin/erb.rb (ERB::Main.run): adds -E and -U options.
-	  String is no longer Enumerable.
-
-	* man/erb.1: new manapage.
-
-	* test/erb/test_erb_m17n.rb: new test case for m17n features.
-
-Mon Dec 29 16:16:20 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (vm_set_eval_stack, vm_set_main_stack, vm_set_top_stack): 
-	  check stack overflow.  [ruby-dev:37646]
-
-Mon Dec 29 14:50:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Makefile.in (ext-clean): ext-clean always fails.
-
-	* ext/dl/ripper/extconf.rb: adds y.output into the clean list.
-
-Mon Dec 29 11:58:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_mutex_trylock): return false if Mutex owned
-	  by current thread.  [ruby-core:20943]
-
-	* thread.c (rb_mutex_lock): check dead lock (recursive lock) here.
-
-	* test/ruby/test_thread.rb: add a test.
-
-Mon Dec 29 07:15:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* cont.c: small RDoc fix mentioned from <radek.bulat at gmail.com>
-	  in [ruby-core:20921].
-
-Mon Dec 29 03:43:25 2008  Koichi Sasada  <ko1@atdot.net> 
-
-	* ruby.c (process_options): set th->base_block only while
-	  it is needed.  [ruby-dev:37634] [Bug #939]
-
-	* ruby.c (require_libraries): clear th->base_block before
-	  require libraries.
-
-Sun Dec 28 18:39:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c: not force to override snprintf/vsnprintf.
-	  [ruby-core:20824]
-
-Sun Dec 28 21:33:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ext/dl/test_base.rb : add BSD's case.
-
-Sun Dec 28 21:09:12 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/lib/dl/import.rb (DL::Importer#sizeof): follows
-	  a feature change in 1.9.
-
-Sun Dec 28 19:11:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): do not use snprintf/vsnprintf in
-	  msvcrt.
-
-	* sprintf.c: not force to override snprintf/vsnprintf.
-	  [ruby-core:20824]
-
-Sun Dec 28 17:10:13 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/dl/test/test_dl2.rb: modify strncpy, strcpy, qsort, types.
-	  Patch by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-	* ext/dl/test/test_base.rb: /lib/libc.so is x86_64 binary in x86_64 architecture.
-
-Sun Dec 28 18:36:33 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/rubygems/test_gem_command.rb
-	  (test_add_option_overlapping_common_and_local_options):
-	  follows r21066.
-
-Sun Dec 28 17:21:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/rubygems/test_ext_configure_builder.rb (test_self_build_fail):
-	  Extends pattern for FreeBSD's error message.
-
-Sun Dec 28 12:24:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_free, mutex_unlock): add qualifiers.
-
-Sun Dec 28 10:28:04 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_free): GC thread (main thread) has failed to unlock
-	  a mutex that is locked by another thread, which makes the mutex
-	  dangling in keeping_mutexes and causes [BUG] or stuck finally.
-	  Now unlocking is performed as locking thread.
-
-	* thread.c (mutex_unlock, rb_mutex_unlock, rb_mutex_unlock_all):
-	  mutex_unlock receives a thread.
-
-Sun Dec 28 05:44:44 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.3.1 r4505.
-	* test/minitest/*.rb: ditto.
-
-Sun Dec 28 00:43:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* runruby.rb: refactored to modify ENV as once.
-
-Sat Dec 27 22:41:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rdoc/test_rdoc_info_formatting.rb (setup, teadown): uses
-	  mktmpdir and removes it alfter the test.
-
-	* test/cgi/test_cgi_session.rb (setup, teadown): ditto.
-
-Sun Dec 28 12:53:10 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/dl/test/test_base.rb: use libc.dylib when the platform is darwin.
-
-Sat Dec 27 21:46:10 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/dl/test/test_base.rb: use lib64 when the architecture is x86_64.
-
-Sat Dec 27 20:26:59 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_argv_size): if an argument is empty, it's size
-	  is 2, not 0, because it will be converted to "".
-
-Sat Dec 27 19:40:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (after_exec): needs to reset before restart timer
-	  thread.
-
-	* thread.c (thread_start_func_2): stops timer thread if forked in
-	  the new thread.   [ruby-core:19385]
-
-	* thread.c (rb_thread_atfork, rb_thread_atfork_before_exec): DRY.
-
-Sat Dec 27 17:08:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .gdbinit (dummy_gdb_enums.special_consts): forces to load debug
-	  info on Mac OS X.
-
-	* .gdbinit (rp): added T_ZOMBIE.
-
-Sat Dec 27 16:18:02 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_frame_callee, rb_frame_caller): rb_frame_callee() 
-	  should return method id on current frame.
-	  add rb_frame_caller() to get method id on parent frame.
-	  Bug #884 [ruby-dev:37446]
-
-	* eval.c (rb_f_method_name): use rb_frame_caller()
-	  instead of rb_frame_callee().
-
-Sat Dec 27 15:28:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): show source and destination
-	  encoding.  [ruby-dev:37285]
-
-Sat Dec 27 15:23:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_yield_with_cfunc): rename parameter name
-	  "blockptr" to "blockargptr".
-
-Sat Dec 27 15:15:56 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (revision.h): ignores failure of file2lastrev.
-
-Sat Dec 27 15:02:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (process_options): fix to untouch th->mild_compile_error.
-	  [ruby-dev:37621], [ruby-dev:37620]
-
-Sat Dec 27 14:48:26 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.h, iseq.c (rb_iseq_new_main): add a type ISEQ_TYPE_MAIN.
-	  [ruby-dev:37619]
-
-	* compile.c (rb_dvar_defined, ruby_iseq_compile): ditto.
-
-	* iseq.c (iseq_data_to_ary, iseq_load): ditto.
-
-	* compile.c (iseq_compile_each): fix to check ip->compile_data.
-
-Sat Dec 27 14:29:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.redirectable?): permit https redirection.
-	  patch from Roman Shterenzon.  [ruby-core:20485]
-
-Sat Dec 27 13:36:55 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (get_errinfo): return th->errinfo value
-	  if normal errinfo place (dynamic local viriable) is not found.
-	  fixes Bug #732 [ruby-dev:37046].
-
-	* bootstraptest/test_proc.rb: add a test.
-
-Sat Dec 27 11:41:45 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_call_method, vm_call_cfunc): use original id instead of
-	  calling id when NODE_CFUNC or NODE_BMETHOD.
-	  fixes Bug #632 [ruby-core:19282].
-
-	* vm_eval.c (vm_call0, vm_call_super): ditto.
-
-	* vm_method.c (rb_add_method, rb_alias): store original id
-	  in nd_file field of NODE_METHOD.
-
-	* test/stringio/test_stringio.rb: add a test.
-
-Sat Dec 27 13:09:36 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/irb.1: adds -v, -h, -E, and -U.
-
-Sat Dec 27 09:48:54 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (Init_VM): create and define TOPLEVEL_BINDING at first.
-
-	* vm.c (vm_set_main_stack, rb_iseq_eval_main): added.
-
-	* parse.y (rb_parser_compile_file): fix to check parse_in_eval flag.
-
-	* eval.c (ruby_exec_node): use rb_iseq_eval_main()
-	  instead of rb_iseq_eval().
-
-	* iseq.c (rb_iseq_new_main), vm_core.h: added.
-	  main script (specified by -e or script name) should be run
-	  under TOPLEVEL_BINDING using Kernel#eval.  Above changes
-	  simulate Kernel#eval behaviour.  [ruby-dev:37240]
-
-	* compile.c (make_name_for_block): skip iseq except block type.
-	  this fix is needed for [ruby-dev:37240], and also fixes
-	  [ruby-dev:35392].
-
-Sat Dec 27 05:38:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (after_fork): ignores a termination request in the
-	  parent process.  [ruby-dev:37447]
-
-Sat Dec 27 01:52:39 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Using a more robust transcoding scheme to produce
-	  ASCII compatible inspect() messages.  [ruby-dev:37591]
-
-Mon Dec 22 16:32:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): encoding of packed string only from 'm',
-	  'M', and 'u' should be US-ASCII.  [ruby-dev:37284]
-
-	* pack.c (pack_pack): encoding of packed string only from 'U'
-	  should be UTF-8.  also upgrade US-ASCII strings to UTF-8.
-
-Sat Dec 27 09:14:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* cont.c: rdoc for Fiber. patch by Muhammad Ali.
-	  [ruby-core:20894]
-
-Fri Dec 26 18:04:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): don't allocate objects if noraise.
-	  (finish_writeconv): add noalloc argument to be able to avoid
-	  object allocation.
-	  (finish_writeconv_arg): introduced again.
-	  (finish_writeconv_sync): follow the above change.
-
-Mon Dec 22 09:54:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (gettable_gen): the encoding of __FILE__ should be
-	  rb_filesystem_encoding().  [ruby-list:45733]
-
-	* parse.y (gettable_gen): __FILE__ should be ASCII-8BIT when
-	  filesystem encoding is US-ASCII and __FILE__ contains non 7bit
-	  characters.
-
-Fri Dec 26 15:50:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::List#summarize): gives priority
-	  to latter switches.  [ruby-dev:36692]
-
-	* lib/optparse.rb (OptionParser#summarize): do not append
-	  unnecessary line terminator.
-
-Fri Dec 26 14:01:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): close the IO object even if finish_writeconv or
-	  flush is failed.
-	  (finish_writeconv): don't raise.  return errno or exception.
-	  (finish_writeconv_arg): removed.
-	  (finish_writeconv_sync): follow finish_writeconv change.
-
-	* transcode.c (rb_econv_make_exception): new function.
-
-	* include/ruby/encoding.h (rb_econv_make_exception): declared.
-
-Fri Dec 26 17:04:14 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/input-method.rb (IRB::StdioInputMethod#initialize):
-	  removed a 'p' for debugging.
-
-Thu Dec 25 20:57:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (str_transcode0): set encoding when String#encode was
-	  given explicit but the same destination and source encoding.
-
-Thu Dec 25 19:35:51 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (sym_ignore): remove useless symbol.
-
-Mon Dec 22 21:31:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c (int_ord): Integer#ord implemented.
-
-Tue Dec 16 22:15:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/minitest/unit.rb (MiniTest::Assertions#assert_instance_of):
-	  should assert by instance_of?, not ===.  [ruby-dev:37458]
-
-	* lib/minitest/unit.rb (MiniTest::Assertions#assert_instance_of):
-	  typo fixed.
-
-Mon Dec 15 20:59:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (child_info): add slavename.
-	  (chfunc): use slavename.
-	  (establishShell): set slavename.
-	
-Tue Dec  9 13:23:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (check_cfunc): use function pointer.
-
-Thu Nov 27 10:40:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_div2): should return
-	  Integer for #div operation.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_div2): should raise
-	  ZeroDivisionError if divisor is zero.  [ruby-dev:37207]
-
-Mon Nov  3 00:36:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_event.rb: rename test class.
-
-	* test/win32ole/test_win32ole_variant_outarg.rb: add in order
-	  to use ADO instead of Internet Explorer.
-	  remove test/win32ole/test_win32ole_variant_with_ie.rb.
-
-	* test/win32ole/orig_data.csv: ditto.
-
-Sun Nov  2 22:12:41 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_event_free): invoke IConnectionPoint::Unadvise
-	  before invoking IConnectionPoint::Release.
-
-	* test/win32ole/test_win32ole_event.rb, test/win32ole/err_in_callback.rb,
-	  test/win32ole/test_err_in_callback.rb: Use ActiveX Data Object
-	  Library instead of InternetExplorer.
-
-Sun Nov  2 22:06:55 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* win32/Makefile.sub: add RUNRUBYOPT. [ruby-dev:37009]
-
-Thu Dec 25 17:49:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (decorate_convpath): show type of escaping for
-	  xml_attr_quote or some conversions.
-
-Thu Dec 25 17:06:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_initialize): check fd validity.  [ruby-dev:36646]
-
-Thu Dec 25 16:23:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (flush_before_seek): check io_fflush result.
-	  (rb_io_check_readable): ditto.
-	  (rb_io_flush): ditto.
-	  (rb_io_fsync): ditto.
-	  (remain_size): ditto.
-	  (rb_io_write_nonblock): ditto.
-	  (finish_writeconv): ditto.
-	  (fptr_finalize): ditto.
-	  (io_reopen): ditto.
-	  (rb_io_reopen): ditto.
-	  (copy_stream_body): ditto.
-
-Thu Dec 25 15:54:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fflush): flush write buffer without write lock in
-	  finalizers.  [ruby-dev:37572]
-
-	* io.c (rb_io_fptr_finalize): clear write lock before finalizing.
-
-Thu Dec 25 15:07:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): close the IO object even if close(2) is failed.
-
-Thu Dec 25 14:51:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/parser.rb (RDoc::Parser.binary?): should read in binary mode.
-
-Thu Dec 25 13:28:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_flush): fsync() after buffer is flushed on win32.
-	  [ruby-core:20043]
-
-Thu Dec 25 14:32:23 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_method_search): fix control flow bug.
-	  (commited at r20981)
-
-Thu Dec 25 13:13:00 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_method_search): return rb_cObject if there is no
-	  super class.  [ruby-dev:37587]
-
-	* bootstraptest/test_method.rb: add tests for above.
-
-Thu Dec 25 12:49:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_new): should use proc_dup() if block has Proc.
-
-	* vm.c (vm_make_proc_from_block): should use rb_cProc for block.
-
-	* vm.c (vm_make_proc): add an assertion.
-
-	* bootstraptest/test_proc.rb: add a test.
-
-Thu Dec 25 12:44:27 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_yield_with_cfunc): check block has Proc.
-
-Thu Dec 25 05:53:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/id.h.tmpl, id.h (ruby_method_ids): not depend on if
-	  token are defined as macros.  [ruby-dev:37553]
-
-	* template/id.h.tmpl, id.h (ruby_method_ids_check): enclosed in a
-	  struct.
-
-Thu Dec 25 01:52:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): sets native thread key.
-
-Thu Dec 25 01:09:23 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline_history.rb: check the encoding that
-	  is in the Readline::HISTORY.
-
-Wed Dec 24 22:36:06 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* error.c, vm_dump.c: change message by rb_bug().
-
-Wed Dec 24 21:57:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_peephole_optimize): fix typo.
-
-Sun Dec 21 13:38:04 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (invoke_block_from_c): fix to point right cfp.
-
-	* vm.c (vm_make_proc, vm_make_proc_from_block), vm_core.h:
-	  remove unused parameter cfp.
-
-	* vm_insnhelper.c, proc.c (proc_new): ditto.
-
-Wed Dec 24 20:59:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* error.c (exc_equal): == method should not raise Exception.
-	  [ruby-dev:37519]
-
-	* sample/test.rb: fix test
-
-Fri Dec 19 07:45:37 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_equal): duck typing equal to make it transitive.
-	  [ruby-dev:34880]
-
-Wed Dec 24 20:33:45 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_call_method): use class of method defined
-	  instead of receiver's class on bmethod.  fixes [ruby-core:20786]
-
-	* bootstraptest/test_method.rb: add a test for above.
-
-	* vm_insnhelper.c (vm_setup_method): remove unused parameter klass.
-
-	* vm_insnhelper.h (CALL_METHOD): ditto.
-
-	* insns.def, vm_eval.c: ditto.
-
-Wed Dec 24 20:15:50 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/file2lastrev.rb (get_revisions): fix to ignore end of line.
-
-Wed Dec 24 13:33:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (HAVE_LONG_LONG, HAVE_OFF_T): revised for autoconf
-	  2.62 or later.
-
-Wed Dec 24 06:29:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (OBJDUMP, OBJCOPY): autoconf list is not comma
-	  separated.
-
-	* configure.in (AC_HEADER_STDC, AC_CHECK_HEADERS, AC_CHECK_FUNCS):
-	  removed duplicated checks.
-
-Wed Dec 24 03:21:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el: added comment to mention newer version
-	  bundled with Emacs 23 or later.  a patch from Phil Hagelberg
-	  <phil at hagelb.org> in [ruby-core:20838].
-
-Tue Dec 23 23:49:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_init_copy): call io_seek only if io_tell succeeds.
-
-Tue Dec 23 20:28:28 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* io.c: rdoc for File::open and 1.9 feature in file modes.
-
-	* transcode.c: rdoc for String#encode
-
-Tue Dec 23 19:51:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): deals with quoted commands.
-
-Tue Dec 23 18:44:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c (rb_strftime): use locale insensitive functions for tr_TR
-	  locale.
-
-Tue Dec 23 17:38:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_equal): show small differences
-	  for Regexp and Float.
-
-Tue Dec 23 16:49:48 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): support normal commands with arguments.
-
-Tue Dec 23 15:46:43 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/mathn.rb: Math.sqrt(NaN) should be NaN. [ruby-dev:37537]
-
-Tue Dec 23 15:46:47 2008  Eric Hodel  <drbrain@segment7.net>
-	* gem_prelude.rb:  Match full RubyGems behavior when a gem can't be
-	  found.
-
-Tue Dec 23 15:30:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (pipe_open): need to initialize args.
-
-Tue Dec 23 14:18:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/st.h: need to include defines.h because LONG_LONG is
-	  defined there.
-
-Tue Dec 23 13:52:05 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parser/c.rb:  Don't coalesce adjacent comment blocks.
-	  [bug#901]
-
-Tue Dec 23 08:10:05 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/installer.rb: Fix documentation.  [bug#827]
-
-Tue Dec 23 08:04:58 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb: Don't remove methods twice.  [bug#555]
-
-Wed Dec 24 20:15:50 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/file2lastrev.rb (get_revisions): fix to ignore end of line.
-
-Tue Dec 23 15:48:55 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/file2lastrev.rb: shouldn't use single quote in shell's command
-	  line if you want to support Windows.
-
-Tue Dec 23 15:36:58 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/file2lastrev.rb: detects vcs directory properly on
-	  building outside of srcdir. [ruby-dev:37555] [ruby-dev:37561]
-
-Mon Dec 22 19:31:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (revision.h): uses tool/file2lastrev.rb to support
-	  git-svn.
-
-	* version.h: changed version string as
-	  `ruby 1.9.1 (2008-12-22 patchlevel-5000 trunk 20912)
-	  [i386-darwin9.6.0]'.
-
-Mon Dec 22 21:08:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_nothing_raised): increment
-	  assertion count.  [ruby-dev:37480]
-
-Mon Dec 22 19:10:44 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (Init_native_thread): need to call
-	  ruby_thread_set_native() here.
-
-Mon Dec 22 18:00:36 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: fix wrong flag value.
-
-Mon Dec 22 14:35:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new_with_enc): set ASCII-8BIT if
-	  encoding is US-ASCII and string contains 8bit characters.
-
-Mon Dec 22 12:26:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (rubydll.def), win32/mkexports.rb
-	  (Exports#exports): added VERSION.
-
-Tue Dec 23 00:16:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sprintf.c (rb_str_format): fix buffer overflow.
-
-Mon Dec 22 12:25:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): fix for test_sprintf_comb.rb, by
-	  wanabe in [ruby-dev:36935].
-
-Mon Dec 22 12:05:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (mingw): no longer uses snprintf and vsnprintf of
-	  msvcrt.  [Bug#6]
-
-	* win32/win32.c (rb_w32_vsnprintf, rb_w32_snprintf): removed.
-
-	* win32/Makefile.sub (config.h): vsnprintf exists in VC7 or later.
-
-	* win32/mkexports.rb (Exports#initialize): aliases
-	  rb_w32_vsnprintf and rb_w32_snprintf for binary compatibility.
-
-	* sprintf.c (rb_str_format): uses snprintf instead of sprintf.
-
-	* numeric.c (flo_to_s, rb_num2long, rb_num2ll): ditto.
-
-Sat Dec 20 15:34:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rake.rb (Rake::FileList#egrep): change open mode to "rb",
-	  i.e. default to binary.    [ruby-dev:37385]
-
-	* lib/rake.rb (Rake::FileList#egrep): allow specifying reading
-	  encoding, e.g. FileList['*.rb'].egrep(/require/, encoding:
-	  "ascii-8bit")
-
-Mon Dec 22 10:59:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upto): should return enumerator if called
-	  without block.  [ruby-dev:37526]
-
-Thu Dec 25 00:59:06 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline_history.rb: did not check the
-	  encoding that is in the Readline::HISTORY. I will fix it.
-
-Mon Dec 22 02:54:56 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: temporary patch for trouble on TkAqua (> Tk8.4.9).
-
-	* ext/tk/sample/demos-jp/widget: set encoding to a demo-code string to
-	  avoid garbled text on the Code Window.
-
-Sun Dec 21 14:48:51 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline_history.rb: checked encoding.
-
-Sun Dec 21 13:50:37 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline.rb
-	  (TestReadline#test_some_characters_methods): checked encoding.
-
-Sun Dec 21 14:55:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (SPLAT_PROC): splat values by hand.
-
-Sun Dec 21 12:23:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (SPLAT_PROC): fix for regexp.  [ruby-dev:37514]
-
-Mon Dec 22 15:25:03 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* thread.c (Thread#set_trace_func, #add_trace_func): removed.
-	  This is an unsupported feature in 1.9.1 and will be supported 
-	  in 1.9.2. [ruby-core:19581]
-	  (thread_add_trace_func): removes unnecessary function.
-	  (thread_add_trace_func_m): ditto.
-	  (thread_set_trace_func_m): ditto.
-
-Sat Dec 20 18:28:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_1): supplements an extension for executable
-	  files on DOSish platforms.
-
-	* io.c (pipe_open): use rb_w32_aspawn() for array form.
-
-	* win32/win32.c (rb_w32_pipe_exec): no longer used.
-
-	* win32/win32.c (rb_w32_spawn, rb_w32_aspawn): deals with batch
-	  files and commands with extensions.  [ruby-core:20695]
-
-	* win32/win32.c (has_redirection): supports environment variables
-	  references.
-
-Fri Dec  5 01:37:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): ERROR_BROKEN_PIPE is not a real error
-	  at this point.
-
-	* io.c (pipe_open): use rb_w32_spawn() instead of rb_w32_pipe_exec()
-	  to use our own redirection scheme.
-
-	* lib/rake.rb (Rake::MultiTask): invoke_prerequisites should be
-	  private.  a patch from okkez in [ruby-dev:37399]
-
-Sat Dec 20 10:59:16 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/locale.rb (IRB::Locale#initialize)
-	  initializes instance variables to suppress warnings.
-	  typo fix to ignore LoadError: [ruby-dev:37508]
-
-Fri Dec 19 17:01:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_encoding_option): "internal_encoding: nil"
-	  to specify no-transcoding.  and other corner case fixed.
-	  [ruby-dev:37496]
-
-	* hash.c (rb_hash_lookup2): new function to look-up hash with
-	  default value.
-
-Fri Dec 19 15:51:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): get rid of warning on DOSISH.
-
-Thu Dec 18 19:31:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/init.rb (IRB.opt_parse): (M17N) adds -U and -E as command
-	  line options. [ruby-dev:37161]. Fixes #711. 
-	  improved long optinos.
-
-	* lib/irb/init.rb (IRB.set_encoding): new subroutine for IRB.opt_parse
-
-	* lib/irb/input-method.rb (IRB::StdioInputMethod): (M17N) regards
-	  scripts that user types as encoded in the external_encoding. 
-
-	* lib/irb/input-method.rb (IRB::ReadlineInputMethod): ditto.
-
-	* lib/irb/input-method.rb (IRB::FileInputMethod): (M17N) respects
-	  magic comment.
-
-	* lib/irb/help.rb (IRB.print_usage): (M17N) respects magic comment 
-	  in the resource file.
-
-	* lib/irb/lc/help-message: adds -U and -E.
-
-	* lib/irb/lc/ja/help-message: ditto. re-encoded from ISO-2022-JP into UTF-8.
-
-	* lib/irb/lc/ja/encoding_aliases.rb: new file. provides Japanese specific
-	  character encoding name table for backward compatibility.
-
-	* lib/irb/lc/ja/error.rb: re-eoncoded from ISO-2022-JP into UTF-8.
-	  magic comment.
-
-	* lib/irb/locale.rb: integrated with Ruby 1.9's M17N support.
-
-	* lib/irb/magic-file.rb: new file. utility to handle files with magic
-	  comment and opens in the correct encoding.
-
-	* lib/irb/ruby-lex.rb (RubyLex#each_top_level_statement): recovers
-	  character encoding for a statement after it lexed so that irb can
-	  eval the statement in correct encoding.
-
-	* lib/irb/src_encoding.rb: new file. utility.
-
-Thu Dec 18 21:12:28 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb: fix bug for ignore session_id option.
-	  report from [ruby-core:18635], [Bug #572]
-
-	* lib/cgi/core.rb: use Encoding#find when encoding set.
-
-	* test/cgi/test_cgi_session.rb: test for session_id specified.
-
-Thu Dec 18 16:48:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/optparse/version.rb: remove variable shadowing to stop
-	  warning.   [ruby-core:20612]
-
-	* lib/irb/completion.rb, lib/net/imap.rb, lib/prime.rb,
-	  lib/rinda/ring.rb, lib/racc/parser.rb,
-	  lib/shell/command-processor.rb, lib/yaml/yamlnode.rb: ditto.
-
-	* lib/racc/parser.rb: remove space before parentheses.
-
-	* lib/shell/command-processor.rb, lib/shell/process-controller.rb:
-	  use parentheses around arguments.
-
-	* lib/irb/ext/change-ws.rb, lib/rexml/validation/relaxng.rb,
-	  lib/yaml/baseemitter.rb: indentation fix.
-
-	* lib/matrix.rb: small cosmetic change.
-
-Thu Dec 18 08:15:04 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb:  Restricting method inspection to show only
-	  non-inherited public methods.  [ruby-core:20603]
-
-	* lib/xmlrpc/server.rb:  Fixing method inspection so it doesn't 
-	  trigger XMLRPC::FaultException when used.  [ruby-core:20604]
-
-Wed Dec 17 19:39:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (unix_recv_io): relax msg_controllen error
-	  check.
-
-Wed Dec 17 19:37:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/extconf.rb: check util.h for OpenBSD.
-
-	* ext/pty/pty.c: include util.h if available.
-
-Wed Dec 17 19:23:28 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/matrix.rb: shut up warning. [ruby-dev:37481] [Bug #899]
-
-Sat Dec 13 08:35:14 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_canonicalization): renamed.
-
-	* ext/math/complex.c: followed the above change.
-
-	* rational.c (nurat_canonicalization): renamed.
-
-	* ext/math/rational.c: followed the above change.
-
-	* configure.in: defines a new macro.
-
-Wed Dec 17 15:44:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_pop_m): use enum ary_take_pos_flags.
-
-	* array.c (rb_ary_push_m): add modification check before actual
-	  operation.   [ruby-dev:37440]
-
-Wed Dec 17 15:35:39 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (OBJDUMP, OBJCOPY): 
-	  Also BSD's ports prefixes GNU binutils with 'g'.
-
-Wed Dec 17 11:39:39 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/bigdecimal/test_bigdecimal.rb (TestBigDecimal#test_hash):
-	  shut up warning.  see [ruby-dev:37437]
-
-Wed Dec 17 11:01:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_hash): gets rid of collisions between differen
-	  encoding strings.  [ruby-core:20526]
-
-Tue Dec 16 22:55:11 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bin/testrb: set $0.
-
-Tue Dec 16 21:59:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpToString): reverted modification
-	  (that caused a bug) in r20359.  [ruby-dev:37370]
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_limit): comment update.
-	  [ruby-dev:37465]
-
-Tue Dec 16 22:42:16 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): sorry, fixed wrong commit.
-
-Tue Dec 16 21:59:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): ALT_SEPARATOR support.
-
-Tue Dec 16 20:24:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_parse): m17n compliant.
-
-Tue Dec 16 19:43:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c: use strlcpy for error messages.
-
-Tue Dec 16 16:41:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): returns dispatched result.
-
-	* parse.y (primary): also in ripper, saves in_def before restoring.
-
-Tue Dec 16 12:30:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_cv_header_ucontext_h): do not use ucontext.h on Mac
-	  OS X 10.5 or later.  merged from MacPorts.
-
-	* configure.in (ac_cv_func_daemon): daemon(3) is deprecated on Mac OS
-	  X 10.5 or later.
-
-Tue Dec 16 11:37:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (set_arg0): use strlcpy() instead of strncpy().
-
-	* load.c (rb_feature_p): ditto.
-
-	* dln.c (dln_load): ditto.
-
-Tue Dec 16 09:14:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (block_call): block should not be given to yield.
-	  [ruby-core:20583]
-
-Mon Dec 15 23:48:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (sleep_timeval): cast tv_usec to long to shut up
-	  warnings on OSX.  [ruby-dev:37449]
-
-Mon Dec 15 23:29:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (process_options): revive global sub, gsub, chop, chomp
-	  only when auto looping options (-p/-n) is specified.
-	  [ruby-core:20570]
-
-Mon Dec 15 21:01:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (chfunc): make it static.
-
-Mon Dec 15 20:16:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (EXTMK_ARGS): shouldn't use ``\"'' because cmd.exe eat
-	  ''\'' in such quotes.
-
-Mon Dec 15 19:07:31 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): define CANONICALIZATION_FOR_MATHN
-	  to follow r20683.
-
-Mon Dec 15 18:12:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rake/packagetask.rb (Rake::PackageTask): small document
-	  update from okkez in [ruby-dev:37443]
-
-Mon Dec 15 16:26:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_callee_setup_arg_complex): uses cfp from
-	  blockptr instead of the current cfp.  [ruby-core:20544]
-
-Wed Dec 17 09:50:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_metaclass.rb: removed codes for my debugging.
-	  sorry. [ruby-dev:37470]
-
-Mon Dec 15 14:56:59 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_metaclass.rb: new test case for metaclass hierarchy.
-
-	* class.c (make_metametaclass): new function. extracted from
-	  rb_make_metaclass.
-
-	* class.c (rb_make_metaclass): uses make_metametaclass when called for a
-	  metaclass.
-
-	* class.c (rb_singleton_class): creates a meta^(n+2)-class in
-	  addition to a meta^(n+1)-class when called for a meta^(n)-class.
-	  This is because the returned meta^(n+1) class must acts as an instance of 
-	  Class, metaclass of Class, ..., meta^(n+1)-class of Class,
-	  Module, metaclass of Module, ..., meta^(n+1)-class of Module,
-	  Object, metaclass of Object, ..., meta^(n+2)-class of Object,
-	  BasicObject, metaclass of BasicObject, ..., meta^(n+2)-class of
-	  and BasicObject even when Class, Module, Object or BasicObject has
-	  not have its meta^(i)-class yet. 
-
-Mon Dec 15 15:13:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* id.h, template/id.h.tmpl (ruby_method_ids): sees YYTOKENTYPE too.
-	  [ruby-dev:37436]
-
-Mon Dec 15 15:02:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (EXTMK_ARGS): needs MINIRUBY for cross-compile.
-	  [ruby-core:20131]
-
-Mon Dec 15 14:39:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (vm_call0): NODE_ZSUPER supported.  [ruby-core:20480]
-
-	* vm_eval.c (vm_call_super): uses method_missing().
-
-	* vm_eval.c (method_missing): get rid of too large alloca.
-
-	* vm_eval.c (rb_call0, method_missing): uses idMethodMissing.
-
-	* vm_method.c (rb_add_method, remove_method, rb_undef): uses
-	  id__send__.
-
-	* vm_method.c (Init_eval_method): removed IDs which are defined as
-	  immediate values.
-
-Mon Dec 15 11:35:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace): defaults to script name for C functions.
-
-Mon Dec 15 11:32:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (rubylib_mangled_path, rubylib_mangled_path2): cannot use
-	  locale encoding before load path is initialized
-
-	* ruby.c (ruby_init_loadpath_safe): ditto.
-
-	* ruby.c (process_options): loads encdb so that encodings can be
-	  loaded, then associates script name and load paths with the
-	  locale encoding.
-
-Sun Dec 14 14:26:11 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/README: directory structrue changed
-
-Sun Dec 14 01:35:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (forked_child): new variable.
-	  (before_exec): don't call rb_thread_stop_timer_thread if
-	  forked_child.
-	  (after_exec): reset forked_child after rb_thread_start_timer_thread.
-	  (rb_fork): set forked_child just after fork in child.
-
-	* ext/pty/pty.c (chfunc): extracted from establishShell.
-	  (establishShell): use rb_fork.
-
-	  [ruby-dev:37418]
-
-Sat Dec 13 18:34:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_printable): wrong condition for string iteration.
-
-Sat Dec 13 15:52:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_equal): remove documentation error "Otherwise,
-	  compares them as strings".  [ruby-dev:37398]
-
-Sat Dec 13 15:55:37 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ruby.c (process_options): fixed default_internal is nil.
-	  (closes #862)
-
-Sat Dec 13 13:03:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: use rb_usascii_str_new2 instead of rb_str_new2.
-
-	* rational.c: ditto.
-
-Fri Dec 12 22:12:46 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c, rational.c: do not use RUBY_VERSION_CODE.
-
-Fri Dec 12 10:20:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c, rational.c: do not use RUBY_VERSION_CODE.
-
-Tue Dec 16 12:41:52 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (OBJDUMP, OBJCOPY): 
-	  (darwin) MacPorts prefixes GNU binutils with 'g'.
-
-Sun Dec  7 23:17:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (LIBRUBY_SO): localizes non-public symbols.
-
-	* configure.in (OBJDUMP, OBJCOPY): for dealing with binary files.
-
-Mon Dec 15 10:00:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (btest-ruby): use RUNRUBY instead of MINIRUBY to load the
-	  shared library.  [Bug #849]
-
-Sun Dec 14 09:14:37 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* reverts r20713.
-
-Sat Dec 13 22:17:30 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (help): describes more targets.
-	  based on a patch by Michael Klishin. [ruby-core:20523].
-
-Sat Dec 13 16:04:48 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* encoding.c (default_external): endless recursion during
-	  loading a locale encoding on some locale.
-	  fixed by Nobuyoshi Nakada.
-
-	* string.c (sym_inspect): quote if symbol contains non-printable
-	  characters.  [ruby-dev:37398]
-
-Sat Dec 13 14:24:38 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/enc/test_utf16.rb: feature changed in r20626.
-	  follows it.
-
-Sat Dec 13 13:41:44 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_m17n_comb.rb: feature changed in r20626.
-	  follows it.
-
-Sat Dec 13 12:48:57 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_m17n.rb: feature changed in r20626.
-	  follows it.
-
-Sat Dec 13 12:38:16 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/minitest/test.rb (MinTest::Unit#location): 
-	  skips user-defined assertions as MiniTest's.
-	  e.g. for test/ruby/test_m17n.rb.
-
-Wed Dec 10 12:56:32 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_rewind): If the enclosed object
-	  responds to a "rewind" method, call it; cf. [ruby-dev:37268]
-
-Sat Dec 13 09:17:33 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.3.1 r4503.
-	* test/minitest/test_mini_test.rb: ditto.
-	* lib/miniunit/autorun.rb: added (as part of r4503).
-	
-Sat Dec 13 01:10:03 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c
-	  (readline_s_get_completion_append_character): uses locale
-	  encoding but not ASCII-8BIT.
-
-Fri Dec 12 19:24:47 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (run, runruby, parse, gdb, gdb-ruby): you can also run
-	  other scripts than $(srcdir)/test.rb.
-
-Fri Dec 12 19:13:43 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c (readline_readline): changed the message
-	  of IOError to 'closed stdin' from 'stdin closed' if stdin was
-	  closed.
-
-Fri Dec 12 11:00:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_feature_p): load path must be expanded.
-	  [ruby-dev:37388]
-
-Fri Dec 12 10:19:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_string_value_ptr, rb_to_id): do not use a side
-	  effect expression in RSTRING_PTR.
-
-	* string.c (rb_str_split_m): simplified the argument of
-	  RSTRING_LEN.
-
-Thu Dec 11 23:48:00 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (sqrt): should pass nan to the original method.
-
-Thu Dec 11 19:31:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb: extracted from lib/test/unit.rb.
-	  lib/test/unit/testcase.rb: ditto.
-	  at asakusa.rb.  [ruby-core:20014]
-
-Thu Dec 11 19:23:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io.rb (test_dup_many): extracted from test_dup.
-	  test in ruby subprocess.  at asakusa.rb.  [ruby-dev:35648]
-
-Thu Dec 11 19:16:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#=~): undefed.  at asakusa.rb.
-	  [ruby-core:19690]
-
-Thu Dec 11 13:09:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (reg_enc_error): raise EncodingCompatibilityError for
-	  encoding incompatibility.  [ruby-core:18600]
-
-	* re.c (rb_reg_prepare_enc): more consistent error message.
-	  [ruby-core:18611]
-
-Fri Dec 12 19:29:07 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* encoding.c (rb_enc_set_default_external): default_internal can be
-	  nil, but default_external cannot.
-
-	* encoding.c (rb_set_default_internal): adds rdoc.
-
-	* encoding.c (enc_find): ditto.
-
-Fri Dec 12 14:09:55 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* encoding.c (enc_get_default_encoding): removed.
-	  Generalizing rb_default_{external,internal}_encoding seems to be
-	  difficult. 
-	  default_external cannot be NULL even before detected. [ruby-dev:37390]
-
-	* encoding.c (rb_default_external_encoding): has its own
-	  implementation again.
-
-	* encoding.c (rb_default_internal_encoding): ditto.
-
-	* gem_prelude.rb: added notice.
-
-	* ruby.c (rubylib_mangled_path, rubylib_mangled_path2): uses locale
-	  encoding but not ASCII-8BIT.
-
-	* ruby.c (process_options): refers less to default_external.
-
-Thu Dec 11 20:05:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_aliases_enc_i): skips default internal.
-
-Thu Dec 11 13:36:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_set_default_encoding): allowed to set default
-	  encoding.
-
-	* encoding.c (rb_locale_encoding): removed Encoding::LOCALE.
-
-	* encoding.c (rb_enc_set_default_external): ditto.
-
-	* encoding.c (rb_enc_set_default_internal): ditto.
-
-	* encoding.c (rb_enc_set_default_internal): defines internal
-	  encoding as nil.
-
-Thu Dec 11 10:25:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_bignum.rb (TestBignum#test_convert): remove
-	  platform dependent call of Process.wait.  coverage should be
-	  accomplished by other method.  [ruby-dev:36062]
-
-Thu Dec 11 10:18:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/document.rb (REXML::Document#write): require
-	  rexml/formatters/transitive if transitive flag is on.  a patch
-	  from akira yamada in [ruby-dev:36230].  fix #553
-
-	* lib/rexml/element.rb (REXML::Element#write): ditto.
-
-	* lib/rexml/formatters/transitive.rb (REXML::Formatters::Transitive#write_element): 
-	  add hack for IE.  [ruby-dev:36230]
-
-Thu Dec 11 02:37:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (domain_check): should not raise EDOM exception for NaN
-	  value if operand is also NaN.  affects acos, asin, acosh, atanh,
-	  log, log2, log10, sqrt, gamma, lgamma. [ruby-dev:37357]
-
-Thu Dec 11 01:21:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_mutex_unlock): shut up warning.  a patch from
-	  Kazuhiro NISHIYAMA in [ruby-dev:37345]. fix #846
-
-Wed Dec 10 23:58:56 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: avoided warnings on cpp. [ruby-dev:37344]
-
-	* rational.c: ditto.
-
-Wed Dec 10 12:46:52 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_next): Fix a typo: s/rewinded/rewound/.
-
-	* lib/prime.rb (Prime::OldCompatibility#each): Ditto.
-
-Wed Dec 10 11:25:53 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): raise RegexpError when encoding
-	  is dummy encoding. [ruby-dev:37091]
-
-Tue Dec  9 18:35:35 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans, cp850-tbl.rb, cp852-tbl.rb,
-	  cp855-tbl.rb, koi8-r-tbl.rb, koi8-u-tbl.rb, tis-620-tbl.rb:
-	  new single-byte transcodings (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi), small cosmetic fixes
-
-Tue Dec  9 13:33:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each), gc.c (assign_heap_slot),
-	  (gc_mark_children), parse.y (vtable_alloc, vtable_free, vtable_add),
-	  proc.c (proc_to_s), thread.c (terminate_i, rb_thread_terminate_all),
-	  (thread_start_func_2, blocking_region_begin, blocking_region_end),
-	  (rb_thread_kill), thread_pthread.c (native_thread_create),
-	  (ubf_pthread_cond_signal), vm.c (check_env, thread_free), vm_dump.c
-	  (vm_env_dump_raw, vm_stack_dump_each, vm_thread_dump_state),
-	  (vm_call0): use void pointer for %p.
-
-	* cont.c (fiber_status), template/insns.inc.tmpl (ruby_vminsn_type),
-	  vm_insnhelper.h (BOP): ISO C forbids comma at end of enumerator
-	  list.
-
-	* vm_insnhelper.c (check_cfunc): use function pointer.
-
-Tue Dec  9 12:08:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .gdbinit (rp): fixed typo for T_STRUCT.
-
-Tue Dec  9 03:21:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: fix for continued lines.  based on a patch from
-	  Marcus Rueckert <darix AT opensu.se> at [ruby-core:20420].
-
-Fri Dec  5 22:56:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_make_exception): single argument to raise may be
-	  string compatible object.
-
-Tue Dec  9 00:54:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): enc.mk in snapshot is dummy and should
-	  not deal with objects.  [ruby-core:20422]
-
-Tue Dec  9 00:17:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (clean-srcs): split out from clean.
-
-Mon Dec  8 23:34:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* pack.c (pack_pack): fixed odd act of 'm*', 'M*', and 'P*'.
-	  just ignores '*' in these cases.
-	  [ruby-dev:37289]
-
-Mon Dec  8 18:31:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_pack): fixed length for odd length string.
-	  [ruby-dev:37283]
-
-Mon Dec  8 10:32:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_option_encoding_once): dry.
-
-	* ruby.c (proc_options): checks extra argument for -E/--encoding.
-
-Sun Dec  7 23:47:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBPATHFLAG): use numbered specifier if RPATHFLAG
-	  is set.  [ruby-talk:322136]
-
-Sat Dec  6 17:51:35 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* pack.c (pack_pack): 'u0' is not special differently from 'm0'.
-
-Tue Dec  9 11:50:46 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* pack.c (pack_pck): fixed [ruby-dev:37295]. 
-	  Array#pack always has returned an US-ASCII string when
-	  the given format ended with 'u', 'M' or 'm'.
-
-Sat Dec  6 14:35:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* pack.c (pack_pack): set US-ASCII and CODERANGE_7BIT
-	  when quoted-printable ('M') and base64 ('m').
-	  [ruby-dev:37284]
-
-	* pack.c (pack_unpack): ditto.
-
-Thu Dec 11 11:51:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_locale_encoding): removed Encoding::LOCALE.
-
-	* encoding.c (rb_enc_set_default_external): ditto.
-
-	* encoding.c (rb_enc_set_default_internal): ditto.
-
-Thu Dec 11 11:11:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/st.h (size_t): needs stddef.h or stdlib.h.
-	  [ruby-core:20339]
-
-Wed Dec 10 01:28:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (win32.obj): depend on headers.
-
-Sat Dec  6 18:33:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): added RM and CP.  [ruby-dev:37288]
-
-Fri Dec  5 21:45:45 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_{to_s,inspect}): performance improvement.
-
-Fri Dec  5 21:42:44 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: inpsect should not depend on to_s.
-
-Fri Dec  5 12:38:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_set_sequence): uses rb_compile_warning() for
-	  warning at compilation time.
-
-Fri Dec  5 12:35:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (ruby_iseq_compile, ruby_iseq_translate_threaded_code),
-	  (ruby_insns_name_array, ruby_iseq_build_from_ary): prefixed with
-	  ruby_.
-
-	* iseq.c (ruby_iseq_load, ruby_insn_make_insn_table): ditto.
-
-Fri Dec  5 10:01:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_cmp_m): fixed rdoc.  pointed out by <Thomas
-	  C. Mitchell AT gmail.com> at [ruby-talk:321967]
-
-Fri Dec  5 07:58:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): arg.offset should be updated after retry.
-
-Fri Dec  5 03:29:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_get_load_path): returns the load path without
-	  touching.
-
-	* load.c (rb_feature_provided): new function to return the loading
-	  path in addition to rb_provided().
-
-	* load.c (search_required): sets path if loading.
-
-	* variable.c (autoload_provided): load paths are expanded to check
-	  if loading.
-
-	* variable.c (autoload_node): keeps autoload mark while loading.
-	  [ruby-core:20235]
-
-	* variable.c (rb_const_get_0): loops while autoload mark is set.
-
-Fri Dec  5 01:19:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): propagate taint status from format string to
-	  result string.
-
-Thu Dec  4 23:02:13 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec: follows changes in rubyspec project.
-	  inherits configurations from ruby.1.9.mspec.
-
-Thu Dec  4 22:13:55 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_complex.rb: added some tests.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Fri Dec  5 18:13:56 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read, rb_w32_write, rb_w32_isatty): check
-	  whether fd is valid.
-
-Thu Dec  4 23:31:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (waitpid): fix bug of checking child slot.
-
-	* win32/win32.c (FindChildSlotByHandle): new.
-
-Thu Dec  4 16:58:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rubygems/validator.rb (Gem#remove_leading_dot_dir): make
-	  this method private.  a patch from okkez in [ruby-dev:37245]
-
-Thu Dec  4 16:16:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/gserver.rb: fixed type in sample code.  a report from Oleg
-	  Puchinin.
-
-Thu Dec  4 14:54:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rubygems/local_remote_options.rb (Gem#add_update_sources_option): 
-	  little documentation fix.  a patch from okkez.  [ruby-dev:37271]
-
-Thu Dec  4 13:56:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c (window_getch): avoid ISPRINT() macro which
-	  has an issue with OpenSolaris.  [ruby-core:20189]
-
-	* ext/curses/curses.c (curses_getch): no ISPRINT(). [ruby-core:20294]
-
-	* signal.c (ruby_signal): EINVAL from sigaction(2) is not a bug.
-
-Thu Dec  4 11:38:40 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* vm_method.c (rb_obj_respond_to): Remove a duplicated rdoc
-	  comment and fix a markup error.
-
-Thu Dec  4 06:04:16 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/menu.rb: TkOptionMenubutton.new fails to treat 
-	  'parent' and 'variable' options on a Hash argument.
-
-Thu Dec  4 05:06:47 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix. use ::RubyVM instead of ::VM 
-	  [ruby-list:45676]
-
-	* ext/tk/tcltklib.c: update RELEASE_DATE
-
-Thu Dec  4 01:37:47 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nurat_{to_s,inspect}): provides better representation
-	  for in-finite imag part.
-
-Thu Dec  4 01:22:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (f_signbit): NaN may be signed value.
-
-Wed Dec  3 22:54:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (expr): keyword_not can continue across newline.
-	  [ruby-core:20252]
-
-Wed Dec  3 14:48:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/tcltklib.c (ip_ruby_cmd, ip_invoke_with_position): must
-	  not access internal union directly.  [ruby-list:45670]
-
-Wed Dec  3 12:24:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getc, rb_io_readchar): documentation correction from
-	  Emiel van de Laar.  [ruby-core:20212]
-
-	* ext/stringio/stringio.c (strio_readchar): ditto.
-
-Wed Dec  3 09:26:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/xpath.rb (REXML::XPath.first): apply documentation
-	  patch from Ken Bloom in [ruby-core:20213].
-
-	* lib/rexml/xpath.rb (REXML::XPath.each): ditto.
-
-Wed Dec  3 02:53:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_range.rb: add a test.
-
-Wed Dec  3 02:26:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_string.rb: add some tests.
-
-Mon Dec  1 12:00:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (rb_fiber_start): calls with exact argument number.
-	  [ruby-core:20088]
-
-Mon Dec  1 16:06:15 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): no need to define on non-sigaltstack
-	  platform.
-
-Sun Nov 30 21:41:10 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/rake.1: new manual page
-
-Sat Nov 29 23:56:44 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/irb.1 (EXAMPLES): new section
-
-Sat Nov 29 19:19:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regparse.c (is_invalid_quantifier_target): Perl and old Ruby
-	  accepts quantifier on anchors.  [ruby-core:20161]
-
-Sat Nov 29 00:18:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* cont.c (fiber_alloc): separate allocation and initialization.
-	  allow subclass to override #initialize.   [ruby-core:20086]
-
-Fri Nov 28 18:31:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getaddrinfo): refactored to remove
-	  code duplication regarding getaddrinfo.
-
-	* ext/socket/socket.c (sock_getaddrinfo): should have updated for
-	  Mac OS X.  a patch from Shumpei Akai in [ruby-dev:37234]
-
-Thu Nov 27 21:41:29 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* strftime.c (rb_strftime): should add padding for %%.
-
-Thu Nov 27 16:32:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): stores alt stack for debug
-	  purpose.
-
-Thu Nov 27 16:12:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (ruby_sigaction_t): added.
-
-Thu Nov 27 15:59:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (ruby_stack_check): no check if using sigaltstack.
-
-	* signal.c (ALT_STACK_SIZE): default minimum size is insufficient
-	  for method calls.
-
-	* signal.c (sigsegv): handles stack overflow if possible.
-
-	* thread.c (ruby_thread_stack_overflow): helper function to raise
-	  sysstack_error.
-
-	* thread_pthread.c (ruby_stack_overflowed_p): checks for stack
-	  overflow.
-
-Wed Nov 26 23:15:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (STRFTIME): use rb_strftime() recursively, instead of
-	  platform's strftime().
-
-Wed Nov 26 22:46:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpException): bigdecimal zero
-	  division should raise FloatDomainError if mode
-	  VP_EXCEPTION_ZERODIVIDE is set.  [ruby-dev:37204]
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_mode): should handle
-	  VP_EXCEPTION_ZERODIVIDE.
-
-Wed Nov 26 15:16:07 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/gdbm/gdbm.c (rb_gdbm_nextkey): fix memory leak.
-
-Wed Nov 26 03:17:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_r): raise exception
-	  for nan/inf conversion.  [ruby-dev:37187] fix #793
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_i): ditto.
-
-Wed Nov 26 03:00:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpAlloc): avoid ALLOCA_N() to avoid
-	  segmentation fault caused by (insanely) long decimal values.
-	  [ruby-dev:37189] fix #794
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_dump, BigDecimal_to_i,
-	  BigDecimal_to_f, BigDecimal_to_s, BigDecimal_split,
-	  BigDecimal_inspect): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (VpToString): small performance
-	  improvement.
-
-Wed Nov 26 00:26:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (STRFTIME): should add padding for %[xXrR] etc.
-	  [ruby-dev:37185] fix: #792
-
-Tue Nov 25 16:26:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_times): taint (and untrust) status should be
-	  inherited by "ary * 0".  [ruby-dev:37024]
-
-Tue Nov 25 15:54:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (rb_strftime): should not swallow incomplete
-	  formatter, e.g. "%E".  [ruby-dev:37170] fix: #787
-
-	* strftime.c (rb_strftime): clear flags before processing unknown
-	  formatter, e.g. "%i".  [ruby-dev:37180]
-
-Tue Nov 25 10:35:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (rb_strftime): "%^P" should convert to upper case.
-	  [ruby-dev:37180]
-
-Tue Nov 25 07:51:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (FMT): use "%0d" formatter for zero padding, not "%.d".
-	  [ruby-dev:37168]  fix: #768
-
-	* strftime.c (rb_strftime): %s to use zero padding by default.
-	  [ruby-dev:37180]
-
-Tue Nov 25 03:37:42 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/blt/tabset.rb, 
-	  ext/tk/lib/tkextlib/blt/tabnotebook.rb: 
-	  fix many bugs. Now, those work properly.
-
-Tue Nov 25 03:26:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_step): treat infinite step specially.
-	  [ruby-dev:37157] fix: #781.
-
-Tue Nov 25 01:23:25 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (strftime): ignores '_' flag for %[LN].
-
-Sat Nov 29 00:27:33 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* thread.c, thread_pthread.c, thread_win32.c: merges nobu's commits - 
-	  r20117, r20123, r20124, r20127, r20132-r20134, r20138, r20140, r20141 
-	  and r20160 - from trunk into ruby_1_9_1.
-
-	* thread_pthread.c (thread_timer): checks working flags again.
-
-	* thread_pthread.c (rb_thread_create_timer_thread): do not wait never
-	  coming signal if failed to create tiemr thread.
-
-	* thread_pthread.c (native_cond_timedwait): returns error code.
-
-	* thread_pthread.c (thread_timer, rb_thread_create_timer_thread):
-	  handshakes properly.
-
-	* thread_pthread.c (thread_timer): initializes mutex each time.
-
-	* thread_win32.c (thread_start_func_1): use already gotten stack info.
-
-	* thread.c (thread_timer): pthread_cond_timedwait returns ETIMEDOUT
-	  when timed out.
-
-	* thread_pthread.c (thread_timer): uses pthread_cond_timedwait always
-	  instead of pthread_kill.
-
-	* thread.c (thread_timer): uses timedwait on cygwin.
-
-	* thread.c (rb_thread_stop_timer_thread): terminates timer thread
-	  immediately.
-
-Tue Nov 25 00:08:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_fork): stops the timer thread during fork.
-	  [ruby-dev:37117]
-
-	* thread.c (rb_thread_start_timer_thread): timer thread needs
-	  system_working to be set.
-
-Mon Nov 24 23:27:28 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): The # flag should work with %a, %A, %b,
-	  %B, and %h.  [ruby-dev:37162]
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Mon Nov 24 23:16:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): should not add external
-	  variable (with some cosmetic changes).  [ruby-dev:37158]
-
-Mon Nov 24 22:57:25 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): A width specifier for %t and %n should
-	  work.  [ruby-dev:37160]
-
-Mon Nov 24 22:07:07 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): The precision of %0N should be 9.
-	  [ruby-dev:37156]
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Mon Nov 24 21:38:23 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): The default precision should be 1, not
-	  0.  [ruby-dev:37155]
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Mon Nov 24 18:35:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/time.rb: r20251 reverted.  The patched behavior do not round
-	  trip.  [ruby-core:19988]
-
-Sun Nov 23 16:04:05 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* signal.c (default_handler, Init_signal): compile error if
-	  USE_SIGALTSTACK is not defined.
-
-Sun Nov 23 13:39:49 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/pty/pty.c: reverts 20326. [ruby-dev:37146].
-
-Sat Nov 22 23:59:06 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/time.rb: reverts r20305. [ruby-dev:37144].
-
-Sat Nov 22 18:24:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_world_writable_p): should return nil for non
-	  world-writable files.
-
-Sat Nov 22 10:31:25 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/blt.rb, ext/tk/lib/tkextlib/blt/vector.rb: 
-	  fix NameError bug.
-
-Sat Nov 22 03:41:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/pty/pty.c (get_device_once): abandon asynchronous exception
-	  that might cause serious problem if a program terminated early.
-	  asynchronous exception is a very bad thing anyway.  use
-	  Process.waitpid(pid) or PTY.check(pid) to poll program
-	  termination. if PTY.check is called with optional second
-	  argument being true, it raises an exception same as one from
-	  previous behavior.  [incompatible] fix: [ruby-core:19583]
-
-Fri Nov 21 22:17:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (usage): -W description updated.  [ruby-core:19858]
-
-Sat Nov 22 23:03:47 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* signal.c (ALT_STACK_SIZE): 4KB is not enough on Mac OS X.
-	  Uses SIGSTKSZ.
-
-Fri Nov 21 21:50:54 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): use alternative stack for
-	  SIGSEGV to avoid uncaught stack overflow. based on a patch from
-	  Hiro Yoshioka <hyoshiok at miraclelinux.com> in [ruby-dev:37134].
-	  [ruby-dev:36993]
-
-Fri Nov 21 16:06:54 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm.c (thread_free): th->vm may be NULL when pthread_create
-	  failed for ENOMEM.  [ruby-dev:37095]
-
-Thu Nov 20 07:33:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/logger.rb (Logger): should handle the case that cvs/svn do
-	  not expand $Id keyword.  [ruby-core:19991]
-
-Thu Nov 20 07:27:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/minitest/unit.rb (MiniTest::Assertions#capture_io): adjust
-	  indentation to shut up warning.  [ruby-core:19993]
-
-Wed Nov 19 17:48:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (rb_syck_mktime): return DateTime for a value
-	  out of range of Time.   [ruby-core:19919]
-
-Sat Nov 22 21:29:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_method.rb (test_default_accessiblity): test case for
-	  [ruby-dev:37124].
-
-Wed Nov 19 14:14:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* node.h (NOEX_MODFUNC): should be include NOEX_PRIVATE. 
-	  [ruby-dev:37124]
-
-Wed Nov 19 03:01:04 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb: fixed fails occasionally [ruby-dev:37119].
-	  thanks, shinichiro.h.
-
-Wed Nov 19 02:39:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (Init_syserr): moved function definition itself from
-	  template/known_errors.inc.tmpl.
-
-Wed Nov 19 01:10:52 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (DRbConn::alive?): fixed NoMethodError problem
-	  from NaHi [ruby-dev:37110].
-
-Wed Nov 19 01:05:26 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (cont_mark, cont_capture, cont_restore_1): speed up
-	  continuation by copying only valid YARV stack.  [ruby-dev:37106]
-
-Wed Nov 19 00:03:13 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/time.rb: according to RFC2822, -0000 means local time, +0000
-	  means UTC.  a patch from Chun Wang.   [ruby-core:19578]
-
-Tue Nov 18 23:02:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (proc_eq): equivalence check should not done by pointer
-	  comparison, but should be based on iseq contents.   [ruby-dev:37101]
-
-Tue Nov 18 20:30:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/ftp.rb (Net::FTP#open_socket): SOCKSsocket is obsolete.
-	  a patch from Alan Johnson <alan.wayne.johnson at gmail.com> in
-	  [ruby-core:19982].
-
-Tue Nov 18 16:18:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/logger.rb (ProgName): fixed for svn, based on a patch from
-	  Nobuhiro IMAI at [ruby-dev:37108].
-
-Tue Nov 18 15:56:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest#read_request_line): 
-	  use possessive match for path retrieval to avoid huge recursion
-	  for insanely long path.
-
-Tue Nov 18 15:50:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_desc): re might be NULL.
-
-	* regerror.c (onig_error_code_to_format): message updated.
-
-Tue Nov 18 09:42:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::make_switch): makes default
-	  conversion to splat.  [ruby-list:45645]
-
-Mon Nov 17 18:05:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (LIBS): fixed for disable-shared.  [ruby-dev:37103]
-
-Mon Nov 17 11:12:24 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* bin/erb: remove -K option.
-
-Mon Nov 17 02:19:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBYARG_STATIC): fixed for --enable-rpath.
-
-Sat Nov 15 22:46:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): returns -1 unless ascii as well as
-	  rb_enc_ascget().  [ruby-dev:37097]
-
-Sat Nov 15 22:23:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LDSHARED): do not suppress debug info if higher debug
-	  level is given, on cygwin and mingw.
-
-Thu Nov 13 11:31:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_barrier_wait): gets rid of recursive deadlock.
-
-Thu Nov 13 06:08:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_barrier_{new,wait,release,destroy}): use Mutex so that
-	  circular requires fail with deadlock.  [ruby-core:19821]
-
-Wed Nov 12 07:16:01 2008  David Flanagan  <david@think32>
-
-	* ruby.c (set_internal_encoding_once): fix typo in error string
-
-Wed Nov 12 03:30:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_{external,locale}_str_new_cstr): optimized
-	  versions for literal strings.
-
-Wed Nov 12 03:28:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_require_safe): destroys barrier after successfully
-	  loaded, to get rid of loading same library again.  [ruby-core:19798]
-
-	* thread.c (rb_barrier_wait): can not wait destroyed barrier.
-
-	* thread.c (rb_barrier_destroy): destroys barrier so that no longer
-	  waited.
-
-Tue Nov 11 21:22:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic#check_path): REL_PATH should a
-	  symbol.  [ruby-core:19805]
-
-Tue Nov 11 23:02:27 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/ruby.1 (RUBYOPT): wrote which option can appear.
-	  (--yydebug): wrote "do not use".
-	  (--dump): wrote "do not use".
-
-Tue Nov 11 20:49:29 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* configure.in: fix SEGV on Mac OS X 10.5.3 with pthread.
-	  a patch from Wataru Kimura in Bug #193 [ruby-core:17333].
-
-Tue Nov 11 23:24:23 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ruby.c: merges r20053 and r20067 from trunk into ruby_1_9_1.
-
-	* ruby.c (moreswitches): splits option string and passes arguments.
-
-	* ruby.c (proc_options): checks if allowed in RUBYOPT.
-
-	* ruby.c (process_options): allows long style options in RUBYOPT.
-
-	* ruby.c (load_file_internal): ditto in shebang.  [ruby-dev:36979]
-
-	* ruby.c (process_options): delays setting safe level.
-	  [ruby-dev:36997]
-
-Tue Nov 11 23:36:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_accept): commit miss.
-
-Tue Nov 11 23:02:27 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/ruby.1 (RUBYOPT): wrote which option can appear.
-	  (--yydebug): wrote "do not use".
-	  (--dump): wrote "do not use".
-
-Tue Nov 11 14:40:40 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: unnecessary setup method
-	  (setup_really_needed?) removed
-
-Tue Nov 11 14:25:25 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans, macgreek-tbl.rb, macroman-tbl.rb,
-	  macromania-tbl.rb, macturkish-tbl.rb, macukraine-tbl.rb,
-	  ibm437-tbl.rb, ibm852-tbl.rb, ibm855-tbl.rb, ibm857-tbl.rb,
-	  ibm860-tbl.rb, ibm861-tbl.rb, ibm862-tbl.rb, ibm863-tbl.rb,
-	  ibm865-tbl.rb, ibm866-tbl.rb, ibm869-tbl.rb, ibm775-tbl.rb:
-	  new single-byte transcodings (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Tue Nov 11 13:20:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_r): moved from
-	  bigdecimal/util, converted into C.  [ruby-dev:36805]
-
-Tue Nov 11 07:55:57 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (inspect): changed the format.
-
-Mon Nov 10 17:34:50 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/sdbm/test_sdbm.rb (TestSDBM#test_index): Reflect the method
-	  name change from #index to #key and remove a duplicated test
-	  method.
-
-Mon Nov 10 10:50:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator.delegating_block): should not refer
-	  DelegateClass specific @delegate_dc_obj.  a patch from Erik
-	  Hollensbe in [ruby-core:19671].
-
-Sun Nov  9 13:04:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_initialize_m): avoid unnecessary array
-	  allocation.
-
-Sun Nov  9 04:10:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (control_frame_dump): suppresses finished method name.
-
-Sun Nov  9 00:02:01 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session/pstore.rb: fix indentation.
-
-Sat Nov  8 23:47:45 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb (FileStore): use marshalized data.
-
-	* test/cgi/session_dir: add a session directory in test.
-
-	* test/cgi/test_cgi_session.rb: add a test. 
-
-Sat Nov  8 21:57:03 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb: remove debug code. 
-
-Sat Nov  8 21:33:53 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb: fix indentation. 
-
-Sat Nov  8 18:11:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/webrick/httpproxy.rb (WEBrick::HTTPProxyServer#do_CONNECT):
-	  use #bytesize instead of #size.  a patch submitted from
-	  raspberry lemon in  [ruby-core:18571].
-
-	* lib/webrick/httpauth/digestauth.rb, lib/webrick/httpproxy.rb,
-	  lib/webrick/httprequest.rb, lib/webrick/httpservlet/cgi_runner.rb,
-	  lib/webrick/httpservlet/abstract.rb, lib/webrick/httpresponse.rb,
-	  lib/webrick/httpservlet/cgihandler.rb, lib/webrick/utils.rb: ditto.
-
-Sat Nov  8 17:31:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_ungetc): ungetc position should
-	  not be changed from 1.8.   [ruby-core:19632]
-
-Sat Nov  8 17:15:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#make_switch): 1.9 Symbols respond
-	  to :match.  a patch from keith cascio, <keith at ucla.edu>.
-	  [ruby-core:19730]
-
-Sat Nov  8 12:10:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/gdbm/gdbm.c (fgdbm_index): make #index warn like Hash.
-	  [ruby-dev:37039]
-
-	* ext/sdbm/init.c (Init_sdbm): typo fixed.  [ruby-dev:37039]
-
-Sat Nov  8 07:07:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: detect stdio buffer pointers for uClibc.  a patch
-	  from Brian Candler <B.Candler at pobox.com> in [ruby-core:12020].
-	  [ruby-core:19713]
-
-Sat Nov  8 06:51:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/dbm.c (fdbm_index): make #index warn like Hash.
-
-	* ext/dbm/dbm.c (fdbm_key): new method.
-
-	* ext/sdbm/init.c: ditto.
-
-Sat Nov  8 06:20:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c: curses encoding should obey locale.
-
-	* ext/curses/curses.c (curses_getch): 1.9 getch should return one
-	  character string for single byte string.  wchar_t support may
-	  follow in the future.
-
-Sat Nov  8 05:46:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h (rb_io_t): added write_lock to serialize.
-	  [ruby-core:19668]
-
-	* gc.c (gc_mark_children): mark write_lock.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): Mutex also needs to be
-	  deferred.
-
-	* io.c (io_fflush, io_binwrite, fptr_finalize): serializes writing.
-
-Tue Nov 11 17:37:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_accept): secure fd before accept because if
-	  error causes in securing, cannot restore the state of accepted
-	  socket.
-	  fixed [ruby-core:19728]
-
-Sat Nov  8 05:31:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* safe.c (safe_setter): add warning for $SAFE=3.
-
-Fri Nov  7 22:51:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* inits.c (rb_call_inits): do not repeat.
-
-Fri Nov  7 12:26:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb#eval_input): remove extra  @context.prompt_i.
-	  [ruby-core:19718]
-
-Fri Nov  7 11:55:30 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* nkf.c: update to r1.188. fixes for 16bit environment.
-
-Fri Nov  7 07:32:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: support Rational and Complex as 1.8
-	  does.  a patch from Hiroshi Moriyama in [ruby-dev:36899].
-
-Fri Nov  7 06:58:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (Init_String): remove Symbol#===.  [ruby-dev:37026]
-
-Fri Nov  7 02:00:12 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/rexml/entity.rb (unnormalized): do not call
-	  document.record_entity_expansion if document is nil.
-	  see <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=502535>.
-	  Thanks, Naohisa Goto.
-
-	* test/rexml/test_document.rb: ditto.
-
-Fri Nov  7 01:24:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: binary encoding spec is no longer needed in 1.9.
-
-Mon Nov 10 09:56:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (ifs_open_socket): should retry without proto_buffer
-	  if cannot find the suitable protocol. a patch from Heesob Park.
-	  fixed [ruby-core:19713]
-
-Thu Nov  6 22:05:36 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fole_s_connect, fole_initialize,
-	  folevariant_initialize): check argument type of WIN32OLE.connect,
-	  WIN32OLE.new, WIN32OLE_VARIANT.new.
-
-	* test/win32ole/test_win32ole.rb (test_s_new_exc, test_s_connect_exc):
-	  ditto.
-
-	* test/win32ole/test_win32ole_variant.rb (test_s_new_exc): ditto.
-
-	* test/win32ole/test_win32ole_method.rb: add assertion of
-	  WIN32OLE_METHOD.new.
-
-Tue Nov  4 08:00:00 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* test/zlib/test_zlib.rb(test_readchar): compare in same type.
-
-Tue Nov  4 03:28:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_join): do not repeat self in a recursive array.
-	  [ruby-dev:37019]
-
-Tue Nov  4 01:56:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_mutex_synchronize): fixed prototype.
-
-	* thread.c (rb_mutex_synchronize): fixed function name.
-
-Mon Nov  3 16:32:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing.h: needs RUBY_EXTERN instead of extern for mswin.
-
-Sat Nov  1 07:09:40 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb:  Don't require rubygems/defaults.rb.
-
-Mon Nov  3 13:01:13 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* array.c (rb_ary_take_first_or_last): renamed rb_ary_partial more
-	  appropriately.
-	  (ary_take_pos_flags): new enum. makes the fourth argument of
-	  rb_ary_take_first_or_last more descriptive.
-	  (rb_ary_partial): renamed rb_ary_partial0 more appropriately.
-	  takes a new parameter klass for what class to instanciate.
-
-Mon Nov  3 13:00:26 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* range.c (rb_range_beg_len): rb_raise takes C values as arguments.
-	  [BUG] ranges turned into other value in a message of RangeError.
-
-Mon Nov  3 06:41:19 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_event_free): invoke IConnectionPoint::Unadvise
-	  before invoking IConnectionPoint::Release.
-
-	* test/win32ole/test_win32ole_event.rb, test/win32ole/err_in_callback.rb,
-	  test/win32ole/test_err_in_callback.rb, 
-	  test/win32ole/test_win32ole_variant_outarg.rb,
-	  test/win32ole/orig_data.csv: Use ActiveX Data Object
-	  Library instead of InternetExplorer.
-	  remove test/win32ole/test_win32ole_variant_with_ie.rb.
-
-Sun Nov  2 16:41:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (Init_zlib): defines readbyte instead redefining
-	  readchar.
-
-Fri Oct 31 21:58:50 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/converter.rb (RSS::Converter): use String#encode.
-
-Fri Oct 31 18:05:05 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans, maccroatioan-tbl.rb,
-	  maccyrillic-tbl.rb, maciceland-tbl.rb: new single-byte
-	  transcodings (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Fri Oct 31 12:51:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_globs): need taint check.  reported by steve
-	  <oksteev at gmail.com>
-
-Fri Oct 31 12:42:45 2008  wanabe  <s.wanabe@gmail.com>
-
-	* array.c (rb_ary_decrement_share): fix to work recycling
-	  shared-array without the following.  [ruby-dev:36991]
-
-	* array.c (ary_make_substitution): don't recycle substitution array.
-
-Fri Oct 31 11:35:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_set_default_internal): no alias "internal" if
-	  defalt internal is not set.  [ruby-dev:37000]
-
-Fri Oct 31 21:28:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/webrick/httpauth/digestauth.rb
-	  (WEBrick::HTTPAuth::DigestAuth#initialize): fix typo.
-
-Fri Oct 31 18:51:42 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_array.rb (test_array_subclass): test for r20076.
-
-Fri Oct 31 18:42:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* array.c (ary_partial0): recovers the mistakenly change feature at r19723.
-	  Array#[m,n] had returned an Array even for an instance of a
-	  subclass.
-
-Fri Oct 31 12:27:52 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec: supports that the build directory != srcdir.
-
-Thu Oct 30 23:32:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/test_delegate.rb (test_syscallerror_eq): ignored because the
-	  behaviour is now unspecified.
-
-Thu Oct 30 21:32:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_permutation): hide temporal array.
-
-Thu Oct 30 14:45:45 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans: refactoring to make it easier
-	  to add more transcodings (with Yoshihiro Kambayashi)
-
-	* enc/trans/iso-8859-1-tbl.rb: new file to avoid having to
-	  treat ISO-8859-1 as special
-
-Thu Oct 30 14:10:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): templates a, A, Z should propagate encoding
-	  of original strings.  templates b, B, h, H brings ASCII-8BIT to
-	  the result.
-
-Thu Oct 30 09:31:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_locale_encoding): makes an alias for locale.
-	  [ruby-dev:36976]
-
-	* encoding.c (rb_enc_set_default_external): ditto for external.
-
-	* encoding.c (rb_enc_set_default_internal): ditto for internal.
-
-Thu Oct 30 03:30:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (load_file_internal): should not set script encoding to
-	  ASCII-8BIT.
-
-	* ruby.c (load_file_internal): do not auto convert scripts even
-	  when default_internal is set.  [ruby-core:19579]
-
-Thu Oct 30 02:20:33 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_sort_bang): remove SEGV when replacing array with
-	  embedded one during sort.  [ruby-dev:36983]
-
-	* test/ruby/test_array.rb (test_sort!): add tests for above.
-
-Thu Oct 30 01:44:23 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: add some tests.
-
-Thu Oct 30 01:32:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_splice): remove redundant check.
-
-Thu Oct 30 01:24:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_cmp): fix condition which always returned true
-	  because ENCODING_GET returns unsigned long.
-
-Thu Oct 30 01:10:32 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb (test_permutation): add a test that replaces
-	  array during permutation.
-
-Wed Oct 29 23:31:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_check_dummy_enc): new function to check dummy
-	  encoding.
-
-	* string.c (rb_str_upcase_bang): case conversion functions should
-	  not be applicable to strings in dummy encoding.  [ruby-dev:36985]
-
-Wed Oct 29 23:57:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_sort_bang): replacing array during sort broke
-	invariant of array.  [ruby-dev:36983]
-
-Wed Oct 29 21:06:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_rewind): should reset fptr->readconv if it's
-	  available.
-
-	* io.c (more_char): clear readconv at EOF.
-
-	* test/ruby/test_file.rb: should not read after EOF.  use rewind
-	  instead.
-
-Wed Oct 29 20:45:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/webrick/utils.rb (start_server): provide a reference to log of
-	  webrick.
-
-	* test/webrick/test_httpproxy.rb, test/webrick/test_httpauth.rb,
-	  test/webrick/test_cgi.rb, test/webrick/test_httpserver.rb,
-	  test/webrick/test_server.rb, test/webrick/test_filehandler.rb: use
-	  webrick log as an assertion message.
-
-Wed Oct 29 16:41:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_pack): set encoding from packing string and UTF-8 for
-	  "U".  [ruby-core:19590]
-
-Wed Oct 29 15:50:00 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* complex.c (imp1, imp2): should declare type.
-	  [BUG] at IA-64
-
-Wed Oct 29 14:36:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (revision.h): have to be updated daily or by non-trivial
-	  commits.
-
-Wed Oct 29 13:18:02 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README, README.ja: Update the portability section.
-
-Wed Oct 29 13:02:17 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in (rb_cv_lib_xpg4_needed): Drop legacy FreeBSD
-	  support regarding libxpg4.  Those old versions of FreeBSD
-	  shipped with the library don't have a working pthread library
-	  anyway.
-
-Wed Oct 29 11:50:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (dln-a-out): cannot make shared library nor work with
-	  ELF.  [ruby-core:19571]
-
-Wed Oct 29 11:01:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_open): shouldn't seek here.
-
-	* win32/win32.c (rb_w32_write): write to the end of the file when
-	  FAPPEND is specified.
-
-Wed Oct 29 09:30:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): cache common interned IDs.
-
-Wed Oct 29 00:43:39 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: uses macro in declarations.
-
-Wed Oct 29 00:29:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_open): need to seek to the end of the file when
-	  O_APPEND is specified.
-
-Wed Oct 29 00:08:05 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* math.c (rb_math_{atan2,cos,cosh,hypot,log,sin,sinh,sqrt}): added.
-
-	* complex.c: follows the above change.
-
-Tue Oct 28 23:29:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (kanji_convert): output unicode chars.
-	  [ruby-dev:36957]
-
-	* ext/nkf/nkf-utf8/nkf.c (numchar_getc): increase buffer size.
-	  reported and patched at [ruby-dev:36957] by mame.
-
-Tue Oct 28 23:03:46 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_proc.rb: filled all patterns for testing
-	  vm_yield_setup_args.
-
-Tue Oct 28 23:05:35 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: continues to support canonicalization *unofficially*
-	  for an odd library mathn for the time being (only 1.9.x).
-	  since grand mathn must be very very special library for us.
-
-	* rational.c: ditto.
-
-	* ext/mathn/*/*: follow the above changes.
-
-Tue Oct 28 21:31:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (parser_yylex): check EOF explicitly.
-
-Tue Oct 28 21:11:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (extract_binmode): new function to extract binmode/textmode
-	  options from hash.
-
-	* io.c (rb_io_extract_modeenc): use above function.
-
-	* io.c (rb_io_s_pipe): recognize binmode/textmode options.
-
-	* io.c (make_readconv): now can specify the size of cbuf.
-
-	* io.c (read_all, appendline, io_getc, rb_io_ungetc): follow above
-	  change.
-
-	* win32/win32.c (rb_w32_pipe_exec): internal fds should be always
-	  binmode.
-
-Tue Oct 28 17:22:35 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/make-snapshot.rb: merged back from trunk.
-
-Tue Oct 28 16:43:05 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/make-snapshot.rb: had returned wrong sizes for generated
-	  archives.
-
-Tue Oct 28 12:42:28 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/make-snapshot.rb (package): did not accept tagnames with the
-	  prefix "previewN"
-
-Tue Oct 28 12:06:07 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/rubygems/test_gem.rb (@default_dir_re): considers 
-	  --program-suffix and prefix configure options.
-
-Tue Oct 28 11:06:48 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* version.h: set 1.9.1 into Ruby's version number.
-
-Tue Oct 28 10:42:50 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* gem_prelude.rb: considers --program-suffix and prefix configure
-	  options.
-
-	* lib/rubygems/defaults.rb: ditto.
-
-Tue Oct 28 09:51:48 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bootstraptest/test_thread.rb: ignore some exceptions.
-	  [ruby-dev:36951]
-
-Tue Oct 28 09:19:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (RUNRUBY): now ruby requires something from
-	  gem_prelude, so need to set library path.
-
-Mon Oct 27 22:29:11 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* vm_insnhelper.c (vm_yield_setup_args): supports optional parameters.
-	  Fixed [ruby-core:19503].
-
-	* vm_insnhelper.c (vm_yield_setup_block_args): a new function. extracted
-	  from vm_yield_setup_args.
-
-	* vm_insnhelper.c (vm_yield_setup_block_args_complex): ditto.
-
-	* test/ruby/test_proc.rb: added tests for arguments on a Proc from
-	  Kernel#proc called.
-
-Mon Oct 27 20:03:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/mathn/complex/complex.c: no need to define rb_cComplex because
-	  it's already defined at $(srcdir)/complex.c.
-
-	* ext/mathn/rational/rational.c: no need to define rb_cRational because
-	  it's already defined at $(srcdir)/rational.c.
-
-Mon Oct 27 15:58:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): preserves $..  [ruby-dev:36937]
-
-	* io.c (argf_init): initial value of $. should be 0.
-	  see [ruby-dev:36937].
-
-Mon Oct 27 15:38:38 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/test_mini_test.rb
-	  (test_assert_raises_triggered_different): the test failed when a
-	  file path in the backtrace contontains something except [\w\/\.],
-	  e.g. hyphen, Japanese characters or backslash.
-
-	* test/minitest/test_mini_test.rb
-	  (test_assert_raises_triggered_subclass): ditto.
-
-Mon Oct 27 15:32:08 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/test_mini_test.rb: fixed that r19958 made
-	  test-all fail when the ruby was built at $(srcdir).
-
-Mon Oct 27 12:04:58 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/envutil.rb: reverted the changeset 19948 because it
-	  concealed unexpected behaviours of ruby.
-
-	* test/ruby/test_io.rb: ditto.
-
-Mon Oct 27 12:02:53 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/nkf/nkf.c (rb_nkf_convert): should specify type of variable.
-
-Mon Oct 27 11:34:56 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/test_mini_test.rb (test_filter_backtrace):
-	  fixed failure on Ruby built at out of $(srcdir).
-
-	* test/minitest/test_mini_test.rb (test_Filter_backtrace_unit_starts):
-	  ditto.
-
-Mon Oct 27 10:02:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (read_all): the 3rd argument maybe Qnil.
-
-Mon Oct 27 01:29:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/nkf/test_nkf.rb: add a test for [ruby-dev:36909].
-
-Mon Oct 27 01:05:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_convert): avoid GC.
-	  reported in [ruby-dev:36909] and patched [ruby-dev:36941] by mame.
-
-Sun Oct 26 21:28:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/json/test_json.rb: remove dependency on permutation gem.
-
-Sun Oct 26 19:18:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (blocking_region_{begin,end}): declared as inline.
-
-	* util.c (freedtoa): used only when MULTIPLE_THREADS is not defined.
-
-	* win32/win32.c (rb_w32_pipe): serial is DWORD.
-
-	* ext/etc/etc.c (sGroup): getgrent may not be available.
-
-Sun Oct 26 18:11:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/wait/{extconf.rb,wait.c}: needs sys/ioctl.h for fcntl on
-	  cygwin.
-
-Sun Oct 26 18:18:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb: disables debug and verbose flags to suppress failure
-	  messages.  interpolation does not occur inside single quotes.
-
-Sun Oct 26 18:42:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (assert_in_out_err): disables builtin rubygems
-	  to get rid of the interference.
-
-	* test/ruby/test_io.rb (ruby): ditto.
-
-Sun Oct 26 13:30:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (read_all): use the given buffer to read when needs readconv.
-	  based on the patch by wanabe <s.wanabe AT gmail.com> at
-	  [ruby-dev:36931].
-
-Sun Oct 26 07:57:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*:  Update to RubyGems 1.3.1 r1909.
-
-Sun Oct 26 07:35:56 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/unit.rb: Imported minitest 1.3.0 r4429.
-	* test/minitest/*: ditto.
-
-Sun Oct 26 02:16:29 2008  Yuki Sonoda (Yugui)   <yugui@yugui.jp>
-
-	* configure.in ($MANTYPE): followed ruby.1, which had moved.
-
-	* instruby.rb (:man): ditto.
-
-	* mdoc2man.rb: fixed for the case Xr with 2 arguments.
-
-Sun Oct 26 01:42:45 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/irb.1: new manual page.
-
-Sun Oct 26 00:11:48 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/ruby.1: moved into man/. added some descriptions.
-
-	* man/goruby.1: new file.
-
-	* instruby.rb (:man): followed ruby.1.
-
-Sat Oct 25 20:05:22 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_result): bug fix. The millisecond is 1/1000.
-
-Sat Oct 25 11:12:40 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ruby.c (usage): updated the description of -E option.
-
-Sat Oct 25 09:54:10 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Fixed a bug in read_to_char() that would slurp
-	  whole files if the encoding was invalid.  It will now read
-	  up to 10 bytes ahead to find a valid character boundary or
-	  give up.  [ruby-core:19465]
-
-	* test/csv/test_features.rb, test/csv/test_table.rb, test/csv/test_row.rb:
-	  Loosened some tests to check for a compatible? Encoding instead
-	  of an exact Encoding.  [ruby-core:19470]
-
-Sat Oct 25 07:42:49 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Update to RDoc 2.2.2 r192.
-
-Sat Oct 25 04:00:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/us_ascii.c (us_ascii_mbc_enc_len): made static.  a patch by
-	  Tadashi Saito <shiba AT mail2.accsnet.ne.jp> at [ruby-dev:36916]
-
-	* signal.c (signal_buff): made static.  a patch by Tadashi Saito
-	  <shiba AT mail2.accsnet.ne.jp> at [ruby-dev:36915]
-
-	* util.c (freedtoa): made static to get rid of name clash.  a patch by
-	  Tadashi Saito <shiba AT mail2.accsnet.ne.jp> at [ruby-dev:36913]
-
-	* util.c (ruby_dtoa): added prefix, ditto.
-
-Sat Oct 25 03:43:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (lambda): need to adjust lpar_beg for both of the parser and
-	  ripper.
-
-Sat Oct 25 01:29:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/mathn/rational/rational.c: undef duplicated macro definition
-	  first to shut up the warning.
-
-	* ext/mathn/rational/rational.c (rb_rational_new_mathn): specify
-	  omitted return value.
-
-Sat Oct 25 00:14:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sample): fixed sizes and randomness.
-
-Fri Oct 24 23:04:42 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (sitedir): considers --program-prefix and
-	  --program-suffix.
-	  (vendordir): ditto.
-	  (rubyhdrdir): ditto.
-
-	* mkconfig.rb (CONFIG["rubylibdir"]): ditto.
-
-	* win32/Makefile.sub: ditto.
-
-	* instruby.rb (:rdoc): ditto.
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths): ditto.
-
-Fri Oct 24 22:59:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb (test_sample): add tests for size of
-	  returned array and randomness.
-
-Fri Oct 24 21:50:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* id.h, template/id.h.tmpl (enum ruby_method_ids): reordered.
-
-Fri Oct 24 21:19:45 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* ext/mathn/rational.c: change several global functions.
-
-Fri Oct 24 21:05:38 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb: allow symbolized key.
-
-	* test/cgi/test_cgi_tag_helper.rb: add a test.
-
-Fri Oct 24 20:54:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (exts): renamed to get rid of the existent directory.
-
-Fri Oct 24 20:45:41 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* ext/mathn/rational.c: change several global functions to static
-	  function.
-
-Fri Oct 24 19:57:19 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_dump): should have removed commented out
-	  unnecessary code.  [ruby-cvs:27131]
-
-Fri Oct 24 19:16:36 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* id.h (enum ruby_method_ids): ISO C forbids comma at end of
-	  enumerator list.
-
-Fri Oct 24 18:29:00 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/mathn.rb: moved into ext/mathn/rational/rational.c and
-	  ext/mathn/complex/complex.c.
-	* ext/mathn: new mathn ext-libralies.
-
-Fri Oct 24 18:21:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_array.rb (TestArray#test_join): should restore
-	  global variable after the test.  [ruby-dev:36896]
-
-	* test/ruby/test_hash.rb (TestHash#test_to_s): ditto.
-
-Fri Oct 24 17:43:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (lambda): need to adjust lpar_beg for ripper as well.
-	  [ruby-dev:36702]
-
-Fri Oct 24 16:13:12 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (read_multipart): change field value as String
-	  from StringIO or Tempfile when multipart parse except file field.
-	  add files method that can get uploaded files. [ruby-dev:36547]
-
-	* test/cgi/test_cgi_multipart.rb: fix the test for core.rb.
-
-Fri Oct 24 14:22:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ext): split out the target for extension library.
-
-	* common.mk (encs): depends on enc and trans.
-
-Fri Oct 24 10:23:24 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_signal.rb (TestSignal#test_exit_action): Thread
-	  may terminate before sysread. [ruby-dev:36835]
-
-Thu Oct 23 22:06:23 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* distruby.rb: removed. "make dist" uses tool/make-snapshot for the 1.9
-	  series. distruby.rb has been no longer used.
-
-Thu Oct 23 17:30:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_class_instance_methods): rdoc fixed.  [ruby-core:19458]
-
-Thu Oct 23 16:19:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/init.rb (IRB.load_modules): catch LoadError explicitly.
-	  a patch from Daniel Berger <Daniel.Berger at qwest.com> in
-	  [ruby-core:19451].  fix [ruby-core:19450]
-
-Thu Oct 23 16:16:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyport): check if the port range.
-	  [ruby-core:19460]
-
-Thu Oct 23 14:08:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyname): unuse unnecessary
-	  object.
-
-	* ext/socket/socket.c (sock_s_getservbyport): the port should be
-	  converted before the proto so that the #to_int of the former cannot
-	  alter the latter.
-
-Thu Oct 23 10:55:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_dump): use \u{ff} escape for UTF-8 encoding
-	  string.
-
-Thu Oct 23 09:26:22 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyport): cast to get rid of
-	  warning.
-
-Thu Oct 23 08:06:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyport): port should be
-	  network byte order.  a patch from Dave Thomas in [ruby-core:19454].
-
-Thu Oct 23 01:26:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_conv_enc_opts): new function to convert with
-	  specifying ecflags and ecopts.
-
-	* ext/zlib/zlib.c (gzfile_newstr): specify ecflags and ecopts for
-	  conversion using above function.
-
-	* ext/zlib/zlib.c (gzfile_newstr): use own rb_econv_t for dummy
-	  encoding to handling stateful encoding (e.g. iso-2022-jp).
-	  [ruby-dev:36857]
-
-	* ext/zlib/zlib.c (gzfile_getc): ditto.
-
-Thu Oct 23 01:24:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): get rid of side effects.
-
-Thu Oct 23 00:10:01 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: separate data structure between rb_fiber_t and
-	  rb_context_t (rb_fiber_t includes rb_context_t).
-	  rb_fiber_t has double linked list of fibers in same threads.
-
-Wed Oct 22 17:25:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (pipe_open): remove unnecessary flush before fork.
-	  a patch from Kazuhiro NISHIYAMA <zn at mbf.nifty.com>
-	  in [ruby-dev:36840].
-
-Wed Oct 22 16:27:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_yield_setup_args): should not drop arguments
-	  corresponding to default paramters.
-
-Wed Oct 22 14:59:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_larglist): should not allow semicolon separated local
-	  variable declarations if formal argument list is not surrounded
-	  by parentheses, mostly because semicolon outside of parentheses
-	  appears to terminate the expression.
-
-Wed Oct 22 14:52:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new_with_enc): no implicit strlen call.
-	  [ruby-dev:36854]
-
-	* string.c (rb_external_str_new_cstr): new function to create
-	  string from external NUL terminated C string.
-
-	* string.c (rb_locale_str_new_cstr): ditto.
-
-	* ext/readline/readline.c: now use rb_locale_str_new_cstr().
-
-	* test/sdbm/test_sdbm.rb (TestSDBM#test_delete_with_block):
-	  deleted key to the block may be a copy of specified key.
-
-	* test/dbm/test_dbm.rb (TestDBM#test_delete_with_block): ditto.
-
-Wed Oct 22 13:16:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (unescape_escaped_nonascii): back out the last change on
-	  the function.  [ruby-dev:36818]
-
-Wed Oct 22 07:09:19 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetc): should be able to unget
-	  Fixnum.
-
-	* ext/stringio/stringio.c (strio_ungetc): should convert unget
-	  string.
-
-	* ext/stringio/stringio.c (strio_ungetbyte): new method.
-
-Wed Oct 22 05:46:25 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/vm.h: write a comment.
-
-	* common.mk: remove vm.h from any rules.
-	  vm.h is not needed on this version.
-
-	* vm_core.h: ditto.
-
-Wed Oct 22 05:39:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y (arg_concat_gen): concat target node should be NODE_ARRAY.
-	  [ruby-core:19413]
-
-	* bootstraptest/test_method.rb: add tests.
-
-Wed Oct 22 00:29:13 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb (test_core_03_notify): Fixed test failures
-	  [ruby-dev:36837].
-
-Wed Oct 22 00:22:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new_with_enc): wrong condition to
-	  calculate strlen().
-
-	* ext/readline/readline.c: add encoding support.
-
-Tue Oct 21 23:12:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_write): should convert writing
-	  string to the encoding of the buffer.
-
-	* hash.c (rb_any_hash): typo fixed.
-
-	* ext/zlib/zlib.c (rb_gzwriter_write): oops, IO string conversion
-	  need to be done by to_s.
-
-Tue Oct 21 22:38:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): should adjust argc, argv in struct
-	  foreach_arg.
-
-Tue Oct 21 21:52:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (rb_gzwriter_write): conversion should be done
-	  using to_str, not to_s.
-
-	* ext/zlib/zlib.c (rb_gzwriter_write): need proper conversion
-	  according to gz encoding.
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetc): convert string encoding
-	  before unget.
-
-Tue Oct 21 21:33:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (assert_nothing_raised): raise with backtrace.
-
-Tue Oct 21 20:12:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_nothing_raised): set backtrace.
-
-Tue Oct 21 18:17:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c: remove obsolete prototype macros.
-
-	* ext/zlib/zlib.c (struct gzfile): add encoding field to gzfile
-	  structure.
-
-	* ext/zlib/zlib.c (rb_gzreader_getc): now works on characters.
-
-	* ext/zlib/zlib.c (rb_gzreader_getbyte): new method to retrieve
-	  single byte.
-
-	* ext/zlib/zlib.c (rb_gzreader_readbyte): ditto.
-
-	* ext/zlib/zlib.c (rb_gzreader_each_byte): renamed from each_char
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetc): allow unget strings.
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetbyte): renamed from ungetc.
-
-Tue Oct 21 13:28:42 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* io.c, include/ruby/intern.h (rb_io_ascii8bit_binmode): externed.
-
-	* ext/socket/socket.c (init_sock): use rb_io_ascii8bit_binmode()
-	  instead of rb_io_binmode().
-
-Tue Oct 21 13:17:39 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* mdoc2man.rb: moved into tools/.
-
-	* instruby.rb: followed the change of mdoc2man.
-
-Tue Oct 21 11:34:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (strip_glibc_option, map_charset): check if
-	  encoding is a string.  based on the patch by Hiroshi Moriyama at
-	  [ruby-dev:36811].
-
-	* test/iconv/test_basic.rb (test_invalid_arguments): added tests.
-
-Tue Oct 21 10:40:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_file_open_internal): should initialize fmode before using.
-
-Tue Oct 21 08:56:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regparse.c (parse_char_class): CCV_SB is only for single
-	  byte.  [ruby-dev:36786]
-
-Tue Oct 21 01:49:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_modeenc): plain rb/wb should set ASCII-8BIT
-	  to the external_encoding.
-
-	* io.c (rb_file_open_internal): ditto.
-
-	* io.c (NEED_WRITECONV): no conversion when the external_encoding
-	  is ASCII-8BIT.
-
-	* io.c (do_writeconv): skip ASCII-8BIT.
-
-Tue Oct 21 00:51:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_ascii8bit_binmode): renamed from rb_io_binmode.
-	  (rb_io_binmode): don't change encoding conversion.
-	  (rb_io_binmode_m): call rb_io_ascii8bit_binmode.
-
-Mon Oct 20 21:19:00 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (read_multipart): file's encoding is ascii-8bit
-	  from file field of multipart form.
-
-Mon Oct 20 20:16:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (Init_zlib): add getbyte as an alias to getc.
-	  [ruby-dev:36801]
-
-Mon Oct 20 17:31:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_equal): should not compare recursively.
-	  [ruby-dev:36796]
-
-Mon Oct 20 16:48:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/ruby.h (ExportStringValue): new macro to convert
-	  string in internal encoding to external to export.
-
-	* string.c (rb_str_export): new function to do conversion to
-	  external encoding.
-
-	* ext/sdbm/init.c: encoding conversion support.
-
-	* ext/dbm/dbm.c: ditto.
-
-Mon Oct 20 15:42:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_locale_str_new): new function to convert string
-	  from locale to internal encoding.
-
-Mon Oct 20 09:47:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/runner.rb: search srcdir/test/arg at first to find test/ruby
-	  directory when "ruby" is specified.
-
-Mon Oct 20 08:20:01 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: support Encoding.default_internal.
-
-	* ext/tk/tcltklib.c: ditto.
-
-	* ext/tk/extconf.rb: improve the strategy for searching Tcl/Tk headers.
-
-Mon Oct 20 00:57:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): call given block for
-	  filtering files.
-
-	* test/runner.rb: search srcdir/test/arg, srcdir/arg.
-
-	* bin/testrb: show usage if no files given.
-
-Sun Oct 19 21:19:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (srcs): removed ID_H_TARGET.
-
-	* tool/generic_erb.rb: always overwrites if no if-change option.
-	  sends the result to stdout if no output option.
-
-	* template/id.h.tmpl: shows which token differs.
-
-Sun Oct 19 18:15:15 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans: adding WINDOWS-wwww encodings
-	  (wwww = 874/1250/1251/1253/1254/1255/1256/1257)
-	  (contributed by Yoshihiro Kambayashi)
-
-	* enc/trans/windows-wwww-tbl.rb: 8 new files
-	  (contributed by Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added test_windows_wwww
-	  (contributed by Yoshihiro Kambayashi)
-
-Sun Oct 19 07:37:13 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (log2,cbrt,frexp,ldexp,hypot,erf,erfc,gamma,lgamma):
-	  should be also provided as module function.  [ruby-dev:36787]
-
-Sun Oct 19 07:25:08 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* keywords, lex.c.src, opt_insn_unif.def, opt_operand.def: moved rarely changed
-	  input files for code generators into defs/ directory.
-
-	* Makefile.in (lex.c): followed keywords and lex.c.src.
-
-	* common.mk (parser.o): followed keywords.
-	  (INSNS): followed opt_*.def
-
-	* tools/instruction.rb: followed opt_*.def.
-
-Sun Oct 19 12:28:01 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* test/csv/*:  Renamed tc_* files to test_* to fit in within Ruby's
-	  testing process.
-
-Sun Oct 19 00:15:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_nothing_thrown): don't intern.
-
-Sat Oct 18 14:40:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_sadded): remove newly defined singleton method
-	  that should not exist after exception handling.  [ruby-dev:36569]
-
-Sat Oct 18 14:27:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (opt_block_arg): allow trailing comma after usual
-	  arguments.  not after block argument.
-
-Sat Oct 18 13:30:53 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new): a new function to convert from
-	  external encoding to internal encoding.  if something went
-	  wrong, it returns a string with the external encoding.
-
-	* string.c (rb_external_str_new_with_enc): same as above besides
-	  you can specify the source encoding.
-
-	* ruby.c (ruby_set_argv): use rb_external_str_new()
-
-	* ruby.c (set_arg0, ruby_script): ditto.
-
-Sat Oct 18 04:08:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#initialize): now Tempfile.new takes
-	  keyword arguments to open().  [ruby-dev:36756]
-
-Sat Oct 18 17:10:10 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* tool/transcode-tblgen.rb: added set_valid_byte_pattern
-	  to reduce coupling between table generation script and
-	  specific encodings.
-
-	* enc/trans/single_byte.trans: using set_valid_byte_pattern
-
-Sat Oct 18 16:39:39 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: in transcode_search_path, eliminated a warning
-	  on cygwin about pathlen potentially not being initialized
-
-Sat Oct 18 13:40:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_nothing_thrown): implemented.
-
-Sat Oct 18 01:33:22 2008  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* common.mk: use added options for generic_erb.rb.
-
-Sat Oct 18 00:47:51 2008  wanabe  <s.wanabe@gmail.com>
-
-	* array.c: don't recycle shared-array while sort!.
-
-Fri Oct 17 22:04:38 2008  wanabe  <s.wanabe@gmail.com>
-
-	* array.c: recycle shared-array when it isn't referenced.
-
-Fri Oct 17 20:29:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): specify ARG_ENCODING_NONE instead of
-	  ARG_ENCODING_FIXED for Regexp.new("", nil, "n").  [ruby-dev:36761]
-
-	* test/ruby/test_regexp.rb (TestRegexp#test_initialize): test
-	  updated.
-
-Fri Oct 17 19:46:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/ifchange, win32/ifchange.bat: --timestamp option added.
-
-	* tool/generic_erb.rb: --timestamp, --output and --if-change options
-	  added.
-
-Fri Oct 17 18:33:12 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* array.c (ary_resize_capa): renamed RESIZE_CAPA.
-
-Fri Oct 17 18:16:51 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (TestBigDecimal#test_sqrt_bigdecimal):
-	  test updated.  a patch from TAKANO Mitsuhiro <takano32 at jus.or.jp> in
-	  [ruby-dev:36736].
-
-Fri Oct 17 18:14:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (uncommon.mk): ignores failures at loading.
-
-	* test/rubygems/gemutilities.rb (RubyGemTestCase#build_rake_in):
-	  get rid of interference with other tests.
-
-Fri Oct 17 18:06:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (str_transcode0): String#encode without argument now
-	  behave as if :undef => :replace, :invalid => :replace specified.
-
-	* transcode.c (rb_econv_prepare_opts): should preserve options in
-	  any case.
-
-Fri Oct 17 11:48:18 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/socket/socket.c (init_sock): sockets should be binmode.
-
-	* test/socket/test_tcp.rb (test_encoding): ditto.
-
-Fri Oct 17 10:26:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/insns2vm.rb: remove -Kn option in shebang line because it's
-	  inconsistent with -Ks commandline option in common.mk.
-
-Fri Oct 17 01:26:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable0): in_pos and out_pos never be
-	  NULL, now.
-
-Fri Oct 17 00:39:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/test/unit.rb: sort the order of executing tests.
-
-Fri Oct 17 00:24:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_binmode): reset encoding conversion.
-
-Fri Oct 17 00:16:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (rb_getc, rb_io_fread, rb_io_fwrite, rb_read_pending):
-	  remove deprecated functions which do not work.  [ruby-dev:36697]
-
-Thu Oct 16 23:48:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (TESTS): removed to re-enable test for minitest.
-
-Thu Oct 16 23:37:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_set_sequence): fix memory leak.
-
-Thu Oct 16 23:27:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_equal): avoid incompatible character
-	  encodings error.
-
-Thu Oct 16 23:23:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_equal): failure message changed.
-
-Thu Oct 16 22:52:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit: removed test/unit.
-
-	* lib/test/unit.rb: new compatibility layer using minitest.
-
-	* bin/testrb: use above.
-
-	* test/runner.rb: ditto.
-
-Thu Oct 16 14:34:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, enc/depend (enc, trans): targets for sources.
-
-Thu Oct 16 14:30:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (lib): installs all files other than README etc.
-
-Thu Oct 16 09:48:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): changed the message to clarify the
-	  third option argument is now ignored.  [ruby-dev:36753]
-
-Thu Oct 16 08:14:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): no warning when default_external already
-	  set by -E.
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_rubyopt):
-	  put -K after -E to set script encoding.
-
-Thu Oct 16 06:20:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_transcode.rb (TestTranscode#test_errors):
-	  String#encode now works without any argument. [ruby-dev:36740]
-
-Wed Oct 15 23:48:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* .gdbinit (rp): REGEXP handling fixed.
-
-	* string.c (rb_str_rindex_m): need not to call rb_enc_check on
-	  regexp.
-
-	* re.c (unescape_escaped_nonascii): try ASCII-8BIT encoding for
-	  broken strings.
-
-Wed Oct 15 23:11:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (DelegateClass): restored 1.8 behavior for
-	  DelegateClass as well.  [ruby-dev:36739]
-
-Wed Oct 15 22:19:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* array.c (RESIZE_CAPA): check whether len is longer than capacity.
-
-	* array.c (rb_ary_compact_bang): resize ary before changing capacity.
-	  fixed [ruby-dev:36704]
-
-Wed Oct 15 16:57:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* version.h (RUBY_DESCRIPTION): remove unnecessary space.
-
-Tue Oct 14 23:18:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator): simplified and restored 1.8
-	  behavior.  [ruby-dev:35986]
-
-Tue Oct 14 21:50:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (TESTS): skips minitest by default, since it interferes
-	  with test/unit.
-
-Tue Oct 14 21:36:29 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (load_conv_function51932): check
-	  having IMultiLanguage2 or IMultiLanguage. [ruby-dev:36716]
-
-	* ext/win32ole/extconf.rb: ditto.
-
-Tue Oct 14 20:45:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (Init_IO): $FILENAME and $* must be read-only.  [ruby-dev:36698]
-
-	* variable.c (*_getter, *_setter, *_marker): made public.
-
-	* include/ruby/ruby.h (rb_gvar_*_{getter,setter,marker}): declared.
-
-Tue Oct 14 20:32:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/single_byte.trans (transcode_tblgen_singlebyte): renamed
-	  from transcode_tblgen_windows.
-	  (transcode_tblgen_iso8859): use transcode_tblgen_singlebyte.
-
-Tue Oct 14 19:32:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (process_options): -U should be allowed in RUBYOPT
-	  environment variable.  [ruby-dev:36720]
-
-Tue Oct 14 14:11:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): -U can be followed by other options.
-
-Tue Oct 14 13:30:30 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans: added windows-1252
-
-	* enc/trans/windows-1252-tbl.rb: new file
-	  (contributed by Yoshihiro Kambayashi)
-
-	* tool/transcode-tblgen.rb: listed windows-1252 as '1byte'
-
-	* test/ruby/test_transcode.rb: added test_windows_1252
-	  (contributed by Yoshihiro Kambayashi)
-
-Tue Oct 14 12:22:32 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_variable.rb (TestVariable#test_variable): add
-	  a test of [ruby-dev:36698].
-
-Tue Oct 14 11:14:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (str_transcode0): should not raise error when
-	  default_internal is not set.  [ruby-core:19309]
-
-Tue Oct 14 11:14:26 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/net/pop.rb: check for invalid APOP timestamp. (CVE-2007-1558)
-	  [ruby-dev:36631]
-
-	* test/net/pop/test_pop.rb: ditto.
-
-Tue Oct 14 09:39:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (set_internal_encoding_once): check double contradicted
-	  specification of the encoding from command line.
-
-	* ruby.c (set_external_encoding_once): ditto.
-
-Tue Oct 14 08:28:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): allow reserved word to be keyword argument.
-
-Mon Oct 13 19:07:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (token_info_pop): show source filename. [ruby-dev:36710]
-
-Mon Oct 13 08:59:08 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (load_conv_function51932): support
-	  CP51932 on cygwin and mingw32. thanks to arton.
-
-	* test/win32ole/test_win32ole.rb (test_cp51932): ditto.
-
-Mon Oct 13 07:54:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): add -U command line option to specify
-	  utf-8 as default_internal.
-
-Mon Oct 13 07:42:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (str_transcode0): String#encode() with no encoding
-	  specified transcode the string into Encoding.default_internal.
-	  inspired by [ruby-core:19298].
-
-Sun Oct 12 18:00:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (set_ole_codepage, ole_cp2encoding,
-	  ole_wc2mb, ole_vstr2wc, ole_mb2wc): support CP51932 (only mswin32).
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sun Oct 12 12:03:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_insnhelper.h (ruby_vm_redefined_flag): apply optimization
-	  patch proposed by Paul Brannan.  [ruby-core:19171]
-
-Sun Oct 12 09:46:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (rb_strftime): suppressed warnings on cygwin.
-
-Sat Oct 11 19:49:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_prepare): use utf-8 encoding directly.
-
-Sat Oct 11 10:20:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (CLEANINGS): uses escaped form tabs to preventing the
-	  confusion.  [ruby-talk:317345]
-
-Sat Oct 11 08:51:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Rake::Application#standard_exception_handling): removed
-	  unnecessary SystemExit, and exits with false instead of system
-	  dependent value.  [ruby-talk:317330]
-
-Sat Oct 11 03:54:05 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: optimize 'for' statement when one variable given.
-
-	* benchmark/bm_loop_for.rb: added.
-
-	* benchmark/bm_loop_times.rb: modified.
-
-Sat Oct 11 12:09:05 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Added support for Encoding::default_internal.
-	* lib/csv/csv.rb:  Switched to new Hash syntax.
-
-Fri Oct 10 22:16:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (comment_at_top): needed for ripper too.
-
-Fri Oct 10 22:07:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby.h: updated macros for headers.  [ruby-core:19275]
-
-Fri Oct 10 19:21:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (magic_comment_encoding): warns when ignored.
-
-	* parse.y (parser_magic_comment): replaces '-' with '_'.
-
-	* parse.y (parser_yylex): allows magic comments indented and the
-	  second line or later.
-
-Fri Oct 10 17:26:50 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/ext/parser/parser.c (JSON_parse_string):
-	  associate encoding.
-
-Fri Oct 10 10:18:21 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/test/*: reverted back to test/unit.
-	* test/test/*: ditto
-	* lib/minitest/*: Imported minitest 1.3.0 r4333.
-
-Fri Oct 10 03:41:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): check if codepoint for %c is valid.
-	  [ruby-dev:36691]
-
-Fri Oct 10 01:55:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_names): minor improvement.
-
-Fri Oct 10 00:21:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (ParseError.filter_backtrace): removes internal
-	  backtrace.
-
-Fri Oct 10 00:11:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* transcode.c (rb_econv_add_converter): remove unnecessary NULL check.
-
-Thu Oct  9 23:53:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-c-mode): buffer may not have file
-	  name.
-
-Thu Oct  9 23:30:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c (run_exec_dup2): fix resource leak.
-
-Thu Oct  9 23:19:02 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c (rb_run_exec_options): fix resource leak.
-
-Thu Oct  9 22:13:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_module.rb (test_remove_class_variable): add a test
-	  for Class#remove_class_variable.
-
-	* test/ruby/test_object.rb (test_remove_instance_variable): add a test
-	  for Object#remove_instance_variable.
-
-Thu Oct  9 22:04:38 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* variable.c (rb_mod_remove_cvar): fix r19711.
-
-Thu Oct  9 21:17:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/syck.c (syck_lookup_sym): remove reading uninitialized
-	  variable.
-
-Thu Oct  9 16:34:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/ext/generator/extconf.rb: fix target.
-
-	* ext/json/ext/parser/extconf.rb: ditto.
-
-Thu Oct  9 14:37:59 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* include/ruby/ruby.h: embeds the elements of an array into its
-	  struct RArray for # of elements <= 3.
-
-	* array.c: ditto.
-
-	* gc.c (gc_mark_children): following the change of struct RArray.
-
-	* ext/tk/tcltklib.c (ip_ruby_cmp): ditto.
-
-	* parse.y (coverage): ditto.
-
-	* proc.c (curry): ditto.
-
-	* .gdbinit: ditto.
-
-Thu Oct  9 11:29:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): new instance method Encoding#names,
-	  returns its name and alias names.
-
-	* encoding.c (enc_names): defined for Encoding#names.
-
-	* encoding.c (enc_names_i): defined for enc_names.
-
-Thu Oct  9 08:47:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_wait_fd_rw): should not block by select if
-	  there's only one thread living.  fixed [ruby-dev:36646].
-
-Wed Oct  8 20:59:52 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_init_cp): initialize WIN32OLE.codepage
-	  according to Encoding.default_internal and
-	  Encoding.default_external.
-
-Wed Oct  8 17:02:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json):
-	  process each unpacked Unicode character.
-
-Wed Oct  8 15:00:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/parser.rb
-	  (JSON::Pure::Parser#parse_string): force_encoding("UTF-8").
-
-Wed Oct  8 11:56:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: assert_nothing_thrown,
-	  assert_raise, assert_not_equal, assert_no_match, assert_not_nil,
-	  assert_not_same are coming back as alias.
-
-Wed Oct  8 11:18:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (autoload_delete, autoload_file): should not delete
-	  autoload table, since it may be shared with duplicated modules.
-	  [ruby-core:19181]
-
-Wed Oct  8 02:38:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_default_internal_encoding): merged a patch from
-	  Michael Selig <michael.selig at fs.com.au> in [ruby-core:18985].
-
-	* io.c (rb_io_ext_int_to_encs): ditto.
-
-	* ruby.c (proc_options): support default internal encoding in -E
-	  option.
-
-Wed Oct  8 00:03:39 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (today,now): should produce own instances.
-	  [ruby-talk:317020]
-
-Tue Oct  7 16:43:51 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json):
-	  force_encoding before gsub.
-
-Tue Oct  7 16:35:41 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json):
-	  downcase the result of Unicode escape.
-
-Mon Oct  6 16:44:52 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::QueryExtension::initialize_query): fix the
-	  condition.
-
-	* test/cgi/test_cgi_core.rb: bug fix encoding.
-	  thanks to TAKANO Mitsuhiro <takano32 at jus.or.jp> .
-
-	* test/cgi/test_cgi_multipart.rb: temporary comment in.
-
-Mon Oct  6 15:22:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_mark_children): ignores T_ZOMBIE.
-
-Mon Oct  6 12:45:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_module.rb (TestModule#_wrap_assertion): add
-	  definition.  is this really needed?
-
-	* test/ruby/test_module.rb (TestModule#test_mod_constants): should
-	  not depend on global Module constants.
-
-Mon Oct  6 12:38:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Assertions#assert_nothing_raised):
-	  should take optional message argument.
-
-Mon Oct  6 12:18:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): string comparison should be
-	  transitive.  [ruby-dev:36484]
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb#test_str_eq): test
-	  updated.
-
-Mon Oct  6 09:00:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (test_sqrt_bigdecimal): test
-	  updated.  a patch from TAKANO Mitsuhiro <takano32 at jus.or.jp>
-	  in [ruby-dev:36669].
-
-Sun Oct  5 23:34:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb ($config_h): now always defines for old libraries.
-
-Sun Oct  5 23:06:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_mod_modfunc): method undefined in included module
-	  may not have nd_body.  [ruby-core:18738]
-
-Sun Oct  5 21:28:58 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/rational.rb: resolved conflicts of aliases.
-
-	* lib/mathn.rb: avoided some warnings.
-
-Sun Oct  5 18:51:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: remove debug code introduced by previous change.
-
-Sun Oct  5 17:49:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/open-uri.rb (OpenURI.open_uri): set encoding to strio.
-
-Sun Oct  5 17:39:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_set_encoding): defined for
-	  StringIO#set_encoding.
-
-Sun Oct  5 11:24:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* eval.c: come back definition of environ.
-
-Sun Oct  5 09:19:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/utf8tbl.c: update table.
-
-Sat Oct  4 22:50:14 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports VMS.
-
-	* error.c: ditto.
-
-	* eval.c: ditto.
-
-	* eval_intern.h: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* include/ruby/ruby.h: ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* vms/config.h: removed.
-
-	* vms/vms.h: ditto.
-
-	* vms/vmsruby_private.c: ditto.
-
-	* vms/vmsruby_private.h: ditto.
-
-Sat Oct  4 22:44:23 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports Windows CE.
-
-	* eval.c: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* include/ruby/win32.h: ditto.
-
-	* ruby.c: ditto.
-
-	* strftime.c: ditto.
-
-	* win32/Makefile.sub: ditto.
-
-	* win32/win32.c: ditto.
-
-	* ext/tk/extconf.rb: ditto.
-
-	* lib/fileutils.rb: ditto.
-
-	* test/fileutils/test_fileutils.rb: ditto.
-
-	* wince/*: removed.
-
-Sat Oct  4 22:35:06 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports MacOS 9 or before.
-
-	* eval.c: ditto.
-
-	* eval_intern.h: ditto.
-
-	* ext/extmk.rb: ditto.
-
-	* ext/tk/sample/tkextlib/treectrl/demo.rb: ditto.
-
-	* ext/tk/stubs.c: ditto.
-
-	* file.c: ditto.
-
-	* hash.c: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* ruby.c: ditto.
-
-	* signal.c: ditto.
-
-	* vm_core.h: ditto.
-
-Sat Oct  4 22:30:28 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports MS-DOS.
-
-	* ext/sdbm/_sdbm.c: ditto.
-
-	* ext/sdbm/sdbm.h: ditto.
-
-	* gc.c: ditto.
-
-	* hash.c: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* include/ruby/util.h: ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* strftime.c: ditto.
-
-	* util.c: ditto.
-
-Sat Oct  4 22:14:15 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* djgpp/GNUmakefile.in: removed. Ruby no longer supports djgpp.
-
-	* djgpp/README.djgpp: ditto.
-
-	* djgpp/config.hin: ditto.
-
-	* djgpp/config.sed: ditto.
-
-	* djgpp/configure.bat: ditto.
-
-	* djgpp/mkver.sed: ditto.
-
-	* ext/Setup.dj: ditto.
-
-	* dln.c: removed djgpp supports.
-
-	* file.c: ditto.
-
-	* gc.c: ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* signal.c: ditto.
-
-	* util.c: ditto.
-
-	* vm_core.h: ditto.
-
-	* lib/fileutils.rb: ditto.
-
-	* lib/mkmf.rb: ditto.
-
-	* ext/socket/socket.c: ditto.
-
-	* test/fileutils/test_fileutils.rb: ditto.
-
-	* test/ruby/test_env.rb: ditto.
-
-	* test/ruby/test_path.rb: ditto.
-
-Sat Oct  4 21:59:39 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* x68/_dtos18.c: removed. Ruby no longer supports human68k.
-
-	* x68/_round.c: ditto.
-
-	* x68/fconvert.c: ditto.
-
-	* x68/select.c: ditto.
-
-	* ext/Setup.x68: ditto.
-
-	* missing/x68.c: ditto.
-
-	* dln.c (dln_find_exe_r): removed human68k supports.
-	  (dln_find_1): ditto.
-
-	* lib/mkmf.rb: ditto.
-
-	* ext/extmk.rb (Init_ext): ditto.
-
-	* ext/socket/socket.c (init_sock): ditto.
-
-	* gc.c (GC_MALLOC_LIMIT): ditto.
-	  (rb_setjmp, rb_jmpbuf): ditto.
-	  (mark_current_machine_context): ditto.
-
-	* include/ruby/defines.h (PATH_ENV): ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* test/ruby/test_env.rb: ditto.
-
-	* test/ruby/test_path.rb: ditto.
-
-	* LEGAL
-
-Sat Oct  4 19:02:36 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: no need to require the "lib/rational.rb".
-
-Sat Oct  4 19:02:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): don't replicate encoding.
-	  [ruby-dev:36575]
-
-Sat Oct  4 18:47:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_external_encoding): defined.
-
-	* ext/stringio/stringio.c (strio_internal_encoding): defined.
-
-	* ext/stringio/stringio.c (Init_stringio): define above.
-
-Sat Oct  4 15:52:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/mini/test_mini_test.rb: recovered.
-	  It had been temporarily removed at r19645.
-
-	* test/mini/test_mini_mock.rb: ditto.
-
-	* test/mini/test_mini_spec.rb: ditto.
-
-	* lib/test/**/*: replaced by miniunit.
-	  miniunit had been temporarily reverted at r19643 but
-	  now recovered.
-
-Sat Oct  4 15:33:26 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (gdb-ruby): new target. it runs ruby under controlled by
-	  gdb.
-
-	* common.mk (dist): accepts RELNAME variable as the second argument of
-	  make-snapshot.rb.
-
-Sat Oct  4 12:17:46 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/irb/ext/save-history.rb: change load_history using File.expand_path. see [ruby-dev:36660]. Thanks Kouhei Sutou.
-	* lib/irb/irb/context.rb: convert string Symbol of instance variable names in IRB:Context#inspect.
-
-Fri Oct  3 22:43:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/extconf.rb ($distcleanfiles): added callback-?.c into
-	  the distclean list.
-
-Fri Oct  3 19:33:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure.rb (module JSON): remove Iconv dependency.
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json): process as
-	  binary and remove Iconv dependency.
-
-	* ext/json/lib/json/pure/parser.rb (parse_string): ditto.
-
-Fri Oct  3 14:04:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{configure.bat,setup.mak,Makefile.sub): add --program-prefix
-	  configure option support.
-
-Thu Oct  2 21:22:43 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::QueryExtension): delete MorphingBody
-	  and replace like as 1.8's in multipart reading.
-		see [ruby-dev:36443],
-	  reference from CGIAlt http://cgialt.rubyforge.org/
-
-	* test/cgi/test_cgi_multipart.rb : fixed multipart test.
-
-Thu Oct  2 20:46:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_sub_bang): fix coderange.
-
-Wed Oct  1 22:54:09 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/parsers/lightparser.rb, lib/debug.rb: remove unused when
-	  clauses.
-
-Wed Oct  1 22:43:59 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/xmlrpc, lib/rexml, test/ruby/test_array.rb,
-	  test/ruby/test_unicode_escape.rb, test/scanf/test_scanf.rb,
-	  test/rss/rss-assertions.rb: fix indentation to remove warning.
-
-Wed Oct  1 21:36:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): finalize deferred IO and Data.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): defers IO finalization.
-	  [ruby-dev:36646]
-
-Wed Oct  1 19:11:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (marshal_dump): fixed for check_dump_arg.
-
-	* marshal.c (marshal_dump): initializes dump_arg before any funcall.
-	  [ruby-dev:36648]
-
-Wed Oct  1 00:54:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_split_m): should use rb_str_subseq() which use
-	  offset and length by bytes.  [ruby-dev:36641]
-
-Wed Oct  1 00:29:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb (test_call, test_class): line number
-	  was changed at r19592.
-
-Wed Oct  1 00:20:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (check_exec_redirect): don't depend on rb_stdout and
-	  rb_stderr.
-
-Tue Sep 30 23:06:58 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/mini/test_mini_test.rb: removed.
-	  Temporarily removed the tests for miniunit because of
-	  they depend on the miniunit version of test/unit,
-	  where test/unit was temporarily reverted to the state
-	  before importing miniunit.
-
-	* test/mini/test_mini_mock.rb: ditto.
-
-	* test/mini/test_mini_spec.rb: ditto.
-
-Tue Sep 30 23:04:30 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/test/**/*: recovered.
-	  Temporarily reverts the changes of lib/test/unit/* in
-	  r19502 and r19501, in order to release 1.9.0-5.
-
-Tue Sep 30 23:00:05 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/test/unit.rb: removed.
-	  Temporarily reverts the changes of lib/test/unit/* in
-	  r19543, r19534 and r19503, in order to release 1.9.0-5.
-
-	* lib/test/unit/assertions.rb: ditto.
-
-	* lib/test/unit/deprecate.rb: ditto.
-
-	* lib/test/unit/error.rb: ditto.
-
-	* lib/test/unit/testcase.rb: ditto.
-
-Tue Sep 30 20:17:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_modeenc): should honor value of the
-	  textmode: and binmode: options.
-
-Tue Sep 30 17:04:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (test_sqrt_bigdecimal): wrong
-	  precision specification.  a patch from TAKANO Mitsuhiro
-	  <takano32 at jus.or.jp> in [ruby-dev:36634].
-
-Tue Sep 30 16:53:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): returns non zero.  [ruby-dev:36633]
-
-Tue Sep 30 16:52:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): add %<name>s style named argument
-	  support.  a patch from Yusuke Endoh <mame at tsg.ne.jp>
-	  in [ruby-dev:35851].
-
-	* sprintf.c (rb_str_format): add gettext style named format
-	  (%{name}) support.  inspired by [ruby-dev:35852].
-
-	* sprintf.c (GETNAMEARG): should raise KeyError exception when no
-	  named argument found.
-
-	* hash.c (rb_hash_fetch): export fetch function.
-
-Tue Sep 30 13:19:01 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rubygems/test_gem_installer.rb: remove extra call to setup to
-	  fix ENV['HOME'] pollution.
-
-Tue Sep 30 13:04:11 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/mini/test.rb: Updated to 1.3.0 r4257.
-	* test/mini/*: added from r4257.
-
-Tue Sep 30 07:46:07 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rdoc/test_rdoc_markup_attribute_manager.rb: Test with clean
-	  SPECIALS.
-	* test/rubygems/gemutilities.rb: Restore ENV['HOME'] after test.
-	* test/runner.rb: Pass -n argument down to miniunit.
-
-Tue Sep 30 01:02:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (token_info_push, token_info_pop): do nothing for evaled
-	  source.
-
-Tue Sep 30 00:47:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: constified.
-
-Mon Sep 29 23:32:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_subseq): don't use rb_str_drop_bytes for short
-	  string.
-
-Mon Sep 29 22:54:29 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/mathn.rb: added String#to_[rc].  moved def_canon.
-
-Mon Sep 29 20:41:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_subseq): use rb_str_drop_bytes if possible.
-
-Mon Sep 29 20:22:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: imported additional tests and some adjustments.
-
-Mon Sep 29 20:13:05 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fev_initialize): initialization
-	  handler instance variable.
-
-	* test/win32ole/test_win32ole_typelib.rb (test_s_typelibs):
-	  fix the warning of shadowing outer local variable.
-
-Mon Sep 29 19:59:00 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (rescue_callback): use rb_write_error
-	  instead of fprintf.
-
-Mon Sep 29 01:51:54 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_info_formatting.rb (teardown): delete tmpdir for
-	  test.
-
-Mon Sep 29 00:30:20 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb (CGI::HtmlExtension::{radio_group, checkbox_group}):
-	can specify the false as checked or selected value.
-	[ruby-core:18306], [ruby-core:18307]
-
-	* test/cgi/test_cgi_tag_helper.rb: add a test.
-
-Sun Sep 28 23:08:38 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb (CGI::HtmlExtension::popup_menu):
-	fix the calls #bytesize on array parameters. [ruby-core:18919]
-
-Sun Sep 28 22:44:26 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::parse): ignore illegal query params.
-	[ruby-dev:36618]
-
-Sun Sep 28 22:05:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_set_sequence): check duplicated when clause.
-	  [ruby-dev:36616]
-
-Sun Sep 28 19:04:03 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: imported a date test suite ruby 1.9 limited ed.
-
-Sun Sep 28 18:40:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mini/test.rb (MINI_DIR): loaded path is expanded.
-
-	* lib/mini/test.rb (assert_match): get rid of confusion of
-	  ruby-mode.el.
-
-Sun Sep 28 12:36:09 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_exec.c (vm_exec_core): add an UNLIKELY() hint.
-
-	* vm_insnhelper.h (BASIC_OP_UNREDEFINED_P): add a LIKELY() hint.
-
-Sun Sep 28 12:04:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_new): sets empty string to coderange 7bit.
-	  [ruby-core:18993]
-
-Sun Sep 28 09:39:48 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/mathn.rb ({Fixnum,Bignum,Float}#**): may produce complex
-	  value.
-
-Sun Sep 28 09:05:53 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Worked around some minor encoding changes in Ruby
-	  pointed out by Nobu.
-
-Sun Sep 28 08:37:12 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/mathn.rb: a hack to provide canonicalization.  This must be
-	  temporary, but this seems to be not bad for the time being.
-
-Sat Sep 27 06:22:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Module#rake_extension, String#ext, String#pathmap): use
-	  built-in methods.
-
-	* lib/rake.rb (String#pathmap): fixed typo in rdoc.
-
-Sat Sep 27 04:28:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rmext): preceding dots are not a part of extension.
-
-	* file.c (rb_file_s_extname): ditto.
-
-Sat Sep 27 03:15:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_jump_tag_but_local_jump): exc is not used if val is nil.
-
-Sat Sep 27 03:12:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (host_str): numeric address should be unsigned.
-	  [ruby-core:18971]
-
-Fri Sep 26 22:46:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (primary, brace_block): fix for line number.
-
-	* proc.c (rb_proc_location, rb_method_location): new methods
-	  {Proc,Method,UnboundMethod}#source_location.  [ruby-core:18452]
-
-Fri Sep 26 21:36:33 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h (RUBY_VM_CHECK_INTS_TH): add an UNLIKELY hint.
-
-Fri Sep 26 19:33:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_str_encode): renamed from
-	  rb_str_transcode.  [ruby-dev:36593]
-	  (rb_econv_has_convpath_p): renamed from rb_transcode_convertible.
-
-	* transcode.c: follow the renaming.
-
-	* io.c: ditto.
-
-Fri Sep 26 19:01:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (test_inspect): fixed CPU bit
-	  size dependent test.  pointed out by TAKANO Mitsuhiro <takano32 AT
-	  jus.or.jp>.
-
-Fri Sep 26 18:57:33 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/pathname/test_pathname.rb: Fix use of deprecated methods.
-
-Fri Sep 26 18:39:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (dist): nothing is needed to run BASERUBY.
-
-	* tool/make-snapshot: new option -archname.
-
-Fri Sep 26 18:24:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el: safe customizable variables.
-
-Fri Sep 26 17:37:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* include/ruby/ruby.h (rb_mPrecision): removed.
-	  Precision module was temporarily removed at r19430.
-
-Fri Sep 26 17:25:10 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (dist): Changed its dependencies and action.
-
-Fri Sep 26 17:07:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* error.c (Init_syserr): moved to the template.
-	  (errno_missing): removed. fixed [ruby-dev:35958].
-
-	* defs/known_errors.def: added. extracted from Init_syserr.
-
-	* templates/known_errors.inc.tmpl: added. Template for Init_syserr.
-	  c.f. [ruby-dev:35958].
-
-	* tools/generic_erb.rb: added. general purpose mapper which maps
-	  data+template into source code.
-
-	* common.mk (error.$(OBJEXT), incs, known_errors.inc):
-	  Fixed dependencies.
-
-Fri Sep 26 17:02:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thlist_signal): clears the woken thread if nothing woke.
-
-	* thread.c (rb_barrier_wait): achieves the lock if no thread was
-	  waiting yet.
-
-Fri Sep 26 12:04:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c: should include <ruby/io.h>.
-
-	* ext/io/wait/wait.c: ditto.
-
-	* ext/openssl/ossl.h: ditto.
-
-Fri Sep 26 11:34:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* variable.c (rb_define_hooked_variable): cast to get rid of compiler
-	  warnings.
-
-Fri Sep 26 11:05:41 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode.c, include/ruby/encoding.c (rb_transcode_convertible):
-	  new function. checking the existence of converter.
-
-Fri Sep 26 10:35:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (global_variable, struct trace_var): made function
-	  members more strict.
-
-Fri Sep 26 09:55:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby{io,sig}.h: moved to include/ruby/backward.
-
-Fri Sep 26 09:47:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/rubysig.h: old macros for backward compatibility.
-
-	* thread.c (BLOCKING_REGION): rewritten using helper functions.
-
-Fri Sep 26 03:03:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (Init_vm_eval): define module_eval, class_eval and eval
-	  here for rdoc.
-
-Fri Sep 26 00:40:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* range.c (range_inspect): fix SEGV for cyclic range object.
-	  [ruby-core:18835]
-
-Thu Sep 25 23:59:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependency updated.
-
-Thu Sep 25 21:46:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_eUndefinedConversionError): renamed from
-	  rb_eConversionUndefinedError.
-	  (rb_eConverterNotFoundError): renamed from rb_eNoConverterError.
-
-Thu Sep 25 21:23:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_pack, pack_unpack): 'm0' format (base64) complies with
-	  RFC 4648.  It adds no line feed when encoding, and raise ArgumentError
-	  if the encoded string contains non-alphabet (including CR and LF).
-
-	* lib/base64.rb: added.  This provides encoding/decoding method for
-	  Base64 in standard RFC 2045, Base64 in standard RFC 4648 and ``Base 64
-	  Encoding with URL and Filename SafeAlphabet'' in RFC 4648.
-
-	* test_pack.c, test/base64/test_base64.rb: add tests for above.
-
-Thu Sep 25 21:00:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: fix btest-* rules [ruby-dev:36528].
-	  and remove obsolete rules.
-
-Thu Sep 25 20:27:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* class.c (rb_make_metaclass): [BUG] Fixed a bus error
-	  on the case for metaclass of a class which includes a
-	  module.
-
-Thu Sep 25 19:34:33 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rubygems/*: Update some new tests to use build_rake_in.
-	* test/rubygems/gemutilities.rb: Fix broken merge of rake detection.
-
-Thu Sep 25 19:13:12 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*: Update to RubyGems 1.3.0 r1891.
-
-Thu Sep 25 18:40:42 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* class.c (rb_make_metaclass): Made class of class of class
-	  from Class into its own eigenclass. Now meta^(n)-class
-	  hierarchy regresses infinitely, again.
-	  (This feature was decided on developer-meeting-20080922.)
-
-Thu Sep 25 16:01:07 2008  Jim Weirich  <jim@tardis.local>
-
-	* lib/rake.rb: Update rake source to version 0.8.3.  This
-	  version includes some fixes for running Rake on windows.
-	  (1) better APPDATA/HOMExxx/USERPROFILE integration for
-	  system rakefiles, (2) Better handling of the :ruby command
-	  when installed in directory containing spaces.
-
-Thu Sep 25 11:22:51 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Update to RDoc 2.2.1 r185.
-
-Thu Sep 25 02:08:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_mode_enc): make it static.
-
-Thu Sep 25 01:22:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mini/test.rb (Mini::Assertions#assert_raise): fixed typo.
-
-Wed Sep 24 23:39:00 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb : revert last change.
-	  ( deprecated is assert_raises. )
-	* test/cgi/test_cgi_core.rb      : ditto.
-	* test/cgi/test_cgi_header.rb    : ditto.
-
-Wed Sep 24 23:12:49 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::new, CGI::{accept_charset,accept_charset=}) :
-	  accept parameters either in a hash,
-	  string as a block. add the encoding validation process.
-	* test/cgi/test_cgi_core.rb : test for query encoding check.
-
-Wed Sep 24 22:58:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): raise exception when the encoding of
-	  the string is dummy.
-
-	* string.c (rb_str_rstrip_bang): remove nul characters even if the
-	  encoding of the string is not single byte optimizable.
-	  fixed [ruby-core:18844], reported by Michael Selig.
-
-Wed Sep 24 19:01:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): workaround for VC++8 x64.
-
-Wed Sep 24 17:44:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (Init_Complex), rational.c (Init_Rational): undefines
-	  default #allocate methods which call the allocator.
-
-Wed Sep 24 17:02:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (Init_Complex), rational.c (Init_Rational): ID_ALLOCATOR
-	  differs from :allocate, and invisible in ruby level.
-
-Wed Sep 24 15:58:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): removing mixed spaces and nuls at
-	  the end of strings.  [ruby-dev:36497]
-
-Wed Sep 24 15:13:04 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb : test for miniunit.
-	* test/cgi/test_cgi_core.rb      : ditto.
-	* test/cgi/test_cgi_header.rb    : ditto.
-
-Wed Sep 24 14:38:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/tmpdir.rb: setup buffer with nul characters instead of spaces.
-	  fixed [ruby-dev:36493]
-
-Wed Sep 24 11:18:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_binread): offset argument was wrongly passed to
-	  internal IO#read call.  [ruby-core:18810]
-
-Wed Sep 24 07:38:23 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm_core.h: ruby/ruby.h should be included at the very first
-	  place in an entire compilation unit, as it includes
-	  ruby/config.h
-
-Wed Sep 24 06:41:24 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/test/*: removed test/unit.
-	* lib/test/*: added miniunit.
-	* lib/mini/*: ditto.
-
-Wed Sep 24 04:45:35 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/node.h, node.h: move node.h from include path.
-	  This change stop to install node.h because of saving ABI
-	  (node.h will be changed. Extensions should not depends on
-	   this file).
-
-	* blockinlining.c, class.c, compile.c, debug.h, enum.c,
-	  gc.c, iseq.c, parse.y, ruby.c, signal.c, variable.c,
-	  vm.c, vm_core.h, vm_dump.c: ditto.
-
-	* ext/ripper/depend: ditto.
-
-Wed Sep 24 04:09:13 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h: remove unused frame values.
-
-Wed Sep 24 04:07:07 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* signal.c (signal_exec): execute rb_eval_cmd() directly.
-
-Wed Sep 24 03:08:58 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/uri/mailto.rb: fix indentation.
-	* lib/uri/generic.rb: ditto.
-	* lib/yaml.rb: ditto.
-	* lib/uri/cgi/core.rb: fix indentation and ambiguous argument warning.
-
-Tue Sep 23 23:39:25 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Improved the idea of whitespace and word characters used
-	  in substitutions during header conversion as suggested by Michael Selig.
-
-Tue Sep 23 21:50:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): allocate wbuf if nosync.
-
-Tue Sep 23 21:45:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): use io_binwrite instead of io_fwrite.
-
-Tue Sep 23 21:31:16 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_rational2.rb: updated.
-
-	* test/ruby/test_complex2.rb: added.
-
-	* test/ruby/test_complexrational.rb: added.
-
-Tue Sep 23 21:26:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_casecmp): make the ordering consistent with
-	  String#<=>.
-
-Tue Sep 23 20:52:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): add nosync argument.
-	  (do_writeconv): extracted from io_fwrite.
-	  (io_fwrite): add nosync argument.  use do_writeconv.
-	  (io_write): add nosync argument.
-	  (io_write_m): new function for IO#write.
-	  (rb_p): don't append record separator.
-
-Tue Sep 23 20:24:41 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* signal.c (signal_exec): fix to use rb_proc_call().
-
-Tue Sep 23 20:06:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/formatters/pretty.rb (REXML::Formatters::Pretty#wrap):
-	  abandon wrapping if the line contains no space.  [ruby-dev:36045]
-
-Tue Sep 23 19:38:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (subtract): check tv_sec. reported by ko1.
-
-Tue Sep 23 19:21:03 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_canonicalize_internal): does no apply
-	  canonicalization rule anymore.
-
-	* rational.c (nurat_s_canonicalize_internal(_no_reduce)?): ditto.
-
-	* complex.c: removed class method new! and new.
-
-	* rational.c: ditto.
-
-Tue Sep 23 19:20:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_binread): a new method to read binary chunk from a
-	  file.  [ruby-core:18674]
-
-	* io.c (open_key_args): wrong permission specified for read-open.
-
-Tue Sep 23 18:24:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* hash.c (rb_obj_is_proc): declaration moved for rdoc.
-
-Tue Sep 23 18:07:55 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk (io.o): remove dependency for vm_core.h.
-
-Tue Sep 23 17:56:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_blocking_region): fix typo in a document.
-
-Tue Sep 23 17:50:35 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_blocking_region): write a document.
-
-Tue Sep 23 17:14:31 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c, include/ruby/intern.h (rb_thread_interrupted): added.
-
-	* io.c: use VALUE of thead instead of rb_tread_t to check interrupts.
-
-Tue Sep 23 17:05:14 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* class.c, vm_core.h: move decl of rb_iseq_clone() to class.c.
-
-Tue Sep 23 17:02:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* debug.h (ruby_set_debug_option): declared.
-
-	* main.c: include debug.h.
-
-	* common.mk (main.$(OBJEXT)): dependency updated.
-
-Tue Sep 23 16:59:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (ENVMATCH, ENVNMATCH): reduced same code.
-
-Tue Sep 23 16:55:11 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.h: fix comment and rename macro HAVE_RUBY_MVM_H to
-	  HAVE_RUBY_VM_H.
-
-Tue Sep 23 16:41:31 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/node.h, vm_core.h: move definition of
-	  RUBY_VM_METHOD_NODE to node.h.
-
-	* class.c, common.mk: remove useless inclusion.
-
-	* compile.h, iseq.h, vm_core.h: rename compile.h to iseq.h.
-	  move some definitions from vm_core.h to iseq.h.
-
-	* compile.c, iseq.c, vm.c: ditto.
-
-	* eval.c, compile.c: move some functions for parser
-	  from eval.c to compile.c.
-
-	* eval_intern.h, vm_core.h: move va_init_list() macro to
-	  vm_core.h.
-
-	* iseq.c (rb_iseq_new_top, rb_iseq_first_lineno): added.
-
-	* load.c, ruby.c: use rb_iseq_new_top() instead of
-	  rb_iseq_new() with ISEQ_TYPE_TOP constant directly.
-
-	* proc.c: use rb_iseq_first_lineno() instead of accessing
-	  iseq structure.
-
-Tue Sep 23 16:17:54 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/ripper/eventids2.c (token_to_eventid): supper __ENCODING__
-	  keyword.  [ruby-dev:36478]
-
-Tue Sep 23 15:30:53 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk, hash.c: remove unused inclusion.
-
-Tue Sep 23 09:52:07 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_safe.c, safe.c: rename eval_safe.c to safe.c.
-
-	* common.mk, eval.c, safe.c, inits.c: separate safe.c from eval.c and
-	  make Init_safe().
-
-Tue Sep 23 09:20:00 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: clean up
-	  - remove blockinlining.$(OBJEXT) to built
-	  - make ENCODING_H_INCLDUES variable (include/ruby/encoding.h)
-	  - make VM_CORE_H_INCLUDES variable (vm_core.h)
-	  - simplify rules.
-	  - make depends rule to output depend status using gcc -MM.
-
-	* include/ruby/mvm.h, include/ruby/vm.h: rename mvm.h to vm.h.
-
-	* include/ruby.h: ditto.
-
-	* load.c: add inclusion explicitly.
-
-	* enumerator.c, object.c, parse.y, thread.c, vm_dump.c:
-	  remove useless inclusion.
-
-	* eval_intern.h: cleanup inclusion.
-
-	* vm_core.h: rb_thread_t should be defined in this file.
-
-	* vm_evalbody.c, vm_exec.c: rename vm_evalbody.c to vm_exec.c.
-
-	* vm.h, vm_exec.h: rename vm.h to vm_exec.h.
-
-	* insnhelper.h, vm_insnhelper.h: rename insnhelper.h to vm_insnhelper.h.
-
-	* vm.c, vm_insnhelper.c, vm_insnhelper.h:
-	  - rename vm_eval() to vm_exec_core().
-	  - rename vm_eval_body() to vm_exec().
-	  - cleanup include order.
-
-	* vm_method.c: fix comment.
-
-Tue Sep 23 09:01:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/pathname.rb (each_filename): return Enumerator if no block
-	  given.
-
-	* test/pathname/test_pathname.rb: add a test for above.
-
-Tue Sep 23 08:25:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (env_aset): allow nil value to remove an entry.
-	  [ruby-dev:36465]
-
-	* test/ruby/test_env.rb (TestEnv#test_aset): test updated.
-
-Tue Sep 23 08:07:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-keyword-end-re): emacs21 support.  a
-	  patch from Hiroshi Moriyama <hiroshi at kvd.biglobe.ne.jp> in
-	  [ruby-dev:36471].
-
-	* misc/ruby-mode.el (ruby-in-ppss-context-p): ditto.
-
-	* misc/ruby-mode.el (ruby-here-doc-end-syntax):
-
-Tue Sep 23 02:07:52 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline_history.rb
-	  (Readline::TestHistory#test_each): checked return value.
-
-Tue Sep 23 02:05:34 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c (Init_readline): used remove_history to
-	  check offset of history if unsupported clear_history.
-
-Mon Sep 22 17:39:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#open): should return a value from the
-	  block (if given).   [ruby-core:18394]
-
-Mon Sep 22 11:17:51 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* include/ruby/encoding.h (enum): ISO C forbids comma at end of
-	  enumerator list
-
-Mon Sep 22 10:15:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* LEGAL: updated file names removed and added.  [ruby-dev:36426]
-
-Mon Sep 22 02:39:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (get_default_external): add description.
-
-Sun Sep 21 21:52:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* math.c (math_log): should check argc.
-
-Sun Sep 21 21:20:24 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: added two macros.
-
-	* rational.c: ditto.
-
-Sun Sep 21 18:06:38 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): checks argc.
-
-	* rational.c (nurat_s_convert): ditto.
-
-Sun Sep 21 10:19:04 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_canonicalize_internal): checks exactness of
-	  imag only.
-
-	* rational.c (nurat_s_convert): accepts non real value
-	  (Rational(a,b) as a/b).
-
-	* complex.c (nucomp_s_convert): refined.
-
-Sun Sep 21 09:37:57 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Reworked CSV's parser and generator to be m17n.  Data
-	  is now parsed in the Encoding it is in without need for translation.
-	* lib/csv/csv.rb:  Improved inspect() messages for better IRb support.
-	* lib/csv/csv.rb:  Fixed header writing bug reported by Dov Murik.
-	* lib/csv/csv.rb:  Use custom separators in parsing header Strings as
-	  suggested by Shmulik Regev.
-	* lib/csv/csv.rb:  Added a :write_headers option for outputting headers.
-	* lib/csv/csv.rb:  Handle open() calls in binary mode whenever we can to
-	  workaround a Windows issue where line-ending translation can cause an
-	  off-by-one error in seeking back to a non-zero starting position after
-	  auto-discovery for :row_sep as suggested by Robert Battle.
-	* lib/csv/csv.rb:  Improved the parser to fail faster when fed some forms
-	  of invalid CSV that can be detected without reading ahead.
-	* lib/csv/csv.rb:  Added a :field_size_limit option to control CSV's
-	  lookahead and prevent the parser from biting off more data than
-	  it can chew.
-	* lib/csv/csv.rb:  Added readers for CSV attributes:  col_sep(), row_sep(),
-	  quote_char(), field_size_limit(), converters(), unconverted_fields?(),
-	  headers(), return_headers?(), write_headers?(), header_converters(),
-	  skip_blanks?(), and force_quotes?().
-	* lib/csv/csv.rb:  Cleaned up code syntax to be more inline with
-	  Ruby 1.9 than 1.8.
-
-Sun Sep 21 07:43:16 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: an instance method image has been removed and
-	  uses "imag" instead of "image".
-
-	* complex.c: two instance method re and im are removed.
-
-	* rational.c: follows the above changes.
-
-	* include/ruby/ruby.h: ditto.
-
-	* gc.c: ditto.
-
-	* lib/cmath.rb: ditto.
-
-	* lib/mathn.rb: ditto.
-
-	* lib/complex.rb: ditto. and provides some obsolete methods.
-
-Sun Sep 21 02:48:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/ext/parser/parse.c: use ruby_xfree().
-
-	* ext/json/ext/parser/parse.rl: ditto.
-
-	* ext/json/ext/parser/unicode.c: ditto.
-
-Sun Sep 21 02:40:20 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: import JSON v 1.1.3.
-
-Sat Sep 20 11:43:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/optparse.rb (summarize): separator "" should output new line.
-
-Sat Sep 20 08:07:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y: strings which contain only US-ASCII don't force to have
-	  US-ASCII encoding. [ruby-dev:36400]
-
-Sat Sep 20 07:59:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_desc): Regexps of ASCII Compatible encoding may
-	  contain non-ASCII characters. So in that case its encoding
-	  must keep original encoding.
-
-Sat Sep 20 07:44:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: prec.c is removed.
-
-Fri Sep 19 22:37:25 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: uses f_(in)?exact_p macro.
-
-	* rational.c: ditto.
-
-	* bignum.c (rb_big_pow): bignum**bignum - should calculate without
-	  rational.
-
-	* lib/complex.rb: should override Math module at most once.
-
-	* lib/mathn.rb: requires 'cmath' directly.
-
-Fri Sep 19 20:48:06 2008  Yuki Sonoda  <yugui@yugui.jp>
-
-	* prec.c: removed. Precision will be redesigned and be back again.
-	  c.f. [ruby-dev:36352].
-
-	* common.mk (COMMON_OBJS): removed prec.o.
-
-	* inits.c (rb_call_inits): removed Init_Precision.
-
-	* numeric.c (Init_Numeric): removed inclusion of Precision.
-	  removed #induced_from from each class.
-
-	* rational.c: ditto.
-
-	* ext/bigdecimal/bigdecimal.c: ditto.
-
-	* lib/rdoc/known_classes.rb: removed the entry for Precision.
-
-	* test/ruby/test_prec.rb: removed.
-
-	* test/ruby/test_integer.rb: removed tests for Precision.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-	* test/ruby/test_float.rb: ditto.
-
-	* test/ruby/test_rational.rb: ditto.
-
-	* test/ruby/test_complex.rb: ditto.
-
-	* test/bigdecimal/test_bigdecimal.rb: ditto.
-
-Fri Sep 19 19:43:40 2008  Yuki Sonoda  <yugui@yugui.jp>
-
-	* common.mk : Reverts the changeset 18994.
-	  Uses the official repository of rubyspec again.
-
-Fri Sep 19 17:41:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: applied OS/2 support patch from Brendan Oakley
-	  <gentux2 at gmail.com> in [ruby-core:18707].
-
-Fri Sep 19 09:29:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dln.c: newer BeOS support.  a patch from Pete Goodeve
-	  <pete.goodeve at computer.org> in [ruby-core:18712].
-
-Fri Sep 19 03:41:25 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: fix memory violation. mentioned by mame [ruby-dev:36373]
-
-Fri Sep 19 01:07:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* regexec.c (string_cmp_ic): add text_end argument.
-	  (slow_search): call enclen with real string end.
-	  (map_search): add text_end argument.
-
-Thu Sep 18 22:54:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/openssl/ossl_pkey_ec.c (ossl_ec_key_to_string): comment out
-	  fragments of unused code.
-
-Thu Sep 18 22:35:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpCtoV): 1E1000...000 is interpreted as
-	  Infinity.  [ruby-dev:36159]
-
-	* ext/bigdecimal/bigdecimal.c (VpPower): Infinity ** 1 returns
-	  Infinity instead of NaN.  [ruby-dev:36159]
-
-	* test/bigdecimal/test_bigdecimal.rb: add tests for above.
-
-Thu Sep 18 22:20:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (Init_Exception): introduce EncodingError which is a
-	  superclass for all encoding related exception classes,
-	  e.g. Encoding::CompatibilityError.  [ruby-dev:36371]
-
-	* transcode.c (Init_transcode): ditto.
-
-Thu Sep 18 21:57:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): make ascii8bit string to be
-	  compatible with any other encoding.
-
-	* string.c (rb_str_cmp): use rb_str_comparable() instead of
-	  rb_enc_compatible() since <=> is a comparison anyway.
-
-Thu Sep 18 21:37:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* grapheme cluster implementation reverted.  [ruby-dev:36375]
-
-Thu Sep 18 20:50:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Rake::Application#standard_exception_handling):
-	  replaced magic numbers for exit status.
-
-Thu Sep 18 20:37:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::ParseError#set_backtrace): omits
-	  OptionParser internal backtraces unless debug flag is set.
-
-Thu Sep 18 20:02:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/uri/common.rb (unescape): skip '%' to make String#hex work
-	  correctly.
-
-Thu Sep 18 19:51:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (big2str_karatsuba): free internal buffer eagerly.
-	  a patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com>
-	  in [ruby-dev:36217].
-
-	* bignum.c (rb_big2str0): ditto.
-
-Thu Sep 18 19:43:04 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* st.c (new_size): raise RuntimeError when st_table is too big.
-	  [ruby-dev:36354]
-
-Thu Sep 18 18:23:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (enc_arg): must take pointer argument to avoid GC
-	  problem.  StringValueCStr modifies the argument and it should be
-	  preserved while the string StringValueCStr returns is used.
-	  Since the string is used by caller, the modified argument should be
-	  hold by caller.  Actually
-	    GC.stress = true
-	    def (o=Object.new).to_str()
-	      "universal"+"_newline"
-	    end
-	    "\u3042".encode(o, "")
-	  causes curious warning:
-	    rb_define_const: invalid name `' for constant
-
-Thu Sep 18 17:32:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c: add "Error" suffix for Encoding exception classes.
-	  a patch from Tadashi Saito <shiba at mail2.accsnet.ne.jp> in
-	  [ruby-dev:36346].
-
-	* encoding.c (Init_Encoding): rename EncodingCompatibilityError to
-	  Encoding::CompatibilityError.  [ruby-dev:36366]
-
-Thu Sep 18 17:18:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (enc_arg): revert last change.  too early exception
-	  raising.
-
-	* transcode.c (enc_arg): need not to take pointer argument.
-
-Sun Sep 18 02:22:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/bigdecimal/test_bigdecimal.rb: add tests to achieve over 90%
-	  test coverage of bigdecimal.
-
-Wed Sep 17 21:50:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_casecmp): don't use rb_enc_codepoint.
-
-Wed Sep 17 19:55:33 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): accepts complex
-	  value (Complex(a,b) as a+bi).
-
-Wed Sep 17 19:16:47 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): avoid infinite loop.
-	  [ruby-dev:36326]
-
-	* test/ruby/test_io.rb (TestIO#test_dup): remove needless open.
-	  [ruby-dev:35957]
-
-Wed Sep 17 17:44:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_modeenc): process option mode: and perm: as
-	  well.
-
-	* io.c (open_key_args): move mode: and perm: related code to
-	  rb_io_extract_modeenc().
-
-Wed Sep 17 13:42:59 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb (checkbox_group,radio_group): bug fix
-	  use size instead of	bytesize.
-
-	* test/cgi/test_cgi_tag_helper.rb: test for checkbox_group,radio_group.
-
-Wed Sep 17 06:58:31 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: provides predicate real? instead of scalar?.
-
-	* complex.c: follows the above change.
-
-	* lib/cmath.rb: ditto.
-
-Wed Sep 17 01:56:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io_m17n.rb: use __FILE__ instead of /dev/null.
-	  [ruby-dev:36327]
-
-Wed Sep 17 01:33:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add precise_ret
-	  argument for mbc_to_code.
-	  (ONIGENC_MBC_TO_CODE): provide NULL for precise_ret.
-	  (ONIGENC_MBC_PRECISE_CODEPOINT): defined.
-
-	* include/ruby/encoding.h (rb_enc_mbc_precise_codepoint): defined.
-
-	* regenc.h (onigenc_single_byte_mbc_to_code): precise_ret argument
-	  added.
-	  (onigenc_mbn_mbc_to_code): ditto.
-
-	* regenc.c (onigenc_single_byte_mbc_to_code): precise_ret argument
-	  added.
-	  (onigenc_mbn_mbc_to_code): ditto.
-
-	* string.c (count_utf8_lead_bytes_with_word): removed.
-	  (str_utf8_nth): removed.
-	  (str_utf8_offset): removed.
-	  (str_strlen): UTF-8 codepoint oriented optimization removed.
-	  (rb_str_substr): ditto.
-	  (enc_succ_char): use rb_enc_mbc_precise_codepoint.
-	  (enc_pred_char): ditto.
-	  (rb_str_succ): ditto.
-
-	* encoding.c (rb_enc_ascget): check length with
-	  rb_enc_mbc_precise_codepoint.
-	  (rb_enc_codepoint): use rb_enc_mbc_precise_codepoint.
-
-	* regexec.c (string_cmp_ic): add text_end argument.
-	  (match_at): check end of character after exact string matches.
-
-	* enc/utf_8.c (grapheme_table): defined for extended grapheme cluster
-	  boundary.
-	  (grapheme_cmp): defined.
-	  (get_grapheme_properties): defined.
-	  (grapheme_boundary_p): defined.
-	  (MAX_BYTES_LENGTH): defined.
-	  (comb_char_enc_len): defined.
-	  (mbc_to_code0): extracted from mbc_to_code.
-	  (mbc_to_code): use mbc_to_code0.
-	  (left_adjust_combchar_head): defined.
-	  (utf_8): use a extended grapheme cluster as a unit.
-
-	* enc/unicode.c (onigenc_unicode_mbc_case_fold): use
-	  ONIGENC_MBC_PRECISE_CODEPOINT to extract codepoints.
-	  (onigenc_unicode_get_case_fold_codes_by_str): ditto.
-
-	* enc/euc_jp.c (mbc_to_code): follow mbc_to_code field change.
-	  use onigenc_mbn_mbc_to_code.
-
-	* enc/shift_jis.c (mbc_to_code): ditto.
-
-	* enc/emacs_mule.c (mbc_to_code): ditto.
-
-	* enc/gbk.c (gbk_mbc_to_code): follow mbc_to_code field and
-	  onigenc_mbn_mbc_to_code change.
-
-	* enc/cp949.c (cp949_mbc_to_code): ditto.
-
-	* enc/big5.c (big5_mbc_to_code): ditto.
-
-	* enc/euc_tw.c (euctw_mbc_to_code): ditto.
-
-	* enc/euc_kr.c (euckr_mbc_to_code): ditto.
-
-	* enc/gb18030.c (gb18030_mbc_to_code): ditto.
-
-	* enc/utf_32be.c (utf32be_mbc_to_code): follow mbc_to_code field
-	  change.
-
-	* enc/utf_16be.c (utf16be_mbc_to_code): ditto.
-
-	* enc/utf_32le.c (utf32le_mbc_to_code): ditto.
-
-	* enc/utf_16le.c (utf16le_mbc_to_code): ditto.
-
-Wed Sep 17 01:17:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (enc_arg): raise exception when unknown encoding is
-	  given.
-
-Tue Sep 16 22:23:24 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI#header): performance improvement.
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-	* test/cgi/test_cgi_header.rb: exception class fixed.
-
-Tue Sep 16 22:21:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_concat): fix rdoc. (codepoint is integer)
-
-	* string.c (rb_str_each_codepoint): use UINT2NUM.
-
-Tue Sep 16 21:48:55 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_desc): Regexp#inspect should be US-ASCII.
-
-Tue Sep 16 21:33:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_crypt): orthodox crypt() sees only first two bytes
-	  of salt.
-
-Tue Sep 16 19:18:40 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_marshal_{dump,load}): preserve instance
-	  variables.
-
-	* rational.c (nurat_marshal_{dump,load}): ditto.
-
-Tue Sep 16 18:28:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_gets_m): rdoc updated.  limit counts in bytes.
-	  [ruby-core:18617]
-
-	* io.c (rb_io_readlines, rb_f_gets): ditto.
-
-	* io.c (rb_io_readbyte): rdoc updated.  [ruby-core:18617]
-
-Tue Sep 16 11:55:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_codepoint): add new methods, #codepoints
-	  and #each_codepoint.  a patch from Michael Selig
-	  <michael.selig at fs.com.au> in [ruby-core:18532].
-
-Tue Sep 16 11:24:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: add new constants.  a patch from
-	  IWAMURO Motonori <deenheart+ruby at gmail.com> in [ruby-dev:36309].
-
-Tue Sep 16 09:20:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): exception should be
-	  raised from IO#dup.
-
-Tue Sep 16 08:35:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): this test might fail if
-	  there are any garbage IO objects.
-
-Tue Sep 16 02:02:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_buf_cat_ascii): codepoint is unsigned int.
-
-	* string.c (rb_str_concat): ditto.
-
-	* string.c (str_cat_char): ditto.
-
-	* string.c (prefix_escape): ditto.
-
-Tue Sep 16 01:47:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (single_byte_optimizable): make function inline.  based
-	  on a patch from Michael Selig <michael.selig at fs.com.au> in
-	  [ruby-core:18532].
-
-	* string.c (str_modify_keep_cr): new function act as
-	  rb_str_modify(), but don't clear coderange
-
-	* string.c (rb_str_casecmp): specialized for single byte strings.
-
-	* string.c (rb_str_splice): preserve coderange.
-
-	* string.c (rb_str_slice_bang, rb_str_reverse_bang,
-	  rb_str_upcase_bang, rb_str_downcase_bang, tr_trans,
-	  rb_str_capitalize_bang, rb_str_swapcase_bang,
-	  rb_str_delete_bang, rb_str_chop_bang, rb_str_chomp_bang,
-	  rb_str_lstrip_bang, rb_str_rstrip_bang): ditto.
-
-	* string.c (rb_str_clear): preset coderange.
-
-	* string.c (rb_str_split_m): specialized for splitting with a
-	  string.
-
-Tue Sep 16 00:57:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_quote): use rb_enc_mbcput to generate ASCII
-	  incompatible characters properly.
-
-Tue Sep 16 00:51:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (Encoding#base_encoding): removed. [ruby-dev:36270]
-
-Tue Sep 16 00:40:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (STR1_LENGTH): defined.
-	  (makeSTR1LEN): defined.
-
-	* tool/transcode-tblgen.rb: use makeSTR1LEN.  generate STR1 for 4 to
-	  259 bytes.
-
-	* transcode.c (rb_transcoding): new field: output_index.
-	  (transcode_restartable0): use STR1_LENGTH.
-
-Mon Sep 15 23:52:45 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c, include/ruby/ruby.h: rename rb_register_mark_object()
-	  to rb_gc_register_mark_object().
-
-	* eval.c, vm.c: initialize vm->mark_object_ary at
-	  Init_top_self().
-
-	* bignum.c, complex.c, encoding.c, ext/win32ole/win32ole.c,
-	  io.c, load.c, marshal.c, rational.c, ruby.c, vm.c:
-	  use rb_gc_register_mark_object() instead of
-	  rb_global_variable() or rb_gc_register_address().
-
-Mon Sep 15 23:37:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_opts): don't use to_sym.
-
-Mon Sep 15 23:28:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_get_index): don't return -1.
-
-	* io.c (rb_scan_open_args): call FilePathValue before encoding
-	  conversion.
-
-Mon Sep 15 22:11:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_squeeze_bang): specialized for 7bit characters in
-	  ASCII compatible strings.
-
-	* string.c (rb_str_count): ditto.
-
-	* string.c (tr_trans): preserve 7bit/valid coderange flag.
-
-	* string.c (rb_str_squeeze_bang): preserve previous coderange value.
-
-	* string.c (rb_str_lstrip_bang): ditto.
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-	* encoding.c (rb_default_external_encoding): preserve
-	  default_external_encoding in a static variable.
-
-	* string.c (single_byte_optimizable): check coderange first, to
-	  reduce number of calling rb_enc_from_index().
-
-Mon Sep 15 20:57:00 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/matrix.rb (Matrix#eql?): fixed [ruby-dev:36298].
-	  Reported by an anonymous user.
-
-	* lib/matrix.rb (Vector#eql?): ditto.
-
-	* (Matrix#compare_by_row_vectors): takes comparison
-	  strategy as an optional parameter.
-
-	* (Vector#compare_by): ditto.
-
-Mon Sep 15 14:34:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (RUBY_MAX_CHAR_LEN): defined.
-
-	* encoding.c (str_cat_char): use RUBY_MAX_CHAR_LEN.
-
-Mon Sep 15 13:53:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): accept other than strings and
-	  regexps. [ruby-core:18595]
-
-	* encoding.c (rb_enc_get_index): works files and encodings.
-
-Mon Sep 15 13:17:21 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_eql_p): new.
-
-	* complex.c (nucomp_hash): should use hash values of the elements.
-
-	* rational.c (nurat_hash): ditto.
-
-	* hash.c (rb_any_cmp): removed an unused variable.
-
-Mon Sep 15 11:11:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): resetsize_func and resetstate_func
-	  also returns ssize_t.
-
-	* enc/trans/iso2022.trans: follow the type change.
-
-Mon Sep 15 10:28:10 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/matrix/test_matrix.rb (setup): typo.
-	  (test_equality): misdefinition of the expected working.
-	  Reported by an anonymous user.
-	  (test_hash): added.
-
-	* test/matrix/test_vector.rb: ditto.
-
-Mon Sep 15 03:33:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h: return output functions ssize_t.
-
-	* transcode.c (transcode_restartable0): don't need to cast the result
-	  of output functions.
-
-	* enc/trans/newline.trans: follow the type change.
-
-	* enc/trans/escape.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-Mon Sep 15 03:04:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h: output function takes output buffer size.
-
-	* transcode.c: give output buffer size for output functions.
-
-	* enc/trans/newline.trans: follow the type change.
-
-	* enc/trans/escape.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-Mon Sep 15 02:37:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (str_encode): returns duplicated string if nothing
-	  changed.  [ruby-core:18578]
-
-Sun Sep 14 22:09:01 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::parse): performance improvement
-
-Sun Sep 14 18:33:32 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: trivial changes.
-
-Sun Sep 14 16:15:22 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/matrix.rb (Vector#eql?): typo of the method name as "eqn?".
-	  (Vector#eqn?): removed. Defined by mistake.
-	  Fixes [ruby-dev:36294]. Reported by weda <weda AT
-	  issp.u-tokyo.ac.jp> and an anonymous user.
-
-	* test/matrix/test_matrix.rb: added.
-
-	* test/matrix/test_vector.rb: added.
-
-Sun Sep 14 16:07:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): associates the locale encoding with $0 as
-	  well as ARGV.
-
-Sun Sep 14 13:48:03 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* object.c (Init_Object): added metameta-class initialization for
-	  BasicObject, Object, and Module.
-	  The metameta-classes of them are now the metaclass of Class, as the
-	  metameta-class of Class is.
-
-	* object.c (boot_defmetametaclass): added.
-
-Sun Sep 14 10:10:43 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (f_{add,mul,sub}): omitted some shortcuts for preserving
-	  signed zero anyway.
-
-	* complex.c (nucomp_negate): new.
-
-Sun Sep 14 04:15:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add end argument for
-	  left_adjust_char_head.
-	  (ONIGENC_LEFT_ADJUST_CHAR_HEAD): add end argument.
-	  (onigenc_get_left_adjust_char_head): ditto.
-
-	* include/ruby/encoding.h (rb_enc_left_char_head): add end argument.
-
-	* regenc.h (onigenc_single_byte_left_adjust_char_head): ditto.
-
-	* regenc.c (onigenc_get_right_adjust_char_head): follow the interface
-	  change.
-	  (onigenc_get_right_adjust_char_head_with_prev): ditto.
-	  (onigenc_get_prev_char_head): ditto.
-	  (onigenc_step_back): ditto.
-	  (onigenc_get_left_adjust_char_head): ditto.
-	  (onigenc_single_byte_code_to_mbc): ditto.
-
-	* re.c: ditto.
-
-	* string.c: ditto.
-
-	* io.c: ditto.
-
-	* regexec.c: ditto.
-
-	* enc/euc_jp.c: ditto.
-
-	* enc/cp949.c: ditto.
-
-	* enc/shift_jis.c: ditto.
-
-	* enc/gbk.c: ditto.
-
-	* enc/big5.c: ditto.
-
-	* enc/euc_tw.c: ditto.
-
-	* enc/euc_kr.c: ditto.
-
-	* enc/emacs_mule.c: ditto.
-
-	* enc/gb18030.c: ditto.
-
-	* enc/utf_8.c: ditto.
-
-	* enc/utf_16le.c: ditto.
-
-	* enc/utf_16be.c: ditto.
-
-	* enc/utf_32le.c: ditto.
-
-	* enc/utf_32be.c: ditto.
-
-Sun Sep 14 03:43:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (ONIGENC_STEP_BACK): add end argument.
-	  (onigenc_step_back): ditto.
-
-	* regenc.c (onigenc_step_back): add end argument.
-
-	* regexec.c: follow the interface change.
-
-Sun Sep 14 03:20:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (onigenc_get_prev_char_head): add end
-	  argument.
-
-	* include/ruby/encoding.h (rb_enc_prev_char): ditto.
-
-	* regenc.c (onigenc_get_prev_char_head): add end argument.
-
-	* regparse.c: follow the interface change.
-
-	* regexec.c: ditto.
-
-	* string.c: ditto.
-
-	* parse.y: ditto.
-
-Sun Sep 14 02:04:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h
-	  (onigenc_get_right_adjust_char_head_with_prev): add end argument.
-
-	* regenc.c (onigenc_get_right_adjust_char_head_with_prev): use end
-	  argument.
-
-	* regexec.c (forward_search_range): follow the interface change.
-
-Sun Sep 14 01:38:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (onigenc_get_right_adjust_char_head): add
-	  end argument.
-
-	* include/ruby/encoding.h (rb_enc_right_char_head): add end argument.
-
-	* regenc.c (onigenc_get_right_adjust_char_head): use end argument.
-
-	* re.c (rb_reg_adjust_startpos): follow the interface change.
-
-	* string.c (rb_str_index): ditto.
-
-	* regexec.c (backward_search_range): ditto.
-	  (onig_search): ditto.
-
-Sun Sep 14 00:43:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/ripper/depend (ripper.o): it depends on ruby headers.
-
-Sat Sep 13 19:27:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_encoding_set): don't need argc argument.
-	  (rb_io_s_pipe): update io_encoding_set call.
-	  (rb_io_set_encoding): ditto.
-
-Sat Sep 13 18:46:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_transcoding): align state field.
-
-Sat Sep 13 18:21:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (DECORATOR_P): renamed from SUPPLEMENTAL_CONVERSION.
-
-Sat Sep 13 18:05:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): use rb_enc_name.
-	  (make_readconv): ditto.
-
-	* transcode.c (rb_econv_open_opts): ditto.
-	  (econv_args): ditto.
-	  (decorate_convpath): ditto.
-	  (econv_set_replacement): ditto.
-
-Sat Sep 13 11:15:38 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/rexml/document.rb: fixed typo.
-
-Sat Sep 13 10:53:13 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: refined.
-
-	* rational.c: ditto.
-
-Sat Sep 13 03:44:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_prepare_opts): raise ArgumentError if
-	  a broken string is specified as a replacement.
-
-Sat Sep 13 03:31:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* iseq.c (iseq_s_compile_file): use rb_file_open_str.
-
-	* io.c (rb_file_open_generic): call validate_enc_binmode.
-	  (rb_file_open_str): call FilePathValue.
-
-Sat Sep 13 02:58:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (validate_enc_binmode): extracted from rb_io_extract_modeenc.
-	  (rb_io_extract_modeenc): use validate_enc_binmode.
-	  (io_encoding_set): call validate_enc_binmode.
-
-Sat Sep 13 02:50:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_prepare_opts): initialize *opt and return 0
-	  if opthash is nil.
-
-Sat Sep 13 02:29:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans: transcoder name renamed to use underscore.
-
-	* transcode.c: follow the renaming.
-
-Sat Sep 13 02:12:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_init_by_convpath_i): new function.
-	  (rb_econv_init_by_convpath): new function.
-	  (econv_init): use rb_econv_init_by_convpath.
-
-Sat Sep 13 01:11:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_args): take snamev_p and dnamev_p to prevent
-	  possible GC problem.
-
-Sat Sep 13 00:38:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (enc_arg): take arg as VALUE * to prevent possible GC
-	  problem.
-
-Fri Sep 12 23:19:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_add_transcoder_at): fix loop condition.
-
-Fri Sep 12 22:39:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (decorator_names): extracted from rb_econv_open.
-	  (rb_econv_open): use decorator_names.
-	  (econv_args): extracted from econv_init.
-	  (econv_init): use econv_args.
-	  (decorate_convpath): new function.
-	  (search_convpath_i): new function.
-	  (econv_s_search_convpath): new method.
-	  (Init_transcode): new method defined.
-
-Fri Sep 12 21:55:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): new field: num_allocated.
-	  (rb_econv_alloc): extracted from
-	  rb_econv_open_by_transcoder_entries.
-	  (rb_econv_add_transcoder_at): extracted from rb_econv_decorate_at
-	  and generalized
-	  (rb_econv_open_by_transcoder_entries): use rb_econv_alloc and
-	  rb_econv_add_transcoder_at.
-	  (rb_econv_add_converter): extracted from rb_econv_decorate_at.
-	  (rb_econv_decorate_at): use rb_econv_add_converter.
-
-
-Fri Sep 12 21:22:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): new field: started.
-	  (rb_econv_open_by_transcoder_entries): initialize started field.
-	  (rb_econv_convert): set started field.
-	  (rb_econv_insert_output): ditto.
-	  (rb_econv_decorate_at): check started field instead of num_finished.
-
-Fri Sep 12 20:28:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* regenc.c (onigenc_single_byte_code_to_mbc): follow OnigEncoding
-	  change.
-
-Fri Sep 12 20:00:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regparse.c (parse_exp): fix resource leak.
-
-Fri Sep 12 01:21:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/node.c (syck_replace_str2): fix wrong check to free ptr.
-
-Thu Sep 11 20:18:24 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_err_in_callback.rb (teardown): get rid
-	  of infinite loop.
-
-Thu Sep 11 19:12:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigCodePoint): unsigned long to unsigned int.
-
-	* include/ruby/encoding.h (rb_enc_codepoint): ditto.
-
-	* encoding.c (rb_enc_codepoint): signed int to unsigned int.
-
-	* encoding.c (rb_enc_ascget): ditto.
-
-	* string.c (rb_str_casecmp): ditto.
-
-	* string.c (enc_succ_alnum_char): ditto.
-
-	* string.c (rb_str_inspect): ditto.
-
-	* string.c (rb_str_upcase_bang): ditto.
-
-	* string.c (rb_str_downcase_bang): ditto.
-
-	* string.c (rb_str_capitalize_bang): ditto.
-
-	* string.c (rb_str_swapcase_bang): ditto.
-
-	* string.c (struct tr): ditto.
-
-	* string.c (trnext): ditto.
-
-	* string.c (tr_trans): ditto.
-
-	* string.c (tr_setup_table): ditto.
-
-	* string.c (tr_find): ditto.
-
-	* string.c (rb_str_delete_bang): ditto.
-
-	* string.c (rb_str_squeeze_bang): ditto.
-
-	* string.c (rb_str_count): ditto.
-
-	* string.c (rb_str_split_m): ditto.
-
-	* string.c (rb_str_each_line): ditto.
-
-	* string.c (rb_str_lstrip_bang): ditto.
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-	* string.c (rb_str_intern): ditto.
-
-	* dir.c (char_casecmp): ditto.
-
-	* sprintf.c (rb_str_format): ditto.
-
-	* enc/emacs_mule.c (mbc_to_code): to be 32bit clean.
-
-	* enc/emacs_mule.c (code_to_mbc): ditto.
-
-	* enc/gb18030.c (mbc_to_code): ditto.
-
-	* enc/gb18030.c (code_to_mbc): ditto.
-
-Thu Sep 11 19:09:25 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/iconv/iconv.c: add attention for machine independent.
-
-Thu Sep 11 15:23:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivrem): adjust length for division and remainder.
-	  a patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in
-	  [ruby-dev:36231].
-
-Thu Sep 11 02:59:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): extracted from io_fwrite.
-
-Thu Sep 11 02:25:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_encoding): new function.
-	  (make_encobj): new function.
-	  (econv_s_asciicompat_encoding): use make_encoding.
-	  (rb_econv_open_exc): use SUPPLEMENTAL_CONVERSION.
-	  (econv_convpath): use encoding object in the result.
-
-Thu Sep 11 02:14:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_convpath): new method.
-
-Wed Sep 10 23:00:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* tool/compile_prelude.rb: print "<internal:prelude>" instead of
-	  "prelude.rb" on stack trace.  [ruby-dev:36129]
-
-Wed Sep 10 21:19:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (big2str_karatsuba): remove unnecessary fixnum code.  a
-	  patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in
-	  [ruby-dev:36217].
-
-Wed Sep 10 21:09:32 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_err_in_callback.rb: InternetExplorer should
-	  be closed.
-
-	* test/win32ole/err_in_callback.rb: ditto.
-
-Wed Sep 10 18:25:19 2008  akira yamada  <akira@rice.p.arika.org>
-
-	* lib/uri/common.rb (URI::Parser): new class.
-
-	* lib/uri/mailto.rb, lib/uri/generic.rb: follow the above change.
-
-	* test/uri/test_parser.rb: added tests for URI::Parser.
-
-Wed Sep 10 10:35:32 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/cookie.rb (CGI::Cookie#to_s): performance improvement
-	  from http://jp.rubyist.net/magazine/?0023-Cgirb.
-
-Wed Sep 10 10:12:29 2008  akira yamada  <akira@arika.org>
-
-	* lib/sync.rb (Sync_m#sync_exclusive): fixed
-	  typo. [ruby-dev:36233] [RubyForge#11680]
-
-Wed Sep 10 01:57:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (StrSet#hash): cache hash value.
-	  (ActionMap#hash): ditto.
-
-Wed Sep 10 01:26:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (econv_after_output): renamed from
-	  econv_output_followed_by_input.
-	  (ECONV_AFTER_OUTPUT): renamed from ECONV_OUTPUT_FOLLOWED_BY_INPUT.
-
-	* transcode.c: follow the renaming.
-
-	* io.c: ditto.
-
-Wed Sep 10 01:16:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (get_replacement_character): don't return ASCII
-	  incompatible replacements.
-	  (make_replacement): don't convert the result of
-	  get_replacement_character.
-
-Wed Sep 10 01:05:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans (rb_universal_newline): swap src_encoding
-	  and dst_encoding.
-
-	* transcode.c (rb_econv_decorate_at): call get_transcoder_entry only
-	  once.
-	  (rb_econv_binmode): follow universal_newline change.
-
-Wed Sep 10 00:01:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): rename field: writeconv_stateless to
-	  writeconv_asciicompat.
-
-	* io.c: follow the renaming.
-
-	* gc.c: ditto.
-
-Tue Sep  9 23:55:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fwrite): raise an error if ASCII incompatible string
-	  written for text mode IO without encoding conversion.
-	  (rb_io_extract_modeenc): binmode requirement changed.
-
-Tue Sep  9 21:59:48 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi*: split cgi.rb into four files. [ruby-dev:36041]
-
-Tue Sep  9 21:17:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_DECORATOR_MASK): merge
-	  ECONV_ENCODER_MASK and ECONV_DECORATOR_MASK.
-	  (ECONV_UNIVERSAL_NEWLINE_DECORATOR): renamed from
-	  ECONV_UNIVERSAL_NEWLINE_DECODER.
-	  (ECONV_CRLF_NEWLINE_DECORATOR): renamed from
-	  ECONV_CRLF_NEWLINE_ENCODER.
-	  (ECONV_CR_NEWLINE_DECORATOR): renamed from ECONV_CR_NEWLINE_ENCODER.
-	  (ECONV_XML_TEXT_DECORATOR): renamed from ECONV_XML_TEXT_ENCODER.
-	  (ECONV_XML_ATTR_CONTENT_DECORATOR): renamed from
-	  ECONV_XML_ATTR_CONTENT_ENCODER.
-	  (ECONV_STATEFUL_DECORATOR_MASK): renamed from
-	  ECONV_STATEFUL_ENCODER_MASK.
-	  (ECONV_XML_ATTR_QUOTE_DECORATOR): renamed from
-	  ECONV_XML_ATTR_CONTENT_DECORATOR.
-
-	* io.c: follow the renaming.
-
-	* transcode.c: ditto.
-
-Tue Sep  9 20:55:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open0): make it static.
-	  (rb_econv_open): place decorators at last.
-
-Tue Sep  9 20:40:15 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/openssl/test_ssl.rb (OpenSSL#test_client_session):
-	  Debian's openssl 0.9.8g-13 failed at assert(ssl.session_reused?),
-	  when use default SSLContext. [ruby-dev:36167]
-
-Tue Sep  9 20:34:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): last_trans_index removed.
-	  (rb_econv_open_by_transcoder_entries): follow the type change.
-	  (rb_econv_open0): ditto.
-	  (rb_econv_decorate_at): ditto.
-	  (rb_econv_binmode): ditto.
-	  (rb_econv_insert_output): simplified because there are no decorators
-	  at last.
-
-Tue Sep  9 20:21:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): reverse the order of decoders.
-
-Tue Sep  9 20:18:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open0): num_encoders and num_decoders removed.
-
-Tue Sep  9 03:59:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): useless branch removed.
-
-Tue Sep  9 02:18:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_decorate_at_first): declared.
-	  (rb_econv_decorate_at_last): declared.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize
-	  replacement_enc.  allocate outbuf for the last transcoder.
-	  (rb_econv_open0): extracted from rb_econv_open.
-	  (rb_econv_open): use rb_econv_open0 and decorate the result using
-	  rb_econv_decorate_at_first and rb_econv_decorate_at_last.
-	  (rb_econv_decorate_at): new function.
-	  (rb_econv_decorate_at_first): ditto.
-	  (rb_econv_decorate_at_last): ditto.
-	  (rb_econv_binmode): fix iteration end condition.
-	  (econv_init): don't set source_encoding_name and
-	  destination_encoding_name because they are set in rb_econv_open0.
-
-Tue Sep  9 01:10:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): make ec a local variable.
-
-Tue Sep  9 00:20:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_asciicompat_encoding): check decoder.
-
-Tue Sep  9 00:00:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): last_error.partial_input removed.
-
-Mon Sep  8 23:24:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_asciicompat_encoding): renamed
-	  from rb_econv_stateless_encoding to apply stateless ASCII
-	  incompatible encodings such as UTF-16BE.
-
-	* io.c (make_writeconv): use rb_econv_asciicompat_encoding.
-
-	* transcode_data.h (rb_transcoder_asciicompat_type_t): renamed from
-	  rb_transcoder_stateful_type_t.
-	  (rb_transcoder): use rb_transcoder_asciicompat_type_t.
-
-	* transcode.c: follow the type change.
-	  (asciicompat_encoding_i): renamed from stateless_encoding_i.
-	  (rb_econv_asciicompat_encoding): renamed from
-	  rb_econv_stateless_encoding.
-	  (econv_s_asciicompat_encoding): method renamed.
-
-	* tool/transcode-tblgen.rb: follow the type change.
-
-	* enc/trans/utf_16_32.trans: follow the type change.
-	  rb_from_UTF_16BE to UTF-8 is asciicompat_decoder.
-	  rb_from_UTF_16LE to UTF-8 is asciicompat_decoder.
-	  rb_from_UTF_32BE to UTF-8 is asciicompat_decoder.
-	  rb_from_UTF_32LE to UTF-8 is asciicompat_decoder.
-	  UTF-8 to rb_to_UTF_16BE is asciicompat_encoder.
-	  UTF-8 to rb_to_UTF_16LE is asciicompat_encoder.
-	  UTF-8 to rb_to_UTF_32BE is asciicompat_encoder.
-	  UTF-8 to rb_to_UTF_32LE is asciicompat_encoder.
-
-	* enc/trans/newline.trans: follow the type change.  universal newline
-	  decoder is asciicompat_converter.
-
-	* enc/trans/escape.trans: follow the type change.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-Mon Sep  8 23:05:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_insert_output): "readagain" part should be
-	  after replacement.
-
-Mon Sep  8 22:30:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_initialize): rename option name of Dir.open
-	  from :external_encoding to :encoding.
-
-Mon Sep  8 22:16:20 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi.rb : obsolete regex "n" option. [ruby-dev:36130]
-
-Mon Sep  8 18:13:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (getppid): typo. [ruby-dev:36202]
-
-	* process.c (get_ppid): mention the return value on Windows.
-
-Mon Sep  8 18:15:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ArrayCode): less string substitutions.
-
-Mon Sep  8 18:13:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm.c (rb_mRubyVMFrozenCore): registered for GC.
-
-	* re.c (rb_reg_preprocess_dregexp): fix GC problem on MacOS X with
-	  powerpc-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc.
-	  build 5367).
-
-Mon Sep  8 18:09:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): define SIZE_MAX for VC++6/7.
-
-Mon Sep  8 17:46:09 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (filetime_to_unixtime): remove unused variable.
-	  [ruby-dev:36191]
-
-Mon Sep  8 13:47:39 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): add open in block.
-	  see [ruby-dev:35957].
-
-Mon Sep  8 07:09:42 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: some adjustments.
-
-	* rational.c: ditto.
-
-Mon Sep  8 06:50:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (XLDFLAGS): added --enable-auto-import for cygwin and
-	  mingw.
-
-Mon Sep  8 02:04:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_set_replacement): renamed from
-	  rb_econv_set_replacemenet.
-
-	* transcode.c: follow the renaming.
-
-Mon Sep  8 01:10:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_tblgen): log message refined.
-
-Mon Sep  8 00:58:04 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: removed unused code.
-
-Mon Sep  8 00:04:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/iso2022.trans: upcase to iso-2022-jp.
-
-	* enc/emacs_mule.c: ditto.
-
-Sun Sep  7 23:46:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/iso2022.trans: stateless-iso-2022-jp is defined to avoid
-	  undefined conversion error between iso-2022-jp and the corresponding
-	  stateless encoding.
-
-	* enc/emacs_mule.c: replicate emacs-mule as stateless-iso-2022-jp.
-
-Sun Sep  7 20:03:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans (hexstr): renamed from str1.
-
-Sun Sep  7 19:45:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans: use transcode_tblgen.
-
-	* tool/transcode-tblgen.rb: generate an empty line after str1.
-
-Sun Sep  7 19:16:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#str_name): new method to
-	  generate a name base on string content.
-	  (ActionMap#gen_str): extracted from generate_info and use str_name.
-
-Sun Sep  7 18:28:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#generate_info): use a memo to
-	  avoid duplication for STR1.
-
-Sun Sep  7 18:10:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (STR1): defined for a string up to 255 bytes.
-	  (STR1_BYTEINDEX): defined.
-	  (makeSTR1): defined.
-
-	* tool/transcode-tblgen.rb: generate STR1.
-
-	* transcode.c (transcode_restartable0): interpret STR1.
-
-	* enc/trans/escape.trans (fun_so_escape_xml_chref): removed.  STR1 is
-	  used instead.
-
-Sun Sep  7 17:54:45 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* configure.in: Mac OS X's crypt(2) is broken with invalid salt.
-	  [ruby-dev:35899]
-	* string.c (rb_str_crypt): ditto.
-
-Sun Sep  7 17:29:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: o4 is usable only if the first byte is
-	  f0-f7.
-
-Sun Sep  7 12:44:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): choose ASCII compatible encoding as
-	  intermediate encoding if stateful encoder exists.
-
-Sun Sep  7 12:09:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_XML_ATTR_CONTENT_ENCODER): defined.
-	  (ECONV_STATEFUL_ENCODER_MASK): defined.
-	  (ECONV_XML_ATTR_QUOTE_ENCODER): defined.
-	  (ECONV_XML_ATTR_ENCODER): removed.
-
-	* enc/trans/escape.trans (rb_escape_xml_attr_content): defined.
-	  (rb_escape_xml_attr_quote): defined.
-	  (rb_escape_xml_attr): removed.
-
-	* io.c (NEED_WRITECONV): writeconv is required if supplemental
-	  converter is used.
-	  (make_writeconv): apply stateful encoder in writeconv.
-
-	* transcode.c: follow the constant change.
-
-Sun Sep  7 07:24:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/*.el:  merged the following patches from Nathan Weizenbaum
-	  <nex342 at gmail.com>.   [ruby-core:18424]
-
-	* misc/ruby-mode.el: improve here-doc performance.
-
-	* misc/ruby-mode.el: don't crash the whole mode if the Subversion
-	  $ keyword isn't interpolated.
-
-	* misc/ruby-mode.el: don't highlight keywords when they're the
-	  beginning of non-keyword symbols.
-
-	* misc/ruby-mode.el, misc/ruby-electric.el: use regexp-opt where
-	  possible for more efficient regexps.
-
-	* misc/*.el: untabify, for internal consistency and consistency
-	  with standard Emacs elisp files.
-
-	* misc/ruby-mode.el: fix a variable-name error.
-
-	* misc/emacs-mode.el: don't set case-fold-search globally to nil;
-	  instead just set it when we need it.
-
-Sun Sep  7 06:31:51 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (file_expand_path): applied a patch from Nobuhiro Tachino
-	  in [ruby-dev:35948].  fix #491
-
-Sun Sep  7 03:37:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_block_optarg): allow default for block parameters as
-	  long as the value is primary.  a patch from Eric Mahurin
-	  <eric.mahurin at gmail.com> in [ruby-core:16880].
-
-Sun Sep  7 01:07:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): "1.upto 2 {|i| p i }" should be syntax error.
-	  [ruby-dev:36008]
-
-	* test/ruby/test_parse.rb (TestParse): update a test not to use
-	  recently fixed inconsistent syntax.
-
-Sun Sep  7 00:37:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_ERROR_HANDLER_MASK): defined.
-	  (ECONV_DECODER_MASK): defined.
-	  (ECONV_ENCODER_MASK): defined.
-
-	* io.c (make_writeconv): restrict ecflags for writeconv with
-	  ECONV_ERROR_HANDLER_MASK.
-
-Sat Sep  6 23:03:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_XML_TEXT_ENCODER): renamed from
-	  ECONV_HTML_TEXT_ENCODER.
-	  (ECONV_XML_ATTR_ENCODER): renamed from ECONV_HTML_ATTR_ENCODER.
-
-	* enc/trans/escape.trans: follow the renaming.
-
-	* transcode.c: ditto.
-
-Sat Sep  6 21:35:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: add some IPV6 constants. [ruby-dev:36175]
-
-Sat Sep  6 20:10:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_description): show ECONV_HTML_TEXT_ENCODER and
-	  ECONV_HTML_ATTR_ENCODER.
-
-Sat Sep  6 20:06:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_binmode): check actual transcoders.
-
-Sat Sep  6 19:54:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): fix last_tc.
-
-Sat Sep  6 19:36:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_binmode): clear newline flags in writeconv_pre_ecflags.
-
-Sat Sep  6 18:47:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode0): check ECONV_HTML_TEXT_ENCODER and
-	  ECONV_HTML_ATTR_ENCODER.
-
-Sat Sep  6 18:38:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (allocate_converted_string): fix overflow condition.
-
-Sat Sep  6 15:06:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_html): new variable.
-	  (sym_text): ditto.
-	  (sym_attr): ditto.
-	  (econv_opts): check :html=>:text and :html=>:attr.
-	  (Init_transcode): initialize the above variables.
-
-Sat Sep  6 14:46:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_HTML_TEXT_ENCODER): new constant.
-	  (ECONV_HTML_ATTR_ENCODER): ditto.
-
-	* transcode.c (rb_econv_open): check ECONV_HTML_TEXT_ENCODER and
-	  ECONV_HTML_ATTR_ENCODER.
-	  (Init_transcode): Encoding::Converter::HTML_TEXT_ENCODER and
-	  Encoding::Converter::HTML_ATTR_ENCODER defined.
-
-Sat Sep  6 14:15:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (struct trans_open_t): defined to pass num_additional.
-	  (trans_open_i): use struct trans_open_t.
-	  (rb_econv_open): ditto.
-
-Sat Sep  6 13:43:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans (fun_so_escape_html_attr): fix return type.
-
-Sat Sep  6 12:43:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): needless branch removed.
-
-Sat Sep  6 12:38:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): test condition simplified.
-
-Sat Sep  6 12:25:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (stateless_encoding_i): ignore supplemental conversions.
-	  Encoding::Converter.stateless_encoding("html-attr-escaped") should be
-	  nil.
-
-Sat Sep  6 12:19:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans (escape_html_attr_init): new function.
-	  (fun_so_escape_html_attr): new function.
-	  (escape_html_attr_finish): new function.
-	  (rb_escape_html_attr): use them to quote the converted result.
-
-Sat Sep  6 07:54:36 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: uses f_real_p macro.
-
-Sat Sep  6 07:27:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): fail for ASCII incompatible with
-	  newline conversion.
-
-Sat Sep  6 07:24:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): raise an error for ASCII incompatible
-	  encoding without binmode.
-
-Sat Sep  6 07:12:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivrem1): optimization by skipping zeros at the
-	  tail of digits.  a patch from TOYOFUKU Chikanobu
-	  <nobu_toyofuku at nifty.com> in [ruby-dev:36169].
-
-Sat Sep  6 06:28:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans: new file.
-
-Sat Sep  6 06:23:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (StrSet.parse): accept upper case
-	  hexadecimal digits.
-
-Sat Sep  6 05:37:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (output_hex_charref): upcase hexadecimal digits.
-
-Sat Sep  6 05:22:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_UNDEF_HEX_CHARREF): defined.
-
-	* transcode.c (output_hex_charref): new function.
-	  (rb_econv_convert): call output_hex_charref if
-	  ECONV_UNDEF_HEX_CHARREF.
-	  (Init_transcode): Encoding::Converter::UNDEF_HEX_CHARREF added.
-
-Sat Sep  6 03:52:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_convert): use ECONV_INVALID_MASK and
-	  ECONV_UNDEF_MASK.
-
-Sat Sep  6 06:05:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/ruby.h (DBL2NUM): renamed from DOUBLE2NUM.
-	  a patch from Tadashi Saito <shiba at mail2.accsnet.ne.jp>
-	  in [ruby-dev:36102].
-
-Sat Sep  6 04:44:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (Init_Proc): add '===' operator to use procs in when
-	  clause of the case statement.  inspired by <http://www.aimred.com/news/developers/2008/08/14/unlocking_the_power_of_case_equality_proc/>.
-
-Sat Sep  6 03:18:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (allocate_converted_string): add arguments for a buffer
-	  allocated by caller.
-	  (rb_econv_insert_output): provide caller allocated buffer to
-	  allocate_converted_string.
-
-Sat Sep  6 02:58:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode_enc_args): local variables renamed.
-	  (str_transcode0): ditto.
-
-Sat Sep  6 02:23:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_s_stateless_encoding): new method.
-
-Sat Sep  6 02:01:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (enc_arg): extracted from str_transcode_enc_args.
-	  (str_transcode_enc_args): use enc_arg.
-
-Fri Sep  5 20:27:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_modestr_fmode): renamed from
-	  rb_io_mode_flags.
-	  (rb_io_modestr_oflags): renamed from rb_io_mode_modenum.
-	  (rb_io_oflags_fmode): renamed from rb_io_modenum_flags.
-	  (rb_io_mode_flags): defined as a macro.
-	  (rb_io_modenum_flags): ditto.
-
-	* io.c: follow the renaming with consistency.
-
-	* process.c (check_exec_redirect): call rb_io_modestr_oflags.
-
-	* ext/pty/depend: pty.o depends on io.h.
-
-Fri Sep  5 20:12:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans (universal_newline_finish): new function.
-
-Fri Sep  5 20:07:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_mode_modenum): moved from
-	  include/ruby/intern.h.
-
-Fri Sep  5 19:59:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (MODENUM_MAX): removed.
-
-Fri Sep  5 18:37:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (copy_stream_fallback_body): use read method unless readpartial
-	  is available.  [ruby-dev:36124]
-
-Fri Sep  5 18:16:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): strips glibc style option before
-	  charset mapping.  retries without options if they seemed causing
-	  error, and warns.  [ruby-dev:36147]
-
-Fri Sep  5 03:09:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (iseq_data_to_ary): make it static.
-
-	* thread.c (thgroup_enclose): ditto.
-
-Fri Sep  5 02:56:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (thread_recycle_stack_slot, thread_recycle_stack_count):
-	  make it static.
-
-Fri Sep  5 02:40:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_critical): removed.
-
-Fri Sep  5 01:22:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (argf_mark): mark p->encs.ecopts.
-
-Fri Sep  5 00:45:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): rename fields:
-	  from_encoding -> src_encoding, to_encoding -> dst_encoding.
-
-	* transcode.c: follow the renaming.
-
-Fri Sep  5 00:22:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c: variables renamed for consistency.
-
-Fri Sep  5 00:05:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (encodes): make buff fixed length to avoid SEGV by
-	  ruby -e '["a"*10000000].pack("m1000000000")'
-
-Thu Sep  4 23:47:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_mode): set exception mode
-	  correctly.  In spite of BigDecimal.mode(BigDecimal::EXCEPTION_ALL,
-	  true), BigDecimal.new("NaN") did not raise an exception previously.
-
-Thu Sep  4 23:42:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_file_open_str): declared.
-
-	* io.c (rb_file_open_str): defined.
-
-	* ext/zlib/zlib.c (gzfile_s_open): use rb_file_open_str instead of
-	  rb_file_open.
-
-Thu Sep  4 23:18:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans: record newline types met in universal
-	  newline decoder.
-
-Thu Sep  4 23:05:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/prime.rb (Prime::OldCompatibility#each): added compatibility to
-	    Ruby 1.8.7.
-	  (Prime#each): added more rdocs.
-	  (Prime#each): remembers the last value of the given block.
-
-Thu Sep  4 21:53:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): accept an integer as 3rd argument as well.
-
-Thu Sep  4 21:46:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_partial_input): new variable.
-	  (econv_primitive_convert): accept a hash as 5th argument as well.
-
-Thu Sep  4 21:04:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_universal_newline_decoder): new variable.
-	  (sym_crlf_newline_encoder): ditto.
-	  (sym_cr_newline_encoder): ditto.
-	  (econv_opts): check newline converter options.
-	  (econv_init): make 3rd argument hash/nil only.
-
-Thu Sep  4 21:03:28 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c: rename some debug functions.
-
-Thu Sep  4 20:57:54 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_check_trap_pending): added for compatibility.
-
-	* ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: remove ruby/signal.h
-	  dependency.
-
-Thu Sep  4 20:30:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (PType): defined unconditionally.
-
-	* transcode.c (PType): don't define here.
-
-Thu Sep  4 20:19:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: variables renamed for consistency.
-
-Thu Sep  4 19:40:50 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_record_get): to static function.
-	(gc_profile_result): ditto.
-	(gc_profile_report): ditto.
-
-Thu Sep  4 19:20:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_enc_t): rename flags to ecflags.
-	  (rb_io_t): rename writeconv_pre_flags to writeconv_pre_ecflags.
-	  (MakeOpenFile): follow the renaming.
-
-	* io.c: follow the renaming.
-
-Thu Sep  4 19:10:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_INVALID_IGNORE): removed because
-	  it tend to cause security problem.  If the behaviour is really
-	  required, ECONV_INVALID_REPLACE with empty string can be used.
-	  For example, CVE-2006-2313, CVE-2008-1036, [ruby-core:15645],
-	  http://unicode.org/reports/tr36/
-	  (ECONV_UNDEF_IGNORE): ditto.
-
-	* transcode.c (rb_econv_convert): follow the above change.
-	  (econv_opts): ditto.
-	  (Init_transcode): ditto.
-
-Thu Sep  4 13:22:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_vm_struct): replaced signal staff with trap
-	  staff.
-
-	* signal.c (signal_buff): per process resource now.
-
-	* signal.c (trap_list): moved to VM.
-
-	* signal.c (rb_get_next_signal): reverted.
-
-	* signal.c (rb_trap_exit): trap_pending_list was no longer used.
-
-	* thread.c (timer_thread_function): delivers buffered per-process
-	  signals to each VMs.
-
-	* vm.c (rb_vm_mark): marks trap_list.
-
-Thu Sep  4 13:01:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (struct sysopen_struct, rb_sysopen_internal, rb_sysopen):
-	  constified.
-
-	* io.c: expanded ARGF members macros.
-
-Thu Sep  4 10:43:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb (citrus_decode_mapsrc): support older 1.8.
-
-Thu Sep  4 10:33:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_next_argv, argf_set_encoding): copy struct wise.
-
-Thu Sep  4 09:46:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_scan_open_args): follow rb_str_transcode change.
-
-Thu Sep  4 08:59:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (rb_find_file): fix GC problem on Debian GNU/Linux (IA64)
-	  with gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21).
-	  There is no register/memory to contain load_path.  A register (r35)
-	  contains &RARRAY_PTR(load_path), (char*)load_path + 32.
-
-Thu Sep  4 03:10:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new fields: encs.ecopts and
-	  writeconv_pre_ecopts.
-	  (MakeOpenFile): initialize them.
-
-	* include/ruby/encoding.h (rb_str_transcode): take ecopts argument.
-	  (rb_econv_flags): removed.
-	  (rb_econv_prepare_opts): declared.
-	  (rb_econv_open_opts): declared.
-
-	* io.c (make_writeconv): use rb_econv_open_opts.
-	  (make_readconv): ditto.
-	  (io_fwrite): follow rb_str_transcode change.
-	  (rb_io_extract_modeenc): use rb_econv_prepare_opts.
-	  (rb_file_open_generic): initialize encs.ecopts.
-	  (rb_file_open_internal): ditto.
-	  (rb_io_reopen): ditto.
-	  (argf_ecopts): defined.
-	  (argf_next_argv): set encs.ecopts.
-	  (io_encoding_set): use rb_econv_prepare_opts.
-	  (argf_set_encoding): set argf_ecopts.
-
-	* gc.c (gc_mark_children): mark encs.ecopts and writeconv_pre_ecopts
-	  in T_FILE.
-
-	* transcode.c (transcode_loop): take ecopts argument. use
-	  rb_econv_open_opts.
-	  (rb_econv_flags): removed.
-	  (rb_econv_prepare_opts): defined.
-	  (rb_econv_open_opts): defined.
-	  (str_transcode0): take ecopts.
-	  (str_transcode): use rb_econv_prepare_opts.
-	  (rb_str_transcode): take ecopts.
-	  (econv_init): accept hash argument.
-	  (econv_insert_output): follow rb_str_transcode change.
-
-Thu Sep  4 01:30:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_set_replacemenet): declared.
-
-	* transcode.c (rb_econv_t): new fields: replacement_str,
-	  replacement_len, replacement_enc and replacement_allocated.
-	  (get_replacement_character): make len as size_t.
-	  (rb_econv_open_by_transcoder_entries): initialize the new fields.
-	  (rb_econv_close): deallocate replacement_str if it allocated.
-	  (make_replacement): new function.
-	  (output_replacement_character): use make_replacement.
-	  (rb_econv_set_replacemenet): defined.
-	  (econv_get_replacement): new method.
-	  (econv_set_replacement): new method.
-
-Thu Sep  4 01:12:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (filetime_to_timeval): new function, split from
-	  gettimeofday().
-
-	* win32/win32.c (gettimeofday): use above function.
-
-	* win32/win32.c (filetime_to_unixtime): ditto. [ruby-dev:36135]
-
-Thu Sep  4 01:00:57 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode.c (transcode_restartable0): avoid VC++6's bug.
-
-Thu Sep  4 00:26:27 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (make_writeconv): follow akr's previous commit.
-
-Thu Sep  4 00:09:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_option_t): removed.  Since
-	  rb_econv_option_t has only one field, int flags, rb_econv_option_t is
-	  replaced by int.
-
-	* include/ruby/io.h: follow the above change.
-
-	* io.c: ditto.
-
-	* transcode.c: ditto.
-
-Thu Sep  4 00:04:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* win32/win32.c: fix ruby/signal.h depending codes.
-
-Thu Sep  4 00:01:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb (test_getpwuid, test_getgrgid): use
-	  Process.euid and egid instead of Etc.getlogin to identify current
-	  user which may be different from a login one (e.g., su command).
-
-Wed Sep  3 23:52:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb: check only typical use of
-	  setpwent/getpwent/endpwent and setgrent/getgrent/endgrent.
-
-Wed Sep  3 23:33:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_transcoding): moved from transcode_data.h.
-	  (TRANSCODING_READBUF): ditto.
-	  (TRANSCODING_WRITEBUF): ditto.
-	  (TRANSCODING_STATE_EMBED_MAX): ditto.
-	  (TRANSCODING_STATE): ditto.
-
-Wed Sep  3 23:03:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): remove stateful field.
-	  add state field.
-	  (TRANSCODING_STATE): defined.
-	  (rb_transcoder): add fields: state_size, state_init_func,
-	  state_fini_func.
-	  change rb_transcoding* argument to void*.
-
-	* transcode.c (transcode_restartable0): use TRANSCODING_STATE for
-	  first arguments of transcoder functions.
-	  (rb_transcoding_open_by_transcoder): initialize state field.
-	  (rb_transcoding_close): finalize state field.
-
-	* tool/transcode-tblgen.rb: provide state size/init/fini.
-
-	* enc/trans/newline.trans (universal_newline_init): defined.
-	  (fun_so_universal_newline): take void* as a state pointer.
-	  (rb_universal_newline): provide state size/init/fini.
-	  (rb_crlf_newline): ditto.
-	  (rb_cr_newline): ditto.
-
-	* enc/trans/iso2022.trans (iso2022jp_init): defined.
-	  (fun_si_iso2022jp_to_eucjp): take void* as a state pointer.
-	  (fun_so_iso2022jp_to_eucjp): ditto.
-	  (fun_so_eucjp_to_iso2022jp): ditto.
-	  (iso2022jp_reset_sequence_size): ditto.
-	  (finish_eucjp_to_iso2022jp): ditto.
-	  (rb_ISO_2022_JP_to_EUC_JP): provide state size/init/fini.
-	  (rb_EUC_JP_to_ISO_2022_JP): ditto.
-
-	* enc/trans/utf_16_32.trans (fun_so_from_utf_16be): take void* as a
-	  state pointer.
-	  (fun_so_to_utf_16be): ditto.
-	  (fun_so_from_utf_16le): ditto.
-	  (fun_so_to_utf_16le): ditto.
-	  (fun_so_from_utf_32be): ditto.
-	  (fun_so_to_utf_32be): ditto.
-	  (fun_so_from_utf_32le): ditto.
-	  (fun_so_to_utf_32le): ditto.
-	  (rb_from_UTF_16BE): provide state size/init/fini.
-	  (rb_to_UTF_16BE): ditto.
-	  (rb_from_UTF_16LE): ditto.
-	  (rb_to_UTF_16LE): ditto.
-	  (rb_from_UTF_32BE): ditto.
-	  (rb_to_UTF_32BE): ditto.
-	  (rb_from_UTF_32LE): ditto.
-	  (rb_to_UTF_32LE): ditto.
-
-	* enc/trans/japanese.trans (fun_so_eucjp2sjis): take void* as a state
-	  pointer.
-	  (fun_so_sjis2eucjp): ditto.
-	  (rb_eucjp2sjis): provide state size/init/fini.
-	  (rb_sjis2eucjp): provide state size/init/fini.
-
-Wed Sep  3 22:31:11 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/mathn.rb (Integer): moved into prime.rb.
-	  (Prime): ditto.
-
-	* lib/prime.rb (Integer): moved from mathn.rb.
-	  (Integer.each_prime): added.
-	  (Integer#prime?): added.
-	  (Prime): moved from mathn.rb.
-	    Its implementation was rewritten. see [ruby-dev:35863].
-	    And patched by Keiju ISHITSUKA <keiju@ishitsuka.com>,
-	    see [ruby-dev:36128].
-	  (Prime.new):                     obsolete.
-	  (Prime.instance):                added.
-	  (Prime.each):                    added.
-	  (Prime.int_from_prime_division): added.
-	  (Prime.prime_division):          added.
-	  (Prime.prime?):                  added.
-	    Patch by TOYOFUKU Chikanobu
-	    <nobu_toyofuku at nifty.com> in [ruby-dev:36067].
-	  (Prime.cache):                   removed.
-	  (Prime.primes):                  removed.
-	  (Prime.primes_so_far):           removed.
-	  (Prime#int_from_prime_division): added.
-	  (Prime#prime_division):          added.
-	  (Prime#prime?):                  added.
-	  (Prime#primes):                  removed.
-	  (Prime#primes_so_far):           removed.
-	  (Prime::PseudoPrmeGenerator):    added.
-	  (Prime::EratosthenesGenerator):  added.
-	  (Prime::TrialDivisionGenerator): added.
-	  (Prime::Generator23):            added.
-	  (Prime::TrialDivision):          added.
-	    Extracted from the previous implementation of Prime
-	    by Keiju ISHITSUKA.
-	  (Prime::EratosthenesSieve):      added.
-
-	* lib/.document (prime.rb): added
-
-	* lib/README (prime.rb): added
-
-	* test/test_prime.rb: added.
-
-Wed Sep  3 21:49:00 2008  David A. Black  <dblack@rubypal.com>
-
-	* lib/scanf.rb: fixed bug involving matching literal '['
-
-	* test/scanf/test_scanf.rb: added test for scanf.rb fix
-
-Wed Sep  3 21:31:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (WORDINDEX_SHIFT_BITS): defined.
-	  (WORDINDEX2INFO): defined.
-	  (INFO2WORDINDEX): defined.
-
-	* tool/transcode-tblgen.rb: use WORDINDEX2INFO.
-
-	* transcode.c: use INFO2WORDINDEX.
-
-Wed Sep  3 21:19:51 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* golf_prelude.rb: suppress warnings when goruby -v.
-
-Wed Sep  3 21:07:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (BL_MIN_BYTE): defined.
-	  (BL_MAX_BYTE): defined.
-	  (BL_OFFSET): defined.
-	  (BL_ACTION): defined.
-	  (transcode_restartable0): use BL_MIN_BYTE, BL_MAX_BYTE and
-	  BL_ACTION.
-
-Wed Sep  3 20:58:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (BYTE_ADDR): defined.
-	  (WORD_ADDR): ditto.
-	  (BL_BASE): use BYTE_ADDR and WORD_ADDR.
-	  (BL_INFO): use WORD_ADDR.
-
-Wed Sep  3 20:47:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): new field: byte_array_length and
-	  word_array_length.
-
-	* tool/transcode-tblgen.rb (transcode_generated_code): generate
-	  byte_array_length and word_array_length.
-
-Wed Sep  3 20:34:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ArrayCode): new class.
-	  (ActionMap#gen_array_code): moved to ArrayCode.
-	  (ActionMap#numelt_array_code): ditto.
-	  (ActionMap#array_code_insert_at_last): ditto.
-	  (TRANSCODE_GENERATED_BYTES_CODE): use ArrayCode.
-	  (TRANSCODE_GENERATED_WORDS_CODE): ditto.
-
-Wed Sep  3 20:08:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/japanese.trans: new file.
-
-Wed Sep  3 20:04:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#gen_array_code): extracted from
-	  generate_lookup_node.
-	  (ActionMap#numelt_array_code): ditto.
-	  (ActionMap#array_code_insert_at_last): ditto.
-
-Wed Sep  3 20:01:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (parser_encoding_name): defined.
-	  (parser_tokadd_mbchar): show encoding in the message of
-	  "invalid multibyte char" error.
-
-Wed Sep  3 19:28:04 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_method_missing): C99.
-
-Wed Sep  3 19:18:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_thread.rb: fix test.
-	   [ruby-dev:35960]
-
-Wed Sep  3 17:48:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/make_transdb.rb: check $(srcdir)/enc/trans before
-	  enc/trans.
-
-	* enc/trans/make_transdb.rb: keep names_t.
-
-Wed Sep  3 16:54:46 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/signal.h: removed.
-
-	* common.mk, class.c, eval.c, eval_intern.h, file.c, gc.c, hash.c,
-	  io.c, process.c, signal.c: vm_core.h: ditto.
-	  Some unused external global variables are also removed.
-	 (rb_prohibit_interrupt, rb_trap_immediate, rb_trap_pending,
-	  rb_thread_critical)
-
-	* ext/openssl/ossl_ssl.c, ext/openssl/ossl_x509store.c,
-	  ext/readline/readline.c, ext/socket/depend,
-	  ext/socket/socket.c: ditto.
-
-Wed Sep  3 00:23:25 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_insnhelper.c (vm_method_missing): copy arguments to allocated
-	  memory from machine stack.  [ruby-dev:36064]
-
-Tue Sep  2 22:20:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (base_element): removed.
-	  (BYTE_LOOKUP): removed.
-	  (BYTE_LOOKUP_BASE): don't cast.
-	  (BYTE_LOOKUP_INFO): ditto.
-	  (PType): unsigned int, instead of uintptr_t.
-	  (rb_transcoding): change type of next_field, conv_tree_start and
-	  word_array.
-
-	* tool/transcode-tblgen.rb: generate word_array as array of unsigned
-	  int.
-
-	* transcode.c (transcode_restartable0): follow the above type change.
-
-Tue Sep  2 21:22:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: add prefix for byte_array and word_array.
-
-Tue Sep  2 20:57:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/make_transdb.rb: check foo.c only if foo.trans exists.
-
-Tue Sep  2 19:19:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/make_transdb.rb: error message improved.
-
-Tue Sep  2 14:05:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/trans/utf_16_32.trans (from_UTF_8): rename from to_UTF_16BE
-	  because it was not collect.
-
-Tue Sep  2 14:00:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* enc/emacs_mule.c (svn:executable): dropped executable bit.
-
-	* enc/make_encdb.rb (svn:executable): ditto.
-
-Tue Sep  2 12:58:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (COMPILERFLAG): new compiler flag to compile
-	  enc/trans/japanese*.c.
-
-Tue Sep  2 12:37:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/japanese_euc.trans: splitted from japanese.trans to avoid
-	  compiler limitation.  reported by usa.
-
-	* enc/trans/japanese_sjis.trans: ditto.
-
-Tue Sep  2 12:31:24 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (miniruby): new target.
-
-Tue Sep  2 11:47:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (struct load_arg): data is now st_table.
-
-	* marshal.c (mark_load_arg): marks data and compat_tbl.
-
-	* marshal.c (r_object0): no need to check if reentered.
-
-	* marshal.c (marshal_load): make the wrapper with mark_load_arg.
-
-Tue Sep  2 10:49:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (gettimeofday): easier calculation. use the definition
-	  of the Gregorian calendar.
-
-Tue Sep  2 10:33:12 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (distclean-golf): moved golf_prelude.c here from
-	    distclean-local.
-	  (GOLFPRELUDE): added.
-	  (distclean-local): moved golf_prelude.c into distclean-golf.
-
-Tue Sep  2 10:09:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (gettimeofday): calc tv_sec and tv_usec from system
-	  time by myself. [ruby-dev:36084]
-
-Tue Sep  2 04:00:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (o3): prevent sign extension on 64bit environment.
-	  (o4): ditto.
-
-Tue Sep  2 03:26:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: comment removed in generated code.
-
-Tue Sep  2 03:16:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: define TRANSCODE_TABLE_INFO in generated
-	  code.  use it in rb_transcoder.
-
-	* enc/trans/newline.trans: use TRANSCODE_TABLE_INFO.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Tue Sep  2 03:04:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: record infos and BYTE_LOOKUPs as index of
-	  word_array to avoid relocation.
-
-	* transcode.c (transcode_restartable0): add word_array to get infos
-	  and BYTE_LOOKUPs.
-
-	* transcode_data.h (BYTE_LOOKUP_INFO): change return type to
-	  uintptr_t.
-
-Tue Sep  2 02:48:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: don't need to cast offsets array.
-
-Tue Sep  2 02:36:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: record offsets array as index of
-	  byte_array to avoid relocation.
-
-	* transcode.c (transcode_restartable0): add byte_array to get offsets
-	  array.
-
-	* transcode_data.h (BYTE_LOOKUP_BASE): change return type to
-	  uintptr_t.
-	  (rb_transcoder): add fields: byte_array, word_array and word_size.
-
-	* enc/trans/newline.trans: follow rb_transcoder change.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Tue Sep  2 02:05:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: make infos arrays and BYTE_LOOKUPs into
-	  single array.
-
-Tue Sep  2 01:47:44 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (clean-golf): added.
-	  (distclean-golf): added.
-	  (realclean-golf): added.
-	  (clean): added clean-golf.
-	  (distclean): added distclean-golf.
-	  (realclean): added realclean-golf.
-
-Tue Sep  2 01:31:45 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (realclean-local): added newline.c.
-
-Tue Sep  2 01:19:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (BYTE_LOOKUP): change to uintptr_t array.
-	  (BYTE_LOOKUP_BASE): follow the type change.
-	  (BYTE_LOOKUP_INFO): ditto.
-	  (PType): ditto.
-	  (rb_transcoding): ditto.
-
-	* tool/transcode-tblgen.rb: follow the type change.
-
-	* transcode.c: ditto.
-
-	* enc/trans/newline.trans: ditto.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Mon Sep  1 23:32:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (BYTE_LOOKUP_BASE): abstract accessor for
-	  BYTE_LOOKUP.
-	  (BYTE_LOOKUP_INFO): ditto.
-
-	* transcode.c (transcode_restartable0): use BYTE_LOOKUP_BASE and
-	  BYTE_LOOKUP_INFO.
-
-Mon Sep  1 23:14:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: gather infos arrays and BYTE_LOOKUPs.
-
-Mon Sep  1 22:42:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/mkmf.rb (distclean): added RM_RF conftest.dSYM.
-	  Fixes distclean-ext problem on Mac OS X.
-	  (RM_RF): added.
-
-Mon Sep  1 22:37:06 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/rexml/document.rb: limit entity expansion.  Thanks, Luka
-	  Treiber, Mitja Kolsek, and Michael Koziarski.
-
-	* lib/rexml/entity.rb: ditto.
-
-	* test/rexml/test_document.rb: ditto.
-
-Mon Sep  1 22:20:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: make offsets arrays into single array.
-
-Mon Sep  1 21:46:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: gather offsets arrays at top.
-
-Mon Sep  1 21:09:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ./: removed rubyspec from svn:ignore subversion property.
-	  rubyspec directory is no longer used.
-
-	* spec: added mspec and rubyspec to svn:ignore.
-
-Mon Sep  1 19:37:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: ValidEncoding['eucJP-ms'] defined.
-	  "\xA2\xAF".encode("utf-8", "eucJP-ms") should raise
-	  Encoding::ConversionUndefined, not Encoding::InvalidByteSequence.
-
-Mon Sep  1 18:27:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (gettimeofday): shouldn't use mktime(3) because it's
-	  buggy about handling summer time.
-	  reported by Yoshikawa <yoshixool AT gmail.com> at [ruby-dev:36071]
-
-Mon Sep  1 17:07:23 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/euc_jp.c (euc-jp-ms): euc-jp-ms is not an alias of EUC-JP
-	  but eucJP-ms.
-
-	* enc/trans/japanese.trans (eucJP-ms): eucJP-ms is the correct
-	  name of the encoding in Ruby. [ruby-dev:36070]
-
-Mon Sep  1 16:48:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/md5/md5init.c (md5), ext/digest/rmd160/rmd160init.c
-	  (rmd160) ext/digest/sha1/sha1init.c (sha1),
-	  ext/digest/sha2/sha2init.c (sha256, sha384, sha512): constified.
-
-Mon Sep  1 15:15:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.trans: fix mapping priority.
-	  IBM extended is prior than NEC selected IBM.
-
-Mon Sep  1 14:44:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb (transcode_compile_tree): use the first
-	  mapping when some mappings are given for a character.
-	  [ruby-dev:36068]
-
-	* tool/transcode-tblgen.rb: expandtab.
-
-Mon Sep  1 14:40:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* README.EXT (Appendix A): fixed the name of class
-	  Enumerator. Enumerable::Enumerator was renamed just
-	  Enumerator at revision 18564.
-
-	* README.EXT (Appendix A): ditto.
-
-Mon Sep  1 14:37:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb: set ERB source filename for error message.
-
-Mon Sep  1 14:37:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: transdb.c may not present.
-
-Mon Sep  1 14:25:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.trans: fix Ruby 1.8 compatibility.
-
-	* enc/trans/japanese.trans: fix mapping priority. [ruby-dev:36068]
-
-Mon Sep  1 14:24:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_transcode.rb (test_windows_31j): added.
-
-Mon Sep  1 14:00:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* README.EXT (Data-types): fixed for current status.
-	  (Manipulating Ruby data): mentioned some more functions.
-	  (Class/module definition): ditto.
-	  (Global variables shared between C and Ruby):
-	    fixed prototypes for the getter/setter's of global variables.
-	  (Appendix A): mentioned some more files.
-
-	* README.EXT.ja: ditto.
-
-Mon Sep  1 11:31:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (copy_stream, fu_copy_stream0, copy_file): use
-	  IO.copy_stream to get rid of extraneous conversion.
-
-Mon Sep  1 02:55:15 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* strftime.c (rb_strftime): calc timezone offset by myself if system
-	  doesn't provide timezone info.
-
-Mon Sep  1 02:48:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: change "illegal" to "invalid".
-
-Mon Sep  1 02:31:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_generated_code): defined for
-	  generating table at once.
-	  (transcode_tblgen): returns an empty string.
-	  (transcode_generate_node): ditto.
-
-	* enc/trans/newline.trans: use transcode_generated_code.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/single_byte.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-	* enc/trans/korean.trans: ditto.
-
-Mon Sep  1 02:10:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (citrus_decode_mapsrc): print logging
-	  message on STDERR.
-
-Mon Sep  1 01:24:09 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/eucjp-tbl.rb: replace by previous Citrus maps.
-
-	* enc/trans/sjis-tbl.rb: ditto.
-
-Mon Sep  1 01:18:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb: add table generator from Citrus maps.
-
-	* enc/trans/japanese.trans: use Citrus maps.
-
-	* enc/trans/CP: add maps from Citrus.
-
-	* enc/trans/JIS: ditto.
-
-	* test/ruby/test_transcode.rb: Shift_JIS and EUC-JP doesn't support
-	  IBM extended characters.
-
-Mon Sep  1 00:19:45 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (docs): removed a useless make target.
-	  tool/makedoc.rb was removed at revision 13919.
-
-Sun Aug 31 20:49:42 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (numeric_abs2): new.
-
-Sun Aug 31 18:22:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_devel?): checks if the compiler works.
-
-Sun Aug 31 18:02:41 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Temporarily uses git://github.com/yugui/rubyspec.git
-	  until specs for 1.9 is merged into
-	  git://github.com/rubyspec/rubyspec.git.
-
-Sun Aug 31 18:06:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode.c): set source_encoding and
-	  destination_encoding as encoding object.
-	  (ecerr_source_encoding): new method.
-	  (ecerr_destination_encoding): ditto.
-
-Sun Aug 31 17:58:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (Logging.log_open): opens in binary mode to get rid of
-	  extra CR.
-
-	* lib/mkmf.rb (try_func, try_var, have_struct_member),
-	  (scalar_ptr_type?, scalar_type?): use MAIN_DOES_NOTHING.
-
-	* lib/mkmf.rb (MAIN_DOES_NOTHING): defaults to ordinary main.
-
-	* win32/Makefile.sub (config): for MAIN_DOES_NOTHING for wince.
-
-Sun Aug 31 17:30:35 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/README (How to run): added.
-
-Sun Aug 31 17:28:25 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec (config): added.
-
-	* spec/default.mspec (target): replaced the built ruby
-	  to runruby.rb.
-	  Improved $LOAD_PATH on running specs.
-
-	* spec/default.mspec (flags): ditto.
-
-Sun Aug 31 17:16:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): rename instance variable names
-	  for storing encoding names.
-	  (ecerr_source_encoding_name): method renamed.
-	  (ecerr_destination_encoding_name): ditto.
-
-Sun Aug 31 16:57:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_putback): associate encoding to the result.
-
-Sun Aug 31 16:43:56 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/intern.h: rename RB_UBF_DFL to
-	  RUBY_UBF_IO and RUBY_UBF_PROCESS.
-	  Because there is no default (universal) unblocking function.
-
-	* ext/socket/socket.c, file.c, io.c, process.c, thread.c: ditto.
-
-Sun Aug 31 16:42:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_insert_output): raise ArgumentError on failure.
-
-Sun Aug 31 16:39:17 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_thread.rb: add a test.
-
-Sun Aug 31 16:34:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/single_byte.trans (us_ascii_map): don't define 8bit bytes.
-
-Sun Aug 31 14:27:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_last_error): new method.
-
-Sun Aug 31 14:17:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): make two arguments,
-	  destination_byteoffset and destination_bytesize, optional.
-
-Sun Aug 31 14:12:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): error message simplified.
-
-Sun Aug 31 13:47:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/coverage/coverage.c (rb_mCoverage): removed unneeded static variable.
-
-	* ext/socket/socket.c (unix_recv_io): ditto.
-
-	* ext/socket/socket.c (mConst): ditto.
-
-Sun Aug 31 13:45:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspres_initialize): fix for
-	  initialization of r18168.
-
-Sun Aug 31 13:42:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/ripper/eventids2.c (ripper_init_eventids2): use rb_intern_const.
-
-	* ext/ripper/tools/generate.rb (generate_eventids1): ditto.
-
-	* ext/ripper/tools/generate.rb (generate_eventids2_table): ditto.
-
-Sun Aug 31 12:56:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb (rb_dl_init_callbacks): fix indent.
-
-Sun Aug 31 11:39:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/strscan/strscan.c (strscan_do_scan): fix usecnt decrement.
-
-Sun Aug 31 04:38:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_putback): make max argument optional.
-
-Sun Aug 31 04:35:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_putback): putback from last byte.
-
-Sun Aug 31 04:27:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_putback): renamed from econv_primitive_putback.
-
-Sun Aug 31 04:22:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_insert_output): renamed from
-	  econv_primitive_insert_output.
-
-Sun Aug 31 04:20:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_econv.rb: follow econv_primitive_errinfo change.
-
-Sun Aug 31 03:44:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_errinfo): 5th element (partial_input)
-	  removed from result.
-
-Sun Aug 31 01:53:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb: split callback.h to callback-[0-9].c to reduce
-	  memory consumption on compilation.  [ruby-dev:31898]
-
-	* ext/dl/depend: add dependency for callback-[0-9].[co].
-
-Sun Aug 31 01:27:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb (foreach_proc_entry): extracted.
-	  (gencallback): ditto.
-	  (gen_push_proc_ary): ditto.
-	  (gen_push_addr_ary): ditto.
-
-Sat Aug 30 23:51:01 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_tuplebag.rb (test_has_expires_eh): fix failures
-	  [ruby-dev:35937].
-
-Sat Aug 30 23:38:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/test/test_import.rb: fix character code.
-
-	* ext/dl/test/test_func.rb: ditto.
-
-Sat Aug 30 22:23:31 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: added a static variable for nurat_to_f.
-
-Sat Aug 30 20:05:41 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_open, rb_w32_read, rb_w32_write): fallback to
-	  MSVCRT if text mode is specified. this case will not be used from
-	  ruby itself.
-
-Sat Aug 30 19:49:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): EOF is not error.
-	  ref [ruby-dev:36050]
-
-Sat Aug 30 18:17:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (struct token_info): constified.
-
-	* parse.y (token_info_get_column, token_info_has_nonspaces),
-	  (token_info_push, token_info_pop): constified.
-
-Sat Aug 30 15:43:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/openssl/ossl_config.c (Init_ossl_config): memory leak fixed.
-	  a patch <shinichiro.hamaji at gmail.com> in [ruby-dev:35880].
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_set_value): ditto.
-
-	* ext/strscan/strscan.c (strscan_do_scan): ditto.
-
-Sat Aug 30 14:58:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_initialize): fix for
-	  initialization of r18168.
-
-Sat Aug 30 14:47:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb: fix continuation line detection.
-
-Sat Aug 30 14:39:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb (rb_dl_init_callbacks): avoid GC problem which
-	  is caused by 'GC.stress=true; require "dl"'.
-
-Sat Aug 30 11:54:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (token_info_push): -w warns indentation level mismatch.
-	  based on a patch from Yukina Yamano presented at RubyKaigi'07.
-	  See <http://jp.rubyist.net/RubyKaigi2007/Log0609-LT06.html> and
-	  <http://www.logic-junction.com/products/rubyend.html> (Japanese).
-
-Sat Aug 30 10:46:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/iconv/iconv.c: remove include pragma for "ruby/intern.h".
-
-Sat Aug 30 10:43:03 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: remove include pragma for "ruby/intern.h".
-
-Sat Aug 30 10:41:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Rake::Application#help): fix for OPTIONAL_ARGUMENT and
-	  multiple short options.  [ruby-dev:36051]
-
-Sat Aug 30 08:59:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_file_s_absolute_path),
-	  (rb_file_absolute_path): prototyped.
-
-Sat Aug 30 08:09:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): use TYPE not BUILTIN_TYPE.
-	  [ruby-dev:36048]
-
-Sat Aug 30 07:48:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): add SPECIAL_CONST_P check.
-	  [ruby-dev:36048]
-
-	* test/ruby/test_m17n.rb (test_compatible): fix test.
-
-Sat Aug 30 02:48:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_freeze): update rdoc to mention RuntimeError
-	  (not TypeError any longer) would be raised.  [ruby-dev:35982]
-
-Sat Aug 30 01:55:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivmod): remove redundant code.  a patch from
-	  TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in [ruby-dev:36044].
-
-Sat Aug 30 01:37:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#initialize): remove unused constants.  a patch
-	  from Takeyuki Fujioka in [ruby-dev:36046].
-
-Fri Aug 29 22:29:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c ({nucomp,numeric}_rect): new.
-
-	* complex.c: added some aliases
-	  (::rectangular, ::rect, #rectangular, #rect, #phase,
-	  #magnitude).
-
-	* complex.c (string_to_c_internal): should not strip any null
-	  bytes.
-
-	* rational.c (string_to_r_internal): ditto.
-
-	* rational.c (i_gcd): reverted to nurat 0.0.2's one.
-
-	* numeric.c: added an alias (#magnitude).
-
-	* bignum.c: ditto.
-
-	* test/ruby/test_complex.rb: added assertions.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Fri Aug 29 19:46:02 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c, include/ruby/ruby.h: rename T_DEFERRED to T_ZOMBIE.
-
-Fri Aug 29 18:22:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): raise TypeError when argument is not
-	  String nor Regexp.
-
-Fri Aug 29 18:20:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_index_m): only regexp uses byte offset.
-
-	* string.c (rb_str_rindex_m): ditto.
-
-Fri Aug 29 16:48:34 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_call_method): copy arguments to allocated
-	  memory from machine stack.  [ruby-dev:36028]
-
-	* KNOWNBUGS.rb, bootstraptest/test_method.rb: move fixed test.
-
-Fri Aug 29 12:19:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_x509attr.c (ossl_x509attr_initialize): fix for
-	  initialization of r18168.
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspreq_initialize): ditto.
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_initialize): ditto.
-
-Fri Aug 29 11:04:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): ASCII compatible string and US-ASCII
-	  regexp is compatible. [ruby-dev:36033]
-
-	* string.c (rb_str_index_m): second argument is position of character.
-	  by usa. [ruby-dev:36033]
-
-	* string.c (rb_str_rindex_m): ditto.
-
-Fri Aug 29 04:47:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read, rb_w32_write): more accurate handling
-	  of wait result.
-
-Fri Aug 29 02:59:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_finish): new method.
-
-Fri Aug 29 02:45:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_convert): new method.
-
-Fri Aug 29 02:38:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): accept nil as
-	  destination_bytesize for unlimited destination size.
-
-Fri Aug 29 02:11:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): accept nil as input for empty
-	  input.
-
-Fri Aug 29 02:03:56 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): supported %s and %P.
-
-	* time.c (time_strftime): ditto.
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Fri Aug 29 01:57:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_invalid_byte_sequence): new variable.
-	  (sym_undefined_conversion): ditto.
-	  (sym_destination_buffer_full): ditto.
-	  (sym_source_buffer_empty): ditto.
-	  (sym_finished): ditto.
-	  (sym_output_followed_by_input): ditto.
-	  (sym_incomplete_input): ditto.
-	  (econv_result_to_symbol): use above variables.
-	  (Init_transcode): initialize above variables.
-
-Fri Aug 29 00:53:40 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): fixed a bug of padding.
-
-	* test/ruby/test_time.rb: ditto.
-
-Fri Aug 29 00:19:54 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (set_pioinfo_extra): use MSVCRT's open() and close().
-
-Fri Aug 29 00:03:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* file.c (file_expand_path): check invalid access.
-
-Thu Aug 28 23:55:50 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): Time.mktime(2000).strftime("%-S") should
-	  return "0", not "".
-
-	* test/ruby/test_time.rb: ditto.
-
-Thu Aug 28 23:55:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_time.rb: suppress warning during test.
-
-Thu Aug 28 23:50:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_time.rb (test_strftime): make test for %a independent
-	  from local timezone.  [ruby-dev:35992]
-
-Thu Aug 28 23:39:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_shared_replace): remove corrupt noembed string
-	  which causes SEGV.  [ruby-dev:35989]
-
-Thu Aug 28 23:36:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependency updated.
-
-Thu Aug 28 23:28:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* KNOWNBUGS.rb: add a test.  see [ruby-dev:36028]
-
-Thu Aug 28 21:43:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c, include/ruby/win32.h (rb_w32_open): overlapped file
-	  I/O support.
-
-	* win32/win32.c, include/ruby/win32.h (rb_w32_pipe): overlapped pipe
-	  I/O support.
-
-	* win32/win32.c (rb_w32_read, rb_w32_write): overlapped I/O support to
-	  enable canceling I/O.
-
-	* thread_win32.c (ubf_handle): remove workaround.
-
-Thu Aug 28 20:22:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_yield_setup_args): object with to_ary should
-	  behave like array.  a patch from Yusuke Endoh  <mame at tsg.ne.jp>
-	  in [ruby-dev:35988].  [ruby-dev:35977]
-
-	* object.c (convert_type): call less rb_intern() less frequently
-	  by using cache structure.
-
-	* vm_method.c (rb_method_node): fail earlier if no method found.
-
-Thu Aug 28 19:04:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bootstraptest/test_io.rb: no need to create real file.
-
-Thu Aug 28 09:26:53 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb: add test for multipart.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36014]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Thu Aug 28 09:22:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_modruby.rb: add test for mod_ruby adaptor.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36013]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Thu Aug 28 09:17:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_header.rb: add test for CGI::Header.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36010] [ruby-dev:36011]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Thu Aug 28 02:16:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): refcnt field removed.
-	  (MakeOpenFile): refcnt initialization removed.
-
-	* io.c (rb_io_fptr_finalize): don't check refcnt.
-	  (rb_io_close_read): don't use refcnt.
-
-Thu Aug 28 00:07:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_initialize): don't accept IO object.  [ruby-dev:35895]
-
-Wed Aug 27 23:28:51 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke): WIN32OLE#[] and WIN32OLE#[]=
-	  accepts number argument.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Wed Aug 27 14:45:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_core.rb: add core test.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36001] [ruby-dev:36002]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Wed Aug 27 10:34:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie): remove delegate.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35995]
-
-	* test/cgi/test_cgi_cookie.rb: added for above.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35996]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Wed Aug 27 01:13:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_loop): simplified.
-
-Wed Aug 27 01:03:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_result_t): enumeration constant:
-	  econv_incomplete_input.
-
-	* io.c (finish_writeconv): check econv_incomplete_input.
-
-	* transcode.c (transcode_restartable0): return econv_incomplete_input
-	  for unexpected end of source buffer.
-	  (trans_sweep): check econv_incomplete_input.
-	  (rb_trans_conv): ditto.
-	  (rb_econv_convert0): ditto.
-	  (rb_econv_convert): ditto.
-	  (transcode_loop): ditto.
-	  (make_econv_exception): change message for econv_incomplete_input.
-	  (econv_result_to_symbol): return :incomplete_input for
-	  econv_incomplete_input.
-	  (ecerr_incomplete_input): new method.
-
-Wed Aug 27 00:05:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): rename crbuf to cbuf.
-
-	* io.c: follow the renaming.
-
-Tue Aug 26 23:52:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_elem_t): move to transcode.c
-	  (rb_econv_t): defined as an incomplete type.
-
-	* transcode.c (rb_econv_elem_t): moved from encoding.h.
-	  (rb_econv_t): complete type defined.
-
-Tue Aug 26 22:44:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (time_asctime): workaround for MSVCRT's bug.
-	  based on a patch from wanabe <s.wanabe AT gmail.com> at
-	  [ruby-dev:35831] and a suggestion by KIMURA Koichi
-	  <kbk AT kt.rim.or.jp> at [ruby-dev:35832]
-	  fixed [ruby-dev:35555]
-
-Tue Aug 26 21:53:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): disable newline conversion for ASCII
-	  incompatible encodings.
-	  (str_transcode0): don't need disable newline conversion here.
-
-Tue Aug 26 21:44:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_binmode): binmode is effective only once.
-
-Tue Aug 26 19:43:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_expand_path): new class method for class File.
-
-	* file.c (file_expand_path): add absolute_path handling (no ~user
-	  expansion).  [ruby-core:18319]
-
-Tue Aug 26 19:27:54 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/ruby/test_enum.rb (TestEnumerable#test_each_with_object):
-	  Add a test for Enumerable#each_with_object.
-
-Tue Aug 26 19:25:44 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/ruby/test_enumerator.rb (TestEnumerator#test_with_object):
-	  Add (back) the test for Enumerator#with_object.
-
-Tue Aug 26 16:16:43 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_tag_helper.rb: add more tests for html3.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35975]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Tue Aug 26 14:43:10 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c: Activate Enumerator#with_object and add
-	  Enumerable#each_with_object. [experimental]
-
-Tue Aug 26 14:38:32 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_initialize),
-	  test/ruby/test_enumerator.rb: Add an ability to generate an
-	  enumerator from a block. [experimental] [ruby-dev:35903]
-
-Tue Aug 26 13:25:25 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added test_euc_jp
-	  (contributed by Yoshihiro Kambayashi)
-
-Tue Aug 26 11:54:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_tag_helper.rb: added by Takeyuki Fujioka.
-	  [ruby-dev:35971]
-
-Tue Aug 26 11:33:30 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (nOE_element_def): fix error when cascade methods which
-	  don't have arguments. Patch by Takeyuki Fujioka. [ruby-dev:35964]
-
-	* lib/cgi.rb (blockquote): String#collect (this depends on
-	  String#each) is no longer exists.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35946]
-
-	* lib/cgi.rb (blockquote): ditto.
-
-Tue Aug 26 03:06:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): copy invalid/undef flags.
-
-Tue Aug 26 02:47:08 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (dist): tool/make-snapshot is executable.
-
-	* tool/make-snapshot (package): supported release numbers 1.9.0-x.
-
-Tue Aug 26 02:43:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new field: writeconv_pre_opts.
-
-	* io.c (make_writeconv): initialize writeconv_pre_opts.
-	  (io_fwrite): use writeconv_pre_opts.
-
-Tue Aug 26 01:48:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: test _WIN32 for CRLF platform.  (cygwin defines O_BINARY.)
-
-Tue Aug 26 01:29:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: force CRLF handling if RUBY_TEST_CRLF_ENVIRONMENT is defined.
-	  This is only for testing.
-
-Tue Aug 26 01:26:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode0): disable newline conversion for ASCII
-	  incompatible encoding.
-
-Tue Aug 26 00:55:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode0): don't short cut for newline conversion.
-
-Tue Aug 26 00:36:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fwrite): add TEXTMODE_NEWLINE_ENCODER to option for
-	  rb_str_transcode.
-
-Tue Aug 26 00:24:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): show readagain part for invalid
-	  byte sequence exception.  store the part as an instance variable.
-	  (ecerr_readagain_bytes): new method to access the readagain part.
-
-Tue Aug 26 00:02:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpMult): fix double free.
-
-Mon Aug 25 23:59:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): make last_tc NULL if there are only
-	  additional transcoders.
-	  (econv_description): extracted from rb_econv_open_exc.
-	  (rb_econv_open_exc): use econv_description.
-	  (econv_inspect): use econv_description.
-
-Mon Aug 25 23:56:42 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32.c (init_stdhandle): set binmode.
-
-Mon Aug 25 23:38:17 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb(strftime): %[LN] can print with given
-	  arbitrary precision.
-
-	* lib/date/format.rb(strftime): optional flags and filed width
-	  should also affect %[nt].
-
-Mon Aug 25 23:01:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): default defined? should return
-	  "expression" without evaluating the expression.  [ruby-dev:35967]
-
-Mon Aug 25 22:46:01 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb (test_status_and_stop_p): reduce the risk
-	  of race condition.
-
-Mon Aug 25 22:39:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/irb/extend-command.rb (def_extend_command): check number of
-	  arguments.  [ruby-dev:35074]
-
-	* lib/irb/ext/multi-irb.rb (search): check if a corresponding job is
-	  found.  [ruby-dev:35074]
-
-Mon Aug 25 22:29:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_io.rb (test_dup): fix typo.  see [ruby-dev:35958]
-
-Mon Aug 25 22:02:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize
-	  last_error.  num_trans may be zero.
-	  (rb_econv_convert0): num_trans may be zero.
-	  (rb_econv_putbackable): ditto.
-	  (rb_econv_putback): ditto.
-	  (rb_econv_convert): input_ptr and output_ptr may be NULL.
-
-Mon Aug 25 19:05:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): should handle NODE_{AND,OR} as
-	  "expression".  [ruby-dev:35951]
-
-Mon Aug 25 17:36:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_io_ungetbyte): added prototype.
-
-	* io.c (rb_io_gets): use rb_io_getline_1 for unget buffer.
-
-	* ruby.c (load_file): use rb_io_ungetbyte.
-
-	* transcode.c (rb_econv_substr_append): fix for buffer overrun.
-
-	* win32/enc-setup.mak (BUILTIN_TRANSOBJS): added.
-
-Mon Aug 25 14:22:21 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* parse.y (YYSTYPE): struct RVarmap has been no longer
-	  defined.
-	  see also r11717 by matz.
-
-Mon Aug 25 10:42:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (rb_econv_open_exc): constified.
-
-Mon Aug 25 07:10:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/emacs_mule.c: fix ctype.
-
-Mon Aug 25 00:52:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (BUILTIN_TRANSSRCS): defined.
-	  (BUILTIN_TRANSOBJS): defined.
-
-	* enc/Makefile.in (BUILTIN_TRANSES): defined.
-
-	* enc/make_encmake.rb (BUILTIN_TRANSES): defined.
-
-	* enc/depend: don't generate rules for builtin transcoders.
-
-	* common.mk (COMMONOBJS): add BUILTIN_TRANSOBJS.
-	  (enc.mk): pass BUILTIN_TRANSOBJS.
-	  (newline.c): new rule.
-	  (newline.$(OBJEXT)): new rule.
-	  (srcs): newline.c added.
-
-	* Makefile.in (BUILTIN_TRANSSRCS): defined.
-	  (BUILTIN_TRANSOBJS): defined.
-
-	* transcode.c (Init_transcode): call Init_newline.
-
-Mon Aug 25 00:11:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (declare_transcoder): arguments order changed.
-	  (rb_declare_transcoder): call declare_transcoder just once.
-
-Sun Aug 24 19:48:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): use rb_econv_option_t.
-
-	* transcode.c: follow the rb_econv_t change.
-
-Sun Aug 24 19:40:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_init_copy): copy encs.
-
-Sun Aug 24 19:17:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_open): add an argument: vperm.
-	  (open_key_args): call rb_io_open with perm.
-
-Sun Aug 24 19:11:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (sym_invalid): removed.
-	  (sym_undef): removed.
-	  (sym_ignore): removed.
-	  (sym_replace): removed.
-
-Sun Aug 24 19:07:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_reopen): initialize fptr->encs.opts.
-
-Sun Aug 24 18:37:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_s_pipe): accept optional hash.
-	  (rb_io_set_encoding): ditto.
-	  (rb_io_extract_modeenc): use rb_econv_opts to initialize
-	  ecopts.
-	  (rb_file_open_generic): ditto.
-	  (rb_file_open_internal): ditto.
-	  (io_encoding_set): new argument: opt.
-	  (argf_set_encoding): copy fptr->encs.opts to argf_ecopts.
-
-	* transcode.c (rb_econv_opts): accept Qnil for initialization.
-
-Sun Aug 24 18:10:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_enc_t): add opts field.
-	  (FMODE_INVALID_MASK): removed.
-	  (FMODE_INVALID_IGNORE): ditto.
-	  (FMODE_INVALID_REPLACE): ditto.
-	  (FMODE_UNDEF_MASK): ditto.
-	  (FMODE_UNDEF_IGNORE): ditto.
-	  (FMODE_UNDEF_REPLACE): ditto.
-	  (MakeOpenFile): initialize the opts field.
-
-	* io.c (make_writeconv): use the opts field.
-	  (io_fwrite): ditto.
-	  (make_readconv): ditto.
-	  (argf_ecopts): new macro.
-	  (rb_io_extract_modeenc): fill the opts field.
-	  (argf_next_argv): ditto.
-	  (rb_file_open_generic): initialize the opts field.
-	  (rb_file_open_internal): ditto.
-	  (io_encoding_set): ditto.
-	  (argf_set_encoding): ditto.
-
-Sun Aug 24 18:02:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (struct argf): use struct rb_io_enc_t.
-	  (argf_enc): follow the struct argf change.
-	  (argf_enc2): ditto.
-
-Sun Aug 24 17:36:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_str_transcode): make 3rd argument
-	  rb_econv_option_t*.
-
-	* transcode.c (transcode_loop): take rb_econv_option_t* as a argument.
-	  (str_transcode0): ditto.
-	  (str_transcode): make rb_econv_option_t and call str_transcode0 with
-	  it.
-	  (rb_str_transcode): take rb_econv_option_t*.
-
-	* io.c (io_fwrite): follow the rb_str_transcode change.
-
-Sun Aug 24 16:47:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): make enc and enc2 as struct
-	  rb_io_enc_t;
-
-	* io.c: follow the structure change.
-	  (convconfig_t): defined by rb_io_enc_t.
-
-Sun Aug 24 16:19:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_opts): declared.
-
-	* transcode.c (rb_econv_opts): defined.
-
-	* io.c (rb_io_extract_modeenc): use rb_econv_opts.
-
-Sun Aug 24 16:06:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_option_t): defined.
-	  (rb_econv_open): 3rd arg changed.
-	  (rb_econv_open_exc): ditto.
-
-	* io.c (make_writeconv): use rb_econv_option_t.
-	  (make_readconv): ditto.
-	  (rb_econv_open): take rb_econv_option_t for options.
-	  (rb_econv_open_exc): ditto.
-	  (transcode_loop): use rb_econv_option_t.
-	  (econv_init): use rb_econv_option_t.
-
-Sun Aug 24 15:43:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_substr_append): associate dst with destination
-	  encoding when dst is created.
-
-Sun Aug 24 15:21:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_str_transcode): add ecflags argument.
-
-	* transcode.c (econv_opts): extracted from str_transcode.
-	  (str_transcode_enc_args): extracted from str_transcode.
-	  (str_transcode0): extracted from str_transcode.
-	  (str_transcode): use econv_opts, str_transcode_enc_args,
-	  str_transcode0.
-	  (rb_str_transcode): call str_transcode0.
-	  (econv_primitive_insert_output): give the additional argument for
-	  rb_str_transcode.
-
-	* io.c (make_writeconv): use invalid/undef flags.
-	  (io_fwrite): ditto.
-	  (rb_scan_open_args): give the additional argument for
-	  rb_str_transcode.
-
-Sun Aug 24 13:27:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode): check last hash only if 0 < argc.
-
-Sun Aug 24 12:22:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_substr_append): renamed from
-	  rb_econv_string.
-	  (rb_econv_str_convert): declared.
-	  (rb_econv_substr_convert): declared.
-	  (rb_econv_str_append): declared.
-
-	* io.c (io_fwrite): use rb_econv_str_convert instead of
-	  rb_econv_string.
-
-	* transcode.c (rb_econv_substr_append): renamed from rb_econv_string.
-	  (rb_econv_str_append): new function.
-	  (rb_econv_substr_convert): ditto.
-	  (rb_econv_str_convert): ditto.
-
-Sun Aug 24 12:15:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP#urlencode): str[0] returns char in 1.9.
-	  Patch by Junegunn Choi [ruby-core:18368]
-
-Sun Aug 24 12:02:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): return NULL on error.
-
-Sun Aug 24 11:40:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_open_exc): declared.
-
-	* transcode.c (rb_eNoConverter): new exception.
-	  (rb_econv_open_exc): new function.
-	  (transcode_loop): use rb_econv_open_exc.
-
-	* io.c (make_writeconv): use rb_econv_open_exc.
-	  (make_readconv): ditto.
-
-Sun Aug 24 11:26:54 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::unescapeHTML): consider ISO-8859-1.
-	  [ruby-dev:35936]
-
-Sun Aug 24 10:55:00 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/emacs_mule.c: support Emacs/Mule internal encoding.
-
-Sun Aug 24 08:03:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (daylight, timezone): not provided as dllexport on cygwin,
-	  right now.
-
-Sun Aug 24 06:39:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::unescapeHTML): more encoding sensible unescaping.
-	  [ruby-dev:35936]
-
-Sun Aug 24 04:23:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): raise TypeError when argument is Encoding.
-
-Sat Aug 23 23:25:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#out): remove auto encoding conversion and set
-	  LANGUAGE. [ruby-dev:35922]
-
-Sat Aug 23 20:01:29 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_process.rb (TestProcess#test_rlimit_value):
-	  add Errno::EINVAL. [ruby-dev:35900]
-
-Sat Aug 23 18:29:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_scan_open_args): use pop_last_hash.
-
-Sat Aug 23 16:59:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_INVALID_MASK): defined.
-	  (FMODE_INVALID_IGNORE): defined.
-	  (FMODE_INVALID_REPLACE): defined.
-	  (FMODE_UNDEF_MASK): defined.
-	  (FMODE_UNDEF_IGNORE): defined.
-	  (FMODE_UNDEF_REPLACE): defined.
-
-	* io.c (sym_invalid): defined.
-	  (sym_undef): defined.
-	  (sym_ignore): defined.
-	  (sym_replace): defined.
-	  (make_readconv): specify ECONV_INVALID_* and ECONV_UNDEF_* if
-	  FMODE_INVALID_* and FMODE_UNDEF_* is set.
-	  (rb_io_extract_modeenc): check {:invalid, :undef} => {:replace,
-	  :ignore} for FMODE_INVALID_* and FMODE_UNDEF_*.
-
-Sat Aug 23 17:06:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (rb_strftime): support more flags.
-
-Sat Aug 23 15:14:10 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_opts.h: enable "OPT_TRACE_INSTRUCTION" on default.
-
-Sat Aug 23 14:59:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_INVALID_MASK): defined.
-	  (ECONV_INVALID_IGNORE): defined.
-	  (ECONV_INVALID_REPLACE): defined.
-	  (ECONV_UNDEF_MASK): defined.
-	  (ECONV_UNDEF_IGNORE): defined.
-	  (ECONV_UNDEF_REPLACE): defined.
-
-	* transcode.c (INVALID_IGNORE): removed.
-	  (INVALID_REPLACE): removed.
-	  (UNDEF_IGNORE): removed.
-	  (UNDEF_REPLACE): removed.
-	  (rb_econv_convert0): renamed from rb_econv_convert.
-	  (rb_econv_convert): defined to call rb_econv_convert0 with
-	  replace/ignore behavior moved from transcode_loop.
-	  (transcode_loop): replace/ignore behavior removed.
-
-Sat Aug 23 11:23:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): check :textmode and :binmode in option
-	  hash.
-
-Sat Aug 23 10:48:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (pty_getpty): follow rb_io_t's path -> pathv change.
-
-Sat Aug 23 10:42:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (check_pipe_command): extracted from rb_f_open and rb_io_open.
-	  (rb_f_open): use check_pipe_command.
-	  (rb_io_open): ditto.
-
-Sat Aug 23 10:13:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (read_all): fptr->enc2 is 0 if no conversion.
-	  (rb_io_getline_fast): ditto.
-	  (io_getc): ditto.
-
-Sat Aug 23 09:45:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): remove path field and add pathv field.
-	  (MakeOpenFile): initialize pathv as Qnil.
-
-	* gc.c: mark pathv field in T_FILE.
-
-	* io.c: follow the rb_io_t field change.
-
-	* file.c: ditto.
-
-	* ext/socket/socket.c: ditto.
-
-Sat Aug 23 01:42:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_TEXTMODE): defined.
-
-	* include/ruby/encoding.h (rb_econv_t): new field: flags.
-	  (rb_econv_binmode): declared.
-
-	* io.c (io_unread): text mode hack removed.
-	  (NEED_NEWLINE_DECODER): defined.
-	  (NEED_NEWLINE_ENCODER): defined.
-	  (NEED_READCONV): defined.
-	  (NEED_WRITECONV): defined.
-	  (TEXTMODE_NEWLINE_ENCODER): defined for windows.
-	  (make_writeconv): setup converter with TEXTMODE_NEWLINE_ENCODER for
-	  text mode.
-	  (io_fwrite): use NEED_WRITECONV.  character code conversion is
-	  disabled if fptr->writeconv_stateless is nil.
-	  (make_readconv): setup converter with
-	  ECONV_UNIVERSAL_NEWLINE_DECODER for text mode.
-	  (read_all): use NEED_READCONV.
-	  (appendline): use NEED_READCONV.
-	  (rb_io_getline_1): use NEED_READCONV.
-	  (io_getc): use NEED_READCONV.
-	  (rb_io_ungetc): use NEED_READCONV.
-	  (rb_io_binmode): OS-level text mode test removed.  call
-	  rb_econv_binmode.
-	  (rb_io_binmode_m): call rb_io_binmode_m with write_io as well.
-	  (rb_io_flags_mode): return mode string including "t".
-	  (rb_io_mode_flags): detect "t" for text mode.
-	  (rb_sysopen): always specify O_BINARY.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize flags.
-	  (rb_econv_open): if source and destination encoding is
-	  both empty string, open newline converter.  last_tc will be NULL in
-	  this case.
-	  (rb_econv_encoding_to_insert_output): last_tc may be NULL now.
-	  (rb_econv_string): ditto.
-	  (output_replacement_character): ditto.
-	  (transcode_loop): ditto.
-	  (econv_init): ditto.
-	  (econv_inspect): ditto.
-	  (rb_econv_binmode): new function.
-
-Fri Aug 22 21:18:40 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_div): now behaves as quo.
-
-	* complex.c (nucomp_s_generic_p): has been removed.
-
-	* complex.c (nucomp_to_s): adopts new form.
-
-	* complex.c (nucomp_inspect): ditto.
-
-	* complex.c (string_to_c_internal): ditto and supports polar form.
-
-	* complex.c (rb_complex_polar): new.
-
-	* rational.c (nurat_to_s): do not canonicalize.
-
-	* rational.c (nurat_inspect): adopts new form.
-
-	* rational.c (string_to_r_internal): ditto.
-
-	* include/ruby/intern.h: added a declaration.
-
-	* lib/complex.rb: added an obsolete class method.
-
-	* lib/cmath.rb: use scalar? instead of generic?.
-
-Fri Aug 22 20:06:46 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#shutdown):
-	  rescue Errno::ENOTCONN and close. [ruby-dev:35896]
-
-	* test/openssl/test_ssl.rb (OpenSSL#start_server): ditto.
-	  [ruby-dev:35897]
-
-	* lib/net/imap.rb (Net::IMAP#disconnect): ditto. [ruby-dev:35898]
-
-Fri Aug 22 19:58:27 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: no need to require the "lib/rational.rb" any more.
-
-Fri Aug 22 15:47:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/cgi.rb: use bytesize instead of size/length.
-
-Fri Aug 22 14:28:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (rb_strftime): supported flags and precision for most
-	  conversions.  [ruby-dev:35906]
-
-Fri Aug 22 14:04:04 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: test_shift_jis:
-	  fixed comment strings (see r18291)
-
-Fri Aug 22 12:41:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_pid): use PIDT2NUM.
-
-Fri Aug 22 11:36:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_enc_str_new): set US-ASCII to the path
-	  when the path is 7bit string and encoding is ASCII compatible.
-
-	* dir.c (push_glob): set file system encoding when argument encoding
-	  is US-ASCII.
-
-Fri Aug 22 11:30:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_enc_str_new): renamed from dir_enc_str.
-
-	* dir.c (dir_read): use dir_enc_str_new.
-
-	* dir.c (dir_each): ditto.
-
-	* dir.c (push_pattern): ditto.
-
-Fri Aug 22 11:29:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: remove config.h dependency.
-
-Fri Aug 22 10:52:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (gmtime_r): check if reentrant versions are available.
-
-	* time.c (IF_HAVE_GMTIME_R, ASCTIME, GMTIME, LOCALTIME): use reentrant
-	  versions if available.
-
-Fri Aug 22 05:29:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (INT2NUM): just use a simple macro on LP64.
-	  (UINT2NUM): ditto.
-
-Fri Aug 22 05:10:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_file_open_generic): take filename as a VALUE.
-	  (rb_file_open_internal): ditto.
-	  (rb_io_open): ditto.
-	  (rb_file_open): pass filename as a VALUE to rb_file_open_internal.
-	  (rb_open_file): pass filename as a VALUE to rb_file_open_generic.
-	  (open_key_args): pass filename as a VALUE to rb_io_open.
-
-Fri Aug 22 04:33:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h: fix previous change for LP64.
-
-Fri Aug 22 03:19:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (NUM2LONG): make it inline function to evaluate
-	  the argument only once.
-	  `t = Object.new; def t.*(x) p x; 0 end; p Time.at(0, t)' did print x
-	  twice.
-	  (NUM2INT): ditto.
-	  (NUM2LL): ditto.
-	  (INT2NUM): make it inline function.
-	  (LONG2NUM): ditto.
-	  (UINT2NUM): ditto.
-	  (ULONG2NUM): ditto.
-
-Fri Aug 22 03:03:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_s_sysopen): mode can be a Bignum.
-
-Fri Aug 22 02:57:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): notify coerced to caller.
-	  (rb_io_initialize): mode may be a Bignum.
-
-Fri Aug 22 02:42:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): use rb_check_to_integer to test
-	  integer.
-
-Fri Aug 22 02:25:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* iseq.c (iseq_inspect): don't raise on uninitialized object.
-	  show real class name.
-
-Fri Aug 22 02:08:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_initialize): accept hash argument.
-
-Thu Aug 21 23:51:51 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): supported %F and %<precision>N.
-	  reverted config.h to ruby.h for Windows.
-
-	* test/ruby/test_time.rb (TestTime::test_strftime): added tests
-	  for %F and %N.
-
-	* time.c: documented %F and %N.
-
-Thu Aug 21 20:23:26 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb#test_str_crypt): add
-	  key and salt to error message.
-
-Thu Aug 21 19:20:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (rb_stat_inspect): don't raise if self is not initialized.
-
-Thu Aug 21 19:17:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (pst_pid): use rb_attr_get to avoid warning on
-	  Process::Status.allocate.pid.
-	  (pst_inspect): don't raise if self is not initialized.
-
-Thu Aug 21 19:05:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_extract_encoding_option): if internal encoding is not
-	  specified, enc is external encoding.
-
-Thu Aug 21 14:22:50 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c: include ruby/config.h instead of ruby/ruby.h.
-
-	* common.mk: removed the old rule for missing/strftime.c.
-
-Thu Aug 21 09:29:01 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): return "UTC" instead of "GMT".
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Thu Aug 21 07:59:04 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/iconv/test_option.rb (test_ignore_option): skip if iconv
-	  doesn't have transliterate.
-
-	* test/iconv/test_option.rb (test_translit_option): ditto.
-
-Thu Aug 21 06:12:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/scanf.rb (Scanf::FormatSpecifier#initialize): %i should accept
-	  single digit decimal.  [ruby-core:18355]
-
-Thu Aug 21 06:02:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_initialize_copy): Range is now a Struct.
-	  [ruby-core:18353]
-
-	* struct.c (rb_struct_init_copy): made public.
-
-Thu Aug 21 03:09:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_extract_encoding_option): enc2 is external encoding if
-	  external encoding and internal encoding is given.
-	  (pipe_open): add flags and convconfig argument to initialize
-	  fptr->{mode,enc,enc2}.
-	  (pipe_open_v): pass flags and convconfig from caller to pipe_open.
-	  (pipe_open_s): ditto.
-	  (pop_last_hash): new function.
-	  (rb_io_s_popen): use last hash as option to specify code conversion.
-	  (rb_io_open): specify flags and convconfig arguments for
-	  pipe_open_s.
-	  (rb_f_backquote): ditto.
-
-Thu Aug 21 02:27:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (prep_io): local variable renamed.
-	  (rb_io_fdopen): ditto.
-	  (prep_stdio): ditto.
-
-Thu Aug 21 01:58:59 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* configure.in: always check timezone().
-
-	* strftime.c (rb_strftime): prefer timezone/altzone rather than
-	  gettimeofday().  The second argument to gettimeofday() is ignored
-	  on Solaris.
-
-Thu Aug 21 02:03:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (open_key_args): simplified.
-
-Thu Aug 21 01:57:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (open_key_args): IO.foreach(path, rs, limit) didn't work.
-
-Thu Aug 21 01:31:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_file_sysopen_internal): unused function removed.
-	  (rb_file_sysopen): ditto.
-
-Thu Aug 21 01:09:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: use mode_t for the 3rd argument, permission, of open(2).
-
-Thu Aug 21 00:51:42 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* configure.in: removed strftime from AC_REPLACE_FUNCS().
-
-	* include/ruby/missing.h: removed prototype for strftime().
-
-	* missing/strftime.c: removed.
-
-	* time.c (time_to_s): use rb_strftime() instead of strftime(3).
-	  (time_zone): ditto.
-
-Thu Aug 21 00:49:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* strftime.c: win32 support.
-
-Thu Aug 21 00:20:05 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c: new file.
-
-	* common.mk (COMMONOBJS): added strftime.$(OBJEXT).
-
-	* time.c (time_strftime): do not use strftime(3).  supported
-	  %L(millisecond) and %N(nanosecond).
-
-	* test/ruby/test_time.rb: added tests for %L and %N.
-
-Wed Aug 20 23:53:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_set_encoding): removed.
-	  (rb_io_open): set up encoding using new argument opt.
-	  (open_key_args): call rb_io_open with opt.  don't call
-	  io_set_encoding.
-
-Wed Aug 20 22:30:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_file_open_internal): use rb_io_flags_modenum.
-	  (rb_io_reopen): use rb_io_flags_modenum and rb_io_modenum_mode.
-	  (rb_io_stdio_file): ditto.
-
-Wed Aug 20 22:28:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (proc_new): use the given class.
-
-	* vm.c (vm_make_proc): added an argument for the class.
-
-Wed Aug 20 22:24:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_take): get rid of extraneous iteration.
-
-Wed Aug 20 20:32:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_open_with_args): use rb_open_file instead of rb_io_open.
-
-Wed Aug 20 20:16:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_scan_open_args): extracted from rb_open_file.
-
-Wed Aug 20 19:22:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (convconfig_t): new type.
-	  (rb_io_extract_modeenc): new function.
-	  (rb_file_open_generic): new function.
-	  (rb_file_open_internal): use rb_file_open_generic.
-	  (rb_file_sysopen_internal): use rb_file_open_generic.
-	  (rb_open_file): use rb_io_extract_modeenc and rb_file_open_generic.
-	  (rb_io_open): call rb_file_open_internal instead of rb_file_open.
-
-Wed Aug 20 19:15:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (Init_IO): new constants: File::DSYNC, File::RSYNC and
-	  File::NOFOLLOW.
-
-Wed Aug 20 18:41:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_open_file): don't lookup :mode and :perm in opt.  it is
-	  useless because vmode and perm is overwritten by rb_scan_args
-	  anyway.
-
-Wed Aug 20 18:37:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (open_key_args): meaningless MEMCPY removed.
-
-Wed Aug 20 18:30:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (prep_io) [cygwin]: use FMODE_BINMODE instead of O_BINARY.
-
-Wed Aug 20 16:39:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sample): performance improvement for huge array.
-
-Wed Aug 20 12:28:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sample): get rid of infinite loop.  #455
-
-Wed Aug 20 06:09:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_TRUNC): value changed because 0x100 is used
-	  as FMODE_NOREVLOOKUP in socket.c
-
-Wed Aug 20 05:19:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (parse_mode_enc): extracted from mode_enc.
-	  (io_extract_encoding_option): extracted from io_set_encoding.
-
-Wed Aug 20 04:17:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_flags_modenum): make it static.
-
-Wed Aug 20 03:36:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_TRUNC): new constant.
-
-	* io.c (rb_io_mode_flags): set FMODE_TRUNC for "w".
-	  (rb_io_modenum_flags): set FMODE_TRUNC for O_TRUNC.
-	  (rb_io_flags_modenum): new function.
-	  (rb_io_mode_modenum): just use rb_io_mode_flags and
-	  rb_io_flags_modenum.
-
-Wed Aug 20 02:36:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fopen): macro for vms removed.  fopen is not used now.
-
-Wed Aug 20 02:27:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): fix memory leak.
-	  (rb_econv_close): ditto.
-	  fixed by shinichiro.h.  [ruby-dev:35880]
-
-Tue Aug 19 21:50:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_fopen): declaration removed.
-
-	* io.c (rb_fopen): unused function removed.
-
-Tue Aug 19 21:14:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_READWRITE): define as
-	  FMODE_READABLE|FMODE_WRITABLE.
-
-Tue Aug 19 21:13:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_flags_mode): use hexadecimal in error message.
-	  (rb_io_modenum_mode): ditto.
-	  (rb_io_initialize): ditto.
-
-Tue Aug 19 18:23:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_flags_mode): add a prefix 0 to octal in error message.
-	  (rb_io_modenum_mode): ditto.
-
-Tue Aug 19 18:05:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_*): sorted and describe the values in
-	  hexadecimal.
-
-Tue Aug 19 17:32:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_initialize): store the
-	  result of d2i_X509_NAME into DATA_PTR(self).
-
-Tue Aug 19 04:54:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (FileUtils#ruby): takes care of space containing path.
-	  [ ruby-Bugs-21591 ]
-
-Tue Aug 19 01:32:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_open_file): encoding in mode string was ignored if perm is
-	  specified.
-
-Tue Aug 19 01:02:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_open_file): don't access argv[-1] by
-	  File.allocate.instance_eval { initialize }.
-
-Tue Aug 19 00:56:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_inspect): don't raise for uninitialized Regexp.
-
-Tue Aug 19 00:34:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_check_readable): side effect for STDIN removed.
-	  (rb_io_external_encoding): ditto.
-
-Mon Aug 18 23:27:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_ungetbyte): renamed from io_ungetc.
-	  (rb_io_ungetbyte): new method.
-	  (rb_io_ungetc): push back into character buffer if enc2 is set.
-
-Mon Aug 18 22:41:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (id_encode): removed.
-
-Mon Aug 18 22:30:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): if enc and enc2 is set, convert
-	  string.encoding to enc2.
-
-	* include/ruby/io.h: comment changed.
-
-Mon Aug 18 21:02:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new fields: writeconv,
-	  writeconv_stateless and writeconv_initialized.
-	  (MakeOpenFile): initialize them.
-
-	* include/ruby/encoding.h (rb_econv_stateless_encoding): declared.
-	  (rb_econv_string): declared.
-
-	* io.c (make_writeconv): new function.
-	  (io_fwrite): use econv.
-	  (make_readconv): fix error message.
-	  (finish_writeconv): new function.
-	  (fptr_finalize): call finish_writeconv.
-	  (clear_writeconv): new function.
-	  (clear_codeconv): new function to call both clear_readconv and
-	  clear_writeconv.
-	  (rb_io_fptr_finalize): call clear_codeconv instead of
-	  clear_readconv.
-	  (mode_enc): ditto.
-	  (io_set_encoding): ditto.
-	  (argf_next_argv): ditto.
-	  (io_encoding_set): ditto.
-
-	* gc.c (gc_mark_children): mark writeconv_stateless in T_FILE.
-
-	* transcode.c (stateless_encoding_i): new function.
-	  (rb_econv_stateless_encoding): ditto.
-	  (rb_econv_string): ditto.
-
-Mon Aug 18 17:23:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (clear_readconv): extracted from rb_io_fptr_finalize.
-	  (mode_enc): call clear_readconv.
-	  (io_set_encoding): ditto.
-	  (argf_next_argv): ditto.
-	  (io_encoding_set): ditto.
-
-Mon Aug 18 16:54:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (mode_enc): modify enc and enc2 consistently.
-	  (io_set_encoding): ditto.
-	  (io_encoding_set): ditto.
-
-Mon Aug 18 13:21:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_search_path): prevent infinite loop by
-	  searching a path for self conversion.
-
-Mon Aug 18 12:45:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_enc_str): code conversion removed.
-	  (io_enc_str_converted): removed because it is identical to
-	  io_enc_str now.
-
-Mon Aug 18 12:12:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_shift_crbuf): add strp argument to append into existing
-	  string.
-	  (read_all): use econv if enc2 is set.
-	  (io_getc): follow the io_shift_crbuf change.
-
-Mon Aug 18 10:35:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_enc_str_converted): new function.
-	  (make_readconv): extracted from io_getc.
-	  (more_char): ditto.
-	  (appendline): use econv via make_readconv and more_char for code
-	  conversion.
-	  (prepare_getline_args): don't convert record separator.
-	  (rb_io_getline_1): don't use rb_io_getline_fast if enc2 is set.
-	  (io_getc): use make_readconv and more_char.
-
-Mon Aug 18 08:27:44 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* common.mk: fix error in uncommon.mk.
-
-Mon Aug 18 06:10:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: config.h depends config.status.
-
-Mon Aug 18 03:59:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (appendline): appendline cannot check character boundary.
-	  (rb_io_getline_1): relax limit until character boundary.
-
-Mon Aug 18 02:25:11 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI::Socket#eof?): added lacked method.
-
-Sun Aug 17 21:50:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (prepare_getline_args): io.gets(10,nil) should cause TypeError.
-
-Sun Aug 17 15:58:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: not check config.h.
-
-	* lib/mkmf.rb (init_mkmf): add include/ruby/backward to $INCFLAGS.
-
-	* include/ruby/backward/{st,util}.h: added for backward compatibility.
-	  [ruby-dev:35811]
-
-Sun Aug 17 13:40:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_putback): new method.
-
-Sun Aug 17 13:23:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_putbackable): declared.
-	  (rb_econv_putback): ditto.
-
-	* transcode.c (rb_econv_putbackable): implemented.
-	  (rb_econv_putback): ditto.
-
-	* io.c (io_getc): put back bytes if possible.
-
-Sun Aug 17 12:00:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): add several instance variables
-	  to exception object.
-	  (ecerr_source_encoding): new method:
-	  Encoding::ConversionUndefined#source_encoding and
-	  Encoding::InvalidByteSequence#source_encoding.
-	  (ecerr_destination_encoding): new method:
-	  Encoding::ConversionUndefined#destination_encoding and
-	  Encoding::InvalidByteSequence#destination_encoding.
-	  (econverr_error_char): new method:
-	  Encoding::ConversionUndefined#error_char.
-	  (econverr_error_bytes): new method:
-	  Encoding::ConversionUndefined#error_bytes.
-
-Sun Aug 17 11:43:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (struct MT): packed Mersenne Twister staffs.
-
-	* random.c (struct RandSeed): packed random seed staffs.
-
-Sun Aug 17 08:38:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/iconv/test_option.rb (test_ignore_option): skip if iconv
-	  doesn't have transliterate.
-
-	* test/iconv/test_option.rb (test_translit_option): ditto.
-
-Sun Aug 17 01:29:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new fields: readconv, crbuf, crbuf_off,
-	  crbuf_len, crbuf_capa.
-	  (MakeOpenFile): initialize them.
-
-	* io.c (io_shift_crbuf): new function.
-	  (io_getc): use econv.
-	  (rb_io_fptr_finalize): finalize readconv and crbuf.
-
-Sun Aug 17 00:02:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_check_error): declared.
-
-	* transcode.c (make_econv_exception): new function.
-	  (transcode_loop): use make_econv_exception.
-	  (rb_econv_check_error): defined.
-
-Sat Aug 16 15:23:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_elem_t): fields removed: from and
-	  to.
-	  (rb_econv_t): new fields: source_encoding_name and
-	  destination_encoding_name.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize the
-	  new fields.
-	  (rb_econv_open): set up the new fields.
-	  (econv_inspect): use the new fields.
-
-Sat Aug 16 14:22:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): add fields: in_buf_start,
-	  in_data_start, in_data_end, in_buf_end and last_trans_index.
-	  (rb_econv_output): removed.
-	  (rb_econv_insert_output): declared.
-	  (rb_econv_encoding_to_insert_output): declared.
-
-	* enc/trans/newline.trans (rb_universal_newline): stateful_type
-	  changed.
-
-	* transcode.c (transcode_restartable0): initialize inchar_start,
-	  tc->recognized_len and next_table at beginning of the loop.
-	  (rb_econv_open_by_transcoder_entries): initialize new fields.
-	  (rb_econv_open): setup last_trans_index.
-	  (trans_sweep): last out_buf_start can be non-NULL now.
-	  (rb_econv_convert): check last out_buf_start and in_buf_start at
-	  first.
-	  (rb_econv_output_with_destination_encoding): removed.
-	  (econv_just_convert): removed.
-	  (rb_econv_output): removed.
-	  (econv_primitive_output): method removed.
-	  (rb_econv_encoding_to_insert_output): new function.
-	  (allocate_converted_string): new function.
-	  (rb_econv_insert_output): new function.
-	  (econv_primitive_insert_output): new method.
-	  (output_replacement_character): use rb_econv_insert_output.  unused
-	  arguments removed.
-
-Sat Aug 16 09:20:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_intern_const): tiny optimization.
-
-	* include/ruby/ruby.h (SSIZET2NUM, NUM2SSIZET, SSIZE_MAX, SSIZE_MIN):
-	  macros for ssize_t.
-
-Sat Aug 16 08:11:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder_stateful_type_t): defined.
-	  (rb_transcoder): add field: stateful_type.
-
-	* tool/transcode-tblgen.rb: generate stateful_type field as
-	  stateless_converter.
-
-	* enc/trans/iso2022.trans: follow rb_transcoder change.
-
-	* enc/trans/newline.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Fri Aug 15 23:07:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_just_convert): extracted from rb_econv_output.
-	  (rb_econv_output): use econv_just_convert.
-	  (econv_primitive_output): new method.
-
-Fri Aug 15 19:57:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_output): add str_encoding
-	  argument.
-
-	* transcode.c (get_replacement_character): add repl_enc_ptr argument.
-	  (rb_econv_output_with_destination_encoding): renamed from
-	  rb_econv_output and make it static.
-	  (rb_econv_output): convert str and call
-	  rb_econv_output_with_destination_encoding.
-	  (output_replacement_character): follow above interface change.
-
-Fri Aug 15 19:33:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_drop_bytes): use memmove.
-
-Fri Aug 15 18:33:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): add error_tc in last_error.
-
-	* transcode.c (rb_econv_convert): fill error_tc.
-
-Fri Aug 15 18:10:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): new field: last_error.
-
-	* transcode.c (rb_trans_conv): new argument: result_position_ptr.
-	  (rb_econv_convert): fill last_error.
-	  (econv_result_to_symbol): extracted from econv_primitive_convert.
-	  (econv_primitive_errinfo): new method.
-
-Fri Aug 15 17:39:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.{c,h}): creates in the dependency order.
-
-Fri Aug 15 16:59:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (exec_event_hooks): skips RubyVM::FrozenCore.
-
-	* vm.c (Init_VM): get rid of SEGV in a trace proc.
-
-Fri Aug 15 09:33:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (conv_init): check empty name.
-
-Fri Aug 15 09:03:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): don't create dummy encoding if
-	  rb_econv_open is failed.
-	  (make_dummy_encoding): new function extracted from make_encoding.
-	  (make_encoding): removed.
-
-Fri Aug 15 01:07:16 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk ({$(srcdir)}.y.c): escape backslash.
-
-Fri Aug 15 01:05:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): set destination_buffer
-	  encoding.
-
-Fri Aug 15 00:52:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_output): declared.
-
-	* transcode_data.h (rb_transcoder): add resetsize_func field.
-
-	* enc/trans/iso2022.trans (iso2022jp_reset_sequence_size): defined.
-	  (rb_EUC_JP_to_ISO_2022_JP): provide resetsize_func.
-
-	* tool/transcode-tblgen.rb: set NULL for resetsize_func.
-
-	* transcode.c (rb_econv_output): new function for inserting output.
-	  (output_replacement_character): use rb_econv_output.
-	  (transcode_loop): check return value of
-	  output_replacement_character.
-
-Thu Aug 14 23:47:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_UNIVERSAL_NEWLINE_DECODER): defined.
-	  (ECONV_CRLF_NEWLINE_ENCODER): ditto.
-	  (ECONV_CR_NEWLINE_ENCODER): ditto.
-	  (ECONV_PARTIAL_INPUT): ditto.
-	  (ECONV_OUTPUT_FOLLOWED_BY_INPUT): ditto.
-
-	* transcode.c: use ECONV_* defined as above.
-
-Thu Aug 14 23:35:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c: local variable renamed.
-
-Thu Aug 14 23:22:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_result_t): moved from
-	  transcode_data.h.
-	  (rb_econv_elem_t): ditto.
-	  (rb_econv_t): ditto.  source_encoding and destination_encoding field
-	  is added.
-	  (rb_econv_open): declared.
-	  (rb_econv_convert): ditto.
-	  (rb_econv_close): ditto.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize
-	  source_encoding and destination_encoding field as NULL.
-	  (rb_econv_open): make it external linkage.
-	  (rb_econv_close): ditto.
-	  (rb_econv_convert): ditto.  renamed from rb_econv_conv.
-	  (make_encoding): new function.
-	  (econv_init): use make_encoding and store rb_encoding* in
-	  rb_econv_t.
-	  (econv_source_encoding): new method
-	  Encoding::Converter#source_encoding.
-	  (econv_destination_encoding): new method
-	  Encoding::Converter#destination_encoding.
-
-Thu Aug 14 22:44:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_econv_result_t): change enumeration
-	  constant's prefix: transcode_ to econv_.
-
-	* transcode.c: follow the constant prefix change.
-
-Thu Aug 14 21:34:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): accept Encoding object as source_encoding
-	  and destination_encoding.
-
-Thu Aug 14 21:10:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_filesystem_encoding): use default external encoding
-	  for Unix.
-
-	* dir.c (dir_initialize): don't cache fs_encoding.
-
-Thu Aug 14 20:58:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): renamed from
-	  rb_trans_open_by_transcoder_entries.
-
-Thu Aug 14 20:56:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_max_output): removed.
-
-Thu Aug 14 20:52:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: check unexpected actions.
-
-Thu Aug 14 20:25:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (transcode_invalid_byte_sequence): renamed from
-	  transcode_invalid_input.
-	  (transcode_destination_buffer_full): renamed from transcode_obuf_full.
-	  (transcode_source_buffer_empty): renamed from transcode_ibuf_empty.
-	  (rb_econv_result_t): renamed from rb_trans_result_t.
-	  (rb_econv_elem_t): renamed from rb_trans_elem_t.
-	  (rb_econv_t): renamed from rb_trans_t.
-
-	* transcode.c (UNIVERSAL_NEWLINE_DECODER): renamed from
-	  UNIVERSAL_NEWLINE.
-	  (CRLF_NEWLINE_ENCODER): renamed from CRLF_NEWLINE.
-	  (CR_NEWLINE_ENCODER): renamed from CR_NEWLINE.
-	  (rb_econv_open): renamed from rb_trans_open.
-	  (rb_econv_close): renamed from rb_trans_close.
-
-Thu Aug 14 19:41:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (load_transcoder): unused function removed.
-	  (rb_transcoding_open): ditto.
-
-Thu Aug 14 17:57:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_ispunct): added.
-
-	* common.mk (COMMONOBJS), inits.c (rb_call_inits): id.c is now
-	  included from parse.c.
-
-	* id.c (Init_id), id.h (ruby_method_ids): added IDs used by VM.
-
-	* parse.y (global_symbols): added rooms for VM IDs.
-
-	* parse.y (rb_intern3, rb_id2str): single punctuation symbol is now
-	  same as char code.
-
-Thu Aug 14 17:46:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (union tmpyystype): no longer needed, since YYSTYPE is
-	  defined in parse.h now.
-
-Thu Aug 14 17:27:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* version.c (Init_version): add RUBY_ENGINE constant.
-
-Thu Aug 14 15:34:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_conv): new function.  it doesn't consume
-	  input too much, even for multilevel conversion.
-	  (transcode_loop): use rb_econv_conv.
-	  (econv_primitive_convert): ditto.
-
-Thu Aug 14 15:27:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/defines.h (RUBY_ALIAS_FUNCTION): fallback definition.
-
-Thu Aug 14 15:08:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_trans_result_t): new enumeration constant:
-	  transcode_output_followed_by_input.
-
-	* transcode.c (OUTPUT_FOLLOWED_BY_INPUT): new flag.
-	  (transcode_restartable0): suspend when output followed by input if
-	  OUTPUT_FOLLOWED_BY_INPUT is specified.
-	  (trans_sweep): check OUTPUT_FOLLOWED_BY_INPUT.
-	  (rb_trans_conv): support OUTPUT_FOLLOWED_BY_INPUT.
-	  (econv_primitive_convert): return :output_followed_by_input for
-	  transcode_output_followed_by_input.
-
-Thu Aug 14 14:57:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (getrusage_time): should return the value.
-
-	* thread.c (rb_thread_priority_set): get rid of C99 feature.
-
-	* transcode.c (transcode_search_path): ditto.
-
-	* vm.c (REWIND_CFP): get rid of statement expressions.
-
-Thu Aug 14 14:13:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (Init_VM): hide FrozenCore.
-
-Thu Aug 14 12:20:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (load_transcoder): suppress warning.
-
-	* missing/vsnprintf.c (BSD_vfprintf): ditto.
-
-Thu Aug 14 12:01:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (gnumake): check for GNU make.
-
-	* Makefile.in (uncommon.mk): includes filtered common.mk.
-
-	* common.mk (parse.h): workaround for nmake.
-
-Thu Aug 14 06:09:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_execute_interrupts): switch event
-	  should be occur only once.
-
-Thu Aug 14 05:36:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: parse.h depends on parse.c.
-
-	* common.mk: hash.o depends on $(ID_H_INCLUDES).
-
-Thu Aug 14 02:45:16 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_file_exhaustive.rb (TestFileExhaustive#setup):
-	  set group of tmpdir.  [ruby-dev:35633]
-
-Thu Aug 14 15:50:30 2008  Giuseppe Bilotta  <giuseppe.bilotta@gmail.com>
-
-	* hash.c (set_default): fix rdoc.  #441
-
-Thu Aug 14 02:23:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): add output_byteoffset
-	  argument.
-
-Thu Aug 14 00:43:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_gcc_function_alias): checks alias attribute.
-
-	* string.c (alias_func): replaced with RUBY_ALIAS_FUNCTION.
-
-Wed Aug 13 23:42:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.h): fake rule.
-
-Wed Aug 13 23:15:58 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/ruby/test_thread.rb (test_list): call Thread.pass to run t1.
-	  fixed [ruby-core:18264].
-
-Wed Aug 13 23:05:51 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* string.c (alias_func): changed to 'weak, alias' from 'alias' for
-	  Mac OSX. (closes #429)
-
-Wed Aug 13 19:40:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c: count only freed object as freelist size.
-
-Wed Aug 13 18:34:22 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* marshal.c (marshal_load): set arg.untrust properly.
-
-Wed Aug 13 17:47:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_inspect): new method.
-
-Wed Aug 13 17:35:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable0): several local variables
-	  removed.
-
-Wed Aug 13 17:35:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_set_default_proc): add new method.  a patch from
-	  Giuseppe Bilotta.  #419
-
-Wed Aug 13 17:31:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_insnhelper.c (caller_setup_args): should ensure if the value
-	  from to_proc is a real Proc.
-
-Wed Aug 13 17:28:29 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* common.mk: regint.h no longer includes vm_core.h.
-
-Wed Aug 13 17:26:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): add fields: writebuf_off,
-	  writebuf_len and writebuf.
-	  (TRANSCODING_WRITEBUF): new macro.
-
-	* transcode.c (transcode_restartable0): output until output buffer is
-	  really full.
-	  (rb_transcoding_open_by_transcoder): initialize writebuf_len,
-	  writebuf_off and writebuf.
-	  (rb_transcoding_close): finalize writebuf.
-
-Wed Aug 13 17:18:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_check_ints): added.  please note that
-	  this function may cause ruby's thread switching.
-
-	* include/ruby/intern.h: ditto.
-
-	* regint.h: use rb_thread_check_ints() instead of
-	  RUBY_CHECK_INTS() directly.
-
-Wed Aug 13 17:01:36 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* golf_prelude.rb, lib/set.rb (TC_Set#test_each),
-	  test/readline/test_readline_history.rb (Readline#test_each__enumerator),
-	  test/ruby/test_array.rb (TestArray#test_collect),
-	  test/ruby/test_enumerator.rb (TestEnumerator#test_initialize):
-	  Enumerable::Enumerator is now called Enumerator.
-
-	* lib/rinda/tuplespace.rb (Rinda::TupleBag#initialize): Use
-	  enum_for instead of hardcoding Enumerable::Enumerator.
-
-Wed Aug 13 16:40:57 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c, vm_core.h: add manual priority support
-	  using time slice.  if you enable USE_NATIVE_THREAD_PRIORITY
-	  macro, this mechanism is ignored.  [ruby-dev:33124]
-
-	* thread_pthread.c, thread_win32.c: ditto.
-
-	* test/ruby/test_thread.rb: fix test parameter.
-
-Wed Aug 13 16:02:14 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* object.c (rb_obj_untrusted): new method Object#untrusted?.
-	  (rb_obj_untrust): new method Object#untrust.
-	  (rb_obj_trust): new method Object#trust.
-
-	* array.c, debug.c, time.c, include/ruby/ruby.h, re.c, variable.c,
-	  string.c, io.c, dir.c, vm_method.c, struct.c, class.c, hash.c,
-	  ruby.c, marshal.c: fixes for Object#untrusted?.
-
-	* test/ruby/test_module.rb, test/ruby/test_array.rb,
-	  test/ruby/test_object.rb, test/ruby/test_string.rb,
-	  test/ruby/test_marshal.rb, test/ruby/test_hash.rb: added tests for
-	  Object#untrusted?.
-
-Wed Aug 13 16:13:58 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_m17n.rb: follow EncodingCompatibilityError.
-
-	* test/ruby/test_mixed_unicode_escapes.rb: ditto.
-
-	* test/ruby/enc/test_utf16.rb: ditto.
-
-Wed Aug 13 16:05:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_cmp): retry with right hand operand if its not a
-	  time object.  [ruby-dev:35011]
-
-Wed Aug 13 15:51:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* string.c: Apply a temporary fix to fix build on OS X.  A real
-	  fix will follow later.
-
-Wed Aug 13 15:25:09 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (Init_Enumerator): Rename Enumerable::Enumerator to
-	  just Enumerator.
-
-Wed Aug 13 15:13:57 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* common.mk (prelude.c, golf_prelude.c): Using $(COMPILE_PRELUDE)
-	  requires $(RBCONFIG).
-
-Wed Aug 13 15:08:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): make flags argument optional.
-	  (econv_primitive_convert): ditto.
-
-Wed Aug 13 14:55:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* common.mk (realclean-local): Remove parse.h as well.
-
-	* common.mk: Add missing dependencies regarding vm_core.h, id.h,
-	  parse.c (parse.h), etc..
-
-Wed Aug 13 14:45:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans (rb_crlf_newline): new transcoder.
-	  (rb_cr_newline): new transcoder.
-
-	* transcode.c (trans_open_i): one more extra room for input newline
-	  converter.
-	  (rb_trans_open): crlf newline and cr newline implemented.
-	  (Init_transcode): Encoding::Converter::CRLF_NEWLINE and
-	  Encoding::Converter::CR_NEWLINE defined.
-
-Wed Aug 13 14:22:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans: new file.
-
-	* transcode_data.h (rb_trans_t): add last_tc field.
-
-	* transcode.c (UNIVERSAL_NEWLINE): defined.
-	  (CRLF_NEWLINE): defined.
-	  (CR_NEWLINE): defined.
-	  (rb_trans_open_by_transcoder_entries): initialize last_tc.
-	  (trans_open_i): allocate one more room for output newline converter.
-	  (rb_trans_open): universal newline implemented.
-	  (more_output_buffer): take max_output argument instead ts.
-	  (output_replacement_character): take tc argument instead of ts.
-	  (transcode_loop): use last_tc field.
-	  (econv_init): add flags argument for rb_trans_open.
-	  (Init_transcode): Encoding::Converter::UNIVERSAL_NEWLINE defined.
-
-Wed Aug 13 14:00:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c): generates parse.h together.
-
-	* id.c, id.h: use constants for parser tokens.
-
-Wed Aug 13 13:47:05 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: rewind cfp to show proper backtrace.
-	  [ruby-dev:35820]
-
-Wed Aug 13 13:09:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: fix for clean up.
-
-Wed Aug 13 11:45:51 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* vm_core.h: Declare rb_iseq_clone, which is used in class.c.
-
-Wed Aug 13 11:39:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_search_path): return the length of converter
-	  path.
-	  (load_transcoder_entry): renamed from load_transcoder.
-	  (load_transcoder): new function for loading transcoder by encoding
-	  names.
-	  (rb_transcoding_open_by_transcoder): extracted from
-	  rb_transcoding_open.
-	  (rb_transcoding_open): use load_transcoder and
-	  rb_transcoding_open_by_transcoder.
-	  (rb_trans_open_by_transcoder_entries): new function.
-	  (trans_open_i): construct entries array.
-	  (rb_trans_open): use rb_trans_open_by_transcoder_entries.
-
-Wed Aug 13 10:45:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: try to find exported directory.
-
-Wed Aug 13 10:16:35 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* doc/NEWS: Mention the Readline.vi_editing_mode?,
-	  Readline.emacs_editing_mode?, Readline::HISTORY[] and
-	  Readline::HISTORY.clear change.
-
-Wed Aug 13 08:03:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): add output_size argument.
-
-Wed Aug 13 07:41:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_trans_conv): report last transcode_obuf_full.
-	  (econv_max_output): new method Encoding::Converter#max_output.
-
-Wed Aug 13 02:46:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* error.c (rb_eEncCompatError): add Exception.
-
-	* include/ruby/ruby.h: ditto.
-
-	* encoding.c (rb_enc_check): use rb_eEncCompatError.
-
-	* string.c (rb_enc_cr_str_buf_cat): ditto.
-
-	* string.c (rb_str_sub_bang): ditto.
-
-	* string.c (rb_str_hex): ditto.
-
-	* string.c (rb_str_oct): ditto.
-
-Wed Aug 13 02:36:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (str_transcode): fix error message.
-
-Tue Aug 12 23:42:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_cEncodingConverter): new class Encoding::Converter.
-	  (econv_free): new function.
-	  (econv_s_allocate): ditto.
-	  (econv_init): ditto.
-	  (check_econv): ditto.
-	  (econv_primitive_convert): new method.
-	  (Init_transcode): define Encoding::Converter.
-
-Tue Aug 12 23:16:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_splice_0): call rb_str_drop_bytes, not rb_str_drop.
-
-Tue Aug 12 19:11:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: fix for enc.mk.
-
-Tue Aug 12 19:08:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_drop_bytes): new function to drop first bytes.
-
-Tue Aug 12 18:58:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_insnhelper.c (vm_define_method): move
-	  function place.
-
-Tue Aug 12 18:56:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c: more descriptive aliases of rb_str_new[2-5].
-	  [ruby-dev:35615]
-
-Tue Aug 12 18:51:29 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* gc.c (getrusage_time): Returned effective value on Windows.
-
-Tue Aug 12 18:51:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_trans_open): free ts before raise.
-
-Tue Aug 12 18:46:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimalCmp): should not ignore
-	  <=> comparison.  [ruby-dev:35732]
-
-Tue Aug 12 18:43:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/make_transdb.rb: *.erb.c is not used anymore.
-
-Tue Aug 12 18:32:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_trans_elem_t): new field: from and to.
-
-	* transcode.c (trans_open_i): just record from and to.
-	  (rb_trans_open): load transcodings.
-
-Tue Aug 12 18:32:03 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/syslog.c (mSyslog_open): Use of Check_SafeStr() is
-	  deprecated.
-	  (mSyslogConstants_LOG_MASK, mSyslogConstants_LOG_UPTO): Use
-	  NUM2INT() instead of FIX2INT() when the type of an given object
-	  is not determined.
-
-Tue Aug 12 18:14:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb (#transcode_tblgen): slight message
-	  improvement.
-
-Tue Aug 12 17:16:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (trans_open_i): check the result of rb_transcoding_open.
-
-Tue Aug 12 16:23:32 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_result): use rb_str_catf.
-
-Tue Aug 12 16:13:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (TRANSCODE_ERROR): removed.
-
-	* tool/transcode-tblgen.rb: 8bit byte of ASCII-8BIT is a valid
-	  (but unique to ASCII-8BIT) character.
-
-	* transcode.c (rb_eConversionUndefined): new error.
-	  (rb_eInvalidByteSequence): ditto.
-
-Tue Aug 12 16:08:51 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: POP3Command should export @socket since POP
-	  calls #socket.
-
-Tue Aug 12 16:06:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c, util.c (quorem, nrv_alloc, dtoa): enabled floating point
-	  support.
-
-Tue Aug 12 15:52:45 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_result): use sprintf.
-
-Tue Aug 12 15:37:40 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): should check symbol table overflow.
-
-Tue Aug 12 15:31:04 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (send_request_with_body): Content-Length should
-	  be byte length of string. (closes #203)
-
-Tue Aug 12 15:17:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: (transvpath_prefix): prefix has no extension, so replace
-	  %s with "".
-
-Tue Aug 12 15:03:43 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline.rb (TestReadline#test_safe_level_4):
-	  tested Readline.vi_editing_mode? and Readline.emacs_editing_mode?.
-
-Tue Aug 12 14:25:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (.SUFFIXES): renamed to .trans.
-
-	* enc/make_encmake.rb: added --encs and --no-encs options.
-
-	* enc/depend (TRANSVPATH): fix for nmake.
-
-Tue Aug 12 14:19:53 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/https.rb: suppress syntax warning.
-
-Tue Aug 12 14:15:51 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (Net::HTTP#initialize): initialize net/https
-	  variables to suppress syntax warning.
-
-Tue Aug 12 14:15:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cptr.c (rb_dlptr_s_to_ptr): fixed shadowing variable.
-
-Tue Aug 12 10:25:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_delete): Array#delete to return deleted element.
-
-Tue Aug 12 10:18:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/win32ole/test_err_in_callback.rb: do not require 'mkmf'
-	  unless WIN32OLE is defined.
-
-Tue Aug 12 07:41:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): add resetstate_func field for
-	  resetting a state of stateful encoding.
-
-	* enc/trans/iso2022.trans (rb_EUC_JP_to_ISO_2022_JP): specify
-	  finish_eucjp_to_iso2022jp for resetstate_func.
-
-	* tool/transcode-tblgen.rb: specify NULL for resetstate_func.
-
-	* transcode.c (output_replacement_character): call resetstate_func
-	  before appending the replacement character.
-
-Tue Aug 12 07:19:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (get_replacement_character): extracted from
-	  output_replacement_character.
-
-Tue Aug 12 07:00:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): typedef at first.
-
-Tue Aug 12 06:48:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_trans_conv): find second last error.
-
-Tue Aug 12 00:43:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_trans_result_t): new type.
-	  (rb_trans_elem_t): new type.
-	  (rb_trans_t): new type.
-
-	* transcode.c (transcode_dispatch_cb): removed.
-	  (transcode_dispatch): removed.
-	  (rb_transcoding_result_t): moved to rb_trans_result_t in
-	  transcode_data.h.
-	  (transcode_restartable0): goto follow_info when FUNsi.
-	  (rb_transcoding_open): use get_transcoder_entry.
-	  (rb_trans_open): new function.
-	  (rb_trans_conv): ditto.
-	  (rb_trans_close): ditto.
-	  (trans_open_i): ditto.
-	  (trans_sweep): ditto.
-	  (more_output_buffer): take rb_trans_t instead of rb_transcoding as
-	  an argument.
-	  (transcode_loop): take from_encoding and to_encoding instead of tr
-	  as arguments.  use rb_trans_open/rb_trans_conv/rb_trans_close.
-	  (str_transcode): don't use transcode_dispatch.
-
-Mon Aug 11 20:37:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* iseq.c (rb_iseq_clone): should preserve cref_stack link.
-
-Mon Aug 11 20:27:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): add taint check.
-
-	* ext/dl/dl.c (rb_dl_malloc): add rb_secure(2).
-
-	* ext/dl/dl.c (rb_dl_realloc): ditto.
-
-	* ext/dl/dl.c (rb_dl_free): ditto.
-
-	* ext/dl/dl.c (rb_dl_ptr2value): ditto.
-
-Mon Aug 11 20:11:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (getrusage_time): works only if RUSAGE_SELF is defined right
-	  now.
-
-	* gc.c (gc_profile_result): C99.
-
-Mon Aug 11 18:57:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sample): rename #choice to #sample.  in
-	  addition, sample takes optional argument, a la #first.
-
-Mon Aug 11 18:28:02 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: added GC::Profiler.
-
-Mon Aug 11 17:26:16 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/README.ja: added API document for
-	  Readline.vi_editing_mode? and Readline.emacs_editing_mode?.
-
-	* ext/readline/extconf.rb: checked rl_editing_mode variable in
-	  Readline library.
-
-	* ext/readline/readline.c (readline_s_emacs_editing_mode_p): added
-	  Readline.emacs_editing_mode? method.
-	  (readline_s_vi_editing_mode_p): added Readline.vi_editing_mode?
-	  method.
-	  (Init_readline): ditto.
-
-Mon Aug 11 16:56:40 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline.rb: added test for Readline's class
-	  methods.
-
-Mon Aug 11 16:39:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (clone_method): should copy cbase in cref as well.
-	  [ruby-dev:35116]
-
-	* iseq.c (iseq_mark): mark original iseq object.
-
-	* iseq.c (iseq_free): do not free internal data if they have
-	  original iseq to belong.
-
-	* iseq.c (rb_iseq_clone): a new function to clone iseq value.
-
-Mon Aug 11 16:34:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/iso2022.trans: renamed from iso2022.erb.c.
-
-	* enc/trans/single_byte.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/korean.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-	* enc/depend: follow the renaming.
-
-	* tool/build-transcode: ditto.
-
-Mon Aug 11 15:09:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (rb_cv_broken_glibc_ia64_erfc): renamed from
-	  rb_broken_glibc_ia64_erfc.
-	  [ruby-core:18228]
-
-Mon Aug 11 10:04:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): rename fields.
-	  readlen -> recognized_len.
-	  feedlen -> readagain_len.
-
-	* transcode.c: follow the field renaming.
-
-Sun Aug 10 22:34:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable0): invalid handling simplified.
-	  (transcode_restartable): use PARTIAL_INPUT for converting buffered
-	  input.
-
-Sun Aug 10 22:24:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* encoding.c: include util.h.  [ruby-dev:35715]
-
-	* common.mk: ditto.
-
-Sun Aug 10 20:59:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): new field: flags.
-
-	* transcode.c (load_transcoder): extracted from transcode_dispatch_cb.
-	  (rb_transcoding_result_t): renamed from transcode_result_t.
-	  (rb_transcoding_open): new function.
-	  (rb_transcoding_convert): ditto.
-	  (rb_transcoding_close): ditto.
-	  (transcode_loop): use rb_transcoding_open, rb_transcoding_convert
-	  and rb_transcoding_close.
-	  (str_transcode): don't need rb_transcoding.
-
-Sun Aug 10 18:09:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: record checksum of
-	  transcode-tblgen.rb itself.
-
-Sun Aug 10 12:34:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* config.guess ({powerpc-apple,i586-pc}-haiku): re-applied r18403.
-	  [ruby-core:18110]
-
-	* config.{guess,sub}: updated to automake-1.10.1.
-
-Sun Aug 10 11:45:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (make-workdir): use MAKEDIRS.
-
-	* enc/depend: makes target directory before compile/link.
-
-	* tool/transcode-tblgen.rb: creates target directory.
-
-Sun Aug 10 11:30:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c: rename my_transcoding to tc and my_transcoder to tr.
-
-Sun Aug 10 11:15:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): add feedlen field.
-
-	* transcode.c (transcode_restartable0): renamed from
-	  transcode_restartable.
-	  save input buffer into feed buffer if next character is started the
-	  point before input buffer.  for example, "\x00\xd8\x01" then "\x02"
-	  in UTF-16LE.  \x02 causes invalid and next character is started from
-	  \x01.
-	  (transcode_restartable): new function to call
-	  transcode_restartable0.  if feed buffer is not empty, convert it at
-	  first.
-
-Sun Aug 10 11:02:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (extconf): use MAKEDIRS.
-
-Sun Aug 10 09:35:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb#inspect): instance_variables returns symbols
-	  instead of strings now.  [ruby-dev:34930]
-
-Sun Aug 10 09:22:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_char_start): refactored to remove readlen
-	  argument.
-	  (transcode_restartable): refactored to remove readlen variable.
-
-Sun Aug 10 08:56:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (STACK_LEVEL_MAX, ruby_stack_length): returns size_t.
-	  [ruby-core:18207]
-
-	* configure.in (rb_cv_missing__dtos18, rb_cv_missing_fconvert),
-	  ext/digest/md5/md5.c, ext/openssl/ossl.c (main),
-	  ext/socket/extconf.rb (ipv6, wide-getaddrinfo): main should be int.
-
-	* main.c (main), win32/winmain.c, wince/wincemain.c (WinMain): envp is
-	  no longer used so long time.  based on a patch from Peter Bowen at
-	  [ruby-core:18208]
-
-Sat Aug  9 22:05:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_loop): take destination and resize function
-	  as parameters.
-	  (more_output_buffer): ditto.
-	  (str_transcoding_resize): argument changed from rb_transcoding* to
-	  VALUE.
-	  (str_transcode): call transcode_loop with destination string and its
-	  resize function.
-
-	* transcode_data.h (rb_transcoding): move ruby_string_dest and
-	  flush_func to transcode_loop parameters.
-
-Sat Aug  9 21:29:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: encs depend on transdb.h
-
-Sat Aug  9 21:10:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_rshift_sign, rb_cv_binary_elf): get rid of
-	  AC_TRY_RUN.
-
-Sat Aug  9 16:33:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): new fields: next_info and next_byte.
-
-	* transcode.c (transcode_restartable): save/restore next_info and
-	  next_byte.
-	  sync readlen and in_p when invalid.
-
-Sat Aug  9 15:10:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable): my_transcoder argument removed.
-	  (transcode_loop): my_transcoder argument removed.
-
-Sat Aug  9 14:39:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): add fields for restartable
-	  transcoding.
-	  (rb_transcoder): add max_input field.
-	  from_unit_length field is renamed to input_unit_length.
-
-	* tool/transcode-tblgen.rb: generate max_input field.
-
-	* enc/trans/iso2022.erb.c: follow rb_transcoder change.
-
-	* enc/trans/utf_16_32.erb.c: ditto.
-
-	* transcode.c (PARTIAL_INPUT): new constant.
-	  (transcode_char_start): new function.
-	  (transcode_result_t): new type.
-	  (transcode_restartable): new function.
-	  (more_output_buffer): new function.
-	  (transcode_loop): use transcode_restartable.
-
-Sat Aug  9 13:35:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* stable/ext/socket/socket.c (NI_MAXHOST, NI_MAXSERV): fixed invalid
-	  preprocessor directives.  a patch from Peter Bowen at
-	  [ruby-core:18211].
-
-Sat Aug  9 06:37:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/make_encdb.rb, enc/trans/make_transdb.rb: skip nonexistent
-	  directory.  [ruby-dev:35802]
-
-Sat Aug  9 01:07:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/utf_16_32.erb.c (fun_so_from_utf_32le): implemented.
-	  (fun_so_to_utf_32le): implemented.
-	  [ruby-dev:35777]
-
-Sat Aug  9 00:42:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): from_unit_length field added.
-	  from_utf8 field removed.
-
-	* tool/transcode-tblgen.rb: generate offsets range.
-	  follow rb_transcoder change.
-
-	* transcode.c (transcode_loop): don't use from_utf8.
-	  make invalid region from_unit_length wise.
-
-	* enc/trans/iso2022.erb.c: follow rb_transcoder and
-	  transcode_generate_node change.
-
-	* enc/trans/utf_16_32.erb.c: follow rb_transcoder and
-	  transcode_generate_node change.
-	  explicit :invalid map removed.
-
-Fri Aug  8 23:29:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (TRANSCSRCS): needs rule_subst to apply.
-
-	* io.c (shutdown): not define if defined already.
-
-Fri Aug  8 22:47:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (opt_eq_func): large function to make inline.
-
-	* bcc32/Makefile.sub (config.h): cannot compile a big inline function.
-
-Fri Aug  8 21:09:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (enk.mk): give not RUBY but MINIRUBY.
-
-Fri Aug  8 17:03:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (shutdown, sched_yield, pthread_attr_setinheritsched):
-	  check for Haiku.
-
-	* eval_intern.h, io.c, thread_pthread.c: use autoconfisticated results.
-
-Fri Aug  8 16:52:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (enc.mk): mkmf.rb requires rbconfig.rb.
-
-	* common.mk (srcs-enc): renamed from transcodes.
-
-	* enc/Makefile.in (make-workdir): creates object directories.
-
-	* common.mk (encdb.h): see both $(srcdir)/enc and enc.
-
-	* enc/make_encdb.rb: ditto.
-
-	* enc/trans/make_transdb.rb: fix for the case no transdirs are given.
-
-	* enc/trans/make_transdb.rb: converts only one transcoders for each
-	  basename.
-
-Fri Aug  8 10:53:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb: randomize source port and transaction id.
-	  CVE-2008-1447.
-
-	* lib/resolv-replace.rb (UDPSocket#bind): don't resolv host if host is
-	  "".
-
-Fri Aug  8 04:20:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: see both $(srcdir)/enc/trans and enc/trans.
-
-	* enc/trans/make_transdb.rb: ditto.
-
-Fri Aug  8 00:05:02 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/.document: added readline/readline.c.
-
-	* ext/readline/readline.c: changed Copyright. added RDoc.
-
-	* ext/readline/README.ja: fixed typo.
-
-	* ext/readline/README: contents was moved RDoc.
-
-Thu Aug  7 23:43:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): new field "stateful".
-	  (rb_transcoder): preprocessor and postprocessor field removed.
-	  change arguments of func_ii, func_si, func_io and func_so.
-	  new field "finish_func".
-
-	* tool/transcode-tblgen.rb: make FUNii, FUNsi and FUNio
-	  generatable.
-
-	* transcode.c (transcoder_lib_table): removed.
-	  (transcoder_table): change structure.
-	  (transcoder_key): removed because the above structure change.
-	  (make_transcoder_entry): new function.
-	  (get_transcoder_entry): ditto.
-	  (rb_register_transcoder): follow the structure change.
-	  (declare_transcoder): ditto.
-	  (transcode_search_path): new function for breadth first search to
-	  find a list of converters.
-	  (transcode_search_path_i): new function.
-	  (transcode_dispatch_cb): ditto.
-	  (transcode_dispatch): use transcode_search_path.
-	  (transcode_loop): follow the argument change.
-	  (str_transcode): preprocessor and postprocessor stuff removed.
-
-	* enc/trans/iso2022.erb.c: new file.  ISO-2022-JP conversion
-	  re-implemented.
-
-	* enc/trans/japanese.erb.c: ISO-2022-JP stuff removed.
-
-	* enc/trans/utf_16_32.erb.c: follow argument change of FUNso.
-
-	[ruby-dev:35798]
-
-Thu Aug  7 22:55:44 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/README.ja: updated API document for Readline module.
-
-Thu Aug  7 20:52:08 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (login): raise FTPReplyError if passwd or acct
-	  is not supplied.  fixed [ruby-core:18058].
-
-Thu Aug  7 18:01:44 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* misc/ruby-mode.el (ruby-imenu-create-index-in-block): Fix the
-	  regexp to only pick definition lines properly.  `module_function'
-	  is not a definition of a module named `_function'.
-
-Thu Aug  7 17:47:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: add transdb.c.
-
-Thu Aug  7 16:28:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk, {bcc,win}32/Makefile.sub (clean-ext): do not
-	  use miniruby.
-
-Thu Aug  7 14:17:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: removed needless explicit commands.
-
-	* lib/mkmf.rb, {bcc32,win32}/Makefile.sub (CLEANLIBS, CLEANOBJS):
-	  moved clean targets to platform makefiles.
-
-Thu Aug  7 13:12:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/getaddrinfo.c (gai_strerror): ignore only on Haiku.
-	  a patch from <zn at mbf.nifty.com>, [ruby-dev:35796].
-
-Thu Aug  7 06:31:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/process.rb (test_popen_fork): skip a test which is
-	  freeze in FreeBSD.
-
-Thu Aug  7 06:05:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* config.guess: add powerpc-apple-haiku, i586-pc-haiku.
-	  see [ruby-core:18110]
-
-Thu Aug  7 05:51:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* eval_intern.h: Add support to Haiku. see [ruby-core:18110]
-
-	* include/ruby/defines.h: ditto.
-
-	* configure.in: ditto.
-
-	* thread_pthread.c: ditto.
-
-	* io.c: ditto.
-
-	* lib/mkmf.rb: ditto.
-
-	* ext/socket/getaddrinfo.c: ditto.
-
-	* ext/socket/extconf.rb: ditto.
-
-	* ext/socket/socket.c: ditto.
-
-	* ext/socket/addrinfo.h: ditto.
-
-	* ext/socket/getnameinfo.c: ditto.
-
-Thu Aug  7 05:43:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: mkdir enc/trans before build tables.
-
-Thu Aug  7 05:18:30 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/depend: enc/*.c is source but enc/trans/*.c is generated.
-
-Thu Aug  7 05:14:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regenc.c (code_to_mbc): raise RangeError Integer#chr
-	  when more than 255 is given with single byte encoding.
-	  [ruby-dev:35789]
-
-Thu Aug  7 05:06:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (run_final): runs finalizers with the object terminated.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): keeps finalized objects from
-	  linking to freelist.
-
-Thu Aug  7 04:43:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/depend: for build in other than srcdir.
-
-Wed Aug  6 22:40:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_generate_node): code
-	  argument removed.
-
-Wed Aug  6 21:25:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (chain_finalized_object): deletes finalizers to be invoked from
-	  finalizer_table.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): warns when could not invoke
-	  finalizers.
-
-Wed Aug  6 20:56:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/depend: transcode table generation depends on
-	  tool/transcode-tblgen.rb.
-
-Wed Aug  6 20:48:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): self-referencing finalizers
-	  cannot be invoked.  [ruby-dev:35681]
-
-Wed Aug  6 20:44:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: distinguish UNDEF and INVALID.
-	  [ruby-dev:35709]
-
-	* transcode.c (transcode_loop): don't need rb_enc_mbclen now.
-
-Wed Aug  6 14:40:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (transdb.h): requires transcoders.
-
-	* enc/depend (srcs): target for transcoders.
-
-Wed Aug  6 14:04:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: replace not only $(<:...) but also $<.
-
-Wed Aug  6 13:54:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): export BASERUBY.
-
-	* enc/depend: avoid GNU make'ism.
-
-Wed Aug  6 07:59:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#eql?): use == to compare @map.
-
-Wed Aug  6 07:45:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: show generating tables in verbose mode.
-	  (transcode_generate_node): call ActionMap#generate_node with showing
-	  table name.
-
-	* enc/trans/utf_16_32.erb.c: use transcode_generate_node.
-
-Wed Aug  6 06:55:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): propagates fatal error and system
-	  exit to the main thread.
-
-Wed Aug  6 05:31:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding_index, rb_to_encoding): check if the name
-	  is ascii compatible as well as Encoding.find.
-
-	* transcode.c (str_encode): no need to duplicate first.
-
-Wed Aug  6 05:08:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): reset to real class.
-
-	* file.c (rb_find_file_ext, rb_find_file): ditto.
-
-	* io.c (io_reopen): ditto.
-
-Wed Aug  6 03:56:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (transcodes), tool/build-transcode: generates transcode
-	  sources.
-
-	* enc/trans/{japanese,korean,single_byte,utf_16_32}.c: to be
-	  autogenerated now.
-
-	* enc/depend: added rules for .c from .erb.c.
-
-Tue Aug  5 20:46:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/build-transcode: new file.
-
-	* tool/transcode-tblgen.rb: new file.
-
-	* enc/trans/make_transdb.rb: exclude *.erb.c.
-
-	* enc/depend: exclude *.erb.c.
-
-	* enc/trans/utf_16_32.erb.c: new file.
-
-	* enc/trans/single_byte.erb.c: new file.
-
-	* enc/trans/japanese.erb.c: new file.
-
-	* enc/trans/korean.erb.c: new file.
-
-	* enc/trans/iso-8859-2-tbl.rb: new file.
-
-	* enc/trans/iso-8859-3-tbl.rb: new file.
-
-	* enc/trans/iso-8859-4-tbl.rb: new file.
-
-	* enc/trans/iso-8859-5-tbl.rb: new file.
-
-	* enc/trans/iso-8859-6-tbl.rb: new file.
-
-	* enc/trans/iso-8859-7-tbl.rb: new file.
-
-	* enc/trans/iso-8859-8-tbl.rb: new file.
-
-	* enc/trans/iso-8859-9-tbl.rb: new file.
-
-	* enc/trans/iso-8859-10-tbl.rb: new file.
-
-	* enc/trans/iso-8859-11-tbl.rb: new file.
-
-	* enc/trans/iso-8859-13-tbl.rb: new file.
-
-	* enc/trans/iso-8859-14-tbl.rb: new file.
-
-	* enc/trans/iso-8859-15-tbl.rb: new file.
-
-	* enc/trans/eucjp-tbl.rb: new file.
-
-	* enc/trans/sjis-tbl.rb: new file.
-
-	* enc/trans/euckr-tbl.rb: new file.
-
-	* enc/trans/utf_16_32.c: regenerated.
-
-	* enc/trans/single_byte.c: regenerated.
-
-	* enc/trans/japanese.c: regenerated.
-
-	* enc/trans/korean.c: regenerated.
-
-	[ruby-dev:35730]
-
-Tue Aug  5 18:02:53 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/io/nonblock/test_flush.rb (TestIONonblock#test_flush):
-	  rescue some exceptions. [ruby-dev:35638]
-
-Tue Aug  5 16:40:06 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (chdir): handle 5xx errors correctly.
-	  fixed [ruby-core:18057].
-
-Tue Aug  5 16:38:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h, bcc32/Makefile.sub (config.h): bcc 5.8 has
-	  stdint.h.
-
-Tue Aug  5 16:13:05 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (disconnect): do not refer SSL::SSLSocket for
-	  environments without OpenSSL. fixed [ruby-dev:35755].
-
-Tue Aug  5 14:19:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_stat_mode): generalized st_mode mask.
-
-Tue Aug  5 12:43:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (retry_sendfile, retry_read): ENOSYS and EWOULDBLOCK are not
-	  defined on every platforms.
-
-Tue Aug  5 12:34:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode_data.h (TRANSCODE_ERROR): common transcode failure
-	  exception, would be changed later.
-
-	* enc/trans/japanese.c (UNSUPPORTED_MODE): unsupported mode transition
-	  exception.
-
-Tue Aug  5 03:29:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): respect overridden <=> for String and
-	  Fixnum.  [ruby-core:17708]
-
-	* include/ruby/node.h (NOEX_BASIC): basic definition method flag.
-
-	* include/ruby/intern.h, vm_method.c (rb_method_basic_definition_p):
-	  new function to check if the method is not redefined after the
-	  initialization.
-
-	* vm_method.c (rb_obj_respond_to): use rb_method_basic_definition_p.
-
-Mon Aug  4 20:39:06 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Makefile.in (update-rubyspec): renamed the rubyspec directory
-	  "spec". Changed directory structure.
-
-	* Makefile.in (test-rubyspec): ditto.
-
-	* spec/README: described the structure of "spec" directory.
-
-	* spec/default.mspec: configured for Matz's Ruby Implementation.
-
-Mon Aug  4 19:21:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_tmp_new): added.
-
-	* vm_eval.c (vm_call_super): fixed typo, and get rid of too large
-	  alloca.  [ruby-core:17922]
-
-Mon Aug  4 16:48:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (deferred_nodes, compstmt, arg, fixup_nodes, range_op): fix
-	  up fixnum range literal in conditional as automagical line number
-	  comparison.  [ruby-core:12124], [ruby-dev:35731]
-
-Mon Aug  4 14:41:25 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP::rcptto): fix a typo. a patch from
-	  Masao Takaku <masao at nii.ac.jp>
-	  fix [ruby-dev:35489].
-
-Mon Aug  4 14:08:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (dump_ensure), process.c (run_exec_dup2),
-	  string.c (rb_str_replace), transcode.c (transcode_dispatch): fixed
-	  memory leaks.  based on patches from shinichiro.h <shinichiro.hamaji
-	  AT gmail.com> at [ruby-dev:35751].
-
-Sun Aug  3 19:32:52 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (hash2named_arg): refactoring.
-
-	* ext/win32ole/win32ole.c (ole_invoke, fole_respond_to, ev_on_event,
-	  fev_off_event): accepts Symbol argument.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Sun Aug  3 10:41:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_shared_replace): fixed memory leak.  a patch from
-	  shinichiro.h <shinichiro.hamaji AT gmail.com> at [ruby-dev:35742]
-
-Sat Aug  2 22:55:41 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_err_in_callback.rb: remove temporary files.
-	  some refactoring.
-
-Sat Aug  2 15:51:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yylex): 8 and 9 in octal integer should cause compile
-	  error.  [ruby-dev:35729]
-
-Sat Aug  2 01:06:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add U+FF5E to EUC-JP.
-	  [ruby-dev:35720] [ruby-dev:35722]
-
-Fri Aug  1 23:49:44 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/extconf.rb: checked to have clear_history in
-	  readline library.
-	* ext/readline/readline.c (hist_get, hist_each, Init_readline):
-	  The offset specified for the argument of history_get() might be
-	  different in GNU Readline and libedit. If use libedit, it was
-	  corrected that the computational method of the offset specified
-	  for the argument of history_get() when the Readline module was
-	  initialized was decided.
-	  (hist_get, hist_set): If use libedit, accesses first an input
-	  content in history when specifies the negative offset for the
-	  argument of history_get() or replace_history_entry(). Then
-	  checks the offset is negative in ruby.
-	  (rb_remove_history): When compiling, it corrects it to warning
-	  when libedit is used.
-	  (hist_clear, Init_readline): added Readline::HISTORY.clear
-	  method. [ruby-dev:35551]
-	* test/readline/test_readline_history.rb: added unit test for
-	  Readline::HISTORY.
-
-Fri Aug  1 23:26:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (transcode_loop): undefined character is replaced with
-	  only one character. [ruby-dev:35709]
-
-Fri Aug  1 23:26:22 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	Merged r16430(akr), r16431(akr), r16433(akr), r16469(nobu), and
-	r17874(akr) from ruby_1_8.
-
-	* Makefile.in (update-rubyspec): added
-
-	* Makefile.in (test-rubyspec): added
-
-Fri Aug  1 23:16:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add support for CP51932,
-
-Fri Aug  1 22:59:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add U+FF0C,
-
-Fri Aug  1 21:49:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/sdbm/test_sdbm.rb: add some tests.
-
-Fri Aug  1 21:36:00 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (allocate_heaps, assign_heap_slot, rb_newobj_from_heap):
-	  reset during_gc before raising NoMemoryError.
-
-Fri Aug  1 21:29:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (Init_BareVM): check failure of malloc().
-
-Fri Aug  1 20:55:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c (to_SHIFT_JIS_EF_BF_offsets): add U+FFF3,
-	  U+FFF4, U+FFF5.
-
-	* enc/trans/japanese.c (to_SHIFT_JIS_EF_BF_infos): ditto.
-
-	* enc/trans/japanese.c (to_EUC_JP_EF_BF_infos): added.
-
-	* enc/trans/japanese.c (to_EUC_JP_EF_BF): added.
-
-	* enc/trans/japanese.c (to_EUC_JP_EF_infos): change size.
-	  [ruby-dev:35714]
-
-Fri Aug  1 18:27:15 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* parse.y (parser_yylex): removed an useless conditional, and magic
-	  comment are ignored unless at the first of line.
-
-	* test/ruby/test_m17n.rb (test_magic_comment_vim): added.
-
-	* test/ruby/test_m17n.rb (test_magic_comment_at_various_positions):
-	  added.
-
-Fri Aug  1 14:54:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_seekdir): no need to rewind to seek forward.
-
-Fri Aug  1 05:31:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (output_replacement_character):
-	  rename from _get_replacement_character.
-
-	* transcode.c (output_replacement_character):
-	  fix replacement on UTF-32{BE,LE}. [ruby-dev:35705]
-
-	* transcode.c (transcode_loop): ditto.
-
-	* test/ruby/test_transcode.rb (test_invalid_replace):
-	  add for above.
-
-Fri Aug  1 01:01:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (rb_proc_call_with_block): reduce comparison.
-
-Wed Jul 30 21:08:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/syck.c (syck_free_parser): fix memory leak by
-	  YAML::Syck.compile.
-
-Thu Jul 31 22:17:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpMult): prevent memory leak.
-
-Thu Jul 31 20:05:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_transcode.rb (test_unicode_public_review_issue_121):
-	  fix option1 and 3.
-
-Thu Jul 31 19:54:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (get_replacement_character): use U+FFFD as replacement
-	  character when convert to Unicode.
-
-	* test/ruby/test_transcode.rb (test_unicode_public_review_issue_121):
-	  rename from test_public_review_issue_121.
-
-	* test/ruby/test_transcode.rb (test_unicode_public_review_issue_121):
-	  enable option2.
-
-Thu Jul 31 17:00:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (get_replacement_character): fix: invalid byte sequence
-	  is always replaced "\x00?".
-
-Thu Jul 31 16:37:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/rubygems/test_gem_ext_configure_builder.rb
-	  (test_self_build_fail): remove extra newline. [ruby-dev:35704]
-
-Thu Jul 31 15:11:11 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added test_shift_jis
-	  (contributed by Yoshihiro Kambayashi) and
-	  test_public_review_issue_121
-	  (see http://www.unicode.org/review/pr-121.html)
-
-Thu Jul 31 13:18:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/ruby.h (struct RString): size of ary must be
-	  RSTRING_EMBED_LEN_MAX + 1.
-
-Thu Jul 31 12:23:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_unpack): upper half of hexdigits has never been used.
-
-Thu Jul 31 11:31:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/syck.h (ASSERT): fix typo at r18176.
-
-	* ext/syck/rubyext.c (rb_syck_compile): expression in ASSERT() has no
-	  effect unless debug mode.
-
-Thu Jul 31 10:51:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (ruby_iseq_disasm_insn): suppress warnings on platforms which
-	  int size differs from pointer size.
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_get_asn1type): ditto
-
-	* ext/syck/rubyext.c (rb_syck_err_handler),
-	  (syck_default_error_handler): ditto.
-
-Thu Jul 31 02:21:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/rubyext.c (rb_syck_compile): remove meaningless branch
-	  that misleads into thinking that the variable sav may be
-	  uninitialized.
-
-Thu Jul 31 01:25:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_mutex_unlock_all): mutex is no longer a ruby object.
-
-Thu Jul 31 01:18:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (magic_comment_encoding): remove meaningless null check.
-
-Thu Jul 31 01:09:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpIsRoundMode): fix tautology
-	  condition.
-
-Thu Jul 31 00:58:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_unpack): reduced static variables.
-
-Thu Jul 31 00:10:20 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (rb_proc_call_with_block): prevent null reference.
-
-Wed Jul 30 22:19:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (vtable_free): remove meaningless null check.
-
-Wed Jul 30 22:08:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c (struct dir_data): change path field char * to VALUE.
-	  (mark_dir): new function for mark path field.
-	  (free_dir): follow the path field change.
-	  (dir_s_alloc): ditto.
-	  (dir_initialize): ditto.
-	  (dir_s_open): ditto.
-	  (dir_inspect): ditto.
-	  (dir_path): return (duplicate of) the path field to preserve
-	  encoding.  [ruby-dev:35685]
-
-Wed Jul 30 22:06:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (sym_inspect): remove dead code.
-
-Wed Jul 30 21:32:52 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ChangeLog: fix wrong method name and add reference.
-
-Wed Jul 30 21:30:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regparse.c (name_add): fix memory leak.
-
-Wed Jul 30 21:08:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regparse.c (parse_exp): fix memory leak at Regexp.new("x{1,1}").
-
-Wed Jul 30 17:48:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_select): recalc the rest of timeout for each
-	  iterations.  [ruby-core:18015]
-
-Tue Jul 29 23:37:37 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (io_ungetc): raise NotImplementedError when ungetc is called
-	  against dummy encoding IO.  [ruby-dev:35686]
-
-	* io.c (rb_io_getline_1): ditto when gets with delimiter is called.
-
-	* io.c (io_getc): ditto when getc is called.
-
-	* test/ruby/test_io_m17n.rb (test_terminator_stateful_conversion,
-	  test_getc_stateful_conversion, test_ungetc_stateful_conversion):
-	  these tests should raise NotImplementedError.
-
-Tue Jul 29 22:55:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_io.rb (pipe): run reader thread and writer thread.
-
-Tue Jul 29 21:38:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (Init_bigdecimal): fix typo.
-
-Tue Jul 29 21:35:59 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb (test_passwd): age field may be string under
-	  some environments.
-
-Tue Jul 29 17:54:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (char_casecmp): fix: return 0 if either of characters is NUL.
-
-Tue Jul 29 13:17:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/etc/test_etc.rb (test_getpwuid): fix for users whose uid is
-	  shared.
-
-Tue Jul 29 05:37:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): explicit relative path
-	  which starts with "./" or "../" should be searched from cwd
-	  instead of load path.  [ruby-dev:35673]
-
-Tue Jul 29 02:39:46 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* math.c (math_atanh): raise EDOM on FreeBSD when atanh(1).
-
-	* math.c (math_log): ditto.
-
-	* math.c (math_log2): ditto.
-
-	* math.c (math_log10): ditto.
-
-	* test/ruby/test_math.rb: test for above.
-
-Tue Jul 29 01:41:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c (struct dir_data): intenc field removed.
-	  (dir_s_alloc): intenc initialization removed.
-	  (dir_initialize): :internal_encoding option removed.  dirname code
-	  conversion removed.
-	  (dir_enc_str): code conversion removed.
-	  [ruby-dev:35661]
-
-Mon Jul 28 21:32:17 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/: use PNG instead of zlib as binary data.
-
-Mon Jul 28 21:24:33 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.[ch] (cond_every_entry, rb_thread_cond_struct): reverted
-	  r18239 because r18245 made the changes unnecessary.
-
-	* thread.c (rb_mutex_struct): define after including thread_{pthread,
-	  win32}.c.
-
-Mon Jul 28 21:00:10 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_require.rb (test_require_too_long_filename):
-	  Kernel#require does not use dln_find_file_r (at r18242).
-
-Mon Jul 28 20:17:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_core.h: move the definition of struct rb_mutex_struct.
-
-	* thread.c: ditto.
-
-Mon Jul 28 18:58:46 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_unlock): fix typo.
-
-Mon Jul 28 18:15:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): not to split load path with
-	  path separator.  [ruby-Bugs-21356]
-
-Mon Jul 28 18:14:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (overlapped_socket_io, fcntl, rb_w32_close): must not
-	  pass a pointer to int which is smaller than st_data_t on mswin64.
-
-Mon Jul 28 16:49:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (CreateChild, overlapped_socket_io): suppress
-	  warnings.
-
-Mon Jul 28 16:06:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (MAXPATHLEN): define before use.
-
-Mon Jul 28 16:01:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.[ch] (cond_every_entry, rb_thread_cond_struct): moved
-	  the definitions from .c to .h because rb_thread_cond_struct is used
-	  in vm_core.h.
-
-Mon Jul 28 14:29:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (load_lib): use dln_find_file_r instead of dln_find_file.
-
-Mon Jul 28 00:18:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_core.h, thread.c: It is now prohibited to use Data_Get_Struct in
-	  *_free against an object that is going to be free'ed.  So, change type
-	  of thread_t#keeping_mutexes from VALUE to mutex_t.
-
-	* vm.c: remove mark to keeping_mutexes.
-
-Sun Jul 27 23:32:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/openssl/test_ssl.rb (server_loop): rescue Errno::EINVAL and
-	  Errno::ECONNABORTED.
-
-Sun Jul 27 22:11:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* bootstraptests/method.rb: increase RLIMIT_STACK size to 4M+8Kbytes
-	  because FreeBSD fails this less than that.
-
-Sun Jul 27 21:45:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (gc_mark_children, obj_free): T_DEFERRED should not be appear.
-
-	* gc.c (gc_sweep, finalize_list): fix to decrement heap_slot#limit
-	  after executing finalizer.
-
-Sun Jul 27 14:48:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h: add a type T_DEFERRED.
-
-	* gc.c: fix deferred finalizer system.  finalize processes of
-	  T_DATA and T_FILE are executed after gc process.
-	  And fix to use BUILTIN_TYPE() instead of seeing flag.
-
-	* thread.c, vm_core.h: add RUBY_VM_SET_FINALIZER_INTERRUPT()
-	  and check interrupt_flag at rb_thread_execute_interrupts().
-
-	* thread.c (mutex_mark): fix to mark next_mutex.
-
-	* vm.c (rb_thread_mark): fix to mark keeping_mutexes.
-
-Sun Jul 27 09:15:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.h (dln_find_exe, dln_find_file): deprecated, use reentrant
-	  versions instead.
-
-Sun Jul 27 09:02:32 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/tuplespace.rb: merged from 1.8.
-
-	* test/rinda/test_rinda.rb: merged from 1.8.
-
-Sat Jul 26 22:45:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* sample/exyacc.rb: fixed NoMethodError(Kernel#sub!).
-	  replaced use of special variables with explicit IO
-	  operations.
-
-Sat Jul 26 21:17:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): add
-	  WIN32OLE_EVENT#handler=, WIN32OLE_EVENT#handler
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Sat Jul 26 07:44:14 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (add_event_call_back): remove unused
-	  variable.
-
-Fri Jul 25 23:48:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_sweep, obj_free, run_final): defer finalizers of IO and
-	  Data.  [ruby-dev:35578]
-
-Fri Jul 25 23:35:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils#split_header_value):
-	  reduce backtrack.  based on a fix by Christian Neukirchen
-	  <chneukirchen AT gmail.com>.
-
-Fri Jul 25 21:55:38 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/enc/test_koi8.rb: move from test/ruby/test_koi8.rb.
-
-Fri Jul 25 21:09:32 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke, add_event_callback,
-	  rescue_callback): refactoring.
-
-Fri Jul 25 20:52:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/err_in_callback.rb: add test of raising
-	  exception in WIN32OLE_EVENT callback.
-
-	* test/win32ole/test_err_in_callback.rb: ditto.
-
-Fri Jul 25 20:43:57 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): add
-	  WIN32OLE_EVENT#off_event.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-	* test/win32ole/test_win32ole_event.rb: some refactoring.
-
-Fri Jul 25 19:50:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regint.c (xmalloc, xrealloc, xfree): not to use ruby managed memory.
-
-Fri Jul 25 15:52:40 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (vm_invoke_proc): skip setting safe_level if
-	  it from bmethod.  This change makes test/ruby/test_proc.rb pass.
-
-Fri Jul 25 10:00:00 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: refactoring/cleanup of
-	  test_iso_2022_jp(_1)
-
-Fri Jul 25 04:12:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_convert): output of mime encode is US-ASCII.
-	  [ruby-list:45257]
-
-Fri Jul 25 02:43:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sample/coverage.rb: move from lib/coverage.rb because this remains in
-	  an early phase of development.
-
-Fri Jul 25 00:10:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): converts Windows style path
-	  to Cygwin path.  [ruby-dev:35647]
-
-Thu Jul 24 16:30:21 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (exit_handler): use st_free_table() to free socklist.
-
-	* win32/win32.c (rb_w32_pipe_exec, rb_w32_accept, rb_w32_socket,
-	  rb_w32_socketpair): should check and release fd and sockets/handles
-	  if an error occurs in rb_w32_open_osfhandle().
-
-Thu Jul 24 16:05:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (overlapped_socket_io): avoid warnings.
-
-	* thread_win32.c (ubf_handle): refactoring.
-
-Thu Jul 24 07:01:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c: got rid of improper casts.
-
-Wed Jul 23 23:19:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/socket/test_tcp.rb (test_recvfrom): replace an irrelevant test
-	  for old behavior.
-
-Wed Jul 23 21:38:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_marshal.rb: suppress warning during test.
-
-Wed Jul 23 21:35:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_dir.rb: suppress warning during test.
-
-Wed Jul 23 18:27:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/{stubs,tcltklib}.c, ext/tk/tkutil/tkutil.c: fix warnings
-	  about constness and signedness.
-
-Wed Jul 23 17:04:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/openssl_missing.h (d2i_of_void): define for older
-	  versions.  [ruby-dev:35637]
-
-Wed Jul 23 13:53:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/curses/extconf.rb: use try_static_assert.
-
-Wed Jul 23 10:06:19 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/zlib/test_zlib.rb (TestZlibDeflate#test_params): suppress a
-	  finalizer warning.
-
-Wed Jul 23 06:25:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck: suppress warnings more.
-
-Wed Jul 23 03:19:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (struct input_code.name, input_codename):
-	  constified.
-
-Wed Jul 23 03:02:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck: suppress warnings.
-
-Wed Jul 23 00:34:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl: suppress warnings.
-
-Tue Jul 22 23:01:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/rubyext.c, ext/syck/yaml2byte.c, ext/syck/emitter.c,
-	  ext/syck/syck.c, ext/syck/handler.c, ext/syck/syck.h: suppress GCC
-	  warning.
-
-Tue Jul 22 20:42:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimalCmp): BigDecimal#<=> should
-	  return nil if an argument can't be coerced into BigDecimal.
-
-	* ext/bigdecimal/bigdecimal.h, ext/bigdecimal/bigdecimal.c
-	  (VpIsNegDoubleZero, VpItoV): comment out unused functions.
-
-Tue Jul 22 20:33:54 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_parser_ruby.rb (teardown): close tempfile.
-
-Tue Jul 22 19:38:38 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added two comments
-
-Tue Jul 22 18:08:34 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja: mention about FIX2LONG and NUM2LONG.
-	  see [ruby-dev:35197]
-
-Tue Jul 22 17:53:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (insn_data_to_s_detail), file.c (rb_stat_inspect),
-	  iseq.c (ruby_iseq_disasm_insn, ruby_iseq_disasm),
-	  process.c (pst_message), re.c (match_inspect): use rb_str_catf.
-
-	* dir.c (dir_inspect), iseq.c (iseq_inspect, insn_operand_intern): use
-	  rb_sprintf.
-
-	* error.c (rb_name_error, rb_raise, rb_loaderror, rb_fatal): use
-	  rb_vsprintf.
-
-Tue Jul 22 17:20:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_func): new function to get API's address which
-	  is often used and not supported on all Windows.
-
-	* win32/win32.c (overlapped_socket_io): shouldn't use overlapped I/O if
-	  CancelIo() is not supported.
-
-Tue Jul 22 16:47:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h, sprintf.c (rb_str_catf, rb_str_vcatf): new
-	  functions.  [ruby-dev:35597]
-
-	* string.c (rb_str_capacity): new function to return the capacity.
-
-Tue Jul 22 16:08:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (connect_blocking, socks_connect_blocking,
-	  ruby_connect): cast.
-
-Tue Jul 22 11:05:08 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_dir.rb: use realpath of tmpdir. [ruby-dev:35481]
-
-	* test/ruby/test_process.rb: ditto.
-
-Tue Jul 22 09:51:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el: fix here-doc strings with inner quotes.  patches
-	  by Nathan Weizenbaum <nex342 AT gmail.com> from [ruby-core:17615]
-	  through [ruby-core:17910].
-
-Tue Jul 22 04:26:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_buf_new2): optimization for literals.
-
-	* string.c (str_buf_cat): returns VALUE.
-
-Tue Jul 22 03:34:01 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Update to RDoc 2.1.0 r112.
-
-Tue Jul 22 02:51:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_buf_cat2, rb_str_cat2): optimization
-	  for literals.
-
-Tue Jul 22 02:50:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja (1.5 Manipulating Ruby data): fix the
-	  prototype of rb_vsprintf, and added rb_str_cat2.  [ruby-dev:35622]
-
-Mon Jul 21 17:15:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_filesystem_encoding): use locale encoding on Unix.
-	  [ruby-dev:35617]
-
-Mon Jul 21 15:29:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (struct __sbuf, FILE): use size_t.
-
-	* sprintf.c (ruby__sfvwrite): ditto.
-
-Mon Jul 21 13:55:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja (1.5 Manipulating Ruby data): mentioned
-	  rb_sprintf and rb_vsprintf.  [ruby-dev:35611]
-
-Mon Jul 21 10:25:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (prepare_getline_args): check if rs is a string when non-nil
-	  lim is given.  [ruby-dev:35610]
-
-Mon Jul 21 04:55:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c (dir_initialize): use rb_convert_type instead of
-	  rb_check_convert_type to prevent SEGV by Dir.new(".", true).
-	  (dir_initialize): use FilePathValue before rb_enc_get(dirname) to
-	  prevent SEGV by Dir.new(0).
-
-Mon Jul 21 04:42:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_union): useless rb_enc_get call removed to prevent
-	  SEGV by Regexp.union("", nil).
-
-Sun Jul 20 22:50:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): NODE_POSTEXE should set each end
-	  procs only once.  [ruby-dev:35596]
-
-Sun Jul 20 16:00:37 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): use rb_protect
-	  instead of rb_rescue2. [ruby-dev:35595]
-
-Sun Jul 20 01:23:24 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): little refactoring.
-
-	* ext/win32ole/win32ole.c (EVENTSINK_GetIDsOfNames): return
-	  ITypeInfo::GetIDsOfNames().
-
-Sat Jul 19 09:31:35 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): little refactoring.
-
-	* ext/win32ole/win32ole.c: add document of inspect methods.
-
-Sat Jul 19 06:08:43 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Import RDoc r104.  Various make test-all fixes.
-
-Sat Jul 19 00:27:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): fixed wrong check
-	  about 64bit positive value.
-
-Fri Jul 18 23:23:37 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): avoid cfp consistency
-	  error when exception raised in event callback.
-
-Fri Jul 18 14:52:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (socklist): table for registering socket options
-	  (currently only O_NONBLOCK).
-
-	* win32/win32.c (StartSockets, exit_handler): alloc/free socklist.
-
-	* win32/win32.c (is_socket): use socklist.
-
-	* win32/win32.c (rb_w32_accept, rb_w32_socket, rb_w32_socketpair):
-	  register new socket to socklist.
-
-	* win32/win32.c (rb_w32_close): remove closing socket from socklist.
-
-	* win32/win32.c (fcntl): register socket options.
-
-	* win32/win32.c (overlapped_socket_io): send to/recv from socket with
-	  overlapped operation if the socket is not nonblocking mode.
-	  [experimental]
-
-	* win32/win32.c (rb_w32_send, rb_w32_sendto, rb_w32_recv,
-	  rb_w32_recvfrom): use overlapped_socket_io().
-
-	* win32/win32.c (open_ifs_socket): set overlapped mode. this is the
-	  default mode of winsock's socket(), so lacking it is an old bug.
-
-Fri Jul 18 09:44:30 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/*: Import RDoc r101.
-
-Thu Jul 17 23:45:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_c_parser.rb (teardown): close tempfile.
-
-Thu Jul 17 21:08:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb (test_getpriority, test_setpriority): use
-	  PRIO_PROCESS instead of PRIO_USER.
-
-Thu Jul 17 20:41:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_unpack): fix v and V with big endian.
-	  [1].pack("V").unpack("V") was [4294967296].
-
-Thu Jul 17 20:35:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_pack): fix i! with big endian.  [1].pack("i!") was
-	  "\0\0\0\0".
-
-Thu Jul 17 16:48:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): select() for connect() has
-	  mean only when the socket is non-blocking.
-
-Thu Jul 17 10:55:24 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* mkconfig.rb: Simplify expression for RDoc.
-
-Thu Jul 17 10:21:15 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): strict check.
-	  fixed [ruby-dev:33683]
-
-Thu Jul 17 04:19:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): wake up joining threads.
-
-	* thread.c (sleep_forever, sleep_timeval): return when interrupted.
-	  [ruby-dev:35542]
-
-	* thread.c (timer_thread_function): restore main thread status.
-	  [ruby-core:17270]
-
-Thu Jul 17 01:27:38 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (appendline): remove invalid access.
-
-Wed Jul 16 18:04:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (signal_exec, trap_handler): trap accepts a string as
-	  command.  [ruby-dev:35533]
-
-Wed Jul 16 00:04:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/envutil.rb (Test::Unit::Assertions#assert_in_out_err): new
-	  method.
-
-	* test/ruby/test_argf.rb: use assert_in_out_err instead of
-	  EnvUtil.rubyexec.
-
-	* test/ruby/test_module.rb: ditto.
-
-	* test/ruby/test_require.rb: ditto.
-
-	* test/ruby/test_objectspace.rb: ditto.
-
-	* test/ruby/test_object.rb: ditto.
-
-	* test/ruby/test_string.rb: ditto.
-
-	* test/ruby/test_method.rb: ditto.
-
-	* test/ruby/test_variable.rb: ditto.
-
-	* test/ruby/test_io.rb: ditto.
-
-	* test/ruby/test_rubyoptions.rb: ditto.
-
-	* test/ruby/test_exception.rb: ditto.
-
-	* test/ruby/test_class.rb: ditto.
-
-	* test/ruby/test_thread.rb: ditto.
-
-Tue Jul 15 22:34:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (ruby_version): follow changes in configure.in.
-
-Tue Jul 15 21:58:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/{,tkutil/}extconf.rb: ruby/ruby.h no longer needs to be
-	  checked.
-
-	* ext/tk/{tcltklib.c,tkutil/tkutil.c}: check macros for each headers.
-
-Tue Jul 15 21:45:41 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/tk/extconf.rb, ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: Do
-	  not test ruby/ruby.h, which makes OS X's gcc pick the wrong
-	  header file from Ruby.framework.
-
-Tue Jul 15 21:31:26 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in (--with-ruby-version): Add a new option to specify
-	  the ruby version string for version specific directories.
-	  [ruby-dev:35490]
-
-	* mkconfig.rb: Definition of ruby_version is now determined by the
-	  configure script.
-
-Tue Jul 15 18:14:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect, s_accept): check before readable/
-	  writable by select() instead of wrapping in blocking region.
-
-	* ext/socket/socket.c (bsock_send, s_recvfrom, udp_send, unix_send_io,
-	  unix_recv_io): should check readable/writable before calling blocking
-	  functions.
-	  see [ruby-dev:35446]
-
-Tue Jul 15 18:12:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (ubf_handle): cancel blocking IO if it can (only
-	  Vista). see [ruby-dev:35446]
-
-	* win32/win32.c (errmap): add ERROR_OPERATION_ABORTED as EINTR.
-
-Mon Jul 14 20:35:21 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_event.rb (teardown): fix typo.
-
-Mon Jul 14 18:47:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_loop): constified.
-
-	* transcode.c (str_transcode): rb_str_set_len() sets a delimiter.
-
-	* transcode_data.h (rb_transcoder): constified preprocessor and
-	  postprocessor input.
-
-	* enc/trans/japanese.c: ditto.
-
-Sun Jul 13 05:37:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI_PTRDIFF_PREFIX, PRI_SIZE_PREFIX): typo.
-
-	* {bcc32,win32}/Makefile.sub: (SIZEOF_SIZE_T, SIZEOF_PTRDIFF_T): added.
-
-Sat Jul 12 23:54:55 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (LIBRUBY_DLDFLAGS): import library which created
-	  with DLL is broken. save import library which created by lib.exe and
-	  install it.
-	  fixed the problem mentioned at the postscript of [ruby-dev:35448]
-
-Sat Jul 12 23:24:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: use PRIuSIZE.
-
-Sat Jul 12 22:41:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI_PTRDIFF_PREFIX, PRI_SIZE_PREFIX): fixed typo.
-
-Sat Jul 12 22:30:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (HAVE_RUBY_RUBY_H): defines macros so that
-	  extconf.rb do not need to check if headers exist under separated
-	  directory.  [ruby-dev:35437]
-
-	* include/{ruby,rubyio,rubysig}.h, include/ruby/intern.h: use
-	  "ruby/..." instead of <ruby/...>.
-
-Sat Jul 12 22:17:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (sizeof ptrdiff_t): check for size of ptrdiff_t.
-
-	* include/ruby/ruby.h (PRI?PTRDIFF, PRI?SIZE): printf conversion
-	  specifiers for ptrdiff_t and size_t/ssize_t.
-
-	* insns.def (leave), marshal.c (long_toobig), transcode.c
-	  (str_transcode), vm_dump.c (control_frame_dump, stack_dump_each),
-	  (debug_print_register, debug_print_pre): t and z length modifiers
-	  are C99.
-
-Sat Jul 12 16:02:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client#do_rpc): requires
-	  webrick/cookie.  [ ruby-Bugs-21139 ]
-
-Sat Jul 12 09:25:07 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_event.rb: add test
-	  for WIN32OLE_EVENT#on_event_with_outargs
-
-	* test/win32ole/test_win32ole_event.rb(teardown): calling
-	  WIN32OLE_EVENT.message_loop
-
-Sat Jul 12 01:54:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_select): shouldn't pass non-socket handle to
-	  original select().
-
-Fri Jul 11 23:05:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/zlib/test_zlib.rb: add a test for Zlib::Deflate#params.
-
-Fri Jul 11 22:58:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/zlib/zlib.c (rb_deflate_params): flush before deflateParams.
-	  [ruby-core:17675]
-
-Fri Jul 11 22:09:01 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.rb, win32/Makefile.sub (PLATFORM): use $(PLATFORM)
-	  instead of $(OS) because ENV["OS"] is used in test-all (drb).
-
-Fri Jul 11 20:51:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_wait_readable, rb_io_wait_writable): check if the file
-	  descriptor is closed.
-
-	* thread.c (rb_thread_wait_fd_rw): ditto.
-
-Fri Jul 11 16:16:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_accept, rb_w32_socket, rb_w32_socketpair):
-	  prohibit inheritance of sockets, too. [experimental]
-
-Fri Jul 11 14:39:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): the measures for Vista is no longer
-	  unnecessary.
-
-Fri Jul 11 06:16:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (process.o): depends on util.h.
-
-Fri Jul 11 05:07:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (pipe): prohibit inheritance.
-	  fixed: [ruby-dev:35421]
-
-Fri Jul 11 00:56:46 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (thread_create_core): fix GC problem.
-	  [ruby-core:17669]
-
-Thu Jul 10 22:06:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pstore.rb (PStore#transaction): return the result from the
-	  block.  [ruby-core:17718]
-
-Thu Jul 10 21:15:49 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_typelib.rb: add some illegal argument
-	  test.
-
-	* test/win32ole/test_win32ole_type.rb: ditto.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-	* test/win32ole/test_win32ole_param.rb: ditto.
-
-	* test/win32ole/test_win32ole_method.rb: ditto.
-
-Thu Jul 10 19:38:35 2008  wanabe  <s.wanabe@gmail.com>
-
-	* test/ruby/envutil.rb (assert_normal_exit): r17993 revert.
-
-Thu Jul 10 18:29:41 2008  wanabe  <s.wanabe@gmail.com>
-
-	* test/ruby/envutil.rb (assert_normal_exit): finish writing script
-	  before spawn("ruby") to avoid blocking in win32.
-
-Thu Jul 10 17:20:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (insert): follow recent changes of globbing.
-
-Thu Jul 10 14:09:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/coverage/coverage.c (rb_coverage_start): return nil.
-
-Thu Jul 10 12:41:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_wait_for): fixed variable name.
-
-Thu Jul 10 12:09:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_thread_t), vm.c (rb_thread_mark), process.c
-	  (rb_last_status_get, rb_last_status_set, rb_last_status_clear):
-	  moved last_status from rb_vm_t.  [ruby-dev:35414]
-
-	* vm.c (th_init2): initialize last_status with nil.
-
-Thu Jul 10 12:09:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_wait_for): wait until timed out only when
-	  sleeping with timeout.
-
-Wed Jul  9 22:41:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (sleep_timeval): wait until timed out.  [ruby-core:17270]
-
-Wed Jul  9 20:58:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (rb_ary_fill): don't raise even if length is negative.
-	  [ruby-core:17483], [ruby-core:17661]
-
-Wed Jul  9 20:18:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_va_args_macro): check for __VA_ARGS__.
-
-	* thread.c (thread_debug): show source name and line if possible.
-
-	* thread_{pthread,win32}.c (rb_thread_create_timer_thread): needs more
-	  stack for debug.
-
-Wed Jul  9 11:13:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/profiler.rb (Profiler__#print_profile): sort in the descending
-	  order of cumulative time.
-
-Wed Jul  9 11:11:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (struct glob_args, rb_glob_caller, rb_glob2, push_pattern),
-	  (glob_brace): make consistent prototypes.
-
-	* dir.c (push_glob): set enc in the caller of rb_glob_caller as well
-	  as rb_glob2.
-
-Wed Jul  9 09:12:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (options): use input_endian.
-
-Wed Jul  9 01:38:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): alphabets or numerics mutually enclosing
-	  non-alphanumeric characters can carry up.  e.g., "1.999".succ should
-	  be "2.000".
-
-Wed Jul  9 00:12:31 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_set_coverages, rb_reset_coverages): enable and disable
-	  coverage measurement.
-
-	* thread.c (rb_get_coverages): rename and move from vm.c.
-
-	* vm.c (rb_vm_get_coverages): ditto.
-
-	* iseq.c (prepare_iseq_build): ditto.
-
-	* thread.c (clear_coverage): ditto.
-
-	* parse.y (coverage): ditto.
-
-	* ext/coverage/coverage.c: use above functions, add new method
-	  Coverage.start and fix rdoc .
-
-Tue Jul  8 23:02:35 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (find_default_source): bug fix when
-	  OLE object does not have default source interface.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Tue Jul  8 22:56:23 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_enable_coverages): hide coverage array by setting 0 to
-	  klass during measurement.
-
-	* parse.y (coverage, yycompile0): ditto.
-
-	* iseq.c (prepare_iseq_build): use rb_hash_lookup instead of
-	  rb_hash_aref.
-
-	* thread.c (rb_coverage_result): restore klass of coverage array
-	  and return it.
-
-	* thread.c (update_coverage): check whether its klass is 0.
-
-Tue Jul  8 22:28:25 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/debug.rb, lib/profile.rb: fix to use RubyVM.
-
-	* lib/rdoc/parsers/parse_c.rb: ditto.
-
-Tue Jul  8 21:45:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (rb_vm_mark): mark the last element of special_exceptions.
-
-Tue Jul  8 19:55:40 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (find_default_source): try to
-	  find COCLASS when WIN32OLE object is not COCLASS.
-
-	* test/win32ole/test_win32ole_event.rb: ditto
-
-Tue Jul  8 13:38:22 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.h: fix to skip inserting a trace insn.
-
-Tue Jul  8 11:41:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* dir.c: shouldn't use ruby object in globbing, because glob service
-	  routines are called before initializing ruby on some platforms (ex.
-	  windows).
-
-Tue Jul  8 10:08:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (Next): use rb_enc_mbclen. [ruby-dev:35390]
-
-Tue Jul  8 07:59:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (Next): use rb_enc_precise_mbclen.
-
-Tue Jul  8 02:27:23 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c: preserve encoding of strings in glob and fnmatch.
-
-	* include/ruby/ruby.h: related changes.
-
-Tue Jul  8 00:22:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): limit carrying in an alphanumeric region if
-	  exists.  [ruby-dev:35094]
-
-Mon Jul  7 20:39:28 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(Init_win32ole): add
-	  WIN32OLE_TYPE#source_ole_types, WIN32OLE_TYPE#default_ole_types,
-	  WIN32OLE_TYPE#default_event_sources.
-
-	* test/win32ole/test_win32ole_type.rb: ditto.
-
-Mon Jul  7 19:45:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_dir.rb (test_chroot_nodir): add Errno::EPERM.
-
-Mon Jul  7 17:12:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ipaddr.rb (IPAddr#initialize): get rid of ArgumentError in
-	  IPAddr#to_range.  a patch from okkez <okkez000 AT gmail.com> in
-	  [ruby-dev:35091].
-
-Mon Jul  7 01:24:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): fix for file name with spaces.
-	  [ruby-talk:307404]
-
-Mon Jul  7 00:59:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (ruby_init_stack): prior STACK_END_ADDRESS if
-	  found.  [ruby-core:17624]
-
-Sun Jul  6 23:48:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (bsock_send, s_recvfrom, ruby_connect, s_accept),
-	  (udp_send, unix_send_io, unix_recv_io): blocking region support.
-
-Sun Jul  6 18:34:35 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_type.rb (test_initialize): add
-	  more assertions.
-
-Sun Jul  6 10:12:21 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/test/unit/collector/objectspace.rb
-	  (Test::Unit::Collector::ObjectSpace::NAME): fix a typo.
-
-Sun Jul  6 00:56:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (host_str): fix type mismatch in rb_raise
-	  format and argument.
-	  (port_str): ditto.
-	  (unix_recv_io): ditto.
-	  (sock_s_unpack_sockaddr_un): ditto.
-
-Sat Jul  5 23:42:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (NUM2INT): cast to int.
-	  (FIX2INT): ditto.
-	  (NUM2UINT): cast to unsigned int.
-	  (FIX2UINT): ditto.
-
-Sat Jul  5 23:10:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_pipe): new function for handling EMFILE and ENFILE
-	  error of pipe().
-	  (UPDATE_MAXFD_PIPE): removed.
-	  (pipe_open): use rb_pipe.
-	  (rb_io_s_pipe): ditto.
-
-	* process.c (pipe_nocrash): use rb_pipe.
-
-	* include/ruby/intern.h (rb_pipe): declared.
-
-Sat Jul  5 22:22:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_initialize): NUM2INT() returns int.
-
-	* thread.c (timer_thread_function), thread_pthread.c (thread_timer),
-	  thread_win32.c (timer_thread_func), thread_{pthread,win32}.c
-	  (rb_thread_create_timer_thread): passing VM.
-
-Sat Jul  5 20:53:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_word.rb: check word installed.
-
-Sat Jul  5 16:12:54 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: revert. before lazy sweep.
-
-Sat Jul  5 09:55:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE#ole_respond_to?
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sat Jul  5 08:48:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (unescape_nonascii): add has_property argument not to
-	  raise error by /\p{Hiragana}\u{3042}/ in EUC-JP script.
-	  (rb_reg_preprocess): use has_property argument to make regexp
-	  encoding fixed.
-
-Sat Jul  5 08:29:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (unescape_nonascii): make regexp fixed_encoding if \p is used.
-	  fixed [ruby-core:17279].
-
-Fri Jul  4 23:12:53 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (d2time): fix the bug of VT_DATE
-	  to String conversion when negative value.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-Fri Jul  4 22:15:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/testcase.rb: collect descendants of
-	  Test::Unit::TestCase using inherited.
-
-	* lib/test/unit/autorunner.rb: don't use ObjectSpace.each_object.
-
-	* lib/test/unit/collector/dir.rb: ditto.
-
-	* lib/test/unit/collector/objectspace.rb: ditto.
-
-	[ruby-core:17126]
-
-Fri Jul  4 20:43:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigEncoding): removed auxiliary_data.
-
-	* include/ruby/encoding.h (ENC_DUMMY_P): moved dummy encoding flag to
-	  rb_encoding from Encoding instance.
-
-	* encoding.c (rb_encoding_list): list of Encoding instances.
-
-	* encoding.c (struct rb_encoding_entry): moved base encoding from
-	  instance variable.
-
-Fri Jul  4 17:51:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): proper check.
-
-Fri Jul  4 14:17:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/ftp.rb (Net::FTP#sendport): use divmod.  [ruby-core:17557]
-
-Fri Jul  4 11:08:37 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (garbage_collect_force): sweep is completely ended.
-
-	* gc.c (os_obj_of): invoke garbage_collect_force() when freelist none.
-
-Fri Jul  4 05:01:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (rb_num2uint, rb_fix2uint): typo.
-
-Fri Jul  4 02:21:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): also needs checking
-	  negative value. see [ruby-dev:33683]
-
-Thu Jul  3 23:26:36 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/intern.h: remove prototypes about coverage.
-
-	* iseq.c (prepare_iseq_build): add prototype.
-
-	* parse.y (coverage): ditto.
-
-	* thread.c (clear_coverage): ditto.
-
-	* thread.c (update_coverage): use rb_sourceline.
-
-	* thread.c (rb_get_coverages): rename and move to vm.c.
-
-	* vm.c (rb_vm_get_coverages): ditto.
-
-	* ext/coverage/coverage.c: add rdoc.
-
-Thu Jul  3 21:51:21 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/coverage/coverage.c, ext/coverage/extconf.rb: eliminate
-	  COVERAGE__ and introduce coverage.so instead.  How to measure
-	  coverage: (1) require "coverage.so", (2) require or load Ruby source
-	  file, and (3) Coverage.result will return the same hash as COVERAGE__.
-	  [ruby-dev:35324]
-
-	* thread.c (rb_enable_coverages): start coverage measurement by using
-	  rb_add_event_hook.
-
-	* thread.c (rb_get_coverages): returns current results of coverage
-	  measurement.
-
-	* include/ruby/intern.h: add prototype for above two functions.
-
-	* vm_core.h, vm.c: add field of coverages to rb_vm_t.
-
-	* insns.def (trace): remove special handling for COVERAGE__.
-
-	* iseq.c (prepare_iseq_build): switch COVERAGE__ to
-	  rb_get_coverages().
-
-	* parse.y (coverage): ditto.
-
-	* thread.c (clear_coverage): ditto.
-
-	* lib/coverage.rb: use coverage.so instead of COVERAGE__.
-
-Thu Jul  3 21:20:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_initialize): NUM2INT returns long.
-
-Thu Jul  3 21:06:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (Init_eval): typo fixed in r17833.
-
-Thu Jul  3 19:44:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): remove duplicate line.
-
-Thu Jul  3 16:08:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (erfc): erfc of glibc comes with Debian GNU/Linux Etch
-	  on IA64 is broken.  erfc(10000.0) aborts.
-	  use missing/erf.c instead.
-	  http://sources.redhat.com/ml/libc-hacker/2005-08/msg00008.html
-
-Thu Jul  3 12:49:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP::start): use 'localhost' instead of
-	  'localhost.localdomain'.  [ruby-dev:35333]
-
-	* lib/net/smtp.rb (Net::SMTP::SMTP.start): ditto.
-
-Thu Jul  3 07:06:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (SET_LC_MESSAGES): LC_MESSAGES must be C.
-
-Thu Jul  3 07:02:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (Init_eval), gc.c (Init_GC), proc.c (Init_Proc): freeze
-	  messages of preallocated special exceptions also.
-
-Thu Jul  3 04:39:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_during_gc): VALUE cache is irrelevant.
-
-Thu Jul  3 01:44:01 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regint.h (GET_ALIGNMENT_PAD_SIZE, ALIGNMENT_RIGHT): cast pointer to
-	  uintptr_t instead of unsigned int.
-
-Thu Jul  3 01:23:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sprintf.c: include ieeefp.h to refer isinf.
-
-	* ext/bigdecimal/bigdecimal.c: ditto.
-
-	* ext/json/ext/generator/generator.c: ditto.
-
-	* rational.c: ditto.
-
-Thu Jul  3 01:01:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* missing/tgamma.c (tgamma): remove unused variable.
-
-Thu Jul  3 00:18:00 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: avoid creating Ruby object during
-	  GC. thanks to arton <artonx AT yahoo.co.jp>. [ruby-dev:35313]
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Thu Jul  3 00:09:31 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* gc.c: add rb_during_gc(). based on a patch from arton <artonx AT
-	  yahoo.co.jp> at [ruby-dev:35313].
-
-	* include/ruby/intern.h: ditto.
-
-Wed Jul  2 09:49:10 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_lazy_sweep): use lazy sweep algorithm for response
-	  performance gain.
-
-	* gc.c (garbage_collect_force): mark and lazysweep invoke, after
-	  erasing all mark.
-
-	* gc.c (GC_NOT_LAZY_SWEEP): not lazy sweep flag. for debug.
-
-Wed Jul  2 03:42:44 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb: fix expected traces for
-	  RubyVM::FrozenCore's event and r17744.
-
-Wed Jul  2 03:10:41 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.h, insns.def: reduce insn operand of "trace".
-
-	* include/ruby/ruby.h: add RUBY_EVENT_COVERAGE event.
-
-Wed Jul  2 02:02:34 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c, vm.c: fix to refer next ruby level cfp to make binding.
-
-Wed Jul  2 01:58:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insns.def (trace): C99ism.
-
-Wed Jul  2 01:53:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* Add coverage measurement constant COVERAGE__.  This constant is not
-	  for casual use.  Usage: (1) assign {} to COVERAGE__, (2) require or
-	  load Ruby source file, and (3) COVERAGE__["sourcefilepath"] will
-	  return an array whose elements represent number of executions per
-	  line of source code.
-
-	* vm_core.h: add field of coverage array to iseq.
-
-	* iseq.c (prepare_iseq_build): ditto.
-
-	* insns.def (trace): update coverage array.
-
-	* parse.y (coverage): create and initialize coverage array.
-
-	* compile.h (ADD_TRACE): add trace instruction to update coverage
-	  array.
-
-	* thread.c (clear_coverage): delete coverage array when forking.
-	  Otherwise, double count of coverage may occur.
-
-	* lib/coverage.rb: sample coverage measurement tool.
-
-	* error.c: distinguish explicitly between parse_in_eval and
-	  mild_compile_error.
-
-	* load.c: ditto.
-
-	* vm_eval.c: ditto.
-
-Tue Jul  1 21:32:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/test/unit/ui/console/testrunner.rb: prevent destructive
-	  modification to $0.
-
-	* test/rubygems/gemutilities.rb (build_rake_in): move from
-	  test_gem_ext_rake_builder.rb.
-
-	* test/rubygems/test_gem_ext_rake_builder.rb: ditto.
-
-	* test/rubygems/test_gem_installer.rb: override Gem.ruby and
-	  ENV["rake"].
-
-	* test/rubygems/test_gem_uninstaller.rb: ditto.
-
-
-Tue Jul  1 21:13:17 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, vm.c, insns.def: call FrozenCore.set_postexe method
-	  instead to use "postexe" insn.
-
-	* id.c, id.h: add a prepared id for above.
-
-Tue Jul  1 21:09:58 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): we need to include COMMON_HEADERS,
-	  namely inclusion of ruby.h, because _GNU_SOURCE is now defined
-	  there (if any) and socket.so requires it on Linux systems.
-
-Tue Jul  1 20:55:07 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* eval.c (rb_interrupt): trick to suppress GCC warning.
-
-	* sprintf.c (rb_str_format): ditto.
-
-Tue Jul  1 20:44:36 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/instruction.rb: RubyVM is not module.
-
-Tue Jul  1 19:31:24 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* ext/digest/digest.c (rb_digest_instance_inspect): constified.
-
-	* variable.c (rb_path2class): field precision should have type int.
-
-Tue Jul  1 19:01:00 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/shift_jis.c (code_is_ctype): HALF WIDTH KATAKANA is
-	  a character.
-
-Tue Jul  1 17:56:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD__uqtoa): constified.
-
-Tue Jul  1 17:50:44 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/make_encdb.h: always add ';' at the end of line.
-
-Tue Jul  1 17:44:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (COMPILE_OPTION_FALSE), time.c (timegm_noleapsecond),
-	  thread.c (eKillSignal, eTerminateSignal),
-	  missing/vsnprintf.c (BSD_vfprintf): constified.
-
-Tue Jul  1 17:37:43 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* enc/ascii.c: ISO C does not allow extra ';' outside of a
-	  function
-
-	* enc/us_ascii.c: ditto.
-
-	* enc/utf_8.c: ditto.
-
-	* enc/big5.c: ditto.
-
-	* enc/euc_jp.c: ditto.
-
-	* enc/euc_kr.c: ditto.
-
-	* enc/euc_tw.c: ditto.
-
-	* enc/gb2312.c: ditto.
-
-	* enc/gbk.c: ditto.
-
-	* enc/iso_8859_1.c: ditto.
-
-	* enc/iso_8859_2.c: ditto.
-
-	* enc/iso_8859_3.c: ditto.
-
-	* enc/iso_8859_4.c: ditto.
-
-	* enc/iso_8859_5.c: ditto.
-
-	* enc/iso_8859_6.c: ditto.
-
-	* enc/iso_8859_7.c: ditto.
-
-	* enc/iso_8859_8.c: ditto.
-
-	* enc/iso_8859_9.c: ditto.
-
-	* enc/iso_8859_10.c: ditto.
-
-	* enc/iso_8859_11.c: ditto.
-
-	* enc/iso_8859_13.c: ditto.
-
-	* enc/iso_8859_14.c: ditto.
-
-	* enc/iso_8859_15.c: ditto.
-
-	* enc/iso_8859_16.c: ditto.
-
-	* enc/koi8_r.c: ditto.
-
-	* enc/shift_jis.c: ditto.
-
-	* enc/utf_16be.c: ditto.
-
-	* enc/utf_32be.c: ditto.
-
-	* enc/utf_32le.c: ditto.
-
-	* enc/windows_1251.c: ditto.
-
-	* process.c (run_exec_rlimit): ISO C90 forbids mixed declarations
-	  and code
-
-	* include/ruby/ruby.h (enum ruby_special_consts): ISO C forbids
-	  comma at end of enumerator list
-
-	* include/ruby/ruby.h (enum ruby_value_type): ditto.
-
-	* eval_intern.h (enum): ditto.
-
-	* vm_core.h (enum rb_thread_status): ditto.
-
-	* parse.y (enum lex_state_e): ditto.
-
-	* parse.y (enum string_type): ditto.
-
-	* process.c (enum): ditto.
-
-	* ruby.c (enum dump_flag_bits): ditto.
-
-	* ruby.c (enum disable_flag_bits): ditto.
-
-	* enc/gb18030.c (enum): ditto.
-
-Tue Jul  1 17:21:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regexec.c (stack_double): use MatchStackLimitSize atomically.
-
-	* regparse.c (onig_free_shared_cclass_table): OnigTypeCClassTable
-	  needs atomicity
-
-	* regsyntax.c: constified all predefined OnigSyntaxTypes.
-
-Tue Jul  1 16:57:44 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* include/ruby/st.h (struct st_table): type of bit-field
-	  'num_entries' is a GCC extension
-
-	* include/ruby/ruby.h (rb_intern): prefix __extension__ for
-	  braced-groups within expressions.
-
-	* include/ruby/intern.h (rb_usascii_str_new2): ditto.
-
-	* include/ruby/intern.h (rb_tainted_str_new2): ditto.
-
-	* include/ruby/intern.h (rb_str_new2): ditto.
-
-Tue Jul  1 15:01:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/ext/builder.rb (Gem::Ext::Builder.make),
-	  (Gem::Ext::Builder.run): EXIT_SUCCESS may be 0 or may not.
-
-	* test/rubygems/test_gem_ext_rake_builder.rb (build_rake_in): override
-	  Gem.ruby and ENV["rake"].
-
-	* runruby.rb: bin/rake does not exist in archdir where architecture
-	  depend script (i.e. rbconfig.rb) exists.
-
-Tue Jul  1 13:19:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_fill): check if beg is too big.
-
-Tue Jul  1 12:01:16 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insns.def, vm.c, vm_core.h: remove some insns
-	  (undef, alias, definemethod).
-	  Call RubyVM::FrozenCore's singleton method instead.
-	  Add "putiseq" and "putspecialobject" instructions.
-
-	* id.c, id.h: add ids for above.
-
-	* tool/parse.rb: "VM" no longer exists.  Use RubyVM instead.
-
-Tue Jul  1 03:28:16 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rubygems/test_ext_configure_builder.rb:  Apply locale-free
-	  patch by Yusuke ENDOH.  [ruby-core:17444].
-
-	* runruby.rb: Set ENV['rake'].  Patch by Yusuke ENDOH
-	  [ruby-core:17442].
-
-Tue Jul  1 01:07:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension.read_multipart): blanks inside
-	  double quotes are allowed.  [ruby-list:45140]
-
-Tue Jul  1 00:59:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c (num_coerce): call rb_Float(x) first.  don't depend on
-	  evaluation order of function arguments.
-
-Tue Jul  1 00:49:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_newobj): abort GC phase before rb_bug.
-
-Mon Jun 30 23:15:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/openssl/test_ssl.rb (start_server): shutdown TCPServer before
-	  close.
-
-Mon Jun 30 23:01:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RUBY_H_INCLUDES): common headers which are included with
-	  ruby.h together.
-
-Mon Jun 30 22:57:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb (test_raise): reveal an exception
-	  hided by rescue modifier.
-
-Mon Jun 30 22:49:32 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb (test_aset): access with too big index
-	  raises not ArgumentError but IndexError now.
-
-Mon Jun 30 22:30:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (recursive_collect): r15662 reverted.
-
-Mon Jun 30 22:27:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/stringio/stringio.c (strio_getline): fix for nil and "" as
-	  separator.  [ruby-dev:34591]
-
-Mon Jun 30 22:21:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (argf_each_line): pass args to each_line. [ruby-dev:34958]
-
-Mon Jun 30 22:12:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (chain_finalized_object): should not delete from finalizer
-	  table until run.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): deferred_final_list may be
-	  empty first.
-
-Mon Jun 30 18:57:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_finalize_deferred): allow object allocation in finalizers.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): ditto.
-
-Mon Jun 30 14:41:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (rb_newobj): prohibit call of rb_newobj() during gc when
-	  USE_VALUE_CACHE is not defined (normal case).
-
-Mon Jun 30 10:28:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syslog/syslog.c (syslog_write): syslog operations should be
-	  protected from $SAFE level 4.  a patch from Keita Yamaguchi
-	  <keita.yamaguchi at gmail.com>.
-
-	* ext/syslog/syslog.c (mSyslog_close): ditto.
-
-	* ext/syslog/syslog.c (mSyslog_set_mask): ditto.
-
-Mon Jun 30 03:01:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/net/http/test_http.rb (_test_request__file): specify encoding
-	  explicitly.
-
-	* test/net/http/utils.rb: ditto.
-
-Mon Jun 30 02:31:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_utf8_encindex): defined.
-
-	* include/ruby/encoding.h (rb_utf8_encindex): ditto.
-
-Mon Jun 30 02:14:34 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_core.h,vm_core.h, vm_dump.c, iseq.c: rename class name
-	  VM -> RubyVM, and rename rb_cVM -> rb_cRubyVM.
-	  "VM" is too short name for class.
-
-	* test/ruby/test_method.rb, test/ruby/test_settracefunc.rb: ditto.
-
-	* include/ruby/ruby.h: rb_cRubyVM, rb_cEnv, rb_cISeq should not be
-	  exposed.
-
-Mon Jun 30 02:10:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* process.c (Init_process): fix to avoid a warning.
-
-Mon Jun 30 01:52:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_parse.rb: remove tests for open_args.
-
-Sun Jun 29 23:01:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_format_m): make tmp volatile to avoid possible GC
-	  problem.
-
-Sun Jun 29 18:01:30 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb, lib/rss/utils.rb: merge documents from ruby_1_8.
-
-Sun Jun 29 17:44:23 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb (RSS::ListenerMixin#known_class): define to
-	  work with ruby 1.8.x too.
-
-Sun Jun 29 17:41:42 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb (RSS::Maker::RSSBase#to_feed): raise
-	  exception not return nil if RSS::Maker.make can't get required
-	  information.
-
-	* test/rss/rss-assertions.rb: follow the above change.
-
-Sun Jun 29 17:37:23 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb (RSS::Maker::RSSBase#make): require block.
-
-	* test/rss/test_maker_{0.9,1.0,2.0}.rb: follow the above change.
-
-Sun Jun 29 17:33:34 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb, lib/rss/maker/itunes.rb: don't use
-	  instance_eval to initialize variables. (speed up)
-
-Sun Jun 29 17:31:15 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb (RSS::VERSION):
-	  0.2.4 -> 0.2.5.
-
-Sun Jun 29 11:36:20 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* dir.rb: fix resource leak.
-
-Sun Jun 29 09:43:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tmpdir.rb (@@systmpdir): prior LOCAL_APPDATA if possible, and
-	  should be clean.  based on a patch from arton <artonx AT
-	  yahoo.co.jp> at [ruby-dev:35269]
-
-Sun Jun 29 07:53:08 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (date2time_str): fix the overflow in
-	  some situation. [ruby-bugs-20793]
-
-Sat Jun 28 21:25:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (struct RRegexp): new field usecnt.  replace
-	  str and len by src.
-
-	* gc.c (gc_mark_children): mark src field of regexp.
-	  (obj_free): don't free str field.
-
-	* re.c (REG_BUSY): removed.
-	  (rb_reg_initialize): prohibit re-initialize regexp.
-	  (rb_reg_search): use usecnt to prevent freeing regexp currently
-	  using.  this prevents SEGV by:
-	    r = /\A((a.)*(a.)*)*b/
-	    r =~ "ab" + "\xc2\xa1".force_encoding("euc-jp")
-	    t = Thread.new { r =~ "ab"*8 + "\xc2\xa1".force_encoding("utf-8")}
-	    sleep 0.2
-	    r =~ "ab"*8 + "\xc2\xa1".force_encoding("euc-jp")
-
-Sat Jun 28 21:15:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_new2, rb_tainted_str_new2,
-	  rb_usascii_str_new2): use inline versions only for constant
-	  literals.
-
-Sat Jun 28 13:12:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/rubygems/test_gem.rb (test_self_path_APPLE_GEM_HOME): don't use
-	  fixed /tmp/apple_gem_home directory.
-
-Sat Jun 28 08:40:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: check String encoding when
-	  converting String to VT_BSTR in OLE.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sat Jun 28 01:08:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_timespec): fix rounding negative float.
-
-Fri Jun 27 21:38:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* struct.c: __size__ removed.  use the length of __members__ instead.
-	  (num_members): new function.
-
-Fri Jun 27 21:19:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/inlinetest.rb (InlineTest.in_progname): workaround for frozen
-	  $0.  [ruby-dev:35261]
-
-	* lib/test/unit/ui/console/testrunner.rb (TestRunner#finished): ditto.
-
-Fri Jun 27 17:45:17 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/erb.rb: adjust line number for magic comment.
-
-	* test/erb/test_erb.rb: add tests for def_method.
-
-Fri Jun 27 14:29:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): empty not should call '!' on nil.
-	  cf [ruby-dev:35227]
-
-Fri Jun 27 14:25:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_eval_body): if thrown exception is frozen, reraise it to
-	  create a new instance.
-
-Fri Jun 27 13:29:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_new2, rb_tainted_str_new2,
-	  rb_usascii_str_new2): use with-length versions with strlen to
-	  optimize strlen, if optimized.
-
-Fri Jun 27 12:28:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (mkmf): new command to create makefile.
-
-Fri Jun 27 11:06:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (wait_writable): added help message.
-
-Fri Jun 27 06:52:54 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* configure.in: need a ",".
-
-	* process.c (rb_fork): check CANNOT_FORK_WITH_PTHREAD macro.
-
-Fri Jun 27 06:50:56 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c (vm_call_super): fix to call method_missing.
-	  [ruby-core:15719], [ruby-core:17340]
-
-Fri Jun 27 00:00:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_arg0, ruby_prog_init): freeze $0.  a patch from Keita
-	  Yamaguchi <keita.yamaguchi at gmail.com>.
-
-Thu Jun 26 23:58:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_index_m, rb_str_rindex_m, rb_str_include): fix
-	  rdoc.
-
-Thu Jun 26 17:43:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_f_trace_var): should not be allowed at safe level 4.
-	  a patch from Keita Yamaguchi <keita.yamaguchi at gmail.com>.
-
-Thu Jun 26 11:04:30 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems: Update to RubyGems 1.2.0 r1824.  Incorporates patch by
-	  Yusuke ENDOH [ruby-core:17353].
-
-Thu Jun 26 00:48:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): not operand might be empty.  [ruby-dev:35227]
-
-Wed Jun 25 21:54:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): make functional-style not operator to act
-	  like function.  see <http://d.hatena.ne.jp/ku-ma-me/20080624/p1>.
-
-Wed Jun 25 15:28:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_fill): not depend on unspecified behavior at integer
-	  overflow.  reported by Vincenzo Iozzo <snagg AT openssl.it>.
-
-Wed Jun 25 13:42:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/erb.rb (ERB::Compiler:Buffer#new): push magic comment first.
-
-	* lib/erb.rb (ERB::Compiler#compile): fix for broken input.
-
-Wed Jun 25 12:10:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/erb.rb (ERB::Compiler#compile): magic comment needs LF.
-
-Wed Jun 25 09:31:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/erb.rb (ERB::Compiler#compile): output magic comment.
-
-Tue Jun 24 22:14:36 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (eval_string_with_cref): preserve parse_in_eval even if
-	  exception raised.
-
-Tue Jun 24 22:09:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(ole_invoke): fix memory leak.
-	  [ruby-bugs-20792]
-
-Tue Jun 24 17:20:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_fork_with_pthread): check after check for
-	  pthread library, and define the macro when checked only.
-
-Tue Jun 24 17:04:39 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/io/wait/extconf.rb: check sys/socket.h for cygwin.
-
-Tue Jun 24 16:51:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_reopen): remove cygwin handling because it seems to be for
-	  C's stdio.
-	  fixed [ruby-dev:35183]
-
-Tue Jun 24 11:12:33 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h, win32/win32.c (rb_w32_getppid): now support
-	  getppid() on win32 (but only Win2k or later).
-
-	* process.c (get_ppid): remove win32 special logic.
-
-Tue Jun 24 09:40:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (init_sock): socket is binmode on platforms
-	  which support binmode.
-
-Tue Jun 24 00:21:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_build_from_ary): initialize arg_opts, a patch from
-	  Adam Strzelecki <ono@java.pl> in [ruby-core:17220].
-
-Tue Jun 24 00:10:53 2008  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c (iseq_build_from_ary): fix expression to obtain
-	  iseq->local_size and iseq->local_table_size.  [ruby-dev:35205]
-
-Mon Jun 23 11:31:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Rational::power2): removed incomplete method.
-	  see [ruby-dev:35195].   [ruby-core:17293]
-
-Sun Jun 22 14:16:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/extconf.rb (have_readline_func): readline on Mac OS X
-	  needs headers to detect some functions.
-
-Sun Jun 22 09:51:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_class_superclass): rdoc improvement, a patch from
-	  Gaston Ramos <ramos.gaston AT gmail.com> in [ruby-core:17371].
-
-Sun Jun 22 09:22:32 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* README.EXT: translated README.EXT.ja
-
-Sun Jun 22 00:42:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_osid, rb_w32_osver, CreateChild): XP is
-	  is different from Vista about pipe handle inheritance.
-	  fixed [ruby-core:17367], reported by Lars Christensen <larsch at
-	  belunktum.dk>
-
-Sun Jun 22 00:38:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT.ja: add note about mark and free.
-
-Sun Jun 22 00:01:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_binmode_p, argf_binmode_p, Init_IO): new method
-	  IO#binmode? and ARGF.binmode?  [ruby-dev:35148]
-
-Sat Jun 21 17:33:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): no longer support P_WAIT.
-
-Sat Jun 21 16:46:09 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (native_sleep): must block reentrance when accessing
-	  th->unblock.
-	  fixed [ruby-core:17341], reported by Bill Kelly <billk at cts.com>
-
-Sat Jun 21 16:29:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (call_args2, open_args): removed.
-
-	* parse.y (parser_yylex): unified warnings at space between method
-	  name and argument parenthesis.  [ruby-dev:33943]
-
-Sat Jun 21 16:21:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_round): get rid of overflow.
-
-Sat Jun 21 15:57:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc#collect_first_comment): skip
-	  magic comment.
-
-Sat Jun 21 15:54:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check if fork works with pthread.
-
-Sat Jun 21 15:31:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: ported to ruby.
-
-	* tool/make-snapshot: fixed digests.
-
-Sat Jun 21 04:36:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/jacobian.rb (Jacobian::dfdxi):
-	  typo fixed (raize -> raise).  [ruby-list:45101]
-
-	* enumerator.c (enum_each_cons): typo in RDoc fixed.
-
-Sat Jun 21 00:45:34 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* tool/make-snapshot: do not use sha256sum; use BASERUBY instead
-
-	* common.mk (dist): use tool/make-snapshot instead
-
-Fri Jun 20 16:34:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (Init_process): Process::Status#to_int removed.
-	  (PST2INT): defined.
-	  (pst_to_s): use PST2INT.
-	  (pst_inspect): ditto.
-	  (pst_equal): ditto.
-	  (pst_bitand): ditto.
-	  (pst_rshift): ditto.
-	  (pst_wifstopped): ditto.
-	  (pst_wstopsig): ditto.
-	  (pst_wifsignaled): ditto.
-	  (pst_wtermsig): ditto.
-	  (pst_wifexited): ditto.
-	  (pst_wexitstatus): ditto.
-	  (pst_success_p): ditto.
-	  (pst_wcoredump): ditto.
-	  (rb_f_system): ditto.
-
-Fri Jun 20 15:40:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_store, rb_ary_splice): not depend on unspecified
-	  behavior at integer overflow.
-
-	* string.c (str_buf_cat): ditto.
-
-Fri Jun 20 12:39:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_detach_process): store detached process ID in the
-	  thread local storage.  moved from lib/open3.rb.
-
-Fri Jun 20 11:57:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_sub_bang): should preserve replacement points
-	  since they may be altered in the yielded block.
-
-Fri Jun 20 11:07:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_memhash): randomize hash to avoid algorithmic
-	  complexity attacks.
-	  (rb_str_hash): use rb_memhash.
-
-	* include/ruby/intern.h (rb_reset_random_seed): declared.
-
-	* thread.c (rb_thread_atfork): call rb_reset_random_seed.
-
-	* inits.c (rb_call_inits): call Init_RandomSeed at first.
-
-	* random.c (seed_initialized): defined.
-	  (fill_random_seed): extracted from random_seed.
-	  (make_seed_value): extracted from random_seed.
-	  (rb_f_rand): initialize random seed at first.
-	  (initial_seed): defined.
-	  (Init_RandomSeed): defined.
-	  (Init_RandomSeed2): defined.
-	  (rb_reset_random_seed): defined.
-	  (Init_Random): call Init_RandomSeed2.
-
-Wed Jun 18 21:52:38 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* array.c (ary_new, rb_ary_initialize, rb_ary_store,
-	  rb_ary_splice, rb_ary_times): integer overflows should be
-	  checked. based on patches from Drew Yao <ayao at apple.com>
-	  fixed CVE-2008-2726
-
-	* string.c (rb_enc_cr_str_buf_cat): fixed unsafe use of alloca,
-	  which led memory corruption. based on a patch from Drew Yao
-	  <ayao at apple.com> fixed CVE-2008-2726
-
-Fri Jun 20 03:26:00 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_f_fork): NetBSD 4.0 or later can fork.
-
-Fri Jun 20 03:19:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/testunit/collector/test_dir.rb: r15825 made it unnecessary to
-	  change String to Symbol.
-
-	* test/testunit/collector/test_objectspace.rb: ditto.
-
-Fri Jun 20 03:14:31 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*, test/rubygems/*:  Update to RubyGems 1.1.1 r1784 (pre
-	  1.2).
-
-Fri Jun 20 03:01:59 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c: try to remove false positive of deadlock detection (second
-	  trial).
-
-Fri Jun 20 02:16:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Rational::power2): typo fixed.  [ruby-core:17293]
-
-Fri Jun 20 02:11:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): should preserve last successful match
-	  data.  [ruby-dev:35182]
-
-Fri Jun 20 01:07:28 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* KNOWNBUGS.rb, bootstraptest/pending.rb: move a bug (?) to pending.
-
-Fri Jun 20 00:40:08 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_new): fix to return Proc object if block is already
-	  in heap.  [ruby-core:15711]
-
-	* bootstraptest/test_proc.rb: add a test.
-
-Fri Jun 20 00:18:04 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_win32.c (native_sleep): fix to decrement sleeper count.
-
-Thu Jun 19 23:48:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/net/http/test_http.rb: compare encodings of two strings before
-	  comparing themself, which suppress too big error output.
-
-Thu Jun 19 23:46:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/json/ext/parser/parser.rl, ext/json/ext/parser/parser.c: JSON
-	  text SHALL be encoded in Unicode.
-
-Thu Jun 19 23:17:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c, thread_win32.c, vm_core.h: try to remove false positive of
-	  deadlock detection.
-
-Thu Jun 19 21:38:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): check if compile before showing message.
-
-Thu Jun 19 21:35:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: supported multiple snapshots.
-
-Thu Jun 19 20:37:00 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/net/pop.rb (Net::POP3#set_all_uids): speed
-	  up. a patch from <m-sumi AT techfirm.co.jp> [ruby-list:45047]
-
-Thu Jun 19 17:44:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/etc/etc.c (Init_etc): define constant aliases Etc::Passwd
-	  and Etc::Group.  [ruby-dev:35150]
-
-Thu Jun 19 17:37:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_alloc): specify 'inline' modifier.
-
-	* string.c (str_alloc): remove cSymbol hack that no longer
-	  necessary.
-
-	* string.c (scan_once): avoid retrieving encoding info unless
-	  necessary.
-
-Thu Jun 19 17:19:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_scan): String#scan should preserve last
-	  successful match data.  [ruby-dev:35106]
-
-Thu Jun 19 16:49:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* missing/acosh.c (atanh): should set ERANGE to errno if parameter
-	  is the boundary case. fixed [ruby-dev:35155]
-
-Thu Jun 19 16:06:01 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/tile/treeview.rb: cannot configure tags.
-
-Thu Jun 19 11:48:33 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_enumerator.rb: fix to skip "with_memo" test.
-
-Thu Jun 19 11:40:55 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_throw): fix "return" process from "lambda".
-
-	* bootstraptest/test_proc.rb: add a test.
-
-	* bootstraptest/pending.rb: add a pending bug.
-
-Thu Jun 19 00:33:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb: avoid infinite loop.  [ruby-dev:35158]
-
-Wed Jun 18 23:07:19 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* gc.c (rb_newobj): prohibit call of rb_newobj() during gc.
-	  a patch from Sylvain Joyeux in [ruby-core:12099].
-
-Wed Jun 18 21:08:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (verbose_setter, opt_W_getter): fixed prototypes.
-
-Wed Jun 18 19:20:00 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (opt_W_getter): use ruby_verbose directly instead of parameter
-	  because ruby_verbose is not a real variable, so the address of
-	  parameter is not collect.
-
-Wed Jun 18 18:31:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (errmap): add some pipe errors.
-
-	* win32/win32.c (rb_w32_write): set errno when CRT's errno is EINVAL
-	  for pipe errors.
-
-Wed Jun 18 18:09:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (poll_child_status): set EINVAL to errno when
-	  GetExitCodeProcess() fails with ERROR_INVALID_HANDLE.
-
-Wed Jun 18 15:01:18 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_open_file): fs_encoding and fname_encoding is
-	  rb_encoding *.
-	  fixed [ruby-dev:35151]
-
-Wed Jun 18 14:30:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_open_file): not rb_enc_get_index but rb_enc_get.
-
-Wed Jun 18 13:49:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (pipe): now pipe is textmode. although this
-	  change is experimental, it will be spec if no compatibility problem
-	  is reported.
-
-Wed Jun 18 12:05:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object, marshal_dump, r_object0, marshal_load): search
-	  public methods only.  [ruby-core:17283]
-
-	* object.c (convert_type): ditto.
-
-	* lib/singleton.rb (Singleton#_dump): conversion method should be
-	  public.
-
-Wed Jun 18 10:18:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_passwd, etc_group): fixed rdoc.  a patch from
-	  okkez <okkez000 AT gmail.com> in [ruby-dev:35141].
-
-Wed Jun 18 08:58:16 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/*:  Fix errors for 1.9.
-
-	* gem_prelude.rb:  Only remove methods from gem_prelude.rb when
-	  loading real RubyGems.
-
-Wed Jun 18 07:03:30 2008  Eric Hodel  <drbrain@egment7.net>
-
-	* lib/rubygems/*:  Update to RubyGems r1778 (pre 1.2).
-
-Wed Jun 18 04:27:58 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* KNOWNBUGS.rb, bootstraptest/pending.rb: move pending bug.
-
-Wed Jun 18 04:24:20 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_insnhelper.c: fix escape process with "break" and "return"
-	  syntax in "lambda".  [ ruby-Bugs-19304 ], [ruby-core:17164]
-
-	* KNOWNBUGS.rb, bootstraptest/test_proc.rb: add/move solved test.
-
-Wed Jun 18 01:51:10 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: cannot access class variable from
-	  singleton method.
-
-Wed Jun 18 00:03:33 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* dir.c (Init_Dir): dir_foreach() takes variable argument.
-
-Tue Jun 17 23:04:24 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb:  Fixing Telnet#wairfor() which was broken by
-	  changes to the Kernel::Integer() method.  [ruby-core:17272]
-
-Tue Jun 17 23:02:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (opt_W_getter): made a hooked variable.
-
-Tue Jun 17 22:04:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enc/euc_jp.c (property_name_to_ctype): core dumped when sizeof(int)
-	  differs from sizeof(long).  [ruby-dev:35131]
-
-	* enc/shift_jis.c (property_name_to_ctype): ditto.
-
-	* enc/unicode.c (onigenc_unicode_property_name_to_ctype): ditto.
-
-Tue Jun 17 20:32:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (miniruby$(EXEEXT)): $(PREP) isn't always same as
-	  miniruby, and tests, debug, etc have no meaning when
-	  cross-compiling.
-
-Tue Jun 17 18:39:11 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* common.mk: fixed dependencies on miniruby.
-
-Tue Jun 17 18:11:01 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (pipe): expand pipe buffer size.
-
-Tue Jun 17 17:07:35 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): no need to inherit handles here because
-	  spawn'ed child cannot detect that STDIN is closed.
-
-Tue Jun 17 06:32:55 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_data): add intenc and extenc.
-
-	* dir.c (dir_s_alloc): ditto.
-
-	* dir.c (dir_initialize): now accept internal_encoding and
-	  external_encoding.
-
-	* dir.c (dir_s_open): changed for dir_initialize.
-
-	* dir.c (dir_open_dir): ditto.
-
-	* dir.c (dir_foreach): changed for dir_open_dir.
-
-	* dir.c (dir_entries): changed for dir_open_dir.
-
-	* dir.c (dir_enc_str): defined.
-
-	* dir.c (dir_path): use dir_enc_str.
-
-	* dir.c (dir_read): ditto.
-
-	* dir.c (dir_each): ditto.
-
-Tue Jun 17 06:28:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_set_encoding): defined.
-
-	* io.c (rb_open_file): convert path on Windows and Mac OS X.
-
-	* io.c (open_key_args): use io_set_encoding and now accept
-	  internal_encoding and external_encoding.
-
-Tue Jun 17 06:26:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): defined.
-
-	* include/ruby/encoding.h (rb_filesystem_encoding): added.
-
-Tue Jun 17 06:24:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/syck/rubyext.c: add encoding header.
-
-Tue Jun 17 01:52:50 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: SEGV when exit.
-
-	* ext/tk/lib/tk.rb: add a check for safety to Tk.exit.
-
-	* ext/tk/sample/irbtkw.rbw: freezes when receives SIGINT.
-
-Mon Jun 16 21:58:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_each, strio_readlines): IO#each and
-	  IO#readlines do not affect $_.  [ruby-core:17277]
-
-Mon Jun 16 18:52:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/thwait.rb (ThreadsWait): Exception2MessageMapper no longer has
-	  extend_to method.  [ruby-core:17267]
-
-Mon Jun 16 14:46:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/e2mmap.rb (E2MM.def_e2message): typo.
-
-Mon Jun 16 09:43:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_with_object, Init_Enumerator):
-	  Temporarily back out with_memo, for which we need a better name.
-
-Mon Jun 16 07:14:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_readline, strio_each)
-	  (strio_readlines): set lastline.  [ruby-core:17257]
-
-Mon Jun 16 01:49:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_f_block_given_p): fix to skip class frame.
-	  [ruby-core:14813]
-
-	* KNOWNBUGS.rb, bootstraptest/test_method.rb: move solved test.
-
-Mon Jun 16 01:48:08 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c (vm_stack_dump_raw): disable verbose debug output.
-
-Mon Jun 16 01:33:08 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h, thread.c: rename global_interpreter_lock to
-	  global_vm_lock.
-
-Sun Jun 15 18:40:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/syck/rubyext.c (yaml_org_handler): associate encoding.
-
-	* ext/syck/rubyext.c (syck_genericresolver_node_import): ditto.
-
-Sun Jun 15 18:17:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_t), vm.c (rb_vm_mark): moved preallocated special
-	  exceptions.
-
-	* eval.c (Init_eval), gc.c (Init_GC), proc.c (Init_Proc): freeze
-	  preallocated special exceptions.
-
-	* eval.c (rb_longjmp): duplicate the thrown exception to set backtrace
-	  if it was frozen.
-
-	* gc.c (rb_memerror): raise nomem_error without backtrace if failed to
-	  make backtrace.
-
-Sat Jun 14 22:52:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_sysread): should not raise at empty
-	  read.  a patch from Arthur Schreiber at [ruby-core:17245].
-
-Sat Jun 14 16:55:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): no need to expand root path which has no
-	  short file name.  [ruby-dev:35095]
-
-Sat Jun 14 11:59:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.h (STACK_UPPER): moved from gc.c
-
-	* thread.c, thread_{pthread,win32}.c (ruby_init_stack,
-	  ruby_thread_init_stack): moved stack initialization from gc.c.
-
-Sat Jun 14 11:57:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.h (STACK_UPPER): moved from gc.c
-
-	* thread.c, thread_{pthread,win32}.c (ruby_init_stack,
-	  ruby_thread_init_stack): moved stack initialization from gc.c.
-
-Sat Jun 14 07:52:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (ruby_initial_gc_stress): defined.
-	  (ruby_initial_gc_stress_ptr): defined.
-
-	* debug.c (set_debug_option): use ruby_initial_gc_stress_ptr for
-	  gc_stress option.
-
-Sat Jun 14 00:09:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (ruby_gc_stress): moved to rb_objspace_t.
-
-	* gc.c (gc_stress_get, gc_stress_set): VM local attribute.
-
-	* signal.c (sigsegv): ditto.
-
-Fri Jun 13 21:55:48 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_equal_p): Rational(0,x) and 0 are equivalent,
-	  anyway.
-
-Fri Jun 13 21:26:39 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (string_to_c, nucomp_s_convert): preserve the current
-	  backref.
-
-	* rational.c (string_to_r, nurat_s_convert): ditto.
-
-	* include/ruby/intern.h (rb_match_busy): added a declaration.
-
-Fri Jun 13 18:08:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.xmlschema): don't accept decimal dot without
-	  fractional digits.  fractional digits handling simplified.
-
-Fri Jun 13 17:20:40 2008  wanabe  <s.wanabe@gmail.com>
-
-	* complex.c (string_to_c_internal): save and restore backref.
-	  fixed [ruby-dev:34991]
-
-Fri Jun 13 17:06:20 2008  wanabe  <s.wanabe@gmail.com>
-
-	* rational.c (string_to_r_internal): save and restore backref.
-	  fixed [ruby-dev:34990]
-
-Fri Jun 13 14:41:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT.ja: update about Fixnum. reported in
-	   <http://www.tmtm.org/ja/tdiary/?date=20080611#p01>
-
-	* README.EXT.ja: describe about StringValueCStr().
-
-	* README.EXT: ditto.
-
-Fri Jun 13 14:24:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_memerror): exit with EXIT_FAILURE instead of magic number.
-
-	* gc.c (ruby_stack_check): STACK_LENGTH should be less than
-	  STACK_LEVEL_MAX.
-
-Fri Jun 13 12:55:37 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (sort_by_i): use NODE_DOT2 instead of NODE_MEMO to avoid
-	  extra calls to is_pointer_to_heap() in GC.
-
-	* enum.c (enum_zip): ditto.
-
-Fri Jun 13 00:41:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb: add a test.
-
-Thu Jun 12 23:30:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_unlock): fix cond_notified consistency.
-
-Thu Jun 12 22:19:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (native_sleep): fixed previous commit.
-
-Thu Jun 12 21:59:17 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c, vm_core.h, vm.c, thread_pthread.c, thread_win32.c: add
-	  deadlock detection.  [ruby-dev:35044]
-
-	* bootstraptest/test_thread.rb: add tests for above.
-
-Thu Jun 12 21:39:55 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: refactoring.
-
-	* rational.c: ditto.
-
-Thu Jun 12 17:11:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regint.h: undefine USE_CAPTURE_HISTORY which is mentioned as
-	  unsupported in the Onigiruma document.
-
-Thu Jun 12 13:36:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (rb_intern): use rb_intern2 with strlen for
-	  constant symbols to optimize strlen.
-
-Thu Jun 12 08:47:51 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): should use io_read_encoding(), not
-	  io_input_encoding().
-
-	* io.c (rb_io_getline_1): reduce calling of io_read_encoding().
-
-	* string.c (rb_str_scan): need not to restore $~ value, so avoid
-	  pinning match object.
-
-Thu Jun 12 02:49:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/stringio/stringio.c (strio_init): rewind when reopened.
-
-Thu Jun 12 02:43:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_zip): ANSI style.
-
-Thu Jun 12 02:25:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_reopen): clear read buffer.
-
-Thu Jun 12 00:56:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk: check proper conditions.  [ruby-dev:35047]
-
-Wed Jun 11 23:33:13 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fread): bypass buffered read if reading buffer is empty.
-
-	* io.c (remain_size): do not add extra one byte.
-
-Wed Jun 11 12:15:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_normal_exit): hide stderr output
-	  when success.
-
-Wed Jun 11 09:26:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (encs): need to pass miniruby path for windows.
-
-Wed Jun 11 05:53:20 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, eval_intern.h (PASS_PASSED_BLOCK):
-	  set a VM_FRAME_FLAG_PASSED flag to skip this frame when
-	  searching ruby-level-cfp.
-
-	* eval.c, eval_intern.h, proc.c: fix to check cfp.  if there is
-	  no valid ruby-level-cfp, cause RuntimeError exception.
-	  [ruby-dev:34128]
-
-	* vm_core.h, vm_evalbody.c, vm.c, vm_dump.c, vm_insnhelper.c,
-	  insns.def: rename FRAME_MAGIC_* to VM_FRAME_MAGIC_*.
-
-	* KNOWNBUGS.rb, bootstraptest/test*.rb: move solved bugs.
-
-Wed Jun 11 05:55:31 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: SEGV when tcltk-stubs is enabled.
-
-	* ext/tk/tcltklib.c: avoid error on a shared object.
-
-	* ext/tk/extconf.rb: support --with-tcltkversion
-
-	* ext/tk/README.tcltklib: add document about --with-tcltkversion
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/multi-tk.rb, ext/tk/lib/remote-tk.rb:
-	  not work on $SAFE==4
-
-	* ext/tk/lib/multi-tk.rb: Object#methods returns Symbols on Ruby1.9.
-
-	* ext/tk/lib/tk/timer.rb: add TkTimer#at_end(proc) to register the
-	  procedure which called at end of the timer.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/itemfont.rb, ext/tk/lib/font.rb:
-	  support __IGNORE_UNKNOWN_CONFIGURE_OPTION__ about font options.
-
-	* ext/tk/lib/*: treat __IGNORE_UNKNOWN_CONFIGURE_OPTION__
-
-	* ext/tk/lib/tkextlib/iwidgets/scrolledcanvas.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledlistbox.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb: bug fix.
-
-	* ext/tk/lib/tk/text.rb: typo. call a wrong method.
-
-	* ext/tk/lib/tk/itemconfig.rb: ditto.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/itemconfig.rb,
-	  ext/tk/lib/tk/canvas.rb: support alias names of option keys.
-
-	* ext/tk/lib/tk/grid.rb: lack of module-method definitions.
-
-	* ext/tk/lib/tk/pack.rb, ext/tk/lib/tk/grid.rb: increase supported
-	  parameter patterns of configure method.
-
-	* ext/tk/lib/tk.rb: add TkWindow#grid_anchor, grid_column, grid_row.
-
-	* ext/tk/lib/tk/wm.rb: methods of Tk::Wm_for_General module cannot
-	  pass the given block to methods of Tk::Wm module.
-
-	* ext/tk/lib/tk/wm.rb: Wm#overrideredirect overwrites argument to
-	  an invalid value.
-
-	* ext/tk/lib/tk.rb: fix memory (object) leak bug.
-
-	* ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: fix memory leak.
-
-	* ext/tk/sample/demos-jp/aniwave.rb, ext/tk/sample/demos-en/aniwave.rb:
-	  bug fix.
-
-	* ext/tk/lib/tkextlib/blt/component.rb,
-	  ext/tk/lib/tkextlib/tile/tentry.rb,
-	  ext/tk/lib/tkextlib/tile/treeview.rb: ditto.
-
-	* ext/tk/lib/tkextlib/tile/tpaned.rb: improve TPaned#add.
-
-	* ext/tk/sample/demos-jp/widget, ext/tk/sample/demos-en/widget,
-	  ext/tk/sample/demos-jp/style.rb, ext/tk/sample/demos-en/style.rb,
-	  ext/tk/sample/demos-jp/bind.rb, ext/tk/sample/demos-en/bind.rb:
-	  bug fix.
-
-	* ext/tk/sample/ttk_wrapper.rb: ditto.
-
-	* ext/tk/sample/ttk_wrapper.rb: support "if __FILE__ == $0" idiom.
-
-	* ext/tk/sample/tktextio.rb: add binding for 'Ctrl-u' at console mode.
-
-	* ext/tk/lib/tkextlib/tile.rb, ext/tk/lib/tkextlib/tile/style.rb,
-	  ext/tk/sample/ttk_wrapper.rb: improve treating and control themes.
-	  add Tk::Tile.themes and Tk::Tile.set_theme(theme).
-
-	* ext/tk/lib/tkextlib/tile.rb: lack of autoload definitions.
-
-	* ext/tk/lib/tkextlib/tile/tnotebook.rb: cannot use kanji (not UTF-8)
-	  characters for headings.
-
-	* ext/tk/lib/tkextlib/tkDND/shape.rb: wrong package name.
-
-	* ext/tk/tkutil/tkutil.c: improve handling callback-subst-keys.
-	  Now, support longnam-keys (e.g. '%CTT' on tkdnd-2.0; however, still
-	  not support tkdnd-2.0 on tkextlib), and symbols of parameters (e.g.
-	  :widget=>'%W', :keycode=>'%k', '%x'=>:x, '%X'=>:root_x, and so on;
-	  those are attributes of event object). It means that Ruby/Tk accepts
-	  not only "widget.bind(ev, '%W', '%k', ...){|w, k, ...| ... }", but
-	  also "widget.bind(ev, :widget, :keycode, ...){|w, k, ...| ... }".
-	  It is potentially incompatible, when user passes symbols to the
-	  arguments of the callback block (the block receives the symbols as
-	  strings). I think that is very rare case (probably, used by Ruby/Tk
-	  experts only). When causes such trouble, please give strings instead
-	  of such symbol parameters (e.g. call Symbol#to_s method).
-
-	* ext/tk/lib/tk/event.rb, ext/tk/lib/tk/validation.rb,
-	  ext/tk/lib/tkextlib/blt/treeview.rb,
-	  ext/tk/lib/tkextlib/winico/winico.rb: ditto.
-
-	* ext/tk/tkutil/tkutil.c: strings are available on subst_tables on
-	  TkUtil::CallbackSubst class (it is useful on Ruby 1.9).
-
-	* ext/tk/lib/tk/spinbox.rb, ext/tk/lib/tkextlib/iwidgets/hierarchy.rb,
-	  ext/tk/lib/tkextlib/iwidgets/spinner.rb,
-	  ext/tk/lib/tkextlib/iwidgets/entryfield.rb,
-	  ext/tk/lib/tkextlib/iwidgets/calendar.rb,
-	  ext/tk/lib/tkextlib/blt/dragdrop.rb,
-	  ext/tk/lib/tkextlib/tkDND/tkdnd.rb,
-	  ext/tk/lib/tkextlib/treectrl/tktreectrl.rb,
-	  ext/tk/lib/tkextlib/tktable/tktable.rb: disable code piece became
-	  unnecessary by reason of the changes of ext/tk/tkutil/tkutil.c.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/multi-tk.rb: change strategy to define
-	  the constant WITH_ENCODING.
-
-	* ext/tk/lib/tk.rb: fix bug on Tk::Encoding.tk_encoding_names.
-
-Wed Jun 11 03:40:37 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/find.rb (Find#find): Return an enumerator if no block is
-	  given.
-
-Wed Jun 11 01:28:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/intern.h, proc.c: revert rb_proc_call() and
-	  create rb_proc_call_with_block() instead.
-
-	* include/ruby/ruby.h, eval_jump.c, thread.c, vm_insnhelper.c:
-	  rb_blockptr should not be exposed.
-
-Tue Jun 10 21:07:19 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_float.rb: add tests. [ruby-dev:35009]
-
-Tue Jun 10 20:55:57 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): need not to initialize optional
-	  argument for rb_scan_args().
-
-Tue Jun 10 20:13:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: negate default of --without-ext if --with-ext is
-	  given.
-
-	* ext/extmk.rb: negate default of --without-ext.
-
-Tue Jun 10 17:43:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle_bang): update RDoc.  [ruby-dev:35034]
-
-Tue Jun 10 17:30:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_obj_instance_exec, rb_mod_module_exec):
-	  added prototypes.
-
-Tue Jun 10 17:00:29 2008  wanabe  <s.wanabe@gmail.com>
-
-	* util.c (ruby_strtod): ruby_strtod don't allow a trailing
-	  decimal point like "7.". [ruby-dev:34835] [ruby-dev:35009]
-
-Tue Jun 10 13:48:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rational.c (nurat_s_convert): need not to initialize optional
-	  argument for rb_scan_args().
-
-Tue Jun 10 12:58:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/wait/wait.c (FIONREAD_POSSIBLE_P): suppress warnings.
-
-Tue Jun 10 12:43:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (CONST_ID_CACHE): fixed statement expression.
-
-Tue Jun 10 11:25:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (rb_argv0): revised for ext/tk.
-
-	* include/ruby/encoding.h: not to use varargs.h since requiring C89.
-
-Tue Jun 10 00:50:51 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/ruby.h, vm_core.h: add a type rb_blockptr.
-
-	* vm_insnhelper.c (vm_yield_with_cfunc): vm_yield_with_cfunc receives
-	  blockptr and passes it to iterating block.
-
-	* proc.c (rb_proc_call), include/ruby/intern.h: rb_proc_call receives
-	  blockptr.  "rb_proc_call(self, args, blockptr)" in C corresponds to
-	  "self.call(*args, &block)" in Ruby.
-
-	* proc.c (proc_call): pass blockptr to block that is written in C.
-
-	* proc.c (curry): receive blockptr and pass it to original proc.
-	  [ruby-core:15551]
-
-	* vm.c (invoke_block_from_c): fix for change of vm_yield_with_cfunc.
-
-	* thread.c (call_trace_proc), eval_jump.c (rb_call_end_proc): fix for
-	  change of rb_proc_call.
-
-Tue Jun 10 00:10:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (test-knownbug): give $(OPTS) for bootstraptest/runner.rb.
-
-Mon Jun  9 23:10:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (Init_stack): don't declare.  it is a macro now.
-
-Mon Jun  9 22:46:47 2008  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c : treat []&&= in virtually the same way as []||=.
-	  [ruby-dev:34679]
-
-Mon Jun  9 21:17:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (clean): remove build directories.
-
-	* test_knownbug.rb -> KNOWNBUGS.rb: renamed.
-
-	* common.mk: apply above change.
-
-Mon Jun  9 21:14:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): set flags.
-
-Mon Jun  9 21:09:02 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb -> ./test_knownbug.rb: moved.
-
-	* common.mk: add a rule "test-knownbug".
-
-Mon Jun  9 21:00:32 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): can accept Complex('i').
-	  [ruby-dev:34991]
-
-Mon Jun  9 18:25:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (CONST_ID): constant ID cache for non-gcc.
-
-	* *.c: no cache in init functions.
-
-Mon Jun  9 17:56:30 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#delete_if): Call to_a.
-	  (SortedSet#delete_if, TC_SortedSet#test_sortedset): Use super to
-	  yield elements in sorted order; [ruby-core:17144] by Arthur
-	  Schreiber.
-	  (SortedSet#each, SortedSet#each, TC_Set#test_each)
-	  (TC_SortedSet#test_sortedset): Return self; [ruby-dev:35002] by
-	  Arthur Schreiber.
-
-Mon Jun  9 17:47:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): close IO object if fd is already closed.
-	  (rb_p): call rb_io_write just once.
-
-Mon Jun  9 15:37:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (require_libraries): req_list may be NULL.  [ruby-dev:35008]
-
-Mon Jun  9 14:18:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_vm_struct): moved src_encoding_index,
-	  ruby_debug, ruby_verbose, and rb_progname.
-
-	* ruby.c (rb_argv0): no longer used.
-
-	* ruby.c (struct cmdline_options): moved setids and req_list, and the
-	  latter is now an array, to prevent memory leak.
-
-	* ruby.c (cmdline_options_init): added.
-
-	* ruby.c (add_modules, require_libraries, init_ids, forbid_setid): use
-	  struct cmdline_options.
-
-	* vm.c (vm_init2): initialize src_encoding_index.
-
-	* vm.c: getters/setters for ruby_{debug,verbose}.
-
-Mon Jun  9 09:54:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (Init_stack): make to call ruby_init_stack.
-
-Mon Jun  9 08:12:40 2008  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.c, vm.c, proc.c : revert r17021. [ruby-dev:34997]
-
-Mon Jun  9 03:12:23 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/pending.rb: move/remove solved issues.
-
-	* bootstraptest/test_class.rb: ditto.
-
-Mon Jun  9 02:32:58 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/zlib/zlib.c (rb_deflate_init_copy): Copy buffers as well.
-	  [ruby-list:45018]
-
-Sun Jun  8 22:22:20 2008  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.c, vm.c, proc.c (proc_call): allow call method with
-	  block that both is written in C. [ruby-dev:34273] [ruby-core:15551]
-
-	*  proc.c (curry): use proc_call instead of rb_proc_call.
-	  [ruby-dev:34273] [ruby-core:15551]
-
-Sun Jun  8 21:50:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/zlib/test_zlib.rb: add tests to achieve over 90% test coverage
-	  of zlib.
-
-Sun Jun  8 20:12:47 2008  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.c (vm_throw): regard break as return in lambda.
-	  [ruby-dev:34646]
-
-Sun Jun  8 19:17:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c: add a build option "CALC_EXACT_MALLOC_SIZE".
-	  This option enables to calculate exact size of current
-	  allocated size by malloc().  You can access these information
-	  with GC.malloc_allocated_size and GC.malloc_allocations.
-	  This option consume additional memory as a header of each memory
-	  object.  This option also helps to find out xmalloc()/xfree()
-	  consistency.  If you get trouble with this option, some extension
-	  using "free()" instead of "xfree()".
-	  This options is disabled by default.
-
-Sun Jun  8 18:15:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* array.c, bignum.c, cont.c, dir.c, dln.c, encoding.c, enumerator.c,
-	  enumerator.c (enumerator_allocate), eval_jump.c, file.c, hash.c,
-	  io.c, load.c, pack.c, proc.c, random.c, re.c, ruby.c, st.c,
-	  string.c, thread.c, thread_pthread.c, time.c, util.c, variable.c,
-	  vm.c, gc.c:
-	  allocated memory objects by xmalloc (ruby_xmalloc) should be
-	  freed by xfree (ruby_xfree).
-
-	* ext/curses/curses.c, ext/dbm/dbm.c, ext/digest/digest.c,
-	  ext/gdbm/gdbm.c, ext/json/ext/parser/parser.c,
-	  ext/json/ext/parser/unicode.c, ext/openssl/ossl_cipher.c,
-	  ext/openssl/ossl_hmac.c, ext/openssl/ossl_pkey_ec.c,
-	  ext/sdbm/init.c, ext/strscan/strscan.c, ext/zlib/zlib.c:
-	  ditto.
-
-Sun Jun  8 01:15:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* hash.c (hash_i): make Hash#hash order insensitive.
-	  (rb_hash_dup): use DUPSETUP.
-
-Sat Jun  7 23:47:35 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/zlib/zlib.c (rb_deflate_initialize, Init_zlib): Fix up
-	  initialize_copy; [ruby-list:45016].
-
-Sat Jun  7 22:15:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (VENDOR_DIR): use LIBDIR instead of PREFIX as well as
-	  SITE_DIR.  a patch from Richard Brown <rbrown AT exherbo.org> in
-	  [ruby-core:17129].
-
-Sat Jun  7 21:37:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_f_open), re.c (rb_reg_search), transcode.c (str_transcode):
-	  suppress warnings.
-
-	* util.c (quorem, rv_alloc, nrv_alloc): only used in dtoa().
-
-Sat Jun  7 16:06:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CFLAGS, CXXFLAGS): append default flags.
-
-Sat Jun  7 01:23:59 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_open_file, rb_io_s_sysopen): fmode should be unsigned int.
-	  fixed [ruby-dev:34979]
-
-Fri Jun  6 23:46:19 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_callee_setup_arg): check simple flag before
-	  calling setup_arg function().  this change reduce function call.
-
-Fri Jun  6 21:51:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (COMMON_HEADERS): include ws2tcpip.h.
-
-	* ext/socket/addrinfo.h (addrinfo, getaddrinfo, getnameinfo,
-	  freehostent, freeaddrinfo): undef before define because these are
-	  macros in some versions of Windows SDK.
-
-	  merged from ruby_1_8.
-
-Fri Jun  6 18:25:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/iconv/utils.rb (default_test): override not to croak.
-
-Fri Jun  6 16:41:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: include ws2tcpip.h. fixed [ruby-Bugs-20528]
-
-Fri Jun  6 15:05:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): clear hash after counting objects.
-
-Fri Jun  6 12:43:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_dir.rb (TestDir::test_glob): glob file names not sorted.
-
-Fri Jun  6 00:05:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.xmlschema): don't use float.  fix
-	  http://rubyforge.org/tracker/index.php?func=detail&group_id=426&atid=1698&aid=20504
-
-Thu Jun  5 23:56:18 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_gc.rb: add tests to achieve over 90% test coverage of
-	  gc.c.
-
-	* test/ruby/test_objectspace.rb: ditto.
-
-	* test/ruby/test_marshal.rb: ditto.
-
-Thu Jun  5 23:40:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (rb_objspace_alloc): this function is needed only when
-	  ENABLE_VM_OBJSPACE macro is defined.
-
-	* vm.c: ditto.
-
-Thu Jun  5 23:31:21 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/stringio/test_stringio.rb: add tests to achieve over 95% test
-	  coverage of stringio.
-
-	* test/strscan/test_stringscanner.rb: ditto for strscan.
-
-Thu Jun  5 23:25:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (ruby_finalize_0): clear trace_func after executing END
-	  procs.
-
-	* thread.c: fix typo.
-
-Thu Jun  5 22:50:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (os_obj_of): heaps may be modified in yield.
-
-Thu Jun  5 21:46:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* st.c (st_reverse_foreach): comment out unused function.
-
-	* util.c (dtoa): ditto.
-
-Thu Jun  5 20:30:46 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_ssl_session.c (ossl_ssl_session_initialize):
-	  Add a null check for ssl; submitted by akira yamada
-	  in [ruby-dev:34950].
-
-	* ext/openssl/ossl_ssl.c (Init_ossl_ssl): Define OP_NO_TICKET if
-	  SSL_OP_NO_TICKET is present; submitted by akira yamada
-	  in [ruby-dev:34944].
-
-	* test/openssl/test_ssl.rb (OpenSSL#test_server_session): Add a
-	  workaround for the case where OpenSSL is configured with
-	  --enable-tlsext; submitted by akira yamada in [ruby-dev:34944].
-
-Thu Jun  5 20:24:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_set_trace_func_m): fix check for proc argument.
-
-Thu Jun  5 20:17:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/document.rb (REXML::Document:write): leaky modification
-	  trans -> transitive.  [ruby-dev:32040], r13686
-
-	* lib/rexml/text.rb (Text.check): fix check for illegal character.
-
-Thu Jun  5 14:03:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): find encoding without options.
-
-Thu Jun  5 07:48:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* string.c (hash): should be "static".
-
-Thu Jun  5 01:47:18 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_transcode.rb: add tests for iso-2022-jp.
-
-Thu Jun  5 01:27:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb: add tests.
-
-Wed Jun  4 23:10:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/zlib/zlib.c (rb_gzfile_set_mtime): fix typo.
-
-Wed Jun  4 18:53:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_alloc): RDoc updated.  a patch from Gaston
-	  Ramos <ramos.gaston at gmail.com> in [ruby-core:17073].
-
-Wed Jun  4 18:36:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc.rb: massive spelling correction patch from Evan Farrar
-	  <evanfarrar at gmail.com> in [ruby-doc:1382] applied.
-
-Wed Jun  4 17:52:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_iconv): fix for length argument and now
-	  allows range.  [ruby-core:17092]
-
-Wed Jun  4 15:45:41 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_with_index, enumerator_with_memo): Fix
-	  grammo in rdoc.
-
-Wed Jun  4 13:06:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CFLAGS, CXXFLAGS): include additional flags to
-	  CFLAGS and CXXFLAGS while configuration.
-
-Tue Jun  3 23:06:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/strscan/strscan.c (strscan_scan_full, strscan_search_full): fix
-	  document.
-
-Tue Jun  3 22:37:26 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/strscan/strscan.c (strscan_exist_p): fix document.
-
-Tue Jun  3 22:33:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_dir.rb: add tests to achieve over 90% test coverage
-	  of dir.c.
-
-	* test/ruby/test_encoding.rb: add tests for dummy?, name_list and
-	  aliases.
-
-	* test/ruby/test_marshal.rb: add some tests.
-
-Tue Jun  3 22:25:51 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb: new tests for etc.
-
-Tue Jun  3 19:35:02 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_with_memo): New method: with_memo().
-
-Tue Jun  3 20:04:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (miniruby$(EXEEXT)): miniruby cannot be
-	  written by miniruby itself.
-
-Tue Jun  3 19:33:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_init_copy): Take care of
-	  initialize_copy as well as initialize.
-
-Tue Jun  3 16:06:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): fix for non-existent files and SFN of
-	  symlinks.  [ruby-talk:303736]
-
-Tue Jun  3 15:12:01 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#classify): Back out the `group_by' alias.
-	  Better think twice.
-
-Tue Jun  3 15:00:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#collect, Set#select): Back out.  I thought it
-	  was consistent but turned out to be wrong.
-
-Tue Jun  3 13:41:08 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#collect, Set#select): Override Enumerable
-	  methods and make them return a set. [ruby-core:17055]
-	  (Set#delete_if, Set#collect!, Set#reject!, Set#classify)
-	  (Set#divide, Set#delete_if): Return an enumerator if no block is
-	  given.
-	  (Set#classify): Define an alias `group_by' to override that of
-	  Enumerable.
-
-Tue Jun  3 13:35:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (run_exec_pgroup): C99 ism.
-
-Tue Jun  3 12:51:57 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_allocate, enumerator_ptr): Properly
-	  detect if the object is initialized and raise error when
-	  appropriate.
-	  (enumerator_initialize): Fix a typo in rdoc. [ruby-core:17052]
-
-Tue Jun  3 01:21:51 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_method.rb: add a test.
-
-Tue Jun  3 00:26:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* marshal.c (w_object): add a check for modification of array during
-	  its dump.
-
-Mon Jun  2 22:27:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enc/iso_8859_5.c: Large omicron should lowercase to small omicron.
-
-	* test/ruby/test_big5.rb, test/ruby/test_cp949.rb,
-	  test/ruby/test_euc_jp.rb, test/ruby/test_euc_kr.rb,
-	  test/ruby/test_euc_tw.rb, test/ruby/test_gb18030.rb,
-	  test/ruby/test_gbk.rb, test/ruby/test_iso_8859.rb,
-	  test/ruby/test_koi8.rb, test/ruby/test_shift_jis.rb,
-	  test/ruby/test_windows_1251.rb: new tests for encoding.
-
-	* test/ruby/test_utf16.rb, test/ruby/test_utf32.rb,
-	  test/ruby/test_regexp.rb: add tests.
-
-Mon Jun  2 21:56:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_file.rb: add tests for uninitialized object.
-
-	* test/ruby/test_class.rb: ditto.
-
-	* test/ruby/test_thread.rb: ditto.
-
-Mon Jun  2 21:44:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* re.c: fix SEGV by Regexp.allocate.names, Match.allocate.names, etc.
-
-	* test/ruby/test_regexp.rb: add tests for above.
-
-	* io.c: fix SEGV by IO.allocate.print, etc.
-
-	* test/ruby/test_io.rb: add tests for above.
-
-Mon Jun  2 19:17:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_argf.rb (teardown): remove renamed temporary files.
-
-Mon Jun  2 18:51:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (wait_writable): wait until target files can be
-	  written actually.
-
-	* win32/Makefile.sub (LDSHARED_0, LINK_SO): get rid of failure of
-	  mt.exe.
-
-Mon Jun  2 16:26:17 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/delegate.rb (Delegator::MethodDelegation#respond_to):
-	  respond_to? should now take optional second argument; submitted
-	  by Jeremy Kemper <jeremy at bitsweat.net> in [ruby-core:17045].
-
-Mon Jun  2 16:14:18 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/erb.rb (ERB::Compiler::TrimScanner#scan_line): Oops.  This
-	  change did not apply to trunk.  Backed out.
-
-Mon Jun  2 16:08:24 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/erb.rb (ERB::Compiler::TrimScanner#scan_line): Fix a bug
-	  where tokens are not yielded one by one.
-
-	* test/erb/test_erb.rb (TestERBCore#_test_01)
-	  (TestERBCore#test_02_safe_04): The expected value should come
-	  first for assert_equal().
-
-Mon Jun  2 13:06:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* mkconfig.rb: hide build path from rbconfig.rb.
-
-Mon Jun  2 08:46:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strtod, dtoa): initialize more variables for error
-	  handling.
-
-Mon Jun  2 04:55:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* suppress warnings on cygwin, mingw and mswin.
-
-Mon Jun  2 04:35:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gb18030.c (gb18030_code_to_mbc): add 0x80000000
-	  for 4bytes character.
-
-Mon Jun  2 03:52:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_arg0): reverted used variable definition.
-
-Mon Jun  2 03:23:25 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gb18030.c (gb18030_mbc_to_code): mask by 0x7FFFFFFF
-	  because OnigCodePoint will be used as 32bit signed int.
-	  Masking by 0x7FFFFFFF is ok on GB18030;
-	  Minimum 4bytes character is 0x81308130.
-
-Sun Jun  1 22:29:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* rational.c (string_to_r_internal): use rb_isdigit.
-
-	* marshal.c (long_toobig): use %zd.
-
-	* ruby.c (set_arg0): move unused variable definition.
-
-Sun Jun  1 12:18:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* insns.def (DEFINE_INSN): subtract of pointers is ptrdiff_t.
-	  this is not int on 64bit system.
-
-	* vm_dump.c (control_frame_dump): ditto.
-
-	* vm_dump.c (stack_dump_each): ditto.
-
-	* vm_dump.c (debug_print_register): ditto.
-
-	* vm_dump.c (debug_print_pre): ditto.
-
-	* transcode.c (str_transcode): ditto.
-
-Sun Jun  1 10:32:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): show coredump status.
-
-Sat May 31 23:33:34 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README, README.ja: Add a note about default C flags.
-
-Sat May 31 23:02:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): clear given hash.
-
-Sat May 31 20:28:10 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests.
-
-Sat May 31 19:11:39 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_16{be,le}.c (utf16{be,le}_code_to_mbc):
-	  fix codepoint to bytes.
-
-Sat May 31 18:28:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* suppress warnings with -Wwrite-string.
-
-Sat May 31 18:26:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_delete_if): should return enumerator if no block
-	  is given.  [ruby-dev:34901]
-
-Sat May 31 15:58:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in (warnflags): defaulted to -Wall
-	  -Wno-parentheses with gcc.  [ruby-dev:34810]
-
-Sat May 31 15:17:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/mvm.h: new header file for MVM, and moved rb_vm_t and
-	  rb_thread_t from vm_core.h.
-
-Sat May 31 12:02:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): show pid when fail.
-
-Fri May 30 23:55:56 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_rubyoptions.rb: add a test of RUBY_DESCRIPTION.
-
-Fri May 30 22:47:17 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests.
-
-Fri May 30 22:40:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_signal.rb: add tests to achieve over 80% test
-	  coverage of signal.c.
-
-Fri May 30 22:28:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* signal.c (esignal_signo): fix SignalException#signo which returned
-	  nil absolutely.
-
-	* signal.c (esignal_init): always prepend "SIG" to a string that is
-	  returned by SignalException#signm.
-
-Fri May 30 22:17:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_argf.rb: rename a conflicting method name.
-
-	* test/ruby/test_string.rb: ditto.
-
-	* test/ruby/test_io.rb: ditto.
-
-Fri May 30 22:14:37 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (defined_expr): fix SEGV by defined?([1]).
-
-Fri May 30 12:18:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (prelude.c): simply depends on PREP.  [ruby-dev:34877]
-
-	* enc/make_encdb.rb, enc/trans/make_transdb.rb: ditto.
-
-Fri May 30 10:55:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_unblock_callback), thread.c
-	  (set_unblock_function), thread_{pthread,win32}.c (native_sleep):
-	  extracted from struct rb_thread_struct.
-
-	* thread.c (reset_unblock_function): not check interrupts at leaving
-	  blocking region.  [ruby-dev:34874]
-
-Fri May 30 06:09:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_8.c: add UTF8-MAC (UTF-8-MAC).
-
-Fri May 30 04:17:13 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_count, count_all_i, Init_Enumerable),
-	  array.c (rb_ary_count): If no argument or block is given, count
-	  the number of all elements.
-
-Fri May 30 03:12:18 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_bn.c (ossl_bn_s_rand, ossl_bn_s_pseudo_rand):
-	  Int should be enough here.
-
-Fri May 30 02:35:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_bn.c (ossl_bn_s_rand, ossl_bn_s_pseudo_rand),
-	  ext/openssl/ossl_pkey_dh.c (ossl_dh_s_generate)
-	  (ossl_dh_initialize),
-	  ext/openssl/ossl_pkey_dsa.c (ossl_dsa_s_generate),
-	  ext/openssl/ossl_rand.c (ossl_rand_bytes)
-	  (ossl_rand_pseudo_bytes, ossl_rand_egd_bytes),
-	  ext/openssl/ossl_x509store.c (ossl_x509stctx_set_error): Do not
-	  use FIX2INT() without checking the value type.  Use NUM2INT()
-	  instead; found by akr in [ruby-dev:34890].
-
-Fri May 30 02:08:20 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* signal.c (esignal_init): handle a non-integer argument correctly,
-	  allowing SignalException.new(:INT).
-
-Fri May 30 00:59:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests.
-
-Thu May 29 22:51:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_require.rb: add a test for load with wrap flag, to
-	  achieve 100% test coverage of eval_jump.c.
-
-Thu May 29 22:47:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_argf.rb: new tests for ARGF, to achieve over 85% test
-	  coverage of file.c.
-
-	* test/ruby/test_io.rb: add tests.
-
-Thu May 29 22:41:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (argf_readchar): raise EOFError, synchronizing IO#readchar.
-
-Thu May 29 22:29:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (argf_external_encoding, argf_internal_encoding): fix SEGV by
-	  ARGF.external_encoding.
-
-Thu May 29 17:52:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/extconf.rb: search zlib1, and regard mswin32 later than VC6
-	  as WIN32.  [ruby-core:16984]
-
-Wed May 28 18:05:28 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_nitems, Init_Array): Axe Array#nitems().
-	  cf. [ruby-dev:34676]-[ruby-dev:34713]
-
-Wed May 28 17:50:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/mkexports.rb (Exports#objdump, Exports#each_line): extracted.
-
-Wed May 28 17:41:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (MKPREP): appended $(RBCONFIG).
-
-	* common.mk (enc.mk, prelude.c): not depend on $(RBCONFIG) on mswin32
-	  to get of compiling twice each time.
-
-	* win32/Makefile.sub (prelude.c): not depend on $(PREP).
-
-Wed May 28 17:37:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/mkexports.rb (Exports::Mswin#each_export): speed up.
-
-Wed May 28 16:41:59 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): Call rb_ary_modify_check() at the
-	  beginning. [rubyspec]
-
-Wed May 28 16:12:44 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb (WEBrick::HTTPServlet::CGIHandler#do_GET):
-	  Set the HTTP status code to 302 if a Location header field is
-	  present and the status code is not valid as a client
-	  redirection.  cf. RFC 3875 6.2.3, 6.2.4.
-
-Wed May 28 15:53:52 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/trans/japanese.c (to_SHIFT_JIS_EF_infos): typo.
-
-Wed May 28 15:18:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/singleton.rb (SingletonClassMethods): _load should be public.
-
-Wed May 28 13:30:43 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add workaround for Unicode to CP932.
-	  U+2015->0x815C, U+2225->0x8161, U+FF0D->0x817C, U+FF3C->0x815F,
-	  U+FF5E->0x8160, U+FFE0->0x8191, U+FFE1->0x8192, U+FFE2->0x81CA
-
-Wed May 28 12:52:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object, marshal_dump, r_object0, marshal_load): search
-	  private methods too.  [ruby-dev:34671]
-
-	* object.c (convert_type): ditto.
-
-Wed May 28 08:42:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c: "%" is required before PRI?VALUE.
-
-Tue May 27 22:10:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.c (error_handle): SystemExit and SignalException throws
-	  TAG_RAISE but not TAG_FATAL.
-
-	* thread.c (rb_thread_execute_interrupts): delay interrupts during
-	  raising exceptions.  [ruby-dev:34855]
-
-Tue May 27 20:18:30 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): Return an empty array instead of
-	  nil when pos is valid and len is adjusted from a valid value to
-	  zero; caught by RubySpec.
-
-Tue May 27 19:12:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (MKPREP), common.mk, win32/Makefile.sub (prelude.c): get
-	  rid of depending PREP with nmake.
-
-	* common.mk (encs): depends on libruby.
-
-Tue May 27 19:00:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/stringio/stringio.c (strio_each_char, Init_stringio): Add
-	  StringIO#{each_char,chars}.
-	  (Init_stringio): Fix StringIO#bytes.
-
-Tue May 27 17:54:35 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/stringio/stringio.c (strio_each_byte): Return self instead
-	  of nil as the rdoc says.
-
-Tue May 27 15:36:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (check_int): use PRIxVALUE format specifier.
-
-	* numeric.c (check_uint, rb_num2fix, int_chr): ditto.
-
-	* numeric.c (num_fdiv): fallback to_f should always return float
-	  result.  should not use #quo that may return rational.
-
-	* numeric.c (num_div): should raise ZeroDivisionError.
-
-	* numeric.c (fix_divide): ditto.
-
-	* test/ruby/test_numeric.rb (TestNumeric::test_divmod): avoid
-	  ZeroDivisionError in tests.
-
-Tue May 27 13:14:53 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_to_a): Pass arguments through to #each().
-	  (enum_sort): Follow the enum_to_a signature change.
-	  (enum_reverse_each): Add #reverse_each().
-
-Tue May 27 13:12:37 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* io.c (Init_IO): Define ARGF.{lines,bytes,chars}.
-
-Tue May 27 12:06:37 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (BUFCHECK): wrong condition. [ruby-core:16921]
-
-	* file.c (file_expand_buf): shouldn't use buflen for length of string.
-
-Mon May 26 18:24:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (BUFCHECK): no resize if enough room.
-
-	* file.c (file_expand_path): use BUFCHECK.
-
-Mon May 26 17:48:42 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (struct enumerator, enumerator_init)
-	  (enumerator_init_copy, enumerator_each): Eliminate iter.
-	  (enumerator_ptr): Do not hardcode the class name.
-	  (enumerator_with_index): Delay variable initialization after
-	  RETURN_ENUMERATOR().
-
-Mon May 26 17:23:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (file_expand_path): add more space for '/'.
-
-	* file.c (file_expand_path): should reset address of p after calling
-	  rb_str_resize(). [ruby-dev:34800]
-
-Mon May 26 16:49:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode): use run-hooks if run-mode-hook is
-	  not available.  a patch from Kazuhiro NISHIYAMA <zn at mbf.nifty.com>
-	  in [ruby-dev:34853].
-
-Mon May 26 16:41:35 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (ntfs_tail): filename which starts with '.' is valid.
-
-	* file.c (file_expand_path): cygwin symlink support.
-
-Mon May 26 07:15:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (rb_vm_bugreport): rb_make_backtrace has no arguments.
-
-Mon May 26 01:17:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): signal description
-	  refined.
-
-Mon May 26 00:52:52 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (env_each_key, env_each_value, env_reject_bang)
-	  (rb_env_clear, env_replace): Omit duplicated secure level check.
-
-Mon May 26 00:37:16 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (env_each_value): Do not call env_values() twice.
-
-Sun May 25 17:54:36 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_compile): set local_table for
-	  ISEQ_TYPE_DEFINED_GUARD.
-
-Sun May 25 17:52:25 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_build_body): remove side effect from
-	  VM::InstructionSequence.load.
-
-Sun May 25 04:30:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_modules.rb (remove_json_mixins): change judgment
-	  condition.
-
-Sun May 25 03:54:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_modules.rb (test_ancestors, test_included_modules):
-	  ignore json mixins.
-
-Sun May 25 02:37:25 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_method.c: renamed from vm_method.c.  "vm_method.c" is included
-	  by "vm.c".
-
-	* vm_eval.c: added.  Some codes are moved from "eval.c"
-
-	* common.mk: fix for above changes.
-
-	* compile.c: make a vm_eval(0)
-
-	* eval.c, eval_error.c, eval_intern.h, eval_jump.c, proc.c, vm.c,
-	  id.c, id.h, vm_core.h, vm_dump.c, vm_evalbody.c, vm_insnhelper.c,
-	  blockinlining.c: fix for above changes.  and do some refactoring.
-	  this changes improve rb_yield() performance.
-
-Sat May 24 22:32:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): clear errno at the top of our own
-	  implementation of strtod(3).  [ruby-dev:34834] [ruby-dev:34839]
-
-Sat May 24 15:26:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_set_exception_table, NODE_WHILE, NODE_NEXT): remove
-	  special handling that decrements sp in CATCH_TYPE_NEXT for NODE_WHILE.
-
-	* vm.c (vm_eval_body), vm_insnhelper.c (vm_throw): remove unused code.
-
-Sat May 24 08:13:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode): argc is 1, and argv is &to.
-
-Fri May 23 17:55:11 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): Be consistent with Array#slice()
-	  and String#slice!().  Just return nil when a negative length or
-	  out of boundary index is given instead of raising an exception
-	  via internal functions.
-
-Fri May 23 16:44:34 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (Init_Enumerator): Override
-	  Enumerable::Enumerator#each_with_index with #with_index.
-
-Fri May 23 12:23:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_num_t): moved form vm.h.
-
-	* tool/instruction.rb (RubyVM::Instruction#sp_increase_c_expr),
-	  tool/instruction.rb (RubyVM::VmBodyGenerator#make_header_operands):
-	  omit unused variables.
-
-Fri May 23 08:47:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_equal): == operator should be transitional.
-	  [ruby-dev:34808]
-
-	* error.c (syserr_eqq): === should be able to handle delegated
-	  objects as well.
-
-Fri May 23 06:15:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (rb_iseq_compile_with_option): get rid of segv.
-
-Fri May 23 02:29:14 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (opt_gt|ge|lt|le): use values directly to compare.
-
-Fri May 23 01:15:09 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, eval_intern.h, include/ruby/intern.h, include/ruby/ruby.h,
-	  vm.c, vm_core.h, vm_insnhelper.c: remove pointless "const".
-
-Thu May 22 23:45:17 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (get_destination_insn, get_next_insn, get_prev_insn):
-	  peephole optimization should not ignore ISEQ_ELEMENT_ADJUST.
-
-Thu May 22 20:20:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (check_dump_arg, check_load_arg): check if reentered.
-	  [ruby-dev:34802]
-
-Thu May 22 20:14:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* iseq.c (iseq_load, iseq_data_to_ary): support
-	  ISEQ_TYPE_DEFINED_GUARD.
-
-Thu May 22 19:01:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_get_ruby_level_cfp): moved from eval_intern.h.
-
-	* vm.c (sdr, nsdr): define methods only if VMDEBUG is defined.
-
-Thu May 22 17:18:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (rb_ary_compact_bang): fix reallocation size.
-
-Thu May 22 15:20:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval_intern.h, vm_core.h, include/ruby/intern.h, include/ruby/ruby.h,
-	  vm.c: need to add const to prototypes, of course.
-
-Thu May 22 13:24:43 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm.c, vm_core.h, vm_insnhelper.c: specify "const".
-
-	* vm_opts.h: add a OPT_TOKEN_THREADED_CODE macro.
-
-Thu May 22 12:51:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* insns.def (newhash): fix a variable definition: "const k".
-
-Thu May 22 12:40:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (flatten): check if reentered.  [ruby-dev:34798]
-
-Thu May 22 11:39:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): capture stdout and stderr
-	  of the child process.
-
-Thu May 22 08:28:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (flatten): free memo hash table before raising exception.
-	  [ruby-dev:34789]
-
-Thu May 22 06:30:10 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* array.c (flatten): fix memory leak.
-
-Thu May 22 06:21:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_str_caseeql): added.
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_enc_find_index): use nkf_str_caseeql.
-
-Thu May 22 05:45:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (proc_dup): should copy safe_level from src proc
-	  properly.  a patch from Keita Yamaguchi
-	  <keita.yamaguchi at gmail.com>
-
-Thu May 22 02:46:08 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: do not use Thread#raise. [ruby-dev:34739]
-
-Thu May 22 00:30:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_require.rb: new tests for library requiring, to
-	  achieve over 90% test coverage of dln.c.
-
-	* test/ruby/test_class.rb: add tests to achieve over 90% test coverage
-	  of class.c.
-
-	* test/ruby/test_module.rb: ditto.
-
-Thu May 22 00:15:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, vm_insnhelper.c: specify "const".
-
-Wed May 21 23:20:21 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_eval.rb: fix syntax.
-
-Wed May 21 17:46:17 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_enc_find_index):
-	  use strcasecmp. [ruby-dev:34787]
-
-Wed May 21 16:48:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_compact_bang): avoid forceful realloc.
-
-Wed May 21 07:42:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_usascii_str_new): use rb_str_new.
-
-	* string.c (rb_enc_str_new): ditto.
-
-	* string.c (rb_usascii_str_new2): use rb_str_new2.
-
-Wed May 21 07:22:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c, include/ruby/encoding.h
-	  (rb_enc_associate, rb_enc_associate_index):
-	  returns obj. [ruby-dev:34778]
-
-Wed May 21 04:20:20 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_ascii8bit_encoding): use ENCINDEX_ASCII.
-
-	* encoding.c, include/ruby/encoding.h (rb_ascii8bit_encindex):
-	  added.
-
-	* encoding.c (rb_locale_encoding): use rb_usascii_encoding().
-
-Wed May 21 01:45:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_file_exhaustive.rb (setup): workaround for Windows
-	  Vista.
-
-	* test/ruby/envutil.rb (rubyexec): now Open3.open3 is supported on
-	  Windows.
-
-	* test/ruby/test_process.rb: use ``||'' instead of ``;'' because
-	  cmd.exe not support it.
-
-Wed May 21 01:28:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c, include/ruby/encoding.h (rb_str_transcode):
-	  C API of encoding conversion for Ruby object.
-	  VALUE rb_str_transcode(VALUE str, VALUE to).
-
-	* transcode.c (str_encode, str_encode_bang):
-	  rename from rb_tr_transcode or rb_str_transcode_bang.
-
-Tue May 20 23:26:05 2008  Yusuke Endoh	<mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: fix tests for 64bit CPU.
-
-Tue May 20 20:59:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (rb_nkf_convert) (nkf_enc_without_bom):
-	  reverted. nkf-utf8/nkf.c should be independent of ruby.
-
-	* ext/nkf/nkf.c (options):
-	  moved from nkf-utf8/nkf.c.
-	  override nkf's original settings for Unicode BOM.
-
-Tue May 20 13:20:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_convert), ext/nkf/nkf-utf8/nkf.c
-	  (nkf_enc_without_bom): BOM is not a part of encodings.
-
-	* ext/nkf/nkf.c (Init_nkf), ext/nkf/nkf-utf8/nkf.c (options):
-	  UTF-{16,32} without endian have no sense.
-
-Tue May 20 12:13:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options, process_options): --dump option.
-
-Tue May 20 11:36:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI[diouxX]VALUE): printf format for VALUE.
-
-	* gc.c (assign_heap_slot): suppress a warning.
-
-Tue May 20 03:42:43 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm_insnhelper.c: fix cref in instance_eval
-	  and cvar_base search protocol.
-
-	* bootstraptest/test_knownbug.rb, test_eval.rb: move solved test
-	  and add new tests.
-
-	* test/ruby/test_eval.rb: fix tests for spec.
-
-Tue May 20 01:43:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: fix a test.
-	  "block_given?" returns true if "yield" can be used.
-
-Tue May 20 01:07:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (assignable_gen): when "self = 1" was evaluated, unnecessary
-	  error message was output, which might cause null pointer access.
-
-Tue May 20 08:38:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_enc_strlen_cr): need to set ENC_CODERANGE_7BIT if
-	  search_nonascii() fails.    [ruby-dev:34751]
-
-	* string.c (rb_str_reverse): preserve coderange info if the
-	  receiver is 7bit string.
-
-	* string.c (rb_str_reverse_bang): ditto.
-
-	* string.c (rb_str_reverse_bang): should have called
-	  single_byte_optimizable before rb_str_modify() that clears
-	  coderange info.
-
-	* string.c (tr_trans): handle single bytes more eagerly.
-
-Mon May 19 23:32:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (invoke_block_from_c): fix call flow.
-
-Mon May 19 23:19:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regexec.c (slow_search): check the case when the length is 1.
-	  The behavior of memcmp is undefined if the third argument is 0.
-
-Mon May 19 21:07:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (native_thread_apply_priority):
-	  fix argument range check.  [ruby-dev:33124]
-
-Mon May 19 18:22:35 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_pkcs5.c (ossl_pkcs5_pbkdf2_hmac): Fix the type
-	  of md; pointed out by Takahiro Kambe <taca at back-street.net>
-	  in [ruby-dev:34748].
-
-Mon May 19 17:23:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regparse.c (PINC): use optimized enclen() instead of
-	  ONIGENC_MBC_ENC_LEN().
-
-	* regparse.c (PFETCH): ditto.
-
-	* regparse.c (PFETCH): small optimization.
-
-	* regexec.c (slow_search): single byte encoding optimization.
-
-	* regenc.h (enclen): avoid calling function when encoding's
-	  min_len == max_len.
-
-	* re.c (rb_reg_regsub): rb_enc_ascget() optimization for single
-	  byte encoding.
-
-	* re.c (rb_reg_search): avoid allocating new re_registers if we
-	  already have MatchData.
-
-	* re.c (match_init_copy): avoid unnecessary onig_region_free()
-	  before onig_region_copy.
-
-	* encoding.c (rb_enc_get_index): remove implicit enc_capable check
-	  each time.
-
-	* encoding.c (rb_enc_set_index): ditto.
-
-	* encoding.c (enc_compatible_p): small refactoring.
-
-	* include/ruby/encoding.h (rb_enc_dummy_p): inline
-	  rb_enc_dummy_p() and export related code.
-
-Mon May 19 14:32:03 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* version.h: fix strange change by version.h update tool.
-
-Mon May 19 14:18:13 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move solved tests.
-
-	* bootstraptest/test_eval.rb, test_literal.rb, test_syntax.rb,
-	  test_thread.rb: ditto.
-
-	* test/ruby/test_m17n.rb, test_proc.rb, test_sprintf.rb,
-	  test_string.rb, test/ruby/test_struct.rb: ditto.
-
-Mon May 19 13:23:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_spawn_internal): set last_status when status == -1
-	  because there is no path to set it on win32. this patch is derived
-	  from [ruby-core:16787], submitted by Luis Lavena <luislavena at
-	  gmail.com>
-
-Mon May 19 11:32:47 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, insns.def, eval.c, vm_insnhelper.c: fix CREF handling.
-	  VM value stack frame of block contains cref information.
-	 (dfp[-1] points CREF)
-
-	* compile.c, eval_intern.h, eval_method.c, load.c, proc.c,
-	  vm_dump.h, vm_core.h: ditto.
-
-	* include/ruby/ruby.h, gc.c: remove T_VALUES because of above
-	  changes.
-
-	* bootstraptest/test_eval.rb, test_knownbug.rb: move solved test.
-
-Sun May 18 22:26:51 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/filehandler.rb: should normalize path
-	  name in path_info to prevent script disclosure vulnerability on
-	  DOSISH filesystems. (fix: CVE-2008-1891)
-	  Note: NTFS/FAT filesystem should not be published by the platforms
-	  other than Windows. Pathname interpretation (including short
-	  filename) is less than perfect.
-
-	* lib/webrick/httpservlet/abstract.rb
-	  (WEBrick::HTTPServlet::AbstractServlet#redirect_to_directory_uri):
-	  should escape the value of Location: header.
-
-	* lib/webrick/httpservlet/cgi_runner.rb: accept interpreter
-	  command line arguments.
-
-Sun May 18 02:54:46 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_pack): check errno to detect error of ruby_strtoul.
-
-	* pack.c (pack_unpack): ditto.
-
-	* test/ruby/test_pack.rb: add a test for above.
-
-Sat May 17 23:53:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): fix for short file name on Cygwin.
-
-Sat May 17 18:03:52 2008  Yuki Sonoda (Yugui) <yugui@yugui.jp>
-
-	* vm.c (Init_VM): removed the definition of Thread#initialize,
-	  which is overwritten in Init_Thread and is never used.
-
-Sat May 17 14:01:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): should not free shared pointer, and set
-	  shared.  [ruby-dev:34732]
-
-Sat May 17 12:34:54 2008  Yuki Sonoda (Yugui) <yugui@yugui.jp>
-
-	* thread_pthread.c (Init_native_thread): Kernel#.sleep used never to
-	  sleep on Mac OS X. Reported by arton <artonx AT yahoo.co.jp>.
-
-	* thread_pthread.c (native_sleep): added error checks.
-
-Sat May 17 11:29:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): first dot is not an extension name.
-
-Sat May 17 03:21:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): stop memory leak.  [ruby-dev:34726]
-
-	* re.c (rb_reg_search): need to free allocated buffer in re_register.
-
-	* regexec.c (onig_region_new): more pedantic malloc check.
-
-	* regexec.c (onig_region_resize): ditto.
-
-	* regexec.c (STATE_CHECK_BUFF_INIT): ditto.
-
-	* regexec.c (onig_region_copy): use onig_region_resize.
-
-Fri May 16 12:48:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (to_flo): rb_Float() accepts even strings for input.
-
-	* complex.c (nucomp_to_f): fix wrong message.
-
-	* complex.c (nucomp_to_r): ditto.
-
-	* object.c (rb_Float): do not check NaN for error.  NaN is a part
-	  of valid float values.
-
-Thu May 15 23:36:09 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_string.rb: add tests to achieve over 90% test
-	  coverage of string.c.
-
-	* test/ruby/test_m17n.rb: ditto.
-
-	* test/ruby/test_symbol.rb: ditto.
-
-	* test/ruby/test_pack.rb: ditto.
-
-Thu May 15 23:01:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (tr_find): String#delete returned wrong result when multiple
-	  utf-8 arguments are passed.
-
-	* test/ruby/test_m17n.rb (test_delete): add a test for above.
-
-Thu May 15 22:37:56 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (ripper_warningS): now used.
-
-Thu May 15 15:33:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): support for alternative data stream
-	  and ignored trailing garbage of NTFS.
-
-	* file.c (rb_file_s_basename): ditto.
-
-	* file.c (rb_file_s_extname): ditto.
-
-Thu May 15 13:43:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): no need for forceful warning when
-	  converting to float.  overflow is a nature of float values.
-
-	* parse.y (parser_yylex): ditto.
-
-Thu May 15 13:23:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_prepare_enc): error condition was updated for non
-	  ASCII compatible strings.
-
-Thu May 15 12:19:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/openssl/openssl_missing.c (HMAC_CTX_copy): adopted
-	  prototype change in openssl bundled with newer OpenBSD.
-	  a patch from Takahiro Kambe <taca at back-street.net> in
-	  [ruby-dev:34691].
-
-Wed May 14 22:09:25 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ChangeLog: fix typo.
-
-Wed May 14 21:49:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_object.rb: new tests to achieve over 90% test
-	  coverage of object.c, eval.c and eval_method.c.
-
-	* test/ruby/test_module.rb: ditto.
-
-	* test/ruby/test_trace.rb: ditto.
-
-	* test/ruby/test_integer.rb: ditto.
-
-	* test/ruby/test_float.rb: ditto.
-
-	* test/ruby/test_method.rb: ditto.
-
-	* test/ruby/test_variable.rb: ditto.
-
-	* test/ruby/test_eval.rb: ditto.
-
-	* test/ruby/test_exception.rb: ditto.
-
-	* test/ruby/test_class.rb: ditto.
-
-Wed May 14 12:46:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (insn_operand_intern): remove Qundef related code.
-
-Wed May 14 12:42:36 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_count): Override Enumerable#count for better
-	  performance.
-
-Wed May 14 11:29:06 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: add a "putcbase" instruction.
-
-	* compile.c, insns.def: fix to use putcbase instruction for
-	  class search.  Qundef should not be used.
-
-Wed May 14 07:49:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): defer calling of rb_frame_self() until it
-	  become really necessary.
-
-	* eval.c (rb_call): ditto.
-
-Wed May 14 00:55:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_io_m17n.rb: remove a duplicative method.
-
-	* test/ruby/test_utf16.rb: rename a conflicting method name.
-
-	* test/ruby/test_array.rb: ditto.
-
-	* test/ruby/test_file_exhaustive.rb: ditto.
-
-	* test/ruby/test_hash.rb: ditto.
-
-	* test/ruby/test_env.rb: ditto.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Wed May 14 00:45:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval_method.c (rb_add_method): fix check for warning when
-	  Object#initialize is redefined. (same as 1.8)
-
-Tue May 13 23:32:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_yield): use rb_yield_values2.
-
-	* enum.c (DEFINE_ENUMFUNCS): macro to define enumerator and yielding
-	  functions.
-
-	* enum.c (enum_all_func, enum_any_func, enum_one_func,
-	  enum_none_func): reduced duplicate code.
-
-Tue May 13 15:09:38 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c: Update rdoc.
-	  (enumerator_initialize): Discourage the use.
-	  (enum_each_slice, enum_each_cons, enumerator_each)
-	  (enumerator_with_index): Add a note about a call without a block.
-
-Tue May 13 08:25:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_f_gets): re-enable rdoc.
-	  (rb_f_readline): ditto.
-	  (rb_f_readlines): ditto.
-
-Tue May 13 07:56:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cat): fixed buffer overrun reported by
-	  Christopher Thompson <cthompson at nexopia.com> in [ruby-core:16746]
-
-Mon May 12 23:37:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (collect_local_variables_in_env): remove unnecessary check
-	  which causes: x=1;proc{local_variables}.call #=> []
-
-	* test/ruby/test_variable.rb: add a test for above.
-
-Mon May 12 23:05:24 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c, include/ruby/intern.h (rb_run_exec_options): externed.
-
-	* process.c (save_redirect_fd, save_env_i, save_env, run_exec_dup2,
-	  run_exec_open, run_exec_pgroup, run_exec_rlimit, rb_run_exec_options):
-	  save parent's process environments.
-
-	* process.c (rb_spawn_internal): remove calling run_exec_options()
-	  because cannot restore after spawn.
-
-	* io.c (pipe_open): ditto.
-
-	* test/ruby/test_process.rb (test_execopts_env): upcase environment
-	  variable name for case insensitive platforms.
-
-	* win32/win32.c (init_env): set USER environment variable only when
-	  USERNAME is available.
-
-Mon May 12 22:23:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/date.rb (once): use Object#object_id instead of Symbol#to_i.
-
-Mon May 12 21:34:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/envutil.rb (rubybin): return expanded rubyexe instead of
-	  expanded ruby if available.
-
-Mon May 12 20:19:55 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (grep_i): Be aware of multiple values;
-	  fix [ruby-dev:34653].
-	  (grep_iter_i): Ditto.
-	  (count_i): Ditto.
-	  (find_i): Ditto.
-	  (find_index_i): Ditto.
-	  (find_all_i): Ditto.
-	  (reject_i): Ditto.
-	  (inject_i): Ditto.
-	  (inject_op_i): Ditto.
-	  (partition_i): Ditto.
-	  (group_by_i): Ditto.
-	  (first_i): Ditto.
-	  (sort_by_i): Ditto.
-	  (all_i): Ditto.
-	  (all_iter_i): Ditto.
-	  (any_i): Ditto.
-	  (any_iter_i): Ditto.
-	  (one_i): Ditto.
-	  (one_iter_i): Ditto.
-	  (none_i): Ditto.
-	  (none_iter_i): Ditto.
-	  (min_i): Ditto.
-	  (min_ii): Ditto.
-	  (max_i): Ditto.
-	  (max_ii): Ditto.
-	  (minmax_i): Ditto.
-	  (minmax_ii): Ditto.
-	  (min_by_i): Ditto.
-	  (max_by_i): Ditto.
-	  (minmax_by_i): Ditto.
-	  (member_i): Ditto.
-	  (take_i): Ditto.
-	  (take_while_i): Ditto.
-	  (drop_i): Ditto.
-	  (drop_while_i): Ditto.
-	  (cycle_i): Ditto.
-
-	* enum.c (each_with_index): Update rdoc.  each_with_index() takes
-	  arguments that are passed through to each(), and a hash preserves
-	  key order.
-
-Mon May 12 19:05:24 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_spawn_internal): remove calling run_exec_options()
-	  because cannot restore after spawn. we'll fix this later.
-
-Mon May 12 18:16:44 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_spawn_internal): need to call run_exec_options() before
-	  spawn if the platform doesn't have fork. [ruby-dev:34647]
-
-Mon May 12 15:20:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (ruby_vm_xmalloc): increase malloc_increase only if malloc
-	  succeeds.  failed malloc size can be huge.  it may increase
-	  malloc_limit too big which cause less GC and memory full.
-	  (ruby_vm_xrealloc): ditto.
-	  (rb_objspace): make params.limit and params.increase size_t.
-
-Mon May 12 15:04:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_prepare_re): made non static with small refactoring.
-
-	* ext/strscan/strscan.c (strscan_do_scan): should adjust encoding
-	  before regex searching.
-
-Mon May 12 13:57:19 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): add NODE_OP_ASGN_{OR,AND}.  "defined?(a||=1)"
-	  should not operate assignment.  [ruby-dev:34645]
-
-Mon May 12 13:29:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (bigzero_p): check from MSB to LSB.  [ruby-dev:34649]
-
-Mon May 12 12:32:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RUBYOPT): affected BASERUBY too.  [ruby-talk:301514]
-
-Mon May 12 12:27:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (assign_heap_slot): fix condition for number of objects in
-	  a heap.
-
-Mon May 12 12:24:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_to_i): really removed.  [ruby-dev:34641]
-
-Mon May 12 11:15:55 2008  Yuki Sonoda (Yugui) <yugui@yugui.jp>
-
-	* gc.c (assign_heap_slot):  put the binary search routine in order.
-
-Mon May 12 10:52:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_gems), gem_prelude.rb: check if Gem is defined
-	  instead of Gem::Enable.
-
-	* gem_prelude.rb (load_full_rubygems_library, const_missing): prevent
-	  infinite recursion.  [ruby-dev:34539]
-
-Sun May 11 23:19:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (all_iter_i, any_iter_i): reduced duplicated code.
-
-Sun May 11 22:54:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/runner.rb (main): leave -I options for purelib.rb
-	  untouched.
-
-	* bootstraptest/runner.rb (main): handle relative path -r options.
-
-Sun May 11 19:04:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb: kill and join temporal threads that are
-	  created in each test.
-
-Sun May 11 17:58:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_process.rb (TestProcess#with_stdin): defined.
-	  (TestProcess#test_argv0_noarg): don't use redirect_fds.
-	  [ruby-dev:34647]
-
-Sun May 11 17:57:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MINIRUBY): should not include extension library path.
-
-Sun May 11 14:40:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (SIZET2NUM): new macro.
-	  (NUM2SIZET): new macro.
-
-	* gc.c (struct rb_objspace): use size_t for increment, length and
-	  used for 64bit.
-	  (allocate_heaps): ditto.
-	  (assign_heap_slot): ditto.
-	  (set_heaps_increment): ditto.
-	  (gc_mark_all): ditto.
-	  (is_pointer_to_heap): ditto.
-	  (free_unused_heaps): ditto.
-	  (gc_sweep): ditto.
-	  (os_obj_of): ditto.
-	  (rb_gc_call_finalizer_at_exit): ditto.
-	  (count_objects): ditto.
-
-Sun May 11 13:14:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (thread_cleanup_func_before_exec): extracted from
-	  thread_cleanup_func not to touch pthread data.
-	  pthread_cond_destroy in forked process may cause deadlock on
-	  Debian GNU/Linux Etch on x86, x86-64 and IA64.
-	  this doesn't cause resource leak because the process will exec soon.
-	  (terminate_atfork_before_exec_i): defined.
-	  (rb_thread_atfork_before_exec): defined.
-
-	* include/ruby/intern.h (rb_thread_atfork_before_exec): declared.
-
-	* process.c (rb_exec_atfork): call rb_thread_atfork_before_exec
-	  instead of rb_thread_atfork.
-
-	* io.c (popen_exec): call rb_thread_atfork_before_exec instead of
-	  rb_thread_atfork.
-
-Sat May 10 22:14:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): single '^' does not mean negation.
-	  [ruby-dev:34632]
-
-	* string.c (tr_trans): should check src size, not str size.
-	  [ruby-dev:34637]
-
-	* string.c (tr_trans): should not turn on modify flag if no
-	  modification happens.  [ruby-dev:34631]
-
-Sat May 10 18:11:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_line): zero length record separator should
-	  split a string into paragraphs.  [ruby-dev:34586]
-
-	* string.c (rb_str_each_line): RDoc updated.
-
-Sat May 10 11:36:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm.c (env_mark): mark env->block.self.  prevent SEGV when GC occur
-	  in prepare_iseq_build with gcc version 3.4.6 [FreeBSD] 20060305 on
-	  FreeBSD/amd64.
-
-Fri May  9 19:16:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (timeofday): use monotonic clock.  based on a patch
-	  from zimbatm <zimbatm at oree.ch> in [ruby-core:16627].
-
-Fri May  9 07:47:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* cont.c (cont_restore_0): dynamic stack direction code should be
-	  consistent with static one.  [ruby-talk:301152]
-
-Fri May  9 00:03:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): operator assignment "a += b rescue c" should be
-	  parsed as "a += (b rescue c)" just like normal assignment.
-	  [ruby-talk:301000]
-
-Thu May  8 18:14:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_and): bit-wise operation should not take float
-	  values.  [ruby-dev:34612]
-
-	* bignum.c (rb_big_or): ditto.
-
-	* bignum.c (rb_big_xor): ditto.
-
-Thu May  8 17:44:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, ext/extmk.rb, lib/mkmf.rb: use absolute path for RUBYOPT.
-
-	* file.c (rb_find_file_ext): guard load_path from GC.
-	  gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) optimizes
-	  load_path by holding only RARRAY_LEN(load_path) and
-	  RARRAY_PTR(load_path) in registers on IA64 GNU/Linux Etch.
-
-Thu May  8 16:41:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MINIRUBY), common.mk (RUBYOPT): add purelib.rb.
-	  [ruby-core:16642]
-
-Thu May  8 16:00:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): ! and ? at the bottom are no longer part
-	  of valid symbol names.  [ruby-dev:34590]
-
-Thu May  8 15:36:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (rb_gc_save_machine_context): call FLUSH_REGISTER_WINDOWS
-	  to mark the register stack from GC on another thread.
-
-Thu May  8 15:14:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): freeze temporary array.
-
-Thu May  8 13:19:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (rb_thread_mark): mark stat_insn_usage only when ptr is not
-	  null.
-
-Thu May  8 10:44:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (sort_reentered): reentered check may be called from
-	  Array#sort.
-
-Thu May  8 09:51:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (sort_1, sort_2): check for reentered and if elements are
-	  accessible.  [ruby-core:16679]
-
-Thu May  8 06:43:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_exe_r, dln_find_file_r): reentrant versions.
-
-	* file.c (rb_find_file_ext, rb_find_file), process.c (proc_exec_v),
-	  (rb_proc_exec, proc_spawn_v, proc_spawn), ruby.c (process_options):
-	  use reentrant versions.
-
-Thu May  8 06:27:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_key_p): thread local storage stores ID.
-
-Thu May  8 01:10:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): should squeeze properly.  [ruby-dev:34587]
-
-	* string.c (tr_trans): had a bug in treating multi-byte character
-	  replacement.
-
-	* string.c (rb_str_delete_bang): need not to do anything for empty
-	  strings.
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb::test_str_delete): add
-	  test for empty receiver.
-
-Wed May  7 20:19:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (process_options, ruby_set_argv): set encoding of rb_argv
-	  after Init_prelude() because cannot load encoding extensions before
-	  it.
-
-Wed May  7 20:00:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (bit_coerce): float should not be a valid operand of
-	  bitwise operations.  [ruby-dev:34583]
-
-Wed May  7 19:35:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_key_p): should always convert symbol to ID.
-	  [ruby-dev:34588]
-
-Wed May  7 19:30:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_divide): float division should floor() before
-	  rounding into integer.  [ruby-dev:34584]
-
-Wed May  7 18:02:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_to_i): remove obsolete method.  preparation for
-	  symbol GC.
-
-	* numeric.c (fix_to_sym): ditto.
-
-	* numeric.c (fix_id2name): ditto.
-
-Wed May  7 17:43:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_puts_ary): check recursion first.  [ruby-dev:34580]
-
-Wed May  7 17:41:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_eval_body): initialize retval.  [ruby-dev:34576]
-
-Wed May  7 13:02:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_fdiv): flo.fdiv(NaN) should result NaN.
-
-	* numeric.c (num_quo): renamed and moved from bignum.c.
-	  [ruby-dev:34582]
-
-	* bignum.c (rb_big_fdiv): update RDoc description
-
-	* rational.c (nurat_s_new_m): small refactoring.
-
-	* bignum.c (rb_big2dbl): no need for forceful warning when
-	  converting to float.  overflow is a nature of float values.
-
-Wed May  7 00:54:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzreader_gets): may cause infinite loop.
-	  a patch from Kouya <kouyataifu4 at gmail.com> in
-	  [ruby-reference-manual:762].
-
-Tue May  6 02:08:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/io/nonblock/test_flush.rb: don't set Thread.abort_on_exception.
-
-	* test/net/imap/test_imap.rb: ensure disconnecting imap to terminate
-	  receiver thread.
-
-Tue May  6 00:29:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* iseq.c (insn_operand_intern): should handle Qundef embedded in
-	  operand.  [ruby-core:16656]
-
-Tue May  6 00:00:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): should call compile_cpath() for
-	  modules as well.  [ruby-dev:34585]
-
-	* insns.def (defineclass): add undef handling.
-
-Mon May  5 23:49:40 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (defineclass): was using wrong variable.  [ruby-dev:34592]
-
-Mon May  5 20:07:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fflush): IO#flush problem within threads.  a patch from
-	  <s.wanabe at gmail.com> in [ruby-dev:34595].
-
-Mon May  5 19:58:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): protect some expression from
-	  segmentation fault.  a patch from wanabe <s.wanabe at gmail.com>
-	  in [ruby-dev:34593].
-
-Mon May  5 19:49:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_def): Struct.new(0) should not SEGV.
-	  based on the patch from wanabe <s.wanabe at gmail.com> in
-	  [ruby-dev:34594].
-
-	* struct.c (make_struct): call to_str on name object.
-
-Mon May  5 17:17:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (ruby_cleanup): wrap ruby_finalize_0 by SAVE_ROOT_JMPBUF to
-	  avoid SEGV by at_exit { Fiber.new{}.resume } on IA64.
-
-Mon May  5 12:12:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_slice_bang): should adjust length before making
-	  sub-array.
-
-Mon May  5 11:36:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_dup): should dupe corresponding information.
-	  [ruby-dev:34581]
-
-Mon May  5 11:13:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (compile_cpath): use Qundef to denote cbase lookup.
-
-	* insns.def (defineclass): Qundef is passed for cbase.
-
-	* insns.def (setconstant): ditto.
-
-	* vm_insnhelper.c (vm_check_if_namespace): use rb_inspect()
-	  instead of rb_obj_as_string() for better description.
-
-Mon May  5 02:10:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (set_heaps_increment): fix memory allocation strategy by
-	  determining heaps_inc from heaps_used, not objects_delta.
-	  (struct rb_objspace): delta removed.  change increment, length and
-	  used to long for LP64.
-	  (objects_delta): removed.
-	  (allocate_heaps): add next_heaps_length argument.
-	  (init_heap): renamed from add_heap.
-	  (garbage_collect): use heaps_increment in dont_gc.
-
-Sun May  4 21:09:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/getoptlong.rb: use $stderr instead of $deferr.
-
-Sun May  4 16:04:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (obj2nsec): fix string argument.
-
-Sun May  4 14:29:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_obj_respond_to): check the result of respond_to? method
-	  by RTEST.
-
-Sun May  4 12:57:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_each_line): return original string.
-
-Sat May  3 20:57:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (Test::Unit::Assertions#assert_normal_exit):
-	  new method.
-
-Sat May  3 18:10:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_timespec): raise TypeError for nil and other objects
-	  which has no divmod method.
-
-Fri May  2 23:59:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (internal_read_func, internal_write_func): split from
-	  internal_io_func.
-
-Fri May  2 23:55:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* variable.c (rb_define_hooked_variable): guard *var from GC to
-	  prevent collecting argf under RUBY_DEBUG=gc_stress.
-
-Fri May  2 17:29:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): call to_int if step is not a numeric
-	  value.  [ruby-dev:34575]
-
-Fri May  2 16:10:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): do not forcefully convert steps into
-	  integers.  [ruby-dev:34571]
-
-Fri May  2 14:52:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el: move fontifying code from hook.  a patch from
-	  Phil Hagelberg <phil at hagelb.org> in [ruby-core:16636].
-
-Fri May  2 14:10:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): step may be bignum.
-
-Fri May  2 13:52:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (Init_Regexp): remove MatchData#select.  [ruby-dev:34563]
-
-Thu May  1 23:59:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_divide), numeric.c (fix_divide): check for result
-	  domain.  [ruby-dev:34559]
-
-Thu May  1 23:57:06 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb:  This patch from Brian Candler adds a FailEOF mode which
-	  can be activated to have net/telnet raise EOFError exceptions when the
-	  remote connection is closed.  The default behavior remains unchanged though.
-
-Thu May  1 23:43:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_step): check if step can be converted to an integer.
-	  [ruby-dev:34558]
-
-	* range.c (range_step): allow float step bigger than zero but less
-	  than one.  [ruby-dev:34557]
-
-Thu May  1 23:20:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_divide): return an integer for idiv.
-	  [ruby-dev:34553]
-
-Thu May  1 20:47:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_s_create): should access converted hash value.
-	  [ruby-dev:34555]
-
-Thu May  1 20:31:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_parse.rb (TestParse::test_void_expr_stmts_value):
-	  shut up warning.
-
-	* rational.c (nurat_to_f): no need for forceful warning when
-	  converting to float.  overflow is a nature of float values.
-
-Thu May  1 16:10:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (env_delete_if): return enumerator if no block given.
-	  [ruby-dev:34554]
-
-Wed Apr 30 21:36:40 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb (url_encode): [ruby-dev:34497] ERB::Util#url_encode
-	  bug fix. Reported by rubikitch.
-
-	* test/erb/test_erb.rb: ditto
-
-Wed Apr 30 20:11:36 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb:  Fixing a bug where line endings would not be properly
-	  escaped when the two character ending was broken up into separate TCP
-	  packets.  Issue reported and patched by Brian Candler.
-
-Wed Apr 30 18:03:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_load_path), vm_core.h (rb_vm_t): moved to VM.
-
-	* load.c (rb_get_load_path): returns absolute load path.
-
-	* load.c (load_path_getter): $LOAD_PATH getter.
-
-	* file.c (rb_find_file_ext, rb_find_file), ruby.c (push_include,
-	  ruby_init_loadpath): use the accessor.
-
-	* vm.c (rb_vm_mark): mark load_path.
-
-Wed Apr 30 17:47:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_search): use local variable.  a patch from wanabe
-	  <s.wanabe AT gmail.com> in [ruby-dev:34537].  [ruby-dev:34492]
-
-Wed Apr 30 16:10:18 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval_intern.h: specify the values of the enumeration constants
-	  explicitly.  [ruby-dev:34489]
-
-Wed Apr 30 12:32:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (check_exec_redirect_fd): prohibit duplex IO.
-	  (check_exec_fds): record maxhint even if close_others is not
-	  specified.
-	  (rb_exec_arg_fixup): renamed from rb_exec_arg_fix.
-
-Mon Apr 28 20:24:27 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_marshal_load): checks the given
-	  denominator. [ruby-dev:34536]
-
-Mon Apr 28 14:21:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (POSFIXABLE): use FIXNUM_MAX+1 instead of
-	  FIXNUM_MAX to make it possible to convert to double accurately on
-	  environments with 64bit VALUE and 64bit double.
-	  It assumes FLT_RADIX is 2.
-	  fix RubyForge bug #14102.
-
-Mon Apr 28 12:48:57 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_exec_arg_addopt, rb_exec_arg_addopt): now can specify
-	  close_exec on having no fork environment (but still meaningless).
-
-Mon Apr 28 11:11:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (run_exec_options): don't call FIX2INT for nil.
-
-Mon Apr 28 11:11:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (method_name): should return symbols instead of strings.
-	  [ruby-dev:34531]
-
-Mon Apr 28 09:02:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_exec_arg_init): declared.
-	  (rb_exec_arg_addopt): declared.
-	  (rb_exec_arg_fix): declared.
-	  (rb_exec_initarg): removed.
-	  (rb_exec_getargs): removed.
-	  (rb_exec_initarg2): removed.
-
-	* io.c (struct popen_arg): make execarg as a pointer.
-	  (popen_exec): follow popen_arg change.
-	  (pipe_open): add eargp argument.  extract argc and argv from eargp.
-	  use rb_exec_arg_addopt to add redirect options.
-	  (pipe_open_v): set up struct rb_exec_arg.
-	  (pipe_open_s): set up struct rb_exec_arg.
-
-	* process.c (rb_exec_arg_addopt): new function extracted from
-	  check_exec_options_i.
-	  (check_exec_options_i): use rb_exec_arg_addopt.
-	  (rb_check_exec_options): opthash is always a hash now.
-	  (rb_exec_getargs): make it static.
-	  (rb_exec_fillarg): renamed from rb_exec_initarg2.  don't set up
-	  redirect_fds.
-	  (rb_exec_arg_init): new function.
-	  (rb_exec_arg_fix): new function.
-	  (rb_f_exec): use rb_exec_arg_init and rb_exec_arg_fix.  use
-	  rb_exec_arg_addopt to set close_others option.
-	  (run_exec_options): make close_others by default.
-	  (rb_spawn_internal): use rb_exec_arg_init and rb_exec_arg_fix.  use
-	  rb_exec_arg_addopt to set close_others option.
-
-Sun Apr 27 18:59:04 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_expt): use f_rational_new2. [ruby-dev:34524]
-
-Sun Apr 27 15:23:40 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (gc_count): add a GC.count method.  This method returns
-	  a GC invoking count.
-
-Sun Apr 27 12:20:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_t), gc.c (rb_objspace, rb_newobj), vm.c
-	  (Init_BareVM): per-VM object space support, which is disabled now.
-
-	* gc.c (rb_objspace_alloc), vm.c (Init_BareVM): should not use ruby
-	  malloc here.
-
-	* gc.c (garbage_collect, etc): performance improvement by passing the
-	  reference instead of referring the global variable in each functions.
-
-Sun Apr 27 08:06:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (ruby_set_argv): ARGV should be locale encoding.
-	  [ruby-list:44861]
-
-Sun Apr 27 01:46:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.popen3w): removed.
-	  (Open3.popen3): notice wait_thr.
-
-Sun Apr 27 01:13:05 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc, test/rdoc:  Update to RDoc 2.0.0 r56.
-
-Sat Apr 26 21:30:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_hash_dup): declared.
-
-	* hash.c (rb_hash_dup): new function.
-
-	* process.c (rb_spawn_internal): don't modify option hash.
-
-Sat Apr 26 18:36:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c, signal.c, thread.c, thread_win32.c, include/ruby/intern.h:
-	  suppress warnings.
-
-Sat Apr 26 17:42:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (builtin_types), gc.c (count_objects): added Complex and
-	  Rational.
-
-Sat Apr 26 17:35:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_eNOERROR): renamed.
-
-Sat Apr 26 17:30:11 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h, gc.c: remove T_BLOCK.
-
-	* include/ruby/ruby.h: re-number T_xxx.
-
-Sat Apr 26 17:31:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_cProcessTms, rb_cProcessStatus): renamed.
-
-	* error.c (builtin_types), signal.c (siglist), st.c (primes),
-	  struct.c (ref_func), time.c (months): constified.
-
-Sat Apr 26 13:00:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb: double fork is replaced by spawn with Process.detach.
-	  (Open3.popen3w): new method to access the thread returned by
-	  Process.detach.
-
-Sat Apr 26 00:47:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rb_spawn_internal): new function to specify
-	  default_close_others.
-	  (rb_spawn): specify default_close_others true.
-	  (rb_f_system): call rb_spawn_internal with default_close_others as
-	  false.
-
-Sat Apr 26 12:26:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_each): use INT2FIX() for fixnum values.
-
-Fri Apr 25 17:56:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (free_unused_heaps): preserve last used heap segment to
-	  reduce malloc() call.
-
-Fri Apr 25 17:54:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (HEAP_SIZE): use smaller heap segment (2K) for more chance
-	  to be freed.  based on patch from authorNari <authornari at gmail.com>.
-
-	* gc.c (rb_newobj_from_heap): eventually allocate heap segments.
-
-Fri Apr 25 15:35:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_spawn): rb_exec_initarg() returns new argc and argv in
-	  earg.
-
-Fri Apr 25 12:37:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (flatten): returns an instance of same class.
-	  [ruby-core:16554]
-
-Fri Apr 25 10:52:27 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: define mode_t for umask.
-
-	* process.c (check_exec_options_i, check_exec_fds, run_exec_options):
-	  support "close_others" only when fork(2) is available.
-
-Fri Apr 25 00:16:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c: include sys/stat.h for umask.
-
-Thu Apr 24 23:25:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_env_clear): declared.
-	  (rb_io_mode_modenum): declared.
-	  (rb_close_before_exec): declared.
-	  (struct rb_exec_arg): add options and redirect_fds field.
-	  (rb_check_argv): removed.
-	  (rb_exec_initarg): declared.
-	  (rb_exec_getargs): declared.
-	  (rb_exec_initarg2): declared.
-	  (rb_fork): add third argument: fds.
-
-	* io.c (max_file_descriptor): new static variable to record maximum
-	  file descriptor ruby used.
-	  (UPDATE_MAXFD): new macro.
-	  (UPDATE_MAXFD_PIPE): new macro.
-	  (rb_io_mode_modenum): externed.
-	  (rb_sysopen): update max_file_descriptor.
-	  (rb_close_before_exec): new function.
-	  (popen_exec): redirection removed because it is done by extended
-	  spawn mechanism.
-	  (pipe_open): generate a hash for spawn options to specify
-	  redirections.
-	  (pipe_open_v): use rb_exec_getargs.
-	  (pipe_open_s): use rb_exec_getargs.
-	  (rb_io_initialize): update max_file_descriptor.
-
-	* process.c (hide_obj): new function.
-	  (check_exec_redirect_fd): new function.
-	  (check_exec_redirect): new function.
-	  (check_exec_options_i): new function.
-	  (check_exec_fds): new function.
-	  (rb_check_exec_options): new function.
-	  (check_exec_env_i): new function.
-	  (rb_check_exec_env): new function.
-	  (rb_exec_getargs): new function.
-	  (rb_exec_initarg2): new function.
-	  (rb_exec_initarg): new function.
-	  (rb_f_exec): use rb_exec_initarg.
-	  (intcmp): new function.
-	  (run_exec_dup2): new function.
-	  (run_exec_close): new function.
-	  (run_exec_open): new function.
-	  (run_exec_pgroup): new function.
-	  (run_exec_rlimit): new function.
-	  (run_exec_options): new function.
-	  (rb_exec): call run_exec_options.
-	  (move_fds_to_avoid_crash): new function.
-	  (pipe_nocrash): new function.
-	  (rb_fork): use pipe_nocrash to avoid file descriptor conflicts.
-	  (rb_spawn): use rb_exec_initarg.
-	  (rlimit_resource_name2int): extracted from rlimit_resource_type.
-	  (rlimit_type_by_hname): new function.
-	  (rlimit_type_by_lname): new function.
-	  (rlimit_resource_type): use rlimit_type_by_hname.
-	  (proc_daemon): add fds argument for rb_fork.
-
-	* hash.c (rb_env_clear): renamed from env_clear and externed.
-
-	[ruby-dev:34086]
-
-Thu Apr 24 23:00:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb: fix typos.
-
-	* test/ruby/envutil.rb (rubyexec): move Open3.popen3 call into timeout
-	  block.
-
-Thu Apr 24 22:34:52 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_comparable.rb: new tests for Comparable, to achieve
-	  100% test coverage of compar.c.
-
-Thu Apr 24 17:19:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (process_options): set safe_level before loading script.
-	  [ruby-dev:34421]
-
-Thu Apr 24 14:15:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_1): prior files with extensions to files sans
-	  extensions.  [ruby-core:16517]
-
-Thu Apr 24 00:26:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/descriptions.rb: fixed wrong class nestings.
-
-Thu Apr 24 00:20:01 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb: add a test for set_trace_func.
-
-	* test/ruby/envutil.rb: move "rubyexec" method from test_rubyoptions.rb.
-
-	* test/ruby/test_rubyoptions.rb: use rubyexec in envutil.rb.
-
-	* test/ruby/test_thread.rb: add tests to achieve over 90% test coverage
-	  of thread.c.
-
-Wed Apr 23 15:28:52 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/gdbm/test_gdbm.rb (TestGDBM#test_s_open_no_create): failed
-	  notice moved from comment to assertion message. [ruby-dev:29127]
-
-Wed Apr 23 11:49:54 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#each, SortedSet#each, TC_Set#test_each): Return
-	  an enumerator if no block is given.
-
-Wed Apr 23 00:36:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/openssl/test_ssl.rb (start_server): add timeout to server.join.
-
-Wed Apr 23 00:18:45 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_symbol.rb (TestSymbol#test_to_proc): Improve
-	  tests of Symbol#to_proc.
-
-Tue Apr 22 22:40:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/drb/drb.rb (DRb::DRbServer::check_insecure_method): should
-	  check method names by symbols, not by strings.  a patch from
-	  Kazuhiro NISHIYAMA <zn at mbf.nifty.com> in [ruby-dev:34487].
-
-Tue Apr 22 22:15:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-{case,label}-indent): up list from
-	  indentation point.
-
-Tue Apr 22 21:09:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (score_table_A0, score_table_F0):
-	  type of content is unsigned char.
-
-	* ext/nkf/nkf-utf8/nkf.c (push_broken_buf): 'c' is nkf_char.
-
-	* ext/nkf/nkf-utf8/nkf.c (push_broken_buf): enc is 0 or pointer.
-
-	* ext/nkf//nkf.c (options): type of option is unsigned char.
-
-Tue Apr 22 20:51:58 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (z_conv): characters must be nkf_char.
-
-Tue Apr 22 19:23:05 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_initialize): Remove an undocumented
-	  feature (passing a block to the constructor) that's broken.
-	  This is not what I intended.
-
-Tue Apr 22 17:54:05 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm_core.h (exec_event_hooks): ``inline'' is a type modifier, not
-	  a type itself.
-
-Tue Apr 22 16:24:27 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): do not use C++ comments.
-
-Tue Apr 22 16:23:53 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* configure.in: use AC_USE_SYSTEM_EXTENSIONS.
-
-Tue Apr 22 16:23:16 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm_evalbody.c (DECL_SC_REG): use __asm__ instead.
-
-Tue Apr 22 16:18:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_evalbody.c (DECL_SC_REG): typo fixed.
-
-Tue Apr 22 15:25:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (struct timespec): needs time.h according to POSIX.
-
-Tue Apr 22 13:19:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_stop_timer_thread): should clear
-	  timer_thread_id after stopping it.
-
-Tue Apr 22 13:12:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_join): remove the current thread from the join list
-	  of the target thread.
-
-Tue Apr 22 12:03:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_get_ev_const): search from the base klass if it
-	  is given.
-
-Tue Apr 22 09:58:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c: avoid warnings.
-
-Tue Apr 22 09:56:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (eaccess): workaround for recent msvcrt's behavior.
-	  [ruby-core:16460]
-
-Mon Apr 21 19:08:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): call rb_io_check_readable and
-	  rb_io_check_writable.
-
-Mon Apr 21 17:45:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/dbm/dbm.c (fdbm_each_value, fdbm_each_key, fdbm_each_pair):
-	  GDBM#{each,each_pair,each_key,each_value}: Return an enumerator
-	  if no block is given.
-
-	* ext/gdbm/gdbm.c (fgdbm_each_value, fgdbm_each_key,
-	  fgdbm_each_pair): GDBM#{each,each_pair,each_key,each_value}:
-	  Return an enumerator if no block is given.
-
-	* ext/openssl/ossl_config.c (ossl_config_each):
-	  OpenSSL::Config#each: Return an enumerator if no block is given.
-
-	* ext/readline/readline.c (hist_each): Readline::HISTORY#each:
-	  Return an enumerator if no block is given.
-
-	* ext/sdbm/init.c (fsdbm_each_value, fsdbm_each_key,
-	  fsdbm_each_pair): SDBM#{each,each_pair,each_key,each_value}:
-	  Return an enumerator if no block is given.
-
-	* ext/stringio/stringio.c (strio_each_byte, strio_each):
-	  StringIO#{each,each_line,each_byte}: Return an enumerator if no
-	  block is given.
-
-	* ext/stringio/stringio.c (Init_stringio): Add #lines and #bytes,
-	  which are aliases to #each_line and #each_byte, respectively.
-
-	* ext/win32ole/win32ole.c (fole_each): WIN32OLE#each: Return an
-	  enumerator if no block is given.
-
-	* ext/zlib/zlib.c (rb_gzreader_each_byte, rb_gzreader_each):
-	  Zlib::GzipReader#{each,each_line,each_byte}: Return an
-	  enumerator if no block is given.
-
-	* ext/zlib/zlib.c (Init_zlib): Add Zlib::GzipReader#lines and
-	  #bytes, which are aliases to #each_line and #each_byte,
-	  respectively.
-
-Mon Apr 21 17:01:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (rb_iseq_compile_with_option): check if src is a string.
-	  [ruby-core:16453]
-
-Mon Apr 21 16:06:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_init): preserve the method name in ID.
-
-	* enumerator.c (enumerator_each): need not to call rb_to_id().
-
-	* enumerator.c (enumerator_with_index): ditto.
-
-Mon Apr 21 11:00:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): capture exception during defined?
-	  evaluation.  a patch from wanabe <s.wanabe at gmail.com> in
-	  [ruby-dev:34461].  [ruby-core:16010]
-
-Mon Apr 21 10:06:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c: should include <errno.h> to refer errno.
-
-Mon Apr 21 09:58:04 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (rb_strftime): check errno to detect strftime(3)'s error.
-	  this is workaround for recent version of MSVCRT.
-	  [ruby-dev:34456]
-
-Mon Apr 21 08:54:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (ruby_xmalloc): use size_t for malloc argument instead of long.
-
-Sun Apr 20 21:00:21 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c, include/ruby/ruby.h: Export rb_cEnumerator.
-
-Sun Apr 20 20:47:50 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c: Resolve the method every time an enumeration
-	  method is run, not once when the enumerator is initialized as it
-	  was before, so that method_missing() and method (re)definition
-	  afterwards are both in effect; pointed out in: [ruby-core:16441]
-
-Sun Apr 20 15:11:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_rbuf_to_dst): removed.
-	  (copy_stream_fallback_body): don't bypass write method.
-	  (copy_stream_body): simplified.
-
-Sun Apr 20 15:01:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct iseq_compile_data): moved label_no from
-	  new_label_body().
-
-	* compile.c (iseq_set_exception_table): allocates catch_table only
-	  when entries exist.
-
-	* compile.c (struct iseq_link_element, struct iseq_insn_data): made
-	  enum for debuggers.
-
-Sun Apr 20 14:44:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): fix for splat in when and rescue.
-	  a patch from wanabe <s.wanabe AT gmail.com> in [ruby-dev:34429].
-	  [ruby-core:14537]
-
-Sun Apr 20 13:55:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_fallback): write directly (bypassing write method)
-	  if possible.
-
-Sun Apr 20 12:49:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_fallback): read directly (bypassing readpartial
-	  method) if possible.
-
-Sun Apr 20 04:45:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): use readpartial and write method for
-	  non-IOs such as StringIO and ARGF.
-
-Fri Apr 18 20:57:33 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: add tests to achieve over 95% test coverage
-	  of array.c.
-
-Fri Apr 18 17:37:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_mark_locations): get rid of underflow.
-
-	* gc.c (mark_current_machine_context): check if the main thread stack
-	  position may shrink under the initialized position.  [ruby-core:16436]
-
-Thu Apr 17 22:20:52 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enc/trans/utf_16_32.c (fun_so_to_utf_16be, fun_so_to_utf_16le): add
-	  parentheses to remove warnings of gcc.
-
-	* io.c (rb_io_getc): remove unused variables.
-
-	* compile.c (NODE_NEXT, NODE_REDO): remove unused labels.
-
-	* ext/nkf/nkf.c (rb_nkf_convert): remove unused variables.
-
-	* ext/syck/rubyext.c (syck_resolver_initialize,
-	  syck_resolver_detect_implicit, syck_emitter_emit): remove unused
-	  variables.
-
-Thu Apr 17 20:12:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rubyoptions.rb (test_search): enable some assertions.
-
-	* test/ruby/test_rubyoptions.rb: flunk message in win32.
-
-Thu Apr 17 16:07:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_rubyoptions.rb (ruby): run in C locale.
-
-	* test/ruby/test_rubyoptions.rb (test_encoding): --encoding does not
-	  affect source code.
-
-Thu Apr 17 00:45:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb (test_rlimit_nofile): reset RLIMIT_NOFILE
-	  before exit (for gcov).
-
-	* test/ruby/test_rubyoptions.rb: new tests for option of ruby
-	  interpreter, to achieve over 95% test coverage of ruby.c.
-
-Wed Apr 16 02:40:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): preludes and parser need to run in safe
-	  level 0.  [ruby-dev:34407]
-
-Wed Apr 16 02:26:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): dln_find_file returns the pointer to a
-	  static buffer, so should copy it.  [ruby-dev:34409]
-
-Tue Apr 15 23:08:46 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/xmlrpc/client.rb: fix cookie handling. [ruby-dev:34403]
-
-	* test/xmlrpc/test_cookie.rb: add a test for the above fix.
-
-Tue Apr 15 19:20:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c: #undef rb_argv moved before #define.
-
-Tue Apr 15 18:02:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_argv): replaced with rb_get_argv().
-	  [ruby-Bugs-19514]
-
-Tue Apr 15 17:10:59 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/net/http.rb, lib/net/smtp.rb, lib/net/pop.rb: update
-	  URLs of Japanese documents.
-
-Tue Apr 15 16:45:14 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_symbol.rb (TestSymbol#test_to_proc): add tests.
-
-Tue Apr 15 15:38:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-encoding-map): added shift-jis for older
-	  versions.
-
-	* misc/ruby-mode.el (ruby-mode-set-encoding):
-	  coding-system-to-mime-charset is not a standard function.
-	  [carbon-emacs:795]
-	  fix for the case that magic comment exists but coding system is
-	  absent.
-
-	* misc/ruby-mode.el (ruby-mode): use write-contents-functions or
-	  write-contents-hooks for older versions.
-
-Tue Apr 15 07:21:21 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_div): [ruby-dev:34357]
-
-	* complex.c (nucomp_abs): use hypot.
-
-	* complex.c (nucomp_quo): do not force conversion.
-
-	* test/ruby/test_complex.rb: omitted some meaningless tests.
-
-Mon Apr 14 23:25:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_objectspace.rb: add a test for
-	  ObjectSpace.count_objects.
-
-Mon Apr 14 22:44:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (SET_EXTERNAL_ENCODING): avoid call rb_enc_check() on
-	  half-baked result string.
-
-	* re.c (rb_reg_search): make search reentrant.  [ruby-dev:34223]
-
-	* test/ruby/test_parse.rb (TestParse::test_global_variable):
-	  should preserve $& variable.
-
-Mon Apr 14 17:23:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (rb_hash_delete_if, rb_hash_reject_bang, env_delete_if,
-	  env_reject_bang): Return an enumerator if no block is given.
-
-Mon Apr 14 14:33:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c, compile.h (compile_debug): made runtime option.
-
-	* debug.c (ruby_debug_print_indent): returns if debug_level exceeds
-	  the threshold.
-
-	* debug.c (ruby_debug_printf): printf to stderr.
-
-	* iseq.c (make_compile_option, make_compile_option_value): added
-	  debug_level option.
-
-	* vm_core.h (rb_compile_option_t): added debug_level.
-
-	* vm_core.h (struct iseq_compile_data): added node_level.
-
-Mon Apr 14 12:52:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (Init_stack): use ruby_init_stack.  [ruby-dev:34350]
-
-	* gc.c (rb_objspace_t): packed globals.  [ruby-dev:34348]
-
-	* gc.c (finalizers): removed.  [ruby-dev:34349]
-
-Mon Apr 14 11:30:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_new): new integer overflow check condition.
-	  suggested by TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in
-	  [ruby-dev:34156].
-
-	* array.c (rb_ary_initialize): ditto.
-
-Mon Apr 14 00:51:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_parse.rb: add tests to achieve over 95% test coverage
-	  of parse.y.
-
-Sun Apr 13 23:53:58 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_cycle): Make Enumerable#cycle do a finite loop when
-	  the number of cycles is specified.
-
-	* array.c (rb_ary_cycle): Ditto for Array#cycle.
-
-Sun Apr 13 18:52:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (lock_func): should not check interrupts in
-	  blocking region.  [ruby-dev:34378]
-
-Sat Apr 12 12:41:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_exec_node, ruby_run_node), ruby.c (process_options):
-	  use iseq instead of NODE.
-
-	* gc.c (source_filenames): removed.
-
-	* include/ruby/intern.h, parse.y (yycompile, parser_mark, parser_free,
-	  ripper_initialize): rb_source_filename() is no longer used.
-
-	* compile.c, compile.h (ERROR_ARGS), parse.y (node_newnode, fixpos,
-	  parser_warn, e_option_supplied, warn_unless_e_option, range_op,
-	  cond0): nd_file is no longer used.
-
-Sat Apr 12 12:17:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* prelude.rb (require_relative): move require_relative from
-	  lib/require_relative.rb.  [ruby-core:16356]
-
-	* lib/require_relative.rb: removed.
-
-Sat Apr 12 05:55:57 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*, test/rubygems*:  Update to RubyGems 1.1.1 r1701.
-
-Sat Apr 12 03:13:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): set external encoding.
-
-	* file.c (rb_file_s_basename, rb_file_s_dirname, rb_file_s_extname):
-	  copy encoding.
-
-Fri Apr 11 17:35:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (count_i): modified to shut warning up.
-
-Fri Apr 11 17:25:09 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (count_i, count_iter_i, enum_count, enum_find_index):
-	  Reduce code.
-
-Fri Apr 11 17:06:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (find_index_i): modified to shut warning up.
-
-	* enum.c (find_index_iter_i): ditto.
-
-Fri Apr 11 16:44:43 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_find_index): Add support for find_index(obj);
-	  [ruby-dev:34313].
-
-	* array.c (rb_ary_index): Define find_index as an alias to index.
-
-Fri Apr 11 16:42:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/yaml/store.rb (YAML::load): modified to support empty
-	  database.
-
-Fri Apr 11 08:05:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): add volatile to avoid potential GC bug.  a
-	  patch from Tomoyuki Chikanaga <chikanag at nippon-control-system.co.jp>
-	  in [ruby-dev:34312].
-
-Thu Apr 10 23:08:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/pstore.rb (PStore::dump, PStore::load): allow subclass
-	  overriding.  [ruby-dev:34305]
-
-	* lib/yaml/store.rb (YAML::Store::marshal_dump_supports_canonical_option?):
-	  add a method to support faster PStore.
-
-Thu Apr 10 20:36:45 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* misc/rdebug.el, misc/README: Remove rdebug.el as per request
-	  from the maintainer and mention the ruby-debug project at
-	  RubyForge in README; bug#19043.
-
-Thu Apr 10 19:41:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* eval.c (rb_f_loop): Mention StopIteration in the document.
-
-Thu Apr 10 19:23:55 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_pop_m, rb_ary_shift_m): Update documents for
-	  #pop() and #shift().
-
-	* array.c (rb_ary_slice_bang): Update document.  Assigning
-	  array[*args]= nil no longer removes elements.
-
-Thu Apr 10 16:58:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (w_object): TYPE_USERDEF assigns id for ivars first.
-	  [ruby-dev:34159] by nagachika.
-
-Thu Apr 10 15:03:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/generator.rb: removed obsolete library.  [ruby-core:16233]
-
-	* test/test_generator.rb: removed as well.  [ruby-dev:34306]
-
-	* lib/pstore.rb: replaced by Hongli Lai's faster version.
-
-Thu Apr 10 10:27:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (native_sleep): sleep_cond is initialized at
-	  creation.  [ruby-Patches-19361].
-
-Wed Apr  9 14:43:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (lock_func): optimized and checks for interrupt_flag.
-	  based on a patch from Sylvain Joyeux in [ruby-Patches-19361] and
-	  [ruby-Patches-19362].
-
-Wed Apr  9 12:12:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_thread.rb: new tests from Sylvain Joyeux in
-	  [ruby-Patches-19361].
-
-Tue Apr  8 21:36:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_mutex_sleep): ensures to re-acquire at waking up.
-	  [ruby-Patches-19361]
-
-Tue Apr  8 11:00:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/complex.rb: remove Math first before overwriting by CMath.
-
-Tue Apr  8 10:34:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* load.c (rb_require_safe): should check fname path after $SAFE is
-	  properly set.  [ruby-dev:34268]
-
-	* re.c (rb_reg_quote): should always copy the quoting string.
-	  [ruby-core:16235]
-
-Tue Apr  8 10:30:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (prelude.c): depends on enc/prelude.rb.
-
-	* enc/prelude.rb: fixed initial library names.
-
-Tue Apr  8 03:39:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_provided): check expanded path for relative path
-	  features, loading or loaded features are already expanded in 1.9.
-
-	* variable.c (rb_autoload_load): no needs to check if provided before
-	  rb_require_safe.  [ruby-dev:34266]
-
-Mon Apr  7 22:41:21 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: cancelled recent changes (except to remove rdiv).
-
-	* bignum.c: ditto.
-
-	* bignum.c: added rb_big_idiv.
-
-Mon Apr  7 15:51:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_init_db): moved to enc/encdb.c.
-
-	* transcode.c (init_transcoder_table): moved to enc/trans/transdb.c.
-
-	* enc/depend (enc/encdb.o enc/trans/transdb.o): depend on
-	  corresponding headers.
-
-	* common.mk (COMMONOBJS): moved transcode.o from OBJS
-
-Mon Apr  7 12:26:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: add a known-bug.
-
-Mon Apr  7 12:15:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_each_func): should not leave a variable
-	  uninitialized, which could cause SEGV.
-
-	* range.c (range_step): removed duplicated and unreachable code.
-
-Mon Apr  7 02:12:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): need not to check if tainted.
-	  [ruby-dev:34219]
-
-Sun Apr  6 09:45:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_tell): check if closed.  [ruby-core:16223]
-
-Sat Apr  5 23:17:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb: new.
-
-	* lib/complex.rb: depends lib/cmath.rb.
-
-	* lib/rational.rb: added rdiv.
-
-	* complex.c: removed some math functions.
-
-Sat Apr  5 05:50:57 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_rb.rb: Fix uninitialized variable warnings.
-
-	* lib/rdoc/generator/html.rb: ditto.
-
-	* lib/rdoc/options.rb: Fix shadowed variable warning.
-
-	* lib/webrick/httprequest.rb: Fix redefined method warning.
-
-Sat Apr  5 02:13:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cmpint): moved from compar.c, to check bignum
-	  zero.
-
-Fri Apr  4 23:24:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_memsearch_qs): wrong boundary condition.
-
-	* re.c (rb_memsearch_qs_utf8): ditto.
-
-Fri Apr  4 14:11:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_memsearch_qs): wrong boundary condition.  a patch from
-	  wanabe <s.wanabe AT gmail.com> in [ruby-dev:34248].
-
-Fri Apr  4 05:57:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/pop.rb (Net::POP3::do_finish): clear @n_mails and
-	  @n_bytes as well.  [ruby-core:16144]
-
-Fri Apr  4 01:59:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): add step for each iteration if begin and
-	  end are numeric.  [ruby-core:15990]
-
-Fri Apr  4 00:42:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (Init_Bignum): rdiv method removed.  [ruby-dev:34242]
-
-	* complex.c (nucomp_quo): ditto.
-
-	* numeric.c (num_rdiv): ditto.
-
-	* rational.c (nurat_div): ditto.
-
-	* complex.c (nucomp_fdiv): fdiv implementation restored.
-
-	* numeric.c (num_quo): RDoc updated.
-
-Thu Apr  3 21:51:45 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_int_check): function for DRY real check.
-
-	* complex.c (nucomp_{add,sub,mul,div,expt}): use rb_num_coerce_bin().
-
-Thu Apr  3 19:59:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (defineclass): check if cbase is a class or a module.
-	  [ruby-core:16118]
-
-Thu Apr  3 14:42:11 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (INSNS): add insns_info.inc.
-
-	* common.mk (INSNS): make incs separately for nmake.
-
-Thu Apr  3 13:20:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (endb.h, transdb.h, prelude.c): depend on $(PREP) and
-	  check if really changed.  [ruby-core:16102]
-
-	* Makefile.in, common.mk, configure.in, {win32,bcc32}/Makefile.sub
-	  (MINIOBJS, ARCHMINIOBJS): separated.
-
-Thu Apr  3 09:00:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_set_sequence, iseq_insns_unification,
-	  insn_data_to_s_detail): constified.
-
-	* iseq.c (insn_operand_intern, ruby_iseq_disasm_insn): ditto.
-
-	* template/{insns_info,opt_sc,optunifs}.inc.tmpl: ditto.
-
-	* tool/instruction.rb (OptUnifsIncGenerator): ditto.
-
-Thu Apr  3 08:46:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_include): add RDoc to describe that comparison
-	  for numeric is done according magnitude of values.
-	  [ruby-core:15907]
-
-Wed Apr  2 22:29:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rational.c (nurat_int_check): function for DRY integer check.
-
-	* numeric.c (num_rdiv): should always return rational number.
-
-	* rational.c (nurat_add, nurat_sub, nurat_mul, nurat_fdiv,
-	  nurat_cmp): use rb_num_coerce_bin().
-
-	* rational.c (nurat_division): does / and rdiv.
-
-	* .gdbinit (rp): no longer use rb_p().
-
-Wed Apr  2 06:52:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* .gdbinit (rp): supports rational and complex numbers.  it's
-	  cheating since it uses rb_p().
-
-Wed Apr  2 06:24:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/node.h: add new constants for rb_call()'s scope.
-
-	* eval.c (iterate_method): use CALL_* scope constant to specify
-	  proper scope value.
-
-	* eval.c (rb_each, rb_apply, rb_funcall, rb_funcall2, rb_funcall3):
-	  ditto.
-
-Tue Apr  1 21:19:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rational.c: need to include <float.h> just once.
-
-Tue Apr  1 16:40:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big2dbl): more precise conversion at edge cases.
-	  [ruby-dev:34195]
-
-Tue Apr  1 14:43:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: get rid of empty expansion.
-
-	* configure.in: _setjmp is available but _longjmp is not on mingw.
-
-Tue Apr  1 09:41:22 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile (config.h): need to define RUBY_SETJMP, etc.
-
-Tue Apr  1 07:31:58 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems* test/rubygems*: Import RubyGems 1.1.0.
-
-Tue Apr  1 03:20:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_SETJMP, RUBY_LONGJMP, RUBY_JMP_BUF): prefers
-	  _setjmp over setjmp and sigsetjmp.  [ruby-core:16023]
-	  __builtin_setjmp cannot handle a variable.
-
-	* configure.in (--with-setjmp-type): new option to override the
-	  default rule in the above.
-
-	* eval_intern.h (ruby_setjmp, ruby_longjmp), gc.c (rb_setjmp),
-	  vm_core.h (rb_jmpbuf_t): use RUBY_SETJMP, RUBY_LONGJMP and
-	  RUBY_JMP_BUF.
-
-Tue Apr  1 01:55:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::Config.default_config_hash): requires
-	  win32/resolv to use Win32::Resolv.  [ruby-dev:34138]
-
-Tue Apr  1 01:40:58 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: adopted the ruby's style.
-
-	* rational.c: ditto.
-
-Tue Apr  1 00:17:35 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: revert.
-
-Mon Mar 31 18:57:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (config.h): define ssize_t.
-
-	* io.c (copy_stream_body): some platform don't have O_NOCTTY.
-
-Mon Mar 31 18:42:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check for ssize_t.  [ruby-dev:34184]
-
-Mon Mar 31 14:45:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_quo): should convert its operand to Rational.
-
-	* rational.c (string_to_r_strict): should raise TypeError.
-
-	* bignum.c (Init_Bignum): should not redefine Bignum#div.
-	  Numeric#div will do.  [ruby-dev:34066]
-
-Mon Mar 31 04:05:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_getc): set coderange while getting characters.
-
-Sun Mar 30 23:16:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (proc_dup): should copy is_lambda attribute as well.
-	  [ruby-talk:296244]
-
-Sun Mar 30 15:33:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: IO.copy_stream implemented.  [ruby-dev:33843]
-
-	* thread.c (rb_fd_select): new function.
-
-	* configure.in (sys/sendfile.h): check the header file.
-	  (sendfile): check the function.
-	  (pread): check the function.
-
-Sat Mar 29 14:18:41 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/*: full update Ruby/Tk to support Ruby(1.9|1.8) and Tc/Tk8.5.
-
-	* ext/tk/lib/tkextlib/tile.rb: [incompatible] remove TileWidgets'
-	  instate/state/identify method to avoid the conflict with standard
-	  widget options. Those methods are renamed to ttk_instate/ttk_state/
-	  ttk_identify (tile_instate/tile_state/tile_identify are available
-	  too). Although I don't recommend, if you really need old methods,
-	  please define "Tk::USE_OBSOLETE_TILE_STATE_METHOD = true" before
-	  "require 'tkextlib/tile'".
-
-	* ext/tk/lib/tkextlib/tile.rb: "Tk::Tile::__Import_Tile_Widgets__!"
-	  is obsolete. It outputs warning. To control default widget set,
-	  use "Tk.default_widget_set = :Ttk".
-
-	* ext/tk/lib/tk.rb: __IGNORE_UNKNOWN_CONFIGURE_OPTION__ method and
-	  __set_IGNORE_UNKNOWN_CONFIGURE_OPTION__!(mode) method are defined
-	  as module methods of TkConfigMethod. It may help users to wrap old
-	  Ruby/Tk scripts (use standard widgets) to force to use Ttk widgets.
-	  Ttk widgets don't have some options of standard widgets which are
-	  control the view of widgets. When set ignore-mode true, configure
-	  method tries to ignore such unknown options with no exception.
-	  Of course, it may raise other troubles on the GUI design.
-	  So, those are a little danger methods.
-
-	* ext/tk/lib/tk/itemconfig.rb: __IGNORE_UNKNOWN_CONFIGURE_OPTION__
-	  method and __set_IGNORE_UNKNOWN_CONFIGURE_OPTION__!(mode) method
-	  are defined as module methods of TkItemConfigMethod as the same
-	  purpose as TkConfigMethod's ones.
-
-	* ext/tk/sample/ttk_wrapper.rb: A new example. This is a tool for
-	  wrapping old Ruby/Tk scripts (which use standard widgets) to use
-	  Ttk (Tile) widgets as default.
-
-	* ext/tk/sample/tkextlib/tile/demo.rb: use ttk_instate/ttk_state
-	  method instead of instate/state method.
-
-	* ext/tk/lib/tk/root, ext/tk/lib/tk/namespace.rb,
-	  ext/tk/lib/tk/text.rb, ext/tk/lib/tkextlib/*: some 'instance_eval's
-	  are replaced to "instance_exec(self)".
-
-	* ext/tk/lib/tk/event.rb: bug fix on KEY_TBL and PROC_TBL (?x is not
-	  a character code on Ruby1.9).
-
-	* ext/tk/lib/tk/variable.rb: support new style of operation argument
-	  on Tcl/Tk's 'trace' command for variables.
-
-	* ext/tk/sample/demos-jp/widget, ext/tk/sample/demos-en/widget: bug fix
-
-	* ext/tk/sample/demos-jp/textpeer.rb,
-	  ext/tk/sample/demos-en/textpeer.rb: new widget demo.
-
-	* ext/tk/tcltklib.c: decrease SEGV troubles (probably)
-
-	* ext/tk/lib/tk.rb: remove Thread.critical access if Ruby1.9
-
-	* ext/tk/lib/tk/multi-tk.rb: support Ruby1.9 (probably)
-
-	* ext/tk/lib/tkextlib/tile.rb: add method to define Tcl/Tk command
-	  to make Tcl/Tk theme sources (based on different version of Tile
-	  extension) available.
-	  (Tk::Tile::__define_LoadImages_proc_for_compatibility__)
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/wm.rb: support dockable frames
-	  (Tcl/Tk8.5 feature). 'wm' command can treat many kinds of widgets
-	  as toplevel widgets.
-
-	* ext/tk/lib/tkextlib/tile/style.rb: ditto.
-	  (Tk::Tile::Style.__define_wrapper_proc_for_compatibility__)
-
-	* ext/tk/lib/tk/font.rb: add actual_hash and metrics_hash to get
-	  properties as a hash. metrics_hash method returns a boolean value
-	  for 'fixed' option. But metrics method returns numeric value
-	  (0 or 1) for 'fixed' option, because of backward compatibility.
-
-	* ext/tk/lib/tk/timer.rb: sometimes fail to set callback procedure.
-
-	* ext/tk/lib/tk.rb: add Tk.sleep and Tk.wakeup method. Tk.sleep
-	  doesn't block the eventloop. It will be better to use the method
-	  in event callbacks.
-
-	* ext/tk/sample/tksleep_sample.rb: sample script about Tk.sleep.
-
-Thu Mar 27 20:44:22 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (f_lcm): removed.
-
-	* rational.c (rb_lcm, rb_gcdlcm): added.
-
-	* lib/complex.rb (gcd, lcm, gcdlcm): removed.
-
-	* lib/rational.rb (gcd, lcm, gcdlcm): ditto.
-
-Wed Mar 26 18:11:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_constants): rdoc updated.  a patch from
-	  Florian Gilcher <flo AT andersground.net> in [ruby-core:16009].
-
-Wed Mar 26 00:55:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rand.rb: add tests to achieve over 95% test coverage
-	  of random.c.
-
-Wed Mar 26 00:28:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rational.rb: add tests to achieve over 90% test
-	  coverage of rational.c.
-
-	* test/ruby/test_complex.rb: ditto for complex.c.
-
-Tue Mar 25 19:34:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_knownbug.rb: add tests.  [ruby-dev:34128]
-
-Tue Mar 25 19:09:04 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (ary_new): fix size check.  [ruby-dev:34123]
-
-	* array.c (rb_ary_take, rb_ary_drop): check negative size and use
-	  NUM2LONG instead of FIX2LONG.  [ruby-dev:34123]
-
-	* enum.c (enum_take, enum_drop): check negative size.
-
-	* test/ruby/test_array.rb: add tests for above.
-
-Tue Mar 25 16:32:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): checks if the word is empty.
-
-	* ruby.c (process_options): typo fixed.  [ruby-dev:34122]
-
-Tue Mar 25 15:26:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (defined_expr): false short-circuit destination label may
-	  be needed.  [ruby-talk:295296]
-
-	* compile.c (iseq_compile_each): put nil if false short-circuit is
-	  created.
-
-	* compile.c (compile_massign_opt): no need to use alloca.
-
-Mon Mar 24 19:23:52 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* parse.y (debug_lines): Always prepare a new array for each
-	  file's SCRIPT_LINES__ storage, instead of appending source lines
-	  every time a file is re-loaded; submitted by Rocky Bernstein in
-	  #18517.
-
-Mon Mar 24 10:25:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: sitearch should use target_cpu.  [ruby-core:15986]
-
-Sun Mar 23 02:51:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rlimit_resource_value): use NUM2RLIM.
-
-Sun Mar 23 02:28:01 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: fixed. [ruby-dev:34109]
-
-	* rational.c: ditto.
-
-Fri Mar 21 21:32:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_f_gets, rb_f_readline, rb_f_readlines): delegates to ARGF
-	  as well as puts and putc.  [ruby-dev:34100]
-
-Fri Mar 21 21:26:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::Hosts): should not use win32/resolv on cygwin.
-	  [ruby-dev:29945], [ruby-dev:34095]
-
-	* lib/win32/registry.rb (Win32::Registry.expand_environ): try upcased
-	  name too for cygwin.  [ruby-dev:29945]
-
-	* lib/win32/resolv.rb (Win32::Resolv.get_hosts_path): use expand_path.
-
-Fri Mar 21 21:10:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb: Say that I am the current maintainer.
-
-	* lib/set.rb: Ditto.
-
-	* lib/shellwords.rb: Ditto.
-
-	* ext/syslog/syslog.txt: Ditto.
-
-Fri Mar 21 09:24:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (open_for_install): write block result and rewrite only
-	  if changed from existing file.
-
-Fri Mar 21 08:29:33 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_to_f): rearrangement.
-
-Fri Mar 21 06:44:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* rational.c (nurat_to_f): C99.
-
-Fri Mar 21 01:40:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* complex.c (nucomp_sub, nucomp_expt): call corresponding functions.
-
-Fri Mar 21 01:21:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* missing/tgamma.c: include config.h before math.h.  [ruby-dev:34075]
-
-Thu Mar 20 21:46:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_getline): use receiver.
-
-Thu Mar 20 21:20:19 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: some improvements (include Shin-ichiro HARA's
-	  effort).
-
-	* complex.c: some improvements.
-
-	* test/ruby/test_rational2.rb: new.
-
-Thu Mar 20 00:21:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_initialize_copy): get rid of segfault.
-
-	* io.c (argf_tell, argf_seek_m, argf_set_pos, argf_rewind,
-	  argf_fileno, argf_to_io, argf_eofl, argf_getc, argf_getbyte,
-	  argf_readchar, argf_readbyte, argf_each_line): use receiver.
-
-Wed Mar 19 23:52:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_putc, rb_io_puts): output directly if the receiver is
-	  rb_stdout to get rid of infinite recursion.  [ruby-dev:34059]
-
-Wed Mar 19 22:27:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: added rb_gcd.
-
-	* complex.c: use rb_gcd.
-
-Wed Mar 19 18:37:00 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: revert.
-
-	* rational.c: revert.
-
-Wed Mar 19 17:31:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_intern.h (TH_EXEC_TAG): need not to FLUSH_REGISTER_WINDOWS.
-	  [ruby-core:15871], [ruby-dev:34088]
-
-Wed Mar 19 14:53:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (nucomp_to_s, nucomp_inspect): get rid of making
-	  unnecessary intermediate objects.
-
-	* complex.c (make_patterns, string_to_c): do not treat successive
-	  underscores as a part of numeric like as literals.  [ruby-dev:34085]
-
-	* rational.c (make_patterns, string_to_r): ditto.
-
-Wed Mar 19 14:36:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): treat successive underscores as
-	  nondigit.  [ruby-dev:34089]
-
-Wed Mar 19 14:08:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_check_encoding): should not load autoloaded encoding
-	  directly, instead use rb_enc_find_index() which deal with alias and
-	  replica.  [ruby-core:15957]
-
-Wed Mar 19 11:49:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regint.h (include): include ruby.h instead of defines.h and config.h.
-
-Wed Mar 19 10:17:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regint.h (CHECK_INTERRUPT_IN_MATCH_AT): add interrupt check
-	  during match.  [ruby-talk:295002]
-
-Tue Mar 18 16:24:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (literal_concat_gen): bail out at different encoding.
-
-Tue Mar 18 04:00:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_memsearch_ss): simple shift search.
-
-	* re.c (rb_memsearch_qs): quick search.
-
-	* re.c (rb_memsearch_qs_utf8): quick search for UTF-8 string.
-
-	* re.c (rb_memsearch_qs_utf8_hash): hash functions for above.
-
-	* re.c (rb_memsearch): use above functions.
-
-	* string.c (rb_str_index): give enc to rb_memsearch.
-
-	* include/ruby/intern.h (rb_memsearch): move to encoding.h.
-
-	* include/ruby/encoding.h (rb_memsearch): move from intern.h.
-
-	* common.mk (PREP): add dependency.
-
-Mon Mar 17 22:23:54 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_take, rb_ary_take_while, rb_ary_drop,
-	  rb_ary_drop_while): new methods. [ruby-dev:34067]
-
-	* test/ruby/test_array.rb: add tests for above.
-
-Mon Mar 17 17:11:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode): should use `run-mode-hooks' instead
-	  of calling `run-hooks' directly to run the mode hook.  patch from
-	  Chiyuan Zhang <pluskid AT gmail.com> in [ruby-core:15915]
-
-Mon Mar 17 16:41:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: unset GREP_OPTIONS.  [ruby-core:15918]
-
-Sun Mar 16 18:07:07 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/utf_16_32.c: bug fix (some invalid UTF-8 sequences
-	  were legal)
-
-	* test/ruby/test_transcode.rb: test for above bug
-
-Sun Mar 16 17:28:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (LIBRUBY_SO): add dependency to $(BUILTIN_ENCOBJS).
-
-Sun Mar 16 08:51:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* include/ruby/intern.h: added some declarations.
-
-	* include/ruby/ruby.h: ditto.
-
-	* common.mk: added some entries.
-
-	* configure.in: added a check for signbit.
-
-	* lib/complex.rb: nearly all of core definitions have been removed.
-
-	* lib/rational.rb: ditto.
-
-	* lib/mathn.rb: some trivial adjustments.
-
-	* complex.c: new.
-
-	* rational.c: ditto.
-
-	* numeric.c (flo_{quo,rdiv}, fix_fdiv): added.
-
-	* numeric.c ({num,int}_{numerator,denominator}): ditto.
-
-	* bignum.c (rb_big_fdiv): ditto.
-
-	* numeric.c (fix_{quo,pow}): now may yield rational number.
-
-	* bignum.c (rb_big_{quo,pow}): ditto.
-
-	* numeric.c (rb_{int,flo}_induced_from): now can accept rational.
-
-	* gc.c (gc_mark_children, obj_free): now detects complex and rational.
-
-	* inits.c (rb_call_inits): now calls Init_{Complex,Rational}.
-
-	* test/ruby/test_complex.rb: new.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Sat Mar 15 17:48:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index): pass unnecessary enc_capable().
-
-	* string.c (rb_str_cmp): reduce invocation of rb_enc_compatible().
-
-Fri Mar 14 17:04:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (inttypes.h): includes always if available.
-
-	* string.c, ext/digest/defs.h: moved inttypes.h to ruby.h.
-
-Fri Mar 14 16:59:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_LIB_PREFIX): fix for prefix.
-
-Fri Mar 14 16:35:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie::initialize): performance patch from
-	  Makoto Kuwata <kwa@kuwata-lab.com> in [ruby-dev:34048].
-
-Fri Mar 14 15:49:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_LIB_PREFIX): use libdir.
-
-Fri Mar 14 14:24:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/defs.h: inttypes.h is still needed.
-
-Fri Mar 14 11:34:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub: follow below changes.
-
-Fri Mar 14 11:24:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-encoding-map, ruby-use-encoding-map): added
-	  to customize.
-
-Fri Mar 14 10:37:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in (int8_t, uint8_t,  int16_t,  uint16_t int32_t,
-	  uint32_t int64_t, uint64_t, int128_t, uint128_t,
-	  intptr_t, uintptr_t): check if defined.
-
-	* win32/Makefile.sub: follow configure.in.
-
-	* ext/digest/defs.h: remove checks for uint8_t, uint32_t and uint64_t.
-
-Fri Mar 14 10:12:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_VARTYPE): should not indent preprocessor
-	  directives.
-
-Fri Mar 14 10:03:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (UNALIGNED_WORD_ACCESS): IA64 cannot access unaligned word.
-
-Thu Mar 13 21:00:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_slice_bang): should not use rb_ary_subseq()
-	  which shares internal pointer.  splice modifies the receiver
-	  right after subseq.  [ruby-dev:34005]
-
-	* bootstraptest/test_struct.rb: some test moved from test to shut
-	  warning up.
-
-Thu Mar 13 19:42:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (config.h): define uint32_t.
-
-Thu Mar 13 14:14:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* trunk/configure.in (AC_CHECK_HEADERS): stdint.h is not needed to
-	  check.
-
-	* trunk/configure.in (rb_cv_type_uint32_t): unquoted.  [ruby-dev:34030]
-
-	* trunk/string.c (hash): use inttypes.h instead of stdint.h.
-
-Thu Mar 13 10:42:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_divmod): should return integer division.  [ruby-dev:34006]
-
-	* enum.c (zip_ary): wrong boundary condition.
-
-	* test/ruby/test_numeric.rb (TestNumeric::test_num2long): bit-and
-	  should not raise RangeError.
-
-Thu Mar 13 03:12:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/cmd/help.rb: should be updated for new ri structure.
-	  [ruby-core:15825]
-
-	* lib/rdoc/ri/driver.rb (RDoc::initialize): allow options to be optional.
-
-	* lib/rdoc/ri/driver.rb (RDoc::class_cache): map_dirs may be
-	  empty.
-
-	* lib/rdoc/ri/driver.rb (RDoc::get_info_for): revive get_info_for
-	  method.  maybe broken.
-
-	* lib/rdoc/ri/util.rb (RDoc::initialize): should not use RiError
-	  no more.
-
-Thu Mar 13 01:45:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (stdint.h): check if presence.
-
-	* configure.in (uint32_t): check if defined.
-
-	* string.c (hash): fix for portability.  [ruby-dev:34020]
-
-Wed Mar 12 17:33:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): fix for a mere underscore.
-
-Wed Mar 12 14:47:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (rb_thread_raised_set): use generic flags.
-
-	* eval.c (rb_longjmp): clear all raised flags.
-
-	* eval.c (stack_check): leave clearing flag to rb_longjmp.
-
-	* gc.c (rb_memerror): use thread raised flag instead of static flag.
-
-Tue Mar 11 23:38:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_combination): argument check before creating
-	  Enumerator.
-
-	* array.c (rb_ary_permutation): ditto.
-
-	* enum.c (enum_zip): optimize if all arguments are arrays.
-
-Tue Mar 11 19:48:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_coerce): try conversion before type check.
-	  [ruby-core:15838]
-
-Tue Mar 11 12:39:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clean-local): WINMAINOBJ is Windows specific.
-
-Tue Mar 11 10:19:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (hash): replaced by MurmurHash described in
-	  <http://murmurhash.googlepages.com/>.
-
-Tue Mar 11 09:52:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): empty strings in any encoding are
-	  compatible each other.
-
-Tue Mar 11 00:46:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (usage): remove some unimportant lines to fit -h message
-	  in a page.  [ruby-dev:34018]
-
-Mon Mar 10 17:11:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_local_variables): local_variables should return an
-	  array of symbols.  [ruby-dev:34008]
-
-	* vm.c (collect_local_variables_in_env): ditto.
-
-Mon Mar 10 15:53:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.c (MKSTR): make US-ASCII.  [ruby-dev:34010]
-
-Mon Mar 10 02:08:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_index): if t == s + pos, the character beginning
-	  from s + pos is valid.
-
-Sun Mar  9 13:51:21 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/generator.rb: Restore missing line to #params.  Patch by
-	  Lincoln Stoll <lstoll at lstoll.net>
-
-Sun Mar  9 09:52:00 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/code_objects.rb: Remove debugging Kernel#p.  Patch by
-	  Lincoln Stoll <lstoll at lstoll.net>
-	* lib/rdoc/generator/html.rb: Fully qualify AllReferences.  Patch by
-	  Lincoln Stoll <lstoll at lstoll.net>
-	* lib/rdoc/ri/writer.rb: Fix 1.8 backwards compatibility.
-
-Sat Mar  8 18:50:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (isdirsep): backslash is valid path separator on cygwin too.
-
-Sat Mar  8 06:53:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (search_nonascii): Use VALUE instead of unsigned long
-	  because VALUE can be the fastest unsigned integer type.
-	  On LLP64 unsigned long isn't the fastest.
-	* string.c (str_strlen): ditto.
-	* string.c (str_utf8_nth): ditto.
-	* string.c (count_utf8_lead_bytes_with_ulong): ditto.
-
-	* string.c (count_utf8_lead_bytes_with_word): renamed.
-
-Fri Mar  7 21:27:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c: fix indent.
-
-Fri Mar  7 21:12:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (power_cache_init, power_cache_get_power0, Init_Bignum):
-	  delayed initializing power cache per base.  [ruby-dev:34003]
-
-Fri Mar  7 20:30:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_restore_0): fixed typo.  [ruby-core:15821]
-
-Fri Mar  7 19:56:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: rdoc added.  [ruby-Patches-9762]
-
-Thu Mar  6 17:26:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): space flag is in effect for Inf/NaN too.
-	  [ruby-dev:34002]
-
-Thu Mar  6 15:44:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): casting double to long is undefined
-	  if the integer part of double is out of the range of long.
-
-Thu Mar  6 15:11:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): ignore 0 flag for NaN and Inf.
-	  [ruby-dev:33994]
-
-Thu Mar  6 15:05:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub (RUNRUBY): use $(PROGRAM) instead of
-	  ruby$(EXEEXT).
-	  suggested by KIMURA Koichi <kimura.koichi at canon.co.jp>.
-	  [ruby-dev:34000]
-
-Thu Mar  6 14:46:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/lgamma_r.c (loggamma): return 0 for 1 and 2.
-
-	* test/ruby/test_math.rb: accept errors by functions under missing/.
-
-Thu Mar  6 14:29:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode_bang): set coderange.
-
-	* transcode.c (rb_str_transcode): use rb_str_transcode_bang.
-
-Thu Mar  6 14:00:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/missing.h (cbrt): add declaration.
-
-Thu Mar  6 11:14:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-add-log-current-method): use ruby style
-	  method name format.
-
-Thu Mar  6 11:12:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): no need of loop.
-
-Thu Mar  6 08:30:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_freeze): call rb_class_name() directly.
-	  [ruby-core:15802]
-
-Thu Mar  6 04:32:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (count_utf8_lead_bytes_with_ulong): fix shift size.
-	  [ruby-dev:33993]
-
-	* string.c (str_utf8_nth) fix wrong counting.
-
-Thu Mar  6 00:34:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): size_t returned from strlen() can be
-	  unsigned.
-
-Thu Mar  6 00:31:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (make_struct): preserve encoding of struct name.
-
-Wed Mar  5 22:49:20 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (is_utf8_lead_byte, count_utf8_lead_bytes_with_ulong):
-	  defined for UTF-8 optimization.
-
-	* string.c (str_strlen): use is_utf8_lead_byte and
-	  count_utf8_lead_bytes_with_ulong.
-
-	* string.c (str_utf8_nth) ditto.
-
-Wed Mar  5 17:53:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_flock): returns false on EAGAIN if non-blocking.
-	  [ruby-core:15795]
-
-Wed Mar  5 17:43:43 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (transcode_loop): Adjusted detection of invalid
-	  (ill-formed) UTF-8 sequences. Fixing potential security issue, see
-	  http://www.unicode.org/versions/Unicode5.1.0/#Notable_Changes.
-
-	* test/ruby/test_transcode.rb: Added two tests for above fix.
-
-Wed Mar  5 14:00:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_to_s): avoid rb_scan_args() when no argument
-	  given.
-	* bignum.c (rb_big_to_s): ditto.
-	* enum.c (enum_first): ditto.
-	* eval_jump.c (rb_f_catch): ditto.
-	* io.c (rb_obj_display): ditto.
-	* class.c (rb_obj_singleton_methods): ditto.
-	* object.c (rb_class_initialize): ditto.
-	* random.c (rb_f_srand): ditto.
-	* range.c (range_step): ditto.
-	* re.c (rb_reg_s_last_match): ditto.
-	* string.c (rb_str_to_i): ditto.
-	* string.c (rb_str_each_line): ditto.
-	* string.c (rb_str_chomp_bang): ditto.
-	* string.c (rb_str_sum): ditto.
-
-	* string.c (str_modifiable): declare inline.
-	* string.c (str_independent): ditto.
-
-Wed Mar  5 11:50:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/debug.rb: require 'continuation' to implement "restart"
-	  command.  [ruby-dev:33992]
-
-	* lib/debug.rb (Context::debug_command): remove local variable
-	  shadowing to shut up warnings.  [ruby-dev:33992]
-
-	* lib/debug.rb (Context::display_list): ditto.
-
-	* lib/debug.rb (Context::resume): ditto.
-
-	* lib/debug.rb (Context::get_thread): no longer use #index for Hash.
-
-Tue Mar  4 21:35:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb::eval_input): SyntaxError should not be
-	  considered as IRB bug.  [ruby-dev:33991]
-
-	* lib/irb/workspace.rb (IRB::WorkSpace::filter_backtrace): should
-	  filter 'irb.rb' as well for context mode 2 and 3.
-
-Tue Mar  4 19:10:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_aset): should not copy key string when
-	  compare_by_identity is set.  [ruby-dev:33604]
-
-	* hash.c (hash_equal): two hash tables are different when internal
-	  comparison table differ.  [ruby-dev:33989]
-
-Tue Mar  4 16:29:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): disallow non digits '0o' expression.
-
-Tue Mar  4 14:35:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (open_key_args): use rb_io_open_with_args instead of rb_f_open.
-	  [ruby-core:15763]
-
-Tue Mar  4 13:41:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (add_heap): fix previous change.  [ruby-dev:33988]
-
-Tue Mar  4 10:21:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (add_heap): use binary search to find the place to insert the
-	  new heap slot.  [ruby-dev:33983]
-
-Tue Mar  4 05:30:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (open_key_args): use rb_io_open instead of rb_f_open.
-	  [ruby-core:15746]
-
-Mon Mar  3 23:28:37 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/filehandler.rb: should normalize path
-	  separators in path_info to prevent directory traversal
-	  attacks on DOSISH platforms.
-	  reported by Digital Security Research Group [DSECRG-08-026].
-
-	* lib/webrick/httpservlet/filehandler.rb: pathnames which have
-	  not to be published should be checked case-insensitively.
-
-Mon Mar  3 17:25:45 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (add_heap): sort heaps array in ascending order to use
-	  binary search.
-
-	* gc.c (is_pointer_to_heap): use binary search to identify object
-	  in heaps.  works better when number of heap segments grow big.
-
-Mon Mar  3 17:15:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): remove too strict encoding check.
-	  [ruby-dev:33966]
-
-Mon Mar  3 16:14:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_any_hash): shrinks all results in Fixnum range.
-	  [ruby-core:15713]
-
-Sun Mar  2 23:03:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_ungetc): reduce redundant call.
-
-Sun Mar  2 10:13:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): parse shebang in us-ascii.  a patch from
-	  sheepman <sheepman AT sheepman.sakura.ne.jp> in [ruby-dev:33955]
-
-Sun Mar  2 00:08:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): check for successive underscores.
-	  [ruby-dev:33952]
-
-Sat Mar  1 17:59:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (struct argf): packed ARGF stuffs.
-
-	* ruby.c (proc_options): use ruby_set_inplace_mode().
-
-Sat Mar  1 17:51:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (recursive_collect): do not always
-	  include all test_*.rb.
-
-Sat Mar  1 14:14:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* development snapshot 1.9.0-1 released.
-
-Sat Mar  1 13:46:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/make-snapshot: make prereq uses MINIRUBY.
-
-	* tool/make-snapshot: allow packaging like 1.9.0-1 by second
-	  command-line argument.
-
-Sat Mar  1 13:11:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/allpairs.rb: new file for all pairs method.
-
-	* test/ruby/test_m17n_comb.rb: use allpairs.rb to reduce test cases.
-
-	* test/ruby/test_sprintf_comb.rb: ditto.
-
-Sat Mar  1 12:34:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_inspect): use rb_str_inspect() instead of
-	  rb_str_dump().  [ruby-dev:33946]
-
-Sat Mar  1 12:15:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.c (rb_get_method_body): ent->method may be freed by
-	  GC.  [ruby-dev:31819]
-
-	* thread.c (remove_event_hook): should not access freed memory.
-	  [ruby-dev:31820]
-
-Sat Mar  1 10:31:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (read_all, rb_io_getline_fast): encoding is io_input_encoding.
-
-Sat Mar  1 10:09:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_setup_table, rb_str_split_m, rb_str_chomp_bang):
-	  simplified with rb_enc_ascget().  [ruby-dev:33944]
-
-Sat Mar  1 10:01:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_coderange_scan_restartable): should not return
-	  offset in the middle of a character.
-
-	* string.c (rb_str_coderange_scan_restartable): should not return
-	  invalid cr value.
-
-Sat Mar  1 09:36:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): "%#.0o" should keep prefix where
-	  "%#.0x" should not.
-
-Sat Mar  1 02:35:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big2str_find_n1): check integer overflow.
-
-Sat Mar  1 00:29:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_dummy_p): bootstrap encodings can not be dummy.
-
-	* encoding.c (rb_enc_ascget): no needs to call rb_enc_precise_mbclen()
-	  twice.
-
-Fri Feb 29 23:14:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb::test_str_chomp): test
-	  updated.
-
-Fri Feb 29 20:58:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (TestIterator::test_enumerator):
-	  adjust test for zip behavior reversion.
-
-Fri Feb 29 20:25:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): now works on UTF-16.
-
-	* string.c (tr_setup_table): negation should work on non ASCII
-	  compatible strings as well.
-
-	* string.c (rb_str_split_m): awk split should work on non ASCII
-	  compatible strings as well.
-
-Fri Feb 29 18:08:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_strftime): format should be ascii compatible.
-
-	* parse.y (rb_intern3): non ASCII compatible symbols.
-
-	* re.c (rb_reg_regsub): add encoding check.
-
-	* string.c (rb_str_chomp_bang): ditto.
-
-	* test/ruby/test_utf16.rb (TestUTF16::test_chomp): raises exception.
-
-Fri Feb 29 15:16:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_rpartition): calculation was done in byte indexing.
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb::test_str_start_with):
-	  allow start_with? matching on broken strings.
-
-Fri Feb 29 15:12:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (opt_block_param): command can start just after block param
-	  definition.  [ruby-list:44479]
-
-Fri Feb 29 03:22:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_time.rb (test_readers): fix typo.
-	  (test_strftime): "UTC" is also ok for time.gmtime.strftime("%Z").
-
-Fri Feb 29 02:50:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_new): remove encoding assumption of empty string.
-
-	* hash.c ( rb_f_getenv, env_fetch, env_inspect): result of ENV should
-	  be always ASCII-8BIT.
-
-	* object.c (nil_to_s): nil.to_s should be US-ASCII.
-
-Fri Feb 29 02:24:22 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: forgot to update RELEASE_DATE
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/text.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb: remove adhoc check
-	  of Ruby's features (use existence of some classes instead of
-	  comparing with RUBY_VERSION)
-
-	* ext/tk/lib/tk/root.rb, ext/tk/lib/tk/autoload.rb: make TkRoot
-	  (Tk::Root) unswitchable
-
-	* ext/tk/lib/multi-tk.rb: partial bug fix (still not work!!)
-
-Thu Feb 28 23:37:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI::Meta#meta_setup_encoding): use ASCII-8BIT
-	  for charset unspecified non-text data.
-
-Thu Feb 28 22:19:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_capable): IMMEDIATE_P doesn't include Qnil and Qfalse.
-	  use SPECIAL_CONST_P.
-
-Thu Feb 28 19:45:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_find): check type of argument and convert to String
-	  if it is StringValue. [ruby-cvs:22866]
-
-Thu Feb 28 18:07:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI::Meta#meta_setup_encoding): setup encoding
-	  by charset.
-	  (OpenURI::Meta#meta_add_field): call meta_setup_encoding when
-	  content-type.
-
-Thu Feb 28 15:29:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast): scan coderange.
-
-Thu Feb 28 14:36:46 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_str_copy): removed.
-
-Thu Feb 28 13:51:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (stack_check): made flag per threads.
-
-	* thread.c (rb_thread_set_raised, rb_thread_reset_raised): prefixed.
-
-Thu Feb 28 11:43:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_flock): immediately returns on EAGAIN if
-	  non-blocking.  [ruby-core:15672]
-
-Thu Feb 28 11:23:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline_1): get rid of segfault.  [ruby-dev:33938]
-
-Thu Feb 28 11:19:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_reverse_bang): removed unused variables.
-
-	* include/ruby/encoding.h (rb_str_coderange_scan_restartable): added
-	  prototype.
-
-	* string.c (rb_str_coderange_scan_restartable, rb_str_times): removed
-	  unused variables.
-
-	* string.c (rb_str_reverse_bang): ditto
-
-	* string.c (rb_enc_str_copy): unused now.  may be used in future?
-
-Thu Feb 28 03:03:32 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/*: make default widget set
-	  switchable between Tk (standard Tcl/Tk widget set) and
-	  Ttk (Tile). Initial default widget set is Tk. Now, toplevel
-	  widget classes are removed and defined as aliases.
-	  For example, "TkButton" is an alias of the "Tk::Button" class.
-	  Those aliases are replaced when switching default widget set.
-	  "Tk.default_widget_set=" is the method for switching default
-	  widget set. "Tk.default_widget_set = :Ttk" defines Ttk (Tile)
-	  widget set as default. It means that "TkButton" denotes
-	  "Tk::Tile::Button" class. And then, "TkButton.new" creates
-	  a Tk::Tile::Button widget. Of course, you can back to use
-	  standard Tk widgets as the default widget set by calling
-	  "Tk.default_widget_set = :Tk", whenever you want. Based on
-	  the feature, you can use Ttk widget styling engine on your
-	  old Ruby/Tk application without modifying its source, if you
-	  don't use widget options unsupported on Ttk widgets (At first,
-	  call "Tk.default_widget_set = :Ttk", and next load and run
-	  your application).
-	  This is one step for supporting Tcl/Tk8.5 features.
-
-Wed Feb 27 22:55:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_coderange_scan_restartable): coderange scanning
-	  for partial read.
-
-	* io.c (read_all): set coderange when not convert encoding.
-
-Wed Feb 27 03:55:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb, enc/make_encmake.rb: load current mkmf.rb even if
-	  cross-compiling.
-
-	* ext/extmk.rb, enc/make_encmake.rb, lib/mkmf.rb: need to be 1.8
-	  compatible for cross-compiling.
-
-Tue Feb 26 16:53:13 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-calculate-indent): should distinguish
-	  comment and # in strings.  [ruby-dev:33874]
-
-Tue Feb 26 16:41:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (combi_len, rb_ary_product): check for overflow.
-	  [ruby-Bugs-18355]
-
-Tue Feb 26 16:38:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (recursive_cmp): compare minimal length parts.
-
-Tue Feb 26 16:06:00 2008  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_{ec,dh,dsa,rsa}.c: Remove useless warnings.
-
-	* ext/openssl/ossl_asn1.c: Simplify code.
-
-	* ext/openssl/ossl_ssl_session.c Fix compiler warnings.
-	  Undefine #id if SSL_SESSION_get_id is not supported.
-
-Tue Feb 26 15:50:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (value_expr_gen): removed inappropriate warning.
-	  [ruby-core:15660]
-
-Tue Feb 26 15:43:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (tokadd_escape): refactored.  [ruby-core:15657]
-
-Tue Feb 26 15:30:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_eql, rb_ary_cmp): get rid of stack overflow with
-	  self-recursive constructs.  [ruby-Bugs-18356]
-
-Tue Feb 26 01:16:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (ROBJECT_NUMIV): renamed from ROBJECT_LEN.
-	  (ROBJECT_IVPTR): renamed from ROBJECT_PTR.
-
-	* variable.c: follow the above renaming.
-
-	* object.c: ditto.
-
-	* gc.c: ditto.
-
-	* marshal.c: ditto.
-
-Mon Feb 25 17:30:29 2008  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/digest.c ext/openssl/lib/openssl/digest.rb:
-	  Commit patch #9280 from Akinori MUSHA.
-	  Simplify the OpenSSL::Digest class and make use of the
-	  existing Digest framework.
-	  Enhance performance.
-
-Mon Feb 25 15:33:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (big2str_karatsuba): initialize cache if not initialized.
-
-	* bignum.c (Init_Bignum): delayed initializing cache.
-	  [ruby-dev:33930]
-
-Mon Feb 25 13:40:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (Init_process): share bignum objects for RLIM_INFINITY,
-	  RLIM_SAVED_MAX and RLIM_SAVED_CUR if they are equal.
-
-Mon Feb 25 10:41:41 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* encoding.c (Encoding#dummy): minor grammatical fixes
-	  in rdoc documentation.
-
-Mon Feb 25 00:01:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (clean-local): should be double-colon.
-
-Sun Feb 24 23:39:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, {bcc,win}32/Makefile.sub (clean-local): remove
-	  intermediate files.
-
-	* cygwin/GNUmakefile.in (clean-local): remove def file.
-
-Sun Feb 24 06:49:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c (ruby_set_debug_option): separated ruby_each_words().
-
-	* util.c (ruby_each_words): extracted from ruby_set_debug_option().
-
-	* ruby.c (enable_option, disable_option): allow all for all known
-	  features.
-
-	* ruby.c (proc_options): generalized enable/disable options.
-
-	* ruby.c (ruby_init_gems): take enabled flag.  [ruby-core:14840]
-
-	* ruby.c (process_options): added --disable-rubyopt flag.
-
-	* include/ruby/util.h (ruby_each_words): prototype.
-
-Sun Feb 24 05:25:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): check if argument for -E exists.
-
-Sun Feb 24 05:09:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-label-indent): fix for labels inside
-	  blocks in switch.
-
-Sun Feb 24 03:52:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (valid_filename): use O_EXCL to get rid of clobbering
-	  existing files in race conditions.
-
-Sat Feb 23 21:36:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (ole_init_cp): should return value.
-
-Sat Feb 23 20:16:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_sublen): removed.
-
-	* string.c (rb_str_reverse, rb_str_reverse_bang): use
-	  single_byte_optimizable.
-
-Sat Feb 23 19:25:18 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_copy_for_substr): renamed from
-	  rb_enc_cr_str_copy.
-
-	* string.c: use rb_enc_cr_str_copy_for_substr and keep coderange.
-
-Sat Feb 23 18:50:17 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_encoding2cp): remove US-ASCII
-	  mapping.
-
-Sat Feb 23 01:09:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rlimit_resource_type): new function.
-	  (rlimit_resource_value): new function.
-	  (proc_getrlimit): use rlimit_resource_type to accept
-	  symbol and string as resource type.
-	  (proc_setrlimit): use rlimit_resource_type and rlimit_resource_value
-	  to accept symbol and string as resource type and values.
-
-Fri Feb 22 21:12:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_copy): check string's coderange is 7bit or
-	  valid.
-
-Fri Feb 22 19:50:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (BIGZEROP): fix for longer Bignum zeros.  [ruby-Bugs-17454]
-
-Fri Feb 22 15:47:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_mbclen): return minlen instead of 1 when
-	  a character is not found properly.
-
-	* string.c (rb_enc_strlen): round up string length with fixed
-	  multibyte encoding such as UTF-32.
-	  (rb_enc_strlen_cr): ditto.
-	  (rb_str_substr): fix substring with fixed multibyte encoding.
-	  (rb_str_justify): check number of characters.
-
-Fri Feb 22 12:11:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): string of ascii incompatible encoding
-	  should be escaped and returned as US-ASCII encoding.
-
-Fri Feb 22 11:16:55 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_substr): copy encoding although empty string.
-
-Fri Feb 22 04:48:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_times): empty string's coderange is CODERANGE_7BIT.
-
-	* string.c (rb_str_substr): ditto.
-
-	* encoding.c (rb_enc_compatible): empty string is compatible with not
-	  only nonasciicompatible strings. [ruby-dev:33895]
-
-Thu Feb 21 17:15:15 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: Added basic support for passing options to String#encode
-	  via a hash. Currently only one option, with one value, is supported:
-	  invalid: :ignore (dropping invalid byte sequences instead of
-	  producing an error). Option naming is not yet stable!
-
-	* test/ruby/test_transcode.rb: Added a single test for invalid: :ignore
-	  option. Not more tests because most data does not yet distinguish
-	  between INVALID and UNKNOWN.
-
-Thu Feb 21 16:35:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_unshift_m): expands enough for argc.  [ruby-dev:33880]
-
-Thu Feb 21 14:49:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_set_encoding): uses current_file after check if next
-	  input is available.
-
-Thu Feb 21 14:13:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_putc): invoke stdout method so that redefining putc
-	  may take effect.   [ruby-talk:291844]
-
-	* io.c (rb_f_puts): ditto.
-
-Thu Feb 21 11:10:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c: replace rb_enc_copy by rb_enc_cr_str_copy or
-	  rb_enc_cr_str_exact_copy.
-
-Thu Feb 21 10:35:04 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_asciicompat): dummy encoding is not
-	  ascii compatible. [ruby-dev:33878]
-
-Thu Feb 21 00:01:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RPATHFLAG): -R option of HP-UX ld is not for runtime
-	  load path.  [ruby-list:44600]
-
-Wed Feb 20 23:55:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_map_errno): exported.
-
-Wed Feb 20 23:28:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/readline/extconf.rb (rl_event_hook): workaround for native
-	  windows.
-
-Wed Feb 20 19:42:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index): doesn't clear coderange
-	  when new encoding equals to old one.
-
-Wed Feb 20 19:15:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_str_copy): added for wrapper for rb_enc_copy.
-	  this also copy coderange when ptr and len is equal.
-
-	* string.c (rb_enc_cr_str_copy): added for wrapper for rb_enc_copy.
-	  this always copy coderange.
-
-	* string.c (str_replace_shared): use rb_enc_str_copy.
-
-	* string.c (str_new3): don't rb_enc_copy because encoding is copied
-	  at str_replace_shared.
-
-Wed Feb 20 13:08:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (parse_args): added --dir-mode, --script-mode and
-	  --cmd-type options.  [ruby-dev:33816]
-
-	* instruby.rb (parse_args): added bin-arch and bin-comm to install
-	  type, for compiled files and script files.
-
-	* instruby.rb (parse_args): deal with make style command line macros,
-	  and count as long style options if prefixed with INSTALL_.
-
-	* instruby.rb (makedirs): use $dir_mode.  [ruby-dev:33805]
-
-	* instruby.rb (open_for_install): set file mode, which is now
-	  permission mode instead of access mode.
-
-	* instruby.rb (bin-comm): installs scripts with replacing shebang
-	  lines.
-
-Wed Feb 20 10:04:22 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (open_key_args): set arg->io even if no options passed.
-	  [ruby-dev:33072]
-
-Tue Feb 19 21:11:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_strlen_cr): get length with coderange scan.
-
-	* string.c (str_strlen): use rb_enc_strlen_cr. [ruby-dev:33849]
-
-Tue Feb 19 20:49:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_raise_jump): moved adjustment for control frame.
-
-Tue Feb 19 18:34:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (STACK_LENGTH) [SPARC] : 0x80 offset removed.  [ruby-dev:33857]
-
-Tue Feb 19 14:27:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_event): prevent polling.  based on
-	  a patch from error errorsson in [ruby-Bugs-17675].
-
-Tue Feb 19 11:14:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_exec_node): no thread starts inside iseq compilation.
-
-	* eval.c (rb_f_raise): skip current control frame.  [ruby-core:15589]
-
-	* insns.def (opt_div): raise as the ordinary method. [ruby-core:15589]
-
-Mon Feb 18 15:16:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_each_line): fix newline size.
-
-Mon Feb 18 13:06:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/irb/locale.rb (IRB::Locale#lc2kconv): check ja_JP.EUC-JP as well.
-
-Mon Feb 18 11:51:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (re_warn): defined to restore warnings for /[a-c-e]/, etc.
-
-Mon Feb 18 10:17:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/lib/expect.rb (IO#expect): check if peer is closed.
-	  [ruby-Bugs-17940]
-
-Mon Feb 18 00:33:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_regsub): don't repeat repl twice with
-	  "X".sub!(/./, sprintf("\\%c", 255)).
-
-Sun Feb 17 23:06:55 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/cgi.rb (CGI::escapeHTML): use gsub with Hash. [ruby-dev:33828]
-
-Sun Feb 17 21:38:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENC_CODERANGE_AND): fix broken case. [ruby-dev:33826]
-
-	* string.c (rb_str_times): fix broken case. [ruby-dev:33826]
-
-Sun Feb 17 20:45:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): add enable_warning parameter.
-	  (rb_reg_adjust_startpos): disable warning by rb_reg_prepare_re.
-	  (rb_reg_search): follow rb_reg_prepare_re parameter change.
-
-Sun Feb 17 20:12:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests to achieve over 90% test
-	  coverage of re.c.
-
-Sun Feb 17 15:25:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENC_CODERANGE_AND): added.
-
-	* string.c (rb_str_plus, rb_str_times): keep coderange.
-
-	* parse.y (STR_NEW0) use rb_usascii_str_new.
-
-Sun Feb 17 14:07:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_strlen): rb_enc_strlen doesn't fail.
-
-Sun Feb 17 13:03:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_sublen): use rb_enc_strlen.
-
-Sun Feb 17 12:17:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/{euc_jp.c,gbk.c,iso_8859_1.c,iso_8859_11.c,iso_8859_13.c,
-	  iso_8859_2.c,iso_8859_6.c,iso_8859_7.c,iso_8859_8.c,iso_8859_9.c,
-	  shift_jis.c,windows_1251.c}: add document about encodings.
-
-	* enc/cp949.c: divided into new file.
-
-Sun Feb 17 10:59:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_quote): return US-ASCII string consistently.
-
-Sun Feb 17 09:17:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_times): reduce loop overhead.
-
-Sun Feb 17 03:37:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/re.h (struct rmatch_offset): new struct for character
-	  offsets.
-	  (struct rmatch): new struct.
-	  (struct RMatch): reference struct rmatch.
-	  (RMATCH_REGS): new macro.
-
-	* re.c (match_alloc): initialize struct rmatch.
-	  (pair_byte_cmp): new function.
-	  (update_char_offset): update character offsets.
-	  (match_init_copy): copy regexp and character offsets.
-	  (match_sublen): removed.
-	  (match_offset): use update_char_offset.
-	  (match_begin): ditto.
-	  (match_end): ditto.
-	  (rb_reg_search): make character offset updated flag false.
-	  (match_size): use RMATCH_REGS.
-	  (match_backref_number): ditto.
-	  (rb_reg_nth_defined): ditto.
-	  (rb_reg_nth_match): ditto.
-	  (rb_reg_match_pre): ditto.
-	  (rb_reg_match_post): ditto.
-	  (rb_reg_match_last): ditto.
-	  (match_array): ditto.
-	  (match_aref): ditto.
-	  (match_values_at): ditto.
-	  (match_inspect): ditto.
-
-	* string.c (rb_str_subpat_set): use RMATCH_REGS.
-	  (rb_str_sub_bang): ditto.
-	  (str_gsub): ditto.
-	  (rb_str_split_m): ditto.
-	  (scan_once): ditto.
-
-	* gc.c (obj_free): free character offsets.
-
-Sun Feb 17 03:13:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/resource.rb: made version infos confirm to OS spec.
-
-	* {bcc32,win32}/Makefile.sub (*.rc): add dependency.
-
-Sat Feb 16 20:49:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_substr): optimized for UTF-8.
-
-Sat Feb 16 18:13:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_compatible): check encoding incapable arguments.
-
-Sat Feb 16 20:12:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (match_inspect): avoid SEGV with MatchData.allocate.inspect.
-
-Sat Feb 16 19:04:17 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_strlen): revert r15507. [ruby-dev:33810]
-
-Sat Feb 16 18:25:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_strlen): little more optimization.
-	  (rb_enc_nth): remove needless variable 'c'.
-
-Sat Feb 16 18:00:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_compatible): empty strings are always compatible.
-
-	* string.c (rb_enc_cr_str_buf_cat): ditto.
-
-Sat Feb 16 16:14:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_strlen): UTF-8 character count moved to str_strlen.
-	  (str_strlen): UTF-8 character count is only applicable for valid
-	  UTF-8 string.  [ruby-dev:33807]
-
-Sat Feb 16 13:16:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_sub_bang): stringize replacing hash values.
-	  (str_gsub): ditto.
-
-Sat Feb 16 13:01:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_strlen): add search_nonascii like character
-	  counter for UTF-8.
-
-Sat Feb 16 11:53:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_strlen): moved to string.c.
-
-	* string.c (rb_enc_strlen): use search_nonascii.
-	  (str_strlen): don't use search_nonascii.
-
-Sat Feb 16 11:45:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/require_relative.rb: check require_relative call in eval.
-
-Sat Feb 16 08:00:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (process_options): set default_external before loading
-	  libraries. [ruby-dev:33801]
-
-Sat Feb 16 05:49:54 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/iso_8859_{4,13}.c: Windows-1257 is replica of ISO-8859-13.
-
-	* string.c (single_byte_optimizable): rb_enc_mbminlen must be 1
-	  when rb_enc_mbmaxlen is 1.
-
-Sat Feb 16 03:43:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_nth): moved to string.c.
-
-	* string.c (rb_enc_nth): moved from string.c.  use search_nonascii
-	  for ASCII compatible string.
-	  (str_nth): wrong optimization removed to fix
-	  "a".force_encoding("EUC-JP").slice!(0,10) returns
-	  "a\x00\x00\x00\x00\x00\x00\x00\x00\x00"
-
-Sat Feb 16 00:21:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (rb_range_beg_len): check if responds to "begin" and "end"
-	  methods for non-Range object.
-
-Fri Feb 15 20:29:42 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_init_cp): initialize WIN32OLE.codepage
-	  according to Encoding.default_external.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Fri Feb 15 19:31:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/node.h (NODE_FL_NEWLINE): renamed from NODE_NEWLINE
-	  to denote its a flag.  [ruby-core:15529]
-
-Fri Feb 15 18:23:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_sub_bang, str_gsub): allows hash for replacement.
-
-Fri Feb 15 17:12:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_strlen): use search_nonascii() for performance.
-
-	* string.c (str_nth): ditto.
-
-Fri Feb 15 16:22:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): allow specifying both :mode and :encoding.
-
-Fri Feb 15 15:34:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_getbyte): new method.
-	  (rb_str_setbyte): new method.
-
-Fri Feb 15 15:29:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/require_relative.rb: new file.
-
-Fri Feb 15 15:23:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_convert): check upper bound.  a patch from
-	  Daniel Luz at [ruby-Bugs-17910].
-
-Fri Feb 15 10:35:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_quote): set US-ASCII for ASCII-only string.
-	  [ruby-dev:33785]
-
-Fri Feb 15 10:27:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {win,bcc}32/Makefile.sub (config.h): added HAVE_FTRUNCATE.
-	  [ruby-dev:33786]
-
-Fri Feb 15 09:44:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_compile_gen): reg_fragment_setenc might not raise an
-	  exception before rb_reg_compile.
-
-Fri Feb 15 07:37:40 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/paths.rb: Preserve compatibility with 1.8.
-
-Fri Feb 15 02:42:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ftruncate): check if available.
-
-	* file.c (rb_file_truncate): check if ftruncate instead of truncate.
-
-Fri Feb 15 02:40:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (sigsetmask): check when signal semantics is not POSIX.
-
-	* signal.c (USE_TRAP_MASK): set true if sigprocmask or sigsetmask is
-	  available.
-
-Thu Feb 14 23:56:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.c (error_print): append a newline to rest lines.
-
-	* parse.y (reg_compile_gen): appends error message from
-	  rb_reg_compile() to one from reg_fragment_setenc().
-
-Thu Feb 14 21:00:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_reopen): check STDIN, STDOUT and STDERR mode according to
-	  stdio streams.
-
-Thu Feb 14 16:07:40 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_math.rb: actual-expected argument ordering for
-	  test_math.rb fixed.  a patch from Tadashi Saito
-	  <shiba AT mail2.accsnet.ne.jp> in [ruby-dev:33770].
-
-Thu Feb 14 16:02:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_utime): inhibits with secure level 2 or higher.
-
-Thu Feb 14 12:30:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_preprocess_dregexp): use non-preprocessed regexp source
-	  for result.
-
-Thu Feb 14 01:43:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/timeout.rb (Timeout::timeout): made sensitive to location on the
-	  stack.  [ruby-core:15458]
-
-Thu Feb 14 00:49:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (INSTRUBY_ARGS): pass mode to install.  [ruby-dev:33766]
-
-	* instruby.rb (parse_args): added --data-mode and --prog-mode options.
-
-Thu Feb 14 00:02:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (eval): allow to eval in a binding that has a singleton method.
-	  [ruby-dev:33763]
-
-	* test/ruby/test_proc.rb: add tests to achieve over 70% test coverage
-	  of proc.c.
-
-	* test/ruby/test_method.rb: ditto.
-
-Wed Feb 13 22:46:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#sub_ext): new method.  [ruby-list:44608]
-
-Wed Feb 13 21:50:32 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (proc_curry): new method. [ruby-dev:33676]
-
-	* test/ruby/test_proc.rb: add tests for above.
-
-Wed Feb 13 20:48:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (RObject): add iv_index_tbl for shortcut of
-	  RCLASS_IV_INDEX_TBL(rb_obj_class(obj)).
-	  (ROBJECT_IV_INDEX_TBL): defined.
-
-	* object.c (init_copy): initialize iv_index_tbl in struct RObject.
-
-	* variable.c (ivar_get): use ROBJECT_IV_INDEX_TBL.
-	  (rb_ivar_defined): ditto.
-	  (obj_ivar_each): ditto.
-	  (rb_obj_remove_instance_variable): ditto.
-	  (rb_ivar_set): update iv_index_tbl in struct RObject.
-
-Wed Feb 13 16:21:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/generic.rb: revert r15442. 2nd argument of String#sub parse
-	  escapes. [ruby-dev:33726]
-
-	* bootstraptest/test_method.rb, enc/depend, instruby.rb, lib/mkmf.rb,
-	  mkconfig.rb: revert r15443. ditto.
-
-Wed Feb 13 11:20:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: fix typo.
-
-	* lib/mkmf.rb: revert r15443. "\\1#{sep}\\2" is wrong if sep is ended
-	  with "\\".
-
-Wed Feb 13 08:57:21 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup/inline.rb:  Allow inline markup to have a leading
-	  '#' or '\', or trailing punctuation.  i.e. *#freeze?*, *\foo?*.
-
-Wed Feb 13 07:21:23 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/to_html_hyperlink.rb:  Moved linking to to_html.rb, move
-	  crossref to to_html_crossref.rb
-
-Wed Feb 13 04:15:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (arg_concat_gen, arg_append_gen): optimize for array push.
-
-	* parse.y (arg_concat_gen): optimize for array concat.
-
-	* parse.y (arg_add_gen): removed since identical to arg_append_gen.
-
-Tue Feb 12 21:04:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (exc_list): should use mrhs if non array.
-
-Tue Feb 12 20:32:50 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/rational.rb (floor, ceil, truncate, round): do not use
-	  definitions of Numeric.
-
-	* lib/rational.rb (to_i): should returns truncated self.
-
-	* lib/complex.rb (numerator): requires
-	  Integer#{numerator,denominator}.
-
-	* lib/complex.rb (quo): do not use definition of Numeric.
-
-	* lib/complex.rb (>, >=, <, <=, between?, div, divmod, modulo,
-	  floor, ceil, truncate, round): undef'ed.
-
-	* lib/mathn.rb (Rational#inspect): removed.
-
-Tue Feb 12 16:48:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (args, mrhs): flattens literal array splats.
-
-	* parse.y (exc_list): splat literal array.
-
-Tue Feb 12 15:27:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* bootstraptest/runner.rb, bootstraptest/test_method.rb, enc/depend,
-	  instruby.rb, lib/mkmf.rb, lib/test/unit/util/procwrapper.rb,
-	  mkconfig.rb, sample/test.rb, template/vm.inc.tmpl,
-	  test/ruby/test_stringchar.rb: fixes around String#gsub.
-
-
-Tue Feb 12 15:11:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb,
-	  ext/json/lib/json/pure/parser.rb, ext/openssl/lib/openssl/x509.rb,
-	  ext/win32ole/sample/olegen.rb, lib/date/format.rb, lib/irb/context.rb,
-	  lib/irb/workspace.rb, lib/net/http.rb, lib/net/imap.rb,
-	  lib/rdoc/generator.rb, lib/rdoc/markup/to_html.rb,
-	  lib/rdoc/markup/to_latex.rb, lib/rdoc/parsers/parse_c.rb,
-	  lib/rdoc/ri/formatter.rb, lib/rexml/parsers/baseparser.rb,
-	  lib/rexml/quickpath.rb, lib/rexml/text.rb, lib/rss/parser.rb,
-	  lib/uri/common.rb, lib/uri/generic.rb, lib/webrick/httpresponse.rb,
-	  lib/webrick/httpservlet/filehandler.rb, lib/yaml/baseemitter.rb,
-	  lib/yaml/encoding.rb: performance tuning around String#gsub.
-
-Tue Feb 12 12:16:45 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_hash_cmp): lighter version of rb_str_cmp() for
-	  hash comparison function.
-
-	* hash.c (rb_any_cmp): use rb_str_hash_cmp().
-
-	* string.c (rb_str_casecmp): should return nil for incompatible
-	  comparison.
-
-Tue Feb 12 12:13:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* instruby.rb: specify file mode to install.  a patch from
-	  pegacorn  <subscriber.jp AT gmail.com> in [ruby-dev:33699].
-
-Tue Feb 12 11:38:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (rb_num_coerce_bin): add ID argument to specify
-	  caller's method name.  [ruby-dev:33663]
-
-	* numeric.c (rb_num_coerce_cmp): ditto.
-
-	* numeric.c (rb_num_coerce_relop): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (DoSomeOne): add function name argument.
-
-Tue Feb 12 10:25:02 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/rdoc.rb:  Wrap parse_files' read in version check for
-	  backwards compatibility.
-
-Tue Feb 12 10:15:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (load_file): enc must effect source encoding.
-	  [ruby-core:15496]
-
-Tue Feb 12 10:16:47 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/paths.rb:  Restore require rubygems check.
-
-Tue Feb 12 02:42:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_include): specialize single character string
-	  case (e.g. (?a ..?z).include(?x)) for performance.
-	  [ruby-core:15481]
-
-	* string.c (rb_str_upto): specialize single character case.
-
-	* string.c (rb_str_hash): omit coderange scan for performance.
-
-	* object.c (rb_check_to_integer): check Fixnum first.
-
-	* object.c (rb_to_integer): ditto.
-
-	* string.c (rb_str_equal): inline memcmp to avoid unnecessary
-	  rb_str_comparable().
-
-	* parse.y (rb_intern2): use US-ASCII encoding.
-
-	* parse.y (rb_intern_str): ditto.
-
-Mon Feb 11 17:21:18 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION), test/rss/test_version.rb:
-	  0.2.3 -> 0.2.4.
-
-	* lib/rss/maker.rb, lib/rss/maker/, test/rss/test_maker_2.0.rb:
-	  fixed a bug that RSS::Maker.make("0.9")'s item doesn't make some
-	  elements if description is missed.
-	  Reported by Michael Auzenne. Thanks!!!
-
-	* lib/rss/maker/0.9.rb, test/rss/test_maker_0.9.rb:
-	  RSS::Maker.make("0.9") generates RSS 0.92 not RSS 0.91.
-
-Mon Feb 11 10:43:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (load_file): the encoding of DATA follows the source
-	  file encoding. [ruby-dev:33693]
-
-Mon Feb 11 06:50:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_pack.rb: fix tests for 64bit CPU.
-
-	* test/ruby/test_bignum.rb: ditto.
-
-	* test/ruby/test_file_exhaustive.rb: ditto.
-
-	* test/ruby/test_integer.rb: ditto.
-
-	* test/ruby/test_time.rb: ditto.
-
-	* test/ruby/test_numeric.rb: ditto.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-Mon Feb 11 00:18:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/benchmark.rb (Job::Benchmark#item): fix typo.
-
-Sun Feb 10 21:58:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (encdb, transdb): depend on $(PREP).
-
-Sun Feb 10 16:58:20 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*, test/rubygems*, gem_prelude.rb: Import RubyGems
-	  r1601.  [ruby-core:15381]
-
-Sun Feb 10 15:07:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc32,win32,wince}/Makefile.sub (MISSING): added cbrt.obj.
-
-Sun Feb 10 12:58:33 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/code_objects.rb: Make some attributes accessible for reuse.
-	* lib/rdoc/generator/html.rb: Pull out ContextUser classes and related
-	  methods for reuse.
-	* lib/rdoc/generator.rb: Move ContextUser classes to
-	  RDoc::Generator::Context for reuse.
-	* lib/rdoc/rdoc.rb: Make RDoc::RDoc initialization a little easier.
-	* lib/rdoc/options.rb: Make RDoc::Options easier to use without
-	  parsing an ARGV.
-	* lib/rdoc/markup/to_*.rb: Subclass RDoc::Markup::Formatter.
-	* lib/rdoc/markup/formatter.rb: Add RDoc::Markup::Formatter to make
-	  RDoc markup conversion easier.
-	* lib/rdoc/markup/fragments.rb: Make RDoc::Markup::ListItem easier to
-	  test.
-	* lib/rdoc/markup/to_html_hyperlink.rb: Pulled out of the HTML
-	  generator for easier reusability.
-	* lib/rdoc/markup.rb: Fix bug with labeled lists containing bullet
-	  lists.
-	* lib/rdoc/generators/html/html.rb: Fix Constant display.
-
-Sat Feb  9 23:44:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/tgamma.c (tgamma): use lgamma_r if available.
-
-Sat Feb  9 23:22:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/extconf.rb: simplified the condition.
-
-Sat Feb  9 21:20:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_math.rb: add tests for Math.gamma, Math.lgamma and
-	  Math.cbrt, and use assert_in_delta instead of assert.
-
-Sat Feb  9 18:34:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_cbrt): new method Math.cbrt.
-
-	* configure.in (cbrt): check for replacement functions.
-
-	* missing/cbrt.c: new file.
-
-Sat Feb  9 17:51:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): use strtod() for more
-	  precision.  [ruby-talk:290296]
-
-	* ext/bigdecimal/bigdecimal.c (BASE_FIG): made constant.
-
-	* ext/bigdecimal/extconf.rb: ditto.  [ruby-dev:33658]
-
-Sat Feb  9 12:06:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/tgamma.c (tgamma): add error check.
-
-Sat Feb  9 11:47:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_gamma): add error check.
-	  (math_lgamma): ditto.
-
-Sat Feb  9 11:09:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/lgamma_r.c (lgamma_r): return HUGE_VAL for non-positive
-	  integers.
-
-Sat Feb  9 10:03:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_new4): copy encoding from orig, instead of shared
-	  one.
-
-Sat Feb  9 01:01:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (lchmod_internal): fix warning cast from pointer to integer of
-	  different size.
-
-Sat Feb  9 00:44:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb::eval_input): rescues Interrupt and other than
-	  SystemExit and SignalException.  [ruby-core:15359]
-
-Fri Feb  8 23:51:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/lgamma_r.c (lgamma_r): use smaller argument for sin function.
-
-Fri Feb  8 22:10:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.open_http): rescue URI::InvalidURIError by
-	  URI.parse for location URI.
-
-Fri Feb  8 19:22:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (rb_str_derive): uses rb_str_subseq() for byte
-	  length.  [ruby-dev:33653]
-
-	* ext/iconv/iconv.c (iconv_convert): added toidx argument to set
-	  encoding of successfully converted string.  [ruby-dev:33221]
-
-Fri Feb  8 15:09:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (xsystem): expand macros like as make.
-
-Fri Feb  8 09:27:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/ri/driver.rb (read_yaml): remove SM* for compatibility.
-
-Fri Feb  8 00:07:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_hash.rb: follow the change of Hash#flatten.
-
-	* test/ruby/test_time.rb: add tests to achieve over 70% test coverage
-	  of time.c.
-
-	* test/ruby/test_prec.rb: ditto over 90% for prec.c.
-
-Thu Feb  7 19:11:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_dup): reverted unneeded change.  [ruby-dev:33634]
-
-	* string.c (rb_str_replace): makes frozen shared string before
-	  sharing.
-
-Thu Feb  7 16:33:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_reopen): don't change access mode for stdin, stdout and
-	  stderr.  [ruby-core:15360]
-
-Thu Feb  7 16:33:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_replace_shared): replaces string with sharing.
-
-	* string.c (rb_str_new4, rb_str_associate, rb_str_associated): allows
-	  associated strings shared.
-
-	* string.c (rb_str_dup, rb_str_substr, rb_str_replace): shares memory.
-	  [ruby-core:15400]
-
-Thu Feb  7 15:42:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_end_with): compares with the suffix.
-
-Thu Feb  7 15:03:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/korean.c: add support for CP949 by Park Ji-In.
-	  [ruby-dev:33626]
-
-Thu Feb  7 11:11:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* missing/lgamma_r.c (lgamma_r): some compilers don't permit dividing
-	  by literal 0.0. use const variable instead.
-
-	* {bcc32,win32,wince}/Makefile.sub (MISSING): add lgamma_r.obj and
-	  tgamma.obj.
-
-Thu Feb  7 10:39:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_gamma): new method Math.gamma.
-	  (math_lgamma): new method Math.lgamma.
-
-	* include/ruby/missing.h (tgamma): declared unless HAVE_TGAMMA.
-	  (lgamma_r): declared unless HAVE_LGAMMA_R.
-
-	* configure.in (tgamma): check for replacement functions.
-	  (lgamma_r): ditto.
-
-	* missing/tgamma.c: new file.  based on gamma.c from
-	  "C-gengo niyoru saishin algorithm jiten" (New Algorithm handbook
-	  in C language) (Gijyutsu hyouron sha, Tokyo, 1991)
-	  by Haruhiko Okumura.
-
-	* missing/lgamma_r.c: ditto.
-
-	* LEGAL (missing/tgamma.c): describe as public domain.
-	  (missing/lgamma_r.c): ditto.
-
-Thu Feb  7 09:05:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_enc_from_index): BINARY does not
-	  have in-bound encoding index.
-
-Thu Feb  7 04:26:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/korean.c: add EUC-KR conversion support by Park Ji-In.
-	  [ruby-dev:33621]
-
-Wed Feb  6 01:47:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_flatten): do not flatten recursively by default.
-	  [ruby-dev:33603]
-
-Wed Feb  6 00:50:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insns.def (adjuststack): never use INC_SP with minus value because
-	  some compilers cannot deal it correctly. use DEC_SP instead.
-
-Wed Feb  6 00:48:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_hash.rb: add tests to achieve over 90% test coverage
-	  of hash.c.
-
-	* test/ruby/test_env.rb: ditto.
-
-Wed Feb  6 00:24:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* hash.c (env_rassoc): remove access to free'd environment on mswin32.
-
-Tue Feb  5 21:57:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (rb_call_super): pass a passed block when super is called via
-	  rb_call_super.  [ruby-dev:33598]
-
-Tue Feb  5 11:14:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (INSTALL_DIRS, install_dirs): added BINDIR.
-
-	* lib/mkmf.rb (install_files): rejects files matching to
-	  $NONINSTALLFILES.
-
-	* lib/mkmf.rb (init_mkmf): defaults $NONINSTALLFILES to backup and
-	  temporary files.
-
-Mon Feb  4 21:52:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/delegate.rb (DelegateClass): use define_method instead of
-	  module_eval to improve performance.  [ruby-dev:33586]
-
-Mon Feb  4 16:44:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): NSIG is not defined if _XOPEN_SOURCE > 500L.
-	  [ruby-dev:33584]
-
-Mon Feb  4 14:51:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_enc_symname2_p): support "!", "!=" and "!~".
-	  [ruby-dev:33592]
-
-Mon Feb  4 13:58:42 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator.preserved, DelegateClass.methods): extend
-	  shouldn't be delegated. [ruby-dev:32987], etc.
-
-Mon Feb  4 08:59:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::[]): no more transition
-	  extend(CGI::Value).  a patch from <tommy AT tmtm.org> in
-	  [ruby-dev:33583].
-
-Sun Feb  3 21:13:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_numeric.rb: forgot to add this (at r15360).
-
-	* test/ruby/test_file_exhaustive.rb: add tests to achieve over 80% test
-	  coverage of file.c.
-
-Sat Feb  2 20:06:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/benchmark.rb (Benchmark::realtime): make Benchmark#realtime
-	  a bit faster.  a patch from Alexander Dymo <dymo AT ukrpost.ua> in
-	  [ruby-core:15337].
-
-Sat Feb  2 17:40:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* time.c (time_cmp): Time.<=> no longer supports comparison with
-	  numeric. [ruby-core:15332]
-
-Sat Feb  2 09:53:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): disabled fat-binary support which confuses
-	  configure much, since ``universal'' implies hidden cross-compiling.
-	  TODO: ruby and libruby.bundle might be possible to bound with `lipo'
-	  after builds for each archs.  Anyway, config.h and rbconfig.rb must
-	  be separated definitely at least.
-
-Sat Feb  2 09:28:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* random.c (limited_big_rand): fix buffer overflow when SIZEOF_BDIGITS
-	  is 2.  fixed by Kenta Murata.  [ruby-dev:33565]
-
-Fri Feb  1 21:42:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): _XOPEN_SOURCE is necessary to make ucontext_t
-	  consistent with the library implementation of MacOS X 10.5.
-	  [ruby-dev:33461]
-
-	* configure.in (darwin): ucontext on PowerPC MacOS X 10.5 is broken.
-
-Fri Feb  1 11:44:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb (C_ESC): use octal escape to avoid
-	  "\x09for (;;) ..." to be interpret the first character 0x9f.
-
-Thu Jan 31 23:06:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb: suppress warnings during test.
-
-	* test/ruby/test_enum.rb: ditto.
-
-	* test/ruby/test_integer.rb: add tests to achieve over 90% test
-	  coverage of numeric.c.
-
-	* test/ruby/test_float.rb: ditto.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-	* test/ruby/test_numeric.rb: ditto.
-
-	* test/ruby/test_pack.rb: add tests to achieve over 90% test coverage
-	  of pack.c.
-
-Thu Jan 31 17:30:42 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* marshal.c (r_object0): no need to call r_entry for immediate values.
-
-Thu Jan 31 15:46:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/formatter.rb (output): add accessor.
-
-	* lib/rdoc/ri/display.rb (page): replace @formatter.output instead of
-	  $stdout.
-
-Thu Jan 31 15:06:50 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* marshal.c (r_object0): call r_entry/r_leave to call proc when
-	  TYPE_FIXNUM, TYPE_NIL, TYPE_TRUE, TYPE_FALSE, TYPE_SYMBOL.
-
-Thu Jan 31 14:03:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/display.rb (display_method_list, display_class_list):
-	  use @formatter.raw_print_line instead of puts.
-
-	* lib/rdoc/ri/driver.rb (select_methods): new method to collect all
-	  instance/class methods which match with passed pattern.
-
-	* lib/rdoc/ri/driver.rb (run): use class_cache's result directly
-	  instead of select_classes' because it's removed now.
-
-	* lib/rdoc/ri/driver.rb (run): search methods when passed name is not
-	  class name. [ruby-core:15309]
-
-Thu Jan 31 08:31:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ext/extmk.rb, instruby.rb): inlined $(MAKE) so that can
-	  be executed even with -n.
-
-Thu Jan 31 06:24:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_close_read): replaces fptr with the tied writer if
-	  duplex.
-
-	* io.c (rb_io_close_write): unties the tied IO for writing if duplex.
-	  [ruby-dev:33532]
-
-Thu Jan 31 02:22:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): allow encoding key to take two encoding
-	  names.  a patch from <rubikitch AT ruby-lang.org>.  [ruby-dev:33540]
-
-Thu Jan 31 02:15:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (dsym): allow empty symbols.  [ruby-core:15248]
-
-Thu Jan 31 00:01:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (select_internal): fix SEGV by `select [STDIN],nil,[STDIN]'.
-	  fixed by Petr Chromec.
-	  http://rubyforge.org/tracker/index.php?func=detail&aid=17275&group_id=426&atid=1698
-
-Wed Jan 30 17:32:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/*.c: add GB12345, UCS-{2,4}{BE,LE}.
-
-Wed Jan 30 14:32:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/driver.rb (cache_file_for): shouldn't use `:' in filename.
-
-Wed Jan 30 14:27:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_succ): use wrapped character as a carry for
-	  ASCII incompatible encoding.
-
-Wed Jan 30 12:26:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/utf_16be.c (UTF16_IS_SURROGATE_FIRST): avoid branch.
-	  (UTF16_IS_SURROGATE_SECOND): ditto.
-	  (UTF16_IS_SURROGATE): defined.
-	  (utf16be_mbc_enc_len): validation implemented.
-
-	* enc/utf_16le.c (UTF16_IS_SURROGATE_FIRST): avoid branch.
-	  (UTF16_IS_SURROGATE_SECOND): ditto.
-	  (UTF16_IS_SURROGATE): defined.
-	  (utf16le_mbc_enc_len): validation implemented.
-
-Wed Jan 30 12:06:43 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* bignum.c (rb_cstr_to_inum): '0_2' is a valid representation.
-
-Wed Jan 30 11:57:50 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* bootstraptest/runner.rb: fix -I../../hoge case.
-
-Wed Jan 30 01:25:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_range.rb: add tests to achieve over 90% test coverage
-	  of range.c.
-
-Wed Jan 30 00:09:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_tw.c (euctw_mbc_enc_len): validation implemented.
-
-Tue Jan 29 22:58:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_enumerator.rb: add tests to achieve over 90% test
-	  coverage of enumerator.c.
-
-	* test/ruby/test_enum.rb: add for enum.c.
-
-Tue Jan 29 22:29:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enumerator.c: fix documents.
-
-Tue Jan 29 22:27:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* range.c: fix SEGV by ("a" .. "z").step(2 ** 30) { }.
-
-Tue Jan 29 21:59:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_tw.c (euctw_islead): 0x8e is a leading byte.
-
-Tue Jan 29 21:55:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c: move object allocation out of blocking_region.
-	  [ruby-dev:33139]
-
-Tue Jan 29 20:37:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/make_transdb.rb: add for make transdb.h.
-
-	* dmytranscode.c: add for miniruby.
-
-	* enc/gbk.c (gbk_left_adjust_char_head, gbk_is_allowed_reverse_match):
-	  fix odd regexp match. [ruby-dev:33502]
-
-Tue Jan 29 20:17:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub (MINIOBJS): add dmytranscode.$(OBJEXT).
-
-Tue Jan 29 19:39:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in, common.mk: fix rule for dmytranscode.o.
-
-Tue Jan 29 19:03:16 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_to_Windows_31J): to 'Windows-31J'.
-
-	* common.mk: add rules for transdb.h.
-
-	* transcode.c (init_transcoder_table): use transdb.h.
-
-Tue Jan 29 18:05:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (encdb_{replicate,alias,dummy,declare}): define only if
-	  NO_ENCDB_H is not defined.
-
-Tue Jan 29 17:54:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gbk.c (EncLen_gbk): too short. [ruby-dev:33497]
-
-Tue Jan 29 17:25:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dmyencoding.c, encoding.c (enc_init_db, NO_ENCDB_H):
-	  miniruby doesn't use encdb.
-
-	* common.mk: encdb.h use miniruby.
-
-Tue Jan 29 17:37:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/gb18030.c (gb18030_mbc_enc_len): validation implemented.
-
-Tue Jan 29 17:01:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/ifchange: remove $temp when unchanged.
-
-Tue Jan 29 16:59:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* insns.def (toregexp): generate a regexp from strings instead of one
-	  string.
-
-	* re.c (rb_reg_new_ary): defined for toregexp.  it concatenates
-	  strings after each string is preprocessed.
-
-	* compile.c (compile_dstr_fragments): split from compile_dstr.
-	  (compile_dstr): call compile_dstr_fragments.
-	  (compile_dregx): defined for dynamic regexp.
-	  (iseq_compile_each): use compile_dregx for dynamic regexp.
-
-	  [ruby-dev:33400]
-
-Tue Jan 29 16:25:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk, ext/extmk.rb: always make encdb.h.
-
-Tue Jan 29 12:53:39 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gbk.c: add GBK, CP936 and CP949.
-
-	* enc/euc_kr.c: remove CP949.
-
-	* enc/euc_cn.c: remove CP936 and rename to gb2312.c
-
-	* enc/gb2312.c: GB2312 is preferred MIME name.
-
-Tue Jan 29 03:01:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (reg_fragment_setenc_gen): US-ASCII script special code.
-
-	* parse.y (reg_fragment_check_len, reg_compile_gen): no need such
-	  trick.
-	  [ruby-dev:33399]
-
-	* test/ruby/test_m17n.rb (test_regexp_usacii_literal): add tests.
-
-Tue Jan 29 01:38:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk ($(srcdir)/revision.h): no need to show ifchange execution
-	  because ifchange echos updated or unchanged.
-
-Tue Jan 29 01:26:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (up): use last changed revision.
-
-	* common.mk (up): force to update revision.h.
-
-Tue Jan 29 00:12:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): should be US-ASCII.
-
-Tue Jan 29 00:10:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-set-encoding): updates magic comment.
-
-Mon Jan 28 23:47:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (rb_id2str, ripper_initialize, Init_ripper):
-	  use rb_usascii_str_new2. [ruby-dev:33449]
-
-Mon Jan 28 19:37:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (ole_cp2encoding): new function.
-
-	* ext/win32ole/win32ole.c (ole_wc2vstr, ole_variant2val, fole_missing):
-	  set encoding to result.
-
-	* ext/win32ole/win32ole.c (fole_s_set_code_page, Init_win32ole): set
-	  default encoding.
-	  [ruby-dev:33433]
-
-Mon Jan 28 11:17:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c, parse.y, re.c: use rb_ascii8bit_encoding.
-
-Mon Jan 28 17:54:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_7.h: add dummy encoding UTF-7 and its alias CP65000.
-
-Mon Jan 28 17:41:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/utf_8.c: add alias CP65001.
-
-Mon Jan 28 15:33:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/big5.c (big5_mbc_enc_len): validation implemented.
-
-Mon Jan 28 13:02:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_kr.c (euckr_mbc_enc_len): validation implemented.
-
-Mon Jan 28 11:24:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_str_new): encoding of UTF-8 literal string in
-	  US-ASCII script is UTF-8. [ruby-dev:33406]
-
-Mon Jan 28 10:25:59 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_m17n.rb (test_magic_comment): add test.
-
-Mon Jan 28 09:34:54 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (help): use double quotes for nmake.
-
-Mon Jan 28 00:39:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_set_encode): check if encoding is ASCII compatible.
-
-Mon Jan 28 01:21:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_open_file): should check NUL in path.
-	  <http://www.rubyist.net/~matz/20080125.html#c01>.
-
-	* io.c (rb_io_s_popen): ditto.
-
-	* io.c (rb_io_reopen): ditto.
-
-	* io.c (next_argv): ditto.
-
-Sun Jan 27 23:33:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): fix for left justify flag.
-
-	* sprintf.c (rb_str_format): zero-precision zero bug revised.
-	  [ruby-dev:33419]
-
-Sun Jan 27 23:20:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h: precise mbclen API redesigned to avoid
-	  inline functions.
-	  (onigenc_mbclen_charfound): removed.
-	  (onigenc_mbclen_needmore): removed.
-	  (onigenc_mbclen_recover): removed.
-	  (ONIGENC_MBCLEN_CHARFOUND): removed.
-	  (ONIGENC_MBCLEN_CHARFOUND_P): defined.
-	  (ONIGENC_MBCLEN_CHARFOUND_LEN): defined.
-	  (ONIGENC_MBCLEN_INVALID): removed.
-	  (ONIGENC_MBCLEN_INVALID_P): defined.
-	  (ONIGENC_MBCLEN_NEEDMORE): removed.
-	  (ONIGENC_MBCLEN_NEEDMORE_P): defined.
-	  (ONIGENC_MBCLEN_NEEDMORE_LEN): defined.
-	  (ONIGENC_MBC_ENC_LEN): use onigenc_mbclen_approximate.
-
-	* regenc.c (onigenc_mbclen_approximate): defined.
-
-	* include/ruby/encoding.h (MBCLEN_CHARFOUND): removed.
-	  (MBCLEN_INVALID): removed.
-	  (MBCLEN_NEEDMORE): removed.
-	  (MBCLEN_CHARFOUND_P): defined.
-	  (MBCLEN_INVALID_P): defined.
-	  (MBCLEN_NEEDMORE_P): defined.
-	  (MBCLEN_CHARFOUND_LEN): defined.
-	  (MBCLEN_NEEDMORE_LEN): defined.
-
-	* encoding.c: use new API.
-
-	* re.c: ditto.
-
-	* string.c: ditto.
-
-	* parse.y: ditto.
-
-Sun Jan 27 22:55:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (value_expr_gen): reverted r12880.  [ruby-dev:33388]
-
-Sun Jan 27 22:33:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): fix for octal with precision.
-	  [ruby-dev:33411]
-
-Sun Jan 27 22:31:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-set-encoding): automatically insert
-	  encoding magic comment.
-
-	* misc/ruby-mode.el (ruby-mode): set ruby-mode-set-encoding to buffer
-	  local before-save-hook.
-
-Sun Jan 27 19:51:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_inspect): avoid exception by
-	  "\#\xa1".force_encoding("euc-jp").inspect.
-
-Sun Jan 27 19:07:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_succ): warning suppressed.
-
-Sun Jan 27 18:18:13 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (help): show major targets.
-
-Sun Jan 27 17:54:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c: raise error when no output encoding is given.
-
-Sun Jan 27 17:20:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_succ): don't increment/decrement codepoint.
-
-Sun Jan 27 16:03:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex#buf_input): use chars.to_a.
-
-Sun Jan 27 16:27:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8: update nkf.
-
-Sun Jan 27 16:25:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_source): set encoding as regexp encoding.
-
-Sun Jan 27 05:56:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_preprocess): force fixed encoding when ASCII
-	  incompatible source string.
-
-Sat Jan 26 23:46:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): zero-precision zero should be empty.
-	  [ruby-dev:33363]
-
-	* sprintf.c (rb_str_format): not prepend octal prefix to negative or
-	  zero value.  [ruby-dev:33363], [ruby-dev:33367]
-
-Sat Jan 26 23:42:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (assignable_gen, keyword_to_name): __ENCODING__ was missing.
-
-Sat Jan 26 19:08:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (w_object): dump string encoding in USERDEF.
-	  [ruby-dev:33401]
-
-Sat Jan 26 17:42:23 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): validate argument expr of "next"
-	  statement.
-
-	* bootstraptest/test_syntax.rb: add a test.
-
-Sat Jan 26 17:22:46 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, compile.h: fix to calculate correct stack depth
-	   at each instruction.
-
-Sat Jan 26 09:41:02 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/doctype.rb, test/rss/test_maker_itunes.rb: replace
-	  multi-byte string.
-
-	* test/json/{test_json.rb, test_json_unicode.rb}:
-	  add magic comment.
-
-Sat Jan 26 09:30:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_usascii_encindex): added prototype.
-
-	* include/ruby/intern.h (rb_usascii_str_new, rb_usascii_str_new2):
-	  ditto.
-
-Sat Jan 26 09:17:13 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_new): set US-ASCII and ENC_CODERANGE_7BIT when
-	  empty string (len == 0).
-
-Sat Jan 26 03:41:53 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_initialize): set default script encoding as US-ASCII.
-
-	* ruby.c (load_file): ditto.
-
-	* ruby.c (process_options): set script encoding of -e from locale
-	  except when -K is specified.
-
-	* ruby.c (load_file): set script encoding of stdin from locale except
-	  when -K is specified. [ruby-dev:33375]
-
-Sat Jan 26 02:51:06 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, compile.h: fix stack pointer issues.
-	  calculate correct stack depth at compile time.
-
-	* insns.def (emptstack): remove it and add a new insn "adjuststack".
-
-	* bootstraptest/test_knownbug.rb: move/remove fixed test.
-
-	* bootstraptest/test_syntax.rb: ditto.
-
-Sat Jan 26 00:17:18 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_usascii_new{,2}: defined.
-	  (rb_str_new): set US-ASCII and ENC_CODERANGE_7BIT when empty
-	  string.
-
-	* encoding.c (rb_usascii_encoding, rb_usascii_encindex): defined.
-	  (rb_enc_inspect, enc_name, rb_locale_charmap, rb_enc_name_list_i):
-	  use rb_str_ascii_new.
-
-	* array.c (recursive_join, inspect_ary): ditto.
-
-	* object.c (nil_to_s, nil_inspect, true_to_s, false_to_s,
-	  rb_mod_to_s): ditto.
-
-	* hash.c (inspect_hash, rb_hash_inspect, rb_f_getenv, env_fetch,
-	  env_clear, env_to_s, env_inspect): ditto.
-
-	* numeric.c (flo_to_s, int_chr, rb_fix2str): ditto.
-
-	* bignum.c (rb_big2str): ditto.
-
-	* file.c (rb_file_ftype, rb_file_s_dirname, rb_file_s_extname,
-	  file_inspect_join, Init_file): ditto.
-
-	* test/ruby/test_ruby_m17n.rb: add checks for encoding of string.
-
-Sat Jan 26 01:35:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (r_byte): use getbyte instead of getc.
-	  (marshal_load): ditto.
-	  [ruby-dev:33264]
-
-Sat Jan 26 00:43:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_getline_fast): don't care ASCII incompatible encoding.
-	  (prepare_getline_args): generate a newline according to IO encoding
-	  when necessary.
-	  (rb_io_getline_1): call rb_io_getline_fast only for ASCII
-	  compatible encoding.
-
-Fri Jan 25 21:49:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_buf_cat_ascii): use rb_enc_cr_str_buf_cat.
-
-Fri Jan 25 19:38:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (version.$(OBJEXT)): depends on $(srcdir)/revision.h.
-
-	* common.mk (revision.h): extracts revision number with ``svn info''.
-
-	* common.mk (up): target to update from the repository.
-
-	* Makefile.in, {win,bcc}32/Makefile.sub (IFCHANGE): tool to update a
-	  file if changed.
-
-	* tool/ifchange: for unixen.
-
-	* win32/ifchange.bat: some fix
-
-Fri Jan 25 17:12:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): set default to ASCII-8BIT explicitly if -K
-	  option is not given.
-
-Fri Jan 25 16:31:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_str_buf_cat_ascii): declared.
-
-	* string.c (rb_str_buf_cat_ascii): defined.
-
-	* re.c (rb_reg_s_union): use rb_str_buf_cat_ascii to support ASCII
-	  incompatible encoding.
-
-Fri Jan 25 16:11:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options, load_file, rb_load_file): propagates script
-	  encoding by -K to libraries.  [ruby-dev:33156]
-
-Fri Jan 25 15:56:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (cmdline_arguments): split argc and argv from cmdline_options.
-
-	* ruby.c (process_options): not set encoding of -e option from -E
-	  option if they are not compatible.
-
-Fri Jan 25 13:15:23 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (proc_options, process_options, load_file): shouldn't effect
-	  --encoding to script encoding. [ruby-dev:33169]
-
-Fri Jan 25 10:31:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* */*.bat: set svn:mime-type to text/batch.
-
-Thu Jan 24 23:23:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enum.c (enum_one, enum_take_while, enum_drop_while): fix documents.
-
-Thu Jan 24 21:46:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (reg_fragment_setenc_gen): associate ASCII-8BIT only if
-	  str has only ASCII characters.
-
-Thu Jan 24 20:46:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_m17n.rb: follow to the following changes.
-
-Thu Jan 24 20:21:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parser.y (parser_str_new): automatically update string literal's
-	  encoding from US-ASCII to ASCII-8BIT when script encoding is US-ASCII
-	  and the string includes non-ascii bytes. [ruby-dev:33348]
-
-	* parser.y (reg_fragment_check_gen, reg_compile_gen): automatically
-	  update regexp literal's encoding from US-ASCII to ASCII-8BIT when
-	  script encoding is US-ASCII, the regexp has no kcode option and the
-	  regexp includes non-ascii bytes. [ruby-dev:33353]
-
-Thu Jan 24 19:36:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic::inspect): use Kernel#to_s instead
-	  object_id with printf.  [ruby-dev:33347]
-
-Thu Jan 24 19:29:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (remove_sign_bits): returns pointer to the first char to
-	  be used, instead of copying.
-
-	* sprintf.c (rb_str_format): negative indicator dots should come
-	  before sign digits always.  [ruby-dev:33224]
-
-Thu Jan 24 18:19:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_is_newline): parenthesized arguments.
-
-Thu Jan 24 18:14:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_reg_fixed_encoding_p): no need to treat ASCII-8BIT specially.
-
-Thu Jan 24 16:53:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): 7bit clean regexp should be US-ASCII.
-	  [ruby-dev:33346]
-
-Thu Jan 24 16:31:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast): the end point of left_char_head()
-	  must be the last character.  [ruby-cvs:22445]
-
-Thu Jan 24 16:24:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (reg_fragment_setenc_gen): recognize regexp with option n as
-	  as ASCII-8BIT instead of US-ASCII. [ruby-dev:33339]
-
-Thu Jan 24 15:44:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (collect_bang_i): use rb_ary_store() to avoid potential
-	  memory corruption.  a patch from Yusuke Endoh <mame@tsg.ne.jp>
-	  in [ruby-dev:33328].
-
-	* array.c (ITERATE): remove unnecessary macro.
-
-	* array.c (sort_1): remove ary_sort_check().  in-place sort keep
-	  original elements even when it's modified.
-
-	* array.c (sort_2): ditto.
-
-Thu Jan 24 15:09:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (make_time_t): revert round trip test.  [ruby-dev:33058]
-
-Thu Jan 24 11:14:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): ASCII incompatible encoding is
-	  not compatible with any other encoding.
-
-Thu Jan 24 07:34:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (STR_NEW0): set encoding as US-ASCII.
-
-Thu Jan 24 03:47:41 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/text.rb, lib/rubygems/open-uri.rb, lib/open-uri.rb,
-	  test/logger/test_logger.rb, test/ruby/test_regexp.rb:
-	  fix tests. [ruby-dev:33336]
-
-Thu Jan 24 03:23:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_line): use memchr(3) for faster newline
-	  search.
-
-	* io.c (appendline): remove unused arguments
-
-	* io.c (rb_io_getline_fast): make much simpler (and faster).
-
-Thu Jan 24 02:13:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* insns.def (expandarray): fix stack inc.  [ruby-dev:32892]
-
-	* bootstraptest/test_knownbug.rb, test_massign.rb: move a fixed test.
-
-Thu Jan 24 01:00:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.{c, h} (rb_usascii_encoding): added.
-
-	* parse.y (parser_str_new, rb_intern3): ascii only string literal is
-	  US-ASCII.
-
-	* ruby.c (proc_optionc): -Kn means ASCII-8BIT.
-
-Wed Jan 23 23:54:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sprintf.c: fix comment.  [ruby-dev:33275]
-
-	* math.c: fix comment.  [ruby-dev:33276]
-
-Wed Jan 23 22:47:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_struct.rb: add tests to achieve over 90% test
-	  coverage of struct.c.
-
-	* test/ruby/test_sprintf.rb: ditto for sprintf.c.
-
-	* test/ruby/test_math.rb: ditto for math.c.
-
-Wed Jan 23 22:14:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_from_Windows_31J, rb_to_Windows_31J):
-	  provisional workaround for Windows-31J.  [ruby-dev:33320]
-
-Wed Jan 23 15:25:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_strftime): copy encoding from format.  [ruby-dev:33303]
-
-Wed Jan 23 15:04:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_make_independent): should set length.
-
-	* string.c (rb_str_associate): hide associated array from ObjectSpace.
-
-	* string.c (rb_str_associated): return associated array with freezing
-	  instead of false.  [ruby-dev:33282]
-
-	* string.c (rb_str_freeze): freeze associated array together.
-
-Wed Jan 23 13:39:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): fix SEGV by
-	  /a/ =~ "aa".force_encoding("utf-16be").
-
-Wed Jan 23 11:53:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_mod_check, str_nth, str_offset): constified.
-
-	* string.c (rb_str_dump): dump in ASCII-8BIT always.
-
-Wed Jan 23 10:18:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.c (rb_export_method): set ruby_vm_redefined_flag for
-	  visibility change as well.  reported by K.Kosako in
-	  http://d.hatena.ne.jp/kkos/20080122#1201012720.
-
-Tue Jan 22 22:26:23 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb: change some tests because rational
-	  redefines Bignum#quo and Bignum#**.
-
-Tue Jan 22 20:58:15 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): need to output sodir rule.
-
-Tue Jan 22 19:37:16 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): lib files shouldn't depend on install
-	  dir because if the dir is newer than lib files, lib files will be
-	  always copied.
-
-Tue Jan 22 17:52:52 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/utf_16_32.c: Streamline parentheses, add more
-	  'static' qualifiers.
-
-Tue Jan 22 12:57:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in (MINIRUBY): remove -I$(EXTOUT)/$(arch) from
-	  MINIRUBY since miniruby might not be able to load DLL.
-
-	* test/ruby/test_m17n.rb: move tests from bootstrap test.
-
-	* encoding.c (enc_find): should check name if ASCII compatible.
-
-	* string.c (rb_str_end_with): should check character boundary.
-
-	* encoding.c (rb_enc_compatible): encoding must be ASCII
-	  compatible before checking ENC_CODERANGE_7BIT.
-
-	* encoding.c (rb_enc_compatible): wrong compatibility condition.
-	  [ruby-dev:33273]
-
-Tue Jan 22 09:26:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): iterates over a shadow.
-	  [ruby-dev:33243]
-
-Tue Jan 22 08:59:52 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/formatter.rb:  Indent labeled lists like note lists.
-
-	* test/rdoc/test_rdoc_ri_overstrike_formatter.rb:  Added.
-
-	* test/rdoc/test_rdoc_ri_formatter.rb:  Added tests.
-
-Tue Jan 22 04:40:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (rb_intern3): do not call rb_enc_mbclen() if *m is
-	  ASCII.  [ruby-talk:287225]
-
-	* string.c (rb_str_each_line): use rb_enc_is_newline() to gain
-	  performance if the record separator ($/) is not modified.
-
-Tue Jan 22 01:15:51 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ChangeLog: format-time-string under C locale. [ruby-dev:33261]
-
-Tue Jan 22 00:45:12 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb: add tests for bignum.c.
-
-Tue Jan 22 00:30:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (big_shift): fix a bug that caused infinite loop when
-	  left shifting.
-
-Mon Jan 21 20:09:38 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (marshal_load): initialize the cache.
-
-Mon Jan 21 19:42:42 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c, enc/trans/utf_16_32.c, test/ruby/test_transcode.rb:
-	  added UTF-32BE and UTF-32LE conversions.
-
-Mon Jan 21 14:36:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (str_transcode): initialize transcoder in
-	  rb_transcoding.  [ruby-dev:33234]
-
-	* transcode_data.h (rb_transcoding): transcoder constified.
-
-Mon Jan 21 12:50:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c, gc.c (setjmp): sigsetjmp is a macro on cygwin.
-
-Mon Jan 21 12:35:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_loop, str_transcoding_resize): use unsigned
-	  char.  [ruby-dev:33232]
-
-	* transcode_data.h (rb_transcoding, rb_transcoder): removed callback
-	  parameters.
-
-	* enc/trans/japanese.c: ditto.
-
-	* enc/trans/utf_16_32.c: parenthesized bit-or operands.
-
-Mon Jan 21 11:59:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): move forward.  [ruby-dev:33231]
-
-Mon Jan 21 06:40:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_dispatch): constified return value.
-
-	* transcode_data.h (rb_transcoding): include pointer to rb_transcoder
-	  and auxiliary data.
-
-	* transcode_data.h (rb_transcoder): all callback functions should have
-	  their own parameters.
-
-	* enc/trans/{japanese,single_byte}.c: constified.
-
-Mon Jan 21 03:45:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): advance offset before get next char
-	  length.  [ruby-dev:33211]
-
-Sun Jan 20 20:00:20 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c, enc/trans/utf_16_32.c, test/ruby/test_transcode.rb:
-	  added UTF-16LE conversions.
-
-	* fixed changelog for last commit
-
-Sun Jan 20 17:54:00 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* added changelog for last commit
-
-Sun Jan 20 15:08:08 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/utf_16_32.c: new file, currently implementing
-	  UTF-16BE conversions only.
-
-	* test/ruby/test_transcode.rb: Added tests for UTF-16BE;
-	  made check_both_ways() use force_encoding differently.
-
-	* transcode_data.h, transcode.c: Support for more conversion
-	  functions.
-
-Sun Jan 20 13:06:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): performance improvement, and stop if
-	  shortened in the block.  [ruby-dev:33189]
-
-Sun Jan 20 09:12:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: use -Ks when read insns.def. [ruby-dev#33185]
-
-	* parse.y: fix -e and stdin strings aren't set encoding.
-
-Sun Jan 20 05:12:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/make_encdb.rb: fix duplication check.
-
-Sun Jan 20 05:03:46 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ascii.c: remove definition of replica KOI8-U.
-
-Sun Jan 20 00:33:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/koi8_u.c: added.
-
-	* regenc.c, enc/utf_8.c, enc/unicode.c, enc/gb18030.c: add ARG_UNUSED.
-
-Sat Jan 19 22:41:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (coderange_scan): don't call mbclen functions for ASCII
-	  characters with ASCII compatible encoding.
-
-Sat Jan 19 21:00:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rdoc/template.rb (RDoc): defined to avoid uninitialized constant
-	  error by `./ruby test/rubygems/test_gem_server.rb'.
-
-Sat Jan 19 20:41:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (enc_new): don't free rb_encoding to avoid SEGV by
-	  `miniruby -e exit' on x86_64 GNU/Linux.
-
-Sat Jan 19 18:40:19 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (once): use an instance variable which points a hash
-	  as cache. [experimental]
-
-Sat Jan 19 17:21:29 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: parse's hints as an
-	  experimental function has been removed.
-
-Sat Jan 19 11:21:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (sigsetjmp): check if available.
-
-	* eval.c, gc.c (setjmp): do not use _setjmp if sigsetjmp is available.
-
-Sat Jan 19 11:10:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: Remove wrong assumptions about Cygwin.  a patch from
-	  Corinna Vinschen in [ruby-Bugs-17018].
-
-Sat Jan 19 09:23:14 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_set_safe_array): should not use
-	  recursive calling.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-Sat Jan 19 08:58:47 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup: Remove ListBase and Line constants.
-
-	* lib/rdoc/ri: Allow output IO to be specified.
-
-	* test/rdoc/parser/test_parse_c.rb: Move up one level, fixed.
-
-	* test/rdoc/parser/test_rdoc_markup_attribute_manager.rb: Renamed to
-	  match new class name, updated to match new classes.
-
-	* test/rdoc/test_rdoc_ri_formatter.rb: Start of RI formatting tests.
-
-	* test/rdoc/test_rdoc_ri_attribute_manager.rb: Start of
-	  RDoc::RI::AttributeManager tests.
-
-	* test/rdoc/test_simple_markup.rb: Moved to match new class name.
-
-Sat Jan 19 08:35:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_prepare): get encoding from the first line.
-	  [ruby-dev:33168]
-
-	* ruby.c (load_file): set encoding to input with set_encoding.
-
-Sat Jan 19 03:46:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (thread_create_core): prohibit thread creation in the
-	  frozen thread group.  a patch in [ruby-dev:33176] from sheepman
-	  <sheepman AT sheepman.sakura.ne.jp>.
-
-	* thread.c (thread_create_core): should inherit ThreadGroup from
-	  the current thread.
-
-Sat Jan 19 00:37:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): set result encoding for wider width.
-
-Sat Jan 19 00:13:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (w32_wait_events): shouldn't invoke interrupt handle
-	  by timer_thread.
-
-Fri Jan 18 23:49:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_create_core): set thread group before creating
-	  thread.
-
-Fri Jan 18 20:19:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (ripper_initialize): too early to set parser->enc.
-
-Fri Jan 18 20:03:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.mak (BASERUBY): nmake cannot execute ruby correctly
-	  if the path of ruby.exe is quoted.
-
-	* win32/setup.mak ($(ARCH)): if a macro is appended by $(APPEND),
-	  a space will be inserted on the top of the line.
-
-Fri Jan 18 17:56:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h, insnhelper.h, thread_pthread.h, vm_core.h, vm_opts.h:
-	  prefixed include guards with RUBY.
-
-	* id.h: added include guard.
-
-	* regenc.h, regint.h, regparse.h: prefixed include guards with
-	  ONIGURUMA.
-
-Fri Jan 18 15:57:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_cleanup_func): ignore errors from destroying mutex
-	  of dead thread.  [ruby-core:15069]
-
-	* thread_pthread.c, thread_win32.c (native_thread_destroy): ditto.
-
-Fri Jan 18 15:56:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_name_list_i, rb_enc_aliases_enc_i): freeze
-	  element strings to be returned.
-
-Fri Jan 18 14:36:34 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_m17n.rb (test_str_dump): added test for
-	  String#dump. [ruby-dev:33142]
-
-Fri Jan 18 12:25:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (load_encoding): check if successfully loaded.
-
-	* encoding.c (rb_enc_find_index): use original encoding name to
-	  replicate loaded encoding instead alias.
-
-Fri Jan 18 09:43:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_char_to_option_kcode): Regexp switch `s' should mean
-	  Windows-31J, as wells as `-Ks'.
-
-Fri Jan 18 09:22:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_initialize): explicitly call rb_ascii8bit_encoding().
-
-	* parse.y (parser_prepare): lex_input may not be have encoding (e.g. IO).
-
-	* parse.y (rb_parser_compile_string): set encoding from input string.
-
-	* encoding.c (rb_enc_find_index): use ASCII-8BIT if loading known
-	  encoding failed.
-
-	* parse.y (ripper_initialize): move parser->enc initialization.
-
-	* encoding.c (rb_enc_aliases_enc_i): exclude non alias names from
-	  Encoding.aliases.
-
-	* encoding.c (rb_enc_find_index): use original encoding name to
-	  load DLL.
-
-Fri Jan 18 07:06:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (Init_IO): stdin/stdout may not be duplex.
-
-Fri Jan 18 04:27:57 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* sample/rdoc/markup/rdoc2latex.rb:  Fix for new namespacing.
-
-	* lib/rdoc/markup/to_latex.rb:  Fix namespacing.
-
-Fri Jan 18 02:02:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/runner.rb (assert_valid_syntax): added.
-
-	* bootstraptest/test_knownbug.rb: added test for [ruby-list:44479]
-
-Fri Jan 18 01:48:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): check argument number to
-	  attr_reader.  [ruby-core:15120]
-
-Fri Jan 18 00:49:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_check_readable): flush tied write IO too.
-
-	* io.c (Init_IO): tie stdin with stdout.  [ruby-core:15107]
-
-Fri Jan 18 00:23:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_free): removed since rb_encoding may be used while
-	  cleanup.
-
-Fri Jan 18 00:17:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/euc_cn.c: split from enc/euc_kr.c.
-
-Fri Jan 18 00:03:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_init): use default external encoding
-	  if nothing is given.  a patch from sheepman <sheepman AT
-	  sheepman.sakura.ne.jp> in [ruby-dev:33159].
-
-Thu Jan 17 23:56:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encdb.h): give output file name to make_encdb.rb.
-
-	* encoding.c (enc_table): simplified.
-
-	* encoding.c (enc_register_at): lazy loading.  [ruby-dev:33013]
-
-	* regenc.h (ENC_DUMMY): added.
-
-	* enc/make_encdb.rb: now emits macros only.
-
-	* enc/iso_2022_jp.h: split from encoding.c.
-
-Thu Jan 17 21:48:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_char_to_option_kcode): fixed typo.
-
-Thu Jan 17 21:01:25 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (Date::Infinity#<=>): didn't work.  A patch from
-	  Dirkjan Bussink <d.bussink AT gmail.com> [ruby-core:15098].
-	  This is a bug obviously.  However it didn't affect the library's
-	  functions.
-
-	* lib/date.rb, lib/date/format.rb: some trivial changes.
-
-Thu Jan 17 13:07:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_dump): preserve the encoding of source string
-	  if it is ASCII compatible.  otherwise, add '.force_encoding()'
-	  for ugly work around.  maybe we should implement some other way
-	  to keep non ASCII encoding in dumped string.  [ruby-dev:33142]
-
-Thu Jan 17 10:30:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fwrite): always flush IO on tty, even without newlines.
-	  [ruby-core:15107]
-
-Wed Jan 16 22:45:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_register_at): make own copy.  [ruby-dev:33136]
-
-Wed Jan 16 18:03:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open, rb_io_s_popen): clear temporary object to release
-	  and prevent from GC.
-
-Wed Jan 16 17:55:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (fix_quo): typo. a patch from Shin-ichiro HARA
-	  <sinara AT blade.nagaokaut.ac.jp> in [ruby-dev:33130]
-
-Wed Jan 16 17:36:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/test_delegate.rb: add new test file for delegate.rb.
-
-Wed Jan 16 16:14:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ruby.1: Fix grammar.
-
-Wed Jan 16 15:26:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (sys_fail2): get rid of unlimited alloca.
-
-	* io.c (mode_enc, pipe_open, rb_io_s_popen): ditto.
-
-	* load.c (rb_feature_p): ditto.
-
-	* object.c (rb_cstr_to_dbl): ditto.
-
-	* io.c (mode_enc): fixed uninitialized variable.
-
-Wed Jan 16 12:51:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_tmp_new, rb_str_shared_replace):
-	  prototype moved.
-
-Tue Jan 15 23:52:51 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/*: add ARG_UNUSED.
-
-	* enc/koi8_u.c: added.
-
-Tue Jan 15 23:00:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_{16,32}{be,le}.c: remove some ARG_UNUSED.  replace struct
-	  OnigEncodingST by OnigEncoding.
-
-Tue Jan 15 22:30:43 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENC_REGISTER): use &OnigEncoding*.
-	  (ENCINDEX_UTF_8): renamed from ENCINDEX_UTF8.
-	  (rb_enc_init): use ENC_REGISTER.
-
-	* include/ruby/oniguruma.h (OnigEncodingUTF8, ONIG_ENCODING_UTF8):
-	  removed.
-
-	* enc/*.c: remove use of &encoding_*; use enc argument instead.
-
-Tue Jan 15 18:44:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/utf_8.c: remove use of ONIG_ENCODING_UTF8 altogether; use
-	  enc argument instead.
-
-Tue Jan 15 18:05:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/utf_8.c (ONIG_ENCODING_UTF8): reverted.
-
-Tue Jan 15 18:01:55 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (MKFILES): add dependencies.
-
-Tue Jan 15 18:00:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/utf_8.c (OnigEncodingDefine): encoding name should be kept
-	  unchanged.
-
-Tue Jan 15 17:53:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/utf_8.c: renamed as IANA name.
-
-	* enc/Makefile.in: ditto.
-
-Tue Jan 15 16:59:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): encoding libraries cannot be loaded until
-	  load path is set.
-
-Tue Jan 15 15:09:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/setup.mak: strip out empty lines from CPP output.
-
-Tue Jan 15 14:57:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {win,bcc}32/setup.mak (-basic-vars-): expand BASERUBY to full path
-	  to get rid of ./ruby.exe.
-
-	* win32/enc-setup.mak: workaround for Borland make.
-
-Tue Jan 15 14:44:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): use ASCII-8BIT in miniruby.
-
-Tue Jan 15 13:54:41 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub (RUNRUBY): need to set archdir when
-	  invoking ruby.
-
-Tue Jan 15 13:43:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (us_ascii.o): add dependencies. [ruby-dev:33111]
-
-Tue Jan 15 03:41:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (eval): check if backtrace is empty.  [ruby-core:15040]
-
-Tue Jan 15 01:28:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: simplified dummy objects dependencies.
-
-Tue Jan 15 01:19:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (OBJS): moved encoding.o from COMMONOBJS.
-
-	* common.mk (dmyencoding.o): added.  [ruby-dev:33099]
-
-	* configure.in, {win,bcc}32/Makefile.sub (MINIOBJS): added
-	  dmyencoding.o.
-
-	* dmyencoding.c (rb_locale_charmap): returns nil for miniruby.
-
-Tue Jan 15 00:05:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (appendline): specifying limit should not generate broken
-	  byte sequence.  strings should be rounded.  [ruby-dev:33088]
-
-Mon Jan 14 23:33:02 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (Kconv.tolocale): argument is str.
-
-Mon Jan 14 23:31:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in (setup): add -I$(EXTOUT)/$(arch) to MINIRUBY.
-
-	* bootstraptest/runner.rb (main): expand -I directory path.
-
-Mon Jan 14 23:28:10 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/enc-setup.mak (BUILTIN_ENCOBJS): depends on enc/Makefile.in.
-
-Mon Jan 14 22:48:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_char_to_option_kcode): use rb_enc_find_index() instead
-	  of using fixed index value.
-
-	* enc/Makefile.in (encsrcdir): make US-ASCII built-in.
-
-Mon Jan 14 22:25:02 2008  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb: Shorter method name completion.  Same method
-	  used for const missing. do_while and do_until added.  Enumerator
-	  gains all of Array's abilities. Ex:
-	    '123'.m{|i|i*2} #=> "112233"
-	    '123'.pe #=> '123'.perm*' ' #=> "123 132 213 231 312 321"
-	  base on a patch from Darren Smith <darrenks AT ml1.net>.
-
-Mon Jan 14 21:10:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/us_ascii.c: wrong alias name: ANSI_X3.4-1986.
-
-	* rubytest.rb: add -I#{srcdir} to load encoding DLL.
-
-Mon Jan 14 18:53:58 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: clear thread structure.
-	  (TODO: survey that child process should clear mutex or not).
-
-	* bootstraptest/test_knownbug.rb, test_thread.rb: move a fixed test.
-
-Mon Jan 14 18:43:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: add "flunk" method.
-
-	* bootstraptest/test_knownbug.rb: fix to use flunk.
-
-Mon Jan 14 18:10:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.h: remove dangerous assembler sentence.
-
-Mon Jan 14 18:06:37 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_locale_encoding): return US-ASCII when charmap is
-	  nil.
-
-Mon Jan 14 16:12:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/shellwords.rb: scape should be an alias to shellescape.  a
-	  patch from Masahiro Kawato <m-kawato AT mwb.biglobe.ne.jp> in
-	  [ruby-dev:33060].
-
-Mon Jan 14 16:09:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.1: a patch to describe --encoding.  a patch from Yugui
-	  <yugui AT yugui.sakura.ne.jp> in [ruby-dev:33079].
-
-	* ruby.c: ditto.
-
-Mon Jan 14 13:49:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): initialize error message buffer.
-	  (rb_reg_search): ditto.
-	  (rb_reg_check_preprocess): ditto.
-	  (rb_reg_new_str): ditto.
-	  (rb_enc_reg_new): ditto.
-	  (rb_reg_compile): ditto.
-	  (rb_reg_initialize_m): ditto.
-	  (rb_reg_s_union_m): ditto.
-
-Mon Jan 14 12:33:07 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup*:  Renamespace from SM::SimpleMarkup to
-	  RDoc::Markup.
-
-Mon Jan 14 10:45:45 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/ascii.c: Exchanged order of arguments for one ENC_ALIAS
-
-Mon Jan 14 09:19:07 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/time.rb: do not reference Time directly from the inside of
-	  definitions. [ruby-dev:33059]
-
-Mon Jan 14 05:44:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/*.c: add replicas and aliases.
-
-	* enc/make_encdb.h: add duplicate and undefined check.
-
-Mon Jan 14 02:03:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/oniguruma.h: remove ONIG_ENCODING_* and OnigEncoding*
-	  which are not builtin.
-
-	* regenc.{c,h} (onigenc_mb2_code_to_mbclen, onigenc_mb4_code_to_mbclen):
-	  fix prototype.
-
-	* enc/big5.c, enc/euc_kr.c, enc/euc_tw.c, enc/gb18030.c,
-	  enc/koi8_r.c, enc/windows_1251.c: imported from Oniguruma.
-
-Sun Jan 13 22:47:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/make_encdb.h: sort encoding names by original name.
-
-	* encoding.c, enc/*.c: define replicas and aliases.
-
-Sun Jan 13 20:24:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c: add documents.
-
-Sun Jan 13 18:41:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): moved initialization from encdb.h.
-
-	* enc/make_encdb.rb (enc_name_list): constified.
-
-	* enc/make_encdb.rb (enc_init_db): moved some functions to encoding.c.
-
-Sun Jan 13 13:53:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): local variable was not initialized when -x flag
-	  is given.
-
-	* ruby.c (load_file): script files should not be affected by locale.
-	  [ruby-dev:33054]
-
-Sun Jan 13 12:01:32 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/generators*: Reorganize RDoc generators.
-
-Sun Jan 13 11:41:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENCINDEX_EUC_JP, ENCINDEX_SJIS): removed.
-	  (rb_enc_init): EUC-JP and Shift_JIS are not builtin now.
-
-	* enc/Makefile.in: ditto.
-
-	* common.mk: ditto.
-
-	* ruby.c (proc_options): ditto.
-
-	* enc/shift_jis.c, enc/euc_jp.c: fixes for remove from builtin.
-
-Sun Jan 13 10:21:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_table): packed all enc_table stuff.
-
-Sun Jan 13 09:58:17 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_init): revert removing SJIS.
-
-	* enc/sjis.c: move to enc/shift_jis.c, to make encoding name equal to
-	  filename for convenience of loading lib.
-
-	* enc/shift_jis.c: moved from enc/sjis.c.
-
-	* common.mk: follows enc/shift_jis.c.
-
-	* enc/Makefile.in: ditto.
-
-Sun Jan 13 09:22:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (incs): includes encdb.h.
-
-Sun Jan 13 09:17:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (MV): use move instead of ren.  [ruby-Bugs-17019]
-
-Sun Jan 13 01:52:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/make_encdb.rb: should work on Ruby 1.8.  [ruby-dev:33069]
-
-	* common.mk (encdb.h): pass enc dir from outside to make_encdb.rb.
-
-Sun Jan 13 00:01:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/make_encdb.rb: added. search enc/*.c and make encoding database.
-
-	* regenc.h (ENC_REPLICATE, ENC_ALIAS): added for defining replica
-	  encoding and encoding alias.
-
-	* encoding.c (rb_enc_init): move alias definitions to enc/*.c.
-	  (rb_enc_find_index): search original of replica and alias when no
-	  encoding library.
-	  (rb_enc_name_list, rb_enc_aliases_enc_i, rb_enc_aliases_str_i,
-	   rb_enc_aliases, Encoding.name_list, Encoding.aliases): added.
-	  (Init_Encoding): init encdb.
-
-	* enc/ascii.c, enc/us_ascii.c, enc/euc_jp.c, enc/sjis.c:
-	  add replica encoding and encoding alias definition.
-
-	* common.mk (dist-clean-local): add rule for remove encdb.h.
-
-Sat Jan 12 18:27:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_define_alloc_func, rb_undef_alloc_func): should
-	  define/undef on a singleton class.  [ruby-core:09959]
-
-Sat Jan 12 12:44:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c: rdoc update.
-
-Sat Jan 12 12:01:49 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: tuning for performance.
-
-Sat Jan 12 11:29:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/test_proc.rb: fixed wrong expected result.  pointed
-	  out by Kornelius "murphy" Kalnbach <murphy AT rubychan.de> in
-	  [ruby-core:15022].
-
-Sat Jan 12 04:38:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (process_options): -e'script' is locale encoding by default.
-	  (load_file): ruby script from stdin is locale encoding by default.
-
-Sat Jan 12 04:31:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: fix bug: -m was -m0.
-
-Fri Jan 11 23:22:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (string.c): call rb_str_buf_append to update encoding of
-	  str1, even if str2 is empty.
-
-Fri Jan 11 20:20:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (proc_mark): needs to mark the receiver too.  a patch from
-	  Chris Heath <chris AT heathens.co.nz> in [ruby-core:14983].
-	  [ruby-core:14885]
-
-Fri Jan 11 18:28:49 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/usage.rb: Removed.
-
-	* lib/getoptlong.rb: Update example to not use lib/rdoc/usage.rb.
-
-Fri Jan 11 18:17:10 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/driver.rb (read_yaml): Follow namespace change
-	  [ruby-core:14964].
-
-Fri Jan 11 16:55:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_append): performance improvement.
-
-Fri Jan 11 12:35:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: moved broken syscall checks from process.c etc.
-
-	* defines.h (WORDS_BIGENDIAN): honor __BIG_ENDIAN__ than the result of
-	  configure.
-
-	* lib/rdoc/options.rb (check_diagram): more precise check, darwin
-	  is not Windows but mingw is on it.
-
-Fri Jan 11 09:59:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: update to r1.163.
-
-	* ext/nkf/nkf.c: ASCII's canonical name is US-ASCII.
-
-	* ext/nkf/lib/kconv.rb (Kconv.isjis): force_encoding('BINARY').
-
-Fri Jan 11 09:23:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (set_base_encoding): must use rb_enc_dummy_p.
-
-Fri Jan 11 06:13:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding_index, rb_to_encoding): disallow nil.
-	  [ruby-dev:33003]
-
-Fri Jan 11 01:08:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_mutex_unlock): proper error message for unlocking
-	  mutex that is not locked.  a patch from Yusuke ENDOH
-	  <mame at tsg.ne.jp> in [ruby-dev:33010].
-
-Thu Jan 10 18:00:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* prelude.rb (Mutex::synchronize): capture exception from unlock.
-	  [ruby-dev:32935]
-
-Thu Jan 10 10:15:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_encoding_set): IO.pipe("euc-jp", nil) should work as
-	  IO.pipe("euc-jp", nil).  [ruby-dev:33000]
-
-	* io.c (io_encoding_set): handle nil for v1.
-
-Thu Jan 10 02:41:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_binmode): should not alter encoding.  [ruby-dev:32918]
-
-	* io.c (io_read_encoding): need not to return ASCII-8BIT for
-	  binary IO.
-
-Wed Jan  9 22:04:17 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/mathn.rb (Prime#each): returns an enumerator if no block
-	  given. [ruby-dev:32815]
-
-Wed Jan  9 22:03:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_replicate): replica of dummy is a dummy.
-
-Wed Jan  9 20:55:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/e2mmap.rb (Exception2MessageMapper::Raise): define fail.
-	  [ruby-dev:32854]
-
-Wed Jan  9 20:35:42 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb: support X-Forwarded-* header fields.
-	  WEBrick::HTTPRequest#{host,port,request_uri} is derived having
-	  regards to X-Forwarded-Proto and X-Forwarded-Host.
-
-	* lib/webrick/httprequest.rb
-	  (WEBrick::HTTPRequest#server_name?): new method.
-	  (WEBrick::HTTPRequest#remote_ip?): new method.
-	  (WEBrick::HTTPRequest#ssl?): new method.
-
-Wed Jan  9 18:24:39 2008  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (Array#to_s): alias to join.
-
-	* golf_prelude.rb (FalseClass#to_s): return "".
-
-Wed Jan  9 16:59:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): fix self appending.
-
-Wed Jan  9 15:54:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): give priority command line encoding option
-	  to RUBYOPT, and enable -E option in RUBYOPT.
-
-	* ruby.c (load_file): deal with encoding option in shebang line if
-	  nothing in command line and RUBYOPT.
-
-Wed Jan  9 14:55:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (yycompile0): remove setting parser->enc because it is set
-	  in parser_prepare() by previous change of parser_prepare().
-
-Wed Jan  9 14:52:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat, rb_str_buf_append): deal with self
-	  appending.
-
-Wed Jan  9 14:44:57 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_prepare): set parser->enc from lex_input for ripper.
-
-Wed Jan  9 13:45:52 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (WEBrick::HTTPServer#start):
-	  :DoNotReverseLookup option had not been performed.
-
-Wed Jan  9 13:03:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): do not recalculate coderange
-	  value if it's given from outside.
-
-Wed Jan  9 08:42:01 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* enum.c:  Updating the documentation of Enumerable#zip to reflect
-	  the recent changes Matz made to the method.
-
-Wed Jan  9 01:35:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/Makefile.in (BUILTIN_ENCS): UTF-{16,32}{BE,LE} are not builtin.
-
-Tue Jan  8 23:55:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_init): UTF-{16,32}{BE,LE} are not builtin.
-
-Tue Jan  8 22:33:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c, Makefile.in, include/ruby/oniguruma.h,
-	  enc/Makefile.in: fix rules for UTF-{16,32}{BE,LE}.
-
-Tue Jan  8 20:02:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win{32,ce}/Makefile.sub: merged.
-
-Tue Jan  8 19:48:15 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/driver.rb: Speed up Marshal.load. Fix bug with nested
-	  classes' methods.
-
-Tue Jan  8 19:17:29 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/*: Clean up namespacing of RI's classes.
-
-Tue Jan  8 18:05:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* bin/ri, lib/rdoc/ri/*: Replace with Ryan Davis' cached ri.
-
-Tue Jan  8 17:32:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_zip): honor length of the receiver, not the
-	  shortest length.  [ruby-core:14738]
-
-	* enum.c (enum_zip): returns array not enumerator for no block
-	  form.  [ruby-core:14738]
-
-	* enumerator.c (next_ii): do not ignore multiple values yielded.
-
-	* array.c (rb_ary_zip): faster version without creating generators.
-
-Tue Jan  8 15:47:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/utf{16,32}_{be,le}.c: use &OnigEncodingName(*) instead of
-	  ONIG_ENCODING_*.
-
-Tue Jan  8 15:40:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regenc.c (onigenc_strlen_null, onigenc_str_bytelen_null): suppressed
-	  warnings.
-
-	* regenc.h, enc/unicode.c (onigenc_unicode_ctype_code_range): added
-	  encoding argument.
-
-	* enc/utf{16,32}_{be,le}.c: added init functions.
-
-	* enc/utf{16,32}_{be,le}.c: imported from Oniguruma 5.9.1.
-
-Tue Jan  8 15:03:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_gsub): avoid appending empty pre-match substr.
-
-Tue Jan  8 13:05:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_build_from_ary), iseq.c (iseq_load): fix for format change.
-
-Tue Jan  8 07:56:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_buf_append): fix append itself.
-
-Tue Jan  8 01:13:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (STR_ENC_GET): defined.  same as rb_enc_get without
-	  enc_capable.
-	  (coderange_scan): ASCII-8BIT test refined.
-	  (rb_enc_cr_str_buf_cat): new internal function to accumulate
-	  strings with encoding.
-	  (rb_enc_str_buf_cat): use rb_enc_cr_str_buf_cat.
-	  (rb_str_buf_append): ditto
-	  (str_gsub): use rb_str_buf_append.
-	  (rb_str_hash): use ENCODING_GET.
-	  (rb_str_comparable): ditto.
-	  (rb_str_cmp): compare encoding index, not rb_encoding address.
-
-Mon Jan  7 20:37:55 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb: external encoding of
-	  tempfiles is set to "ASCII-8BIT".
-
-Mon Jan  7 19:39:50 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/template.rb:  Use ERB instead of custom template language.
-
-	* lib/rdoc/generators/template/html/old_html.rb:  Remove.
-
-	* lib/rdoc/generators/template/*: Convert to ERB.
-
-Mon Jan  7 19:11:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (Init_String): sym_match arity spec was wrong.  a patch
-	  from Hiroyuki Iwatsuki <don at na.rim.or.jp> in [ruby-dev:32957].
-
-Mon Jan  7 18:10:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_gsub): move rb_enc_get(str) to out of loop.
-
-Mon Jan  7 15:52:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingType): new member
-	  ruby_encoding_index to avoid linear search in rb_enc_to_index.
-
-	* include/ruby/encoding.h (rb_enc_to_index): macro defined to use
-	  ruby_encoding_index.
-
-	* encoding.c (rb_enc_to_index): removed.
-	  (enc_register_at): initialize ruby_encoding_index member.
-
-Mon Jan  7 16:10:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/tokenstream.rb:  Namespace under RDoc.
-
-Mon Jan  7 16:06:09 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/dot.rb:  Namespace under RDoc.
-
-	* lib/rdoc/diagram.rb:  Clean up formatting.
-
-Mon Jan  7 15:51:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/options.rb:  Convert to OptionParser, clean up -h output,
-	  namespace under RDoc.
-	* lib/rdoc/*:  Namespace RDoc::Options.
-
-Mon Jan  7 15:42:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk, Makefile.in, */Makefile.sub (distclean-local): move
-	  removing rule of ext/ripper/y.output from common.mk to Makefiles
-	  that depend on platforms.
-
-Mon Jan  7 13:54:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_preprocess): fix fixed_enc condition.
-
-Mon Jan  7 11:51:49 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/generators/ri_generator.rb:  Merge documentation from the
-	  same class on output.  Fixes bug where documentation could
-	  disappear.
-
-	* lib/rdoc/options.rb:  Fix typo.
-
-	* lib/rdoc/generators/*: Clean up some namespacing and make RDoc
-	  consistent.
-
-Mon Jan  7 11:44:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_internal_get_index): extracted from
-	  rb_enc_get_index.
-	  (rb_enc_internal_set_index): extracted from rb_enc_associate_index
-
-	* include/ruby/encoding.h (ENCODING_SET): work over ENCODING_INLINE_MAX.
-	  (ENCODING_GET): ditto.
-	  (ENCODING_IS_ASCII8BIT): defined.
-	  (ENCODING_CODERANGE_SET): defined.
-
-	* re.c (rb_reg_fixed_encoding_p): use ENCODING_IS_ASCII8BIT.
-
-	* string.c (rb_enc_str_buf_cat): use ENCODING_IS_ASCII8BIT.
-
-	* parse.y (reg_fragment_setenc_gen): use ENCODING_IS_ASCII8BIT.
-
-	* marshal.c (has_ivars): use ENCODING_IS_ASCII8BIT.
-
-Mon Jan  7 02:14:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (coderange_scan): avoid rb_enc_to_index.
-	  (rb_enc_str_buf_cat): ditto.
-	  (str_cat_char): use rb_enc_str_buf_cat.
-	  (rb_str_inspect): ditto.
-
-Mon Jan  7 01:36:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (coderange_scan): optimize ASCII-8BIT string.
-	  (rb_enc_str_buf_cat): don't call coderange_scan if possible.
-
-Mon Jan  7 01:05:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/erb.rb (ERB::Revision): cut off locale dependent string in Date
-	  keyword.
-
-Mon Jan  7 00:48:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* Date keyword removed to avoid inclusion of locale dependent
-	  string.  [ruby-dev:32940]
-
-Sun Jan  6 21:14:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_initialize_str): forbid raw non ASCII character
-	  for ASCII-8BIT regexp in non ASCII-8BIT script.
-
-Sun Jan  6 18:19:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_enc_str_buf_cat): declared.
-
-	* string.c (coderange_scan): extracted from rb_enc_str_coderange.
-	  (rb_enc_str_coderange): use coderange_scan.
-	  (rb_str_shared_replace): copy encoding and coderange.
-	  (rb_enc_str_buf_cat): new function for linear complexity string
-	  accumulation with encoding.
-	  (rb_str_sub_bang): don't conflict substituted part and replacement.
-	  (str_gsub): use rb_enc_str_buf_cat.
-	  (rb_str_clear): clear coderange.
-
-	* re.c (rb_reg_regsub): use rb_enc_str_buf_cat.
-
-Sun Jan  6 17:55:44 2008  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* lib/securerandom.rb: Add Win32 support.
-
-Sun Jan  6 09:32:58 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: introduced some constants
-	  (for internal use) and aliases (minute and second).
-
-	* sample/cal.rb: trivial adjustments.
-
-Sun Jan  6 01:38:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_initialize_str): /\x80/n is not an error even if script
-	  encoding is EUC-JP.
-
-Sun Jan  6 00:48:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::DNS#each_address): get A record and then AAAA
-	  record. [ruby-dev:32925]
-
-Sat Jan  5 21:48:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm_insnhelper.c (vm_callee_setup_arg): it is not inlinable because
-	  alloca is used.
-
-Sat Jan  5 16:50:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_resize): copy if old data is not empty
-	  [ruby-core:14785]
-
-Sat Jan  5 13:04:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): no need for intermediate object.
-
-Sat Jan  5 11:48:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (Init_Encoding): alias csWindows31J to Windows-31J.
-	  IE6 accepts csWindows31J but Windows-31J.
-
-Sat Jan  5 02:21:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (rb_intern): memorize interned ID for constant
-	  string, using gcc's __builtin_constant_p and statement expression.
-
-Sat Jan  5 02:14:45 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (trnext): should enable backslash escape.
-
-Sat Jan  5 01:50:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_eval): move instance_eval and instance_exec to
-	  BasicObject.  [ruby-core:14747]
-
-	* lib/delegate.rb: should preserve new methods in BasicObject.
-
-Sat Jan  5 01:46:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): update according to the last API revert.
-
-Sat Jan  5 01:30:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h, re.c (rb_reg_new): keep interface same as
-	  1.8.  [ruby-core:14583]
-
-	* include/ruby/intern.h, re.c (rb_reg_new_str): renamed, and defines
-	  HAVE_RB_REG_NEW_STR macro to tell if it is available.
-
-	* include/ruby/encoding.h (rb_enc_reg_new): added.
-
-	* insns.def (toregexp), marshal.c (r_object0): use rb_reg_new_str().
-
-	* re.c (rb_reg_regcomp, rb_reg_s_union): ditto.
-
-Fri Jan  4 23:08:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_arg): use converted object.  [ruby-core:14759]
-
-Fri Jan  4 16:24:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/lib/digest/hmac.rb (Digest::HMAC#initialize): use
-	  String#bytesize to avoid test errors on EUC-JP environment.
-
-Fri Jan  4 14:00:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): check string encoding.  Oniguruma doesn't
-	  support invalid encoding.
-
-Fri Jan  4 10:22:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_search): avoid inner loop for reverse search.
-
-	* regexec.c: unset USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
-	  which is turned on since oniguruma 5.9.1.
-
-Fri Jan  4 02:53:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_jp.c: remove eucjp_ prefix.  breakpoint can be specified as
-	  euc_jp.c:mbc_enc_len.  avoid needless conflict by merge.
-
-	* enc/sjis.c: remove sjis_ prefix.
-
-	* enc/utf8.c: remove utf8_ prefix.
-
-	* enc/iso_8859_1.c: remove iso_8859_1_ prefix.
-
-	* enc/iso_8859_2.c: remove iso_8859_2_ prefix.
-
-	* enc/iso_8859_3.c: remove iso_8859_3_ prefix.
-
-	* enc/iso_8859_4.c: remove iso_8859_4_ prefix.
-
-	* enc/iso_8859_5.c: remove iso_8859_5_ prefix.
-
-	* enc/iso_8859_6.c: remove iso_8859_6_ prefix.
-
-	* enc/iso_8859_7.c: remove iso_8859_7_ prefix.
-
-	* enc/iso_8859_8.c: remove iso_8859_8_ prefix.
-
-	* enc/iso_8859_9.c: remove iso_8859_9_ prefix.
-
-	* enc/iso_8859_10.c: remove iso_8859_10_ prefix.
-
-	* enc/iso_8859_11.c: remove iso_8859_11_ prefix.
-
-	* enc/iso_8859_13.c: remove iso_8859_13_ prefix.
-
-	* enc/iso_8859_14.c: remove iso_8859_14_ prefix.
-
-	* enc/iso_8859_15.c: remove iso_8859_15_ prefix.
-
-	* enc/iso_8859_16.c: remove iso_8859_16_ prefix.
-
-Fri Jan  4 02:47:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_search): iterate onig_match for reverse mode.
-
-Fri Jan  4 01:20:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32.h: only VC6 needs extern "C++" for math.h.  [ruby-talk:285660]
-
-Fri Jan  4 00:54:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h: Oniguruma 5.9.1 merged.
-
-Fri Jan  4 00:20:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_ungetc): move data in buffer if it is required to store the
-	  argument.
-
-Thu Jan  3 21:56:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (st_strcasecmp): declared for STRCASECMP.
-	  (st_strncasecmp): declared for STRNCASECMP.
-
-Thu Jan  3 20:24:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_jump.c (rb_f_catch): Restore cfp if caught thrown object.
-
-Thu Jan  3 19:45:57 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_eval.rb, test_knownbug.rb: move a fixed test.
-
-Thu Jan  3 18:39:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c: (rb_tolower, rb_toupper): body was exchanged.
-
-Thu Jan  3 17:54:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* regenc.h (onigenc_ascii_is_code_ctype): put back.
-
-Thu Jan  3 17:33:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_isalnum): defined.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-
-	* include/ruby/ruby.h: don't include include/ruby/encoding.h.
-	  (rb_isascii): defined.
-	  (rb_isalnum): declared.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-	  (ISASCII): simplified.
-	  (ISPRINT): ditto.
-	  (ISSPACE): ditto.
-	  (ISUPPER): ditto.
-	  (ISLOWER): ditto.
-	  (ISALNUM): ditto.
-	  (ISALPHA): ditto.
-	  (ISDIGIT): ditto.
-	  (ISXDIGIT): ditto.
-	  (TOUPPER): ditto.
-	  (TOLOWER): ditto.
-
-	* include/ruby/encoding.h (rb_isascii): removed.
-	  (rb_isalnum): ditto.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-
-	* common.mk: dependency updated.
-
-Thu Jan  3 15:10:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_isascii): simplified.
-	  (rb_isalnum): call onigenc_ascii_is_code_ctype without indirect call.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-
-	* include/ruby/oniguruma.h (onigenc_ascii_is_code_ctype): declaration
-	  moved from regenc.h.
-
-Thu Jan  3 14:37:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (parser_magic_comment): use STRNCASECMP.
-	  (set_file_encoding): ditto.
-
-Thu Jan  3 11:44:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: don't mention an obsolete library, ParseDate.
-
-Thu Jan  3 11:28:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (fptr_finalize): clear errno first.  [ruby-talk:284492]
-
-Thu Jan  3 05:02:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/us_ascii.c: add us_ascii_ prefix for functions to ease
-	  setting breakpoint when debugging.
-
-	* enc/euc_jp.c: add eucjp_ prefix.
-
-	* enc/sjis.c: add sjis_ prefix.
-
-	* enc/iso_8859_1.c: add iso_8859_1_ prefix.
-
-	* enc/iso_8859_2.c: add iso_8859_2_ prefix.
-
-	* enc/iso_8859_3.c: add iso_8859_3_ prefix.
-
-	* enc/iso_8859_4.c: add iso_8859_4_ prefix.
-
-	* enc/iso_8859_5.c: add iso_8859_5_ prefix.
-
-	* enc/iso_8859_6.c: add iso_8859_6_ prefix.
-
-	* enc/iso_8859_7.c: add iso_8859_7_ prefix.
-
-Thu Jan  3 02:44:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (conv_digit): use ISDIGIT, ISLOWER and ISUPPER.
-
-Wed Jan  2 23:50:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* util.c (ruby_strtoul): "0x", "+" and "-" is not a valid integer.
-	  end of integer should be just after "0", the beginning, the
-	  beginning respectively.
-
-Wed Jan  2 15:23:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* util.c (ruby_strtoul): locale independent strtoul is implemented to
-	  avoid "i".to_i(36) cause 0 under tr_TR locale on Debian GNU/Linux
-	  4.0 (Etch).
-	  This is newly implemented, not a copy of missing/strtoul.c.
-
-	* include/ruby/ruby.h (ruby_strtoul): declared.
-	  (STRTOUL): defined to use ruby_strtoul.
-
-	* bignum.c, pack.c, ext/socket/socket.c: use STRTOUL.
-
-	* configure.in (strtoul): don't check.
-
-	* missing/strtoul.c: removed.
-
-	* include/ruby/missing.h (strtoul): removed.
-
-	* common.mk (strtoul.o): removed.
-
-	* LEGAL (missing/strtoul.c): removed.
-
-Wed Jan  2 14:41:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (strcasecmp.o): removed.
-	  (strncasecmp.o): removed.
-
-	* include/ruby/missing.h (strcasecmp): removed.
-	  (strncasecmp): removed.
-
-Wed Jan  2 11:34:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/strcasecmp.c: removed.  Ruby don't use locale dependent
-	  strcasecmp.
-
-	* missing/strncasecmp.c: ditto.
-
-	* configure.in: don't check strcasecmp and strncasecmp.
-
-	* LEGAL: missing/strcasecmp.c and missing/strncasecmp.c removed.
-
-Wed Jan  2 10:13:54 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* sample/time.rb: use Process.times instead of Time.times.
-
-Wed Jan  2 09:09:53 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* sample/goodfriday.rb: examples for date are enough.  retired.
-
-Wed Jan  2 08:58:54 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* sample/cal.rb: just updated with the newest version.
-
-Wed Jan  2 01:19:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/depend: dependency updated.
-
-Wed Jan  2 00:14:41 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/{nkf.c, utf8tbl.c}: Update nkf.
-
-	* ext/nkf/nkf.c: fix documents.
-
-	* ext/nkf/lib/kconv.rb: fix documents.
-	  (Kconv.is*): use valid_encoding?.
-	  (Kconv.isjis): defined.
-
-Tue Jan  1 23:17:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependency updated.
-
-Tue Jan  1 21:11:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_isascii): defined.
-	  (rb_isalnum): ditto.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-
-	* include/ruby/st.h (st_strcasecmp): declared.
-	  (st_strncasecmp): ditto.
-
-	* st.c (type_strcasehash): use st_strcasecmp instead of strcasecmp.
-	  (st_strcasecmp): defined.
-	  (st_strncasecmp): ditto.
-
-	* include/ruby/ruby.h: include include/ruby/encoding.h.
-	  (ISASCII): use rb_isascii.
-	  (ISPRINT): use rb_isprint.
-	  (ISSPACE): use rb_isspace.
-	  (ISUPPER): use rb_isupper.
-	  (ISLOWER): use rb_islower.
-	  (ISALNUM): use rb_isalnum.
-	  (ISALPHA): use rb_isalpha.
-	  (ISDIGIT): use rb_isdigit.
-	  (ISXDIGIT): use rb_isxdigit.
-	  (TOUPPER): defined.
-	  (TOLOWER): ditto.
-	  (STRCASECMP): ditto.
-	  (STRNCASECMP): ditto.
-
-	* dir.c, encoding.c, file.c, hash.c, process.c, ruby.c, time.c,
-	  transcode.c, ext/readline/readline.c: use locale insensitive
-	  functions.  [ruby-core:14662]
-
-Tue Jan  1 17:50:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): encoding spec is not allowed in binary mode.
-	  [ruby-dev:32913]
-
-Tue Jan  1 14:41:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml: 1.9 patch from Sam Ruby mentioned in his blog:
-	  <http://intertwingly.net/blog/2007/12/31/Porting-REXML-to-Ruby-1-9>
-	  [ruby-core:14639]
-
-Tue Jan  1 14:15:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_substr): offset movement bug.  a patch from
-	  Vincent Isambart <vincent.isambart at gmail.com> in
-	  [ruby-core:14647].  [ruby-core:14644]
-
-Tue Jan  1 01:29:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding): raises for non-nil, non-encoding,
-	  non-string object.  [ruby-core:14634]
-
-Tue Jan  1 01:04:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): rejects dummy encoding.
-
-Mon Dec 31 23:53:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options, process_options): delays finding encoding
-	  until load_path is set.
-
-Mon Dec 31 23:27:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_resize): embeds if ptr is null.  [ruby-dev:32819]
-
-Mon Dec 31 23:17:22 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpproxy.rb (WEBrick::HTTPProxyServer#proxy_service):
-	  call do_XXX which correspond with request method.
-	  (WEBrick::HTTPProxyServer#do_CONNECT,do_GET,do_POST,do_HEAD): added.
-
-	* test/webrick/test_httpproxy.rb: add test for WEBrick::HTTPProxyServer.
-
-Mon Dec 31 22:53:29 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread_pthread.c (native_sleep): timespec tv_sec may overflow on
-	  some platform.  a patch from zunda <zunda616e AT yahoo.co.jp> in
-	  [ruby-dev:32904].
-
-Mon Dec 31 19:35:20 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (IS_7BIT): removed.
-	  (single_byte_optimizable): new function to test optimizationability
-	  using single byte string.
-	  (str_strlen): use single_byte_optimizable instead of
-	  is_ascii_string.
-	  (str_nth): rename argument: asc -> singlebyte.
-	  (str_offset): ditto.
-	  (rb_str_substr): use single_byte_optimizable instead of IS_7BIT.
-	  (rb_str_index): ditto.
-	  (rb_str_rindex): ditto.
-	  (rb_str_splice): ditto.
-	  (rb_str_justify): ditto.
-
-Mon Dec 31 07:39:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* main.c, goruby.c (RUBY_MAIN_INIT): removed.
-
-	* goruby.c (goruby_run_node): run after ruby_init_loadpath() so that
-	  require works, and protect the call.
-
-Mon Dec 31 06:50:38 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: not use -I$(srcdir)/lib with $(MINIRUBY) for cross
-	  compiling.
-
-	* configure.in, {win,bcc}32/Makefile.sub (MINIRUBY): -I$(srcdir)/lib
-	  moved.
-
-Mon Dec 31 06:08:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_sprintf, rb_enc_vsprintf): prototyped.
-
-	* sprintf.c (rb_enc_sprintf, rb_enc_vsprintf): new functions to format
-	  arguments with encoding.
-
-Sun Dec 30 23:48:00 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (String#/): define / as split, as association of
-	  Array#*.
-
-Sun Dec 30 23:19:06 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (@@golf_hash): for performance improvement.
-
-Sun Dec 30 22:44:50 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (_valid_time?): I'm not sure to recommend such an
-	  expression.  but anyway it is acceptable now.  [ruby-core:14580]
-
-Sun Dec 30 21:54:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (program, yycompile0): too early to drop lex_lastline in
-	  rules.
-
-Sun Dec 30 19:23:23 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bootstraptest/test_knownbug.rb: support DOSISH.
-
-Sun Dec 30 17:43:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): registered rb_encoding differs from
-	  ONIG_ENCODINGs.
-
-Sun Dec 30 13:56:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (program): clear input strings after all process.
-
-	* parse.y (parser_nextc, parser_yylex): should not drop lex_lastline
-	  while lex_p is valid.  [ruby-dev:32896]
-
-Sun Dec 30 10:54:49 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: rm largefile.h.
-
-	* common.mk: clean golf, conf*, preludes, and so on.
-
-	* enc/depend: silent and ignore error for rm.
-
-	* enc/Makefile.in: should define prefix and exec_prefix.
-
-Sun Dec 30 06:31:11 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (Init_encoding): register Windows-31J and its alias.
-	  [ruby-dev:32843]
-
-	* ruby.c (proc_options): -Ks options means Windows-31J, not Shift_JIS.
-
-Sun Dec 30 06:27:38 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (depend_rules): need to convert `/' to `\' for windows
-	  native commands.
-
-Sun Dec 30 01:43:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (DLDFLAGS): like as extensions.  [ruby-core:14567]
-
-Sat Dec 29 23:48:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fflush): don't retry when wbuf modified by other threads.
-
-Sat Dec 29 22:44:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): returns the given string itself if nothing
-	  changed.
-
-	* string.c (rb_str_sub_bang): keeps code-range as possible.
-
-	* string.c (str_gsub): adjusts code-range.  [ruby-core:14566]
-
-Sat Dec 29 21:54:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clean, distclean, realclean): should include clean-enc
-	  and others.  [ruby-dev:32887]
-
-Sat Dec 29 13:29:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/test_knownbug.rb: add a test reported by
-	  Kazuhiro NISHIYAMA.  [ruby-dev:32819].
-	  add a test reported by Frederick Cheung.  [ruby-core:14556].
-
-	* test/ruby/test_m17n.rb (test_gsub): add a test reported by
-	  Sam Ruby.  [ruby-core:14566]
-
-Sat Dec 29 04:46:58 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert_throws):
-	  throw won't raise NameError nor ThreadError but ArgumentError on 1.9.
-	  (Test::Unit::Assertions#assert_not_throws): ditto.
-
-	* test/testunit/test_assertions.rb: add assertions for throwing some
-	  objects other than Symbol.
-
-Sat Dec 29 03:10:12 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_unread): fix typo.
-
-Sat Dec 29 02:18:45 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_unread): adhoc workaround for non-binary mode of some DOSish
-	  platforms. this is not perfect and safety, but works with most cases.
-
-Fri Dec 28 23:53:18 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ext/strscan/strscan.c (str_new): new function for allocate an string
-	  with encoding propagation.
-	  (extract_range): use str_new.
-	  (extract_beg_len): ditto.
-	  (strscan_peek): ditto.
-	  (strscan_rest): ditto.
-
-Fri Dec 28 20:18:42 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (Object.say): derived from Perl 5.10.
-
-Fri Dec 28 19:39:34 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_locale_encoding): should check return value from
-	  rb_locale_charmap().
-
-	* ruby.c (locale_encoding): removed.
-
-	* ruby.c (process_options): use rb_locale_encoding() instead of
-	  locale_encoding().
-
-	* ext/readline/readline.c (readline_readline): use locale encoding
-	  instead of input IO's encoding. [ruby-dev:32872]
-
-Fri Dec 28 19:29:07 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline, readline_s_set_input):
-	  use mReadline directly because self is not always same.
-
-Fri Dec 28 19:11:28 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_locale_encoding): defined.
-
-	* include/ruby/encoding.h (rb_locale_encoding): declared.
-
-Fri Dec 28 18:45:29 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline): set encoding to result.
-
-	* ext/readline/readline.c (readline_s_set_input, Init_readline): save
-	  input IO to hidden instance variable.
-
-Fri Dec 28 01:55:04 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (transcode_dispatch): reverted some of the changes
-	  in r14746.
-
-	* transcode.c, enc/trans/single_byte.c: Added conversions to/from
-	  US-ASCII and ASCII-8BIT (using data tables).
-
-	* enc/trans/single_byte.c: Some spacing/ordering changes due to
-	  automatic data file generation.
-
-	* transcode_data.h, transcode.c: Preliminary code for using
-	  micro-conversion functions.
-
-	* test/ruby/test_transcode.rb: Added some tests for US-ASCII and
-	  ASCII-8BIT conversions.
-
-Fri Dec 28 17:33:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (make_time_t): verify mktime and timegm result.
-
-Fri Dec 28 16:36:33 2007  NARUSE, Yui  <naruse@airemix.com>
-
-	* lib/resolv.rb (Resolv::DNS#each_address): now returns IPv6 address.
-
-Fri Dec 28 16:10:00 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/dot/dot.rb: Move to lib/rdoc/dot.rb. Fix namespacing.
-
-	* lib/rdoc/diagram.rb: Update for 1.9.
-
-Fri Dec 28 15:38:29 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup/sample/: Move to sample/rdoc/markup directory.
-
-Fri Dec 28 15:15:12 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/irb/completion.rb: Remove garbage ("X=1").
-
-Fri Dec 28 15:12:05 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc, test/rdoc: Move RDoc tests out of lib/.
-
-Fri Dec 28 15:10:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (set_base_encoding, enc_base_encoding): renamed
-	  based_encoding as base_encoding.
-
-Fri Dec 28 13:57:49 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Integer#each): use alias simply.
-
-Fri Dec 28 13:45:21 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* golf_prelude.rb (Object.const_missing): No need to delegate to
-	  superclass.  Just raise a NameError when none matches.
-
-Fri Dec 28 13:18:47 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb: 0.2.2 -> 0.2.3.
-
-	* lib/rss/parser.rb, test/rss/test_parser.rb: supported "-" in tag name.
-	  Reported by Ray Chen. Thanks.
-
-Fri Dec 28 13:07:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (os_obj_of): returns an enumerator if no block given.  based on
-	  a patch from Yugui <yugui AT yugui.sakura.ne.jp>.  [ruby-dev:32828]
-
-Fri Dec 28 11:46:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/ytab.sed: skip yydestruct hack unless yymsg exists, for bison
-	  1.8 series.  [ruby-dev:32825]
-
-Fri Dec 28 11:39:02 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Object.quine): need to join because SCRIPT_LINES__[]
-	  returns an array of lines.
-
-Fri Dec 28 11:16:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Object.quine): get the script itself.
-
-Fri Dec 28 10:06:54 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* golf_prelude.rb (Object.const_missing): Auto-complete constants.
-
-Fri Dec 28 01:55:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_dispatch): allows transcoding from/to
-	  ASCII-8BIT.
-
-Fri Dec 28 01:47:25 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Integer): Integer is now enumerable on goruby.
-
-Fri Dec 28 01:27:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rdoc/rdoc.rb (parse_files): don't depend on the default external
-	  encoding.
-
-Fri Dec 28 00:01:57 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (golf_prelude.c): use MINIRUBY instead of BASERUBY because
-	  tool/compile_prelude.rb requires rbconfig.rb.
-
-Thu Dec 27 23:56:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: should not use the libraries under the source directory
-	  at cross compiling.
-
-Thu Dec 27 23:43:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (EXTOBJS): uses ruby.rc always for other than
-	  rubyw.exe.
-
-Thu Dec 27 22:31:37 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rubygems/commands/update_command.rb (do_rubygems_update): use
-	  portable and safely ENV operation. reported in
-	  <http://slashdot.jp/developers/comments.pl?sid=384937&cid=1273085>.
-
-Thu Dec 27 21:47:04 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* mkconfig.rb (prefix): archdir is "1.9.0", not "1.9". reported in
-	  <http://slashdot.jp/developers/comments.pl?sid=384937&cid=1273085>.
-
-Thu Dec 27 17:57:30 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y, transcode_data.h, transcode.c, lib/weakref.rb,
-	  lib/irb/ruby-lex.rb, lib/irb/lc/error.rb, enc/trans/japanese.c:
-	  change "illegal" to "invalid" in a context which doesn't against
-	  a law.
-
-Thu Dec 27 16:37:06 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_union): show encodings in error message.
-
-Thu Dec 27 15:25:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_codelen): show codepoint in error message.
-
-	* include/ruby/encoding.h (rb_enc_codelen): comment it returns
-	  positive integer.
-
-	* string.c (rb_str_concat): rb_enc_codelen doesn't return 0.
-
-Thu Dec 27 15:18:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_codelen): error message refined.
-
-Thu Dec 27 15:11:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_check): show encodings in error message.
-
-Thu Dec 27 15:02:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_casecmp): fixed using a wrong variable.
-	  [ruby-list:44402]
-
-Thu Dec 27 14:34:38 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fflush): checks wbuf modification by other threads.
-	  not perfect.  it need locks.
-
-Thu Dec 27 10:44:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: a patch to support IRIX from Andrew
-	  Thompson <andrew@hijacked.us> in [ruby-core:14447].
-
-Thu Dec 27 02:25:45 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): retry to create file if Errno::EACCES
-	  occurs. this is a workaround for mswin32.
-
-Wed Dec 26 22:47:31 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::DNS::Name.==): fix for other is array of
-	  Resolv::DNS::Label::Str.
-
-	* lib/resolv.rb (Resolv::DNS::MessageEncoder#put_label): String#string
-	  is not defined, so replace to_s.
-
-	* lib/resolv.rb (Resolv::IPv6#to_name): ip6.int is obsoleted by
-	  ip6.arpa.
-
-
-Wed Dec 26 21:27:02 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_xmlschema): some improvements.
-
-	* lib/date/format.rb (_parse): a new hint compfunc. [experimental]
-
-Wed Dec 26 17:31:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fflush): check closed fptr after rb_write_internal to avoid
-	  SEGV on MacOS X.
-
-Wed Dec 26 16:10:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (Init_String): defines chars method.
-
-Wed Dec 26 14:38:43 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: install goruby if exists.
-
-Wed Dec 26 13:55:02 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Cleaned up some code with Ruby 1.9 idioms.
-
-Wed Dec 26 13:29:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (tmpbuf): use rb_str_tmp_new().
-
-Wed Dec 26 00:57:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/ext/generator/generator.c (Init_generator): requires
-	  json/common.rb for GeneratorError, when static linked.  a patch from
-	  Kenta Murata <muraken AT gmail.com> in [ruby-dev:32789].
-
-Tue Dec 25 23:33:55 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* development version 1.9.0 released.
-
-Tue Dec 25 23:25:29 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/node.rb (REXML::Node::indent): should initialize rv
-	  variable.  a patch from Tadayoshi Funaba <tadf AT dotrb.org> in
-	  [ruby-dev:32783].
-
-Tue Dec 25 23:16:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): encoding option in shebang and RUBYOPT did not
-	  work, do not store alloca()ed string in a parent scope struct.
-
-Tue Dec 25 22:56:52 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): keep this file.
-
-Tue Dec 25 22:55:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (TIMEZONE_VOID): typo.
-
-Tue Dec 25 22:45:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns2vm.rb: add encoding option to shebang.
-
-Tue Dec 25 22:13:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/pending.rb: add pending issue.
-
-Tue Dec 25 22:12:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: remove Thread.critical(=).
-
-Tue Dec 25 21:44:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: add version number.
-
-Tue Dec 25 21:32:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix stack consistency error
-	  (break is compiled to throw instead of jump insn).
-	  these problems are reported by Yusuke ENDOH <mame AT tsg.ne.jp>
-
-	* bootstraptest/test_knownbug.rb, test_syntax.rb: move fixed test.
-
-Tue Dec 25 21:32:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (struct parser_params): make parser_ruby_sourcefile common
-	  field.  it is used by node_newnode.
-	  new field parser_ruby_sourcefile_string for ripper.
-	  (parser_initialize): initialize parser_ruby_sourcefile in ripper.
-	  (ripper_initialize): initialize parser_ruby_sourcefile_string.
-
-Tue Dec 25 21:26:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c): depends on tool/ytab.sed.
-
-	* tool/ytab.sed: hack for bison 2.1.
-
-Tue Dec 25 20:24:58 2007  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_ssl.c: Only show a warning if the default
-	  DH callback is actually used.
-
-	* ext/openssl/ossl_rand.c: New method: random_add().
-
-Tue Dec 25 20:24:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: argument check, and cleanup exported directory.
-
-Tue Dec 25 20:07:13 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* tool/make-snapshot: more portable.
-
-Tue Dec 25 19:01:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.h (rb_enc_mbc_to_codepoint): wrapper for
-	  ONIGENC_MBC_TO_CODE().
-
-	* string.c (rb_str_succ): deal with invalid sequence as binary.
-
-Tue Dec 25 18:40:46 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c: all methods need $SAFE < 1.
-
-	 vm.c: comment out debug functions.
-
-Tue Dec 25 18:37:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (appendline): move RS comparison to rb_io_getline_1().
-
-Tue Dec 25 18:27:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_each_line): don't call rb_enc_codepoint with empty
-	  string.
-
-Tue Dec 25 18:06:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_inspect): don't call rb_enc_codepoint with empty
-	  string.  fix '#'.inspect.
-
-	* encoding.c (rb_enc_codepoint): raise on empty string.
-
-Tue Dec 25 17:48:28 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm.c (rb_frame_method_id_and_class): new function to get the
-	  method id and class of the current frame.
-
-Tue Dec 25 17:32:04 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb (create_makefile): Add a missing dependency on the
-	  target directory for each .rb file.  This will hopefully fix
-	  parallel make (-jN).  Tested on FreeBSD.
-
-Tue Dec 25 16:51:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_{from,to}_{SHIFT_JIS,EUC_JP}): inversed
-	  from_encoding and to_encoding.
-
-Tue Dec 25 16:41:57 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (h): add new method for all golfers.
-
-Tue Dec 25 16:37:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_to_EUC_JP): fixed typo.
-
-Tue Dec 25 16:34:58 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/depend: add dependencies. [ruby-dev:32760]
-
-Tue Dec 25 16:26:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h, thread.c: rename is_ruby_native_thread() to
-	  ruby_native_thread_p().
-
-	* ext/tk/tcltklib.c: apply it.
-
-Tue Dec 25 16:15:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clean-enc): clean encoding objects.
-
-Tue Dec 25 16:04:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, goruby.c, golf_prelude.rb: for golfers.
-
-	* main.c (main): hook for embedding applications.
-
-	* tool/compile_prelude.rb: can change initialize function name.
-
-Tue Dec 25 15:59:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register): do not use based_encoding to check if
-	  dummy encoding.
-
-Tue Dec 25 15:55:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): fix for string with non-alphanumeric chars.
-
-Tue Dec 25 15:42:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_external_encoding): should return nil for
-	  pass-through write IO.  [ruby-dev:32740]
-
-Tue Dec 25 15:24:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (appendline): initialize rslen to 1 if rsptr is 0.
-	  rslen is the length of the delimiter.
-	  if only delim is given, it should be 1.
-	  [ruby-dev:32746]
-
-Tue Dec 25 15:21:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_dispatch): fix for multistep transcode.
-
-Tue Dec 25 15:07:51 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/trans/single_byte.c (Init_single_byte): renamed.
-
-Tue Dec 25 15:00:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_yield): when multiple values yielded from #each
-	  pack them into an array.  [ruby-dev:32708]
-
-	* enum.c: all method but all?, any?, one? and none? passed packed
-	  multiple values to the block.
-
-	* enum.c (collect_all): should pack all values.  [ruby-core:14410]
-
-Tue Dec 25 14:57:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (COMMONOBJS): transcode_data_*.c moved under enc/trans.
-
-	* transcode_data.h (rb_transcoding, rb_transcoder): prefixed.
-
-	* transcode.c (rb_register_transcoder, rb_declare_transcoder): split
-	  declaration and registration.  [ruby-dev:32704]
-
-	* transcode.c (transcode_dispatch): autoload pre-declared transcoder.
-
-	* transcode.c (str_transcode): use rb_define_dummy_encoding().
-
-	* transcode.c (Init_transcode): initialize transcoder tables.
-
-	* enc/trans/single_byte.c, enc/trans/japanese.c: moved from top.
-
-Tue Dec 25 14:20:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mkmf.rb (map_dir): should generate path including $top_srcdir.
-
-Tue Dec 25 14:09:16 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Fixed test failures caused by changes to Ruby.
-
-	* test/csv/tc_serialization, test/csv/tc_csv_parsing, test/csv/tc_features:
-	  Fixed test failures caused by changes to Ruby.
-
-Tue Dec 25 14:11:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_encoding_set): missing return type.
-
-Tue Dec 25 14:03:48 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* test/rinda/test_rinda.rb (MockClock#{_forward, forward, sleep}):
-	  Change default value of n as @reso from nil.  If default value is
-	  nil, n.+ is not defined.
-
-Tue Dec 25 13:54:01 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io_m17n.rb (test_pipe): fixed.
-	  [ruby-dev:32743]
-
-Tue Dec 25 13:44:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_wait_fd_rw): should check EBADF on select().
-
-Tue Dec 25 13:30:03 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c, thread_pthread.h, thread_win32.c,
-	  thread_win32.c: make some functions static functions.
-	  a patch from Tadashi Saito <shiba AT mail2.accsnet.ne.jp>
-	  in [ruby-core:14407]
-
-Tue Dec 25 13:23:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io_m17n.rb (test_write_noenc): don't mix text and
-	  binary mode.  [ruby-dev:32743]
-
-Tue Dec 25 13:13:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* README.EXT.ja, dir.c, eval.c, eval_intern.h, lex.c.src,
-	  lex.c.blt, keywords, load.c, thread.c: more ANSI'ize.
-	  a patch from Tadashi Saito <shiba AT mail2.accsnet.ne.jp>
-	  in [ruby-dev:32725]
-
-Tue Dec 25 13:07:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h, thread.c, cont.c: add RUBY_VM_SET_INTERRUPT(),
-	  RUBY_VM_SET_TIMER_INTERRUPT(), RUBY_VM_INTERRUPTED().
-
-	* thread.c, thread_pthread.c, thread_win32.c: fix to ignore time slice
-	  event until sleep.
-
-	* bootstraptest/test_thread.rb: add a test for time limited join test.
-
-Tue Dec 25 12:42:59 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (Init_VM): remove unused code.
-	  [ruby-dev:32732]
-
-Tue Dec 25 12:32:32 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: Moving a static counter from inside register_transcoder()
-	  and register_functional_transcoder() to outside the functions, renaming
-	  from n to next_transcoder_position. Fixes 3) in [ruby-dev:32715].
-
-Tue Dec 25 12:22:17 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* sample/from.rb: follow Ruby 1.9 libraries.
-
-Tue Dec 25 12:21:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (method_inspect): preserve encoding of the method name.
-
-Tue Dec 25 12:07:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BASERUBY): delayed error until BASERUBY is used.
-
-Tue Dec 25 11:48:35 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/README: removed obsoleted files: dbmtest.rb,
-	  getopts.test, mrshtest.rb, regx.rb.
-
-Tue Dec 25 11:45:34 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Import the FasterCSV source as the new CSV class.
-
-	* test/csv/*:  Added all applicable tests from FasterCSV.
-
-Tue Dec 25 11:33:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (report_bug): uses ruby_description.
-
-Tue Dec 25 11:20:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix stack consistency error.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>  [ruby-dev:32720]
-
-	* bootstraptest/test_syntax.rb: add 2 tests for above.
-
-Tue Dec 25 11:14:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c, vm_core.h: comment out unused fields.
-
-Tue Dec 25 11:02:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: check frame is FINAL when creating env.
-	  [ruby-core:14395]
-
-	* bootstraptest/test_block.rb: add a test for above.
-
-Tue Dec 25 09:12:13 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/:  Enable RDoc debugging only with $DEBUG_RDOC.
-
-Tue Dec 25 08:37:43 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb, test/csv/test_csv.rb:  Removed in preparation for
-	  FasterCSV code import.
-
-Tue Dec 25 08:27:43 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems.rb:  Fix test failures.
-
-	* test/rubygems/test_gem.rb:  Fix test failure.
-
-Tue Dec 25 06:23:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb, test_literal.rb: move fixed test.
-
-Tue Dec 25 06:19:04 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* sample/biorhythm.rb: follow Ruby 1.9 libraries.
-
-Tue Dec 25 06:15:01 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: add dummy toplevel frame.
-
-Tue Dec 25 05:44:56 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/http.rb:  Fix uninitialized variable warning.
-	  [ruby-talk:284582]
-
-	* lib/irb/output-method.rb:  Remove unused #foo method.
-	  [ruby-talk:284582]
-
-Tue Dec 25 05:24:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile): clear local table if node == 0.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>  [ruby-dev:32530]
-
-	* vm.c: clear VM stack.
-
-Tue Dec 25 04:23:32 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (rb_id2str): fill klass of returned string as rb_cString.
-	  some strings are allocated before rb_cString is created.
-	  This prevents a "called on terminated object" error by
-	  ObjectSpace.each_object(Module) {|m| p m.name }.
-
-Tue Dec 25 03:51:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix stack consistency bug.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>
-
-Tue Dec 25 03:19:47 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* tool/make-snapshot: must create configure and lex.c.
-
-Tue Dec 25 03:16:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_pipe): now takes up to two arguments.  allow its
-	  external/internal encoding by Encoding objects.
-
-	* io.c (rb_io_set_encoding): new method to set encoding of the IO.
-
-	* io.c (argf_set_encoding): ditto.
-
-Tue Dec 25 03:08:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* pack.c (pack_pack): use NUM2LONG instead of NUM2INT.
-
-	* numeric.c (fix_lshift, fix_aref): use SIZEOF_LONG instead of
-	  SIZEOF_VALUE.
-
-	* bignum.c (big2ulong, rb_big_aref): ditto.
-
-Tue Dec 25 02:55:26 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/rexml/element.rb (REXML::Elements#each): yield in each
-	  should be called with one parameter. [ruby-dev:32708]
-
-Tue Dec 25 02:15:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): add a "pop" insn after break
-	  to fix stack consistency error.  [ruby-core:14385]
-
-	* bootstraptest/test_syntax.rb: add tests for above.
-
-	* bootstraptest/test_knownbug.rb: remove fixed bug.
-
-Tue Dec 25 01:54:36 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* id.c (Init_id): remove several unused symbols. [ruby-core:14362]
-
-	* compile.c (iseq_specialized_instruction): do not use
-	  VM_CALL_SEND_BANG flag any longer.
-
-Tue Dec 25 01:42:41 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rdoc/rdoc.rb (parse_files): interpret coding cookie.
-
-Tue Dec 25 01:38:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (method_name): preserve Symbol's encoding.
-
-	* numeric.c (fix_id2name): ditto.
-
-Tue Dec 25 01:19:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_left_char_head): new utility macro.
-
-	* include/ruby/encoding.h (rb_enc_right_char_head): ditto.
-
-	* io.c (appendline): does multibyte RS search in the function.
-
-	* io.c (prepare_getline_args): RS may be nil.
-
-	* io.c (rb_io_getc): should process character based on external
-	  encoding, when transcoding required.
-
-Tue Dec 25 01:07:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/irb/output-method.rb: translate a comment to English to
-	  avoid mix of EUC-JP comment and UTF-8 Date keyword.
-	  svn substitute Date keyword with UTF-8 weekday on UTF-8 locale.
-
-Tue Dec 25 00:27:28 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservley/cgihandler.rb
-	  (WEBrick::HTTPServlet::CGIHandler#do_GET): m17nized.
-
-Mon Dec 24 23:55:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/cgi.rb (CGI::escape): m17nized.
-	  (CGI::unescape): ditto.
-	  (CGI::escapeHTML): ditto.
-	  (CGI::unescapeHTML): ditto.
-
-Mon Dec 24 23:32:24 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode_data_japanese.c (select_iso_2022_mode): '\e' is not valid.
-
-Mon Dec 24 23:13:09 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/rdoc/diagram.rb (RDoc::Diagram#initialize): use fileuitls
-	  instead of ftools.
-
-Mon Dec 24 23:04:57 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/ftools.rb: removed obsoleted lib.  use fileutils instead (by eban).
-
-	* lib/rdoc/rdoc.rb, lib/rdoc/generators/*, lib/rake.rb: let it use
-	  fileutils instead of ftools.
-
-	* lib/shell/command-processor.rb: removed unused references to ftools.
-
-	* lib/parsedate.rb: removed.  see [ruby-core:12535], [ruby-dev:31969].
-
-	* lib/README: updated.
-
-Mon Dec 24 23:01:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI::Buffer): use Meta ===.  [ruby-core:14295]
-
-Mon Dec 24 22:46:42 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* transcode.c: register_functional_transcoder() added.
-	  (init_transcoder_table(: register ISO-2022-JP.
-	  (str_transcode): add preprocessor and postprocessor.
-
-	* transcode_data_japanese.c: add ISO-2022-JP support.
-
-	* transcode_data.h: moved transcoder and transcoding definition from
-	  transcode.c.
-
-Mon Dec 24 20:29:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/io/nonblock/test_flush.rb: fix test for 1.9.
-
-Mon Dec 24 20:23:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/rinda/test_rinda.rb: revert last commit because this test seems
-	  to have timing problem to halt all tests.
-
-Mon Dec 24 20:18:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/rinda/test_rinda.rb: enable rinda test.
-
-Mon Dec 24 20:16:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* instruby.rb: fix rdoc install dir.
-
-Mon Dec 24 18:37:32 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): show regexp encoding in the error message.
-
-Mon Dec 24 18:23:32 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_exc_raise): ANSI style.
-	  (rb_exc_fatal): ditto.
-	  (rb_raise_jump): ditto.
-	  (rb_jump_tag): ditto.
-	  (rb_block_given_p): ditto.
-
-	* variable.c (original_module): ditto.
-
-Mon Dec 24 18:05:09 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (Init_ISeq): disable ISeq.load() because there is no verifier.
-
-	* iseq.c, proc.c: add ISeq.disasm(method).
-
-Mon Dec 24 18:06:03 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval_method.c (Init_eval_method): extracted from Init_eval
-	  for rdoc to find rb_mod_remove_method, rb_mod_undef_method and
-	  rb_mod_alias_method.
-
-	* eval.c (Init_eval): call Init_eval_method.
-
-Mon Dec 24 17:59:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (load_lock): reverted.
-
-	* thread.c (rb_barrier_wait): check for recursive wait.
-
-Mon Dec 24 17:50:54 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (function_call_may_return_twice_jmp_buf): removed.
-	  (function_call_may_return_twice_false): removed.
-	  [ruby-core:14335]
-
-Mon Dec 24 17:40:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (node_name.inc, miniprelude.c, prelude.c): nmake cannot
-	  handle target vpath in other than implicit rules.
-
-Mon Dec 24 17:20:34 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/{mailread.rb,getopts.rb,parsearg.rb}: removed.
-	  see [ruby-core:12535], [ruby-dev:31969].
-
-Mon Dec 24 17:12:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h, random.c, array.c:
-	  change exported name.
-	  genrand_int32 -> rb_genrand_int32.
-	  genrand_real -> rb_genrand_real.
-	  [ruby-core:14335]
-
-Mon Dec 24 17:06:37 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* {lib,test}/{soap,wsdl,xsd}: removed soap4r along to the discussion
-	  at ruby-core and ruby-dev.  see [ruby-core:12535], [ruby-dev:31969].
-
-Mon Dec 24 17:06:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_feature_p): returns loading path name too.
-
-	* load.c (search_required): returns path too if feature is being
-	  loaded.  [ruby-dev:32048]  [TODO: refactoring]
-
-Mon Dec 24 16:29:12 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* sample/openssl: reviewed and remove dependency on getopts.rb.
-
-Mon Dec 24 16:18:57 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* mkconfig.rb: add teeny to CONFIG['ruby_version'].
-
-Mon Dec 24 15:55:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/compile.rb, getrev.rb, runruby.rb: remove unused tools.
-
-Mon Dec 24 15:42:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, cygwin/GNUmakefile.in, */Makefile.sub,
-	  djgpp/config.hin.: version dependent directory names now contain
-	  teeny.
-
-Mon Dec 24 15:29:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/serb.rb: removed.
-
-Mon Dec 24 13:55:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_proc_new), vm.c (invoke_block): removed u3.state magic.
-	  [ruby-core:14310]
-
-	* test/ruby/test_symbol.rb (test_to_proc): a test from Frederick
-	  Cheung <frederick.cheung AT gmail.com>.
-
-Mon Dec 24 13:43:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_atfork): should not leave living_threads
-	  referring freed table while allocating new table.
-
-Mon Dec 24 12:49:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in, lib/mkmf.rb, */Makefile.sub: specify
-	  compiled output file name explicitly.
-
-	* enc/Makefile.in, enc/depend: now makes compiler to put generated
-	  files under directories corresponding to the each source.
-	  enc/trans supported.
-
-	* enc/make_encmake.rb: evaluates depend file before Makefile.in so
-	  that the former can influence to CONFIG.
-
-Mon Dec 24 12:35:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win{32,ce}/Makefile.sub (MFLAGS): defaulted to -l.
-
-Mon Dec 24 12:08:10 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* /, ext/:  Add svn:ignore for OS X Xcode 3's conftest.dSYM
-	  directories.
-
-Mon Dec 24 11:56:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: should not pass MAKEFLAGS to recursive make.
-	  + normal make: MFLAGS are set and command line options and macros
-	    are all passed silently.
-	  + GNU make: ditto, and all options and macros in MAKEFLAGS are in
-	    effect.
-	  + nmake: MFLAGS is not set and MAKEFLAGS has only options without
-	    hyphen, no macros exist in any variables.
-	  + Borland make: ditto, and command line macros cannot override
-	    macros in makefile, so passing them is vain.
-
-	* {bcc32,win{32,ce}}/Makefile.sub (SET_MAKE): set MFLAGS which is not
-	  set by default, to get rid of chaotic situation of MFLAGS/MAKEFLAGS.
-
-Mon Dec 24 11:32:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): fixed to keep transitivity.
-	  [ruby-dev:32693]
-
-Mon Dec 24 11:20:31 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/ri_options.rb:  Fix display of GEMDIRS, make command
-	  examples match ri's name.
-
-	* lib/rdoc/ri/ri_paths.rb:  Only allow latest ri dirs in ri output.
-
-Mon Dec 24 10:49:04 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/uri/mailto.rb, lib/uri/common.rb:  Fix Regexp warnings.  Patch
-	  #16524 from Kornelius Kalnbach, [ruby-core:14302].
-
-Mon Dec 24 10:37:38 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb:  Remove methods from Gem, not QuickLoader, to fix
-	  warnings.
-
-Mon Dec 24 09:45:45 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c, transcode_data_one_byte.c, transcode_data_japanese.c:
-	  added rb_ prefix to external data symbols.
-
-Mon Dec 24 05:32:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): updated documentation.  a patch from Keita
-	  Yamaguchi <keita.yamaguchi AT gmail.com> in [ruby-dev:32686].
-
-	* README.EXT: updated.  a patch from Tadashi Saito
-	  <shiba AT mail2.accsnet.ne.jp> in [ruby-core:14328].
-
-	* array.c (rb_ary_at): updated documentation. a patch from Tadashi
-	  Saito <shiba AT mail2.accsnet.ne.jp> in [ruby-core:14330].
-
-Mon Dec 24 05:13:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): should associate new encoding if modified.
-
-Mon Dec 24 04:04:12 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/net/http/test_https.rb: should rescue LoadError.
-
-Mon Dec 24 03:57:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c, vm.h: fix to support sparc machine.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>
-
-Mon Dec 24 03:35:19 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: remove additional "-".
-
-Mon Dec 24 02:59:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_check_readable): should not fill fptr->enc always.
-	  read-write IO (e.g. socket) does not work.  [ruby-dev:32685]
-
-	* io.c (io_read_encoding): retrieve reading encoding.
-
-	* io.c (prepare_getline_args): convert RS to external encoding.
-
-	* string.c (str_new_shared): was setting embedding flag of wrong
-	  string object.  [ruby-dev:32685]
-
-	* io.c (io_enc_str): should preserve default_external encoding.
-
-	* io.c (appendline): should do multibyte aware RS search.
-
-Mon Dec 24 02:06:35 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_open): documentation update.
-
-	* io.c (rb_io_s_pipe): ditto.
-
-	* io.c (io_fwrite): wrong encoding destination.
-
-	* io.c (rb_io_external_encoding): should return the encoding of
-	  the file reading.
-
-	* io.c (rb_io_internal_encoding): should return the encoding of
-	  read string.
-
-Mon Dec 24 01:46:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_pipe): allow specifying read-side encoding.
-
-	* io.c (io_enc_str): wrong encoding destination.
-
-Mon Dec 24 01:03:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): comparison including broken
-	  coderange strings do not consider encoding.
-
-Mon Dec 24 00:57:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): IO direct methods (foreach, readlines,
-	  read) now takes keyword argument: encoding, mode, open_args.
-
-Mon Dec 24 00:52:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_read): encoding argument reverted.
-
-	* io.c (mode_enc): independent function to share code.
-
-	* io.c (rb_io_internal_encoding): new method.
-
-Mon Dec 24 00:47:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb (TestBeginEndBlock::test_endblockwarn):
-	  rename endblockwarn.rb to endblockwarn_rb to avoid unnecessary
-	  warning in make test.
-
-Sun Dec 23 23:03:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_codepoint): implemented to raise invalid
-	  encoding.
-
-	* include/ruby/encoding.h (rb_enc_codepoint): macro is replaced as a
-	  declaration.
-
-Sun Dec 23 19:45:22 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.httpdate): fix 2 digits year for 20xx.
-	  reported by Tadayoshi Funaba.  [ruby-dev:32687]
-
-Sun Dec 23 19:33:42 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/open-uri.rb:  Fix method redefined warning.  [ruby-core:14304]
-
-Sun Dec 23 18:31:49 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): use rb_define_dummy_encoding.
-
-	* ext/nkf/nkf.c (Init_nkf): use rb_nkf_enc_get("ASCII").
-
-	* ext/nkf/nkf-utf8/nkf.c: Update 1.161.
-
-	* ext/nkf/nkf-utf9/config.h: default output encoding is now UTF-8.
-
-	* ext/nkf/lib/kconv.rb (Kconv.kconv): replace Encoding#name by
-	  Encoding#to_s.
-
-Sun Dec 23 18:02:52 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/gem_open_uri.rb:  Fix version check.
-
-Sun Dec 23 17:24:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_init): add eucJP as an alias of EUC-JP.
-
-Sun Dec 23 17:00:23 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.httpdate): use Time.utc for
-	  "day-of-week, dd-mon-yy HH::MM:SS GMT" format.
-
-Sun Dec 23 16:12:40 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Fix 1.9 warnings.
-
-Sun Dec 23 15:28:37 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems, test/rubygems:  Fix new 1.9 warnings.
-
-Sun Dec 23 14:43:10 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb:  Use require to load rubygems.rb so the correct path
-	  is in $LOADED_FEATURES on RubyGems upgrade.
-
-Sun Dec 23 11:26:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_call): use exact argument array interface.
-	  [ruby-core:14279]
-
-Sun Dec 23 11:01:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_binmode_m): removed C99ism.
-
-Sun Dec 23 10:23:23 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode_data_one_byte.c: Better (and more honest) optimization.
-
-	* transcode_data_japanese.c: First optimization step.
-
-Sun Dec 23 09:07:02 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h, encoding.c, re.c, io.c, parse.y, numeric.c,
-	  ruby.c, transcode.c, ext/nkf/nkf.c: rename rb_ascii_encoding to
-	  rb_ascii8bit_encoding.  rb_ascii_encoding is ambiguous with
-	  ASCII-8BIT and US-ASCII.
-
-Sun Dec 23 03:35:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.h: use patchlevel if revision is not set.
-
-	* {bcc32,win{32,ce}}/setup.mak (-version-): skip including revision.h.
-
-	* common.mk (srcs): new target to generated sources.
-
-	* common.mk (encs, ext/ripper/ripper.c): MAKEFLAGS needs -.
-
-	* enc/depend, enc/make_encmake.rb: use erb.
-
-Sun Dec 23 01:56:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): do not set encoding unless explicitly
-	  specified.
-
-	* io.c (rb_io_check_readable): fill fptr->enc by default_external
-	  if it's empty.
-
-	* io.c (io_enc_str): fptr->enc is always set for reading IO (by
-	  rb_io_check_readable(fptr)).
-
-Sun Dec 23 01:18:06 2007  David Flanagan  <david@davidflanagan.com>
-
-	* io.c, io.h: temporary patch to partially implement
-	  transcode-on-read and transcode-on-write
-
-Sun Dec 23 00:48:05 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/net/imap/test_imap.rb: added tests for SSL.
-
-Sat Dec 22 21:10:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_genericresolver_node_import): should
-	  not set instance variable "@kind" before initializing it.
-	  [ruby-dev:32677]
-
-Sat Dec 22 19:52:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_objectspace.rb: fix condition.
-
-Sat Dec 22 19:17:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/probeprofiler/: removed.
-
-Sat Dec 22 19:14:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* process.c (rb_f_fork): Unsupport Kernel.fork() on NetBSD.
-
-Sat Dec 22 15:54:54 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: Added simple tests for
-	  EUC-JP and Shift_JIS and tests for ASCII-only range
-
-Sat Dec 22 18:20:13 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (version.o): add dependency. [ruby-dev:32680]
-
-Sat Dec 22 17:45:11 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (Init_nkf): use rb_ascii_encoding() for
-	  rb_nkf_enc_get("US-ASCII").
-	  * if use rb_nkf_enc_get("US-ASCII"), ruby will crash - this is bug?
-
-Sat Dec 22 17:39:03 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb ($extmk): fixed broken condition.
-
-Sat Dec 22 17:35:59 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8.c: Update nkf.c rev:1.157.
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): replicate proper based encoding.
-
-	* ext/nkf/kconv.c (Kconv#kconv, to*): use self.encoding as from_enc
-	  when from_enc isn't given.
-
-Sat Dec 22 17:06:50 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/net/ssl.rb (OpenSSL::SSL::SSLContext.build): removed.
-
-	* ext/openssl/lib/net/ssl.rb (OpenSSL::SSL::SSLContext#set_params):
-	  new method to set suitable SSL parameters.
-
-	* lib/net/pop.rb, lib/net/http.rb, lib/net/imap.rb,
-	  test/openssl/test_ssl.rb: follow above change.
-
-	* test/net/http/test_https.rb: refine error case.
-
-Sat Dec 22 16:58:49 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (encode_utf7): accept UTF-8 strings.
-
-	* lib/net/imap.rb (decode_utf7): return UTF-8 strings.
-
-Sat Dec 22 15:56:36 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode_data_japanese: typo.
-
-Sat Dec 22 15:54:54 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* ChangeLog: Information for last patch got lost, fixed
-
-Sat Dec 22 15:45:45 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode_data_one_byte: slightly optimized
-
-	* transcode_data_japanese: new data file for EUC-JP and SHIFT_JIS
-	  (not yet optimized; tests to follow; data from
-	  http://nkf.sourceforge.jp/ucm/{SJIS|eucJP}-nkf.ucm)
-
-	* common.mk, transcode.c: Adjusted for transcode_data_japanese
-
-Sat Dec 22 15:30:13 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* */Makefile.sub (MFLAGS): define unless defined.
-
-Sat Dec 22 15:17:40 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb ($extmk): set true only when under ext/ or tool/.
-
-Sat Dec 22 15:14:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs, ext/ripper/ripper.c): needs MFLAGS.
-
-	* configure.in (STRINGIZE): stringizing macro.
-
-	* include/ruby/defines.h (STRINGIZE): fallback.
-
-	* tool/make-snapshot: new file.
-
-	* version.c (ruby_description, ruby_copyright): string constants for
-	  -v option.
-
-Sat Dec 22 15:03:37 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (initialize): fixed documentation.
-
-Sat Dec 22 15:01:16 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/pop.rb (enable_ssl): use OpenSSL::SSL::SSLContext.build
-	  instead of SSLContext.new (default verify mode is now
-	  OpenSSL::SSL::VERIFY_PEER).
-
-Sat Dec 22 14:45:21 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: shouldn't freeze nil. [ruby-dev:32677]
-
-Sat Dec 22 14:27:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* regenc.c (onigenc_ascii_is_code_ctype): moved from enc/ascii.c.
-
-	* regenc.h (onigenc_ascii_is_code_ctype): declared.
-
-	* enc/ascii.c: use onigenc_ascii_is_code_ctype.
-
-	* enc/us_ascii.c: new file for US-ASCII.
-
-Sat Dec 22 14:30:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_named_capture_assign_iter): allows non-ascii names and
-	  get rid of reserved word IDs.
-
-Sat Dec 22 14:18:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_float.rb, test_sprintf.rb: fix test place.
-
-Sat Dec 22 14:17:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_objectspace.rb: skip frozen string.
-
-Sat Dec 22 14:02:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* array.c (rb_ary_permutation): add volatile to avoid GC problem.
-
-Sat Dec 22 11:47:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_obj_instance_eval): use class of immediate objects.
-
-	* test/ruby/test_eval.rb: fix a test.
-
-Sat Dec 22 11:37:06 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): win32 support.
-
-Sat Dec 22 11:31:14 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb:  Place bin dir before lib dir so gem bin stubs work.
-
-Sat Dec 22 11:05:44 2007  Jim Weirich  <jim@tardis.local>
-
-	* lib/rake.rb (Rake): Added Rake and related libraries to the
-	  source code base.
-
-Sat Dec 22 10:30:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/insns2vm.rb: moved from lib/vm/instruction.rb.
-
-Sat Dec 22 10:25:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (reg_named_capture_assign_iter): captured name should
-	  not be reserved word.  a patch from Keita Yamaguchi
-	  <keita.yamaguchi AT gmail.com> in [ruby-dev:32675].
-
-	* parse.y (reg_named_capture_assign_iter): just ignore the
-	  captures that do not have valid local variable name.
-
-Sat Dec 22 10:19:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_method_name): now __method__ and __callee__ are
-	  aliases.  [ruby-core:14244]
-
-Sat Dec 22 08:29:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_buf_append): improvement for non-broken coded
-	  strings.
-
-Sat Dec 22 06:30:04 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_fork.rb: skip if fork is not unsupported.
-
-	* bootstraptest/test_io.rb: skip if require failed.
-
-Sat Dec 22 06:09:12 2007  David Flanagan  <david@davidflanagan.com>
-
-	* io.c: fix typo in rdoc comment
-
-Sat Dec 22 05:09:43 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_str_new, rb_intern3): rb_default_encoding() renamed.
-
-	* ext/nkf/nkf.c (rb_nkf_putchar): ditto.
-
-Sat Dec 22 03:54:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_ascii_encoding): renamed from previous
-	  rb_default_encoding().
-
-Sat Dec 22 02:49:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (command): block from cmd_brace_block was ignored.
-	  [ruby-dev:32644]
-
-	* re.c (rb_reg_prepare_re): stop ENCODING_NONE warning if the
-	  encoding of the str is ASCII-8BIT.
-
-Sat Dec 22 01:52:11 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_ungetc): avoid buffer relocation, which might cause
-	  serious problem under concurrent situation.
-
-Sat Dec 22 01:35:41 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (ARG_ENCODING_NONE): defined for /.../n option.
-	  (REG_ENCODING_NONE): ditto.
-	  (rb_char_to_option_kcode): return ARG_ENCODING_NONE for n.
-	  (rb_reg_prepare_re): warn /ascii/n =~ "non-ascii".
-	  (rb_reg_initialize): set REG_ENCODING_NONE from ARG_ENCODING_NONE.
-
-Sat Dec 22 01:23:10 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/json/test_json_addition.rb (test_core): do not use Time.now
-	  because JSON can't hold nsec.
-
-Sat Dec 22 01:10:30 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/tk/sample/tkextlib/vu/canvSticker2.rb,
-	  ext/tk/sample/demos-{en,jp}/bind.rb: fix typo. [ruby-dev:32668]
-
-Sat Dec 22 00:56:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/test.rb (valid_syntax): force_encoding input script.
-
-Fri Dec 21 23:48:38 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (depend_rules): suffixes list broken. fixed.
-
-Fri Dec 21 20:18:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_mul0): remove unused variable.
-
-	* bignum.c (bigdivrem): ditto.
-
-Fri Dec 21 20:13:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_catch_obj, rb_throw_obj): prototyped.
-
-	* include/ruby/intern.h (rb_fiber_alive_p): prototyped.
-
-Fri Dec 21 20:09:18 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): retry increasing until valid char is found.
-
-Fri Dec 21 20:00:02 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_replicate): now creates first class encoding.
-
-	* encoding.c (rb_define_dummy_encoding): always based on the default
-	  encoding.
-
-	* encoding.c (rb_enc_dummy_p): check if dummy.
-
-	* encoding.c (enc_inspect): shows if dummy.
-
-	* encoding.c (Init_Encoding): added dummy? method
-
-	* include/ruby/encoding.h (ENCODING_INLINE_MAX): increased.
-
-Fri Dec 21 18:40:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* io.c: write() should be in blocking region.
-
-	* bootstraptest/test_io.rb, test_knownbug.rb: move a fixed test.
-
-Fri Dec 21 17:56:30 2007  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: provisional support on Ruby-VM.
-
-	* ext/tk/MANUAL_tcltklib.eng, ext/tk/MANUAL_tcltklib.eucj:
-	  modify document about new functions.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/labelframe.rb,
-	  ext/tk/lib/tk/frame.rb, ext/tk/lib/tk/toplevel.rb,
-	  ext/tk/lib/tk/scrollbar.rb, ext/tk/lib/tk/message.rb,
-	  ext/tk/lib/tk/listbox.rb, ext/tk/lib/tk/text.rb,
-	  ext/tk/lib/tk/scale.rb, ext/tk/lib/tk/entry.rb,
-	  ext/tk/lib/tk/ttk_selector.rb, ext/tk/lib/tk/menu.rb,
-	  ext/tk/lib/tk/label.rb, ext/tk/lib/tk/spinbox.rb,
-	  ext/tk/lib/tk/textmark.rb, ext/tk/lib/tk/winpkg.rb,
-	  ext/tk/lib/tk/checkbutton.rb, ext/tk/lib/tk/panedwindow.rb,
-	  ext/tk/lib/tk/texttag.rb, ext/tk/lib/tk/root.rb,
-	  ext/tk/lib/tk/textimage.rb, ext/tk/lib/tk/radiobutton.rb,
-	  ext/tk/lib/tk/package.rb, ext/tk/lib/tk/macpkg.rb,
-	  ext/tk/lib/tk/composite.rb, ext/tk/lib/tk/autoload.rb,
-	  ext/tk/lib/tk/canvas.rb, ext/tk/lib/tk/button.rb,
-	  ext/tk/lib/tk/textwindow.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb,
-	  ext/tk/lib/tkextlib/tile/style.rb,
-	  ext/tk/lib/tkextlib/tile/tscrollbar.rb,
-	  ext/tk/lib/tkextlib/tile/tpaned.rb, ext/tk/lib/tkextlib/tile.rb,
-	  ext/tk/extconf.rb: support Tcl/Tk8.5 (partial, not complete).
-
-	* ext/tk/sample/demos-jp/widget,
-	  ext/tk/sample/demos-jp/pendulum.rb,
-	  ext/tk/sample/demos-jp/bind.rb,
-	  ext/tk/sample/tkextlib/vu/canvSticker2.rb,
-	  ext/tk/sample/demos-en/pendulum.rb,
-	  ext/tk/sample/demos-en/bind.rb: remove $KCODE and minor bug fix.
-
-Fri Dec 21 17:49:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode_bang): returns self if no conversion.
-	  [ruby-dev:32662]
-
-Fri Dec 21 17:44:47 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*:  Update to RubyGems 1.0.1, r1581
-
-Fri Dec 21 17:32:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/pending.rb: renamed from featurebug.rb.
-	  This file contains bugs which is known but will not be
-	  fixed in days.
-
-Fri Dec 21 17:31:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c (dummy_gdb_enums.various): added ENCODING and CODERANGE
-	  constants.
-
-	* .gdbinit: use enum constants.
-
-Fri Dec 21 17:28:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/featurebug.rb: added.
-
-	* bootstraptest/test_knownbug.rb: move a feature bug.
-
-Fri Dec 21 17:25:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_atfork): fix to mark thread object.
-	  [ruby-dev:32404]
-
-	* bootstraptest/test_knownbug.rb, test_fork.rb: move a fixed test.
-
-Fri Dec 21 17:07:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.h: extern variable should not be initialized.
-
-	* thread_pthread.c: add a parameter.
-
-Fri Dec 21 16:50:43 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (Init_Encoding): use enc_name as to_s.
-	  (enc_inspect): renamed from enc_to_s.  add "#" at beginning.
-
-Fri Dec 21 16:37:43 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/config.h (MIME_DECODE_DEFAULT, X0201_DEFAULT):
-	 defined as FALSE.  nkf and kconv don't decode MIME encoded string
-	 and don't convert JIS X 0201 Katakana.
-
-	* test/nkf/test_kconv.rb: fix tests.
-
-Fri Dec 21 16:33:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (enumerator_iter_i): adjusted for rb_block_call_func.
-
-	* include/ruby/ruby.h (rb_block_call_func): function to be called back
-	  as block.
-
-Fri Dec 21 16:25:25 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* common.mk, transcode_data_iso_8859.c: renamed to
-	  transcode_data_one_byte.c.
-
-Fri Dec 21 16:10:30 2007  Shigeo Kobayashi  <shigeo@tinyforest.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpMidRound): Round method bug
-	  pointed by Ryan Platte fixed(Patch to the patch from "NATORI
-	  Shin").  [ruby-talk:273360]
-
-Fri Dec 21 16:06:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (append_utf8): use rb_utf8_encoding() instead of
-	  rb_enc_find("utf-8").
-
-Fri Dec 21 15:59:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_init): use enc_register_at() directly.
-
-	* encoding.c (rb_utf8_encoding): returns utf-8 encoding.
-
-	* include/ruby/encoding.h (rb_utf8_encoding): prototyped.
-
-	* parse.y (UTF8_ENC): uses rb_utf8_encoding().
-
-Fri Dec 21 15:31:59 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_read): allow specifying encoding explicitly.
-
-	* io.c (rb_io_binmode): specifies encoding to ASCII-8BIT (binary).
-
-	* io.c (rb_io_s_read): IO should be in binary mode when offset is
-	  specified.
-
-	* encoding.c (rb_to_encoding): returns default encoding if no
-	  corresponding encoding found.
-
-Fri Dec 21 15:24:22 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (initialize): accept service name.  changed
-	  the default value of the old style +verify+ argument to true.
-
-Fri Dec 21 15:15:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (rb_garbage_collect): new function for debugging.
-
-Fri Dec 21 15:16:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding_index): should return error instead of
-	  exception even if type is incorrect.
-
-Fri Dec 21 14:58:27 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_init_copy): prohibit cloning of
-	  generators since Fibers cannot be copied.
-
-	* enumerator.c (enumerator_init_copy): typo fixed.
-
-Fri Dec 21 14:46:07 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (Init_IO): define IO::BINARY even if O_BINARY is not exist.
-
-Fri Dec 21 14:01:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_system.rb (TestSystem::valid_syntax): apply
-	  ASCII-8BIT encoding explicitly.
-
-	* re.c (rb_reg_prepare_re): add encoding name in the message.
-
-Fri Dec 21 13:54:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c: change "character encodings differ" error messages.
-
-Fri Dec 21 13:46:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register): set encoding constant.
-
-	* encoding.c (rb_enc_find_index): replace non-alphanumeric chars with
-	  underscores, so that initialize function can be called.
-
-	* encoding.c (rb_enc_find_index): extension libraries have lower case
-	  names conventionally.
-
-	* ruby.c (proc_options, process_options): finds encoding after
-	  load_path is initialized.
-
-Fri Dec 21 13:10:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_external_encoding): new method.
-
-	* encoding.c (rb_enc_from_encoding): returns Qnil for NULL
-	  encoding.
-
-	* io.c (rb_io_external_encoding): should fill delayed
-	  initialization for STDIN.
-
-Fri Dec 21 13:09:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_locale_charmap): return nil if no locale information.
-
-Fri Dec 21 12:55:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/runit, lib/rubyunit.rb, test/testunit/runit: removed.
-
-Fri Dec 21 12:45:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): avoid unnecessary loop using
-	  ONIGENC_LEFT_ADJUST_CHAR_HEAD().
-
-Fri Dec 21 12:32:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (Init_File): File.exists? revived.
-
-	* dir.c (Init_Dir): Dir.exists? again.
-
-Fri Dec 21 12:26:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: remove "illegal".
-
-Fri Dec 21 12:22:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* keywords, parse.y (__ENCODING__): represent script encoding.
-
-Fri Dec 21 12:16:50 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_is_ascii_only_p): new method ascii_only?.
-
-Fri Dec 21 12:11:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): set default external encoding if no
-	  encoding specified explicitly.
-
-Fri Dec 21 12:00:34 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: check langinfo.h and locale.h.
-
-	* encoding.c: use langinfo.h only if available.
-
-	* main.c: use locale.h only if available.
-
-Fri Dec 21 11:47:56 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c: include locale.h
-	  (rb_locale_charmap): new method Encoding.locale_charmap for
-	  nl_langinfo(CODESET).
-
-	* include/ruby/encoding.h (rb_locale_charmap): declared.
-
-	* main.c (main): call setlocale with LC_CTYPE.
-
-	* ruby.c (locale_encoding): use rb_locale_charmap.
-
-Fri Dec 21 11:35:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_dump.c: fix typo.  Reported by Yuki Mitsui.
-
-Fri Dec 21 11:28:00 2007  Tanaka Akira  <akr@fsij.org>
-
-	* regerror.c, string.c, io.c, lib/getoptlong.rb, lib/net/imap.rb,
-	  compile.c, sprintf.c, parse.y, ext/win32ole/win32ole.c,
-	  ext/tk/sample/demos-en/entry3.rb, ext/tk/lib/tcltk.rb,
-	  ext/openssl/ossl_bn.c, numeric.c, vm.c,
-	  benchmark/bm_so_meteor_contest.rb, bignum.c, ruby.c: don't "illegal"
-	  for non law violation context.
-
-Fri Dec 21 11:23:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (enc.mk): depends on $(RBCONFIG) instead of rbconfig.rb.
-
-	* encoding.c (Init_Encoding): ISO-8859-1 is no longer a replica.
-
-	* regenc.h (OnigEncodingDefine): names of extension and encoding can
-	  differ.
-
-	* enc/Makefile.in: always shared.
-
-	* enc/depend (deffile): should not upcase.
-
-	* enc/{ascii,euc_jp,sjis,utf8,iso_8859_{1..16}}.c: fix for Init.
-
-Fri Dec 21 09:26:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: use erb.
-
-Fri Dec 21 08:07:35 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_next): should call next_init() if fiber
-	  is dead already. [ruby-dev:32459]
-
-Fri Dec 21 01:21:49 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLContext.build):
-	  enable CRL checking by default.
-
-Fri Dec 21 01:20:56 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/http.rb (Net::HTTP#connect): use
-	  OpenSSL::SSL::SSLContext.build instead of SSLContext.new (default
-	  verify mode is now OpenSSL::SSL::VERIFY_PEER).
-
-	* lib/net/https.rb: SSL parameters are defined by attr_accessor.
-
-	* test/net/http/test_https.rb: add test for HTTPS features.
-
-Fri Dec 21 01:11:37 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* io.c (select_internal): should return original value.
-
-Fri Dec 21 00:26:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): wrong encoding check for tree strings.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_tr_s): "invalid mbstring
-	  sequence" is not an error to be tested.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_tr): ditto.
-
-Thu Dec 20 19:29:07 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (initialize): the second argument is an option
-	  hash now.  use SSLContext.build to specify SSL parameters.
-
-Thu Dec 20 19:11:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (native_thread_apply_priority): check
-	  _POSIX_PRIORITY_SCHEDULING for OpenBSD.
-
-Thu Dec 20 18:33:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* configure.in: add libthr for FreeBSD.
-
-Thu Dec 20 18:17:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk, *.ci: renamed to *.c.
-
-	* eval_load.c: renamed to load.c.
-
-Thu Dec 20 17:36:01 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*:  Import RubyGems 1.0.0, r1575.
-
-Thu Dec 20 17:18:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c: support Proc#binding.
-
-	* sample/test.rb: add a test.
-
-Thu Dec 20 17:15:15 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* pack.c: Slight change to documentation ('character' ->
-	  'byte (C char)'). [ruby-core:13126], see also [ruby-core:13998].
-
-Thu Dec 20 17:07:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (enc.mk): depends on rbconfig.rb.
-
-	* regenc.h (OnigEncodingDefine): external encoding definition macro.
-
-	* enc/Makefile.in: fix for linking.
-
-	* enc/depend, enc/make_encmake.rb: fix for Windows.
-
-	* enc/{ascii,euc_jp,sjis,utf8,iso_8859_{1..16}}.c: renamed.
-
-Thu Dec 20 16:42:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (find_line_no): return 0 if not found.
-
-Thu Dec 20 16:04:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci, vm.c, vm_core.h: change interface of
-	  vm_invoke_block() to specify block ptr.  [ruby-talk:266422]
-
-	* cont.c, eval_jump.ci, insns.def, proc.c, signal.c, thread.c:
-	  apply above change.
-
-	* bootstraptest/test_knownbug.rb: move fixed bug.
-
-	* bootstraptest/test_block.rb: ditto. and add a test.
-
-Thu Dec 20 15:47:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/iso_8859_{1..16}.c: renamed.
-
-Thu Dec 20 09:59:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_expandarray): fix sp increase place.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-dev:32581].
-
-	* bootstraptest/test_massign.rb: add a test for above.
-
-	* bootstraptest/test_syntax.rb: fix last committed test.
-
-Thu Dec 20 09:47:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_syntax.rb: add a test.
-
-Thu Dec 20 09:40:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each/NODE_RETURN): fix stack consistency.
-
-Thu Dec 20 09:42:11 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (big2str_orig): access beyond memory region cause crash
-	  on interrupt.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp> in
-	  [ruby-dev:32651].  [ruby-dev:32641]
-
-Thu Dec 20 09:06:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_index): wrong starting position.
-
-Thu Dec 20 06:34:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): add pop after throw as return.
-
-	* bootstraptest/test_knownbug.rb, test_syntax.rb: move resolved test.
-
-	* vm_core.h, iseq.c, compile.h: add debug output code.
-
-Thu Dec 20 04:57:18 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): remove unused retry entry.
-
-Thu Dec 20 04:15:41 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* */Makefile.sub (DEFS, RM): output to config.status.
-
-Thu Dec 20 02:59:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* common.mk (encs): create encoding directory.
-
-Thu Dec 20 02:50:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/iso8859_{1..16}.c: adjust for ruby.
-
-Thu Dec 20 02:28:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/iso8859_{1..16}.c: imported from Onigiruma 5.9.0.
-
-Thu Dec 20 02:23:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (RM): added.
-
-	* enc/depend (encs): sort in alpha-numeric order.
-
-	* enc/depend (clean, distclean): added.
-
-Thu Dec 20 01:10:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): should handle upper level eval iseq
-	  from break/next, and COMPILE_ERROR() breaks only one block.
-	  [ruby-dev:31372]
-
-Thu Dec 20 00:07:36 2007  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/drbtest.rb (test_07_public_private_protected_missing):
-	  followed current Ruby specification.
-
-Wed Dec 19 23:57:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_inspect, dir_path, dir_tell): check for frozen and closed
-	  is not needed.  [ruby-dev:32640]
-
-Wed Dec 19 22:59:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_sublen): adjust position if position is not at the
-	  head of a character.
-
-	* string.c (rb_str_chomp_bang): check if match start at the head
-	  of a character.
-
-	* string.c (rb_str_chomp_bang): wrong adjust condition.
-
-	* string.c (rb_str_rindex): comparison length should be based on
-	  bytes, not characters.
-
-	* string.c (rb_str_rindex_m): too much adjustment.
-
-	* re.c (reg_match_pos): pos adjustment should be based on
-	  characters.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_insert): test updated
-	  to check negative offset behavior.
-
-	* string.c (rb_str_each_line): should consider rslen.
-
-	* string.c (rb_str_buf_append): should propagate encoding.
-
-	* string.c (rb_str_each_line): ditto.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_each_line): should
-	  check encoding as well.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_each_line): empty
-	  array can not propagate encoding;  should not check.
-
-Wed Dec 19 21:42:18 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): should set checked encoding.
-
-	* string.c (rb_str_sub_bang): applied r14212 too.
-
-Wed Dec 19 20:40:01 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (bigmul1): C99ism.
-
-	* bignum.c (bigdivrem1): need dummy return value.
-
-Wed Dec 19 19:18:06 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Updated.
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): added.
-	  (find encoding or replicate default encoding)
-
-	* ext/nkf/nkf.c (NKF::<ENCODING>): redefine encoding constant.
-
-	* ext/nkf/lib/kconv.rb (Kconv::<ENCODING>): redefined as Encoding.
-
-	* ext/nkf/lib/kconv.rb: refactoring.
-
-Wed Dec 19 19:11:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_mul0): blocking check for bigger numbers.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-dev:32632].
-
-	* bignum.c (bigdivrem): ditto.
-
-Wed Dec 19 17:34:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): remove "retry" in block.
-	  ("iter{retry}" cause syntax error)
-	  Currently, "begin; ...; rescue; iter{retry}; end" cause
-	  syntax error too.
-
-	* bootstraptest/test_jump.rb: ditto.
-
-	* lib/drb/invokemethod.rb: ditto.
-
-	* sample/drb/darrayc.rb: ditto.
-
-	* sample/test.rb: ditto.
-
-	* test/drb/drbtest.rb: ditto.
-
-	* test/ruby/test_iterator.rb: ditto.
-
-	* sample/test.rb: add a 'test' directory on the SYSTEM test.
-
-Wed Dec 19 17:12:59 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb, test_block.rb:
-	  move fixed bug.
-
-	* bootstraptest/test_m17n.rb: added.
-
-Wed Dec 19 16:59:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (errinfo_place): skip if error is Fixnum.  [ruby-dev:32608]
-
-	* bootstraptest/test_exception.rb, test_known_bug.rb: move fixed bug.
-
-Wed Dec 19 16:31:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_named_capture_assign_iter): remove C99 dependency.
-
-	* parse.y (reg_named_capture_assign_iter): get rid of creating
-	  unnecessary ID.
-
-	* parse.y (rb_enc_symname2_p): check for non-nul-terminated string.
-
-Wed Dec 19 15:37:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insnhelper.ci (vm_yield_with_cfunc): call cfunc with
-	   (argv[0], data, argc, argv) to pass all arguments.
-
-	* enumerator.c (enumerator_each_i): adapted to new calling
-	  convention.
-
-Wed Dec 19 15:13:20 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_justify): should propagate encoding from pad
-	  string too.
-
-Wed Dec 19 13:57:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (TIMEZONE_VOID): check whether timezone requires zero
-	  arguments.  [ruby-dev:32631]
-
-Wed Dec 19 13:22:14 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (NKF::_ENCODING): removed.
-
-	* ext/nkf/nkf.c (rb_nkf_kconv): renamed to rb_nkf_convert.
-
-	* ext/nkf/nkf.c (rb_nkf_convert): set encoding.
-
-	* ext/nkf/nkf.c (rb_nkf_guess1): removed.
-
-	* ext/nkf/nkf.c (rb_nkf_guess2): renamed to rb_nkf_guess.
-
-	* ext/nkf/nkf.c (rb_nkf_guess):
-	  guess method now returns encoding object.
-
-	* ext/nkf/nkf-utf8/nkf.c: Update to nkf 2.0.8 2007-12-19.
-
-Wed Dec 19 10:52:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): an underscore succeeding after octal
-	  prefix is allowed.  [ruby-core:14139]
-
-Wed Dec 19 00:09:19 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): wrong radix check.  a patch from
-	  Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-dev:32628].
-
-	* bignum.c (big2str_find_n1): ditto.
-
-Tue Dec 18 23:53:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): fix for segfault.  [ruby-dev:31372]
-
-Tue Dec 18 23:44:32 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/net/http/utils.rb: split TestNetHTTPUtils module from
-	  test/net/http/test_http.rb. and start HTTP server in each test case.
-
-Tue Dec 18 23:27:51 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#accept_client):
-	  should rescue Errno::EINVAL from TCPServer#accept. this exception
-	  might occur if the server socket is not in ready to listen.
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#accept_client):
-	  don't call TCPServer#close if the :ShutdownSocketWithoutClose is set.
-
-	* lib/webrick/config.rb (WEBrick::Config::General): add new parameter
-	  :ShutdownSocketWithoutClose.
-
-Tue Dec 18 22:51:47 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLServer#shutdown):
-	  new method which calls TCPSocket#shutdown of the underlying socket.
-
-Tue Dec 18 22:11:50 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/rss/parser.rb, lib/rss/atom.rb, lib/rss/rss.rb,
-	  test/rss/rss-assertions.rb, test/rss/test_atom.rb: use
-	  pack/unpack("m") instead of base64 library.
-
-	* lib/webrick/httpproxy.rb: use delete("\n") instead of chomp/chop
-	  because the result of pack("m") might be multi-line.
-
-Tue Dec 18 22:12:35 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci, vm.c: rewrite sp manipulation around method/block
-	  invocation.  [ruby-dev:32547]
-
-Tue Dec 18 22:11:23 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/win32/lib/win32/sspi.rb: use pack/unpack("m") instead of
-	  base64 library which was already removed.
-
-Tue Dec 18 21:09:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (invoke_block): merge 2 stack overflow checks.
-
-Tue Dec 18 20:58:35 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insnhelper.ci, insns.def, object.c, vm.c, vm.h:
-	  optimize !@, != method invocation.
-
-	* id.c, id.h: ditto.
-
-	* bootstraptest/test_syntax.rb: add tests for above.
-
-Tue Dec 18 18:10:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: add issues.
-
-Tue Dec 18 20:22:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (arg tMATCH arg): call reg_named_capture_assign_gen if regexp
-	  literal is used.
-	  (reg_named_capture_assign_gen): assign the result of named capture
-	  into local variables.
-	  [ruby-dev:32588]
-
-	* re.c: document the assignment by named captures.
-
-Tue Dec 18 18:09:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_splice): propagate encoding.
-
-	* string.c (rb_str_subpat_set): ditto.
-
-Tue Dec 18 17:27:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_freeze): preserve frozen state of immediate
-	  values in internal hash table, a la generic_ivar.
-
-	* object.c (rb_obj_frozen_p): check immediate values too.
-
-	* variable.c (generic_ivar_set): add frozen check fro immediate
-	  values.
-
-Tue Dec 18 17:04:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode_bang, rb_str_transcode): set new
-	  encoding even if no conversion is done because of 7bit only.
-	  [ruby-dev:32591]
-
-Tue Dec 18 15:43:59 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs, ext/ripper/ripper.c): other options must come
-	  before MAKEFLAGS in GNU make.
-
-Tue Dec 18 15:19:55 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_rb.rb: Don't call private fail anymore.
-
-Tue Dec 18 15:17:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs, ext/ripper/ripper.c): pass MAKEFLAGS.
-
-Tue Dec 18 14:45:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (op_tbl): remove duplication to avoid symbol aliases.
-
-Tue Dec 18 14:39:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_nth): need not to raise out-of-range exception.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_aref_len): removed
-	  debug print.
-
-Tue Dec 18 14:05:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: get rid of target expanded as empty for nmake.
-
-Tue Dec 18 07:56:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (rb_obj_public_method): Object#public_method to retrieve
-	  public method object.
-
-	* proc.c (rb_mod_public_instance_method): Module#public_instance_method
-	  to retrieve public instance method from class / module.
-
-	* proc.c (mnew): visibility check added.
-
-	* eval_error.ci (rb_print_undef): add rb_ prefix.
-
-	* eval_error.ci (rb_print_undef): add visibility in the error
-	  message.
-
-Tue Dec 18 05:54:26 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/Env.rb, lib/base64.rb, lib/importenv.rb, lib/eregex.rb: removed.
-
-	* lib/ping.rb, lib/readbytes.rb: removed
-
-Tue Dec 18 02:30:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BUILTIN_ENCS): removed.
-
-	* common.mk (enc.mk): pass BUILTIN_ENCS from command line.
-
-	* enc/depend: ditto.
-
-	* enc/make_encmake.rb: ditto.
-
-Tue Dec 18 01:46:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): need to clear output buffer to avoid
-	  broken encoding compatibility check.
-
-Tue Dec 18 01:40:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (depend_rules): inserts ruby to only headers.
-
-Tue Dec 18 01:21:19 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_encode_length): chomp eol style modifiers.
-
-	* parse.y (parser_magic_comment): ditto.
-
-	* parse.y (set_file_encoding): ditto.
-
-Tue Dec 18 01:15:44 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs): added dependencies.
-
-	* enc/Makefile.in, enc/depend, enc/make_encmake.rb: moved serb code.
-
-	* lib/mkmf.rb (depend_rules): now takes content string, not file name.
-
-	* win32/enc-setup.mak: overrides default target.
-
-Tue Dec 18 00:26:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): raise error if non-Unicode fixed
-	  encoding option is specified for regexp literals with \u{}
-	  escapes.
-
-	* string.c (rb_str_squeeze_bang): should squeeze multibyte
-	  characters as well.
-
-Mon Dec 17 21:41:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/enc-setup.mak: extracts BUILTIN_ENCOBJS.
-
-	* tool/compile_prelude.rb: needs srcdir.
-
-Mon Dec 17 21:24:04 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* common.mk (miniprelude.c): add -I$(srcdir).
-
-Mon Dec 17 20:53:27 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_set_ssl_version):
-	  new method OpenSSL::SSL::SSLContext#ssl_version to wrap
-	  SSL_CTX_set_ssl_version.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_get_verify_result):
-	  new method OpenSSL::SSL::SSLSocket#verify_result to wrap
-	  SSL_get_verify_result.
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLContext.build):
-	  new method to build OpenSSL::SSL::SSLContext with Hash parameters.
-	  this method provides safety default parameters than SSLContext.new.
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL.verify_certificate_identity):
-	  new module function: pull out identity verification process
-	  from OpenSSL::SSL::SSLSocket#post_connection_check.
-
-Mon Dec 17 18:42:23 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (scan_once): need no encoding compatibility check.
-	  it's done inside of re_reg_search().
-
-	* string.c (rb_str_split_m): ditto.
-
-	* re.c (rb_reg_regsub): ditto.
-
-Mon Dec 17 17:50:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_index): check if substring is broken.
-
-	* string.c (rb_str_rindex): ditto.
-
-	* string.c (rb_str_succ): should carry over.
-
-Mon Dec 17 17:47:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs): new target to compile external encodings.
-
-	* enc/Makefile.in: became a serb template.
-
-	* enc/make_encmake.rb: creates enc.mk from enc/Makefile.in using serb.
-
-	* lib/mkmf.rb (relative_from): moved from ext/extmk.rb.
-
-	* lib/mkmf.rb ($extmk): true if under to top source directory, not
-	  only ext.
-
-	* lib/mkmf.rb (depend_rules): extracted from create_makefile.
-
-	* tool/serb.rb (serb): splitted from tool/compile_prelude.rb.
-
-Mon Dec 17 17:32:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MAKEFILES): removed enc/Makefile.
-
-	* configure.in (EXTERNAL_ENCOBJS, ENCSOS): removed.
-
-	* enc/Makefile.in (BUILTIN_ENCS): includes .c suffix.
-
-	* enc/depend: splitted from Makefile.in.
-
-	* {bcc32,win32,wince}/setup.mak (-encs-): extracts BUILTIN_ENCOBJS.
-
-Mon Dec 17 17:07:53 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_str_asciionly_p): use rb_enc_str_coderange.
-
-Mon Dec 17 16:39:25 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_str_coderange): set ENC_CODERANGE_BROKEN using
-	  rb_enc_precise_mbclen.
-	  (rb_str_valid_encoding_p): just check coderange is
-	  ENC_CODERANGE_BROKEN or not.
-
-Mon Dec 17 16:04:16 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#gets): added second
-	  optional argument to specify maximum length limit.
-
-Mon Dec 17 16:02:30 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb, lib/webrick/cgi.rb: Request-Line or
-	  header fields should be read with maximum length. [ruby-talk:231745]
-
-Mon Dec 17 14:03:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ENC_CODERANGE_VALID): rename from
-	  ENC_CODERANGE_8BIT.
-
-	* string.c (rb_enc_str_coderange): follow the renaming.
-
-Mon Dec 17 13:56:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_find): wrong condition fixed.
-
-	* sprintf.c (rb_str_format): check encoding based on result, not
-	  the format string.
-
-	* string.c (rb_str_upto): add encoding check.
-
-Mon Dec 17 12:21:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (RUNRUBY): added RUNRUBYOPT.
-
-Mon Dec 17 11:38:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* thread_win32.ci (native_thread_create): initialize
-	  th->machine_stack_maxsize as rb_gc_stack_maxsize.
-
-Sun Dec 16 17:07:35 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (transcode_loop): removed special case (-1)
-	  for undefined conversions.
-
-	* transcode_data_iso_8859.c: Changed from character constants
-	  ('\xC2') to integer constants (0xC2) for shorter files and
-	  better readability; eliminated duplicated tables; changed
-	  from -1 offset to actual UNDEF entry (not yet distinguishing
-	  UNDEF and ILLEGAL correctly).
-
-	* test/ruby/test_transcode.rb: added a test for UNDEF conversion.
-
-Sun Dec 16 14:51:59 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MAKEFILES): should be enc/Makefile, not GNUmakefile.
-	  [ruby-dev:32609]
-
-	* configure.in (BUILTIN_ENCS): removed escapes for OpenBSD.
-
-Sat Dec 15 23:58:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/openssl/test_pair.rb (SSLPair#ssl_pair): join the thread, even
-	  on an error.
-
-Sat Dec 15 23:50:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/xmlrpc/webrick_testing.rb: join webrick server thread.
-
-Sat Dec 15 22:27:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BUILTIN_ENCS): splitted command line instead of
-	  semicolons for Solaris.
-
-Sat Dec 15 21:38:24 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/timeout.rb: join the background thread to make sure it is dead.
-
-Sat Dec 15 20:20:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (enc/Makefile): add external encoding objects list.
-
-	* common.mk (BUILTIN_ENCOBJS): renamed from ENCOBJS.
-
-	* configure.in (BUILTIN_ENCS): [] needs to be enclosed because of m4.
-
-	* Makefile.in (BUILTIN_ENCOBJS): substituted by autoconf.
-
-	* enc/Makefile.in: new file to compile external encoding sources.
-
-	* encoding.c (rb_enc_find_index): auto-load external encoding objects
-	  as "ext/ENCODING_NAME".  [ruby-dev:32606]
-
-Sat Dec 15 13:04:30 2007  Tanaka Akira  <akr@fsij.org>
-
-	* vm_core.h (rb_thread_t): new member machine_stack_maxsize and
-	  machine_register_stack_maxsize.
-
-	* gc.c (rb_gc_stack_maxsize): new global variable for the thread size
-	  of the main thread.
-	  (STACK_LEVEL_MAX): use machine_stack_maxsize of current thread.
-	  (ruby_stack_check): check IA64 register stack.
-	  (ruby_set_stack_size): set rb_gc_stack_maxsize.
-	  (Init_stack): set rb_gc_stack_maxsize.
-
-	* thread_pthread.ci (native_thread_create): initialize
-	  th->machine_stack_maxsize and th->machine_register_stack_maxsize.
-
-	* vm.c (Init_BareVM): initialize th->machine_stack_maxsize and
-	  th->machine_register_stack_maxsize.
-
-	* thread_win32.ci (native_thread_create): initialize
-	  th->machine_stack_maxsize.  not tested.  just a guess at all.
-
-	[ruby-dev:32604]
-
-Sat Dec 15 12:58:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register, rb_enc_replicate, rb_enc_alias): check
-	  if already registered.
-
-Sat Dec 15 01:57:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc/options.rb (Options::parse): do not access $KCODE any
-	  longer.  [ruby-core:14079]
-
-	* lib/irb/init.rb (IRB::IRB.parse_opts): ditto.
-
-	* lib/cgi.rb (CGI::CGI): ditto.
-
-Fri Dec 14 18:18:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* thread_pthread.ci (native_thread_create): twice the stack size.
-	  512KB is not enough to complete test-all on Debian GNU/Linux on
-	  IA64.
-
-Fri Dec 14 16:10:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_p): RDoc update.  a patch from murphy <murphy AT rubychan.de>.
-	  [ruby-core:14010]
-
-Fri Dec 14 16:06:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cmp): encoding aware comparison.
-
-	* string.c (rb_str_casecmp): ditto.
-
-Fri Dec 14 15:25:30 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (encoding_equal): new function.
-
-	* transcode.c (str_transcode, transcode_dispatch): added two-step
-	  conversion logic via UTF-8.
-
-	* transcode.c: some minor formatting fixes
-
-	* transcode_data.h, transcode_data_iso_8859.c: Shortened
-	  extremely frequently used macros to shorten file length.
-
-	* test/ruby/test_transcode.rb: Fixed name of test class;
-	  added setup method to ensure all necessary encodings exist;
-	  split tests into more test methods; added tests; fixed ordering
-	  of arguments in assert_equal to have expected result first.
-
-Fri Dec 14 13:47:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ruby.imp): fix for circular dependency.  a patch from
-	  Yutaka Kanemoto <kinpoco AT gmail.com> in [ruby-dev:32590].
-
-	* regint.h, st.c, ext/json/ext/generator/generator.c: suppress
-	  warnings on AIX.
-
-Fri Dec 14 12:36:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_VARTYPE): check if a variable is defined
-	  and its type.
-
-	* configure.in (timezone, altzone): check for recent cygwin.
-
-	* missing/strftime.c (strftime): fix for timezone.  [ruby-dev:32536]
-
-	* lib/mkmf.rb (try_var): should fail for functions.
-
-	* ext/readline/extconf.rb: should use have_func for functions instead
-	  of have_var.
-
-Fri Dec 14 10:25:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/e2mmap.rb (Exception2MessageMapper::E2MM.Raise): $! no
-	  longer modifiable in 1.9.
-
-Fri Dec 14 08:17:24 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_protect): restore root_jmpbuf even if proc exits by
-	  break such as dbm.delete_if { break }.
-
-Fri Dec 14 02:55:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_nth): direct jump if string is 7bit only.  great
-	  performance boost for worst case.
-
-	* string.c (str_strlen): direct size if string is 7bit only.
-
-Fri Dec 14 02:29:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): 1st argument (typically the
-	  receiver) would have higher priority in encoding detection.
-
-Fri Dec 14 02:05:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_synchronized): should check if initialized.
-	  [ruby-dev:32585]
-
-Fri Dec 14 00:54:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): embedded string may override encoding
-	  of the regular expression.
-
-	* re.c (rb_reg_initialize): fix encoding of regular expression if
-	  embedded string has its own encoding specified.
-
-Thu Dec 13 22:16:46 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): encoding should never fall back
-	  to ASCII-8BIT unless both encodings are ASCII-8BIT.
-
-Thu Dec 13 20:31:28 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_shared_replace): make str noembed after free.
-
-Thu Dec 13 20:09:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_protect): restore root_jmpbuf to avoid SEGV by
-	  'IO.pipe; [].each.next' with gcc version 3.3.5 (Debian 1:3.3.5-13)
-	  on IA64.
-
-Thu Dec 13 17:51:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_split_m): need not to check encoding if regexp
-	  is empty.
-
-	* string.c (rb_str_justify): associate encoding of original to the
-	  result.
-
-	* string.c (rb_str_chomp_bang): need to check encoding of record
-	  separator.
-
-	* string.c (str_gsub): should copy encoding to the result.
-
-	* sprintf.c (rb_str_format): ditto.
-
-	* string.c (rb_str_succ): should not enter infinite loop for
-	  non-ASCII, non-alphanumeric character at the bottom.
-
-Thu Dec 13 17:03:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): should swap encoding indexes too.
-
-Thu Dec 13 16:41:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): should not judge compatibility
-	  based on rb_enc_asciicompat().
-
-Thu Dec 13 13:09:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/io.h (MakeOpenFile): fptr->enc should be
-	  initialized to zero.  [ruby-dev:32569]
-
-Thu Dec 13 08:56:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getc): use default external encoding if fptr->enc is
-	  not set.  [ruby-dev:32565]
-
-	* lib/rubygems/package.rb (Gem::TarReader::Entry::rewind): typo fixed.
-	  [ruby-dev:32565]
-
-Thu Dec 13 08:24:16 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): should associate default external encoding.
-
-	* io.c (io_read): should NOT associate default external encoding.
-
-Wed Dec 12 23:22:58 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c, regerror.c, string.c, parse.y, ruby.c, file.c:
-	  use capital letter for \xHH notation.  [ruby-dev:32511]
-
-Wed Dec 12 22:21:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): allow specifying external encoding in
-	  open mode, e.g. open(path, "r:utf-8").
-
-Wed Dec 12 21:26:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.ci (rb_alias): no need to skip aliasing when new
-	  equals to old.  [ruby-core:13990]
-
-Wed Dec 12 16:34:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_check_readable): set default external encoding to
-	  STDIN.
-
-	* io.c (io_enc_str): associate encoding to output string.
-
-Wed Dec 12 12:44:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (expr): 'not' and '!' should act as conditional
-	  expression.   [ruby-dev:32548]
-
-Wed Dec 12 12:11:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): should copy encoding.
-
-	* string.c (rb_str_sub_bang, str_gsub): should check and copy encoding
-	  to be replaced.
-
-Tue Dec 11 23:04:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): RDoc update.  a patch from Gary Wright
-	  <radar2002 AT gmail.com>.  [ruby-core:13998]
-
-	* pack.c (pack_unpack): ditto.
-
-Tue Dec 11 16:37:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_ascget): renamed from rb_enc_get_ascii.
-
-	* include/ruby/encoding.h: follow the renaming.
-
-	* re.c: ditto.
-
-Tue Dec 11 16:19:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, */Makefile.sub (CP, MV): added.
-
-	* common.mk (.y.c): not discard the old target until successfully
-	  created.
-
-Tue Dec 11 15:20:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): singleton_method_{added,removed,undefined}
-	  hooks should be defined for BasicObject.  [ruby-dev:32531]
-
-	* eval.c (Init_eval): method_missing should be defined for all
-	  objects; moved to BasicObject.
-
-Tue Dec 11 14:27:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_loop): get rid of SEGV at sequence can not be
-	  converted.
-
-	* transcode.c (rb_str_transcode_bang): copy encoding.  [ruby-dev:32532]
-
-	* test/ruby/test_transcode.rb: added tests from Martin Duerst <duerst
-	  AT it.aoyama.ac.jp>.  [ruby-dev:32532]
-
-Tue Dec 11 12:05:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_get_ascii): add an argument to provide the
-	  length of the returned character.
-
-	* include/ruby/encoding.h (rb_enc_get_ascii): add the argument.
-
-	* re.c (rb_reg_expr_str): modify rb_enc_get_ascii call.
-	  (rb_reg_quote): ditto.
-	  (rb_reg_regsub): ditto.
-
-Tue Dec 11 09:40:21 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE):
-	  parenthesize an argument.
-
-Tue Dec 11 02:23:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_method_missing): RDoc update patch from Hugh Sasse
-	  <hgs AT dmu.ac.uk>.  [ruby-core:12932]
-
-Tue Dec 11 01:51:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP::get): now supports gzip
-	  content-encoding.  a patch from Hugh Sasse <hgs AT dmu.ac.uk>.
-	  [ruby-core:13451]
-
-Tue Dec 11 01:21:21 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (shadowing_lvar_gen): no duplicate error for "_".
-
-Mon Dec 10 22:08:47 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): If an invalid range is given, do
-	  not raise an exception but return nil just like slice() does.
-
-Mon Dec 10 21:47:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (str_transcode): allow non-registered encodings.
-	  [ruby-dev:32520]
-
-Mon Dec 10 21:00:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_slice_bang): should return nil if position out
-	  of range.  a patch from Akinori MUSHA <knu AT iDaemons.org>.
-	  [ruby-dev:32518]
-
-Mon Dec 10 19:02:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_match): should calculate offset by converted
-	  operand.  [ruby-cvs:21416]
-
-Mon Dec 10 18:28:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/uri/common.rb (URI::REGEXP::PATTERN): typo in REG_NAME
-	  regular expression.  a patch from Ueda Satoshi
-	  <s-ueda AT livedoor.jp>.  [ruby-dev:32514]
-
-Mon Dec 10 17:46:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_tmp_new): creates hidden temporary buffer.
-
-	* transcode.c (transcoding): added a pointer to function to flush.
-
-	* transcode.c (transcode_loop): do not use string internal.
-	  [ruby-dev:32512]
-
-	* transcode.c (str_transcode): allow Encoding objects.
-
-	* transcode_data.h (BYTE_LOOKUP): use actual struct name.
-
-Mon Dec 10 16:52:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_insert): should not add length in bytes to index in
-	  chars.
-
-Mon Dec 10 14:33:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_public_send): rename invoke_method to public_send.
-	  it now invokes public method only no matter how it's called.
-
-Mon Dec 10 14:00:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c: new file to provide encoding conversion features.
-	  code contributed by Martin Duerst.
-
-Mon Dec 10 13:50:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_search): return byte offset.  [ruby-dev:32452]
-
-	* re.c (rb_reg_match, rb_reg_match2, rb_reg_match_m): convert byte
-	  offset to char index.
-
-	* string.c (rb_str_index): return byte offset.  [ruby-dev:32472]
-
-	* string.c (rb_str_split_m): calculate in byte offset.
-
-Mon Dec 10 09:56:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm1_neq.rb, bm_vm1_not.rb: added.
-
-Mon Dec 10 07:48:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): wrong token was generated.  [ruby-dev:32498]
-
-	* object.c (rb_obj_not_match): wrong test.
-
-Mon Dec 10 06:44:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_expr_str): use \xHH instead of \OOO.
-
-	* regerror.c (to_ascii): ditto.
-	  (onig_snprintf_with_pattern): ditto.
-	  (onig_snprintf_with_pattern): ditto.
-
-	* string.c (rb_str_inspect): ditto.
-	  (rb_str_dump): ditto.
-
-	* parse.y (parser_yylex): ditto.
-
-	* ruby.c (proc_options): ditto.
-
-	* file.c (rb_f_test): ditto.
-
-	[ruby-dev:32495]
-
-Mon Dec 10 06:41:00 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_names): new method Regexp#names.
-	  (rb_reg_named_captures): new method Regexp#named_captures
-	  (match_regexp): new method MatchData#regexp.
-	  (match_names): new method MatchData#names.
-
-	* lib/pp.rb (MatchData#pretty_print): show names of named captures.
-
-	[ruby-dev:32493]
-
-Mon Dec 10 01:35:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (expr): redefinable not (!) operator.
-
-	* parse.y (arg): ditto.
-
-	* object.c (rb_obj_not): new method "!".
-
-	* object.c (rb_obj_not_equal): new method "!=".
-
-	* object.c (rb_obj_not_match): new method "!~".
-
-Sun Dec  9 22:31:36 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_last_match): accept named capture's name.
-
-Sun Dec  9 15:57:53 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (match_backref_number): new function for converting a backref
-	  name/number to an integer.
-	  (match_offset): use match_backref_number.
-	  (match_begin): ditto.
-	  (match_end): ditto.
-	  (name_to_backref_number): raise IndexError instead of RuntimeError.
-	  (match_inspect): show capture index.
-
-Sun Dec  9 14:59:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h (CHECK_STACK_OVERFLOW): reserve frame size.
-	  [ruby-dev:32485]
-
-Sun Dec  9 14:38:25 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (rb_thread_mark): use rb_gc_mark_maybe() for
-	  VM stack specified by mark_stack_len.  [ruby-dev:32462]
-
-	* insnhelper.ci: clear vm stack extended by opt value.
-
-Sun Dec  9 14:08:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (FilePathStringValue): defined.  similar to
-	  FilePathValue but no taint check.
-
-	* file.c (rb_get_path_no_checksafe): implementation of
-	  FilePathStringValue.
-	  (rb_file_s_basename): use FilePathStringValue.
-	  (rb_file_s_dirname): ditto.
-	  (rb_file_s_extname): ditto.
-	  (rb_file_s_split): ditto.
-	  (rb_file_join): ditto.
-
-	* dir.c (file_s_fnmatch): ditto.
-
-Sun Dec  9 12:49:34 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (append_utf8): check unicode range.
-
-Sun Dec  9 12:39:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi.rb (read_multipart): exclude blanks from header values.
-	  [ruby-list:44327]
-
-Sun Dec  9 12:18:19 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_get_path): use the original object if to_path method is
-	  not defined.  [ruby-dev:32473]
-
-	* io.c (rb_f_open): call to_open on non-string objects, instead of
-	  to_str.  [ruby-dev:32473]
-
-Sun Dec  9 12:12:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_find): returns true if no characters to be removed is
-	  specified.
-
-Sun Dec  9 12:03:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_magic_comment): delimits with a semicolon.
-
-Sun Dec  9 11:29:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_trans): get rid of segfaults when has multibytes but
-	  source sets have no multibytes.
-
-Sun Dec  9 04:01:28 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_mbclen): return 1 if underlying implementation
-	  returns a length longer than e-p.
-	  (rb_enc_precise_mbclen): return needmore if underlying
-	  implementation returns a length longer than e-p.
-
-Sat Dec  8 17:59:40 2007  Tanaka Akira  <akr@fsij.org>
-
-	* signal.c (posix_signal): return value.
-
-Sat Dec  8 17:22:16 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/openssl/test_pkcs7.rb: Remove redundant module namespace.
-
-Sat Dec  8 17:07:10 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c (proc_options): make rb_raise format as a string literal to
-	  avoid warning.
-
-Sat Dec  8 16:18:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_check_preprocess): new function for validating regexp
-	  fragment.
-
-	* parse.y (regexp): invoke reg_fragment_check.
-	  (reg_fragment_check): defined.
-	  (reg_fragment_check_gen): defined.
-
-Sat Dec  8 11:06:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_mbclen): make it never fail.
-	  (rb_enc_nth): don't check the return value of rb_enc_mbclen.
-	  (rb_enc_strlen): ditto.
-	  (rb_enc_precise_mbclen): return needmore(1) if e <= p.
-	  (rb_enc_get_ascii): new function for extracting ASCII character.
-
-	* include/ruby/encoding.h (rb_enc_get_ascii): declared.
-
-	* include/ruby/regex.h (ismbchar): removed.
-
-	* re.c (rb_reg_expr_str): use rb_enc_get_ascii.
-	  (unescape_escaped_nonascii): use rb_enc_precise_mbclen to determine
-	  the termination of escaped non-ASCII character.
-	  (unescape_nonascii): use rb_enc_precise_mbclen.
-	  (rb_reg_quote): use rb_enc_get_ascii.
-	  (rb_reg_regsub): use rb_enc_get_ascii.
-
-	* string.c (rb_str_reverse) don't check the return value of
-	  rb_enc_mbclen.
-	  (rb_str_split_m): don't call rb_enc_mbclen with e <= p.
-
-	* parse.y (is_identchar): use ISASCII.
-	  (parser_ismbchar): removed.
-	  (parser_precise_mbclen): new macro.
-	  (parser_isascii): new macro.
-	  (parser_tokadd_mbchar): use parser_precise_mbclen to check invalid
-	  character precisely.
-	  (parser_tokadd_string): use parser_isascii.
-	  (parser_yylex): ditto.
-	  (is_special_global_name): don't call is_identchar with e <= p.
-	  (rb_enc_symname_p): ditto.
-
-	  [ruby-dev:32455]
-
-	* ext/tk/sample/tkextlib/vu/canvSticker2.rb: remove coding cookie
-	  because the encoding is not UTF-8.  [ruby-dev:32475]
-
-Fri Dec  7 20:21:35 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/net/ftptls.rb, ext/openssl/lib/net/telnets.rb:
-	  half-finished libraries are discontinued.
-
-Fri Dec  7 15:44:40 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb: use Hash for recursion check as inspect.
-
-Fri Dec  7 15:04:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (flatten): some performance improvements, based on a patch
-	  from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-core:13877].
-	  [ruby-core:13851]
-
-	* thread.c (rb_exec_recursive): use Hash instead of Array for
-	  performance improvement.  [ruby-core:13898]
-
-	* thread.c (recursive_pop): use object ID.
-
-Thu Dec  6 19:52:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): typo fixed ("!" -> "|") in the ripper code.
-
-Thu Dec  6 19:48:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): tUPLUS no longer works as identity operation any
-	  more.  inspired by [ruby-talk:265532].
-
-Thu Dec  6 18:22:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_precise_mbclen): new function for mbclen with
-	  validation.
-
-	* include/ruby/encoding.h (rb_enc_precise_mbclen): declared.
-	  (MBCLEN_CHARFOUND): new macro.
-	  (MBCLEN_INVALID): new macro.
-	  (MBCLEN_NEEDMORE): new macro.
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): replace mbc_enc_len
-	  by precise_mbc_enc_len.
-	  (ONIGENC_PRECISE_MBC_ENC_LEN): new macro.
-	  (ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND): new macro.
-	  (ONIGENC_CONSTRUCT_MBCLEN_INVALID): new macro.
-	  (ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE): new macro.
-	  (ONIGENC_MBCLEN_CHARFOUND): new macro.
-	  (ONIGENC_MBCLEN_INVALID): new macro.
-	  (ONIGENC_MBCLEN_NEEDMORE): new macro.
-	  (ONIGENC_MBC_ENC_LEN): use ONIGENC_PRECISE_MBC_ENC_LEN.
-
-	* enc/euc_jp.c: validation implemented.
-
-	* enc/sjis.c: ditto.
-
-	* enc/utf8.c: ditto.
-
-	* string.c (rb_str_inspect): use rb_enc_precise_mbclen for invalid
-	  encoding.
-	  (rb_str_valid_encoding_p): new method String#valid_encoding?.
-
-	* io.c (rb_io_getc): use rb_enc_precise_mbclen.
-
-	[ruby-dev:32438]
-
-Thu Dec  6 01:37:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regparse.c (i_apply_case_fold): fix for negative character class.  a
-	  patch from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-core:13884].
-
-Thu Dec  6 01:00:38 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_s_list): support NetBSD/Citrus iconv.
-
-Wed Dec  5 16:18:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_proc_s_new): call initialize.  [ruby-core:13824]
-
-	* proc.c (rb_proc_location): return file name and line number where
-	  the proc is defined.
-
-	* thread.c (thread_s_new): call initialize.  [ruby-core:13835]
-
-	* thread.c (thread_initialize): split initialize method.
-
-Wed Dec  5 15:25:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_intern3): fix to changing encoding to default, and
-	  uncommented r13835, which is rare but not impossible.
-
-Wed Dec  5 15:15:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (step_i, range_step): support non-fixnum steps.
-	  [ruby-talk:282100]
-
-Wed Dec  5 14:25:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix typo.
-
-Wed Dec  5 13:41:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yycompile): get rid of tracing while parsing.
-	  [ruby-dev:31351]
-
-	* thread.c (ruby_suppress_tracing): added a new parameter, which
-	  directs to call func always.
-
-Tue Dec  4 19:56:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_convert): should not set encoding unless
-	  the target encoding is supported.  [ruby-dev:32451]
-
-Tue Dec  4 17:34:17 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (tojis, tosjis, toeuc, toutf8):
-	  set encoding. [ruby-dev:32447]
-
-Tue Dec  4 17:07:25 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/json.rb, lib/json/*: moved to ext/json/lib.
-
-Tue Dec  4 16:34:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): achieve target encoding.
-
-	* ext/iconv/iconv.c (iconv_convert, iconv_finish, iconv_iconv,
-	  iconv_conv): set result string encoding.  [ruby-dev:32446]
-
-	* ext/iconv/iconv.c (iconv_initialize, iconv_s_open): set encoding to
-	  Iconv instance.
-
-Tue Dec  4 14:34:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): reverted c flag.
-
-Tue Dec  4 11:23:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): trailing spaces may exist at squeezing
-	  preceding 0s.  [ruby-core:13873]
-
-Mon Dec  3 11:51:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/Win32API/*: removed or moved to ext/dl/win32.
-
-	* ext/dl/win32/*: new. [ruby-dev:32387]
-
-Sun Dec  2 22:08:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokadd_mbchar): fix for ASCII chars.  [ruby-dev:32432]
-
-	* parse.y (parser_parse_string, parser_here_document): prevent false
-	  error messages.
-
-Sun Dec  2 20:43:22 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (unescape_escaped_nonascii): fix mbclen argument.
-
-Sun Dec  2 15:47:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokadd_mbchar): check insufficient multibyte char.
-	  [ruby-dev:32429]
-
-Sun Dec  2 15:42:16 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb: 0.2.1 -> 0.2.2.
-
-	* lib/rss/maker/itunes.rb: fixed new_itunes_category.
-	* lib/rss/maker/taxonomy.rb: new_taxo_topic -> new_topic because
-	  of consistency.
-
-	* test/rss/test_maker_itunes.rb, test/rss/test_itunes.rb: removed
-	  needless UTF-8 characters.
-
-Sun Dec  2 15:18:37 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_callee_setup_arg): fix error message.
-	  [ruby-dev:32430]
-
-Sun Dec  2 09:12:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (regexp): fix /#{}\xa1\xa2/e to be EUC-JP.
-	  (reg_fragment_setenc_gen): extracted from reg_compile_gen.
-
-Sun Dec  2 01:39:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_uv_to_utf8): declared.
-
-	* re.c (rb_reg_preprocess): new function for dynamic regexp with
-	  \u{} such as Regexp.new("\\u{6666}").
-	  (rb_reg_prepare_re): preprocess regexp for recompiling.
-	  (read_escaped_byte): new function.
-	  (unescape_escaped_nonascii): new function.
-	  (append_utf8): new function.
-	  (unescape_unicode_list): new function.
-	  (unescape_unicode_bmp): new function.
-	  (unescape_nonascii): new function.
-	  (rb_reg_initialize): preprocess regexp.
-
-	* pack.c (rb_uv_to_utf8): renamed from uv_to_utf8.
-
-	* parse.y (STR_NEW3): take func instead of has8 and hasmb.
-	  (parser_str_new): use default coderange mechanism except for regexp.
-	  (parser_tokadd_utf8): copy regexp source as-is.
-	  (parser_read_escape): UTF-8 stuff removed.
-	  (parser_tokadd_escape): has8bit and hasmb removed.
-	  (parser_tokadd_string): fix 8-bit single byte character with \u.
-	  (parser_parse_string): has8bit and hasmb removed.
-	  (parser_here_document): has8bit and hasmb removed.
-	  (parser_yylex): call parser_tokadd_utf8 instead of read_escape for
-	  UTF-8 character.
-
-Wed Dec  2 01:00:07 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb (XMLRPC::Server#server): Improve signal handling so
-	  pressing control-c in the controlling terminal or sending SIGTERM stops
-	  the XML-RPC server.
-
-Sat Dec  1 23:04:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c: rename primary_encoding -> default_external (encoding).
-
-Sat Dec  1 19:52:57 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (Time#to_datetime): use nsec instead of usec.
-
-	* lib/date.rb (DateTime#to_time): second minute as an argument to
-	  Time::utc contains fractional part in rational; hence Time
-	  object may keep resolution at most nanosecond.
-
-Sat Dec  1 14:36:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move fixed bugs.
-
-	* test/ruby/test_sprintf.rb: ditto.
-
-	* test/yaml/test_yaml.rb: ditto.
-
-Sat Dec  1 13:24:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_yield_with_cfunc): fix to passing argc on third
-	  parameter of IFUNC.  [ruby-dev:32329]
-
-	* enumerator.c: fix to pass exact number of argument.
-
-	* eval.c (rb_yield_values2): added.
-
-	* include/ruby/ruby.h: ditto.
-
-	* bootstraptest/test_knownbug.rb: move a fixed test.
-
-	* bootstraptest/test_block.rb: ditto.
-
-Sat Dec  1 10:45:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_open): use to_open for every non-string object.  path
-	  object may use method_missing.
-
-Sat Dec  1 09:44:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (concatarray, splatarray): use to_a instead of
-	  to_splat.
-
-	* insnhelper.ci (caller_setup_args): ditto.
-
-Sat Dec  1 03:34:32 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (newline_node): always remove NODE_BEGIN.
-
-Fri Nov 30 23:48:07 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (ruby_signal): use SA_SIGINFO if available.
-	  [ ruby-Patches-6418 ]
-
-Fri Nov 30 22:52:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (trap_signm): SIGVTALRM no longer used for green
-	  thread.  [ruby-talk:281318]
-
-	* signal.c (ruby_sig_finalize): do not install SIG_DFL handler if
-	  previous handler is sighandler().
-
-Fri Nov 30 21:02:15 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/json.rb, lib/json/add/{core.rb, rails.rb},
-	  test/json/test_json_rails.rb: additional files of JSON 1.1.2.
-	  [ruby-dev:32405]
-
-Fri Nov 30 19:33:38 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (rb_syck_mktime): avoid segmentation fault.
-	  [ruby-core:13735]
-
-Fri Nov 30 19:05:55 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_count): precise argument number check.
-
-	* enum.c (enum_count): return Enumerator if no block given.
-
-Fri Nov 30 16:42:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_take_while): returns Enumerator if no block given.
-
-	* enum.c (enum_drop_while): ditto.
-
-Thu Nov 29 16:59:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): remove unnecessary NODE_BEGIN.  [ruby-core:13814]
-
-Thu Nov 29 06:45:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_eql): recursive comparison should be based on
-	  eql?  [ruby-core:13803]
-
-Wed Nov 28 18:08:00 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json, lib/json, test/json: Update to JSON 1.1.2.
-	  (RubyForge#15447)
-
-	* math.c: fix typo.
-
-Wed Nov 28 16:29:35 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_invoke_block): should splat args.
-	  [ruby-dev:32392]
-
-	* test/ruby/test_yield.rb: add tests for above.
-
-Wed Nov 28 14:43:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extract_makefile): use dldflags instead of DLDFLAGS to
-	  get rid of mixing $LDFLAGS and $ARCH_FLAG.
-
-	* lib/mkmf.rb (configuration): ditto.
-
-	* lib/mkmf.rb (create_makefile): support for extensions which has no
-	  shared object.
-
-Wed Nov 28 02:42:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big2str_find_n1): removed extraneous element.
-	  [ruby-dev:32351], [ruby-dev:32365]
-
-	* bignum.c (big2str_find_n1): returns necessary digits now.
-
-	* sprintf.c (remove_sign_bits): extends sign bit first.
-
-Tue Nov 27 15:53:43 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): "when *[],1" dumps core.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32350]
-
-	* bootstraptest/test_syntax.rb: add a test for above.
-
-Tue Nov 27 15:40:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): "a[*b] += 1" dumps core.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32354]
-
-	* bootstraptest/test_syntax.rb: add a test for above.
-
-Tue Nov 27 12:47:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insns.def: change return value of "defined?"
-	  for $&, $1, ... .  If such variables are defined,
-	  return "global-variable".
-
-	* test/ruby/test_defined.rb: add tests.
-
-	* bootstraptest/test_syntax.rb: fix a test.
-
-Tue Nov 27 11:54:46 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: fix typo.
-
-Tue Nov 27 11:23:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test_beginendblock.rb: add loop to wait signal.
-	  [ruby-dev:32332]
-
-Tue Nov 27 11:14:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h, encoding.c, re.c, string.c, parse.y:
-	  rename ENC_CODERANGE_SINGLE to ENC_CODERANGE_7BIT.
-	  rename ENC_CODERANGE_MULTI to ENC_CODERANGE_8BIT.
-	  Because single byte 8bit character, such as Shift_JIS 1byte katakana,
-	  is represented by ENC_CODERANGE_MULTI even if it is not multi byte.
-
-Tue Nov 27 10:45:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_method_missing): fix stack trace.
-
-	* bootstraptest/test_knownbug.rb: move solved tests.
-
-	* bootstraptest/test_method.rb, test/ruby/test_regexp.rb: ditto.
-
-Tue Nov 27 09:57:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, compile.c: fix to allow dsym for alias/undef.
-	  [ruby-dev:32355]
-
-	* bootstraptest/test_method.rb: add tests for above.
-
-Mon Nov 26 23:18:46 2007  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/extserv.rb (initialize, stop_service): synchronize with
-	  ExtServManager.
-
-	* test/drb/test_drb.rb (TestDRbEval): ignored.
-
-Mon Nov 26 17:32:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (Init_Regexp): new method Regexp#fixed_encoding?
-	  [ruby-dev:32361]
-
-Mon Nov 26 13:28:14 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/complex.rb: be able to create Complex(0, -0.0). [ruby-list:44268]
-
-Mon Nov 26 11:24:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_fixed_encoding_p): extracted from rb_reg_prepare_re and
-	  rb_reg_s_union.
-	  (rb_reg_s_union): refactored.
-
-Mon Nov 26 10:44:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_read_internal, rb_sysopen_internal): remove C99 dependency.
-
-Sun Nov 25 22:21:35 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_enc_str_asciionly_p): declared.
-	  (rb_enc_str_asciicompat_p): defined.
-
-	* re.c (rb_reg_initialize_str): use rb_enc_str_asciionly_p.
-	  (rb_reg_quote): return ascii-8bit string if the argument is
-	  ascii-only to generate encoding generic regexp if possible.
-	  (rb_reg_s_union): fix encoding handling.  [ruby-dev:32094]
-
-	* string.c (rb_enc_str_asciionly_p): defined.
-
-Sun Nov 25 12:12:03 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb: Import fast-loading gem_prelude.rb from RubyGems.
-
-	* lib/rubygems*: Import RubyGems r1516.
-
-Sat Nov 24 23:25:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_eval.rb (TestEval::test_instance_eval_cvar):
-	  updated not to modify class variable of Object class.
-
-Fri Nov 23 17:34:24 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* io.c: add rb_read_internal() as blocking function.
-
-Fri Nov 23 17:33:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: fix comment.
-
-Fri Nov 23 17:26:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move solved tests.
-
-	* bootstraptest/test_io.rb, test_marshal.rb, test_objectspace.rb:
-	  ditto.
-
-	* test/ruby/test_integer.rb, test_regexp.rb: ditto.
-
-Fri Nov 23 15:59:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* struct.c (rb_struct_alloc_noinit): new function.
-	  (rb_struct_define_without_accessor): add allocator to the arguments.
-
-	* range.c (range_alloc): re-introduced using rb_struct_alloc_noinit.
-
-Fri Nov 23 15:27:43 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (REG_CASESTATE): unused macro removed.
-	  (rb_reg_prepare_re): check encoding difference.
-	  (rb_reg_initialize): check 8bit byte.
-
-	* parse.y (parser_tokadd_escape): fix has8bit.
-
-	  [ruby-dev:32113]
-
-Fri Nov 23 15:16:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_f_global_variables): variable names should not
-	  duplicate.  [ruby-dev:32344]
-
-Fri Nov 23 13:34:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* struct.c (rb_struct_define_without_accessor): new function.
-
-	* range.c (range_alloc): removed.
-	  (Init_Range): use rb_struct_define_without_accessor.
-
-	  based on [ruby-dev:32327].
-
-Fri Nov 23 11:01:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (match_begin): should return offset by character.
-	  [ruby-dev:32331]
-
-	* re.c (match_end): ditto.
-
-	* re.c (rb_reg_search): ditto.
-
-Fri Nov 23 10:44:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): defined(method(x)) dumped core.  a
-	  patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32335]
-
-Wed Nov 21 18:03:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: fix to recycle thread data (VM stack).
-
-	* thread.c: ditto.
-
-	* benchmark/bm_vm3_thread_create_join.rb: add loop count.
-
-Wed Nov 21 18:02:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: add path to trunk/lib if driver runner is
-	  in build directory.
-
-Wed Nov 21 16:39:21 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/fileutils/fileasserts.rb (assert_equal_timestamp): new assert
-	  to test tv_sec only for filestamp resolution portability.
-	  (assert_same_entry): use assert_same_entry for mtime comparison.
-
-Wed Nov 21 14:55:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* array.c (rb_ary_permutation): add gc guard codes.
-
-Wed Nov 21 11:16:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insnhelper.ci (vm_search_normal_superclass): rename function.
-
-	* insnhelper.ci (vm_search_superclass): ditto.
-
-	* proc.c (struct METHOD): rename rklass -> rclass.
-
-Wed Nov 21 03:12:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_f_system): returns nil on execution failure.
-	  [ruby-core:13715]
-
-Wed Nov 21 01:04:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (nil_plus): remove unused function.  [ruby-core:13737]
-
-Tue Nov 20 21:46:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_mload): ignore invalid digits in submicro.
-
-Tue Nov 20 20:33:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h: rename RFloat#double_value -> float_value.
-
-	* numeric.c, parse.y: ditto.
-
-Tue Nov 20 19:36:21 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.h, vm_core.h: decl of rb_gc_save_machine_context()
-	  should be at vm_core.h.
-
-	* include/ruby/ruby.h, intern.h: remove type rb_thread_t.
-
-	* include/ruby/intern.h: change rb_unblock_function_t,
-	  rb_unblock_function_t.
-
-	* file.c, process.c: apply above changes.
-
-	* thread.c, thread_pthread.ci, thread_win32.ci: ditto.
-
-	* io.c: support blocking open (2). [ruby-core:13614]
-
-Tue Nov 20 17:10:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_close_on_exec_p): new method IO#close_on_exec?.
-	  (rb_io_set_close_on_exec): new method IO#close_on_exec=.
-	  [ruby-dev:32323]
-
-Tue Nov 20 16:24:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (gc_mark_children): obj->as.file.fptr may be 0 for T_FILE.
-
-Tue Nov 20 15:09:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_read_escape): has8bit flag may be set with control
-	  escape.  [ruby-core:13722]
-
-	* parse.y (parser_prepare): set begging after BOM if exists.
-	  [ruby-core:13718]
-
-Tue Nov 20 14:55:37 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*: Update to RubyGems 0.9.5.
-
-Tue Nov 20 13:00:44 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h win32/win32.c (rb_w32_pipe_exec): use dual fd
-	  instead of socketpair when mode is RDWR.
-
-	* io.c (pipe_open): pass &write_fd to rb_w32_pipe_exec().
-
-	* io.c (popen_redirect): define only when HAVE_FORK.
-
-Tue Nov 20 12:12:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): add tied_io_for_writing member.
-
-	* io.c: use tied_io_for_writing for duplex popen.
-
-	* gc.c: mark tied_io_for_writing.
-
-	* common.mk: gc.o depends io.h.
-
-	  [ruby-dev:32205]
-
-Tue Nov 20 11:59:33 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/drb/test_drb.rb: rename TestRubyYield to TestDRbRubyYield to
-	  avoid name crash with test/ruby/test_yield.rb.
-	  TestRuby18Yield is renamed to TestDRbRuby18Yield too.
-
-Tue Nov 20 03:24:42 2007  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/extservm.rb: merged from ruby_1_8 branch.
-
-	* lib/drb/acl.rb: ditto.
-
-	* lib/drb/ssl.rb: ditto.
-
-	* lib/drb/unix.rb: ditto.
-
-	* lib/drb/drb.rb: ditto.
-
-	* lib/drb/observer.rb: ditto.
-
-	* lib/drb/invokemethod.rb: ditto.
-
-	* test/drb/test_drbssl.rb: ditto.
-
-	* test/drb/test_drb.rb: ditto.
-
-	* test/drb/drbtest.rb: ditto.
-
-	* test/drb/test_drbunix.rb: ditto.
-
-Tue Nov 20 00:52:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/fileutils/fileasserts.rb (assert_equal_time): show nsec if
-	  assertion fails but time.to_s equals.
-	  (assert_same_entry): use assert_equal_time.
-
-	* test/fileutils/test_fileutils.rb (test_install): use
-	  assert_equal_time.
-
-Mon Nov 19 18:46:49 2007  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (utime_internal): fallback utimensat to utimes.
-
-Mon Nov 19 17:51:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: check struct timespec, clock_gettime, utimensat,
-	  struct stat.st_atim,
-	  struct stat.st_atimespec,
-	  struct stat.st_atimensec,
-	  struct stat.st_mtim,
-	  struct stat.st_mtimespec,
-	  struct stat.st_mtimensec,
-	  struct stat.st_ctim,
-	  struct stat.st_ctimespec,
-	  struct stat.st_ctimensec.
-
-	* include/ruby/missing.h: provide struct timespec if not available.
-
-	* time.c: support nanosecond-resolution using struct timespec.
-	  (time_nsec): new method: Time#nsec and Time#tv_nsec.
-
-	* include/ruby/intern.h: provide rb_time_nano_new.
-
-	* file.c (utime_internal): use utimensat if available.
-	  (rb_file_s_utime): refactored.
-	  (rb_f_test): use stat_atime, stat_mtime, stat_ctime.
-	  (rb_stat_cmp): check tv_nsec.
-	  (stat_atimespec): new function.
-	  (stat_atime): ditto.
-	  (stat_mtimespec): ditto.
-	  (stat_mtime): ditto.
-	  (stat_ctimespec): ditto.
-	  (stat_ctime): ditto.
-	  (rb_stat_atime): use stat_atime.
-	  (rb_file_s_atime): ditto.
-	  (rb_file_atime): ditto.
-	  (rb_stat_mtime): use stat_mtime.
-	  (rb_file_s_mtime): ditto.
-	  (rb_file_mtime): ditto.
-	  (rb_file_ctime): use stat_ctime.
-	  (rb_file_s_ctime): ditto.
-	  (rb_stat_ctime): ditto.
-
-	* variable.c (rb_copy_generic_ivar): clear clone's instance variables
-	  if obj has no instance variable.
-
-	* marshal.c (w_object): dump instance variables of generated string
-	  for TYPE_USERDEF, even if original object has instance variables.
-
-	* lib/time.rb (Time#xmlschema): use nsec instead of usec.
-
-	[ruby-dev:32306]
-
-Mon Nov 19 17:48:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_class_superclass): should not raise exception for
-	  BasicObject.  [ruby-Bugs-15668]
-
-Mon Nov 19 16:04:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_permutation): gives all permutations of elements
-	  if no argument given.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.
-	  [ruby-dev:32309]
-
-Mon Nov 19 02:44:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): alias and undef accept dsyms as well
-	  as literals.  [ruby-dev:32308]
-
-Mon Nov 19 02:31:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_add_method): no redefinition warning for undef.
-
-Mon Nov 19 01:53:11 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_read_escape): disallow control and meta modifiers
-	  for non-ASCII characters.  [ruby-core:13685]
-
-Sun Nov 18 20:47:41 2007  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (mark_dump_arg): it may be called after dump_ensure.
-
-Sun Nov 18 18:27:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_minus): fix Time.at(2**60+1) - Time.at(2**60).
-
-Sun Nov 18 17:28:49 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_arg): show actual year in 2-3 digits year warning.
-	  (time_mdump): show actual year in "year too big to marshal" error.
-
-Sun Nov 18 14:03:44 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_alias): do not call hook functions until
-	  initialization finishes.  [ruby-talk:279538]
-
-Sun Nov 18 09:09:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (String#tr_cpp): make preprocessor identifiers.
-
-Sun Nov 18 05:19:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/mkmf.rb (have_struct_member): define HAVE_type_member.
-
-Sat Nov 17 23:51:29 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke): bug fix. [ruby-talk:279100]
-
-Sat Nov 17 23:21:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): should clear parser->tokp as well.
-	  [ruby-dev:32250]
-
-	* parse.y: remove NEED_ASSOC that break test_parser_events.
-
-	* parse.y (parser_yylex): should not decrement line numbers at the
-	  end of file.
-
-	* file.c (rb_find_file_ext): search .rb files first through in the
-	  loadpath.
-
-Fri Nov 16 23:31:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_odd_p): new method added.  a patch from Tadashi
-	  Saito <shiba AT mail2.accsnet.ne.jp>.  [ruby-dev:32305]
-
-	* bignum.c (rb_big_even_p): ditto.
-
-Fri Nov 16 17:41:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (Document-class): moved the simplest example to
-	  the top.
-
-	* ext/iconv/iconv.c (iconv_s_iconv): Document-method: needs class
-	  prefix for class method.  [ruby-core:13542]
-
-	* ext/iconv/iconv.c (iconv_iconv): also instance method needs to be
-	  qualified.
-
-Fri Nov 16 16:26:57 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* include/ruby/ruby.h: added some declarations for event hooks.
-
-	* lib/profile.rb: set VM::InstructionSequence.compile_option.
-
-Fri Nov 16 11:16:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb (String#is_binary_data?): use Integer#fdiv.
-
-Fri Nov 16 03:36:01 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c: Node#value defined twice.
-
-	* lib/yaml/: several method redefinitions causing warnings.
-
-Fri Nov 16 03:01:00 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/types.rb: Likewise, pass self to YAML::quick_emit.
-
-Fri Nov 16 02:51:59 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml.rb (quick_emit): use combination of object_id and hash to
-	  identify repeated object references, since GC will reuse memory of
-	  objects during output of YAML. [ruby-Bugs-8548] [ruby-Bugs-3698]
-
-Thu Nov 15 19:49:03 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/curses/extconf.rb: check macro if cannot find func.
-	  [ruby-list:44224]
-
-Thu Nov 15 18:04:06 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: fix TMP_RUBY_PREFIX for relative load path
-	  environment.
-
-Thu Nov 15 17:28:21 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: absolute path may not start with a slash.
-	  pointed by usa.
-
-Thu Nov 15 17:07:54 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: fix first substitution.
-	  use constant for prefix.
-	  pointed by Richard Kilmer.
-
-Thu Nov 15 14:29:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (prereq): added auto generated sources.  [ruby-dev:32280]
-
-Thu Nov 15 12:31:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: use constant for prefix.
-
-Thu Nov 15 12:24:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: use simple template system for source
-	  code generation.
-
-Thu Nov 15 12:19:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::FileStore::restore): use
-	  lockfile for exclusive locks.  a patch from <tommy AT tmtm.org>.
-	  [ruby-dev:32296]
-
-Thu Nov 15 12:14:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/compile_prelude.rb (c_esc): need to escape closing brace.
-
-Thu Nov 15 11:52:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: adjust RbConfig::CONFIG paths relative
-	  to the installation path.
-
-Thu Nov 15 11:25:20 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c (usage): fix typo on --disable-gems option.
-	  pointed by Richard Kilmer.
-
-Wed Nov 14 16:16:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/net/http/test_https_proxy.rb
-	  (HTTPSProxyTest::test_https_proxy_authentication): initialize
-	  local variable 't' first.  [ruby-dev:32253]
-
-Wed Nov 14 15:39:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/socket/test_socket.rb: update not to use 1.8 assignment to
-	  external local variable in the block parameters.  [ruby-dev:32251]
-
-	* test/strscan/test_stringscanner.rb: avoid $KCODE, and use
-	  String#force_encoding().  [ruby-dev:32251]
-
-Wed Nov 14 14:04:42 2007  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk, Makefile.in: rename prelude.c to miniprelude.c.
-	  rename ext_prelude.c to prelude.c
-
-	* win32/Makefile.sub: ditto.
-
-	* bcc32/Makefile.sub: ditto.
-
-Wed Nov 14 07:09:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* blockinlining.c, compile.c, compile.h, debug.c, debug.h,
-	  id.c, insnhelper.h, insns.def, thread.c, thread_pthread.ci,
-	  thread_pthread.h, thread_win32.ci, thread_win32.h, vm.h,
-	  vm_dump.c, vm_evalbody.ci, vm_opts.h: fix comments and
-	  copyright year.
-
-Wed Nov 14 07:07:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/makedocs.rb, template/insnstbl.html: removed.
-
-Wed Nov 14 02:50:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c): dependency also needs vpath.
-
-	* common.mk (node_name.inc, prelude.c): VPATH in nmake does not
-	  work for targets of explicit rules.
-
-Wed Nov 14 02:11:38 2007  Tanaka Akira  <akr@fsij.org>
-
-	* missing/isinf.c (isinf): don't define if the macro is defined.
-
-	* configure.in: no need to set ac_cv_func_isinf=yes on non-gcc
-	  solaris.
-
-Wed Nov 14 01:34:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (round): fallback definition.
-
-	* numeric.c (flo_divmod, flo_round): use round() always.
-	  [ruby-dev:32269]
-
-Wed Nov 14 00:33:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h: introduce 2 macros:
-	  RFLOAT_VALUE(v), DOUBLE2NUM(dbl).
-	  Rename RFloat#value -> RFloat#double_value.
-	  Do not touch RFloat#double_value directly.
-
-	* bignum.c, insns.def, marshal.c, math.c, numeric.c, object.c,
-	  pack.c, parse.y, process.c, random.c, sprintf.c, string.c,
-	  time.c: apply above changes.
-
-	* ext/dl/mkcallback.rb, ext/json/ext/generator/generator.c:
-	  ditto.
-
-Wed Nov 14 00:15:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/ytab.sed: get rid of GNU sed feature.  a patch from Laurent
-	  Sansonetti <laurent.sansonetti AT gmail.com> in [ruby-core:13470].
-
-Tue Nov 13 21:41:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c), ext/ripper/depend (ripper.c): process after
-	  bison with sed.  [ruby-dev:32204]
-
-	* ruby.c (proc_options): use yydebug in cmdline_options.
-
-	* ruby.c (process_options): set yydebug flag of parser.
-
-	* parse.y (yydebug): moved into struct parser_params.
-
-	* parse.y (rb_parser_get_yydebug, rb_parser_set_yydebug): parser
-	  generic methods.
-
-	* */Makefile.sub (parse.c): moved to common.mk.
-
-	* tool/ytab.sed: comment out yydebug definition, and substitute
-	  yyerror with parser_yyerror.
-
-Tue Nov 13 16:33:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flodivmod): work around for infinity.
-
-	* numeric.c (flo_divmod): work around for platforms have no round().
-	  [ruby-dev:32247]
-
-Tue Nov 13 15:26:33 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lex.c.blt: moved from lex.c.
-
-	* lex.c.src: copied from keywords.  This is the source of lex.c.blt.
-
-	* Makefile.in (lex.c): use lex.c.blt if keywords is same as lex.c.src.
-
-	* win32/Makefile.sub (lex.c): re-introduce copy rule.
-
-	* bcc32/Makefile.sub (lex.c): ditto.
-
-	* wince/Makefile.sub (lex.c): ditto.
-
-Tue Nov 13 15:21:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_specialized_instruction): check argc.
-
-Tue Nov 13 14:44:32 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* test/yaml/test_yaml.rb: fixed the failing YAML Struct test
-	  at ko1's request.
-
-Tue Nov 13 02:57:04 2007  URABE Shyouhei  <shyouhei@ice.uec.ac.jp>
-
-	* numeric.c (flo_divmod): round to the nearest integer.
-	  [ ruby-Bugs-14540 ]
-
-Tue Nov 13 00:36:16 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/ruby/test_settracefunc.rb: fixed tests for set_trace_func.
-
-Mon Nov 12 19:47:29 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (call_trace_proc): should return value.
-
-Mon Nov 12 19:45:18 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (miniruby): use $(COMMONOBJS) and $(DMYEXT)
-	  instead of $(LIBRUBY_A).
-
-Mon Nov 12 18:32:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (MINIOBJS): added prelude.$(OBJEXT).
-
-Mon Nov 12 17:13:23 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in, common.mk: add prelude.o to MINIOBJS.
-
-Mon Nov 12 16:52:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): rdoc about srcprefix.  a patch from
-	  Daniel Berger <djberg96 AT gmail.com> in [ruby-core:13378].
-
-Mon Nov 12 16:48:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in, common.mk: add ext_prelude.o to OBJS.
-
-Mon Nov 12 13:57:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (MINIDLNOBJS): removed.
-	  (MINIOBJS): set to dln.o if dmydln.o is not used.
-
-	* Makefile.in (miniruby): use MINIOBJS instead of MINIDLNOBJS.
-
-Mon Nov 12 13:53:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): handle stringified
-	  symbols properly using ruby-forward-string.
-
-Mon Nov 12 12:17:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (MINIDLNOBJS): defined.
-
-	* Makefile.in (miniruby): use MINIDLNOBJS and COMMONOBJS instead of
-	  MINIOBJS and OBJS to avoid linking both dmydln.o and dln.o.
-
-Sun Nov 11 20:32:45 2007  Tanaka Akira  <akr@fsij.org>
-
-	* {win32,wince,bcc32}/Makefile.sub: delete lex.c rule.
-
-Sun Nov 11 19:40:52 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in (lex.c): simplified.
-
-Sun Nov 11 18:31:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in (lex.c): touch lex.c if gperf failed but lex.c exists.
-	  Although this may cause non-updated lex.c,
-	  svn co may generate keywords newer than lex.c especially on
-	  a file system which can record fractional mtime such as XFS.
-
-Sun Nov 11 17:32:46 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* insnhelper.ci (vm_call_method): pass mn->nd_clss to
-	  vm_call_cfunc() instead of klass.
-
-	* vm.c (rb_thread_method_id_and_klass): traverse parent_iseq.
-
-	* thread.c (call_trace_proc): use rb_thread_method_id_and_klass().
-
-Sun Nov 11 16:54:25 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lex.c: renamed from lex.c.blt.
-
-	* Makefile.in (lex.c): use find command to check mtime.
-
-Sun Nov 11 05:34:13 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* bin/gem: Add forgotten gem command.
-
-Sat Nov 10 23:50:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (tr_trans): cast to unsigned char after dereference
-	  a pointer to a char to avoid SEGV with "\377".tr("a", "b").
-	  on FreeBSD/amd64.
-
-Sat Nov 10 23:08:53 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in, common.mk, Makefile.in: don't generate
-	  libminiruby-static.a.
-
-Sat Nov 10 19:46:54 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in, common.mk, Makefile.in: generate libminiruby-static.a
-	  which contains prelude.o for miniruby.
-
-Sat Nov 10 18:10:07 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gem_prelude.rb: new file for gem libraries.  currently empty.
-
-	* common.mk: generate ext_prelude.c by prelude.rb and gem_prelude.rb.
-	  ruby (not miniruby) is linked with ext_prelude.o instead of
-	  prelude.o.
-
-	* inits.c (rb_call_inits): don't call Init_prelude.
-
-	* ruby.c: support --disable-gems option.
-	  (ruby_init_gems): new function to define Gem::Enable and
-	  invoke Init_prelude.
-	  (process_options): call ruby_init_gems just after
-	  ruby_init_loadpath.
-
-	* tool/compile_prelude.rb: support multiple files.
-
-Sat Nov 10 17:27:55 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* thread.c (call_trace_proc): don't call ID2SYM() for ID_ALLOCATOR
-	  to avoid SEGV.
-
-Sat Nov 10 16:37:07 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems: Import RubyGems revision 1493.
-
-	* lib/rubygems.rb: ditto.
-
-	* lib/ubygems.rb: ditto.
-
-	* lib/rbconfig/datadir.rb: ditto.
-
-	* test/rubygems: ditto.
-
-Sat Nov 10 16:34:21 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/soap/property.rb: Don't override Enumerable#inject for 1.9.
-
-Sat Nov 10 14:43:30 2007  David Flanagan  <davidflanagan@ruby-lang.org>
-
-	* parse.y: use ASCII encoding for string literals that are
-	  7-bit clean, fixing regression from my previous patch
-
-Sat Nov 10 13:18:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub: vendor_ruby support.
-
-Fri Nov  9 23:33:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_nextc): added single line read forward buffer.
-
-	* parse.y (parser_yylex): adjust line number for fluent interface.
-
-Fri Nov  9 22:04:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.h (FRAME_MAGIC_MASK_BITS): bits of FRAME_MAGIC_MASK.
-
-	* insnhelper.ci (vm_call_cfunc, vm_cfunc_flags): use shift operations.
-
-Fri Nov  9 21:46:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (eval): should be volatile value for GC.
-
-Fri Nov  9 17:48:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (locale_encoding): guesstimate encoding from environment
-	  variables.  [ruby-core:13315]
-
-	* ruby.c (process_options): set primary encoding from environment.
-
-Fri Nov  9 16:51:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_each_byte): should update rbuf_off and rbuf_len for
-	  each iteration.  [ruby-dev:31659][ruby-dev:32192]
-
-	* variable.c (rb_cvar_set): cvar assignment obey same rule to cvar
-	  reference.  [ruby-dev:32192]
-
-Fri Nov  9 15:52:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_check_encoding, rb_set_primary_encoding): ENCODING
-	  is no longer in FL_USERS flags.
-
-Fri Nov  9 15:20:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_squeeze_bang): initialize squeezing table if no
-	  arguments given.
-
-Fri Nov  9 13:57:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (each_with_index_i): use rb_yield_values() for
-	  compatibility with Enumerator#with_index().  a patch from Yusuke
-	  ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32195]
-
-Fri Nov  9 13:45:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (TestIterator::IterTest::each):
-	  #each_pair is now alias to #each.  [ruby-dev:32192]
-
-	* test/ruby/test_iterator.rb (TestIterator::test_assoc_yield):
-	  ditto
-
-Fri Nov  9 12:56:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_load.c (loaded_feature_path): check with type of given feature.
-
-Fri Nov  9 12:43:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_basicinstructions.rb: updated for new class
-	  behavior.  [ruby-dev:32192]
-
-	* encoding.c (enc_name): Encoding should not rely on ENCODING in
-	  the FL_USERS flags.
-
-	* encoding.c (rb_enc_from_encoding): do not call rb_enc_associate
-	  for encoding itself.
-
-	* encoding.c (enc_register_at): ditto.
-
-	* marshal.c (r_ivar): do not set real instance variable for
-	  encoding data associated.
-
-Fri Nov  9 10:43:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (send_internal): use self in the previous frame to check for
-	  protected methods.  [ruby-core:13254]
-
-	* insnhelper.ci (vm_call_method): send! method has gone.
-
-Fri Nov  9 10:38:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* marshal.c (w_object): should be SPECIAL_CONST_P() instead of
-	  IMMEDIATE_P().
-
-Fri Nov  9 10:29:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_invoke_method): check if invoked in function style.
-	  [ruby-core:13245]
-
-	* insnhelper.ci (vm_call_cfunc, vm_cfunc_flags): stores and returns VM
-	  calling flags.
-
-	* vm.c (rb_vm_cfunc_funcall_p): returns if the current method is
-	  invoked in function style.
-
-Fri Nov  9 10:10:21 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: add rb_context_t#type.
-
-Fri Nov  9 10:05:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (set_arg0): fix breaking environ bugs.
-
-Fri Nov  9 07:26:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c: update MT URL.[ruby-core:13305].
-
-Thu Nov  8 17:09:55 2007  David Flanagan  <davidflanagan@ruby-lang.org>
-
-	* object.c: improve docs for Object.tap
-
-	* ChangeLog: fix bogus dates on my previous entries
-
-Thu Nov  8 15:13:56 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y: fix segfault with \x escapes in regexps
-	  delete unused #if 0 code regions from previous patch
-
-Thu Nov  8 12:12:10 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_read_escape): remove C99/gcc-ism.
-
-Thu Nov  8 07:54:22 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y: patch, based on Nobu's, work to support \u escapes
-	           also modifications for better coderange detection
-
-	* test/ruby/test_unicode_escapes.rb: test cases
-
-	* test/ruby/test_mixed_unicode_escapes.rb: mixed encoding test cases
-
-Thu Nov  8 07:14:37 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y (rb_intern3): commented out broken code that prevented
-	  correct interning of multi-byte symbols.  Without this patch
-	  :x==:x is false when x is a multi-byte character.
-
-Thu Nov  8 07:04:31 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* string.c (tr_setup_table, tr_trans): fix test failures
-	  in test/ruby/test_string.rb
-
-Wed Nov  7 15:07:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_each_with_index): make different arrays at each
-	  iteration.  [ruby-dev:32181]
-
-Wed Nov  7 05:17:24 2007  David Flanagan <davidflanagan@ruby-lang.org>
-
-	* eval.c: fix typo in invoke_method documentation
-
-Wed Nov  7 03:52:26 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_product): core dumped with non array arguments.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32180]
-
-Wed Nov  7 03:32:38 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/encodings/SHIFT-JIS.rb (REXML::Encoding): place -x for
-	  nkf conversion.  a patch from <moonwolf AT moonwolf.com>.
-	  [ruby-dev:32183]
-
-Wed Nov  7 02:59:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_each_index): should return meaningful value.
-
-Tue Nov  6 16:37:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_load.c (loaded_feature_path): need to expand relative paths.
-
-	* eval_load.c (rb_feature_p): check if the feature is loading with
-	  load path.  [ruby-dev:31932]
-
-	* eval_load.c (load_lock): check the result of barrier waiting.
-
-	* thread.c (rb_barrier_wait): check if owned by the current thread.
-
-	* thread.c (rb_barrier_release): ditto.
-
-Mon Nov  5 08:01:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_eval): move #send to Kernel module from BasicObject.
-
-Mon Nov  5 05:17:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Switch::summarize): fix for long form
-	  option with very long argument.  a patch from Kobayashi Noritada
-	  <nori1 AT dolphin.c.u-tokyo.ac.jp> in [ruby-list:44179].
-
-Mon Nov  5 01:20:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (call_args): remove "parenthesize argument(s) for future
-	  version" warning.  when I added this warning, I had a plan to
-	  reimplement the parser that is simpler than the current one.
-	  since we abandoned the plan, warning no longer required.
-
-Mon Nov  5 01:02:56 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTPHeader#initialize): provide default
-	  User-Agent to fix 500 error on some corrupted HTTP servers.
-	  [ruby-core:13135]
-
-Mon Nov  5 00:32:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_send): allow send/__send__ to call methods of all
-	  visibility again.  we no longer provide __send, __send!.
-
-	* eval.c (rb_invoke_method): new method to honor private
-	  visibility.  if it's invoked in a function call style, it calls
-	  private methods as well (previous 1.9 send behavior).
-
-Mon Nov  5 00:24:24 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: vendor_ruby support.
-
-	* configure.in (RUBY_LIB): duplicated.
-
-Mon Nov  5 00:01:33 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_quote): quote \v as well.
-
-Sun Nov  4 23:51:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_initialize_m): use StringValuePtr instead of
-	  StringValueCStr because \0 exists when Regexp.new("\0").
-
-Sun Nov  4 08:11:19 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): count TOTAL.
-
-Sun Nov  4 03:58:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_setup_table): use C array for characters that fit
-	  in a byte to gain performance.
-
-	* string.c (rb_str_delete_bang): ditto.
-
-	* string.c (rb_str_squeeze_bang): ditto.
-
-	* string.c (rb_str_count): ditto.
-
-	* string.c (tr_trans): ditto.
-
-Sun Nov  4 00:06:40 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): ObjectSpace.count_objects implemented.
-	  [ruby-core:12301]
-
-Sat Nov  3 22:49:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_each_pair): make Hash#each to be alias to
-	  Hash#each_pair for compatibility and clarity.
-
-	* hash.c (env_each_pair): ditto.
-
-Sat Nov  3 22:41:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: --with-vendor-hdrdir implemented.
-
-	* lib/mkmf.rb: check --vendor argument.
-
-	* README.EXT: explain --vendor option for extconf.rb
-
-	* README.EXT.ja: ditto.
-
-Sat Nov  3 20:30:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: --with-vendordir implemented.
-
-	* mkconfig.rb: add config to vendorlibdir and vendorarchdir.
-
-	* instruby.rb: make vendor library directories.
-
-	* ruby.c: insert vendor library directories into load path.
-
-Fri Nov  2 20:55:49 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/content.rb, lib/rss/content/, lib/rss/maker/content.rb,
-	  test/rss/test_content.rb, test/rss/test_maker_content.rb,
-	  test/rss/rss-testcase.rb (RSS::TestCase): supported
-	  content:encoded with RSS 2.0.
-	  Suggested by Sam Lown. Thanks.
-
-Fri Nov  2 20:47:04 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb: 0.2.0 -> 0.2.1.
-
-Thu Nov  1 21:56:45 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (Init_Exception): make NameError to be subclass of
-	  StandardError again.
-
-	* error.c (Init_Exception): make SecurityError to be subclass of
-	  Exception, since it's too important to be handled implicitly.
-
-Thu Nov  1 14:51:39 2007 David Flanagan <davidflanagan@ruby-lang.org>
-	* enum.c (take_while_i, drop_while_i) add RTEST to handle nil return
-
-Thu Nov  1 02:12:50 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (prereq): update the path of prelude.c.
-
-	* common.mk (prelude.c): rollback a part of r13675, because it is not
-	  documented and causes build error.
-
-Thu Nov  1 01:52:23 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enum.c (enum_drop): fix typo.
-
-Thu Nov  1 01:51:01 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_core.h (ruby_current_thread): RUBY_EXTERN'ed for probeprofiler.
-
-Thu Nov  1 00:46:30 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/configure.bat, setup.mak: now can recognize OS even if
-	  the ``--target'' option of configure is omitted.
-
-	* win32/README.win32: update the descriptions about compiler.
-
-Wed Oct 31 03:13:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_take_while): separate with-block form.
-
-	* enum.c (drop_while_i): ditto.
-
-	* enum.c (enum_butfirst): abandon butfirst method.  reverted.
-
-Tue Oct 30 10:03:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_butfirst): add a new method to iterates over
-	  elements but first n.  RDoc need to be updated.
-
-	* enumerator.c (Init_Enumerator): remove unnecessary symbol
-	  initialization.
-
-Mon Oct 29 18:42:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (bvar): block-local variable can shadow outer variable.
-	  [ruby-core:13036]
-
-Mon Oct 29 17:58:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_substr): performance improvement.  [ruby-dev:31806]
-
-Mon Oct 29 17:20:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_replicate): new function to replicate encoding.
-
-	* encoding.c (enc_based_encoding): Encoding#base_encoding returns
-	  based encoding of replica.
-
-Mon Oct 29 17:18:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): ASCII encoding is compatible with
-	  ASCII-compatible encoding, even for non-string objects.
-
-Sun Oct 28 21:50:02 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: :redirect option implemented to disable redirects.
-	  (OpenURI::HTTPRedirect): new exception class for redirection.
-
-Fri Oct 26 17:38:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (int_chr): take an optional encoding parameter.
-	  [ruby-core:12816]
-
-Fri Oct 26 17:14:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_pow): returns 1.0 for 0**0.0.
-
-	* numeric.c (fix_pow): returns infinity for 0**-1.  [ruby-dev:32084]
-
-Fri Oct 26 15:00:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-{case,label}-indent): adjust for
-	  labels inside switch block.
-
-Fri Oct 26 05:48:57 2007  David Flanagan <davidflanagan@ruby-lang.org>
-	* array.c: raise IndexError for negative length in rb_ary_fill
-
-Wed Oct 25 07:12:03 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb (Net::Telnet#login): Allowing "passphrase" in
-	  addition to "password" for Telnet login prompts. [ruby-Bugs-10746]
-
-Wed Oct 25 06:34:11 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb (Net::Telnet#login): Making the password prompt
-	  pattern case insensitive. [ruby-Bugs-10746]
-
-Fri Oct 26 04:21:36 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/pop.rb (Net::POP3::do_start): type fixed.  a patch from
-	  Dan Zwell <dzwell AT zwell.net> in [ruby-core:12941].
-
-Fri Oct 26 01:48:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_assoc): check and convert inner arrays (assocs)
-	  using #to_ary.
-
-	* hash.c (rb_hash_s_create): check and convert argument hash
-	  using #to_hash.
-
-	* hash.c (rb_hash_s_create): Hash#[] now takes assocs as source of
-	  hash conversion.
-
-Thu Oct 25 16:46:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): dot at the head of the line denote line
-	  continuation from previous one to support fluent interface.
-	  [experimental]
-
-	* misc/ruby-mode.el (ruby-calculate-indent): support fluent dot.
-
-Thu Oct 25 14:19:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_tell, rb_io_seek): check errno too.  [ruby-dev:32093]
-
-Thu Oct 25 13:59:53 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y (parser_tokspace): increment tokidx
-	  fixes test failure at [test/ruby/test_stringchar.rb:72]
-
-Thu Oct 25 09:49:49 2007  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri.rb, lib/uri/ldaps.rb: added LDAPS
-	  scheme. [ruby-dev:31896]
-
-Wed Oct 25 06:23:14 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/parser.rb (XMLRPC::Convert::dateTime): Fixing a bug that
-	  caused time zone conversion to fail for some ISO 8601 date formats.
-	  [ruby-Bugs-12677]
-
-Wed Oct 25 04:59:28 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client#do_rpc): Explicitly start
-	  the HTTP connection to support keepalive requests. [ruby-Bugs-9353]
-
-Wed Oct 25 04:46:53 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client#do_rpc): Improving the error
-	  message for Content-Type check failures. [ruby-core:12163]
-
-Wed Oct 25 03:45:08 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/utils.rb (XMLRPC::ParseContentType#parse_content_type):
-	  Making Content-Type checks case insensitive. [ruby-Bugs-3367]
-
-Wed Oct 24 17:09:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokspace): make space in token buffer.
-
-	* parse.y (parser_yylex): fix encoding of single character literal.
-
-Tue Oct 23 13:44:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (call_args2): nd_head of NODE_BLOCK_PASS should be a list.
-	  [ruby-core:12850]
-
-Tue Oct 23 10:42:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): encoding set by command line option takes
-	  priority over the encoding in the source, as the primary encoding.
-
-Mon Oct 22 19:24:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): allow space after -E (encoding) option.
-
-Mon Oct 22 11:03:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_check_encoding): returns index now.
-
-	* encoding.c (rb_enc_compatible): check if two objects have compatible
-	  encodings.
-
-	* encoding.c (enc_compatible_p): added Encoding.compatible?.
-
-	* include/ruby/encoding.h (rb_enc_compatible): prototype.
-
-Sun Oct 21 18:29:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_default, rb_enc_primary): return pointers to
-	  rb_encoding of default and primary respectively.  [ruby-core:12795]
-
-	* encoding.c (set_primary_encoding): removed primary_encoding setter.
-
-Sat Oct 20 13:17:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_cycle): hide temporary array from ObjectSpace.
-	  [ruby-core:12762]
-
-Sat Oct 20 11:49:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_get_path): returns frozen string.
-
-	* file.c (rb_file_s_chown, rb_file_s_lchown): use uid_t and gid_t.
-
-Fri Oct 19 20:08:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_id_encoding): returns ID "encoding".
-
-	* marshal.c (w_encoding): dump encoding name.
-
-	* marshal.c (r_ivar): load encoding.
-
-Fri Oct 19 16:41:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_regx_options, reg_compile_gen): relaxened encoding
-	  matching rule.
-
-	* re.c (rb_reg_initialize): always set encoding of Regexp.
-
-	* re.c (rb_reg_initialize_str): fix encoding for non 7bit-clean
-	  strings.
-
-	* re.c (rb_reg_initialize_m): use ascii encoding for 'n' option.
-
-Fri Oct 19 11:09:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): set primary encoding from the parser
-	  always.  [ruby-core:12758]
-
-	* ruby.c (load_file): should not discard the parser parameter.
-
-Fri Oct 19 10:55:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_last): removed unused variables.
-
-Thu Oct 18 17:08:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_find_index): update RDoc.  a patch from David Flanagan
-	  <david AT davidflanagan.com> in [ruby-core:12710].
-
-	* enum.c (enum_take, enum_drop): ditto.
-
-	* enum.c (enum_cycle): should not cause infinite loop for empty
-	  arrays.  [ruby-core:12710]
-
-	* range.c (Init_Range): typo fixed.
-
-Thu Oct 18 16:39:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/source.rb (REXML::SourceFactory::SourceFactory): more
-	  duck typed.  better performance on JRuby.
-	  http://headius.blogspot.com/2007/10/another-performance-discovery-rexml.html
-
-Thu Oct 18 09:33:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_first): takes first n element if argument is
-	  given.  [ruby-core:12697]
-
-	* range.c (range_last): returns last n elements if argument is
-	  given.
-
-	* array.c (rb_ary_subseq, rb_ary_last): export.
-
-Wed Oct 17 17:39:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): fixed reversed condition.  [ruby-core:12722]
-
-Wed Oct 17 13:54:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_union): the last check was not complete.
-
-Wed Oct 17 11:30:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_from_encoding, rb_enc_register): associate index
-	  to self.
-
-	* encoding.c (enc_capable): Encoding objects are encoding capable.
-
-	* re.c (rb_reg_s_union): check if encoding matching by exact encoding
-	  objects.
-
-Wed Oct 17 06:18:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_alias, rb_enc_find_index): changed
-	  enc_table_alias to a name-to-index hash.
-
-	* encoding.c (rb_enc_init): use upper case names for aliases to use as
-	  constant names.
-
-	* encoding.c (enc_find): allow symbols.
-
-	* encoding.c (Init_Encoding): define encoding constants.
-
-	* st.c (strcasehash): fix wrong code range condition.
-
-Wed Oct 17 05:07:18 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_primary_encoding): added Encoding.primary_encoding.
-
-	* parse.y (rb_parser_encoding): added.
-
-	* ruby.c (proc_options): added -E and --encoding options.
-
-	* ruby.c (process_options): set primary encoding from command line
-	  option if set, or source encoding.
-
-	* include/ruby/encoding.h (rb_enc_from_encoding,
-	  rb_get_primary_encoding, rb_set_primary_encoding): prototypes.
-
-	* include/ruby/node.h (rb_parser_encoding): prototype.
-
-Wed Oct 17 03:37:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_desc): set encoding.
-
-	* re.c (rb_reg_s_union): check encodings.
-
-	* enc/utf8.c (utf8_code_to_mbclen): 0xfe and 0xff are valid Unicode to
-	  be encoded to 2bytes in UTF-8.  [ruby-core:12700]
-
-Wed Oct 17 02:50:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_ord): use encoding.
-
-Wed Oct 17 01:57:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): allow binary encoding option.
-	  [ruby-dev:32083]
-
-Tue Oct 16 19:48:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_s_union): check for encoding of original object.
-
-Tue Oct 16 18:28:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* debug.c: use enum for constants for gdb if possible.
-
-Tue Oct 16 18:20:10 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c, debug.c: move debug enum and constants to debug.c.
-
-Tue Oct 16 18:16:15 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c (RUBY_ENCODING_SHIFT): added as enum.
-
-	* .gdbinit (rp): show encoding and coderange for strings.
-
-Tue Oct 16 14:48:38 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_regx_options): check if regexp encoding option
-	  matches to current encoding.
-
-	* re.c (char_to_option, rb_char_to_option_kcode): 'n' is not kcode
-	  option now.
-
-	* re.c (rb_reg_to_s, rb_reg_error_desc): copy encoding rather than
-	  append as an option.
-
-	* re.c (make_regexp, rb_reg_prepare_re): use encoding of Regexp and
-	  String instead of kcode.
-
-	* re.c (rb_reg_initialize): set fixed option if none is set.
-
-	* re.c (rb_reg_regcomp): ditto.
-
-	* re.c (rb_reg_equal): check if encodings are equal.
-
-	* re.c (rb_reg_initialize_m): encoding option is obsolete.
-
-	* re.c (rb_kcode, rb_get_kcode, rb_set_kcode): removed.
-
-	* re.c (Init_Regexp): removed Regexp#kcode method.
-
-	* ruby.c (proc_options): allow long encoding name.
-
-Tue Oct 16 14:03:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_union): encoding of all regexp objects should
-	  match.  [ruby-dev:32076]
-
-Tue Oct 16 13:49:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (enc_to_s): rename function.
-
-Tue Oct 16 13:25:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_new4): should copy encoding.  a patch from NARUSE,
-	  Yui <naruse AT airemix.com>.  [ruby-dev:32076]
-
-Tue Oct 16 01:31:23 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): RDoc update.  a patch from David Flanagan
-	  <david AT davidflanagan.com> in [ruby-core:12710].
-
-Tue Oct 16 01:25:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): define #to_s to show encoding name
-	  in to_s representation as well as #inspect.
-
-Mon Oct 15 13:24:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_round): should be number but not rounding factor.
-	  [ruby-dev:32060]
-
-Mon Oct 15 11:45:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_bytes0): refined length check.  [ruby-dev:32059]
-
-Mon Oct 15 10:24:19 2007  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (pst_to_s): returns a string such as "pid 10220 exit 1"
-	  instead of "256".  [ruby-dev:32053]
-	  (pst_inspect): change format
-	  "#<Process::Status: pid=10220,exited(1)>" to
-	  "#<Process::Status: pid 10220 exit 1>".
-
-Mon Oct 15 09:58:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_bytes0): check if source has enough data.
-	  [ruby-dev:32054]
-
-Mon Oct 15 01:15:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (s_accept_nonblock): make accepted fd
-	  nonblocking.  [ruby-talk:274079]
-
-Sun Oct 14 17:31:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_obj_encoding): rdoc update.  a patch from David
-	  Flanagan <david AT davidflanagan.com>.  [ruby-core:12664]
-
-	* encoding.c (enc_dump, enc_load): marshaling feature.  a patch from
-	  David Flanagan.  [ruby-core:12665]
-
-	* encoding.c (Init_Encoding): undefine allocator of Encoding.
-	  [ruby-core:12665], [ruby-core:12666]
-
-	* test/ruby/test_encoding.rb: tests for Encoding from David Flanagan
-	  [ruby-core:12665]
-
-Sun Oct 14 11:09:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb (PP::PPMethods#pp_hash): don't sort keys because hash is
-	  ordered.
-	  (ENV.pretty_print): call pp_hash with sorted hash.
-
-Sun Oct 14 04:08:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (AC_SYS_LARGEFILE): keep results also in command
-	  options, to vail out of mismatch.  [ruby-list:44114]
-
-	* mkconfig.rb, lib/mkmf.rb (configuration): add DEFS.
-
-Sun Oct 14 03:55:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/mkexports.rb: deal with __fastcall name decorations.
-	  [ruby-list:44111]
-
-Sun Oct 14 02:20:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_cEncoding): new Encoding class.
-
-	* encoding.c (rb_to_encoding, rb_to_encoding_index): helper functions.
-
-	* encoding.c (rb_obj_encoding): return Encoding object now.
-
-	* gc.c (garbage_collect): mark Encoding objects.
-
-	* inits.c (rb_call_inits): call Init_Encoding.
-
-	* string.c (rb_str_force_encoding): accept Encoding object as well as
-	  encoding name.
-
-	* include/ruby/encoding.h (rb_to_encoding_index, rb_to_encoding):
-	  prototypes.
-
-Sun Oct 14 01:03:30 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.open_http): fix :ssl_ca_cert option.
-
-Sat Oct 13 21:23:21 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (foletype_s_ole_classes,
-	  foletype_s_typelibs): refactoring.
-
-	* test/win32ole/test_win32ole_type.rb: add some test.
-
-	* ext/win32ole/win32ole.c (Init_win32ole): change method name
-	  WIN32OLE_TYPELIB.ole_types from WIN32OLE_TYPELIB.ole_classes.
-
-	* test/win32ole/test_win32ole_typelib.rb: ditto.
-
-	* test/win32ole/test_folderitem2_invokeverb.rb: check create
-	  shortcut string more strictly (This test is invoked in Japanese
-	  Windows environment).
-
-Sat Oct 13 09:11:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (set_file_encoding): case-insensitive search, a patch from
-	  David Flanagan <david AT davidflanagan.com> [ruby-core:12629]
-
-Sat Oct 13 09:02:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc,win}32/mkexports.rb: explicit data.  [ruby-list:44108]
-
-Sat Oct 13 00:17:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/document.rb (REXML::Document::write): leaky
-	  modification trans -> transitive.  [ruby-dev:32040]
-
-Sat Oct 13 00:00:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: encoding specifier should work if the line matches
-	  /coding[:=] ?/, a la Python PEP-263, so that VIM comments like
-	  "# vim: set fileencoding=<encoding name>" should be recognized.
-
-Fri Oct 12 15:04:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (magic_comments): add "encoding" as same as "coding".
-
-	* parse.y (set_file_encoding): special file encoding handling.
-
-	* parse.y (parser_yylex): ditto.
-
-Fri Oct 12 12:44:11 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_combination): fixed memory corruption due to too
-	  small memory allocation
-
-	* array.c (rb_ary_product): accessing out of memory bounds.
-	  condition fixed.
-
-Fri Oct 12 11:22:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (match_values_at): make #select to be alias to #values_at
-	  to adapt RDoc description.  [ruby-core:12588]
-
-Thu Oct 11 21:10:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/node.h (NOEX_LOCAL): remove unused local visibility.
-
-	* class.c (ins_methods_push): ditto.
-
-	* class.c (rb_class_local_methods): method removed.
-
-Thu Oct 11 14:29:31 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* */Makefile.sub (COMMON_MACROS): workaround for old SDK's bug.
-	  [ruby-core:12584]
-
-Thu Oct 11 06:35:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, */Makefile.sub (VPATH): add enc directory.
-
-	* common.mk (ENCOBJS): encoding objects.
-
-	* enc: directory for encodings.
-
-Thu Oct 11 00:04:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add OnigEncoding
-	  parameter to every function members.
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add auxiliary
-	  data member to provide user defined data for an encoding.
-
-Wed Oct 10 23:32:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_quote): no longer takes optional second argument
-	  that has never been documented.
-
-Wed Oct 10 15:39:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_init): don't alias iso-8859-1 to ascii.
-
-	* ascii.c (OnigEncodingASCII): change the name US-ASCII to ASCII-8BIT.
-
-Wed Oct 10 14:31:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_enc_str_coderange): fixed check for non-ascii.
-
-Tue Oct  9 21:35:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_permutation, rb_ary_combination): missing type
-	  names.
-
-	* array.c (rb_ary_permutation): used buffer should be t1.
-
-	* array.c (rb_ary_permutation): use frozen shared hidden array.
-	  [ruby-dev:31985]
-
-Tue Oct  9 16:58:10 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c: remove to_a completely.
-
-	* array.c (tmpbuf): keep DRY to clear klass of temporary objects.
-
-Tue Oct  9 16:33:32 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_permutation, rb_ary_combination, rb_ary_product):
-	  hide internal buffer objects.  [ruby-dev:31982]
-
-Tue Oct  9 16:00:32 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_read_escape, parser_tokadd_escape): check code range.
-	  [ruby-dev:31980]
-
-Tue Oct  9 15:40:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (STR_NEW3): check for if single byte sequence.
-
-Mon Oct  8 20:06:29 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/imap.rb, lib/net/smtp.rb, lib/net/pop.rb: hostname should
-	  be verified against server's identity as presented in the server's
-	  certificate. [ruby-dev:31960]
-
-	* ext/openssl/lib/net/telnets.rb, ext/openssl/lib/net/ftptls.rb: ditto.
-
-Sun Oct  7 22:37:47 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_taxonomy.rb, test/rss/test_parser_1.0.rb,
-	  test/rss/test_image.rb, test/rss/rss-testcase.rb: ensured
-	  declaring XML namespaces.
-
-Sun Oct  7 22:00:01 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/node.h: make node flags as VALUE type.
-	  enum ruby_node_flags removed.
-
-	* ruby.c: define RUBY_NODE_* as const for gdb.
-
-Sun Oct  7 18:57:12 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h: enum ruby_value_flags removed.  [ruby-dev:31959]
-
-	* ruby.c: define RUBY_FL_* as const VALUE for gdb.
-
-Sun Oct  7 17:50:14 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/http.rb: remove enable_post_connection_check flag.
-
-	* lib/open-uri.rb: ditto.
-
-Sun Oct  7 15:48:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (opt_eq): fix to use rb_str_equal().
-
-Sat Oct  6 23:14:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_to_i): update RDoc since base can be any value
-	  between 2 and 36.  [ruby-talk:272879]
-
-Sat Oct  6 16:24:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_free): check Fiber or Continuation.
-
-	* bootstraptest/test_knownbug.rb: remove a fixed test.
-
-Sat Oct  6 14:56:02 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register): returns new index or -1 if failed.
-
-	* encoding.c (rb_enc_alias): check if original name is registered.
-
-	* encoding.c (rb_enc_init): register in same order as kcode options in
-	  re.c.  added new aliases.
-
-	* string.c (rb_str_force_encoding): check if valid encoding name.
-
-Sat Oct  6 14:32:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (opt_eq): get rid of gcc bug.
-
-Sat Oct  6 02:34:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/defines.h: no longer provide DEFAULT_KCODE.
-
-Fri Oct  5 21:24:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_union_m): Regexp.union accepts single argument which
-	  is an array of patterns.  [ruby-list:44084]
-
-Fri Oct  5 16:42:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_not_match): new method.
-
-Fri Oct  5 16:15:52 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in: Turn on --enable-pthread by default for FreeBSD
-	  5.2.1-RELEASE and later, and remove pthread support for older
-	  versions which has never worked perfectly.
-
-Fri Oct  5 16:11:50 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* time.c (time_to_s): Fix documentation.  Time format changed.
-
-Fri Oct  5 04:02:39 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (in_addr, in6_addr, addr_mask): Make some minor
-	  code optimization.
-
-Fri Oct  5 03:25:51 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (<=>): Implement IPAddr#<=> and make IPAddr
-	  comparable.
-
-	* lib/ipaddr.rb (succ): Implement IPAddr#succ.  You can now create
-	  a range between two IPAddr's, which (Range) object is
-	  enumerable.
-
-	* lib/ipaddr.rb (to_range): A new method to create a Range object
-	  for the (network) address.
-
-Fri Oct  5 03:14:45 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (coerce_other): Support type coercion and make &,
-	  |, == and include? accept a string or an integer instead of an
-	  IPAddr object as the argument.
-
-	* lib/ipaddr.rb (initialize): Give better error messages.
-
-	* lib/ipaddr.rb: Improve documentation.
-
-Thu Oct  4 20:45:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (Init_process): win32 has our own WNOHANG definition, so
-	  remove unnecessary #ifdef guard.
-
-Thu Oct  4 20:17:19 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* array.c (rb_ary_permutation, rb_ary_product): support non C99
-	  compilers.
-
-Thu Oct  4 17:33:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (kcode_setter): Perl-ish global variable `$=' no longer
-	  effective.
-
-	* io.c (Init_IO): remove obsolete variables: $defout, $deferr.
-
-	* re.c (Init_Regexp): remove obsolete const alias: MatchingData.
-
-	* time.c (Init_Time): remove obsolete Time::times.
-
-	* re.c (ignorecase_setter): change warning message.
-
-	* re.c (ignorecase_getter): now gives warning.
-
-	* string.c (rb_str_cmp_m): update RDoc document.
-
-	* re.c (kcode_setter): restore erroneously removed setter.
-
-Thu Oct  4 16:28:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_obj_encoding): returns encoding of the given object.
-
-	* parse.y (reg_compile_gen): copy encoding from source string if
-	  non-empty.
-
-	* re.c (Init_Regexp): new method Regexp#encoding.
-
-	* string.c (str_encoding): moved to encoding.c
-
-Thu Oct  4 15:49:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_permutation): remove C99 dependency.
-	  [ruby-dev:31934]
-
-	* array.c (rb_ary_product): ditto.
-
-Wed Oct  3 23:37:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/nkf/nkf.c, bin/ri, bin/irb: fixed typos in doc and comments.
-	  a patch from Eugene Ossintsev  <eugoss AT gmail.com>.
-	  [ruby-core:12375]
-
-Wed Oct  3 17:56:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: enable specify label to executable.
-	  (-e "ruby1::/path/to/ruby1; ruby2::/path/to/ruby2; ...")
-
-Wed Oct  3 16:58:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_str_new, parser_yylex, rb_intern3): set code-range
-	  bits.
-
-	* parse.y (parser_tokadd_string): check code-range.
-
-	* parse.y (parser_parse_string, parser_here_document): ditto.
-
-	* parse.y (parser_set_encode): check if valid encoding.
-
-Wed Oct  3 15:43:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_cvar_set): check whether class variable is
-	  defined in superclasses.  root classes have higher priority.
-	  removes lower class variable entry from IV_TBL (if it's defined
-	  in classes, not modules).
-
-	* variable.c (rb_cvar_get): ditto.
-
-Wed Oct  3 10:06:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_process_options): push frame with program name.
-	  [ruby-core:12351]
-
-Tue Oct  2 20:16:55 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_env): refactoring. remove unused code.
-
-Tue Oct  2 12:30:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_product): generalized product, now takes
-	  arbitrary number of arrays.  a patch from David Flanagan
-	  <david AT davidflanagan.com>.  [ruby-core:12346]
-
-Tue Oct  2 08:25:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_permutation): implementation contributed from
-	  David Flanagan.  [ruby-core:12344]
-
-	* array.c (rb_ary_combination): RDoc update to clarify.  a patch
-	  from David Flanagan.  [ruby-core:12344]
-
-	* array.c (rb_ary_permutation): small dirty hack by Matz to avoid
-	  arrays on stack.
-
-Tue Oct  2 07:01:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_dup): proc->block.proc should be self.
-
-	* bootstraptest/test_knownbug.rb, test_method.rb:
-	  move a fixed test.
-
-Mon Oct  1 16:17:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/test_method.rb: use assert_normal_exit to test
-	  [ruby-dev:31818].
-
-Mon Oct  1 15:57:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (id2ref): skip ICLASS.
-
-Mon Oct  1 15:29:35 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_normal_exit): use `` instead of
-	  system.
-
-Mon Oct  1 15:17:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (id2ref): T_VALUES is less than T_BLOCK.  [ruby-dev:31911]
-
-Mon Oct  1 10:58:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (require_libraries): use require method instead of calling
-	  rb_require directly.  [ruby-dev:31322]
-
-Mon Oct  1 10:52:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_options), ruby.c (proc_options, process_options): not
-	  call exit(2) directly.  [ruby-dev:31912]
-
-	* eval.c (ruby_run_node): deal with direct exit code.
-
-Sun Sep 30 17:12:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_append): always set encoding, and coderange
-	  cache bits.
-
-	* include/ruby/encoding.h (ENC_CODERANGE_SET): fixed a bug not to
-	  set cache bits.
-
-Sun Sep 30 11:52:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (pretty): don't show beginning empty line.
-
-Sun Sep 30 11:32:34 2007  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c: use #ifdef for test LONG_LONG_VALUE.
-
-Sun Sep 30 04:30:55 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c: use SIZEOF_LONG instead of SIZEOF_ULONG which is not
-	  defined.
-
-Sun Sep 30 04:03:43 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (Init_Regexp): test DEFAULT_KCODE in C code because
-	  KCODE_EUC, etc. are enum.
-
-Sun Sep 30 00:55:40 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* variable.c (obj_ivar_each): get rid of warning.
-
-Sat Sep 29 17:45:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* main.c (main): use platform-independent per-process initialization.
-	  [ruby-dev:31900]
-
-	* ruby.c (ruby_sysinit): new function for per-process initialization.
-
-	* include/ruby/ruby.h (RUBY_GLOBAL_SETUP): toplevel setup declaration.
-
-	* include/ruby/win32.h, win32/mkexports.rb: alias NtInitialize
-	  ruby_sysinit.
-
-	* win32/win32.c (rb_w32_sysinit): renamed from NtInitialize.
-
-Sat Sep 29 17:31:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_combination): new method to give all combination
-	  of elements from an array.  [ruby-list:42671]
-
-	* array.c (rb_ary_product): a new method to get all combinations
-	  of elements from two arrays.  can be extended to combinations of
-	  n-arrays, e.g. a.product(b,c,d).  anyone volunteer?
-
-	* array.c (rb_ary_permutation): empty function body to calculate
-	  permutations of array elements.  need volunteer.
-
-Sat Sep 29 17:14:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_leave): move proc invocation from r_entry() to
-	  avoid potential crash.
-
-Sat Sep 29 12:28:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_normal_exit): new method.
-
-	* bootstraptest/test_knownbug.rb: add test for Marshal.load.
-
-Sat Sep 29 10:12:20 2007  Tanaka Akira  <akr@fsij.org>
-
-	* variable.c (rb_ivar_set): fix class instance variable.
-
-	* object.c (rb_class_real): cl argument may be 0.
-
-Sat Sep 29 09:12:02 2007  Tanaka Akira  <akr@fsij.org>
-
-	* object.c (rb_class_real): use BUILTIN_TYPE instead of TYPE.
-	  access flags directly instead of FL_TEST.
-	  they are enough because cl argument is a class.
-
-Sat Sep 29 08:57:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h (strcasecmp): needed for type_strcasehash.
-
-Sat Sep 29 06:47:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (struct cmdline_options): static variables packed.
-
-Sat Sep 29 05:29:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_fdopen): create IO object from fd.
-
-	* parse.y (yycompile): use encoding of the source as default.
-
-	* ruby.c (proc_options, load_file): ditto.
-
-Sat Sep 29 04:27:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_alias): allow encodings multiple aliases.
-
-	* encoding.c (rb_enc_find_index): search the encoding which has the
-	  given name and return its index if found, or -1.
-
-	* st.c (type_strcasehash): case-insensitive string hash type.
-
-	* string.c (rb_str_force_encoding): force encoding of self.  this name
-	  comes from [ruby-dev:31894] by Martin Duerst.  [ruby-dev:31744]
-
-	* include/ruby/encoding.h (rb_enc_find_index, rb_enc_associate_index):
-	  prototyped.
-
-	* include/ruby/encoding.h (rb_enc_isctype): direct interface to ctype.
-
-	* include/ruby/st.h (st_init_strcasetable): prototyped.
-
-Sat Sep 29 03:53:26 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: Thread local storage should be fiber local.
-
-	* bootstraptest/test_knownbug.rb, test/ruby/test_fiber.rb:
-	  move a fixed test.
-
-Fri Sep 28 23:15:31 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insnhelper.ci (vm_call_method): allow send! to call protected
-	  methods as well.  [ruby-core:12280]
-
-Fri Sep 28 22:33:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_so_fasta.rb: added.
-
-	* benchmark/bm_so_k_nucleotide.rb: added.
-
-	* benchmark/bm_so_reverse_complement.rb: added.
-
-	* benchmark/make_fasta_output.rb: added.
-
-	* benchmark/prepare_so_k_nucleotide.rb: added.
-
-	* benchmark/prepare_so_reverse_complement.rb: added.
-
-Fri Sep 28 19:14:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix notations.
-
-	* benchmark/bm_loop_whileloop.rb: ditto.
-
-	* benchmark/bm_loop_whileloop2.rb: ditto.
-
-	* benchmark/bm_app_uri.rb: added.
-
-	* benchmark/bm_vm1_ivar_set.rb: ditto.
-
-	* benchmark/bm_so_binary_trees.rb: added from Computer Language
-	  Benchmarks Game (http://shootout.alioth.debian.org/).
-
-	* benchmark/bm_so_fannkuch.rb: ditto.
-
-	* benchmark/bm_so_mandelbrot.rb: ditto.
-
-	* benchmark/bm_so_meteor_contest.rb: ditto.
-
-	* benchmark/bm_so_nbody.rb: ditto.
-
-	* benchmark/bm_so_nsieve.rb: ditto.
-
-	* benchmark/bm_so_nsieve_bits.rb: ditto.
-
-	* benchmark/bm_so_partial_sums.rb: ditto.
-
-	* benchmark/bm_so_pidigits.rb: ditto.
-
-	* benchmark/bm_so_spectralnorm.rb: ditto.
-
-Fri Sep 28 16:22:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_core.h (rb_vm_struct): fix typo: bufferd -> buffered.
-
-Fri Sep 28 15:47:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix to output benchmark results
-	  to file "bmlog-#{Time.now.strftime('%Y%m%d-%H%M%S')}.#{$$}".
-
-	* benchmark/bm_io_file_create.rb: remove useless codes.
-
-	* benchmark/bm_vm2_eval.rb: added.
-
-Fri Sep 28 15:05:24 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h: export rb_ivar_foreach.
-
-	* include/ruby/ruby.h: modify struct RObject and RClass for optimizing
-	  T_OBJECT space.  [ruby-dev:31853]
-	  (ROBJECT_LEN, ROBJECT_PTR)
-	  (RCLASS_IV_TBL, RCLASS_M_TBL, RCLASS_SUPER, RCLASS_IV_INDEX_TBL)
-	  (RMODULE_IV_TBL, RMODULE_M_TBL, RMODULE_SUPER): abstract accessor
-	  defined.
-
-	* variable.c: support the modified RObject and RClass.
-
-	* object.c: ditto.
-
-	* class.c: ditto.
-
-	* gc.c: ditto.
-
-	* marshal.c: ditto.
-
-	* eval_method.ci: use the abstract accessor.
-
-	* insns.def: ditto.
-
-	* proc.c: ditto.
-
-	* struct.c: ditto.
-
-	* eval.c: ditto.
-
-	* error.c: ditto.
-
-	* vm.c: ditto.
-
-	* insnhelper.ci: ditto.
-
-	* ext/digest/digest.c: ditto.
-
-Fri Sep 28 13:20:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast, rb_io_getline_1): set encoding to the
-	  result string, as well as getc.
-
-Fri Sep 28 12:51:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_app_erb.rb: added.
-
-	* benchmark/bm_io_file_(create|read|write).rb: added.
-
-Fri Sep 28 12:49:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix file selection algorithm.
-
-Fri Sep 28 02:05:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): need not to check asciicompat here.
-
-	* encoding.c (rb_enc_check): ditto.
-
-	* string.c (rb_enc_str_coderange): tuned a bit; no broken check.
-
-	* encoding.c (rb_enc_check): new encoding comparison criteria.
-
-Thu Sep 27 17:36:28 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/REAMDE.win32: follow recent changes.
-
-Thu Sep 27 16:01:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix to output some helpful messages.
-
-Thu Sep 27 15:44:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: added.
-
-	* common.mk: fix to use above driver.
-
-	* benchmark/prepare_so_count_words.rb: added.
-
-	* benchmark/bm_so_count_words.rb: fix benchmark process.
-
-Thu Sep 27 15:42:34 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/fiber/fiber.c: modify prototype declaration.
-	  [ruby-core:12247]
-
-Thu Sep 27 09:42:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (strings, xstring, regexp, dsym): empty strings have
-	  US-ASCII encoding.
-
-Thu Sep 27 07:39:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_finish): new method.
-
-	* bootstraptest/test_knownbug.rb: add test for [ruby-dev:31866] using
-	  assert_finish.
-
-Thu Sep 27 04:46:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index): deal with ASCII compatible
-	  flags.
-
-	* encoding.c (rb_enc_check): allow ASCII compatible strings.
-
-	* parse.y (rb_intern_str): use ASCII encoding for ASCII string.
-
-	* string.c (rb_enc_str_coderange): check for code-range.
-
-	* string.c (rb_str_modify): clear code-range flags.
-
-	* string.c (rb_str_hash, rb_str_eql): ASCII compatible strings are
-	  comparable.
-
-	* include/ruby/encoding.h: added code-range flags.
-
-Thu Sep 27 04:40:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_mark_set): new function to mark keys.
-
-	* marshal.c (struct dump_arg, struct load_arg): added wrappers to mark
-	  data and compat_tbl entries.  [ruby-dev:31870]
-
-Thu Sep 27 03:17:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_waitpid): no needs to poll.  [ruby-dev:31871]
-
-Wed Sep 26 20:11:46 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: remove a fixed test.
-
-Wed Sep 26 20:00:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move fixed tests.
-
-	* bootstraptest/test_method.rb: ditto.
-
-	* test/ruby/test_io.rb: ditto.
-
-Wed Sep 26 19:36:26 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (eval): fix to check stack overflow.
-	  [ruby-dev:31850]
-
-	* eval_intern.h, vm.h: move CHECK_STACK_OVERFLOW() macro.
-
-Wed Sep 26 19:27:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_throw): fix to move increment point.
-	  [ruby-dev:31840]
-
-Wed Sep 26 19:23:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: Fiber as SemiCoroutine on default. [ruby-core:12146]
-
-	* ext/fiber/fiber.c: enable Fiber#transfer.
-
-Wed Sep 26 18:38:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_check): check for ASCII-compatibilities.
-
-	* parse.y (parser_tokadd_string, parser_parse_string,
-	  parser_here_document, parser_yylex): set encoding to US-ASCII.
-
-	* parse.y (rb_enc_symname_p): check if valid with encoding.
-
-	* parse.y (rb_intern3): let symbols have encoding.
-
-	* string.c (rb_str_hash): add encoding index.
-
-	* string.c (rb_str_comparable, rb_str_equal, rb_str_eql): check if
-	  compatible encoding.
-
-	* string.c (sym_inspect): made encoding aware.
-
-	* insns.def (opt_eq): compare with encoding.
-
-	* include/ruby/encoding.h (rb_enc_asciicompat): check if ASCII
-	  compatible.
-
-	* include/ruby/encoding.h (rb_enc_get_index): added prototype.
-
-	* include/ruby/intern.h (rb_str_comparable, rb_str_equal): ditto.
-
-Wed Sep 26 15:01:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_get_alloc_func): cast to suppress a warning.
-
-	* eval_method.ci (remove_method): local variable to be initialized.
-
-Wed Sep 26 08:36:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (ext/extinit.o): use $(OUTFLAG) as well as other
-	  objects.  [ruby-Bugs-14228]
-
-Wed Sep 26 05:12:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yyerror): limit error message length.
-	  [ruby-dev:31848]
-
-Tue Sep 25 15:11:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_ungetc): reallocate internal buffer if pushing data
-	  excess capacity.  [ruby-dev:31650]
-
-Tue Sep 25 13:43:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.ci (remove_method): should not remove undef place
-	  holder.  [ruby-dev:31816], [ruby-dev:31817]
-
-Tue Sep 25 09:51:31 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_longjmp): source file information may be NULL.
-	  [ruby-dev:31849]
-
-	* eval.c (ruby_finalize_0): clear trace_func before finalization.
-
-Mon Sep 24 22:36:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_equal): should handle recursive array.
-
-	* hash.c (hash_equal): should handle recursive hash.
-
-Mon Sep 24 22:14:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/weakref.rb (WeakRef): remove debug print.  [ruby-dev:31799]
-
-	* hash.c (hash_i): avoid too frequent hash conflict where key and
-	  value are same.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.
-	  [ruby-dev:31802]
-
-Mon Sep 24 17:56:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/strscan/strscan.c (strscan_initialize, strscan_getch): use the
-	  encoding of the target string instead of setting to StringScanner
-	  instance.  [ruby-dev:31831]
-
-Mon Sep 24 16:52:11 2007  Urabe Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/net/http.rb: fix typo.
-
-Mon Sep 24 06:49:15 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/http.rb: an SSL verification (the server hostname should
-	  be matched with its certificate's commonName) is added.
-	  this verification can be skipped by
-	  "Net::HTTP#enable_post_connection_check=(false)".
-	  suggested by Chris Clark <cclark at isecpartners.com>
-
-	* lib/net/open-uri.rb: use Net::HTTP#enable_post_connection_check to
-	  perform SSL post connection check.
-
-	* ext/openssl/lib/openssl/ssl.c
-	  (OpenSSL::SSL::SSLSocket#post_connection_check): refine error message.
-
-Sun Sep 23 09:05:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (os_obj_of, os_each_obj): hide objects to be finalized.
-	  [ruby-dev:31810]
-
-Sun Sep 23 08:58:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_attr): should not use alloca for unknown size
-	  input.  [ruby-dev:31818]
-
-	* parse.y (rb_intern_str): prevent str from optimization.
-
-Sun Sep 23 06:16:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (remove_method): check for undefined method.
-	  [ruby-dev:31816]
-
-Sun Sep 23 05:42:35 2007  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/rdoc/options.rb (Options::check_diagram): dot -V output
-	  changed. [ ruby-Bugs-11978 ], Thanks Florian Frank.
-
-Sat Sep 22 06:02:11 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::List::summarize): use each_line if
-	  defined rather than each.  [ruby-Patches-14096]
-
-Sat Sep 22 05:19:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_init): separate from strio_initialize
-	  to share with strio_reopen properly.  [ruby-Bugs-13919]
-
-Fri Sep 21 14:51:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_mark_rest): copy just used part.
-
-	* gc.c (gc_mark_children): mark u1 and u2 of NODE_ARGSCAT.
-
-	* gc.c (os_obj_of): hide T_VALUES too.  [ruby-dev:31804]
-
-	* gc.c (run_final): freeze temporary argument array.
-
-Fri Sep 21 04:58:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-label-indent): fix for function top
-	  level labels.
-
-Fri Sep 21 02:11:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_match_m): evaluate a block if match.  it would make
-	  condition statement much shorter, if no else clause is needed.
-
-	* string.c (rb_str_match_m): ditto.
-
-Fri Sep 21 02:02:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (hash_equal): should call rb_eql when argument eql is set.
-
-Thu Sep 20 17:28:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (popen_exec), process.c (rb_spawn): stop other threads before
-	  exec.  [ruby-core:08262]
-
-Tue Sep 18 22:08:42 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/matrix.rb: fix a coerce bug of Vector. [ruby-core: 12190]
-
-Mon Sep 17 21:06:03 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTP::GenericRequest#initialize): check path is
-	  not nil. [ruby-dev:31149]
-
-Mon Sep 17 21:00:51 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (ripper): rename event: arglist_* -> args_*.
-
-	* parse.y (ripper): rename event: restparam -> rest_param.
-
-	* parse.y (ripper): rename event: constpath_* -> const_path_*.
-
-	* parse.y (ripper): rename event: topconst_* -> top_const_*.
-
-	* parse.y (ripper): rename event: iter_block -> method_add_block.
-
-	* parse.y (ripper): support block local parameter declaration.
-
-	* parse.y (ripper): introduce new macro params_new.
-
-	* ext/ripper/lib/ripper/sexp.rb: should not dispose event
-	  arguments whose name ends with "_new" but arity != 0.
-
-Sat Sep 15 23:36:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (struct parser_params): common members in the parser and
-	  ripper must be placed at each same location.
-
-Sat Sep 15 18:25:15 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* string.c (rb_str_rstrip_bang): fixed too much rstrip. [ruby-dev:31786]
-
-Sat Sep 15 17:32:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_initialize): set default encoding.  [ruby-dev:31787]
-
-	* ruby.c (load_file): make new parse instance after processing shebang
-	  line options.
-
-Sat Sep 15 17:04:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index, rb_enc_get_index): check if
-	  object is encoding capable.  [ruby-dev:31780]
-
-	* string.c (rb_str_subpat_set): check for if the argument is a String.
-
-Sat Sep 15 13:31:21 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss.rb, lib/rss/, test/rss/:
-	  - 0.1.9 -> 0.2.0.
-	  - supported Slash module.
-
-Fri Sep 14 22:20:01 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fev_unadvise): no needs to reset
-	  event handlers.
-
-Fri Sep 14 17:28:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_io.rb: tests which cause SEGV should not be
-	  added.
-
-	* bootstraptest/test_knownbug.rb: add above test to known bug.
-
-Fri Sep 14 16:24:04 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_expandarray): assignment should be placed
-	  after creating new array.
-
-Fri Sep 14 16:17:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: add a stress test (-s).
-
-Fri Sep 14 16:14:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.h, eval_intern.h: move some macros to eval_intern.h.
-
-	* eval_jump.ci (rb_f_throw): fix to use NEW_THROW_OBJECT().
-
-	* eval.c (rb_f_loop): remove additional macro.
-
-Fri Sep 14 16:12:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_expandarray): should be volatile value for GC.
-
-Thu Sep 13 15:42:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): inline cache entries are overwritten
-	  in iseq_build_body().
-
-Thu Sep 13 14:00:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (brace_block): should use compstmt.  patch submitted by
-	  Kirill A. Shutemov <k.shutemov AT gmail.com>  [ruby-core:12154].
-
-Thu Sep 13 13:47:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_id2str): fixed typo.
-
-Wed Sep 12 23:12:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): -W should be allowed in RUBYOPT
-	  environment variable.  [ruby-core:12118]
-
-Wed Sep 12 15:19:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_s_sysopen): should not use alloca for unknown size
-	  input.  [ruby-dev:31775]
-
-	* parse.y (rb_id2str): ditto.
-
-	* marshal.c (w_float): use snprintf instead of sprintf.
-
-Tue Sep 11 17:28:00 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb (Tempfile::make_tmpname): Allow to specify a
-	  suffix for a temporary file name.
-
-	* lib/tempfile.rb (Tempfile::make_tmpname): Make temporary file
-	  names less predictable by including a random string.
-	  [inspired by: akr]
-
-Tue Sep 11 17:25:59 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/shellwords.rb: Add shellescape() and shelljoin().
-
-	* lib/shellwords.rb: Rename shellwords() to shellsplit() and make
-	  the former an alias to the latter.
-
-	* lib/shellwords.rb: Add escape(), split(), join() as class
-	  methods, which are aliases to their respective long names
-	  prefixed with `shell'.
-
-	* lib/shellwords.rb: Add String#shellescape(), String#shellsplit()
-	  and Array#shelljoin() for convenience.
-
-Mon Sep 10 15:48:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* range.c: represent initialized state using EXCL instead of FL_USER3.
-
-	* range.c (range_dumper): make uninitialized range dumpable.
-	  (range_loader): make uninitialized range loadable.
-
-Mon Sep 10 13:44:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_cycle): avoid infinite loop for empty array.
-	  based on a patch from David Flanagan.  [ruby-core:12085]
-
-Mon Sep 10 01:21:23 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object0): struct allocation first to check if a
-	  class is a struct.  compatibility check should come next.
-
-Mon Sep 10 01:05:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): fixed integer overflow.  [ruby-dev:31763]
-
-Sun Sep  9 08:57:27 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_strptime): now also attaches an element
-	  which denotes leftover substring if exists.
-
-Sun Sep  9 01:59:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (r_object0): check T_STRUCT type for structs.
-
-Sun Sep  9 01:17:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (r_object0): don't call user-defined initialize for
-	  T_STRUCT objects.
-
-	* include/ruby/intern.h (rb_struct_initialize): declared.
-
-	* struct.c (rb_struct_initialize): export.
-
-Sat Sep  8 23:55:56 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval_method.ci (rb_get_alloc_func): new function to get allocation
-	  function.
-
-	* include/ruby/intern.h (rb_alloc_func_t): declared.
-	  (rb_define_alloc_func): declared.
-	  (rb_marshal_define_compat): declared.
-
-	* range.c: use T_STRUCT for Range.
-
-	* inits.c: move Init_marshal() prior to Init_Range() because
-	  Init_Range calls rb_marshal_define_compat which needs
-	  marshal's compat_allocator_tbl initialized.
-
-	* marshal.c: support marshal format compatibility layer designed for
-	  marshaling T_STRUCT Range using T_OBJECT format.
-	  (rb_marshal_define_compat): defined.
-
-	[ruby-dev:31710]
-
-Sat Sep  8 10:05:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_members): check if __members__ is an
-	  array to prevent segmentation fault.  [ruby-dev:31759]
-
-Sat Sep  8 09:33:09 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (str[fp]time): now check specifications more
-	  strictly.
-
-Sat Sep  8 02:56:31 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_fiber.rb (TestFiber::test_throw): uncaught throw
-	  now raise ArgumentError exception.
-
-Sat Sep  8 02:45:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_members): should raise TypeError instead
-	  of call rb_bug().  [ruby-dev:31709]
-
-	* marshal.c (r_object0): no nil check require any more.
-
-Sat Sep  8 01:46:36 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regenc.c, regenc.h (onigenc_single_byte_mbc_enc_len): should take
-	  two arguments. [ruby-dev:31754]
-
-Fri Sep  7 00:58:16 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: fix typo.
-
-Fri Sep  7 00:28:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getc): forgot to commit rb_enc_mbclen() fix.
-
-	* ext/stringio/stringio.c (strio_getc): rb_enc_mbclen() fix.
-
-	* ext/stringio/stringio.c (strio_ungetc): ditto.
-
-Thu Sep  6 22:57:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::Entry_::copy): prevent self copy of
-	  directories.
-
-	* lib/fileutils.rb (FileUtils::fu_each_src_dest0): use try_convert.
-
-	* lib/fileutils.rb (FileUtils::fu_update_option): ditto.
-
-Thu Sep  6 21:36:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add end parameter
-	  to mbc_enc_len.
-
-	* euc_jp.c (mbc_enc_len), sjis.c (mbc_enc_len),
-	  utf8.c (utf8_mbc_enc_len): ditto.
-
-	* encoding.c (rb_enc_mbclen): add end parameter.
-
-Thu Sep  6 21:31:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_cycle): typo in rdoc.  a patch from Yugui
-	  <yugui@yugui.sakura.ne.jp>.  [ruby-dev:31748]
-
-Thu Sep  6 12:42:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ, rb_str_chop_bang, rb_str_chop): m17n support.
-	  [ruby-dev:31734]
-
-Wed Sep  5 22:02:27 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_subseq): need integer overflow check.
-	  [ruby-dev:31736]
-
-	* array.c (rb_ary_splice): ditto.  [ruby-dev:31737]
-
-	* array.c (rb_ary_fill): ditto.  [ruby-dev:31738]
-
-	* string.c (rb_str_splice): integer overflow for length.
-	  [ruby-dev:31739]
-
-Tue Sep  4 20:43:44 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_EVENT#unadvise.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Mon Sep  3 15:37:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (vm.o): depends on st.h too.
-
-Sun Sep  2 23:38:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/st.h (struct st_table): make num_entries bitfield
-	  instead of num_bins for speed.  num_entries has less access.
-
-Sun Sep  2 00:37:57 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_parse): improved parsing of ordinal dates.
-
-	* lib/date/format.rb (_parse): use named character classes in some
-	  regular expressions.
-
-Sat Sep  1 23:44:26 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_jump.ci (rb_f_throw): wrap tag and TAG_THROW in a NODE_MEMO
-	  node to make throw instruction to work well.
-
-Sat Sep  1 20:56:07 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (struct RBignum): embed digits in RBignum for
-	  small bignums.
-
-	* bignum.c: RBignum embedded digits implemented.
-
-	* include/ruby/intern.h: declare rb_big_resize.
-
-	* gc.c: don't free embedded digits.
-
-	* numeric.c: replace direct bignum field accessor by abstract field
-	  accessor such as RBIGNUM(val)->sign to RBIGNUM_SIGN(val).
-
-	* sprintf.c: ditto.
-
-	* compar.c: ditto.
-
-	* marshal.c: ditto.
-
-	* random.c: ditto.
-
-	* .gdbinit: support embedded small bignums.
-
-	[ruby-dev:31689]
-
-Sat Sep  1 19:59:43 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_event_free): IConnectionPoint should be
-	  released.
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Destructor): ITypeInfo should be
-	  released.
-
-	* ext/win32ole/win32ole.c (fev_initialize): refactoring.
-
-Sat Sep  1 16:26:09 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/socket/test_tcp.rb (test_recvfrom): same as mswin32 on mswin64.
-
-Sat Sep  1 14:24:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (st_numcmp, st_numhash): use st_data_t instead of long, because
-	  the former may be larger than the latter.
-
-	* include/ruby/st.h (CHAR_BIT): get rid of magic number.
-
-	* include/ruby/st.h (rb_index_t): use st_data_t for the platforms it
-	  is larger than int.
-
-Sat Sep  1 10:43:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_jump.ci (rb_f_catch): generate new tag object if no argument is
-	  given.  backported from MatzRuby.  [ruby-dev:31609]
-
-	* eval_jump.ci (rb_catch): call #catch without arguments if tag
-	  string is NULL.
-
-	* eval_jump.ci (rb_f_throw): allow throwing non-symbol object.
-
-	* eval_jump.ci (rb_catch_obj): new function to wait throw with arbitrary
-	  object.
-
-	* eval_jump.ci (rb_throw_obj): new function to throw arbitrary object.
-
-	* variable.c (check_autoload_table): prevent multiple calls from
-	  RSTRING_PTR().
-
-Fri Aug 31 07:12:24 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (SQRT_LONG_MAX): use SIZEOF_LONG instead of SIZEOF_VALUE
-	  because SIZEOF_VALUE > SIZEOF_LONG on some platforms.
-
-Fri Aug 31 04:18:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_norm_arg, f_arg_item): not croak already erred names.
-	  [ruby-dev:31687]
-
-	* parse.y (assignable_gen): ignore already erred names.
-
-	* parse.y (shadowing_lvar_gen): always make new block local variable
-	  when shadowing outer local variable.  [ruby-dev:31507]
-
-Thu Aug 30 19:40:33 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regenc.h: check RUBY_EXTERN before including config.h and defines.h
-
-	* common.mk: update header dependency.
-
-Thu Aug 30 14:06:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_obj_define_method): reverted.  [ruby-talk:266637]
-
-Thu Aug 30 13:49:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: initialize $top_srcdir always.  [ruby-dev:31682]
-
-	* lib/mkmf.rb (try_const, have_const): check for a const is defined.
-	  [ruby-core:04422]
-
-Thu Aug 30 08:00:12 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h: declare rb_hash_tbl.
-
-	* include/ruby/ruby.h (RHash): delay st_table allocation.
-	  rename tbl field to ntbl to detect direct reference to the st_table
-	  as a compile error.
-	  (RHASH_TBL): abstract accessor defined.
-	  (RHASH_ITER_LEV): ditto.
-	  (RHASH_IFNONE): ditto.
-	  (RHASH_SIZE): ditto.
-	  (RHASH_EMPTY_P): ditto.
-	  (hash_alloc0, hash_alloc): unified because hash_alloc doesn't
-	  allocate st_table now.
-
-	* hash.c: delay st_table allocation.
-
-	* gc.c: replace tbl by ntbl.
-
-	* array.c: replace direct field accessor by abstract field accessor
-	  such as RHASH(hash)->tbl to RHASH_TBL(hash).
-
-	* marshal.c: ditto.
-
-	* insns.def: ditto.
-
-	* ext/iconv/iconv.c: ditto.
-
-	* ext/json/ext/generator/generator.c: ditto.
-
-	* ext/json/ext/parser/parser.c: ditto.
-
-	* ext/json/ext/parser/parser.rl: ditto.
-
-	* ext/syck/rubyext.c: ditto.
-
-	* ext/tk/tkutil/tkutil.c: ditto.
-
-	[ruby-dev:31678]
-
-Wed Aug 29 18:36:06 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: add :ftp_active_mode option.  [ruby-dev:31677]
-
-Wed Aug 29 14:55:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): should not use mbclen2() which has broken API.
-
-	* re.c: remove rb_reg_mbclen2().
-
-Wed Aug 29 12:48:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (aref_args): args may not be a list.  [ruby-dev:31592]
-
-Wed Aug 29 11:30:10 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/st.h (struct st_table): add entries_packed 1-bit
-	  bitfield.  decrease num_bins 1-bit.
-
-	* st.c: pack numhash which have 5 or less entries in bins.
-	  (st_init_table_with_size): setup entries_packed flag.
-	  (st_clear): support packed mode.
-	  (st_lookup): ditto.
-	  (st_insert): ditto.
-	  (st_add_direct): ditto.
-	  (st_copy): ditto.
-	  (st_delete): ditto.
-	  (st_foreach): ditto.
-	  (st_reverse_foreach): ditto.
-	  (unpack_entries): new function for converting to unpacked mode.
-
-	[ruby-list:43954]
-
-Wed Aug 29 10:46:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/defines.h (flush_register_windows): call "ta 0x03"
-	  even on Linux/Sparc.  [ruby-dev:31674]
-
-Tue Aug 28 19:16:00 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_type_progid): progid getted by
-	  ProgIDFromCLSID should be freed by CoTaskMemFree. Thanks, arton.
-
-	* test/win32ole/test_win32ole.rb (test_raise_message): set negative
-	  compareMode value to raise WIN32OLERuntimeError.
-
-	* test/win32ole/test_win32ole_type.rb (test_implemented_ole_types):
-	  support some environment which returns IShellDispatch5 instead
-	  of IShellDispatch.
-
-Tue Aug 28 15:42:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_subseq): retrieve substring based on byte offset.
-
-	* string.c (rb_str_rindex_m): was confusing character offset and
-	  byte offset.
-
-Tue Aug 28 14:23:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_splice_0): should check to modify.  [ruby-dev:31665]
-
-Tue Aug 28 14:21:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_prepare): set parser encode too when BOM exists.
-
-Tue Aug 28 00:51:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: fix Mutex to be interruptable lock.
-
-	* thread_win32.ci, thread_win32.h, thread_pthread.ci, thread_pthread.h:
-	  prepare native_cond_*() which are based on pthread_cond_*() spec.
-
-	* prelude.rb: fix Mutex#synchronize method.
-
-	* vm_core.h, include/ruby/intern.h: change unblock function interface
-	  (to pass some user data).
-
-	* file.c, process.c: ditto.
-
-	* benchmark/bm_vm2_mutex.rb: add a benchmark for mutex.
-
-	* benchmark/bm_vm3_thread_mutex.rb: add a benchmark for mutex
-	  with contention.
-
-	* benchmark/run.rb: fix to remove ENV['RUBYLIB'] for matzruby.
-
-	* test/ruby/test_thread.rb: add a test.
-
-	* common.mk: fix benchmark options.
-
-Mon Aug 27 23:14:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): wrong strip point.  [ruby-dev:31652]
-
-	* string.c (rb_str_each_line): should swallow sequence of newlines
-	  if rs (optional argument) is an empty string.  [ruby-dev:31652]
-
-Mon Aug 27 22:39:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_codelen): raises invalid sequence exception
-	  if ONIGENC_CODE_TO_MBCLEN() returns zero.  [ruby-dev:31661]
-
-	* encoding.c (rb_enc_mbclen): check invalid sequence.
-
-Mon Aug 27 20:27:59 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_type_progid): fix the bug.
-	  [ruby-dev:31576]
-
-	* test/win32ole/test_win32ole_type.rb (test_initialize):
-	  remove duplicate assertions.
-
-Mon Aug 27 19:10:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getlogin): update documentation to note
-	  security issue.  [ruby-Bugs-11821]
-
-Mon Aug 27 15:56:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_encoding): return the encoding of a Symbol.
-
-Mon Aug 27 15:33:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (IEEE_BIG_ENDIAN): use configured value.  [ruby-dev:31623]
-
-	* util.c (Llong): set to LONG_LONG if available.
-
-Mon Aug 27 13:11:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): wrong condition for mbmaxlen==1 strings.
-	  [ruby-dev:31652]
-
-Mon Aug 27 00:41:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_each_byte): caused infinite loop.  [ruby-dev:31652]
-
-	* io.c (rb_io_getc): should return nil at EOF, not EOFError.
-
-	* lib/delegate.rb (SimpleDelegator::__setobj__): use raise
-	  argument to specify backtrace.
-
-	* test/ruby/test_fnmatch.rb (TestFnmatch::bracket_test):
-	  String#include? no longer works for Fixnum.  use #chr.
-	  [ruby-dev:31652]
-
-Sun Aug 26 12:27:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: fix to remove Fiber.new until fiber.so is not loaded.
-
-	* test/ruby/test_continuation.rb: fix to use resume.
-
-Sun Aug 26 06:51:46 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_wc2mb, reg_enum_key): allocate
-	  buffer should be NULL terminated.
-
-Sun Aug 26 06:04:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_setup_method): reorder code for branch prediction.
-
-Sun Aug 26 05:54:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_call_method): fix to relaxant safe level check
-	  ($SAFE > 2).  [ruby-core:11998]
-
-	* bootstraptest/test_method.rb: add tests for above.
-
-Sun Aug 26 05:52:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_fiber.rb: fix to require 'continuation'.
-
-Sat Aug 25 23:52:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_next): message changed.
-
-Sat Aug 25 23:22:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/encoding.h: remove unused rb_enc_ismbchar().
-
-Sat Aug 25 22:50:14 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_event_free, EVENTSINK_Destructor,
-	  fev_initialize): remove the connection ole_event_free and
-	  EVENTSINK_Destructor.
-
-Sat Aug 25 17:52:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* string.c, include/ruby/intern.h: export rb_str_length().
-
-	* insns.def: use rb_str_length() in opt_length.
-
-Sat Aug 25 17:48:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: rename FIBER_STACK_SIZE to FIBER_VM_STACK_SIZE.
-
-Sat Aug 25 17:05:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (swallow): removed condition using an unset variable.
-
-	* parse.y, re.c: re-applied revision 13092.
-
-	* string.c (rb_str_splice): return from void function.
-
-	* include/ruby/encoding.h (rb_enc_str_new): prototype added.
-
-Sat Aug 25 11:45:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c: provide basic features for M17N.
-
-	* parse.y: encoding aware parsing.
-
-	* parse.y (pragma_encoding): encoding specification pragma.
-
-	* parse.y (rb_intern3): encoding specified symbols.
-
-	* string.c (rb_str_length): length based on characters.
-	  for older behavior, bytesize method added.
-
-	* string.c (rb_str_index_m): index based on characters.  rindex as
-	  well.
-
-	* string.c (succ_char): encoding aware succeeding string.
-
-	* string.c (rb_str_reverse): reverse based on characters.
-
-	* string.c (rb_str_inspect): encoding aware string description.
-
-	* string.c (rb_str_upcase_bang): encoding aware case conversion.
-	  downcase, capitalize, swapcase as well.
-
-	* string.c (rb_str_tr_bang): tr based on characters.  delete,
-	  squeeze, tr_s, count as well.
-
-	* string.c (rb_str_split_m): split based on characters.
-
-	* string.c (rb_str_each_line): encoding aware each_line.
-
-	* string.c (rb_str_each_char): added.  iteration based on
-	  characters.
-
-	* string.c (rb_str_strip_bang): encoding aware whitespace
-	  stripping.  lstrip, rstrip as well.
-
-	* string.c (rb_str_justify): encoding aware justifying (ljust,
-	  rjust, center).
-
-	* string.c (str_encoding): get encoding attribute from a string.
-
-	* re.c (rb_reg_initialize): encoding aware regular expression
-
-	* sprintf.c (rb_str_format): formatting (i.e. length count) based
-	  on characters.
-
-	* io.c (rb_io_getc): getc to return one-character string.
-	  for older behavior, getbyte method added.
-
-	* ext/stringio/stringio.c (strio_getc): ditto.
-
-	* io.c (rb_io_ungetc): allow pushing arbitrary string at the
-	  current reading point.
-
-	* ext/stringio/stringio.c (strio_ungetc): ditto.
-
-	* ext/strscan/strscan.c: encoding support.
-
-Sat Aug 25 10:59:19 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: separate Continuation and Fiber from core.
-
-	* ext/continuation/*, ext/fiber/*: ditto.
-
-	* include/ruby/ruby.h: remove rb_cFiber.
-
-	* include/ruby/intern.h: add the rb_fiber_new() declaration.
-
-	* enumerator.c (next_init): fix to use rb_fiber_new().
-
-	* test/ruby/test_enumerator.rb: remove next? tests.
-
-	* test/ruby/test_continuation.rb: add a require 'continuation'.
-
-	* test/ruby/test_fiber.rb: add a require 'fiber'.
-
-Sat Aug 25 10:20:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (prelude.o): depends on vm_core.h now.
-
-	* common.mk (prelude.c): depends on tool/compile_prelude.rb too.
-
-	* common.mk (prereq): updates all auto-generated sources.
-
-	* tool/compile_prelude.rb: separated dynamic and static portions.
-
-Sat Aug 25 10:05:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* prelude.rb: add Thread.exclusive.  This class method
-	  is different from 1.8's.  Thread.exclusive only does
-	  synchronize with VM global mutex.
-
-Sat Aug 25 09:39:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_s_try_convert): more document description.
-
-	* re.c (rb_reg_s_try_convert): typo fixed.
-
-Sat Aug 25 08:54:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* id.h, id.c: remove idFuncall.
-
-	* compile.c (iseq_specialized_instruction): ditto.
-
-Sat Aug 25 08:47:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/compile_prelude.rb: fix to include "vm_core.h".
-
-Sat Aug 25 03:49:14 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/sentence.rb (Sentence): include Enumerable.
-	  (Sentence#each): defined.
-
-	* test/ruby/test_assignment.rb: use Sentence#expand.
-
-Sat Aug 25 03:08:57 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* prelude.rb: fix Mutex#synchronize definition.
-
-Sat Aug 25 02:08:45 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_s_try_convert): a new class method to convert
-	  object or nil if it's not target-type.  this mechanism is used
-	  to convert types in the C implemented methods.
-
-	* hash.c (rb_hash_s_try_convert): ditto.
-
-	* io.c (rb_io_s_try_convert): ditto.
-
-	* re.c (rb_reg_s_try_convert): ditto.
-
-	* string.c (rb_str_s_try_convert): ditto.
-
-Sat Aug 25 00:49:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_loop_generator.rb: added.
-
-Sat Aug 25 00:22:31 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* prelude.rb: added.  run this script on startup.
-
-	* tool/compile_prelude.rb: compile prelude.rb to C string.
-	  (prelude.rb -> prelude.c)
-
-	* common.mk: fix to build with prelude.c.
-
-	* inits.c (rb_call_inits): ditto.
-
-	* thread.c (Init_Thread): move definition of Mutex#synchronize
-	  to prelude.rb.
-
-Sat Aug 25 00:08:43 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (compile_massign_opt): fix to skip massign optimization
-	  with global variables.
-
-	* bootstraptest/test_massign.rb: add some tests for above.
-
-Fri Aug 24 18:42:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_dir.rb (TestDir::setup): ?c now makes a string.
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner::initialize):
-	  initialize @workdir to stop warning.
-
-Fri Aug 24 18:30:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/drb/drb.rb (DRb::DRbServer::InvokeMethod::perform_without_block):
-	  replace funcall by send!.  other files in the distribution as well.
-
-Fri Aug 24 17:06:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_send_bang): abandon the name funcall for private
-	  aware method call.
-
-Fri Aug 24 15:27:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_next): stop pre-fetching.
-
-	* enumerator.c (Init_Enumerator): remove next? method.
-
-Fri Aug 24 15:14:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_loop): now handles StopIteration exception.
-
-Thu Aug 23 20:31:31 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: optimize simple massign.
-
-Thu Aug 23 20:02:25 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (reg_get_value): use RegQueryValueEx instead
-	  of RegQueryValueEx.
-
-	* ext/win32ole/win32ole.c (typelib_file_from_clsid): fix the bug
-	  that the function always returns Qnil.
-
-	* test/win32ole/test_win32ole_type.rb (test_initialize): add some test.
-
-Thu Aug 23 17:25:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (group_member): check if presents.
-
-	* configure.in (XCFLAGS): add _GNU_SOURCE on linux.
-
-	* file.c (group_member): use system routine if available.
-
-	* process.c: moved _GNU_SOURCE macro to Makefile.
-
-Thu Aug 23 16:59:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (compile_massign), insnhelper.ci (vm_throw): not use C99
-	  comment.
-
-	* cont.c (rb_cont_call, fiber_switch, rb_fiber_resume, rb_fiber_yield):
-	  suppress warnings.
-
-	* cont.c (rb_fiber_start): change on non-volatile variable between
-	  setjmp and longjmp may not has an effect.
-
-	* enumerator.c (sym_call): initialize first.
-
-	* enumerator.c (enum_iter): typedefed.
-
-	* enumerator.c (next_i): suppress a warning.
-
-Thu Aug 23 16:04:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insns.def, parse.y: fix massign order.  This change
-	  causes performance problem.  Try vm1_swap benchmark.
-	  [ruby-dev:31522]
-
-	* insns.def, insnhelper.ci: move process body of expandarray insn to
-	  vm_expandarray().
-
-	* bootstraptest/test_knownbug.rb, bootstraptest/test_massign.rb:
-	  move a solved test.
-
-Thu Aug 23 15:51:19 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_norm_arg): ripper has no shadowing check.
-
-	* parse.y (f_block_arg): dispatch blkarg_mark.
-
-Thu Aug 23 15:48:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (make_masgn_lhs, iseq_compile_each): fixed indent.
-
-	* compile.c (iseq_translate_threaded_code),
-	  vm_evalbody.ci (get_insns_address_table),
-	  template/vmtc.inc.tmpl (insns_address_table): constified.
-
-	* vm_evalbody.ci (vm_eval),
-	  template/insns_info.inc.tmpl (insn_stack_increase, insn_ret_num):
-	  suppress warnings.
-
-Thu Aug 23 13:19:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_norm_arg): check also nested arguments.  [ruby-dev:31502]
-
-Thu Aug 23 00:06:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c: updated for ANSI C only.  applied a patch from
-	  <snakagawa AT infoteria.co.jp>.  [ruby-dev:31591]
-
-Thu Aug 23 00:04:45 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* missing/strtod.c: removed.  [ruby-dev:31588]
-
-	* LEGAL: updated.
-
-Wed Aug 22 15:59:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb:
-	  fix typo of filename (test_knownbug.rb).
-
-Wed Aug 22 14:04:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: added.  This file will contain
-	  test cases which point out known bug.  If bug is fixed, tests
-	  should move to the suitable place.
-
-	* bootstraptest/test_massign.rb: move a test which show known bug
-	  to test_knownbug.rb.
-
-Wed Aug 22 13:02:26 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (in_temporary_working_directory):
-	  don't remove the directory specified by --dir.
-
-Wed Aug 22 05:51:23 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): replaced by the implementation by David
-	  M. Gay inspired by William D. Clinger's paper "How to Read Floating
-	  Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 92-101].
-	  a patch from Satoshi Nakagawa <snakagawa AT infoteria.co.jp>.
-	  [ruby-dev:31582]
-
-	* test/ruby/test_float.rb (TestFloat::test_float): add test for
-	  precision.
-
-Wed Aug 22 03:51:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: add Fiber#resume and Fiber.yield.
-	  and Fiber::Core class to realize Coroutine.
-
-	* include/ruby/intern.h: declare rb_fiber_yield(), rb_fiber_resume().
-
-	* enumerator.c: use above api.
-
-	* test/ruby/test_fiber.rb: fix and add tests for above changes.
-
-Tue Aug 21 21:09:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/tmpdir.rb (Dir.mktmpdir): make directory suffix specifiable.
-	  suggested by knu.  [ruby-dev:31568]
-
-Tue Aug 21 15:00:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* st.c (st_clear): reset num_entries too.
-
-Tue Aug 21 13:57:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (st_foreach_func, rb_foreach_func): typedefed.
-
-	* hash.c (rb_hash_clear): use st_clear() unless iterating.
-
-	* st.c (struct st_table_entry): add new members, fore and back, to
-	  iterate in inserted order.
-
-	* include/ruby/st.h (struct st_table): ditto.
-
-Tue Aug 21 04:09:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm2_case.rb: add a new benchmark.
-	  YARV optimize case/when syntax.  If every conditions
-	  are literal (such as Symbol, Fixnum, String), dispatch
-	  calc order will be O(1).
-
-Tue Aug 21 04:08:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_enumerator.rb: fix last commit.
-
-Tue Aug 21 03:59:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test_enumerator.rb (enum_test): fix to return sorted
-	  array (for Hash test).
-
-Tue Aug 21 03:55:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* enumerator.c (next_i): fix to return with Fiber#yield at
-	  the end of each block.  [ruby-dev:31470]
-
-	* enumerator.c (enumerator_next_p): call init_next if not
-	  initialized.  [ruby-dev:31514]
-
-	* test/ruby/test_enumerator.rb: add tests for Enumerator.
-
-Mon Aug 20 23:28:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (Init_String): remove Symbol.intern and Symbol#dump.
-	  [ruby-dev:31525]
-
-	* dir.c (dir_foreach): return Enumerator if no block given.
-	  [ruby-dev:31525]
-
-	* io.c (rb_io_s_foreach): argument count check before making
-	  Enumerator.  [ruby-dev:31525]
-
-Mon Aug 20 23:17:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_thread_struct): removed first_func_arg and
-	  reuse first_args instead.
-
-Sun Aug 19 13:31:40 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c: use VALGRIND_MAKE_MEM_UNDEFINED to detect use of collected
-	  objects if valgrind is available.  It cannot detect first 2 words
-	  because they are used as the free list.
-
-Sun Aug 19 13:13:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each/NODE_RESBODY): fix to add
-	  additional nop to prevent tailcall optimization.
-
-	* vm_opts.h: clean up comments.
-
-Sun Aug 19 12:58:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_call_bmethod): fix to propagate information
-	  that this proc is "from Method".  [ruby-dev:31490]
-
-	* proc.c (method_proc, rb_mod_define_method): ditto.
-
-	* vm.c (vm_invoke_proc_core): removed.
-
-	* vm_core.h: ditto.
-
-Sun Aug 19 12:36:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/sentence.rb: new method Sentence().
-
-Sun Aug 19 12:32:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_callee_setup_arg): fix to mark enough VM stack.
-	  [ruby-dev:31492]
-
-Sat Aug 18 19:02:34 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_yield.rb (TestYieldGen): relax array size check
-	  in nested parameters.
-	  [ruby-dev:31485]
-
-Sat Aug 18 17:44:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/tcltklib.c (Init_tcltklib): use rb_set_end_proc().
-
-Sat Aug 18 17:40:11 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (is_ruby_native_thread): check properly.  [ruby-dev:31166]
-
-Sat Aug 18 16:44:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_call_bmethod),
-	  vm.c (vm_invoke_proc_core): fix to do not restore
-	  $SAFE when proc invoked by bmethod.
-
-	* vm_core.h: ditto.
-
-Sat Aug 18 16:44:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.ci (ruby_error_print): call error_print.
-
-	* eval_jump.ci, process.c (rb_exit, rb_f_exit, rb_f_abort): moved.
-
-Sat Aug 18 15:59:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (detach_process_watcher): should not pass the pointer
-	  to an auto variable to the thread to be created.  pointed and
-	  fix by KUBO Takehiro <kubo at jiubao.org>  [ruby-dev:30618]
-
-Sat Aug 18 15:52:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insnhelper.ci (vm_send_optimize): use MEMMOVE to shift values inside
-	  an array.
-
-Sat Aug 18 15:45:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insnhelper.ci (vm_yield_setup_args): rsize and psize should not be
-	  negative.
-
-Sat Aug 18 14:35:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insnhelper.ci (vm_callee_setup_arg, vm_send_optimize,
-	  vm_yield_setup_args): bulk copy for arguments.
-
-Sat Aug 18 13:55:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix to allow self.x=
-	  if x= is private.
-
-	* bootstraptest/test_method.rb: add a test for above.
-
-Sat Aug 18 14:05:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_compile_gen): obtain error info from errinfo.
-
-	* re.c (rb_reg_error_desc): make RegexpError for initialization error.
-
-	* re.c (rb_reg_compile): return nil and set errinfo if error.
-
-Sat Aug 18 13:23:01 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c: $! should not be writable.
-
-	* eval.c (rb_rubylevel_errinfo): added.  rb_errinfo() returns
-	  rb_thread_t#errinfo.  rb_rubylevel_errinfo() returns $! value.
-
-Sat Aug 18 13:14:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_callee_setup_arg): fix to check arguments
-	  correctly. [ruby-dev:31472]
-
-Sat Aug 18 13:13:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_exception.rb: add escape character ("\") for
-	  editors.
-
-Sat Aug 18 12:42:50 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_yield.rb (TestYieldGen): add test for yielding to
-	  lambda using lambda parameter passing emulator.
-
-Sat Aug 18 12:24:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sample/test.rb, test/ruby/test_system.rb(valid_syntax?): keep
-	  comment lines first.
-
-Sat Aug 18 11:44:59 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_set_arguments), insnhelper.ci
-	  (vm_callee_setup_arg, vm_yield_setup_args):
-	  fix to cause raise on "lambda{|a|}.call(1, 2)".
-	  [ruby-dev:31464]
-
-	* bootstraptest/test_block.rb: add tests for above.
-
-Sat Aug 18 01:12:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (frame_func_id): return proper method ID.
-
-Fri Aug 17 22:43:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): massign should return rvalue(s).
-
-Fri Aug 17 22:10:19 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_basicinstructions.rb: fix old tests.
-	  class variables should be inherited.
-
-Fri Aug 17 21:20:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_call), eval_method.ci (rb_add_method, rb_alias),
-	  insnhelper.ci (vm_call_method): fix to save safelevel for
-	  method node.
-
-	* include/ruby/node.h: ditto.
-
-	* bootstraptest/test_method.rb: add a test for above.
-
-Fri Aug 17 16:02:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_terminate_all): fix to ignore
-	  exceptions.
-
-	* thread.c (thread_start_func_2): fix
-	  abort_on_exception process.  [ruby-dev:31394]
-
-Fri Aug 17 14:38:36 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (in_temporary_working_directory): use
-	  Dir.mktmpdir to create and remove temporary directory.
-	  (Dir.mktmpdir): define if not available.
-	  [ruby-dev:31431]
-
-Fri Aug 17 03:07:37 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix throw insn option of next.
-
-Fri Aug 17 01:25:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_set_arguments), insnhelper.ci
-	  (vm_callee_setup_arg, vm_yield_setup_args): fix
-	  block parameter problems. [ruby-dev:31437], [ruby-dev:31440]
-
-	* bootstraptest/test_block.rb: add a test of [ruby-dev:31440].
-
-Fri Aug 17 01:24:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (ruby_iseq_disasm): fix to show arg_simple value.
-
-Fri Aug 17 01:21:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (throw): insert a RUBY_VM_CHECK_INTS(). [ruby-dev:31361]
-
-Thu Aug 16 20:40:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigtrunc): RBIGNUM(x)->len may be zero.  out of bound
-	  access.  [ruby-dev:31404]
-
-	* sprintf.c (rb_str_format): small float should not call
-	  rb_dbl2big().
-
-Thu Aug 16 22:10:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix next/redo stack consistency.
-	  [ruby-dev:31373]
-
-	* bootstraptest/test_syntax.rb: add tests for above.
-
-	* sample/test.rb: fix to use __FILE__ instead of $0 to know basedir.
-
-Thu Aug 16 21:14:06 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (BASERUBY): need AC_SUBST.  [ruby-dev:31438]
-
-Thu Aug 16 19:18:26 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/sentence.rb: Sentence class implemented
-	  based on sentgen.rb
-
-	* test/ruby/sentgen.rb: removed.
-
-	* test/ruby/test_assignment.rb: use sentence.rb.
-
-	* test/ruby/test_yield.rb: block parameter passing emulator
-	  implemented.
-
-Thu Aug 16 16:48:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BASERUBY): check if base ruby is runnable first.
-	  [ruby-core:11900]
-
-Thu Aug 16 16:46:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (aix): enable shared by default.
-
-	* configure.in (aix): for 64bit-mode AIX.  [ruby-dev:31401]
-	  + use CC for LDSHARED if non-gcc,
-	  + moved -G option from *LDFLAGS to LDSHARED,
-	  + set -brtl only in XLDFLAGS.
-
-Thu Aug 16 13:06:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (big_lshift): make shift offset long type.
-	  (big_rshift): ditto.
-	  (rb_big_lshift): ditto.
-	  (big_rshift): ditto.
-	  [ruby-dev:31434]
-
-Thu Aug 16 06:29:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_readpartial): argf_forward needs argc and argv.
-
-Thu Aug 16 02:47:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_fiber_m_yield): added.  use this function
-	  for Fiber#yield instead of rb_fiber_yield.
-
-Thu Aug 16 00:36:52 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/tmpdir.rb (Dir.mktmpdir): new method.  [ruby-dev:31416]
-
-Wed Aug 15 18:57:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (os_live_obj): fix to skip T_VALUES.
-
-	* sample/test.rb: add an ObjectSpace test.
-
-Wed Aug 15 16:49:04 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* inits.c (rb_call_inits): change initializing order.
-	  [ruby-dev:31420]
-
-Wed Aug 15 16:44:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (ARGF_FORWARD): wrongly compares with current_file with
-	  rb_stdout.  should be rb_stdin.  [ruby-cvs:20177]
-
-Wed Aug 15 14:59:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_initialize, argf_each_line, argf_each_byte): suppress
-	  warnings.
-
-Wed Aug 15 14:22:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: remove "//" type comment.
-
-Wed Aug 15 13:42:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: fix rules around f_margs.  "make test" passes all tests.
-
-	* bootstraptest/test_block.rb: add some tests for above.
-
-Wed Aug 15 13:50:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_delete_key): delete the entry without calling block.
-
-	* hash.c (rb_hash_shift): should consider iter_lev too.
-
-	* hash.c (delete_if_i): use rb_hash_delete_key() so that the block
-	  isn't called twice.  [ruby-core:11556]
-
-Wed Aug 15 13:39:25 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* process.c (proc_geteuid): fix strange conversion.  [ruby-dev:31417]
-
-Wed Aug 15 01:05:55 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_check): don't call newtest.
-	  (assert_equal): call newtest.
-	  (assert_match): ditto.
-
-Tue Aug 14 21:43:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_check): new method.
-	  (assert_match): new method.
-	  (assert_equal): use assert_check.
-	  (pretty): give failure description as an argument.
-
-	* bootstraptest/test_exception.rb: use assert_match to describe the
-	  test for [ruby-dev:31407].  [ruby-dev:31412]
-
-Tue Aug 14 19:53:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (Init_Proc), eval.c (Init_eval), eval_intern.h: move
-	  init place of exception_error.
-
-	* inits.c: ditto.
-
-	* eval.c (Init_eval): set exception_error#throwed_state as TAG_FATAL.
-	  [ruby-dev:31407]
-
-	* bootstraptest/test_exception.rb: add a test for above.
-
-Tue Aug 14 19:51:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: change test order (test -> btest).
-
-Tue Aug 14 00:04:27 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: 0.1.8 -> 0.1.9.
-
-	* test/rss/test_version.rb: followed the above change.
-
-	* lib/rss/parser.rb: fixed a bug that handles unintended elements.
-	  Thanks to Takuo Yonezawa. [ruby-list:43841]
-
-Mon Aug 13 17:23:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_clear_trace_func, rb_thread_stop_timer_thread):
-	  declarations for forward references.
-
-	* eval.c (rb_longjmp, eval): use local variable.
-
-	* eval.c (rb_longjmp): string object not to be optimized.
-
-Mon Aug 13 13:21:58 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: make ftp passive mode to avoid NAT problem.
-	  [ruby-dev:31377]
-
-Mon Aug 13 09:18:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_getc): should returns
-	  one-character string.
-
-	* ext/stringio/stringio.c: remove unnecessary prototypes.
-
-	* ext/stringio/stringio.c (strio_getbyte): new method.
-
-	* ext/stringio/stringio.c (strio_readbyte): new method.
-
-	* ext/stringio/stringio.c (strio_ungetc): should take a string as
-	  an input.
-
-Mon Aug 13 08:19:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_close): always close via method.
-
-	* io.c (Init_IO): remove obsolete Kernel#getc.
-
-Mon Aug 13 05:03:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_raise): check if target thread is
-	  thrown by another thread or not.  [ruby-dev:31371]
-
-	* bootstraptest/test_thread.rb: add a test for above.
-
-Mon Aug 13 04:35:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_peephole_optimize): fix peephole optimization
-	  bug. [ruby-dev:31360]
-
-	* bootstraptest/test_syntax.rb: add a test for above.
-
-Mon Aug 13 04:02:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c (debug_print_pre): fix to show control frame count.
-
-	* insns.def (opt_call_c_function): fix operand type.
-
-	* lib/vm/instruction.rb: ditto.
-
-	* insnhelper.ci (vm_push_frame, vm_pop_frame): fix to show
-	  control stack status on if VMDEBUG == 2.
-
-	* vm.h: add a comment about VMDEBUG.
-
-	* iseq.c (find_prev_line_no): fix to skip bug report if
-	  line is not found.
-
-	* lib/vm/instruction.rb: fix to use build_string() on
-	  source code generators.
-
-Mon Aug 13 03:57:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* template/yasmdata.rb.tmpl: fix type and name.
-
-Sat Aug 11 23:27:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_each_line): should use #each_line, not #each.
-
-	* io.c (argf_each_line): simplified.
-
-	* io.c (argf_getline): should handle non T_FILE object in ARGV.
-
-	* io.c (argf_each_byte): each_byte should yield bytes not
-	  one-character strings.  [ruby-dev:31374]
-
-Sat Aug 11 07:24:55 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: reverted some wrongly erased "o" options
-	  (pointed out by nobu).
-
-Sat Aug 11 00:01:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): not re-raise to main thread if it is
-	  joining the current thread.
-
-Fri Aug 10 23:54:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_create_core): inherit the priority of creating
-	  thread.  submitted at [ruby-core:11873] by David Flanagan <david AT
-	  davidflanagan.com>.  [ruby-core:11876]
-
-Fri Aug 10 05:12:19 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): let abort_on_exception work.
-	  [ruby-core:11873]
-
-Fri Aug 10 04:47:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (internal_id_gen): internal ID must be bigger than
-	  tLAST_TOKEN.
-
-Thu Aug  9 16:04:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): check if rhs has value before assignment instead
-	  inside node_assign_gen().  [ruby-dev:31293]
-
-	* parse.y (call_bin_op_gen, call_uni_op_gen): split call_op_gen.
-
-Thu Aug  9 14:01:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_marg_list): renamed from f_marg_head.
-
-	* parse.y (f_margs): allow multiple mandatory arguments after a splat.
-	  [ruby-dev:31153]
-
-Thu Aug  9 02:02:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_cycle): typo fixed.  a patch from Kazuhiro
-	  NISHIYAMA <zn AT mbf.nifty.com>.  [ruby-dev:31362]
-
-Wed Aug  8 19:17:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dl/cptr.c (rb_dlptr_s_to_ptr): no longer check
-	  HAVE_RB_IO_STDIO_FILE.
-
-Wed Aug  8 15:52:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_next_p): should check correctly even when
-	  e.next has not been called before.
-
-	* enumerator.c (enumerator_next): raise StopIteration (name taken
-	  from Python) instead of IndexError.
-
-	* enum.c (enum_zip): catch StopIteration exception.
-
-	* enumerator.c (enumerator_with_index): return Enumerator if no
-	  block is given.
-
-	* test/ruby/test_iterator.rb (TestIterator::test_enumerator): add
-	  test for enumerators.
-
-Wed Aug  8 11:48:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): should not use RTEST for non-VALUE.
-
-Wed Aug  8 11:25:25 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): should preserve sign mark.
-
-Wed Aug  8 11:02:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (btest-miniruby, test-sample): split the test target
-	  so that -k option works.
-
-Tue Aug  7 14:58:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/pty.c (establishShell): handshaking before close slave
-	  device.  [ruby-talk:263410]
-
-	* ext/pty/pty.c (MasterDevice, SlaveDevice, deviceNo): constified.
-
-	* ext/pty/pty.c (SlaveName): removed static buffer.
-
-	* ext/pty/expect_sample.rb: support for autologin.
-
-Tue Aug  7 13:58:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (ruby_special_consts): added RUBY_SPECIAL_SHIFT.
-
-	* .gdbinit: some improvements.
-
-Tue Aug  7 13:28:32 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (node_name.inc): use $? instead of $< for nmake.
-	  [ruby-dev:31356]
-
-Tue Aug  7 12:45:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_cv_func_isinf): set yes also on OpenSolaris.
-	  [ruby-Bugs-12859]
-
-Tue Aug  7 12:31:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): fix for win32 platforms.
-
-Tue Aug  7 02:58:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): make Bignum#to_s even faster.  a patch
-	  from Kenta Murata <muraken AT gmail.com>.  [ruby-dev:31354]
-
-Tue Aug  7 01:42:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_zip): zip no longer converts arguments into
-	  arrays, uses enumerators.
-
-Tue Aug  7 01:27:47 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* cont.c (rb_fiber_yield): change argument ordering.  export.
-
-	* cont.c (rb_fiber_current): export
-
-	* include/ruby/intern.h: export several functions from cont.c.
-
-	* enumerator.c (enumerator_next): new method to implement external
-	  iterator (generator) using fiber.
-
-	* enumerator.c (enumerator_next_p): new method to check whether
-	  any element is left in the generator sequence.
-
-	* enumerator.c (enumerator_rewind): a new method to rewind the
-	  generator sequence.
-
-Tue Aug  7 01:15:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_cycle): new method to cycle enumerable forever.
-
-Tue Aug  7 00:05:38 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* irb/ruby-lex.rb: support for '\c'. [ruby-talk:263508]
-
-Mon Aug  6 20:29:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci, insns.def: move some statements to functions.
-
-	* vm.c, vm.h, vm_evalbody.ci: fix include/typedef places.
-
-Mon Aug  6 18:41:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/vm/instruction.rb (make_header_analysys): fix last commit.
-
-Mon Aug  6 18:33:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/vm/instruction.rb (make_header_analysys): add to separate
-	  header addition process.
-
-Mon Aug  6 17:36:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rexml/encodings/{ISO-8859-15,CP-1252}.rb: fixed invalid syntax.
-
-Mon Aug  6 16:57:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* sample/test.rb: fix to output file name if it contains
-	  invalid syntax.
-
-Mon Aug  6 16:41:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y (value_expr_gen): fix to cause "void value expression"
-	  when jump expression such as "next" are shown on value_expr().
-	  [ruby-dev:31119]
-
-	* bootstraptest/test_syntax.rb: fix to above change.
-
-Mon Aug  6 14:36:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: fix a f_marg rule. [ruby-dev:31160]
-
-Mon Aug  6 14:29:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb (assert_equal): add additional
-	  message parameter.
-
-Mon Aug  6 13:34:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (INSNS): not chdir to srcdir.
-
-	* common.mk (node_name.inc): auto-generate node name list.
-
-	* iseq.c (ruby_node_name): ditto.
-
-	* iseq.c (iseq_s_compile_option_get, Init_ISeq): added a new
-	  method VM::InstructionSequence::compile_option.
-
-	* lib/vm/instruction.rb (RubyVM::SourceCodeGenerator): --destdir
-	  option.
-
-	* tool/node_name.rb: to auto-generate node name list.
-
-Sun Aug  5 11:51:39 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss, sample/rss, test/rss:
-	- 0.1.7 -> 0.1.8.
-	- supported <itunes:XXX>.
-	- reverted backward incompatibility API changes introduced 0.1.7.
-
-Sun Aug  5 04:56:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open_v, pipe_open_s): separate array and string
-	  cases.  [ruby-dev:31344]
-
-Fri Aug  3 11:05:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): save all CONFIG values.
-
-	* ext/extmk.rb (extmake): remove mkmf.log at clean, and extconf.h at
-	  distclean, respectively.
-
-	* ext/extmk.rb: remove rdoc at clean, and installed list file at
-	  distclean, respectively.
-
-Fri Aug  3 07:09:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: more verbose message.  [ruby-Bugs-12766]
-
-	* lib/mkmf.rb (have_type): suppress a warning with -Wall.
-
-	* lib/mkmf.rb (find_type): new method.
-
-Fri Aug  3 00:00:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big2str_table): base cannot be 0 or 1.
-
-Thu Aug  2 23:42:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_compile_gen): set error if failed to compile regexp
-	  literal.  [ruby-dev:31336]
-
-	* re.c (option_to_str, arg_kcode, opt_kcode): options conversion
-	  between int and string.
-
-	* re.c (rb_reg_compile): should not use regexp which could not get
-	  initialized.  [ruby-dev:31333]
-	  return error message to let the parser know it.
-
-	* re.c (rb_reg_compile): append regexp options to error message.
-	  [ruby-dev:31334]
-
-Thu Aug  2 22:05:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): faster Bignum#to_s using Karatsuba
-	  algorithm.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>
-	  in [ruby-dev:31312], slightly modified by Kenta Murata
-	  <muraken AT gmail.com> in [ruby-dev:31339].
-
-Thu Aug  2 13:46:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): should not check positional number as
-	  width.  [ruby-core:11838]
-
-Wed Aug  1 12:40:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* generic.rb (URI::Generic::merge_path): behave as RFC 3986.
-	  [ruby-talk:252052]
-
-Tue Jul 31 23:38:09 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_parse): now interprets slashed numerical
-	  dates as a big endian (except dd/mm/yyyy). [experimental]
-
-Mon Jul 30 11:16:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_aref): check for Bignum index range.
-	  [ruby-dev:31271]
-
-Sat Jul 28 09:35:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/digest/lib/digest.rb (Digest::self.const_missing): avoid
-	  infinite recursive const_missing call.  [ruby-talk:262193]
-
-Thu Jul 26 20:40:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_eqq): call_super() in === does not work well
-	  since Enumerable#=== has different behavior.  [ruby-dev:31296]
-
-Thu Jul 26 13:57:45 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (load_1, dln_find_1): constified.
-
-	* dln.c (conv_to_posix_path): removed.
-
-	* ruby.c (usage): constified.
-
-	* ruby.c (rubylib_mangled_path, rubylib_mangled_path2): return
-	  VALUE instead of a pointer to static buffer.
-
-	* ruby.c (push_include_cygwin): fixed buffer overflow.
-	  [ruby-dev:31297]
-
-	* ruby.c (ruby_init_loadpath): not convert built-in paths.
-
-Tue Jul 24 10:37:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_f_p): return nil if no argument.  [ruby-dev:31285]
-
-Tue Jul 24 01:05:07 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regint.h (USE_MATCH_RANGE_IS_COMPLETE_RANGE): undef to achieve old
-	  rindex behavior.  [ruby-dev:31265]
-
-Mon Jul 23 18:37:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h: upgrade to Oniguruma 5.9.0.  fixes
-	  some memory violation.  [ruby-dev:31070]
-
-Sun Jul 22 20:09:49 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (Date._parse): now accepts some new
-	  hints. [experimental]
-
-	* lib/parsedate.rb: followed the changes on
-	  lib/date/format.rb. [experimental]
-
-Sun Jul 22 16:06:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (is_ruby_native_thread): made an int function as
-	  well as version 1.8.
-
-	* include/ruby/ruby.h (is_ruby_native_thread): moved prototype
-	  from intern.h as well as version 1.8.
-
-Sun Jul 22 14:33:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_rename): deleted code to get rid of a bug of
-	  old Cygwin.
-
-	* file.c (rb_file_truncate): added prototype of GetLastError()
-	  on cygwin.  [ruby-dev:31239]
-
-	* include/ruby/intern.h (is_ruby_native_thread): prototype.
-
-	* missing/strftime.c (strftime): fix printf format and actual
-	  arguments.
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): ditto.
-
-	* ext/tk/tcltklib.c (ip_finalize): ditto.
-
-	* ext/win32ole/win32ole.c (lcid_installed): ditto.
-
-	* ext/socket/getnameinfo.c: include stdio.h always.
-
-Sat Jul 21 21:39:12 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb (Date._parse): now can take some
-	  hints (its aim must be mainly determination of endianness of
-	  date). [experimental]
-
-	* lib/date.rb, lib/date/format.rb (Date._parse): now completes
-	  truncated year as default action. [experimental]
-
-	* lib/date.rb, lib/date/format.rb: added ::iso8601, ::rfc3339,
-	  ::xmlschema, ::rfc2822, ::httpdate, ::jisx0301, #xmlschema,
-	  #httpdate. [experimental]
-
-Sat Jul 21 17:48:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: inverted rules order.
-
-	* thread_win32.ci (w32_create_thread): bcc does not have
-	  _beginthreadex().
-
-	* lib/mkmf.rb (create_makefile): make OBJS depend on RUBY_EXTCONF_H
-	  only if extconf.h is created.
-
-	* bcc32/Makefile.sub: headers have moved.
-
-	* bcc32/{Makefile.sub,configure.bat,setup.mak: configure_args
-	  support.
-
-	* bcc32/setup.mak: check runtime version.
-
-	* win32/win32.c (rb_w32_open_osfhandle): prototype has changed
-	  in bcc 5.82.
-
-	* {win32,wince,bcc32}/setup.mak (-version-): no RUBY_EXTERN magic.
-
-	* win32/resource.rb: include patchlevel number.
-
-Sat Jul 21 12:06:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (init_mkmf): should remove mkmf.log too.
-
-Sat Jul 21 01:45:03 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (Date._parse): completes calendar week based year.
-
-	* lib/date/format.rb (Date._parse): detects year of ordinal date in
-	  extended format.
-
-Fri Jul 20 16:30:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_set_sequence): raise SyntaxError instead of rb_bug
-	  since this function can be called from VM::InstructionSequence.load.
-
-	* compile.c (insn_set_sc_state, iseq_set_sequence_stackcaching): ditto.
-
-Fri Jul 20 16:11:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c, compile.h (DECL_ANCHOR, INIT_ANCHOR): split not to
-	  initialize aggregations with dynamic values.  [ruby-talk:259306]
-
-	* eval.c (rb_protect): not to initialize aggregations with dynamic
-	  values.  [ruby-talk:259306]
-
-	* gc.c (mark_current_machine_context): ditto.
-
-	* thread.c (thgroup_list, call_trace_func): ditto.
-
-	* vm.c (vm_init_redefined_flag): ditto.
-
-Fri Jul 20 15:22:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_config.c (ossl_config_set_section): do not
-	  initialize aggregations with dynamic values.  [ruby-talk:259306]
-
-Fri Jul 20 10:39:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt, mlhs_node, lhs, arg, var_ref): return dummy
-	  NODE_BEGIN after errors.  [ruby-dev:31100], [ruby-dev:31118]
-
-	* parse.y (remove_begin): keep empty NODE_BEGIN, instead of null.
-	  [ruby-dev:31252], [ruby-dev:31263]
-
-Fri Jul 20 09:50:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/runner.rb (get_result_string): check $?.coredump?
-	  first.
-
-	* bootstraptest/runner.rb (cleanup_coredump, check_coredump): see
-	  stackdump file too.
-
-Thu Jul 19 20:39:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (value_expr_gen): warn for empty expression ().
-	  [ruby-dev:31252]
-
-Thu Jul 19 19:24:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.ci (get_backtrace): check the result more.
-	  [ruby-dev:31261] [ruby-bugs-12398]
-
-Thu Jul 19 14:38:45 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_lshift, rb_big_rshift): separated functions
-	  to get rid of infinite recursion.  fixed calculation in edge
-	  cases.  [ruby-dev:31244]
-
-	* numeric.c (rb_fix_lshift, rb_fix_rshift): ditto.
-
-Wed Jul 18 16:57:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_pow): refine overflow check.  [ruby-dev:31242]
-
-Wed Jul 18 09:19:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_parser_append_print, rb_parser_while_loop): moved check
-	  for node to the head.
-
-	* ruby.c (proc_options): do nothing for -p/-n options if tree is null.
-	  submitted by Yusuke ENDOH <mame AT tsg.ne.jp> at [ruby-dev:31243].
-
-Wed Jul 18 08:47:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_succ): Time#succ should return a time object in the
-	  same timezone mode to the original.  [ruby-talk:260256]
-
-Mon Jul 16 23:07:51 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/base64.rb (Base64::b64encode): should not specify /o option
-	  for regular expression.  [ruby-dev:31221]
-
-Mon Jul 16 22:57:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): make %u behave like %d for negative
-	  values, since decimal format does not work with preceding dots.
-	  [ruby-core:11575]
-
-Mon Jul 16 18:29:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_rindex_m): accept string-like object convertible
-	  with #to_str method, as well as rb_str_index_m.  [ruby-core:11692]
-
-Mon Jul 16 07:17:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (getspecial): lfp_svar_get() requires int for special
-	  global variables.
-
-Mon Jul 16 05:45:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): more checks for format argument.
-	  [ruby-core:11569], [ruby-core:11570], [ruby-core:11571],
-	  [ruby-core:11573]
-
-Mon Jul 16 00:26:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_pow): removed invariant variable.  [ruby-dev:31236]
-
-Sun Jul 15 22:24:37 2007  pegacorn  <subscriber.jp AT gmail.com>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): adjust format.  [ruby-dev:31222]
-
-	* ext/digest/digest.c (rb_digest_instance_update,
-	  rb_digest_instance_finish, rb_digest_instance_reset,
-	  rb_digest_instance_block_length): %s in rb_raise() expects char*.
-	  [ruby-dev:31222]
-
-	* ext/openssl/ossl.h: include ossl_pkcs5.h.  [ruby-dev:31231]
-
-	* ext/openssl/ossl_pkcs5.h: new file for PKCS5.  [ruby-dev:31231]
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_to_s): use ossl_raise()
-	  instead of rb_raise().  [ruby-dev:31222]
-
-	* ext/sdbm/_sdbm.c: DOSISH platforms need io.h.  [ruby-dev:31232]
-
-	* ext/syck/syck.h: include stdlib.h for malloc() and free().
-	  [ruby-dev:31232]
-
-	* ext/syck/syck.h (syck_parser_set_input_type): prototype added.
-	  [ruby-dev:31231]
-
-	* win32/win32.c: include mbstring.h for _mbspbrk().  [ruby-dev:31232]
-
-	* include/ruby/win32.h (rb_w32_getcwd): prototype added.
-	  [ruby-dev:31232]
-
-Sun Jul 15 21:07:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (bigtrunc): do not empty Bignum.  [ruby-dev:31229]
-
-Sun Jul 15 19:05:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): check leading non-digits.
-	  [ruby-core:11691]
-
-Sun Jul 15 04:42:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (get2comp): do nothing for empty Bignum.  [ruby-dev:31225]
-
-Sat Jul 14 22:49:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_pow): integer power calculation: 0**n => 0,
-	  1**n => 1, -1**n => 1 (n: even) / -1 (n: odd).
-
-	* test/ruby/test_fixnum.rb (TestFixnum::test_pow): update test
-	  suite.  pow(-3, 2^64) gives NaN when pow(3, 2^64) gives Inf.
-
-Sat Jul 14 18:46:35 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: add --with-valgrind.
-
-	* gc.h (SET_MACHINE_STACK_END): new macro to replace
-	  rb_gc_set_stack_end.  it find out accurate stack boundary by
-	  asm using gcc on x86.
-
-	* thread.c (rb_gc_set_stack_end): don't define if asm-version
-	  SET_MACHINE_STACK_END is available.
-
-	* gc.c (mark_current_machine_context): extracted from garbage_collect.
-	  it use SET_MACHINE_STACK_END to not scan out of stack area.
-	  it notify conservative GC information to valgrind if
-	  --with-valgrind.
-
-Sat Jul 14 14:04:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (sort_by_cmp): check if reentered.  [ruby-dev:24291]
-
-Sat Jul 14 11:08:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/json/ext/generator/generator.c (check_max_nesting): wrong
-	  format specifier.  a patch from pegacorn <subscriber.jp AT gmail.com>.
-	  [ruby-dev:31217]
-
-Sat Jul 14 02:27:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_pow): overflow detection using FIT_SQRT_LONG().
-	  [ruby-dev:31215]
-
-Sat Jul 14 02:05:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (opt_div): LONG2FIX() may not work for corner cases,
-	  use LONG2NUM() instead.  [ruby-dev:31210]
-
-Sat Jul 14 00:34:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_round): should not return false, but self.
-	  [ruby-dev:31212]
-
-Fri Jul 13 18:31:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/intern.h: remove unused function declarations.
-
-	* include/ruby/ruby.h: ditto.
-
-Fri Jul 13 17:32:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm.c (vm_free): clear free'ed living_threads field.
-	  [ruby-dev:31163]
-
-	* insns.def (opt_succ): use cast to shut a warning up.
-
-Fri Jul 13 16:10:00 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (URI::Generic#find_proxy): use ENV.to_hash to access
-	  http_proxy environment variable to avoid case insensitive
-	  environment search.
-
-Fri Jul 13 15:02:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): enclose command line except for
-	  command.com which can not handle quotes.  [ruby-talk:258939]
-
-Fri Jul 13 11:33:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_max, range_min): return nil for empty set as well as
-	  1.8 and Enumerable.  [ruby-dev:31198]
-
-Fri Jul 13 11:28:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (bvar): semicolon was lost for ripper description.
-	  [ruby-dev:31140]
-
-Fri Jul 13 11:25:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (program, stmt, primary): reduced duplicated code.
-
-	* parse.y (dsym): convert also literals containing NUL to
-	  symbol.
-
-	* parse.y (debug_lines): use rb_hash_lookup() to get rid of
-	  call of Hash#default.
-
-	* parse.y (ripper_warningS): unused in ripper right now.
-
-Fri Jul 13 10:33:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_flatten_bang): check argument if valid
-	  integer.  [ruby-dev:31197]
-
-Fri Jul 13 10:10:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (link_command, cc_command, cpp_command): do not expand
-	  ::CONFIG which is an alias of MAKEFILE_CONFIG.
-
-Thu Jul 12 21:38:02 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insns.def (opt_succ): use LONG_MAX as maximum Fixnum VALUE.
-	  [ruby-dev:31199]
-
-Thu Jul 12 18:42:18 2007  Tanaka Akira  <akr@fsij.org>
-
-	* range.c (range_max): use FIX2LONG instead of FIX2INT to avoid
-	  RangeError by ((-0x80000001)...(-0x80000001)).max on LP64.
-
-	* insns.def (opt_plus): use FIX2LONG instead of FIX2INT to avoid
-	  RangeError by 0x3fffffffffffffff+1 on LP64.
-
-	* insns.def (opt_succ): don't use 0x80000000 which assumes 32bit VALUE.
-	  use FIX2LONG instead of FIX2INT.
-	  [ruby-dev:31190]
-
-Thu Jul 12 17:03:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (rb_struct_init_copy): disallow changing the size.
-	  [ruby-dev:31168]
-
-Thu Jul 12 12:58:21 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* blockinlining.c: remove "yarv" prefix.
-
-	* array.c, numeric.c: ditto.
-
-	* insnhelper.ci, insns.def, vm_evalbody.ci: ditto.
-
-	* yarvcore.c: removed.
-
-	* yarvcore.h: renamed to core.h.
-
-	* cont.c, debug.c, error.c, process.c, signal.c : ditto.
-
-	* ext/probeprofiler/probeprofiler.c: ditto.
-
-	* id.c, id.h: added.
-
-	* inits.c: ditto.
-
-	* compile.c: rename internal functions.
-
-	* compile.h: fix debug flag.
-
-	* eval.c, object.c, vm.c: remove ruby_top_self.
-	  use rb_vm_top_self() instead.
-
-	* eval_intern.h, eval_load: ditto.
-
-	* gc.c: rename yarv_machine_stack_mark() to
-	  rb_gc_mark_machine_stack().
-
-	* insnhelper.h: remove unused macros.
-
-	* iseq.c: add iseq_compile() to create iseq object
-	  from source string.
-
-	* proc.c: rename a internal function.
-
-	* template/insns.inc.tmpl: remove YARV prefix.
-
-	* thread.c: use rb_iseq_eval() and rb_str_new2().
-
-	* vm.c (rb_iseq_eval): added.
-
-	* vm.c: move some functions from yarvcore.c.
-
-	* vm_dump.c: fix to remove compiler warning.
-
-Thu Jul 12 12:24:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (opt_succ): fixed typo.  [ruby-dev:31189]
-
-Thu Jul 12 10:30:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): moved prototye from thread_*.ci.
-
-	* thread_pthread.ci (thread_start_func_2): not use a directive
-	  inside a macro argument.  [ruby-talk:258763]
-
-	* thread.c (thread_join): pthread_t may not be pointer.
-
-	* thread_pthread.ci (ubf_select_each): ditto.
-
-Thu Jul 12 05:32:28 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h (FIX2ULONG): drop sign bit for LLP64 platform.
-
-Tue Jul 10 19:34:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* hash.c (rb_hash_lookup): added.  this function is similar to
-	  rb_hash_aref(), but doesn't call Hash#default when no entry
-	  exists.
-
-	* include/ruby/intern.h: ditto.
-
-	* insnhelper.ci (lfp_svar_get): use rb_hash_lookup().
-
-Tue Jul 10 19:16:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, insnhelper.ci, vm.c: change cref index (-1 -> 2).
-
-Tue Jul 10 18:49:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (exec_under): add proper casts.
-
-Tue Jul 10 16:58:16 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, insnhelper.ci: fix svar interface.
-
-	* compile.c (iseq_compile_each), yarvcore.h: fix to use new
-	  svar interface for flip flop.
-
-	* eval.c: ditto.
-
-	* insns.def: ditto.
-
-	* include/ruby/intern.h: remove "rb_svar()" declaration.
-
-Tue Jul 10 16:52:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (rb_iseq_compile): formatted if/else to switch statement.
-
-Tue Jul 10 15:57:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/test_flip.rb: new test for flip-flop operator.
-
-Tue Jul 10 14:50:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bcc32/{Makefile.sub,setup.mak}: remove surplus slash from srcdir.
-
-Mon Jul  9 02:17:36 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* cont.c (cont_restore_1): workaround for x64-mswin64's SEH.
-
-Sun Jul  8 02:08:53 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/json.rb, lib/json/, ext/json/: import JSON 1.1.1
-
-Sat Jul  7 21:59:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb (PP::PPMethods#pp_hash): sort condition changed:
-	  all keys have a same class which is kind of Comparable.
-
-Sat Jul  7 17:12:37 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: use rb_bug() instead of rb_compile_error().
-
-Sat Jul  7 16:12:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: fix node construction (around f_margs).
-	  [ruby-dev:31143]
-
-	* bootstraptest/test_block.rb: add a test for above.
-
-	* insnhelper.ci: fix indent.
-
-Sat Jul  7 15:36:50 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb (PP::PPMethods#pp_hash): sort if
-	  all keys are strings, symbols or integers.
-
-Sat Jul  7 15:30:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_yield_setup_args), vm.c, insns.def:
-	  fix to pass nil as block parameter to yielded block.
-	  [ruby-dev:31147]
-
-	* bootstraptest/test_block.rb: add a test for above.
-
-Fri Jul  6 19:55:10 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb.rb: typo. Thanks, Giles Bowkett.
-
-	* lib/irb/completion.rb: support Ruby1.9 changing return value
-	  String to Symbol for Object#methods, etc. [ruby-dev:31148].
-
-Fri Jul  6 18:20:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: fix load path.
-
-	* common.mk: fix "test" rule to run with "btest".
-
-	* rubytest.rb, sample/test.rb: fix to show tests progress.
-
-Fri Jul  6 15:37:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_iterator.rb: fix test to 1.9 spec.
-
-Fri Jul  6 15:21:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_interrupt): suppress a gcc's officious warning.
-
-Fri Jul  6 14:57:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (keyword_to_name): constified.
-
-	* ext/ripper/eventids2.c (token_to_eventid): ditto.
-
-Fri Jul  6 14:50:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/runner.rb: added --quiet option.
-
-Fri Jul  6 14:35:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_marg): wrap f_norm_arg assignment node with NODE_LIST.
-	  [ruby-dev:31141]
-
-Fri Jul  6 12:15:01 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/sentgen.rb: new file.
-
-	* test/ruby/test_assignment.rb: tests implemented using assignment
-	  generator and emulator.
-
-Fri Jul  6 03:06:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: remove unused code.
-
-	* compile.c (compile_massign): fix to invoke to_splat on
-	  splat rhs (example: *a = *nil). [ruby-dev:31136]
-
-	* bootstraptest/test_massign.rb: add tests for above.
-
-	* compile.c (iseq_compile_each): disable excess optimization.
-	  [ruby-dev:31126]
-
-Fri Jul  6 02:08:25 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: fix to invoke nil.to_splat on NODE_ARGSCAT.
-	  [ruby-dev:31138].
-
-	* bootstraptest/test_literal.rb: add tests for above.
-
-Thu Jul  5 19:45:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h: rename rb_control_frame_t#magic to flag.
-
-	* vm.h: add VM_FRAME_TYPE() and VM_FRAME_FLAG().
-
-	* cont.c, insnhelper.ci, insns.def, vm.c, vm_dump.c,
-	  vm_evalbody.ci, yarvcore.c: apply above changes.
-
-Thu Jul  5 19:16:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_basicinstructions.rb: remove an assertion using
-	  unsupported hash literal (such as {1, 2}).
-
-	* test/ruby/test_hash.rb: ditto.
-
-Thu Jul  5 19:12:22 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c: Qfalse is VALUE, not pointer.
-
-Thu Jul  5 18:42:01 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): add break catch point.
-
-	* insns.def (throw): support correct "break" and "return".
-	  this commit achieve that "make test" passes all tests.
-
-	* vm.c: ditto.
-
-Thu Jul  5 18:44:12 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (mlhs_basic): use mlhs_post after tSTAR.
-	  [ruby-dev:31109]
-
-Thu Jul  5 18:27:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/{intern,ruby}.h, compile.[ch], error.c, eval.c,
-	  eval_load.c, gc.c, iseq.c, main.c, parse.y, re.c, ruby.c,
-	  yarvcore.[ch] (ruby_eval_tree, ruby_sourcefile, ruby_sourceline,
-	  ruby_nerrs): purge global variables.
-
-	* ruby.c (proc_options): moved do_print and do_loop options
-	  handling from ruby_process_options().
-
-Thu Jul  5 16:37:34 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (int_pow): fix previous nubu's commit.
-
-	* test/ruby/test_fixnum.rb: new test.
-
-Thu Jul  5 15:56:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (int_pow): even number multiplication never be negative.
-
-Thu Jul  5 10:42:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/{node,ruby}.h, ruby.c: added enum constants for gdb
-	  support.  [ruby-dev:31066]
-
-	* .gdbinit: some improvements.
-
-Thu Jul  5 10:13:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (global_symbols.last_id): reduce unused ID numbers.
-
-	* include/ruby/st.h, st.c (st_init_table, st_init_table_with_size):
-	  constified.
-
-Wed Jul  4 23:36:27 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/webrick/httpauth/authenticator.rb
-	  (WEBrick::HTTPAuth::Authenticator#check_scheme): auth-scheme must be
-	  treated as a case-insensitive token according to RFC 2617 section 1.2.
-
-Wed Jul  4 18:30:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (mlhs_inner): new rule.  [ruby-dev:31132]
-
-Wed Jul  4 05:11:57 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (set_relation): added.
-
-Wed Jul  4 04:58:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (caller_setup_args): fix to show correct class
-	  on an error message (ex: m(&1)). [ruby-dev:31101]
-
-Wed Jul  4 04:30:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (compile_array, iseq_compile_each): fix about array
-	  generation in void context. [ruby-dev:31102]
-
-	* bootstraptest/test_literal.rb: add a test for above.
-
-Wed Jul  4 04:07:00 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (compile_array): ignore NODE_ZARRAY.
-	  [ruby-dev:31110]
-
-	* bootstraptest/test_method.rb: add a test for above.
-
-Wed Jul  4 04:04:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.h: fix debug print level.
-
-Wed Jul  4 03:52:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): support v[&b]= type method call.
-	  [ruby-dev:31094]
-
-	* bootstraptest/test_method.rb: add a test for above.
-
-Wed Jul  4 03:43:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (compile_massign): fix massign compilation
-	  (example: a, *v, (*x) = ...).  [ruby-dev:31107]
-
-	* bootstraptest/test_massign.rb: add tests for above.
-
-Tue Jul  3 23:12:29 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/onigiruma.h (ONIG_EXTERN): use RUBY_EXTERN if defined.
-
-	* regenc.h: include ruby/defines.h.
-
-	* regint.h: x64-mswin64 support.
-
-Tue Jul  3 13:47:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_save_machine_stack): clear saved_thread.machine_stack*.
-
-Mon Jul  2 21:45:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: rename iseq_translate_direct_threaded_code()
-	  to iseq_translate_threaded_code().
-
-	* eval_intern.h, yarvcore.h: mv EXEC_EVENT_HOOK() and
-	  exec_event_hooks() to yarvcore.h.
-
-	* insnhelper.ci, vm.c: mv yarv_finish_insn_seq to vm.c.
-
-	* insns.def (opt_call_c_function): fix to use RESTORE_REGS().
-
-	* iseq.c (rb_iseq_build_for_ruby2cext): fix to allocate iseq.
-
-Mon Jul  2 11:59:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (defineclass): suppress a warning.
-
-	* insns.def (opt_call_c_function): should raise the thrown exception
-	  instead of returning it.
-
-Mon Jul  2 08:53:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h, yarvcore.h: move declaration of sysstack_error
-	  to yarvcore.h.
-
-	* iseq.c: fix symbol name (:toplevel -> :top).
-
-	* lib/vm/instruction.rb, template/vm.inc.tmpl: replaceable
-	  current file name.
-
-Mon Jul  2 05:29:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, iseq.c: fix iseq some of load/store process.
-
-Mon Jul  2 03:09:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h, compile.c, insnhelper.ci, iseq.c, vm.c:
-	  rename structure names and field names.
-
-	* insnhelper.h, insns.def: add GET_CONST_INLINE_CACHE().
-
-	* iseq.c: add rb_iseq_build_for_ruby2cext().
-
-	* yarvcore.h, vm.h: move declaration of rb_insn_func_t
-	  to yarvcore.h.
-
-Sun Jul  1 03:25:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.h, vm.h: some refactoring.
-	  remove useless comments, etc.
-
-Sun Jul  1 03:02:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h: some refactoring on rb_iseq_t.
-	  rename some variable names, add comments, etc.
-
-	* compile.c, iseq.c, proc.c, vm.c: ditto.
-
-Sun Jul  1 02:57:57 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.h: rename insn_func_type to rb_insn_func_type.
-
-	* vm_evalbody.ci: ditto.
-
-	* insns.def: add opt_call_native_compiled instruction
-	  instead of opt_call_native_compiled.
-
-Sat Jun 30 00:17:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): return non-valid token for an invalid
-	  instance/class variable name.  a patch from Yusuke ENDOH
-	  <mame AT tsg.ne.jp>.  [ruby-dev:31095]
-
-Fri Jun 29 23:38:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmts): fix for ripper.
-
-Fri Jun 29 21:55:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: fix to show line number of blank block.
-	  [ruby-dev:31093]
-
-Fri Jun 29 20:51:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/cgi/session.rb (create_new_id): don't cut off md5.hexdigest to
-	  follow Ruby 1.8.
-
-Fri Jun 29 17:10:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.h: constified.
-
-	* debug.c (ruby_set_debug_option): separated from main.c.
-
-	* gc.c (ruby_gc_stress), signal.c (ruby_enable_coredump): prefixed.
-
-Fri Jun 29 16:39:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_new): fix to return a proc object
-	  which block is contained ([ruby-dev:31056]).
-
-Fri Jun 29 15:43:59 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_pow): get rid of division by zero.  reported by
-	  Yusuke ENDOH <mame AT tsg.ne.jp> [ruby-dev:31040]
-
-	* numeric.c (int_round): do nothing when rounding by zeroth digit.
-	  check underflow.  [ruby-dev:31043]
-
-Fri Jun 29 15:32:00 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* configure.in: add fastcall attribute check.
-
-Fri Jun 29 14:51:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (assoc_list): remove expanded hash literal (no splat).
-
-	* lib/webrick/httpstatus.rb (WEBrick::HTTPStatus::EOFError): adapt
-	  to new syntax.
-
-Fri Jun 29 14:48:18 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/insns2vm.rb, lib/vm/instruction.rb: move process body
-	  to lib/vm/instruction.rb.
-
-	* common.mk: fix aotc rule.
-	  experimental. bin/ruby2cext is not added yet.
-
-Fri Jun 29 11:23:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (dsym): return non-null NODE even if yyerror().  based on a
-	  patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:31085]
-
-Thu Jun 28 23:29:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (assoc_list): odd number check only for NODE_ARRAY.
-	  [ruby-dev:31082]
-
-Thu Jun 28 22:24:33 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* win32/Makefile.sub: define FUNC_FASTCALL macro.
-
-	* vm.h: fix to use FUNC_FASTCALL macro.
-	  TODO: add FUNC_FASTCALL macro by configure.
-
-Thu Jun 28 19:38:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: fix to remove -Wall warnings on gcc.
-
-	* compile.c (make_name_with_str): removed. use rb_sprintf() instead.
-
-Thu Jun 28 18:53:01 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (rb_big_hash): fix hash area.
-
-Thu Jun 28 15:00:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_getline): local variable to be
-	  initialized.  [ruby-dev:31077]
-
-Thu Jun 28 11:30:39 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (rb_obj_id): use SIGNED_VALUE instead of long.
-
-Thu Jun 28 05:01:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk (run.gdb): fix to load $(srcdir)/.gdbinit
-
-	* vm.c (rb_vm_set_finish_env): add a cast.
-
-	* vm.h: support __fastcall for MSVC.
-
-Thu Jun 28 02:12:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: fix to untouch $:.
-
-Thu Jun 28 02:03:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (setup_args): change parameter type.
-
-Thu Jun 28 02:03:39 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (rb_intern2): unconstify cast.
-
-Thu Jun 28 01:44:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (rb_intern2): don't allocate a string object at first.
-	  [ruby-dev:31064]
-
-Thu Jun 28 01:24:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: fix to show file name.
-
-	* bootstraptest/test_*.rb: add bootstrap tests.
-
-Thu Jun 28 01:22:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/node.h, parse.y, gc.c, iseq.c: remove NODE_CREF.
-
-Thu Jun 28 01:19:43 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix popped backref and others.
-	  ([ruby-dev:31068]).
-
-	* compile.c (iseq_compile_each): remove needless statements.
-
-Wed Jun 27 23:51:33 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c: remove unused functions.
-
-Wed Jun 27 20:46:05 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h, win32/Makefile.sub, win32/configure.bat,
-	  win32/mkexports.rb, win32/setup.mak, win32/win32.c: import
-	  x64-mswin64 port.
-
-Wed Jun 27 20:31:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_translate_direct_threaded_code): fix prototype
-	  function name.
-
-	* vm.h: add correct cast.
-
-Wed Jun 27 17:08:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_evalbody.ci: support OPT_CALL_THREADED_CODE.
-
-	* insns.def, vm.c, vm.h: ditto.
-
-	* vm.h: add VM_CFP_CNT() and VM_SP_CNT().
-
-Wed Jun 27 04:23:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix type error.
-
-Wed Jun 27 03:26:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (compile_massign), insns.def (expandarray): support
-	  postarg with massign (a, *b, c = ...).
-
-	* bootstraptest/test_massign.rb: add tests for above.
-
-	* compile.h: fix debug macro names.
-
-Wed Jun 27 00:18:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_clear): need to check STR_EMBED_P() before
-	  free()ing memory.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.
-	  [ruby-dev:31062]
-
-Tue Jun 26 16:39:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_getgroups): use GIDT2NUM for rb_gid_t.
-
-Tue Jun 26 16:28:24 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_wait_fd_rw): terminate fdset.
-
-Tue Jun 26 16:26:58 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regint.h: IL32LLP64 support.
-
-Tue Jun 26 16:22:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (ruby_node_name): update node names.
-
-Tue Jun 26 15:21:20 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h: IL32LLP64 support.
-
-	* bignum.c (bigfixize, rb_cstr_to_inum): ditto.
-
-	* insns.def (opt_plus, opt_minus, opt_mult): ditto.
-
-Tue Jun 26 15:04:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_fiber_s_new): revert initializing VM stack.
-
-	* yarvcore.c (th_init2): ditto.
-
-	* vm.c, vm.h: fix to stop using Qundef on VM stack.  According to
-	  this change, VM stack should not include Qundef value.
-
-	* insns.def (putundef): removed.
-
-	* compile.c (iseq_compile_each): ditto.
-
-	* eval.c (eval): fix spacing.
-
-Tue Jun 26 04:03:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_yield_with_cfunc), proc.c: fix Method#to_proc
-	  to return lambda Proc ([ruby-dev:31021], [ruby-dev:31037]).
-
-Tue Jun 26 03:46:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_fiber_s_new): fix to clear rb_thread_t#tag.
-	  [ruby-dev:30995]
-
-Tue Jun 26 03:38:31 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_fiber_s_new), yarvcore.c (th_init2): fix to clear
-	  VM stack ([ruby-dev:31046]).
-
-Tue Jun 26 03:15:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: rename setup_arg() to setup_args().
-	  fix to use setup_args() at processing NODE_YIELD.
-
-Tue Jun 26 02:50:24 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (setup_arg): support kind of "m(*ary, x)" method call.
-	  ([ruby-dev:31048]).
-
-Tue Jun 26 00:28:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci, vm.c: complete block parameter support.
-	  post arguments, optional arguments, block argument.
-
-	* compile.c, parse.y: fix {|a|} parameter.
-
-	* insnshelper.ci, insns.def: revert caller_setup_args() option
-	  (need_block_check) parameter.
-
-Mon Jun 25 20:18:44 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (RVALUE): in RVALUE and RBasic, flags must be the same type.
-
-Mon Jun 25 18:02:55 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/pty/extconf.rb: skip wince and win64.
-
-Mon Jun 25 17:59:32 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/node.h (NODE_LMASK, nd_line): shouldn't use int and/or
-	  long carelessly.
-
-Mon Jun 25 11:36:35 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.h: add RUBY_ prefix to debug macros.
-
-	* cont.c, proc.c, yarvcore.c,
-
-	* gc.c: define ruby_gc_debug_indent variable to debug mark/free.
-
-	* vm.c, insnhelper.ci: rename some functions to vm_* or rb_vm_*.
-	  move some functions, definitions, declarations to suitable files.
-
-	* eval.c, yarvcore.h, eval_error.ci, insnhelper.ci: ditto.
-
-Mon Jun 25 09:45:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.ci, eval_jump.ci, eval_method.ci, eval_safe.ci: c-mode.
-
-Mon Jun 25 05:27:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c: remove ruby_current_node and change eval() prototype.
-	  fix to use rb_sourcefile/line() instead of ruby_sourcefile/line.
-
-	* error.c, eval_error.ci, eval_load.c, eval_safe.ci, gc.c,
-	  include/ruby/intern.h, parse.y, process.c, ruby.c: ditto.
-
-	* vm.c: fix spaces.
-
-Mon Jun 25 04:20:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_*.h: rename to eval_*.ci.
-
-	* common.mk: ditto.
-
-	* eval_error.ci: remove ruby_set_current_source().
-
-	* error.c, eval.c, ruby.c: ditto.
-
-	* eval_safe.c, proc.c: remove unused macros.
-
-Mon Jun 25 03:37:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (caller_setup_args): add need_block_check option.
-
-	* insns.def: ditto.
-
-	* yarvcore.h: add GetCoreDataFromValue().
-
-Mon Jun 25 02:14:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* call_cfunc.ci: removed.
-
-	* insnhelper.ci: added. this function includes all functions that
-	  vm insns need.
-
-	* common.mk: ditto.
-
-	* insnhelper.h, vm.h, vm.c: move some declaration.
-
-	* gc.h: remove GC_CHECK() macro because GC.stress is more useful.
-
-	* compile.c, iseq.c, vm_dump: ditto.
-
-	* gc.h, thread.c: move a prototype declaration.
-
-	* debug.c, debug.h: rename some functions.
-
-	* compile.h: ditto.
-
-Mon Jun 25 00:45:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (invokesuper): fix error message.
-
-Mon Jun 25 00:14:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: some refactoring.
-	  * rename th_* to vm_*.
-	  * remove unused variables functions.
-	  * add prototypes.
-
-	* blockinlining.c, compile.c, cont.c, eval.c, eval_intern.h,
-	  eval_jump.h, eval_load.c, inits.c, insns.def, iseq.c, parse.y,
-	  proc.c, process.c, signal.c, thread.c, vm.c, vm_dump.c,
-	  vm_evalbody.ci, yarvcore.c, yarvcore.h: ditto.
-
-Sun Jun 24 22:32:00 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_method.h (rb_add_method): fix to check 0.
-
-Sun Jun 24 22:00:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insn_send.ci: removed.
-
-	* common.mk: ditto.
-
-	* vm.c (vm_call_bmethod), isnsn.def: added.  fix to use this
-	  function instead of using goto.
-
-	* vm.c (vm_call_bmethod): renamed from th_invoke_bmethod().
-
-	* vm.c (vm_method_missing): renamed from eval_method_missing().
-
-	* vm_evalbody.ci: remove tmp_* variables.
-
-	* insnhelper.h: add some macros.
-
-	* insns.def: forbid zsuper from method defined by define_method().
-
-	* test/ruby/test_super.rb: ditto.
-
-Sun Jun 24 20:01:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_macro.def: removed.
-
-	* insn_send.ci: added.  this file includes send instruction body.
-
-	* common.mk: ditto.
-
-	* insns.def: ditto.
-
-	* tool/insns2vm.rb: ditto.
-
-	* vm.c: ditto.
-
-Sun Jun 24 19:30:37 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.h (RESTORE_REGS): add do/while(0) around macro.
-
-	* vm.c, vm_macro.def: remove macro_eval_invoke_func() and
-	  add vm_setup_method().  use it instead.
-
-Sun Jun 24 19:02:33 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_macro.def : remove macro_eval_invoke_cfunc() and
-	  add vm_call_cfunc().
-
-Sun Jun 24 17:54:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, vm.c: add/fix stack overflow check.
-
-Sun Jun 24 17:28:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.h: change CHECK_STACK_OVERFLOW() to throw exception.
-
-	* vm.c (caller_setup_arg), vm_macro.def: remove
-	  macro_eval_setup_send_arguments and add caller_setup_arg().
-
-	* insns.def: ditto.
-
-	* bootstraptest/test_method.rb: add splat arg tests.
-
-Sun Jun 24 16:35:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (proc_to_s): used a variable before initialized.
-
-Sun Jun 24 16:05:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (callee_setup_arg): added.  support correct post arg.
-
-	* vm_macro.def (macro_eval_invoke_func): fix to use
-	  callee_setup_arg.
-
-	* compile.c (set_arguments): adjust for above changes.
-
-	* compile.c (iseq_compile_each): ditto.
-
-	* iseq.c (ruby_iseq_disasm): ditto.
-
-	* yarvcore.h: add rb_iseq_t#post_arg_start and arg_size.
-
-	* bootstraptest/test_method.rb: add post arg tests.
-
-Sun Jun 24 16:10:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (proc_to_s): suppress warning, and reduced duplicated code.
-
-Sun Jun 24 15:33:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: set default directory to
-	  '/tmp/bootstraptest.tmpwd' and add --dir option.
-	  fix to output driver and target information.
-
-	* common.mk: fix to run btest on BASERUBY and
-	  add OPTS to pass option ("make btest OPTS=...").
-
-Sun Jun 24 03:05:00 2007  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (enum_minmax): fix SEGV by [].minmax.
-
-Sat Jun 23 17:18:19 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (match_inspect): MatchData#inspect implemented.
-
-Sat Jun 23 15:00:16 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_minmax): new method to get the minimum and maximum
-	  values from the enumerable at once.
-
-	* enum.c (enum_minmax_by): ditto.
-
-Sat Jun 23 01:25:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_assoc): new method.
-
-	* hash.c (rb_hash_rassoc): ditto.
-
-	* hash.c (rb_hash_flatten): ditto.
-
-Fri Jun 22 23:55:59 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upto): add optional argument to specify
-	  exclusiveness.
-
-	* range.c (range_step): use String#upto with optional argument.
-
-	* range.c (range_each): ditto.
-
-Fri Jun 22 19:55:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* proc.c (proc_to_s): revert the change from %p to %lx at YARV
-	  merge time.
-
-Fri Jun 22 19:33:49 2007  Tanaka Akira  <akr@fsij.org>
-
-	* proc.c (proc_to_s): show is_lambda.
-
-Thu Jun 21 20:36:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_sort): remove hash specific implementation.
-
-Thu Jun 21 20:28:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_select): returns new hash, not assoc array.
-	  [ruby-core:11504]
-
-	* hash.c (env_select): ditto.
-
-Thu Jun 21 23:08:19 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (rb_intern2): ID_JUNK test based on len, not by NUL.
-
-Thu Jun 21 19:42:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* yarvcore.c (rb_thread_mark): mark also thrown_errinfo.
-
-Thu Jun 21 17:13:44 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_intern2): name may not be NUL-terminated.
-
-Wed Jun 20 08:27:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval_error.h (error_print): show full stacktrace on
-	  non-SystemStackError.
-
-Wed Jun 20 04:45:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_intern2): use rb_intern2 to intern without trailing
-	  equal sign.
-
-	* parse.y (rb_intern2, ripper_id2sym): fixed indent.
-
-Tue Jun 19 10:55:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_load.c (load_ext, rb_require_safe): pass VALUE instead of
-	  pointer.  [ruby-Bugs-11659]
-
-Mon Jun 18 08:47:54 2007  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/{extconf.rb,ossl_ssl_session.c}:
-	  Fix ruby-Bugs-11513.
-
-	* ext/openssl/ossl_pkey_ec.c
-	  New methods EC::Point.[eql,make_affine!,invert!,on_curve?,infinity?]
-	  By default output the same key form as the openssl command.
-
-	* ext/openssl/ossl_rand.c
-	  New method Random.status?
-
-	* test/openssl/test_ec.rb
-	  New tests.
-
-Mon Jun 18 17:04:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_load.c (rb_require_safe, ruby_init_ext): load with ruby level
-	  cfp.  [ruby-core:10779]
-
-	* eval_intern.h, vm.c (rb_vm_call_cfunc): new function to call a
-	  function with ruby level cfp.
-
-Mon Jun 18 16:57:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yycompile): disable trace while creating ruby_debug_lines.
-	  [ruby-talk:253586]
-
-	* thread.c (ruby_suppress_tracing): new function to call a function
-	  with suppressing trace.
-
-	* lib/debug.rb, lib/tracer.rb: for YARV.
-
-Mon Jun 18 13:54:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): return EXIT_FAILURE if any exceptions occurred
-	  in at_exit blocks.  [ruby-core:11263]
-
-Mon Jun 18 02:49:16 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (env_mark): fix to mark block.proc.
-
-	* vm.c (th_make_proc_from_block): set created proc to block->proc.
-
-Mon Jun 18 02:48:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c (vm_stack_dump_raw): hide VM stack trace.
-
-Mon Jun 18 02:43:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* signal.c (sigsegv): clear gc_stress flag on SEGV.
-
-Mon Jun 18 01:14:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_path2class): get rid of dangling pointer caused by
-	  optimized out value.
-
-	* variable.c (rb_global_entry, rb_f_untrace_var, rb_alias_variable,
-	  rb_generic_ivar_table, generic_ivar_get, generic_ivar_set,
-	  generic_ivar_defined, generic_ivar_remove, rb_mark_generic_ivar,
-	  rb_free_generic_ivar, rb_copy_generic_ivar,
-	  rb_obj_instance_variables): suppress warnings.
-
-Sun Jun 17 11:11:07 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_method_missing): avoid a warning "too many arguments
-	  for format string" on "./ruby -ve 'def m() super end; m'".
-
-Sat Jun 16 22:24:17 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (garbage_collect): re-introduce ruby_current_node marking code.
-	  [ruby-dev:31005]
-
-Sat Jun 16 21:37:43 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (gc_sweep): re-introduce heap extension strategy change.
-	  [ruby-dev:31005]
-
-Fri Jun 15 22:59:37 2007  Tanaka Akira  <akr@fsij.org>
-
-	* .gdbinit: new file to ease debugging using gdb.
-
-Fri Jun 15 22:33:55 2007  Tanaka Akira  <akr@fsij.org>
-
-	* signal.c (default_handler): func argument removed.
-	  (trap_handler): support SYSTEM_DEFAULT.  call default_handler
-	  internally.
-	  (sig_trap): don't call default_handler.
-	  [ruby-dev:30999]
-
-Fri Jun 15 22:33:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (realclean): separate local and ext.
-
-	* ext/extmk.rb: not remove unrelated directories.
-
-Fri Jun 15 20:50:02 2007  Tanaka Akira  <akr@fsij.org>
-
-	* keywords: enclose C code in declaration section by %{ and %} to
-	  avoid extra semicolon after #ifdef RIPPER.
-	  pointed by eban.
-
-Fri Jun 15 18:56:52 2007  Tanaka Akira  <akr@fsij.org>
-
-	* signal.c (trap_handler): trap("SIGSEGV", "DEFAULT") may cause wrong
-	  trap error because SIG_DFL may be zero.
-
-Fri Jun 15 15:55:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (setconstant, toregexp): fix to mark object correctly.
-
-Fri Jun 15 13:24:18 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* hash.c: exchange semantics of Hash#each and Hash#each_pair.
-	  pointed out by [ruby-dev:30997].
-
-	* test/ruby/test_iterator.rb: ditto.
-
-	* test/ruby/test_yield.rb: ditto.
-
-Fri Jun 15 12:38:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_iterator.rb: remove debug code (GC.stress=true).
-
-Fri Jun 15 12:25:33 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (th_yield_setup_args): |v| should work as |v,|.
-	  ex) def m;yield 1, 2; end; m{|v| p v} #=> 1
-
-	* parse.y: apply above change for "for" statement.
-
-	* test/ruby/test_assignment.rb: ditto
-
-	* test/ruby/test_basicinstructions.rb: ditto.
-
-	* test/ruby/test_iterator.rb: ditto.
-
-	* test/ruby/test_yield.rb: ditto.
-
-	* compile.c (iseq_compile_each): fix debug.
-
-Fri Jun 15 12:22:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (ruby_finalize_1): rb_thread_t#errinfo should be clear with
-	  Qnil.
-
-Fri Jun 15 12:20:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_cont_call): forbid cross fiber continuation call.
-
-	* test/ruby/test_fiber.rb: ditto.
-
-Fri Jun 15 12:14:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* sample/test.rb: fix to show line information whether test succeeds.
-
-Thu Jun 14 17:16:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval_load.c (Init_load): delay allocating an array for rb_load_path
-	  to avoid GC problem in very early stage.
-	  (RUBY_GC_STRESS causes GC in such stage.)
-
-	* variable.c (rb_gc_mark_global_tbl): rb_global_tbl may be 0 in
-	  very early stage.
-
-	* thread.c (thread_cleanup_func) [IA64]: clear register stack position.
-	  (thread_start_func_2) [IA64]: record the beginning of register
-	  stack using extra argument.
-	  (rb_gc_save_machine_context) [IA64]: record the end of register
-	  stack.
-
-	* gc.c [IA64] (SET_STACK_END): record the end of register stack.
-	  (garbage_collect) [IA64]: use recorded register stack area for
-	  GC marking.
-	  (yarv_machine_stack_mark) [IA64]: GC mark from the register stack
-	  area.
-
-	* yarvcore.c [IA64] (rb_gc_register_stack_start): defined.
-	  (Init_VM): store th->self on stack to fix GC problem.
-	  (Init_yarv) [IA64]: initialize the beginning of register stack.
-
-	* yarvcore.h (struct rb_thread_struct) [IA64]: new members for
-	  register stack area.
-
-	* thread_pthread.ci (thread_start_func_1) [IA64]: call
-	  thread_start_func_2 with the end of register stack.
-
-	* cont.c (struct rb_context_struct) [IA64]: new members for register
-	  stack area.
-	  (cont_mark) [IA64]: GC mark from register stack area.
-	  (cont_free) [IA64]: free saved register stack.
-	  (cont_save_machine_stack) [IA64]: record the position and contents
-	  of the register stack.
-	  (cont_capture): store cont->self on stack to fix GC problem.
-	  (cont_restore_1) [IA64]: restore the register stack.
-	  [IA64] (register_stack_extend): new function.
-	  (cont_restore_0) [IA64]: call register_stack_extend instead of
-	  cont_restore_1.
-
-	[ruby-dev:30982]
-
-Thu Jun 14 17:09:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser): handle more
-	  extensions.  [ruby-dev:30972]
-
-Thu Jun 14 14:40:42 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/securerandom.rb: document updated.
-	  suggested by NaHi.  [ruby-dev:30966]
-
-Wed Jun 13 22:42:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (garbage_collect): update IA64 register stack code.
-	  [ruby-dev:30971]
-
-Wed Jun 13 06:05:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): prohibit loading extension libraries to
-	  miniruby.
-
-Tue Jun 12 21:50:51 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (call_args): no allow splat after assocs.  takes
-	  consistency over compatibility.
-
-	* parse.y (call_args2): ditto
-
-Tue Jun 12 14:53:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (Logging.quiet, Logging.message): added quiet flag and
-	  use it.  [ruby-core:10909]
-
-	* lib/mkmf.rb (find_header): use header names in the message.
-
-Sun Jun 10 18:37:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/probeprofiler/probeprofiler.c: clean warnings.
-
-Sun Jun 10 18:32:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/isinf.c, missing/dup2.c, missing/strtod.c, missing/x68.c,
-	  missing/alloca.c: use "ruby/config.h".
-
-Sun Jun 10 17:49:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (install_recursive): should check parent directories of
-	  the destination.  [ruby-dev:30947]
-
-Sun Jun 10 16:59:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (do_block, brace_block): fix line numbers.  [ruby-dev:30831]
-
-Sun Jun 10 16:57:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (install_recursive): add :glob option rather than
-	  using FNM_DOTMACH.
-
-	* instruby.rb (ext-comm): make header directory first.
-
-Sun Jun 10 16:10:58 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb: typo.
-
-Sun Jun 10 16:07:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (install_recursive): skip .svn directories.
-
-Sun Jun 10 15:44:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): rubyhdrdir was missing.
-
-Sun Jun 10 15:26:36 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in: use --output-file for gperf to not leave lex.c.tmp.
-
-Sun Jun 10 15:11:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (XCFLAGS): -I. is needed for *.inc.
-
-	* ext/extmk.rb: prepend also topdir to mflags at last.
-
-Sun Jun 10 13:47:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb (test_should_propagate_signaled):
-	  get rid of invoking shell.  [ruby-dev:30942]
-
-Sun Jun 10 12:56:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby: moved public headers.
-
-	* instruby.rb (install_recursive): skip backup files.
-
-	* instruby.rb (ext-comm): install only current platform headers.
-
-Sun Jun 10 10:42:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/securerandom.rb: renamed from lib/secrand.rb.
-	  suggested by NaHi.  [ruby-dev:30934]
-
-Sat Jun  9 06:40:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/secrand.rb: rename SecRand() to SecRand.random_number.
-	  suggested by NaHi.  [ruby-dev:30934]
-
-Fri Jun  8 16:34:20 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ext/zlib/zlib.c (gzfile_s_open): use FilePathValue to support
-	  to_path.
-
-Fri Jun  8 16:11:00 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_jump.h: th->errinfo should clear with nil.
-
-Fri Jun  8 14:53:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (call_args): allow splat argument after unpacked
-	  assocs like 1.8 does.
-
-	* parse.y (call_args): ditto.
-
-Fri Jun  8 14:26:18 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/secrand.rb: new file for secure random interface.
-
-	* lib/cgi/session.rb: use secrand for generating cookies.
-
-Fri Jun  8 12:44:37 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {win32,wince}/Makefile.sub: add lex.c rule.
-
-Fri Jun  8 11:54:18 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lex.c.blt: moved from lex.c.
-
-	* Makefile.in: use lex.c.blt if gperf is not available.
-	  [ruby-list:8212], [ruby-list:8214], [ruby-list:24667],
-	  [ruby-talk:120857], [ruby-dev:28102]
-
-Thu Jun  7 21:38:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_execute_interrupts): invoke ensure when
-	  main thread exits.
-
-Thu Jun  7 19:02:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb: call original "method" method instead of redefined one.
-
-Thu Jun  7 17:20:57 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (prepare_iseq_build): freeze filename and name string.
-
-	* variable.c: freeze class name string.
-
-Thu Jun  7 12:48:33 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_restore_1): fix to check root fiber [ruby-dev:30911].
-
-	* test/ruby/test_fiber.rb: add a test.
-
-Thu Jun  7 07:24:36 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/json/common.rb: Ponder offering parse! method.
-
-	* lib/json/editor.rb: be a bit more robust while loading data.
-
-	* ext/json/ext/{generator,parser}/extconf.rb:
-	  add a have_header directive for st.h
-
-	* test/json: fix some tests.
-
-Thu Jun  7 03:29:18 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test_fiber.rb: add a test (Continuation and Fiber).
-
-Thu Jun  7 03:17:24 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_new): add debug message.
-
-	* cont.c (cont_restore_1): copy stack information from fiber.
-
-	* cont.c (rb_fiber_s_new): fix to mark created fiber.
-
-	* test/ruby/test_fiber.rb: add some tests around Thread and Fiber.
-
-	* yarvcore.c (thread_free): fix to skip freeing stack if root fiber
-	  is available.
-
-Thu Jun  7 01:03:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h, eval.c (ruby_init): remove POP_TAG_INIT().
-
-	* cont.c (rb_fiber_start): remove zero-clearing tag.
-
-Wed Jun  6 20:23:46 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (invokeblock): fix of splat argument.
-	  (splat same as normal method dispatch)
-
-Wed Jun  6 16:27:25 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insns.def: fixed indentation.
-
-Wed Jun  6 10:58:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_yield): fix to check Qundef.
-
-Wed Jun  6 10:57:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_continuation.rb: add a test for last commit.
-
-Wed Jun  6 10:55:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_cont_call): forbid calling dead fiber with
-	  Continuation#call.
-
-Wed Jun  6 10:50:01 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix around yield arguments
-	  (with NODE_ARGSCAT).
-
-Wed Jun  6 02:50:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_fiber_start): clear th->tag and check error to fix
-	  [ruby-dev:30888] and [ruby-dev:30889].
-
-	* eval_intern.h: fix rb_fiber_start() prototype.
-
-	* test/ruby/test_fiber.rb: add tests for above.
-
-Wed Jun  6 02:40:20 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insnhelper.h, insns.def (DEC_SP): shouldn't use unary minus operator
-	  in pointer operation. some compilers (such as VC++8 x64) cannot deal
-	  it with expected way.
-
-Wed Jun  6 02:19:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y (new_yield), compile.c (iseq_compile_each): fix
-	  passing parameter.
-
-	* eval.c, eval_jump.h: simplify rb_yield*.
-
-	* proc.c (proc_mark): fix to mark proc->block.proc.
-
-	* proc.c (Init_Proc): add Proc#lambda?
-
-	* test/ruby/test_lambda.rb: add some tests.
-
-	* vm.c (invoke_block): fix to check lambda block or not.
-
-	* vm.c (th_yield_setup_args): fix to check arguments size
-	  when lambda block.
-
-Tue Jun  5 16:30:38 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_p): returns arguments to intervene.  [ruby-dev:29736]
-
-Tue Jun  5 14:07:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (invokeblock): check block is created by lambda
-	  or Proc.new.
-
-	* vm.c (block_proc_is_lambda): added.
-
-Tue Jun  5 14:47:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/pp.rb (PP::PPMethods::seplist): revert last change to work
-	  around wrapper bug.  [ruby-dev:30840]
-
-Tue Jun  5 14:11:15 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (kanji_convert): Fix guess fallback.
-
-Tue Jun  5 13:32:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c, dir.c, eval.c, eval_jump.h, eval_method.h, numeric.c,
-	  pack.c, parse.y, re.c, thread.c, vm.c, vm_dump.c, call_cfunc.ci,
-	  thread_pthread.ci, thread_win32.ci: fixed indentation.
-
-	* call_cfunc.ci: protoized.
-
-	* thread_win32.ci: fixed typo.
-
-Tue Jun  5 13:17:11 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* call_cfunc.ci, compile.c, dir.c, eval.c, eval_jump.h, numeric.c,
-	  pack.c, re.c, thread.c, thread_win32.ci, vm.c, vm_dump.c: fixed
-	  indentation.
-
-Mon Jun  4 21:15:45 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/json.rb, lib/json, ext/json, test/json:
-	  import JSON library.
-
-	* ext/nkf: import nkf.c rev:1.124
-	  Support CP10001.
-
-Mon Jun  4 20:52:58 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_round): should not just truncate.
-
-Sat Jun  2 16:48:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (Fiber#pass): rename to Fiber#yield.  Block parameter
-	  of fiber body receive first yield values.
-	  e.g.: Fiber.new{|x| p x}.yield(:ok) #=> :ok
-
-	* cont.c: rename rb_context_t#retval to rb_context_t#value.
-
-	* test/ruby/test_fiber.rb: ditto.
-
-Sat Jun  2 16:45:21 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (Init_Proc): remove a line break.
-
-Sat Jun  2 01:27:27 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_round): small optimization to handle bignums.
-
-Fri Jun  1 13:02:35 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insnhelper.h (INC_SP): shouldn't cast ``x'' to unsigned type because
-	  it might be a negative value.
-
-	* insnhelper.h, insns.def: shouldn't use unary minus operator in index
-	  operator. some compilers (such as VC++8 x64) cannot deal it with
-	  expected way.
-
-Fri Jun  1 11:33:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (num_round): should convert self to Float.
-	  [ruby-dev:30860]
-
-Fri Jun  1 02:01:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_round): now takes optional argument to specify
-	  number of digits, like round() in Python/PHP.
-
-	* numeric.c (num_round): ditto.
-
-Fri Jun  1 01:58:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (each_with_index_i): should work well with continuation.
-	  a patch from sheepman <sheepman AT sheepman.sakura.ne.jp>.
-	  [ruby-dev:30846]
-
-Thu May 31 17:27:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/benchmark.rb (Benchmark::Job::item): avoid modifying the
-	  argument unintentionally.  [ruby-talk:253676]
-
-Wed May 30 14:43:00 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_capture): store all local variables in heap
-	  ([ruby-dev:30832]).
-
-	* vm.c (th_stack_to_heap): added.
-
-	* test/ruby/test_continuation.rb: add a test for above.
-
-	* eval_intern.h (th_get_ruby_level_cfp): fix to clean code.
-
-Wed May 30 13:32:34 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (ResponseParser#next_token): fixed
-	  error message.
-
-	* lib/net/imap.rb (ResponseParser#parse_error): fixed
-	  the condition not to refer @token.symbol unexpectedly.
-	  Thanks, Dick Monahan.
-
-Wed May 30 13:24:33 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (Net::FTP#transfercmd): skip 2XX
-	  responses for some FTP servers.
-
-Wed May 30 04:18:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval_cmd): just return if no exceptions.
-	  [ruby-dev:30820]
-
-Wed May 30 02:14:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (interrupt_init): needs to pass nil for Interrupt.
-	  [ruby-core:11038]
-
-	* signal.c (trap): fixed segfaults.  [ruby-dev:30830]
-
-Wed May 30 00:50:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_source_filename, obj_free): suppress warnings.
-
-	* gc.c (garbage_collect, yarv_machine_stack_mark): fixed typo.
-	  http://bugs.debian.org/426267
-
-Wed May 30 00:24:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (open_args, arg_ambiguous, parser_warning): should not use
-	  rb_warning in the parser.
-
-Tue May 29 12:31:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_opendir): removed duplicated code.
-
-Tue May 29 10:55:24 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: fix bug around Continuation and Fiber.
-
-	* test/ruby/test_continuation.rb: add tests for Continuation.
-
-Tue May 29 10:54:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_opendir, rb_w32_readdir): eliminate magic
-	  numbers.
-
-Mon May 28 10:27:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c: fixed a function name.
-
-Mon May 28 03:56:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: support Fiber.  Check test/ruby/test_fiber.rb for detail.
-	  Fiber is known as "Micro Thread", "Coroutine", and other terms.
-	  At this time, only Fiber#pass is supported to change context.
-	  I want to know more suitable method name/API for Fiber (... do you
-	  know more suitable class name instead of Fiber?) as "suspend/resume",
-	  "call", "yield", "start/kick/stop/restart", ....
-
-	* eval.c, eval_intern.h, thread.c, yarvcore.c, yarvcore.h: ditto.
-
-Sat May 26 00:38:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_exec_internal): do nothing if no code.
-
-	* compile.c (rb_iseq_compile): check node if NULL before check
-	  nd_type.  [ruby-talk:252956]
-
-Sat May 26 00:05:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb (test_should_propagate_signaled):
-	  skip tests for exitstatus and termsig on the platforms where
-	  signals not supported.
-
-Fri May 25 16:04:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* yarvcore.c (Init_VM): wrap already initialized structs to use
-	  it directly.
-
-Fri May 25 11:09:47 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regint.h (include): on some platform, defines.h redefines
-	  SIZE_OF_LONG_LONG so shouldn't re-include config.h after included
-	  defines.h.
-
-	* regint.h (vsnprintf): ruby on windows already have vsnprintf macro.
-
-Thu May 24 12:07:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: check across trap violation.
-
-	* eval.c, yarvcore.h: ditto.
-
-Thu May 24 11:46:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c, yarvcore.c: fix to mark VM structure on startup.
-
-	* yarvcore.h: disable USE_CACHED_VALUE.
-
-Thu May 24 01:54:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: support callcc which everyone love.
-	  incomplete. please give me bug reports.
-
-	* common.mk, inits.c, thread.c: ditto.
-
-	* yarvcore.c: export thread_mark().
-
-	* yarvcore.h: disable value cache option.
-
-	* eval_intern.h: set th_get_ruby_level_cfp to inline.
-
-Wed May 23 15:39:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* common.mk: add a rule for regsyntax.c.
-
-Wed May 23 10:31:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* oniguruma.h: updated to Oniguruma 5.7.0.
-
-	* regsyntax.c, unicode.c: new files along with Oniguruma 5.x.
-
-Wed May 23 06:51:46 2007  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#[]): get rid of exceptions being raised.
-	  [ruby-dev:30740], Thanks Kentaro KAWAMOTO.
-
-Wed May 23 05:49:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb, ext/purelib.rb, lib/mkmf.rb, runruby.rb: clear default
-	  load path to get rid of load pre-installed extensions/libraries.
-	  [ruby-core:11017]
-
-Tue May 22 16:37:36 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (set_arg0): support RSTRING_LEN on HP-UX.  a patch from
-	  WATANABE Tetsuya <Tetsuya.WATANABE AT nifty.com>.  [ruby-dev:30806]
-
-Mon May 21 13:40:00 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, vm_macro.def: support tail call optimization
-	  (on default, this feature is not enabled).
-
-	* iseq.c, compile.c, vm_opts.h: add "tailcall_optimization"
-	  option.
-
-	* sample/test.rb (test_ok): fix to adjust tailcall stack layout.
-
-	* insns.def, vm.c, compile.c, yarvcore.c, yarvcore.h:
-	  add opt_gt, opt_le instructions.
-
-Mon May 21 03:34:06 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: CRAM-MD5 authentication did not work.
-	  [ruby-dev:30770]
-
-Sat May 19 10:26:01 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (Date._parse): detects some OFX dates
-	  (Of course not fully).
-
-Sat May 19 03:08:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_inject): minor improvement.  [ruby-dev:30792]
-
-	* enum.c (one_i): no needs to iterate once the result became false.
-
-	* enum.c (enum_one): fix for an example.
-
-	* enum.c (one_iter_i, none_iter_i): DRY.;
-
-Sat May 19 01:07:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): it is now can work without block.  you
-	  have to specify two argument method name as the first argument.
-
-	* enum.c (Init_Enumerable): reduce is new alias to inject.
-
-Sat May 19 01:05:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (Init_File): method definition mismatch.
-
-Fri May 18 16:44:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (Init_File): add to_path method to File objects.
-
-Fri May 18 11:12:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (DllMain, ruby_init_loadpath): use DLL instance handle given
-	  to DllMain instead of VirtualQuery so that loadpath becomes relative
-	  from the DLL on WinCE too.
-
-Thu May 17 17:03:11 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-label-indent): for yacc rules.
-
-Thu May 17 13:30:27 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_arg): remove typo from ripper description.
-
-Thu May 17 13:23:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y, compile.c (set_arguments): fix to support in-paren
-	  parameter (ex: def foo((a, b))).
-
-Thu May 17 13:01:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (ruby_iseq_disasm): fix to show post arg info.
-
-Thu May 17 12:56:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* debug.c (ruby_debug_node): fix to show node line.
-
-Wed May 16 21:48:44 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb (Logger::Application): remove meaningless logdev
-	  attribute and added logger attribute instead.  [ruby-core:11143]
-	  also added Logger#formatter rdoc comment.
-
-Tue May 15 16:40:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb (test_endblockwarn): now parser
-	  warnings emit source names and line numbers.
-
-Tue May 15 15:01:38 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_stdhandle): stderr should be without buffering,
-	  but mswin32 use buffering when stderr is not connected to tty.
-
-Mon May 14 02:12:07 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_zip): a.zip(b,c) should return an array, not
-	  enumerator.
-
-	* array.c (rb_ary_zip): a.zip(b,c) should return array with size
-	  truncated to the size of its shortest argument array.
-	  [incompatible]
-
-Mon May 14 01:54:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_choice): should return nil when the array is
-	  empty.
-
-Sat May 12 18:26:36 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (tokens): forgot to add strip. [ruby-core:11120]
-
-	* test/net/http/test_http.rb: test Net::HTTP.post_form.
-
-Fri May 11 15:27:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (iseq_data_to_ary): internal IDs must not be exposed.
-	  [ruby-core:11073]
-
-	* parse.y (internal_id_gen): now returns scope local ID instead of
-	  global one.
-
-Thu May 10 15:15:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_super.rb: add tests.
-
-Thu May 10 15:14:05 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_s_conv): rdoc fix.
-
-Thu May 10 15:09:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (POINTER_P): pointer may be larger than long.
-
-	* parse.y (vtable_size, vtable_included, vtable_tblcpy,
-	  vtable_to_tbl): constified.
-
-Thu May 10 10:13:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_priority): rdoc fix; the initial value is
-	  inherited from the creating thread.  [ruby-core:10607]
-
-Wed May  9 12:28:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (Init_Bignum), numeric.c (Init_Numeric): added fdiv as
-	  aliases of quo.  [ruby-dev:30771]
-
-Tue May  8 23:39:09 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (Date._parse): revised treatment of
-	  hyphened/separatorless dates.
-
-	* lib/date/format.rb: some trivial adjustments.
-
-Tue May  8 20:23:07 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: reverted.
-
-Tue May  8 19:32:18 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/rational.rb: fix high-precision Rationals cannot be
-	  converted to Floats. [ruby-Bugs:10502], [ruby-core:11069],
-	  [ruby-dev:30743]
-
-Mon May  7 10:59:55 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/image.rb, test/rss/test_image.rb: fixed Image module
-	  namespace URI. reported by Dmitry Borodaenko. Thanks.
-
-Sun May  6 18:44:11 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (Net::HTTP.post_form): allow an Array of String
-	  for pairs argument. [ruby-Bugs:10340]
-
-	* lib/net/http.rb (Net::HTTP#set_form_data): ditto.
-
-Sun May  6 17:54:36 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: Connection header field might include both of
-	  "keep-alive" token and "close" token. [ruby-core:10818]
-
-Sat May  5 16:26:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/date/format.rb (Format::Bag#method_missing): get rid of
-	  modifying original argument.  [ruby-core:11090]
-
-Thu May  3 22:20:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, defines.h, eval_load.c (rb_feature_p, rb_provided,
-	  search_required, rb_require_safe), ext/extmk.rb: Fix
-	  a bug where a statically linked extension cannot be autoloaded.
-	  [ruby-dev:30023] / [ruby-dev:30239]
-
-	* thread.c: added an internal class, Barrier.
-
-	* thread.c: copied rdocs from fastthread.
-
-	* yarvcore.h (struct rb_vm_struct): moved loading_table from global.
-
-Thu May  3 18:10:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_evalbody.ci, insns.def, vm.c, tool/insns2vm.rb (rb_num_t):
-	  renamed to get rid of name clash.  [ruby-dev:30504]
-
-	* yarvcore.c (ruby_thread_init): ditto.
-
-Wed May  2 18:52:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, yarvcore.h, yarvcore.c, insns.def: fix to mark VM stack
-	  in correct range.
-
-Wed May  2 17:13:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_quo): now calculate in integer.  [ruby-dev:30753]
-
-Wed May  2 15:14:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_method.h: add redefine checks ([ruby-dev:30751]).
-
-Wed May  2 11:22:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: use Qtrue instead of 2.
-
-	* vm.c, insns.def: support "lambda" calling convention.
-
-Wed May  2 06:46:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c, parse.y, ruby.h (rb_compile_warn, rb_compile_warning): warn
-	  for compilation.  the parser should no longer use rb_warn() and
-	  rb_warning().  [ruby-dev:30121]
-
-Wed May  2 05:45:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (assoc): result of assoc_new needs to be an assoc.
-
-Wed May  2 05:40:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_pow): improvement by calculating from MSB and using
-	  factorization.  <http://yowaken.dip.jp/tdiary/20070426.html#p01>
-
-Tue May  1 18:45:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* sample/test.rb: import matzruby's sample/test.rb.
-
-Tue May  1 17:46:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_choice): a new method to choose an element
-	  randomly from an array.
-
-	* array.c (rb_ary_choice): fixed mistake from RDoc.
-
-Tue May  1 13:59:18 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_arity): fix an arity bug ([ruby-core:11060]).
-
-Tue May  1 13:12:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h, compile.c (set_arguments): support post arguments.
-
-	* test/ruby/test_method.rb: add tests for above.
-
-	* test/ruby/test_proc.rb: ditto.
-
-	* proc.c: fix an arity bug ([ruby-core:11029]).
-
-	* vm.c, vm.h, insns.def, vm_dump.h: fix bmethod process.
-
-	* vm.c: support block argument on block parameter.
-
-Fri Apr 27 17:05:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (int_pow): bugfix of overflow detection.
-
-	* numeric.c (int_pow): rb_big_pow() may return other than Bignum.
-
-Fri Apr 27 01:51:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: support multiple splat (e.g, [a, *b, *c, e, *f]).
-
-Fri Apr 27 00:03:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_pow): truncate all zero BDIGITs. [ruby-dev:30733]
-
-Thu Apr 26 17:31:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_pow): reduce multiplying for even number.
-
-	* numeric.c (int_pow): calculate power in Fixnum as possible.
-	  [ruby-dev:30726]
-
-Thu Apr 26 17:18:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y: fixes for ripper.
-
-	* parse.y (primary): reduced duplicated code.
-
-	* parse.y (f_arg_item): should not override by meaningless value.
-
-	* parse.y (f_arg, assocs): should not use $$ before assigned.
-
-	* parse.y (assoc_list): dispatch assoclist_from_args for assocs as
-	  well as args.
-
-	* parse.y (assoc): return assoc if dispatched result is $1.
-
-Thu Apr 26 13:54:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el: new file.  C/C++ style for ruby source code.
-
-Wed Apr 25 19:49:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (unix_send_io, unix_recv_io): use CMSG_DATA to
-	  align file descriptor appropriately.
-
-Wed Apr 25 15:23:29 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (NtInitialize, exit_handler): add initializing and
-	  cleanup of critical section object for select.
-
-	* win32/win32.c (do_select): block reentrance.
-
-	* win32/win32.c (rb_w32_select): 0 sec polling of socket. this is
-	  workaround because winsock cannot do select at same socket at the
-	  same time by two or more threads.
-
-Wed Apr 25 14:10:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/probeprofiler/probeprofiler.c: fix function name and
-	  return value.
-
-Wed Apr 25 12:42:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h: remove rb_control_frame_t#callee_id.
-
-	* vm_macro.def: ditto.
-
-	* eval_intern.h (exec_event_hooks): fix to check event flags
-
-	* eval_intern.h (EXEC_EVENT_HOOK): fix to re-check event flags.
-
-	* ext/probeprofiler : added.  this profiler is sampling based
-	  profiler.
-
-	* vm.c: add rb_thread_current_status() API for probeprofiler.
-
-	* thread.c (rb_thread_execute_interrupts): add comments.
-
-Wed Apr 25 10:36:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (PUSH_TAG): no argument now.
-
-	* eval.c, eval_error.h, eval_jump.h, eval_load.c, proc.c, thread.c:
-	  ditto.
-
-	* thread.c (alloc_event_hook, rb_thread_remove_event_hook): should
-	  return value.
-
-Tue Apr 24 09:33:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (do_stat, do_lstat, do_opendir): should not warn ENOTDIR.
-	  [ruby-talk:248288]
-
-Mon Apr 23 22:14:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb ($ruby): add extout directory to include path.
-	  [ruby-core:11003]
-
-	* lib/mkmf.rb (libpathflag): not to append RPATHFLAG to current
-	  directory.
-
-	* lib/mkmf.rb (init_mkmf): add current directory to default
-	  library path with highest priority.  [ruby-core:10960]
-
-	* lib/mkmf.rb (LINK_SO): LIBPATH to be placed before DLDFLAGS.
-
-Fri Apr 20 16:05:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBPATHFLAG, RPATHFLAG): no needs to be quoted,
-	  it is done by libpathflag in mkmf.rb.
-
-Fri Apr 20 12:27:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb: fix to override conv proc.
-
-Fri Apr 20 12:21:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): fixed access to out of bound, and inverted
-	  the order of errinfos.
-
-Fri Apr 20 10:33:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h: add prototypes of rb_sourceline() and
-	  rb_sourcefile().
-
-Fri Apr 20 02:37:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): re-send signal.  [ruby-dev:30516]
-
-	* eval_error.h (error_handle): no message when exiting by signal.
-
-	* intern.h (rb_thread_signal_raise, ruby_default_signal): prototypes.
-
-	* signal.c (esignal_init): takes a signal number and an optional
-	  signal name.
-
-	* signal.c (interrupt_init): pass SIGINT always.
-
-	* signal.c (ruby_default_signal): invoke system default signal
-	  handler.
-
-	* signal.c (rb_f_kill): use NUM2PIDT instead of NUM2INT.
-
-	* signal.c (rb_signal_exec, trap): handle SIGTERM.  [ruby-dev:30505]
-
-	* thread.c (rb_thread_signal_raise): now takes signal number instead
-	  of signal name.
-
-	* thread.c (rb_thread_signal_exit): since rb_make_exception() calls
-	  #exception method, rb_class_new_instance() is not needed here.
-
-	* yarvcore.h (struct rb_vm_struct), eval_jump.h (terminate_process):
-	  exit_code is no longer stored in VM.
-
-Thu Apr 19 18:37:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, node.h, thread.c, yarvcore.[ch], eval_intern.h:
-	  support set_trace_func (incomplete.  id and klass
-	  don't be passed).  And support Thread#set_trace_func
-	  which hook only specified thread and Thread#add_trace_func
-	  which add new trace func instead of replace old one.
-	  C level API was modified.  See thread.c (logic) and
-	  yarvcore.h (data structures).
-
-	* vm.c, vm_macro.def: add hook points.
-
-	* compile.c, insns.def: fix "trace" instruction.
-
-	* iseq.c, vm_macro.h: add compile option "trace_instruction".
-
-	* test/ruby/test_settracefunc.rb: hook "c-return" of set_trace_func.
-
-Thu Apr 19 20:57:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (symbol): symbols should be followed by EXPR_ENDARG.
-
-	* parse.y (dsym): ditto.
-
-	* parse.y (parser_yylex): strings should be followed by
-	  EXPR_ENDARG.
-
-	* parse.y (parser_yylex): ditto for numbers.
-
-	* parse.y (parser_yylex): EXPR_ENDARG after ']' and '}'.
-
-Thu Apr 19 17:46:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/optparse.rb: fix to override conv proc.
-
-Wed Apr 18 10:41:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strtod): exponent is radix 10.  [ruby-talk:248272]
-
-Wed Apr 18 02:50:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* yarvcore.c (th_init2): push initial blockptr value for
-	  rb_block_given_p() outside ruby_exec().  [ruby-core:10923]
-
-Wed Apr 18 02:30:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LDFLAGS): prepend -L. instead appending it to
-	  XLDFLAGS.  [ruby-core:10933]
-
-	* configure.in (Makefile): remove $U for automake from MISSING.
-	  [ruby-talk:248171]
-
-Mon Apr 16 22:56:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/pty/expect_sample.rb: avoid symbolic link representation for
-	  expect.  a patch from Kazuhiro NISHIYAMA <zn at mbf.nifty.com>.
-	  [ruby-dev:30714]
-
-Mon Apr 16 22:51:11 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample: replace TRUE, FALSE with true, false respectively.
-	  a patch from Kazuhiro NISHIYAMA <zn at mbf.nifty.com>.
-	  [ruby-dev:30713]
-
-Mon Apr 16 17:08:02 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (make_switch): do not clobber converter if pattern
-	  has no convert method.  reported by sheepman in [ruby-dev:30709].
-
-Mon Apr 16 16:49:32 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_seek): consistent behavior with
-	  IO#seek.  patch by sheepman in [ruby-dev:30710].
-
-Mon Apr 16 16:34:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): should set command_start after block
-	  starting "do"s and braces.  [ruby-core:10916]
-
-Mon Apr 16 10:51:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_each_with_index): each_with_index to forward
-	  arguments to each.  [ruby-core:10921]
-
-Mon Apr 16 10:43:10 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_arg): should allow to specify 24:00.
-	  [ruby-core:10915]
-
-Sun Apr 15 09:12:54 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: added some zone names.
-
-	* lib/date/format.rb (_parse): now interprets doted numerical
-	  dates as a big endian (except dd.mm.yyyy).
-
-Thu Apr 12 17:13:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (mutex_try_lock): check and set owner thread.
-
-	* thread_pthread.ci: fix to show error code in error message.
-
-Thu Apr 12 17:11:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_rescue2): restore cfp ([ruby-dev:30582]).
-
-Thu Apr 12 16:06:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_protect): restore cfp ([ruby-dev:30671]).
-
-Thu Apr 12 16:04:31 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): check node->nd_state == 1, not !0.
-
-Wed Apr 11 16:35:16 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.[ch] (rb_w32_enter_critical, rb_w32_leave_critical): no
-	  need to reject reentrance. removed.
-
-	* rubysig.h (RUBY_CRITICAL): follow above changes.
-
-	* rubysig.h (TRAP_BEG, TRAP_END): no need to save errno.
-
-Tue Apr 10 17:02:17 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_fclose, rb_w32_close): need to save errno
-	  before calling original fclose()/close().
-
-Tue Apr 10 16:14:22 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.ci (w32_wait_events): check whether interrupt_event is
-	  valid handle or not.
-
-	* thread_win32.ci (native_thread_destroy): clear interrupt_event when
-	  close it.
-
-Tue Apr 10 15:53:17 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_pthread.ci (native_thread_create): initialize sleep_cond.
-	  fixed: [ruby-dev:30675]
-
-Mon Apr  9 18:48:57 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (do_select): ubf_select() is not necessary. interrupt is
-	  checked in the loop.
-
-Mon Apr  9 18:27:26 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (do_select): use ubf_select() as UBF on windows.
-
-	* win32/win32.c (do_select): shouldn't call catch_interrupt() here.
-	  fixed: [ruby-dev:30674], reported by wanabe.
-
-Mon Apr  9 09:24:32 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (disconnect): call shutdown for
-	  SSLSocket. Thanks, Technorama Ltd.
-
-Sun Apr  8 13:28:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (defined_expr): test arguments of NODE_CALL and so
-	  on as well as NODE_ATTRASGN.  [ruby-core:10886]
-
-Fri Apr  6 10:56:29 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_pkey_ec.c (ossl_ec_key_get_group): get rid of
-	  warning. we are aware of it.
-
-Fri Apr  6 04:00:24 2007  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_{bn,x509{attr,cert,name,store}}.c:
-	  Add documentation.
-
-Thu Apr  5 17:59:19 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (defined_expr): support for assignment.
-	  [ruby-core:10867]
-
-	* compile.h (ADD_CATCH_ENTRY): removed temporary variable.
-
-Thu Apr  5 15:13:34 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl_session.c (ossl_ssl_session_alloc): should
-	  return value.
-
-Thu Apr  5 14:58:49 2007  Technorama Ltd. <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_pkcs5.c: New module.
-
-	* ext/openssl/ossl_{cipher,digest,pkcs7,pkcs12}.c:
-	  Remove redundant module namespace.
-
-	* ext/openssl/lib/openssl/{cipher,digest}.rb
-	  Add backwards compatible classes for rearranged classes.
-
-	* ext/openssl/ossl_{pkcs7,pkcs12}.c: Add documentation.
-
-Thu Apr  5 00:42:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_notimplement), io.c (pipe_open): removed definite
-	  articles and UNIX manual section from messages.  [ruby-dev:30690]
-
-Wed Apr  4 17:09:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): refined the message of NotImplementedError.
-	  [ruby-dev:30685]
-
-Wed Apr  4 12:29:02 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* error.c (rb_notimplement): should show the name of this func,
-	  not callee.
-
-Wed Apr  4 10:18:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (popen_exec): should not close close-on-exec FDs.
-	  [ruby-dev:30679]
-
-	* io.c (pipe_open): raise NotImplementedError for command "-" on
-	  platforms where fork(2) is not available.  [ruby-dev:30681]
-
-Tue Apr  4 04:17:18 2007  Technorama Ltd. <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_ssl.c: Add documentation.
-
-Tue Apr  3 16:22:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/extconf.rb: check for functions added in 1.9.
-
-	* ext/openssl/ruby_missing.h: check per features instead by
-	  checking version code.  [ruby-core:10845]
-
-Tue Apr  3 16:02:44 2007  Technorama Ltd. <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_bn.c: More documentation.
-
-	* ext/openssl/lib/ossl_{pkey,pkey_ec}.[ch]: Add elliptic curves.
-
-Tue Apr  3 15:50:41 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (s_recv, s_recvfrom): some systems (such as
-	  windows) doesn't set fromlen if the socket is connection-oriented.
-	  reported by Bram Whillock in [ruby-core:10512] [ruby-Bugs#9061]
-
-Tue Apr  3 09:36:55 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ruby_missing.h: need to include version.h to check
-	  RUBY_VERSION_CODE.
-
-Mon Apr  3 07:10:12 2007  Technorama Ltd. <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_{ssl.[ch],ssl_session.c},
-	  ext/openssl/lib/openssl/lib/openssl/ssl.rb:
-	  New SSL::Session class.  Add session cb's, getter/setters,
-	  config, and statistics methods.
-
-Mon Apr  3 04:00:23 2007  Technorama Ltd. <oss-ruby@technorama.net>
-
-	* ext/openssl/{ossl.[ch],ossl_pkey.c} Add documentation.
-
-	* ext/openssl/ossl_hmac.c Add reset method.
-
-	* ext/openssl/ossl_cipher.c (Cipher#update) Take additional
-	  buffer argument.
-
-	* ext/openssl/{ossl_bio.c,ossl_ssl.c,ruby_missing.h}
-	  compatibility with 1.8.
-
-Mon Apr  2 21:55:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (throw), thread.c, yarvcore.h (throwed_errinfo): fixed
-	  typo.
-
-Fri Mar 30 11:46:51 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_cmdvector): fixed buffer size. reported by
-	  wanabe [ruby-dev:30672]
-
-	* win32/win32.c (init_env, insert, rb_w32_get_environ): use strdup
-	  instead of malloc + strlcpy. suggested by nobu [ruby-dev:30673]
-
-Fri Mar 30 02:29:04 2007  Technorama  <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_{bn,cipher,digest,hmac,rand,pkey_{dh,dsa,rsa}}.c:
-	  Add Documentation for various methods.
-
-	* ext/openssl/lib/openssl/cipher.rb: Ditto
-
-	* ext/openssl/ossl_bn.c: add lshift! and rshift! methods.
-
-	* ext/openssl/ossl_digest.c: GetDigestPtr() also accept a string.
-
-Fri Mar 23 11:28:24 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_env, insert, cmdglob, rb_w32_cmdvector,
-	  rb_w32_opendir, rb_w32_readdir, rb_w32_strerror, rb_w32_stati64,
-	  rb_w32_get_environ): use strlcpy() and strlcat().
-
-	* win32/win32.c (rb_w32_opendir): use realloc() instead of xrealloc().
-
-	* win32/win32.c (rb_w32_closedir): check NULL before free pointers.
-
-Fri Mar 23 00:24:52 2007  Keiju Ishitsuka <keiju@ruby-lang.org>
-
-	* lib/shell: commit miss(support for ruby 1.9(YARV) thread model).
-
-Thu Mar 22 13:32:17 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (LIBS): remove an unnecessary library.
-
-Thu Mar 22 10:27:58 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_bignum.rb (test_to_s): add tests for Bignum#to_s.
-
-Wed Mar 21 20:38:06 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* marshal.c (w_short, w_long, w_object): get rid of VC++ warnings.
-
-Wed Mar 21 20:05:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, parse.y, eval.c, intern.h, iseq.c, lex.c, node.h,
-	  proc.c, vm.c, vm_macro.def, vm_macro.def, yarvcore.c, yarvcore.h,
-	  debug.c, debug.h: merge half-baked-1.9 changes.  The biggest change
-	  is to change node structure around NODE_SCOPE, NODE_ARGS.  Every
-	  scope (method/class/block) has own NODE_SCOPE node and NODE_ARGS
-	  represents more details of arguments information.  I'll write a
-	  document about detail of node structure.
-
-Wed Mar 21 17:04:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): round up for the most significant digit.
-	  [ruby-core:10686]
-
-Tue Mar 21 08:20:00 2007  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* test/testunit/collector/test_dir.rb: Fixed test/unit tests that
-	  were breaking due to Module#public_instance_methods now
-	  returning a Symbol instead of a String.
-
-	* test/testunit/collector/test_objectspace.rb: Ditto.
-
-Tue Mar 20 22:54:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_extended): erroneous check condition when dump
-	  method is defined.  [ruby-core:10646]
-
-Tue Mar 20 21:36:47 2007  Keiju Ishitsuka <keiju@ruby-lang.org>
-
-	* lib/shell.rb, lib/shell: support for ruby 1.9(YARV) thread model.
-
-Tue Mar 20 16:36:08 2007  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* distruby.rb: Add zip generation.
-
-Tue Mar 20 16:20:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_callee_name): add __method__ and __callee__ again.
-	  __callee__ need to rework to adopt YARV.  [ruby-core:10671]
-
-Tue Mar 20 11:09:00 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: Revise rdoc.
-
-	* lib/set.rb (Set#freeze, Set#taint, Set#untaint): Implement
-	  Set#freeze, Set#taint, and Set#untaint; requested by: Dan
-	  Hutchings <dan AT moltoagitato.com> in [ruby-bugs:PR#9359].
-
-Tue Mar 20 09:13:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_fork): flush stdouts always before fork(2).
-	  fixed: [ruby-dev:30612]
-
-Tue Mar 20 01:38:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): store the result of first_func
-	  as well as first_proc.
-
-	* thread.c (thread_create_core): block is not used if first_func
-	  is given.
-
-Mon Mar 19 16:58:52 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* missing/{strlcat,strlcpy}.c, missing.h: new functions.
-
-	* LEGAL: add copyright notice about above files.
-
-	* configure.in: check whether strlcat and strlcpy are exist or not.
-
-	* {bcc32,win32,wince}/Makefile.sub: use above files.
-
-Mon Mar 19 14:12:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/matrix.rb (Matrix::inverse_from): adding partial pivoting to
-	  the Gauss-Jordan algorithm, making it stable.  a patch from
-	  Peter Vanbroekhoven.  [ruby-core:10641]
-
-Mon Mar 19 12:13:36 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regparse.c, etc.: K&R to ANSI code cleanup patch from Stefan
-	  Huehner <stefan at huehner.org>.  [ruby-core:10543]
-
-Mon Mar 19 11:27:13 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb (rbuf_read): extend buffer size for speed.
-
-Sun Mar 18 08:31:51 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/dir.h, win32/win32.c (rb_w32_opendir, rb_w32_readdir,
-	  rb_w32_closedir): get rid of possible buffer-overflows.
-
-Sat Mar 17 19:10:39 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss, test/rss:
-	- supported Atom.
-	- bumped version 0.1.6 to 0.1.7.
-	* sample/rss/convert.rb: added new sample.
-
-Fri Mar 16 22:32:20 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: change default verification mode from
-	  VERIFY_PEER to VERIFY_NONE because most POPS server does not have
-	  true certification.
-
-Fri Mar 16 22:19:24 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE#ole_activex_initialize,
-	  a little bit supporting ActiveX control. [ruby-talk:241188]
-
-Fri Mar 16 22:16:58 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: merge Ruby-SSPI patch contributed by Justin
-	  Bailey.
-
-	* ext/Win32API/lib/win32/sspi.rb: new file.
-
-Wed Mar 14 12:30:00 2007  Shigeo Kobayashi  <shigeo@tinyforest.jp>
-
-	* ext/bigdecimal/bigdecimal.c: BigDecimal("-.31") is now
-	  treated as ("-0.31") not as ("0.31").
-
-Tue Mar 13 19:04:30 2007  Keiju Ishitsuka <keiju@ruby-lang.org>
-
-	* lib/sync.rb: support for ruby 1.9(YARV) thread model.
-
-Tue Mar 13 09:25:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clear-installed-list): separated from install-prereq.
-
-Tue Mar 13 07:23:20 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb (mon_try_enter): call @mon_muetx.try_lock.
-	  Thanks, Keiju ISHITSUKA. [ruby-dev:30507]
-
-Tue Mar 13 02:42:58 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/cgi.rb (CGI::header): IIS >= 5.0 does not need the nph
-	  assumption any more; submitted by MIYASAKA Masaru <alkaid AT
-	  coral.ocn.ne.jp> in [ruby-dev:30537].
-
-Mon Mar 12 10:53:28 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_asn1.c (Init_ossl_asn1): Let rdoc know about
-	  externally defined modules; submitted by Technorama
-	  Ltd. <oss-ruby AT technorama.net> in [ruby-bugs:PR#4704].
-
-	* ext/openssl/ossl_bn.c (Init_ossl_bn): Ditto.
-
-	* ext/openssl/ossl_cipher.c (Init_ossl_cipher): Ditto.
-
-	* ext/openssl/ossl_digest.c (Init_ossl_digest): Ditto.
-
-	* ext/openssl/ossl_hmac.c (Init_ossl_hmac): Ditto.
-
-	* ext/openssl/ossl_pkey.c (Init_ossl_pkey): Ditto.
-
-	* ext/openssl/ossl_pkey_dh.c (Init_ossl_dh): Ditto.
-
-	* ext/openssl/ossl_pkey_dsa.c (Init_ossl_dsa): Ditto.
-
-	* ext/openssl/ossl_pkey_rsa.c (Init_ossl_rsa): Ditto.
-
-	* ext/openssl/ossl_rand.c (Init_ossl_rand): Ditto.
-
-	* ext/openssl/ossl_ssl.c (Init_ossl_ssl): Ditto.
-
-Sun Mar 11 18:42:01 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* misc/ruby-mode.el (ruby-block-end-re): Support for the
-	  experimental ';;' terminator had been dropped.
-
-Sun Mar 11 05:45:46 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* misc/README, misc/rdebug.el: Add rdebug.el, Emacs ruby-debug
-	  interface based on rubydb3x.el; submitted by Martin Nordholts
-	  <enselic AT gmail.com> in [ruby-bugs:PR#9023].
-
-Sat Mar 10 07:20:28 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_TYPELIB#library_name,
-	  WIN32OLE_TYPELIB#visible?.
-
-	* test/win32ole/test_win32ole_typelib.rb: ditto.
-
-Thu Mar  8 09:17:59 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* compile.c: iseq_compile -> rb_iseq_compile.
-
-	* iseq.c: ditto.
-
-	* intern.h: provide function prototype of Init_jump.
-
-	* eval_jump.h (Init_jump): declare function type.
-
-	* thread.c: platform-dependent functions should be surrounded by #ifdef.
-
-	* iseq.c (iseq_data_to_ary): remove unused variable.
-
-	* compile.c (set_arguments): ditto.
-
-	* thread.c (set_unblock_function): ditto.
-
-	* thread_pthread.ci: reduce printf warning.
-
-	* vm_dump.c: ditto.
-
-Tue Mar  6 16:35:04 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/shell/process-controller.rb: fix thread synchronization problem for [ruby-dev:30477].
-
-Tue Mar  6 11:53:25 2007  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/irbtkw.rbw: fails to exit process.
-
-Tue Mar  6 10:23:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* runruby.rb: added --pure (turned on by default) and --debugger
-	  options.
-
-Mon Mar  5 09:19:33 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/timeout.rb (Timeout.timeout): should return the block value
-	  always.
-
-	* lib/timeout.rb (Timeout.timeout): should yield sec argument
-	  always.
-
-	* lib/timeout.rb (Timeout.timeout): fix document.
-
-Mon Mar  5 09:16:40 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: support automatic STARTTLS.
-
-	* lib/net/smtp.rb: check server advertisement.
-
-	* lib/net/smtp.rb: introduce new class SMTP::Response.
-
-	* lib/net/smtp.rb (getok): should not use sprintf.
-
-	* lib/net/smtp.rb (get_response): ditto.
-
-	* lib/net/protocol.rb: reduce syntax warning on 1.9.
-
-Mon Mar  5 07:13:28 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: reconstruct SMTPS/STARTTLS interface.  New
-	  interface is incompatible from current 1.9 interface at all.
-
-	* lib/net/smtp.rb: All SSL-related class methods are removed; use
-	  instance methods instead.
-
-	* lib/net/smtp.rb: rename methods: *ssl -> *tls (with alias
-	  "ssl").
-
-	* lib/net/smtp.rb: rename methods: *tls -> *starttls.
-
-Mon Mar  5 01:36:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex), win32/win32.c (rb_w32_utime): fixed
-	  indentation broken at YARV merger.
-
-Sun Mar  4 23:41:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_stat_uid, rb_stat_gid, eaccess): use rb_uid_t and
-	  rb_gid_t instead of int.
-
-	* file.c (rb_stat_s_utime): fixed a commit miss for the platforms
-	  where utimes() does not exist.
-
-	* lib/fileutils.rb (touch): ditto.
-
-Sun Mar  4 14:46:56 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* util.c (push_element): should return a int value.
-
-Sun Mar  4 01:01:25 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#^, Set#&): Correct documentation.  Those methods
-	  return sets, not arrays; noted by Oliver Frank Wittich <nietz AT
-	  mangabrain.de>.
-
-Sat Mar  3 22:54:33 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (touch): last #touch change causes error when
-	  :mtime option was not given.
-
-Sat Mar  3 22:51:29 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mv): could not move directory between
-	  different file systems. [ruby-dev:30411]
-
-Sat Mar  3 22:37:02 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_utime): allow nil to set the current time.
-
-	* lib/fileutils.rb (touch): ditto, and added :mtime and :nocreate
-	  options.  fixed: [ruby-talk:219037]
-
-Sat Mar  3 15:52:26 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* object.c (instance_variable_get): Restore rdoc markups lost in
-	  the last commit.
-
-Fri Mar  2 21:17:14 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (get_ptr_of_variant, ole_set_safe_array,
-	  ole_val2ptr_variant, ole_val2olevariantdata, ole_variant2val,
-	  ): fix some bugs of WIN32OLE_VARIANT.new when variant type is
-	  VT_ARRAY|VT_BSTR or VT_BYREF.
-
-	* ext/win32ole/win32ole.c (folevariant_s_array, folevariant_initialize):
-	  WIN32OLE_VARIANT#[], WIN32OLE_VARIANT#[]=, WIN32OLE_VARIANT#value=
-	  is defined as instance method of WIN32OLE_VARIANT.
-
-	* test/win32ole/test_win32ole_variant.rb: add some test for
-	  VT_ARRAY, VT_BYREF variant type.
-
-Fri Mar  2 07:58:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_ivar_set): RDoc updated according to a
-	  suggestion from Brian Candler <B.Candler AT pobox.com>.
-	  [ruby-core:10469]
-
-Thu Mar  1 21:38:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt, arg): should not omit lhs of OP_ASGN1 even if
-	  empty.  [ruby-dev:30455]
-
-Thu Mar  1 02:55:25 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (get_digest_base_metadata): Allow inheriting
-	  Digest::Base subclasses, which was unintentionally made
-	  impossible while restructuring Digest classes.
-
-Thu Mar  1 02:05:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb (patchlevel): read from version.h.
-
-Wed Feb 28 21:15:00 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (ac_cv_func_fcntl): fcntl support for MinGW.
-
-	* missing/flock.c: workaround for MinGW.
-
-Wed Feb 28 20:51:32 2007  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* pack.c (pack_unpack): properly ignore non-base64 octets such as
-	  UTF-8 encoded BOMs; submitted by SOUMA Yutaka <holon@radastery.jp>
-	  to fix [ruby-core:10437]
-
-Wed Feb 28 18:31:51 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/extconf.rb: no need to check unistd.h and sys/time.h.
-	  they are already checked at configure.
-	  reported by KOBAYASHI Yasuhiro [ruby-list:43225]
-
-Wed Feb 28 18:23:43 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb ($DEFLIBPATH): default library paths ($(topdir), etc)
-	  should be the first elements of library paths list.
-	  reported by KOBAYASHI Yasuhiro [ruby-list:43225]
-
-Wed Feb 28 10:33:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in, */Makefile.sub (THREAD_MODEL): system
-	  specific thread model.
-
-	* compile.h, regint.h, vm.h, array.c: removed unnecessary #include.
-
-Wed Feb 28 04:03:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (take_i): small cosmetic / documentation patch from
-	  Tadashi Saito <shiba AT mail2.accsnet.ne.jp>. [ruby-dev:30446]
-
-Wed Feb 28 01:20:18 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/{dbm,gdbm}/test_{dbm,gdbm}.rb: shouldn't use host_os. use
-	  target_os instead. reported by KOBAYASHI Yasuhiro [ruby-list:43225]
-
-Wed Feb 28 00:08:11 2007  URABE Shyouhei  <shyouhei@ice.uec.ac.jp>
-
-	* mkconfig.rb (RbConfig): add CONFIG['PATCHLEVEL']
-
-	* common.mk: new target dist
-
-	* distruby.rb: new file
-
-Tue Feb 27 22:18:45 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (--enable-auto-image-base): avoid the necessity to
-	  rebase the shared libs as much as possible;
-	  submitted by Corinna Vinschen <spam at vinschen.de> in
-	  [ruby-talk:240964].
-
-Tue Feb 27 21:36:47 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* util.c (__crt0_glob_function): use ruby_glob() instead of rb_globi().
-
-Tue Feb 27 21:33:04 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (ac_cv_func_setrlimit): workaround for djgpp.
-
-Tue Feb 27 20:35:28 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (error.c, process.c): depend on yarvcore.h and rubysig.h.
-
-Tue Feb 27 19:26:31 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/nkf/nkf.c (rb_str_resize, rb_nkf_kconv, rb_nkf_guess1,
-	  rb_nkf_guess2): Silence warnings regarding char * vs. unsigned
-	  char * mismatch; submitted by Lyle Johnson
-	  <lyle.johnson@gmail.com> in [ruby-core:10416].
-
-Tue Feb 27 19:15:01 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/base64.rb (Base64::b64encode): Fix documentation; submitted
-	  by David Symonds <dsymonds@gmail.com> in [ruby-core:10432].
-
-Tue Feb 27 18:59:42 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_load): Silence warnings
-	  regarding char * vs. unsigned char * mismatch; submitted by Lyle
-	  Johnson <lyle.johnson@gmail.com> in [ruby-core:10416].
-
-	* ext/digest/sha1/sha1ossl.c (SHA1_Finish): Ditto.
-
-	* ext/digest/rmd160/rmd160ossl.c (RMD160_Finish): Ditto.
-
-	* ext/digest/digest.c (rb_digest_base_finish,
-	  rb_digest_base_update): Ditto.
-
-Tue Feb 27 18:12:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_take): new method.  [ruby-dev:30407]
-
-	* enum.c (enum_drop): ditto.
-
-Tue Feb 27 07:47:24 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h, vm.h: rename th_invoke_yield() to th_yield().
-
-	* blockinlining.c: ditto.
-
-	* eval.c: ditto.
-
-	* vm.c, insns.def: rename th_invoke_yield_cfunc()
-	  to th_yield_with_cfunc().
-
-	* yarvcore.h, yarvcore.c: rename theYarvVM to ruby_current_vm and
-	  yarvCurrentThread to ruby_current_thread.  remove yarvVMArray.
-
-Tue Feb 27 00:45:23 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_optimization.rb: restore method before calling
-	  assert_equal.
-
-Mon Feb 26 00:58:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h: add rb_thread_t#top_wrapper, top_self.
-
-	* eval_load.c (rb_load): support eval in wrapper module
-	  (load(file, true)).
-
-	* eval.c: ditto.
-
-	* eval_jump.h: ditto.
-
-	* iseq.c: ditto.
-
-	* vm.c: ditto.
-
-	* yarvcore.c: ditto.
-
-	* insns.def: add a empty line.
-
-Mon Feb 26 00:54:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: change "gdb" rule.  You can debug miniruby with
-	  $(srcdir)/test.rb on gdb by this rule (type "make gdb").
-	  If you write break points to "breakpoints.gdb" on $srcdir,
-	  gdb runs with this file.
-
-Sun Feb 25 11:46:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* win32/Makefile.sub: enable -Zi (debug) option.
-
-Sun Feb 25 11:38:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.h: define RUBY_VM macro and remove NATIVETHREAD* macros.
-
-	* intern.h: ditto.
-
-	* signal.c (posix_signal): remove unused function
-	  posix_nativethread_signal().
-
-Sun Feb 25 11:31:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_run): fix to ANSI style.
-
-Sun Feb 25 11:09:16 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* bootstraptest/runner.rb: show source code in error message.
-
-Sun Feb 25 09:39:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h:
-	  rename:
-	    rb_iseq_t#file_name -> filename
-	    rb_iseq_t#local_tbl -> local_table
-	  add:
-	    rb_iseq_t#local_table_size
-
-	* compile.c: separate local_table_size and local_size
-	  (local variable size)
-
-	* blockinlining.c: apply above rename.
-
-	* compile.h: ditto.
-
-	* eval.c: ditto.
-
-	* iseq.c: ditto.
-
-	* proc.c: ditto.
-
-	* vm.c: ditto.
-
-	* vm_dump.c: ditto.
-
-Sun Feb 25 10:27:17 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* bootstraptest/runner.rb: add lib/ to load path.
-
-Sat Feb 25 10:16:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* rubyio.h (HAVE_RB_IO_T): macro to tell if rb_io_t is defined.
-
-Sat Feb 24 19:39:16 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* common.mk: new target "btest", to run bootstraptests.
-
-Sat Feb 24 19:30:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c, gc.c, io.c, ruby.h, rubyio.h, win32/win32.h (rb_io_t):
-	  renamed from OpenFile.
-
-	* ext/dl/cptr.c, ext/io/wait/wait.c, ext/openssl/ossl.h,
-	  ext/openssl/ossl_bio.c, ext/openssl/ossl_ssl.c, ext/pty/pty.c,
-	  ext/readline/readline.c, ext/socket/socket.c: ditto.
-
-Sat Feb 24 19:28:23 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* bootstraptest/runner.rb: new option -v,--verbose.
-
-Sat Feb 24 18:55:50 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* yarvtest/test_method.rb: removed (merged to bootstraptest).
-
-	* yarvtest/test_class.rb: ditto.
-
-Sat Feb 24 18:44:39 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* bootstraptest/test_class.rb: new file.
-
-	* bootstraptest/test_method.rb: add tests.
-
-Sat Feb 24 18:44:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h (rb_thread_blocking_region): add prototype.
-
-	* file.c (rb_thread_flock, rb_file_flock): use UBF feature.
-
-	* process.c (rb_waitpid_blocking, rb_waitpid): use UBF feature.
-
-	* thread.c (rb_thread_debug): added runtime debugging flag.
-
-	* thread.c (BLOCKING_REGION): restore previous UBF.
-
-	* thread.c (rb_thread_blocking_region): default UBF to interrupt
-	  in system dependent way by RB_UBF_DFL.
-	  + ubf_select() on posix system
-	  + ubf_handle() on Win32
-	  + none on cygwin
-
-	* thread_win32.ci (rb_w32_wait_events_blocking): blocking version.
-
-	* win32/win32.c (waitpid): use rb_w32_wait_events_blocking().
-
-Sat Feb 24 17:45:48 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (f_arg, opt_f_block_arg): ripper should export VALUE.
-
-Sat Feb 24 16:52:55 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* bootstraptest/runner.rb: fix syntax error.
-
-Sat Feb 24 16:51:09 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* bootstraptest/runner.rb: new option --help.
-
-Sat Feb 24 16:47:33 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* bootstraptest: new test suite.
-
-	* bootstraptest/runner.rb: new file.
-
-	* bootstraptest/test_literal.rb: new file.
-
-	* bootstraptest/test_method.rb: new file.
-
-Sat Feb 24 16:29:15 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (StartSocket): remove unnecessary code.
-
-Sat Feb 24 16:04:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (struct local_vars): remove unused nofree member from
-	  struct.
-
-	* parse.y (parser_free): ditto.
-
-Sat Feb 24 15:57:19 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/thread.rb (ConditionVariable#broadcast): use Mutex
-	  instead of Thread.exclusive.
-
-	* lib/monitor.rb (MonitorMixin#mon_exit): unset @mon_owner
-	  before calling Mutex#unlock.
-
-Sat Feb 24 15:51:45 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (program): remove useless assignment to reduce warning.
-
-Sat Feb 24 15:41:51 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (lambda): remove unused clause from the rule to stop
-	  warning.
-
-Sat Feb 24 15:41:22 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/thread.rb: do not redefine Mutex#synchronize.
-
-Sat Feb 24 15:14:02 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb: rewritten using Mutex/ConditionVariable.
-
-Sat Feb 24 13:25:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/soap/mapping/factory.rb: catch up with spec changes (return
-	  Symbols instead of Strings).
-
-	* lib/soap/mapping/mapping.rb: ditto.
-
-Sat Feb 24 10:49:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y, node.h, compile.c: change node tree structure.  a purpose
-	  of this change is to unify argument structure of method and block.
-	  this change prohibits duplicate block parameter name.
-	  new argument information:
-	    NODE_ARGS	  [m: int, o: NODE_OPT_ARG, ->]
-	    NODE_ARGS_AUX [r: ID, b: ID, ->]
-	    NODE_ARGS_AUX [Pst: id, Plen: int, init: NODE*]
-	  optarg information:
-	    NODE_OPT_ARGS [idx, expr, ->]
-
-	* vm_macro.def: ditto.
-
-	* gc.c: ditto.
-
-	* iseq.c: ditto.
-
-	* compile.h: fix debug function name.
-
-	* test/ripper/test_scanner_events.rb: |_,_,foo| -> |_1,_2,foo|
-
-	* test/ruby/test_lambda.rb: disable test temporarily.
-
-Sat Feb 24 10:46:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/testunit/test_testcase.rb: catch up with current instance
-	  variable spec.
-
-Sat Feb 24 10:32:59 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: change vm_macro.def rule.
-
-Sat Feb 24 10:38:05 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/racc/cparse/cparse.c (cparse_params_mark): remove useless
-	  rb_gc_mark.  Thanks Tomoyuki Chikanaga. [ruby-dev:30405]
-
-Sat Feb 24 07:31:35 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_VARIANT.array,
-	  WIN32OLE_VARIANT#value=, refactoring.
-
-	* test/win32ole/test_win32ole_variant.rb: add some test for
-	  WIN32OLE_VARIANT.array, WIN32OLE_VARIANT#value=.
-
-Fri Feb 23 18:37:55 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_yield.rb: new test.
-
-	* yarvtest/test_yield.rb: removed (moved to test_yield.rb).
-
-Fri Feb 23 18:27:17 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (rb_thread_polling): check interrupts here.
-
-	* thread_win32.ci (w32_wait_events): rename from w32_wait_event(), and
-	  now receive multiple event handles.
-
-	* win32/win32.c (wait_events, rb_w32_main_context): removed.
-
-	* thread_win32.ci (rb_w32_wait_events): new function.
-
-	* thread_win32.ci, win32/win32.c (rb_w32_sleep, rb_w32_Sleep): move
-	  from win32/win32.c to thread_win32.ci, and use w32_wait_events().
-
-Fri Feb 23 18:13:22 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_optimization.rb: new test (merges test_opts.rb).
-
-	* yarvtest/test_opts.rb: removed.
-
-Fri Feb 23 16:59:39 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_assignment.rb: merge yarvtest/test_massign.
-
-	* yarvtest/test_massign.rb: removed (merged to
-	  test_assignment.rb).
-
-Fri Feb 23 15:58:20 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* signal.c (sighandler): need to re-install sighandler on some
-	  platforms.
-
-Fri Feb 23 15:05:57 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (set_pioinfo_extra): simplified.
-
-Fri Feb 23 14:23:20 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_literal.rb: new test.
-
-Fri Feb 23 12:40:12 2007  James Edward Gray II  <james@grayproductions.net>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client::do_rpc): Make the
-	  Content-Length parameter optional for responses in
-	  xmlrpc/client.rb; suggested by Daniel Berger
-	  <Daniel.Berger@qwest.com> and approved by the maintainer.
-
-	* lib/xmlrpc/create.rb (XMLRPC::Create::conv2value): Add DateTime
-	  support to xmlrpc; approved by the maintainer.
-
-Fri Feb 23 12:24:46 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (lambda): add ripper event.  This fixes bus error on
-	  "make test-all".
-
-	* ext/ripper/extconf.rb: do not stop build.
-
-Fri Feb 23 12:16:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: remove dyna_check_gen() prototype.
-
-Fri Feb 23 11:41:21 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y, compile.c, gc.c, insns.def, intern.h, iseq.c, node.h,
-	  object.c, string.c, variable.c, vm_macro.def: revert private
-	  instance variable feature, which is postponed until next major
-	  release.
-
-	* marshal.c: TYPE_SYMBOL2 removed; MARSHAL_MINOR reverted back to
-	  8th version.
-
-Fri Feb 23 10:53:21 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* thread_pthread.ci (native_mutex_lock): do not call
-	  pthread_mutex_trylock().
-
-Fri Feb 23 10:31:16 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* dln.c: use dlopen on Mac OS X 10.3 or later.
-
-Fri Feb 23 10:03:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_ord): need not to check string length;  ord
-	  returns a codepoint for the first character in the string.
-
-Wed Feb 21 22:29:45 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* numeric.c (fix_equal): A bit more optimization.
-
-Wed Feb 21 17:40:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_equal): remove FIX2LONG() to optimize.  suggested
-	  in http://t-a-w.blogspot.com/2007/02/making-ruby-faster.html.
-	  [ruby-talk:240223]
-
-	* numeric.c (fix_cmp): ditto.
-
-Wed Feb 21 09:14:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_load.c (rb_require_safe): should restore safe level.
-
-Tue Feb 20 21:19:29 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (installed_code_page_proc,
-	  ole_variant2val): small refactoring.
-
-Tue Feb 20 15:11:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm.c, yarvcore.h: move definition of rb_call_super() to
-	  vm.c from eval.c.  change th_call_super() to static function.
-
-Tue Feb 20 15:08:25 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/io/nonblock/test_flush.rb: YARV doesn't raise any errors if
-	  another thread close IO object which current thread is blocking with.
-
-Tue Feb 20 15:03:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (do_select, rb_thread_wait_fd_rw): raise sys error if
-	  errno is not 0 and EBADF.
-
-Mon Feb 19 22:15:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_REPLACE_TYPE): cache convertible type info.
-
-	* intern.h (rb_detach_process): use rb_pid_t instead of pid_t.
-
-	* ruby.h (PIDT2NUM, NUM2PIDT, UIDT2NUM, NUM2UIDT, GIDT2NUM, NUM2GIDT):
-	  defaulted to conversion using long.
-
-Mon Feb 19 17:14:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (unix_peeraddr): wrong syscall name in error
-	  message for #peeraddr. a patch from Sam Roberts
-	  <sroberts at uniserve.com>.  [ruby-core:10366]
-
-Sun Feb 18 22:56:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getgrgid): missed to replace a macro.
-
-Sun Feb 18 19:33:00 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: updated based on date2 4.0.3.
-
-Sun Feb 18 13:11:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (pid_t, uid_t, gid_t): check if defined.
-
-	* intern.h, process.c, rubyio.h, ext/etc/etc.c, ext/pty/pty.c: use
-	  rb_{pid,uid,gid}_t instead of plain int.  [ruby-dev:30376]
-
-	* ext/etc/extconf.rb (PIDT2NUM, NUM2PIDT, UIDT2NUM, NUM2UIDT, GIDT2NUM,
-	  NUM2GIDT): moved to configure.in.
-
-Fri Feb 16 21:34:33 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* object.c (rb_obj_ivar_set/get/defined): fix to check :@_v/C id.
-
-	* test/testunit/test_testcase.rb: fix to use instance_variable_get()
-	  to access @_result.
-
-Fri Feb 16 20:59:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* intern.h: add a prototype of rb_sym_to_s().
-
-Fri Feb 16 19:24:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (math_log): update document to mention second optional
-	  argument for logarithm base.
-
-Fri Feb 16 19:19:21 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (mrhs): need to append by arg_append().
-	  [ruby-talk:239385]
-
-Fri Feb 16 11:18:21 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/.document: Apply patch for irb, e2mmap and README by Hugh Sasse
-	  <hgs at dmu.ac.uk> from [ruby-core:10135]
-
-	* lib/prettyprint.rb: Suppress RDoc for PrettyPrint test suite.
-
-Thu Feb 15 20:48:36 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (set_pioinfo_extra): new function for VC++8 SP1
-	  workaround. [ruby-core:10259]
-
-	* win32/win32.c (NtInitialize): call above function.
-
-Thu Feb 15 16:25:54 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/uri/generic.rb (URI::Generic::userinfo): Considering how
-	  `scheme://user:@...', `scheme://:password@...' and
-	  `scheme://:@...' are parsed, an empty user name or password
-	  should be allowed and represented as it is.
-
-Thu Feb 15 01:52:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.(c|h), yarvcore.(c|h) (yarvGlobalStateVersion): rename to
-	  ruby_vm_global_state_version.
-
-Thu Feb 15 01:50:26 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/fileutils/test_fileutils.rb (check_singleton): fix to use
-	  symbol instead of string.
-
-	* test/io/nonblock/test_flush.rb: enable tests.
-
-	* test/xmlrpc/test_webrick_server.rb: ditto.
-
-Thu Feb 15 01:43:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/delegate.rb: catch up with class local variable (@_v) spec.
-
-	* lib/singleton.rb: ditto.
-
-Wed Feb 14 22:52:43 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_variant2val): VC++6 does not
-	  support VT_I8, VT_UI8.
-
-Wed Feb 14 22:10:21 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* configure.in: change stack limit to 2MB from 32MB.
-
-	* win32/Makefile.sub: ditto.
-
-Wed Feb 14 21:39:36 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest.rb (Digest::self.const_missing): Drop
-	  autoloads for sha2 classes in favor of handling in
-	  const_missing(), to work around a problem exposed on OS X.
-
-Wed Feb 14 21:19:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.ci (native_thread_create): adjust 4KB (page size)
-	  alignment.
-
-Wed Feb 14 21:12:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.ci (CHECK_ERR): call rb_bug()
-	  instead of printf() and exit().
-
-Wed Feb 14 16:48:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/date/format.rb (Date::Format::Bag::method_missing): need not
-	  to use instance variables corresponding each method; use Hash
-	  instead.
-
-Wed Feb 14 13:12:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (reg_operand): allow symbols to be operands for regular
-	  expression matches.
-
-	* string.c (Init_String): allow Symbol#===.
-
-	* lib/date/format.rb (Date::Format::Bag::to_hash): string
-	  added prefixes.
-
-Wed Feb 14 12:58:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (do_select): fix to iterate select().
-	  on cygwin/mswin32, iterate in unblocking region.
-
-	* thread.c (rb_thread_select): don't iterate on this function.
-	  (iterate in do_select).
-
-Wed Feb 14 11:39:18 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (set_unblock_function): fix function interface.
-
-Wed Feb 14 11:12:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_load.c, yarvcore.h: use rb_vm_t#loaded_features instead of
-	  rb_features (global variable).
-
-	* yarvcore.c: mark rb_vm_t#loaded_features.
-
-Wed Feb 14 08:46:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): no longer distinguish ordinary local
-	  variables and in-block local variables in defined? value.
-
-Wed Feb 14 03:14:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic::userinfo): should support
-	  empty password.  [ruby-core:10290]
-
-	* lib/uri/generic.rb (URI::Generic::set_password): password can be
-	  cleared by nil.  [ruby-core:10290]
-
-Wed Feb 14 03:10:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (struct local_vars): no need to warn out-of-scope
-	  variables; remove dnames member from struct.
-
-Wed Feb 14 03:04:10 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: RVarmap no longer used as yytype; removed.
-
-	* parse.y (dyna_push_gen): no longer need return value.
-
-	* parse.y (dyna_pop_gen): no longer need argument.
-
-	* parse.y (local_push_gen): initialize nofree.
-
-Wed Feb 14 00:30:07 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (init_unixsock): path may contain NUL for
-	  abstract unix sockets.  [ruby-core:10288]
-
-Tue Feb 13 02:21:12 2007  Sam Roberts  <sroberts@uniserve.com>
-
-	* io.c (rb_f_syscall): Fix buffer overflow with syscall
-	  arguments.  [ruby-bugs:PR#8541]
-
-Mon Feb 12 13:57:30 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_variant2val): support VT_I8, VT_UI8.
-
-Mon Feb 12 11:48:52 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/dublincore.rb, lib/rss/maker/dublincore.rb: dc_rightses
-	  -> dc_rights_list. dc_rightses still exists for backward
-	  compatibility. [ruby-core:8350]
-
-	* test/rss/test_maker_dc.rb: added tests for dc_rights_list.
-
-Sun Feb 11 22:40:17 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_ptrtype2val): ole_type, ole_type_detail
-	  should not return "VARIANT,VARIANT".
-
-Sun Feb 11 22:11:05 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/xml-stylesheet.rb (RSS::XMLStyleSheet#initialize):
-	  kept backward compatibility.
-
-Sun Feb 11 22:10:08 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb (RSS::ListenerMixin#start_else_element): used
-	  const_defined? instead of constants.include?.
-
-Sun Feb 11 18:47:14 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_val2olevariantdata):
-	  WIN32OLE_VARIANT#new accepts nil when variant type is VT_ARRAY.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-	* ext/win32ole/win32ole.c: small refactoring.
-
-Sun Feb 11 07:42:25 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::read_multipart): Properly parse
-	  a quoted-string in a Content-Disposition value.
-
-Sat Feb 10 20:21:29 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE#ole_query_interface.
-	  thanks to Mikael Pahmp.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sat Feb 10 17:46:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: targets which depend on yarvcore.h now depend on
-	  rubysig.h too.
-
-	* yarvcore.h (rb_vm_t): use rb_atomic_t instead of int.
-
-Sat Feb 10 00:13:11 2007  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fix typo (TkConfigMethod::__confinfo_cmd,
-	  __conv_keyonly_opts).
-
-Fri Feb  9 12:33:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_win32.ci (w32_show_error_message): renamed to w32_error.
-	  this function do rb_bug().
-
-	* thread_win32.ci (w32_set_event, w32_reset_event, w32_close_handle,
-	  w32_resume_thread): added. fix to use these functions instead calling
-	  win32api directly.
-
-	* thread_win32.ci (w32_create_thread): create suspend thread
-	  (caller must call w32_resume_thread()).
-
-Fri Feb  9 11:03:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_readpartial.rb: tests are working on mswin32/cygwin.
-
-Fri Feb  9 05:08:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c, thread_pthread.ci, thread_win32.ci (thread_start_func_1):
-	  move cleanup function to thread_start_func_2().
-
-	* thread.c, thread_pthread.ci, thread_win32.ci:
-	  add more destruct functions.
-	  (native_thread_destroy() and native_mutex_destroy())
-
-	* thread_pthread.ci, thread_pthread.h: make native_mutex_* functions
-	  (check error, etc), it's not macro any more.
-
-	* thread_win32.ci (thread_start_func_1): store some values before
-	  running thread (to release these after running thread).
-
-	* thread_win32.ci (native_thread_create): fix spaces.
-
-Thu Feb  8 22:44:04 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_set_safe_array, ole_variant2val,
-	  ole_val_ary2variant_ary): fix WIN32OLE_VARIANT.new bug when
-	  1st argument is empty array, and when 2nd argument is
-	  VT_ARRAY|VT_BYREF.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-Thu Feb  8 22:39:09 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvtest/yarvtest.rb: check target command names.
-
-Thu Feb  8 22:31:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_clone.rb: fix to current spec
-	  (Module should not be occur many times in ancestors).
-
-Thu Feb  8 22:26:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_string.rb: ("foo" == :foo) and ("foo" === :foo)
-	  should be false.
-
-	* ChangeLog: fix last messages.
-
-Thu Feb  8 22:24:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_module.rb: fix to use Symbol instead of String.
-
-	* test/ruby/test_module.rb: remove space before argument parentheses.
-
-Thu Feb  8 22:02:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/marshaltestlib.rb: eval(sym) -> eval(sym.to_s)
-
-Thu Feb  8 21:35:16 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_propertyputref.rb (setup): fix typo.
-
-	* test/win32ole/test_win32ole_event.rb: should not use
-	  InternetExplorer.gohome to test.
-
-Thu Feb  8 21:02:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (GVL_UNLOCK_RANGE): rename to BLOCKING_REGION().
-
-	* thread.c (rb_thread_run_parallel): rename to
-	  rb_thread_blocking_region().
-
-Thu Feb  8 15:48:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvcore.h, thread.c: fix to use pthread on cygwin.
-
-	* yarvcore.h, thread.c: move GVL_UNLOCK_BEGIN() and GVL_UNLOCK_END()
-	  from yarvcore.h to thread.c.
-
-	* thread.c: change GVL_UNLOCK_RANGE() arguments
-	  (adding ubf as 2nd argument).
-
-	* thread.c: fix to use polling in select on cygwin and mswin32.
-
-	* thread.c, thread_pthread.ci, thread_win32.ci, yarvcore.h:
-	  rename:
-	  * rb_thread_t#interrupt_function -> unblock_function
-	  * rb_interrupt_function_t -> rb_unblock_function
-	  * some interrupt function name -> ubf_*
-	  * yarv_* -> *
-
-Thu Feb  8 16:08:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: fix to use RUNRUBY instead of BASERUBY if possible.
-
-	* common.mk ($(INSNS) rule): remove $(PROGRAM) first.
-
-Thu Feb  8 15:43:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* process.c: fix to use rb_status_line_set/get/clear().
-
-	* eval_intern.h: fix line break.
-
-Thu Feb  8 15:00:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* blockinlining.c, error.c, eval.c, eval_error.h, eval_intern.h,
-	  eval_jump.h, eval_load.c, eval_safe.h, gc.c, proc.c, signal.c,
-	  thread.c, thread_pthread.ci, thread_win32.ci, vm.c, vm.h,
-	  vm_dump.c, vm_evalbody.ci, yarvcore.c, yarvcore.h:
-	  fix typo (rb_thead_t -> rb_thread_t).
-
-	* eval_intern.h: remove unused definitions.
-
-	* common.mk: fix around vm_opts.h path
-	  and remove harmful argument passed to insns2vm.rb.
-
-Thu Feb  8 03:11:47 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::unescapeHTML): invalid decoding for single
-	  unescaped ampersand.  a patch from Tietew
-	  <tietew+ruby-dev at tietew.net> in [ruby-dev:30292].
-	  fixed: [ruby-dev:30289]
-
-Wed Feb  7 23:25:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (specific_eval): suppress warning.
-
-	* thread_win32.h: undefine _WIN32 on cygwin.  [ruby-dev:30303]
-
-Wed Feb  7 22:41:34 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h: remove UNSUPPORTED() macro.
-
-	* thread.c: fix to define Continuation methods
-	  (they only do rb_notimplement()).
-
-Wed Feb  7 22:33:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h, yarvcore.h: remove unused macro definition.
-
-Wed Feb  7 22:30:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c: fixed to use ANSI function style.
-
-Wed Feb  7 09:35:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* this commit is a result of refactoring. only renaming functions,
-	  moving definitions place, add/remove prototypes, deleting
-	  unused variables and removing yarv.h.
-	  This commit doesn't change any behavior of ruby/vm.
-
-	* yarv.h, common.mk: remove yarv.h (contents are moved to yarvcore.h).
-
-	* error.c, eval_intern.h: include yarvcore.h instead yarv.h
-
-	* rename some functions:
-	  * debug.[ch]: debug_*() -> ruby_debug_*()
-	  * iseq.c: iseq_*() -> rb_iseq_*(), ruby_iseq_disasm()
-	  * iseq.c: node_name() -> ruby_node_name()
-	  * vm.c: yarv_check_redefinition_opt_method() ->
-	          rb_vm_check_redefinition_opt_method()
-
-	* some refactoring with checking -Wall.
-
-	* array.c: remove rb_ary_ptr() (unused) and remove unused
-	  local variables.
-
-	* object.c: add a prototype of rb_mod_module_exec().
-
-	* eval_intern.h (ruby_cref): set it inline.
-
-	* eval_load.c (rb_load), yarvcore.c: yarv_load() -> rb_load_internal().
-
-	* parse.y: add a prototype of rb_parse_in_eval() (in eval.c).
-
-	* process.c: add a prototype of rb_thread_stop_timer_thread() (in thread.c).
-
-	* thread.c: remove raw_gets() function (unused) and fix some format
-	  mismatch (format mismatches have remained yet. this is todo).
-
-	* thread.c (rb_thread_wait_fd_rw): fix typo on label name.
-
-	* thread_pthread.ci: comment out codes with USE_THREAD_CACHE.
-
-	* vm.c (rb_svar, rb_backref_get, rb_backref_get,
-	  rb_lastline_get, rb_lastline_set) : moved from yarvcore.c.
-
-	* vm.c (yarv_init_redefined_flag): add a prototype and rename
-	  yarv_opt_method_table to vm_opt_method_table.
-
-	* vm.c (rb_thread_eval): moved from yarvcore.c.
-
-	* yarvcore.c: remove unused global variables and fix to use nsdr().
-
-Wed Feb  7 03:39:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* blockinlining.c, compile.c, compile.h, error.c, eval.c,
-	  eval_intern.h, eval_jump.h, eval_load.c, eval_method.h,
-	  eval_safe.h, gc.c, insnhelper.h, insns.def, iseq.c, proc.c,
-	  process.c, signal.c, thread.c, thread_pthread.ci, thread_win32.ci,
-	  vm.c, vm.h, vm_dump.c, vm_evalbody.ci, vm_macro.def,
-	  yarv.h, yarvcore.h, yarvcore.c: change type and macro names:
-	  * yarv_*_t -> rb_*_t
-	  * yarv_*_struct -> rb_*_struct
-	  * yarv_tag -> rb_vm_tag
-	  * YARV_* -> RUBY_VM_*
-
-	* proc.c, vm.c: move functions about env object creation
-	  from proc.c to vm.c.
-
-	* proc.c, yarvcore.c: fix rb_cVM initialization place.
-
-	* inits.c: change Init_ISeq() order (after Init_VM).
-
-	* ruby.h, proc.c: change declaration place of rb_cEnv
-	  from proc.c to ruby.c.
-
-Tue Feb  6 22:06:45 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/{nkf.c,utf8tbl.c}:
-	  imported nkf 2007-01-28.
-	  * Fixed: can't decode MIME encode JIS string.
-	  * Fixed: Fullwidth-halfwidth conversion.
-	  * Support DoCoMo's and Softbank's EMOJI
-	  * Support CP932, CP5022x, eucJP-ms UDC
-	  * Support UTF-32 encoding
-	  * Support beyond BMP
-	  [ruby-dev:29700] [ruby-dev:29922] [ruby-dev:30144]
-
-Tue Feb  6 20:36:19 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, lib/rss/parser.rb: followed current Ruby
-	  specification. [ruby-dev:30274]
-
-Tue Feb  6 20:29:44 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, lib/rss/parser.rb: removed needless code for
-	  backward compatibility.
-
-Tue Feb  6 18:43:17 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb: moved fixes for EPIPE to the correct
-	  place. [ruby-core:10204]
-
-Tue Feb  6 16:38:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_opts.h: set properties:
-	  svn:keywords:  Author Date Id Revision
-	  svn:eol-style: native
-
-Tue Feb  6 15:55:46 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (ivar_i): need to support class local instance
-	  variables.
-
-Tue Feb  6 15:44:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix setting is_local flag.
-
-	* yarvtest/test_class.rb: add a test for class local instance variable.
-
-Tue Feb  6 14:15:34 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insns.def: remove (get|set)instancevariable2 and add a
-	  operand is_local to (get|set)instancevariable.
-
-	* yarvtest/test_class.rb: add a test for class local instance variable.
-
-	* parse.y (rb_decompose_ivar2): remove unused variable oid.
-
-	* tool/insns2vm.rb: remove needless require.
-
-Tue Feb  6 11:18:41 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb: check the control connection on EPIPE.
-	  Thanks, Simon Williams. [ruby-core:9547]
-
-Tue Feb  6 11:03:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* complement last commit.
-
-	* common.mk (*.inc): use VPATH.
-
-	* vm_opts.h: renamed from vm_opts.h.base.
-
-Tue Feb  6 10:02:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/insns2vm.rb: use vm_opts.h in VPATH.
-
-Tue Feb  6 03:47:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c: support Binding#eval.
-
-	* yarvtest/test_eval.rb: add a test for above change.
-
-Tue Feb  6 03:13:33 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c: refactoring (remove K&R style, move Binding stuffs from
-	  Init_Proc() to Init_Binding()).
-
-Tue Feb  6 01:07:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* intern.h: prepare rb_last_status_get() and rb_last_status_set().
-	  Use these functions instead of rb_last_status ([ruby-dev:30264]).
-
-	* process.c: define above functions.
-
-	* ext/pty/pty.c: use above functions.
-
-	* io.c (pipe_finalize): ditto.
-
-	* process.c: ditto.
-
-Mon Feb  5 21:26:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.h: add a prototype of rb_id2str().
-
-Mon Feb  5 21:06:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_thread.c, common.mk: remove eval_thread.c.
-
-	* yarvcore.c: rename cYarvThread to rb_cThread.
-
-	* gc.c: remove YARV_* prefix.
-
-	* gc.h: add an include guard and prototype of rb_gc_set_stack_end().
-
-	* inits.c: fix to ANSI prototype style and reorder Init_*().
-
-	* io.c (pipe_finalize): TODO: comment out last_status.
-
-	* process.c, yarvcore.h: fix to use yarv_vm_t#last_status instead of
-	  rb_last_status and make last_status_get() to access $?.
-
-	* yarvcore.c (vm_mark): mark yarv_vm_t#last_status.
-
-	* ruby.h: add declarations of rb_cISeq and rb_cVM.
-
-	* thread.c: move eval_thread.c codes to thread.c and remove yarv_*
-	  function prefix.
-
-	* thread.c (thread_start_func_2): use yarv_thread_t#first_func if
-	  it is not null.
-
-	* vm.c: fix copyright year.
-
-	* yarvcore.c (Init_vm): rename to Init_VM().
-
-Mon Feb  5 04:09:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_frame_callee): check if prev_cfp can be accessible.
-	  a patch from Yoshinori Sano <yoshinori.sano at gmail.com> in
-	  [ruby-dev:30252].  solves [ruby-dev:30200] and [ruby-core:9856].
-
-Sun Feb  4 20:34:41 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/rss-assertions.rb: removed needless code for backward
-	  compatibility.
-
-Sun Feb  4 02:22:59 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::read_multipart): Remove a debug
-	  print.
-
-Sat Feb  3 23:51:58 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (rb_compose_ivar2): function to create a new ivar2
-	  symbol from a symbol and a class.  back-ported from matzruby.
-
-	* parse.y (rb_decompose_ivar2): reverse function of
-	  rb_compose_ivar2().
-
-	* marshal.c (w_symbol): support class local instance variables.
-
-	* marshal.c (r_object0): ditto.
-
-	* compile.c (defined_expr): ditto.
-
-	* compile.c (iseq_compile_each): ditto.
-
-	* insns.def: add two new instructions: getinstancevariable2 and
-	  setinstancevariable2.
-
-Sat Feb  3 23:21:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (setclassvariable): remove unnecessary operand.
-
-	* compile.c (iseq_compile_each): ditto.
-
-	* common.mk (insns_info.inc): add dependency for insns_info.inc.
-
-Sat Feb  3 14:32:58 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_val2olevariantdata, ole_val2variant):
-	  fix the bug of WIN32OLE_VARIANT.new when variant type is
-	  VT_ARRAY.
-
-	* ext/win32ole/sample/excel1.rb: rewrite using WIN32OLE_VARIANT.
-
-	* test/win32ole/test_win32ole.rb: add some test.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-Sat Feb  3 03:35:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, */Makefile.sub, common.mk (vmasm): generalized.
-
-	* common.mk (runruby, benchmark, benchmark-each, tbench): use
-	  PROGRAM for the file to be built.
-
-	* proc.c (yarv_proc_alloc): needs return.
-
-	* call_cfunc.ci, compile.c, compile.h, debug.h, eval.c,
-	  eval_error.h, eval_jump.h, eval_load.c, eval_thread.c, gc.c,
-	  insnhelper.h, insns.def, iseq.c, main.c, numeric.c, parse.y,
-	  range.c, ruby.h, signal.c, thread.c, thread_win32.ci, vm.c,
-	  vm.h, vm_dump.c, vm_evalbody.ci, yarvcore.c, yarvcore.h:
-	  fixed indents and non-C90 comments.
-
-	* regenc.h: revert to before YARV.
-
-	* lib/mkmf.rb (create_makefile): make object files depend on
-	  extconf.h even if depend file exists.
-
-Fri Feb  2 23:39:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* common.mk (bin): add more dependency.  a patch from Tadashi
-	  Saito <shiba at mail2.accsnet.ne.jp>.  [ruby-dev:30245]
-
-Fri Feb  2 18:44:31 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (setclassvariable): remove warn argument.
-
-Fri Feb  2 18:36:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* common.mk (compile.$(OBJEXT)): add config.h to vm.c and
-	  compile.c.
-
-Fri Feb  2 18:27:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c: remove duplicated global variables rb_cProc and
-	  rb_cBinding.  [ruby-dev:30242]
-
-Fri Feb  2 00:13:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (SYMBOL_P): make Symbol immediate again for performance.
-
-	* string.c: redesign symbol methods.
-
-Thu Feb  1 23:25:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_id2str): store Strings for operator symbols.
-	  [ruby-dev:30235]
-
-Thu Feb  1 21:04:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (assignable_gen): no need to generate NODE_CVDECL.
-
-	* compile.c (iseq_compile_each): no NODE_CVDECL.
-
-Thu Feb  1 20:53:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm.c (eval_get_cvar_base): destination for class variable access
-	  is now strictly innermost surrounding class or module.  warned
-	  if accessed from toplevel.
-
-	* variable.c (rb_cvar_get): new class variable look-up scheme:
-	  1) look up in the class.  2) if the class is singleton attached
-	  to a class (i.e. metaclass) then start look up in the attached
-	  class and its ancestors. 3) otherwise, look-up in ancestors of
-	  the class.
-
-	* eval.c (cvar_cbase): destination for class variable access is
-	  the class/module that holds the method, or cbase outside of
-	  methods.
-
-Thu Feb  1 20:31:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_cvar_set): remove warn argument.
-
-Wed Jan 31 14:52:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (TestIterator::test_block_given_within_iterator):
-	  add new test.  [ruby-core:10125]
-
-Tue Jan 30 17:01:21 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_sub_bang): calling rb_str_modify() should be just
-	  before actually modifying the string.
-	  fixed: [ruby-dev:30211] (originally reported by zunda)
-
-Tue Jan 30 13:24:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_pred): add Integer#pred corresponding
-	  Integer#succ.  [RCR#5]
-
-Tue Jan 30 12:05:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: autoconf 2.61 support.  [ruby-core:10016]
-
-Mon Jan 29 23:52:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/compile.rb: replace YARVCore by VM class.
-
-Mon Jan 29 17:52:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/date/format.rb (Date::Format::Bag::method_missing): add
-	  prefix to avoid making t class-local instance variable.
-
-Mon Jan 29 21:32:37 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE.locale=, WIN32OLE.locale,
-	  WIN32OLE_VARIANT#vartype.
-
-	* test/win32ole/test_win32ole.rb: add test for WIN32OLE.locale=,
-	  WIN32OLE.locale.
-
-	* test/win32ole/test_win32ole_variant.rb: add test for
-	  WIN32OLE_VARIANT#vartype.
-
-Mon Jan 29 14:14:35 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/parse.rb: replace YARVCore by VM class.
-	  http://d.hatena.ne.jp/ysano2005/20070128
-
-Sun Jan 28 08:41:49 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: refactoring.
-
-Sat Jan 27 18:36:33 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_val2olevariantdata): bug fix.
-	  WIN32OLE_VARIANT.new check that 1st argument should T_ARRAY
-	  when variant type is VT_ARRAY.
-
-	* test/win32ole/test_win32ole_variant.rb: add some test.
-
-Fri Jan 26 23:55:56 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: bug fix of WIN32OLE_VARIANT when variant
-	  type is VT_BYREF|VT_VARIANT.
-
-	* test/win32ole/test_win32ole_variant_with_ie.rb: ditto.
-
-Fri Jan 26 12:03:39 2007  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb (TkConfigMethod#__confinfo_cmd,
-	  __conv_keyonly_optkeys): make them private [ruby-dev:30074].
-
-	* ext/tk/lib/tk/txtwin_abst.rb: fix typo [ruby-dev:30073].
-
-	* ext/tk/lib/tk/canvas.rb (TkCanvas#scan_dragto): lack of an argument.
-
-	* ext/tk/lib/tk/canvas.rb: clarify the including module name
-	  [ruby-dev:30080].
-
-	* ext/tk/lib/tk/scrollable.rb: change primary name of modules
-	  [ruby-dev:30080].
-
-Fri Jan 26 07:48:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_init_copy): need to copy internal
-	  structure on clone and dup.  [ruby-dev:30192]
-
-Wed Jan 24 20:34:51 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/ruby/test_iterator.rb: removed a needless workaround.
-
-Wed Jan 24 18:05:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-font-lock-syntactic-keywords): fix
-	  regexp font-lock bug.  [ruby-talk:235758]
-
-Tue Jan 23 18:26:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::read_multipart): use == instead
-	  of ===.  [ruby-dev:30176]
-
-Tue Jan 23 15:39:25 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* Makefile.in, common.mk, configure.in, */{Makefile.sub, configure.bat,
-	  setup.mak}: add --with-baseruby configure option.
-
-Mon Jan 22 14:57:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: fix errors in socket sample code.
-	  [ruby-core:09992]
-
-Sat Jan 20 21:05:18 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fole_s_set_code_page): WIN32OLE.codepage=
-	  accepts installed codepage.
-
-	* test/win32ole/test_win32ole.rb (test_s_codepage_changed): ditto.
-
-Sat Jan 20 11:18:49 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke, ole_invoke2, ole_propertyput):
-	  modify WIN32OLERuntimeError message.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sat Jan 20 06:45:21 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_proc.c (method_receiver): add new method to get the bound
-	  receiver of the method object.  [ruby-talk:234949]
-
-	* eval_proc.c (method_name): new method to get the name of a
-	  method.
-
-	* eval_proc.c (method_owner): a new method to get the class or
-	  module that defines the method.
-
-Fri Jan 19 17:12:23 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): add WIN32OLE_VARIANT::Empty,
-	  WIN32OLE_VARIANT::Null, WIN32OLE_VARIANT::Nothing.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-	* test/win32ole/test_nil2vtempty.rb(test_openSchema): ditto.
-
-Fri Jan 19 06:53:38 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (olevariant_free): fix memory leak.
-
-	* ext/win32ole/win32ole.c (ole_val2olevariantdata):
-	  WIN32OLE_VARIANT.new accepts nil as first argument for some VARIANT
-	  TYPE.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-Wed Jan 17 17:31:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* some refactoring around yarvcore and proc.
-
-	* eval_proc.c: renamed to proc.c.
-
-	* common.mk: ditto.
-
-	* yarvcore.h, yarvcore.c: rename or remove some global variables
-	  removed: mYarvCore, mYarvInsns
-	  renamed: cYarvISeq -> rb_cISeq,
-	           cYarvProc -> rb_cProc, cYarvBinding -> rb_cBinding
-	  ::YarvCore module is removed and ::YarvCore::VM class becomes ::VM.
-	  And change/remove some functions which added with YARV.
-
-	* compile.c: ditto.
-
-	* eval.c: ditto.
-
-	* iseq.c: ditto.
-
-	* vm.c: ditto.
-
-	* inits.c: rename Init_yarvcore to Init_vm.
-
-	* yarvcore.c, proc.c: move some functions and initialization
-	  from yarvcore.c to proc.c.
-
-	* intern.h, proc.c: add global function rb_binding_new(void).
-
-Tue Jan 16 17:49:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (eval_search_super_klass): rename to search_super_klass() and
-	  use it by th_call_super().
-
-	* insns.def: ditto.
-
-Tue Jan 16 17:48:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: fix ruby script path.
-
-Tue Jan 16 17:39:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (invoke_block): fix to specify self.
-
-Tue Jan 16 12:12:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* env.h: removed
-
-Tue Jan 16 12:00:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_proc.c (rb_proc_new): added.
-
-	* string.c (sym_to_proc): supported.
-
-	* vm.c (invoke_block, th_invoke_yield, th_invoke_proc): fix to support
-	  rb_proc_new.
-
-	* yarvcore.c: add a test code.
-
-Sat Jan 13 23:24:59 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_free, ole_type_free,
-	  olemethod_free, olevariable_free, oleparam_free,
-	  ole_event_free): fix memory leak.  [ruby-core:09846]
-
-Wed Jan 10 00:10:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_replace): use ptr and len of orig instead of
-	  shared.  fixed: [ruby-dev:30116]
-
-Tue Jan  9 17:48:38 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (rb_find_file): should not call fpath_check() with NULL.
-	  fixed: [ruby-core:09867]
-
-Tue Jan  9 12:29:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getpwuid, etc_getgrgid): fix to correctly
-	  convert uid/gid from VALUE.
-
-	* ext/etc/etc.c (etc_getpwuid): ditto.
-
-Tue Jan  9 03:54:38 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upto): String#upto from empty string makes
-	  infinite loop.  [ruby-core:09864]
-
-	* string.c (rb_str_upto): use RSTRING_LEN().
-
-Sun Jan  7 18:36:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_stop_timer_thread(), rb_thread_reset_timer_thread(),
-	  rb_thread_start_timer_thread()): added.
-
-	* thread_pthread.ci: add a native_thread_join() and move
-	  rb_thread_reset_timer_thread() definition to thread.c.
-
-	* thread_win32.ci: ditto
-
-	* process.c: fix before_exec(), after_exec() to stop timer thread
-	  (and restart timer thread if exec failed).  and fix to reset
-	  timer thread information when forked child process starts
-	  (to fix [ruby-core:09822]).
-
-Sun Jan  7 18:28:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: add a "compare" rule and fix MATZRUBY variable
-
-Sun Jan  7 17:47:16 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole.rb: add test for WIN32OLE#[],
-	  WIN32OLE#[]=.
-
-	* ext/win32ole/win32ole.c: update comment for rdoc of
-	  WIN32OLE#[] and WIN32OLE#[]=.
-
-Sun Jan  7 12:13:26 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser#find_class_comment):
-	  Look for class and module comments above rb_define_class and
-	  rb_define_module.  Patch by Daniel Berger <djberg96 at gmail.com>
-
-Sun Jan  7 10:32:12 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser#handle_constants):
-	  Properly handle escaping of : in comments.
-	* test/rdoc/parsers/test_parse_c.rb:
-	  Test RDoc::C_Parser#do_classes and Rdoc::C_Parser#find_class_comment.
-
-Sun Jan  7 09:31:18 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: updated based on date2 4.0.1.
-
-Sat Jan  6 18:46:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast, rb_io_getline): increase lineno
-	  when met the delimiter or EOF.  fixed: [ruby-dev:30081]
-
-	* io.c (prepare_getline_args, rb_io_getline_1): split
-	  preparation of arguments and reading.  [ruby-dev:30085]
-
-Sat Jan  6 13:48:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (send): fix to optimize send() with Symbol.
-
-	* yarvtest/test_method.rb: add another test.
-
-Sat Jan  6 13:43:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: add PHONY dependency to some rules
-
-Sat Jan  6 11:50:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_read): fix wrong replacement.  [ruby-dev:30070]
-
-Sat Jan  6 09:10:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: support direct method dispatch with "send" or "funcall".
-	  This means that "obj.send :m" skips "BasicObject#send" invocation
-	  (method frame creation, etc) and "obj.m" invokes directly.
-	  If you make backtrace, there are no entries of "send" method.
-
-	* compile.c (iseq_specialized_instruction): fix to support above
-
-	* eval.c: ditto (remove "static" from rb_f_send and rb_f_funcall
-
-	* yarvcore.c: ditto (add a external IDs for compiler)
-
-	* yarvcore.h: ditto (add a VM_CALL_SEND_BIT macro)
-
-	* yarvtest/test_method.rb: add tests for above changes
-
-	* eval.c: remove unused "Kernel#send" declaration
-
-Sat Jan  6 08:29:17 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): add
-	  WIN32OLE::VARIANT::VT_EMPTY, WIN32OLE::VARIANT::VT_NULL
-
-	* test/win32ole/test_win32ole_variant_m.rb (test_variant): ditto.
-
-Sat Jan  6 03:49:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/run.rb: change option format
-
-	* common.mk: ditto
-
-Fri Jan  5 22:21:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_app_pentomino.rb: use Array#dup instead of
-	  Array#clone
-
-	* benchmark/bmx_temp.rb: removed
-
-	* benchmark/run.rb: use run.rb instead of run_rite.rb
-
-	* common.mk: ditto
-
-	* benchmark/run_rite.rb: removed
-
-	* common.mk: use $(srcdir)/test.rb to run a test program
-	  with "make run"
-
-	* benchmark/bmx_temp.rb: removed and
-	  set svn:ignore (bmx_*.rb) to benchmark/
-
-	* test.rb: set svn:ignore
-
-Fri Jan  5 21:03:08 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarvtest/yarvtest.rb: fix to compare results
-
-Fri Jan  5 20:52:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, compile.h: add ADD_CALL_RECEIVER() macro.
-
-	* insns.def (send): use GET_SELF() direct if FCALL.
-
-	* eval.c (rb_f_send): check method dispatch type to permit
-	  invoking private method when dispatch type is FCALL/VCALL
-
-	* insns.def (opt_ltlt): remove useless statement.
-
-	* vm.h: remove unused macros.
-
-Fri Jan  5 20:50:31 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/run_rite.rb: fix to use readlines instead of
-	  read(...).lines (because 1.8 doesn't have String#lines).
-
-Fri Jan  5 20:28:19 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_win32.ci (rb_thread_reset_timer_thread):
-	  added ([ruby-dev:30086]).
-
-Fri Jan  5 20:20:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: add .SUFFIXES rule
-
-Fri Jan  5 15:58:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_method.h (rb_alias): fix to check search result
-
-Fri Jan  5 13:59:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_method.h (rb_add_method): fix to check old_node
-
-Fri Jan  5 12:03:07 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each, set_block_local_tbl):
-	  support NODE_LAMBDA (partly).
-
-	* sample/test.rb: restore test of NODE_LAMBDA
-
-	* test/ruby/test_lambda.rb: ditto
-
-Fri Jan  5 12:31:23 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* thread_pthread.ci (native_sleep): fix tv_nsec overflow.
-
-Thu Jan  4 20:01:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: rename yarv-test-[all/each] to compare-test[/-each].
-	  purpose of "compare-test" rule is to compare ruby (trunk) and
-	  matzruby (branches/matzruby) binary in miniruby level.  MATZRUBY
-	  parameter means an path to miniruby of matzruby binary.  to do this
-	  comparison test, you should build matzruby branch.
-
-	* yarvtest/yarvtest.rb: fix to use command line option as
-	  command names to be compared.
-
-	* yarvtest/runner.rb: remove a debug output.
-
-Thu Jan  4 19:12:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: fix to use test.rb script in build directory.
-	  ($(srcdir)/test.rb -> test.rb)
-
-Thu Jan  4 17:28:05 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/utils.rb (WEBrick::Utils::TimeoutHandler#initialize):
-	  Arrays could not be modified in its each block. [ruby-dev:30063]
-
-Thu Jan  4 16:57:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* yarv_version.h: removed.
-
-	* common.mk: remove yarv_version.h from rules
-
-	* yarvcore.h (Init_yarvcore): remove useless constants
-
-Thu Jan  4 17:00:06 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (Init_ossl_asn1):
-	  OpenSSL::ASN1::ASN1Data#value,#tag,#tag_class and
-	  OpenSSL::ASN1::BitString#unused_bits should be public.
-
-Thu Jan  4 13:45:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.ci: fix last changes around PTHREAD_STACK_MIN.
-
-Thu Jan  4 13:42:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: restore changes.
-
-Thu Jan  4 10:33:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.ci: fix to skip using PTHREAD_STACK_MIN.
-	  [ruby-dev:30063]
-
-Thu Jan  4 10:30:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/run_rite.rb (bm): fix to use lines.
-
-Wed Jan  3 18:49:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getline): lineno update condition was wrong.
-	  [ruby-dev:30065]
-
-	* io.c (rb_io_getline_fast): ditto.
-
-Wed Jan  3 11:36:51 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (ruby_dup): start GC on ENOMEM as well.
-
-Tue Jan  2 10:29:54 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/zlib/zlib.c: fix to compile on YARV
-	  ruby_errinfo -> rb_errinfo()
-
-Mon Jan  1 08:07:06 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/tk/tcltklib.c: fix to compile on YARV
-	  ruby_errinfo -> rb_errinfo(),
-	  ruby_safe_level -> rb_safe_level().
-
-Mon Jan  1 07:57:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/drb/test_drbssl.rb: fix to skip drb tests.
-
-Mon Jan  1 06:13:11 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/c_parser.rb: Make Rdoc accessible.  Update constant
-	  value information.
-
-Mon Jan  1 06:13:11 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/bigdecimal/bigdecimal.c: Update constant comments to provide
-	  values for RDoc.
-
-Mon Jan  1 06:05:55 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser#handle_constants):
-	  Allow RDoc comment to give friendly value for rb_define_const.  Patch
-	  by Daniel Berger <djberg96 at gmail.com>, [ruby-patches-7499].
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser#handle_constants): Fix
-	  whitespace handling in constant comments.
-
-Mon Jan  1 00:00:00 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* Merge YARV
-
-Sun Dec 31 16:22:48 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* array.c: Fix Array#reject.
-
-Sun Dec 31 00:46:25 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date2.rb: removed.
-
-Sun Dec 31 00:15:13 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: updated based on date2 4.0.
-
-Sat Dec 30 04:38:23 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_each_with_index): reuse array for yield parameters.
-
-	* enum.c (enum_min, enum_max): ditto.
-
-Sat Dec 30 04:25:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): reuse array for yield parameters.
-
-Sat Dec 30 02:54:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_gets): accepts limit argument.
-
-	* ext/stringio/stringio.c (strio_readline, strio_each,
-	  strio_readlines): ditto.
-
-Sat Dec 30 02:22:32 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_getline): add limit capability.
-
-	* io.c (rb_io_gets_m): accepts limit argument.  [ruby-talk:231563]
-
-	* io.c (rb_io_readline, rb_io_readlines, rb_io_each_line, argf_getline):
-	  ditto.
-
-	* io.c (appendline): add limit capability.
-
-	* io.c (rb_io_getline_fast, rb_io_getline): ditto.
-
-	* io.c (rb_io_getline): small refactoring for DRY.
-
-	* io.c (rb_io_s_foreach, rb_io_s_readlines): small refactoring.
-
-Thu Dec 28 15:27:38 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie::initialize): use Array() again.
-	  [ruby-core:09781]
-
-Wed Dec 27 20:52:32 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: remove WIN32OLE::PROPERTY class.
-
-	* ext/win32ole/tests/testWIN32OLE.rb: ditto.
-
-Wed Dec 27 10:04:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_Array): returns 1-element array if the argument
-	  does not have to_ary nor to_a.
-
-Tue Dec 26 21:02:14 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_folderitem2_invokeverb.rb: The argument
-	  of Shell.NameSpace should not be file path.
-
-Tue Dec 26 06:13:08 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/bigdecimal/bigdecimal.c: remove useless method
-	  BigDecimal#!=. [ruby-dev:30050]
-
-Thu Dec 21 15:37:17 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_slice_bang): rdoc description bug fixed.
-	  [ruby-core:09754]
-
-Wed Dec 20 12:54:31 2006  Koichi Sasada  <ko1@atdot.net>
-
-	* Convert CVS repository to Subversion repository.
-
-Mon Dec 18 08:36:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie::initialize): Array(string) no longer
-	  works.  [ruby-core:09738]
-
-Fri Dec 15 00:19:53 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (COMPILE_RULES): latter rule has higher priority.
-
-	* lib/mkmf.rb (create_makefile): remove static library before update,
-	  to get rid of sludge of Borland tlib.exe.
-
-Thu Dec 14 18:29:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/readline/readline.c: NetBSD editline does not have
-	  rl_username_completion_function() and rl_completion_matches().
-	  a patch from Takahiro Kambe <taca at back-street.net>.
-	  [ruby-dev:30008]
-
-Thu Dec 14 18:20:43 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/locale.rb (IRB::Locale::puts): typo fixed.  a patch from
-	  NAKAMURA Usaku <usa@ruby-lang.org>.  [ruby-dev:30012]
-
-Tue Dec 12 23:33:53 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (Switch#parse_arg, Switch#conv_arg): splat failures.
-
-Mon Dec 11 11:51:10 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha2/lib/sha2.rb: Moved one level up from under
-	  the superfluous subdirectory digest/.
-
-Mon Dec 11 11:46:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_define_const): typo fixed.
-
-Mon Dec 11 09:36:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_aset): index double decode problem.
-	  [ruby-core:09695]
-
-Sat Dec  9 21:39:24 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): keep the exception till after END blocks.
-	  [ruby-core:09675]
-
-Sat Dec  9 11:22:00 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/locale.rb (IRB::Locale::search_file): use File.exist?
-	  instead of File.exists?.  a patch from Yutaka Kanemoto
-	  <kinpoco at gmail.com> in [ruby-dev:30000].
-
-Fri Dec  8 18:11:18 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/optparse.rb: cannot put :nodoc: before method definition.
-	  put after it.
-
-Fri Dec  8 17:00:13 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bin/rdoc: use File.exist? instead of File.exists?.
-
-Thu Dec  7 23:50:21 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): new method Dir.exist?(path).
-	  [ruby-core:09663]
-
-	* file.c (Init_File): remove File.exists?; use File.exist?
-	  instead.
-
-	* file.c: rename functions to test_* to rb_file_*_p.
-
-Thu Dec  7 09:29:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/weakref.rb (WeakRef::__setobj__): should support
-	  marshaling.  [ruby-talk:228508]
-
-Wed Dec  6 23:58:36 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk (NULLCMD): moved for platforms that empty
-	  command does not run.  fixed: [ruby-dev:29994]
-
-	* win32/win32.c (init_stdhandle): redirect unopened IOs to NUL.
-	  [ruby-core:09572]
-
-Tue Dec  5 19:01:42 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (SITE_DIR): fixed to empty RUBY_SITE_LIB in config.h on
-	  NetBSD.  fixed: [ruby-dev:29358]
-
-Tue Dec  5 18:38:21 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/matrix.rb (Matrix::rank): use quo method to avoid integer
-	  division problem.  [ruby-core:09644]
-
-	* lib/matrix.rb (Matrix::rank_e): ditto.
-
-Tue Dec  5 00:59:05 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): need to parse "/=" as
-	  self assignment operator, not regex.  [ruby-talk:227324]
-
-Tue Dec  5 00:19:14 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h, object.c, variable.c (rb_mod_constants): added an optional
-	  flag to search ancestors, which is defaulted to true, as well as
-	  const_defined? and const_get.  [ruby-dev:29989]
-
-Mon Dec  4 23:49:28 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (install_recursive): get rid of warning.
-
-	* lib/optparse.rb (CompletingHash#match): get rid of splat failure.
-
-Mon Dec  4 19:16:39 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest/hmac.rb: Do alias << update.
-
-Mon Dec  4 10:48:03 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (OFFT2NUM): use LONG2NUM() if sizeof(long) equals to
-	  sizeof(off_t).
-
-Mon Dec  4 08:32:25 2006  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::read_multipart): should quote
-	  boundary. JVN#84798830
-
-Sun Dec  3 16:16:53 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest/hmac.rb: Fix problems with update
-	  timing. [Reported by: oss-ruby@technorama.net]
-
-Sat Dec  2 07:33:53 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils::FormData::<<):
-	  HTTPUtils::parse_header() takes a string.  [ruby-dev:29931]
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils::parse_header):
-	  String does no longer have each method.
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils::parse_form_data):
-	  ditto.
-
-Sat Dec  2 07:09:04 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ocsp.c: OpenSSL::OCSP::OSCPError should be
-	  subclass of OpenSSL::OpenSSLError. [ruby-dev:29980]
-
-Fri Dec  1 16:31:53 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: shouldn't run the killed thread at callback.
-	  [ruby-talk: 227408]
-
-Tue Nov 28 17:25:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_iter_check): should check modification (size
-	  change) during iteration.
-
-	* array.c (rb_ary_initialize, rb_ary_shift, rb_ary_unshift,
-	  rb_ary_splice, rb_ary_reverse, rb_ary_sort, rb_ary_delete,
-	  rb_ary_delete_at, rb_ary_reject_bang, rb_ary_replace,
-	  rb_ary_clear, rb_ary_fill, rb_ary_uniq_bang, rb_ary_compact,
-	  rb_ary_shuffle): add iteration check.
-
-Mon Nov 27 09:00:15 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_ord): typo fixed.  reported from Kornelius
-	  Kalnbach <murphy@rubychan.de>.  [ruby-core:09621]
-
-Sun Nov 26 16:36:46 2006  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* version.h: addition of RUBY_PATCHLEVEL.
-	* version.c: ditto.
-
-Wed Nov 22 16:00:49 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: support --with-X11/--without-X11 option.
-
-	* ext/tk/README.tcltklib: add description about --with-X11-* option
-	  [ruby-talk:225166] and --with-X11/--without-X11 option.
-
-	* ext/tk/tkutil/extconf.rb: able to be called manually
-	  [ruby-talk:225950].
-
-Sat Nov 18 23:39:20 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_tap): a new method.  [ruby-talk:224013]
-
-Wed Nov 15 23:22:54 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (test_grpowned, rb_stat_grpowned): should honor
-	  supplementary group IDs.  [ruby-core:09546]
-
-Tue Nov  7 18:35:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (formal_assign): need to pack rest arg information in
-	  argc.
-
-Tue Nov  7 18:05:01 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/itemconfig.rb: minor bug fix.
-
-Tue Nov  7 17:52:08 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_include_module): revert duplicate inclusion of
-	  modules.  [ruby-dev:29793]
-
-Tue Nov  7 17:18:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (method_missing): update old argument adjustment.
-
-Tue Nov  7 16:41:21 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (when_check): need to splat for NODE_ARGSCAT as well.
-	  [ruby-dev:29860]
-
-Mon Nov  6 22:23:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (Init_String): remove duplicated definition of
-	  Symbol#to_s.
-
-Mon Nov  6 18:54:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (svalue_to_avalue): need to splat but no error.
-
-	* eval.c: new macros - YIELD_CALL, YIELD_VALUES.
-
-	* eval.c (rb_yield_values): specify YIELD_VALUES.
-
-	* eval.c (rb_yield_0): use new macros.
-
-	* eval.c (proc_invoke): slightly modified to separate YIELD_CALL
-	  and YIELD_VALUES from YIELD_ARY_ARGS.
-
-	* object.c (Init_Object): add nil.to_splat => [].
-
-Mon Nov  6 15:41:55 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/itemconfig.rb: ext/tk/lib/tk/itemconfig.rb: bug
-	  fix on 'itemconfiginfo' method, and modify to make it easy to
-	  override 'itemconfiginfo' method.
-
-	* ext/tk/lib/tkextlib/tile/treeview.rb: support Tile 0.7.8.
-
-	* ext/tk/lib/tkextlib/version.rb: [new] add Tk::Tkextlib_RELEASE_DATE
-	  to get the information from scripts.
-
-	* ext/tk/lib/tk.rb: load 'tkextlib/version.rb', and update RELEASE_DATE
-
-	* ext/tk/lib/tkextlib/SUPPORT_STATUS: update.
-
-	* ext/tk/sample/editable_listbox.rb: [new] the listbox with editable
-	  items. It's one of the example about usage of Place geometry manager.
-
-	* ext/tk/sample/tktextio.rb: improve the functions of TkTextIO class.
-	  Those are required by 'irbtkw.rbw'.
-
-	* ext/tk/sample/irbtkw.rbw: [new] IRB on Ruby/Tk. It doesn't need any
-	  real console. IRB works on a text widget without I/O blocking. That
-	  is, thread switching on IRB will work properly, even if on Windows.
-
-Mon Nov  6 00:42:05 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg_dup_check): vid may be nameless internal id.
-
-Sun Nov  5 19:52:19 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: updated based on date2 3.9.7.
-
-Sat Nov  4 13:09:31 2006  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: accept NOMODSEQ. [ruby-core:9002]
-
-Fri Nov  3 00:16:37 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_getnameinfo__aix): AF_INET6 workaround
-	  for AIX.  a patch from Yutaka Kanemoto <kinpoco AT gmail.com>.
-	  [ruby-dev:29744]
-
-Thu Nov  2 14:19:44 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#^): Fix XOR operation against a container that
-	  holds duplicate values. [ruby-core:9372]
-
-Thu Nov  2 10:00:06 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c: class Symbol is no longer subclass of String. also
-	  covers [ruby-core:09366]
-
-Thu Nov  2 08:21:07 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/xmlrpc/create.rb (XMLRPC::Create::conv2value): Symbol should
-	  come earlier than String.
-
-	* lib/soap/mapping/rubytypeFactory.rb (RubytypeFactory::obj2soap):
-	  ditto.
-
-	* lib/set.rb (TC_Set::test_s_new): strings are no longer
-	  Enumerable
-
-	* lib/soap/property.rb (Property::load): ditto.
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils::parse_header): ditto.
-
-	* lib/soap/mimemessage.rb (MIMEMessage::Headers::parse): ditto.
-
-Thu Nov  2 09:08:04 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c: revert lfree shift/unshift boost patch to avoid unknown
-	  memory error.
-
-Wed Nov  1 23:24:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (struct RArray): revert embedding ptr in RVALUE.
-
-	* array.c: ditto.
-
-Wed Nov  1 23:01:55 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (hash): use Bob Jenkins' hash algorithm.
-
-Wed Nov  1 02:22:31 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest/hmac.rb (Digest::HMAC::update): Minor
-	  optimization.
-
-	* ext/digest/digest.c (rb_digest_instance_equal): Allow comparing
-	  a digest instance with another of a different class.
-
-Wed Nov  1 01:05:13 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (rb_call0): fixed bug of zsuper with both of opt and rest.
-	  fixed: [ruby-list:42928]
-
-Tue Oct 31 17:03:21 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_dup): duplicate the class of original time.
-	  [ruby-core:09357]
-
-	* lib/time.rb (Time::make_time, Time::rfc2822, Time::httpdate):
-	  should respect subclasses.  [ruby-core:09357]
-
-Tue Oct 31 16:25:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_shared_first): should address offset after
-	  ary_shared_array().  [ruby-core:09358]
-
-Mon Oct 30 23:40:52 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (miniruby): add XLDFLAGS.
-
-	* configure.in (aix): use -bE option for miniruby.  [ruby-dev:29698]
-
-	* dir.c (glob_helper): get rid of possible memory leak.
-
-	* win32/win32.c (cmdglob, rb_w32_cmdvector, rb_w32_opendir,
-	  rb_w32_get_environ): not to use GC before initialization.
-
-Mon Oct 30 19:28:02 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): use better approximation.
-
-Mon Oct 30 18:35:33 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): wrong allocation length.  a patch from
-	  U.Nakamura <usa at garbagecollect.jp> [ruby-dev:29710]
-
-Mon Oct 30 12:34:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): fix commit miss.  [ruby-dev:29707]
-
-Mon Oct 30 11:15:40 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): should preserve leading zero
-	  information for negative %b and %x.  [ruby-talk:221347]
-
-Sun Oct 29 19:51:31 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* regexec.c: invalid offset value was used in STATE_CHECK_BUFF_INIT().
-
-Sat Oct 28 20:13:18 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* oniguruma.h: Version 4.4.5
-
-	* regint.h: ditto.
-
-	* regerror.c: ditto.
-
-	* regexec.c: ditto.
-
-	* regcomp.c ditto.
-
-	* regparse.c ditto.
-
-Sat Oct 28 07:56:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object0): missing break.  [ruby-core:09345]
-
-Fri Oct 27 17:30:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enum_each_cons): move RETURN_ENUMERATOR() after
-	  argument check.
-
-Thu Oct 26 21:05:48 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_pkcs7.c (ossl_pkcs7_verify): should clear error.
-	  (fix http://bugs.debian.org/394336)
-
-	* ext/openssl/ossl_ns_spki.c (ossl_spki_initialize): ditto.
-
-Thu Oct 26 15:23:47 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c: remove by_slice and by_cons.
-
-Thu Oct 26 15:12:12 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/digest/digest.c (Init_digest): typo.
-
-Wed Oct 25 17:16:05 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/digest/test_digest_hmac.rb: added.
-
-Wed Oct 25 16:34:31 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/test.sh: make this script work again.
-
-Wed Oct 25 07:59:42 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: updated based on date2 3.9.6.
-	  [ruby-core:09323]
-
-Wed Oct 25 00:58:19 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/mkexports.rb, win32/resource.rb: use unique variable names.
-
-Tue Oct 24 19:18:53 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_by_slice): new method added.
-
-	* enumerator.c (enumerator_by_cons): ditto.
-
-Tue Oct 24 18:56:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enum_each_slice, enum_each_cons): returns
-	  Enumerable::Enumerator if no block is given.  [ruby-dev:29246]
-
-	* enumerator.c: remove methods: enum_with_index, enum_slice,
-	  enum_cons.  [ruby-dev:29246]
-
-Tue Oct 24 18:51:27 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_zip): add RETURN_ENUMERATOR() to zip method.
-
-Mon Oct 23 04:30:04 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object0): use return value from proc given as the
-	  second argument to Marshal#load() to allow value replacement in
-	  the restoring data.
-
-Sun Oct 22 14:48:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (Init_signal): avoid duplicated installation of SIGCHLD
-	  handler.
-
-Sun Oct 22 16:47:56 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_substr): should be infected with only original
-	  string, but not the shared string.  fixed: [ruby-core:09152]
-
-	* string.c (rb_str_new4): keep shared string untainted when original
-	  string is tainted.  fixed: [ruby-dev:29672]
-
-Sun Oct 22 07:55:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upcase, rb_str_downcase, rb_str_downcase,
-	  rb_str_upcase_bang, rb_str_downcase_bang, rb_str_swapcase_bang):
-	  add RDoc description that case conversion to be effective only
-	  in ASCII region.
-
-Sun Oct 22 05:20:34 2006  URABE Shyouhei  <shyouhei@ice.uec.ac.jp>
-
-	* configure.in: alloca is broken; use C_ALLOCA instead.
-	  [ruby-dev:29416]
-
-Sat Oct 21 17:50:40 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest.rb: Follow the framework updates.
-
-Fri Oct 20 22:00:43 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest/hmac.rb: Complete half-boiled updates.
-
-	* ext/digest/sha2/lib/digest/sha2.rb: Fix #initialize_clone().
-
-Fri Oct 20 20:28:37 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest: Prefix C constants with RUBY_ and C type names with
-	  rb_ to avoid name clash in writing extensions.
-
-	* ext/digest: Introduce Digest::Class and Digest::Instance for
-	  ease of implementing subclasses and add-ons, inspired by
-	  gotoyuzo.
-
-	* ext/digest: The Digest::Instance module now requires and assumes
-	  that any instance be resettable and clonable, and add some
-	  convenient instance methods such as "new()", for creating a new
-	  copy, parameter taking "digest()" and "hexdigest()", for instant
-	  calculation.  These methods make digest instances work just like
-	  digest classes.
-
-	* ext/digest/sha2/lib/digest/sha2.rb:
-	  Add the Digest::SHA2 class to wrap up SHA2 variants: SHA256,
-	  SHA384 and SHA512, hoping this module would make a decent
-	  example of a digest subclass written in Ruby.
-
-	* ext/digest/lib/digest.rb: Adjust autoload entries for SHA2
-	  classes.
-
-	* ext/digest/lib/digest/hmac.rb: Follow the framework updates.
-
-Fri Oct 20 10:47:43 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb: fixed the bug of handling COMMON_MACROS.
-
-Fri Oct 20 08:42:38 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (NULLCMD): dummy command.
-
-	* bcc32/Makefile.sub (post-install-*): Borland make cannot ignore
-	  command-less double-colon rules.  [ruby-dev:29676]
-
-Fri Oct 20 00:37:07 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bcc32/Makefile.sub ($(LIBRUBY_SO)): execute pre-link hook.
-
-	* ext/extmk.rb: workaround for Borland make.
-
-Wed Oct 18 23:02:40 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_shift): shorten copy size.  fixed: [ruby-list:42907]
-
-	* signal.c (Init_signal): handle SIGTERM.  fixed: [ruby-list:42895]
-
-	* win32/win32.c (rb_w32_utime): allow NULL to set the current time.
-	  [ruby-talk:219248]
-
-Wed Oct 18 13:25:50 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_line): String#lines now works when a block
-	  is given.  in other words, lines become an alias to each_line.
-	  [ruby-core:09218]
-
-	* string.c (rb_str_each_byte): ditto for bytes in place of lines.
-
-Wed Oct 18 00:55:33 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): use particular enums.  [ruby-core:09221]
-
-Tue Oct 17 22:03:08 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/erb.rb: String#each was removed, use #each_line instead.
-
-Tue Oct 17 12:27:32 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_shared_array): should set NOEMBED flag for a copied
-	  array.
-
-Tue Oct 17 08:04:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_lines): now takes optional argument for the
-	  line separator.
-
-	* io.c (rb_io_lines, rb_io_bytes): new methods.
-
-Mon Oct 16 23:33:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_unshift_m): a bug in lfree shift length
-	  calculation.
-
-Mon Oct 16 08:30:43 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: *OBJS are not needed for extension libraries.
-
-	* {bcc32,wince,win32}/Makefile.sub (config.status): fixed typo,
-	  missing comma.
-
-Mon Oct 16 00:44:26 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_unpack): execute block if given with unpacked value
-	  instead of creating an array.  an idea from Tim Bray.
-
-Sun Oct 15 01:03:08 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (Collector::Dir#collect): append base
-	  directory but not prepend.
-
-	* lib/test/unit/collector/dir.rb (Collector::Dir#collect_file): do not
-	  join with dot.  fixed: [ruby-core:09179]
-
-Sat Oct 14 23:39:50 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (singleton): no need to re-create NODE_SELF() again.
-	  [ruby-core:09177]
-
-Sat Oct 14 23:25:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_warning, parser_warn): some error message may
-	  contain format specifiers.  a patch from Akinori MUSHA <knu at
-	  iDaemons.org>.  [ruby-dev:29657]
-
-	* regparse.c (onig_rb_warning, onig_rb_warn): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (VpException): ditto.
-
-	* ext/dl/handle.c (rb_dlhandle_initialize): ditto.
-
-	* ext/gdbm/gdbm.c (rb_gdbm_fatal): ditto.
-
-Sat Oct 14 08:15:42 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c, ext/digest/digest.h,
-	  ext/digest/md5/md5init.c, ext/digest/rmd160/rmd160init.c,
-	  ext/digest/sha1/sha1init.c, ext/digest/sha2/sha2init.c:
-	  Introduce API versioning.
-
-	* ext/digest/digest.c, ext/digest/digest.h,
-	  ext/digest/md5/md5init.c, ext/digest/rmd160/rmd160init.c,
-	  ext/digest/sha1/sha1init.c, ext/digest/sha2/sha2init.c: Remove
-	  the constants DIGEST_LENGTH and BLOCK_LENGTH and turn them into
-	  instance methods digest_length() and block_length().  Class
-	  methods with the same names are also provided, which take extra
-	  parameters for a digest method.
-
-	* ext/digest/lib/digest/hmac.rb: Completely redesign the somewhat
-	  bizarre API, now that Digest classes can take hashing
-	  parameters.
-
-Sat Oct 14 05:54:05 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c: Improve RDoc documentation further more.
-
-Sat Oct 14 04:33:33 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c: Improve RDoc documentation.
-
-	* ext/digest/digest.c (Init_digest, rb_digest_base_s_digest,
-	  rb_digest_base_s_hexdigest): Make Digest::Base::digest() and
-	  Digest::Base::hexdigest() take extra arguments, which are passed
-	  through to the constructor in an internal call.
-
-	* ext/digest/bubblebabble/bubblebabble.c
-	  (rb_digest_base_s_bubblebabble): Ditto for
-	  Digest::Base::bubblebabble().
-
-Sat Oct 14 00:55:08 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bcc32/Makefile.sub (post-install-ext): no longer needed.
-
-	* bcc32/configure.bat: get rid of a quirk of Borland make, which
-	  sets empty macro in command line to "1".
-
-Fri Oct 13 22:49:02 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: updated based on date2 3.9.5.
-
-Fri Oct 13 21:00:01 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest.rb (Digest): Try to auto-load non-standard
-	  digest modules when a specified digest class is missing.
-
-	* ext/digest/lib/digest.rb: Define Digest(name) for ease of
-	  dynamically selecting a hashing algorithm.
-
-Fri Oct 13 20:53:37 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (Init_digest): Digest::Base.new() does no
-	  longer take an initial string to feed.  This change allows
-	  subclasses to take hashing parameters.  A statement such as
-	  ``md = Digest::MD5.new(s)'' can be easily rewritten as
-	  ``md = Digest::MD5.new << s'' or
-	  ``md = Digest::MD5.new.update(s)''.
-
-Fri Oct 13 20:51:55 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c, ext/digest/md5/md5init.c,
-	  ext/digest/rmd160/rmd160init.c, ext/digest/sha1/sha1init.c,
-	  ext/digest/sha2/sha2init.c: Add RDoc documentation.
-
-	* ext/digest/digest.txt, ext/digest/digest.txt.ja: Removed in
-	  favor of embedded RDoc documentation.
-
-Fri Oct 13 20:38:12 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/bubblebabble, ext/digest/digest.c: Rip BubbleBabble
-	  support out of the base class and have a separate module named
-	  digest/bubblebabble.
-
-Fri Oct 13 19:53:59 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_equal): Again, should call
-	  digest() of a subclass instead of the one defined in the base
-	  class.
-
-Fri Oct 13 18:19:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c: Class#inherited RDoc added.  a patch from Daniel
-	  Berger <djberg96 at gmail.com>  [ruby-core:08942]
-
-Fri Oct 13 02:42:00 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_equal): Should call digest()
-	  of a subclass instead of the one defined in the base class.
-
-Fri Oct 13 02:30:12 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (Collector::Dir#collect): prepend
-	  base directory to load path.
-
-	* lib/test/unit/collector/dir.rb (Collector::Dir#collect_file): should
-	  use the given File-like interface, but not File directly.
-
-	* test/testunit/collector/test_dir.rb (TestDir::FileSystem): implement
-	  File-like methods correctly.
-
-Fri Oct 13 01:48:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/date.rb (Date::self.complete_hash): need to check if g is
-	  nil before dereference.  [ruby-core:09116]
-
-Fri Oct 13 01:05:58 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_partition): RDoc update.  a patch from
-	  Mauricio Fernandez <mfp at acm.org>.  [ruby-core:09160]
-
-	* hash.c (rb_hash_compare_by_id): ditto.
-
-Fri Oct 13 00:34:26 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_cvar_defined): wrong id check.  a patch from
-	  Mauricio Fernandez <mfp at acm.org>.  [ruby-core:09158]
-
-	* object.c (rb_mod_cvar_get): typo fixed.  [ruby-core:09168]
-
-	* object.c (rb_mod_cvar_set): ditto.
-
-Thu Oct 12 22:58:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_compare_by_id): somehow we lost renaming from
-	  Hash#identical.  [ruby-core:09163]
-
-Thu Oct 12 18:25:40 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/tk/tkutil/tkutil.c (cbsubst_table_setup): need to handle new
-	  character literal (1 char string).
-
-	* lib/mkmf.rb: shut up some warnings from tk's extconf.rb.
-
-Thu Oct 12 02:15:24 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest/hmac.rb: Make use of String#bytes.
-
-Thu Oct 12 02:12:31 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (get_digest_base_metadata): Use an instance
-	  variable of a class object instead of a class variable for
-	  metadata.  This change is only crucial for ruby 1.8 because
-	  class variables are inherited to subclasses prior to 1.9, but
-	  applying it also to 1.9 will assure compatibilities.
-
-	* ext/digest/md5/md5init.c (Init_md5): Ditto.
-
-	* ext/digest/rmd160/rmd160init.c (Init_rmd160): Ditto.
-
-	* ext/digest/sha1/sha1init.c (Init_sha1): Ditto.
-
-	* ext/digest/sha2/sha2init.c (Init_sha2): Ditto.
-
-Wed Oct 11 21:36:47 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_alloc,
-	  rb_digest_base_equal): Simplify the equality check and just
-	  compare resulted digests since state-level equality should
-	  not be so significant.
-
-	* ext/digest/digest.h: Ditto.
-
-	* ext/digest/*/*.[ch]: Ditto.
-
-Wed Oct 11 17:11:03 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_obj_define_method): add half boiled RDoc document.
-
-Wed Oct 11 16:57:46 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_replace): should shift lfree pointer before
-	  calling xfree.
-
-Wed Oct 11 15:07:42 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest/hmac.rb: Add digest/hmac, which implements
-	  HMAC keyed-hashing algorithm.
-
-Wed Oct 11 15:03:55 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_reset): Do not make
-	  recursive calls, but call initialize() when reset() is not
-	  defined in a subclass.
-
-Wed Oct 11 14:56:10 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/digest/sha1/sha1ossl.h: libssl 0.9.8c-3 defines no
-	  SHA_BLOCK_LENGTH.
-
-Wed Oct 11 14:03:31 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_reset, Init_digest): Add
-	  Digest::Base#reset.
-
-	* ext/digest/digest.h: Update the header comment.
-
-	* ext/digest/md5/md5ossl.h, ext/digest/md5/md5init.c (Init_md5):
-	  Define DIGEST_LENGTH and BLOCK_LENGTH.
-
-	* ext/digest/rmd160/rmd160init.c (Init_rmd160): Ditto.
-
-	* ext/digest/sha1/sha1init.c (Init_sha1): Ditto.
-
-	* ext/digest/sha2/sha2init.c (Init_sha2): Ditto.
-
-	* ext/digest/depend, ext/digest/extconf.rb: Use $INSTALLFILES
-	  rather than adding make targets. [Pointed out by: nobu]
-
-Tue Oct 10 16:39:08 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (hexdigest_str_new, bubblebabble_str_new):
-	  Perform StringValue() checks properly.
-
-Tue Oct 10 13:21:21 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha1/depend, ext/digest/sha2/depend: Remove obsolete
-	  dependencies.
-
-Mon Oct  9 23:46:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/parsedate.rb: documentation patch from Konrad Meyer
-	  <konrad.meyer@gmail.com>.  [ruby-doc:1238]
-
-	* lib/open3.rb, lib/ping.rb: ditto.
-
-Mon Oct  9 23:40:58 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb, lib/fileutils.rb, lib/mkmf.rb, lib/optparse.rb,
-	  lib/shellwords.rb: get rid of shadowing outer local variable.
-
-Mon Oct  9 22:56:12 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/encoding.rb (REXML::Encoding::check_encoding): spaces
-	  are allowed around equal sign.  [ruby-core:09032]
-
-	* lib/rexml/parsers/baseparser.rb (REXML::Parsers::BaseParser): ditto.
-
-Mon Oct  9 01:56:34 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_obj_define_method): add new method
-	  Kernel#define_singleton_method.  [ruby-list:42851]
-
-Sat Oct  7 23:53:08 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_scan): small documentation fix.
-	  [ruby-core:09007]
-
-Sat Oct  7 23:44:33 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_rshift): a bug in right shift of negative
-	  bignums.  [ruby-core:09020]
-
-Sat Oct  7 23:33:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (formal_assign): packed post splat arguments may conflict
-	  with normal arguments.  [ruby-core:09021]
-
-	* eval.c (rb_call0): ditto.
-
-Sat Oct  7 11:53:04 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_mod_initialize): since module_eval no longer passes
-	  self, use module_exec instead.  fixed: [ruby-dev:29637]
-
-Sat Oct  7 00:27:58 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_include_module): remove unnecessary check.
-	  [ruby-talk:218402]
-
-Fri Oct  6 15:19:59 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/depend: Fix header installation when the build
-	  directory is different from srcdir. [Pointed out by: eban]
-
-Fri Oct  6 09:56:31 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32,wince}/Makefile.sub (config.status): shouldn't use
-	  copy command instead of install. use -run install.
-
-Fri Oct  6 06:53:46 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): small refactoring.
-
-	* parse.y (bparam_item): fixed bugs in handling parenthesized LHS.
-
-Fri Oct  6 04:47:07 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/depend: Install digest.h.
-
-Fri Oct  6 04:27:40 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/md5.rb, ext/digest/lib/sha1.rb: Remove those
-	  compatibility stub libraries.
-
-	* sample/openssl/c_rehash.rb: Use digest/md5 instead of obsolete md5.
-
-Fri Oct  6 04:09:51 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c: Make hexdigest() always call digest() internally.
-
-	* ext/digest/digest.c: Add bubblebabble().
-
-Fri Oct  6 02:38:42 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c: Allow subclassing in Ruby.
-
-Fri Oct  6 02:06:10 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (hexdigest_str_new): Add a string size check.
-
-Thu Oct  5 19:28:35 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.[ch]: Since the argument order of
-	  hash_final_func_t was inconsistent with others, change it and
-	  rename to hash_finish_func_t to avoid confusion.
-
-	* ext/digest/digest.[ch]: Remove and eliminate the use of
-	  hash_end_func_t.  Implement hexdigest conversion in the base
-	  class.
-
-	* ext/digest/md5/md5.c, ext/digest/md5/md5.h,
-	  ext/digest/md5/md5init.c, ext/digest/md5/md5ossl.c,
-	  ext/digest/md5/md5ossl.h: Remove MD5_End() and change
-	  MD5_Final() to MD5_Finish().
-
-	* ext/digest/rmd160/depend, ext/digest/rmd160/extconf.rb,
-	  ext/digest/rmd160/rmd160.c, ext/digest/rmd160/rmd160.h,
-	  ext/digest/rmd160/rmd160hl.c, ext/digest/rmd160/rmd160init.c,
-	  ext/digest/rmd160/rmd160ossl.c, ext/digest/rmd160/rmd160ossl.h:
-	  Remove unused functions RMD160_End(), RMD160_File(),
-	  RMD160_Data() and change RMD160_Final() to RMD160_Finish().
-
-	* ext/digest/sha1/extconf.rb, ext/digest/sha1/sha1.c,
-	  ext/digest/sha1/sha1.h, ext/digest/sha1/sha1hl.c,
-	  ext/digest/sha1/sha1init.c, ext/digest/sha1/sha1ossl.c,
-	  ext/digest/sha1/sha1ossl.h: Likewise.
-
-	* ext/digest/sha2/extconf.rb, ext/digest/sha2/sha2.c,
-	  ext/digest/sha2/sha2.h, ext/digest/sha2/sha2hl.c,
-	  ext/digest/sha2/sha2init.c: Likewise.
-
-Wed Oct  4 18:47:25 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/*: bugfix and update
-	  (see ext/tk/ChangeLog.tkextlib).
-
-Wed Oct  4 17:25:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): check protected visibility based on real self,
-	  not ruby_frame->self.  [ruby-talk:217822]
-
-Wed Oct  4 15:46:32 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (block_param): should interpret single parenthesized
-	  left hand side expression.
-
-Wed Oct  4 08:52:30 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/optparse/test_getopts.rb: changed the class name of test case
-	  to get rid of conflict with test_optparse.rb.
-
-Tue Oct  3 21:04:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (dyna_in_block): inline using macro.
-
-	* parse.y (mlhs): simplifies the rule a bit.
-
-	* parse.y (block_param): restrict block parameters to be local
-	  variables only.
-
-	* test/ruby/test_iterator.rb (TestIterator::test_nested_iterator):
-	  update test suite to conform the last change.
-
-Tue Oct  3 02:31:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (splat_value): use "to_splat" instead of "to_ary" to
-	  prepare splat values as an array.
-
-	* array.c (Init_Array): define to_splat.
-
-	* range.c (range_to_splat): new method.
-
-	* enumerator.c (enumerator_to_splat): ditto.
-
-Tue Oct  3 01:36:47 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_lines): returns an Enumerator instead of an
-	  array of lines.
-
-	* string.c (rb_str_bytes): a new method.
-
-Mon Oct  2 23:47:55 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner::COLLECTORS):
-	  base directory should be lower precedence.  fixed: [ruby-dev:29622]
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner#options): typo.
-
-	* lib/test/unit/collector/dir.rb (Test::Unit::Collector::Dir#collect_file):
-	  load expanded path.  fixed: [ruby-dev:29621]
-
-Mon Oct  2 15:47:55 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: batfile should be CRLF'ed.
-
-Mon Oct  2 01:24:26 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (test-all): separate directory where running test cases
-	  from source tree.
-
-	* lib/test/unit/autorunner.rb (options): added --basedir, --workdir
-	  and --load-path options.
-
-	* lib/test/unit/collector/dir.rb (recursive_collect, collect_file):
-	  base directory support.
-
-Sun Oct  1 23:56:52 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk, ext/extmk.rb, win{32,ce}/Makefile.in: keep
-	  LIBRUBY_SO unless need to be removed.
-
-Sun Oct  1 23:12:19 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#make_switch): pass arguments directly.
-
-Sat Sep 30 15:11:26 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: updated based on date2 3.9.4.
-
-Fri Sep 29 13:18:24 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest.rb (Digest): Require digest.so and fix the
-	  breakage.  Point out by NAKAMURA Usaku in [ruby-dev:29619].
-
-Fri Sep 29 12:11:04 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* jcode.rb (succ!): call original succ! if $KCODE == 'n'.
-	  fixed: [ruby-talk:216845]
-
-Fri Sep 29 11:43:40 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_func): revert fallback checking undeclared function.
-	  fixed: [ruby-core:08949]
-
-Fri Sep 29 09:56:56 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: extout is needed for also clean.
-	  fixed: [ruby-core:08944]
-
-	* lib/optparse.rb (OptionParser::Switch#conv_arg): unsplat by
-	  Proc#call if no conversion is given.
-
-Thu Sep 28 23:59:31 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* node.h (struct thread): declare win32_exception_list on cygwin and
-	  win32 regardless if it is implemented.  Provisional fix for
-	  [ruby-core:08917].
-
-Thu Sep 28 20:49:20 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/tmpdir.rb: use return value of getdir.call for length.
-
-Wed Sep 27 22:08:16 2006  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/md5/md5init.c (Init_md5): Now that we have digest.rb,
-	  require "digest" rather than "digest.so".
-
-	* ext/digest/rmd160/rmd160init.c (Init_rmd160): Ditto.
-
-	* ext/digest/sha1/sha1init.c (Init_sha1): Ditto.
-
-	* ext/digest/sha2/sha2init.c (Init_sha2): Ditto.
-
-Wed Sep 27 21:21:08 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_startwith): rename startwith? to start_with?,
-	  endwith? to endwith?, respectively.  [ruby-talk:216685]
-
-Wed Sep 27 13:29:01 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::TagMaker::nOE_element_def): replace to_s by
-	  join.  some other methods as well.  [ruby-dev:29613]
-
-Wed Sep 27 01:04:49 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_func): check function pointer first and macro next.
-
-	* lib/mkmf.rb (have_type): simplified with typedef and sizeof.
-
-Wed Sep 27 00:08:12 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_shift): shift/unshift performance boost patch,
-	  based on the patch from Eric Mahurin <eric_mahurin at yahoo.com>.
-	  [ruby-core:05861]
-
-	* array.c (rb_ary_unshift_m): ditto.
-
-	* array.c (ary_make_shared): ditto.
-
-	* array.c (RESIZE_CAPA): ditto.
-
-	* array.c (rb_ary_free): new function to free memory.  code moved
-	  from gc.c.
-
-	* string.c (rb_str_free): ditto.
-
-Tue Sep 26 23:57:03 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#getopts): use strings as key.
-	  fixed: [ruby-dev:29614]
-
-Tue Sep 26 15:29:55 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {win32,wince}/Makefile.sub (CPP): check predefined value.
-
-Tue Sep 26 07:55:16 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_shift): should not move memory region if array
-	  body is shared.  a patch from Kent Sibilev <ksruby at gmail.com>.
-	  [ruby-core:08922]
-
-Mon Sep 25 23:10:46 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (rb_push_glob): need not to check by FilePathValue().
-	  [ruby-dev:29599]
-
-	* dir.c (dir_globs): ditto.
-
-Mon Sep 25 22:26:26 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_path_end): skip root directory.  fixed: [ruby-core:08913]
-
-	* lib/mkmf.rb (rm_f): get rid of NUL.
-
-	* lib/mkmf.rb (init_mkmf): set default $LDFLAGS.  Patch by Michal
-	  Suchanek <hramrach at centrum.cz>.  [ruby-talk:216256]
-
-Mon Sep 25 15:06:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/test.rb: "print nil" now prints empty string.
-
-	* test/ruby/test_system.rb (TestSystem::test_system): ditto.
-
-Mon Sep 25 11:26:25 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (recursive_hash): remove unused local variable.
-
-	* parse.y (parser_yylex): ditto.
-
-	* parse.y (rb_gc_mark_symbols): fix unmatched prototype .
-
-	* file.c (rb_get_path): check NUL byte in the path string.
-
-Mon Sep 25 08:14:43 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_shift): should clear shifting top element.
-	  [ruby-talk:216055]
-
-	* array.c (rb_ary_shift): avoid creating shared object if array
-	  size is small.
-
-Mon Sep 25 08:11:35 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c (rb_f_rand): RDoc typo fix.  a patch from Frederick
-	  Cheung <fred at 82ask.com>.  [ruby-talk:216047]
-
-Sun Sep 24 21:19:24 2006  Guy Decoux  <ts@moulon.inra.fr>
-
-	* gc.c (gc_mark_children): NODE_POSTEXE holds Ruby VALUE.
-	  [ruby-core:08912]
-
-Sun Sep 24 22:28:20 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* runruby.rb: extension library scripts moved into common directory.
-
-Sun Sep 24 12:10:04 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: updated based on date2 3.9.3.
-
-Sun Sep 24 06:55:36 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_print): no special handling for nil as well as puts.
-	  fixed: [ruby-dev:29586]
-
-Sun Sep 24 06:25:53 2006  why the lucky stiff  <why@ruby-lang.org>
-
-	* eval.c (rb_thread_save_context, rb_thread_restore_context):
-	  sandbox hook to save and restore sandbox state.
-
-	* eval.c (thread_no_ensure): added THREAD_NO_ENSURE thread flag.
-
-	* eval.c (rb_thread_kill_bang): Thread#kill! uses the above flag
-	  to circumvent ensure, in order to prevent endless loops.
-	  contributed by MenTaLguY. [ruby-core:08768]
-
-	* eval.c (rb_thread_kill): fix Thread#kill docs, which returns
-	  the thread object in all cases.
-
-	* node.h: expose the rb_jmpbuf_t and rb_thread_t structs, along
-	  with the thread flags.  used by the sandbox extension.
-
-	* ruby.h: extern rb_eThreadError, so sandbox can swap it.
-
-Sat Sep 23 21:34:15 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::read_multipart): CGI content
-	  may be empty.  a patch from Jamis Buck <jamis at 37signals.com>.
-
-Sat Sep 23 20:54:28 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* oniguruma.h: Version 4.4.4
-
-	* regexec.c: ditto.
-
-	* regcomp.c ditto.
-
-Sat Sep 23 08:35:53 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc/ri/ri_options.rb: prevent NameError.  [ruby-dev:29597]
-
-Sat Sep 23 01:02:57 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: updated based on date2 3.9.2.
-
-Fri Sep 22 18:07:17 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_partition): no need to call rb_call_super(),
-	  since String is no longer includes Enumerable.
-
-Fri Sep 22 17:33:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_eql): new method to be used by Hash.
-
-	* hash.c (rb_hash_hash): ditto.
-
-Fri Sep 22 06:53:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_hash): use rb_memhash().
-
-	* numeric.c (flo_hash): simplified.  klass need not to affect
-	  resulting hash value.
-
-Fri Sep 22 02:06:26 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .cvsignore: ignore timestamp files and installed list file.
-
-Fri Sep 22 01:36:34 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb: include FileUtils unconditionally.
-
-Fri Sep 22 00:36:05 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (Init_Numeric): fix_odd_p and fix_even_p are for Fixnum.
-	  patch from Ondrej Bilka <neleai at seznam.cz>.  [ruby-core:08904]
-
-Thu Sep 21 22:56:20 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (no-install): not install rdoc actually.
-
-	* common.mk (install-doc, no-install-doc): use instruby.rb.
-
-	* instruby.rb: rdoc installation.
-
-	* ext/extmk.rb: expand ruby executable names.
-
-Thu Sep 21 20:19:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_new3): embed shorter strings more eagerly.
-
-Thu Sep 21 17:44:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_startwith): a new method to check if a string
-	  starts with given prefix.
-
-	* string.c (rb_str_endwith): the opposite of String#startwith?.
-
-Thu Sep 21 16:29:02 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* rubytest.rb: use each_line instead of each.
-
-Thu Sep 21 15:06:24 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_odd_p): a new method to check even or odd.
-	  [RCR#337]
-
-	* numeric.c (int_even_p): ditto.
-
-Thu Sep 21 13:55:07 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getpwuid): uid integer should be wrapped in
-	  uid_t value.  [ruby-core:08897]
-
-	* ext/etc/etc.c (etc_getpwuid): uid_t may be bigger than plain
-	  'int' type.
-
-Thu Sep 21 10:07:09 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_partition): RDoc typo fixed.  [ruby-core:08898]
-
-	* string.c (rb_str_rpartition): fixed separation seek bug.
-
-Thu Sep 21 09:38:12 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_lines): new method to split a string into lines.
-
-	* string.c (Init_String): Strings are no longer Enumerable.  use
-	  each_line or lines method explicitly.
-
-	* string.c (Init_String): remove each method. use each_lines.
-
-Wed Sep 20 23:17:41 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (pre-install-doc): create data directory before install.
-
-	* lib/mkmf.rb (dir_re): fixed typo.
-
-	* lib/mkmf.rb (install_dirs): remove extra slash.
-
-Wed Sep 20 22:41:45 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_mul): typo again.  patch from Tadashi Saito
-	  <shiba at mail2.accsnet.ne.jp>.  fixed: [ruby-core:08893]
-
-Wed Sep 20 19:32:06 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_partition): a new method to separate the string
-	  by a separator.  taken from Python 2.5.
-
-	* string.c (rb_str_rpartition): ditto.
-
-Wed Sep 20 09:49:40 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32,wince}/Makefile.sub (INSTALLED_LIST): need to define
-	  this macro to install.
-
-Wed Sep 20 09:43:10 2006  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: allow extra spaces in responses.
-	  Thanks, Tom Soderlund.
-
-Wed Sep 20 09:25:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/gdbm/gdbm.c: add RDoc documentation. a patch from Peter
-	  Adolphs <futzilogik at users dot sourceforge dot net>.
-	  [ruby-doc:1223]
-
-Tue Sep 19 00:42:15 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_obj_ivar_defined, rb_mod_cvar_defined): new methods,
-	  Kernel#instance_variable_defined? and Module#class_variable_defined?.
-	  [ruby-dev:29587]
-
-	* lib/date/format.rb (Date::Bag#method_missing): use new method,
-	  instance_variable_defined? to check if an instance variable is
-	  defined.  fixed: [ruby-dev:29554]
-	  -- This didn't fix anything.
-
-Tue Sep 19 00:07:17 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_eql): fail early to gain performance.
-
-	* string.c (sym_hash): cache hash value in aux.shared if possible.
-
-	* gc.c (rb_obj_id): no need to treat symbols specially.
-
-	* lib/fileutils.rb (FileUtils::FileUtils): singleton_methods() no
-	  longer return an array of strings, but of symbols.
-
-	* lib/delegate.rb (DelegateClass): ditto.
-
-Mon Sep 18 15:29:21 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_s_glob): restore GC protection volatile variable.
-	  [ruby-dev:29588]
-
-	* re.c (rb_reg_regcomp): ditto.
-
-Mon Sep 18 12:16:48 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_mul): get rid of shift overflow.
-
-Mon Sep 18 10:47:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_s_glob): remove unused variable.
-
-	* math.c (math_log): ditto.
-
-	* re.c (rb_reg_regcomp): ditto.
-
-	* eval.c (break_jump): ditto.
-
-	* eval.c (rb_thread_yield_0): remove unused function.
-
-Sun Sep 17 23:44:58 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc#document): scan only files modified
-	  after the previous generation.
-
-Sun Sep 17 17:42:13 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (install-doc): reverted.
-
-	* instruby.rb: stores file name list without destdir prefix.
-
-	* lib/rdoc/generators/ri_generator.rb: do not chdir twice.
-
-Sun Sep 17 10:42:10 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_mul): fixed typo.  fixed: [ruby-core:08885]
-
-Sat Sep 16 19:47:16 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* README.EXT: should mention new macros: RSTRING_PTR, RSTRING_LEN,
-	  RARRAY_PTR, RARRAY_LEN.
-
-	* README.EXT.ja: ditto.
-
-Sat Sep 16 16:39:23 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.in, instruby.rb, ext/extmk.rb, lib/mkmf.rb:
-	  use instruby.rb to install extensions instead of ext/extmk.rb.
-
-	* instruby.rb: store installed list into the file.
-
-	* ext/dbm/extconf.rb: allow multiple candidates for dbm-type.
-
-	* ext/io/wait/extconf.rb: suspicious checking_for.
-
-	* ext/pty/pty.c (establishShell): parent pid is not used.
-
-	* ext/pty/pty.c (freeDevice): not used.
-
-	* lib/mkmf.rb (checking_for): improved the messages.
-
-Sat Sep 16 11:03:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_shared_first): should create embedded copies
-	  instead of sharing memory region for smaller arrays.
-
-Sat Sep 16 09:37:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (inspect_struct): do not display a class name for
-	  anonymous struct.  The member fields are sufficient.
-
-Fri Sep 15 20:22:15 2006  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-8/nkf.c: imported nkf 2.0.8 rev.110.
-	  * Fix: check_bom cuts \xfe\xff\xXX\xXX of UTF-32LE.
-	  * Add support --ic=UTF-32.
-	  * Fix: can't guess UTF-16 and UTF-32.
-	  * Fix: can't decode beyond BMP of UTF-16LE.
-
-	* ext/nkf/nkf.c (guess): Support UTF-32.
-
-	* ext/nkf/lib/kconv.rb (kconv): Support UTF-32.
-
-	* ext/nkf/lib/kconv.rb (to_utf32): new method.
-
-Fri Sep 15 05:23:24 2006  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-8/nkf.c: imported nkf 2.0.8 2006-09-15.
-	  Add support for U+10000 - U+10FFFF
-	  Add support UTF-32
-
-Fri Sep 15 00:03:07 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/lib/digest.rb (Digest::Base.file): open a file in binary
-	  mode.  suggested by Kazuhiro NISHIYAMA.  [ruby-dev:29579]
-
-Thu Sep 14 17:21:07 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_mul): avoid bignum multiplication as far as
-	  possible.  a patch from Ondrej Bilka <neleai at seznam.cz>.
-	  [ruby-core:08825]
-
-Thu Sep 14 16:34:55 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): allow zero length symbols.
-	  [ruby-core:08861]
-
-Thu Sep 14 16:11:15 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): raise SecurityError only when $SAFE
-	  level is greater than zero.  [ruby-core:08862]
-
-	* parse.y (rb_interned_p): new function to check if a string is
-	  already interned.
-
-	* string.c (str_to_id): use rb_str_intern().
-
-Thu Sep 14 14:37:45 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/lib/digest.rb (Digest::Base.file): new method.
-	  [ruby-dev:29572]
-
-Thu Sep 14 08:30:02 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/digest.c (rb_digest_base_inspect): new method.
-	  [ruby-dev:29573]
-
-Thu Sep 14 01:13:56 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (ruby_init_stack): decrease "stack level too deep" in Windows.
-	  [ruby-dev:29569]
-
-Thu Sep 14 01:02:25 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/lib/digest.rb: new file.
-	  [ruby-dev:28689]
-
-Wed Sep 13 18:43:05 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* README.EXT: English adjustment.  [ruby-core:08851] and
-	  [ruby-core:08852]
-
-Wed Sep 13 18:25:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): better here-doc support.
-	  a patch from Marshall T. Vandegrift <llasram at gmail.com>.
-	  [ruby-core:08804]
-
-Wed Sep 13 16:43:36 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): prohibit interning tainted string.
-
-Wed Sep 13 01:14:02 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#getopts): works with pre-registered
-	  options.  [ruby-core:08826]
-
-Tue Sep 12 03:58:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_compare_by_identity): rename Hash#identical to
-	  Hash#compare_by_identity.
-
-Mon Sep 11 16:52:37 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_identical): a new method to make a hash to
-	  compare keys by their identity.
-
-	* hash.c (rb_hash_identical_p): new method to tell if a hash is
-	  identical or not.
-
-	* st.c (st_numcmp, st_numhash): export hash type functions.
-
-Mon Sep 11 11:42:21 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/source.rb (REXML::Source::encoding): should not
-	  convert the body twice.  [ruby-core:08828]
-
-	* lib/rexml/encoding.rb (REXML::Encoding::encoding):
-	  Encoding#encoding= to return boolean value to tell if the body
-	  is really converted or not.
-
-	* lib/rexml/encoding.rb (REXML::Encoding::encoding): Specific
-	  conversion library (e.g. rexml/encodings/UTF-16.rb) to have
-	  higher preceding.
-
-	* lib/rexml/encodings/UTF-16.rb (REXML::Encoding::decode_utf16):
-	  UTF-16#decode_utf16 should work strings without BOM.
-
-Mon Sep 11 07:39:44 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_equal): "sym == str" should compare them as
-	  strings.  [ruby-dev:29554]
-
-Sun Sep 10 22:59:43 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (parse_args): remove splat.
-
-Sun Sep 10 20:25:30 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: updated based on date2 3.9.1.
-
-Sun Sep 10 09:41:29 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c: ISPRINT() needs ctype.h
-
-Sun Sep 10 09:19:47 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb: splat parsed arguments.
-
-Tue Jan 10 09:18:03 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_require_safe): prevent extension from loading twice.
-	  fixed: [ruby-dev:29523]
-
-Sat Sep  9 23:55:28 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_f_test): test(0) should not have any special
-	  meaning.  [ruby-dev:29425]
-
-	* file.c (rb_f_test): properer error message.
-
-Sat Sep  9 14:08:38 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/test/unit/testcase.rb (Test::Unit::TestCase#run): Rescue
-	  Exception in Test::Unit::TestCase#run.  [ruby-core:08783]
-
-Sat Sep  9 04:55:59 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pstore.rb: open all in binary mode, and get rid of the quirk of
-	  msvcrt.  fixed: [ruby-dev:29518]
-
-Sat Sep  9 04:47:45 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (MINIRUBY): append MINIRUBYOPT.
-
-	* mkconfig.rb, ext/extmk.rb, lib/mkmf.rb, win32/mkexports.rb: suppress
-	  warnings with $VERBOSE.
-
-	* win32/resource.rb: only file which has more than one icon is DLL.
-
-Fri Sep  8 16:53:30 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_alloc): should allocate a String object, even when
-	  asked to allocate a Symbol object.  [ruby-dev:29529]
-
-Fri Sep  8 16:36:27 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): follow Array#to_s.
-
-	* lib/mkmf.rb (create_makefile): ditto.
-
-	* win32/resource.rb: ditto.
-
-Fri Sep  8 10:00:12 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cookie.rb (WEBrick::Cookie.parse_set_cookies): new
-	  method to parse multiple cookies per Set-Cookie header.
-	  Thanks to Aaron Patterson <aaron_patterson at speakeasy.net>.
-	  [ruby-core:08802]
-
-Fri Sep  8 08:59:30 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub, win32/configure.bat win32/setup.mak: program
-	  name transform.
-
-Fri Sep  8 08:25:39 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb: suppress `assigning void value' warning.
-
-Fri Sep  8 01:16:34 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (Init_Array): #to_s to be an alias to #inspect.
-	  [ruby-dev:29520]
-
-	* hash.c (Init_Hash): ditto.
-
-	* lib/mkmf.rb (create_makefile): replace "print array" by
-	  "print *array".
-
-	* mkconfig.rb: ditto.
-
-Thu Sep  7 21:02:56 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (nil_to_s): returns the empty string again.
-	  [ruby-dev:29520]
-
-Thu Sep  7 23:27:05 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (path_check_0, fpath_check): disable path check on cygwin.
-	  [ruby-talk:213074]
-
-Thu Sep  7 02:03:45 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_to_s): adopt new date format using digits
-	  e.g. "2006-09-07 02:03:45 +9000".
-
-Thu Sep  7 01:54:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_equal): override.  check equivalence.
-
-Wed Sep  6 13:25:04 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (symbols_i): need to initialize early-created symbols.
-	  [ruby-dev:29496]
-
-Wed Sep  6 12:05:19 2006  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (Kconv::toeuc): remove -m0 [ruby-dev:29505]
-
-Tue Sep  5 22:06:43 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/tcltklib.c: use rb_ary_new3() since RARRAY_LEN() is not l-value.
-
-	* ext/tk/tkutil/tkutil.c: use RARRAY_PTR() and RARRAY_LEN() and etc.
-	  fixed: [ruby-dev:29473]
-
-Tue Sep  5 06:47:22 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_to_s): variable declaration after an execution
-	  statement.
-
-Tue Sep  5 05:49:41 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (path_check_0): check if sticky bit is set on parent
-	  directories for executable path.  fixed: [ruby-dev:29415]
-
-Tue Sep  5 05:03:46 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_plus): addition in Fixnum will never overflow
-	  long.  a patch from Ondrej Bilka <neleai at seznam.cz>.
-	  [ruby-core:08794]
-
-	* numeric.c (fix_minus): ditto.
-
-	* bignum.c (rb_big_pow): eagerly truncate resulting bignum.
-	  [ruby-core:08794]
-
-Mon Sep  4 23:15:34 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_to_s): make it conform to RFC2822 date format.
-	  [ruby-dev:29467]
-
-Mon Sep  4 21:43:57 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dbm/extconf.rb: create makefile according to the result of check
-	  for dbm header.  fixed: [ruby-dev:29445]
-
-Mon Sep  4 21:39:42 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: updated based on date2 3.9.
-
-Mon Sep  4 21:14:20 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_strftime): include nul character.  fixed: [ruby-dev:29422]
-
-Mon Sep  4 16:39:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::out): specify -x option for nkf.
-
-	* lib/cgi.rb (CGI::out): should not convert utf-8 implicitly using
-	  NKF.  it is too Japanese centric.
-
-Mon Sep  4 14:23:10 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/extconf.rb (db_check): remove debug print.
-
-Mon Sep  4 06:46:08 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (rb_id2sym): intern if id is attrset_id.
-	  [ruby-dev:29420] [ruby-dev:29447]
-
-Mon Sep  4 01:25:16 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_local_variables): list symbols.
-
-	* struct.c (rb_struct_s_members_m): ditto.
-
-	* variable.c (ivar_i): ditto.
-
-	* variable.c (gvar_i): ditto.
-
-	* variable.c (cv_i): ditto.
-
-Sun Sep  3 20:47:02 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.h (SYMBOL_P): Qnil and Qfalse are not Symbol.
-
-Sun Sep  3 15:32:44 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: get rid of nil.to_s.
-
-Sun Sep  3 06:24:38 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (ruby_connect): sockerrlen should be socklen_t.
-
-Sun Sep  3 04:40:42 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: check arpa/inet.h for ntohs.
-
-	* ext/socket/socket.c: include arpa/inet.h if available.
-
-Sat Sep  2 23:59:58 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (Init_String): undef Symbol#new.
-
-	* struct.c (rb_struct_s_def): wrong symbol detection.
-
-Sat Sep  2 23:59:37 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_to_id): a bug caused by premature optimization.
-
-Sat Sep  2 23:53:28 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): move symbol related code to string.c
-
-	* string.c (Init_String): Symbol as subclass of String.
-
-	* parse.y (rb_intern2): handle symbol as strings.
-
-	* string.c (str_new): substring of symbols are mere strings, not
-	  symbols.
-
-Sat Sep  2 23:37:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (struct RArray): embed small arrays.
-	  (RARRAY_LEN): defined for accessing array members.
-	  (RARRAY_PTR): ditto.
-
-	* array.c: use RARRAY_LEN and RARRAY_PTR.
-
-Sat Sep  2 13:23:01 2006  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (ia64.o): use the compiler driver to assemble ia64.s
-	  to use appropriate ABI.
-
-Sat Sep  2 12:06:35 2006  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/generator.rb (SOAP::SOAPGenerator#encode_tag): do not dump
-	  XML attribute which value is nil.  value "" and nil both were dumped
-	  as 'attr="value"'.  [ruby-dev:29395]
-
-Sat Sep  2 11:47:58 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should handle when in else clause.  a patch
-	  from Eric Hodel <drbrain at segment7.net>.  [ruby-core:08662]
-
-	* parse.y (primary): wrap with NODE_CASE.  [ruby-core:08663]
-
-Sat Sep  2 12:00:32 2006  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb (CSV::IOReader#initialize): use String#[](pos, len)
-	  instead of String#[](idx) to check utf BOM.  follows String#[](idx)
-	  behavior change of 1.9.
-
-Sat Sep  2 11:47:58 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should handle when in else clause.  a patch
-	  from Eric Hodel <drbrain at segment7.net>.  [ruby-core:08662]
-
-	* parse.y (primary): wrap with NODE_CASE.  [ruby-core:08663]
-
-Fri Sep  1 22:07:04 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (RSTRING_EMBED_LEN_MASK): uses 5 bits to support 64bit
-	  environment.  [ruby-dev:29369]
-
-Fri Sep  1 22:02:08 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_resize): should copy embedded string to
-	  malloc'ed buffer.  a patch from <nobu at ruby-lang.org> in
-	  [ruby-dev:29369].  fixed: [ruby-dev:29368]
-
-	* string.c (rb_str_ord): use %ld specifier since STRING_LEN() is a
-	  long.  [ruby-dev:29369]
-
-Fri Sep  1 21:41:12 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (socks_init): typo fixed.  a patch from Sven
-	  Klemm <sven at c3d2.de>.  [ruby-core:08770]
-
-Fri Sep  1 14:22:42 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle): RDoc fixed.
-
-Fri Sep  1 13:52:57 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/font.rb: TkFont#current_configinfo() doesn't work
-	  on Tcl/Tk8.x.
-
-Fri Sep  1 09:32:55 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex::getc): should not push nil into
-	  reading buffer (@readed).  reported in
-	  <http://jarp.does.notwork.org/diary/200608c.html#200608311>.
-
-Thu Aug 31 23:59:03 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): follow nil.to_s.
-
-Thu Aug 31 20:50:46 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): follow nil.to_s.
-
-	* win32/resource.rb: ditto.
-
-Thu Aug 31 20:21:47 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (search_required): use RSTRING_PTR and RSTRING_STR.
-
-	* file.c (test_identical, rb_file_s_truncate): ditto.
-
-	* io.c (pipe_open, rb_io_reopen): ditto.
-
-	* object.c (nil_plus): ditto.
-
-	* process.c (proc_spawn_n, rb_spawn): ditto.
-
-	* util.c (ruby_add_suffix): ditto.
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): ditto.
-
-	* ext/dl/cptr.c (rb_dlptr_s_to_ptr): ditto.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509extfactory_create_ext): ditto.
-
-	* ext/tk/stubs.c, ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: ditto.
-
-	* ext/win32ole/win32ole.c (ole_val2olevariantdata): ditto.
-
-Thu Aug 31 18:23:00 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (struct RString): embed small strings.
-	  (RSTRING_LEN): defined for accessing string members.
-	  (RSTRING_PTR): ditto.
-
-	* string.c: use RSTRING_LEN and RSTRING_PTR.
-
-Thu Aug 31 17:16:19 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle_bang): new method.
-
-	* array.c (rb_ary_shuffle): ditto.
-
-	* random.c (genrand_real): ditto.
-
-	* random.c (genrand_int32): export the function.
-
-	* random.c (Init_Random): initialize random seed at the
-	  beginning.
-
-Thu Aug 31 13:12:06 2006  why the lucky stiff  <why@ruby-lang.org>
-
-	* eval.c (ruby_init): rename top_cref to ruby_top_cref and export,
-	  along with ruby_cref, for use by the sandbox. [ruby-core:08762]
-
-	* node.h: ditto.
-
-Wed Aug 30 12:01:57 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_hash): improve collision.
-
-	* string.c (rb_memhash): new generic function to calculate hash value
-	  for memory chunk.
-
-Tue Aug 29 19:10:10 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_s_create): fixed memory leak, based on the patch
-	  by Kent Sibilev <ksruby at gmail.com>.  fixed: [ruby-talk:211233]
-
-Mon Aug 28 11:29:46 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* eval.c, parse.y: Revert.
-	* ext/.document: Add digest.c.
-	* ext/digest/digest.c: Make RDoc show up.
-	* ext/io/wait.c: Fix call-seq in RDoc.
-
-Mon Aug 28 08:03:20 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/.document: Add C files with RDoc.
-	* ext/digest/digest.c: Convert to RDoc.
-	* ext/io/wait.c: ditto.
-	* lib/rdoc/parsers/parse_rb.rb: Fix typo.  Submitted by
-	  <calamitas at gmail.com>.  [ruby-core:08724]
-
-Mon Aug 28 07:21:47 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* file.c (File#size?): Fix documentation submitted by Rick Ohnemus.
-	  ruby-Bugs-5529.  [ruby-core:08725]
-
-Sun Aug 27 21:41:23 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* oniguruma.h: Version 4.4.0
-
-	* regint.h: ditto.
-
-	* regparse.h: ditto.
-
-	* regexec.c: ditto.
-
-	* regcomp.c ditto.
-
-	* regparse.c: ditto.
-
-Sat Aug 26 08:03:03 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: updated based on date2 3.8.2.
-
-Fri Aug 25 21:15:22 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* common.mk: add regint.h and oniguruma.h to dependence.
-
-	* ext/strscan/depend: ditto.
-
-Fri Aug 25 20:35:57 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/wsdl/document/echo.rb: removed.
-
-	* test/wsdl/document/test_rpc.rb: remove echo.rb after test.
-	  [ruby-dev:29337]
-
-Fri Aug 25 17:02:06 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_sweep): typo fixed.
-
-Fri Aug 25 16:05:50 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (sym_call): check if the receiver is given.
-
-Fri Aug 25 01:10:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_Integer): Integer(nil) should raise TypeError.
-	  [ruby-talk:210205]
-
-	* object.c (nil_to_s): no longer returns empty string but "nil".
-	  [ruby-talk:210205]
-
-	* lib/mkmf.rb: avoid COMMON_HEADERS being nil.
-
-Wed Aug 23 00:25:14 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rexml/source.rb (REXML::IOSource#initialize): encoding have to
-	  be set with the accessor.  fixed: [ruby-list:42737]
-
-Tue Aug 22 19:21:00 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: parameter `to_addrs' might be an Array,
-	  .flatten is required. [ruby-dev:29316]
-
-Tue Aug 22 18:47:51 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::handle_method):
-	  rdoc documents C module methods as instance methods. a patch in
-	  [ruby-core:08536].
-
-Tue Aug 22 12:35:57 2006  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (Kconv::RegexpEucjp): fix regexp for
-	  euc-jp [ruby-dev:29344]
-
-Sun Aug 20 11:46:52 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (num_step): also return an enumerator object if no block
-	  is given.
-
-Sat Aug 19 16:47:51 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (hash2named_arg): accept hash argument
-	  of symbol key.
-
-	* test/win32ole/test_win32ole.rb
-	  ditto.
-
-Sat Aug 19 11:28:08 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_rename): use errno if set properly.
-	  fixed: [ruby-dev:29293]
-
-Fri Aug 18 01:05:57 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::out): specify -m0 to disable MIME decode.  a
-	  patch from Fujioka <fuj at rabbix.jp>.  [ruby-dev:29284]
-
-Thu Aug 17 19:15:16 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_stat_[rRwWxX]): check for super user.
-	  fixed: [ruby-core:08616]
-
-Thu Aug 17 14:47:06 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: added rdoc by Daniel Berger.  [ruby-core:08177]
-
-Wed Aug 16 17:46:59 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_byte): IO#getc returns one byte string now.
-	  fixed: [ruby-dev:29255]
-
-Wed Aug 16 17:22:44 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (pre-install-local): remove unnecessary code.
-	  [ruby-dev:29249]
-
-Wed Aug 16 11:45:36 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_setuid, proc_setgid, proc_seteuid, proc_setegid):
-	  get rid of bogus implementations on Mac OS X.
-
-Wed Aug 16 11:09:26 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_arg0): fill argv other than the first with an empty
-	  string instead of NULL.
-
-Tue Aug 15 11:21:08 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: support SMTP/SSL.  Thanks Kazuhiro NISHIYAMA.
-
-	* lib/net/smtp.rb: new method SMTP.use_ssl?
-
-	* lib/net/smtp.rb: new method SMTP.enable_ssl.
-
-	* lib/net/smtp.rb: new method SMTP.disable_ssl.
-
-	* lib/net/smtp.rb: new method SMTP.default_ssl_port.
-
-	* lib/net/smtp.rb: new method SMTP.default_tls_port.
-
-	* lib/net/smtp.rb: now SMTP#enable_tls accepts a SSLContext
-	  object, instead of a verity and cert.  [FEATURE CHANGE]
-
-	* lib/net/smtp.rb: new method SMTP.ssl_context.
-
-	* lib/net/smtp.rb: new method SMTP.default_ssl_context.
-
-	* lib/net/smtp.rb: export SMTP.authenticate.
-
-	* lib/net/smtp.rb: export SMTP.auth_plain.
-
-	* lib/net/smtp.rb: export SMTP.auth_login.
-
-	* lib/net/smtp.rb: export SMTP.auth_cram_md5.
-
-	* lib/net/smtp.rb: export SMTP.starttls.
-
-	* lib/net/smtp.rb: export SMTP.helo.
-
-	* lib/net/smtp.rb: export SMTP.ehlo.
-
-	* lib/net/smtp.rb: export SMTP.mailfrom.
-
-	* lib/net/smtp.rb: export SMTP.rcptto.
-
-	* lib/net/smtp.rb: export SMTP.rcptto_list.
-
-	* lib/net/smtp.rb: export SMTP.data.
-
-	* lib/net/smtp.rb: export SMTP.quit.
-
-Sat Aug 12 22:33:06 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* string.c (String#split): Describe grouping behavior.  Patch by Jan
-	  Svitok <jan.svitok at gmail.com>.  [ruby-core:08603]
-
-Sun Aug 13 12:08:02 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: ANSIfied.  [ruby-core:08601]
-
-Sat Aug 12 15:55:32 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, bcc32/Makefile.sub, win32/Makefile.sub, win32/dir.h,
-	  win32/win32.c, win32/win32.h: large file support for win32.
-
-Fri Aug 11 15:39:25 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser#find_body): Make RDoc
-	  ignore C function prototypes.  Patch by Tilman Sauerbeck
-	  <tilman at code-monkey.de>.  [ruby-core:8574]
-	* lib/yaml/tag.rb: Replace nodoc with stopdoc so Module methods get
-	  documented.
-
-Wed Aug  9 16:53:28 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP::auth_cram_md5): use ord to retrieve
-	  bytes from strings.  a patch from WATANABE Tetsuya
-	  <Tetsuya.WATANABE at nifty.com>.  [ruby-dev:29240]
-
-Tue Aug  8 23:49:06 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/extend-command.rb (IRB::ExtendCommandBundle): pacify
-	  RDoc.  a patch from Eric Hodel <drbrain at segment7.net>.
-	  [ruby-core:08522]
-
-Tue Aug  8 19:26:10 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::DNS::Message::MessageDecoder::get_string):
-	  affected by str[0] returns 1 char string.  [ruby-dev:29223]
-
-	* lib/resolv.rb (Resolv::DNS::Message::MessageDecoder::get_labels):
-	  ditto.
-
-Tue Aug  8 12:28:43 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (arg): allow newlines before ternary colon.  [ruby-dev:29189]
-
-Mon Aug  7 17:56:59 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c, ext/digest/rmd160/rmd160ossl.c,
-	  ext/digest/sha1/sha1ossl.c, ext/readline/readline.c: move
-	  inclusion of config.h to pacify AIX.  a patch from Yutaka
-	  Kanemoto <kinpoco at gmail.com>.  [ruby-dev:29197]
-
-Mon Aug  7 15:55:08 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/syck.c (syck_move_tokens): should avoid negative
-	  memmove.  [ruby-list:42625]
-
-Mon Aug  7 14:37:48 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in, common.mk: AIX link issue.  a patch from Yutaka
-	  Kanemoto <kinpoco at gmail.com>.  [ruby-dev:29190]
-
-	* ext/socket/socket.c: AIX socket support.  [ruby-dev:29190]
-
-Mon Aug  7 12:05:28 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dln.c, eval.c, gc.c, ruby.h: shut up AIX alloca warning.
-	  a patch from Yutaka Kanemoto <kinpoco at gmail.com>.
-	  [ruby-dev:29191]
-
-Sun Aug  6 20:34:24 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (str[fp]time): %[EO]U didn't denote %U.
-
-Sun Aug  6 17:12:12 2006  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_reopen): STDERR.reopen(open("/dev/tty", "w")) should not
-	  clear FMODE_PREP in STDERR.
-
-Sat Aug  5 22:53:41 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* oniguruma.h: Version 4.2.2
-
-	* regint.h: ditto.
-
-	* regparse.h: ditto.
-
-	* regexec.c: ditto.
-
-	* regcomp.c ditto.
-
-	* regerror.c: ditto.
-
-	* regparse.c: ditto.
-
-Sat Aug  5 17:07:43 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (top_local_setup): local_vars[-1] should point
-	  ruby_scope itself to protect local_tbl from garbage collection.
-	  [ruby-dev:29049]
-
-Sat Aug  5 13:49:43 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (str[fp]time): "%\n" means "\n".
-
-Fri Aug  4 12:13:22 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* lib: Clean up files for RDoc.
-	* lib/.document: Include most of the standard library in RDoc
-	  generation.
-	* lib/rdoc/ri/ri_formatter.rb: Don't unescape HTML in HtmlFormatter.
-	  Submitted by <ksruby at gmail.com>.  [ruby-core:08392].
-	* lib/drb/ssl.rb: Close socket on SSLError [ruby-core:7197]
-
-Fri Aug  4 18:59:49 2006  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/{init.rb,ruby-lex.rb,slex.rb}: can't input '\c' for
-	  [ruby-core: 7122]. and support for ruby1.8.X
-
-Fri Aug  4 14:02:14 2006  James Edward Gray II  <james@grayproductions.net>
-
-	* lib/date/format.rb (__strptime, strftime): allow multi-line patterns
-	  in Date#strftime the same as Time#strftime accepts.
-	  fixed: [ruby-core:08466]
-
-Fri Aug  4 13:56:51 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_pack): check argument overrun for 'P'.  based on a
-	  patch by rucila <rucila at yahoo.cojp>.  fixed: [ruby-dev:29182]
-
-Fri Aug  4 02:42:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): a bug in %c type check.
-
-Fri Aug  4 01:28:19 2006  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_reopen): STDERR.reopen(File.open("/dev/null", "w")) should
-	  not fclose stderr.
-
-Thu Aug  3 15:16:44 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_include): should always call Enumerable#include?
-	  (not #===) for non numeric end points.  [ruby-core:08477]
-	  [ruby-core:08496]
-
-Mon Jul 31 16:51:40 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (exit_handler): new function; release winsock and
-	  environment work area.
-
-	* win32/win32.c (NTInitialize): setup exit_handler.
-
-	* win32/win32.c (StartSockets): use exit_handler.
-
-	* win32/win32.c (rb_w32_getenv): use GetEnvironmentStrings() instead
-	  of GetEnvironmentVariable(), because the latter cannot distinguish
-	  whether a null environment variable exists or not.
-	  fixed: [ruby-talk:205123]
-
-Mon Jul 31 16:15:13 2006  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_process.rb (TestProcess#test_rlimit_nofile):
-	  setrlimit may fail with EINVAL.
-	  reported by MIYAMUKO Katsuyuki.  [ruby-dev:29174]
-
-Mon Jul 31 09:22:12 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h: use ifdef (or defined) for macro constants that may or
-	  may not be defined to shut up gcc's -Wundef warnings.
-	  [ruby-core:08447]
-
-Mon Jul 31 13:38:13 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPReuqest#parse_uri): improve
-	  for the value of IPv6 address in the Host: header field.
-
-Sun Jul 30 23:26:12 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_call0): trace call/return of method defined from block.
-	  fixed: [ruby-core:08329]
-
-	* eval.c (rb_trap_eval): make the current thread runnable to deal with
-	  exceptions which occurred within the trap.  fixed: [ruby-dev:27729]
-
-	* lib/cgi/session.rb, lib/cgi/session/pstore.rb: suppress warnings.
-	  fixed: [ruby-talk:204896]
-
-Sat Jul 29 06:12:06 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: freeze ip_name for security reason.
-
-Sat Jul 29 01:23:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/logger.rb: improves the amount of documentation that Rdoc
-	  picks up when processing logger.rb by moving the require
-	  statement back before the comment block.  a patch from Hugh
-	  Sasse <hgs at dmu.ac.uk>.  [ruby-core:08422]
-
-Fri Jul 28 17:18:03 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/curses/curses.c (NUM2CH, CH2FIX): use single char strings.
-
-Fri Jul 28 14:09:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): fixed typo in cache look-up.  [ruby-dev:29167]
-
-Fri Jul 28 10:41:35 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): a bug in method cache look-up.
-	  http://www.rubyist.net/~matz/20060720.html#c04
-
-Fri Jul 28 10:19:28 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): documentation update patch from Jacob
-	  Fugal <lukfugl at gmail.com>.  [ruby-core:08418]
-
-Fri Jul 28 09:41:45 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_to_s): fixed typo.  [ruby-dev:29162]
-
-Fri Jul 28 00:26:47 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (domain_check): ANSI style function arguments
-
-	* math.c (math_log): too few argument to domain_check().
-
-Thu Jul 27 21:19:54 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (domain_check): a new function to check domain error
-	  explicitly for systems that return NaN like FreeBSD.
-	  [ruby-core:07019]
-
-	* math.c (math_acos, math_asin, math_acosh, math_atanh, math_log,
-	  math_log10, math_sqrt): use domain_check().
-
-	* math.c (math_sqrt): fix documentation flaw.
-
-Thu Jul 27 22:21:52 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_to_s): fixed format mismatch.
-
-Thu Jul 27 18:12:12 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* time.c: need to declare time_utc_offset.
-
-Thu Jul 27 17:01:01 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_close): always calls "close" method of the receiver.
-	  [ruby-core:6911] [ruby-core:8112]
-
-Thu Jul 27 16:41:15 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/openssl/ossl.h: move <ruby.h> inclusion point to shut up
-	  Solaris compiler.  [ruby-core:08114]
-
-	* time.c (time_to_s): use +0900 style timezone string for local time.
-	  [ruby-dev:29143]
-
-Wed Jul 26 22:20:59 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: add support for as and ASFLAGS.  [ruby-dev:29138]
-
-Wed Jul 26 21:59:33 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (Net::HTTP#post, request_post, request): should
-	  set Content-Type: x-www-form-urlencoded by default.
-
-	* lib/net/http.rb (Net::HTTPHeader#content_type): should return
-	  nil when there's no Content-Type.
-
-	* lib/net/http.rb (Net::HTTPHeader#sub_type): should return nil
-	  when there's no sub Content-Type (e.g. "Content-Type: text").
-
-	* lib/net/http.rb (Net::HTTPHeader#type_params): wrongly failed
-	  when there's no Content-Type.
-
-Wed Jul 26 18:38:13 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c (strscan_do_scan): always return nil if
-	  p->curr exceeds string size.
-
-Wed Jul 26 18:33:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_eval): rename #invoke_method and
-	  #invoke_functional_method to __send and __send! respectively.
-
-	* eval.c (remove_method): prohibit removing __send and __send!.
-
-	* eval.c (rb_undef): prohibit undef'ing  __send and __send!.
-
-	* eval.c (rb_eval): prohibit redefining  __send and __send!.
-
-	* lib/delegate.rb (Delegator): preserve __send.
-
-Wed Jul 26 18:14:19 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/pty.c (getDevice): retry once after GC on failure.
-	  [ruby-core:08282]
-
-Wed Jul 26 17:43:20 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c (strscan_do_scan):
-	  StringScanner.new("").scan(//) should return "". [ruby-Bugs:4361]
-
-Wed Jul 26 17:28:16 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): prepend ".." to %u for negative bignum,
-	  but not "-".  fixed: [ruby-core:08167]
-
-Wed Jul 26 16:39:07 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_scan): add string modification check.
-	  [ruby-core:7216]
-
-Wed Jul 26 16:06:03 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::read_multipart): check
-	  multipart boundary end.  a patch from Fujioka <fuj at rabbix.jp>
-	  [ruby-dev:28470]
-
-Wed Jul 26 01:02:59 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: suppress warnings by automake 1.8 or later.
-
-Tue Jul 25 14:46:14 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): typo.
-
-Tue Jul 25 13:14:32 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_proc_times): rename hz to hertz to avoid name
-	  crash on AIX.  [ruby-dev:29126]
-
-Mon Jul 24 22:03:40 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (backtrace): skip frames successive on node and method name.
-
-Mon Jul 24 15:51:52 2006  Tanaka Akira  <akr@fsij.org>
-
-	* ext/readline/readline.c (readline_readline): rl_deprep_term_function
-	  may be NULL with libedit.  reported by Ryan Davis.  [ruby-dev:29070]
-
-Mon Jul 24 15:19:55 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): revert last change.  [ruby-dev:29112]
-	  [ruby-core:08374]
-
-Sun Jul 23 22:59:49 2006  Tanaka Akira  <akr@fsij.org>
-
-	* test/socket/test_unix.rb: disabled on cygwin.
-	  reported by Kouhei Yanagita.  [ruby-dev:29080]
-
-Fri Jul 21 23:57:26 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): script is never used while recursing.
-
-Fri Jul 21 21:21:08 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_call0): include funcalled methods in caller list.
-	  fixed: [ruby-core:08290]
-
-Fri Jul 21 17:52:24 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): "9_e8" should consider "_e8" as
-	  trailing garbage so that it should return 9.0.  [ruby-dev:29088]
-
-Fri Jul 21 12:11:00 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb, lib/mkmf.rb (with_destdir): remove drive letter before
-	  prepending destdir on DOSISH.
-
-Fri Jul 21 04:17:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): try local method look-up first for fcall, then
-	  normal method look-up.  [ruby-talk:202564]
-
-	* eval.c (rb_get_method_body): save local method cache separately.
-
-	* eval.c (search_method): export info whether method is local or
-	  not.
-
-Thu Jul 20 20:27:07 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_attr): make Module#attr to be an alias to
-	  attr_reader.  [RCR#331]
-
-Thu Jul 20 15:07:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h: export classes/modules to implement sandbox.
-	  [ruby-core:08283]
-
-Wed Jul 19 19:40:00 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): should check args_args before lambda
-	  argument check.  [ruby-dev:29029]
-
-Tue Jul 18 23:53:59 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_f_system): shouldn't block SIGCHLD if it's not
-	  exist.
-
-Tue Jul 18 22:10:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_f_system): block SIGCHLD during the process
-	  execution, like glibc system(3) does.  [ruby-talk:202361]
-
-Tue Jul 18 23:10:43 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (open_ifs_socket): should not use plain malloc.
-
-	* win32/win32.c (rb_w32_opendir): should not use plain realloc.
-
-Tue Jul 18 18:05:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_float.rb (TestFloat::test_strtod): update test to
-	  conform strtod change.
-
-Tue Jul 18 16:52:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (yield_under_i): argument should be passed in avalue
-	  form.  [ruby-dev:29044]
-
-Tue Jul 18 15:49:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_unpack): propagate association array to copied
-	  string.  [ruby-core:08223]
-
-	* pack.c (pack_unpack): return referenced string itself if it has
-	  same length as specified.  a patch from <nobu at ruby-lang.org>
-	  in [ruby-core:08225].
-
-	* pack.c (pack_pack): taint 'p' packed strings.
-
-Tue Jul 18 15:19:07 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* intern.h (st_foreach_safe): fix prototype.
-
-	* node.h (NODE_LMASK): bigger than long on LLP64.
-
-	* missing/vsnprintf.c (BSD__uqtoa): new function to support LLP64.
-	  all changes are derived from [ruby-dev:29045]
-
-Tue Jul 18 14:03:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer::unmount): remove
-	  inpect argument from sprintf.  [ruby-dev:29039]
-
-Tue Jul 18 10:53:37 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): limit out-of-range message.
-
-	* util.c (ruby_strtod): return end pointer even if ERANGE occurred.
-	  fixed: [ruby-dev:29041]
-
-Mon Jul 18 00:43:05 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strtod): stop at dot not followed by digits.
-	  fixed: [ruby-dev:29036]
-
-Tue Jul 18 00:01:27 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: remove LIBRUBY_SO if static linked extensions exist.
-
-Mon Jul 17 23:30:46 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_msvcrt): defaulted to msvcrt.  Workaround for a
-	  bug of cygwin 1.5.20.
-
-Mon Jul 17 22:55:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/io/wait/wait.c (io_ready_p): protoize.
-
-Mon Jul 17 13:43:05 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (define_swapx): should not use plain malloc.
-
-	* ext/curses/curses.c (curses_getmouse): ditto.
-
-Mon Jul 17 12:58:41 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: should use ac_cv_lib_dl_dlopen=no on MinGW.
-
-Mon Jul 17 11:47:35 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* st.c: still need to include config.h on some platforms.
-
-Sat Jul 15 01:09:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c (malloc): use xmalloc/xcalloc instead of plain
-	  malloc/calloc, to detect memory allocation failure.  see
-	  <http://www.nongnu.org/failmalloc/>.
-
-Fri Jul 14 13:08:13 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add methods for new features of latest Tcl/Tk8.5.
-
-	* ext/tk/lib/tk/namespace.rb: ditto.
-
-Fri Jul 14 02:30:12 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/monitor.rb: document patch from Hugh Sasse <hgs at dmu.ac.uk>.
-	  [ruby-core:08205]
-
-Fri Jul 14 00:10:15 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_pop): may cause realloc oscillation.  a patch
-	  from MORITA Naoyuki <mlgetter at kidou.sakura.ne.jp>.
-	  [ruby-dev:29028]
-
-Thu Jul 13 22:23:56 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/composite.rb: improve handling of the classname on the
-	  option database for the widget class which includes TkComposite.
-
-Thu Jul 13 00:40:57 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (FIX2LONG): returns integer of size of VALUE.
-	  [ruby-dev:29024]
-
-	* ruby.h (FIX2ULONG): ditto.
-
-Wed Jul 12 20:05:23 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_args): allow post mandatory arguments after optional
-	  arguments.  [ruby-dev:29014]
-
-	* parse.y (new_args_gen): allow post_args without rest_args.
-
-	* eval.c (formal_assign): ditto.
-
-	* parse.y (new_args_gen): check post argument duplication.
-
-Tue Jul 11 20:58:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h: export rb_cMethod.  [ruby-talk:201259]
-
-Tue Jul 11 19:13:33 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: remove restriction on the class of
-	  pseudo-toplevel.
-
-Tue Jul 11 18:00:57 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: security fix.
-
-Tue Jul 11 17:28:08 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_dump): need to extend len for \b.
-
-Tue Jul 11 15:29:15 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_int2big): use SIGNED_VALUE.  [ruby-dev:29019]
-
-	* bignum.c (rb_int2inum, rb_uint2inum): use VALUE sized integer.
-
-	* bignum.c (rb_big2long, rb_big2ulong): ditto.
-
-	* numeric.c (rb_num2long, rb_num2ulong): ditto.
-
-	* numeric.c (check_int, check_uint): ditto.
-
-	* bignum.c (rb_quad_pack): typo fixed.
-
-Tue Jul 11 13:40:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bignorm): sizeof(long) may be smaller than
-	  sizeof(VALUE).  [ruby-dev:29013]
-
-	* ruby.h (FIXNUM_MAX): fixnum may be bigger than long.
-
-	* ruby.h (SIGNED_VALUE): signed integer of size of VALUE.
-
-Mon Jul 10 23:37:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/soap/rpc/proxy.rb (Proxy::Operation::response_doc): remove
-	  splat star from return statements.
-
-	* lib/soap/rpc/proxy.rb (Proxy::Operation::response_obj): retrieve
-	  the first value from the result array if response has only one
-	  value.
-
-Mon Jul 10 22:00:00 2006  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c: Allows '_' to appear within
-	  digits.  [ruby-dev:28872]
-
-	* ext/bigdecimal/lib/bigdecimal/util.rb: Bug in to_r reported by
-	  [ruby-list:42533] fixed.
-
-Mon Jul 10 19:22:19 2006  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (gc_sweep): expand heap earlier.
-	  reported by MORITA Naoyuki.  [ruby-dev:28960]
-
-Mon Jul 10 18:59:34 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/font.rb: sorry. mistaken to patch.
-
-Mon Jul 10 18:46:52 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: make SEGV risk lower at exit.
-
-	* ext/tk/lib/tk.rb: ditto.
-
-	* ext/tk/lib/multi-tk.rb: fail to call function-style methods on slave
-	  interpreters. The strategy (MultiTkIp_PseudoToplevel_Evaluable) to
-	  fix the problem is a little tricky. You may have to take care of
-	  conflicting with it.
-
-	* ext/tk/lib/tk.rb: a little change for the pseudo-toplevel strategy.
-
-	* ext/tk/lib/tk/font.rb: ditto.
-
-	* ext/tk/lib/tk/msgcat.rb: ditto.
-
-	* ext/tk/lib/tkextlib/itk/incr_tk.rb: ditto.
-
-	* ext/tk/sample/demos-en/widget: fail to call function-style methods
-	  on sample scripts. To fix it, a strategy which similar to the way
-	  on MultiTiIp is used. Please take care when re-write and re-run a
-	  demo script on the Widget-Demo code viewer.
-
-	* ext/tk/sample/demos-jp/widget: ditto.
-
-Mon Jul 10 17:32:38 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/test.rb: update test suites.
-
-	* test/ruby/test_assignment.rb (TestAssignment::test_yield): ditto.
-
-	* test/ruby/test_iterator.rb (TestIterator::test_itertest): ditto.
-
-Mon Jul 10 14:43:47 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): remove erroneously restored prot_tag->blkid
-	  initialization.  [ruby-dev:28997]  [ruby-dev:29000]
-
-Mon Jul 10 13:58:08 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* signal.c (install_nativethread_sighandler): commented out.
-
-Mon Jul 10 09:29:12 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_clear_cache_for_remove): clear entries for included
-	  module.  fixed: [ruby-core:08180]
-
-Mon Jul 10 02:22:58 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): should not overwrite block information in
-	  current frame.  [ruby-dev:28957]
-
-	* eval.c (rb_yield_0): retrieve proper block object from the frame
-	  record.
-
-	* eval.c (proc_alloc): return preserved block object if it's
-	  available.
-
-Mon Jul 10 01:48:38 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.h (st_data_t): use pointer sized integer for st_data_t.
-	  [ruby-dev:28988]
-
-Sun Jul  9 18:06:47 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_constant): fix for value 1 at cross compiling.
-
-	* lib/mkmf.rb (create_makefile): prevent substitution of macro
-	  definition.  fixed: http://www.yotabanana.com/lab/20060624.html#p02
-
-Sun Jul  9 07:58:48 2006  Ryan Davis  <ryand@zenspider.com>
-
-	* lib/rdoc/parsers/parse_f95.rb: massive overhaul from Yasuhiro
-	  Morikawa including new file suffixes, function support, public
-	  variables and constants, derived-types, defined operators and
-	  assignments, namelists, and subroutine and function
-	  arguments. Truly massive.
-
-	* lib/rdoc/diagram.rb: diagrams are now cached.
-
-	* lib/irb/completion.rb: fixed a crasher when completing against
-	  an unnamed class/module.
-
-	* lib/rdoc/parsers/parse_c.rb: private comment (--/++) support in
-	  C-file rdoc.
-
-	* lib/debug.rb: minor clarification in help.
-
-	* lib/pp.rb: minor clarification on exception.
-
-Sun Jul  9 00:54:11 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (next_jump): deal with destination of next.
-	  fixed: [ruby-core:08169]
-
-Fri Jul  7 17:49:16 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_ord): extract lower byte.  fixed: [ruby-dev:28980]
-
-	* lib/jcode.rb (String#succ!): fix for 1.9.  fixed: [ruby-dev:28979]
-
-Fri Jul  7 14:05:03 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): define FUNC_STDCALL/FUNC_CDECL.
-	  from [ruby-dev:28970].
-
-Fri Jul  7 00:38:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_default): should not call default procedure if
-	  no key is given.  [ruby-list:42541]
-
-Thu Jul  6 23:30:04 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_proc_times): use sysconf(_SC_CLK_TCK) value prior to
-	  HZ and CLK_TCK.  fixed: [ruby-talk:200293]
-
-Thu Jul  6 21:50:06 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/racc/cparse/cparse.c: sync with original code, rev 1.8.
-
-	* ext/racc/cparse/cparse.c: should mark CparseParams objects.
-
-	* lib/racc/parser.rb: sync with original code, rev 1.8.
-
-	* lib/racc/parser.rb: update coding style.
-
-Wed Jul  5 05:28:45 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (block_param): should allow block argument after splat
-	  and post splat args.
-
-Wed Jul  5 01:12:19 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_lambda.rb (TestLambdaParameters::test_lambda_as_iterator):
-	  -> style block no longer available.  [ruby-dev:28958]
-
-Tue Jul  4 21:48:56 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (proc_options): suppress warning on DOSISH.
-
-Tue Jul  4 15:12:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): should not set prot_tag->blkid since it would
-	  never catch breaks at this level.  [ruby-dev:28922]
-
-Tue Jul  4 04:48:36 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c: ruby 1.9 HEAD 64 bit warnings clean up from
-	  <ville.mattila at stonesoft.com>.   [ruby-core:08120]
-
-Mon Jul  3 19:04:38 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_make_menu_embeddable): help to make a menu
-	  widget embeddable (pack, grid, and so on) like as a general widget.
-	  However, an embeddable menu may require to be defined some event
-	  bindings for general use.
-
-	* ext/tk/lib/tk/event.rb: [bug fix] Tk.callback_break and
-	  Tk.callback_continue don't work on MultiTkIp.
-
-	* ext/tk/lib/multi-tk.rb: ditto.
-
-	* ext/tk/lib/tk.rb: lack of Tk.callback_return.
-
-	* ext/tk/lib/tk/menu.rb: improve creating clone menus.
-
-Mon Jul  3 14:42:06 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/extconf.rb (PW_UID2VAL, PW_GID2VAL): defaulted to conversion
-	  from int, and sys/types.h needs to be included before grp.h.
-	  fixed: [ruby-dev:28938]
-
-Mon Jul  3 10:44:01 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (popen_exec): close file descriptors other than standard I/Os.
-	  fixed: [ruby-dev:28924]
-
-Mon Jul  3 05:15:29 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/openssl/test_asn1.c: String#[]= doesn't accept Integer.
-
-Mon Jul  3 01:14:15 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_inspect): encode \b (\010) for escape.
-	  [ruby-dev:28927]
-
-	* string.c (rb_str_dump): ditto.
-
-Sun Jul  2 19:03:30 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/racc/cparse/cparse.c: sync with original code, rev 1.7.
-
-	* ext/racc/cparse/cparse.c: must require version.h to get
-	  RUBY_VERSION_CODE.
-
-Sun Jul  2 18:42:27 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/racc/cparse/cparse.c: sync with original source code, rev
-	  1.6.
-
-	* ext/racc/cparse/cparse.c: do not use rb_iterate to give a block
-	  to the method, use rb_block_call instead. [ruby-dev:28445]
-
-Sun Jul  2 11:22:03 2006  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (io_reopen): STDOUT.reopen(filename, "w+") didn't work.
-	  (rb_io_reopen): STDOUT.reopen(File.open(filename, "w+")) didn't work.
-
-Sat Jul  1 23:55:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (PUSH_FRAME): initialize frame->self.  [ruby-dev:28911]
-
-Sat Jul  1 17:00:42 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/webrick/utils.rb: use Proc#yield instead of Proc#call.
-	  [ruby-dev:28914]
-
-Sat Jul  1 15:15:49 2006  Tanaka Akira  <akr@m17n.org>
-
-	* test/socket/test_nonblock.rb: add timeout to send/receive
-	  an empty UDP packet.
-	  [ruby-dev:28820]
-
-Fri Jun 30 23:46:23 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: should test isinf for Solaris with GCC compiler.
-	  a patch from <ville.mattila at stonesoft.com>.  [ruby-core:07791]
-
-	* configure.in: -shared patch from Andrew Morrow
-	  <andrew.c.morrow at gmail.com>.  [ruby-core:08100]
-
-Fri Jun 30 19:35:41 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils._escape): should
-	  use String#ord to get ascii code from the one-character string.
-	  [ruby-dev:28901]
-
-Thu Jun 29 23:56:01 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_mark_children): a bug in NODE_BLOCK_PASS marking.
-	  [ruby-dev:28908]
-
-Thu Jun 29 23:04:36 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: use ARGSPUSH instead of ARGSCAT to prevent too much
-	  splat expansion.
-
-	* eval.c (when_check): need to handle ARGSPUSH as well.
-
-	* eval.c (block_orphan): lambda and proc from method are always
-	  orphan.
-
-	* gc.c (gc_mark_children): proper marking for NODE_LAMBDA.
-
-Thu Jun 29 22:47:30 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (SETUP_ARGS0): avoid GC problem.
-	  [ruby-dev:28902]
-
-Thu Jun 29 18:58:51 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_version): fix patch
-	  failure.
-
-Thu Jun 29 18:00:51 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c: add RDoc document.  a patch from
-	  mathew <meta at pobox.com>.   [ruby-core:07050]
-
-Wed Jun 28 14:53:09 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/optparse.rb: RDoc patch from Robin Stocker <robin@nibor.org>
-	  [ruby-core:08087]
-
-Wed Jun 28 23:23:48 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): underscores should appear only
-	  between digits.  [ruby-dev:28891]
-
-Wed Jun 28 19:04:34 2006  Tanaka Akira  <akr@m17n.org>
-
-	* test/socket/test_unix.rb: test_seqpacket_pair removed.
-	  [ruby-dev:28846]
-
-Wed Jun 28 13:51:21 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (when_check): arbitrary values are allowed after splats.
-	  fixed: [ruby-dev:28879]
-
-Wed Jun 28 09:16:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): remove meaningless else-only case statement
-	  syntax.
-
-Wed Jun 28 08:08:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): problem to handle else part.  [ruby-dev:28873]
-
-Wed Jun 28 01:48:23 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): support splat in when expression list.
-	  [ruby-dev:28822]
-
-	* eval.c (when_check): a new auxiliary function for case match.
-
-	* eval.c (when_cond): ditto.
-
-Wed Jun 28 01:05:37 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): should not skip '_' at the beginning
-	  of a string.  [ruby-dev:28830]
-
-	* bignum.c (rb_cstr_to_inum): ditto.
-
-Tue Jun 27 23:03:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c: RDoc update for =~ method.  a patch from Alex Young
-	  <alex at blackkettle.org>.  [ruby-core:08068]
-
-Tue Jun 27 22:47:18 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: forgot to update TCLTKLIB_RELEASE_DATE.
-
-	* ext/tk/lib/tk.rb (tk_tcl2ruby): [bug fix] sometimes fail to convert
-	  a tcl string to a ruby object if the tcl string includes "\n".
-
-Tue Jun 27 20:05:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (pipe_open): backout unnecessary fix on 2006-06-26.
-	  [ruby-dev:28865]
-
-	* eval.c (rb_yield_0): exact argument number check now done only
-	  for lambda Proc.
-
-	* eval.c (rb_yield_0): add check for number of arguments, if
-	  there's one lambda block parameter.
-
-Tue Jun 27 16:04:05 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.h: define isascii on MinGW for msvcrt compatibility.
-
-	* configure.in: set ac_cv_header_sys_time_h=no on MinGW
-	  for msvcrt compatibility.
-
-Tue Jun 27 11:36:02 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (setup_passwd, setup_group): allow bignum uid, gid and
-	  so on.  [ruby-talk:199102]
-
-Tue Jun 27 10:46:53 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (rb_yield_0): avoid core dump.  [ruby-dev:28840]
-
-Mon Jun 26 11:03:00 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri: Add options to limit the ri search path.
-
-Tue Jun 27 01:31:59 2006  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c (bsock_recv_nonblock): new method
-	  BasicSocket#recv_nonblock.
-	  (udp_recvfrom_nonblock): renamed from ip_recvfrom_nonblock.
-	  IPSocket#recvfrom_nonblock is moved to UDPSocket#recvfrom_nonblock.
-	  (unix_recvfrom_nonblock): removed.
-	  UNIXSocket#recvfrom_nonblock is removed.
-
-Tue Jun 27 00:52:40 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/ripper/eventids2.c (token_assoc): added tCHAR, which is not
-	  under 256 now.  fixed: [ruby-dev:28832]
-
-Mon Jun 26 23:42:57 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (call_trace_func): no check for argument number of the
-	  callback.  fixed: [ruby-dev:28812]
-
-Mon Jun 26 18:37:44 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_delete): fix SEGV when a slave-ip is
-	  deleted on callback.
-
-Mon Jun 26 15:40:26 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_accept): revert to avoid ambiguity of
-	  argument evaluation order.  [ruby-dev:28861]
-
-	* ext/socket/socket.c (sock_accept_nonblock): ditto.
-
-Mon Jun 26 10:47:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (pipe_open): avoid closing uninitialized file descriptors.
-	  a patch from <tommy at tmtm.org> [ruby-dev:28600]
-
-Sun Jun 25 23:02:12 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, mkconfig.rb: catch-up for latest autoconf.
-
-Sun Jun 25 17:44:16 2006  Tanaka Akira  <akr@m17n.org>
-
-	* parse.y (paren_args): wrap $2 by escape_Qundef because it may be
-	  Qundef.  [ruby-dev:28843]
-
-Sun Jun 25 17:18:33 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(ole_invoke): support some kind of
-	  method of word. [ruby-Bugs#3237]
-
-	* test/win32ole/test_word.rb: ditto.
-
-Sat Jun 24 23:48:08 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: replace terminal token names with more descriptive
-	  name, i.e. kEND to keyword_end.  [ruby-list:42477]
-
-Sat Jun 24 23:37:41 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (rb_eval): use rb_ary_new2 instead of rb_ary_new4 to avoid
-	  GC problem.
-	  (rb_yield_values): use rb_ary_new2 instead of rb_ary_new4.
-
-	* array.c (rb_ary_new4): don't set len as n if contents is not
-	  initialized.  make it safe with GC.
-
-	  [ruby-dev:28826]
-
-Fri Jun 23 23:35:32 2006  Tanaka Akira  <akr@m17n.org>
-
-	* ruby.h, lib/drb/drb.rb, lib/drb/invokemethod.rb: remove Values class.
-	  [ruby-dev:28805]
-
-Fri Jun 23 17:27:52 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_block_pass): removed.
-
-	* eval.c (rb_thread_start_1): use rb_proc_yield() instead of
-	  rb_block_pass().  fixed: [ruby-dev:28794]
-
-Thu Jun 22 11:52:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTPResponse): duplicated error 501;
-	  HTTPInternalServerError should be error 500.  [ruby-core:08037]
-
-Thu Jun 22 11:47:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_name): returns nil for anonymous modules.
-	  [ruby-talk:198440]
-
-Thu Jun 22 10:31:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_aref): "abc"[3] should not return an empty
-	  string but nil.  [ruby-dev:28786]
-
-Thu Jun 22 05:15:58 2006  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c (sock_s_socketpair): try GC only once.
-	  [ruby-dev:28778]
-
-Wed Jun 21 21:20:31 2006  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (jd_to_commercial): now works fine even if in
-	  mathn-ized context.
-
-Wed Jun 21 17:29:57 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/getaddrinfo.c (freeaddrinfo, get_name): fixed typo.
-
-	* ext/tk/tcltklib.c (tcl_eval, tcl_global_eval): ditto.
-
-	* ext/zlib/zlib.c (rscheck): constified.
-
-Wed Jun 21 17:18:55 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/pp.rb (PP::PPMethods::seplist): should have preserved
-	  original reference to the array.  [ruby-dev:28747]
-
-Wed Jun 21 14:35:06 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (block_param): do not use multiple assignment for a sole
-	  block parameter.  [ruby-dev:28710]
-
-	* eval.c (rb_yield_0): pass a raw yielded value to a sole block
-	  parameter if a value is passed by yield.
-
-	* eval.c (proc_invoke): args may not be an array.
-
-	* eval.c (rb_proc_yield): pass original value without wrapping
-	  it in an array.
-
-Wed Jun 21 14:06:47 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (method_call): remove (fn)(args) style lambda
-	  invocation, add fn.(args) instead.
-
-Wed Jun 21 08:39:54 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/xmlrpc/create.rb (XMLRPC::Create::conv2value): merge Date
-	  and Time processing.  [ruby-core:08033]
-
-Wed Jun 21 03:01:10 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c, file.c, etc.: code-cleanup patch from Stefan Huehner
-	  <stefan at huehner.org>.  [ruby-core:08029]
-
-Wed Jun 21 01:40:25 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reswords): modifier token is no longer returned in fname
-	  state.  fixed: [ruby-dev:28775]
-
-Tue Jun 20 23:28:34 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (parse_args): provisional catch-up for the recent changes.
-
-	* lib/optparse.rb (OptionParser::List#summarize, OptionParser#order!): ditto.
-
-Tue Jun 20 11:07:55 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): intercept break and return from lambda
-	  Proc objects.  [ruby-dev:28742]
-
-	* eval.c (proc_invoke): remove unnecessary YIELD_PROC_CALL flag.
-
-	* eval.c (YIELD_EXACT_ARGS): renamed from YIELD_LAMBDA_CALL, which
-	  is no longer related to the behavior turned on by this flag.
-
-	* eval.c (return_jump): no need to care about PROT_YIELD.
-
-	* eval.c (break_jump): no jump to toplevel PROT_THREAD tag.
-
-	* eval.c (rb_yield_0): fix confusion between lambda (which is a
-	  property of a proc) and pcall (which depends on whether it's
-	  called via yield or call).
-
-	* eval.c (rb_thread_yield): no need to specify YIELD_LAMBDA_CALL.
-
-	* eval.c (rb_block_pass): update blkid in prot_tag.
-
-Mon Jun 19 23:40:59 2006  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	  * ext/nkf/lib/kconv.rb: remove default -m0 and fix document.
-
-	  * ext/nkf/nkf-8/{nkf.c, config.h, utf8tbl.c, utf8tbl.h}:
-	    imported nkf 2.0.7.
-
-Mon Jun 19 17:02:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/test.rb (proc_return3): return within non lambda block
-	  should terminate surrounding method.  [ruby-dev:28741]
-
-Mon Jun 19 13:22:48 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (unix_sysaccept): typo fixed.
-
-	* ext/socket/socket.c (sock_connect): remove an unused local
-	  variable tmpaddr.
-
-Mon Jun 19 02:10:32 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (tcp_accept_nonblock): forgot to remove
-	  abandoned hacks.  [ruby-dev:28740]
-
-Mon Jun 19 00:00:17 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: fix bug: initialize improper tables.
-
-Sun Jun 18 20:28:43 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fole_methods): The return value
-	  of WIN32OLE#ole_methods should include PROPERTYPUTREF methods.
-
-	* ext/win32ole/win32ole.c (fole_put_methods): The return value
-	  of WIN32OLE#ole_put_methods should include PROPERTYPUTREF methods.
-
-	* test/win32ole/test_ole_methods.rb: ditto.
-
-	* ext/win32ole/win32ole.c (ole_propertyput): support
-	  PROPERTYPUTREF. [ruby-talk:183042]
-
-	* test/win32ole/test_propertyputref.rb: ditto.
-
-Sat Jun 17 23:42:26 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_eval): add aliases invoke_method and
-	  invoke_functional_method corresponding send and funcall
-	  respectively.  [ruby-talk:197512]
-
-	* parse.y (parser_yylex): returns the most typical keyword token
-	  on EXPR_FNAME.  [ruby-core:7995]
-
-	* ext/socket/socket.c: protoize.
-
-Sat Jun 17 22:17:17 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Integer::prime_division): raise ZeroDivisionError
-	  on zeros.  [ruby-dev:28739]
-
-Sat Jun 17 14:53:32 2006  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Kernel#Pathname): new method.
-
-Sat Jun 17 02:01:00 2006  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (Kernel#pretty_inspect): defined for pretty printed
-	  string.
-
-Fri Jun 16 01:41:00 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_proc_arity): get rid of segfault for mere splat.
-
-	* gc.c (gc_mark_children): NODE_BLOCK_PASS needs u3 to be marked.
-
-Thu Jun 15 22:06:56 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (then): remove ':' from 'then' and 'do' rules.
-
-Wed Jun 14 18:00:20 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* enum.c (enum_any): Documentation typo.
-
-Wed Jun 14 15:01:09 2006  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser#warn): Don't print
-	  warnings when -q is set.
-
-Wed Jun 14 16:11:37 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (rb_f_method_name, rb_f_callee_name): document typo.
-
-Wed Jun 14 15:19:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (env_aset): raise TypeError on nil with more descriptive
-	  message.  [ruby-core:07990]
-
-Tue Jun 13 17:22:19 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (Init_socket): remove obsolete constants:
-	  IPsocket, TCPsocket, SOCKSsocket, TCPserver, UDPsocket,
-	  UNIXsocket, UNIXserver.
-
-Tue Jun 13 09:07:27 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (formal_assign): post splat arguments should have had
-	  higher priority than optional arguments, since they are
-	  mandatory.  [ruby-dev:28715]
-
-	* eval.c (VIS_MASK): broken. should be 15.  [ruby-dev:28715]
-
-	* io.c (argf_getc): should return one-character string.
-	  [ruby-dev:28715]
-
-	* io.c (rb_io_readchar): ditto.
-
-Sun Jun 11 23:20:07 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (sym_call): disallow to call private methods.
-
-	* lib/optparse.rb (OptionParser::Arguable#getopts): pass self to the
-	  parser.
-
-Sun Jun 11 09:56:41 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.h (write): not need to define on bcc.
-
-Sun Jun 11 08:30:33 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#getopts): new methods.
-
-Sun Jun 11 07:27:11 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/ri_writer.rb: use String#ord.
-
-Sun Jun 11 04:38:20 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (sym_to_proc): imported Symbol#to_proc from ActiveSupport.
-
-Sat Jun 10 18:02:40 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/newton.rb (Newton::nlsolve): typo
-	  fixed: raize -> raise.  [ruby-talk:196608]
-
-Sat Jun 10 17:49:53 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_ord): new method.
-
-	* parse.y (rbracket): allow optional newline before closing
-	  brackets.
-
-Sat Jun 10 15:12:29 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (rb_f_method_name, rb_f_callee_name): new functions.
-	  new global method `__method__' and `__callee__'.
-
-Sat Jun 10 10:13:13 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/getoptlong.rb (GetoptLong#set_options): receive arguments
-	  as Array.
-
-	* lib/irb/slex.rb: use Proc#yield.
-
-	* lib/rdoc/markup/simple_markup/inline.rb: follow the new behavior
-	  of String#[].
-
-	* lib/rdoc/ri/ri_writer.rb: ditto.
-
-Sat Jun 10 08:17:23 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* math.c (log2): may be a macro.
-
-	* parse.y (args, block_param, f_args): pass f_post_arg to #params.
-
-	* util.c (powersOf10): constified.
-
-	* ext/readline/readline.c: include extconf.h first.
-
-	* ext/ripper/eventids2.c: removed tLAMBDA_ARG.
-
-	* ext/tk/tcltklib.c (lib_fromUTF8_core): removed conflict.
-
-	* ext/tk/tkutil/tkutil.c (cbsubst_get_subst_arg): rb_id2name() is
-	  defined as const now.
-
-	* ext/win32ole/win32ole.c (fole_missing): ditto.
-
-	* lib/mkmf.rb (create_makefile): force to create extconf header.
-
-	* lib/optparse.rb (order!): use Proc#yield.
-
-Sat Jun 10 06:53:22 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (CALLARGS): remove last semicolon. C90 compiler doesn't
-	  allow any lines (even if they're empty) within variable
-	  declarations.
-
-Fri Jun  9 09:56:32 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): allow %c to print one character
-	  string (e.g. ?x).
-
-Thu Jun  8 14:00:02 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.[ch] (rb_w32_read, rb_w32_write): new functions.
-	  use recv() and send() when fd is socket. fixed: [ruby-dev:28694]
-
-Wed Jun  7 16:22:51 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile::make_tmpname): put dot between
-	  basename and pid.  [ruby-talk:196272]
-
-Wed Jun  7 16:16:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (do_block): remove -> style block.
-
-	* parse.y (parser_yylex): remove tLAMBDA_ARG.
-
-Wed Jun  7 14:51:22 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (errmap): add some winsock errors.
-
-Wed Jun  7 09:14:44 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): binding for the return event hook should have
-	  consistent scope.  [ruby-core:07928]
-
-Tue Jun  6 23:25:49 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): return behavior should depend whether it
-	  is surrounded by a lambda or a mere block.
-
-Mon Jun  5 18:12:12 2006  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c (sock_s_unpack_sockaddr_in): reject
-	  non-AF_INET/AF_INET6 sockaddr.
-	  (sock_s_unpack_sockaddr_un): reject non-AF_UNIX sockaddr.
-	  [ruby-dev:28691]
-
-Sun Jun  4 20:40:19 2006  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c: fix sockaddr_un handling.
-	  [ruby-dev:28677]
-
-Sat Jun  3 23:53:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (formal_assign): handles post splat arguments.
-
-	* eval.c (rb_call0): ditto.
-
-Sat Jun  3 13:10:41 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c (strhash): use FNV-1a hash.
-
-Fri Jun  2 20:01:24 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): removed experimental ';;' terminator.
-
-Fri Jun  2 19:00:40 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: use create_header.
-
-	* ext/openssl/ossl.h, ext/openssl/openssl_missing.h:
-	  include RUBY_EXTCONF_H.
-
-Fri Jun  2 17:16:52 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (CLEANINGS): remove extconf.h by distclean if created.
-
-Fri Jun  2 00:11:19 2006  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c (s_recvfrom): alen may be zero with UNIXSocket
-	  too.  (tested on NetBSD 3.0)
-	  (s_recvfrom_nonblock): extracted from sock_recvfrom_nonblock.
-	  (sock_recvfrom_nonblock): use s_recvfrom_nonblock.
-	  (ip_recvfrom_nonblock): new method: IPSocket#recvfrom_nonblock
-	  (unix_recvfrom_nonblock): new method: UNIXSocket#recvfrom_nonblock
-	  (s_accept_nonblock): extracted from sock_accept_nonblock.
-	  (sock_accept_nonblock): use s_accept_nonblock.
-	  (tcp_accept_nonblock): new method: TCPServer#accept_nonblock
-	  (unix_accept_nonblock): new method: UNIXServer#accept_nonblock
-
-Thu Jun  1 19:12:37 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_cmdvector): backslashes inside single-quotes
-	  no longer has special meanings.  fixed: [ruby-list:42311]
-
-Thu Jun  1 17:55:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_node_arity): should be aware of post splat arguments.
-
-	* eval.c (rb_proc_arity): ditto.
-
-Thu Jun  1 16:17:26 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_getcwd): runtime's getcwd() will not success
-	  if the length of the cwd is longer than MAX_PATH.
-	  fixed [ruby-list:42335]
-
-Thu Jun  1 16:07:48 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_args): syntax rule enhanced to support arguments
-	  after the splat.
-
-	* parse.y (mlhs_basic): ditto for multiple assignments
-
-	* parse.y (block_param): ditto for block parameters.
-
-	* parse.y (f_post_arg): mandatory formal arguments after the splat
-	  argument.
-
-	* parse.y (new_args_gen): generate nodes for mandatory formal
-	  arguments after the splat argument.
-
-	* eval.c (rb_eval): dispatch mandatory formal arguments after the
-	  splat argument.
-
-Thu Jun  1 11:33:32 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_getcwd): set errno if not set.
-	  fixed [ruby-list:42346]
-
-Thu Jun  1 00:45:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (args): allow more than one splat in the argument list.
-
-Wed May 31 18:38:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (method_call): allow aref [] to accept all kind of
-	  method argument, including assocs, splat, and block argument.
-
-	* eval.c (SETUP_ARGS0): prepare block argument as well.
-
-Tue May 30 18:13:53 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Integer): remove Integer#gcd2. [ruby-core:07931]
-
-Mon May 29 22:40:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (error_line): print receivers true/false/nil specially.
-
-	* eval.c (rb_proc_yield): handles parameters in yield semantics.
-
-	* eval.c (nil_yield): gives LocalJumpError to denote no block
-	  error.
-
-	* io.c (rb_io_getc): now takes one-character string.
-
-Sat May 27 22:46:38 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): save and restore block in the current frame.
-	  fixed: [ruby-core:07833], [ruby-talk:191639]
-
-Sat May 27 11:29:46 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): remove extinit files if no statically linked
-	  extensions.
-
-Fri May 26 19:56:46 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_hash): use FNV-1a hash from Fowler/Noll/Vo
-	  hashing algorithm.
-
-Fri May 26 09:05:11 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.h, lib/mkmf.rb (create_header): clear command line options for
-	  macros moved to extconf.h.
-
-	* ext/extmk.rb (extract_makefile, extmk): made RUBY_EXTCONF_H and
-	  EXTSTATIC permanent.
-
-	* ext/{dbm,digest/*,socket,zlib}/extconf.rb: used $defs and $INCFLAGS.
-
-	* {bcc32,win32,wince}/Makefile.sub (COMPILE_C, COMPILE_CXX): added
-	  $(INCFLAGS).
-
-	* lib/mkmf.rb (configuration): add $defs unless extconf.h was created.
-
-Thu May 25 01:52:07 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (pkg_config): particular config commands support.
-
-	* ext/extmk.rb: deal with $static set in extconf.rb.
-
-	* mkconfig.rb: merge multiple entries to an entry with multiple lines.
-
-	* lib/mkmf.rb: allow a series of commands to link.
-
-	* win32/Makefile.sub: embed manifests.
-
-	* win32/setup.mak: suffix OS name by runtime version.
-
-Wed May 24 23:52:11 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_install_sh): ignore dummy install-sh.
-	  [ruby-talk:193876]
-
-Wed May 24 17:55:13 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_aref): str[0] now returns 1 character string,
-	  instead of a fixnum.	[Ruby2]
-
-	* parse.y (parser_yylex): ?c now returns 1 character string,
-	  instead of a fixnum.	[Ruby2]
-
-	* string.c (rb_str_aset): no longer support fixnum insertion.
-
-Wed May 24 03:10:44 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb
-	  (OpenSSL::SSL::SocketForwarder#setsockopt,getsockopt): typo fixed.
-
-Mon May 22 16:32:03 2006  Tanaka Akira  <akr@m17n.org>
-
-	* rubyio.h (rb_io_set_nonblock): declared.
-
-	* io.c (rb_io_set_nonblock): new function.
-	  (io_getpartial): nonblocking read support.
-	  (io_read_nonblock): new method: IO#read_nonblock.
-	  (io_write_nonblock): new method: IO#write_nonblock.
-
-	* ext/socket/socket.c (s_accept): retry for EWOULDBLOCK.
-	  revert [ruby-talk:113807].
-	  (sock_connect_nonblock): new method: Socket#connect_nonblock.
-	  (sock_accept_nonblock): new method: Socket#accept_nonblock.
-	  (sock_recvfrom_nonblock): new method: Socket#recvfrom_nonblock.
-
-	  [ruby-core:7917]
-
-Mon May 22 15:57:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (umethod_bind): should not update original class.
-	  [ruby-dev:28636]
-
-Mon May 22 13:38:57 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ev_const_get): should support constant access from
-	  within instance_eval().  [ruby-dev:28327]
-
-Sun May 21 09:50:31 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* regexec.c: add STK_NULL_CHECK_END to IS_TO_VOID_TARGET().
-	  [ruby-list:42234]
-
-Thu May 18 22:37:20 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/config.rb (WEBrick::Config::HTTP): add new parameters,
-	  :InputBufferSize and :OutputBufferSize.
-
-	* lib/webrick/utils.rb (WEBrick::Utils.timeout): add new timeout
-	  method. this implementation is expected to be compatible with
-	  timeout.rb and faster than timeout.rb.
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest#_read_data):
-	  Timeout.timeout is replaced by WEBrick::Utils.timeout.
-
-	* lib/webrick/httprequest.rb: WEBrick::HTTPRequest::BUFSIZE is
-	  replaced by config[:InputBufferSize].
-
-	* lib/webrick/httpresposne.rb: WEBrick::HTTPResponse::BUFSIZE is
-	  replaced by config[:OutputBufferSize].
-
-	* lib/webrick/server.rb: get rid of unnecessary require.
-
-	* test/webrick/test_utils.rb: test for WEBrick::Utils.timeout.
-
-Thu May 18 17:51:32 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_timeval): should round for usec floating
-	  number.  [ruby-core:07896]
-
-	* time.c (time_add): ditto.
-
-Thu May 18 00:42:12 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb, lib/mkmf.rb: use BUILD_FILE_SEPARATOR in Makefiles.
-
-Wed May 17 17:55:26 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (sys_warning): should not call a vararg function
-	  rb_sys_warning() indirectly.	[ruby-core:07886]
-
-Tue May 16 17:23:19 2006  Shin-ichiro HARA  <sinara@blade.nagaokaut.ac.jp>
-
-	* numeric.c (flo_divmod): the first element of Float#divmod should
-	  be an integer. [ruby-dev:28589]
-
-	* test/ruby/test_float.rb: add tests for divmod, div, modulo and remainder.
-
-Tue May 16 15:34:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): should not allow modifying literal
-	  regexps.  frozen check moved from rb_reg_initialize_m as well.
-
-Tue May 16 09:20:16 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): should not modify untainted objects in
-	  safe levels higher than 3.
-
-	* re.c (rb_memcmp): type change from char* to const void*.
-
-	* dir.c (dir_close): should not close untainted dir stream.
-
-	* dir.c (GetDIR): add tainted/frozen check for each dir operation.
-
-Mon May 15 21:37:12 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* re.c (rb_reg_prepare_re): don't use onig_recompile().
-
-Mon May 15 17:42:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_symbol_arg):
-	  typo fixed.  a patch from Florian Gross <florg at florg.net>.
-
-Sat May 13 16:14:05 2006  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (PP.mcall): new method.
-	  (Struct#pretty_print): call Kernel#class and Struct#members even if
-	  overridden.
-	  (Struct#pretty_print_cycle): ditto.
-	  [ruby-core:7865]
-
-Fri May 12 15:54:48 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (EXEC_EVENT_HOOK): trace_func may remove itself from
-	  event_hooks.	no guarantee for arbitrary hook deletion.
-	  [ruby-dev:28632]
-
-Thu May 11 19:57:00 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): differ addition to minimize error.
-	  [ruby-dev:28619]
-
-Thu May 11 18:30:11 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_cipher.c (add_cipher_name_to_ary): should return
-	  value. [ruby-dev:28627]
-
-Thu May 11 18:10:43 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): should not raise ERANGE when the input
-	  string does not have any digits.  [ruby-dev:28629]
-
-Wed May 10 23:40:21 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* oniguruma.h: Version 4.0.3
-
-	* regexec.c: ditto.
-
-Mon May  8 09:10:31 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: add check for OBJ_NAME_do_all_sorted.
-
-	* ext/openssl/ossl_cipher.c (ossl_s_ciphers): new method
-	  OpenSSL::Cipher.ciphers. it returns all the cipher names.
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_init): refine warning message.
-
-	* ext/openssl/lib/openssl/cipher.rb: reimplement without eval() and
-	  add constants AES128, AES192, AES256. [ruby-dev:28610]
-
-	* ext/openssl/lib/openssl/digest.rb: reimplement without eval().
-
-	* test/openssl/test_cipher.rb, test_digest: fix about reimplemented
-	  features.
-
-	* sample/openssl/cipher.rb: rewrite all.
-
-Sun May  7 03:09:51 2006  Stephan Maka  <stephan@spaceboyz.net>
-
-	* lib/resolv.rb (Resolv::DNS::Requester::ConnectedUDP#initialize):
-	  Use AF_INET6 for nameservers containing colons.
-
-Sat May  6 23:40:03 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): should restore old ruby_frame->block.
-	  thanks to ts <decoux at moulon.inra.fr>.  [ruby-core:07833]
-	  also fix [ruby-dev:28614] as well.
-
-Sat May  6 00:38:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (trap): sig should be less then NSIG.  Coverity found
-	  this bug.  a patch from Kevin Tew <tewk at tewk.com>.
-	  [ruby-core:07823]
-
-Thu May  4 22:13:22 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (math_log2): add new method inspired by
-	  [ruby-talk:191237].
-
-	* math.c (math_log): add optional base argument to Math::log().
-	  [ruby-talk:191308]
-
-Thu May  4 02:24:16 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/emitter.c (syck_scan_scalar): avoid accessing
-	  uninitialized array element.	a patch from Pat Eyler
-	  <rubypate at gmail.com>.  [ruby-core:07809]
-
-	* array.c (rb_ary_fill): initialize local variables first.  a
-	  patch from Pat Eyler <rubypate at gmail.com>.	 [ruby-core:07810]
-
-	* ext/syck/yaml2byte.c (syck_yaml2byte_handler): need to free
-	  type_tag.  a patch from Pat Eyler <rubypate at gmail.com>.
-	  [ruby-core:07808]
-
-Wed May  3 02:12:07 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (make_hostent_internal): accept ai_family
-	  check from Sam Roberts <sroberts at uniserve.com>.
-	  [ruby-core:07691]
-
-Mon May  1 17:58:16 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (add_event_call_back): should not
-	  delete event handler when the event name is not entried.
-
-Mon May  1 08:32:10 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_param_ole_type): should return
-	  "unknown type" string when ITypeInfo::GetFuncDesc failed.
-
-Sat Apr 29 22:43:37 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_decode0): should initialize
-	  flag. [ruby-core:07785]
-
-Fri Apr 28 10:53:16 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): should not cut off 18 digits for no
-	  reason.  [ruby-core:07796]
-
-Thu Apr 27 01:38:10 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_fill): internalize local variable "beg" to
-	  pacify Coverity.  [ruby-core:07770]
-
-Wed Apr 26 16:59:24 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_unpack): now supports CRLF newlines.  a patch from
-	  <tommy at tmtm.org>.	[ruby-dev:28601]
-
-Wed Apr 26 16:55:19 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* applied code clean-up patch from Stefan Huehner
-	  <stefan at huehner.org>.  [ruby-core:07764]
-
-Tue Apr 25 18:00:05 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (delete_slaves): maybe increment the reference
-	  count of a NULL Tcl_Obj [ruby-core:07759].
-
-Tue Apr 25 07:55:31 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/jcode.rb (String::tr_s): should have translated non
-	  squeezing character sequence (i.e. a character) as well.  thanks
-	  to Hiroshi Ichikawa <gimite at gimite.ddo.jp> [ruby-list:42090]
-
-Fri Apr 21 15:19:13 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (lib_eventloop_ensure): refer freed pointer
-	  [ruby-core:07744] and memory leak.
-
-Fri Apr 21 12:14:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: document update patch from Sam Roberts
-	  <sroberts at uniserve.com>.  [ruby-core:07701]
-
-Thu Apr 20 08:43:54 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Integer): need not to remove gcd2.  a patch from
-	  NARUSE, Yui <naruse at airemix.com>.	[ruby-dev:28570]
-
-Wed Apr 19 13:55:27 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): too much NEW_LIST()
-
-	* eval.c (SETUP_ARGS0): remove unnecessary access to nd_alen.
-
-Wed Apr 19 11:57:04 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): use ARGSCAT for NODE_OP_ASGN1.
-	  [ruby-dev:28585]
-
-	* parse.y (arg): use NODE_ARGSCAT for placeholder.
-
-Wed Apr 19 11:13:17 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/getoptlong.rb (GetoptLong::get): RDoc update patch from
-	  mathew <meta at pobox.com>.  [ruby-core:07738]
-
-Wed Apr 19 10:13:27 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_set): raise error when no target klass is
-	  supplied.  [ruby-dev:28582]
-
-Tue Apr 18 17:40:37 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: add a binding to a container for a slave IP.
-
-	* ext/tk/lib/tk.rb: update RELEASE_DATE.
-
-	* ext/tk/tcltklib.c: forget to reset a Tcl interpreter.
-
-	* ext/tk/stubs.c: fix potential bugs about handling rb_argv0.
-
-Mon Apr 10 01:03:10 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* prec.c (prec_prec_f): documentation patch from
-	  <gerardo.santana at gmail.com>.  [ruby-core:07689]
-
-Sat Apr  8 02:34:34 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_pow): second operand may be too big even if
-	  it's a Fixnum.  [ruby-talk:187984]
-
-Sat Apr  8 02:12:38 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* README.EXT: update symbol description.  [ruby-talk:188104]
-
-Sat Apr  8 18:06:28 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_METHOD#inspect,
-	  WIN32OLE_PARAM#inspect.
-
-	* test/win32ole/test_win32ole_method.rb: ditto.
-
-	* add test/win32ole/test_win32ole_param.rb.
-
-Fri Apr  7 22:11:30 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(foletypelib_initialize): WIN32OLE_TYPELIB.new
-	  accepts OLE file.
-
-	* test/win32ole/test_win32ole_typelib.rb(test_initialize): ditto.
-
-Thu Apr  6 23:28:47 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* COPYING: explicitly note GPLv2.  [ruby-talk:187922]
-
-Thu Apr  6 16:43:06 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* intern.h (rb_obj_instance_exec, rb_mod_module_exec): add declaration.
-
-Thu Apr  6 11:18:37 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/panedwindow.rb: lack of arguments. [ruby-core:7681]
-
-Thu Apr  6 01:04:47 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: fix SEGV when embedding to an application.
-	  [ruby-core:7600]
-
-	* ext/tk/tcltklib.c: fix SEGV at exit. [ruby-talk:186489]
-
-	* ext/tk/tkutil/tkutil.c: follow to changing specification of
-	  instance_eval on ruby-1.9.x.
-
-	* ext/tk/lib/tk.rb: ditto.
-
-	* ext/tk/lib/multi-tk.rb: ditto.
-
-	* ext/tk/lib/tk.rb: remove warning about redefinition of methods.
-
-	* ext/tk/lib/tk/variable.rb: remove warning about unseting Tcl
-	  variables.
-
-Wed Apr  5 00:22:54 2006  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb: use a subclass for instantiation except
-	  methods take pathname argument.  suggested by Evan Phoenix.
-	  [ruby-core:7618]
-
-Tue Apr  4 22:15:41 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: remove some obsolete syntax rules (unparenthesized
-	  method calls in argument list).
-
-Sat Apr  1 15:11:27 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_TYPE#inspect,
-	  WIN32OLE_VARIABLE#inspect
-
-	* remove ext/win32ole/tests/testOLEVARIABLE.rb, testOLETYPE.rb
-	  testOLETYPELIB.rb.
-
-	* testall.rb: ditto.
-
-	* add test/win32ole
-
-Fri Mar 31 14:24:55 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (enumerator_with_index): removed suspicious return
-	  statement.
-
-Wed Mar 29 23:06:48 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke): change the behavior of
-	  WIN32OLE#[], WIN32OLE#[]=. These methods invoke DISPID_VALUE.
-
-	* ext/win32ole/sample/excel2.rb: ditto.
-
-	* ext/win32ole/tests/testWIN32OLE.rb: ditto.
-
-Wed Mar 29 10:11:31 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_each_char_to_hex, encode_fallback_subchar,
-	  e2w_conv): support C90 compiler.
-
-Mon Mar 27 22:45:37 2006  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/{nkf.c, utf8tbl.c}: imported nkf 2.0.6.
-	  * Add --ic / --oc option and mapping tables.
-	  * Add fallback option.
-	  * Add --no-best-fit-chars option.
-	  * Fix some bugs.
-
-	* ext/nkf/nkf.c (nkf_split_options): added for parse option string.
-
-	* ext/nkf/lib/kconv.rb (Kconv.to*): add -m0.
-	  Note that Kconv.to* still imply -X.
-
-	* ext/nkf/test.rb: Removed.  Obsolete by test/nkf.
-
-	* ext/.document: enabled documents in nkf and kconv
-
-	* ext/nkf/nkf.c, ext/nkf/lib/kconv.rb: Add rdoc.
-
-Mon Mar 27 03:17:21 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): insecure calling should be checked for non
-	  NODE_SCOPE method invocations too.
-
-	* eval.c (rb_alias): should preserve the current safe level as
-	  well as method definition.
-
-Sun Mar 26 22:02:51 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* re.c: refactoring for options.
-
-	* parse.y: ditto.
-
-Fri Mar 24 21:11:02 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* re.c (match_aref): RDoc description updated.
-
-	* string.c (rb_str_sub): ditto.
-
-	* string.c (rb_str_gsub): ditto.
-
-Fri Mar 24 17:20:03 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_f_sleep): remove RDoc description about SIGALRM
-	  which is not valid on the current implementation. [ruby-dev:28464]
-
-Thu Mar 23 21:40:47 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* re.c (rb_reg_regsub): prohibit \1, \2 ...\9 in replaced string
-	  for named regex pattern.
-
-Thu Mar 23 21:06:23 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* oniguruma.h: Version 4.0.2
-
-	* regparse.c: ditto.
-
-	* regcomp.c ditto.
-
-	* regerror.c: ditto.
-
-Thu Mar 23 10:47:03 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (method_missing): should support argument splat in
-	  super.  a bug in combination of super, splat and
-	  method_missing.  [ruby-talk:185438]
-
-Thu Mar 23 00:01:32 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* re.c (rb_reg_regsub): add back reference by name \k<name> in
-	  replace string.
-
-	* re.h: add regexp argument to rb_reg_regsub().
-
-	* string.c (rb_str_sub_bang): ditto.
-
-	* string.c (str_gsub): ditto.
-
-Tue Mar 21 22:14:01 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* re.c (match_alloc): initialize member regexp.
-
-	* re.c (match_aref): add String and Symbol argument. [ruby-dev:28448]
-
-	* re.h: add member regexp to RMatch.
-
-	* gc.c (gc_mark_children): add gc_mark() to regexp member.
-
-Mon Mar 20 12:05:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: Solaris SunPro compiler -rapth patch from
-	  <kuwa at labs.fujitsu.com>.  [ruby-dev:28443]
-
-Mon Mar 20 11:12:38 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (folevariant_value): could not compile
-	  with C90 compiler.
-
-Mon Mar 20 09:40:23 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: remove enable_rpath=no for Solaris.
-	  [ruby-dev:28440]
-
-Sun Mar 19 09:46:30 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_val2olevariantdata): change behavior
-	  of converting	 OLE Variant object with VT_ARRAY|VT_UI1 and Ruby
-	  String object.
-
-	* ext/win32ole/win32ole.c (folevariant_value): ditto.
-
-	* ext/win32ole/tests/testOLEVARIANT.rb: ditto.
-
-Wed Mar 15 16:51:11 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): support libraries without *.so.
-
-Wed Mar 15 16:39:29 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c, ext/openssl/ossl_nsspki.c: should use
-	  "rb_str_new(0, 0)" to make empty string.
-
-Sun Mar 12 17:02:10 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(ole_val2olevariantdata): support VT_ARRAY in
-	  WIN32OLE_VARIANT.new().
-
-	* ext/win32ole/tests/testOLEVARIANT.rb: ditto.
-
-	* ext/win32ole/tests/testOLEPARAM.rb: test method name should not be
-	  duplicated.
-
-Sat Mar 11 14:24:06 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.1: a clarification patch from David Lutterkort
-	  <dlutter at redhat.com>.  [ruby-core:7508]
-
-Sun Mar  5 18:40:58 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: do not repeat command options.
-
-Sun Mar  5 18:35:03 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (send_request_with_body): #content_type never
-	  return false, use #main_type instead. [ruby-core:07476]
-
-Sat Mar  4 15:26:40 2006  Tanaka Akira  <akr@m17n.org>
-
-	* gc.c (id2ref): fix symbol test.
-
-Sat Mar  4 01:08:07 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc/ri/ri_paths.rb (RI::Paths): adding paths from rubygems
-	  directories.	a patch from Eric Hodel <drbrain at segment7.net>.
-	  [ruby-core:07423]
-
-Fri Mar  3 17:59:00 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_clear_cache_by_class): clearing wrong cache.
-
-Fri Mar  3 21:22:42 2006  Tanaka Akira  <akr@m17n.org>
-
-	* lib/fileutils.rb (FileUtils.cp_r): implement :remove_destination
-	  option.
-
-	* ext/extmk.rb: use :remove_destination to install extension libraries
-	  to avoid SEGV.  [ruby-dev:28417]
-
-Fri Mar  3 14:41:04 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/dl/.cvsignore: ignore callback.h.
-
-	* ext/ripper/.cvsignore: ignore eventids2table.c.
-
-	* ext/socket/.cvsignore: ignore constants.h.
-
-Thu Mar  2 18:58:18 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_fd_writable): should not re-schedule output
-	  from KILLED thread (must be error printing).
-
-Thu Mar  2 09:12:05 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_flatten_bang): allow specifying recursion
-	  level.  [ruby-talk:182170]
-
-	* array.c (rb_ary_flatten): ditto.
-
-Thu Mar  2 08:02:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (add_heap): a heap_slots may overflow.  a patch from Stefan
-	  Weil <weil at mail.berlios.de>.
-
-Wed Mar  1 17:13:37 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): use separate cache for fcall/vcall
-	  invocation.
-
-	* eval.c (rb_eval): NODE_FCALL, NODE_VCALL can call local
-	  functions.
-
-	* eval.c (rb_mod_local): a new method to specify newly added
-	  visibility "local".
-
-	* eval.c (search_method): search for local methods which are
-	  visible only from the current class.
-
-	* class.c (rb_class_local_methods): a method to list local methods.
-
-Thu Mar  2 17:54:45 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* gc.c: commited magic for reducing RVALUE size on windows. (24->20byte)
-	  [ruby-core:7474]
-
-Thu Mar  2 14:12:26 2006  Tanaka Akira  <akr@m17n.org>
-
-	* gc.c: align VALUE with sizeof(RVALUE) globally.
-	  (is_pointer_to_heap): check alignment out of loop.
-	  (id2ref): avoid collision between symbols and objects.
-	  (rb_obj_id): ditto.  moved from object.c.
-	  [ruby-talk:178364] [ruby-core:7305]
-
-Thu Mar  2 12:55:16 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (filetime_to_unixtime): should set tm_isdst to -1.
-	  stat() didn't treat daylight saving time property on WinNT.
-	  [ruby-talk:182100]
-
-Wed Mar  1 00:15:51 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/rdoc/parsers/parse_rb.rb (read_escape): could not handle /\^/.
-	  merged Mr. Ishizuka's lib/irb/ruby-lex.rb 's patch rev 1.29.
-	  [ruby-talk:181631] [ruby-dev:28404]
-
-Tue Feb 28 19:32:14 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): add BasicObject class as a top level
-	  BlankSlate class.
-
-Mon Feb 27 00:19:16 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (SYM2ID): should not cast to signed long.
-	  [ruby-core:07414]
-
-Fri Feb 24 20:21:38 2006  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/drbtest.rb (add_service_command): quote pathnames in the
-	  server's command line for space contained directory names.
-	  Thanks, arton. [ruby-dev:28386]
-
-Fri Feb 24 12:10:07 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: install *.exe.manifest and *.dll.manifest if exist.
-	  It's for VC++8.
-
-Fri Feb 24 11:17:45 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (NtInitialize): need to set a handler for VC++8.
-
-Thu Feb 23 22:39:59 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/Makefile.sub: use borlndmm.dll if possible. bcc32's RTL internal
-	  memory manager cannot handle large memory block properly.
-	  ex: 10000.times { "" << "." * 529671; GC.start } # crash
-	  [ruby-dev:28230]
-
-Thu Feb 23 13:23:03 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* eval.c (SETUP_ARGS0): fixed memory corruption. [ruby-dev:28360]
-
-Wed Feb 22 21:16:55 2006  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#each_filename): use split_names properly.
-
-Wed Feb 22 16:24:05 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/webrick/test_cgi.rb: should support platforms which search
-	  library path from the interpreter's path.
-	  And, support test without install incidentally.
-
-Wed Feb 22 14:21:03 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bignorm): x may not be a bignum.  [ruby-dev:28367]
-
-Wed Feb 22 09:22:40 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_alloc): add proper check for creation of a lambda
-	  without a block.
-
-Tue Feb 21 02:07:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_arglist): should set command_start = Qtrue for
-	  command body.  [ruby-talk:180648]
-
-Mon Feb 20 22:30:17 2006  Tanaka Akira  <akr@m17n.org>
-
-	* mkconfig.rb: alias Config to RbConfig for compatibility.
-
-Mon Feb 20 18:21:41 2006  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (rb_io_reopen): flush before reopening a file.
-	  reported by Mathieu Bouchard.  [ruby-core:7396]
-
-Mon Feb 20 17:29:50 2006  Tanaka Akira  <akr@m17n.org>
-
-	* mkconfig.rb: generate RbConfig instead of Config.
-
-	* instruby.rb, rubytest.rb, runruby.rb, bcc32/Makefile.sub,
-	  ext/extmk.rb, ext/dl/extconf.rb, ext/iconv/charset_alias.rb,
-	  lib/mkmf.rb, lib/rdoc/ri/ri_paths.rb,
-	  lib/webrick/httpservlet/cgihandler.rb,
-	  test/dbm/test_dbm.rb, test/gdbm/test_gdbm.rb,
-	  test/ruby/envutil.rb, test/soap/calc/test_calc_cgi.rb,
-	  test/soap/header/test_authheader_cgi.rb, test/soap/ssl/test_ssl.rb,
-	  win32/mkexports.rb, win32/resource.rb: Use RbConfig instead of
-	  Config.
-
-Mon Feb 20 13:46:19 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/find.rb: should raise ENOENT if root entry does not exist,
-	  without opening it. [ruby-dev:28345]
-
-Mon Feb 20 12:27:53 2006  Kent Sibilev  <ksruby@gmail.com>
-
-	* lib/rational.rb (Integer::gcd): small typo fix.
-	  [ruby-core:07395]
-
-Mon Feb 20 10:03:59 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_get_0): Object should have been the lowest
-	  in const lookup precedence.  [ruby-dev:28343]
-
-Mon Feb 20 09:17:11 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator): should not delegate "funcall".
-
-Mon Feb 20 09:13:42 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb (WEBrick::HTTPServlet::CGIHandler):
-	  qualify the access for Config constant.  [ruby-dev:28338]
-
-	* lib/resolv.rb (Resolv::DNS::Resource::IN::A): qualify
-	  ClassValue.  [ruby-dev:28338]
-
-Mon Feb 20 01:05:27 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rational.rb (Integer::gcd): replaced by gcd4 in
-	  [ruby-core:07390].  [ruby-core:07377]
-
-Mon Feb 20 00:57:02 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.h (OSSL_Debug): should not use __func__.
-	  [ruby-dev:28339]
-
-Mon Feb 20 00:13:49 2006  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: add :ssl_verify_mode option.
-	  suggested by Will Glynn.
-
-	* lib/open-uri.rb: add :ssl_ca_cert option.
-
-Sun Feb 19 04:46:29 2006  Guy Decoux  <ts@moulon.inra.fr>
-
-	* eval.c: initial value for block_unique must be 1.
-	  [ruby-talk:180420]
-
-Sat Feb 18 23:58:26 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tracer.rb (Tracer::Tracer.add_filter): turn on tracer mode
-	  only when caller() level size is one.  [ruby-core:07389]
-
-	* lib/rdoc/parsers/parse_rb.rb: need not to require "tracer".
-	  [ruby-core:07389]
-
-	* sample/rtags.rb: ditto.
-
-Sat Feb 18 21:16:27 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_obj_instance_eval): RDoc description updated.  a
-	  patch from Ozgur Murat Homurlu <ozgurmurath at gmail.com>.
-	  [ruby-core:07381]
-
-Sat Feb 18 01:01:17 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_get_0): skip ruby_wrapper in const search
-	  to give it lower priority (just above Object).  need not to
-	  change rb_const_defined_0() since it's only a precedence matter;
-	  they are defined anyway.
-
-Sat Feb 18 00:22:39 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tracer.rb: merged a minor clarification patch from Daniel
-	  Berger <Daniel.Berger at qwest.com>.  [ruby-core:07376]
-
-Fri Feb 17 17:30:20 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ev_const_get): simplified using rb_const_get_fallback().
-
-	* eval.c (ev_const_defined): adopt to ev_const_get() using
-	  rb_const_defined_fallback().
-
-	* variable.c (rb_const_get_fallback): new function to implement
-	  constant search.
-
-	* variable.c (rb_const_defined_fallback): new function to
-	  implement constant definition check.
-
-	* variable.c (rb_const_get_0): adopt to new behavior.  constants
-	  are looked up in the order of: current class, super classes (but
-	  Object), lexically external classes/modules, and Object.
-
-	* variable.c (rb_const_defined_0): ditto.
-
-Fri Feb 17 11:20:53 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* util.c (ruby_strtod): Float("1e") should fail. [ruby-core:7330]
-
-	* pack.c (EXTEND32): unpack("l") did not work where sizeof(long) != 4.
-	  [ruby-talk:180024]
-
-	* pack.c (pack_unpack): fixed integer overflow on template "w".
-	  [ruby-talk:180126]
-
-Fri Feb 17 09:39:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_wait_for): sleep should always sleep for
-	  specified amount of time.  [ruby-talk:180067]
-
-Wed Feb 15 16:52:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): NODE_OP_ASGN1 should allow splat in its
-	  argument list.  [ruby-core:07366]
-
-	* parse.y (arg): avoid unnecessary extra argument.
-	  [ruby-core:07366]
-
-	* eval.c (rb_eval): honor visibility on OP_ASGN1 and
-	  OP_ASGN2. [ruby-core:07366]
-
-Wed Feb 15 15:20:23 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (error_line): remove void control path.  [ruby-dev:28335]
-
-Wed Feb 15 10:09:51 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (yield_under_i): should not pass self as an argument to
-	  the block for instance_eval.  [ruby-core:07364]
-
-Wed Feb 15 09:20:35 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_obj_instance_eval): should be no singleton classes for
-	  true, false, and nil.  [ruby-dev:28186]
-
-Tue Feb 14 20:26:00 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_each): return self if no block is
-	  given.  [yarv-dev:882]
-
-Tue Feb 14 18:48:33 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (DMETHOD_P): accessing wrong frame.  [ruby-dev:28181]
-
-	* eval.c (proc_invoke): preserve FRAME_DMETH flag.
-
-Tue Feb 14 15:15:22 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/zlib/zlib.c: suppress warning on test/zlib. [ruby-dev:28323]
-
-Tue Feb 14 13:47:22 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_utime): drop read-only attribute before
-	  changing file time.
-
-Tue Feb 14 13:38:01 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): should define HAVE_LONG_LONG with
-	  VC++8.
-
-Tue Feb 14 11:42:38 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (search_time_t): support non 32bit time_t environments.
-
-	* win32/Makefile.sub (config.h): VC++8 has ``long long'' type.
-
-	* win32/Makefile.sub (config.h): VC++8's time_t is 64bit value.
-
-Mon Feb 13 18:01:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (copy_node_scope): remove duplicated semicolons at end.
-	  a patch from KIMURA Koichi <kimura.koichi at canon.co.jp>.
-	  [ruby-dev:28332]
-
-	* eval.c (VIS_MODE): remove unnecessary argument.
-	  [ruby-dev:28332]
-
-Mon Feb 13 13:49:48 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_parse_string): mention "regexp" in a error
-	  message.  a patch from Mauricio Fernandez <mfp at acm.org>
-	  [ruby-core:07340]
-
-Mon Feb 13 00:01:32 2006  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* oniguruma.h: Version 4.0.1
-
-	* regparse.c (onig_free_shared_cclass_table): fix memory leaks.
-
-	* regcomp.c (optimize_node_left): change from IS_POSIXLINE() to IS_MULTILINE().
-
-	* regint.h: rename ANCHOR_ANYCHAR_STAR_PL to ANCHOR_ANYCHAR_STAR_ML.
-
-	* regparse.h: ditto.
-
-	* regexec.c: ditto.
-
-Sat Feb 11 21:57:29 2006  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE.create_guid.
-
-	* ext/win32ole/tests/testWIN32OLE.rb: ditto.
-
-Sat Feb 11 01:57:44 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_autoload): check if ruby_cbase is nil (during
-	  instance_eval for objects cannot have singleton classes,
-	  e.g. fixnums and symbols).  [ruby-dev:28178]
-
-Fri Feb 10 12:31:05 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should support NODE_ZSUPER in NODE_ITER.
-	  [ruby-dev:28326]
-
-	* eval.c (ZSUPER_ARGS): support macro.
-
-Wed Feb  8 10:26:06 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): turn on during_gc while
-	  invoking finalizers.
-
-	* gc.c (rb_gc_finalize_deferred): ditto.
-
-Tue Feb  7 23:03:13 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/zlib/zlib.c: should not access ruby objects in finalizer.
-	  [ruby-dev:28286]
-
-Tue Feb  7 18:42:00 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_write_error2): use fwrite(3) if rb_stderr is not
-	  updated or is already freed.  [ruby-dev:28313]
-
-Mon Feb  6 16:02:51 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* file.c (rb_thread_flock): ERROR_NOT_LOCKED is not an error on Cygwin.
-	  In such situation, flock() should return 0.
-
-Mon Feb  6 14:36:29 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (error_line): include the class name of a surrounding
-	  method in error position description.
-
-Mon Feb  6 00:14:57 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_find_index): a new method Enumerable#find_index.
-	  [ruby-talk:178495]
-
-Sun Feb  5 23:29:31 2006  Tanaka Akira  <akr@m17n.org>
-
-	* ruby.h (struct RStruct): embed 3 or less elements structs.
-	  (RSTRUCT_LEN): defined for accessing struct members.
-	  (RSTRUCT_PTR): ditto.
-
-	* struct.c: use RSTRUCT_LEN and RSTRUCT_PTR.
-	  (struct_alloc): allocate small structs in embedded format.
-	  (rb_struct_init_copy): ditto.
-
-	* gc.c (gc_mark_children): use RSTRUCT_LEN and RSTRUCT_PTR.
-	  (obj_free): ditto.
-
-	* marshal.c (w_object): use RSTRUCT_LEN and RSTRUCT_PTR.
-
-Sun Feb  5 21:01:49 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* numeric.c (fix_to_s): removed workaround for radix 2. Historically,
-	  rb_fix2str could only handle radix 8, 10, 16. (Rev1.37) But for now,
-	  it can handle radix 2..36. [ruby-Bugs#3438] [ruby-core:7300]
-
-Sun Feb  5 18:49:00 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (add_field, get_fields): keep 1.8.2
-	  compatibility.  This patch is contributed by Rob Pitt.
-
-Sun Feb  5 16:33:50 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/mkmf.rb (create_makefile): Kernel#sub! was removed on HEAD.
-
-Sun Feb  5 14:26:54 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/pstore.rb: should return default value if name is not found.
-	  [ruby-core:7304]
-
-	* lib/pstore.rb: should raise PStore::Error if not in transaction.
-
-Sat Feb  4 22:51:43 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c: apply the FreeBSD getcontext/setcontext workaround
-	  only before FreeBSD 7-CURRENT.
-
-Sat Feb  4 21:10:06 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (LK_ERR): ERROR_NOT_LOCKED is not an error.
-	  In such situation, flock() should return 0.
-
-Sat Feb  4 15:52:56 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* numeric.c (fix_to_s): (2**32).to_s(2) fails with exception where
-	  sizeof(int) == 4 < sizeof(long). [ruby-core:7300]
-
-Sat Feb  4 15:02:05 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* oniguruma.h: merge Oniguruma 4.0.0  [ruby-dev:28290]
-
-Fri Feb  3 19:25:53 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ruby.h: fixed prototype.
-
-	* ext/syck/rubyext.c: defined symbol ID as global variable as others.
-
-Fri Feb  3 17:57:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c: unify ruby_class (for method definition) and ruby_cbase
-	  (for constant reference).
-
-Fri Feb  3 15:02:10 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/syck.c (syck_move_tokens): should reset p->cursor or etc
-	  even if skip == 0. This causes buffer overrun.
-	  (ex: YAML.load('--- "..' + '\x82\xA0' * 511 + '"'))
-
-Fri Feb  3 00:01:31 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/emitter.c (syck_emitter_write): should not set '\0' on
-	  emitter's marker. if marker points to the end of buffer, this is
-	  buffer overrun. (ex: YAML.dump("." * 12288))
-
-Thu Feb  2 17:13:01 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser#get_tk): added
-	  support of :'string' style Symbol.
-
-Thu Feb  2 16:01:24 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): use TMP_ALLOC() instead of allocating
-	  a temporary array object.
-
-	* eval.c (eval): need not to protect $SAFE value.
-	  [ruby-core:07177]
-
-	* error.c (Init_Exception): change NameError to direct subclass of
-	  Exception so that default rescue do not handle it silently.
-
-Thu Feb  2 14:45:53 2006  Ville Mattila  <ville.mattila@stonesoft.com>
-
-	* configure.in: The isinf is not recognized by autoconf
-	  library guesser on solaris 10. [ruby-core:7138]
-
-Wed Feb  1 22:01:47 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* configure.in, hash.c (ruby_setenv): use setenv(3) and unsetenv(3)
-	  where they are supported. modifying environ variable seems to
-	  segfault solaris 10. [ruby-core:7276] [ruby-dev:28270]
-
-	* ruby.c (set_arg0): if use setenv(3), environ space cannot be used
-	  for altering argv[0].
-
-Tue Jan 31 14:46:28 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_select): update RDoc description.
-	  [ruby-core:7254]
-
-Tue Jan 31 11:58:51 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: add MultiTkIp#eval and bg_eval.
-
-	* ext/tk/lib/tk/namespace.rb: TkNamespace#eval was enbugged at the
-	  last commit. Now it will return a proper object.
-
-Tue Jan 31 08:07:02 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_upto): return an enumerator if no block is
-	  attached to the method.
-
-	* numeric.c (int_downto): ditto.
-
-	* numeric.c (int_dotimes): ditto.
-
-	* enum.c (enum_first): new method Enumerable#first to take first n
-	  elements from an enumerable.
-
-	* enum.c (enum_group_by): new method Enumerable#group_by that
-	  groups enumerable values according to their block values.
-
-Tue Jan 31 00:08:22 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c (syck_resolver_transfer): workaround for SEGV.
-	  ex: ruby -ryaml -e 'YAML.load("!map:B {}")' [ruby-core:7217]
-
-Sat Jan 28 07:49:30 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/rdoc/usage.rb: support "a:0:33" style caller[-1]. In this case
-	  file name is "a:0". I don't know this really happens though...
-	  [ruby-Bugs:3344]
-
-Thu Jan 26 15:55:52 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: turn on do_not_reverse_lookup by default.
-
-Wed Jan 25 22:29:04 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, dln.c, file.c, intern.h, missing.h (eaccess): use
-	  system routine if provided.  fixed: [ruby-core:07195]
-
-Sun Jan 22 23:27:13 2006  Go Noguchi  <gonoguti@yahoo.co.jp>
-
-	* lib/test/unit/autorunner.rb (process_args): ignore arguments after
-	  '--' so that test scripts can handle them.  fixed: [ruby-dev:28258]
-
-Sun Jan 22 22:09:52 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (POST_GETCONTEXT): define separately from PRE_GETCONTEXT on
-	  IA64 to avoid reusing variable address.
-
-Sun Jan 22 20:03:35 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (ruby_setjmp): define PRE_GETCONTEXT and POST_GETCONTEXT
-	  instead of FUNCTION_CALL_MAY_RETURN_TWICE.
-	  define PRE_GETCONTEXT to clear carry flag for workaround of
-	  FreeBSD/i386 getcontext/setcontext bug.
-	  [ruby-dev:28263]
-
-Thu Jan 19 22:19:18 2006  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mv): should remove file after copying.
-	  [ruby-dev:28223]
-
-Wed Jan 18 23:37:06 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (FUNCTION_CALL_MAY_RETURN_TWICE): don't clobber %l7 of SPARC
-	  if enable-shared.
-	  (ruby_setjmp): call FUNCTION_CALL_MAY_RETURN_TWICE after getcontext
-	  too.
-	  reported by Pav Lucistnik and Marius Strobl.
-	  http://lists.freebsd.org/pipermail/freebsd-sparc64/2006-January/003739.html
-
-Tue Jan 17 23:59:56 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_mod_const_get, rb_mod_const_defined): added optional
-	  flag to search ancestors, which is defaulted to true.
-	  fixed: [ruby-talk:175899]
-
-	* eval.c (rb_mod_method_defined): ditto.
-
-Tue Jan 17 11:31:47 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.mak (MAKE): workaround for nmake 8.
-
-Tue Jan 17 11:06:19 2006  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: invoke .bat via shell. workaround for nmake 8.
-
-Mon Jan 16 10:13:38 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/emitter.c (syck_emit_seq, syck_emit_map, syck_emit_item):
-	  should output complex key mark even if map's key is empty seq/map.
-	  [ruby-core:7129]
-
-Sat Jan 14 03:38:54 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* file.c (rb_file_s_chmod): avoid warning where sizeof(int) !=
-	  sizeof(void*).
-
-Fri Jan 13 19:26:15 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/rdoc/diagram.rb:
-	    - properly quote bare element attributes
-	    - terminates dangling elements (e.g. <img>, <br>, <link>, etc)
-	    - converts "CVS" to the more HTML-friendly acronym element
-	    - adds missing type attributes to style elements
-
-	  based on Paul Duncan's patch <pabs@pablotron.org> [ruby-core:7028]
-
-	* lib/rdoc/generators/html_generator.rb: ditto.
-	* lib/rdoc/generators/template/html/hefss.rb: ditto.
-	* lib/rdoc/generators/template/html/html.rb: ditto.
-	* lib/rdoc/generators/template/html/kilmer.rb: ditto.
-
-Thu Jan 12 11:53:08 2006  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tkballoonhelp.rb: [bug fix] couldn't add to a widget
-	  which is constructed with TkComposite module.
-	  [new feature] support 'command' option which is called just before
-	  popping up the balloon help.
-
-Wed Jan 11 00:12:29 2006  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb (ERB::Compiler): add instance variable @insert_cmd to
-	  change <%='s behavior.
-
-Tue Jan 10 19:42:33 2006  Tanaka Akira  <akr@m17n.org>
-
-	* gc.c (garbage_collect): mark ruby_current_node.
-	  if an exception is raised in a finalizer written in C called by
-	  rb_gc_call_finalizer_at_exit, ruby_set_current_source may use
-	  collected ruby_current_node and mark_source_filename may corrupt
-	  memory.
-
-Tue Jan 10 13:30:34 2006  akira yamada  <akira@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_resolver_transfer): should be able to load
-	  !ruby/object:Bignum syntax 1.8.3 dumped. [ruby-core:6159]
-
-Tue Jan 10 12:47:41 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/yaml/rubytypes.rb (Fixnum): Bignum could not be loaded in
-	  ruby 1.8.3/1.8.4. [ruby-core:6115]
-
-	* lib/yaml/rubytypes.rb (Numeric): Subclass of Numeric could not
-	  be dumped properly. [ruby-core:7047]
-
-Tue Jan 10 12:00:48 2006  Aaron Schrab  <aaron @nospam@ schrab.com>
-
-	* lib/yaml/rubytypes.rb (Symbol#yaml_new): YAML loading of quoted
-	  Symbols broken. [ruby-Bugs:2535]
-
-Tue Jan 10 07:26:52 2006  Tanaka Akira  <akr@m17n.org>
-
-	* gc.c (gc_stress): renamed from always_gc and enabled by default.
-	  (gc_stress_get): new function for GC.stress.
-	  (gc_stress_set): new function for GC.stress=.
-
-Mon Jan  9 19:58:56 2006  arton  <artonx@yahoo.co.jp>
-
-	* ext/zlib/extconf.rb: zlib compiled DLL version 1.2.3 distributed by
-	  http://www.zlib.net/ has zdll.lib. [ruby-dev:28209]
-
-Mon Jan  9 14:25:00 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/Makefile.sub (OPTFLAGS): I have experienced trouble on y- flag,
-	  (VisualC++6) so use -O2b2xg- if  $(MSC_VER) < 1400. [ruby-core:7040]
-
-Mon Jan  9 14:25:00 2006  Kero van Gelder  <rubyforge @nospam@ kero.tmfweb.nl>
-
-	* lib/webrick/httpservlet/filehandler.rb: fixed typo. [ruby-core:7075]
-
-Sun Jan  8 14:15:27 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (GCC_VERSION_BEFORE): check __INTEL_COMPILER.
-	  Intel C++ Compiler defines __GNUC__.
-	  http://www.intel.com/software/products/compilers/clin/docs/ug_cpp/lin1077.htm
-
-Sat Jan  7 15:40:07 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (singleton): get rid of segfault on syntax error.
-	  fixed: [ruby-core:07070]
-
-Sat Jan  7 06:24:18 2006  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (rb_fd_isset): compare the result of FD_ISSET with 0 to
-	  avoid FreeBSD bug.  FreeBSD defines FD_ISSET as just a bitmap of
-	  unsigned long.  So returning the value from rb_fd_isset discards
-	  upper 32bits on LP64 environment.
-	  http://www.freebsd.org/cgi/query-pr.cgi?pr=ia64/91421
-
-Fri Jan  6 02:20:18 2006  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in: don't force getcontext on IA64.
-
-	* eval.c (ruby_setjmp): add an argument for just before getcontext.
-	  (THREAD_SAVE_CONTEXT): call rb_thread_save_context just
-	  before getcontext.
-	  [ruby-dev:28205]
-
-Sun Jan  1 15:28:46 2006  Tanaka Akira  <akr@m17n.org>
-
-	* missing.h (isinf): avoid macro expansion
-	  "extern int isinf(double);" to
-	  "extern int ((sizeof(double)==sizeof(float))?_Isinff(double):_Isinf(double));" on
-	  HP-UX.
-
-Sun Jan  1 14:42:54 2006  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_seekdir): should not segfault even if passed
-	  the location which rb_w32_telldir didn't return. (and should change
-	  `bits' position) [ruby-core:7035]
-
-	* win32/dir.h: ditto. (stores `loc' instead of `bitpos')
-
-	* test/ruby/test_dir.rb: added.
-
-Sat Dec 31 22:57:00 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_save_context): should not recycle scope object used
-	  in a thread.  fixed: [ruby-dev:28177]
-
-Sat Dec 31 19:50:38 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c: attribute name was truncated with Rev1.64.
-
-Sat Dec 31 11:53:16 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/generator.rb: (Generator#initialize): should kill @loop_thread
-	  before starting new thread. (occurs when called via Generator#rewind)
-	  [ruby-dev:28184]
-
-Fri Dec 30 18:22:42 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (garbage_collect): mark objects referred from aborting threads.
-	  [ruby-dev:28190]
-
-	* win32/Makefile.sub: VC++8 support.
-
-Fri Dec 30 15:17:35 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/generator.rb (Generator#initialize): ensured to stop @loop_thread.
-	  Mr. Tanaka pointed out one Thread.pass is not enough. [ruby-dev:28185]
-
-Fri Dec 30 12:20:57 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/generator.rb (Generator#initialize): fixed dead lock. this occurred
-	  when end? was called before @loop_thread was stopped. [ruby-core:7029]
-
-Fri Dec 30 01:04:52 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/generator.rb: should work with another thread. (more robust code)
-	  [ruby-dev:28177]
-
-Thu Dec 29 23:59:37 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_gc_mark_threads): keep unmarked threads which won't wake
-	  up alone, and mark threads in the loading table.  [ruby-dev:28154]
-
-	* eval.c (rb_gc_abort_threads), gc.c (gc_sweep): kill unmarked
-	  threads.  [ruby-dev:28172]
-
-Thu Dec 29 17:02:07 2005  Tanaka Akira  <akr@m17n.org>
-
-	* test/ruby/envutil.rb (EnvUtil.rubybin): search "ruby" instead of
-	  "miniruby".  [ruby-dev:28140]
-
-Thu Dec 29 14:35:10 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_define_method): should save safe_level in the
-	  proc object.  [ruby-dev:28146]
-
-Thu Dec 29 11:22:34 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/generator.rb: reimplemented Generator class with Thread instead of
-	  callcc, in order to fix memory leak. [ruby-dev:28142]
-
-Wed Dec 28 14:10:05 2005  Tanaka Akira  <akr@m17n.org>
-
-	* ia64.s: remove .pred.safe_across_calls directive.
-	  reported by WATANABE Tetsuya.  [ruby-dev:28141]
-
-Wed Dec 28 01:32:39 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (struct thread): add bstr_max.
-	  (rb_thread_save_context): use realloc instead of REALLOC_N
-	  to avoid GC.
-
-Tue Dec 27 23:59:53 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (CompletingHash#match): fix for 1.9.
-
-Tue Dec 27 16:59:52 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/drb/drbtest.rb (DRbService::self.ext_service): increase
-	  timeout limit.  a patch from Kazuhiro NISHIYAMA
-	  <zn at mbf.nifty.com>. [ruby-dev:28132]
-
-Tue Dec 27 14:17:55 2005  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in: define IA64 for portability.  (HP aC++/ANSI C doesn't
-	  define __ia64__.)
-	  don't check libunwind stuff.
-	  check __libc_ia64_register_backing_store_base.
-
-	* defines.h: declare rb_ia64_bsp and rb_ia64_flushrs.
-	  (flush_register_windows): call rb_ia64_flushrs on IA64.
-
-	* ia64.s: new file for IA64.
-	  it is separated from C program files because
-	  Intel C++ Compiler for IA64 doesn't support inline assembly.
-
-	* common.mk (ia64.$(OBJEXT)): new target.
-
-	* ruby.h (RUBY_INIT_STACK): defined.
-	  (ruby_init_stack): declared for RUBY_INIT_STACK.
-
-	* main.c (main): precedes RUBY_INIT_STACK before ruby_init.
-
-	* gc.c (rb_gc_register_stack_start): new global variable on IA64.
-	  (garbage_collect): simplify register stack marking code.
-	  don't use libunwind.
-	  (Init_stack): initialize rb_gc_register_stack_start.
-	  (ruby_init_stack): new function for RUBY_INIT_STACK.
-
-	* eval.c (struct thread): add bstr_pos member for original position of
-	  register stack.
-	  (rb_thread_save_context): simplify register stack saving code.
-	  don't use libunwind.
-	  (rb_thread_restore_context_0): new function.  moved from
-	  rb_thread_restore_context except the stack position checking code.
-	  don't use libunwind for IA64 register stack.
-	  (register_stack_extend): new function.
-	  (stack_extend): make it self-recursive with
-	  the stack position checking code in old rb_thread_restore_context.
-	  (rb_thread_restore_context): just call stack_extend.
-	  (flush_register_windows): removed.
-
-	  [ruby-dev:28127]
-
-Tue Dec 27 14:09:39 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* process.c: new method Process.exec. [ruby-dev:28107]
-
-Tue Dec 27 08:22:15 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLSocket#post_connection_check):
-	  treat wildcard character in commonName. [ruby-dev:28121]
-
-Mon Dec 26 08:50:36 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ev_const_get): fixed a bug in constant reference during
-	  instance_eval.  [yarv-dev:707]
-
-	* eval.c (ev_const_defined): ditto.
-
-	* lib/yaml.rb (YAML::add_domain_type): typo fixed.  a patch from
-	  Joel VanderWerf <vjoel at path.berkeley.edu>.
-	  [ruby-talk:165285] [ruby-core:6995]
-
-Fri Dec 23 10:30:23 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/digest/sha2/sha2.c (ULL): support AIX C.  a patch from
-	  Kailden <kailden at gmail.com>.  [ruby-core:06984]
-
-Wed Dec 21 16:47:35 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* file.c (w32_io_info): should return handle because FileIndex is
-	  valid only while file is open. [ruby-dev:28088]
-
-Wed Dec 21 12:12:21 2005  Tanaka Akira  <akr@m17n.org>
-
-	* test/pathname/test_pathname.rb (test_kernel_open): use
-	  File.identical?.
-	  [ruby-talk:171804]
-
-Tue Dec 20 22:41:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (eval_under_i): evaluate source in caller's frame.
-	  [ruby-dev:28076]
-
-Tue Dec 20 12:53:23 2005  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_emitter_reset): to ensure compatibility
-	  with previous Ruby versions, documents are no longer headless.
-
-Tue Dec 20 12:33:01 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c (syck_node_transform): ruby object holding
-	  explicitly freed SyckNode caused SEGV. [ruby-dev:28067]
-
-	... I think syck GC problem was solved now!
-
-Tue Dec 20 01:46:48 2005  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (rb_f_backquote): fix a GC problem on
-	  IA64 with gcc 4.0.3 20051216 (prerelease) -O3.
-
-Mon Dec 19 23:32:39 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (XCFLAGS): separated as well as win32/Makefile.sub.
-
-	* main.c (always_gc): dllimport is required for VC to import a DLL
-	  symbol.  fixed: [ruby-dev:28051]
-
-	* parse.y (rb_symname_p): fixed wrong validation.  [ruby-dev:28047]
-
-Mon Dec 19 23:09:24 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* st.c: uses malloc instead of xmalloc to avoid GC. syck uses st_insert
-	  in gram.c to insert node from rb_syck_bad_anchor_handler into
-	  SyckParser's hash table. if GC occurs in st_insert, it's not under
-	  SyckParser's mark system yet. so RString can be released wrongly.
-
-	* ext/syck/syck.h (S_FREE): small hack. no need to check if pointer is
-	  NULL or not before S_FREE.
-
-	* ext/syck/rubyext.c (syck_parser_assign_io): rb_check_string_type can
-	  return new RString. if so, it becomes unreachable from GC after
-	  returns syck_parser_assign_io, and can be freed by GC. (dangling
-	  in syck io system) so extends its life time till syck_parse is called.
-
-	* ext/syck/rubyext.c (syck_parser_s_alloc): always allocates bonus,
-	  so no need to check if NULL, and "volatile VALUE hash"
-	  is not needed. (bonus->port was not protected in syck_emitter_reset)
-
-	* ext/syck/rubyext.c (syck_mark_parser): ditto.
-
-	* ext/syck/rubyext.c (syck_parser_load): ditto.
-
-	* ext/syck/rubyext.c (syck_parser_load_documents): ditto.
-
-	* ext/syck/rubyext.c (syck_emitter_s_alloc): ditto.
-
-	* ext/syck/rubyext.c (syck_mark_emitter): ditto.
-
-	* ext/syck/rubyext.c (syck_emitter_reset): ditto.
-
-	* ext/syck/rubyext.c (syck_scalar_value_set): "should set newly
-	  allocated memory instead of RString's internal storage" stuff again.
-	  by this, should call syck_free_node instead of rb_syck_free_node.
-
-	* ext/syck/rubyext.c (syck_node_type_id_set): ditto.
-
-	... I believe syck GC problem was solved by this.
-
-Mon Dec 19 12:20:59 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (FUNCTION_CALL_MAY_RETURN_TWICE): activate only
-	  before gcc 4.0.3 on SPARC and IA64.
-
-Mon Dec 19 11:37:47 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c: sorry, I reverted my "should set newly
-	  allocated memory instead of RString's internal storage" stuff.
-	  node allocated in rubyext.c seems to be freed by rb_syck_free_node
-	  not syck_free_node, and it won't free data.str->ptr and type_id.
-
-	 (I still think this is unsafe because RString(foo)->ptr becomes
-	  dangling pointer when RString is modified or freed, but anyway
-	  I misunderstood, so go back to original code for now)
-
-Sat Dec 17 21:50:41 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c (syck_emitter_reset): should initialize
-	  emitter->bonus->oid. otherwise rb_gc_mark crashes.
-
-	* ext/syck/rubyext.c (syck_mark_parser): should mark anchor nodes
-	  because they hold ruby objects. (ie: rb_syck_bad_anchor_handler)
-
-Sat Dec 17 11:00:17 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (rb_syck_compile): avoid potential memory
-	  leak.
-
-	* ext/syck/rubyext.c (syck_set_ivars): avoid potential memory
-	  leak by explicit symbol allocation.
-
-Sat Dec 17 03:57:01 2005  Tanaka Akira  <akr@m17n.org>
-
-	* bignum.c (rb_big_rshift): fix a GC problem on
-	  IA64 with gcc 4.0.3 20051216 (prerelease).
-
-Sat Dec 17 03:30:23 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (bmcall): fix a GC problem by tail call on
-	  IA64 with gcc 4.0.3 20051216 (prerelease).
-
-Fri Dec 16 17:53:45 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c (rb_syck_compile): fixed memory leak.
-
-	* ext/syck/rubyext.c: should protect global variable from GC.
-
-Fri Dec 16 11:44:43 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c (syck_resolver_tagurize): fixed memory leak.
-
-	* ext/syck/rubyext.c (syck_node_type_id_set): should set newly
-	  allocated memory instead of RString's internal storage.
-
-	* ext/syck/rubyext.c (syck_scalar_value_set): ditto.
-
-	... these fixes won't fix [ruby-dev:27839]. more work is needed.
-
-Fri Dec 16 04:38:55 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator::method_missing): should delegate
-	  block as well.
-
-Thu Dec 15 19:57:12 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::MorphingBody): fix criteria to
-	  use Tempfile.  A fix from Zev Blut <rubyzbibd at ubit.com>.
-	  [ruby-core:06076]
-
-	* string.c: remove global functions work on $_.
-
-Thu Dec 15 12:35:14 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tmpdir.rb: merged RDoc patch from Eric Hodel <drbrain at
-	  segment7.net>.  [ruby-core:06894]
-
-Thu Dec 15 01:33:31 2005  Tanaka Akira  <akr@m17n.org>
-
-	* ext/zlib/zlib.c (zstream_run): fix a GC problem by tail call on
-	  x86_64 with gcc 4.0.3 20051111 (prerelease) (Debian 4.0.2-4)
-
-Wed Dec 14 23:50:20 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_c.rb (find_class_comment): fix for class
-	  document with prototypes.  [ruby-core:06863]
-
-Wed Dec 14 23:39:53 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (has_magic): glob names contain alphabets to enable case fold
-	  search.  [ruby-dev:27735]
-
-	* dir.c (Init_Dir): FNM_SYSCASE which is default case fold flag.
-	  [ruby-dev:23296]
-
-Wed Dec 14 12:01:26 2005  Tanaka Akira  <akr@m17n.org>
-
-	* marshal.c (r_object0): fix a GC problem for reading a bignum on
-	  IA64 with gcc 3.3.5 (Debian 1:3.3.5-13).
-
-Tue Dec 13 12:23:47 2005  Tanaka Akira  <akr@m17n.org>
-
-	* re.c (rb_reg_regcomp): fix a GC problem on x86_64 with
-	  gcc 3.3.5 (Debian 1:3.3.5-13).
-
-Tue Dec 13 01:44:16 2005  Tanaka Akira  <akr@m17n.org>
-
-	* array.c (rb_ary_diff): fix a GC problem on IA64 with
-	  gcc 3.3.5 (Debian 1:3.3.5-13).
-	  When rb_ary_push is called, there was no register which contains
-	  `hash' but `&RHASH(hash)->tbl' instead.
-
-Tue Dec 13 00:08:09 2005  Tanaka Akira  <akr@m17n.org>
-
-	* sprintf.c (rb_str_format): fix a GC problem.
-	  [ruby-dev:28001]
-
-Mon Dec 12 15:51:22 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/openssl/test_ssl.rb (test_parallel): call GC.start to close
-	  unused files. [ruby-dev:27981]
-
-Mon Dec 12 09:58:09 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_cover): new method Range#cover? added.  the
-	  method name might be changed.  thanks to takano32 at
-	  http://www.rubyist.net/~matz/20051210.html#c08 for name
-	  suggestion.  [ruby-talk:167182]
-
-Mon Dec 12 00:33:56 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/digest/digest.c (rb_digest_base_s_digest): add volatile to
-	  protect temporary context object.  [ruby-dev:27979]
-
-	* ext/iconv/iconv.c (Init_iconv): rb_gc_register_address() should
-	  be called before actual variable initialization.
-	  [ruby-dev:27986]
-
-Sun Dec 11 23:54:07 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/*: update to support libraries in ActiveTcl8.4.12.0
-	  (see ext/tk/ChangeLog.tkextlib).
-
-	* ext/tk/sample/scrollframe.rb: add a new sample.
-
-Sun Dec 11 22:07:58 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb (test_remote_array_and_hash): pseudo remote
-	  objects are protected against GC. [ruby-dev:27911]
-
-Sat Dec 10 01:06:06 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/matrix.rb: add Matrix#determinant_e, Matrix#rank_e.
-	  [ruby-dev:27820] and related thread.
-
-Sat Dec 10 00:31:42 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (calling_scope_t): gave names to magic numbers for rb_call().
-	  [ruby-dev:27978]
-
-Fri Dec  9 23:31:02 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rexml/encoding.rb (encoding=): give priority to particular
-	  conversion to iconv.  [ruby-core:06520]
-
-Fri Dec  9 23:16:51 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_include): return false unless included in numeric
-	  range.  fixed: [ruby-dev:27975]
-
-Thu Dec  8 02:07:19 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (umethod_bind): adjust invoking class for module method.
-	  [ruby-dev:27964]
-
-Thu Dec  8 00:40:52 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (call_trace_func): klass parameter should be a
-	  class/module that defines calling method.  [ruby-talk:169307]
-
-Wed Dec  7 17:10:27 2005  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* sprintf.c (rb_f_sprintf): [ruby-dev:27967]
-
-Wed Dec  7 16:39:18 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_include): use discrete membership for non Numeric
-	  values, for example, String.
-
-	* numeric.c (num_scalar_p): new method. [ruby-dev:27936]
-
-	* lib/complex.rb (Complex#scalar?): ditto.
-
-Wed Dec  7 15:31:35 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): integer overflow check added.
-
-	* sprintf.c (GETASTER): ditto.
-
-Wed Dec  7 01:02:04 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/README.macosx-aqua: [new document] tips to avoid the known
-	  bug on platform specific dialogs of Tcl/Tk Aqua on MacOS X.
-
-	* ext/tk/tcltklib.c: fix bug on switching threads and waiting on the
-	  deleted interpreter on vwait and tkwait command.
-
-	* ext/tk/lib/multi-tk.rb: kill the meaningless loop for the deleted Tk
-	  interpreter.
-
-	* ext/tk/sample/demos-jp/image3.rb: [bug fix] wrong argument.
-
-	* ext/tk/sample/demos-en/image3.rb: ditto.
-
-	* ext/tk/sample/demos-jp/menu.rb: fix message for MacOS X.
-
-	* ext/tk/sample/demos-jp/menu8x.rb: ditto.
-
-	* ext/tk/sample/demos-en/menu.rb: ditto.
-
-Tue Dec  6 16:48:40 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (ruby_xmalloc2): change check condition for integer
-	  overflow.  [ruby-dev:27399]
-
-	* gc.c (ruby_xrealloc2): ditto.
-
-Tue Dec  6 16:37:57 2005  Yuya Nishida  <yuya@j96.org>
-
-	* eval.c (exec_under): avoid accessing ruby_frame->prev.
-	  [ruby-dev:27948]
-
-Fri Dec  2 19:06:06 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (Compare): should not fold double byte alphabet on win9x.
-
-Thu Dec  1 00:50:33 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_funcall2): allow to call protected methods.
-	  fixed: [ruby-dev:27890]
-
-Wed Nov 30 23:52:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (struct parser_params): fields common to ripper must be
-	  placed at each same offset.
-
-	* parse.y (NEWHEAP, ADD2HEAP): set count after pointer was set.
-	  fixed: [ruby-dev:27896]
-
-Wed Nov 30 13:43:07 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-expr-beg): support $! at the end of
-	  expression.   [ruby-dev:27868]
-
-Mon Nov 28 20:24:22 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (PP::PPMethods#object_address_group): mask an address with
-	  word size.
-
-Tue Nov 29 23:57:05 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (struct parser_params): heap must be placed at same offset
-	  also in ripper.y.  fixed: [ruby-dev:27846]
-
-	* parse.y (yycompile): prevent vparser from tail call optimization.
-	  fixed: [ruby-dev:27851]
-
-	* parse.y (parser_mark): value needs to be marked.
-	  fixed: [ruby-dev:27845]
-
-Tue Nov 29 22:45:30 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/observer.rb (notify_observers): follow change of observer.rb.
-	  fixed: [ruby-core:6796]
-
-Mon Nov 28 20:24:22 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (PP::PPMethods#object_address_group): adjust address format.
-
-Mon Nov 28 18:55:22 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (init_inetsock_internal): remove setting
-	  SO_REUSEADDR option on server socket on Cygwin.
-	  fixed: [ruby-core:6765] ([ ruby-Bugs-2872 ])
-
-Mon Nov 28 13:11:45 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_strerror): remove all CR and LF. (avoid broken
-	  error message on bccwin32 + winsock)
-
-Mon Nov 28 09:15:50 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/mkmf.rb (create_makefile): should not change sodir with
-	  dir.gsub!. (bccwin32 failed to install third party extensions)
-	  [ruby-dev:27834]
-
-Sun Nov 27 05:37:20 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb: use File.basename to decompose pathnames.
-	  experimental Windows support.
-
-Sun Nov 27 00:56:13 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/wsdl/xmlSchema/complexContent.rb: missing
-	  ComplexContent#elementformdefault method.
-
-Sat Nov 26 19:57:45 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dln.c (conv_to_posix_path): should initialize posix.
-
-Fri Nov 25 20:34:56 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/xmlrpc/datetime.rb (DateTime::to_a): comparison with non
-	  array-convertible object must return false.
-
-Fri Nov 25 14:34:09 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_max): treat end exclusion without iteration if
-	  the end value is an integer.  [ruby-talk:167433]
-
-Fri Nov 25 12:52:57 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: added backward compatibility codes.
-	* lib/rss/parser.rb: ditto.
-	* test/rss/test_parser.rb: ditto.
-	* test/rss/test_2.0.rb: ditto.
-
-	* test/rss/test_content.rb: use #__send__ instead of #funcall for
-	  no private method.
-
-Fri Nov 25 12:39:56 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: improved type conversion.
-	* lib/rss/1.0.rb: ditto.
-	* lib/rss/0.9.rb: ditto.
-	* lib/rss/2.0.rb: ditto.
-	* lib/rss/image.rb: ditto.
-	* lib/rss/syndication.rb: ditto.
-
-	* test/rss/test_2.0.rb: added type conversion tests.
-	* test/rss/test_accessor.rb: ditto.
-	* test/rss/test_to_s.rb: ditto.
-	* test/rss/test_syndication.rb: ditto.
-	* test/rss/test_setup_maker_2.0.rb: ditto.
-	* test/rss/test_setup_maker_1.0.rb: ditto.
-	* test/rss/test_setup_maker_0.9.rb: ditto.
-	* test/rss/test_maker_sy.rb: ditto.
-	* test/rss/test_maker_image.rb: ditto.
-	* test/rss/test_maker_2.0.rb: ditto.
-	* test/rss/test_maker_0.9.rb: ditto.
-	* test/rss/test_image.rb: ditto.
-
-	* test/rss/test_maker_1.0.rb: use assert instead of assert_equal.
-
-	* test/rss/rss-assertions.rb: improved type conversion assertions.
-
-Fri Nov 25 10:38:20 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/image.rb: added Image prefix.
-
-	* lib/rss/maker/image.rb: ditto.
-
-Fri Nov 25 10:33:02 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_2.0.rb: added RSS 2.0 tests.
-
-	* test/rss/rss-assertions.rb: extended XML stylesheet assertion.
-
-	* lib/rss/0.9.rb: added initialize method.
-
-	* test/rss/test_1.0.rb: cleanup.
-
-Fri Nov 25 10:29:48 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_min): use <=> comparison rather than iteration.
-	  [ruby-talk:167420]
-
-	* range.c (range_max): ditto.
-
-Thu Nov 24 01:31:44 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* file.c (w32_io_info): CreateFile failed on Win9x if file was already
-	  opened. (FILE_SHARE_READ was needed, but actually I don't understand
-	  the flags of CreateFile well...)
-
-Wed Nov 23 23:52:35 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_div): use floor rather than rb_Integer().
-	  [ruby-dev:27674]
-
-Wed Nov 23 22:34:15 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb: added entity handling type predicate.
-	* lib/rss/rexmlparser.rb: ditto.
-	* lib/rss/xmlparser.rb: ditto.
-	* lib/rss/xmlscanner.rb: ditto.
-
-	* lib/rss/xmlscanner.rb: more robust entity handling.
-
-	* test/rss/test_parser.rb: added an entity handling test.
-
-Wed Nov 23 20:59:01 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add Tk.pkgconfig_list and Tk.pkgconfig_get
-	  [Tk8.5 feature].
-
-	* ext/tk/lib/tk/text.rb: supports new indices modifiers on a Text
-	  widget [Tk8.5 feature].
-
-	* ext/tk/lib/tk/virtevent.rb: add TkNamedVirtualEvent.
-
-	* ext/tk/lib/tk/autoload.rb: ditto.
-
-	* ext/tk/lib/tk/event.rb: add :data key for virtual events [Tk8.5
-	  feature].
-
-Wed Nov 23 18:52:45 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* file.c (w32_io_info): should not call GetFileInformationByHandle
-	  for pipe.
-
-	* file.c (w32_io_info): checks return value from rb_w32_get_osfhandle.
-
-	* file.c (w32_io_info): now can identify directory on WinNT.
-
-Wed Nov 23 18:46:53 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/: use #__send__ instead of #send.
-	* test/rss/: ditto.
-
-Wed Nov 23 18:32:56 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_taxonomy.rb: use #reject directory.
-
-Wed Nov 23 18:26:00 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/taxonomy.rb: changed class or module prefix to
-	  Taxonomy from Taxo.
-	* lib/rss/maker/taxonomy.rb: ditto.
-
-Wed Nov 23 18:21:11 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/taxonomy.rb: implemented taxonomy module for RSS
-	  Maker.
-	* lib/rss/taxonomy.rb: supported RSS Maker.
-	* lib/rss/maker.rb: added taxonomy module support.
-
-	* lib/rss/rss.rb: adjusted to other element API.
-	* lib/rss/1.0.rb: adjusted to other element API but backward
-	  compatibility is reserved.
-	* lib/rss/0.9.rb: ditto.
-
-	* test/rss/test_maker_taxo.rb: added test case for taxonomy module
-	  for RSS Maker.
-	* test/rss/test_setup_maker_1.0.rb: added tests for taxo:topic.
-
-	* test/rss/test_setup_maker_1.0.rb: added backward compatibility
-	  test.
-	* test/rss/test_setup_maker_0.9.rb: ditto.
-	* test/rss/test_setup_maker_2.0.rb: ditto.
-
-	* test/rss/rss-testcase.rb: added convenience method for setting
-	  up taxo:topic.
-	* test/rss/rss-assertions.rb: added assertion for taxo:topic.
-
-	* sample/rss/blend.rb: followed new API.
-
-Wed Nov 23 17:42:24 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: fixed a indentation bug.
-
-	* lib/rss/taxonomy.rb: fixed <taxo:topic> #to_s bug.
-
-	* test/rss/test_taxonomy.rb: added a #to_s test.
-
-Wed Nov 23 03:40:49 2005  Guy Decoux  <ts@moulon.inra.fr>
-
-	* re.c (KR_REHASH): should cast to unsigned for 64bit CPU.
-	  [ruby-core:06721]
-
-Wed Nov 23 07:26:44 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: check for X509V3_EXT_nconf_nid.
-
-	* ext/openssl/ossl_x509ext.c (MakeX509ExtFactory): should use
-	  OPENSSL_malloc to allocate X509V3_CTX.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509extfactory_create_ext): use
-	  X509V3_EXT_nconf_nid to avoid SEGV (and to build extensions which
-	  values are placed in separate section).
-
-	* test/openssl/test_x509ext.rb: new file.
-
-Wed Nov 23 01:22:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (test_identical): test if two files are identical.
-
-	* file.c (rb_f_test): support DOSISH systems where st_ino is not
-	  reliable.  fixed: [ruby-core:06672]
-
-	* win32.h, win32.c (rb_w32_osid): check the running platform.
-
-Tue Nov 22 23:52:06 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb: match incomplete (in current enconding) multibyte
-	  string.  http://inamode6.tokuhirom.dnsalias.org/show/1551
-
-Tue Nov 22 18:36:11 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (winnt_stat): set mapped errno instead of ENOENT.
-
-Tue Nov 22 14:36:54 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (rb_file_s_basename): skip slashes just after UNC top slashes.
-
-	* test/ruby/test_path.rb (test_dirname, test_basename): follow new
-	  spec. and add new tests.
-
-Tue Nov 22 13:30:15 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_stat): Dir.chdir('//server/shared');
-	  p Dir.glob('*') should work on WinNT. (implemented our own
-	  stat(2) on WinNT) [ruby-list:41552] [ruby-dev:27711]
-
-Tue Nov 22 02:31:53 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/tile.rb: bug fix (Tk::Tile::USE_TTK_NAMESPACE
-	  is not defined).
-
-Tue Nov 22 01:45:21 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_basename): DOSISH_UNC is defined on cygwin but
-	  DOSISH is not.  fixed: [ruby-dev:27797]
-
-Mon Nov 21 22:50:48 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_path_skip_prefix, rb_file_s_basename): UNC without path
-	  should not be splitted.  fixed: [ruby-dev:27776] [ruby-dev:27786]
-
-	* parse.y (dsym): prohibit empty symbol literal by interpolation.
-	  fixed: [ruby-talk:166529]
-
-Mon Nov 21 16:03:48 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/setup.mk: findstr doesn't exist on win9x.
-	  fixed: [ruby-dev:27756]
-
-Sun Nov 20 21:39:27 2005  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* regparse.c (fetch_token_in_cc): tok->escaped should be
-	  initialized.  [ruby-dev:27763]
-
-Sun Nov 20 22:34:06 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_symname_p): [ not followed by ] is not valid symbol.
-	  fixed: [ruby-talk:166520]
-
-Sat Nov 19 19:57:54 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::ln): ln documentation fix.
-	  [ruby-core:06661]
-
-Sat Nov 19 08:19:38 2005  Zach Dennis  <zdennis@mktec.com>
-
-	* ext/socket/socket.c: Socket Documentation. [ruby-core:6552]
-
-Sat Nov 19 07:34:32 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/font.rb: remove dependency on Ruby's version (1.8
-	  or 1.9).
-
-	* ext/tk/lib/tkextlib/ICONS/icons.rb: ditto.
-
-	* ext/tk/sample/tkextlib/treectrl/demo.rb: ditto.
-
-Fri Nov 18 18:07:05 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (rb_file_s_dirname): should use skipprefix for UNC path.
-	  pointed out by nobu ([ruby-dev:27744]). fixed: [ruby-core:5076]
-
-Fri Nov 18 17:35:09 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: add restriction to access the entried
-	  command table and manipulate other IPs (for reason of security).
-	  Now, a IP object can be controlled by only its master IP or the
-	  default IP.
-
-	* ext/tk/lib/remote-tk.rb: add restriction to manipulate.
-
-	* ext/tk/tcltklib.c (ip_is_slave_of_p): add TclTkIp#slave_of?(ip)
-	  to check manipulability.
-
-	* ext/tk/lib/tk.rb: bug fix on handling of Tcl's namespaces.
-
-	* ext/tk/lib/tk/namespace.rb: ditto.
-
-Fri Nov 18 16:47:33 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (rb_file_s_dirname): added checks for some patterns with drive
-	  letter. fixed: [ruby-dev:27738]
-
-	* test/ruby/test_path.rb (test_dirname): added tests for above
-	  patterns.
-
-Fri Nov 18 12:19:16 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.h (S_IFIFO): r,w = IO.pipe; r.stat.pipe? now
-	  returns true on VisualC++6.
-
-Thu Nov 17 17:58:00 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/1.0.rb: added convenience method 'resources'.
-
-	* lib/rss/taxonomy.rb: ditto.
-
-	* test/rss/rss-assertions.rb: added test for 'resources'.
-
-	* test/rss/test_taxonomy.rb: ditto.
-
-Thu Nov 17 17:53:30 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/taxonomy.rb: implemented taxonomy module.
-
-	* test/rss/test_taxonomy.rb: added tests for taxonomy support.
-
-Thu Nov 17 17:40:19 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/1.0.rb: added rdf:Bag.
-
-Thu Nov 17 13:52:00 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: removed needless argument 'prefix'.
-
-	* lib/rss/parser.rb: ditto.
-
-Wed Nov 16 23:24:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (static-ruby): overridable.
-
-	* ext/extmk.rb (parse_args): force to link extensions statically only
-	  if static is given for extstatic.
-
-	* ext/extmk.rb (RUBY, RUBYW): overridable.
-
-Wed Nov 16 01:29:31 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/trackback.rb: added TrackBack prefix.
-
-	* lib/rss/maker/trackback.rb: ditto.
-
-Wed Nov 16 01:26:13 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION): 0.1.5 -> 0.1.6.
-
-	* test/rss/test_version.rb (RSS::TestVersion#test_version): ditto.
-
-Tue Nov 15 23:54:24 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_load_ok): eaccess() returns 0 on success.
-	  fixed: [ruby-dev:27713]
-
-Tue Nov 15 16:36:03 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* array.c (rb_ary_fill): previous commit disabled this usage:
-
-	    a = [0,1,2,3,4,5,6,7,8,9]
-	    a.fill {|i| a[i] * 10} #=> [nil, nil, ...., nil]
-
-	  previous commit has the advantage of early garbage collection, but
-	  potentially this would break some script. so I reverted behavior.
-
-Tue Nov 15 16:15:23 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (file_load_ok): use eaccess() instead of actually opening
-	  the file.  [ruby-talk:156378]
-
-	* lib/jcode.rb (String::reverse): add new methods.
-	  [ruby-list:41245]
-
-Tue Nov 15 15:49:34 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* array.c (rb_ary_fill): tail elements were vanished when the middle
-	  part of array was filled. (ie: [0,1,2,3,4].fill(-1,2,1) => [0,1,-1])
-
-	* test/ruby/test_array.rb (test_fill): added.
-
-Tue Nov 15 14:39:16 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_fill): should adjust array length correctly when
-	  an array is expanded in the fill process.  [ruby-core:06625]
-
-Mon Nov 14 23:49:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_readlink): ERANGE will occur only on GPFS.
-	  [ruby-dev:27699]
-
-Mon Nov 14 17:36:22 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_first): RDoc update from Daniel Berger
-	  <djberg96@yahoo.com>.  [ruby-core:06577].
-
-Sun Nov 13 10:55:24 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/uri/common.rb (escape): regard second argument as a
-	  character set. [ruby-dev:27692]
-
-Sat Nov 12 08:36:40 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, eval.c, intern.h: check fd_mask type.
-
-	* configure.in (socketpair): need to be checked.
-
-Fri Nov 11 19:53:47 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* eval.c, intern.h: failed to compile where NFDBITS is defined but
-	  howmany() is not defined. [ruby-dev:27680]
-
-	* io.c (is_socket): failed to compile where S_ISSOCK is not defined.
-
-	* io.c (pipe_open): failed to compile where socketpair is not supported.
-
-Fri Nov 11 08:20:56 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (OUTFLAG): keep trailing spaces.  [ruby-dev:27666]
-
-	* mkconfig.rb: substitution references added.
-
-Fri Nov 11 07:39:49 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* configure.in: undef HAVE_LINK on BeOS. (link(2) always returns
-	  EINVAL, and this causes error in test/fileutils.)
-
-	* file.c: override chown(2) and fchown(2) on BeOS. (these functions
-	  should not change user/group id if -1 is passed as corresponding
-	  argument, and this causes error in test/fileutils too)
-	  [ruby-dev:27672]
-
-Thu Nov 10 21:05:03 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/shellwords.rb: fix for blank but not empty string.
-	  fixed: [ruby-dev:27663]
-
-Wed Nov  9 08:39:38 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/shellwords.rb: refactored.  [ruby-core:06581]
-
-Tue Nov  8 17:35:53 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* intern.h, eval.c (rb_thread_signal_raise): constified.
-
-	* signal.c: cosmetic change.
-
-Tue Nov  8 15:32:27 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/drb/ssl.rb (DRb::SSLConfig#accept): fixed typo.
-	  [ruby-dev:27560] [ruby-core:4627]
-
-Mon Nov  7 20:54:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c: iconvctl() support.  [EXPERIMENTAL]
-
-Mon Nov  7 16:23:23 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl.h: need to include winsock2.h before including
-	  windows.h by some openssl headers.
-
-Mon Nov  7 13:43:51 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/stubs.c (_nativethread_consistency_check): use simpler
-	  (low cost) way to check whether the Tcl interpreter was compiled
-	  with threads enabled of not.
-
-	* ext/tk/tcltklib.c: reduce warnings.
-
-	* ext/tk/tkutil/tkutil.c: ditto.
-
-Mon Nov  7 00:06:12 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/yaml.rb: removed :nodoc: to generate Kernel doc. [ruby-core:6324]
-
-Sun Nov  6 23:39:13 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (Iconv::BrokenLibrary): exception when detected a
-	  bug of underlying library.
-
-Sun Nov  6 21:43:22 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/stubs.c (ruby_tcl_create_ip_and_stubs_init): should touch
-	  interpreter after initialization is done. [ruby-dev:27638]
-
-Sun Nov  6 20:13:27 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_readlink): readlink(2) on AIX fails with ERANGE if
-	  buffer size is less than required.  fixed: [ruby-dev:27634]
-
-Sat Nov  5 13:42:50 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, cygwin/GNUmakefile.in (mingw): use def file to alias
-	  symbols.  [ruby-dev:27532]
-
-	* bcc32/mkexports.rb, win32/mkexports.rb: make aliases in DLL.
-
-	* win32/win32.c, win32/win32.h: replace symbols only when RUBY_EXPORT
-	  is defined.
-
-Thu Nov  3 07:57:39 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/open-uri.rb (open_loop): find_proxy should return nil when
-	  proxy does not exist. [ruby-dev:27630]
-
-Wed Nov  2 20:25:28 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: ext/tk/extconf.rb: change the check parameter
-	  for Win32.
-
-Wed Nov  2 19:03:06 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_rbUpdateObjCmd, ip_rb_threadUpdateObjCmd):
-	  passed improper flags to DoOneEvent().
-
-	* ext/tk/tkutil/tkutil.c: use rb_obj_respond_to() instead of
-	  rb_respond_to().
-
-Tue Nov  1 14:20:11 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call_super): should call method_missing if super is
-	  called from Kernel method.
-
-	* eval.c (exec_under): frame during eval should preserve external
-	  information.
-
-Tue Nov  1 10:48:49 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: should check ERR_peek_last_error().
-	  [ruby-dev:27597]
-
-	* ext/openssl/ossl.c (ossl_raise): ditto.
-
-Mon Oct 31 17:34:46 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: use proper option for Sun linker. A patch from
-	  Shinya Kuwamura <kuwa at labs.fujitsu.com>.  [ruby-dev:27603]
-
-Mon Oct 31 05:46:08 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_update): input data must
-	  not be empty. [ruby-talk:161220]
-
-	* test/openssl/test_cipher.rb: add test for Cipher#update("").
-
-Mon Oct 31 05:38:26 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb
-	  (WEBrick::HTTPServlet::CGIHandler#do_GET): the value of Set-Cookie:
-	  header field should be splited into each cookie.  [ruby-Bugs:2199]
-
-	* lib/webrick/cookie.rb (WEBrick::Cookie.parse_set_cookie): new method
-	  to parse the value of Set-Cookie: header field.
-
-	* test/webrick/test_cookie.rb, test/webrick/test_cgi.rb,
-	  test/webrick/webrick.cgi: add some test for cookie.
-
-Mon Oct 31 02:33:25 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_rshift): RDoc fix.  [ruby-core:6351]
-
-	* util.h (strtod): add #undef for platforms defines strtod()
-	  macro.   [ruby-dev:27563]
-
-Mon Oct 31 02:31:41 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_float.rb (test_precision): test by assert_in_delta.
-	  [ruby-dev:27575]
-
-Sat Oct 29 01:58:25 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/etc/etc.c: document update from mathew <meta@pobox.com>.
-	  [ruby-core:06473]
-
-	* ext/fcntl/fcntl.c: ditto.
-
-Sat Oct 29 16:56:03 2005  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: added seven predicates sunday? to saturday?.
-
-	* lib/date.rb: added two methods {prev,next}_month,
-	  that are almost same as << and >>.
-
-Thu Oct 27 20:34:43 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (enumerator_allocate): allow subclassing.
-
-Thu Oct 27 16:45:31 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (scan_once): wrong condition to use mbclen2().
-	  [ruby-dev:27535]
-
-Thu Oct 27 11:53:17 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* missing.h, missing/memcmp.c, missing/memmove.c:
-	  ANSI compatible interface.
-
-Wed Oct 26 09:15:48 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/implicit.c (syck_type_id_to_uri): should return
-	  newly allocated memory. otherwise, type_id will be freed
-	  twice. [ruby-dev:27384] [ruby-core:6385]
-
-Wed Oct 26 01:58:19 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_EXTERN): macro to export symbols in shared
-	  library.  [ruby-core:05528]
-
-	* defines.h, {bcc32,win32,wince}/Makefile.sub (RUBY_EXTERN): moved to
-	  configuration pass.
-
-	* ext/extmk.rb (extmake): RUBY_EXTERN for static linked extensions.
-
-Tue Oct 25 20:06:59 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ruby.h (Qfalse, Qtrue, Qnil, Qundef): make sure these immediate
-	  values have VALUE type. there is an environment where sizeof(VALUE)
-	  != sizeof(int) like IA64. if 32bit integer (Qtrue) is passed to ANYARGS
-	  and received by 64bit integer (VALUE), upper bits may have garbage value.
-	  [ruby-dev:27513]
-
-Tue Oct 25 15:32:00 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rational.rb: applied documentation patch from Gavin Sinclair
-	  <gsinclair@gmail.com>.  [ruby-core:06364]
-
-	* lib/irb.rb (IRB::Irb::eval_input): handle prompts with newlines
-	  in irb auto-indentation mode.  [ruby-core:06358]
-
-Tue Oct 25 14:21:46 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* gc.c (garbage_collect): sorry, previous commit was incorrect.
-	  [ruby-core:6386]
-
-Tue Oct 25 13:40:16 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* gc.c (garbage_collect): return now whether there're rooms for new
-	  objects, rather than whether GC run. fixed: [ruby-core:6376]
-
-Tue Oct 25 02:12:08 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/markup/simple_markup.rb (SM::SimpleMarkup::LABEL_LIST_RE):
-	  reduce redundant backtrack.  [ruby-talk:161771]
-
-Tue Oct 25 00:35:33 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/*: RDoc documentation from Eric Hodel
-	  <drbrain@segment7.net> added.
-
-Mon Oct 24 21:14:29 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, io.c: use sys/syscall.h if syscall.h is not available.
-	  [ruby-core:06247]
-
-Mon Oct 24 20:38:25 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/Win32API/lib/win32/resolv.rb (get_info): support multiple DNS.
-	  fixed: [ruby-list:40058], [ruby-dev:27479]
-
-Mon Oct 24 11:01:11 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/canvas.rb (TkCanvasItemConfig::__item_val2ruby_optkeys):
-	  typo fixed.  [ruby-talk:162187]
-
-	* ext/tk/lib/tk/menu.rb (TkMenuEntryConfig::__item_val2ruby_optkeys):
-	  ditto.  [ruby-core:06359]
-
-Mon Oct 24 07:57:56 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/tk/lib/tk/canvas.rb (TkCanvasItemConfig::__item_val2ruby_optkeys):
-	  typo fixed.  [ruby-talk:162187]
-
-	* ext/tk/lib/tk/menu.rb (TkMenuEntryConfig::__item_val2ruby_optkeys):
-	  ditto.  [ruby-core:06359]
-
-	* lib/matrix.rb (Matrix::initialize): use funcall instead of send
-	  to allow private methods to be called.  A report from
-	  Jean-Claude Arbaut <jcarbaut@laposte.net>.  [ruby-core:06359]
-
-Mon Oct 24 00:41:18 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_sunday): added predicate methods for the days of the
-	  week.  [ruby-list:41340]
-
-Sun Oct 23 07:11:11 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: improve messages [ruby-core:06325].
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/canvas.rb, ext/tk/lib/tk/entry.rb,
-	  ext/tk/lib/tk/frame.rb, ext/tk/lib/tk/image.rb,
-	  ext/tk/lib/tk/itemconfig.rb, ext/tk/lib/tk/labelframe.rb,
-	  ext/tk/lib/tk/listbox.rb, ext/tk/lib/tk/menu.rb,
-	  ext/tk/lib/tk/radiobutton.rb, ext/tk/lib/tk/scale.rb,
-	  ext/tk/lib/tk/spinbox.rb, ext/tk/lib/tk/text.rb,
-	  ext/tk/lib/tk/toplevel.rb: improve conversion of option values.
-
-	* ext/tk/lib/tkextlib/*: ditto.
-
-	* ext/tk/lib/tkextlib/*: update to support ActiveTcl8.4.11.2.
-
-	* ext/tk/lib/tkextlib/trofs/*: support Trofs 0.4.3.
-
-	* ext/tk/lib/tkextlib/tile/*: support Tile 0.7.2.
-
-	* ext/tk/lib/tkextlib/vu/*: support vu 2.3.0.
-
-	* ext/tk/lib/tkextlib/tcllib/*: support Tcllib 1.8 (Tklib 0.3).
-
-Sat Oct 22 23:54:07 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb, lib/mkmf.rb (with_config): support --with-extension
-	  options.  [ruby-dev:27449]
-
-Sat Oct 22 14:25:43 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* util.[hc] (ruby_add_suffix): constified.
-
-	* util.[hc] (ruby_scan_{oct,hex}): fixed typo. (renamed from
-	  scan_{oct,hex})
-
-	* util.c: almostly ANSI styled. (except for functions depending on
-	  macro and K&R technique)
-
-Sat Oct 22 13:26:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (sym_inspect), parse.y (parser_yylex, rb_symname_p): check
-	  if valid as a symbol name more strictly.  [ruby-dev:27478]
-
-	* test/ruby/test_symbol.rb: tests for [ruby-core:03573].
-
-	* time.c (rb_strftime): removed meaningless volatile modifiers, and
-	  concatenate successive nul characters at once.  [ruby-dev:27472]
-
-	* ext/tk/lib/tk/font.rb, ext/tk/lib/tkextlib/ICONS/icons.rb,
-	  ext/tk/sample/tkextlib/treectrl/demo.rb, lib/net/imap.rb,
-	  lib/rss/parser.rb, test/rss/test_content.rb,
-	  test/rss/test_dublincore.rb, test/rss/test_syndication.rb,
-	  test/rss/test_trackback.rb, test/ruby/test_eval.rb,
-	  test/socket/test_socket.rb, test/socket/test_udp.rb:
-	  Object#fcall was renamed as Object#funcall.
-
-Sat Oct 22 10:08:28 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* missing.h, missing/*.c: SUSv3 compatible strcasecmp and strncasecmp,
-	  ANSI compatible strtol and strtoul, and ANSI styled other functions.
-
-Fri Oct 21 19:16:08 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* rubysig.h (CHECK_INTS): fixed typo. (I believe bit-or is improper)
-
-Fri Oct 21 17:49:32 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bin/erb (ERB::Main::run): typo fixed.  [ruby-core:06337]
-
-Fri Oct 21 15:42:28 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* intern.h, struct.c (rb_struct_iv_get): constified.
-
-	* marshal.c: avoid one VC++6 warning for implicit conversion
-	  from int to char.
-
-	* ruby.h: ANSI styled.
-
-	* bcc32/Makefile.sub (HAVE_HYPOT): added.
-
-	* ext/socket/extconf.rb: BeOS is only one platform should call
-	  closesocket, so check __BEOS__ macro directly. (I was worried
-	  accidently HAVE_CLOSESOCKET is defined on windows again because
-	  it has it)
-
-	* ext/socket/{getaddrinfo.c,socket.c}: ditto.
-
-	... these are all cosmetic changes.
-
-Fri Oct 21 15:23:23 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bignum.c (bignew_1): convertion from `int' to `char' discards
-	  upper bits, (ie. (char)0xff00 -> 0) so it's better to test if
-	  nonzero and set 0 or 1 instead of simply casting ... as a flag usage.
-	  (but I believe this won't cause actual bug in current implementation)
-	  [ruby-dev:27055]
-
-	* time.c: should use LONG_LONG instead of `long long'.
-
-Thu Oct 20 22:22:49 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parser.y (struct parser_params): parser never modify input string.
-
-	* ext/ripper/tools/preproc.rb (prelude): do not append surplus
-	  newlines to fix line numbers.
-
-Thu Oct 20 11:41:57 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* class.c, eval.c, hash.c, st.c, variable.c: changed /* ??? */ stuff
-	  protoize generated to ANYARGS.
-
-Thu Oct 20 11:18:11 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* eval.c, file.c, ruby.c: removed strchr, strrchr, strstr definition
-	  because they are defined in missing.h.
-
-	* missing.h, missing/strchr.c, missing/strstr.c: ANSI styled.
-
-Thu Oct 20 09:36:06 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/mkmf.rb (create_makefile): Borland make seems not to allow
-	  empty dependency list. If this change is not good, please correct
-	  it.
-
-Thu Oct 20 07:55:09 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): get rid of a restriction
-	  of Borland make.  fixed: [ruby-dev:27460]
-
-	* ext/ripper/depend: ditto.
-
-Wed Oct 19 23:58:03 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): do not create unnecessary empty
-	  directories.  fixed: [ruby-dev:27451]
-
-Wed Oct 19 08:28:32 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_join): elements may contain null pointer strings.
-	  report and fixed by Lloyd Zusman (hippoman): [ruby-core:06326]
-
-Wed Oct 19 02:34:33 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c, eval.c, gc.c, parse.y, regparse.c, sjis.c, time.c:
-	  made internal symbols static.  [ruby-dev:27435]
-
-Tue Oct 18 10:58:27 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/depend, ext/dl/extconf.rb, ext/socket/depend,
-	  ext/socket/extconf.rb: shouldn't define DESTCLEANFILES in depend,
-	  use $distcleanfiles in extconf.rb.
-
-	* win32/Makefile.sub (distclean-local): should remove .config.h.time.
-
-Mon Oct 17 09:42:50 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* mkconfig.rb: fixup configure_args for mswin32 configure.
-
-	* win32/configure.bat (srcdir, target): ditto.
-
-Mon Oct 17 05:01:50 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* env.h: move struct METHOD and struct BLOCK from eval.c to
-	  support NodeWrap and ParseTree.
-
-Sun Oct 16 22:16:51 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: omit non-existing directories.
-
-Sun Oct 16 14:40:54 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/rinda.rb (Rinda::Tuple#initialize): check remote hash
-	  tuple. fixed: [ruby-list:41227]
-
-	* test/rinda/test_rinda.rb: test it.
-
-Sun Oct 16 03:38:07 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rubysig.h (CHECK_INTS): prevent signal handler to run during
-	  critical section.  [ruby-core:04039]
-
-	* eval.c (load_wait): need not to call rb_thread_schedule()
-	  explicitly.  [ruby-core:04039]
-
-	* eval.c (rb_thread_schedule): clear rb_thread_critical.
-	  [ruby-core:04039]
-
-Sun Oct 16 00:13:14 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/configure.bat: remove unnecessary line which prevents
-	  creating Makefile.
-
-Sat Oct 15 23:52:07 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb: (getbinaryfile): allow nil for localfile, and
-	  returns retrieved data if localfile is nil.
-
-	* lib/net/ftp.rb: (gettextfile): ditto.
-
-Sat Oct 15 19:51:29 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* bin/erb: typo fixed, again. thanks, Doug Kearns.
-
-Fri Oct 14 23:09:31 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (MKFILES): update MKFILES if configure files get
-	  changed.
-
-	* win32/configure.bat, win32/setup.mak (configure_args): store
-	  arguments to configure files.
-
-Fri Oct 14 22:05:45 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (ioctl): should set errno.
-
-Fri Oct 14 16:39:37 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/config.rb (Config::FileHandler): :UserDir should be nil.
-	  It is harmful to permit the access to ~/public_html by default.
-	  suggested by Hiroyuki Iwatsuki.
-
-Fri Oct 14 04:58:38 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_obj_instance_exec): create instance_exec and
-	  module_exec which pass arguments to the block.
-
-	* eval.c (rb_f_funcall): rename fcall to funcall to follow
-	  tradition.
-
-Thu Oct 13 23:29:51 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (HEAPCNT): bison allocates indivisible size.
-	  fixed: [ruby-core:06261]
-
-	* io.c, pack.c, ext/syck/rubyext.c, ext/syck/syck.h, missing/isinf.c:
-	  get rid of warnings.  fixed: [ruby-core:06247]
-
-Wed Oct 12 12:51:56 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.c (Init_openssl): should call
-	  OpenSSL_add_ssl_algorithms().
-
-Wed Oct 12 11:08:54 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* file.c (rb_f_test): typo in RDoc comments.
-
-Tue Oct 11 21:41:58 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_FUNC_ATTRIBUTE): check prefixed attribute form
-	  first.  [ruby-dev:27398]
-
-	* array.c, enum.c, eval.c, util.c: safer function pointer usage.
-	  fixed: [ruby-core:06143]
-
-	* util.h (qsort): removed the definition incompatible to ANSI.
-	  fixed: [ruby-core:06147]
-
-	* eval.c (rb_obj_respond_to): check if obj responds to the given
-	  method with the given visibility.  [ruby-dev:27408]
-
-	* eval.c (rb_respond_to): conform to Object#respond_to?.  [ruby-dev:27411]
-
-Tue Oct 11 00:01:21 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c (st_free_table): do not call free() but xfree().
-	  [ruby-core:06205]
-
-Sat Oct  8 19:49:42 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (Init_Binding): add Binding#dup method.  [yarv-dev:666]
-
-	* io.c (rb_io_init_copy): clear PREP flag for copied IO.
-	  fixed: [ruby-dev:27371]
-
-	* parse.y (rb_parser_malloc, rb_parser_free): manage parser stack on
-	  heap.  [ruby-list:41199]
-
-	* parse.y (ripper_initialize): use rb_respond_to().
-
-	* ext/ripper/depend (check): get rid of re-generating ripper.y always.
-
-	* ext/iconv/charset_alias.rb: parse config.charset_alias file directly.
-
-	* ext/nkf/lib/kconv.rb (Kconv.conv): get rid of nil.to_a.
-
-	* lib/scanf.rb (Scanf::FormatSpecifier#letter, #width): use matched
-	  substring directly.
-
-	* test/ruby/test_assignment.rb, test/ruby/test_iterator.rb: followed
-	  change of sample/test.rb.
-
-	* test/net/http/test_http.rb: removed superfluous splatting stars.
-
-Fri Oct  7 16:41:43 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (splat_value): call rb_Array() to convert svalue to
-	  values.  [ruby-dev:27397]
-
-Fri Oct  7 09:54:00 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie::parse): Cookies from Nokia devices may
-	  not be parsed correctly.  A patch from August Z. Flatby
-	  (augustzf) in [ruby-Patches-2595].  [ruby-core:06183]
-
-Thu Oct  6 22:51:30 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_Array): Array() to raise error for objects without
-	  to_ary, nor to_a.
-
-	* object.c (nil_to_a): revert NilClass#to_a.
-
-Thu Oct  6 20:10:38 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c (strscan_free): remove useless code.
-	  [ruby-dev:26368] [ruby-dev:27389]
-
-Thu Oct  6 01:02:19 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (rb_range_beg_len): should return Qfalse for non-range
-	  object.
-
-Wed Oct  5 04:42:38 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/xmlrpc/server.rb (XMLRPC::Server#initialize): should mount the
-	  servlet on "/".
-
-Wed Oct  5 04:06:49 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/xmlrpc/server.rb (XMLRPC::Server#serve): delete wrong call
-	  of "join".
-
-Mon Oct  3 00:04:00 2005  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* pack.c (EXTEND16): [ruby-dev:27383]
-
-Sat Oct  1 23:55:24 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (do_select, rb_w32_select): brush up.
-
-Sat Oct  1 12:57:02 2005  Tanaka Akira  <akr@m17n.org>
-
-	* bignum.c (rb_big_rand): removed.  [ruby-dev:25405]
-
-Sat Oct  1 01:46:51 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI.open_loop): prohibit multiple proxy
-	  options.
-
-Thu Sep 29 10:26:18 2005  Tanaka Akira  <akr@m17n.org>
-
-	* ext/dl/cptr.c (rb_dlptr_s_to_ptr): abolish sizeof(FILE).
-	  [ruby-dev:27317]
-
-Thu Sep 29 10:15:14 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (:proxy_http_basic_authentication): new option.
-
-Thu Sep 29 07:22:05 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_f_send): underscores need to be escaped.
-	  fixed by Doug Kearns.  [ruby-core:06053]
-
-Thu Sep 29 00:57:35 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ev_const_get), variable.c (rb_const_get_0): retry only when
-	  autoload succeeded.
-
-	* variable.c (rb_autoload_load): now return true if autoload
-	  succeeded.  fixed: [ruby-dev:27331]
-
-Wed Sep 28 23:40:04 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_stat_inspect): constified.
-
-Wed Sep 28 15:12:28 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI#start): req.query_string should
-	  refer the value of QUERY_STRING. [ruby-list:41186]
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest#query_string=):
-	  add new method.
-
-Wed Sep 28 10:45:44 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: cannot compile with Tcl/Tk8.0.x [ruby-dev:27335].
-
-Wed Sep 28 07:56:52 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/yaml/basenode.rb (YAML::BaseNode::match_segment): fix typo.
-	  [ruby-dev:27237], [ruby-core:05854]
-
-	* lib/yaml/tag.rb (Module#yaml_as): suppress warnings.
-
-	* lib/yaml/types.rb (YAML::PrivateType, YAML::DomainType): ditto.
-
-Wed Sep 28 03:16:41 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* rubysig.h: fixed build problem with --enable-pthread on platforms
-	  which don't have setitimer().
-
-Mon Sep 26 22:32:13 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (set_trace_func): add rb_secure(4) to prevent adding
-	  tracing function.
-
-Mon Sep 26 20:59:28 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* parse.y: changed to ANSI function style.
-
-Sun Sep 25 12:02:04 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* bin/erb: typo fixed.
-
-Sun Sep 25 11:54:11 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/tuplespace.rb (Rinda::TemplateEntry::initialize): pull
-	  up method. Tabs converted to spaces.
-
-Sun Sep 25 09:34:22 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* parse.y: replaced `foo _((boo))' with `foo(boo)'.
-
-Sun Sep 25 08:19:53 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rss/test_content.rb, test/rss/test_syndication.rb: use fcall
-	  instead of send in order to override visibility.
-
-Sun Sep 25 01:46:43 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-calculate-indent): arrange deep-indent
-	  closing parenthesis at same column as the opening.
-
-Sun Sep 25 01:33:41 2005  Tanaka Akira  <akr@m17n.org>
-
-	* process.c (proc_setrlimit): make the third argument (rlim_max)
-	  optional.
-
-Sun Sep 25 00:42:11 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-expr-beg): deal with heredoc separately.
-	  fixed: [ruby-list:41168]
-
-	* misc/ruby-mode.el (ruby-calculate-indent): not to deepen indent
-	  level for continuous line inside parentheses.
-	  http://nabeken.tdiary.net/20050915.html#p02
-
-Sat Sep 24 21:19:39 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: document enhancement.
-
-	* ext/strscan/strscan.c: update copyright year.
-
-	* ext/strscan/strscan.c: update coding style.
-
-Sat Sep 24 20:20:05 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/net/http/test_http.rb (teardown): Net::HTTP.version_1_1 breaks
-	  many other tests; ensure that Net::HTTP is version 1.2 after test.
-	  [ruby-dev:27312]
-
-Sat Sep 24 11:44:28 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/net/http/test_http.rb: new file.
-
-Sat Sep 24 08:54:05 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (cd): no longer accept :noop option, related
-	  code is useless. [ruby-core:05858] [ruby-Bugs:2494]
-
-Sat Sep 24 08:30:00 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#sub): new method.
-
-Sat Sep 24 08:29:36 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: fix visibility of FileUtils::NoWrite, Verbose,
-	  DryRun. [ruby-core:05954]
-
-	* test/fileutils/test_nowrite.rb: test it.
-
-	* test/fileutils/test_dryrun.rb: new file.
-
-	* test/fileutils/test_verbose.rb: new file.
-
-Sat Sep 24 07:59:01 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* sample/ripper/colorize.rb: removed (replaced by ruby2html.rb).
-
-	* sample/ripper/ruby2html.rb: added.
-
-Sat Sep 24 06:35:15 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper: no longer generates .rb files.
-
-	* parse.y (Init_ripper): ripper_init_eventids*() takes 1 argument,
-	  self (class Ripper).
-
-	* ext/ripper/depend: target removed: `lib/ripper/core.rb'.
-
-	* ext/ripper/depend: new target `eventids2table.c'.
-
-	* ext/ripper/depend: new target `check'.
-
-	* ext/ripper/eventids2.c: include eventids2table.c.
-
-	* ext/ripper/eventids2.c: initialize SCANNER_EVENT_TABLE.
-
-	* ext/ripper/extconf.rb: update $cleanfiles list.
-
-	* ext/ripper/tools/generate.rb: no longer generate ripper/core.rb.
-
-	* ext/ripper/tools/generate.rb: new mode `check'.
-
-	* ext/ripper/tools/generate.rb: new mode `eventids2table'.
-
-	* ext/ripper/lib/ripper/core.rb.in: removed.
-
-	* ext/ripper/lib/ripper/core.rb: added.
-
-	* ext/ripper/lib/ripper/filter.rb: update copyright year.
-
-	* ext/ripper/lib/ripper/lexer.rb: ditto.
-
-	* ext/ripper/lib/ripper/sexp.rb: ditto.
-
-Sat Sep 24 02:40:20 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb: document update from James Edward Gray II
-	  <james@grayproductions.net>.  [ruby-core:05942]
-
-Sat Sep 24 02:05:51 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_daemon): should restrict execution on levels
-	  higher than $SAFE=2.  suggested by URABE Shyouhei
-	  <shyouhei@ice.uec.ac.jp>.
-
-Fri Sep 23 20:10:35 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/ripper/tools/generate.rb, ext/ripper/tools/preproc.rb: StringIO
-	  is not available for miniruby.  fixed: [ruby-dev:27307]
-
-Fri Sep 23 17:36:48 2005  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: avoid core dump with WIN32OLE_EVENT.
-	  [ruby-dev:27133]
-
-Fri Sep 23 16:27:39 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/forwardable.rb: replaced by new implementation from
-	  <Daniel.Berger@qwest.com>.  [ruby-core:05899]
-
-Fri Sep 23 07:07:47 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ripper/depend: use --output option instead of redirect;
-	  nmake does not remove a target when the target file is created by
-	  redirect. [ruby-dev:26466]
-
-	* test/ripper/tools/preproc.rb: new option --output.
-
-Fri Sep 23 06:57:52 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ripper/tools/generate.rb: check parser event arity.
-
-	* test/ripper/tools/generate.rb: detect crash of parser-event-IDs
-	  and scanner-event-IDs.
-
-Fri Sep 23 06:01:30 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_file.rb: check File#chown(nil,nil).
-	  [ruby-dev:27140]
-
-Fri Sep 23 05:57:23 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper: refactoring code generation tools. [ruby-dev:27247]
-	  [ruby-dev:27273]
-
-	* ext/ripper/depend: use generate.rb.
-
-	* ext/ripper/lib/ripper/core.rb: removed.
-
-	* ext/ripper/tools/generate-eventids1.rb: removed (code moved to
-	  generate.rb).
-
-	* ext/ripper/tools/generate-ripper_rb.rb: removed (code moved to
-	  generate.rb).
-
-	* ext/ripper/tools/list-parse-event-ids.rb: removed (code moved to
-	  generate.rb).
-
-	* ext/ripper/tools/list-scan-event-ids.rb: removed (code moved to
-	  generate.rb).
-
-	* ext/ripper/lib/ripper/core.rb: removed.
-
-	* ext/ripper: refactoring tests. [ruby-dev:27273]
-
-	* ext/ripper/test/check-event-arity.rb: removed (code moved to
-	  tools/generate.rb).
-
-	* ext/ripper/test/check-event-coverage.rb: removed (code moved to
-	  test/ripper/test_parser_events.rb).
-
-	* ext/ripper/test/check-scanner-event-coverage.rb: removed (code
-	  moved to test/ripper/test_scanner_events.rb).
-
-	* ext/ripper/test/list-called-events.rb: removed.
-
-	* ext/ripper/test/src_rb: removed.
-
-	* ext/ripper/test/validate.rb: removed.
-
-	* test/ripper/test_scanner_events.rb: check event coverage.
-
-	* ext/ripper/lib/ripper/core.rb.in: update copyright year.
-
-Thu Sep 22 23:40:19 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (find_executable0): default path if environment is not
-	  set.  [ruby-dev:27281]
-
-	* ext/ripper/extconf.rb (have_command): replaced with find_executable.
-
-Thu Sep 22 17:31:48 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/readline/test_readline.rb (TestReadline::replace_stdio):
-	  merged the patch of [ruby-dev:25232] instead of [ruby-dev:25223].
-	  (merged from ruby_1_8 branch)
-
-Wed Sep 21 23:30:44 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): generalized nmake dependent code.
-
-Wed Sep 21 14:16:30 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/ripper/depend (SUFFIXES): no longer needed.
-
-	* ext/ripper/depend (c): avoid nmake problem. fixed [ruby-dev:27191]
-
-Wed Sep 21 08:52:25 2005  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/token.c: correctly compute indentation of a block
-	  scalar's parent node. [ruby-talk:150620]
-
-Wed Sep 21 08:20:24 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja: add new features.
-
-Wed Sep 21 07:43:58 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (default_argv, Arguable#options): defaults strings
-	  to be parsed to Arguable instance.
-
-Wed Sep 21 02:44:09 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (path_check_0): disallow sticky world writable directory
-	  in PATH (and $LOAD_PATH).  [ruby-dev:27226]
-
-Wed Sep 21 00:32:22 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_idiv): 1.div(1.0) should return integer value.
-	  [ruby-dev:27235]
-
-Tue Sep 20 22:25:43 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/wait/lib/nonblock.rb: disable on platforms non-blocking flag
-	  is not available.  fixed: [ruby-dev:27187]
-
-	* file.c (rb_stat_inspect): protoized function pointer.
-
-Tue Sep 20 18:23:04 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (thread_mark): mark th->last_status.  [ruby-dev:27179]
-
-Tue Sep 20 18:20:33 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/yaml.rb: require 'yaml/constants'.  [ruby-core:5776]
-
-Tue Sep 20 17:48:34 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client::do_rpc): add charset
-	  information to content-type header.[ruby-core:5127]
-
-	* lib/xmlrpc/server.rb (CGIServer::serve): ditto.
-
-	* lib/xmlrpc/server.rb (ModRubyServer::serve): ditto.
-
-	* lib/xmlrpc/server.rb (WEBrickServlet::service): ditto.
-
-Tue Sep 20 17:26:42 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/webrick/test_cgi.rb: set ENV["PATH"] to CGIEnvPath on
-	  windows. bcc32's runtime is not installed into system directory,
-	  so it cannot be found without this setting. [ruby-dev:27166]
-
-Tue Sep 20 17:14:10 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* io.c: PIPE_BUF is not defined on BeOS. use _POSIX_PIPE_BUF instead.
-	  [ruby-dev:27185]
-
-Tue Sep 20 17:10:38 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/dbm/test_dbm.rb (TestDBM::test_s_open_error): remove
-	  test_s_open_error test to detect duplicate open.
-	  [ruby-dev:27202]
-
-Tue Sep 20 15:39:40 2005  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/emitter.c (syck_scan_scalar): prevent indicators from
-	  appearing alone or at the end of plain scalars. [ruby-core:5826]
-
-	* ext/syck/emitter.c (syck_emit_scalar): treat typed scalar nodes
-	  as complex keys.
-
-	* lib/syck.h: version 0.60.
-
-	* lib/yaml/basenode.rb (YAML::BaseNode#at): transform keys during
-	  key searches.
-
-	* ext/syck/rubyext.c: loading of binary-typed nodes.  prevent
-	  emission of plain strings that look like symbols, but which aren't.
-
-Tue Sep 20 05:48:26 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/xmlrpc/test_webrick_server.rb (setup_http_server):
-	  should not include 'webrick/https' unless 'use_ssl' because
-	  it fails where openssl is not installed.
-
-Tue Sep 20 01:24:45 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (splat_value): use to_a to splat non Array object.
-
-	* object.c (nil_to_a): remove nil.to_a.  [experimental]
-
-Tue Sep 20 01:01:41 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Fixnum): remove debug print.
-
-	* lib/rational.rb (Rational): ditto.
-
-Tue Sep 20 00:34:07 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_close): call rb_io_close() directly if io is a T_FILE
-	  object.  [ruby-dev:27156]
-
-Mon Sep 19 18:58:10 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* file.c (rb_file_chown): should accept nil. [ruby-dev:27171]
-
-Mon Sep 19 18:29:54 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (file_expand_path): allow pathnames to expand.
-	  [ruby-dev:27152]
-
-Mon Sep 19 15:12:15 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/depend: do not make ripper/core.rb. [ruby-dev:26462]
-
-Mon Sep 19 14:49:19 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/eventids2.c: add prefix `t' to tLAMBDA-related lexer
-	  events.
-
-	* ext/ripper/lib/ripper/core.rb: updated.
-
-Mon Sep 19 14:39:46 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (do_block): do_block event dispatches 2 args.
-	  [ruby-dev:26964]
-
-	* ext/ripper/lib/ripper/core.rb: updated.
-
-	* ext/ripper/tools/list-parser-event-ids.rb: check arity mismatch.
-
-Mon Sep 19 07:45:37 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_pkey.h, ossl_pkey_rsa.c, ossl_pkey_dsa.c:
-	  an instance variable "private" is added to OpenSSL::PKey class.
-	  this ivar is a flag that shows whether there is a private key
-	  in the instance.
-
-	* ext/openssl/ossl_engine.c: (ossl_engine_load_privkey): set private
-	  key flag.
-
-	* test/openssl/test_pkey_rsa.rb: add test about private detection.
-
-Mon Sep 19 06:38:03 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: method renaming: collect_methods ->
-	  collect_method.
-
-Mon Sep 19 05:58:59 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: use module_function instead of single extend.
-
-	* test/fileutils/test_fileutils.rb: test existence of singleton
-	  methods.
-
-Mon Sep 19 05:32:41 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (remove_entry_secure): does not use chdir(2).
-
-Mon Sep 19 03:17:48 2005  Tanaka Akira  <akr@m17n.org>
-
-	* file.c (rb_thread_flock): wrap the flock system call by
-	  TRAP_BEG/TRAP_END to enable signals.  [ruby-dev:27122]
-
-	* ext/socket/socket.c (bsock_send): wrap the sendto and send system
-	  call by TRAP_BEG/TRAP_END to enable signals when writing to a socket
-	  which is full.  [ruby-dev:27132]
-
-	* io.c (rb_io_syswrite): wrap the write system call by
-	  TRAP_BEG/TRAP_END to run signal handler in syswrite method.
-	  [ruby-dev:27134]
-
-Mon Sep 19 01:07:38 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (Init_Numeric): should define Fixnum#div.
-	  [ruby-dev:27129]
-
-	* file.c (rb_thread_flock): wrap flock(2) by TRAP_BEG and
-	  TRAP_END.  [ruby-dev:27122]
-
-	* file.c (rb_file_join): call FilePathValue() to all Pathnames to
-	  join.  [ruby-dev:27127]
-
-	* file.c (rb_get_path): call StringValueCStr() to ensure no nul
-	  bytes in path strings.
-
-	* gc.c (garbage_collect): need value for return.  [ruby-dev:27127]
-
-Sun Sep 18 02:10:47 2005  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: remove comments that are bungling up
-	  the rdoc and ri output.  output symbols as plain scalars.
-
-	* ext/syck/rubyext.c (syck_emitter_reset): emit headless
-	  documents always.
-
-	* ext/syck/emitter.c (syck_scan_scalar): quote scalars with any
-	  kind of surrounding line space, tabs or spaces alike.
-
-	* ext/syck/token.c: accept tabs as whitespace, not for indentation,
-	  but strip from plain scalars.
-
-	* test/yaml/test_yaml.rb: remove outdated tests.
-
-Sun Sep 18 01:10:37 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (garbage_collect): return false if no GC run.
-
-Sat Sep 17 23:25:04 2005  sheepman  <sheepman@sheepman.sakura.ne.jp>
-
-	* lib/mathn.rb (Rational::inspect): should preserve original
-	  operand.  [ruby-core:05806]
-
-Sat Sep 17 23:20:27 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie): should handle multiple values for a
-	  cookie name.  [ruby-talk:156140]
-
-	* test/socket/test_tcp.rb (TestTCPSocket::test_recvfrom): typo
-	  fixed.  [ruby-dev:27123]
-
-Sat Sep 17 20:58:56 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_select): fixed deadlock bug.
-	  because select(2) modifies its fd_set arguments, it must be
-	  restored sometimes.
-
-	* win32/win32.c (rb_w32_select): performance improvement when
-	 'always readable/writable handles' and sockets are passed.
-	  sockets should be polled every time.
-
-	    require "net/http"
-
-	    Thread.new {
-	      loop do
-		STDOUT.write(".") # busy on console (this is worst case though)
-	      end
-	    }
-
-	    # socket operation took long time. (sometimes timed out)
-	    Net::HTTP.start("www.ruby-lang.org") do |http|
-		http.get("/cgi-bin/cvsweb.cgi/ruby/array.c?rev=1.179")
-	    end
-
-Sat Sep 17 14:54:40 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_readpartial.rb (test_open_pipe, test_with_stdio):
-	  these tests are working now, so turned on. (windows)
-
-Sat Sep 17 14:18:15 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_select): I hope performance problem was
-	  solved.
-
-Sat Sep 17 13:45:22 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_select): console support is back.
-	  but still has performance problem because I loosely took 1 second
-	  for wait time. I'll fix it later. (The reason I drastically changed
-	  the code is that I wanted to implement the fileset management as
-	  single function, and I was worried that if pipe or console
-	  was always available, socket may not be processed any time)
-
-Sat Sep 17 11:24:16 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_select): select for socket didn't work.
-	  this caused deadlock in drb test. this happened because GetFileType
-	  for socket handle returns FILE_TYPE_PIPE. Of course, it's not a
-	  pipe. So socket handle didn't reach winsock's select function.
-
-	* win32/win32.c (rb_w32_select): read for pipe was still blocked
-	  even if writer handle was closed.
-
-	    r,w = IO.pipe
-
-	    Thread.new {
-	      sleep 3; puts "------- 1"
-	      w.puts("foo")
-	      sleep 3; puts "------- 2"
-	      w.puts("boo")
-	      sleep 3; puts "------- 3"
-	      w.close
-	    }
-
-	    until r.eof? # should break by w.close but didn't.
-	      puts r.gets
-	    end
-
-	* win32/win32.c (rb_w32_select): temporary reverted console support
-	  but it'll be back soon.
-
-Sat Sep 17 10:42:13 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: MultiTkIp#eval_string and bg_eval_string
-	  should call Kernel.eval on caller's safe-level instead of slave's
-	  safe-level (Of course, the given script should be evaluated on
-	  slave's safe-level).
-
-Sat Sep 17 09:45:26 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_substr): should propagate taintness even for
-	  empty strings.  [ruby-dev:27121]
-
-	* string.c (rb_str_aref): should infect result if range argument
-	  is tainted.  [ruby-dev:27121]
-
-Sat Sep 17 08:35:39 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb (RSS::Maker::ItemsBase#normalize): fixed
-	  strange RSS::Maker::Item#max_size behavior.
-	  Thanks to Kazuhiko <kazuhiko@fdiary.net>.
-
-	* test/rss/test_maker_1.0.rb (RSS::TestMaker10#test_items): ditto.
-
-Sat Sep 17 08:02:53 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: supported DIGEST-MD5.  Thanks, Mathieu Arnold.
-
-	* lib/net/imap.rb: use fcall instead of send.  Thanks, Satoru
-	  Takabayashi.
-
-Fri Sep 16 22:45:49 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): empty string for path name ending with a
-	  period.  fixed: [ruby-core:05651]
-
-	* file.c (rb_file_join): smarter behavior at edge cases.
-	  fixed: [ruby-core:05706]
-
-	* gc.c (rb_memerror, ruby_xmalloc, ruby_xrealloc, rb_newobj): just
-	  abandon if no memory available, when interpreter is not running.
-	  [ruby-dev:27104]
-
-	* gc.c (garbage_collect): return whether GC could run.
-
-	* dir.c (rb_push_glob): fix delimiter bug.  fixed: [ruby-dev:27105]
-
-	* dir.c (dir_s_aref, dir_s_glob): allow multiple patterns.
-	  [ruby-dev:27110]
-
-	* win32/win32.c (cmdglob): enable brace expansion.
-
-Fri Sep 16 18:34:01 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/node.c (syck_replace_str): was using return from the
-	  void function.  a patch from MIYAMUKO Katsuyuki
-	  <miyamuko at mtb.biglobe.ne.jp>.  [ruby-dev:27111]
-
-Fri Sep 16 14:48:48 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: fix typo on MultiTkIp#bg_eval_string
-
-Fri Sep 16 12:02:12 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_resolver_transfer): remove C++ style
-	  comment (//).  [ruby-core:05793]
-
-Fri Sep 16 00:17:03 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/logger/test_logger.rb: unintentionally overwritten changes by
-	  Usa.  reverted.
-
-Fri Sep 16 00:03:11 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI::Socket#initialize): should set
-	  $stdout.binmode.
-
-Thu Sep 15 23:25:21 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/{soap,wsdl,xsd}, test/{soap,wsdl,xsd}: imported soap4r/1.5.5.
-
-	  #nnn is a ticket number at http://dev.ctor.org/soap4r
-
-	  * SOAP
-
-	    * allow to configure an envelope namespace of SOAP request. (#124)
-		TemporaryNamespace = 'http://www.w3.org/2003/05/soap-envelope'
-		@client.options["soap.envelope.requestnamespace"] =
-		  TemporaryNamespace
-		@client.options["soap.envelope.responsenamespace"] =
-		  TemporaryNamespace
-		@client.do_proc(...)
-
-	    * let SOAP request XML indent space configurable.  see
-	      "soap.envelope.no_indent" option. (#130)
-
-	    * let external CES configurable.
-	      ex. client["soap.mapping.external_ces"] = 'SJIS'.  $KCODE is used
-	      by default. (#133)
-		external CES ::= CES used in Ruby object of client and server
-		internal CES ::= CES used in SOAP/OM
-
-	    * add iso-8859-1 external CES support. (#106)
-
-	    * fixed illegal 'qualified' handling of elements.  it caused
-	      ASP.NET interoperability problem. (#144)
-
-	    * added 'soap.envelope.use_numeric_character_reference' (boolean)
-	      option to let query XML use numeric character reference in XML,
-	      not plain UTF-8 character.  !GoogleSearch server seems to not
-	      allow plain UTF-8 character since 2005-08-15 update. (#147)
-
-	    * SOAP::Header::SimpleHeader (de)serialization throws an exception
-	      on !SimpleHeader.on_(in|out)bound when header is a String.  so we
-	      could not use a simple single element headerItem.  fixed.  thanks
-	      to emil. (#129)
-
-	    * out parameter of rpc operation did not work.  (#132)
-
-	    * follow HTTP redirect only if using http-access2.  (#125) (#145)
-
-	    * add a workaround for importing an WSDL whose path begins with
-	      drive letter.  (#115)
-
-	  * WSDL
-
-	    * SOAP Data which is defined as a simpletype was not mapped
-	      correctly to Ruby obj when using wsdl2ruby.rb generated classdef
-	      file. (#123)
-
-	    * rpc/literal support. (#118)
-
-	    * re-implemented local element qualify/unqualify control.  handles
-	      elementFormDefault and form in WSDL.  (#119)
-
-	    * Array of an element which has simpleType causes a crash. (#128)
-
-	    * prarmeterOrder may not contain return part so it can be shorter
-	      than parts size.  Thanks to Hugh.  (#139)
-
-	  * Samples
-
-	    * added !BasicAuth client sample. (#117)
-
-	    * added Base64 client/server sample.
-
-	    * added Flickr SOAP interface client sample. (#122)
-
-	    * added !SalesForce client sample. (#135)
-
-	    * updated Thawte CA certificate for !GoogleAdWords sample.
-
-	    * updated a client script with the newer version made by Johan.
-	      thanks!
-
-	    * shortened long file names. (#120)
-
-	    * fixed typo in authheader sample. (#129)
-
-	    * updated deprecated method usage.  (#138)
-
-Thu Sep 15 22:40:27 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_signal.rb (test_exit_action): skip the test using
-	  fork on fork-less platforms.
-
-Thu Sep 15 13:54:33 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: add :read_timeout option.
-	  [ruby-core:4848]
-
-Thu Sep 15 11:39:18 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/dialog.rb: If a dialog does not show up yet,
-	  TkDialogObj#name raises an exception. [ruby-talk:156109]
-
-Thu Sep 15 11:01:58 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_pipe_exec): remove unnecessary CloseHandle().
-
-	* win32/win32.c (extract_console_fd, peek_console): new functions.
-
-	* win32/win32.c (rb_w32_select): check consoles by polling them.
-
-Thu Sep 15 00:18:24 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/telnet.rb (Net::Telnet::waitfor): replace sysread with
-	  readpartial.  [ruby-talk:127641]
-
-Wed Sep 14 23:28:28 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (collect_file_fd): rename from extract_file_fd.
-
-	* win32/win32.c (extract_pipe_fd, peek_pipe): new functions.
-
-	* win32/win32.c (rb_w32_select): check pipes by polling them.
-
-Wed Sep 14 22:40:26 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (ruby_glob): glob function not using ruby exception system.
-
-Wed Sep 14 17:24:22 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c: changed `foo (*bar)_((boo))' to `foo (*bar)(boo)`.
-
-	* enumerator.c, eval.c, gc.c, intern.h, io.c, process.c, ruby.c,
-	  ruby.h, signal.c: ditto.
-
-Wed Sep 14 15:06:22 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bignum.c: changed `foo _((boo))' to `foo(boo)`. [ruby-dev:27056]
-
-	* defines.h, dir.c, dln.h, enumerator.c, env.h, error.c, eval.c, file.c,
-	  gc.c, hash.c, inits.c, intern.h, io.c, lex.c, marshal.c, missing.h,
-	  node.h, numeric.c, pack.c, process.c, re.h, ruby.c, ruby.h, rubyio.h,
-	  rubysig.h, signal.c, sprintf.c, st.h, string.c, struct.c, time.c,
-	  util.c, util.h, variable.c: ditto.
-
-Tue Sep 13 22:09:40 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb (Logger): added formatter accessor to logger for
-	  dictating the way in which the logger should format the messages it
-	  displays.  Thanks to Nicholas Seckar (cf. [ruby-talk:153391]) and
-	  Daniel Berger.
-
-	* lib/logger.rb (Logger): added VERSION constant.
-
-	* lib/logger.rb: removed document for LogDevice. It is an
-	  implementation detail and is not a public interface.
-
-	* test/logger/test_logger.rb: added tests.
-
-Tue Sep 13 21:47:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (BEGIN_CALLARGS): pop halfly pushed status.
-	  fixed: [ruby-dev:26881]
-
-Tue Sep 13 20:24:37 2005  Tanaka Akira  <akr@m17n.org>
-
-	* ruby.h (PRINTF_ARGS): new macro for printf style argument checking.
-
-Tue Sep 13 15:41:29 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: wrote docuemntation of HTTPRequest/HTTPResponse
-	  classes.
-
-Tue Sep 13 14:27:47 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* string.c, missing.h: failed to build on powerpc-apple-darwin7.9.0
-	  because of crypt argument's constness mismatch. (I hope this works)
-	  (http://mput.dip.jp/autobuild/ruby-trunk/log/20050913T110001.gz)
-
-Tue Sep 13 12:33:05 2005  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml.rb: reworking YAML::Stream to use the new
-	  emitter.
-
-	* lib/yaml/stream.rb: ditto.
-
-	* lib/yaml/rubytypes.rb: added Object#yaml_new.
-
-	* lib/yaml/tag.rb: the tag_subclasses? method now
-	  shows up in the class.  allow taguri to be set using an accessor.
-	  continue support of Object#to_yaml_type.
-
-	* ext/syck/rubyext.c: new emitter code.  yaml_new and yaml_initialize
-	  get called, should they be present.  consolidated all the diaspora of 	  internal node types into the family below YAML::Syck::Node -- Map,
-	  Seq, Scalar -- all of whom are SyckNode structs pointing to
-	  Ruby data.  moved Object#yaml_new into the node_import and made it
-	  the default behavior.  the target_class is always called wih
-	  yaml_new, prepended a parameter, which is the klass.  loaded nodes
-	  through GenericResolver show their style.
-	  new Resolver#tagurize converts type ids to taguris.
-
-	* ext/syck/implicit.re: were 'y' and 'n' seriously omitted??
-
-	* ext/syck/emitter.c: renovated emitter, walks the tree in advance.
-	  consolidated redundant block_styles struct into
-	  the scalar_style struct.  (this means loaded nodes can now
-	  be sent back to emitter and preserve at least its very basic
-	  formatting.)
-
-	* ext/syck/gram.c: headless documents of any kind allowed.
-
-	* ext/syck/node.c: new syck_replace_str methods and syck_empty_*
-	  methods for rewriting node contents, while keeping the ID
-	  and other setup info.  added syck_seq_assign.
-
-	* ext/syck/syck.h: reflect block_styles and new node functions.
-
-Tue Sep 13 08:09:18 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ostruct.rb (new_ostruct_member): Object#send no longer call
-	  private methods.  [ruby-dev:27044]
-
-	* test/rss/test_dublincore.rb, test/rss/test_trackback.rb,
-	  test/ruby/test_eval.rb, test/socket/test_socket.rb: ditto.
-
-	* test/ruby/test_lambda (test_call_with_block): lambda makes new scope
-	  for formal block parameter.
-
-Tue Sep 13 01:17:45 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_save_safe_level): no need to restrict safe level
-	  memoize in $SAFE>=3.  [ruby-dev:27050]
-
-Tue Sep 13 00:02:33 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (apply2files): stricter callback definition.
-
-	* file.c (rb_path_check): constified.
-
-Mon Sep 12 20:53:06 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/openssl/test_pkcs7.rb (test_enveloped): skip this test
-	  to avoid a bug of PKCS7_enctypt() (only if ext/openssl is
-	  compiled with OpenSSL-0.9.7d or earlier versions).
-	  http://www.mail-archive.com/openssl-dev@openssl.org/msg17376.html
-
-Mon Sep 12 20:32:00 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.[hc] (rb_w32_argv_size, ...): reverted my latest change
-	  to avoid incompatible pointer warning. (mingw32)
-
-Mon Sep 12 19:58:53 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dln.c: avoid warning of const to non-const convertion.
-	  [ruby-dev:27041]
-
-	* eval.c, io.c, ruby.c: ditto.
-
-Mon Sep 12 19:26:29 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* array.c: moved to ANSI function style from K&R function style.
-	  (used protoize on windows, so still K&R remains on #ifdef part of
-	   other platforms. And  `foo _((boo))' stuff is still there)
-	   [ruby-dev:26975]
-
-	* bignum.c, class.c, compar.c, dir.c, dln.c, dmyext.c, enum.c,
-	  enumerator.c, error.c, eval.c, file.c, gc.c, hash.c, inits.c,
-	  io.c, main.c, marshal.c, math.c, numeric.c, object.c, pack.c,
-	  prec.c, process.c, random.c, range.c, re.c, regcomp.c, regenc.c,
-	  regerror.c, regexec.c, regparse.c, regparse.h, ruby.c, signal.c,
-	  sprintf.c, st.c, string.c, struct.c, time.c, util.h, variable.c,
-	  version.c: ditto.
-
-Mon Sep 12 14:03:33 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/dbm/test_dbm.rb: remove locking test, which may not be
-	  supported on some platforms.  [ruby-dev:27030]
-
-Sun Sep 11 23:23:02 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (starttls): supported the STARTTLS command.
-
-Sun Sep 11 22:18:07 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* bin/erb (ERB::Main#run): set ERB#filename so that it is used
-	  when reporting syntax/runtime errors. Tabs converted to spaces.
-
-Sat Sep 10 22:34:19 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c, bignum.c: protoize.
-
-Sat Sep 10 00:23:01 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (splat_value): simpler and consistent array conversion
-	  for argument splat.  [yarv-dev:599]
-
-Fri Sep  9 16:45:25 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_times): make empty strings to keep taintness,
-	  and a little improvement.  [ruby-dev:26900]
-
-	* ext/iconv/iconv.c (iconv_try), ext/iconv/extconf.rb: get rid of meta
-	  characters in command line option.  fixed: [ruby-talk:155369]
-
-	* ext/iconv/iconv.c: protoized.
-
-Thu Sep  8 14:58:11 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* merged a patch from Takahiro Kambe <taca at back-street.net> to
-	  support DragonFly BSD.  [ruby-dev:26984]
-
-Thu Sep  8 13:14:57 2005  Tadashi Saito  <shiba@mail2.accsnet.ne.jp>
-
-	* missing/strchr.c (strrchr): fixed a bug in detecting NUL in a
-	  string.  [ruby-dev:26985]
-
-Wed Sep  7 17:29:27 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_engine.c (ossl_engine_s_by_id):
-	  OpenSSL::Engine.by_id calls given block before calling
-	  ENGINE_init (block parameter is the return value of this method
-	  itself).  this functionality is useful to load dynamic shared
-	  engines.
-
-		require "openssl"
-		pkcs11 = OpenSSL::Engine.by_id("dynamic"){|e|
-		  e.ctrl_cmd("SO_PATH", "/usr/lib/opensc/engine_pkcs11.so")
-		  e.ctrl_cmd("LIST_ADD", "1")
-		  e.ctrl_cmd("LOAD")
-		}
-		pkcs11.ctrl_cmd("PIN", "secret")
-		key = pkcs11.load_private_key
-
-	* ext/openssl/ossl_engine.c (ossl_engine_ctrl_cmd): new method
-	  OpenSSL::Engine#ctrl_cmd. it wraps ENGINE_ctrl_cmd_string.
-
-	* ext/openssl/ossl_engine.c (ossl_engine_get_cmds): new method
-	  OpenSSL::Engine#cmds. it returms engine command definitions.
-
-Wed Sep  7 15:48:37 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (asn1str_to_str): new function.
-
-	* ext/openssl/ossl_pkcs7.c: new class OpenSSL::PKCS7::RecipientInfo.
-	  this class wraps PKCS7_RECIP_INFO struct.
-
-	* ext/openssl/ossl_pkcs7.c: OpenSSL::PKCS7::Signer is renamed to
-	  OpenSSL::PKCS7::SignerInfo. ("Signer" remains as an alias of
-	  SignerInfo.)
-
-	* test/openssl/test_pkcs7.rb: new file.
-
-Wed Sep  7 12:55:08 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: abolish mod === tempfile to avoid a problem
-	  [ruby-dev:26967].
-
-Wed Sep  7 10:45:15 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_switch): convert all exceptions to
-	  SystemExit.  fixed: [ruby-core:05724]
-
-	* eval.c (rb_thread_terminated): show backtrace before propagate
-	  exceptions to main thread.
-
-Wed Sep  7 09:21:41 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.[hc] (rb_w32_utime): constified.
-
-	* win32/win32.h (rb_w32_stat): added prototype.
-
-	* win32/win32.[hc] (rb_w32_argv_size,rb_w32_join_argv,rb_w32_aspawn):
-	  changed `char *const *' to `const char *const *'. (constify string)
-
-Wed Sep  7 08:35:04 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in (MINIOBJS): miniruby on HP-UX can not load
-	  extension libraries.
-
-	* bignum.c (bignew_1, bigadd): K&R style argument actually can't be
-	  defined as char.
-
-	* missing/vsnprintf.c: ANSI compiler supports const keyword.
-
-	* ext/digest/sha2/extconf.rb: reject platforms which has inttypes.h
-	  but no 64bit integer.
-
-	* lib/mkmf.rb (what_type?): guesstimate type.
-
-	* ext/etc/etc.c (setup_passwd), ext/etc/extconf.rb: pw_age might be
-	  char*.  fixed: [ruby-core:05470]
-
-Wed Sep  7 08:32:07 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_times): should taint empty strings as well.
-
-	* object.c (Init_Object): make class_variable_{get,set} public.
-	  [ruby-dev:26965]
-
-Mon Sep  5 22:28:46 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt, mlhs_node, lhs, arg, method_call): aref_args might be
-	  nothing.  fixed: [ruby-dev:26952]
-
-	* ext/ripper/eventids2.c: added new tokens.  fixed: [ruby-dev:26952]
-
-Mon Sep  5 17:03:07 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/find.rb: should raise ENOENT if root entry does not exist.
-	  [ruby-list:41054]
-
-	* lib/ostruct.rb: a patch from Florian Gross <florgro at gmail.com>
-	  merged to allow recursive inspect (and to_s) for OpenStruct.
-	  [ruby-core:05532]
-
-Mon Sep  5 08:20:19 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/observer.rb: a patch from nornagon <nornagon at gmail.com>
-	  merged to allow arbitrary names for update methods.
-	  [ruby-core:05416]
-
-Mon Sep  5 07:01:12 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/openssl/lib/openssl/buffering.rb (Buffering#do_write):
-	  should clear data from the buffer which already been output.
-
-Sun Sep  4 15:01:35 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (f_arg): Ripper should not do semantic check.
-	  [ruby-dev:26948]
-
-Sat Sep  3 23:52:35 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_fcall): new method to avoid inefficiency of
-	  obj.instance_eval{send(...)} tricks.
-
-Sat Sep  3 13:59:31 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#descend): Pathname.new("./a/b/c").descend
-	  didn't yield "."
-	  (Pathname#ascend): ditto.
-
-Fri Sep  2 23:51:54 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_arg): f_norm_arg is a VALUE in ripper, not an ID.
-	  fixed: [ruby-dev:26942]
-
-	* lib: do not use __send__ to access private methods.  [ruby-dev:26935]
-
-Thu Sep  1 17:11:25 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): wrong condition for $SAFE restoration.
-
-Thu Sep  1 14:12:45 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: On Tcl8.5, MultiTkIp#invoke_hidden doesn't
-	  work (gives wrong order of arguments).
-
-	* ext/tk/lib/multi-tk.rb: add MultiTkIp#invoke_hidden_on_namespace
-	  to support '-namespace' option of 'interp invokehidden' command
-	  on Tcl8.5.
-
-Wed Aug 31 14:41:30 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (OPTFLAGS): default global optimization to
-	  disabled for all VC++ versions.  fixed: [ruby-dev:26897]
-
-Wed Aug 31 10:36:09 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* process.c (proc_detach, proc_setmaxgroups): missing argument type
-	  declaration. (I recommend ANSI-style function)
-
-Wed Aug 31 06:59:01 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_scan): already String#scan behaves differently
-	  regarding if block is given.
-
-Tue Aug 30 23:49:34 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c, dir.c, enum.c, hash.c, io.c, range.c, string.c, struct.c:
-	  let enumerable methods return Enumerator.  [ruby-dev:26924]
-
-	* intern.h (RETURN_ENUMERATOR): utility macro for enumerable methods.
-
-Tue Aug 30 23:25:45 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/debug.rb: no need to restart at exit.
-
-Tue Aug 30 23:20:19 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_rescue2): initialization miss.  fixed: [ruby-dev:26917]
-
-	* lib/mkmf.rb (xsystem, xpopen): no longer expand by Config.
-
-	* lib/mkmf.rb (link_command, cc_command, cpp_command): expand
-	  variables at once, and quote hdrdir.  fixed: [ruby-core:05680]
-
-	* lib/mkmf.rb (libpathflag): quote paths.
-
-Tue Aug 30 19:34:27 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/digest/md5/md5ossl.h, ext/digest/rmd160/rmd160ossl.h,
-	  ext/digest/sha1/sha1ossl.h: include <stddef.h> to avoid
-	  error in compilation with OpenSSL-0.9.8. [ruby-list:41068]
-
-Tue Aug 30 16:19:40 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/init.rb: bug fix. [ruby-dev: 26920]
-
-Tue Aug 30 16:13:00 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_count): new method.  [ruby-dev:26895]
-
-Tue Aug 30 12:45:15 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_send): do not call private methods if the receiver
-	  is specified.  [ruby-talk:153672]
-
-Mon Aug 29 19:47:18 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/rdoc/usage.rb: improper exceptions. [ruby-dev:26870]
-
-	* lib/rdoc/usage.rb: support the case when non-ruby code exists before
-	  shebang. (this is needed when ri.bat is executed on windows)
-
-Mon Aug 29 18:58:05 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/init.rb: make IRB -I option that is same befavior for ruby.
-	  [ruby-dev:26872]
-
-	* lib/irb/locale.rb: support to print help message when OS locale is
-	  ja_JP.utf-8. [ruby-dev:26872]
-
-Mon Aug 29 01:43:05 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#descend): new method.
-	  (Pathname#ascend): ditto.
-
-Mon Aug 29 00:35:09 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb: require 'date/format' instead of 'parsedate'.
-	  (Time.parse): extract fractional seconds using Date._parse.
-	  (Time.strptime): extract fractional seconds using Date._strptime.
-	  [ruby-talk:153859]
-
-Sat Aug 27 20:13:31 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/curses/curses.c ({curses,window}_clrtoeol): added. suggested
-	  by Reyn Vlietstra.
-
-	* ext/curses/curses.c: chtype in curses is not `char', rahter `long'.
-	  [ruby-Bugs:2298]
-
-	* ext/curses/view.rb: String =~ String is deprecated.
-
-Thu Aug 25 15:48:58 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/win32ole/win32ole.c: suppress warnings. (win32)
-
-Wed Aug 24 11:01:26 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/logger/test_logger.rb (test_shifting_size): should close log
-	  device before unlink, since some platform cannot unlink opened
-	  file.
-
-Tue Aug 23 06:07:02 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/digest.rb: added SHA224, SHA256, SHA384 and SHA512.
-	  these features are enabled if this library is compiled with
-	  OpenSSL 0.9.8 or later.
-
-	* test/openssl/test_digest.rb: add test for new digests.
-
-Tue Aug 23 05:47:04 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ns_spki.c (ossl_spki_initialize): try to decode
-	  the argument as a string.
-
-	* ext/openssl/ossl_ns_pki.c (ossl_spki_to_der): new method.
-
-	* ext/openssl/ossl_x509store.c (ossl_x509store_initialize): should
-	  set @time to avoid warning.
-
-	* ext/openssl/ossl_x509store.c (ossl_x509store_set_default_paths,
-	  X509_STORE_add_cert, X509_STORE_add_crl): should raise error if
-	  wrapped functions fails.
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_set_ciphers): fix error message.
-
-	* ext/openssl/ossl_x509req.c (ossl_x509req_set_attributes): get rid
-	  of unused variable.
-
-	* test/openssl/test_ns_spki.rb: add new file.
-
-	* test/openssl/test_x509store.rb: add test for error.
-
-Tue Aug 23 01:11:40 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* sprintf.c (ruby__sfvwrite): should move `buf' to the end of
-	  `result'. [ruby-dev:26859]
-
-Mon Aug 22 23:51:19 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: ONIG_OPTION_CAPTURE_GROUP conflicts with
-	  RE_OPTION_ONCE.  [ruby-dev:26852]
-
-Mon Aug 22 20:11:35 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD__sprint): needs to call vwrite function
-	  pointer.  fixed: [ruby-dev:26854]
-
-Sat Aug 20 23:55:25 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): update paren_nest for brackets [].
-
-Sun Aug 21 00:10:23 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/wsdl/xmlSchema/importer.rb (WSDL::XMLSchema::Importer#fetch): add
-	  a workaround for importing an WSDL whose path begins with drive
-	  letter.  [ruby-dev:26242]
-
-Sat Aug 20 22:05:25 2005  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* regexec.c (code_is_in_cclass_node): check code size.
-	  [ruby-dev:26840]
-
-Sat Aug 20 22:37:13 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb (write, shift_log?, shift_log): file shifting race
-	  condition bug fixed.  [ruby-dev:26764]
-
-	* test/logger/test_logger.rb: tests.
-
-Fri Aug 19 18:13:39 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb (Time.apply_offset): fix a problem with last day of
-	  month.  reported by Lucas Nussbaum.  [ruby-talk:152866]
-
-Thu Aug 18 11:05:36 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (socketpair_internal): need to call open_ifs_socket()
-	  to create sockets instead of winsock's socket().
-	  fixed: [yarv-dev:581]
-
-Wed Aug 17 23:58:05 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (terminate_process): take String message.
-
-	* eval.c (rb_thread_switch): propagate the exception caused thread
-	  termination directly.  fixed: [ruby-core:05552]
-
-Wed Aug 17 21:20:05 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb: ensure that symbol_to_option is private_class_method
-	  and all other methods are module_function
-	  fixed: [ruby-dev:26808]
-
-Wed Aug 17 00:05:46 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_add_method): preserve safe level in the environment
-	  where a method is defined .
-
-	* eval.c (rb_call0): restore preserved safe level in the method
-	  execution.
-
-	* parse.y (lambda): need separate block variable stack
-	  manipulation and lpar_beg maintenance.  based on a patch found
-	  in [ruby-core:05551] from Mauricio Fernandez <mfp at acm.org>.
-
-	* parse.y (parser_yylex): adjust lpar_beg after tLAMBEG and
-	  kDO_LAMBDA. [ruby-core:05551]
-
-Mon Aug 15 07:24:38 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h (rb_check_to_integer): add declaration.
-
-	* object.c (rb_to_integer, rb_check_to_integer): argument constified.
-
-Mon Aug 15 00:38:51 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_rescue2): reduce PUSH_TAG() as well as NODE_RESCUE.
-	  [ruby-dev:26800]
-
-	* range.c (range_check, range_init): reduce uselse exceptions.
-
-Mon Aug 15 00:34:11 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yycompile): remove unreachable code.  [yarv-dev:570]
-
-Sat Aug 13 22:16:12 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (remove_entry_secure): forgot final chdir.
-
-Sat Aug 13 22:07:49 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (remove_entry_secure): uses chdir(2) and check
-	  if current directory is correct. [ruby-dev:26100] [ruby-dev:26226]
-
-Sat Aug 13 21:11:05 2005  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_VARIANT class.
-
-	* ext/win32ole/tests/testall.rb: ditto.
-
-	* ext/win32ole/tests/testOLEVARIANT.rb: ditto.
-
-Sat Aug 13 18:51:26 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_block_pass): distinguish current block from others.
-	  fixed: [ruby-dev:26274]
-
-	* ext/stringio/stringio.c (strio_set_string): disallow nil.
-	  http://www.rubyist.net/~nobu/t/20050811.html#c05
-
-Sat Aug 13 08:01:59 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb: Kconv.kconv is now alias of Kconv.conv
-	* ext/nkf/lib/kconv.rb: remove nkf dependend symbols fomr SYMBOL_TO_OPTION
-
-Fri Aug 12 17:06:53 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_larglist): allow optional arguments even when
-	  parentheses are omitted.  based on Nobu's patch from
-	  http://www.rubyist.net/~nobu/t/20050805.html
-
-	* parse.y (parser_yylex): update & maintain lpar_beg for detect
-	  lambda parameters.
-
-Thu Aug 11 23:29:03 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c: keep holding string after closed.
-
-Thu Aug 11 20:48:40 2005  Tadashi Saito  <shiba@mail2.accsnet.ne.jp>
-
-	* numeric.c (fix_equal, fix_cmp, fix_gt, fix_ge, fix_lt, fix_le):
-	  reduce coercing when a method knows about a operand type.
-	  [ruby-dev:26789]
-
-Thu Aug 11 13:01:48 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss: fixed sort bug. [ruby-list:41018]
-
-	* lib/rss/1.0.rb (RSS::RDF::Channel#setup_maker_attributes):
-	  removed self.
-
-	* lib/rss/maker/base.rb (RSS::Maker::ItemsBase#<=>): use #date
-	  instead of @date.
-	  (RSS::Maker::Base::self.def_array_element): added #size.
-
-	* lib/rss/maker/1.0.rb
-	  (RSS::Maker::RSS10::Channel#to_rss,
-	   RSS::Maker::RSS10::Items::Item#to_rss): cleared dc_dates set
-	  upped by using #date.
-
-	* lib/rss/maker/dublincore.rb
-	  (RSS::Maker::ChannelBase, RSS::Maker::ItemsBase::ItemBase):
-	  fixed opposite alias.
-
-	* test/rss/test_setup_maker_1.0.rb
-	  (RSS::TestSetupMaker10::test_setup_maker_items_sort): added some
-	  tests for RSS::Maker::ItemsBase#do_sort.
-
-Wed Aug 10 12:01:20 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb: simplifies Delegator classes; SimpleDelegator
-	  now uses method_missing for all methods.
-
-Wed Aug 10 10:38:50 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_mul0): multiply two numbers (x, y) without
-	  normalizing the result.  x should be a big number.
-	  [ruby-dev:26778]
-
-	* bignum.c (rb_big_pow): use rb_big_mul0() instead of
-	  rb_big_mul().
-
-	* array.c (rb_ary_or, rb_ary_and, rb_ary_plus, rb_ary_diff):
-	  revert the change on 2005-08-03.  Set operation on other item
-	  should have in separate methods.
-
-	* parse.y (shadowing_lvar_gen): warn when arguments shadows
-	  external local variables.
-
-	* parse.y (f_opt): optional arguments should not clobber external
-	  local variables.
-
-	* parse.y (f_rest_arg): rest arguments should not clobber external
-	  local variables.
-
-Wed Aug 10 10:29:40 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fix bug on handling __ruby2val_optkeys().
-
-	* ext/tk/lib/tk/itemconfig.rb: fix bug on handling
-	  __item_ruby2val_optkeys().
-
-	* ext/tk/lib/tk/canvas.rb: didn't check __item_ruby2val_optkeys().
-
-	* ext/tk/lib/tkextlib/blt/component.rb: ditto.
-
-Tue Aug  9 21:53:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (formal_assign): let default values override
-	  arguments to zsuper.  fixed: [ruby-dev:26743]
-
-Tue Aug  9 20:30:19 2005  Tadashi Saito  <shiba@mail2.accsnet.ne.jp>
-
-	* bignum.c (rb_big_coerce): allow bignum x bignum coercing.
-	  [ruby-dev:26778]
-
-Tue Aug  9 15:12:04 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: remove dangerous 'rb_jump_tag's.
-
-	* ext/tk/lib/tk.rb: add __val2ruby_optkeys and __ruby2val_optkeys to
-	  help to convert option values between ruby and tcl.
-
-	* ext/tk/lib/tk/itemconfig.rb: add __item_val2ruby_optkeys and
-	  __item_ruby2val_optkeys to help to convert option values between
-	    ruby and tcl.
-
-	* ext/tk/lib/tk/radiobutton.rb: use __ruby2val_optkeys for 'variable'
-	  option (for the reason of backward compatibility).
-
-	* ext/tk/lib/tk/composite.rb: clarify the arguments of super().
-
-	* ext/tk/lib/tk/spinbox.rb: ditto.
-
-	* ext/tk/lib/tk/text.rb: ditto.
-
-	* ext/tk/lib/tk/validation.rb: ditto.
-
-	* ext/tk/lib/tkextlib/*: support to treat tkvariable-type
-	  configure options.
-
-Tue Aug  9 08:24:05 2005  Mauricio Fernandez  <mfp@acm.org>
-
-	* parse.y (f_block_arg), eval.c (rb_yield_0): deal with dynamic
-	  variable lambda arguments.  [ruby-core:05540]
-
-Mon Aug  8 22:13:48 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (assign): deal with new block argument.
-	  fixed: [ruby-core:05536]
-
-	* eval.c (rb_node_arity): follow change of NODE_ARGS.
-	  fixed: [ruby-dev:26761]
-
-Mon Aug  8 21:28:13 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_fnmatch.rb: separated from test_file.rb.
-
-Mon Aug  8 20:40:35 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_method.rb: added.  [ruby-dev:26761]
-
-Mon Aug  8 01:26:37 2005  Mauricio Fernandez  <mfp@acm.org>
-
-	* parse.y (f_larglist): mistake in syntax rule.  [ruby-core:05535]
-
-Mon Aug  8 05:16:55 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.c (ossl_raise): should use ERR_peek_last_error
-	  to get last error on the current thread. And should report
-	  if errors are on the stack while OpenSSL.debug is true.
-
-	* ext/openssl/ossl.c (ossl_get_errors): new method for debugging
-	  this library.
-
-Mon Aug  8 05:15:19 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpproxy.rb (HTTPProxyServer#intialize),
-	  lib/webrick/httpserver.rb (HTTPServer#intialize),
-	  lib/webrick/httpservlet/cgihandler.rb (CGIHandler#initialize),
-	  lib/webrick/httpservlet/erbhandler.rb (ERBHandler#initialize),
-	  lib/webrick/httpservlet/filehandler.rb(DefaultFileHandler#initialize):
-	  super (called with no arguments) takes default value of optional
-	  arguments. [ruby-dev:26743]
-
-	* lib/webrick/httputils.rb: add a media-type "text/html" for .xhtml.
-
-Sun Aug  7 23:52:39 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_super.rb: added optional arg tests.  [ruby-dev:26743]
-	  the tests expects 1.8 behavior at this time.
-
-Sat Aug  6 12:35:24 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/{tk.rb,tk/itemconfig.rb}: configure creates
-	  TkVariable if key name is 'variable' or 'textvariable'
-	  by default. [ruby-dev:26749]
-
-	* ext/tk/lib/tk/{label,radiobutton}.rb: removed its own
-	  {variable,textvariable} function.
-
-	* ext/tk/lib/tk/variable.rb: retains backward conpatibility.
-
-Fri Aug  5 12:48:31 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c: fixed memory leak when tk_funcall raised
-	  exception. (copies argv into heap in tk_funcall instead of
-	  caller)
-
-Fri Aug  5 12:36:40 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): need to convert path separetor
-	  before invoking install command.
-
-Fri Aug  5 08:08:05 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (return_jump): fix "can't across thread" error message
-	  when no thread associated.
-	  http://www.namikilab.tuat.ac.jp/~sasada/diary/200507.html#d31
-
-Fri Aug  5 00:25:12 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c: refactoring - extract ruby string <->
-	  tcl object conversion as get_str_from_obj and get_obj_from_str.
-
-Fri Aug  5 00:19:33 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (Init_Enumerator): provided features should have
-	  extensions.
-
-	* eval.c (rb_feature_p): returns type of the feature instead of
-	  extension.
-
-	* eval.c (search_required): ruby library should be prior to statically
-	  linked extentions.  fixed: [ruby-dev:26711]
-
-	* eval.c (formal_assign): returns position of rest arguments variable.
-
-	* parse.y (f_rest_arg): use anonymous variable for rest arguments.
-	  fixed: [ruby-dev:26647]
-
-	* extmk.rb (extmake): needs to be wrapped in an Array.
-
-Thu Aug  4 20:03:18 2005  Tadashi Saito  <shiba@mail2.accsnet.ne.jp>
-
-	* numeric.c (Init_Numeric): do not share implementation among
-	  Fixnum#/ and Fixnum#div.  [ruby-core:05531]
-
-Thu Aug  4 18:38:36 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: cannot compile for Tcl7.6/Tk4.2.
-
-	* ext/tk/tcltklib.c: add nativethread consistency check.
-
-	* ext/tk/stubs.c: ditto.
-
-	* ext/tk/lib/tk.rb: forgot to define TclTkIp.encoding and encoding=
-	  when Tcl is 7.6 or 8.0.
-
-	* ext/tk/lib/tk/wm.rb: support to make some methods as options of
-	  root or toplevel widget. [ruby-talk:150336]
-
-	* ext/tk/lib/tk/root.rb: ditto.
-
-	* ext/tk/lib/tk/toplevel.rb: ditto.
-
-	* ext/tk/lib/tkextlib/SUPPRT_STATUS: update RELEASE_DATE
-
-Thu Aug  4 13:30:15 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_div): should not convert the result into
-	  integer.  [ruby-core:05524]
-
-Thu Aug  4 08:03:39 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): should not modify $mflags for each
-	  extentions.
-
-Thu Aug  4 00:25:48 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, Makefile.in, {bcc32,win32,wince}/Makefile.sub: integrated
-	  macro definitions.
-
-	* bcc32/Makefile.sub: LIBRUBY_SO should use DLDOBJS, not EXTOBJS.
-
-	* {win32,wince}/Makefile.sub: separate config.h for compiler versions.
-
-Thu Aug  4 00:24:59 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c: replacing is no longer needed.
-
-Wed Aug  3 21:59:16 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb: TkVariable#trace didn't work on
-	  TkVariable retrived from TkVariable.new_hash.ref. [ruby-dev:26721]
-
-Wed Aug  3 12:40:28 2005  Tadashi Saito  <shiba@mail2.accsnet.ne.jp>
-
-	* numeric.c (fix_plus): reduce coercing when a method knows about
-	  a operand type.  [ruby-dev:26723]
-
-	* numeric.c (fix_minus, fix_mul, fix_quo, fix_div, fix_mod,
-	  fix_divmod, fix_pow): ditto.
-
-	* bignum.c (rb_big_div, rb_big_modulo): export to reduce
-	  coercing.
-
-Wed Aug  3 10:13:52 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* configure.in, {bcc32,win32,wince}/Makefile.sub (HAVE_SNPRINTF,
-	  HAVE_VSNPRINTF): use win32/win32.c's implementation instead of
-	  missing/vsnprintf.c's.
-
-	* win32/win32.[ch] (rb_w32_snprintf, rb_w32_vsnprintf): reverted.
-
-Wed Aug  3 10:05:08 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check vsnprintf() and snprintf().
-
-	* sprintf.c, missing/vsnprintf.c: made vsnprintf() and snprintf()
-	  private.  fixed: [ruby-dev:26651]
-
-Wed Aug  3 08:22:13 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): revert [ruby-talk:111654]
-	  changes at 2004-09-07.  [ruby-dev:26656]
-
-Wed Aug  3 06:53:35 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_or): wraps the operand in an array if it is not
-	  an array.  [ruby-talk:150495] [EXPERIMENTAL]
-
-	* array.c (rb_ary_and, rb_ary_plus, rb_ary_diff): ditto.
-
-Tue Aug  2 10:23:12 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c: use Tcl_[GS]etVar2Ex instead of
-	  Tcl_Obj[GS]etVar2. (avoid Tcl_NewStringObj on supported platforms)
-
-	* ext/tk/tcltklib.c: use ip_{get,set,unset}_variable2_core from
-	  ip_{get,set,unset}_variable.
-
-	* ext/tk/tcltklib.c: replaced Tcl_Panic with rb_bug.
-
-Tue Aug  2 01:40:38 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/ping.rb (Ping.pingecho): should rescue StandardError.
-	  [ruby-dev:26677]
-
-Mon Aug  1 19:02:23 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c: refactoring - replaced rb_ivar_defined &
-	  rb_ivar_get with single rb_attr_get call.
-
-Mon Aug  1 18:44:08 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c (Tcl_GetStringResult): refactoring - define
-	  alternative macro on Tcl7.x or earlier.
-
-Mon Aug  1 13:53:55 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c (deleted_ip): refactoring - interpreter
-	  deletion check. [ruby-dev:26664]
-
-Mon Aug  1 01:08:21 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (check_insecure_method): use private_methods and
-	  protected_methods instead of respond_to? to check method visibility.
-	  [ruby-dev:26616]
-
-	* test/drb/drbtest.rb: ditto.
-
-	* test/drb/ut_drb.rb: ditto.
-
-Sat Jul 30 18:49:44 2005  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_TYPE#ole_typelib,
-	  WIN32OLE_TYPE#implemented_ole_types.
-
-	* ext/win32ole/tests/testOLETYPE.rb: ditto.
-
-Fri Jul 29 16:12:02 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/context.rb: fix `irb --readline` option. [ruby-dev:40955]
-
-Fri Jul 29 09:59:38 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_call0): fix calling zsuper from a method with anonymous
-	  rest argument.  [ruby-dev:26639]
-
-	* eval.c (rb_yield_0): push yielded node instead of yielding.
-	  fixed: [yarv-dev:549]
-
-Thu Jul 28 21:49:17 2005  IWATSUKI Hiroyuki  <don@na.rim.or.jp>
-
-	* parse.y (rb_parser_end_seen_p): exclude from ripper.
-	  <http://moonrock.jp/~don/d/200507.html#d28_t2>
-
-	* sprintf.c (clearerr): remove standard macro before re-definition.
-	  <http://moonrock.jp/~don/d/200507.html#d28_t3>
-
-Thu Jul 28 18:09:55 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/stubs.c: When --enable-tcltk-stubs, the initialize
-	  routine creates a Tcl/Tk interpreter and deletes it. However,
-	  init cost of Tk's MainWindow is not so small. And that makes it
-	  impossible to use libraries written with Tcl functions only on
-	  an environment without a graphical display. This changes support
-	  delaying initalization of Tk_Stubs until the script needs Tk.
-
-	* ext/tk/stubs.h: New file. Define prototypes and return codes of
-	  functions on stubs.c.
-
-	* ext/tk/tcltklib.c: Support delaying initalization of Tk_Stubs
-	  until the script needs Tk.
-
-	* ext/tk/tcltklib.c: Show friendly error messages for errors on
-	  initialization.
-
-	* ext/tk/tcltklib.c: Avoid SEGV on ip_finalize() when ruby is
-	  exiting and $DEBUG is true. (Not fix. If you know the reason of
-	  why, please fix it.)
-
-	* ext/tk/tkutil/tkutil.c (ary2list, ary2list2): bug fix on handling
-	  of encoding.
-
-	* ext/tk/lib/multi-tk.rb: MultiTkIp#eval_string and bg_eval_string
-	  don't work propery.
-
-	* ext/tk/lib/tk.rb: Forget extending Tk::Encoding module to Tk.
-
-	* ext/tk/lib/tk/variable.rb: TkVarAccess fails to initialize the
-	  object for an element of a Tcl's array variable.
-
-Thu Jul 28 17:23:37 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_larglist): allow block argument in lambda parameter
-	  list without parenthesis.
-
-Thu Jul 28 17:14:01 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (each_i): typo fixed.  [ruby-dev:26622]
-
-Thu Jul 28 15:04:11 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_arg): better argument name duplication check
-
-	* parse.y (new_args_gen): factored out name duplication check for
-	  optional and rest arguments.
-
-	* parse.y (new_bv_gen): allow shadowing outer local variables;
-	  warning remains.
-
-Thu Jul 28 13:46:06 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (ripper_warningS): the argument was omitted.
-	  [ruby-dev:26621]
-
-Thu Jul 28 11:30:57 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_larglist): allow bv_decl at the end of lambda
-	  argument list.  [EXPERIMENTAL]
-
-	* parse.y (new_bv_gen): allow local variable shadowing, with
-	  warning in verbose mode.
-
-Wed Jul 27 23:23:54 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (obj_free): make message format consistent with one from
-	  gc_mark().  [ruby-talk:149668]
-
-	* sprintf.c (quad_t): prepare quad_t as well.  [ruby-talk:149668]
-
-Wed Jul 27 22:11:37 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/tdiary_plugin: removed. because the plugin
-	  is imported in the tDiary plugin packages.
-
-Wed Jul 27 19:11:53 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (cd): follow :noop option change. (This patch
-	  is contributed by Doug Kearns)
-
-Wed Jul 27 16:25:59 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (lambda): Perl6 style -> lambda expression. [NEW]
-	  [VERY EXPERIMENTAL]
-
-Wed Jul 27 10:43:14 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (id2ref): must not assign pointers to long int.  use
-	  LONG_LONG instead if SIZEOF_LONG < SIZEOF_VOIDP.
-	  [ruby-talk:149645]
-
-	* ruby.h: use LONG_LONG to simplify the change.
-	  [ruby-talk:149645]
-
-Wed Jul 27 10:59:02 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_each): rewinddir(3) before iteration.
-	  [ruby-talk:149628]
-
-Wed Jul 27 02:34:58 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_throw): replace all '0x%lx' by '%p'.
-	  [ruby-talk:149553]
-
-	* missing/vsnprintf.c (BSD_vfprintf): '%p' need to handle 64bit
-	  size pointer.  [ruby-talk:149553]
-
-Tue Jul 26 22:41:28 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/lib/ripper/sexp.rb: new method Ripper.sexp_raw.
-
-	* ext/ripper/lib/ripper/sexp.rb (Ripper.sexp): returns more
-	  readable tree.  This is suggested by Kirill A. Shutemov.
-
-Tue Jul 26 22:05:12 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: merge a patch contributed by Daniel Berger,
-	  with some modification. (RubyForge #2128)
-
-Tue Jul 26 18:11:33 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h: support LLP64 model.  [ruby-talk:149524]
-
-Tue Jul 26 12:57:40 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/openssl_missin.c: include <openssl/engine.h> before
-	  <openssl/x509_vfy.h> to avoid compilation error of mswin32.
-	  suggested by NAKAMURA Usaku.
-
-Mon Jul 25 23:48:55 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.[ch]: (rb_w32_vsnprintf, rb_w32_snprintf): removed.
-
-Mon Jul 25 21:30:46 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: Borland MAKE doesn't look for file names which have paths
-	  from VPATH.  fixed: [ruby-dev:26604]
-
-	* ruby.h (NORETURN, DEPRECATED): moved just after config.h.
-
-	* {win32,wince}/Makefile.sub: vsnprintf() is in missing now.
-
-	* {bcc32,win32,wince}/Makefile.sub: moved CPPFLAGS only for ruby
-	  source to XCFLAGS.
-
-Mon Jul 25 14:10:02 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: fix en-bugged part in the last commit.
-
-Mon Jul 25 13:45:18 2005  NAJIMA Hiroki  <najima@mickey.ai.kyutech.ac.jp>
-
-	* io.c: check HAVE_SYS_IOCTL_H before including the header.
-	  [ruby-dev:26610]
-
-Sat Jul 23 16:48:12 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_engine.c (ossl_engine_s_load): should check
-	  OPENSSL_NO_STATIC_ENGINE.
-
-Sat Jul 23 11:46:30 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (rb_fd_select): the all three fd_sets must be long enough for
-	  select.  fixed: [ruby-talk:149059]
-
-Sat Jul 23 10:01:41 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_vsprintf, rb_sprintf): new functions return new String,
-	  using missing/vsnprintf.c.  [ruby-dev:26580]
-
-	*  missing/vsnprintf.c: made the output changeable.
-
-Fri Jul 22 21:06:08 2005  Tadashi Saito  <shiba@mail2.accsnet.ne.jp>
-
-	* bignum.c (rb_big_eq): reduce isnan().  [ruby-dev:26600]
-
-	* numeric.c (flo_eq, flo_gt, flo_ge, flo_lt, flo_le): ditto.
-
-Fri Jul 22 15:02:39 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: moved copyright description to lib/rss.rb.
-
-	* lib/rss.rb: added for convenience.
-
-	* sample/rss/re_read.rb: added #to_s sample.
-
-	* sample/rss/blend.rb: use 'require "rss"' instead of
-	  'require "rss/*"'.
-	* sample/rss/list_description.rb: ditto.
-	* sample/rss/rss_recent.rb: ditto.
-	* sample/rss/tdiary-plugin/rss-recent.rb: ditto.
-
-	* sample/rss/tdiary-plugin/rss-recent.rb: 0.0.6 -> 0.0.7.
-
-Fri Jul 22 14:37:43 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb (RSS::Parser#initialize): accept HTTP/FTP
-	  URI and local file path too.
-
-	* test/rss/test_parser.rb (RSS::TestParser#test_parse): test
-	  for the above.
-
-Fri Jul 22 07:01:42 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tkutil/tkutil.c (tk_conv_args): forget to revert
-	  thread_critical and gc_disable when raise ArgumentError.
-
-	* ext/tk/lib/remote-tk.rb: RemoteTkIp doesn't need to include TkUtil.
-
-	* ext/tk/tcltklib.c: add TclTkIp#has_mainwindow? method.
-
-	* ext/tk/lib/tk.rb: add Tk.has_mainwindow? method.
-
-	* ext/tk/lib/multi-tk.rb: add MultiTkIp#has_mainwindow? method.
-
-	* ext/tk/lib/remote-tk.rb: add RemoteTkIp#has_mainwindow? method.
-
-	* ext/tk/lib/multi-tk.rb: slave IP fail to exit itself when $SAFE==4.
-
-	* ext/tk/lib/multi-tk.rb: remove constants from MultiTkIp module to
-	  avoid access from external.
-
-	* ext/tk/lib/multi-tk.rb: check_root flag is ignored on slave IPs'
-	  mainloop.
-
-	* ext/tk/lib/multi-tk.rb: hang-up Tk.mainloop called on a slave IP
-	  with $SAFE==4.
-
-	* ext/tk/lib/multi-tk.rb: MultiTkIp#bg_eval_proc doesn't work
-	  properly.
-
-	* ext/tk/lib/multi-tk.rb: add MultiTkIp#set_cb_error(proc) and
-	  cb_error(exc) to log errors at callbacks on safe slave IPs.
-
-	* ext/tk/lib/multi-tk.rb: fail to get an available slave IP object
-	  when call Tk.mainloop in the block which is given to new_* method,
-	    because cannot finish initialize while the root widget is alive.
-
-	* ext/tk/lib/multi-tk.rb: fail to control a slave IP when Tk.mainloop
-	  runs on the IP.
-
-Thu Jul 21 01:00:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/{nkf.c,utf8tbl.c,config.h}:
-	  import 1.76
-	  [ruby-dev:26592] nkf constification
-
-Wed Jul 20 19:18:52 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (S_ISREG): need to define S_ISREG before it is used first.
-
-Wed Jul 20 18:33:15 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* io.c (wsplit_p): patch for the environment where
-	  fcntl(F_GETFL, O_NONBLOCK) is not supported. in that case,
-	  set FMODE_WSPLIT without fcntl check. [ruby-dev:26566]
-
-Wed Jul 20 18:07:11 2005  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (rb_io_ctl): update FMODE_WSPLIT_INITIALIZED and FMODE_WSPLIT
-	  by F_SETFL.
-
-Wed Jul 20 10:04:51 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_class_path): need to adjust snprintf() len for
-	  teminating NUL.  [ruby-dev:26581]
-
-Wed Jul 20 03:58:52 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/socket/socket.c: sorry, BeOS also uses HAVE_CLOSESOCKET,
-	  so reverted.
-
-	* ext/socket/extconf.rb: should not define HAVE_CLOSESOCKET
-	  on windows.
-
-Wed Jul 20 03:12:21 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/socket/socket.c: should not undef close() on win32.
-	  it's defined to rb_w32_close(), otherwise handle leaks.
-	  [ruby-Bugs-2131]
-
-Wed Jul 20 00:48:16 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (syserr_initialize): don't use str before StringValue()
-	  check.  [ruby-dev:26579]
-
-Tue Jul 19 22:47:29 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (syserr_initialize): add 1 byte for snprintf() size for
-	  NUL at the end.  [ruby-dev:26574]
-
-Tue Jul 19 17:16:34 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (trap): remove sigexit(); handle "EXIT" via sig_exec().
-	  [ruby-dev:26440]
-
-	* io.c (rb_io_inspect): replace sprintf() with "%s" format all
-	  over the place by snprintf() to avoid integer overflow.
-
-Tue Jul 19 14:10:50 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c: rbtk_eventloop_depth is used as int.
-
-	* ext/tk/tcltklib.c: rbtk_pending_exception is tested with
-	  NIL_P, so should assign Qnil instead of 0 (Qfalse).
-
-	* ext/tk/tcltklib.c (ip_invoke_real): fixed memory leak when
-	  ip is deleted.
-
-Tue Jul 19 13:19:46 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb: For symmetry, add TkVariable#string. It
-	  returns a string even if the default value type of the TkVariable
-	  object is not "string".
-
-Mon Jul 18 21:39:18 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* eval.c (rb_call0): make the pointer to NODE volatile
-	  instead of NODE itself.
-
-Mon Jul 18 14:32:21 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (rb_call0): make body volatile to avoid possible optimization
-	  problem.
-	  [ruby-dev:26195]
-
-Mon Jul 18 12:23:27 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/io/wait/wait.c: wrong backport from trunk, and compile error on
-	  platforms fd_set is not a bit set.  fixed: [ruby-dev:26562]
-
-Mon Jul 18 09:36:25 2005  Tanaka Akira  <akr@m17n.org>
-
-	* rubyio.h (FMODE_WSPLIT, FMODE_WSPLIT_INITIALIZED): new constant.
-
-	* io.c (wsplit_p): new function.
-	  (io_fflush): split writing data by PIPE_BUF if wsplit_p is true in
-	  multi-threaded mode.
-	  (io_fwrite): ditto.
-	  [ruby-dev:26540]
-
-Mon Jul 18 05:00:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: import nkf.c 1.73
-	  fix: TestKconv 1F
-
-Sun Jul 17 13:46:54 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/wait/extconf.rb, ext/io/wait/wait.c: Win32 platforms support.
-
-Sat Jul 16 23:43:16 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (Init_Enumerator): wrong argument specs.
-	  [ruby-core:05481]
-
-Sat Jul 16 15:52:50 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.[hc]: constified socket functions. [ruby-dev:26553]
-
-Fri Jul 15 23:59:03 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_c.rb (handle_class_module): handle a
-	  module enclosed in a built-in module.  fixed: [ruby-talk:148239]
-
-	* lib/rdoc/parsers/parse_c.rb (find_body): allow macros as methods.
-
-	* lib/rdoc/parsers/parse_c.rb (find_call_seq): allow :nodoc: modifier
-	  in C.  [ruby-core:04572]
-
-Fri Jul 15 23:20:03 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (Init_Enumerator): use an internal directly.
-
-Fri Jul 15 07:58:10 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#accept_client):
-	  sockets should be non-blocking mode. [ruby-dev:26405]
-
-	* lib/webrick/utils.rb (WEBrick::Utils.set_non_blocking): new method.
-
-Fri Jul 15 00:11:36 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enumeratorize): create new enumerator for current method if
-	  no block is given.
-
-	* enumerator.c: moved from ext/enumerator.
-
-Thu Jul 14 18:27:35 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_strerror): should return correct message
-	  for ENAMETOOLONG and ENOTEMPTY. (bcc32) [ruby-dev:26533]
-
-	* win32/win32.c (rb_w32_strerror): stripped CR LF on the tail.
-	  (bcc32) [ruby-dev:26533]
-
-Thu Jul 14 00:45:42 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* LEGAL (ext/nkf/nkf-utf8): updated from nkf1.7 to nkf-utf8.
-
-Wed Jul 13 22:44:00 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y: remove static variables.  [ruby-dev:26530]
-
-Wed Jul 13 19:36:29 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_mkdir): should set EEXIST (not EACCES)
-	  if file or directory already exists. (bcc32) [ruby-dev:26508]
-
-	* win32/win32.c (rb_w32_rmdir): should set ENOTDIR (not EINVAL)
-	  if it is not directory. (bcc32, win32)
-
-	* win32/win32.c (rb_w32_rmdir, rb_w32_unlink): restore
-	  FILE_ATTRIBUTE_READONLY flag on function failure.
-
-Wed Jul 13 12:40:00 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: TclTkLib.do_one_event doesn't work.
-
-	* ext/tk/lib/tk.rb: Tk.thread_update is available.
-
-Tue Jul 12 23:32:11 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: keep curdir unexpanded.
-
-Mon Jul 11 23:50:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c, intern.h (rb_proc_call, rb_obj_method, rb_method_call):
-	  export.
-
-	* ext/enumerator/enumerator.c (enumerator_with_index): [EXPERIMENTAL]
-	  added a new method Enumerator#with_index.  [ruby-talk:147728]
-
-Mon Jul 11 08:31:29 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regparse.c (fetch_escaped_value): mask values following \c in
-	  regexp.  fixed: [ruby-dev:26500]
-
-Sun Jul 11 05:18:17 2005  Michael Neumann  <mneumann@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb (XMLRPC::Server): Switch from GServer over to
-	  WEBrick. This makes file lib/xmlrpc/httpserver.rb obsolete (at least it is
-	  no further used by the XML-RPC library).
-
-Mon Jul 11 02:50:23 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI::Socket#request_line):
-	  mistook to merge the patch of [ruby-dev:26235] at
-	  revision 1.11.
-
-Sun Jul 10 23:58:04 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#unlink): try Dir.unlink first to
-	  avoid unlink a directory by root.
-	  cf. [ruby-dev:26237]
-
-Sun Jul 10 12:47:01 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/debug.rb (debug_command): added a deficient format specifier.
-	  fixed: [ruby-core:05419]
-
-Sat Jul  9 22:02:37 2005  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_method_dispid): convert dispid
-	  in Ruby and C by INT2NUM and NUM2INT.
-
-	* ext/win32ole/win32ole.c (ole_invoke2): ditto.
-
-	* ext/win32ole/test/testWIN32OLE.rb: ditto.
-
-	* ext/win32ole/test/testOLEMETHOD.rb: ditto.
-
-Fri Jul  8 15:45:04 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION): 0.1.4 -> 0.1.5.
-
-	* test/rss/test_version.rb (RSS::TestVersion#test_version):
-	  ditto.
-
-	* lib/rss/0.9.rb (RSS::Rss::Channel::Item::Category):
-	  domain attribute of <category> is optional. Thanks to
-	  Chris Lee <clee@kde.org>.
-
-	* test/rss/test_parser.rb (RSS::TestParser#test_category20):
-	  adjusted test case.
-
-Wed Jul  6 18:45:53 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_pattern_match): now returns nil.
-	  [ruby-core:05391]
-
-Mon Jul  4 14:35:52 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/svr.rb: service can be stopped by ill-behaved client; use
-	  tsvr.rb instead.
-
-Mon Jul  4 13:25:21 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* missing/erf.c: original erf.c by prof. Okumura is confirmed to
-	  be public domain.  reverted BSD implementation.
-
-Wed Jul  6 11:15:21 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (open_ifs_socket): new function.
-
-	* win32/win32.c (StartSockets, rb_w32_socket): use open_ifs_socket()
-	  instead of socket().
-	  all changes are derived from [ruby-core:5388].
-
-Wed Jul  6 00:15:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/{nkf.c,utf8tbl.c,config.h}:
-	  imported nkf.c 1.70 (support UTF-8-MAC)
-
-	* ext/nkf/lib/kconv.rb: add :utf8mac and :internalunicode
-
-Tue Jul  5 23:44:06 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb: expand source library path.
-
-Tue Jul  5 23:27:14 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (sort_2): get rid of yet another bcc's bug.
-	  fixed: [ruby-core:05152]
-
-	* eval.c (rb_thread_save_context): must not switch contexts during
-	  re-allocating stack.  fixed: [ruby-core:05219]
-
-Tue Jul  5 15:15:10 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tkutil.c: fix typo.
-
-Tue Jul  5 14:52:56 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: bug fix on treating Unicode strings.
-
-	* ext/tk/tcltklib.c: add methods to treat encoding mode.
-
-	* ext/tk/MANUAL_tcltklib.eng: add description of TclTkLib#encoding,
-	  encoding_system, and so on.
-
-	* ext/tk/MANUAL_tcltklib.eucj: ditto.
-
-	* ext/tk/tkutil/tkutil.c: fail to create a Tcl's list string from
-	  an array including multiple kind of encoded strings.
-
-	* ext/tk/lib/tk.rb: ditto.
-
-	* ext/tk/lib/multi-tk.rb: 2nd arg of _{to|from}UTF8 is omissible.
-
-	* ext/tk/lib/remote-tk.rb: ditto.
-
-	* ext/tk/lib/tk.rb: override TclTkLib#encoding and encoding= to
-	  use TkCore::INTERP.encoding and encoding=.
-
-	* ext/tk/lib/tk.rb: when "require 'tk'" and $KCODE=='NONE', check
-	  DEFAULT_TK_ENCODING to decide Ruby/Tk's system encoding mode.
-
-	* ext/tk/lib/tk/encodedstr.rb: check both of Tk.encoding and
-	  Tk.encoding_system. Tk.encoding has higher priority.
-
-	* ext/tk/lib/tk/optiondb.rb: ditto.
-
-	* ext/tk/lib/tk/spinbox.rb: ditto.
-
-	* ext/tk/lib/tk/validation.rb: ditto.
-
-	* ext/tk/lib/tk/namespace.rb: arguemnts for TclTkIp#_merge_tklist
-	  should be UTF-8 strings.
-
-Mon Jul  4 19:29:32 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/set.rb: test change to follow revision 1.28. (duck typing?)
-
-Mon Jul  4 11:23:50 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/{dbm,gdbm,sdbm}/test_{dbm,gdbm,sdbm}.rb: skip some tests
-	  which using fork on fork-less platforms.
-
-Sun Jul  3 23:26:30 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/wsdl/document/test_rpc.rb: compare formatted time string of
-	  Time objects instead of comparing Time objects itself to avoid
-	  unintended conflict of usec part.  [ruby-dev:26220]
-
-Sat Jul  2 22:41:04 2005  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c (unix_send_io, unix_recv_io): support x86-64 and
-	  IA64.
-
-Sat Jul  2 17:06:23 2005  Tanaka Akira  <akr@m17n.org>
-
-	* defines.h (FLUSH_REGISTER_WINDOWS): defined for IA64.
-	  (flush_register_windows): declare flush_register_windows.
-
-	* eval.c (flush_register_windows): new function.
-
-	* ruby.h (NOINLINE): move up to be effective in defines.h.
-
-Sat Jul  2 15:19:41 2005  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in: check select_large_fdset.
-
-	* eval.c: use select_large_fdset to support large file descriptors
-	  on Solaris.  [ruby-dev:26404]
-
-Fri Jul  1 17:55:08 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_neg): may be accessing bogus pointer value.
-
-Fri Jul  1 15:50:12 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* missing/erf.c: need to include some headers for some platforms.
-
-	* win32/win32.h (copysign, scalb): define for compatibility with
-	  other platforms. [ruby-dev:26430]
-
-Fri Jul  1 15:37:42 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* missing/crypt.c: modified to make it compilable on platforms
-	  other than BSD.  [ruby-dev:26430]
-
-	* missing/erf.c: ditto.  code from <exp.c> merged.
-
-Fri Jul  1 12:44:56 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI.open_http): refine post_connection_check
-	  call.
-
-Fri Jul  1 11:34:08 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* missing/crypt.c: replaced with 4.4BSD version.
-
-	* missing/erf.c: ditto.
-
-	* missing/vsnprintf.c: removed the third provision from the old
-	  BSD license.  [ruby-core:05177]
-
-Fri Jul  1 01:45:21 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_min, enum_max): must not return Qundef.
-	  fixed: [ruby-core:05299]
-
-Fri Jul  1 00:18:40 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator::respond_to): respond_to? must check
-	  destination object.  [ruby-talk:146894]
-
-Thu Jun 30 23:52:12 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (trap): non-string trap hander was ignored.
-	  fixed: [ruby-dev:26417]
-
-Thu Jun 30 19:00:21 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex::identify_number): alternative implements
-	  for [ruby-dev:26410]. And support a numeric form of 0d99999.
-
-Thu Jun 30 17:28:10 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex::identify_number): should not treat
-	  plain zero as an octal number.  [ruby-dev:26410]
-
-Thu Jun 30 15:13:16 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): pre-evaluate argument for unambiguous
-	  evaluation order.  [ruby-dev:26383]
-
-Thu Jun 30 14:48:23 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/http.rb (Net::HTTP#connect, Net::HTTP#request): should
-	  not send proxy username and password to origin servers.
-	  [ruby-dev:25673]
-
-	* lib/net/http.rb (Net::HTTP::ProxyDelta#edit_path): should not
-	  send HTTPS scheme URL to origine servers. [ruby-dev:25689]
-
-Thu Jun 30 09:53:56 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator::method_missing): forward unknown
-	  method to the destination.  suggested by
-	  <christophe.poucet@gmail.com>.  [ruby-talk:146776]
-
-Wed Jun 29 00:03:20 2005  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* regparse.c (fetch_token): avoid warning of unused goto tag.
-	  [ruby-dev:26389]
-
-Tue Jun 28 21:59:29 2005  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* dir.c, eval.c, parse.y, process.c, ruby.c: avoid warning "unused
-	  variable" [ruby-dev:26387]
-
-	* dir.c (glob_helper): avoid warning "enumeration value `RECURSIVE'
-	  not handled in switch" [ruby-dev:26392]
-
-Tue Jun 28 01:52:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb: add Kconv::VERSION
-	* ext/nkf/lib/kconv.rb (conv): can process arrayed options
-	* ext/nkf/nkf-utf8/nkf.c: imported Revision 1.69
-	* ext/nkf/nkf-utf8/utf8tbl.c: imported Revision 1.9
-
-Sat Jun 25 23:30:51 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (detach_process_watcher): terminate process watcher
-	  thread right after rb_waitpid() succeed.  [ruby-talk:146430]
-
-Sat Jun 25 17:12:20 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils.parse_query): should
-	  discard if key=val pair is empty. patch from Gary Wright.
-
-Sat Jun 25 15:49:18 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_min, enum_max, enum_min_by, enum_max_by): do not ignore
-	  nil as the first element.
-
-Sat Jun 25 15:13:54 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/set.rb (Set#==): [ruby-dev:25206] (ported from ruby_1_8 branch)
-
-Sat Jun 25 11:37:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb: remove constants
-	  Iconv_Shift_JIS, Uconv_EUC_JP, Iconv_UTF8
-	* ext/nkf/lib/kconv.rb: add module functions to Kconv
-	  conv, {eucjp, shiftjis, utf8}?, guess_as_symbol
-	* ext/nkf/lib/kconv.rb: add instance methods to String
-	  conv, {eucjp, shiftjis, utf8}?
-	* ext/nkf/lib/kconv.rb: add aliases Kconv.to_* and String#to_*
-
-Fri Jun 24 17:00:00 2005  Shigeo Kobayashi  <shigeo@tinyforest.jp>
-
-	* ext/bigdecimal/bigdecimal.c: patch from "NATORI Shin"
-	  (u-tokyo.ac.jp) applied to fix rounding bug.
-
-Fri Jun 24 13:17:45 2005  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/common.rb, lib/uri/generic.rb: fixed typo in documents and
-	  replaced some existent domain name with "example.com".
-
-Fri Jun 24 12:23:19 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fix typo on Tk.grid_propagate.
-
-	* ext/tk/lib/tk.rb: Tk.event_generate and TkWindow#event_generate
-	  accept TkEvent::Event object as context argument.
-
-	* ext/tk/lib/tk/event.rb: add TkEvent::Event#valid_fields and
-	  valid_for_generate to get field parameters of event_generate.
-
-Thu Jun 23 23:55:59 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* runruby.rb: should load built rbconfig.rb.
-
-Thu Jun 23 16:53:15 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/canvastag.rb: TkcGroup.new cannot include given items.
-	  TkcGroup#exclude calls wrong method.
-	  Add alias TkcGroup#add [ruby-talk:146049].
-
-	* ext/tk/lib/tk/canvas.rb: TkCanvas#dtag and some subcommands of
-	  TkCanvas#addtag fail to treat a TkcTag argument.
-
-	* ext/tk/lib/tk/event.rb: add TkEvent::Event#generate to help to send
-	  current event to other widgets.
-
-Mon Jun 20 18:44:04 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (FUNCTION_CALL_MAY_RETURN_TWICE): DUMMY_SETJMP is replaced
-	  because setjmp is not enough to fix getcontext and SPARC register
-	  window problem.
-
-Mon Jun 20 17:15:51 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dbm/dbm.c (fdbm_closed): new method DBM#closed?
-
-	* ext/gdbm/gdbm.c (fgdbm_closed): new method GDBM#closed?
-
-	* ext/sdbm/init.c (fsdbm_closed): new method SDBM#closed?
-
-	* test/dbm/test_dbm.rb, test/gdbm/test_gdbm.rb, test/sdbm/test_sdbm.rb
-	  (teardown): close all db objects before deleting data files.
-
-	* win32/win32.{ch} (unlink): hook runtime function to change
-	  file attribute before unlinking.
-	  merge from 1.8, see [ruby-dev:26360]
-
-Mon Jun 20 02:15:35 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (define_final): document fix: finalizers never get called
-	  before target object is destroyed.
-
-Mon Jun 20 01:26:49 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/openssl_missing.c, ext/openssl/ossl.h,
-	  ext/openssl/ossl_asn1.c, ext/openssl/ossl_bio.c,
-	  ext/openssl/ossl_pkcs12.h, ext/openssl/ossl_x509req.c: avoid
-	  compiler warnings. suggested by Michal Rokos.
-
-Sun Jun 20 00:22:02 2005  Michael Neumann  <mneumann@ruby-lang.org>
-
-	* lib/xmlrpc/utils.rb: Patch by Nobuhiro IMAI fixes the following
-	  problem: Default value modification on
-	  Module#public_instance_methods (false -> true) breaks
-	  s.add_handler(XMLRPC::iPIMethods("sample"), MyHandler.new) style
-	  security protection.
-
-	* lib/xmlrpc/client.rb: Aliased XMLRPC::Client#new2 as
-	  XMLRPC::Client#new_from_uri, and #new3 as #new_from_hash.
-
-Sun Jun 19 14:09:07 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (run_final): reduce unnecessary object allocation during
-	  finalization.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): deferred finalizers list should
-	  be cleared before calling them.  fixed: [ruby-talk:145790]
-
-Sat Jun 18 01:15:36 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline): do not set
-	  rl_{in,out}stream.
-
-	* ext/readline/readline.c (readline_s_set_input): new method.
-
-	* ext/readline/readline.c (readline_s_set_output): new method.
-
-	* lib/irb/input-method.rb: set Readline.input and Readline.output.
-
-Fri Jun 17 13:01:40 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb (Time.parse): fix previous leap seconds support.
-	  (Time.rfc2822): ditto.
-	  (Time.xmlschema): ditto.
-
-Thu Jun 16 15:41:32 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (load_file): '!' is already read. reported by gotoyuzo.
-
-Thu Jun 16 15:09:38 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c (ip_rb_threadVwaitCommand): Tcl_Release
-	  was missing.
-
-Thu Jun 16 13:34:48 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add Tk.getMultiple{Open|Save}File() which return
-	  an Array of selected files.
-
-Thu Jun 16 12:53:24 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb (Time.parse): "Fri Jan  1 08:59:60 +0900 1999" was
-	  parsed as "Fri Jan 01 09:00:00 JST 1999" even on an environment
-	  which supports leap seconds.
-	  (Time.rfc2822): ditto.
-	  (Time.xmlschema): ditto.
-
-Thu Jun 16 00:13:41 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Resource#ttl): new attribute.
-	  (Resolv::DNS::Resource#==): ignore @ttl.
-	  (Resolv::DNS::Resource#hash): ditto.
-	  (Resolv::DNS::Message::MessageDecoder#get_rr): save TTL in a
-	  Resource object.
-	  based on [ruby-core:5190] by Eric Hodel.
-
-Wed Jun 15 18:26:39 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: support "tk inactive" sub-command [for Tcl/Tk8.5a3]
-
-	* ext/tk/lib/tk/namespace.rb: support "namespace path" sub-command and
-	  'namespace ensemble' sub-command [for Tcl/Tk8.5a3]
-
-Tue Jun 14 02:02:43 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tkutil/tkutil.c: add TkUtil::CallbackSubst.subst_arg(m, ...)
-	  & _define_attribute_aliases(hash) to get substitution-argument from
-	  attributes (e.g. subst_arg(:x,:y,:num,:button) --> "%x %y %b %b ").
-
-	* ext/tk/lib/tk/event.rb: use _define_attribute_aliases().
-
-Mon Jun 13 13:03:08 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* hash.c (ruby_setenv): fixed SEGV. [ruby-dev:26186]
-
-Mon Jun 13 01:54:20 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (sigexit): call rb_thread_signal_exit() instead of
-	  rb_exit().  [ruby-dev:26347]
-
-	* eval.c (rb_thread_signal_exit): a new function to exit on main
-	  thread.
-
-	* eval.c (rb_thread_switch): exit status should be retrieved from
-	  ruby_errinfo.
-
-	* eval.c (rb_f_exit): ensure exit(0) should call
-	  exit(EXIT_SUCCESS).
-
-Mon Jun 13 01:20:02 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (rb_gc_mark_threads): curr_thread may not be part of the
-	  thread list.  [ruby-dev:26312]
-
-Sat Jun 11 22:34:44 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y: missing arg_paren event.  This patch is contributed by
-	  Mitchell N Charity.
-
-Fri Jun 10 23:55:17 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (unknown_node): show more information.  [ruby-dev:26196]
-
-Fri Jun 10 23:35:34 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* missing/mkdir.c: remove. [ruby-core:05177]
-
-Fri Jun 10 22:54:18 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing.h: fd_set stuffs need sys/types.h.  fixed: [ruby-core:05179]
-
-Thu Jun  9 23:58:12 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/Win32API/Win32API.c (Win32API_Call): disable global
-	  optimization. fixed: [ruby-core:05143]
-
-Thu Jun  9 23:35:22 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_inject): default the result value to Qundef to use
-	  first element as initial value if not given.
-
-Thu Jun  9 19:55:41 2005  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (ruby_longjmp): new macro to call longjmp, setcontext, etc.
-	  (ruby_setjmp): new macro to call setjmp, getcontext, etc.
-	  (ruby_setjmp): call setjmp before getcontext to avoid IA64 register
-	  stack problem.
-	  [ruby-talk:144939]
-
-	* gc.c (Init_stack): remove IA64_MAGIC_STACK_LIMIT.
-
-Thu Jun  9 18:24:16 2005  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in, eval.c, gc.c: use libunwind only on HP-UX.
-	  [ruby-dev:26297]
-
-Thu Jun  9 14:46:32 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (env_aset): do not treat nil as key-removing value.
-	  [ruby-list:40865]
-
-	* parse.y (method_call): allow aref expression ([]) to take a
-	  block.
-
-	* parse.y (block_dup_check): a function to check duplication of
-	  a block argument and an actual block.
-
-Thu Jun  9 11:55:34 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (SimpleDelegator::__setobj__): need check for
-	  recursive delegation.  [ruby-core:04940]
-
-Thu Jun  9 11:50:43 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb: add underscore aliases CGI::escape_html,
-	  CGI::unescape_html, CGI::escape_element, CGI::unescape_element.
-	  [ruby-core:05058]
-
-Wed Jun  8 18:47:10 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-expr-beg): fix looking point drift.
-
-Wed Jun  8 12:25:59 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_nitems): add the block feature to Array#nitems.
-	  suggested by Bertram Scharpf <lists@bertram-scharpf.de> in
-	  [ruby-talk:134083].
-
-Wed Jun  8 11:11:34 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (get2comp): revert all prior changes, and calculate
-	  proper 2's complement for negative numbers.
-
-Wed Jun  8 08:33:10 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_min_by, enum_max_by): return nil if no iteration.
-	  fixed: [ruby-dev:26245]
-
-	* eval.c (rb_need_block): ensure a block is given.
-
-	* eval.c (backtrace): skip successive frames sharing same node.
-
-Wed Jun  8 01:27:06 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bignorm): fixed a bug in normalizing negative numbers
-	  reported from Honda Hiroki <hhonda@ipflex.com>.  normalizing
-	  should not trim leading zeros from negative numbers.
-
-	* bignum.c (rb_cstr_to_inum): must remove leading zeros for this
-	  case.
-
-Wed Jun  8 00:15:08 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_getaddrinfo__aix): merged a patch from
-	  KUBO Takehiro <kubo at jiubao.org> to support AIX.  [ruby-list:40832]
-
-Wed Jun  8 00:09:01 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb (Array::to_yaml): merged a patch from
-	  Tilman Sauerbeck <tilman at code-monkey.de>.  [ruby-core:05055]
-
-	* lib/yaml/rubytypes.rb (Hash::to_yaml): ditto.
-
-Wed Jun  8 00:00:01 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c (curses_insertln): merged a patch from
-	  TAKAHASHI Tamotsu <ttakah at lapis.plala.or.jp>.  [ruby-ext:02305]
-
-Tue Jun  7 19:34:15 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/init.rb (IRB::IRB.rc_file_generators): more flexible
-	  IRB.rc_file_generators.  [ruby-core:05163]
-
-Tue Jun  7 18:39:31 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/thread.rb: RDoc documentation from Eric Hodel
-	  <drbrain@segment7.net> added.  [ruby-core:05148]
-
-Tue Jun  7 18:30:04 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): add .SUFFIXES from depend file.
-	  fixed: [ruby-dev:26294]
-
-Tue Jun  7 17:20:39 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): allow ';;' to be block terminator in
-	  place of 'end'.  [highly experimental]
-
-	* misc/ruby-mode.el (ruby-block-end-re): allow ';;' to be a
-	  negative indent trigger.  [highly experimental]
-
-	* parse.y (parser_yylex): small error fixed.
-
-Tue Jun  7 16:45:49 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): "respond_to?:foo" should be interpreted
-	  as "respond_to? :foo" at the command level.  [ruby-talk:144303]
-
-Tue Jun  7 16:32:53 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): raise exception on debug mode (-d),
-	  not verbose mode (-v/-w).  [ruby-core:05123]
-
-	* sprintf.c (rb_f_sprintf): warn always on verbose mode.
-
-Tue Jun  7 10:30:49 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: slave-ip fails to call procedures
-	  delegated by master-ip.
-
-Mon Jun  6 16:35:18 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/ripper/depend: add .y to .SUFFIXES for nmake.
-
-Sun Jun  5 23:00:35 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/console.rb: create console when required
-
-	* ext/tk/sample/tkextlib/tile/demo.rb: fix TypeError & create Console
-
-Sun Jun  5 10:23:52 2005  Tanaka Akira  <akr@m17n.org>
-
-	* signal.c (ruby_signal): don't set SA_RESTART.
-	  [ruby-dev:26276]
-
-Sat Jun  4 14:55:18 2005  Tanaka Akira  <akr@m17n.org>
-
-	* test/dbm/test_dbm.rb: merged from ext/dbm/testdbm.rb.
-
-	* test/gdbm/test_gdbm.rb: merged from ext/gdbm/testgdbm.rb.
-
-	* test/sdbm/test_sdbm.rb: renamed from ext/sdbm/testsdbm.rb with
-	  modification to use test/unit.
-
-Fri Jun  3 23:23:02 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h (rb_fdset_t): deal with fd bit sets over FD_SETSIZE.
-	  fixed: [ruby-dev:26187]
-
-	* eval.c (rb_fd_init, rb_fd_term, rb_fd_zero, rb_fd_set, rb_fd_clr,
-	  rb_fd_isset, rb_fd_copy): ditto.
-
-	* io.c (rb_io_wait_readable, rb_io_wait_writable, rb_f_select): ditto.
-
-	* ext/io/wait/wait.c (io_wait): ditto.
-
-	* ext/socket/socket.c (wait_connectable, unix_recv_io): ditto.
-
-Fri Jun  3 14:06:12 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: fix typo.
-
-Thu Jun  2 23:42:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y: pragma support on ripper.  [ruby-dev:26266]
-
-Thu Jun  2 00:02:16 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* struct.c: accessing >10 member caused segmentation fault.
-	  [ruby-dev:26247]
-
-	* test/ruby/test_struct.rb: test it.
-
-Wed Jun  1 11:30:09 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/Makefile.sub: can use single quote character in DESTDIR.
-	  [ruby-dev:26205]
-
-	* bcc32/Makefile.sub: Dir.glob in 1.9 doesn't treat \ as path separator.
-	  [ruby-dev:26254]
-
-Wed Jun  1 00:11:06 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (method_call): new experiment: "(expr)(args...)" to
-	  invoke "expr.call(args...)".  [EXPERIMENTAL]
-
-Tue May 31 23:43:41 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (command): revert implicit "call" for local variables.
-
-Tue May 31 15:52:45 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): should
-	  break the loop if the socket reached to EOF. [ruby-talk:142285]
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): send response
-	  without reading the whole request body if keep-alive is diabled.
-	  [experimental]
-
-Mon May 30 23:48:29 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/macpkg.rb: add PACKAGE_NAME information of Tcl/Tk
-	  Extension.
-
-	* ext/tk/lib/tk/msgcat.rb: ditto.
-
-	* ext/tk/lib/tk/winpkg.rb: ditto.
-
-	* ext/tk/lib/tkextlib/*: ditto.
-
-Sat May 28 16:39:21 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/openssl/test_x509store.rb: add test for expired CRL
-	  and refine some assertions.
-
-Sat May 28 05:15:44 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509store.c (ossl_x509stctx_set_time): should
-	  not set internal flag directry.
-
-Sat May 28 02:00:11 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI::Socket#request_line):
-	  ENV["REQUEST_URI"] is better to get correct Request-URI
-	  than ENV["SCRIPT_NAME"] + ENV["PATH_INFO"].  [ruby-dev:26235]
-
-Fri May 27 16:32:04 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb: use the semicolon as the path separator
-	  in the environment of MSYS.  fixed: [ruby-dev:26232]
-
-Thu May 26 20:31:21 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (remove_entry_secure): add documentation.
-
-	* lib/fileutils.rb (remove_entry_secure): should not invoke
-	  unlink(2) against a directory.
-
-Thu May 26 08:29:19 2005  Akiyoshi, Masamichi  <akiyoshi@hp.com>
-
-	* vms/vmsruby_private.c, vms/vmsruby_private.h: private routines
-	  for VMS port are added.
-
-	* eval.c (ruby_init): change to call VMS private intialization routine.
-
-Thu May 26 07:39:07 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (rm_r): use lchown(2), not chown(2).
-	  [ruby-dev:26226]
-
-	* lib/fileutils.rb (cd): remove :noop option. (feature change)
-
-	* lib/fileutils.rb (cp_r): should copy symlink as symlink, for
-	  also tree root. (feature change)
-
-	* lib/fileutils.rb (cp_r): new option :dereference_root.
-
-	* lib/fileutils.rb: new method remove_entry.
-
-	* lib/fileutils.rb: new method remove_entry_secure.
-
-	* lib/fileutils.rb: add documentation.
-
-Thu May 26 06:08:11 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add shortcut-methods of tk_call + tk_split_list
-
-Wed May 25 20:06:27 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: TkComm#tk_split_*list fail to split a kind of SJIS
-	  strings. To avoid the trouble, add arguments to control converting
-	  encoding, and do split on a UTF8 string.
-
-	* ext/tk/lib/multi-tk.rb: modify to attend encoding.
-
-	* ext/tk/lib/remote-tk.rb: ditto.
-
-	* ext/tk/lib/tk/itemconfig.rb: ditto.
-
-	* ext/tk/lib/tk/listbox.rb: ditto.
-
-	* ext/tk/lib/tk/namespace.rb: ditto.
-
-	* ext/tk/lib/tk/panedwindow.rb: ditto.
-
-	* ext/tk/lib/tk/text.rb: ditto.
-
-	* ext/tk/lib/tk/textmark.rb: ditto.
-
-	* ext/tk/lib/tk/texttag.rb: ditto.
-
-	* ext/tk/lib/tk/variable.rb: ditto.
-
-	* ext/tk/lib/tk/winfo.rb: ditto.
-
-	* ext/tk/lib/tkextlib/iwidgets/scrolledlistbox.rb: ditto.
-
-	* ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb: ditto.
-
-	* ext/tk/lib/tk.rb: add TkWindow#lower_window/raise_window and
-	  Tk#lower_window/raise_window by reason of method-name conflict
-
-	* ext/tk/lib/tk/canvas.rb: bug fix on TkCanvas#delete when given
-	  non-TkcItem arguments.
-
-	* ext/tk/lib/tkextlib/iwidgets/scrolledcanvas.rb: ditto.
-
-Wed May 25 19:48:12 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (rm_r): does chown(2). [ruby-dev:26199]
-
-Wed May 25 12:59:48 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI::Meta::RE_QUOTED_STRING): a content of
-	  quoted-string should be zero or more characters.
-
-Tue May 24 23:42:16 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_pow): support Fixnum ** Float case directly
-	  without coercing.  [ruby-talk:142697] [ruby-talk:143054]
-
-Tue May 24 16:57:24 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (require_libraries): caused SEGV when continuation jumped
-	  in to the required library code.
-
-Tue May 24 17:45:59 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/readline/test_readline.rb: do not test libedit.
-	  fixed: [ruby-dev:26217]
-
-Tue May 24 06:45:31 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-font-lock-syntactic-keywords): string
-	  literals to be matched non-greedy.
-
-Tue May 24 00:39:14 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/calc: method name 'set' was able to crash with a class Set.
-	  [ruby-dev:26210]
-
-	* test/wsdl/document/test_rpc.rb: dateTime comparison failed under
-	  TZ=right/Asia/Tokyo (with leap second.) [ruby-dev:26208]
-
-Mon May 23 16:23:06 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: Framework support on MacOS X Tiger.
-
-	* ext/tk/README.tcltklib: add description of Framework support options.
-
-Mon May 23 15:07:34 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub ($(PROGRAM)): add dependency on $(LIBRUBY_SO).
-	  [experimental]
-
-Mon May 23 12:21:37 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (make_regexp): should not return junk address during
-	  compile time.  [ruby-dev:26206]
-
-Sun May 22 21:54:06 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/{soap,wsdl,xsd}, test/{soap,wsdl,xsd}: imported soap4r/1.5.4.
-
-	  == SOAP client and server ==
-
-	  === for both client side and server side ===
-
-	  * improved document/literal service support.
-	    style(rpc,document)/use(encoding, literal) combination are all
-	    supported.  for the detail about combination, see
-	    test/soap/test_style.rb.
-
-	  * let WSDLEncodedRegistry#soap2obj map SOAP/OM to Ruby according to
-	    WSDL as well as obj2soap.  closes #70.
-
-	  * let SOAP::Mapping::Object handle XML attribute for doc/lit service.
-	    you can set/get XML attribute via accessor methods which as a name
-	    'xmlattr_' prefixed (<foo name="bar"/> -> Foo#xmlattr_name).
-
-	  === client side ===
-
-	  * WSDLDriver capitalized name operation bug fixed.  from
-	    1.5.3-ruby1.8.2, operation which has capitalized name (such as
-	    KeywordSearchRequest in AWS) is defined as a method having
-	    uncapitalized name. (converted with GenSupport.safemethodname
-	    to handle operation name 'foo-bar').  it introduced serious
-	    incompatibility; in the past, it was defined as a capitalized.
-	    define capitalized method as well under that circumstance.
-
-	  * added new factory interface 'WSDLDriverFactory#create_rpc_driver'
-	    to create RPC::Driver, not WSDLDriver (RPC::Driver and WSDLDriver
-	    are merged).  'WSDLDriverFactory#create_driver' still creates
-	    WSDLDriver for compatibility but it warns that the method is
-	    deprecated.  please use create_rpc_driver instead of create_driver.
-
-	  * allow to use an URI object as an endpoint_url even with net/http,
-	    not http-access2.
-
-	  === server side ===
-
-	  * added mod_ruby support to SOAP::CGIStub.  rename a CGI script
-	    server.cgi to server.rb and let mod_ruby's RubyHandler handles the
-	    script.  CGIStub detects if it's running under mod_ruby environment
-	    or not.
-
-	  * added fcgi support to SOAP::CGIStub.  see the sample at
-	    sample/soap/calc/server.fcgi.  (almost same as server.cgi but has
-	    fcgi handler at the bottom.)
-
-	  * allow to return a SOAPFault object to respond customized SOAP fault.
-
-	  * added the interface 'generate_explicit_type' for server side
-	    (CGIStub, HTTPServer).  call 'self.generate_explicit_type = true'
-	    if you want to return simplified XML even if it's rpc/encoded
-	    service.
-
-	  == WSDL ==
-
-	  === WSDL definition ===
-
-	  * improved XML Schema support such as extension, restriction,
-	    simpleType, complexType + simpleContent, ref, length, import,
-	    include.
-
-	  * reduced "unknown element/attribute" warnings (warn only 1 time for
-	    each QName).
-
-	  * importing XSD file at schemaLocation with xsd:import.
-
-	  === code generation from WSDL ===
-
-	  * generator crashed when there's '-' in defined element/attribute
-	    name.
-
-	  * added ApacheMap WSDL definition.
-
-	* sample/{soap,wsdl}: removed.
-
-Sun May 22 19:11:35 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLServer#intialize):
-	  should initialize session id context. [ruby-core:4663]
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_setup): add session id support.
-
-Sun May 22 12:30:58 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h, parse.y (ruby_pragma): removed.  fixed: [ruby-dev:26198]
-
-	* parse.y (parser_pragma): pragma name was ignored.
-
-Sun May 22 02:39:57 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (rm_r): new option :secure to avoid
-	  time-to-check-to-time-to-use security problem.  [ruby-dev:26100]
-
-	* lib/fileutils.rb (remove_file, remove_dir): try chmod(700) only
-	  on Windows.
-
-	* lib/fileutils.rb: does not depend on find.rb.
-
-	* lib/fileutils.rb: new method chmod_R.
-
-	* lib/fileutils.rb (chown_R): did not work.
-
-Sat May 21 10:23:21 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/Makefile.sub: tds files were not deleted when DESTDIR
-	  included '\' path delimiter. [ruby-dev:26193]
-
-Fri May 20 15:52:18 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_attempted_completion_function):
-	  return 2 items if completion_proc returns only 1 item (for libedit).
-
-Fri May 20 01:24:33 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/extconf.rb: check rl_vi_editing_mode() and
-	  rl_emacs_editing_mode().
-
-Thu May 19 23:33:09 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/readline.c: supported libedit. fixed: [ruby-core:4858]
-
-	* ext/readline/extconf.rb: added new option --enable-libedit.
-
-	* test/readline/test_readline.rb: added assertions for
-	  Readline::HISTORY.
-
-	* lib/irb/input-method.rb: do not use Readline::HISTORY.pop.
-
-Wed May 18 23:42:25 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (exc_exception): reverted to call Exception#initialize
-	  directly.  fixed: [ruby-dev:26177]
-
-Wed May 18 17:38:51 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dir.c (glob_helper): check whether path is "" before calling
-	  do_opendir.  [ruby-dev:26183]
-
-Wed May 18 13:40:48 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (NtInitialize): fix typo.
-
-Wed May 18 11:07:47 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (glob_helper): get rid of using String.  [ruby-dev:26180]
-
-	* eval.c (ruby_options), win32/win32.c (NtInitialize): move argument
-	  intialization back.  [ruby-dev:26180]
-
-Tue May 17 11:49:18 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (unixtime_to_filetime): use localtime() instead of
-	  gmtime() when using FileLocalTimeToFileTime().
-
-Mon May 16 22:42:52 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.h, {bcc32,win32,wince}/Makefile.sub: moved rb_[ugp]id_t
-	  to get rid of redefinition warnings on mingw.
-
-	* class.c (rb_class_init_copy): singleton class is disallowed to copy,
-	  from its definition.  fixed: [ruby-talk:142749]
-
-	* parse.y (pragma_encoding): add prototype to suppress false warning
-	  by VC.
-
-	* process.c (proc_spawn_v): use rb_w32_aspawn on Win32.
-
-Mon May 16 03:29:01 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.{h,c}: define rb_[pgu]id_t.
-
-Mon May 16 00:21:02 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#unlink): use SystemCallError instead of
-	  Errno::EISDIR because EISDIR is not portable.
-	  [ruby-core:5001]
-
-Sun May 15 22:28:10 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (DRbObject#method_missing): use raise(exception).
-	  [ruby-dev:26164]
-
-Sun May 15 18:56:35 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, ruby.h: define rb_[pgu]id_t macros instead of typedefs
-	  to get rid of types which might not be defined yet.  [ruby-dev:26165]
-
-Sun May 15 14:35:46 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#unlink): unlink a symlink to a directory
-	  was failed.  [ruby-core:4992]
-
-Sun May 15 09:57:30 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (unixtime_to_filetime): deal with DST.
-	  [ruby-talk:141817]
-
-Sat May 14 23:59:11 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (exc_exception, {exit,name_err,syserr}_initialize): call
-	  Execption#initialize.  fixed: [ruby-talk:142593]
-
-Sat May 14 23:56:41 2005  Erik Huelsmann  <ehuels@gmail.com>
-
-	* configure.in: Check for the availability of pid_t, gid_t and uid_t and
-	  remove AC_TYPE_UID_T.  fixed: [ruby-core:04745]
-
-	* defines.h: Remove pid_t typedef.
-
-	* ruby.h: Define rb_pid_t, rb_gid_t and rb_uid_t in accordance with
-	 the available system types.
-
-	* process.c: Change instances of pid_t and gid_t to their rb_*
-	 counterparts.
-
-	* ext/pty/pty.c: Change pid_t to rb_pid_t.
-
-	* vms/config.h: Define HAVE_{P,G,U}ID_T to 1.
-
-	* win32/Makefile.sub: Remove #define for {g,u}id_t.
-
-	* win32/win32.c: Change pid_t to rb_pid_t.
-
-	* wince/Makefile.sub: Remove #define for {g,u}id_t.
-
-	* wince/sys/types.h: Remove definitions of {p,g,u}id_t.
-
-Sat May 14 11:47:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h (ruby_pragma): prototype.  [ruby-core:04881]
-
-	* parse.y (parser_pragma): parse Emacsen hack.
-
-	* parse.y (parser_prepare): deal with specific syntax at the top.
-
-	* ruby.c (load_file): read the first line iff it started with shebang.
-
-Fri May 13 23:44:22 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: keep srcdir unexpanded.
-
-	* lib/mkmf.rb (create_makefile): quote topdir and hdrdir if necessary.
-	  fixed: [ruby-core:04932]
-
-	* lib/mkmf.rb (configuration), {bcc32,win32,wince}/Makefile.sub: make
-	  also INSTALL_PROG and INSTALL_DATA system dependent.
-	  fixed: [ruby-core:04931]
-
-Fri May 13 23:32:55 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (unknown_node): add volatile directive to prototype.
-
-Fri May 13 17:50:49 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* variable.c (generic_ivar_get): rb_attr_get should not warn.
-	  [ruby-dev:26010]
-
-Thu May 12 17:41:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: follow nkf 2.0.5
-
-Thu May 12 16:50:40 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/rdoc/parsers/parse_c.rb: more readability for mixing
-	  progress "c..." and warning message.
-
-Thu May 12 15:50:56 2005  Tilman Sauerbeck  <tilman@code-monkey.de>
-
-	* lib/rdoc/parsers/parse_c.rb: show parsing progress for C files.
-	  [ruby-core:4341]
-
-Thu May 12 09:53:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.c (ruby_show_version): flush for non-tty stdout.
-
-Thu May 12 01:23:55 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (unknown_node): ignore broken NODE to get rid of accessing
-	  possibly inaccessible address.  fixed: [ruby-dev:26122]
-	  should emit more useful information like [ruby-dev:26126], though.
-
-Wed May 11 15:58:39 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (break_jump): break should not cross functions.
-	  [ruby-list:40818]
-
-Wed May 11 10:41:54 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/tempfile.rb (Tempfile#unlink): fixed typo.
-
-Wed May 11 01:03:36 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (TMP_ALLOC): use macro NEW_NODE() to get rid of warnings on
-	  platforms which have no alloca().  fixed: [ruby-talk:141301]
-
-Sun May  8 23:17:47 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/timer.rb: fix typo.
-
-Sun May  8 21:00:50 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* hash.c (Init_Hash): remove custom "hash" and "eql?".
-	  (ported from 1.8) [ruby-dev:26132]
-
-Sun May  8 16:50:25 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/profiler.rb: fixed "undefined method `[]' for nil:NilClass"
-	  [ruby-core:4775] [ruby-talk:140401] [ruby-dev:26118]
-
-Sat May  7 22:58:00 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_var): no libs argument is given.
-
-Fri May  6 08:08:37 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c:rb_hash_hash_i() should be static.  [ruby-core:04815]
-
-	* re.c should include regint.h for declarations of oniguruma
-	  functions.  [ruby-core:04815]
-
-Sun May  1 09:15:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_sflag): replace '-' in variable names with '_'.
-	  [ruby-dev:26107]
-
-	* eval.c (rb_eval), parse.y (arg): reduce fixnum range literal at
-	  parser.  fixed: [ruby-dev:26113]
-
-Sat Apr 30 11:59:25 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_FUNC_ATTRIBUTE): check for function attribute.
-	  [ruby-dev:26109]
-
-	* eval.c, gc.c: moved noinline to configure.in.
-
-	* rubyio.h (DEPRECATED): moved to configure.in.
-
-	* ruby.h (DEPRECATED, NOINLINE): default definition.
-
-	* win{32,ce}/Makefile.sub (config.h): deprecated and noinline for
-	  __declspec() are available for VC++7 or later.
-
-Sat Apr 30 06:57:39 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb: new methods WEBrick::CGI#[], WEBrick::CGI#logger
-	  and WEBrick::CGI#config.  these are necessary to use an instance of
-	  WEBrick::CGI as the first argument of HTTPServlet#get_instance.
-	  (suggested by Tatsuki Sugiura)
-
-	* lib/webrick/cgi.rb
-	  (WEBrick::CGI#initalize): set a dummy to @config[:ServerSoftware]
-	  if SERVER_SOFTWARE environment variable is not given.
-	  (WEBrick::CGI#start): req.path_info must be a String.
-	  (WEBrick::CGI::Socket#request_line): treat REQUEST_METHOD, PATH_INFO
-	  and SCRIPT_NAME to run in console.
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils.escape_path): should
-	  not use String#split("/"). it removes trailing empty path component.
-
-Thu Apr 28 08:21:51 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_arg0): use also environment variable space for setting
-	  $0.  [ruby-core:04774]
-
-Wed Apr 27 23:42:22 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (OPTFLAGS): default global optimization to
-	  disabled only for VC++6.
-
-Tue Apr 26 22:58:00 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_invoke_core): call Tcl's "::unknown"
-	  command when can't get information of target command.
-
-Mon Apr 25 13:54:55 2005  speakillof  <speakillof@yahoo.co.jp>
-
-	* lib/rexml/encodings/SHIFT-JIS.rb: encoding and decoding were
-	  swapped. [ruby-core:4772]
-
-Mon Apr 25 01:18:43 2005  Tanaka Akira  <akr@m17n.org>
-
-	* oniguruma.h (OnigWarnFunc): add a variadic argument.
-	  [ruby-core:4751]
-
-Sat Apr 23 19:49:21 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c (ip_RubyExitCommand): exit with status code
-	  via TclTkIp#_eval didn't work. [ruby-talk:139390]
-
-Sat Apr 23 11:45:29 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_provided): should check also path name to be loaded.
-	  fixed: [ruby-dev:26093]
-
-Fri Apr 22 16:55:35 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tcltklib.c (ip_set_exc_message): fixed memory leak.
-
-	* ext/tk/tcltklib.c: eTkCallbackReturn was not initialized.
-
-Thu Apr 21 06:45:28 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_incpush_expand, proc_options): expand relative path
-	  given with -I option.  [ruby-dev:26090]
-
-	* configure.in, lib/mkmf.rb, {bcc32,win32,wince}/Makefile.sub: improve
-	  C++ support.  [ruby-dev:26089]
-
-Thu Apr 21 01:53:09 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: add rdoc.
-
-Thu Apr 21 00:07:50 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): support platforms have file separator
-	  other than /.
-
-	* {bcc32,win32,wince}/Makefile.sub (BUILD_FILE_SEPARATOR): separator
-	  of building platform.
-
-	* {bcc32,win32,wince}/Makefile.sub (CP, INSTALL): use COPY command.
-
-Wed Apr 20 23:22:39 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk: miniruby depends on MINIOBJS.
-
-	* dmydln.c (dln_load): dummy function to raise LoadError.
-
-	* cygwin/GNUmakefile.in, {bcc32,win32,wince}/Makefile.sub: miniruby
-	  can't load extensions on Windows.
-
-Wed Apr 20 23:01:35 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/ifchange.bat: delete testing files.
-
-Wed Apr 20 22:54:54 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: new method Net::HTTP.post_form.
-
-	* lib/net/http.rb: new method Net::HTTPHeader#set_form_data and
-	  its alias #form_data=.
-
-	* lib/net/http.rb: Net::HTTPHeader#add_header -> add_field
-	  (adjustted to Ruby 1.8).
-
-Wed Apr 20 10:53:30 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_rb.rb (lex_init): use IRB module.
-	  [ruby-core:04737]
-
-Wed Apr 20 07:27:18 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc32,win32,wince}/configure.bat, {bcc32,win32,wince}/setup.mak:
-	  add extout option.
-
-	* bcc32/setup.mak: make configuration variables overridable.
-
-Tue Apr 19 23:37:09 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/ftools.rb (File.safe_unlink): do not modify a symlinked file.
-
-Tue Apr 19 23:02:40 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (search_required): deal with features with path too.
-
-	* intern.h (rb_file_expand_path): prototype.  fixed: [ruby-dev:26082]
-
-Tue Apr 19 08:38:07 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (search_required, rb_require_safe): expand path in
-	  rb_features.  [ruby-dev:26079]
-
-	* file.c (rb_find_file_ext): return absolute path.
-
-	* ext/extmk.rb: expand path for ext/**/extconf.rb.
-
-	* eval.c (search_required): handle static linked extensions.
-
-Mon Apr 18 15:37:35 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_attr): attribute name check added.
-
-	* numeric.c (flo_plus): small typo fix.
-
-Mon Apr 18 11:25:14 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/zlib/zlib.c (zstream_run): fixed SEGV. [ruby-core:4712]
-
-Sun Apr 17 23:57:49 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake, parse_args): do not expand destdir.
-
-	* ext/extmk.rb (relative_from): treat mere drive letter as an absolute
-	  path.
-
-Sat Apr 16 17:01:16 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/tdiary_plugin/rss-recent.rb (rss_recent_cache_rss):
-	  use the first date information of items as site date information
-	  if channel doesn't have date information.
-
-Sat Apr 16 15:27:03 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_PROG_INSTALL): not add -p option to INSTALL.
-	  files need timestamps to be kept are only ar-archive on a few
-	  platforms, and be installed by instruby.rb but not INSTALL.
-	  fixed: [ruby-core:04721]
-
-	* mkconfig.rb: purge autoconf value variables.
-
-Sat Apr 16 10:33:48 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/Makefile.sub: quick hack... prepend DESTDIR.
-	  still have restriction on DESTDIR ("", "/", "e:")
-
-Sat Apr 16 03:59:42 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: check for OPENSSL_cleanse.
-
-	* ext/openssl/openssl_missing.h: ditto.
-
-Fri Apr 15 22:40:19 2005  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/tests/testWIN32OLE.rb: add test for WIN32OLE.codepage=
-
-	* ext/win32ole/tests/testOLETYPELIB.rb: correct expected message.
-
-Fri Apr 15 22:04:07 2005  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(ole_invoke): retry after converting Qnil
-	  to VT_EMPTY.
-
-Thu Apr 14 19:05:06 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper] (regexp): dispatch regexp option.
-	  [ruby-Bugs:1688]
-
-	* ext/ripper/lib/core.rb: regenerated (interface changed).
-
-Thu Apr 14 18:59:43 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (remove_file): ignore exceptions caused by
-	  chmod.
-
-	* lib/fileutils.rb (remove_dir): try to get rights to rmdir.
-	  [ruby-Bugs:1502]
-
-Thu Apr 14 18:51:02 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb, lib/irb/slex.rb: bug fix of [ruby-Bugs-1745]
-
-	* lib/irb/ext/loader.rb, lib/irb/ext/save-history.rb:
-	  fix location of @RCS_ID
-
-	* lib/irb/cmd/help.rb: a lost of release IRB 0.9.5.
-
-Thu Apr 14 15:10:30 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/notifier.rb, lib/irb/output-method.rb, lib/irb/ext/history.rb
-	  fixed warning of 'ruby -w'
-
-Thu Apr 14 05:35:45 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* doc/irb/irb.rd.ja: a lost  of release IRB 0.9.5.
-
-	* lib/irb/slex.rb: bug fix by [ruby-core:04707].
-
-Thu Apr 14 00:20:31 2005  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* bin/irb lib/irb.rb lib/irb/...: IRB 0.9.5.
-
-Wed Apr 13 23:40:21 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION): 0.1.3 -> 0.1.4.
-
-	* lib/rss/rss.rb (RSS::Element#converter): fixed converter
-	  transmission bug.
-
-Wed Apr 13 22:12:16 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#order!): call handlers iff matches
-	  non-switch.
-
-Wed Apr 13 21:20:35 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (mingw32): extract msvcr*.dll from objdump result.
-
-Wed Apr 13 19:25:31 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (mingw32): use actual runtime DLL name as ruby DLL
-	  name and default load path.
-
-	* win32/Makefile.sub, win32/setup.mak: ditto.
-
-Tue Apr 12 19:30:36 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#make_switch, OptionParser#order!):
-	  added non-option and end-of-args handler.  [ruby-talk:136878]
-	  [EXPERIMENTAL]
-
-Tue Apr 12 15:33:09 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_finalize): better modification than the
-	  previous commit [ruby-dev:26029].
-
-Tue Apr 12 12:38:06 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_finalize): fix SEGV when Tcl_GlobalEval()
-	  modifies the argument string to eval.
-
-Tue Apr 12 02:21:55 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_finalize): add existence check of
-	  Tcl commands before calling Tcl_GlobalEval().
-
-Mon Apr 11 23:36:04 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: [druby-ja:123] fix: When reference of my object is
-	  loaded, the object is tainted.
-
-	* test/drb/test_drb.rb: ditto.
-
-Mon Apr 11 22:18:23 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dir.c, file.c (lstat): avoid warnings for mingw.
-
-Mon Apr 11 20:11:06 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (ip_finalize): adhoc patch to avoid SEGV when exit
-	  on Tcl/Tk8.3.x.
-
-Mon Apr 11 15:24:20 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): shouldn't output hdrdir twice.
-
-Sat Apr  9 18:20:31 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/image.rb: support to create TkImage object without
-	  creating a new image object on Tk.
-
-	* ext/tk/lib/tk/menu.rb: use TkCommandNames on create_self()
-
-	* ext/tk/lib/tk/root.rb: TkRoot.to_eval() returns '.'.
-
-	* ext/tk/lib/tk/text.rb: add methods to create a TkText::IndexString
-	  from (x, y) coords.
-
-	* ext/tk/lib/tkextlib/tile/: add demo and update support status.
-
-Sat Apr  9 14:42:29 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/tdiary_plugin/rss-recent.rb: supported configuration
-	  via Web browser.
-
-Fri Apr  8 20:17:48 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): hdrdir needs to be defined also in
-	  Config::CONFIG.
-
-	* lib/mkmf.rb (configuration, create_makefile): get rid of recursive
-	  macro reference.
-
-Fri Apr  8 01:55:20 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/demos-{en,jp}/goldberg.rb: reduced window size.
-	  [ruby-dev:25992]
-
-Thu Apr  7 23:58:40 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): keep directory names in Makefile as macros.
-
-	* lib/mkmf.rb (configuration, create_makefile): ditto.
-
-	* lib/mkmf.rb (CXX_EXT): separate C++ extensions.
-
-Thu Apr  7 17:24:17 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* eval.c (rb_call0): "return" event hook should be always executed
-	  if event_hooks is set.
-
-Thu Apr  7 14:33:09 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_maker_dc.rb (test_date): added a test for #date=
-	  and #dc_date=.
-
-Thu Apr  7 11:49:53 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/dublincore.rb: _really_ supported multiple Dublin
-	  Core items.
-
-	* test/rss/rss-assertions.rb (assert_multiple_dublin_core): added
-	  an assertion for testing multiple Dublin Core items.
-
-	* test/rss/test_maker_dc.rb (test_rss10_multiple): added a test
-	  for making multiple Dublin Core items.
-
-Wed Apr  6 16:06:30 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_env.rb (test_key): should test ENV.key instead of
-	  ENV.index. [ruby-dev:25994]
-
-Tue Apr  5 16:01:12 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/*: refactored.
-	  - gave a name to 'x'.
-	  - undef_method -> remove_method for avoiding a warning in ruby 1.6.
-
-Tue Apr  5 15:45:33 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/tdiary_plugin/rss-recent.rb:
-	  new option: @options['rss-recent.use-image-link']:
-	  use image as link instread of text if available.
-
-	* sample/rss/tdiary_plugin/rss-recent.rb (RSS_RECENT_VERSION):
-	  0.0.5 -> 0.0.6.
-
-Tue Apr  5 15:15:26 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/dublincore.rb: supported multiple Dublin Core items.
-
-	* lib/rss/parser.rb: added class name registry for complex model
-	  elements. (ex. have childlen elements, have some attributes and
-	  a child element and so on.)
-
-	* lib/rss/maker/base.rb: added default current_element implementation.
-
-	* lib/rss/maker/dublincore.rb: supported multiple Dublin Core
-	  items.
-
-	* lib/rss/maker/image.rb: supproted new Dublin Core API.
-
-
-	* lib/rss/trackback.rb (RSS::TrackBackUtils.new_with_value_if_need):
-	  moved to RSS::Utils.
-
-	* lib/rss/utils.rb (RSS::Utils.new_with_value_if_need):
-	  moved from RSS::TrackBackUtils.
-
-
-	* lib/rss/maker/image.rb: fixed invalid argument of
-	  add_need_initialize_variable bug.
-
-	* lib/rss/maker/trackback.rb: ditto.
-
-
-	* lib/rss/rss.rb (Hash#merge): added for ruby 1.6.
-
-	* lib/rss/rss.rb (RSS::BaseModel.date_writer): changed to accept nil
-	  for date value.
-
-
-	* test/test_dublincore.rb: added tests for plural accessor and
-	  multiple Dublin Core items.
-
-	* test/test_setup_maker_1.0.rb: fixed swapped actual and expected
-	  values.
-
-Mon Apr  4 23:17:52 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb (TkComm#array2tk_list): accept enc-mode argument to
-	  decide whether convert encoding of each element or not.
-
-	* ext/tk/lib/tk/variable.rb (TkVariable#value=): fail to convert the
-	  encoding of array elements when assign an array to an TkVariable
-	  object.
-
-Mon Apr  4 10:26:48 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/lib/tk/dialog.rb: fixed typo.
-
-Sat Apr  2 23:38:54 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CP, INSTALL): get rid of less portable options.
-
-	* lib/mkmf.rb (configuration, create_makefile): correct configuration
-	  variable.
-
-	* wince/configure.bat, wince/setup.mak: add prefix, extstatic and
-	  rdoc options.
-
-	* lib/mkmf.rb (create_makefile): ensure library directories get made
-	  before copying libraries there.
-
-Sat Apr  2 16:59:46 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: forgot to update RELEASE_DATE
-
-	* ext/tk/lib/tk/variable.rb: fix namespace trouble when autoloading
-
-	* ext/tk/lib/tk/palette.rb: define Tcl variable 'tkPalette' as global
-
-	* ext/tk/lib/tk/dialog.rb: use array2tk_list method when calling
-	  Tk.ip_eval.
-
-	* ext/tk/lib/tk/autoload.rb: add autoload entry 'TkDialogObj' and
-	  'TkWarningObj'
-
-Sat Apr  2 13:23:17 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* hash.c (env_key): ENV.index is deprecated as well as Hash#index.
-	  use ENV.key instead. [ruby-dev:25974]
-
-Sat Apr  2 02:19:11 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb (TkWindow.initialize): accept 'without_creating'
-	  option without 'widgetname' option to allow creating a widget object
-	  which is used as an argument of Tcl/Tk's widget allocation commands.
-
-	* ext/tk/lib/tk/image.rb (TkImage.initialize): accept 'imagename'
-	  option to create a image object by the given name.
-
-Thu Mar 31 22:23:51 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (SRC_EXT): exclude just case different suffixes on case
-	  insensitive file system platforms.
-
-	* README.EXT, README.EXT.ja (Appendix C): utility functions.
-
-Thu Mar 31 14:08:43 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_engine.c (ossl_engine_s_load): should return
-	  value. [ruby-dev:25971]
-
-Thu Mar 31 11:07:50 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb: @@setter -> @@setters.
-
-	* lib/rss/parser.rb
-	  (RSS::BaseListener.register_uri)
-	  (RSS::BaseListener.uri_registered?)
-	  (RSS::BaseListener.install_get_text_element):
-	  swapped the first argument and the second argument.
-
-	* lib/rss/taxonomy.rb: swapped the first argument and the second
-	  argument for RSS::BaseListener.install_get_text_element.
-	* lib/rss/image.rb: ditto.
-	* lib/rss/syndication.rb: ditto.
-	* lib/rss/dublincore.rb: ditto.
-	* lib/rss/parser.rb: ditto.
-	* lib/rss/1.0.rb: ditto.
-	* lib/rss/2.0.rb: ditto.
-	* lib/rss/0.9.rb: ditto.
-	* lib/rss/content.rb: ditto.
-
-Thu Mar 31 11:00:36 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb
-	  (RSS::BaseListener.install_setter)
-	  (RSS::BaseListener.register_uri): changed fallback way.
-
-Thu Mar 31 08:25:40 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RUBYOPT): clear for the environment RubyGems installed.
-
-	* common.mk (clean-local): keep $(PREP) files till distclean.
-
-	* common.mk (check): do all tests.
-
-Thu Mar 31 06:00:20 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_engine.c (ossl_engine_s_load): should not raise
-	  error even if the specified engine could not be loaded. (Dynamic
-	  engines don't have fixed name to load.)
-
-Wed Mar 30 17:41:48 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: add TclTkIp#_create_console() method to create
-	  a Tcl/Tk's console window.
-
-	* ext/tk/lib/multi-tk.rb: support TclTkIp#_create_console() method.
-
-	* ext/tk/lib/remote-tk.rb: ditto.
-
-	* ext/tk/lib/tk/console.rb: ditto.
-
-	* ext/tk/lib/tk.rb: update RELEASE_DATE
-
-	* ext/tk/sample/demo-*/check2.rb: use 'return' in the Proc object.
-
-	* ext/tk/sample/tkextlib/**: ditto.
-
-Tue Mar 29 22:20:49 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb: use DRbObject.new_with instead of reinit.
-	  [ruby-dev:25961]
-
-Tue Mar 29 00:04:57 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: move method DRbObject#reinit to DRbObject.new_with.
-	  extract method DRbObject.prepare_backtrace. add DRb.regist_server,
-	  remove_server, fetch_server. change server in thread variable if
-	  in-proc server. [druby-ja:113]
-
-	* lib/drb/gw.rb: ditto.
-
-Mon Mar 28 20:53:44 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extract_makefile): nothing to be removed when no file
-	  was deleted.
-
-	* ext/extmk.rb (extmake): restore srcdir.
-
-Mon Mar 28 08:39:49 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): Iconv::Failure requires 3
-	  arguments.  (pointed out by NaHi)
-
-Sun Mar 27 00:56:58 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (remove_file): ignore Errno::E* if force option
-	  is set. [ruby-dev:25944]
-
-Sat Mar 26 22:51:33 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb (_callback_entry_class?): add for checking whether
-	  a class is available for a callback entry.
-
-	* ext/tk/lib/tk.rb (after_cancel): add Tk.after_cancel(afterID) method.
-
-	* ext/tk/lib/tk.rb (array2tk_list): change from private module method
-	  of TkComm to public module method.
-
-	* ext/tk/lib/tk.rb (cget): add check that slot argument is not
-	  empty string.
-
-	* ext/tk/lib/tk.rb (configinfo): ditto.
-
-	* ext/tk/lib/tk/itemconfig.rb (itemcget): add check that slot argument
-	  is not empty string.
-
-	* ext/tk/lib/tk/itemconfig.rb (itemconfiginfo): ditto.
-
-	* ext/tk/lib/tk/entry.rb: add TkEntry#icursor and icursor= (alias of
-	  cursor and cursor= method).
-
-	* ext/tk/lib/tk/font.rb: improve font treatment when the font name is
-	  empty string.
-
-	* ext/tk/lib/tk/variable.rb: add :variable, :window and :procedure
-	  type.
-
-	* ext/tk/lib/tk/variable.rb: improve treatment of array-type
-	  tkvariable.
-
-	* ext/tk/lib/tkextlib/blt.rb: add commands for zooming.
-
-	* ext/tk/lib/tkextlib/blt/*: bug fix.
-
-	* ext/tk/lib/tkextlib/treectrl/tktreectrl.rb: bug fix and add methods
-	  to call TreeCtrl commands for bindings.
-
-	* ext/tk/sample/tkextlib/blt/*: new sample scripts.
-
-	* ext/tk/sample/tkextlib/treectrl/*: ditto.
-
-Fri Mar 25 10:53:16 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (WIN32_LEAN_AND_MEAN): removed because a lot of
-	  troubles.  [ruby-list:40721]
-
-Thu Mar 24 23:10:44 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (macro_defined?): try to compile for an old compiler
-	  which doesn't bail out at #error directive.  [ruby-dev:25818]
-
-	* lib/mkmf.rb (check_sizeof): refine logging messages.
-
-Wed Mar 23 19:08:10 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/utils.rb (WEBrick::Utils.create_listeners):
-	  - should raise ArgumentError if no port is specified.
-	  - even if the specified port is 0, all TCPServers should be
-	    initialized with the port given to the first one.
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#initialize): if :Port
-	  parameter is 0, it should be updated with the port number which
-	  ectually listened.
-
-Wed Mar 23 16:12:40 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* parse.y (primary): fix lineno of rescue and ensure.
-
-Wed Mar 23 00:39:05 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/ruby/test_settracefunc.rb (test_event): added tests for
-	  "class" and "end" and "raise".
-
-Sun Mar 20 22:51:19 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (mkmf_failed): check if Makefile is created without
-	  create_makefile.
-
-Sat Mar 19 23:48:10 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-expr-beg): returned true always.
-	  fixed: [ruby-list:40683]
-
-Sat Mar 19 00:41:02 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/font.rb: add some TkFont class methods to get font
-	  information without creating a TkFont object.
-
-	* ext/tk/lib/tkextlib/treectrl/tktreectrl.rb: bug fix and define some
-	  classes for components of Tk::TreeCtrl
-
-Thu Mar 17 17:42:13 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (make_struct): allow non local-id field
-	  names. [ruby-core:04575]
-
-	* struct.c (inspect_struct): ditto.
-
-Wed Mar 16 23:39:13 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/ruby/test_settracefunc.rb: added test for c-return.
-
-Wed Mar 16 22:57:43 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* eval.c (rb_call0): call_cfunc() should be protected.
-
-	* eval.c (rb_add_event_hook): use K&R style.
-
-	* eval.c (rb_remove_event_hook): ditto.
-
-Wed Mar 16 22:03:15 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* eval.c (rb_add_event_hook): new function to add a hook function for
-	  interpreter events.
-
-Wed Mar 16 18:08:32 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): reorganize "return" event post.
-
-	* eval.c (return_jump): no need to post "return" event here.
-
-Tue Mar 15 23:49:19 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (Init_iconv): InvalidEncoding also should include
-	  Iconv::Failure.
-
-Tue Mar 15 23:12:36 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (recursive_check, recursive_push): more restrictive check.
-	  fixed: [ruby-dev:25916]
-
-Tue Mar 15 16:38:31 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tkutil/tkutil.c (ary2list): give wrong arguments to hash2kv()
-
-Mon Mar 14 19:39:33 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/timer.rb (TkTimer): forgot to clear @return_value
-	  when restarting
-
-	* ext/tk/lib/tk/sample/cd_timer.rb: new sample of TkRTTimer
-
-Mon Mar 14 12:21:03 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/timer.rb (TkRTTimer): forgot to reset the callback
-	  time. So, 'continue' do all callbacks between 'stop' and 'continue'.
-
-Mon Mar 14 08:14:56 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (str_to_id): raise ArgumentError for NUL containing
-	  strings.
-
-Mon Mar 14 00:13:49 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/timer.rb (TkRTTimer): correct calculation of offset
-	  value. get a little better accuracy.
-
-	* ext/tk/sample/demos-en/widget: use a binding with no local variables
-	  when eval a sample script.
-
-	* ext/tk/sample/demos-en/bind.rb: ditto.
-
-	* ext/tk/sample/demos-en/tcolor: ditto.
-
-	* ext/tk/sample/demos-jp/widget: ditto.
-
-	* ext/tk/sample/demos-jp/bind.rb: ditto.
-
-	* ext/tk/sample/demos-jp/tcolor: ditto.
-
-Sun Mar 13 22:19:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (recursive_pop): raise TypeError instead of fatal error.
-	  fixed: [ruby-dev:25843]
-
-Sun Mar 13 10:09:17 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb: remove test_gc. [ruby-dev:25871]
-
-Sun Mar 13 02:32:54 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_tmp_dh_callback): should get DH
-	  parameter from the current SSL object.
-
-Sun Mar 13 02:09:03 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_pkey_dh.c (ossl_create_dh): fix typo.
-	  patch from IWATSUKI Hiroyuki. [ruby-dev:25867]
-
-	* ext/openssl/ossl_ssl.c (ossl_tmp_dh_callback): ditto.
-	  (ossl_call_tmp_dh_callback): ditto
-
-Fri Mar 11 03:24:59 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): wrong var node was set for NODE_LAMBDA.
-	  [ruby-core:04555]
-
-Thu Mar 10 19:10:29 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (lib_eventloop_ensure): mis-delete a timer handler
-	  when exit from a recursive called eventloop
-
-	* ext/tk/lib/tk/timer.rb: new TkRTTimer class, which can works for a
-	  realtime operation
-
-	* ext/tk/sample/tkrttimer.rb: sample of TkRTTimer class
-
-	* ext/tk/lib/tk/textmark.rb: move  TkTextMark#+ and TkTextMark#- to
-	  TkText::IndexModMethods
-
-	* ext/tk/lib/tk/text.rb: improve TkTextMark#+ and TkTextMark#-, and
-	  add them to TkText::IndexModMethods module
-
-	* ext/tk/sample/tktextio.rb: add test part of "seek by text index
-	  modifiers"
-
-Thu Mar 10 08:10:11 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (make_regexp): need to free internal regexp structure when
-	  compilation fails.  [ruby-talk:133228]
-
-Thu Mar 10 01:08:20 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (bv_decl): remove initialize rule from block local
-	  variable declaration.
-
-Wed Mar  9 23:55:34 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (PP::PPMethods#guard_inspect_key): support
-	  __recursive_key__.  [ruby-dev:25821]
-
-Wed Mar  9 19:42:21 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c: OpenSSL::SSL::SSLContexts suports callbacks:
-	  - SSLContext#client_cert_cb is a Proc. it is called when a client
-	    certificate is requested by a server and no certificate was yet
-	    set for the SSLContext. it must return an Array which includes
-	    OpenSSL::X509::Certificate and OpenSSL::PKey::RSA/DSA objects.
-	  - SSLContext#tmp_dh_callback is called in key exchange with DH
-	    algorithm. it must return an OpenSSL::PKey::DH object.
-
-	* ext/openssl/ossl_ssl.c:
-	  (ossl_sslctx_set_ciphers): ignore the argument if it's nil.
-	  (ossl_start_ssl, ossl_ssl_write): call rb_sys_fail if errno isn't 0.
-	  [ruby-dev:25831]
-
-	* ext/openssl/ossl_pkey.c
-	  (GetPrivPKeyPtr, ossl_pkey_sign): should call rb_funcall first.
-	  (DupPrivPKeyPtr): new function.
-
-	* ext/openssl/ossl_pkey_dh.c: add default DH parameters.
-
-	* ext/openssl/ossl_pkey.h: ditto.
-
-	* ext/openssl/lib/openssl/cipher.rb: fix typo. [ruby-dev:24285]
-
-Wed Mar  9 18:09:51 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (gettable_gen): warns if VCALL name is used as
-	  out-of-scope block local variable.  [EXPERIMENTAL]
-
-	* parse.y (opt_bv_decl): add explicit block local variable
-	  declaration.  raises error for name conflicts.  [EXPERIMENTAL]
-
-Wed Mar  9 13:37:57 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tktextio.rb: fix bug of handling 'end' position.
-	  support initial text, overwrite setting and pos_gravity control.
-
-Tue Mar  8 18:16:55 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tktextio.rb: New sample script. TkTextIO class in this
-	  sample supports to use a text widget as if it is a I/O stream (such
-	  like as StringIO class).
-
-Tue Mar  8 13:39:25 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: workaround for some of 4.4BSD-Lite
-	  derived OSs.
-
-Tue Mar  8 12:36:17 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: document from Sam Roberts
-	  <sroberts@uniserve.com> for getsockopt and setsockopt is merged.
-	  [ruby-doc:824]
-
-Tue Mar  8 10:48:53 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (rb_exec_recursive): declaration should precede statements
-	  before C99.
-
-Tue Mar  8 10:05:40 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (errno_missing): Errno.const_missing to allow references
-	  to SyscallError exceptions not defined on the platform.
-	  [ruby-core:04522]
-
-	* error.c (Init_syserr): Errno::NOERROR(0) for fallback exception.
-
-Tue Mar  8 01:19:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: follow nkf 1.66
-	  fixed: [ruby-dev:25828]
-
-Mon Mar  7 21:29:40 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#start): should
-	  restore @token if accept failure. suggested by Dominique Brezinski.
-	  [ruby-core:04518]
-
-	* sample/webrick/httpsd.rb: fix typo in comment. suggested by
-	  Kazuhiko Shiozaki.
-
-Mon Mar  7 21:01:37 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_require_safe): get actual path string under safe level
-	  when requested.  fixed: [ruby-dev:25815]
-
-Mon Mar  7 16:46:02 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_start_ssl, ossl_ssl_read,
-	  ossl_ssl_write): need to set errno on Win32 platform.
-
-Mon Mar  7 14:55:43 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): should not push unique number if a block is
-	  not an orphan.  [ruby-dev:25808]
-
-Mon Mar  7 14:13:23 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#initialize):
-	  should set @eof and @rbuffer.
-
-Mon Mar  7 10:28:00 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (inspect_obj): unintended space removal.
-	  [ruby-dev:25810]
-
-	* eval.c (rb_exec_recursive): should not use NODE in disclosed
-	  context.  [ruby-dev:25812]
-
-	* io.c (rb_f_open): need not to check if to_open value is a
-	  T_FILE.  [ruby-dev:25812]
-
-Mon Mar  7 01:21:01 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tkutil/tkutil.c: follow the change of st.c (committed
-	  at Fri, 4 Mar 2005 15:47:47 +0900 by matz)
-
-Mon Mar  7 00:01:55 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: fail to call TclTkLib.mainloop when $SAFE==4
-
-Sun Mar  6 13:04:10 2005  Dee Zsombor  <zsombor@ruby-lang.org>
-
-	* misc/ruby-electric.el: added.
-	* misc/Readme: updated.
-
-Sun Mar  6 11:47:10 2005  Sam Roberts  <sroberts@uniserve.com>
-
-	* lib/pp.rb: rdoced.  [ruby-core:4490]
-
-Sun Mar  6 11:36:37 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (File::Stat#pretty_print): Etc.getpwuid and Etc.getgrgid
-	  may return nil.  [ruby-talk:129826]
-	  reported by Daniel Berger.
-
-Sun Mar  6 06:34:31 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_start_ssl): should wait for that
-	  the underlying IO become readable or writable if the error was
-	  SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE. [ruby-dev:25795]
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read, ossl_ssl_write): ditto.
-
-	* ext/openssl/lib/openssl/buffering.rb
-	  (Buffering#consume_rbuf): pointless eof flag resetting is deleted.
-	  (Buffering#read): should return an empty string if the specified
-	  size is zero.
-	  (Buffering#readpartial): new method.
-	  (Buffering#readline): fix typo.
-	  (Buffering#getc): return the first character of string correctly.
-	  (Buffering#readchar): fix typo.
-	  (Buffering#eof?): should read again it the input buffer is empty.
-	  (Buffering#do_write): should rescue Errno::EAGAIN.
-	  (Buffering#puts): use "\n" as the output field separator.
-
-	* ext/openssl/extconf.rb: get rid of GNUmakefile generation.
-
-	* text/openssl/test_pair.rb: test for IO like methods.
-
-	* test/ruby/ut_eof.rb: test about empty file.
-
-Sat Mar  5 17:48:31 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (rb_glob): fixed mismatch of argument.
-
-	* dir.c (fnmatch): removed unnecessary code. (by string.c 1.219)
-
-	* win32/win32.c (NtInitialize): ditto. (by numeric.c 1.117)
-
-Sat Mar  5 16:50:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: follow nkf 1.65
-
-Sat Mar  5 16:29:26 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: freeze callback-entry objects
-
-	* ext/tk/lib/tkextlib/tile.rb: support tile-0.6
-
-Sat Mar  5 12:52:08 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): allow putting spaces between target
-	  and colon in depend file.
-
-Sat Mar  5 02:41:00 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (eaccess): workaround for VC++8 runtime.
-
-	* win32/win32.c (ioinfo): VC++8 support.
-
-Fri Mar  4 19:39:55 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser#do_includes): replace
-	  also locally defined modules.
-
-	* ext/iconv/iconv.c: rdocified.
-
-	* ext/strscan/strscan.c: moved misplaced rdoc.
-
-Fri Mar  4 16:11:20 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (rb_exec_recursive): matched the declaration to prototype.
-
-	* ext/curses/curses.c: don't need to check HAVE_WCOLOR_SET excluding
-	  window_color_set().
-
-	* ext/tk/tcltklib.c: fixed commit mistakes.
-
-Fri Mar  4 12:45:17 2005  Tilman Sauerbeck  <tilman@code-monkey.de>
-
-	* lib/rdoc/parsers/parse_c.rb: allow whitespace after function names.
-	  [ruby-core:4296]
-
-	* lib/rdoc/parsers/parse_simple.rb: adds support for private comments
-	  in the "simple" parser. [ruby-core:4301]
-
-Fri Mar  4 12:45:17 2005  Charles Mills  <cmills@freeshell.org>
-
-	* lib/rdoc/parsers/parse_c.rb: adds support for constants
-	  (rb_define_const), accessors (rb_define_attr), and makes a
-	  couple fixes. [ruby-core:4307]
-
-Fri Mar  4 12:45:17 2005  Florian Gross  <florgro@gmail.com>
-
-	* lib/rdoc/parsers/parse_rb.rb: Logic for def Builtin.method() end
-	  [ruby-core:4302]
-
-Fri Mar  4 12:45:17 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c: replace rb_protect_inspect() and rb_inspecting_p() by
-	  rb_exec_recursive() in eval.c.
-
-	* eval.c (rb_exec_recursive): new function.
-
-	* array.c (rb_ary_join): use rb_exec_recursive().
-
-	* array.c (rb_ary_inspect, rb_ary_hash): ditto.
-
-	* file.c (rb_file_join): ditto.
-
-	* hash.c (rb_hash_inspect, rb_hash_to_s, rb_hash_hash): ditto.
-
-	* io.c (rb_io_puts): ditto.
-
-	* object.c (rb_obj_inspect): ditto
-
-	* struct.c (rb_struct_inspect): ditto.
-
-Fri Mar  4 10:15:30 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/set.rb (SortedSet::setup): a hack to shut up warning.
-	  [ruby-talk:132866]
-
-Fri Mar  4 09:37:12 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (install-nodoc, pre-install-doc, post-install-doc):
-	  fix some omissions.
-
-Fri Mar  4 08:09:12 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/time.rb (Time::strptime): add new function.  inspired by
-	  [ruby-talk:132815].
-
-	* lib/parsedate.rb (ParseDate::strptime): ditto.
-
-Fri Mar  4 07:07:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: follow nkf 1.63
-
-Thu Mar  3 23:24:00 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: follow nkf 1.62
-
-Thu Mar  3 18:47:18 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc32,win32,wince}/Makefile.sub (config.h): check if affected
-	  when makefiles are modified.
-
-	* {bcc32,win32,wince}/Makefile.sub (config.status): add variables
-	  for tests.
-
-	* win32/ifchange.bat: try to update a file only if modified.
-
-	* win32/resource.rb: more descriptions.
-
-	* common.mk: add {pre,post}-install targets.
-
-	* instruby.rb (install?): install particular part.
-
-	* bcc32/Makefile.sub (post-install-ext): remove debug information
-	  files after installation.
-
-	* ext/tk/tcltklib.c (ip_rbUpdateCommand, ip_rb_threadUpdateCommand):
-	  get rid of warnings with Tcl/Tk 8.3 or former.
-
-Thu Mar  3 11:49:51 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/tdiary_plugin/rss-recent.rb: added site information.
-
-Wed Mar  2 19:53:44 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (parse_args): return false if nothing matched.
-
-Wed Mar  2 17:15:08 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (lib_eventloop_core): fix typo
-
-Wed Mar  2 16:59:50 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* eval.c (ruby_native_thread_kill): call pthread_kill() to send a
-	  signal to ruby's native thread
-
-	* ruby.h: add definition of ruby_native_thread_kill()
-
-	* signal.c (sigsend_to_ruby_thread): send the signal to ruby's
-	  native thread ([ruby-dev:25744], [ruby-dev:25754]), and set
-	  signal mask to the current native thread
-
-Wed Mar  2 16:03:08 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: enforce thread-check and exception-handling to
-	  avoid SEGV trouble.
-
-	* ext/tk/tkutil/tkutil.c; fix a bug on converting a SJIS string array
-	  to a Tcl's list string.
-
-	* ext/tk/tcltklib.c: wrap Tcl's original "namespace" command to
-	  protect from namespace crash.
-
-	* ext/tk/lib/multi-tk.rb: enforce exception-handling.
-
-	* ext/tk/lib/multi-tk.rb: catch IRB_EXIT to work on irb.
-
-	* ext/tk/lib/tk.rb: ditto.
-
-	* ext/tk/tcltklib.c: add TclTkLib.mainloop_thread?
-
-	* ext/tk/lib/multi-tk.rb: (bug fix) callback returns a value.
-
-	* ext/tk/lib/tk/canvas.rb (delete): bug fix when multiple arguments.
-
-	* ext/tk/lib/clock.rb: fix 'no method error'.
-
-	* ext/tk/lib/clock.rb (self.clicks): accept a Symbol argument.
-
-	* ext/tk/lib/variable.rb: be able to set default_value_type; :numeric,
-	  :bool, :string, :symbol, :list, :numlist or nil (default; same to
-	  :string). If set a type, TkVariable#value returns a value of the
-	  type.
-
-	* ext/tk/lib/tkextlib/tclx/tclx.rb: add Tk::TclX.signal to warn the
-	  risk of using TclX extension's 'signal' command.
-
-	* ext/tk/sample/irbtk.rb: irb with Ruby/Tk.
-
-	* ext/tk/sample/demos-*/anilabel.rb: bug fix on 'show code'
-
-	* ext/tk/sample/demos-*/aniwave.rb: new Ruby/Tk animation demo.
-
-	* ext/tk/sample/demos-*/pendulum.rb: ditto.
-
-	* ext/tk/sample/demos-*/goldberg.rb: ditto.
-
-	* ext/tk/sample/demos-*/widget: add entries of animation demos.
-
-Wed Mar  2 12:21:18 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): [EXPERIMENTAL] NODE_LAMBDA implemented.
-	  [ruby-dev:25780]
-
-	* node.h (NODE_LAMBDA): for literal Proc object.
-
-	* parse.y (expr): interpret mere do...end block as proc object.
-
-	* parse.y (primary): ditto, for brace block.
-
-Tue Mar  1 21:16:54 2005  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* regcomp.c (optimize_node_left): uninitialized member
-	  (OptEnv.backrefed_status) was used. [ruby-dev:25778]
-
-Tue Mar  1 16:50:37 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regparse.c: move st_*_strend() functions from st.c.  fixed some
-	  potential memory leaks.
-
-Tue Mar  1 00:40:35 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/tuplespace.rb (Rinda::TupleSpace): improved keeper thread.
-
-	* test/rinda/test_rinda.rb: ditto.
-
-Mon Feb 28 23:10:13 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/socket/socket.c (Init_socket): IPv6 is not supported although
-	  AF_INET6 is defined on bcc32. (rev1.108 again)
-
-	* ext/socket/mkconstants.rb: ditto.
-
-Mon Feb 28 21:55:49 2005  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* ext/strscan/strscan.c (strscan_s_allocate):
-	  use onig_region_init().
-
-	* ext/strscan/strscan.c (adjust_registers_to_matched):
-	  use onig_region_set().
-
-Mon Feb 28 15:12:06 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/socket/socket.c (Init_socket): ported more Socket::Constants
-	  from ruby_1_8, and made it easy to add new constants.
-	  [ruby-dev:25771]
-
-	* ext/socket/depend: ditto.
-
-	* ext/socket/mkconstants.rb: ditto. (added)
-
-Mon Feb 28 11:42:23 2005  Ian Macdonald  <ian@caliban.org>
-
-	* exception error messages updated.  [ruby-core:04497]
-
-Mon Feb 28 09:03:09 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (Init_socket): add bunch of Socket
-	  constants.  Patch from Sam Roberts <sroberts@uniserve.com>.
-	  [ruby-core:04409]
-
-Sun Feb 27 05:55:38 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: fix typo. [ruby-core:04494]
-
-Sat Feb 26 16:58:20 2005  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* parse.y, re.c, regex.h, LEGAL, ext/strscan/strscan.c:
-	  remove oniggnu.h (GNU regex API).
-
-Wed Feb 23 22:08:16 2005  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* st.c, st.h: imported additional file changes on
-	  Oniguruma 3.7.0.
-
-Wed Feb 23 21:45:29 2005  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* ascii.c, euc_jp.c, oniggnu.h, oniguruma.h, regcomp.c,
-	  regenc.c, regenc.h, regerror.c, regexec.c, regint.h,
-	  regparse.c, regparse.h, sjis.c, utf8.c: imported Oni Guruma
-	  3.7.0.
-
-Wed Feb 23 15:04:32 2005  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/generic.rb (split_userinfo): should split ":pass" into ""
-	  and "pass".  [ruby-dev:25667]
-
-Wed Feb 23 08:00:18 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_s_create): no need for negative argc check.
-	  [ruby-core:04463]
-
-	* array.c (rb_ary_unshift_m): ditto.
-
-Wed Feb 23 01:53:29 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (initialize): handle certs correctly. Thanks,
-	  NABEYA Kenichi.
-
-Wed Feb 23 00:37:34 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/mkmf.rb (mkmf_failed): fixed typo.
-
-Tue Feb 22 23:52:45 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, lib/mkmf.rb: use simple commands if available.
-
-	* mkconfig.rb: remove autoconf internal variables from rbconfig.rb.
-
-	* lib/mkmf.rb (create_makefile): substitute implicit rules in depend
-	  file.
-
-	* {bcc32,win32,wince}/Makefile.sub (COMPILE_RULES, RULE_SUBST):
-	  include $(topdir) and $(hdrdir) to search path.
-
-Tue Feb 22 23:51:45 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/rubyext.c: get rid of warnings caused by a bug of VC.
-
-Tue Feb 22 23:50:26 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (ruby_signal, ruby_nativethread_signal): must be valid as
-	  expressions, not only statements.
-
-Tue Feb 22 12:54:13 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): update curr_thread before raising
-	  TAG_THREAD.  [ruby-dev:25712]
-
-Tue Feb 22 07:24:57 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): identifier after dot must not be a variable.
-
-Mon Feb 21 18:31:12 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* signal.c: Standard signal handlers ignore signals on non-Ruby native
-	  threads. When a handler is entried with ruby_signal() (like as the
-	  standard signal handlers), the handler for the signal is marked as
-	  it cannot accept non-Ruby native threads. If a handler can treat all
-	  signals on all native threads, please use ruby_nativethread_signal()
-	  to entry it.
-
-Sun Feb 20 00:48:48 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::FTP#buffer_open): access mechanism
-	  re-implemented according to RFC 1738.
-	  reported by Guillaume Marcais.  [ruby-talk:131650]
-
-Sat Feb 19 18:46:56 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (DRbObject#respond_to?): take two arguments.
-	  [ruby-dev:25722]
-
-	* test/drb/drbtest.rb: ditto.
-
-Sat Feb 19 13:52:02 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: call OpenSSL::SSL::SSLSocket#post_connection_check
-	  after connection is made.
-
-Sat Feb 19 13:31:28 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extract_makefile): remove no longer existing installed
-	  files.
-
-	* lib/mkmf.rb (install_dirs): return installation directory list.
-
-	* lib/mkmf.rb (create_makefile): reverted wrongly removed lines.
-
-Sat Feb 19 01:28:56 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/bigdecimal/lib/bigdecimal/newton.rb: resolved LoadError.
-	  [ruby-dev:25685]
-
-	* ext/bigdecimal/sample/linear.rb: ditto.
-
-	* ext/bigdecimal/sample/nlsolve.rb: ditto.
-
-	* ext/bigdecimal/lib/bigdecimal/nlsolve.rb: removed because this file
-	  is sample script and same file exists in ext/bigdecimal/sample.
-
-Fri Feb 18 17:14:00 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/xmlrpc/parser.rb (XMLRPC::FaultException): make it subclass
-	  of StandardError class, not Exception class.  [ruby-core:04429]
-
-Fri Feb 18 04:06:41 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (fcall_gen): lvar(arg) will be evaluated as
-	  lvar.call(arg) when lvar is a defined local variable. [new]
-
-Thu Feb 17 22:15:34 2005  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* ext/strscan/strscan.c: calls Oniguruma API directly.
-
-Thu Feb 17 21:53:12 2005  K.Kosako  <sndgk393 AT ybb.ne.jp>
-
-	* common.mk, LEGAL: remove reggnu.c.
-
-Thu Feb 17 21:53:12 2005  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* gc.c, re.c: now ruby calls Oniguruma API directly, bypassing
-	  GNU compatible APIs.
-
-Thu Feb 17 20:09:23 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/drb/drb.rb (DRbServer.default_safe_level): fix typo.
-
-Thu Feb 17 20:09:23 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/digest/test_digest.rb: separate test case for each algorithms.
-	  [ruby-dev:25412]
-
-Thu Feb 17 14:31:52 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_class_initialize): call inherited method before
-	  calling initializing block.
-
-	* eval.c (rb_thread_start_1): initialize newly pushed frame.
-	  fixed: [ruby-dev:25707]
-
-Thu Feb 17 13:46:00 2005  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/collector.rb (collect_file): now deletes paths added
-	  to $LOAD_PATH instead of restoring it verbatim.
-
-	* lib/test/unit/autorunner.rb (AutoRunner.run): fixed so that
-	  'ruby -rtest/unit -rtest1 -rtest2 -e0' will use the objectspace
-	  collector again. Also tried to simplify the calling convention.
-
-	* test/runner.rb: adjusted for new AutoRunner semantics.
-
-	* lib/test/unit.rb: ditto.
-
-Thu Feb 17 04:21:47 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/open3.rb (Open3::popen3): $? should not be EXIT_FAILURE.
-	  fixed: [ruby-core:04444]
-
-Thu Feb 17 00:31:21 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/test_drb.rb, ut_safe1.rb: port from 1.8
-
-Thu Feb 17 00:02:27 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): NODE_IASGN is an assignment.
-
-Wed Feb 16 23:54:14 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_start_1): outer block variables wasn't linked to
-	  threads.  fixed: [ruby-dev:25700]
-
-Wed Feb 16 15:11:43 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::Nonblock#initialize):
-	  native win32 platform doesn't have F_GETFL.
-
-Wed Feb 16 02:47:45 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read, ossl_ssl_write): should
-	  call rb_sys_fail instead of raising SSLError if SSL_ERROR_SYSCALL
-	  occurred.
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#fill_rbuff):
-	  should rescue Errno::EAGAIN.
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#each): fix typo.
-	  suggested by Brian Ollenberger.
-
-	* ext/openssl/lib/openssl/ssl.rb: set non-blocking flag to the
-	  underlying IO.
-
-Tue Feb 15 22:14:34 2005  sheepman  <sheepman@tcn.zaq.ne.jp>
-
-	* ext/readline/readline.c (Readline.readline): use rl_outstream
-	  and rl_instream.  [ruby-dev:25699]
-
-Mon Feb 14 23:58:17 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb (RSS::ListenerMixin::tag_end):
-	  fixed invalid namespace handling bug.
-
-Mon Feb 14 13:12:38 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb
-	  (OpenSSL::SSL::SSLSocket#post_connection_check): new method.
-
-Mon Feb 14 00:10:17 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (DRbServer): add default_safe_level, safe_level,
-	  config[:safe_level] ([druby-ja:120])
-
-	* test/drb/test_drb.rb, ut_eval.rb, ut_safe1.rb: ditto.
-
-Sun Feb 13 23:13:46 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/dublincore.rb (RSS::DublicCoreModel#date{,=}): added
-	  convenient methods.
-
-	* lib/rss/0.9.rb (RSS::Rss::Channel#date{,=}): ditto.
-
-	* lib/rss/2.0.rb (RSS::Rss::Channel::Item#date{,=}): ditto.
-
-	* test/rss/: added tests for the convenient methods.
-
-Sun Feb 13 23:12:47 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): restore prot_tag before rewinding.
-
-Sun Feb 13 16:56:52 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI.start): should set reason-phrase
-	  to the value of status header field. ([ruby-dev:40617])
-
-Sun Feb 13 11:38:40 2005  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regparse.c (type_cclass_hash): (Thanks Nobu) fixed
-	  overrun. ([ruby-dev:25676]).
-
-Sun Feb 13 10:53:08 2005  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* oniggnu.h, oniguruma.h, regcomp.c, st.c: imported
-	  Oni Guruma 3.6.0.
-
-Sun Feb 13 01:33:19 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb (ERB::Util.h, u): make it module_function.
-
-Sat Feb 12 22:17:11 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (TAG_THREAD): to start a new thread.
-
-	* eval.c (ruby_init, ruby_options, ruby_cleanup, rb_protect,
-	  rb_load_protect, rb_thread_start_0): make thread anchor.
-
-	* eval.c (proc_alloc): clone proc object if klass is not Proc or
-	  created in different thread.
-
-	* eval.c (rb_block_pass): call a function with a block.  [new]
-
-	* eval.c (rb_f_throw): raise NameError in main thread.
-
-Sat Feb 12 17:29:19 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI.open_loop): send authentication only for
-	  the URI directly specified.
-
-Sat Feb 12 15:07:23 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rand_init): suppress warning.
-
-Sat Feb 12 14:10:24 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI.open_http): reject userinfo explicitly.
-
-Sat Feb 12 13:54:03 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: support https if the platform provides CA
-	  certificates.
-
-Sat Feb 12 06:18:28 2005  URABE Shyouhei  <shyouhei@ice.uec.ac.jp>
-
-	* ext/etc/etc.c (Init_etc): sGroup needs HAVE_ST_GR_PASSWD check
-	  [ruby-dev:25675]
-
-Fri Feb 11 17:37:50 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509store.c (ossl_x509store_set_default_paths):
-	  new method OpenSSL::X509::Store#set_default_paths.
-
-Fri Feb 11 11:33:53 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::HTTP#proxy_open): new option supported:
-	  :http_basic_authentication.
-	  suggested by Kent Sibilev.  [ruby-core:4392]
-
-Fri Feb 11 06:30:07 2005  George Ogata  <g_ogata@optushome.com.au>
-
-	* misc/ruby-mode.el: ignore parenthesis inside heredoc.
-	  [ruby-core:04415]
-
-Fri Feb 11 04:54:13 2005  Tilman Sauerbeck  <tilman@code-monkey.de>
-
-	* lib/rdoc/generators/html_generator.rb: [ruby-core:04412]
-
-	* lib/rdoc/generators/ri_generator.rb: ditto.
-
-Thu Feb 10 13:52:42 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (LIBS, COMMON_HEADERS): use
-	  winsock2 on mswin32/mingw.
-
-	* ext/socket/extconf.rb: ditto.
-
-	* win32/win32.c (StartSockets): ditto.
-
-	* win32/win32.h: ditto.
-
-Thu Feb 10 12:09:16 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extract_makefile): default to true if not compiled
-	  previously.
-
-	* ext/extmk.rb (extmake): create dummy makefile if extconf failed.
-
-Thu Feb 10 12:07:10 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (init_stdhandle): assign standard file handles.
-
-	* bcc32/Makefile.sub (COMMON_LIBS): add libraries included in
-	  import32.lib.
-
-	* lib/mkmf.rb (create_makefile): restrict prefixing with srcdir to
-	  rule lines, add search path to implicit rules, and set Borland make
-	  special macros for search path.
-
-	* win32/win32.c, win32/win32.h (read): avoid a BCC runtime bug.
-
-Thu Feb 10 00:47:25 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (make_struct): fixed: [ruby-core:04402]
-
-Wed Feb  9 16:33:05 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (wait_connectable): fixed wrong condition.
-
-Wed Feb  9 14:42:28 2005  URABE Shyouhei  <shyouhei@ice.uec.ac.jp>
-
-	* eval.c (scope_dup): add volatile not to optimize tbl.
-
-Wed Feb  9 10:02:02 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/tk/make-tkutil, ext/tk/tkutil/subconf.rb: no longer used.
-
-	* ext/tk/tkutil/extconf.rb: need to compile tkutil. [ruby-dev:25607]
-
-Wed Feb  9 08:07:08 2005  Paul Duncan  <pabs@pablotron.org>
-
-	* ext/curses/curses.c (window_color_set): [ruby-core:04393]
-
-Tue Feb  8 23:48:36 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: reject :instance_eval, :class_eval, :module_eval
-	  [druby-ja:117]
-
-Tue Feb  8 22:38:28 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* keywords, parse.y: separate EXPR_VALUE from EXPR_BEG.
-	  fixed: [ruby-core:04310], [ruby-core:04368]
-
-Tue Feb  8 13:06:12 2005  Sam Roberts  <sroberts@uniserve.com>
-
-	* ext/socket/socket.c (Init_socket): SO_REUSEPORT added.
-	  [ruby-talk:130092]
-
-Tue Feb  8 00:19:02 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Name#subdomain_of?): new method.
-	  (Resolv::DNS::Name#inspect): ditto.
-	  Suggested by Sam Roberts.  [ruby-talk:129086]
-
-Mon Feb  7 23:14:11 2005  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (io_getc): flush rb_stdout before read from stdin, which is
-	  connected to a tty.  [ruby-core:4378]
-
-	* rubyio.h (FMODE_TTY): renamed from FMODE_LINEBUF.
-
-Mon Feb  7 10:06:30 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c: [ruby-doc:818]
-
-Mon Feb  7 02:13:05 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb (sockaddr_storage): winsock2.h have the
-	  definition of struct sockaddr_storage, but socket.c doesn't
-	  include it because this version of ruby still has binary level
-	  compatibility with winsock1.
-
-Mon Feb  7 01:22:50 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extract_makefile): extract previously collected
-	  informations from existing Makefile.
-
-	* ext/socket/extconf.rb: check if getaddrinfo() works fine only when
-	  wide-getaddrinfo option is not given.  fixed: [ruby-dev:25422]
-
-	* ext/tk/extconf.rb: separate tkutil configuration.
-
-	* lib/mkmf.rb ($extmk): check if under ext directory.
-
-	* lib/mkmf.rb (Logging.postpone): allow recursive operation.
-
-	* lib/mkmf.rb (try_constant): make sure if really a constant, reduce
-	  the number of times of compile.
-
-	* lib/mkmf.rb (have_macro, have_var, byte_order): new functions.
-
-	* lib/mkmf.rb (find_library): allow directory list with separators.
-
-	* lib/mkmf.rb (arg_config): manage provided configuration options.
-
-	* lib/mkmf.rb (dir_config): accept arrays of directory names as
-	  default values.
-
-	* lib/mkmf.rb (with_cppflags, with_cflags, with_ldflags): keep flags
-	  modified if the block returned true.
-
-Sun Feb  6 19:20:05 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (stack_extend): add prototype because VC++8 doesn't
-	  accept __declspec(noinline) with K&R style function definitions.
-
-Sun Feb  6 13:56:19 2005  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (new_with_hash): changed messages of exception.
-
-	* lib/date/format.rb (str[fp]time): undocumented conversion
-	  specifications %[1-3] are now deprecated.
-
-Sun Feb  6 11:27:37 2005  Tanaka Akira  <akr@m17n.org>
-
-	* ext/dl/dl.c (Init_dl): function declaration should precede
-	  statements before C99.
-
-Sun Feb  6 03:24:20 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Resource::TXT): multiple strings was not
-	  handled.
-	  (Resolv::DNS::Resource::TXT#strings): new method to return all
-	  strings.
-	  (Resolv::DNS::Message::MessageEncoder#put_string_list): new method.
-	  (Resolv::DNS::Message::MessageDecoder#get_string_list): ditto.
-	  based on [ruby-talk:129732] by Sam Roberts.
-
-Sat Feb  5 02:24:06 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ripper/test_scanner_events.rb: fix test.
-
-Fri Feb  4 18:44:35 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/lib/ripper/lexer.rb: last Lexer fix was incomplete;
-	  test all green.
-
-Fri Feb  4 15:57:06 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (open_args): fix too verbose warnings for the space
-	  before argument parentheses.  [ruby-dev:25492]
-
-	* parse.y (parser_yylex): ditto.
-
-Fri Feb  4 14:33:25 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/lib/ripper/filter.rb: ripper/tokenizer ->
-	  ripper/lexer. [ruby-dev:25632]
-
-Fri Feb  4 00:24:15 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss: supported Image module.
-	  http://web.resource.org/rss/1.0/modules/image/
-
-Thu Feb  3 23:42:36 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_close, strio_close_read, strio_close_write):
-	  should return nil instead of self as well as IO.  [ruby-dev:25623]
-
-	* ext/stringio/stringio.c (strio_extend, strio_putc): fill with zero
-	  extended portion.  [ruby-dev:25626]
-
-Thu Feb  3 16:12:57 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): the first expression in the parentheses
-	  should not be a command.  [ruby-dev:25492]
-
-Thu Feb  3 03:31:20 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: follow original v 1.57
-
-	* ext/nkf/nkf-utf8/utf8tbl.c: follow original v 1.8
-
-	* ext/nkf/nkf-utf8/config.h: follow original v 1.7
-
-Wed Feb  2 23:52:53 2005  sheepman  <sheepman@tcn.zaq.ne.jp>
-
-	* ext/stringio/stringio.c (strio_truncate): should MEMZERO an extended
-	  part.  [ruby-dev:25618]
-
-Wed Feb  2 21:56:01 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::Element#convert): added.
-
-	* lib/rss/rss.rb: convert -> need_convert.
-
-	* lib/rss/1.0.rb: ditto.
-
-	* lib/rss/0.9.rb: ditto.
-
-	* lib/rss/2.0.rb: ditto.
-
-	* lib/rss/trackback.rb: ditto.
-
-Wed Feb  2 03:30:58 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/lib/ripper/tokenizer.rb -> lexer.rb.
-
-	* ext/ripper/lib/ripper/lexer.rb: new method Ripper.slice.
-	  [experimental]
-
-	* ext/ripper/lib/ripper/sexp.rb: new file. [experimental]
-
-	* ext/ripper/lib/ripper.rb: require ripper/lexer and ripper/sexp.
-
-Tue Feb  1 21:49:24 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (DRb::DRbObject#respond_to?): check marshal_dump and
-	  _dump.
-
-Tue Feb  1 00:20:23 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in: made EXTOUT configurable.
-
-	* ext/extmk.rb (extmake), lib/mkmf.rb: keep topdir as relative style.
-
-	* lib/mkmf.rb: make extensions in depth order.  [ruby-dev:25522]
-
-	* configure.in (aix): fix linker flags on AIX.  [ruby-talk:125460]
-
-Mon Jan 31 13:16:39 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: add tkutil configuration step (remove old schema)
-
-	* ext/tk/depend: remove the information of tkutil
-
-	* ext/tk/make-tkutil: sub-part of Makefile to compile tkutil
-
-	* ext/tk/tkutil/tkutil.c: move tkutil.c to subdirectory
-
-	* ext/tk/tkutil/subconf.rb: configuration file for tkutil.c
-
-	* ext/tk/tkutil/depend: ditto
-
-Mon Jan 31 13:13:35 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: add invalid namespace check
-
-	* ext/tk/lib/multi-tk.rb: add invalid_namespace? method
-
-	* ext/tk/lib/remote-tk.rb: ditto
-
-Mon Jan 31 10:29:18 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/context.rb (IRB::Context::initialize): [ruby-core:04330]
-
-Mon Jan 31 09:44:03 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): remove Object#type.  [ruby-core:04335]
-
-Sat Jan 29 09:42:12 2005  Sam Roberts  <sroberts@uniserve.com>
-
-	* lib/resolv.rb (Resolv::DNS::Resource::IN::SRV): Added RFC2782 SRV
-	  resource record for specifying location of services.
-
-Sat Jan 29 00:10:33 2005  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* ascii.c, euc_jp.c, hash.c, oniggnu.h, oniguruma.h, regcomp.c,
-	  regenc.c, regenc.h, regerror.c, regexec.c, reggnu.c, regint.h,
-	  regparse.c, regparse.h, sjis.c, st.c, st.h, utf8.c: imported
-	  Oni Guruma 3.5.4.
-
-Fri Jan 28 17:16:55 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Config.parse_resolv_conf):
-	  parse options line for ndots option.
-	  (Resolv::Hosts#lazy_initialize): return self.
-	  (Resolv::DNS#lazy_initialize): ditto.
-	  (Resolv::DNS::Config#lazy_initialize): ditto.
-	  Suggested by Sam Roberts.
-
-Thu Jan 27 17:15:03 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/tk/extconf.rb: support new tk scheme on bccwin32.
-	  fixed: [ruby-dev:25546]
-
-Thu Jan 27 13:18:03 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c (st_foreach): report success/failure by return value.
-	  [ruby-Bugs-1396]
-
-Thu Jan 27 00:12:19 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb (setup): support BSD style
-	  directory group inheritance (again).
-
-Thu Jan 27 00:02:40 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb (setup): support BSD style
-	  directory group inheritance. [ruby-dev:25440]
-
-	* test/fileutils/fileasserts.rb (assert_same_entry): show entry
-	  difference.
-
-Wed Jan 26 17:12:50 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: forgot to initialize parser struct.  [ruby-dev:25492]
-
-	* parse.y (parser_yylex): no tLABEL on EXPR_BEG.
-	  [ruby-talk:127711]
-
-Wed Jan 26 14:12:58 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/Setup*: remove tcltklib.
-
-Wed Jan 26 12:45:16 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/tk/extconf.rb: support new tk scheme on mswin32.
-	 fixed: [ruby-dev:25535]
-
-Wed Jan 26 10:45:19 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (flock_winnt, flock_win95): unlock file even if
-	  LOCK_NB is specified.
-
-Tue Jan 25 23:10:48 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk: merge tcltklib for Ruby/Tk installation control
-
-	* ext/tcltklib: remove
-
-Tue Jan 25 17:05:15 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (proc_options): correct -T option in RUBYOPT.
-	  fixed: [ruby-dev:25512]
-
-Tue Jan 25 14:05:52 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fix SEGV bug; trouble on canceling remained
-	  after scripts [ruby-dev:25479]: NULL current namespace when deleting
-	    Tk interpreter [ruby-talk:126225]
-
-	* ext/tcltklib/extconf.rb: bug fix; TCL_ENABLE_THREAD flag is inverted
-	  [ruby-talk:126360]
-
-	* ext/tcltklib/extconf.rb: add yet another native-thread check
-
-	* ext/tk/tkutil.c: fix SEGV bug; NULL string pointer when finalize
-	  Ruby interpreter
-
-	* ext/tk/lib/multi-tk.rb: avoid warning for deleted safeTk ip frame
-
-	* ext/tk/lib/tk/bindtag.rb: bug fix; new method of named bindtag
-	  doesn't return the created object [ruby-dev:25479]
-
-	* ext/tk/lib/tk/menu.rb: bug on treating arguments [ruby-dev:25479]
-
-	* ext/tk/lib/tk.rb: bug fix; cannot accept a callback ID string for
-	  a command argument [ruby-dev:25479]
-
-	* ext/tk/lib/multi-tk.rb: ditto
-
-	* ext/tk/lib/tk/*.rb: ditto
-
-	* ext/tk/lib/tkextlib/*.rb: ditto
-
-	* ext/tk/sample/demos-jp/anilabel.rb: new demo script
-
-	* ext/tk/sample/demos-en/anilabel.rb: ditto
-
-	* ext/tk/sample/tkHTML/ss.rb: local variable scope bug fix
-	  [ruby-dev:25479]
-
-Mon Jan 24 16:00:53 2005  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (guess_old): not use NKF.guess_old
-	  but NKF.guess1. fixed: [ruby-dev:25491]
-
-Mon Jan 24 15:44:25 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* document updates - [ruby-core:04296], [ruby-core:04301],
-	  [ruby-core:04302], [ruby-core:04307]
-
-Sun Jan 23 12:38:01 2005  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/wsdlDriver.rb: from 1.5.3-ruby1.8.2, operation which has
-	  capitalized name (such as KeywordSearchRequest in AWS) is defined as
-	  a method having uncapitalized name. (converted with
-	  GenSupport.safemethodname to handle operation name 'foo-bar').  it
-	  introduced serious incompatibility; in the past, it was defined as a
-	  capitalized.
-
-	  define capitalized method as well under that circumstance.
-
-Sun Jan 23 05:24:42 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspreq_to_der): should call
-	  GetOCSPReq at first.
-
-Sat Jan 22 22:59:08 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/ssl.rb (accept): rescue SSLError. [druby-ja:110]
-
-Sat Jan 22 22:27:28 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/unix.rb: fail if UNIXFileOwner is set. [druby-ja:111]
-
-Fri Jan 21 20:07:02 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Config.resolv): don't raise ResolvError.
-	  reported by Sam Roberts.  [ruby-talk:127133]
-
-Fri Jan 21 17:09:44 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (decode_utf7): use pack("U*") to encode UTF-8.
-
-	* lib/net/imap.rb (encode_utf7): use unpack("U*") to decode UTF-8.
-
-	* test/net/imap/test_imap.rb: added tests for Net::IMAP.
-
-Fri Jan 21 16:58:10 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (rb_push_glob): should work for NUL delimited patterns.
-
-	* dir.c (rb_glob2): should aware of offset in the pattern.
-
-Fri Jan 21 13:58:37 2005  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (u8tou16): fixed typo. fixed: [ruby-list:40546]
-
-Fri Jan 21 00:37:09 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/syck/rubyext.c (syck_parser_bufsize_set): avoid VC++ warning
-	  "local variable 'size' used without having been initialized".
-
-Thu Jan 20 11:42:02 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_new4): should propagate taintedness.
-
-	* env.h: rename member names in struct FRAME; last_func -> callee,
-	  orig_func -> this_func, last_class -> this_class.
-
-	* struct.c (rb_struct_set): use original method name, not callee
-	  name, to retrieve member slot.  [ruby-core:04268]
-
-	* time.c (time_strftime): protect from format modification from GC
-	  finalizers.
-
-Thu Jan 20 02:01:10 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): remove rb_obj_id_obsolete()
-
-Wed Jan 19 18:02:19 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/ipaddr.rb (to_s, test_to_s): too many colons with some cases.
-
-Wed Jan 19 01:16:30 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Config.parse_resolv_conf): ignore
-	  domain and search directive without an argument.
-	  reported by Sam Roberts.  [ruby-talk:126781]
-
-Mon Jan 17 23:33:46 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (aix): fix typo.  [ruby-talk:126401]
-
-Mon Jan 17 07:08:51 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/readline.c: suppress warnings.
-
-	* lib/irb/extend-command.rb (IRB::ContextExtender.def_extend_command):
-	  ditto.
-
-	* lib/irb/ext/history.rb (IRB::Context::set_last_value): ditto.
-
-	* lib/irb/ext/history.rb (IRB::Context::eval_history): ditto.
-
-	* lib/irb/locale.rb (IRB::Locale::real_load): ditto.
-
-	* lib/irb/slex.rb (SLex::Node::create_subnode): remove garbage.
-
-Mon Jan 17 00:09:42 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/uri/common.rb (PORT): typo fix. fixed: [ruby-core:04256]
-
-Sat Jan 15 14:57:22 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): ignore trailing CRs at the end of short
-	  options as well as long options.  fixed: [ruby-core:04232]
-
-Sat Jan 15 13:44:22 2005  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION): 0.1.2 -> 0.1.3.
-
-	* lib/rss/rss.rb: accept inheritance. [ruby-talk:126104]
-
-Wed Jan 12 12:29:28 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_define_method): incomplete subclass check.
-	  [ruby-dev:25464]
-
-	* class.c (rb_make_metaclass): class of metaclasses should be
-	  plain Class.  [ruby-list:40524]
-
-Tue Jan 11 20:58:52 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (remain_size): use buffered data instead of unreading to avoid
-	  inconsistency of text mode.  fixed: [ruby-dev:25446]
-
-Tue Jan 11 09:37:53 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* numeric.c (Init_Numeric): turn off floating point exceptions
-	  on bcc32. "1e300".to_f had crashed by overflow.
-
-Mon Jan 10 15:28:51 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI::Socket#request_line): should
-	  escape SCRIPT_NAME and PATH_INFO before being parsed as a URI.
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils#escape_path): add
-	  new method to escape URI path component.
-
-	* lib/webrick/ssl.rb (WEBrick::Config::SSL): the default value
-	  of :SSLEnable is false.
-
-	* test/webrick/{test_cgi.rb,webrick.cgi}: new file.
-
-	* test/webrick/utils.rb: require "webrick/https.h".
-
-Mon Jan 10 01:22:55 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_data_object_alloc): klass may be NULL.
-	  [ruby-list:40498]
-
-Sun Jan  9 14:12:17 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_f_select): IO list could be altered.  [ruby-dev:25312]
-
-Sun Jan  9 04:08:40 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/webrick/test_server.rb (test_daemon): delete an assertion
-	  which has possibility to fail by race condition.
-
-Sun Jan  9 03:22:46 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb (test_copy_entry): copy_entry
-	  copies only file type, not mtime. [ruby-dev:25383]
-
-Sat Jan  8 04:38:47 2005  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml.rb: Kernel#y requires an argument.
-
-Fri Jan  7 21:12:29 2005  TAMURA Takashi  <sheepman@tcn.zaq.ne.jp>
-
-	* random.c (rand_init): use ALLOC_N instead of ALLOCA_N
-	  [ruby-dev:25426]
-
-Fri Jan  7 20:01:31 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpproxy.rb (WEBrick::HTTPProxyServer#proxy_service):
-	  should delete trailing LF from the result of pack("m*").
-
-	* lib/webrick/httpproxy.rb (WEBrick::HTTPProxyServer#proxy_connect):
-	  - should delete trailing LF from the result of pack("m*").
-	  - clear Request-Line not to send the response by HTTPServer#run.
-
-	* lib/webrick/httputils (WEBrick::HTTPUtils.parse_qvalues):
-	  refine regexp (and change the name of a local variable).
-
-	* lib/webrick/server.rb (WEBrick::Daemon.start): prepared stdio
-	  don't allow changing its mode.
-
-	* test/webrick/*, sample/webrick/httpproxy.rb: add new files.
-
-Fri Jan  7 18:03:35 2005  Tanaka Akira  <akr@m17n.org>
-
-	* gc.c (mark_locations_array): avoid core dump with -O3.
-	  [ruby-dev:25424]
-
-Thu Jan  6 20:29:18 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_end): should return value.
-
-Thu Jan  6 19:59:03 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.c (rb_w32_close): didn't close socket handle.
-	  [ruby-dev:25414]
-
-	* win32/win32.c (rb_w32_open_osfhandle): bcc32's _open_osfhandle
-	  never set EMFILE.
-
-Thu Jan  6 17:22:41 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* random.c (random_seed): O_NONBLOCK isn't defined on some
-	  platforms. [ruby-dev:25417]
-
-Thu Jan  6 13:45:35 2005  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb: recognize +00:00 and GMT as a localtime.
-
-Thu Jan  6 07:58:28 2005  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/usage.rb (RDoc::RDoc.usage_no_exit): Allow for colons
-	  in path names on DOS machines. (thanks to Johan Nilsson)
-
-Thu Jan  6 00:02:35 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb: use MockClock.sleep instead of Kernel.sleep
-	  [ruby-dev:25387]
-
-Wed Jan  5 20:16:32 2005  Tanaka Akira  <akr@m17n.org>
-
-	* random.c (limited_big_rand): didn't work if SIZEOF_BDIGITS == 2.
-	  [ruby-dev:25408]
-
-	* random.c (random_seed): refined.
-
-Wed Jan  5 16:39:54 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* parse.y (BITSTACK_POP): workaround for bcc32 compiler's bug.
-	  shift assignment operator '>>=' for __int64 in struct may
-	  generate collapsed code. [ruby-dev:25342]
-
-	* win32/win32.[ch]: failed to compile on bcc32 (and probably wince)
-	  [ruby-dev:25306]
-
-Wed Jan  5 12:49:39 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_initialize): Thread objects cannot be initialized
-	  again.  fixed: [ruby-core:04067]
-
-Wed Jan  5 02:30:11 2005  Tanaka Akira  <akr@m17n.org>
-
-	* random.c (init_by_array): imported from mt19937ar-cok.tgz.
-	  (genrand_int32): ditto.
-	  (genrand_real): replaced with genrand_res53 in mt19937ar-cok.
-	  (rand_init): support bignum for longer seed.
-	  (random_seed): generate longer seed.
-	  (make_mask): new function.
-	  (limited_rand): ditto.
-	  (limited_big_rand): ditto.
-	  (rb_f_rand): call limited_rand and limited_big_rand.
-	  [ruby-dev:25403]
-
-Tue Jan  4 23:25:29 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_rand): should return positive random number.
-	  [ruby-dev:25401]
-
-Tue Jan  4 21:25:43 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/{test_drbssl.rb,test_drbunix.rb,ut_drb.rb}: use
-	  DRbService.ext_service. reduce sleep.
-
-Mon Jan  3 14:01:54 2005  Tanaka Akira  <akr@m17n.org>
-
-	* random.c (random_seed): don't use /dev/urandom if it is not
-	  character device.
-
-Mon Jan  3 11:37:42 2005  Tanaka Akira  <akr@m17n.org>
-
-	* random.c (random_seed): use /dev/urandom if available.
-	  [ruby-dev:25392]
-
-Tue Jan  4 11:15:29 2005  TAMURA Takashi  <sheepman@tcn.zaq.ne.jp>
-
-	* bignum.c (rb_big_rand): do not use rb_big_modulo to generate
-	  random bignums.  [ruby-dev:25396]
-
-Mon Jan  3 11:03:37 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/test_drb.rb: move TestDRbReusePort to new file.
-	  [ruby-dev:25238]
-
-	* test/drb/drbtest.rb: change timeout.
-
-	* test/drb/ignore_test_drb.rb: new file.
-
-Mon Jan  3 07:27:46 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpauth/htpasswd.rb (WEBrick::Htpasswd#reload):
-	  raise NotImplementedError if password is encrypted by digest
-	  algorithms. This patch is contributed by sheepman. [ruby-list:40467]
-
-	* lib/webrick/httpauth/digestauth.rb
-	  (WEBrick::HTTPAuth::DigestAuth#_authenticate): fix digest calculation.
-	  This patch is contributed by sheepman. [ruby-list:40482]
-
-	* lib/webrick/{httpauth.rb,httpauth/basicauth.rb,httpproxy.rb}: use
-	  pack/unpack-template char "m" instead of lib/base64.rb to do base64
-	  encoding/decoding. fixed: [ruby-dev:25336]
-
-	* test/webrick/test_httpauth.rb: new file.
-
-Sun Jan  2 15:42:10 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: add lazy stop_service.
-
-	* lib/drb/extserv.rb: ditto.
-
-Sun Jan  2 01:17:17 2005  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/drbtest.rb: add method DRbService.ext_service.
-
-	* test/drb/test_drb.rb: ditto.
-
-	* test/drb/test_drbssl.rb: ditto.
-
-Sat Jan  1 20:23:02 2005  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (argf_readpartial): new method ARGF.readpartial.
-	  (io_getpartial): extracted from io_readpartial.
-	  (io_readpartial): call io_getpartial.
-
-Sat Jan  1 17:44:54 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (each_capitalized): should join header field
-	  value.  This patch is contributed sheepman [ruby-list:40478]
-
-	* test/net/http/test_httpheader.rb: test it.
-
-Sat Jan  1 16:21:29 2005  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (copy_stream): use read/write instead of
-	  sysread/syswrite, which allows duck typing. [ruby-dev:25369]
-
-	* lib/fileutils.rb (copy_stream): does NOT support nonblocking IO.
-	  [ruby-dev:25370]
-
-	* lib/fileutils.rb (copy_entry): could not copy symlink.
-
-	* test/fileutils/test_fileutils.rb: test copy_entry, copy_file,
-	  copy_stream.
-
-Sat Jan  1 04:20:23 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ns_spki.c (ossl_spki_set_challenge): should call
-	  StringValue before GetSPKI. fixed: [ruby-dev:25359].
-
-Sat Jan  1 01:13:28 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_autoload): [ruby-dev:25373]
-
-Fri Dec 31 14:10:43 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_formatter.rb (RI::TextFormatter::display_flow_item):
-	  Fix problem if heading contains formatting.
-
-Fri Dec 31 00:08:02 2004  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in (HAVE_RLIM_T): removed because not used.
-
-Thu Dec 30 22:45:39 2004  Tanaka Akira  <akr@m17n.org>
-
-	* rubyio.h: don't deprecate rb_read_check.
-
-	* io.c (STDIO_READ_DATA_PENDING): reverted from old READ_DATA_PENDING
-	  to check stdio read buffer.
-	  (rb_read_check): use STDIO_READ_DATA_PENDING.
-	  (rb_read_pending): ditto.
-	  (rb_getc): ditto.
-
-Thu Dec 30 05:39:35 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y: eliminate unused members in struct parser_params.
-	  [ruby-dev:25258] (again)
-
-	* parse.y: make parser_new() static.
-
-Thu Dec 30 00:41:42 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (svalue_to_avalue): [ruby-dev:25366]
-
-	* string.c (rb_str_justify): [ruby-dev:25367]
-
-Wed Dec 29 11:07:07 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/template/html/kilmer.rb: Update to use new
-	  sections.
-
-Tue Dec 28 22:31:46 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_justify): create buffer string after argument type
-	  conversion.  fixed: [ruby-dev:25341]
-
-Tue Dec 28 17:18:17 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/net/telnet.rb (preprocess): remove NULL unless binmode.
-	  fixed: [ruby-list:40320]
-
-Tue Dec 28 15:41:48 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (reinit): should initialize all static
-	  variables.  fixed: [ruby-list:40445]
-
-Tue Dec 28 15:25:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (Kconv::RegexpEucjp): second byte is up to
-	  0xfe.
-
-	* ext/nkf/lib/kconv.rb (Kconv#kconv): should handle UTF8 and UTF16
-	  properly.
-
-Tue Dec 28 13:35:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (rb_deflate_s_deflate, rb_inflate_s_inflate): ensure
-	  freeing internal zstreams.  fixed: [ruby-dev:25309]
-
-	* ext/zlib/zlib.c (rb_deflate_init_copy): replace rb_deflate_clone.
-
-Mon Dec 27 20:02:14 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fix SEGV bug when deleting Tk interp
-
-	* ext/tk/lib/multi-tk.rb: ditto
-
-Mon Dec 27 16:54:05 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509name.c (Init_ossl_x509name): should use
-	  rb_hash_new to get exactly a Hash. fix [ruby-dev:25325].
-
-Mon Dec 27 15:29:12 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb (cp_r): tested wrong file name.
-	  [ruby-dev:25339]
-
-Mon Dec 27 15:15:18 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mv): should raise error when moving a
-	  directory to the (empty) directory. [ruby-talk:124368]
-
-	* lib/fileutils.rb (mv): wrongly did not overwrite file on Win32
-	  platforms.
-
-Mon Dec 27 14:36:20 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (NUM2RLIM, RLIM2NUM): Without SIZEOF_RLIM_T is not error.
-	  fixed: [ruby-dev:25346]
-
-Sun Dec 26 16:21:39 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (Net::IMAP::PlainAuthenticator): added a new class
-	  to support the PLAIN authentication mechanism. Thanks, Benjamin
-	  Stiglitz.
-
-Sat Dec 25 01:28:23 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_select): [ruby-dev:25312]
-
-Fri Dec 24 23:27:18 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/image.rb: TkPhotoImage#cget bug fix
-
-Fri Dec 24 03:06:13 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_reopen, rb_io_reopen): prohibit to change access mode for
-	  special IO ports.  [ruby-dev:25225]
-
-	* io.c (next_argv): reduce use of stdio.
-
-Fri Dec 24 02:22:53 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_loader_transfer): check type conversion.
-
-	* ext/syck/rubyext.c (syck_parser_assign_io, rb_new_syck_node): duck
-	  typing.
-
-	* ext/syck/rubyext.c (syck_parser_s_alloc, syck_parser_initialize):
-	  allocation framework.
-
-	* ext/syck/rubyext.c (syck_emitter_s_alloc, syck_emitter_initialize):
-	  ditto.
-
-Fri Dec 24 01:21:00 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/blt.rb: add BLT extension support
-
-	* ext/tk/lib/tkextlib/blt/*.rb: ditto
-
-	* ext/tk/lib/tkextlib/blt/tile/*.rb: ditto
-
-Thu Dec 23 23:43:24 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_setgroups): check if the argument length is
-	  modified.  fixed: [ruby-dev:25285]
-
-	* process.c (SIZEOF_RLIM_T): err if size of rlim_t is not set.
-
-Thu Dec 23 19:08:41 2004  Tanaka Akira  <akr@m17n.org>
-
-	* rubyio.h: rename FMODE_UNSEEKABLE to FMODE_DUPLEX.
-
-	* io.c (io_check_tty): extracted function to set FMODE_LINEBUF and
-	  FMODE_DUPLEX.
-
-Thu Dec 23 13:13:33 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: define TclTkLib::COMPILE_INFO and
-	  RELEASE_DATE
-
-	* ext/tcltklib/extconf.rb: ditto
-
-	* ext/tk/tkutil.c: define TkUtil::RELEASE_DATE
-
-	* ext/tk/lib/tk.rb: define Tk::RELEASE_DATE
-
-Thu Dec 23 00:16:32 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (bsdi): use $(CC) for LDSHARED.  fixed [ruby-dev:25270]
-
-Wed Dec 22 11:14:55 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_mode_modenum): replace O_ACCMODE with O_RDWR.
-	  fixed: [ruby-dev:25273]
-
-Wed Dec 22 08:34:32 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/sym.c (rb_dlsym_initialize): extract internal pointers after
-	  all argument conversion.  fixed: [ruby-dev:25271]
-
-Tue Dec 21 16:15:21 2004  Michael Neumann  <mneumann@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb: use "" instead of "." if prefix argument is
-	  nil in proxy methods. nil is default value.
-
-	* test/xmlrpc/test_webrick_server.rb, test/xmlrpc/webrick_testing.rb:
-	  use threads instead of forking. this should fix issue #1208
-	  (http://rubyforge.org/tracker/?func=detail&atid=1698&aid=1208&group_id=426).
-	  removed testing of SSL enabled servlet as this hangs.
-
-Wed Dec 22 00:05:10 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/*, test/soap/*, sample/soap/authheader/*: eval cleanup.
-
-Tue Dec 21 22:07:41 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_decode_all): use rb_str_new4
-	  to avoid SEGV.
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_traverse, ossl_asn1_decode,
-	  ossl_asn1_decode_all): temporary value should be marked volatile.
-
-Tue Dec 21 12:42:34 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_traverse, ossl_asn1_decode):
-	  use rb_str_new4 to avoid SEGV. fix [ruby-dev:25261]
-
-	* test/openssl/test_asn1.rb: add tests for OpenSSL::ASN1.
-
-Tue Dec 21 12:10:04 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/grid.rb: rescue bug of 'grid configure' on Tcl/Tk8.3-
-
-Mon Dec 20 22:52:29 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* added samples for the previous soap4r's commit.
-
-Mon Dec 20 22:56:39 2004  Tanaka Akira  <akr@m17n.org>
-
-	* gc.c (set_stack_end): gcc noinline attribute is available since
-	  gcc-3.1.
-
-Mon Dec 20 22:40:31 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* added files:
-	  * lib/soap/mapping/wsdl*.rb
-	  * lib/wsdl/soap/element.rb
-	  * lib/wsdl/xmlSchema/simpleContent.rb
-
-	* modified files:
-	  * lib/soap/*
-	  * lib/wsdl/*
-	  * lib/xsd/*
-	  * test/soap/*
-	  * test/wsdl/*
-	  * test/xsd/*
-
-	* summary
-	  * imported from the soap4r repository.  Version: 1.5.3-ruby1.8.2
-
-	  * added several XSD basetype support: nonPositiveInteger,
-	    negativeInteger, nonNegativeInteger, unsignedLong, unsignedInt,
-	    unsignedShort, unsignedByte, positiveInteger
-
-	  * HTTP client connection/send/receive timeout support.
-
-	  * HTTP client/server gzipped content encoding support.
-
-	  * improved WSDL schema definition support; still is far from
-	    complete, but is making step by step improvement.
-
-Mon Dec 20 14:45:19 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/https.rb: delete descriptions about key_file and cert_file.
-	  fixed: [ruby-dev:25243]
-
-	* ext/openssl/lib/net/telnets.rb: ditto.
-
-Mon Dec 20 14:07:02 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: supports new features of Tcl/Tk8.5a2
-
-	* ext/tk/lib/tk/clock.rb: ditto
-
-	* ext/tk/lib/tk/text.rb: ditto
-
-	* ext/tk/lib/tk/panedwindow.rb: ditto
-
-Mon Dec 20 13:51:40 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyport): [ruby-talk:124072]
-
-Mon Dec 20 10:51:58 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (special_local_set): prevent the parser object from GC.
-	  fixed: [ruby-dev:25252]
-
-Mon Dec 20 03:30:40 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session#initialize): empty session id was
-	  used if request had no session key.  fixed: [ruby-core:03981]
-
-Mon Dec 20 01:51:01 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (make_struct): [ruby-dev:25249]
-
-Mon Dec 20 00:16:54 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/encodings/SHIFT_JIS.rb: fixed LoadError bug.
-	  [ruby-core:3958]
-
-Sun Dec 19 17:24:59 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (enable_rpath): use rpath flag to embed the library
-	  path into extensions on ELF environment.  [ruby-dev:25035]
-
-Sun Dec 19 11:01:25 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb: use standalone runner for -e.
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner#options): accept
-	  multiple -p and -x options.
-
-	* lib/test/unit/collector/dir.rb (Test::Unit::Collector::Dir#recursive_collect):
-	  ditto.
-
-Sat Dec 18 16:36:23 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (rb_deflate_s_deflate, rb_inflate_s_inflate):
-	  disallow interrupt by type conversion.  fixed: [ruby-dev:25226]
-
-Sat Dec 18 15:09:02 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/webrick/httpauth.rb,
-	  lib/webrick/httpauth/{basicauth.rb,digestauth.rb}: use
-	  pack/unpack-template char "m" instead of lib/base64.rb to do base64
-	  encoding/decoding.
-
-Sat Dec 18 10:51:01 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_open_dir): new function.  [ruby-dev:25242]
-
-	* io.c (rb_f_open): add type check for return value from to_open.
-
-Fri Dec 17 16:44:26 2004  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in (ac_cv_sizeof_rlim_t): set 8 for BSD/OS.
-	  Reported by OHARA Shigeki.  [ruby-dev:25236]
-
-Fri Dec 17 16:28:12 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fix bug on setting up system encoding
-
-	* ext/tk/lib/tk/event.rb: fix error on require process
-
-	* ext/tk/lib/tk/font.rb: fix abnormal termination error on Windows
-
-	* ext/tk/lib/tk/virtevent.rb: TkVirtualEvent::PreDefVirtEvent.new()
-	  accepts event-sequence arguments
-
-	* ext/tk/lib/tk/text.rb: fail to dump embedded images
-
-	* ext/tk/lib/tk/text.rb: tag_nextrange and tag_prevrange returns wrong
-	  types of values
-
-	* ext/tk/lib/tk/texttag.rb: nextrange and prevrange returns wrong
-	  types of values
-
-	* ext/tk/lib/tk/text.rb: add TkText::IndexModMethods module and
-	  TkText::IndexString class to treat text index modifiers
-
-	* ext/tk/lib/tk/texttag.rb: use TkText::IndexModMethods module
-
-	* ext/tk/lib/tk/textmark.rb: ditto
-
-	* ext/tk/lib/tk/textimage.rb: ditto
-
-	* ext/tk/lib/tk/textwindow.rb: ditto
-
-	* ext/tk/lib/tk/textimage.rb: wrong gravity of text mark for embedded
-	  image
-
-	* ext/tk/lib/tk/textwindow.rb: wrong gravity of text mark for
-	  embedded window
-
-Fri Dec 17 13:33:58 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session#initialize): control adding
-	  session_id hidden fields.  fixed: [ruby-talk:123850]
-
-Fri Dec 17 00:01:48 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_proc_arity, rb_node_arity, rb_mod_method_arity,
-	  rb_obj_method_arity): new functions to obtain method arity.
-	  [ruby-dev:25143]
-
-Thu Dec 16 23:31:13 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): create RUBYARCHDIR also when no extension
-	  is installed.  fixed: [ruby-dev:25215]
-
-Thu Dec 16 22:36:57 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/test_drb.rb: adjust and reduce sleep.
-
-Thu Dec 16 18:37:08 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.c (ossl_raise): refine message format.
-
-Thu Dec 16 16:29:44 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/demos-en/widget: modify version check for
-	  supporting features
-
-Thu Dec 16 16:03:50 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/bindtag.rb: bug fix [ruby-talk: 123667]
-
-	* ext/tk/lib/tk/timer.rb: accept :idle for the interval argument
-
-	* ext/tk/lib/tk.rb: add TkComm._callback_entry?()
-
-	* ext/tk/lib/multi-tk.rb: add MultiTkIp.cb_entry_class
-
-	* ext/tk/lib/tk/canvas.rb: use TkComm._callback_entry?()
-
-	* ext/tk/lib/tk/canvastag.rb: ditto
-
-	* ext/tk/lib/tk/dialog.rb: ditto
-
-	* ext/tk/lib/tk/optiondb.rb: ditto
-
-	* ext/tk/lib/tk/text.rb: ditto
-
-	* ext/tk/lib/tk/texttag.rb: ditto
-
-	* ext/tk/lib/tk/textwindow.rb: ditto
-
-	* ext/tk/lib/tk/timer.rb: ditto
-
-	* ext/tk/lib/tk/validation.rb: ditto
-
-	* ext/tk/lib/tkextlib/*: ditto
-
-Thu Dec 16 04:02:28 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/extconf.rb: bison is not needed if ripper.c exists.
-	  [ruby-dev:25191]
-
-Thu Dec 16 03:27:10 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: remove junk.
-
-Thu Dec 16 00:57:30 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (rb_syck_io_str_read): [ruby-core:03973]
-
-Thu Dec 16 00:43:29 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: changed default binded address family to use an
-	  available address family of host name. [druby-ja:101]
-
-	* lib/drb/ssl.rb: ditto
-
-Wed Dec 15 17:47:17 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#start_thread):
-	  should log about all accepted socket. [ruby-core:03962]
-
-	* lib/webrick/accesslog.rb (WEBrick::AccessLog#setup_params):
-	  "%%" and "%u" are supported. [webricken:135]
-
-	* lib/webrick/httpservlet/filehandler.rb
-	  (WEBrick::HTTPServlet::FileHandler#check_filename):
-	  :NondisclosureName is acceptable if it is Enumerable.
-
-	* lib/webrick/config.rb (WEBrick::Config::FileHandler):
-	  default value of :NondisclosureName is [".ht*", "*~"].
-
-Wed Dec 15 16:10:23 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_id_obsolete): warn always.
-
-Wed Dec 15 15:31:02 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/set.rb (Set#==): [ruby-dev:25206]
-
-Wed Dec 15 14:32:18 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_fdisset): check whether the handle is valid.
-
-Wed Dec 15 10:30:37 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/openssl/ossl_digest.c (ossl_digest_initialize): [ruby-dev:25198]
-
-Tue Dec 14 19:17:15 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* utf8.c (utf8_is_mbc_ambiguous): [ruby-talk:123561]
-
-	* utf8.c (utf8_mbc_to_normalize): ditto.
-
-Tue Dec 14 17:08:15 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_close): need to reset osfhnd().
-
-Tue Dec 14 14:03:57 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.c (ossl_raise): avoid buffer overrun.
-	  [ruby-dev:25187]
-
-Tue Dec 14 12:36:04 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::initialize): generate new
-	  session if given session_id does not exist.  [ruby-list:40368]
-
-Tue Dec 14 08:47:45 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_eval): should mark ruby_eval_tree.  [ruby-dev:25189]
-
-Mon Dec 13 18:13:52 2004  Tanaka Akira  <akr@m17n.org>
-
-	* gc.c (set_stack_end): new function to obtain stack end address.
-	  set_stack_end obtains a stack end address by an address of local
-	  variable in the function.
-	  (SET_STACK_END, STACK_END): use set_stack_end.  don't use alloca.
-	  This makes the conservative garbage collector to scan a stack frame
-	  of the garbage_collect function itself.  This is required because
-	  callee-save registers may be stored in the frame.
-	  [ruby-dev:25158]
-
-Mon Dec 13 02:45:51 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/curses/curses.c (window_subwin): call NUM2INT() before
-	  GetWINDOW(). fixed: [ruby-dev:25161]
-
-Mon Dec 13 00:58:02 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (cleanpath_aggressive): make it private.
-	  (cleanpath_conservative): ditto.
-	  Suggested by Daniel Berger.  [ruby-core:3914]
-
-Sun Dec 12 21:32:14 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_super.rb (TestSuper#test_define_method): now methods
-	  from procs can call super.
-
-Sun Dec 12 10:35:10 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/template/html/html.rb (RDoc::Page): Don't
-	  show an accessor's r/w flag if none was specified
-
-Sun Dec 12 10:14:03 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc::parse_files): Never exclude files
-	  explicitly given on the command line.
-
-Sat Dec 11 21:10:16 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: add DRbRemoteError. [ruby-list:40348],
-	  [ruby-list:40390]
-
-	* test/drb/drbtest.rb: ditto.
-
-	* test/drb/ut_drb.rb: ditto.
-
-Sat Dec 11 13:08:28 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sample/optparse/subcommand.rb: a sample for sub commands like
-	  cvs.  contributed by Minero Aoki.
-
-Fri Dec 10 08:39:48 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_listen): get OpenFile just before calling
-	  listen(2).
-
-Thu Dec  9 16:28:35 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/sdbm/init.c (GetDBM): typo.
-
-Thu Dec  9 16:21:51 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI#setup_header): avoid
-	  SecurityError. [ruby-dev:24970]
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): should wait
-	  for reading request till data arrive. [ruby-talk:121068]
-
-Thu Dec  9 14:38:35 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_inspect): escape # which starts an expression
-	  substitution.  fixed: [ruby-core:03922]
-
-	* string.c (rb_str_dump): not escape # which isn't a substitution.
-
-Thu Dec  9 12:31:53 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (pipe_open): should set prog if argc != 0.
-
-Thu Dec  9 10:54:36 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/dbm.c (fdbm_select): [ruby-dev:25132]
-
-	* ext/sdbm/init.c: ditto.
-
-	* ext/gdbm/gdbm.c: ditto.
-
-Thu Dec  9 10:19:18 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/socket/test_socket.rb (test_setsockopt): use SO_LINGER instead
-	  of SO_BINDTODEVICE.  fixed: [ruby-dev:25133]
-
-Thu Dec  9 03:08:36 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_init): set root-win title to "ruby" when
-	  the running script is '-e one-liner' or '-' (stdin).
-
-	* ext/tcltklib/extconf.rb: add find_library("#{lib}#{ver}",..) for
-	  stub libs
-
-	* ext/tk/lib/tk/textmark.rb: TkTextMarkCurrent and TkTextMarkAnchor
-	  have a wrong parent class.
-
-	* ext/tk/lib/tk/dialog.rb: rename TkDialog2 --> TkDialogObj and
-	  TkWarning2 --> TkWarningObj (old names are changed to alias names)
-
-	* ext/tk/lib/tk/dialog.rb: bug fix of treatment of 'prev_command'
-	  option and hashes for configuration
-
-	* ext/tk/lib/tk/dialog.rb: add TkDialogObj#name to return the
-	  button name
-
-	* ext/tk/lib/tk/radiobutton.rb: rename enbugged method value() ==>
-	  get_value() and value=(val) ==> set_value(val).
-
-	* ext/tk/lib/tk/menu.rb: add TkMenu.new_menuspec
-
-	* ext/tk/lib/tk/menu.rb: add alias (TkMenuButton = TkMenubutton,
-	  TkOptionMenuButton = TkOptionMenubutton)
-
-	* ext/tk/lib/tk/event.rb: new method aliases (same as option keys of
-	  event_generate) for Event object
-
-	* ext/tk/lib/tk/font.rb: configinfo returns proper types of values
-
-	* ext/tk/lib/tk.rb: bind methods accept subst_args + block
-
-	* ext/tk/lib/tk/canvas.rb: ditto
-
-	* ext/tk/lib/tk/canvastag.rb: ditto
-
-	* ext/tk/lib/tk/frame.rb: ditto
-
-	* ext/tk/lib/tk/text.rb: ditto
-
-	* ext/tk/lib/tk/texttag.rb: ditto
-
-	* ext/tk/lib/tk/toplevel.rb: ditto
-
-	* ext/tk/lib/tkextlib/*: ditto and bug fix
-
-Wed Dec  8 23:54:29 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/template/html/html.rb (RDoc::Page): Typo
-	  meant that h2 tag was invisible.
-
-Wed Dec  8 22:10:02 2004  Tanaka Akira  <akr@m17n.org>
-
-	* rubyio.h, io.c, ext/dl/dl.c, ext/pty/pty.c, ext/socket/socket.c:
-	  create FILE object only when required: popen(3) and DL's IO#to_ptr.
-	  [ruby-dev:25122]
-
-	* io.c (rb_io_binmode): use setmode for Human68k.  [ruby-dev:25121]
-
-Wed Dec  8 20:13:06 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* process.c (rb_spawn): support for DJGPP.
-
-	* lib/mkmf.rb (VPATH): specify the implicit path separator for DJGPP.
-
-Wed Dec  8 17:48:22 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): merge Guy Decoux's argument preserve
-	  patch in [ruby-core:03874].
-
-Wed Dec  8 17:37:33 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_pipe_exec): need to close original socket
-	  handle.
-
-Wed Dec  8 14:31:36 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): [ruby-dev:25104]
-
-Wed Dec  8 13:49:46 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_pipe_exec): must close original handle
-	  before exec. fixed: [ruby-dev:25112]
-
-Wed Dec  8 11:46:26 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (string_content): get rid of segfault at empty evstr.
-	  fixed: [ruby-dev:25113]
-
-Wed Dec  8 03:26:51 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_bio.c (ossl_obj2bio): should not use fptr->f.
-	  [ruby-dev:25101]
-
-Wed Dec  8 03:26:41 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* runruby.rb: prepend LIBRUBY_SO to LD_PRELOAD as well as rubytest.rb.
-
-Wed Dec  8 01:35:44 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (is_socket): reorder of function definitions.
-
-Wed Dec  8 00:44:31 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (pipe_open): win32 bidirectional pipe support.
-
-	* win32/win32.[ch] (rb_w32_pipe_exec): ditto.
-
-	* win32/win32.[ch] (socketpair): new function. POSIX socketpair
-	  emulation.
-
-	* win32/win32.c (socketpair_internal): ditto.
-
-Wed Dec  8 00:25:07 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_version.rb: added version check test.
-	  [ruby-dev:25053]
-
-Tue Dec  7 15:40:38 2004  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (io_fwrite): avoid context switch before writing to stderr.
-	  [ruby-dev:25080]
-
-	* rubyio.h: refine deprecated declaration.
-
-	* configure.in, file.c, io.c: remove useless check: fseeko, etc.
-
-Tue Dec  7 13:42:07 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* dir.c (dir_s_mkdir): win32 special processing doesn't need any
-	  longer.
-
-	* win32/win32.[ch] (rb_w32_mkdir): new function. POSIX.1 compatible
-	  interface.
-
-	* win32/win32.[ch] (rb_w32_rmdir): new function.
-
-Tue Dec  7 00:27:37 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_setgroups): [ruby-dev:25081]
-
-Mon Dec  6 23:07:57 2004  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in: check -lsocket for socketpair and shutdown.
-	  reported by Ville Mattila.  [ruby-core:03903]
-
-Mon Dec  6 23:00:45 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (ac_cv_sizeof_rlim_t): setup for DJGPP.
-
-	* io.c (is_socket, shutdown): define dummy macros for DJGPP.
-
-	* process.c: use SIZEOF_RLIM_T instead of HAVE_RLIM_T for DJGPP.
-
-Mon Dec  6 21:19:40 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (is_socket): fix typos. [ruby-core:03900]
-
-Mon Dec  6 20:13:28 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (is_socket): new function.
-
-	* io.c (rb_io_close_read, rb_io_close_write): use is_socket().
-
-	* io.c (rb_io_fptr_finalize): need to check fptr->f before calling
-	  rb_io_fptr_cleanup().
-
-	* io.c (pipe_open): win32 pipe support (experimental).
-
-	* win32/win32.[ch] (rb_w32_pipe_exec): return file descriptors
-	  instead of FILE structure objects.
-
-	* win32/win32.[ch] (rb_w32_is_socket): new function.
-
-Mon Dec  6 19:40:40 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* Makefile.in (.y.c): simplify the rule.
-
-Mon Dec  6 18:08:10 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_eqq): document fix.  [ruby-talk:122541]
-
-Mon Dec  6 17:49:30 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (run_trap_eval): add prototype for Microsoft compiler.
-
-Mon Dec  6 17:32:38 2004  Tanaka Akira  <akr@m17n.org>
-
-	* rubyio.h, intern.h, io.c, file.c, process.c, ext/socket/socket.c,
-	  ext/pty/pty.c, ext/io/wait/wait.c, ext/openssl/ossl_ssl.c:
-	  Use own buffering mechanism instead of stdio.  [ruby-dev:25056]
-
-	* io.c, ext/stringio/stringio.c, test/ruby/ut_eof.rb:
-	  EOF flag removed.
-
-Mon Dec  6 17:15:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/socket/test_socket.rb (TestBasicSocket#test_setsockopt):
-	  BasicSocket#setsockopt dumps core.  [ruby-dev:25039]
-
-	* test/socket/test_tcp.rb (TestTCPSocket#test_recvfrom):
-	  TCPSocket#recvfrom dumps core.  [ruby-dev:24705]
-
-	* test/socket/test_udp.rb (TestUDPSocket#test_connect):
-	  UDPSocket#connect dumps core.  [ruby-dev:25045]
-
-	* test/socket/test_udp.rb (TestUDPSocket#test_bind):
-	  UDPSocket#bind dumps core.  [ruby-dev:25057]
-
-Mon Dec  6 09:59:23 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fread): take VALUE argument.
-
-	* ext/socket/socket.c (sock_connect): use rb_str_new4().
-	  [ruby-dev:25052]
-
-	* eval.c (rb_yield_0): [ruby-dev:25051]
-
-Mon Dec  6 01:32:31 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_pkey_rsa.c (ossl_rsa_public_encrypt,
-	  ossl_rsa_public_decrypt, ossl_rsa_private_encrypt,
-	  ossl_rsa_private_decrypt): should take an optional argument
-	  to specify padding mode. [ruby-talk:122539]
-
-	* ext/openssl/ossl_pkey_rsa.c (Init_ossl_rsa): add new constants
-	  PKCS1_PADDING, SSLV23_PADDING, NO_PADDING and PKCS1_OAEP_PADDING
-	  under OpenSSL::PKey::RSA.
-
-	* test/openssl/test_pkey_rsa.rb: new file.
-
-Sun Dec  5 19:39:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Completion#complete): new parameter
-	  to direct case insensitiveness.
-
-	* lib/optparse.rb (OptionParser#order!): ignore case only for long
-	  option.  [ruby-dev:25048]
-
-Sun Dec  5 00:54:32 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* mkconfig.rb: setup library paths before requiring library.
-	  [ruby-core:03892]
-
-Sat Dec  4 22:54:15 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_write): remove rb_str_locktmp().  [ruby-dev:25050]
-
-	* io.c (io_fwrite): takes VALUE string as an argument.
-	  [ruby-dev:25050]
-
-	* ext/socket/socket.c (sock_connect): remove rb_str_locktmp().
-	  [ruby-dev:25050]
-
-	* ext/socket/socket.c (udp_connect): [ruby-dev:25045]
-
-	* ext/socket/socket.c (udp_bind): ditto.
-
-	* ext/socket/socket.c (udp_send): ditto.
-
-	* ext/socket/socket.c (bsock_send): ditto.
-
-	* ext/socket/socket.c (s_recvfrom): ditto.
-
-	* hash.c (rb_hash_hash): should provide "hash" method where "eql?"
-	  is redefined.  [ruby-talk:122482]
-
-Sat Dec  4 21:29:05 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: (In previous commit) new method chown.
-
-	* lib/fileutils.rb: (In previous commit) new method chown_R.
-
-	* lib/fileutils.rb: (In previous commit) new method chmod_R
-	  wrongly added.  Removed now.
-
-Sat Dec  4 20:45:52 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mkdir, mkdir_p): should chmod explicitly.
-	  [ruby-core:03881]
-
-Sat Dec  4 18:54:09 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: removed empty lines from output.
-
-Sat Dec  4 18:49:09 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION): 0.1.1 -> 0.1.2
-
-	* lib/rss/rss.rb: #item=/#set_item and so on are obsolete.
-
-Sat Dec  4 14:28:56 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/code_objects.rb (RDoc::Context::Section::set_comment):
-	  Section comments may now be bracketed by lines which are
-	  ignored. You can now write
-	      # -----------
-	      # :section: Dave's Section
-	      # comment material
-	      # -----------
-	   The lines before :section: are removed, and identical lines at the end are
-	   also removed if present.
-
-Sat Dec  4 00:35:08 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (bsock_setsockopt): [ruby-dev:25039]
-
-Fri Dec  3 12:25:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.h: fix prototype for C++.
-
-Fri Dec  3 01:55:24 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: widget configuration by TkWindow#method_missing
-	  returns proper object. "widget.option = val" returns val, and
-	  "widget.option(val)" returns self.
-
-	* ext/tk/lib/tk/font.rb: TkFont#replace accepts only one font argument.
-
-	* ext/tk/lib/tk/radiobutton.rb: add TkRadiobutton#value and
-	  TkRadiobutton#value=(val).
-
-	* ext/tk/lib/tk/spinbox.rb: callback substitution support on
-	  command option.
-
-	* ext/tk/sample/demos-en/widget: bug fix (wrong image height)
-
-	* ext/tk/sample/demos-jp/widget: ditto.
-
-Fri Dec  3 00:21:05 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): prepare to pass a block from "call" method
-	  to a Proc generated by Method#to_proc.  [ruby-dev:25031]
-
-	* eval.c (rb_yield_0): actually passes a block given to "call".
-
-	* object.c (convert_type): use rb_respond_to() again.  this fix is
-	  based on [ruby-dev:25021]
-
-	* eval.c (rb_respond_to): funcall respond_to? if it's redefined.
-	  [ruby-dev:25021]
-
-Thu Dec  2 15:13:53 2004  Michael Neumann  <mneumann@ruby-lang.org>
-
-	* test/xmlrpc/test_parser.rb, test/xmlrpc/data/*.expected: Expected
-	  values are now stored in YAML instead of using #inspect. This fixes
-	  false hash order.
-
-Fri Dec  3 00:11:48 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_file_initialize): [ruby-dev:25032]
-
-Thu Dec  2 16:41:03 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_protect): prevent continuations created inside from being
-	  called from the outside.  [ruby-dev:25003]
-
-	* eval.c (rb_callcc, rb_cont_call): prohibit calling from different
-	  signal contexts.  [ruby-dev:25022]
-
-Thu Dec  2 10:45:02 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/readline/test_readline.rb: fix for NetBSD.
-
-Thu Dec  2 09:57:24 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/ostruct.rb (OpenStruct::Marshaler): OpenStruct can be
-	  marshaled again.  [ruby-core:03862]
-
-Thu Dec  2 09:30:58 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (thread_mark): mark thread group.  [ruby-dev:25020]
-
-	* eval.c (thgroup_add): check whether the argument is really a Thread.
-
-Thu Dec  2 07:57:16 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_ctl): [ruby-dev:25019]
-
-Wed Dec  1 06:13:00 2004  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c: add constant NKF::VERSION
-
-	* ext/nkf/nkf.c(guess): this becomes an alias of guess2
-
-	* ext/nkf/test.rb: add --no-cp932
-
-	* ext/nkf/nkf-utf8/nkf.c: original nkf2 revision 1.47
-
-Wed Dec  1 02:21:02 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (sighandler): call handler immediately only for default
-	  handlers.  [ruby-dev:25003]
-
-Tue Nov 30 23:49:12 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): errno should be preserved for rb_sys_fail() when
-	  fork failed.
-
-Tue Nov 30 16:18:50 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fread): need not to null terminate.  [ruby-dev:24998]
-
-	* eval.c (rb_eval): should check previous frame for ZSUPER.
-
-	* io.c (read_all): remove unnecessary rb_str_resize().
-	  [ruby-dev:24996]
-
-	* io.c (io_readpartial): ditto.
-
-	* io.c (io_read): ditto.
-
-Tue Nov 30 14:58:33 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* instruby.rb (install): add arguments explicitly to "super".
-
-Tue Nov 30 00:49:08 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (PUSH_FRAME): flags should have been initialized.
-
-	* eval.c (rb_eval): [ruby-core:03856]
-
-	* io.c (rb_io_sysread): use temporary lock.  [ruby-dev:24992]
-
-Tue Nov 30 00:12:57 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regparse.c: now handles many alternatives (over 500000)
-	  in regexp. [ruby-dev:24773]
-
-Mon Nov 29 16:06:04 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_write): insufficiently filled string
-	  being extended when overwriting.  [ruby-core:03836]
-
-Mon Nov 29 15:59:05 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/ostruct.rb (OpenStruct::method_missing): check method
-	  duplication for -d.
-
-	* lib/ostruct.rb (OpenStruct::initialize): ditto.
-
-Mon Nov 29 15:22:28 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/io/nonblock/test_flush.rb: abandon tests when io/nonblock is
-	  not supported.
-
-Mon Nov 29 13:37:54 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (fptr_finalize): must not use FILE after fclose().
-	  [ruby-dev:24985]
-
-Mon Nov 29 13:13:13 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): push back the last space before next
-	  loop because CharNext() eats it.
-
-Mon Nov 29 03:08:30 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (convert_type): [ruby-core:03845]
-
-	* eval.c (rb_funcall_rescue): new function.
-
-	* object.c (rb_Array): avoid using rb_respond_to().
-
-	* object.c (rb_Integer): ditto.
-
-	* eval.c (get_backtrace): no conversion for nil.
-
-	* parse.y (reduce_nodes): empty body should return nil.
-
-Mon Nov 29 01:18:18 2004  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (rb_io_check_writable): call io_seek regardless of
-	  NEED_IO_SEEK_BETWEEN_RW.  [ruby-dev:24986]
-
-Sun Nov 28 15:57:58 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::Element#tag): not use block_given? for
-	  working with ruby 1.6 again.
-
-	* lib/rss/{0.9,2.0,trackback}.rb, lib/rss/maker/base.rb:
-	  undef -> remove_method for working with ruby 1.6 again.
-
-Sun Nov 28 15:51:40 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::NotSetError): added.
-
-	* lib/rss/maker/{1.0,0.9,2.0}.rb: changed RSS Maker to raise
-	  RSS::NotSetError if required values of maker.channel are not
-	  set. [ruby-talk:120061]
-
-	* test/rss/test_maker_{1.0,0.9,2.0}.rb: changed tests to check RSS
-	  Maker raises or not.
-
-Sun Nov 28 12:14:47 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regparse.c (fetch_token): fixed test failure on HP-UX ia64
-	  ([ruby-dev:24859]).
-
-Sun Nov 28 12:08:15 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regparse.c, test/ruby/test_regexp.rb: fixed problem with UTF-8
-	  characters that have U+00FE or invalid characters.
-
-Sun Nov 28 12:07:04 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regexec.c, test/ruby/test_regexp.rb: fixed segmentation fault
-	  ([ruby-dev:24887]).
-
-Sun Nov 28 12:05:48 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regcomp.c, regint.h: fixed PLATFORM_UNALIGNED_WORD_ACCESS
-	  problem ([ruby-dev:24802] and [ruby-core:3733])
-
-Sat Nov 27 23:43:39 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_initialize): [ruby-dev:24972]
-
-Sat Nov 27 21:43:39 2004  Tanaka Akira  <akr@m17n.org>
-
-	* io.c: avoid data lost with nonblocking fd and
-	  stdio buffering in sync mode.  [ruby-dev:24966]
-	  based on matz's patch [ruby-dev:24967]
-	  (io_fwrite): new primitive writing function which writes
-	  directly if sync mode.
-	  (rb_io_fwrite): wrapper for io_fwrite now.
-	  (io_write): call io_fwrite instead of rb_io_fwrite.
-
-Sat Nov 27 17:43:21 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/{0.9,1.0,2.0,trackback,xml-stylesheet}.rb: added
-	  #setup_maker.
-
-	* test/rss/test_setup_maker_*.rb: added tests for #setup_maker.
-
-	* lib/rss/maker/base.rb(RSS::Maker::Items#max_size=): supported
-	  output item size limitation.
-
-	* sample/rss/blend.rb: added sample for RSS Maker.
-
-Sat Nov 27 17:41:35 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/0.9.rb: supported RSS::Maker.make("0.91"). Now,
-	  "0.9" is just alias of "0.91."
-
-	* test/rss/test_maker_0.9.rb: make("0.9") -> maker("0.91").
-
-	* test/rss/test_to_s.rb: ditto.
-
-Sat Nov 27 17:21:30 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/list_description.rb: untabified.
-
-	* sample/rss/rss_recent.rb: ditto.
-
-Sat Nov 27 14:44:15 2004  Kent Sibilev  <ksibilev@bellsouth.net>
-
-	* lib/cgi/session.rb (CGI::Session::initialize): [ruby-core:03832]
-
-Sat Nov 27 09:41:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fread): old rb_io_fread with file closing checking.
-	  (rb_io_fread): wrapper for io_fread now.
-	  [ruby-dev:24964]
-
-Fri Nov 26 18:02:44 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: Tk.destroy uses TkWindow#epath
-
-	* ext/tk/lib/tk/image.rb: bug fix
-
-	* ext/tk/lib/tk/wm.rb: add 'iconphoto' method(Windows only)
-
-	* ext/tk/lib/tkextlib/*: some methods uses TkWindow#epath
-
-Fri Nov 26 14:29:39 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_initialize): uninitialized fd was checked to see open
-	  mode.  [ruby-dev:24963]
-
-	* io.c (rb_io_initialize): uninitialized fd was used.  [ruby-dev:24962]
-
-Fri Nov 26 13:49:06 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_initialize): should retrieve flags from copying file
-	  descriptor. [ruby-dev:24961]
-
-	* eval.c (method_missing): raise TypeError for classes do not
-	  have allocators.  [ruby-core:03752]
-
-	* lib/erb.rb: add RDoc by James Edward Gray II.  [ruby-core:03786]
-
-Fri Nov 26 13:29:02 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::look_for_directives_in): Break
-	  out of preprocessing when we find a :section: directive (previously cleared out the
-	  comment, but this apparently now generates an error in gsub!)
-
-Fri Nov 26 00:17:40 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_read): move StringValue() check before GetOpenFile().
-	  [ruby-dev:24959]
-
-Thu Nov 25 20:14:57 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/thwait.rb (ThreadsWait#join_nowait): abnormally terminated
-	  threads should be also processed.  [ruby-talk:121320]
-
-Thu Nov 25 18:06:37 2004  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in: AC_CHECK_SIZEOF(rlim_t) to include stdio.h to fix
-	  problem with autoconf 2.52 or earlier.
-	  revert AC_PREREQ to 2.50.
-	  [ruby-core:3809]
-
-Thu Nov 25 07:59:41 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: AC_PREREQ(2.53) [ruby-core:03800]
-
-	* io.c (read_all): stringify non-nil buffer argument, and always
-	  taint the result.  [ruby-dev:24955]
-
-Wed Nov 24 01:01:31 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_read): integer conversion should be prior to
-	  GetOpenFile().  [ruby-dev:24952]
-
-	* configure.in, io.c: cancel [ ruby-Patches-1074 ].
-
-Tue Nov 23 08:09:50 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/menu.rb: improve usability of TkOptionMenubutton
-
-Tue Nov 23 02:00:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_chown): integer conversion should be prior to
-	  GetOpenFile().  [ruby-dev:24949]
-
-Tue Nov 23 00:10:48 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_chown): integer conversion should be prior to
-	  GetOpenFile().  [ruby-dev:24947]
-
-	* file.c (rb_file_truncate): ditto.
-
-	* file.c (rb_file_s_truncate): ditto.
-
-	* dir.c (dir_seek): use NUM2OFFT().
-
-	* misc/ruby-mode.el (ruby-non-block-do-re): [ruby-core:03719]
-
-Mon Nov 22 22:33:02 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::parse_require): Don't use names
-	  of variables or constants when parsing 'require'
-
-Mon Nov 22 00:13:35 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_seek): should retrieve dir_data after NUM2INT().
-	  [ruby-dev:24941]
-
-Sat Nov 20 23:57:33 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/README (et al): Add a new directive, :section:, and
-	  change the output format to accommodate. :section: allows to to
-	  group together methods, attributes, constants, etc under
-	  headings in the output. If used, a table of contents is
-	  generated.
-
-Sat Nov 20 23:56:54 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/options.rb (Options::parse): Force --inline-source if
-	  --one-file option given
-
-Sat Nov 20 23:55:19 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_splice): should place index wrapping after
-	  possible modification.  [ruby-dev:24940]
-
-Sat Nov 20 23:25:12 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* io.c (rb_io_getline): f.gets("") did not work. [ruby-core:03771]
-
-	* test/ruby/test_io.rb (test_gets_rs): test it.
-
-Sat Nov 20 22:55:09 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* test/runner.rb (CROSS_COMPILING): need to require rbconfig.rb before
-	  using CROSS_COMPILNG.
-
-Sat Nov 20 20:42:42 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/depend: fix ripper.o dependency.
-
-Sat Nov 20 17:48:29 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (io_reopen): work around problem with Cygwin fseeko
-	  returning ESPIPE.
-
-Sat Nov 20 05:34:24 2004  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: original nkf.c rev:1.40
-
-	* ext/nkf/test.rb: add test for mime encode/decode
-
-Sat Nov 20 01:45:04 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* test/xmlrpc/test_webrick_server.rb: move `requrie "webrick/https"'
-	  into #setup_http_server method to avoid soap test errors.
-
-Sat Nov 20 01:37:34 2004  Johan Holmberg  <holmberg@iar.se>
-
-	* eval.c (error_print): nicer traceback at interrupt.
-	  [ruby-core:03774]
-
-Sat Nov 20 00:07:16 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): internal buffer should not be listed by
-	  ObjectSpace.each_object() by String#gsub.  [ruby-dev:24931]
-
-Fri Nov 19 22:44:43 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb: better support for -p/-x option.
-
-Fri Nov 19 17:46:56 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/0.9.rb (RSS::Maker::RSS09::Image#have_required_values):
-	  changed /rss/channel/image to be optional. [ruby-Bugs:1047]
-
-	* test/rss/test_maker_0.9.rb: added tests for the above.
-
-Fri Nov 19 17:18:17 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION): 0.1.0 -> 0.1.1.
-
-	* lib/rss: #to_s used #tag.
-
-	* test/rss/test_to_s.rb: added.
-
-	* lib/rss/maker.rb (RSS::Maker.make): changed API. It's not
-	  received modules which is used as the second argument.
-
-	* lib/rss/xml-stylesheet.rb (RSS::XMLStyleSheet#alternate):
-	  changed return value type which is not String but Boolean.
-
-	* lib/rss/2.0.rb (RSS::Rss::Channel#ttl): changed return value
-	  type which is not String but Integer.
-
-	* lib/rss/0.9.rb (RSS::Rss::Channel): <skipDays> has <day>s and
-	  <skipHours> has <hour>s.
-
-	* lib/rss/maker/0.9.rb (RSS::Maker::RSS09::Channel): ditto.
-
-	* lib/rss/0.9.rb (RSS::Rss::Channel::Item): <item> has <category>s.
-
-	* lib/rss/maker/2.0.rb (RSS::Maker::Rss20::Channel::Item): ditto.
-
-	* lib/rss/2.0.rb (RSS::Rss::Channel): <channel> has <category>s.
-
-	* lib/rss/maker/2.0.rb (RSS::Maker::RSS20::Channel): ditto.
-
-	* lib/rss/trackback.rb: parent element has <trackback:about>s.
-
-	* lib/rss/maker/trackback.rb: ditto.
-
-Fri Nov 19 11:10:16 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb: add support for directory name
-	  with -p/-x options.
-
-	* test/testunit/collector/test_dir.rb: ditto.
-
-	* lib/xmlrpc/datetime.rb (XMLRPC::DateTime#==): should use Array()
-	  instead of to_a.
-
-Fri Nov 19 10:32:36 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_s_set_completion_append_character):
-	  accept nil.  [ruby-core:03765]
-
-Fri Nov 19 01:20:22 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::FileStore::initialize): raise
-	  exception if data corresponding to session specified from the
-	  client does not exist.
-
-Fri Nov 19 00:59:31 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): internal buffer should not be listed by
-	  ObjectSpace.each_object().  [ruby-dev:24919]
-
-Thu Nov 18 23:42:36 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/depend: Never regenerate lib/ripper/core.rb
-	  automatically. [ruby-dev:24911]
-
-Thu Nov 18 20:47:24 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.[ch] (rb_w32_isatty): new function to replace MSVCRT's
-	  isatty because it never sets errno.
-
-Thu Nov 18 18:41:08 2004  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_stringchar.rb (test_bang): added.
-
-	* string.c (rb_str_upcase_bang, rb_str_capitalize_bang)
-	  (rb_str_swapcase_bang): missing rb_str_modify().
-
-Thu Nov 18 17:05:01 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_rest_arg): store rest args into invisible local variable
-	  in order to get rid of SEGV at ZSUPER.  [ruby-dev:24913]
-
-Thu Nov 18 15:39:52 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_f_getenv): prohibit for $SAFE=4. [ruby-dev:24908]
-
-Thu Nov 18 14:58:42 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/readline.c: check $SAFE.
-
-	* test/readline/test_readline.rb: added tests for readline.
-
-Thu Nov 18 00:21:15 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_getpgrp): prohibit for $SAFE=2.
-	  [ruby-dev:24899]
-
-	* process.c (get_pid): ditto.  [ruby-dev:24904]
-
-	* process.c (get_ppid): ditto.
-
-	* array.c (rb_ary_delete): defer rb_ary_modify() until actual
-	  modification.  [ruby-dev:24901]
-
-Thu Nov 18 10:10:14 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c, rubyio.h (rb_io_modenum_flags): exported.
-
-	* ext/stringio/stringio.c (strio_initialize): allow Fixnum as mode as
-	  well as IO.new does.  [ruby-dev:24896]
-
-Wed Nov 17 23:47:30 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_settracefunc.rb: added.  [ruby-dev:24884]
-
-Wed Nov 17 18:59:16 2004  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* process.c (proc_getrlimit, proc_setrlimit): add rb_secure(2) to
-	  methods of Process.{getrlimit,setrlimit}
-
-Wed Nov 17 13:56:57 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (newline_node): should not use FL_SET. [ruby-dev:24874]
-
-	* parse.y (string_content): should not use FL_UNSET.
-
-	* node.h (NODE_NEWLINE): remove unused bit to utilize flag field
-	  in nodes.
-
-Wed Nov 17 13:05:10 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (rb_push_glob): fix overrun.  [ruby-dev:24886]
-
-Wed Nov 17 11:48:17 2004  Michael Neumann  <mneumann@ruby-lang.org>
-
-	* lib/xmlrpc/parser.rb, test/xmlrpc/test_features.rb: fixed "assigning
-	  to constants" warnings
-
-Wed Nov 17 09:38:18 2004  Johan Holmberg  <holmberg@iar.se>
-
-	* re.c (rb_reg_initialize_m): should raise exception instead of
-	  compile error.  [ruby-core:03755]
-
-Wed Nov 17 03:42:45 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_splice): move rb_str_modify() after
-	  StringValue(), which may alter the receiver.  [ruby-dev:24878]
-
-	* error.c (rb_error_frozen): now raise RuntimeError instead of
-	  TypeError.
-
-Tue Nov 16 21:22:47 2004  Michael Neumann  <mneumann@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb (CGIServer): fixed bug when client sends
-	  "Content-typ: text/xml; ..."
-
-Tue Nov 16 23:45:07 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_divmod): protect float values from GC by
-	  assignment to local variables.  [ruby-dev:24873]
-
-Tue Nov 16 14:31:54 2004  Michael Neumann  <mneumann@ruby-lang.org>
-
-	* test/xmlrpc/*: imported and refactored original test cases.
-
-	* test/xmlrpc/test_webrick_server.rb, test/xmlrpc/webrick_testing.rb:
-	  added test case that starts up a WEBrick XML-RPC server and performs
-	  some tests on it (both http and https servers are started).
-
-	* lib/xmlrpc/create.rb (XMLWriter::each_installed_writer),
-	  lib/xmlrpc/parser.rb (XMLParser::each_installed_parser):
-	  added methods to simply original test cases
-
-	* lib/xmlrpc/parser.rb, lib/xmlrpc/datetime.rb: applied patch by
-	  MoonWolf <moonwolf@moonwolf.com> to allow parsing datetime.iso8601
-	  (e.g. 20041105T01:15:23Z).
-
-	* lib/xmlrpc/server.rb: fixed issue #998
-	  (http://rubyforge.org/tracker/?func=detail&atid=1700&aid=998&group_id=426)
-
-	* lib/xmlrpc/create.rb, lib/xmlrpc/utils.rb: when marshalling/loading
-	  user-defined data structures, use Class#allocate instead of defining
-	  an empty #initialize method. module XMLRPC::Marshallable is now only
-	  used for tagging.
-
-	* lib/xmlrpc/.document, lib/xmlrpc/README.rdoc: added howto
-
-Tue Nov 16 16:26:12 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32,wince}/setup.mak (-epilogue-): remove config.h and
-	  config.status to force updating them.
-
-Tue Nov 16 16:20:45 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): position was ignored when a
-	  buffer was passed.  http://www.yo.rim.or.jp/~nov/d/?date=20041116#p03
-
-Tue Nov 16 13:35:54 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner::options): add
-	  new option --exclude (-x) to skip some tests. [ruby-core:3363],
-	  [ruby-dev:24865]
-
-	* lib/test/unit/collector/dir.rb (Test::Unit::Collector::Dir.exclude):
-	  ditto.
-
-Tue Nov 16 11:19:07 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner::options): use
-	  Regexp conversion.
-
-Tue Nov 16 01:41:31 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_mod_check): frozen check should be separated.
-	  [ruby-core:3742]
-
-	* array.c (rb_ary_update): pedantic check to detect
-	  rb_ary_to_ary() to modify the receiver.  [ruby-dev:24861]
-
-Mon Nov 15 18:58:05 2004  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in: check rlim_t more portably. [ruby-core:3735]
-
-Mon Nov 15 11:50:32 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-special-char-p, ruby-parse-partial): handle
-	  operator symbols.  [ruby-talk:120177]
-
-Mon Nov 15 08:58:55 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_Proc): make proc as an alias to Proc.new.
-	  [ruby-dev:24848]
-
-Mon Nov 15 00:46:03 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): lambda{}.call(1) should raise exception.
-	  [ruby-talk:120253]
-
-Mon Nov 15 00:33:40 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_clear): avoid revealing NULL pointer.
-	  [ruby-dev:24766]
-
-	* string.c (str_gsub): add paranoid check. [ruby-dev:24827]
-
-	* string.c (str_mod_check): check frozen status as well.
-	  [ruby-dev:24801]
-
-Sun Nov 14 18:59:03 2004  Tanaka Akira  <akr@m17n.org>
-
-	* process.c (proc_getrlimit): new function for Process.getrlimit.
-	  (proc_setrlimit): new function for Process.setrlimit.
-	  [ruby-dev:24834]
-
-	* configure.in: check rlim_t and its size.  check setrlimit.
-
-	* ruby.h (NUM2ULL): new macro.
-
-Sun Nov 14 13:27:03 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pp.rb (PP#object_address_group): remove odd number of 'f'
-	  prefixed to negative address.
-
-Sun Nov 14 10:48:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Integer::gcd2): faster implementation by
-	  <erlercw@siu.edu>. [ruby-talk:120232]
-
-Sun Nov 14 08:46:33 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/logger/test_logger.rb: Logger just expects
-	  Logger#datetime_format to be used for Time#strftime independently of
-	  locale. [ruby-dev:24828]
-
-Fri Nov 12 17:32:07 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bcc32/README.bcc32, win32/README.win32: need bison instead of
-	  byacc.
-
-Fri Nov 12 15:15:06 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (ruby_options): now we cannot call rb_glob() before
-	  ruby_init(), so call rb_w32_cmdvector() at ruby_options().
-
-	* win32/win32.{c,h} (rb_w32_cmdvector): rename make_cmdvector() and
-	  export it.
-
-Fri Nov 12 14:08:01 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/event.rb: remove $LOADED_FEATURES trick
-
-	* ext/tk/lib/tk.rb: ditto
-
-Fri Nov 12 00:31:05 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/gdbm/gdbm.c (fgdbm_store): StringValue() may alter string
-	  pointer.  [ruby-dev:24783]
-
-Thu Nov 11 17:58:19 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (rb_glob): should have called rb_glob_caller().
-	  [ruby-dev:24773]
-
-Thu Nov 11 16:56:10 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_file.rb (test_truncate_wbuf): we want to test
-	  only File#truncate, not behavior of seek(2).
-
-Thu Nov 11 01:52:52 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (syserr_initialize): use stringified object.
-	  [ruby-dev:24768]
-
-Wed Nov 10 22:49:01 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (SimpleDelegator::dup): wrong number of
-	  arguments.
-
-	* lib/delegate.rb (DelegateClass::dup): ditto.
-
-Wed Nov 10 19:47:55 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (glob_helper): path is a string object now.
-
-Wed Nov 10 12:31:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT (Example): extconf.rb is indispensable now.
-
-Wed Nov 10 03:33:36 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fix SEGV when compiled with Tcl/Tk8.3.x
-	  or older
-
-	* ext/tk/lib/tkextlib/tile/style.rb: bug fix
-
-Tue Nov  9 22:24:07 2004  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf: original nkf.c rev:1.38
-
-	* ext/nkf/nkf.c: fix bug: can't parse long-name options
-
-	* ext/nkf/test.rb: fix bug: mime tests fail
-
-Tue Nov  9 14:27:18 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Officious): moved from DefaultList.
-
-Tue Nov  9 00:50:06 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/rdoc.rb: Change version numbering of RDoc and ri
-
-Tue Nov  9 01:05:04 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (rb_glob2): do not allocate buffer from heap to avoid
-	  memory leaks.  use string object for buffering instead.
-	  [ruby-dev:24738]
-
-	* dir.c (join_path): ditto.
-
-	* io.c (io_read): external input buffer may be modified even after
-	  rb_str_locktmp().  [ruby-dev:24735]
-
-	* dir.c (fnmatch): p or s may be NULL.  [ruby-dev:24749]
-
-Tue Nov  9 00:36:26 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/extservm.rb: add DRb::ExtServManager#uri=.
-	  [ruby-dev:24743]
-
-Mon Nov  8 22:20:19 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_class):
-	  Fix bug where parent class wasn't being detected if the
-	  child class was defined using the A::B notation.
-
-Mon Nov  8 00:14:13 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: add setup for mignw32 cross compiling.
-	  [ruby-talk:119413]
-
-Sun Nov  7 23:49:26 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bind-event methods accept multi substitution
-	  arguments.
-
-	* ext/tk/lib/tk/canvas.rb: ditto.
-
-	* ext/tk/lib/tk/canvastag.rb: ditto.
-
-	* ext/tk/lib/tk/text.rb: ditto.
-
-	* ext/tk/lib/tk/texttag.rb: ditto.
-
-	* ext/tk/lib/tkextlib: ditto.
-
-Sat Nov  6 20:40:16 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: rename WIN32OLE#ole_obj_help to
-	  WIN32OLE#ole_type. alias ole_obj_help to ole_type.
-
-	* ext/win32ole/tests/testWIN32OLE.rb: ditto.
-
-Sat Nov  6 11:18:59 2004  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (_parse): checks whether zone was given.
-
-Sat Nov  6 00:46:27 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_locktmp): check STR_TMPLOCK flag before
-	  locking.  [ruby-dev:24727]
-
-Fri Nov  5 19:07:16 2004  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf: follow CVS Head of original nkf.
-
-Fri Nov  5 18:12:42 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/scrollable.rb: divide Scrollable module into
-	  X_Scrollable and Y_Scrollable
-
-	* ext/tk/lib/tk/entry.rb: include X_Scrollable instead of Scrollable
-
-	* ext/tk/lib/tk/autoload.rb: define autoload for X_Scrollable and
-	  Y_Scrollable
-
-Fri Nov  5 16:05:32 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: TkComm._at() supprts both of "@x,y" and "@x"
-
-Fri Nov  5 13:22:58 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/text.rb: sorry. bug fix again.
-
-Fri Nov  5 13:17:54 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/text.rb: bug fix
-
-Fri Nov  5 08:52:48 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_mark): stricter GC stack check.
-
-Fri Nov  5 08:34:43 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): should have removed rb_str_unlocktmp(str).
-	  [ruby-dev:24708]
-
-	* ext/socket/socket.c (s_recvfrom): buffer modification check.
-	  [ruby-dev:24708]
-
-Thu Nov  4 23:54:21 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regexec.c, regparse.c, regint.h: fixed conflicts between
-	  vendor branch.
-
-Thu Nov  4 23:41:55 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* ascii.c, euc_jp.c, oniggnu.h, oniguruma.h, regcomp.c,
-	  regenc.c, regenc.h, regerror.c, regexec.c, reggnu.c,
-	  regint.h, regparse.c, regparse.h, sjis.c, utf8.c:
-	  imported Oni Guruma 3.4.0.
-
-	* parse.y, re.c: Now mbclen() takes unsigned char as
-	  its argument.
-
-Thu Nov  4 21:25:38 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): string modify check no longer based on
-	  tmplock.  [ruby-dev:24706]
-
-Thu Nov  4 21:13:48 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(typelib_file_from_typelib): search "win16"
-	  entry to get library path.
-
-	* ext/win32ole/win32ole.c(oletypelib_path): ditto.
-
-	* ext/win32ole/win32ole.c(ole_typedesc2val): add VT_LPWSTR, VT_LPSTR,
-	  VT_ERROR case.
-
-Thu Nov  4 15:02:14 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb: forget to initialize instance_variables
-	  of TkVarAccess objects
-
-Thu Nov  4 09:11:35 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_mark): enable GC stack checking.
-
-Thu Nov  4 03:11:33 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): lock strings temporarily.  [ruby-dev:24687]
-
-	* ext/socket/socket.c (s_recvfrom): tmplock input buffer.
-	  [ruby-dev:24705]
-
-Wed Nov  3 22:24:17 2004  Daigo Moriwaki  <techml@sgtpepper.net>
-
-	* lib/webrick/httpauth/digestauth.rb: use Base64.encode64 to
-	  avoid warnings.
-
-Wed Nov  3 17:19:59 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_uniq_bang): do not push frozen string from hash
-	  table.  [ruby-dev:24695]
-
-	* array.c (rb_ary_and): ditto.
-
-	* array.c (rb_ary_or): ditto.
-
-Wed Nov  3 17:02:48 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: support to use different Tcl commands between
-	  configure and configinfo
-
-	* ext/tk/lib/font.rb: ditto.
-
-	* ext/tk/lib/itemconfig.rb: support to use different Tcl commands
-	  between item_configure and item_configinfo
-
-	* ext/tk/lib/itemfont.rb: ditto.
-
-	* ext/tk/extconf.rb: install SUPPORT_STATUS
-
-	* ext/tk/lib/tkextlib: some bug fixes (see ext/tk/ChangeLog.tkextlib)
-
-Wed Nov  3 15:38:28 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/*.rb: removed tab width configuration headers.
-
-	* test/rss/test_maker_{0.9,1.0}.rb: sort -> do_sort.
-
-	* lib/rss/maker/*.rb: changed API to RSS version independence.
-
-	* lib/rss/maker/base.rb
-	  (RSS::Maker::XMLStyleSheets::XMLStyleSheet): checked required
-	  (pseudo) attributes.
-
-	* lib/rss/maker/base.rb (RSS::Maker::Items): sort -> do_sort.
-
-	* lib/rss/rss.rb (RSS::BaseModel.install_date_element): avoided
-	  warning.
-
-	* lib/rss/0.9.rb (RSS::Rss#textinput): added convenience method.
-
-Tue Nov  2 16:35:57 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/enumerator/enumerator.c (each_cons_i): pass copy of an
-	  internal consequent array.  [ruby-talk:118691]
-
-Tue Nov  2 14:54:02 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (pipe_open): need to set cmd if argc == 0 (win32).
-
-Tue Nov  2 01:20:09 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (pipe_open): IO.popen should take array as 1st argument for
-	  a command line.  [ruby-dev:24678]
-
-	* eval.c (proc_invoke): nail down dyna_var node when Proc object
-	  or continuation is created.  [ruby-dev:24671]
-
-	* io.c (rb_io_s_popen): do not expand argv array.  [ruby-dev:24670]
-
-Mon Nov  1 22:25:56 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb: changed xml-stylesheet's API of RSS Maker
-	  like to item's one.
-
-	* lib/rss/xml-stylesheet.rb (RSS::XMLStyleSheet#guess_type): fixed
-	  regular expression bug.
-
-	* test/rss/test_maker_xml-stylesheet.rb: updated tests for
-	  xml-stylesheet.
-
-Mon Nov  1 13:59:28 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb (MANIFEST): do not use anymore, use extconf.rb instead.
-
-	* ext/enumerator/extconf.rb, ext/fcntl/extconf.rb,
-	  ext/stringio/extconf.rb: added.
-
-	* MANIFEST, ext/**/MANIFEST: removed.
-
-	* README.EXT, README.EXT.ja: remove MANIFEST stuff.
-
-Mon Nov  1 11:52:18 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (pipe_open): avoid conflict of variable name. [ruby-dev:24662]
-
-Mon Nov  1 11:46:19 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* process.c (rb_f_exec): should check whether prog is NULL.
-
-Mon Nov  1 09:37:19 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker.rb: added entry point of RSS Maker.
-
-Mon Nov  1 03:14:14 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_get_method_body): store ICLASS in the cache.
-	  [ruby-core:03672]
-
-	* eval.c (rb_provided): should return true for loading library
-	  too for autoloading.  [ruby-core:03655]
-
-Mon Nov  1 01:14:52 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_open): create copy of popen specifier.  [ruby-dev:24656]
-
-	* string.c (rb_str_locktmp): lock string temporarily.
-
-	* string.c (str_independent): add tmplock check.
-
-	* io.c (io_write): lock output string temporarily.
-	  [ruby-dev:24649]
-
-	* io.c (io_write): use rb_str_locktmp().
-
-	* io.c (read_all): ditto.
-
-Sun Oct 31 23:37:00 2004  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* process.c: on NetBSD don't use setruid() and setrgid().
-
-Sun Oct 31 23:12:10 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/*.rb: added RSS Maker.
-
-	* test/rss/test_maker_*.rb: added tests for RSS Maker.
-
-Sun Oct 31 16:58:12 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE.codepage, WIN32OLE.codepage=.
-
-	* ext/win32ole/tests/testWIN32OLE.rb: ditto.
-
-Sun Oct 31 14:35:26 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: add "\075?UTF-8?Q?" for Gmail.
-
-Sun Oct 31 14:18:56 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: emit lexer-event values to the parser
-	  (still incomplete).
-
-Sat Oct 30 15:24:41 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_TYPELIB class. add
-	  WIN32OLE#ole_typelib method.
-
-	* ext/win32ole/tests/testOLETYPELIB.rb: add WIN32OLE_TYPELIB class.
-
-Sat Oct 30 06:53:24 2004  Peter Vanbroekhoven  <peter.vanbroekhoven@cs.kuleuven.ac.be>
-
-	* eval.c (rb_eval): NODE_XSTR should pass copy of literal string.
-
-Sat Oct 30 00:19:40 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_update): a[n,m]=nil no longer works as element
-	  deletion.
-
-	* enum.c (enum_sort_by): protect continuation jump in.
-	  [ruby-dev:24642]
-
-	* eval.c (rb_eval), gc.c (gc_mark_children), node.h (NEW_ALIAS,
-	  NEW_VALIAS), parse.y (fitem): allow dynamic symbols to
-	  NODE_UNDEF and NODE_ALIAS.
-
-Fri Oct 29 21:27:51 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_check_initialized): new function to check uninitialized
-	  object.  [ruby-talk:118234]
-
-	* file.c (rb_file_path), io.c (rb_io_closed): check if initialized.
-
-Fri Oct 29 19:05:33 2004  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf: follow nkf2.0.
-
-Fri Oct 29 17:18:22 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (ripper_s_allocate): add prototype for Microsoft compiler.
-
-	* range.c (range_step, range_each): need cast.
-
-Fri Oct 29 16:34:19 2004  Daiki Ueno  <ueno@unixuser.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): Parse the rest of the
-	  line after opening heredoc identifier.  [ruby-dev:24635]
-
-Fri Oct 29 11:35:04 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_parser_append_print, rb_parser_while_loop): body node
-	  can be empty.  [ruby-dev:24628]
-
-Fri Oct 29 10:00:30 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): forget to free some memory chunks.
-	  [ruby-core:03611]
-
-	* eval.c (ruby_cleanup): ruby_finalize_1 may cause exception,
-	  should be wrapped by PUSH_TAG/POP_TAG().  [ruby-dev:24627]
-
-Thu Oct 28 08:42:02 2004  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (argf_forward): use ANSI style.
-	  (argf_read): call argf_forward with argv argument.
-	  [ruby-dev:24624]
-
-Wed Oct 27 09:17:30 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_gsub): use a string object for exception safeness.
-	  [ruby-dev:24601]
-
-Wed Oct 27 07:38:55 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* node.h (NODE_TYPESHIFT): allow 4 more bits for line numbers.
-	  [ruby-talk:117841]
-
-	* ruby.h (FL_ABLE): nodes are not subject for flag operations.
-
-	* io.c (ARGF_FORWARD): should have specified argv explicitly,
-	  since we no longer have frame->argv saved.  [ruby-dev:24602]
-
-Tue Oct 26 23:30:39 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/code_objects.rb (RDoc::Context::add_class_or_module):
-	  Restore correct :nopdoc: behavior with nested classes and modules.
-
-Tue Oct 26 18:21:29 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (RESIZE_CAPA): check string attribute before modifying
-	  capacity member of string structure.  [ruby-dev:24594]
-
-Tue Oct 26 11:33:26 2004  David G. Andersen  <dga@lcs.mit.edu>
-
-	* ext/zlib/zlib.c (gzreader_gets): use memchr() to to gain
-	  performance.  [ruby-talk:117701]
-
-Tue Oct 26 10:56:55 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): raise ArgumentError for extra
-	  arguments, unless (digit)$ style used.
-
-Mon Oct 25 18:35:39 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (isUNCRoot): should check NUL after '.'.
-	  [ruby-dev:24590]
-
-	* win32/win32.c (isUNCRoot): fixed buffer overrun.
-
-Mon Oct 25 08:03:26 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (get_backtrace): ignore illegal backtrace.  [ruby-dev:24587]
-
-Sun Oct 24 00:40:50 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_load, search_required, rb_require_safe, rb_require): use
-	  frozen shared string to avoid outside modification.  [ruby-dev:24580]
-
-Sat Oct 23 23:40:34 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_fptr_finalize): leave stdin/stdout/stderr open in
-	  interpreter termination.  [ruby-dev:24579]
-
-Sat Oct 23 22:18:32 2004  Guy Decoux  <ts@moulon.inra.fr>
-
-	* eval.c (frame_free): Guy Decoux solved the leak problem.
-	  Thanks.  [ruby-core:03549]
-
-Sat Oct 23 00:20:55 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_append_input): clear klass for z->input
-	  to avoid potential vulnerability.
-
-	* ext/zlib/zlib.c (zstream_run): always use zstream_append_input()
-	  to avoid SEGV.  [ruby-dev:24568]
-
-Fri Oct 22 12:02:28 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_alias): was warning for wrong condition.
-	  [ruby-dev:24565]
-
-Fri Oct 22 10:36:37 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest#meta_vars):
-	  should check if path_info is not nil.
-
-Fri Oct 22 00:22:31 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_shift_buffer): should restore class
-	  field of a buffer.  [ruby-dev:24562]
-
-Fri Oct 22 00:20:33 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_include): should not treat char as negative value.
-	  [ruby-dev:24558]
-
-Thu Oct 21 21:32:30 2004  IWATSUKI Hiroyuki  <don@na.rim.or.jp>
-
-	* lib/pstore.rb (PStore#transaction): Use the empty content when a
-	  file is not found.  [ruby-dev:24561]
-
-Thu Oct 21 19:06:15 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpresponse.rb (WEBrick::HTTPResponse#send_body_io):
-	  ensure to close @body. (http://bugs.debian.org/277520)
-
-Thu Oct 21 13:11:31 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (pipe_open): variable name "fpw" is conflicted.
-
-Thu Oct 21 00:36:41 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_alias): should warn on method discarding.
-	  [ruby-dev:24546]
-
-	* ext/zlib/zlib.c (zstream_expand_buffer_into): hide internal
-	  string buffer by clearing klass.  [ruby-dev:24548]
-
-	* parse.y (lex_getline): should not touch ruby_debug_lines if
-	  RIPPER is defined.  [ruby-dev:24547]
-
-Wed Oct 20 19:45:13 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): 	reentrant check.  [ruby-dev:24432]
-
-Wed Oct 20 12:42:53 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline): rs modification check should not interfere
-	  in the loop.
-
-Wed Oct 20 10:31:33 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (lex_getline): should update ruby_debug_lines.
-
-Wed Oct 20 04:17:55 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/dbm.c (fdbm_delete_if): should check if deleting element
-	  is a string.  [ruby-dev:24490]
-
-	* ext/sdbm/init.c (fsdbm_delete_if): ditto.
-
-Wed Oct 20 01:37:18 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_times): Array#* should return an instance of
-	  the class of right operand.  [ruby-dev:24526]
-
-	* ext/zlib/zlib.c (zstream_detach_buffer): should not expose
-	  class-less object to Ruby world. [ruby-dev:24530]
-
-	* eval.c (proc_dup): provide Proc#dup as well.  [ruby-talk:116915]
-
-	* eval.c (ruby_exec): stack marking position may be higher than
-	  expected.  thanks to Guy Decoux.  [ruby-core:03527]
-
-Wed Oct 20 00:25:41 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (search_required): required name must not be changed before
-	  loading.  [ruby-dev:24492]
-
-Tue Oct 19 23:59:46 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_require_safe): provide the feature after loaded.
-	  [ruby-list:40085]
-
-Tue Oct 19 22:43:12 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_attr): If
-	  we come across 'attr' in a context where it isn't
-	  followed by a symbol, just issue a warning.
-
-Tue Oct 19 20:32:50 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole.c(ole_invoke): retrieve the result value when
-	  retrying the IDispatch::invoke.
-
-Tue Oct 19 17:24:11 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): block string buffer modification during
-	  rb_io_fread() by freezing it temporarily. [ruby-dev:24479]
-
-	* dir.c (rb_push_glob): block call at once the end of method.
-	  [ruby-dev:24487]
-
-	* ext/enumerator/enumerator.c (enum_each_slice): remove
-	  rb_gc_force_recycle() to prevent potential SEGV.
-	  [ruby-dev:24499]
-
-	* ext/zlib/zlib.c (zstream_expand_buffer): hide internal string
-	  buffer by clearing klass.  [ruby-dev:24510]
-
-Tue Oct 19 08:47:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_upto): method result must be checked.  [ruby-dev:24504]
-
-	* eval.c (error_print): ditto.  [ruby-dev:24519]
-
-Mon Oct 18 23:37:05 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_object0): check inheritance by the internal function.
-	  [ruby-dev:24515]
-
-Mon Oct 18 11:29:32 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_flags_mode, rb_io_mode_flags): distinguish whether file
-	  not existing is created.  [ruby-dev:24505]
-
-Mon Oct 18 07:26:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_truncate): discard read buffer before truncation.
-	  [ruby-dev:24197]
-
-Mon Oct 18 01:56:03 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest#initialize):
-	  initial value of accpet-* should be array.
-
-Mon Oct 18 00:42:45 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyaname): protocol string
-	  might be altered.  [ruby-dev:24503]
-
-	* string.c (rb_str_upto): check if return value from succ is a
-	  string.  [ruby-dev:24504]
-
-Sun Oct 17 23:03:48 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/timer.rb: TkTimer#start and restart accept a block
-
-Sun Oct 17 12:53:46 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fole_func_methods): correct argument mismatch.
-	* ext/win32ole/win32ole.c (fole_get_methods): ditto.
-	* ext/win32ole/win32ole.c (fole_put_methods): ditto.
-	* ext/win32ole/tests/testWIN32OLE.rb: add test for WIN32OLE#ole_func_methods
-	  WIN32OLE#ole_get_methods, WIN32OLE#ole_put_methods
-
-Sat Oct 16 14:45:28 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/0.9.rb (RSS::Rss#to_s): removed garbage.
-
-Sat Oct 16 13:42:49 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/: untabified.
-	* test/rss/: untabified.
-	* lib/rss/0.9.rb (RSS::Rss#to_s): inent -> indent.
-
-Sat Oct 16 13:34:56 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss: supported prety print.
-	* test/rss/test_1.0.rb: added test for calculating default indent size.
-
-Sat Oct 16 10:56:36 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): install-rb is needed for statically
-	  linked extensions.  [ruby-dev:24491]
-
-Fri Oct 15 18:07:08 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509store.c
-	  (ossl_x509stctx_initialize): setup OpenSSL::X509::StoreContext with
-	  ossl_x509stctx_* functions instead of X509_STORE_CTX_*.
-	  (ossl_x509store_set_time): add OpenSSL::X509::Store#time=.
-	  (ossl_x509stctx_set_time): add OpenSSL::X509::StoreContext#time=.
-
-	* test/openssl/ossl_x509store.rb: test certificate validity times.
-
-Fri Oct 15 18:04:35 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/timer.rb: TkTimer.new(interval, loop){ ... } is
-	  acceptable. Add TkTimer.start ( == new + start ).
-
-Fri Oct 15 12:43:09 2004  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (Init_stack): make prototype declaration consistent with
-	  the definition in gc.c.
-
-Thu Oct 14 13:33:59 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: added link to Tutorial.
-
-Tue Oct 12 21:22:50 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/config.rb:
-	  add WEBrick::Config::FileHandler[:AcceptableLanguages].
-
-	* lib/webrick/httpservlet/filehandler.rb
-	  (WEBrick::HTTPServlet::FileHandler#set_filename): search files
-	  having suffix of language-name which Accept-Language header field
-	  includes if :AcceptableLanguages options is present.
-
-	* lib/webrick/httpservlet/filehandler.rb
-	  (WEBrick::HTTPServlet::FileHandler#get_servlet): new method to
-	  search servlet correspond to the suffix of filename.
-
-	* lib/webrick/httprequest.rb: add attributes access methods: accept,
-	  accept_charset, accept_encoding, accept_language, content_length
-	  and content_type.
-
-	* lib/webrick/httpresponse.rb: add attribute access methods:
-	  content_length, content_length=, content_type and content_type=.
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils.mime_types):
-	  use the second suffix to detect media type. (the first suffix
-	  may be a language name.)
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils.parse_qvalues):
-	  add method to parse Accept header field. it returns an Array of
-	  values sorted by the qvalues.
-
-Tue Oct 12 15:05:32 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (MODE_BINMODE, MODE_BINARY): fixed reversed condition.
-
-Mon Oct 11 17:51:34 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_popen): get mode string via rb_io_flags_mode() to
-	  avoid mode string modification.  [ruby-dev:24454]
-
-	* io.c (rb_io_getline_fast): should take delim as unsigned char to
-	  distinguish EOF and '\377'.  [ruby-dev:24460]
-
-	* io.c (rb_io_getline): add check for RS modification.
-	  [ruby-dev:24461]
-
-	* enum.c (enum_sort_by): use qsort() directly instead using
-	  rb_iterate().  [ruby-dev:24462]
-
-	* enum.c (enum_each_with_index): remove rb_gc_force_recycle() to
-	  prevent access to recycled object (via continuation for
-	  example).  [ruby-dev:24463]
-
-Mon Oct 11 13:48:20 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/*: untabify
-
-Sun Oct 10 12:32:08 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::parse_require): Allow 'require'
-	  to be used as a variable name
-
-Sun Oct 10 02:49:14 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/lib/ripper/filter.rb: require ripper/tokenizer.
-
-	* ext/ripper/lib/ripper/filter.rb (parse): argument is optional.
-
-Sun Oct 10 02:43:13 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: \n between two comments disappeared.
-
-Sat Oct  9 21:23:37 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/converter.rb: changed to try to use Iconv for default
-	  conversion.
-
-	* lib/rss/rss.rb: 0.0.9 -> 0.1.0.
-
-Sat Oct  9 19:50:36 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline): should not treat char as negative value.
-	  [ruby-dev:24460]
-
-Sat Oct  9 00:25:39 2004  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (rb_io_fread): rb_thread_wait_fd() was lost.
-	  [ruby-dev:24457]
-
-Fri Oct  8 21:36:56 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_traverse): return value of Dir.entries is
-	  reliable. (pass $SAFE=1)
-
-	* lib/fileutils.rb (remove_dir): return value of Dir.foreach is
-	  reliable. (pass $SAFE=1)
-
-Fri Oct  8 09:49:32 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): pointer modification check before each
-	  iteration.  [ruby-dev:24445]
-
-Fri Oct  8 01:13:05 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/optiondb.rb: make it more secure
-
-Thu Oct  7 23:47:57 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/scrollbar.rb: When 'set' operation, a scrollbar
-	  cannot propagate view port information from the source widget
-	  (that calls 'set') to other assigned widgets.
-
-Thu Oct  7 17:36:25 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: When CHILDKILLED and so on, Tk.errorCode returns
-	  a Fixnum for 2nd element (it's pid) of the return value.
-
-Thu Oct  7 12:55:04 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_read): should freeze buffer before thread context
-	  switch. [ruby-dev:24442]
-
-	* pack.c (pack_unpack): string conversion should at the top of the
-	  method.  [ruby-dev:24439]
-
-	* io.c (io_read): buffer should be frozen only after the length
-	  check.  [ruby-dev:24440]
-
-Thu Oct  7 02:56:43 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c: use FMODE_APPEND.
-
-Thu Oct  7 01:05:33 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add Tk.errorInfo and Tk.errorCode
-
-Thu Oct  7 00:08:37 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_sysopen): preserve path in the buffer allocated by
-	  ALLOCA_N() to prevent modification.  [ruby-dev:24438]
-
-Wed Oct  6 09:21:00 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_mode_flags): preserve append mode flag.
-	  [ruby-dev:24436]
-
-	* io.c (rb_io_modenum_mode): do not use external output buffer.
-
-	* string.c (rb_str_justify): differ pointer retrieval to prevent
-	  padding string modification.  [ruby-dev:24434]
-
-	* range.c (range_each_func): allow func to terminate loop by
-	  returning RANGE_EACH_BREAK.
-
-	* range.c (member_i): use RANGE_EACH_BREAK. [ruby-talk:114959]
-
-Tue Oct  5 09:53:22 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_fopen): mode string copy at the lowest level.
-
-	* io.c (rb_io_flags_mode): requires output buffer no more.  no
-	  allocation needed.
-
-	* array.c (rb_ary_index): takes a block to compare items in an
-	  array.  [ruby-talk:113069] [Ruby2]
-
-	* array.c (rb_ary_rindex): ditto.
-
-Mon Oct  4 14:03:40 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_file_open_internal, rb_io_reopen): fname might be altered
-	  while GC.  [ruby-dev:24408]
-
-Mon Oct  4 12:53:45 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/optiondb.rb: support definition of command
-	  resources on widgets
-
-	* ext/tk/lib/tk/image.rb: bug fix
-
-Sun Oct  3 21:16:05 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (TEXT_REGEXP): allow 8-bit characters for the german
-	  version of Microsoft Exchange Server.
-
-	* lib/net/imap.rb (RTEXT_REGEXP): ditto.
-
-	* lib/net/imap.rb (CTEXT_REGEXP): ditto.
-
-Sat Oct  2 20:34:05 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (local_vars): moved to struct parser_params.
-	  [ruby-dev:24391]
-
-	* parser.y (stmts): remove suspicious NODE_BEGIN.  [ruby-dev:24390]
-
-	* node.h (NEW_DVAR): extra semicolon.
-
-Sat Oct  2 00:42:20 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_byte): retrieve pointer from string value for each
-	  time.  [ruby-dev:24404]
-
-	* marshal.c (r_bytes0): ditto.
-
-	* enum.c (sort_by_i): re-entrance check added.  [ruby-dev:24399]
-
-	* io.c (io_read): should freeze all reading buffer.
-	  [ruby-dev:24400]
-
-	* string.c (rb_str_sum): should use bignums when bits is greater
-	  than or equals to sizeof(long)*CHAR_BITS. [ruby-dev:24395]
-
-	* eval.c (specific_eval): defer pointer retrieval to prevent
-	  unsafe sourcefile string modification.  [ruby-dev:24382]
-
-	* string.c (rb_str_sum): wrong cast caused wrong result.
-	  [ruby-dev:24385]
-
-	* enum.c (enum_sort_by): hide temporary array from
-	  ObjectSpace.each_object.  [ruby-dev:24386]
-
-	* string.c (rb_str_sum): check was done with false pointer.
-	  [ruby-dev:24383]
-
-	* string.c (rb_str_sum): string may be altered.  [ruby-dev:24381]
-
-Fri Oct  1 11:40:14 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_eval): defer pointer retrieval to prevent unsafe
-	  sourcefile string modification.  [ruby-dev:24373]
-
-	* io.c (io_read): block string buffer modification during
-	  rb_io_fread() by freezing it temporarily. [ruby-dev:24366]
-
-	* io.c (rb_io_s_popen): mode argument may be altered.
-	  [ruby-dev:24375]
-
-	* file.c (rb_file_s_basename): ext argument may be altered.
-	  [ruby-dev:24377]
-
-	* enum.c (enum_sort_by): use NODE instead of 2 element arrays.
-	  [ruby-dev:24378]
-
-	* string.c (rb_str_chomp_bang): StringValue() may change the
-	  receiver.  [ruby-dev:24371]
-
-Fri Oct  1 11:25:20 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/grid.rb: revive TkGrid.grid
-
-	* ext/tk/lib/tk/pack.rb: revive TkPack.pack
-
-	* ext/tk/lib/tk/place.rb: revive TkPlace.place
-
-Thu Sep 30 00:50:44 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_init): bug fix
-
-	* ext/tk/tkutil.c (get_eval_string_core): accept a Regexp object
-
-	* ext/tk/lib/multi-tk.rb: fix bug on 'exit' operation
-
-	* ext/tk/lib/tk/text.rb: 'tksearch' accepts a Regexp object as a
-	  matting pattern argument
-
-Wed Sep 29 10:58:07 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (sort_by_i): internally used object must not be changed
-	  outside.  [ruby-dev:24368]
-
-Mon Sep 27 21:25:12 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_call0): invoke finalizers periodically.
-
-	* gc.c (gc_sweep): defer running finalizers.  [ruby-dev:24354]
-
-	* gc.c (rb_gc_finalize_deferred): run deferred finalizers.
-
-Mon Sep 27 15:01:59 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: missing ';'.
-
-Mon Sep 27 13:46:45 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h, struct.c (rb_struct_s_members, rb_struct_members): public
-	  accessors.  [ruby-dev:24342]
-
-	* marshal.c (w_object, r_object0): use accessors.
-
-Mon Sep 27 09:14:03 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_delete): comparison may change the capacity.
-	  [ruby-dev:24348]
-
-	* array.c (rb_ary_fill): fill should honor length argument.
-	  [ruby-dev:24346]
-
-	* array.c (rb_ary_replace): should not use ptr from shared array.
-	  [ruby-dev:24345]
-
-	* ext/socket/socket.c (s_accept): don't retry for EWOULDBLOCK.
-	  [ruby-talk:113807]
-
-Sun Sep 26 08:05:10 2004  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: provides {Time,Date,DateTime}#to_{time,date,datetime}.
-
-	* sample/cal.rb: uses getoptlong instead of getopts.
-
-Sat Sep 25 18:39:22 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (flatten): element size might change during comparison.
-	  [ruby-dev:24343]
-
-Sat Sep 25 01:52:49 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_members): wrong call of struct_members.
-	  [ruby-dev:24333]
-
-Fri Sep 24 16:09:42 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): propagate DVAR_DONT_RECYCLE on termination
-	  to avoid double call to rb_gc_force_recycle(). [ruby-dev:24311]
-
-Fri Sep 24 08:29:45 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (rb_parser_append_print): should handle prelude.
-	  [llama@u01.gate0]
-
-	* parse.y (rb_parser_while_loop): ditto.
-
-	* array.c (rb_ary_subseq): original object might be modified after
-	  sharing data creation.  [ruby-dev:24327]
-
-	* array.c (rb_ary_replace): ditto.
-
-	* array.c (ary_make_shared): freeze shared array. [ruby-dev:24325]
-
-	* struct.c (struct_members): always check struct size and size of
-	  members list in the class.  [ruby-dev:24320]
-
-Thu Sep 23 19:48:14 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/Makefile.dev: removed.
-
-	* ext/ripper/ripper.rb.in: moved to lib/ripper/core.rb.in.
-
-	* ext/ripper/lib/ripper/core.rb: new file.
-
-	* ext/ripper/lib/ripper/core.rb.in: new file.
-
-	* ext/ripper/tools/generate-ripper_rb.rb: change comment.
-
-	* test/ripper/*.rb: on__scan event removed.
-
-	* test/ripper/*.rb: event name is changed: on__XXX -> on_XXX.
-
-Thu Sep 23 09:29:14 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_sub_bang): check if string is not modified
-	  during iteration.  [ruby-dev:24315]
-
-	* hash.c (rb_hash_rehash): replace st_foreach() by its deep
-	  checking counterpart.  [ruby-dev:24310]
-
-Wed Sep 22 14:21:54 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: on__scan event removed.
-
-	* parse.y [ripper]: event name is changed: on__XXX -> on_XXX.
-
-	* ext/ripper/eventids2.c: ditto.
-
-	* ext/ripper/ripper.rb.in: ditto.
-
-	* ext/ripper/lib/ripper.rb: sync with ripper.rb.in.
-
-	* ext/ripper/lib/ripper/tokenizer: ditto.
-
-	* ext/ripper/lib/ripper/filter: new file.
-
-	* sample/ripper/colorize.rb: new file.
-
-	* sample/ripper/strip-comment.rb: new file.
-
-Wed Sep 22 13:50:49 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (hash_alloc): was using tbl pointer without
-	  initialization.
-
-Wed Sep 22 13:38:12 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_rehash): add iteration check.  [ruby-dev:24301]
-
-	* st.c (st_foreach): add deep check.
-
-	* hash.c (rb_hash_fetch): returns KeyError instead of IndexError.
-
-	* hash.c (env_fetch): ditto.
-
-Wed Sep 22 13:02:02 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_call_handler): workaround for Ctrl-C.
-
-Wed Sep 22 09:04:41 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: remove global variables ruby_eval_tree and
-	  ruby_eval_tree_begin.
-
-	* array.c (rb_ary_collect_bang): element size might change during
-	  comparison.  [ruby-dev:24300]
-
-	* array.c (rb_ary_reject_bang): ditto. [ruby-dev:24300]
-
-	* array.c (rb_ary_eql): ditto. [ruby-dev:24300]
-
-Wed Sep 22 00:11:12 2004  Dave Thomas  <dave@pragprog.com>
-
-	* process.c: Add documentation for fork()
-
-Tue Sep 21 18:29:49 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_uniq_bang): element size might change during
-	  comparison.  [ruby-dev:24298]
-
-Mon Sep 20 17:46:51 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/lib/ripper/tokenizer.rb: fix typo.
-
-Mon Sep 20 17:38:43 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ripper/test_scanner_events.rb: tokens must be reordered.
-
-	* ext/ripper/lib/ripper/tokenizer.rb: ditto.
-
-Mon Sep 20 16:58:16 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: do not delay dispatching.
-
-	* ext/ripper/lib/ripper/tokenizer.rb: sort tokens by right order.
-
-Mon Sep 20 15:17:47 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/lib/ripper/tokenizer.rb: new file.
-
-Mon Sep 20 15:13:52 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ripper/test_scanner_events.rb: test #lineno and #column.
-
-Mon Sep 20 14:50:17 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: delayed heredocument events should be
-	  dispatched after EOF.
-
-Mon Sep 20 14:39:42 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: adjust lineno and columns for multi-line
-	  strings.
-
-	* parse.y [ripper]: delay heredocument events until seeing
-	  end-of-line.
-
-	* parse.y [ripper]: event on__heredoc_contentn ->
-	  on__tstring_content.
-
-	* ext/ripper/eventids2.c: ditto.
-
-	* ext/ripper/lib/ripper.rb: sync with eventids2.c.
-
-	* test/ripper/test_scanner_events.rb: test it.
-
-	* ext/ripper/tools/generate-ripper_rb.rb: show basename of input.
-
-	* ext/ripper/Makefile.dev: support objdir build.
-
-Mon Sep 20 13:22:55 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: remove Ripper#pos.
-
-	* parse.y [ripper]: Ripper#column should return the column of the
-	  current token.
-
-Mon Sep 20 12:02:41 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: unify old_lex_p and token_head.
-
-	* test/ripper/test_scanner_events.rb: now \r\n is saved correctly.
-
-	* parse.y: new macro lex_goto_eol() for next change.
-
-Mon Sep 20 11:01:55 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: adjust line number for heredoc.  [ruby-dev:24272]
-
-Mon Sep 20 04:49:22 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/ripper.rb.in: new const Ripper::PARSER_EVENT_TABLE.
-
-	* ext/ripper/ripper.rb.in: new const Ripper::SCANNER_EVENT_TABLE.
-
-	* ext/ripper/lib/ripper.rb: sync with ripper.rb.in.
-
-Mon Sep 20 04:13:00 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ripper/test_scanner_events.rb: test spaces before heredoc
-	  mark.
-
-Mon Sep 20 03:46:54 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: spaces before heredoc marker was lost.
-	  [ruby-dev:24272]
-
-	* keywords: rb_reserved_word() should be defined only in ruby
-	  core.  [ruby-dev:24272]
-
-	* lex.c: sync with keywords.
-
-	* ext/ripper/ripper.rb.in (parse): fix typo.
-
-	* ext/ripper/lib/ripper.rb: sync with ripper.rb.in.
-
-Mon Sep 20 03:37:59 2004  Tanaka Akira  <akr@m17n.org>
-
-	* ext/zlib/zlib.c (gzfile_read_raw): call readpartial at first.
-	  (Zlib::GzipReader#readpartial): new method.
-
-Mon Sep 20 00:24:19 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_sort_by): do not use qsort directly.  use
-	  rb_ary_sort_bang() instead.  [ruby-dev:24291]
-
-	* enum.c (enum_sort_by): pedantic type check added.
-	  [ruby-dev:24291]
-
-	* hash.c (rb_hash_foreach_iter): check iter_lev after each
-	  iteration.  [ruby-dev:24289]
-
-	* array.c (rb_ary_and): element size might change during
-	  comparison.  [ruby-dev:24290]
-
-	* array.c (rb_ary_or): ditto. [ruby-dev:24292]
-
-	* array.c (rb_ary_equal): wrong fix. [ruby-dev:24286]
-
-Sat Sep 18 15:02:22 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_equal): element size might change during
-	  comparison.  [ruby-dev:24254]
-
-	* array.c (rb_ary_diff): ditto. [ruby-dev:24274]
-
-	* array.c (rb_ary_select): ditto. [ruby-dev:24278]
-
-	* array.c (rb_ary_delete): ditto. [ruby-dev:24283]
-
-	* array.c (rb_ary_rindex): ditto. [ruby-dev:24275]
-
-	* array.c (rb_ary_initialize): element size might change during
-	  initializing block.  [ruby-dev:24284]
-
-Sat Sep 18 14:10:23 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_s_chdir): avoid memory leak and unnecessary chdir to
-	  the original directory when exception has caused in changing
-	  direcotry or within block.  thanks to Johan Holmberg
-	  <holmberg@iar.se> [ruby-core:03446]
-
-Fri Sep 17 20:29:33 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y: add prototypes for Microsoft compiler.
-
-	* ext/ripper/depend (parse.obj): lex.c exists at hdrdir.
-
-	* {bcc32,win32,wince}/Makefile.sub (YACC, YFLAGS, parse.c):
-	  use bison.
-
-Fri Sep 17 17:11:08 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_delete): element comparison might change array
-	  size. [ruby-dev:24273]
-
-	* parse.y: make ruby parser reentrant. merge ripper parser to the
-	  real one.  this change makes ruby require bison.
-
-	* file.c (rb_file_truncate): clear stdio buffer before truncating
-	  the file.  [ruby-dev:24191]
-
-	* ext/digest/digest.c: use rb_obj_class() instead of CLASS_OF
-	  which might return singleton class.  [ruby-dev:24202]
-
-Fri Sep 17 16:07:09 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: improve exit operation
-
-Fri Sep 17 15:01:57 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fix SEGV when (thread_)vwait or
-	  (thread_)tkwait
-
-	* ext/tk/lib/tk.rb: add alias wait_window to wait_destroy
-
-	* ext/tk/lib/multi-tk.rb: support calling 'mainloop' on slave
-	  interpreters (however, the 'real' eventloop must be run on the
-	  Default Master IP)
-
-	* ext/tk/lib/remote-tk.rb: follow the changes of ext/tk/lib/multi-tk.rb
-
-	* ext/tk/sample/remote-ip_sample2.rb: ditto
-
-	* ext/tk/sample/tkoptdb-safeTk.rb: ditto
-
-Thu Sep 16 18:12:13 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI#start): should set REMOTE_USER
-	  to request.user attribute.
-
-	* lib/webrick/httpservlet/filehandler.rb
-	  (WEBrick::HTTPServlet::FileHandler#initialize): should expand
-	  the pathname of document root directory.
-
-Thu Sep 16 15:49:28 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): protect string argument from GC.
-	  [ruby-core:03411]
-
-Wed Sep 15 20:22:23 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tkoptdb-safeTk.rb: fix a bug depend on the changes
-	  of MultiTkIp
-
-Tue Sep 14 23:54:11 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: MultiTkIp#eval_string was en-bugged by
-	  the previous changes.
-
-Tue Sep 14 23:45:44 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_formatter.rb (RI::TextFormatter::TextFormatter.for):
-	  Add Eric Hodel's simpleformatter.
-
-Tue Sep 14 22:11:08 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: Add rdoc.
-
-Tue Sep 14 20:24:49 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y [ripper]: space event is on__sp, not on__lwsp.
-	  [ruby-dev:24257]
-
-	* ext/ripper/eventids2.c: ditto.
-
-	* ext/ripper/lib/ripper.rb: ditto.
-
-	* ext/ripper/depend (ripper.o): No action is needed.
-	  [ruby-dev:24260]
-
-	* ext/ripper/depend: Borland make does not accept pipes in
-	  Makefile rules. [ruby-dev:24589]
-
-	* ext/ripper/depend: separate rules for developpers.
-
-	* ext/ripper/Makefile.dev: new file.
-
-	* ext/ripper/MANIFEST: add Makefile.dev.
-
-	* ext/ripper/tools/generate-eventids1.rb: read from file, not
-	  stdin.
-
-	* ext/ripper/extconf.rb: clean ripper.E.
-
-	* ext/ripper/tools/generate-ripper_rb.rb: #include ids1/ids2
-	  function was lost.
-
-	* ext/ripper/tools/generate-ripper_rb.rb: SCANNER_EVENTS wrongly
-	  contained parser events.
-
-	* ext/ripper/lib/ripper.rb: ditto.
-
-Tue Sep 14 16:59:37 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fix SEGV
-
-	* ext/tk/lib/multi-tk.rb: improve safe-level handling of argument proc
-
-	* ext/tk/sample/multi-ip_sample.rb: rename of old 'safe-tk.rb'
-
-	* ext/tk/sample/safe-tk.rb: new sample script
-
-
-Mon Sep 13 21:33:40 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_to_s): add optional
-	  second argument to specify the output format (see also
-	   X509_NAME_print_ex).
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_init): new constants:
-	  OpenSSL::X509::Name::COMPAT, OpenSSL::X509::Name::RFC2253,
-	  OpenSSL::X509::ONELINE, OpenSSL::X509::MULTILINE.
-
-	* ext/openssl/lib/openssl/x509.rb (OpenSSL::X509::Name::RFC2253DN):
-	  new module to provide the parse for RFC2253 DN format.
-
-	* ext/openssl/lib/openssl/x509.rb (OpenSSL::X509::Name.parse_rfc2253):
-	  new method to parse RFC2253 DN format.
-
-Mon Sep 13 19:16:33 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* eval.c (blk_copy_prev): need frame_dup().  [ruby-dev:24103]
-
-Mon Sep 13 16:23:27 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: MultiTkIp.new_master and new_slave accept
-	  safe-level value argument
-
-Mon Sep 13 10:48:37 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_getpid): don't need to use _getpid() on
-	  mswin32 and mingw32.
-
-Mon Sep 13 10:22:05 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* object.c (nil_inspect): fix typo.
-
-Mon Sep 13 09:29:58 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/depend: (nmake hack) prepend "./" to ripper.c to
-	  avoid {$(srcdir)}.
-
-Mon Sep 13 06:43:42 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper/tools/list-parse-event-ids.rb: does not use getopts.
-
-	* ext/ripper/tools/list-scan-event-ids.rb: ditto.
-
-Mon Sep 13 02:42:28 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/Setup: add ripper.
-
-	* ext/Setup.atheos: ditto.
-
-	* ext/Setup.dj: ditto.
-
-	* ext/Setup.emx: ditto.
-
-	* ext/Setup.nt: ditto.
-
-	* ext/Setup.x68: ditto.
-
-Mon Sep 13 02:26:31 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/ripper: ripper extention added.
-
-	* ext/ripper/MANIFEST: new file.
-
-	* ext/ripper/README: new file.
-
-	* ext/ripper/depend: new file.
-
-	* ext/ripper/extconf.rb: new file.
-
-	* ext/ripper/eventids2.c: new file.
-
-	* ext/ripper/ripper.rb.in: new file.
-
-	* ext/ripper/lib/ripper.rb: new file.
-
-	* ext/ripper/test/check-event-arity.rb: new file.
-
-	* ext/ripper/test/check-event-coverage.sh: new file.
-
-	* ext/ripper/test/check-scanner-event-coverage.rb: new file.
-
-	* ext/ripper/test/list-called-events.rb: new file.
-
-	* ext/ripper/test/src_rb: new file.
-
-	* ext/ripper/test/validate.rb: new file.
-
-	* ext/ripper/tools/generate-eventids1.rb: new file.
-
-	* ext/ripper/tools/generate-param-macros.rb: new file.
-
-	* ext/ripper/tools/generate-ripper_rb.rb: new file.
-
-	* ext/ripper/tools/list-parse-event-ids.rb: new file.
-
-	* ext/ripper/tools/list-scan-event-ids.rb: new file.
-
-	* ext/ripper/tools/preproc.rb: new file.
-
-	* ext/ripper/tools/strip.rb: new file.
-
-	* test/ripper: ripper tests added.
-
-	* test/ripper/dummyparser.rb: new file.
-
-	* test/ripper/test_parser_events.rb: new file.
-
-	* test/ripper/test_scanner_events.rb: new file.
-
-Mon Sep 13 01:03:02 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: improve control of preserv/release tcltkip
-
-	* ext/tcltklib/tcltklib.c: store original 'exit' command
-
-	* ext/tk/tkutil.c: fix(?) SEGV
-
-Mon Sep 13 00:22:53 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y: fix file header.
-
-Mon Sep 13 00:20:39 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y: ripper merged.
-
-	* lex.c: ditto.
-
-	* keywords: ditto.
-
-Sun Sep 12 23:53:17 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* util.c (ruby_strdup): remove unnecessary code. (xmalloc never
-	  returns NULL.)
-
-	* util.c (ruby_getcwd): fix memory leak on failure.
-
-Sun Sep 12 02:41:58 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: add TclTkIp#allow_ruby_exit? and
-	  allow_ruby_exit=
-
-	* ext/tk/lib/multi-tk.rb: ditto.
-
-	* ext/tk/lib/remote-tk.rb: ditto.
-
-	* ext/tcltklib/MANUAL.euc: ditto.
-
-	* ext/tcltklib/MANUAL.eng: ditto.
-
-	* ext/tcltklib/tcltklib.c: fix some reasons of SEGV
-
-	* ext/tk/tkutil.c: ditto.
-
-	* ext/tk/lib/multi-tk.rb: ditto.
-
-	* ext/tk/lib/tk/timer.rb: ditto.
-
-Sat Sep 11 16:09:46 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb: Fix up cross-file class merging.
-
-Fri Sep 10 20:18:05 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tcltklib/tcltklib.c (lib_merge_tklist): fix suspicious
-	  pointer conversion.
-
-Fri Sep 10 19:16:24 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/Makefile.sub: bccwin32 port starts to use RTL dll.
-	  (need to rebuild all) [ruby-dev:24138]
-
-	* win32/win32.{h,c}: ditto.
-
-Fri Sep 10 15:55:59 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mkdir_p): should pass mode argument to
-	  Dir.mkdir. [ruby-dev:24242]
-
-	* test/fileutils/test_fileutils.rb: test it.
-
-Fri Sep 10 02:43:54 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/template/kilmer.rb: James Buck's
-	  patch for call-seq.
-
-Thu Sep  9 13:58:56 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_init): change flag value for setting
-	  'argv' and 'argv0' variable
-
-	* ext/tk/lib/remote-tk.rb: follow changes of multi-tk.rb
-
-Thu Sep  9 11:46:18 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::do_classes): Allow
-	  spaces aroun parameter to define_method_under (James Buck)
-
-Wed Sep  8 18:44:03 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_write): zero fill a gap if exsts.
-	  [ruby-dev:24190]
-
-Wed Sep  8 15:19:49 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_init): cannot create a IP at level 4
-
-	* ext/tk/lib/multi-tk.rb: improve 'exit' operation, security check,
-	  and error treatment
-
-	* ext/tk/lib/multi-tk.rb: allow a trusted slave IP to create slave IPs
-
-	* ext/tk/lib/tk/listbox.rb: add TkListbox#value, value=, clear,	and
-	  erase
-
-	* ext/tk/lib/tk/text.rb: add TkText#clear and erase
-
-Tue Sep  7 15:17:49 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): break immediately if a
-	  socket is non-blocking.  [ruby-talk:111654]
-
-Tue Sep  7 12:48:22 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32,wince}/Makefile.sub (config.h): add fcntl.
-
-	* win32/win32.[ch] (fcntl): ditto.
-
-	* win32/win32.c (rb_w32_connect): support nonblocking mode.
-
-	* ext/socket/socket.c (wait_connectable, ruby_connect): support
-	  nonblocking connect on various platforms.
-
-Mon Sep  6 11:00:47 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_s_chdir): the patch to shut up false warning when
-	  exception occurred within a block.  a patch was given from Johan
-	  Holmberg <holmberg at iar.se>.  [ruby-core:03292]
-
-Mon Sep  6 10:57:40 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/lib/tk/menu.rb(TkOptionMenubutton#insert): call correct method
-
-Mon Sep  6 07:51:42 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (cvar_cbase): singletons should refer outer cvar scope.
-	  [ruby-dev:24223]
-
-	* eval.c (rb_load): should preserve previous ruby_wrapper value.
-	  [ruby-dev:24226]
-
-Sat Sep  4 01:14:57 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (cvar_cbase): class variables cause SEGV in
-	  instance_eval() for fixnums and symbols. [ruby-dev:24213]
-
-Fri Sep  3 17:47:58 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (make_struct): remove redefining constant when
-	  conflict.  [ruby-dev:24210]
-
-Fri Sep  3 11:31:44 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: Tk.after makes TkCore::INTERP.tk_cmd_tbl grow
-	  [ruby-dev:24207]
-
-Fri Sep  3 02:12:48 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fix typo [ruby-talk:111266]
-
-	* ext/tk/lib/tk/text.rb: fix typo
-
-	* ext/tk/lib/multi-tk.rb: improve safe-level treatment on slave IPs
-
-Fri Sep  3 01:54:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): extact target prefix from Makefiles.
-
-	* ext/extmk.rb: already built-in libraries satisfy dependencies.
-	  [ruby-dev:24028]
-
-Wed Sep  1 21:16:50 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/lib/tk/spinbox.rb: fix typo
-
-Wed Sep  1 19:28:37 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_proc_exec): label cannot precede variable declarations.
-
-Tue Aug 31 18:20:49 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/tk/tkutil.c (cbsubst_init): fix memory leak
-
-	* ext/tk/tkutil.c (cbsubst_get_all_subst_keys): fix SEGV
-
-Tue Aug 31 16:04:22 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_delete): when a tcltkip is deleted,
-	  destroy its root widget
-
-Tue Aug 31 12:30:36 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (del_root): fix SEGV
-
-Mon Aug 30 21:50:14 2004  Dave Thomas  <dave@pragprog.com>
-
-	* object.c: Add RDoc for Module.included.
-
-Mon Aug 30 23:11:06 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_driver.rb (and others): ri now merges documentation
-	  if it finds the same class in multiple places.
-
-Mon Aug 30 22:40:30 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: 'restart' method accepts arguments
-
-Mon Aug 30 15:10:46 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (GNU/k*BSD): fixed FTBFS on GNU/k*BSD. [ruby-dev:24051]
-
-Sun Aug 29 14:08:56 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: compile error on bcc32 [ruby-dev:24081]
-
-	* ext/tk/lib/multi-tk.rb: MultiTkIp#eval_string does not work
-
-Sat Aug 28 23:04:41 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_and): protect parameters from GC.
-	  [ruby-talk:110664]
-
-Fri Aug 27 12:13:50 2004  Tanaka Akira  <akr@m17n.org>
-
-	* ext/stringio/stringio.c (Init_stringio): add StringIO#readpartial as
-	  an alias for StringIO#sysread.
-
-Fri Aug 27 10:14:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_proc_exec): strip trailing spaces.  [ruby-dev:24143]
-
-	* win32/win32.c (CreateChild): ditto.
-
-Thu Aug 26 04:38:29 2004  Dave Thomas  <dave@pragprog.com>
-
-	* eval.c (return_jump): Minor typo in error message. Now reads
-	  "return can't jump across threads".
-
-Wed Aug 25 15:18:52 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_longjmp): Exception#to_str is no longer defined.
-
-Wed Aug 25 11:39:10 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_equal): exceptions are equal if they share same
-	  class, message and backtrace. [ruby-talk:110354]
-
-	* error.c (name_err_mesg_equal): ditto.
-
-Tue Aug 24 16:41:48 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::FileStore#initialize): do not
-	  use a session id as a filename.
-
-	* lib/cgi/session/pstore.rb (CGI::Session::PStore#initialize): ditto.
-
-	* lib/cgi/session/pstore.rb (CGI::Session::PStore#initialize): use
-	  Dir::tmpdir.
-
-Tue Aug 24 14:32:17 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::FileStore#initialize): untaint
-	  session id after check.
-
-Tue Aug 24 08:57:51 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509attr.c (ossl_x509attr_initialize): d2i
-	  functions may replace the pointer indicated by the first argument.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_initialize): ditto.
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_initialize): ditto.
-
-Mon Aug 23 12:43:32 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/resolv.rb (Config.default_config_hash): when multiple domains
-	  are set, Win32::Resolv.get_resolv_info returns Array.
-
-Sun Aug 22 16:27:38 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read):
-	  - should return an empty string if specified length to read is 0.
-	  - should check for pending data and wait for fd before reading.
-	  - call underlying IO's sysread if SSL session is not started.
-	  [ruby-dev:24072], [ruby-dev:24075]
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_write):
-	  - call underlying IO's syswrite if SSL session is not started.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_pending): new method
-	  OpenSSL::SSL#pending.
-
-	* ext/openssl/lib/openssl/buffering.rb: should not use select.
-
-Sun Aug 22 01:10:36 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpproxy.rb (WEBrick::HTTPProxyServer#proxy_connect):
-	  should call :ProxyContentHandler before finishing CONNECT.
-
-Sat Aug 21 06:41:16 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tcltklib/extconf.rb (find_tcl, find_tk): find stub library.
-
-	* lib/mkmf.rb (arg_config, with_config): deal with '-' and '_'
-	  uniformly.  [ruby-dev:24118]
-
-Fri Aug 20 14:49:42 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_check_writable): no need to check read buffer if
-	  already changed to write mode.
-
-Fri Aug 20 11:46:43 2004  UENO Katsuhiro  <katsu@blue.sky.or.jp>
-
-	* ext/zlib/zlib.c: GzipReader#ungetc caused crc error.
-
-Thu Aug 19 16:29:45 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: Fail to treat a hash value of 'font' option.
-
-	* ext/tk/lib/tk.rb: bindinfo cannot return '%' substiturion infomation.
-
-	* ext/tk/lib/menu.rb: typo bug.
-
-Thu Aug 19 15:15:24 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (free_dir): fix memory leak.  reported by yamamoto
-	  madoka.
-
-Thu Aug 19 09:19:27 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (LIBS): need to link shell32
-	  library for SH* functions on mswin32 and mingw32.
-
-	* wince/Makefile.sub (LIBS): need to link ceshell library for SH*
-	  functions on mswince.
-
-Thu Aug 19 03:07:00 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/baseemitter.rb: folding now handles double-quoted strings,
-	  fixed problem with extra line feeds at end of folding, whitespace
-	  opening scalar blocks.
-
-	* lib/yaml/rubytypes.rb: subtelties in handling strings with
-	  non-printable characters and odd whitespace patterns.
-
-Wed Aug 18 23:44:20 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb (rbuf_fill): OpenSSL::SSLSocket has its own
-	  buffer, select(2) might not work. [ruby-dev:24072]
-
-Wed Aug 18 17:10:12 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/tcltklib/stubs.c (ruby_tcltk_stubs): need to call
-	  Tcl_FindExecutable() for Tcl/Tk 8.4.
-
-Wed Aug 18 12:52:55 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_obj_instance_eval): evaluates under special singleton
-	  classes as for special constants.
-
-Wed Aug 18 11:22:52 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (init_env): initialize HOME and USER environment
-	  variables unless set.
-
-Wed Aug 18 10:17:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (bind_eval): new method. [RCR 251]
-
-	* string.c (rb_str_clear): new method. [ruby-dev:24104]
-
-Tue Aug 17 17:20:59 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_reopen): should clear allocated OpenFile.  pointed
-	  out by Guy Decoux. [ruby-core:03288]
-
-Tue Aug 17 01:36:32 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/usage.rb: Remove extra indent. Tidy 'ri' option
-	  parsing so RDoc::usage plays better with OptionParser.
-
-Sat Aug 14 02:48:16 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/usage.rb: Added. Allows command line programs
-	  to report usage using their initial RDoc comment.
-
-Sat Aug 14 01:25:48 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/token.c: re2c no longer compiled with bit vectors.  caused
-	  problems for non-ascii characters. [ruby-core:03280]
-	* ext/syck/implicit.c: ditto.
-	* ext/syck/bytecode.c: ditto.
-
-Fri Aug 13 12:55:20 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils.parse_range_header):
-	  fix regex for range-spec.
-
-	* lib/webrick/httpservlet/filehandler.rb
-	  (WEBrick::HTTPServlet::DefaultFileHandler#make_partial_content):
-	  multipart/byteranges response was broken.
-
-	* lib/xmlrpc/server.rb: refine example code.
-
-Thu Aug 12 10:54:17 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* rubyio.h (rb_eof_error): should mark as NORETURN.
-
-	* win32/win32.c (make_cmdvector): adjust escaped successive
-	  double-quote handling.
-
-Thu Aug 12 01:53:10 2004  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (read_buffered_data): extracted from rb_io_fread.
-	  (io_readpartial): new method IO#readpartial.
-	  [ruby-dev:24055]
-
-Wed Aug 11 17:17:50 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (RPATHFLAG): stop setting RPATHFLAG on Interix.
-
-Mon Aug  9 15:03:20 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/erbhandler.rb
-	  (WEBrick::HTTPServlet::ERBHandler#do_GET): should select media type
-	  by suffix of script filename.
-
-Mon Aug  9 12:51:43 2004  Dave Thomas  <dave@pragprog.com>
-
-	* dir.c (dir_s_glob): Roll in Austin Ziegler's Dir.glob and
-	  fnmatch updates.
-
-Mon Aug  9 06:33:06 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (cp_r): copies symlink to symlink, except
-	  root entries of cp_r.
-
-	* lib/fileutils.rb: new method FileUtils.copy_entry.
-
-	* test/fileutils/test_fileutils.rb: more cp_r tests.
-
-Sun Aug  8 00:43:31 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/implicit.c: added sexagecimal float#base60.
-
-	* ext/syck/rubyext.c (yaml_org_handler): ditto.
-
-	* lib/token.c: indentation absolutely ignored when processing flow
-	  collections.  plain scalars are trimmed if indentation follows in
-	  an ambiguous flow collection.
-
-Sat Aug  7 03:08:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_daemon): new method.  should be modified for
-	  platforms without /dev/null.
-
-Sat Aug  7 00:50:01 2004  Tanaka Akira  <akr@m17n.org>
-
-	* ext/zlib/zlib.c: Zlib::GzipReader#read(0) returns "" instead of nil.
-
-Wed Aug  4 13:26:00 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_bytes0): optimize out read(0). [ruby-talk:108276]
-
-Tue Aug  3 13:49:12 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/namespace.rb: bug fix
-
-	* ext/tk/lib/tkextlib/treectrl/tktreectrl.rb: add Tk::TreeCtrl.loupe
-
-Mon Aug  2 23:33:48 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_file.rb (test_fnmatch): added more tests.
-
-Mon Aug  2 18:04:21 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/msgcat.rb (set_translation): bug fix (fail to set
-	  trans_str to the same as src_str when trans_str is not given.)
-
-Mon Aug  2 17:40:44 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (blk_free): fixed serious memory leak. [ruby-dev:24013]
-
-Mon Aug  2 11:53:06 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/code_objects.rb (RDoc::Context::find_symbol): Fix infinite recursion
-	  looking up some top level symbols (batsman)
-
-Mon Aug  2 11:48:29 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::do_methods): Allow '.'s in
-	  variable names to support SWIG generated files (Hans Fugal)
-
-Sat Jul 31 23:08:00 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): stupid mistakes fixed. [ruby-dev:24006]
-
-Sat Jul 31 17:39:47 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-expr-beg, ruby-parse-partial,
-	  ruby-calculate-indent, ruby-move-to-block, ruby-forward-sexp,
-	  ruby-backward-sexp): keywords must match word-wise.
-
-Sat Jul 31 13:37:51 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): avoid unnecessary method invocations.
-
-Sat Jul 31 05:35:37 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: exceptions were using an older
-	  YAML.object_maker. [ruby-core:03080]
-
-	* ext/syck/token.c (sycklex_yaml_utf8): using newline_len to
-	  handline CR-LFs.  "\000" was showing up on folded blocks which
-	  stopped at EOF.
-
-Sat Jul 31 01:25:11 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): call is_defined() before invoking
-	  rb_eval().  [ruby-talk:107867]
-
-Fri Jul 30 16:10:54 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (lib_fromUTF8_core): raise ArgumentError when
-	  the unknown encoding name is given.
-
-	* ext/tcltklib/tcltklib.c (lib_toUTF8_core): ditto.
-
-	* ext/tk/lib/tk.rb (Tk::Encoding.encoding_convertfrom): bug fix.
-
-	* ext/tk/lib/tk.rb (Tk::Encoding.encoding_convertto): ditto.
-
-Wed Jul 28 18:59:17 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::initialize): remove at_exit code for CGI_PARAMS
-	  and CGI_COOKIES.  they will no longer be used.
-
-Wed Jul 28 15:44:08 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): should call rb_call_super() directly for
-	  visibility overriding.  [ruby-dev:23989]
-
-Wed Jul 28 01:04:44 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* env.h: remove argv from ruby_frame.
-
-	* eval.c (rb_eval): no more copy on write.
-
-	* eval.c (assign): ditto.
-
-	* eval.c (rb_call0): can receive *rest by specifying negative
-	  argc.  (-1 means 0 arg and *rest, -2 means 1 arg and *rest...)
-
-	* eval.c (rb_call0): properly set frame's argc counter.
-
-	* gc.c (rb_gc_mark_frame): need not to mark frame's argv
-
-	* gc.c (run_final): wrong order of data. [ruby-dev:23984]
-
-Tue Jul 27 07:05:04 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): copy on write for argument local variable
-	  assignment.
-
-	* eval.c (assign): ditto.
-
-	* eval.c (rb_call0): update ruby_frame->argv with the default
-	  value used for the optional arguments.
-
-	* object.c (Init_Object): "===" calls rb_obj_equal() directly.
-	  [ruby-list:39937]
-
-Mon Jul 26 11:22:55 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils.escape): should
-	  escape space.
-
-Sun Jul 25 10:56:28 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* win32/win32.{h,c} (rb_w32_{f,fd,fs}open): workaround for bcc32's
-	  {f,fd,fs}open bug. set errno EMFILE and EBADF. [ruby-dev:23963]
-
-	* test/drb/drbtest.rb: fix method duplication.
-
-Sat Jul 24 13:32:47 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (rb_range_beg_len): returns Qnil only when "beg" points
-	  outside of a range.  No boundary check for "end".
-
-Fri Jul 23 16:40:25 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (define_final): should not disclose NODE* to Ruby world.
-	  [ruby-dev:23957]
-
-Fri Jul 23 08:52:22 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (disconnected?): new method.
-
-Thu Jul 22 16:41:54 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::FileStore#update): sets the
-	  permission of the session data file to 0600.
-
-	* lib/cgi/session/pstore.rb (CGI::Session::Pstore#initialize):
-	  ditto.
-
-Mon Jul 19 00:53:46 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb
-	  (WEBrick::HTTPServlet::CGIhandler#do_GET): set SystemRoot environment
-	  variable to CGI process on Windows native platforms. [ruby-dev:23936]
-
-Sun Jul 18 16:14:29 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/msgcat.rb (TkMsgCatalog.callback): bug fix
-	  ( wrong number of argument )
-
-Sun Jul 18 08:13:58 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): remove extra sign digit.
-
-Sun Jul 18 03:19:14 2004  Akinori MUSHA  <knu@iDaemons.org>
-
-	* dir.c (bracket): use NULL instead of 0.
-
-Sun Jul 18 02:35:30 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (receive_responses): return if a LOGOUT response
-	  received.
-
-Sat Jul 17 23:59:01 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (send_string_data): wait command continuation
-	  requests before sending octet data of literals.
-
-Sat Jul 17 23:54:59 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb: TkVariable#ref returns a TkVariable object
-
-Sat Jul 17 22:04:44 2004  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/ldap.rb: method hierarchical? should be in URI::LDAP.
-
-Sat Jul 17 18:29:07 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): not to show same error messages twice.
-
-Sat Jul 17 14:18:11 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_match_m): String#match should also take
-	  optional argument.  [ruby-core:03205]
-
-	* re.c (rb_reg_match_m): add optional second argugment "pos" to
-	  specify match start point.  [ruby-core:03203]
-
-Sat Jul 17 13:13:32 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex::identify_string): %s string do not
-	  process expression interpolation.  [ruby-talk:106691]
-
-Sat Jul 17 05:26:27 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/diagram.rb: Incorporate Micheal Neumann's
-	  client-side imagemao patch
-
-Sat Jul 17 01:57:03 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (THREAD_ALLOC): th->thread should be initialized to NULL.
-	  [ruby-talk:106657]  The solution was found by Guy Decoux.
-
-Fri Jul 16 22:30:28 2004  Michael Neumann  <mneumann@ntecs.de>
-
-	* file.c (rb_stat_dev_major): new methods File::Stat#dev_major and
-	  #dev_minor. [ruby-core:03195]
-
-Fri Jul 16 11:17:38 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (exit_initialize): use EXIT_SUCCESS instead of 0.
-	  [ruby-dev:23913]
-
-	* error.c (exit_success_p): new method SystemExit#success?.
-	  [ruby-dev:23912]
-
-	* error.c (syserr_initialize): initialization for subclasses.
-	  [ruby-dev:23912]
-
-Thu Jul 15 23:53:38 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#warn, OptionParser#abort): Exception
-	  no longer has to_str method.
-
-Thu Jul 15 22:59:48 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/extconf.rb: added dir_config for curses, ncurses,
-	  termcap.
-
-Thu Jul 15 20:44:46 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* class.c: rdoc patch
-
-Thu Jul 15 14:12:34 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml.rb (YAML::load_file, YAML::parse_file): added.
-
-	* ext/syck/token.c: re2c compiled with bit vectors now.
-	* ext/syck/implicit.c: ditto.
-	* ext/syck/bytecode.c: ditto.
-
-Thu Jul 15 10:15:04 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/, ext/tcltklib/: bug fix
-
-	* ext/tk/lib/tk.rb: better operation for SIGINT when processing
-	  callbacks.
-	* ext/tk/lib/tk/msgcat.rb: ditto.
-	* ext/tk/lib/tk/variable.rb: ditto.
-	* ext/tk/lib/tk/timer.rb: ditto.
-
-	* ext/tk/lib/tk/validation.rb: add Tk::ValidateConfigure.__def_validcmd
-	  to define validatecommand methods easier
-
-	* ext/tk/lib/tk.rb (_genobj_for_tkwidget): support autoload Tk ext
-	  classes
-
-	* ext/tk/lib/tk/canvas.rb and so on: remove the parent widget type
-	  check for items (e.g. canvas items; depends on the class) to
-	  avoid some troubles on Tk extension widget class definition.
-
-	* ext/tk/lib/tkextlib/: add Iwidget and TkTable extension support
-
-	* ext/tk/sample/tkextlib/: add samples of Iwidget and TkTable
-
-
-Wed Jul 14 23:49:30 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_min_by): new method Enum#min_by.  added Enum#max_by
-	  as well.
-
-Wed Jul 14 18:05:21 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1cons_to_der): fix type of
-	  argument. [ruby-dev:23891]
-
-	* test/openssl/test_x509store.rb: prune tests for CRL checking
-	  unless X509::V_FLAG_CRL_CHECK is defined.
-
-Wed Jul 14 12:20:05 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* util.c (ruby_strtod): should not convert string in the form of
-	  "-I.FE-X" which both "I" and "F" are ommitted. [ruby-dev:23883]
-
-	* test/ruby/test_float.rb (test_strtod): add test for bug fix.
-
-Wed Jul 14 00:33:48 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* array.c: rdoc patch. merged patch from Johan Holmberg
-	  <holmberg@iar.se> [ruby-core:3170]
-
-Tue Jul 13 19:39:12 2004  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic#merge_path):
-	  "URI('http://www.example.com/foo/..') + './'" should return
-	  "URI('http://www.example.com/')".  [ruby-list:39838]
-	  "URI('http://www.example.com/') + './foo/bar/..'" should return
-	  "URI('http://www.example.com/foo/')".  [ruby-list:39844]
-
-	* test/uri/test_generic.rb (TestGeneric#test_merge): added tests.
-
-Tue Jul 13 15:48:56 2004  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb (init_mkmf): Do not add $(libdir) to $LIBPATH in
-	   extmk mode.
-
-	* lib/mkmf.rb (dir_config): Prepend a new library path instead of
-	  appending so it is tried first.
-
-Tue Jul 13 00:50:48 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb: Support call-seq: for Ruby files.
-
-Mon Jul 12 21:20:51 2004  Dave Thomas  <dave@pragprog.com>
-
-	* html_generator.rb: Support hyperlinks of the form {any text}[xxx]
-	  as well as stuff[xxx]
-
-Sat Jul 10 09:30:24 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/marshal/test_struct.rb: use qualified built-in class name
-	  (::Struct) to avoid name crash.
-
-Sat Jul 10 04:21:56 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: better operation for SIGINT when processing
-	  callbacks.
-	* ext/tk/lib/tk/msgcat.rb: ditto.
-	* ext/tk/lib/tk/variable.rb: ditto.
-	* ext/tk/lib/tk/timer.rb: ditto.
-
-	* ext/tk/lib/tk/validation.rb (__def_validcmd):  add a module
-	  function of Tk::ValidateConfigure to define validatecommand
-	  methods easier
-
-Fri Jul  9 22:18:59 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* array.c, enum.c, pack.c: rdoc patch from Johan Holmberg
-	  <holmberg@iar.se> [ruby-core:3132] [ruby-core:3136]
-
-	* numeric.c: rdoc patch.
-
-Fri Jul  9 19:26:39 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::HTTPS#proxy_open): raise ArgumentError to
-	  notice https is not supported.
-
-Fri Jul  9 14:28:54 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_raise): accept third argument as well as
-	  Kernel#raise, and evaluate the arguments to create an exception in
-	  the caller's context.  [ruby-talk:105507]
-
-Fri Jul  9 01:47:08 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib: bug fix
-	* ext/tk/lib/tkextlib/itcl: add [incr Tcl] support
-	* ext/tk/lib/tkextlib/itk: add [incr Tk] support
-	* ext/tk/lib/tkextlib/iwidgets: midway point of [incr Widgets] support
-	* ext/tk/sample/tkextlib/iwidgets: very simple examples of
-	  [incr Widgets]
-
-Thu Jul  8 19:27:16 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_stack_end_address): detect stack end address
-	  variable supplied by system.  [ruby-core:03115]
-
-	* gc.c (Init_stack): use system provided address if possible.
-
-Thu Jul  8 00:05:23 2004  akira yamada  <akira@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile::initialize): got out code of
-	  generating tmpname.  [ruby-dev:23832][ruby-dev:23837]
-
-Wed Jul  7 02:31:41 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/{rss,parser,0.9,1.0,2.0}.rb: supported RSS 0.9x/2.0
-	  validation and validation which disregard order of elements.
-	* test/rss/test_parser.rb: added tests for RSS 0.9x/2.0
-	  validation.
-	* test/rss/{test_trackback,rss-testcase}.rb: fixed no good method
-	  name.
-
-Wed Jul  7 00:48:34 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/tk/lib/tkextlib/tktrans.rb,
-	  ext/tk/lib/tkextlib/treectrl.rb: fix syntax errors.
-
-Tue Jul  6 18:38:45 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib: improve framework of developping Tcl/Tk extension
-	  wrappers
-
-Mon Jul  5 23:56:42 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/{trackback,syndication,dublincore,content}.rb: worked
-	  with ruby 1.6 again.
-
-	* test/rss/rss-assertions.rb: ditto.
-
-Mon Jul  5 22:54:39 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/uri/common.rb (Kernel#URI): new global method for parsing URIs.
-
-Mon Jul  5 09:02:52 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_yield, rb_f_catch): 4th argument to rb_yield_0()
-	  is a set of bit flags.  [ruby-dev:23859]
-
-Mon Jul  5 01:20:17 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* lib/drb/drb.rb(DRbConn self.open): If socket pool is full, close
-	  the socket whose last-access-time is oldest. (and add new one)
-	  [ruby-dev:23860]
-
-Sun Jul  4 12:24:50 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb: added copyright header.
-
-Sat Jul  3 22:25:27 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* added files:
-	  * lib/soap/header/*
-	  * lib/soap/rpc/httpserver.rb
-	  * lib/wsdl/soap/cgiStubCreator.rb
-	  * lib/wsdl/soap/classDefCreator.rb
-	  * lib/wsdl/soap/classDefCreatorSupport.rb
-	  * lib/wsdl/soap/clientSkeltonCreator.rb
-	  * lib/wsdl/soap/driverCreator.rb
-	  * lib/wsdl/soap/mappingRegistryCreator.rb
-	  * lib/wsdl/soap/methodDefCreator.rb
-	  * lib/wsdl/soap/servantSkeltonCreator.rb
-	  * lib/wsdl/soap/standaloneServerStubCreator.rb
-	  * lib/wsdl/xmlSchema/enumeration.rb
-	  * lib/wsdl/xmlSchema/simpleRestriction.rb
-	  * lib/wsdl/xmlSchema/simpleType.rb
-	  * lib/xsd/codegen/*
-	  * lib/xsd/codegen.rb
-	  * sample/soap/authheader/*
-	  * sample/soap/raa2.4/*
-	  * sample/soap/ssl/*
-	  * sample/soap/swa/*
-	  * sample/soap/whois.rb
-	  * sample/wsdl/raa2.4/*
-	  * test/soap/header/*
-	  * test/soap/ssl/*
-	  * test/soap/struct/*
-	  * test/soap/swa/*
-	  * test/soap/wsdlDriver/*
-	  * test/wsdl/multiplefault.wsdl
-	  * test/wsdl/simpletype/*
-	  * test/wsdl/test_multiplefault.rb
-
-	* modified files:
-	  * lib/soap/baseData.rb
-	  * lib/soap/element.rb
-	  * lib/soap/generator.rb
-	  * lib/soap/netHttpClient.rb
-	  * lib/soap/parser.rb
-	  * lib/soap/property.rb
-	  * lib/soap/soap.rb
-	  * lib/soap/streamHandler.rb
-	  * lib/soap/wsdlDriver.rb
-	  * lib/soap/encodingstyle/handler.rb
-	  * lib/soap/encodingstyle/literalHandler.rb
-	  * lib/soap/encodingstyle/soapHandler.rb
-	  * lib/soap/mapping/factory.rb
-	  * lib/soap/mapping/mapping.rb
-	  * lib/soap/mapping/registry.rb
-	  * lib/soap/mapping/rubytypeFactory.rb
-	  * lib/soap/mapping/wsdlRegistry.rb
-	  * lib/soap/rpc/cgistub.rb
-	  * lib/soap/rpc/driver.rb
-	  * lib/soap/rpc/proxy.rb
-	  * lib/soap/rpc/router.rb
-	  * lib/soap/rpc/soaplet.rb
-	  * lib/soap/rpc/standaloneServer.rb
-	  * lib/wsdl/data.rb
-	  * lib/wsdl/definitions.rb
-	  * lib/wsdl/operation.rb
-	  * lib/wsdl/parser.rb
-	  * lib/wsdl/soap/definitions.rb
-	  * lib/wsdl/xmlSchema/complexContent.rb
-	  * lib/wsdl/xmlSchema/complexType.rb
-	  * lib/wsdl/xmlSchema/data.rb
-	  * lib/wsdl/xmlSchema/parser.rb
-	  * lib/wsdl/xmlSchema/schema.rb
-	  * lib/xsd/datatypes.rb
-	  * lib/xsd/qname.rb
-	  * sample/soap/sampleStruct/server.rb
-	  * sample/wsdl/amazon/AmazonSearch.rb
-	  * sample/wsdl/amazon/AmazonSearchDriver.rb
-	  * test/soap/test_property.rb
-	  * test/soap/calc/test_calc_cgi.rb
-	  * test/wsdl/test_emptycomplextype.rb
-
-	* summary
-	  * add SOAP Header mustUnderstand support.
-
-	  * add HTTP client SSL configuration and Cookies support (works
-	    completely with http-access2).
-
-	  * add header handler for handling sending/receiving SOAP Header.
-
-	  * map Ruby's anonymous Struct to common SOAP Struct in SOAP Object
-	    Model.  it caused error.
-
-	  * add WSDL simpleType support to restrict lexical value space.
-
-Sat Jul  3 17:19:44 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/tk/lib/tkextlib/tkDND.rb: fix syntax error.
-
-Thu Jul  1 18:36:08 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tcltklib: bug fix
-
-	* ext/tk/lib/tk: bug fix and add Tcl/Tk extension support libraries
-
-Thu Jul  1 18:31:31 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pstore.rb (PStore#transaction): get rid of opening in write mode
-	  when read only transaction.  [ruby-dev:23842]
-
-Thu Jul  1 00:44:42 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_encrypt, ossl_cipher_decrypt):
-	  re-implemnt (the arguments for this method is ).
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_pkcs5_keyivgen): new method
-	  OpenSSL::Cipher::Cipher#pkcs5_keyivgen. it calls EVP_BytesToKey().
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_set_key_length): new method
-	  OpenSSL::Cipher::Cipher#key_len=.
-
-Wed Jun 30 19:48:09 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: check for EVP_CIPHER_CTX_copy, ENGINE_add,
-	  EVP_CIPHER_CTX_set_padding, EVP_CipherFinal_ex, EVP_CipherInit_ex,
-	  EVP_DigestFinal_ex and EVP_DigestInit_ex.
-
-	* ext/openssl/openssl_missing.c (EVP_CIPHER_CTX_copy): new function.
-
-	* ext/openssl/openssl_missing.h (EVP_DigestInit_ex, EVP_DigestFinal_ex,
-	  EVP_CipherInit_ex, EVP_CipherFinal_ex, HMAC_Init_ex): new macro for
-	  OpenSSL 0.9.6.
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_alloc, ossl_cipher_initialize,
-	  ossl_cipher_copy, ossl_cipher_reset, ossl_cipher_encrypt,
-	  ossl_cipher_decrypt, ossl_cipher_final, ossl_cipher_set_key,
-	  ossl_cipher_set_iv): replace all EVP_CipherInit and
-	  EVP_CipherFinal into EVP_CipherInit_ex and EVP_CipherFinal_ex.
-	  and EVP_CIPHER_CTX_init should only be called once.
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_set_padding): check for
-	  EVP_CIPHER_CTX_set_padding.
-
-	* ext/openssl/ossl_cipher.c (Init_ossl_cipher): Cipher#<< is deprecated.
-
-	* ext/openssl/ossl_digest.c: replace all EVP_DigestInit and
-	  EVP_DigestFinal into EVP_DigestInit_ex and EVP_DigestFinal_ex.
-	  and EVP_MD_CTX_init should only be called once.
-
-	* ext/openssl/ossl_digest.c (digest_final): should call
-	  EVP_MD_CTX_cleanup to avoid memory leak.
-
-	* ext/openssl/ossl_hmac.c (ossl_hmac_initialize): repalce HMAC_init
-	  into HMAC_init_ex. and HMAC_CTX_init is moved to ossl_hmac_alloc.
-
-	* ext/openssl/ossl_hmac.c (hmac_final): should call
-	  HMAC_CTX_cleanup to avoid memory leak.
-
-	* test/openssl/test_cipher.rb, test/openssl/test_digest.rb,
-	  test/openssl/test_hmac.rb: new file.
-
-Wed Jun 30 16:59:39 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_file.rb (test_fnmatch): some tests for File.fnmatch
-	  are added.
-
-Wed Jun 30 11:38:51 2004  Mikael Brockman  <phubuh@phubuh.org>
-
-	* parse.y (primary): should not be NULL.  [ruby-core:03098]
-
-Wed Jun 30 02:41:10 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_emitter_new): set buffer after
-	  Data_Wrap_Struct to avoid possible GC. [ruby-talk:104835]
-
-Tue Jun 29 10:31:19 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval_cmd, rb_thread_trap_eval): restore safe level.
-
-	* gc.c (define_final, run_final): preserve and restore safe level for
-	  finalizers.  [ruby-core:03058]
-
-	* signal.c (signal_exec, rb_trap_exit, trap): preserve and restore
-	  safe level for signal handlers.  [ruby-dev:23829]
-
-Mon Jun 28 14:57:56 2004  Jeff Mitchell  <quixoticsycophant@yahoo.com>
-
-	* configure.in, lib/mkmf.rb (LIBPATHFLAG): use double quotes due to
-	  DOSISH compilers.  [ruby-core:03107]
-
-Mon Jun 28 00:35:29 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* sample/drb/*.rb: using 'DRb.thread.join' instead of 'gets'
-
-Sun Jun 27 22:36:47 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/tdiary_plugin/rss-recent.rb: supported Hiki.
-
-Sat Jun 26 15:17:11 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_mod_class_variables): class variables are no longer
-	  inherited.  [ruby-dev:23808]
-
-Sat Jun 26 11:07:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (aix): -b must come at the start of the command line,
-	  and -e must not appear while testing libraries.  [ruby-talk:104501]
-
-	* lib/mkmf.rb (find_header, dir_config): quote directory names if
-	  necessary.  [ruby-talk:104505]
-
-Sat Jun 26 00:13:08 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_fopen, rb_fdopen, rb_io_reopen): setvbuf() may return
-	  positive value on failure.  [ruby-dev:23792]
-
-Fri Jun 25 18:07:15 2004  Michal Rokos  <michal@ruby-lang.org>
-
-	* gc.c: bring back _stklen for DJGPP [ruby-core:3084]
-
-Fri Jun 25 15:33:01 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/extconf.rb: check stricter.  [ruby-talk:104501]
-
-Fri Jun 25 01:58:01 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32,wince}/setup.mak: remove RUBY_EXTERN lines when
-	  including version.h. [ruby-talk:104456]
-
-Thu Jun 24 14:23:29 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_fread): return already read data when system call is
-	  interrupted.  [ruby-talk:97206]
-
-Thu Jun 24 01:25:21 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* version.h: added declarations of ruby_version,
-	  ruby_release_date, ruby_platform.
-
-Thu Jun 24 01:07:15 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_sockaddr): Socket#gethostbyname()
-	  should give us packed address, not struct sockaddr.
-	  [ruby-core:03053]
-
-Wed Jun 23 22:19:10 2004  Dave Thomas  <dave@pragprog.com>
-
-	* ext/socket/socket.c (sock_s_gethostbyaddr): Work around problem
-	  with OS X not returning 'from' parameter to recvfrom for
-	  connection-oriented sockets.
-
-Wed Jun 23 22:16:16 2004  Michal Rokos  <michal@ruby-lang.org>
-
-	* io.c: io_seek()'s retval should be checked [ruby-core:03045]
-
-Wed Jun 23 21:48:27 2004  Michal Rokos  <michal@ruby-lang.org>
-
-	* time.c: Fix indentation.
-
-	* main.c: Remove _stklen, and _CRT_glob. Move _stacksize for
-	  __human68k__ to gc.c where the others are.
-
-	* gc.c: put _stacksize in place and clean the #ifdefs macros.
-
-Wed Jun 23 17:37:54 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: added new option --ssl.
-
-Wed Jun 23 01:45:27 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RubyLex::identify_quotation):
-	  Fix problem with the 'r' being dropped from %r{xxx}
-
-Wed Jun 23 00:10:17 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_hresult2msg): remove trailing
-	  CRs and LFs. (doesn't depend on CR+LF) [ruby-dev:23749]
-
-Wed Jun 23 00:00:25 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (return_jump, break_jump): raise unexpected local jump
-	  exception directly.  [ruby-dev:23740]
-
-	* io.c (rb_io_initialize): should check fcntl result.  [ruby-dev:23742]
-
-Tue Jun 22 23:35:43 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): support FZERO and FSPACE with NaN/Inf.
-
-	* test/ruby/test_sprintf.rb (test_nan, test_inf): add tests.
-
-Tue Jun 22 21:11:36 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (OLE_FREE): should not call CoFreeUnuse-
-	  dLibraries().
-
-	* ext/win32ole/win32ole.c (ole_event_free): ditto.
-
-	* ext/win32ole/win32ole.c (ole_hresult2msg): truncate error message
-	  before CR.
-
-Tue Jun 22 19:24:59 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): unify output of NaN, Inf and -Inf with
-	  "%f" or etc on all platform. [ruby-dev:23704], [ruby-dev:23747]
-
-Tue Jun 22 15:28:12 2004  Michal Rokos  <michal@ruby-lang.org>
-
-	* compar.c: Remove explicit NIL_P() checks since rb_cmpint() does it
-	  again in the exactly same manner.
-
-Tue Jun 22 01:32:40 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_pkey_dh.c (ossl_dh_initialize): should create
-	  empty pkey object if no argument is passed. [ruby-talk:103328]
-
-	* ext/openssl/ossl_pkey_dsa.c (ossl_dsa_initialize): ditto.
-
-	* ext/openssl/ossl_pkey_rsa.c (ossl_rsa_initialize): ditto.
-
-	* ext/openssl/ossl_pkey_dh.c: add new methods: OpenSSL::PKey::DH#p,
-	  OpenSSL::PKey::DH#p=, OpenSSL::PKey::DH#g, OpenSSL::PKey::DH#g=,
-	  OpenSSL::PKey::DH#pub_key, OpenSSL::PKey::DH#pub_key=,
-	  OpenSSL::PKey::DH#priv_key and OpenSSL::PKey::DH#priv_key=.
-
-	* ext/openssl/ossl_pkey_dsa.c: add new methods: OpenSSL::PKey::DSA#p,
-	  OpenSSL::PKey::DSA#p=, OpenSSL::PKey::DSA#q, OpenSSL::PKey::DSA#q=,
-	  OpenSSL::PKey::DSA#g, OpenSSL::PKey::DSA#g=,
-	  OpenSSL::PKey::DSA#pub_key, OpenSSL::PKey::DSA#pub_key=,
-	  OpenSSL::PKey::DSA#priv_key and OpenSSL::PKey::DSA#priv_key=.
-
-Mon Jun 21 09:24:51 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_opendir): should set errno if error occurs
-	  when calling OS API.
-
-Sun Jun 20 21:12:54 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (binary=): send TYPE commands only once.
-
-Sat Jun 19 13:27:01 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (method_call): allow changing $SAFE.  [ruby-dev:23713]
-
-	* eval.c (proc_set_safe_level, proc_invoke, rb_mod_define_method): not
-	  set $SAFE for methods defined from Proc.  [ruby-dev:23697]
-
-Sat Jun 19 01:10:12 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/tdiary_plugin/rss-recent.rb: added more information.
-
-Fri Jun 18 23:12:22 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (proc_save_safe_level, rb_set_safe_level, safe_setter): limit
-	  safe level.
-
-Wed Jun 16 23:05:57 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_freeze): prepare string representation before
-	  freezing. [ruby-talk:103646]
-
-Wed Jun 16 19:57:24 2004  Michal Rokos  <michal@ruby-lang.org>
-
-	* test/ruby/test_array.rb: extend testcase to check #first, #last,
-	  #shift, #unshift, #pop, #push
-
-Wed Jun 16 16:05:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_new): move alloc behind checks.  [ruby-core:02982]
-
-	* array.c (rb_ary_pop_m, rb_ary_shift_m): take arg to behave as push
-	  and unshift.
-
-	* array.c (rb_ary_first, rb_ary_last): make shared array for result
-	  array, and correct doc for Array#first(n) and Array#last(n)
-
-	* array.c (rb_ary_select): not accept any arg.
-
-Wed Jun 16 16:03:59 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_class_inherited_p): singleton class inherits Class
-	  rather than its object's class.  [ruby-dev:23690]
-
-Wed Jun 16 16:01:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (stack_grow_direction): memoize the direction.
-
-	* gc.c (Init_stack): should always move to end of VALUE.
-
-Tue Jun 15 12:10:04 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix (TkWindow#grab)
-
-Mon Jun 14 18:23:27 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/remote-tk.rb: bug fix
-
-Sun Jun 13 00:23:04 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/extconf.rb: [EXPERIMENTAL] MacOS X (darwin) support
-
-	* ext/tcltklib/tcltklib.c: fix thread trouble on callback proc, and
-	  eliminate warning about instance variable access
-
-	* ext/tk/lib/tk/menubar.rb: improve supported menu_spec
-
-	* ext/tk/lib/tk/menuspec.rb: [add] menu_spec support library
-
-	* ext/tk/lib/tk/root.rb: add menu_spec support
-
-	* ext/tk/lib/tk/text.rb: bug fix
-
-	* ext/tk/lib/tk/toplevel.rb: add menu_spec support
-
-	* ext/tk/sample/menubar?.rb: [add] sample of menu_spec usage
-
-Sat Jun 12 14:15:20 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c: RDOC for File::FNM_CASEFOLD was missed.
-
-Sat Jun 12 11:15:53 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (target_os): strip -gnu suffix on Linux.
-
-Fri Jun 11 22:08:50 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c: remove #indexes, #indices.
-
-	* hash.c: ditto.
-
-	* ext/dbm/dbm.c: remove #indexes, #indices, "values_at" warning
-	  from #select.
-
-	* ext/gdbm/gdbm.c: ditto.
-
-	* ext/sdbm/init.c: ditto.
-
-	* ext/dbm/dbm.c (Init_dbm): set VERSION constant as "unknown" when
-	  DB_VERSION_STRING is not available.
-
-Thu Jun 10 19:19:41 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/sdbm/init.c (fsdbm_store): sdbm should use StringValue().
-	  [ruby-talk:103062]
-
-Wed Jun  9 16:09:01 2004  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic::merge,
-	  URI::Generic::route_from): accepts non-hierarchical URI.
-	  [ruby-dev:23631]
-
-	* test/uri/test_generic.rb (TestGeneric::test_route,
-	  TestGeneric::test_merge): added tests for above changes.
-
-Wed Jun  9 15:39:55 2004  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in: Add support for DragonFly BSD.
-
-Wed Jun  9 15:07:06 2004  Akinori MUSHA  <knu@iDaemons.org>
-
-	* config.guess, config.sub: Update to a more recent version as of
-	  2004-01-20.
-
-Wed Jun  9 11:20:05 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c: remove unused functions and variables.
-
-Wed Jun  2 20:16:03 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_new4): should share shared instance if it already
-	  exists.  [ruby-dev:23665]
-
-Wed Jun  2 12:41:53 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_gets_m): set lastline ($_) even when read line is
-	  nil.  [ruby-dev:23663]
-
-Fri May 28 11:20:31 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): bad influence on frame node.
-
-	* eval.c (eval): reverted wrongly removed condition.  [ruby-dev:23638]
-
-Thu May 27 21:37:50 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#initialize): fix pathname initialization
-	  by pathname.
-
-Thu May 27 20:02:09 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* io.c (rb_io_fwrite): check all case errno != 0 [ruby-dev:23648]
-
-Thu May 27 15:54:02 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (MDTM_REGEXP): fix for demon's ftp server.
-	  Thanks, Rutger Nijlunsing.
-
-Thu May 27 14:53:13 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (rb_io_fwrite): workaround for bcc32's fwrite bug.
-	  add errno checking.  [ruby-dev:23627]
-
-	* io.c (rb_io_fwrite): should check if errno == ENOENT, too.
-
-Thu May 27 11:25:03 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/csv/test_csv.rb: illegal require module name (../lib/csv.rb).
-
-Wed May 26 23:12:13 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb (CSV.read, CSV.readlines): added.  works as IO.read and
-	  IO.readlines in CSV format.
-
-	* lib/csv.rb (CSV.parse): [CAUTION] behavior changed.  in the past,
-	  CSV.parse accepts a filename to be read-opened (it was just a
-	  shortcut of CSV.open(filename, 'r')).  now CSV.parse accepts a
-	  string or a stream to be parsed e.g.
-	  CSV.parse("1,2\n3,r") #=> [['1', '2'], ['3', '4']]
-
-	* test/csv/test_csv.rb: follow above changes.
-
-Wed May 26 14:19:42 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval, eval): make line number consistent on eval with
-	  Proc.  [ruby-talk:101253]
-
-Wed May 26 13:59:17 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::skip_for_variable): Allow for
-	  'do' after for statement
-
-Wed May 26 13:56:03 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb (Generators::MarkUp::style_url): Fix
-	  relative path to code CSS file
-
-Wed May 26 13:14:52 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_init_copy): copy also positions.  [ruby-talk:100910]
-
-Wed May 26 00:00:00 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/syck.c (syck_new_parser): clear parser on init.
-	  thanks, ts. [ruby-core:02931]
-
-	* ext/syck/token.c (sycklex_yaml_utf8): buffer underflow.
-	  thanks, ts. [ruby-core:02929]
-
-	* lib/yaml/baseemitter.rb (indent_text): simpler flow block code.
-
-Tue May 25 11:54:13 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_yield_0, proc_invoke, proc_arity): allow passing a block
-	  to a Proc.  [ruby-dev:23533]
-
-	* parse.y (block_par, block_var): ditto.
-
-Tue May 25 01:50:17 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_i2d_ASN1_TYPE, ossl_ASN1_TYPE_free):
-	  workaround for the versions earlier than OpenSSL-0.9.7.
-
-Mon May 24 10:46:26 2004  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/rdoc/generators/template/html/html.rb: SYSTEM identifiers
-	  must be absolute URIs
-
-Sun May 23 04:53:50 2004  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/pstore.rb (transaction): allow overriding dump and load.
-	  [ruby-dev:23567]
-
-	* lib/yaml/store.rb: follow lib/pstore.rb's change.
-
-Sat May 22 11:54:10 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* MANIFEST: add test/openssl/test_x509store.rb.
-
-	* ext/tk/MANIFEST: add recent files.
-
-Sat May 22 05:37:11 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/remote-tk.rb: (NEW library) controll Tk interpreters
-	  on the other processes by Tcl/Tk's 'send' command
-
-Fri May 21 09:22:05 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_method_parameters):
-	  Add ()'s around parameters that don't have them
-
-Fri May 21 02:21:11 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb: fixed a few bugs around multi char record/field separator.
-
-	* test/csv/test_csv.rb: added boundary test for above feature.
-
-Thu May 20 17:02:03 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (check_sizeof): define result size.  [ruby-core:02911]
-
-	* lib/mkmf.rb (create_header): macro name should not include equal
-	  sign.
-
-Thu May 20 14:35:52 2004  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c: check SCM_RIGHTS macro addition to
-	  the msg_control field to test existence of file descriptor passing
-	  by msg_control.
-
-Thu May 20 12:38:06 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_eq): always check if operands are NaN.
-	  [ruby-list:39685]
-
-Thu May 20 12:34:39 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_visibility):
-	  At Ryan Davis' suggestion, honor visibility modifers if guarded by a
-	  statement modifier
-
-Thu May 20 12:22:13 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_type): do not check pointer to incomplete type,
-	  which always get compiled.
-	  [ruby-list:39683]
-
-Wed May 19 23:45:43 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/inlinetest.rb (InlineTest::loadtest): requiring library with
-	  replaced $0 can make $0 == __FILE__ block be evaluated twice.
-
-	* test/ruby/envutil.rb (EnvUtil::rubybin): give priority to
-	  environment variable.  [ruby-dev:23538]
-
-Wed May 19 11:08:10 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: change permition of TkObject#tk_send from
-	  private to public
-
-Wed May 19 02:29:36 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: support TRACE.
-
-Wed May 19 02:21:53 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: do not use class variables.
-
-Tue May 18 21:21:43 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb: writes lines with "\n" when row separator is not given.
-	  formerly it was "\r\n".
-
-	* lib/csv.rb: [CAUTION] API change
-
-	  * CSV::Row removed.  a row is represented as just an Array.  since
-	    CSV::Row was a subclass of Array, it won't hurt almost all programs
-	    except one which depended CSV::Row#match.
-
-	  * CSV::Cell removed.  a cell is represented as just a String or
-	    nil(NULL).  this change will cause widespread destruction.
-
-	      CSV.open("foo.csv", "r") do |row|
-		row.each do |cell|
-		  if cell.is_null       # Cell#is_null
-		    p "(NULL)"
-		  else
-		    p cell.data		# Cell#data
-		  end
-		end
-	      end
-
-	    must be just;
-
-	      CSV.open("foo.csv", "r") do |row|
-		row.each do |cell|
-		  if cell.nil?
-		    p "(NULL)"
-		  else
-		    p cell
-		  end
-		end
-	      end
-
-	* lib/csv.rb: [CAUTION] record separator(CR, LF, CR+LF) behavior
-	  change.  CSV.open, CSV.parse, and CSV,generate now do not force
-	  opened file binmode.  formerly it set binmode explicitly.
-
-	  with CSV.open, binmode of opened file depends the given mode
-	  parameter "r", "w", "rb", and "wb".  CSV.parse and CSV.generate open
-	  file with "r" and "w".
-
-	  setting mode properly is user's responsibility now.
-
-	* lib/csv.rb: accepts String as a fs (field separator/column separator)
-	  and rs (record separator/row separator)
-
-	* lib/csv.rb: added CSV.foreach(path, rs = nil, &block).  CSV.foreach
-	  now does not handle "| cmd" as a path different from IO.foreach.
-	  needed?
-
-	* test/csv/test_csv.rb: updated.
-
-Tue May 18 14:24:20 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml.rb: added rdoc to beginning of lib.
-
-Tue May 18 14:00:46 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* node.h (NEW_DSTR): adjust list length.
-
-	* parse.y (literal_concat): ditto.
-
-Tue May 18 09:30:25 2004  SASADA Koichi  <ko1@atdot.net>
-
-	* eval.c (rb_method_node): search cache entry first.
-
-Mon May 17 16:04:06 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* numeric.c (flo_to_s): it's preferable that "p 0.0" outputs "0.0"
-	  instead of "0.0e+00". [ruby-dev:23480]
-
-	* numeric.c (flo_to_s): it's preferable that "p 0.00000000000000000001"
-	  outputs "1.0e-20" instead of "9.999999999999999e-21". (the precision
-	  is considered, but there is assumption DBL_DIG == 15 in current
-	  implementation)
-
-Mon May 17 10:13:33 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (setup_domain_and_type): honor duck typing.
-	  [ruby-dev:23522]
-
-	* ext/socket/socket.c (sock_s_getnameinfo): ditto.
-
-Mon May 17 00:36:21 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/baseemitter.rb (indent_text): was forcing a mod value
-	  of zero at times, which kept some blocks from getting indentation.
-
-Mon May 17 00:07:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/drb/drb.rb: Cosmetic documentation changes.
-
-Sun May 16 20:55:49 2004  Tanaka Akira  <akr@m17n.org>
-
-	* ext/dbm/dbm.c (fdbm_initialize): accept optional 3rd argument to
-	  specify an open flag.
-	  (Init_dbm): define open flags: DBM::READER, DBM::WRITER, DBM::WRCREAT
-	  and DBM::NEWDB.
-
-Sat May 15 17:52:24 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_float.rb(test_strtod): Add test for signed 0.000...1
-
-Sat May 15 14:20:13 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/syck/depend: add ruby's headers.
-
-Sat May 15 13:38:33 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/MANIFEST, ext/syck/depend: new file.
-
-	* lib/yaml/rubytypes.rb: range of exponential floats.  [ruby-core:02824]
-
-	* test/yaml/test_yaml.rb: tests for strings start with colon and some
-	  round trip.
-
-Sat May 15 12:04:58 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml.rb: removed fallback to pure Ruby parser.
-
-	* lib/yaml/baseemitter.rb (node_text): rewriting folded scalars.
-
-	* ext/syck/syck.h: reports style of scalars now, be they plain, block
-	  single-, or double-quoted.
-
-	* ext/syck/syck.c: ditto.
-
-	* ext/syck/gram.c: ditto.
-
-	* ext/syck/node.c: ditto.
-
-	* ext/syck/token.c: ditto.
-
-	* ext/syck/rubyext.c (yaml_org_handler): symbols loaded only
-	  if scalar style is plain.
-
-	* test/yaml/test_yaml.rb (test_perl_regexp): updated test to
-	  match new regexp serialization.
-
-Sat May 15 01:41:34 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (eval): forgot to restore $SAFE value before evaluating
-	  compiled node.  [ruby-core:02872]
-
-Sat May 15 01:33:12 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_each_func): terminates loop if generating value
-	  is same to @end.  [ruby-talk:100269]
-
-Fri May 14 22:08:38 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_new4): should not reuse frozen shared string if
-	  the original is not an instance of String. [ruby-talk:100193]
-
-Fri May 14 21:29:26 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_mdump): preserve GMT bit in the marshal data.
-	  [ruby-talk:100213]
-
-Fri May 14 18:37:49 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/canvas.rb: improve coords support for canvas
-	  items. Now, supports all of the followings.
-	       TkcLine.new(c, 0, 0, 100, 100, :fill=>'red')
-	       TkcLine.new(c, [0, 0, 100, 100], :fill=>'red')
-	       TkcLine.new(c, [0, 0], [100, 100], :fill=>'red')
-	       TkcLine.new(c, [[0, 0], [100, 100]], :fill=>'red')
-	       TkcLine.new(c, :coords=>[0, 0, 100, 100], :fill=>'red')
-	       TkcLine.new(c, :coords=>[[0, 0], [100, 100]], :fill=>'red')
-
-Fri May 14 13:30:39 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* test/ruby/test_float.rb: Add test for util.c revision 1.42.
-
-Fri May 14 12:13:46 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* util.c (ruby_strtod): strtod("0", &end); => end should point '\0'.
-	 [ruby-dev:23498]
-
-Thu May 13 15:47:30 2004  akira yamada  <akira@ruby-lang.org>
-
-	* lib/net/telnet.rb (Net::Telnet::login): "options" can specify
-	  regexps for login prompt and/or password prompt.
-
-Thu May 13 14:17:57 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c (yaml_org_handler): some empty strings were
-	  loaded as symbols.
-
-Thu May 13 11:04:08 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_pack): always add with null for 'Z'.
-
-	* pack.c (pack_unpack): terminated by null for 'Z'.  [ruby-talk:98281]
-
-Wed May 12 19:59:43 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_type, check_sizeof): replace unusable characters.
-	  [ruby-talk:99788]
-
-Wed May 12 17:41:42 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Config): make it configurable without
-	  external file such as /etc/resolv.conf.
-
-Wed May 12 14:37:27 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509name.c: attribute value of DC (short name of
-	  domainComponent) should be IA5String.
-
-Wed May 12 13:20:19 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/composite.rb: improve configure methods (based on
-	  the proposal of [ruby-talk:99671]).
-
-Wed May 12 11:51:08 2004  Dave Thomas  <dave@pragprog.com>
-
-	* class.c (rb_obj_singleton_methods): fix rdoc
-
-Tue May 11 07:09:42 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): do not protect exception during receiver
-	  evaluation.
-
-Mon May 10 22:28:14 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb (each_crlf_line): remove junk line.
-
-Mon May 10 21:44:42 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb: Change scheme for
-	  looking up symbols in  HTML generator.
-
-Mon May 10 16:45:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (eval): warning during eval should not cause deadlock.
-	  [ruby-talk:98651]
-
-	* eval.c (rb_eval): raise TypeError exception for superclass
-	  mismatch.  [ruby-list:39567]
-
-Mon May 10 12:11:37 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb: Hack to search parents
-	  for unqualified constant names.
-
-Mon May 10 01:18:15 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb (logging): append "\n".
-
-Sun May  9 23:38:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/net/ftp.rb: ported documentation improvement from 1.8 branch
-
-	* lib/net/imap.rb:   ditto
-
-	* lib/net/pop.rb:    ditto
-
-	* lib/net/smtp.rb:   ditto
-
-	* lib/net/telnet.rb: ditto
-
-Sun May  9 23:34:51 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_float.rb: added test_strtod to test Float("0").
-
-Sun May  9 13:24:24 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/yaml/store.rb: use FileUtils::copy.
-
-Sun May  9 12:34:26 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regex.c: removed unused file.
-
-Sat May  8 10:53:30 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_open): open should not ignore block when "to_open"
-	  method is used.  [ruby-dev:23478]
-
-Fri May  7 22:07:39 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mv): new option `force'. [ruby-talk:99457]
-
-	* lib/fileutils.rb: new method for command option reflection:
-	  FileUtils.commands, .options, .have_option?, .options_of,
-	  .collect_methods.
-
-	* lib/fileutils.rb: module Verbose, NoWrite, DryRun do not have
-	  option flags @fileutils_verbose and @fileutils_noop, they make no
-	  sense.
-
-Fri May  7 21:50:21 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::parse_include): Allow
-	  multiple arguments to 'include'
-
-Fri May  7 21:03:51 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_list): Array() breaks pathes including "\n".
-	  [ruby-core:02843]
-
-	* test/fileutils/test_fileutils.rb (mkdir): test "\n" in path.
-
-Fri May  7 20:53:25 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/dbm.c (fdbm_modify): typo fixed. [ruby-dev:23473]
-
-Fri May  7 11:17:27 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* util.c (ruby_strtod): "0.0000000000000000001" should be converted
-	  to 1.0e-19 instead of 0.0. (leading zeros aren't significant digits)
-	  [ruby-talk:99318] [ruby-dev:23465]
-
-Thu May  6 22:27:32 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* ext/socket/socket.c (ippaddr): use NUMERICHOST if can not resolve
-	  hostname.
-
-Thu May  6 22:09:29 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tkutil.c (get_eval_string_core): bug fix. [ruby-dev:23466]
-
-Thu May  6 14:22:29 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb (to_yaml): added instance variable handling
-	  for Ranges, Strings, Structs, Regexps.
-
-	* lib/yaml/rubytypes.rb (to_yaml_fold): new method for setting a
-	  String's flow style.
-
-	* lib/yaml.rb (YAML::object_maker): now uses Object.allocate.
-
-	* ext/syck/gram.c: fixed transfer methods on structs, broke it
-	  last commit.
-
-Thu May  6 14:38:02 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (rb_push_glob): simplified code (not change behavior)
-
-Thu May  6 13:32:44 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: get rid of side effect of Config.expand, patched by
-	  <tttt01@infoseek.jp>  (ruby-bugs:PR#597)
-
-Thu May  6 11:40:28 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (string): accept NIL.
-
-	* lib/net/imap.rb (body_type_basic): allow body-fields omissions.
-
-Thu May  6 01:59:04 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb (Generators::HtmlMethod::params):
-	  Don't include the &block parameter if we have explicit
-	  yield parameters.
-
-Wed May  5 03:52:31 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/ring.rb: use recv instead of recvfrom.
-
-Wed May  5 00:38:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/gserver.rb: documented
-	* lib/xmlrpc/README.txt: introduced for documentation purposes
-
-Mon May  3 09:47:24 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_method_or_yield_parameters):
-	  Fix parsing bug if yield called within 1 line block
-
-Sun May  2 21:56:48 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb (rm_f, rm_r): test :force flag.
-
-Sun May  2 01:04:38 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib, ext/tk: renewal Ruby/Tk
-
-Fri Apr 30 20:08:41 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* time.c (SIZEOF_TIME_T): support SIZEOF_TIME_T == SIZEOF_INT.
-
-Wed Apr 28 01:26:11 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* oniguruma.h, regparse.c: imported Oni Guruma 2.2.8.
-
-Wed Apr 28 01:16:23 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* oniguruma.h, regparse.c: imported Oni Guruma 2.2.7.
-
-Tue Apr 27 14:43:32 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: LIBURUBY_A is needed for extconf.rb even when
-	  cross-compiling.
-
-Tue Apr 27 13:33:50 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (string_content): turn off NODE_NEWLINE flag to avoid
-	  unnecessary line trace for inlined expression.
-	  (ruby-bugs PR#1320)
-
-Tue Apr 27 08:15:13 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: passing Range tests.
-
-	* ext/syck/syck.h: version 0.44.
-
-	* ext/syck/gram.c: transfers no longer open an indentation.
-	  fixed transfers which precede blocks.
-
-	* ext/syck/token.c: ditto.
-
-	* ext/syck/syck.c: fixed segfault if an anchor has been released already.
-
-	* ext/syck/node.c (syck_free_members): organized order of free'd nodes.
-
-	* ext/syck/rubyext.c (syck_emitter_write_m): test for proper string with
-	  StringValue.
-
-Mon Apr 26 23:56:54 2004  Daniel Kelley  <news-1082945587@dkelley.gmp.san-jose.ca.us>
-
-	* README.EXT, README.EXT.ja: fixed wrong function signature.
-	  [ruby-talk:98349]
-
-Mon Apr 26 21:40:09 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/code_objects.rb (RDoc::Context::add_alias): Only alias
-	  to instance methods.
-
-Sun Apr 25 18:26:23 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (ac_cv_func_fork): set to no on DJGPP.
-
-Sat Apr 24 14:32:03 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* re.c: applied stack error handling patch. [ruby-dev:23431]
-
-Sat Apr 24 10:38:31 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/markup/simple_markup.rb (SM::SimpleMarkup::group_lines):
-	  Fix bug where consecutive headings are merged.
-
-Fri Apr 23 23:24:47 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: $hdrdir should not contain macros, for backward
-	  compatibility.  [bruby-dev:28]
-
-	* lib/mkmf.rb (create_makefile): in the case of extout, just copy
-	  script files, without comparison.
-
-Fri Apr 23 16:38:46 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb: sync taint/freeze flag between
-	  a pathname object and its internal string object.
-
-Fri Apr 23 14:52:14 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt, arg, aref_args): should not make sole splat into
-	  array, in aref_args other than aref with op_asgn.
-
-Fri Apr 23 14:14:38 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb: don't use Regexp#source to embed regexps.
-	  [ruby-dev:23432]
-
-Thu Apr 22 18:25:10 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, ext/extmk.rb: make ext and .ext get removed by distclean.
-
-Thu Apr 22 10:07:01 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* */Makefile.sub (distclean-local): should remove $(RBCONFIG).
-
-Thu Apr 22 04:17:57 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_mod_define_method): allow binding methods to modules.
-	  [ruby-dev:23410]
-
-	* parse.y (aref_args): should pass expanded list.  [ruby-core:02793]
-
-Thu Apr 22 01:12:57 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_to_s): tweak output string based to preserve
-	  decimal point and to remove trailing zeros.  [ruby-talk:97891]
-
-	* string.c (rb_str_index_m): use unsigned comparison for T_FIXNUM
-	  search.  [ruby-talk:97342]
-
-Wed Apr 21 23:04:42 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/rinda.rb, test/rinda/test_rinda.rb: check Hash tuple size.
-
-Wed Apr 21 20:05:00 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::HTTP#proxy_open): set Host: field explicitly.
-	  [ruby-list:39542]
-
-Wed Apr 21 18:39:46 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: merge SMTP-TLS patch.  This patch is
-	  contributed by Daniel Hob. [ruby-core:02789]
-
-Wed Apr 21 18:23:45 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: change coding style: def m( a ) -> def m(a).
-
-Wed Apr 21 18:01:47 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: do not use class variables.
-
-	* lib/net/pop.rb (do_start): ensure to clean up connection when
-	  authentication failed.
-
-Wed Apr 21 17:23:59 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTP#connect): CONNECT must precede SSL connect.
-	  [ruby-dev:23379]
-
-	* lib/net/http.rb (HTTP.new): class variables are not inherited
-	  now.
-
-Wed Apr 21 15:56:43 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/ui/console/testrunner.rb (test_started): restore $0
-	  after changing process title.  [ruby-talk:97426]
-
-Wed Apr 21 10:18:06 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* process.c(rb_spawn): fix SEGV at "p system('command line here')"
-	 (may happen only in bccwin32) [ruby-dev:23380]
-
-Mon Apr 19 20:58:44 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c: Updated RDocs.
-
-Mon Apr 19 18:11:15 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_equal): returns true if two hashes have same set
-	  of key-value set.  [ruby-talk:97559]
-
-	* hash.c (rb_hash_eql): returns true if two hashes are equal and
-	  have same default values.
-
-Mon Apr 19 08:19:11 2004  Doug Kearns  <djkea2@mugca.its.monash.edu.au>
-
-	* dln.c, io.c, pack.c, lib/benchmark.rb, lib/cgi.rb, lib/csv.rb,
-	  lib/date.rb, lib/ftools.rb, lib/getoptlong.rb, lib/logger.rb,
-	  lib/matrix.rb, lib/monitor.rb, lib/set.rb, lib/thwait.rb,
-	  lib/timeout.rb, lib/yaml.rb, lib/drb/drb.rb, lib/irb/workspace.rb,
-	  lib/net/ftp.rb, lib/net/http.rb, lib/net/imap.rb, lib/net/pop.rb,
-	  lib/net/telnet.rb, lib/racc/parser.rb, lib/rinda/rinda.rb,
-	  lib/rinda/tuplespace.rb, lib/shell/command-processor.rb,
-	  lib/soap/rpc/soaplet.rb, lib/test/unit/testcase.rb,
-	  lib/test/unit/testsuite.rb: typo fix.
-
-Mon Apr 19 08:14:18 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::find_body): Allow for
-	  #ifdef HAVE_PROTOTYPES
-
-Fri Apr 16 17:04:07 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_equal): always returns true or false, never
-	  returns nil. [ruby-dev:23404]
-
-Fri Apr 16 12:38:48 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/drb/drb.rb (DRb::DRbUnknown::initialize): Exception#to_str is
-	  deprecated.
-
-	* lib/drb/drb.rb (DRb::DRbServer::InvokeMethod::perform): multiple
-	  value class changed.
-
-	* lib/drb/invokemethod.rb (DRb::DRbServer::InvokeMethod18Mixin::block_yield):
-	  ditto.
-
-Fri Apr 16 08:27:08 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: skip linking when libraries to be preloaded not
-	  compiled.  [ruby-list:39561]
-
-Thu Apr 15 19:57:11 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (pst_success_p): new method Process::Status#success?.
-	  [ruby-dev:23385]
-
-	* rubytest.rb: do nothing while cross-compiling, return status in
-	  system independent style.
-
-Thu Apr 15 19:26:54 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (rb_push_glob): Dir.glob() should return nil if block is given.
-	  (http://www.ruby-lang.org/ja/man/index.cgi?cmd=view;name=Dir)
-
-	* dir.c (push_braces): Dir.glob() should handle '{ }' nested more than
-	  3 times.
-
-	* dir.c (push_braces, rb_push_glob): Dir.glob() should handle escaped
-	  '{' and '}' and ','.
-
-	  [ruby-dev:23376]
-
-Thu Apr 15 17:12:13 2004  Tanaka Akira  <akr@m17n.org>
-
-	* ext/gdbm/gdbm.c (Init_gdbm): define GDBM::READER, GDBM::WRITER,
-	  GDBM::WRCREAT and GDBM::NEWDB.
-	  (fgdbm_initialize): use specified read/write flag.
-
-Wed Apr 14 13:06:09 2004  Doug Kearns  <djkea2@mugca.its.monash.edu.au>
-
-	* array.c, enum.c, eval.c, file.c, io.c, numeric.c, object.c, prec.c,
-	  process.c, re.c, string.c: typos in RDoc comments.  [ruby-core:02783]
-
-Wed Apr 14 11:29:56 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* numeric.c (flo_eq): workaround for bcc32's bug.
-	  (ruby-bugs-ja:PR#594)
-
-Wed Apr 14 11:06:38 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::scan): Changed
-	  behavior of :enddoc: -- it now unconditionally terminates
-	  processing of the current file.
-
-Wed Apr 14 10:57:40 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* defines.h: include <net/socket.h> to get fd_set definition in BeOS.
-
-Tue Apr 13 23:00:55 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/rinda.rb: change pattern matching.
-	  a === b -> a == b || a === b. [druby-ja:98]
-
-	* test/rinda/test_rinda.rb: ditto.
-
-Tue Apr 13 21:50:57 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bcc32/Makefile.sub (PHONY): Borland make disallows empty command
-	  rules.
-
-Tue Apr 13 17:55:16 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (begin_transport): should not overwrite HTTP
-	  request header. [ruby-list:39543]
-
-Tue Apr 13 16:48:00 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: merge POP3S patch.  This patch is contributed by
-	  Daniel Hobe.
-
-Tue Apr 13 02:56:29 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* common.mk: changed the order of ascii.c alphabetically.
-
-Mon Apr 12 19:11:21 2004  Eric Hodel  <drbrain@segment7.net>
-
-	* gc.c (rb_gc_copy_finalizer): typo.  [ruby-core:02774]
-
-Mon Apr 12 18:45:58 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_init_i): should return
-	  a value.
-
-Mon Apr 12 10:39:50 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (rb_glob2, rb_glob, push_globs, push_braces, rb_push_glob):
-	  fix memory leak. (leaked when block was interrupted)
-
-Sun Apr 11 19:10:13 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (require_libraries): restore source file/line after
-	  statically linked extensions initialized.  [ruby-dev:23357]
-
-Sun Apr 11 10:47:04 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/code_objects.rb (RDoc::TopLevel::add_class_or_module): Toplevel
-	  classes and modules are a special case too... (handle extending existing
-	  classes with or without :enddoc:)
-
-Sat Apr 10 23:51:13 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/code_objects.rb (RDoc::Context::add_to): Implementation of :enddoc:
-	  made one too many assumptions...
-
-Sat Apr 10 00:00:19 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/markup/simple_markup/inline.rb: Fix problem
-	  with \_cat_<b>dog</b>
-
-Fri Apr  9 17:05:21 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (has_magic, find_dirsep): incomplete '[' matches no character
-	  in Dir.glob. (follows File.fnmatch's behavior)
-
-	* dir.c (fnmatch_helper): incomplete escape is ignored in File.fnmatch.
-	  (follows Dir.glob's behavior)
-
-	* dir.c (find_dirsep): '/' between '[' and ']' is ignored in Dir.glob.
-	  (follows File.fnmatch with File::FNM_PATHNAME 's behavior)
-
-	* dir.c (find_dirsep): escaped slash '\/' loses its meaning as
-	  directory separator in Dir.glob.
-
-	  [ruby-dev:23291]
-
-Thu Apr  8 20:25:19 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): skip uncompiled extensions.
-
-	* lib/mkmf.rb (create_makefile): emit no rules for static library if
-	  $static is nil, e.g., outside of ext/.
-
-	* lib/test/unit/ui/console/testrunner.rb (test_started): show test
-	  name via $0.
-
-	* runruby.rb: set environments to use the compiled binary.
-
-	* test/runner.rb: do nothing while cross-compiling.
-
-	* test/drb/drbtest.rb, test/soap/calc/test_calc_cgi.rb: use envutil to
-	  know ruby binary, and restore $: after require.
-
-	* test/ruby/envutil.rb: give priority to RUBY environment variable to
-	  use just compiled binary and libraries.
-
-Thu Apr  8 19:03:33 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_binmode): inverted condition.  [ruby-dev:23349]
-
-Thu Apr  8 18:22:00 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_s_list): return encoding list if no block
-	  is given.  [ruby-dev:23063]
-
-Wed Apr  7 15:29:24 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): use NUM2INT() instead of num2i32().
-
-Wed Apr  7 12:32:02 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb, lib/rss/1.0.rb: accepted rdf:resource or
-	  resource attribute in rdf:li.
-	* test/rss/test_parser.rb: added test for above change.
-
-	* lib/rss/dublincore.rb: reverted style.
-
-	* lib/rss/xmlparser.rb: normalized XMLParser class hierarchy.
-
-Wed Apr  7 10:43:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk, */Makefile.sub (ext/extinit.o): OUTFLAG
-	  doesn't work for object files on VC.
-
-	* */Makefile.sub (config.h): need SIZEOF_TIME_T now.
-
-Wed Apr  7 00:24:34 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/rinda.rb: fix hash tuple bug.
-
-	* lib/rinda/tuplespace.rb: ditto.
-
-	* test/rinda/test_rinda.rb
-
-Tue Apr  6 18:24:18 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_get_path): get path string via "to_path" method if
-	  path object is not a string. [Ruby2]
-
-	* gc.c (rb_gc_call_finalizer_at_exit): do not free threads in the
-	  exit finalizers.
-
-	* io.c (rb_io_reopen): should use rb_io_check_io().
-
-Tue Apr  6 16:46:09 2004  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in: check the size of time_t.
-
-	* time.c (time_add): new function.
-	  (time_plus): use time_add.
-	  (time_minus): use time_add.
-
-Tue Apr  6 13:11:48 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (raise_socket_error): never return.
-
-	* ext/socket/socket.c (make_hostent): must return value.
-
-Tue Apr  6 00:14:43 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (Init_Exception): remove Exception#to_str. [Ruby2]
-
-	* eval.c (error_print): should no call "to_str" anymore use
-	  "message" method instead.
-
-	* io.c (rb_f_open): Kernel#open() calls "to_open" if the first
-	  argument responds to it. [Ruby2]
-
-Tue Apr  6 00:13:43 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/rinda.rb: add require 'drb/drb'
-
-Mon Apr  5 22:25:32 2004  Tanaka Akira  <akr@m17n.org>
-
-	* test/zlib/test_zlib.rb: new file.
-	  (TestZlibGzipWriter#test_new_nil): test for [ruby-dev:23228].
-
-Mon Apr  5 22:16:23 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (assoc_list): {a: 1, b: 2} should be allowed.
-	  [ruby-dev:23328]
-
-Mon Apr  5 19:43:40 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regexec.c: imported Oni Guruma 2.2.6.
-
-Mon Apr  5 19:39:10 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* regparse.c, oniguruma.h: imported Oni Guruma 2.2.6.
-
-Mon Apr  5 12:12:09 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (raise_socket_error): some platforms don't have
-	  EAI_SYSTEM.
-
-Mon Apr  5 08:18:23 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/rdoc.rb: Remove leading ./ from file names so that cross
-	  references work properly.
-
-Sun Apr  4 14:01:20 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/options.rb (Options::parse): Allow multiple -x options to
-	  RDoc. Fix bug where files weren't being excluded properly
-
-Sat Apr  3 09:36:38 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/syck.h: version 0.43.
-
-Sat Apr  3 08:28:47 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/lib/gram.c: allow root-level inline collections.
-	  [ruby-talk:94922]
-
-	* lib/yaml/rubytypes.rb (Symbol#to_yaml): emit symbols as implicits.
-	  [ruby-talk:94930]
-
-Fri Apr  2 19:28:48 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bcc32/Makefile.sub (OUTFLAG): needed for static-linked-ext.
-
-Fri Apr  2 18:00:05 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): extract necessary variables for static link
-	  from Makefile.
-
-	* lib/mkmf.rb (create_makefile): save preload and libpath for next
-	  compile.
-
-Fri Apr  2 17:27:17 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (top_include): include in the wrapped load is done for
-	  the wrapper, not for a singleton class for wrapped main.
-	  [ruby-dev:23305]
-
-Fri Apr  2 15:13:44 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_eq): use temporary double variable to save the
-	  result (internal float register may be bigger than 64 bits, for
-	  example, 80 bits on x86).  [ruby-dev:23311]
-
-Fri Apr  2 14:35:26 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): should generate unique identifier of the
-	  pushing block.  [ruby-talk:96363]
-
-Fri Apr  2 11:36:20 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* eval.c (Init_load): make $LOADED_FEATURES built-in.
-	  [ruby-dev:23299]
-
-	* ruby.c (ruby_prog_init): make $PROGRAM_NAME built-in.
-
-	* lib/English.rb: remove $LOADED_FEATURES and $PROGRAM_NAME.
-
-Fri Apr  2 07:31:38 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: mistakingly removed do_not_reverse_lookup.
-	  [ruby-list:39475]
-
-	* ext/socket/socket.c (make_hostent): fix memory leak, based on
-	  the patch from HORIKAWA Hisashi <vzw00011@nifty.ne.jp>.
-
-Thu Apr  1 22:55:33 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb: Allow rdoc comments in
-	  =begin rdoc/=end
-
-	* lib/rdoc/parsers/parse_rb.rb: Fix problem with comment in
-	  top-level method being taken as file comment.
-
-Thu Apr  1 22:55:04 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_options.rb: Fix undefined variable warning.
-
-Thu Apr  1 19:58:37 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/mapping/{factory.rb,registry.rb}: fixed illegal mapped URI
-	  object with soap/marshal.
-	  added URIFactory class for URI mapping.  BasetypeFactory checks
-	  instance_variables when original mapping is not allowed (ivar must
-	  be empty).  Instance of URI have instance_variables but it must be
-	  llowed whenever original mapping is allowed or not.
-
-Wed Mar 31 19:06:23 2004  Tanaka Akira  <akr@m17n.org>
-
-	* time.c (year_leap_p): new function.
-	  (timegm_noleapsecond): ditto.
-	  (search_time_t): use timegm_noleapsecond instead of
-	  mktime for first guess.
-
-Wed Mar 31 12:05:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/delegate.rb (DelegateClass): define internal methods of the
-	  result class, but not metaclass of the caller.  [ruby-talk:96156]
-
-	* intern.h: provide proper prototypes.  [ruby-core:02724]
-
-	* ruby.h: missing.h is now prerequisite to intern.h.
-
-Wed Mar 31 11:17:16 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): raises RangeError if uv is out of UTF8 value
-	  range.  [ruby-dev:23281]
-
-	* io.c (rb_io_binmode): stdio buffer should be empty when calling
-	  IO#binmode.  [ruby-talk:96155]
-
-Tue Mar 30 20:25:34 2004  Tanaka Akira  <akr@m17n.org>
-
-	* time.c (search_time_t): limit guess range by mktime if it is
-	  available.  [ruby-dev:23274]
-
-Tue Mar 30 18:19:00 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): fix SEGV at retry in iterator's receiver.
-	  [ruby-dev:23227]
-
-Mon Mar 29 20:17:16 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_exec): follow older behavior if close-on-exec is not
-	  available.
-
-	* process.c (rb_fork): protect from exceptions while waiting failed
-	  process, if status is given.
-
-Sun Mar 28 16:25:37 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (clean-local, distclean-local): remove
-	  work files.
-
-	* win32/Makefile.sub (clean-local): ditto.
-
-Sun Mar 28 14:23:02 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: def m( arg ) -> def m(arg).
-
-Sun Mar 28 14:09:13 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb (auth): failed when account/password include "%".
-	  [ruby-talk:95933]
-
-Sat Mar 27 21:40:41 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: permit extra semicolon in content-type field.
-
-Sat Mar 27 10:40:48 2004  Tanaka Akira  <akr@m17n.org>
-
-	* (lib/pp.rb, lib/prettyprint.rb): define seplist in PP::PPMethods
-	  instead of PrettyPrint.
-
-Sat Mar 27 01:47:09 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: trim tail space of each line.  no user visible change.
-
-	* lib/rss/dublincore.rb: fixed class definition mismatch.
-
-	* sample/openssl/gen_csr.rb: fixed wrong usage text.
-
-Thu Mar 25 23:15:24 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_options.rb (RI::Options::show_version):
-	  Add --version option
-
-Thu Mar 25 21:45:00 2004  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c: Bug in + and - reported by Bret Jolly
-	  fixed.
-
-Thu Mar 25 21:01:32 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.c (ruby_show_copyright): obtain copyright year from
-	  RUBY_RELEASE_YEAR.
-
-	* win32/resource.rb: ditto.
-
-Thu Mar 25 19:37:35 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/resource.rb: default rubyw icon to ruby.ico, and let DLL also
-	  include them.
-
-	* win32/resource.rb: include winver.h for older WindowsCE.
-
-Thu Mar 25 14:01:03 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, */Makefile.sub (lib, dll): phony targets.
-
-	* configure.in (ruby, miniruby): ditto.
-
-	* cygwin/GNUmakefile.in (rubyw): ditto.
-
-Thu Mar 25 04:16:18 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_options.rb (RI::Options): Add the --list-names option,
-	  which dumps our all known names
-
-Thu Mar 25 03:57:47 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_util.rb (NameDescriptor::initialize): No longer
-	  allow nested classes to be designated using "."--you must
-	  now use "::"
-
-Thu Mar 25 02:00:18 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/template/html/one_page_html.rb (Page):
-	  Fix to work with C modules.
-
-Wed Mar 24 20:49:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/uri.rb: Documented (thanks Dmitry V. Sabanin).
-	* lib/uri/common.rb: Ditto.
-	* lib/uri/ftp.rb: Ditto.
-	* lib/uri/generic.rb: Ditto.
-	* lib/uri/http.rb: Ditto.
-	* lib/uri/https.rb: Ditto.
-	* lib/uri/ldap.rb: Ditto.
-	* lib/uri/mailto.rb: Ditto.
-
-Wed Mar 24 18:48:05 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb ($ruby, $topdir, $hdrdir): should not be affected by
-	  DESTDIR after installed.
-
-	* lib/mkmf.rb (dummy_makefile): default file lists to be cleaned.
-
-Wed Mar 24 12:32:56 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::handle_class_module):
-	  Don't document methods if we don't know for sure the
-	  class or module.
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_class):
-	  Don't store documentation for singleton classes if we
-	  don't know the real class.
-
-Wed Mar 24 11:11:26 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb (Generators::HTMLGenerator::load_html_template):
-	  Allow non-RDoc templates by putting a slash in the template name
-
-Wed Mar 24 10:05:22 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile::_close): should not clear @tmpname
-	  until the file is really removed. [ruby-core:02684]
-
-Wed Mar 24 04:12:44 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_cvar_get): new method Module#class_variable_get.
-
-	* object.c (rb_mod_cvar_set): ditto (Module#class_variable_set).
-
-Tue Mar 23 17:45:22 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_atfork): 1.9 warns no more for thread
-	  termination.  [ruby-dev:23212]
-
-Tue Mar 23 14:46:10 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, */Makefile.sub, common.mk (clean-local, distclean-local):
-	  separate files under directories due to directory separator.
-
-	* */Makefile.sub (MKFILES): common.mk and */Makefile.sub should not be
-	  removed.
-
-	* win32/Makefile.sub, wince/Makefile.sub: $* cannot appear in explicit
-	  rules.
-
-	* cygwin/GNUmakefile.in: some mingw stuffs were missed.
-
-	* lib/mkmf.rb (create_makefile): Borland make wrongly removes braces
-	  from command lines.
-
-	* bcc32/Makefile.sub: needs bcc32/mkexports.rb.
-
-Mon Mar 22 08:21:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, */Makefile.sub, common.mk: extract common portions.
-
-	* Makefile.in, cygwin/GNUmakefile.in, */Makefile.sub (RBCONFIG):
-	  separated time stamp file for rbconfig.rb.
-
-	* configure.in: append common.mk to Makefile.
-
-	* mkconfig.rb: keep mtime of rbconfig.rb if unchanged.
-
-	* win32/rm.bat: remove multiple files.
-
-	* wince/mkconfig_wce.rb: use fake.rb instead.
-
-Sun Mar 21 22:17:35 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#virtual_host):
-	  sort @virtual_hosts in address, port, host order.
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#lookup_server):
-	  hostname should not be match if :ServerAlias is not given.
-
-Sun Mar 21 21:11:16 2004  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/shell/*: bug fix for Shell#system(command_line_string).
-
-Sun Mar 21 21:04:42 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ruby.1: add -width option to .Bl for old groff.
-
-Sun Mar 21 18:57:37 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/*: Test::Unit::TestCase -> RSS::TestCase and
-	  Test::Unit::Assertions -> RSS::Assertions.
-
-Sun Mar 21 18:48:20 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/{rss,dublincore,syndication}.rb: handled W3CDTF correctly.
-
-Sun Mar 21 18:15:29 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_xml-stylesheet.rb: added tests for xml-stylesheet.
-
-	* lib/rss/xml-stylesheet.rb: added xml-stylesheet parsing
-	  function.
-
-Sat Mar 20 23:51:03 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* eval.c (rb_require_safe): preserve old ruby_errinfo.
-	  [ruby-talk:95409]
-
-	* eval.c (rb_f_raise): should not clear backtrace information if
-	  exception object already have one.
-
-Sat Mar 20 21:21:03 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb: rm -rf $extout, not extout.
-
-Sat Mar 20 15:25:36 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/template/html/html.rb (RDoc::Page): Force
-	  page background to white.
-
-Sat Mar 20 09:33:36 2004  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: _parse() now accepts fractional
-	  part of second minute that follows a comma or a full stop.
-
-Fri Mar 19 21:06:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (assoc_list): allow {sym: val} style Hash. [Ruby2]
-	  this change is done by Nobuyoshi Nakada <nobu@ruby-lang.org>.
-
-Fri Mar 19 15:15:15 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_cvar_set): class variables become private to the
-	  particular class/module. [Ruby2]
-
-	* variable.c (rb_cvar_get): ditto.
-
-	* variable.c (rb_cvar_defined): ditto.
-
-Fri Mar 19 11:31:32 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb ($beos, $solaris): add OS flags.
-
-	* lib/mkmf.rb (RUBY): / is not recognized as path separator on
-	   nmake/bmake. [ruby-list:39388]
-
-	* lib/mkmf.rb (CLEANLIBS, CLEANOBJS): should remove *.exp with *.so.
-
-Fri Mar 19 01:55:57 2004  Mauricio Fernandez  <batsman.geo@yahoo.com>
-
-	* io.c (rb_io_sync): need not to check writable. [ruby-core:02674]
-
-Thu Mar 18 19:47:44 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* instruby.rb, rubytest.rb: do not depend on srcdir.
-
-Thu Mar 18 18:50:06 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: no longer embed srcdir and compile_dir into
-	  rbconfig.rb.
-
-	* ext/extmk.rb, lib/mkmf.rb: obtain top_srcdir and topdir from library
-	  paths.
-
-Thu Mar 18 17:46:35 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: do not undef :to_a.
-
-Thu Mar 18 16:22:38 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_eq): avoid false positive by using scope and
-	  dyna_vars.  no longer use frame.uniq.
-
-	* eval.c (proc_arity): arity is now defined as number of
-	  parameters that would not be ignored. i.e. Proc.new{}.arity
-	  returns zero.  update test suites too.
-
-Thu Mar 18 15:27:25 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c: remove specialized version of rb_Array().  use simple
-	  one defined in object.c.
-
-	* object.c (Init_Object): remove Kernel#to_a.
-
-	* enum.c (enum_zip): use "to_a" instead of "to_ary".
-
-Wed Mar 17 00:22:03 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* oniguruma.h: imported Oniguruma 2.2.5.
-	* regparse.c: ditto.
-
-Tue Mar 16 11:14:17 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (fnmatch_helper): File.fnmatch('\.', '.') should return true.
-	  (Rev1.112 lost compatiblity)
-
-	* dir.c (fnmatch_helper): File.fnmatch('\/', '/', File::FNM_PATHNAME)
-	  should return true. (Rev1.112 lost compatiblity)
-
-	* dir.c (fnmatch): File.fnmatch('**/.boo', '.foo/.boo',
-	  File::FNM_PATHNAME) should return false because of leading period.
-
-Mon Mar 15 17:01:07 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_initialize): calling 'to_str' each time just for
-	  type checking is too heavy.  [ruby-core:02661]
-
-Mon Mar 15 10:14:51 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SocketForwarder):
-	  add do_not_reverse_lookup.
-
-Mon Mar 15 07:39:13 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): should not re-submit TAG_BREAK if this
-	  yield is not break destination. [ruby-dev:23197]
-
-Sun Mar 14 22:07:38 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_raise): err at unstarted thread.  (PR#1302)
-
-Sat Mar 13 14:56:32 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/ut_drb.rb: use 'druby://localhost:0'. [ruby-dev:23078]
-
-	* test/drb/ut_eval.rb: ditto.
-
-	* test/drb/ut_large.rb: ditto.
-
-	* test/drb/ut_safe1.rb: ditto.
-
-	* test/drb/ut_drb_drbssl.rb: use 'drbssl://localhost:0'.
-
-Fri Mar 12 23:52:56 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (fnmatch): directory recursion '**/' can be used with
-	  File::FNM_PATHNAME. [ruby-dev:22901]
-
-	* dir.c (fnmatch, fnmatch_helper): only '/' is accepted as path
-	  separator even in DOSISH environment. [ruby-dev:22974]
-	  [ruby-list:39337]
-
-	* dir.c (fnmatch_helper): faster '*' matching.
-
-Fri Mar 12 20:19:16 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_noreturn): default for platforms not support
-	  prototypes.
-
-	* ruby.c (ruby_init_loadpath): buffer for path name should have
-	  MAXPATHLEN.
-
-	* lib/mkmf.rb (configuration): include topdir and hdrdir in VPATH.
-
-	* lib/mkmf.rb (create_makefile): default dependency rule.
-
-Fri Mar 12 07:35:36 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/config.rb (WEBrick::Config::General): add
-	  :DoNotReverseLookup.
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#accept): call
-	  do_not_reverse_lookup for each socket if :DoNotReverseLookup
-	  is set.  [ruby-code:02357]
-
-Wed Mar 10 22:26:25 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (remove_dir): should handle symlink correctly.
-	  This patch is contributed by Christian Loew.  [ruby-talk:94635]
-
-Wed Mar 10 16:28:42 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (return_jump): set return value to the return
-	  destination.  separated from localjump_destination().
-
-	* eval.c (break_jump): break innermost loop (or thread or proc).
-
-	* eval.c (rb_yield_0): set exit_value for block break.
-
-Wed Mar 10 16:00:14 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_def): Struct::new executes block with
-	  generated struct class. [ruby-talk:02606]
-
-Wed Mar 10 15:58:43 2004  Ryan Davis  <ryand@zenspider.com>
-
-	* eval.c (eval): Only print backtrace if generating the backtrace
-	  doesn't generate an exception.  [ruby-core:02621]
-
-Wed Mar 10 10:15:16 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (opt_W_getter): get rid of warning.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub:
-	  fixed dependency.
-
-Tue Mar  9 13:04:26 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_ungetc): raise IOError instead of calling
-	  rb_sys_fail().  [ruby-talk:23181]
-
-Tue Mar  9 10:03:40 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub:
-	  replaced regex.c entry with Oniguruma files.
-
-Tue Mar  9 01:09:46 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* Makefile.in: replaced regex.c entry with Oniguruma files.
-
-Mon Mar  8 23:16:07 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: HTTPHeader did not initialized correctly.
-
-	* lib/net/http.rb (connect): does same debug output.
-
-Mon Mar  8 21:38:18 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (add_header): remove warning. [ruby-dev:23170]
-
-Mon Mar  8 21:09:39 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (range): Cancel change for incomplete '['. More discussion
-	  is needed.
-
-Mon Mar  8 19:35:13 2004  akira yamada  <akira@arika.org>
-
-	* lib/uri/common.rb (URI::REGEXP::PATTERN::HOSTPORT): (?:#{PORT})
-	  -> (?::#{PORT}).  [ruby-dev:23170]
-
-Mon Mar  8 15:03:24 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (range): treat incomplete '[' as ordinary character (like
-	  has_magic does). fix buffer overrun at incomplete escape like '[\'.
-
-Mon Mar  8 13:35:32 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* regparse.c (parse_exp): need to separate initialization for bcc32.
-	  [ruby-dev:23169]
-
-	* oniguruma.h (ONIG_EXTERN): check __GNUC__ instead of __CYGWIN__.
-
-Mon Mar  8 01:05:55 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/config.rb (WEBrick::Config::HTTP): rename :RequestHander
-	  to :RequestCallback and add new option :ServerAlias.
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): use
-	  :RequestCallback and warn if :RequestHandler is in server's option.
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): should print
-	  error message for WEBrick::HTTPSataus::Error.
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#lookup_server):
-	  lookup for hostname from :ServerAlias if the req.host is not match
-	  to :ServerName.
-
-	* lib/webrick/httpservlet.rb (WEBrick::HTTPServlet::CGIHandler#do_GET):
-	  use $?.exitstatus and refine log message.
-
-Sun Mar  7 16:22:26 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* Makefile.in (lex.c): use $? instead of $<.
-
-	* lib/pstore.rb (commit_new): use FileUtils.copy_stream for Cygwin.
-	  [ruby-dev:23157]
-
-Sun Mar  7 05:34:42 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: HTTPHeader keeps its header fields as an array.
-
-	* lib/net/http.rb: new method HTTPHeader#add_header, get_fields.
-
-	* lib/net/http.rb: new method HTTPHeader#content_length=.
-
-	* lib/net/http.rb: new method HTTPHeader#content_type, main_type,
-	  sub_type, type_params, content_type=, set_content_type.
-
-	* lib/net/http.rb (HTTPHeader#basic_encode): result of pack(m) may
-	  contain multiple LFs.
-
-Sun Mar  7 03:11:00 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: new method Net::HTTPRequest#body(=).
-
-	* lib/net/http.rb: new method Net::HTTPRequest#body_stream(=).
-
-Sun Mar  7 02:06:07 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: spin off https code again.
-
-	* lib/net/https.rb: new file.
-
-	* ext/openssl/lib/net/https.rb: removed.  moved to net/https with
-	  slight modifications.
-
-	* ext/openssl/lib/net/protocols.rb: removed.  merged with net/http.
-
-	* lib/net/protocol.rb: new class BufferedIO.
-
-	* lib/net/protocol.rb: InternetMessageIO < BufferedIO.
-
-	* lib/net/protocol.rb: BufferedIO.new takes an IO.
-
-	* lib/net/smtp.rb: follow InternetMessageIO's change.
-
-	* lib/net/pop.rb: ditto.
-
-Sun Mar  7 00:55:03 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: remove method: InternetMessageIO#address,
-	  port, ip_address, read_timeout(=), socket.
-
-	* lib/net/protocol.rb: simplify code.
-
-	* lib/net/protocol.rb: apply latest coding style.
-
-Sat Mar  6 15:15:05 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/strscan/depend: depends on re.h and regex.h.
-
-	* ext/strscan/strscan.c: no version check needed.
-
-	* ext/strscan/strscan.c (strscan_init_copy): struct re_registers must
-	  not be bitwise copied.
-
-Sat Mar  6 11:14:33 2004  David Black  <dblack@wobblini.net>
-
-	* lib/scanf.rb: refixed the previous fix in IO#block_scanf
-
-Sat Mar  6 10:49:40 2004  David Black  <dblack@wobblini.net>
-
-	* lib/scanf.rb: fixed a logic glitch in IO#block_scanf
-
-Sat Mar  6 02:00:19 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: net/https is merged.
-
-	* ext/openssl/lib/net/https.rb: ditto.
-
-Sat Mar  6 00:39:21 2004  Kazuo Saito  <ksaito@uranus.dti.ne.jp>
-
-	* oniggnu.h: imported from Oniguruma library.
-	* oniguruma.h: ditto.
-	* regcomp.c: ditto.
-	* regenc.c: ditto.
-	* regenc.h: ditto.
-	* regerror.c: ditto.
-	* regex.c: ditto.
-	* regexec.c: ditto.
-	* reggnu.c: ditto.
-	* regint.h: ditto.
-	* regparse.c: ditto.
-	* regparse.h: ditto.
-	* ascii.c: ditto.
-	* euc_jp.c: ditto.
-	* sjis.c: ditto.
-	* utf8.c: ditto.
-
-	* MANIFEST: added Oniguruma files listed above.
-
-	* LEGAL: added Oniguruma license.
-
-	* regex.h: now includes oniggnu.h.
-
-	* re.c: applied Oniguruma patch.
-
-Fri Mar  5 23:13:08 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: support WebDAV methods, PROPPATCH, LOCK,
-	  UNLOCK, OPTIONS, PROPFIND, DELETE, MOVE, COPY, MKCOL.
-	  This patch is contributed by Tatsuki Sugiura.
-
-Fri Mar  5 20:58:37 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: Net::HTTPResponse#response is obsolete.
-	  [ruby-core:02592]
-
-	* lib/net/http.rb: Net::HTTPResponse#header is obsolete.
-
-	* lib/net/http.rb: Net::HTTPResponse#read_header is obsolete.
-
-Fri Mar  5 20:10:57 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: new method StringScanner#initialize_copy
-	  to allow #dup and #clone.
-
-	* test/strscan/test_strscan.rb: test StringScanner#dup.
-
-Fri Mar  5 19:42:09 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTPResponse#to_ary): should return an object
-	  which does not respond to #to_ary.  It causes infinite loop in
-	  puts. [ruby-core:02578]
-
-Fri Mar  5 00:51:35 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/test/unit.rb: Move RDoc documentation so that you can
-	  now say 'ri Test::Unit'
-
-Thu Mar  4 22:31:40 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in: miniruby is not needed for cross compile.
-
-	* configure.in (PREP): miniruby for native compile.
-
-Thu Mar  4 11:46:32 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/drb/extservm.rb (DRb::ExtServManager#invoke_service_command):
-	  detach server processes to get rid of zombies.
-
-Thu Mar  4 10:41:25 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (T_MASK): save 1 bit in flags bits by shifting T_xxx
-	  values.
-
-Thu Mar  4 08:08:36 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/rubyext.c: get rid of warnings.
-
-	* lib/rss/taxonomy.rb: ditto.
-
-	* lib/rdoc/ri/ri_formatter.rb: ditto.
-
-	* test/ruby/test_assignment.rb: ditto.
-
-Thu Mar  4 01:17:28 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/ri_display.rb (DefaultDisplay::page): wait until the
-	  pager terminates.
-
-Wed Mar  3 13:10:56 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (method_hash): new method. [ruby-talk:93968]
-
-	* eval.c (proc_eq): do not compare dyna_vars.
-
-	* eval.c (proc_hash): new method.
-
-	* eval.c (rb_yield_0): protect break/return from within orphan (or
-	  lambda) Proc object.
-
-Wed Mar  3 09:52:05 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb ($topdir): use compile_dir only when not installed yet.
-	  [ruby-talk:94098]
-
-Wed Mar  3 01:18:52 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/converter.rb: handled Uconv::Error.
-
-	* lib/rss/dublincore.rb: DublincoreModel -> DublinCoreModel
-
-Wed Mar  3 00:59:30 2004  David Black  <dblack@wobblini.net>
-
-	* lib/scanf.rb: soak_up_spaces only ungetc's non-space last
-	  character
-
-	* lib/scanf.rb: IO#block_scanf now returns partial last iteration
-	  array if format string matches partly
-
-Tue Mar  2 16:30:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): erred program name should be reported by
-	  exceptions, instead of the first argument.
-
-	* process.c (rb_spawn): ditto.
-
-	* process.c (proc_spawn_v): use first argument as program name.
-
-	* win32/win32.c (rb_w32_aspawn): ditto.
-
-	* win32/win32.c (CreateChild): search executable file if no program
-	  name given.
-
-	* lib/drb/extservm.rb (invoke_service_command): use Process.spawn.
-	  [ruby-dev:23103]
-
-	* lib/rdoc/ri/ri_display.rb (setup_pager): use IO.popen.
-	  [ruby-dev:23086], [ruby-dev:23103]
-
-	* lib/rdoc/diagram.rb (convert_to_png): ditto.
-
-	* lib/rdoc/generators/chm_generator.rb (compile_project): ditto.
-
-Tue Mar  2 12:24:03 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub, wince/Makefile.sub (config.h): shouldn't check
-	  defined? NORETURN. [ruby-dev:23100]
-
-Tue Mar  2 11:28:40 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (test_ljump): cannot use
-	  assert_nothing_raised due to passing block.
-
-Tue Mar  2 06:23:14 2004  David Black  <dblack@wobblini.net>
-
-	* lib/scanf.rb: fixed Kernel#scanf to propagate code block
-
-Mon Mar  1 23:25:40 2004  David Black  <dblack@wobblini.net>
-
-	* lib/scanf.rb: Partial fix so STDIN#scanf works with new
-	 STDIN#pos behavior
-
-Mon Mar  1 19:42:05 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/setup.mak: configure's default is "--enable-install-doc"
-
-	* win32/setup.mak: ditto.
-
-Mon Mar  1 12:24:10 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_alias):
-	  Allow aliases to have parentheses
-
-Sun Feb 29 23:14:53 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_class):
-	  Handle :nodoc: on singleton classes.
-
-Sat Feb 28 21:50:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bcc32/Makefile.sub, bcc32/README.bcc32, bcc32/configure.bat,
-	  bcc32/setup.mak: new configure scheme. use ``configure --prefix=dir''
-	  instead of ``make DESTDIR=dir install''.
-	  --with-static-linked-ext support on bccwin32. [ruby-dev:23034]
-
-Sat Feb 28 21:50:20 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/setup.mak: "configure --disable-install-doc" is now working.
-
-	* win32/setup.mak: ditto.
-
-Sat Feb 28 15:09:49 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/configure.bat: append missing label ":exit".
-
-	* bcc32/configure.bat: fix typo.
-
-Sat Feb 28 10:31:03 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* MANIFEST: add test_erb.rb
-
-	* lib/erb.rb, test/erb/test_erb.rb: don't forget filename,
-	  if both filename and safe_level given. [ruby-dev:23050]
-
-Sat Feb 28 01:08:40 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): should not allow symbol for invalid global
-	  variable (e.g. `:$-)`). [ruby-core:02518]
-
-Fri Feb 27 20:37:09 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): no orphan block check is needed when pcall
-	  is true.
-
-	* eval.c (localjump_destination): update localjump condition.
-
-Fri Feb 27 02:10:49 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (localjump_destination): lambda should not interfere
-	  return from the yielded block.
-
-Fri Feb 27 00:53:49 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb, test/drb/drbtest.rb: require drb/eq.rb by default
-
-Thu Feb 26 12:15:02 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (make_cmdvector): adjust successive double-quote
-	  handling.
-
-Thu Feb 26 09:42:56 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (delete_if_i): use st_delete_safe() (via
-	  rb_hash_delete()) instead of returning ST_DELETE.
-
-Thu Feb 26 02:35:10 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_f_exec): get rid of SEGV when exec failed for command
-	  in single string.
-
-Wed Feb 25 21:17:33 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (obj_free), io.c (rb_io_fptr_finalize), rubyio.h (OpenFile):
-	  sharing OpenFile.
-
-	* io.c (rb_io_initialize): accept IO instance.  [ruby-dev:22195]
-
-Wed Feb 25 21:16:10 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (with_destdir): should return the given argument if no
-	  DESTDIR is given.
-
-	* instruby.rb: use path name expansion of cmd.exe.
-
-Wed Feb 25 20:44:45 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi-lib.rb, lib/getopts.rb, lib/importenv.rb, lib/parsearg.rb:
-	  warn with caller position.
-
-	* test/rss/test_content.rb, test/rss/test_dublincore.rb,
-	  test/rss/test_syndication.rb, test/rss/test_trackback.rb: use cgi
-	  instead of cgi-lib.
-
-Tue Feb 24 18:42:03 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (glob_helper): '**/' should not match leading period
-	  unless File::FNM_DOTMATCH is set. (like '*/') [ruby-dev:23014]
-
-Tue Feb 24 18:03:14 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_file.rb (test_fnmatch): test for dir.c:1.108.
-
-Tue Feb 24 17:07:17 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (fnmatch): File.fnmatch with File::FNM_PATHNAME was broken
-	  for the pattern including '*' followed by '/'.
-
-Tue Feb 24 13:22:21 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc::normalized_file_list): Attempt to get better
-	  heuristics on which files to include and exclude. Now only include
-	  non-standard files if they are explicitly named in ARGV.
-
-Tue Feb 24 07:23:30 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb: Deal with :stopdoc: when
-	  choosing a default main page to display (ie. don't select a page
-	  if we don't have documentation for it).
-
-Tue Feb 24 06:40:14 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RubyLex::identify_identifier): Handle
-	  class variables in code listings
-
-Tue Feb 24 06:32:27 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::do_aliases): Handle
-	  aliases in C files.
-
-Tue Feb 24 06:16:22 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc::document): Now create op dir _before_
-	  parsing files.
-
-Tue Feb 24 06:08:47 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_constant):
-	  Start collecting text of constant values earlier: was missing
-	  values in output if there was no space after '='
-
-Tue Feb 24 06:08:25 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb: Escape contant values.
-
-Tue Feb 24 03:45:06 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_config.c (ossl_config_each): add new method
-	  OpenSSL::Config#each. it iterates with section name, field name
-	  and value.
-
-	* ext/openssl/ossl_config.c (Init_ossl_config): include Enumerable.
-
-Mon Feb 23 09:09:44 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (parse_args): use optparse instead of getopts.
-
-	* instruby.rb (DOSISH): embedded path in batch files should not be
-	  prefixed by DESTDIR.  [ruby-core:02186]
-
-Sun Feb 22 14:58:04 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: $extstatic is Array or nil now.  [ruby-talk:93383]
-
-	* Makefile.in, bcc32/Makefile.sub, win32/Makefile.sub: terminate options.
-
-	* lib/mkmf.rb (init_mkmf): $INCFLAGS also should be lazy-evaluated.
-
-Sun Feb 22 13:05:37 2004  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/mailto.rb (URI::MailTo::to_s): should include fragment.
-
-Sun Feb 22 12:58:35 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: use optparse instead of getopts.
-
-	* Makefile.in, bcc32/Makefile.sub, win32/Makefile.sub: ditto.
-
-Sun Feb 22 09:51:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* re.c: corrected documentation format (rb_reg_initialize_m)
-
-Sat Feb 21 22:41:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* ext/zlib/zlib.c: documented, but needs more effort.
-
-Sat Feb 21 14:33:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: prefer relative path.  [ruby-talk:93037]
-
-Sat Feb 21 11:12:08 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/os2.c, missing/x68.c: typo fix.  pointed out by greentea.
-
-Fri Feb 20 19:11:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ostruct.rb (OpenStruct#initialize_copy): should not share
-	  members.  [ruby-dev:22966]
-
-Fri Feb 20 18:59:47 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/init.rb (IRB::IRB.parse_opts): add -I option to
-	  irb. [ruby-dev:39243]
-
-Fri Feb 20 12:55:27 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): fix typo.
-
-	* win32/win32.c (CreateChild): first argument to CreateProcess() must
-	  have path, not just basename.
-
-Thu Feb 19 23:24:16 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb (Generators::HtmlClass::build_attribute_list):
-	  Support visibility modifiers for attributes
-
-Thu Feb 19 22:39:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/ostruct.rb: documented
-
-Thu Feb 19 22:39:04 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/rinda/test_rinda.rb: DRb.start_service only once in testsuites.
-	  DRb.start_service could handle this.
-
-Thu Feb 19 22:24:04 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/mapping/rubytypeFactory.rb: should not dump singleton class.
-	  [ruby-dev:22588]
-	  c = class << Object.new; class C; self; end; end; SOAPMarshal.dump(c)
-
-Thu Feb 19 18:08:18 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* ext/strscan/strscan.c: improved documentation
-
-Thu Feb 19 18:08:18 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c, win32/win32.h: fixed prototypes.
-
-	* win32/win32.c (wait): same as waitpid() with -1.
-
-Thu Feb 19 02:34:28 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/markup/simple_markup/preprocess.rb (SM::PreProcess::include_file):
-	  Only strip comment markers if all lines start with comments.
-
-Thu Feb 19 03:05:49 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: StringScanner#restsize is obsolete;
-	  use #rest_size instead.
-
-	* ext/strscan/strscan.c: StringScanner#matchedsize is obsolete;
-	  use #matched_size instead.
-
-Thu Feb 19 02:42:19 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: don't use rb_eval_string, it defines
-	  classes under the module when required in module clauses.
-	  [ruby-dev:22951]
-
-Thu Feb 19 02:37:28 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: merge documentation from 1.8 branch.
-	  Thanks Gavin Sinclair.
-
-Thu Feb 19 00:20:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/cgi-lib.rb:   deprecated after 1.8.1
-
-	* lib/getopts.rb:   ditto
-
-	* lib/importenv.rb: ditto
-
-	* lib/parsearg.rb:  ditto
-
-Thu Feb 19 00:11:05 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/markup/simple_markup/preprocess.rb (SM::PreProcess::handle):
-	  Strip extraneous space from filenames in :include:
-
-Wed Feb 18 22:53:41 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/unix.rb: remove O_NONBLOCk, thanks \ay
-
-Wed Feb 18 22:42:19 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb: improt test_rinda.rb
-
-Wed Feb 18 22:03:11 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/*: should not depend on $KCODE.
-
-Wed Feb 18 18:07:09 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_sprintf.rb: added tests.
-
-Wed Feb 18 17:18:01 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c: need to include <olectl.h> on Cygwin.
-
-Wed Feb 18 10:40:38 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): sign bit extension should not be done
-	  if FPLUS flag is specified.  [ruby-list:39224]
-
-	* sprintf.c (rb_f_sprintf): do not prepend dots for negative
-	  numbers if FZERO is specified.  [ruby-dev:39218]
-
-Wed Feb 18 10:23:34 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): clean up.
-
-Tue Feb 17 23:40:34 2004  Guy Decoux  <ts@moulon.inra.fr>
-
-	* sprintf.c (rb_f_sprintf): preserve original val for
-	  format_integer. [ruby-talk:92975]
-
-Tue Feb 17 23:28:45 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/marshal/test_marshal.rb, test/ruby/test_marshal.rb: do $:
-	  trick to share the testcase test/ruby/marshaltestlib.rb.
-
-Tue Feb 17 23:13:23 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/marshaltestlib.rb: common marshal testcase added.
-
-	* test/ruby/test_marshal.rb: use above testsuite.
-
-	* test/soap/marshal/test_marshal.rb: ditto.
-
-	* test/soap/marshal/cmarshal.rb: removed (not used).
-
-Tue Feb 17 19:34:26 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): $extout_prefix doesn't vary for libraries.
-
-	* ext/extmk.rb (extmake): remove compile directory if empty.
-
-	* ext/extmk.rb (parse_args) lib/mkmf.rb (create_makefile): move
-	  initialization of $extout_prefix from lib/mkmf.rb.  [ruby-dev:22928]
-
-	* ext/extmk.rb: clear ext and extout directory when cleaning.
-
-	* lib/mkmf.rb (CLEANLIBS): should be under $(arch) directory.
-
-Tue Feb 17 18:02:10 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: ScanError may be (wrongly) garbage
-	  collected. (thanks Gavin Sinclair)
-
-	* ext/strscan/strscan.c: move ::ScanError to StringScanner::Error.
-	  ::ScanError is also defined for backward compatibility.
-
-	* ext/strscan/strscan.c: #peep is obsolete, use #peek.
-
-	* ext/strscan/strscan.c: #empty? is obsolete, use #eos?.
-
-	* ext/strscan/strscan.c: #clear is obsolete, use #terminate.
-
-	* ext/strscan/strscan.c: #getbyte is obsolete, use #get_byte.
-
-Tue Feb 17 12:12:47 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (parse_args): delay expanding $(extout) until invoking
-	  make.
-
-	* lib/mkmf.rb (CLEANLIBS): should remove files have specific
-	  extensions.
-
-Tue Feb 17 11:33:30 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rss/rexmlparser.rb: REXML version may be 4 digits.
-
-Tue Feb 17 10:45:59 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_emitter_end_object): takes only one arg.
-
-Tue Feb 17 07:48:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rexml/encodings/SHIFT_JIS: wrong library name.
-
-Tue Feb 17 01:35:28 2004  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (rb_eval): care that another thread replace NODE_DREGX_ONCE
-	  to NODE_LIT.  [ruby-dev:22920]
-
-Tue Feb 17 01:20:57 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: new module FileUtils::DryRun.
-
-Mon Feb 16 23:28:14 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb: document reduction.  [ruby-core:02429]
-
-	* test/yaml/test_yaml.rb: added 0..1 test with "0".."1" on display.
-	  it should be defined that the specification about what kind of Range
-	  is supported in ruby's custom type in YAML.
-
-Mon Feb 16 22:22:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/generator.rb: corrected doc format
-
-	* lib/rinda/rinda.rb: added documentation (from Hugh Sasse)
-
-	* lib/rinda/tuplespace.rb: ditto
-
-	  [Note: rinda files actually committed Wed Feb 18 07:27:00 2004]
-
-Mon Feb 16 20:28:52 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/Makefile.sub: show more warnings. (refering to mingw)
-
-	* bcc32/setup.mak: ditto.
-
-Mon Feb 16 18:35:58 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): should create *.pdb on ext/,
-	  not .ext/.
-
-	* win32/Makefile.sub (config.status): convert the name of import
-	  library.
-
-	* lib/mkmf.rb (create_makefile): now don't need to remove
-	  $(TARGET).lib.
-
-Mon Feb 16 15:45:22 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check functions, fork spawnv.
-
-	* io.c (rb_io_s_popen): accept argv not only single command line.
-
-	* process.c (rb_proc_exec_n): export.
-
-	* process.c (rb_check_argv): check if arguments are safe to invoke.
-
-	* process.c (rb_fork): retry to fork.
-
-	* process.c (rb_spawn): spawn child process asynchronously.
-
-	* process.c (rb_f_system): raise an exception if the command could not
-	  execute.
-
-	* win32/win32.c (rb_w32_argv_size): count necessary size for joined
-	  arguments.
-
-	* win32/win32.c (rb_w32_join_argv): join arguments with quoting.
-
-	* win32/win32.c (rb_w32_pipe_exec, rb_w32_spawn, rb_w32_aspawn):
-	  accept program name adding to command line.
-
-Mon Feb 16 15:18:33 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/racc/parser.rb: add note for Racc full package.
-
-Mon Feb 16 15:13:01 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/racc/cparse/README: new file.
-
-	* ext/racc/cparse/MANIFEST: add README.
-
-Mon Feb 16 12:29:10 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_s_list): new method Iconv.list
-	  (libiconv only).
-
-Mon Feb 16 10:29:52 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (CompareImpl): File.fnmatch and Dir.glob get better performance
-	  in Win32. This is achived by calling downcase() for single-byte
-	  characters. (CharLower() is slower than downcase())
-
-Mon Feb 16 02:14:29 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* bcc32/Makefile.sub: should warn suspicious pointer conversion.
-
-	* bcc32/setup.mak: ditto.
-
-Sun Feb 15 20:56:22 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (push_braces): remove wrong const. [ruby-dev:22891]
-
-Sun Feb 15 20:41:15 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* sample/soap/calc/httpd.rb, sample/soap/exchange/httpd.rb,
-	  sample/soap/sampleStruct/httpd.rb, sample/wsdl/googleSearch/httpd.rb:
-	  use soap/property instead of getopts for configuring DocumentRoot
-	  and port# of httpd.  see samplehttpd.conf below.
-
-	* sample/soap/calc/samplehttpd.conf,
-	  sample/soap/exchange/samplehttpd.conf,
-	  sample/soap/sampleStruct/samplehttpd.conf,
-	  sample/wsdl/googleSearch/samplehttpd.conf: added.
-
-Sun Feb 15 19:13:33 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/tuplespace.rb: read(tpl,0), raise RequestExpiredError
-	  if not found.
-
-Sun Feb 15 15:48:57 2004  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add IDispatch wrapper in val2variant.
-	  Thanks, arton.
-
-Sun Feb 15 15:23:29 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* ruby.h, dir.c (rb_glob): add const.
-
-Sun Feb 15 01:46:05 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/mkmf.rb: absolute path of ruby is assigned to $(RUBY).
-	  [ruby-dev:22870]
-
-Sat Feb 14 23:59:11 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: use fileutils.rb instead of ftools.rb.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub (config.h): define
-	  STACK_GROW_DIRECTION.
-
-	* bcc32/Makefile.sub (config.h): add newer checks.
-
-	* wince/Makefile.sub (config.h): define NEED_IO_SEEK_BETWEEN_RW.
-
-Sat Feb 14 23:26:27 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/un.rb: use OptionParser instead of getopts.
-
-Sat Feb 14 11:28:14 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* sample/drb/*: import lib/drb/sample
-
-Sat Feb 14 11:14:12 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: add pretty_print, thanks gotoken.
-
-Fri Feb 13 21:51:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/fileutils.rb: slighly improved documentation (sync with 1.8)
-
-Fri Feb 13 19:57:01 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_trackback.rb: added tests for TrackBack with RSS
-	  2.0.
-
-	* test/rss/common.rb: added methods make RSS 2.0.
-
-	* lib/rss/trackback.rb: TrackBack API is decided.
-
-	* lib/rss/rss.rb: RSS::VERSION 0.0.7 -> 0.0.8.
-
-	* lib/rss/parser.rb, lib/rss/rss.rb: replaced $DEBUG by RSS::DEBUG.
-
-	* lib/rss/2.0.rb: removed RSS 2.0 URI. Because RSS 2.0 doesn't
-	  have URI.
-
-Fri Feb 13 14:41:00 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: en-bugged at last commit (Feb 11 23:24:22 2004)
-
-Fri Feb 13 12:26:37 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb: rescue SystemCallError instead
-	  of EINVAL.  File.link may raise EACCES on network file systems.
-
-Fri Feb 13 05:18:58 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb: File.link raises EINVAL on
-	  Win9x. [ruby-dev:22713]
-
-Thu Feb 12 21:49:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/ftools.rb: documented
-
-Thu Feb 12 21:19:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/base64.rb: added and tidied documentation
-
-Thu Feb 12 20:45:01 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb (WriteAdapater#puts): must append "\n" to
-	  the string, don't prepend. (ruby-bugs:PR#1280)
-
-Thu Feb 12 20:31:43 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): cpp32 of Borland C++ ignores #error
-	  directives in DOS line-ending files at all.
-
-Thu Feb 12 15:23:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rparen): ignore preceding newlines to right parentheses.
-	  (ruby-bugs:PR#1221) [ruby-dev:22858]
-
-Thu Feb 12 14:17:43 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: set ac_cv_func_link to yes to enable link() on MinGW.
-	  [ruby-dev:22241]
-
-Thu Feb 12 13:32:49 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (link): raise NotImplementedError on Win9X.
-	  contributed by Tietew. [ruby-dev:22713]
-
-	* win32/win32.c, win32/win32.h (link): add const.
-
-Thu Feb 12 09:56:19 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/lib/tk.rb (TkComm::tk_split_list): suppress a warning.
-
-Thu Feb 12 02:23:56 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb: use assert_raise instead of assert_raises.
-
-	* lib/pp.rb: ditto.
-
-	* lib/time.rb: ditto.
-
-	* lib/tsort.rb: ditto.
-	  use TSortHash and TSortArray instead of Hash and Array in test.
-
-Wed Feb 11 23:24:22 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: properly treat a Tcl/Tk's string with escaping
-	  special characters.
-
-Tue Feb 10 20:49:07 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (method_proc): return bound Proc object.  [ruby-dev:22854]
-
-	* eval.c (rb_mod_define_method): bind method body itself for Method
-	  object.
-
-	* node.h (NODE_DMETHOD): deprecated.
-
-	* object.c (rb_class_inherited_p): export.
-
-Tue Feb 10 16:43:50 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (umethod_bind): purge unused check.  [ruby-dev:22850]
-
-Tue Feb 10 14:33:08 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_match): raise TypeError when both arguments are
-	  strings. [ruby-dev:22851]
-
-	* string.c (rb_str_match2): removed.
-
-	* Makefile.in, bcc32/Makefile.sub, win32/Makefile.sub,
-	  wince/Makefile.sub (string.c): now not depend on version.h.
-
-Mon Feb  9 17:46:07 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, bcc32/Makefile.sub, win32/Makefile.sub, configure.in,
-	  runruby.rb: run rdoc, test and so on with compiled extension
-	  libraries.  [ruby-dev:22688]
-
-	* ext/extmk.rb, lib/mkmf.rb: make extension libraries in separated
-	  directory, similar to the actual directory structure.
-
-	* lib/fileutils.rb (FileUtils.copy_file): use the mode of the original
-	  file to create new file.
-
-	* lib/rdoc/ri/ri_paths.rb (RI::Paths::SYSDIR): get rid of unexpected
-	  influence by envirionment variable.
-
-	* bcc32/configure.bat, win32/configure.bat: add install-doc options.
-
-	* win32/win32.c, win32/win32.h (rb_w32_fstat): fix Borland C runtime
-	  bug which returns wrong mode.  [ruby-dev:22846]
-
-Mon Feb  9 16:30:12 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (detach_process_watcher): return the last status.
-	  [ruby-dev:22841]
-
-Sun Feb  8 16:46:08 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pp.rb (PP::PPMethods::object_address_group): suppress negative
-	  sign for higher heap areas.
-
-Sun Feb  8 16:18:27 2004  akira yamada  <akira@ruby-lang.org>
-
-	* test/yaml/test_yaml.rb (YAML_Unit_Tests::test_range_cycle):
-	  added tests.
-
-Sun Feb  8 15:51:57 2004  akira yamada  <akira@ruby-lang.org>
-
-	* test/ruby/test_file.rb (TestFile::test_fnmatch): added tests for
-	  File.fnmatch. [ruby-dev:22815][ruby-dev:22819]
-
-Sun Feb  8 15:41:45 2004  akira yamada  <akira@ruby-lang.org>
-
-	* test/yaml/test_yaml.rb (YAML_Unit_Tests::test_range_cycle):
-	  added tests. [ruby-core:02306] [ruby-core:02311]
-
-Sun Feb  8 14:24:35 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTP#request): should not overwrite Connection
-	  header. (ruby-bugs:PR#1274)
-
-Sun Feb  8 10:11:21 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (glob_helper): Dir.glob('**/') did not work. [ruby-dev:22832]
-
-Sun Feb  8 00:29:26 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (fnmatch): File.fnmatch('*?', 'a') should return true.
-	  [ruby-dev:22815]
-
-	* dir.c (fnmatch): File.fnmatch('\[1\]' , '[1]') should return true.
-	  [ruby-dev:22819]
-
-	* dir.c: Did some styles (no change to behavior)
-
-Sat Feb  7 19:56:11 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb/init.rb (IRB.rc_files): yield possible rc file names.
-
-	* lib/irb/input-method.rb (IRB::ReadlineInputMethod::initialize):
-	  load and save history automatically.  [ruby-core:02352]
-
-Fri Feb  6 22:48:16 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb (gen_url): Support
-	  https in RDoc hyperlinks
-
-Fri Feb  6 22:41:22 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/pp.rb (PPInspectTest#test_to_s_with_iv): rollback the previous
-	  commit.  [ruby-dev:22813]
-
-Fri Feb  6 22:22:50 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/pp.rb (PPInspectTest#test_to_s_with_iv): remove instance
-	  variable which is defined in the test.
-
-Fri Feb  6 18:54:18 2004  akira yamada  <akira@ruby-lang.org>
-
-	* test/ruby/test_proc.rb (TestProc::test_eq): added a
-	  test.  [ruby-dev:22599]
-
-Fri Feb  6 18:26:00 2004  akira yamada  <akira@ruby-lang.org>
-
-	* test/ruby/test_proc.rb (TestProc::test_eq): added tests for
-	  Proc#==.  [ruby-dev:22592], [ruby-dev:22601]
-
-Fri Feb  6 10:12:06 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (bsock_do_not_reverse_lookup): control reverse
-	  lookup for every instance.  [ruby-core:02346]
-
-Fri Feb  6 09:15:11 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb/extend-command.rb: add irb_help command.  [ruby-talk:91610]
-
-	* lib/irb/cmd/help.rb (IRB::ExtendCommand::Help): show RDoc.
-
-Fri Feb  6 00:48:37 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/prettyprint.rb (PrettyPrint#first?): obsoleted.
-
-Thu Feb  5 23:56:55 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/prettyprint.rb (PrettyPrint#seplist): added.
-
-	* lib/pp.rb (PPMethods#pp_object): use seplist.
-	  (PPMethods#pp_hash): ditto.
-	  (Array#pretty_print): ditto.
-	  (Struct#pretty_print): ditto.
-	  (MatchData#pretty_print): ditto.
-
-	* lib/set.rb (Set#pretty_print): use seplist.
-
-Wed Feb  4 22:39:46 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_stat_mode): should not sign-expand, so backout.
-
-Wed Feb  4 02:12:06 2004  Tanaka Akira  <akr@m17n.org>
-
-	* file.c (test_l): fix wrong method name in document.
-	  (test_S): ditto.
-	  (test_b): ditto.
-	  (test_c): ditto.
-	  (test_suid): ditto.
-	  (test_sgid): ditto.
-	  (test_sticky): ditto.
-
-Tue Feb  3 22:36:25 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/2.0.rb, lib/rss/content.rb, lib/rss/dublincore.rb,
-	  lib/rss/rss.rb, lib/rss/syndication.rb: removed warnings.
-
-	* lib/rss/converter.rb: removed handling load error of nkf.
-
-	* test/rss/test_syndication.rb, test/rss/test_trackback.rb,
-	  test/rss/test_dublincore.rb, test/rss/test_content.rb: replaced
-	  'require "rss/parser"' by 'require "rss/1.0"'.
-
-	* test/rss/test_parser.rb, test/rss/test_accessor.rb: removed
-	  'require "rss/parser"'.
-
-Tue Feb  3 11:23:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reduce_nodes): remove tail returns.  [ruby-talk:90934]
-
-Tue Feb  3 08:04:57 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (Struct#pretty_print_cycle): follow 1.8 style.
-
-Mon Feb  2 22:06:31 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (block_append, new_evstr, void_expr0): remove no longer used
-	  labels.
-
-Mon Feb  2 18:45:50 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dln.c (dln_load): don't specify RTLD_GLOBAL on Interix,
-	  because it caused SEGV when running runner.rb.
-
-Mon Feb  2 01:54:00 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (Struct#pretty_print): make it 1.8 style.
-	  (Numeric#pretty_print, FalseClass#pretty_print)
-	  (TrueClass#pretty_print, Module#pretty_print): fix pp for objects
-	  with instance variables.  [ruby-talk:91157]
-
-	* lib/open-uri.rb (URI::Generic#find_proxy): return nil on loopback
-	  address.
-
-	* lib/resolv-replace.rb (BasicSocket#send): don't replace because
-	  it has no hostname argument.
-	  (IPSocket.getaddress): raise SocketError instead of
-	  Resolv::ResolvError for errors.
-	  (TCPSocket#initialize, UDPSocket#bind, UDPSocket#connect)
-	  (SOCKSSocket#initialize): use IPSocket.getaddress instead of
-	  Resolv.getaddress.
-	  (UDPSocket#send): recognize 3 arguments form.  try all addresses on
-	  4 arguments form.
-
-Sun Feb  1 23:00:00 2004  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal.c: Bug in BigDecimal("1e#{n}").add BigDecimal('.5'),n)
-	  reported and fixed by Javier Goizueta.
-
-Sun Feb  1 18:21:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	  From ruby_1_8 branch:
-	* lib/test/unit.rb: rearranged documentation for RDoc's sake.
-	* lib/matrix.rb: improved documentation.
-	* lib/net/http.rb: slight documentation formatting improvement.
-
-Sun Feb  1 05:30:06 2004  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::Generic#find_proxy): warn HTTP_PROXY.
-	 raise an errror on non-http proxy URI.
-	 (OpenURI::Buffer#<<): make a tempfile binmode.  [ruby-talk:90793]
-
-Sun Feb  1 00:57:41 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb (RSS::Parser): added @@default_parser. Used
-	  XML parser became selectable.
-	* test/rss/test_parser.rb: added tests for
-	  RSS::Parser.default_parser.
-
-Sat Jan 31 02:28:15 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (RPATHFLAG): set to -Wl,-R like NetBSD on Interix.
-
-Sat Jan 31 01:09:41 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: leading 0 padding of timestamp usec part.
-
-Fri Jan 30 18:53:23 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (KR_REHASH): wrong hash value on sizeof(long) > sizeof(int).
-
-Thu Jan 29 23:11:57 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (DLEXT2): removed.  Ruby does not treat
-	  ".dll" as a extention library anymore.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub (DLEXT2):
-	  ditto.
-
-	* util.c (mblen): fix overrun.  [ruby-dev:22672]
-
-Thu Jan 29 22:41:53 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb: Allow 'link:' in Tidylinks.
-	  THis means you can write "see f1[link:files/f1_rb.html]".
-
-Thu Jan 29 22:24:47 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* sample/openssl/gen_csr.rb: follow OpenSSL::X509::Name change.
-	  ASN.1 type of subject DN elements were wrong.
-
-Thu Jan 29 22:19:51 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/*: remove $: trick.  [ruby-dev:22763]  use test/runner.rb to
-	  run test.
-
-Thu Jan 29 19:28:16 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (Request#initialize): reject only when a path is
-	  empty. [ruby-dev:22771]
-
-Thu Jan 29 18:54:08 2004  H.Yamamoto  <ocean@m2.ccsnet.ne.jp>
-
-	* dir.c (glob_helper): infinite loop bug in win32 code.
-	  [ruby-dev:22770]
-
-Thu Jan 29 17:03:49 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c: merge tuning from H.Yamamoto <ocean@m2.ccsnet.ne.jp>.
-	  [ruby-dev:22761]
-
-Thu Jan 29 11:32:14 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/rss/test_*: do $: trick while searching a module in the current
-	  directory.
-
-	* test/xsd/test_xmlschemaparser.rb, test/wsdl/test_emptycomplextype.rb,
-	  test/soap/helloworld/test_helloworld.rb,
-	  test/soap/calc/{test_calc.rb,test_calc2.rb}: do File.expand_path
-	  before using __FILE__.
-
-	* test/yaml/test_yaml.rb: assert_equals -> assert_equal.
-
-Thu Jan 29 01:56:02 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c: usec round-tripping skew. [ruby-core:2305]
-
-	* lib/yaml/rubytypes.rb: character Range now round-trips. [ruby-core:2306]
-
-	* test/yaml/test_yaml.rb: add Time and Range tests.
-
-Thu Jan 29 00:00:46 2004  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss: rss/parser.rb is always required.
-
-Wed Jan 28 15:09:14 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rss/*.rb: remove "test/" prefix.
-
-Wed Jan 28 13:07:02 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/extconf.rb: include iconv.h for libiconv.  [ruby-dev:22715]
-
-Wed Jan 28 12:43:07 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rss: rss library imported. [ruby-dev:22726]
-
-Wed Jan 28 04:29:41 2004  Eric Schwartz  <emschwar@fc.hp.com>
-
-	* lib/cgi/session.rb: use LOCK_SH to read, and a few other
-	  improvements.  [ruby-core:02328]
-
-Tue Jan 27 15:00:14 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el: better support for general delimited
-	  strings.  [ruby-dev:22695]
-
-Tue Jan 27 11:04:40 2004  FUKUMOTO Atsushi  <fukumoto@nospam.imasy.or.jp>
-
-	* ext/socket/socket.c (s_recvfrom): sending length should be an
-	  invariant while retrying on EAGAIN.  [ruby-talk:89962]
-
-Tue Jan 27 10:31:28 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (set_argv): fix condition.
-
-Tue Jan 27 02:26:31 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (WEBrick:HTTPUtils::parse_header):
-	  refine regex for header-name.
-
-Mon Jan 26 22:53:04 2004  Dave Thomas  <dave@pragprog.com>
-
-	* io.c: Remove documentation references to $defout.
-
-Mon Jan 26 14:41:46 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/weakref.rb (WeakRef::initialize): set up @__id before
-	  calling "super".
-
-	* lib/delegate.rb (Delegator::initialize): preserve
-	  singleton_method_added method [ruby-dev:22685]
-
-	* lib/delegate.rb (Delegator::initialize): use Kernel::raise
-	  instead of mere raise.  [ruby-dev:22681]
-
-Mon Jan 26 12:45:23 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: define CONST84 when TCL_MAJOR_VERSION == 7
-
-Mon Jan 26 11:30:58 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: Makefiles should depend on also rbconfig.rb.
-	  (ruby-bugs:PR#1256)
-
-	* ext/win32ole/win32ole.c (set_argv): set real arguments to
-	  WIN32OLE::ARGV.  [ruby-list:39073]
-
-Sun Jan 25 18:25:26 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_add_entry): third
-	  argument become optional.
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_initialize): ditto.
-
-	* ext/openssl/ossl_x509name.c (Init_x509name): emailAddress and
-	  domainComponent should be IA5String.
-
-Sun Jan 25 01:45:38 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): support
-	  virtual host.
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#virtual_host): add
-	  new method to register virtual hosting server.
-
-	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#lookup_server): add
-	  new method to lookup virtual hosting server.
-
-Sat Jan 24 13:06:26 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509hame.c (ossl_x509name_initialize): change
-	  second argument. it expected to be a Hash not an Integer.
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_add_entry): add new
-	  function for OpenSSL::X509::Name#add_entry.
-
-	* ext/openssl/ossl_x509name.c (Init_ossl_x509name): add constants
-	  OpenSSL::X509::Name::DEFAULT_OBJECT_TYPE and OBJECT_TYPE_TEMPLATE.
-
-	* ext/openssl/lib/openssl/x509.rb (OpenSSL::X509::Name#initialize):
-	  second argument takes OBJECT_TYPE_TEMPLATE by default.
-
-Fri Jan 23 02:26:30 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (num2i32): pack should not raise RangeError.
-	  [ruby-dev:22654]
-
-	* pack.c (pack_pack): do not auto convert nil to zero.
-
-Thu Jan 22 22:54:53 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (BEG_REGEXP): allow 8-bit characters in quoted
-	  strings for Novell GroupWise Internet Agent.
-
-	* lib/net/imap.rb (DATA_REGEXP): ditto.
-
-Thu Jan 22 18:35:49 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/e2mmap.rb (VERSION): remove unnecessary version checking.
-
-Thu Jan 22 16:21:02 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (string_content): reset lexical states at the beginning of
-	  string contents.  [ruby-list:39061]
-
-Thu Jan 22 08:08:50 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (opt_rescue): use NODE_ERRINFO() instead of
-	  NODE_GVAR("$!"), to avoid confusion from variable aliasing.
-	  [ruby-talk:90074]
-
-	* version.c (Init_version): remove obsolete constants VERSION
-	  etc.  [ruby-dev:22643]
-
-Thu Jan 22 01:46:32 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (newline_node): do not use NODE_NEWLINE node anymore,
-	  use NEWLINE flag instead.
-
-Thu Jan 22 01:12:12 2004  Siena.  <siena@faculty.chiba-u.jp>
-
-	* missing/os2.c (chdir, getcwd):
-	  use _chdir2 and _getcwd2 supporting multiple drives in OS/2 with EMX.
-
-Thu Jan 22 00:33:52 2004  Siena.  <siena@faculty.chiba-u.jp>
-
-	* configure.in: check availability of link(). [ruby-dev:22237]
-	* file.c (rb_file_s_link): raise an exception when link() is unavailable.
-	* missing/os2.c (link): removed. File#link isn't supported.
-	* bcc32/Makefile.sub: define HAVE_LINK to enable link(). [ruby-dev:22241]
-	* win32/Makefile.sub: ditto.
-
-Thu Jan 22 00:26:25 2004  Siena.  <siena@faculty.chiba-u.jp>
-
-	* ChangeLog: typo: RUBY_MBCHAR_MAX was RUBY_MBCHAR_MAXSIZE.
-
-Thu Jan 22 00:12:51 2004  Siena.  <siena@faculty.chiba-u.jp>
-
-	* defines.h: define RUBY_MBCHAR_MAX instead of MB_CUR_MAX.
-	* dir.c (Next, emx_mblen): use RUBY_MBCHAR_MAX for mblen().
-	* file.c (CharNext): ditto.
-	* ruby.c (translate_char): ditto.
-	* util.c (__crt0_glob_function): ditto.
-
-Thu Jan 22 00:10:01 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/base64.rb: :nodoc: the Deprecated module
-
-Wed Jan 21 23:52:39 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: Interix(SFU) support.
-
-Wed Jan 21 23:03:45 2004  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: remove O_NONBLOCK, thanks \ay
-	* lib/drb/extserv.rb: typo
-
-Wed Jan 21 17:57:56 2004  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (envelope): allow NIL.
-	* lib/net/imap.rb (body): ditto.
-	* lib/net/imap.rb (number): ditto.
-	* lib/net/imap.rb (ensure_nz_number): show a detailed error
-	  message.
-
-Wed Jan 21 16:44:15 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (merge_libs): squeeze successive same libraries.
-	  [ruby-dev:22652]
-
-Wed Jan 21 16:10:36 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/base64.rb: enclosed in a module.  [ruby-core:02285]
-
-Wed Jan 21 16:01:26 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/rmd160/extconf.rb: have_library appends found library.
-
-Wed Jan 21 11:36:00 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_gethostbyname): returns host if
-	  ai_canonname is NULL. (ruby-bugs PR#1243)
-
-	* parse.y (block_append): update nd_end for "real" head node.
-	  [ruby-list:39058]
-
-Tue Jan 20 14:48:28 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: should check <openssl/conf_api.h> instead
-	  of OPENSSL_VERSION_NUMBER. [ruby-list:39056]
-
-Tue Jan 20 14:43:17 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/base64.rb: Add RDoc
-
-Tue Jan 20 14:25:51 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/abbrev.rb: Add RDoc
-
-Tue Jan 20 13:22:39 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb: Document aliases at
-	  top-most level.
-
-	* lib/English.rb: Document English.rb.
-
-Tue Jan 20 04:41:58 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_marshal.rb (MarshalTestLib::test_exception): test
-	  for [ruby-dev:22604].
-
-	* test/ruby/test_marshal.rb (MarshalTestLibtest_singleton): test
-	  for [ruby-dev:22588].
-
-Tue Jan 20 02:38:13 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_class): should not dump singleton class.
-	  [ruby-dev:22631]
-
-Tue Jan 20 02:49:22 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: add check for OpenSSL version.
-	  [ruby-list:39054]
-
-Mon Jan 19 23:56:20 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (name_err_mesg_to_str): inverted condition for result of
-	  inspection.  [ruby-dev:22628]
-
-Mon Jan 19 22:24:28 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* sample/exyacc.rb: escape '}' to avoid warning.
-
-	* lib/rdoc/parsers/parse_c.rb: escape '{' and '}' to avoid warnings.
-
-Mon Jan 19 21:28:06 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/defs.h, win32/win3.c, win32/win32.h, file.c: remove
-	  useless casts for Borland C.
-
-Mon Jan 19 17:39:38 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (NameError::message): internal use only.
-
-	* eval.c (rb_method_missing): use hidden constant.
-
-Mon Jan 19 16:30:53 2004  akira yamada  <akira@ruby-lang.org>
-
-	* test/ruby/test_time.rb: added tests for [ruby-dev:22614] and
-	  [ruby-dev:22617].
-
-Mon Jan 19 13:09:21 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/extmk.rb, win32/Makefile.sub, win32/configure.bat,
-	  win32/setup.mak: --with-static-linked-ext support on mswin32.
-
-Mon Jan 19 06:49:07 2004  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: zone was wrong when it was behind UTC.
-	  Thanks Mark J. Reed.
-
-	* lib/date/format.rb: %z is now always replaced by four digits
-	  with a leading plus or minus sign.
-
-	* sample/cal.rb: added a class, anyway.
-
-Mon Jan 19 01:08:39 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c, error.c, eval.c, intern.h, object.c, variable.c:
-	  do not set path if it is a singleton class.  [ruby-dev:22588]
-
-	* lib/cgi.rb (CGI::QueryExtension): give extended string, not a
-	  delegater object.
-
-Sun Jan 18 23:59:44 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/charset_alias.rb: prefer us_EN locale encodings or
-	  former.  [ruby-dev:22609]
-
-	* ext/iconv/iconv.c (iconv_create): raise InvalidEncoding
-	  exception when EINVAL.
-
-Sun Jan 18 23:16:34 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c, error.c, file.c, io.c, numeric.c, object.c, re.c, struct.c,
-	  time.c: marked init_copy functions nodoc.
-
-Sun Jan 18 20:47:35 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ruby.c: use translate_char() on Cygwin.
-
-Sun Jan 18 20:00:16 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/wsdlDriver.rb, lib/wsdl/soap/operation.rb: add support of
-	  "parts" attribute of soap:body element in WSDL.
-
-	* lib/wsdl/xmlSchema/schema.rb: friendly warning message for
-	  simpleType element which is not supported for now.
-
-	* test/wsdl/soap/{soapbodyparts.wsdl,test_soapbodyparts.wsdl}: new
-	  files.
-
-Sun Jan 18 16:46:48 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_overflow_p): should return results.  [ruby-dev:22614]
-
-Sun Jan 18 12:07:24 2004  Siena.  <siena@faculty.chiba-u.jp>
-
-	* test/ruby/test_time.rb: new test case to test Time#[+-].
-
-	* time.c (time_plus, time_minus): fix RangeError for a negative
-	  argument in environments whose time_t is unsigned. [ruby-dev:22608]
-
-Sun Jan 18 02:33:26 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* defines.h (_WIN32): undef _WIN32 on Cygwin before defining DOSISH.
-
-Sun Jan 18 00:23:55 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (class2path): check anonymous class/module before
-	  checking referable, and allow singleton classes.
-
-Sat Jan 17 23:58:51 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (NameError::Message): new class for lazy evaluation of
-	  message to ensure replaced before marshalling.  [ruby-dev:22604]
-
-	* eval.c (rb_method_missing): use NameError::Message.
-
-Sat Jan 17 21:49:50 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/time.rb (test_rfc2822, test_rfc3339, test_encode_xmlschema):
-	  should not expect that all platforms handle negative time_t value.
-
-Fri Jan 16 23:53:09 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (proc_eq): compare also arguments and environment
-	  (including local variables).  [ruby-dev:22590]
-
-Fri Jan 16 14:33:35 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (class2path): get class path and check referable.
-	  [ruby-dev:22588]
-
-Thu Jan 15 12:58:26 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_read): do not append EOF.  (ruby-bugs-ja:PR#585)
-
-	* io.c (rb_io_fwrite): ad-hockery hack to get rid of HP-UX stdio
-	  weird behavior.  [ruby-dev:22424]
-
-Wed Jan 14 21:13:06 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/inlinetest.rb (InlineTest::eval_part): eval under the top
-	  level environment.
-
-Wed Jan 14 17:54:17 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/inlinetest.rb (InlineTest::loadtest): require instead of
-	  load, to get rid of multiple loading.
-
-Wed Jan 14 13:30:52 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/extconf.rb: wrapper iconv.rb is dependent on platform.
-
-Wed Jan 14 09:32:02 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* MANIFEST: add test/net/test_httpheader.rb. (commit miss?)
-
-Wed Jan 14 00:58:35 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_Proc): move SystemStackError from under
-	  StandardError to Exception.  [ruby-talk:89782]
-
-Tue Jan 13 18:03:02 2004  Ian Macdonald  <ian@caliban.org>
-
-	* file.c (rb_stat_wr, rb_stat_ww): New functions
-	  implementing new methods (File::Stat#world_readable?,
-	  File::Stat#world_writable?).
-
-Tue Jan 13 16:53:25 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c: omission of Date library code caused
-	  test suite failure. [ruby-core:2251]
-
-Tue Jan 13 16:50:03 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: use $0 as the default application class name.
-
-Tue Jan 13 14:48:00 2004  Ian Macdonald  <ian@caliban.org>
-
-	* lib/pathname.rb: New methods (Pathname#world_readable?,
-	  Pathname#world_writable?).
-
-Tue Jan 13 14:48:01 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): allow no "when" case. [ruby-dev:22578]
-
-	* ruby.h (rb_class_of): reduce branch. [ruby-dev:22577]
-
-	* ruby.h (rb_type): ditto.
-
-Tue Jan 13 14:26:59 2004  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/test/unit/ui/testrunnerutilities.rb (TestRunnerUtilities):
-	  moved run method which allows output level.  [ruby-dev:22554]
-
-Tue Jan 13 13:04:24 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/test_*.rb: Pathname#parent -> Pathname#dirname.
-
-Tue Jan 13 11:38:58 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/yaml/test_yaml.rb (YAML_Unit_Tests::test_spec_type_{int,float}):
-	  fix syntax error.
-
-Tue Jan 13 07:52:40 2004  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/bytecode.c: turn off default implicit typing.
-
-	* ext/syck/implicit.c: detect base60 integers.
-
-	* ext/syck/rubyext.c: handle base60, as well as hex and octal
-	  with commas.  implicit typing of ruby symbols.
-
-	* test/yaml/test_yaml.rb: add test.
-
-Tue Jan 13 04:29:52 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_driver.rb (RiDriver::report_method_stuff):
-	  Show fully-qualified class names in class list.
-
-Tue Jan 13 01:24:17 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (test_wr): Rdoc fix.  [ruby-core:02225]
-
-Tue Jan 13 01:04:37 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_paths.rb (RI::Paths): First attempt at
-	  incorporating DESTDIR in the rdoc installation.
-
-Mon Jan 12 23:26:21 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (primary): fix position after FCALL.  [ruby-dev:22574]
-
-Mon Jan 12 18:00:11 2004  Ian Macdonald  <ian@caliban.org>
-
-	* file.c (test_wr, test_ww): New functions implementing new
-	  methods (File::world_readable?, File::world_writable?).
-
-	* file.c (S_IRUGO, S_IGUGO): New macros.
-
-Mon Jan 12 12:07:22 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::do_methods):
-	  Someone changed the "// in eval.c" comments to "/*...*/" style,
-	  so the parsing of the source file name broke.
-
-	* object.c: Remove spurious space in TrueClass documentation.
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::find_body): Fix
-	  bad regexp: if the code before a documented method contained
-	  a comment that wasn't terminated by whitespace, that comment
-	  and all intervening code was included in the following
-	  method's documentation.
-
-	* lib/rdoc/ri/ri_formatter.rb (RI::HtmlFormatter::break_to_newline):
-	  HTML formats need explicit line breaks.
-
-Mon Jan 12 02:24:07 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_formatter.rb (RI::HtmlFormatter): Add HTML
-	  generation support to ri (Elliot Hughes)
-
-Sun Jan 11 23:54:41 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* env.h (ruby_frame, ruby_scope, ruby_in_eval, ruby_class,
-	  ruby_dyna_vars): export.  [ruby-dev:22566]
-
-Sun Jan 11 02:35:53 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (make_hostent): a bug in brace position.
-
-	* configure.in: install rdoc by default. if you do not want to
-	  install rdoc, specify --disable-install-doc.
-
-Sun Jan 11 02:07:47 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_options.rb (RI::Options::OptionList::OptionList):
-	  Also accept command line options via the 'RI' environment variable.
-
-Sat Jan 10 21:27:41 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (eval): need to add message delimiter. [ruby-dev:22561]
-
-Sat Jan 10 01:54:50 2004  Eric Sunshine  <sunshine@sunshineco.com>
-
-	* defines.h (__NeXT__): Ensure that all standard S_IRUSR, S_IWGRP,
-	  S_IRWXO, etc. macros are defined since future code might require
-	  them (even though present code only requires a subset).
-
-	* defines.h (__NeXT__): Bug fix: WORDS_BIGENDIAN was not being set
-	  correctly on Rhapsody when -arch compiler flag was used (via
-	  configure's --enable-fat-binary option).
-
-Sat Jan 10 23:01:41 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBPATHFLAG, RPATHFLAG): enclose paths with single
-	  quotes.  [ruby-dev:22564]
-
-	* lib/mkmf.rb (libpathflag): do not enclose with quotes always.
-
-	* {bcc32,win32,wince}/Makefile.sub (LIBPATHFLAG): quoted.
-
-Sat Jan 10 22:46:18 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_inspect): new method, Dir#inspect.  [ruby-dev:22562]
-
-Fri Jan  9 17:36:51 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (make_hostent): getaddrinfo(3) on BSD do not
-	  fill ai_canonname if serv is not supplied.  (ruby-bugs PR#1243)
-
-Fri Jan  9 13:14:59 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb: do not ignore exceptions(LoadError
-	  and SystemExitError) while loading a testcase.  smell of bug.
-
-	* test/testunit/collector/test_dir.rb: add new test of the LoadError.
-
-	* test/drb/{test_drbssl.rb,test_drbunix.rb}: do not define testcase if
-	  openssl is not installed.
-
-	* test/testunit/collector/test_dir.rb: assert_raises -> assert_raise.
-
-Fri Jan  9 11:52:16 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* rubysig.h: <errno.h> is needed to use errno which may be a macro.
-
-Fri Jan  9 11:20:24 2004  Siena.  <siena@faculty.chiba-u.jp>
-
-	* ext/extmk.rb (extmake): should not reduce necessary libraries.
-	  [ruby-dev:22440]
-
-	* lib/mkmf.rb (merge_libs): merge libraries according to
-	  dependency.
-
-Fri Jan  9 10:05:23 2004  Siena.  <siena@faculty.chiba-u.jp>
-
-	* lib/mkmf.rb (libpathflag): use single quotes.  [ruby-dev:22440]
-
-Thu Jan  8 23:49:21 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (RDOCTARGET): new macro.  if you want to install
-	  rdoc documentation, you need to run configure with
-	  --enable-install-doc.
-
-Thu Jan  8 21:17:43 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_pkey.c (ossl_pkey_to_der): removed; it returns
-	  public key only.
-
-	* ext/openssl/ossl_pkey_dh.c (ossl_dh_to_der): new function for
-	  OpenSSL::PKey::DH#to_der.
-
-	* ext/openssl/ossl_pkey_dsa.c (ossl_dsa_to_der): new function for
-	  OpenSSL::PKey::DSA#to_der.
-
-	* ext/openssl/ossl_pkey_rsa.c (ossl_rsa_to_der): new function for
-	  OpenSSL::PKey::RSA#to_der.
-
-Thu Jan  8 18:25:29 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (glob_helper): should not recurse in exceptional status.
-
-Thu Jan  8 16:51:04 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/wsdl/datetime/test_datetime.rb: fixed a stupid testcase which
-	  dumps "E" at month-end.
-
-Thu Jan  8 11:20:01 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* eval.c, object.c, process.c, re.c: don't use C++ style comments.
-
-Thu Jan  8 08:46:14 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/rubyext.c (yaml_org_handler): lazy-load Date for
-	  static-ext.
-
-Thu Jan  8 07:06:30 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: preserve order in Setup.  [ruby-dev:22503]
-
-	* ext/extmk.rb: move dependent libraries just after depended
-	  libraries.
-
-	* ext/digest/*/extconf.rb: depend on digest.
-
-Thu Jan  8 04:36:17 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI#initialize): should create
-	  @config[:Logger] if it was not given.
-
-Wed Jan  7 22:28:12 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (glob_helper): fix memory leak.
-
-Wed Jan  7 21:15:07 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* sample/webrick/*: new files.
-
-	* MANIFEST: add sample/webrick/*
-
-Wed Jan  7 20:51:51 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/net/test_httpheader.rb: new file.
-
-	* MANIFEST: add test/net/test_httpheader.rb.
-
-Wed Jan  7 20:42:06 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTPHeader#content_length): should return nil
-	  unless header exists. [ruby-dev:22519]
-
-Wed Jan  7 14:26:05 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb (TkPanedWindow): use epath for embedded windows.
-
-	* ext/tk/lib/tktext.rb: use epath for embedded windows.
-
-	* ext/tk/lib/tkcanvas.rb: use epath for window items.
-
-Wed Jan  7 14:24:04 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/{attachment.rb,mimemessage.rb}: added from soap4r/1.5.2.
-
-Wed Jan  7 13:00:18 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/ri/ri_driver.rb: Fix problem where ri was
-	  being too eager to find matches of ambiguous method
-	  names (such as "ri Thread.join" would return both
-	  Thread.join and ThreadsWait.join)
-
-Wed Jan  7 12:35:41 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/debug.rb: revert command parse regexps.  [ruby-list:39014] by
-	  Shirai,Kaoru.
-
-Wed Jan  7 08:21:04 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parserfactory.rb: Check for shebang
-	  line in files that would otherwise be treated as
-	  plain text.
-
-Tue Jan  6 22:13:34 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_modfunc): should break if m has no super class.
-	  [ruby-dev:22498]
-
-Tue Jan  6 21:51:37 2004  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (fptr_finalize): should save errno just after failure.
-	  [ruby-dev:22492]
-
-Tue Jan  6 20:51:10 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb(Logger#msg2str): no special treatment for the object
-	  which responds to :to_str.
-
-	* lib/logger.rb(LogDevice#initialize): remove type checking if the
-	  given object is a String.  Kernel.open handles it correctly.
-
-	* test/logger/test_logger.rb: follow above change (ArgumentError ->
-	  TypeError.)
-
-Tue Jan  6 14:53:14 2004  Dave Thomas  <dave@pragprog.com>
-
-	* bin/ri: split out the display side, making it pluggable. Added
-	  new ri_driver and ri_display files in lib/rdoc/ri.
-
-Tue Jan  6 11:29:43 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/inlinetest.rb, test/{test_generator.rb,test_ipaddr.rb,
-	  test_pathname.rb,test_pp.rb,test_prettyprint.rb,test_set.rb,
-	  test_time.rb,test_tsort.rb: added.
-
-Tue Jan  6 09:38:27 2004  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* import soap4r/1.5.2;
-
-	* lib/soap/{attachment.rb,baseData.rb,encodingstyle/soapHandler.rb}:
-	  introduce SOAPExternalReference class as a referenct to SOAPEnvelope
-	  external content.
-
-	* lib/soap/{attachment.rb,mimemessage.rb}: great SwA (SOAP messages
-	  with Attachments) support code by Jamie Herre.
-
-	* lib/soap/{element.rb,marshal.rb,parser.rb,processor.rb,
-	  streamHandler.rb,wsdlDriver.rb}: SwA support.
-
-	* lib/soap/rpc/{cgistub.rb,driver.rb,element.rb,proxy.rb,router.rb,
-	  soaplet.rb}: SwA support and refactoring.
-
-	* lib/soap/generator.rb, lib/soap/mapping/mapping.rb: follow
-	  SOAPReference#initialize signature change.
-
-	* lib/soap/mapping/factory.rb: deleted unused methods.
-
-	* lib/soap/mapping/rubytypeFactory.rb: do no ignore case while xsi:type
-	  string <-> Ruby class name matching.
-
-	* lib/xsd/datatypes.rb: check the smallest positive non-zero
-	  single-precision float exactly instead of packing with "f".
-	  [ruby-talk:88822]
-
-	* test/soap/test_basetype.rb, test/xsd/test_xsd.rb: use 1.402e-45, not
-	  1.4e-45.  1.4e-45 is smaller than 2 ** -149...
-
-	* test/soap/test_basetype.rb, test/soap/marshal/test_marshal.rb,
-	  test/xsd/test_xsd.rb: use "(-1.0 / (1.0 / 0.0))" instead of "-0.0".
-
-	* test/soap/test_streamhandler.rb: revert to the previous test that
-	  warns "basic_auth unsupported under net/http".
-
-Tue Jan  6 06:37:53 2004  Dave Thomas  <dave@pragprog.com>
-
-	* bin/rdoc: Add --ri-system switch
-
-	* lib/.document: Update with list of files that seem to have
-	  documentation
-
-	* lib/test/unit.rb: Reorder comment to make it RDoc friendly.
-
-	* Makefile.in: add install-nodoc target, and make it
-	  generate RDoc on default install.
-
-	* lib/rdoc/ri/ri_options.rb (RI::Options::parse): Add
-	  --doc-dir option to ri.
-
-Tue Jan  6 00:04:40 2004  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_method_or_yield_parameters):
-	  fix parsing if there are braces in a method parameter list
-
-Tue Jan  6 01:01:04 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/dir.h, win32/win32.c: fix patch miss.
-
-	* win32/Makefile.sub: fix file dependency.
-
-Mon Jan  5 20:32:00 2004  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/logger.rb: enhanced documentation.
-
-Mon Jan  5 18:58:47 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c: merge tuning from H.Yamamoto <ocean@m2.ccsnet.ne.jp>.
-	  [ruby-dev:22486]
-
-	* pack.c (pack_unpack): unpack requires big endian offet (OFF16B
-	  and OFF32B).  The patch is from Minero Aoki in [ruby-dev:22489]
-
-	* pack.c (OFF16B): add big-endian offset again.
-
-Mon Jan  5 03:00:53 2004  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_pack.rb: new test test_unpack_N.
-
-Mon Jan  5 01:47:53 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): remove duplicated object files
-	  from $objs on DOSISH platforms.
-
-Sat Jan  3 02:44:48 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rubysig.h (TRAP_END): preserve errno before switching context.
-	  [ruby-core:02137]
-
-Sat Jan  3 01:18:08 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c: merge tuning from H.Yamamoto <ocean@m2.ccsnet.ne.jp>.
-	  [ruby-dev:22476]
-
-Fri Jan  2 14:54:11 2004  Dave Thomas  <dave@pragprog.com>
-
-	* bin/ri: Add new --classes option, and arrange for
-	  help messages to be paged too.
-
-	* bin/rdoc: Add statistics.
-
-	* process.c: (MG) Added Process documentation
-
-	* lib/rdoc/ri/ri_formatter.rb (RI::AttributeFormatter::wrap):
-	  Fix problem with labels not displaying in RI labeled
-	  lists using BS and ANSI modes.
-
-Fri Jan  2 01:50:13 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_eof): ARGF.eof? should not have any side effect.
-	  [ruby-dev:22469]
-
-Thu Jan  1 09:03:20 2004  Dave Thomas  <dave@pragprog.com>
-
-	* bin/ri (report_class_stuff): Fix problem with ambiguous nested
-	  classes not matching.
-
-Wed Dec 31 17:25:17 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_each_byte): should return self.  [ruby-dev:22465]
-
-Wed Dec 31 15:05:00 2003  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/pathname.rb: Corrected small coding error.
-
-Wed Dec 31 15:00:00 2003  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/pathname.rb: Completed documentation.
-
-Wed Dec 31 11:20:34 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::do_methods): Make
-	  file referenced in "// in sss.c" relative to current file.
-
-Wed Dec 31 11:17:37 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/generators/html_generator.rb: Fix problem when
-	  a public method was aliased, but the alias is then
-	  made private, and hence doesn't appear in RDoc output.
-
-Wed Dec 31 01:33:05 2003  Dave Thomas  <dave@pragprog.com>
-
-	* array.c, error.c, eval.c, io.c, prec.c, range.c, re.c,
-	  string.c, time.c: Add RDoc for Kernel functions, and tidy.
-
-Tue Dec 30 19:39:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_readline): should raise EOFError at the end of
-	  files.  [ruby-dev:22458]
-
-	* io.c (argf_read): should concatenate input files when length
-	  argument is nil. [ruby-dev:22450]
-
-	* io.c (argf_read): should update supplied string buffer (2nd
-	  argument) even when IO#read is called multiple times.
-
-	* io.c: should initialize lineno by zero. [ruby-dev:22460]
-
-Tue Dec 30 12:30:30 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/code_objects.rb (RDoc::Context::find_symbol): If a
-	  class and a method have the same name, finding Xxx.abc was trying
-	  to find 'abc' in method 'Xxx', not class 'Xxx'.
-
-Tue Dec 30 08:32:32 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_method):
-	  Handle undoing nsting of yield parameters correctly for:
-
-	    def each_entry(&b) Dir.foreach(@path) {|f| yield P.new(f) } end
-
-Tue Dec 30 07:30:00 2003  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/pathname.rb: Added documentation.
-
-Mon Dec 29 20:08:17 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (GenericRequest#initialize): check if path
-	  begins with '/'.
-
-	* lib/net/http.rb: def m( arg ) -> def m(arg)
-
-Mon Dec 29 12:51:02 2003  Dave Thomas  <dave@pragprog.com>
-
-	* eval.c: Add RDoc for Kernel global functions.
-
-Mon Dec 29 11:00:16 2003  Dave Thomas  <dave@pragprog.com>
-
-	* array.c: Tidy up RDoc loose ends.
-
-Mon Dec 29 05:05:51 2003  Dave Thomas  <dave@pragprog.com>
-
-	* struct.c, random: Add RDoc comments
-
-Mon Dec 29 02:25:00 2003  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/optparse.rb: Improved documentation.
-
-Mon Dec 29 02:20:54 2003  Dave Thomas  <dave@pragprog.com>
-
-	* eval.c: Add RDoc for class Proc, Method, UnboundMethod
-
-Mon Dec 29 02:20:26 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: fix install directory if destdir and compile_dir are
-	  not in the same drive.
-
-	* ext/extmk.rb: ditto. [ruby-list:39009]
-
-	* win32/Makefile.sub, win32/README.win32, win32/configure.bat,
-	  win32/setup.mak: new configure scheme. use ``configure --prefix=dir''
-	  instead of ``nmake DESTDIR=dir install''.
-
-Mon Dec 29 00:41:44 2003  Dave Thomas  <dave@pragprog.com>
-
-	* math.c: Add RDoc comments
-
-Sun Dec 28 20:19:11 2003  Tanaka Akira  <akr@m17n.org>
-
-	* ext/stringio/stringio.c (strio_sysread): StringIO.new.sysread didn't
-	  raise EOFError.
-
-	* ext/zlib/zlib.c (gzreader_gets): don't increment lineno when
-	  gzfile_read_all returns "".
-
-Sun Dec 28 15:25:08 2003  Dave Thomas  <dave@pragprog.com>
-
-	* class.c,object.c,parse.y,sprintf.c,variable.c: Document classes
-	  Object, Module, etc...
-
-Sun Dec 28 11:55:29 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/csv/test_csv.rb: generate bom.csv and mac.csv files on the fly.
-	  [ruby-talk:88852]
-
-	* test/csv/{bom.csv,mac.csv}: removed.
-
-Sun Dec 28 08:56:51 2003  Dave Thomas  <dave@pragprog.com>
-
-	* eval.c: Thead[Group] RDoc (thanks to MG)
-
-Sun Dec 28 03:50:05 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::find_override_comment):
-	  Escape method names used in regexp
-
-Sun Dec 28 01:46:02 2003  Dave Thomas  <dave@wireless_3.local.thomases.com>
-
-	* lib/rdoc/ri/ri_formatter.rb (RI::TextFormatter::display_flow_item):
-	  Add support for rules in 'ri' output.
-
-Sun Dec 28 01:35:35 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::find_body):
-	  Sometimes the Ruby source aliases two otherwise
-	  unrelated methods (for example Kernel#object_id and
-	  Kernel#hash are both the same C function). Provide a
-	  facility to allow the methods to be documented
-	  separately.
-
-Sun Dec 28 01:05:31 2003  Dave Thomas  <dave@pragprog.com>
-
-	* marshal.c, signal.c: RDoc collemts added by Elliott Hughes
-
-Sun Dec 28 00:46:25 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/parsers/parse_c.rb (RDoc::C_Parser::find_class_comment):
-	  Some Ruby source uses lower-case class names for the
-	  Init_Xxx C function name.
-
-Sat Dec 27 23:41:46 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: fix "test: too many arguments" error.
-
-Sat Dec 27 15:32:40 2003  Dave Thomas  <dave@wireless_3.local.thomases.com>
-
-	* time.c: Add RDoc comments for Time class.
-
-Sat Dec 27 15:07:26 2003  Dave Thomas  <dave@pragprog.com>
-
-	* object.c: Add RDoc comments for Symbol class.
-
-Sat Dec 27 14:39:53 2003  Dave Thomas  <dave@pragprog.com>
-
-	* numeric.c (Init_Numeric): Add RDoc comments.
-
-Sat Dec 27 00:44:00 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (next_argv): warn always for stdin on inplace edit mode.
-
-	* io.c (read_all): need to check string value.
-
-	* io.c (argf_read): allow ARGF.read(nil).  [ruby-dev:22433]
-
-Fri Dec 26 23:02:09 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_backquote): need not to check nil result.
-	  [ruby-core:02078]
-
-	* io.c (rb_io_getline): should return nil when read_all gives
-	  empty string, even when nil rs is specified. [ruby-core:02077]
-
-Fri Dec 26 18:33:54 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check if getcontext and setcontext are available.
-
-	* eval.c: use presence of getcontext/setcontext.
-
-Fri Dec 26 16:40:53 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (PathnameTest#test_plus): add 2 assertions.
-
-Fri Dec 26 14:05:13 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_pack.rb: new test test_pack_N.
-
-Fri Dec 26 12:53:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): add sign check for 'i', and 'l'.
-	  [ruby-dev:22427]
-
-	* bignum.c (rb_quad_pack): add range check for 'quad int'.
-
-Fri Dec 26 10:58:58 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* MANIFEST: add vms/config.h and remove vms/config.h_in.
-
-Fri Dec 26 10:42:00 2003  AKIYOSHI, Masamichi  <masamichi.akiyoshi@hp.com>
-
-	* io.c: [VMS] "rfm=stmlf" is specified for open() and fopen().
-
-Thu Dec 25 22:29:53 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_update): don't return any value.
-
-Thu Dec 25 15:30:17 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_update): call rb_str_modify().
-
-Thu Dec 25 05:08:09 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (search_required): search actual file name once when no
-	  extension specified.
-
-Thu Dec 25 04:00:44 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* stable version 1.8.1 released.
-
-Thu Dec 25 00:17:53 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: check for nanosleep, -lrt if required.
-	  [ruby-core:02059]
-
-	* eval.c (thread_timer): use select(2) if nanosleep(2) is not
-	  available.
-
-	* eval.c: check __stub_getcontext for glibc on some platforms.
-	  [ruby-list:38984]
-
-Wed Dec 24 23:48:04 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/test_basetype.rb, test/soap/marshal/test_marshal.rb
-	  test/xsd/test_xsd.rb: use "(-1.0 / (1.0 / 0.0))" instead of "-0.0"
-	  to express -0.0.  [ruby-talk:88786]
-
-Wed Dec 24 23:29:30 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/tsort.rb (test_orphaned_break): removed.
-
-Wed Dec 24 20:53:06 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tkmulticolumnlist.rb: new sample
-
-	* ext/tk/sample/tkmultilistframe.rb: bug fix
-
-Wed Dec 24 20:37:37 2003  Eric Sunshine  <sunshine@sunshineco.com>
-
-	* configure.in (LDSHARED): Fixed typographical error in assignment of
-	  LDSHARED for Rhapsody which caused linking of extension modules to
-	  fail.
-
-Wed Dec 24 17:51:18 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_thread_flock): enable thread support again.
-
-Wed Dec 24 16:46:08 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (catch_timer): do not call rb_thread_schedule() inside to
-	  avoid pthread_mutex_lock() deadlock.  interrupts to system calls
-	  are detected by TRAP_END via EINTR error.
-
-	* eval.c (thread_timer): do not post signal unless it is
-	  absolutely necessary.
-
-	* rubysig.h (TRAP_END): add CHECK_INTS to switch thread.
-
-	* regex.c (re_compile_pattern): check if nextp is smaller than
-	  pend.  [ruby-dev:22372]
-
-	* eval.c (umethod_bind): remove method overridden check.
-	  [ruby-dev:22366]
-
-Wed Dec 24 16:13:05 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read): should check for error
-	  status by SSL_get_error().
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_write): ditto.
-
-Wed Dec 24 14:23:27 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): clear the buffer argument
-	  when returning nil.  [ruby-dev:22363]
-
-	* test/ruby/ut_eof.rb (TestEOF::test_eof_0, TestEOF::test_eof_1):
-	  add buffer argument tests.
-
-Wed Dec 24 14:07:55 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: Modules are allowed to rescue.
-
-	* lib/test/unit/autorunner.rb: show output_level in order.
-
-	* lib/test/unit/collector/dir.rb: get rid of successive same
-	  directories in load path.
-
-	* test/testunit/test_assertions.rb (test_assert_nothing_raised,
-	  test_assert_raise): test for modules.
-
-Wed Dec 24 13:43:34 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (authenticate): remove "\n" from base64 encoded
-	  strings.
-
-Wed Dec 24 11:26:41 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/fileutils/test_fileutils.rb: should not create any
-	  files or directories in current directory.  [ruby-talk:88724]
-
-Wed Dec 24 10:29:53 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): never return nil at
-	  unlimited read.  [ruby-dev:22334]
-
-	* ext/stringio/stringio.c (strio_read): support second
-	  argument.  [ruby-dev:22350]
-
-Wed Dec 24 09:38:49 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (arg): should return 0 after error.  [ruby-dev:22360]
-
-Wed Dec 24 00:56:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): do not return nil at the end of file.
-	  [ruby-dev:22334]
-
-	* io.c (argf_read): do not depend on nil at eof behavior of
-	  IO#read().
-
-	* eval.c (rb_thread_join): dup exception before re-raising it.
-
-	* io.c (rb_io_eof): call clearerr() to prevent side effect.  this
-	  patch is supplied by Masahiro Sakai <sakai@tom.sfc.keio.ac.jp>.
-	  [ruby-dev:22234]
-
-	* pack.c (OFF16): get offset for big endian machines.
-
-	* pack.c (pack_pack): use OFF16 instead of OFF16B.
-	  [ruby-dev:22344]
-
-	* pack.c (pack_unpack): ditto.
-
-Tue Dec 23 22:47:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_check_readable): set FMODE_RBUF always, even if
-	  NEED_IO_SEEK_BETWEEN_RW is not defined. [ruby-dev:22340]
-
-	* io.c (rb_io_check_writable): clear FMODE_RBUF before writing
-	  something.
-
-Tue Dec 23 22:25:00 2003  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/optparse.rb: incomplete RDoc documentation added in place of
-	  existing RD comments.  Tabs converted to spaces.
-
-Tue Dec 23 19:44:47 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/test_streamhandler.rb (test_basic_auth): removed.
-	  soap4r + basic_auth is not officially supported in ruby/1.8.1 even
-	  though soap4r + basic_auth + http-access2 should run fine.
-
-Tue Dec 23 19:42:59 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_ungetc): raise an exception at unread stream to
-	  avoid unspecified behavior.  [ruby-dev:22330]
-
-	* test/ruby/test_system.rb (test_syntax): glob relatively from
-	  __FILE__.
-
-Tue Dec 23 18:09:40 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): remove unnecessary negative value check.
-	  [ruby-dev:22329]
-
-Tue Dec 23 17:26:55 2003  KONISHI Hiromasa  <konishih@fd6.so-net.ne.jp>
-
-	* bcc32/Makefile.sub (config.h): bcc has finite(). [ruby-list:38940]
-
-Tue Dec 23 16:08:16 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/rexml/encodings/US-ASCII.rb: typo.  [ruby-talk:88650]
-
-	* test/ruby/test_system.rb: num of asserts depended on running dir.
-
-	* test/xsd/test_noencoding.rb: rexml + without iconv/uconv cannot
-	  handle euc-jp.  install iconv, uconv or xmlscan.
-
-Tue Dec 23 14:13:51 2003  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic::check_userinfo,
-	  URI::Generic::check_user, URI::Generic::check_password): tests
-	  conflicts/depends with other components closely.
-
-	* test/uri/test_generic.rb (TestGeneric::test_set_component):
-	  added tets.
-
-Tue Dec 23 11:08:34 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/xsd/test_noencoding.rb: rescue Errno::EINVAL and do not test.
-	  "euc-jp" might not be in supported encoding name list.
-	  [ruby-talk:88650]
-
-Tue Dec 23 06:10:31 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (CGI): add support for mod_ruby.
-
-	* lib/webrick/cgi.rb (CGI::Socket): add check for existence of
-	  OpenSSL module in all HTTPS related methods.
-
-	* lib/webrick/cgi.rb (CGI::Socket#cipher): should create similar
-	  value to OpenSSL::SSLSocket#cipher.
-
-	* lib/webrick/httpresponse.rb (HTTPResponse#setup_header): should
-	  set "connection: close" if @keep_alive is false.
-
-	* lib/webrick/https.rb (HTTPrequest#meta_vars): add supprt for
-	  SSL_PROTOCOL, SSL_CIPHER_USEKEYSIZE and SSL_CIPHER_ALGKEYSIZE.
-
-Mon Dec 22 23:00:05 2003  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic::check_opaque): fixed typo.
-
-Mon Dec 22 21:59:24 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (map_charset): always ensure code is a String.
-
-Mon Dec 22 21:15:29 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_mod_init_copy): always copy singleton class.
-	  [ruby-dev:22325]
-
-Mon Dec 22 20:44:36 2003  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic#route_from): accepts urls which
-	  has no host-part.
-
-	* test/uri/test_generic.rb (TestGeneric::test_route): added a test.
-
-Mon Dec 22 20:38:44 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi.rb: reduce eval.
-
-	* lib/cgi.rb (CGI::QueryExtension::read_multipart): alias path to
-	  local_path.  [ruby-list:38883]
-
-Mon Dec 22 20:09:31 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/test_property.rb: remove duplicated test method.
-
-Mon Dec 22 18:22:04 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub (config.h): remove
-	  HAVE_ISINF definition to follow previous commits of missing.h
-	  and win32/win32.h.
-
-Mon Dec 22 17:23:42 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_cv_func_setitimer): moved from defines.h
-
-	* defines.h, rubysig.h, signal.c: removed macro handling which
-	  should be done in configure.
-
-	* configure.in (intrinsics.h): check if present.
-
-	* ruby.h: include intrinsics.h if available.
-
-	* bignum.c, marshal.c: include ieeefp.h if available.
-
-	* missing.h (isinf): define as a macro if finite() and isnan()
-	  are available.  [ruby-core:02032]
-
-Mon Dec 22 17:07:31 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (mingw): set isnan, finite and isinf to yes.
-
-Mon Dec 22 13:40:19 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/property.rb: passing block by reference.
-
-Mon Dec 22 00:32:43 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_with_disable_interrupt): use ENABLE_INTS instead of
-	  ALLOW_INTS which may switch context.  [ruby-dev:22319]
-
-	* ext/syck/emitter.c (syck_emitter_write): str bigger than
-	  e->bufsize causes buffer overflow.  [ruby-dev:22307]
-
-Sun Dec 21 17:29:00 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_check_inheritable): new function.  [ruby-dev:22316]
-
-	* intern.h: add prototype.
-
-	* eval.c (superclass): use rb_check_inheritable().
-
-	* object.c (rb_class_initialize): check argument validity.
-
-Sun Dec 21 16:25:10 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#+): re-implemented to resolve ".." in
-	  beginning of the argument.
-	  (Pathname#join): concatenate from the last argument.
-	  (Pathname#parent): just use Pathname#+.
-
-Sun Dec 21 00:12:37 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add new methods (TkScrollbar#assign, assign_list)
-
-	* ext/tk/sample/tkmultilistframe.rb: use TkScrollbar#assign method
-
-Sat Dec 20 21:59:03 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb (HTTPRequest#meta_vars): refine regexp.
-
-	* lib/webrick/cgi.rb (CGI#start): NPH scripts return status line
-	  instead of Status: header field.
-
-	* lib/webrick/cgi.rb (CGI::Socket): refine some coditions.
-
-Sat Dec 20 16:07:14 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Completion::complete): wrong
-	  Regexp for word boundary.  pointed out by Gavin Sinclair.
-
-	* lib/optparse.rb (OptionParser::make_switch): [no-] prefix was
-	  missing.
-
-Sat Dec 20 11:40:10 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/yaml.rb (YAML::YAML): adjust Marshal version.
-
-Sat Dec 20 03:56:02 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_with_disable_interrupt): prohibit thread context
-	  switch during proc execution.  [ruby-dev:21899]
-
-Sat Dec 20 02:41:02 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb: add file. (yet another CGI library)
-
-	* MANIFEST: add lib/webrick/cgi.rb.
-
-Sat Dec 20 02:18:31 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-calculate-indent): proper indentation
-	  inside of parentheses.  [ruby-dev:22308]
-
-Fri Dec 19 21:24:22 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb (HTTPRequest#meta_vars): should not set
-	  HTTP_CONTENT_TYPE and HTTP_CONTENT_LENGTH.
-
-	* lib/webrick/https.rb (HTTPRequest#parse): should check presence
-	  of cert() method to detect SSLSocket.
-
-Fri Dec 19 22:56:46 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/property.rb (SOAP::Property#load): new method for loading
-	  property value into existing property tree.
-
-	* test/soap/test_property.rb: add test.
-
-Fri Dec 19 19:21:49 2003  akira yamada  <akira@ruby-lang.org>
-
-	* lib/runit/cui/testrunner.rb (RUNIT::CUI::TestRunner::run):
-	  should use Test::Unit::UI::{PROGRESS_ONLY,VERBOSE}.
-
-Fri Dec 19 17:36:49 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tkmultilistbox.rb: bug fix
-
-	* ext/tk/sample/tkmultilistframe.rb: new sample script
-
-Fri Dec 19 03:44:27 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (parse_form_data): should return an
-	  empty Hash if the body is empty.
-
-Thu Dec 18 21:47:35 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): should remove deffile if it's
-	  made by miniruby. based on nobu's patch.
-
-Thu Dec 18 21:44:21 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (stack_extend): ignore inline optimization on VC7.
-
-	* win32/Makefile.sub (OS, RT): can override.
-
-	* win32/Makefile.sub (LDFLAGS): ditto. shouldn't use pdb:none
-	  option. based on Tietew's patch [ruby-dev:22289]
-
-Thu Dec 18 16:38:44 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (fnmatch): unlike find_dirsep(), rb_path_next() never
-	  return NULL.
-
-Thu Dec 18 15:27:59 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/ipaddr.rb (IPSocket::getaddress): merge usa's patch.
-	  [ruby-dev:21678]
-
-Wed Dec 17 15:15:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::Value::[]): should work like
-	  String#[] if more than one arguments are specified.
-
-	* lib/delegate.rb: avoid using common instance name as "@obj".
-
-	* lib/cgi.rb (CGI::QueryExtension::Value): Value is no longer
-	  subclass of String, but DelegateClass(String).
-
-	* ext/curses/extconf.rb: restore function check for init_color.
-	  [ruby-list:38905]
-
-	* Makefile.in: need to specify $(MAINLIBS) for the miniruby
-	  generation rule.
-
-	* configure.in: better FreeBSD -lc_r support.
-
-Wed Dec 17 00:16:14 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: new method
-	  StringScanner#beginning_of_line? (alias #bol?)
-
-	* ext/strscan/strscan.c: new method StringScanner#concat and #<<.
-
-	* ext/strscan/strscan.c: StringScanner#new(str) does not duplicate
-	  nor freeze STR (allow destructive modification).
-
-	* test/strscan/test_stringscanner.rb: test new methods above.
-
-	* test/strscan/test_stringscanner.rb: test destructive string
-	  modification.
-
-Tue Dec 16 21:20:47 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb: don't use local variable `pp'.
-
-	* lib/prettyprint.rb: ditto.
-
-Tue Dec 16 13:20:43 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: condition bug of if statement on
-	  {pack,grid}_propagate methods
-
-Tue Dec 16 03:17:29 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: comments in strings. [ruby-talk:88012]
-
-	* test/yaml/test_yaml.rb: add test.
-
-Tue Dec 16 01:14:44 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (catch_timer): check rb_thread_crtical in main native
-	  thread.
-
-	* eval.c (thread_timer): just sends signals periodically, to
-	  prevent main native thread from receiving them in critical
-	  section.  [ruby-core:01959]
-
-Mon Dec 15 13:32:22 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (check_dirname): check string safety and remove extraneous
-	  trailing directory separators.  [ruby-dev:22279]
-
-	* file.c: renamed and externalized rb_path_next,
-	  rb_path_skip_prefix, rb_path_last_separator, rb_path_end.
-
-	* intern.h: prototypes for rb_path_next, rb_path_skip_prefix,
-	  rb_path_last_separator, rb_path_end.
-
-Mon Dec 15 09:27:46 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_pkcs12.c (ossl_pkcs12_initialize): first argument
-	  of rb_protect should take an argument of VALUE.
-
-Sun Dec 14 18:46:48 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/socket.c (Init_socket): IPv6 is not supported although
-	  AF_INET6 is defined on MinGW.
-
-	* lib/ipaddr.rb (AF_INET6): workaround in the environment which does
-	  not support IPv6.
-
-Sat Dec 13 18:55:16 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/charset_alias.rb: preserve original order.
-
-	* ext/iconv/extconf.rb: remove wrapper file at clean.
-
-Sat Dec 13 18:09:42 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (thread_timer): use timer by sub-thread and nanosleep.
-	  [ruby-talk:87519]
-
-	* gc.c (Init_stack): no stack adjustment for THREAD_SAFE.
-
-Sat Dec 13 17:17:59 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (proc_alloc): cache the created object at first time.
-	  [ruby-talk:61288], [ruby-dev:22240]
-
-Sat Dec 13 09:01:23 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check ucontext.h.
-
-	* eval.c: use getcontext/setcontext() instead of setjmp/longjmp()
-	  on ia64 or with native thread enabled.  [ruby-core:01932]
-
-Sat Dec 13 03:09:14 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: anonymous struct fix. [ruby-core:01946]
-
-	* test/yaml/test_yaml.rb: add test.
-
-Fri Dec 12 22:36:44 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb: add Cell#to_str and Cell#to_s for /.../ =~ aCell,
-	  "#{aCell}" and so on.
-
-	* test/csv/test_csv.rb: add tests.
-
-Fri Dec 12 19:33:06 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mkdir): remove trailing `/' from pathes.
-
-	* lib/fileutils.rb (rmdir): ditto. [ruby-dev:22238]
-
-	* lib/fileutils.rb (rmdir_r): ditto.
-
-	* lib/fileutils.rb (fu_copy_dir): check if it is a directory after
-	  mkdir(2).
-
-Fri Dec 12 06:06:09 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (proc_invoke): fix class name in warning message for
-	  define_method.  [ruby-dev:22235]
-
-Thu Dec 11 21:24:43 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_pkcs12.[ch]: new files. add OpenSSL::PKCS12.
-
-	* ext/openssl/ossl.[ch]: ditto.
-
-	* ext/openssl/MANIFEST: add ossl_pkcs12.[ch].
-
-Thu Dec 11 20:54:28 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mkdir_p): remove trailing `/' befere mkdir(2).
-	  mkdir("nonexistdir/") does not work on NetBSD/Alpha 1.6.1.
-
-	* lib/fileutils.rb (fu_list): call to_str for all arguments.
-
-Thu Dec 11 20:07:01 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/ftools.rb (makedirs): sync with fileutils.
-
-Thu Dec 11 19:53:03 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mkdir_p): catch all SystemCallErrors.
-	  (mkdir("C:\") causes EACCESS on Windows 2000/NTFS)
-
-Thu Dec 11 19:08:02 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (mkdir_p): check if it is a directory after
-	  mkdir(2) instead of before mkdir(2), to avoid race condition.
-	  [ruby-talk:87730]
-	  Refer: mkinstalldirs sh script, GNU mkdir(1) (coreutils 5.0)
-
-Thu Dec 11 18:49:30 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: def m( arg ) -> def m(arg).
-
-Thu Dec 11 11:39:43 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ieeefp.h), numeric.c: needed for finite() on
-	  Solaris.  [ruby-core:01921]
-
-	* file.c (rb_stat_inspect): adjust format specifier.
-
-	* parse.c (arg_prepend): nodetype() is for debug use.
-
-	* ruby.h (ISASCII, etc): cast to int to get rid of warning.
-
-	* ruby.h (alloca.h): include even in GCC.  [ruby-core:01925]
-
-	* ext/bigdecimal/bigdecimal.c (GetVpValue): adjust format
-	  specifier.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_prec, BigDecimal_coerce,
-	  BigDecimal_divmod): use rb_assoc_new() to suppress memory usage.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_split): ditto.
-
-	* ext/dl/sym.c (rb_dlsym_guardcall): guard itself should be
-	  volatile.
-
-	* ext/iconv/iconv.c (iconv_convert): ensure actual parameter with
-	  format specifier.
-
-	* ext/pty/pty.c (MasterDevice, SlaveDevice, deviceNo): do not
-	  define unless used.
-
-	* ext/pty/pty.c (getDevice): get rid of warning.
-
-	* ext/socket/socket.c (port_str, sock_s_getaddrinfo,
-	  sock_s_getnameinfo): FIX2INT() now returns long.
-
-	* ext/socket/socket.c (init_inetsock_internal): uninitialized
-	  variable.
-
-	* ext/syck/rubyext.c (syck_parser_assign_io): add prototype.
-
-	* ext/syck/rubyext.c (rb_syck_mktime, yaml_org_handler): use
-	  ISDIGIT() instead of isdigit() to avoid warnings and for
-	  platforms which don't support non-ascii charater.
-
-Wed Dec 10 19:28:56 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): set EOF flag at short read.
-	  [ruby-dev:22223], [ruby-dev:22224]
-
-Wed Dec 10 18:07:25 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/erb.rb: new method ERB#filename(=). [ruby-dev:22208]
-
-Wed Dec 10 17:54:51 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): do not set EOF flag when
-	  requested length is zero.  [ruby-dev:22214]
-
-Wed Dec 10 17:17:18 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): should return given string even if data read is
-	  empty.  [ruby-dev:22207]
-
-Wed Dec 10 17:16:06 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): adjust behavior at reading
-	  beyond EOF to IO.  [ruby-dev:22205]
-
-	* test/ruby/ut_eof.rb (TestEOF::Seek): test behaviors at reading
-	  beyond EOF.
-
-	* test/ruby/test_file.rb, test/stringio/test_stringio.rb: include
-	  TestEOF::Seek test case.
-
-Wed Dec 10 15:01:19 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/monitor/test_monitor.rb (test_cond): use Queue#deq
-	  instead of sleep.
-
-Wed Dec 10 14:45:39 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/pty/pty.c (HAVE_SYS_IOCTL_H): need to include <sys/ioctl.h>
-	  for TIOCSCTTY on *BSD.  based on gotoyuzo's patch.
-	  (ruby-bugs:PR#1211)
-
-	* ext/pty/pty.c (establishShell): should close descriptors if fork
-	  failed.
-
-Wed Dec 10 12:53:05 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.h: define execv() using do_aspawn().
-
-	* process.c (proc_exec_v): remove #ifdef's which stopped needing.
-
-Tue Dec  9 23:32:23 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tkcanvas.rb, ext/tk/lib/tkdialog.rb,
-	  ext/tk/lib/tkentry.rb, ext/tk/lib/tkscrollbox.rb, ext/tk/lib/tktext.rb,
-	  ext/tk/sample/tkalignbox.rb, ext/tk/sample/tkcombobox.rb,
-	  ext/tk/sample/tkmultilistbox.rb, ext/tk/sample/tkoptdb.rb, ext/tk/sample/tktextframe.rb,
-	  ext/tk/sample/demos-en/dialog1.rb, ext/tk/sample/demos-en/dialog2.rb,
-	  ext/tk/sample/demos-jp/dialog1.rb, ext/tk/sample/demos-jp/dialog2.rb:
-	  overrided instance methods, which are private methods on the super
-	  class, are changed to 'private'
-
-Tue Dec  9 19:53:02 2003  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic#route_from0): make case insensitive
-	  for host-part.
-
-	* test/uri/test_generic.rb (test_route): added tests for the above
-	  change.
-
-Tue Dec  9 14:10:48 2003  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (rb_io_check_readable): don't call io_seek if EOF flag is set,
-	  to avoid clearing EOF flag.
-	  (rb_io_check_writable): ditto.
-
-Tue Dec  9 02:53:55 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tkalignbox.rb: new sample script
-
-Tue Dec  9 00:45:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: renamed #assert_raises to #assert_raise
-	  and made the former call the latter. [ruby-core:01890]
-
-	* test/testunit/test_assertions.rb: ditto.
-
-Tue Dec  9 00:07:35 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/rpc/standaloneServer.rb: add 'shutdown' and 'status'
-	  methods as delegates to WEBrick.
-
-	* test/soap/calc/{test_calc.rb,test_calc2.rb},
-	  test/soap/helloworld/test_helloworld.rb,
-	  test/wsdl/datetime/test_datetime.rb, test/wsdl/raa/test_raa.rb:
-	  follow the change.
-
-Mon Dec  8 22:48:03 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/autorunner.rb: remove dependency to a particular
-	  runner.  [ruby-core:01901], [ruby-list:38869]
-
-	* lib/test/unit/ui/testrunnerutilities.rb: moved output level
-	  constants from Console.
-
-	* lib/test/unit/ui/console/testrunner.rb: ditto.
-
-	* lib/test/unit/ui/{fox,gtk,gtk2,tk}/testrunner.rb (initialize):
-	  accept output_level.
-
-Mon Dec  8 15:03:30 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/syck.c (syck_io_str_read): get rid of buffer overflow.
-
-Mon Dec  8 13:02:11 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/uri/common.rb: new method URI.regexp. [ruby-dev:22121]
-
-	* test/uri/test_common.rb: add test for URI.regexp.
-
-Mon Dec  8 12:44:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c: define swap16 and swap32 only if they are not
-	  defined. OpenBSD defines these macros. [ruby-dev:22181]
-
-Sun Dec  7 20:54:17 2003  Tanaka Akira  <akr@m17n.org>
-
-	* ext/iconv/iconv.c (map_charset): make case sensitive.
-	  ext/iconv/charset_alias.rb (charset_alias): don't ignore
-	  config.charset's information.  sort aliases.
-
-Sat Dec  6 22:58:03 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_start_ssl): new function to wrap
-	  SSL_connect and SSL_accept; if SSL_connect (or SSL_accept) returned
-	  but not finished the handshake process, we should retry it.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_connect): call ossl_start_ssl.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_accept): ditto.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read): allow signal traps.
-
-Sat Dec  6 21:45:10 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (flush_before_seek): flush before seek on any platform.
-
-	* configure.in: ditto.
-
-Sat Dec  6 17:23:00 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/soap.rb(SOAP::Env.getenv): allow upcase environment variable
-	  as well as downcase one.
-
-	* lib/soap/netHttpClient.rb(SOAP::NetHttpClient#proxy=): check URI.
-
-Fri Dec  5 23:22:30 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions::assert_raises,
-	  Test::Unit::Assertions::assert_nothing_raised): use the last
-	  argument as message unless class object.
-
-	* test/testunit/test_assertions.rb (test_assert_raises): test for
-	  multiple exception list.  [ruby-core:01891]
-
-	* test/testunit/test_assertions.rb (test_assert_nothing_raised): test
-	  for non-exception classes.
-
-Fri Dec  5 22:23:04 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/netHttpClient.rb: proxy support did not work.  fixed.
-
-	* lib/soap/property.rb: add class methods for loading property from
-	  stream/file/propertyfile.  propertyfile is a file which is located at
-	  somedir in $:.
-
-	* lib/soap/soap.rb, lib/soap/wsdlDriver.rb, lib/soap/rpc/driver.rb,
-	  lib/wsdl/importer.rb: load property from propertyfile 'soap/property'
-	  e.g. /usr/local/lib/ruby/site_ruby/1.8/soap/property.
-
-	* test/soap/test_property.rb, test/soap/test_streamhandler.rb: new file.
-
-Fri Dec  5 17:26:23 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_exec_end_proc): maintain tmp_end_procs.
-	  [ruby-dev:22154]
-
-Fri Dec  5 13:36:59 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_exec_end_proc): should not clear end_procs and
-	  ephemeral_end_procs before execution. [ruby-dev:22144]
-
-	* eval.c (rb_obj_extend): call Module#extended hook after
-	  extended_object.  [ruby-list:38866]
-
-	* object.c (Init_Object): Module#extended defined.
-
-Fri Dec  5 13:17:30 2003  Tanaka Akira  <akr@m17n.org>
-
-	* test/ruby/test_pipe.rb: use IO.pipe instead of IO.popen.
-
-Fri Dec  5 11:54:45 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): follow IO#read.
-
-	* test/ruby/ut_eof.rb, test/ruby/test_file.rb, test/ruby/test_pipe.rb,
-	  test/stringio/test_stringio.rb: add EOF test.
-
-Fri Dec  5 02:49:35 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions::assert_raises):
-	  allow multiple exception list.  [ruby-core:01884]
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions::assert_nothing_raised):
-	  check whether arguments are subclass of Exception.
-
-Thu Dec  4 23:54:00 2003  Rick Ohnemus  <rick.ohnemus@systemware.com>
-
-	* dln.c (aix_loaderror): should not use member named 'errno' which
-	  might be a macro (e.g. on AIX).
-
-Thu Dec  4 23:32:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): do not depend on lseek position.
-	  [ruby-dev:22026]
-
-Thu Dec  4 22:37:26 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): preserve $! value when retry happens in the
-	  rescue clause.  [ruby-talk:86697]
-
-Thu Dec  4 21:50:07 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/drb/drb.rb (DRb::DRbMessage::send_request, send_reply):
-	  should rescue errors and re-raise DRbConnError on write too.
-	  [ruby-dev:22132]
-
-Thu Dec  4 16:41:17 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (exc_list): allow expanding list.  [ruby-dev:22134]
-
-Thu Dec  4 14:09:24 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb (test_cp): test if the error is
-	  kind of SystemCallError.  It is needless details that which errno
-	  is set on each systems.
-
-Thu Dec  4 13:24:13 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb: use Object#__send__ instead of Object#send.
-
-Thu Dec  4 13:17:45 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/streamHandler.rb: support latest released version of
-	  http-access2.
-
-Thu Dec  4 13:04:44 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/soap.rb: add SOAP::Env module for environment repository
-	  such as HTTP_PROXY.
-
-	* lib/soap/property.rb: property implementation.
-
-	* lib/soap/streamHandler.rb, lib/soap/wsdlDriver.rb,
-	  lib/soap/rpc/driver.rb: use soap/property.rb.
-
-	* lib/wsdl/importer.rb, lib/soap/wsdlDriver.rb, lib/soap/rpc/driver.rb:
-	  use SOAP::Env.
-
-	* lib/soap/netHttpClient.rb: add basic_auth, ssl_config, and cookie
-	  management interface, but ignored for now.
-
-	* lib/xsd/charset.rb: add XSD::Charset.encoding= interface to set
-	  wiredump charset explicitly.  it was fixed to 'utf-8' when iconv or
-	  uconv module was found.
-
-Thu Dec  4 10:43:58 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/sym.c (rb_dlsym_guardcall): __declspec(noinline) is VC7
-	  feature.
-
-Thu Dec  4 10:27:12 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: update hyperlink to the Japanese document.
-
-Thu Dec  4 09:12:43 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (asn1time_to_time): should check that
-	  the underlying value of ASN1_TIME isn't NULL. [ruby-core:01881]
-
-Thu Dec  4 08:29:43 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (GenericServer#start): should rescue
-	  Exception to avoid unexpected aborting. [ruby-core:01853]
-
-	* lib/webrick/server.rb (GenericServer#start_thread): should check
-	  that peeraddr isn't nil before printing.
-
-	* lib/webrick/httpresponse.rb (HTTPResponse#start_thread): should
-	  rescue Exception to avoid unexpected aborting of thread.
-
-Thu Dec  4 03:48:59 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#link, Pathname#symlink): obsoleted.
-	  (Pathname#make_link, Pathname#make_symlink): new method.
-
-Thu Dec  4 01:45:24 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_read): should not terminate on empty string; wait
-	  until real EOF.  [ruby-dev:21969]
-
-	* io.c (argf_read): should adjust length to read, when length is
-	  specified and read spans command line argument files.
-
-Wed Dec  3 19:38:36 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: correct fcntl parameter. [ruby-dev:22120]
-
-Wed Dec  3 13:49:07 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: 'format'==>'Kernel.format' (avoid override trouble)
-
-	* ext/tk/lib/tkafter.rb: ditto.
-
-	* ext/tk/lib/tkcanvas.rb: ditto.
-
-	* ext/tk/lib/tkdialog.rb: ditto.
-
-	* ext/tk/lib/tktext.rb: ditto.
-
-Wed Dec  3 13:28:13 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (lex.c): try gperf first, and copy from the source
-	  directory if failed.  [ruby-dev:22123]
-
-	* ext/extmk.rb (MTIMES): let makefiles depend to mkmf.rb.
-
-	* lib/mkmf.rb (configuration): DLDFLAGS was duplicated.
-
-Tue Dec  2 23:18:12 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: wrote the warning about HTTP_PROXY environment
-	  variable.
-
-Tue Dec  2 21:31:42 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bin/testrb: new test runner.  [ruby-core:01845]
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner.run,
-	  Test::Unit::AutoRunner#process_args): take test list to run and
-	  options.
-
-	* lib/test/unit/autorunner.rb (Test::Unit::AutoRunner::RUNNERS,
-	  Test::Unit::AutoRunner#run): should not exit inside a library,
-	  just return the result instead.
-
-	* lib/test/unit.rb: ditto.
-
-	* test/runner.rb: exit with the test result.
-
-Tue Dec  2 20:18:48 2003  Eric Sunshine  <sunshine@sunshineco.com>
-
-	* configure.in (AC_PROG_YACC): AC_DEFINE(OLD_YACC) if Yacc is found
-	  instead of Bison or byacc.
-
-	* parse.y: If OLD_YACC is defined, ensure that YYMAXDEPTH is at least
-	  10000 (Bison's default) since some old versions of Yacc define it as
-	  low as 150 by default, which is too low for Ruby to parse some files,
-	  such as date/format.rb.  Among other issues, the parse problem causes
-	  "make test" to fail.
-
-Tue Dec  2 20:03:20 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb: check if Pathnames are usable
-	  for arguments.
-
-Tue Dec  2 04:22:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: fixed #assert_no_match message.
-
-	* test/testunit/test_assertions.rb: ditto.
-
-Tue Dec  2 00:43:00 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/syck.c: string buffering bug.  decrementing by full
-	  max_size now. [ruby-core:01834]
-
-Mon Dec  1 21:33:08 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_sadded): prohibit singleton method definition for
-	  Numerics.  fill yet another gap between Fixnum and Bignum.
-
-Mon Dec  1 17:33:47 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (htov16): converts endian using swap16. htov32(), hton16,
-	  hton32 as well. [ruby-talk:85377]
-
-	* pack.c (swap16): swap 2 bytes no matter how big short is on the
-	  platform.  swap32() is also prepared.
-
-	* numeric.c (rb_num2int): returns long to preserve information.
-	  rb_fix2int(), rb_num2uint(), rb_fix2uint() as well.
-	  [ruby-talk:85377]
-
-	* numeric.c (rb_num2uint): should not check for value range if the
-	  source value is negative.
-
-Mon Dec  1 17:14:34 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sample/optparse/opttest.rb: added.
-
-Mon Dec  1 16:10:52 2003  Dave Thomas  <dave@pragprog.com>
-
-	* lib/rdoc/rdoc.rb: (etc) initial merge into main tree.
-
-Mon Dec  1 14:17:49 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_each_src_dest0): call #to_str to allow
-	  Pathname for arguments. [ruby-core:01795]
-
-	* test/fileutils/test_fileutils.rb: does much strict test on
-	  "same" files detecting.
-
-Mon Dec  1 09:28:14 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub
-	  (XCFLAGS): re-export $(XCFLAGS).
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub
-	  (ARCH_FLAG): export $(ARCH_FLAG) (perhaps empty value).
-
-Mon Dec  1 01:03:27 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (TRY_LINK, link_command): added support for DLDFLAGS
-	  and ARCH_FLAG.  [ruby-dev:22085]
-
-Sun Nov 30 20:18:07 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: keep ARCH_FLAG separate. export ARCH_FLAG.
-	  [ruby-core:01819]
-
-	* Makefile.in: add ARCH_FLAG to CFLAGS.
-
-	* Makefile.in: add @CPPFLAGS@ to CPPFLAGS.
-
-	* lib/mkmf.rb (link_command, cc_command): use ARCH_FLAG.
-
-	* lib/mkmf.rb (configuration): add ARCH_FLAG to DLDFLAGS.
-
-	* Makefile.in: add ARCH_FLAG to DLDFLAGS.
-
-	* configure.in: should put getcwd in AC_CHECK_FUNCS, not
-	  AC_REPLACE_FUNCS.  [ruby-core:01826]
-
-Sun Nov 30 18:22:48 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: do not override CCDLDFLAGS, LDFLAGS, XLDFLAGS,
-	  DLDFLAGS and LDSHARED.
-
-	* configure.in: XCFLAGS for compiling ruby itself.  ARCH_FLAG is
-	  reflected in CFLAGS.
-
-	* lib/mkmf.rb: ditto.  do not import XCFLAGS from config.status.
-
-Sun Nov 30 17:37:36 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix [ruby-talk:86746]
-
-Sun Nov 30 13:02:00 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/encodingstyle/soapHandler.rb: refactoring - Simplifying
-	  Conditional Expressions.
-
-	* lib/wsdl/soap/definitions.rb: refactoring - Move Method.
-
-	* test/xsd/{test_noencoding.rb,noencoding.xml}: new files.  test for
-	  encoding unspecified XML file parsing.
-
-	* test/wsdl/{test_fault.rb,map,datetime}: new files.  test of
-	  SOAPFault, dateTime and Apache's Map.
-
-Sun Nov 30 09:35:14 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_update): get rid of SEGV at just allocated String.
-	  [ruby-core:01812]
-
-Fri Nov 28 23:19:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_mark): explicitly check mark recursion levels, instead
-	  of unreliable stack length.
-
-Fri Nov 28 22:49:56 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/rinda.rb: fix TupleSpaceProxy#read, read_all.
-
-Fri Nov 28 21:44:40 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* test/fileutils/test_fileutils.rb (test_ln_s): should be a file, not
-	  a directory for FreeBSD.
-
-Fri Nov 28 19:37:56 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (env_has_value, env_index): must match exactly.
-
-	* test/ruby/test_env.rb (test_has_value, test_index): condition for
-	  aboves.
-
-Fri Nov 28 17:59:20 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_env.rb: add tests for ENV.
-
-Fri Nov 28 17:47:46 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (DRbMessage#load): rescue Errno::* and raise
-	  DRbConnError.
-
-Fri Nov 28 15:41:15 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#realpath): obsolete the force_absolute
-	  argument.
-
-Fri Nov 28 14:41:52 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/streamHandler.rb: drop unused http parameters.
-
-	* lib/soap/encodingstyle/soapHandler.rb, lib/soap/mapping/factory.rb,
-	  lib/soap/mapping/mapping.rb, lib/soap/mapping/registry.rb,
-	  lib/wsdl/soap/complexType.rb: ApacheSOAP's map support was broken
-	  under WSDL dynanic client environment.  fixed.
-
-	* test/wsdl/raa/*: add tests.
-
-	* lib/xsd/datatypes.rb: dateTime precision bug fix (at least, I hope.)
-	  bug of soap4r.  XSDDateTimeImple.to_time passed a Float to
-	  Time.local/Time.gm as an usec, and NUM2LONG(rb_num2long for Float)
-	  causes rounding error.
-
-	* test/soap/test_basetype.rb, test/xsd/test_xsd.rb: add tests.
-
-Fri Nov 28 04:15:24 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (method_arity): used wrong Proc object.  [ruby-talk:86504]
-
-Fri Nov 28 00:47:29 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_f_exit), process.c (rb_f_exit_bang): treat true as
-	  success, false as failure.  [ruby-dev:22067]
-
-	* eval.c (rb_f_abort, rb_thread_switch), process.c (rb_f_system): use
-	  ANSI macro instead of hard coded value.
-
-	* eval.c (rb_f_exit), process.c (rb_f_exit_bang): use VALUEs not but
-	  TYPEs.
-
-Thu Nov 27 22:05:48 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* eval.c, gc.c: FreeBSD/ia64 currently does not have a way for a
-	  process to get the base address for the RSE backing store, so
-	  hardcode it for the moment.
-	  [submitted by: Marcel Moolenaar <marcel@FreeBSD.org>]
-
-Thu Nov 27 17:36:42 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkafter.rb: bug fix on TkTimer#cancel_on_exception=(mode).
-	  TkTimer#wait recieves the exception of the callback.
-	  The exception is kept on @return_value.
-
-Thu Nov 27 16:58:48 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_stat): remove _fullpath() for NUL: device.
-
-Wed Nov 26 15:38:47 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* test/fileutils/test_fileutils.rb (test_ln_s): should take the
-	  existing symbolic link for OpenBSD.
-
-Wed Nov 26 04:48:42 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/token.c: removed YYTOKTMP references which
-	  were causing buffer overflows on large block scalars,
-	  comments, quoted scalars and plain scalars.
-
-	* ext/syck/rubyext.c: dynamic changing of buffer size.
-
-	* ext/syck/syck.h: default buffer size of 4k.
-
-Wed Nov 26 00:55:30 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpresponse.rb: add HTTPResponse#keep_alive=.
-
-	* lib/webrick/httpserver.rb (HTTPServer#run): should pass the
-	  request's keep_alive flag to the response.
-
-Tue Nov 25 21:41:35 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* defines.h (ENV_IGNORECASE): should define when DOSISH without
-	  human68k. [ruby-dev:22047]
-
-	* hash.c (env_has_value, env_index): don't ignore case of value.
-	  [ruby-dev:22048]
-
-Tue Nov 25 21:39:37 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (path_check_1): honor sticky bits always.
-	  [ruby-talk:86273]
-
-Tue Nov 25 20:02:14 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb: do test in more deep
-	  directory.
-
-	* test/fileutils/test_nowrite.rb: ditto.
-
-Tue Nov 25 19:04:23 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::Generic#find_proxy): ENV case sensitivity test
-	  refined.
-
-Tue Nov 25 18:13:30 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb: chdir Dir.tmpdir before each
-	  test. [ruby-dev:22045]
-
-	* test/fileutils/test_nowrite.rb: ditto.
-
-Tue Nov 25 17:52:11 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::Generic#find_proxy): use http_proxy under CGI
-	  if the environment variable is case sensitive.
-
-Tue Nov 25 16:41:33 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/wsdl/multiplefault.wsdl, test/wsdl/test_multiplefault.rb:
-	  removed.  this test requires extra libraries in soap4r/1.5.*.
-
-Tue Nov 25 16:24:42 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/**/*.rb, lib/wsdl/**/*.rb, lib/xsd/**/*.rb: changed license;
-	  GPL2 -> Ruby's.
-
-	* lib/soap/rpc/driver.rb, lib/soap/wsdlDriver.rb,
-	  lib/soap/streamHandler.rb: add interface to streamhandler.
-
-	* lib/soap/marshal.rb: raise error if parse fails.
-
-	* lib/soap/netHttpClient.rb: add https support.  Patched by
-	  Oliver M. Bolzer.
-
-	* lib/soap/netHttpClient.rb: dump HTTP response message body by itself.
-
-	* lib/soap/rpc/driver.rb, lib/soap/rpc/proxy.rb,
-	  lib/soap/wsdlDriver.rb: add driver#mandatorycharset interface to foce
-	  using charset for parsing response from buggy server.
-
-	* lib/soap/encodingstyle/soapHandler.rb: support Apache Axis's half
-	  typed multi-ref array.
-
-	* lib/soap/mapping/factory.rb, lib/soap/mapping/registry.rb: map
-	  SOAPStruct which has multi-accessors which name are the same, to an
-	  array.
-
-	* lib/soap/rpc/element.rb: fixed illegal parameter order.
-
-	* lib/soap/rpc/element.rb: element name of response message could have
-	  the name other than 'return'.
-
-	* lib/wsdl/operation.rb, lib/wsdl/operationBinding.rb,
-	  lib/wsdl/soap/classDefCreator.rb, lib/wsdl/soap/methodDefCreator.rb,
-	  lib/wsdl/soap/methodDefCreatorSupport.rb: WSDL/1.1 allows plural
-	  fault definition in a operation. [ruby-talk:84948]
-
-	* test/wsdl/multiplefault.wsdl, test/wsdl/test_multiplefault.rb: add
-	  test for above fix.
-
-	* lib/wsdl/soap/complexType.rb: support WSDL array definition with
-	  maxOccures="unbound".
-
-	* lib/xsd/charset.rb: use cp932 under emx.  Patched by
-	  Siena. / SHINAGAWA, Norihide in [ruby-dev:21972]
-
-	* lib/xsd/xmlparser/parser.rb: set @charset nil by default.  Nil means
-	  'follow encoding declaration in XML'.
-
-	* sample/soap/digraph.rb, sample/wsdl/amazon/wsdlDriver.rb,
-	  sample/wsdl/googleSearch/sampleClient.rb,
-	  sample/wsdl/googleSearch/wsdlDriver.rb,
-	  test/wsdl/test_emptycomplextype.rb,
-	  test/wsdl/marshal/test_wsdlmarshal.rb,
-	  test/xsd/test_xmlschemaparser.rb: use File.open(...) { |f| f.read }
-	  instead of File.open(...).read. [ruby-dev:21964]
-
-	* test/wsdl/emptycomplextype.wsdl, test/wsdl/test_emptycomplextype.rb:
-	  simplify the test case.
-
-	* test/wsdl/axisArray/*: add tests for axis's array encoding.
-
-Tue Nov 25 16:15:29 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ruby.h: don't treat Cygwin as Windows.
-
-Tue Nov 25 15:18:28 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* configure.in: change default value of --enable-pthread (default: no)
-
-Tue Nov 25 07:31:16 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (primary): allow newlines just before right argument
-	  parenthesis.  (ruby-bugs:PR#1221)
-
-Mon Nov 24 23:32:06 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI.open_loop, URI::HTTP#proxy_open): use
-	  catch/throw for redirection instead of exception.
-	  (OpenURI.open_loop, OpenURI.redirectable?): restrict redirection.
-
-Mon Nov 24 19:59:48 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (URI::Generic#find_proxy): use CGI_HTTP_PROXY
-	  instead of HTTP_PROXY in the CGI environment.
-
-Mon Nov 24 19:32:55 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/etc/extconf.rb: check for pw_passwd in struct passwd and
-	  gr_passwd in struct group for DJGPP.
-
-	* ext/etc/etc.c: ditto.
-
-	* ext/Setup.dj: support for curses, etc, zlib.
-
-Mon Nov 24 17:00:00 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: validate option names.
-	  :content_length_proc and :progress_proc option implemented.
-
-Mon Nov 24 14:53:10 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub
-	  (XCFLAGS): output empty value instead of `-DRUBY_EXPORT'.
-
-Sat Nov 22 23:09:45 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: set enable_pthread to no on MinGW.
-
-Sat Nov 22 22:56:20 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* configure.in: add --enable-pthread option (default: yes)
-
-Sat Nov 22 22:48:46 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add Tk.grab_release and fix bug of TkComposite
-
-	* ext/tk/lib/tkafter.rb: bug fix of TkAfter#start
-
-	* ext/tk/sample/tkcombobox.rb: new sample script
-
-	* ext/tcltklib/tcltklib.c: add native thread check
-
-Sat Nov 22 18:49:47 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/curses/curses.c (window_nodelay): nodelay() of NetBSD's
-	  libcruses returns no value, just like keypad().
-
-Sat Nov 22 17:36:36 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub
-	  (HAVE_GETCWD): output to config.h.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub
-	  (XCFLAGS): output to config.status.
-
-Sat Nov 22 13:10:10 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (have_st_ino?): djgpp has valid st_ino.
-
-Sat Nov 22 11:28:48 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (Init_stack): stack region is far smaller than usual if
-	  pthread is used.
-
-Sat Nov 22 07:30:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/util/backtracefilter.rb: fixed a bug that occurred
-	  when an exception had no backtrace.
-
-	* test/testunit/util/test_backtracefilter.rb: ditto.
-
-Fri Nov 21 16:44:18 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkentry.rb: fix the encoding trouble of percent
-	  substitutions on validatecommand option of TkEntry widget
-
-	* ext/tk/lib/tk.rb: fix bug on {pack|grid}_propagate() method
-
-Fri Nov 21 16:12:11 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ruby.1: Fix markups and grammar.
-
-Fri Nov 21 14:49:42 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* ruby.1: wrote about ruby related environment variables.
-
-Fri Nov 21 12:28:03 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_extended): singleton methods should not be checked
-	  when dumping via marshal_dump() or _dump(). [ruby-talk:85909]
-
-Fri Nov 21 01:40:00 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* configure.in: check <pthread.h>
-
-	* ruby.h: include pthread.h if existence.
-	  define is_ruby_native() macro when not HAVE_NATIVETHREAD
-
-	* eval.c: undef is_ruby_native() function when not HAVE_NATIVETHREAD
-
-Fri Nov 21 00:43:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: use #__send__ instead of #send.
-
-	* lib/test/unit/testcase.rb: ditto.
-
-Thu Nov 20 19:19:22 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: don't find the Cygwin's pthread library on MinGW.
-
-Thu Nov 20 19:15:50 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (have_st_ino?): emx (OS/2 with EMX) does not
-	  have st_ino (always 0). [ruby-dev:21972]
-
-	* lib/fileutils.rb (rename_cannot_overwrite_file?): emx does not
-	  allow overwriting files by rename(2).
-
-	* test/fileutils/test_fileutils.rb: windows? ->
-	  have_drive_letter?, have_file_perm?
-
-Thu Nov 20 17:50:58 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/tkballoonhelp.rb: new sample script
-
-	* ext/tk/sample/tkmultilistbox.rb: ditto
-
-	* ext/tk/sample/tktextframe.rb: ditto
-
-Thu Nov 20 13:37:34 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ruby.h: define is_ruby_native_thread() for no native thread
-	  environment
-
-	* eval.c: ditto
-
-Thu Nov 20 12:42:47 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* configure.in: always check existence of the pthread library
-
-	* ruby.h: define macros for ruby's native thread check
-
-	* eval.c: add ruby's native thread check
-
-	* gc.c: ditto
-
-Wed Nov 19 14:45:18 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (to_ary): print more friendly warning message.
-
-Wed Nov 19 14:32:08 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_same?): add djgpp and wince.
-
-	* lib/fileutils.rb (cannot_overwrite_file?): add wince.
-
-Wed Nov 19 11:04:47 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/fileutils.rb (cannot_overwrite_file?, have_st_ino?): bccwin32
-	  is same as mswin32.
-
-Wed Nov 19 07:54:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit.rb: do not run tests if $! is set.
-
-	* lib/test/unit/assertionfailederror.rb: extend StandardError instead
-	  Exception (irb catches the former but not the latter).
-
-Tue Nov 18 23:31:36 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* missing/memmove.c (memmove): take void *, not char *.
-
-	* missing.h (memmove): ditto.
-
-	* missing.h (strchr, strrchr): return char *, not int.
-
-Tue Nov 18 22:20:10 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_same?): temporal fix for windows.
-
-Tue Nov 18 19:05:04 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_same?): check by inode instead of path
-	  name, to detect two hard links pointing to the same content.
-
-	* test/fileutils.rb: did not create correctly looped symlinks.
-
-Tue Nov 18 18:23:05 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_read): behave as IO at empty string.
-	  [ruby-dev:21939], [ruby-dev:21941]
-
-	* ext/stringio/stringio.c (strio_getc, strio_getline): set EOF flag.
-
-	* ext/stringio/stringio.c (strio_rewind, strio_seek, strio_ungetc):
-	  clear EOF flag.
-
-	* test/stringio/test_stringio.rb: imported from [ruby-dev:21941].
-
-Tue Nov 18 14:06:35 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_each_src_dest): raise if src==dest.
-	  [ruby-talk:85344] [ruby-core:01699]
-
-	* lib/fileutils.rb: use Object#is_a? instead of Class#=== to allow
-	  e.g. remote objects for receivers.
-
-	* lib/fileutils.rb: FileTest -> File.
-
-	* lib/fileutils.rb: put parentheses for arguments of File.xxxx?
-
-	* test/fileutils/test_fileutils.rb (test_cp): test "cp a a".
-
-	* test/fileutils/test_fileutils.rb (test_mv): test "mv a a".
-
-	* test/fileutils/test_fileutils.rb (test_ln): test "ln a a".
-
-	* test/fileutils/test_fileutils.rb (test_ln_s): test "ln_s a a".
-
-	* test/fileutils/test_fileutils.rb (test_install): test "install a a".
-
-	* test/fileutils/fileasserts.rb: new method assert_symlink.
-
-	* test/fileutils/fileasserts.rb: assert_is_directory -> assert_directory.
-
-Mon Nov 17 19:38:49 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (getcwdofdrv): avoid using getcwd() directly, use
-	  my_getcwd() instead.
-
-	* merged NeXT, OpenStep, Rhapsody ports patch from Eric Sunshine
-	  <sunshine@sunshineco.com>.  [ruby-core:01596]
-
-Mon Nov 17 10:50:27 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Completion::complete): allow least
-	  common completion for three or more candidates.
-
-Mon Nov 17 09:41:38 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/ui/tk/testrunner.rb,
-	  lib/test/unit/ui/gtk/testrunner.rb:
-	  run GUI main loop in sub thread.
-
-	* lib/test/unit/ui/gtk2/testrunner.rb: imported from rough.
-
-	* lib/test/unit/autorunner.rb (keyword_display): sort keywords.
-
-Sun Nov 16 18:10:57 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): iterator should return value from next inside
-	  begin/rescue/end.  (ruby-bugs:PR#1218)
-
-Sun Nov 16 13:26:07 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): LINK check earlier than anything else,
-	  i.e. do not dump TYPE_IVAR for already dumped objects.
-	  (ruby-bugs:PR#1220)
-
-	* eval.c (rb_eval): call "inherited" only when a new class is
-	  generated; not on reopening.
-
-	* eval.c (eval): prepend error position in evaluating string to
-	  "mesg" attribute string only when it's available and is a
-	  string.
-
-Sun Nov 16 12:16:10 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: logging response body. [experimental]
-	  [ruby-list:38800]
-
-Sun Nov 16 10:49:38 2003  Gavin Sinclair  <gsinclair@soyabean.com.au>
-
-	* lib/thread.rb (Thread.exclusive): wrap method definition in
-	  class Thread to enable rdoc to process.
-
-Sun Nov 16 09:45:23 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (set_debug_output): warn if method is called
-	  after #start.  [ruby-dev:38798]
-
-Sun Nov 16 04:41:33 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (eval): do not re-raise exception to avoid unnecessary
-	  exception copying, instead modify exception and internal
-	  information to adjust eval().
-
-	* eval.c (backtrace): can return the current frame information
-	  only if lev < -1.
-
-Sat Nov 15 22:16:42 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* /ext/openssl/ossl_x509ext.c (ossl_x509extfactory_create_ext):
-	  refine error message.
-
-Sat Nov 15 10:05:40 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI.open_loop, OpenURI::HTTP#proxy_open):
-	  refactored to support options.
-	  (Buffer): maintain size by this class.
-
-Sat Nov 15 07:40:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_method_node): new API to retrieve method body.
-
-Fri Nov 14 13:21:30 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fix (en-bugged at 2003/11/07)
-
-	* ext/tk/lib/tkdialog.rb: TkDialog.new accepts a parent widget
-	  argument [ruby-talk:85066]
-
-Thu Nov 13 20:53:35 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (Kernel[#.]open): hard coded URI schemes removed.
-	  [ruby-ext:02251]
-
-Thu Nov 13 19:17:00 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* lib/test/unit/ui/tk/testrunner.rb: use grid and panedwindow
-	  (if available)
-
-Thu Nov 13 17:56:41 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI.open_uri): use File::RDONLY.
-	  reported by Take_tk <ggb03124@nifty.ne.jp>.
-	  [ruby-ext:02245]
-
-Thu Nov 13 16:45:53 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509req.c (ossl_x509req_to_der): add function for
-	  X509::Request#to_der.
-
-Thu Nov 13 11:31:14 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Completion#complete): prior shorter
-	  name to containing longer name.
-
-Thu Nov 13 06:08:54 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: stop freezing some classes
-
-	* ext/tk/lib/multi-tk.rb: ditto.
-
-Wed Nov 12 17:32:49 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (assert_throws, assert_nothing_thrown):
-	  uncaught throw in sub thread raises ThreadError.
-
-	* lib/test/unit/ui/tk/testrunner.rb (setup_ui): "expand" is not
-	  necessary.
-
-Wed Nov 12 14:09:43 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/monitor/test_monitor.rb: fix the timing problem by Queue.
-
-Wed Nov 12 12:59:44 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/monitor/test_monitor.rb: added.
-
-Wed Nov 12 10:14:28 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb: refactored. Thanks, Gennady Bystritsky.
-
-Wed Nov 12 06:11:39 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.c (ossl_x509_sk2ary, ossl_x509crl_sk2ary):
-	  add functions to convert STACK into Array.
-
-	* ext/openssl/ossl.h: add prototypes.
-
-	* ext/openssl/ossl_pkcs7.c (ossl_pkcs7_set_certificates,
-	  ossl_pkcs7_get_certificates, ossl_pkcs7_get_crls,
-	  ossl_pkcs7_set_crls): add functions for PKCS7#certificates=
-	  PKCS7#certificates, PKCS7#crls= and PKCS7#crls.
-
-Wed Nov 12 00:47:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/ui/testrunnermediator.rb: should require 'test/unit'.
-
-Tue Nov 11 23:54:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/ui/gtk/testrunner.rb: added a rescue clause to handle
-	  the case when the requested font is not available.
-
-Tue Nov 11 22:44:08 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (appendline): file may not end with newline.  a bug if
-	  READ_DATA_PENDING_PTR is defined. [ruby-talk:84925]
-
-Tue Nov 11 10:42:41 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: raise an exception when creating TkWindow
-	  object, because TkWindow class is an abstract class.
-
-Tue Nov 11 03:30:43 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/ext/openssl/ossl_conf.c (ossl_config_get_value): return nil
-	  if the specified value doesn't exist.
-
-	* lib/ext/openssl/ossl_conf.c (ossl_config_get_section): return
-	  a empty hash if the specified section doesn't exist.
-
-Mon Nov 10 11:40:29 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb (wait): return true on signal/broadcastfalse and
-	  false on timeout. Thanks Gennady Bystritsky.
-
-Mon Nov 10 00:07:10 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (primary): primary_value may be 0 when syntax error.
-	  [ruby-talk:84893]
-
-Sun Nov  9 02:05:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: un-deprecated #assert_not_nil to
-	  maintain symmetry with #assert_nil. Also added better output for
-	  #assert_kind_of.
-
-	* test/testunit/tc_assertions.rb: ditto.
-
-Sat Nov  8 18:50:20 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/wsdl/raa/*: add new testcase for WSDL loading, parsing and
-	  reading.
-
-	* test/soap/marshal/*: backport from soap4r/1.5.1.  all differences are
-	  for ruby/1.6.
-
-	* lib/soap/*: backport from soap4r/1.5.1.  all differences are for
-	  ruby/1.6.
-
-	* lib/wsdl/data.rb, lib/wsdl/xmlSchema/data.rb: move definition of
-	  ArrayTypeAttrName from ::WSDL::XMLSchema::* to ::WSDL::*.
-	  [ruby-talk:84813]
-
-	* lib/wsdl/soap/definitions.rb: element name typo in custom exception
-	  struct definition which is needed for wsdlDriver; camelCase ->
-	  underscore_name.
-
-Sat Nov  8 13:49:50 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* configure.in: improvement of pthread check
-
-Sat Nov  8 13:28:46 2003  Takaaki Tateishi  <ttate@ttsky.net>
-
-	* ext/dl/sym.c: Add DL.win32_last_error and DL.last_error.
-	  Thanks, Kaoru Shirai.
-
-Sat Nov  8 06:19:38 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: To fix 'pthread-enabled Tcl/Tk' problem,
-	  TclTkIp#_eval calls Tcl_Eval() on the mainloop thread only
-	  (queueing a handler to the EventQueue).
-
-	* ext/tcltklib/README.1st: edit the description of '--with-pthread-ext'
-
-Fri Nov  7 23:23:04 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (Pathname#+): if self or the argument is `.', return
-	  another.
-	  (Pathname#parent): if self is `.', return `..'.
-	  (Pathname#children): if self is `.', don't prepend self for a
-	  pathname in a result.
-	  (Pathname#join): re-implemented using Pathname#+.
-	  (Pathname#find): if self is `.', remove `./' prefix of yielding
-	  pathname.
-
-Fri Nov  7 10:23:24 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (make_hostent): get rid of SEGV on aliases
-	  lookup failure.  (ruby-bugs:PR#1215)
-
-Fri Nov  7 04:08:05 2003  UENO Katsuhiro  <katsu@blue.sky.or.jp>
-
-	* ext/zlib/zlib.c (Init_zlib): define Zlib::GzipReader#each_line as
-	  an alias of Zlib::GzipReader#each.
-
-Fri Nov  7 01:03:16 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_load): save and restore rb_prohibit_interrupt.
-	  [ruby-dev:21857]
-
-Thu Nov  6 18:05:07 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_inspect): show the path also at a closed file.
-	  [ruby-dev:21851]
-
-Thu Nov  6 11:42:07 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_set_string, strio_reopen): check
-	  tainted.
-
-	* ext/stringio/stringio.c (strio_copy, strio_ungetc, strio_write,
-	  strio_putc): add infection.
-
-	* ext/stringio/stringio.c (strio_path): just nil.  [ruby-dev:21846]
-
-	* ruby.c (proc_options): reserve searched script path in the
-	  source file name table.  [ruby-list:38765]
-
-	* lib/optparse.rb (OptionParser::Completion#complete): default not to
-	  ignore case on completion.  [ruby-talk:84726]
-
-	* win32/win32.c (make_cmdvector): process backslashes even if a quote
-	  is not enclosed.
-
-Wed Nov  5 23:49:45 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* sample/openssl/gen_csr.rb: there (at least) is a CA which does not
-	  accept DN in UTF8STRING format.  it's a sample.
-
-Wed Nov  5 22:55:16 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* configure.in, eval.c, signal.c: : add '--with-pthread-ext'
-	  option to fix the pthread trouble on 'tcltklib'
-
-	* ext/tcltklib/README.1st: add the description of '--with-pthread-ext'
-
-	* ext/tk/lib/tktext.rb: add TkText#text_copy, text_cut, text_paste
-	  to support Tcl/Tk8.4's tk_textCopy, tk_textCut, tk_textPaste
-
-	* ext/tk/lib/tk.rb: add TkMenu#set_focus support Tcl/Tk's
-	  tk_menuSetFocus
-
-Wed Nov  5 17:33:45 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_load): allow interrupt during loaded program
-	  evaluation.  [ruby-dev:21834]
-
-	* hash.c (rb_hash_fetch): always warn if default argument and a
-	  block are supplied at the same time. [ruby-dev:21842]
-
-	* hash.c (env_fetch): ditto.
-
-	* array.c (rb_ary_fetch): ditto.
-
-Wed Nov  5 19:08:47 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Switch::PlacedArgument::parse):
-	  do not remove next argument if empty value is placed.
-
-	* test/optparse: added.
-
-Wed Nov  5 17:05:18 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/ui/gtk/testrunner.rb: typo.
-
-Wed Nov  5 11:13:32 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c: add #include "version.h". this file still depends on it.
-
-	* Makefile.in, bcc32/Makefile.sub, win32/Makefile.sub,
-	  wince/Makefile.sub: add version.h dependency to string.c.
-
-Wed Nov  5 09:14:23 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb: revert to the previous revision.
-
-Wed Nov  5 08:39:51 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/https.rb (HTTPRequest#parse): set @client_cert_chain.
-
-	* lib/webrick/https.rb (HTTPRequest#meta_vars): create
-	  SSL_CLIENT_CERT_CHAIN_n from @client_cert_chain.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_get_peer_cert_chain): return nil
-	  if no cert-chain was given.
-
-Tue Nov  4 23:44:48 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub:
-	  remove needless version.h dependency.
-
-Tue Nov  4 23:38:43 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* class.c, hash.c, string.c: remove #include "version.h".
-
-	* Makefile.in: remove needless version.h dependency.
-
-Tue Nov  4 06:54:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): fptr->f may be NULL, if IO is closed in the
-	  signal handler.
-
-	* io.c (io_read): ditto.
-
-	* string.c (get_pat): remove 1.8.0 warning code.
-
-	* string.c (rb_str_match): extend warning until 1.8.2.
-
-	* string.c (rb_str_match2): ditto.
-
-	* class.c (class_instance_method_list): remove 1.8.0 warnings.
-	  method_list now recurs.  [ruby-dev:21816]
-
-	* class.c (rb_obj_singleton_methods): ditto.
-
-	* array.c (rb_ary_select): remove select with block.
-	  [ruby-dev:21824]
-
-	* hash.c (rb_hash_select): ditto.
-
-	* hash.c (env_select): ditto.
-
-	* re.c (match_select): ditto.
-
-	* struct.c (rb_struct_select): ditto.
-
-Mon Nov  3 22:53:21 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/racc/parser.rb: synchronize with Racc 1.4.4.
-
-	* ext/racc/cparse/cparse.c: ditto.
-
-	* ext/racc/cparse/cparse.c (parse_main): should abort when
-	  the length of LR state stack <=1, not ==0.
-
-Mon Nov  3 08:50:47 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (check_uid_switch): remove duplicated error messages.
-
-	* process.c (check_gid_switch): ditto.
-
-Sun Nov  2 02:28:33 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/ssl.rb: new option :SSLExtraChainCert.
-
-Sun Nov  2 01:02:04 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* string.c (rb_str_hash): Update the HASH_PERL alternative hash
-	  algorithm in sync with Perl 5.8.
-
-	* st.c (strhash): Ditto.
-
-Sat Nov  1 18:21:09 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_peer_cert_chain): add new method
-	  SSLSocket#peer_cert_chain.
-
-	* ext/openssl/ossl_x509req.c (GetX509ReqPtr): new function
-	  which returns underlying X509_REQ.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509extfactory_set_issuer_cert,
-	  ossl_x509extfactory_set_subject_cert, ossl_x509extfactory_set_crl,
-	  ossl_x509extfactory_set_subject_req, ossl_x509extfactory_set_config):
-	  use underlying C struct without duplication not to leak momory.
-
-Sat Nov  1 01:49:03 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/mapping/factory.rb: mark marshalled basetype objects when
-	  @allow_original_mapping is true.  multi-referencing basetype node is
-	  prohibited in SOAP/1.1 encoding but soap4r's original ruby object
-	  mapping requires basetype to be marked to detect self referencing
-	  loop.  e.g. o = 1; o.instance_eval { @iv = o }  soap4r's original
-	  mapping is only used through soap/marshal API.
-
-	* test/soap/marshal/test_marshal.rb: add tests for self referencing
-	  immutable objects.
-
-	* test/soap/calc/test_calc_cgi.rb: fix test name.
-
-Fri Oct 31 22:26:29 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/string_wce.c (strrchr): should decrement pointer.
-
-	* wince/Makefile.sub: correct a range of isdigit().
-
-Fri Oct 31 12:55:24 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in, lib/mkmf.rb: add RPATHFLAG for NetBSD.
-	  [ruby-dev:21791]
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, win32/Makefile.sub: ditto.
-
-Fri Oct 31 01:38:14 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* wince/Makefile.sub, win32/Makefile.sub (.y.c): allow white spaces
-	  at the beginning of line to remove by sed. (ruby-bugs-ja:PR#580)
-
-Fri Oct 31 01:02:24 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compar.c (cmp_equal): protect exceptions from <=> comparison
-	  again.  returns nil if any exception or error happened during
-	  comparison.
-
-	* eval.c (search_required): should update *featurep when DLEXT2 is
-	  defined. (ruby-bugs-ja:PR#581)
-
-Thu Oct 30 23:41:04 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: add DRbArray
-
-	* lib/drb/invokemethod.rb: fix Hash#each problem. [ruby-dev:21773]
-
-	* lib/drb/unix.rb: add LoadError. [ruby-dev:21743]
-
-Thu Oct 30 23:19:11 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/generator.rb: better XML pretty printing.
-
-	* lib/soap/encodingstyle/soapHandler.rb: remove unnecessary namespace
-	  assignment in the element which has "encodingStyle" attribute, and
-	  add necessary namespace assignment for "arrayType" attribute.
-
-	* test/soap/calc/test_calc_cgi.rb: take over $DEBUG to ruby process
-	  through CGI.
-
-Thu Oct 30 22:59:39 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/yaml2byte.c: HASH const too long.  Thanks, matz.
-
-Thu Oct 30 19:13:53 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syck/MANIFEST: Add yamlbyte.h.
-
-Thu Oct 30 14:25:31 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (READ_DATA_BUFFERED): new macro to detect whether stdio
-	  buffer filled.
-
-	* io.c (rb_io_fptr_cleanup): move path deallocation to
-	  rb_io_fptr_finalize (finalizer called by GC).
-
-Thu Oct 30 13:23:39 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (logop): left may be NULL. [ruby-talk:84539]
-
-	* eval.c (rb_eval): NODE_CASE nd_head may be NULL.
-
-Thu Oct 30 10:14:51 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/test/unit/autorunner.rb: make fox runner work.
-
-Thu Oct 30 09:32:26 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_f_system): fixed lack of security check before
-	  calling do_spawn() on win32. [ruby-talk:84555]
-
-Thu Oct 30 02:46:35 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): single array value to normal Proc#call
-	  (i.e. not via lambda call), should be treated just like yield.
-	  [ruby-dev:21726]
-
-Thu Oct 30 02:25:48 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#initialize):
-	  add new method to inherit @sync from @io.sync.
-
-	* ext/openssl/lib/net/protocols.rb (SSLIO#ssl_connect): no need to
-	  set sync flag explicitly.
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_initialize): call super.
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_setup): set extra chain
-	  certificates in @extra_chain_cert.
-
-Wed Oct 29 22:02:04 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/drb/drbtest.rb: use rbconfig.rb to make the path of ruby
-	  interpreter to exec, instead of test/ruby/envutil.rb,
-
-Wed Oct 29 19:58:59 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/tcltklib/tcltklib.c (CONST84): define CONST84 when it is not
-	  defined and TCL_MAJOR_VERSION >= 8.
-
-	* ext/tcltklib/tcltklib.c (VwaitVarProc, WaitVariableProc,
-	  rb_threadVwaitProc): use CONST84 instead of CONST.
-
-	* ext/tcltklib/tcltklib.c (ip_rbTkWaitCommand,
-	  ip_rb_threadTkWaitCommand): use CONST84 always.
-
-Wed Oct 29 17:27:05 2003  Tanaka Akira  <akr@m17n.org>
-
-	* re.c (rb_reg_s_union, Init_Regexp): new method `Regexp.union'.
-
-	* lib/pathname.rb (realpath): examine Dir.pwd because it may have
-	  symlinks.
-
-Wed Oct 29 17:16:31 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_longjmp): must not disturb original jump.
-	  [ruby-dev:21733]
-
-Wed Oct 29 15:28:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_Proc): taint preallocated exception object
-	  sysstack_error. [ruby-talk:84534]
-
-Wed Oct 29 11:27:39 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (ret_args): node may be NULL. [ruby-talk:84530]
-
-Tue Oct 28 15:20:12 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/tcltklib/tcltklib.c (VwaitVarProc, ip_rbVwaitObjCmd,
-	  WaitVariableProc, WaitVisibilityProc, WaitWindowProc,
-	  ip_rbTkWaitObjCmd, ip_rbTkWaitCommand, rb_threadVwaitProc,
-	  rb_threadWaitVisibilityProc, rb_threadWaitWindowProc,
-	  ip_rb_threadVwaitObjCmd, ip_rb_threadTkWaitObjCmd): prototype;
-	  avoid VC++ warnings.
-
-Mon Oct 27 19:19:55 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_longjmp): ignore reentering error while warning.
-	  [ruby-dev:21730]
-
-Mon Oct 27 00:23:50 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_ruby): bug fix on Win : hang-up when
-	  calling 'exit' in the Tk callback procedure. [ruby-list:38656]
-
-Sat Oct 25 09:18:04 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_method_missing): protect exception from within
-	  "inspect".  (ruby-bugs:PR#1204)
-
-Fri Oct 24 23:26:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_each): Hash#each should yield single value.
-	  [ruby-talk:84420]
-
-	* hash.c (env_each): ditto for ENV.each.
-
-Thu Oct 23 20:25:32 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (GenericServer#start): should rescue
-	  IOError from IO::accept. [ruby-dev:21692]
-
-Thu Oct 23 17:59:36 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): initialize stack bottom for embedding.
-	  [ruby-dev:21686]
-
-	* ext/dl/extconf.rb: move list of files to clean from DEPEND file,
-	  to get rid of macro redefinitions.
-
-Thu Oct 23 13:44:00 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y: integrate operations for stack_type.  [ruby-dev:21681]
-
-Thu Oct 23 00:41:45 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/calc/*, test/soap/helloworld/*: set logging threshold
-	  to ERROR.
-
-Wed Oct 22 12:53:31 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (Test::Unit::Collector::Dir#collect_file):
-	  ignore tests which raised LoadError.
-
-	* test/drb/drbtest.rb, test/ruby/test_beginendblock.rb,
-	  test/ruby/test_system.rb: avoid requiring same file twice.
-
-	* test/drb/test_drbssl.rb, test/drb/test_drbunix.rb: should not use
-	  ARGV unless invoked directly.  do not create test cases unless
-	  required libraries are available.
-
-Wed Oct 22 02:31:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): should not ignore exit_value in END
-	  execution. [ruby-dev:21670]
-
-Tue Oct 21 23:16:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): call finalizers and exit procs before
-	  terminating threads.
-
-	* eval.c (ruby_cleanup): preserve ruby_errinfo before ruby_finalize_0().
-
-Tue Oct 21 15:57:11 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (Test::Unit::Collector::Dir#collect_file):
-	  prepend the directory of target file to the load path.
-
-Tue Oct 21 15:08:53 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (do_spawn, do_aspawn): should wait child process even
-	  if callded with P_OVERLAY.
-
-	* win32/win32.c (do_spawn, do_aspawn): should return child's exit
-	  status to parent.
-
-Tue Oct 21 00:35:02 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/calc/*, test/soap/helloworld/*: catch the exception from
-	  test server thread and recover.
-
-Tue Oct 21 00:22:57 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/*: import drb/runit.
-
-Mon Oct 20 23:55:47 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): set current node after arguments evaluation.
-	  [ruby-dev:21632]
-
-	* eval.c (rb_yield_0): set current node and keep it at local jump.
-
-Mon Oct 20 22:01:18 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_cleanup): keep thread group for main thread.
-	  [ruby-dev:21644]
-
-Mon Oct 20 18:28:10 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_catch): backout.
-
-Mon Oct 20 17:31:46 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (PUSH_FRAME): generate unique number to be TAG_JUMP()
-	  destination.
-
-	* eval.c (localjump_destination): use unique number in ruby_frame
-	  for localjump destination.
-
-Mon Oct 20 11:31:44 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_signal.rb (test_signal): restore old trap.
-
-Mon Oct 20 11:00:46 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_sweep): loosen page free condition to avoid add_heap()
-	  race condition. [ruby-dev:21633]
-
-	* gc.c (gc_sweep): do not update malloc_limit when malloc_increase
-	  is smaller than malloc_limit.
-
-Mon Oct 20 09:45:12 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/debug.rb (debug_command): remove debug print.
-
-Sun Oct 19 13:12:30 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (foreachline, dir_foreach): add obsolete warning.
-
-Sun Oct 19 00:14:22 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/calc/*, test/soap/helloworkd/*: changed port# of test
-	  server. (17171)
-
-Sat Oct 18 23:01:32 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* missing/acosh.c (DBL_MANT_DIG): typo fix(ifdef -> ifndef).
-
-Sat Oct 18 05:48:59 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c: YAML::Syck::compile method.
-
-	* ext/syck/syck.c: Buffer edge bug.
-
-	* ext/syck/yaml2byte.c: YAML to bytecode converter.
-
-	* ext/syck/yamlbyte.h: Ditto.
-
-	* ext/syck/bytecode.c: Bytecode parser fixes to empty collections
-	  and empty strings.
-
-	* ext/syck/token.c: Ditto.
-
-Fri Oct 17 23:07:38 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/enumerator/enumerator.c, ext/enumerator/enumerator.txt:
-	  Provide Kernel#to_enum as an alias for Kernel#enum_for.  Maybe
-	  this is a better name.
-
-Fri Oct 17 23:00:30 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/generator.rb: Add rdoc documentation.
-
-Fri Oct 17 22:16:42 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: Reword and fix Overview.
-
-	* lib/set.rb: It is not necessary to require
-	  'test/unit/ui/console/testrunner'.
-
-Fri Oct 17 11:15:22 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_range.rb: added.
-
-	* MANIFEST: add test/ruby/test_range.rb.
-
-Fri Oct 17 03:21:23 2003  William Sobel  <will.sobel@barra.com>
-
-	* ext/socket/socket.c (make_hostent): h_aliases may be NULL.
-	  (ruby-bugs:PR#1195)
-
-	* ext/socket/socket.c (sock_s_gethostbyaddr): ditto.
-
-Fri Oct 17 00:12:41 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: (bug fix) instance variable @frame was used
-	  without initializing on TkComposite module.
-
-Thu Oct 16 23:51:04 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: If $DEBUG == true and some exception is caused
-	  in a callback operation, Ruby/Tk shows a (verbose) backtrace
-	  information on the callback process.
-
-Thu Oct 16 17:09:19 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/debug.rb (DEBUGGER__::Context::debug_command): do not call
-	  debug_silent_eval() when $1 is not set. (ruby-bugs:PR#1194)
-
-Thu Oct 16 16:54:57 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upto): ("a"..."a").to_a should return [].
-	  [ruby-core:01634]
-
-Thu Oct 16 16:40:51 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb:
-	  Add Tk::EncodedString and Tk::UTF8_String class to support
-	  characters using the \uXXXX escape to the UNICODE string.
-
-	* ext/tk/sample/{demos-en,demos-jp}/unicodeout.rb
-	  new demo-scripts (samples of Tk::UTF8_String)
-
-	* ext/tk/sample/{demos-en,demos-jp}/widget
-	  add entries for 'unicodeout.rb'
-
-Thu Oct 16 08:38:06 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/digest/test_digest.rb (test_eq): show failed class.
-
-	* test/ruby/test_iterator.rb (test_break, test_return_trace_func):
-	  test localjump destination.
-
-Wed Oct 15 20:22:31 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/netHttpClient.rb: use URI::HTTP#request_uri instead of
-	  instance_eval('path_query').  [ruby-list:38575]
-
-Wed Oct 15 17:24:45 2003  URABE Shyouhei  <root@mput.dip.jp>
-
-	* lib/cgi.rb (CGI::Cookie): tiny typo fix.
-
-Wed Oct 15 15:00:54 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_run): just return FAILURE instead of parse error
-	  count.  [ruby-list:38569]
-
-Wed Oct 15 13:17:02 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/digest/digest.c (rb_digest_base_alloc): need to initialize
-	  buffer. [ruby-dev:21622]
-
-Wed Oct 15 11:23:05 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): dump extended modules as well.
-
-	* marshal.c (r_object0): TYPE_USRMARSHAL should restore extended
-	  modules before invoking marshal_load.  these two fixes are done
-	  by Masatoshi Seki <m_seki@mva.biglobe.ne.jp>.
-
-Wed Oct 15 09:30:34 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/enumerator/enumerator.c (enumerator_each): avoid VC++ warning.
-
-	* ext/syck/syck.h: include stdio.h for definition of FILE.
-
-Wed Oct 15 08:09:07 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/bytecode.c: Checkin of YAML bytecode support.
-
-	* ext/syck/gram.c: Ditto.
-
-	* ext/syck/syck.c: Ditto.
-
-	* ext/syck/token.c: Ditto.
-
-	* ext/syck/handler.c: Ditto.
-
-	* ext/syck/handler.c: Now using 'tag' rather than 'taguri' in type URIs.
-
-	* ext/syck/rubyext.c: Ditto (on both counts).
-
-Wed Oct 15 05:05:53 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/generator.rb: A new library which converts an internal
-	  iterator to an external iterator.
-
-	* lib/abbrev.rb: A new library which creates an abbreviation table
-	  from a list.
-
-Wed Oct 15 04:31:51 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/demos-en/entry3.rb, ext/tk/sample/demos-jp/entry3.rb:
-	  new demo-scripts
-
-	* ext/tk/sample/demos-en/widget, ext/tk/sample/demos-jp/widget:
-	  add entries for 'entry3.rb'
-
-Wed Oct 15 04:31:47 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/digest/test_digest.rb: Moved from ext/digest/test.rb.
-
-Wed Oct 15 03:53:20 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fixed trouble on auto-load Tcl commands (enbug
-	  on the last commit).
-
-Wed Oct 15 00:25:00 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): argument parentheses preceded by spaces should
-	  be warned; not error.  [ruby-talk:84103]
-
-Wed Oct 15 00:20:15 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: replace Tcl/Tk's vwait and tkwait to
-	  switch on threads smoothly and avoid seg-fault.
-
-	* ext/tcltklib/tcltklib.c: add TclTkIp._thread_vwait and
-	  _thread_tkwait for waiting on a thread. (Because Tcl/Tk's vwait
-	  and tkwait command wait on an eventloop.)
-
-	* ext/tk/lib/multi-tk.rb: support TclTkIp._thread_vwait and
-	  _thread_tkwait.
-
-	* ext/tk/lib/tk.rb: now, TkVariable#wait has 2 arguments.
-	  If 1st argument is true, waits on a thread. If false, waits on
-	  an eventloop. If 2nd argument is true, checks existence of
-	  rootwidgets. If false, doesn't. Default is wait(true, false).
-
-	* ext/tk/lib/tk.rb: add TkVariable#tkwait(arg) which is equal to
-	  TkVariable#wait(arg, true). wait_visibility and wait_destroy
-	  have an argument for waiting on a thread or an eventloop.
-
-	* ext/tk/lib/tk.rb: improve of accessing Tcl/Tk's special variables.
-
-	* ext/tk/lib/tkafter.rb: support 'wait on a thread' and 'wait on
-	  an eventloop'.
-
-Wed Oct 15 00:10:24 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/baseData.rb: Introduce SOAPType as the common ancestor of
-	  SOAPBasetype and SOAPCompoundtype.
-
-	* lib/soap/generator.rb, lib/soap/element.rb, lib/soap/encodingstyle/*:
-	  Encoding methods signature change.  Pass SOAPGenerator as a parameter.
-
-	* lib/soap/mapping/*, test/soap/marshal/test_marshal.rb: Refactoring
-	  for better marshalling/unmarshalling support.  Now I think SOAP
-	  marshaller supports all kind of object graph which is supported by
-	  Ruby's original marshaller.  Of course there could be bugs as always.
-	  Find it.  :-)
-
-	* lib/soap/rpc/standaloneServer.rb: Set severity threshould to INFO.
-	  DEBUG is too noisy.
-
-	* lib/xsd/datatypes.rb: DateTime#of is obsoleted.  Use DateTime#offset.
-
-	* test/wsdl/emptycomplextype.wsdl, test/xsd/xmlschema.xml: Avoid
-	  useless warning.
-
-Tue Oct 14 19:09:35 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_finalize_0): return the given exit status unless
-	  SystemExit got raised.
-
-Tue Oct 14 11:53:49 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h (ruby_stop): never return.
-
-	* ruby.h (ruby_run): ditto.
-
-Tue Oct 14 04:43:55 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (realpath): make ELOOP check bit more robust.
-	  (children): prepend self by default.
-	  (chroot): obsoleted.
-
-Tue Oct 14 02:29:31 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_require_safe): segfault after loading .so.
-
-Tue Oct 14 02:05:23 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/Setup*, ext/enumerator/*: Add ext/enumerator, a helper
-	  module for the Enumerable interface.
-
-Mon Oct 13 23:55:59 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* test/ruby/envutil.rb: use Config::CONFIG["ruby_install_name"],
-	  not "ruby".
-
-Mon Oct 13 23:57:29 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_feature_p): match by classified suffix.
-
-	* eval.c (rb_require_safe): require library in the specified safe
-	  level.
-
-	* variable.c (rb_autoload, rb_autoload_load): restore safe level
-	  when autoload was called.  [ruby-dev:21338]
-
-	* intern.h: prototypes; rb_require_safe.
-
-	* test/runner.rb: accept non-option arguments.
-
-Mon Oct 13 20:49:51 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_new4): should not preserve FL_TAINT status in the
-	  internal shared string. [ruby-dev:21601]
-
-	* string.c (rb_str_new4): ditto.
-
-	* eval.c: use EXIT_SUCCESS and EXIT_FAILURE for exit values.
-
-	* process.c: ditto. [ruby-list:38521]
-
-Mon Oct 13 19:51:02 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* lib/debug.rb (debug_command): should enter emacs mode when
-	  assigned any value to the environment variable "EMACS".
-	  On Meadow, (getenv "EMACS") is "meadow".
-
-Sun Oct 12 14:45:03 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/win32ole/extconf.rb: check "windows.h", not "windows".
-	  [ruby-talk:84051]
-
-Sat Oct 11 20:41:03 2003  Corinna Vinschen  <corinna@vinschen.de>
-
-	* file.c (eaccess): Use access(2) on Cygwin.
-
-Sat Oct 11 17:09:21 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/rexml/quickpath.rb (REXML::QuickPath::match):
-	  escape '[' to avoid warning.
-
-Sat Oct 11 16:08:41 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (realpath): check existence of the file.
-
-	* lib/pathname.rb (realpath): re-implemented.
-	  (realpath_root?, realpath_rec): removed
-
-Sat Oct 11 10:19:39 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb: handle exceptions correctly. Thanks, Gennady
-	  Bystritsky.
-
-Fri Oct 10 07:50:54 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (is_defined): inheritance line adjustment as like as
-	  rb_call_super().
-
-Fri Oct 10 01:19:00 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_initialize): add
-	  optional argument to specify the DirectoryString type
-	  (ASN1::UTF8STRING by default). RFC3280 deprecates PrintableString
-	  for DirectoryString, and strongly requires to use UTF8String for
-	  all certificates issued after December, 31 2003.
-
-	* ext/openssl/lib/openssl/x509.rb (X509::Name::parse): ditto.
-
-Thu Oct  9 23:50:21 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): prevent thread from GC.
-	  [ruby-dev:21572]
-
-Thu Oct  9 19:11:44 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): non-volatile should be restored from
-	  volatile.
-
-Thu Oct  9 17:43:36 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (proc_save_safe_level, proc_get_safe_level,
-	  proc_set_safe_level): save/restore safe level 1..4.
-
-Thu Oct  9 16:33:23 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object0): remove unnecessary iv restoration for
-	  USRMARSHAL. [ruby-dev:21582]
-
-	* marshal.c (w_object): dump generic instance variables from
-	  a string from '_dump'.
-
-	* variable.c (rb_generic_ivar_table): return 0 if obj's FL_EXIVAR
-	  is not set.
-
-	* time.c (time_dump): copy instance variables to dumped string, to
-	  be included in the marshaled data.
-
-	* bignum.c (rb_big2ulong): add range check to ensure round trip.
-
-Thu Oct  9 15:45:27 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (uv_to_utf8): change message to "out of range", since
-	  negative values are not "too big". [ruby-dev:21567]
-
-Thu Oct  9 14:05:38 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_set_end_proc, rb_exec_end_proc): restore safe level.
-	  [ruby-dev:21557]
-
-Thu Oct  9 10:51:04 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_yield_0): no error if block is empty.
-
-Thu Oct  9 06:43:33 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (localjump_error): id should be ID.
-
-	* eval.c (rb_eval): nd_rval is set in copy_node_scope().
-
-	* eval.c (rb_yield_0): unused variable.
-
-	* eval.c (rb_yield_0): nothing to do for empty node.
-
-	* eval.c (call_end_proc, proc_invoke): adjust backtrace in END.
-	  [ruby-dev:21551]
-
-	* eval.c (rb_thread_start_0): set the value by break as the result.
-	  [ruby-dev:21552]
-
-	* eval.c (rb_thread_start_0, rb_thread_raise, rb_callcc): save
-	  variables across THREAD_SAVE_CONTEXT.
-
-Thu Oct  9 12:05:46 2003  Eric Sunshine  <sunshine@sunshineco.com>
-
-	* configure.in: revived NextStep, OpenStep, and Rhapsody ports which
-	  had become unbuildable; enhanced --enable-fat-binary option so that
-	  it accepts a list of desired architectures (rather than assuming a
-	  fixed list), or defaults to a platform-appropriate list if user does
-	  not provide an explicit list; made the default list of architectures
-	  for MAB (fat binary) more comprehensive; now uses -fno-common even
-	  when building the interpreter (in addition to using it for
-	  extensions), thus allowing the interpreter to be embedded into a
-	  plugin module of an external project (in addition to allowing
-	  embedding directly into an application); added checks for
-	  <netinet/in_systm.h> (needed by `socket' extension) and getcwd(); now
-	  ensures that -I/usr/local/include is employed when extensions'
-	  extconf.rb scripts invoke have_header() since extension checks on
-	  NextStep and OpenStep will fail without it if the desired resource
-	  resides in the /usr/local tree; fixed formatting of --help message.
-
-	* Makefile.in: $(LIBRUBY_A) rule now deletes the archive before
-	  invoking $(AR) since `ar' on Apple/NeXT can not "update" MAB archives
-	  (see configure's --enable-fat-binary option); added rule for new
-	  missing/getcwd.c.
-
-	* defines.h: fixed endian handling during MAB build (see configure's
-	  --enable-fat-binary option) to ensure that all portions of the
-	  project see the correct WORDS_BIGENDIAN value (some extension modules
-	  were getting the wrong endian setting); added missing constants
-	  GETPGRP_VOID, WNOHANG, WUNTRACED, X_OK, and type pid_t for NextStep
-	  and OpenStep; removed unnecessary and problematic HAVE_SYS_WAIT_H
-	  define in NeXT section.
-
-	* dir.c: do not allow NAMLEN() macro to trust dirent::d_namlen on
-	  NextStep since, on some installations, this value always resolves
-	  uselessly to zero.
-
-	* dln.c: added error reporting to NextStep extension loader since the
-	  previous behavior of failing silently was not useful; now ensures
-	  that NSLINKMODULE_OPTION_BINDNOW compatibility constant is defined
-	  for OpenStep and Rhapsody; no longer includes <mach-o/dyld.h> twice
-	  on Rhapsody since this header lacks multiple-include protection,
-	  which resulted in "redefinition" compilation errors.
-
-	* main.c: also create hard reference to objc_msgSend() on NeXT
-	  platforms (in addition to Apple platforms).
-
-	* lib/mkmf.rb: now exports XCFLAGS from configure script to extension
-	  makefiles so that extensions can be built MAB (see configure's
-	  --enable-fat-binary option); also utilize XCFLAGS in cc_command()
-	  (but not cpp_command() because MAB flags are incompatible with
-	  direct invocation of `cpp').
-
-	* ext/curses/extconf.rb: now additionally checks for presence of these
-	  curses functions which are not present on NextStep or Openstep:
-	  bkgd(), bkgdset(), color(), curs(), getbkgd(), init(), scrl(), set(),
-	  setscrreg(), wattroff(), wattron(), wattrset(), wbkgd(), wbkgdset(),
-	  wscrl(), wsetscrreg()
-
-	* ext/curses/curses.c: added appropriate #ifdef's for additional set of
-	  curses functions now checked by extconf.rb; fixed curses_bkgd() and
-	  window_bkgd() to correctly return boolean result rather than numeric
-	  result; fixed window_getbkgd() to correctly signal an error by
-	  returning nil rather than -1.
-
-	* ext/etc/etc.c: setup_passwd() and setup_group() now check for null
-	  pointers before invoking rb_tainted_str_new2() upon fields extracted
-	  from `struct passwd' and `struct group' since null pointers in some
-	  fields are common on NextStep/OpenStep (especially so for the
-	  `pw_comment' field) and rb_tainted_str_new2() throws an exception
-	  when it receives a null pointer.
-
-	* ext/pty/pty.c: include "util.h" for strdup()/ruby_strdup() for
-	  platforms such as NextStep and OpenStep which lack strdup().
-
-	* ext/socket/getaddrinfo.c: cast first argument of getservbyname(),
-	  gethostbyaddr(), and gethostbyname() from (const char*) to non-const
-	  (char*) for older platforms such as NextStep and OpenStep.
-
-	* ext/socket/socket.c: include "util.h" for strdup()/ruby_strdup() for
-	  platforms such as NextStep and OpenStep which lack strdup(); include
-	  <netinet/in_systm.h> if present for NextStep and OpenStep; cast first
-	  argument of gethostbyaddr() and getservbyname() from (const char*) to
-	  non-const (char*) for older platforms.
-
-	* ext/syslog/syslog.c: include "util.h" for strdup()/ruby_strdup() for
-	  platforms such as NextStep and OpenStep which lack strdup().
-
-Wed Oct  8 22:19:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit.rb: removed installation instructions.
-
-	* lib/test/unit/ui/testrunnermediator.rb: moved the run flag to a more
-	  central location.
-
-	* lib/test/unit.rb: ditto.
-
-	* lib/test/unit.rb: extracted the running code in to AutoRunner.
-
-	* lib/test/unit/autorunner.rb: added.
-
-	* lib/test/unit/collector/objectspace.rb: extracted common test
-	  collection functionality in to a module.
-
-	* lib/test/unit/collector.rb: ditto; added.
-
-	* test/testunit/collector/test_objectspace.rb: ditto.
-
-	* lib/test/unit/collector/dir.rb: added. Supports collecting tests out
-	  of a directory structure.
-
-	* test/testunit/collector/test_dir.rb: added.
-
-	* test/runner.rb: simplified to use the new capabilities.
-
-Tue Oct  7 15:23:09 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb: add tests for nested BEGIN/END.
-
-	* test/ruby/beginmainend.rb: add tests for nested BEGIN/END.
-
-	* test/ruby/endblockwarn.rb: new file added to test of END-in-method
-	  warning.
-
-Tue Oct  7 12:23:47 2003  Tanaka Akira  <akr@m17n.org>
-
-	* ext/fcntl/fcntl.c (Init_fcntl): define Fcntl::O_ACCMODE.
-
-	* ext/socket/extconf.rb: useless assignment removed.
-
-Tue Oct  7 09:13:24 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb (test_endinmethod): END{} is now
-	  allowed in eval.
-
-Tue Oct  7 04:15:25 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): should not expand mrhs if lhs is solely starred.
-
-Tue Oct  7 02:57:53 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (stmt): rhs of multiple assignment should not be
-	  expanded using "to_a". [ruby-dev:21527]
-
-Tue Oct  7 01:42:34 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_get_asn1type): use appropriate
-	  free function for ASN1_OBJECT.
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1obj_get_sn): add new function for
-	  ASN1::ObjectId#sn; it returns short name text representation of OID.
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1obj_get_ln): add new function for
-	  ASN1::ObjectId#ln; it returns long name text representation of OID.
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1obj_get_oid): add new function for
-	  ASN1::ObjectId#oid; it returns numerical representation of OID.
-
-Mon Oct  6 22:59:46 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb (IOReader, BasicWriter): call binmode when a given IO
-	  respond_to?(:binmode).  record separator was wrong when you gave
-	  text mode IO to Reader.parse and Writer.generate.
-
-	* test/csv/test_csv.rb: add tests for above change.
-
-Sun Oct  5 23:27:09 2003  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/extconf.rb: check recvmsg even if sendmsg is exists.
-
-	* ext/socket/socket.c (thread_read_select): restored.
-
-Mon Oct  6 16:23:38 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object): wrong method name in the message.
-
-Mon Oct  6 16:02:05 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (stmt): END in method should cause warning.
-	  [ruby-dev:21519]
-
-Mon Oct  6 15:17:23 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (test_block_argument_without_paren):
-	  added. (follows sample/test.rb)
-
-Mon Oct  6 11:57:06 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb, test/ruby/beginmainend.rb: added
-	  test for eval-ed BEGIN END order.
-
-Mon Oct  6 09:19:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): should pass "weak" value to next level.
-	  [ruby-dev:21496]
-
-	* eval.c (proc_alloc): should not use cached object if klass is
-	  different. [ruby-talk:83685]
-
-Sun Oct  5 23:27:09 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb: version information is added in document.
-
-Sun Oct  5 23:07:03 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_f_END): block should be given.  [ruby-dev:21497]
-
-Sun Oct  5 22:51:23 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/ext/openssl/extconf.rb: add check for some engine functions
-	  unavailable in OpenSSL-0.9.6.
-
-	* lib/ext/openssl/ossl_engine.c: ditto.
-
-Sun Oct  5 17:56:30 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): fix evaluation order.  [ruby-list:38431]
-
-Sun Oct  5 15:05:06 2003  akira yamada  <akira@ruby-lang.org>
-
-	* test/uri/*: translated RUNIT to Test::Unit.
-
-Sun Oct  5 14:37:39 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/xsd/datatypes.rb: Rational -> Decimal string bug fix.
-
-	* test/soap/marshal/test_marshal.rb: ditto.
-
-	* test/soap/calc/test_calc_cgi.rb: add Config::CONFIG["EXEEXT"] to
-	  RUBYBIN.
-
-Sun Oct  5 13:47:22 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb, test/ruby/beginmainend.rb: add tests
-	  about scope, order and allowed syntax.
-
-Sun Oct  5 11:54:29 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/envutil.rb: added.  split "rubybin" from test_system.rb.
-
-	* test/ruby/test_system.rb: use envutil.rb
-
-	* test/ruby/test_beginendblock.rb: added.
-
-	* test/ruby/beginmainend.rb: added.  used in test_beginendblock.rb.
-
-Sun Oct  5 11:23:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* test/testunit/runit/test_testresult.rb: removed some unnecessary
-	  cruft.
-
-Sun Oct  5 11:14:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/rubyunit.rb: aliasing TestCase into the top level is
-	  problematic.
-
-	* lib/runit/assert.rb: fixed a couple of bugs caused by recent
-	  refactoring in Test::Unit.
-
-	* test/testunit/runit/*: added.
-
-Sun Oct  5 10:55:29 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/open-uri.rb (URI::Generic#find_proxy): no_proxy support did not
-	  work.  [ruby-dev:21484]
-
-Sun Oct  5 09:52:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: will use pp for output if available.
-	  Can be disabled by setting Assertions.use_pp = false.
-
-	* test/testunit/test_assertions.rb: made a small change to exception
-	  formatting.
-
-Sun Oct  5 07:42:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: made small improvements to assertion
-	  messages. Deprecated Assertions#assert_not_nil; use #assert instead.
-
-	* test/testunit/test_assertions.rb: ditto.
-
-	* test/testunit/util/test_procwrapper.rb: use #assert instead of
-	  #assert_not_nil.
-
-Sun Oct  5 04:10:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: refactored message building.
-
-Sun Oct  5 03:40:22 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.h: global symbols should be declared
-	  as external.
-
-Sun Oct  5 03:03:20 2003  akira yamada  <akira@ruby-lang.org>
-
-	* test/ruby/test_exception.rb (test_else): added.
-
-Sun Oct  5 02:12:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: changed assertion messages to rely more
-	  heavily on #inspect. Added backtrace filtering for exceptions in
-	  assertion messages.
-
-	* test/testunit/test_assertions.rb: ditto.
-
-Sun Oct  5 02:12:00 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/acl.rb, lib/drb/ssl.rb: added.
-
-	* lib/drb/drb.rb: exit from a thread using 'break'.
-
-Sat Oct  4 21:49:14 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* gc.c (Init_stack): the type of space is changed to unsigned int
-	  from double.  [ruby-dev:21483]
-
-Sat Oct  4 17:52:59 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/netHttpClient.rb: follow http-access2.  hosts which matches
-	  ENV['no_proxy'] or ENV['NO_PROXY'] are not proxyed.
-	  - [,:] separated. ("ruby-lang.org:rubyist.net")
-	  - no regexp. (give "ruby-lang.org", not "*.ruby-lang.org")
-	  - if you want specify host by IP address, give full address.
-	    ("192.168.1.1, 192.168.1.2")
-
-	* lib/soap/rpc/cgistub.rb: return "Status: XXX MMM" line.
-
-	* test/runner.rb: give testsuite name.
-
-Sat Oct  4 15:16:02 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): instance variable dump do not cause error
-	  for objects that cannot be dumped, if they traversed from
-	  marshal_dump.  they are just ignored.
-
-	* gc.c (Init_stack): cast "space" (doble value) into unsigned
-	  int.  should run on PowerPC.
-
-	* eval.c (rb_eval): should not execute else part if any exception
-	  is caught. [ruby-dev:21482]
-
-	* parse.y (f_args): should allow unparenthesized block argument.
-
-	* parse.y (f_rest_arg): should allow unparenthesized rest
-	  argument.
-
-Sat Oct  4 14:59:51 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (initialize): raise ArgumentError if argument has
-	  '\0' character.
-	  (relative_path_from): new method.
-	  (each_entry): new method for replacement of dir_foreach.
-	  (foreach, foreachline, dir_foreach, chdir): obsoleted.
-
-Sat Oct  4 12:58:48 2003  akira yamada  <akira@ruby-lang.org>
-
-	* test/uri/* (6 files): added.
-
-Sat Oct  4 12:44:45 2003  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri/ftp.rb, lib/uri/mailto.rb: renamed to #to_s from #to_str.
-
-Sat Oct  4 07:33:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/testsuite.rb: changed #<< to return self, and added
-	  #delete.
-
-	* test/testunit/test_testsuite.rb: ditto. Also slightly refactored
-	  #test_size.
-
-	* lib/test/unit/collector/objectspace.rb: collector now preserves the
-	  hierarchy of suites.
-
-	* test/testunit/collector/test_objectspace.rb: ditto.
-
-Sat Oct  4 04:48:49 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c: default keys handled.
-
-	* ext/syck/syck.h: lowered default buffer size to 16k for increased
-	  performance.
-
-	* test/yaml: checkin of basic unit tests.
-
-Sat Oct  4 04:24:19 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: add check for X509V3_set_nconf.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509extfactory_set_config):
-	  cannot implement if X509V3_set_nconf doesn't exist.
-
-Sat Oct  4 02:12:44 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/xsd/datatypes.rb: dump sign by itself.  under the problematic
-	  platform, sprintf("%+.10g", -0.0) => +0.  sigh.
-
-	* sample/wsdl/amazon/*: update schema ver2 to ver3.
-
-Sat Oct  4 01:33:46 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb (initialize): duplicate and freeze argument.
-	  (to_s): return duplicated string.
-	  (children): new method.
-	  (each_line): new alias to foreachline.
-
-Fri Oct  3 16:13:19 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_asn1.c: add DER encoder and decoder.
-
-	* ext/openssl/ossl_asn1.h: add OpenSSL::ASN1 module.
-
-	* ext/openssl/ossl.c (Init_openssl): call Init_ossl_asn1.
-
-	* ext/openssl/extconf.rb: check if X509_ATTRIBUTE has field "single".
-
-	* ext/openssl/ossl_x509attr.c (ossl_x509attr_set_value): accept
-	  DER encoded data argument.
-
-	* ext/openssl/ossl_x509attr.c (ossl_x509attr_get_value): return
-	  DER encoded data in OpenSSL::ASN1 types.
-
-Fri Oct  3 13:02:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit.rb: refactored to use optparse.
-
-	* lib/test/unit.rb: added support for selecting the output
-	  level from the command-line.
-
-	* lib/test/unit.rb: added a command-line switch to stop processing
-	  the command-line, allowing arguments to be passed to tests.
-
-	* lib/test/unit.rb: changed the method for specifying a runner or a
-	  filter from the command-line.
-
-	* lib/test/unit/collector/objectspace.rb: fixed a bug causing all
-	  tests to be excluded when the filter was set to an empty array.
-
-	* test/testunit/collector/test_objectspace.rb: ditto.
-
-Fri Oct  3 08:14:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex::identify_identifier): support
-	  'class ::Foo' syntax. [ruby-talk:83514]
-
-Fri Oct  3 08:01:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: added a default message for #assert,
-	  #assert_block, and #flunk.
-
-	* test/testunit/test_assertions.rb: ditto.
-
-	* lib/test/unit/failure.rb: failures now show a better trace of where
-	  they occurred.
-
-	* test/testunit/test_failure.rb: ditto (added).
-
-	* lib/test/unit/testcase.rb: ditto.
-
-	* test/testunit/test_testcase.rb: ditto.
-
-	* lib/test/unit/util/backtracefilter.rb: added.
-
-	* test/testunit/util/test_backtracefilter.rb: added.
-
-	* lib/test/unit/error.rb: changed to use BacktraceFilter and improved
-	  output.
-
-	* test/testunit/test_error.rb: ditto.
-
-Thu Oct  2 20:33:49 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_failure_initialize): conform with
-	  orthodox initialization method.
-
-	* ext/iconv/iconv.c (iconv_fail): initialize exception instance
-	  from the class, and do not share instance variables with the
-	  others.  [ruby-dev:21470]
-
-Thu Oct  2 18:20:27 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (Init_Time): define initialize.  [ruby-dev:21469]
-
-Thu Oct  2 17:39:38 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_engine.c: add a new module OpenSSL::Engine.
-	  it supports OpenSSL hardware cryptographic engine interface.
-
-	* ext/openssl/ossl_engine.h: ditto.
-
-	* ext/openssl/MANIFEST: add ossl_engine.c and ossl_engine.h.
-
-	* ext/openssl/extconf.rb: add check for openssl/engine.h.
-
-	* ext/openssl/ossl.c: call Init_ossl_engine().
-
-	* ext/openssl/ossl.h: include openssl/engine.h.
-
-	* ext/openssl/ossl_pkey_{rsa,dsa,dh}.c: check if underlying
-	  EVP_PKEY referes engine.
-
-Thu Oct  2 17:22:37 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_load): restore instance variables (if any) before
-	  loading from marshaled data.
-
-Thu Oct  2 14:19:15 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_fail): now yield erred substring, and
-	  set error object to $!.
-
-	* ext/iconv/iconv.c (iconv_convert): error handler block should
-	  return appended part and the rest.  if rest is nil, the
-	  conversion stops.
-
-Thu Oct  2 12:00:18 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_const_defined_0): look up constants in Object as
-	  well.  [ruby-dev:21458]
-
-	* test/ruby/test_defined.rb (TestDefined::test_defined): test for
-	  constants.
-
-Thu Oct  2 11:17:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: should not capture an
-	  AssertionFailedError unless explicitly requested.
-
-	* test/testunit/test_assertions.rb: ditto.
-
-	* test/testunit/collector/test_objectspace.rb: fixed a test failure
-	  caused by methods being returned in different orders on different
-	  platforms by moving test sorting from TestSuite into the locations
-	  where suites are constructed. [ruby-talk:83156]
-
-	* lib/test/unit/testcase.rb: ditto.
-
-	* lib/test/unit/testsuite.rb: ditto.
-
-	* lib/test/unit/collector/objectspace.rb: ditto.
-
-Thu Oct  2 03:25:01 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (rb_thread_raise): prototype; avoid VC++ warning.
-
-Thu Oct  2 01:37:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_mdump): new marshal dumper. _dump is still
-	  available for compatibility.
-
-	* time.c (time_mload): new marshal loader.
-
-	* marshal.c (w_object): preserve instance variables for objects
-	  with marshal_dump.
-
-	* marshal.c (r_object0): restore instance variables before calling
-	  marshal_load.
-
-	* error.c (rb_warn_m): always return nil.
-
-Thu Oct  2 01:32:46 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_block_given_p): real required condition is
-	  ruby_frame->prev->iter == ITER_CUR.
-
-	* eval.c (rb_block_given_p): ditto.
-
-	* eval.c (block_pass): update ruby_frame->iter only when previous
-	  value is ITER_NOT.
-
-Thu Oct  2 01:02:35 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_defined_at): should exclude constants from
-	  Object when TYPE(klass) == T_MODULE *and* exclude is on.
-	  [ruby-dev:21458]
-
-	* variable.c (rb_const_get_0): do not lookup constants from Object
-	  when TYPE(klass) == T_MODULE *and* exclude is on.
-
-Thu Oct  2 00:21:11 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/logger/test_logger.rb: unlinking file before close causes
-	  problem under win32 box.
-
-	* lib/xsd/datatypes.rb(XSDFloat, XSDDouble): add +/- sign explicitly
-	  when stringified and embedded into XML instance.  Ruby's sprintf may
-	  format -0.0 as "0.0" (no minus sign) depending on underlying C
-	  sprintf implementation.
-
-	* test/xsd/test_xsd.rb, test/soap/test_basetype.rb: follow above change.
-
-	* test/soap/calc/*: give httpd config param "CGIInterpreter".
-	  "/usr/bin/env ruby" thing does not work under non-Unix boxes.
-
-Thu Oct  2 00:25:21 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (ruby_signal_name): adjust to the prototype.
-
-	* process.c (pst_inspect): ditto.
-
-	* ext/etc/etc.c (etc_getgrent, Init_etc): typo.
-
-Wed Oct  1 20:49:41 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (heaps): manage slots and limits together.  [ruby-dev:21453]
-
-	* gc.c (add_heap): should not clear heaps slot even if realloc()
-	  failed.
-
-Wed Oct  1 20:36:49 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* MANIFEST: add wince/mkconfig_wce.rb.
-
-Wed Oct  1 17:22:33 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/etc/etc.c: add new functions: setpwent, getpwent, endpwent,
-	  setgrent, getgrent, endgrent.
-
-	* ext/socket/socket.c (sock_s_gethostbyname): do not reverse lookup.
-
-Wed Oct  1 17:01:30 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_load): Object scope had priority over required file
-	  scope.  [ruby-dev:21415]
-
-Wed Oct  1 14:09:53 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/mkconfig_wce.rb: sorry, forget to commit.
-
-Wed Oct  1 10:08:42 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/setup.mak: add sigmarionIII SDK support.
-
-	* wince/Makefile.sub: ditto.
-
-	* wince/mkexports.rb: fix linker error in SH4.
-
-	* wince/mkconfig_wce.rb: camouflage RUBY_PLATFORM for compiling ext.
-
-Wed Oct  1 08:02:52 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/time_wce.c (time): add zero check.
-
-Tue Sep 30 16:11:05 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* Makefile.in: copy lex.c from $(srcdir) if it's not the current
-	  directory.  [ruby-dev:21437]
-
-Tue Sep 30 11:29:23 2003  Tanaka Akira  <akr@m17n.org>
-
-	* process.c (pst_inspect): describe stopped process "stopped".
-
-Tue Sep 30 09:31:56 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/runner.rb: glob for directories.
-
-Tue Sep 30 09:11:43 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): while/until should not capture break unless
-	  they are destination of the break.
-
-Tue Sep 30 03:12:02 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (finish): revert to 1.93.
-
-	* lib/net/pop.rb (finish): revert to 1.60.
-
-	* lib/net/smtp.rb (finish): revert to 1.67.
-
-	* lib/net/http.rb (do_start): ensure to close socket if failed to
-	  start session.
-
-	* lib/net/pop.rb (do_start): ditto.
-
-	* lib/net/smtp.rb (do_start): ditto.
-
-	* lib/net/smtp.rb: SMTP#started? wrongly returned false always.
-
-Tue Sep 30 02:54:49 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/ruby/test_iterator.rb: new test
-	  test_break__nested_loop[123].
-
-Mon Sep 29 23:39:13 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (finish): does not raise IOError even if
-	  !started?, to allow closing socket which was opened before
-	  session started.
-
-	* lib/net/pop.rb (finish): ditto.
-
-	* lib/net/smtp.rb (finish): ditto.
-
-Mon Sep 29 19:06:51 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/win32ole/extconf.rb: add windows.h checking.
-	  (ruby-bugs:PR#1185)
-
-Mon Sep 29 16:18:30 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: check if the given logdevice object respond_to :write
-	  and :close, not is_a? IO.  duck duck.
-
-	* test/logger/test_logger.rb: self IO.pipe reading/writing may be
-	  locked by the flood.  use tempfile.
-
-	* lib/wsdl/xmlSchema/data.rb: wrong constant reference.
-
-Mon Sep 29 16:11:23 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb: clean up temporary symlink.
-	  Patched by NaHi.  [ruby-dev:21420]
-
-Mon Sep 29 11:16:55 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_atfork): wrong format specifier.
-	  [ruby-dev:21428]
-
-	* process.c (pst_inspect): better description.
-
-Mon Sep 29 02:31:44 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/utils.rb (Utils::su): use setgid and setuid to
-	  set real and effective IDs. and setup group access list by
-	  initgroups.
-
-Sun Sep 28 11:14:19 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* ext/digest/digest.c (Init_digest): `copy_object' was deprecated.
-	  `initialize_copy' should be defined.
-
-	* ext/stringio/stringio.c (Init_stringio): ditto.
-
-Sat Sep 27 18:25:13 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/xsd/charset.rb: XSD::Charset.is_ces did return always true under
-	  $KCODE = "NONE" environment.  check added.
-
-	* test/xsd/test_xsd.rb: add tests for above fix.
-
-Sat Sep 27 15:58:50 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/rpc/cgistub.rb: make logging severity threshold higher.
-
-	* lib/soap/rpc/standaloneServer.rb: defer WEBrick server start to give
-	  a chance to reset logging severity threshold.
-
-	* test/soap/calc/test_*, test/soap/helloworld/test_helloworld.rb: run
-	  silent.
-
-Sat Sep 27 09:44:18 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/test_fileutils.rb: clear all errors on Windows.
-	  [ruby-dev:21417]
-
-	* test/fileutils/test_nowrite.rb: ditto.
-
-Sat Sep 27 04:57:07 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_file.rb: new file.  only asserts unlink-before-close
-	  behaviour now.
-
-	* test/soap/marshal/test_digraph.rb: should close before unlink.
-	  unlink-before-close pattern is not needed here.
-
-Sat Sep 27 03:32:37 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/soap/*, test/wsdl/*, test/xsd/*: move TestCase classes into
-	  each module namespace.  TestMarshal in
-	  test/soap/marshal/test_marshal.rb crashed with
-	  test/ruby/test_marshal.rb.
-
-Sat Sep 27 01:30:59 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): on win32, type of the 4th
-	  argument of getsockopt is char *.
-
-Fri Sep 26 18:35:40 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv-replace.rb: 1.8 compliance.  [ruby-talk:82946]
-
-Fri Sep 26 17:39:27 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_marshal.rb: add test for ruby's objects.
-
-Fri Sep 26 09:52:44 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* defines.h (flush_register_windows): use volatile only for gcc on
-	  Solaris.  [ruby-dev:21403]
-
-	* lib/mkmf.rb (xsystem): use system directly to honor shell meta
-	  charaters.
-
-Fri Sep 26 00:10:13 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/README: updated.
-
-Thu Sep 25 17:48:10 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl.c (ossl_buf2str): fix type of 1st argument for
-	  rb_protect.
-
-	* ext/openssl/ossl_hmac.c (ossl_hmac_digest): should return meaningful
-	  value.
-
-Thu Sep 25 09:00:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/ostruct.rb: Added OpenStruct#==.
-
-	* test/ostruct/test_ostruct.rb: Added.
-
-Thu Sep 25 07:55:26 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c, ext/openssl/ossl_pkey_dsa.c,
-	  ext/openssl/ossl_pkey_rsa.c, ext/bigdecimal/bigdecimal.h: must
-	  not use C++ or C99 style comment yet.  (ruby-bugs:PR#1184)
-
-Thu Sep 25 00:23:22 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* MANIFEST: add SOAP4R.
-
-Thu Sep 25 00:13:15 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/soap/* (29 files): SOAP4R added.
-
-	* lib/wsdl/* (42 files): WSDL4R added.
-
-	* lib/xsd/* (12 files): XSD4R added.
-
-	* test/soap/* (16 files): added.
-
-	* test/wsdl/* (2 files): added.
-
-	* test/xsd/* (3 files): added.
-
-	* sample/soap/* (27 files): added.
-
-	* sample/wsdl/* (13 files): added.
-
-Wed Sep 24 02:08:11 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb: conform to mswin32.
-	  [ruby-talk:82735], [ruby-talk:82748], [ruby-talk:82818]
-
-Tue Sep 23 23:10:16 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: add Logger#<<(msg) for writing msg without any
-	  formatting.
-
-	* test/logger/test_logger.rb: ditto.
-
-Tue Sep 23 20:47:51 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (rb_warn_m): should not warn if -W0 is specified.
-	  [ruby-talk:82675]
-
-Mon Sep 22 21:28:57 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* MANIFEST: updated.
-
-Mon Sep 22 19:22:26 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* configure.in (AC_CHECK_FUNCS): add setuid and setgid.
-
-Mon Sep 22 12:34:55 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): skip preceding zeros before counting
-	  digits in the mantissa. (ruby-bugs:PR#1181)
-
-Sun Sep 21 04:12:36 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspreq_initialize): the argument
-	  should be a String.
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspres_initialize): ditt.
-
-	* ext/openssl/ossl_x509attr.c (ossl_x509attr_initialize): ditto.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_initialize): ditto.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_set_value): ditto.
-
-Sat Sep 20 11:49:05 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: typo fixed.
-
-	* test/logger/test_logger.rb: new file.
-
-Fri Sep 19 11:39:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* test/testunit/*: Added.
-
-	* lib/test/unit.rb: Documentation update.
-
-	* lib/test/unit/ui/console/testrunner.rb (TestRunner#initialize):
-	  Ditto.
-
-	* lib/test/unit.rb: Factored out an ObjectSpace collector.
-
-	* lib/test/unit/collector/objectspace.rb: Ditto.
-
-	* sample/testunit/*: Added.
-
-Fri Sep 19 01:00:48 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/log.rb (BasicLog#log): get rid of as ineffectual
-	  condition.
-
-	* lib/webrick/log.rb (BasicLog#format): add "\n" to message.
-
-Thu Sep 18 22:43:20 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): should push PROT_PCALL tag for orphans.
-
-	* eval.c (proc_invoke): should update "result" for orphans.
-
-Thu Sep 18 20:33:03 2003  Tietew  <tietew-ml-ruby-list@tietew.net>
-
-	* parse.y (str_xquote): do not prepend escapes in
-	  backqoute literals.  [ruby-list:38409]
-
-Thu Sep 18 20:30:17 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb: update document.
-
-Thu Sep 18 15:27:05 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: new file.  Logger, formerly called devel-logger or
-	  Devel::Logger.
-
-	* sample/logger/*: new file.  samples of logger.rb.
-
-Wed Sep 17 23:41:45 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (localjump_destination): should not raise ThreadError
-	  exception for "break". [ruby-dev:21348]
-
-	* eval.c (proc_invoke): use result instead of prot_tag->retval.
-	  retval is no longer propagated to the ancestors.
-
-Wed Sep 17 20:34:00 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (tokadd_string, parse_string, yylex): escaped terminator
-	  is now interpreted as is.  [ruby-talk:82206]
-
-Wed Sep 17 18:52:36 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/fileutils/fileassertions.rb: new file.
-
-	* test/fileutils/test_fileutils.rb: new file.
-
-	* test/fileutils/test_nowrite.rb: new file.
-
-Wed Sep 17 18:51:02 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/strscan/test_stringscanner.rb: require test/unit.
-
-Wed Sep 17 18:35:34 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* test/strscan/test_stringscanner.rb: new file.
-
-Wed Sep 17 18:03:30 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl: all files are reviewed to simplify and avoid memory leak.
-
-	* ext/openssl/extconf.rb: add check for assert.h.
-
-	* ext/openssl/ossl.c (ossl_buf2str): new function to convert
-	  C buffer to String and free buffer.
-
-	* ext/openssl/ossl.c (ossl_x509_ary2sk): new function to convert
-	  Array of OpenSSL::X509 to STACK_OF(X509) with exception safe.
-
-	* ext/openssl/ossl.c (ossl_to_der, ossl_to_der_if_possible): new
-	  functions to convert object to DER string.
-
-	* ext/openssl/ossl.h: ditto.
-
-	* ext/openssl/ossl_bio.c (ossl_membio2str): new function to convert
-	  BIO to String object and free BIO.
-
-	* ext/openssl/ossl_bio.h: ditto.
-
-	* ext/openssl/ossl_pkcs7.c (ossl_pkcs7_to_der): add for "to_der".
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_to_der): ditto.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_to_der): ditto.
-
-	* ext/openssl/ossl_x509ext.c (create_ext_from_array): removed
-	  and reimplement in openssl/x509.rb.
-
-	* ext/openssl/ossl_x509attr.c: reimplemented and disable some
-	  method temporarily. this class doesn't work fine without ASN.1
-	  data support;-) I'll rewrite in near future.
-
-	* ext/openssl/lib/openssl/x509.c (X509::Attribute): get rid off
-	  unused code.
-
-	* ext/openssl/lib/openssl/x509.c (X509::ExtensionFactory): refine all.
-
-Tue Sep 16 22:25:06 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/csv/test_csv.rb: add negative tests of row_sep.
-
-Tue Sep 16 18:02:36 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): should not translate character
-	  class range edge. [ruby-list:38393]
-
-Tue Sep 16 16:47:56 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* MANIFEST: add test/csv/mac.csv.
-
-	* win32/Makefile.sub, bcc32/Makefile.sub (test): add phony NUL target.
-
-Mon Sep 15 19:02:52 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/csv.rb: add extra pamameter to specify row(record) separater
-	  character.  To parse Mac's CR separated CSV, do like this.
-	    CSV.open("mac.csv", "r", ?,, ?\r) { |row| p row.to_a }
-	  The 3rd parameter in this example ?, is for column separater and the
-	  4th ?\r is for row separater.  Row separater is nil by default.  Nil
-	  separater means "\r\n" or "\n".
-
-	* test/csv/test_csv.rb: add tests for above feature.
-
-	* test/csv/mac.csv: added.  Sample CR separated CSV file.
-
-Fri Sep 12 22:41:48 2003  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* ext/openssl/ossl.c: move ASN.1 stuff to ossl_asn1.[ch]
-
-	* ext/openssl/ossl.c: move BIO stuff to ossl_bio.[ch]
-
-	* ext/openssl/ossl_asn1.[ch]: new files
-
-	* ext/openssl/ossl_bio.[ch]: new files
-
-Fri Sep 12 12:30:41 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* intern.h (rb_disable_super, rb_enable_super): replace with dummy
-	  expressions instead of prototypes.  the functions remain yet for
-	  binary compatibility.  [ruby-talk:81758]
-
-Fri Sep 12 12:09:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_and): convert argument using 'to_int'.
-
-	* bignum.c (rb_big_or): ditto.
-
-	* bignum.c (rb_big_xor): ditto.
-
-Fri Sep 12 07:06:14 2003  David Black  <dblack@superlink.net>
-
-	* lib/scanf.rb: Took out useless @matched_item variable; some small
-	  refactoring.
-
-Thu Sep 11 08:43:44 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_require): allow "require" on $SAFE>0, if feature
-	  name is not tainted.
-
-	* lib/rexml/parsers/baseparser.rb (REXML::Parsers::BaseParser::stream):
-	  Supports StringIO.
-
-Wed Sep 10 22:47:30 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.h: add a workaround for win32 platform.
-	  libeay32.dll doesn't export functions defined in conf_api.h.
-
-	* ext/openssl/ossl_config.c (ossl_config_initialize): ditto.
-
-	* ext/openssl/ossl_config.c (ossl_config_add_value): ditto.
-
-	* ext/openssl/ossl_config.c (set_conf_section_i): should check
-	  if the argument is Array.
-
-Wed Sep 10 22:41:54 2003  Tietew  <tietew@tietew.net>
-
-	* eval.c (win32_get_exception_list): avoid VC7 warning.
-	  [ruby-win32:577]
-
-Tue Sep  9 10:39:51 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (struct tag): dst should be VALUE.
-
-Tue Sep  9 10:39:51 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (localjump_destination): stop at the scope where the current
-	  block was created.  [ruby-dev:21353]
-
-Tue Sep  9 05:17:04 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_config.rb: avoid compile error in OpenSSL-0.9.6.
-
-Tue Sep  9 02:41:35 2003  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* ext/openssl/ossl_config.c: Refine compatibility.
-
-Tue Sep  9 01:50:45 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpserver.rb (HTTPServer#access_log): add "\n" to
-	  the message.
-
-	* lib/webrick/log.rb (BasicLog#log): add "\n" only if needed.
-
-Mon Sep  8 22:15:33 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: modify security check at creating
-	  a new interpreter
-
-Mon Sep  8 20:00:12 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb, lib/optparse/version.rb: search also all
-	  capital versions.
-
-Mon Sep  8 19:26:33 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.h: include openssl/conf.h and openssl/conf_api.h.
-
-	* ext/openssl/ossl_config.c: refine all with backward compatibility.
-
-	* ext/openssl/ossl_config.h: export GetConfigPtr() and DupConfigPtr().
-
-	* ext/openssl/ossl_x509.c: added new constants under X509 module.
-	  DEFAULT_CERT_AREA, DEFAULT_CERT_DIR, DEFAULT_CERT_FILE,
-	  DEFAULT_CERT_DIR_ENV, DEFAULT_CERT_FILE_ENV and DEFAULT_PRIVATE_DIR.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509extfactory_free): don't free
-	  the members of the struct. it's left to GC.
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509_set_config): add for config=.
-
-	* ext/openssl/ossl_x509ext.c (Xossl_x509extfactory_initialize):
-	  add attr readers: issuer_certificate, subject_certificate,
-	  subject_request, crl and config.
-
-Mon Sep  8 18:26:41 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/accesslog.rb (AccessLog::setup_params): use req.port
-	  instead of config[:Port] or req.request_uri.port.
-
-	* lib/webrick/httprequest.rb (HTTPRequest#meta_vars): ditto.
-
-	* lib/webrick/httpservlet/filehandler.rb (FileHandler#dir_list): ditto.
-
-	* lib/webrick/config.rb: :Listen option never be used.
-
-	* lib/webrick/server.rb (GenericServer#initialize): don't use :Listen
-	  option and add warning message.
-
-	* lib/webrick/log.rb (BasicLog#<<): shortcut of log(INFO, ...).
-
-	* lib/webrick/httpserver.rb (HTTPServer#accesslog): use << for logging.
-
-Sun Sep  7 16:08:28 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (lib_mainloop_core): fixed signal-trap bug
-
-	* ext/tk/lib/*.rb: Ruby/Tk works at $SAFE == 4
-
-Sat Sep  6 02:26:34 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_*.rb: assert_same, assert_match, and so on.
-
-Sat Sep  6 18:45:46 2003  Mauricio Fernandez  <batsman.geo@yahoo.com>
-
-	* parse.y (assignable): call rb_compile_error(), not rb_bug().
-	  [ruby-core:01523]
-
-Sat Sep  6 17:40:41 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ruby_missing.c: rid of unnecessary backward
-	  compatibility stuff. and remove DEFINE_ALLOC_WRAPPER from
-	  all sources.
-
-	* ext/openssl/ossl_x509ext.c (X509::Extension.new): new method.
-
-	* ext/openssl/ossl_x509ext.c (X509::Extension#oid=): new method.
-
-	* ext/openssl/ossl_x509ext.c (X509::Extension#value=): new method.
-
-	* ext/openssl/ossl_x509ext.c (X509::Extension#critical=): new method.
-
-Sat Sep  6 01:23:22 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): need to quote cmd if RUBYSHELL is set.
-
-	* win32/win32.c (CreateChild): fix condition about whether to call
-	  shell or not.
-
-Sat Sep  6 00:36:20 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* Makefile.in (test): phony target.
-
-	* lib/mkmf.rb (have_library, find_library): configure by library
-	  name.
-
-	* lib/optparse.rb (OptionParser#order, #permute, #parse): allow an
-	  array as argument.
-
-	* test/ruby/test_*.rb: moved invariants to left side in
-	  assert_equal, and use assert_nil, assert_raises and so on.
-
-	* win32/win32.c (isInternalCmd): distinguish command.com and
-	  cmd.exe.
-
-	* win32/win32.c (make_cmdvector): a character just after wildcard
-	  was ignored.  [ruby-core:01518]
-
-Fri Sep  5 20:27:08 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_*.rb: replace 'assert(a == b)' with assert_equal(a, b)'
-
-Fri Sep  5 18:00:51 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/x509.rb: new method X509::Name::parse.
-
-	* ext/openssl/ossl_digest.c: add ossl_digest_new().
-
-	* ext/openssl/ossl_digest.h: ditto.
-
-	* ext/openssl/ossl_cipher.c: add ossl_cipher_new().
-
-	* ext/openssl/ossl_cipher.h: ditto.
-
-Fri Sep  5 15:32:04 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-font-lock-maybe-here-docs): should not
-	  search delimiter forward if found in backward.
-
-Fri Sep  5 13:32:48 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/runner.rb: arguments should be keys.
-
-Fri Sep  5 12:09:55 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* test/ruby/test_system.rb (test_system): check existence of ruby
-	  interpreter.
-
-Fri Sep  5 11:32:17 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (--version): fix assignment/reference order.
-
-	* lib/optparse.rb (OptionParser#help): new; OptionParser#to_s may
-	  be deprecated in future.
-
-	* lib/optparse/version.rb (OptionParser#show_version): hide Object.
-
-	* test/runner.rb: fix optparse usage.
-
-	* test/runner.rb: glob all testsuits if no tests given.
-
-Fri Sep  5 10:42:58 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/runner.rb: added.  gets testcases from command line and runs it.
-
-	* test/ruby/test_gc.rb: remove useless part which was for dumping test
-	  result.
-
-Fri Sep  5 09:28:59 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_gc.rb: added.  splitter.rb which I made to split
-	  sample/test.rb into test/ruby/test_* kindly removed GC test (the
-	  last section in the original test) to reduce things to be worried.
-
-Fri Sep  5 03:00:04 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (test_block_in_arg): add no block
-	  given tests.
-
-	* test/ruby/test_iterator.rb (test_ljump): uncomment LocalJumpError
-	  test.
-
-Fri Sep  5 01:10:11 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby: tests for ruby itself.
-
-	* test/ruby/test_*.rb: split sample/test.rb into 28 test/unit testcases.
-	  some tests could not be translates...  search '!!' mark to see it.
-
-	* test/csv/test_csv.rb: should require 'csv', not '../lib/csv'.  test
-	  runner should set load path correctly.
-
-Fri Sep  5 01:03:59 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/csv/test_csv.rb: close opened files for CSV::IOBuf explicitly.
-	  opened file cannot be removed under win32 box.
-
-Thu Sep  4 23:59:40 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (tokadd_string): newlines have no special meanings in
-	  %w/%W, otherwise they are ignored only when interpolation is
-	  enabled.  [ruby-dev:21325]
-
-Thu Sep  4 19:38:25 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/io/wait/.cvsignore: added.
-
-	* ext/openssl/.cvsignore: added.
-
-Thu Sep  4 19:28:24 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* sample/openssl: added.  Sample of standard distribution library
-	  should be locate in sample/{module_name}/*.
-
-	* ext/openssl/sample/*: removed.  move to sample/openssl/*.
-
-Thu Sep  4 18:02:15 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/csv/test_csv.rb: use remove_const to reduce warnings.  use
-	  Dir.tmpdir to locate working files.
-
-Thu Sep  4 17:41:31 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-here-doc-beg-re): underscore also is
-	  valid delimiter.
-
-	* misc/ruby-mode.el (ruby-here-doc-end-match): must quote
-	  arbitrary string to use as regexp.
-
-	* misc/ruby-mode.el (ruby-font-lock-maybe-here-docs): must not
-	  call `ruby-here-doc-end-match' unless `ruby-here-doc-beg-re'
-	  matched.
-
-Thu Sep  4 15:40:07 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/csv/test_csv.rb: run on test/unit original layer.
-
-Thu Sep  4 12:54:50 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/token.c: headerless documents with root-level spacing now
-	  honored.
-
-Thu Sep  4 00:06:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (mark_frame_adj): need to adjust argv pointer if using
-	  system's alloca. [ruby-core:01503]
-
-Wed Sep  3 21:33:20 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test: add test directory.  Test::Unit aware testcases and needed
-	  files should be located in this directory.  dir/file name convention;
-	    test/{module_name}/test_{testcase_name}.rb
-	    test/{module_name}/{needed_files}
-	  someday, someone will write testrunner which searches test_*.rb and
-	  run testcases automatically.
-
-	* test/csv/*: add testcase for lib/csv.rb.
-
-Wed Sep  3 01:37:09 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_gets): should call next_argv() before type check
-	  current_file. [ruby-list:38336]
-
-Tue Sep  2 20:37:15 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/net/protocols.rb (SSLIO#ssl_connect): warning
-	  for skipping server verification.
-
-Tue Sep  2 23:36:57 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): should retrieve retval when pcall is true.
-
-Tue Sep  2 14:09:20 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/extconf.rb: check s6_addr8 in in6_addr (Tru64 UNIX).
-	  the patch is submitted by nmu <nmu@users.sourceforge.jp>.
-
-	* ext/socket/getaddrinfo.c (getaddrinfo): should use in6_addr8 on
-	  some platforms.
-
-	* ext/socket/getnameinfo.c (getnameinfo): ditto.
-
-Tue Sep  2 14:02:19 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_invoke): fixed bug on passing a exception
-
-	* ext/tk/lib/{tk.rb, tkcanvas.rb, tkfont.rb, tktext.rb}:
-	  bug fix and improvement of font control
-
-Tue Sep  2 09:51:36 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): should not handle exceptions within rescue
-	  argument.  [ruby-talk:80804]
-
-Tue Sep  2 00:44:37 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_memsearch): fix overrun.  [ruby-talk:80759]
-
-Tue Sep  2 00:41:27 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (map_charset): use lower case keys.
-
-	* ext/iconv/iconv.c (iconv_fail): just yield error and return the
-	  result if a block is given.
-
-	* ext/iconv/iconv.c (iconv_convert): yield error and append the
-	  result if a block is given.
-
-	* ext/iconv/charset_alias.rb (charset_alias): optional third
-	  argument.
-
-	* ext/iconv/charset_alias.rb (charset_alias): use CP932 instead of
-	  SHIFT_JIS on cygwin.
-
-Mon Sep  1 18:34:25 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval): make tail recursion in ELSE clause of
-	  RESCUE a jump.
-
-Mon Sep  1 18:00:02 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (aref_args): forgot to call NEW_SPLAT(). reported by
-	  Dave Butcher.
-
-	* eval.c (Init_Thread): protect thgroup_default.  suggested by Guy
-	  Decoux in [ruby-talk:80623]
-
-Mon Sep  1 16:59:10 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_thread_switch): add RESTORE_EXIT; exit by another
-	  thread termination.
-
-	* eval.c (rb_thread_start_0): should not error_print() within
-	  terminated thread, because $stderr used by it might be
-	  overriden now.  [ruby-dev:21280]
-
-Sun Aug 31 22:46:55 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* eval.c (TAG_DST()): take no argument.
-
-	* process.c (p_gid_sw_ensure): return VALUE.
-
-Sun Aug 31 22:27:10 2003  Hidetoshi NAGAI  <nagai@dumbo.ai.kyutech.ac.jp>
-
-	* process.c (p_gid_sw_ensure): lack of function type
-
-Sun Aug 31 12:25:06 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb: --version takes an optional argument; "all" or
-	  a list of package names.
-
-Sun Aug 31 10:17:02 2003  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: yyyy/mm is not an acceptable format.
-
-	* lib/time.rb: follow above.
-
-Sat Aug 30 14:25:43 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_iter_break): should not call TAG_JUMP directly.
-
-Sat Aug 30 03:58:21 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (struct BLOCK): remove BLOCKTAG, use scope instead.
-
-	* eval.c (POP_TAG): no longer propagate retval.  retval is now set
-	  directly by localjump_destination().
-
-	* eval.c (localjump_destination): new function to cast
-	  return/break local jump.
-
-	* eval.c (rb_yield_0): stop TAG_RETURN/TAG_BREAK escaping.
-
-Fri Aug 29 22:35:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* bigdecimal.c *.html: The 2nd arg. for add,sub,mult, and div is 0,
-	  then result will be the same as +,-,*,/ respectively.
-
-Fri Aug 29 17:30:15 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* process.c: bug fix
-
-	* process.c: add rb_secure(2) to methods of Process::{UID,GID,Sys}
-
-	* process.c: deny handling IDs during evaluating the block given to
-	  the Process::{UID,GID}.switch method
-
-	* ext/tcltklib/tcltklib.c: some methods have no effect if on slave-IP
-
-	* ext/tcltklib/tcltklib.c: can create a interpreter without Tk
-
-	* ext/tcltklib/tcltklib.c: bug fix on handling exceptions
-
-	* ext/tcltklib/MANUAL.euc: modify
-
-	* ext/tk/lib/tk.rb: freeze some core modules
-
-	* ext/tk/lib/multi-tk.rb: more secure
-
-	* ext/tk/lib/tk.rb: TkVariable.new(array) --> treat the array as the
-	  Tk's list
-
-	* ext/tk/lib/tk.rb: improve accessibility of TkVariable object
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tkfont.rb, ext/tk/lib/tkcanvas.rb,
-	  ext/tk/lib/tktext.rb: fix bug of font handling
-
-	* ext/tk/lib/tkfont.rb: TkFont.new() accepts compound fonts
-
-Thu Aug 28 22:07:12 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_autoload_load): call const_missing if autoloading
-	  constant is not defined to allow hook.
-
-	* eval.c (rb_eval): use rb_const_get_from() instead of
-	  rb_const_get_at().
-
-	* eval.c (is_defined): forgot to check NODE_COLON3.
-
-Thu Aug 28 17:30:24 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_get_0): should check constants defined in
-	  included modules, if klass is Object. [ruby-talk:79302]
-
-	* numeric.c (check_uint): check should be done using UINT_MAX, not
-	  INT_MAX. this fix is submitted by Lyle Johnson
-	  <lyle@knology.net> in [ruby-core:01486]
-
-Thu Aug 28 05:02:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (singleton): typo fixed (ruby-bugs-ja:PR#562)
-
-Thu Aug 28 02:37:45 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): *a = [1,2] now assigns [[1,2]] to a.
-	  consistent with *a = [1], which set [[1]] to a.
-
-	* node.h: merge NODE_RESTARY to NODE_SPLAT.
-
-	* parse.y: rules simplified a bit by removing NODE_RESTARY.
-
-	* sample/test.rb: updated for new assignment behavior.
-
-Wed Aug 27 22:33:24 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_bug): should not use other methods; this function is
-	  not for ordinary use.  [ruby-dev:21259]
-
-Wed Aug 27 15:07:57 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb (check_response): AUTH CRAM-MD5 returns 334
-	  response. [ruby-list:38279]
-
-Wed Aug 27 05:10:15 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (map_errno): support winsock error.
-
-	* win32/win32.c (pipe_exec, CreateChild, poll_child_status, waitpid,
-	  kill, link, rb_w32_rename, unixtime_to_filetime, rb_w32_utime):
-	  pass errno to map_errno().
-
-	* win32/win32.c (rb_w32_select, rb_w32_accept, rb_w32_bind,
-	  rb_w32_connect, rb_w32_getpeername, rb_w32_getsockname,
-	  rb_w32_getsockopt, rb_w32_ioctlsocket, rb_w32_listen, rb_w32_recv,
-	  rb_w32_recvfrom, rb_w32_send, rb_w32_sendto, rb_w32_setsockopt,
-	  rb_w32_shutdown, rb_w32_socket, rb_w32_gethostbyaddr,
-	  rb_w32_gethostbyname, rb_w32_gethostname, rb_w32_getprotobyname,
-	  rb_w32_getprotobynumber, rb_w32_getservbyname, rb_w32_getservbyport,
-	  rb_w32_fclose, rb_w32_close): use map_errno().
-
-	* win32/win32.h: add winsock errors.
-
-Tue Aug 26 23:53:23 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/ostruct.rb (OpenStruct::method_missing): prohibit modifying
-	  frozen OpenStruct. [ruby-talk:80214]
-
-Tue Aug 26 20:03:50 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): add the hook for source.
-	  [ruby-list:38122]
-
-Tue Aug 26 15:59:53 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* implicit.c (syck_type_id_to_taguri): corrected detection of
-	  x-private types.
-
-Sun Aug 24 01:02:48 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): performance improvement.
-	  [ruby-talk:79748]
-
-Sat Aug 23 23:41:16 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_expand_path): avoid calling rb_scan_args() for
-	  apparent cases. [ruby-talk:79748]
-
-Sat Aug 23 18:56:53 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_putchar): should use rb_str_resize() to just
-	  resize a string, rb_str_cat() disallows NULL.  [ruby-dev:21237]
-
-Sat Aug 23 16:48:41 2003  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb/ruby-lex.rb: bug fix for "foo" !~ /bar/. [ruby-talk:79942]
-
-Sat Aug 23 15:59:58 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_eval, rb_iterate, block_pass): reduce PUSH/POP_TAG and
-	  EXEC_TAG() for retry.  [ruby-dev:21216]
-
-Sat Aug 23 02:32:33 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_splat): should check if "values" is array.
-
-	* enum.c (each_with_index_i): typo.
-
-Fri Aug 22 17:07:05 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (inject_i): use rb_yield_values.
-
-	* enum.c (each_with_index_i): ditto.
-
-	* eval.c (rb_yield_splat): new function to call "yield *values".
-
-	* string.c (rb_str_scan): use rb_yield_splat().
-
-Fri Aug 22 06:13:22 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c: refactoring of the transfer method
-	  dispatch.  added yaml_org_handler for faster dispatch of
-	  transfers to base types.
-
-	* lib/yaml/rubytypes.rb: removed handling of builtins from
-	  Ruby library.
-
-	* ext/syck/token.c: quoted and block scalars are now implicit !str
-
-	* ext/syck/implicit.c: empty string detected as !null.
-
-Fri Aug 22 01:00:31 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (block_pass): improve passing current block.
-
-Fri Aug 22 00:13:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c: Int. overflow bug in multiplication
-	  fixed, and VpNmlz() speed up.
-
-Wed Aug 20 16:44:49 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): many systems seem to have
-	  a problem in select() after EINPROGRESS.  [ruby-list:38080]
-
-Wed Aug 20 01:31:17 2003  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/syck.h: Parser definition problems on HP-UX.
-	  [ruby-talk:79389]
-
-	* ext/syck/handler.c (syck_hdlr_get_anchor): Memory leak.
-
-	* ext/syck/syck.s (syck_io_file_read): Bad arguments to fread.
-
-	* ext/syck/rubyext.c: Tainting issues.
-
-Tue Aug 19 23:20:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c .h .html: to_s("+") implemented.
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb: E implemented.
-
-Tue Aug 19 07:47:09 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/ssl.rb: new file; SSL/TLS enhancement for GenericServer.
-
-	* lib/webrick/https.rb: SSLSocket handling is moved to webrick/ssl.rb.
-
-	* lib/webrick/compat.rb (File::fnmatch): remove old migration code.
-
-	* lib/webrick/httpserver.rb (HTTPServer#run): ditto.
-
-	* lib/webrick/server.rb (GenericServer#listen): the body of this
-	  method is pull out as Utils::create_lisnteners.
-
-	* lib/webrick/utils.rb (Utils::create_lisnteners): new method.
-
-	* lib/webrick/server.rb (GenericServer#start): should rescue
-	  unknown errors. and refine comments.
-
-	* ext/openssl/lib/openssl/ssl.rb (SSLServer#accept): should close
-	  socket if SSLSocket raises error.
-
-Tue Aug 19 11:19:33 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* io.c (next_argv): should not call GetOpenFile() if rb_stdout is
-	  not a IO (T_FILE).
-
-Tue Aug 19 07:47:09 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c: sync_close is moved to SSLSocket as
-	  a builtin.
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#close): ditto.
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#puts): should
-	  add a return to the tails of each line.
-
-	* ext/openssl/lib/openssl/ssl.rb: new class OpenSSL::SSL::SSLServer.
-
-	* ext/openssl/lib/net/protocols.rb (SSLIO#ssl_connect): use sync_close.
-
-	* ext/openssl/sample/echo_svr.rb: use SSLServer.
-
-	* ext/openssl/sample/echo_cli.rb: add example of SSLSocket#sync_close.
-
-Tue Aug 19 01:24:34 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/curses/curses.c (_XOPEN_SOURCE_EXTENDED): Mac OS X standard
-	  headers are inconsistent at this macro.  [ruby-core:01432]
-
-	* ext/curses/extconf.rb: check if _XOPEN_SOURCE_EXTENDED breaks.
-
-	* ext/tcltklib/stubs.c: Status macro in X11/Xthreads.h bothers
-	  winspool.h
-
-	* instruby.rb: make list at first instead of iterator.
-	  [ruby-talk:79347]
-
-Mon Aug 18 11:23:11 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (glob_helper): preserve raw order for **.
-
-Sun Aug 17 23:39:55 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/extconf.rb (HAVE_VA_ARGS_MACRO): need to compile.
-
-Sun Aug 17 17:10:03 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (SSLSocket#sync_close=): add a
-	  method to specify if the underlying IO will be closed in
-	  SSLSocket#close.
-
-	* ext/openssl/lib/openssl/buffering.rb: add forwarders to
-	  setsockopt, getsockopt and fcntl.
-
-	* ext/openssl/lib/net/protocols.rb: enable sync for SSLSocket.
-
-Sun Aug 17 11:32:04 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): should not force to remake Makefile when
-	  installation and so on.
-
-Sat Aug 16 23:58:18 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_symbol, w_object): get rid of warnings.
-
-	* re.c (rb_memsearch): ditto.
-
-	* time.c (time_dump): ditto.
-
-	* ext/extmk.rb (extmake): not continue making when extconf.rb
-	  failed.
-
-	* ext/openssl/extconf.rb: check __VA_ARGS__ macro more precisely.
-
-	* ext/openssl/ossl.h: remove version.h dependency.
-
-	* ext/openssl/ruby_missing.h: ditto.
-
-	* lib/mkmf.rb (pkg_config): use --libs output except with
-	  only-L for other options.  [ruby-list:38099]
-
-	* lib/mkmf.rb (create_makefile): separate rule for static
-	  library from shared object.
-
-	* win32/Makefile.sub, bcc32/Makefile.sub, wince/Makefile.sub:
-	  define exec_prefix and libdir.
-
-Fri Aug 15 23:15:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c .h: Bug in combination of limit & div
-	  method fixed.
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb: atan() & sqrt() added.
-
-Fri Aug 15 12:01:43 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (HUGE_ST_INO): check whether struct stat.st_ino
-	  is larger than long.  [ruby-dev:21194]
-	  http://www.geocities.co.jp/SiliconValley-PaloAlto/1409/ruby/beos.html
-
-	* error.c (syserr_eqq): errno might exceed Fixnum limit.
-
-	* error.c (Init_Exception): moved base initialization from
-	  init_syserr().
-
-	* inits.c (rb_call_inits): postpone initializing errnos until
-	  Bignum is available.
-
-Fri Aug 15 12:01:43 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/curses/curses.c (_XOPEN_SOURCE_EXTENDED): needed to let
-	  keyname() and so on be declared.
-
-	* ext/curses/curses.c (curses_resizeterm, window_resize):
-	  arguments conflicted with macros in term.h.
-
-	* ext/curses/curses.c (Curses module methods): ensure
-	  initialized.  [ruby-dev:21191]
-
-Fri Aug 15 02:08:53 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (id2ref): recycle check should be done by klass == 0.
-	  [ruby-core:01408]
-
-Fri Aug 15 01:34:23 2003  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* ext/openssl/ossl_pkey.c: move generate_cb here
-
-	* ext/openssl/ossl_pkey_{dh|dsa|rsa}.c: adapt to this cb
-
-	* ext/openssl/openssl_missing.[ch]: add (0.9.6x, x<j) missing BN funcs
-
-	* ext/openssl/ossl_bn.c: use supplied funcs from openssl_missing.c
-
-Fri Aug 15 00:38:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c: Bug in div method fixed.
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb: Newly added.
-
-	* ext/bigdecimal/sample/pi.rb: Changed so as to use math.rb.
-
-Thu Aug 14 21:19:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_Thread): Continuation#[] added.  [ruby-talk:79028]
-
-Thu Aug 14 20:03:34 2003  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (OLE_FREE): should not call
-	  ole_message_loop.
-
-	* ext/win32ole/win32ole.c (ole_event_free): ditto.
-
-	* ext/win32ole/win32ole.c (ole_initialize): stop calling
-	  OleUninitialize at exit.
-
-Thu Aug 14 11:27:37 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (rb_data_object_alloc): check type of 1st argument.
-	  [ruby-dev:21192]
-
-Thu Aug 14 00:21:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (mlhs_node): should allow "::Foo" (colon3) as lhs.
-
-	* parse.y (lhs): ditto.
-
-	* parse.y (yylex): should return tCOLON3 right after kCLASS.
-	  [ruby-talk:78918]
-
-	* error.c (exc_initialize): was converting argument to string too
-	  eagerly.  Only check was needed. [ruby-talk:78958]
-
-Wed Aug 13 23:31:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c .h .html: Ambiguity of
-	  BigDecimal::limit removed.
-
-Wed Aug 13 19:21:34 2003  Christian Neukirchen  <chneukirchen@yahoo.de>
-
-	* lib/webrick/https.rb (HTTPServer#run): should set syncing-mode
-	  to SSLSocket. [ruby-talk:78919]
-
-Wed Aug 13 18:13:49 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (POP_BLOCK): turn on BLOCK_LEFT flag when leaving block.
-
-	* eval.c (proc_invoke): unpack return/break destination when block
-	  is already left.
-
-Wed Aug 13 15:58:31 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* object.c (rb_class_s_alloc): add function prototype to avoid VC++
-	  warning.
-
-Wed Aug 13 13:50:59 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): should pass some
-	  class to first argument of Data_Wrap_Struct(). (ruby-bugs:PR#1109)
-
-Tue Aug 12 16:55:11 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in: static link libraries to LIBRUBY_SO with static linked
-	  ext.  [ruby-dev:21157]
-
-	* ext/extmk.rb (extmake): sort extension library initialization order.
-
-	* ext/extmk.rb (extmake): compact $extlibs.
-
-Tue Aug 12 02:48:56 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (THREAD_SAVE_CONTEXT): should explicitly turn off the
-	  flag before calling getcontext(2).
-
-	* eval.c (struct thread): add member to save backing store on
-	  IA64. (ruby-bugs PR1086)
-
-	* eval.c (thread_mark): mark IA64 backing store region.
-
-	* eval.c (thread_free): free saved IA64 backing store.
-
-	* eval.c (rb_thread_save_context): save IA64 backing store as well.
-
-	* eval.c (rb_thread_restore_context): restore IA64 backing store.
-
-	* eval.c (THREAD_ALLOC): initialize IA64 members.
-
-Mon Aug 11 22:31:50 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/debug.rb(debug_command): inspection command should inspect
-	  resulting value even if it's nil.  [ruby-dev:21180] by OMAE, jun
-	  <jun66j5@ybb.ne.jp>.
-
-	* lib/debug.rb(debug_command): incomplete regexp.
-
-Mon Aug 11 17:33:07 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call_super): do not use rb_block_given_p() for
-	  check. [ruby-talk:78656]
-
-	* eval.c (BEGIN_CALLARGS): push ITER_NOT only when ITER_PRE.
-
-Sun Aug 10 10:43:05 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/buffering.rb: increase BLOCK_SIZE
-	  from 1k to 16k bytes. [ruby-talk:78603]
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_s_alloc): enable
-	  partial write to allow interruption in SSLSocket#write.
-
-Sun Aug 10 00:34:16 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* cygwin/GNUmakefile: remove unnecessary '--drive-name=$(CC)'
-	  for ccache.
-
-Sat Aug  9 10:36:21 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): do not dump generic instance variable when
-	  marshal_dump is defined.
-
-Sat Aug  9 00:35:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal.c: F style output(like 1234.56789) implemented
-	  to to_s method.
-	* ext/bigdecimal_??.html: F style output(like 1234.56789)
-	  implemented to to_s method.
-
-Fri Aug  8 12:33:17 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* bcc32/Makefile.sub: rubyw.exe should be a Windows GUI program.
-	  add the -aa option to WLDFLAGS.
-
-Fri Aug  8 11:29:26 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* marshal.c (w_object): should set `c_arg' at first.
-
-Fri Aug  8 03:22:28 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httputils.rb (FormData#list): should not take
-	  a side effect for the receiver.
-
-Thu Aug  7 14:40:37 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* cygwin/GNUmakefile: better --disbale-shared option support.
-
-	* cygwin/GNUmakefile: add forwarding DLL target for cygwin.
-
-Thu Aug  7 14:21:05 2003  Corinna Vinschen  <vinschen@redhat.com>
-
-	* configure.in: Fix Cygwin specific naming of libraries to
-	  be net distribution compliant. (ruby-bugs:PR#1077)
-	  cygwin-ruby18.dll -> cygruby18.dll
-
-Thu Aug  7 12:51:38 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_at_exit): should not be called without a block.
-	  block_given check added.
-
-Thu Aug  7 06:46:06 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): forgot to pop ruby_class.
-
-	* eval.c (rb_call0): update ruby_class as well as ruby_cref.
-	  (ruby-bugs-ja:PR#540)
-
-Thu Aug  7 04:52:50 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): remove ruby_frame->cbase and unify to
-	  ruby_cref.  [ruby-talk:78141]
-
-Thu Aug  7 04:19:15 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* gc.c: FreeBSD/ia64's mcontext_t is a bit different from that of
-	  Linux/ia64.  This makes gc.c compile but miniruby coredumps for
-	  the moment.
-
-Thu Aug  7 00:15:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
-
-	* ext/bigdecimal.c: Comparison results adjusted to Float's.
-	* ext/bigdecimal.c: Use rb_num_coerce_????(x,y) instead of own.
-
-Wed Aug  6 22:58:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/testcase.rb: Added equality checking.
-	* lib/test/unit/testsuite.rb: Added equality checking.
-	* lib/test/unit/assertions.rb: Fixed a warning.
-
-Wed Aug  6 17:28:10 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): pass LIBPATH to make ruby.  [ruby-dev:21137]
-
-	* ext/extmk.rb (extmake): set library name as source file name in
-	  Init_ext().  [ruby-dev:21137]
-
-	* lib/mkmf.rb (Logging::postpone): postpone logging messages after
-	  heading message as the result of the block.
-
-	* lib/mkmf.rb (macro_defined?): append newline to src unless ended
-	  with it.
-
-	* lib/mkmf.rb (have_library): treat nil function name as "main".
-	  (ruby-bugs:PR#1083)
-
-	* lib/mkmf.rb (pkg_config): should append additional libraries to
-	  $libs but not $LIBS.  [ruby-dev:21137]
-
-	* ext/io/wait/extconf.rb: check DOSISH macro instead of platform.
-
-	* ext/digest/sha1/extconf.rb: have_library already appends library
-	  name.
-
-Wed Aug  6 17:23:57 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c: initialize /* OK */ variables by Qnil to stop warnings.
-
-Wed Aug  6 04:58:32 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/Setup*: add io/wait and openssl.
-
-Wed Aug  6 01:13:38 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_autoload): use ruby_cbase instead of ruby_class.
-
-	* eval.c (rb_f_autoload_p): ditto.
-
-	* class.c (rb_mod_init_copy): no longer implements independent
-	  clone and dup methods.  override "initialize_copy" instead.
-	  [ruby-core:01352]
-
-	* object.c (rb_class_s_alloc): define Class allocation function.
-	  this makes Classes to follow clone framework that uses
-	  initialize_copy.
-
-	* object.c (rb_class_initialize): separate instantiation and
-	  initialization.
-
-	* object.c (rb_obj_alloc): prohibit instantiation from
-	  uninitialized class.
-
-	* object.c (rb_class_superclass): check uninitialized class.
-
-	* array.c (rb_ary_fill): wrong index processing with block.  this
-	  fix was done by Koji Arai <JCA02266@nifty.ne.jp> [ruby-list:38029]
-
-	* marshal.c (w_object): should preserve generic ivar for nil,
-	  true, false, symbols, and fixnums.
-
-	* marshal.c (w_uclass): base_klass check should be done after
-	  rb_class_real().
-
-Wed Aug  6 01:18:50 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: update document.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/protocol.rb: ditto.
-
-Wed Aug  6 00:48:37 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* marshal.c (w_object): should recommend marshal_dump rather than
-	  _dump_data.
-
-Tue Aug  5 17:58:57 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/fileutils.rb (install): should preserve timestamp only.
-
-Tue Aug  5 17:31:59 2003  Ian Macdonald  <ian@caliban.org>
-
-	* lib/shell/command-processor.rb (Shell::CommandProcessor::rmdir):
-	  simple typo.
-
-Tue Aug  5 15:47:34 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_load): should preserve current source file/line.
-
-Tue Aug  5 10:04:42 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_new4): ptr may refer null_str.
-
-Mon Aug  4 17:25:18 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* stable version 1.8.0 released.
-
-For the changes before 1.8.0, see doc/ChangeLog-1.8.0
-
-Local variables:
-add-log-time-format: (lambda ()
-  (let* ((time (current-time))
-	 (system-time-locale "C")
-	 (diff (+ (cadr time) 32400))
-	 (lo (% diff 65536))
-	 (hi (+ (car time) (/ diff 65536))))
-  (format-time-string "%a %b %e %H:%M:%S %Y" (list hi lo) t)))
-indent-tabs-mode: t
-tab-width: 8
-end:
diff --git a/GPL b/GPL
index 5b6e7c66c2..d159169d10 100644
--- a/GPL
+++ b/GPL
@@ -1,12 +1,12 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
-			    Preamble
+                            Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -15,7 +15,7 @@ software--to make sure the software is free for all its users.  This
 General Public License applies to most of the Free Software
 Foundation's software and to any other program whose authors commit to
 using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
+the GNU Lesser General Public License instead.)  You can apply it to
 your programs, too.
 
   When we speak of free software, we are referring to freedom, not
@@ -55,8 +55,8 @@ patent must be licensed for everyone's free use or not licensed at all.
 
   The precise terms and conditions for copying, distribution and
 modification follow.
-
-		    GNU GENERAL PUBLIC LICENSE
+
+                    GNU GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
   0. This License applies to any program or other work which contains
@@ -110,7 +110,7 @@ above, provided that you also meet all of these conditions:
     License.  (Exception: if the Program itself is interactive but
     does not normally print such an announcement, your work based on
     the Program is not required to print an announcement.)
-
+
 These requirements apply to the modified work as a whole.  If
 identifiable sections of that work are not derived from the Program,
 and can be reasonably considered independent and separate works in
@@ -168,7 +168,7 @@ access to copy from a designated place, then offering equivalent
 access to copy the source code from the same place counts as
 distribution of the source code, even though third parties are not
 compelled to copy the source along with the object code.
-
+
   4. You may not copy, modify, sublicense, or distribute the Program
 except as expressly provided under this License.  Any attempt
 otherwise to copy, modify, sublicense or distribute the Program is
@@ -225,7 +225,7 @@ impose that choice.
 
 This section is intended to make thoroughly clear what is believed to
 be a consequence of the rest of this License.
-
+
   8. If the distribution and/or use of the Program is restricted in
 certain countries either by patents or by copyrighted interfaces, the
 original copyright holder who places the Program under this License
@@ -255,7 +255,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.
 
-			    NO WARRANTY
+                            NO WARRANTY
 
   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.
 
-		     END OF TERMS AND CONDITIONS
-
-	    How to Apply These Terms to Your New Programs
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
 
   If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
@@ -303,10 +303,9 @@ the "copyright" line and a pointer to where the full notice is found.
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -336,5 +335,5 @@ necessary.  Here is a sample; alter the names:
 This General Public License does not permit incorporating your program into
 proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
+library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
diff --git a/KNOWNBUGS.rb b/KNOWNBUGS.rb
index 39dc6a9b8b..35a8e75876 100644
--- a/KNOWNBUGS.rb
+++ b/KNOWNBUGS.rb
@@ -1,4 +1,7 @@
 #
-# This test file concludes tests which point out known bugs.
+# IMPORTANT: Always keep the first 7 lines (comments),
+# even if this file is otherwise empty.
+#
+# This test file includes tests which point out known bugs.
 # So all tests will cause failure.
 #
diff --git a/LEGAL b/LEGAL
index 7a7e825510..2a7964e771 100644
--- a/LEGAL
+++ b/LEGAL
@@ -1,86 +1,342 @@
-LEGAL NOTICE INFORMATION
-------------------------
+# -*- rdoc -*-
+
+= LEGAL NOTICE INFORMATION
+--------------------------
 
 All the files in this distribution are covered under either the Ruby's
 license (see the file COPYING) or public-domain except some files
 mentioned below.
 
-include/ruby/oniguruma.h:
-regcomp.c:
-regenc.[ch]:
-regerror.c:
-regexec.c:
-regint.h:
-regparse.[ch]:
-enc/ascii.c
-enc/big5.c
-enc/cp949.c
-enc/emacs_mule.c
-enc/encdb.c
-enc/euc_jp.c
-enc/euc_kr.c
-enc/euc_tw.c
-enc/gb18030.c
-enc/gb2312.c
-enc/gbk.c
-enc/iso_8859_1.c
-enc/iso_8859_10.c
-enc/iso_8859_11.c
-enc/iso_8859_13.c
-enc/iso_8859_14.c
-enc/iso_8859_15.c
-enc/iso_8859_16.c
-enc/iso_8859_2.c
-enc/iso_8859_3.c
-enc/iso_8859_4.c
-enc/iso_8859_5.c
-enc/iso_8859_6.c
-enc/iso_8859_7.c
-enc/iso_8859_8.c
-enc/iso_8859_9.c
-enc/koi8_r.c
-enc/koi8_u.c
-enc/shift_jis.c
-enc/unicode.c
-enc/us_ascii.c
-enc/utf_16be.c
-enc/utf_16le.c
-enc/utf_32be.c
-enc/utf_32le.c
-enc/utf_8.c
-enc/windows_1251.c
-
-Oniguruma  ----   (C) K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
-
-http://www.geocities.jp/kosako3/oniguruma/
-http://www.ruby-lang.org/cgi-bin/cvsweb.cgi/oniguruma/
-http://www.freebsd.org/cgi/cvsweb.cgi/ports/devel/oniguruma/
-
-   When this software is partly used or it is distributed with Ruby, 
-   this of Ruby follows the license of Ruby.
-
-configure:
+[addr2line.c]
+
+  A part of this file is from FreeBSD.
+
+  >>>
+    Copyright (c) 1986, 1988, 1991, 1993::
+    The Regents of the University of California.  All rights reserved.
+
+    (c) UNIX System Laboratories, Inc.
+
+    All or some portions of this file are derived from material licensed
+    to the University of California by American Telephone and Telegraph
+    Co. or Unix System Laboratories, Inc. and are reproduced herein with
+    the permission of UNIX System Laboratories, Inc.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+    4. Neither the name of the University nor the names of its contributors
+       may be used to endorse or promote products derived from this software
+       without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+	@(#)subr_prf.c	8.3 (Berkeley) 1/21/94
+
+
+[ccan/build_assert/build_assert.h]
+[ccan/check_type/check_type.h]
+[ccan/container_of/container_of.h]
+[ccan/str/str.h]
+
+  These files are licensed under the {CC0}[https://creativecommons.org/choose/zero/].
+
+[ccan/list/list.h]
+
+  This file is licensed under the {MIT License}[rdoc-label:label-MIT+License].
+
+[coroutine]
+
+  Unless otherwise specified, these files are licensed under the
+  {MIT License}[rdoc-label:label-MIT+License].
+
+[include/ruby/onigmo.h]
+[include/ruby/oniguruma.h]
+[regcomp.c]
+[regenc.c]
+[regenc.h]
+[regerror.c]
+[regexec.c]
+[regint.h]
+[regparse.c]
+[regparse.h]
+[enc/ascii.c]
+[enc/big5.c]
+[enc/cp949.c]
+[enc/emacs_mule.c]
+[enc/encdb.c]
+[enc/euc_jp.c]
+[enc/euc_kr.c]
+[enc/euc_tw.c]
+[enc/gb18030.c]
+[enc/gb2312.c]
+[enc/gbk.c]
+[enc/iso_8859_1.c]
+[enc/iso_8859_10.c]
+[enc/iso_8859_11.c]
+[enc/iso_8859_13.c]
+[enc/iso_8859_14.c]
+[enc/iso_8859_15.c]
+[enc/iso_8859_16.c]
+[enc/iso_8859_2.c]
+[enc/iso_8859_3.c]
+[enc/iso_8859_4.c]
+[enc/iso_8859_5.c]
+[enc/iso_8859_6.c]
+[enc/iso_8859_7.c]
+[enc/iso_8859_8.c]
+[enc/iso_8859_9.c]
+[enc/koi8_r.c]
+[enc/koi8_u.c]
+[enc/shift_jis.c]
+[enc/unicode.c]
+[enc/us_ascii.c]
+[enc/utf_16be.c]
+[enc/utf_16le.c]
+[enc/utf_32be.c]
+[enc/utf_32le.c]
+[enc/utf_8.c]
+[enc/windows_1251.c]
+[enc/windows_31j.c]
+
+  Onigmo (Oniguruma-mod) LICENSE
+
+  >>>
+    Copyright (c) 2002-2009::  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
+    Copyright (c) 2011-2014::  K.Takata  <kentkt AT csc DOT jp>
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+  Oniguruma LICENSE
+
+  >>>
+    Copyright (c) 2002-2009::  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+  * https://github.com/k-takata/Onigmo/
+  * https://github.com/kkos/oniguruma
+  * https://svnweb.freebsd.org/ports/head/devel/oniguruma/
+
+    When this software is partly used or it is distributed with Ruby,
+    this of Ruby follows the license of Ruby.
+
+[enc/windows_1250.c]
+[enc/windows_1252.c]
+
+  >>>
+    Copyright (c) 2006-2007::  Byte      <byte AT mail DOT kna DOT ru>
+                               K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+[enc/cesu_8.c]
+[enc/windows_1253.c]
+[enc/windows_1254.c]
+[enc/windows_1257.c]
+
+  >>>
+    Copyright (c) 2002-2007::  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+[enc/trans/GB/GB12345%UCS.src]
+[enc/trans/GB/UCS%GB12345.src]
+[enc/trans/GB/GB2312%UCS.src]
+[enc/trans/GB/UCS%GB2312.src]
+
+  These files have this explanatory texts.
+
+  >>>
+    This mapping data was created from files provided by Unicode, Inc.
+    (The Unicode Consortium). The files were used to create a product supporting
+    Unicode, as explicitly permitted in the files' copyright notices.
+    Please note that Unicode, Inc. never made any claims as to fitness of these
+    files for any particular purpose, and has ceased to publish the files many
+    years ago.
+
+[enc/trans/JIS/JISX0201-KANA%UCS.src]
+[enc/trans/JIS/JISX0208\@1990%UCS.src]
+[enc/trans/JIS/JISX0212%UCS.src]
+[enc/trans/JIS/UCS%JISX0201-KANA.src]
+[enc/trans/JIS/UCS%JISX0208@1990.src]
+[enc/trans/JIS/UCS%JISX0212.src]
+
+  These files are copyrighted as the following.
+
+  >>>
+    © 2015 Unicode®, Inc.
+
+    For terms of use, see http://www.unicode.org/terms_of_use.html
+
+[enc/trans/JIS/JISX0213-1%UCS@BMP.src]
+[enc/trans/JIS/JISX0213-1%UCS@SIP.src]
+[enc/trans/JIS/JISX0213-2%UCS@BMP.src]
+[enc/trans/JIS/JISX0213-2%UCS@SIP.src]
+
+  These files are copyrighted as the following.
+
+  >>>
+    Copyright (C) 2001:: earthian@tama.or.jp, All Rights Reserved.
+    Copyright (C) 2001:: I'O, All Rights Reserved.
+    Copyright (C) 2006:: Project X0213, All Rights Reserved.
+    You can use, modify, distribute this table freely.
+
+[enc/trans/JIS/UCS@BMP%JISX0213-1.src]
+[enc/trans/JIS/UCS@BMP%JISX0213-2.src]
+[enc/trans/JIS/UCS@SIP%JISX0213-1.src]
+[enc/trans/JIS/UCS@SIP%JISX0213-2.src]
+
+  These files are copyrighted as the following.
+
+  >>>
+    Copyright (C) 2001:: earthian@tama.or.jp, All Rights Reserved.
+    Copyright (C) 2001:: I'O, All Rights Reserved.
+    You can use, modify, distribute this table freely.
+
+[enc/trans/ucm/glibc-BIG5-2.3.3.ucm]
+[enc/trans/ucm/glibc-BIG5HKSCS-2.3.3.ucm]
+
+  >>>
+    Copyright (C) 2001-2005:: International Business Machines
+                              Corporation and others.  All Rights Reserved.
+
+[enc/trans/ucm/windows-950-2000.ucm]
+[enc/trans/ucm/windows-950_hkscs-2001.ucm]
+
+  >>>
+    Copyright (C) 2001-2002:: International Business Machines
+                              Corporation and others.  All Rights Reserved.
+
+
+[configure]
 
   This file is free software.
 
-    Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
+  >>>
+    Copyright (C) 1992-1996, 1998-2012:: Free Software Foundation, Inc.
 
     This configure script is free software; the Free Software Foundation
     gives unlimited permission to copy, distribute and modify it.
 
-config.guess:
-config.sub:
-parse.c:
+[aclocal.m4]
+
+  This file is free software.
+
+  >>>
+    Copyright (C) 1996-2020:: Free Software Foundation, Inc.
+
+    This file is free software; the Free Software Foundation
+    gives unlimited permission to copy and/or distribute it,
+    with or without modifications, as long as this notice is preserved.
+
+[tool/config.guess]
+[tool/config.sub]
 
   As long as you distribute these files with the file configure, they
   are covered under the Ruby's license.
 
-      Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
-      Free Software Foundation, Inc.
+  >>>
+    Copyright 1992-2018:: Free Software Foundation, Inc.
 
     This file is free software; you can redistribute it and/or modify it
     under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
+    the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful, but
@@ -89,17 +345,57 @@ parse.c:
     General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+    along with this program; if not, see <https://www.gnu.org/licenses/>.
 
     As a special exception to the GNU General Public License, if you
     distribute this file as part of a program that contains a
     configuration script generated by Autoconf, you may include it under
-    the same distribution terms that you use for the rest of that program.
+    the same distribution terms that you use for the rest of that
+    program.  This Exception is an additional permission under section 7
+    of the GNU General Public License, version 3 ("GPLv3").
 
-util.c (partly):
+[parse.c]
+[parse.h]
 
-    Copyright (c) 1991, 2000, 2001 by Lucent Technologies.
+  These files are licensed under the GPL, but are incorporated into Ruby and
+  redistributed under the terms of the Ruby license, as permitted by the
+  exception to the GPL below.
+
+  >>>
+    Copyright (C) 1984, 1989-1990, 2000-2015, 2018:: Free Software Foundation, Inc.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+    As a special exception, you may create a larger work that contains
+    part or all of the Bison parser skeleton and distribute that work
+    under terms of your choice, so long as that work isn't itself a
+    parser generator using the skeleton or a modified version thereof
+    as a parser skeleton.  Alternatively, if you modify or redistribute
+    the parser skeleton itself, you may (at your option) remove this
+    special exception, which will cause the skeleton and the resulting
+    Bison output files to be licensed under the GNU General Public
+    License without this special exception.
+
+    This special exception was added by the Free Software Foundation in
+    version 2.2 of Bison.
+
+[missing/dtoa.c]
+
+  This file is under these licenses.
+
+  >>>
+    Copyright (c) 1991, 2000, 2001:: by Lucent Technologies.
 
     Permission to use, copy, modify, and distribute this software for any
     purpose without fee is hereby granted, provided that this entire notice
@@ -112,46 +408,73 @@ util.c (partly):
     REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
     OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
 
-util.c (partly):
-win32/win32.[ch]:
+  >>>
+    Copyright (c) 2004-2008:: David Schultz <das@FreeBSD.ORG>
+                              All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+[win32/win32.c]
+[include/ruby/win32.h]
 
   You can apply the Artistic License to these files. (or GPL,
   alternatively)
 
-    Copyright (c) 1993, Intergraph Corporation
+  >>>
+    Copyright (c) 1993:: Intergraph Corporation
 
     You may distribute under the terms of either the GNU General Public
     License or the Artistic License, as specified in the perl README file.
 
-random.c
+[missing/mt19937.c]
 
   This file is under the new-style BSD license.
 
-    A C-program for MT19937, with initialization improved 2002/2/10.
-    Coded by Takuji Nishimura and Makoto Matsumoto.
+  >>>
+    A C-program for MT19937, with initialization improved 2002/2/10.::
+    Coded by Takuji Nishimura and Makoto Matsumoto.  
     This is a faster version by taking Shawn Cokus's optimization,
     Matthe Bellew's simplification, Isaku Wada's real version.
 
-    Before using, initialize the state by using init_genrand(seed) 
+    Before using, initialize the state by using init_genrand(seed)
     or init_by_array(init_key, key_length).
 
-    Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
-    All rights reserved.                          
+    Copyright (C) 1997 - 2002:: Makoto Matsumoto and Takuji Nishimura,
+                                All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
     are met:
 
-      1. Redistributions of source code must retain the above copyright
-	 notice, this list of conditions and the following disclaimer.
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
 
-      2. Redistributions in binary form must reproduce the above copyright
-	 notice, this list of conditions and the following disclaimer in the
-	 documentation and/or other materials provided with the distribution.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
 
-      3. The names of its contributors may not be used to endorse or promote 
-	 products derived from this software without specific prior written 
-	 permission.
+    3. The names of its contributors may not be used to endorse or promote
+       products derived from this software without specific prior written
+       permission.
 
     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
@@ -170,36 +493,15 @@ random.c
     http://www.math.keio.ac.jp/matumoto/emt.html
     email: matumoto@math.keio.ac.jp
 
-st.[ch]:
-missing/alloca.c:
-missing/dup2.c:
-missing/finite.c:
-missing/hypot.c:
-missing/isinf.c:
-missing/isnan.c:
-missing/memcmp.c:
-missing/memmove.c:
-missing/strchr.c:
-missing/strstr.c:
-missing/strtol.c:
-ext/digest/sha1/sha1.[ch]:
-
-  These files are all under public domain.
+  The Wayback Machine url: http://web.archive.org/web/19990429082237/http://www.math.keio.ac.jp/matumoto/emt.html
 
-missing/erf.c:
-missing/tgamma.c:
-missing/lgamma_r.c:
-missing/crypt.c:
-missing/vsnprintf.c:
+[missing/procstat_vm.c]
 
-  This file is under the old-style BSD license.  Note that the
-  paragraph 3 below is now null and void.
-
-    Copyright (c) 1990, 1993
-         The Regents of the University of California.  All rights reserved.
+  This file is under the new-style BSD license.
 
-    This code is derived from software contributed to Berkeley by
-    Chris Torek.
+  >>>
+    Copyright (c) 2007:: Robert N. M. Watson
+                         All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
@@ -209,14 +511,11 @@ missing/vsnprintf.c:
     2. Redistributions in binary form must reproduce the above copyright
        notice, this list of conditions and the following disclaimer in the
        documentation and/or other materials provided with the distribution.
-    3. Neither the name of the University nor the names of its contributors
-       may be used to endorse or promote products derived from this software
-       without specific prior written permission.
 
-    THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-    ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
@@ -225,58 +524,104 @@ missing/vsnprintf.c:
     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     SUCH DAMAGE.
 
-    IMPORTANT NOTE:
-    --------------
-    From ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
-    paragraph 3 above is now null and void.
+    $FreeBSD: head/usr.bin/procstat/procstat_vm.c 261780 2014-02-11 21:57:37Z jhb $
 
-missing/strlcat.c
-missing/strlcpy.c
+[vsnprintf.c]
 
-  These files are under the new-style BSD license.
+  This file is under the {old-style BSD license}[rdoc-label:label-Old-style+BSD+license].
+
+  >>>
+    Copyright (c) 1990, 1993::
+    The Regents of the University of California.  All rights reserved.
+
+    This code is derived from software contributed to Berkeley by
+    Chris Torek.
+
+[st.c]
+[strftime.c]
+[include/ruby/st.h]
+[missing/acosh.c]
+[missing/alloca.c]
+[missing/dup2.c]
+[missing/erf.c]
+[missing/finite.c]
+[missing/hypot.c]
+[missing/isinf.c]
+[missing/isnan.c]
+[missing/lgamma_r.c]
+[missing/memcmp.c]
+[missing/memmove.c]
+[missing/strchr.c]
+[missing/strerror.c]
+[missing/strstr.c]
+[missing/tgamma.c]
+[ext/date/date_strftime.c]
+[ext/digest/sha1/sha1.c]
+[ext/digest/sha1/sha1.h]
+
+  These files are all under public domain.
+
+[missing/crypt.c]
+
+  This file is under the {old-style BSD license}[rdoc-label:label-Old-style+BSD+license].
+
+  >>>
+    Copyright (c) 1989, 1993::
+    The Regents of the University of California.  All rights reserved.
+
+    This code is derived from software contributed to Berkeley by
+    Tom Truscott.
+
+[missing/setproctitle.c]
+
+  This file is under the {old-style BSD license}[rdoc-label:label-Old-style+BSD+license].
 
-   Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions
-   are met:
-   1. Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-   2. Redistributions in binary form must reproduce the above copyright
-      notice, this list of conditions and the following disclaimer in the
-      documentation and/or other materials provided with the distribution.
-   3. The name of the author may not be used to endorse or promote products
-      derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
-   INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
-   AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
-   THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-   OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
-   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-   ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-missing/langinfo.c
+  >>>
+    Copyright 2003:: Damien Miller
+    Copyright (c) 1983, 1995-1997:: Eric P. Allman
+    Copyright (c) 1988, 1993::
+    The Regents of the University of California.  All rights reserved.
+
+[missing/strlcat.c]
+[missing/strlcpy.c]
+
+  These files are under an ISC-style license.
+
+  >>>
+    Copyright (c) 1998, 2015:: Todd C. Miller <Todd.Miller@courtesan.com>
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+[missing/langinfo.c]
 
   This file is from http://www.cl.cam.ac.uk/~mgk25/ucs/langinfo.c.
   Ruby uses a modified version. The file contains the following
   author/copyright notice:
 
-  Markus.Kuhn@cl.cam.ac.uk -- 2002-03-11
-  Permission to use, copy, modify, and distribute this software
-  for any purpose and without fee is hereby granted. The author
-  disclaims all warranties with regard to this software.
+  >>>
+    Markus.Kuhn@cl.cam.ac.uk -- 2002-03-11::
+    Permission to use, copy, modify, and distribute this software
+    for any purpose and without fee is hereby granted. The author
+    disclaims all warranties with regard to this software.
 
-ext/digest/md5/md5.[ch]:
+[ext/digest/md5/md5.c]
+[ext/digest/md5/md5.h]
 
   These files are under the following license.  Ruby uses modified
   versions of them.
 
-    Copyright (C) 1999, 2000 Aladdin Enterprises.  All rights reserved.
+  >>>
+    Copyright (C) 1999, 2000:: Aladdin Enterprises.  All rights reserved.
 
     This software is provided 'as-is', without any express or implied
     warranty.  In no event will the authors be held liable for any damages
@@ -297,23 +642,27 @@ ext/digest/md5/md5.[ch]:
     L. Peter Deutsch
     ghost@aladdin.com
 
-ext/digest/rmd160/rmd160.[ch]:
+[ext/digest/rmd160/rmd160.c]
+[ext/digest/rmd160/rmd160.h]
 
   These files have the following copyright information, and by the
   author we are allowed to use it under the new-style BSD license.
 
-    AUTHOR:   Antoon Bosselaers, ESAT-COSIC
+  >>>
+    AUTHOR::  Antoon Bosselaers, ESAT-COSIC
               (Arranged for libc by Todd C. Miller)
-    DATE:     1 March 1996
+    DATE::    1 March 1996
 
-    Copyright (c) Katholieke Universiteit Leuven
+    Copyright (c):: Katholieke Universiteit Leuven
     1996, All Rights Reserved
 
-ext/digest/sha2/sha2.[ch]:
+[ext/digest/sha2/sha2.c]
+[ext/digest/sha2/sha2.h]
 
   These files are under the new-style BSD license.
 
-    Copyright 2000 Aaron D. Gifford.  All rights reserved.
+  >>>
+    Copyright 2000:: Aaron D. Gifford.  All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
@@ -339,29 +688,123 @@ ext/digest/sha2/sha2.[ch]:
     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     SUCH DAMAGE.
 
-ext/nkf/nkf-utf8/config.h:
-ext/nkf/nkf-utf8/nkf.c:
-ext/nkf/nkf-utf8/utf8tbl.c:
+[ext/json/generator/generator.c]
+
+  The file contains the following copyright notice.
+
+  >>>
+    Copyright 2001-2004:: Unicode, Inc.
+
+    Disclaimer::
+
+      This source code is provided as is by Unicode, Inc. No claims are
+      made as to fitness for any particular purpose. No warranties of any
+      kind are expressed or implied. The recipient agrees to determine
+      applicability of information provided. If this file has been
+      purchased on magnetic or optical media from Unicode, Inc., the
+      sole remedy for any claim will be exchange of defective media
+      within 90 days of receipt.
+
+    Limitations on Rights to Redistribute This Code::
+
+      Unicode, Inc. hereby grants the right to freely use the information
+      supplied in this file in the creation of products supporting the
+      Unicode Standard, and to make copies of this file in any form
+      for internal or external distribution as long as this notice
+      remains attached.
+
+[ext/nkf/nkf-utf8/config.h]
+[ext/nkf/nkf-utf8/nkf.c]
+[ext/nkf/nkf-utf8/utf8tbl.c]
 
   These files are under the following license.  So to speak, it is
   copyrighted semi-public-domain software.
 
-    Copyright (C) 1987, Fujitsu LTD. (Itaru ICHIKAWA)
-       Everyone is permitted to do anything on this program 
-       including copying, modifying, improving,
-       as long as you don't try to pretend that you wrote it.
-       i.e., the above copyright notice has to appear in all copies.
-       Binary distribution requires original version messages.
-       You don't have to ask before copying, redistribution or publishing.
-       THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE.
+  >>>
+    Copyright (C) 1987:: Fujitsu LTD. (Itaru ICHIKAWA)
+
+    Everyone is permitted to do anything on this program
+    including copying, modifying, improving,
+    as long as you don't try to pretend that you wrote it.
+    i.e., the above copyright notice has to appear in all copies.
+    Binary distribution requires original version messages.
+    You don't have to ask before copying, redistribution or publishing.
+    THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE.
 
-ext/socket/addrinfo.h:
-ext/socket/getaddrinfo.c:
-ext/socket/getnameinfo.c:
+[ext/psych]
+[test/psych]
+
+  The files under these directories are under the following license, except for
+  ext/psych/yaml.
+
+  >>>
+    Copyright 2009:: Aaron Patterson, et al.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy of
+    this software and associated documentation files (the 'Software'), to deal in
+    the Software without restriction, including without limitation the rights to
+    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is furnished to do
+    so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+
+[ext/psych/yaml]
+
+  The files under this directory are under the following license.
+
+  >>>
+    Copyright (c) 2006:: Kirill Simonov
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy of
+    this software and associated documentation files (the "Software"), to deal in
+    the Software without restriction, including without limitation the rights to
+    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is furnished to do
+    so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+
+[ext/pty/pty.c]
+
+  >>>
+    C) Copyright 1998:: by Akinori Ito.
+
+    This software may be redistributed freely for this purpose, in full
+    or in part, provided that this entire copyright notice is included
+    on any copies of this software and applications and derivations thereof.
+
+    This software is provided on an "as is" basis, without warranty of any
+    kind, either expressed or implied, as to any matter including, but not
+    limited to warranty of fitness of purpose, or merchantability, or
+    results obtained from use of this software.
+
+[ext/socket/addrinfo.h]
+[ext/socket/getaddrinfo.c]
+[ext/socket/getnameinfo.c]
 
   These files are under the new-style BSD license.
 
-    Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
+  >>>
+    Copyright (C) 1995, 1996, 1997, 1998, and 1999:: WIDE Project.
     All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
@@ -388,17 +831,221 @@ ext/socket/getnameinfo.c:
     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     SUCH DAMAGE.
 
-ext/win32ole/win32ole.c:
+[ext/win32ole/win32ole.c]
 
   You can apply the Artistic License to this file. (or GPL,
   alternatively)
 
-    (c) 1995 Microsoft Corporation. All rights reserved.
+  >>>
+    (c) 1995:: Microsoft Corporation. All rights reserved.
     Developed by ActiveWare Internet Corp., http://www.ActiveWare.com
 
-    Other modifications Copyright (c) 1997, 1998 by Gurusamy Sarathy
+    Other modifications Copyright (c) 1997, 1998:: by Gurusamy Sarathy
     <gsar@umich.edu> and Jan Dubois <jan.dubois@ibm.net>
- 
+
     You may distribute under the terms of either the GNU General Public
     License or the Artistic License, as specified in the README file
     of the Perl distribution.
+
+  The Wayback Machine url: http://web.archive.org/web/19970607104352/http://www.activeware.com:80/
+
+[lib/rdoc/generator/template/darkfish/css/fonts.css]
+
+  This file is licensed under the {SIL Open Font License}[http://scripts.sil.org/OFL].
+
+[spec/mspec]
+[spec/ruby]
+
+  The files under these directories are under the following license.
+
+  >>>
+    Copyright (c) 2008:: Engine Yard, Inc. All rights reserved.
+
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use,
+    copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following
+    conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+    OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+    OTHER DEALINGS IN THE SOFTWARE.
+
+[lib/rubygems.rb]
+[lib/rubygems]
+[test/rubygems]
+
+  RubyGems is under the following license.
+
+  >>>
+    RubyGems is copyrighted free software by Chad Fowler, Rich Kilmer, Jim
+    Weirich and others.  You can redistribute it and/or modify it under
+    either the terms of the {MIT license}[rdoc-label:label-MIT+License], or the conditions
+    below:
+
+    1. You may make and give away verbatim copies of the source form of the
+       software without restriction, provided that you duplicate all of the
+       original copyright notices and associated disclaimers.
+
+    2. You may modify your copy of the software in any way, provided that
+       you do at least ONE of the following:
+
+       a. place your modifications in the Public Domain or otherwise
+          make them Freely Available, such as by posting said
+          modifications to Usenet or an equivalent medium, or by allowing
+          the author to include your modifications in the software.
+
+       b. use the modified software only within your corporation or
+          organization.
+
+       c. give non-standard executables non-standard names, with
+          instructions on where to get the original software distribution.
+
+       d. make other distribution arrangements with the author.
+
+    3. You may distribute the software in object code or executable
+       form, provided that you do at least ONE of the following:
+
+       a. distribute the executables and library files of the software,
+          together with instructions (in the manual page or equivalent)
+          on where to get the original distribution.
+
+       b. accompany the distribution with the machine-readable source of
+          the software.
+
+       c. give non-standard executables non-standard names, with
+          instructions on where to get the original software distribution.
+
+       d. make other distribution arrangements with the author.
+
+    4. You may modify and include the part of the software into any other
+       software (possibly commercial).
+
+    5. The scripts and library files supplied as input to or produced as
+       output from the software do not automatically fall under the
+       copyright of the software, but belong to whomever generated them,
+       and may be sold commercially, and may be aggregated with this
+       software.
+
+    6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
+       IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+       WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+       PURPOSE.
+
+[lib/bundler]
+[lib/bundler.rb]
+[lib/bundler.gemspec]
+[spec/bundler]
+[man/bundle-*,gemfile.*]
+
+  Bundler is under the following license.
+
+  >>>
+    Portions copyright (c) 2010:: Andre Arko
+    Portions copyright (c) 2009:: Engine Yard
+
+    {MIT License}[rdoc-label:label-MIT+License]
+
+[lib/did_you_mean]
+[lib/did_you_mean.rb]
+[test/did_you_mean]
+
+  did_you_mean is under the following license.
+
+  >>>
+    Copyright (c) 2014-2016 Yuki Nishijima
+
+    {MIT License}[rdoc-label:label-MIT+License]
+
+[benchmark/so_ackermann.rb]
+[benchmark/so_array.rb]
+[benchmark/so_binary_trees.rb]
+[benchmark/so_concatenate.rb]
+[benchmark/so_count_words.yml]
+[benchmark/so_exception.rb]
+[benchmark/so_fannkuch.rb]
+[benchmark/so_fasta.rb]
+[benchmark/so_k_nucleotide.yml]
+[benchmark/so_lists.rb]
+[benchmark/so_mandelbrot.rb]
+[benchmark/so_matrix.rb]
+[benchmark/so_meteor_contest.rb]
+[benchmark/so_nbody.rb]
+[benchmark/so_nested_loop.rb]
+[benchmark/so_nsieve.rb]
+[benchmark/so_nsieve_bits.rb]
+[benchmark/so_object.rb]
+[benchmark/so_partial_sums.rb]
+[benchmark/so_pidigits.rb]
+[benchmark/so_random.rb]
+[benchmark/so_reverse_complement.yml]
+[benchmark/so_sieve.rb]
+[benchmark/so_spectralnorm.rb]
+
+  These files are very old copy of then-called "The Great Computer Language
+  Shootout".  LEGAL SITUATION OF THESE FILES ARE UNCLEAR because the original
+  site has been lost.  Upstream diverged to delete several benchmarks listed
+  above.
+
+== MIT License
+>>>
+      Permission is hereby granted, free of charge, to any person obtaining
+      a copy of this software and associated documentation files (the
+      "Software"), to deal in the Software without restriction, including
+      without limitation the rights to use, copy, modify, merge, publish,
+      distribute, sublicense, and/or sell copies of the Software, and to
+      permit persons to whom the Software is furnished to do so, subject to
+      the following conditions:
+
+      The above copyright notice and this permission notice shall be
+      included in all copies or substantial portions of the Software.
+
+      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+      EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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+      OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+      WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+== Old-style BSD license
+>>>
+      Redistribution and use in source and binary forms, with or without
+      modification, are permitted provided that the following conditions
+      are met:
+      1. Redistributions of source code must retain the above copyright
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+      2. Redistributions in binary form must reproduce the above copyright
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+         documentation and/or other materials provided with the distribution.
+      3. Neither the name of the University nor the names of its contributors
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+         without specific prior written permission.
+
+      THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+      ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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+      LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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+      SUCH DAMAGE.
+
+      IMPORTANT NOTE::
+
+      From ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
+      paragraph 3 above is now null and void.
diff --git a/LGPL b/LGPL
deleted file mode 100644
index b1e3f5a263..0000000000
--- a/LGPL
+++ /dev/null
@@ -1,504 +0,0 @@
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-
-
diff --git a/Makefile.in b/Makefile.in
deleted file mode 100644
index b0da254c71..0000000000
--- a/Makefile.in
+++ /dev/null
@@ -1,286 +0,0 @@
-SHELL = /bin/sh
-NULLCMD = :
-RUNCMD = $(SHELL)
-exec = exec
-
-#### Start of system configuration section. ####
-
-srcdir = @srcdir@
-top_srcdir = $(srcdir)
-hdrdir = $(srcdir)/include
-
-CC = @CC@
-YACC = bison
-PURIFY =
-AUTOCONF = autoconf
-@SET_MAKE@
-MKFILES = @MAKEFILES@
-BASERUBY = @BASERUBY@
-
-prefix = @prefix@
-exec_prefix = @exec_prefix@
-bindir = @bindir@
-sbindir = @sbindir@
-libdir = @libdir@
-libexecdir = @libexecdir@
-datarootdir = @datarootdir@
-datadir = @datadir@
-arch = @arch@
-sitearch = @sitearch@
-sitedir = @sitedir@
-ruby_version = @ruby_version@
-
-TESTUI = console
-TESTS =
-RDOCTARGET = @RDOCTARGET@
-
-EXTOUT = @EXTOUT@
-RIDATADIR = $(DESTDIR)$(datadir)/ri/$(MAJOR).$(MINOR)/system
-arch_hdrdir = $(EXTOUT)/include/$(arch)
-VPATH = $(arch_hdrdir)/ruby:$(hdrdir)/ruby:$(srcdir):$(srcdir)/enc:$(srcdir)/missing
-
-empty =
-OUTFLAG = @OUTFLAG@$(empty)
-COUTFLAG = @COUTFLAG@$(empty)
-CFLAGS = @CFLAGS@ @ARCH_FLAG@
-cflags = @cflags@
-optflags = @optflags@
-debugflags = @debugflags@
-warnflags = @warnflags@
-XCFLAGS = -I. -I$(arch_hdrdir) -I$(hdrdir) -I$(srcdir) @XCFLAGS@
-CPPFLAGS = @CPPFLAGS@
-LDFLAGS = @STATIC@ $(CFLAGS) @LDFLAGS@
-EXTLDFLAGS = 
-XLDFLAGS = @XLDFLAGS@ $(EXTLDFLAGS)
-EXTLIBS = 
-LIBS = @LIBS@ $(EXTLIBS)
-MISSING = @LIBOBJS@ @ALLOCA@
-LDSHARED = @LIBRUBY_LDSHARED@
-DLDFLAGS = @LIBRUBY_DLDFLAGS@ $(EXTLDFLAGS) @ARCH_FLAG@
-SOLIBS = @SOLIBS@
-MAINLIBS = @MAINLIBS@
-ARCHMINIOBJS = @MINIOBJS@
-BUILTIN_ENCOBJS = @BUILTIN_ENCOBJS@
-BUILTIN_TRANSSRCS = @BUILTIN_TRANSSRCS@
-BUILTIN_TRANSOBJS = @BUILTIN_TRANSOBJS@
-
-RUBY_INSTALL_NAME=@RUBY_INSTALL_NAME@
-RUBY_SO_NAME=@RUBY_SO_NAME@
-EXEEXT = @EXEEXT@
-PROGRAM=$(RUBY_INSTALL_NAME)$(EXEEXT)
-RUBY = $(RUBY_INSTALL_NAME)
-MINIRUBY = @MINIRUBY@ $(MINIRUBYOPT)
-RUNRUBY = @RUNRUBY@ $(RUNRUBYOPT) --
-
-#### End of system configuration section. ####
-
-MAJOR=	@MAJOR@
-MINOR=	@MINOR@
-TEENY=	@TEENY@
-
-LIBRUBY_A     = @LIBRUBY_A@
-LIBRUBY_SO    = @LIBRUBY_SO@
-LIBRUBY_ALIASES= @LIBRUBY_ALIASES@
-LIBRUBY	      = @LIBRUBY@
-LIBRUBYARG    = @LIBRUBYARG@
-LIBRUBYARG_STATIC = @LIBRUBYARG_STATIC@
-LIBRUBYARG_SHARED = @LIBRUBYARG_SHARED@
-
-THREAD_MODEL  = @THREAD_MODEL@
-
-PREP          = @PREP@
-ARCHFILE      = @ARCHFILE@
-SETUP         =
-EXTSTATIC     = @EXTSTATIC@
-SET_LC_MESSAGES = env LC_MESSAGES=C
-
-MAKEDIRS      = @MAKEDIRS@
-CP            = cp
-MV            = mv
-RM            = rm -f
-RMDIRS        = @RMDIRS@
-NM            = @NM@
-AR            = @AR@
-ARFLAGS       = rcu
-RANLIB        = @RANLIB@
-AS            = @AS@
-ASFLAGS       = @ASFLAGS@
-IFCHANGE      = $(srcdir)/tool/ifchange
-SET_LC_MESSAGES = env LC_MESSAGES=C
-OBJDUMP       = @OBJDUMP@
-OBJCOPY       = @OBJCOPY@
-VCS           = @VCS@
-VCSUP         = @VCSUP@
-
-OBJEXT        = @OBJEXT@
-ASMEXT        = S
-DLEXT         = @DLEXT@
-MANTYPE	      = @MANTYPE@
-
-INSTALLED_LIST= .installed.list
-
-MKMAIN_CMD    = mkmain.sh
-#### End of variables
-
-all:
-
-.DEFAULT: all
-
-# Prevent GNU make v3 from overflowing arg limit on SysV.
-.NOEXPORT:
-
-miniruby$(EXEEXT):
-		@-if test -f $@; then mv -f $@ $@.old; $(RM) $@.old; fi
-		$(PURIFY) $(CC) $(LDFLAGS) $(XLDFLAGS) $(MAINLIBS) $(MAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(DMYEXT) $(ARCHFILE) $(LIBS) $(OUTFLAG)$@
-
-$(PROGRAM):
-		@$(RM) $@
-		$(PURIFY) $(CC) $(LDFLAGS) $(XLDFLAGS) $(MAINLIBS) $(MAINOBJ) $(EXTOBJS) $(LIBRUBYARG) $(LIBS) $(OUTFLAG)$@
-
-# We must `rm' the library each time this rule is invoked because "updating" a
-# MAB library on Apple/NeXT (see --enable-fat-binary in configure) is not
-# supported.
-$(LIBRUBY_A):
-		@$(RM) $@
-		$(AR) $(ARFLAGS) $@ $(OBJS) $(DMYEXT)
-		@-$(RANLIB) $@ 2> /dev/null || true
-
-$(LIBRUBY_SO):
-		@-$(PRE_LIBRUBY_UPDATE)
-		$(LDSHARED) $(DLDFLAGS) $(OBJS) $(DLDOBJS) $(SOLIBS) $(OUTFLAG)$@
-		-$(OBJCOPY) -w -L '@EXPORT_PREFIX@Init_*' $@
-		@-$(MINIRUBY) -e 'ARGV.each{|link| File.delete link if File.exist? link; \
-						  File.symlink "$(LIBRUBY_SO)", link}' \
-				$(LIBRUBY_ALIASES) || true
-
-fake: $(arch)-fake.rb
-$(arch)-fake.rb: config.status
-		 @./config.status --file=$@:$(srcdir)/template/fake.rb.in
-
-Makefile:	$(srcdir)/Makefile.in $(srcdir)/enc/Makefile.in
-
-$(MKFILES): config.status
-		MAKE=$(MAKE) $(SHELL) ./config.status
-		@{ \
-		    echo "all:; -@rm -f conftest.mk"; \
-		    echo "conftest.mk: .force; @echo AUTO_REMAKE"; \
-		    echo ".force:"; \
-		} > conftest.mk || exit 1; \
-		$(MAKE) -f conftest.mk | grep '^AUTO_REMAKE$$' >/dev/null 2>&1 || \
-		{ echo "Makefile updated, restart."; exit 1; }
-
-uncommon.mk: $(srcdir)/common.mk
-		sed 's/{\$$([^(){}]*)[^{}]*}//g' $< > $@
-
-config.status:	$(srcdir)/configure $(srcdir)/enc/Makefile.in
-		MINIRUBY="$(MINIRUBY)" $(SHELL) ./config.status --recheck
-
-$(srcdir)/configure: $(srcdir)/configure.in
-		cd $(srcdir) && $(AUTOCONF)
-
-# Things which should be considered:
-# * with gperf v.s. without gperf
-# * ./configure v.s. ../ruby/configure
-# * GNU make v.s. HP-UX make	# HP-UX make invokes the action if lex.c and keywords has same mtime.
-# * svn checkout generate a file with mtime as current time
-# * XFS has a mtime with fractional part
-lex.c: defs/keywords
-	@\
-	if cmp -s $(srcdir)/defs/lex.c.src $?; then \
-	  set -x; \
-	  cp $(srcdir)/lex.c.blt $@; \
-	else \
-	  set -x; \
-	  gperf -C -p -j1 -i 1 -g -o -t -N rb_reserved_word -k1,3,$$ $? > $@.tmp && \
-	  mv $@.tmp $@ && \
-	  cp $? $(srcdir)/defs/lex.c.src && \
-	  cp $@ $(srcdir)/lex.c.blt; \
-	fi
-
-.c.@OBJEXT@:
-	$(CC) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(COUTFLAG)$@ -c $<
-
-.s.@OBJEXT@:
-	$(AS) $(ASFLAGS) -o $@ $<
-
-.c.S:
-	$(CC) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(COUTFLAG)$@ -S $<
-
-clean-local::
-	@$(RM) ext/extinit.c ext/extinit.$(OBJEXT) ext/ripper/y.output
-
-distclean-local::
-	@$(RM) ext/config.cache $(RBCONFIG)
-	@-$(RM) run.gdb
-	@-$(RM) $(INSTALLED_LIST) $(arch_hdrdir)/ruby/config.h
-	@-$(RMDIRS) $(arch_hdrdir)/ruby
-
-distclean-rdoc:
-	@$(RMALL) $(RDOCOUT:/=\)
-
-clean-ext distclean-ext realclean-ext::
-	@set dummy ${EXTS}; shift; \
-	if test "$$#" = 0; then \
-	    set dummy `find ext -name Makefile | sed 's:^ext/::;s:/Makefile$$::' | sort`; \
-	    shift; \
-	fi; \
-	for dir; do \
-	    [ -f "ext/$$dir/Makefile" ] || continue; \
-	    echo $(@:-ext=)ing "$$dir"; \
-	    (cd "ext/$$dir" && exec $(MAKE) $(MFLAGS) $(@:-ext=)) && \
-	    case "$@" in \
-	    *distclean-ext*|*realclean-ext*) \
-		$(RMDIRS) "ext/$$dir";; \
-	    esac; \
-	done
-
-distclean-ext realclean-ext::
-	@-rmdir ext 2> /dev/null || true
-
-ext/extinit.$(OBJEXT): ext/extinit.c $(SETUP)
-	$(CC) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(COUTFLAG)$@ -c ext/extinit.c
-
-up::
-	@LC_TIME=C cd "$(srcdir)" && $(VCSUP)
-
-update-rubyspec: 
-	@if [ -d $(srcdir)/spec/mspec ]; then \
-	  cd $(srcdir)/spec/mspec; \
-	  echo updating mspec ...; \
-	  git pull; \
-	  cd ../..; \
-	else \
-	  echo retrieving mspec ...; \
-	  git clone $(MSPEC_GIT_URL) $(srcdir)/spec/mspec; \
-	fi
-	@if [ -d $(srcdir)/spec/rubyspec ]; then \
-	  cd $(srcdir)/spec/rubyspec; \
-	  echo updating rubyspec ...; \
-	  git pull; \
-	else \
-	  echo retrieving rubyspec ...; \
-	  git clone $(RUBYSPEC_GIT_URL) $(srcdir)/spec/rubyspec; \
-	fi
-
-test-rubyspec:
-	@if [ ! -d $(srcdir)/spec/rubyspec ]; then echo No rubyspec here.  make update-rubyspec first.; exit 1; fi
-	$(RUNRUBY) $(srcdir)/spec/mspec/bin/mspec -B $(srcdir)/spec/default.mspec $(MSPECOPT)
-
-INSNS	= opt_sc.inc optinsn.inc optunifs.inc insns.inc insns_info.inc \
-	  vmtc.inc vm.inc
-
-$(INSNS):
-	@$(RM) $(PROGRAM)
-	$(BASERUBY) -Ks $(srcdir)/tool/insns2vm.rb $(INSNS2VMOPT) $@
-
-node_name.inc:
-	$(BASERUBY) -n $(srcdir)/tool/node_name.rb $? > $@
-
-known_errors.inc:
-	$(BASERUBY) $(srcdir)/tool/generic_erb.rb -c -o $@ $(srcdir)/template/known_errors.inc.tmpl $(srcdir)/defs/known_errors.def
-
-miniprelude.c:
-	$(BASERUBY) -I$(srcdir) $(srcdir)/tool/compile_prelude.rb $(srcdir)/prelude.rb $@
-
-newline.c: 
-	$(BASERUBY) "$(srcdir)/tool/transcode-tblgen.rb" -vo newline.c $(srcdir)/enc/trans/newline.trans
diff --git a/NEWS b/NEWS
deleted file mode 100644
index 05752330eb..0000000000
--- a/NEWS
+++ /dev/null
@@ -1,420 +0,0 @@
-= NEWS
-
-This document is a list of user visible feature changes made between
-releases except for bug fixes.
-
-Note that each entry is kept so brief that no reason behind or
-reference information is supplied with.  For a full list of changes
-with all sufficient information, see the ChangeLog file.
-
-== Changes since the 1.8.7 release
-See doc/NEWS-1.8.7 for changes between 1.8.6 and 1.8.7.
-
-=== Compatibility issues
-
-* language core
-
-    * New syntax and semantics
-          o Block arguments are always local
-          o New semantics for block arguments
-          o defined? and local variables
-          o Parser expects that your source code has only valid byte
-            sequence in some character encoding.  Use magic comments
-            to tell the parser which encoding you use.
-          o New semantics for constant definition in instance_eval
-            or in module_eval.
-
-    * Deprecated syntax
-          o colon (:) instead of "then" in if/unless or case expression.
-          o retry in a loop or an iterator.
-
-* builtin classes and objects
-
-    * Kernel and Object
-          o Kernel#methods and #singleton_methods used to return an 
-            array of strings but now they return an array of symbols.
-    * Class and Module
-          o Module#attr works as Module#attr_reader by default.
-	    Optional boolean argument is obsolete.
-          o Module#instance_methods, #private_instance_methods and
-            #public_instance_methods used to return an array of 
-            strings but now they return an array of symbols.
-          o Extra subclassing check when binding UnboundMethods
-            
-    * Exceptions
-          o Exceptions are equal to each other if they belong to 
-            the same class and have the same message and backtrace.
-          o SystemStackError used to be a subclass of StandardError
-            but not it is a direct subclass of Exception.
-          o SecurityError: ditto
-          o Removed Exception#to_str [Ruby2]
-
-    * Enumerable and Enumerator
-          o Enumerable::Enumerator, compatibility alias of Enumerator,
-            is removed.
-          o Enumerable#{map,collect} called without a block returns
-            an enumerator.
-          o Even more builtin and bundled libraries have been made to
-            return an enumerator when called without a block.
-    * Array
-          o Array#nitems was removed (use count {|i| !i.nil?})
-          o Array#choice was removed (use sample)
-          o Array#[m,n] = nil places nil in the array.
-    * Hash
-          o Hash#to_s is equivalent to Hash#inspect
-          o Semantics for Hash#each and Hash#each_pair
-          o Hash#select returns a hash
-          o Hash#key is the new name for #index which has been
-            deprecated.
-          o Hash preserves order.  It enumerates its elements in the
-            order in which the keys are inserted.
-          o Most of the changes in Hash apply to hash like interfaces
-            such as ENV and *DBM.
-    * IO operations
-          o Many methods used to act byte-wise but now some of those act 
-            character-wise. You can use alternate byte-wise methods.
-          o IO#getc
-          o Non-blocking IO
-          o Kernel#open takes "t" for newline conversion
-          o Kernel#open takes encoding specified
-          o IO automatically converts byte sequence from a character
-            encodings into another if specified.
-          o StringIO#readpartial
-          o IO.try_convert
-          o IO.binread
-          o IO.copy_stream
-          o IO#binmode?
-          o IO#close_on_exec= and IO#close_on_exec?
-          o Limit input in IO#gets, IO#readline, IO#readlines,
-            IO#each_line, IO#lines, IO.foreach, IO.readlines,
-            StringIO#gets, StringIO#readline, StringIO#each,
-            StringIO#readlines
-          o IO#ungetc, StringIO#ungetc
-          o IO#ungetbyte, StringIO#ungetbyte
-          o IO#internal_encoding, IO#external_encoding,
-            IO#set_encoding
-          o IO.pipe takes encoding option
-          o Directive %u behaves like %d for negative values in 
-            printf-style formatting.
-    * File and Dir operations
-          o #to_path is called as necessary in File.path, File.chmod,
-            File.lchmod, File.chown, File.lchown, File.utime,
-            File.unlink, etc..
-          o File.world_readable?
-          o File.world_writable?
-          o Dir.[], Dir.glob
-          o Dir.exist?
-          o Dir.exists?
-    * File::Stat
-          o File::Stat#world_readable?
-          o File::Stat#world_writable?
-    * String
-          o No longer an Enumerable: use each_line/lines for line
-            oriented operation
-          o Encoding-awareness
-              o Character-wise semantics in many methods instead of
-                byte-wise.
-                  o String#[]: Indexing a String with an integer returns a
-                    single character String instead of an integer.
-                  o String#[]=: No longer takes an integer as right
-                    side value.  Note that "str[i] = ?c" because of
-                    the following change.
-                  o ?c is evaluated to a single character string
-                    instead of an integer.
-    * Regexp
-          o Encoding-awareness
-          o Regexp matches only with strings which is encoded in a
-            compatible character encoding to the regexp's.
-          o Regexp#kcode is removed. use Regexp#encoding.
-    * Symbols: restriction on literal symbols
-    * Numeric
-          o Numeric#div always rounds as Integer#div has done.
-          o Numeric#fdiv: ditto.
-    * Integer
-          o Integer(nil) raises TypeError
-    * Fixnum
-          o Fixnum#id2name removed
-          o Fixnum#to_sym removed
-    * Struct
-          o Struct#inspect
-    * Time
-          o New format in Time#to_s
-          o Timezone information preserved on Marshal.dump/load
-    * $SAFE and bound methods
-          o New trusted/untrusted model in addition to
-            tainted/untainted model.
-
-    * Deprecation
-          o $= (global flag for case-sensitiveness on string matching)
-          o Kernel#to_a
-          o Kernel#getc, #gsub, #sub
-          o Kernel#callcc and Continuation now become 'continuation'
-            bundled library.
-          o Object#type
-          o Removed Array and Hash #indices, #indexes
-          o Hash#index
-          o ENV.index
-          o Process::Status#to_int
-          o Numeric#rdiv
-          o Precision is removed.  Don't cry, it will be redesigned
-            and come back in future version.
-          o Symbol#to_int and Symbol#to_i
-          o $KCODE is no longer effective.  Use Encoding related
-            features of each class.
-          o VERSION and friends
-
-* bundled libraries
-
-    * Pathname
-          o No longer has #to_str nor #=~.
-    * time and date
-          o Time.parse and Date.parse interprets slashed numerical dates 
-	    as "dd/mm/yyyy".
-    * Readline
-          o If Readline uses libedit, Readline::HISTORY[0] returns the
-            first of the history.
-    * Continuation
-          o as above
-
-    * Deprecation
-          o Complex#image: use Complex#imag
-          o All SSL-related class methods in Net::SMTP
-          o Prime#cache, Prime#primes, Prime#primes_so_far
-          o mailread library: use tmail gem.
-          o cgi-lib library: use cgi.
-          o date2 library: use date.
-          o eregex library
-          o finalize library: use ObjectSpace.define_finalizer if you
-            really need a finalizer. really?
-          o ftools library: use fileutils.
-          o generator library: use Enumerator.
-          o importenv library and Env library
-          o jcode library: use multilingualization support of String
-          o parsedate library
-          o ping library
-          o readbytes library
-          o getopts library and parsearg library: use optparse or
-            getoptlong.
-          o soap, wsdl and xsd libraries: use soap4r gem.
-          o Win32API library: use dl.
-          o dl library: Reimplemented and API changed. use the new
-	    version of dl or ffi gem.
-          o rubyunit library and runit library: use minitest or
-            test/unit. Or use anything you love through RubyGems.
-          o test/unit is reimplemented on top of minitest.  This is
-            not fully compatible with the original.
-
-=== Language core changes
-
-    * New syntax and semantics
-          o Magic comments to declare in which encoding your source
-            code is written
-          o New literal hash syntax and new syntax for hash style 
-	    arguments 
-          o New syntax for lambdas
-          o .() and calling Procs without #call/#[]
-          o Block in block arguments
-          o Block local variables
-          o Mandatory arguments after optional arguments allowed
-          o Multiple splats allowed
-          o #[] can take splatted arguments, hash style arguments 
-            and a block.
-          o New directives in printf-style formatted strings (%).
-          o Newlines allowed before ternary colon operator (:) and
-            method call dot operator (.)
-          o Negative operators such as !, != and !~ are now
-            overloadable
-          o Encoding.default_external and default_internal
-          o __ENCODING__: New pseudo variable to hold the current
-            script's encoding
-
-=== Library updates
-
-* builtin classes and objects
-    * Kernel and Object
-          o BasicObject
-          o Object#=~ returns nil instead of false by default.
-          o Kernel#define_singleton_method
-	  o Kernel#load can load a library from the highest versions
-	    of gems by default.
-    * Class and Module
-          o Module#const_defined?, #const_get and #method_defined?
-            take an optional parameter.
-          o #class_variable_{set,get} are public.
-          o Class of singleton classes
-
-    * Errno::EXXX
-          o All of those are always defined.  Errno::EXXX will be
-            defined as an alias to Errno::NOERROR if your platform
-            does not have one.
-
-    * Binding#eval
-    * Blocks and Procs
-          o Arity of blocks without arguments
-          o proc is now a synonym of Proc.new
-          o Proc#yield
-          o Passing blocks to #[]
-          o Proc#lambda?
-          o Proc#curry
-    * Fiber: coroutines/micro-threads
-    * Thread
-          o Thread.critical and Thread.critical= removed
-          o Thread#exit!, Thread#kill! and Thread#terminate! removed.
-
-    * Enumerable and Enumerator
-          o Enumerator#enum_cons and Enumerator#enum_slice are
-            removed.  Use #each_cons and #each_slice without a block.            
-          o Enumerable#each_with_index can take optional arguments
-            and passes them to #each.
-          o Enumerable#each_with_object
-          o Enumerator#with_object
-          o Enumerator.new { ... }
-    * Array
-          o Array#delete returns a deleted element rather than a given
-            object
-          o Array#to_s is equivalent to Array#inspect
-          o Array.try_convert
-          o Array#pack('m0') complies with RFC 4648.
-    * Hash
-          o preserving item insertion order
-          o Hash#default_proc=
-          o Hash#_compare_by_identity and Hash#compare_by_identity?
-          o Hash.try_convert
-          o Hash#assoc
-          o Hash#rassoc
-          o Hash#flatten
-    * Range
-          o Range#cover?
-          o Range#include? iterates over elements and compares the
-            given value with each element unless the range is numeric.
-            Use Range#cover? for the old behavior, i.e. comparison
-            with boundary values.
-          o Range#min, Range#max
-
-    * File and Dir operations
-          o New methods
-    * Process
-          o Process.spawn
-          o Process.daemon
-    * String
-          o String#clear
-          o String#ord
-          o String#getbyte, String#setbyte
-          o String#chars and String#each_char act as character-wise.
-          o String#codepoints, String#each_codepoint
-          o String#unpack with a block
-          o String#hash
-          o String.try_convert
-          o String#encoding
-	  o String#force_encoding, String#encode and String#encode!
-          o String#ascii_only?
-          o String#valid_encoding?
-	  o String#match
-    * Symbol
-          o Zero-length symbols allowed
-          o Symbol#intern
-          o Symbol#encoding
-          o Symbol methods similar to those in String
-    * Regexp
-          o Regexp#=== matches symbols
-          o Regexp.try_convert
-          o Regexp#match
-          o Regexp#fixed_encoding?
-          o Regexp#encoding
-          o Regexp#named_captures
-          o Regexp#names
-    * MatchData
-          o MatchData#names
-          o MatchData#regexp
-    * Encoding
-    * Encoding::Converter
-          o supports conversion between many encodings
-    * Numeric
-          o Numeric#upto, #downto, #times, #step
-          o Numeric#real?, Complex#real?
-          o Numeric#magnitude
-    * Rational / Complex
-          o They are in the core library now
-    * Math
-          o Math#log takes an optional argument.
-          o Math#log2
-          o Math#cbrt, Math#lgamma, Math#gamma
-    * Time
-          o Time.times removed.  Use Process.times.
-          o Time#sunday?
-          o Time#monday?
-          o Time#tuesday?
-          o Time#wednesday?
-          o Time#thursday?
-          o Time#friday?
-          o Time#saturday?
-          o Time#tv_nsec and Time#nsec
-    * Misc. new methods
-          o RUBY_ENGINE to distinguish between Ruby processor implementation
-          o public_method
-          o public_send
-          o GC.count
-          o ObjectSpace.count_objects
-          o Method#hash, Proc#hash
-          o Method#source_location, UnboundMethod#source_location and
-	    Proc#source_location
-          o __callee__
-          o Elements in $LOAD_PATH and $LOADED_FEATURES are expanded
-
-* bundled libraries
-    * RubyGems
-          o Package management system for Ruby.
-          o Integrated with Ruby's library loader.
-    * Rake
-          o Ruby make. A simple ruby build program with capabilities
-            similar to make.
-    * minitest
-          o Our new testing library which is faster, cleaner and easier
-	    to read than the old test/unit.
-          o You can introduce the old test/unit as testunit gem through
-            RubyGems if you want.
-    * CMath
-          o Complex number version of Math
-    * Prime
-          o Extracted from Mathn and improved. You can easily enumerate
-            prime numbers.
-          o Prime.new is obsolete. Use its class methods.
-    * ripper
-          o Ruby script parser
-    * Readline
-          o Readline.vi_editing_mode?
-          o Readline.emacs_editing_mode?
-          o Readline::HISTORY.clear
-    * Tk
-          o TkXXX widget classes are removed and redefined as aliases of 
-            Tk::XXX classes.
-    * RDoc
-          o Updated to version 2.2.2.  See:
-            http://rubyforge.org/frs/shownotes.php?group_id=627&release_id=26434
-
-* commandline options
-    * -E, --encoding
-    * -U
-    * --enable-gems, --disable-gems
-    * --enable-rubyopt, --disable-rubyopt
-    * long options are allowed in RUBYOPT environment variable.
-
-=== Implementation changes
-
-* Memory Diet
-    * Object Compaction - Object, Array, String, Hash, Struct, Class,
-      Module
-    * st_table compaction (inlining small tables)
-* YARV
-    * Ruby codes are compiled into opcodes before executed.
-    * Native thread
-
-* Platform supports
-    * Support levels
-          (0) Supported
-          (1) Best effort
-          (2) Perhaps
-          (3) Not supported
-    * Dropped
-          o No longer supports djgpp, bcc32, human68k, MacOS 9 or earlier,
-            VMS nor Windows CE.
diff --git a/NEWS.md b/NEWS.md
new file mode 100644
index 0000000000..2dcfacb6e2
--- /dev/null
+++ b/NEWS.md
@@ -0,0 +1,820 @@
+# NEWS for Ruby 3.0.0
+
+This document is a list of user visible feature changes
+since the **2.7.0** release, except for bug fixes.
+
+Note that each entry is kept so brief that no reason behind or reference
+information is supplied with.  For a full list of changes with all
+sufficient information, see the ChangeLog file or Redmine
+(e.g. `https://bugs.ruby-lang.org/issues/$FEATURE_OR_BUG_NUMBER`).
+
+## Language changes
+
+* Keyword arguments are now separated from positional arguments.
+  Code that resulted in deprecation warnings in Ruby 2.7 will now
+  result in ArgumentError or different behavior. [[Feature #14183]]
+
+* Procs accepting a single rest argument and keywords are no longer
+  subject to autosplatting.  This now matches the behavior of Procs
+  accepting a single rest argument and no keywords.
+  [[Feature #16166]]
+
+    ```ruby
+    pr = proc{|*a, **kw| [a, kw]}
+
+    pr.call([1])
+    # 2.7 => [[1], {}]
+    # 3.0 => [[[1]], {}]
+
+    pr.call([1, {a: 1}])
+    # 2.7 => [[1], {:a=>1}] # and deprecation warning
+    # 3.0 => [[[1, {:a=>1}]], {}]
+    ```
+
+* Arguments forwarding (`...`) now supports leading arguments.
+  [[Feature #16378]]
+
+    ```ruby
+    def method_missing(meth, ...)
+      send(:"do_#{meth}", ...)
+    end
+    ```
+
+* Pattern matching (`case/in`) is no longer experimental. [[Feature #17260]]
+
+* One-line pattern matching is redesigned.  [EXPERIMENTAL]
+
+    * `=>` is added. It can be used like a rightward assignment.
+      [[Feature #17260]]
+
+        ```ruby
+        0 => a
+        p a #=> 0
+
+        {b: 0, c: 1} => {b:}
+        p b #=> 0
+        ```
+
+    * `in` is changed to return `true` or `false`. [[Feature #17371]]
+
+        ```ruby
+        # version 3.0
+        0 in 1 #=> false
+
+        # version 2.7
+        0 in 1 #=> raise NoMatchingPatternError
+        ```
+
+* Find-pattern is added.  [EXPERIMENTAL]
+  [[Feature #16828]]
+
+    ```ruby
+    case ["a", 1, "b", "c", 2, "d", "e", "f", 3]
+    in [*pre, String => x, String => y, *post]
+      p pre  #=> ["a", 1]
+      p x    #=> "b"
+      p y    #=> "c"
+      p post #=> [2, "d", "e", "f", 3]
+    end
+    ```
+
+* Endless method definition is added.  [EXPERIMENTAL]
+  [[Feature #16746]]
+
+    ```ruby
+    def square(x) = x * x
+    ```
+
+* Interpolated String literals are no longer frozen when
+  `# frozen-string-literal: true` is used. [[Feature #17104]]
+
+* Magic comment `shareable_constant_value` added to freeze constants.
+  See {Magic Comments}[rdoc-ref:doc/syntax/comments.rdoc@Magic+Comments] for more details.
+  [[Feature #17273]]
+
+* A {static analysis}[rdoc-label:label-Static+analysis] foundation is
+  introduced.
+    * {RBS}[rdoc-label:label-RBS] is introduced. It is a type definition
+      language for Ruby programs.
+    * {TypeProf}[rdoc-label:label-TypeProf] is experimentally bundled. It is a
+      type analysis tool for Ruby programs.
+
+* Deprecation warnings are no longer shown by default (since Ruby 2.7.2).
+  Turn them on with `-W:deprecated` (or with `-w` to show other warnings too).
+  [[Feature #16345]]
+
+* $SAFE and $KCODE are now normal global variables with no special behavior.
+  C-API methods related to $SAFE have been removed.
+  [[Feature #16131]] [[Feature #17136]]
+
+* yield in singleton class definitions in methods is now a SyntaxError
+  instead of a warning. yield in a class definition outside of a method
+  is now a SyntaxError instead of a LocalJumpError.  [[Feature #15575]]
+
+* When a class variable is overtaken by the same definition in an
+  ancestor class/module, a RuntimeError is now raised (previously,
+  it only issued a warning in verbose mode).  Additionally, accessing a
+  class variable from the toplevel scope is now a RuntimeError.
+  [[Bug #14541]]
+
+* Assigning to a numbered parameter is now a SyntaxError instead of
+  a warning.
+
+## Command line options
+
+### `--help` option
+
+When the environment variable `RUBY_PAGER` or `PAGER` is present and has
+a non-empty value, and the standard input and output are tty, the `--help`
+option shows the help message via the pager designated by the value.
+[[Feature #16754]]
+
+### `--backtrace-limit` option
+
+The `--backtrace-limit` option limits the maximum length of a backtrace.
+[[Feature #8661]]
+
+## Core classes updates
+
+Outstanding ones only.
+
+* Array
+
+    * The following methods now return Array instances instead of
+      subclass instances when called on subclass instances:
+      [[Bug #6087]]
+
+        * Array#drop
+        * Array#drop_while
+        * Array#flatten
+        * Array#slice!
+        * Array#slice / Array#[]
+        * Array#take
+        * Array#take_while
+        * Array#uniq
+        * Array#*
+
+    * Can be sliced with Enumerator::ArithmeticSequence
+
+        ```ruby
+        dirty_data = ['--', 'data1', '--', 'data2', '--', 'data3']
+        dirty_data[(1..).step(2)] # take each second element
+        # => ["data1", "data2", "data3"]
+        ```
+
+* Binding
+
+    * Binding#eval when called with one argument will use "(eval)"
+      for `__FILE__` and 1 for `__LINE__` in the evaluated code.
+      [[Bug #4352]] [[Bug #17419]]
+
+* ConditionVariable
+
+    * ConditionVariable#wait may now invoke the `block`/`unblock` scheduler
+      hooks in a non-blocking context. [[Feature #16786]]
+
+* Dir
+
+    * Dir.glob and Dir.[] now sort the results by default, and
+      accept the `sort:` keyword option.  [[Feature #8709]]
+
+* ENV
+
+    * ENV.except has been added, which returns a hash excluding the
+      given keys and their values.  [[Feature #15822]]
+
+    * Windows: Read ENV names and values as UTF-8 encoded Strings
+      [[Feature #12650]]
+
+* Encoding
+
+    * Added new encoding IBM720.  [[Feature #16233]]
+
+    * Changed default for Encoding.default_external to UTF-8 on Windows
+      [[Feature #16604]]
+
+* Fiber
+
+    * Fiber.new(blocking: true/false) allows you to create non-blocking
+      execution contexts. [[Feature #16786]]
+
+    * Fiber#blocking? tells whether the fiber is non-blocking. [[Feature #16786]]
+
+    * Fiber#backtrace and Fiber#backtrace_locations provide per-fiber backtrace.
+      [[Feature #16815]]
+
+    * The limitation of Fiber#transfer is relaxed. [[Bug #17221]]
+
+* GC
+
+    * GC.auto_compact= and GC.auto_compact have been added to control
+      when compaction runs.  Setting `auto_compact=` to true will cause
+      compaction to occur during major collections.  At the moment,
+      compaction adds significant overhead to major collections, so please
+      test first!  [[Feature #17176]]
+
+* Hash
+
+    * Hash#transform_keys and Hash#transform_keys! now accept a hash that maps
+      keys to new keys.  [[Feature #16274]]
+
+    * Hash#except has been added, which returns a hash excluding the
+      given keys and their values.  [[Feature #15822]]
+
+* IO
+
+    * IO#nonblock? now defaults to `true`. [[Feature #16786]]
+
+    * IO#wait_readable, IO#wait_writable, IO#read, IO#write and other
+      related methods (e.g. IO#puts, IO#gets) may invoke the scheduler hook
+      `#io_wait(io, events, timeout)` in a non-blocking execution context.
+      [[Feature #16786]]
+
+* Kernel
+
+    * Kernel#clone when called with the `freeze: false` keyword will call
+      `#initialize_clone` with the `freeze: false` keyword.
+      [[Bug #14266]]
+
+    * Kernel#clone when called with the `freeze: true` keyword will call
+      `#initialize_clone` with the `freeze: true` keyword, and will
+      return a frozen copy even if the receiver is unfrozen.
+      [[Feature #16175]]
+
+    * Kernel#eval when called with two arguments will use "(eval)"
+      for `__FILE__` and 1 for `__LINE__` in the evaluated code.
+      [[Bug #4352]]
+
+    * Kernel#lambda now warns if called without a literal block.
+      [[Feature #15973]]
+
+    * Kernel.sleep invokes the scheduler hook `#kernel_sleep(...)` in a
+      non-blocking execution context. [[Feature #16786]]
+
+* Module
+
+    * Module#include and Module#prepend now affect classes and modules
+      that have already included or prepended the receiver, mirroring the
+      behavior if the arguments were included in the receiver before
+      the other modules and classes included or prepended the receiver.
+      [[Feature #9573]]
+
+        ```ruby
+        class C; end
+        module M1; end
+        module M2; end
+        C.include M1
+        M1.include M2
+        p C.ancestors #=> [C, M1, M2, Object, Kernel, BasicObject]
+        ```
+
+    * Module#public, Module#protected, Module#private, Module#public_class_method,
+      Module#private_class_method, toplevel "private" and "public" methods
+      now accept single array argument with a list of method names. [[Feature #17314]]
+
+    * Module#attr_accessor, Module#attr_reader, Module#attr_writer and Module#attr
+      methods now return an array of defined method names as symbols.
+      [[Feature #17314]]
+
+    * Module#alias_method now returns the defined alias as a symbol.
+      [[Feature #17314]]
+
+* Mutex
+
+    * `Mutex` is now acquired per-`Fiber` instead of per-`Thread`. This change
+      should be compatible for essentially all usages and avoids blocking when
+      using a scheduler. [[Feature #16792]]
+
+* Proc
+
+    * Proc#== and Proc#eql? are now defined and will return true for
+      separate Proc instances if the procs were created from the same block.
+      [[Feature #14267]]
+
+* Queue / SizedQueue
+
+    * Queue#pop, SizedQueue#push and related methods may now invoke the
+      `block`/`unblock` scheduler hooks in a non-blocking context.
+      [[Feature #16786]]
+
+* Ractor
+
+    * New class added to enable parallel execution. See rdoc-ref:ractor.md for
+      more details.
+
+* Random
+
+    * `Random::DEFAULT` now refers to the `Random` class instead of being a `Random` instance,
+      so it can work with `Ractor`.
+      [[Feature #17322]]
+
+    * `Random::DEFAULT` is deprecated since its value is now confusing and it is no longer global,
+      use `Kernel.rand`/`Random.rand` directly, or create a `Random` instance with `Random.new` instead.
+      [[Feature #17351]]
+
+
+* String
+
+    * The following methods now return or yield String instances
+      instead of subclass instances when called on subclass instances:
+      [[Bug #10845]]
+
+        * String#*
+        * String#capitalize
+        * String#center
+        * String#chomp
+        * String#chop
+        * String#delete
+        * String#delete_prefix
+        * String#delete_suffix
+        * String#downcase
+        * String#dump
+        * String#each_char
+        * String#each_grapheme_cluster
+        * String#each_line
+        * String#gsub
+        * String#ljust
+        * String#lstrip
+        * String#partition
+        * String#reverse
+        * String#rjust
+        * String#rpartition
+        * String#rstrip
+        * String#scrub
+        * String#slice!
+        * String#slice / String#[]
+        * String#split
+        * String#squeeze
+        * String#strip
+        * String#sub
+        * String#succ / String#next
+        * String#swapcase
+        * String#tr
+        * String#tr_s
+        * String#upcase
+
+* Symbol
+
+    * Symbol#to_proc now returns a lambda Proc.  [[Feature #16260]]
+
+    * Symbol#name has been added, which returns the name of the symbol
+      if it is named.  The returned string is frozen.  [[Feature #16150]]
+
+* Fiber
+
+    * Introduce Fiber.set_scheduler for intercepting blocking operations and
+      Fiber.scheduler for accessing the current scheduler. See
+      rdoc-ref:fiber.md for more details about what operations are supported and
+      how to implement the scheduler hooks. [[Feature #16786]]
+
+    * Fiber.blocking? tells whether the current execution context is
+      blocking. [[Feature #16786]]
+
+    * Thread#join invokes the scheduler hooks `block`/`unblock` in a
+      non-blocking execution context. [[Feature #16786]]
+
+* Thread
+
+    * Thread.ignore_deadlock accessor has been added for disabling the
+      default deadlock detection, allowing the use of signal handlers to
+      break deadlock. [[Bug #13768]]
+
+* Warning
+
+    * Warning#warn now supports a category keyword argument.
+      [[Feature #17122]]
+
+## Stdlib updates
+
+Outstanding ones only.
+
+* BigDecimal
+
+    * Update to BigDecimal 3.0.0
+
+    * This version is Ractor compatible.
+
+* Bundler
+
+    * Update to Bundler 2.2.3
+
+* CGI
+
+    * Update to 0.2.0
+
+    * This version is Ractor compatible.
+
+* CSV
+
+    * Update to CSV 3.1.9
+
+* Date
+
+    * Update to Date 3.1.1
+
+    * This version is Ractor compatible.
+
+* Digest
+
+    * Update to Digest 3.0.0
+
+    * This version is Ractor compatible.
+
+* Etc
+
+    * Update to Etc 1.2.0
+
+    * This version is Ractor compatible.
+
+* Fiddle
+
+    * Update to Fiddle 1.0.5
+
+* IRB
+
+    * Update to IRB 1.2.6
+
+* JSON
+
+    * Update to JSON 2.5.0
+
+    * This version is Ractor compatible.
+
+* Set
+
+    * Update to set 1.0.0
+
+    * SortedSet has been removed for dependency and performance reasons.
+
+    * Set#join is added as a shorthand for `.to_a.join`.
+
+    * Set#<=> is added.
+
+* Socket
+
+    * Add :connect_timeout to TCPSocket.new [[Feature #17187]]
+
+* Net::HTTP
+
+    * Net::HTTP#verify_hostname= and Net::HTTP#verify_hostname have been
+      added to skip hostname verification.  [[Feature #16555]]
+
+    * Net::HTTP.get, Net::HTTP.get_response, and Net::HTTP.get_print
+      can take the request headers as a Hash in the second argument when the
+      first argument is a URI.  [[Feature #16686]]
+
+* Net::SMTP
+
+    * Add SNI support.
+
+    * Net::SMTP.start arguments are keyword arguments.
+
+    * TLS should not check the host name by default.
+
+* OpenStruct
+
+    * Initialization is no longer lazy. [[Bug #12136]]
+
+    * Builtin methods can now be overridden safely. [[Bug #15409]]
+
+    * Implementation uses only methods ending with `!`.
+
+    * Ractor compatible.
+
+    * Improved support for YAML. [[Bug #8382]]
+
+    * Use officially discouraged. Read OpenStruct@Caveats section.
+
+* Pathname
+
+    * Ractor compatible.
+
+* Psych
+
+    * Update to Psych 3.3.0
+
+    * This version is Ractor compatible.
+
+* Reline
+
+    * Update to Reline 0.1.5
+
+* RubyGems
+
+    * Update to RubyGems 3.2.3
+
+* StringIO
+
+    * Update to StringIO 3.0.0
+
+    * This version is Ractor compatible.
+
+* StringScanner
+
+    * Update to StringScanner 3.0.0
+
+    * This version is Ractor compatible.
+
+## Compatibility issues
+
+Excluding feature bug fixes.
+
+* Regexp literals and all Range objects are frozen. [[Feature #8948]] [[Feature #16377]] [[Feature #15504]]
+
+    ```ruby
+    /foo/.frozen? #=> true
+    (42...).frozen? # => true
+    ```
+
+* EXPERIMENTAL: Hash#each consistently yields a 2-element array. [[Bug #12706]]
+
+    * Now `{ a: 1 }.each(&->(k, v) { })` raises an ArgumentError
+      due to lambda's arity check.
+
+* When writing to STDOUT redirected to a closed pipe, no broken pipe
+  error message will be shown now.  [[Feature #14413]]
+
+* `TRUE`/`FALSE`/`NIL` constants are no longer defined.
+
+* Integer#zero? overrides Numeric#zero? for optimization.  [[Misc #16961]]
+
+* Enumerable#grep and Enumerable#grep_v when passed a Regexp and no block no longer modify
+  Regexp.last_match. [[Bug #17030]]
+
+* Requiring 'open-uri' no longer redefines `Kernel#open`.
+  Call `URI.open` directly or `use URI#open` instead. [[Misc #15893]]
+
+* SortedSet has been removed for dependency and performance reasons.
+
+## Stdlib compatibility issues
+
+* Default gems
+
+    * The following libraries are promoted to default gems from stdlib.
+
+        * English
+        * abbrev
+        * base64
+        * drb
+        * debug
+        * erb
+        * find
+        * net-ftp
+        * net-http
+        * net-imap
+        * net-protocol
+        * open-uri
+        * optparse
+        * pp
+        * prettyprint
+        * resolv-replace
+        * resolv
+        * rinda
+        * set
+        * securerandom
+        * shellwords
+        * tempfile
+        * tmpdir
+        * time
+        * tsort
+        * un
+        * weakref
+
+    * The following extensions are promoted to default gems from stdlib.
+
+        * digest
+        * io-nonblock
+        * io-wait
+        * nkf
+        * pathname
+        * syslog
+        * win32ole
+
+* Bundled gems
+
+    * net-telnet and xmlrpc have been removed from the bundled gems.
+      If you are interested in maintaining them, please comment on
+      your plan to https://github.com/ruby/xmlrpc
+      or https://github.com/ruby/net-telnet.
+
+* SDBM has been removed from the Ruby standard library. [[Bug #8446]]
+
+    * The issues of sdbm will be handled at https://github.com/ruby/sdbm
+
+* WEBrick has been removed from the Ruby standard library. [[Feature #17303]]
+
+    * The issues of WEBrick will be handled at https://github.com/ruby/webrick
+
+## C API updates
+
+* C API functions related to $SAFE have been removed.
+  [[Feature #16131]]
+
+* C API header file `ruby/ruby.h` was split. [[GH-2991]]
+
+    This should have no impact on extension libraries,
+    but users might experience slow compilations.
+
+* Memory view interface [EXPERIMENTAL]
+
+    * The memory view interface is a C-API set to exchange a raw memory area,
+      such as a numeric array or a bitmap image, between extension libraries.
+      The extension libraries can share also the metadata of the memory area
+      that consists of the shape, the element format, and so on.
+      Using these kinds of metadata, the extension libraries can share even
+      a multidimensional array appropriately.
+      This feature is designed by referring to Python's buffer protocol.
+      [[Feature #13767]] [[Feature #14722]]
+
+* Ractor related C APIs are introduced (experimental) in "include/ruby/ractor.h".
+
+## Implementation improvements
+
+* New method cache mechanism for Ractor. [[Feature #16614]]
+
+    * Inline method caches pointed from ISeq can be accessed by multiple Ractors
+      in parallel and synchronization is needed even for method caches. However,
+      such synchronization can be overhead so introducing new inline method cache
+      mechanisms, (1) Disposable inline method cache (2) per-Class method cache
+      and (3) new invalidation mechanism. (1) can avoid per-method call
+      synchronization because it only uses atomic operations.
+      See the ticket for more details.
+
+* The number of hashes allocated when using a keyword splat in
+  a method call has been reduced to a maximum of 1, and passing
+  a keyword splat to a method that accepts specific keywords
+  does not allocate a hash.
+
+* `super` is optimized when the same type of method is called in the previous call
+  if it's not refinements or an attr reader or writer.
+
+### JIT
+
+* Performance improvements of JIT-ed code
+
+    * Microarchitectural optimizations
+
+        * Native functions shared by multiple methods are deduplicated on JIT compaction.
+
+        * Decrease code size of hot paths by some optimizations and partitioning cold paths.
+
+    * Instance variables
+
+        * Eliminate some redundant checks.
+
+        * Skip checking a class and a object multiple times in a method when possible.
+
+        * Optimize accesses in some core classes like Hash and their subclasses.
+
+    * Method inlining support for some C methods
+
+        * `Kernel`: `#class`, `#frozen?`
+
+        * `Integer`: `#-@`, `#~`, `#abs`, `#bit_length`, `#even?`, `#integer?`, `#magnitude`,
+          `#odd?`, `#ord`, `#to_i`, `#to_int`, `#zero?`
+
+        * `Struct`: reader methods for 10th or later members
+
+    * Constant references are inlined.
+
+    * Always generate appropriate code for `==`, `nil?`, and `!` calls depending on
+      a receiver class.
+
+    * Reduce the number of PC accesses on branches and method returns.
+
+    * Optimize C method calls a little.
+
+* Compilation process improvements
+
+    * It does not keep temporary files in /tmp anymore.
+
+    * Throttle GC and compaction of JIT-ed code.
+
+    * Avoid GC-ing JIT-ed code when not necessary.
+
+    * GC-ing JIT-ed code is executed in a background thread.
+
+    * Reduce the number of locks between Ruby and JIT threads.
+
+## Static analysis
+
+### RBS
+
+* RBS is a new language for type definition of Ruby programs.
+  It allows writing types of classes and modules with advanced
+  types including union types, overloading, generics, and
+  _interface types_ for duck typing.
+
+* Ruby ships with type definitions for core/stdlib classes.
+
+* `rbs` gem is bundled to load and process RBS files.
+
+### TypeProf
+
+* TypeProf is a type analysis tool for Ruby code based on abstract interpretation.
+
+    * It reads non-annotated Ruby code, tries inferring its type signature, and prints
+      the analysis result in RBS format.
+
+    * Though it supports only a subset of the Ruby language yet, we will continuously
+      improve the coverage of language features, analysis performance, and usability.
+
+```ruby
+# test.rb
+def foo(x)
+  if x > 10
+    x.to_s
+  else
+    nil
+  end
+end
+
+foo(42)
+```
+
+```
+$ typeprof test.rb
+# Classes
+class Object
+  def foo : (Integer) -> String?
+end
+```
+
+## Miscellaneous changes
+
+* Methods using `ruby2_keywords` will no longer keep empty keyword
+  splats, those are now removed just as they are for methods not
+  using `ruby2_keywords`.
+
+* When an exception is caught in the default handler, the error
+  message and backtrace are printed in order from the innermost.
+  [[Feature #8661]]
+
+* Accessing an uninitialized instance variable no longer emits a
+  warning in verbose mode. [[Feature #17055]]
+
+[Bug #4352]:      https://bugs.ruby-lang.org/issues/4352
+[Bug #6087]:      https://bugs.ruby-lang.org/issues/6087
+[Bug #8382]:      https://bugs.ruby-lang.org/issues/8382
+[Bug #8446]:      https://bugs.ruby-lang.org/issues/8446
+[Feature #8661]:  https://bugs.ruby-lang.org/issues/8661
+[Feature #8709]:  https://bugs.ruby-lang.org/issues/8709
+[Feature #8948]:  https://bugs.ruby-lang.org/issues/8948
+[Feature #9573]:  https://bugs.ruby-lang.org/issues/9573
+[Bug #10845]:     https://bugs.ruby-lang.org/issues/10845
+[Bug #12136]:     https://bugs.ruby-lang.org/issues/12136
+[Feature #12650]: https://bugs.ruby-lang.org/issues/12650
+[Bug #12706]:     https://bugs.ruby-lang.org/issues/12706
+[Feature #13767]: https://bugs.ruby-lang.org/issues/13767
+[Bug #13768]:     https://bugs.ruby-lang.org/issues/13768
+[Feature #14183]: https://bugs.ruby-lang.org/issues/14183
+[Bug #14266]:     https://bugs.ruby-lang.org/issues/14266
+[Feature #14267]: https://bugs.ruby-lang.org/issues/14267
+[Feature #14413]: https://bugs.ruby-lang.org/issues/14413
+[Bug #14541]:     https://bugs.ruby-lang.org/issues/14541
+[Feature #14722]: https://bugs.ruby-lang.org/issues/14722
+[Bug #15409]:     https://bugs.ruby-lang.org/issues/15409
+[Feature #15504]: https://bugs.ruby-lang.org/issues/15504
+[Feature #15575]: https://bugs.ruby-lang.org/issues/15575
+[Feature #15822]: https://bugs.ruby-lang.org/issues/15822
+[Misc #15893]:    https://bugs.ruby-lang.org/issues/15893
+[Feature #15921]: https://bugs.ruby-lang.org/issues/15921
+[Feature #15973]: https://bugs.ruby-lang.org/issues/15973
+[Feature #16131]: https://bugs.ruby-lang.org/issues/16131
+[Feature #16150]: https://bugs.ruby-lang.org/issues/16150
+[Feature #16166]: https://bugs.ruby-lang.org/issues/16166
+[Feature #16175]: https://bugs.ruby-lang.org/issues/16175
+[Feature #16233]: https://bugs.ruby-lang.org/issues/16233
+[Feature #16260]: https://bugs.ruby-lang.org/issues/16260
+[Feature #16274]: https://bugs.ruby-lang.org/issues/16274
+[Feature #16345]: https://bugs.ruby-lang.org/issues/16345
+[Feature #16377]: https://bugs.ruby-lang.org/issues/16377
+[Feature #16378]: https://bugs.ruby-lang.org/issues/16378
+[Feature #16555]: https://bugs.ruby-lang.org/issues/16555
+[Feature #16604]: https://bugs.ruby-lang.org/issues/16604
+[Feature #16614]: https://bugs.ruby-lang.org/issues/16614
+[Feature #16686]: https://bugs.ruby-lang.org/issues/16686
+[Feature #16746]: https://bugs.ruby-lang.org/issues/16746
+[Feature #16754]: https://bugs.ruby-lang.org/issues/16754
+[Feature #16786]: https://bugs.ruby-lang.org/issues/16786
+[Feature #16792]: https://bugs.ruby-lang.org/issues/16792
+[Feature #16815]: https://bugs.ruby-lang.org/issues/16815
+[Feature #16828]: https://bugs.ruby-lang.org/issues/16828
+[Misc #16961]:    https://bugs.ruby-lang.org/issues/16961
+[Bug #17030]:     https://bugs.ruby-lang.org/issues/17030
+[Feature #17055]: https://bugs.ruby-lang.org/issues/17055
+[Feature #17104]: https://bugs.ruby-lang.org/issues/17104
+[Feature #17122]: https://bugs.ruby-lang.org/issues/17122
+[Feature #17136]: https://bugs.ruby-lang.org/issues/17136
+[Feature #17176]: https://bugs.ruby-lang.org/issues/17176
+[Feature #17187]: https://bugs.ruby-lang.org/issues/17187
+[Bug #17221]:     https://bugs.ruby-lang.org/issues/17221
+[Feature #17260]: https://bugs.ruby-lang.org/issues/17260
+[Feature #17273]: https://bugs.ruby-lang.org/issues/17273
+[Feature #17303]: https://bugs.ruby-lang.org/issues/17303
+[Feature #17314]: https://bugs.ruby-lang.org/issues/17314
+[Feature #17322]: https://bugs.ruby-lang.org/issues/17322
+[Feature #17351]: https://bugs.ruby-lang.org/issues/17351
+[Feature #17371]: https://bugs.ruby-lang.org/issues/17371
+[Bug #17419]:     https://bugs.ruby-lang.org/issues/17419
+[GH-2991]:        https://github.com/ruby/ruby/pull/2991
diff --git a/README b/README
deleted file mode 100644
index 7e8370ec59..0000000000
--- a/README
+++ /dev/null
@@ -1,114 +0,0 @@
-* What's Ruby
-
-Ruby is the interpreted scripting language for quick and
-easy object-oriented programming.  It has many features to
-process text files and to do system management tasks (as in
-Perl).  It is simple, straight-forward, and extensible.
-
-
-* Features of Ruby
-
-  + Simple Syntax
-  + *Normal* Object-Oriented features(ex. class, method calls)
-  + *Advanced* Object-Oriented features(ex. Mix-in, Singleton-method)
-  + Operator Overloading
-  + Exception Handling
-  + Iterators and Closures
-  + Garbage Collection
-  + Dynamic Loading of Object files(on some architecture)
-  + Highly Portable (works on many Unix-like/POSIX compatible platforms
-    as well as Windows, Mac OS X, BeOS etc.)
-    cf. http://redmine.ruby-lang.org/wiki/ruby-19/SupportedPlatforms
-
-
-* How to get Ruby
-
-The Ruby distribution files can be found in the following FTP site:
-
-  ftp://ftp.ruby-lang.org/pub/ruby/
-
-The trunk of the Ruby source tree can be checked out with the
-following command:
-
-  $ svn co http://svn.ruby-lang.org/repos/ruby/trunk/ ruby
-
-There are some other branches under development.  Try the following
-command and see the list of branches:
-
-  $ svn ls http://svn.ruby-lang.org/repos/ruby/branches/
-
-
-* Ruby home-page
-
-The URL of the Ruby home-page is:
-
-   http://www.ruby-lang.org/
-
-
-* Mailing list
-
-There is a mailing list to talk about Ruby.
-To subscribe this list, please send the following phrase
-
-	subscribe YourFirstName YourFamilyName
-e.g.
-        subscribe Joseph Smith
-
-in the mail body (not subject) to the address <ruby-talk-ctl@ruby-lang.org>.
-
-
-* How to compile and install
-
-This is what you need to do to compile and install Ruby:
-
-  1. If ./configure does not exist or is older than configure.in,
-     run autoconf to (re)generate configure.
-
-  2. Run ./configure, which will generate config.h and Makefile.
-
-     Some C compiler flags may be added by default depending on your
-     environment.  Specify optflags=.. and warnflags=.. as necessary
-     to override them.
-
-  3. Edit defines.h if you need.  Usually this step will not be needed.
-
-  4. Remove comment mark(#) before the module names from ext/Setup (or
-     add module names if not present), if you want to link modules
-     statically.
-
-     If you don't want to compile non static extension modules
-     (probably on architectures which does not allow dynamic loading),
-     remove comment mark from the line "#option nodynamic" in
-     ext/Setup.
-
-  5. Run make.
-
-  6. Optionally, run 'make test' to check whether the compiled Ruby
-     interpreter works well.  If you see the message "test succeeded",
-     your ruby works as it should (hopefully).
-
-  7. Run 'make install'
-
-     You may have to be a super user to install ruby.
-
-If you fail to compile ruby, please send the detailed error report with
-the error log and machine/OS type, to help others.
-
-
-* Copying
-
-See the file COPYING.
-
-
-* The Author
-
-Feel free to send comments and bug reports to the author.  Here is the 
-author's latest mail address:
-
-  matz@netlab.jp
-
--------------------------------------------------------
-created at: Thu Aug  3 11:57:36 JST 1995
-Local variables:
-mode: indented-text
-end:
diff --git a/README.EXT b/README.EXT
index edfbf221a6..48b8d964c4 100644
--- a/README.EXT
+++ b/README.EXT
@@ -1,1326 +1 @@
-.\" README.EXT -  -*- Text -*- created at: Mon Aug  7 16:45:54 JST 1995
-
-This document explains how to make extension libraries for Ruby.
-
-1. Basic knowledge
-
-In C, variables have types and data do not have types.  In contrast,
-Ruby variables do not have a static type, and data themselves have
-types, so data will need to be converted between the languages.
-
-Data in Ruby are represented by the C type `VALUE'.  Each VALUE data
-has its data-type.
-
-To retrieve C data from a VALUE, you need to:
-
- (1) Identify the VALUE's data type
- (2) Convert the VALUE into C data
-
-Converting to the wrong data type may cause serious problems.
-
-
-1.1 Data-types
-
-The Ruby interpreter has the following data types:
-
-	T_NIL		nil
-	T_OBJECT	ordinary object
-	T_CLASS		class
-	T_MODULE	module
-	T_FLOAT		floating point number
-	T_STRING	string
-	T_REGEXP	regular expression
-	T_ARRAY		array
-	T_HASH		associative array
-	T_STRUCT	(Ruby) structure
-	T_BIGNUM	multi precision integer
-	T_FIXNUM	Fixnum(31bit or 63bit integer)
-	T_COMPLEX       complex number
-	T_RATIONAL      rational number
-	T_FILE		IO
-	T_TRUE		true
-	T_FALSE		false
-	T_DATA		data
-	T_SYMBOL        symbol
-
-In addition, there are several other types used internally:
-
-	T_ICLASS
-	T_MATCH
-	T_UNDEF
-	T_NODE
-	T_ZOMBIE
-
-Most of the types are represented by C structures.
-
-1.2 Check Data Type of the VALUE
-
-The macro TYPE() defined in ruby.h shows the data type of the VALUE.
-TYPE() returns the constant number T_XXXX described above.  To handle
-data types, your code will look something like this:
-
-  switch (TYPE(obj)) {
-    case T_FIXNUM:
-      /* process Fixnum */
-      break;
-    case T_STRING:
-      /* process String */
-      break;
-    case T_ARRAY:
-      /* process Array */
-      break;
-    default:
-      /* raise exception */
-      rb_raise(rb_eTypeError, "not valid value");
-      break;
-  }
-
-There is the data-type check function
-
-  void Check_Type(VALUE value, int type)
-
-which raises an exception if the VALUE does not have the type
-specified.
-
-There are also faster check macros for fixnums and nil.
-
-  FIXNUM_P(obj)
-  NIL_P(obj)
-
-1.3 Convert VALUE into C data
-
-The data for type T_NIL, T_FALSE, T_TRUE are nil, true, false
-respectively.  They are singletons for the data type.
-
-The T_FIXNUM data is a 31bit length fixed integer (63bit length on
-some machines), which can be converted to a C integer by using the
-FIX2INT() macro or FIX2LONG().  Though you have to check that the
-data is really FIXNUM before using them, they are faster.  FIX2LONG()
-never raises exceptions, but FIX2INT() raises RangeError if the
-result is bigger or smaller than the size of int.
-There are also NUM2INT() and NUM2LONG() which converts any Ruby
-numbers into C integers.  These macros includes a type check,
-so an exception will be raised if the conversion failed.  NUM2DBL()
-can be used to retrieve the double float value in the same way.
-
-In version 1.7 or later it is recommended that you use the new macros
-StringValue() and StringValuePtr() to get a char* from a VALUE.
-StringValue(var) replaces var's value with the result of "var.to_str()".
-StringValuePtr(var) does same replacement and returns char*
-representation of var.  These macros will skip the replacement if var
-is a String.  Notice that the macros take only the lvalue as their
-argument, to change the value of var in place.
-
-You can also use the macro named StringValueCStr(). This is just
-like StringValuePtr(), but always add nul character at the end of
-the result. If the result contains nul character, this macro causes
-the ArgumentError exception.
-StringValuePtr() doesn't gurantee to exist nul at the end of the
-result, and the result may contain nul.
-
-In version 1.6 or earlier, STR2CSTR() was used to do the same thing
-but now it is deprecated in version 1.7, because STR2CSTR() has a risk
-of a dangling pointer problem in the to_str() implicit conversion.
-
-Other data types have corresponding C structures, e.g. struct RArray
-for T_ARRAY etc. The VALUE of the type which has the corresponding
-structure can be cast to retrieve the pointer to the struct.  The
-casting macro will be of the form RXXXX for each data type; for
-instance, RARRAY(obj).  See "ruby.h".
-
-There are some accessing macros for structure members, for example
-`RSTRING_LEN(s)' to to get the size of the Ruby String object.  The
-allocated region can be accessed by `RSTRING_PTR(str).  For arrays, use
-`RARRAY_LEN(ary) and `RARRAY_PTR(ary) respectively.
-
-Notice: Do not change the value of the structure directly, unless you
-are responsible for the result.  This ends up being the cause of
-interesting bugs.
-
-1.4 Convert C data into VALUE
-
-To convert C data to Ruby values:
-
-  * FIXNUM
-
-    left shift 1 bit, and turn on LSB.
-
-  * Other pointer values
-
-    cast to VALUE.
-
-You can determine whether a VALUE is pointer or not by checking its LSB.  
-
-Notice Ruby does not allow arbitrary pointer values to be a VALUE.  They
-should be pointers to the structures which Ruby knows about.  The known
-structures are defined in <ruby.h>.
-
-To convert C numbers to Ruby values, use these macros.
-
-  INT2FIX()	for integers within 31bits.
-  INT2NUM()	for arbitrary sized integer.
-
-INT2NUM() converts an integer into a Bignum if it is out of the FIXNUM
-range, but is a bit slower.
-
-1.5 Manipulating Ruby data
-
-As I already mentioned, it is not recommended to modify an object's
-internal structure.  To manipulate objects, use the functions supplied
-by the Ruby interpreter. Some (not all) of the useful functions are
-listed below:
-
- String functions
-
-  rb_str_new(const char *ptr, long len)
-
-    Creates a new Ruby string.
-
-  rb_str_new2(const char *ptr)
-  rb_str_new_cstr(const char *ptr)
-
-    Creates a new Ruby string from a C string.  This is equivalent to
-    rb_str_new(ptr, strlen(ptr)).
-
-  rb_tainted_str_new(const char *ptr, long len)
-
-    Creates a new tainted Ruby string.  Strings from external data
-    sources should be tainted.
-
-  rb_tainted_str_new2(const char *ptr)
-  rb_tainted_str_new_cstr(const char *ptr)
-
-    Creates a new tainted Ruby string from a C string.
-
-  rb_sprintf(const char *format, ...)
-  rb_vsprintf(const char *format, va_list ap)
-
-    Creates a new Ruby string with printf(3) format.
-
-  rb_str_cat(VALUE str, const char *ptr, long len)
-
-    Appends len bytes of data from ptr to the Ruby string.
-
-  rb_str_cat2(VALUE str, const char* ptr)
-
-    Appends C string ptr to Ruby string str.  This function is
-    equivalent to rb_str_cat(str, ptr, strlen(ptr)).
-
-  rb_str_catf(VALUE str, const char* format, ...)
-  rb_str_vcatf(VALUE str, const char* format, va_list ap)
-
-    Appends C string format and successive arguments to Ruby string
-    str according to a printf-like format.  These functions are
-    equivalent to rb_str_cat2(str, rb_sprintf(format, ...)) and
-    rb_str_cat2(str, rb_vsprintf(format, ap)), respectively.
-
-  rb_enc_str_new(const char *ptr, long len, rb_encoding *enc)
-  
-    Creates a new Ruby string with the specified encoding.
-     
-  rb_usascii_str_new(const char *ptr, long len)
-  rb_usascii_str_new_cstr(const char *ptr)
-
-    Creates a new Ruby string with encoding US-ASCII.
-
- Array functions
-
-  rb_ary_new()
-
-    Creates an array with no elements.
-
-  rb_ary_new2(long len)
-
-    Creates an array with no elements, allocating internal buffer
-    for len elements.
-
-  rb_ary_new3(long n, ...)
-
-    Creates an n-element array from the arguments.
-
-  rb_ary_new4(long n, VALUE *elts)
-
-    Creates an n-element array from a C array.
-
-  rb_ary_to_ary(VALUE obj)
-
-    Converts the object into an array.
-    Equivalent to Object#to_ary.
-
- There are many functions to operate an array.
- They may dump core if other types are given.
-
-  rb_ary_aref(argc, VALUE *argv, VALUE ary)
-
-    Equivaelent to Array#[].
-
-  rb_ary_entry(VALUE ary, long offset)
-
-    ary[offset]
-
-  rb_ary_subseq(VALUE ary, long beg, long len)
-
-    ary[beg, len]
-
-  rb_ary_push(VALUE ary, VALUE val)
-  rb_ary_pop(VALUE ary)
-  rb_ary_shift(VALUE ary)
-  rb_ary_unshift(VALUE ary, VALUE val)
-
-
-2. Extending Ruby with C
-
-2.1 Adding new features to Ruby
-
-You can add new features (classes, methods, etc.) to the Ruby
-interpreter.  Ruby provides APIs for defining the following things:
-
- * Classes, Modules
- * Methods, Singleton Methods
- * Constants
-
-2.1.1 Class/module definition
-
-To define a class or module, use the functions below:
-
-  VALUE rb_define_class(const char *name, VALUE super)
-  VALUE rb_define_module(const char *name)
-
-These functions return the newly created class or module.  You may
-want to save this reference into a variable to use later.
-
-To define nested classes or modules, use the functions below:
-
-  VALUE rb_define_class_under(VALUE outer, const char *name, VALUE super)
-  VALUE rb_define_module_under(VALUE outer, const char *name)
-
-2.1.2 Method/singleton method definition
-
-To define methods or singleton methods, use these functions:
-
-  void rb_define_method(VALUE klass, const char *name, 
-		        VALUE (*func)(), int argc)
-
-  void rb_define_singleton_method(VALUE object, const char *name, 
-			          VALUE (*func)(), int argc)
-
-The `argc' represents the number of the arguments to the C function,
-which must be less than 17.  But I doubt you'll need that many.
-
-If `argc' is negative, it specifies the calling sequence, not number of
-the arguments.  
-
-If argc is -1, the function will be called as:
-
-  VALUE func(int argc, VALUE *argv, VALUE obj)
-
-where argc is the actual number of arguments, argv is the C array of
-the arguments, and obj is the receiver.
-
-If argc is -2, the arguments are passed in a Ruby array. The function
-will be called like:
-
-  VALUE func(VALUE obj, VALUE args)
-
-where obj is the receiver, and args is the Ruby array containing
-actual arguments.
-
-There are some more functions to define methods. One takes an ID
-as the name of method to be defined. See 2.2.2 for IDs.
-
-  void rb_define_method_id(VALUE klass, ID name, 
-                           VALUE (*func)(ANYARGS), int argc)
-
-There are two functions to define private/protected methods:
-
-  void rb_define_private_method(VALUE klass, const char *name, 
-			        VALUE (*func)(), int argc)
-  void rb_define_protected_method(VALUE klass, const char *name, 
-			          VALUE (*func)(), int argc)
-
-At last, rb_define_module_funcion defines a module functions, 
-which are private AND singleton methods of the module.
-For example, sqrt is the module function defined in Math module.
-It can be called in the following way:
-
-  Math.sqrt(4)
-
-or
-
-  include Math
-  sqrt(4)
-
-To define module functions, use:
-
-  void rb_define_module_function(VALUE module, const char *name, 
-				 VALUE (*func)(), int argc)
-
-Oh, in addition, function-like methods, which are private methods defined
-in the Kernel module, can be defined using:
-
-  void rb_define_global_function(const char *name, VALUE (*func)(), int argc)
-
-To define an alias for the method,
-
-  void rb_define_alias(VALUE module, const char* new, const char* old);
-
-To define an reader/writer to an attribute,
-
-  void rb_define_attr(VALUE klass, const char *name, int read, int write)
-
-To define and undefine the `allocate' class method,
-
-  void rb_define_alloc_func(VALUE klass, VALUE (*func)(VALUE klass));
-  void rb_undef_alloc_func(VALUE klass);
-
-func have to take the klass as the argument and return a newly
-allocated instance.  This instance should be empty as possible,
-without any expensive (including external) resources.
-
-2.1.3 Constant definition
-
-We have 2 functions to define constants:
-
-  void rb_define_const(VALUE klass, const char *name, VALUE val)
-  void rb_define_global_const(const char *name, VALUE val)
-
-The former is to define a constant under specified class/module.  The
-latter is to define a global constant.
-
-2.2 Use Ruby features from C
-
-There are several ways to invoke Ruby's features from C code.
-
-2.2.1 Evaluate Ruby Programs in a String
-
-The easiest way to use Ruby's functionality from a C program is to
-evaluate the string as Ruby program.  This function will do the job:
-
-  VALUE rb_eval_string(const char *str)
-
-Evaluation is done under the current context, thus current local variables
-of the innermost method (which is defined by Ruby) can be accessed.
-
-Note that the evaluation can raise an exception. There is a safer 
-function:
-
-  VALUE rb_eval_string_protect(const char *str, int *state)
-
-It returns nil when an error occur. And *state is zero if str was 
-successfully evaluated, or nonzero otherwise.
-
-
-2.2.2 ID or Symbol
-
-You can invoke methods directly, without parsing the string.  First I
-need to explain about ID.  ID is the integer number to represent
-Ruby's identifiers such as variable names.  The Ruby data type
-corresponding to ID is Symbol.  It can be accessed from Ruby in the
-form:
-
- :Identifier
-or
- :"any kind of string"
-
-You can get the ID value from a string within C code by using
-
-  rb_intern(const char *name)
-
-You can retrieve ID from Ruby object (Symbol or String) given as an
-argument by using
-
-  rb_to_id(VALUE symbol)
-
-You can convert C ID to Ruby Symbol by using
-
-  VALUE ID2SYM(ID id)
-
-and to convert Ruby Symbol object to ID, use
-
-  ID SYM2ID(VALUE symbol)
-
-2.2.3 Invoke Ruby method from C
-
-To invoke methods directly, you can use the function below
-
-  VALUE rb_funcall(VALUE recv, ID mid, int argc, ...)
-
-This function invokes a method on the recv, with the method name
-specified by the symbol mid.
-
-2.2.4 Accessing the variables and constants
-
-You can access class variables and instance variables using access
-functions.  Also, global variables can be shared between both
-environments.  There's no way to access Ruby's local variables.
-
-The functions to access/modify instance variables are below:
-
-  VALUE rb_ivar_get(VALUE obj, ID id)
-  VALUE rb_ivar_set(VALUE obj, ID id, VALUE val)
-
-id must be the symbol, which can be retrieved by rb_intern().
-
-To access the constants of the class/module:
-
-  VALUE rb_const_get(VALUE obj, ID id)
-
-See 2.1.3 for defining new constant.
-
-3. Information sharing between Ruby and C
-
-3.1 Ruby constants that C can be accessed from C
-
-The following Ruby constants can be referred from C.
-
-  Qtrue
-  Qfalse
-
-Boolean values.  Qfalse is false in C also (i.e. 0).
-
-  Qnil
-
-Ruby nil in C scope.
-
-3.2 Global variables shared between C and Ruby
-
-Information can be shared between the two environments using shared global
-variables.  To define them, you can use functions listed below:
-
-  void rb_define_variable(const char *name, VALUE *var)
-
-This function defines the variable which is shared by both environments.
-The value of the global variable pointed to by `var' can be accessed
-through Ruby's global variable named `name'.
-
-You can define read-only (from Ruby, of course) variables using the
-function below.
-
-  void rb_define_readonly_variable(const char *name, VALUE *var)
-
-You can defined hooked variables.  The accessor functions (getter and
-setter) are called on access to the hooked variables.
-
-  void rb_define_hooked_variable(const char *name, VALUE *var,
-				 VALUE (*getter)(), void (*setter)())
-
-If you need to supply either setter or getter, just supply 0 for the
-hook you don't need.  If both hooks are 0, rb_define_hooked_variable()
-works just like rb_define_variable().
-
-The prototypes of the getter and setter functions are as follows:
-
-  VALUE (*getter)(ID id, VALUE *var);
-  void (*setter)(VALUE val, ID id, VALUE *var);
-
-
-Also you can define a Ruby global variable without a corresponding C
-variable.  The value of the variable will be set/get only by hooks.
-
-  void rb_define_virtual_variable(const char *name,
-				  VALUE (*getter)(), void (*setter)())
-
-The prototypes of the getter and setter functions are as follows:
-
-  VALUE (*getter)(ID id);
-  void (*setter)(VALUE val, ID id);
-
-
-3.3 Encapsulate C data into a Ruby object
-
-To wrap and objectify a C pointer as a Ruby object (so called
-DATA), use Data_Wrap_Struct().
-
-  Data_Wrap_Struct(klass, mark, free, ptr)
-
-Data_Wrap_Struct() returns a created DATA object.  The klass argument
-is the class for the DATA object.  The mark argument is the function
-to mark Ruby objects pointed by this data.  The free argument is the
-function to free the pointer allocation.  If this is -1, the pointer
-will be just freed.  The functions mark and free will be called from
-garbage collector.
-
-These mark / free functions are invoked during GC execution.  No
-object allocations are allowed during it, so do not allocate ruby
-objects inside them.
-
-You can allocate and wrap the structure in one step.
-
-  Data_Make_Struct(klass, type, mark, free, sval)
-
-This macro returns an allocated Data object, wrapping the pointer to
-the structure, which is also allocated.  This macro works like:
-
-  (sval = ALLOC(type), Data_Wrap_Struct(klass, mark, free, sval))
-
-Arguments klass, mark, and free work like their counterparts in
-Data_Wrap_Struct().  A pointer to the allocated structure will be
-assigned to sval, which should be a pointer of the type specified.
-
-To retrieve the C pointer from the Data object, use the macro
-Data_Get_Struct().
-
-  Data_Get_Struct(obj, type, sval)
-
-A pointer to the structure will be assigned to the variable sval.
-
-See the example below for details. 
-
-4. Example - Creating dbm extension
-
-OK, here's the example of making an extension library.  This is the
-extension to access DBMs.  The full source is included in the ext/
-directory in the Ruby's source tree.
-
-(1) make the directory
-
-  % mkdir ext/dbm
-
-Make a directory for the extension library under ext directory.
-
-(2) design the library
-
-You need to design the library features, before making it.
-
-(3) write C code.
-
-You need to write C code for your extension library.  If your library
-has only one source file, choosing ``LIBRARY.c'' as a file name is
-preferred.  On the other hand, in case your library has multiple source
-files, avoid choosing ``LIBRARY.c'' for a file name.  It may conflict
-with an intermediate file ``LIBRARY.o'' on some platforms.
-
-Ruby will execute the initializing function named ``Init_LIBRARY'' in
-the library.  For example, ``Init_dbm()'' will be executed when loading
-the library.
-
-Here's the example of an initializing function.
-
---
-void
-Init_dbm(void)
-{
-    /* define DBM class */
-    cDBM = rb_define_class("DBM", rb_cObject);
-    /* DBM includes Enumerate module */
-    rb_include_module(cDBM, rb_mEnumerable);
-
-    /* DBM has class method open(): arguments are received as C array */
-    rb_define_singleton_method(cDBM, "open", fdbm_s_open, -1);
-
-    /* DBM instance method close(): no args */
-    rb_define_method(cDBM, "close", fdbm_close, 0);
-    /* DBM instance method []: 1 argument */
-    rb_define_method(cDBM, "[]", fdbm_fetch, 1);
-		:
-
-    /* ID for a instance variable to store DBM data */
-    id_dbm = rb_intern("dbm");
-}
---
-
-The dbm extension wraps the dbm struct in the C environment using 
-Data_Make_Struct.
-
---
-struct dbmdata {
-    int  di_size;
-    DBM *di_dbm;
-};
-
-
-obj = Data_Make_Struct(klass, struct dbmdata, 0, free_dbm, dbmp);
---
-
-This code wraps the dbmdata structure into a Ruby object.  We avoid
-wrapping DBM* directly, because we want to cache size information.
-
-To retrieve the dbmdata structure from a Ruby object, we define the
-following macro:
-
---
-#define GetDBM(obj, dbmp) {\
-    Data_Get_Struct(obj, struct dbmdata, dbmp);\
-    if (dbmp->di_dbm == 0) closed_dbm();\
-}
---
-
-This sort of complicated macro does the retrieving and close checking for
-the DBM.
-
-There are three kinds of way to receive method arguments.  First,
-methods with a fixed number of arguments receive arguments like this:
-
---
-static VALUE
-fdbm_delete(VALUE obj, VALUE keystr)
-{
-	:
-}
---
-
-The first argument of the C function is the self, the rest are the
-arguments to the method.
-
-Second, methods with an arbitrary number of arguments receive
-arguments like this:
-
---
-static VALUE
-fdbm_s_open(int argc, VALUE *argv, VALUE klass)
-{
-	:
-    if (rb_scan_args(argc, argv, "11", &file, &vmode) == 1) {
-	mode = 0666;		/* default value */
-    }
-	:
-}
---
-
-The first argument is the number of method arguments, the second
-argument is the C array of the method arguments, and the third
-argument is the receiver of the method.
-
-You can use the function rb_scan_args() to check and retrieve the
-arguments.  For example, "11" means that the method requires at least one
-argument, and at most receives two arguments.
-
-Methods with an arbitrary number of arguments can receive arguments
-by Ruby's array, like this:
-
---
-static VALUE
-fdbm_indexes(VALUE obj, VALUE args)
-{
-	:
-}
---
-
-The first argument is the receiver, the second one is the Ruby array
-which contains the arguments to the method.
-
-** Notice
-
-GC should know about global variables which refer to Ruby's objects, but
-are not exported to the Ruby world.  You need to protect them by
-
-  void rb_global_variable(VALUE *var)
-
-(4) prepare extconf.rb
-
-If the file named extconf.rb exists, it will be executed to generate
-Makefile.
-
-extconf.rb is the file for checking compilation conditions etc.  You
-need to put
-
-  require 'mkmf'
-
-at the top of the file.  You can use the functions below to check
-various conditions.
-
-  have_library(lib, func): check whether library containing function exists.
-  have_func(func, header): check whether function exists
-  have_header(header): check whether header file exists
-  create_makefile(target): generate Makefile
-
-The value of the variables below will affect the Makefile.
-
-  $CFLAGS: included in CFLAGS make variable (such as -O)
-  $CPPFLAGS: included in CPPFLAGS make variable (such as -I, -D)
-  $LDFLAGS: included in LDFLAGS make variable (such as -L)
-  $objs: list of object file names
-
-Normally, the object files list is automatically generated by searching
-source files, but you must define them explicitly if any sources will
-be generated while building.
-
-If a compilation condition is not fulfilled, you should not call
-``create_makefile''.  The Makefile will not be generated, compilation will
-not be done.
-
-(5) prepare depend (optional)
-
-If the file named depend exists, Makefile will include that file to
-check dependencies.  You can make this file by invoking
-
-  % gcc -MM *.c > depend
-
-It's harmless.  Prepare it.
-
-(6) generate Makefile
-
-Try generating the Makefile by:
-
-  ruby extconf.rb
-
-If the library should be installed under vendor_ruby directory
-instead of site_ruby directory, use --vendor option as follows.
-
-  ruby extconf.rb --vendor
-
-You don't need this step if you put the extension library under the ext
-directory of the ruby source tree.  In that case, compilation of the
-interpreter will do this step for you.
-
-(7) make
-
-Type
-
-  make
-
-to compile your extension.  You don't need this step either if you have
-put the extension library under the ext directory of the ruby source tree.
-
-(8) debug
-
-You may need to rb_debug the extension.  Extensions can be linked
-statically by adding the directory name in the ext/Setup file so that
-you can inspect the extension with the debugger.
-
-(9) done, now you have the extension library
-
-You can do anything you want with your library.  The author of Ruby
-will not claim any restrictions on your code depending on the Ruby API.
-Feel free to use, modify, distribute or sell your program.
-
-Appendix A. Ruby source files overview
-
-ruby language core
-
-  class.c         : classes and modules
-  error.c         : exception classes and exception mechanism
-  gc.c            : memory management
-  load.c          : library loading
-  object.c        : objects
-  variable.c      : variables and constants
-
-ruby syntax parser
-  parse.y
-    -> parse.c    : automatically generated
-  keywords        : reserved keywords
-    -> lex.c      : automatically generated
-
-ruby evaluator (a.k.a. YARV)
-  blockinlining.c
-  compile.c
-  eval.c
-  eval_error.c
-  eval_jump.c
-  eval_safe.c
-  insns.def           : definition of VM instructions
-  iseq.c              : implementation of VM::ISeq
-  thread.c            : thread management and context swiching
-  thread_win32.c      : thread implementation
-  thread_pthread.c    : ditto
-  vm.c
-  vm_dump.c
-  vm_eval.c
-  vm_exec.c
-  vm_insnhelper.c
-  vm_method.c
-
-  opt_insns_unif.def  : instruction unification
-  opt_operand.def     : definitions for optimization
-
-    -> insn*.inc      : automatically generated
-    -> opt*.inc       : automatically generated
-    -> vm.inc         : automatically generated
-
-regular expression engine (oniguruma)
-  regex.c
-  regcomp.c
-  regenc.c
-  regerror.c
-  regexec.c
-  regparse.c
-  regsyntax.c
-
-utility functions
-
-  debug.c       : debug symbols for C debuggger
-  dln.c         : dynamic loading
-  st.c          : general purpose hash table
-  strftime.c    : formatting times
-  util.c        : misc utilities
-
-ruby interpreter implementation
-
-  dmyext.c
-  dmydln.c 
-  dmyencoding.c
-  id.c
-  inits.c
-  main.c
-  ruby.c
-  version.c
-
-  gem_prelude.rb
-  prelude.rb
-
-
-class library
-
-  array.c       : Array
-  bignum.c      : Bignum
-  compar.c      : Comparable
-  complex.c     : Complex
-  cont.c        : Fiber, Continuation
-  dir.c         : Dir
-  enum.c        : Enumerable
-  enumerator.c  : Enumerator
-  file.c        : File
-  hash.c        : Hash
-  io.c          : IO
-  marshal.c     : Marshal
-  math.c        : Math
-  numeric.c     : Numeric, Integer, Fixnum, Float
-  pack.c        : Array#pack, String#unpack
-  proc.c        : Binding, Proc
-  process.c     : Process
-  random.c      : random number
-  range.c       : Range
-  rational.c    : Rational
-  re.c          : Regexp, MatchData
-  signal.c      : Signal
-  sprintf.c     : 
-  string.c      : String
-  struct.c      : Struct
-  time.c        : Time
-
-  defs/knwon_errors.def  : Errno::* exception classes
-    -> known_errors.inc  : automatically generated
-
-multilingualization
-  encoding.c    : Encoding
-  transcode.c   : Encoding::Converter
-  enc/*.c       : encoding classes
-  enc/trans/*   : codepoint mapping tables
-
-goruby interpreter implementation
-  
-  goruby.c
-  golf_prelude.rb     : goruby specific libraries.
-    -> golf_prelude.c : automatically generated
-
-
-Appendix B. Ruby extension API reference
-
-** Types
-
- VALUE
-
-The type for the Ruby object.  Actual structures are defined in ruby.h,
-such as struct RString, etc.  To refer the values in structures, use
-casting macros like RSTRING(obj).
-
-** Variables and constants
-
- Qnil
-
-const: nil object
-
- Qtrue
-
-const: true object(default true value)
-
- Qfalse
-
-const: false object
-
-** C pointer wrapping
-
- Data_Wrap_Struct(VALUE klass, void (*mark)(), void (*free)(), void *sval)
-
-Wrap a C pointer into a Ruby object.  If object has references to other
-Ruby objects, they should be marked by using the mark function during
-the GC process.  Otherwise, mark should be 0.  When this object is no
-longer referred by anywhere, the pointer will be discarded by free
-function.
-
- Data_Make_Struct(klass, type, mark, free, sval)
-
-This macro allocates memory using malloc(), assigns it to the variable
-sval, and returns the DATA encapsulating the pointer to memory region.
-
- Data_Get_Struct(data, type, sval)
-
-This macro retrieves the pointer value from DATA, and assigns it to
-the variable sval. 
-
-** Checking data types
-
-TYPE(value)
-FIXNUM_P(value)
-NIL_P(value)
-void Check_Type(VALUE value, int type)
-void Check_SafeStr(VALUE value)
-
-** Data type conversion
-
-FIX2INT(value)
-FIX2LONG(value)
-INT2FIX(i)
-NUM2INT(value)
-NUM2LONG(value)
-INT2NUM(i)
-NUM2DBL(value)
-rb_float_new(f)
-StringValue(value)
-StringValuePtr(value)
-StringValueCStr(value)
-rb_str_new2(s)
-
-** defining class/module
-
- VALUE rb_define_class(const char *name, VALUE super)
-
-Defines a new Ruby class as a subclass of super.
-
- VALUE rb_define_class_under(VALUE module, const char *name, VALUE super)
-
-Creates a new Ruby class as a subclass of super, under the module's
-namespace.
-
- VALUE rb_define_module(const char *name)
-
-Defines a new Ruby module.
-
- VALUE rb_define_module_under(VALUE module, const char *name)
-
-Defines a new Ruby module under the module's namespace.
-
- void rb_include_module(VALUE klass, VALUE module)
-
-Includes module into class.  If class already includes it, just
-ignored.
-
- void rb_extend_object(VALUE object, VALUE module)
-
-Extend the object with the module's attributes.
-
-** Defining Global Variables
-
- void rb_define_variable(const char *name, VALUE *var)
-
-Defines a global variable which is shared between C and Ruby.  If name
-contains a character which is not allowed to be part of the symbol,
-it can't be seen from Ruby programs.
-
- void rb_define_readonly_variable(const char *name, VALUE *var)
-
-Defines a read-only global variable.  Works just like
-rb_define_variable(), except the defined variable is read-only.
-
- void rb_define_virtual_variable(const char *name,
-				 VALUE (*getter)(), VALUE (*setter)())
-
-Defines a virtual variable, whose behavior is defined by a pair of C
-functions.  The getter function is called when the variable is
-referenced.  The setter function is called when the variable is set to a
-value.  The prototype for getter/setter functions are:
-
-	VALUE getter(ID id)
-	void setter(VALUE val, ID id)
-
-The getter function must return the value for the access.
-
- void rb_define_hooked_variable(const char *name, VALUE *var,
-				VALUE (*getter)(), VALUE (*setter)())
-
-Defines hooked variable.  It's a virtual variable with a C variable.  
-The getter is called as
-
-	VALUE getter(ID id, VALUE *var)
-
-returning a new value.  The setter is called as
-
-	void setter(VALUE val, ID id, VALUE *var)
-
-GC requires C global variables which hold Ruby values to be marked.
-
- void rb_global_variable(VALUE *var)
-
-Tells GC to protect these variables.
-
-** Constant Definition
-
- void rb_define_const(VALUE klass, const char *name, VALUE val)
-
-Defines a new constant under the class/module.
-
- void rb_define_global_const(const char *name, VALUE val)
-
-Defines a global constant.  This is just the same as
-
-     rb_define_const(cKernal, name, val)
-
-** Method Definition
-
- rb_define_method(VALUE klass, const char *name, VALUE (*func)(), int argc)
-
-Defines a method for the class.  func is the function pointer.  argc
-is the number of arguments.  if argc is -1, the function will receive
-3 arguments: argc, argv, and self.  if argc is -2, the function will
-receive 2 arguments, self and args, where args is a Ruby array of
-the method arguments.
-
- rb_define_private_method(VALUE klass, const char *name, VALUE (*func)(), int argc)
-
-Defines a private method for the class.  Arguments are same as
-rb_define_method().
-
- rb_define_singleton_method(VALUE klass, const char *name, VALUE (*func)(), int argc)
-
-Defines a singleton method.  Arguments are same as rb_define_method().
-
- rb_scan_args(int argc, VALUE *argv, const char *fmt, ...)
-
-Retrieve argument from argc, argv.  The fmt is the format string for
-the arguments, such as "12" for 1 non-optional argument, 2 optional
-arguments.  If `*' appears at the end of fmt, it means the rest of
-the arguments are assigned to the corresponding variable, packed in
-an array.
-
-** Invoking Ruby method
-
- VALUE rb_funcall(VALUE recv, ID mid, int narg, ...)
-
-Invokes a method.  To retrieve mid from a method name, use rb_intern().
-
- VALUE rb_funcall2(VALUE recv, ID mid, int argc, VALUE *argv)
-
-Invokes a method, passing arguments by an array of values.
-
- VALUE rb_eval_string(const char *str)
-
-Compiles and executes the string as a Ruby program.
-
- ID rb_intern(const char *name)
-
-Returns ID corresponding to the name.
-
- char *rb_id2name(ID id)
-
-Returns the name corresponding ID.
-
- char *rb_class2name(VALUE klass)
-
-Returns the name of the class.
-
- int rb_respond_to(VALUE object, ID id)
-
-Returns true if the object responds to the message specified by id.
-
-** Instance Variables
-
- VALUE rb_iv_get(VALUE obj, const char *name)
-
-Retrieve the value of the instance variable.  If the name is not
-prefixed by `@', that variable shall be inaccessible from Ruby.
-
- VALUE rb_iv_set(VALUE obj, const char *name, VALUE val)
-
-Sets the value of the instance variable.
-
-** Control Structure
-
- VALUE rb_iterate(VALUE (*func1)(), void *arg1, VALUE (*func2)(), void *arg2)
-
-Calls the function func1, supplying func2 as the block.  func1 will be
-called with the argument arg1.  func2 receives the value from yield as
-the first argument, arg2 as the second argument.
- 
- VALUE rb_yield(VALUE val)
-
-Evaluates the block with value val.
-
- VALUE rb_rescue(VALUE (*func1)(), void *arg1, VALUE (*func2)(), void *arg2)
-
-Calls the function func1, with arg1 as the argument.  If an exception
-occurs during func1, it calls func2 with arg2 as the argument.  The
-return value of rb_rescue() is the return value from func1 if no
-exception occurs, from func2 otherwise.
-
- VALUE rb_ensure(VALUE (*func1)(), void *arg1, void (*func2)(), void *arg2)
-
-Calls the function func1 with arg1 as the argument, then calls func2
-with arg2 if execution terminated.  The return value from
-rb_ensure() is that of func1.
-
-** Exceptions and Errors
-
- void rb_warn(const char *fmt, ...)
-
-Prints a warning message according to a printf-like format.
-
- void rb_warning(const char *fmt, ...)
-
-Prints a warning message according to a printf-like format, if
-$VERBOSE is true.
-
-void rb_raise(rb_eRuntimeError, const char *fmt, ...)
-
-Raises RuntimeError.  The fmt is a format string just like printf().
-
- void rb_raise(VALUE exception, const char *fmt, ...)
-
-Raises a class exception.  The fmt is a format string just like printf().
-
- void rb_fatal(const char *fmt, ...)
-
-Raises a fatal error, terminates the interpreter.  No exception handling
-will be done for fatal errors, but ensure blocks will be executed.
-
- void rb_bug(const char *fmt, ...)
-
-Terminates the interpreter immediately.  This function should be
-called under the situation caused by the bug in the interpreter.  No
-exception handling nor ensure execution will be done.
-
-** Initialize and Start the Interpreter
-
-The embedding API functions are below (not needed for extension libraries):
-
- void ruby_init()
-
-Initializes the interpreter.
-
- void ruby_options(int argc, char **argv)
-
-Process command line arguments for the interpreter.
-
- void ruby_run()
-
-Starts execution of the interpreter.
-
- void ruby_script(char *name)
-
-Specifies the name of the script ($0).
-
-** Hooks for the Interpreter Events
-
- void rb_add_event_hook(rb_event_hook_func_t func, rb_event_t events)
-
-Adds a hook function for the specified interpreter events.
-events should be Or'ed value of:
-
-	RUBY_EVENT_LINE
-	RUBY_EVENT_CLASS
-	RUBY_EVENT_END
-	RUBY_EVENT_CALL
-	RUBY_EVENT_RETURN
-	RUBY_EVENT_C_CALL
-	RUBY_EVENT_C_RETURN
-	RUBY_EVENT_RAISE
-	RUBY_EVENT_ALL
-
-The definition of rb_event_hook_func_t is below:
-
- typedef void (*rb_event_hook_func_t)(rb_event_t event, NODE *node,
- 				      VALUE self, ID id, VALUE klass)
-
- int rb_remove_event_hook(rb_event_hook_func_t func)
-
-Removes the specified hook function.
-
-Appendix C. Functions Available in extconf.rb
-
-These functions are available in extconf.rb:
-
- have_macro(macro, headers)
-
-Checks whether macro is defined with header.  Returns true if the macro
-is defined.
-
- have_library(lib, func)
-
-Checks whether the library exists, containing the specified function.
-Returns true if the library exists.
-
- find_library(lib, func, path...)
-
-Checks whether a library which contains the specified function exists in
-path.  Returns true if the library exists.
-
- have_func(func, header)
-
-Checks whether func exists with header.  Returns true if the function
-exists.  To check functions in an additional library, you need to
-check that library first using have_library().
-
- have_var(var, header)
-
-Checks whether var exists with header.  Returns true if the variable
-exists.  To check variables in an additional library, you need to
-check that library first using have_library().
-
- have_header(header)
-
-Checks whether header exists.  Returns true if the header file exists.
-
- find_header(header, path...)
-
-Checks whether header exists in path.  Returns true if the header file
-exists.
-
- have_struct_member(type, member, header)
-
-Checks whether type has member with header.  Returns true if the type
-is defined and has the member.
-
- have_type(type, header, opt)
-
-Checks whether type is defined with header.  Returns true if the type
-is defined.
-
- check_sizeof(type, header)
-
-Checks the size of type in char with header.  Returns the size if the
-type is defined, otherwise nil.
-
- create_makefile(target)
-
-Generates the Makefile for the extension library.  If you don't invoke
-this method, the compilation will not be done.
-
- find_executable(bin, path)
-
-Finds command in path, which is File::PATH_SEPARATOR-separated list of
-directories.  If path is nil or omitted, environment variable PATH
-will be used.  Returns the path name of the command if it is found,
-otherwise nil.
-
- with_config(withval[, default=nil])
-
-Parses the command line options and returns the value specified by
---with-<withval>.
-
- enable_config(config, *defaults)
- disable_config(config, *defaults)
-
-Parses the command line options for boolean.  Returns true if
---enable-<config> is given, or false if --disable-<config> is given.
-Otherwise, yields defaults to the given block and returns the result
-if it is called with a block, or returns defaults.
-
- dir_config(target[, default_dir])
- dir_config(target[, default_include, default_lib])
-
-Parses the command line options and adds the directories specified by
---with-<target>-dir, --with-<target>-include, and/or --with-<target>-lib
-to $CFLAGS and/or $LDFLAGS.  --with-<target>-dir=/path is equivalent to
---with-<target>-include=/path/include --with-<target>-lib=/path/lib.
-Returns an array of the added directories ([include_dir, lib_dir]).
-
- pkg_config(pkg)
-
-Obtains the information for pkg by pkg-config command.  The actual
-command name can be overridden by --with-pkg-config command line
-option.
-
-/*
- * Local variables:
- * fill-column: 70
- * end:
- */
+Moved to doc/extension.rdoc
diff --git a/README.EXT.ja b/README.EXT.ja
index 9a8a4fd610..f884ecbb0e 100644
--- a/README.EXT.ja
+++ b/README.EXT.ja
@@ -1,1447 +1 @@
-.\" README.EXT.ja -  -*- Text -*- created at: Mon Aug  7 16:45:54 JST 1995
-
-Ruby�γ�ĥ�饤�֥��κ�������������ޤ���
-
-1�������μ�
-
-C���ѿ��ˤϷ������ꡤ�ǡ����ˤϷ�������ޤ��󡥤Ǥ����顤��
-�Ȥ��Хݥ��󥿤�int���ѿ�����������ȡ������ͤ������Ȥ��Ƽ�
-�갷���ޤ����դ�Ruby���ѿ��ˤϷ����ʤ����ǡ����˷��������
-�������ΰ㤤�Τ��ᡤC��Ruby����ߤ��Ѵ����ʤ���С����ߤ���
-�ǡ����򥢥������Ǥ��ޤ���
-
-Ruby�Υǡ�����VALUE�Ȥ���C�η���ɽ������ޤ���VALUE���Υǡ�
-���Ϥ��Υǡ��������פ�ʬ���ΤäƤ��ޤ������Υǡ��������פ�
-�����Τϥǡ���(���֥�������)�μºݤι�¤���̣���Ƥ��ơ�Ruby
-�Υ��饹�ȤϤޤ���ä���ΤǤ���
-
-VALUE����C�ˤȤäư�̣�Τ���ǡ�������Ф�����ˤ�
-
- (1) VALUE�Υǡ��������פ��Τ�
- (2) VALUE��C�Υǡ������Ѵ�����
-
-��ξ����ɬ�פǤ���(1)��˺���ȴְ�ä��ǡ������Ѵ����Ԥ��
-�ơ��ǰ��ץ�����बcore dump���ޤ���
-
-1.1 �ǡ���������
-
-Ruby�ˤϥ桼�����Ȥ���ǽ���Τ���ʲ��Υ����פ�����ޤ���
-
-	T_NIL		nil
-	T_OBJECT	�̾�Υ��֥�������
-	T_CLASS		���饹
-	T_MODULE	�⥸�塼��
-	T_FLOAT		��ư��������
-	T_STRING	ʸ����
-	T_REGEXP	����ɽ��
-	T_ARRAY		����
-	T_HASH		Ϣ������
-	T_STRUCT	(Ruby��)��¤��
-	T_BIGNUM	¿��Ĺ����
-	T_FIXNUM	Fixnum(31bit�ޤ���63bitĹ����)
-	T_COMPLEX	ʣ�ǿ�
-	T_RATIONAL	ͭ����
-	T_FILE		������
-	T_TRUE		��
-	T_FALSE		��
-	T_DATA		�ǡ���
-	T_SYMBOL	����ܥ�
-
-����¾�����������Ѥ���Ƥ���ʲ��Υ����פ�����ޤ���
-
-	T_ICLASS
-	T_MATCH
-	T_UNDEF
-	T_NODE
-	T_ZOMBIE
-
-�ۤȤ�ɤΥ����פ�C�ι�¤�ΤǼ�������Ƥ��ޤ���
-
-1.2 VALUE�Υǡ��������פ�����å�����
-
-ruby.h�Ǥ�TYPE()�Ȥ����ޥ������������Ƥ��ơ�VALUE�Υǡ���
-�����פ��Τ뤳�Ȥ�����ޤ���TYPE()�ޥ����Ͼ�ǾҲ𤷤�T_XXXX
-�η�����������֤��ޤ���VALUE�Υǡ��������פ˱����ƽ�������
-���ˤϡ�TYPE()���ͤ�ʬ�����뤳�Ȥˤʤ�ޤ���
-
-  switch (TYPE(obj)) {
-    case T_FIXNUM:
-      /* FIXNUM��� */
-      break;
-    case T_STRING:
-      /* ʸ����ν��� */
-      break;
-    case T_ARRAY:
-      /* ������ */
-      break;
-    default:
-      /* �㳰��ȯ�������� */
-      rb_raise(rb_eTypeError, "not valid value");
-      break;
-  }
-
-����ȥǡ��������פ�����å����ơ��������ʤ�����㳰��ȯ����
-��ؿ����Ѱդ���Ƥ��ޤ���
-
-  void Check_Type(VALUE value, int type)
-
-���δؿ���value��type��̵����С��㳰��ȯ�������ޤ���������
-����Ϳ����줿VALUE�Υǡ��������פ����������ɤ��������å���
-�뤿��ˤϡ����δؿ���Ȥ��ޤ���
-
-FIXNUM��NIL�˴ؤ��ƤϤ���®��Ƚ�̥ޥ������Ѱդ���Ƥ��ޤ���
-
-  FIXNUM_P(obj)
-  NIL_P(obj)
-
-1.3 VALUE��C�Υǡ������Ѵ�����
-
-�ǡ��������פ�T_NIL��T_FALSE��T_TRUE�Ǥ�������ǡ����Ϥ��줾
-��nil��false��true�Ǥ������Υǡ��������פΥ��֥������ȤϤҤ�
-�Ĥ��Ĥ���¸�ߤ��ޤ���
-
-�ǡ��������פ�T_FIXNUM�λ��������31bit�ޤ���63bit�Υ�������
-���������Ǥ���long�Υ�������32bit�Υץ�åȥե�����Ǥ����
-31bit�ˡ�long�Υ�������64bit�Υץ�åȥե�����Ǥ����63bit
-�ˤʤ�ޤ�. FIXNUM �� C ���������Ѵ����뤿��ˤϥޥ���
-��FIX2INT()�פޤ��ϡ�FIX2LONG()�פ�Ȥ��ޤ��������Υޥ���
-����Ѥ���ݤˤϻ����˥ǡ��������פ�FIXNUM�Ǥ��뤳�Ȥ��ǧ��
-��ɬ�פ�����ޤ��������Ū��®���Ѵ���Ԥ����Ȥ��Ǥ��ޤ�����
-������FIX2LONG()�פ��㳰��ȯ�����ޤ��󤬡���FIX2INT()�פ���
-����̤�int�Υ������˼��ޤ�ʤ����ˤ��㳰��ȯ�����ޤ���
-���줫�顤FIXNUM�˸¤餺Ruby�Υǡ������������Ѵ�����
-��NUM2INT()�פ���ӡ�NUM2LONG()�פȤ����ޥ���������ޤ�����
-���Υޥ����ϥޥ����ϥǡ��������פΥ����å�̵���ǻȤ��ޤ�
-(�������Ѵ��Ǥ��ʤ����ˤ��㳰��ȯ������)��Ʊ�ͤ˥����å�̵
-�ǻȤ����Ѵ��ޥ�����double����Ф���NUM2DBL()�פ�����ޤ���
-
-char* ����Ф���硤version 1.6 �����Ǥϡ�STR2CSTR()�פȤ�
-���ޥ�����ȤäƤ��ޤ������������ to_str() �ˤ����ۤη���
-����̤� GC ������ǽ�������뤿�ᡤversion 1.7 �ʹߤǤ�
-obsolete �Ȥʤꡤ����� StringValue() �� StringValuePtr() 
-��Ȥ�����侩���Ƥ��ޤ���StringValue(var) �� var �� String 
-�Ǥ���в��⤻���������Ǥʤ���� var �� var.to_str() �η��
-���֤�������ޥ�����StringValuePtr(var) ��Ʊ�ͤ� var ��
-String ���֤������Ƥ��� var �ΥХ�����ɽ�����Ф��� char* ��
-�֤��ޥ����Ǥ���var �����Ƥ�ľ���֤����������������Τǡ�
-var �� lvalue �Ǥ���ɬ�פ�����ޤ���
-�ޤ���StringValuePtr() ��������� StringValueCStr() �Ȥ�����
-�����⤢��ޤ���StringValueCStr(var) �� var �� String ���֤�
-�����Ƥ��� var ��ʸ����ɽ�����Ф��� char* ���֤��ޤ����֤���
-��ʸ����������ˤ� nul ʸ�����ղä���ޤ����ʤ�������� nul
-ʸ�����ޤޤ����� ArgumentError ��ȯ�����ޤ���
-������StringValuePtr() �Ǥϡ������� nul ʸ���������ݾڤϤʤ���
-����� nul ʸ�����ޤޤ�Ƥ����ǽ���⤢��ޤ���
-
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-�빽¤�ΤΤ���VALUE�Ϥ��Τޤޥ��㥹��(���Ѵ�)����й�¤�Τ�
-�ݥ��󥿤��Ѵ��Ǥ��ޤ���
-
-��¤�Τϡ�struct RXxxxx�פȤ���̾����ruby.h���������Ƥ���
-�����㤨��ʸ����ϡ�struct RString�פǤ����ºݤ˻Ȥ���ǽ����
-����Τ�ʸ��������󤯤餤���Ȼפ��ޤ���
-
-ruby.h�ǤϹ�¤�Τإ��㥹�Ȥ���ޥ������RXXXXX()��(������ʸ
-���ˤ������)�Ȥ���̾�����󶡤���Ƥ��ޤ�(��: RSTRING())��
-
-��¤�Τ���ǡ�������Ф��ޥ������󶡤���Ƥ��ޤ���ʸ����
-str��Ĺ�������뤿��ˤϡ�RSTRING_LEN(str)�פȤ���ʸ����str��
-char*�Ȥ������뤿��ˤϡ�RSTRING_PTR(str)�פȤ��ޤ��������
-���ˤϡ����줾���RARRAY_LEN(ary)�ס���RARRAY_PTR(ary)�פ�
-�ʤ�ޤ���
-
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-�ʤ����ȤǤ���ľ���ѹ�������硤���֥������Ȥ����Ƥ���������
-�Ȥ�ʤ��ʤäơ��פ�̥Х��θ����ˤʤ�ޤ���
-
-1.4 C�Υǡ�����VALUE���Ѵ�����
-
-VALUE�μºݤι�¤��
-
-  * FIXNUM��
-
-    1bit�����եȤ��ơ�LSB��Ω�Ƥ롥
-
-  * ����¾�Υݥ��󥿤ξ��
-
-    ���Τޤ�VALUE�˥��㥹�Ȥ��롥
-
-�ȤʤäƤ��ޤ�����äơ�LSB������å������VALUE��FIXNUM����
-�����狼��櫓�Ǥ�(�ݥ��󥿤�LSB��Ω�äƤ��ʤ����Ȥ��ꤷ��
-����)��
-
-�Ǥ����顤FIXNUM�ʳ���Ruby�Υ��֥������Ȥι�¤�Τ�ñ��VALUE
-�˥��㥹�Ȥ��������VALUE���Ѵ�����ޤ�����������Ǥ�դι�¤
-�Τ�VALUE�˥��㥹�Ƚ����櫓�ǤϤ���ޤ��󡥥��㥹�Ȥ����
-��Ruby���ΤäƤ��빽¤��(ruby.h���������Ƥ���struct RXxxx
-�Τ��)�����Ǥ���
-
-FIXNUM�˴ؤ��Ƥ��Ѵ��ޥ������ͳ����ɬ�פ�����ޤ���C������
-����VALUE���Ѵ�����ޥ����ϰʲ��Τ�Τ�����ޤ���ɬ�פ˱���
-�ƻȤ�ʬ���Ƥ���������
-
-  INT2FIX()	��Ȥ�������31bit�ޤ���63bit����˼��ޤ뼫��
-		�������
-  INT2NUM()	Ǥ�դ���������VALUE��
-
-INT2NUM()��������FIXNUM���ϰϤ˼��ޤ�ʤ���硤Bignum���Ѵ�
-���Ƥ���ޤ�(���������٤�)��
-
-1.5 Ruby�Υǡ���������
-
-������Ҥ٤��̤ꡤRuby�ι�¤�Τ򥢥���������������Ƥι�����
-�Ԥ����Ȥϴ�����ޤ��󡥤ǡ�Ruby�Υǡ�����������ˤ�
-Ruby���Ѱդ��Ƥ���ؿ����Ѥ��Ƥ���������
-
-�����ǤϤ�äȤ�Ȥ���Ǥ�����ʸ��������������/�����
-���ؿ��򤢤��ޤ�(�����ǤϤʤ��Ǥ�)��
-
- ʸ������Ф���ؿ�
-
-  rb_str_new(const char *ptr, long len)
-
-    ������Ruby��ʸ������������롥
-
-  rb_str_new2(const char *ptr)
-  rb_str_new_cstr(const char *ptr)
-
-    C��ʸ���󤫤�Ruby��ʸ������������롥���δؿ��ε�ǽ��
-    rb_str_new(ptr, strlen(ptr))��Ʊ���Ǥ��롥
-
-  rb_tainted_str_new(const char *ptr, long len)
-  rb_tainted_str_new_cstr(const char *ptr)
-
-    �����ޡ������ղä��줿������Ruby��ʸ������������롥����
-    ����Υǡ����˴�Ť�ʸ����ˤϱ����ޡ������ղä����٤�
-    �Ǥ��롥
-
-  rb_tainted_str_new2(const char *ptr)
-
-    C��ʸ���󤫤�����ޡ������ղä��줿Ruby��ʸ������������롥
-
-  rb_sprintf(const char *format, ...)
-  rb_vsprintf(const char *format, va_list ap)
-
-    C��ʸ����format��³��������printf(3)�Υե����ޥåȤˤ������ä�
-    ��������Ruby��ʸ������������롥
-
-  rb_str_cat(VALUE str, const char *ptr, long len)
-
-    Ruby��ʸ����str��len�Х��Ȥ�ʸ����ptr���ɲä��롥
-
-  rb_str_cat2(VALUE str, const char* ptr)
-
-    Ruby��ʸ����str��C��ʸ����ptr���ɲä��롥���δؿ��ε�ǽ��
-    rb_str_cat(str, ptr, strlen(ptr))��Ʊ���Ǥ��롥
-
-  rb_str_catf(VALUE str, const char* format, ...)
-  rb_str_vcatf(VALUE str, const char* format, va_list ap)
-
-    C��ʸ����format��³��������printf(3)�Υե����ޥåȤˤ������ä�
-    ��������Ruby��ʸ����str���ɲä��롥���δؿ��ε�ǽ�ϡ����줾��
-    rb_str_cat2(str, rb_sprintf(format, ...)) ��
-    rb_str_cat2(str, rb_vsprintf(format, ap)) ��Ʊ���Ǥ��롥
-
-  rb_enc_str_new(const char *ptr, long len, rb_encoding *enc)
-  
-    ���ꤵ�줿���󥳡��ǥ��󥰤�Ruby��ʸ�������������.
-     
-  rb_usascii_str_new(const char *ptr, long len)
-  rb_usascii_str_new_cstr(const char *ptr)
-
-    ���󥳡��ǥ��󥰤�US-ASCII��Ruby��ʸ�������������.
-
-
- ������Ф���ؿ�
-
-  rb_ary_new()
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-    ���ƤƤ�����
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-
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-
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-
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- �������Ǥ�.
-
-  rb_ary_aref(argc, VALUE *argv, VALUE ary)
-
-    Array#[]��Ʊ��.
-
-  rb_ary_entry(VALUE ary, long offset)
-
-    ary[offset]
-
-  rb_ary_subseq(VALUE ary, long beg, long len)
-
-    ary[beg, len]
-
-  rb_ary_push(VALUE ary, VALUE val)
-  rb_ary_pop(VALUE ary)
-  rb_ary_shift(VALUE ary)
-  rb_ary_unshift(VALUE ary, VALUE val)
-
-2��Ruby�ε�ǽ��Ȥ�
-
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-
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-
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-  VALUE rb_define_class(const char *name, VALUE super)
-  VALUE rb_define_module(const char *name)
-
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-  VALUE rb_define_class_under(VALUE outer, const char *name, VALUE super)
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-
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-
-  void rb_define_method(VALUE klass, const char *name, 
-		        VALUE (*func)(), int argc)
-
-  void rb_define_singleton_method(VALUE object, const char *name, 
-			          VALUE (*func)(), int argc)
-
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-
-  void rb_define_method_id(VALUE klass, ID name, 
-                           VALUE (*func)(ANYARGS), int argc)
-
-private/protected�ʥ᥽�åɤ��������դ��Ĥδؿ�������ޤ�.
-
-  void rb_define_private_method(VALUE klass, const char *name, 
-				VALUE (*func)(), int argc)
-  void rb_define_protected_method(VALUE klass, const char *name, 
-			          VALUE (*func)(), int argc)
-
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---
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---
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-{
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-{
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---
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-Ruby�ȶ�ͭ�Ϥ��ʤ���Ruby�Υ��֥������Ȥ��Ǽ�����ǽ���Τ���
-C������ѿ��ϰʲ��δؿ���Ȥä�Ruby���󥿥ץ꥿���ѿ���¸��
-�򶵤��Ƥ����Ƥ����������Ǥʤ���GC�ǥȥ�֥�򵯤����ޤ���
-
-  void rb_global_variable(VALUE *var)
-
-(4) extconf.rb���Ѱդ���
-
-Makefile������ο����ˤʤ�extconf.rb�Ȥ����ե��������
-�ޤ���extconf.rb�ϥ饤�֥��Υ���ѥ����ɬ�פʾ��Υ�����
-���ʤɤ�Ԥ����Ȥ���Ū�Ǥ����ޤ���
-
-  require 'mkmf'
-
-��extconf.rb����Ƭ���֤��ޤ���extconf.rb����Ǥϰʲ���Ruby��
-����Ȥ����Ȥ�����ޤ���
-
-  have_library(lib, func): �饤�֥���¸�ߥ����å�
-  have_func(func, header): �ؿ���¸�ߥ����å�
-  have_header(header): �إå��ե������¸�ߥ����å�
-  create_makefile(target): Makefile������
-
-�ʲ����ѿ���Ȥ����Ȥ��Ǥ��ޤ���
-
-  $CFLAGS: ����ѥ�������ɲ�Ū�˻��ꤹ��ե饰(-O�ʤ�)
-  $CPPFLAGS: �ץ�ץ����å����ɲ�Ū�˻��ꤹ��ե饰(-I��-D�ʤ�)
-  $LDFLAGS: ��󥯻����ɲ�Ū�˻��ꤹ��ե饰(-L�ʤ�)
-  $objs: ��󥯤���륪�֥������ȥե�����̾�Υꥹ��
-
-���֥������ȥե�����Υꥹ�Ȥϡ��̾�ϥ������ե�����򸡺���
-�Ƽ�ưŪ����������ޤ�����make������ǥ���������������褦��
-��������Ū�˻��ꤹ��ɬ�פ�����ޤ���
-
-�饤�֥��򥳥�ѥ��뤹���郎·�鷺�����Υ饤�֥��򥳥�
-�ѥ��뤷�ʤ����ˤ�create_makefile��ƤФʤ����Makefile����
-�����줺������ѥ����Ԥ��ޤ���
-
-(5) depend���Ѱդ���
-
-�⤷���ǥ��쥯�ȥ��depend�Ȥ����ե����뤬¸�ߤ���С�
-Makefile����¸�ط�������å����Ƥ���ޤ���
-
-  % gcc -MM *.c > depend
-
-�ʤɤǺ�뤳�Ȥ�����ޤ������ä�»��̵���Ǥ��礦��
-
-(6) Makefile����������
-
-Makefile��ºݤ��������뤿��ˤ�
-
-  ruby extconf.rb
-
-�Ȥ��ޤ���extconf.rb�� require 'mkmf' �ιԤ��ʤ����ˤϥ��顼
-�ˤʤ�ޤ��Τǡ��������ɲä���
-
-  ruby -r mkmf extconf.rb
-
-�Ȥ��Ƥ���������
-
-site_ruby �ǥ��쥯�ȥ�Ǥʤ���
-vendor_ruby �ǥ��쥯�ȥ�˥��󥹥ȡ��뤹����ˤ�
-�ʲ��Τ褦�� --vendor ���ץ�����ä��Ƥ���������
-
-  ruby extconf.rb --vendor
-
-�ǥ��쥯�ȥ��ext�ʲ����Ѱդ������ˤ�Ruby���Τ�make�λ���
-��ưŪ��Makefile����������ޤ��Τǡ����Υ��ƥåפ����פǤ���
-
-(7) make����
-
-ưŪ��󥯥饤�֥�������������ˤϤ��ξ��make���Ƥ�����
-����ɬ�פǤ���� make install �ǥ��󥹥ȡ��뤵��ޤ���
-
-ext�ʲ��˥ǥ��쥯�ȥ���Ѱդ������ϡ�Ruby�Υǥ��쥯�ȥ��
-make��¹Ԥ����Makefile����������make��ɬ�פˤ�äƤϤ��Υ�
-���塼���Ruby�ؤΥ�󥯤ޤǼ�ưŪ�˼¹Ԥ��Ƥ���ޤ���
-extconf.rb��񤭴�����ʤɤ���Makefile�κ�������ɬ�פʻ��Ϥ�
-��Ruby�ǥ��쥯�ȥ��make���Ƥ���������
-
-��ĥ�饤�֥���make install��Ruby�饤�֥��Υǥ��쥯�ȥ��
-���˥��ԡ�����ޤ����⤷��ĥ�饤�֥��ȶ�Ĵ���ƻȤ�Ruby�ǵ�
-�Ҥ��줿�ץ�����ब���ꡤRuby�饤�֥����֤��������ˤϡ�
-��ĥ�饤�֥���ѤΥǥ��쥯�ȥ�β��� lib �Ȥ����ǥ��쥯�ȥ�
-���ꡤ������ ��ĥ�� .rb �Υե�������֤��Ƥ�����Ʊ���˥���
-���ȡ��뤵��ޤ���
-
-(8) �ǥХå�
-
-�ޤ����ǥХå����ʤ���ư���ʤ��Ǥ��礦�͡�ext/Setup�˥ǥ���
-���ȥ�̾��񤯤���Ū�˥�󥯤���ΤǥǥХå����Ȥ���褦�ˤ�
-��ޤ�������ʬ����ѥ��뤬�٤��ʤ�ޤ����ɡ�
-
-(9) �Ǥ�������
-
-��Ϥ��ä���Ȥ��ʤꡤ������������ʤꡤ���ʤꡤ����ͳ�ˤ�
-�Ȥ�����������Ruby�κ�Ԥϳ�ĥ�饤�֥��˴ؤ��ư��ڤθ�����
-��ĥ���ޤ���
-
-Appendix A. Ruby�Υ����������ɤ�ʬ��
-
-Ruby�Υ������Ϥ����Ĥ���ʬ�ह�뤳�Ȥ�����ޤ������Τ�������
-���饤�֥�����ʬ�ϴ���Ū�˳�ĥ�饤�֥���Ʊ��������ˤʤ�
-�Ƥ��ޤ��������Υ������Ϻ��ޤǤ������ǤۤȤ������Ǥ����
-�פ��ޤ���
-
-Ruby�������
-
-  class.c         : ���饹�ȥ⥸�塼��
-  error.c         : �㳰���饹���㳰����
-  gc.c            : ��������
-  load.c          : �饤�֥��Υ�����
-  object.c        : ���֥�������
-  variable.c      : �ѿ������
-
-Ruby�ι�ʸ���ϴ�
-  parse.y         : ������ϴ�ȹ�ʸ���
-    -> parse.c    : ��ư����
-  keywords        : ͽ���
-    -> lex.c      : ��ư����
-
-Ruby��ɾ����(�̾�YARV)
-  blockinlining.c
-  compile.c
-  eval.c
-  eval_error.c
-  eval_jump.c
-  eval_safe.c
-  insns.def           : ���۵���������
-  iseq.c              : VM::ISeq���
-  thread.c            : ����åɴ����ȥ���ƥ������ڤ��ؤ�
-  thread_win32.c      : ����åɼ���
-  thread_pthread.c    : Ʊ��
-  vm.c
-  vm_dump.c
-  vm_eval.c
-  vm_exec.c
-  vm_insnhelper.c
-  vm_method.c
-
-  opt_insns_unif.def  : ̿��ͻ��
-  opt_operand.def     : ��Ŭ���Τ�������
-
-    -> insn*.inc      : ��ư����
-    -> opt*.inc       : ��ư����
-    -> vm.inc         : ��ư����
-
-����ɽ�����󥸥� (����)
-  regex.c
-  regcomp.c
-  regenc.c
-  regerror.c
-  regexec.c
-  regparse.c
-  regsyntax.c
-
-�桼�ƥ���ƥ��ؿ�
-
-  debug.c       : C�ǥХå��ѤΥǥХå�����ܥ�
-  dln.c         : ưŪ�����ǥ���
-  st.c          : ���ѥϥå���ɽ
-  strftime.c    : ��������
-  util.c        : ����¾�Υ桼�ƥ���ƥ�
-
-Ruby���ޥ�ɤμ���
-
-  dmyext.c
-  dmydln.c
-  dmyencoding.c
-  id.c
-  inits.c
-  main.c
-  ruby.c
-  version.c
-
-  gem_prelude.rb
-  prelude.rb
-
-���饹�饤�֥��
-
-  array.c       : Array
-  bignum.c      : Bignum
-  compar.c      : Comparable
-  complex.c     : Complex
-  cont.c        : Fiber, Continuation
-  dir.c         : Dir
-  enum.c        : Enumerable
-  enumerator.c  : Enumerator
-  file.c        : File
-  hash.c        : Hash
-  io.c          : IO
-  marshal.c     : Marshal
-  math.c        : Math
-  numeric.c     : Numeric, Integer, Fixnum, Float
-  pack.c        : Array#pack, String#unpack
-  proc.c        : Binding, Proc
-  process.c     : Process
-  random.c      : ���
-  range.c       : Range
-  rational.c    : Rational
-  re.c          : Regexp, MatchData
-  signal.c      : Signal
-  sprintf.c     : 
-  string.c      : String
-  struct.c      : Struct
-  time.c        : Time
-
-  defs/knwon_errors.def  : �㳰���饹 Errno::*
-    -> known_errors.inc  : ��ư����
-
-¿���첽
-  encoding.c    : Encoding
-  transcode.c   : Encoding::Converter
-  enc/*.c       : ���󥳡��ǥ��󥰥��饹��
-  enc/trans/*   : �����ɥݥ�����б�ɽ
-
-goruby���ޥ�ɤμ���
-  
-  goruby.c
-  golf_prelude.rb      : goruby��ͭ�Υ饤�֥��
-    -> golf_prelude.c  : ��ư����
-
-
-Appendix B. ��ĥ�Ѵؿ���ե����
-
-C���줫��Ruby�ε�ǽ�����Ѥ���API�ϰʲ����̤�Ǥ��롥
-
-** ��
-
-VALUE
-
-  Ruby���֥������Ȥ�ɽ�����뷿��ɬ�פ˱����ƥ��㥹�Ȥ����Ѥ��롥
-  �Ȥ߹��߷���ɽ������C�η���ruby.h�˵��Ҥ��Ƥ���R�ǻϤޤ빽¤
-  �ΤǤ��롥VALUE���򤳤��˥��㥹�Ȥ��뤿���R�ǻϤޤ빽¤��
-  ̾��������ʸ���ˤ���̾���Υޥ������Ѱդ���Ƥ��롥
-
-** �ѿ������
-
-Qnil
-
-  ���: nil���֥�������
-
-Qtrue
-
-  ���: true���֥�������(���Υǥե������)
-
-Qfalse
-
-  ���: false���֥�������
-
-** C�ǡ����Υ��ץ��벽
-
-Data_Wrap_Struct(VALUE klass, void (*mark)(), void (*free)(), void *sval)
-
-  C��Ǥ�դΥݥ��󥿤򥫥ץ��벽����Ruby���֥������Ȥ��֤�����
-  �Υݥ��󥿤�Ruby���饢����������ʤ��ʤä�����free�ǻ��ꤷ��
-  �ؿ����ƤФ�롥�ޤ������Υݥ��󥿤λؤ��ǡ�����¾��Ruby����
-  �������Ȥ�ؤ��Ƥ����硤mark�˻��ꤹ��ؿ��ǥޡ�������ɬ��
-  �����롥
-
-Data_Make_Struct(klass, type, mark, free, sval)
-
-  type���Υ����malloc�����ѿ�sval�����������塤����򥫥ץ�
-  �벽�����ǡ������֤��ޥ�����
-
-Data_Get_Struct(data, type, sval)
-
-  data����type���Υݥ��󥿤���Ф��ѿ�sval����������ޥ�����
-
-** �������å�
-
-TYPE(value)
-FIXNUM_P(value)
-NIL_P(value)
-void Check_Type(VALUE value, int type)
-void Check_SafeStr(VALUE value)
-
-** ���Ѵ�
-
-FIX2INT(value)
-FIX2LONG(value)
-INT2FIX(i)
-NUM2INT(value)
-NUM2LONG(value)
-INT2NUM(i)
-NUM2DBL(value)
-rb_float_new(f)
-StringValue(value)
-StringValuePtr(value)
-StringValueCStr(value)
-rb_str_new2(s)
-
-** ���饹/�⥸�塼�����
-
-VALUE rb_define_class(const char *name, VALUE super)
-
-  super�Υ��֥��饹�Ȥ��ƿ�����Ruby���饹��������롥
-
-VALUE rb_define_class_under(VALUE module, const char *name, VALUE super)
-
-  super�Υ��֥��饹�Ȥ��ƿ�����Ruby���饹���������module��
-  ����Ȥ���������롥
-
-VALUE rb_define_module(const char *name)
-
-  ������Ruby�⥸�塼���������롥
-
-VALUE rb_define_module_under(VALUE module, const char *name)
-
-  ������Ruby�⥸�塼����������module������Ȥ���������롥
-
-void rb_include_module(VALUE klass, VALUE module)
-
-  �⥸�塼��򥤥󥯥롼�ɤ��롥class�����Ǥ�module�򥤥�
-  �롼�ɤ��Ƥ�����ˤϲ��⤷�ʤ�(¿�ť��󥯥롼�ɤζػ�)��
-
-void rb_extend_object(VALUE object, VALUE module)
-
-  ���֥������Ȥ�⥸�塼��(���������Ƥ���᥽�å�)�dz�ĥ���롥
-
-** ����ѿ����
-
-void rb_define_variable(const char *name, VALUE *var)
-
-  Ruby��C�ȤǶ�ͭ���륰�����Х��ѿ���������롥�ѿ�̾��`$'��
-  �Ϥޤ�ʤ����ˤϼ�ưŪ���ɲä���롥name�Ȥ���Ruby�μ��̻�
-  �Ȥ��Ƶ�����ʤ�ʸ��(�㤨��` ')��ޤ���ˤ�Ruby�ץ�����
-  �फ��ϸ����ʤ��ʤ롥
-
-void rb_define_readonly_variable(const char *name, VALUE *var)
-
-  Ruby��C�ȤǶ�ͭ����read only�Υ������Х��ѿ���������롥
-  read only�Ǥ��뤳�Ȱʳ���rb_define_variable()��Ʊ����
-
-void rb_define_virtual_variable(const char *name,
-				VALUE (*getter)(), void (*setter)())
-
-  �ؿ��ˤ�äƼ¸������Ruby�ѿ���������롥�ѿ������Ȥ��줿
-  ���ˤ�getter�����ѿ����ͤ����åȤ��줿���ˤ�setter���ƤФ�
-  �롥
-
-void rb_define_hooked_variable(const char *name, VALUE *var,
-			       VALUE (*getter)(), void (*setter)())
-
-  �ؿ��ˤ�ä�hook�ΤĤ���줿�������Х��ѿ���������롥�ѿ�
-  �����Ȥ��줿���ˤ�getter�����ؿ����ͤ����åȤ��줿���ˤ�
-  setter���ƤФ�롥getter��setter��0����ꤷ�����ˤ�hook��
-  ���ꤷ�ʤ��Τ�Ʊ�����ˤʤ롥
-
-void rb_global_variable(VALUE *var)
-
-  GC�Τ��ᡤRuby�ץ�����फ��ϥ�����������ʤ���, Ruby����
-  �������Ȥ�ޤ�����ѿ���ޡ������롥
-
-** ���
-
-void rb_define_const(VALUE klass, const char *name, VALUE val)
-
-  �����������롥
-
-void rb_define_global_const(const char *name, VALUE val)
-
-  ��������������롥
-
-     rb_define_const(rb_cObject, name, val)
-
-  ��Ʊ����̣��
-
-** �᥽�å����
-
-rb_define_method(VALUE klass, const char *name, VALUE (*func)(), int argc)
-
-  �᥽�åɤ�������롥argc��self����������ο���argc��-1�λ�, 
-  �ؿ��ˤϰ����ο�(self��ޤޤʤ�)����1����, �������������2
-  �����Ȥ��������Ϳ������(��3������self)��argc��-2�λ�, 
-  ��1������self, ��2������args(args�ϰ�����ޤ�Ruby������)��
-  ����������Ϳ�����롥
- 
-rb_define_private_method(VALUE klass, const char *name, VALUE (*func)(), int argc)
-
-  private�᥽�åɤ�������롥������rb_define_method()��Ʊ����
-
-rb_define_singleton_method(VALUE klass, const char *name, VALUE (*func)(), int argc)
-
-  �ðۥ᥽�åɤ�������롥������rb_define_method()��Ʊ����
-
-rb_scan_args(int argc, VALUE *argv, const char *fmt, ...)
-
-  argc, argv������Ϳ����줿������ʬ�򤹤롥fmt��ɬ�ܰ����ο�, 
-  �ղð����ο�, �Ĥ�ΰ��������뤫����ꤹ��ʸ�����, "����
-  ����*"�Ȥ��������Ǥ��롥 2 ���ܤο�����"*"�Ϥ��줾���ά��
-  ǽ�Ǥ��롥ɬ�ܰ�������Ĥ�ʤ�����0����ꤹ�롥��3������
-  �ߤ��ѿ��ؤΥݥ��󥿤�, �����������Ǥ������ѿ��˳�Ǽ����롥
-  �ղð������б����������Ϳ�����Ƥ��ʤ������ѿ���Qnil��
-  ��������롥
-
-** Ruby�᥽�åɸƤӽФ�
-
-VALUE rb_funcall(VALUE recv, ID mid, int narg, ...)
-
-  �᥽�åɸƤӽФ���ʸ���󤫤�mid�����뤿��ˤ�rb_intern()��
-  �Ȥ���
-
-VALUE rb_funcall2(VALUE recv, ID mid, int argc, VALUE *argv)
-
-  �᥽�åɸƤӽФ���������argc, argv�������Ϥ���
-
-VALUE rb_eval_string(const char *str)
-
-  ʸ�����Ruby������ץȤȤ��ƥ���ѥ��롦�¹Ԥ��롥
-
-ID rb_intern(const char *name)
-
-  ʸ������б�����ID���֤���
-
-char *rb_id2name(ID id)
-
-  ID���б�����ʸ������֤�(�ǥХå���)��
-
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-
-  ���饹��̾�����֤�(�ǥХå���)�����饹��̾��������ʤ�����
-  ��, ������̤ä�̾������ĥ��饹��̾�����֤���
-
-int rb_respond_to(VALUE obj, ID id)
-
-  obj��id�Ǽ������᥽�åɤ���Ĥ��ɤ������֤���
-
-** ���󥹥����ѿ�
-
-VALUE rb_iv_get(VALUE obj, const char *name)
-
-  obj�Υ��󥹥����ѿ����ͤ����롥`@'�ǻϤޤ�ʤ����󥹥���
-  ���ѿ��� Ruby�ץ�����फ�饢�������Ǥ��ʤ��ֱ��줿�ץ���
-  �������ѿ��ˤʤ롥�������ʸ����̾������ĥ��饹(�ޤ���
-  �⥸�塼��)�Υ��󥹥����ѿ��Ȥ��Ƽ�������Ƥ��롥
-
-VALUE rb_iv_set(VALUE obj, const char *name, VALUE val)
-
-  obj�Υ��󥹥����ѿ���val�˥��åȤ��롥
-
-** ���湽¤
-
-VALUE rb_iterate(VALUE (*func1)(), VALUE arg1, VALUE (*func2)(), VALUE arg2)
-
-  func2��֥��å��Ȥ������ꤷ, func1�򥤥ƥ졼���Ȥ��ƸƤ֡� 
-  func1�ˤ� arg1�������Ȥ����Ϥ���, func2�ˤ���1�����˥��ƥ졼
-  ������Ϳ����줿��, ��2������arg2���Ϥ���롥
- 
-VALUE rb_yield(VALUE val)
-
-  val���ͤȤ��ƥ��ƥ졼���֥��å���ƤӽФ���
-
-VALUE rb_rescue(VALUE (*func1)(), VALUE arg1, VALUE (*func2)(), VALUE arg2)
-
-  �ؿ�func1��arg1������˸ƤӽФ���func1�μ¹�����㳰��ȯ��
-  �������ˤ� func2��arg2������Ȥ��ƸƤ֡�����ͤ��㳰��ȯ��
-  ���ʤ��ä�����func1�������, �㳰��ȯ���������ˤ�func2����
-  ���ͤǤ��롥
-
-VALUE rb_ensure(VALUE (*func1)(), VALUE arg1, void (*func2)(), VALUE arg2)
-
-  �ؿ�func1��arg1������Ȥ��Ƽ¹Ԥ�, �¹Խ�λ��(���Ȥ��㳰��
-  ȯ�����Ƥ�) func2��arg2������Ȥ��Ƽ¹Ԥ��롥����ͤ�func1
-  ������ͤǤ���(�㳰��ȯ�������������ʤ�)��
-
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-
-void rb_warning(const char *fmt, ...)
-
-  rb_verbose����ɸ�२�顼���Ϥ˷ٹ�����ɽ�����롥������
-  printf()��Ʊ����
-
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-
-  RuntimeError�㳰��ȯ�������롥������printf()��Ʊ����
-
-void rb_raise(VALUE exception, const char *fmt, ...)
-
-  exception�ǻ��ꤷ���㳰��ȯ�������롥fmt�ʲ��ΰ�����
-  printf()��Ʊ����
-
-void rb_fatal(const char *fmt, ...)
-
-  ��̿Ū�㳰��ȯ�������롥�̾���㳰�����ϹԤʤ�줺, ���󥿡�
-  �ץ꥿����λ����(������ensure�ǻ��ꤵ�줿�����ɤϽ�λ����
-  �¹Ԥ����)��
-
-void rb_bug(const char *fmt, ...)
-
-  ���󥿡��ץ꥿�ʤɥץ������ΥХ��Ǥ���ȯ������Ϥ��Τʤ�
-  �����λ��Ƥ֡����󥿡��ץ꥿�ϥ�������פ�ľ���˽�λ���롥
-  �㳰�����ϰ��ڹԤʤ��ʤ���
-
-** Ruby�ν�������¹�
-
-Ruby�򥢥ץꥱ����������������ˤϰʲ��Υ��󥿥ե�����
-��Ȥ����̾�γ�ĥ�饤�֥��ˤ�ɬ�פʤ���
-
-void ruby_init()
-
-  Ruby���󥿥ץ꥿�ν������Ԥʤ���
-
-void ruby_options(int argc, char **argv)
-
-  Ruby���󥿥ץ꥿�Υ��ޥ�ɥ饤������ν�����Ԥʤ���
-
-void ruby_run()
-
-  Ruby���󥿥ץ꥿��¹Ԥ��롥
-
-void ruby_script(char *name)
-
-  Ruby�Υ�����ץ�̾($0)�����ꤹ�롥
-
-** ���󥿥ץ꥿�Υ��٥�ȤΥեå�
-
- void rb_add_event_hook(rb_event_hook_func_t func, rb_event_t events)
-
-���ꤵ�줿���󥿥ץ꥿�Υ��٥�Ȥ��Ф���եå��ؿ����ɲä��ޤ���
-events�ϰʲ����ͤ�or�Ǥʤ���Фʤ�ޤ���:
-
-	RUBY_EVENT_LINE
-	RUBY_EVENT_CLASS
-	RUBY_EVENT_END
-	RUBY_EVENT_CALL
-	RUBY_EVENT_RETURN
-	RUBY_EVENT_C_CALL
-	RUBY_EVENT_C_RETURN
-	RUBY_EVENT_RAISE
-	RUBY_EVENT_ALL
-
-rb_event_hook_func_t������ϰʲ����̤�Ǥ�:
-
- typedef void (*rb_event_hook_func_t)(rb_event_t event, NODE *node,
- 				      VALUE self, ID id, VALUE klass)
-
- int rb_remove_event_hook(rb_event_hook_func_t func)
-
-���ꤵ�줿�եå��ؿ��������ޤ���
-
-
-Appendix C. extconf.rb�ǻȤ���ؿ�����
-
-extconf.rb����Ǥ����Ѳ�ǽ�ʥ���ѥ���������å��δؿ��ϰ�
-�����̤�Ǥ��롥
-
-have_macro(macro, headers)
-
-  �إå��ե�����header�򥤥󥯥롼�ɤ��ƥޥ���macro�������
-  ��Ƥ��뤫�ɤ��������å����롥�ޥ������������Ƥ����true
-  ���֤���
-
-have_library(lib, func)
-
-  �ؿ�func��������Ƥ���饤�֥��lib��¸�ߤ�����å����롥
-  �饤�֥�꤬¸�ߤ������true���֤���
-
-find_library(lib, func, path...)
-
-  �ؿ�func��������Ƥ���饤�֥��lib��¸�ߤ� -Lpath ���ɲ�
-  ���ʤ�������å����롥�饤�֥�꤬���դ��ä�����true���֤���
-
-have_func(func, header)
-
-  �إå��ե�����header�򥤥󥯥롼�ɤ��ƴؿ�func��¸�ߤ����
-  �å����롥func��ɸ��Ǥϥ�󥯤���ʤ��饤�֥����Τ�Τ�
-  ������ˤ����have_library�Ǥ��Υ饤�֥�������å����Ƥ�
-  �������ؿ���¸�ߤ����true���֤���
-
-have_var(var, header)
-
-  �إå��ե�����header�򥤥󥯥롼�ɤ����ѿ�var��¸�ߤ������
-  �����롥var��ɸ��Ǥϥ�󥯤���ʤ��饤�֥����Τ�ΤǤ�
-  ����ˤ����have_library�Ǥ��Υ饤�֥�������å����Ƥ���
-  �����ѿ���¸�ߤ����true���֤���
-
-have_header(header)
-
-  �إå��ե������¸�ߤ�����å����롥�إå��ե����뤬¸�ߤ�
-  ���true���֤���
-
-find_header(header, path...)
-
-  �إå��ե�����header��¸�ߤ� -Ipath ���ɲä��ʤ�������å�
-  ���롥�إå��ե����뤬���դ��ä�����true���֤���
-
-have_struct_member(type, member, header)
-
-  �إå��ե�����header�򥤥󥯥롼�ɤ��Ʒ�type�˥���member
-  ��¸�ߤ��뤫������å����롥type���������Ƥ��ơ�member��
-  ���Ĥ����true���֤���
-
-have_type(type, header, opt)
-
-  �إå��ե�����header�򥤥󥯥롼�ɤ��Ʒ�type��¸�ߤ��뤫��
-  �����å����롥type���������Ƥ����true���֤���
-
-check_sizeof(type, header)
-
-  �إå��ե�����header�򥤥󥯥롼�ɤ��Ʒ�type��charñ�̥���
-  ����Ĵ�٤롥type���������Ƥ�������Υ��������֤��������
-  ��Ƥ��ʤ��Ȥ���nil���֤���
-
-create_makefile(target)
-
-  ��ĥ�饤�֥���Ѥ�Makefile���������롥���δؿ���ƤФʤ���
-  �Ф��Υ饤�֥��ϥ���ѥ��뤵��ʤ���target�ϥ⥸�塼��̾
-  ��ɽ����
-
-find_executable(command, path)
-
-  ���ޥ��command��File::PATH_SEPARATOR�Ƕ��ڤ�줿�ѥ�̾��
-  �ꥹ��path����õ����path��nil�ޤ��Ͼ�ά���줿���ϡ��Ķ�
-  �ѿ�PATH���ͤ���Ѥ��롥�¹Բ�ǽ�ʥ��ޥ�ɤ����Ĥ��ä����
-  �ϥѥ���ޤ�ե�����̾�����Ĥ���ʤ��ä�����nil���֤���
-
-with_config(withval[, default=nil])
-
-  ���ޥ�ɥ饤����--with-<withval>�ǻ��ꤵ�줿���ץ������
-  �����롥
-
-enable_config(config, *defaults)
-disable_config(config, *defaults)
-
-  ���ޥ�ɥ饤����--enable-<config>�ޤ���
-  --disable-<config>�ǻ��ꤵ�줿�����ͤ����롥
-  --enable-<config>�����ꤵ��Ƥ�������true��
-  --disable-<config>�����ꤵ��Ƥ�������false���֤���
-  �ɤ������ꤵ��Ƥ��ʤ����ϡ��֥��å��Ĥ��ǸƤӽФ����
-  �������*defaults��yield������̡��֥��å��ʤ��ʤ�
-  *defaults���֤���
-
-dir_config(target[, default_dir])
-dir_config(target[, default_include, default_lib])
-
-  ���ޥ�ɥ饤����--with-<target>-dir, --with-<target>-include,
-  --with-<target>-lib�Τ����줫�ǻ��ꤵ���ǥ��쥯�ȥ��
-  $CFLAGS �� $LDFLAGS ���ɲä��롥--with-<target>-dir=/path��
-  --with-<target>-include=/path/include --with-<target>-lib=/path/lib
-  �������Ǥ��롥�ɲä��줿 include �ǥ��쥯�ȥ�� lib �ǥ���
-  ���ȥ��������֤��� ([include_dir, lib_dir])
-
-pkg_config(pkg)
-
-  pkg-config���ޥ�ɤ���ѥå�����pkg�ξ�������롥 
-  pkg-config�μºݤΥ��ޥ��̾�ϡ�--with-pkg-config���ޥ��
-  �饤�󥪥ץ����ǻ����ǽ��
-
-/*
- * Local variables:
- * fill-column: 60
- * end:
- */
+doc/extension.ja.rdocに移動しました
diff --git a/README.ja b/README.ja
deleted file mode 100644
index aeb170734d..0000000000
--- a/README.ja
+++ /dev/null
@@ -1,160 +0,0 @@
-* Ruby�Ȥ�
-
-Ruby�ϥ���ץ뤫�Ķ��Ϥʥ��֥������Ȼظ�������ץȸ���Ǥ���
-Ruby�Ϻǽ餫����ʥ��֥������Ȼظ�����Ȥ����߷פ���Ƥ���
-�����顤���֥������Ȼظ��ץ�����ߥ󥰤��ڤ˹Ԥ����������
-������������̾�μ�³�����Υץ�����ߥ󥰤��ǽ�Ǥ���
-
-Ruby�ϥƥ����Ƚ����ط���ǽ�Ϥʤɤ�ͥ�졤Perl��Ʊ�����餤����
-�Ǥ�������˥���ץ��ʸˡ�ȡ��㳰�����䥤�ƥ졼���ʤɤε���
-�ˤ�äơ����ʬ����䤹���ץ�����ߥ󥰤�����ޤ���
-
-
-* Ruby����Ĺ
-
-  + ����ץ��ʸˡ
-  + ���̤Υ��֥������Ȼظ���ǽ(���饹���᥽�åɥ�����ʤ�)
-  + �ü�ʥ��֥������Ȼظ���ǽ(Mixin, �ðۥ᥽�åɤʤ�)
-  + �黻�ҥ����С�������
-  + �㳰������ǽ
-  + ���ƥ졼���ȥ���������
-  + �����١������쥯��
-  + �����ʥߥå������ǥ��� (�������ƥ�����ˤ��)
-  + �ܿ������⤤��¿����Unix-like/POSIX�ߴ��ץ�åȥե�������
-    ư�������Ǥʤ���Windows�� Mac OS X��BeOS�ʤɤξ�Ǥ�ư��
-    cf. http://redmine.ruby-lang.org/wiki/ruby-19/SupportedPlatformsJa
-
-* ����ˡ
-
-** FTP��
-
-�ʲ��ξ��ˤ����Ƥ���ޤ���
-
-  ftp://ftp.ruby-lang.org/pub/ruby/
-
-** Subversion��
-
-��ȯ��ü�Υ����������ɤϼ��Υ��ޥ�ɤǼ����Ǥ��ޤ���
-
-  $ svn co http://svn.ruby-lang.org/repos/ruby/trunk/ ruby
-
-¾�˳�ȯ��Υ֥����ΰ����ϼ��Υ��ޥ�ɤǸ����ޤ���
-
-  $ svn ls http://svn.ruby-lang.org/repos/ruby/branches/
-
-
-* �ۡ���ڡ���
-
-Ruby�Υۡ���ڡ�����URL��
-
-   http://www.ruby-lang.org/
-
-�Ǥ���
-
-
-* �᡼��󥰥ꥹ��
-
-Ruby�Υ᡼��󥰥ꥹ�Ȥ�����ޤ������ô�˾������
-
-   ruby-list-ctl@ruby-lang.org
-
-�ޤ���ʸ��
-
-   subscribe YourFirstName YourFamilyName
-   
-�Ƚ񤤤����äƲ������� 
-
-Ruby��ȯ�Ը����᡼��󥰥ꥹ�Ȥ⤢��ޤ���������Ǥ�ruby�Υ�
-��������λ��ͳ�ĥ�ʤɼ����������ˤĤ��Ƶ�������Ƥ��ޤ���
-���ô�˾������
-
-   ruby-dev-ctl@ruby-lang.org
-
-�ޤ�ruby-list��Ʊ�ͤ���ˡ�ǥ᡼�뤷�Ƥ��������� 
-
-Ruby��ĥ�⥸�塼��ˤĤ����ä��礦ruby-ext�᡼��󥰥ꥹ�Ȥ�
-���شط�������ˤĤ����ä��礦ruby-math�᡼��󥰥ꥹ�Ȥ�
-�Ѹ���ä��礦ruby-talk�᡼��󥰥ꥹ�Ȥ⤢��ޤ���������ˡ
-�Ϥɤ��Ʊ���Ǥ��� 
-
-
-* ����ѥ��롦���󥹥ȡ���
-
-�ʲ��μ��ǹԤäƤ���������
-
-  1. �⤷configure�ե����뤬���Ĥ���ʤ����⤷����
-     configure.in���Ť��褦�ʤ顢autoconf��¹Ԥ���
-     ������configure����������
-
-  2. configure��¹Ԥ���Makefile�ʤɤ���������
-
-     �Ķ��ˤ�äƤϥǥե���Ȥ�C����ѥ����ѥ��ץ�����դ�
-     �ޤ���configure���ץ����� optflags=.. warnflags=.. ��
-     �Ǿ�񤭤Ǥ��ޤ���
-
-  3. (ɬ�פʤ��)defines.h���Խ�����
-
-     ¿ʬ��ɬ��̵���Ȼפ��ޤ���
-
-  4. (ɬ�פʤ��)ext/Setup����Ū�˥�󥯤����ĥ�⥸�塼���
-     ���ꤹ��
-
-     ext/Setup�˵��Ҥ����⥸�塼�����Ū�˥�󥯤���ޤ���
-
-     �����ʥߥå������ǥ��󥰤򥵥ݡ��Ȥ��Ƥ��ʤ��������ƥ�
-     ����Ǥ�Setup��1���ܤΡ�option nodynamic�פȤ����ԤΥ�
-     ���Ȥ򳰤�ɬ�פ�����ޤ����ޤ������Υ������ƥ������
-     ��ĥ�⥸�塼������Ѥ��뤿��ˤϡ����餫������Ū�˥��
-     �����Ƥ���ɬ�פ�����ޤ���
-
-  5. make��¹Ԥ��ƥ���ѥ��뤹��
-
-  6. make test�ǥƥ��Ȥ�Ԥ���
-
-     ��test succeeded�פ�ɽ�������������Ǥ����������ƥ���
-     ���������Ƥⴰ�������ݾڤ���Ƥ������ǤϤ���ޤ���
-
-  7. make install
-
-     root�Ǻ�Ȥ���ɬ�פ����뤫�⤷��ޤ���
-
-�⤷������ѥ�����˥��顼��ȯ���������ˤϥ��顼�Υ����ȥ�
-����OS�μ����ޤ�Ǥ�������ܤ�����ݡ��Ȥ��Ԥ����äƤ�
-�������¾�����Τ���ˤ�ʤ�ޤ���
-
-
-* �ܿ�
-
-UNIX�Ǥ����configure���ۤȤ�ɤκ��ۤ�ۼ����Ƥ����Ϥ���
-�������פ�̸���Ȥ������ä����(����˰㤤�ʤ�)����Ԥˤ���
-���Ȥ��ݡ��Ȥ���С����Ǥ��뤫���Τ�ޤ���
-
-�������ƥ�����ˤ�äȤ��¸����Τ�GC���Ǥ���Ruby��GC���о�
-�Υ������ƥ����㤬setjmp()�ˤ�ä����ƤΥ쥸������ jmp_buf��
-��Ǽ���뤳�Ȥȡ�jmp_buf�ȥ����å���32bit���饤����Ȥ����
-���뤳�Ȥ��ꤷ�Ƥ��ޤ����ä����Ԥ���Ω���ʤ������б�����
-��˺���Ǥ��礦����Ԥβ������Ū��ñ�ǡ�gc.c�ǥ����å���
-�ޡ������Ƥ�����ʬ�˥��饤����ȤΥХ��ȿ��������餷�ƥޡ�
-�����륳���ɤ��ɲä�������ǺѤߤޤ�����defined(THINK_C)�פ�
-����Ƥ�����ʬ�򻲹ͤˤ��Ƥ�������
-
-# �ºݤˤ�Ruby��Think C�Ǥϥ���ѥ���Ǥ��ޤ���
-
-�쥸����������ɥ������CPU�Ǥϡ��쥸����������ɥ��򥹥���
-���˥ե�å��夹�륢����֥饳���ɤ��ɲä���ɬ�פ����뤫����
-��ޤ���
-
-
-* ���۾��
-
-COPYING.ja�ե�����򻲾Ȥ��Ƥ���������
-
-
-* ����
-
-�����ȡ��Х���ݡ��Ȥ���¾�� matz@netlab.jp �ޤǡ�
--------------------------------------------------------
-created at: Thu Aug  3 11:57:36 JST 1995
-Local variables:
-mode: indented-text
-end:
diff --git a/README.ja.md b/README.ja.md
new file mode 100644
index 0000000000..6663b94680
--- /dev/null
+++ b/README.ja.md
@@ -0,0 +1,180 @@
+[![Build Status](https://travis-ci.org/ruby/ruby.svg?branch=master)](https://travis-ci.org/ruby/ruby)
+[![Build status](https://ci.appveyor.com/api/projects/status/0sy8rrxut4o0k960/branch/master?svg=true)](https://ci.appveyor.com/project/ruby/ruby/branch/master)
+[![Actions Status](https://github.com/ruby/ruby/workflows/macOS/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"macOS")
+[![Actions Status](https://github.com/ruby/ruby/workflows/MinGW/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MinGW")
+[![Actions Status](https://github.com/ruby/ruby/workflows/MJIT/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MJIT")
+[![Actions Status](https://github.com/ruby/ruby/workflows/Ubuntu/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Ubuntu")
+[![Actions Status](https://github.com/ruby/ruby/workflows/Windows/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Windows")
+
+# Rubyとは
+
+Rubyはシンプルかつ強力なオブジェクト指向スクリプト言語です． Rubyは純粋なオブジェクト指向言語として設計されているので，
+オブジェクト指向プログラミングを手軽に行う事が出来ます．もちろん普通の手続き型のプログラミングも可能です．
+
+Rubyはテキスト処理関係の能力などに優れ，Perlと同じくらい強力です．さらにシンプルな文法と，
+例外処理やイテレータなどの機構によって，より分かりやすいプログラミングが出来ます．
+
+## Rubyの特長
+
+*   シンプルな文法
+*   普通のオブジェクト指向機能(クラス，メソッドコールなど)
+*   特殊なオブジェクト指向機能(Mixin，特異メソッドなど)
+*   演算子オーバーロード
+*   例外処理機能
+*   イテレータとクロージャ
+*   ガーベージコレクタ
+*   ダイナミックローディング (アーキテクチャによる)
+*   移植性が高い．多くのUnix-like/POSIX互換プラットフォーム上で動くだけでなく，Windows， macOS，
+    Haikuなどの上でも動く cf.
+    https://github.com/ruby/ruby/blob/master/doc/contributing.rdoc#platform-maintainers
+
+
+## 入手法
+
+サードパーティーツールを使った方法を含むRubyのインストール方法の一覧は
+
+https://www.ruby-lang.org/ja/downloads/
+
+を参照してください．
+
+### Git
+
+ミラーをGitHubに公開しています． 以下のコマンドでリポジトリを取得できます．
+
+    $ git clone https://github.com/ruby/ruby.git
+
+他のブランチの一覧は次のコマンドで見られます．
+
+    $ git ls-remote https://github.com/ruby/ruby.git
+
+Rubyリポジトリの本来のmasterは https://git.ruby-lang.org/ruby.git にあります．
+コミッタはこちらを使います．
+
+### Subversion
+
+古いRubyのバージョンのソースコードは次のコマンドでも取得できます．
+
+    $ svn co https://svn.ruby-lang.org/repos/ruby/branches/ruby_2_6/ ruby
+
+他のブランチの一覧は次のコマンドで見られます．
+
+    $ svn ls https://svn.ruby-lang.org/repos/ruby/branches/
+
+
+## ホームページ
+
+RubyのホームページのURLは
+
+https://www.ruby-lang.org/
+
+です．
+
+## メーリングリスト
+
+Rubyのメーリングリストがあります．参加希望の方は [ruby-list-request@ruby-lang.org] まで本文に
+
+    subscribe
+
+と書いて送って下さい．
+
+Ruby開発者向けメーリングリストもあります．こちらではrubyのバグ，将来の仕様拡張など実装上の問題について議論されています．
+参加希望の方は [ruby-dev-request@ruby-lang.org] までruby-listと同様の方法でメールしてください．
+
+Ruby拡張モジュールについて話し合うruby-extメーリングリストと数学関係の話題について話し合うruby-mathメーリングリストと
+英語でrubyについて話し合うruby-talkメーリングリストもあります．参加方法はどれも同じです．
+
+[ruby-list-request@ruby-lang.org]: mailto:ruby-list-request@ruby-lang.org?subject=Join%20Ruby%20Mailing%20List&body=subscribe
+[ruby-dev-request@ruby-lang.org]: mailto:ruby-dev-request@ruby-lang.org?subject=Join%20Ruby%20Mailing%20List&body=subscribe
+
+## コンパイル・インストール
+
+以下の手順で行ってください．
+
+1.  (Gitリポジトリから取得したソースをビルドする場合) `./autogen.sh` を実行して新しく `configure` を生成する
+
+2.  `configure` を実行して `Makefile` などを生成する
+
+    環境によってはデフォルトのCコンパイラ用オプションが付きます． `configure` オプションで `optflags=..`
+    `warnflags=..` 等で上書きできます．
+
+3.  (必要ならば)`include/ruby/defines.h` を編集する
+
+    多分，必要無いと思います．
+
+4.  (必要ならば)`ext/Setup` に静的にリンクする拡張モジュールを指定する
+
+    `ext/Setup` に記述したモジュールは静的にリンクされます．
+
+    ダイナミックローディングをサポートしていないアーキテクチャでは `Setup` の1行目の「`option nodynamic`」という行のコ
+    メントを外す必要があります．
+    また，このアーキテクチャで拡張モジュールを利用するためには，あらかじめ静的にリンクをしておく必要があります．
+
+5.  `make` を実行してコンパイルする
+
+6.  `make check`でテストを行う．
+
+    「`check succeeded`」と表示されれば成功です．ただしテストに成功しても完璧だと保証されている訳ではありません．
+
+7.  `make install`
+
+    以下のディレクトリを作って，そこにファイルをインストー ルします．
+
+    *   `${DESTDIR}${prefix}/bin`
+    *   `${DESTDIR}${prefix}/include/ruby-${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/include/ruby-${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib`
+    *   `${DESTDIR}${prefix}/lib/ruby`
+    *   `${DESTDIR}${prefix}/lib/ruby/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/lib/ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib/ruby/site_ruby`
+    *   `${DESTDIR}${prefix}/lib/ruby/site_ruby/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/lib/ruby/site_ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib/ruby/vendor_ruby`
+    *   `${DESTDIR}${prefix}/lib/ruby/vendor_ruby/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/lib/ruby/vendor_ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib/ruby/gems/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/share/man/man1`
+    *   `${DESTDIR}${prefix}/share/ri/${MAJOR}.${MINOR}.${TEENY}/system`
+
+
+    RubyのAPIバージョンが'*x.y.z*'であれば，`${MAJOR}`は
+    '*x*'で，`${MINOR}`は'*y*'，`${TEENY}`は'*z*'です．
+
+    **注意**: APIバージョンの `teeny` は，Rubyプログラムのバージョンとは異なることがあります．
+
+    `root` で作業する必要があるかもしれません．
+
+
+もし，コンパイル時にエラーが発生した場合にはエラーのログとマシン，OSの種類を含むできるだけ詳しいレポートを作者に送って下さると他の方のためにもなります．
+
+## 移植
+
+UNIXであれば `configure` がほとんどの差異を吸収してくれるはずですが，思わぬ見落としがあった場合(ある事が多い)，作者にその
+ことを報告すれば，解決できる可能性があります．
+
+アーキテクチャにもっとも依存するのはGC部です．RubyのGCは対象
+のアーキテクチャが`setjmp()`または`getcontext()`によって全てのレジスタを `jmp_buf` や `ucontext_t`
+に格納することと， `jmp_buf` や `ucontext_t` とスタックが32bitアラインメントされていることを仮定
+しています．特に前者が成立しない場合の対応は非常に困難でしょう． 後者の解決は比較的簡単で， `gc.c` でスタックをマークしている
+部分にアラインメントのバイト数だけずらしてマークするコードを追加するだけで済みます．`defined(__mc68000__)`で括られてい
+る部分を参考にしてください．
+
+レジスタウィンドウを持つCPUでは，レジスタウィンドウをスタックにフラッシュするアセンブラコードを追加する必要があるかもしれません．
+
+## 配布条件
+
+[COPYING.ja](COPYING.ja) ファイルを参照してください．
+
+## フィードバック
+
+Rubyに関する質問は Ruby-Talk（英語）や Ruby-List（日本語） (https://www.ruby-lang.org/ja/community/mailing-lists) や，
+stackoverflow (https://ja.stackoverflow.com/) などのWebサイトに投稿してください．
+
+バグ報告は https://bugs.ruby-lang.org で受け付けています．
+
+
+## 著者
+
+Rubyのオリジナル版は，1995年にまつもとゆきひろ氏によって設計・開発されました．
+
+<mailto:matz@ruby-lang.org>
diff --git a/README.md b/README.md
new file mode 100644
index 0000000000..bd7c7813a7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,173 @@
+[![Build Status](https://travis-ci.org/ruby/ruby.svg?branch=master)](https://travis-ci.org/ruby/ruby)
+[![Build status](https://ci.appveyor.com/api/projects/status/0sy8rrxut4o0k960/branch/master?svg=true)](https://ci.appveyor.com/project/ruby/ruby/branch/master)
+[![Actions Status](https://github.com/ruby/ruby/workflows/macOS/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"macOS")
+[![Actions Status](https://github.com/ruby/ruby/workflows/MinGW/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MinGW")
+[![Actions Status](https://github.com/ruby/ruby/workflows/MJIT/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MJIT")
+[![Actions Status](https://github.com/ruby/ruby/workflows/Ubuntu/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Ubuntu")
+[![Actions Status](https://github.com/ruby/ruby/workflows/Windows/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Windows")
+
+# What's Ruby
+
+Ruby is an interpreted object-oriented programming language often
+used for web development. It also offers many scripting features
+to process plain text and serialized files, or manage system tasks.
+It is simple, straightforward, and extensible.
+
+## Features of Ruby
+
+*   Simple Syntax
+*   **Normal** Object-oriented Features (e.g. class, method calls)
+*   **Advanced** Object-oriented Features (e.g. mix-in, singleton-method)
+*   Operator Overloading
+*   Exception Handling
+*   Iterators and Closures
+*   Garbage Collection
+*   Dynamic Loading of Object Files (on some architectures)
+*   Highly Portable (works on many Unix-like/POSIX compatible platforms as
+    well as Windows, macOS, etc.) cf.
+    https://github.com/ruby/ruby/blob/master/doc/contributing.rdoc#label-Platform+Maintainers
+
+
+## How to get Ruby
+
+For a complete list of ways to install Ruby, including using third-party tools
+like rvm, see:
+
+https://www.ruby-lang.org/en/downloads/
+
+### Git
+
+The mirror of the Ruby source tree can be checked out with the following command:
+
+    $ git clone https://github.com/ruby/ruby.git
+
+There are some other branches under development. Try the following command
+to see the list of branches:
+
+    $ git ls-remote https://github.com/ruby/ruby.git
+
+You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source)
+if you are a committer.
+
+### Subversion
+
+Stable branches for older Ruby versions can be checked out with also the
+following command:
+
+    $ svn co https://svn.ruby-lang.org/repos/ruby/branches/ruby_2_6/ ruby
+
+Try the following command to see the list of branches:
+
+    $ svn ls https://svn.ruby-lang.org/repos/ruby/branches/
+
+
+## Ruby home page
+
+https://www.ruby-lang.org/
+
+## Mailing list
+
+There is a mailing list to discuss Ruby. To subscribe to this list, please
+send the following phrase:
+
+    subscribe
+
+in the mail body (not subject) to the address [ruby-talk-request@ruby-lang.org].
+
+[ruby-talk-request@ruby-lang.org]: mailto:ruby-talk-request@ruby-lang.org?subject=Join%20Ruby%20Mailing%20List&body=subscribe
+
+## How to compile and install
+
+1.  If you want to use Microsoft Visual C++ to compile Ruby, read
+    [win32/README.win32](win32/README.win32) instead of this document.
+
+2.  Run `./autogen.sh` to generate configure, when you build the source checked
+    out from the Git repository.
+
+3.  Run `./configure`, which will generate `config.h` and `Makefile`.
+
+    Some C compiler flags may be added by default depending on your
+    environment. Specify `optflags=..` and `warnflags=..` as necessary to
+    override them.
+
+4.  Edit `include/ruby/defines.h` if you need. Usually this step will not be needed.
+
+5.  Remove comment mark(`#`) before the module names from `ext/Setup` (or add
+    module names if not present), if you want to link modules statically.
+
+    If you don't want to compile non static extension modules (probably on
+    architectures which do not allow dynamic loading), remove comment mark
+    from the line "`#option nodynamic`" in `ext/Setup`.
+
+    Usually this step will not be needed.
+
+6.  Run `make`.
+
+    * On Mac, set RUBY\_CODESIGN environment variable with a signing identity.
+      It uses the identity to sign `ruby` binary. See also codesign(1).
+
+7.  Optionally, run '`make check`' to check whether the compiled Ruby
+    interpreter works well. If you see the message "`check succeeded`", your
+    Ruby works as it should (hopefully).
+
+8.  Run '`make install`'.
+
+    This command will create the following directories and install files into
+    them.
+
+    *   `${DESTDIR}${prefix}/bin`
+    *   `${DESTDIR}${prefix}/include/ruby-${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/include/ruby-${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib`
+    *   `${DESTDIR}${prefix}/lib/ruby`
+    *   `${DESTDIR}${prefix}/lib/ruby/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/lib/ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib/ruby/site_ruby`
+    *   `${DESTDIR}${prefix}/lib/ruby/site_ruby/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/lib/ruby/site_ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib/ruby/vendor_ruby`
+    *   `${DESTDIR}${prefix}/lib/ruby/vendor_ruby/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/lib/ruby/vendor_ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}`
+    *   `${DESTDIR}${prefix}/lib/ruby/gems/${MAJOR}.${MINOR}.${TEENY}`
+    *   `${DESTDIR}${prefix}/share/man/man1`
+    *   `${DESTDIR}${prefix}/share/ri/${MAJOR}.${MINOR}.${TEENY}/system`
+
+
+    If Ruby's API version is '*x.y.z*', the `${MAJOR}` is '*x*', the
+    `${MINOR}` is '*y*', and the `${TEENY}` is '*z*'.
+
+    **NOTE**: teeny of the API version may be different from one of Ruby's
+    program version
+
+    You may have to be a super user to install Ruby.
+
+If you fail to compile Ruby, please send the detailed error report with the
+error log and machine/OS type, to help others.
+
+Some extension libraries may not get compiled because of lack of necessary
+external libraries and/or headers, then you will need to run '`make distclean-ext`'
+to remove old configuration after installing them in such case.
+
+## Copying
+
+See the file [COPYING](COPYING).
+
+## Feedback
+
+Questions about the Ruby language can be asked on the Ruby-Talk mailing list
+(https://www.ruby-lang.org/en/community/mailing-lists) or on websites like
+(https://stackoverflow.com).
+
+Bugs should be reported at https://bugs.ruby-lang.org. Read [HowToReport] for more information.
+
+[HowToReport]: https://bugs.ruby-lang.org/projects/ruby/wiki/HowToReport
+
+## Contributing
+
+See the file [CONTRIBUTING.md](CONTRIBUTING.md)
+
+## The Author
+
+Ruby was originally designed and developed by Yukihiro Matsumoto (Matz) in 1995.
+
+<matz@ruby-lang.org>
diff --git a/ToDo b/ToDo
deleted file mode 100644
index 7e5ef523a8..0000000000
--- a/ToDo
+++ /dev/null
@@ -1,124 +0,0 @@
-Language Spec.
-
-- Class#allocate - basicNew
-- class Foo::Bar<Baz .. end, module Boo::Bar .. end
-- raise exception by `` error
-- a +1 to be a+1, not a(+1).
-- clarify evaluation order of operator argument (=~, .., ...)
-- :symbol => value hash in the form of {symbol: value, ...} ??
-* operator !! for rescue. ???
-* objectify characters
-* ../... outside condition invokes operator method too.
-* ... inside condition turns off just before right condition.???
-* package or access control for global variables??
-* named arguments like foo(nation:="german") or foo(nation: "german").
-* method to retrieve argument information (needs new C API)
-* multiple return values, yield values.  maybe incompatible ???
-* cascading method invocation ???
-* def Class#method .. end ??
-* def Foo::Bar::baz() .. end ??
-* I18N (or M17N) script/string/regexp
-* discourage use of symbol variables (e.g. $/, etc.) in manual
-* discourage use of Perlish features by giving warnings.
-* non confusing in-block local variable (is it possible?)
-  + remove scope by block
-  + variables appears within block may have independent values.
-* Regexp: make /o thread safe.
-* decide whether begin with rescue or ensure make do..while loop.
-* unify == and eql? again
-* to_i returns nil if str contains no digit.
-* jar like combined library package. -> RubyGems?
-* method combination, e.g. before, after, around, etc.
-* .. or something like defadvice in Emacs.
-* property - for methods, or for objects in general.
-* "in" modifier, to annotate, or to encourage assertion.
-* selector namespace - something like generic-flet in CLOS, to help RubyBehavior
-* private instance variable (as in Python?) @_foo in class Foo => @_Foo_foo
-* warn/error "bare word" method, like "foo",  you should type "foo()"
-
-Hacking Interpreter
-
-- generational GC
-* non-blocking open (e.g. for named pipe) for thread
-* avoid blocking with gethostbyname/gethostbyaddr (use fork ???)
-* objectify interpreters ???
-* remove rb_eval() recursions
-* syntax tree -> bytecode ???
-* scrambled script, or script filter
-* setuid ruby
-* performance tune for in-block (dynamic) local variables.
-* give warnings to assign magic variables.
-* export rb_io_{addstr,printf,puts,print}
-* autoload should work with threads [ruby-talk:4589]
-* remove stdio dependency from IOs.
-* warn for inconsistent local variable usage (lv m and method m at the same time). 
-* MicroRuby
-* Built-in Interactive Ruby.
-* Parser API
-* trap every method invocation, which can be enabled by e.g. trap_call :method.
-* unify Errno exceptions of same errno, or new exception comparison scheme.
-* 2.times{|i| if i==0 then a = 15 else puts eval("a") end} should print nil.
-* Thread#max_stack_size attribute (possible??)
-
-Standard Libraries
-
-- Module#define_method which takes a name and a body (block, proc or method).
-- Enume#inject
-- Array#fetch
-- IO::for_fd
-- Process::waitall [ruby-talk:4557]
-- Process::Status
-- File::lchown, File::lchmod; xxx - still need work for non existing platforms
-- move Time::times to Process.
-- Enumerable#sort_by for Schwartzian transformation
-- fork_and_kill_other_threads.
-- signal list (Signal::trap, Signal::list).
-- move NameError under StandardError.
-- Integer#to_s(base)
-- Hash::new{default}
-- hash etc. should handle self referenceing array/hash
-- Array#select(n1,n2...) works like Array#indexes(n1,n2...)
-- use Mersenne Twister RNG for random.
-- deprecate Array#indexes, and Array#indices.
-- remove dependency on MAXPATHLEN.
-- String#scanf(?)
-* Object#fmt(?)
-* Time::strptime
-* Integer[num], Float[num];  Fixnum[num]?
-* method to retrieve non-number trailer for to_i/to_f.
-* Stream or Port, abstract superclass of IO ?
-* String#{pred,prev}, String#downto
-* optional stepsize argument for succ()
-* Ruby module -- Ruby::Version, Ruby::Interpreter
-* introduce Boolean class; super of TrueClass, FalseClass
-* synchronized method - synchronized{...}, synchronized :foo, :bar
-* Array#&, Array#| to allow duplication. ???
-* way to specify immortal (fork endurance) thread;
-* or raise ForkException to every thread but fork caller.
-* new user-defined marshal scheme. _dump(dumper), _load(restorer)
-* library to load per-user profile seeking .ruby_profile or ruby.ini file.
-* warning framework (warn, warning for Ruby level)
-* marshal should not depend on sprintf (works bad with locale).
-* ternary arg pow: a.pow(b,c) == a**b%c
-* new caller(), e.g. call_stack; needs better name.
-* pointer share mechanism similar to one in String for Array.
-* require "1.6" etc. by /usr/lib/ruby/1.6/1.6.rb ;-)
-* save both "feature names" and "normalized path" in $"
-* implement Mutex_m (or MutexMixin) using Mutex.
-
-Extension Libraries
-
-* ptk.rb pTk wrapper that is compatible to tk.rb
-* Berkeley DB extension
-* BitVector
-* thread-safe fcgi
-
-Ruby Libraries
-
-- urllib.rb, nttplib.rb, etc.
-* format like perl's
-
-Tools
-
-* freeze or undump to bundle everything
-* bundle using zlib
diff --git a/install-sh b/aclocal.m4
index e69de29bb2..e69de29bb2 100644
--- a/install-sh
+++ b/aclocal.m4
diff --git a/addr2line.c b/addr2line.c
new file mode 100644
index 0000000000..0029cffbca
--- /dev/null
+++ b/addr2line.c
@@ -0,0 +1,2723 @@
+/**********************************************************************
+
+  addr2line.c -
+
+  $Author$
+
+  Copyright (C) 2010 Shinichiro Hamaji
+
+**********************************************************************/
+
+#if defined(__clang__)
+#pragma clang diagnostic ignored "-Wgnu-empty-initializer"
+#pragma clang diagnostic ignored "-Wgcc-compat"
+#endif
+
+#include "ruby/internal/config.h"
+#include "ruby/defines.h"
+#include "ruby/missing.h"
+#include "addr2line.h"
+
+#include <stdio.h>
+#include <errno.h>
+
+#ifdef HAVE_LIBPROC_H
+#include <libproc.h>
+#endif
+
+#include "ruby/internal/stdbool.h"
+
+#if defined(USE_ELF) || defined(HAVE_MACH_O_LOADER_H)
+
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/* Make alloca work the best possible way.  */
+#ifdef __GNUC__
+# ifndef alloca
+#  define alloca __builtin_alloca
+# endif
+#else
+# ifdef HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+#pragma alloca
+#  else
+#   ifndef alloca		/* predefined by HP cc +Olibcalls */
+void *alloca();
+#   endif
+#  endif /* AIX */
+# endif	/* HAVE_ALLOCA_H */
+#endif /* __GNUC__ */
+
+#ifdef HAVE_DLADDR
+# include <dlfcn.h>
+#endif
+
+#ifdef HAVE_MACH_O_LOADER_H
+# include <crt_externs.h>
+# include <mach-o/fat.h>
+# include <mach-o/loader.h>
+# include <mach-o/nlist.h>
+# include <mach-o/stab.h>
+#endif
+
+#ifdef USE_ELF
+# ifdef __OpenBSD__
+#  include <elf_abi.h>
+# else
+#  include <elf.h>
+# endif
+
+#ifndef ElfW
+# if SIZEOF_VOIDP == 8
+#  define ElfW(x) Elf64##_##x
+# else
+#  define ElfW(x) Elf32##_##x
+# endif
+#endif
+#ifndef ELF_ST_TYPE
+# if SIZEOF_VOIDP == 8
+#  define ELF_ST_TYPE ELF64_ST_TYPE
+# else
+#  define ELF_ST_TYPE ELF32_ST_TYPE
+# endif
+#endif
+#endif
+
+#ifdef SHF_COMPRESSED
+# if defined(ELFCOMPRESS_ZLIB) && defined(HAVE_LIBZ)
+   /* FreeBSD 11.0 lacks ELFCOMPRESS_ZLIB */
+#  include <zlib.h>
+#  define SUPPORT_COMPRESSED_DEBUG_LINE
+# endif
+#else /* compatibility with glibc < 2.22 */
+# define SHF_COMPRESSED 0
+#endif
+
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
+#define DW_LNS_copy                     0x01
+#define DW_LNS_advance_pc               0x02
+#define DW_LNS_advance_line             0x03
+#define DW_LNS_set_file                 0x04
+#define DW_LNS_set_column               0x05
+#define DW_LNS_negate_stmt              0x06
+#define DW_LNS_set_basic_block          0x07
+#define DW_LNS_const_add_pc             0x08
+#define DW_LNS_fixed_advance_pc         0x09
+#define DW_LNS_set_prologue_end         0x0a /* DWARF3 */
+#define DW_LNS_set_epilogue_begin       0x0b /* DWARF3 */
+#define DW_LNS_set_isa                  0x0c /* DWARF3 */
+
+/* Line number extended opcode name. */
+#define DW_LNE_end_sequence             0x01
+#define DW_LNE_set_address              0x02
+#define DW_LNE_define_file              0x03
+#define DW_LNE_set_discriminator        0x04  /* DWARF4 */
+
+PRINTF_ARGS(static int kprintf(const char *fmt, ...), 1, 2);
+
+typedef struct line_info {
+    const char *dirname;
+    const char *filename;
+    const char *path; /* object path */
+    int line;
+
+    uintptr_t base_addr;
+    uintptr_t saddr;
+    const char *sname; /* function name */
+
+    struct line_info *next;
+} line_info_t;
+
+struct dwarf_section {
+    char *ptr;
+    size_t size;
+    uint64_t flags;
+};
+
+typedef struct obj_info {
+    const char *path; /* object path */
+    char *mapped;
+    size_t mapped_size;
+    void *uncompressed;
+    uintptr_t base_addr;
+    uintptr_t vmaddr;
+    struct dwarf_section debug_abbrev;
+    struct dwarf_section debug_info;
+    struct dwarf_section debug_line;
+    struct dwarf_section debug_ranges;
+    struct dwarf_section debug_str;
+    struct obj_info *next;
+} obj_info_t;
+
+#define DWARF_SECTION_COUNT 5
+
+static struct dwarf_section *
+obj_dwarf_section_at(obj_info_t *obj, int n)
+{
+    struct dwarf_section *ary[] = {
+        &obj->debug_abbrev,
+        &obj->debug_info,
+        &obj->debug_line,
+        &obj->debug_ranges,
+        &obj->debug_str
+    };
+    if (n < 0 || DWARF_SECTION_COUNT <= n) {
+        abort();
+    }
+    return ary[n];
+}
+
+struct debug_section_definition {
+    const char *name;
+    struct dwarf_section *dwarf;
+};
+
+/* Avoid consuming stack as this module may be used from signal handler */
+static char binary_filename[PATH_MAX + 1];
+
+static unsigned long
+uleb128(char **p)
+{
+    unsigned long r = 0;
+    int s = 0;
+    for (;;) {
+	unsigned char b = *(unsigned char *)(*p)++;
+	if (b < 0x80) {
+	    r += (unsigned long)b << s;
+	    break;
+	}
+	r += (b & 0x7f) << s;
+	s += 7;
+    }
+    return r;
+}
+
+static long
+sleb128(char **p)
+{
+    long r = 0;
+    int s = 0;
+    for (;;) {
+	unsigned char b = *(unsigned char *)(*p)++;
+	if (b < 0x80) {
+	    if (b & 0x40) {
+		r -= (0x80 - b) << s;
+	    }
+	    else {
+		r += (b & 0x3f) << s;
+	    }
+	    break;
+	}
+	r += (b & 0x7f) << s;
+	s += 7;
+    }
+    return r;
+}
+
+static const char *
+get_nth_dirname(unsigned long dir, char *p)
+{
+    if (!dir--) {
+	return "";
+    }
+    while (dir--) {
+	while (*p) p++;
+	p++;
+	if (!*p) {
+	    kprintf("Unexpected directory number %lu in %s\n",
+		    dir, binary_filename);
+	    return "";
+	}
+    }
+    return p;
+}
+
+static void
+fill_filename(int file, char *include_directories, char *filenames, line_info_t *line, obj_info_t *obj)
+{
+    int i;
+    char *p = filenames;
+    char *filename;
+    unsigned long dir;
+    for (i = 1; i <= file; i++) {
+	filename = p;
+	if (!*p) {
+	    /* Need to output binary file name? */
+	    kprintf("Unexpected file number %d in %s at %tx\n",
+		    file, binary_filename, filenames - obj->mapped);
+	    return;
+	}
+	while (*p) p++;
+	p++;
+	dir = uleb128(&p);
+	/* last modified. */
+	uleb128(&p);
+	/* size of the file. */
+	uleb128(&p);
+
+	if (i == file) {
+	    line->filename = filename;
+	    line->dirname = get_nth_dirname(dir, include_directories);
+	}
+    }
+}
+
+static void
+fill_line(int num_traces, void **traces, uintptr_t addr, int file, int line,
+	  char *include_directories, char *filenames,
+	  obj_info_t *obj, line_info_t *lines, int offset)
+{
+    int i;
+    addr += obj->base_addr - obj->vmaddr;
+    for (i = offset; i < num_traces; i++) {
+	uintptr_t a = (uintptr_t)traces[i];
+	/* We assume one line code doesn't result >100 bytes of native code.
+       We may want more reliable way eventually... */
+	if (addr < a && a < addr + 100) {
+	    fill_filename(file, include_directories, filenames, &lines[i], obj);
+	    lines[i].line = line;
+	}
+    }
+}
+
+struct LineNumberProgramHeader {
+    uint64_t unit_length;
+    uint16_t version;
+    uint8_t format; /* 4 or 8 */
+    uint64_t header_length;
+    uint8_t minimum_instruction_length;
+    uint8_t maximum_operations_per_instruction;
+    uint8_t default_is_stmt;
+    int8_t line_base;
+    uint8_t line_range;
+    uint8_t opcode_base;
+    /* uint8_t standard_opcode_lengths[opcode_base-1]; */
+    const char *include_directories;
+    const char *filenames;
+    const char *cu_start;
+    const char *cu_end;
+};
+
+static int
+parse_debug_line_header(const char **pp, struct LineNumberProgramHeader *header)
+{
+    const char *p = *pp;
+    header->unit_length = *(uint32_t *)p;
+    p += sizeof(uint32_t);
+
+    header->format = 4;
+    if (header->unit_length == 0xffffffff) {
+	header->unit_length = *(uint64_t *)p;
+	p += sizeof(uint64_t);
+        header->format = 8;
+    }
+
+    header->cu_end = p + header->unit_length;
+
+    header->version = *(uint16_t *)p;
+    p += sizeof(uint16_t);
+    if (header->version > 4) return -1;
+
+    header->header_length = header->format == 4 ? *(uint32_t *)p : *(uint64_t *)p;
+    p += header->format;
+    header->cu_start = p + header->header_length;
+
+    header->minimum_instruction_length = *(uint8_t *)p++;
+
+    if (header->version >= 4) {
+        /* maximum_operations_per_instruction = *(uint8_t *)p; */
+        if (*p != 1) return -1; /* For non-VLIW architectures, this field is 1 */
+        p++;
+    }
+
+    header->default_is_stmt = *(uint8_t *)p++;
+    header->line_base = *(int8_t *)p++;
+    header->line_range = *(uint8_t *)p++;
+    header->opcode_base = *(uint8_t *)p++;
+    /* header->standard_opcode_lengths = (uint8_t *)p - 1; */
+    p += header->opcode_base - 1;
+
+    header->include_directories = p;
+
+    /* temporary measure for compress-debug-sections */
+    if (p >= header->cu_end) return -1;
+
+    /* skip include directories */
+    while (*p) {
+	p = memchr(p, '\0', header->cu_end - p);
+	if (!p) return -1;
+	p++;
+    }
+    p++;
+
+    header->filenames = p;
+
+    *pp = header->cu_start;
+
+    return 0;
+}
+
+static int
+parse_debug_line_cu(int num_traces, void **traces, char **debug_line,
+		obj_info_t *obj, line_info_t *lines, int offset)
+{
+    const char *p = (const char *)*debug_line;
+    struct LineNumberProgramHeader header;
+
+    /* The registers. */
+    unsigned long addr = 0;
+    unsigned int file = 1;
+    unsigned int line = 1;
+    /* unsigned int column = 0; */
+    int is_stmt;
+    /* int basic_block = 0; */
+    /* int end_sequence = 0; */
+    /* int prologue_end = 0; */
+    /* int epilogue_begin = 0; */
+    /* unsigned int isa = 0; */
+
+    if (parse_debug_line_header(&p, &header))
+        return -1;
+    is_stmt = header.default_is_stmt;
+
+#define FILL_LINE()						    \
+    do {							    \
+	fill_line(num_traces, traces, addr, file, line,		    \
+                  (char *)header.include_directories,               \
+                  (char *)header.filenames,                         \
+		  obj, lines, offset);				    \
+	/*basic_block = prologue_end = epilogue_begin = 0;*/	    \
+    } while (0)
+
+    while (p < header.cu_end) {
+	unsigned long a;
+	unsigned char op = *p++;
+	switch (op) {
+	case DW_LNS_copy:
+	    FILL_LINE();
+	    break;
+	case DW_LNS_advance_pc:
+	    a = uleb128((char **)&p);
+	    addr += a;
+	    break;
+	case DW_LNS_advance_line: {
+	    long a = sleb128((char **)&p);
+	    line += a;
+	    break;
+	}
+	case DW_LNS_set_file:
+	    file = (unsigned int)uleb128((char **)&p);
+	    break;
+	case DW_LNS_set_column:
+	    /*column = (unsigned int)*/(void)uleb128((char **)&p);
+	    break;
+	case DW_LNS_negate_stmt:
+	    is_stmt = !is_stmt;
+	    break;
+	case DW_LNS_set_basic_block:
+	    /*basic_block = 1; */
+	    break;
+	case DW_LNS_const_add_pc:
+	    a = ((255UL - header.opcode_base) / header.line_range) *
+		header.minimum_instruction_length;
+	    addr += a;
+	    break;
+	case DW_LNS_fixed_advance_pc:
+	    a = *(uint16_t *)p;
+	    p += sizeof(uint16_t);
+	    addr += a;
+	    break;
+	case DW_LNS_set_prologue_end:
+	    /* prologue_end = 1; */
+	    break;
+	case DW_LNS_set_epilogue_begin:
+	    /* epilogue_begin = 1; */
+	    break;
+	case DW_LNS_set_isa:
+	    /* isa = (unsigned int)*/(void)uleb128((char **)&p);
+	    break;
+	case 0:
+	    a = *(unsigned char *)p++;
+	    op = *p++;
+	    switch (op) {
+	    case DW_LNE_end_sequence:
+		/* end_sequence = 1; */
+		FILL_LINE();
+		addr = 0;
+		file = 1;
+		line = 1;
+		/* column = 0; */
+		is_stmt = header.default_is_stmt;
+		/* end_sequence = 0; */
+		/* isa = 0; */
+		break;
+	    case DW_LNE_set_address:
+		addr = *(unsigned long *)p;
+		p += sizeof(unsigned long);
+		break;
+	    case DW_LNE_define_file:
+		kprintf("Unsupported operation in %s\n",
+			binary_filename);
+		break;
+	    case DW_LNE_set_discriminator:
+		/* TODO:currently ignore */
+		uleb128((char **)&p);
+		break;
+	    default:
+		kprintf("Unknown extended opcode: %d in %s\n",
+			op, binary_filename);
+	    }
+	    break;
+	default: {
+            uint8_t adjusted_opcode = op - header.opcode_base;
+            uint8_t operation_advance = adjusted_opcode / header.line_range;
+            /* NOTE: this code doesn't support VLIW */
+            addr += operation_advance * header.minimum_instruction_length;
+            line += header.line_base + (adjusted_opcode % header.line_range);
+	    FILL_LINE();
+	}
+	}
+    }
+    *debug_line = (char *)p;
+    return 0;
+}
+
+static int
+parse_debug_line(int num_traces, void **traces,
+		 char *debug_line, unsigned long size,
+		 obj_info_t *obj, line_info_t *lines, int offset)
+{
+    char *debug_line_end = debug_line + size;
+    while (debug_line < debug_line_end) {
+	if (parse_debug_line_cu(num_traces, traces, &debug_line, obj, lines, offset))
+	    return -1;
+    }
+    if (debug_line != debug_line_end) {
+	kprintf("Unexpected size of .debug_line in %s\n",
+		binary_filename);
+    }
+    return 0;
+}
+
+/* read file and fill lines */
+static uintptr_t
+fill_lines(int num_traces, void **traces, int check_debuglink,
+	   obj_info_t **objp, line_info_t *lines, int offset);
+
+static void
+append_obj(obj_info_t **objp)
+{
+    obj_info_t *newobj = calloc(1, sizeof(obj_info_t));
+    if (*objp) (*objp)->next = newobj;
+    *objp = newobj;
+}
+
+#ifdef USE_ELF
+/* Ideally we should check 4 paths to follow gnu_debuglink:
+ *
+ *   - /usr/lib/debug/.build-id/ab/cdef1234.debug
+ *   - /usr/bin/ruby.debug
+ *   - /usr/bin/.debug/ruby.debug
+ *   - /usr/lib/debug/usr/bin/ruby.debug.
+ *
+ * but we handle only two cases for now as the two formats are
+ * used by some linux distributions.
+ *
+ * See GDB's info for detail.
+ * https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html
+ */
+
+// check the path pattern of "/usr/lib/debug/usr/bin/ruby.debug"
+static void
+follow_debuglink(const char *debuglink, int num_traces, void **traces,
+		 obj_info_t **objp, line_info_t *lines, int offset)
+{
+    static const char global_debug_dir[] = "/usr/lib/debug";
+    const size_t global_debug_dir_len = sizeof(global_debug_dir) - 1;
+    char *p;
+    obj_info_t *o1 = *objp, *o2;
+    size_t len;
+
+    p = strrchr(binary_filename, '/');
+    if (!p) {
+	return;
+    }
+    p[1] = '\0';
+
+    len = strlen(binary_filename);
+    if (len >= PATH_MAX - global_debug_dir_len)
+	len = PATH_MAX - global_debug_dir_len - 1;
+    memmove(binary_filename + global_debug_dir_len, binary_filename, len);
+    memcpy(binary_filename, global_debug_dir, global_debug_dir_len);
+    len += global_debug_dir_len;
+    strlcpy(binary_filename + len, debuglink, PATH_MAX - len);
+
+    append_obj(objp);
+    o2 = *objp;
+    o2->base_addr = o1->base_addr;
+    o2->path = o1->path;
+    fill_lines(num_traces, traces, 0, objp, lines, offset);
+}
+
+// check the path pattern of "/usr/lib/debug/.build-id/ab/cdef1234.debug"
+static void
+follow_debuglink_build_id(const char *build_id, size_t build_id_size, int num_traces, void **traces,
+                          obj_info_t **objp, line_info_t *lines, int offset)
+{
+    static const char global_debug_dir[] = "/usr/lib/debug/.build-id/";
+    const size_t global_debug_dir_len = sizeof(global_debug_dir) - 1;
+    char *p;
+    obj_info_t *o1 = *objp, *o2;
+    size_t i;
+
+    if (PATH_MAX < global_debug_dir_len + 1 + build_id_size * 2 + 6) return;
+
+    memcpy(binary_filename, global_debug_dir, global_debug_dir_len);
+    p = binary_filename + global_debug_dir_len;
+    for (i = 0; i < build_id_size; i++) {
+        static const char tbl[] = "0123456789abcdef";
+        unsigned char n = build_id[i];
+        *p++ = tbl[n / 16];
+        *p++ = tbl[n % 16];
+        if (i == 0) *p++ = '/';
+    }
+    strcpy(p, ".debug");
+
+    append_obj(objp);
+    o2 = *objp;
+    o2->base_addr = o1->base_addr;
+    o2->path = o1->path;
+    fill_lines(num_traces, traces, 0, objp, lines, offset);
+}
+#endif
+
+enum
+{
+    DW_TAG_compile_unit = 0x11,
+    DW_TAG_inlined_subroutine = 0x1d,
+    DW_TAG_subprogram = 0x2e,
+};
+
+/* Attributes encodings */
+enum
+{
+    DW_AT_sibling = 0x01,
+    DW_AT_location = 0x02,
+    DW_AT_name = 0x03,
+    /* Reserved 0x04 */
+    /* Reserved 0x05 */
+    /* Reserved 0x06 */
+    /* Reserved 0x07 */
+    /* Reserved 0x08 */
+    DW_AT_ordering = 0x09,
+    /* Reserved 0x0a */
+    DW_AT_byte_size = 0x0b,
+    /* Reserved 0x0c */
+    DW_AT_bit_size = 0x0d,
+    /* Reserved 0x0e */
+    /* Reserved 0x0f */
+    DW_AT_stmt_list = 0x10,
+    DW_AT_low_pc = 0x11,
+    DW_AT_high_pc = 0x12,
+    DW_AT_language = 0x13,
+    /* Reserved 0x14 */
+    DW_AT_discr = 0x15,
+    DW_AT_discr_value = 0x16,
+    DW_AT_visibility = 0x17,
+    DW_AT_import = 0x18,
+    DW_AT_string_length = 0x19,
+    DW_AT_common_reference = 0x1a,
+    DW_AT_comp_dir = 0x1b,
+    DW_AT_const_value = 0x1c,
+    DW_AT_containing_type = 0x1d,
+    DW_AT_default_value = 0x1e,
+    /* Reserved 0x1f */
+    DW_AT_inline = 0x20,
+    DW_AT_is_optional = 0x21,
+    DW_AT_lower_bound = 0x22,
+    /* Reserved 0x23 */
+    /* Reserved 0x24 */
+    DW_AT_producer = 0x25,
+    /* Reserved 0x26 */
+    DW_AT_prototyped = 0x27,
+    /* Reserved 0x28 */
+    /* Reserved 0x29 */
+    DW_AT_return_addr = 0x2a,
+    /* Reserved 0x2b */
+    DW_AT_start_scope = 0x2c,
+    /* Reserved 0x2d */
+    DW_AT_bit_stride = 0x2e,
+    DW_AT_upper_bound = 0x2f,
+    /* Reserved 0x30 */
+    DW_AT_abstract_origin = 0x31,
+    DW_AT_accessibility = 0x32,
+    DW_AT_address_class = 0x33,
+    DW_AT_artificial = 0x34,
+    DW_AT_base_types = 0x35,
+    DW_AT_calling_convention = 0x36,
+    DW_AT_count = 0x37,
+    DW_AT_data_member_location = 0x38,
+    DW_AT_decl_column = 0x39,
+    DW_AT_decl_file = 0x3a,
+    DW_AT_decl_line = 0x3b,
+    DW_AT_declaration = 0x3c,
+    DW_AT_discr_list = 0x3d,
+    DW_AT_encoding = 0x3e,
+    DW_AT_external = 0x3f,
+    DW_AT_frame_base = 0x40,
+    DW_AT_friend = 0x41,
+    DW_AT_identifier_case = 0x42,
+    /* Reserved 0x43 */
+    DW_AT_namelist_item = 0x44,
+    DW_AT_priority = 0x45,
+    DW_AT_segment = 0x46,
+    DW_AT_specification = 0x47,
+    DW_AT_static_link = 0x48,
+    DW_AT_type = 0x49,
+    DW_AT_use_location = 0x4a,
+    DW_AT_variable_parameter = 0x4b,
+    DW_AT_virtuality = 0x4c,
+    DW_AT_vtable_elem_location = 0x4d,
+    DW_AT_allocated = 0x4e,
+    DW_AT_associated = 0x4f,
+    DW_AT_data_location = 0x50,
+    DW_AT_byte_stride = 0x51,
+    DW_AT_entry_pc = 0x52,
+    DW_AT_use_UTF8 = 0x53,
+    DW_AT_extension = 0x54,
+    DW_AT_ranges = 0x55,
+    DW_AT_trampoline = 0x56,
+    DW_AT_call_column = 0x57,
+    DW_AT_call_file = 0x58,
+    DW_AT_call_line = 0x59,
+    DW_AT_description = 0x5a,
+    DW_AT_binary_scale = 0x5b,
+    DW_AT_decimal_scale = 0x5c,
+    DW_AT_small = 0x5d,
+    DW_AT_decimal_sign = 0x5e,
+    DW_AT_digit_count = 0x5f,
+    DW_AT_picture_string = 0x60,
+    DW_AT_mutable = 0x61,
+    DW_AT_threads_scaled = 0x62,
+    DW_AT_explicit = 0x63,
+    DW_AT_object_pointer = 0x64,
+    DW_AT_endianity = 0x65,
+    DW_AT_elemental = 0x66,
+    DW_AT_pure = 0x67,
+    DW_AT_recursive = 0x68,
+    DW_AT_signature = 0x69,
+    DW_AT_main_subprogram = 0x6a,
+    DW_AT_data_bit_offset = 0x6b,
+    DW_AT_const_expr = 0x6c,
+    DW_AT_enum_class = 0x6d,
+    DW_AT_linkage_name = 0x6e,
+    DW_AT_string_length_bit_size = 0x6f,
+    DW_AT_string_length_byte_size = 0x70,
+    DW_AT_rank = 0x71,
+    DW_AT_str_offsets_base = 0x72,
+    DW_AT_addr_base = 0x73,
+    DW_AT_rnglists_base = 0x74,
+    /* Reserved 0x75 */
+    DW_AT_dwo_name = 0x76,
+    DW_AT_reference = 0x77,
+    DW_AT_rvalue_reference = 0x78,
+    DW_AT_macros = 0x79,
+    DW_AT_call_all_calls = 0x7a,
+    DW_AT_call_all_source_calls = 0x7b,
+    DW_AT_call_all_tail_calls = 0x7c,
+    DW_AT_call_return_pc = 0x7d,
+    DW_AT_call_value = 0x7e,
+    DW_AT_call_origin = 0x7f,
+    DW_AT_call_parameter = 0x80,
+    DW_AT_call_pc = 0x81,
+    DW_AT_call_tail_call = 0x82,
+    DW_AT_call_target = 0x83,
+    DW_AT_call_target_clobbered = 0x84,
+    DW_AT_call_data_location = 0x85,
+    DW_AT_call_data_value = 0x86,
+    DW_AT_noreturn = 0x87,
+    DW_AT_alignment = 0x88,
+    DW_AT_export_symbols = 0x89,
+    DW_AT_deleted = 0x8a,
+    DW_AT_defaulted = 0x8b,
+    DW_AT_loclists_base = 0x8c,
+    DW_AT_lo_user = 0x2000,
+    DW_AT_hi_user = 0x3fff
+};
+
+/* Attribute form encodings */
+enum
+{
+    DW_FORM_addr = 0x01,
+    /* Reserved 0x02 */
+    DW_FORM_block2 = 0x03,
+    DW_FORM_block4 = 0x04,
+    DW_FORM_data2 = 0x05,
+    DW_FORM_data4 = 0x06,
+    DW_FORM_data8 = 0x07,
+    DW_FORM_string = 0x08,
+    DW_FORM_block = 0x09,
+    DW_FORM_block1 = 0x0a,
+    DW_FORM_data1 = 0x0b,
+    DW_FORM_flag = 0x0c,
+    DW_FORM_sdata = 0x0d,
+    DW_FORM_strp = 0x0e,
+    DW_FORM_udata = 0x0f,
+    DW_FORM_ref_addr = 0x10,
+    DW_FORM_ref1 = 0x11,
+    DW_FORM_ref2 = 0x12,
+    DW_FORM_ref4 = 0x13,
+    DW_FORM_ref8 = 0x14,
+    DW_FORM_ref_udata = 0x15,
+    DW_FORM_indirect = 0x16,
+    DW_FORM_sec_offset = 0x17,
+    DW_FORM_exprloc = 0x18,
+    DW_FORM_flag_present = 0x19,
+    DW_FORM_strx = 0x1a,
+    DW_FORM_addrx = 0x1b,
+    DW_FORM_ref_sup4 = 0x1c,
+    DW_FORM_strp_sup = 0x1d,
+    DW_FORM_data16 = 0x1e,
+    DW_FORM_line_strp = 0x1f,
+    DW_FORM_ref_sig8 = 0x20,
+    DW_FORM_implicit_const = 0x21,
+    DW_FORM_loclistx = 0x22,
+    DW_FORM_rnglistx = 0x23,
+    DW_FORM_ref_sup8 = 0x24,
+    DW_FORM_strx1 = 0x25,
+    DW_FORM_strx2 = 0x26,
+    DW_FORM_strx3 = 0x27,
+    DW_FORM_strx4 = 0x28,
+    DW_FORM_addrx1 = 0x29,
+    DW_FORM_addrx2 = 0x2a,
+    DW_FORM_addrx3 = 0x2b,
+    DW_FORM_addrx4 = 0x2c
+};
+
+enum {
+    VAL_none = 0,
+    VAL_cstr = 1,
+    VAL_data = 2,
+    VAL_uint = 3,
+    VAL_int = 4
+};
+
+# define ABBREV_TABLE_SIZE 256
+typedef struct {
+    obj_info_t *obj;
+    char *file;
+    char *current_cu;
+    uint64_t current_low_pc;
+    char *debug_line_cu_end;
+    char *debug_line_files;
+    char *debug_line_directories;
+    char *p;
+    char *cu_end;
+    char *pend;
+    char *q0;
+    char *q;
+    int format; // 4 or 8
+    uint8_t address_size;
+    int level;
+    char *abbrev_table[ABBREV_TABLE_SIZE];
+} DebugInfoReader;
+
+typedef struct {
+    ptrdiff_t pos;
+    int tag;
+    int has_children;
+} DIE;
+
+typedef struct {
+    union {
+        char *ptr;
+        uint64_t uint64;
+        int64_t int64;
+    } as;
+    uint64_t off;
+    uint64_t at;
+    uint64_t form;
+    size_t size;
+    int type;
+} DebugInfoValue;
+
+/* TODO: Big Endian */
+#define MERGE_2INTS(a,b,sz) (((uint64_t)(b)<<sz)|(a))
+
+static uint16_t
+get_uint16(const uint8_t *p)
+{
+    return (uint16_t)MERGE_2INTS(p[0],p[1],8);
+}
+
+static uint32_t
+get_uint32(const uint8_t *p)
+{
+    return (uint32_t)MERGE_2INTS(get_uint16(p),get_uint16(p+2),16);
+}
+
+static uint64_t
+get_uint64(const uint8_t *p)
+{
+    return MERGE_2INTS(get_uint32(p),get_uint32(p+4),32);
+}
+
+static uint8_t
+read_uint8(char **ptr)
+{
+    const unsigned char *p = (const unsigned char *)*ptr;
+    *ptr = (char *)(p + 1);
+    return *p;
+}
+
+static uint16_t
+read_uint16(char **ptr)
+{
+    const unsigned char *p = (const unsigned char *)*ptr;
+    *ptr = (char *)(p + 2);
+    return get_uint16(p);
+}
+
+static uint32_t
+read_uint24(char **ptr)
+{
+    const unsigned char *p = (const unsigned char *)*ptr;
+    *ptr = (char *)(p + 3);
+    return (*p << 16) | get_uint16(p+1);
+}
+
+static uint32_t
+read_uint32(char **ptr)
+{
+    const unsigned char *p = (const unsigned char *)*ptr;
+    *ptr = (char *)(p + 4);
+    return get_uint32(p);
+}
+
+static uint64_t
+read_uint64(char **ptr)
+{
+    const unsigned char *p = (const unsigned char *)*ptr;
+    *ptr = (char *)(p + 8);
+    return get_uint64(p);
+}
+
+static uintptr_t
+read_uintptr(char **ptr)
+{
+    const unsigned char *p = (const unsigned char *)*ptr;
+    *ptr = (char *)(p + SIZEOF_VOIDP);
+#if SIZEOF_VOIDP == 8
+    return get_uint64(p);
+#else
+    return get_uint32(p);
+#endif
+}
+
+static uint64_t
+read_uint(DebugInfoReader *reader)
+{
+    if (reader->format == 4) {
+        return read_uint32(&reader->p);
+    } else { /* 64 bit */
+        return read_uint64(&reader->p);
+    }
+}
+
+static uint64_t
+read_uleb128(DebugInfoReader *reader)
+{
+    return uleb128(&reader->p);
+}
+
+static int64_t
+read_sleb128(DebugInfoReader *reader)
+{
+    return sleb128(&reader->p);
+}
+
+static void
+debug_info_reader_init(DebugInfoReader *reader, obj_info_t *obj)
+{
+    reader->file = obj->mapped;
+    reader->obj = obj;
+    reader->p = obj->debug_info.ptr;
+    reader->pend = obj->debug_info.ptr + obj->debug_info.size;
+    reader->debug_line_cu_end = obj->debug_line.ptr;
+    reader->current_low_pc = 0;
+}
+
+static void
+di_read_debug_abbrev_cu(DebugInfoReader *reader)
+{
+    uint64_t prev = 0;
+    char *p = reader->q0;
+    for (;;) {
+        uint64_t abbrev_number = uleb128(&p);
+        if (abbrev_number <= prev) break;
+        if (abbrev_number < ABBREV_TABLE_SIZE) {
+            reader->abbrev_table[abbrev_number] = p;
+        }
+        prev = abbrev_number;
+        uleb128(&p); /* tag */
+        p++; /* has_children */
+        /* skip content */
+        for (;;) {
+            uint64_t at = uleb128(&p);
+            uint64_t form = uleb128(&p);
+            if (!at && !form) break;
+        }
+    }
+}
+
+static int
+di_read_debug_line_cu(DebugInfoReader *reader)
+{
+    const char *p;
+    struct LineNumberProgramHeader header;
+
+    p = (const char *)reader->debug_line_cu_end;
+    if (parse_debug_line_header(&p, &header))
+        return -1;
+
+    reader->debug_line_cu_end = (char *)header.cu_end;
+    reader->debug_line_directories = (char *)header.include_directories;
+    reader->debug_line_files = (char *)header.filenames;
+
+    return 0;
+}
+
+static void
+set_uint_value(DebugInfoValue *v, uint64_t n)
+{
+    v->as.uint64 = n;
+    v->type = VAL_uint;
+}
+
+static void
+set_int_value(DebugInfoValue *v, int64_t n)
+{
+    v->as.int64 = n;
+    v->type = VAL_int;
+}
+
+static void
+set_cstr_value(DebugInfoValue *v, char *s)
+{
+    v->as.ptr = s;
+    v->off = 0;
+    v->type = VAL_cstr;
+}
+
+static void
+set_cstrp_value(DebugInfoValue *v, char *s, uint64_t off)
+{
+    v->as.ptr = s;
+    v->off = off;
+    v->type = VAL_cstr;
+}
+
+static void
+set_data_value(DebugInfoValue *v, char *s)
+{
+    v->as.ptr = s;
+    v->type = VAL_data;
+}
+
+static const char *
+get_cstr_value(DebugInfoValue *v)
+{
+    if (v->as.ptr) {
+        return v->as.ptr + v->off;
+    } else {
+        return NULL;
+    }
+}
+
+static void
+debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoValue *v)
+{
+    switch (form) {
+      case DW_FORM_addr:
+        if (reader->address_size == 4) {
+            set_uint_value(v, read_uint32(&reader->p));
+        } else if (reader->address_size == 8) {
+            set_uint_value(v, read_uint64(&reader->p));
+        } else {
+            fprintf(stderr,"unknown address_size:%d", reader->address_size);
+            abort();
+        }
+        break;
+      case DW_FORM_block2:
+        v->size = read_uint16(&reader->p);
+        set_data_value(v, reader->p);
+        reader->p += v->size;
+        break;
+      case DW_FORM_block4:
+        v->size = read_uint32(&reader->p);
+        set_data_value(v, reader->p);
+        reader->p += v->size;
+        break;
+      case DW_FORM_data2:
+        set_uint_value(v, read_uint16(&reader->p));
+        break;
+      case DW_FORM_data4:
+        set_uint_value(v, read_uint32(&reader->p));
+        break;
+      case DW_FORM_data8:
+        set_uint_value(v, read_uint64(&reader->p));
+        break;
+      case DW_FORM_string:
+        v->size = strlen(reader->p);
+        set_cstr_value(v, reader->p);
+        reader->p += v->size + 1;
+        break;
+      case DW_FORM_block:
+        v->size = uleb128(&reader->p);
+        set_data_value(v, reader->p);
+        reader->p += v->size;
+        break;
+      case DW_FORM_block1:
+        v->size = read_uint8(&reader->p);
+        set_data_value(v, reader->p);
+        reader->p += v->size;
+        break;
+      case DW_FORM_data1:
+        set_uint_value(v, read_uint8(&reader->p));
+        break;
+      case DW_FORM_flag:
+        set_uint_value(v, read_uint8(&reader->p));
+        break;
+      case DW_FORM_sdata:
+        set_int_value(v, read_sleb128(reader));
+        break;
+      case DW_FORM_strp:
+        set_cstrp_value(v, reader->obj->debug_str.ptr, read_uint(reader));
+        break;
+      case DW_FORM_udata:
+        set_uint_value(v, read_uleb128(reader));
+        break;
+      case DW_FORM_ref_addr:
+        if (reader->address_size == 4) {
+            set_uint_value(v, read_uint32(&reader->p));
+        } else if (reader->address_size == 8) {
+            set_uint_value(v, read_uint64(&reader->p));
+        } else {
+            fprintf(stderr,"unknown address_size:%d", reader->address_size);
+            abort();
+        }
+        break;
+      case DW_FORM_ref1:
+        set_uint_value(v, read_uint8(&reader->p));
+        break;
+      case DW_FORM_ref2:
+        set_uint_value(v, read_uint16(&reader->p));
+        break;
+      case DW_FORM_ref4:
+        set_uint_value(v, read_uint32(&reader->p));
+        break;
+      case DW_FORM_ref8:
+        set_uint_value(v, read_uint64(&reader->p));
+        break;
+      case DW_FORM_ref_udata:
+        set_uint_value(v, uleb128(&reader->p));
+        break;
+      case DW_FORM_indirect:
+        /* TODO: read the referred value */
+        set_uint_value(v, uleb128(&reader->p));
+        break;
+      case DW_FORM_sec_offset:
+        set_uint_value(v, read_uint(reader)); /* offset */
+        /* addrptr: debug_addr */
+        /* lineptr: debug_line */
+        /* loclist: debug_loclists */
+        /* loclistptr: debug_loclists */
+        /* macptr: debug_macro */
+        /* rnglist: debug_rnglists */
+        /* rnglistptr: debug_rnglists */
+        /* stroffsetsptr: debug_str_offsets */
+        break;
+      case DW_FORM_exprloc:
+        v->size = (size_t)read_uleb128(reader);
+        set_data_value(v, reader->p);
+        reader->p += v->size;
+        break;
+      case DW_FORM_flag_present:
+        set_uint_value(v, 1);
+        break;
+      case DW_FORM_strx:
+        set_uint_value(v, uleb128(&reader->p));
+        break;
+      case DW_FORM_addrx:
+        /* TODO: read .debug_addr */
+        set_uint_value(v, uleb128(&reader->p));
+        break;
+      case DW_FORM_ref_sup4:
+        set_uint_value(v, read_uint32(&reader->p));
+        break;
+      case DW_FORM_strp_sup:
+        set_uint_value(v, read_uint(reader));
+        /* *p = reader->sup_file + reader->sup_str->sh_offset + ret; */
+        break;
+      case DW_FORM_data16:
+        v->size = 16;
+        set_data_value(v, reader->p);
+        reader->p += v->size;
+        break;
+      case DW_FORM_line_strp:
+        set_uint_value(v, read_uint(reader));
+        /* *p = reader->file + reader->line->sh_offset + ret; */
+        break;
+      case DW_FORM_ref_sig8:
+        set_uint_value(v, read_uint64(&reader->p));
+        break;
+      case DW_FORM_implicit_const:
+        set_int_value(v, sleb128(&reader->q));
+        break;
+      case DW_FORM_loclistx:
+        set_uint_value(v, read_uleb128(reader));
+        break;
+      case DW_FORM_rnglistx:
+        set_uint_value(v, read_uleb128(reader));
+        break;
+      case DW_FORM_ref_sup8:
+        set_uint_value(v, read_uint64(&reader->p));
+        break;
+      case DW_FORM_strx1:
+        set_uint_value(v, read_uint8(&reader->p));
+        break;
+      case DW_FORM_strx2:
+        set_uint_value(v, read_uint16(&reader->p));
+        break;
+      case DW_FORM_strx3:
+        set_uint_value(v, read_uint24(&reader->p));
+        break;
+      case DW_FORM_strx4:
+        set_uint_value(v, read_uint32(&reader->p));
+        break;
+      case DW_FORM_addrx1:
+        set_uint_value(v, read_uint8(&reader->p));
+        break;
+      case DW_FORM_addrx2:
+        set_uint_value(v, read_uint16(&reader->p));
+        break;
+      case DW_FORM_addrx3:
+        set_uint_value(v, read_uint24(&reader->p));
+        break;
+      case DW_FORM_addrx4:
+        set_uint_value(v, read_uint32(&reader->p));
+        break;
+      case 0:
+        goto fail;
+        break;
+    }
+    return;
+
+  fail:
+    fprintf(stderr, "%d: unsupported form: %#"PRIx64"\n", __LINE__, form);
+    exit(1);
+}
+
+/* find abbrev in current compilation unit */
+static char *
+di_find_abbrev(DebugInfoReader *reader, uint64_t abbrev_number)
+{
+    char *p;
+    if (abbrev_number < ABBREV_TABLE_SIZE) {
+        return reader->abbrev_table[abbrev_number];
+    }
+    p = reader->abbrev_table[ABBREV_TABLE_SIZE-1];
+    /* skip 255th record */
+    uleb128(&p); /* tag */
+    p++; /* has_children */
+    /* skip content */
+    for (;;) {
+        uint64_t at = uleb128(&p);
+        uint64_t form = uleb128(&p);
+        if (!at && !form) break;
+    }
+    for (uint64_t n = uleb128(&p); abbrev_number != n; n = uleb128(&p)) {
+        if (n == 0) {
+            fprintf(stderr,"%d: Abbrev Number %"PRId64" not found\n",__LINE__, abbrev_number);
+            exit(1);
+        }
+        uleb128(&p); /* tag */
+        p++; /* has_children */
+        /* skip content */
+        for (;;) {
+            uint64_t at = uleb128(&p);
+            uint64_t form = uleb128(&p);
+            if (!at && !form) break;
+        }
+    }
+    return p;
+}
+
+#if 0
+static void
+hexdump0(const unsigned char *p, size_t n)
+{
+    size_t i;
+    fprintf(stderr, "     0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F\n");
+    for (i=0; i < n; i++){
+        switch (i & 15) {
+          case 0:
+            fprintf(stderr, "%02zd: %02X ", i/16, p[i]);
+            break;
+          case 15:
+            fprintf(stderr, "%02X\n", p[i]);
+            break;
+          default:
+            fprintf(stderr, "%02X ", p[i]);
+            break;
+        }
+    }
+    if ((i & 15) != 15) {
+        fprintf(stderr, "\n");
+    }
+}
+#define hexdump(p,n) hexdump0((const unsigned char *)p, n)
+
+static void
+div_inspect(DebugInfoValue *v)
+{
+    switch (v->type) {
+      case VAL_uint:
+        fprintf(stderr,"%d: type:%d size:%zx v:%lx\n",__LINE__,v->type,v->size,v->as.uint64);
+        break;
+      case VAL_int:
+        fprintf(stderr,"%d: type:%d size:%zx v:%ld\n",__LINE__,v->type,v->size,(int64_t)v->as.uint64);
+        break;
+      case VAL_cstr:
+        fprintf(stderr,"%d: type:%d size:%zx v:'%s'\n",__LINE__,v->type,v->size,v->as.ptr);
+        break;
+      case VAL_data:
+        fprintf(stderr,"%d: type:%d size:%zx v:\n",__LINE__,v->type,v->size);
+        hexdump(v->as.ptr, 16);
+        break;
+    }
+}
+#endif
+
+static DIE *
+di_read_die(DebugInfoReader *reader, DIE *die)
+{
+    uint64_t abbrev_number = uleb128(&reader->p);
+    if (abbrev_number == 0) {
+        reader->level--;
+        return NULL;
+    }
+
+    reader->q = di_find_abbrev(reader, abbrev_number);
+
+    die->pos = reader->p - reader->obj->debug_info.ptr - 1;
+    die->tag = (int)uleb128(&reader->q); /* tag */
+    die->has_children = *reader->q++; /* has_children */
+    if (die->has_children) {
+        reader->level++;
+    }
+    return die;
+}
+
+static DebugInfoValue *
+di_read_record(DebugInfoReader *reader, DebugInfoValue *vp)
+{
+    uint64_t at = uleb128(&reader->q);
+    uint64_t form = uleb128(&reader->q);
+    if (!at || !form) return NULL;
+    vp->at = at;
+    vp->form = form;
+    debug_info_reader_read_value(reader, form, vp);
+    return vp;
+}
+
+static void
+di_skip_records(DebugInfoReader *reader)
+{
+    for (;;) {
+        DebugInfoValue v = {{}};
+        uint64_t at = uleb128(&reader->q);
+        uint64_t form = uleb128(&reader->q);
+        if (!at || !form) return;
+        debug_info_reader_read_value(reader, form, &v);
+    }
+}
+
+typedef struct {
+    uint64_t low_pc;
+    uint64_t high_pc;
+    uint64_t ranges;
+    bool low_pc_set;
+    bool high_pc_set;
+    bool ranges_set;
+} ranges_t;
+
+static void
+ranges_set(ranges_t *ptr, DebugInfoValue *v)
+{
+    switch (v->at) {
+      case DW_AT_low_pc:
+        ptr->low_pc = v->as.uint64;
+        ptr->low_pc_set = true;
+        break;
+      case DW_AT_high_pc:
+        if (v->form == DW_FORM_addr) {
+            ptr->high_pc = v->as.uint64;
+        }
+        else {
+            ptr->high_pc = ptr->low_pc + v->as.uint64;
+        }
+        ptr->high_pc_set = true;
+        break;
+      case DW_AT_ranges:
+        ptr->ranges = v->as.uint64;
+        ptr->ranges_set = true;
+        break;
+    }
+}
+
+static uintptr_t
+ranges_include(DebugInfoReader *reader, ranges_t *ptr, uint64_t addr)
+{
+    if (ptr->high_pc_set) {
+        if (ptr->ranges_set || !ptr->low_pc_set) {
+            exit(1);
+        }
+        if (ptr->low_pc <= addr && addr <= ptr->high_pc) {
+            return (uintptr_t)ptr->low_pc;
+        }
+    }
+    else if (ptr->ranges_set) {
+        /* TODO: support base address selection entry */
+        char *p = reader->obj->debug_ranges.ptr + ptr->ranges;
+        uint64_t base = ptr->low_pc_set ? ptr->low_pc : reader->current_low_pc;
+        for (;;) {
+            uintptr_t from = read_uintptr(&p);
+            uintptr_t to = read_uintptr(&p);
+            if (!from && !to) break;
+            if (from == UINTPTR_MAX) {
+                /* base address selection entry */
+                base = to;
+            }
+            else if (base + from <= addr && addr < base + to) {
+                return from;
+            }
+        }
+    }
+    else if (ptr->low_pc_set) {
+        if (ptr->low_pc == addr) {
+            return (uintptr_t)ptr->low_pc;
+        }
+    }
+    return false;
+}
+
+#if 0
+static void
+ranges_inspect(DebugInfoReader *reader, ranges_t *ptr)
+{
+    if (ptr->high_pc_set) {
+        if (ptr->ranges_set || !ptr->low_pc_set) {
+            fprintf(stderr,"low_pc_set:%d high_pc_set:%d ranges_set:%d\n",ptr->low_pc_set,ptr->high_pc_set,ptr->ranges_set);
+            exit(1);
+        }
+        fprintf(stderr,"low_pc:%"PRIx64" high_pc:%"PRIx64"\n",ptr->low_pc,ptr->high_pc);
+    }
+    else if (ptr->ranges_set) {
+        char *p = reader->obj->debug_ranges.ptr + ptr->ranges;
+        fprintf(stderr,"low_pc:%"PRIx64" ranges:%"PRIx64" %lx ",ptr->low_pc,ptr->ranges, p-reader->obj->mapped);
+        for (;;) {
+            uintptr_t from = read_uintptr(&p);
+            uintptr_t to = read_uintptr(&p);
+            if (!from && !to) break;
+            fprintf(stderr,"%"PRIx64"-%"PRIx64" ",ptr->low_pc+from,ptr->low_pc+to);
+        }
+        fprintf(stderr,"\n");
+    }
+    else if (ptr->low_pc_set) {
+        fprintf(stderr,"low_pc:%"PRIx64"\n",ptr->low_pc);
+    }
+    else {
+        fprintf(stderr,"empty\n");
+    }
+}
+#endif
+
+static int
+di_read_cu(DebugInfoReader *reader)
+{
+    uint64_t unit_length;
+    uint16_t version;
+    uint64_t debug_abbrev_offset;
+    reader->format = 4;
+    reader->current_cu = reader->p;
+    unit_length = read_uint32(&reader->p);
+    if (unit_length == 0xffffffff) {
+        unit_length = read_uint64(&reader->p);
+        reader->format = 8;
+    }
+    reader->cu_end = reader->p + unit_length;
+    version = read_uint16(&reader->p);
+    if (version > 5) {
+        return -1;
+    }
+    else if (version == 5) {
+        /* unit_type = */ read_uint8(&reader->p);
+        reader->address_size = read_uint8(&reader->p);
+        debug_abbrev_offset = read_uint(reader);
+    }
+    else {
+        debug_abbrev_offset = read_uint(reader);
+        reader->address_size = read_uint8(&reader->p);
+    }
+    reader->q0 = reader->obj->debug_abbrev.ptr + debug_abbrev_offset;
+
+    reader->level = 0;
+    di_read_debug_abbrev_cu(reader);
+    if (di_read_debug_line_cu(reader)) return -1;
+
+#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER_BUILD_DATE)
+    /* Though DWARF specifies "the applicable base address defaults to the base
+       address of the compilation unit", but GCC seems to use zero as default */
+#else
+    do {
+        DIE die;
+
+        if (!di_read_die(reader, &die)) continue;
+
+        if (die.tag != DW_TAG_compile_unit) {
+            di_skip_records(reader);
+            break;
+        }
+
+        /* enumerate abbrev */
+        for (;;) {
+            DebugInfoValue v = {{}};
+            if (!di_read_record(reader, &v)) break;
+            switch (v.at) {
+              case DW_AT_low_pc:
+                reader->current_low_pc = v.as.uint64;
+                break;
+            }
+        }
+    } while (0);
+#endif
+    return 0;
+}
+
+static void
+read_abstract_origin(DebugInfoReader *reader, uint64_t abstract_origin, line_info_t *line)
+{
+    char *p = reader->p;
+    char *q = reader->q;
+    int level = reader->level;
+    DIE die;
+
+    reader->p = reader->current_cu + abstract_origin;
+    if (!di_read_die(reader, &die)) goto finish;
+
+    /* enumerate abbrev */
+    for (;;) {
+        DebugInfoValue v = {{}};
+        if (!di_read_record(reader, &v)) break;
+        switch (v.at) {
+          case DW_AT_name:
+            line->sname = get_cstr_value(&v);
+            break;
+        }
+    }
+
+  finish:
+    reader->p = p;
+    reader->q = q;
+    reader->level = level;
+}
+
+static void
+debug_info_read(DebugInfoReader *reader, int num_traces, void **traces,
+         line_info_t *lines, int offset) {
+    while (reader->p < reader->cu_end) {
+        DIE die;
+        ranges_t ranges = {};
+        line_info_t line = {};
+
+        if (!di_read_die(reader, &die)) continue;
+        /* fprintf(stderr,"%d:%tx: <%d>\n",__LINE__,die.pos,reader->level,die.tag); */
+
+        if (die.tag != DW_TAG_subprogram && die.tag != DW_TAG_inlined_subroutine) {
+          skip_die:
+            di_skip_records(reader);
+            continue;
+        }
+
+        /* enumerate abbrev */
+        for (;;) {
+            DebugInfoValue v = {{}};
+            /* ptrdiff_t pos = reader->p - reader->p0; */
+            if (!di_read_record(reader, &v)) break;
+            /* fprintf(stderr,"\n%d:%tx: AT:%lx FORM:%lx\n",__LINE__,pos,v.at,v.form); */
+            /* div_inspect(&v); */
+            switch (v.at) {
+              case DW_AT_name:
+                line.sname = get_cstr_value(&v);
+                break;
+              case DW_AT_call_file:
+                fill_filename((int)v.as.uint64, reader->debug_line_directories, reader->debug_line_files, &line, reader->obj);
+                break;
+              case DW_AT_call_line:
+                line.line = (int)v.as.uint64;
+                break;
+              case DW_AT_low_pc:
+              case DW_AT_high_pc:
+              case DW_AT_ranges:
+                ranges_set(&ranges, &v);
+                break;
+              case DW_AT_declaration:
+                goto skip_die;
+              case DW_AT_inline:
+                /* 1 or 3 */
+                break; /* goto skip_die; */
+              case DW_AT_abstract_origin:
+                read_abstract_origin(reader, v.as.uint64, &line);
+                break; /* goto skip_die; */
+            }
+        }
+        /* ranges_inspect(reader, &ranges); */
+        /* fprintf(stderr,"%d:%tx: %x ",__LINE__,diepos,die.tag); */
+        for (int i=offset; i < num_traces; i++) {
+            uintptr_t addr = (uintptr_t)traces[i];
+            uintptr_t offset = addr - reader->obj->base_addr + reader->obj->vmaddr;
+            uintptr_t saddr = ranges_include(reader, &ranges, offset);
+            if (saddr) {
+                /* fprintf(stderr, "%d:%tx: %d %lx->%lx %x %s: %s/%s %d %s %s %s\n",__LINE__,die.pos, i,addr,offset, die.tag,line.sname,line.dirname,line.filename,line.line,reader->obj->path,line.sname,lines[i].sname); */
+                if (lines[i].sname) {
+                    line_info_t *lp = malloc(sizeof(line_info_t));
+                    memcpy(lp, &lines[i], sizeof(line_info_t));
+                    lines[i].next = lp;
+                    lp->dirname = line.dirname;
+                    lp->filename = line.filename;
+                    lp->line = line.line;
+                    lp->saddr = 0;
+                }
+                lines[i].path = reader->obj->path;
+                lines[i].base_addr = line.base_addr;
+                lines[i].sname = line.sname;
+                lines[i].saddr = saddr + reader->obj->base_addr - reader->obj->vmaddr;
+            }
+        }
+    }
+}
+
+#ifdef USE_ELF
+static unsigned long
+uncompress_debug_section(ElfW(Shdr) *shdr, char *file, char **ptr)
+{
+    *ptr = NULL;
+#ifdef SUPPORT_COMPRESSED_DEBUG_LINE
+    ElfW(Chdr) *chdr = (ElfW(Chdr) *)(file + shdr->sh_offset);
+    unsigned long destsize = chdr->ch_size;
+    int ret = 0;
+
+    if (chdr->ch_type != ELFCOMPRESS_ZLIB) {
+	/* unsupported compression type */
+	return 0;
+    }
+
+    *ptr = malloc(destsize);
+    if (!*ptr) return 0;
+    ret = uncompress((Bytef *)*ptr, &destsize,
+	    (const Bytef*)chdr + sizeof(ElfW(Chdr)),
+            shdr->sh_size - sizeof(ElfW(Chdr)));
+    if (ret != Z_OK) goto fail;
+    return destsize;
+
+fail:
+    free(*ptr);
+    *ptr = NULL;
+#endif
+    return 0;
+}
+
+/* read file and fill lines */
+static uintptr_t
+fill_lines(int num_traces, void **traces, int check_debuglink,
+	   obj_info_t **objp, line_info_t *lines, int offset)
+{
+    int i, j;
+    char *shstr;
+    ElfW(Ehdr) *ehdr;
+    ElfW(Shdr) *shdr, *shstr_shdr;
+    ElfW(Shdr) *gnu_debuglink_shdr = NULL;
+    ElfW(Shdr) *note_gnu_build_id = NULL;
+    int fd;
+    off_t filesize;
+    char *file;
+    ElfW(Shdr) *symtab_shdr = NULL, *strtab_shdr = NULL;
+    ElfW(Shdr) *dynsym_shdr = NULL, *dynstr_shdr = NULL;
+    obj_info_t *obj = *objp;
+    uintptr_t dladdr_fbase = 0;
+
+    fd = open(binary_filename, O_RDONLY);
+    if (fd < 0) {
+	goto fail;
+    }
+    filesize = lseek(fd, 0, SEEK_END);
+    if (filesize < 0) {
+	int e = errno;
+	close(fd);
+	kprintf("lseek: %s\n", strerror(e));
+	goto fail;
+    }
+#if SIZEOF_OFF_T > SIZEOF_SIZE_T
+    if (filesize > (off_t)SIZE_MAX) {
+	close(fd);
+	kprintf("Too large file %s\n", binary_filename);
+	goto fail;
+    }
+#endif
+    lseek(fd, 0, SEEK_SET);
+    /* async-signal unsafe */
+    file = (char *)mmap(NULL, (size_t)filesize, PROT_READ, MAP_SHARED, fd, 0);
+    if (file == MAP_FAILED) {
+	int e = errno;
+	close(fd);
+	kprintf("mmap: %s\n", strerror(e));
+	goto fail;
+    }
+    close(fd);
+
+    ehdr = (ElfW(Ehdr) *)file;
+    if (memcmp(ehdr->e_ident, "\177ELF", 4) != 0) {
+	/*
+	 * Huh? Maybe filename was overridden by setproctitle() and
+	 * it match non-elf file.
+	 */
+	goto fail;
+    }
+    obj->mapped = file;
+    obj->mapped_size = (size_t)filesize;
+
+    shdr = (ElfW(Shdr) *)(file + ehdr->e_shoff);
+
+    shstr_shdr = shdr + ehdr->e_shstrndx;
+    shstr = file + shstr_shdr->sh_offset;
+
+    for (i = 0; i < ehdr->e_shnum; i++) {
+        char *section_name = shstr + shdr[i].sh_name;
+	switch (shdr[i].sh_type) {
+	  case SHT_STRTAB:
+	    if (!strcmp(section_name, ".strtab")) {
+		strtab_shdr = shdr + i;
+	    }
+	    else if (!strcmp(section_name, ".dynstr")) {
+		dynstr_shdr = shdr + i;
+	    }
+	    break;
+	  case SHT_SYMTAB:
+	    /* if (!strcmp(section_name, ".symtab")) */
+	    symtab_shdr = shdr + i;
+	    break;
+	  case SHT_DYNSYM:
+	    /* if (!strcmp(section_name, ".dynsym")) */
+	    dynsym_shdr = shdr + i;
+	    break;
+          case SHT_NOTE:
+            if (!strcmp(section_name, ".note.gnu.build-id")) {
+                note_gnu_build_id = shdr + i;
+            }
+            break;
+	  case SHT_PROGBITS:
+	    if (!strcmp(section_name, ".gnu_debuglink")) {
+		gnu_debuglink_shdr = shdr + i;
+	    }
+            else {
+                const char *debug_section_names[] = {
+                    ".debug_abbrev",
+                    ".debug_info",
+                    ".debug_line",
+                    ".debug_ranges",
+                    ".debug_str"
+                };
+
+                for (j=0; j < DWARF_SECTION_COUNT; j++) {
+                    struct dwarf_section *s = obj_dwarf_section_at(obj, j);
+
+                    if (strcmp(section_name, debug_section_names[j]) != 0)
+                        continue;
+
+                    s->ptr = file + shdr[i].sh_offset;
+                    s->size = shdr[i].sh_size;
+                    s->flags = shdr[i].sh_flags;
+                    if (s->flags & SHF_COMPRESSED) {
+                        s->size = uncompress_debug_section(&shdr[i], file, &s->ptr);
+                        if (!s->size) goto fail;
+                    }
+                    break;
+                }
+            }
+	    break;
+	}
+    }
+
+    if (offset == -1) {
+	/* main executable */
+	offset = 0;
+	if (dynsym_shdr && dynstr_shdr) {
+	    char *strtab = file + dynstr_shdr->sh_offset;
+	    ElfW(Sym) *symtab = (ElfW(Sym) *)(file + dynsym_shdr->sh_offset);
+	    int symtab_count = (int)(dynsym_shdr->sh_size / sizeof(ElfW(Sym)));
+            void *handle = dlopen(NULL, RTLD_NOW|RTLD_LOCAL);
+            if (handle) {
+                for (j = 0; j < symtab_count; j++) {
+                    ElfW(Sym) *sym = &symtab[j];
+                    Dl_info info;
+                    void *s;
+                    if (ELF_ST_TYPE(sym->st_info) != STT_FUNC || sym->st_size == 0) continue;
+                    s = dlsym(handle, strtab + sym->st_name);
+                    if (s && dladdr(s, &info)) {
+                        obj->base_addr = dladdr_fbase;
+                        dladdr_fbase = (uintptr_t)info.dli_fbase;
+                        break;
+                    }
+                }
+                dlclose(handle);
+            }
+	    if (ehdr->e_type == ET_EXEC) {
+		obj->base_addr = 0;
+	    }
+	    else {
+		/* PIE (position-independent executable) */
+		obj->base_addr = dladdr_fbase;
+	    }
+	}
+    }
+
+    if (obj->debug_info.ptr && obj->debug_abbrev.ptr) {
+        DebugInfoReader reader;
+        debug_info_reader_init(&reader, obj);
+        i = 0;
+        while (reader.p < reader.pend) {
+            /* fprintf(stderr, "%d:%tx: CU[%d]\n", __LINE__, reader.p - reader.obj->debug_info.ptr, i++); */
+            if (di_read_cu(&reader)) goto use_symtab;
+            debug_info_read(&reader, num_traces, traces, lines, offset);
+        }
+    }
+    else {
+        /* This file doesn't have dwarf, use symtab or dynsym */
+use_symtab:
+        if (!symtab_shdr) {
+            /* This file doesn't have symtab, use dynsym instead */
+            symtab_shdr = dynsym_shdr;
+            strtab_shdr = dynstr_shdr;
+        }
+
+        if (symtab_shdr && strtab_shdr) {
+            char *strtab = file + strtab_shdr->sh_offset;
+            ElfW(Sym) *symtab = (ElfW(Sym) *)(file + symtab_shdr->sh_offset);
+            int symtab_count = (int)(symtab_shdr->sh_size / sizeof(ElfW(Sym)));
+            for (j = 0; j < symtab_count; j++) {
+                ElfW(Sym) *sym = &symtab[j];
+                uintptr_t saddr = (uintptr_t)sym->st_value + obj->base_addr;
+                if (ELF_ST_TYPE(sym->st_info) != STT_FUNC) continue;
+                for (i = offset; i < num_traces; i++) {
+                    uintptr_t d = (uintptr_t)traces[i] - saddr;
+                    if (lines[i].line > 0 || d > (uintptr_t)sym->st_size)
+                        continue;
+                    /* fill symbol name and addr from .symtab */
+                    if (!lines[i].sname) lines[i].sname = strtab + sym->st_name;
+                    lines[i].saddr = saddr;
+                    lines[i].path  = obj->path;
+                    lines[i].base_addr = obj->base_addr;
+                }
+            }
+        }
+    }
+
+    if (!obj->debug_line.ptr) {
+	/* This file doesn't have .debug_line section,
+	   let's check .gnu_debuglink section instead. */
+	if (gnu_debuglink_shdr && check_debuglink) {
+	    follow_debuglink(file + gnu_debuglink_shdr->sh_offset,
+			     num_traces, traces,
+			     objp, lines, offset);
+	}
+        if (note_gnu_build_id && check_debuglink) {
+            ElfW(Nhdr) *nhdr = (ElfW(Nhdr)*) (file + note_gnu_build_id->sh_offset);
+            const char *build_id = (char *)(nhdr + 1) + nhdr->n_namesz;
+            follow_debuglink_build_id(build_id, nhdr->n_descsz,
+			       num_traces, traces,
+			       objp, lines, offset);
+        }
+	goto finish;
+    }
+
+    if (parse_debug_line(num_traces, traces,
+            obj->debug_line.ptr,
+            obj->debug_line.size,
+            obj, lines, offset) == -1)
+        goto fail;
+
+finish:
+    return dladdr_fbase;
+fail:
+    return (uintptr_t)-1;
+}
+#else /* Mach-O */
+/* read file and fill lines */
+static uintptr_t
+fill_lines(int num_traces, void **traces, int check_debuglink,
+        obj_info_t **objp, line_info_t *lines, int offset)
+{
+# ifdef __LP64__
+#  define LP(x) x##_64
+# else
+#  define LP(x) x
+# endif
+    int fd;
+    off_t filesize;
+    char *file, *p = NULL;
+    obj_info_t *obj = *objp;
+    struct LP(mach_header) *header;
+    uintptr_t dladdr_fbase = 0;
+
+    {
+        char *s = binary_filename;
+        char *base = strrchr(binary_filename, '/')+1;
+        size_t max = PATH_MAX;
+        size_t size = strlen(binary_filename);
+        size_t basesize = size - (base - binary_filename);
+        s += size;
+        max -= size;
+        p = s;
+        size = strlcpy(s, ".dSYM/Contents/Resources/DWARF/", max);
+        if (size == 0) goto fail;
+        s += size;
+        max -= size;
+        if (max <= basesize) goto fail;
+        memcpy(s, base, basesize);
+        s[basesize] = 0;
+
+        fd = open(binary_filename, O_RDONLY);
+        if (fd < 0) {
+            *p = 0; /* binary_filename becomes original file name */
+            fd = open(binary_filename, O_RDONLY);
+            if (fd < 0) {
+                goto fail;
+            }
+        }
+    }
+
+    filesize = lseek(fd, 0, SEEK_END);
+    if (filesize < 0) {
+        int e = errno;
+        close(fd);
+        kprintf("lseek: %s\n", strerror(e));
+        goto fail;
+    }
+#if SIZEOF_OFF_T > SIZEOF_SIZE_T
+    if (filesize > (off_t)SIZE_MAX) {
+        close(fd);
+        kprintf("Too large file %s\n", binary_filename);
+        goto fail;
+    }
+#endif
+    lseek(fd, 0, SEEK_SET);
+    /* async-signal unsafe */
+    file = (char *)mmap(NULL, (size_t)filesize, PROT_READ, MAP_SHARED, fd, 0);
+    if (file == MAP_FAILED) {
+        int e = errno;
+        close(fd);
+        kprintf("mmap: %s\n", strerror(e));
+        goto fail;
+    }
+    close(fd);
+
+    obj->mapped = file;
+    obj->mapped_size = (size_t)filesize;
+
+    header = (struct LP(mach_header) *)file;
+    if (header->magic == LP(MH_MAGIC)) {
+        /* non universal binary */
+        p = file;
+    }
+    else if (header->magic == FAT_CIGAM) {
+        struct LP(mach_header) *mhp = _NSGetMachExecuteHeader();
+        struct fat_header *fat = (struct fat_header *)file;
+        char *q = file + sizeof(*fat);
+        uint32_t nfat_arch = __builtin_bswap32(fat->nfat_arch);
+        /* fprintf(stderr,"%d: fat:%s %d\n",__LINE__, binary_filename,nfat_arch); */
+        for (uint32_t i = 0; i < nfat_arch; i++) {
+            struct fat_arch *arch = (struct fat_arch *)q;
+            cpu_type_t cputype = __builtin_bswap32(arch->cputype);
+            cpu_subtype_t cpusubtype = __builtin_bswap32(arch->cpusubtype);
+            uint32_t offset = __builtin_bswap32(arch->offset);
+            /* fprintf(stderr,"%d: fat %d %x/%x %x/%x\n",__LINE__, i, mhp->cputype,mhp->cpusubtype, cputype,cpusubtype); */
+            if (mhp->cputype == cputype &&
+                    (cpu_subtype_t)(mhp->cpusubtype & ~CPU_SUBTYPE_MASK) == cpusubtype) {
+                p = file + offset;
+                file = p;
+                header = (struct LP(mach_header) *)p;
+                if (header->magic == LP(MH_MAGIC)) {
+                    goto found_mach_header;
+                }
+                break;
+            }
+            q += sizeof(*arch);
+        }
+        kprintf("'%s' is not a Mach-O universal binary file!\n",binary_filename);
+        close(fd);
+        goto fail;
+    }
+    else {
+        kprintf("'%s' is not a "
+# ifdef __LP64__
+                "64"
+# else
+                "32"
+# endif
+                "-bit Mach-O file!\n",binary_filename);
+        close(fd);
+        goto fail;
+    }
+found_mach_header:
+    p += sizeof(*header);
+
+    for (uint32_t i = 0; i < (uint32_t)header->ncmds; i++) {
+        struct load_command *lcmd = (struct load_command *)p;
+        switch (lcmd->cmd) {
+          case LP(LC_SEGMENT):
+            {
+                static const char *debug_section_names[] = {
+                    "__debug_abbrev",
+                    "__debug_info",
+                    "__debug_line",
+                    "__debug_ranges",
+                    "__debug_str"
+                };
+                struct LP(segment_command) *scmd = (struct LP(segment_command) *)lcmd;
+                if (strcmp(scmd->segname, "__TEXT") == 0) {
+                    obj->vmaddr = scmd->vmaddr;
+                }
+                else if (strcmp(scmd->segname, "__DWARF") == 0) {
+                    p += sizeof(struct LP(segment_command));
+                    for (uint64_t i = 0; i < scmd->nsects; i++) {
+                        struct LP(section) *sect = (struct LP(section) *)p;
+                        p += sizeof(struct LP(section));
+                        for (int j=0; j < DWARF_SECTION_COUNT; j++) {
+                            struct dwarf_section *s = obj_dwarf_section_at(obj, j);
+
+                            if (strcmp(sect->sectname, debug_section_names[j]) != 0)
+                                continue;
+
+                            s->ptr = file + sect->offset;
+                            s->size = sect->size;
+                            s->flags = sect->flags;
+                            if (s->flags & SHF_COMPRESSED) {
+                                goto fail;
+                            }
+                            break;
+                        }
+                    }
+                }
+            }
+            break;
+
+          case LC_SYMTAB:
+            {
+                struct symtab_command *cmd = (struct symtab_command *)lcmd;
+                struct LP(nlist) *nl = (struct LP(nlist) *)(file + cmd->symoff);
+                char *strtab = file + cmd->stroff, *sname = 0;
+                uint32_t j;
+                uintptr_t saddr = 0;
+                /* kprintf("[%2d]: %x/symtab %p\n", i, cmd->cmd, p); */
+                for (j = 0; j < cmd->nsyms; j++) {
+                    uintptr_t symsize, d;
+                    struct LP(nlist) *e = &nl[j];
+                        /* kprintf("[%2d][%4d]: %02x/%x/%x: %s %llx\n", i, j, e->n_type,e->n_sect,e->n_desc,strtab+e->n_un.n_strx,e->n_value); */
+                    if (e->n_type != N_FUN) continue;
+                    if (e->n_sect) {
+                        saddr = (uintptr_t)e->n_value + obj->base_addr - obj->vmaddr;
+                        sname = strtab + e->n_un.n_strx;
+                        /* kprintf("[%2d][%4d]: %02x/%x/%x: %s %llx\n", i, j, e->n_type,e->n_sect,e->n_desc,strtab+e->n_un.n_strx,e->n_value); */
+                        continue;
+                    }
+                    for (int k = offset; k < num_traces; k++) {
+                        d = (uintptr_t)traces[k] - saddr;
+                        symsize = e->n_value;
+                        /* kprintf("%lx %lx %lx\n",saddr,symsize,traces[k]); */
+                        if (lines[k].line > 0 || d > (uintptr_t)symsize)
+                            continue;
+                        /* fill symbol name and addr from .symtab */
+                        if (!lines[k].sname) lines[k].sname = sname;
+                        lines[k].saddr = saddr;
+                        lines[k].path  = obj->path;
+                        lines[k].base_addr = obj->base_addr;
+                    }
+                }
+            }
+        }
+        p += lcmd->cmdsize;
+    }
+
+    if (obj->debug_info.ptr && obj->debug_abbrev.ptr) {
+        DebugInfoReader reader;
+        debug_info_reader_init(&reader, obj);
+        while (reader.p < reader.pend) {
+            if (di_read_cu(&reader)) goto fail;
+            debug_info_read(&reader, num_traces, traces, lines, offset);
+        }
+    }
+
+    if (parse_debug_line(num_traces, traces,
+            obj->debug_line.ptr,
+            obj->debug_line.size,
+            obj, lines, offset) == -1)
+        goto fail;
+
+    return dladdr_fbase;
+fail:
+    return (uintptr_t)-1;
+}
+#endif
+
+#define HAVE_MAIN_EXE_PATH
+#if defined(__FreeBSD__)
+# include <sys/sysctl.h>
+#endif
+/* ssize_t main_exe_path(void)
+ *
+ * store the path of the main executable to `binary_filename`,
+ * and returns strlen(binary_filename).
+ * it is NUL terminated.
+ */
+#if defined(__linux__) || defined(__NetBSD__)
+static ssize_t
+main_exe_path(void)
+{
+# if defined(__linux__)
+#  define PROC_SELF_EXE "/proc/self/exe"
+# elif defined(__NetBSD__)
+#  define PROC_SELF_EXE "/proc/curproc/exe"
+# endif
+    ssize_t len = readlink(PROC_SELF_EXE, binary_filename, PATH_MAX);
+    if (len < 0) return 0;
+    binary_filename[len] = 0;
+    return len;
+}
+#elif defined(__FreeBSD__)
+static ssize_t
+main_exe_path(void)
+{
+    int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
+    size_t len = PATH_MAX;
+    int err = sysctl(mib, 4, binary_filename, &len, NULL, 0);
+    if (err) {
+	kprintf("Can't get the path of ruby");
+	return -1;
+    }
+    len--; /* sysctl sets strlen+1 */
+    return len;
+}
+#elif defined(HAVE_LIBPROC_H)
+static ssize_t
+main_exe_path(void)
+{
+    int len = proc_pidpath(getpid(), binary_filename, PATH_MAX);
+    if (len == 0) return 0;
+    binary_filename[len] = 0;
+    return len;
+}
+#else
+#undef HAVE_MAIN_EXE_PATH
+#endif
+
+static void
+print_line0(line_info_t *line, void *address)
+{
+    uintptr_t addr = (uintptr_t)address;
+    uintptr_t d = addr - line->saddr;
+    if (!address) {
+        /* inlined */
+        if (line->dirname && line->dirname[0]) {
+            kprintf("%s(%s) %s/%s:%d\n", line->path, line->sname, line->dirname, line->filename, line->line);
+        }
+        else {
+            kprintf("%s(%s) %s:%d\n", line->path, line->sname, line->filename, line->line);
+        }
+    }
+    else if (!line->path) {
+        kprintf("[0x%"PRIxPTR"]\n", addr);
+    }
+    else if (!line->saddr || !line->sname) {
+        kprintf("%s(0x%"PRIxPTR") [0x%"PRIxPTR"]\n", line->path, addr-line->base_addr, addr);
+    }
+    else if (line->line <= 0) {
+        kprintf("%s(%s+0x%"PRIxPTR") [0x%"PRIxPTR"]\n", line->path, line->sname,
+                d, addr);
+    }
+    else if (!line->filename) {
+        kprintf("%s(%s+0x%"PRIxPTR") [0x%"PRIxPTR"] ???:%d\n", line->path, line->sname,
+                d, addr, line->line);
+    }
+    else if (line->dirname && line->dirname[0]) {
+        kprintf("%s(%s+0x%"PRIxPTR") [0x%"PRIxPTR"] %s/%s:%d\n", line->path, line->sname,
+                d, addr, line->dirname, line->filename, line->line);
+    }
+    else {
+        kprintf("%s(%s+0x%"PRIxPTR") [0x%"PRIxPTR"] %s:%d\n", line->path, line->sname,
+                d, addr, line->filename, line->line);
+    }
+}
+
+static void
+print_line(line_info_t *line, void *address)
+{
+    print_line0(line, address);
+    if (line->next) {
+        print_line(line->next, NULL);
+    }
+}
+
+void
+rb_dump_backtrace_with_lines(int num_traces, void **traces)
+{
+    int i;
+    /* async-signal unsafe */
+    line_info_t *lines = (line_info_t *)calloc(num_traces, sizeof(line_info_t));
+    obj_info_t *obj = NULL;
+    /* 2 is NULL + main executable */
+    void **dladdr_fbases = (void **)calloc(num_traces+2, sizeof(void *));
+#ifdef HAVE_MAIN_EXE_PATH
+    char *main_path = NULL; /* used on printing backtrace */
+    ssize_t len;
+    if ((len = main_exe_path()) > 0) {
+	main_path = (char *)alloca(len + 1);
+	if (main_path) {
+	    uintptr_t addr;
+	    memcpy(main_path, binary_filename, len+1);
+	    append_obj(&obj);
+	    obj->path = main_path;
+	    addr = fill_lines(num_traces, traces, 1, &obj, lines, -1);
+	    if (addr != (uintptr_t)-1) {
+		dladdr_fbases[0] = (void *)addr;
+	    }
+	}
+    }
+#endif
+
+    /* fill source lines by reading dwarf */
+    for (i = 0; i < num_traces; i++) {
+	Dl_info info;
+	if (lines[i].line) continue;
+	if (dladdr(traces[i], &info)) {
+	    const char *path;
+	    void **p;
+
+	    /* skip symbols which is in already checked objects */
+	    /* if the binary is strip-ed, this may effect */
+	    for (p=dladdr_fbases; *p; p++) {
+		if (*p == info.dli_fbase) {
+		    lines[i].path = info.dli_fname;
+		    lines[i].sname = info.dli_sname;
+		    goto next_line;
+		}
+	    }
+	    *p = info.dli_fbase;
+
+	    append_obj(&obj);
+	    obj->base_addr = (uintptr_t)info.dli_fbase;
+	    path = info.dli_fname;
+	    obj->path = path;
+	    lines[i].path = path;
+            lines[i].sname = info.dli_sname;
+            lines[i].saddr = (uintptr_t)info.dli_saddr;
+	    strlcpy(binary_filename, path, PATH_MAX);
+	    if (fill_lines(num_traces, traces, 1, &obj, lines, i) == (uintptr_t)-1)
+		break;
+	}
+next_line:
+	continue;
+    }
+
+    /* output */
+    for (i = 0; i < num_traces; i++) {
+        print_line(&lines[i], traces[i]);
+
+	/* FreeBSD's backtrace may show _start and so on */
+	if (lines[i].sname && strcmp("main", lines[i].sname) == 0)
+	    break;
+    }
+
+    /* free */
+    while (obj) {
+	obj_info_t *o = obj;
+        for (i=0; i < DWARF_SECTION_COUNT; i++) {
+            struct dwarf_section *s = obj_dwarf_section_at(obj, i);
+            if (s->flags & SHF_COMPRESSED) {
+                free(s->ptr);
+            }
+        }
+	if (obj->mapped_size) {
+	    munmap(obj->mapped, obj->mapped_size);
+	}
+	obj = o->next;
+	free(o);
+    }
+    for (i = 0; i < num_traces; i++) {
+        line_info_t *line = lines[i].next;
+        while (line) {
+            line_info_t *l = line;
+            line = line->next;
+            free(l);
+        }
+    }
+    free(lines);
+    free(dladdr_fbases);
+}
+
+/* From FreeBSD's lib/libstand/printf.c */
+/*-
+ * Copyright (c) 1986, 1988, 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)subr_prf.c	8.3 (Berkeley) 1/21/94
+ */
+
+#include <stdarg.h>
+#define MAXNBUF (sizeof(intmax_t) * CHAR_BIT + 1)
+static inline int toupper(int c) { return ('A' <= c && c <= 'Z') ? (c&0x5f) : c; }
+#define    hex2ascii(hex)  (hex2ascii_data[hex])
+static const char hex2ascii_data[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+static inline int imax(int a, int b) { return (a > b ? a : b); }
+static int kvprintf(char const *fmt, void (*func)(int), void *arg, int radix, va_list ap);
+
+static void putce(int c)
+{
+    char s[1];
+    ssize_t ret;
+
+    s[0] = (char)c;
+    ret = write(2, s, 1);
+    (void)ret;
+}
+
+static int
+kprintf(const char *fmt, ...)
+{
+	va_list ap;
+	int retval;
+
+	va_start(ap, fmt);
+	retval = kvprintf(fmt, putce, NULL, 10, ap);
+	va_end(ap);
+	return retval;
+}
+
+/*
+ * Put a NUL-terminated ASCII number (base <= 36) in a buffer in reverse
+ * order; return an optional length and a pointer to the last character
+ * written in the buffer (i.e., the first character of the string).
+ * The buffer pointed to by `nbuf' must have length >= MAXNBUF.
+ */
+static char *
+ksprintn(char *nbuf, uintmax_t num, int base, int *lenp, int upper)
+{
+	char *p, c;
+
+	p = nbuf;
+	*p = '\0';
+	do {
+		c = hex2ascii(num % base);
+		*++p = upper ? toupper(c) : c;
+	} while (num /= base);
+	if (lenp)
+		*lenp = (int)(p - nbuf);
+	return (p);
+}
+
+/*
+ * Scaled down version of printf(3).
+ *
+ * Two additional formats:
+ *
+ * The format %b is supported to decode error registers.
+ * Its usage is:
+ *
+ *	printf("reg=%b\n", regval, "<base><arg>*");
+ *
+ * where <base> is the output base expressed as a control character, e.g.
+ * \10 gives octal; \20 gives hex.  Each arg is a sequence of characters,
+ * the first of which gives the bit number to be inspected (origin 1), and
+ * the next characters (up to a control character, i.e. a character <= 32),
+ * give the name of the register.  Thus:
+ *
+ *	kvprintf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
+ *
+ * would produce output:
+ *
+ *	reg=3<BITTWO,BITONE>
+ *
+ * XXX:  %D  -- Hexdump, takes pointer and separator string:
+ *		("%6D", ptr, ":")   -> XX:XX:XX:XX:XX:XX
+ *		("%*D", len, ptr, " " -> XX XX XX XX ...
+ */
+static int
+kvprintf(char const *fmt, void (*func)(int), void *arg, int radix, va_list ap)
+{
+#define PCHAR(c) {int cc=(c); if (func) (*func)(cc); else *d++ = cc; retval++; }
+	char nbuf[MAXNBUF];
+	char *d;
+	const char *p, *percent, *q;
+	unsigned char *up;
+	int ch, n;
+	uintmax_t num;
+	int base, lflag, qflag, tmp, width, ladjust, sharpflag, neg, sign, dot;
+	int cflag, hflag, jflag, tflag, zflag;
+	int dwidth, upper;
+	char padc;
+	int stop = 0, retval = 0;
+
+	num = 0;
+	if (!func)
+		d = (char *) arg;
+	else
+		d = NULL;
+
+	if (fmt == NULL)
+		fmt = "(fmt null)\n";
+
+	if (radix < 2 || radix > 36)
+		radix = 10;
+
+	for (;;) {
+		padc = ' ';
+		width = 0;
+		while ((ch = (unsigned char)*fmt++) != '%' || stop) {
+			if (ch == '\0')
+				return (retval);
+			PCHAR(ch);
+		}
+		percent = fmt - 1;
+		qflag = 0; lflag = 0; ladjust = 0; sharpflag = 0; neg = 0;
+		sign = 0; dot = 0; dwidth = 0; upper = 0;
+		cflag = 0; hflag = 0; jflag = 0; tflag = 0; zflag = 0;
+reswitch:	switch (ch = (unsigned char)*fmt++) {
+		case '.':
+			dot = 1;
+			goto reswitch;
+		case '#':
+			sharpflag = 1;
+			goto reswitch;
+		case '+':
+			sign = 1;
+			goto reswitch;
+		case '-':
+			ladjust = 1;
+			goto reswitch;
+		case '%':
+			PCHAR(ch);
+			break;
+		case '*':
+			if (!dot) {
+				width = va_arg(ap, int);
+				if (width < 0) {
+					ladjust = !ladjust;
+					width = -width;
+				}
+			} else {
+				dwidth = va_arg(ap, int);
+			}
+			goto reswitch;
+		case '0':
+			if (!dot) {
+				padc = '0';
+				goto reswitch;
+			}
+		case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+				for (n = 0;; ++fmt) {
+					n = n * 10 + ch - '0';
+					ch = *fmt;
+					if (ch < '0' || ch > '9')
+						break;
+				}
+			if (dot)
+				dwidth = n;
+			else
+				width = n;
+			goto reswitch;
+		case 'b':
+			num = (unsigned int)va_arg(ap, int);
+			p = va_arg(ap, char *);
+			for (q = ksprintn(nbuf, num, *p++, NULL, 0); *q;)
+				PCHAR(*q--);
+
+			if (num == 0)
+				break;
+
+			for (tmp = 0; *p;) {
+				n = *p++;
+				if (num & (1 << (n - 1))) {
+					PCHAR(tmp ? ',' : '<');
+					for (; (n = *p) > ' '; ++p)
+						PCHAR(n);
+					tmp = 1;
+				} else
+					for (; *p > ' '; ++p)
+						continue;
+			}
+			if (tmp)
+				PCHAR('>');
+			break;
+		case 'c':
+			PCHAR(va_arg(ap, int));
+			break;
+		case 'D':
+			up = va_arg(ap, unsigned char *);
+			p = va_arg(ap, char *);
+			if (!width)
+				width = 16;
+			while(width--) {
+				PCHAR(hex2ascii(*up >> 4));
+				PCHAR(hex2ascii(*up & 0x0f));
+				up++;
+				if (width)
+					for (q=p;*q;q++)
+						PCHAR(*q);
+			}
+			break;
+		case 'd':
+		case 'i':
+			base = 10;
+			sign = 1;
+			goto handle_sign;
+		case 'h':
+			if (hflag) {
+				hflag = 0;
+				cflag = 1;
+			} else
+				hflag = 1;
+			goto reswitch;
+		case 'j':
+			jflag = 1;
+			goto reswitch;
+		case 'l':
+			if (lflag) {
+				lflag = 0;
+				qflag = 1;
+			} else
+				lflag = 1;
+			goto reswitch;
+		case 'n':
+			if (jflag)
+				*(va_arg(ap, intmax_t *)) = retval;
+			else if (qflag)
+				*(va_arg(ap, int64_t *)) = retval;
+			else if (lflag)
+				*(va_arg(ap, long *)) = retval;
+			else if (zflag)
+				*(va_arg(ap, size_t *)) = retval;
+			else if (hflag)
+				*(va_arg(ap, short *)) = retval;
+			else if (cflag)
+				*(va_arg(ap, char *)) = retval;
+			else
+				*(va_arg(ap, int *)) = retval;
+			break;
+		case 'o':
+			base = 8;
+			goto handle_nosign;
+		case 'p':
+			base = 16;
+			sharpflag = (width == 0);
+			sign = 0;
+			num = (uintptr_t)va_arg(ap, void *);
+			goto number;
+		case 'q':
+			qflag = 1;
+			goto reswitch;
+		case 'r':
+			base = radix;
+			if (sign)
+				goto handle_sign;
+			goto handle_nosign;
+		case 's':
+			p = va_arg(ap, char *);
+			if (p == NULL)
+				p = "(null)";
+			if (!dot)
+				n = (int)strlen (p);
+			else
+				for (n = 0; n < dwidth && p[n]; n++)
+					continue;
+
+			width -= n;
+
+			if (!ladjust && width > 0)
+				while (width--)
+					PCHAR(padc);
+			while (n--)
+				PCHAR(*p++);
+			if (ladjust && width > 0)
+				while (width--)
+					PCHAR(padc);
+			break;
+		case 't':
+			tflag = 1;
+			goto reswitch;
+		case 'u':
+			base = 10;
+			goto handle_nosign;
+		case 'X':
+			upper = 1;
+		case 'x':
+			base = 16;
+			goto handle_nosign;
+		case 'y':
+			base = 16;
+			sign = 1;
+			goto handle_sign;
+		case 'z':
+			zflag = 1;
+			goto reswitch;
+handle_nosign:
+			sign = 0;
+			if (jflag)
+				num = va_arg(ap, uintmax_t);
+			else if (qflag)
+				num = va_arg(ap, uint64_t);
+			else if (tflag)
+				num = va_arg(ap, ptrdiff_t);
+			else if (lflag)
+				num = va_arg(ap, unsigned long);
+			else if (zflag)
+				num = va_arg(ap, size_t);
+			else if (hflag)
+				num = (unsigned short)va_arg(ap, int);
+			else if (cflag)
+				num = (unsigned char)va_arg(ap, int);
+			else
+				num = va_arg(ap, unsigned int);
+			goto number;
+handle_sign:
+			if (jflag)
+				num = va_arg(ap, intmax_t);
+			else if (qflag)
+				num = va_arg(ap, int64_t);
+			else if (tflag)
+				num = va_arg(ap, ptrdiff_t);
+			else if (lflag)
+				num = va_arg(ap, long);
+			else if (zflag)
+				num = va_arg(ap, ssize_t);
+			else if (hflag)
+				num = (short)va_arg(ap, int);
+			else if (cflag)
+				num = (char)va_arg(ap, int);
+			else
+				num = va_arg(ap, int);
+number:
+			if (sign && (intmax_t)num < 0) {
+				neg = 1;
+				num = -(intmax_t)num;
+			}
+			p = ksprintn(nbuf, num, base, &n, upper);
+			tmp = 0;
+			if (sharpflag && num != 0) {
+				if (base == 8)
+					tmp++;
+				else if (base == 16)
+					tmp += 2;
+			}
+			if (neg)
+				tmp++;
+
+			if (!ladjust && padc == '0')
+				dwidth = width - tmp;
+			width -= tmp + imax(dwidth, n);
+			dwidth -= n;
+			if (!ladjust)
+				while (width-- > 0)
+					PCHAR(' ');
+			if (neg)
+				PCHAR('-');
+			if (sharpflag && num != 0) {
+				if (base == 8) {
+					PCHAR('0');
+				} else if (base == 16) {
+					PCHAR('0');
+					PCHAR('x');
+				}
+			}
+			while (dwidth-- > 0)
+				PCHAR('0');
+
+			while (*p)
+				PCHAR(*p--);
+
+			if (ladjust)
+				while (width-- > 0)
+					PCHAR(' ');
+
+			break;
+		default:
+			while (percent < fmt)
+				PCHAR(*percent++);
+			/*
+			 * Since we ignore an formatting argument it is no
+			 * longer safe to obey the remaining formatting
+			 * arguments as the arguments will no longer match
+			 * the format specs.
+			 */
+			stop = 1;
+			break;
+		}
+	}
+#undef PCHAR
+}
+#else /* defined(USE_ELF) */
+#error not supported
+#endif
diff --git a/addr2line.h b/addr2line.h
new file mode 100644
index 0000000000..f09b665800
--- /dev/null
+++ b/addr2line.h
@@ -0,0 +1,20 @@
+#ifndef RUBY_ADDR2LINE_H
+#define RUBY_ADDR2LINE_H
+/**********************************************************************
+
+  addr2line.h -
+
+  $Author$
+
+  Copyright (C) 2010 Shinichiro Hamaji
+
+**********************************************************************/
+
+#if (defined(USE_ELF) || defined(HAVE_MACH_O_LOADER_H))
+
+void
+rb_dump_backtrace_with_lines(int num_traces, void **traces);
+
+#endif /* USE_ELF */
+
+#endif /* RUBY_ADDR2LINE_H */
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000000..5ad4972f19
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,96 @@
+---
+version: '{build}'
+init:
+  - git config --global user.name git
+  - git config --global user.email svn-admin@ruby-lang.org
+clone_depth: 10
+platform:
+  - x64
+environment:
+  ruby_version: "24-%Platform%"
+  zlib_version: "1.2.12"
+  matrix:
+    - build: vs
+      vs: 120
+      ssl: OpenSSL
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+      GEMS_FOR_TEST: ""
+    - build: vs
+      vs: 140
+      ssl: OpenSSL-v111
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      GEMS_FOR_TEST: ""
+  RELINE_TEST_ENCODING: "Windows-31J"
+  UPDATE_UNICODE: "UNICODE_FILES=. UNICODE_PROPERTY_FILES=. UNICODE_AUXILIARY_FILES=. UNICODE_EMOJI_FILES=."
+for:
+-
+  matrix:
+    only:
+      - build: vs
+  install:
+    - ver
+    - chcp
+    - SET BITS=%Platform:x86=32%
+    - SET BITS=%BITS:x=%
+    - SET OPENSSL_DIR=C:\%ssl%-Win%BITS%
+    - CALL SET vcvars=%%^VS%VS%COMNTOOLS^%%..\..\VC\vcvarsall.bat
+    - SET vcvars
+    - '"%vcvars%" %Platform:x64=amd64%'
+    - SET ruby_path=C:\Ruby%ruby_version:-x86=%
+    - SET PATH=\usr\local\bin;%ruby_path%\bin;%PATH%;C:\msys64\mingw64\bin;C:\msys64\usr\bin
+    - ruby --version
+    - 'cl'
+    - echo> Makefile srcdir=.
+    - echo>> Makefile MSC_VER=0
+    - echo>> Makefile RT=none
+    - echo>> Makefile RT_VER=0
+    - echo>> Makefile BUILTIN_ENCOBJS=nul
+    - type win32\Makefile.sub >> Makefile
+    - nmake %mflags% touch-unicode-files
+    - nmake %mflags% %UPDATE_UNICODE% incs
+    - nmake %mflags% extract-extlibs
+    - del Makefile
+    - mkdir \usr\local\bin
+    - mkdir \usr\local\include
+    - mkdir \usr\local\lib
+    - SET ZLIB_ZIP=.downloaded-cache\zlib%zlib_version:.=%.zip
+    - if not exist %ZLIB_ZIP% curl -fsSL -o %ZLIB_ZIP% --retry 10 https://zlib.net/zlib%zlib_version:.=%.zip
+    - 7z x -aos -o%APPVEYOR_BUILD_FOLDER%\ext\zlib %ZLIB_ZIP%
+    - for %%I in (%OPENSSL_DIR%\*.dll) do mklink /h \usr\local\bin\%%~nxI %%I
+    - attrib +r /s /d
+    - mkdir %Platform%-mswin_%vs%
+  build_script:
+    - cd %APPVEYOR_BUILD_FOLDER%
+    - cd %Platform%-mswin_%vs%
+    - ..\win32\configure.bat --without-ext=+,dbm,gdbm,readline --with-opt-dir=/usr/local --with-openssl-dir=%OPENSSL_DIR:\=/%
+    - nmake -l
+    - nmake install-nodoc
+    - \usr\bin\ruby -v -e "p :locale => Encoding.find('locale'), :filesystem => Encoding.find('filesystem')"
+    - if not "%GEMS_FOR_TEST%" == "" \usr\bin\gem install --no-document %GEMS_FOR_TEST%
+    - \usr\bin\ruby -ropenssl -e "puts 'Build    ' + OpenSSL::OPENSSL_VERSION, 'Runtime  ' + OpenSSL::OPENSSL_LIBRARY_VERSION"
+  test_script:
+    - set /a JOBS=%NUMBER_OF_PROCESSORS%
+    - nmake -l "TESTOPTS=-v -q" btest
+    - nmake -l "TESTOPTS=-v -q" test-basic
+    - nmake -l "TESTOPTS=-v --timeout-scale=3.0 --excludes=../test/excludes/_appveyor -j%JOBS% --exclude readline --exclude win32ole --exclude test_bignum --exclude test_syntax --exclude test_open-uri --exclude test_bundled_ca" test-all
+    # separately execute tests without -j which may crash worker with -j.
+    - nmake -l "TESTOPTS=-v --timeout-scale=3.0 --excludes=../test/excludes/_appveyor" test-all TESTS="../test/win32ole ../test/ruby/test_bignum.rb ../test/ruby/test_syntax.rb ../test/open-uri/test_open-uri.rb ../test/rubygems/test_bundled_ca.rb"
+    - nmake -l test-spec MSPECOPT=-fs # not using `-j` because sometimes `mspec -j` silently dies on Windows
+notifications:
+  - provider: Webhook
+    method: POST
+    url:
+      secure: CcFlJNDJ/a6to7u3Z4Fnz6dScEPNx7hTha2GkSRlV+1U6dqmxY/7uBcLXYb9gR3jfQk6w+2o/HrjNAyXMNGU/JOka3s2WRI4VKitzM+lQ08owvJIh0R7LxrGH0J2e81U # ruby-lang slack: ruby/simpler-alerts-bot
+    body: >-
+      {{^isPullRequest}}
+        {
+          "ci": "AppVeyor CI",
+          "env": "Visual Studio 2013 / 2015",
+          "url": "{{buildUrl}}",
+          "commit": "{{commitId}}",
+          "branch": "{{branch}}"
+        }
+      {{/isPullRequest}}
+    on_build_success: false
+    on_build_failure: true
+    on_build_status_changed: false
diff --git a/array.c b/array.c
index bc342b5867..b48a6431e7 100644
--- a/array.c
+++ b/array.c
@@ -11,65 +11,93 @@
 
 **********************************************************************/
 
-#include "ruby/ruby.h"
-#include "ruby/util.h"
+#include "debug_counter.h"
+#include "id.h"
+#include "internal.h"
+#include "internal/array.h"
+#include "internal/compar.h"
+#include "internal/enum.h"
+#include "internal/gc.h"
+#include "internal/hash.h"
+#include "internal/numeric.h"
+#include "internal/object.h"
+#include "internal/proc.h"
+#include "internal/rational.h"
+#include "internal/vm.h"
+#include "probes.h"
+#include "ruby/encoding.h"
 #include "ruby/st.h"
+#include "ruby/util.h"
+#include "transient_heap.h"
+#include "builtin.h"
 
-#ifndef ARRAY_DEBUG
+#if !ARRAY_DEBUG
+# undef NDEBUG
 # define NDEBUG
 #endif
-#include <assert.h>
+#include "ruby_assert.h"
 
 VALUE rb_cArray;
 
-static ID id_cmp;
+/* for OPTIMIZED_CMP: */
+#define id_cmp idCmp
 
 #define ARY_DEFAULT_SIZE 16
-#define ARY_MAX_SIZE (LONG_MAX / sizeof(VALUE))
+#define ARY_MAX_SIZE (LONG_MAX / (int)sizeof(VALUE))
+#define SMALL_ARRAY_LEN 16
 
-void
-rb_mem_clear(register VALUE *mem, register long size)
+RBIMPL_ATTR_MAYBE_UNUSED()
+static int
+should_be_T_ARRAY(VALUE ary)
 {
-    while (size--) {
-	*mem++ = Qnil;
-    }
+    return RB_TYPE_P(ary, T_ARRAY);
 }
 
-static inline void
-memfill(register VALUE *mem, register long size, register VALUE val)
+RBIMPL_ATTR_MAYBE_UNUSED()
+static int
+should_not_be_shared_and_embedded(VALUE ary)
 {
-    while (size--) {
-	*mem++ = val;
-    }
+    return !FL_TEST((ary), ELTS_SHARED) || !FL_TEST((ary), RARRAY_EMBED_FLAG);
 }
 
-# define ARY_SHARED_P(ary) \
-    (assert(!FL_TEST(ary, ELTS_SHARED) || !FL_TEST(ary, RARRAY_EMBED_FLAG)), \
-     FL_TEST(ary,ELTS_SHARED))
-# define ARY_EMBED_P(ary) \
-    (assert(!FL_TEST(ary, ELTS_SHARED) || !FL_TEST(ary, RARRAY_EMBED_FLAG)), \
-     FL_TEST(ary, RARRAY_EMBED_FLAG))
+#define ARY_SHARED_P(ary) \
+  (assert(should_be_T_ARRAY((VALUE)(ary))), \
+   assert(should_not_be_shared_and_embedded((VALUE)ary)), \
+   FL_TEST_RAW((ary),ELTS_SHARED)!=0)
+
+#define ARY_EMBED_P(ary) \
+  (assert(should_be_T_ARRAY((VALUE)(ary))), \
+   assert(should_not_be_shared_and_embedded((VALUE)ary)), \
+   FL_TEST_RAW((ary), RARRAY_EMBED_FLAG) != 0)
 
 #define ARY_HEAP_PTR(a) (assert(!ARY_EMBED_P(a)), RARRAY(a)->as.heap.ptr)
 #define ARY_HEAP_LEN(a) (assert(!ARY_EMBED_P(a)), RARRAY(a)->as.heap.len)
+#define ARY_HEAP_CAPA(a) (assert(!ARY_EMBED_P(a)), assert(!ARY_SHARED_ROOT_P(a)), \
+                          RARRAY(a)->as.heap.aux.capa)
+
 #define ARY_EMBED_PTR(a) (assert(ARY_EMBED_P(a)), RARRAY(a)->as.ary)
 #define ARY_EMBED_LEN(a) \
     (assert(ARY_EMBED_P(a)), \
      (long)((RBASIC(a)->flags >> RARRAY_EMBED_LEN_SHIFT) & \
 	 (RARRAY_EMBED_LEN_MASK >> RARRAY_EMBED_LEN_SHIFT)))
+#define ARY_HEAP_SIZE(a) (assert(!ARY_EMBED_P(a)), assert(ARY_OWNS_HEAP_P(a)), ARY_CAPA(a) * sizeof(VALUE))
+
+#define ARY_OWNS_HEAP_P(a) (assert(should_be_T_ARRAY((VALUE)(a))), \
+                            !FL_TEST_RAW((a), ELTS_SHARED|RARRAY_EMBED_FLAG))
 
-#define ARY_OWNS_HEAP_P(a) (!FL_TEST(a, ELTS_SHARED|RARRAY_EMBED_FLAG))
 #define FL_SET_EMBED(a) do { \
     assert(!ARY_SHARED_P(a)); \
-    assert(!OBJ_FROZEN(a)); \
-    FL_SET(a, RARRAY_EMBED_FLAG); \
+    FL_SET((a), RARRAY_EMBED_FLAG); \
+    RARY_TRANSIENT_UNSET(a); \
+    ary_verify(a); \
 } while (0)
-#define FL_UNSET_EMBED(ary) FL_UNSET(ary, RARRAY_EMBED_FLAG|RARRAY_EMBED_LEN_MASK)
+
+#define FL_UNSET_EMBED(ary) FL_UNSET((ary), RARRAY_EMBED_FLAG|RARRAY_EMBED_LEN_MASK)
 #define FL_SET_SHARED(ary) do { \
     assert(!ARY_EMBED_P(ary)); \
-    FL_SET(ary, ELTS_SHARED); \
+    FL_SET((ary), ELTS_SHARED); \
 } while (0)
-#define FL_UNSET_SHARED(ary) FL_UNSET(ary, ELTS_SHARED)
+#define FL_UNSET_SHARED(ary) FL_UNSET((ary), ELTS_SHARED)
 
 #define ARY_SET_PTR(ary, p) do { \
     assert(!ARY_EMBED_P(ary)); \
@@ -77,7 +105,7 @@ memfill(register VALUE *mem, register long size, register VALUE val)
     RARRAY(ary)->as.heap.ptr = (p); \
 } while (0)
 #define ARY_SET_EMBED_LEN(ary, n) do { \
-    long tmp_n = n; \
+    long tmp_n = (n); \
     assert(ARY_EMBED_P(ary)); \
     assert(!OBJ_FROZEN(ary)); \
     RBASIC(ary)->flags &= ~RARRAY_EMBED_LEN_MASK; \
@@ -85,34 +113,34 @@ memfill(register VALUE *mem, register long size, register VALUE val)
 } while (0)
 #define ARY_SET_HEAP_LEN(ary, n) do { \
     assert(!ARY_EMBED_P(ary)); \
-    RARRAY(ary)->as.heap.len = n; \
+    RARRAY(ary)->as.heap.len = (n); \
 } while (0)
 #define ARY_SET_LEN(ary, n) do { \
     if (ARY_EMBED_P(ary)) { \
-        ARY_SET_EMBED_LEN(ary, n); \
+        ARY_SET_EMBED_LEN((ary), (n)); \
     } \
     else { \
-        ARY_SET_HEAP_LEN(ary, n); \
+        ARY_SET_HEAP_LEN((ary), (n)); \
     } \
-    assert(RARRAY_LEN(ary) == n); \
-} while (0) 
+    assert(RARRAY_LEN(ary) == (n)); \
+} while (0)
 #define ARY_INCREASE_PTR(ary, n) do  { \
     assert(!ARY_EMBED_P(ary)); \
     assert(!OBJ_FROZEN(ary)); \
-    RARRAY(ary)->as.heap.ptr += n; \
+    RARRAY(ary)->as.heap.ptr += (n); \
 } while (0)
 #define ARY_INCREASE_LEN(ary, n) do  { \
     assert(!OBJ_FROZEN(ary)); \
     if (ARY_EMBED_P(ary)) { \
-        ARY_SET_EMBED_LEN(ary, RARRAY_LEN(ary)+n); \
+        ARY_SET_EMBED_LEN((ary), RARRAY_LEN(ary)+(n)); \
     } \
     else { \
-        RARRAY(ary)->as.heap.len += n; \
+        RARRAY(ary)->as.heap.len += (n); \
     } \
 } while (0)
 
 #define ARY_CAPA(ary) (ARY_EMBED_P(ary) ? RARRAY_EMBED_LEN_MAX : \
-		       ARY_SHARED_ROOT_P(ary) ? RARRAY_LEN(ary) : RARRAY(ary)->as.heap.aux.capa)
+                       ARY_SHARED_ROOT_P(ary) ? RARRAY_LEN(ary) : ARY_HEAP_CAPA(ary))
 #define ARY_SET_CAPA(ary, n) do { \
     assert(!ARY_EMBED_P(ary)); \
     assert(!ARY_SHARED_P(ary)); \
@@ -120,69 +148,373 @@ memfill(register VALUE *mem, register long size, register VALUE val)
     RARRAY(ary)->as.heap.aux.capa = (n); \
 } while (0)
 
-#define ARY_SHARED(ary) (assert(ARY_SHARED_P(ary)), RARRAY(ary)->as.heap.aux.shared)
+#define ARY_SHARED_ROOT(ary) (assert(ARY_SHARED_P(ary)), RARRAY(ary)->as.heap.aux.shared_root)
 #define ARY_SET_SHARED(ary, value) do { \
-    assert(!ARY_EMBED_P(ary)); \
-    assert(ARY_SHARED_P(ary)); \
-    assert(ARY_SHARED_ROOT_P(value)); \
-    RARRAY(ary)->as.heap.aux.shared = (value); \
+    const VALUE _ary_ = (ary); \
+    const VALUE _value_ = (value); \
+    assert(!ARY_EMBED_P(_ary_)); \
+    assert(ARY_SHARED_P(_ary_)); \
+    assert(ARY_SHARED_ROOT_P(_value_)); \
+    RB_OBJ_WRITE(_ary_, &RARRAY(_ary_)->as.heap.aux.shared_root, _value_); \
 } while (0)
 #define RARRAY_SHARED_ROOT_FLAG FL_USER5
-#define ARY_SHARED_ROOT_P(ary) (FL_TEST(ary, RARRAY_SHARED_ROOT_FLAG))
-#define ARY_SHARED_NUM(ary) \
+#define ARY_SHARED_ROOT_P(ary) (assert(should_be_T_ARRAY((VALUE)(ary))), \
+                                FL_TEST_RAW((ary), RARRAY_SHARED_ROOT_FLAG))
+#define ARY_SHARED_ROOT_REFCNT(ary) \
     (assert(ARY_SHARED_ROOT_P(ary)), RARRAY(ary)->as.heap.aux.capa)
-#define ARY_SET_SHARED_NUM(ary, value) do { \
+#define ARY_SHARED_ROOT_OCCUPIED(ary) (ARY_SHARED_ROOT_REFCNT(ary) == 1)
+#define ARY_SET_SHARED_ROOT_REFCNT(ary, value) do { \
     assert(ARY_SHARED_ROOT_P(ary)); \
     RARRAY(ary)->as.heap.aux.capa = (value); \
 } while (0)
 #define FL_SET_SHARED_ROOT(ary) do { \
     assert(!ARY_EMBED_P(ary)); \
-    FL_SET(ary, RARRAY_SHARED_ROOT_FLAG); \
+    assert(!RARRAY_TRANSIENT_P(ary)); \
+    FL_SET((ary), RARRAY_SHARED_ROOT_FLAG); \
 } while (0)
 
+static inline void
+ARY_SET(VALUE a, long i, VALUE v)
+{
+    assert(!ARY_SHARED_P(a));
+    assert(!OBJ_FROZEN(a));
+
+    RARRAY_ASET(a, i, v);
+}
+#undef RARRAY_ASET
+
+
+#if ARRAY_DEBUG
+#define ary_verify(ary) ary_verify_(ary, __FILE__, __LINE__)
+
+static VALUE
+ary_verify_(VALUE ary, const char *file, int line)
+{
+    assert(RB_TYPE_P(ary, T_ARRAY));
+
+    if (FL_TEST(ary, ELTS_SHARED)) {
+        VALUE root = RARRAY(ary)->as.heap.aux.shared_root;
+        const VALUE *ptr = ARY_HEAP_PTR(ary);
+        const VALUE *root_ptr = RARRAY_CONST_PTR_TRANSIENT(root);
+        long len = ARY_HEAP_LEN(ary), root_len = RARRAY_LEN(root);
+        assert(FL_TEST(root, RARRAY_SHARED_ROOT_FLAG));
+        assert(root_ptr <= ptr && ptr + len <= root_ptr + root_len);
+        ary_verify(root);
+    }
+    else if (ARY_EMBED_P(ary)) {
+        assert(!RARRAY_TRANSIENT_P(ary));
+        assert(!ARY_SHARED_P(ary));
+        assert(RARRAY_LEN(ary) <= RARRAY_EMBED_LEN_MAX);
+    }
+    else {
+#if 1
+        const VALUE *ptr = RARRAY_CONST_PTR_TRANSIENT(ary);
+        long i, len = RARRAY_LEN(ary);
+        volatile VALUE v;
+        if (len > 1) len = 1; /* check only HEAD */
+        for (i=0; i<len; i++) {
+            v = ptr[i]; /* access check */
+        }
+        v = v;
+#endif
+    }
+
+#if USE_TRANSIENT_HEAP
+    if (RARRAY_TRANSIENT_P(ary)) {
+        assert(rb_transient_heap_managed_ptr_p(RARRAY_CONST_PTR_TRANSIENT(ary)));
+    }
+#endif
+
+    rb_transient_heap_verify();
+
+    return ary;
+}
+
+void
+rb_ary_verify(VALUE ary)
+{
+    ary_verify(ary);
+}
+#else
+#define ary_verify(ary) ((void)0)
+#endif
+
+VALUE *
+rb_ary_ptr_use_start(VALUE ary)
+{
+#if ARRAY_DEBUG
+    FL_SET_RAW(ary, RARRAY_PTR_IN_USE_FLAG);
+#endif
+    return (VALUE *)RARRAY_CONST_PTR_TRANSIENT(ary);
+}
+
+void
+rb_ary_ptr_use_end(VALUE ary)
+{
+#if ARRAY_DEBUG
+    FL_UNSET_RAW(ary, RARRAY_PTR_IN_USE_FLAG);
+#endif
+}
+
+void
+rb_mem_clear(VALUE *mem, long size)
+{
+    while (size--) {
+	*mem++ = Qnil;
+    }
+}
+
+static void
+ary_mem_clear(VALUE ary, long beg, long size)
+{
+    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+	rb_mem_clear(ptr + beg, size);
+    });
+}
+
+static inline void
+memfill(register VALUE *mem, register long size, register VALUE val)
+{
+    while (size--) {
+	*mem++ = val;
+    }
+}
+
+static void
+ary_memfill(VALUE ary, long beg, long size, VALUE val)
+{
+    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+	memfill(ptr + beg, size, val);
+	RB_OBJ_WRITTEN(ary, Qundef, val);
+    });
+}
+
+static void
+ary_memcpy0(VALUE ary, long beg, long argc, const VALUE *argv, VALUE buff_owner_ary)
+{
+    assert(!ARY_SHARED_P(buff_owner_ary));
+
+    if (argc > (int)(128/sizeof(VALUE)) /* is magic number (cache line size) */) {
+        rb_gc_writebarrier_remember(buff_owner_ary);
+        RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+            MEMCPY(ptr+beg, argv, VALUE, argc);
+        });
+    }
+    else {
+        int i;
+        RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+            for (i=0; i<argc; i++) {
+                RB_OBJ_WRITE(buff_owner_ary, &ptr[i+beg], argv[i]);
+            }
+        });
+    }
+}
+
+static void
+ary_memcpy(VALUE ary, long beg, long argc, const VALUE *argv)
+{
+    ary_memcpy0(ary, beg, argc, argv, ary);
+}
+
+static VALUE *
+ary_heap_alloc(VALUE ary, size_t capa)
+{
+    VALUE *ptr = rb_transient_heap_alloc(ary, sizeof(VALUE) * capa);
+
+    if (ptr != NULL) {
+        RARY_TRANSIENT_SET(ary);
+    }
+    else {
+        RARY_TRANSIENT_UNSET(ary);
+        ptr = ALLOC_N(VALUE, capa);
+    }
+
+    return ptr;
+}
+
+static void
+ary_heap_free_ptr(VALUE ary, const VALUE *ptr, long size)
+{
+    if (RARRAY_TRANSIENT_P(ary)) {
+        /* ignore it */
+    }
+    else {
+        ruby_sized_xfree((void *)ptr, size);
+    }
+}
+
+static void
+ary_heap_free(VALUE ary)
+{
+    if (RARRAY_TRANSIENT_P(ary)) {
+        RARY_TRANSIENT_UNSET(ary);
+    }
+    else {
+        ary_heap_free_ptr(ary, ARY_HEAP_PTR(ary), ARY_HEAP_SIZE(ary));
+    }
+}
+
+static void
+ary_heap_realloc(VALUE ary, size_t new_capa)
+{
+    size_t old_capa = ARY_HEAP_CAPA(ary);
+
+    if (RARRAY_TRANSIENT_P(ary)) {
+        if (new_capa <= old_capa) {
+            /* do nothing */
+        }
+        else {
+            VALUE *new_ptr = rb_transient_heap_alloc(ary, sizeof(VALUE) * new_capa);
+
+            if (new_ptr == NULL) {
+                new_ptr = ALLOC_N(VALUE, new_capa);
+                RARY_TRANSIENT_UNSET(ary);
+            }
+
+            MEMCPY(new_ptr, ARY_HEAP_PTR(ary), VALUE, old_capa);
+            ARY_SET_PTR(ary, new_ptr);
+        }
+    }
+    else {
+        SIZED_REALLOC_N(RARRAY(ary)->as.heap.ptr, VALUE, new_capa, old_capa);
+    }
+    ary_verify(ary);
+}
+
+#if USE_TRANSIENT_HEAP
+static inline void
+rb_ary_transient_heap_evacuate_(VALUE ary, int transient, int promote)
+{
+    if (transient) {
+        VALUE *new_ptr;
+        const VALUE *old_ptr = ARY_HEAP_PTR(ary);
+        long capa = ARY_HEAP_CAPA(ary);
+        long len  = ARY_HEAP_LEN(ary);
+
+        if (ARY_SHARED_ROOT_P(ary)) {
+            capa = len;
+        }
+
+        assert(ARY_OWNS_HEAP_P(ary));
+        assert(RARRAY_TRANSIENT_P(ary));
+        assert(!ARY_PTR_USING_P(ary));
+
+        if (promote) {
+            new_ptr = ALLOC_N(VALUE, capa);
+            RARY_TRANSIENT_UNSET(ary);
+        }
+        else {
+            new_ptr = ary_heap_alloc(ary, capa);
+        }
+
+        MEMCPY(new_ptr, old_ptr, VALUE, capa);
+        /* do not use ARY_SET_PTR() because they assert !frozen */
+        RARRAY(ary)->as.heap.ptr = new_ptr;
+    }
+
+    ary_verify(ary);
+}
+
+void
+rb_ary_transient_heap_evacuate(VALUE ary, int promote)
+{
+    rb_ary_transient_heap_evacuate_(ary, RARRAY_TRANSIENT_P(ary), promote);
+}
+
+void
+rb_ary_detransient(VALUE ary)
+{
+    assert(RARRAY_TRANSIENT_P(ary));
+    rb_ary_transient_heap_evacuate_(ary, TRUE, TRUE);
+}
+#else
+void
+rb_ary_detransient(VALUE ary)
+{
+    /* do nothing */
+}
+#endif
+
 static void
 ary_resize_capa(VALUE ary, long capacity)
 {
     assert(RARRAY_LEN(ary) <= capacity);
-    assert(!OBJ_FROZEN(ary)); 
-    assert(!ARY_SHARED_P(ary)); 
+    assert(!OBJ_FROZEN(ary));
+    assert(!ARY_SHARED_P(ary));
+
     if (capacity > RARRAY_EMBED_LEN_MAX) {
         if (ARY_EMBED_P(ary)) {
-            long len = ARY_EMBED_LEN(ary); 
-            VALUE *ptr = ALLOC_N(VALUE, (capacity));
-            MEMCPY(ptr, ARY_EMBED_PTR(ary), VALUE, len); 
-            FL_UNSET_EMBED(ary); 
-            ARY_SET_PTR(ary, ptr); 
-            ARY_SET_HEAP_LEN(ary, len); 
+            long len = ARY_EMBED_LEN(ary);
+            VALUE *ptr = ary_heap_alloc(ary, capacity);
+
+            MEMCPY(ptr, ARY_EMBED_PTR(ary), VALUE, len);
+            FL_UNSET_EMBED(ary);
+            ARY_SET_PTR(ary, ptr);
+            ARY_SET_HEAP_LEN(ary, len);
         }
-        else { 
-            REALLOC_N(RARRAY(ary)->as.heap.ptr, VALUE, (capacity));
+        else {
+            ary_heap_realloc(ary, capacity);
         }
-        ARY_SET_CAPA(ary, (capacity)); 
+        ARY_SET_CAPA(ary, capacity);
     }
     else {
         if (!ARY_EMBED_P(ary)) {
-            long len = RARRAY_LEN(ary); 
-            VALUE *ptr = RARRAY_PTR(ary); 
-            MEMCPY(RARRAY(ary)->as.ary, ptr, VALUE, len); 
-            FL_SET_EMBED(ary); 
-            ARY_SET_LEN(ary, len); 
-            xfree(ptr); 
+            long len = ARY_HEAP_LEN(ary);
+            long old_capa = ARY_HEAP_CAPA(ary);
+            const VALUE *ptr = ARY_HEAP_PTR(ary);
+
+            if (len > capacity) len = capacity;
+            MEMCPY((VALUE *)RARRAY(ary)->as.ary, ptr, VALUE, len);
+            ary_heap_free_ptr(ary, ptr, old_capa);
+
+            FL_SET_EMBED(ary);
+            ARY_SET_LEN(ary, len);
         }
     }
+
+    ary_verify(ary);
+}
+
+static inline void
+ary_shrink_capa(VALUE ary)
+{
+    long capacity = ARY_HEAP_LEN(ary);
+    long old_capa = ARY_HEAP_CAPA(ary);
+    assert(!ARY_SHARED_P(ary));
+    assert(old_capa >= capacity);
+    if (old_capa > capacity) ary_heap_realloc(ary, capacity);
+
+    ary_verify(ary);
+}
+
+static void
+ary_double_capa(VALUE ary, long min)
+{
+    long new_capa = ARY_CAPA(ary) / 2;
+
+    if (new_capa < ARY_DEFAULT_SIZE) {
+	new_capa = ARY_DEFAULT_SIZE;
+    }
+    if (new_capa >= ARY_MAX_SIZE - min) {
+	new_capa = (ARY_MAX_SIZE - min) / 2;
+    }
+    new_capa += min;
+    ary_resize_capa(ary, new_capa);
+
+    ary_verify(ary);
 }
 
 static void
-rb_ary_decrement_share(VALUE shared)
+rb_ary_decrement_share(VALUE shared_root)
 {
-    if (shared) {
-	int num = ARY_SHARED_NUM(shared) - 1;
+    if (shared_root) {
+        long num = ARY_SHARED_ROOT_REFCNT(shared_root) - 1;
 	if (num == 0) {
-	    rb_ary_free(shared);
-	    rb_gc_force_recycle(shared);
+            rb_ary_free(shared_root);
+            rb_gc_force_recycle(shared_root);
 	}
 	else if (num > 0) {
-	    ARY_SET_SHARED_NUM(shared, num);
+            ARY_SET_SHARED_ROOT_REFCNT(shared_root, num);
 	}
     }
 }
@@ -190,116 +522,217 @@ rb_ary_decrement_share(VALUE shared)
 static void
 rb_ary_unshare(VALUE ary)
 {
-    VALUE shared = RARRAY(ary)->as.heap.aux.shared;
-    rb_ary_decrement_share(shared);
+    VALUE shared_root = RARRAY(ary)->as.heap.aux.shared_root;
+    rb_ary_decrement_share(shared_root);
     FL_UNSET_SHARED(ary);
 }
 
 static inline void
-rb_ary_unshare_safe(VALUE ary) {
+rb_ary_unshare_safe(VALUE ary)
+{
     if (ARY_SHARED_P(ary) && !ARY_EMBED_P(ary)) {
 	rb_ary_unshare(ary);
     }
 }
 
 static VALUE
-rb_ary_increment_share(VALUE shared) {
-    int num = ARY_SHARED_NUM(shared);
+rb_ary_increment_share(VALUE shared_root)
+{
+    long num = ARY_SHARED_ROOT_REFCNT(shared_root);
     if (num >= 0) {
-	ARY_SET_SHARED_NUM(shared, num + 1);
+        ARY_SET_SHARED_ROOT_REFCNT(shared_root, num + 1);
     }
-    return shared;
+    return shared_root;
 }
 
 static void
-rb_ary_set_shared(VALUE ary, VALUE shared)
+rb_ary_set_shared(VALUE ary, VALUE shared_root)
 {
-    rb_ary_increment_share(shared);
+    rb_ary_increment_share(shared_root);
     FL_SET_SHARED(ary);
-    ARY_SET_SHARED(ary, shared);
+    RB_DEBUG_COUNTER_INC(obj_ary_shared_create);
+    ARY_SET_SHARED(ary, shared_root);
 }
 
 static inline void
 rb_ary_modify_check(VALUE ary)
 {
-    if (OBJ_FROZEN(ary)) rb_error_frozen("array");
-    if (!OBJ_UNTRUSTED(ary) && rb_safe_level() >= 4)
-	rb_raise(rb_eSecurityError, "Insecure: can't modify array");
+    rb_check_frozen(ary);
+    ary_verify(ary);
 }
 
-static void
-rb_ary_modify(VALUE ary)
+void
+rb_ary_cancel_sharing(VALUE ary)
 {
-    rb_ary_modify_check(ary);
     if (ARY_SHARED_P(ary)) {
-        long len = RARRAY_LEN(ary);
+        long shared_len, len = RARRAY_LEN(ary);
+        VALUE shared_root = ARY_SHARED_ROOT(ary);
+
+        ary_verify(shared_root);
+
         if (len <= RARRAY_EMBED_LEN_MAX) {
-            VALUE *ptr = ARY_HEAP_PTR(ary);
-            VALUE shared = ARY_SHARED(ary);
+            const VALUE *ptr = ARY_HEAP_PTR(ary);
             FL_UNSET_SHARED(ary);
             FL_SET_EMBED(ary);
-            MEMCPY(ARY_EMBED_PTR(ary), ptr, VALUE, len);
-            rb_ary_decrement_share(shared);
+            MEMCPY((VALUE *)ARY_EMBED_PTR(ary), ptr, VALUE, len);
+            rb_ary_decrement_share(shared_root);
             ARY_SET_EMBED_LEN(ary, len);
         }
+        else if (ARY_SHARED_ROOT_OCCUPIED(shared_root) && len > ((shared_len = RARRAY_LEN(shared_root))>>1)) {
+            long shift = RARRAY_CONST_PTR_TRANSIENT(ary) - RARRAY_CONST_PTR_TRANSIENT(shared_root);
+            FL_UNSET_SHARED(ary);
+            ARY_SET_PTR(ary, RARRAY_CONST_PTR_TRANSIENT(shared_root));
+            ARY_SET_CAPA(ary, shared_len);
+            RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+                MEMMOVE(ptr, ptr+shift, VALUE, len);
+            });
+            FL_SET_EMBED(shared_root);
+            rb_ary_decrement_share(shared_root);
+        }
         else {
-            VALUE *ptr = ALLOC_N(VALUE, len);
-            MEMCPY(ptr, RARRAY_PTR(ary), VALUE, len);
+            VALUE *ptr = ary_heap_alloc(ary, len);
+            MEMCPY(ptr, ARY_HEAP_PTR(ary), VALUE, len);
             rb_ary_unshare(ary);
             ARY_SET_CAPA(ary, len);
             ARY_SET_PTR(ary, ptr);
         }
+
+        rb_gc_writebarrier_remember(ary);
     }
+    ary_verify(ary);
 }
 
-VALUE
-rb_ary_freeze(VALUE ary)
+void
+rb_ary_modify(VALUE ary)
 {
-    return rb_obj_freeze(ary);
+    rb_ary_modify_check(ary);
+    rb_ary_cancel_sharing(ary);
+}
+
+static VALUE
+ary_ensure_room_for_push(VALUE ary, long add_len)
+{
+    long old_len = RARRAY_LEN(ary);
+    long new_len = old_len + add_len;
+    long capa;
+
+    if (old_len > ARY_MAX_SIZE - add_len) {
+	rb_raise(rb_eIndexError, "index %ld too big", new_len);
+    }
+    if (ARY_SHARED_P(ary)) {
+	if (new_len > RARRAY_EMBED_LEN_MAX) {
+            VALUE shared_root = ARY_SHARED_ROOT(ary);
+            if (ARY_SHARED_ROOT_OCCUPIED(shared_root)) {
+                if (ARY_HEAP_PTR(ary) - RARRAY_CONST_PTR_TRANSIENT(shared_root) + new_len <= RARRAY_LEN(shared_root)) {
+		    rb_ary_modify_check(ary);
+
+                    ary_verify(ary);
+                    ary_verify(shared_root);
+                    return shared_root;
+		}
+		else {
+		    /* if array is shared, then it is likely it participate in push/shift pattern */
+		    rb_ary_modify(ary);
+		    capa = ARY_CAPA(ary);
+		    if (new_len > capa - (capa >> 6)) {
+			ary_double_capa(ary, new_len);
+		    }
+                    ary_verify(ary);
+		    return ary;
+		}
+	    }
+	}
+        ary_verify(ary);
+        rb_ary_modify(ary);
+    }
+    else {
+	rb_ary_modify_check(ary);
+    }
+    capa = ARY_CAPA(ary);
+    if (new_len > capa) {
+	ary_double_capa(ary, new_len);
+    }
+
+    ary_verify(ary);
+    return ary;
 }
 
 /*
  *  call-seq:
- *     array.frozen?  -> true or false
+ *    array.freeze -> self
  *
- *  Return <code>true</code> if this array is frozen (or temporarily frozen
- *  while being sorted).
+ *  Freezes +self+; returns +self+:
+ *    a = []
+ *    a.frozen? # => false
+ *    a.freeze
+ *    a.frozen? # => true
+ *
+ *  An attempt to modify a frozen \Array raises FrozenError.
  */
 
-static VALUE
-rb_ary_frozen_p(VALUE ary)
+VALUE
+rb_ary_freeze(VALUE ary)
+{
+    return rb_obj_freeze(ary);
+}
+
+/* This can be used to take a snapshot of an array (with
+   e.g. rb_ary_replace) and check later whether the array has been
+   modified from the snapshot.  The snapshot is cheap, though if
+   something does modify the array it will pay the cost of copying
+   it.  If Array#pop or Array#shift has been called, the array will
+   be still shared with the snapshot, but the array length will
+   differ. */
+VALUE
+rb_ary_shared_with_p(VALUE ary1, VALUE ary2)
 {
-    if (OBJ_FROZEN(ary)) return Qtrue;
+    if (!ARY_EMBED_P(ary1) && ARY_SHARED_P(ary1) &&
+	!ARY_EMBED_P(ary2) && ARY_SHARED_P(ary2) &&
+        RARRAY(ary1)->as.heap.aux.shared_root == RARRAY(ary2)->as.heap.aux.shared_root &&
+	RARRAY(ary1)->as.heap.len == RARRAY(ary2)->as.heap.len) {
+	return Qtrue;
+    }
     return Qfalse;
 }
 
 static VALUE
 ary_alloc(VALUE klass)
 {
-    NEWOBJ(ary, struct RArray);
-    OBJSETUP(ary, klass, T_ARRAY);
-    FL_SET_EMBED((VALUE)ary);
-    ARY_SET_EMBED_LEN((VALUE)ary, 0);
-
+    NEWOBJ_OF(ary, struct RArray, klass, T_ARRAY | RARRAY_EMBED_FLAG | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0));
+    /* Created array is:
+     *   FL_SET_EMBED((VALUE)ary);
+     *   ARY_SET_EMBED_LEN((VALUE)ary, 0);
+     */
     return (VALUE)ary;
 }
 
 static VALUE
-ary_new(VALUE klass, long len)
+empty_ary_alloc(VALUE klass)
 {
-    VALUE ary;
+    RUBY_DTRACE_CREATE_HOOK(ARRAY, 0);
+    return ary_alloc(klass);
+}
 
-    if (len < 0) {
+static VALUE
+ary_new(VALUE klass, long capa)
+{
+    VALUE ary,*ptr;
+
+    if (capa < 0) {
 	rb_raise(rb_eArgError, "negative array size (or size too big)");
     }
-    if (len > ARY_MAX_SIZE) {
+    if (capa > ARY_MAX_SIZE) {
 	rb_raise(rb_eArgError, "array size too big");
     }
+
+    RUBY_DTRACE_CREATE_HOOK(ARRAY, capa);
+
     ary = ary_alloc(klass);
-    if (len > RARRAY_EMBED_LEN_MAX) {
+    if (capa > RARRAY_EMBED_LEN_MAX) {
+        ptr = ary_heap_alloc(ary, capa);
         FL_UNSET_EMBED(ary);
-        ARY_SET_PTR(ary, ALLOC_N(VALUE, len));
-        ARY_SET_CAPA(ary, len);
+        ARY_SET_PTR(ary, ptr);
+        ARY_SET_CAPA(ary, capa);
         ARY_SET_HEAP_LEN(ary, 0);
     }
 
@@ -307,22 +740,19 @@ ary_new(VALUE klass, long len)
 }
 
 VALUE
-rb_ary_new2(long len)
+rb_ary_new_capa(long capa)
 {
-    return ary_new(rb_cArray, len);
+    return ary_new(rb_cArray, capa);
 }
 
-
 VALUE
 rb_ary_new(void)
 {
     return rb_ary_new2(RARRAY_EMBED_LEN_MAX);
 }
 
-#include <stdarg.h>
-
 VALUE
-rb_ary_new3(long n, ...)
+(rb_ary_new_from_args)(long n, ...)
 {
     va_list ar;
     VALUE ary;
@@ -332,7 +762,7 @@ rb_ary_new3(long n, ...)
 
     va_start(ar, n);
     for (i=0; i<n; i++) {
-	RARRAY_PTR(ary)[i] = va_arg(ar, VALUE);
+	ARY_SET(ary, i, va_arg(ar, VALUE));
     }
     va_end(ar);
 
@@ -340,14 +770,72 @@ rb_ary_new3(long n, ...)
     return ary;
 }
 
+MJIT_FUNC_EXPORTED VALUE
+rb_ary_tmp_new_from_values(VALUE klass, long n, const VALUE *elts)
+{
+    VALUE ary;
+
+    ary = ary_new(klass, n);
+    if (n > 0 && elts) {
+	ary_memcpy(ary, 0, n, elts);
+	ARY_SET_LEN(ary, n);
+    }
+
+    return ary;
+}
+
+VALUE
+rb_ary_new_from_values(long n, const VALUE *elts)
+{
+    return rb_ary_tmp_new_from_values(rb_cArray, n, elts);
+}
+
+static VALUE
+ec_ary_alloc(rb_execution_context_t *ec, VALUE klass)
+{
+    RB_EC_NEWOBJ_OF(ec, ary, struct RArray, klass, T_ARRAY | RARRAY_EMBED_FLAG | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0));
+    /* Created array is:
+     *   FL_SET_EMBED((VALUE)ary);
+     *   ARY_SET_EMBED_LEN((VALUE)ary, 0);
+     */
+    return (VALUE)ary;
+}
+
+static VALUE
+ec_ary_new(rb_execution_context_t *ec, VALUE klass, long capa)
+{
+    VALUE ary,*ptr;
+
+    if (capa < 0) {
+	rb_raise(rb_eArgError, "negative array size (or size too big)");
+    }
+    if (capa > ARY_MAX_SIZE) {
+	rb_raise(rb_eArgError, "array size too big");
+    }
+
+    RUBY_DTRACE_CREATE_HOOK(ARRAY, capa);
+
+    ary = ec_ary_alloc(ec, klass);
+
+    if (capa > RARRAY_EMBED_LEN_MAX) {
+        ptr = ary_heap_alloc(ary, capa);
+        FL_UNSET_EMBED(ary);
+        ARY_SET_PTR(ary, ptr);
+        ARY_SET_CAPA(ary, capa);
+        ARY_SET_HEAP_LEN(ary, 0);
+    }
+
+    return ary;
+}
+
 VALUE
-rb_ary_new4(long n, const VALUE *elts)
+rb_ec_ary_new_from_values(rb_execution_context_t *ec, long n, const VALUE *elts)
 {
     VALUE ary;
 
-    ary = rb_ary_new2(n);
+    ary = ec_ary_new(ec, rb_cArray, n);
     if (n > 0 && elts) {
-	MEMCPY(RARRAY_PTR(ary), elts, VALUE, n);
+	ary_memcpy(ary, 0, n, elts);
 	ARY_SET_LEN(ary, n);
     }
 
@@ -355,50 +843,127 @@ rb_ary_new4(long n, const VALUE *elts)
 }
 
 VALUE
-rb_ary_tmp_new(long len)
+rb_ary_tmp_new(long capa)
 {
-    return ary_new(0, len);
+    VALUE ary = ary_new(0, capa);
+    rb_ary_transient_heap_evacuate(ary, TRUE);
+    return ary;
+}
+
+VALUE
+rb_ary_tmp_new_fill(long capa)
+{
+    VALUE ary = ary_new(0, capa);
+    ary_memfill(ary, 0, capa, Qnil);
+    ARY_SET_LEN(ary, capa);
+    rb_ary_transient_heap_evacuate(ary, TRUE);
+    return ary;
 }
 
 void
 rb_ary_free(VALUE ary)
 {
     if (ARY_OWNS_HEAP_P(ary)) {
-	xfree(RARRAY_PTR(ary));
+        if (USE_DEBUG_COUNTER &&
+            !ARY_SHARED_ROOT_P(ary) &&
+            ARY_HEAP_CAPA(ary) > RARRAY_LEN(ary)) {
+            RB_DEBUG_COUNTER_INC(obj_ary_extracapa);
+        }
+
+        if (RARRAY_TRANSIENT_P(ary)) {
+            RB_DEBUG_COUNTER_INC(obj_ary_transient);
+        }
+        else {
+            RB_DEBUG_COUNTER_INC(obj_ary_ptr);
+            ary_heap_free(ary);
+        }
+    }
+    else {
+        RB_DEBUG_COUNTER_INC(obj_ary_embed);
+    }
+
+    if (ARY_SHARED_P(ary)) {
+        RB_DEBUG_COUNTER_INC(obj_ary_shared);
+    }
+    if (ARY_SHARED_ROOT_P(ary) && ARY_SHARED_ROOT_OCCUPIED(ary)) {
+        RB_DEBUG_COUNTER_INC(obj_ary_shared_root_occupied);
+    }
+}
+
+RUBY_FUNC_EXPORTED size_t
+rb_ary_memsize(VALUE ary)
+{
+    if (ARY_OWNS_HEAP_P(ary)) {
+	return ARY_CAPA(ary) * sizeof(VALUE);
     }
+    else {
+	return 0;
+    }
+}
+
+static inline void
+ary_discard(VALUE ary)
+{
+    rb_ary_free(ary);
+    RBASIC(ary)->flags |= RARRAY_EMBED_FLAG;
+    RBASIC(ary)->flags &= ~(RARRAY_EMBED_LEN_MASK | RARRAY_TRANSIENT_FLAG);
 }
 
 static VALUE
 ary_make_shared(VALUE ary)
 {
     assert(!ARY_EMBED_P(ary));
+    ary_verify(ary);
+
     if (ARY_SHARED_P(ary)) {
-	return ARY_SHARED(ary);
+        return ARY_SHARED_ROOT(ary);
+    }
+    else if (ARY_SHARED_ROOT_P(ary)) {
+	return ary;
+    }
+    else if (OBJ_FROZEN(ary)) {
+        rb_ary_transient_heap_evacuate(ary, TRUE);
+	ary_shrink_capa(ary);
+	FL_SET_SHARED_ROOT(ary);
+        ARY_SET_SHARED_ROOT_REFCNT(ary, 1);
+	return ary;
     }
     else {
-	NEWOBJ(shared, struct RArray);
-	OBJSETUP(shared, 0, T_ARRAY);
-        FL_UNSET_EMBED(shared);
-
-        ARY_SET_LEN((VALUE)shared, RARRAY_LEN(ary));
-        ARY_SET_PTR((VALUE)shared, RARRAY_PTR(ary));
-	FL_SET_SHARED_ROOT(shared);
-	ARY_SET_SHARED_NUM((VALUE)shared, 1);
+	long capa = ARY_CAPA(ary), len = RARRAY_LEN(ary);
+        const VALUE *ptr;
+	NEWOBJ_OF(shared, struct RArray, 0, T_ARRAY | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0));
+        VALUE vshared = (VALUE)shared;
+
+        rb_ary_transient_heap_evacuate(ary, TRUE);
+        ptr = ARY_HEAP_PTR(ary);
+
+        FL_UNSET_EMBED(vshared);
+        ARY_SET_LEN(vshared, capa);
+        ARY_SET_PTR(vshared, ptr);
+        ary_mem_clear(vshared, len, capa - len);
+        FL_SET_SHARED_ROOT(vshared);
+        ARY_SET_SHARED_ROOT_REFCNT(vshared, 1);
 	FL_SET_SHARED(ary);
-	ARY_SET_SHARED(ary, (VALUE)shared);
-	OBJ_FREEZE(shared);
-	return (VALUE)shared;
+        RB_DEBUG_COUNTER_INC(obj_ary_shared_create);
+        ARY_SET_SHARED(ary, vshared);
+        OBJ_FREEZE(vshared);
+
+        ary_verify(vshared);
+        ary_verify(ary);
+
+        return vshared;
     }
 }
 
-
 static VALUE
 ary_make_substitution(VALUE ary)
 {
-    if (RARRAY_LEN(ary) <= RARRAY_EMBED_LEN_MAX) {
-        VALUE subst = rb_ary_new2(RARRAY_LEN(ary));
-        MEMCPY(ARY_EMBED_PTR(subst), RARRAY_PTR(ary), VALUE, RARRAY_LEN(ary));
-        ARY_SET_EMBED_LEN(subst, RARRAY_LEN(ary));
+    long len = RARRAY_LEN(ary);
+
+    if (len <= RARRAY_EMBED_LEN_MAX) {
+	VALUE subst = rb_ary_new2(len);
+        ary_memcpy(subst, 0, len, RARRAY_CONST_PTR_TRANSIENT(ary));
+        ARY_SET_EMBED_LEN(subst, len);
         return subst;
     }
     else {
@@ -412,36 +977,37 @@ rb_assoc_new(VALUE car, VALUE cdr)
     return rb_ary_new3(2, car, cdr);
 }
 
-static VALUE
-to_ary(VALUE ary)
+VALUE
+rb_to_array_type(VALUE ary)
 {
-    return rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
+    return rb_convert_type_with_id(ary, T_ARRAY, "Array", idTo_ary);
 }
+#define to_ary rb_to_array_type
 
 VALUE
 rb_check_array_type(VALUE ary)
 {
-    return rb_check_convert_type(ary, T_ARRAY, "Array", "to_ary");
+    return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_ary);
+}
+
+MJIT_FUNC_EXPORTED VALUE
+rb_check_to_array(VALUE ary)
+{
+    return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_a);
 }
 
 /*
  *  call-seq:
- *     Array.try_convert(obj) -> array or nil
+ *    Array.try_convert(object) -> object, new_array, or nil
  *
- *  Try to convert <i>obj</i> into an array, using to_ary method.
- *  Returns converted array or nil if <i>obj</i> cannot be converted
- *  for any reason.  This method is to check if an argument is an
- *  array.  
+ *  If +object+ is an \Array object, returns +object+.
  *
- *     Array.try_convert([1])   # => [1]
- *     Array.try_convert("1")   # => nil
- *     
- *     if tmp = Array.try_convert(arg)
- *       # the argument is an array
- *     elsif tmp = String.try_convert(arg)
- *       # the argument is a string
- *     end
+ *  Otherwise if +object+ responds to <tt>:to_ary</tt>,
+ *  calls <tt>object.to_ary</tt> and returns the result.
  *
+ *  Returns +nil+ if +object+ does not respond to <tt>:to_ary</tt>
+ *
+ *  Raises an exception unless <tt>object.to_ary</tt> returns an \Array object.
  */
 
 static VALUE
@@ -452,40 +1018,46 @@ rb_ary_s_try_convert(VALUE dummy, VALUE ary)
 
 /*
  *  call-seq:
- *     Array.new(size=0, obj=nil)
- *     Array.new(array)
- *     Array.new(size) {|index| block }
- *
- *  Returns a new array. In the first form, the new array is
- *  empty. In the second it is created with _size_ copies of _obj_
- *  (that is, _size_ references to the same
- *  _obj_). The third form creates a copy of the array
- *  passed as a parameter (the array is generated by calling
- *  to_ary  on the parameter). In the last form, an array
- *  of the given size is created. Each element in this array is
- *  calculated by passing the element's index to the given block and
- *  storing the return value.
- *
- *     Array.new
- *     Array.new(2)
- *     Array.new(5, "A")
- * 
- *     # only one copy of the object is created
- *     a = Array.new(2, Hash.new)
- *     a[0]['cat'] = 'feline'
- *     a
- *     a[1]['cat'] = 'Felix'
- *     a
- * 
- *     # here multiple copies are created
- *     a = Array.new(2) { Hash.new }
- *     a[0]['cat'] = 'feline'
- *     a
- * 
- *     squares = Array.new(5) {|i| i*i}
- *     squares
- * 
- *     copy = Array.new(squares)
+ *    Array.new -> new_empty_array
+ *    Array.new(array) -> new_array
+ *    Array.new(size) -> new_array
+ *    Array.new(size, default_value) -> new_array
+ *    Array.new(size) {|index| ... } -> new_array
+ *
+ *  Returns a new \Array.
+ *
+ *  With no block and no arguments, returns a new empty \Array object.
+ *
+ *  With no block and a single \Array argument +array+,
+ *  returns a new \Array formed from +array+:
+ *    a = Array.new([:foo, 'bar', 2])
+ *    a.class # => Array
+ *    a # => [:foo, "bar", 2]
+ *
+ *  With no block and a single \Integer argument +size+,
+ *  returns a new \Array of the given size
+ *  whose elements are all +nil+:
+ *    a = Array.new(3)
+ *    a # => [nil, nil, nil]
+ *
+ *  With no block and arguments +size+ and +default_value+,
+ *  returns an \Array of the given size;
+ *  each element is that same +default_value+:
+ *    a = Array.new(3, 'x')
+ *    a # => ['x', 'x', 'x']
+ *
+ *  With a block and argument +size+,
+ *  returns an \Array of the given size;
+ *  the block is called with each successive integer +index+;
+ *  the element for that +index+ is the return value from the block:
+ *    a = Array.new(3) {|index| "Element #{index}" }
+ *    a # => ["Element 0", "Element 1", "Element 2"]
+ *
+ *  Raises ArgumentError if +size+ is negative.
+ *
+ *  With a block and no argument,
+ *  or a single argument +0+,
+ *  ignores the block and returns a new empty \Array.
  */
 
 static VALUE
@@ -495,9 +1067,9 @@ rb_ary_initialize(int argc, VALUE *argv, VALUE ary)
     VALUE size, val;
 
     rb_ary_modify(ary);
-    if (argc ==  0) {
-	if (ARY_OWNS_HEAP_P(ary) && RARRAY_PTR(ary)) {
-	    xfree(RARRAY_PTR(ary));
+    if (argc == 0) {
+        if (ARY_OWNS_HEAP_P(ary) && ARY_HEAP_PTR(ary) != NULL) {
+            ary_heap_free(ary);
 	}
         rb_ary_unshare_safe(ary);
         FL_SET_EMBED(ary);
@@ -517,12 +1089,14 @@ rb_ary_initialize(int argc, VALUE *argv, VALUE ary)
     }
 
     len = NUM2LONG(size);
+    /* NUM2LONG() may call size.to_int, ary can be frozen, modified, etc */
     if (len < 0) {
 	rb_raise(rb_eArgError, "negative array size");
     }
     if (len > ARY_MAX_SIZE) {
 	rb_raise(rb_eArgError, "array size too big");
     }
+    /* recheck after argument conversion */
     rb_ary_modify(ary);
     ary_resize_capa(ary, len);
     if (rb_block_given_p()) {
@@ -537,27 +1111,26 @@ rb_ary_initialize(int argc, VALUE *argv, VALUE ary)
 	}
     }
     else {
-	memfill(RARRAY_PTR(ary), len, val);
+	ary_memfill(ary, 0, len, val);
 	ARY_SET_LEN(ary, len);
     }
     return ary;
 }
 
-
-/* 
-* Returns a new array populated with the given objects. 
-*
-*   Array.[]( 1, 'a', /^A/ )
-*   Array[ 1, 'a', /^A/ ]
-*   [ 1, 'a', /^A/ ]
-*/
+/*
+ * Returns a new array populated with the given objects.
+ *
+ *   Array.[]( 1, 'a', /^A/)  # => [1, "a", /^A/]
+ *   Array[ 1, 'a', /^A/ ]    # => [1, "a", /^A/]
+ *   [ 1, 'a', /^A/ ]         # => [1, "a", /^A/]
+ */
 
 static VALUE
 rb_ary_s_create(int argc, VALUE *argv, VALUE klass)
 {
     VALUE ary = ary_new(klass, argc);
     if (argc > 0 && argv) {
-        MEMCPY(RARRAY_PTR(ary), argv, VALUE, argc);
+        ary_memcpy(ary, 0, argc, argv);
         ARY_SET_LEN(ary, argc);
     }
 
@@ -567,11 +1140,13 @@ rb_ary_s_create(int argc, VALUE *argv, VALUE klass)
 void
 rb_ary_store(VALUE ary, long idx, VALUE val)
 {
+    long len = RARRAY_LEN(ary);
+
     if (idx < 0) {
-	idx += RARRAY_LEN(ary);
+	idx += len;
 	if (idx < 0) {
-	    rb_raise(rb_eIndexError, "index %ld out of array",
-		     idx - RARRAY_LEN(ary));
+	    rb_raise(rb_eIndexError, "index %ld too small for array; minimum: %ld",
+		     idx - len, -len);
 	}
     }
     else if (idx >= ARY_MAX_SIZE) {
@@ -580,26 +1155,16 @@ rb_ary_store(VALUE ary, long idx, VALUE val)
 
     rb_ary_modify(ary);
     if (idx >= ARY_CAPA(ary)) {
-	long new_capa = ARY_CAPA(ary) / 2;
-
-	if (new_capa < ARY_DEFAULT_SIZE) {
-	    new_capa = ARY_DEFAULT_SIZE;
-	}
-	if (new_capa >= ARY_MAX_SIZE - idx) {
-	    new_capa = (ARY_MAX_SIZE - idx) / 2;
-	}
-	new_capa += idx;
-	ary_resize_capa(ary, new_capa);
+	ary_double_capa(ary, idx);
     }
-    if (idx > RARRAY_LEN(ary)) {
-	rb_mem_clear(RARRAY_PTR(ary) + RARRAY_LEN(ary),
-		     idx-RARRAY_LEN(ary) + 1);
+    if (idx > len) {
+	ary_mem_clear(ary, len, idx - len + 1);
     }
 
-    if (idx >= RARRAY_LEN(ary)) {
+    if (idx >= len) {
 	ARY_SET_LEN(ary, idx + 1);
     }
-    RARRAY_PTR(ary)[idx] = val;
+    ARY_SET(ary, idx, val);
 }
 
 static VALUE
@@ -611,7 +1176,7 @@ ary_make_partial(VALUE ary, VALUE klass, long offset, long len)
 
     if (len <= RARRAY_EMBED_LEN_MAX) {
         VALUE result = ary_alloc(klass);
-        MEMCPY(ARY_EMBED_PTR(result), RARRAY_PTR(ary) + offset, VALUE, len);
+        ary_memcpy(result, 0, len, RARRAY_CONST_PTR_TRANSIENT(ary) + offset);
         ARY_SET_EMBED_LEN(result, len);
         return result;
     }
@@ -620,20 +1185,69 @@ ary_make_partial(VALUE ary, VALUE klass, long offset, long len)
         FL_UNSET_EMBED(result);
 
         shared = ary_make_shared(ary);
-        ARY_SET_PTR(result, RARRAY_PTR(ary));
+        ARY_SET_PTR(result, RARRAY_CONST_PTR_TRANSIENT(ary));
         ARY_SET_LEN(result, RARRAY_LEN(ary));
         rb_ary_set_shared(result, shared);
 
         ARY_INCREASE_PTR(result, offset);
         ARY_SET_LEN(result, len);
+
+        ary_verify(shared);
+        ary_verify(result);
         return result;
     }
 }
 
 static VALUE
+ary_make_partial_step(VALUE ary, VALUE klass, long offset, long len, long step)
+{
+    assert(offset >= 0);
+    assert(len >= 0);
+    assert(offset+len <= RARRAY_LEN(ary));
+    assert(step != 0);
+
+    const VALUE *values = RARRAY_CONST_PTR_TRANSIENT(ary);
+    const long orig_len = len;
+
+    if ((step > 0 && step >= len) || (step < 0 && (step < -len))) {
+        VALUE result = ary_new(klass, 1);
+        VALUE *ptr = (VALUE *)ARY_EMBED_PTR(result);
+        RB_OBJ_WRITE(result, ptr, values[offset]);
+        ARY_SET_EMBED_LEN(result, 1);
+        return result;
+    }
+
+    long ustep = (step < 0) ? -step : step;
+    len = (len + ustep - 1) / ustep;
+
+    long i;
+    long j = offset + ((step > 0) ? 0 : (orig_len - 1));
+    VALUE result = ary_new(klass, len);
+    if (len <= RARRAY_EMBED_LEN_MAX) {
+        VALUE *ptr = (VALUE *)ARY_EMBED_PTR(result);
+        for (i = 0; i < len; ++i) {
+            RB_OBJ_WRITE(result, ptr+i, values[j]);
+            j += step;
+        }
+        ARY_SET_EMBED_LEN(result, len);
+    }
+    else {
+        RARRAY_PTR_USE_TRANSIENT(result, ptr, {
+            for (i = 0; i < len; ++i) {
+                RB_OBJ_WRITE(result, ptr+i, values[j]);
+                j += step;
+            }
+        });
+        ARY_SET_LEN(result, len);
+    }
+
+    return result;
+}
+
+static VALUE
 ary_make_shared_copy(VALUE ary)
 {
-    return ary_make_partial(ary, rb_obj_class(ary), 0, RARRAY_LEN(ary));
+    return ary_make_partial(ary, rb_cArray, 0, RARRAY_LEN(ary));
 }
 
 enum ary_take_pos_flags
@@ -643,67 +1257,93 @@ enum ary_take_pos_flags
 };
 
 static VALUE
-ary_take_first_or_last(int argc, VALUE *argv, VALUE ary, enum ary_take_pos_flags last)
+ary_take_first_or_last(int argc, const VALUE *argv, VALUE ary, enum ary_take_pos_flags last)
 {
-    VALUE nv;
     long n;
+    long len;
     long offset = 0;
 
-    rb_scan_args(argc, argv, "1", &nv);
-    n = NUM2LONG(nv);
-    if (n > RARRAY_LEN(ary)) {
-	n = RARRAY_LEN(ary);
+    argc = rb_check_arity(argc, 0, 1);
+    /* the case optional argument is omitted should be handled in
+     * callers of this function.  if another arity case is added,
+     * this arity check needs to rewrite. */
+    RUBY_ASSERT_ALWAYS(argc == 1);
+
+    n = NUM2LONG(argv[0]);
+    len = RARRAY_LEN(ary);
+    if (n > len) {
+	n = len;
     }
     else if (n < 0) {
 	rb_raise(rb_eArgError, "negative array size");
     }
     if (last) {
-	offset = RARRAY_LEN(ary) - n;
+	offset = len - n;
     }
     return ary_make_partial(ary, rb_cArray, offset, n);
 }
 
 /*
  *  call-seq:
- *     array << obj            -> array
- *  
- *  Append---Pushes the given object on to the end of this array. This
- *  expression returns the array itself, so several appends
- *  may be chained together.
+ *    array << object -> self
  *
- *     [ 1, 2 ] << "c" << "d" << [ 3, 4 ]
- *             #=>  [ 1, 2, "c", "d", [ 3, 4 ] ]
+ *  Appends +object+ to +self+; returns +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a << :baz # => [:foo, "bar", 2, :baz]
  *
+ *  Appends +object+ as one element, even if it is another \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a << [3, 4]
+ *    a1 # => [:foo, "bar", 2, [3, 4]]
  */
 
 VALUE
 rb_ary_push(VALUE ary, VALUE item)
 {
-    rb_ary_store(ary, RARRAY_LEN(ary), item);
+    long idx = RARRAY_LEN((ary_verify(ary), ary));
+    VALUE target_ary = ary_ensure_room_for_push(ary, 1);
+    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+	RB_OBJ_WRITE(target_ary, &ptr[idx], item);
+    });
+    ARY_SET_LEN(ary, idx + 1);
+    ary_verify(ary);
+    return ary;
+}
+
+VALUE
+rb_ary_cat(VALUE ary, const VALUE *argv, long len)
+{
+    long oldlen = RARRAY_LEN(ary);
+    VALUE target_ary = ary_ensure_room_for_push(ary, len);
+    ary_memcpy0(ary, oldlen, len, argv, target_ary);
+    ARY_SET_LEN(ary, oldlen + len);
     return ary;
 }
 
-/* 
+/*
  *  call-seq:
- *     array.push(obj, ... )   -> array
- *  
- *  Append---Pushes the given object(s) on to the end of this array. This
- *  expression returns the array itself, so several appends
- *  may be chained together.
+ *    array.push(*objects) -> self
+ *
+ *  Appends trailing elements.
+ *
+ *  Appends each argument in +objects+ to +self+;  returns +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.push(:baz, :bat) # => [:foo, "bar", 2, :baz, :bat]
+ *
+ *  Appends each argument as one element, even if it is another \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.push([:baz, :bat], [:bam, :bad])
+ *    a1 # => [:foo, "bar", 2, [:baz, :bat], [:bam, :bad]]
+ *
+ *  Array#append is an alias for \Array#push.
  *
- *     a = [ "a", "b", "c" ]
- *     a.push("d", "e", "f")  
- *             #=> ["a", "b", "c", "d", "e", "f"]
+ *  Related: #pop, #shift, #unshift.
  */
 
 static VALUE
 rb_ary_push_m(int argc, VALUE *argv, VALUE ary)
 {
-    rb_ary_modify_check(ary);
-    while (argc--) {
-	rb_ary_push(ary, *argv++);
-    }
-    return ary;
+    return rb_ary_cat(ary, argv, argc);
 }
 
 VALUE
@@ -711,33 +1351,46 @@ rb_ary_pop(VALUE ary)
 {
     long n;
     rb_ary_modify_check(ary);
-    if (RARRAY_LEN(ary) == 0) return Qnil;
+    n = RARRAY_LEN(ary);
+    if (n == 0) return Qnil;
     if (ARY_OWNS_HEAP_P(ary) &&
-	RARRAY_LEN(ary) * 3 < ARY_CAPA(ary) &&
+	n * 3 < ARY_CAPA(ary) &&
 	ARY_CAPA(ary) > ARY_DEFAULT_SIZE)
     {
-	ary_resize_capa(ary, RARRAY_LEN(ary) * 2);
+	ary_resize_capa(ary, n * 2);
     }
-    n = RARRAY_LEN(ary)-1;
+    --n;
     ARY_SET_LEN(ary, n);
-    return RARRAY_PTR(ary)[n];
+    ary_verify(ary);
+    return RARRAY_AREF(ary, n);
 }
 
 /*
  *  call-seq:
- *     array.pop    -> obj or nil
- *     array.pop(n) -> array
- *  
- *  Removes the last element from <i>self</i> and returns it, or
- *  <code>nil</code> if the array is empty.
+ *    array.pop -> object or nil
+ *    array.pop(n) -> new_array
  *
- *  If a number _n_ is given, returns an array of the last n elements
- *  (or less) just like <code>array.slice!(-n, n)</code> does.
- *     
- *     a = [ "a", "b", "c", "d" ]
- *     a.pop     #=> "d"
- *     a.pop(2)  #=> ["b", "c"]
- *     a         #=> ["a"]
+ *  Removes and returns trailing elements.
+ *
+ *  When no argument is given and +self+ is not empty,
+ *  removes and returns the last element:
+ *    a = [:foo, 'bar', 2]
+ *    a.pop # => 2
+ *    a # => [:foo, "bar"]
+ *
+ *  Returns +nil+ if the array is empty.
+ *
+ *  When a non-negative \Integer argument +n+ is given and is in range,
+ *  removes and returns the last +n+ elements in a new \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.pop(2) # => ["bar", 2]
+ *
+ *  If +n+ is positive and out of range,
+ *  removes and returns all elements:
+ *    a = [:foo, 'bar', 2]
+ *    a.pop(50) # => [:foo, "bar", 2]
+ *
+ *  Related: #push, #shift, #unshift.
  */
 
 static VALUE
@@ -752,6 +1405,7 @@ rb_ary_pop_m(int argc, VALUE *argv, VALUE ary)
     rb_ary_modify_check(ary);
     result = ary_take_first_or_last(argc, argv, ary, ARY_TAKE_LAST);
     ARY_INCREASE_LEN(ary, -RARRAY_LEN(result));
+    ary_verify(ary);
     return result;
 }
 
@@ -759,46 +1413,64 @@ VALUE
 rb_ary_shift(VALUE ary)
 {
     VALUE top;
+    long len = RARRAY_LEN(ary);
 
     rb_ary_modify_check(ary);
-    if (RARRAY_LEN(ary) == 0) return Qnil;
-    top = RARRAY_PTR(ary)[0];
+    if (len == 0) return Qnil;
+    top = RARRAY_AREF(ary, 0);
     if (!ARY_SHARED_P(ary)) {
-	if (RARRAY_LEN(ary) < ARY_DEFAULT_SIZE) {
-	    MEMMOVE(RARRAY_PTR(ary), RARRAY_PTR(ary)+1, VALUE, RARRAY_LEN(ary)-1);
+	if (len < ARY_DEFAULT_SIZE) {
+            RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+		MEMMOVE(ptr, ptr+1, VALUE, len-1);
+	    }); /* WB: no new reference */
             ARY_INCREASE_LEN(ary, -1);
+            ary_verify(ary);
 	    return top;
 	}
         assert(!ARY_EMBED_P(ary)); /* ARY_EMBED_LEN_MAX < ARY_DEFAULT_SIZE */
 
-	RARRAY_PTR(ary)[0] = Qnil;
+	ARY_SET(ary, 0, Qnil);
 	ary_make_shared(ary);
     }
+    else if (ARY_SHARED_ROOT_OCCUPIED(ARY_SHARED_ROOT(ary))) {
+        RARRAY_PTR_USE_TRANSIENT(ary, ptr, ptr[0] = Qnil);
+    }
     ARY_INCREASE_PTR(ary, 1);		/* shift ptr */
     ARY_INCREASE_LEN(ary, -1);
 
+    ary_verify(ary);
+
     return top;
 }
 
 /*
  *  call-seq:
- *     array.shift    -> obj or nil
- *     array.shift(n) -> array
- *  
- *  Returns the first element of <i>self</i> and removes it (shifting all
- *  other elements down by one). Returns <code>nil</code> if the array
- *  is empty.
+ *     array.shift -> object or nil
+ *     array.shift(n) -> new_array
  *
- *  If a number _n_ is given, returns an array of the first n elements
- *  (or less) just like <code>array.slice!(0, n)</code> does.
- *     
- *     args = [ "-m", "-q", "filename" ]
- *     args.shift     #=> "-m"
- *     args           #=> ["-q", "filename"]
+ *  Removes and returns leading elements.
  *
- *     args = [ "-m", "-q", "filename" ]
- *     args.shift(2)  #=> ["-m", "-q"]
- *     args           #=> ["filename"]
+ *  When no argument is given, removes and returns the first element:
+ *    a = [:foo, 'bar', 2]
+ *    a.shift # => :foo
+ *    a # => ['bar', 2]
+ *
+ *  Returns +nil+ if +self+ is empty.
+ *
+ *  When positive \Integer argument +n+ is given, removes the first +n+ elements;
+ *  returns those elements in a new \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.shift(2) # => [:foo, 'bar']
+ *    a # => [2]
+ *
+ *  If +n+ is as large as or larger than <tt>self.length</tt>,
+ *  removes all elements; returns those elements in a new \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.shift(3) # => [:foo, 'bar', 2]
+ *
+ *  If +n+ is zero, returns a new empty \Array; +self+ is unmodified.
+ *
+ *  Related: #push, #pop, #unshift.
  */
 
 static VALUE
@@ -814,45 +1486,167 @@ rb_ary_shift_m(int argc, VALUE *argv, VALUE ary)
     rb_ary_modify_check(ary);
     result = ary_take_first_or_last(argc, argv, ary, ARY_TAKE_FIRST);
     n = RARRAY_LEN(result);
-    if (ARY_SHARED_P(ary)) {
-        ARY_INCREASE_PTR(ary, n);
+    rb_ary_behead(ary,n);
+
+    return result;
+}
+
+static VALUE
+behead_shared(VALUE ary, long n)
+{
+    assert(ARY_SHARED_P(ary));
+    rb_ary_modify_check(ary);
+    if (ARY_SHARED_ROOT_OCCUPIED(ARY_SHARED_ROOT(ary))) {
+        ary_mem_clear(ary, 0, n);
+    }
+    ARY_INCREASE_PTR(ary, n);
+    ARY_INCREASE_LEN(ary, -n);
+    ary_verify(ary);
+    return ary;
+}
+
+static VALUE
+behead_transient(VALUE ary, long n)
+{
+    rb_ary_modify_check(ary);
+    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+        MEMMOVE(ptr, ptr+n, VALUE, RARRAY_LEN(ary)-n);
+    }); /* WB: no new reference */
+    ARY_INCREASE_LEN(ary, -n);
+    ary_verify(ary);
+    return ary;
+}
+
+MJIT_FUNC_EXPORTED VALUE
+rb_ary_behead(VALUE ary, long n)
+{
+    if (n <= 0) {
+        return ary;
+    }
+    else if (ARY_SHARED_P(ary)) {
+        return behead_shared(ary, n);
+    }
+    else if (RARRAY_LEN(ary) >= ARY_DEFAULT_SIZE) {
+        ary_make_shared(ary);
+        return behead_shared(ary, n);
     }
     else {
-	MEMMOVE(RARRAY_PTR(ary), RARRAY_PTR(ary)+n, VALUE, RARRAY_LEN(ary)-n);
+        return behead_transient(ary, n);
     }
-    ARY_INCREASE_LEN(ary, -n);
+}
 
-    return result;
+static VALUE
+make_room_for_unshift(VALUE ary, const VALUE *head, VALUE *sharedp, int argc, long capa, long len)
+{
+    if (head - sharedp < argc) {
+        long room = capa - len - argc;
+
+        room -= room >> 4;
+        MEMMOVE((VALUE *)sharedp + argc + room, head, VALUE, len);
+        head = sharedp + argc + room;
+    }
+    ARY_SET_PTR(ary, head - argc);
+    assert(ARY_SHARED_ROOT_OCCUPIED(ARY_SHARED_ROOT(ary)));
+
+    ary_verify(ary);
+    return ARY_SHARED_ROOT(ary);
+}
+
+static VALUE
+ary_modify_for_unshift(VALUE ary, int argc)
+{
+    long len = RARRAY_LEN(ary);
+    long new_len = len + argc;
+    long capa;
+    const VALUE *head, *sharedp;
+
+    rb_ary_modify(ary);
+    capa = ARY_CAPA(ary);
+    if (capa - (capa >> 6) <= new_len) {
+	ary_double_capa(ary, new_len);
+    }
+
+    /* use shared array for big "queues" */
+    if (new_len > ARY_DEFAULT_SIZE * 4) {
+        ary_verify(ary);
+
+        /* make a room for unshifted items */
+	capa = ARY_CAPA(ary);
+	ary_make_shared(ary);
+
+        head = sharedp = RARRAY_CONST_PTR_TRANSIENT(ary);
+        return make_room_for_unshift(ary, head, (void *)sharedp, argc, capa, len);
+    }
+    else {
+	/* sliding items */
+        RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+	    MEMMOVE(ptr + argc, ptr, VALUE, len);
+	});
+
+        ary_verify(ary);
+	return ary;
+    }
+}
+
+static VALUE
+ary_ensure_room_for_unshift(VALUE ary, int argc)
+{
+    long len = RARRAY_LEN(ary);
+    long new_len = len + argc;
+
+    if (len > ARY_MAX_SIZE - argc) {
+        rb_raise(rb_eIndexError, "index %ld too big", new_len);
+    }
+    else if (! ARY_SHARED_P(ary)) {
+        return ary_modify_for_unshift(ary, argc);
+    }
+    else {
+        VALUE shared_root = ARY_SHARED_ROOT(ary);
+        long capa = RARRAY_LEN(shared_root);
+
+        if (! ARY_SHARED_ROOT_OCCUPIED(shared_root)) {
+            return ary_modify_for_unshift(ary, argc);
+        }
+        else if (new_len > capa) {
+            return ary_modify_for_unshift(ary, argc);
+        }
+        else {
+            const VALUE * head = RARRAY_CONST_PTR_TRANSIENT(ary);
+            void *sharedp = (void *)RARRAY_CONST_PTR_TRANSIENT(shared_root);
+
+            rb_ary_modify_check(ary);
+            return make_room_for_unshift(ary, head, sharedp, argc, capa, len);
+        }
+    }
 }
 
 /*
  *  call-seq:
- *     array.unshift(obj, ...)  -> array
- *  
- *  Prepends objects to the front of <i>array</i>.
- *  other elements up one.
- *     
- *     a = [ "b", "c", "d" ]
- *     a.unshift("a")   #=> ["a", "b", "c", "d"]
- *     a.unshift(1, 2)  #=> [ 1, 2, "a", "b", "c", "d"]
+ *    array.unshift(*objects) -> self
+ *
+ *  Prepends the given +objects+ to +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.unshift(:bam, :bat) # => [:bam, :bat, :foo, "bar", 2]
+ *
+ *  Array#prepend is an alias for Array#unshift.
+ *
+ *  Related: #push, #pop, #shift.
  */
 
 static VALUE
 rb_ary_unshift_m(int argc, VALUE *argv, VALUE ary)
 {
-    long len;
+    long len = RARRAY_LEN(ary);
+    VALUE target_ary;
 
-    if (argc == 0) return ary;
-    rb_ary_modify(ary);
-    if (ARY_CAPA(ary) <= (len = RARRAY_LEN(ary)) + argc) {
-	ary_resize_capa(ary, len + argc + ARY_DEFAULT_SIZE);
+    if (argc == 0) {
+	rb_ary_modify_check(ary);
+	return ary;
     }
 
-    /* sliding items */
-    MEMMOVE(RARRAY_PTR(ary) + argc, RARRAY_PTR(ary), VALUE, len);
-    MEMCPY(RARRAY_PTR(ary), argv, VALUE, argc);
-    ARY_INCREASE_LEN(ary, argc);
-    
+    target_ary = ary_ensure_room_for_unshift(ary, argc);
+    ary_memcpy0(ary, 0, argc, argv, target_ary);
+    ARY_SET_LEN(ary, len + argc);
     return ary;
 }
 
@@ -866,119 +1660,198 @@ rb_ary_unshift(VALUE ary, VALUE item)
 static inline VALUE
 rb_ary_elt(VALUE ary, long offset)
 {
-    if (RARRAY_LEN(ary) == 0) return Qnil;
-    if (offset < 0 || RARRAY_LEN(ary) <= offset) {
+    long len = RARRAY_LEN(ary);
+    if (len == 0) return Qnil;
+    if (offset < 0 || len <= offset) {
 	return Qnil;
     }
-    return RARRAY_PTR(ary)[offset];
+    return RARRAY_AREF(ary, offset);
 }
 
 VALUE
 rb_ary_entry(VALUE ary, long offset)
 {
-    if (offset < 0) {
-	offset += RARRAY_LEN(ary);
-    }
-    return rb_ary_elt(ary, offset);
+    return rb_ary_entry_internal(ary, offset);
 }
 
 VALUE
-rb_ary_subseq(VALUE ary, long beg, long len)
+rb_ary_subseq_step(VALUE ary, long beg, long len, long step)
 {
     VALUE klass;
+    long alen = RARRAY_LEN(ary);
 
-    if (beg > RARRAY_LEN(ary)) return Qnil;
+    if (beg > alen) return Qnil;
     if (beg < 0 || len < 0) return Qnil;
 
-    if (RARRAY_LEN(ary) < len || RARRAY_LEN(ary) < beg + len) {
-	len = RARRAY_LEN(ary) - beg;
+    if (alen < len || alen < beg + len) {
+	len = alen - beg;
     }
-    klass = rb_obj_class(ary);
+    klass = rb_cArray;
     if (len == 0) return ary_new(klass, 0);
+    if (step == 0)
+        rb_raise(rb_eArgError, "slice step cannot be zero");
+    if (step == 1)
+        return ary_make_partial(ary, klass, beg, len);
+    else
+        return ary_make_partial_step(ary, klass, beg, len, step);
+}
 
-    return ary_make_partial(ary, klass, beg, len);
+VALUE
+rb_ary_subseq(VALUE ary, long beg, long len)
+{
+    return rb_ary_subseq_step(ary, beg, len, 1);
 }
 
-/* 
+static VALUE rb_ary_aref2(VALUE ary, VALUE b, VALUE e);
+
+/*
  *  call-seq:
- *     array[index]                -> obj      or nil
- *     array[start, length]        -> an_array or nil
- *     array[range]                -> an_array or nil
- *     array.slice(index)          -> obj      or nil
- *     array.slice(start, length)  -> an_array or nil
- *     array.slice(range)          -> an_array or nil
+ *    array[index] -> object or nil
+ *    array[start, length] -> object or nil
+ *    array[range] -> object or nil
+ *    array[aseq] -> object or nil
+ *    array.slice(index) -> object or nil
+ *    array.slice(start, length) -> object or nil
+ *    array.slice(range) -> object or nil
+ *    array.slice(aseq) -> object or nil
+ *
+ *  Returns elements from +self+; does not modify +self+.
+ *
+ *  When a single \Integer argument +index+ is given, returns the element at offset +index+:
+ *    a = [:foo, 'bar', 2]
+ *    a[0] # => :foo
+ *    a[2] # => 2
+ *    a # => [:foo, "bar", 2]
+ *
+ *  If +index+ is negative, counts relative to the end of +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a[-1] # => 2
+ *    a[-2] # => "bar"
+ *
+ *  If +index+ is out of range, returns +nil+.
+ *
+ *  When two \Integer arguments +start+ and +length+ are given,
+ *  returns a new \Array of size +length+ containing successive elements beginning at offset +start+:
+ *    a = [:foo, 'bar', 2]
+ *    a[0, 2] # => [:foo, "bar"]
+ *    a[1, 2] # => ["bar", 2]
+ *
+ *  If <tt>start + length</tt> is greater than <tt>self.length</tt>,
+ *  returns all elements from offset +start+ to the end:
+ *    a = [:foo, 'bar', 2]
+ *    a[0, 4] # => [:foo, "bar", 2]
+ *    a[1, 3] # => ["bar", 2]
+ *    a[2, 2] # => [2]
+ *
+ *  If <tt>start == self.size</tt> and <tt>length >= 0</tt>,
+ *  returns a new empty \Array.
+ *
+ *  If +length+ is negative, returns +nil+.
+ *
+ *  When a single \Range argument +range+ is given,
+ *  treats <tt>range.min</tt> as +start+ above
+ *  and <tt>range.size</tt> as +length+ above:
+ *    a = [:foo, 'bar', 2]
+ *    a[0..1] # => [:foo, "bar"]
+ *    a[1..2] # => ["bar", 2]
+ *
+ *  Special case: If <tt>range.start == a.size</tt>, returns a new empty \Array.
+ *
+ *  If <tt>range.end</tt> is negative, calculates the end index from the end:
+ *    a = [:foo, 'bar', 2]
+ *    a[0..-1] # => [:foo, "bar", 2]
+ *    a[0..-2] # => [:foo, "bar"]
+ *    a[0..-3] # => [:foo]
+ *
+ *  If <tt>range.start</tt> is negative, calculates the start index from the end:
+ *    a = [:foo, 'bar', 2]
+ *    a[-1..2] # => [2]
+ *    a[-2..2] # => ["bar", 2]
+ *    a[-3..2] # => [:foo, "bar", 2]
+ *
+ *  If <tt>range.start</tt> is larger than the array size, returns +nil+.
+ *    a = [:foo, 'bar', 2]
+ *    a[4..1] # => nil
+ *    a[4..0] # => nil
+ *    a[4..-1] # => nil
  *
- *  Element Reference---Returns the element at _index_,
- *  or returns a subarray starting at _start_ and
- *  continuing for _length_ elements, or returns a subarray
- *  specified by _range_.
- *  Negative indices count backward from the end of the
- *  array (-1 is the last element). Returns nil if the index
- *  (or starting index) are out of range.
+ *  When a single Enumerator::ArithmeticSequence argument +aseq+ is given,
+ *  returns an Array of elements corresponding to the indexes produced by
+ *  the sequence.
+ *    a = ['--', 'data1', '--', 'data2', '--', 'data3']
+ *    a[(1..).step(2)] # => ["data1", "data2", "data3"]
  *
- *     a = [ "a", "b", "c", "d", "e" ]
- *     a[2] +  a[0] + a[1]    #=> "cab"
- *     a[6]                   #=> nil
- *     a[1, 2]                #=> [ "b", "c" ]
- *     a[1..3]                #=> [ "b", "c", "d" ]
- *     a[4..7]                #=> [ "e" ]
- *     a[6..10]               #=> nil
- *     a[-3, 3]               #=> [ "c", "d", "e" ]
- *     # special cases
- *     a[5]                   #=> nil
- *     a[5, 1]                #=> []
- *     a[5..10]               #=> []
+ *  Unlike slicing with range, if the start or the end of the arithmetic sequence
+ *  is larger than array size, throws RangeError.
+ *    a = ['--', 'data1', '--', 'data2', '--', 'data3']
+ *    a[(1..11).step(2)]
+ *    # RangeError (((1..11).step(2)) out of range)
+ *    a[(7..).step(2)]
+ *    # RangeError (((7..).step(2)) out of range)
  *
+ *  If given a single argument, and its type is not one of the listed, tries to
+ *  convert it to Integer, and raises if it is impossible:
+ *    a = [:foo, 'bar', 2]
+ *    # Raises TypeError (no implicit conversion of Symbol into Integer):
+ *    a[:foo]
+ *
+ *  Array#slice is an alias for Array#[].
  */
 
 VALUE
-rb_ary_aref(int argc, VALUE *argv, VALUE ary)
+rb_ary_aref(int argc, const VALUE *argv, VALUE ary)
 {
-    VALUE arg;
-    long beg, len;
-
+    rb_check_arity(argc, 1, 2);
     if (argc == 2) {
-	beg = NUM2LONG(argv[0]);
-	len = NUM2LONG(argv[1]);
-	if (beg < 0) {
-	    beg += RARRAY_LEN(ary);
-	}
-	return rb_ary_subseq(ary, beg, len);
+	return rb_ary_aref2(ary, argv[0], argv[1]);
     }
-    if (argc != 1) {
-	rb_scan_args(argc, argv, "11", 0, 0);
+    return rb_ary_aref1(ary, argv[0]);
+}
+
+static VALUE
+rb_ary_aref2(VALUE ary, VALUE b, VALUE e)
+{
+    long beg = NUM2LONG(b);
+    long len = NUM2LONG(e);
+    if (beg < 0) {
+	beg += RARRAY_LEN(ary);
     }
-    arg = argv[0];
+    return rb_ary_subseq(ary, beg, len);
+}
+
+MJIT_FUNC_EXPORTED VALUE
+rb_ary_aref1(VALUE ary, VALUE arg)
+{
+    long beg, len, step;
+
     /* special case - speeding up */
     if (FIXNUM_P(arg)) {
 	return rb_ary_entry(ary, FIX2LONG(arg));
     }
-    /* check if idx is Range */
-    switch (rb_range_beg_len(arg, &beg, &len, RARRAY_LEN(ary), 0)) {
+    /* check if idx is Range or ArithmeticSequence */
+    switch (rb_arithmetic_sequence_beg_len_step(arg, &beg, &len, &step, RARRAY_LEN(ary), 0)) {
       case Qfalse:
-	break;
+        break;
       case Qnil:
-	return Qnil;
+        return Qnil;
       default:
-	return rb_ary_subseq(ary, beg, len);
+        return rb_ary_subseq_step(ary, beg, len, step);
     }
+
     return rb_ary_entry(ary, NUM2LONG(arg));
 }
 
-/* 
+/*
  *  call-seq:
- *     array.at(index)   ->   obj  or nil
+ *    array.at(index) -> object
  *
- *  Returns the element at _index_. A
- *  negative index counts from the end of _self_.  Returns +nil+
- *  if the index is out of range. See also <code>Array#[]</code>.
- *
- *     a = [ "a", "b", "c", "d", "e" ]
- *     a.at(0)     #=> "a"
- *     a.at(-1)    #=> "e"
+ *  Returns the element at \Integer offset +index+; does not modify +self+.
+ *    a = [:foo, 'bar', 2]
+ *    a.at(0) # => :foo
+ *    a.at(2) # => 2
  */
 
-static VALUE
+VALUE
 rb_ary_at(VALUE ary, VALUE pos)
 {
     return rb_ary_entry(ary, NUM2LONG(pos));
@@ -986,24 +1859,39 @@ rb_ary_at(VALUE ary, VALUE pos)
 
 /*
  *  call-seq:
- *     array.first     ->   obj or nil
- *     array.first(n)  ->   an_array
- *  
- *  Returns the first element, or the first +n+ elements, of the array.
- *  If the array is empty, the first form returns <code>nil</code>, and the
- *  second form returns an empty array.
- *     
- *     a = [ "q", "r", "s", "t" ]
- *     a.first     #=> "q"
- *     a.first(2)  #=> ["q", "r"]
+ *    array.first -> object or nil
+ *    array.first(n) -> new_array
+ *
+ *  Returns elements from +self+; does not modify +self+.
+ *
+ *  When no argument is given, returns the first element:
+ *    a = [:foo, 'bar', 2]
+ *    a.first # => :foo
+ *    a # => [:foo, "bar", 2]
+ *
+ *  If +self+ is empty, returns +nil+.
+ *
+ *  When non-negative \Integer argument +n+ is given,
+ *  returns the first +n+ elements in a new \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.first(2) # => [:foo, "bar"]
+ *
+ *  If <tt>n >= array.size</tt>, returns all elements:
+ *    a = [:foo, 'bar', 2]
+ *    a.first(50) # => [:foo, "bar", 2]
+ *
+ *  If <tt>n == 0</tt> returns an new empty \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.first(0) # []
+ *
+ *  Related: #last.
  */
-
 static VALUE
 rb_ary_first(int argc, VALUE *argv, VALUE ary)
 {
     if (argc == 0) {
 	if (RARRAY_LEN(ary) == 0) return Qnil;
-	return RARRAY_PTR(ary)[0];
+	return RARRAY_AREF(ary, 0);
     }
     else {
 	return ary_take_first_or_last(argc, argv, ary, ARY_TAKE_FIRST);
@@ -1012,23 +1900,41 @@ rb_ary_first(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *     array.last     ->  obj or nil
- *     array.last(n)  ->  an_array
- *  
- *  Returns the last element(s) of <i>self</i>. If the array is empty,
- *  the first form returns <code>nil</code>.
- *     
- *     a = [ "w", "x", "y", "z" ]
- *     a.last     #=> "z"
- *     a.last(2)  #=> ["y", "z"]
+ *    array.last  -> object or nil
+ *    array.last(n) -> new_array
+ *
+ *  Returns elements from +self+; +self+ is not modified.
+ *
+ *  When no argument is given, returns the last element:
+ *    a = [:foo, 'bar', 2]
+ *    a.last # => 2
+ *    a # => [:foo, "bar", 2]
+ *
+ *  If +self+ is empty, returns +nil+.
+ *
+ *  When non-negative \Innteger argument +n+ is given,
+ *  returns the last +n+ elements in a new \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.last(2) # => ["bar", 2]
+ *
+ *  If <tt>n >= array.size</tt>, returns all elements:
+ *    a = [:foo, 'bar', 2]
+ *    a.last(50) # => [:foo, "bar", 2]
+ *
+ *  If <tt>n == 0</tt>, returns an new empty \Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.last(0) # []
+ *
+ *  Related: #first.
  */
 
 VALUE
-rb_ary_last(int argc, VALUE *argv, VALUE ary)
+rb_ary_last(int argc, const VALUE *argv, VALUE ary)
 {
     if (argc == 0) {
-	if (RARRAY_LEN(ary) == 0) return Qnil;
-	return RARRAY_PTR(ary)[RARRAY_LEN(ary)-1];
+	long len = RARRAY_LEN(ary);
+	if (len == 0) return Qnil;
+	return RARRAY_AREF(ary, len-1);
     }
     else {
 	return ary_take_first_or_last(argc, argv, ary, ARY_TAKE_LAST);
@@ -1037,22 +1943,35 @@ rb_ary_last(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *     array.fetch(index)                    -> obj
- *     array.fetch(index, default )          -> obj
- *     array.fetch(index) {|index| block }   -> obj
- *  
- *  Tries to return the element at position <i>index</i>. If the index
- *  lies outside the array, the first form throws an
- *  <code>IndexError</code> exception, the second form returns
- *  <i>default</i>, and the third form returns the value of invoking
- *  the block, passing in the index. Negative values of <i>index</i>
- *  count from the end of the array.
- *     
- *     a = [ 11, 22, 33, 44 ]
- *     a.fetch(1)               #=> 22
- *     a.fetch(-1)              #=> 44
- *     a.fetch(4, 'cat')        #=> "cat"
- *     a.fetch(4) { |i| i*i }   #=> 16
+ *    array.fetch(index) -> element
+ *    array.fetch(index, default_value) -> element
+ *    array.fetch(index) {|index| ... } -> element
+ *
+ *  Returns the element at offset  +index+.
+ *
+ *  With the single \Integer argument +index+,
+ *  returns the element at offset +index+:
+ *    a = [:foo, 'bar', 2]
+ *    a.fetch(1) # => "bar"
+ *
+ *  If +index+ is negative, counts from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a.fetch(-1) # => 2
+ *    a.fetch(-2) # => "bar"
+ *
+ *  With arguments +index+ and +default_value+,
+ *  returns the element at offset +index+ if index is in range,
+ *  otherwise returns +default_value+:
+ *    a = [:foo, 'bar', 2]
+ *    a.fetch(1, nil) # => "bar"
+ *
+ *  With argument +index+ and a block,
+ *  returns the element at offset +index+ if index is in range
+ *  (and the block is not called); otherwise calls the block with index and returns its return value:
+ *
+ *    a = [:foo, 'bar', 2]
+ *    a.fetch(1) {|index| raise 'Cannot happen' } # => "bar"
+ *    a.fetch(50) {|index| "Value for #{index}" } # => "Value for 50"
  */
 
 static VALUE
@@ -1075,29 +1994,47 @@ rb_ary_fetch(int argc, VALUE *argv, VALUE ary)
     if (idx < 0 || RARRAY_LEN(ary) <= idx) {
 	if (block_given) return rb_yield(pos);
 	if (argc == 1) {
-	    rb_raise(rb_eIndexError, "index %ld out of array", idx);
+	    rb_raise(rb_eIndexError, "index %ld outside of array bounds: %ld...%ld",
+			idx - (idx < 0 ? RARRAY_LEN(ary) : 0), -RARRAY_LEN(ary), RARRAY_LEN(ary));
 	}
 	return ifnone;
     }
-    return RARRAY_PTR(ary)[idx];
+    return RARRAY_AREF(ary, idx);
 }
 
 /*
  *  call-seq:
- *     array.index(obj)           ->  int or nil
- *     array.index {|item| block} ->  int or nil
- *  
- *  Returns the index of the first object in <i>self</i> such that is
- *  <code>==</code> to <i>obj</i>. If a block is given instead of an
- *  argument, returns first object for which <em>block</em> is true.
- *  Returns <code>nil</code> if no match is found.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.index("b")        #=> 1
- *     a.index("z")        #=> nil
- *     a.index{|x|x=="b"}  #=> 1
+ *    array.index(object) -> integer or nil
+ *    array.index {|element| ... } -> integer or nil
+ *    array.index -> new_enumerator
+ *
+ *  Returns the index of a specified element.
+ *
+ *  When argument +object+ is given but no block,
+ *  returns the index of the first element +element+
+ *  for which <tt>object == element</tt>:
+ *    a = [:foo, 'bar', 2, 'bar']
+ *    a.index('bar') # => 1
  *
- *  This is an alias of <code>#find_index</code>.
+ *  Returns +nil+ if no such element found.
+ *
+ *  When both argument +object+ and a block are given,
+ *  calls the block with each successive element;
+ *  returns the index of the first element for which the block returns a truthy value:
+ *    a = [:foo, 'bar', 2, 'bar']
+ *    a.index {|element| element == 'bar' } # => 1
+ *
+ *  Returns +nil+ if the block never returns a truthy value.
+ *
+ *  When neither an argument nor a block is given, returns a new Enumerator:
+ *    a = [:foo, 'bar', 2]
+ *    e = a.index
+ *    e # => #<Enumerator: [:foo, "bar", 2]:index>
+ *    e.each {|element| element == 'bar' } # => 1
+ *
+ *  Array#find_index is an alias for Array#index.
+ *
+ *  Related: #rindex.
  */
 
 static VALUE
@@ -1106,62 +2043,88 @@ rb_ary_index(int argc, VALUE *argv, VALUE ary)
     VALUE val;
     long i;
 
-    if (argc  == 0) {
+    if (argc == 0) {
 	RETURN_ENUMERATOR(ary, 0, 0);
 	for (i=0; i<RARRAY_LEN(ary); i++) {
-	    if (RTEST(rb_yield(RARRAY_PTR(ary)[i]))) {
+	    if (RTEST(rb_yield(RARRAY_AREF(ary, i)))) {
 		return LONG2NUM(i);
 	    }
 	}
 	return Qnil;
     }
-    rb_scan_args(argc, argv, "01", &val);
+    rb_check_arity(argc, 0, 1);
+    val = argv[0];
+    if (rb_block_given_p())
+	rb_warn("given block not used");
     for (i=0; i<RARRAY_LEN(ary); i++) {
-	if (rb_equal(RARRAY_PTR(ary)[i], val))
+	VALUE e = RARRAY_AREF(ary, i);
+	if (rb_equal(e, val)) {
 	    return LONG2NUM(i);
+	}
     }
     return Qnil;
 }
 
 /*
  *  call-seq:
- *     array.rindex(obj)    ->  int or nil
- *  
- *  Returns the index of the last object in <i>array</i>
- *  <code>==</code> to <i>obj</i>. If a block is given instead of an
- *  argument, returns first object for which <em>block</em> is
- *  true. Returns <code>nil</code> if no match is found.
- *     
- *     a = [ "a", "b", "b", "b", "c" ]
- *     a.rindex("b")        #=> 3
- *     a.rindex("z")        #=> nil
- *     a.rindex{|x|x=="b"}  #=> 3
+ *    array.rindex(object) -> integer or nil
+ *    array.rindex {|element| ... } -> integer or nil
+ *    array.rindex -> new_enumerator
+ *
+ *  Returns the index of the last element for which <tt>object == element</tt>.
+ *
+ *  When argument +object+ is given but no block, returns the index of the last such element found:
+ *    a = [:foo, 'bar', 2, 'bar']
+ *    a.rindex('bar') # => 3
+ *
+ *  Returns +nil+ if no such object found.
+ *
+ *  When a block is given but no argument, calls the block with each successive element;
+ *  returns the index of the last element for which the block returns a truthy value:
+ *    a = [:foo, 'bar', 2, 'bar']
+ *    a.rindex {|element| element == 'bar' } # => 3
+ *
+ *  Returns +nil+ if the block never returns a truthy value.
+ *
+ *  When neither an argument nor a block is given, returns a new \Enumerator:
+ *
+ *    a = [:foo, 'bar', 2, 'bar']
+ *    e = a.rindex
+ *    e # => #<Enumerator: [:foo, "bar", 2, "bar"]:rindex>
+ *    e.each {|element| element == 'bar' } # => 3
+ *
+ *  Related: #index.
  */
 
 static VALUE
 rb_ary_rindex(int argc, VALUE *argv, VALUE ary)
 {
     VALUE val;
-    long i = RARRAY_LEN(ary);
+    long i = RARRAY_LEN(ary), len;
 
     if (argc == 0) {
 	RETURN_ENUMERATOR(ary, 0, 0);
 	while (i--) {
-	    if (RTEST(rb_yield(RARRAY_PTR(ary)[i])))
+	    if (RTEST(rb_yield(RARRAY_AREF(ary, i))))
 		return LONG2NUM(i);
-	    if (i > RARRAY_LEN(ary)) {
-		i = RARRAY_LEN(ary);
+	    if (i > (len = RARRAY_LEN(ary))) {
+		i = len;
 	    }
 	}
 	return Qnil;
     }
-    rb_scan_args(argc, argv, "01", &val);
+    rb_check_arity(argc, 0, 1);
+    val = argv[0];
+    if (rb_block_given_p())
+	rb_warn("given block not used");
     while (i--) {
-	if (rb_equal(RARRAY_PTR(ary)[i], val))
+	VALUE e = RARRAY_AREF(ary, i);
+	if (rb_equal(e, val)) {
 	    return LONG2NUM(i);
-	if (i > RARRAY_LEN(ary)) {
-	    i = RARRAY_LEN(ary);
 	}
+        if (i > RARRAY_LEN(ary)) {
+            break;
+        }
     }
     return Qnil;
 }
@@ -1169,99 +2132,257 @@ rb_ary_rindex(int argc, VALUE *argv, VALUE ary)
 VALUE
 rb_ary_to_ary(VALUE obj)
 {
-    if (TYPE(obj) == T_ARRAY) {
-	return obj;
-    }
-    if (rb_respond_to(obj, rb_intern("to_ary"))) {
-	return to_ary(obj);
-    }
+    VALUE tmp = rb_check_array_type(obj);
+
+    if (!NIL_P(tmp)) return tmp;
     return rb_ary_new3(1, obj);
 }
 
 static void
-rb_ary_splice(VALUE ary, long beg, long len, VALUE rpl)
+rb_ary_splice(VALUE ary, long beg, long len, const VALUE *rptr, long rlen)
 {
-    long rlen;
+    long olen;
+    long rofs;
 
     if (len < 0) rb_raise(rb_eIndexError, "negative length (%ld)", len);
+    olen = RARRAY_LEN(ary);
     if (beg < 0) {
-	beg += RARRAY_LEN(ary);
+	beg += olen;
 	if (beg < 0) {
-	    beg -= RARRAY_LEN(ary);
-	    rb_raise(rb_eIndexError, "index %ld out of array", beg);
+	    rb_raise(rb_eIndexError, "index %ld too small for array; minimum: %ld",
+		     beg - olen, -olen);
 	}
     }
-    if (RARRAY_LEN(ary) < len || RARRAY_LEN(ary) < beg + len) {
-	len = RARRAY_LEN(ary) - beg;
+    if (olen < len || olen < beg + len) {
+	len = olen - beg;
     }
 
-    if (rpl == Qundef) {
-	rlen = 0;
-    }
-    else {
-	rpl = rb_ary_to_ary(rpl);
-	rlen = RARRAY_LEN(rpl);
+    {
+        const VALUE *optr = RARRAY_CONST_PTR_TRANSIENT(ary);
+	rofs = (rptr >= optr && rptr < optr + olen) ? rptr - optr : -1;
     }
-    rb_ary_modify(ary);
-    if (beg >= RARRAY_LEN(ary)) {
+
+    if (beg >= olen) {
+	VALUE target_ary;
 	if (beg > ARY_MAX_SIZE - rlen) {
 	    rb_raise(rb_eIndexError, "index %ld too big", beg);
 	}
+	target_ary = ary_ensure_room_for_push(ary, rlen-len); /* len is 0 or negative */
 	len = beg + rlen;
-	if (len >= ARY_CAPA(ary)) {
-	    ary_resize_capa(ary, len);
-	}
-	rb_mem_clear(RARRAY_PTR(ary) + RARRAY_LEN(ary), beg - RARRAY_LEN(ary));
+	ary_mem_clear(ary, olen, beg - olen);
 	if (rlen > 0) {
-	    MEMCPY(RARRAY_PTR(ary) + beg, RARRAY_PTR(rpl), VALUE, rlen);
+            if (rofs != -1) rptr = RARRAY_CONST_PTR_TRANSIENT(ary) + rofs;
+	    ary_memcpy0(ary, beg, rlen, rptr, target_ary);
 	}
 	ARY_SET_LEN(ary, len);
     }
     else {
 	long alen;
 
-	alen = RARRAY_LEN(ary) + rlen - len;
+	if (olen - len > ARY_MAX_SIZE - rlen) {
+	    rb_raise(rb_eIndexError, "index %ld too big", olen + rlen - len);
+	}
+	rb_ary_modify(ary);
+	alen = olen + rlen - len;
 	if (alen >= ARY_CAPA(ary)) {
-	    ary_resize_capa(ary, alen);
+	    ary_double_capa(ary, alen);
 	}
 
 	if (len != rlen) {
-	    MEMMOVE(RARRAY_PTR(ary) + beg + rlen, RARRAY_PTR(ary) + beg + len,
-		    VALUE, RARRAY_LEN(ary) - (beg + len));
+            RARRAY_PTR_USE_TRANSIENT(ary, ptr,
+                                     MEMMOVE(ptr + beg + rlen, ptr + beg + len,
+                                             VALUE, olen - (beg + len)));
 	    ARY_SET_LEN(ary, alen);
 	}
 	if (rlen > 0) {
-	    MEMMOVE(RARRAY_PTR(ary) + beg, RARRAY_PTR(rpl), VALUE, rlen);
+            if (rofs != -1) rptr = RARRAY_CONST_PTR_TRANSIENT(ary) + rofs;
+            /* give up wb-protected ary */
+            RB_OBJ_WB_UNPROTECT_FOR(ARRAY, ary);
+
+            /* do not use RARRAY_PTR() because it can causes GC.
+             * ary can contain T_NONE object because it is not cleared.
+             */
+            RARRAY_PTR_USE_TRANSIENT(ary, ptr,
+                                     MEMMOVE(ptr + beg, rptr, VALUE, rlen));
+	}
+    }
+}
+
+void
+rb_ary_set_len(VALUE ary, long len)
+{
+    long capa;
+
+    rb_ary_modify_check(ary);
+    if (ARY_SHARED_P(ary)) {
+	rb_raise(rb_eRuntimeError, "can't set length of shared ");
+    }
+    if (len > (capa = (long)ARY_CAPA(ary))) {
+	rb_bug("probable buffer overflow: %ld for %ld", len, capa);
+    }
+    ARY_SET_LEN(ary, len);
+}
+
+/*!
+ * expands or shrinks \a ary to \a len elements.
+ * expanded region will be filled with Qnil.
+ * \param ary  an array
+ * \param len  new size
+ * \return     \a ary
+ * \post       the size of \a ary is \a len.
+ */
+VALUE
+rb_ary_resize(VALUE ary, long len)
+{
+    long olen;
+
+    rb_ary_modify(ary);
+    olen = RARRAY_LEN(ary);
+    if (len == olen) return ary;
+    if (len > ARY_MAX_SIZE) {
+	rb_raise(rb_eIndexError, "index %ld too big", len);
+    }
+    if (len > olen) {
+	if (len >= ARY_CAPA(ary)) {
+	    ary_double_capa(ary, len);
+	}
+	ary_mem_clear(ary, olen, len - olen);
+	ARY_SET_LEN(ary, len);
+    }
+    else if (ARY_EMBED_P(ary)) {
+        ARY_SET_EMBED_LEN(ary, len);
+    }
+    else if (len <= RARRAY_EMBED_LEN_MAX) {
+	VALUE tmp[RARRAY_EMBED_LEN_MAX];
+	MEMCPY(tmp, ARY_HEAP_PTR(ary), VALUE, len);
+	ary_discard(ary);
+	MEMCPY((VALUE *)ARY_EMBED_PTR(ary), tmp, VALUE, len); /* WB: no new reference */
+        ARY_SET_EMBED_LEN(ary, len);
+    }
+    else {
+	if (olen > len + ARY_DEFAULT_SIZE) {
+            ary_heap_realloc(ary, len);
+	    ARY_SET_CAPA(ary, len);
 	}
+	ARY_SET_HEAP_LEN(ary, len);
     }
+    ary_verify(ary);
+    return ary;
 }
 
-/* 
+static VALUE
+ary_aset_by_rb_ary_store(VALUE ary, long key, VALUE val)
+{
+    rb_ary_store(ary, key, val);
+    return val;
+}
+
+static VALUE
+ary_aset_by_rb_ary_splice(VALUE ary, long beg, long len, VALUE val)
+{
+    VALUE rpl = rb_ary_to_ary(val);
+    rb_ary_splice(ary, beg, len, RARRAY_CONST_PTR_TRANSIENT(rpl), RARRAY_LEN(rpl));
+    RB_GC_GUARD(rpl);
+    return val;
+}
+
+/*
  *  call-seq:
- *     array[index]         = obj                     ->  obj
- *     array[start, length] = obj or an_array or nil  ->  obj or an_array or nil
- *     array[range]         = obj or an_array or nil  ->  obj or an_array or nil
+ *    array[index] = object -> object
+ *    array[start, length] = object -> object
+ *    array[range] = object -> object
+ *
+ *  Assigns elements in +self+; returns the given +object+.
  *
- *  Element Assignment---Sets the element at _index_,
- *  or replaces a subarray starting at _start_ and
- *  continuing for _length_ elements, or replaces a subarray
- *  specified by _range_.  If indices are greater than
- *  the current capacity of the array, the array grows
- *  automatically. A negative indices will count backward
- *  from the end of the array. Inserts elements if _length_ is
- *  zero. An +IndexError+ is raised if a negative index points
- *  past the beginning of the array. See also
- *  <code>Array#push</code>, and <code>Array#unshift</code>.
- * 
- *     a = Array.new
- *     a[4] = "4";                 #=> [nil, nil, nil, nil, "4"]
- *     a[0, 3] = [ 'a', 'b', 'c' ] #=> ["a", "b", "c", nil, "4"]
- *     a[1..2] = [ 1, 2 ]          #=> ["a", 1, 2, nil, "4"]
- *     a[0, 2] = "?"               #=> ["?", 2, nil, "4"]
- *     a[0..2] = "A"               #=> ["A", "4"]
- *     a[-1]   = "Z"               #=> ["A", "Z"]
- *     a[1..-1] = nil              #=> ["A", nil]
- *     a[1..-1] = []               #=> ["A"]
+ *  When \Integer argument +index+ is given, assigns +object+ to an element in +self+.
+ *
+ *  If +index+ is non-negative, assigns +object+ the element at offset +index+:
+ *    a = [:foo, 'bar', 2]
+ *    a[0] = 'foo' # => "foo"
+ *    a # => ["foo", "bar", 2]
+ *
+ *  If +index+ is greater than <tt>self.length</tt>, extends the array:
+ *    a = [:foo, 'bar', 2]
+ *    a[7] = 'foo' # => "foo"
+ *    a # => [:foo, "bar", 2, nil, nil, nil, nil, "foo"]
+ *
+ *  If +index+ is negative, counts backwards from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a[-1] = 'two' # => "two"
+ *    a # => [:foo, "bar", "two"]
+ *
+ *  When \Integer arguments +start+ and +length+ are given and +object+ is not an \Array,
+ *  removes <tt>length - 1</tt> elements beginning at offset +start+,
+ *  and assigns +object+ at offset +start+:
+ *    a = [:foo, 'bar', 2]
+ *    a[0, 2] = 'foo' # => "foo"
+ *    a # => ["foo", 2]
+ *
+ *  If +start+ is negative, counts backwards from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a[-2, 2] = 'foo' # => "foo"
+ *    a # => [:foo, "foo"]
+ *
+ *  If +start+ is non-negative and outside the array (<tt> >= self.size</tt>),
+ *  extends the array with +nil+, assigns +object+ at offset +start+,
+ *  and ignores +length+:
+ *    a = [:foo, 'bar', 2]
+ *    a[6, 50] = 'foo' # => "foo"
+ *    a # => [:foo, "bar", 2, nil, nil, nil, "foo"]
+ *
+ *  If +length+ is zero, shifts elements at and following offset +start+
+ *  and assigns +object+ at offset +start+:
+ *    a = [:foo, 'bar', 2]
+ *    a[1, 0] = 'foo' # => "foo"
+ *    a # => [:foo, "foo", "bar", 2]
+ *
+ *  If +length+ is too large for the existing array, does not extend the array:
+ *    a = [:foo, 'bar', 2]
+ *    a[1, 5] = 'foo' # => "foo"
+ *    a # => [:foo, "foo"]
+ *
+ *  When \Range argument +range+ is given and +object+ is an \Array,
+ *  removes <tt>length - 1</tt> elements beginning at offset +start+,
+ *  and assigns +object+ at offset +start+:
+ *    a = [:foo, 'bar', 2]
+ *    a[0..1] = 'foo' # => "foo"
+ *    a # => ["foo", 2]
+ *
+ *  if <tt>range.begin</tt> is negative, counts backwards from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a[-2..2] = 'foo' # => "foo"
+ *    a # => [:foo, "foo"]
+ *
+ *  If the array length is less than <tt>range.begin</tt>,
+ *  assigns +object+ at offset <tt>range.begin</tt>, and ignores +length+:
+ *    a = [:foo, 'bar', 2]
+ *    a[6..50] = 'foo' # => "foo"
+ *    a # => [:foo, "bar", 2, nil, nil, nil, "foo"]
+ *
+ *  If <tt>range.end</tt> is zero, shifts elements at and following offset +start+
+ *  and assigns +object+ at offset +start+:
+ *    a = [:foo, 'bar', 2]
+ *    a[1..0] = 'foo' # => "foo"
+ *    a # => [:foo, "foo", "bar", 2]
+ *
+ *  If <tt>range.end</tt> is negative, assigns +object+ at offset +start+,
+ *  retains <tt>range.end.abs -1</tt> elements past that, and removes those beyond:
+ *    a = [:foo, 'bar', 2]
+ *    a[1..-1] = 'foo' # => "foo"
+ *    a # => [:foo, "foo"]
+ *    a = [:foo, 'bar', 2]
+ *    a[1..-2] = 'foo' # => "foo"
+ *    a # => [:foo, "foo", 2]
+ *    a = [:foo, 'bar', 2]
+ *    a[1..-3] = 'foo' # => "foo"
+ *    a # => [:foo, "foo", "bar", 2]
+ *    a = [:foo, 'bar', 2]
+ *
+ *  If <tt>range.end</tt> is too large for the existing array,
+ *  replaces array elements, but does not extend the array with +nil+ values:
+ *    a = [:foo, 'bar', 2]
+ *    a[1..5] = 'foo' # => "foo"
+ *    a # => [:foo, "foo"]
  */
 
 static VALUE
@@ -1269,41 +2390,55 @@ rb_ary_aset(int argc, VALUE *argv, VALUE ary)
 {
     long offset, beg, len;
 
+    rb_check_arity(argc, 2, 3);
+    rb_ary_modify_check(ary);
     if (argc == 3) {
 	beg = NUM2LONG(argv[0]);
 	len = NUM2LONG(argv[1]);
-	rb_ary_splice(ary, beg, len, argv[2]);
-	return argv[2];
-    }
-    if (argc != 2) {
-	rb_raise(rb_eArgError, "wrong number of arguments (%d for 2)", argc);
+        return ary_aset_by_rb_ary_splice(ary, beg, len, argv[2]);
     }
     if (FIXNUM_P(argv[0])) {
 	offset = FIX2LONG(argv[0]);
-	goto fixnum;
+        return ary_aset_by_rb_ary_store(ary, offset, argv[1]);
     }
     if (rb_range_beg_len(argv[0], &beg, &len, RARRAY_LEN(ary), 1)) {
 	/* check if idx is Range */
-	rb_ary_splice(ary, beg, len, argv[1]);
-	return argv[1];
+        return ary_aset_by_rb_ary_splice(ary, beg, len, argv[1]);
     }
 
     offset = NUM2LONG(argv[0]);
-fixnum:
-    rb_ary_store(ary, offset, argv[1]);
-    return argv[1];
+    return ary_aset_by_rb_ary_store(ary, offset, argv[1]);
 }
 
 /*
  *  call-seq:
- *     array.insert(index, obj...)  -> array
- *  
- *  Inserts the given values before the element with the given index
- *  (which may be negative).
- *     
- *     a = %w{ a b c d }
- *     a.insert(2, 99)         #=> ["a", "b", 99, "c", "d"]
- *     a.insert(-2, 1, 2, 3)   #=> ["a", "b", 99, "c", 1, 2, 3, "d"]
+ *    array.insert(index, *objects) -> self
+ *
+ *  Inserts given +objects+ before or after the element at \Integer index +offset+;
+ *  returns +self+.
+ *
+ *  When +index+ is non-negative, inserts all given +objects+
+ *  before the element at offset +index+:
+ *    a = [:foo, 'bar', 2]
+ *    a.insert(1, :bat, :bam) # => [:foo, :bat, :bam, "bar", 2]
+ *
+ *  Extends the array if +index+ is beyond the array (<tt>index >= self.size</tt>):
+ *    a = [:foo, 'bar', 2]
+ *    a.insert(5, :bat, :bam)
+ *    a # => [:foo, "bar", 2, nil, nil, :bat, :bam]
+ *
+ *  Does nothing if no objects given:
+ *    a = [:foo, 'bar', 2]
+ *    a.insert(1)
+ *    a.insert(50)
+ *    a.insert(-50)
+ *    a # => [:foo, "bar", 2]
+ *
+ *  When +index+ is negative, inserts all given +objects+
+ *  _after_ the element at offset <tt>index+self.size</tt>:
+ *    a = [:foo, 'bar', 2]
+ *    a.insert(-2, :bat, :bam)
+ *    a # => [:foo, "bar", :bat, :bam, 2]
  */
 
 static VALUE
@@ -1311,68 +2446,129 @@ rb_ary_insert(int argc, VALUE *argv, VALUE ary)
 {
     long pos;
 
-    if (argc == 1) return ary;
-    if (argc < 1) {
-	rb_raise(rb_eArgError, "wrong number of arguments (at least 1)");
-    }
+    rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
+    rb_ary_modify_check(ary);
     pos = NUM2LONG(argv[0]);
+    if (argc == 1) return ary;
     if (pos == -1) {
 	pos = RARRAY_LEN(ary);
     }
-    if (pos < 0) {
+    else if (pos < 0) {
+	long minpos = -RARRAY_LEN(ary) - 1;
+	if (pos < minpos) {
+	    rb_raise(rb_eIndexError, "index %ld too small for array; minimum: %ld",
+		     pos, minpos);
+	}
 	pos++;
     }
-    rb_ary_splice(ary, pos, 0, rb_ary_new4(argc - 1, argv + 1));
+    rb_ary_splice(ary, pos, 0, argv + 1, argc - 1);
     return ary;
 }
 
+static VALUE
+rb_ary_length(VALUE ary);
+
+static VALUE
+ary_enum_length(VALUE ary, VALUE args, VALUE eobj)
+{
+    return rb_ary_length(ary);
+}
+
 /*
  *  call-seq:
- *     array.each {|item| block }   ->   array
- *  
- *  Calls <i>block</i> once for each element in <i>self</i>, passing that
- *  element as a parameter.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.each {|x| print x, " -- " }
- *     
- *  produces:
- *     
- *     a -- b -- c --
+ *    array.each {|element| ... } -> self
+ *    array.each -> Enumerator
+ *
+ *  Iterates over array elements.
+ *
+ *  When a block given, passes each successive array element to the block;
+ *  returns +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.each {|element|  puts "#{element.class} #{element}" }
+ *
+ *  Output:
+ *    Symbol foo
+ *    String bar
+ *    Integer 2
+ *
+ *  Allows the array to be modified during iteration:
+ *    a = [:foo, 'bar', 2]
+ *    a.each {|element| puts element; a.clear if element.to_s.start_with?('b') }
+ *
+ *  Output:
+ *    foo
+ *    bar
+ *
+ *  When no block given, returns a new \Enumerator:
+ *    a = [:foo, 'bar', 2]
+ *    e = a.each
+ *    e # => #<Enumerator: [:foo, "bar", 2]:each>
+ *    a1 = e.each {|element|  puts "#{element.class} #{element}" }
+ *
+ *  Output:
+ *    Symbol foo
+ *    String bar
+ *    Integer 2
+ *
+ *  Related: #each_index, #reverse_each.
  */
 
 VALUE
 rb_ary_each(VALUE ary)
 {
     long i;
-
-    RETURN_ENUMERATOR(ary, 0, 0);
+    ary_verify(ary);
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
     for (i=0; i<RARRAY_LEN(ary); i++) {
-	rb_yield(RARRAY_PTR(ary)[i]);
+	rb_yield(RARRAY_AREF(ary, i));
     }
     return ary;
 }
 
 /*
  *  call-seq:
- *     array.each_index {|index| block }  ->  array
- *  
- *  Same as <code>Array#each</code>, but passes the index of the element
- *  instead of the element itself.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.each_index {|x| print x, " -- " }
- *     
- *  produces:
- *     
- *     0 -- 1 -- 2 --
+ *    array.each_index {|index| ... } -> self
+ *    array.each_index -> Enumerator
+ *
+ *  Iterates over array indexes.
+ *
+ *  When a block given, passes each successive array index to the block;
+ *  returns +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.each_index {|index|  puts "#{index} #{a[index]}" }
+ *
+ *  Output:
+ *    0 foo
+ *    1 bar
+ *    2 2
+ *
+ *  Allows the array to be modified during iteration:
+ *    a = [:foo, 'bar', 2]
+ *    a.each_index {|index| puts index; a.clear if index > 0 }
+ *
+ *  Output:
+ *    0
+ *    1
+ *
+ *  When no block given, returns a new \Enumerator:
+ *    a = [:foo, 'bar', 2]
+ *    e = a.each_index
+ *    e # => #<Enumerator: [:foo, "bar", 2]:each_index>
+ *    a1 = e.each {|index|  puts "#{index} #{a[index]}"}
+ *
+ *  Output:
+ *    0 foo
+ *    1 bar
+ *    2 2
+ *
+ *  Related: #each, #reverse_each.
  */
 
 static VALUE
 rb_ary_each_index(VALUE ary)
 {
     long i;
-    RETURN_ENUMERATOR(ary, 0, 0);
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
 
     for (i=0; i<RARRAY_LEN(ary); i++) {
 	rb_yield(LONG2NUM(i));
@@ -1382,17 +2578,40 @@ rb_ary_each_index(VALUE ary)
 
 /*
  *  call-seq:
- *     array.reverse_each {|item| block } 
- *  
- *  Same as <code>Array#each</code>, but traverses <i>self</i> in reverse
- *  order.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.reverse_each {|x| print x, " " }
- *     
- *  produces:
- *     
- *     c b a
+ *    array.reverse_each {|element| ... } -> self
+ *    array.reverse_each -> Enumerator
+ *
+ *  Iterates backwards over array elements.
+ *
+ *  When a block given, passes, in reverse order, each element to the block;
+ *  returns +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.reverse_each {|element|  puts "#{element.class} #{element}" }
+ *
+ *  Output:
+ *    Integer 2
+ *    String bar
+ *    Symbol foo
+ *
+ *  Allows the array to be modified during iteration:
+ *    a = [:foo, 'bar', 2]
+ *    a.reverse_each {|element| puts element; a.clear if element.to_s.start_with?('b') }
+ *
+ *  Output:
+ *    2
+ *    bar
+ *
+ *  When no block given, returns a new \Enumerator:
+ *    a = [:foo, 'bar', 2]
+ *    e = a.reverse_each
+ *    e # => #<Enumerator: [:foo, "bar", 2]:reverse_each>
+ *    a1 = e.each {|element|  puts "#{element.class} #{element}" }
+ *  Output:
+ *    Integer 2
+ *    String bar
+ *    Symbol foo
+ *
+ *  Related: #each, #each_index.
  */
 
 static VALUE
@@ -1400,12 +2619,14 @@ rb_ary_reverse_each(VALUE ary)
 {
     long len;
 
-    RETURN_ENUMERATOR(ary, 0, 0);
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
     len = RARRAY_LEN(ary);
     while (len--) {
-	rb_yield(RARRAY_PTR(ary)[len]);
-	if (RARRAY_LEN(ary) < len) {
-	    len = RARRAY_LEN(ary);
+	long nlen;
+	rb_yield(RARRAY_AREF(ary, len));
+	nlen = RARRAY_LEN(ary);
+	if (nlen < len) {
+	    len = nlen;
 	}
     }
     return ary;
@@ -1413,11 +2634,9 @@ rb_ary_reverse_each(VALUE ary)
 
 /*
  *  call-seq:
- *     array.length -> int
- *  
- *  Returns the number of elements in <i>self</i>. May be zero.
- *     
- *     [ 1, 2, 3, 4, 5 ].length   #=> 5
+ *    array.length -> an_integer
+ *
+ *  Returns the count of elements in +self+.
  */
 
 static VALUE
@@ -1429,11 +2648,10 @@ rb_ary_length(VALUE ary)
 
 /*
  *  call-seq:
- *     array.empty?   -> true or false
- *  
- *  Returns <code>true</code> if <i>self</i> array contains no elements.
- *     
- *     [].empty?   #=> true
+ *    array.empty?  -> true or false
+ *
+ *  Returns +true+ if the count of elements in +self+ is zero,
+ *  +false+ otherwise.
  */
 
 static VALUE
@@ -1447,132 +2665,222 @@ rb_ary_empty_p(VALUE ary)
 VALUE
 rb_ary_dup(VALUE ary)
 {
-    VALUE dup = rb_ary_new2(RARRAY_LEN(ary));
-    int is_embed = ARY_EMBED_P(dup);
-    DUPSETUP(dup, ary);
-    if (is_embed) FL_SET_EMBED(dup);
-    MEMCPY(RARRAY_PTR(dup), RARRAY_PTR(ary), VALUE, RARRAY_LEN(ary));
-    ARY_SET_LEN(dup, RARRAY_LEN(ary));
+    long len = RARRAY_LEN(ary);
+    VALUE dup = rb_ary_new2(len);
+    ary_memcpy(dup, 0, len, RARRAY_CONST_PTR_TRANSIENT(ary));
+    ARY_SET_LEN(dup, len);
 
+    ary_verify(ary);
+    ary_verify(dup);
     return dup;
 }
 
+VALUE
+rb_ary_resurrect(VALUE ary)
+{
+    return ary_make_partial(ary, rb_cArray, 0, RARRAY_LEN(ary));
+}
+
 extern VALUE rb_output_fs;
 
+static void ary_join_1(VALUE obj, VALUE ary, VALUE sep, long i, VALUE result, int *first);
+
 static VALUE
-recursive_join(VALUE ary, VALUE argp, int recur)
+recursive_join(VALUE obj, VALUE argp, int recur)
 {
     VALUE *arg = (VALUE *)argp;
+    VALUE ary = arg[0];
+    VALUE sep = arg[1];
+    VALUE result = arg[2];
+    int *first = (int *)arg[3];
+
     if (recur) {
-	return rb_usascii_str_new2("[...]");
+	rb_raise(rb_eArgError, "recursive array join");
+    }
+    else {
+	ary_join_1(obj, ary, sep, 0, result, first);
+    }
+    return Qnil;
+}
+
+static long
+ary_join_0(VALUE ary, VALUE sep, long max, VALUE result)
+{
+    long i;
+    VALUE val;
+
+    if (max > 0) rb_enc_copy(result, RARRAY_AREF(ary, 0));
+    for (i=0; i<max; i++) {
+	val = RARRAY_AREF(ary, i);
+        if (!RB_TYPE_P(val, T_STRING)) break;
+	if (i > 0 && !NIL_P(sep))
+	    rb_str_buf_append(result, sep);
+	rb_str_buf_append(result, val);
+    }
+    return i;
+}
+
+static void
+ary_join_1_str(VALUE dst, VALUE src, int *first)
+{
+    rb_str_buf_append(dst, src);
+    if (*first) {
+        rb_enc_copy(dst, src);
+        *first = FALSE;
+    }
+}
+
+static void
+ary_join_1_ary(VALUE obj, VALUE ary, VALUE sep, VALUE result, VALUE val, int *first)
+{
+    if (val == ary) {
+        rb_raise(rb_eArgError, "recursive array join");
+    }
+    else {
+        VALUE args[4];
+
+        *first = FALSE;
+        args[0] = val;
+        args[1] = sep;
+        args[2] = result;
+        args[3] = (VALUE)first;
+        rb_exec_recursive(recursive_join, obj, (VALUE)args);
+    }
+}
+
+static void
+ary_join_1(VALUE obj, VALUE ary, VALUE sep, long i, VALUE result, int *first)
+{
+    VALUE val, tmp;
+
+    for (; i<RARRAY_LEN(ary); i++) {
+	if (i > 0 && !NIL_P(sep))
+	    rb_str_buf_append(result, sep);
+
+	val = RARRAY_AREF(ary, i);
+	if (RB_TYPE_P(val, T_STRING)) {
+            ary_join_1_str(result, val, first);
+	}
+	else if (RB_TYPE_P(val, T_ARRAY)) {
+            ary_join_1_ary(val, ary, sep, result, val, first);
+	}
+        else if (!NIL_P(tmp = rb_check_string_type(val))) {
+            ary_join_1_str(result, tmp, first);
+        }
+        else if (!NIL_P(tmp = rb_check_array_type(val))) {
+            ary_join_1_ary(val, ary, sep, result, tmp, first);
+        }
+        else {
+            ary_join_1_str(result, rb_obj_as_string(val), first);
+	}
     }
-    return rb_ary_join(arg[0], arg[1]);
 }
 
 VALUE
 rb_ary_join(VALUE ary, VALUE sep)
 {
     long len = 1, i;
-    int taint = Qfalse;
-    int untrust = Qfalse;
-    VALUE result, tmp;
+    VALUE val, tmp, result;
 
-    if (RARRAY_LEN(ary) == 0) return rb_str_new(0, 0);
-    if (OBJ_TAINTED(ary) || OBJ_TAINTED(sep)) taint = Qtrue;
-    if (OBJ_UNTRUSTED(ary) || OBJ_UNTRUSTED(sep)) untrust = Qtrue;
+    if (RARRAY_LEN(ary) == 0) return rb_usascii_str_new(0, 0);
 
-    for (i=0; i<RARRAY_LEN(ary); i++) {
-	tmp = rb_check_string_type(RARRAY_PTR(ary)[i]);
-	len += NIL_P(tmp) ? 10 : RSTRING_LEN(tmp);
-    }
     if (!NIL_P(sep)) {
 	StringValue(sep);
 	len += RSTRING_LEN(sep) * (RARRAY_LEN(ary) - 1);
     }
-    result = rb_str_buf_new(len);
     for (i=0; i<RARRAY_LEN(ary); i++) {
-	tmp = RARRAY_PTR(ary)[i];
-	switch (TYPE(tmp)) {
-	  case T_STRING:
-	    break;
-	  case T_ARRAY:
-	    if (tmp == ary) {
-		tmp = rb_usascii_str_new2("[...]");
-	    }
-	    else {
-		VALUE args[2];
-
-		args[0] = tmp;
-		args[1] = sep;
-		tmp = rb_exec_recursive(recursive_join, ary, (VALUE)args);
-	    }
-	    break;
-	  default:
-	    tmp = rb_obj_as_string(tmp);
+	val = RARRAY_AREF(ary, i);
+	tmp = rb_check_string_type(val);
+
+	if (NIL_P(tmp) || tmp != val) {
+	    int first;
+            long n = RARRAY_LEN(ary);
+            if (i > n) i = n;
+            result = rb_str_buf_new(len + (n-i)*10);
+	    rb_enc_associate(result, rb_usascii_encoding());
+            i = ary_join_0(ary, sep, i, result);
+	    first = i == 0;
+	    ary_join_1(ary, ary, sep, i, result, &first);
+	    return result;
 	}
-	if (i > 0 && !NIL_P(sep))
-	    rb_str_buf_append(result, sep);
-	rb_str_buf_append(result, tmp);
-	if (OBJ_TAINTED(tmp)) taint = Qtrue;
-	if (OBJ_UNTRUSTED(tmp)) untrust = Qtrue;
+
+	len += RSTRING_LEN(tmp);
     }
 
-    if (taint) OBJ_TAINT(result);
-    if (untrust) OBJ_UNTRUST(result);
+    result = rb_str_new(0, len);
+    rb_str_set_len(result, 0);
+
+    ary_join_0(ary, sep, RARRAY_LEN(ary), result);
+
     return result;
 }
 
 /*
  *  call-seq:
- *     array.join(sep=$,)    -> str
- *  
- *  Returns a string created by converting each element of the array to
- *  a string, separated by <i>sep</i>.
- *     
- *     [ "a", "b", "c" ].join        #=> "abc"
- *     [ "a", "b", "c" ].join("-")   #=> "a-b-c"
+ *    array.join ->new_string
+ *    array.join(separator = $,) -> new_string
+ *
+ *  Returns the new \String formed by joining the array elements after conversion.
+ *  For each element +element+
+ *  - Uses <tt>element.to_s</tt> if +element+ is not a <tt>kind_of?(Array)</tt>.
+ *  - Uses recursive <tt>element.join(separator)</tt> if +element+ is a <tt>kind_of?(Array)</tt>.
+ *
+ *  With no argument, joins using the output field separator, <tt>$,</tt>:
+ *    a = [:foo, 'bar', 2]
+ *    $, # => nil
+ *    a.join # => "foobar2"
+ *
+ *  With \string argument +separator+, joins using that separator:
+ *    a = [:foo, 'bar', 2]
+ *    a.join("\n") # => "foo\nbar\n2"
+ *
+ *  Joins recursively for nested Arrays:
+ *   a = [:foo, [:bar, [:baz, :bat]]]
+ *   a.join # => "foobarbazbat"
  */
-
 static VALUE
 rb_ary_join_m(int argc, VALUE *argv, VALUE ary)
 {
     VALUE sep;
 
-    rb_scan_args(argc, argv, "01", &sep);
-    if (NIL_P(sep)) sep = rb_output_fs;
-    
+    if (rb_check_arity(argc, 0, 1) == 0 || NIL_P(sep = argv[0])) {
+        sep = rb_output_fs;
+        if (!NIL_P(sep)) {
+            rb_category_warn(RB_WARN_CATEGORY_DEPRECATED, "$, is set to non-nil value");
+        }
+    }
+
     return rb_ary_join(ary, sep);
 }
 
 static VALUE
 inspect_ary(VALUE ary, VALUE dummy, int recur)
 {
-    int tainted = OBJ_TAINTED(ary);
-    int untrust = OBJ_UNTRUSTED(ary);
     long i;
     VALUE s, str;
 
-    if (recur) return rb_tainted_str_new2("[...]");
+    if (recur) return rb_usascii_str_new_cstr("[...]");
     str = rb_str_buf_new2("[");
     for (i=0; i<RARRAY_LEN(ary); i++) {
-	s = rb_inspect(RARRAY_PTR(ary)[i]);
-	if (OBJ_TAINTED(s)) tainted = Qtrue;
-	if (OBJ_UNTRUSTED(s)) untrust = Qtrue;
+	s = rb_inspect(RARRAY_AREF(ary, i));
 	if (i > 0) rb_str_buf_cat2(str, ", ");
+	else rb_enc_copy(str, s);
 	rb_str_buf_append(str, s);
     }
     rb_str_buf_cat2(str, "]");
-    if (tainted) OBJ_TAINT(str);
-    if (untrust) OBJ_UNTRUST(str);
     return str;
 }
 
 /*
  *  call-seq:
- *     array.to_s -> string
- *     array.inspect  -> string
+ *    array.inspect -> new_string
  *
- *  Create a printable version of <i>array</i>.
+ *  Returns the new \String formed by calling method <tt>#inspect</tt>
+ *  on each array element:
+ *    a = [:foo, 'bar', 2]
+ *    a.inspect # => "[:foo, \"bar\", 2]"
+ *
+ *  Array#to_s is an alias for Array#inspect.
  */
 
 static VALUE
@@ -1590,10 +2898,20 @@ rb_ary_to_s(VALUE ary)
 
 /*
  *  call-seq:
- *     array.to_a     -> array
- *  
- *  Returns _self_. If called on a subclass of Array, converts
- *  the receiver to an Array object.
+ *    to_a -> self or new_array
+ *
+ *  When +self+ is an instance of \Array, returns +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.to_a # => [:foo, "bar", 2]
+ *
+ *  Otherwise, returns a new \Array containing the elements of +self+:
+ *    class MyArray < Array; end
+ *    a = MyArray.new(['foo', 'bar', 'two'])
+ *    a.instance_of?(Array) # => false
+ *    a.kind_of?(Array) # => true
+ *    a1 = a.to_a
+ *    a1 # => ["foo", "bar", "two"]
+ *    a1.class # => Array # Not MyArray
  */
 
 static VALUE
@@ -1609,9 +2927,55 @@ rb_ary_to_a(VALUE ary)
 
 /*
  *  call-seq:
- *     array.to_ary -> array
- *  
- *  Returns _self_.
+ *    array.to_h -> new_hash
+ *    array.to_h {|item| ... } -> new_hash
+ *
+ *  Returns a new \Hash formed from +self+.
+ *
+ *  When a block is given, calls the block with each array element;
+ *  the block must return a 2-element \Array whose two elements
+ *  form a key-value pair in the returned \Hash:
+ *    a = ['foo', :bar, 1, [2, 3], {baz: 4}]
+ *    h = a.to_h {|item| [item, item] }
+ *    h # => {"foo"=>"foo", :bar=>:bar, 1=>1, [2, 3]=>[2, 3], {:baz=>4}=>{:baz=>4}}
+ *
+ *  When no block is given, +self+ must be an \Array of 2-element sub-arrays,
+ *  each sub-array is formed into a key-value pair in the new \Hash:
+ *    [].to_h # => {}
+ *    a = [['foo', 'zero'], ['bar', 'one'], ['baz', 'two']]
+ *    h = a.to_h
+ *    h # => {"foo"=>"zero", "bar"=>"one", "baz"=>"two"}
+ */
+
+static VALUE
+rb_ary_to_h(VALUE ary)
+{
+    long i;
+    VALUE hash = rb_hash_new_with_size(RARRAY_LEN(ary));
+    int block_given = rb_block_given_p();
+
+    for (i=0; i<RARRAY_LEN(ary); i++) {
+	const VALUE e = rb_ary_elt(ary, i);
+	const VALUE elt = block_given ? rb_yield_force_blockarg(e) : e;
+	const VALUE key_value_pair = rb_check_array_type(elt);
+	if (NIL_P(key_value_pair)) {
+	    rb_raise(rb_eTypeError, "wrong element type %"PRIsVALUE" at %ld (expected array)",
+		     rb_obj_class(elt), i);
+	}
+	if (RARRAY_LEN(key_value_pair) != 2) {
+	    rb_raise(rb_eArgError, "wrong array length at %ld (expected 2, was %ld)",
+		i, RARRAY_LEN(key_value_pair));
+	}
+	rb_hash_aset(hash, RARRAY_AREF(key_value_pair, 0), RARRAY_AREF(key_value_pair, 1));
+    }
+    return hash;
+}
+
+/*
+ *  call-seq:
+ *    array.to_ary -> self
+ *
+ *  Returns +self+.
  */
 
 static VALUE
@@ -1620,35 +2984,39 @@ rb_ary_to_ary_m(VALUE ary)
     return ary;
 }
 
+static void
+ary_reverse(VALUE *p1, VALUE *p2)
+{
+    while (p1 < p2) {
+	VALUE tmp = *p1;
+	*p1++ = *p2;
+	*p2-- = tmp;
+    }
+}
+
 VALUE
 rb_ary_reverse(VALUE ary)
 {
-    VALUE *p1, *p2;
-    VALUE tmp;
+    VALUE *p2;
+    long len = RARRAY_LEN(ary);
 
     rb_ary_modify(ary);
-    if (RARRAY_LEN(ary) > 1) {
-	p1 = RARRAY_PTR(ary);
-	p2 = p1 + RARRAY_LEN(ary) - 1;	/* points last item */
-
-	while (p1 < p2) {
-	    tmp = *p1;
-	    *p1++ = *p2;
-	    *p2-- = tmp;
-	}
+    if (len > 1) {
+        RARRAY_PTR_USE_TRANSIENT(ary, p1, {
+            p2 = p1 + len - 1;	/* points last item */
+            ary_reverse(p1, p2);
+	}); /* WB: no new reference */
     }
     return ary;
 }
 
 /*
  *  call-seq:
- *     array.reverse!   -> array 
- *  
- *  Reverses _self_ in place.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.reverse!       #=> ["c", "b", "a"]
- *     a                #=> ["c", "b", "a"]
+ *    array.reverse! -> self
+ *
+ *  Reverses +self+ in place:
+ *    a = ['foo', 'bar', 'two']
+ *    a.reverse! # => ["two", "bar", "foo"]
  */
 
 static VALUE
@@ -1659,41 +3027,183 @@ rb_ary_reverse_bang(VALUE ary)
 
 /*
  *  call-seq:
- *     array.reverse -> an_array
- *  
- *  Returns a new array containing <i>self</i>'s elements in reverse order.
- *     
- *     [ "a", "b", "c" ].reverse   #=> ["c", "b", "a"]
- *     [ 1 ].reverse               #=> [1]
+ *    array.reverse -> new_array
+ *
+ *  Returns a new \Array with the elements of +self+ in reverse order.
+ *    a = ['foo', 'bar', 'two']
+ *    a1 = a.reverse
+ *    a1 # => ["two", "bar", "foo"]
  */
 
 static VALUE
 rb_ary_reverse_m(VALUE ary)
 {
-    return rb_ary_reverse(rb_ary_dup(ary));
+    long len = RARRAY_LEN(ary);
+    VALUE dup = rb_ary_new2(len);
+
+    if (len > 0) {
+        const VALUE *p1 = RARRAY_CONST_PTR_TRANSIENT(ary);
+        VALUE *p2 = (VALUE *)RARRAY_CONST_PTR_TRANSIENT(dup) + len - 1;
+	do *p2-- = *p1++; while (--len > 0);
+    }
+    ARY_SET_LEN(dup, RARRAY_LEN(ary));
+    return dup;
 }
 
-struct ary_sort_data {
-    VALUE ary;
-    int opt_methods;
-    int opt_inited;
-};
+static inline long
+rotate_count(long cnt, long len)
+{
+    return (cnt < 0) ? (len - (~cnt % len) - 1) : (cnt % len);
+}
 
-enum {
-    sort_opt_Fixnum,
-    sort_opt_String,
-    sort_optimizable_count
-};
+static void
+ary_rotate_ptr(VALUE *ptr, long len, long cnt)
+{
+    if (cnt == 1) {
+        VALUE tmp = *ptr;
+        memmove(ptr, ptr + 1, sizeof(VALUE)*(len - 1));
+        *(ptr + len - 1) = tmp;
+    } else if (cnt == len - 1) {
+        VALUE tmp = *(ptr + len - 1);
+        memmove(ptr + 1, ptr, sizeof(VALUE)*(len - 1));
+        *ptr = tmp;
+    } else {
+        --len;
+        if (cnt < len) ary_reverse(ptr + cnt, ptr + len);
+        if (--cnt > 0) ary_reverse(ptr, ptr + cnt);
+        if (len > 0) ary_reverse(ptr, ptr + len);
+    }
+}
 
-#define STRING_P(s) (TYPE(s) == T_STRING && CLASS_OF(s) == rb_cString)
+VALUE
+rb_ary_rotate(VALUE ary, long cnt)
+{
+    rb_ary_modify(ary);
 
-#define SORT_OPTIMIZABLE_BIT(type) (1U << TOKEN_PASTE(sort_opt_,type))
-#define SORT_OPTIMIZABLE(data, type) \
-    ((data->opt_inited & SORT_OPTIMIZABLE_BIT(type)) ? \
-     (data->opt_methods & SORT_OPTIMIZABLE_BIT(type)) : \
-     ((data->opt_inited |= SORT_OPTIMIZABLE_BIT(type)), \
-      rb_method_basic_definition_p(TOKEN_PASTE(rb_c,type), id_cmp) && \
-      (data->opt_methods |= SORT_OPTIMIZABLE_BIT(type))))
+    if (cnt != 0) {
+        long len = RARRAY_LEN(ary);
+        if (len > 1 && (cnt = rotate_count(cnt, len)) > 0) {
+            RARRAY_PTR_USE_TRANSIENT(ary, ptr, ary_rotate_ptr(ptr, len, cnt));
+            return ary;
+        }
+    }
+    return Qnil;
+}
+
+/*
+ *  call-seq:
+ *    array.rotate! -> self
+ *    array.rotate!(count) -> self
+ *
+ *  Rotates +self+ in place by moving elements from one end to the other; returns +self+.
+ *
+ *  When no argument given, rotates the first element to the last position:
+ *    a = [:foo, 'bar', 2, 'bar']
+ *    a.rotate! # => ["bar", 2, "bar", :foo]
+ *
+ *  When given a non-negative \Integer +count+,
+ *  rotates +count+ elements from the beginning to the end:
+ *    a = [:foo, 'bar', 2]
+ *    a.rotate!(2)
+ *    a # => [2, :foo, "bar"]
+ *
+ *  If +count+ is large, uses <tt>count % array.size</tt> as the count:
+ *    a = [:foo, 'bar', 2]
+ *    a.rotate!(20)
+ *    a # => [2, :foo, "bar"]
+ *
+ *  If +count+ is zero, returns +self+ unmodified:
+ *    a = [:foo, 'bar', 2]
+ *    a.rotate!(0)
+ *    a # => [:foo, "bar", 2]
+ *
+ *  When given a negative Integer +count+, rotates in the opposite direction,
+ *  from end to beginning:
+ *    a = [:foo, 'bar', 2]
+ *    a.rotate!(-2)
+ *    a # => ["bar", 2, :foo]
+ *
+ *  If +count+ is small (far from zero), uses <tt>count % array.size</tt> as the count:
+ *    a = [:foo, 'bar', 2]
+ *    a.rotate!(-5)
+ *    a # => ["bar", 2, :foo]
+ */
+
+static VALUE
+rb_ary_rotate_bang(int argc, VALUE *argv, VALUE ary)
+{
+    long n = (rb_check_arity(argc, 0, 1) ? NUM2LONG(argv[0]) : 1);
+    rb_ary_rotate(ary, n);
+    return ary;
+}
+
+/*
+ *  call-seq:
+ *    array.rotate -> new_array
+ *    array.rotate(count) -> new_array
+ *
+ *  Returns a new \Array formed from +self+ with elements
+ *  rotated from one end to the other.
+ *
+ *  When no argument given, returns a new \Array that is like +self+,
+ *  except that the first element has been rotated to the last position:
+ *    a = [:foo, 'bar', 2, 'bar']
+ *    a1 = a.rotate
+ *    a1 # => ["bar", 2, "bar", :foo]
+ *
+ *  When given a non-negative \Integer +count+,
+ *  returns a new \Array with +count+ elements rotated from the beginning to the end:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.rotate(2)
+ *    a1 # => [2, :foo, "bar"]
+ *
+ *  If +count+ is large, uses <tt>count % array.size</tt> as the count:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.rotate(20)
+ *    a1 # => [2, :foo, "bar"]
+ *
+ *  If +count+ is zero, returns a copy of +self+, unmodified:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.rotate(0)
+ *    a1 # => [:foo, "bar", 2]
+ *
+ *  When given a negative \Integer +count+, rotates in the opposite direction,
+ *  from end to beginning:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.rotate(-2)
+ *    a1 # => ["bar", 2, :foo]
+ *
+ *  If +count+ is small (far from zero), uses <tt>count % array.size</tt> as the count:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.rotate(-5)
+ *    a1 # => ["bar", 2, :foo]
+ */
+
+static VALUE
+rb_ary_rotate_m(int argc, VALUE *argv, VALUE ary)
+{
+    VALUE rotated;
+    const VALUE *ptr;
+    long len;
+    long cnt = (rb_check_arity(argc, 0, 1) ? NUM2LONG(argv[0]) : 1);
+
+    len = RARRAY_LEN(ary);
+    rotated = rb_ary_new2(len);
+    if (len > 0) {
+	cnt = rotate_count(cnt, len);
+        ptr = RARRAY_CONST_PTR_TRANSIENT(ary);
+	len -= cnt;
+	ary_memcpy(rotated, 0, len, ptr + cnt);
+	ary_memcpy(rotated, len, cnt, ptr);
+    }
+    ARY_SET_LEN(rotated, RARRAY_LEN(ary));
+    return rotated;
+}
+
+struct ary_sort_data {
+    VALUE ary;
+    struct cmp_opt_data cmp_opt;
+};
 
 static VALUE
 sort_reentered(VALUE ary)
@@ -1710,9 +3220,12 @@ sort_1(const void *ap, const void *bp, void *dummy)
     struct ary_sort_data *data = dummy;
     VALUE retval = sort_reentered(data->ary);
     VALUE a = *(const VALUE *)ap, b = *(const VALUE *)bp;
+    VALUE args[2];
     int n;
 
-    retval = rb_yield_values(2, a, b);
+    args[0] = a;
+    args[1] = b;
+    retval = rb_yield_values2(2, args);
     n = rb_cmpint(retval, a, b);
     sort_reentered(data->ary);
     return n;
@@ -1726,16 +3239,19 @@ sort_2(const void *ap, const void *bp, void *dummy)
     VALUE a = *(const VALUE *)ap, b = *(const VALUE *)bp;
     int n;
 
-    if (FIXNUM_P(a) && FIXNUM_P(b) && SORT_OPTIMIZABLE(data, Fixnum)) {
+    if (FIXNUM_P(a) && FIXNUM_P(b) && CMP_OPTIMIZABLE(data->cmp_opt, Integer)) {
 	if ((long)a > (long)b) return 1;
 	if ((long)a < (long)b) return -1;
 	return 0;
     }
-    if (STRING_P(a) && STRING_P(b) && SORT_OPTIMIZABLE(data, String)) {
+    if (STRING_P(a) && STRING_P(b) && CMP_OPTIMIZABLE(data->cmp_opt, String)) {
 	return rb_str_cmp(a, b);
     }
+    if (RB_FLOAT_TYPE_P(a) && CMP_OPTIMIZABLE(data->cmp_opt, Float)) {
+	return rb_float_cmp(a, b);
+    }
 
-    retval = rb_funcall(a, id_cmp, 1, b);
+    retval = rb_funcallv(a, id_cmp, 1, &b);
     n = rb_cmpint(retval, a, b);
     sort_reentered(data->ary);
 
@@ -1744,18 +3260,38 @@ sort_2(const void *ap, const void *bp, void *dummy)
 
 /*
  *  call-seq:
- *     array.sort!                   -> array
- *     array.sort! {| a,b | block }  -> array 
- *  
- *  Sorts _self_. Comparisons for
- *  the sort will be done using the <code><=></code> operator or using
- *  an optional code block. The block implements a comparison between
- *  <i>a</i> and <i>b</i>, returning -1, 0, or +1. See also
- *  <code>Enumerable#sort_by</code>.
- *     
- *     a = [ "d", "a", "e", "c", "b" ]
- *     a.sort                    #=> ["a", "b", "c", "d", "e"]
- *     a.sort {|x,y| y <=> x }   #=> ["e", "d", "c", "b", "a"]
+ *    array.sort! -> self
+ *    array.sort! {|a, b| ... } -> self
+ *
+ *  Returns +self+ with its elements sorted in place.
+ *
+ *  With no block, compares elements using operator <tt><=></tt>
+ *  (see Comparable):
+ *    a = 'abcde'.split('').shuffle
+ *    a # => ["e", "b", "d", "a", "c"]
+ *    a.sort!
+ *    a # => ["a", "b", "c", "d", "e"]
+ *
+ *  With a block, calls the block with each element pair;
+ *  for each element pair +a+ and +b+, the block should return an integer:
+ *  - Negative when +b+ is to follow +a+.
+ *  - Zero when +a+ and +b+ are equivalent.
+ *  - Positive when +a+ is to follow +b+.
+ *
+ *  Example:
+ *    a = 'abcde'.split('').shuffle
+ *    a # => ["e", "b", "d", "a", "c"]
+ *    a.sort! {|a, b| a <=> b }
+ *    a # => ["a", "b", "c", "d", "e"]
+ *    a.sort! {|a, b| b <=> a }
+ *    a # => ["e", "d", "c", "b", "a"]
+ *
+ *  When the block returns zero, the order for +a+ and +b+ is indeterminate,
+ *  and may be unstable:
+ *    a = 'abcde'.split('').shuffle
+ *    a # => ["e", "b", "d", "a", "c"]
+ *    a.sort! {|a, b| 0 }
+ *    a # => ["d", "e", "c", "a", "b"]
  */
 
 VALUE
@@ -1766,29 +3302,28 @@ rb_ary_sort_bang(VALUE ary)
     if (RARRAY_LEN(ary) > 1) {
 	VALUE tmp = ary_make_substitution(ary); /* only ary refers tmp */
 	struct ary_sort_data data;
-
-	RBASIC(tmp)->klass = 0;
+	long len = RARRAY_LEN(ary);
+	RBASIC_CLEAR_CLASS(tmp);
 	data.ary = tmp;
-	data.opt_methods = 0;
-	data.opt_inited = 0;
-	ruby_qsort(RARRAY_PTR(tmp), RARRAY_LEN(tmp), sizeof(VALUE),
-		   rb_block_given_p()?sort_1:sort_2, &data);
-
+	data.cmp_opt.opt_methods = 0;
+	data.cmp_opt.opt_inited = 0;
+	RARRAY_PTR_USE(tmp, ptr, {
+            ruby_qsort(ptr, len, sizeof(VALUE),
+                       rb_block_given_p()?sort_1:sort_2, &data);
+	}); /* WB: no new reference */
+	rb_ary_modify(ary);
         if (ARY_EMBED_P(tmp)) {
-            assert(ARY_EMBED_P(tmp));
             if (ARY_SHARED_P(ary)) { /* ary might be destructively operated in the given block */
                 rb_ary_unshare(ary);
+		FL_SET_EMBED(ary);
             }
-            FL_SET_EMBED(ary);
-            MEMCPY(RARRAY_PTR(ary), ARY_EMBED_PTR(tmp), VALUE, ARY_EMBED_LEN(tmp));
+	    ary_memcpy(ary, 0, ARY_EMBED_LEN(tmp), ARY_EMBED_PTR(tmp));
             ARY_SET_LEN(ary, ARY_EMBED_LEN(tmp));
         }
         else {
-            assert(!ARY_EMBED_P(tmp));
-            if (ARY_HEAP_PTR(ary) == ARY_HEAP_PTR(tmp)) {
-                assert(!ARY_EMBED_P(ary));
+            if (!ARY_EMBED_P(ary) && ARY_HEAP_PTR(ary) == ARY_HEAP_PTR(tmp)) {
                 FL_UNSET_SHARED(ary);
-                ARY_SET_CAPA(ary, ARY_CAPA(tmp));
+                ARY_SET_CAPA(ary, RARRAY_LEN(tmp));
             }
             else {
                 assert(!ARY_SHARED_P(tmp));
@@ -1800,38 +3335,61 @@ rb_ary_sort_bang(VALUE ary)
                     rb_ary_unshare(ary);
                 }
                 else {
-                    xfree(ARY_HEAP_PTR(ary));
+                    ary_heap_free(ary);
                 }
-                ARY_SET_PTR(ary, RARRAY_PTR(tmp));
-                ARY_SET_HEAP_LEN(ary, RARRAY_LEN(tmp));
-                ARY_SET_CAPA(ary, ARY_CAPA(tmp));
-            } 
+                ARY_SET_PTR(ary, ARY_HEAP_PTR(tmp));
+                ARY_SET_HEAP_LEN(ary, len);
+                ARY_SET_CAPA(ary, ARY_HEAP_LEN(tmp));
+            }
             /* tmp was lost ownership for the ptr */
             FL_UNSET(tmp, FL_FREEZE);
             FL_SET_EMBED(tmp);
             ARY_SET_EMBED_LEN(tmp, 0);
             FL_SET(tmp, FL_FREEZE);
-	}
+        }
         /* tmp will be GC'ed. */
-        RBASIC(tmp)->klass = rb_cArray;
+        RBASIC_SET_CLASS_RAW(tmp, rb_cArray); /* rb_cArray must be marked */
     }
+    ary_verify(ary);
     return ary;
 }
 
 /*
  *  call-seq:
- *     array.sort                   -> an_array 
- *     array.sort {| a,b | block }  -> an_array 
- *  
- *  Returns a new array created by sorting <i>self</i>. Comparisons for
- *  the sort will be done using the <code><=></code> operator or using
- *  an optional code block. The block implements a comparison between
- *  <i>a</i> and <i>b</i>, returning -1, 0, or +1. See also
- *  <code>Enumerable#sort_by</code>.
- *     
- *     a = [ "d", "a", "e", "c", "b" ]
- *     a.sort                    #=> ["a", "b", "c", "d", "e"]
- *     a.sort {|x,y| y <=> x }   #=> ["e", "d", "c", "b", "a"]
+ *    array.sort -> new_array
+ *    array.sort {|a, b| ... } -> new_array
+ *
+ *  Returns a new \Array whose elements are those from +self+, sorted.
+ *
+ *  With no block, compares elements using operator <tt><=></tt>
+ *  (see Comparable):
+ *    a = 'abcde'.split('').shuffle
+ *    a # => ["e", "b", "d", "a", "c"]
+ *    a1 = a.sort
+ *    a1 # => ["a", "b", "c", "d", "e"]
+ *
+ *  With a block, calls the block with each element pair;
+ *  for each element pair +a+ and +b+, the block should return an integer:
+ *  - Negative when +b+ is to follow +a+.
+ *  - Zero when +a+ and +b+ are equivalent.
+ *  - Positive when +a+ is to follow +b+.
+ *
+ *  Example:
+ *    a = 'abcde'.split('').shuffle
+ *    a # => ["e", "b", "d", "a", "c"]
+ *    a1 = a.sort {|a, b| a <=> b }
+ *    a1 # => ["a", "b", "c", "d", "e"]
+ *    a2 = a.sort {|a, b| b <=> a }
+ *    a2 # => ["e", "d", "c", "b", "a"]
+ *
+ *  When the block returns zero, the order for +a+ and +b+ is indeterminate,
+ *  and may be unstable:
+ *    a = 'abcde'.split('').shuffle
+ *    a # => ["e", "b", "d", "a", "c"]
+ *    a1 = a.sort {|a, b| 0 }
+ *    a1 # =>  ["c", "e", "b", "d", "a"]
+ *
+ *  Related: Enumerable#sort_by.
  */
 
 VALUE
@@ -1842,19 +3400,227 @@ rb_ary_sort(VALUE ary)
     return ary;
 }
 
+static VALUE rb_ary_bsearch_index(VALUE ary);
+
+/*
+ *  call-seq:
+ *    array.bsearch {|element| ... } -> object
+ *    array.bsearch -> new_enumerator
+ *
+ *  Returns an element from +self+ selected by a binary search.
+ *  +self+ should be sorted, but this is not checked.
+ *
+ *  By using binary search, finds a value from this array which meets
+ *  the given condition in <tt>O(log n)</tt> where +n+ is the size of the array.
+ *
+ *  There are two search modes:
+ *  - <b>Find-minimum mode</b>: the block should return +true+ or +false+.
+ *  - <b>Find-any mode</b>: the block should return a numeric value.
+ *
+ *  The block should not mix the modes by and sometimes returning +true+ or +false+
+ *  and sometimes returning a numeric value, but this is not checked.
+ *
+ *  <b>Find-Minimum Mode</b>
+ *
+ *  In find-minimum mode, the block always returns +true+ or +false+.
+ *  The further requirement (though not checked) is that
+ *  there are no indexes +i+ and +j+ such that:
+ *  - <tt>0 <= i < j <= self.size</tt>.
+ *  - The block returns +true+ for <tt>self[i]</tt> and +false+ for <tt>self[j]</tt>.
+ *
+ *  In find-minimum mode, method bsearch returns the first element for which the block returns true.
+ *
+ *  Examples:
+ *    a = [0, 4, 7, 10, 12]
+ *    a.bsearch {|x| x >= 4 } # => 4
+ *    a.bsearch {|x| x >= 6 } # => 7
+ *    a.bsearch {|x| x >= -1 } # => 0
+ *    a.bsearch {|x| x >= 100 } # => nil
+ *
+ *  Less formally: the block is such that all +false+-evaluating elements
+ *  precede all +true+-evaluating elements.
+ *
+ *  These make sense as blocks in find-minimum mode:
+ *    a = [0, 4, 7, 10, 12]
+ *    a.map {|x| x >= 4 } # => [false, true, true, true, true]
+ *    a.map {|x| x >= 6 } # => [false, false, true, true, true]
+ *    a.map {|x| x >= -1 } # => [true, true, true, true, true]
+ *    a.map {|x| x >= 100 } # => [false, false, false, false, false]
+ *
+ *  This would not make sense:
+ *    a = [0, 4, 7, 10, 12]
+ *    a.map {|x| x == 7 } # => [false, false, true, false, false]
+ *
+ *  <b>Find-Any Mode</b>
+ *
+ *  In find-any mode, the block always returns a numeric value.
+ *  The further requirement (though not checked) is that
+ *  there are no indexes +i+ and +j+ such that:
+ *  - <tt>0 <= i < j <= self.size</tt>.
+ *  - The block returns a negative value for <tt>self[i]</tt>
+ *    and a positive value for <tt>self[j]</tt>.
+ *  - The block returns a negative value for <tt>self[i]</tt> and zero <tt>self[j]</tt>.
+ *  - The block returns zero for <tt>self[i]</tt> and a positive value for <tt>self[j]</tt>.
+ *
+ *  In find-any mode, method bsearch returns some element
+ *  for which the block returns zero, or +nil+ if no such element is found.
+ *
+ *  Examples:
+ *    a = [0, 4, 7, 10, 12]
+ *    a.bsearch {|element| 7 <=> element } # => 7
+ *    a.bsearch {|element| -1 <=> element } # => nil
+ *    a.bsearch {|element| 5 <=> element } # => nil
+ *    a.bsearch {|element| 15 <=> element } # => nil
+ *
+ *  Less formally: the block is such that:
+ *  - All positive-evaluating elements precede all zero-evaluating elements.
+ *  - All positive-evaluating elements precede all negative-evaluating elements.
+ *  - All zero-evaluating elements precede all negative-evaluating elements.
+ *
+ *  These make sense as blocks in find-any mode:
+ *    a = [0, 4, 7, 10, 12]
+ *    a.map {|element| 7 <=> element } # => [1, 1, 0, -1, -1]
+ *    a.map {|element| -1 <=> element } # => [-1, -1, -1, -1, -1]
+ *    a.map {|element| 5 <=> element } # => [1, 1, -1, -1, -1]
+ *    a.map {|element| 15 <=> element } # => [1, 1, 1, 1, 1]
+ *
+ *  This would not make sense:
+ *    a = [0, 4, 7, 10, 12]
+ *    a.map {|element| element <=> 7 } # => [-1, -1, 0, 1, 1]
+ *
+ *  Returns an enumerator if no block given:
+ *    a = [0, 4, 7, 10, 12]
+ *    a.bsearch # => #<Enumerator: [0, 4, 7, 10, 12]:bsearch>
+ */
+
+static VALUE
+rb_ary_bsearch(VALUE ary)
+{
+    VALUE index_result = rb_ary_bsearch_index(ary);
+
+    if (FIXNUM_P(index_result)) {
+	return rb_ary_entry(ary, FIX2LONG(index_result));
+    }
+    return index_result;
+}
+
+/*
+ *  call-seq:
+ *    array.bsearch_index {|element| ... } -> integer or nil
+ *    array.bsearch_index -> new_enumerator
+ *
+ *  Searches +self+ as described at method #bsearch,
+ *  but returns the _index_ of the found element instead of the element itself.
+ */
+
+static VALUE
+rb_ary_bsearch_index(VALUE ary)
+{
+    long low = 0, high = RARRAY_LEN(ary), mid;
+    int smaller = 0, satisfied = 0;
+    VALUE v, val;
+
+    RETURN_ENUMERATOR(ary, 0, 0);
+    while (low < high) {
+	mid = low + ((high - low) / 2);
+	val = rb_ary_entry(ary, mid);
+	v = rb_yield(val);
+	if (FIXNUM_P(v)) {
+	    if (v == INT2FIX(0)) return INT2FIX(mid);
+	    smaller = (SIGNED_VALUE)v < 0; /* Fixnum preserves its sign-bit */
+	}
+	else if (v == Qtrue) {
+	    satisfied = 1;
+	    smaller = 1;
+	}
+	else if (v == Qfalse || v == Qnil) {
+	    smaller = 0;
+	}
+	else if (rb_obj_is_kind_of(v, rb_cNumeric)) {
+	    const VALUE zero = INT2FIX(0);
+	    switch (rb_cmpint(rb_funcallv(v, id_cmp, 1, &zero), v, zero)) {
+	      case 0: return INT2FIX(mid);
+	      case 1: smaller = 1; break;
+	      case -1: smaller = 0;
+	    }
+	}
+	else {
+	    rb_raise(rb_eTypeError, "wrong argument type %"PRIsVALUE
+		     " (must be numeric, true, false or nil)",
+		     rb_obj_class(v));
+	}
+	if (smaller) {
+	    high = mid;
+	}
+	else {
+	    low = mid + 1;
+	}
+    }
+    if (!satisfied) return Qnil;
+    return INT2FIX(low);
+}
+
+
+static VALUE
+sort_by_i(RB_BLOCK_CALL_FUNC_ARGLIST(i, dummy))
+{
+    return rb_yield(i);
+}
+
+/*
+ *  call-seq:
+ *    array.sort_by! {|element| ... } -> self
+ *    array.sort_by! -> new_enumerator
+ *
+ *  Sorts the elements of +self+ in place,
+ *  using an ordering determined by the block; returns self.
+ *
+ *  Calls the block with each successive element;
+ *  sorts elements based on the values returned from the block.
+ *
+ *  For duplicates returned by the block, the ordering is indeterminate, and may be unstable.
+ *
+ *  This example sorts strings based on their sizes:
+ *    a = ['aaaa', 'bbb', 'cc', 'd']
+ *    a.sort_by! {|element| element.size }
+ *    a # => ["d", "cc", "bbb", "aaaa"]
+ *
+ *  Returns a new \Enumerator if no block given:
+ *
+ *    a = ['aaaa', 'bbb', 'cc', 'd']
+ *    a.sort_by! # => #<Enumerator: ["aaaa", "bbb", "cc", "d"]:sort_by!>
+ */
+
+static VALUE
+rb_ary_sort_by_bang(VALUE ary)
+{
+    VALUE sorted;
+
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    rb_ary_modify(ary);
+    sorted = rb_block_call(ary, rb_intern("sort_by"), 0, 0, sort_by_i, 0);
+    rb_ary_replace(ary, sorted);
+    return ary;
+}
+
 
 /*
  *  call-seq:
- *     array.collect {|item| block }  -> an_array
- *     array.map     {|item| block }  -> an_array
- *  
- *  Invokes <i>block</i> once for each element of <i>self</i>. Creates a 
- *  new array containing the values returned by the block.
- *  See also <code>Enumerable#collect</code>.
- *     
- *     a = [ "a", "b", "c", "d" ]
- *     a.collect {|x| x + "!" }   #=> ["a!", "b!", "c!", "d!"]
- *     a                          #=> ["a", "b", "c", "d"]
+ *    array.map {|element| ... } -> new_array
+ *    array.map -> new_enumerator
+ *
+ *  Calls the block, if given, with each element of +self+;
+ *  returns a new \Array whose elements are the return values from the block:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.map {|element| element.class }
+ *    a1 # => [Symbol, String, Integer]
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.map
+ *    a1 # => #<Enumerator: [:foo, "bar", 2]:map>
+ *
+ *  Array#collect is an alias for Array#map.
  */
 
 static VALUE
@@ -1863,27 +3629,31 @@ rb_ary_collect(VALUE ary)
     long i;
     VALUE collect;
 
-    RETURN_ENUMERATOR(ary, 0, 0);
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
     collect = rb_ary_new2(RARRAY_LEN(ary));
     for (i = 0; i < RARRAY_LEN(ary); i++) {
-	rb_ary_push(collect, rb_yield(RARRAY_PTR(ary)[i]));
+        rb_ary_push(collect, rb_yield(RARRAY_AREF(ary, i)));
     }
     return collect;
 }
 
 
-/* 
+/*
  *  call-seq:
- *     array.collect! {|item| block }   ->   array
- *     array.map!     {|item| block }   ->   array
+ *    array.map! {|element| ... } -> self
+ *    array.map! -> new_enumerator
  *
- *  Invokes the block once for each element of _self_, replacing the
- *  element with the value returned by _block_.
- *  See also <code>Enumerable#collect</code>.
- *   
- *     a = [ "a", "b", "c", "d" ]
- *     a.collect! {|x| x + "!" }
- *     a             #=>  [ "a!", "b!", "c!", "d!" ]
+ *  Calls the block, if given, with each element;
+ *  replaces the element with the block's return value:
+ *    a = [:foo, 'bar', 2]
+ *    a.map! { |element| element.class } # => [Symbol, String, Integer]
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [:foo, 'bar', 2]
+ *    a1 = a.map!
+ *    a1 # => #<Enumerator: [:foo, "bar", 2]:map!>
+ *
+ *  Array#collect! is an alias for Array#map!.
  */
 
 static VALUE
@@ -1891,16 +3661,16 @@ rb_ary_collect_bang(VALUE ary)
 {
     long i;
 
-    RETURN_ENUMERATOR(ary, 0, 0);
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
     rb_ary_modify(ary);
     for (i = 0; i < RARRAY_LEN(ary); i++) {
-	rb_ary_store(ary, i, rb_yield(RARRAY_PTR(ary)[i]));
+	rb_ary_store(ary, i, rb_yield(RARRAY_AREF(ary, i)));
     }
     return ary;
 }
 
 VALUE
-rb_get_values_at(VALUE obj, long olen, int argc, VALUE *argv, VALUE (*func) (VALUE, long))
+rb_get_values_at(VALUE obj, long olen, int argc, const VALUE *argv, VALUE (*func) (VALUE, long))
 {
     VALUE result = rb_ary_new2(argc);
     long beg, len, i, j;
@@ -1911,15 +3681,13 @@ rb_get_values_at(VALUE obj, long olen, int argc, VALUE *argv, VALUE (*func) (VAL
 	    continue;
 	}
 	/* check if idx is Range */
-	switch (rb_range_beg_len(argv[i], &beg, &len, olen, 0)) {
-	  case Qfalse:
-	    break;
-	  case Qnil:
-	    continue;
-	  default:
-	    for (j=0; j<len; j++) {
-		rb_ary_push(result, (*func)(obj, j+beg));
+	if (rb_range_beg_len(argv[i], &beg, &len, olen, 1)) {
+	    long end = olen < beg+len ? olen : beg+len;
+	    for (j = beg; j < end; j++) {
+		rb_ary_push(result, (*func)(obj, j));
 	    }
+	    if (beg + len > j)
+		rb_ary_resize(result, RARRAY_LEN(result) + (beg + len) - j);
 	    continue;
 	}
 	rb_ary_push(result, (*func)(obj, NUM2LONG(argv[i])));
@@ -1927,39 +3695,98 @@ rb_get_values_at(VALUE obj, long olen, int argc, VALUE *argv, VALUE (*func) (VAL
     return result;
 }
 
-/* 
+static VALUE
+append_values_at_single(VALUE result, VALUE ary, long olen, VALUE idx)
+{
+    long beg, len;
+    if (FIXNUM_P(idx)) {
+	beg = FIX2LONG(idx);
+    }
+    /* check if idx is Range */
+    else if (rb_range_beg_len(idx, &beg, &len, olen, 1)) {
+	if (len > 0) {
+            const VALUE *const src = RARRAY_CONST_PTR_TRANSIENT(ary);
+	    const long end = beg + len;
+	    const long prevlen = RARRAY_LEN(result);
+	    if (beg < olen) {
+		rb_ary_cat(result, src + beg, end > olen ? olen-beg : len);
+	    }
+	    if (end > olen) {
+		rb_ary_store(result, prevlen + len - 1, Qnil);
+	    }
+	}
+	return result;
+    }
+    else {
+	beg = NUM2LONG(idx);
+    }
+    return rb_ary_push(result, rb_ary_entry(ary, beg));
+}
+
+/*
  *  call-seq:
- *     array.values_at(selector,... )  -> an_array
+ *    array.values_at(*indexes) -> new_array
+ *
+ *  Returns a new \Array whose elements are the elements
+ *  of +self+ at the given \Integer +indexes+.
+ *
+ *  For each positive +index+, returns the element at offset +index+:
+ *    a = [:foo, 'bar', 2]
+ *    a.values_at(0, 2) # => [:foo, 2]
+ *
+ *  The given +indexes+ may be in any order, and may repeat:
+ *    a = [:foo, 'bar', 2]
+ *    a.values_at(2, 0, 1, 0, 2) # => [2, :foo, "bar", :foo, 2]
+ *
+ *  Assigns +nil+ for an +index+ that is too large:
+ *    a = [:foo, 'bar', 2]
+ *    a.values_at(0, 3, 1, 3) # => [:foo, nil, "bar", nil]
  *
- *  Returns an array containing the elements in
- *  _self_ corresponding to the given selector(s). The selectors
- *  may be either integer indices or ranges. 
- *  See also <code>Array#select</code>.
- * 
- *     a = %w{ a b c d e f }
- *     a.values_at(1, 3, 5)
- *     a.values_at(1, 3, 5, 7)
- *     a.values_at(-1, -3, -5, -7)
- *     a.values_at(1..3, 2...5)
+ *  Returns a new empty \Array if no arguments given.
+ *
+ *  For each negative +index+, counts backward from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a.values_at(-1, -3) # => [2, :foo]
+ *
+ *  Assigns +nil+ for an +index+ that is too small:
+ *    a = [:foo, 'bar', 2]
+ *    a.values_at(0, -5, 1, -6, 2) # => [:foo, nil, "bar", nil, 2]
+ *
+ *  The given +indexes+ may have a mixture of signs:
+ *    a = [:foo, 'bar', 2]
+ *    a.values_at(0, -2, 1, -1) # => [:foo, "bar", "bar", 2]
  */
 
 static VALUE
 rb_ary_values_at(int argc, VALUE *argv, VALUE ary)
 {
-    return rb_get_values_at(ary, RARRAY_LEN(ary), argc, argv, rb_ary_entry);
+    long i, olen = RARRAY_LEN(ary);
+    VALUE result = rb_ary_new_capa(argc);
+    for (i = 0; i < argc; ++i) {
+	append_values_at_single(result, ary, olen, argv[i]);
+    }
+    RB_GC_GUARD(ary);
+    return result;
 }
 
 
 /*
  *  call-seq:
- *     array.select {|item| block } -> an_array
- *  
- *  Invokes the block passing in successive elements from <i>array</i>,
- *  returning an array containing those elements for which the block
- *  returns a true value (equivalent to <code>Enumerable#select</code>).
- *     
- *     a = %w{ a b c d e f }
- *     a.select {|v| v =~ /[aeiou]/}   #=> ["a", "e"]
+ *    array.select {|element| ... } -> new_array
+ *    array.select -> new_enumerator
+ *
+ *  Calls the block, if given, with each element of +self+;
+ *  returns a new \Array containing those elements of +self+
+ *  for which the block returns a truthy value:
+ *    a = [:foo, 'bar', 2, :bam]
+ *    a1 = a.select {|element| element.to_s.start_with?('b') }
+ *    a1 # => ["bar", :bam]
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [:foo, 'bar', 2, :bam]
+ *    a.select # => #<Enumerator: [:foo, "bar", 2, :bam]:select>
+ *
+ *  Array#filter is an alias for Array#select.
  */
 
 static VALUE
@@ -1968,31 +3795,161 @@ rb_ary_select(VALUE ary)
     VALUE result;
     long i;
 
-    RETURN_ENUMERATOR(ary, 0, 0);
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
     result = rb_ary_new2(RARRAY_LEN(ary));
     for (i = 0; i < RARRAY_LEN(ary); i++) {
-	if (RTEST(rb_yield(RARRAY_PTR(ary)[i]))) {
+	if (RTEST(rb_yield(RARRAY_AREF(ary, i)))) {
 	    rb_ary_push(result, rb_ary_elt(ary, i));
 	}
     }
     return result;
 }
 
+struct select_bang_arg {
+    VALUE ary;
+    long len[2];
+};
+
+static VALUE
+select_bang_i(VALUE a)
+{
+    volatile struct select_bang_arg *arg = (void *)a;
+    VALUE ary = arg->ary;
+    long i1, i2;
+
+    for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); arg->len[0] = ++i1) {
+	VALUE v = RARRAY_AREF(ary, i1);
+	if (!RTEST(rb_yield(v))) continue;
+	if (i1 != i2) {
+	    rb_ary_store(ary, i2, v);
+	}
+	arg->len[1] = ++i2;
+    }
+    return (i1 == i2) ? Qnil : ary;
+}
+
+static VALUE
+select_bang_ensure(VALUE a)
+{
+    volatile struct select_bang_arg *arg = (void *)a;
+    VALUE ary = arg->ary;
+    long len = RARRAY_LEN(ary);
+    long i1 = arg->len[0], i2 = arg->len[1];
+
+    if (i2 < len && i2 < i1) {
+	long tail = 0;
+        rb_ary_modify(ary);
+	if (i1 < len) {
+	    tail = len - i1;
+            RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+		    MEMMOVE(ptr + i2, ptr + i1, VALUE, tail);
+		});
+	}
+	ARY_SET_LEN(ary, i2 + tail);
+    }
+    return ary;
+}
+
+/*
+ *  call-seq:
+ *    array.select! {|element| ... } -> self or nil
+ *    array.select! -> new_enumerator
+ *
+ *  Calls the block, if given  with each element of +self+;
+ *  removes from +self+ those elements for which the block returns +false+ or +nil+.
+ *
+ *  Returns +self+ if any elements were removed:
+ *    a = [:foo, 'bar', 2, :bam]
+ *    a.select! {|element| element.to_s.start_with?('b') } # => ["bar", :bam]
+ *
+ *  Returns +nil+ if no elements were removed.
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [:foo, 'bar', 2, :bam]
+ *    a.select! # => #<Enumerator: [:foo, "bar", 2, :bam]:select!>
+ *
+ *  Array#filter! is an alias for Array#select!.
+ */
+
+static VALUE
+rb_ary_select_bang(VALUE ary)
+{
+    struct select_bang_arg args;
+
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    rb_ary_modify(ary);
+
+    args.ary = ary;
+    args.len[0] = args.len[1] = 0;
+    return rb_ensure(select_bang_i, (VALUE)&args, select_bang_ensure, (VALUE)&args);
+}
+
+/*
+ *  call-seq:
+ *    array.keep_if {|element| ... } -> self
+ *    array.keep_if -> new_enumeration
+ *
+ *  Retains those elements for which the block returns a truthy value;
+ *  deletes all other elements; returns +self+:
+ *    a = [:foo, 'bar', 2, :bam]
+ *    a.keep_if {|element| element.to_s.start_with?('b') } # => ["bar", :bam]
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [:foo, 'bar', 2, :bam]
+ *    a.keep_if # => #<Enumerator: [:foo, "bar", 2, :bam]:keep_if>
+ */
+
+static VALUE
+rb_ary_keep_if(VALUE ary)
+{
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    rb_ary_select_bang(ary);
+    return ary;
+}
+
+static void
+ary_resize_smaller(VALUE ary, long len)
+{
+    rb_ary_modify(ary);
+    if (RARRAY_LEN(ary) > len) {
+	ARY_SET_LEN(ary, len);
+	if (len * 2 < ARY_CAPA(ary) &&
+	    ARY_CAPA(ary) > ARY_DEFAULT_SIZE) {
+	    ary_resize_capa(ary, len * 2);
+	}
+    }
+}
+
 /*
  *  call-seq:
- *     array.delete(obj)            -> obj or nil 
- *     array.delete(obj) { block }  -> obj or nil
- *  
- *  Deletes items from <i>self</i> that are equal to <i>obj</i>. If
- *  the item is not found, returns <code>nil</code>. If the optional
- *  code block is given, returns the result of <i>block</i> if the item
- *  is not found.
- *     
- *     a = [ "a", "b", "b", "b", "c" ]
- *     a.delete("b")                   #=> "b"
- *     a                               #=> ["a", "c"]
- *     a.delete("z")                   #=> nil
- *     a.delete("z") { "not found" }   #=> "not found"
+ *    array.delete(obj) -> deleted_object
+ *    array.delete(obj) {|nosuch| ... } -> deleted_object or block_return
+ *
+ *  Removes zero or more elements from +self+; returns +self+.
+ *
+ *  When no block is given,
+ *  removes from +self+ each element +ele+ such that <tt>ele == obj</tt>;
+ *  returns the last deleted element:
+ *    s1 = 'bar'; s2 = 'bar'
+ *    a = [:foo, s1, 2, s2]
+ *    a.delete('bar') # => "bar"
+ *    a # => [:foo, 2]
+ *
+ *  Returns +nil+ if no elements removed.
+ *
+ *  When a block is given,
+ *  removes from +self+ each element +ele+ such that <tt>ele == obj</tt>.
+ *
+ *  If any such elements are found, ignores the block
+ *  and returns the last deleted element:
+ *    s1 = 'bar'; s2 = 'bar'
+ *    a = [:foo, s1, 2, s2]
+ *    deleted_obj = a.delete('bar') {|obj| fail 'Cannot happen' }
+ *    a # => [:foo, 2]
+ *
+ *  If no such elements are found, returns the block's return value:
+ *    a = [:foo, 'bar', 2]
+ *    a.delete(:nosuch) {|obj| "#{obj} not found" } # => "nosuch not found"
  */
 
 VALUE
@@ -2002,7 +3959,7 @@ rb_ary_delete(VALUE ary, VALUE item)
     long i1, i2;
 
     for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); i1++) {
-	VALUE e = RARRAY_PTR(ary)[i1];
+	VALUE e = RARRAY_AREF(ary, i1);
 
 	if (rb_equal(e, item)) {
 	    v = e;
@@ -2020,16 +3977,33 @@ rb_ary_delete(VALUE ary, VALUE item)
 	return Qnil;
     }
 
-    rb_ary_modify(ary);
-    if (RARRAY_LEN(ary) > i2) {
-	ARY_SET_LEN(ary, i2);
-	if (i2 * 2 < ARY_CAPA(ary) &&
-	    ARY_CAPA(ary) > ARY_DEFAULT_SIZE) {
-	    ary_resize_capa(ary, i2*2);
+    ary_resize_smaller(ary, i2);
+
+    ary_verify(ary);
+    return v;
+}
+
+void
+rb_ary_delete_same(VALUE ary, VALUE item)
+{
+    long i1, i2;
+
+    for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); i1++) {
+	VALUE e = RARRAY_AREF(ary, i1);
+
+	if (e == item) {
+	    continue;
 	}
+	if (i1 != i2) {
+	    rb_ary_store(ary, i2, e);
+	}
+	i2++;
+    }
+    if (RARRAY_LEN(ary) == i2) {
+	return;
     }
 
-    return v;
+    ary_resize_smaller(ary, i2);
 }
 
 VALUE
@@ -2045,26 +4019,34 @@ rb_ary_delete_at(VALUE ary, long pos)
     }
 
     rb_ary_modify(ary);
-    del = RARRAY_PTR(ary)[pos];
-    MEMMOVE(RARRAY_PTR(ary)+pos, RARRAY_PTR(ary)+pos+1, VALUE,
-	    RARRAY_LEN(ary)-pos-1);
+    del = RARRAY_AREF(ary, pos);
+    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+        MEMMOVE(ptr+pos, ptr+pos+1, VALUE, len-pos-1);
+    });
     ARY_INCREASE_LEN(ary, -1);
-
+    ary_verify(ary);
     return del;
 }
 
 /*
  *  call-seq:
- *     array.delete_at(index)  -> obj or nil
- *  
- *  Deletes the element at the specified index, returning that element,
- *  or <code>nil</code> if the index is out of range. See also
- *  <code>Array#slice!</code>.
- *     
- *     a = %w( ant bat cat dog )
- *     a.delete_at(2)    #=> "cat"
- *     a                 #=> ["ant", "bat", "dog"]
- *     a.delete_at(99)   #=> nil
+ *    array.delete_at(index) -> deleted_object or nil
+ *
+ *  Deletes an element from +self+, per the given \Integer +index+.
+ *
+ *  When +index+ is non-negative, deletes the element at offset +index+:
+ *    a = [:foo, 'bar', 2]
+ *    a.delete_at(1) # => "bar"
+ *    a # => [:foo, 2]
+ *
+ *  If index is too large, returns +nil+.
+ *
+ *  When +index+ is negative, counts backward from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a.delete_at(-2) # => "bar"
+ *    a # => [:foo, 2]
+ *
+ *  If +index+ is too small (far from zero), returns nil.
  */
 
 static VALUE
@@ -2073,58 +4055,118 @@ rb_ary_delete_at_m(VALUE ary, VALUE pos)
     return rb_ary_delete_at(ary, NUM2LONG(pos));
 }
 
+static VALUE
+ary_slice_bang_by_rb_ary_splice(VALUE ary, long pos, long len)
+{
+    const long orig_len = RARRAY_LEN(ary);
+
+    if (len < 0) {
+        return Qnil;
+    }
+    else if (pos < -orig_len) {
+        return Qnil;
+    }
+    else if (pos < 0) {
+        pos += orig_len;
+    }
+    else if (orig_len < pos) {
+        return Qnil;
+    }
+    if (orig_len < pos + len) {
+        len = orig_len - pos;
+    }
+    if (len == 0) {
+        return rb_ary_new2(0);
+    }
+    else {
+        VALUE arg2 = rb_ary_new4(len, RARRAY_CONST_PTR_TRANSIENT(ary)+pos);
+        rb_ary_splice(ary, pos, len, 0, 0);
+        return arg2;
+    }
+}
+
 /*
  *  call-seq:
- *     array.slice!(index)         -> obj or nil
- *     array.slice!(start, length) -> sub_array or nil
- *     array.slice!(range)         -> sub_array or nil 
- *  
- *  Deletes the element(s) given by an index (optionally with a length)
- *  or by a range. Returns the deleted object, subarray, or
- *  <code>nil</code> if the index is out of range.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.slice!(1)     #=> "b"
- *     a               #=> ["a", "c"]
- *     a.slice!(-1)    #=> "c"
- *     a               #=> ["a"]
- *     a.slice!(100)   #=> nil
- *     a               #=> ["a"]
+ *    array.slice!(n) -> object or nil
+ *    array.slice!(start, length) -> new_array or nil
+ *    array.slice!(range) -> new_array or nil
+ *
+ *  Removes and returns elements from +self+.
+ *
+ *  When the only argument is an \Integer +n+,
+ *  removes and returns the _nth_ element in +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.slice!(1) # => "bar"
+ *    a # => [:foo, 2]
+ *
+ *  If +n+ is negative, counts backwards from the end of +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.slice!(-1) # => 2
+ *    a # => [:foo, "bar"]
+ *
+ *  If +n+ is out of range, returns +nil+.
+ *
+ *  When the only arguments are Integers +start+ and +length+,
+ *  removes +length+ elements from +self+ beginning at offset  +start+;
+ *  returns the deleted objects in a new Array:
+ *    a = [:foo, 'bar', 2]
+ *    a.slice!(0, 2) # => [:foo, "bar"]
+ *    a # => [2]
+ *
+ *  If <tt>start + length</tt> exceeds the array size,
+ *  removes and returns all elements from offset +start+ to the end:
+ *    a = [:foo, 'bar', 2]
+ *    a.slice!(1, 50) # => ["bar", 2]
+ *    a # => [:foo]
+ *
+ *  If <tt>start == a.size</tt> and +length+ is non-negative,
+ *  returns a new empty \Array.
+ *
+ *  If +length+ is negative, returns +nil+.
+ *
+ *  When the only argument is a \Range object +range+,
+ *  treats <tt>range.min</tt> as +start+ above and <tt>range.size</tt> as +length+ above:
+ *    a = [:foo, 'bar', 2]
+ *     a.slice!(1..2) # => ["bar", 2]
+ *    a # => [:foo]
+ *
+ *  If <tt>range.start == a.size</tt>, returns a new empty \Array.
+ *
+ *  If <tt>range.start</tt> is larger than the array size, returns +nil+.
+ *
+ *  If <tt>range.end</tt> is negative, counts backwards from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a.slice!(0..-2) # => [:foo, "bar"]
+ *    a # => [2]
+ *
+ *  If <tt>range.start</tt> is negative,
+ *  calculates the start index backwards from the end of the array:
+ *    a = [:foo, 'bar', 2]
+ *    a.slice!(-2..2) # => ["bar", 2]
+ *    a # => [:foo]
  */
 
 static VALUE
 rb_ary_slice_bang(int argc, VALUE *argv, VALUE ary)
 {
-    VALUE arg1, arg2;
-    long pos, len, orig_len;
+    VALUE arg1;
+    long pos, len;
 
     rb_ary_modify_check(ary);
-    if (rb_scan_args(argc, argv, "11", &arg1, &arg2) == 2) {
-	pos = NUM2LONG(arg1);
-	len = NUM2LONG(arg2);
-      delete_pos_len:
-	if (len < 0) return Qnil;
-	orig_len = RARRAY_LEN(ary);
-	if (pos < 0) {
-	    pos += orig_len;
-	    if (pos < 0) return Qnil;
-	}
-	else if (orig_len < pos) return Qnil;
-	if (orig_len < pos + len) {
-	    len = orig_len - pos;
-	}
-	if (len == 0) return rb_ary_new2(0);
-	arg2 = rb_ary_new4(len, RARRAY_PTR(ary)+pos);
-	RBASIC(arg2)->klass = rb_obj_class(ary);
-	rb_ary_splice(ary, pos, len, Qundef);
-	return arg2;
+    rb_check_arity(argc, 1, 2);
+    arg1 = argv[0];
+
+    if (argc == 2) {
+	pos = NUM2LONG(argv[0]);
+	len = NUM2LONG(argv[1]);
+        return ary_slice_bang_by_rb_ary_splice(ary, pos, len);
     }
 
     if (!FIXNUM_P(arg1)) {
 	switch (rb_range_beg_len(arg1, &pos, &len, RARRAY_LEN(ary), 0)) {
 	  case Qtrue:
 	    /* valid range */
-	    goto delete_pos_len;
+            return ary_slice_bang_by_rb_ary_splice(ary, pos, len);
 	  case Qnil:
 	    /* invalid range */
 	    return Qnil;
@@ -2137,78 +4179,132 @@ rb_ary_slice_bang(int argc, VALUE *argv, VALUE ary)
     return rb_ary_delete_at(ary, NUM2LONG(arg1));
 }
 
-/*
- *  call-seq:
- *     array.reject! {|item| block }  -> array or nil
- *  
- *  Equivalent to <code>Array#delete_if</code>, deleting elements from
- *  _self_ for which the block evaluates to true, but returns
- *  <code>nil</code> if no changes were made. Also see
- *  <code>Enumerable#reject</code>.
- */
+static VALUE
+ary_reject(VALUE orig, VALUE result)
+{
+    long i;
+
+    for (i = 0; i < RARRAY_LEN(orig); i++) {
+	VALUE v = RARRAY_AREF(orig, i);
+
+        if (!RTEST(rb_yield(v))) {
+	    rb_ary_push(result, v);
+	}
+    }
+    return result;
+}
 
 static VALUE
-rb_ary_reject_bang(VALUE ary)
+reject_bang_i(VALUE a)
 {
+    volatile struct select_bang_arg *arg = (void *)a;
+    VALUE ary = arg->ary;
     long i1, i2;
 
-    RETURN_ENUMERATOR(ary, 0, 0);
-    rb_ary_modify(ary);
-    for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); i1++) {
-	VALUE v = RARRAY_PTR(ary)[i1];
+    for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); arg->len[0] = ++i1) {
+	VALUE v = RARRAY_AREF(ary, i1);
 	if (RTEST(rb_yield(v))) continue;
 	if (i1 != i2) {
 	    rb_ary_store(ary, i2, v);
 	}
-	i2++;
+	arg->len[1] = ++i2;
     }
+    return (i1 == i2) ? Qnil : ary;
+}
 
-    if (RARRAY_LEN(ary) == i2) return Qnil;
-    if (i2 < RARRAY_LEN(ary))
-	ARY_SET_LEN(ary, i2);
-    return ary;
+static VALUE
+ary_reject_bang(VALUE ary)
+{
+    struct select_bang_arg args;
+    rb_ary_modify_check(ary);
+    args.ary = ary;
+    args.len[0] = args.len[1] = 0;
+    return rb_ensure(reject_bang_i, (VALUE)&args, select_bang_ensure, (VALUE)&args);
 }
 
 /*
  *  call-seq:
- *     array.reject {|item| block }  -> an_array
- *  
- *  Returns a new array containing the items in _self_
- *  for which the block is not true.
+ *    array.reject! {|element| ... } -> self or nil
+ *    array.reject! -> new_enumerator
+ *
+ *  Removes each element for which the block returns a truthy value.
+ *
+ *  Returns +self+ if any elements removed:
+ *    a = [:foo, 'bar', 2, 'bat']
+ *    a.reject! {|element| element.to_s.start_with?('b') } # => [:foo, 2]
+ *
+ *  Returns +nil+ if no elements removed.
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [:foo, 'bar', 2]
+ *    a.reject! # => #<Enumerator: [:foo, "bar", 2]:reject!>
+ */
+
+static VALUE
+rb_ary_reject_bang(VALUE ary)
+{
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    rb_ary_modify(ary);
+    return ary_reject_bang(ary);
+}
+
+/*
+ *  call-seq:
+ *    array.reject {|element| ... } -> new_array
+ *    array.reject -> new_enumerator
+ *
+ *  Returns a new \Array whose elements are all those from +self+
+ *  for which the block returns +false+ or +nil+:
+ *    a = [:foo, 'bar', 2, 'bat']
+ *    a1 = a.reject {|element| element.to_s.start_with?('b') }
+ *    a1 # => [:foo, 2]
+ *
+ *  Returns a new \Enumerator if no block given:
+ *     a = [:foo, 'bar', 2]
+ *     a.reject # => #<Enumerator: [:foo, "bar", 2]:reject>
  */
 
 static VALUE
 rb_ary_reject(VALUE ary)
 {
-    RETURN_ENUMERATOR(ary, 0, 0);
-    ary = rb_ary_dup(ary);
-    rb_ary_reject_bang(ary);
-    return ary;
+    VALUE rejected_ary;
+
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    rejected_ary = rb_ary_new();
+    ary_reject(ary, rejected_ary);
+    return rejected_ary;
 }
 
 /*
  *  call-seq:
- *     array.delete_if {|item| block }  -> array
- *  
- *  Deletes every element of <i>self</i> for which <i>block</i> evaluates
- *  to <code>true</code>.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.delete_if {|x| x >= "b" }   #=> ["a"]
+ *    array.delete_if {|element| ... } -> self
+ *    array.delete_if -> Enumerator
+ *
+ *  Removes each element in +self+ for which the block returns a truthy value;
+ *  returns +self+:
+ *    a = [:foo, 'bar', 2, 'bat']
+ *    a.delete_if {|element| element.to_s.start_with?('b') } # => [:foo, 2]
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [:foo, 'bar', 2]
+ *    a.delete_if # => #<Enumerator: [:foo, "bar", 2]:delete_if>
  */
 
 static VALUE
 rb_ary_delete_if(VALUE ary)
 {
-    RETURN_ENUMERATOR(ary, 0, 0);
-    rb_ary_reject_bang(ary);
+    ary_verify(ary);
+    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    ary_reject_bang(ary);
     return ary;
 }
 
 static VALUE
-take_i(VALUE val, VALUE *args, int argc, VALUE *argv)
+take_i(RB_BLOCK_CALL_FUNC_ARGLIST(val, cbarg))
 {
-    if (args[1]-- == 0) rb_iter_break();
+    VALUE *args = (VALUE *)cbarg;
+    if (args[1] == 0) rb_iter_break();
+    else args[1]--;
     if (argc > 1) val = rb_ary_new4(argc, argv);
     rb_ary_push(args[0], val);
     return Qnil;
@@ -2223,73 +4319,128 @@ take_items(VALUE obj, long n)
     if (!NIL_P(result)) return rb_ary_subseq(result, 0, n);
     result = rb_ary_new2(n);
     args[0] = result; args[1] = (VALUE)n;
-    rb_block_call(obj, rb_intern("each"), 0, 0, take_i, (VALUE)args);
+    if (rb_check_block_call(obj, idEach, 0, 0, take_i, (VALUE)args) == Qundef)
+	rb_raise(rb_eTypeError, "wrong argument type %"PRIsVALUE" (must respond to :each)",
+		 rb_obj_class(obj));
     return result;
 }
 
 
 /*
  *  call-seq:
- *     array.zip(arg, ...)                   -> an_array
- *     array.zip(arg, ...) {| arr | block }  -> nil
- *  
- *  Converts any arguments to arrays, then merges elements of
- *  <i>self</i> with corresponding elements from each argument. This
- *  generates a sequence of <code>self.size</code> <em>n</em>-element
- *  arrays, where <em>n</em> is one more that the count of arguments. If
- *  the size of any argument is less than <code>enumObj.size</code>,
- *  <code>nil</code> values are supplied. If a block given, it is
- *  invoked for each output array, otherwise an array of arrays is
- *  returned.
- *     
- *     a = [ 4, 5, 6 ]
- *     b = [ 7, 8, 9 ]
- *     [1,2,3].zip(a, b)      #=> [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
- *     [1,2].zip(a,b)         #=> [[1, 4, 7], [2, 5, 8]]
- *     a.zip([1,2],[8])       #=> [[4,1,8], [5,2,nil], [6,nil,nil]]
+ *    array.zip(*other_arrays) -> new_array
+ *    array.zip(*other_arrays) {|other_array| ... } -> nil
+ *
+ *  When no block given, returns a new \Array +new_array+ of size <tt>self.size</tt>
+ *  whose elements are Arrays.
+ *
+ *  Each nested array <tt>new_array[n]</tt> is of size <tt>other_arrays.size+1</tt>,
+ *  and contains:
+ *  - The _nth_ element of +self+.
+ *  - The _nth_ element of each of the +other_arrays+.
+ *
+ *  If all +other_arrays+ and +self+ are the same size:
+ *    a = [:a0, :a1, :a2, :a3]
+ *    b = [:b0, :b1, :b2, :b3]
+ *    c = [:c0, :c1, :c2, :c3]
+ *    d = a.zip(b, c)
+ *    d # => [[:a0, :b0, :c0], [:a1, :b1, :c1], [:a2, :b2, :c2], [:a3, :b3, :c3]]
+ *
+ *  If any array in +other_arrays+ is smaller than +self+,
+ *  fills to <tt>self.size</tt> with +nil+:
+ *    a = [:a0, :a1, :a2, :a3]
+ *    b = [:b0, :b1, :b2]
+ *    c = [:c0, :c1]
+ *    d = a.zip(b, c)
+ *    d # => [[:a0, :b0, :c0], [:a1, :b1, :c1], [:a2, :b2, nil], [:a3, nil, nil]]
+ *
+ *  If any array in +other_arrays+ is larger than +self+,
+ *  its trailing elements are ignored:
+ *    a = [:a0, :a1, :a2, :a3]
+ *    b = [:b0, :b1, :b2, :b3, :b4]
+ *    c = [:c0, :c1, :c2, :c3, :c4, :c5]
+ *    d = a.zip(b, c)
+ *    d # => [[:a0, :b0, :c0], [:a1, :b1, :c1], [:a2, :b2, :c2], [:a3, :b3, :c3]]
+ *
+ *  When a block is given, calls the block with each of the sub-arrays (formed as above); returns nil
+ *    a = [:a0, :a1, :a2, :a3]
+ *    b = [:b0, :b1, :b2, :b3]
+ *    c = [:c0, :c1, :c2, :c3]
+ *    a.zip(b, c) {|sub_array| p sub_array} # => nil
+ *
+ *  Output:
+ *    [:a0, :b0, :c0]
+ *    [:a1, :b1, :c1]
+ *    [:a2, :b2, :c2]
+ *    [:a3, :b3, :c3]
  */
 
 static VALUE
 rb_ary_zip(int argc, VALUE *argv, VALUE ary)
 {
     int i, j;
-    long len;
+    long len = RARRAY_LEN(ary);
     VALUE result = Qnil;
 
-    len = RARRAY_LEN(ary);
     for (i=0; i<argc; i++) {
 	argv[i] = take_items(argv[i], len);
     }
-    if (!rb_block_given_p()) {
-	result = rb_ary_new2(len);
-    }
 
-    for (i=0; i<RARRAY_LEN(ary); i++) {
-	VALUE tmp = rb_ary_new2(argc+1);
+    if (rb_block_given_p()) {
+	int arity = rb_block_arity();
 
-	rb_ary_push(tmp, rb_ary_elt(ary, i));
-	for (j=0; j<argc; j++) {
-	    rb_ary_push(tmp, rb_ary_elt(argv[j], i));
-	}
-	if (NIL_P(result)) {
-	    rb_yield(tmp);
+	if (arity > 1) {
+	    VALUE work, *tmp;
+
+	    tmp = ALLOCV_N(VALUE, work, argc+1);
+
+	    for (i=0; i<RARRAY_LEN(ary); i++) {
+		tmp[0] = RARRAY_AREF(ary, i);
+		for (j=0; j<argc; j++) {
+		    tmp[j+1] = rb_ary_elt(argv[j], i);
+		}
+		rb_yield_values2(argc+1, tmp);
+	    }
+
+	    if (work) ALLOCV_END(work);
 	}
 	else {
+	    for (i=0; i<RARRAY_LEN(ary); i++) {
+		VALUE tmp = rb_ary_new2(argc+1);
+
+		rb_ary_push(tmp, RARRAY_AREF(ary, i));
+		for (j=0; j<argc; j++) {
+		    rb_ary_push(tmp, rb_ary_elt(argv[j], i));
+		}
+		rb_yield(tmp);
+	    }
+	}
+    }
+    else {
+	result = rb_ary_new_capa(len);
+
+	for (i=0; i<len; i++) {
+	    VALUE tmp = rb_ary_new_capa(argc+1);
+
+	    rb_ary_push(tmp, RARRAY_AREF(ary, i));
+	    for (j=0; j<argc; j++) {
+		rb_ary_push(tmp, rb_ary_elt(argv[j], i));
+	    }
 	    rb_ary_push(result, tmp);
 	}
     }
+
     return result;
 }
 
 /*
  *  call-seq:
- *     array.transpose -> an_array
- *  
- *  Assumes that <i>self</i> is an array of arrays and transposes the
- *  rows and columns.
- *     
- *     a = [[1,2], [3,4], [5,6]]
- *     a.transpose   #=> [[1, 3, 5], [2, 4, 6]]
+ *    array.transpose -> new_array
+ *
+ *  Transposes the rows and columns in an \Array of Arrays;
+ *  the nested Arrays must all be the same size:
+ *    a = [[:a0, :a1], [:b0, :b1], [:c0, :c1]]
+ *    a.transpose # => [[:a0, :b0, :c0], [:a1, :b1, :c1]]
  */
 
 static VALUE
@@ -2322,112 +4473,260 @@ rb_ary_transpose(VALUE ary)
 
 /*
  *  call-seq:
- *     array.replace(other_array)  -> array
- *  
- *  Replaces the contents of <i>self</i> with the contents of
- *  <i>other_array</i>, truncating or expanding if necessary.
- *     
- *     a = [ "a", "b", "c", "d", "e" ]
- *     a.replace([ "x", "y", "z" ])   #=> ["x", "y", "z"]
- *     a                              #=> ["x", "y", "z"]
+ *    array.replace(other_array) -> self
+ *
+ *  Replaces the content of +self+ with the content of +other_array+; returns +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.replace(['foo', :bar, 3]) # => ["foo", :bar, 3]
  */
 
 VALUE
 rb_ary_replace(VALUE copy, VALUE orig)
 {
-    orig = to_ary(orig);
     rb_ary_modify_check(copy);
+    orig = to_ary(orig);
     if (copy == orig) return copy;
 
     if (RARRAY_LEN(orig) <= RARRAY_EMBED_LEN_MAX) {
-        VALUE *ptr;
-        VALUE shared = 0;
-        
+        VALUE shared_root = 0;
+
         if (ARY_OWNS_HEAP_P(copy)) {
-            xfree(RARRAY_PTR(copy));
-        }
+            ary_heap_free(copy);
+	}
         else if (ARY_SHARED_P(copy)) {
-            shared = ARY_SHARED(copy);
+            shared_root = ARY_SHARED_ROOT(copy);
             FL_UNSET_SHARED(copy);
         }
         FL_SET_EMBED(copy);
-        ptr = RARRAY_PTR(orig);
-        MEMCPY(RARRAY_PTR(copy), ptr, VALUE, RARRAY_LEN(orig));
-        if (shared) {
-            rb_ary_decrement_share(shared);
+        ary_memcpy(copy, 0, RARRAY_LEN(orig), RARRAY_CONST_PTR_TRANSIENT(orig));
+        if (shared_root) {
+            rb_ary_decrement_share(shared_root);
         }
         ARY_SET_LEN(copy, RARRAY_LEN(orig));
     }
     else {
-        VALUE shared = ary_make_shared(orig);
+        VALUE shared_root = ary_make_shared(orig);
         if (ARY_OWNS_HEAP_P(copy)) {
-            xfree(RARRAY_PTR(copy));
-        } else {
+            ary_heap_free(copy);
+        }
+        else {
             rb_ary_unshare_safe(copy);
         }
         FL_UNSET_EMBED(copy);
-        ARY_SET_PTR(copy, RARRAY_PTR(orig));
-        ARY_SET_LEN(copy, RARRAY_LEN(orig));
-        rb_ary_set_shared(copy, shared);
+        ARY_SET_PTR(copy, ARY_HEAP_PTR(orig));
+        ARY_SET_LEN(copy, ARY_HEAP_LEN(orig));
+        rb_ary_set_shared(copy, shared_root);
     }
+    ary_verify(copy);
     return copy;
 }
 
-/* 
+/*
  *  call-seq:
- *     array.clear    ->  array
- *
- *  Removes all elements from _self_.
+ *     array.clear -> self
  *
- *     a = [ "a", "b", "c", "d", "e" ]
- *     a.clear    #=> [ ]
+ *  Removes all elements from +self+:
+ *    a = [:foo, 'bar', 2]
+ *    a.clear # => []
  */
 
 VALUE
 rb_ary_clear(VALUE ary)
 {
-    rb_ary_modify(ary);
-    ARY_SET_LEN(ary, 0);
-    if (ARY_DEFAULT_SIZE * 2 < ARY_CAPA(ary)) {
-	ary_resize_capa(ary, ARY_DEFAULT_SIZE * 2);
+    rb_ary_modify_check(ary);
+    if (ARY_SHARED_P(ary)) {
+	if (!ARY_EMBED_P(ary)) {
+	    rb_ary_unshare(ary);
+	    FL_SET_EMBED(ary);
+            ARY_SET_EMBED_LEN(ary, 0);
+	}
     }
+    else {
+        ARY_SET_LEN(ary, 0);
+        if (ARY_DEFAULT_SIZE * 2 < ARY_CAPA(ary)) {
+            ary_resize_capa(ary, ARY_DEFAULT_SIZE * 2);
+        }
+    }
+    ary_verify(ary);
     return ary;
 }
 
 /*
  *  call-seq:
- *     array.fill(obj)                                -> array
- *     array.fill(obj, start [, length])              -> array
- *     array.fill(obj, range )                        -> array
- *     array.fill {|index| block }                    -> array
- *     array.fill(start [, length] ) {|index| block } -> array
- *     array.fill(range) {|index| block }             -> array
- *  
- *  The first three forms set the selected elements of <i>self</i> (which
- *  may be the entire array) to <i>obj</i>. A <i>start</i> of
- *  <code>nil</code> is equivalent to zero. A <i>length</i> of
- *  <code>nil</code> is equivalent to <i>self.length</i>. The last three
- *  forms fill the array with the value of the block. The block is
- *  passed the absolute index of each element to be filled.
- *     
- *     a = [ "a", "b", "c", "d" ]
- *     a.fill("x")              #=> ["x", "x", "x", "x"]
- *     a.fill("z", 2, 2)        #=> ["x", "x", "z", "z"]
- *     a.fill("y", 0..1)        #=> ["y", "y", "z", "z"]
- *     a.fill {|i| i*i}         #=> [0, 1, 4, 9]
- *     a.fill(-2) {|i| i*i*i}   #=> [0, 1, 8, 27]
+ *    array.fill(obj) -> self
+ *    array.fill(obj, start) -> self
+ *    array.fill(obj, start, length) -> self
+ *    array.fill(obj, range) -> self
+ *    array.fill {|index| ... } -> self
+ *    array.fill(start) {|index| ... } -> self
+ *    array.fill(start, length) {|index| ... } -> self
+ *    array.fill(range) {|index| ... } -> self
+ *
+ *  Replaces specified elements in +self+ with specified objects; returns +self+.
+ *
+ *  With argument +obj+ and no block given, replaces all elements with that one object:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a # => ["a", "b", "c", "d"]
+ *    a.fill(:X) # => [:X, :X, :X, :X]
+ *
+ *  With arguments +obj+ and \Integer +start+, and no block given,
+ *  replaces elements based on the given start.
+ *
+ *  If +start+ is in range (<tt>0 <= start < array.size</tt>),
+ *  replaces all elements from offset +start+ through the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, 2) # => ["a", "b", :X, :X]
+ *
+ *  If +start+ is too large (<tt>start >= array.size</tt>), does nothing:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, 4) # => ["a", "b", "c", "d"]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, 5) # => ["a", "b", "c", "d"]
+ *
+ *  If +start+ is negative, counts from the end (starting index is <tt>start + array.size</tt>):
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, -2) # => ["a", "b", :X, :X]
+ *
+ *  If +start+ is too small (less than and far from zero), replaces all elements:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, -6) # => [:X, :X, :X, :X]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, -50) # => [:X, :X, :X, :X]
+ *
+ *  With arguments +obj+, \Integer +start+, and \Integer +length+, and no block given,
+ *  replaces elements based on the given +start+ and +length+.
+ *
+ *  If +start+ is in range, replaces +length+ elements beginning at offset +start+:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, 1, 1) # => ["a", :X, "c", "d"]
+ *
+ *  If +start+ is negative, counts from the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, -2, 1) # => ["a", "b", :X, "d"]
+ *
+ *  If +start+ is large (<tt>start >= array.size</tt>), extends +self+ with +nil+:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, 5, 0) # => ["a", "b", "c", "d", nil]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, 5, 2) # => ["a", "b", "c", "d", nil, :X, :X]
+ *
+ *  If +length+ is zero or negative, replaces no elements:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, 1, 0) # => ["a", "b", "c", "d"]
+ *    a.fill(:X, 1, -1) # => ["a", "b", "c", "d"]
+ *
+ *  With arguments +obj+ and \Range +range+, and no block given,
+ *  replaces elements based on the given range.
+ *
+ *  If the range is positive and ascending (<tt>0 < range.begin <= range.end</tt>),
+ *  replaces elements from <tt>range.begin</tt> to <tt>range.end</tt>:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, (1..1)) # => ["a", :X, "c", "d"]
+ *
+ *  If <tt>range.first</tt> is negative, replaces no elements:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, (-1..1)) # => ["a", "b", "c", "d"]
+ *
+ *  If <tt>range.last</tt> is negative, counts from the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, (0..-2)) # => [:X, :X, :X, "d"]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, (1..-2)) # => ["a", :X, :X, "d"]
+ *
+ *  If <tt>range.last</tt> and <tt>range.last</tt> are both negative,
+ *  both count from the end of the array:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, (-1..-1)) # => ["a", "b", "c", :X]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(:X, (-2..-2)) # => ["a", "b", :X, "d"]
+ *
+ *  With no arguments and a block given, calls the block with each index;
+ *  replaces the corresponding element with the block's return value:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill { |index| "new_#{index}" } # => ["new_0", "new_1", "new_2", "new_3"]
+ *
+ *  With argument +start+ and a block given, calls the block with each index
+ *  from offset +start+ to the end; replaces the corresponding element
+ *  with the block's return value:
+ *
+ *  If start is in range (<tt>0 <= start < array.size</tt>),
+ *  replaces from offset +start+ to the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(1) { |index| "new_#{index}" } # => ["a", "new_1", "new_2", "new_3"]
+ *
+ *  If +start+ is too large(<tt>start >= array.size</tt>), does nothing:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(4) { |index| fail 'Cannot happen' } # => ["a", "b", "c", "d"]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(4) { |index| fail 'Cannot happen' } # => ["a", "b", "c", "d"]
+ *
+ *  If +start+ is negative, counts from the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(-2) { |index| "new_#{index}" } # => ["a", "b", "new_2", "new_3"]
+ *
+ *  If start is too small (<tt>start <= -array.size</tt>, replaces all elements:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(-6) { |index| "new_#{index}" } # => ["new_0", "new_1", "new_2", "new_3"]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(-50) { |index| "new_#{index}" } # => ["new_0", "new_1", "new_2", "new_3"]
+ *
+ *  With arguments +start+ and +length+, and a block given,
+ *  calls the block for each index specified by start length;
+ *  replaces the corresponding element with the block's return value.
+ *
+ *  If +start+ is in range, replaces +length+ elements beginning at offset +start+:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(1, 1) { |index| "new_#{index}" } # => ["a", "new_1", "c", "d"]
+ *
+ *  If start is negative, counts from the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(-2, 1) { |index| "new_#{index}" } # => ["a", "b", "new_2", "d"]
+ *
+ *  If +start+ is large (<tt>start >= array.size</tt>), extends +self+ with +nil+:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(5, 0) { |index| "new_#{index}" } # => ["a", "b", "c", "d", nil]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(5, 2) { |index| "new_#{index}" } # => ["a", "b", "c", "d", nil, "new_5", "new_6"]
+ *
+ *  If +length+ is zero or less, replaces no elements:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(1, 0) { |index| "new_#{index}" } # => ["a", "b", "c", "d"]
+ *    a.fill(1, -1) { |index| "new_#{index}" } # => ["a", "b", "c", "d"]
+ *
+ *  With arguments +obj+ and +range+, and a block given,
+ *  calls the block with each index in the given range;
+ *  replaces the corresponding element with the block's return value.
+ *
+ *  If the range is positive and ascending (<tt>range 0 < range.begin <= range.end</tt>,
+ *  replaces elements from <tt>range.begin</tt> to <tt>range.end</tt>:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(1..1) { |index| "new_#{index}" } # => ["a", "new_1", "c", "d"]
+ *
+ *  If +range.first+ is negative, does nothing:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(-1..1) { |index| fail 'Cannot happen' } # => ["a", "b", "c", "d"]
+ *
+ *  If <tt>range.last</tt> is negative, counts from the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(0..-2) { |index| "new_#{index}" } # => ["new_0", "new_1", "new_2", "d"]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(1..-2) { |index| "new_#{index}" } # => ["a", "new_1", "new_2", "d"]
+ *
+ *  If <tt>range.first</tt> and <tt>range.last</tt> are both negative,
+ *  both count from the end:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(-1..-1) { |index| "new_#{index}" } # => ["a", "b", "c", "new_3"]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.fill(-2..-2) { |index| "new_#{index}" } # => ["a", "b", "new_2", "d"]
  */
 
 static VALUE
 rb_ary_fill(int argc, VALUE *argv, VALUE ary)
 {
-    VALUE item, arg1, arg2;
+    VALUE item = Qundef, arg1, arg2;
     long beg = 0, end = 0, len = 0;
-    VALUE *p, *pend;
-    int block_p = Qfalse;
 
     if (rb_block_given_p()) {
-	block_p = Qtrue;
 	rb_scan_args(argc, argv, "02", &arg1, &arg2);
 	argc += 1;		/* hackish */
     }
@@ -2465,96 +4764,124 @@ rb_ary_fill(int argc, VALUE *argv, VALUE ary)
 	if (end >= ARY_CAPA(ary)) {
 	    ary_resize_capa(ary, end);
 	}
-	rb_mem_clear(RARRAY_PTR(ary) + RARRAY_LEN(ary), end - RARRAY_LEN(ary));
+	ary_mem_clear(ary, RARRAY_LEN(ary), end - RARRAY_LEN(ary));
 	ARY_SET_LEN(ary, end);
     }
 
-    if (block_p) {
+    if (item == Qundef) {
 	VALUE v;
 	long i;
 
 	for (i=beg; i<end; i++) {
 	    v = rb_yield(LONG2NUM(i));
 	    if (i>=RARRAY_LEN(ary)) break;
-	    RARRAY_PTR(ary)[i] = v;
+	    ARY_SET(ary, i, v);
 	}
     }
     else {
-	p = RARRAY_PTR(ary) + beg;
-	pend = p + len;
-	while (p < pend) {
-	    *p++ = item;
-	}
+	ary_memfill(ary, beg, len, item);
     }
     return ary;
 }
 
-/* 
+/*
  *  call-seq:
- *     array + other_array   -> an_array
+ *    array + other_array -> new_array
+ *
+ *  Returns a new \Array containing all elements of +array+
+ *  followed by all elements of +other_array+:
+ *    a = [0, 1] + [2, 3]
+ *    a # => [0, 1, 2, 3]
  *
- *  Concatenation---Returns a new array built by concatenating the
- *  two arrays together to produce a third array.
- * 
- *     [ 1, 2, 3 ] + [ 4, 5 ]    #=> [ 1, 2, 3, 4, 5 ]
+ *  Related: #concat.
  */
 
 VALUE
 rb_ary_plus(VALUE x, VALUE y)
 {
     VALUE z;
-    long len;
+    long len, xlen, ylen;
 
     y = to_ary(y);
-    len = RARRAY_LEN(x) + RARRAY_LEN(y);
+    xlen = RARRAY_LEN(x);
+    ylen = RARRAY_LEN(y);
+    len = xlen + ylen;
     z = rb_ary_new2(len);
-    MEMCPY(RARRAY_PTR(z), RARRAY_PTR(x), VALUE, RARRAY_LEN(x));
-    MEMCPY(RARRAY_PTR(z) + RARRAY_LEN(x), RARRAY_PTR(y), VALUE, RARRAY_LEN(y));
+
+    ary_memcpy(z, 0, xlen, RARRAY_CONST_PTR_TRANSIENT(x));
+    ary_memcpy(z, xlen, ylen, RARRAY_CONST_PTR_TRANSIENT(y));
     ARY_SET_LEN(z, len);
     return z;
 }
 
-/* 
+static VALUE
+ary_append(VALUE x, VALUE y)
+{
+    long n = RARRAY_LEN(y);
+    if (n > 0) {
+        rb_ary_splice(x, RARRAY_LEN(x), 0, RARRAY_CONST_PTR_TRANSIENT(y), n);
+    }
+    RB_GC_GUARD(y);
+    return x;
+}
+
+/*
  *  call-seq:
- *     array.concat(other_array)   ->  array
+ *    array.concat(*other_arrays) -> self
  *
- *  Appends the elements in other_array to _self_.
- *  
- *     [ "a", "b" ].concat( ["c", "d"] ) #=> [ "a", "b", "c", "d" ]
+ *  Adds to +array+ all elements from each \Array in +other_arrays+; returns +self+:
+ *    a = [0, 1]
+ *    a.concat([2, 3], [4, 5]) # => [0, 1, 2, 3, 4, 5]
  */
 
+static VALUE
+rb_ary_concat_multi(int argc, VALUE *argv, VALUE ary)
+{
+    rb_ary_modify_check(ary);
+
+    if (argc == 1) {
+	rb_ary_concat(ary, argv[0]);
+    }
+    else if (argc > 1) {
+	int i;
+	VALUE args = rb_ary_tmp_new(argc);
+	for (i = 0; i < argc; i++) {
+	    rb_ary_concat(args, argv[i]);
+	}
+	ary_append(ary, args);
+    }
+
+    ary_verify(ary);
+    return ary;
+}
 
 VALUE
 rb_ary_concat(VALUE x, VALUE y)
 {
-    y = to_ary(y);
-    if (RARRAY_LEN(y) > 0) {
-	rb_ary_splice(x, RARRAY_LEN(x), 0, y);
-    }
-    return x;
+    return ary_append(x, to_ary(y));
 }
 
-
-/* 
+/*
  *  call-seq:
- *     array * int     ->    an_array
- *     array * str     ->    a_string
- *
- *  Repetition---With a String argument, equivalent to
- *  self.join(str). Otherwise, returns a new array
- *  built by concatenating the _int_ copies of _self_.
+ *    array * n -> new_array
+ *    array * string_separator -> new_string
  *
+ *  When non-negative argument \Integer +n+ is given,
+ *  returns a new \Array built by concatenating the +n+ copies of +self+:
+ *    a = ['x', 'y']
+ *    a * 3 # => ["x", "y", "x", "y", "x", "y"]
  *
- *     [ 1, 2, 3 ] * 3    #=> [ 1, 2, 3, 1, 2, 3, 1, 2, 3 ]
- *     [ 1, 2, 3 ] * ","  #=> "1,2,3"
- *
+ *  When \String argument +string_separator+ is given,
+ *  equivalent to <tt>array.join(string_separator)</tt>:
+ *    [0, [0, 1], {foo: 0}] * ', ' # => "0, 0, 1, {:foo=>0}"
  */
 
 static VALUE
 rb_ary_times(VALUE ary, VALUE times)
 {
     VALUE ary2, tmp;
-    long i, len;
+    const VALUE *ptr;
+    long t, len;
 
     tmp = rb_check_string_type(times);
     if (!NIL_P(tmp)) {
@@ -2563,7 +4890,7 @@ rb_ary_times(VALUE ary, VALUE times)
 
     len = NUM2LONG(times);
     if (len == 0) {
-	ary2 = ary_new(rb_obj_class(ary), 0);
+        ary2 = ary_new(rb_cArray, 0);
 	goto out;
     }
     if (len < 0) {
@@ -2574,36 +4901,37 @@ rb_ary_times(VALUE ary, VALUE times)
     }
     len *= RARRAY_LEN(ary);
 
-    ary2 = ary_new(rb_obj_class(ary), len);
+    ary2 = ary_new(rb_cArray, len);
     ARY_SET_LEN(ary2, len);
 
-    for (i=0; i<len; i+=RARRAY_LEN(ary)) {
-	MEMCPY(RARRAY_PTR(ary2)+i, RARRAY_PTR(ary), VALUE, RARRAY_LEN(ary));
+    ptr = RARRAY_CONST_PTR_TRANSIENT(ary);
+    t = RARRAY_LEN(ary);
+    if (0 < t) {
+	ary_memcpy(ary2, 0, t, ptr);
+	while (t <= len/2) {
+            ary_memcpy(ary2, t, t, RARRAY_CONST_PTR_TRANSIENT(ary2));
+            t *= 2;
+        }
+        if (t < len) {
+            ary_memcpy(ary2, t, len-t, RARRAY_CONST_PTR_TRANSIENT(ary2));
+        }
     }
   out:
-    OBJ_INFECT(ary2, ary);
-
     return ary2;
 }
 
-/* 
+/*
  *  call-seq:
- *     array.assoc(obj)   ->  an_array  or  nil
+ *    array.assoc(obj) -> found_array or nil
+ *
+ *  Returns the first element in +self+ that is an \Array
+ *  whose first element <tt>==</tt> +obj+:
+ *    a = [{foo: 0}, [2, 4], [4, 5, 6], [4, 5]]
+ *    a.assoc(4) # => [4, 5, 6]
  *
- *  Searches through an array whose elements are also arrays
- *  comparing _obj_ with the first element of each contained array
- *  using obj.==.
- *  Returns the first contained array that matches (that
- *  is, the first associated array),
- *  or +nil+ if no match is found.
- *  See also <code>Array#rassoc</code>.
+ *  Returns +nil+ if no such element is found.
  *
- *     s1 = [ "colors", "red", "blue", "green" ]
- *     s2 = [ "letters", "a", "b", "c" ]
- *     s3 = "foo"
- *     a  = [ s1, s2, s3 ]
- *     a.assoc("letters")  #=> [ "letters", "a", "b", "c" ]
- *     a.assoc("foo")      #=> nil
+ *  Related: #rassoc.
  */
 
 VALUE
@@ -2613,9 +4941,9 @@ rb_ary_assoc(VALUE ary, VALUE key)
     VALUE v;
 
     for (i = 0; i < RARRAY_LEN(ary); ++i) {
-	v = rb_check_array_type(RARRAY_PTR(ary)[i]);
+	v = rb_check_array_type(RARRAY_AREF(ary, i));
 	if (!NIL_P(v) && RARRAY_LEN(v) > 0 &&
-	    rb_equal(RARRAY_PTR(v)[0], key))
+	    rb_equal(RARRAY_AREF(v, 0), key))
 	    return v;
     }
     return Qnil;
@@ -2623,16 +4951,16 @@ rb_ary_assoc(VALUE ary, VALUE key)
 
 /*
  *  call-seq:
- *     array.rassoc(obj) -> an_array or nil
- *  
- *  Searches through the array whose elements are also arrays. Compares
- *  _obj_ with the second element of each contained array using
- *  <code>==</code>. Returns the first contained array that matches. See
- *  also <code>Array#assoc</code>.
- *     
- *     a = [ [ 1, "one"], [2, "two"], [3, "three"], ["ii", "two"] ]
- *     a.rassoc("two")    #=> [2, "two"]
- *     a.rassoc("four")   #=> nil
+ *    array.rassoc(obj) -> found_array or nil
+ *
+ *  Returns the first element in +self+ that is an \Array
+ *  whose second element <tt>==</tt> +obj+:
+ *    a = [{foo: 0}, [2, 4], [4, 5, 6], [4, 5]]
+ *    a.rassoc(4) # => [2, 4]
+ *
+ *  Returns +nil+ if no such element is found.
+ *
+ *  Related: #assoc.
  */
 
 VALUE
@@ -2642,10 +4970,10 @@ rb_ary_rassoc(VALUE ary, VALUE value)
     VALUE v;
 
     for (i = 0; i < RARRAY_LEN(ary); ++i) {
-	v = RARRAY_PTR(ary)[i];
-	if (TYPE(v) == T_ARRAY &&
+	v = RARRAY_AREF(ary, i);
+	if (RB_TYPE_P(v, T_ARRAY) &&
 	    RARRAY_LEN(v) > 1 &&
-	    rb_equal(RARRAY_PTR(v)[1], value))
+	    rb_equal(RARRAY_AREF(v, 1), value))
 	    return v;
     }
     return Qnil;
@@ -2654,42 +4982,67 @@ rb_ary_rassoc(VALUE ary, VALUE value)
 static VALUE
 recursive_equal(VALUE ary1, VALUE ary2, int recur)
 {
-    long i;
-
-    if (recur) return Qfalse;
-    for (i=0; i<RARRAY_LEN(ary1); i++) {
-	if (!rb_equal(rb_ary_elt(ary1, i), rb_ary_elt(ary2, i)))
-	    return Qfalse;
+    long i, len1;
+    const VALUE *p1, *p2;
+
+    if (recur) return Qtrue; /* Subtle! */
+
+    /* rb_equal() can evacuate ptrs */
+    p1 = RARRAY_CONST_PTR(ary1);
+    p2 = RARRAY_CONST_PTR(ary2);
+    len1 = RARRAY_LEN(ary1);
+
+    for (i = 0; i < len1; i++) {
+	if (*p1 != *p2) {
+	    if (rb_equal(*p1, *p2)) {
+		len1 = RARRAY_LEN(ary1);
+		if (len1 != RARRAY_LEN(ary2))
+		    return Qfalse;
+		if (len1 < i)
+		    return Qtrue;
+                p1 = RARRAY_CONST_PTR(ary1) + i;
+                p2 = RARRAY_CONST_PTR(ary2) + i;
+	    }
+	    else {
+		return Qfalse;
+	    }
+	}
+	p1++;
+	p2++;
     }
     return Qtrue;
 }
 
-/* 
+/*
  *  call-seq:
- *     array == other_array   ->   bool
+ *    array == other_array -> true or false
  *
- *  Equality---Two arrays are equal if they contain the same number
- *  of elements and if each element is equal to (according to
- *  Object.==) the corresponding element in the other array.
+ *  Returns +true+ if both <tt>array.size == other_array.size</tt>
+ *  and for each index +i+ in +array+, <tt>array[i] == other_array[i]</tt>:
+ *    a0 = [:foo, 'bar', 2]
+ *    a1 = [:foo, 'bar', 2.0]
+ *    a1 == a0 # => true
+ *    [] == [] # => true
  *
- *     [ "a", "c" ]    == [ "a", "c", 7 ]     #=> false
- *     [ "a", "c", 7 ] == [ "a", "c", 7 ]     #=> true
- *     [ "a", "c", 7 ] == [ "a", "d", "f" ]   #=> false
+ *  Otherwise, returns +false+.
  *
+ *  This method is different from method Array#eql?,
+ *  which compares elements using <tt>Object#eql?</tt>.
  */
 
 static VALUE
 rb_ary_equal(VALUE ary1, VALUE ary2)
 {
     if (ary1 == ary2) return Qtrue;
-    if (TYPE(ary2) != T_ARRAY) {
-	if (!rb_respond_to(ary2, rb_intern("to_ary"))) {
+    if (!RB_TYPE_P(ary2, T_ARRAY)) {
+	if (!rb_respond_to(ary2, idTo_ary)) {
 	    return Qfalse;
 	}
 	return rb_equal(ary2, ary1);
     }
     if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return Qfalse;
-    return rb_exec_recursive(recursive_equal, ary1, ary2);
+    if (RARRAY_CONST_PTR_TRANSIENT(ary1) == RARRAY_CONST_PTR_TRANSIENT(ary2)) return Qtrue;
+    return rb_exec_recursive_paired(recursive_equal, ary1, ary2, ary2);
 }
 
 static VALUE
@@ -2697,7 +5050,7 @@ recursive_eql(VALUE ary1, VALUE ary2, int recur)
 {
     long i;
 
-    if (recur) return Qfalse;
+    if (recur) return Qtrue; /* Subtle! */
     for (i=0; i<RARRAY_LEN(ary1); i++) {
 	if (!rb_eql(rb_ary_elt(ary1, i), rb_ary_elt(ary2, i)))
 	    return Qfalse;
@@ -2707,92 +5060,111 @@ recursive_eql(VALUE ary1, VALUE ary2, int recur)
 
 /*
  *  call-seq:
- *     array.eql?(other)  -> true or false
+ *    array.eql? other_array -> true or false
+ *
+ *  Returns +true+ if +self+ and +other_array+ are the same size,
+ *  and if, for each index +i+ in +self+, <tt>self[i].eql? other_array[i]</tt>:
+ *    a0 = [:foo, 'bar', 2]
+ *    a1 = [:foo, 'bar', 2]
+ *    a1.eql?(a0) # => true
+ *
+ *  Otherwise, returns +false+.
  *
- *  Returns <code>true</code> if _array_ and _other_ are the same object,
- *  or are both arrays with the same content.
+ *  This method is different from method {Array#==}[#method-i-3D-3D],
+ *  which compares using method <tt>Object#==</tt>.
  */
 
 static VALUE
 rb_ary_eql(VALUE ary1, VALUE ary2)
 {
     if (ary1 == ary2) return Qtrue;
-    if (TYPE(ary2) != T_ARRAY) return Qfalse;
+    if (!RB_TYPE_P(ary2, T_ARRAY)) return Qfalse;
     if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return Qfalse;
-    return rb_exec_recursive(recursive_eql, ary1, ary2);
-}
-
-static VALUE
-recursive_hash(VALUE ary, VALUE dummy, int recur)
-{
-    long i, h;
-    VALUE n;
-
-    if (recur) {
-	return LONG2FIX(0);
-    }
-    h = RARRAY_LEN(ary);
-    for (i=0; i<RARRAY_LEN(ary); i++) {
-	h = (h << 1) | (h<0 ? 1 : 0);
-	n = rb_hash(RARRAY_PTR(ary)[i]);
-	h ^= NUM2LONG(n);
-    }
-    return LONG2FIX(h);
+    if (RARRAY_CONST_PTR_TRANSIENT(ary1) == RARRAY_CONST_PTR_TRANSIENT(ary2)) return Qtrue;
+    return rb_exec_recursive_paired(recursive_eql, ary1, ary2, ary2);
 }
 
 /*
  *  call-seq:
- *     array.hash   -> fixnum
+ *    array.hash -> integer
+ *
+ *  Returns the integer hash value for +self+.
  *
- *  Compute a hash-code for this array. Two arrays with the same content
- *  will have the same hash code (and will compare using <code>eql?</code>).
+ *  Two arrays with the same content will have the same hash code (and will compare using eql?):
+ *    [0, 1, 2].hash == [0, 1, 2].hash # => true
+ *    [0, 1, 2].hash == [0, 1, 3].hash # => false
  */
 
 static VALUE
 rb_ary_hash(VALUE ary)
 {
-    return rb_exec_recursive(recursive_hash, ary, 0);
+    long i;
+    st_index_t h;
+    VALUE n;
+
+    h = rb_hash_start(RARRAY_LEN(ary));
+    h = rb_hash_uint(h, (st_index_t)rb_ary_hash);
+    for (i=0; i<RARRAY_LEN(ary); i++) {
+	n = rb_hash(RARRAY_AREF(ary, i));
+	h = rb_hash_uint(h, NUM2LONG(n));
+    }
+    h = rb_hash_end(h);
+    return ST2FIX(h);
 }
 
 /*
  *  call-seq:
- *     array.include?(obj)   -> true or false
- *  
- *  Returns <code>true</code> if the given object is present in
- *  <i>self</i> (that is, if any object <code>==</code> <i>anObject</i>),
- *  <code>false</code> otherwise.
- *     
- *     a = [ "a", "b", "c" ]
- *     a.include?("b")   #=> true
- *     a.include?("z")   #=> false
+ *    array.include?(obj) -> true or false
+ *
+ *  Returns +true+ if for some index +i+ in +self+, <tt>obj == self[i]</tt>;
+ *  otherwise +false+:
+ *    [0, 1, 2].include?(2) # => true
+ *    [0, 1, 2].include?(3) # => false
  */
 
 VALUE
 rb_ary_includes(VALUE ary, VALUE item)
 {
     long i;
-    
+    VALUE e;
+
     for (i=0; i<RARRAY_LEN(ary); i++) {
-	if (rb_equal(RARRAY_PTR(ary)[i], item)) {
+	e = RARRAY_AREF(ary, i);
+	if (rb_equal(e, item)) {
 	    return Qtrue;
 	}
     }
     return Qfalse;
 }
 
+static VALUE
+rb_ary_includes_by_eql(VALUE ary, VALUE item)
+{
+    long i;
+    VALUE e;
+
+    for (i=0; i<RARRAY_LEN(ary); i++) {
+	e = RARRAY_AREF(ary, i);
+	if (rb_eql(item, e)) {
+	    return Qtrue;
+	}
+    }
+    return Qfalse;
+}
 
 static VALUE
 recursive_cmp(VALUE ary1, VALUE ary2, int recur)
 {
     long i, len;
 
-    if (recur) return Qnil;
+    if (recur) return Qundef;	/* Subtle! */
     len = RARRAY_LEN(ary1);
     if (len > RARRAY_LEN(ary2)) {
 	len = RARRAY_LEN(ary2);
     }
     for (i=0; i<len; i++) {
-	VALUE v = rb_funcall(rb_ary_elt(ary1, i), id_cmp, 1, rb_ary_elt(ary2, i));
+	VALUE e1 = rb_ary_elt(ary1, i), e2 = rb_ary_elt(ary2, i);
+	VALUE v = rb_funcallv(e1, id_cmp, 1, &e2);
 	if (v != INT2FIX(0)) {
 	    return v;
 	}
@@ -2800,24 +5172,26 @@ recursive_cmp(VALUE ary1, VALUE ary2, int recur)
     return Qundef;
 }
 
-/* 
+/*
  *  call-seq:
- *     array <=> other_array   ->  -1, 0, +1
+ *    array <=> other_array -> -1, 0, or 1
+ *
+ *  Returns -1, 0, or 1 as +self+ is less than, equal to, or greater than +other_array+.
+ *  For each index +i+ in +self+, evaluates <tt>result = self[i] <=> other_array[i]</tt>.
  *
- *  Comparison---Returns an integer (-1, 0,
- *  or +1) if this array is less than, equal to, or greater than
- *  other_array.  Each object in each array is compared
- *  (using <=>). If any value isn't
- *  equal, then that inequality is the return value. If all the
- *  values found are equal, then the return is based on a
- *  comparison of the array lengths.  Thus, two arrays are
- *  ``equal'' according to <code>Array#<=></code> if and only if they have
- *  the same length and the value of each element is equal to the
- *  value of the corresponding element in the other array.
- *  
- *     [ "a", "a", "c" ]    <=> [ "a", "b", "c" ]   #=> -1
- *     [ 1, 2, 3, 4, 5, 6 ] <=> [ 1, 2 ]            #=> +1
+ *  Returns -1 if any result is -1:
+ *    [0, 1, 2] <=> [0, 1, 3] # => -1
  *
+ *  Returns 1 if any result is 1:
+ *    [0, 1, 2] <=> [0, 1, 1] # => 1
+ *
+ *  When all results are zero:
+ *  - Returns -1 if +array+ is smaller than +other_array+:
+ *      [0, 1, 2] <=> [0, 1, 2, 3] # => -1
+ *  - Returns 1 if +array+ is larger than +other_array+:
+ *      [0, 1, 2] <=> [0, 1] # => 1
+ *  - Returns 0 if +array+ and +other_array+ are the same size:
+ *      [0, 1, 2] <=> [0, 1, 2] # => 0
  */
 
 VALUE
@@ -2826,9 +5200,10 @@ rb_ary_cmp(VALUE ary1, VALUE ary2)
     long len;
     VALUE v;
 
-    ary2 = to_ary(ary2);
+    ary2 = rb_check_array_type(ary2);
+    if (NIL_P(ary2)) return Qnil;
     if (ary1 == ary2) return INT2FIX(0);
-    v = rb_exec_recursive(recursive_cmp, ary1, ary2);
+    v = rb_exec_recursive_paired(recursive_cmp, ary1, ary2, ary2);
     if (v != Qundef) return v;
     len = RARRAY_LEN(ary1) - RARRAY_LEN(ary2);
     if (len == 0) return INT2FIX(0);
@@ -2837,186 +5212,825 @@ rb_ary_cmp(VALUE ary1, VALUE ary2)
 }
 
 static VALUE
-ary_make_hash(VALUE ary1, VALUE ary2)
+ary_add_hash(VALUE hash, VALUE ary)
 {
-    VALUE hash = rb_hash_new();
     long i;
 
-    for (i=0; i<RARRAY_LEN(ary1); i++) {
-	rb_hash_aset(hash, RARRAY_PTR(ary1)[i], Qtrue);
+    for (i=0; i<RARRAY_LEN(ary); i++) {
+	VALUE elt = RARRAY_AREF(ary, i);
+	rb_hash_add_new_element(hash, elt, elt);
     }
-    if (ary2) {
-	for (i=0; i<RARRAY_LEN(ary2); i++) {
-	    rb_hash_aset(hash, RARRAY_PTR(ary2)[i], Qtrue);
-	}
+    return hash;
+}
+
+static inline VALUE
+ary_tmp_hash_new(VALUE ary)
+{
+    long size = RARRAY_LEN(ary);
+    VALUE hash = rb_hash_new_with_size(size);
+
+    RBASIC_CLEAR_CLASS(hash);
+    return hash;
+}
+
+static VALUE
+ary_make_hash(VALUE ary)
+{
+    VALUE hash = ary_tmp_hash_new(ary);
+    return ary_add_hash(hash, ary);
+}
+
+static VALUE
+ary_add_hash_by(VALUE hash, VALUE ary)
+{
+    long i;
+
+    for (i = 0; i < RARRAY_LEN(ary); ++i) {
+	VALUE v = rb_ary_elt(ary, i), k = rb_yield(v);
+	rb_hash_add_new_element(hash, k, v);
     }
     return hash;
 }
 
-/* 
+static VALUE
+ary_make_hash_by(VALUE ary)
+{
+    VALUE hash = ary_tmp_hash_new(ary);
+    return ary_add_hash_by(hash, ary);
+}
+
+static inline void
+ary_recycle_hash(VALUE hash)
+{
+    assert(RBASIC_CLASS(hash) == 0);
+    if (RHASH_ST_TABLE_P(hash)) {
+        st_table *tbl = RHASH_ST_TABLE(hash);
+	st_free_table(tbl);
+        RHASH_ST_CLEAR(hash);
+    }
+}
+
+/*
  *  call-seq:
- *     array - other_array    -> an_array
+ *    array - other_array -> new_array
  *
- *  Array Difference---Returns a new array that is a copy of
- *  the original array, removing any items that also appear in
- *  other_array. (If you need set-like behavior, see the
- *  library class Set.)
+ *  Returns a new \Array containing only those elements from +array+
+ *  that are not found in \Array +other_array+;
+ *  items are compared using <tt>eql?</tt>;
+ *  the order from +array+ is preserved:
+ *    [0, 1, 1, 2, 1, 1, 3, 1, 1] - [1] # => [0, 2, 3]
+ *    [0, 1, 2, 3] - [3, 0] # => [1, 2]
+ *    [0, 1, 2] - [4] # => [0, 1, 2]
  *
- *     [ 1, 1, 2, 2, 3, 3, 4, 5 ] - [ 1, 2, 4 ]  #=>  [ 3, 3, 5 ]
+ *  Related: Array#difference.
  */
 
 static VALUE
 rb_ary_diff(VALUE ary1, VALUE ary2)
 {
     VALUE ary3;
-    volatile VALUE hash;
+    VALUE hash;
     long i;
 
-    hash = ary_make_hash(to_ary(ary2), 0);
+    ary2 = to_ary(ary2);
     ary3 = rb_ary_new();
 
+    if (RARRAY_LEN(ary1) <= SMALL_ARRAY_LEN || RARRAY_LEN(ary2) <= SMALL_ARRAY_LEN) {
+	for (i=0; i<RARRAY_LEN(ary1); i++) {
+	    VALUE elt = rb_ary_elt(ary1, i);
+	    if (rb_ary_includes_by_eql(ary2, elt)) continue;
+	    rb_ary_push(ary3, elt);
+	}
+	return ary3;
+    }
+
+    hash = ary_make_hash(ary2);
     for (i=0; i<RARRAY_LEN(ary1); i++) {
-	if (st_lookup(RHASH_TBL(hash), RARRAY_PTR(ary1)[i], 0)) continue;
+        if (rb_hash_stlike_lookup(hash, RARRAY_AREF(ary1, i), NULL)) continue;
 	rb_ary_push(ary3, rb_ary_elt(ary1, i));
     }
+    ary_recycle_hash(hash);
     return ary3;
 }
 
-/* 
+/*
  *  call-seq:
- *     array & other_array
+ *    array.difference(*other_arrays) -> new_array
+ *
+ *  Returns a new \Array containing only those elements from +self+
+ *  that are not found in any of the Arrays +other_arrays+;
+ *  items are compared using <tt>eql?</tt>;  order from +self+ is preserved:
+ *    [0, 1, 1, 2, 1, 1, 3, 1, 1].difference([1]) # => [0, 2, 3]
+ *    [0, 1, 2, 3].difference([3, 0], [1, 3]) # => [2]
+ *    [0, 1, 2].difference([4]) # => [0, 1, 2]
  *
- *  Set Intersection---Returns a new array
- *  containing elements common to the two arrays, with no duplicates.
+ *  Returns a copy of +self+ if no arguments given.
  *
- *     [ 1, 1, 3, 5 ] & [ 1, 2, 3 ]   #=> [ 1, 3 ]
+ *  Related: Array#-.
+ */
+
+static VALUE
+rb_ary_difference_multi(int argc, VALUE *argv, VALUE ary)
+{
+    VALUE ary_diff;
+    long i, length;
+    volatile VALUE t0;
+    bool *is_hash = ALLOCV_N(bool, t0, argc);
+    ary_diff = rb_ary_new();
+    length = RARRAY_LEN(ary);
+
+    for (i = 0; i < argc; i++) {
+        argv[i] = to_ary(argv[i]);
+        is_hash[i] = (length > SMALL_ARRAY_LEN && RARRAY_LEN(argv[i]) > SMALL_ARRAY_LEN);
+        if (is_hash[i]) argv[i] = ary_make_hash(argv[i]);
+    }
+
+    for (i = 0; i < RARRAY_LEN(ary); i++) {
+        int j;
+        VALUE elt = rb_ary_elt(ary, i);
+        for (j = 0; j < argc; j++) {
+            if (is_hash[j]) {
+                if (rb_hash_stlike_lookup(argv[j], RARRAY_AREF(ary, i), NULL))
+                    break;
+            }
+            else {
+                if (rb_ary_includes_by_eql(argv[j], elt)) break;
+            }
+        }
+        if (j == argc) rb_ary_push(ary_diff, elt);
+    }
+
+    ALLOCV_END(t0);
+
+    return ary_diff;
+}
+
+
+/*
+ *  call-seq:
+ *    array & other_array -> new_array
+ *
+ *  Returns a new \Array containing each element found in both +array+ and \Array +other_array+;
+ *  duplicates are omitted; items are compared using <tt>eql?</tt>:
+ *    [0, 1, 2, 3] & [1, 2] # => [1, 2]
+ *    [0, 1, 0, 1] & [0, 1] # => [0, 1]
+ *
+ *  Preserves order from +array+:
+ *    [0, 1, 2] & [3, 2, 1, 0] # => [0, 1, 2]
+ *
+ *  Related: Array#intersection.
  */
 
 
 static VALUE
 rb_ary_and(VALUE ary1, VALUE ary2)
 {
-    VALUE hash, ary3, v, vv;
+    VALUE hash, ary3, v;
+    st_data_t vv;
     long i;
 
     ary2 = to_ary(ary2);
-    ary3 = rb_ary_new2(RARRAY_LEN(ary1) < RARRAY_LEN(ary2) ?
-	    RARRAY_LEN(ary1) : RARRAY_LEN(ary2));
-    hash = ary_make_hash(ary2, 0);
+    ary3 = rb_ary_new();
+    if (RARRAY_LEN(ary1) == 0 || RARRAY_LEN(ary2) == 0) return ary3;
+
+    if (RARRAY_LEN(ary1) <= SMALL_ARRAY_LEN && RARRAY_LEN(ary2) <= SMALL_ARRAY_LEN) {
+	for (i=0; i<RARRAY_LEN(ary1); i++) {
+	    v = RARRAY_AREF(ary1, i);
+	    if (!rb_ary_includes_by_eql(ary2, v)) continue;
+	    if (rb_ary_includes_by_eql(ary3, v)) continue;
+	    rb_ary_push(ary3, v);
+	}
+	return ary3;
+    }
 
-    if (RHASH_EMPTY_P(hash))
-        return ary3;
+    hash = ary_make_hash(ary2);
 
     for (i=0; i<RARRAY_LEN(ary1); i++) {
-	v = vv = rb_ary_elt(ary1, i);
-	if (st_delete(RHASH_TBL(hash), (st_data_t*)&vv, 0)) {
+	v = RARRAY_AREF(ary1, i);
+	vv = (st_data_t)v;
+        if (rb_hash_stlike_delete(hash, &vv, 0)) {
 	    rb_ary_push(ary3, v);
 	}
     }
+    ary_recycle_hash(hash);
 
     return ary3;
 }
 
-/* 
+/*
  *  call-seq:
- *     array | other_array     ->  an_array
+ *    array.intersection(*other_arrays) -> new_array
+ *
+ *  Returns a new \Array containing each element found both in +self+
+ *  and in all of the given Arrays +other_arrays+;
+ *  duplicates are omitted; items are compared using <tt>eql?</tt>:
+ *    [0, 1, 2, 3].intersection([0, 1, 2], [0, 1, 3]) # => [0, 1]
+ *    [0, 0, 1, 1, 2, 3].intersection([0, 1, 2], [0, 1, 3]) # => [0, 1]
  *
- *  Set Union---Returns a new array by joining this array with
- *  other_array, removing duplicates.
+ *  Preserves order from +self+:
+ *    [0, 1, 2].intersection([2, 1, 0]) # => [0, 1, 2]
  *
- *     [ "a", "b", "c" ] | [ "c", "d", "a" ]
- *            #=> [ "a", "b", "c", "d" ]
+ *  Returns a copy of +self+ if no arguments given.
+ *
+ *  Related: Array#&.
+ */
+
+static VALUE
+rb_ary_intersection_multi(int argc, VALUE *argv, VALUE ary)
+{
+    VALUE result = rb_ary_dup(ary);
+    int i;
+
+    for (i = 0; i < argc; i++) {
+        result = rb_ary_and(result, argv[i]);
+    }
+
+    return result;
+}
+
+static int
+ary_hash_orset(st_data_t *key, st_data_t *value, st_data_t arg, int existing)
+{
+    if (existing) return ST_STOP;
+    *key = *value = (VALUE)arg;
+    return ST_CONTINUE;
+}
+
+static void
+rb_ary_union(VALUE ary_union, VALUE ary)
+{
+    long i;
+    for (i = 0; i < RARRAY_LEN(ary); i++) {
+        VALUE elt = rb_ary_elt(ary, i);
+        if (rb_ary_includes_by_eql(ary_union, elt)) continue;
+        rb_ary_push(ary_union, elt);
+    }
+}
+
+static void
+rb_ary_union_hash(VALUE hash, VALUE ary2)
+{
+    long i;
+    for (i = 0; i < RARRAY_LEN(ary2); i++) {
+        VALUE elt = RARRAY_AREF(ary2, i);
+        if (!rb_hash_stlike_update(hash, (st_data_t)elt, ary_hash_orset, (st_data_t)elt)) {
+            RB_OBJ_WRITTEN(hash, Qundef, elt);
+        }
+    }
+}
+
+/*
+ *  call-seq:
+ *    array | other_array -> new_array
+ *
+ *  Returns the union of +array+ and \Array +other_array+;
+ *  duplicates are removed; order is preserved;
+ *  items are compared using <tt>eql?</tt>:
+ *    [0, 1] | [2, 3] # => [0, 1, 2, 3]
+ *    [0, 1, 1] | [2, 2, 3] # => [0, 1, 2, 3]
+ *    [0, 1, 2] | [3, 2, 1, 0] # => [0, 1, 2, 3]
+ *
+ *  Related: Array#union.
  */
 
 static VALUE
 rb_ary_or(VALUE ary1, VALUE ary2)
 {
     VALUE hash, ary3;
-    VALUE v, vv;
-    long i;
 
     ary2 = to_ary(ary2);
-    ary3 = rb_ary_new2(RARRAY_LEN(ary1)+RARRAY_LEN(ary2));
-    hash = ary_make_hash(ary1, ary2);
+    if (RARRAY_LEN(ary1) + RARRAY_LEN(ary2) <= SMALL_ARRAY_LEN) {
+	ary3 = rb_ary_new();
+        rb_ary_union(ary3, ary1);
+        rb_ary_union(ary3, ary2);
+	return ary3;
+    }
 
-    for (i=0; i<RARRAY_LEN(ary1); i++) {
-	v = vv = rb_ary_elt(ary1, i);
-	if (st_delete(RHASH_TBL(hash), (st_data_t*)&vv, 0)) {
-	    rb_ary_push(ary3, v);
+    hash = ary_make_hash(ary1);
+    rb_ary_union_hash(hash, ary2);
+
+    ary3 = rb_hash_values(hash);
+    ary_recycle_hash(hash);
+    return ary3;
+}
+
+/*
+ *  call-seq:
+ *    array.union(*other_arrays) -> new_array
+ *
+ *  Returns a new \Array that is the union of +self+ and all given Arrays +other_arrays+;
+ *  duplicates are removed;  order is preserved;  items are compared using <tt>eql?</tt>:
+ *    [0, 1, 2, 3].union([4, 5], [6, 7]) # => [0, 1, 2, 3, 4, 5, 6, 7]
+ *    [0, 1, 1].union([2, 1], [3, 1]) # => [0, 1, 2, 3]
+ *    [0, 1, 2, 3].union([3, 2], [1, 0]) # => [0, 1, 2, 3]
+ *
+ *  Returns a copy of +self+ if no arguments given.
+ *
+ *  Related: Array#|.
+ */
+
+static VALUE
+rb_ary_union_multi(int argc, VALUE *argv, VALUE ary)
+{
+    int i;
+    long sum;
+    VALUE hash, ary_union;
+
+    sum = RARRAY_LEN(ary);
+    for (i = 0; i < argc; i++) {
+        argv[i] = to_ary(argv[i]);
+        sum += RARRAY_LEN(argv[i]);
+    }
+
+    if (sum <= SMALL_ARRAY_LEN) {
+        ary_union = rb_ary_new();
+
+        rb_ary_union(ary_union, ary);
+        for (i = 0; i < argc; i++) rb_ary_union(ary_union, argv[i]);
+
+        return ary_union;
+    }
+
+    hash = ary_make_hash(ary);
+    for (i = 0; i < argc; i++) rb_ary_union_hash(hash, argv[i]);
+
+    ary_union = rb_hash_values(hash);
+    ary_recycle_hash(hash);
+    return ary_union;
+}
+
+static VALUE
+ary_max_generic(VALUE ary, long i, VALUE vmax)
+{
+    RUBY_ASSERT(i > 0 && i < RARRAY_LEN(ary));
+
+    VALUE v;
+    for (; i < RARRAY_LEN(ary); ++i) {
+        v = RARRAY_AREF(ary, i);
+
+        if (rb_cmpint(rb_funcallv(vmax, id_cmp, 1, &v), vmax, v) < 0) {
+            vmax = v;
+        }
+    }
+
+    return vmax;
+}
+
+static VALUE
+ary_max_opt_fixnum(VALUE ary, long i, VALUE vmax)
+{
+    const long n = RARRAY_LEN(ary);
+    RUBY_ASSERT(i > 0 && i < n);
+    RUBY_ASSERT(FIXNUM_P(vmax));
+
+    VALUE v;
+    for (; i < n; ++i) {
+        v = RARRAY_AREF(ary, i);
+
+        if (FIXNUM_P(v)) {
+            if ((long)vmax < (long)v) {
+                vmax = v;
+            }
+        }
+        else {
+            return ary_max_generic(ary, i, vmax);
+        }
+    }
+
+    return vmax;
+}
+
+static VALUE
+ary_max_opt_float(VALUE ary, long i, VALUE vmax)
+{
+    const long n = RARRAY_LEN(ary);
+    RUBY_ASSERT(i > 0 && i < n);
+    RUBY_ASSERT(RB_FLOAT_TYPE_P(vmax));
+
+    VALUE v;
+    for (; i < n; ++i) {
+        v = RARRAY_AREF(ary, i);
+
+        if (RB_FLOAT_TYPE_P(v)) {
+            if (rb_float_cmp(vmax, v) < 0) {
+                vmax = v;
+            }
+        }
+        else {
+            return ary_max_generic(ary, i, vmax);
+        }
+    }
+
+    return vmax;
+}
+
+static VALUE
+ary_max_opt_string(VALUE ary, long i, VALUE vmax)
+{
+    const long n = RARRAY_LEN(ary);
+    RUBY_ASSERT(i > 0 && i < n);
+    RUBY_ASSERT(STRING_P(vmax));
+
+    VALUE v;
+    for (; i < n; ++i) {
+        v = RARRAY_AREF(ary, i);
+
+        if (STRING_P(v)) {
+            if (rb_str_cmp(vmax, v) < 0) {
+                vmax = v;
+            }
+        }
+        else {
+            return ary_max_generic(ary, i, vmax);
+        }
+    }
+
+    return vmax;
+}
+
+/*
+ *  call-seq:
+ *    array.max -> element
+ *    array.max {|a, b| ... } -> element
+ *    array.max(n) -> new_array
+ *    array.max(n) {|a, b| ... } -> new_array
+ *
+ *  Returns one of the following:
+ *  - The maximum-valued element from +self+.
+ *  - A new \Array of maximum-valued elements selected from +self+.
+ *
+ *  When no block is given, each element in +self+ must respond to method <tt><=></tt>
+ *  with an \Integer.
+ *
+ *  With no argument and no block, returns the element in +self+
+ *  having the maximum value per method <tt><=></tt>:
+ *    [0, 1, 2].max # => 2
+ *
+ *  With an argument \Integer +n+ and no block, returns a new \Array with at most +n+ elements,
+ *  in descending order per method <tt><=></tt>:
+ *    [0, 1, 2, 3].max(3) # => [3, 2, 1]
+ *    [0, 1, 2, 3].max(6) # => [3, 2, 1]
+ *
+ *  When a block is given, the block must return an \Integer.
+ *
+ *  With a block and no argument, calls the block <tt>self.size-1</tt> times to compare elements;
+ *  returns the element having the maximum value per the block:
+ *    ['0', '00', '000'].max {|a, b| a.size <=> b.size } # => "000"
+ *
+ *  With an argument +n+ and a block, returns a new \Array with at most +n+ elements,
+ *  in descending order per the block:
+ *    ['0', '00', '000'].max(2) {|a, b| a.size <=> b.size } # => ["000", "00"]
+ */
+static VALUE
+rb_ary_max(int argc, VALUE *argv, VALUE ary)
+{
+    struct cmp_opt_data cmp_opt = { 0, 0 };
+    VALUE result = Qundef, v;
+    VALUE num;
+    long i;
+
+    if (rb_check_arity(argc, 0, 1) && !NIL_P(num = argv[0]))
+       return rb_nmin_run(ary, num, 0, 1, 1);
+
+    const long n = RARRAY_LEN(ary);
+    if (rb_block_given_p()) {
+	for (i = 0; i < RARRAY_LEN(ary); i++) {
+	   v = RARRAY_AREF(ary, i);
+	   if (result == Qundef || rb_cmpint(rb_yield_values(2, v, result), v, result) > 0) {
+	       result = v;
+	   }
 	}
     }
-    for (i=0; i<RARRAY_LEN(ary2); i++) {
-	v = vv = rb_ary_elt(ary2, i);
-	if (st_delete(RHASH_TBL(hash), (st_data_t*)&vv, 0)) {
-	    rb_ary_push(ary3, v);
+    else if (n > 0) {
+        result = RARRAY_AREF(ary, 0);
+        if (n > 1) {
+            if (FIXNUM_P(result) && CMP_OPTIMIZABLE(cmp_opt, Integer)) {
+                return ary_max_opt_fixnum(ary, 1, result);
+            }
+            else if (STRING_P(result) && CMP_OPTIMIZABLE(cmp_opt, String)) {
+                return ary_max_opt_string(ary, 1, result);
+            }
+            else if (RB_FLOAT_TYPE_P(result) && CMP_OPTIMIZABLE(cmp_opt, Float)) {
+                return ary_max_opt_float(ary, 1, result);
+            }
+            else {
+                return ary_max_generic(ary, 1, result);
+            }
+        }
+    }
+    if (result == Qundef) return Qnil;
+    return result;
+}
+
+static VALUE
+ary_min_generic(VALUE ary, long i, VALUE vmin)
+{
+    RUBY_ASSERT(i > 0 && i < RARRAY_LEN(ary));
+
+    VALUE v;
+    for (; i < RARRAY_LEN(ary); ++i) {
+        v = RARRAY_AREF(ary, i);
+
+        if (rb_cmpint(rb_funcallv(vmin, id_cmp, 1, &v), vmin, v) > 0) {
+            vmin = v;
+        }
+    }
+
+    return vmin;
+}
+
+static VALUE
+ary_min_opt_fixnum(VALUE ary, long i, VALUE vmin)
+{
+    const long n = RARRAY_LEN(ary);
+    RUBY_ASSERT(i > 0 && i < n);
+    RUBY_ASSERT(FIXNUM_P(vmin));
+
+    VALUE a;
+    for (; i < n; ++i) {
+        a = RARRAY_AREF(ary, i);
+
+        if (FIXNUM_P(a)) {
+            if ((long)vmin > (long)a) {
+                vmin = a;
+            }
+        }
+        else {
+            return ary_min_generic(ary, i, vmin);
+        }
+    }
+
+    return vmin;
+}
+
+static VALUE
+ary_min_opt_float(VALUE ary, long i, VALUE vmin)
+{
+    const long n = RARRAY_LEN(ary);
+    RUBY_ASSERT(i > 0 && i < n);
+    RUBY_ASSERT(RB_FLOAT_TYPE_P(vmin));
+
+    VALUE a;
+    for (; i < n; ++i) {
+        a = RARRAY_AREF(ary, i);
+
+        if (RB_FLOAT_TYPE_P(a)) {
+            if (rb_float_cmp(vmin, a) > 0) {
+                vmin = a;
+            }
+        }
+        else {
+            return ary_min_generic(ary, i, vmin);
+        }
+    }
+
+    return vmin;
+}
+
+static VALUE
+ary_min_opt_string(VALUE ary, long i, VALUE vmin)
+{
+    const long n = RARRAY_LEN(ary);
+    RUBY_ASSERT(i > 0 && i < n);
+    RUBY_ASSERT(STRING_P(vmin));
+
+    VALUE a;
+    for (; i < n; ++i) {
+        a = RARRAY_AREF(ary, i);
+
+        if (STRING_P(a)) {
+            if (rb_str_cmp(vmin, a) > 0) {
+                vmin = a;
+            }
+        }
+        else {
+            return ary_min_generic(ary, i, vmin);
+        }
+    }
+
+    return vmin;
+}
+
+/*
+ *  call-seq:
+ *    array.min -> element
+ *    array.min { |a, b| ... } -> element
+ *    array.min(n) -> new_array
+ *    array.min(n) { |a, b| ... } -> new_array
+ *
+ *  Returns one of the following:
+ *  - The minimum-valued element from +self+.
+ *  - A new \Array of minimum-valued elements selected from +self+.
+ *
+ *  When no block is given, each element in +self+ must respond to method <tt><=></tt>
+ *  with an \Integer.
+ *
+ *  With no argument and no block, returns the element in +self+
+ *  having the minimum value per method <tt><=></tt>:
+ *    [0, 1, 2].min # => 0
+ *
+ *  With \Integer argument +n+ and no block, returns a new \Array with at most +n+ elements,
+ *  in ascending order per method <tt><=></tt>:
+ *    [0, 1, 2, 3].min(3) # => [0, 1, 2]
+ *    [0, 1, 2, 3].min(6) # => [0, 1, 2, 3]
+ *
+ *  When a block is given, the block must return an Integer.
+ *
+ *  With a block and no argument, calls the block <tt>self.size-1</tt> times to compare elements;
+ *  returns the element having the minimum value per the block:
+ *    ['0', '00', '000'].min { |a, b| a.size <=> b.size } # => "0"
+ *
+ *  With an argument +n+ and a block, returns a new \Array with at most +n+ elements,
+ *  in ascending order per the block:
+ *    [0, 1, 2, 3].min(3) # => [0, 1, 2]
+ *    [0, 1, 2, 3].min(6) # => [0, 1, 2, 3]
+ */
+static VALUE
+rb_ary_min(int argc, VALUE *argv, VALUE ary)
+{
+    struct cmp_opt_data cmp_opt = { 0, 0 };
+    VALUE result = Qundef, v;
+    VALUE num;
+    long i;
+
+    if (rb_check_arity(argc, 0, 1) && !NIL_P(num = argv[0]))
+       return rb_nmin_run(ary, num, 0, 0, 1);
+
+    const long n = RARRAY_LEN(ary);
+    if (rb_block_given_p()) {
+	for (i = 0; i < RARRAY_LEN(ary); i++) {
+	   v = RARRAY_AREF(ary, i);
+	   if (result == Qundef || rb_cmpint(rb_yield_values(2, v, result), v, result) < 0) {
+	       result = v;
+	   }
 	}
     }
-    return ary3;
+    else if (n > 0) {
+        result = RARRAY_AREF(ary, 0);
+        if (n > 1) {
+            if (FIXNUM_P(result) && CMP_OPTIMIZABLE(cmp_opt, Integer)) {
+                return ary_min_opt_fixnum(ary, 1, result);
+            }
+            else if (STRING_P(result) && CMP_OPTIMIZABLE(cmp_opt, String)) {
+                return ary_min_opt_string(ary, 1, result);
+            }
+            else if (RB_FLOAT_TYPE_P(result) && CMP_OPTIMIZABLE(cmp_opt, Float)) {
+                return ary_min_opt_float(ary, 1, result);
+            }
+            else {
+                return ary_min_generic(ary, 1, result);
+            }
+        }
+    }
+    if (result == Qundef) return Qnil;
+    return result;
 }
 
 /*
  *  call-seq:
- *     array.uniq! -> array or nil
- *  
- *  Removes duplicate elements from _self_.
- *  Returns <code>nil</code> if no changes are made (that is, no
- *  duplicates are found).
- *     
- *     a = [ "a", "a", "b", "b", "c" ]
- *     a.uniq!   #=> ["a", "b", "c"]
- *     b = [ "a", "b", "c" ]
- *     b.uniq!   #=> nil
+ *    array.minmax -> [min_val, max_val]
+ *    array.minmax {|a, b| ... } -> [min_val, max_val]
+ *
+ *  Returns a new 2-element \Array containing the minimum and maximum values
+ *  from +self+, either per method <tt><=></tt> or per a given block:.
+ *
+ *  When no block is given, each element in +self+ must respond to method <tt><=></tt>
+ *  with an \Integer;
+ *  returns a new 2-element \Array containing the minimum and maximum values
+ *  from +self+, per method <tt><=></tt>:
+ *    [0, 1, 2].minmax # => [0, 2]
+ *
+ *  When a block is given, the block must return an \Integer;
+ *  the block is called <tt>self.size-1</tt> times to compare elements;
+ *  returns a new 2-element \Array containing the minimum and maximum values
+ *  from +self+, per the block:
+ *    ['0', '00', '000'].minmax {|a, b| a.size <=> b.size } # => ["0", "000"]
  */
+static VALUE
+rb_ary_minmax(VALUE ary)
+{
+    if (rb_block_given_p()) {
+        return rb_call_super(0, NULL);
+    }
+    return rb_assoc_new(rb_ary_min(0, 0, ary), rb_ary_max(0, 0, ary));
+}
 
+static int
+push_value(st_data_t key, st_data_t val, st_data_t ary)
+{
+    rb_ary_push((VALUE)ary, (VALUE)val);
+    return ST_CONTINUE;
+}
+
+/*
+ *  call-seq:
+ *    array.uniq! -> self or nil
+ *    array.uniq! {|element| ... } -> self or nil
+ *
+ *  Removes duplicate elements from +self+, the first occurrence always being retained;
+ *  returns +self+ if any elements removed, +nil+ otherwise.
+ *
+ *  With no block given, identifies and removes elements using method <tt>eql?</tt>
+ *  to compare.
+ *
+ *  Returns +self+ if any elements removed:
+ *    a = [0, 0, 1, 1, 2, 2]
+ *    a.uniq! # => [0, 1, 2]
+ *
+ *  Returns +nil+ if no elements removed.
+ *
+ *  With a block given, calls the block for each element;
+ *  identifies (using method <tt>eql?</tt>) and removes
+ *  elements for which the block returns duplicate values.
+ *
+ *  Returns +self+ if any elements removed:
+ *    a = ['a', 'aa', 'aaa', 'b', 'bb', 'bbb']
+ *    a.uniq! {|element| element.size } # => ['a', 'aa', 'aaa']
+ *
+ *  Returns +nil+ if no elements removed.
+ */
 static VALUE
 rb_ary_uniq_bang(VALUE ary)
 {
-    VALUE hash, v, vv;
-    long i, j;
-
-    hash = ary_make_hash(ary, 0);
+    VALUE hash;
+    long hash_size;
 
-    if (RARRAY_LEN(ary) == RHASH_SIZE(hash)) {
+    rb_ary_modify_check(ary);
+    if (RARRAY_LEN(ary) <= 1)
+        return Qnil;
+    if (rb_block_given_p())
+	hash = ary_make_hash_by(ary);
+    else
+	hash = ary_make_hash(ary);
+
+    hash_size = RHASH_SIZE(hash);
+    if (RARRAY_LEN(ary) == hash_size) {
 	return Qnil;
     }
-    for (i=j=0; i<RARRAY_LEN(ary); i++) {
-	v = vv = rb_ary_elt(ary, i);
-	if (st_delete(RHASH_TBL(hash), (st_data_t*)&vv, 0)) {
-	    rb_ary_store(ary, j++, v);
-	}
+    rb_ary_modify_check(ary);
+    ARY_SET_LEN(ary, 0);
+    if (ARY_SHARED_P(ary) && !ARY_EMBED_P(ary)) {
+	rb_ary_unshare(ary);
+	FL_SET_EMBED(ary);
     }
-    ARY_SET_LEN(ary, j);
+    ary_resize_capa(ary, hash_size);
+    rb_hash_foreach(hash, push_value, ary);
+    ary_recycle_hash(hash);
 
     return ary;
 }
 
 /*
  *  call-seq:
- *     array.uniq   -> an_array
- *  
- *  Returns a new array by removing duplicate values in <i>self</i>.
- *     
- *     a = [ "a", "a", "b", "b", "c" ]
- *     a.uniq   #=> ["a", "b", "c"]
+ *    array.uniq -> new_array
+ *    array.uniq {|element| ... } -> new_array
+ *
+ *  Returns a new \Array containing those elements from +self+ that are not duplicates,
+ *  the first occurrence always being retained.
+ *
+ *  With no block given, identifies and omits duplicates using method <tt>eql?</tt>
+ *  to compare.
+ *    a = [0, 0, 1, 1, 2, 2]
+ *    a.uniq # => [0, 1, 2]
+ *
+ *  With a block given, calls the block for each element;
+ *  identifies (using method <tt>eql?</tt>) and omits duplicate values,
+ *  that is, those elements for which the block returns the same value:
+ *    a = ['a', 'aa', 'aaa', 'b', 'bb', 'bbb']
+ *    a.uniq {|element| element.size } # => ["a", "aa", "aaa"]
  */
 
 static VALUE
 rb_ary_uniq(VALUE ary)
 {
-    ary = rb_ary_dup(ary);
-    rb_ary_uniq_bang(ary);
-    return ary;
+    VALUE hash, uniq;
+
+    if (RARRAY_LEN(ary) <= 1) {
+        hash = 0;
+        uniq = rb_ary_dup(ary);
+    }
+    else if (rb_block_given_p()) {
+	hash = ary_make_hash_by(ary);
+	uniq = rb_hash_values(hash);
+    }
+    else {
+	hash = ary_make_hash(ary);
+	uniq = rb_hash_values(hash);
+    }
+    if (hash) {
+        ary_recycle_hash(hash);
+    }
+
+    return uniq;
 }
 
-/* 
+/*
  *  call-seq:
- *     array.compact!    ->   array  or  nil
+ *    array.compact! -> self or nil
  *
- *  Removes +nil+ elements from array.
- *  Returns +nil+ if no changes were made.
+ *  Removes all +nil+ elements from +self+.
  *
- *     [ "a", nil, "b", nil, "c" ].compact! #=> [ "a", "b", "c" ]
- *     [ "a", "b", "c" ].compact!           #=> nil
+ *  Returns +self+ if any elements removed, otherwise +nil+.
  */
 
 static VALUE
@@ -3026,33 +6040,29 @@ rb_ary_compact_bang(VALUE ary)
     long n;
 
     rb_ary_modify(ary);
-    p = t = RARRAY_PTR(ary);
+    p = t = (VALUE *)RARRAY_CONST_PTR_TRANSIENT(ary); /* WB: no new reference */
     end = p + RARRAY_LEN(ary);
-    
+
     while (t < end) {
 	if (NIL_P(*t)) t++;
 	else *p++ = *t++;
     }
-    n = p - RARRAY_PTR(ary);
+    n = p - RARRAY_CONST_PTR_TRANSIENT(ary);
     if (RARRAY_LEN(ary) == n) {
 	return Qnil;
     }
-    ARY_SET_LEN(ary, n);
-    if (n * 2 < ARY_CAPA(ary) && ARY_DEFAULT_SIZE * 2 < ARY_CAPA(ary)) {
-	ary_resize_capa(ary, n * 2);
-    }
+    ary_resize_smaller(ary, n);
 
     return ary;
 }
 
 /*
  *  call-seq:
- *     array.compact     ->  an_array
+ *    array.compact -> new_array
  *
- *  Returns a copy of _self_ with all +nil+ elements removed.
- *
- *     [ "a", nil, "b", nil, "c", nil ].compact
- *                       #=> [ "a", "b", "c" ]
+ *  Returns a new \Array containing all non-+nil+ elements from +self+:
+ *    a = [nil, 0, nil, 1, nil, 2, nil]
+ *    a.compact # => [0, 1, 2]
  */
 
 static VALUE
@@ -3065,45 +6075,52 @@ rb_ary_compact(VALUE ary)
 
 /*
  *  call-seq:
- *     array.count      -> int
- *     array.count(obj) -> int
- *     array.count { |item| block }  -> int
- *  
- *  Returns the number of elements.  If an argument is given, counts
- *  the number of elements which equals to <i>obj</i>.  If a block is
- *  given, counts the number of elements yielding a true value.
+ *    array.count -> an_integer
+ *    array.count(obj) -> an_integer
+ *    array.count {|element| ... } -> an_integer
+ *
+ *  Returns a count of specified elements.
  *
- *     ary = [1, 2, 4, 2]
- *     ary.count             # => 4
- *     ary.count(2)          # => 2
- *     ary.count{|x|x%2==0}  # => 3
+ *  With no argument and no block, returns the count of all elements:
+ *    [0, 1, 2].count # => 3
+ *    [].count # => 0
  *
+ *  With argument +obj+, returns the count of elements <tt>eql?</tt> to +obj+:
+ *    [0, 1, 2, 0].count(0) # => 2
+ *    [0, 1, 2].count(3) # => 0
+ *
+ *  With no argument and a block given, calls the block with each element;
+ *  returns the count of elements for which the block returns a truthy value:
+ *    [0, 1, 2, 3].count {|element| element > 1} # => 2
+ *
+ *  With argument +obj+ and a block given, issues a warning, ignores the block,
+ *  and returns the count of elements <tt>eql?</tt> to +obj+:
  */
 
 static VALUE
 rb_ary_count(int argc, VALUE *argv, VALUE ary)
 {
-    long n = 0;
+    long i, n = 0;
 
-    if (argc == 0) {
-	VALUE *p, *pend;
+    if (rb_check_arity(argc, 0, 1) == 0) {
+	VALUE v;
 
 	if (!rb_block_given_p())
 	    return LONG2NUM(RARRAY_LEN(ary));
 
-	for (p = RARRAY_PTR(ary), pend = p + RARRAY_LEN(ary); p < pend; p++) {
-	    if (RTEST(rb_yield(*p))) n++;
+	for (i = 0; i < RARRAY_LEN(ary); i++) {
+	    v = RARRAY_AREF(ary, i);
+	    if (RTEST(rb_yield(v))) n++;
 	}
     }
     else {
-	VALUE obj, *p, *pend;
+        VALUE obj = argv[0];
 
-	rb_scan_args(argc, argv, "1", &obj);
 	if (rb_block_given_p()) {
 	    rb_warn("given block not used");
 	}
-	for (p = RARRAY_PTR(ary), pend = p + RARRAY_LEN(ary); p < pend; p++) {
-	    if (rb_equal(*p, obj)) n++;
+	for (i = 0; i < RARRAY_LEN(ary); i++) {
+	    if (rb_equal(RARRAY_AREF(ary, i), obj)) n++;
 	}
     }
 
@@ -3111,37 +6128,71 @@ rb_ary_count(int argc, VALUE *argv, VALUE ary)
 }
 
 static VALUE
-flatten(VALUE ary, int level, int *modified)
+flatten(VALUE ary, int level)
 {
-    long i = 0;
-    VALUE stack, result, tmp, elt;
-    st_table *memo;
+    long i;
+    VALUE stack, result, tmp = 0, elt, vmemo;
+    st_table *memo = 0;
     st_data_t id;
 
-    stack = ary_new(0, ARY_DEFAULT_SIZE);
+    for (i = 0; i < RARRAY_LEN(ary); i++) {
+        elt = RARRAY_AREF(ary, i);
+        tmp = rb_check_array_type(elt);
+        if (!NIL_P(tmp)) {
+            break;
+        }
+    }
+    if (i == RARRAY_LEN(ary)) {
+        return ary;
+    }
+
     result = ary_new(0, RARRAY_LEN(ary));
-    memo = st_init_numtable();
-    st_insert(memo, (st_data_t)ary, (st_data_t)Qtrue);
-    *modified = 0;
+    ary_memcpy(result, 0, i, RARRAY_CONST_PTR_TRANSIENT(ary));
+    ARY_SET_LEN(result, i);
+
+    stack = ary_new(0, ARY_DEFAULT_SIZE);
+    rb_ary_push(stack, ary);
+    rb_ary_push(stack, LONG2NUM(i + 1));
+
+    if (level < 0) {
+	vmemo = rb_hash_new();
+	RBASIC_CLEAR_CLASS(vmemo);
+	memo = st_init_numtable();
+	rb_hash_st_table_set(vmemo, memo);
+	st_insert(memo, (st_data_t)ary, (st_data_t)Qtrue);
+	st_insert(memo, (st_data_t)tmp, (st_data_t)Qtrue);
+    }
+
+    ary = tmp;
+    i = 0;
 
     while (1) {
 	while (i < RARRAY_LEN(ary)) {
-	    elt = RARRAY_PTR(ary)[i++];
+	    elt = RARRAY_AREF(ary, i++);
+	    if (level >= 0 && RARRAY_LEN(stack) / 2 >= level) {
+		rb_ary_push(result, elt);
+		continue;
+	    }
 	    tmp = rb_check_array_type(elt);
 	    if (RBASIC(result)->klass) {
+		if (memo) {
+		    RB_GC_GUARD(vmemo);
+		    st_clear(memo);
+		}
 		rb_raise(rb_eRuntimeError, "flatten reentered");
 	    }
-	    if (NIL_P(tmp) || (level >= 0 && RARRAY_LEN(stack) / 2 >= level)) {
+	    if (NIL_P(tmp)) {
 		rb_ary_push(result, elt);
 	    }
 	    else {
-		*modified = 1;
-		id = (st_data_t)tmp;
-		if (st_lookup(memo, id, 0)) {
-		    st_free_table(memo);
-		    rb_raise(rb_eArgError, "tried to flatten recursive array");
+		if (memo) {
+		    id = (st_data_t)tmp;
+		    if (st_is_member(memo, id)) {
+			st_clear(memo);
+			rb_raise(rb_eArgError, "tried to flatten recursive array");
+		    }
+		    st_insert(memo, id, (st_data_t)Qtrue);
 		}
-		st_insert(memo, id, (st_data_t)Qtrue);
 		rb_ary_push(stack, ary);
 		rb_ary_push(stack, LONG2NUM(i));
 		ary = tmp;
@@ -3151,35 +6202,49 @@ flatten(VALUE ary, int level, int *modified)
 	if (RARRAY_LEN(stack) == 0) {
 	    break;
 	}
-	id = (st_data_t)ary;
-	st_delete(memo, &id, 0);
+	if (memo) {
+	    id = (st_data_t)ary;
+	    st_delete(memo, &id, 0);
+	}
 	tmp = rb_ary_pop(stack);
 	i = NUM2LONG(tmp);
 	ary = rb_ary_pop(stack);
     }
 
-    st_free_table(memo);
+    if (memo) {
+	st_clear(memo);
+    }
 
-    RBASIC(result)->klass = rb_class_of(ary);
+    RBASIC_SET_CLASS(result, rb_cArray);
     return result;
 }
 
 /*
  *  call-seq:
- *     array.flatten! -> array or nil
- *     array.flatten!(level) -> array or nil
- *  
- *  Flattens _self_ in place.
- *  Returns <code>nil</code> if no modifications were made (i.e.,
- *  <i>array</i> contains no subarrays.)  If the optional <i>level</i>
- *  argument determines the level of recursion to flatten.
- *     
- *     a = [ 1, 2, [3, [4, 5] ] ]
- *     a.flatten!   #=> [1, 2, 3, 4, 5]
- *     a.flatten!   #=> nil
- *     a            #=> [1, 2, 3, 4, 5]
- *     a = [ 1, 2, [3, [4, 5] ] ]
- *     a.flatten!(1) #=> [1, 2, 3, [4, 5]]
+ *    array.flatten! -> self or nil
+ *    array.flatten!(level) -> self or nil
+ *
+ *  Replaces each nested \Array in +self+ with the elements from that \Array;
+ *  returns +self+ if any changes, +nil+ otherwise.
+ *
+ *  With non-negative \Integer argument +level+, flattens recursively through +level+ levels:
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten!(1) # => [0, 1, [2, 3], 4, 5]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten!(2) # => [0, 1, 2, 3, 4, 5]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten!(3) # => [0, 1, 2, 3, 4, 5]
+ *    [0, 1, 2].flatten!(1) # => nil
+ *
+ *  With no argument, a +nil+ argument, or with negative argument +level+, flattens all levels:
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten! # => [0, 1, 2, 3, 4, 5]
+ *    [0, 1, 2].flatten! # => nil
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten!(-1) # => [0, 1, 2, 3, 4, 5]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten!(-2) # => [0, 1, 2, 3, 4, 5]
+ *    [0, 1, 2].flatten!(-1) # => nil
  */
 
 static VALUE
@@ -3188,148 +6253,168 @@ rb_ary_flatten_bang(int argc, VALUE *argv, VALUE ary)
     int mod = 0, level = -1;
     VALUE result, lv;
 
-    rb_scan_args(argc, argv, "01", &lv);
+    lv = (rb_check_arity(argc, 0, 1) ? argv[0] : Qnil);
+    rb_ary_modify_check(ary);
     if (!NIL_P(lv)) level = NUM2INT(lv);
-    if (level == 0) return ary;
+    if (level == 0) return Qnil;
 
-    result = flatten(ary, level, &mod);
-    if (mod == 0) return Qnil;
+    result = flatten(ary, level);
+    if (result == ary) {
+	return Qnil;
+    }
+    if (!(mod = ARY_EMBED_P(result))) rb_obj_freeze(result);
     rb_ary_replace(ary, result);
+    if (mod) ARY_SET_EMBED_LEN(result, 0);
 
     return ary;
 }
 
 /*
  *  call-seq:
- *     array.flatten -> an_array
- *     array.flatten(level) -> an_array
- *  
- *  Returns a new array that is a one-dimensional flattening of this
- *  array (recursively). That is, for every element that is an array,
- *  extract its elements into the new array.  If the optional
- *  <i>level</i> argument determines the level of recursion to flatten.
- *     
- *     s = [ 1, 2, 3 ]           #=> [1, 2, 3]
- *     t = [ 4, 5, 6, [7, 8] ]   #=> [4, 5, 6, [7, 8]]
- *     a = [ s, t, 9, 10 ]       #=> [[1, 2, 3], [4, 5, 6, [7, 8]], 9, 10]
- *     a.flatten                 #=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
- *     a = [ 1, 2, [3, [4, 5] ] ]
- *     a.flatten(1)              #=> [1, 2, 3, [4, 5]]
+ *    array.flatten -> new_array
+ *    array.flatten(level) -> new_array
+ *
+ *  Returns a new \Array that is a recursive flattening of +self+:
+ *  - Each non-Array element is unchanged.
+ *  - Each \Array is replaced by its individual elements.
+ *
+ *  With non-negative \Integer argument +level+, flattens recursively through +level+ levels:
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten(0) # => [0, [1, [2, 3], 4], 5]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten(1) # => [0, 1, [2, 3], 4, 5]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten(2) # => [0, 1, 2, 3, 4, 5]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten(3) # => [0, 1, 2, 3, 4, 5]
+ *
+ *  With no argument, a +nil+ argument, or with negative argument +level+, flattens all levels:
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten # => [0, 1, 2, 3, 4, 5]
+ *    [0, 1, 2].flatten # => [0, 1, 2]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten(-1) # => [0, 1, 2, 3, 4, 5]
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5 ]
+ *    a.flatten(-2) # => [0, 1, 2, 3, 4, 5]
+ *    [0, 1, 2].flatten(-1) # => [0, 1, 2]
  */
 
 static VALUE
 rb_ary_flatten(int argc, VALUE *argv, VALUE ary)
 {
-    int mod = 0, level = -1;
-    VALUE result, lv;
+    int level = -1;
+    VALUE result;
 
-    rb_scan_args(argc, argv, "01", &lv);
-    if (!NIL_P(lv)) level = NUM2INT(lv);
-    if (level == 0) return ary_make_shared_copy(ary);
+    if (rb_check_arity(argc, 0, 1) && !NIL_P(argv[0])) {
+        level = NUM2INT(argv[0]);
+        if (level == 0) return ary_make_shared_copy(ary);
+    }
 
-    result = flatten(ary, level, &mod);
-    OBJ_INFECT(result, ary);
+    result = flatten(ary, level);
+    if (result == ary) {
+        result = ary_make_shared_copy(ary);
+    }
 
     return result;
 }
 
-/*
- *  call-seq:
- *     array.shuffle!        -> array
- *  
- *  Shuffles elements in _self_ in place.
- */
-
+#define RAND_UPTO(max) (long)rb_random_ulong_limited((randgen), (max)-1)
 
 static VALUE
-rb_ary_shuffle_bang(VALUE ary)
+rb_ary_shuffle_bang(rb_execution_context_t *ec, VALUE ary, VALUE randgen)
 {
-    long i = RARRAY_LEN(ary);
+    long i, len;
 
     rb_ary_modify(ary);
-    while (i) {
-	long j = rb_genrand_real()*i;
-	VALUE tmp = RARRAY_PTR(ary)[--i];
-	RARRAY_PTR(ary)[i] = RARRAY_PTR(ary)[j];
-	RARRAY_PTR(ary)[j] = tmp;
-    }
+    i = len = RARRAY_LEN(ary);
+    RARRAY_PTR_USE(ary, ptr, {
+	while (i) {
+	    long j = RAND_UPTO(i);
+	    VALUE tmp;
+            if (len != RARRAY_LEN(ary) || ptr != RARRAY_CONST_PTR_TRANSIENT(ary)) {
+                rb_raise(rb_eRuntimeError, "modified during shuffle");
+	    }
+	    tmp = ptr[--i];
+	    ptr[i] = ptr[j];
+	    ptr[j] = tmp;
+	}
+    }); /* WB: no new reference */
     return ary;
 }
 
-
-/*
- *  call-seq:
- *     array.shuffle -> an_array
- *  
- *  Returns a new array with elements of this array shuffled.
- *     
- *     a = [ 1, 2, 3 ]           #=> [1, 2, 3]
- *     a.shuffle                 #=> [2, 3, 1]
- */
-
 static VALUE
-rb_ary_shuffle(VALUE ary)
+rb_ary_shuffle(rb_execution_context_t *ec, VALUE ary, VALUE randgen)
 {
     ary = rb_ary_dup(ary);
-    rb_ary_shuffle_bang(ary);
+    rb_ary_shuffle_bang(ec, ary, randgen);
     return ary;
 }
 
-
-/*
- *  call-seq:
- *     array.sample        -> obj
- *     array.sample(n)     -> an_array
- *  
- *  Choose a random element, or the random +n+ elements, from the array.
- *  If the array is empty, the first form returns <code>nil</code>, and the
- *  second form returns an empty array.
- *  
- */
-
-
 static VALUE
-rb_ary_sample(int argc, VALUE *argv, VALUE ary)
+rb_ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE to_array)
 {
-    VALUE nv, result, *ptr;
+    VALUE result;
     long n, len, i, j, k, idx[10];
+    long rnds[numberof(idx)];
+    long memo_threshold;
 
-    len = RARRAY_LEN(ary); 
-    if (argc == 0) {
-	if (len == 0) return Qnil;
-	i = len == 1 ? 0 : rb_genrand_real()*len;
-	return RARRAY_PTR(ary)[i];
+    len = RARRAY_LEN(ary);
+    if (!to_array) {
+	if (len < 2)
+	    i = 0;
+	else
+	    i = RAND_UPTO(len);
+
+	return rb_ary_elt(ary, i);
     }
-    rb_scan_args(argc, argv, "1", &nv);
     n = NUM2LONG(nv);
-    ptr = RARRAY_PTR(ary); 
-    len = RARRAY_LEN(ary); 
+    if (n < 0) rb_raise(rb_eArgError, "negative sample number");
+    if (n > len) n = len;
+    if (n <= numberof(idx)) {
+	for (i = 0; i < n; ++i) {
+	    rnds[i] = RAND_UPTO(len - i);
+	}
+    }
+    k = len;
+    len = RARRAY_LEN(ary);
+    if (len < k && n <= numberof(idx)) {
+	for (i = 0; i < n; ++i) {
+	    if (rnds[i] >= len) return rb_ary_new_capa(0);
+	}
+    }
     if (n > len) n = len;
     switch (n) {
-      case 0: return rb_ary_new2(0);
+      case 0:
+	return rb_ary_new_capa(0);
       case 1:
-	return rb_ary_new4(1, &ptr[(long)(rb_genrand_real()*len)]);
+	i = rnds[0];
+	return rb_ary_new_from_args(1, RARRAY_AREF(ary, i));
       case 2:
-	i = rb_genrand_real()*len;
-	j = rb_genrand_real()*(len-1);
+	i = rnds[0];
+	j = rnds[1];
 	if (j >= i) j++;
-	return rb_ary_new3(2, ptr[i], ptr[j]);
+	return rb_ary_new_from_args(2, RARRAY_AREF(ary, i), RARRAY_AREF(ary, j));
       case 3:
-	i = rb_genrand_real()*len;
-	j = rb_genrand_real()*(len-1);
-	k = rb_genrand_real()*(len-2);
+	i = rnds[0];
+	j = rnds[1];
+	k = rnds[2];
 	{
 	    long l = j, g = i;
 	    if (j >= i) l = i, g = ++j;
 	    if (k >= l && (++k >= g)) ++k;
 	}
-	return rb_ary_new3(3, ptr[i], ptr[j], ptr[k]);
-    }
-    if (n < sizeof(idx)/sizeof(idx[0])) {
-	long sorted[sizeof(idx)/sizeof(idx[0])];
-	sorted[0] = idx[0] = rb_genrand_real()*len;
+	return rb_ary_new_from_args(3, RARRAY_AREF(ary, i), RARRAY_AREF(ary, j), RARRAY_AREF(ary, k));
+    }
+    memo_threshold =
+	len < 2560 ? len / 128 :
+	len < 5120 ? len / 64 :
+	len < 10240 ? len / 32 :
+	len / 16;
+    if (n <= numberof(idx)) {
+	long sorted[numberof(idx)];
+	sorted[0] = idx[0] = rnds[0];
 	for (i=1; i<n; i++) {
-	    k = rb_genrand_real()*--len;
+	    k = rnds[i];
 	    for (j = 0; j < i; ++j) {
 		if (k < sorted[j]) break;
 		++k;
@@ -3337,149 +6422,328 @@ rb_ary_sample(int argc, VALUE *argv, VALUE ary)
 	    memmove(&sorted[j+1], &sorted[j], sizeof(sorted[0])*(i-j));
 	    sorted[j] = idx[i] = k;
 	}
-	result = rb_ary_new2(n);
-	for (i=0; i<n; i++) {
-	    RARRAY_PTR(result)[i] = RARRAY_PTR(ary)[idx[i]];
-	}
+	result = rb_ary_new_capa(n);
+        RARRAY_PTR_USE_TRANSIENT(result, ptr_result, {
+	    for (i=0; i<n; i++) {
+		ptr_result[i] = RARRAY_AREF(ary, idx[i]);
+	    }
+	});
+    }
+    else if (n <= memo_threshold / 2) {
+	long max_idx = 0;
+#undef RUBY_UNTYPED_DATA_WARNING
+#define RUBY_UNTYPED_DATA_WARNING 0
+	VALUE vmemo = Data_Wrap_Struct(0, 0, st_free_table, 0);
+	st_table *memo = st_init_numtable_with_size(n);
+	DATA_PTR(vmemo) = memo;
+	result = rb_ary_new_capa(n);
+	RARRAY_PTR_USE(result, ptr_result, {
+	    for (i=0; i<n; i++) {
+		long r = RAND_UPTO(len-i) + i;
+		ptr_result[i] = r;
+		if (r > max_idx) max_idx = r;
+	    }
+	    len = RARRAY_LEN(ary);
+	    if (len <= max_idx) n = 0;
+	    else if (n > len) n = len;
+            RARRAY_PTR_USE_TRANSIENT(ary, ptr_ary, {
+		for (i=0; i<n; i++) {
+		    long j2 = j = ptr_result[i];
+		    long i2 = i;
+		    st_data_t value;
+		    if (st_lookup(memo, (st_data_t)i, &value)) i2 = (long)value;
+		    if (st_lookup(memo, (st_data_t)j, &value)) j2 = (long)value;
+		    st_insert(memo, (st_data_t)j, (st_data_t)i2);
+		    ptr_result[i] = ptr_ary[j2];
+		}
+	    });
+	});
+	DATA_PTR(vmemo) = 0;
+	st_free_table(memo);
     }
     else {
-	result = rb_ary_new4(len, ptr);
+	result = rb_ary_dup(ary);
+	RBASIC_CLEAR_CLASS(result);
 	RB_GC_GUARD(ary);
-	for (i=0; i<n; i++) {
-	    j = (long)(rb_genrand_real()*(len-i)) + i;
-	    nv = RARRAY_PTR(result)[j];
-	    RARRAY_PTR(result)[j] = RARRAY_PTR(result)[i];
-	    RARRAY_PTR(result)[i] = nv;
-	}
+	RARRAY_PTR_USE(result, ptr_result, {
+	    for (i=0; i<n; i++) {
+		j = RAND_UPTO(len-i) + i;
+		nv = ptr_result[j];
+		ptr_result[j] = ptr_result[i];
+		ptr_result[i] = nv;
+	    }
+	});
+	RBASIC_SET_CLASS_RAW(result, rb_cArray);
     }
     ARY_SET_LEN(result, n);
 
     return result;
 }
 
+static VALUE
+rb_ary_cycle_size(VALUE self, VALUE args, VALUE eobj)
+{
+    long mul;
+    VALUE n = Qnil;
+    if (args && (RARRAY_LEN(args) > 0)) {
+	n = RARRAY_AREF(args, 0);
+    }
+    if (RARRAY_LEN(self) == 0) return INT2FIX(0);
+    if (n == Qnil) return DBL2NUM(HUGE_VAL);
+    mul = NUM2LONG(n);
+    if (mul <= 0) return INT2FIX(0);
+    n = LONG2FIX(mul);
+    return rb_fix_mul_fix(rb_ary_length(self), n);
+}
 
 /*
  *  call-seq:
- *     ary.cycle {|obj| block }
- *     ary.cycle(n) {|obj| block }
- *  
- *  Calls <i>block</i> for each element repeatedly _n_ times or
- *  forever if none or nil is given.  If a non-positive number is
- *  given or the array is empty, does nothing.  Returns nil if the
- *  loop has finished without getting interrupted.
- *     
- *     a = ["a", "b", "c"]
- *     a.cycle {|x| puts x }  # print, a, b, c, a, b, c,.. forever.
- *     a.cycle(2) {|x| puts x }  # print, a, b, c, a, b, c.
- *     
+ *    array.cycle {|element| ... } -> nil
+ *    array.cycle(count) {|element| ... } -> nil
+ *    array.cycle -> new_enumerator
+ *    array.cycle(count) -> new_enumerator
+ *
+ *  When called with positive \Integer argument +count+ and a block,
+ *  calls the block with each element, then does so again,
+ *  until it has done so +count+ times; returns +nil+:
+ *    output = []
+ *    [0, 1].cycle(2) {|element| output.push(element) } # => nil
+ *    output # => [0, 1, 0, 1]
+ *
+ *  If +count+ is zero or negative, does not call the block:
+ *    [0, 1].cycle(0) {|element| fail 'Cannot happen' } # => nil
+ *    [0, 1].cycle(-1) {|element| fail 'Cannot happen' } # => nil
+ *
+ *  When a block is given, and argument is omitted or +nil+, cycles forever:
+ *    # Prints 0 and 1 forever.
+ *    [0, 1].cycle {|element| puts element }
+ *    [0, 1].cycle(nil) {|element| puts element }
+ *
+ *  When no block is given, returns a new \Enumerator:
+ *
+ *    [0, 1].cycle(2) # => #<Enumerator: [0, 1]:cycle(2)>
+ *    [0, 1].cycle # => # => #<Enumerator: [0, 1]:cycle>
+ *    [0, 1].cycle.first(5) # => [0, 1, 0, 1, 0]
  */
-
 static VALUE
 rb_ary_cycle(int argc, VALUE *argv, VALUE ary)
 {
     long n, i;
-    VALUE nv = Qnil;
 
-    rb_scan_args(argc, argv, "01", &nv);
+    rb_check_arity(argc, 0, 1);
 
-    RETURN_ENUMERATOR(ary, argc, argv);
-    if (NIL_P(nv)) {
+    RETURN_SIZED_ENUMERATOR(ary, argc, argv, rb_ary_cycle_size);
+    if (argc == 0 || NIL_P(argv[0])) {
         n = -1;
     }
     else {
-        n = NUM2LONG(nv);
+        n = NUM2LONG(argv[0]);
         if (n <= 0) return Qnil;
     }
 
     while (RARRAY_LEN(ary) > 0 && (n < 0 || 0 < n--)) {
         for (i=0; i<RARRAY_LEN(ary); i++) {
-            rb_yield(RARRAY_PTR(ary)[i]);
+            rb_yield(RARRAY_AREF(ary, i));
         }
     }
     return Qnil;
 }
 
-#define tmpbuf(n, size) rb_str_tmp_new((n)*(size))
+#define tmpary(n) rb_ary_tmp_new(n)
+#define tmpary_discard(a) (ary_discard(a), RBASIC_SET_CLASS_RAW(a, rb_cArray))
 
 /*
- * Recursively compute permutations of r elements of the set [0..n-1].
- * When we have a complete permutation of array indexes, copy the values
- * at those indexes into a new array and yield that array. 
+ * Build a ruby array of the corresponding values and yield it to the
+ * associated block.
+ * Return the class of +values+ for reentry check.
+ */
+static int
+yield_indexed_values(const VALUE values, const long r, const long *const p)
+{
+    const VALUE result = rb_ary_new2(r);
+    long i;
+
+    for (i = 0; i < r; i++) ARY_SET(result, i, RARRAY_AREF(values, p[i]));
+    ARY_SET_LEN(result, r);
+    rb_yield(result);
+    return !RBASIC(values)->klass;
+}
+
+/*
+ * Compute permutations of +r+ elements of the set <code>[0..n-1]</code>.
+ *
+ * When we have a complete permutation of array indices, copy the values
+ * at those indices into a new array and yield that array.
  *
- * n: the size of the set 
+ * n: the size of the set
  * r: the number of elements in each permutation
  * p: the array (of size r) that we're filling in
- * index: what index we're filling in now
  * used: an array of booleans: whether a given index is already used
  * values: the Ruby array that holds the actual values to permute
  */
 static void
-permute0(long n, long r, long *p, long index, int *used, VALUE values)
+permute0(const long n, const long r, long *const p, char *const used, const VALUE values)
 {
-    long i,j;
-    for (i = 0; i < n; i++) {
-	if (used[i] == 0) {
+    long i = 0, index = 0;
+
+    for (;;) {
+	const char *const unused = memchr(&used[i], 0, n-i);
+	if (!unused) {
+	    if (!index) break;
+	    i = p[--index];                /* pop index */
+	    used[i++] = 0;                 /* index unused */
+	}
+	else {
+	    i = unused - used;
 	    p[index] = i;
+	    used[i] = 1;                   /* mark index used */
+	    ++index;
 	    if (index < r-1) {             /* if not done yet */
-		used[i] = 1;               /* mark index used */
-		permute0(n, r, p, index+1, /* recurse */
-			 used, values);  
-		used[i] = 0;               /* index unused */
+		p[index] = i = 0;
+		continue;
 	    }
-	    else {
-		/* We have a complete permutation of array indexes */
-		/* Build a ruby array of the corresponding values */
-		/* And yield it to the associated block */
-		VALUE result = rb_ary_new2(r);
-		VALUE *result_array = RARRAY_PTR(result);
-		const VALUE *values_array = RARRAY_PTR(values);
-
-		for (j = 0; j < r; j++) result_array[j] = values_array[p[j]];
-		ARY_SET_LEN(result, r);
-		rb_yield(result);
+	    for (i = 0; i < n; ++i) {
+		if (used[i]) continue;
+		p[index] = i;
+		if (!yield_indexed_values(values, r, p)) {
+		    rb_raise(rb_eRuntimeError, "permute reentered");
+		}
 	    }
+	    i = p[--index];                /* pop index */
+	    used[i] = 0;                   /* index unused */
+	    p[index] = ++i;
 	}
     }
 }
 
 /*
+ * Returns the product of from, from-1, ..., from - how_many + 1.
+ * https://en.wikipedia.org/wiki/Pochhammer_symbol
+ */
+static VALUE
+descending_factorial(long from, long how_many)
+{
+    VALUE cnt;
+    if (how_many > 0) {
+	cnt = LONG2FIX(from);
+	while (--how_many > 0) {
+	    long v = --from;
+	    cnt = rb_int_mul(cnt, LONG2FIX(v));
+	}
+    }
+    else {
+	cnt = LONG2FIX(how_many == 0);
+    }
+    return cnt;
+}
+
+static VALUE
+binomial_coefficient(long comb, long size)
+{
+    VALUE r;
+    long i;
+    if (comb > size-comb) {
+	comb = size-comb;
+    }
+    if (comb < 0) {
+	return LONG2FIX(0);
+    }
+    else if (comb == 0) {
+	return LONG2FIX(1);
+    }
+    r = LONG2FIX(size);
+    for (i = 1; i < comb; ++i) {
+	r = rb_int_mul(r, LONG2FIX(size - i));
+	r = rb_int_idiv(r, LONG2FIX(i + 1));
+    }
+    return r;
+}
+
+static VALUE
+rb_ary_permutation_size(VALUE ary, VALUE args, VALUE eobj)
+{
+    long n = RARRAY_LEN(ary);
+    long k = (args && (RARRAY_LEN(args) > 0)) ? NUM2LONG(RARRAY_AREF(args, 0)) : n;
+
+    return descending_factorial(n, k);
+}
+
+/*
  *  call-seq:
- *     ary.permutation { |p| block }          -> array
- *     ary.permutation                        -> enumerator
- *     ary.permutation(n) { |p| block }       -> array
- *     ary.permutation(n)                     -> enumerator
- *  
- * When invoked with a block, yield all permutations of length <i>n</i>
- * of the elements of <i>ary</i>, then return the array itself.
- * If <i>n</i> is not specified, yield all permutations of all elements.
- * The implementation makes no guarantees about the order in which 
- * the permutations are yielded.
+ *    array.permutation {|element| ... } -> self
+ *    array.permutation(n) {|element| ... } -> self
+ *    array.permutation -> new_enumerator
+ *    array.permutation(n) -> new_enumerator
+ *
+ *  When invoked with a block, yield all permutations of elements of +self+; returns +self+.
+ *  The order of permutations is indeterminate.
+ *
+ *  When a block and an in-range positive \Integer argument +n+ (<tt>0 < n <= self.size</tt>)
+ *  are given, calls the block with all +n+-tuple permutations of +self+.
+ *
+ *  Example:
+ *    a = [0, 1, 2]
+ *    a.permutation(2) {|permutation| p permutation }
+ *  Output:
+ *    [0, 1]
+ *    [0, 2]
+ *    [1, 0]
+ *    [1, 2]
+ *    [2, 0]
+ *    [2, 1]
+ *  Another example:
+ *    a = [0, 1, 2]
+ *    a.permutation(3) {|permutation| p permutation }
+ *  Output:
+ *    [0, 1, 2]
+ *    [0, 2, 1]
+ *    [1, 0, 2]
+ *    [1, 2, 0]
+ *    [2, 0, 1]
+ *    [2, 1, 0]
+ *
+ *  When +n+ is zero, calls the block once with a new empty \Array:
+ *    a = [0, 1, 2]
+ *    a.permutation(0) {|permutation| p permutation }
+ *  Output:
+ *    []
+ *
+ *  When +n+ is out of range (negative or larger than <tt>self.size</tt>),
+ *  does not call the block:
+ *    a = [0, 1, 2]
+ *    a.permutation(-1) {|permutation| fail 'Cannot happen' }
+ *    a.permutation(4) {|permutation| fail 'Cannot happen' }
  *
- * When invoked without a block, return an enumerator object instead.
- * 
- * Examples:
+ *  When a block given but no argument,
+ *  behaves the same as <tt>a.permutation(a.size)</tt>:
+ *    a = [0, 1, 2]
+ *    a.permutation {|permutation| p permutation }
+ *  Output:
+ *    [0, 1, 2]
+ *    [0, 2, 1]
+ *    [1, 0, 2]
+ *    [1, 2, 0]
+ *    [2, 0, 1]
+ *    [2, 1, 0]
  *
- *     a = [1, 2, 3]
- *     a.permutation.to_a     #=> [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]
- *     a.permutation(1).to_a  #=> [[1],[2],[3]]
- *     a.permutation(2).to_a  #=> [[1,2],[1,3],[2,1],[2,3],[3,1],[3,2]]
- *     a.permutation(3).to_a  #=> [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]
- *     a.permutation(0).to_a  #=> [[]] # one permutation of length 0
- *     a.permutation(4).to_a  #=> []   # no permutations of length 4
+ *  Returns a new \Enumerator if no block given:
+ *    a = [0, 1, 2]
+ *    a.permutation # => #<Enumerator: [0, 1, 2]:permutation>
+ *    a.permutation(2) # => #<Enumerator: [0, 1, 2]:permutation(2)>
  */
 
 static VALUE
 rb_ary_permutation(int argc, VALUE *argv, VALUE ary)
 {
-    VALUE num;
     long r, n, i;
 
     n = RARRAY_LEN(ary);                  /* Array length */
-    RETURN_ENUMERATOR(ary, argc, argv);   /* Return enumerator if no block */
-    rb_scan_args(argc, argv, "01", &num);
-    r = NIL_P(num) ? n : NUM2LONG(num);   /* Permutation size from argument */
+    RETURN_SIZED_ENUMERATOR(ary, argc, argv, rb_ary_permutation_size);   /* Return enumerator if no block */
+    r = n;
+    if (rb_check_arity(argc, 0, 1) && !NIL_P(argv[0]))
+        r = NUM2LONG(argv[0]);            /* Permutation size from argument */
 
-    if (r < 0 || n < r) { 
+    if (r < 0 || n < r) {
 	/* no permutations: yield nothing */
     }
     else if (r == 0) { /* exactly one permutation: the zero-length array */
@@ -3487,78 +6751,104 @@ rb_ary_permutation(int argc, VALUE *argv, VALUE ary)
     }
     else if (r == 1) { /* this is a special, easy case */
 	for (i = 0; i < RARRAY_LEN(ary); i++) {
-	    rb_yield(rb_ary_new3(1, RARRAY_PTR(ary)[i]));
+	    rb_yield(rb_ary_new3(1, RARRAY_AREF(ary, i)));
 	}
     }
     else {             /* this is the general case */
-	volatile VALUE t0 = tmpbuf(n,sizeof(long));
-	long *p = (long*)RSTRING_PTR(t0);
-	volatile VALUE t1 = tmpbuf(n,sizeof(int));
-	int *used = (int*)RSTRING_PTR(t1);
-	VALUE ary0 = ary_make_substitution(ary); /* private defensive copy of ary */
-	RBASIC(ary0)->klass = 0;
+	volatile VALUE t0;
+	long *p = ALLOCV_N(long, t0, r+roomof(n, sizeof(long)));
+	char *used = (char*)(p + r);
+	VALUE ary0 = ary_make_shared_copy(ary); /* private defensive copy of ary */
+	RBASIC_CLEAR_CLASS(ary0);
 
-	for (i = 0; i < n; i++) used[i] = 0; /* initialize array */
+	MEMZERO(used, char, n); /* initialize array */
 
-	permute0(n, r, p, 0, used, ary0); /* compute and yield permutations */
-	RB_GC_GUARD(t0);
-	RB_GC_GUARD(t1);
-	RBASIC(ary0)->klass = rb_cArray;
+	permute0(n, r, p, used, ary0); /* compute and yield permutations */
+	ALLOCV_END(t0);
+	RBASIC_SET_CLASS_RAW(ary0, rb_cArray);
     }
     return ary;
 }
 
-static long
-combi_len(long n, long k)
+static void
+combinate0(const long len, const long n, long *const stack, const VALUE values)
 {
-    long i, val = 1;
+    long lev = 0;
 
-    if (k*2 > n) k = n-k;
-    if (k == 0) return 1;
-    if (k < 0) return 0;
-    val = 1;
-    for (i=1; i <= k; i++,n--) {
-	long m = val;
-	val *= n;
-	if (val < m) {
-	    rb_raise(rb_eRangeError, "too big for combination");
+    MEMZERO(stack+1, long, n);
+    stack[0] = -1;
+    for (;;) {
+	for (lev++; lev < n; lev++) {
+	    stack[lev+1] = stack[lev]+1;
+	}
+	if (!yield_indexed_values(values, n, stack+1)) {
+	    rb_raise(rb_eRuntimeError, "combination reentered");
 	}
-	val /= i;
+	do {
+	    if (lev == 0) return;
+	    stack[lev--]++;
+	} while (stack[lev+1]+n == len+lev+1);
     }
-    return val;
+}
+
+static VALUE
+rb_ary_combination_size(VALUE ary, VALUE args, VALUE eobj)
+{
+    long n = RARRAY_LEN(ary);
+    long k = NUM2LONG(RARRAY_AREF(args, 0));
+
+    return binomial_coefficient(k, n);
 }
 
 /*
  *  call-seq:
- *     ary.combination(n) { |c| block }    -> ary
- *     ary.combination(n)                  -> enumerator
- *  
- * When invoked with a block, yields all combinations of length <i>n</i> 
- * of elements from <i>ary</i> and then returns <i>ary</i> itself.
- * The implementation makes no guarantees about the order in which 
- * the combinations are yielded.
+ *    array.combination(n) {|element| ... } -> self
+ *    array.combination(n) -> new_enumerator
+ *
+ *  Calls the block, if given, with combinations of elements of +self+;
+ *  returns +self+. The order of combinations is indeterminate.
+ *
+ *  When a block and an in-range positive \Integer argument +n+ (<tt>0 < n <= self.size</tt>)
+ *  are given, calls the block with all +n+-tuple combinations of +self+.
+ *
+ *  Example:
+ *    a = [0, 1, 2]
+ *    a.combination(2) {|combination| p combination }
+ *  Output:
+ *    [0, 1]
+ *    [0, 2]
+ *    [1, 2]
  *
- * When invoked without a block, returns an enumerator object instead.
- *     
- * Examples:
+ *  Another example:
+ *    a = [0, 1, 2]
+ *    a.combination(3) {|combination| p combination }
+ *  Output:
+ *    [0, 1, 2]
  *
- *     a = [1, 2, 3, 4]
- *     a.combination(1).to_a  #=> [[1],[2],[3],[4]]
- *     a.combination(2).to_a  #=> [[1,2],[1,3],[1,4],[2,3],[2,4],[3,4]]
- *     a.combination(3).to_a  #=> [[1,2,3],[1,2,4],[1,3,4],[2,3,4]]
- *     a.combination(4).to_a  #=> [[1,2,3,4]]
- *     a.combination(0).to_a  #=> [[]] # one combination of length 0
- *     a.combination(5).to_a  #=> []   # no combinations of length 5
- *     
+ *  When +n+ is zero, calls the block once with a new empty \Array:
+ *    a = [0, 1, 2]
+ *    a1 = a.combination(0) {|combination| p combination }
+ *  Output:
+ *    []
+ *
+ *  When +n+ is out of range (negative or larger than <tt>self.size</tt>),
+ *  does not call the block:
+ *    a = [0, 1, 2]
+ *    a.combination(-1) {|combination| fail 'Cannot happen' }
+ *    a.combination(4) {|combination| fail 'Cannot happen' }
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [0, 1, 2]
+ *    a.combination(2) # => #<Enumerator: [0, 1, 2]:combination(2)>
  */
 
 static VALUE
 rb_ary_combination(VALUE ary, VALUE num)
 {
-    long n, i, len;
+    long i, n, len;
 
     n = NUM2LONG(num);
-    RETURN_ENUMERATOR(ary, 1, &num);
+    RETURN_SIZED_ENUMERATOR(ary, 1, &num, rb_ary_combination_size);
     len = RARRAY_LEN(ary);
     if (n < 0 || len < n) {
 	/* yield nothing */
@@ -3567,86 +6857,378 @@ rb_ary_combination(VALUE ary, VALUE num)
 	rb_yield(rb_ary_new2(0));
     }
     else if (n == 1) {
-	for (i = 0; i < len; i++) {
-	    rb_yield(rb_ary_new3(1, RARRAY_PTR(ary)[i]));
+	for (i = 0; i < RARRAY_LEN(ary); i++) {
+	    rb_yield(rb_ary_new3(1, RARRAY_AREF(ary, i)));
 	}
     }
     else {
-	volatile VALUE t0 = tmpbuf(n+1, sizeof(long));
-	long *stack = (long*)RSTRING_PTR(t0);
-	long nlen = combi_len(len, n);
-	volatile VALUE cc = rb_ary_new2(n);
-	VALUE *chosen = RARRAY_PTR(cc);
-	long lev = 0;
-
-	RBASIC(cc)->klass = 0;
-	MEMZERO(stack, long, n);
-	stack[0] = -1;
-	for (i = 0; i < nlen; i++) {
-	    chosen[lev] = RARRAY_PTR(ary)[stack[lev+1]];
-	    for (lev++; lev < n; lev++) {
-		chosen[lev] = RARRAY_PTR(ary)[stack[lev+1] = stack[lev]+1];
+	VALUE ary0 = ary_make_shared_copy(ary); /* private defensive copy of ary */
+	volatile VALUE t0;
+	long *stack = ALLOCV_N(long, t0, n+1);
+
+	RBASIC_CLEAR_CLASS(ary0);
+	combinate0(len, n, stack, ary0);
+	ALLOCV_END(t0);
+	RBASIC_SET_CLASS_RAW(ary0, rb_cArray);
+    }
+    return ary;
+}
+
+/*
+ * Compute repeated permutations of +r+ elements of the set
+ * <code>[0..n-1]</code>.
+ *
+ * When we have a complete repeated permutation of array indices, copy the
+ * values at those indices into a new array and yield that array.
+ *
+ * n: the size of the set
+ * r: the number of elements in each permutation
+ * p: the array (of size r) that we're filling in
+ * values: the Ruby array that holds the actual values to permute
+ */
+static void
+rpermute0(const long n, const long r, long *const p, const VALUE values)
+{
+    long i = 0, index = 0;
+
+    p[index] = i;
+    for (;;) {
+	if (++index < r-1) {
+	    p[index] = i = 0;
+	    continue;
+	}
+	for (i = 0; i < n; ++i) {
+	    p[index] = i;
+	    if (!yield_indexed_values(values, r, p)) {
+		rb_raise(rb_eRuntimeError, "repeated permute reentered");
 	    }
-	    rb_yield(rb_ary_new4(n, chosen));
-	    do {
-		stack[lev--]++;
-	    } while (lev && (stack[lev+1]+n == len+lev+1));
+	}
+	do {
+	    if (index <= 0) return;
+	} while ((i = ++p[--index]) >= n);
+    }
+}
+
+static VALUE
+rb_ary_repeated_permutation_size(VALUE ary, VALUE args, VALUE eobj)
+{
+    long n = RARRAY_LEN(ary);
+    long k = NUM2LONG(RARRAY_AREF(args, 0));
+
+    if (k < 0) {
+	return LONG2FIX(0);
+    }
+    if (n <= 0) {
+	return LONG2FIX(!k);
+    }
+    return rb_int_positive_pow(n, (unsigned long)k);
+}
+
+/*
+ *  call-seq:
+ *    array.repeated_permutation(n) {|permutation| ... } -> self
+ *    array.repeated_permutation(n) -> new_enumerator
+ *
+ *  Calls the block with each repeated permutation of length +n+ of the elements of +self+;
+ *  each permutation is an \Array;
+ *  returns +self+. The order of the permutations is indeterminate.
+ *
+ *  When a block and a positive \Integer argument +n+ are given, calls the block with each
+ *  +n+-tuple repeated permutation of the elements of +self+.
+ *  The number of permutations is <tt>self.size**n</tt>.
+ *
+ *  +n+ = 1:
+ *    a = [0, 1, 2]
+ *    a.repeated_permutation(1) {|permutation| p permutation }
+ *  Output:
+ *    [0]
+ *    [1]
+ *    [2]
+ *
+ *  +n+ = 2:
+ *    a.repeated_permutation(2) {|permutation| p permutation }
+ *  Output:
+ *    [0, 0]
+ *    [0, 1]
+ *    [0, 2]
+ *    [1, 0]
+ *    [1, 1]
+ *    [1, 2]
+ *    [2, 0]
+ *    [2, 1]
+ *    [2, 2]
+ *
+ *  If +n+ is zero, calls the block once with an empty \Array.
+ *
+ *  If +n+ is negative, does not call the block:
+ *    a.repeated_permutation(-1) {|permutation| fail 'Cannot happen' }
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [0, 1, 2]
+ *    a.repeated_permutation(2) # => #<Enumerator: [0, 1, 2]:permutation(2)>
+ *
+ *  Using Enumerators, it's convenient to show the permutations and counts
+ *  for some values of +n+:
+ *    e = a.repeated_permutation(0)
+ *    e.size # => 1
+ *    e.to_a # => [[]]
+ *    e = a.repeated_permutation(1)
+ *    e.size # => 3
+ *    e.to_a # => [[0], [1], [2]]
+ *    e = a.repeated_permutation(2)
+ *    e.size # => 9
+ *    e.to_a # => [[0, 0], [0, 1], [0, 2], [1, 0], [1, 1], [1, 2], [2, 0], [2, 1], [2, 2]]
+ */
+static VALUE
+rb_ary_repeated_permutation(VALUE ary, VALUE num)
+{
+    long r, n, i;
+
+    n = RARRAY_LEN(ary);                  /* Array length */
+    RETURN_SIZED_ENUMERATOR(ary, 1, &num, rb_ary_repeated_permutation_size);      /* Return Enumerator if no block */
+    r = NUM2LONG(num);                    /* Permutation size from argument */
+
+    if (r < 0) {
+	/* no permutations: yield nothing */
+    }
+    else if (r == 0) { /* exactly one permutation: the zero-length array */
+	rb_yield(rb_ary_new2(0));
+    }
+    else if (r == 1) { /* this is a special, easy case */
+	for (i = 0; i < RARRAY_LEN(ary); i++) {
+	    rb_yield(rb_ary_new3(1, RARRAY_AREF(ary, i)));
 	}
     }
+    else {             /* this is the general case */
+	volatile VALUE t0;
+	long *p = ALLOCV_N(long, t0, r);
+	VALUE ary0 = ary_make_shared_copy(ary); /* private defensive copy of ary */
+	RBASIC_CLEAR_CLASS(ary0);
+
+	rpermute0(n, r, p, ary0); /* compute and yield repeated permutations */
+	ALLOCV_END(t0);
+	RBASIC_SET_CLASS_RAW(ary0, rb_cArray);
+    }
     return ary;
 }
 
+static void
+rcombinate0(const long n, const long r, long *const p, const long rest, const VALUE values)
+{
+    long i = 0, index = 0;
+
+    p[index] = i;
+    for (;;) {
+	if (++index < r-1) {
+	    p[index] = i;
+	    continue;
+	}
+	for (; i < n; ++i) {
+	    p[index] = i;
+	    if (!yield_indexed_values(values, r, p)) {
+		rb_raise(rb_eRuntimeError, "repeated combination reentered");
+	    }
+	}
+	do {
+	    if (index <= 0) return;
+	} while ((i = ++p[--index]) >= n);
+    }
+}
+
+static VALUE
+rb_ary_repeated_combination_size(VALUE ary, VALUE args, VALUE eobj)
+{
+    long n = RARRAY_LEN(ary);
+    long k = NUM2LONG(RARRAY_AREF(args, 0));
+    if (k == 0) {
+	return LONG2FIX(1);
+    }
+    return binomial_coefficient(k, n + k - 1);
+}
+
 /*
  *  call-seq:
- *     ary.product(other_ary, ...)
- *  
- *  Returns an array of all combinations of elements from all arrays.
- *  The length of the returned array is the product of the length
- *  of ary and the argument arrays
- *     
- *     [1,2,3].product([4,5])     # => [[1,4],[1,5],[2,4],[2,5],[3,4],[3,5]]
- *     [1,2].product([1,2])       # => [[1,1],[1,2],[2,1],[2,2]]
- *     [1,2].product([3,4],[5,6]) # => [[1,3,5],[1,3,6],[1,4,5],[1,4,6],
- *                                #     [2,3,5],[2,3,6],[2,4,5],[2,4,6]]
- *     [1,2].product()            # => [[1],[2]]
- *     [1,2].product([])          # => []
+ *    array.repeated_combination(n) {|combination| ... } -> self
+ *    array.repeated_combination(n) -> new_enumerator
+ *
+ *  Calls the block with each repeated combination of length +n+ of the elements of +self+;
+ *  each combination is an \Array;
+ *  returns +self+. The order of the combinations is indeterminate.
+ *
+ *  When a block and a positive \Integer argument +n+ are given, calls the block with each
+ *  +n+-tuple repeated combination of the elements of +self+.
+ *  The number of combinations is <tt>(n+1)(n+2)/2</tt>.
+ *
+ *  +n+ = 1:
+ *    a = [0, 1, 2]
+ *    a.repeated_combination(1) {|combination| p combination }
+ *  Output:
+ *    [0]
+ *    [1]
+ *    [2]
+ *
+ *  +n+ = 2:
+ *    a.repeated_combination(2) {|combination| p combination }
+ *  Output:
+ *    [0, 0]
+ *    [0, 1]
+ *    [0, 2]
+ *    [1, 1]
+ *    [1, 2]
+ *    [2, 2]
+ *
+ *  If +n+ is zero, calls the block once with an empty \Array.
+ *
+ *  If +n+ is negative, does not call the block:
+ *    a.repeated_combination(-1) {|combination| fail 'Cannot happen' }
+ *
+ *  Returns a new \Enumerator if no block given:
+ *    a = [0, 1, 2]
+ *    a.repeated_combination(2) # => #<Enumerator: [0, 1, 2]:combination(2)>
+ *
+ *  Using Enumerators, it's convenient to show the combinations and counts
+ *  for some values of +n+:
+ *    e = a.repeated_combination(0)
+ *    e.size # => 1
+ *    e.to_a # => [[]]
+ *    e = a.repeated_combination(1)
+ *    e.size # => 3
+ *    e.to_a # => [[0], [1], [2]]
+ *    e = a.repeated_combination(2)
+ *    e.size # => 6
+ *    e.to_a # => [[0, 0], [0, 1], [0, 2], [1, 1], [1, 2], [2, 2]]
+ */
+
+static VALUE
+rb_ary_repeated_combination(VALUE ary, VALUE num)
+{
+    long n, i, len;
+
+    n = NUM2LONG(num);                 /* Combination size from argument */
+    RETURN_SIZED_ENUMERATOR(ary, 1, &num, rb_ary_repeated_combination_size);   /* Return enumerator if no block */
+    len = RARRAY_LEN(ary);
+    if (n < 0) {
+	/* yield nothing */
+    }
+    else if (n == 0) {
+	rb_yield(rb_ary_new2(0));
+    }
+    else if (n == 1) {
+	for (i = 0; i < RARRAY_LEN(ary); i++) {
+	    rb_yield(rb_ary_new3(1, RARRAY_AREF(ary, i)));
+	}
+    }
+    else if (len == 0) {
+	/* yield nothing */
+    }
+    else {
+	volatile VALUE t0;
+	long *p = ALLOCV_N(long, t0, n);
+	VALUE ary0 = ary_make_shared_copy(ary); /* private defensive copy of ary */
+	RBASIC_CLEAR_CLASS(ary0);
+
+	rcombinate0(len, n, p, n, ary0); /* compute and yield repeated combinations */
+	ALLOCV_END(t0);
+	RBASIC_SET_CLASS_RAW(ary0, rb_cArray);
+    }
+    return ary;
+}
+
+/*
+ *  call-seq:
+ *    array.product(*other_arrays) -> new_array
+ *    array.product(*other_arrays) {|combination| ... } -> self
+ *
+ *  Computes and returns or yields all combinations of elements from all the Arrays,
+ *  including both +self+ and +other_arrays+.
+ *  - The number of combinations is the product of the sizes of all the arrays,
+ *    including both +self+ and +other_arrays+.
+ *  - The order of the returned combinations is indeterminate.
+ *
+ *  When no block is given, returns the combinations as an \Array of Arrays:
+ *    a = [0, 1, 2]
+ *    a1 = [3, 4]
+ *    a2 = [5, 6]
+ *    p = a.product(a1)
+ *    p.size # => 6 # a.size * a1.size
+ *    p # => [[0, 3], [0, 4], [1, 3], [1, 4], [2, 3], [2, 4]]
+ *    p = a.product(a1, a2)
+ *    p.size # => 12 # a.size * a1.size * a2.size
+ *    p # => [[0, 3, 5], [0, 3, 6], [0, 4, 5], [0, 4, 6], [1, 3, 5], [1, 3, 6], [1, 4, 5], [1, 4, 6], [2, 3, 5], [2, 3, 6], [2, 4, 5], [2, 4, 6]]
+ *
+ *  If any argument is an empty \Array, returns an empty \Array.
+ *
+ *  If no argument is given, returns an \Array of 1-element Arrays,
+ *  each containing an element of +self+:
+ *    a.product # => [[0], [1], [2]]
+ *
+ *  When a block is given, yields each combination as an \Array; returns +self+:
+ *    a.product(a1) {|combination| p combination }
+ *  Output:
+ *    [0, 3]
+ *    [0, 4]
+ *    [1, 3]
+ *    [1, 4]
+ *    [2, 3]
+ *    [2, 4]
+ *
+ *  If any argument is an empty \Array, does not call the block:
+ *    a.product(a1, a2, []) {|combination| fail 'Cannot happen' }
+ *
+ *  If no argument is given, yields each element of +self+ as a 1-element \Array:
+ *    a.product {|combination| p combination }
+ *  Output:
+ *    [0]
+ *    [1]
+ *    [2]
  */
 
 static VALUE
 rb_ary_product(int argc, VALUE *argv, VALUE ary)
 {
     int n = argc+1;    /* How many arrays we're operating on */
-    volatile VALUE t0 = tmpbuf(n, sizeof(VALUE));
-    volatile VALUE t1 = tmpbuf(n, sizeof(int));
-    VALUE *arrays = (VALUE*)RSTRING_PTR(t0); /* The arrays we're computing the product of */
-    int *counters = (int*)RSTRING_PTR(t1); /* The current position in each one */
-    VALUE result;      /* The array we'll be returning */
+    volatile VALUE t0 = tmpary(n);
+    volatile VALUE t1 = Qundef;
+    VALUE *arrays = RARRAY_PTR(t0); /* The arrays we're computing the product of */
+    int *counters = ALLOCV_N(int, t1, n); /* The current position in each one */
+    VALUE result = Qnil;      /* The array we'll be returning, when no block given */
     long i,j;
     long resultlen = 1;
 
-    RBASIC(t0)->klass = 0;
-    RBASIC(t1)->klass = 0;
+    RBASIC_CLEAR_CLASS(t0);
 
     /* initialize the arrays of arrays */
+    ARY_SET_LEN(t0, n);
     arrays[0] = ary;
+    for (i = 1; i < n; i++) arrays[i] = Qnil;
     for (i = 1; i < n; i++) arrays[i] = to_ary(argv[i-1]);
-    
+
     /* initialize the counters for the arrays */
     for (i = 0; i < n; i++) counters[i] = 0;
 
-    /* Compute the length of the result array; return [] if any is empty */
-    for (i = 0; i < n; i++) {
-	long k = RARRAY_LEN(arrays[i]), l = resultlen;
-	if (k == 0) return rb_ary_new2(0);
-	resultlen *= k;
-	if (resultlen < k || resultlen < l || resultlen / k != l) {
-	    rb_raise(rb_eRangeError, "too big to product");
+    /* Otherwise, allocate and fill in an array of results */
+    if (rb_block_given_p()) {
+	/* Make defensive copies of arrays; exit if any is empty */
+	for (i = 0; i < n; i++) {
+	    if (RARRAY_LEN(arrays[i]) == 0) goto done;
+	    arrays[i] = ary_make_shared_copy(arrays[i]);
 	}
     }
-
-    /* Otherwise, allocate and fill in an array of results */
-    result = rb_ary_new2(resultlen);
-    for (i = 0; i < resultlen; i++) {
+    else {
+	/* Compute the length of the result array; return [] if any is empty */
+	for (i = 0; i < n; i++) {
+	    long k = RARRAY_LEN(arrays[i]);
+	    if (k == 0) {
+		result = rb_ary_new2(0);
+		goto done;
+	    }
+            if (MUL_OVERFLOW_LONG_P(resultlen, k))
+		rb_raise(rb_eRangeError, "too big to product");
+	    resultlen *= k;
+	}
+	result = rb_ary_new2(resultlen);
+    }
+    for (;;) {
 	int m;
 	/* fill in one subarray */
 	VALUE subarray = rb_ary_new2(n);
@@ -3655,7 +7237,19 @@ rb_ary_product(int argc, VALUE *argv, VALUE ary)
 	}
 
 	/* put it on the result array */
-	rb_ary_push(result, subarray);
+	if (NIL_P(result)) {
+	    FL_SET(t0, FL_USER5);
+	    rb_yield(subarray);
+	    if (! FL_TEST(t0, FL_USER5)) {
+		rb_raise(rb_eRuntimeError, "product reentered");
+	    }
+	    else {
+		FL_UNSET(t0, FL_USER5);
+	    }
+	}
+	else {
+	    rb_ary_push(result, subarray);
+	}
 
 	/*
 	 * Increment the last counter.  If it overflows, reset to 0
@@ -3663,25 +7257,34 @@ rb_ary_product(int argc, VALUE *argv, VALUE ary)
 	 */
 	m = n-1;
 	counters[m]++;
-	while (m > 0 && counters[m] == RARRAY_LEN(arrays[m])) {
+	while (counters[m] == RARRAY_LEN(arrays[m])) {
 	    counters[m] = 0;
-	    m--;
+	    /* If the first counter overflows, we are done */
+	    if (--m < 0) goto done;
 	    counters[m]++;
 	}
     }
+done:
+    tmpary_discard(t0);
+    ALLOCV_END(t1);
 
-    return result;
+    return NIL_P(result) ? ary : result;
 }
 
 /*
  *  call-seq:
- *     ary.take(n)               => array
- *  
- *  Returns first n elements from <i>ary</i>.
- *     
- *     a = [1, 2, 3, 4, 5, 0]
- *     a.take(3)             # => [1, 2, 3]
- *     
+ *    array.take(n) -> new_array
+ *
+ *  Returns a new \Array containing the first +n+ element of +self+,
+ *  where +n+ is a non-negative \Integer;
+ *  does not modify +self+.
+ *
+ *  Examples:
+ *    a = [0, 1, 2, 3, 4, 5]
+ *    a.take(1) # => [0]
+ *    a.take(2) # => [0, 1]
+ *    a.take(50) # => [0, 1, 2, 3, 4, 5]
+ *    a # => [0, 1, 2, 3, 4, 5]
  */
 
 static VALUE
@@ -3696,14 +7299,22 @@ rb_ary_take(VALUE obj, VALUE n)
 
 /*
  *  call-seq:
- *     ary.take_while {|arr| block }   => array
- *  
- *  Passes elements to the block until the block returns nil or false,
- *  then stops iterating and returns an array of all prior elements.
- *     
- *     a = [1, 2, 3, 4, 5, 0]
- *     a.take_while {|i| i < 3 }   # => [1, 2]
- *     
+ *    array.take_while {|element| ... } -> new_array
+ *    array.take_while -> new_enumerator
+ *
+ *  Returns a new \Array containing zero or more leading elements of +self+;
+ *  does not modify +self+.
+ *
+ *  With a block given, calls the block with each successive element of +self+;
+ *  stops if the block returns +false+ or +nil+;
+ *  returns a new Array containing those elements for which the block returned a truthy value:
+ *    a = [0, 1, 2, 3, 4, 5]
+ *    a.take_while {|element| element < 3 } # => [0, 1, 2]
+ *    a.take_while {|element| true } # => [0, 1, 2, 3, 4, 5]
+ *    a # => [0, 1, 2, 3, 4, 5]
+ *
+ *  With no block given, returns a new \Enumerator:
+ *    [0, 1].take_while # => #<Enumerator: [0, 1]:take_while>
  */
 
 static VALUE
@@ -3713,21 +7324,24 @@ rb_ary_take_while(VALUE ary)
 
     RETURN_ENUMERATOR(ary, 0, 0);
     for (i = 0; i < RARRAY_LEN(ary); i++) {
-	if (!RTEST(rb_yield(RARRAY_PTR(ary)[i]))) break;
+	if (!RTEST(rb_yield(RARRAY_AREF(ary, i)))) break;
     }
     return rb_ary_take(ary, LONG2FIX(i));
 }
 
 /*
  *  call-seq:
- *     ary.drop(n)               => array
- *  
- *  Drops first n elements from <i>ary</i>, and returns rest elements
- *  in an array.
- *     
- *     a = [1, 2, 3, 4, 5, 0]
- *     a.drop(3)             # => [4, 5, 0]
- *     
+ *    array.drop(n) -> new_array
+ *
+ *  Returns a new \Array containing all but the first +n+ element of +self+,
+ *  where +n+ is a non-negative \Integer;
+ *  does not modify +self+.
+ *
+ *  Examples:
+ *    a = [0, 1, 2, 3, 4, 5]
+ *    a.drop(0) # => [0, 1, 2, 3, 4, 5]
+ *    a.drop(1) # => [1, 2, 3, 4, 5]
+ *    a.drop(2) # => [2, 3, 4, 5]
  */
 
 static VALUE
@@ -3746,15 +7360,20 @@ rb_ary_drop(VALUE ary, VALUE n)
 
 /*
  *  call-seq:
- *     ary.drop_while {|arr| block }   => array
- *  
- *  Drops elements up to, but not including, the first element for
- *  which the block returns nil or false and returns an array
- *  containing the remaining elements.
- *     
- *     a = [1, 2, 3, 4, 5, 0]
- *     a.drop_while {|i| i < 3 }   # => [3, 4, 5, 0]
- *     
+ *    array.drop_while {|element| ... } -> new_array
+ *    array.drop_while -> new_enumerator
+
+ *  Returns a new \Array containing zero or more trailing elements of +self+;
+ *  does not modify +self+.
+ *
+ *  With a block given, calls the block with each successive element of +self+;
+ *  stops if the block returns +false+ or +nil+;
+ *  returns a new Array _omitting_ those elements for which the block returned a truthy value:
+ *    a = [0, 1, 2, 3, 4, 5]
+ *    a.drop_while {|element| element < 3 } # => [3, 4, 5]
+ *
+ *  With no block given, returns a new \Enumerator:
+ *    [0, 1].drop_while # => # => #<Enumerator: [0, 1]:drop_while>
  */
 
 static VALUE
@@ -3764,40 +7383,718 @@ rb_ary_drop_while(VALUE ary)
 
     RETURN_ENUMERATOR(ary, 0, 0);
     for (i = 0; i < RARRAY_LEN(ary); i++) {
-	if (!RTEST(rb_yield(RARRAY_PTR(ary)[i]))) break;
+	if (!RTEST(rb_yield(RARRAY_AREF(ary, i)))) break;
     }
     return rb_ary_drop(ary, LONG2FIX(i));
 }
 
+/*
+ *  call-seq:
+ *    array.any? -> true or false
+ *    array.any? {|element| ... } -> true or false
+ *    array.any?(obj) -> true or false
+ *
+ *  Returns +true+ if any element of +self+ meets a given criterion.
+ *
+ *  With no block given and no argument, returns +true+ if +self+ has any truthy element,
+ *  +false+ otherwise:
+ *    [nil, 0, false].any? # => true
+ *    [nil, false].any? # => false
+ *    [].any? # => false
+ *
+ *  With a block given and no argument, calls the block with each element in +self+;
+ *  returns +true+ if the block returns any truthy value, +false+ otherwise:
+ *    [0, 1, 2].any? {|element| element > 1 } # => true
+ *    [0, 1, 2].any? {|element| element > 2 } # => false
+ *
+ *  If argument +obj+ is given, returns +true+ if +obj+.<tt>===</tt> any element,
+ *  +false+ otherwise:
+ *    ['food', 'drink'].any?(/foo/) # => true
+ *    ['food', 'drink'].any?(/bar/) # => false
+ *    [].any?(/foo/) # => false
+ *    [0, 1, 2].any?(1) # => true
+ *    [0, 1, 2].any?(3) # => false
+ *
+ *  Related: Enumerable#any?
+ */
+
+static VALUE
+rb_ary_any_p(int argc, VALUE *argv, VALUE ary)
+{
+    long i, len = RARRAY_LEN(ary);
+
+    rb_check_arity(argc, 0, 1);
+    if (!len) return Qfalse;
+    if (argc) {
+        if (rb_block_given_p()) {
+            rb_warn("given block not used");
+        }
+	for (i = 0; i < RARRAY_LEN(ary); ++i) {
+	    if (RTEST(rb_funcall(argv[0], idEqq, 1, RARRAY_AREF(ary, i)))) return Qtrue;
+	}
+    }
+    else if (!rb_block_given_p()) {
+        for (i = 0; i < len; ++i) {
+            if (RTEST(RARRAY_AREF(ary, i))) return Qtrue;
+        }
+    }
+    else {
+	for (i = 0; i < RARRAY_LEN(ary); ++i) {
+	    if (RTEST(rb_yield(RARRAY_AREF(ary, i)))) return Qtrue;
+	}
+    }
+    return Qfalse;
+}
+
+/*
+ *  call-seq:
+ *    array.all? -> true or false
+ *    array.all? {|element| ... } -> true or false
+ *    array.all?(obj) -> true or false
+ *
+ *  Returns +true+ if all elements of +self+ meet a given criterion.
+ *
+ *  With no block given and no argument, returns +true+ if +self+ contains only truthy elements,
+ *  +false+ otherwise:
+ *    [0, 1, :foo].all? # => true
+ *    [0, nil, 2].all? # => false
+ *    [].all? # => true
+ *
+ *  With a block given and no argument, calls the block with each element in +self+;
+ *  returns +true+ if the block returns only truthy values, +false+ otherwise:
+ *    [0, 1, 2].all? { |element| element < 3 } # => true
+ *    [0, 1, 2].all? { |element| element < 2 } # => false
+ *
+ *  If argument +obj+ is given, returns +true+ if <tt>obj.===</tt> every element, +false+ otherwise:
+ *    ['food', 'fool', 'foot'].all?(/foo/) # => true
+ *    ['food', 'drink'].all?(/bar/) # => false
+ *    [].all?(/foo/) # => true
+ *    [0, 0, 0].all?(0) # => true
+ *    [0, 1, 2].all?(1) # => false
+ *
+ *  Related: Enumerable#all?
+ */
+
+static VALUE
+rb_ary_all_p(int argc, VALUE *argv, VALUE ary)
+{
+    long i, len = RARRAY_LEN(ary);
+
+    rb_check_arity(argc, 0, 1);
+    if (!len) return Qtrue;
+    if (argc) {
+        if (rb_block_given_p()) {
+            rb_warn("given block not used");
+        }
+        for (i = 0; i < RARRAY_LEN(ary); ++i) {
+            if (!RTEST(rb_funcall(argv[0], idEqq, 1, RARRAY_AREF(ary, i)))) return Qfalse;
+        }
+    }
+    else if (!rb_block_given_p()) {
+        for (i = 0; i < len; ++i) {
+            if (!RTEST(RARRAY_AREF(ary, i))) return Qfalse;
+        }
+    }
+    else {
+        for (i = 0; i < RARRAY_LEN(ary); ++i) {
+            if (!RTEST(rb_yield(RARRAY_AREF(ary, i)))) return Qfalse;
+        }
+    }
+    return Qtrue;
+}
+
+/*
+ *  call-seq:
+ *    array.none? -> true or false
+ *    array.none? {|element| ... } -> true or false
+ *    array.none?(obj) -> true or false
+ *
+ *  Returns +true+ if no element of +self+ meet a given criterion.
+ *
+ *  With no block given and no argument, returns +true+ if +self+ has no truthy elements,
+ *  +false+ otherwise:
+ *    [nil, false].none? # => true
+ *    [nil, 0, false].none? # => false
+ *    [].none? # => true
+ *
+ *  With a block given and no argument, calls the block with each element in +self+;
+ *  returns +true+ if the block returns no truthy value, +false+ otherwise:
+ *    [0, 1, 2].none? {|element| element > 3 } # => true
+ *    [0, 1, 2].none? {|element| element > 1 } # => false
+ *
+ *  If argument +obj+ is given, returns +true+ if <tt>obj.===</tt> no element, +false+ otherwise:
+ *    ['food', 'drink'].none?(/bar/) # => true
+ *    ['food', 'drink'].none?(/foo/) # => false
+ *    [].none?(/foo/) # => true
+ *    [0, 1, 2].none?(3) # => true
+ *    [0, 1, 2].none?(1) # => false
+ *
+ *  Related: Enumerable#none?
+ */
+
+static VALUE
+rb_ary_none_p(int argc, VALUE *argv, VALUE ary)
+{
+    long i, len = RARRAY_LEN(ary);
+
+    rb_check_arity(argc, 0, 1);
+    if (!len) return Qtrue;
+    if (argc) {
+        if (rb_block_given_p()) {
+            rb_warn("given block not used");
+        }
+        for (i = 0; i < RARRAY_LEN(ary); ++i) {
+            if (RTEST(rb_funcall(argv[0], idEqq, 1, RARRAY_AREF(ary, i)))) return Qfalse;
+        }
+    }
+    else if (!rb_block_given_p()) {
+        for (i = 0; i < len; ++i) {
+            if (RTEST(RARRAY_AREF(ary, i))) return Qfalse;
+        }
+    }
+    else {
+        for (i = 0; i < RARRAY_LEN(ary); ++i) {
+            if (RTEST(rb_yield(RARRAY_AREF(ary, i)))) return Qfalse;
+        }
+    }
+    return Qtrue;
+}
+
+/*
+ *  call-seq:
+ *    array.one? -> true or false
+ *    array.one? {|element| ... } -> true or false
+ *    array.one?(obj) -> true or false
+ *
+ *  Returns +true+ if exactly one element of +self+ meets a given criterion.
+ *
+ *  With no block given and no argument, returns +true+ if +self+ has exactly one truthy element,
+ *  +false+ otherwise:
+ *    [nil, 0].one? # => true
+ *    [0, 0].one? # => false
+ *    [nil, nil].one? # => false
+ *    [].one? # => false
+ *
+ *  With a block given and no argument, calls the block with each element in +self+;
+ *  returns +true+ if the block a truthy value for exactly one element, +false+ otherwise:
+ *    [0, 1, 2].one? {|element| element > 0 } # => false
+ *    [0, 1, 2].one? {|element| element > 1 } # => true
+ *    [0, 1, 2].one? {|element| element > 2 } # => false
+ *
+ *  If argument +obj+ is given, returns +true+ if <tt>obj.===</tt> exactly one element,
+ *  +false+ otherwise:
+ *    [0, 1, 2].one?(0) # => true
+ *    [0, 0, 1].one?(0) # => false
+ *    [1, 1, 2].one?(0) # => false
+ *    ['food', 'drink'].one?(/bar/) # => false
+ *    ['food', 'drink'].one?(/foo/) # => true
+ *    [].one?(/foo/) # => false
+ *
+ *  Related: Enumerable#one?
+ */
+
+static VALUE
+rb_ary_one_p(int argc, VALUE *argv, VALUE ary)
+{
+    long i, len = RARRAY_LEN(ary);
+    VALUE result = Qfalse;
+
+    rb_check_arity(argc, 0, 1);
+    if (!len) return Qfalse;
+    if (argc) {
+        if (rb_block_given_p()) {
+            rb_warn("given block not used");
+        }
+        for (i = 0; i < RARRAY_LEN(ary); ++i) {
+            if (RTEST(rb_funcall(argv[0], idEqq, 1, RARRAY_AREF(ary, i)))) {
+                if (result) return Qfalse;
+                result = Qtrue;
+            }
+        }
+    }
+    else if (!rb_block_given_p()) {
+        for (i = 0; i < len; ++i) {
+            if (RTEST(RARRAY_AREF(ary, i))) {
+                if (result) return Qfalse;
+                result = Qtrue;
+            }
+        }
+    }
+    else {
+        for (i = 0; i < RARRAY_LEN(ary); ++i) {
+            if (RTEST(rb_yield(RARRAY_AREF(ary, i)))) {
+                if (result) return Qfalse;
+                result = Qtrue;
+            }
+        }
+    }
+    return result;
+}
+
+/*
+ *  call-seq:
+ *    array.dig(index, *identifiers) -> object
+ *
+ *  Finds and returns the object in nested objects
+ *  that is specified by +index+ and +identifiers+.
+ *  The nested objects may be instances of various classes.
+ *  See {Dig Methods}[rdoc-ref:doc/dig_methods.rdoc].
+ *
+ *  Examples:
+ *    a = [:foo, [:bar, :baz, [:bat, :bam]]]
+ *    a.dig(1) # => [:bar, :baz, [:bat, :bam]]
+ *    a.dig(1, 2) # => [:bat, :bam]
+ *    a.dig(1, 2, 0) # => :bat
+ *    a.dig(1, 2, 3) # => nil
+ */
+
+static VALUE
+rb_ary_dig(int argc, VALUE *argv, VALUE self)
+{
+    rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
+    self = rb_ary_at(self, *argv);
+    if (!--argc) return self;
+    ++argv;
+    return rb_obj_dig(argc, argv, self, Qnil);
+}
+
+static inline VALUE
+finish_exact_sum(long n, VALUE r, VALUE v, int z)
+{
+    if (n != 0)
+        v = rb_fix_plus(LONG2FIX(n), v);
+    if (r != Qundef) {
+        v = rb_rational_plus(r, v);
+    }
+    else if (!n && z) {
+        v = rb_fix_plus(LONG2FIX(0), v);
+    }
+    return v;
+}
+
+/*
+ * call-seq:
+ *   array.sum(init = 0) -> object
+ *   array.sum(init = 0) {|element| ... } -> object
+ *
+ *  When no block is given, returns the object equivalent to:
+ *    sum = init
+ *    array.each {|element| sum += element }
+ *    sum
+ *  For example, <tt>[e1, e2, e3].sum</tt> returns </tt>init + e1 + e2 + e3</tt>.
+ *
+ *  Examples:
+ *    a = [0, 1, 2, 3]
+ *    a.sum # => 6
+ *    a.sum(100) # => 106
+ *
+ *  The elements need not be numeric, but must be <tt>+</tt>-compatible
+ *  with each other and with +init+:
+ *    a = ['abc', 'def', 'ghi']
+ *    a.sum('jkl') # => "jklabcdefghi"
+ *
+ *  When a block is given, it is called with each element
+ *  and the block's return value (instead of the element itself) is used as the addend:
+ *    a = ['zero', 1, :two]
+ *    s = a.sum('Coerced and concatenated: ') {|element| element.to_s }
+ *    s # => "Coerced and concatenated: zero1two"
+ *
+ *  Notes:
+ *  - Array#join and Array#flatten may be faster than Array#sum
+ *    for an \Array of Strings or an \Array of Arrays.
+ *  - Array#sum method may not respect method redefinition of "+" methods such as Integer#+.
+ */
+
+static VALUE
+rb_ary_sum(int argc, VALUE *argv, VALUE ary)
+{
+    VALUE e, v, r;
+    long i, n;
+    int block_given;
 
+    v = (rb_check_arity(argc, 0, 1) ? argv[0] : LONG2FIX(0));
+
+    block_given = rb_block_given_p();
+
+    if (RARRAY_LEN(ary) == 0)
+        return v;
 
-/* Arrays are ordered, integer-indexed collections of any object. 
- * Array indexing starts at 0, as in C or Java.  A negative index is 
- * assumed to be relative to the end of the array---that is, an index of -1 
- * indicates the last element of the array, -2 is the next to last 
- * element in the array, and so on. 
+    n = 0;
+    r = Qundef;
+    for (i = 0; i < RARRAY_LEN(ary); i++) {
+        e = RARRAY_AREF(ary, i);
+        if (block_given)
+            e = rb_yield(e);
+        if (FIXNUM_P(e)) {
+            n += FIX2LONG(e); /* should not overflow long type */
+            if (!FIXABLE(n)) {
+                v = rb_big_plus(LONG2NUM(n), v);
+                n = 0;
+            }
+        }
+        else if (RB_TYPE_P(e, T_BIGNUM))
+            v = rb_big_plus(e, v);
+        else if (RB_TYPE_P(e, T_RATIONAL)) {
+            if (r == Qundef)
+                r = e;
+            else
+                r = rb_rational_plus(r, e);
+        }
+        else
+            goto not_exact;
+    }
+    v = finish_exact_sum(n, r, v, argc!=0);
+    return v;
+
+  not_exact:
+    v = finish_exact_sum(n, r, v, i!=0);
+
+    if (RB_FLOAT_TYPE_P(e)) {
+        /*
+         * Kahan-Babuska balancing compensated summation algorithm
+         * See https://link.springer.com/article/10.1007/s00607-005-0139-x
+         */
+        double f, c;
+        double x, t;
+
+        f = NUM2DBL(v);
+        c = 0.0;
+        goto has_float_value;
+        for (; i < RARRAY_LEN(ary); i++) {
+            e = RARRAY_AREF(ary, i);
+            if (block_given)
+                e = rb_yield(e);
+            if (RB_FLOAT_TYPE_P(e))
+              has_float_value:
+                x = RFLOAT_VALUE(e);
+            else if (FIXNUM_P(e))
+                x = FIX2LONG(e);
+            else if (RB_TYPE_P(e, T_BIGNUM))
+                x = rb_big2dbl(e);
+            else if (RB_TYPE_P(e, T_RATIONAL))
+                x = rb_num2dbl(e);
+            else
+                goto not_float;
+
+            if (isnan(f)) continue;
+            if (isnan(x)) {
+                f = x;
+                continue;
+            }
+            if (isinf(x)) {
+                if (isinf(f) && signbit(x) != signbit(f))
+                    f = NAN;
+                else
+                    f = x;
+                continue;
+            }
+            if (isinf(f)) continue;
+
+            t = f + x;
+            if (fabs(f) >= fabs(x))
+                c += ((f - t) + x);
+            else
+                c += ((x - t) + f);
+            f = t;
+        }
+        f += c;
+        return DBL2NUM(f);
+
+      not_float:
+        v = DBL2NUM(f);
+    }
+
+    goto has_some_value;
+    for (; i < RARRAY_LEN(ary); i++) {
+        e = RARRAY_AREF(ary, i);
+        if (block_given)
+            e = rb_yield(e);
+      has_some_value:
+        v = rb_funcall(v, idPLUS, 1, e);
+    }
+    return v;
+}
+
+static VALUE
+rb_ary_deconstruct(VALUE ary)
+{
+    return ary;
+}
+
+/*
+ *  An \Array is an ordered, integer-indexed collection of objects,
+ *  called _elements_.  Any object may be an \Array element.
+ *
+ *  == \Array Indexes
+ *
+ *  \Array indexing starts at 0, as in C or Java.
+ *
+ *  A positive index is an offset from the first element:
+ *  - Index 0 indicates the first element.
+ *  - Index 1 indicates the second element.
+ *  - ...
+ *
+ *  A negative index is an offset, backwards, from the end of the array:
+ *  - Index -1 indicates the last element.
+ *  - Index -2 indicates the next-to-last element.
+ *  - ...
+ *
+ *  A non-negative index is <i>in range</i> if it is smaller than
+ *  the size of the array.  For a 3-element array:
+ *  - Indexes 0 through 2 are in range.
+ *  - Index 3 is out of range.
+ *
+ *  A negative index is <i>in range</i> if its absolute value is
+ *  not larger than the size of the array.  For a 3-element array:
+ *  - Indexes -1 through -3 are in range.
+ *  - Index -4 is out of range.
+ *
+ *  == Creating Arrays
+ *
+ *  A new array can be created by using the literal constructor
+ *  <code>[]</code>.  Arrays can contain different types of objects.  For
+ *  example, the array below contains an Integer, a String and a Float:
+ *
+ *     ary = [1, "two", 3.0] #=> [1, "two", 3.0]
+ *
+ *  An array can also be created by explicitly calling Array.new with zero, one
+ *  (the initial size of the Array) or two arguments (the initial size and a
+ *  default object).
+ *
+ *     ary = Array.new    #=> []
+ *     Array.new(3)       #=> [nil, nil, nil]
+ *     Array.new(3, true) #=> [true, true, true]
+ *
+ *  Note that the second argument populates the array with references to the
+ *  same object.  Therefore, it is only recommended in cases when you need to
+ *  instantiate arrays with natively immutable objects such as Symbols,
+ *  numbers, true or false.
+ *
+ *  To create an array with separate objects a block can be passed instead.
+ *  This method is safe to use with mutable objects such as hashes, strings or
+ *  other arrays:
+ *
+ *     Array.new(4) {Hash.new}    #=> [{}, {}, {}, {}]
+ *     Array.new(4) {|i| i.to_s } #=> ["0", "1", "2", "3"]
+ *
+ *  This is also a quick way to build up multi-dimensional arrays:
+ *
+ *     empty_table = Array.new(3) {Array.new(3)}
+ *     #=> [[nil, nil, nil], [nil, nil, nil], [nil, nil, nil]]
+ *
+ *  An array can also be created by using the Array() method, provided by
+ *  Kernel, which tries to call #to_ary, then #to_a on its argument.
+ *
+ *	Array({:a => "a", :b => "b"}) #=> [[:a, "a"], [:b, "b"]]
+ *
+ *  == Example Usage
+ *
+ *  In addition to the methods it mixes in through the Enumerable module, the
+ *  Array class has proprietary methods for accessing, searching and otherwise
+ *  manipulating arrays.
+ *
+ *  Some of the more common ones are illustrated below.
+ *
+ *  == Accessing Elements
+ *
+ *  Elements in an array can be retrieved using the Array#[] method.  It can
+ *  take a single integer argument (a numeric index), a pair of arguments
+ *  (start and length) or a range. Negative indices start counting from the end,
+ *  with -1 being the last element.
+ *
+ *     arr = [1, 2, 3, 4, 5, 6]
+ *     arr[2]    #=> 3
+ *     arr[100]  #=> nil
+ *     arr[-3]   #=> 4
+ *     arr[2, 3] #=> [3, 4, 5]
+ *     arr[1..4] #=> [2, 3, 4, 5]
+ *     arr[1..-3] #=> [2, 3, 4]
+ *
+ *  Another way to access a particular array element is by using the #at method
+ *
+ *     arr.at(0) #=> 1
+ *
+ *  The #slice method works in an identical manner to Array#[].
+ *
+ *  To raise an error for indices outside of the array bounds or else to
+ *  provide a default value when that happens, you can use #fetch.
+ *
+ *     arr = ['a', 'b', 'c', 'd', 'e', 'f']
+ *     arr.fetch(100) #=> IndexError: index 100 outside of array bounds: -6...6
+ *     arr.fetch(100, "oops") #=> "oops"
+ *
+ *  The special methods #first and #last will return the first and last
+ *  elements of an array, respectively.
+ *
+ *     arr.first #=> 1
+ *     arr.last  #=> 6
+ *
+ *  To return the first +n+ elements of an array, use #take
+ *
+ *     arr.take(3) #=> [1, 2, 3]
+ *
+ *  #drop does the opposite of #take, by returning the elements after +n+
+ *  elements have been dropped:
+ *
+ *     arr.drop(3) #=> [4, 5, 6]
+ *
+ *  == Obtaining Information about an Array
+ *
+ *  Arrays keep track of their own length at all times.  To query an array
+ *  about the number of elements it contains, use #length, #count or #size.
+ *
+ *    browsers = ['Chrome', 'Firefox', 'Safari', 'Opera', 'IE']
+ *    browsers.length #=> 5
+ *    browsers.count #=> 5
+ *
+ *  To check whether an array contains any elements at all
+ *
+ *    browsers.empty? #=> false
+ *
+ *  To check whether a particular item is included in the array
+ *
+ *    browsers.include?('Konqueror') #=> false
+ *
+ *  == Adding Items to Arrays
+ *
+ *  Items can be added to the end of an array by using either #push or #<<
+ *
+ *    arr = [1, 2, 3, 4]
+ *    arr.push(5) #=> [1, 2, 3, 4, 5]
+ *    arr << 6    #=> [1, 2, 3, 4, 5, 6]
+ *
+ *  #unshift will add a new item to the beginning of an array.
+ *
+ *     arr.unshift(0) #=> [0, 1, 2, 3, 4, 5, 6]
+ *
+ *  With #insert you can add a new element to an array at any position.
+ *
+ *     arr.insert(3, 'apple')  #=> [0, 1, 2, 'apple', 3, 4, 5, 6]
+ *
+ *  Using the #insert method, you can also insert multiple values at once:
+ *
+ *     arr.insert(3, 'orange', 'pear', 'grapefruit')
+ *     #=> [0, 1, 2, "orange", "pear", "grapefruit", "apple", 3, 4, 5, 6]
+ *
+ *  == Removing Items from an Array
+ *
+ *  The method #pop removes the last element in an array and returns it:
+ *
+ *     arr =  [1, 2, 3, 4, 5, 6]
+ *     arr.pop #=> 6
+ *     arr #=> [1, 2, 3, 4, 5]
+ *
+ *  To retrieve and at the same time remove the first item, use #shift:
+ *
+ *     arr.shift #=> 1
+ *     arr #=> [2, 3, 4, 5]
+ *
+ *  To delete an element at a particular index:
+ *
+ *     arr.delete_at(2) #=> 4
+ *     arr #=> [2, 3, 5]
+ *
+ *  To delete a particular element anywhere in an array, use #delete:
+ *
+ *     arr = [1, 2, 2, 3]
+ *     arr.delete(2) #=> 2
+ *     arr #=> [1,3]
+ *
+ *  A useful method if you need to remove +nil+ values from an array is
+ *  #compact:
+ *
+ *     arr = ['foo', 0, nil, 'bar', 7, 'baz', nil]
+ *     arr.compact  #=> ['foo', 0, 'bar', 7, 'baz']
+ *     arr          #=> ['foo', 0, nil, 'bar', 7, 'baz', nil]
+ *     arr.compact! #=> ['foo', 0, 'bar', 7, 'baz']
+ *     arr          #=> ['foo', 0, 'bar', 7, 'baz']
+ *
+ *  Another common need is to remove duplicate elements from an array.
+ *
+ *  It has the non-destructive #uniq, and destructive method #uniq!
+ *
+ *     arr = [2, 5, 6, 556, 6, 6, 8, 9, 0, 123, 556]
+ *     arr.uniq #=> [2, 5, 6, 556, 8, 9, 0, 123]
+ *
+ *  == Iterating over Arrays
+ *
+ *  Like all classes that include the Enumerable module, Array has an each
+ *  method, which defines what elements should be iterated over and how.  In
+ *  case of Array's #each, all elements in the Array instance are yielded to
+ *  the supplied block in sequence.
+ *
+ *  Note that this operation leaves the array unchanged.
+ *
+ *     arr = [1, 2, 3, 4, 5]
+ *     arr.each {|a| print a -= 10, " "}
+ *     # prints: -9 -8 -7 -6 -5
+ *     #=> [1, 2, 3, 4, 5]
+ *
+ *  Another sometimes useful iterator is #reverse_each which will iterate over
+ *  the elements in the array in reverse order.
+ *
+ *     words = %w[first second third fourth fifth sixth]
+ *     str = ""
+ *     words.reverse_each {|word| str += "#{word} "}
+ *     p str #=> "sixth fifth fourth third second first "
+ *
+ *  The #map method can be used to create a new array based on the original
+ *  array, but with the values modified by the supplied block:
+ *
+ *     arr.map {|a| 2*a}     #=> [2, 4, 6, 8, 10]
+ *     arr                   #=> [1, 2, 3, 4, 5]
+ *     arr.map! {|a| a**2}   #=> [1, 4, 9, 16, 25]
+ *     arr                   #=> [1, 4, 9, 16, 25]
+ *
+ *  == Selecting Items from an Array
+ *
+ *  Elements can be selected from an array according to criteria defined in a
+ *  block.  The selection can happen in a destructive or a non-destructive
+ *  manner.  While the destructive operations will modify the array they were
+ *  called on, the non-destructive methods usually return a new array with the
+ *  selected elements, but leave the original array unchanged.
+ *
+ *  === Non-destructive Selection
+ *
+ *     arr = [1, 2, 3, 4, 5, 6]
+ *     arr.select {|a| a > 3}       #=> [4, 5, 6]
+ *     arr.reject {|a| a < 3}       #=> [3, 4, 5, 6]
+ *     arr.drop_while {|a| a < 4}   #=> [4, 5, 6]
+ *     arr                          #=> [1, 2, 3, 4, 5, 6]
+ *
+ *  === Destructive Selection
+ *
+ *  #select! and #reject! are the corresponding destructive methods to #select
+ *  and #reject
+ *
+ *  Similar to #select vs. #reject, #delete_if and #keep_if have the exact
+ *  opposite result when supplied with the same block:
+ *
+ *     arr.delete_if {|a| a < 4}   #=> [4, 5, 6]
+ *     arr                         #=> [4, 5, 6]
+ *
+ *     arr = [1, 2, 3, 4, 5, 6]
+ *     arr.keep_if {|a| a < 4}   #=> [1, 2, 3]
+ *     arr                       #=> [1, 2, 3]
  */
 
 void
 Init_Array(void)
 {
-#undef rb_intern
-#define rb_intern(str) rb_intern_const(str)
-
     rb_cArray  = rb_define_class("Array", rb_cObject);
     rb_include_module(rb_cArray, rb_mEnumerable);
 
-    rb_define_alloc_func(rb_cArray, ary_alloc);
+    rb_define_alloc_func(rb_cArray, empty_ary_alloc);
     rb_define_singleton_method(rb_cArray, "[]", rb_ary_s_create, -1);
     rb_define_singleton_method(rb_cArray, "try_convert", rb_ary_s_try_convert, 1);
     rb_define_method(rb_cArray, "initialize", rb_ary_initialize, -1);
     rb_define_method(rb_cArray, "initialize_copy", rb_ary_replace, 1);
 
-    rb_define_method(rb_cArray, "to_s", rb_ary_inspect, 0);
     rb_define_method(rb_cArray, "inspect", rb_ary_inspect, 0);
+    rb_define_alias(rb_cArray,  "to_s", "inspect");
     rb_define_method(rb_cArray, "to_a", rb_ary_to_a, 0);
+    rb_define_method(rb_cArray, "to_h", rb_ary_to_h, 0);
     rb_define_method(rb_cArray, "to_ary", rb_ary_to_ary_m, 0);
-    rb_define_method(rb_cArray, "frozen?",  rb_ary_frozen_p, 0);
 
     rb_define_method(rb_cArray, "==", rb_ary_equal, 1);
     rb_define_method(rb_cArray, "eql?", rb_ary_eql, 1);
@@ -3809,18 +8106,23 @@ Init_Array(void)
     rb_define_method(rb_cArray, "fetch", rb_ary_fetch, -1);
     rb_define_method(rb_cArray, "first", rb_ary_first, -1);
     rb_define_method(rb_cArray, "last", rb_ary_last, -1);
-    rb_define_method(rb_cArray, "concat", rb_ary_concat, 1);
+    rb_define_method(rb_cArray, "concat", rb_ary_concat_multi, -1);
+    rb_define_method(rb_cArray, "union", rb_ary_union_multi, -1);
+    rb_define_method(rb_cArray, "difference", rb_ary_difference_multi, -1);
+    rb_define_method(rb_cArray, "intersection", rb_ary_intersection_multi, -1);
     rb_define_method(rb_cArray, "<<", rb_ary_push, 1);
     rb_define_method(rb_cArray, "push", rb_ary_push_m, -1);
+    rb_define_alias(rb_cArray,  "append", "push");
     rb_define_method(rb_cArray, "pop", rb_ary_pop_m, -1);
     rb_define_method(rb_cArray, "shift", rb_ary_shift_m, -1);
     rb_define_method(rb_cArray, "unshift", rb_ary_unshift_m, -1);
+    rb_define_alias(rb_cArray,  "prepend", "unshift");
     rb_define_method(rb_cArray, "insert", rb_ary_insert, -1);
     rb_define_method(rb_cArray, "each", rb_ary_each, 0);
     rb_define_method(rb_cArray, "each_index", rb_ary_each_index, 0);
     rb_define_method(rb_cArray, "reverse_each", rb_ary_reverse_each, 0);
     rb_define_method(rb_cArray, "length", rb_ary_length, 0);
-    rb_define_alias(rb_cArray,  "size", "length");
+    rb_define_method(rb_cArray, "size", rb_ary_length, 0);
     rb_define_method(rb_cArray, "empty?", rb_ary_empty_p, 0);
     rb_define_method(rb_cArray, "find_index", rb_ary_index, -1);
     rb_define_method(rb_cArray, "index", rb_ary_index, -1);
@@ -3828,13 +8130,20 @@ Init_Array(void)
     rb_define_method(rb_cArray, "join", rb_ary_join_m, -1);
     rb_define_method(rb_cArray, "reverse", rb_ary_reverse_m, 0);
     rb_define_method(rb_cArray, "reverse!", rb_ary_reverse_bang, 0);
+    rb_define_method(rb_cArray, "rotate", rb_ary_rotate_m, -1);
+    rb_define_method(rb_cArray, "rotate!", rb_ary_rotate_bang, -1);
     rb_define_method(rb_cArray, "sort", rb_ary_sort, 0);
     rb_define_method(rb_cArray, "sort!", rb_ary_sort_bang, 0);
+    rb_define_method(rb_cArray, "sort_by!", rb_ary_sort_by_bang, 0);
     rb_define_method(rb_cArray, "collect", rb_ary_collect, 0);
     rb_define_method(rb_cArray, "collect!", rb_ary_collect_bang, 0);
     rb_define_method(rb_cArray, "map", rb_ary_collect, 0);
     rb_define_method(rb_cArray, "map!", rb_ary_collect_bang, 0);
     rb_define_method(rb_cArray, "select", rb_ary_select, 0);
+    rb_define_method(rb_cArray, "select!", rb_ary_select_bang, 0);
+    rb_define_method(rb_cArray, "filter", rb_ary_select, 0);
+    rb_define_method(rb_cArray, "filter!", rb_ary_select_bang, 0);
+    rb_define_method(rb_cArray, "keep_if", rb_ary_keep_if, 0);
     rb_define_method(rb_cArray, "values_at", rb_ary_values_at, -1);
     rb_define_method(rb_cArray, "delete", rb_ary_delete, 1);
     rb_define_method(rb_cArray, "delete_at", rb_ary_delete_at_m, 1);
@@ -3862,6 +8171,10 @@ Init_Array(void)
     rb_define_method(rb_cArray, "&", rb_ary_and, 1);
     rb_define_method(rb_cArray, "|", rb_ary_or, 1);
 
+    rb_define_method(rb_cArray, "max", rb_ary_max, -1);
+    rb_define_method(rb_cArray, "min", rb_ary_min, -1);
+    rb_define_method(rb_cArray, "minmax", rb_ary_minmax, 0);
+
     rb_define_method(rb_cArray, "uniq", rb_ary_uniq, 0);
     rb_define_method(rb_cArray, "uniq!", rb_ary_uniq_bang, 0);
     rb_define_method(rb_cArray, "compact", rb_ary_compact, 0);
@@ -3869,18 +8182,27 @@ Init_Array(void)
     rb_define_method(rb_cArray, "flatten", rb_ary_flatten, -1);
     rb_define_method(rb_cArray, "flatten!", rb_ary_flatten_bang, -1);
     rb_define_method(rb_cArray, "count", rb_ary_count, -1);
-    rb_define_method(rb_cArray, "shuffle!", rb_ary_shuffle_bang, 0);
-    rb_define_method(rb_cArray, "shuffle", rb_ary_shuffle, 0);
-    rb_define_method(rb_cArray, "sample", rb_ary_sample, -1);
     rb_define_method(rb_cArray, "cycle", rb_ary_cycle, -1);
     rb_define_method(rb_cArray, "permutation", rb_ary_permutation, -1);
     rb_define_method(rb_cArray, "combination", rb_ary_combination, 1);
+    rb_define_method(rb_cArray, "repeated_permutation", rb_ary_repeated_permutation, 1);
+    rb_define_method(rb_cArray, "repeated_combination", rb_ary_repeated_combination, 1);
     rb_define_method(rb_cArray, "product", rb_ary_product, -1);
 
     rb_define_method(rb_cArray, "take", rb_ary_take, 1);
     rb_define_method(rb_cArray, "take_while", rb_ary_take_while, 0);
     rb_define_method(rb_cArray, "drop", rb_ary_drop, 1);
     rb_define_method(rb_cArray, "drop_while", rb_ary_drop_while, 0);
+    rb_define_method(rb_cArray, "bsearch", rb_ary_bsearch, 0);
+    rb_define_method(rb_cArray, "bsearch_index", rb_ary_bsearch_index, 0);
+    rb_define_method(rb_cArray, "any?", rb_ary_any_p, -1);
+    rb_define_method(rb_cArray, "all?", rb_ary_all_p, -1);
+    rb_define_method(rb_cArray, "none?", rb_ary_none_p, -1);
+    rb_define_method(rb_cArray, "one?", rb_ary_one_p, -1);
+    rb_define_method(rb_cArray, "dig", rb_ary_dig, -1);
+    rb_define_method(rb_cArray, "sum", rb_ary_sum, -1);
 
-    id_cmp = rb_intern("<=>");
+    rb_define_method(rb_cArray, "deconstruct", rb_ary_deconstruct, 0);
 }
+
+#include "array.rbinc"
diff --git a/array.rb b/array.rb
new file mode 100644
index 0000000000..a43a3b27b1
--- /dev/null
+++ b/array.rb
@@ -0,0 +1,61 @@
+class Array
+  # call-seq:
+  #    array.shuffle!(random: Random) -> array
+  #
+  # Shuffles the elements of +self+ in place.
+  #    a = [1, 2, 3] #=> [1, 2, 3]
+  #    a.shuffle!    #=> [2, 3, 1]
+  #    a             #=> [2, 3, 1]
+  #
+  # The optional +random+ argument will be used as the random number generator:
+  #    a.shuffle!(random: Random.new(1))  #=> [1, 3, 2]
+  def shuffle!(random: Random)
+    Primitive.rb_ary_shuffle_bang(random)
+  end
+
+  # call-seq:
+  #    array.shuffle(random: Random) -> new_ary
+  #
+  # Returns a new array with elements of +self+ shuffled.
+  #    a = [1, 2, 3] #=> [1, 2, 3]
+  #    a.shuffle     #=> [2, 3, 1]
+  #    a             #=> [1, 2, 3]
+  #
+  # The optional +random+ argument will be used as the random number generator:
+  #    a.shuffle(random: Random.new(1))  #=> [1, 3, 2]
+  def shuffle(random: Random)
+    Primitive.rb_ary_shuffle(random)
+  end
+
+  # call-seq:
+  #    array.sample(random: Random) -> object
+  #    array.sample(n, random: Random) -> new_ary
+  #
+  # Returns random elements from +self+.
+  #
+  # When no arguments are given, returns a random element from +self+:
+  #    a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+  #    a.sample # => 3
+  #    a.sample # => 8
+  # If +self+ is empty, returns +nil+.
+  #
+  # When argument +n+ is given, returns a new \Array containing +n+ random
+  # elements from +self+:
+  #    a.sample(3) # => [8, 9, 2]
+  #    a.sample(6) # => [9, 6, 10, 3, 1, 4]
+  # Returns no more than <tt>a.size</tt> elements
+  # (because no new duplicates are introduced):
+  #    a.sample(a.size * 2) # => [6, 4, 1, 8, 5, 9, 10, 2, 3, 7]
+  # But +self+ may contain duplicates:
+  #    a = [1, 1, 1, 2, 2, 3]
+  #    a.sample(a.size * 2) # => [1, 1, 3, 2, 1, 2]
+  # Returns a new empty \Array if +self+ is empty.
+  #
+  # The optional +random+ argument will be used as the random number generator:
+  #    a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+  #    a.sample(random: Random.new(1))     #=> 6
+  #    a.sample(4, random: Random.new(1))  #=> [6, 10, 9, 2]
+  def sample(n = (ary = false), random: Random)
+    Primitive.rb_ary_sample(random, n, ary)
+  end
+end
diff --git a/ast.c b/ast.c
new file mode 100644
index 0000000000..2af0b3e530
--- /dev/null
+++ b/ast.c
@@ -0,0 +1,699 @@
+/* indent-tabs-mode: nil */
+#include "internal.h"
+#include "internal/parse.h"
+#include "internal/symbol.h"
+#include "internal/warnings.h"
+#include "iseq.h"
+#include "node.h"
+#include "ruby.h"
+#include "ruby/encoding.h"
+#include "ruby/util.h"
+#include "vm_core.h"
+
+#include "builtin.h"
+
+static VALUE rb_mAST;
+static VALUE rb_cNode;
+
+struct ASTNodeData {
+    rb_ast_t *ast;
+    const NODE *node;
+};
+
+static void
+node_gc_mark(void *ptr)
+{
+    struct ASTNodeData *data = (struct ASTNodeData *)ptr;
+    rb_gc_mark((VALUE)data->ast);
+}
+
+static size_t
+node_memsize(const void *ptr)
+{
+    struct ASTNodeData *data = (struct ASTNodeData *)ptr;
+    return rb_ast_memsize(data->ast);
+}
+
+static const rb_data_type_t rb_node_type = {
+    "AST/node",
+    {node_gc_mark, RUBY_TYPED_DEFAULT_FREE, node_memsize,},
+    0, 0,
+    RUBY_TYPED_FREE_IMMEDIATELY,
+};
+
+static VALUE rb_ast_node_alloc(VALUE klass);
+
+static void
+setup_node(VALUE obj, rb_ast_t *ast, const NODE *node)
+{
+    struct ASTNodeData *data;
+
+    TypedData_Get_Struct(obj, struct ASTNodeData, &rb_node_type, data);
+    data->ast = ast;
+    data->node = node;
+}
+
+static VALUE
+ast_new_internal(rb_ast_t *ast, const NODE *node)
+{
+    VALUE obj;
+
+    obj = rb_ast_node_alloc(rb_cNode);
+    setup_node(obj, ast, node);
+
+    return obj;
+}
+
+static VALUE rb_ast_parse_str(VALUE str);
+static VALUE rb_ast_parse_file(VALUE path);
+static VALUE rb_ast_parse_array(VALUE array);
+
+static VALUE
+ast_parse_new(void)
+{
+    return rb_parser_set_context(rb_parser_new(), NULL, 0);
+}
+
+static VALUE
+ast_parse_done(rb_ast_t *ast)
+{
+    if (!ast->body.root) {
+        rb_ast_dispose(ast);
+        rb_exc_raise(GET_EC()->errinfo);
+    }
+
+    return ast_new_internal(ast, (NODE *)ast->body.root);
+}
+
+static VALUE
+ast_s_parse(rb_execution_context_t *ec, VALUE module, VALUE str)
+{
+    return rb_ast_parse_str(str);
+}
+
+static VALUE
+rb_ast_parse_str(VALUE str)
+{
+    rb_ast_t *ast = 0;
+
+    StringValue(str);
+    ast = rb_parser_compile_string_path(ast_parse_new(), Qnil, str, 1);
+    return ast_parse_done(ast);
+}
+
+static VALUE
+ast_s_parse_file(rb_execution_context_t *ec, VALUE module, VALUE path)
+{
+    return rb_ast_parse_file(path);
+}
+
+static VALUE
+rb_ast_parse_file(VALUE path)
+{
+    VALUE f;
+    rb_ast_t *ast = 0;
+    rb_encoding *enc = rb_utf8_encoding();
+
+    FilePathValue(path);
+    f = rb_file_open_str(path, "r");
+    rb_funcall(f, rb_intern("set_encoding"), 2, rb_enc_from_encoding(enc), rb_str_new_cstr("-"));
+    ast = rb_parser_compile_file_path(ast_parse_new(), Qnil, f, 1);
+    rb_io_close(f);
+    return ast_parse_done(ast);
+}
+
+static VALUE
+lex_array(VALUE array, int index)
+{
+    VALUE str = rb_ary_entry(array, index);
+    if (!NIL_P(str)) {
+        StringValue(str);
+        if (!rb_enc_asciicompat(rb_enc_get(str))) {
+            rb_raise(rb_eArgError, "invalid source encoding");
+        }
+    }
+    return str;
+}
+
+static VALUE
+rb_ast_parse_array(VALUE array)
+{
+    rb_ast_t *ast = 0;
+
+    array = rb_check_array_type(array);
+    ast = rb_parser_compile_generic(ast_parse_new(), lex_array, Qnil, array, 1);
+    return ast_parse_done(ast);
+}
+
+static VALUE node_children(rb_ast_t*, const NODE*);
+
+static VALUE
+node_find(VALUE self, const int node_id)
+{
+    VALUE ary;
+    long i;
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    if (nd_node_id(data->node) == node_id) return self;
+
+    ary = node_children(data->ast, data->node);
+
+    for (i = 0; i < RARRAY_LEN(ary); i++) {
+        VALUE child = RARRAY_AREF(ary, i);
+
+        if (CLASS_OF(child) == rb_cNode) {
+            VALUE result = node_find(child, node_id);
+            if (RTEST(result)) return result;
+        }
+    }
+
+    return Qnil;
+}
+
+extern VALUE rb_e_script;
+
+static VALUE
+script_lines(VALUE path)
+{
+    VALUE hash, lines;
+    ID script_lines;
+    CONST_ID(script_lines, "SCRIPT_LINES__");
+    if (!rb_const_defined_at(rb_cObject, script_lines)) return Qnil;
+    hash = rb_const_get_at(rb_cObject, script_lines);
+    if (!RB_TYPE_P(hash, T_HASH)) return Qnil;
+    lines = rb_hash_lookup(hash, path);
+    if (!RB_TYPE_P(lines, T_ARRAY)) return Qnil;
+    return lines;
+}
+
+static VALUE
+ast_s_of(rb_execution_context_t *ec, VALUE module, VALUE body)
+{
+    VALUE path, node, lines;
+    int node_id;
+    const rb_iseq_t *iseq = NULL;
+
+    if (rb_obj_is_proc(body)) {
+        iseq = vm_proc_iseq(body);
+
+        if (!rb_obj_is_iseq((VALUE)iseq)) {
+            iseq = NULL;
+        }
+    }
+    else {
+        iseq = rb_method_iseq(body);
+    }
+
+    if (!iseq) return Qnil;
+
+    path = rb_iseq_path(iseq);
+    node_id = iseq->body->location.node_id;
+    if (!NIL_P(lines = script_lines(path))) {
+        node = rb_ast_parse_array(lines);
+    }
+    else if (RSTRING_LEN(path) == 2 && memcmp(RSTRING_PTR(path), "-e", 2) == 0) {
+        node = rb_ast_parse_str(rb_e_script);
+    }
+    else {
+        node = rb_ast_parse_file(path);
+    }
+
+    return node_find(node, node_id);
+}
+
+static VALUE
+rb_ast_node_alloc(VALUE klass)
+{
+    struct ASTNodeData *data;
+    VALUE obj = TypedData_Make_Struct(klass, struct ASTNodeData, &rb_node_type, data);
+
+    return obj;
+}
+
+static const char*
+node_type_to_str(const NODE *node)
+{
+    return (ruby_node_name(nd_type(node)) + rb_strlen_lit("NODE_"));
+}
+
+static VALUE
+ast_node_type(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    return rb_sym_intern_ascii_cstr(node_type_to_str(data->node));
+}
+
+#define NEW_CHILD(ast, node) node ? ast_new_internal(ast, node) : Qnil
+
+static VALUE
+rb_ary_new_from_node_args(rb_ast_t *ast, long n, ...)
+{
+    va_list ar;
+    VALUE ary;
+    long i;
+
+    ary = rb_ary_new2(n);
+
+    va_start(ar, n);
+    for (i=0; i<n; i++) {
+        NODE *node;
+        node = va_arg(ar, NODE *);
+        rb_ary_push(ary, NEW_CHILD(ast, node));
+    }
+    va_end(ar);
+    return ary;
+}
+
+static VALUE
+dump_block(rb_ast_t *ast, const NODE *node)
+{
+    VALUE ary = rb_ary_new();
+    do {
+        rb_ary_push(ary, NEW_CHILD(ast, node->nd_head));
+    } while (node->nd_next &&
+        nd_type(node->nd_next) == NODE_BLOCK &&
+        (node = node->nd_next, 1));
+    if (node->nd_next) {
+        rb_ary_push(ary, NEW_CHILD(ast, node->nd_next));
+    }
+
+    return ary;
+}
+
+static VALUE
+dump_array(rb_ast_t *ast, const NODE *node)
+{
+    VALUE ary = rb_ary_new();
+    rb_ary_push(ary, NEW_CHILD(ast, node->nd_head));
+
+    while (node->nd_next && nd_type(node->nd_next) == NODE_LIST) {
+        node = node->nd_next;
+        rb_ary_push(ary, NEW_CHILD(ast, node->nd_head));
+    }
+    rb_ary_push(ary, NEW_CHILD(ast, node->nd_next));
+
+    return ary;
+}
+
+static VALUE
+var_name(ID id)
+{
+    if (!id) return Qnil;
+    if (!rb_id2str(id)) return Qnil;
+    return ID2SYM(id);
+}
+
+static VALUE
+no_name_rest(void)
+{
+    ID rest;
+    CONST_ID(rest, "NODE_SPECIAL_NO_NAME_REST");
+    return ID2SYM(rest);
+}
+
+static VALUE
+rest_arg(rb_ast_t *ast, const NODE *rest_arg)
+{
+    return NODE_NAMED_REST_P(rest_arg) ? NEW_CHILD(ast, rest_arg) : no_name_rest();
+}
+
+static VALUE
+node_children(rb_ast_t *ast, const NODE *node)
+{
+    char name[DECIMAL_SIZE_OF_BITS(sizeof(long) * CHAR_BIT) + 2]; /* including '$' */
+
+    enum node_type type = nd_type(node);
+    switch (type) {
+      case NODE_BLOCK:
+        return dump_block(ast, node);
+      case NODE_IF:
+        return rb_ary_new_from_node_args(ast, 3, node->nd_cond, node->nd_body, node->nd_else);
+      case NODE_UNLESS:
+        return rb_ary_new_from_node_args(ast, 3, node->nd_cond, node->nd_body, node->nd_else);
+      case NODE_CASE:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+      case NODE_CASE2:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+      case NODE_CASE3:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+      case NODE_WHEN:
+        return rb_ary_new_from_node_args(ast, 3, node->nd_head, node->nd_body, node->nd_next);
+      case NODE_IN:
+        return rb_ary_new_from_node_args(ast, 3, node->nd_head, node->nd_body, node->nd_next);
+      case NODE_WHILE:
+      case NODE_UNTIL:
+        return rb_ary_push(rb_ary_new_from_node_args(ast, 2, node->nd_cond, node->nd_body),
+                           (node->nd_state ? Qtrue : Qfalse));
+      case NODE_ITER:
+      case NODE_FOR:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_iter, node->nd_body);
+      case NODE_FOR_MASGN:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_var);
+      case NODE_BREAK:
+      case NODE_NEXT:
+      case NODE_RETURN:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_stts);
+      case NODE_REDO:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_RETRY:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_BEGIN:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+      case NODE_RESCUE:
+        return rb_ary_new_from_node_args(ast, 3, node->nd_head, node->nd_resq, node->nd_else);
+      case NODE_RESBODY:
+        return rb_ary_new_from_node_args(ast, 3, node->nd_args, node->nd_body, node->nd_head);
+      case NODE_ENSURE:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_ensr);
+      case NODE_AND:
+      case NODE_OR:
+        {
+            VALUE ary = rb_ary_new();
+
+            while (1) {
+                rb_ary_push(ary, NEW_CHILD(ast, node->nd_1st));
+                if (!node->nd_2nd || nd_type(node->nd_2nd) != (int)type)
+                    break;
+                node = node->nd_2nd;
+            }
+            rb_ary_push(ary, NEW_CHILD(ast, node->nd_2nd));
+            return ary;
+        }
+      case NODE_MASGN:
+        if (NODE_NAMED_REST_P(node->nd_args)) {
+            return rb_ary_new_from_node_args(ast, 3, node->nd_value, node->nd_head, node->nd_args);
+        }
+        else {
+            return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_value),
+                                        NEW_CHILD(ast, node->nd_head),
+                                        no_name_rest());
+        }
+      case NODE_LASGN:
+      case NODE_DASGN:
+      case NODE_DASGN_CURR:
+      case NODE_IASGN:
+      case NODE_CVASGN:
+      case NODE_GASGN:
+        if (NODE_REQUIRED_KEYWORD_P(node)) {
+            return rb_ary_new_from_args(2, var_name(node->nd_vid), ID2SYM(rb_intern("NODE_SPECIAL_REQUIRED_KEYWORD")));
+        }
+        return rb_ary_new_from_args(2, var_name(node->nd_vid), NEW_CHILD(ast, node->nd_value));
+      case NODE_CDECL:
+        if (node->nd_vid) {
+            return rb_ary_new_from_args(2, ID2SYM(node->nd_vid), NEW_CHILD(ast, node->nd_value));
+        }
+        return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_else), ID2SYM(node->nd_else->nd_mid), NEW_CHILD(ast, node->nd_value));
+      case NODE_OP_ASGN1:
+        return rb_ary_new_from_args(4, NEW_CHILD(ast, node->nd_recv),
+                                    ID2SYM(node->nd_mid),
+                                    NEW_CHILD(ast, node->nd_args->nd_head),
+                                    NEW_CHILD(ast, node->nd_args->nd_body));
+      case NODE_OP_ASGN2:
+        return rb_ary_new_from_args(5, NEW_CHILD(ast, node->nd_recv),
+                                    node->nd_next->nd_aid ? Qtrue : Qfalse,
+                                    ID2SYM(node->nd_next->nd_vid),
+                                    ID2SYM(node->nd_next->nd_mid),
+                                    NEW_CHILD(ast, node->nd_value));
+      case NODE_OP_ASGN_AND:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_head), ID2SYM(idANDOP),
+                                    NEW_CHILD(ast, node->nd_value));
+      case NODE_OP_ASGN_OR:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_head), ID2SYM(idOROP),
+                                    NEW_CHILD(ast, node->nd_value));
+      case NODE_OP_CDECL:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_head),
+                                    ID2SYM(node->nd_aid),
+                                    NEW_CHILD(ast, node->nd_value));
+      case NODE_CALL:
+      case NODE_OPCALL:
+      case NODE_QCALL:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_recv),
+                                    ID2SYM(node->nd_mid),
+                                    NEW_CHILD(ast, node->nd_args));
+      case NODE_FCALL:
+        return rb_ary_new_from_args(2, ID2SYM(node->nd_mid),
+                                    NEW_CHILD(ast, node->nd_args));
+      case NODE_VCALL:
+        return rb_ary_new_from_args(1, ID2SYM(node->nd_mid));
+      case NODE_SUPER:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_args);
+      case NODE_ZSUPER:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_LIST:
+      case NODE_VALUES:
+        return dump_array(ast, node);
+      case NODE_ZLIST:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_HASH:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+      case NODE_YIELD:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+      case NODE_LVAR:
+      case NODE_DVAR:
+        return rb_ary_new_from_args(1, var_name(node->nd_vid));
+      case NODE_IVAR:
+      case NODE_CONST:
+      case NODE_CVAR:
+      case NODE_GVAR:
+        return rb_ary_new_from_args(1, ID2SYM(node->nd_vid));
+      case NODE_NTH_REF:
+        snprintf(name, sizeof(name), "$%ld", node->nd_nth);
+        return rb_ary_new_from_args(1, ID2SYM(rb_intern(name)));
+      case NODE_BACK_REF:
+        name[0] = '$';
+        name[1] = (char)node->nd_nth;
+        name[2] = '\0';
+        return rb_ary_new_from_args(1, ID2SYM(rb_intern(name)));
+      case NODE_MATCH2:
+        if (node->nd_args) {
+            return rb_ary_new_from_node_args(ast, 3, node->nd_recv, node->nd_value, node->nd_args);
+        }
+        return rb_ary_new_from_node_args(ast, 2, node->nd_recv, node->nd_value);
+      case NODE_MATCH3:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_recv, node->nd_value);
+      case NODE_MATCH:
+      case NODE_LIT:
+      case NODE_STR:
+      case NODE_XSTR:
+        return rb_ary_new_from_args(1, node->nd_lit);
+      case NODE_ONCE:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+      case NODE_DSTR:
+      case NODE_DXSTR:
+      case NODE_DREGX:
+      case NODE_DSYM:
+        {
+            NODE *n = node->nd_next;
+            VALUE head = Qnil, next = Qnil;
+            if (n) {
+                head = NEW_CHILD(ast, n->nd_head);
+                next = NEW_CHILD(ast, n->nd_next);
+            }
+            return rb_ary_new_from_args(3, node->nd_lit, head, next);
+        }
+      case NODE_EVSTR:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+      case NODE_ARGSCAT:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+      case NODE_ARGSPUSH:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+      case NODE_SPLAT:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+      case NODE_BLOCK_PASS:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+      case NODE_DEFN:
+        return rb_ary_new_from_args(2, ID2SYM(node->nd_mid), NEW_CHILD(ast, node->nd_defn));
+      case NODE_DEFS:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_recv), ID2SYM(node->nd_mid), NEW_CHILD(ast, node->nd_defn));
+      case NODE_ALIAS:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_1st, node->nd_2nd);
+      case NODE_VALIAS:
+        return rb_ary_new_from_args(2, ID2SYM(node->nd_alias), ID2SYM(node->nd_orig));
+      case NODE_UNDEF:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_undef);
+      case NODE_CLASS:
+        return rb_ary_new_from_node_args(ast, 3, node->nd_cpath, node->nd_super, node->nd_body);
+      case NODE_MODULE:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_cpath, node->nd_body);
+      case NODE_SCLASS:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_recv, node->nd_body);
+      case NODE_COLON2:
+        return rb_ary_new_from_args(2, NEW_CHILD(ast, node->nd_head), ID2SYM(node->nd_mid));
+      case NODE_COLON3:
+        return rb_ary_new_from_args(1, ID2SYM(node->nd_mid));
+      case NODE_DOT2:
+      case NODE_DOT3:
+      case NODE_FLIP2:
+      case NODE_FLIP3:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_beg, node->nd_end);
+      case NODE_SELF:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_NIL:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_TRUE:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_FALSE:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_ERRINFO:
+        return rb_ary_new_from_node_args(ast, 0);
+      case NODE_DEFINED:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+      case NODE_POSTEXE:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+      case NODE_ATTRASGN:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_recv), ID2SYM(node->nd_mid), NEW_CHILD(ast, node->nd_args));
+      case NODE_LAMBDA:
+        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+      case NODE_OPT_ARG:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_body, node->nd_next);
+      case NODE_KW_ARG:
+        return rb_ary_new_from_node_args(ast, 2, node->nd_body, node->nd_next);
+      case NODE_POSTARG:
+        if (NODE_NAMED_REST_P(node->nd_1st)) {
+            return rb_ary_new_from_node_args(ast, 2, node->nd_1st, node->nd_2nd);
+        }
+        return rb_ary_new_from_args(2, no_name_rest(),
+                                    NEW_CHILD(ast, node->nd_2nd));
+      case NODE_ARGS:
+        {
+            struct rb_args_info *ainfo = node->nd_ainfo;
+            return rb_ary_new_from_args(10,
+                                        INT2NUM(ainfo->pre_args_num),
+                                        NEW_CHILD(ast, ainfo->pre_init),
+                                        NEW_CHILD(ast, ainfo->opt_args),
+                                        var_name(ainfo->first_post_arg),
+                                        INT2NUM(ainfo->post_args_num),
+                                        NEW_CHILD(ast, ainfo->post_init),
+                                        (ainfo->rest_arg == NODE_SPECIAL_EXCESSIVE_COMMA
+                                            ? ID2SYM(rb_intern("NODE_SPECIAL_EXCESSIVE_COMMA"))
+                                            : var_name(ainfo->rest_arg)),
+                                        (ainfo->no_kwarg ? Qfalse : NEW_CHILD(ast, ainfo->kw_args)),
+                                        (ainfo->no_kwarg ? Qfalse : NEW_CHILD(ast, ainfo->kw_rest_arg)),
+                                        var_name(ainfo->block_arg));
+        }
+      case NODE_SCOPE:
+        {
+            ID *tbl = node->nd_tbl;
+            int i, size = tbl ? (int)*tbl++ : 0;
+            VALUE locals = rb_ary_new_capa(size);
+            for (i = 0; i < size; i++) {
+                rb_ary_push(locals, var_name(tbl[i]));
+            }
+            return rb_ary_new_from_args(3, locals, NEW_CHILD(ast, node->nd_args), NEW_CHILD(ast, node->nd_body));
+        }
+      case NODE_ARYPTN:
+        {
+            struct rb_ary_pattern_info *apinfo = node->nd_apinfo;
+            VALUE rest = rest_arg(ast, apinfo->rest_arg);
+            return rb_ary_new_from_args(4,
+                                        NEW_CHILD(ast, node->nd_pconst),
+                                        NEW_CHILD(ast, apinfo->pre_args),
+                                        rest,
+                                        NEW_CHILD(ast, apinfo->post_args));
+        }
+      case NODE_FNDPTN:
+        {
+            struct rb_fnd_pattern_info *fpinfo = node->nd_fpinfo;
+            VALUE pre_rest = rest_arg(ast, fpinfo->pre_rest_arg);
+            VALUE post_rest = rest_arg(ast, fpinfo->post_rest_arg);
+            return rb_ary_new_from_args(4,
+                                        NEW_CHILD(ast, node->nd_pconst),
+                                        pre_rest,
+                                        NEW_CHILD(ast, fpinfo->args),
+                                        post_rest);
+        }
+      case NODE_HSHPTN:
+        {
+            VALUE kwrest = node->nd_pkwrestarg == NODE_SPECIAL_NO_REST_KEYWORD ? ID2SYM(rb_intern("NODE_SPECIAL_NO_REST_KEYWORD")) :
+                                                                                 NEW_CHILD(ast, node->nd_pkwrestarg);
+
+            return rb_ary_new_from_args(3,
+                                        NEW_CHILD(ast, node->nd_pconst),
+                                        NEW_CHILD(ast, node->nd_pkwargs),
+                                        kwrest);
+        }
+      case NODE_ARGS_AUX:
+      case NODE_LAST:
+        break;
+    }
+
+    rb_bug("node_children: unknown node: %s", ruby_node_name(type));
+}
+
+static VALUE
+ast_node_children(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    return node_children(data->ast, data->node);
+}
+
+static VALUE
+ast_node_first_lineno(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    return INT2NUM(nd_first_lineno(data->node));
+}
+
+static VALUE
+ast_node_first_column(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    return INT2NUM(nd_first_column(data->node));
+}
+
+static VALUE
+ast_node_last_lineno(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    return INT2NUM(nd_last_lineno(data->node));
+}
+
+static VALUE
+ast_node_last_column(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    return INT2NUM(nd_last_column(data->node));
+}
+
+static VALUE
+ast_node_inspect(rb_execution_context_t *ec, VALUE self)
+{
+    VALUE str;
+    VALUE cname;
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    cname = rb_class_path(rb_obj_class(self));
+    str = rb_str_new2("#<");
+
+    rb_str_append(str, cname);
+    rb_str_catf(str, ":%s@%d:%d-%d:%d>",
+                node_type_to_str(data->node),
+                nd_first_lineno(data->node), nd_first_column(data->node),
+                nd_last_lineno(data->node), nd_last_column(data->node));
+
+    return str;
+}
+
+#include "ast.rbinc"
+
+void
+Init_ast(void)
+{
+    rb_mAST = rb_define_module_under(rb_cRubyVM, "AbstractSyntaxTree");
+    rb_cNode = rb_define_class_under(rb_mAST, "Node", rb_cObject);
+    rb_undef_alloc_func(rb_cNode);
+}
diff --git a/ast.rb b/ast.rb
new file mode 100644
index 0000000000..34fa645671
--- /dev/null
+++ b/ast.rb
@@ -0,0 +1,146 @@
+# for ast.c
+
+class RubyVM
+
+  # AbstractSyntaxTree provides methods to parse Ruby code into
+  # abstract syntax trees. The nodes in the tree
+  # are instances of RubyVM::AbstractSyntaxTree::Node.
+  #
+  # This module is MRI specific as it exposes implementation details
+  # of the MRI abstract syntax tree.
+  #
+  # This module is experimental and its API is not stable, therefore it might
+  # change without notice. As examples, the order of children nodes is not
+  # guaranteed, the number of children nodes might change, there is no way to
+  # access children nodes by name, etc.
+  #
+  # If you are looking for a stable API or an API working under multiple Ruby
+  # implementations, consider using the _parser_ gem or Ripper. If you would
+  # like to make RubyVM::AbstractSyntaxTree stable, please join the discussion
+  # at https://bugs.ruby-lang.org/issues/14844.
+  #
+  module AbstractSyntaxTree
+
+    #  call-seq:
+    #     RubyVM::AbstractSyntaxTree.parse(string) -> RubyVM::AbstractSyntaxTree::Node
+    #
+    #  Parses the given _string_ into an abstract syntax tree,
+    #  returning the root node of that tree.
+    #
+    #  SyntaxError is raised if the given _string_ is invalid syntax.
+    #
+    #    RubyVM::AbstractSyntaxTree.parse("x = 1 + 2")
+    #    # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:0-1:9>
+    def self.parse string
+      Primitive.ast_s_parse string
+    end
+
+    #  call-seq:
+    #     RubyVM::AbstractSyntaxTree.parse_file(pathname) -> RubyVM::AbstractSyntaxTree::Node
+    #
+    #   Reads the file from _pathname_, then parses it like ::parse,
+    #   returning the root node of the abstract syntax tree.
+    #
+    #   SyntaxError is raised if _pathname_'s contents are not
+    #   valid Ruby syntax.
+    #
+    #     RubyVM::AbstractSyntaxTree.parse_file("my-app/app.rb")
+    #     # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:0-31:3>
+    def self.parse_file pathname
+      Primitive.ast_s_parse_file pathname
+    end
+
+    #  call-seq:
+    #     RubyVM::AbstractSyntaxTree.of(proc)   -> RubyVM::AbstractSyntaxTree::Node
+    #     RubyVM::AbstractSyntaxTree.of(method) -> RubyVM::AbstractSyntaxTree::Node
+    #
+    #   Returns AST nodes of the given _proc_ or _method_.
+    #
+    #     RubyVM::AbstractSyntaxTree.of(proc {1 + 2})
+    #     # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:35-1:42>
+    #
+    #     def hello
+    #       puts "hello, world"
+    #     end
+    #
+    #     RubyVM::AbstractSyntaxTree.of(method(:hello))
+    #     # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:0-3:3>
+    def self.of body
+      Primitive.ast_s_of body
+    end
+
+    # RubyVM::AbstractSyntaxTree::Node instances are created by parse methods in
+    # RubyVM::AbstractSyntaxTree.
+    #
+    # This class is MRI specific.
+    #
+    class Node
+
+      #  call-seq:
+      #     node.type -> symbol
+      #
+      #  Returns the type of this node as a symbol.
+      #
+      #    root = RubyVM::AbstractSyntaxTree.parse("x = 1 + 2")
+      #    root.type # => :SCOPE
+      #    lasgn = root.children[2]
+      #    lasgn.type # => :LASGN
+      #    call = lasgn.children[1]
+      #    call.type # => :OPCALL
+      def type
+        Primitive.ast_node_type
+      end
+
+      #  call-seq:
+      #     node.first_lineno -> integer
+      #
+      #  The line number in the source code where this AST's text began.
+      def first_lineno
+        Primitive.ast_node_first_lineno
+      end
+
+      #  call-seq:
+      #     node.first_column -> integer
+      #
+      #  The column number in the source code where this AST's text began.
+      def first_column
+        Primitive.ast_node_first_column
+      end
+
+      #  call-seq:
+      #     node.last_lineno -> integer
+      #
+      #  The line number in the source code where this AST's text ended.
+      def last_lineno
+        Primitive.ast_node_last_lineno
+      end
+
+      #  call-seq:
+      #     node.last_column -> integer
+      #
+      #  The column number in the source code where this AST's text ended.
+      def last_column
+        Primitive.ast_node_last_column
+      end
+
+      #  call-seq:
+      #     node.children -> array
+      #
+      #  Returns AST nodes under this one.  Each kind of node
+      #  has different children, depending on what kind of node it is.
+      #
+      #  The returned array may contain other nodes or <code>nil</code>.
+      def children
+        Primitive.ast_node_children
+      end
+
+      #  call-seq:
+      #     node.inspect -> string
+      #
+      #  Returns debugging information about this node as a string.
+      def inspect
+        Primitive.ast_node_inspect
+      end
+    end
+  end
+end
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000000..44a1922cb0
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+PWD=
+case "$0" in
+*/*) srcdir=`dirname $0`;;
+*) srcdir="";;
+esac
+
+exec ${AUTORECONF:-autoreconf} --install --symlink "$@" ${srcdir:+"$srcdir"}
diff --git a/basictest/runner.rb b/basictest/runner.rb
new file mode 100755
index 0000000000..0f398e7acc
--- /dev/null
+++ b/basictest/runner.rb
@@ -0,0 +1,33 @@
+#! ./miniruby
+
+exit if defined?(CROSS_COMPILING) and CROSS_COMPILING
+ruby = ENV["RUBY"]
+unless ruby
+  load './rbconfig.rb'
+  ruby = "./#{RbConfig::CONFIG['ruby_install_name']}#{RbConfig::CONFIG['EXEEXT']}"
+end
+unless File.exist? ruby
+  print "#{ruby} is not found.\n"
+  print "Try `make' first, then `make test', please.\n"
+  exit false
+end
+ARGV[0] and opt = ARGV[0][/\A--run-opt=(.*)/, 1] and ARGV.shift
+
+$stderr.reopen($stdout)
+error = ''
+
+srcdir = File.expand_path('..', File.dirname(__FILE__))
+if env = ENV["RUBYOPT"]
+  ENV["RUBYOPT"] = env + " -W1"
+end
+`#{ruby} #{opt} -W1 #{srcdir}/basictest/test.rb #{ARGV.join(' ')}`.each_line do |line|
+  if line =~ /^end of test/
+    print "\ntest succeeded\n"
+    exit true
+  end
+  error << line if %r:^(basictest/test.rb|not): =~ line
+end
+puts
+print error
+print "test failed\n"
+exit false
diff --git a/basictest/test.rb b/basictest/test.rb
new file mode 100755
index 0000000000..52008b78db
--- /dev/null
+++ b/basictest/test.rb
@@ -0,0 +1,2364 @@
+#! /usr/bin/env ruby
+# -*- coding: us-ascii -*-
+
+$testnum=0
+$ntest=0
+$failed = 0
+class Progress
+  def initialize
+    @color = nil
+    @tty = nil
+    @quiet = nil
+    @verbose = nil
+    ARGV.each do |arg|
+      case arg
+      when /\A--color(?:=(?:always|(auto)|(never)|(.*)))?\z/
+        warn "unknown --color argument: #$3" if $3
+        @color = $1 ? nil : !$2
+      when /\A--tty(=(?:yes|(no)|(.*)))?\z/
+        warn "unknown --tty argument: #$3" if $3
+        @tty = !$1 || !$2
+        true
+      when /\A-(q|-quiet)\z/
+        @quiet = true
+      when /\A-(v|-verbose)\z/
+        @verbose = true
+      end
+    end
+    @tty = STDERR.tty? && !STDOUT.tty? && /dumb/ !~ ENV["TERM"] if @tty.nil?
+    @eol = @tty && !@verbose ? "\r\e[K\r" : "\n"
+    case @color
+    when nil
+      @color = @tty
+    end
+    if @color
+      # dircolors-like style
+      colors = (colors = ENV['TEST_COLORS']) ? Hash[colors.scan(/(\w+)=([^:\n]*)/)] : {}
+      begin
+        File.read(File.join(__dir__, "../tool/colors")).scan(/(\w+)=([^:\n]*)/) do |n, c|
+          colors[n] ||= c
+        end
+      rescue
+      end
+      @passed = "\e[;#{colors["pass"] || "32"}m"
+      @failed = "\e[;#{colors["fail"] || "31"}m"
+      @reset = "\e[m"
+    else
+      @passed = @failed = @reset = ""
+    end
+    extend(Rotator) if @tty
+  end
+
+  def passed_string
+    "."
+  end
+  def failed_string
+    "#{@failed}F#{@reset}"
+  end
+  def init_string
+  end
+  def finish_string
+    if @quiet
+      @eol
+    else
+      "#{@passed}#{@ok ? 'OK' : ''} #{$testnum}#{@reset}#{@eol}"
+    end
+  end
+  def pass
+    STDERR.print passed_string
+  end
+  def fail
+    @ok = false
+    STDERR.print failed_string
+  end
+  def init
+    @ok = true
+    STDERR.print init_string
+  end
+  def finish
+    STDERR.print finish_string
+  end
+
+  module Rotator
+    ROTATOR = %w[- \\ | /]
+    BS = "\b" * ROTATOR[0].size
+    def passed_string
+      "#{BS}#{ROTATOR[(@count += 1) % ROTATOR.size]}"
+    end
+    def failed_string
+      "#{BS}#{super}#{ROTATOR[@count % ROTATOR.size]}"
+    end
+    def init_string
+      @count = 0
+      " "
+    end
+    def finish_string
+      s = "#{BS}#{' ' * BS.size}#{BS}#{super}"
+      s.gsub!(/\n/, "\r\e[2K\r") if @quiet
+      s
+    end
+  end
+end
+PROGRESS = Progress.new
+
+def test_check(what)
+  unless $ntest.zero?
+    PROGRESS.finish
+  end
+  STDERR.print "#{$0}:#{what} "
+  PROGRESS.init
+  $what = what
+  $testnum = 0
+end
+
+def test_ok(cond,n=1)
+  $testnum+=1
+  $ntest+=1
+  where = (st = caller(n)) ? st[0] : "caller error! (n=#{n}, trace=#{caller(0).join(', ')}"
+  if cond
+    PROGRESS.pass
+    printf "ok %d (%s)\n", $testnum, where
+  else
+    PROGRESS.fail
+    printf "not ok %s %d -- %s\n", $what, $testnum, where
+    $failed+=1
+  end
+  STDOUT.flush
+  STDERR.flush
+end
+
+# make sure conditional operators work
+
+test_check "assignment"
+
+a=[]; a[0] ||= "bar";
+test_ok(a[0] == "bar")
+h={}; h["foo"] ||= "bar";
+test_ok(h["foo"] == "bar")
+
+aa = 5
+aa ||= 25
+test_ok(aa == 5)
+bb ||= 25
+test_ok(bb == 25)
+cc &&=33
+test_ok(cc == nil)
+cc = 5
+cc &&=44
+test_ok(cc == 44)
+
+a = nil; test_ok(a == nil)
+a = 1; test_ok(a == 1)
+a = []; test_ok(a == [])
+a = [1]; test_ok(a == [1])
+a = [nil]; test_ok(a == [nil])
+a = [[]]; test_ok(a == [[]])
+a = [1,2]; test_ok(a == [1,2])
+a = [*[]]; test_ok(a == [])
+a = [*[1]]; test_ok(a == [1])
+a = [*[1,2]]; test_ok(a == [1,2])
+
+a = *[]; test_ok(a == [])
+a = *[1]; test_ok(a == [1])
+a = *[nil]; test_ok(a == [nil])
+a = *[[]]; test_ok(a == [[]])
+a = *[1,2]; test_ok(a == [1,2])
+a = *[*[]]; test_ok(a == [])
+a = *[*[1]]; test_ok(a == [1])
+a = *[*[1,2]]; test_ok(a == [1,2])
+
+a, = nil; test_ok(a == nil)
+a, = 1; test_ok(a == 1)
+a, = []; test_ok(a == nil)
+a, = [1]; test_ok(a == 1)
+a, = [nil]; test_ok(a == nil)
+a, = [[]]; test_ok(a == [])
+a, = 1,2; test_ok(a == 1)
+a, = [1,2]; test_ok(a == 1)
+a, = [*[]]; test_ok(a == nil)
+a, = [*[1]]; test_ok(a == 1)
+a, = *[1,2]; test_ok(a == 1)
+a, = [*[1,2]]; test_ok(a == 1)
+
+a, = *[]; test_ok(a == nil)
+a, = *[1]; test_ok(a == 1)
+a, = *[nil]; test_ok(a == nil)
+a, = *[[]]; test_ok(a == [])
+a, = *[1,2]; test_ok(a == 1)
+a, = *[*[]]; test_ok(a == nil)
+a, = *[*[1]]; test_ok(a == 1)
+a, = *[*[1,2]]; test_ok(a == 1)
+
+*a = nil; test_ok(a == [nil])
+*a = 1; test_ok(a == [1])
+*a = []; test_ok(a == [])
+*a = [1]; test_ok(a == [1])
+*a = [nil]; test_ok(a == [nil])
+*a = [[]]; test_ok(a == [[]])
+*a = [1,2]; test_ok(a == [1,2])
+*a = [*[]]; test_ok(a == [])
+*a = [*[1]]; test_ok(a == [1])
+*a = [*[1,2]]; test_ok(a == [1,2])
+
+*a = *[]; test_ok(a == [])
+*a = *[1]; test_ok(a == [1])
+*a = *[nil]; test_ok(a == [nil])
+*a = *[[]]; test_ok(a == [[]])
+*a = *[1,2]; test_ok(a == [1,2])
+*a = *[*[]]; test_ok(a == [])
+*a = *[*[1]]; test_ok(a == [1])
+*a = *[*[1,2]]; test_ok(a == [1,2])
+
+a,b,*c = nil; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = 1; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = []; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = [1]; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = [nil]; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = [[]]; test_ok([a,b,c] == [[],nil,[]])
+a,b,*c = [1,2]; test_ok([a,b,c] == [1,2,[]])
+a,b,*c = [*[]]; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = [*[1]]; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = [*[1,2]]; test_ok([a,b,c] == [1,2,[]])
+
+a,b,*c = *[]; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = *[1]; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = *[nil]; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = *[[]]; test_ok([a,b,c] == [[],nil,[]])
+a,b,*c = *[1,2]; test_ok([a,b,c] == [1,2,[]])
+a,b,*c = *[*[]]; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = *[*[1]]; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = *[*[1,2]]; test_ok([a,b,c] == [1,2,[]])
+
+def f; yield nil; end; f {|a| test_ok(a == nil)}
+def f; yield 1; end; f {|a| test_ok(a == 1)}
+def f; yield []; end; f {|a| test_ok(a == [])}
+def f; yield [1]; end; f {|a| test_ok(a == [1])}
+def f; yield [nil]; end; f {|a| test_ok(a == [nil])}
+def f; yield [[]]; end; f {|a| test_ok(a == [[]])}
+def f; yield [*[]]; end; f {|a| test_ok(a == [])}
+def f; yield [*[1]]; end; f {|a| test_ok(a == [1])}
+def f; yield [*[1,2]]; end; f {|a| test_ok(a == [1,2])}
+def f; yield *[]; end; f {|a| test_ok(a == nil)}
+def f; yield *[1]; end; f {|a| test_ok(a == 1)}
+def f; yield *[nil]; end; f {|a| test_ok(a == nil)}
+def f; yield *[[]]; end; f {|a| test_ok(a == [])}
+def f; yield *[*[]]; end; f {|a| test_ok(a == nil)}
+def f; yield *[*[1]]; end; f {|a| test_ok(a == 1)}
+def f; yield *[*[1,2]]; end; f {|a| test_ok(a == 1)}
+
+def f; yield; end; f {|a,| test_ok(a == nil)}
+def f; yield nil; end; f {|a,| test_ok(a == nil)}
+def f; yield 1; end; f {|a,| test_ok(a == 1)}
+def f; yield []; end; f {|a,| test_ok(a == nil)}
+def f; yield [1]; end; f {|a,| test_ok(a == 1)}
+def f; yield [nil]; end; f {|a,| test_ok(a == nil)}
+def f; yield [[]]; end; f {|a,| test_ok(a == [])}
+def f; yield [*[]]; end; f {|a,| test_ok(a == nil)}
+def f; yield [*[1]]; end; f {|a,| test_ok(a == 1)}
+def f; yield [*[1,2]]; end; f {|a,| test_ok(a == 1)}
+
+def f; yield *[]; end; f {|a,| test_ok(a == nil)}
+def f; yield *[1]; end; f {|a,| test_ok(a == 1)}
+def f; yield *[nil]; end; f {|a,| test_ok(a == nil)}
+def f; yield *[[]]; end; f {|a,| test_ok(a == nil)}
+def f; yield *[*[]]; end; f {|a,| test_ok(a == nil)}
+def f; yield *[*[1]]; end; f {|a,| test_ok(a == 1)}
+def f; yield *[*[1,2]]; end; f {|a,| test_ok(a == 1)}
+
+def f; yield; end; f {|*a| test_ok(a == [])}
+def f; yield nil; end; f {|*a| test_ok(a == [nil])}
+def f; yield 1; end; f {|*a| test_ok(a == [1])}
+def f; yield []; end; f {|*a| test_ok(a == [[]])}
+def f; yield [1]; end; f {|*a| test_ok(a == [[1]])}
+def f; yield [nil]; end; f {|*a| test_ok(a == [[nil]])}
+def f; yield [[]]; end; f {|*a| test_ok(a == [[[]]])}
+def f; yield [1,2]; end; f {|*a| test_ok(a == [[1,2]])}
+def f; yield [*[]]; end; f {|*a| test_ok(a == [[]])}
+def f; yield [*[1]]; end; f {|*a| test_ok(a == [[1]])}
+def f; yield [*[1,2]]; end; f {|*a| test_ok(a == [[1,2]])}
+
+def f; yield *[]; end; f {|*a| test_ok(a == [])}
+def f; yield *[1]; end; f {|*a| test_ok(a == [1])}
+def f; yield *[nil]; end; f {|*a| test_ok(a == [nil])}
+def f; yield *[[]]; end; f {|*a| test_ok(a == [[]])}
+def f; yield *[*[]]; end; f {|*a| test_ok(a == [])}
+def f; yield *[*[1]]; end; f {|*a| test_ok(a == [1])}
+def f; yield *[*[1,2]]; end; f {|*a| test_ok(a == [1,2])}
+
+def f; yield; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield nil; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield 1; end; f {|a,b,*c| test_ok([a,b,c] == [1,nil,[]])}
+def f; yield []; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield [1]; end; f {|a,b,*c| test_ok([a,b,c] == [1,nil,[]])}
+def f; yield [nil]; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield [[]]; end; f {|a,b,*c| test_ok([a,b,c] == [[],nil,[]])}
+def f; yield [*[]]; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield [*[1]]; end; f {|a,b,*c| test_ok([a,b,c] == [1,nil,[]])}
+def f; yield [*[1,2]]; end; f {|a,b,*c| test_ok([a,b,c] == [1,2,[]])}
+
+def f; yield *[]; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield *[1]; end; f {|a,b,*c| test_ok([a,b,c] == [1,nil,[]])}
+def f; yield *[nil]; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield *[[]]; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield *[*[]]; end; f {|a,b,*c| test_ok([a,b,c] == [nil,nil,[]])}
+def f; yield *[*[1]]; end; f {|a,b,*c| test_ok([a,b,c] == [1,nil,[]])}
+def f; yield *[*[1,2]]; end; f {|a,b,*c| test_ok([a,b,c] == [1,2,[]])}
+
+def r; return; end; a = r(); test_ok(a == nil)
+def r; return nil; end; a = r(); test_ok(a == nil)
+def r; return 1; end; a = r(); test_ok(a == 1)
+def r; return []; end; a = r(); test_ok(a == [])
+def r; return [1]; end; a = r(); test_ok(a == [1])
+def r; return [nil]; end; a = r(); test_ok(a == [nil])
+def r; return [[]]; end; a = r(); test_ok(a == [[]])
+def r; return [*[]]; end; a = r(); test_ok(a == [])
+def r; return [*[1]]; end; a = r(); test_ok(a == [1])
+def r; return [*[1,2]]; end; a = r(); test_ok(a == [1,2])
+
+def r; return *[]; end; a = r(); test_ok(a == [])
+def r; return *[1]; end; a = r(); test_ok(a == [1])
+def r; return *[nil]; end; a = r(); test_ok(a == [nil])
+def r; return *[[]]; end; a = r(); test_ok(a == [[]])
+def r; return *[*[]]; end; a = r(); test_ok(a == [])
+def r; return *[*[1]]; end; a = r(); test_ok(a == [1])
+def r; return *[*[1,2]]; end; a = r(); test_ok(a == [1,2])
+
+def r; return *[[]]; end; a = *r(); test_ok(a == [[]])
+def r; return *[*[1,2]]; end; a = *r(); test_ok(a == [1,2])
+
+def r; return; end; *a = r(); test_ok(a == [nil])
+def r; return nil; end; *a = r(); test_ok(a == [nil])
+def r; return 1; end; *a = r(); test_ok(a == [1])
+def r; return []; end; *a = r(); test_ok(a == [])
+def r; return [1]; end; *a = r(); test_ok(a == [1])
+def r; return [nil]; end; *a = r(); test_ok(a == [nil])
+def r; return [[]]; end; *a = r(); test_ok(a == [[]])
+def r; return [1,2]; end; *a = r(); test_ok(a == [1,2])
+def r; return [*[]]; end; *a = r(); test_ok(a == [])
+def r; return [*[1]]; end; *a = r(); test_ok(a == [1])
+def r; return [*[1,2]]; end; *a = r(); test_ok(a == [1,2])
+
+def r; return *[]; end; *a = r(); test_ok(a == [])
+def r; return *[1]; end; *a = r(); test_ok(a == [1])
+def r; return *[nil]; end; *a = r(); test_ok(a == [nil])
+def r; return *[[]]; end; *a = r(); test_ok(a == [[]])
+def r; return *[1,2]; end; *a = r(); test_ok(a == [1,2])
+def r; return *[*[]]; end; *a = r(); test_ok(a == [])
+def r; return *[*[1]]; end; *a = r(); test_ok(a == [1])
+def r; return *[*[1,2]]; end; *a = r(); test_ok(a == [1,2])
+
+def r; return *[[]]; end; *a = *r(); test_ok(a == [[]])
+def r; return *[1,2]; end; *a = *r(); test_ok(a == [1,2])
+def r; return *[*[1,2]]; end; *a = *r(); test_ok(a == [1,2])
+
+def r; return; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return nil; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return 1; end; a,b,*c = r(); test_ok([a,b,c] == [1,nil,[]])
+def r; return []; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return [1]; end; a,b,*c = r(); test_ok([a,b,c] == [1,nil,[]])
+def r; return [nil]; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return [[]]; end; a,b,*c = r(); test_ok([a,b,c] == [[],nil,[]])
+def r; return [1,2]; end; a,b,*c = r(); test_ok([a,b,c] == [1,2,[]])
+def r; return [*[]]; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return [*[1]]; end; a,b,*c = r(); test_ok([a,b,c] == [1,nil,[]])
+def r; return [*[1,2]]; end; a,b,*c = r(); test_ok([a,b,c] == [1,2,[]])
+
+def r; return *[]; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return *[1]; end; a,b,*c = r(); test_ok([a,b,c] == [1,nil,[]])
+def r; return *[nil]; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return *[[]]; end; a,b,*c = r(); test_ok([a,b,c] == [[],nil,[]])
+def r; return *[1,2]; end; a,b,*c = r(); test_ok([a,b,c] == [1,2,[]])
+def r; return *[*[]]; end; a,b,*c = r(); test_ok([a,b,c] == [nil,nil,[]])
+def r; return *[*[1]]; end; a,b,*c = r(); test_ok([a,b,c] == [1,nil,[]])
+def r; return *[*[1,2]]; end; a,b,*c = r(); test_ok([a,b,c] == [1,2,[]])
+
+f = lambda {|r,| test_ok([] == r)}
+f.call([], *[])
+
+f = lambda {|r,*l| test_ok([] == r); test_ok([1] == l)}
+f.call([], *[1])
+
+f = lambda{|x| x}
+test_ok(f.call(42) == 42)
+test_ok(f.call([42]) == [42])
+test_ok(f.call([[42]]) == [[42]])
+test_ok(f.call([42,55]) == [42,55])
+
+f = lambda{|x,| x}
+test_ok(f.call(42) == 42)
+test_ok(f.call([42]) == [42])
+test_ok(f.call([[42]]) == [[42]])
+test_ok(f.call([42,55]) == [42,55])
+
+f = lambda{|*x| x}
+test_ok(f.call(42) == [42])
+test_ok(f.call([42]) == [[42]])
+test_ok(f.call([[42]]) == [[[42]]])
+test_ok(f.call([42,55]) == [[42,55]])
+test_ok(f.call(42,55) == [42,55])
+
+f = lambda { |a, b=42, *c| [a,b,c] }
+test_ok(f.call(1      ) == [1,42,[  ]] )
+test_ok(f.call(1,43   ) == [1,43,[  ]] )
+test_ok(f.call(1,43,44) == [1,43,[44]] )
+
+f = lambda { |a, b=(a|16), *c, &block| [a,b,c,block&&block[]] }
+test_ok(f.call(8      )     == [8,24,[  ],nil] )
+test_ok(f.call(8,43   )     == [8,43,[  ],nil] )
+test_ok(f.call(8,43,44)     == [8,43,[44],nil] )
+test_ok(f.call(8      ){45} == [8,24,[  ],45 ] )
+test_ok(f.call(8,43   ){45} == [8,43,[  ],45 ] )
+test_ok(f.call(8,43,44){45} == [8,43,[44],45 ] )
+
+f = lambda { |a, b=42, *c, d| [a,b,c,d] }
+test_ok(f.call(1      ,99) == [1,42,[  ],99] )
+test_ok(f.call(1,43   ,99) == [1,43,[  ],99] )
+test_ok(f.call(1,43,44,99) == [1,43,[44],99] )
+
+f = lambda { |a, b=(a|16), &block| [a,b,block&&block[]] }
+test_ok(f.call(8   )     == [8,24,nil] )
+test_ok(f.call(8,43)     == [8,43,nil] )
+test_ok(f.call(8,43)     == [8,43,nil] )
+test_ok(f.call(8   ){45} == [8,24,45 ] )
+test_ok(f.call(8,43){45} == [8,43,45 ] )
+test_ok(f.call(8,43){45} == [8,43,45 ] )
+
+f = lambda { |a, b=42, d| [a,b,d] }
+test_ok(f.call(1   ,99) == [1,42,99] )
+test_ok(f.call(1,43,99) == [1,43,99] )
+test_ok(f.call(1,43,99) == [1,43,99] )
+
+f = lambda { |b=42, *c, &block| [b,c,block&&block[]] }
+test_ok(f.call(     )     == [42,[  ],nil] )
+test_ok(f.call(43   )     == [43,[  ],nil] )
+test_ok(f.call(43,44)     == [43,[44],nil] )
+test_ok(f.call(     ){45} == [42,[  ],45 ] )
+test_ok(f.call(43   ){45} == [43,[  ],45 ] )
+test_ok(f.call(43,44){45} == [43,[44],45 ] )
+
+f = lambda { |b=42, *c, d| [b,c,d] }
+test_ok(f.call(      99) == [42,[  ],99] )
+test_ok(f.call(43   ,99) == [43,[  ],99] )
+test_ok(f.call(43,44,99) == [43,[44],99] )
+
+f = lambda { |b=42, &block| [b,block&&block[]] }
+test_ok(f.call(  )     == [42,nil] )
+test_ok(f.call(43)     == [43,nil] )
+test_ok(f.call(43)     == [43,nil] )
+test_ok(f.call(  ){45} == [42,45 ] )
+test_ok(f.call(43){45} == [43,45 ] )
+test_ok(f.call(43){45} == [43,45 ] )
+
+f = lambda { |b=42, d| [b,d] }
+test_ok(f.call(   99) == [42,99] )
+test_ok(f.call(43,99) == [43,99] )
+test_ok(f.call(43,99) == [43,99] )
+
+
+a,=*[1]
+test_ok(a == 1)
+a,=*[[1]]
+test_ok(a == [1])
+a,=*[[[1]]]
+test_ok(a == [[1]])
+
+x, (y, z) = 1, 2, 3
+test_ok([1,2,nil] == [x,y,z])
+x, (y, z) = 1, [2,3]
+test_ok([1,2,3] == [x,y,z])
+x, (y, z) = 1, [2]
+test_ok([1,2,nil] == [x,y,z])
+
+a = loop do break; end; test_ok(a == nil)
+a = loop do break nil; end; test_ok(a == nil)
+a = loop do break 1; end; test_ok(a == 1)
+a = loop do break []; end; test_ok(a == [])
+a = loop do break [1]; end; test_ok(a == [1])
+a = loop do break [nil]; end; test_ok(a == [nil])
+a = loop do break [[]]; end; test_ok(a == [[]])
+a = loop do break [*[]]; end; test_ok(a == [])
+a = loop do break [*[1]]; end; test_ok(a == [1])
+a = loop do break [*[1,2]]; end; test_ok(a == [1,2])
+
+a = loop do break *[]; end; test_ok(a == [])
+a = loop do break *[1]; end; test_ok(a == [1])
+a = loop do break *[nil]; end; test_ok(a == [nil])
+a = loop do break *[[]]; end; test_ok(a == [[]])
+a = loop do break *[*[]]; end; test_ok(a == [])
+a = loop do break *[*[1]]; end; test_ok(a == [1])
+a = loop do break *[*[1,2]]; end; test_ok(a == [1,2])
+
+*a = loop do break; end; test_ok(a == [nil])
+*a = loop do break nil; end; test_ok(a == [nil])
+*a = loop do break 1; end; test_ok(a == [1])
+*a = loop do break []; end; test_ok(a == [])
+*a = loop do break [1]; end; test_ok(a == [1])
+*a = loop do break [nil]; end; test_ok(a == [nil])
+*a = loop do break [[]]; end; test_ok(a == [[]])
+*a = loop do break [1,2]; end; test_ok(a == [1,2])
+*a = loop do break [*[]]; end; test_ok(a == [])
+*a = loop do break [*[1]]; end; test_ok(a == [1])
+*a = loop do break [*[1,2]]; end; test_ok(a == [1,2])
+
+*a = loop do break *[]; end; test_ok(a == [])
+*a = loop do break *[1]; end; test_ok(a == [1])
+*a = loop do break *[nil]; end; test_ok(a == [nil])
+*a = loop do break *[[]]; end; test_ok(a == [[]])
+*a = loop do break *[1,2]; end; test_ok(a == [1,2])
+*a = loop do break *[*[]]; end; test_ok(a == [])
+*a = loop do break *[*[1]]; end; test_ok(a == [1])
+*a = loop do break *[*[1,2]]; end; test_ok(a == [1,2])
+
+*a = *loop do break *[[]]; end; test_ok(a == [[]])
+*a = *loop do break *[1,2]; end; test_ok(a == [1,2])
+*a = *loop do break *[*[1,2]]; end; test_ok(a == [1,2])
+
+a,b,*c = loop do break; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break nil; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break 1; end; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = loop do break []; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break [1]; end; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = loop do break [nil]; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break [[]]; end; test_ok([a,b,c] == [[],nil,[]])
+a,b,*c = loop do break [1,2]; end; test_ok([a,b,c] == [1,2,[]])
+a,b,*c = loop do break [*[]]; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break [*[1]]; end; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = loop do break [*[1,2]]; end; test_ok([a,b,c] == [1,2,[]])
+
+a,b,*c = loop do break *[]; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break *[1]; end; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = loop do break *[nil]; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break *[[]]; end; test_ok([a,b,c] == [[],nil,[]])
+a,b,*c = loop do break *[1,2]; end; test_ok([a,b,c] == [1,2,[]])
+a,b,*c = loop do break *[*[]]; end; test_ok([a,b,c] == [nil,nil,[]])
+a,b,*c = loop do break *[*[1]]; end; test_ok([a,b,c] == [1,nil,[]])
+a,b,*c = loop do break *[*[1,2]]; end; test_ok([a,b,c] == [1,2,[]])
+
+def r(val); a = yield(); test_ok(a == val, 2); end
+r(nil){next}
+r(nil){next nil}
+r(1){next 1}
+r([]){next []}
+r([1]){next [1]}
+r([nil]){next [nil]}
+r([[]]){next [[]]}
+r([]){next [*[]]}
+r([1]){next [*[1]]}
+r([1,2]){next [*[1,2]]}
+
+r([]){next *[]}
+r([1]){next *[1]}
+r([nil]){next *[nil]}
+r([[]]){next *[[]]}
+r([]){next *[*[]]}
+r([1]){next *[*[1]]}
+r([1,2]){next *[*[1,2]]}
+
+def r(val); *a = yield(); test_ok(a == val, 2); end
+r([nil]){next}
+r([nil]){next nil}
+r([1]){next 1}
+r([]){next []}
+r([1]){next [1]}
+r([nil]){next [nil]}
+r([[]]){next [[]]}
+r([1,2]){next [1,2]}
+r([]){next [*[]]}
+r([1]){next [*[1]]}
+r([1,2]){next [*[1,2]]}
+
+def r(val); *a = *yield(); test_ok(a == val, 2); end
+r([[]]){next *[[]]}
+r([1,2]){next *[1,2]}
+r([1,2]){next *[*[1,2]]}
+
+def r(val); a,b,*c = yield(); test_ok([a,b,c] == val, 2); end
+r([nil,nil,[]]){next}
+r([nil,nil,[]]){next nil}
+r([1,nil,[]]){next 1}
+r([nil,nil,[]]){next []}
+r([1,nil,[]]){next [1]}
+r([nil,nil,[]]){next [nil]}
+r([[],nil,[]]){next [[]]}
+r([1,2,[]]){next [1,2]}
+r([nil,nil,[]]){next [*[]]}
+r([1,nil,[]]){next [*[1]]}
+r([1,2,[]]){next [*[1,2]]}
+
+def r(val); a,b,*c = *yield(); test_ok([a,b,c] == val, 2); end
+r([[],nil,[]]){next *[[]]}
+r([1,2,[]]){next *[1,2]}
+r([1,2,[]]){next *[*[1,2]]}
+
+test_check "condition"
+
+$x = '0';
+
+$x == $x && test_ok(true)
+$x != $x && test_ok(false)
+$x == $x || test_ok(false)
+$x != $x || test_ok(true)
+
+# first test to see if we can run the tests.
+
+test_check "if/unless";
+
+$x = 'test';
+test_ok(if $x == $x then true else false end)
+$bad = false
+unless $x == $x
+  $bad = true
+end
+test_ok(!$bad)
+test_ok(unless $x != $x then true else false end)
+
+test_check "case"
+
+case 5
+when 1, 2, 3, 4, 6, 7, 8
+  test_ok(false)
+when 5
+  test_ok(true)
+end
+
+case 5
+when 5
+  test_ok(true)
+when 1..10
+  test_ok(false)
+end
+
+case 5
+when 1..10
+  test_ok(true)
+else
+  test_ok(false)
+end
+
+case 5
+when 5
+  test_ok(true)
+else
+  test_ok(false)
+end
+
+case "foobar"
+when /^f.*r$/
+  test_ok(true)
+else
+  test_ok(false)
+end
+
+test_check "while/until";
+
+while_tmp = "while_tmp.#{$$}"
+tmp = open(while_tmp, "w")
+tmp.print "tvi925\n";
+tmp.print "tvi920\n";
+tmp.print "vt100\n";
+tmp.print "Amiga\n";
+tmp.print "paper\n";
+tmp.close
+
+# test break
+
+tmp = open(while_tmp, "r")
+test_ok(tmp.kind_of?(File))
+
+while line = tmp.gets()
+  break if /vt100/ =~ line
+end
+
+test_ok(!tmp.eof? && /vt100/ =~ line)
+tmp.close
+
+# test next
+$bad = false
+tmp = open(while_tmp, "r")
+while line = tmp.gets()
+  next if /vt100/ =~ line
+  $bad = 1 if /vt100/ =~ line
+end
+test_ok(!(!tmp.eof? || /vt100/ =~ line || $bad))
+tmp.close
+
+# test redo
+$bad = false
+tmp = open(while_tmp, "r")
+while line = tmp.gets()
+  lastline = line
+  line = line.gsub(/vt100/, 'VT100')
+  if lastline != line
+    line.gsub!('VT100', 'Vt100')
+    redo
+  end
+  $bad = 1 if /vt100/ =~ line
+  $bad = 1 if /VT100/ =~ line
+end
+test_ok(tmp.eof? && !$bad)
+tmp.close
+
+sum=0
+for i in 1..10
+  sum += i
+  i -= 1
+  if i > 0
+    redo
+  end
+end
+test_ok(sum == 220)
+
+# test interval
+$bad = false
+tmp = open(while_tmp, "r")
+while line = tmp.gets()
+  break if 3
+  case line
+  when /vt100/, /Amiga/, /paper/
+    $bad = true
+  end
+end
+test_ok(!$bad)
+tmp.close
+
+File.unlink while_tmp or `/bin/rm -f "#{while_tmp}"`
+test_ok(!File.exist?(while_tmp))
+
+i = 0
+until i>4
+  i+=1
+end
+test_ok(i>4)
+
+
+# exception handling
+test_check "exception";
+
+begin
+  raise "this must be handled"
+  test_ok(false)
+rescue
+  test_ok(true)
+end
+
+$bad = true
+begin
+  raise "this must be handled no.2"
+rescue
+  if $bad
+    $bad = false
+    retry
+    test_ok(false)
+  end
+end
+test_ok(true)
+
+# exception in rescue clause
+$string = "this must be handled no.3"
+begin
+  begin
+    raise "exception in rescue clause"
+  rescue
+    raise $string
+  end
+  test_ok(false)
+rescue => e
+  test_ok($! == e)
+  test_ok(e.message == $string)
+  test_ok(e != $string)
+end
+
+# exception in ensure clause
+begin
+  begin
+    raise "this must be handled no.4"
+  ensure
+    raise "exception in ensure clause"
+  end
+  test_ok(false)
+rescue
+  test_ok(true)
+end
+
+$bad = true
+begin
+  begin
+    raise "this must be handled no.5"
+  ensure
+    $bad = false
+  end
+rescue
+end
+test_ok(!$bad)
+
+$bad = true
+begin
+  begin
+    raise "this must be handled no.6"
+  ensure
+    $bad = false
+  end
+rescue
+end
+test_ok(!$bad)
+
+$bad = true
+while true
+  begin
+    break
+  ensure
+    $bad = false
+  end
+end
+test_ok(!$bad)
+
+test_ok(catch(:foo) {
+     loop do
+       loop do
+	 throw :foo, true
+	 break
+       end
+       break
+       test_ok(false)			# should not reach here
+     end
+     false
+   })
+
+test_check "array"
+test_ok([1, 2] + [3, 4] == [1, 2, 3, 4])
+test_ok([1, 2] * 2 == [1, 2, 1, 2])
+test_ok([1, 2] * ":" == "1:2")
+
+test_ok([1, 2].hash == [1, 2].hash)
+
+test_ok([1,2,3] & [2,3,4] == [2,3])
+test_ok([1,2,3] | [2,3,4] == [1,2,3,4])
+test_ok([1,2,3] - [2,3] == [1])
+
+$x = [0, 1, 2, 3, 4, 5]
+test_ok($x[2] == 2)
+test_ok($x[1..3] == [1, 2, 3])
+test_ok($x[1,3] == [1, 2, 3])
+
+$x[0, 2] = 10
+test_ok($x[0] == 10 && $x[1] == 2)
+
+$x[0, 0] = -1
+test_ok($x[0] == -1 && $x[1] == 10)
+
+$x[-1, 1] = 20
+test_ok($x[-1] == 20 && $x.pop == 20)
+
+# array and/or
+test_ok(([1,2,3]&[2,4,6]) == [2])
+test_ok(([1,2,3]|[2,4,6]) == [1,2,3,4,6])
+
+# compact
+$x = [nil, 1, nil, nil, 5, nil, nil]
+$x.compact!
+test_ok($x == [1, 5])
+
+# uniq
+$x = [1, 1, 4, 2, 5, 4, 5, 1, 2]
+$x.uniq!
+test_ok($x == [1, 4, 2, 5])
+
+# empty?
+test_ok(!$x.empty?)
+$x = []
+test_ok($x.empty?)
+
+# sort
+$x = ["it", "came", "to", "pass", "that", "..."]
+$x = $x.sort.join(" ")
+test_ok($x == "... came it pass that to")
+$x = [2,5,3,1,7]
+$x.sort!{|a,b| a<=>b}		# sort with condition
+test_ok($x == [1,2,3,5,7])
+$x.sort!{|a,b| b-a}		# reverse sort
+test_ok($x == [7,5,3,2,1])
+
+# split test
+$x = "The Book of Mormon"
+test_ok($x.split(//).reverse!.join == $x.reverse)
+test_ok($x.reverse == $x.reverse!)
+test_ok("1 byte string".split(//).reverse.join(":") == "g:n:i:r:t:s: :e:t:y:b: :1")
+$x = "a b c  d"
+test_ok($x.split == ['a', 'b', 'c', 'd'])
+test_ok($x.split(' ') == ['a', 'b', 'c', 'd'])
+test_ok(defined? "a".chomp)
+test_ok("abc".scan(/./) == ["a", "b", "c"])
+test_ok("1a2b3c".scan(/(\d.)/) == [["1a"], ["2b"], ["3c"]])
+# non-greedy match
+test_ok("a=12;b=22".scan(/(.*?)=(\d*);?/) == [["a", "12"], ["b", "22"]])
+
+$x = [1]
+test_ok(($x * 5).join(":") == '1:1:1:1:1')
+test_ok(($x * 1).join(":") == '1')
+test_ok(($x * 0).join(":") == '')
+
+*$x = *(1..7).to_a
+test_ok($x.size == 7)
+test_ok($x == [1, 2, 3, 4, 5, 6, 7])
+
+$x = [1,2,3]
+$x[1,0] = $x
+test_ok($x == [1,1,2,3,2,3])
+
+$x = [1,2,3]
+$x[-1,0] = $x
+test_ok($x == [1,2,1,2,3,3])
+
+$x = [1,2,3]
+$x.concat($x)
+test_ok($x == [1,2,3,1,2,3])
+
+test_check "hash"
+$x = {1=>2, 2=>4, 3=>6}
+
+test_ok($x[1] == 2)
+
+test_ok(begin
+     for k,v in $x
+       raise if k*2 != v
+     end
+     true
+   rescue
+     false
+   end)
+
+test_ok($x.length == 3)
+test_ok($x.has_key?(1))
+test_ok($x.has_value?(4))
+test_ok($x.values_at(2,3) == [4,6])
+test_ok($x == {1=>2, 2=>4, 3=>6})
+
+$z = $x.keys.sort.join(":")
+test_ok($z == "1:2:3")
+
+$z = $x.values.sort.join(":")
+test_ok($z == "2:4:6")
+test_ok($x == $x)
+
+$x.shift
+test_ok($x.length == 2)
+
+$z = [1,2]
+$x[$z] = 256
+test_ok($x[$z] == 256)
+
+$x = Hash.new(0)
+$x[1] = 1
+test_ok($x[1] == 1)
+test_ok($x[2] == 0)
+
+$x = Hash.new([])
+test_ok($x[22] == [])
+test_ok($x[22].equal?($x[22]))
+
+$x = Hash.new{[]}
+test_ok($x[22] == [])
+test_ok(!$x[22].equal?($x[22]))
+
+$x = Hash.new{|h,k| $z = k; h[k] = k*2}
+$z = 0
+test_ok($x[22] == 44)
+test_ok($z == 22)
+$z = 0
+test_ok($x[22] == 44)
+test_ok($z == 0)
+$x.default = 5
+test_ok($x[23] == 5)
+
+$x = Hash.new
+def $x.default(k)
+  $z = k
+  self[k] = k*2
+end
+$z = 0
+test_ok($x[22] == 44)
+test_ok($z == 22)
+$z = 0
+test_ok($x[22] == 44)
+test_ok($z == 0)
+
+test_check "iterator"
+
+# yield at top level
+test_ok(!defined?(yield))
+
+$x = [1, 2, 3, 4]
+$y = []
+
+# iterator over array
+for i in $x
+  $y.push i
+end
+test_ok($x == $y)
+
+# nested iterator
+def tt
+  1.upto(10) {|i|
+    yield i
+  }
+end
+
+i=0
+tt{|i| break if i == 5}
+test_ok(i == 0)
+
+def tt2(dummy)
+  yield 1
+end
+
+def tt3(&block)
+  tt2(raise(ArgumentError,""),&block)
+end
+
+$x = false
+begin
+  tt3{}
+rescue ArgumentError
+  $x = true
+rescue Exception
+end
+test_ok($x)
+
+def tt4 &block
+  tt2(raise(ArgumentError,""),&block)
+end
+$x = false
+begin
+  tt4{}
+rescue ArgumentError
+  $x = true
+rescue Exception
+end
+test_ok($x)
+
+# iterator break/redo/next/retry
+done = true
+loop{
+  break
+  done = false			# should not reach here
+}
+test_ok(done)
+
+done = false
+$bad = false
+loop {
+  break if done
+  done = true
+  next
+  $bad = true			# should not reach here
+}
+test_ok(!$bad)
+
+done = false
+$bad = false
+loop {
+  break if done
+  done = true
+  redo
+  $bad = true			# should not reach here
+}
+test_ok(!$bad)
+
+$x = []
+for i in 1 .. 7
+  $x.push i
+end
+test_ok($x.size == 7)
+test_ok($x == [1, 2, 3, 4, 5, 6, 7])
+
+# append method to built-in class
+class Array
+  def iter_test1
+    collect{|e| [e, yield(e)]}.sort{|a,b|a[1]<=>b[1]}
+  end
+  def iter_test2
+    a = collect{|e| [e, yield(e)]}
+    a.sort{|a,b|a[1]<=>b[1]}
+  end
+end
+$x = [[1,2],[3,4],[5,6]]
+test_ok($x.iter_test1{|x|x} == $x.iter_test2{|x|x})
+
+class IterTest
+  def initialize(e); @body = e; end
+
+  def each0(&block); @body.each(&block); end
+  def each1(&block); @body.each {|*x| block.call(*x) } end
+  def each2(&block); @body.each {|*x| block.call(x) } end
+  def each3(&block); @body.each {|x| block.call(*x) } end
+  def each4(&block); @body.each {|x| block.call(x) } end
+  def each5; @body.each {|*x| yield(*x) } end
+  def each6; @body.each {|*x| yield(x) } end
+  def each7; @body.each {|x| yield(*x) } end
+  def each8; @body.each {|x| yield(x) } end
+
+  def f(a)
+    a
+  end
+end
+test_ok(IterTest.new(nil).method(:f).to_proc.call([1]) == [1])
+m = /\w+/.match("abc")
+test_ok(IterTest.new(nil).method(:f).to_proc.call([m]) == [m])
+
+IterTest.new([0]).each0 {|x| test_ok(x == 0)}
+IterTest.new([1]).each1 {|x| test_ok(x == 1)}
+IterTest.new([2]).each2 {|x| test_ok(x == [2])}
+#IterTest.new([3]).each3 {|x| test_ok(x == 3)}
+IterTest.new([4]).each4 {|x| test_ok(x == 4)}
+IterTest.new([5]).each5 {|x| test_ok(x == 5)}
+IterTest.new([6]).each6 {|x| test_ok(x == [6])}
+#IterTest.new([7]).each7 {|x| test_ok(x == 7)}
+IterTest.new([8]).each8 {|x| test_ok(x == 8)}
+
+IterTest.new([[0]]).each0 {|x| test_ok(x == [0])}
+IterTest.new([[1]]).each1 {|x| test_ok(x == [1])}
+IterTest.new([[2]]).each2 {|x| test_ok(x == [[2]])}
+IterTest.new([[3]]).each3 {|x| test_ok(x == 3)}
+IterTest.new([[4]]).each4 {|x| test_ok(x == [4])}
+IterTest.new([[5]]).each5 {|x| test_ok(x == [5])}
+IterTest.new([[6]]).each6 {|x| test_ok(x == [[6]])}
+IterTest.new([[7]]).each7 {|x| test_ok(x == 7)}
+IterTest.new([[8]]).each8 {|x| test_ok(x == [8])}
+
+IterTest.new([[0,0]]).each0 {|*x| test_ok(x == [[0,0]])}
+IterTest.new([[8,8]]).each8 {|*x| test_ok(x == [[8,8]])}
+
+def m0(v)
+  v
+end
+
+def m1
+  m0(block_given?)
+end
+test_ok(m1{p 'test'})
+test_ok(!m1)
+
+def m
+  m0(block_given?,&Proc.new{})
+end
+test_ok(m1{p 'test'})
+test_ok(!m1)
+
+class C
+  include Enumerable
+  def initialize
+    @a = [1,2,3]
+  end
+  def each(&block)
+    @a.each(&block)
+  end
+end
+
+test_ok(C.new.collect{|n| n} == [1,2,3])
+
+test_ok(Proc == lambda{}.class)
+test_ok(Proc == Proc.new{}.class)
+lambda{|a|test_ok(a==1)}.call(1)
+def block_test(klass, &block)
+  test_ok(klass === block)
+end
+
+block_test(NilClass)
+block_test(Proc){}
+
+def call_argument_test(state, proc, *args)
+  x = state
+  begin
+    proc.call(*args)
+  rescue ArgumentError
+    x = !x
+  end
+  test_ok(x,2)
+end
+
+call_argument_test(true, lambda{||})
+call_argument_test(false, lambda{||}, 1)
+call_argument_test(true, lambda{|a,|}, 1)
+call_argument_test(false, lambda{|a,|})
+call_argument_test(false, lambda{|a,|}, 1,2)
+
+call_argument_test(true, Proc.new{||})
+call_argument_test(true, Proc.new{||}, 1)
+call_argument_test(true, Proc.new{|a,|}, 1)
+call_argument_test(true, Proc.new{|a,|})
+call_argument_test(true, Proc.new{|a,|}, 1,2)
+
+def block_get(&block)
+  block
+end
+
+test_ok(Proc == block_get{}.class)
+call_argument_test(true, block_get{||})
+call_argument_test(true, block_get{||}, 1)
+call_argument_test(true, block_get{|a,|}, 1)
+call_argument_test(true, block_get{|a,|})
+call_argument_test(true, block_get{|a,|}, 1,2)
+
+call_argument_test(true, block_get(&lambda{||}))
+call_argument_test(false, block_get(&lambda{||}),1)
+call_argument_test(true, block_get(&lambda{|a,|}),1)
+call_argument_test(false, block_get(&lambda{|a,|}),1,2)
+
+blk = block_get{11}
+test_ok(blk.class == Proc)
+test_ok(blk.to_proc.class == Proc)
+test_ok(blk.clone.call == 11)
+test_ok(block_get(&blk).class == Proc)
+
+lmd = lambda{44}
+test_ok(lmd.class == Proc)
+test_ok(lmd.to_proc.class == Proc)
+test_ok(lmd.clone.call == 44)
+test_ok(block_get(&lmd).class == Proc)
+
+test_ok(Proc.new{|a,| a}.yield(1,2,3) == 1)
+call_argument_test(true, Proc.new{|a,|}, 1,2)
+
+test_ok(Proc.new{|&b| b.call(10)}.call {|x| x} == 10)
+test_ok(Proc.new{|a,&b| b.call(a)}.call(12) {|x| x} == 12)
+
+def test_return1
+  Proc.new {
+    return 55
+  }.yield + 5
+end
+test_ok(test_return1() == 55)
+def test_return2
+  lambda {
+    return 55
+  }.call + 5
+end
+test_ok(test_return2() == 60)
+
+def proc_call(&b)
+  b.call
+end
+def proc_yield()
+  yield
+end
+def proc_return1
+  lambda{return 42}.call+1
+end
+test_ok(proc_return1() == 43)
+def proc_return2
+  ->{return 42}.call+1
+end
+test_ok(proc_return2() == 43)
+def proc_return3
+  proc_call{return 42}+1
+end
+test_ok(proc_return3() == 42)
+def proc_return4
+  proc_yield{return 42}+1
+end
+test_ok(proc_return4() == 42)
+
+def ljump_test(state, proc, *args)
+  x = state
+  begin
+    proc.call(*args)
+  rescue LocalJumpError
+    x = !x
+  end
+  test_ok(x,2)
+end
+
+ljump_test(false, block_get{break})
+ljump_test(true, lambda{break})
+
+def exit_value_test(&block)
+  block.call
+rescue LocalJumpError
+  $!.exit_value
+end
+
+test_ok(45 == exit_value_test{break 45})
+
+test_ok(55 == begin
+              block_get{break 55}.call
+            rescue LocalJumpError
+              $!.exit_value
+            end)
+
+def block_call(&block)
+  block.call
+end
+
+def test_b1
+  block_call{break 11}
+end
+test_ok(test_b1() == 11)
+
+def ljump_rescue(r)
+  begin
+    yield
+  rescue LocalJumpError => e
+    r if /from proc-closure/ =~ e.message
+  end
+end
+
+def test_b2
+  ljump_rescue(22) do
+    block_get{break 21}.call
+  end
+end
+test_ok(test_b2() == 22)
+
+def test_b3
+  ljump_rescue(33) do
+    Proc.new{break 31}.yield
+  end
+end
+test_ok(test_b3() == 33)
+
+def test_b4
+  lambda{break 44}.call
+end
+test_ok(test_b4() == 44)
+
+def test_b5
+  ljump_rescue(55) do
+    b = block_get{break 54}
+    block_call(&b)
+  end
+end
+test_ok(test_b5() == 55)
+
+def test_b6
+  b = lambda{break 67}
+  block_call(&b)
+  66
+end
+test_ok(test_b6() == 66)
+
+def util_r7
+  block_get{break 78}
+end
+
+def test_b7
+  b = util_r7()
+  ljump_rescue(77) do
+    block_call(&b)
+  end
+end
+test_ok(test_b7() == 77)
+
+def util_b8(&block)
+  block_call(&block)
+end
+
+def test_b8
+  util_b8{break 88}
+end
+test_ok(test_b8() == 88)
+
+def util_b9(&block)
+  lambda{block.call; 98}.call
+end
+
+def test_b9
+  util_b9{break 99}
+end
+test_ok(test_b9() == 99)
+
+def util_b10
+  util_b9{break 100}
+end
+
+def test_b10
+  util_b10()
+end
+test_ok(test_b10() == 100)
+
+def test_b11
+  ljump_rescue(111) do
+    loop do
+      Proc.new{break 110}.yield
+      break 112
+    end
+  end
+end
+test_ok(test_b11() == 111)
+
+def test_b12
+  loop do
+    break lambda{break 122}.call
+    break 121
+  end
+end
+test_ok(test_b12() == 122)
+
+def test_b13
+  ljump_rescue(133) do
+    while true
+      Proc.new{break 130}.yield
+      break 131
+    end
+  end
+end
+test_ok(test_b13() == 133)
+
+def test_b14
+  while true
+    break lambda{break 144}.call
+    break 143
+  end
+end
+test_ok(test_b14() == 144)
+
+def test_b15
+  [0].each {|c| yield 1 }
+  156
+end
+test_ok(test_b15{|e| break 155 } == 155)
+
+def marity_test(m)
+  method = method(m)
+  test_ok(method.arity == method.to_proc.arity, 2)
+end
+marity_test(:test_ok)
+marity_test(:marity_test)
+marity_test(:p)
+
+class ITER_TEST1
+   def a
+     block_given?
+   end
+end
+
+class ITER_TEST2 < ITER_TEST1
+   def a
+     test_ok(super)
+     super
+   end
+end
+test_ok(ITER_TEST2.new.a {})
+
+class ITER_TEST3
+  def foo x
+    return yield if block_given?
+    x
+  end
+end
+
+class ITER_TEST4 < ITER_TEST3
+  def foo x
+    test_ok(super == yield)
+    test_ok(super(x, &nil) == x)
+  end
+end
+
+ITER_TEST4.new.foo(44){55}
+
+class ITER_TEST5
+   def tt(aa)
+     aa
+   end
+
+   def uu(a)
+      class << self
+         define_method(:tt) do |sym|
+            super(sym)
+         end
+      end
+   end
+
+   def xx(*x)
+     x.size
+   end
+end
+
+a = ITER_TEST5.new
+a.uu(12)
+test_ok(a.tt(1) == 1)
+
+class ITER_TEST6 < ITER_TEST5
+   def xx(*a)
+      a << 12
+      super
+   end
+end
+
+test_ok(ITER_TEST6.new.xx([24]) == 2)
+
+test_check "float"
+test_ok(2.6.floor == 2)
+test_ok((-2.6).floor == -3)
+test_ok(2.6.ceil == 3)
+test_ok((-2.6).ceil == -2)
+test_ok(2.6.truncate == 2)
+test_ok((-2.6).truncate == -2)
+test_ok(2.6.round == 3)
+test_ok((-2.4).truncate == -2)
+test_ok((13.4 % 1 - 0.4).abs < 0.0001)
+nan = 0.0/0
+def nan_test(x,y)
+  test_ok(x != y)
+  test_ok((x < y) == false)
+  test_ok((x > y) == false)
+  test_ok((x <= y) == false)
+  test_ok((x >= y) == false)
+end
+nan_test(nan, nan)
+nan_test(nan, 0)
+nan_test(nan, 1)
+nan_test(nan, -1)
+nan_test(nan, 1000)
+nan_test(nan, -1000)
+nan_test(nan, 1_000_000_000_000)
+nan_test(nan, -1_000_000_000_000)
+nan_test(nan, 100.0);
+nan_test(nan, -100.0);
+nan_test(nan, 0.001);
+nan_test(nan, -0.001);
+nan_test(nan, 1.0/0);
+nan_test(nan, -1.0/0);
+
+#s = "3.7517675036461267e+17"
+#test_ok(s == sprintf("%.16e", s.to_f))
+f = 3.7517675036461267e+17
+test_ok(f == sprintf("%.16e", f).to_f)
+
+
+test_check "bignum"
+def fact(n)
+  return 1 if n == 0
+  f = 1
+  while n>0
+    f *= n
+    n -= 1
+  end
+  return f
+end
+$x = fact(40)
+test_ok($x == $x)
+test_ok($x == fact(40))
+test_ok($x < $x+2)
+test_ok($x > $x-2)
+test_ok($x == 815915283247897734345611269596115894272000000000)
+test_ok($x != 815915283247897734345611269596115894272000000001)
+test_ok($x+1 == 815915283247897734345611269596115894272000000001)
+test_ok($x/fact(20) == 335367096786357081410764800000)
+$x = -$x
+test_ok($x == -815915283247897734345611269596115894272000000000)
+test_ok(2-(2**32) == -(2**32-2))
+test_ok(2**32 - 5 == (2**32-3)-2)
+
+$good = true;
+for i in 1000..1014
+  $good = false if ((1 << i) != (2**i))
+end
+test_ok($good)
+
+$good = true;
+n1= 1 << 1000
+for i in 1000..1014
+  $good = false if ((1 << i) != n1)
+  n1 *= 2
+end
+test_ok($good)
+
+$good = true;
+n2=n1
+for i in 1..10
+  n1 = n1 / 2
+  n2 = n2 >> 1
+  $good = false if (n1 != n2)
+end
+test_ok($good)
+
+$good = true;
+for i in 4000..4096
+  n1 = 1 << i;
+  if (n1**2-1) / (n1+1) != (n1-1)
+    $good = false
+  end
+end
+test_ok($good)
+
+b = 10**80
+a = b * 9 + 7
+test_ok(7 == a.modulo(b))
+test_ok(-b + 7 == a.modulo(-b))
+test_ok(b + -7 == (-a).modulo(b))
+test_ok(-7 == (-a).modulo(-b))
+test_ok(7 == a.remainder(b))
+test_ok(7 == a.remainder(-b))
+test_ok(-7 == (-a).remainder(b))
+test_ok(-7 == (-a).remainder(-b))
+
+test_ok(10**40+10**20 == 10000000000000000000100000000000000000000)
+test_ok(10**40/10**20 == 100000000000000000000)
+
+a = 677330545177305025495135714080
+b = 14269972710765292560
+test_ok(a % b == 0)
+test_ok(-a % b == 0)
+
+def shift_test(a)
+  b = a / (2 ** 32)
+  c = a >> 32
+  test_ok(b == c)
+
+  b = a * (2 ** 32)
+  c = a << 32
+  test_ok(b == c)
+end
+
+shift_test(-4518325415524767873)
+shift_test(-0xfffffffffffffffff)
+
+test_check "string & char"
+
+test_ok("abcd" == "abcd")
+test_ok("abcd" =~ /abcd/)
+test_ok("abcd" === "abcd")
+# compile time string concatenation
+test_ok("ab" "cd" == "abcd")
+test_ok("#{22}aa" "cd#{44}" == "22aacd44")
+test_ok("#{22}aa" "cd#{44}" "55" "#{66}" == "22aacd445566")
+test_ok("abc" !~ /^$/)
+test_ok("abc\n" !~ /^$/)
+test_ok("abc" !~ /^d*$/)
+test_ok(("abc" =~ /d*$/) == 3)
+test_ok("" =~ /^$/)
+test_ok("\n" =~ /^$/)
+test_ok("a\n\n" =~ /^$/)
+test_ok("abcabc" =~ /.*a/ && $& == "abca")
+test_ok("abcabc" =~ /.*c/ && $& == "abcabc")
+test_ok("abcabc" =~ /.*?a/ && $& == "a")
+test_ok("abcabc" =~ /.*?c/ && $& == "abc")
+test_ok(/(.|\n)*?\n(b|\n)/ =~ "a\nb\n\n" && $& == "a\nb")
+
+test_ok(/^(ab+)+b/ =~ "ababb" && $& == "ababb")
+test_ok(/^(?:ab+)+b/ =~ "ababb" && $& == "ababb")
+test_ok(/^(ab+)+/ =~ "ababb" && $& == "ababb")
+test_ok(/^(?:ab+)+/ =~ "ababb" && $& == "ababb")
+
+test_ok(/(\s+\d+){2}/ =~ " 1 2" && $& == " 1 2")
+test_ok(/(?:\s+\d+){2}/ =~ " 1 2" && $& == " 1 2")
+
+$x = <<END;
+ABCD
+ABCD
+END
+$x.gsub!(/((.|\n)*?)B((.|\n)*?)D/, '\1\3')
+test_ok($x == "AC\nAC\n")
+
+test_ok("foobar" =~ /foo(?=(bar)|(baz))/)
+test_ok("foobaz" =~ /foo(?=(bar)|(baz))/)
+
+$foo = "abc"
+test_ok("#$foo = abc" == "abc = abc")
+test_ok("#{$foo} = abc" == "abc = abc")
+
+foo = "abc"
+test_ok("#{foo} = abc" == "abc = abc")
+
+test_ok('-' * 5 == '-----')
+test_ok('-' * 1 == '-')
+test_ok('-' * 0 == '')
+
+foo = '-'
+test_ok(foo * 5 == '-----')
+test_ok(foo * 1 == '-')
+test_ok(foo * 0 == '')
+
+$x = "a.gif"
+test_ok($x.sub(/.*\.([^\.]+)$/, '\1') == "gif")
+test_ok($x.sub(/.*\.([^\.]+)$/, 'b.\1') == "b.gif")
+test_ok($x.sub(/.*\.([^\.]+)$/, '\2') == "")
+test_ok($x.sub(/.*\.([^\.]+)$/, 'a\2b') == "ab")
+test_ok($x.sub(/.*\.([^\.]+)$/, '<\&>') == "<a.gif>")
+
+# character constants(assumes ASCII)
+test_ok("a"[0] == ?a)
+test_ok(?a == ?a)
+test_ok(?\C-a == "\1")
+test_ok(?\M-a == "\341")
+test_ok(?\M-\C-a == "\201")
+test_ok("a".upcase![0] == ?A)
+test_ok("A".downcase![0] == ?a)
+test_ok("abc".tr!("a-z", "A-Z") == "ABC")
+test_ok("aabbcccc".tr_s!("a-z", "A-Z") == "ABC")
+test_ok("abcc".squeeze!("a-z") == "abc")
+test_ok("abcd".delete!("bc") == "ad")
+
+$x = "abcdef"
+$y = [ ?a, ?b, ?c, ?d, ?e, ?f ]
+$bad = false
+$x.each_byte {|i|
+  if i.chr != $y.shift
+    $bad = true
+    break
+  end
+}
+test_ok(!$bad)
+
+s = "a string"
+s[0..s.size]="another string"
+test_ok(s == "another string")
+
+s = <<EOS
+#{
+[1,2,3].join(",")
+}
+EOS
+test_ok(s == "1,2,3\n")
+test_ok("Just".to_i(36) == 926381)
+test_ok("-another".to_i(36) == -23200231779)
+test_ok(1299022.to_s(36) == "ruby")
+test_ok(-1045307475.to_s(36) == "-hacker")
+test_ok("Just_another_Ruby_hacker".to_i(36) == 265419172580680477752431643787347)
+test_ok(-265419172580680477752431643787347.to_s(36) == "-justanotherrubyhacker")
+
+a = []
+(0..255).each {|n|
+  ch = [n].pack("C")
+  a.push ch if /a#{Regexp.quote ch}b/x =~ "ab"
+}
+test_ok(a.size == 0)
+
+test_check "assignment"
+a = nil
+test_ok(defined?(a))
+test_ok(a == nil)
+
+# multiple assignment
+a, b = 1, 2
+test_ok(a == 1 && b == 2)
+
+a, b = b, a
+test_ok(a == 2 && b == 1)
+
+a, = 1,2
+test_ok(a == 1)
+
+a, *b = 1, 2, 3
+test_ok(a == 1 && b == [2, 3])
+
+a, (b, c), d = 1, [2, 3], 4
+test_ok(a == 1 && b == 2 && c == 3 && d == 4)
+
+*a = 1, 2, 3
+test_ok(a == [1, 2, 3])
+
+*a = 4
+test_ok(a == [4])
+
+*a = nil
+test_ok(a == [nil])
+
+test_check "call"
+def aaa(a, b=100, *rest)
+  res = [a, b]
+  res += rest if rest
+  return res
+end
+
+# not enough argument
+begin
+  aaa()				# need at least 1 arg
+  test_ok(false)
+rescue
+  test_ok(true)
+end
+
+begin
+  aaa				# no arg given (exception raised)
+  test_ok(false)
+rescue
+  test_ok(true)
+end
+
+test_ok(aaa(1) == [1, 100])
+test_ok(aaa(1, 2) == [1, 2])
+test_ok(aaa(1, 2, 3, 4) == [1, 2, 3, 4])
+test_ok(aaa(1, *[2, 3, 4]) == [1, 2, 3, 4])
+
+test_check "proc"
+$proc = Proc.new{|i| i}
+test_ok($proc.call(2) == 2)
+test_ok($proc.call(3) == 3)
+
+$proc = Proc.new{|i| i*2}
+test_ok($proc.call(2) == 4)
+test_ok($proc.call(3) == 6)
+
+Proc.new{
+  iii=5				# nested local variable
+  $proc = Proc.new{|i|
+    iii = i
+  }
+  $proc2 = Proc.new {
+    $x = iii			# nested variables shared by procs
+  }
+  # scope of nested variables
+  test_ok(defined?(iii))
+}.call
+test_ok(!defined?(iii))		# out of scope
+
+loop{iii=5; test_ok(eval("defined? iii")); break}
+loop {
+  iii = 10
+  def dyna_var_check
+    loop {
+      test_ok(!defined?(iii))
+      break
+    }
+  end
+  dyna_var_check
+  break
+}
+$x=0
+$proc.call(5)
+$proc2.call
+test_ok($x == 5)
+
+if defined? Process.kill
+  test_check "signal"
+
+  $x = 0
+  trap "SIGINT", Proc.new{|sig| $x = 2}
+  Process.kill "SIGINT", $$
+  100.times {
+    sleep 0.1
+    break if $x != 0
+  }
+  test_ok($x == 2)
+
+  trap "SIGINT", Proc.new{raise "Interrupt"}
+
+  x = false
+  begin
+    Process.kill "SIGINT", $$
+    sleep 0.1
+  rescue
+    x = $!
+  end
+  test_ok(x && /Interrupt/ =~ x.message)
+end
+
+test_check "eval"
+test_ok(eval("") == nil)
+$bad=false
+eval 'while false; $bad = true; print "foo\n" end'
+test_ok(!$bad)
+
+test_ok(eval('Object'))
+test_ok(eval('true'))
+test_ok(!eval('nil'))
+test_ok(!eval('false'))
+
+$foo = 'test_ok(true)'
+begin
+  eval $foo
+rescue
+  test_ok(false)
+end
+
+test_ok(eval("$foo") == 'test_ok(true)')
+test_ok(eval("true") == true)
+i = 5
+test_ok(eval("i == 5"))
+test_ok(eval("i") == 5)
+test_ok(eval("defined? i"))
+
+# eval with binding
+def test_ev
+  local1 = "local1"
+  lambda {
+    local2 = "local2"
+    return binding
+  }.call
+end
+
+$x = test_ev
+test_ok(eval("local1", $x) == "local1") # normal local var
+test_ok(eval("local2", $x) == "local2") # nested local var
+$bad = true
+begin
+  p eval("local1")
+rescue NameError		# must raise error
+  $bad = false
+end
+test_ok(!$bad)
+
+module EvTest
+  EVTEST1 = 25
+  evtest2 = 125
+  $x = binding
+end
+test_ok(eval("EVTEST1", $x) == 25)	# constant in module
+test_ok(eval("evtest2", $x) == 125)	# local var in module
+$bad = true
+begin
+  eval("EVTEST1")
+rescue NameError		# must raise error
+  $bad = false
+end
+test_ok(!$bad)
+
+x = binding #! YARV Limitation: Proc.new{}
+eval "i4 = 1", x
+test_ok(eval("i4", x) == 1)
+x = Proc.new{binding}.call #! YARV Limitation: Proc.new{Proc.new{}}.call
+eval "i4 = 22", x
+test_ok(eval("i4", x) == 22)
+$x = []
+x = Proc.new{binding}.call #! YARV Limitation: Proc.new{Proc.new{}}.call
+eval "(0..9).each{|i5| $x[i5] = Proc.new{i5*2}}", x
+test_ok($x[4].call == 8)
+
+x = binding
+eval "i = 1", x
+test_ok(eval("i", x) == 1)
+x = Proc.new{binding}.call
+eval "i = 22", x
+test_ok(eval("i", x) == 22)
+$x = []
+x = Proc.new{binding}.call
+eval "(0..9).each{|i5| $x[i5] = Proc.new{i5*2}}", x
+test_ok($x[4].call == 8)
+x = Proc.new{binding}.call
+eval "for i6 in 1..1; j6=i6; end", x
+test_ok(eval("defined? i6", x))
+test_ok(eval("defined? j6", x))
+
+Proc.new {
+  p = binding
+  eval "foo11 = 1", p
+  foo22 = 5
+  Proc.new{foo11=22}.call
+  Proc.new{foo22=55}.call
+  test_ok(eval("foo11", p) == eval("foo11"))
+  test_ok(eval("foo11") == 1)
+  test_ok(eval("foo22", p) == eval("foo22"))
+  test_ok(eval("foo22") == 55)
+}.call if false #! YARV Limitation
+
+#! YARV Limitation: p1 = Proc.new{i7 = 0; Proc.new{i7}}.call
+p1 = Proc.new{i7 = 0; binding}.call
+#! YARV Limitation: test_ok(p1.call == 0)
+eval "i7=5", p1
+#! YARV Limitation: test_ok(p1.call == 5)
+test_ok(!defined?(i7))
+
+if false #! YARV Limitation
+p1 = Proc.new{i7 = 0; Proc.new{i7}}.call
+i7 = nil
+test_ok(p1.call == 0)
+eval "i7=1", p1
+test_ok(p1.call == 1)
+eval "i7=5", p1
+test_ok(p1.call == 5)
+test_ok(i7 == nil)
+end
+
+test_check "system"
+test_ok(`echo foobar` == "foobar\n")
+test_ok(`./miniruby -e 'print "foobar"'` == 'foobar')
+
+script_tmp = "script_tmp.#{$$}"
+tmp = open(script_tmp, "w")
+tmp.print "print $zzz\n";
+tmp.close
+
+test_ok(`./miniruby -s #{script_tmp} -zzz` == 'true')
+test_ok(`./miniruby -s #{script_tmp} -zzz=555` == '555')
+
+tmp = open(script_tmp, "w")
+tmp.print "#! /usr/local/bin/ruby -s\n";
+tmp.print "print $zzz\n";
+tmp.close
+
+test_ok(`./miniruby #{script_tmp} -zzz=678` == '678')
+
+tmp = open(script_tmp, "w")
+tmp.print "this is a leading junk\n";
+tmp.print "#! /usr/local/bin/ruby -s\n";
+tmp.print "print $zzz\n";
+tmp.print "__END__\n";
+tmp.print "this is a trailing junk\n";
+tmp.close
+
+test_ok(`./miniruby -x #{script_tmp}` == '')
+test_ok(`./miniruby -x #{script_tmp} -zzz=555` == '555')
+
+tmp = open(script_tmp, "w")
+for i in 1..5
+  tmp.print i, "\n"
+end
+tmp.close
+
+`./miniruby -i.bak -pe '$_.sub!(/^[0-9]+$/){$&.to_i * 5}' #{script_tmp}`
+done = true
+tmp = open(script_tmp, "r")
+while tmp.gets
+  if $_.to_i % 5 != 0
+    done = false
+    break
+  end
+end
+tmp.close
+test_ok(done)
+
+File.unlink script_tmp or `/bin/rm -f "#{script_tmp}"`
+File.unlink "#{script_tmp}.bak" or `/bin/rm -f "#{script_tmp}.bak"`
+
+test_check "const"
+TEST1 = 1
+TEST2 = 2
+
+module Const
+  TEST3 = 3
+  TEST4 = 4
+end
+
+module Const2
+  TEST3 = 6
+  TEST4 = 8
+end
+
+include Const
+
+test_ok([TEST1,TEST2,TEST3,TEST4] == [1,2,3,4])
+
+include Const2
+STDERR.print "intentionally redefines TEST3, TEST4\n" if $VERBOSE
+test_ok([TEST1,TEST2,TEST3,TEST4] == [1,2,6,8])
+
+
+test_ok((String <=> Object) == -1)
+test_ok((Object <=> String) == 1)
+test_ok((Array <=> String) == nil)
+
+test_check "clone"
+foo = Object.new
+def foo.test
+  "test"
+end
+bar = foo.clone
+def bar.test2
+  "test2"
+end
+
+test_ok(bar.test2 == "test2")
+test_ok(bar.test == "test")
+test_ok(foo.test == "test")
+
+begin
+  foo.test2
+  test_ok false
+rescue NoMethodError
+  test_ok true
+end
+
+module M001; end
+module M002; end
+module M003; include M002; end
+module M002; include M001; end
+module M003; include M002; end
+
+test_ok(M003.ancestors == [M003, M002, M001])
+
+test_check "marshal"
+$x = [1,2,3,[4,5,"foo"],{1=>"bar"},2.5,fact(30)]
+$y = Marshal.dump($x)
+test_ok($x == Marshal.load($y))
+
+StrClone=String.clone;
+test_ok(Marshal.load(Marshal.dump(StrClone.new("abc"))).class == StrClone)
+
+[[1,2,3,4], [81, 2, 118, 3146]].each { |w,x,y,z|
+  a = (x.to_f + y.to_f / z.to_f) * Math.exp(w.to_f / (x.to_f + y.to_f / z.to_f))
+  ma = Marshal.dump(a)
+  b = Marshal.load(ma)
+  test_ok(a == b)
+}
+
+test_check "pack"
+
+$format = "c2x5CCxsdils_l_a6";
+# Need the expression in here to force ary[5] to be numeric.  This avoids
+# test2 failing because ary2 goes str->numeric->str and ary does not.
+ary = [1,-100,127,128,32767,987.654321098 / 100.0,12345,123456,-32767,-123456,"abcdef"]
+$x = ary.pack($format)
+ary2 = $x.unpack($format)
+
+test_ok(ary.length == ary2.length)
+test_ok(ary.join(':') == ary2.join(':'))
+test_ok($x =~ /def/)
+
+$x = [-1073741825]
+test_ok($x.pack("q").unpack("q") == $x)
+
+test_check "math"
+test_ok(Math.sqrt(4) == 2)
+
+include Math
+test_ok(sqrt(4) == 2)
+
+test_check "struct"
+struct_test = Struct.new("Test", :foo, :bar)
+test_ok(struct_test == Struct::Test)
+
+test = struct_test.new(1, 2)
+test_ok(test.foo == 1 && test.bar == 2)
+test_ok(test[0] == 1 && test[1] == 2)
+
+a, b = test.to_a
+test_ok(a == 1 && b == 2)
+
+test[0] = 22
+test_ok(test.foo == 22)
+
+test.bar = 47
+test_ok(test.bar == 47)
+
+test_check "variable"
+test_ok($$.instance_of?(Integer))
+
+# read-only variable
+begin
+  $$ = 5
+  test_ok false
+rescue NameError
+  test_ok true
+end
+
+foobar = "foobar"
+$_ = foobar
+test_ok($_ == foobar)
+
+class Gods
+  @@rule = "Uranus"
+  def ruler0
+    @@rule
+  end
+
+  def self.ruler1		# <= per method definition style
+    @@rule
+  end
+  class << self			# <= multiple method definition style
+    def ruler2
+      @@rule
+    end
+  end
+end
+
+module Olympians
+  @@rule ="Zeus"
+  def ruler3
+    @@rule
+  end
+end
+
+class Titans < Gods
+  @@rule = "Cronus"		# modifies @@rule in Gods
+  include Olympians
+  def ruler4
+    @@rule
+  end
+end
+
+test_ok(Gods.new.ruler0 == "Cronus")
+test_ok(Gods.ruler1 == "Cronus")
+test_ok(Gods.ruler2 == "Cronus")
+test_ok(Titans.ruler1 == "Cronus")
+test_ok(Titans.ruler2 == "Cronus")
+atlas = Titans.new
+test_ok(atlas.ruler0 == "Cronus")
+test_ok(atlas.ruler3 == "Zeus")
+begin
+  atlas.ruler4
+rescue RuntimeError => e
+  test_ok(e.message.include?("class variable @@rule of Olympians is overtaken by Gods"))
+else
+  test_ok(false)
+end
+test_ok(atlas.ruler3 == "Zeus")
+
+test_check "trace"
+$x = 1234
+$y = 0
+trace_var :$x, Proc.new{$y = $x}
+$x = 40414
+test_ok($y == $x)
+
+untrace_var :$x
+$x = 19660208
+test_ok($y != $x)
+
+trace_var :$x, Proc.new{$x *= 2}
+$x = 5
+test_ok($x == 10)
+
+untrace_var :$x
+
+test_check "defined?"
+
+test_ok(defined?($x))		# global variable
+test_ok(defined?($x) == 'global-variable')# returns description
+
+foo=5
+test_ok(defined?(foo))		# local variable
+
+test_ok(defined?(Array))	# constant
+test_ok(defined?(Object.new))	# method
+test_ok(!defined?(Object.print))# private method
+test_ok(defined?(1 == 2))	# operator expression
+
+class Foo
+  def foo
+    p :foo
+  end
+  protected :foo
+  def bar(f)
+    test_ok(defined?(self.foo))
+    test_ok(defined?(f.foo))
+  end
+end
+f = Foo.new
+test_ok(defined?(f.foo) == nil)
+f.bar(f)
+
+def defined_test
+  return !defined?(yield)
+end
+
+test_ok(defined_test)		# not iterator
+test_ok(!defined_test{})	# called as iterator
+
+test_check "alias"
+class Alias0
+  def foo; "foo" end
+end
+class Alias1 < Alias0
+  alias bar foo
+  def foo; "foo+" + super end
+end
+class Alias2 < Alias1
+  alias baz foo
+  undef foo
+end
+
+x = Alias2.new
+test_ok(x.bar == "foo")
+test_ok(x.baz == "foo+foo")
+
+# test_check for cache
+test_ok(x.baz == "foo+foo")
+
+class Alias3 < Alias2
+  def foo
+    defined? super
+  end
+  def bar
+    defined? super
+  end
+  def quux
+    defined? super
+  end
+end
+x = Alias3.new
+test_ok(!x.foo)
+test_ok(x.bar)
+test_ok(!x.quux)
+
+test_check "path"
+test_ok(File.basename("a") == "a")
+test_ok(File.basename("a/b") == "b")
+test_ok(File.basename("a/b/") == "b")
+test_ok(File.basename("/") == "/")
+test_ok(File.basename("//") == "/")
+test_ok(File.basename("///") == "/")
+test_ok(File.basename("a/b////") == "b")
+test_ok(File.basename("a.rb", ".rb") == "a")
+test_ok(File.basename("a.rb///", ".rb") == "a")
+test_ok(File.basename("a.rb///", ".*") == "a")
+test_ok(File.basename("a.rb///", ".c") == "a.rb")
+test_ok(File.dirname("a") == ".")
+test_ok(File.dirname("/") == "/")
+test_ok(File.dirname("/a") == "/")
+test_ok(File.dirname("a/b") == "a")
+test_ok(File.dirname("a/b/c") == "a/b")
+test_ok(File.dirname("/a/b/c") == "/a/b")
+test_ok(File.dirname("/a/b/") == "/a")
+test_ok(File.dirname("/a/b///") == "/a")
+case Dir.pwd
+when %r'\A\w:'
+  test_ok(/\A\w:\/\z/ =~ File.expand_path(".", "/"))
+  test_ok(/\A\w:\/a\z/ =~ File.expand_path("a", "/"))
+  dosish = true
+when %r'\A//'
+  test_ok(%r'\A//[^/]+/[^/]+\z' =~ File.expand_path(".", "/"))
+  test_ok(%r'\A//[^/]+/[^/]+/a\z' =~ File.expand_path(".", "/"))
+  dosish = true
+else
+  test_ok(File.expand_path(".", "/") == "/")
+  test_ok(File.expand_path("sub", "/") == "/sub")
+end
+if dosish
+  test_ok(File.expand_path("/", "//machine/share/sub") == "//machine/share")
+  test_ok(File.expand_path("/dir", "//machine/share/sub") == "//machine/share/dir")
+  test_ok(File.expand_path("/", "z:/sub") == "z:/")
+  test_ok(File.expand_path("/dir", "z:/sub") == "z:/dir")
+end
+test_ok(File.expand_path(".", "//") == "//")
+test_ok(File.expand_path("sub", "//") == "//sub")
+
+# test_check "Proc#binding"
+ObjectSpace.each_object(Proc){|o|
+  begin
+    b = o.binding
+    eval 'self', b
+  rescue ArgumentError
+  end
+}
+
+test_check "gc"
+begin
+  1.upto(10000) {
+    tmp = [0,1,2,3,4,5,6,7,8,9]
+  }
+  tmp = nil
+  test_ok true
+rescue
+  test_ok false
+end
+class S
+  def initialize(a)
+    @a = a
+  end
+end
+l=nil
+100000.times {
+  l = S.new(l)
+}
+GC.start
+test_ok true   # reach here or dumps core
+l = []
+100000.times {
+  l.push([l])
+}
+GC.start
+test_ok true   # reach here or dumps core
+
+ObjectSpace.each_object{|o|
+  o.class.name
+}
+
+test_ok true   # reach here or dumps core
+
+PROGRESS.finish
+if $failed > 0
+  printf "not ok/test: %d failed %d\n", $ntest, $failed
+else
+  printf "end of test(test: %d)\n", $ntest
+end
diff --git a/benchmark/README.md b/benchmark/README.md
new file mode 100644
index 0000000000..39a5aa139b
--- /dev/null
+++ b/benchmark/README.md
@@ -0,0 +1,72 @@
+# ruby/benchmark
+
+This directory has benchmark definitions to be run with
+[benchmark\_driver.gem](https://github.com/benchmark-driver/benchmark-driver).
+
+## Normal usage
+
+Execute `gem install benchmark_driver` and run a command like:
+
+```bash
+# Run a benchmark script with the ruby in the $PATH
+benchmark-driver benchmark/app_fib.rb
+
+# Run benchmark scripts with multiple Ruby executables or options
+benchmark-driver benchmark/*.rb -e /path/to/ruby -e '/path/to/ruby --jit'
+
+# Or compare Ruby versions managed by rbenv
+benchmark-driver benchmark/*.rb --rbenv '2.5.1;2.6.0-preview2 --jit'
+
+# You can collect many metrics in many ways
+benchmark-driver benchmark/*.rb --runner memory --output markdown
+
+# Some are defined with YAML for complex setup or accurate measurement
+benchmark-driver benchmark/*.yml
+```
+
+See also:
+
+```console
+Usage: benchmark-driver [options] RUBY|YAML...
+    -r, --runner TYPE                Specify runner type: ips, time, memory, once (default: ips)
+    -o, --output TYPE                Specify output type: compare, simple, markdown, record (default: compare)
+    -e, --executables EXECS          Ruby executables (e1::path1 arg1; e2::path2 arg2;...)
+        --rbenv VERSIONS             Ruby executables in rbenv (x.x.x arg1;y.y.y arg2;...)
+        --repeat-count NUM           Try benchmark NUM times and use the fastest result or the worst memory usage
+        --repeat-result TYPE         Yield "best", "average" or "worst" result with --repeat-count (default: best)
+        --bundler                    Install and use gems specified in Gemfile
+        --filter REGEXP              Filter out benchmarks with given regexp
+        --run-duration SECONDS       Warmup estimates loop_count to run for this duration (default: 3)
+    -v, --verbose                    Verbose mode. Multiple -v options increase visilibity (max: 2)
+```
+
+## make benchmark
+
+Using `make benchmark`, `make update-benchmark-driver` automatically downloads
+the supported version of benchmark\_driver, and it runs benchmarks with the downloaded
+benchmark\_driver.
+
+```bash
+# Run all benchmarks with the ruby in the $PATH and the built ruby
+make benchmark
+
+# Or compare with specific ruby binary
+make benchmark COMPARE_RUBY="/path/to/ruby --jit"
+
+# Run vm benchmarks
+make benchmark ITEM=vm
+
+# Run some limited benchmarks in ITEM-matched files
+make benchmark ITEM=vm OPTS=--filter=block
+
+# You can specify the benchmark by an exact filename instead of using the default argument:
+# ARGS = $$(find $(srcdir)/benchmark -maxdepth 1 -name '*$(ITEM)*.yml' -o -name '*$(ITEM)*.rb')
+make benchmark ARGS=benchmark/erb_render.yml
+
+# You can specify any option via $OPTS
+make benchmark OPTS="--help"
+
+# With `make benchmark`, some special runner plugins are available:
+#   -r peak, -r size, -r total, -r utime, -r stime, -r cutime, -r cstime
+make benchmark ITEM=vm_bigarray OPTS="-r peak"
+```
diff --git a/benchmark/bm_app_answer.rb b/benchmark/app_answer.rb
index 3cd8a8fd37..3cd8a8fd37 100644
--- a/benchmark/bm_app_answer.rb
+++ b/benchmark/app_answer.rb
diff --git a/benchmark/app_aobench.rb b/benchmark/app_aobench.rb
new file mode 100644
index 0000000000..16296af12b
--- /dev/null
+++ b/benchmark/app_aobench.rb
@@ -0,0 +1,297 @@
+# coding: US-ASCII
+
+# AO render benchmark
+# Original program (C) Syoyo Fujita in Javascript (and other languages)
+#      https://code.google.com/p/aobench/
+# Ruby(yarv2llvm) version by Hideki Miura
+#
+
+IMAGE_WIDTH = 256
+IMAGE_HEIGHT = 256
+NSUBSAMPLES = 2
+NAO_SAMPLES = 8
+
+srand(0)
+
+class Vec
+  def initialize(x, y, z)
+    @x = x
+    @y = y
+    @z = z
+  end
+
+  attr_accessor :x, :y, :z
+
+  def vadd(b)
+    Vec.new(@x + b.x, @y + b.y, @z + b.z)
+  end
+
+  def vsub(b)
+    Vec.new(@x - b.x, @y - b.y, @z - b.z)
+  end
+
+  def vcross(b)
+    Vec.new(@y * b.z - @z * b.y,
+            @z * b.x - @x * b.z,
+            @x * b.y - @y * b.x)
+  end
+
+  def vdot(b)
+    @x * b.x + @y * b.y + @z * b.z
+  end
+
+  def vlength
+    Math.sqrt(@x * @x + @y * @y + @z * @z)
+  end
+
+  def vnormalize
+    len = vlength
+    v = Vec.new(@x, @y, @z)
+    if len > 1.0e-17 then
+      v.x = v.x / len
+      v.y = v.y / len
+      v.z = v.z / len
+    end
+    v
+  end
+end
+
+
+class Sphere
+  def initialize(center, radius)
+    @center = center
+    @radius = radius
+  end
+
+  attr_reader :center, :radius
+
+  def intersect(ray, isect)
+    rs = ray.org.vsub(@center)
+    b = rs.vdot(ray.dir)
+    c = rs.vdot(rs) - (@radius * @radius)
+    d = b * b - c
+    if d > 0.0 then
+      t = - b - Math.sqrt(d)
+
+      if t > 0.0 and t < isect.t then
+        isect.t = t
+        isect.hit = true
+        isect.pl = Vec.new(ray.org.x + ray.dir.x * t,
+                          ray.org.y + ray.dir.y * t,
+                          ray.org.z + ray.dir.z * t)
+        n = isect.pl.vsub(@center)
+        isect.n = n.vnormalize
+      else
+        0.0
+      end
+    end
+    nil
+  end
+end
+
+class Plane
+  def initialize(p, n)
+    @p = p
+    @n = n
+  end
+
+  def intersect(ray, isect)
+    d = -@p.vdot(@n)
+    v = ray.dir.vdot(@n)
+    v0 = v
+    if v < 0.0 then
+      v0 = -v
+    end
+    if v0 < 1.0e-17 then
+      return
+    end
+
+    t = -(ray.org.vdot(@n) + d) / v
+
+    if t > 0.0 and t < isect.t then
+      isect.hit = true
+      isect.t = t
+      isect.n = @n
+      isect.pl = Vec.new(ray.org.x + t * ray.dir.x,
+                        ray.org.y + t * ray.dir.y,
+                        ray.org.z + t * ray.dir.z)
+    end
+    nil
+  end
+end
+
+class Ray
+  def initialize(org, dir)
+    @org = org
+    @dir = dir
+  end
+
+  attr_accessor :org, :dir
+end
+
+class Isect
+  def initialize
+    @t = 10000000.0
+    @hit = false
+    @pl = Vec.new(0.0, 0.0, 0.0)
+    @n = Vec.new(0.0, 0.0, 0.0)
+  end
+
+  attr_accessor :t, :hit, :pl, :n
+end
+
+def clamp(f)
+  i = f * 255.5
+  if i > 255.0 then
+    i = 255.0
+  end
+  if i < 0.0 then
+    i = 0.0
+  end
+  i.to_i
+end
+
+def otherBasis(basis, n)
+  basis[2] = Vec.new(n.x, n.y, n.z)
+  basis[1] = Vec.new(0.0, 0.0, 0.0)
+
+  if n.x < 0.6 and n.x > -0.6 then
+    basis[1].x = 1.0
+  elsif n.y < 0.6 and n.y > -0.6 then
+    basis[1].y = 1.0
+  elsif n.z < 0.6 and n.z > -0.6 then
+    basis[1].z = 1.0
+  else
+    basis[1].x = 1.0
+  end
+
+  basis[0] = basis[1].vcross(basis[2])
+  basis[0] = basis[0].vnormalize
+
+  basis[1] = basis[2].vcross(basis[0])
+  basis[1] = basis[1].vnormalize
+end
+
+class Scene
+  def initialize
+    @spheres = Array.new
+    @spheres[0] = Sphere.new(Vec.new(-2.0, 0.0, -3.5), 0.5)
+    @spheres[1] = Sphere.new(Vec.new(-0.5, 0.0, -3.0), 0.5)
+    @spheres[2] = Sphere.new(Vec.new(1.0, 0.0, -2.2), 0.5)
+    @plane = Plane.new(Vec.new(0.0, -0.5, 0.0), Vec.new(0.0, 1.0, 0.0))
+  end
+
+  def ambient_occlusion(isect)
+    basis = Array.new
+    otherBasis(basis, isect.n)
+
+    ntheta    = NAO_SAMPLES
+    nphi      = NAO_SAMPLES
+    eps       = 0.0001
+    occlusion = 0.0
+
+    p0 = Vec.new(isect.pl.x + eps * isect.n.x,
+                isect.pl.y + eps * isect.n.y,
+                isect.pl.z + eps * isect.n.z)
+    nphi.times do |j|
+      ntheta.times do |i|
+        r = rand
+        phi = 2.0 * 3.14159265 * rand
+        x = Math.cos(phi) * Math.sqrt(1.0 - r)
+        y = Math.sin(phi) * Math.sqrt(1.0 - r)
+        z = Math.sqrt(r)
+
+        rx = x * basis[0].x + y * basis[1].x + z * basis[2].x
+        ry = x * basis[0].y + y * basis[1].y + z * basis[2].y
+        rz = x * basis[0].z + y * basis[1].z + z * basis[2].z
+
+        raydir = Vec.new(rx, ry, rz)
+        ray = Ray.new(p0, raydir)
+
+        occisect = Isect.new
+        @spheres[0].intersect(ray, occisect)
+        @spheres[1].intersect(ray, occisect)
+        @spheres[2].intersect(ray, occisect)
+        @plane.intersect(ray, occisect)
+        if occisect.hit then
+          occlusion = occlusion + 1.0
+        else
+          0.0
+        end
+      end
+    end
+
+    occlusion = (ntheta.to_f * nphi.to_f - occlusion) / (ntheta.to_f * nphi.to_f)
+
+    Vec.new(occlusion, occlusion, occlusion)
+  end
+
+  def render(w, h, nsubsamples)
+    cnt = 0
+    nsf = nsubsamples.to_f
+    h.times do |y|
+      w.times do |x|
+        rad = Vec.new(0.0, 0.0, 0.0)
+
+        # Subsampling
+        nsubsamples.times do |v|
+          nsubsamples.times do |u|
+
+            cnt = cnt + 1
+            wf = w.to_f
+            hf = h.to_f
+            xf = x.to_f
+            yf = y.to_f
+            uf = u.to_f
+            vf = v.to_f
+
+            px = (xf + (uf / nsf) - (wf / 2.0)) / (wf / 2.0)
+            py = -(yf + (vf / nsf) - (hf / 2.0)) / (hf / 2.0)
+
+            eye = Vec.new(px, py, -1.0).vnormalize
+
+            ray = Ray.new(Vec.new(0.0, 0.0, 0.0), eye)
+
+            isect = Isect.new
+            @spheres[0].intersect(ray, isect)
+            @spheres[1].intersect(ray, isect)
+            @spheres[2].intersect(ray, isect)
+            @plane.intersect(ray, isect)
+            if isect.hit then
+              col = ambient_occlusion(isect)
+              rad.x = rad.x + col.x
+              rad.y = rad.y + col.y
+              rad.z = rad.z + col.z
+            end
+          end
+        end
+
+        r = rad.x / (nsf * nsf)
+        g = rad.y / (nsf * nsf)
+        b = rad.z / (nsf * nsf)
+        printf("%c", clamp(r))
+        printf("%c", clamp(g))
+        printf("%c", clamp(b))
+      end
+      nil
+    end
+
+    nil
+  end
+end
+
+alias printf_orig printf
+def printf *args
+  # $fp.printf(*args)
+end
+
+# File.open("ao.ppm", "w") do |fp|
+  # $fp = fp
+  printf("P6\n")
+  printf("%d %d\n", IMAGE_WIDTH, IMAGE_HEIGHT)
+  printf("255\n")
+  Scene.new.render(IMAGE_WIDTH, IMAGE_HEIGHT, NSUBSAMPLES)
+# end
+
+undef printf
+alias printf printf_orig
diff --git a/benchmark/app_erb.yml b/benchmark/app_erb.yml
new file mode 100644
index 0000000000..31e29b7644
--- /dev/null
+++ b/benchmark/app_erb.yml
@@ -0,0 +1,23 @@
+#
+# Create many HTML strings with ERB.
+#
+prelude: |
+  require 'erb'
+
+  data = <<erb
+  <html>
+    <head> <%= title %> </head>
+    <body>
+      <h1> <%= title %> </h1>
+      <p>
+        <%= content %>
+      </p>
+    </body>
+  </html>
+  erb
+
+  title = "hello world!"
+  content = "hello world!\n" * 10
+benchmark:
+  app_erb: ERB.new(data).result(binding)
+loop_count: 15000
diff --git a/benchmark/app_factorial.rb b/benchmark/app_factorial.rb
new file mode 100644
index 0000000000..45f471dfdb
--- /dev/null
+++ b/benchmark/app_factorial.rb
@@ -0,0 +1,11 @@
+def fact(n)
+  if(n > 1)
+    n * fact(n-1)
+  else
+    1
+  end
+end
+
+100.times {
+  fact(5000)
+}
diff --git a/benchmark/bm_app_fib.rb b/benchmark/app_fib.rb
index 34a7b2e725..34a7b2e725 100644
--- a/benchmark/bm_app_fib.rb
+++ b/benchmark/app_fib.rb
diff --git a/benchmark/app_lc_fizzbuzz.rb b/benchmark/app_lc_fizzbuzz.rb
new file mode 100644
index 0000000000..f09574bbeb
--- /dev/null
+++ b/benchmark/app_lc_fizzbuzz.rb
@@ -0,0 +1,52 @@
+#
+# FizzBuzz program using only lambda calculus
+#
+# This program is quoted from
+#   "Understanding Computation" by Tom Stuart
+#   http://computationbook.com/
+#
+# You can understand why this program works fine by reading this book.
+#
+
+solution = -> k { -> f { -> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> l { -> x { -> g { -> b { b }[-> p { p[-> x { -> y { x } }] }[l]][x][-> y { g[f[-> l { -> p { p[-> x { -> y { y } }] }[-> p { p[-> x { -> y { y } }] }[l]] }[l]][x][g]][-> l { -> p { p[-> x { -> y { x } }] }[-> p { p[-> x { -> y { y } }] }[l]] }[l]][y] }] } } } }][k][-> x { -> y { -> f { f[x][y] } } }[-> x { -> y { x } }][-> x { -> y { x } }]][-> l { -> x { -> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[l][f[x]] } }] } }[-> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> m { -> n { -> b { b }[-> m { -> n { -> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]] } }[m][n]][-> x { -> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[f[-> n { -> p { -> x { p[n[p][x]] } } }[m]][n]][m][x] }][-> x { -> y { -> f { f[x][y] } } }[-> x { -> y { x } }][-> x { -> y { x } }]] } } }][-> p { -> x { p[x] } }][-> p { -> x { p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[x]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] } }]][-> n { -> b { b }[-> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> m { -> n { -> b { b }[-> m { -> n { -> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]] } }[n][m]][-> x { f[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]][n][x] }][m] } } }][n][-> p { -> x { p[p[p[p[p[p[p[p[p[p[p[p[p[p[p[x]]]]]]]]]]]]]]] } }]]][-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> x { -> y { -> f { f[x][y] } } }[-> x { -> y { x } }][-> x { -> y { x } }]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]][-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]][-> b { b }[-> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> m { -> n { -> b { b }[-> m { -> n { -> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]] } }[n][m]][-> x { f[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]][n][x] }][m] } } }][n][-> p { -> x { p[p[p[x]]] } }]]][-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> x { -> y { -> f { f[x][y] } } }[-> x { -> y { x } }][-> x { -> y { x } }]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]][-> b { b }[-> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> m { -> n { -> b { b }[-> m { -> n { -> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]] } }[n][m]][-> x { f[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]][n][x] }][m] } } }][n][-> p { -> x { p[p[p[p[p[x]]]]] } }]]][-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> x { -> y { -> f { f[x][y] } } }[-> x { -> y { x } }][-> x { -> y { x } }]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]]][-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> n { -> p { -> x { p[n[p][x]] } } }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]]]][-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]][-> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> n { -> l { -> x { -> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> l { -> x { -> g { -> b { b }[-> p { p[-> x { -> y { x } }] }[l]][x][-> y { g[f[-> l { -> p { p[-> x { -> y { y } }] }[-> p { p[-> x { -> y { y } }] }[l]] }[l]][x][g]][-> l { -> p { p[-> x { -> y { x } }] }[-> p { p[-> x { -> y { y } }] }[l]] }[l]][y] }] } } } }][l][-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }[-> x { -> y { -> f { f[x][y] } } }[-> x { -> y { x } }][-> x { -> y { x } }]][x]][-> l { -> x { -> x { -> y { -> f { f[x][y] } } }[-> x { -> y { y } }][-> x { -> y { -> f { f[x][y] } } }[x][l]] } }] } }[-> b { b }[-> m { -> n { -> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]] } }[n][-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }[-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]]][-> x { -> y { -> f { f[x][y] } } }[-> x { -> y { x } }][-> x { -> y { x } }]][-> x { f[-> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> m { -> n { -> b { b }[-> m { -> n { -> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]] } }[n][m]][-> x { -> n { -> p { -> x { p[n[p][x]] } } }[f[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]][n]][x] }][-> p { -> x { x } }] } } }][n][-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]][x] }]][-> f { -> x { f[-> y { x[x][y] }] }[-> x { f[-> y { x[x][y] }] }] }[-> f { -> m { -> n { -> b { b }[-> m { -> n { -> n { n[-> x { -> x { -> y { y } } }][-> x { -> y { x } }] }[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]] } }[n][m]][-> x { f[-> m { -> n { n[-> n { -> p { p[-> x { -> y { x } }] }[n[-> p { -> x { -> y { -> f { f[x][y] } } }[-> p { p[-> x { -> y { y } }] }[p]][-> n { -> p { -> x { p[n[p][x]] } } }[-> p { p[-> x { -> y { y } }] }[p]]] }][-> x { -> y { -> f { f[x][y] } } }[-> p { -> x { x } }][-> p { -> x { x } }]]] }][m] } }[m][n]][n][x] }][m] } } }][n][-> m { -> n { n[-> m { -> n { n[-> n { -> p { -> x { p[n[p][x]] } } }][m] } }[m]][-> p { -> x { x } }] } }[-> p { -> x { p[p[x]] } }][-> p { -> x { p[p[p[p[p[x]]]]] } }]]] } }][n]]]] }]
+
+FIRST     = -> l { LEFT[RIGHT[l]] }
+IF        = -> b { b }
+LEFT      = -> p { p[-> x { -> y { x } } ] }
+RIGHT     = -> p { p[-> x { -> y { y } } ] }
+IS_EMPTY  = LEFT
+REST      = -> l { RIGHT[RIGHT[l]] }
+
+def to_integer(proc)
+  proc[-> n { n + 1 }][0]
+end
+
+def to_boolean(proc)
+  IF[proc][true][false]
+end
+
+def to_array(proc)
+  array = []
+
+  until to_boolean(IS_EMPTY[proc])
+    array.push(FIRST[proc])
+    proc = REST[proc]
+  end
+
+  array
+end
+
+def to_char(c)
+  '0123456789BFiuz'.slice(to_integer(c))
+end
+
+def to_string(s)
+  to_array(s).map { |c| to_char(c) }.join
+end
+
+answer = to_array(solution).map do |p|
+  to_string(p)
+end
+
+answer_ary = answer.to_a
+# puts answer_ary
diff --git a/benchmark/app_mandelbrot.rb b/benchmark/app_mandelbrot.rb
new file mode 100644
index 0000000000..801b75e8e2
--- /dev/null
+++ b/benchmark/app_mandelbrot.rb
@@ -0,0 +1,23 @@
+require 'complex'
+
+def mandelbrot? z
+  i = 0
+  while i<100
+    i += 1
+    z = z * z
+    return false if z.abs > 2
+  end
+  true
+end
+
+ary = []
+
+(0..1000).each{|dx|
+  (0..1000).each{|dy|
+    x = dx / 50.0
+    y = dy / 50.0
+    c = Complex(x, y)
+    ary << c if mandelbrot?(c)
+  }
+}
+
diff --git a/benchmark/app_pentomino.rb b/benchmark/app_pentomino.rb
new file mode 100644
index 0000000000..47be7b203f
--- /dev/null
+++ b/benchmark/app_pentomino.rb
@@ -0,0 +1,130 @@
+#!/usr/local/bin/ruby
+# This program is contributed by Shin Nishiyama
+
+
+# modified by K.Sasada
+
+NP = 5
+ROW = 8 + NP
+COL = 8
+
+$p = []
+$b = []
+$no = 0
+
+def piece(n, a, nb)
+  nb.each{|x|
+    a[n] = x
+    if n == NP-1
+      $p << [a.sort]
+    else
+      nbc=nb.dup
+      [-ROW, -1, 1, ROW].each{|d|
+        if x+d > 0 and not a.include?(x+d) and not nbc.include?(x+d)
+          nbc << x+d
+        end
+      }
+      nbc.delete x
+      piece(n+1,a[0..n],nbc)
+    end
+  }
+end
+
+def kikaku(a)
+  a.collect {|x| x - a[0]}
+end
+def ud(a)
+  kikaku(a.collect {|x| ((x+NP)%ROW)-ROW*((x+NP)/ROW) }.sort)
+end
+def rl(a)
+  kikaku(a.collect {|x| ROW*((x+NP)/ROW)+ROW-((x+NP)%ROW)}.sort)
+end
+def xy(a)
+  kikaku(a.collect {|x| ROW*((x+NP)%ROW) + (x+NP)/ROW }.sort)
+end
+
+def mkpieces
+  piece(0,[],[0])
+  $p.each do |a|
+    a0 = a[0]
+    a[1] = ud(a0)
+    a[2] = rl(a0)
+    a[3] = ud(rl(a0))
+    a[4] = xy(a0)
+    a[5] = ud(xy(a0))
+    a[6] = rl(xy(a0))
+    a[7] = ud(rl(xy(a0)))
+    a.sort!
+    a.uniq!
+  end
+  $p.uniq!.sort! {|x,y| x[0] <=> y[0] }
+end
+
+def mkboard
+  (0...ROW*COL).each{|i|
+    if i % ROW >= ROW-NP
+      $b[i] = -2
+    else
+      $b[i] = -1
+    end
+    $b[3*ROW+3]=$b[3*ROW+4]=$b[4*ROW+3]=$b[4*ROW+4]=-2
+  }
+end
+
+def pboard
+  return # skip print
+  print "No. #$no\n"
+  (0...COL).each{|i|
+    print "|"
+    (0...ROW-NP).each{|j|
+      x = $b[i*ROW+j]
+      if x < 0
+        print "..|"
+      else
+        printf "%2d|",x+1
+      end
+    }
+    print "\n"
+  }
+  print "\n"
+end
+
+$pnum=[]
+def setpiece(a,pos)
+  if a.length == $p.length then
+    $no += 1
+    pboard
+    return
+  end
+  while $b[pos] != -1
+    pos += 1
+  end
+  ($pnum - a).each do |i|
+    $p[i].each do |x|
+      f = 0
+      x.each{|s|
+        if $b[pos+s] != -1
+          f=1
+          break
+        end
+      }
+      if f == 0 then
+        x.each{|s|
+          $b[pos+s] = i
+        }
+        a << i
+        setpiece(a.dup, pos)
+        a.pop
+        x.each{|s|
+          $b[pos+s] = -1
+        }
+      end
+    end
+  end
+end
+
+mkpieces
+mkboard
+$p[4] = [$p[4][0]]
+$pnum = (0...$p.length).to_a
+setpiece([],0)
diff --git a/benchmark/app_raise.rb b/benchmark/app_raise.rb
new file mode 100644
index 0000000000..5db8f95d50
--- /dev/null
+++ b/benchmark/app_raise.rb
@@ -0,0 +1,8 @@
+i = 0
+while i<300000
+  i += 1
+  begin
+    raise
+  rescue
+  end
+end
diff --git a/benchmark/app_strconcat.rb b/benchmark/app_strconcat.rb
new file mode 100644
index 0000000000..7eed7c1aed
--- /dev/null
+++ b/benchmark/app_strconcat.rb
@@ -0,0 +1,5 @@
+i = 0
+while i<2_000_000
+  "#{1+1} #{1+1} #{1+1}"
+  i += 1
+end
diff --git a/benchmark/bm_app_tak.rb b/benchmark/app_tak.rb
index efe5380f4e..efe5380f4e 100644
--- a/benchmark/bm_app_tak.rb
+++ b/benchmark/app_tak.rb
diff --git a/benchmark/bm_app_tarai.rb b/benchmark/app_tarai.rb
index 4c146f5ccf..4c146f5ccf 100644
--- a/benchmark/bm_app_tarai.rb
+++ b/benchmark/app_tarai.rb
diff --git a/benchmark/bm_app_uri.rb b/benchmark/app_uri.rb
index 586edfd5dc..586edfd5dc 100644
--- a/benchmark/bm_app_uri.rb
+++ b/benchmark/app_uri.rb
diff --git a/benchmark/array_flatten.yml b/benchmark/array_flatten.yml
new file mode 100644
index 0000000000..88ef544ba0
--- /dev/null
+++ b/benchmark/array_flatten.yml
@@ -0,0 +1,19 @@
+prelude: |
+  small_flat_ary = 5.times.to_a
+  large_flat_ary = 100.times.to_a
+  small_pairs_ary = [[1, 2]] * 5
+  large_pairs_ary = [[1, 2]] * 100
+  mostly_flat_ary = 100.times.to_a.push([101, 102])
+
+benchmark:
+  small_flat_ary.flatten: small_flat_ary.flatten
+  small_flat_ary.flatten!: small_flat_ary.flatten!
+  large_flat_ary.flatten: large_flat_ary.flatten
+  large_flat_ary.flatten!: large_flat_ary.flatten!
+  small_pairs_ary.flatten: small_pairs_ary.flatten
+  small_pairs_ary.flatten!: small_pairs_ary.dup.flatten!
+  large_pairs_ary.flatten: large_pairs_ary.flatten
+  large_pairs_ary.flatten!: large_pairs_ary.dup.flatten!
+  mostly_flat_ary.flatten: mostly_flat_ary.flatten
+  mostly_flat_ary.flatten!: mostly_flat_ary.dup.flatten!
+loop_count: 10000
diff --git a/benchmark/array_intersection.yml b/benchmark/array_intersection.yml
new file mode 100644
index 0000000000..26705323fd
--- /dev/null
+++ b/benchmark/array_intersection.yml
@@ -0,0 +1,14 @@
+prelude: |
+  small1 = [1, 2, 3]
+  small2 = [1, 2, 3, 4, 5]
+  small3 = [2, 3, 4, 5]
+  small4 = [2]
+  big1 = [1, 2, 3, 4] * 64
+  big2 = [1, 2, 3] * 64
+  big3 = [1, 2] * 64
+
+benchmark:
+  small-&: small1 & small2 & small3 & small4
+  small-intersection: small1.intersection(small2, small3, small4)
+  big-&: big1 & big2 & big3
+  big-intersection: big1.intersection(big2, big3)
diff --git a/benchmark/array_max_float.yml b/benchmark/array_max_float.yml
new file mode 100644
index 0000000000..ace1ae2e14
--- /dev/null
+++ b/benchmark/array_max_float.yml
@@ -0,0 +1,30 @@
+prelude: |
+  ary2 = 2.times.map(&:to_f).shuffle
+  ary10 = 10.times.map(&:to_f).shuffle
+  ary100 = 100.times.map(&:to_f).shuffle
+  ary500 = 500.times.map(&:to_f).shuffle
+  ary1000 = 1000.times.map(&:to_f).shuffle
+  ary2000 = 2500.times.map(&:to_f).shuffle
+  ary3000 = 2500.times.map(&:to_f).shuffle
+  ary5000 = 5000.times.map(&:to_f).shuffle
+  ary10000 = 10000.times.map(&:to_f).shuffle
+  ary20000 = 20000.times.map(&:to_f).shuffle
+  ary50000 = 50000.times.map(&:to_f).shuffle
+  ary100000 = 100000.times.map(&:to_f).shuffle
+
+benchmark:
+  ary2.max: ary2.max
+  ary10.max: ary10.max
+  ary100.max: ary100.max
+  ary500.max: ary500.max
+  ary1000.max: ary1000.max
+  ary2000.max: ary2000.max
+  ary3000.max: ary3000.max
+  ary5000.max: ary5000.max
+  ary10000.max: ary10000.max
+  ary20000.max: ary20000.max
+  ary50000.max: ary50000.max
+  ary100000.max: ary100000.max
+
+loop_count: 10000
+
diff --git a/benchmark/array_max_int.yml b/benchmark/array_max_int.yml
new file mode 100644
index 0000000000..acd83684d0
--- /dev/null
+++ b/benchmark/array_max_int.yml
@@ -0,0 +1,31 @@
+prelude: |
+  ary2 = 2.times.to_a.shuffle
+  ary10 = 10.times.to_a.shuffle
+  ary100 = 100.times.to_a.shuffle
+  ary500 = 500.times.to_a.shuffle
+  ary1000 = 1000.times.to_a.shuffle
+  ary2000 = 2500.times.to_a.shuffle
+  ary3000 = 2500.times.to_a.shuffle
+  ary5000 = 5000.times.to_a.shuffle
+  ary10000 = 10000.times.to_a.shuffle
+  ary20000 = 20000.times.to_a.shuffle
+  ary50000 = 50000.times.to_a.shuffle
+  ary100000 = 100000.times.to_a.shuffle
+  ary1000000 = 1000000.times.to_a.shuffle
+
+benchmark:
+  ary2.max: ary2.max
+  ary10.max: ary10.max
+  ary100.max: ary100.max
+  ary500.max: ary500.max
+  ary1000.max: ary1000.max
+  ary2000.max: ary2000.max
+  ary3000.max: ary3000.max
+  ary5000.max: ary5000.max
+  ary10000.max: ary10000.max
+  ary20000.max: ary20000.max
+  ary50000.max: ary50000.max
+  ary100000.max: ary100000.max
+  ary1000000.max: ary1000000.max
+
+loop_count: 10000
diff --git a/benchmark/array_max_str.yml b/benchmark/array_max_str.yml
new file mode 100644
index 0000000000..2aeed010f2
--- /dev/null
+++ b/benchmark/array_max_str.yml
@@ -0,0 +1,30 @@
+prelude: |
+  ary2 = 2.times.map(&:to_s).shuffle
+  ary10 = 10.times.map(&:to_s).shuffle
+  ary100 = 100.times.map(&:to_s).shuffle
+  ary500 = 500.times.map(&:to_s).shuffle
+  ary1000 = 1000.times.map(&:to_s).shuffle
+  ary2000 = 2500.times.map(&:to_s).shuffle
+  ary3000 = 2500.times.map(&:to_s).shuffle
+  ary5000 = 5000.times.map(&:to_s).shuffle
+  ary10000 = 10000.times.map(&:to_s).shuffle
+  ary20000 = 20000.times.map(&:to_s).shuffle
+  ary50000 = 50000.times.map(&:to_s).shuffle
+  ary100000 = 100000.times.map(&:to_s).shuffle
+
+benchmark:
+  ary2.max: ary2.max
+  ary10.max: ary10.max
+  ary100.max: ary100.max
+  ary500.max: ary500.max
+  ary1000.max: ary1000.max
+  ary2000.max: ary2000.max
+  ary3000.max: ary3000.max
+  ary5000.max: ary5000.max
+  ary10000.max: ary10000.max
+  ary20000.max: ary20000.max
+  ary50000.max: ary50000.max
+  ary100000.max: ary100000.max
+
+loop_count: 10000
+
diff --git a/benchmark/array_min.yml b/benchmark/array_min.yml
new file mode 100644
index 0000000000..53e5072b14
--- /dev/null
+++ b/benchmark/array_min.yml
@@ -0,0 +1,31 @@
+prelude: |
+  ary2 = 2.times.to_a.shuffle
+  ary10 = 10.times.to_a.shuffle
+  ary100 = 100.times.to_a.shuffle
+  ary500 = 500.times.to_a.shuffle
+  ary1000 = 1000.times.to_a.shuffle
+  ary2000 = 2500.times.to_a.shuffle
+  ary3000 = 2500.times.to_a.shuffle
+  ary5000 = 5000.times.to_a.shuffle
+  ary10000 = 10000.times.to_a.shuffle
+  ary20000 = 20000.times.to_a.shuffle
+  ary50000 = 50000.times.to_a.shuffle
+  ary100000 = 100000.times.to_a.shuffle
+  ary1000000 = 1000000.times.to_a.shuffle
+
+benchmark:
+  ary2.min: ary2.min
+  ary10.min: ary10.min
+  ary100.min: ary100.min
+  ary500.min: ary500.min
+  ary1000.min: ary1000.min
+  ary2000.min: ary2000.min
+  ary3000.min: ary3000.min
+  ary5000.min: ary5000.min
+  ary10000.min: ary10000.min
+  ary20000.min: ary20000.min
+  ary50000.min: ary50000.min
+  ary100000.min: ary100000.min
+  ary1000000.min: ary1000000.min
+
+loop_count: 10000
diff --git a/benchmark/array_sample_100k_10.rb b/benchmark/array_sample_100k_10.rb
new file mode 100644
index 0000000000..5f41ecc32b
--- /dev/null
+++ b/benchmark/array_sample_100k_10.rb
@@ -0,0 +1,2 @@
+arr = [*0...100000]
+10_000.times {arr.sample 10}
diff --git a/benchmark/array_sample_100k_11.rb b/benchmark/array_sample_100k_11.rb
new file mode 100644
index 0000000000..18b1715319
--- /dev/null
+++ b/benchmark/array_sample_100k_11.rb
@@ -0,0 +1,2 @@
+arr = [*0...100000]
+10_000.times {arr.sample 11}
diff --git a/benchmark/array_sample_100k__100.rb b/benchmark/array_sample_100k__100.rb
new file mode 100644
index 0000000000..22863afe89
--- /dev/null
+++ b/benchmark/array_sample_100k__100.rb
@@ -0,0 +1,2 @@
+arr = [*0...100000]
+10_000.times {arr.sample 100}
diff --git a/benchmark/array_sample_100k__1k.rb b/benchmark/array_sample_100k__1k.rb
new file mode 100644
index 0000000000..4cd79e6c67
--- /dev/null
+++ b/benchmark/array_sample_100k__1k.rb
@@ -0,0 +1,2 @@
+arr = [*0...100000]
+10_000.times {arr.sample 1000}
diff --git a/benchmark/array_sample_100k__6k.rb b/benchmark/array_sample_100k__6k.rb
new file mode 100644
index 0000000000..b3d264249e
--- /dev/null
+++ b/benchmark/array_sample_100k__6k.rb
@@ -0,0 +1,2 @@
+arr = [*0...100000]
+10_000.times {arr.sample 6000}
diff --git a/benchmark/array_sample_100k___10k.rb b/benchmark/array_sample_100k___10k.rb
new file mode 100644
index 0000000000..5dd55ec058
--- /dev/null
+++ b/benchmark/array_sample_100k___10k.rb
@@ -0,0 +1,2 @@
+arr = [*0...100000]
+10_000.times {arr.sample 10_000}
diff --git a/benchmark/array_sample_100k___50k.rb b/benchmark/array_sample_100k___50k.rb
new file mode 100644
index 0000000000..1506732c3c
--- /dev/null
+++ b/benchmark/array_sample_100k___50k.rb
@@ -0,0 +1,2 @@
+arr = [*0...100000]
+10_000.times {arr.sample 50_000}
diff --git a/benchmark/array_shift.rb b/benchmark/array_shift.rb
new file mode 100644
index 0000000000..798bb9e3f4
--- /dev/null
+++ b/benchmark/array_shift.rb
@@ -0,0 +1,14 @@
+require 'benchmark'
+
+Benchmark.bm do |x|
+  [10_000,1_000_000,100_000_000].each do |n|
+    ary = Array.new(n,0)
+    GC.start
+    x.report("#{n}:shift"){ ary.shift }
+    (0..4).each do |i|
+      ary = Array.new(n,0)
+      GC.start
+      x.report("#{n}:shift(#{i})"){ ary.shift(i) }
+    end
+  end
+end
diff --git a/benchmark/array_small_and.rb b/benchmark/array_small_and.rb
new file mode 100644
index 0000000000..e53a6edae6
--- /dev/null
+++ b/benchmark/array_small_and.rb
@@ -0,0 +1,17 @@
+MIN_SIZE = ENV.fetch('SMALL_ARRAY_MIN', 0).to_i
+MAX_SIZE = ENV.fetch('SMALL_ARRAY_MAX', 16).to_i
+ITERATIONS = ENV.fetch('SMALL_ARRAY_ITERATIONS', 100).to_i
+
+ARRAYS = (MIN_SIZE..MAX_SIZE).map do |size1|
+  (MIN_SIZE..MAX_SIZE).map do |size2|
+    [Array.new(size1) { rand(MAX_SIZE) }, Array.new(size2) { rand(MAX_SIZE) }]
+  end
+end
+
+ITERATIONS.times do
+  ARRAYS.each do |group|
+    group.each do |arr1, arr2|
+      arr1 & arr2
+    end
+  end
+end
diff --git a/benchmark/array_small_diff.rb b/benchmark/array_small_diff.rb
new file mode 100644
index 0000000000..9661ee48db
--- /dev/null
+++ b/benchmark/array_small_diff.rb
@@ -0,0 +1,17 @@
+MIN_SIZE = ENV.fetch('SMALL_ARRAY_MIN', 0).to_i
+MAX_SIZE = ENV.fetch('SMALL_ARRAY_MAX', 16).to_i
+ITERATIONS = ENV.fetch('SMALL_ARRAY_ITERATIONS', 100).to_i
+
+ARRAYS = (MIN_SIZE..MAX_SIZE).map do |size1|
+  (MIN_SIZE..MAX_SIZE).map do |size2|
+    [Array.new(size1) { rand(MAX_SIZE) }, Array.new(size2) { rand(MAX_SIZE) }]
+  end
+end
+
+ITERATIONS.times do
+  ARRAYS.each do |group|
+    group.each do |arr1, arr2|
+      arr1 - arr2
+    end
+  end
+end
diff --git a/benchmark/array_small_or.rb b/benchmark/array_small_or.rb
new file mode 100644
index 0000000000..c58b5fd1ff
--- /dev/null
+++ b/benchmark/array_small_or.rb
@@ -0,0 +1,17 @@
+MIN_SIZE = ENV.fetch('SMALL_ARRAY_MIN', 0).to_i
+MAX_SIZE = ENV.fetch('SMALL_ARRAY_MAX', 16).to_i
+ITERATIONS = ENV.fetch('SMALL_ARRAY_ITERATIONS', 100).to_i
+
+ARRAYS = (MIN_SIZE..MAX_SIZE).map do |size1|
+  (MIN_SIZE..MAX_SIZE).map do |size2|
+    [Array.new(size1) { rand(MAX_SIZE) }, Array.new(size2) { rand(MAX_SIZE) }]
+  end
+end
+
+ITERATIONS.times do
+  ARRAYS.each do |group|
+    group.each do |arr1, arr2|
+      arr1 | arr2
+    end
+  end
+end
diff --git a/benchmark/array_sort_block.rb b/benchmark/array_sort_block.rb
new file mode 100644
index 0000000000..3579786056
--- /dev/null
+++ b/benchmark/array_sort_block.rb
@@ -0,0 +1,2 @@
+ary = Array.new(1000) { rand(1000) }
+10000.times { ary.sort { |a, b| a <=> b } }
diff --git a/benchmark/array_sort_float.rb b/benchmark/array_sort_float.rb
new file mode 100644
index 0000000000..9a6e2f8bd2
--- /dev/null
+++ b/benchmark/array_sort_float.rb
@@ -0,0 +1,2 @@
+arr = Array.new(1000) { rand }
+10000.times { arr.sort }
diff --git a/benchmark/array_values_at_int.rb b/benchmark/array_values_at_int.rb
new file mode 100644
index 0000000000..6cb394cb9f
--- /dev/null
+++ b/benchmark/array_values_at_int.rb
@@ -0,0 +1,2 @@
+ary = Array.new(10000) {|i| i}
+100000.times { ary.values_at(500) }
diff --git a/benchmark/array_values_at_range.rb b/benchmark/array_values_at_range.rb
new file mode 100644
index 0000000000..5b53806d1c
--- /dev/null
+++ b/benchmark/array_values_at_range.rb
@@ -0,0 +1,2 @@
+ary = Array.new(10000) {|i| i}
+100000.times { ary.values_at(1..2000) }
diff --git a/benchmark/bighash.rb b/benchmark/bighash.rb
new file mode 100644
index 0000000000..e2ad5a5c94
--- /dev/null
+++ b/benchmark/bighash.rb
@@ -0,0 +1 @@
+h = {}; 5000000.times {|n| h[n] = n }
diff --git a/benchmark/bm_app_erb.rb b/benchmark/bm_app_erb.rb
deleted file mode 100644
index e58b7a34a1..0000000000
--- a/benchmark/bm_app_erb.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-#
-# Create many HTML strings with ERB.
-#
-
-require 'erb'
-
-data = DATA.read
-max = 5_000
-title = "hello world!"
-content = "hello world!\n" * 10
-
-max.times{
-  ERB.new(data).result(binding)
-}
-
-__END__
-
-<html>
-  <head> <%= title %> </head>
-  <body>
-    <h1> <%= title %> </h1>
-    <p>
-      <%= content %>
-    </p>
-  </body>
-</html>
diff --git a/benchmark/bm_app_factorial.rb b/benchmark/bm_app_factorial.rb
deleted file mode 100644
index a5a5de0426..0000000000
--- a/benchmark/bm_app_factorial.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-def fact(n)
-  if(n > 1)
-    n * fact(n-1)
-  else
-    1
-  end
-end
-
-8.times{
-  fact(5000)
-}
\ No newline at end of file
diff --git a/benchmark/bm_app_mandelbrot.rb b/benchmark/bm_app_mandelbrot.rb
deleted file mode 100644
index a0dcf5e874..0000000000
--- a/benchmark/bm_app_mandelbrot.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-require 'complex'
-
-def mandelbrot? z
-  i = 0
-  while i<100
-    i+=1
-    z = z * z
-    return false if z.abs > 2
-  end
-  true
-end
-
-ary = []
-
-(0..100).each{|dx|
-  (0..100).each{|dy|
-    x = dx / 50.0
-    y = dy / 50.0
-    c = Complex(x, y)
-    ary << c if mandelbrot?(c)
-  }
-}
-
diff --git a/benchmark/bm_app_pentomino.rb b/benchmark/bm_app_pentomino.rb
deleted file mode 100644
index 59c63f358e..0000000000
--- a/benchmark/bm_app_pentomino.rb
+++ /dev/null
@@ -1,259 +0,0 @@
-#!/usr/local/bin/ruby
-# This program is contributed by Shin Nishiyama
-
-
-# modified by K.Sasada
-
-NP = 5
-ROW = 8 + NP
-COL = 8
-
-$p = []
-$b = []
-$no = 0
-
-def piece(n, a, nb)
-  nb.each{|x|
-    a[n] = x
-    if n == NP-1
-      $p << [a.sort]
-    else
-      nbc=nb.dup
-      [-ROW, -1, 1, ROW].each{|d|
-        if x+d > 0 and not a.include?(x+d) and not nbc.include?(x+d)
-          nbc << x+d
-        end
-      }
-      nbc.delete x
-      piece(n+1,a[0..n],nbc)
-    end
-  }
-end
-
-def kikaku(a)
-  a.collect {|x| x - a[0]}
-end
-def ud(a)
-  kikaku(a.collect {|x| ((x+NP)%ROW)-ROW*((x+NP)/ROW) }.sort)
-end
-def rl(a)
-  kikaku(a.collect {|x| ROW*((x+NP)/ROW)+ROW-((x+NP)%ROW)}.sort)
-end
-def xy(a)
-  kikaku(a.collect {|x| ROW*((x+NP)%ROW) + (x+NP)/ROW }.sort)
-end
-
-def mkpieces
-  piece(0,[],[0])
-  $p.each do |a|
-    a0 = a[0]
-    a[1] = ud(a0)
-    a[2] = rl(a0)
-    a[3] = ud(rl(a0))
-    a[4] = xy(a0)
-    a[5] = ud(xy(a0))
-    a[6] = rl(xy(a0))
-    a[7] = ud(rl(xy(a0)))
-    a.sort!
-    a.uniq!
-  end
-  $p.uniq!.sort! {|x,y| x[0] <=> y[0] }
-end
-
-def mkboard
-  (0...ROW*COL).each{|i|
-    if i % ROW >= ROW-NP
-      $b[i] = -2
-    else
-      $b[i] = -1
-    end
-    $b[3*ROW+3]=$b[3*ROW+4]=$b[4*ROW+3]=$b[4*ROW+4]=-2
-  }
-end
-
-def pboard
-  return # skip print
-  print "No. #$no\n"
-  (0...COL).each{|i|
-    print "|"
-    (0...ROW-NP).each{|j|
-      x = $b[i*ROW+j]
-      if x < 0
-        print "..|"
-      else
-        printf "%2d|",x+1
-      end
-    }
-    print "\n"
-  }
-  print "\n"
-end
-
-$pnum=[]
-def setpiece(a,pos)
-  if a.length == $p.length then
-    $no += 1
-    pboard
-    return
-  end
-  while $b[pos] != -1
-    pos += 1
-  end
-  ($pnum - a).each do |i|
-    $p[i].each do |x|
-      f = 0
-      x.each{|s|
-        if $b[pos+s] != -1
-          f=1
-          break
-        end
-      }
-      if f == 0 then
-        x.each{|s|
-          $b[pos+s] = i
-        }
-        a << i
-        setpiece(a.dup, pos)
-        a.pop
-        x.each{|s|
-          $b[pos+s] = -1
-        }
-      end
-    end
-  end
-end
-
-mkpieces
-mkboard
-$p[4] = [$p[4][0]]
-$pnum = (0...$p.length).to_a
-setpiece([],0)
-
-
-__END__
-
-# original
-
-NP = 5
-ROW = 8 + NP
-COL = 8
-
-$p = []
-$b = []
-$no = 0
-
-def piece(n,a,nb)
-  for x in nb
-    a[n] = x
-    if n == NP-1
-      $p << [a.sort]
-    else
-      nbc=nb.dup
-      for d in [-ROW, -1, 1, ROW]
-        if x+d > 0 and not a.include?(x+d) and not nbc.include?(x+d)
-          nbc << x+d
-        end
-      end
-      nbc.delete x
-      piece(n+1,a[0..n],nbc)
-    end
-  end
-end
-
-def kikaku(a)
-  a.collect {|x| x - a[0]}
-end
-def ud(a)
-  kikaku(a.collect {|x| ((x+NP)%ROW)-ROW*((x+NP)/ROW) }.sort)
-end
-def rl(a)
-  kikaku(a.collect {|x| ROW*((x+NP)/ROW)+ROW-((x+NP)%ROW)}.sort)
-end
-def xy(a)
-  kikaku(a.collect {|x| ROW*((x+NP)%ROW) + (x+NP)/ROW }.sort)
-end
-
-def mkpieces
-  piece(0,[],[0])
-  $p.each do |a|
-    a0 = a[0]
-    a[1] = ud(a0)
-    a[2] = rl(a0)
-    a[3] = ud(rl(a0))
-    a[4] = xy(a0)
-    a[5] = ud(xy(a0))
-    a[6] = rl(xy(a0))
-    a[7] = ud(rl(xy(a0)))
-    a.sort!
-    a.uniq!
-  end
-  $p.uniq!.sort! {|x,y| x[0] <=> y[0] }
-end
-
-def mkboard
-  for i in 0...ROW*COL
-    if i % ROW >= ROW-NP
-      $b[i] = -2
-    else
-      $b[i] = -1
-    end
-    $b[3*ROW+3]=$b[3*ROW+4]=$b[4*ROW+3]=$b[4*ROW+4]=-2
-  end
-end
-
-def pboard
-  print "No. #$no\n"
-  for i in 0...COL
-    print "|"
-    for j in 0...ROW-NP
-      x = $b[i*ROW+j]
-      if x < 0
-        print "..|"
-      else
-        printf "%2d|",x+1
-      end
-    end
-    print "\n"
-  end
-  print "\n"
-end
-
-$pnum=[]
-def setpiece(a,pos)
-  if a.length == $p.length then
-    $no += 1
-    pboard
-    return
-  end
-  while $b[pos] != -1
-    pos += 1
-  end
-  ($pnum - a).each do |i|
-    $p[i].each do |x|
-      f = 0
-      for s in x do
-        if $b[pos+s] != -1
-          f=1
-          break
-        end
-      end
-      if f == 0 then
-        for s in x do
-          $b[pos+s] = i
-        end
-        a << i
-        setpiece(a.dup, pos)
-        a.pop
-        for s in x do
-          $b[pos+s] = -1
-        end
-      end
-    end
-  end
-end
-
-mkpieces
-mkboard
-$p[4] = [$p[4][0]]
-$pnum = (0...$p.length).to_a
-setpiece([],0)
diff --git a/benchmark/bm_app_raise.rb b/benchmark/bm_app_raise.rb
deleted file mode 100644
index 01d2ae3219..0000000000
--- a/benchmark/bm_app_raise.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-i=0
-while i<300000
-  i+=1
-  begin
-    raise
-  rescue
-  end
-end
diff --git a/benchmark/bm_app_strconcat.rb b/benchmark/bm_app_strconcat.rb
deleted file mode 100644
index c6ef817263..0000000000
--- a/benchmark/bm_app_strconcat.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-i=0
-while i<500000
-  "#{1+1} #{1+1} #{1+1}"
-  i+=1
-end
diff --git a/benchmark/bm_io_file_create.rb b/benchmark/bm_io_file_create.rb
deleted file mode 100644
index 7adbe9ea5e..0000000000
--- a/benchmark/bm_io_file_create.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-#
-# Create files
-#
-
-max = 50_000
-file = './tmpfile_of_bm_io_file_create'
-
-max.times{
-  f = open(file, 'w')
-  f.close#(true)
-}
-File.unlink(file)
-
diff --git a/benchmark/bm_io_file_read.rb b/benchmark/bm_io_file_read.rb
deleted file mode 100644
index 2b4212db76..0000000000
--- a/benchmark/bm_io_file_read.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-#
-# Seek and Read file.
-#
-
-require 'tempfile'
-
-max = 20_000
-str = "Hello world!  " * 1000
-f = Tempfile.new('yarv-benchmark')
-f.write str
-
-max.times{
-  f.seek 0
-  f.read
-}
diff --git a/benchmark/bm_io_file_write.rb b/benchmark/bm_io_file_write.rb
deleted file mode 100644
index 3cec58c6ae..0000000000
--- a/benchmark/bm_io_file_write.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-#
-# Seek and Write file.
-#
-
-require 'tempfile'
-
-max = 20_000
-str = "Hello world!  " * 1000
-f = Tempfile.new('yarv-benchmark')
-
-max.times{
-  f.seek 0
-  f.write str
-}
diff --git a/benchmark/bm_loop_whileloop.rb b/benchmark/bm_loop_whileloop.rb
deleted file mode 100644
index 43d35e1131..0000000000
--- a/benchmark/bm_loop_whileloop.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-i=0
-while i<30_000_000 # benchmark loop 1
-  i+=1
-end
diff --git a/benchmark/bm_loop_whileloop2.rb b/benchmark/bm_loop_whileloop2.rb
deleted file mode 100644
index e514989661..0000000000
--- a/benchmark/bm_loop_whileloop2.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-i=0
-while i< 6_000_000 # benchmark loop 2
-  i+=1
-end
diff --git a/benchmark/bm_so_ackermann.rb b/benchmark/bm_so_ackermann.rb
deleted file mode 100644
index 7db5be9050..0000000000
--- a/benchmark/bm_so_ackermann.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: ackermann-ruby.code,v 1.4 2004/11/13 07:40:41 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-
-def ack(m, n)
-    if m == 0 then
-        n + 1
-    elsif n == 0 then
-        ack(m - 1, 1)
-    else
-        ack(m - 1, ack(m, n - 1))
-    end
-end
-
-NUM = 9
-ack(3, NUM)
-
-
diff --git a/benchmark/bm_so_array.rb b/benchmark/bm_so_array.rb
deleted file mode 100644
index 2b8fce8f99..0000000000
--- a/benchmark/bm_so_array.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: ary-ruby.code,v 1.4 2004/11/13 07:41:27 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-# with help from Paul Brannan and Mark Hubbart
-
-n = 9000 # Integer(ARGV.shift || 1)
-
-x = Array.new(n)
-y = Array.new(n, 0)
-
-n.times{|bi|
-  x[bi] = bi + 1
-}
-
-(0 .. 999).each do |e|
-  (n-1).step(0,-1) do |bi|
-    y[bi] += x.at(bi)
-  end
-end
-# puts "#{y.first} #{y.last}"
-
-
diff --git a/benchmark/bm_so_binary_trees.rb b/benchmark/bm_so_binary_trees.rb
deleted file mode 100644
index 6a26465578..0000000000
--- a/benchmark/bm_so_binary_trees.rb
+++ /dev/null
@@ -1,57 +0,0 @@
-# The Computer Language Shootout Benchmarks
-# http://shootout.alioth.debian.org
-#
-# contributed by Jesse Millikan
-
-# disable output
-def STDOUT.write_ *args
-end
-
-def item_check(tree)
- if tree[0] == nil
-  tree[1]
- else
-  tree[1] + item_check(tree[0]) - item_check(tree[2])
- end
-end
-
-def bottom_up_tree(item, depth)
- if depth > 0
-  item_item = 2 * item
-  depth -= 1
-  [bottom_up_tree(item_item - 1, depth), item, bottom_up_tree(item_item, depth)]
- else
-  [nil, item, nil]
- end
-end
-
-max_depth = 12 # 16 # ARGV[0].to_i
-min_depth = 4
-
-max_depth = min_depth + 2 if min_depth + 2 > max_depth
-
-stretch_depth = max_depth + 1
-stretch_tree = bottom_up_tree(0, stretch_depth)
-
-puts "stretch tree of depth #{stretch_depth}\t check: #{item_check(stretch_tree)}"
-stretch_tree = nil
-
-long_lived_tree = bottom_up_tree(0, max_depth)
-
-min_depth.step(max_depth + 1, 2) do |depth|
- iterations = 2**(max_depth - depth + min_depth)
-
- check = 0
-
- for i in 1..iterations
-  temp_tree = bottom_up_tree(i, depth)
-  check += item_check(temp_tree)
-
-  temp_tree = bottom_up_tree(-i, depth)
-  check += item_check(temp_tree)
- end
-
- puts "#{iterations * 2}\t trees of depth #{depth}\t check: #{check}"
-end
-
-puts "long lived tree of depth #{max_depth}\t check: #{item_check(long_lived_tree)}"
diff --git a/benchmark/bm_so_concatenate.rb b/benchmark/bm_so_concatenate.rb
deleted file mode 100644
index 82629688b7..0000000000
--- a/benchmark/bm_so_concatenate.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: strcat-ruby.code,v 1.4 2004/11/13 07:43:28 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-# based on code from Aristarkh A Zagorodnikov and Dat Nguyen
-
-STUFF = "hello\n"
-i=0
-while i<10
-  i+=1
-  hello = ''
-  400000.times do |e|
-    hello << STUFF
-  end
-end
-# puts hello.length
-
-
diff --git a/benchmark/bm_so_count_words.rb b/benchmark/bm_so_count_words.rb
deleted file mode 100644
index 65f6337a4a..0000000000
--- a/benchmark/bm_so_count_words.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: wc-ruby.code,v 1.4 2004/11/13 07:43:32 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-# with help from Paul Brannan
-
-input = open(File.join(File.dirname($0), 'wc.input'), 'rb')
-
-nl = nw = nc = 0
-while true
-  tmp = input.read(4096) or break
-  data = tmp << (input.gets || "")
-  nc += data.length
-  nl += data.count("\n")
-  ((data.strip! || data).tr!("\n", " ") || data).squeeze!
-  nw += data.count(" ") + 1
-end
-# STDERR.puts "#{nl} #{nw} #{nc}"
-
diff --git a/benchmark/bm_so_exception.rb b/benchmark/bm_so_exception.rb
deleted file mode 100644
index d8b461290c..0000000000
--- a/benchmark/bm_so_exception.rb
+++ /dev/null
@@ -1,61 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: except-ruby.code,v 1.4 2004/11/13 07:41:33 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-
-$HI = 0
-$LO = 0
-NUM = 250000 # Integer(ARGV[0] || 1)
-
-
-class Lo_Exception < Exception
-  def initialize(num)
-    @value = num
-  end
-end
-
-class Hi_Exception < Exception
-  def initialize(num)
-    @value = num
-  end
-end
-
-def some_function(num)
-  begin
-    hi_function(num)
-  rescue
-    print "We shouldn't get here, exception is: #{$!.type}\n"
-  end
-end
-
-def hi_function(num)
-  begin
-    lo_function(num)
-  rescue Hi_Exception
-    $HI = $HI + 1
-  end
-end
-
-def lo_function(num)
-  begin
-    blowup(num)
-  rescue Lo_Exception
-    $LO = $LO + 1
-  end
-end
-
-def blowup(num)
-  if num % 2 == 0
-    raise Lo_Exception.new(num)
-  else
-    raise Hi_Exception.new(num)
-  end
-end
-
-
-i = 1
-max = NUM+1
-while i < max
-  i+=1
-  some_function(i+1)
-end
diff --git a/benchmark/bm_so_fannkuch.rb b/benchmark/bm_so_fannkuch.rb
deleted file mode 100644
index a214f2e205..0000000000
--- a/benchmark/bm_so_fannkuch.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org/
-# Contributed by Sokolov Yura
-# Modified by Ryan Williams
-
-def fannkuch(n)
-   maxFlips, m, r, check = 0, n-1, n, 0
-   count = (1..n).to_a
-   perm = (1..n).to_a
-
-   while true
-      if check < 30
-         puts "#{perm}"
-         check += 1
-      end
-
-      while r != 1
-         count[r-1] = r
-         r -= 1
-      end
-
-      if perm[0] != 1 and perm[m] != n
-         perml = perm.clone #.dup
-         flips = 0
-         while (k = perml.first ) != 1
-            perml = perml.slice!(0, k).reverse + perml
-            flips += 1
-         end
-         maxFlips = flips if flips > maxFlips
-      end
-      while true
-         if r==n then return maxFlips end
-         perm.insert r,perm.shift
-         break if (count[r] -= 1) > 0
-         r += 1
-      end
-   end
-end
-
-def puts *args
-end
-
-N = 10 # (ARGV[0] || 1).to_i
-puts "Pfannkuchen(#{N}) = #{fannkuch(N)}"
-
diff --git a/benchmark/bm_so_fasta.rb b/benchmark/bm_so_fasta.rb
deleted file mode 100644
index 3f759ba7ae..0000000000
--- a/benchmark/bm_so_fasta.rb
+++ /dev/null
@@ -1,81 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org/
-# Contributed by Sokolov Yura
-
-$last = 42.0
-def gen_random (max,im=139968,ia=3877,ic=29573)
-    (max * ($last = ($last * ia + ic) % im)) / im
-end
-
-alu =
-   "GGCCGGGCGCGGTGGCTCACGCCTGTAATCCCAGCACTTTGG"+
-   "GAGGCCGAGGCGGGCGGATCACCTGAGGTCAGGAGTTCGAGA"+
-   "CCAGCCTGGCCAACATGGTGAAACCCCGTCTCTACTAAAAAT"+
-   "ACAAAAATTAGCCGGGCGTGGTGGCGCGCGCCTGTAATCCCA"+
-   "GCTACTCGGGAGGCTGAGGCAGGAGAATCGCTTGAACCCGGG"+
-   "AGGCGGAGGTTGCAGTGAGCCGAGATCGCGCCACTGCACTCC"+
-   "AGCCTGGGCGACAGAGCGAGACTCCGTCTCAAAAA"
-
-iub = [
-    ["a", 0.27],
-    ["c", 0.12],
-    ["g", 0.12],
-    ["t", 0.27],
-
-    ["B", 0.02],
-    ["D", 0.02],
-    ["H", 0.02],
-    ["K", 0.02],
-    ["M", 0.02],
-    ["N", 0.02],
-    ["R", 0.02],
-    ["S", 0.02],
-    ["V", 0.02],
-    ["W", 0.02],
-    ["Y", 0.02],
-]
-homosapiens = [
-    ["a", 0.3029549426680],
-    ["c", 0.1979883004921],
-    ["g", 0.1975473066391],
-    ["t", 0.3015094502008],
-]
-
-def make_repeat_fasta(id, desc, src, n)
-    puts ">#{id} #{desc}"
-    v = nil
-    width = 60
-    l = src.length
-    s = src * ((n / l) + 1)
-    s.slice!(n, l)
-    puts(s.scan(/.{1,#{width}}/).join("\n"))
-end
-
-def make_random_fasta(id, desc, table, n)
-    puts ">#{id} #{desc}"
-    rand, v = nil,nil
-    width = 60
-    chunk = 1 * width
-    prob = 0.0
-    table.each{|v| v[1]= (prob += v[1])}
-    for i in 1..(n/width)
-        puts((1..width).collect{
-            rand = gen_random(1.0)
-            table.find{|v| v[1]>rand}[0]
-        }.join)
-    end
-    if n%width != 0
-        puts((1..(n%width)).collect{
-            rand = gen_random(1.0)
-            table.find{|v| v[1]>rand}[0]
-        }.join)
-    end
-end
-
-
-n = (ARGV[0] or 250_000).to_i
-
-make_repeat_fasta('ONE', 'Homo sapiens alu', alu, n*2)
-make_random_fasta('TWO', 'IUB ambiguity codes', iub, n*3)
-make_random_fasta('THREE', 'Homo sapiens frequency', homosapiens, n*5)
-
diff --git a/benchmark/bm_so_k_nucleotide.rb b/benchmark/bm_so_k_nucleotide.rb
deleted file mode 100644
index dadab3e79c..0000000000
--- a/benchmark/bm_so_k_nucleotide.rb
+++ /dev/null
@@ -1,48 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org
-#
-# contributed by jose fco. gonzalez
-# modified by Sokolov Yura
-
-seq = String.new
-
-def frecuency( seq,length )
-    n, table = seq.length - length + 1, Hash.new(0)
-    f, i = nil, nil
-    (0 ... length).each do |f|
-        (f ... n).step(length) do |i|
-            table[seq[i,length]] += 1
-        end
-    end
-    [n,table]
-
-end
-
-def sort_by_freq( seq,length )
-    n,table = frecuency( seq,length )
-    a, b, v = nil, nil, nil
-    table.sort{|a,b| b[1] <=> a[1]}.each do |v|
-        puts "%s %.3f" % [v[0].upcase,((v[1]*100).to_f/n)]
-    end
-    puts
-end
-
-def find_seq( seq,s )
-    n,table = frecuency( seq,s.length )
-    puts "#{table[s].to_s}\t#{s.upcase}"
-end
-
-input = open(File.join(File.dirname($0), 'fasta.output.100000'), 'rb')
-
-line = input.gets while line !~ /^>THREE/
-line = input.gets
-
-while (line !~ /^>/) & line do
-    seq << line.chomp
-    line = input.gets
-end
-
-[1,2].each {|i| sort_by_freq( seq,i ) }
-
-%w(ggt ggta ggtatt ggtattttaatt ggtattttaatttatagt).each{|s| find_seq( seq,s) }
-
diff --git a/benchmark/bm_so_lists.rb b/benchmark/bm_so_lists.rb
deleted file mode 100644
index 3652288881..0000000000
--- a/benchmark/bm_so_lists.rb
+++ /dev/null
@@ -1,47 +0,0 @@
-#from http://www.bagley.org/~doug/shootout/bench/lists/lists.ruby
-
-NUM = 100
-SIZE = 10000
-
-def test_lists()
-  # create a list of integers (Li1) from 1 to SIZE
-  li1 = (1..SIZE).to_a
-  # copy the list to li2 (not by individual items)
-  li2 = li1.dup
-  # remove each individual item from left side of li2 and
-  # append to right side of li3 (preserving order)
-  li3 = Array.new
-  while (not li2.empty?)
-    li3.push(li2.shift)
-  end
-  # li2 must now be empty
-  # remove each individual item from right side of li3 and
-  # append to right side of li2 (reversing list)
-  while (not li3.empty?)
-    li2.push(li3.pop)
-  end
-  # li3 must now be empty
-  # reverse li1 in place
-  li1.reverse!
-  # check that first item is now SIZE
-  if li1[0] != SIZE then
-    p "not SIZE"
-    0
-  else
-    # compare li1 and li2 for equality
-    if li1 != li2 then
-      return(0)
-    else
-      # return the length of the list
-      li1.length
-    end
-  end
-end
-
-i = 0
-while i<NUM
-  i+=1
-  result = test_lists()
-end
-
-result
diff --git a/benchmark/bm_so_matrix.rb b/benchmark/bm_so_matrix.rb
deleted file mode 100644
index 0f274ad06c..0000000000
--- a/benchmark/bm_so_matrix.rb
+++ /dev/null
@@ -1,48 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: matrix-ruby.code,v 1.4 2004/11/13 07:42:14 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-
-n = 60 #Integer(ARGV.shift || 1)
-
-size = 30
-
-def mkmatrix(rows, cols)
-    count = 1
-    mx = Array.new(rows)
-    (0 .. (rows - 1)).each do |bi|
-        row = Array.new(cols, 0)
-        (0 .. (cols - 1)).each do |j|
-            row[j] = count
-            count += 1
-        end
-        mx[bi] = row
-    end
-    mx
-end
-
-def mmult(rows, cols, m1, m2)
-    m3 = Array.new(rows)
-    (0 .. (rows - 1)).each do |bi|
-        row = Array.new(cols, 0)
-        (0 .. (cols - 1)).each do |j|
-            val = 0
-            (0 .. (cols - 1)).each do |k|
-                val += m1.at(bi).at(k) * m2.at(k).at(j)
-            end
-            row[j] = val
-        end
-        m3[bi] = row
-    end
-    m3
-end
-
-m1 = mkmatrix(size, size)
-m2 = mkmatrix(size, size)
-mm = Array.new
-n.times do
-    mm = mmult(size, size, m1, m2)
-end
-# puts "#{mm[0][0]} #{mm[2][3]} #{mm[3][2]} #{mm[4][4]}"
-
-
diff --git a/benchmark/bm_so_meteor_contest.rb b/benchmark/bm_so_meteor_contest.rb
deleted file mode 100644
index 99cf6a91cc..0000000000
--- a/benchmark/bm_so_meteor_contest.rb
+++ /dev/null
@@ -1,564 +0,0 @@
-#!/usr/bin/env ruby
-#
-# The Computer Language Shootout
-#   http://shootout.alioth.debian.org
-#   contributed by Kevin Barnes (Ruby novice)
-
-# PROGRAM:  the main body is at the bottom.
-#   1) read about the problem here: http://www-128.ibm.com/developerworks/java/library/j-javaopt/
-#   2) see how I represent a board as a bitmask by reading the blank_board comments
-#   3) read as your mental paths take you
-
-def print *args
-end
-
-# class to represent all information about a particular rotation of a particular piece
-class Rotation
-  # an array (by location) containing a bit mask for how the piece maps at the given location.
-  # if the rotation is invalid at that location the mask will contain false
-  attr_reader :start_masks
-
-  # maps a direction to a relative location.  these differ depending on whether it is an even or
-  # odd row being mapped from
-  @@rotation_even_adder = { :west => -1, :east => 1, :nw => -7, :ne => -6, :sw => 5, :se => 6 }
-  @@rotation_odd_adder = { :west => -1, :east => 1, :nw => -6, :ne => -5, :sw => 6, :se => 7 }
-
-  def initialize( directions )
-    @even_offsets, @odd_offsets = normalize_offsets( get_values( directions ))
-
-    @even_mask = mask_for_offsets( @even_offsets)
-    @odd_mask = mask_for_offsets( @odd_offsets)
-
-    @start_masks = Array.new(60)
-
-    # create the rotational masks by placing the base mask at the location and seeing if
-    # 1) it overlaps the boundries and 2) it produces a prunable board.  if either of these
-    # is true the piece cannot be placed
-    0.upto(59) do | offset |
-      mask = is_even(offset) ? (@even_mask << offset) : (@odd_mask << offset)
-      if (blank_board & mask == 0 && !prunable(blank_board | mask, 0, true)) then
-        imask = compute_required( mask, offset)
-        @start_masks[offset] = [ mask, imask, imask | mask ]
-      else
-        @start_masks[offset] = false
-      end
-    end
-  end
-
-  def compute_required( mask, offset )
-    board = blank_board
-    0.upto(offset) { | i | board |= 1 << i }
-    board |= mask
-    return 0 if (!prunable(board | mask, offset))
-    board = flood_fill(board,58)
-    count = 0
-    imask = 0
-    0.upto(59) do | i |
-      if (board[i] == 0) then
-        imask |= (1 << i)
-        count += 1
-      end
-    end
-    (count > 0 && count < 5) ? imask : 0
-  end
-
-  def flood_fill( board, location)
-    return board if (board[location] == 1)
-    board |= 1 << location
-    row, col = location.divmod(6)
-    board = flood_fill( board, location - 1) if (col > 0)
-    board = flood_fill( board, location + 1) if (col < 4)
-    if (row % 2 == 0) then
-      board = flood_fill( board, location - 7) if (col > 0 && row > 0)
-      board = flood_fill( board, location - 6) if (row > 0)
-      board = flood_fill( board, location + 6) if (row < 9)
-      board = flood_fill( board, location + 5) if (col > 0 && row < 9)
-    else
-      board = flood_fill( board, location - 5) if (col < 4 && row > 0)
-      board = flood_fill( board, location - 6) if (row > 0)
-      board = flood_fill( board, location + 6) if (row < 9)
-      board = flood_fill( board, location + 7) if (col < 4 && row < 9)
-    end
-    board
-  end
-
-  # given a location, produces a list of relative locations covered by the piece at this rotation
-  def offsets( location)
-    if is_even( location) then
-      @even_offsets.collect { | value | value + location }
-    else
-      @odd_offsets.collect { | value | value + location }
-    end
-  end
-
-  # returns a set of offsets relative to the top-left most piece of the rotation (by even or odd rows)
-  # this is hard to explain. imagine we have this partial board:
-  #   0 0 0 0 0 x        [positions 0-5]
-  #    0 0 1 1 0 x       [positions 6-11]
-  #   0 0 1 0 0 x        [positions 12-17]
-  #    0 1 0 0 0 x       [positions 18-23]
-  #   0 1 0 0 0 x        [positions 24-29]
-  #    0 0 0 0 0 x       [positions 30-35]
-  #       ...
-  # The top-left of the piece is at position 8, the
-  # board would be passed as a set of positions (values array) containing [8,9,14,19,25] not necessarily in that
-  # sorted order.  Since that array starts on an odd row, the offsets for an odd row are: [0,1,6,11,17] obtained
-  # by subtracting 8 from everything.  Now imagine the piece shifted up and to the right so it's on an even row:
-  #   0 0 0 1 1 x        [positions 0-5]
-  #    0 0 1 0 0 x       [positions 6-11]
-  #   0 0 1 0 0 x        [positions 12-17]
-  #    0 1 0 0 0 x       [positions 18-23]
-  #   0 0 0 0 0 x        [positions 24-29]
-  #    0 0 0 0 0 x       [positions 30-35]
-  #       ...
-  # Now the positions are [3,4,8,14,19] which after subtracting the lowest value (3) gives [0,1,5,11,16] thus, the
-  # offsets for this particular piece are (in even, odd order) [0,1,5,11,16],[0,1,6,11,17] which is what
-  # this function would return
-  def normalize_offsets( values)
-    min = values.min
-    even_min = is_even(min)
-    other_min = even_min ? min + 6 : min + 7
-    other_values = values.collect do | value |
-      if is_even(value) then
-        value + 6 - other_min
-      else
-        value + 7 - other_min
-      end
-    end
-    values.collect! { | value | value - min }
-
-    if even_min then
-      [values, other_values]
-    else
-      [other_values, values]
-    end
-  end
-
-  # produce a bitmask representation of an array of offset locations
-  def mask_for_offsets( offsets )
-    mask = 0
-    offsets.each { | value | mask = mask + ( 1 << value ) }
-    mask
-  end
-
-  # finds a "safe" position that a position as described by a list of directions can be placed
-  # without falling off any edge of the board.  the values returned a location to place the first piece
-  # at so it will fit after making the described moves
-  def start_adjust( directions )
-    south = east = 0;
-    directions.each do | direction |
-      east += 1 if ( direction == :sw || direction == :nw || direction == :west )
-      south += 1 if ( direction == :nw || direction == :ne )
-    end
-    south * 6 + east
-  end
-
-  # given a set of directions places the piece (as defined by a set of directions) on the board at
-  # a location that will not take it off the edge
-  def get_values ( directions )
-    start = start_adjust(directions)
-    values = [ start ]
-    directions.each do | direction |
-      if (start % 12 >= 6) then
-        start += @@rotation_odd_adder[direction]
-      else
-        start += @@rotation_even_adder[direction]
-      end
-      values += [ start ]
-    end
-
-    # some moves take you back to an existing location, we'll strip duplicates
-    values.uniq
-  end
-end
-
-# describes a piece and caches information about its rotations to as to be efficient for iteration
-# ATTRIBUTES:
-#   rotations -- all the rotations of the piece
-#   type -- a numeic "name" of the piece
-#   masks -- an array by location of all legal rotational masks (a n inner array) for that location
-#   placed -- the mask that this piece was last placed at (not a location, but the actual mask used)
-class Piece
-  attr_reader :rotations, :type, :masks
-  attr_accessor :placed
-
-  # transform hashes that change one direction into another when you either flip or rotate a set of directions
-  @@flip_converter = { :west => :west, :east => :east, :nw => :sw, :ne => :se, :sw => :nw, :se => :ne }
-  @@rotate_converter = { :west => :nw, :east => :se, :nw => :ne, :ne => :east, :sw => :west, :se => :sw }
-
-  def initialize( directions, type )
-    @type = type
-    @rotations = Array.new();
-    @map = {}
-
-    generate_rotations( directions )
-    directions.collect! { | value | @@flip_converter[value] }
-    generate_rotations( directions )
-
-    # creates the masks AND a map that returns [location, rotation] for any given mask
-    # this is used when a board is found and we want to draw it, otherwise the map is unused
-    @masks = Array.new();
-    0.upto(59) do | i |
-      even = true
-      @masks[i] = @rotations.collect do | rotation |
-        mask = rotation.start_masks[i]
-        @map[mask[0]] = [ i, rotation ] if (mask)
-        mask || nil
-      end
-      @masks[i].compact!
-    end
-  end
-
-  # rotates a set of directions through all six angles and adds a Rotation to the list for each one
-  def generate_rotations( directions )
-    6.times do
-      rotations.push( Rotation.new(directions))
-      directions.collect! { | value | @@rotate_converter[value] }
-    end
-  end
-
-  # given a board string, adds this piece to the board at whatever location/rotation
-  # important: the outbound board string is 5 wide, the normal location notation is six wide (padded)
-  def fill_string( board_string)
-    location, rotation = @map[@placed]
-    rotation.offsets(location).each do | offset |
-      row, col = offset.divmod(6)
-      board_string[ row*5 + col, 1 ] = @type.to_s
-    end
-  end
-end
-
-# a blank bit board having this form:
-#
-#    0 0 0 0 0 1
-#     0 0 0 0 0 1
-#    0 0 0 0 0 1
-#     0 0 0 0 0 1
-#    0 0 0 0 0 1
-#     0 0 0 0 0 1
-#    0 0 0 0 0 1
-#     0 0 0 0 0 1
-#    0 0 0 0 0 1
-#     0 0 0 0 0 1
-#    1 1 1 1 1 1
-#
-# where left lest significant bit is the top left and the most significant is the lower right
-# the actual board only consists of the 0 places, the 1 places are blockers to keep things from running
-# off the edges or bottom
-def blank_board
-  0b111111100000100000100000100000100000100000100000100000100000100000
-end
-
-def full_board
-  0b111111111111111111111111111111111111111111111111111111111111111111
-end
-
-# determines if a location (bit position) is in an even row
-def is_even( location)
-  (location % 12) < 6
-end
-
-# support function that create three utility maps:
-#  $converter -- for each row an array that maps a five bit row (via array mapping)
-#                to the a a five bit representation of the bits below it
-#  $bit_count -- maps a five bit row (via array mapping) to the number of 1s in the row
-#  @@new_regions -- maps a five bit row (via array mapping) to an array of "region" arrays
-#                   a region array has three values the first is a mask of bits in the region,
-#                   the second is the count of those bits and the third is identical to the first
-#                   examples:
-#                           0b10010 => [ 0b01100, 2, 0b01100 ], [ 0b00001, 1, 0b00001]
-#                           0b01010 => [ 0b10000, 1, 0b10000 ], [ 0b00100, 1, 0b00100 ], [ 0b00001, 1, 0b00001]
-#                           0b10001 => [ 0b01110, 3, 0b01110 ]
-def create_collector_support
-  odd_map = [0b11, 0b110, 0b1100, 0b11000, 0b10000]
-  even_map = [0b1, 0b11, 0b110, 0b1100, 0b11000]
-
-  all_odds = Array.new(0b100000)
-  all_evens = Array.new(0b100000)
-  bit_counts = Array.new(0b100000)
-  new_regions = Array.new(0b100000)
-  0.upto(0b11111) do | i |
-    bit_count = odd = even = 0
-    0.upto(4) do | bit |
-      if (i[bit] == 1) then
-        bit_count += 1
-        odd |= odd_map[bit]
-        even |= even_map[bit]
-      end
-    end
-    all_odds[i] = odd
-    all_evens[i] = even
-    bit_counts[i] = bit_count
-    new_regions[i] = create_regions( i)
-  end
-
-  $converter = []
-  10.times { | row | $converter.push((row % 2 == 0) ? all_evens : all_odds) }
-  $bit_counts = bit_counts
-  $regions = new_regions.collect { | set | set.collect { | value | [ value, bit_counts[value], value] } }
-end
-
-# determines if a board is punable, meaning that there is no possibility that it
-# can be filled up with pieces.  A board is prunable if there is a grouping of unfilled spaces
-# that are not a multiple of five.  The following board is an example of a prunable board:
-#    0 0 1 0 0
-#     0 1 0 0 0
-#    1 1 0 0 0
-#     0 1 0 0 0
-#    0 0 0 0 0
-#       ...
-#
-# This board is prunable because the top left corner is only 3 bits in area, no piece will ever fit it
-# parameters:
-#   board -- an initial bit board (6 bit padded rows, see blank_board for format)
-#   location -- starting location, everything above and to the left is already full
-#   slotting -- set to true only when testing initial pieces, when filling normally
-#               additional assumptions are possible
-#
-# Algorithm:
-#    The algorithm starts at the top row (as determined by location) and iterates a row at a time
-#    maintainng counts of active open areas (kept in the collector array) each collector contains
-#    three values at the start of an iteration:
-#          0: mask of bits that would be adjacent to the collector in this row
-#          1: the number of bits collected so far
-#          2: a scratch space starting as zero, but used during the computation to represent
-#             the empty bits in the new row that are adjacent (position 0)
-#  The exact procedure is described in-code
-def prunable( board, location, slotting = false)
-  collectors = []
-  # loop accross the rows
-  (location / 6).to_i.upto(9) do | row_on |
-    # obtain a set of regions representing the bits of the curent row.
-    regions = $regions[(board >> (row_on * 6)) & 0b11111]
-    converter = $converter[row_on]
-
-    # track the number of collectors at the start of the cycle so that
-    # we don't compute against newly created collectors, only existing collectors
-    initial_collector_count = collectors.length
-
-    # loop against the regions.  For each region of the row
-    # we will see if it connects to one or more existing collectors.
-    # if it connects to 1 collector, the bits from the region are added to the
-    # bits of the collector and the mask is placed in collector[2]
-    # If the region overlaps more than one collector then all the collectors
-    # it overlaps with are merged into the first one (the others are set to nil in the array)
-    # if NO collectors are found then the region is copied as a new collector
-    regions.each do | region |
-      collector_found = nil
-      region_mask = region[2]
-      initial_collector_count.times do | collector_num |
-        collector = collectors[collector_num]
-        if (collector) then
-          collector_mask = collector[0]
-          if (collector_mask & region_mask != 0) then
-            if (collector_found) then
-              collector_found[0] |= collector_mask
-              collector_found[1] += collector[1]
-              collector_found[2] |= collector[2]
-              collectors[collector_num] = nil
-            else
-              collector_found = collector
-              collector[1] += region[1]
-              collector[2] |= region_mask
-            end
-          end
-        end
-      end
-      if (collector_found == nil) then
-        collectors.push(Array.new(region))
-      end
-    end
-
-    # check the existing collectors, if any collector overlapped no bits in the region its [2] value will
-    # be zero.  The size of any such reaason is tested if it is not a muliple of five true is returned since
-    # the board is prunable.  if it is a multiple of five it is removed.
-    # Collector that are still active have a new adjacent value [0] set based n the matched bits
-    # and have [2] cleared out for the next cycle.
-    collectors.length.times do | collector_num |
-      collector = collectors[collector_num]
-      if (collector) then
-        if (collector[2] == 0) then
-          return true if (collector[1] % 5 != 0)
-          collectors[collector_num] = nil
-        else
-          # if a collector matches all bits in the row then we can return unprunable early for the
-          # follwing reasons:
-          #    1) there can be no more unavailable bits bince we fill from the top left downward
-          #    2) all previous regions have been closed or joined so only this region can fail
-          #    3) this region must be good since there can never be only 1 region that is nuot
-          #       a multiple of five
-          # this rule only applies when filling normally, so we ignore the rule if we are "slotting"
-          # in pieces to see what configurations work for them (the only other time this algorithm is used).
-          return false if (collector[2] == 0b11111 && !slotting)
-          collector[0] = converter[collector[2]]
-          collector[2] = 0
-        end
-      end
-    end
-
-    # get rid of all the empty converters for the next round
-    collectors.compact!
-  end
-  return false if (collectors.length <= 1) # 1 collector or less and the region is fine
-  collectors.any? { | collector | (collector[1] % 5) != 0 } # more than 1 and we test them all for bad size
-end
-
-# creates a region given a row mask.  see prunable for what a "region" is
-def create_regions( value )
-  regions = []
-  cur_region = 0
-  5.times do | bit |
-    if (value[bit] == 0) then
-      cur_region |= 1 << bit
-    else
-      if (cur_region != 0 ) then
-        regions.push( cur_region)
-        cur_region = 0;
-      end
-    end
-  end
-  regions.push(cur_region) if (cur_region != 0)
-  regions
-end
-
-# find up to the counted number of solutions (or all solutions) and prints the final result
-def find_all
-  find_top( 1)
-  find_top( 0)
-  print_results
-end
-
-# show the board
-def print_results
-  print "#{@boards_found} solutions found\n\n"
-  print_full_board( @min_board)
-  print "\n"
-  print_full_board( @max_board)
-  print "\n"
-end
-
-# finds solutions.  This special version of the main function is only used for the top level
-# the reason for it is basically to force a particular ordering on how the rotations are tested for
-# the first piece.  It is called twice, first looking for placements of the odd rotations and then
-# looking for placements of the even locations.
-#
-# WHY?
-#   Since any found solution has an inverse we want to maximize finding solutions that are not already found
-#   as an inverse.  The inverse will ALWAYS be 3 one of the piece configurations that is exactly 3 rotations away
-#   (an odd number).  Checking even vs odd then produces a higher probability of finding more pieces earlier
-#   in the cycle.  We still need to keep checking all the permutations, but our probability of finding one will
-#   diminsh over time.  Since we are TOLD how many to search for this lets us exit before checking all pieces
-#   this bennifit is very great when seeking small numbers of solutions and is 0 when looking for more than the
-#   maximum number
-def find_top( rotation_skip)
-  board = blank_board
-  (@pieces.length-1).times do
-    piece = @pieces.shift
-    piece.masks[0].each do | mask, imask, cmask |
-      if ((rotation_skip += 1) % 2 == 0) then
-        piece.placed = mask
-        find( 1, 1, board | mask)
-      end
-    end
-    @pieces.push(piece)
-  end
-  piece = @pieces.shift
-  @pieces.push(piece)
-end
-
-# the normail find routine, iterates through the available pieces, checks all rotations at the current location
-# and adds any boards found.  depth is acheived via recursion.  the overall approach is described
-# here: http://www-128.ibm.com/developerworks/java/library/j-javaopt/
-# parameters:
-#  start_location -- where to start looking for place for the next piece at
-#  placed -- number of pieces placed
-#  board -- current state of the board
-#
-# see in-code comments
-def find( start_location, placed, board)
-  # find the next location to place a piece by looking for an empty bit
-  while board[start_location] == 1
-    start_location += 1
-  end
-
-  @pieces.length.times do
-    piece = @pieces.shift
-    piece.masks[start_location].each do | mask, imask, cmask |
-      if ( board & cmask == imask) then
-        piece.placed = mask
-        if (placed == 9) then
-          add_board
-        else
-          find( start_location + 1, placed + 1, board | mask)
-        end
-      end
-    end
-    @pieces.push(piece)
-  end
-end
-
-# print the board
-def print_full_board( board_string)
-  10.times do | row |
-    print " " if (row % 2 == 1)
-    5.times do | col |
-      print "#{board_string[row*5 + col,1]} "
-    end
-    print "\n"
-  end
-end
-
-# when a board is found we "draw it" into a string and then flip that string, adding both to
-# the list (hash) of solutions if they are unique.
-def add_board
-  board_string = "99999999999999999999999999999999999999999999999999"
-  @all_pieces.each {  | piece | piece.fill_string( board_string ) }
-  save( board_string)
-  save( board_string.reverse)
-end
-
-# adds a board string to the list (if new) and updates the current best/worst board
-def save( board_string)
-  if (@all_boards[board_string] == nil) then
-    @min_board = board_string if (board_string < @min_board)
-    @max_board = board_string if (board_string > @max_board)
-    @all_boards.store(board_string,true)
-    @boards_found += 1
-
-    # the exit motif is a time saver.  Ideally the function should return, but those tests
-    # take noticable time (performance).
-    if (@boards_found == @stop_count) then
-      print_results
-      exit(0)
-    end
-  end
-end
-
-
-##
-## MAIN BODY :)
-##
-create_collector_support
-@pieces = [
-  Piece.new( [ :nw, :ne, :east, :east ], 2),
-  Piece.new( [ :ne, :se, :east, :ne ], 7),
-  Piece.new( [ :ne, :east, :ne, :nw ], 1),
-  Piece.new( [ :east, :sw, :sw, :se ], 6),
-  Piece.new( [ :east, :ne, :se, :ne ], 5),
-  Piece.new( [ :east, :east, :east, :se ], 0),
-  Piece.new( [ :ne, :nw, :se, :east, :se ], 4),
-  Piece.new( [ :se, :se, :se, :west ], 9),
-  Piece.new( [ :se, :se, :east, :se ], 8),
-  Piece.new( [ :east, :east, :sw, :se ], 3)
-  ];
-
-@all_pieces = Array.new( @pieces)
-
-@min_board = "99999999999999999999999999999999999999999999999999"
-@max_board = "00000000000000000000000000000000000000000000000000"
-@stop_count = ARGV[0].to_i || 2089
-@all_boards = {}
-@boards_found = 0
-
-find_all ######## DO IT!!!
-
diff --git a/benchmark/bm_so_nested_loop.rb b/benchmark/bm_so_nested_loop.rb
deleted file mode 100644
index a0513f8c47..0000000000
--- a/benchmark/bm_so_nested_loop.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: nestedloop-ruby.code,v 1.4 2004/11/13 07:42:22 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-# from Avi Bryant
-
-n = 16 # Integer(ARGV.shift || 1)
-x = 0
-n.times do
-    n.times do
-        n.times do
-            n.times do
-                n.times do
-                    n.times do
-                        x += 1
-                    end
-                end
-            end
-        end
-    end
-end
-# puts x
-
-
diff --git a/benchmark/bm_so_nsieve_bits.rb b/benchmark/bm_so_nsieve_bits.rb
deleted file mode 100644
index 019b8b6382..0000000000
--- a/benchmark/bm_so_nsieve_bits.rb
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/usr/bin/ruby
-#
-# The Great Computer Language Shootout
-# http://shootout.alioth.debian.org/
-#
-# nsieve-bits in Ruby
-# Contributed by Glenn Parker, March 2005
-
-CharExponent = 3
-BitsPerChar = 1 << CharExponent
-LowMask = BitsPerChar - 1
-
-def sieve(m)
-  items = "\xFF" * ((m / BitsPerChar) + 1)
-  masks = ""
-  BitsPerChar.times do |b|
-    masks << (1 << b).chr
-  end
-
-  count = 0
-  pmax = m - 1
-  2.step(pmax, 1) do |p|
-    if items[p >> CharExponent][p & LowMask] == 1
-      count += 1
-      p.step(pmax, p) do |mult|
-	a = mult >> CharExponent
-	b = mult & LowMask
-	items[a] -= masks[b] if items[a][b] != 0
-      end
-    end
-  end
-  count
-end
-
-n = 9 # (ARGV[0] || 2).to_i
-n.step(n - 2, -1) do |exponent|
-  break if exponent < 0
-  m = 2 ** exponent * 10_000
-  count = sieve(m)
-  printf "Primes up to %8d %8d\n", m, count
-end
-
diff --git a/benchmark/bm_so_object.rb b/benchmark/bm_so_object.rb
deleted file mode 100644
index e8607c7199..0000000000
--- a/benchmark/bm_so_object.rb
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/usr/bin/ruby
-# -*- mode: ruby -*-
-# $Id: objinst-ruby.code,v 1.4 2004/11/13 07:42:25 bfulgham Exp $
-# http://www.bagley.org/~doug/shootout/
-# with help from Aristarkh Zagorodnikov
-
-class Toggle
-    def initialize(start_state)
-        @bool = start_state
-    end
-
-    def value
-        @bool
-    end
-
-    def activate
-        @bool = !@bool
-        self
-    end
-end
-
-class NthToggle < Toggle
-    def initialize(start_state, max_counter)
-        super start_state
-        @count_max = max_counter
-        @counter = 0
-    end
-
-    def activate
-        @counter += 1
-        if @counter >= @count_max
-            @bool = !@bool
-            @counter = 0
-        end
-        self
-    end
-end
-
-n = 1500000 # (ARGV.shift || 1).to_i
-
-toggle = Toggle.new 1
-5.times do
-    toggle.activate.value ? 'true' : 'false'
-end
-n.times do
-    toggle = Toggle.new 1
-end
-
-ntoggle = NthToggle.new 1, 3
-8.times do
-    ntoggle.activate.value ? 'true' : 'false'
-end
-n.times do
-    ntoggle = NthToggle.new 1, 3
-end
-
diff --git a/benchmark/bm_so_pidigits.rb b/benchmark/bm_so_pidigits.rb
deleted file mode 100644
index c7d6fbfb4d..0000000000
--- a/benchmark/bm_so_pidigits.rb
+++ /dev/null
@@ -1,92 +0,0 @@
-# The Great Computer Language Shootout
-# http://shootout.alioth.debian.org/
-#
-# contributed by Gabriele Renzi
-
-class PiDigitSpigot
-
-    def initialize()
-        @z = Transformation.new 1,0,0,1
-        @x = Transformation.new 0,0,0,0
-        @inverse = Transformation.new 0,0,0,0
-    end
-
-    def next!
-        @y = @z.extract(3)
-        if safe? @y
-            @z = produce(@y)
-            @y
-        else
-            @z = consume @x.next!()
-            next!()
-        end
-    end
-
-    def safe?(digit)
-        digit == @z.extract(4)
-    end
-
-    def produce(i)
-        @inverse.qrst(10,-10*i,0,1).compose(@z)
-    end
-
-    def consume(a)
-        @z.compose(a)
-    end
-end
-
-
-class Transformation
-    attr_reader :q, :r, :s, :t
-    def initialize (q, r, s, t)
-        @q,@r,@s,@t,@k = q,r,s,t,0
-    end
-
-    def next!()
-        @q = @k = @k + 1
-        @r = 4 * @k + 2
-        @s = 0
-        @t = 2 * @k + 1
-        self
-    end
-
-    def extract(j)
-        (@q * j + @r) / (@s * j + @t)
-    end
-
-    def compose(a)
-        self.class.new( @q * a.q,
-                        @q * a.r + r * a.t,
-                        @s * a.q + t * a.s,
-                        @s * a.r + t * a.t
-                    )
-    end
-
-    def qrst *args
-        initialize *args
-        self
-    end
-
-
-end
-
-
-WIDTH = 10
-n = 2_500 # Integer(ARGV[0])
-j = 0
-
-digits = PiDigitSpigot.new
-
-while n > 0
-    if n >= WIDTH
-        WIDTH.times {print digits.next!}
-        j += WIDTH
-    else
-        n.times {print digits.next!}
-        (WIDTH-n).times {print " "}
-        j += n
-    end
-    puts "\t:"+j.to_s
-    n -= WIDTH
-end
-
diff --git a/benchmark/bm_so_random.rb b/benchmark/bm_so_random.rb
deleted file mode 100644
index 83c0d6d380..0000000000
--- a/benchmark/bm_so_random.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-# from http://www.bagley.org/~doug/shootout/bench/random/random.ruby
-
-IM = 139968.0
-IA = 3877.0
-IC = 29573.0
-
-$last = 42.0
-
-def gen_random(max)
-  (max * ($last = ($last * IA + IC) % IM)) / IM
-end
-
-N = 1000000
-
-i=0
-while i<N
-  i+=1
-  gen_random(100.0)
-end
-# "%.9f" % gen_random(100.0)
diff --git a/benchmark/bm_so_reverse_complement.rb b/benchmark/bm_so_reverse_complement.rb
deleted file mode 100644
index 82ea666994..0000000000
--- a/benchmark/bm_so_reverse_complement.rb
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/ruby
-# The Great Computer Language Shootout
-# http://shootout.alioth.debian.org/
-#
-# Contributed by Peter Bjarke Olsen
-# Modified by Doug King
-
-seq=Array.new
-
-def revcomp(seq)
-  seq.reverse!.tr!('wsatugcyrkmbdhvnATUGCYRKMBDHVN','WSTAACGRYMKVHDBNTAACGRYMKVHDBN')
-  stringlen=seq.length
-  0.step(stringlen-1,60) {|x| print seq.slice(x,60) , "\n"}
-end
-
-input = open(File.join(File.dirname($0), 'fasta.output.2500000'), 'rb')
-
-while input.gets
-  if $_ =~ />/
-    if seq.length != 0
-      revcomp(seq.join)
-      seq=Array.new
-    end
-    puts $_
-  else
-    $_.sub(/\n/,'')
-    seq.push $_
-  end
-end
-revcomp(seq.join)
diff --git a/benchmark/bm_so_sieve.rb b/benchmark/bm_so_sieve.rb
deleted file mode 100644
index dbe2bfa63d..0000000000
--- a/benchmark/bm_so_sieve.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-# from http://www.bagley.org/~doug/shootout/bench/sieve/sieve.ruby
-num = 40
-count = i = j = 0
-flags0 = Array.new(8192,1)
-k = 0
-while k < num
-  k+=1
-  count = 0
-  flags = flags0.dup
-  i = 2
-  while i<8192
-    i+=1
-    if flags[i]
-      # remove all multiples of prime: i
-      j = i*i
-      while j < 8192
-        j += i
-        flags[j] = nil
-      end
-      count += 1
-    end
-  end
-end
-count
diff --git a/benchmark/bm_vm1_block.rb b/benchmark/bm_vm1_block.rb
deleted file mode 100644
index 2dc4e72be5..0000000000
--- a/benchmark/bm_vm1_block.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-def m
-  yield
-end
-
-i=0
-while i<30000000 # while loop 1
-  i+=1
-  m{
-  }
-end
\ No newline at end of file
diff --git a/benchmark/bm_vm1_const.rb b/benchmark/bm_vm1_const.rb
deleted file mode 100644
index 3e395d9478..0000000000
--- a/benchmark/bm_vm1_const.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-Const = 1
-
-i = 0
-while i<30000000 # while loop 1
-  i+= 1
-  j = Const
-  k = Const
-end
diff --git a/benchmark/bm_vm1_ensure.rb b/benchmark/bm_vm1_ensure.rb
deleted file mode 100644
index c3b71ead5a..0000000000
--- a/benchmark/bm_vm1_ensure.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-i=0
-while i<30000000 # benchmark loop 1
-  i+=1
-  begin
-    begin
-    ensure
-    end
-  ensure
-  end
-end
-
diff --git a/benchmark/bm_vm1_ivar.rb b/benchmark/bm_vm1_ivar.rb
deleted file mode 100644
index 4de833a316..0000000000
--- a/benchmark/bm_vm1_ivar.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-@a = 1
-
-i = 0
-while i<30000000 # while loop 1
-  i+= 1
-  j = @a
-  k = @a
-end
diff --git a/benchmark/bm_vm1_ivar_set.rb b/benchmark/bm_vm1_ivar_set.rb
deleted file mode 100644
index c8076c6ab6..0000000000
--- a/benchmark/bm_vm1_ivar_set.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-i = 0
-while i<30_000_000 # while loop 1
-  i+= 1
-  @a = 1
-  @b = 2
-end
diff --git a/benchmark/bm_vm1_length.rb b/benchmark/bm_vm1_length.rb
deleted file mode 100644
index 2d7d7f0b52..0000000000
--- a/benchmark/bm_vm1_length.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-a = 'abc'
-b = [1, 2, 3]
-i=0
-while i<30000000 # while loop 1
-  i+=1
-  a.length
-  b.length
-end
-
diff --git a/benchmark/bm_vm1_neq.rb b/benchmark/bm_vm1_neq.rb
deleted file mode 100644
index 212f056c6e..0000000000
--- a/benchmark/bm_vm1_neq.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-i = 0
-obj1 = Object.new
-obj2 = Object.new
-
-while i<30000000 # while loop 1
-  i+= 1
-  obj1 != obj2
-end
diff --git a/benchmark/bm_vm1_not.rb b/benchmark/bm_vm1_not.rb
deleted file mode 100644
index f139fed8be..0000000000
--- a/benchmark/bm_vm1_not.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-i = 0
-obj = Object.new
-
-while i<30000000 # while loop 1
-  i+= 1
-  !obj
-end
diff --git a/benchmark/bm_vm1_rescue.rb b/benchmark/bm_vm1_rescue.rb
deleted file mode 100644
index 0c98d00e0d..0000000000
--- a/benchmark/bm_vm1_rescue.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-i=0
-while i<30000000 # while loop 1
-  i+=1
-  begin
-  rescue
-  end
-end
diff --git a/benchmark/bm_vm1_simplereturn.rb b/benchmark/bm_vm1_simplereturn.rb
deleted file mode 100644
index c843ee3d97..0000000000
--- a/benchmark/bm_vm1_simplereturn.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-def m
-  return 1
-end
-i=0
-while i<30000000 # while loop 1
-  i+=1
-  m
-end
-
diff --git a/benchmark/bm_vm1_swap.rb b/benchmark/bm_vm1_swap.rb
deleted file mode 100644
index a565b6f6dc..0000000000
--- a/benchmark/bm_vm1_swap.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-a = 1
-b = 2
-i=0
-while i<30000000 # while loop 1
-  i+=1
-  a, b = b, a
-end
-
diff --git a/benchmark/bm_vm2_array.rb b/benchmark/bm_vm2_array.rb
deleted file mode 100644
index e29c11200f..0000000000
--- a/benchmark/bm_vm2_array.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-i=0
-while i<6000000 # benchmark loop 2
-  i+=1
-  a = [1,2,3,4,5,6,7,8,9,10]
-end
diff --git a/benchmark/bm_vm2_case.rb b/benchmark/bm_vm2_case.rb
deleted file mode 100644
index 1ec34ad692..0000000000
--- a/benchmark/bm_vm2_case.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-i=0
-while i<6000000 # while loop 2
-  case :foo
-  when :bar
-    raise
-  when :baz
-    raise
-  when :boo
-    raise
-  when :foo
-    i+=1
-  end
-end
-
diff --git a/benchmark/bm_vm2_eval.rb b/benchmark/bm_vm2_eval.rb
deleted file mode 100644
index 375dccc00e..0000000000
--- a/benchmark/bm_vm2_eval.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-i=0
-while i<6000000 # benchmark loop 2
-  i+=1
-  eval("1")
-end
-
diff --git a/benchmark/bm_vm2_method.rb b/benchmark/bm_vm2_method.rb
deleted file mode 100644
index cc94b8ab3d..0000000000
--- a/benchmark/bm_vm2_method.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-def m
-  nil
-end
-
-i=0
-while i<6000000 # benchmark loop 2
-  i+=1
-  m; m; m; m; m; m; m; m;
-end
diff --git a/benchmark/bm_vm2_mutex.rb b/benchmark/bm_vm2_mutex.rb
deleted file mode 100644
index 9ec1a0f136..0000000000
--- a/benchmark/bm_vm2_mutex.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-require 'thread'
-
-m = Mutex.new
-
-i=0
-while i<6000000 # benchmark loop 2
-  i+=1
-  m.synchronize{}
-end
diff --git a/benchmark/bm_vm2_poly_method.rb b/benchmark/bm_vm2_poly_method.rb
deleted file mode 100644
index ac9953ce5f..0000000000
--- a/benchmark/bm_vm2_poly_method.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-class C1
-  def m
-    1
-  end
-end
-class C2
-  def m
-    2
-  end
-end
-
-o1 = C1.new
-o2 = C2.new
-
-i=0
-while i<6000000 # benchmark loop 2
-  o = (i % 2 == 0) ? o1 : o2
-  o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
-  i+=1
-end
diff --git a/benchmark/bm_vm2_poly_method_ov.rb b/benchmark/bm_vm2_poly_method_ov.rb
deleted file mode 100644
index 856ba9b161..0000000000
--- a/benchmark/bm_vm2_poly_method_ov.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-class C1
-  def m
-    1
-  end
-end
-class C2
-  def m
-    2
-  end
-end
-
-o1 = C1.new
-o2 = C2.new
-
-i=0
-while i<6000000 # benchmark loop 2
-  o = (i % 2 == 0) ? o1 : o2
-#  o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
-  i+=1
-end
diff --git a/benchmark/bm_vm2_proc.rb b/benchmark/bm_vm2_proc.rb
deleted file mode 100644
index 0bd05b9544..0000000000
--- a/benchmark/bm_vm2_proc.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-def m &b
-  b
-end
-
-pr = m{
-  a = 1
-}
-
-i=0
-while i<6000000 # benchmark loop 2
-  i+=1
-  pr.call
-end
-
diff --git a/benchmark/bm_vm2_regexp.rb b/benchmark/bm_vm2_regexp.rb
deleted file mode 100644
index 44f6ed402e..0000000000
--- a/benchmark/bm_vm2_regexp.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-i=0
-str = 'xxxhogexxx'
-while i<6000000 # benchmark loop 2
-  /hoge/ =~ str
-  i+=1
-end
diff --git a/benchmark/bm_vm2_send.rb b/benchmark/bm_vm2_send.rb
deleted file mode 100644
index c20dbdd26c..0000000000
--- a/benchmark/bm_vm2_send.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-class C
-  def m
-  end
-end
-
-o = C.new
-
-i=0
-while i<6000000 # benchmark loop 2
-  i+=1
-  o.__send__ :m
-end
diff --git a/benchmark/bm_vm2_super.rb b/benchmark/bm_vm2_super.rb
deleted file mode 100644
index 70c86b376f..0000000000
--- a/benchmark/bm_vm2_super.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-
-class C
-  def m
-    1
-  end
-end
-
-class CC < C
-  def m
-    super()
-  end
-end
-
-obj = CC.new
-
-i = 0
-while i<6000000 # benchmark loop 2
-  obj.m
-  i+=1
-end
diff --git a/benchmark/bm_vm2_unif1.rb b/benchmark/bm_vm2_unif1.rb
deleted file mode 100644
index e12bd2ade0..0000000000
--- a/benchmark/bm_vm2_unif1.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-i = 0
-def m a, b
-end
-
-while i<6000000 # benchmark loop 2
-  i+=1
-  m 100, 200
-end
diff --git a/benchmark/bm_vm2_zsuper.rb b/benchmark/bm_vm2_zsuper.rb
deleted file mode 100644
index 3a75960403..0000000000
--- a/benchmark/bm_vm2_zsuper.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-i = 0
-
-class C
-  def m a
-    1
-  end
-end
-
-class CC < C
-  def m a
-    super
-  end
-end
-
-obj = CC.new
-
-while i<6000000 # benchmark loop 2
-  obj.m 10
-  i+=1
-end
diff --git a/benchmark/bm_vm3_gc.rb b/benchmark/bm_vm3_gc.rb
deleted file mode 100755
index 7db9829d44..0000000000
--- a/benchmark/bm_vm3_gc.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-#! /usr/bin/ruby
-5000.times do
-  100.times do
-    {"xxxx"=>"yyyy"}
-  end
-  GC.start
-end
diff --git a/benchmark/bm_vm3_thread_create_join.rb b/benchmark/bm_vm3_thread_create_join.rb
deleted file mode 100644
index 325a66d587..0000000000
--- a/benchmark/bm_vm3_thread_create_join.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-i=0
-while i<100_000 # benchmark loop 3
-  i+=1
-  Thread.new{
-  }.join
-end
diff --git a/benchmark/bm_vm3_thread_mutex.rb b/benchmark/bm_vm3_thread_mutex.rb
deleted file mode 100644
index 649f1fddac..0000000000
--- a/benchmark/bm_vm3_thread_mutex.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-require 'thread'
-m = Mutex.new
-r = 0
-max = 1000
-(1..max).map{
-  Thread.new{
-    i=0
-    while i<max
-      i+=1
-      m.synchronize{
-        r += 1
-      }
-    end
-  }
-}.each{|e|
-  e.join
-}
-raise r.to_s if r != max * max
diff --git a/benchmark/bmx_temp.rb b/benchmark/bmx_temp.rb
deleted file mode 100644
index 0b4b219ca2..0000000000
--- a/benchmark/bmx_temp.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-def m
-  nil
-end
-
-i=0
-while i<800000 # benchmark loop 2
-  i+=1
-  m; m; m; m; m; m; m; m;
-end
diff --git a/benchmark/cgi_escape_html.yml b/benchmark/cgi_escape_html.yml
new file mode 100644
index 0000000000..af6abd08ac
--- /dev/null
+++ b/benchmark/cgi_escape_html.yml
@@ -0,0 +1,40 @@
+prelude: require 'cgi/escape'
+benchmark:
+  - name: escape_html_blank
+    prelude: str = ""
+    script: CGI.escapeHTML(str)
+    loop_count: 20000000
+  - name: escape_html_short_none
+    prelude: str = "abcde"
+    script: CGI.escapeHTML(str)
+    loop_count: 20000000
+  - name: escape_html_short_one
+    prelude: str = "abcd<"
+    script: CGI.escapeHTML(str)
+    loop_count: 20000000
+  - name: escape_html_short_all
+    prelude: str = "'&\"<>"
+    script: CGI.escapeHTML(str)
+    loop_count: 5000000
+  - name: escape_html_long_none
+    prelude: str = "abcde" * 300
+    script: CGI.escapeHTML(str)
+    loop_count: 1000000
+  - name: escape_html_long_all
+    prelude: str = "'&\"<>" * 10
+    script: CGI.escapeHTML(str)
+    loop_count: 1000000
+  - name: escape_html_real
+    prelude: | # http://example.com/
+      str = <<~HTML
+        <body>
+        <div>
+            <h1>Example Domain</h1>
+            <p>This domain is established to be used for illustrative examples in documents. You may use this
+            domain in examples without prior coordination or asking for permission.</p>
+            <p><a href="http://www.iana.org/domains/example">More information...</a></p>
+        </div>
+        </body>
+      HTML
+    script: CGI.escapeHTML(str)
+    loop_count: 1000000
diff --git a/benchmark/complex_float_add.yml b/benchmark/complex_float_add.yml
new file mode 100644
index 0000000000..d0150c5e5b
--- /dev/null
+++ b/benchmark/complex_float_add.yml
@@ -0,0 +1,7 @@
+prelude: |
+  max, min = 1000.0, -1000.0
+  a = Complex(rand(max)+min, rand(max)+min)
+  b = Complex(rand(max)+min, rand(max)+min)
+benchmark:
+  complex_float_add: c = a + b
+loop_count: 1000000
diff --git a/benchmark/complex_float_div.yml b/benchmark/complex_float_div.yml
new file mode 100644
index 0000000000..b9f5e1d51c
--- /dev/null
+++ b/benchmark/complex_float_div.yml
@@ -0,0 +1,7 @@
+prelude: |
+  max, min = 1000.0, -1000.0
+  a = Complex(rand(max)+min, rand(max)+min)
+  b = Complex(rand(max)+min, rand(max)+min)
+benchmark:
+  complex_float_div: c = a / b
+loop_count: 1000000
diff --git a/benchmark/complex_float_mul.yml b/benchmark/complex_float_mul.yml
new file mode 100644
index 0000000000..59b096a6dc
--- /dev/null
+++ b/benchmark/complex_float_mul.yml
@@ -0,0 +1,7 @@
+prelude: |
+  max, min = 1000.0, -1000.0
+  a = Complex(rand(max)+min, rand(max)+min)
+  b = Complex(rand(max)+min, rand(max)+min)
+benchmark:
+  complex_float_mul: c = a * b
+loop_count: 1000000
diff --git a/benchmark/complex_float_new.yml b/benchmark/complex_float_new.yml
new file mode 100644
index 0000000000..6fcde3125b
--- /dev/null
+++ b/benchmark/complex_float_new.yml
@@ -0,0 +1,7 @@
+prelude: |
+  max, min = 1000.0, -1000.0
+  a = Complex(rand(max)+min, rand(max)+min)
+  b = Complex(rand(max)+min, rand(max)+min)
+benchmark:
+  complex_float_new: c = Complex(a, b)
+loop_count: 1000000
diff --git a/benchmark/complex_float_power.yml b/benchmark/complex_float_power.yml
new file mode 100644
index 0000000000..c40a31ab55
--- /dev/null
+++ b/benchmark/complex_float_power.yml
@@ -0,0 +1,7 @@
+prelude: |
+  max, min = 1000.0, -1000.0
+  a = Complex(rand(max)+min, rand(max)+min)
+  b = Complex(rand(max)+min, rand(max)+min)
+benchmark:
+  complex_float_power: c = a ** b
+loop_count: 1000000
diff --git a/benchmark/complex_float_sub.yml b/benchmark/complex_float_sub.yml
new file mode 100644
index 0000000000..3fafe7cdbe
--- /dev/null
+++ b/benchmark/complex_float_sub.yml
@@ -0,0 +1,7 @@
+prelude: |
+  max, min = 1000.0, -1000.0
+  a = Complex(rand(max)+min, rand(max)+min)
+  b = Complex(rand(max)+min, rand(max)+min)
+benchmark:
+  complex_float_sub: c = a - b
+loop_count: 1000000
diff --git a/benchmark/dir_empty_p.rb b/benchmark/dir_empty_p.rb
new file mode 100644
index 0000000000..8329c757cf
--- /dev/null
+++ b/benchmark/dir_empty_p.rb
@@ -0,0 +1,5 @@
+require 'tmpdir'
+max = 100_000
+Dir.mktmpdir('bm_dir_empty_p') do |dir|
+  max.times { Dir.empty?(dir) }
+end
diff --git a/benchmark/driver.rb b/benchmark/driver.rb
deleted file mode 100644
index 4a1afe360b..0000000000
--- a/benchmark/driver.rb
+++ /dev/null
@@ -1,253 +0,0 @@
-#
-# Ruby Benchmark driver
-#
-
-first = true
-
-p RUBY_VERSION
-
-begin
-  require 'optparse'
-rescue LoadError
-  if first
-    first = false
-    $:.unshift File.join(File.dirname(__FILE__), '../lib')
-    retry
-  else
-    raise
-  end
-end
-
-require 'benchmark'
-require 'pp'
-
-class BenchmarkDriver
-  def self.benchmark(opt)
-    driver = self.new(opt[:execs], opt[:dir], opt)
-    begin
-      driver.run
-    ensure
-      driver.show_results
-    end
-  end
-
-  def output *args
-    puts(*args)
-    @output and @output.puts(*args)
-  end
-
-  def message *args
-    output(*args) if @verbose
-  end
-
-  def message_print *args
-    if @verbose
-      print(*args)
-      STDOUT.flush
-      @output and @output.print(*args)
-    end
-  end
-
-  def progress_message *args
-    unless STDOUT.tty?
-      STDERR.print(*args) 
-      STDERR.flush
-    end
-  end
-
-  def initialize execs, dir, opt = {}
-    @execs = execs.map{|e|
-      e.strip!
-      next if e.empty?
-
-      if /(.+)::(.+)/ =~ e
-        # ex) ruby-a::/path/to/ruby-a
-        v = $1.strip
-        e = $2
-      else
-        v =  `#{e} -v`.chomp
-        v.sub!(/ patchlevel \d+/, '')
-      end
-      [e, v]
-    }.compact
-
-    @dir = dir
-    @repeat = opt[:repeat] || 1
-    @repeat = 1 if @repeat < 1
-    @pattern = opt[:pattern] || nil
-    @verbose = opt[:quiet] ? false : (opt[:verbose] || false)
-    @output = opt[:output] ? open(opt[:output], 'w') : nil
-    @loop_wl1 = @loop_wl2 = nil
-    @opt = opt
-
-    # [[name, [[r-1-1, r-1-2, ...], [r-2-1, r-2-2, ...]]], ...]
-    @results = []
-
-    if @verbose
-      @start_time = Time.now
-      message @start_time
-      @execs.each_with_index{|(e, v), i|
-        message "target #{i}: #{v}"
-      }
-    end
-  end
-
-  def show_results
-    output
-
-    if @verbose
-      message '-----------------------------------------------------------'
-      message 'raw data:'
-      message
-      message PP.pp(@results, "", 79)
-      message
-      message "Elapesed time: #{Time.now - @start_time} (sec)"
-    end
-
-    output '-----------------------------------------------------------'
-    output 'benchmark results:'
-
-    if @verbose and @repeat > 1
-      output "minimum results in each #{@repeat} measurements."
-    end
-
-    output "name\t#{@execs.map{|(e, v)| v}.join("\t")}"
-    @results.each{|v, result|
-      rets = []
-      s = nil
-      result.each_with_index{|e, i|
-        r = e.min
-        case v
-        when /^vm1_/
-          if @loop_wl1
-            r -= @loop_wl1[i]
-            s = '*'
-          end
-        when /^vm2_/
-          if @loop_wl2
-            r -= @loop_wl2[i]
-            s = '*'
-          end
-        end
-        rets << sprintf("%.3f", r)
-      }
-      output "#{v}#{s}\t#{rets.join("\t")}"
-    }
-  end
-
-  def files
-    flag = {}
-    vm1 = vm2 = wl1 = wl2 = false
-    @files = Dir.glob(File.join(@dir, 'bm*.rb')).map{|file|
-      next if @pattern && /#{@pattern}/ !~ File.basename(file)
-      case file
-      when /bm_(vm[12])_/, /bm_loop_(whileloop2?).rb/
-        flag[$1] = true
-      end
-      file
-    }.compact
-
-    if flag['vm1'] && !flag['whileloop']
-      @files << File.join(@dir, 'bm_loop_whileloop.rb')
-    elsif flag['vm2'] && !flag['whileloop2']
-      @files << File.join(@dir, 'bm_loop_whileloop2.rb')
-    end
-
-    @files.sort!
-    progress_message "total: #{@files.size * @repeat} trial(s) (#{@repeat} trial(s) for #{@files.size} benchmark(s))\n"
-    @files
-  end
-
-  def run
-    files.each_with_index{|file, i|
-      @i = i
-      r = measure_file(file)
-
-      if /bm_loop_whileloop.rb/ =~ file
-        @loop_wl1 = r[1].map{|e| e.min}
-      elsif /bm_loop_whileloop2.rb/ =~ file
-        @loop_wl2 = r[1].map{|e| e.min}
-      end
-    }
-  end
-
-  def measure_file file
-    name = File.basename(file, '.rb').sub(/^bm_/, '')
-    prepare_file = File.join(File.dirname(file), "prepare_#{name}.rb")
-    load prepare_file if FileTest.exist?(prepare_file)
-
-    if @verbose
-      output
-      output '-----------------------------------------------------------'
-      output name
-      output
-      output File.read(file)
-      output
-    end
-
-    result = [name]
-    result << @execs.map{|(e, v)|
-      (0...@repeat).map{
-        message_print "#{v}\t"
-        progress_message '.'
-
-        m = measure(e, file)
-        message "#{m}"
-        m
-      }
-    }
-    @results << result
-    result
-  end
-
-  def measure executable, file
-    cmd = "#{executable} #{file}"
-    m = Benchmark.measure{
-      `#{cmd}`
-    }
-
-    if $? != 0
-      raise "Benchmark process exited with abnormal status (#{$?})"
-    end
-
-    m.real
-  end
-end
-
-if __FILE__ == $0
-  opt = {
-    :execs => ['ruby'],
-    :dir => './',
-    :repeat => 1,
-    :output => "bmlog-#{Time.now.strftime('%Y%m%d-%H%M%S')}.#{$$}",
-  }
-
-  parser = OptionParser.new{|o|
-    o.on('-e', '--executables [EXECS]',
-         "Specify benchmark one or more targets. (exec1; exec2; exec3, ...)"){|e|
-      opt[:execs] = e.split(/;/)
-    }
-    o.on('-d', '--directory [DIRECTORY]', "Benchmark suites directory"){|d|
-      opt[:dir] = d
-    }
-    o.on('-p', '--pattern [PATTERN]', "Benchmark name pattern"){|p|
-      opt[:pattern] = p
-    }
-    o.on('-r', '--repeat-count [NUM]', "Repeat count"){|n|
-      opt[:repeat] = n.to_i
-    }
-    o.on('-o', '--output-file [FILE]', "Output file"){|o|
-      opt[:output] = o
-    }
-    o.on('-q', '--quiet', "Run without notify information except result table."){|q|
-      opt[:quiet] = q
-    }
-    o.on('-v', '--verbose'){|v|
-      opt[:verbose] = v
-    }
-  }
-
-  parser.parse!(ARGV)
-  BenchmarkDriver.benchmark(opt)
-end
-
diff --git a/benchmark/enum_lazy_flat_map.yml b/benchmark/enum_lazy_flat_map.yml
new file mode 100644
index 0000000000..0ee390a441
--- /dev/null
+++ b/benchmark/enum_lazy_flat_map.yml
@@ -0,0 +1,16 @@
+prelude: |
+  num = (1..).lazy.take(100)
+  ary2 = [[1,2]].cycle.lazy.take(10)
+  ary10 = [[*1..10]].cycle.lazy.take(10)
+  ary20 = [[*1..20]].cycle.lazy.take(10)
+  ary50 = [[*1..50]].cycle.lazy.take(10)
+  ary100 = [[*1..100]].cycle.lazy.take(10)
+
+benchmark:
+  num3: num.flat_map {|x| x}.take(3).to_a
+  num10: num.flat_map {|x| x}.take(3).to_a
+  ary2:  ary2.flat_map {|x| x}.take(3).to_a
+  ary10: ary10.flat_map {|x| x}.take(3).to_a
+  ary20: ary20.flat_map {|x| x}.take(3).to_a
+  ary50: ary50.flat_map {|x| x}.take(3).to_a
+  ary100: ary100.flat_map {|x| x}.take(3).to_a
diff --git a/benchmark/enum_lazy_grep_v_100.rb b/benchmark/enum_lazy_grep_v_100.rb
new file mode 100644
index 0000000000..8832392e65
--- /dev/null
+++ b/benchmark/enum_lazy_grep_v_100.rb
@@ -0,0 +1,4 @@
+grep_data = (1..10).to_a * 1000
+N = 100
+enum = grep_data.lazy.grep_v(->(i){i == 0}).grep_v(->(i){i == 0})
+N.times {enum.each {}}
diff --git a/benchmark/enum_lazy_grep_v_20.rb b/benchmark/enum_lazy_grep_v_20.rb
new file mode 100644
index 0000000000..329509fa8f
--- /dev/null
+++ b/benchmark/enum_lazy_grep_v_20.rb
@@ -0,0 +1,4 @@
+grep_data = (1..10).to_a * 1000
+N = 100
+enum = grep_data.lazy.grep_v(->(i){i > 2}).grep_v(->(i){i > 2})
+N.times {enum.each {}}
diff --git a/benchmark/enum_lazy_grep_v_50.rb b/benchmark/enum_lazy_grep_v_50.rb
new file mode 100644
index 0000000000..02ea4d4e71
--- /dev/null
+++ b/benchmark/enum_lazy_grep_v_50.rb
@@ -0,0 +1,4 @@
+grep_data = (1..10).to_a * 1000
+N = 100
+enum = grep_data.lazy.grep_v(->(i){i > 5}).grep_v(->(i){i > 5})
+N.times {enum.each {}}
diff --git a/benchmark/enum_lazy_uniq_100.rb b/benchmark/enum_lazy_uniq_100.rb
new file mode 100644
index 0000000000..2e6434d9c4
--- /dev/null
+++ b/benchmark/enum_lazy_uniq_100.rb
@@ -0,0 +1,4 @@
+uniq_data = (1..10_000).to_a
+N = 100
+enum = uniq_data.lazy.uniq {|i| i % 10000}.uniq {|i| i % 10000}
+N.times {enum.each {}}
diff --git a/benchmark/enum_lazy_uniq_20.rb b/benchmark/enum_lazy_uniq_20.rb
new file mode 100644
index 0000000000..75e6398fee
--- /dev/null
+++ b/benchmark/enum_lazy_uniq_20.rb
@@ -0,0 +1,4 @@
+uniq_data = (1..10_000).to_a
+N = 100
+enum = uniq_data.lazy.uniq {|i| i % 2000}.uniq {|i| i % 2000}
+N.times {enum.each {}}
diff --git a/benchmark/enum_lazy_uniq_50.rb b/benchmark/enum_lazy_uniq_50.rb
new file mode 100644
index 0000000000..59a39b78ff
--- /dev/null
+++ b/benchmark/enum_lazy_uniq_50.rb
@@ -0,0 +1,4 @@
+uniq_data = (1..10_000).to_a
+N = 100
+enum = uniq_data.lazy.uniq {|i| i % 5000}.uniq {|i| i % 5000}
+N.times {enum.each {}}
diff --git a/benchmark/enum_lazy_zip.yml b/benchmark/enum_lazy_zip.yml
new file mode 100644
index 0000000000..4566ff0261
--- /dev/null
+++ b/benchmark/enum_lazy_zip.yml
@@ -0,0 +1,22 @@
+prelude: |
+  a = (1..3).lazy
+  b = a.map {|x| x}
+
+benchmark:
+  first_ary: a.zip(["a", "b", "c"]).first
+  first_nonary: a.zip("a".."c").first
+  first_noarg: a.zip.first
+
+  take3_ary: a.zip(["a", "b", "c"]).take(3).force
+  take3_nonary: a.zip("a".."c").take(3).force
+  take3_noarg: a.zip.take(3).force
+
+  chain-first_ary: b.zip(["a", "b", "c"]).first
+  chain-first_nonary: b.zip("a".."c").first
+  chain-first_noarg: b.zip.first
+
+  chain-take3_ary: b.zip(["a", "b", "c"]).take(3).force
+  chain-take3_nonary: b.zip("a".."c").take(3).force
+  chain-take3_noarg: b.zip.take(3).force
+
+  block: a.zip("a".."c") {|x, y| [x, y]}
diff --git a/benchmark/erb_render.yml b/benchmark/erb_render.yml
new file mode 100644
index 0000000000..15f6c3880b
--- /dev/null
+++ b/benchmark/erb_render.yml
@@ -0,0 +1,24 @@
+prelude: |
+  require 'erb'
+
+  data = <<erb
+  <html>
+    <head> <%= title %> </head>
+    <body>
+      <h1> <%= title %> </h1>
+      <p>
+        <%= content %>
+      </p>
+    </body>
+  </html>
+  erb
+
+  title = "hello world!"
+  content = "hello world!\n" * 10
+
+  src = "def self.render(title, content); #{ERB.new(data).src}; end"
+  mod = Module.new
+  mod.instance_eval(src, "(ERB)")
+benchmark:
+  erb_render: mod.render(title, content)
+loop_count: 1500000
diff --git a/benchmark/fiber_chain.yml b/benchmark/fiber_chain.yml
new file mode 100644
index 0000000000..a36c759f8e
--- /dev/null
+++ b/benchmark/fiber_chain.yml
@@ -0,0 +1,36 @@
+prelude: |
+  def make_link(previous)
+    Fiber.new do
+      while message = previous.resume
+        Fiber.yield(message)
+      end
+    end
+  end
+
+  def make_chain(length = 1000, &block)
+    chain = Fiber.new(&block)
+
+    (length - 1).times do
+      chain = make_link(chain)
+    end
+
+    return chain
+  end
+
+  message = "Hello World!"
+
+  chain = make_chain do
+    while true
+      Fiber.yield(message)
+    end
+  end
+benchmark:
+  make_chain: |
+    make_chain(100) do
+      while true
+        Fiber.yield(message)
+      end
+    end
+  resume_chain: |
+    chain.resume
+loop_count: 5000
diff --git a/benchmark/fiber_locals.yml b/benchmark/fiber_locals.yml
new file mode 100644
index 0000000000..8588686477
--- /dev/null
+++ b/benchmark/fiber_locals.yml
@@ -0,0 +1,8 @@
+prelude: |
+  th = Thread.current
+  th[:key] = :val
+benchmark:
+  key?: th.key?(:key)
+  []: th[:key]
+  keys: th.keys
+loop_count: 1_000_000
diff --git a/benchmark/file_chmod.rb b/benchmark/file_chmod.rb
new file mode 100644
index 0000000000..1cd4760c9d
--- /dev/null
+++ b/benchmark/file_chmod.rb
@@ -0,0 +1,9 @@
+# chmod file
+require 'tempfile'
+max = 200_000
+tmp = Tempfile.new('chmod')
+path = tmp.path
+max.times do
+  File.chmod(0777, path)
+end
+tmp.close!
diff --git a/benchmark/file_rename.rb b/benchmark/file_rename.rb
new file mode 100644
index 0000000000..bbb44aebac
--- /dev/null
+++ b/benchmark/file_rename.rb
@@ -0,0 +1,11 @@
+# rename file
+require 'tempfile'
+
+max = 100_000
+tmp = [ Tempfile.new('rename-a'), Tempfile.new('rename-b') ]
+a, b = tmp.map { |x| x.path }
+tmp.each { |t| t.close } # Windows can't rename files without closing them
+max.times do
+  File.rename(a, b)
+  File.rename(b, a)
+end
diff --git a/benchmark/gc/aobench.rb b/benchmark/gc/aobench.rb
new file mode 100644
index 0000000000..275f58b924
--- /dev/null
+++ b/benchmark/gc/aobench.rb
@@ -0,0 +1 @@
+require_relative '../app_aobench'
diff --git a/benchmark/gc/binary_trees.rb b/benchmark/gc/binary_trees.rb
new file mode 100644
index 0000000000..83347cdd20
--- /dev/null
+++ b/benchmark/gc/binary_trees.rb
@@ -0,0 +1 @@
+require_relative '../so_binary_trees'
diff --git a/benchmark/gc/gcbench.rb b/benchmark/gc/gcbench.rb
new file mode 100644
index 0000000000..23d0b91c6c
--- /dev/null
+++ b/benchmark/gc/gcbench.rb
@@ -0,0 +1,57 @@
+require 'benchmark'
+require 'pp'
+require 'optparse'
+
+$list = true
+$gcprof = false
+
+opt = OptionParser.new
+opt.on('-q'){$list = false}
+opt.on('-d'){$gcprof = false}
+opt.on('-p'){$gcprof = true}
+opt.parse!(ARGV)
+
+script = File.join(File.dirname(__FILE__), ARGV.shift)
+script += '.rb' unless FileTest.exist?(script)
+raise "#{script} not found" unless FileTest.exist?(script)
+
+puts "Script: #{script}"
+
+if $gcprof
+  GC::Profiler.enable
+end
+
+tms = Benchmark.measure{|x|
+  load script
+}
+
+gc_time = 0
+
+if $gcprof
+  gc_time = GC::Profiler.total_time
+  GC::Profiler.report if $list and RUBY_VERSION >= '2.0.0' # before 1.9.3, report() may run infinite loop
+  GC::Profiler.disable
+end
+
+pp GC.stat
+
+puts "#{RUBY_DESCRIPTION} #{GC::OPTS.inspect}" if defined?(GC::OPTS)
+
+desc = "#{RUBY_VERSION}#{RUBY_PATCHLEVEL >= 0 ? "p#{RUBY_PATCHLEVEL}" : "dev"}"
+name = File.basename(script, '.rb')
+
+puts
+puts script
+puts Benchmark::CAPTION
+puts tms
+puts "GC total time (sec): #{gc_time}"
+
+# show High-Water Mark on Linux
+if File.exist?('/proc/self/status') && /VmHWM:\s*(\d+.+)/ =~ File.read('/proc/self/status')
+  puts
+  puts "VmHWM: #{$1.chomp}"
+end
+
+puts
+puts "Summary of #{name} on #{desc}\t#{tms.real}\t#{gc_time}\t#{GC.count}"
+puts "         (real time in sec, GC time in sec, GC count)"
diff --git a/benchmark/gc/hash1.rb b/benchmark/gc/hash1.rb
new file mode 100644
index 0000000000..cb030d458d
--- /dev/null
+++ b/benchmark/gc/hash1.rb
@@ -0,0 +1,11 @@
+value = 0.01
+h = {}
+n = 50_000
+
+1.upto(n){|i|
+  h["%020d" % i] = "v-#{i}"
+}
+
+(n * 1_000).times{
+  ''
+}
diff --git a/benchmark/gc/hash2.rb b/benchmark/gc/hash2.rb
new file mode 100644
index 0000000000..e8c943fb21
--- /dev/null
+++ b/benchmark/gc/hash2.rb
@@ -0,0 +1,7 @@
+value = 0.01
+h = {}
+n = 4*(10**6)
+
+1.upto(n){|i|
+  h["%020d" % i] = value * i
+}
diff --git a/benchmark/gc/null.rb b/benchmark/gc/null.rb
new file mode 100644
index 0000000000..c05a79f561
--- /dev/null
+++ b/benchmark/gc/null.rb
@@ -0,0 +1 @@
+# null
diff --git a/benchmark/gc/pentomino.rb b/benchmark/gc/pentomino.rb
new file mode 100644
index 0000000000..8ebdff7d1d
--- /dev/null
+++ b/benchmark/gc/pentomino.rb
@@ -0,0 +1 @@
+require_relative '../app_pentomino'
diff --git a/benchmark/gc/rdoc.rb b/benchmark/gc/rdoc.rb
new file mode 100644
index 0000000000..14c89f5611
--- /dev/null
+++ b/benchmark/gc/rdoc.rb
@@ -0,0 +1,13 @@
+require 'rdoc/rdoc'
+require 'tmpdir'
+
+srcdir = File.expand_path('../..', __dir__)
+
+Dir.mktmpdir('rdocbench-'){|d|
+  dir = File.join(d, 'rdocbench')
+  args = %W(--root #{srcdir} --page-dir #{srcdir}/doc --encoding=UTF-8 --no-force-update --all --ri --debug --quiet #{srcdir})
+  args << '--op' << dir
+
+  r = RDoc::RDoc.new
+  r.document args
+}
diff --git a/benchmark/gc/redblack.rb b/benchmark/gc/redblack.rb
new file mode 100644
index 0000000000..c66290140a
--- /dev/null
+++ b/benchmark/gc/redblack.rb
@@ -0,0 +1,366 @@
+# This benchmark is imported from https://github.com/jruby/rubybench/blob/master/time/bench_red_black.rb
+# License is License is Apache-2
+
+require 'benchmark'
+
+# Algorithm based on "Introduction to Algorithms" by Cormen and others
+class RedBlackTree
+  class Node
+    attr_accessor :color
+    attr_accessor :key
+    attr_accessor :left
+    attr_accessor :right
+    attr_accessor :parent
+
+    RED = :red
+    BLACK = :black
+    COLORS = [RED, BLACK].freeze
+
+    def initialize(key, color = RED)
+      raise ArgumentError, "Bad value for color parameter" unless COLORS.include?(color)
+      @color = color
+      @key = key
+      @left = @right = @parent = NilNode.instance
+    end
+
+    def black?
+      return color == BLACK
+    end
+
+    def red?
+      return color == RED
+    end
+  end
+
+  class NilNode < Node
+    class << self
+      private :new
+
+      # it's not thread safe
+      def instance
+        @instance ||= begin
+          def instance
+            return @instance
+          end
+
+          new
+        end
+      end
+    end
+
+    def initialize
+      self.color = BLACK
+      self.key = 0
+      self.left = nil
+      self.right = nil
+      self.parent = nil
+    end
+
+    def nil?
+      return true
+    end
+  end
+
+  include Enumerable
+
+  attr_accessor :root
+  attr_accessor :size
+
+  def initialize
+    self.root = NilNode.instance
+    self.size = 0
+  end
+
+  def add(key)
+    insert(Node.new(key))
+  end
+
+  def insert(x)
+    insert_helper(x)
+
+    x.color = Node::RED
+    while x != root && x.parent.color == Node::RED
+      if x.parent == x.parent.parent.left
+        y = x.parent.parent.right
+        if !y.nil? && y.color == Node::RED
+          x.parent.color = Node::BLACK
+          y.color = Node::BLACK
+          x.parent.parent.color = Node::RED
+          x = x.parent.parent
+        else
+          if x == x.parent.right
+            x = x.parent
+            left_rotate(x)
+          end
+          x.parent.color = Node::BLACK
+          x.parent.parent.color = Node::RED
+          right_rotate(x.parent.parent)
+        end
+      else
+        y = x.parent.parent.left
+        if !y.nil? && y.color == Node::RED
+          x.parent.color = Node::BLACK
+          y.color = Node::BLACK
+          x.parent.parent.color = Node::RED
+          x = x.parent.parent
+        else
+          if x == x.parent.left
+            x = x.parent
+            right_rotate(x)
+          end
+          x.parent.color = Node::BLACK
+          x.parent.parent.color = Node::RED
+          left_rotate(x.parent.parent)
+        end
+      end
+    end
+    root.color = Node::BLACK
+  end
+
+  alias << insert
+
+  def delete(z)
+    y = (z.left.nil? || z.right.nil?) ? z : successor(z)
+    x = y.left.nil? ? y.right : y.left
+    x.parent = y.parent
+
+    if y.parent.nil?
+      self.root = x
+    else
+      if y == y.parent.left
+        y.parent.left = x
+      else
+        y.parent.right = x
+      end
+    end
+
+    z.key = y.key if y != z
+
+    if y.color == Node::BLACK
+      delete_fixup(x)
+    end
+
+    self.size -= 1
+    return y
+  end
+
+  def minimum(x = root)
+    while !x.left.nil?
+      x = x.left
+    end
+    return x
+  end
+
+  def maximum(x = root)
+    while !x.right.nil?
+      x = x.right
+    end
+    return x
+  end
+
+  def successor(x)
+    if !x.right.nil?
+      return minimum(x.right)
+    end
+    y = x.parent
+    while !y.nil? && x == y.right
+      x = y
+      y = y.parent
+    end
+    return y
+  end
+
+  def predecessor(x)
+    if !x.left.nil?
+      return maximum(x.left)
+    end
+    y = x.parent
+    while !y.nil? && x == y.left
+      x = y
+      y = y.parent
+    end
+    return y
+  end
+
+  def inorder_walk(x = root)
+    x = self.minimum
+    while !x.nil?
+      yield x.key
+      x = successor(x)
+    end
+  end
+
+  alias each inorder_walk
+
+  def reverse_inorder_walk(x = root)
+    x = self.maximum
+    while !x.nil?
+      yield x.key
+      x = predecessor(x)
+    end
+  end
+
+  alias reverse_each reverse_inorder_walk
+
+  def search(key, x = root)
+    while !x.nil? && x.key != key
+      key < x.key ? x = x.left : x = x.right
+    end
+    return x
+  end
+
+  def empty?
+    return self.root.nil?
+  end
+
+  def black_height(x = root)
+    height = 0
+    while !x.nil?
+      x = x.left
+      height +=1 if x.nil? || x.black?
+    end
+    return height
+  end
+
+private
+
+  def left_rotate(x)
+    raise "x.right is nil!" if x.right.nil?
+    y = x.right
+    x.right = y.left
+    y.left.parent = x if !y.left.nil?
+    y.parent = x.parent
+    if x.parent.nil?
+      self.root = y
+    else
+      if x == x.parent.left
+        x.parent.left = y
+      else
+        x.parent.right = y
+      end
+    end
+    y.left = x
+    x.parent = y
+  end
+
+  def right_rotate(x)
+    raise "x.left is nil!" if x.left.nil?
+    y = x.left
+    x.left = y.right
+    y.right.parent = x if !y.right.nil?
+    y.parent = x.parent
+    if x.parent.nil?
+      self.root = y
+    else
+      if x == x.parent.left
+        x.parent.left = y
+      else
+        x.parent.right = y
+      end
+    end
+    y.right = x
+    x.parent = y
+  end
+
+  def insert_helper(z)
+    y = NilNode.instance
+    x = root
+    while !x.nil?
+      y = x
+      z.key < x.key ? x = x.left : x = x.right
+    end
+    z.parent = y
+    if y.nil?
+      self.root = z
+    else
+      z.key < y.key ? y.left = z : y.right = z
+    end
+    self.size += 1
+  end
+
+  def delete_fixup(x)
+    while x != root && x.color == Node::BLACK
+      if x == x.parent.left
+        w = x.parent.right
+        if w.color == Node::RED
+          w.color = Node::BLACK
+          x.parent.color = Node::RED
+          left_rotate(x.parent)
+          w = x.parent.right
+        end
+        if w.left.color == Node::BLACK && w.right.color == Node::BLACK
+          w.color = Node::RED
+          x = x.parent
+        else
+          if w.right.color == Node::BLACK
+            w.left.color = Node::BLACK
+            w.color = Node::RED
+            right_rotate(w)
+            w = x.parent.right
+          end
+          w.color = x.parent.color
+          x.parent.color = Node::BLACK
+          w.right.color = Node::BLACK
+          left_rotate(x.parent)
+          x = root
+        end
+      else
+        w = x.parent.left
+        if w.color == Node::RED
+          w.color = Node::BLACK
+          x.parent.color = Node::RED
+          right_rotate(x.parent)
+          w = x.parent.left
+        end
+        if w.right.color == Node::BLACK && w.left.color == Node::BLACK
+          w.color = Node::RED
+          x = x.parent
+        else
+          if w.left.color == Node::BLACK
+            w.right.color = Node::BLACK
+            w.color = Node::RED
+            left_rotate(w)
+            w = x.parent.left
+          end
+          w.color = x.parent.color
+          x.parent.color = Node::BLACK
+          w.left.color = Node::BLACK
+          right_rotate(x.parent)
+          x = root
+        end
+      end
+    end
+    x.color = Node::BLACK
+  end
+end
+
+def rbt_bm
+  n = 100_000
+  a1 = []; n.times { a1 << rand(999_999) }
+  a2 = []; n.times { a2 << rand(999_999) }
+
+  start = Time.now
+
+  tree = RedBlackTree.new
+
+  n.times {|i| tree.add(i) }
+  n.times { tree.delete(tree.root) }
+
+  tree = RedBlackTree.new
+  a1.each {|e| tree.add(e) }
+  a2.each {|e| tree.search(e) }
+  tree.inorder_walk {|key| key + 1 }
+  tree.reverse_inorder_walk {|key| key + 1 }
+  n.times { tree.minimum }
+  n.times { tree.maximum }
+
+  return Time.now - start
+end
+
+N = (ARGV[0] || 10).to_i
+
+N.times do
+  # puts rbt_bm.to_f
+  rbt_bm.to_f
+  # puts "GC.count = #{GC.count}" if GC.respond_to?(:count)
+end
diff --git a/benchmark/gc/ring.rb b/benchmark/gc/ring.rb
new file mode 100644
index 0000000000..be2c7b7250
--- /dev/null
+++ b/benchmark/gc/ring.rb
@@ -0,0 +1,29 @@
+# create many old objects
+
+max = 30_000_000
+
+class Ring
+  attr_reader :next_ring
+  def initialize n = nil
+    @next_ring = n
+  end
+
+
+  def size
+    s = 1
+    ring = self
+    while ring.next_ring
+      s += 1
+      ring = ring.next_ring
+    end
+    s
+  end
+end
+
+ring = Ring.new
+
+max.times{
+  ring = Ring.new(ring)
+}
+
+# p ring.size
diff --git a/benchmark/hash_aref_dsym.rb b/benchmark/hash_aref_dsym.rb
new file mode 100644
index 0000000000..af4f8c36d4
--- /dev/null
+++ b/benchmark/hash_aref_dsym.rb
@@ -0,0 +1,4 @@
+h = {}
+syms = ('a'..'z').map { |s| s.to_sym }
+syms.each { |s| h[s] = 1 }
+200_000.times { syms.each { |s| h[s] } }
diff --git a/benchmark/hash_aref_dsym_long.rb b/benchmark/hash_aref_dsym_long.rb
new file mode 100644
index 0000000000..9d7759379e
--- /dev/null
+++ b/benchmark/hash_aref_dsym_long.rb
@@ -0,0 +1,21 @@
+# [ruby-core:70129] [Bug #11396]
+collection_size = 200000
+sample_size = 10000
+
+values = (1..collection_size).to_a.map do |x|
+  "THIS IS A LONGER STRING THAT IS ALSO UNIQUE #{x}"
+end
+
+symbol_hash = {}
+
+values.each do |x|
+  symbol_hash[x.to_sym] = 1
+end
+
+# use the same samples each time to minimize deviations
+rng = Random.new(0)
+symbol_sample_array = values.sample(sample_size, random: rng).map(&:to_sym)
+
+3000.times do
+  symbol_sample_array.each { |x| symbol_hash[x] }
+end
diff --git a/benchmark/hash_aref_fix.rb b/benchmark/hash_aref_fix.rb
new file mode 100644
index 0000000000..1346890582
--- /dev/null
+++ b/benchmark/hash_aref_fix.rb
@@ -0,0 +1,4 @@
+h = {}
+nums = (1..26).to_a
+nums.each { |i| h[i] = i }
+200_000.times { nums.each { |s| h[s] } }
diff --git a/benchmark/hash_aref_flo.rb b/benchmark/hash_aref_flo.rb
new file mode 100644
index 0000000000..2217274c82
--- /dev/null
+++ b/benchmark/hash_aref_flo.rb
@@ -0,0 +1,4 @@
+h = {}
+strs = [*1..10000].map! {|i| i.fdiv(10)}
+strs.each { |s| h[s] = s }
+50.times { strs.each { |s| h[s] } }
diff --git a/benchmark/hash_aref_miss.rb b/benchmark/hash_aref_miss.rb
new file mode 100644
index 0000000000..b0913dd4bb
--- /dev/null
+++ b/benchmark/hash_aref_miss.rb
@@ -0,0 +1,5 @@
+h = {}
+strs = ('a'..'z').to_a.map!(&:freeze)
+strs.each { |s| h[s] = s }
+strs = ('A'..'Z').to_a
+200_000.times { strs.each { |s| h[s] } }
diff --git a/benchmark/hash_aref_str.rb b/benchmark/hash_aref_str.rb
new file mode 100644
index 0000000000..19439b061b
--- /dev/null
+++ b/benchmark/hash_aref_str.rb
@@ -0,0 +1,4 @@
+h = {}
+strs = ('a'..'z').to_a.map!(&:freeze)
+strs.each { |s| h[s] = s }
+200_000.times { strs.each { |s| h[s] } }
diff --git a/benchmark/hash_aref_sym.rb b/benchmark/hash_aref_sym.rb
new file mode 100644
index 0000000000..f75d163fe6
--- /dev/null
+++ b/benchmark/hash_aref_sym.rb
@@ -0,0 +1,9 @@
+h = {}
+syms = ('a'..'z').to_a
+begin
+  syms = eval("%i[#{syms.join(' ')}]")
+rescue SyntaxError # <= 1.9.3
+  syms.map!(&:to_sym)
+end
+syms.each { |s| h[s] = s }
+200_000.times { syms.each { |s| h[s] } }
diff --git a/benchmark/hash_aref_sym_long.rb b/benchmark/hash_aref_sym_long.rb
new file mode 100644
index 0000000000..9dab8df7be
--- /dev/null
+++ b/benchmark/hash_aref_sym_long.rb
@@ -0,0 +1,13 @@
+h = {}
+syms = %w[puts warn syswrite write stat bacon lettuce tomato
+some symbols in this array may already be interned  others should not be
+hash browns make good breakfast but not cooked using prime numbers
+shift for division entries delete_if keys exist?
+]
+begin
+  syms = eval("%i[#{syms.join(' ')}]")
+rescue SyntaxError # <= 1.9.3
+  syms.map!(&:to_sym)
+end
+syms.each { |s| h[s] = s }
+200_000.times { syms.each { |s| h[s] } }
diff --git a/benchmark/hash_defaults.yml b/benchmark/hash_defaults.yml
new file mode 100644
index 0000000000..833f10e1c7
--- /dev/null
+++ b/benchmark/hash_defaults.yml
@@ -0,0 +1,6 @@
+prelude: |
+  h = Hash.new { :foo }
+benchmark:
+  default_aref: h[1]
+  default_method: h.default(1)
+loop_count: 1000000
diff --git a/benchmark/hash_dup.yml b/benchmark/hash_dup.yml
new file mode 100644
index 0000000000..65f521ec94
--- /dev/null
+++ b/benchmark/hash_dup.yml
@@ -0,0 +1,8 @@
+prelude: |
+  small_hash = { a: 1 }
+  larger_hash = 20.times.map { |i| [('a'.ord + i).chr.to_sym, i] }.to_h
+
+benchmark:
+  dup_small: small_hash.dup
+  dup_larger: larger_hash.dup
+loop_count: 10000
diff --git a/benchmark/hash_flatten.rb b/benchmark/hash_flatten.rb
new file mode 100644
index 0000000000..e944aae9f2
--- /dev/null
+++ b/benchmark/hash_flatten.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10000.times do |i|
+  h[i] = nil
+end
+
+1000.times do
+  h.flatten
+end
diff --git a/benchmark/hash_ident_flo.rb b/benchmark/hash_ident_flo.rb
new file mode 100644
index 0000000000..0c7edfed3e
--- /dev/null
+++ b/benchmark/hash_ident_flo.rb
@@ -0,0 +1,4 @@
+h = {}.compare_by_identity
+strs = (1..10000).to_a.map!(&:to_f)
+strs.each { |s| h[s] = s }
+50.times { strs.each { |s| h[s] } }
diff --git a/benchmark/hash_ident_num.rb b/benchmark/hash_ident_num.rb
new file mode 100644
index 0000000000..b226736c6f
--- /dev/null
+++ b/benchmark/hash_ident_num.rb
@@ -0,0 +1,4 @@
+h = {}.compare_by_identity
+nums = (1..26).to_a
+nums.each { |n| h[n] = n }
+200_000.times { nums.each { |n| h[n] } }
diff --git a/benchmark/hash_ident_obj.rb b/benchmark/hash_ident_obj.rb
new file mode 100644
index 0000000000..4b3b58edec
--- /dev/null
+++ b/benchmark/hash_ident_obj.rb
@@ -0,0 +1,4 @@
+h = {}.compare_by_identity
+objs = 26.times.map { Object.new }
+objs.each { |o| h[o] = o }
+200_000.times { objs.each { |o| h[o] } }
diff --git a/benchmark/hash_ident_str.rb b/benchmark/hash_ident_str.rb
new file mode 100644
index 0000000000..8582b38e31
--- /dev/null
+++ b/benchmark/hash_ident_str.rb
@@ -0,0 +1,4 @@
+h = {}.compare_by_identity
+strs = ('a'..'z').to_a
+strs.each { |s| h[s] = s }
+200_000.times { strs.each { |s| h[s] } }
diff --git a/benchmark/hash_ident_sym.rb b/benchmark/hash_ident_sym.rb
new file mode 100644
index 0000000000..4c81e3d28e
--- /dev/null
+++ b/benchmark/hash_ident_sym.rb
@@ -0,0 +1,4 @@
+h = {}.compare_by_identity
+syms = ('a'..'z').to_a.map(&:to_sym)
+syms.each { |s| h[s] = s }
+200_000.times { syms.each { |s| h[s] } }
diff --git a/benchmark/hash_keys.rb b/benchmark/hash_keys.rb
new file mode 100644
index 0000000000..6863cd01f9
--- /dev/null
+++ b/benchmark/hash_keys.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10000.times do |i|
+  h[i] = nil
+end
+
+5000.times do
+  h.keys
+end
diff --git a/benchmark/hash_literal_small2.rb b/benchmark/hash_literal_small2.rb
new file mode 100644
index 0000000000..c188529260
--- /dev/null
+++ b/benchmark/hash_literal_small2.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+1_000_000.times.map { { "foo" => "bar", "bar" => "baz" }  }
diff --git a/benchmark/hash_literal_small4.rb b/benchmark/hash_literal_small4.rb
new file mode 100644
index 0000000000..739f71b5b0
--- /dev/null
+++ b/benchmark/hash_literal_small4.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+1_000_000.times.map { { "foo" => "bar", "bar" => "baz", "baz" => "lol", "lol" => "lgtm" } }
diff --git a/benchmark/hash_literal_small8.rb b/benchmark/hash_literal_small8.rb
new file mode 100644
index 0000000000..53d80af535
--- /dev/null
+++ b/benchmark/hash_literal_small8.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+1_000_000.times.map { { "foo" => "bar", "bar" => "baz", "baz" => "lol", "lol" => "lgtm", "lgtm" => "nope", "nope" => "ok", "ok" => "again", "again" => "wait" } }
diff --git a/benchmark/hash_long.rb b/benchmark/hash_long.rb
new file mode 100644
index 0000000000..03d9109602
--- /dev/null
+++ b/benchmark/hash_long.rb
@@ -0,0 +1,4 @@
+k1 = "Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong";
+k2 = "Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping Pong Ping";
+h = {k1 => 0, k2 => 0};
+3000000.times{|i| k = i % 2 ? k2 : k1; h [k] = h[k] + 1}
diff --git a/benchmark/hash_shift.rb b/benchmark/hash_shift.rb
new file mode 100644
index 0000000000..a645671a5b
--- /dev/null
+++ b/benchmark/hash_shift.rb
@@ -0,0 +1,10 @@
+h = {}
+
+10000.times do |i|
+  h[i] = nil
+end
+
+50000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/hash_shift_u16.rb b/benchmark/hash_shift_u16.rb
new file mode 100644
index 0000000000..ec800d0342
--- /dev/null
+++ b/benchmark/hash_shift_u16.rb
@@ -0,0 +1,10 @@
+h = {}
+
+(16384..65536).each do |i|
+  h[i] = nil
+end
+
+300000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/hash_shift_u24.rb b/benchmark/hash_shift_u24.rb
new file mode 100644
index 0000000000..de4e0fa696
--- /dev/null
+++ b/benchmark/hash_shift_u24.rb
@@ -0,0 +1,10 @@
+h = {}
+
+(0xff4000..0xffffff).each do |i|
+  h[i] = nil
+end
+
+300000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/hash_shift_u32.rb b/benchmark/hash_shift_u32.rb
new file mode 100644
index 0000000000..656aa55583
--- /dev/null
+++ b/benchmark/hash_shift_u32.rb
@@ -0,0 +1,10 @@
+h = {}
+
+(0xffff4000..0xffffffff).each do |i|
+  h[i] = nil
+end
+
+300000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/hash_small2.rb b/benchmark/hash_small2.rb
new file mode 100644
index 0000000000..45485d9c71
--- /dev/null
+++ b/benchmark/hash_small2.rb
@@ -0,0 +1 @@
+1000000.times.map{|i| a={}; 2.times{|j| a[j]=j}; a}
diff --git a/benchmark/hash_small4.rb b/benchmark/hash_small4.rb
new file mode 100644
index 0000000000..acd4084334
--- /dev/null
+++ b/benchmark/hash_small4.rb
@@ -0,0 +1 @@
+1000000.times.map{|i| a={}; 4.times{|j| a[j]=j}; a}
diff --git a/benchmark/hash_small8.rb b/benchmark/hash_small8.rb
new file mode 100644
index 0000000000..9cffcc91b6
--- /dev/null
+++ b/benchmark/hash_small8.rb
@@ -0,0 +1 @@
+1000000.times.map{|i| a={}; 8.times{|j| a[j]=j}; a}
diff --git a/benchmark/hash_to_proc.rb b/benchmark/hash_to_proc.rb
new file mode 100644
index 0000000000..2b675bf509
--- /dev/null
+++ b/benchmark/hash_to_proc.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10000.times do |i|
+  h[i] = nil
+end
+
+5000.times do |i|
+  [i].map(&h)
+end
diff --git a/benchmark/hash_values.rb b/benchmark/hash_values.rb
new file mode 100644
index 0000000000..069441302f
--- /dev/null
+++ b/benchmark/hash_values.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10000.times do |i|
+  h[i] = nil
+end
+
+5000.times do
+  h.values
+end
diff --git a/benchmark/int_quo.rb b/benchmark/int_quo.rb
new file mode 100644
index 0000000000..e22a3f8c30
--- /dev/null
+++ b/benchmark/int_quo.rb
@@ -0,0 +1 @@
+5000000.times { 42.quo(3) }
diff --git a/benchmark/io_copy_stream_write.rb b/benchmark/io_copy_stream_write.rb
new file mode 100644
index 0000000000..3fd87250a4
--- /dev/null
+++ b/benchmark/io_copy_stream_write.rb
@@ -0,0 +1,24 @@
+# The goal of this is to use a synthetic (non-IO) reader
+# to trigger the read/write loop of IO.copy_stream,
+# bypassing in-kernel mechanisms like sendfile for zero copy,
+# so we wrap the /dev/zero IO object:
+
+class Zero
+  def initialize
+    @n = 100000
+    @in = File.open('/dev/zero', 'rb')
+  end
+
+  def read(len, buf)
+    return if (@n -= 1) == 0
+    @in.read(len, buf)
+  end
+end
+
+begin
+  src = Zero.new
+  dst = File.open(IO::NULL, 'wb')
+  n = IO.copy_stream(src, dst)
+rescue Errno::ENOENT
+  # not *nix
+end if IO.respond_to?(:copy_stream) && IO.const_defined?(:NULL)
diff --git a/benchmark/io_copy_stream_write_socket.rb b/benchmark/io_copy_stream_write_socket.rb
new file mode 100644
index 0000000000..11f369bd0d
--- /dev/null
+++ b/benchmark/io_copy_stream_write_socket.rb
@@ -0,0 +1,35 @@
+# The goal of this is to use a synthetic (non-IO) reader
+# to trigger the read/write loop of IO.copy_stream,
+# bypassing in-kernel mechanisms like sendfile for zero copy,
+# so we wrap the /dev/zero IO object:
+class Zero
+  def initialize
+    @n = 100000
+    @in = File.open('/dev/zero', 'rb')
+  end
+
+  def read(len, buf)
+    return if (@n -= 1) == 0
+    @in.read(len, buf)
+  end
+end
+
+begin
+  require 'socket'
+  src = Zero.new
+  rd, wr = UNIXSocket.pair
+  pid = fork do
+    wr.close
+    buf = String.new
+    while rd.read(16384, buf)
+    end
+  end
+  rd.close
+  IO.copy_stream(src, wr)
+rescue Errno::ENOENT, NotImplementedError, NameError
+  # not *nix: missing /dev/zero, fork, or UNIXSocket
+rescue LoadError # no socket?
+ensure
+  wr.close if wr
+  Process.waitpid(pid) if pid
+end if IO.respond_to?(:copy_stream)
diff --git a/benchmark/io_file_create.rb b/benchmark/io_file_create.rb
new file mode 100644
index 0000000000..2f205c1333
--- /dev/null
+++ b/benchmark/io_file_create.rb
@@ -0,0 +1,13 @@
+#
+# Create files
+#
+
+max = 200_000
+file = './tmpfile_of_bm_io_file_create'
+
+max.times{
+  f = open(file, 'w')
+  f.close#(true)
+}
+File.unlink(file)
+
diff --git a/benchmark/io_file_read.rb b/benchmark/io_file_read.rb
new file mode 100644
index 0000000000..b9e796ed30
--- /dev/null
+++ b/benchmark/io_file_read.rb
@@ -0,0 +1,15 @@
+#
+# Seek and Read file.
+#
+
+require 'tempfile'
+
+max = 200_000
+str = "Hello world!  " * 1000
+f = Tempfile.new('yarv-benchmark')
+f.write str
+
+max.times{
+  f.seek 0
+  f.read
+}
diff --git a/benchmark/io_file_write.rb b/benchmark/io_file_write.rb
new file mode 100644
index 0000000000..aa1be0e5fe
--- /dev/null
+++ b/benchmark/io_file_write.rb
@@ -0,0 +1,14 @@
+#
+# Seek and Write file.
+#
+
+require 'tempfile'
+
+max = 200_000
+str = "Hello world!  " * 1000
+f = Tempfile.new('yarv-benchmark')
+
+max.times{
+  f.seek 0
+  f.write str
+}
diff --git a/benchmark/io_nonblock_noex.rb b/benchmark/io_nonblock_noex.rb
new file mode 100644
index 0000000000..da9357fdc6
--- /dev/null
+++ b/benchmark/io_nonblock_noex.rb
@@ -0,0 +1,22 @@
+nr = 1_000_000
+i = 0
+msg = '.'
+buf = '.'
+noex = { exception: false }
+begin
+  r, w = IO.pipe
+  while i < nr
+    i += 1
+    w.write_nonblock(msg, noex)
+    r.read_nonblock(1, buf, noex)
+  end
+rescue ArgumentError # old Rubies
+  while i < nr
+    i += 1
+    w.write_nonblock(msg)
+    r.read_nonblock(1, buf)
+  end
+ensure
+  r.close
+  w.close
+end
diff --git a/benchmark/io_nonblock_noex2.rb b/benchmark/io_nonblock_noex2.rb
new file mode 100644
index 0000000000..56819d049b
--- /dev/null
+++ b/benchmark/io_nonblock_noex2.rb
@@ -0,0 +1,21 @@
+nr = 1_000_000
+i = 0
+msg = '.'
+buf = '.'
+begin
+  r, w = IO.pipe
+  while i < nr
+    i += 1
+    w.write_nonblock(msg, exception: false)
+    r.read_nonblock(1, buf, exception: false)
+  end
+rescue ArgumentError # old Rubies
+  while i < nr
+    i += 1
+    w.write_nonblock(msg)
+    r.read_nonblock(1, buf)
+  end
+ensure
+  r.close
+  w.close
+end
diff --git a/benchmark/io_pipe_rw.rb b/benchmark/io_pipe_rw.rb
new file mode 100644
index 0000000000..6862a8ae61
--- /dev/null
+++ b/benchmark/io_pipe_rw.rb
@@ -0,0 +1,13 @@
+# Measure uncontended GVL performance via read/write with 1:1 threading
+# If we switch to M:N threading, this will benchmark something else...
+r, w = IO.pipe
+src = '0'.freeze
+dst = String.new
+i = 0
+while i < 1_000_000
+  i += 1
+  w.write(src)
+  r.read(1, dst)
+end
+w.close
+r.close
diff --git a/benchmark/io_select.rb b/benchmark/io_select.rb
new file mode 100644
index 0000000000..19248daeb1
--- /dev/null
+++ b/benchmark/io_select.rb
@@ -0,0 +1,9 @@
+# IO.select performance
+
+w = [ IO.pipe[1] ];
+
+nr = 1000000
+nr.times {
+  IO.select nil, w
+}
+
diff --git a/benchmark/io_select2.rb b/benchmark/io_select2.rb
new file mode 100644
index 0000000000..10e37d71b2
--- /dev/null
+++ b/benchmark/io_select2.rb
@@ -0,0 +1,22 @@
+# IO.select performance. worst case of single fd.
+
+ios = []
+nr = 1000000
+if defined?(Process::RLIMIT_NOFILE)
+  max = Process.getrlimit(Process::RLIMIT_NOFILE)[0]
+else
+  max = 64
+end
+puts "max fd: #{max} (results not apparent with <= 1024 max fd)"
+
+((max / 2) - 10).times do
+  ios.concat IO.pipe
+end
+
+last = [ ios[-1] ]
+puts "last IO: #{last[0].inspect}"
+
+nr.times do
+  IO.select nil, last
+end
+
diff --git a/benchmark/io_select3.rb b/benchmark/io_select3.rb
new file mode 100644
index 0000000000..7d0ba1f092
--- /dev/null
+++ b/benchmark/io_select3.rb
@@ -0,0 +1,21 @@
+# IO.select performance. a lot of fd
+
+ios = []
+nr = 100
+if defined?(Process::RLIMIT_NOFILE)
+  max = Process.getrlimit(Process::RLIMIT_NOFILE)[0]
+else
+  max = 64
+end
+puts "max fd: #{max} (results not apparent with <= 1024 max fd)"
+
+(max - 10).times do
+  r, w = IO.pipe
+  r.close
+  ios.push w
+end
+
+nr.times do
+  IO.select nil, ios
+end
+
diff --git a/benchmark/irb_color.yml b/benchmark/irb_color.yml
new file mode 100644
index 0000000000..ebdc8d7e8b
--- /dev/null
+++ b/benchmark/irb_color.yml
@@ -0,0 +1,13 @@
+prelude: |
+  require 'irb/color'
+  code = <<~'CODE'
+    def self.foo # bar
+      :"erb #{ERB.new("<%= self %>", trim_mode: ?-).result}"
+    end
+  CODE
+benchmark:
+  irb_color_complete: |
+    IRB::Color.colorize_code(code, complete: true)
+  irb_color_incomplete: |
+    IRB::Color.colorize_code(code, complete: false)
+loop_count: 2000000
diff --git a/benchmark/irb_exec.yml b/benchmark/irb_exec.yml
new file mode 100644
index 0000000000..28933f8b38
--- /dev/null
+++ b/benchmark/irb_exec.yml
@@ -0,0 +1,10 @@
+prelude: |
+  # frozen_string_literal: true
+  require 'rbconfig'
+  irb_f = [File.join(File.dirname(RbConfig.ruby), 'irb'), '-f']
+benchmark:
+  irb_exec: |
+    IO.popen(irb_f, 'w') do |io|
+      io.write('exit')
+    end
+loop_count: 30
diff --git a/benchmark/kernel_clone.yml b/benchmark/kernel_clone.yml
new file mode 100644
index 0000000000..069b23abcd
--- /dev/null
+++ b/benchmark/kernel_clone.yml
@@ -0,0 +1,6 @@
+prelude: "object = Object.new"
+benchmark:
+  clone: "object.clone"
+  clone_true: "object.clone(freeze: true)"
+  clone_false: "object.clone(freeze: false)"
+loop_count: 10000
diff --git a/benchmark/kernel_float.yml b/benchmark/kernel_float.yml
new file mode 100644
index 0000000000..215f6750fc
--- /dev/null
+++ b/benchmark/kernel_float.yml
@@ -0,0 +1,5 @@
+benchmark:
+  float: "Float(42)"
+  float_true: "Float(42, exception: true)"
+  float_false: "Float(42, exception: false)"
+loop_count: 10000
diff --git a/benchmark/kernel_tap.yml b/benchmark/kernel_tap.yml
new file mode 100644
index 0000000000..4dcbb31b4d
--- /dev/null
+++ b/benchmark/kernel_tap.yml
@@ -0,0 +1,6 @@
+prelude: |
+  obj = Object.new
+  x = nil
+benchmark:
+  kernel_tap: obj.tap { |o| x = o }
+loop_count: 20000000
diff --git a/benchmark/kernel_then.yml b/benchmark/kernel_then.yml
new file mode 100644
index 0000000000..85f7341e33
--- /dev/null
+++ b/benchmark/kernel_then.yml
@@ -0,0 +1,6 @@
+benchmark:
+  kernel_then: 1.then { |i| i + 1 }
+  kernel_then_enum: 1.then
+  kernel_yield_self: 1.yield_self { |i| i + 1 }
+  kernel_yield_self_enum: 1.yield_self
+loop_count: 20000000
diff --git a/benchmark/keyword_arguments.yml b/benchmark/keyword_arguments.yml
new file mode 100644
index 0000000000..fce6bce0b8
--- /dev/null
+++ b/benchmark/keyword_arguments.yml
@@ -0,0 +1,13 @@
+prelude: |
+  h = {a: 1}
+  def kw(a: 1) a end
+  def kws(**kw) kw end
+benchmark:
+  kw_to_kw: "kw(a: 1)"
+  kw_splat_to_kw: "kw(**h)"
+  kw_to_kw_splat: "kws(a: 1)"
+  kw_splat_to_kw_splat: "kws(**h)"
+  kw_and_splat_to_kw: "kw(a: 1, **h)"
+  kw_splats_to_kw: "kw(**h, **h)"
+  kw_and_splat_to_kw_splat: "kws(a: 1, **h)"
+  kw_splats_to_kw_splat: "kws(**h, **h)"
diff --git a/benchmark/lib/benchmark_driver/output/driver.rb b/benchmark/lib/benchmark_driver/output/driver.rb
new file mode 100644
index 0000000000..d22236e9fb
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/output/driver.rb
@@ -0,0 +1,36 @@
+require 'benchmark_driver/output/simple'
+
+# This replicates the legacy benchmark/driver.rb behavior.
+class BenchmarkDriver::Output::Driver < BenchmarkDriver::Output::Simple
+  def initialize(*)
+    super
+    @stdout = $stdout
+    @strio  = StringIO.new
+    $stdout = IOMultiplexer.new(@stdout, @strio)
+  end
+
+  def with_benchmark(*)
+    super
+  ensure
+    logfile = "bmlog-#{Time.now.strftime('%Y%m%d-%H%M%S')}.#{$$}.log"
+    puts "\nLog file: #{logfile}"
+
+    $stdout = @stdout
+    File.write(logfile, @strio.tap(&:rewind).read)
+  end
+
+  class IOMultiplexer
+    def initialize(io1, io2)
+      @io1 = io1
+      @io2 = io2
+    end
+
+    [:write, :sync, :sync=, :puts, :print, :flush].each do |method|
+      define_method(method) do |*args|
+        @io1.send(method, *args)
+        @io2.send(method, *args)
+      end
+    end
+  end
+  private_constant :IOMultiplexer
+end
diff --git a/benchmark/lib/benchmark_driver/runner/cstime.rb b/benchmark/lib/benchmark_driver/runner/cstime.rb
new file mode 100644
index 0000000000..3c3453e527
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/cstime.rb
@@ -0,0 +1,22 @@
+require 'benchmark_driver/runner/total'
+
+class BenchmarkDriver::Runner::Cstime < BenchmarkDriver::Runner::Total
+  METRIC = BenchmarkDriver::Metric.new(name: 'cstime', unit: 's', larger_better: false)
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC])
+
+  private
+
+  # Overriding BenchmarkDriver::Runner::Total#metric
+  def metric
+    METRIC
+  end
+
+  # Overriding BenchmarkDriver::Runner::Total#target
+  def target
+    :cstime
+  end
+end
diff --git a/benchmark/lib/benchmark_driver/runner/cutime.rb b/benchmark/lib/benchmark_driver/runner/cutime.rb
new file mode 100644
index 0000000000..e139962ef2
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/cutime.rb
@@ -0,0 +1,22 @@
+require 'benchmark_driver/runner/total'
+
+class BenchmarkDriver::Runner::Cutime < BenchmarkDriver::Runner::Total
+  METRIC = BenchmarkDriver::Metric.new(name: 'cutime', unit: 's', larger_better: false)
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC])
+
+  private
+
+  # Overriding BenchmarkDriver::Runner::Total#metric
+  def metric
+    METRIC
+  end
+
+  # Overriding BenchmarkDriver::Runner::Total#target
+  def target
+    :cutime
+  end
+end
diff --git a/benchmark/lib/benchmark_driver/runner/mjit.rb b/benchmark/lib/benchmark_driver/runner/mjit.rb
new file mode 100644
index 0000000000..1d4693e8be
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/mjit.rb
@@ -0,0 +1,34 @@
+require 'benchmark_driver/struct'
+require 'benchmark_driver/metric'
+require 'erb'
+
+# A runner to measure after-JIT performance easily
+class BenchmarkDriver::Runner::Mjit < BenchmarkDriver::Runner::Ips
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC]).extend(Module.new{
+    def parse(**)
+      jobs = super
+      jobs.map do |job|
+        job = job.dup
+        job.prelude = "#{job.prelude}\n#{<<~EOS}"
+          if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
+            __bmdv_ruby_i = 0
+            while __bmdv_ruby_i < 10000 # jit_min_calls
+              #{job.script}
+              __bmdv_ruby_i += 1
+            end
+            RubyVM::MJIT.pause # compile
+            #{job.script}
+            RubyVM::MJIT.resume; RubyVM::MJIT.pause # recompile
+            #{job.script}
+            RubyVM::MJIT.resume; RubyVM::MJIT.pause # recompile 2
+          end
+        EOS
+        job
+      end
+    end
+  })
+end
diff --git a/benchmark/lib/benchmark_driver/runner/mjit_exec.rb b/benchmark/lib/benchmark_driver/runner/mjit_exec.rb
new file mode 100644
index 0000000000..eac3dfba84
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/mjit_exec.rb
@@ -0,0 +1,237 @@
+require 'benchmark_driver/struct'
+require 'benchmark_driver/metric'
+require 'erb'
+
+# A special runner dedicated for measuring mjit_exec overhead.
+class BenchmarkDriver::Runner::MjitExec
+  METRIC = BenchmarkDriver::Metric.new(name: 'Iteration per second', unit: 'i/s')
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = ::BenchmarkDriver::Struct.new(
+    :name,        # @param [String] name - This is mandatory for all runner
+    :metrics,     # @param [Array<BenchmarkDriver::Metric>]
+    :num_methods, # @param [Integer] num_methods - The number of methods to be defined
+    :loop_count,  # @param [Integer] loop_count
+    :from_jit,    # @param [TrueClass,FalseClass] from_jit - Whether the mjit_exec() is from JIT or not
+    :to_jit,      # @param [TrueClass,FalseClass] to_jit - Whether the mjit_exec() is to JIT or not
+  )
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  class << JobParser = Module.new
+    # @param [Array,String] num_methods
+    # @param [Integer] loop_count
+    # @param [TrueClass,FalseClass] from_jit
+    # @param [TrueClass,FalseClass] to_jit
+    def parse(num_methods:, loop_count:, from_jit:, to_jit:)
+      if num_methods.is_a?(String)
+        num_methods = eval(num_methods)
+      end
+
+      num_methods.map do |num|
+        if num_methods.size > 1
+          suffix = "[#{'%4d' % num}]"
+        else
+          suffix = "_#{num}"
+        end
+        Job.new(
+          name: "mjit_exec_#{from_jit ? 'JT' : 'VM'}2#{to_jit ? 'JT' : 'VM'}#{suffix}",
+          metrics: [METRIC],
+          num_methods: num,
+          loop_count: loop_count,
+          from_jit: from_jit,
+          to_jit: to_jit,
+        )
+      end
+    end
+  end
+
+  # @param [BenchmarkDriver::Config::RunnerConfig] config
+  # @param [BenchmarkDriver::Output] output
+  # @param [BenchmarkDriver::Context] contexts
+  def initialize(config:, output:, contexts:)
+    @config = config
+    @output = output
+    @contexts = contexts
+  end
+
+  # This method is dynamically called by `BenchmarkDriver::JobRunner.run`
+  # @param [Array<BenchmarkDriver::Runner::Peak::Job>] jobs
+  def run(jobs)
+    @output.with_benchmark do
+      jobs.each do |job|
+        @output.with_job(name: job.name) do
+          @contexts.each do |context|
+            result = BenchmarkDriver::Repeater.with_repeat(config: @config, larger_better: true, rest_on_average: :average) do
+              run_benchmark(job, context: context)
+            end
+            value, duration = result.value
+            @output.with_context(name: context.name, executable: context.executable, gems: context.gems, prelude: context.prelude) do
+              @output.report(values: { METRIC => value }, duration: duration, loop_count: job.loop_count)
+            end
+          end
+        end
+      end
+    end
+  end
+
+  private
+
+  # @param [BenchmarkDriver::Runner::Ips::Job] job - loop_count is not nil
+  # @param [BenchmarkDriver::Context] context
+  # @return [BenchmarkDriver::Metrics]
+  def run_benchmark(job, context:)
+    if job.from_jit
+      if job.to_jit
+        benchmark = BenchmarkJT2JT.new(num_methods: job.num_methods, loop_count: job.loop_count)
+      else
+        raise NotImplementedError, "JT2VM is not implemented yet"
+      end
+    else
+      if job.to_jit
+        benchmark = BenchmarkVM2JT.new(num_methods: job.num_methods, loop_count: job.loop_count)
+      else
+        benchmark = BenchmarkVM2VM.new(num_methods: job.num_methods, loop_count: job.loop_count)
+      end
+    end
+
+    duration = Tempfile.open(['benchmark_driver-result', '.txt']) do |f|
+      with_script(benchmark.render(result: f.path)) do |path|
+        opt = []
+        if context.executable.command.any? { |c| c.start_with?('--jit') }
+          opt << '--jit-min-calls=2'
+        end
+        IO.popen([*context.executable.command, '--disable-gems', *opt, path], &:read)
+        if $?.success?
+          Float(f.read)
+        else
+          BenchmarkDriver::Result::ERROR
+        end
+      end
+    end
+
+    [job.loop_count.to_f / duration, duration]
+  end
+
+  def with_script(script)
+    if @config.verbose >= 2
+      sep = '-' * 30
+      $stdout.puts "\n\n#{sep}[Script begin]#{sep}\n#{script}#{sep}[Script end]#{sep}\n\n"
+    end
+
+    Tempfile.open(['benchmark_driver-', '.rb']) do |f|
+      f.puts script
+      f.close
+      return yield(f.path)
+    end
+  end
+
+  # @param [Integer] num_methods
+  # @param [Integer] loop_count
+  BenchmarkVM2VM = ::BenchmarkDriver::Struct.new(:num_methods, :loop_count) do
+    # @param [String] result - A file to write result
+    def render(result:)
+      ERB.new(<<~EOS, trim_mode: '%').result(binding)
+        % num_methods.times do |i|
+        def a<%= i %>
+          nil
+        end
+        % end
+        RubyVM::MJIT.pause if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
+
+        def vm
+          t = Process.clock_gettime(Process::CLOCK_MONOTONIC)
+          i = 0
+          while i < <%= loop_count / 1000 %>
+        % 1000.times do |i|
+            a<%= i % num_methods %>
+        % end
+            i += 1
+          end
+        % (loop_count % 1000).times do |i|
+          a<%= i % num_methods %>
+        % end
+          Process.clock_gettime(Process::CLOCK_MONOTONIC) - t
+        end
+
+        vm # warmup call cache
+        File.write(<%= result.dump %>, vm)
+      EOS
+    end
+  end
+  private_constant :BenchmarkVM2VM
+
+  # @param [Integer] num_methods
+  # @param [Integer] loop_count
+  BenchmarkVM2JT = ::BenchmarkDriver::Struct.new(:num_methods, :loop_count) do
+    # @param [String] result - A file to write result
+    def render(result:)
+      ERB.new(<<~EOS, trim_mode: '%').result(binding)
+        % num_methods.times do |i|
+        def a<%= i %>
+          nil
+        end
+        a<%= i %>
+        a<%= i %> # --jit-min-calls=2
+        % end
+        RubyVM::MJIT.pause if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
+
+        def vm
+          t = Process.clock_gettime(Process::CLOCK_MONOTONIC)
+          i = 0
+          while i < <%= loop_count / 1000 %>
+        % 1000.times do |i|
+            a<%= i % num_methods %>
+        % end
+            i += 1
+          end
+        % (loop_count % 1000).times do |i|
+          a<%= i % num_methods %>
+        % end
+          Process.clock_gettime(Process::CLOCK_MONOTONIC) - t
+        end
+
+        vm # warmup call cache
+        File.write(<%= result.dump %>, vm)
+      EOS
+    end
+  end
+  private_constant :BenchmarkVM2JT
+
+  # @param [Integer] num_methods
+  # @param [Integer] loop_count
+  BenchmarkJT2JT = ::BenchmarkDriver::Struct.new(:num_methods, :loop_count) do
+    # @param [String] result - A file to write result
+    def render(result:)
+      ERB.new(<<~EOS, trim_mode: '%').result(binding)
+        % num_methods.times do |i|
+        def a<%= i %>
+          nil
+        end
+        % end
+
+        # You may need to:
+        #   * Increase `JIT_ISEQ_SIZE_THRESHOLD` to 10000000 in mjit.h
+        #   * Always return false in `inlinable_iseq_p()` of mjit_compile.c
+        def jit
+          t = Process.clock_gettime(Process::CLOCK_MONOTONIC)
+          i = 0
+          while i < <%= loop_count / 1000 %>
+        % 1000.times do |i|
+            a<%= i % num_methods %>
+        % end
+            i += 1
+          end
+        % (loop_count % 1000).times do |i|
+          a<%= i % num_methods %>
+        % end
+          Process.clock_gettime(Process::CLOCK_MONOTONIC) - t
+        end
+
+        jit
+        jit
+        RubyVM::MJIT.pause if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
+        File.write(<%= result.dump %>, jit)
+      EOS
+    end
+  end
+  private_constant :BenchmarkJT2JT
+end
diff --git a/benchmark/lib/benchmark_driver/runner/peak.rb b/benchmark/lib/benchmark_driver/runner/peak.rb
new file mode 100644
index 0000000000..d04f2e51ff
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/peak.rb
@@ -0,0 +1,151 @@
+require 'benchmark_driver/struct'
+require 'benchmark_driver/metric'
+require 'benchmark_driver/default_job'
+require 'benchmark_driver/default_job_parser'
+require 'tempfile'
+
+class BenchmarkDriver::Runner::Peak
+  METRIC = BenchmarkDriver::Metric.new(
+    name: 'Peak memory usage', unit: 'bytes', larger_better: false, worse_word: 'larger',
+  )
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC])
+
+  # @param [BenchmarkDriver::Config::RunnerConfig] config
+  # @param [BenchmarkDriver::Output] output
+  # @param [BenchmarkDriver::Context] contexts
+  def initialize(config:, output:, contexts:)
+    @config = config
+    @output = output
+    @contexts = contexts
+  end
+
+  # This method is dynamically called by `BenchmarkDriver::JobRunner.run`
+  # @param [Array<BenchmarkDriver::Runner::Peak::Job>] jobs
+  def run(jobs)
+    if jobs.any? { |job| job.loop_count.nil? }
+      jobs = jobs.map do |job|
+        job.loop_count ? job : Job.new(job.to_h.merge(loop_count: 1))
+      end
+    end
+
+    @output.with_benchmark do
+      jobs.each do |job|
+        @output.with_job(name: job.name) do
+          job.runnable_contexts(@contexts).each do |context|
+            value = BenchmarkDriver::Repeater.with_repeat(config: @config, larger_better: false) do
+              run_benchmark(job, context: context)
+            end
+            @output.with_context(name: context.name, executable: context.executable, gems: context.gems, prelude: context.prelude) do
+              @output.report(values: { metric => value }, loop_count: job.loop_count)
+            end
+          end
+        end
+      end
+    end
+  end
+
+  private
+
+  # @param [BenchmarkDriver::Runner::Ips::Job] job - loop_count is not nil
+  # @param [BenchmarkDriver::Context] context
+  # @return [BenchmarkDriver::Metrics]
+  def run_benchmark(job, context:)
+    benchmark = BenchmarkScript.new(
+      preludes:   [context.prelude, job.prelude],
+      script:     job.script,
+      teardown:   job.teardown,
+      loop_count: job.loop_count,
+    )
+
+    memory_status = File.expand_path('../../../../tool/lib/memory_status', __dir__)
+    Tempfile.open(['benchmark_driver-', '.rb']) do |f|
+      with_script(benchmark.render) do |path|
+        output = IO.popen([*context.executable.command, path, f.path, target, memory_status], &:read)
+        if $?.success?
+          Integer(f.read)
+        else
+          $stdout.print(output)
+          BenchmarkDriver::Result::ERROR
+        end
+      end
+    end
+  end
+
+  # Overridden by BenchmarkDriver::Runner::Size
+  def target
+    'peak'
+  end
+
+  # Overridden by BenchmarkDriver::Runner::Size
+  def metric
+    METRIC
+  end
+
+  def with_script(script)
+    if @config.verbose >= 2
+      sep = '-' * 30
+      $stdout.puts "\n\n#{sep}[Script begin]#{sep}\n#{script}#{sep}[Script end]#{sep}\n\n"
+    end
+
+    Tempfile.open(['benchmark_driver-', '.rb']) do |f|
+      f.puts script
+      f.close
+      return yield(f.path)
+    end
+  end
+
+  # @param [String] prelude
+  # @param [String] script
+  # @param [String] teardown
+  # @param [Integer] loop_count
+  BenchmarkScript = ::BenchmarkDriver::Struct.new(:preludes, :script, :teardown, :loop_count) do
+    def render
+      prelude = preludes.reject(&:nil?).reject(&:empty?).join("\n")
+      <<-RUBY
+#{prelude}
+#{while_loop(script, loop_count)}
+#{teardown}
+
+result_file, target, memory_status = ARGV
+require_relative memory_status
+
+ms = Memory::Status.new
+case target.to_sym
+when :peak
+  key = ms.respond_to?(:hwm) ? :hwm : :peak
+when :size
+  key = ms.respond_to?(:rss) ? :rss : :size
+else
+  raise('unexpected target: ' + target)
+end
+
+File.write(result_file, ms[key])
+      RUBY
+    end
+
+    private
+
+    def while_loop(content, times)
+      if !times.is_a?(Integer) || times <= 0
+        raise ArgumentError.new("Unexpected times: #{times.inspect}")
+      end
+
+      if times > 1
+        <<-RUBY
+__bmdv_i = 0
+while __bmdv_i < #{times}
+  #{content}
+  __bmdv_i += 1
+end
+        RUBY
+      else
+        content
+      end
+    end
+  end
+  private_constant :BenchmarkScript
+end
diff --git a/benchmark/lib/benchmark_driver/runner/size.rb b/benchmark/lib/benchmark_driver/runner/size.rb
new file mode 100644
index 0000000000..1b31f901c7
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/size.rb
@@ -0,0 +1,25 @@
+require 'benchmark_driver/runner/peak'
+
+# Actually the same as BenchmarkDriver::Runner::Memory
+class BenchmarkDriver::Runner::Size < BenchmarkDriver::Runner::Peak
+  METRIC = BenchmarkDriver::Metric.new(
+    name: 'Max resident set size', unit: 'bytes', larger_better: false, worse_word: 'larger',
+  )
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC])
+
+  private
+
+  # Overriding BenchmarkDriver::Runner::Peak#metric
+  def metric
+    METRIC
+  end
+
+  # Overriding BenchmarkDriver::Runner::Peak#target
+  def target
+    'size'
+  end
+end
diff --git a/benchmark/lib/benchmark_driver/runner/stime.rb b/benchmark/lib/benchmark_driver/runner/stime.rb
new file mode 100644
index 0000000000..4577fb0bf8
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/stime.rb
@@ -0,0 +1,22 @@
+require 'benchmark_driver/runner/total'
+
+class BenchmarkDriver::Runner::Stime < BenchmarkDriver::Runner::Total
+  METRIC = BenchmarkDriver::Metric.new(name: 'stime', unit: 's', larger_better: false)
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC])
+
+  private
+
+  # Overriding BenchmarkDriver::Runner::Total#metric
+  def metric
+    METRIC
+  end
+
+  # Overriding BenchmarkDriver::Runner::Total#target
+  def target
+    :stime
+  end
+end
diff --git a/benchmark/lib/benchmark_driver/runner/total.rb b/benchmark/lib/benchmark_driver/runner/total.rb
new file mode 100644
index 0000000000..64dc14f84e
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/total.rb
@@ -0,0 +1,137 @@
+require 'benchmark_driver/struct'
+require 'benchmark_driver/metric'
+require 'benchmark_driver/default_job'
+require 'benchmark_driver/default_job_parser'
+require 'tempfile'
+
+class BenchmarkDriver::Runner::Total
+  METRIC = BenchmarkDriver::Metric.new(name: 'Total time', unit: 's', larger_better: false)
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC])
+
+  # @param [BenchmarkDriver::Config::RunnerConfig] config
+  # @param [BenchmarkDriver::Output] output
+  # @param [BenchmarkDriver::Context] contexts
+  def initialize(config:, output:, contexts:)
+    @config = config
+    @output = output
+    @contexts = contexts
+  end
+
+  # This method is dynamically called by `BenchmarkDriver::JobRunner.run`
+  # @param [Array<BenchmarkDriver::Runner::Total::Job>] jobs
+  def run(jobs)
+    if jobs.any? { |job| job.loop_count.nil? }
+      raise 'missing loop_count is not supported in Ruby repository'
+    end
+
+    @output.with_benchmark do
+      jobs.each do |job|
+        @output.with_job(name: job.name) do
+          job.runnable_contexts(@contexts).each do |context|
+            duration = BenchmarkDriver::Repeater.with_repeat(config: @config, larger_better: false) do
+              run_benchmark(job, context: context)
+            end
+            @output.with_context(name: context.name, executable: context.executable, gems: context.gems, prelude: context.prelude) do
+              @output.report(values: { metric => duration }, duration: duration, loop_count: job.loop_count)
+            end
+          end
+        end
+      end
+    end
+  end
+
+  private
+
+  # @param [BenchmarkDriver::Runner::Ips::Job] job - loop_count is not nil
+  # @param [BenchmarkDriver::Context] context
+  # @return [BenchmarkDriver::Metrics]
+  def run_benchmark(job, context:)
+    benchmark = BenchmarkScript.new(
+      preludes:   [context.prelude, job.prelude],
+      script:     job.script,
+      teardown:   job.teardown,
+      loop_count: job.loop_count,
+    )
+
+    Tempfile.open(['benchmark_driver-', '.rb']) do |f|
+      with_script(benchmark.render(result: f.path, target: target)) do |path|
+        IO.popen([*context.executable.command, path], &:read) # TODO: print stdout if verbose=2
+        if $?.success?
+          Float(f.read)
+        else
+          BenchmarkDriver::Result::ERROR
+        end
+      end
+    end
+  end
+
+  # This method is overridden by some subclasses
+  def metric
+    METRIC
+  end
+
+  # This method is overridden by some subclasses
+  def target
+    :total
+  end
+
+  def with_script(script)
+    if @config.verbose >= 2
+      sep = '-' * 30
+      $stdout.puts "\n\n#{sep}[Script begin]#{sep}\n#{script}#{sep}[Script end]#{sep}\n\n"
+    end
+
+    Tempfile.open(['benchmark_driver-', '.rb']) do |f|
+      f.puts script
+      f.close
+      return yield(f.path)
+    end
+  end
+
+  # @param [String] prelude
+  # @param [String] script
+  # @param [String] teardown
+  # @param [Integer] loop_count
+  BenchmarkScript = ::BenchmarkDriver::Struct.new(:preludes, :script, :teardown, :loop_count) do
+    # @param [String] result - A file to write result
+    def render(result:, target:)
+      prelude = preludes.reject(&:nil?).reject(&:empty?).join("\n")
+      <<-RUBY
+#{prelude}
+
+require 'benchmark'
+__bmdv_result = Benchmark.measure {
+  #{while_loop(script, loop_count)}
+}
+
+#{teardown}
+
+File.write(#{result.dump}, __bmdv_result.#{target})
+      RUBY
+    end
+
+    private
+
+    def while_loop(content, times)
+      if !times.is_a?(Integer) || times <= 0
+        raise ArgumentError.new("Unexpected times: #{times.inspect}")
+      elsif times == 1
+        return content
+      end
+
+      # TODO: execute in batch
+      <<-RUBY
+__bmdv_i = 0
+while __bmdv_i < #{times}
+  #{content}
+  __bmdv_i += 1
+end
+      RUBY
+    end
+  end
+  private_constant :BenchmarkScript
+end
diff --git a/benchmark/lib/benchmark_driver/runner/utime.rb b/benchmark/lib/benchmark_driver/runner/utime.rb
new file mode 100644
index 0000000000..b61d83a188
--- /dev/null
+++ b/benchmark/lib/benchmark_driver/runner/utime.rb
@@ -0,0 +1,22 @@
+require 'benchmark_driver/runner/total'
+
+class BenchmarkDriver::Runner::Utime < BenchmarkDriver::Runner::Total
+  METRIC = BenchmarkDriver::Metric.new(name: 'utime', unit: 's', larger_better: false)
+
+  # JobParser returns this, `BenchmarkDriver::Runner.runner_for` searches "*::Job"
+  Job = Class.new(BenchmarkDriver::DefaultJob)
+  # Dynamically fetched and used by `BenchmarkDriver::JobParser.parse`
+  JobParser = BenchmarkDriver::DefaultJobParser.for(klass: Job, metrics: [METRIC])
+
+  private
+
+  # Overriding BenchmarkDriver::Runner::Total#metric
+  def metric
+    METRIC
+  end
+
+  # Overriding BenchmarkDriver::Runner::Total#target
+  def target
+    :utime
+  end
+end
diff --git a/benchmark/lib/load.rb b/benchmark/lib/load.rb
new file mode 100644
index 0000000000..31b770c484
--- /dev/null
+++ b/benchmark/lib/load.rb
@@ -0,0 +1,18 @@
+# How to use this file:
+#   1. write a `$(srcdir)/test.rb` like:
+=begin
+require_relative 'benchmark/lib/load'
+
+Benchmark.driver(repeat_count: 5){|x|
+  x.executable name: 'clean-miniruby', command: %w'../clean-trunk/miniruby'
+  x.executable name: 'modif-miniruby', command: %w'./miniruby'
+
+  x.report %q{
+    h = {a: 1, b: 2, c: 3, d: 4}
+  }
+}
+=end
+#
+#  2. `make run`
+$:.unshift(File.join(__dir__, '../benchmark-driver/lib'))
+require 'benchmark_driver'
diff --git a/benchmark/bm_loop_for.rb b/benchmark/loop_for.rb
index 0fc4cc1511..0fc4cc1511 100644
--- a/benchmark/bm_loop_for.rb
+++ b/benchmark/loop_for.rb
diff --git a/benchmark/bm_loop_generator.rb b/benchmark/loop_generator.rb
index d3375c744c..d3375c744c 100644
--- a/benchmark/bm_loop_generator.rb
+++ b/benchmark/loop_generator.rb
diff --git a/benchmark/bm_loop_times.rb b/benchmark/loop_times.rb
index 521f72ad1a..521f72ad1a 100644
--- a/benchmark/bm_loop_times.rb
+++ b/benchmark/loop_times.rb
diff --git a/benchmark/loop_whileloop.rb b/benchmark/loop_whileloop.rb
new file mode 100644
index 0000000000..0072822c06
--- /dev/null
+++ b/benchmark/loop_whileloop.rb
@@ -0,0 +1,4 @@
+i = 0
+while i<30_000_000 # benchmark loop 1
+  i += 1
+end
diff --git a/benchmark/loop_whileloop2.rb b/benchmark/loop_whileloop2.rb
new file mode 100644
index 0000000000..47d02dffc4
--- /dev/null
+++ b/benchmark/loop_whileloop2.rb
@@ -0,0 +1,4 @@
+i = 0
+while i< 6_000_000 # benchmark loop 2
+  i += 1
+end
diff --git a/benchmark/make_fasta_output.rb b/benchmark/make_fasta_output.rb
deleted file mode 100644
index b6d787ae27..0000000000
--- a/benchmark/make_fasta_output.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-# prepare 'fasta.output'
-
-def prepare_fasta_output n
-  filebase = File.join(File.dirname($0), 'fasta.output')
-  script = File.join(File.dirname($0), 'bm_so_fasta.rb')
-  file = "#{filebase}.#{n}"
-
-  unless FileTest.exist?(file)
-    STDERR.puts "preparing #{file}"
-
-    open(file, 'w'){|f|
-      ARGV[0] = n
-      $stdout = f
-      load script
-      $stdout = STDOUT
-    }
-  end
-end
-
diff --git a/benchmark/marshal_dump_flo.rb b/benchmark/marshal_dump_flo.rb
new file mode 100644
index 0000000000..9b8d0c6afb
--- /dev/null
+++ b/benchmark/marshal_dump_flo.rb
@@ -0,0 +1,2 @@
+bug10761 = 10000.times.map { |x| x.to_f }
+100.times { Marshal.dump(bug10761) }
diff --git a/benchmark/marshal_dump_load_geniv.rb b/benchmark/marshal_dump_load_geniv.rb
new file mode 100644
index 0000000000..8252ad90fa
--- /dev/null
+++ b/benchmark/marshal_dump_load_geniv.rb
@@ -0,0 +1,10 @@
+a = ''
+a.instance_eval do
+  @a = :a
+  @b = :b
+  @c = :c
+end
+100000.times do
+  a = Marshal.load(Marshal.dump(a))
+end
+#p(a.instance_eval { @a == :a && @b == :b && @c == :c })
diff --git a/benchmark/marshal_dump_load_time.rb b/benchmark/marshal_dump_load_time.rb
new file mode 100644
index 0000000000..e29743b791
--- /dev/null
+++ b/benchmark/marshal_dump_load_time.rb
@@ -0,0 +1 @@
+100000.times { Marshal.load(Marshal.dump(Time.now)) }
diff --git a/benchmark/match_gt4.rb b/benchmark/match_gt4.rb
new file mode 100644
index 0000000000..ffda109912
--- /dev/null
+++ b/benchmark/match_gt4.rb
@@ -0,0 +1 @@
+1000000.times { /(.)(.)(\d+)(\d)/.match("THX1138.") }
diff --git a/benchmark/match_small.rb b/benchmark/match_small.rb
new file mode 100644
index 0000000000..3b743d484a
--- /dev/null
+++ b/benchmark/match_small.rb
@@ -0,0 +1 @@
+1000000.times { 'haystack'.match(/hay/) }
diff --git a/benchmark/mjit_exec_jt2jt.yml b/benchmark/mjit_exec_jt2jt.yml
new file mode 100644
index 0000000000..6c303c7a44
--- /dev/null
+++ b/benchmark/mjit_exec_jt2jt.yml
@@ -0,0 +1,6 @@
+type: lib/benchmark_driver/runner/mjit_exec
+num_methods: [1]
+#num_methods: (1..100).to_a + [200, 300, 400, 500, 600, 700, 800, 900, 1000]
+loop_count: 50000000
+from_jit: true
+to_jit: true
diff --git a/benchmark/mjit_exec_vm2jt.yml b/benchmark/mjit_exec_vm2jt.yml
new file mode 100644
index 0000000000..764883f070
--- /dev/null
+++ b/benchmark/mjit_exec_vm2jt.yml
@@ -0,0 +1,6 @@
+type: lib/benchmark_driver/runner/mjit_exec
+num_methods: [1]
+#num_methods: (1..100).to_a + [200, 300, 400, 500, 600, 700, 800, 900, 1000]
+loop_count: 50000000
+from_jit: false
+to_jit: true
diff --git a/benchmark/mjit_exec_vm2vm.yml b/benchmark/mjit_exec_vm2vm.yml
new file mode 100644
index 0000000000..030aa76c1c
--- /dev/null
+++ b/benchmark/mjit_exec_vm2vm.yml
@@ -0,0 +1,6 @@
+type: lib/benchmark_driver/runner/mjit_exec
+num_methods: [1]
+#num_methods: (1..100).to_a + [200, 300, 400, 500, 600, 700, 800, 900, 1000]
+loop_count: 50000000
+from_jit: false
+to_jit: false
diff --git a/benchmark/mjit_exivar.yml b/benchmark/mjit_exivar.yml
new file mode 100644
index 0000000000..2584fa6410
--- /dev/null
+++ b/benchmark/mjit_exivar.yml
@@ -0,0 +1,18 @@
+type: lib/benchmark_driver/runner/mjit
+prelude: |
+  class Bench < Hash
+    def initialize
+      @exivar = nil
+    end
+
+    def exivar
+      @exivar
+    end
+  end
+
+  bench = Bench.new
+
+benchmark:
+  mjit_exivar: bench.exivar
+
+loop_count: 200000000
diff --git a/benchmark/mjit_integer.yml b/benchmark/mjit_integer.yml
new file mode 100644
index 0000000000..edc3556479
--- /dev/null
+++ b/benchmark/mjit_integer.yml
@@ -0,0 +1,30 @@
+type: lib/benchmark_driver/runner/mjit
+prelude: |
+  def mjit_abs(int)        int.abs        end
+  def mjit_bit_length(int) int.bit_length end
+  def mjit_comp(int)       ~int           end
+  def mjit_even?(int)      int.even?      end
+  def mjit_integer?(int)   int.integer?   end
+  def mjit_magnitude(int)  int.magnitude  end
+  def mjit_odd?(int)       int.odd?       end
+  def mjit_ord(int)        int.ord        end
+  def mjit_to_i(int)       int.to_i       end
+  def mjit_to_int(int)     int.to_int     end
+  def mjit_uminus(int)     -int           end
+  def mjit_zero?(int)      int.zero?      end
+
+benchmark:
+  - mjit_abs(-1)
+  - mjit_bit_length(100)
+  - mjit_comp(1)
+  - mjit_even?(2)
+  - mjit_integer?(0)
+  - mjit_magnitude(-1)
+  - mjit_odd?(1)
+  - mjit_ord(1)
+  - mjit_to_i(1)
+  - mjit_to_int(1)
+  - mjit_uminus(1)
+  - mjit_zero?(0)
+
+loop_count: 40000000
diff --git a/benchmark/mjit_kernel.yml b/benchmark/mjit_kernel.yml
new file mode 100644
index 0000000000..7720e65c2c
--- /dev/null
+++ b/benchmark/mjit_kernel.yml
@@ -0,0 +1,20 @@
+type: lib/benchmark_driver/runner/mjit
+prelude: |
+  def mjit_class(obj)
+    obj.class
+  end
+
+  def mjit_frozen?(obj)
+    obj.frozen?
+  end
+
+  str = ""
+  fstr = "".freeze
+
+benchmark:
+  - mjit_class(self)
+  - mjit_class(1)
+  - mjit_frozen?(str)
+  - mjit_frozen?(fstr)
+
+loop_count: 40000000
diff --git a/benchmark/mjit_leave.yml b/benchmark/mjit_leave.yml
new file mode 100644
index 0000000000..9ac68b164b
--- /dev/null
+++ b/benchmark/mjit_leave.yml
@@ -0,0 +1,8 @@
+type: lib/benchmark_driver/runner/mjit
+prelude: |
+  def leave
+    nil
+  end
+benchmark:
+  mjit_leave: leave
+loop_count: 200000000
diff --git a/benchmark/mjit_opt_cc_insns.yml b/benchmark/mjit_opt_cc_insns.yml
new file mode 100644
index 0000000000..fed6d34bd5
--- /dev/null
+++ b/benchmark/mjit_opt_cc_insns.yml
@@ -0,0 +1,27 @@
+# opt_* insns using vm_method_cfunc_is with send-compatible operands:
+#   * opt_nil_p
+#   * opt_not
+#   * opt_eq
+type: lib/benchmark_driver/runner/mjit
+prelude: |
+  def mjit_nil?(obj)
+    obj.nil?
+  end
+
+  def mjit_not(obj)
+    !obj
+  end
+
+  def mjit_eq(a, b)
+    a == b
+  end
+
+benchmark:
+  - script: mjit_nil?(1)
+    loop_count: 40000000
+  - script: mjit_not(1)
+    loop_count: 40000000
+  - script: mjit_eq(1, nil)
+    loop_count: 8000000
+  - script: mjit_eq(nil, 1)
+    loop_count: 8000000
diff --git a/benchmark/mjit_struct_aref.yml b/benchmark/mjit_struct_aref.yml
new file mode 100644
index 0000000000..bfba1323f2
--- /dev/null
+++ b/benchmark/mjit_struct_aref.yml
@@ -0,0 +1,10 @@
+type: lib/benchmark_driver/runner/mjit
+prelude: |
+  def mjit_struct_aref(struct)
+    struct.aa
+  end
+  struct = Struct.new(:a0, :a1, :a2, :a3, :a4, :a5, :a6, :a7, :a8, :a9, :aa).new
+
+benchmark: mjit_struct_aref(struct)
+
+loop_count: 40000000
diff --git a/benchmark/nil_p.yml b/benchmark/nil_p.yml
new file mode 100644
index 0000000000..79ba4f2177
--- /dev/null
+++ b/benchmark/nil_p.yml
@@ -0,0 +1,9 @@
+prelude: |
+  class Niller; def nil?; true; end; end
+  xnil, notnil = nil, Object.new
+  niller = Niller.new
+benchmark:
+  - xnil.nil?
+  - notnil.nil?
+  - niller.nil?
+loop_count: 10000000
diff --git a/benchmark/num_zero_p.yml b/benchmark/num_zero_p.yml
new file mode 100644
index 0000000000..2195963433
--- /dev/null
+++ b/benchmark/num_zero_p.yml
@@ -0,0 +1,8 @@
+benchmark:
+  - 0.zero?
+  - 1.zero?
+  - 0r.zero?
+  - 1r.zero?
+  - 0i.zero?
+  - 1i.zero?
+loop_count: 50000000
diff --git a/benchmark/object_allocate.yml b/benchmark/object_allocate.yml
new file mode 100644
index 0000000000..93ff463e41
--- /dev/null
+++ b/benchmark/object_allocate.yml
@@ -0,0 +1,21 @@
+prelude: |
+  class Eight
+    8.times { include(Module.new) }
+  end
+  class ThirtyTwo
+    32.times { include(Module.new) }
+  end
+  class SixtyFour
+    64.times { include(Module.new) }
+  end
+  class OneTwentyEight
+    128.times { include(Module.new) }
+  end
+  # Disable GC to see raw throughput:
+  GC.disable
+benchmark:
+  allocate_8_deep: Eight.new
+  allocate_32_deep: ThirtyTwo.new
+  allocate_64_deep: SixtyFour.new
+  allocate_128_deep: OneTwentyEight.new
+loop_count: 100000
diff --git a/benchmark/objspace_dump_all.yml b/benchmark/objspace_dump_all.yml
new file mode 100644
index 0000000000..ebab562d2e
--- /dev/null
+++ b/benchmark/objspace_dump_all.yml
@@ -0,0 +1,13 @@
+prelude: |
+  require 'objspace'
+  require 'tempfile'
+  $objs = 1_000.times.map { Object.new }
+  $strings = 1_000.times.map { |i| "string #{i}" }
+  $file = Tempfile.new('heap')
+  $dev_null = File.open(File::NULL, 'w+')
+
+benchmark:
+  dump_all_string: "ObjectSpace.dump_all(output: :string)"
+  dump_all_file: "ObjectSpace.dump_all(output: $file)"
+  dump_all_dev_null: "ObjectSpace.dump_all(output: $dev_null)"
+loop_count: 1
diff --git a/benchmark/other-lang/eval.rb b/benchmark/other-lang/eval.rb
index 3875927389..48a2cea019 100644
--- a/benchmark/other-lang/eval.rb
+++ b/benchmark/other-lang/eval.rb
@@ -51,14 +51,14 @@ Bench.each{|b|
 
 require 'pp'
 # utime
-puts Lang.join("\t")  
+puts Lang.join("\t")
 Bench.each_with_index{|b, bi|
   print b, "\t"
   puts Result[bi].map{|e| e[0]}.join("\t")
 }
 
 # rtime
-puts Lang.join("\t")  
+puts Lang.join("\t")
 Bench.each_with_index{|b, bi|
   print b, "\t"
   puts Result[bi].map{|e| e[1]}.join("\t")
diff --git a/benchmark/other-lang/fact.py b/benchmark/other-lang/fact.py
index 01593965d9..1ce9f76275 100644
--- a/benchmark/other-lang/fact.py
+++ b/benchmark/other-lang/fact.py
@@ -3,7 +3,7 @@
 
 def factL(n):
 	r = 1
-	for x in range(2, n):
+	for x in range(2, n+1):
 		r *= x
 	return r
 
diff --git a/benchmark/other-lang/fact.rb b/benchmark/other-lang/fact.rb
index 7e97b22b39..6cedc752cd 100644
--- a/benchmark/other-lang/fact.rb
+++ b/benchmark/other-lang/fact.rb
@@ -6,8 +6,8 @@ def fact(n)
   end
 end
 
-i=0
+i = 0
 while i<10000
-  i+=1
+  i += 1
   fact(100)
 end
diff --git a/benchmark/other-lang/loop.rb b/benchmark/other-lang/loop.rb
index d43cef61f3..b367b9dbf3 100644
--- a/benchmark/other-lang/loop.rb
+++ b/benchmark/other-lang/loop.rb
@@ -1,4 +1,4 @@
-i=0
+i = 0
 while i<30000000
-  i+=1
+  i += 1
 end
diff --git a/benchmark/pm_array.yml b/benchmark/pm_array.yml
new file mode 100644
index 0000000000..babb65a289
--- /dev/null
+++ b/benchmark/pm_array.yml
@@ -0,0 +1,19 @@
+prelude: |
+  def call(*val)
+    case val
+      in [String => body]
+        [200, {}, [body]]
+      in [Integer => status]
+        [status, {}, [""]]
+      in [Integer, String] => response
+        [response[0], {}, [response[1]]]
+      in [Integer, Hash, String] => response
+        [response[0], response[1], [response[2]]]
+    end
+  end
+
+benchmark:
+  first_match: call("ok")
+  second_match: call(401)
+  third_match: call(200, "ok")
+  fourth_match: call(201, {}, "created")
diff --git a/benchmark/prepare_so_count_words.rb b/benchmark/prepare_so_count_words.rb
deleted file mode 100644
index ee2138cdb2..0000000000
--- a/benchmark/prepare_so_count_words.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-# prepare 'wc.input'
-
-def prepare_wc_input
-  wcinput = File.join(File.dirname($0), 'wc.input')
-  wcbase  = File.join(File.dirname($0), 'wc.input.base')
-  unless FileTest.exist?(wcinput)
-    data = File.read(wcbase)
-    13.times{
-      data << data
-    }
-    open(wcinput, 'w'){|f| f.write data}
-  end
-end
-
-prepare_wc_input
diff --git a/benchmark/prepare_so_k_nucleotide.rb b/benchmark/prepare_so_k_nucleotide.rb
deleted file mode 100644
index f28f4460a1..0000000000
--- a/benchmark/prepare_so_k_nucleotide.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-require File.join(File.dirname(__FILE__), 'make_fasta_output')
-prepare_fasta_output(100_000)
diff --git a/benchmark/prepare_so_reverse_complement.rb b/benchmark/prepare_so_reverse_complement.rb
deleted file mode 100644
index 7f089109de..0000000000
--- a/benchmark/prepare_so_reverse_complement.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-require File.join(File.dirname(__FILE__), 'make_fasta_output')
-prepare_fasta_output(2_500_000)
diff --git a/benchmark/range_last.yml b/benchmark/range_last.yml
new file mode 100644
index 0000000000..a6674f82ee
--- /dev/null
+++ b/benchmark/range_last.yml
@@ -0,0 +1,4 @@
+benchmark:
+  - (1..1_000_000).last(100)
+  - (1..1_000_000).last(1000)
+  - (1..1_000_000).last(10000)
diff --git a/benchmark/realpath.yml b/benchmark/realpath.yml
new file mode 100644
index 0000000000..90a029d5b9
--- /dev/null
+++ b/benchmark/realpath.yml
@@ -0,0 +1,30 @@
+prelude: |
+  f = File
+  pwd = Dir.pwd
+  Dir.mkdir('b') unless f.directory?('b')
+  f.write('b/a', '') unless f.file?('b/a')
+
+  relative = 'b/a'
+  absolute = File.join(pwd, relative)
+  dir = 'b'
+  file = 'a'
+
+  relative_dir = 'b/c'
+  absolute_dir = File.join(pwd, relative_dir)
+  file_dir = 'c'
+benchmark:
+  relative_nil: "f.realpath(relative, nil)"
+  absolute_nil: "f.realpath(absolute, nil)"
+  relative_relative: "f.realpath(file, dir)"
+  absolute_relative: "f.realpath(absolute, dir)"
+  relative_absolute: "f.realpath(relative, pwd)"
+  relative_nil_dir: "f.realdirpath(relative_dir, nil)"
+  absolute_nil_dir: "f.realdirpath(absolute_dir, nil)"
+  relative_relative_dir: "f.realdirpath(file_dir, dir)"
+  absolute_relative_dir: "f.realdirpath(absolute_dir, dir)"
+  relative_absolute_dir: "f.realdirpath(relative_dir, pwd)"
+  relative_nil_notexist: "f.realpath(relative_dir, nil) rescue nil"
+  absolute_nil_notexist: "f.realpath(absolute_dir, nil) rescue nil"
+  relative_relative_notexist: "f.realpath(file_dir, dir) rescue nil"
+  absolute_relative_notexist: "f.realpath(absolute_dir, dir) rescue nil"
+  relative_absolute_notexist: "f.realpath(relative_dir, pwd) rescue nil"
diff --git a/benchmark/report.rb b/benchmark/report.rb
deleted file mode 100644
index 8305330b45..0000000000
--- a/benchmark/report.rb
+++ /dev/null
@@ -1,81 +0,0 @@
-#
-# YARV benchmark driver
-#
-
-require 'yarvutil'
-require 'benchmark'
-require 'rbconfig'
-
-def exec_command type, file, w
-  <<-EOP
-  $DRIVER_PATH = '#{File.dirname($0)}'
-  $LOAD_PATH.replace $LOAD_PATH | #{$LOAD_PATH.inspect}
-  require 'benchmark'
-  require 'yarvutil'
-#  print '#{type}'
-  begin
-    puts Benchmark.measure{
-      #{w}('#{file}')
-    }.utime
-  rescue Exception => exec_command_error_variable
-    puts "\t" + exec_command_error_variable.message
-  end
-  EOP
-end
-
-def benchmark cmd
-  rubybin = ENV['RUBY'] || File.join(
-    Config::CONFIG["bindir"],
-    Config::CONFIG["ruby_install_name"] + Config::CONFIG["EXEEXT"])
-    
-  IO.popen(rubybin, 'r+'){|io|
-    io.write cmd
-    io.close_write
-    return io.gets
-  }
-end
-
-def ruby_exec file
-  prog = exec_command 'ruby', file, 'load'
-  benchmark prog
-end
-
-def yarv_exec file
-  prog = exec_command 'yarv', file, 'YARVUtil.load_bm'
-  benchmark prog
-end
-
-$wr = $wy = nil
-
-def measure bench
-  file = File.dirname($0) + "/bm_#{bench}.rb"
-  r = ruby_exec(file).to_f
-  y = yarv_exec(file).to_f
-  puts "#{bench}\t#{r}\t#{y}"
-end
-
-def measure2
-  r = ruby_exec.to_f
-  y = yarv_exec.to_f
-  puts r/y
-end
-
-if $0 == __FILE__
-  %w{
-    whileloop
-    whileloop2
-    times
-    const
-    method
-    poly_method
-    block
-    rescue
-    rescue2
-  }.each{|bench|
-    measure bench
-  }
-end
-
-
-
-
diff --git a/benchmark/require.yml b/benchmark/require.yml
new file mode 100644
index 0000000000..09f218cf08
--- /dev/null
+++ b/benchmark/require.yml
@@ -0,0 +1,32 @@
+prelude: |
+  require "fileutils"
+
+  def prepare
+    num_files = 10000
+
+    basename = File.dirname($0)
+    data_dir = File.join(basename, "bm_require.data")
+
+    # skip if all of files exists
+    if File.exist?(File.join(data_dir, "c#{num_files}.rb"))
+      return
+    end
+
+    FileUtils.mkdir_p(data_dir)
+
+    1.upto(num_files) do |i|
+      File.write("#{data_dir}/c#{i}.rb", "class C#{i}\n""end\n")
+    end
+  end
+
+  prepare
+benchmark:
+  require: |
+    $:.push File.join(File.dirname(__FILE__), "bm_require.data")
+
+    1.upto(10000) do |i|
+      require "c#{i}"
+    end
+
+    $:.pop
+loop_count: 1
diff --git a/benchmark/require_thread.yml b/benchmark/require_thread.yml
new file mode 100644
index 0000000000..0c63257106
--- /dev/null
+++ b/benchmark/require_thread.yml
@@ -0,0 +1,40 @@
+prelude: |
+  require "fileutils"
+
+  def prepare
+    num_files = 10000
+
+    basename = File.dirname($0)
+    data_dir = File.join(basename, "bm_require.data")
+
+    # skip if all of files exists
+    if File.exist?(File.join(data_dir, "c#{num_files}.rb"))
+      return
+    end
+
+    FileUtils.mkdir_p(data_dir)
+
+    1.upto(num_files) do |i|
+      File.write("#{data_dir}/c#{i}.rb", "class C#{i}\n""end\n")
+    end
+  end
+
+  prepare
+benchmark:
+  require_thread: |
+    $:.push File.join(File.dirname(__FILE__), "bm_require.data")
+
+    i=0
+    t = Thread.new do
+      while true
+        i = i+1 # dummy loop
+      end
+    end
+
+    1.upto(100) do |i|
+      require "c#{i}"
+    end
+
+    $:.pop
+    t.kill
+loop_count: 1
diff --git a/benchmark/run.rb b/benchmark/run.rb
deleted file mode 100644
index 6ef2943642..0000000000
--- a/benchmark/run.rb
+++ /dev/null
@@ -1,127 +0,0 @@
-#
-# Ruby benchmark driver
-#
-
-require 'benchmark'
-require 'rbconfig'
-
-$matzrubyonly = false
-$rubyonly = false
-
-$results  = []
-
-# prepare 'wc.input'
-def prepare_wc_input
-  wcinput = File.join(File.dirname($0), 'wc.input')
-  wcbase  = File.join(File.dirname($0), 'wc.input.base')
-  unless FileTest.exist?(wcinput)
-    data = File.read(wcbase)
-    13.times{
-      data << data
-    }
-    open(wcinput, 'w'){|f| f.write data}
-  end
-end
-
-prepare_wc_input
-
-def bm file
-  prog = File.readlines(file).map{|e| e.rstrip}.join("\n")
-  return if prog.empty?
-
-  /[a-z]+_(.+)\.rb/ =~ file
-  bm_name = $1
-  puts '-----------------------------------------------------------' unless $rubyonly || $matzrubyonly
-  puts "#{bm_name}: "
-  
-  
-puts <<EOS unless $matzrubyonly || $rubyonly
-#{prog}
---
-EOS
-  begin
-    result = [bm_name]
-    result << matzruby_exec(file) unless $rubyonly
-    result << ruby_exec(file) unless $matzrubyonly
-    $results << result
-
-  rescue Exception => e
-    puts
-    puts "** benchmark failure: #{e}"
-    puts e.backtrace
-  end
-end
-
-def benchmark file, bin
-  m = Benchmark.measure{
-    `#{bin} #{$opts} #{file}`
-  }
-  sec = '%.3f' % m.real
-  puts " #{sec}"
-  sec
-end
-
-def ruby_exec file
-  print 'ruby'
-  benchmark file, $ruby_program
-end
-
-def matzruby_exec file
-  print 'matz'
-  rubylib = ENV['RUBYLIB']
-  ENV['RUBYLIB'] = ''
-  r = benchmark file, $matzruby_program
-  ENV['RUBYLIB'] = rubylib
-  r
-end
-
-if $0 == __FILE__
-  ARGV.each{|arg|
-    case arg
-    when /\A--ruby=(.+)/
-      $ruby_program = $1
-    when /\A--matzruby=(.+)/
-      $matzruby_program = $1
-    when /\A--opts=(.+)/
-      $opts = $1
-    when /\A(-r|--only-ruby)\z/
-      $rubyonly = true
-    when /\A(-m|--only-matzruby)\z/
-      $matzrubyonly = true
-    end
-  }
-  ARGV.delete_if{|arg|
-    /\A-/ =~ arg
-  }
-  
-  puts "MatzRuby:"
-  system("#{$matzruby_program} -v")
-  puts "Ruby:"
-  system("#{$ruby_program} -v")
-  puts
-
-  if ARGV.empty?
-    Dir.glob(File.dirname(__FILE__) + '/bm_*.rb').sort.each{|file|
-      bm file
-    }
-  else
-    ARGV.each{|file|
-      Dir.glob(File.join(File.dirname(__FILE__), file + '*')){|ef|
-        # file = "#{File.dirname(__FILE__)}/#{file}.rb"
-        bm ef
-      }
-    }
-  end
-
-  puts
-  puts "-- benchmark summary ---------------------------"
-  $results.each{|res|
-    print res.shift, "\t"
-    (res||[]).each{|result|
-      /([\d\.]+)/ =~ result
-      print $1 + "\t" if $1
-    }
-    puts
-  }
-end
-
diff --git a/benchmark/runc.rb b/benchmark/runc.rb
deleted file mode 100644
index 14ab171c12..0000000000
--- a/benchmark/runc.rb
+++ /dev/null
@@ -1,29 +0,0 @@
-#
-#
-#
-
-require 'benchmark'
-require 'rbconfig'
-
-$rubybin = ENV['RUBY'] || File.join(
-  Config::CONFIG["bindir"],
-  Config::CONFIG["ruby_install_name"] + Config::CONFIG["EXEEXT"])
-
-def runfile file
-  puts file
-  file = File.join(File.dirname($0), 'contrib', file)
-  Benchmark.bm{|x|
-    x.report('ruby'){
-      system("#{$rubybin} #{file}")
-    }
-    x.report('yarv'){
-      system("#{$rubybin} -rite -I.. #{file}")
-    }
-  }
-end
-
-ARGV.each{|file|
-  runfile file
-}
-
-
diff --git a/benchmark/securerandom.rb b/benchmark/securerandom.rb
new file mode 100644
index 0000000000..a082ea6d5b
--- /dev/null
+++ b/benchmark/securerandom.rb
@@ -0,0 +1,5 @@
+require "securerandom"
+
+20_0000.times do
+  SecureRandom.random_number(100)
+end
diff --git a/benchmark/so_ackermann.rb b/benchmark/so_ackermann.rb
new file mode 100644
index 0000000000..4effa1ecaf
--- /dev/null
+++ b/benchmark/so_ackermann.rb
@@ -0,0 +1,19 @@
+#!/usr/bin/ruby
+# -*- Ruby -*-
+# $Id: ackermann-ruby.code,v 1.4 2004/11/13 07:40:41 bfulgham Exp $
+# http://www.bagley.org/~doug/shootout/
+
+def ack(m, n)
+    if m == 0 then
+        n + 1
+    elsif n == 0 then
+        ack(m - 1, 1)
+    else
+        ack(m - 1, ack(m, n - 1))
+    end
+end
+
+NUM = 9
+ack(3, NUM)
+
+
diff --git a/benchmark/so_array.rb b/benchmark/so_array.rb
new file mode 100644
index 0000000000..767e03db5f
--- /dev/null
+++ b/benchmark/so_array.rb
@@ -0,0 +1,23 @@
+#!/usr/bin/ruby
+# -*- Ruby -*-
+# $Id: ary-ruby.code,v 1.4 2004/11/13 07:41:27 bfulgham Exp $
+# http://www.bagley.org/~doug/shootout/
+# with help from Paul Brannan and Mark Hubbart
+
+n = 9000 # Integer(ARGV.shift || 1)
+
+x = Array.new(n)
+y = Array.new(n, 0)
+
+n.times{|bi|
+  x[bi] = bi + 1
+}
+
+(0 .. 999).each do |e|
+  (n-1).step(0,-1) do |bi|
+    y[bi] += x.at(bi)
+  end
+end
+# puts "#{y.first} #{y.last}"
+
+
diff --git a/benchmark/so_binary_trees.rb b/benchmark/so_binary_trees.rb
new file mode 100644
index 0000000000..b1693e4109
--- /dev/null
+++ b/benchmark/so_binary_trees.rb
@@ -0,0 +1,62 @@
+# The Computer Language Shootout Benchmarks
+# http://shootout.alioth.debian.org
+#
+# contributed by Jesse Millikan
+
+# disable output
+alias puts_orig puts
+def puts str
+  # disable puts
+end
+
+def item_check(tree)
+ if tree[0] == nil
+  tree[1]
+ else
+  tree[1] + item_check(tree[0]) - item_check(tree[2])
+ end
+end
+
+def bottom_up_tree(item, depth)
+ if depth > 0
+  item_item = 2 * item
+  depth -= 1
+  [bottom_up_tree(item_item - 1, depth), item, bottom_up_tree(item_item, depth)]
+ else
+  [nil, item, nil]
+ end
+end
+
+max_depth = 16 # ARGV[0].to_i
+min_depth = 4
+
+max_depth = min_depth + 2 if min_depth + 2 > max_depth
+
+stretch_depth = max_depth + 1
+stretch_tree = bottom_up_tree(0, stretch_depth)
+
+puts "stretch tree of depth #{stretch_depth}\t check: #{item_check(stretch_tree)}"
+stretch_tree = nil
+
+long_lived_tree = bottom_up_tree(0, max_depth)
+
+min_depth.step(max_depth + 1, 2) do |depth|
+ iterations = 2**(max_depth - depth + min_depth)
+
+ check = 0
+
+ for i in 1..iterations
+  temp_tree = bottom_up_tree(i, depth)
+  check += item_check(temp_tree)
+
+  temp_tree = bottom_up_tree(-i, depth)
+  check += item_check(temp_tree)
+ end
+
+ puts "#{iterations * 2}\t trees of depth #{depth}\t check: #{check}"
+end
+
+puts "long lived tree of depth #{max_depth}\t check: #{item_check(long_lived_tree)}"
+
+undef puts
+alias puts puts_orig
diff --git a/benchmark/so_concatenate.rb b/benchmark/so_concatenate.rb
new file mode 100644
index 0000000000..4468e20ac8
--- /dev/null
+++ b/benchmark/so_concatenate.rb
@@ -0,0 +1,18 @@
+#!/usr/bin/ruby
+# -*- Ruby -*-
+# $Id: strcat-ruby.code,v 1.4 2004/11/13 07:43:28 bfulgham Exp $
+# http://www.bagley.org/~doug/shootout/
+# based on code from Aristarkh A Zagorodnikov and Dat Nguyen
+
+STUFF = "hello\n"
+i = 0
+while i<10
+  i += 1
+  hello = ''
+  4_000_000.times do |e|
+    hello << STUFF
+  end
+end
+# puts hello.length
+
+
diff --git a/benchmark/so_count_words.yml b/benchmark/so_count_words.yml
new file mode 100644
index 0000000000..99683505f9
--- /dev/null
+++ b/benchmark/so_count_words.yml
@@ -0,0 +1,65 @@
+prelude: |
+  #!/usr/bin/ruby
+
+  wc_input_base = <<EOS
+  Subject:      Re: Who was Izchak Miller?
+  From:         "Jane D. Anonymous" <nobody@yale.edu>
+  Date:         1996/04/28
+  Message-Id:   <4lv7bc$oh@news.ycc.yale.edu>
+  References:   <317C405E.5DFA@panix.com> <4lk6vl$gde@ns.oar.net>
+  To:           75176.2330@compuserve.com
+  Content-Type: text/plain; charset=us-ascii
+  Organization: Yale University
+  X-Url:        news:4lk6vl$gde@ns.oar.net
+  Mime-Version: 1.0
+  Newsgroups:   rec.games.roguelike.nethack
+  X-Mailer:     Mozilla 1.1N (Macintosh; I; 68K)
+
+  Hello there, Izchak Miller was my father.  When I was younger I spent 
+  many a night, hunched over the keyboard with a cup of tea, playing 
+  nethack with him and my brother.  my dad was a philosopher with a strong 
+  weakness for fantasy/sci fi.  I remember when he started to get involved 
+  with the Nethack team- my brother's Dungeons and Dragons monster book 
+  found a regular place beside my dad's desk. it's nice to see him living 
+  on in the game he loved so much :-).  
+                                                                    Tamar Miller
+
+  The following is a really long word of 5000 characters:
+
+  wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww
+  EOS
+
+  # prepare 'wc.input'
+
+  def prepare_wc_input(wcbase)
+    wcinput = File.join(File.dirname($0), 'wc.input')
+    unless FileTest.exist?(wcinput)
+      data = wcbase.dup
+      13.times{
+        data << data
+      }
+      open(wcinput, 'w'){|f| f.write data}
+    end
+  end
+
+  prepare_wc_input(wc_input_base)
+
+benchmark:
+  so_count_words: |
+    # $Id: wc-ruby.code,v 1.4 2004/11/13 07:43:32 bfulgham Exp $
+    # http://www.bagley.org/~doug/shootout/
+    # with help from Paul Brannan
+    input = open(File.join(File.dirname($0), 'wc.input'), 'rb')
+
+    nl = nw = nc = 0
+    while true
+      tmp = input.read(4096) or break
+      data = tmp << (input.gets || "")
+      nc += data.length
+      nl += data.count("\n")
+      ((data.strip! || data).tr!("\n", " ") || data).squeeze!
+      nw += data.count(" ") + 1
+    end
+    # STDERR.puts "#{nl} #{nw} #{nc}"
+
+loop_count: 1
diff --git a/benchmark/so_exception.rb b/benchmark/so_exception.rb
new file mode 100644
index 0000000000..eb205b4df1
--- /dev/null
+++ b/benchmark/so_exception.rb
@@ -0,0 +1,61 @@
+#!/usr/bin/ruby
+# -*- Ruby -*-
+# $Id: except-ruby.code,v 1.4 2004/11/13 07:41:33 bfulgham Exp $
+# http://www.bagley.org/~doug/shootout/
+
+$HI = 0
+$LO = 0
+NUM = 250000 # Integer(ARGV[0] || 1)
+
+
+class Lo_Exception < Exception
+  def initialize(num)
+    @value = num
+  end
+end
+
+class Hi_Exception < Exception
+  def initialize(num)
+    @value = num
+  end
+end
+
+def some_function(num)
+  begin
+    hi_function(num)
+  rescue
+    print "We shouldn't get here, exception is: #{$!.type}\n"
+  end
+end
+
+def hi_function(num)
+  begin
+    lo_function(num)
+  rescue Hi_Exception
+    $HI = $HI + 1
+  end
+end
+
+def lo_function(num)
+  begin
+    blowup(num)
+  rescue Lo_Exception
+    $LO = $LO + 1
+  end
+end
+
+def blowup(num)
+  if num % 2 == 0
+    raise Lo_Exception.new(num)
+  else
+    raise Hi_Exception.new(num)
+  end
+end
+
+
+i = 1
+max = NUM+1
+while i < max
+  i += 1
+  some_function(i+1)
+end
diff --git a/benchmark/so_fannkuch.rb b/benchmark/so_fannkuch.rb
new file mode 100644
index 0000000000..bac5ecd44c
--- /dev/null
+++ b/benchmark/so_fannkuch.rb
@@ -0,0 +1,45 @@
+# The Computer Language Shootout
+# http://shootout.alioth.debian.org/
+# Contributed by Sokolov Yura
+# Modified by Ryan Williams
+
+def fannkuch(n)
+   maxFlips, m, r, check = 0, n-1, n, 0
+   count = (1..n).to_a
+   perm = (1..n).to_a
+
+   while true
+      if check < 30
+         puts "#{perm}"
+         check += 1
+      end
+
+      while r != 1
+         count[r-1] = r
+         r -= 1
+      end
+
+      if perm[0] != 1 and perm[m] != n
+         perml = perm.clone #.dup
+         flips = 0
+         while (k = perml.first ) != 1
+            perml = perml.slice!(0, k).reverse + perml
+            flips += 1
+         end
+         maxFlips = flips if flips > maxFlips
+      end
+      while true
+         if r==n then return maxFlips end
+         perm.insert r,perm.shift
+         break if (count[r] -= 1) > 0
+         r += 1
+      end
+   end
+end
+
+def puts *args
+end
+
+N = 9 # (ARGV[0] || 1).to_i
+puts "Pfannkuchen(#{N}) = #{fannkuch(N)}"
+
diff --git a/benchmark/so_fasta.rb b/benchmark/so_fasta.rb
new file mode 100644
index 0000000000..dcc6b39507
--- /dev/null
+++ b/benchmark/so_fasta.rb
@@ -0,0 +1,81 @@
+# The Computer Language Shootout
+# http://shootout.alioth.debian.org/
+# Contributed by Sokolov Yura
+
+$last = 42.0
+def gen_random(max, im=139968, ia=3877, ic=29573)
+    (max * ($last = ($last * ia + ic) % im)) / im
+end
+
+alu =
+   "GGCCGGGCGCGGTGGCTCACGCCTGTAATCCCAGCACTTTGG"+
+   "GAGGCCGAGGCGGGCGGATCACCTGAGGTCAGGAGTTCGAGA"+
+   "CCAGCCTGGCCAACATGGTGAAACCCCGTCTCTACTAAAAAT"+
+   "ACAAAAATTAGCCGGGCGTGGTGGCGCGCGCCTGTAATCCCA"+
+   "GCTACTCGGGAGGCTGAGGCAGGAGAATCGCTTGAACCCGGG"+
+   "AGGCGGAGGTTGCAGTGAGCCGAGATCGCGCCACTGCACTCC"+
+   "AGCCTGGGCGACAGAGCGAGACTCCGTCTCAAAAA"
+
+iub = [
+    ["a", 0.27],
+    ["c", 0.12],
+    ["g", 0.12],
+    ["t", 0.27],
+
+    ["B", 0.02],
+    ["D", 0.02],
+    ["H", 0.02],
+    ["K", 0.02],
+    ["M", 0.02],
+    ["N", 0.02],
+    ["R", 0.02],
+    ["S", 0.02],
+    ["V", 0.02],
+    ["W", 0.02],
+    ["Y", 0.02],
+]
+homosapiens = [
+    ["a", 0.3029549426680],
+    ["c", 0.1979883004921],
+    ["g", 0.1975473066391],
+    ["t", 0.3015094502008],
+]
+
+def make_repeat_fasta(id, desc, src, n)
+    puts ">#{id} #{desc}"
+    v = nil
+    width = 60
+    l = src.length
+    s = src * ((n / l) + 1)
+    s.slice!(n, l)
+    puts(s.scan(/.{1,#{width}}/).join("\n"))
+end
+
+def make_random_fasta(id, desc, table, n)
+    puts ">#{id} #{desc}"
+    rand, v = nil,nil
+    width = 60
+    chunk = 1 * width
+    prob = 0.0
+    table.each{|v| v[1]= (prob += v[1])}
+    for i in 1..(n/width)
+        puts((1..width).collect{
+            rand = gen_random(1.0)
+            table.find{|v| v[1]>rand}[0]
+        }.join)
+    end
+    if n%width != 0
+        puts((1..(n%width)).collect{
+            rand = gen_random(1.0)
+            table.find{|v| v[1]>rand}[0]
+        }.join)
+    end
+end
+
+
+n = (ARGV[0] or 250_000).to_i
+
+make_repeat_fasta('ONE', 'Homo sapiens alu', alu, n*2)
+make_random_fasta('TWO', 'IUB ambiguity codes', iub, n*3)
+make_random_fasta('THREE', 'Homo sapiens frequency', homosapiens, n*5)
+
diff --git a/benchmark/so_k_nucleotide.yml b/benchmark/so_k_nucleotide.yml
new file mode 100644
index 0000000000..d7df086c39
--- /dev/null
+++ b/benchmark/so_k_nucleotide.yml
@@ -0,0 +1,155 @@
+prelude: |
+  bm_so_fasta = <<'EOS'
+  # The Computer Language Shootout
+  # http://shootout.alioth.debian.org/
+  # Contributed by Sokolov Yura
+
+  $last = 42.0
+  def gen_random(max, im=139968, ia=3877, ic=29573)
+      (max * ($last = ($last * ia + ic) % im)) / im
+  end
+
+  alu =
+     "GGCCGGGCGCGGTGGCTCACGCCTGTAATCCCAGCACTTTGG"+
+     "GAGGCCGAGGCGGGCGGATCACCTGAGGTCAGGAGTTCGAGA"+
+     "CCAGCCTGGCCAACATGGTGAAACCCCGTCTCTACTAAAAAT"+
+     "ACAAAAATTAGCCGGGCGTGGTGGCGCGCGCCTGTAATCCCA"+
+     "GCTACTCGGGAGGCTGAGGCAGGAGAATCGCTTGAACCCGGG"+
+     "AGGCGGAGGTTGCAGTGAGCCGAGATCGCGCCACTGCACTCC"+
+     "AGCCTGGGCGACAGAGCGAGACTCCGTCTCAAAAA"
+
+  iub = [
+      ["a", 0.27],
+      ["c", 0.12],
+      ["g", 0.12],
+      ["t", 0.27],
+
+      ["B", 0.02],
+      ["D", 0.02],
+      ["H", 0.02],
+      ["K", 0.02],
+      ["M", 0.02],
+      ["N", 0.02],
+      ["R", 0.02],
+      ["S", 0.02],
+      ["V", 0.02],
+      ["W", 0.02],
+      ["Y", 0.02],
+  ]
+  homosapiens = [
+      ["a", 0.3029549426680],
+      ["c", 0.1979883004921],
+      ["g", 0.1975473066391],
+      ["t", 0.3015094502008],
+  ]
+
+  def make_repeat_fasta(id, desc, src, n)
+      puts ">#{id} #{desc}"
+      v = nil
+      width = 60
+      l = src.length
+      s = src * ((n / l) + 1)
+      s.slice!(n, l)
+      puts(s.scan(/.{1,#{width}}/).join("\n"))
+  end
+
+  def make_random_fasta(id, desc, table, n)
+      puts ">#{id} #{desc}"
+      rand, v = nil,nil
+      width = 60
+      chunk = 1 * width
+      prob = 0.0
+      table.each{|v| v[1]= (prob += v[1])}
+      for i in 1..(n/width)
+          puts((1..width).collect{
+              rand = gen_random(1.0)
+              table.find{|v| v[1]>rand}[0]
+          }.join)
+      end
+      if n%width != 0
+          puts((1..(n%width)).collect{
+              rand = gen_random(1.0)
+              table.find{|v| v[1]>rand}[0]
+          }.join)
+      end
+  end
+
+
+  n = (ARGV[0] or 250_000).to_i
+
+  make_repeat_fasta('ONE', 'Homo sapiens alu', alu, n*2)
+  make_random_fasta('TWO', 'IUB ambiguity codes', iub, n*3)
+  make_random_fasta('THREE', 'Homo sapiens frequency', homosapiens, n*5)
+  EOS
+benchmark:
+  - name: so_k_nucleotide
+    prelude: |
+      script = File.join(File.dirname($0), 'bm_so_fasta.rb')
+      File.write(script, bm_so_fasta)
+
+      def prepare_fasta_output n
+        filebase = File.join(File.dirname($0), 'fasta.output')
+        script = File.join(File.dirname($0), 'bm_so_fasta.rb')
+        file = "#{filebase}.#{n}"
+
+        unless FileTest.exist?(file)
+          STDERR.puts "preparing #{file}"
+
+          open(file, 'w'){|f|
+            ARGV[0] = n
+            $stdout = f
+            load script
+            $stdout = STDOUT
+          }
+        end
+      end
+      prepare_fasta_output(100_000)
+    script: |
+      # The Computer Language Shootout
+      # http://shootout.alioth.debian.org
+      #
+      # contributed by jose fco. gonzalez
+      # modified by Sokolov Yura
+
+      seq = String.new
+
+      def frecuency( seq,length )
+          n, table = seq.length - length + 1, Hash.new(0)
+          f, i = nil, nil
+          (0 ... length).each do |f|
+              (f ... n).step(length) do |i|
+                  table[seq[i,length]] += 1
+              end
+          end
+          [n,table]
+
+      end
+
+      def sort_by_freq( seq,length )
+          n,table = frecuency( seq,length )
+          a, b, v = nil, nil, nil
+          table.sort{|a,b| b[1] <=> a[1]}.each do |v|
+              puts "%s %.3f" % [v[0].upcase,((v[1]*100).to_f/n)]
+          end
+          puts
+      end
+
+      def find_seq( seq,s )
+          n,table = frecuency( seq,s.length )
+          puts "#{table[s].to_s}\t#{s.upcase}"
+      end
+
+      input = open(File.join(File.dirname($0), 'fasta.output.100000'), 'rb')
+
+      line = input.gets while line !~ /^>THREE/
+      line = input.gets
+
+      while (line !~ /^>/) & line do
+          seq << line.chomp
+          line = input.gets
+      end
+
+      [1,2].each {|i| sort_by_freq( seq,i ) }
+
+      %w(ggt ggta ggtatt ggtattttaatt ggtattttaatttatagt).each{|s| find_seq( seq,s) }
+    loop_count: 1
diff --git a/benchmark/so_lists.rb b/benchmark/so_lists.rb
new file mode 100644
index 0000000000..e8f4a2a5f7
--- /dev/null
+++ b/benchmark/so_lists.rb
@@ -0,0 +1,47 @@
+#from http://www.bagley.org/~doug/shootout/bench/lists/lists.ruby
+
+NUM = 300
+SIZE = 10000
+
+def test_lists()
+  # create a list of integers (Li1) from 1 to SIZE
+  li1 = (1..SIZE).to_a
+  # copy the list to li2 (not by individual items)
+  li2 = li1.dup
+  # remove each individual item from left side of li2 and
+  # append to right side of li3 (preserving order)
+  li3 = Array.new
+  while (not li2.empty?)
+    li3.push(li2.shift)
+  end
+  # li2 must now be empty
+  # remove each individual item from right side of li3 and
+  # append to right side of li2 (reversing list)
+  while (not li3.empty?)
+    li2.push(li3.pop)
+  end
+  # li3 must now be empty
+  # reverse li1 in place
+  li1.reverse!
+  # check that first item is now SIZE
+  if li1[0] != SIZE then
+    p "not SIZE"
+    0
+  else
+    # compare li1 and li2 for equality
+    if li1 != li2 then
+      return(0)
+    else
+      # return the length of the list
+      li1.length
+    end
+  end
+end
+
+i = 0
+while i<NUM
+  i += 1
+  result = test_lists()
+end
+
+result
diff --git a/benchmark/bm_so_mandelbrot.rb b/benchmark/so_mandelbrot.rb
index 76331c64b8..76331c64b8 100644
--- a/benchmark/bm_so_mandelbrot.rb
+++ b/benchmark/so_mandelbrot.rb
diff --git a/benchmark/so_matrix.rb b/benchmark/so_matrix.rb
new file mode 100644
index 0000000000..2d1e72bda9
--- /dev/null
+++ b/benchmark/so_matrix.rb
@@ -0,0 +1,48 @@
+#!/usr/bin/ruby
+# -*- Ruby -*-
+# $Id: matrix-ruby.code,v 1.4 2004/11/13 07:42:14 bfulgham Exp $
+# http://www.bagley.org/~doug/shootout/
+
+n = 60 #Integer(ARGV.shift || 1)
+
+size = 40
+
+def mkmatrix(rows, cols)
+    count = 1
+    mx = Array.new(rows)
+    (0 .. (rows - 1)).each do |bi|
+        row = Array.new(cols, 0)
+        (0 .. (cols - 1)).each do |j|
+            row[j] = count
+            count += 1
+        end
+        mx[bi] = row
+    end
+    mx
+end
+
+def mmult(rows, cols, m1, m2)
+    m3 = Array.new(rows)
+    (0 .. (rows - 1)).each do |bi|
+        row = Array.new(cols, 0)
+        (0 .. (cols - 1)).each do |j|
+            val = 0
+            (0 .. (cols - 1)).each do |k|
+                val += m1.at(bi).at(k) * m2.at(k).at(j)
+            end
+            row[j] = val
+        end
+        m3[bi] = row
+    end
+    m3
+end
+
+m1 = mkmatrix(size, size)
+m2 = mkmatrix(size, size)
+mm = Array.new
+n.times do
+    mm = mmult(size, size, m1, m2)
+end
+# puts "#{mm[0][0]} #{mm[2][3]} #{mm[3][2]} #{mm[4][4]}"
+
+
diff --git a/benchmark/so_meteor_contest.rb b/benchmark/so_meteor_contest.rb
new file mode 100644
index 0000000000..8c136baa6c
--- /dev/null
+++ b/benchmark/so_meteor_contest.rb
@@ -0,0 +1,563 @@
+#!/usr/bin/env ruby
+#
+# The Computer Language Shootout
+#   http://shootout.alioth.debian.org
+#   contributed by Kevin Barnes (Ruby novice)
+
+# PROGRAM:  the main body is at the bottom.
+#   1) read about the problem here: http://www-128.ibm.com/developerworks/java/library/j-javaopt/
+#   2) see how I represent a board as a bitmask by reading the blank_board comments
+#   3) read as your mental paths take you
+
+def print *args
+end
+
+# class to represent all information about a particular rotation of a particular piece
+class Rotation
+  # an array (by location) containing a bit mask for how the piece maps at the given location.
+  # if the rotation is invalid at that location the mask will contain false
+  attr_reader :start_masks
+
+  # maps a direction to a relative location.  these differ depending on whether it is an even or
+  # odd row being mapped from
+  @@rotation_even_adder = { :west => -1, :east => 1, :nw => -7, :ne => -6, :sw => 5, :se => 6 }
+  @@rotation_odd_adder = { :west => -1, :east => 1, :nw => -6, :ne => -5, :sw => 6, :se => 7 }
+
+  def initialize( directions )
+    @even_offsets, @odd_offsets = normalize_offsets( get_values( directions ))
+
+    @even_mask = mask_for_offsets( @even_offsets)
+    @odd_mask = mask_for_offsets( @odd_offsets)
+
+    @start_masks = Array.new(60)
+
+    # create the rotational masks by placing the base mask at the location and seeing if
+    # 1) it overlaps the boundaries and 2) it produces a prunable board.  if either of these
+    # is true the piece cannot be placed
+    0.upto(59) do | offset |
+      mask = is_even(offset) ? (@even_mask << offset) : (@odd_mask << offset)
+      if (blank_board & mask == 0 && !prunable(blank_board | mask, 0, true)) then
+        imask = compute_required( mask, offset)
+        @start_masks[offset] = [ mask, imask, imask | mask ]
+      else
+        @start_masks[offset] = false
+      end
+    end
+  end
+
+  def compute_required( mask, offset )
+    board = blank_board
+    0.upto(offset) { | i | board |= 1 << i }
+    board |= mask
+    return 0 if (!prunable(board | mask, offset))
+    board = flood_fill(board,58)
+    count = 0
+    imask = 0
+    0.upto(59) do | i |
+      if (board[i] == 0) then
+        imask |= (1 << i)
+        count += 1
+      end
+    end
+    (count > 0 && count < 5) ? imask : 0
+  end
+
+  def flood_fill( board, location)
+    return board if (board[location] == 1)
+    board |= 1 << location
+    row, col = location.divmod(6)
+    board = flood_fill( board, location - 1) if (col > 0)
+    board = flood_fill( board, location + 1) if (col < 4)
+    if (row % 2 == 0) then
+      board = flood_fill( board, location - 7) if (col > 0 && row > 0)
+      board = flood_fill( board, location - 6) if (row > 0)
+      board = flood_fill( board, location + 6) if (row < 9)
+      board = flood_fill( board, location + 5) if (col > 0 && row < 9)
+    else
+      board = flood_fill( board, location - 5) if (col < 4 && row > 0)
+      board = flood_fill( board, location - 6) if (row > 0)
+      board = flood_fill( board, location + 6) if (row < 9)
+      board = flood_fill( board, location + 7) if (col < 4 && row < 9)
+    end
+    board
+  end
+
+  # given a location, produces a list of relative locations covered by the piece at this rotation
+  def offsets( location)
+    if is_even( location) then
+      @even_offsets.collect { | value | value + location }
+    else
+      @odd_offsets.collect { | value | value + location }
+    end
+  end
+
+  # returns a set of offsets relative to the top-left most piece of the rotation (by even or odd rows)
+  # this is hard to explain. imagine we have this partial board:
+  #   0 0 0 0 0 x        [positions 0-5]
+  #    0 0 1 1 0 x       [positions 6-11]
+  #   0 0 1 0 0 x        [positions 12-17]
+  #    0 1 0 0 0 x       [positions 18-23]
+  #   0 1 0 0 0 x        [positions 24-29]
+  #    0 0 0 0 0 x       [positions 30-35]
+  #       ...
+  # The top-left of the piece is at position 8, the
+  # board would be passed as a set of positions (values array) containing [8,9,14,19,25] not necessarily in that
+  # sorted order.  Since that array starts on an odd row, the offsets for an odd row are: [0,1,6,11,17] obtained
+  # by subtracting 8 from everything.  Now imagine the piece shifted up and to the right so it's on an even row:
+  #   0 0 0 1 1 x        [positions 0-5]
+  #    0 0 1 0 0 x       [positions 6-11]
+  #   0 0 1 0 0 x        [positions 12-17]
+  #    0 1 0 0 0 x       [positions 18-23]
+  #   0 0 0 0 0 x        [positions 24-29]
+  #    0 0 0 0 0 x       [positions 30-35]
+  #       ...
+  # Now the positions are [3,4,8,14,19] which after subtracting the lowest value (3) gives [0,1,5,11,16] thus, the
+  # offsets for this particular piece are (in even, odd order) [0,1,5,11,16],[0,1,6,11,17] which is what
+  # this function would return
+  def normalize_offsets( values)
+    min = values.min
+    even_min = is_even(min)
+    other_min = even_min ? min + 6 : min + 7
+    other_values = values.collect do | value |
+      if is_even(value) then
+        value + 6 - other_min
+      else
+        value + 7 - other_min
+      end
+    end
+    values.collect! { | value | value - min }
+
+    if even_min then
+      [values, other_values]
+    else
+      [other_values, values]
+    end
+  end
+
+  # produce a bitmask representation of an array of offset locations
+  def mask_for_offsets( offsets )
+    mask = 0
+    offsets.each { | value | mask = mask + ( 1 << value ) }
+    mask
+  end
+
+  # finds a "safe" position that a position as described by a list of directions can be placed
+  # without falling off any edge of the board.  the values returned a location to place the first piece
+  # at so it will fit after making the described moves
+  def start_adjust( directions )
+    south = east = 0;
+    directions.each do | direction |
+      east += 1 if ( direction == :sw || direction == :nw || direction == :west )
+      south += 1 if ( direction == :nw || direction == :ne )
+    end
+    south * 6 + east
+  end
+
+  # given a set of directions places the piece (as defined by a set of directions) on the board at
+  # a location that will not take it off the edge
+  def get_values( directions )
+    start = start_adjust(directions)
+    values = [ start ]
+    directions.each do | direction |
+      if (start % 12 >= 6) then
+        start += @@rotation_odd_adder[direction]
+      else
+        start += @@rotation_even_adder[direction]
+      end
+      values += [ start ]
+    end
+
+    # some moves take you back to an existing location, we'll strip duplicates
+    values.uniq
+  end
+end
+
+# describes a piece and caches information about its rotations to as to be efficient for iteration
+# ATTRIBUTES:
+#   rotations -- all the rotations of the piece
+#   type -- a numeic "name" of the piece
+#   masks -- an array by location of all legal rotational masks (a n inner array) for that location
+#   placed -- the mask that this piece was last placed at (not a location, but the actual mask used)
+class Piece
+  attr_reader :rotations, :type, :masks
+  attr_accessor :placed
+
+  # transform hashes that change one direction into another when you either flip or rotate a set of directions
+  @@flip_converter = { :west => :west, :east => :east, :nw => :sw, :ne => :se, :sw => :nw, :se => :ne }
+  @@rotate_converter = { :west => :nw, :east => :se, :nw => :ne, :ne => :east, :sw => :west, :se => :sw }
+
+  def initialize( directions, type )
+    @type = type
+    @rotations = Array.new();
+    @map = {}
+
+    generate_rotations( directions )
+    directions.collect! { | value | @@flip_converter[value] }
+    generate_rotations( directions )
+
+    # creates the masks AND a map that returns [location, rotation] for any given mask
+    # this is used when a board is found and we want to draw it, otherwise the map is unused
+    @masks = Array.new();
+    0.upto(59) do | i |
+      even = true
+      @masks[i] = @rotations.collect do | rotation |
+        mask = rotation.start_masks[i]
+        @map[mask[0]] = [ i, rotation ] if (mask)
+        mask || nil
+      end
+      @masks[i].compact!
+    end
+  end
+
+  # rotates a set of directions through all six angles and adds a Rotation to the list for each one
+  def generate_rotations( directions )
+    6.times do
+      rotations.push( Rotation.new(directions))
+      directions.collect! { | value | @@rotate_converter[value] }
+    end
+  end
+
+  # given a board string, adds this piece to the board at whatever location/rotation
+  # important: the outbound board string is 5 wide, the normal location notation is six wide (padded)
+  def fill_string( board_string)
+    location, rotation = @map[@placed]
+    rotation.offsets(location).each do | offset |
+      row, col = offset.divmod(6)
+      board_string[ row*5 + col, 1 ] = @type.to_s
+    end
+  end
+end
+
+# a blank bit board having this form:
+#
+#    0 0 0 0 0 1
+#     0 0 0 0 0 1
+#    0 0 0 0 0 1
+#     0 0 0 0 0 1
+#    0 0 0 0 0 1
+#     0 0 0 0 0 1
+#    0 0 0 0 0 1
+#     0 0 0 0 0 1
+#    0 0 0 0 0 1
+#     0 0 0 0 0 1
+#    1 1 1 1 1 1
+#
+# where left lest significant bit is the top left and the most significant is the lower right
+# the actual board only consists of the 0 places, the 1 places are blockers to keep things from running
+# off the edges or bottom
+def blank_board
+  0b111111100000100000100000100000100000100000100000100000100000100000
+end
+
+def full_board
+  0b111111111111111111111111111111111111111111111111111111111111111111
+end
+
+# determines if a location (bit position) is in an even row
+def is_even( location)
+  (location % 12) < 6
+end
+
+# support function that create three utility maps:
+#  $converter -- for each row an array that maps a five bit row (via array mapping)
+#                to the a five bit representation of the bits below it
+#  $bit_count -- maps a five bit row (via array mapping) to the number of 1s in the row
+#  @@new_regions -- maps a five bit row (via array mapping) to an array of "region" arrays
+#                   a region array has three values the first is a mask of bits in the region,
+#                   the second is the count of those bits and the third is identical to the first
+#                   examples:
+#                           0b10010 => [ 0b01100, 2, 0b01100 ], [ 0b00001, 1, 0b00001]
+#                           0b01010 => [ 0b10000, 1, 0b10000 ], [ 0b00100, 1, 0b00100 ], [ 0b00001, 1, 0b00001]
+#                           0b10001 => [ 0b01110, 3, 0b01110 ]
+def create_collector_support
+  odd_map = [0b11, 0b110, 0b1100, 0b11000, 0b10000]
+  even_map = [0b1, 0b11, 0b110, 0b1100, 0b11000]
+
+  all_odds = Array.new(0b100000)
+  all_evens = Array.new(0b100000)
+  bit_counts = Array.new(0b100000)
+  new_regions = Array.new(0b100000)
+  0.upto(0b11111) do | i |
+    bit_count = odd = even = 0
+    0.upto(4) do | bit |
+      if (i[bit] == 1) then
+        bit_count += 1
+        odd |= odd_map[bit]
+        even |= even_map[bit]
+      end
+    end
+    all_odds[i] = odd
+    all_evens[i] = even
+    bit_counts[i] = bit_count
+    new_regions[i] = create_regions( i)
+  end
+
+  $converter = []
+  10.times { | row | $converter.push((row % 2 == 0) ? all_evens : all_odds) }
+  $bit_counts = bit_counts
+  $regions = new_regions.collect { | set | set.collect { | value | [ value, bit_counts[value], value] } }
+end
+
+# determines if a board is punable, meaning that there is no possibility that it
+# can be filled up with pieces.  A board is prunable if there is a grouping of unfilled spaces
+# that are not a multiple of five.  The following board is an example of a prunable board:
+#    0 0 1 0 0
+#     0 1 0 0 0
+#    1 1 0 0 0
+#     0 1 0 0 0
+#    0 0 0 0 0
+#       ...
+#
+# This board is prunable because the top left corner is only 3 bits in area, no piece will ever fit it
+# parameters:
+#   board -- an initial bit board (6 bit padded rows, see blank_board for format)
+#   location -- starting location, everything above and to the left is already full
+#   slotting -- set to true only when testing initial pieces, when filling normally
+#               additional assumptions are possible
+#
+# Algorithm:
+#    The algorithm starts at the top row (as determined by location) and iterates a row at a time
+#    maintainng counts of active open areas (kept in the collector array) each collector contains
+#    three values at the start of an iteration:
+#          0: mask of bits that would be adjacent to the collector in this row
+#          1: the number of bits collected so far
+#          2: a scratch space starting as zero, but used during the computation to represent
+#             the empty bits in the new row that are adjacent (position 0)
+#  The exact procedure is described in-code
+def prunable( board, location, slotting = false)
+  collectors = []
+  # loop across the rows
+  (location / 6).to_i.upto(9) do | row_on |
+    # obtain a set of regions representing the bits of the current row.
+    regions = $regions[(board >> (row_on * 6)) & 0b11111]
+    converter = $converter[row_on]
+
+    # track the number of collectors at the start of the cycle so that
+    # we don't compute against newly created collectors, only existing collectors
+    initial_collector_count = collectors.length
+
+    # loop against the regions.  For each region of the row
+    # we will see if it connects to one or more existing collectors.
+    # if it connects to 1 collector, the bits from the region are added to the
+    # bits of the collector and the mask is placed in collector[2]
+    # If the region overlaps more than one collector then all the collectors
+    # it overlaps with are merged into the first one (the others are set to nil in the array)
+    # if NO collectors are found then the region is copied as a new collector
+    regions.each do | region |
+      collector_found = nil
+      region_mask = region[2]
+      initial_collector_count.times do | collector_num |
+        collector = collectors[collector_num]
+        if (collector) then
+          collector_mask = collector[0]
+          if (collector_mask & region_mask != 0) then
+            if (collector_found) then
+              collector_found[0] |= collector_mask
+              collector_found[1] += collector[1]
+              collector_found[2] |= collector[2]
+              collectors[collector_num] = nil
+            else
+              collector_found = collector
+              collector[1] += region[1]
+              collector[2] |= region_mask
+            end
+          end
+        end
+      end
+      if (collector_found == nil) then
+        collectors.push(Array.new(region))
+      end
+    end
+
+    # check the existing collectors, if any collector overlapped no bits in the region its [2] value will
+    # be zero.  The size of any such reaason is tested if it is not a multiple of five true is returned since
+    # the board is prunable.  if it is a multiple of five it is removed.
+    # Collector that are still active have a new adjacent value [0] set based n the matched bits
+    # and have [2] cleared out for the next cycle.
+    collectors.length.times do | collector_num |
+      collector = collectors[collector_num]
+      if (collector) then
+        if (collector[2] == 0) then
+          return true if (collector[1] % 5 != 0)
+          collectors[collector_num] = nil
+        else
+          # if a collector matches all bits in the row then we can return unprunable early for the
+          # following reasons:
+          #    1) there can be no more unavailable bits bince we fill from the top left downward
+          #    2) all previous regions have been closed or joined so only this region can fail
+          #    3) this region must be good since there can never be only 1 region that is nuot
+          #       a multiple of five
+          # this rule only applies when filling normally, so we ignore the rule if we are "slotting"
+          # in pieces to see what configurations work for them (the only other time this algorithm is used).
+          return false if (collector[2] == 0b11111 && !slotting)
+          collector[0] = converter[collector[2]]
+          collector[2] = 0
+        end
+      end
+    end
+
+    # get rid of all the empty converters for the next round
+    collectors.compact!
+  end
+  return false if (collectors.length <= 1) # 1 collector or less and the region is fine
+  collectors.any? { | collector | (collector[1] % 5) != 0 } # more than 1 and we test them all for bad size
+end
+
+# creates a region given a row mask.  see prunable for what a "region" is
+def create_regions( value )
+  regions = []
+  cur_region = 0
+  5.times do | bit |
+    if (value[bit] == 0) then
+      cur_region |= 1 << bit
+    else
+      if (cur_region != 0 ) then
+        regions.push( cur_region)
+        cur_region = 0;
+      end
+    end
+  end
+  regions.push(cur_region) if (cur_region != 0)
+  regions
+end
+
+# find up to the counted number of solutions (or all solutions) and prints the final result
+def find_all
+  find_top( 1)
+  find_top( 0)
+  print_results
+end
+
+# show the board
+def print_results
+  print "#{@boards_found} solutions found\n\n"
+  print_full_board( @min_board)
+  print "\n"
+  print_full_board( @max_board)
+  print "\n"
+end
+
+# finds solutions.  This special version of the main function is only used for the top level
+# the reason for it is basically to force a particular ordering on how the rotations are tested for
+# the first piece.  It is called twice, first looking for placements of the odd rotations and then
+# looking for placements of the even locations.
+#
+# WHY?
+#   Since any found solution has an inverse we want to maximize finding solutions that are not already found
+#   as an inverse.  The inverse will ALWAYS be 3 one of the piece configurations that is exactly 3 rotations away
+#   (an odd number).  Checking even vs odd then produces a higher probability of finding more pieces earlier
+#   in the cycle.  We still need to keep checking all the permutations, but our probability of finding one will
+#   diminsh over time.  Since we are TOLD how many to search for this lets us exit before checking all pieces
+#   this bennifit is very great when seeking small numbers of solutions and is 0 when looking for more than the
+#   maximum number
+def find_top( rotation_skip)
+  board = blank_board
+  (@pieces.length-1).times do
+    piece = @pieces.shift
+    piece.masks[0].each do | mask, imask, cmask |
+      if ((rotation_skip += 1) % 2 == 0) then
+        piece.placed = mask
+        find( 1, 1, board | mask)
+      end
+    end
+    @pieces.push(piece)
+  end
+  piece = @pieces.shift
+  @pieces.push(piece)
+end
+
+# the normail find routine, iterates through the available pieces, checks all rotations at the current location
+# and adds any boards found.  depth is achieved via recursion.  the overall approach is described
+# here: http://www-128.ibm.com/developerworks/java/library/j-javaopt/
+# parameters:
+#  start_location -- where to start looking for place for the next piece at
+#  placed -- number of pieces placed
+#  board -- current state of the board
+#
+# see in-code comments
+def find( start_location, placed, board)
+  # find the next location to place a piece by looking for an empty bit
+  while board[start_location] == 1
+    start_location += 1
+  end
+
+  @pieces.length.times do
+    piece = @pieces.shift
+    piece.masks[start_location].each do | mask, imask, cmask |
+      if ( board & cmask == imask) then
+        piece.placed = mask
+        if (placed == 9) then
+          add_board
+        else
+          find( start_location + 1, placed + 1, board | mask)
+        end
+      end
+    end
+    @pieces.push(piece)
+  end
+end
+
+# print the board
+def print_full_board( board_string)
+  10.times do | row |
+    print " " if (row % 2 == 1)
+    5.times do | col |
+      print "#{board_string[row*5 + col,1]} "
+    end
+    print "\n"
+  end
+end
+
+# when a board is found we "draw it" into a string and then flip that string, adding both to
+# the list (hash) of solutions if they are unique.
+def add_board
+  board_string = "99999999999999999999999999999999999999999999999999"
+  @all_pieces.each {  | piece | piece.fill_string( board_string ) }
+  save( board_string)
+  save( board_string.reverse)
+end
+
+# adds a board string to the list (if new) and updates the current best/worst board
+def save( board_string)
+  if (@all_boards[board_string] == nil) then
+    @min_board = board_string if (board_string < @min_board)
+    @max_board = board_string if (board_string > @max_board)
+    @all_boards.store(board_string,true)
+    @boards_found += 1
+
+    # the exit motif is a time saver.  Ideally the function should return, but those tests
+    # take noticeable time (performance).
+    if (@boards_found == @stop_count) then
+      print_results
+      exit(0)
+    end
+  end
+end
+
+
+##
+## MAIN BODY :)
+##
+create_collector_support
+@pieces = [
+  Piece.new( [ :nw, :ne, :east, :east ], 2),
+  Piece.new( [ :ne, :se, :east, :ne ], 7),
+  Piece.new( [ :ne, :east, :ne, :nw ], 1),
+  Piece.new( [ :east, :sw, :sw, :se ], 6),
+  Piece.new( [ :east, :ne, :se, :ne ], 5),
+  Piece.new( [ :east, :east, :east, :se ], 0),
+  Piece.new( [ :ne, :nw, :se, :east, :se ], 4),
+  Piece.new( [ :se, :se, :se, :west ], 9),
+  Piece.new( [ :se, :se, :east, :se ], 8),
+  Piece.new( [ :east, :east, :sw, :se ], 3)
+  ];
+
+@all_pieces = Array.new( @pieces)
+
+@min_board = "99999999999999999999999999999999999999999999999999"
+@max_board = "00000000000000000000000000000000000000000000000000"
+@stop_count = ARGV[0].to_i || 2089
+@all_boards = {}
+@boards_found = 0
+
+find_all ######## DO IT!!!
diff --git a/benchmark/bm_so_nbody.rb b/benchmark/so_nbody.rb
index d6c5bb9e61..d6c5bb9e61 100644
--- a/benchmark/bm_so_nbody.rb
+++ b/benchmark/so_nbody.rb
diff --git a/benchmark/so_nested_loop.rb b/benchmark/so_nested_loop.rb
new file mode 100644
index 0000000000..766fcf7b84
--- /dev/null
+++ b/benchmark/so_nested_loop.rb
@@ -0,0 +1,24 @@
+#!/usr/bin/ruby
+# -*- Ruby -*-
+# $Id: nestedloop-ruby.code,v 1.4 2004/11/13 07:42:22 bfulgham Exp $
+# http://www.bagley.org/~doug/shootout/
+# from Avi Bryant
+
+n = 16 # Integer(ARGV.shift || 1)
+x = 0
+n.times do
+    n.times do
+        n.times do
+            n.times do
+                n.times do
+                    n.times do
+                        x += 1
+                    end
+                end
+            end
+        end
+    end
+end
+# puts x
+
+
diff --git a/benchmark/bm_so_nsieve.rb b/benchmark/so_nsieve.rb
index a65cc78233..a65cc78233 100644
--- a/benchmark/bm_so_nsieve.rb
+++ b/benchmark/so_nsieve.rb
diff --git a/benchmark/so_nsieve_bits.rb b/benchmark/so_nsieve_bits.rb
new file mode 100644
index 0000000000..6f958ee44e
--- /dev/null
+++ b/benchmark/so_nsieve_bits.rb
@@ -0,0 +1,43 @@
+#!/usr/bin/ruby
+#coding: us-ascii
+#
+# The Great Computer Language Shootout
+# http://shootout.alioth.debian.org/
+#
+# nsieve-bits in Ruby
+# Contributed by Glenn Parker, March 2005
+
+CharExponent = 3
+BitsPerChar = 1 << CharExponent
+LowMask = BitsPerChar - 1
+
+def sieve(m)
+  items = "\xFF" * ((m / BitsPerChar) + 1)
+  masks = ""
+  BitsPerChar.times do |b|
+    masks << (1 << b).chr
+  end
+
+  count = 0
+  pmax = m - 1
+  2.step(pmax, 1) do |p|
+    if items[p >> CharExponent][p & LowMask] == 1
+      count += 1
+      p.step(pmax, p) do |mult|
+	a = mult >> CharExponent
+	b = mult & LowMask
+	items[a] -= masks[b] if items[a][b] != 0
+      end
+    end
+  end
+  count
+end
+
+n = 9 # (ARGV[0] || 2).to_i
+n.step(n - 2, -1) do |exponent|
+  break if exponent < 0
+  m = 2 ** exponent * 10_000
+  count = sieve(m)
+  printf "Primes up to %8d %8d\n", m, count
+end
+
diff --git a/benchmark/so_object.rb b/benchmark/so_object.rb
new file mode 100644
index 0000000000..131f44624c
--- /dev/null
+++ b/benchmark/so_object.rb
@@ -0,0 +1,56 @@
+#!/usr/bin/ruby
+# -*- Ruby -*-
+# $Id: objinst-ruby.code,v 1.4 2004/11/13 07:42:25 bfulgham Exp $
+# http://www.bagley.org/~doug/shootout/
+# with help from Aristarkh Zagorodnikov
+
+class Toggle
+    def initialize(start_state)
+        @bool = start_state
+    end
+
+    def value
+        @bool
+    end
+
+    def activate
+        @bool = !@bool
+        self
+    end
+end
+
+class NthToggle < Toggle
+    def initialize(start_state, max_counter)
+        super start_state
+        @count_max = max_counter
+        @counter = 0
+    end
+
+    def activate
+        @counter += 1
+        if @counter >= @count_max
+            @bool = !@bool
+            @counter = 0
+        end
+        self
+    end
+end
+
+n = 1500000 # (ARGV.shift || 1).to_i
+
+toggle = Toggle.new 1
+5.times do
+    toggle.activate.value ? 'true' : 'false'
+end
+n.times do
+    toggle = Toggle.new 1
+end
+
+ntoggle = NthToggle.new 1, 3
+8.times do
+    ntoggle.activate.value ? 'true' : 'false'
+end
+n.times do
+    ntoggle = NthToggle.new 1, 3
+end
+
diff --git a/benchmark/bm_so_partial_sums.rb b/benchmark/so_partial_sums.rb
index 630b45cb8d..630b45cb8d 100644
--- a/benchmark/bm_so_partial_sums.rb
+++ b/benchmark/so_partial_sums.rb
diff --git a/benchmark/so_pidigits.rb b/benchmark/so_pidigits.rb
new file mode 100644
index 0000000000..9a537b2d1c
--- /dev/null
+++ b/benchmark/so_pidigits.rb
@@ -0,0 +1,92 @@
+# The Great Computer Language Shootout
+# http://shootout.alioth.debian.org/
+#
+# contributed by Gabriele Renzi
+
+class PiDigitSpigot
+
+    def initialize()
+        @z = Transformation.new 1,0,0,1
+        @x = Transformation.new 0,0,0,0
+        @inverse = Transformation.new 0,0,0,0
+    end
+
+    def next!
+        @y = @z.extract(3)
+        if safe? @y
+            @z = produce(@y)
+            @y
+        else
+            @z = consume @x.next!()
+            next!()
+        end
+    end
+
+    def safe?(digit)
+        digit == @z.extract(4)
+    end
+
+    def produce(i)
+        @inverse.qrst(10,-10*i,0,1).compose(@z)
+    end
+
+    def consume(a)
+        @z.compose(a)
+    end
+end
+
+
+class Transformation
+    attr_reader :q, :r, :s, :t
+    def initialize(q, r, s, t)
+        @q,@r,@s,@t,@k = q,r,s,t,0
+    end
+
+    def next!()
+        @q = @k = @k + 1
+        @r = 4 * @k + 2
+        @s = 0
+        @t = 2 * @k + 1
+        self
+    end
+
+    def extract(j)
+        (@q * j + @r) / (@s * j + @t)
+    end
+
+    def compose(a)
+        self.class.new( @q * a.q,
+                        @q * a.r + r * a.t,
+                        @s * a.q + t * a.s,
+                        @s * a.r + t * a.t
+                    )
+    end
+
+    def qrst *args
+        initialize *args
+        self
+    end
+
+
+end
+
+
+WIDTH = 10
+n = 2_500 # Integer(ARGV[0])
+j = 0
+
+digits = PiDigitSpigot.new
+
+while n > 0
+    if n >= WIDTH
+        WIDTH.times {print digits.next!}
+        j += WIDTH
+    else
+        n.times {print digits.next!}
+        (WIDTH-n).times {print " "}
+        j += n
+    end
+    puts "\t:"+j.to_s
+    n -= WIDTH
+end
+
diff --git a/benchmark/so_random.rb b/benchmark/so_random.rb
new file mode 100644
index 0000000000..a66b9e8e63
--- /dev/null
+++ b/benchmark/so_random.rb
@@ -0,0 +1,20 @@
+# from http://www.bagley.org/~doug/shootout/bench/random/random.ruby
+
+IM = 139968.0
+IA = 3877.0
+IC = 29573.0
+
+$last = 42.0
+
+def gen_random(max)
+  (max * ($last = ($last * IA + IC) % IM)) / IM
+end
+
+N = 3_000_000
+
+i = 0
+while i<N
+  i +=1
+  gen_random(100.0)
+end
+# "%.9f" % gen_random(100.0)
diff --git a/benchmark/so_reverse_complement.yml b/benchmark/so_reverse_complement.yml
new file mode 100644
index 0000000000..de05eedfc4
--- /dev/null
+++ b/benchmark/so_reverse_complement.yml
@@ -0,0 +1,137 @@
+prelude: |
+  bm_so_fasta = <<'EOS'
+  # The Computer Language Shootout
+  # http://shootout.alioth.debian.org/
+  # Contributed by Sokolov Yura
+
+  $last = 42.0
+  def gen_random(max, im=139968, ia=3877, ic=29573)
+      (max * ($last = ($last * ia + ic) % im)) / im
+  end
+
+  alu =
+     "GGCCGGGCGCGGTGGCTCACGCCTGTAATCCCAGCACTTTGG"+
+     "GAGGCCGAGGCGGGCGGATCACCTGAGGTCAGGAGTTCGAGA"+
+     "CCAGCCTGGCCAACATGGTGAAACCCCGTCTCTACTAAAAAT"+
+     "ACAAAAATTAGCCGGGCGTGGTGGCGCGCGCCTGTAATCCCA"+
+     "GCTACTCGGGAGGCTGAGGCAGGAGAATCGCTTGAACCCGGG"+
+     "AGGCGGAGGTTGCAGTGAGCCGAGATCGCGCCACTGCACTCC"+
+     "AGCCTGGGCGACAGAGCGAGACTCCGTCTCAAAAA"
+
+  iub = [
+      ["a", 0.27],
+      ["c", 0.12],
+      ["g", 0.12],
+      ["t", 0.27],
+
+      ["B", 0.02],
+      ["D", 0.02],
+      ["H", 0.02],
+      ["K", 0.02],
+      ["M", 0.02],
+      ["N", 0.02],
+      ["R", 0.02],
+      ["S", 0.02],
+      ["V", 0.02],
+      ["W", 0.02],
+      ["Y", 0.02],
+  ]
+  homosapiens = [
+      ["a", 0.3029549426680],
+      ["c", 0.1979883004921],
+      ["g", 0.1975473066391],
+      ["t", 0.3015094502008],
+  ]
+
+  def make_repeat_fasta(id, desc, src, n)
+      puts ">#{id} #{desc}"
+      v = nil
+      width = 60
+      l = src.length
+      s = src * ((n / l) + 1)
+      s.slice!(n, l)
+      puts(s.scan(/.{1,#{width}}/).join("\n"))
+  end
+
+  def make_random_fasta(id, desc, table, n)
+      puts ">#{id} #{desc}"
+      rand, v = nil,nil
+      width = 60
+      chunk = 1 * width
+      prob = 0.0
+      table.each{|v| v[1]= (prob += v[1])}
+      for i in 1..(n/width)
+          puts((1..width).collect{
+              rand = gen_random(1.0)
+              table.find{|v| v[1]>rand}[0]
+          }.join)
+      end
+      if n%width != 0
+          puts((1..(n%width)).collect{
+              rand = gen_random(1.0)
+              table.find{|v| v[1]>rand}[0]
+          }.join)
+      end
+  end
+
+
+  n = (ARGV[0] or 250_000).to_i
+
+  make_repeat_fasta('ONE', 'Homo sapiens alu', alu, n*2)
+  make_random_fasta('TWO', 'IUB ambiguity codes', iub, n*3)
+  make_random_fasta('THREE', 'Homo sapiens frequency', homosapiens, n*5)
+  EOS
+benchmark:
+  - name: so_reverse_complement
+    prelude: |
+      script = File.join(File.dirname($0), 'bm_so_fasta.rb')
+      File.write(script, bm_so_fasta)
+
+      def prepare_fasta_output n
+        filebase = File.join(File.dirname($0), 'fasta.output')
+        script = File.join(File.dirname($0), 'bm_so_fasta.rb')
+        file = "#{filebase}.#{n}"
+
+        unless FileTest.exist?(file)
+          STDERR.puts "preparing #{file}"
+
+          open(file, 'w'){|f|
+            ARGV[0] = n
+            $stdout = f
+            load script
+            $stdout = STDOUT
+          }
+        end
+      end
+      prepare_fasta_output(2_500_000)
+    script: |
+      # The Great Computer Language Shootout
+      # http://shootout.alioth.debian.org/
+      #
+      # Contributed by Peter Bjarke Olsen
+      # Modified by Doug King
+
+      seq=Array.new
+
+      def revcomp(seq)
+        seq.reverse!.tr!('wsatugcyrkmbdhvnATUGCYRKMBDHVN','WSTAACGRYMKVHDBNTAACGRYMKVHDBN')
+        stringlen=seq.length
+        0.step(stringlen-1,60) {|x| print seq.slice(x,60) , "\n"}
+      end
+
+      input = open(File.join(File.dirname($0), 'fasta.output.2500000'), 'rb')
+
+      while input.gets
+        if $_ =~ />/
+          if seq.length != 0
+            revcomp(seq.join)
+            seq=Array.new
+          end
+          puts $_
+        else
+          $_.sub(/\n/,'')
+          seq.push $_
+        end
+      end
+      revcomp(seq.join)
+    loop_count: 1
diff --git a/benchmark/so_sieve.rb b/benchmark/so_sieve.rb
new file mode 100644
index 0000000000..43dc302648
--- /dev/null
+++ b/benchmark/so_sieve.rb
@@ -0,0 +1,24 @@
+# from http://www.bagley.org/~doug/shootout/bench/sieve/sieve.ruby
+num = 500
+count = i = j = 0
+flags0 = Array.new(8192,1)
+k = 0
+while k < num
+  k += 1
+  count = 0
+  flags = flags0.dup
+  i = 2
+  while i<8192
+    i += 1
+    if flags[i]
+      # remove all multiples of prime: i
+      j = i*i
+      while j < 8192
+        j += i
+        flags[j] = nil
+      end
+      count += 1
+    end
+  end
+end
+count
diff --git a/benchmark/bm_so_spectralnorm.rb b/benchmark/so_spectralnorm.rb
index 6b97206689..6b97206689 100644
--- a/benchmark/bm_so_spectralnorm.rb
+++ b/benchmark/so_spectralnorm.rb
diff --git a/benchmark/string_capitalize.yml b/benchmark/string_capitalize.yml
new file mode 100644
index 0000000000..7d23fd3d35
--- /dev/null
+++ b/benchmark/string_capitalize.yml
@@ -0,0 +1,10 @@
+prelude: |
+  str1 = [*"a".."m",*"N".."Z",*"0".."9"].join("")
+  str10 = str1 * 10
+  str100 = str10 * 10
+  str1000 = str100 * 10
+benchmark:
+  capitalize-1: str1.capitalize
+  capitalize-10: str10.capitalize
+  capitalize-100: str100.capitalize
+  capitalize-1000: str1000.capitalize
diff --git a/benchmark/string_casecmp.yml b/benchmark/string_casecmp.yml
new file mode 100644
index 0000000000..2354040a04
--- /dev/null
+++ b/benchmark/string_casecmp.yml
@@ -0,0 +1,26 @@
+prelude: |
+  lstr1 = [*"a".."z",*"0".."9"].join("")
+  lstr10 = lstr1 * 10
+  lstr100 = lstr10 * 10
+  lstr1000 = lstr100 * 10
+  lnonascii1 = [*"\u{e0}".."\u{ff}"].join("")
+  lnonascii10 = lnonascii1 * 10
+  lnonascii100 = lnonascii10 * 10
+  lnonascii1000 = lnonascii100 * 10
+  ustr1 = [*"A".."Z",*"0".."9"].join("")
+  ustr10 = ustr1 * 10
+  ustr100 = ustr10 * 10
+  ustr1000 = ustr100 * 10
+  unonascii1 = [*"\u{c0}".."\u{df}"].join("")
+  unonascii10 = unonascii1 * 10
+  unonascii100 = unonascii10 * 10
+  unonascii1000 = unonascii100 * 10
+benchmark:
+  casecmp-1: lstr1.casecmp(ustr1)
+  casecmp-10: lstr10.casecmp(ustr10)
+  casecmp-100: lstr100.casecmp(ustr100)
+  casecmp-1000: lstr1000.casecmp(ustr1000)
+  casecmp-nonascii1: lnonascii1.casecmp(unonascii1)
+  casecmp-nonascii10: lnonascii10.casecmp(unonascii10)
+  casecmp-nonascii100: lnonascii100.casecmp(unonascii100)
+  casecmp-nonascii1000: lnonascii1000.casecmp(unonascii1000)
diff --git a/benchmark/string_casecmp_p.yml b/benchmark/string_casecmp_p.yml
new file mode 100644
index 0000000000..a790ce7d55
--- /dev/null
+++ b/benchmark/string_casecmp_p.yml
@@ -0,0 +1,26 @@
+prelude: |
+  lstr1 = [*"a".."z",*"0".."9"].join("")
+  lstr10 = lstr1 * 10
+  lstr100 = lstr10 * 10
+  lstr1000 = lstr100 * 10
+  lnonascii1 = [*"\u{e0}".."\u{ff}"].join("")
+  lnonascii10 = lnonascii1 * 10
+  lnonascii100 = lnonascii10 * 10
+  lnonascii1000 = lnonascii100 * 10
+  ustr1 = [*"A".."Z",*"0".."9"].join("")
+  ustr10 = ustr1 * 10
+  ustr100 = ustr10 * 10
+  ustr1000 = ustr100 * 10
+  unonascii1 = [*"\u{c0}".."\u{df}"].join("")
+  unonascii10 = unonascii1 * 10
+  unonascii100 = unonascii10 * 10
+  unonascii1000 = unonascii100 * 10
+benchmark:
+  casecmp_p-1: lstr1.casecmp?(ustr1)
+  casecmp_p-10: lstr10.casecmp?(ustr10)
+  casecmp_p-100: lstr100.casecmp?(ustr100)
+  casecmp_p-1000: lstr1000.casecmp?(ustr1000)
+  casecmp_p-nonascii1: lnonascii1.casecmp?(unonascii1)
+  casecmp_p-nonascii10: lnonascii10.casecmp?(unonascii10)
+  casecmp_p-nonascii100: lnonascii100.casecmp?(unonascii100)
+  casecmp_p-nonascii1000: lnonascii1000.casecmp?(unonascii1000)
diff --git a/benchmark/string_downcase.yml b/benchmark/string_downcase.yml
new file mode 100644
index 0000000000..1fea6afbec
--- /dev/null
+++ b/benchmark/string_downcase.yml
@@ -0,0 +1,18 @@
+prelude: |
+  str1 = [*"A".."Z",*"0".."9"].join("")
+  str10 = str1 * 10
+  str100 = str10 * 10
+  str1000 = str100 * 10
+  nonascii1 = [*"\u{c0}".."\u{df}"].join("")
+  nonascii10 = nonascii1 * 10
+  nonascii100 = nonascii10 * 10
+  nonascii1000 = nonascii100 * 10
+benchmark:
+  downcase-1: str1.upcase
+  downcase-10: str10.upcase
+  downcase-100: str100.upcase
+  downcase-1000: str1000.upcase
+  downcase-nonascii1: nonascii1.downcase
+  downcase-nonascii10: nonascii10.downcase
+  downcase-nonascii100: nonascii100.downcase
+  downcase-nonascii1000: nonascii1000.downcase
diff --git a/benchmark/string_index.rb b/benchmark/string_index.rb
new file mode 100644
index 0000000000..7783111082
--- /dev/null
+++ b/benchmark/string_index.rb
@@ -0,0 +1,3 @@
+str1 = "あ" * 1024 + "い" # not single byte optimizable
+str2 = "い"
+100_000.times { str1.index(str2) }
diff --git a/benchmark/string_scan_re.rb b/benchmark/string_scan_re.rb
new file mode 100644
index 0000000000..b0d60201a9
--- /dev/null
+++ b/benchmark/string_scan_re.rb
@@ -0,0 +1,2 @@
+str = Array.new(1_000, 'abc').join(',')
+1_000.times { str.scan(/abc/) }
diff --git a/benchmark/string_scan_str.rb b/benchmark/string_scan_str.rb
new file mode 100644
index 0000000000..42440bd948
--- /dev/null
+++ b/benchmark/string_scan_str.rb
@@ -0,0 +1,2 @@
+str = Array.new(1_000, 'abc').join(',')
+1_000.times { str.scan('abc') }
diff --git a/benchmark/string_slice.yml b/benchmark/string_slice.yml
new file mode 100644
index 0000000000..fc2393c5d1
--- /dev/null
+++ b/benchmark/string_slice.yml
@@ -0,0 +1,11 @@
+prelude: |
+  long_string = "x"*1000+"-hår"
+benchmark:
+  regexp-short: |
+    "x-hår".slice!(/-(.)(.)(.)/, 3)
+  regexp-long: |
+    long_string.dup.slice!(/-(.)(.)(.)/, 3)
+  string-short: |
+    "x-hår".slice!("r")
+  string-long: |
+    long_string.dup.slice!("r")
diff --git a/benchmark/string_split.yml b/benchmark/string_split.yml
new file mode 100644
index 0000000000..cc2c7d7855
--- /dev/null
+++ b/benchmark/string_split.yml
@@ -0,0 +1,22 @@
+prelude: |
+  str1 = [*0..5].join(" ") + " "
+  str10 = str1 * 10
+  str100 = str10 * 10
+  str1000 = str100 * 10
+benchmark:
+  to_chars-1: str1.split('')
+  to_chars-10: str10.split('')
+  to_chars-100: str100.split('')
+  to_chars-1000: str1000.split('')
+  to_words-1: str1.split(' ')
+  to_words-10: str10.split(' ')
+  to_words-100: str100.split(' ')
+  to_words-1000: str1000.split(' ')
+  re_chars-1: str1.split(//)
+  re_chars-10: str10.split(//)
+  re_chars-100: str100.split(//)
+  re_chars-1000: str1000.split(//)
+  re_space-1: str1.split(/ /)
+  re_space-10: str10.split(/ /)
+  re_space-100: str100.split(/ /)
+  re_space-1000: str1000.split(/ /)
diff --git a/benchmark/string_swapcase.yml b/benchmark/string_swapcase.yml
new file mode 100644
index 0000000000..eeb5928907
--- /dev/null
+++ b/benchmark/string_swapcase.yml
@@ -0,0 +1,18 @@
+prelude: |
+  str1 = [*"A".."M",*"n".."z",*"0".."9"].join("")
+  str10 = str1 * 10
+  str100 = str10 * 10
+  str1000 = str100 * 10
+  nonascii1 = [*"\u{c0}".."\u{cf}",*"\u{f0}".."\u{ff}"].join("")
+  nonascii10 = nonascii1 * 10
+  nonascii100 = nonascii10 * 10
+  nonascii1000 = nonascii100 * 10
+benchmark:
+  swapcase-1: str1.swapcase
+  swapcase-10: str10.swapcase
+  swapcase-100: str100.swapcase
+  swapcase-1000: str1000.swapcase
+  swapcase-nonascii1: nonascii1.swapcase
+  swapcase-nonascii10: nonascii10.swapcase
+  swapcase-nonascii100: nonascii100.swapcase
+  swapcase-nonascii1000: nonascii1000.swapcase
diff --git a/benchmark/string_upcase.yml b/benchmark/string_upcase.yml
new file mode 100644
index 0000000000..dab84bbde2
--- /dev/null
+++ b/benchmark/string_upcase.yml
@@ -0,0 +1,18 @@
+prelude: |
+  str1 = [*"a".."z",*"0".."9"].join("")
+  str10 = str1 * 10
+  str100 = str10 * 10
+  str1000 = str100 * 10
+  nonascii1 = [*"\u{e0}".."\u{ff}"].join("")
+  nonascii10 = nonascii1 * 10
+  nonascii100 = nonascii10 * 10
+  nonascii1000 = nonascii100 * 10
+benchmark:
+  upcase-1: str1.upcase
+  upcase-10: str10.upcase
+  upcase-100: str100.upcase
+  upcase-1000: str1000.upcase
+  upcase-nonascii1: nonascii1.upcase
+  upcase-nonascii10: nonascii10.upcase
+  upcase-nonascii100: nonascii100.upcase
+  upcase-nonascii1000: nonascii1000.upcase
diff --git a/benchmark/time_strptime.yml b/benchmark/time_strptime.yml
new file mode 100644
index 0000000000..8d89ebb7a7
--- /dev/null
+++ b/benchmark/time_strptime.yml
@@ -0,0 +1,13 @@
+prelude: |
+  require 'time'
+benchmark:
+  - Time.strptime("28/Aug/2005:06:54:20 +0000", "%d/%b/%Y:%T %z")
+  - Time.strptime("1", "%s")
+  - Time.strptime("0 +0100", "%s %z")
+  - Time.strptime("0 UTC", "%s %z")
+  - Time.strptime("1.5", "%s.%N")
+  - Time.strptime("1.000000000001", "%s.%N")
+  - Time.strptime("20010203 -0200", "%Y%m%d %z")
+  - Time.strptime("20010203 UTC", "%Y%m%d %z")
+  - Time.strptime("2018-365", "%Y-%j")
+  - Time.strptime("2018-091", "%Y-%j")
diff --git a/benchmark/time_subsec.rb b/benchmark/time_subsec.rb
new file mode 100644
index 0000000000..505021c701
--- /dev/null
+++ b/benchmark/time_subsec.rb
@@ -0,0 +1,2 @@
+t = Time.now
+4000000.times { t.subsec }
diff --git a/benchmark/vm_array.yml b/benchmark/vm_array.yml
new file mode 100644
index 0000000000..2a177237ef
--- /dev/null
+++ b/benchmark/vm_array.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_array: |
+    a = [1,2,3,4,5,6,7,8,9,10]
+loop_count: 6000000
diff --git a/benchmark/vm_attr_ivar.yml b/benchmark/vm_attr_ivar.yml
new file mode 100644
index 0000000000..75b803478e
--- /dev/null
+++ b/benchmark/vm_attr_ivar.yml
@@ -0,0 +1,14 @@
+prelude: |
+  class C
+    attr_reader :a, :b
+    def initialize
+      @a = nil
+      @b = nil
+    end
+  end
+  obj = C.new
+benchmark:
+  vm_attr_ivar: |
+    j = obj.a
+    k = obj.b
+loop_count: 30000000
diff --git a/benchmark/vm_attr_ivar_set.yml b/benchmark/vm_attr_ivar_set.yml
new file mode 100644
index 0000000000..a0d379b18a
--- /dev/null
+++ b/benchmark/vm_attr_ivar_set.yml
@@ -0,0 +1,14 @@
+prelude: |
+  class C
+    attr_accessor :a, :b
+    def initialize
+      @a = nil
+      @b = nil
+    end
+  end
+  obj = C.new
+benchmark:
+  vm_attr_ivar_set: |
+    obj.a = 1
+    obj.b = 2
+loop_count: 30000000
diff --git a/benchmark/vm_backtrace.rb b/benchmark/vm_backtrace.rb
new file mode 100644
index 0000000000..0fbf73e1ca
--- /dev/null
+++ b/benchmark/vm_backtrace.rb
@@ -0,0 +1,22 @@
+# get last backtrace
+
+begin
+  caller(0, 0)
+rescue ArgumentError
+  alias caller_orig caller
+  def caller lev, n
+    caller_orig(lev)[0..n]
+  end
+end
+
+def rec n
+  if n < 0
+    100_000.times{
+      caller(0, 1)
+    }
+  else
+    rec(n-1)
+  end
+end
+
+rec 50
diff --git a/benchmark/vm_bigarray.yml b/benchmark/vm_bigarray.yml
new file mode 100644
index 0000000000..8b2d3f3443
--- /dev/null
+++ b/benchmark/vm_bigarray.yml
@@ -0,0 +1,105 @@
+benchmark:
+  vm_bigarray: |
+    a = [
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+      1,2,3,4,5,6,7,8,9,10,
+    ]
+loop_count: 6000000
diff --git a/benchmark/vm_bighash.yml b/benchmark/vm_bighash.yml
new file mode 100644
index 0000000000..4dacfde793
--- /dev/null
+++ b/benchmark/vm_bighash.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_bighash: |
+    a = {0=>0, 1=>1, 2=>2, 3=>3, 4=>4, 5=>5, 6=>6, 7=>7, 8=>8, 9=>9, 10=>10, 11=>11, 12=>12, 13=>13, 14=>14, 15=>15, 16=>16, 17=>17, 18=>18, 19=>19, 20=>20, 21=>21, 22=>22, 23=>23, 24=>24, 25=>25, 26=>26, 27=>27, 28=>28, 29=>29, 30=>30, 31=>31, 32=>32, 33=>33, 34=>34, 35=>35, 36=>36, 37=>37, 38=>38, 39=>39, 40=>40, 41=>41, 42=>42, 43=>43, 44=>44, 45=>45, 46=>46, 47=>47, 48=>48, 49=>49, 50=>50, 51=>51, 52=>52, 53=>53, 54=>54, 55=>55, 56=>56, 57=>57, 58=>58, 59=>59, 60=>60, 61=>61, 62=>62, 63=>63, 64=>64, 65=>65, 66=>66, 67=>67, 68=>68, 69=>69, 70=>70, 71=>71, 72=>72, 73=>73, 74=>74, 75=>75, 76=>76, 77=>77, 78=>78, 79=>79, 80=>80, 81=>81, 82=>82, 83=>83, 84=>84, 85=>85, 86=>86, 87=>87, 88=>88, 89=>89, 90=>90, 91=>91, 92=>92, 93=>93, 94=>94, 95=>95, 96=>96, 97=>97, 98=>98, 99=>99, 100=>100, 101=>101, 102=>102, 103=>103, 104=>104, 105=>105, 106=>106, 107=>107, 108=>108, 109=>109, 110=>110, 111=>111, 112=>112, 113=>113, 114=>114, 115=>115, 116=>116, 117=>117, 118=>118, 119=>119, 120=>120, 121=>121, 122=>122, 123=>123, 124=>124, 125=>125, 126=>126, 127=>127, 128=>128, 129=>129, 130=>130, 131=>131, 132=>132, 133=>133, 134=>134, 135=>135, 136=>136, 137=>137, 138=>138, 139=>139, 140=>140, 141=>141, 142=>142, 143=>143, 144=>144, 145=>145, 146=>146, 147=>147, 148=>148, 149=>149, 150=>150, 151=>151, 152=>152, 153=>153, 154=>154, 155=>155, 156=>156, 157=>157, 158=>158, 159=>159, 160=>160, 161=>161, 162=>162, 163=>163, 164=>164, 165=>165, 166=>166, 167=>167, 168=>168, 169=>169, 170=>170, 171=>171, 172=>172, 173=>173, 174=>174, 175=>175, 176=>176, 177=>177, 178=>178, 179=>179, 180=>180, 181=>181, 182=>182, 183=>183, 184=>184, 185=>185, 186=>186, 187=>187, 188=>188, 189=>189, 190=>190, 191=>191, 192=>192, 193=>193, 194=>194, 195=>195, 196=>196, 197=>197, 198=>198, 199=>199, 200=>200, 201=>201, 202=>202, 203=>203, 204=>204, 205=>205, 206=>206, 207=>207, 208=>208, 209=>209, 210=>210, 211=>211, 212=>212, 213=>213, 214=>214, 215=>215, 216=>216, 217=>217, 218=>218, 219=>219, 220=>220, 221=>221, 222=>222, 223=>223, 224=>224, 225=>225, 226=>226, 227=>227, 228=>228, 229=>229, 230=>230, 231=>231, 232=>232, 233=>233, 234=>234, 235=>235, 236=>236, 237=>237, 238=>238, 239=>239, 240=>240, 241=>241, 242=>242, 243=>243, 244=>244, 245=>245, 246=>246, 247=>247, 248=>248, 249=>249, 250=>250, 251=>251, 252=>252, 253=>253, 254=>254, 255=>255, 256=>256, 257=>257, 258=>258, 259=>259, 260=>260, 261=>261, 262=>262, 263=>263, 264=>264, 265=>265, 266=>266, 267=>267, 268=>268, 269=>269, 270=>270, 271=>271, 272=>272, 273=>273, 274=>274, 275=>275, 276=>276, 277=>277, 278=>278, 279=>279, 280=>280, 281=>281, 282=>282, 283=>283, 284=>284, 285=>285, 286=>286, 287=>287, 288=>288, 289=>289, 290=>290, 291=>291, 292=>292, 293=>293, 294=>294, 295=>295, 296=>296, 297=>297, 298=>298, 299=>299, 300=>300, 301=>301, 302=>302, 303=>303, 304=>304, 305=>305, 306=>306, 307=>307, 308=>308, 309=>309, 310=>310, 311=>311, 312=>312, 313=>313, 314=>314, 315=>315, 316=>316, 317=>317, 318=>318, 319=>319, 320=>320, 321=>321, 322=>322, 323=>323, 324=>324, 325=>325, 326=>326, 327=>327, 328=>328, 329=>329, 330=>330, 331=>331, 332=>332, 333=>333, 334=>334, 335=>335, 336=>336, 337=>337, 338=>338, 339=>339, 340=>340, 341=>341, 342=>342, 343=>343, 344=>344, 345=>345, 346=>346, 347=>347, 348=>348, 349=>349, 350=>350, 351=>351, 352=>352, 353=>353, 354=>354, 355=>355, 356=>356, 357=>357, 358=>358, 359=>359, 360=>360, 361=>361, 362=>362, 363=>363, 364=>364, 365=>365, 366=>366, 367=>367, 368=>368, 369=>369, 370=>370, 371=>371, 372=>372, 373=>373, 374=>374, 375=>375, 376=>376, 377=>377, 378=>378, 379=>379, 380=>380, 381=>381, 382=>382, 383=>383, 384=>384, 385=>385, 386=>386, 387=>387, 388=>388, 389=>389, 390=>390, 391=>391, 392=>392, 393=>393, 394=>394, 395=>395, 396=>396, 397=>397, 398=>398, 399=>399, 400=>400, 401=>401, 402=>402, 403=>403, 404=>404, 405=>405, 406=>406, 407=>407, 408=>408, 409=>409, 410=>410, 411=>411, 412=>412, 413=>413, 414=>414, 415=>415, 416=>416, 417=>417, 418=>418, 419=>419, 420=>420, 421=>421, 422=>422, 423=>423, 424=>424, 425=>425, 426=>426, 427=>427, 428=>428, 429=>429, 430=>430, 431=>431, 432=>432, 433=>433, 434=>434, 435=>435, 436=>436, 437=>437, 438=>438, 439=>439, 440=>440, 441=>441, 442=>442, 443=>443, 444=>444, 445=>445, 446=>446, 447=>447, 448=>448, 449=>449, 450=>450, 451=>451, 452=>452, 453=>453, 454=>454, 455=>455, 456=>456, 457=>457, 458=>458, 459=>459, 460=>460, 461=>461, 462=>462, 463=>463, 464=>464, 465=>465, 466=>466, 467=>467, 468=>468, 469=>469, 470=>470, 471=>471, 472=>472, 473=>473, 474=>474, 475=>475, 476=>476, 477=>477, 478=>478, 479=>479, 480=>480, 481=>481, 482=>482, 483=>483, 484=>484, 485=>485, 486=>486, 487=>487, 488=>488, 489=>489, 490=>490, 491=>491, 492=>492, 493=>493, 494=>494, 495=>495, 496=>496, 497=>497, 498=>498, 499=>499, 500=>500,}
+loop_count: 60000
diff --git a/benchmark/vm_block.yml b/benchmark/vm_block.yml
new file mode 100644
index 0000000000..68b3e40bf5
--- /dev/null
+++ b/benchmark/vm_block.yml
@@ -0,0 +1,9 @@
+prelude: |
+  def m
+    yield
+  end
+benchmark:
+  vm_block: |
+    m{
+    }
+loop_count: 30000000
diff --git a/benchmark/vm_block_handler.yml b/benchmark/vm_block_handler.yml
new file mode 100644
index 0000000000..461d7953ad
--- /dev/null
+++ b/benchmark/vm_block_handler.yml
@@ -0,0 +1,27 @@
+# :FIXME: is there a way to benchmark block_handler_type_ifunc?
+
+prelude: |
+  p = proc{_1}
+  o = Object.new
+  def o.each
+    i = 0
+    while i < 3_000_000 do
+      yield i
+      i += 1
+    end
+  end
+
+benchmark:
+  - name: block_handler_type_iseq
+    script: |
+      o.each{_1}
+
+  - name: block_handler_type_symbol
+    script: |
+      o.each(&:itself)
+
+  - name: block_handler_type_proc
+    script: |
+      o.each(&p)
+
+loop_count: 1
diff --git a/benchmark/vm_blockparam.yml b/benchmark/vm_blockparam.yml
new file mode 100644
index 0000000000..5e5a0170a2
--- /dev/null
+++ b/benchmark/vm_blockparam.yml
@@ -0,0 +1,7 @@
+prelude: |
+  def m &b
+  end
+benchmark:
+  vm_blockparam: |
+    m{}
+loop_count: 30000000
diff --git a/benchmark/vm_blockparam_call.yml b/benchmark/vm_blockparam_call.yml
new file mode 100644
index 0000000000..a7d8d366ea
--- /dev/null
+++ b/benchmark/vm_blockparam_call.yml
@@ -0,0 +1,8 @@
+prelude: |
+  def m &b
+    b.call
+  end
+benchmark:
+  vm_blockparam_call: |
+    m{}
+loop_count: 30000000
diff --git a/benchmark/vm_blockparam_pass.yml b/benchmark/vm_blockparam_pass.yml
new file mode 100644
index 0000000000..841f5e7a63
--- /dev/null
+++ b/benchmark/vm_blockparam_pass.yml
@@ -0,0 +1,12 @@
+prelude: |
+  def bp_yield
+    yield
+  end
+
+  def bp_pass &b
+    bp_yield &b
+  end
+benchmark:
+  vm_blockparam_pass: |
+    bp_pass{}
+loop_count: 30000000
diff --git a/benchmark/vm_blockparam_yield.yml b/benchmark/vm_blockparam_yield.yml
new file mode 100644
index 0000000000..8ea9b46ed2
--- /dev/null
+++ b/benchmark/vm_blockparam_yield.yml
@@ -0,0 +1,8 @@
+prelude: |
+  def bp_yield &b
+    yield
+  end
+benchmark:
+  vm_blockparam_yield: |
+    bp_yield{}
+loop_count: 30000000
diff --git a/benchmark/vm_case.yml b/benchmark/vm_case.yml
new file mode 100644
index 0000000000..b26a491a15
--- /dev/null
+++ b/benchmark/vm_case.yml
@@ -0,0 +1,13 @@
+benchmark:
+  vm_case: |
+    case :foo
+    when :bar
+      raise
+    when :baz
+      raise
+    when :boo
+      raise
+    when :foo
+      # noop
+    end
+loop_count: 6000000
diff --git a/benchmark/vm_case_lit.yml b/benchmark/vm_case_lit.yml
new file mode 100644
index 0000000000..9f91801544
--- /dev/null
+++ b/benchmark/vm_case_lit.yml
@@ -0,0 +1,23 @@
+# loop_count is not utilized since `i` is involved in the script
+benchmark:
+  vm_case_lit: |
+    i = 0
+    @ret = [ "foo", true, false, :sym, 6, nil, 0.1, 0xffffffffffffffff ]
+    def foo(i)
+      @ret[i % @ret.size]
+    end
+
+    while i<6_000_000
+      case foo(i)
+      when "foo" then :foo
+      when true then true
+      when false then false
+      when :sym then :sym
+      when 6 then :fix
+      when nil then nil
+      when 0.1 then :float
+      when 0xffffffffffffffff then :big
+      end
+      i += 1
+    end
+loop_count: 1
diff --git a/benchmark/vm_clearmethodcache.rb b/benchmark/vm_clearmethodcache.rb
new file mode 100644
index 0000000000..9661323cd2
--- /dev/null
+++ b/benchmark/vm_clearmethodcache.rb
@@ -0,0 +1,8 @@
+i = 0
+while i<200_000
+  i += 1
+
+  Class.new{
+    def m; end
+  }
+end
diff --git a/benchmark/vm_const.yml b/benchmark/vm_const.yml
new file mode 100644
index 0000000000..6064d4eed0
--- /dev/null
+++ b/benchmark/vm_const.yml
@@ -0,0 +1,7 @@
+prelude: |
+  Const = 1
+benchmark:
+  vm_const: |
+    j = Const
+    k = Const
+loop_count: 30000000
diff --git a/benchmark/vm_defined_method.yml b/benchmark/vm_defined_method.yml
new file mode 100644
index 0000000000..347e0cfd33
--- /dev/null
+++ b/benchmark/vm_defined_method.yml
@@ -0,0 +1,8 @@
+prelude: |
+  class Object
+    define_method(:m){}
+  end
+benchmark:
+  vm_defined_method: |
+    m; m; m; m; m; m; m; m;
+loop_count: 6000000
diff --git a/benchmark/vm_dstr.yml b/benchmark/vm_dstr.yml
new file mode 100644
index 0000000000..30c7a3193c
--- /dev/null
+++ b/benchmark/vm_dstr.yml
@@ -0,0 +1,6 @@
+prelude: |
+  x = y = 'z'
+benchmark:
+  vm_dstr: |
+    str = "foo#{x}bar#{y}baz"
+loop_count: 6000000
diff --git a/benchmark/vm_ensure.yml b/benchmark/vm_ensure.yml
new file mode 100644
index 0000000000..4ea62f30de
--- /dev/null
+++ b/benchmark/vm_ensure.yml
@@ -0,0 +1,14 @@
+# Not utilizing loop_count since using it for this is too unstable for now
+benchmark:
+  vm_ensure: |
+    i = 0
+    while i<30_000_000
+      i += 1
+      begin
+        begin
+        ensure
+        end
+      ensure
+      end
+    end
+loop_count: 1
diff --git a/benchmark/vm_eval.yml b/benchmark/vm_eval.yml
new file mode 100644
index 0000000000..7ba1a8d1de
--- /dev/null
+++ b/benchmark/vm_eval.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_eval: |
+    eval("1")
+loop_count: 6000000
diff --git a/benchmark/vm_fiber_allocate.yml b/benchmark/vm_fiber_allocate.yml
new file mode 100644
index 0000000000..b5a54e1ddf
--- /dev/null
+++ b/benchmark/vm_fiber_allocate.yml
@@ -0,0 +1,8 @@
+prelude: |
+  # Disable GC to see raw throughput:
+  GC.disable
+benchmark:
+  vm_fiber_allocate: |
+    fiber = Fiber.new{Fiber.yield}
+    fiber.resume
+loop_count: 100000
diff --git a/benchmark/vm_fiber_count.yml b/benchmark/vm_fiber_count.yml
new file mode 100644
index 0000000000..b83d3152d4
--- /dev/null
+++ b/benchmark/vm_fiber_count.yml
@@ -0,0 +1,10 @@
+# On Linux, you will need to increase the maximum number of memory maps:
+# sudo sysctl -w vm.max_map_count=200000
+prelude: |
+  fibers = []
+benchmark:
+  vm_fiber_count: |
+    fiber = Fiber.new{Fiber.yield}
+    fibers << fiber
+    fiber.resume
+loop_count: 100000
diff --git a/benchmark/vm_fiber_reuse.yml b/benchmark/vm_fiber_reuse.yml
new file mode 100644
index 0000000000..4ca41085b1
--- /dev/null
+++ b/benchmark/vm_fiber_reuse.yml
@@ -0,0 +1,14 @@
+prelude: |
+  GC.disable
+  fibers = []
+benchmark:
+  vm_fiber_reuse: |
+    1024.times do
+      fiber = Fiber.new{Fiber.yield}
+      fibers << fiber
+      fiber.resume
+    end
+
+    fibers.clear
+    GC.start
+loop_count: 200
diff --git a/benchmark/vm_fiber_reuse_gc.yml b/benchmark/vm_fiber_reuse_gc.yml
new file mode 100644
index 0000000000..892622f121
--- /dev/null
+++ b/benchmark/vm_fiber_reuse_gc.yml
@@ -0,0 +1,12 @@
+# https://bugs.ruby-lang.org/issues/16009
+prelude: |
+  fibers = []
+benchmark:
+  vm_fiber_reuse_gc: |
+    2000.times do
+      fiber = Fiber.new{Fiber.yield}
+      fibers << fiber
+      fiber.resume
+    end
+    fibers.clear
+loop_count: 100
diff --git a/benchmark/vm_fiber_switch.yml b/benchmark/vm_fiber_switch.yml
new file mode 100644
index 0000000000..3de36b66eb
--- /dev/null
+++ b/benchmark/vm_fiber_switch.yml
@@ -0,0 +1,9 @@
+prelude: |
+  # based on benchmark for [ruby-core:65518] [Feature #10341] by Knut Franke
+  fib = Fiber.new do
+    loop { Fiber.yield }
+  end
+benchmark:
+  vm_fiber_switch: |
+    fib.resume
+loop_count: 20000000
diff --git a/benchmark/vm_float_simple.yml b/benchmark/vm_float_simple.yml
new file mode 100644
index 0000000000..92f5fd52ab
--- /dev/null
+++ b/benchmark/vm_float_simple.yml
@@ -0,0 +1,8 @@
+prelude: |
+  f = 0.0
+benchmark:
+  vm_float_simple: |
+    f += 0.1; f -= 0.1
+    f += 0.1; f -= 0.1
+    f += 0.1; f -= 0.1
+loop_count: 30000000
diff --git a/benchmark/vm_freezestring.yml b/benchmark/vm_freezestring.yml
new file mode 100644
index 0000000000..facc9aa043
--- /dev/null
+++ b/benchmark/vm_freezestring.yml
@@ -0,0 +1,10 @@
+prelude: |
+  class String
+    def freeze
+      -self
+    end
+  end
+benchmark:
+  vm_freezestring: |
+    "tXnL1BP5T1WPXMjuFNLQtallEtRcay1t2lHtJSrlVsDgvunlbtfpr/DGdH0NGYE9".freeze
+loop_count: 6000000
diff --git a/benchmark/vm_gc.rb b/benchmark/vm_gc.rb
new file mode 100644
index 0000000000..e668026915
--- /dev/null
+++ b/benchmark/vm_gc.rb
@@ -0,0 +1,6 @@
+5000.times do
+  100.times do
+    {"xxxx"=>"yyyy"}
+  end
+  GC.start
+end
diff --git a/benchmark/vm_gc_old_full.rb b/benchmark/vm_gc_old_full.rb
new file mode 100644
index 0000000000..cfdfc8c5a5
--- /dev/null
+++ b/benchmark/vm_gc_old_full.rb
@@ -0,0 +1,4 @@
+old_object = Array.new(1_000_000){''}
+100.times do
+  GC.start
+end
diff --git a/benchmark/vm_gc_old_immediate.rb b/benchmark/vm_gc_old_immediate.rb
new file mode 100644
index 0000000000..ad22feb655
--- /dev/null
+++ b/benchmark/vm_gc_old_immediate.rb
@@ -0,0 +1,4 @@
+old_object = Array.new(1_000_000){''}
+30_000.times do
+  GC.start(full_mark: false, immediate_sweep: true)
+end
diff --git a/benchmark/vm_gc_old_lazy.rb b/benchmark/vm_gc_old_lazy.rb
new file mode 100644
index 0000000000..b74d44baf1
--- /dev/null
+++ b/benchmark/vm_gc_old_lazy.rb
@@ -0,0 +1,4 @@
+old_object = Array.new(1_000_000){''}
+30_000.times do
+  GC.start(full_mark: false, immediate_sweep: false)
+end
diff --git a/benchmark/vm_gc_short_lived.yml b/benchmark/vm_gc_short_lived.yml
new file mode 100644
index 0000000000..29c803fee3
--- /dev/null
+++ b/benchmark/vm_gc_short_lived.yml
@@ -0,0 +1,9 @@
+benchmark:
+  vm_gc_short_lived: |
+    a = '' # short-lived String
+    b = ''
+    c = ''
+    d = ''
+    e = ''
+    f = ''
+loop_count: 30000000
diff --git a/benchmark/vm_gc_short_with_complex_long.yml b/benchmark/vm_gc_short_with_complex_long.yml
new file mode 100644
index 0000000000..4b6c3ed7b9
--- /dev/null
+++ b/benchmark/vm_gc_short_with_complex_long.yml
@@ -0,0 +1,25 @@
+prelude: |
+  def nested_hash h, n
+    if n == 0
+      ''
+    else
+      10.times{
+        h[Object.new] = nested_hash(h, n-1)
+      }
+    end
+  end
+
+  long_lived = Hash.new
+  nested_hash long_lived, 6
+
+  GC.start
+  GC.start
+benchmark:
+  vm_gc_short_with_complex_long: |
+    a = '' # short-lived String
+    b = ''
+    c = ''
+    d = ''
+    e = ''
+    f = ''
+loop_count: 30000000
diff --git a/benchmark/vm_gc_short_with_long.yml b/benchmark/vm_gc_short_with_long.yml
new file mode 100644
index 0000000000..03ba0f95a9
--- /dev/null
+++ b/benchmark/vm_gc_short_with_long.yml
@@ -0,0 +1,13 @@
+prelude: |
+  long_lived = Array.new(1_000_000){|i| "#{i}"}
+  GC.start
+  GC.start
+benchmark:
+  vm_gc_short_with_long: |
+    a = '' # short-lived String
+    b = ''
+    c = ''
+    d = ''
+    e = ''
+    f = ''
+loop_count: 30000000
diff --git a/benchmark/vm_gc_short_with_symbol.yml b/benchmark/vm_gc_short_with_symbol.yml
new file mode 100644
index 0000000000..129b8bf4ed
--- /dev/null
+++ b/benchmark/vm_gc_short_with_symbol.yml
@@ -0,0 +1,13 @@
+prelude: |
+  50_000.times{|i| sym = "sym#{i}".to_sym}
+  GC.start
+  GC.start
+benchmark:
+  vm_gc_short_with_symbol: |
+    a = '' # short-lived String
+    b = ''
+    c = ''
+    d = ''
+    e = ''
+    f = ''
+loop_count: 30000000
diff --git a/benchmark/vm_gc_wb_ary.yml b/benchmark/vm_gc_wb_ary.yml
new file mode 100644
index 0000000000..e3293e72d0
--- /dev/null
+++ b/benchmark/vm_gc_wb_ary.yml
@@ -0,0 +1,12 @@
+prelude: |
+  short_lived_ary = []
+
+  if RUBY_VERSION >= "2.2.0"
+    GC.start(full_mark: false, immediate_mark: true, immediate_sweep: true)
+  end
+
+  short_lived = ''
+benchmark:
+  vm_gc_wb_ary: |
+    short_lived_ary[0] = short_lived # write barrier
+loop_count: 30000000
diff --git a/benchmark/vm_gc_wb_ary_promoted.yml b/benchmark/vm_gc_wb_ary_promoted.yml
new file mode 100644
index 0000000000..003995945b
--- /dev/null
+++ b/benchmark/vm_gc_wb_ary_promoted.yml
@@ -0,0 +1,15 @@
+prelude: |
+  long_lived = []
+
+  if RUBY_VERSION > "2.2.0"
+    3.times{ GC.start(full_mark: false, immediate_mark: true, immediate_sweep: true) }
+  elsif
+    GC.start
+  end
+
+  short_lived = ''
+
+benchmark:
+  vm_gc_wb_ary_promoted: |
+    long_lived[0] = short_lived # write barrier
+loop_count: 30000000
diff --git a/benchmark/vm_gc_wb_obj.yml b/benchmark/vm_gc_wb_obj.yml
new file mode 100644
index 0000000000..a2a2ce2d18
--- /dev/null
+++ b/benchmark/vm_gc_wb_obj.yml
@@ -0,0 +1,15 @@
+prelude: |
+  class C
+    attr_accessor :foo
+  end
+  short_lived_obj = C.new
+
+  if RUBY_VERSION >= "2.2.0"
+    GC.start(full_mark: false, immediate_mark: true, immediate_sweep: true)
+  end
+
+  short_lived = ''
+benchmark:
+  vm_gc_wb_obj: |
+    short_lived_obj.foo = short_lived # write barrier
+loop_count: 30000000
diff --git a/benchmark/vm_gc_wb_obj_promoted.yml b/benchmark/vm_gc_wb_obj_promoted.yml
new file mode 100644
index 0000000000..00a454ba72
--- /dev/null
+++ b/benchmark/vm_gc_wb_obj_promoted.yml
@@ -0,0 +1,17 @@
+prelude: |
+  class C
+    attr_accessor :foo
+  end
+  long_lived = C.new
+
+  if RUBY_VERSION >= "2.2.0"
+    3.times{ GC.start(full_mark: false, immediate_mark: true, immediate_sweep: true) }
+  elsif
+    GC.start
+  end
+
+  short_lived = ''
+benchmark:
+  vm_gc_wb_obj_promoted: |
+    long_lived.foo = short_lived # write barrier
+loop_count: 30000000
diff --git a/benchmark/vm_iclass_super.yml b/benchmark/vm_iclass_super.yml
new file mode 100644
index 0000000000..21bb7db247
--- /dev/null
+++ b/benchmark/vm_iclass_super.yml
@@ -0,0 +1,20 @@
+prelude: |
+  class C
+    def m
+      1
+    end
+
+    ("A".."M").each do |module_name|
+      eval <<-EOM
+          module #{module_name}
+            def m; super; end
+          end
+          prepend #{module_name}
+      EOM
+    end
+  end
+
+  obj = C.new
+benchmark:
+  vm_iclass_super: obj.m
+loop_count: 6000000
diff --git a/benchmark/vm_ivar.yml b/benchmark/vm_ivar.yml
new file mode 100644
index 0000000000..119531d5ef
--- /dev/null
+++ b/benchmark/vm_ivar.yml
@@ -0,0 +1,6 @@
+prelude: "@a = 1\n"
+benchmark:
+  vm_ivar: |
+    j = @a
+    k = @a
+loop_count: 30000000
diff --git a/benchmark/vm_ivar_init.yml b/benchmark/vm_ivar_init.yml
new file mode 100644
index 0000000000..c6f1633907
--- /dev/null
+++ b/benchmark/vm_ivar_init.yml
@@ -0,0 +1,14 @@
+prelude: |
+  class C
+    def initialize
+      @a = nil
+      @b = nil
+      @c = nil
+      @d = nil
+      @e = nil
+    end
+  end
+benchmark:
+  vm_ivar_init: |
+    C.new
+loop_count: 30000000
diff --git a/benchmark/vm_ivar_set.yml b/benchmark/vm_ivar_set.yml
new file mode 100644
index 0000000000..8bbb60043b
--- /dev/null
+++ b/benchmark/vm_ivar_set.yml
@@ -0,0 +1,5 @@
+benchmark:
+  vm_ivar_set: |
+    @a = 1
+    @b = 2
+loop_count: 30000000
diff --git a/benchmark/vm_ivar_set_subclass.yml b/benchmark/vm_ivar_set_subclass.yml
new file mode 100644
index 0000000000..2653d36ded
--- /dev/null
+++ b/benchmark/vm_ivar_set_subclass.yml
@@ -0,0 +1,17 @@
+prelude: |
+  class A
+    def initialize
+      @a = nil
+      @b = nil
+      @c = nil
+      @d = nil
+      @e = nil
+    end
+  end
+  class B < A; end
+  class C < A; end
+benchmark:
+  vm_ivar_init_subclass: |
+    B.new
+    C.new
+loop_count: 3000000
diff --git a/benchmark/vm_length.yml b/benchmark/vm_length.yml
new file mode 100644
index 0000000000..5fd94e7d86
--- /dev/null
+++ b/benchmark/vm_length.yml
@@ -0,0 +1,8 @@
+prelude: |
+  a = 'abc'
+  b = [1, 2, 3]
+benchmark:
+  vm_length: |
+    a.length
+    b.length
+loop_count: 30000000
diff --git a/benchmark/vm_lvar_init.yml b/benchmark/vm_lvar_init.yml
new file mode 100644
index 0000000000..70a9b1c0ca
--- /dev/null
+++ b/benchmark/vm_lvar_init.yml
@@ -0,0 +1,21 @@
+# while loop cost is not removed because `i` is used in the script
+benchmark:
+  vm_lvar_init: |
+    def m v
+      unless v
+        # unreachable code
+        v1 = v2 = v3 = v4 = v5 = v6 = v7 = v8 = v9 = v10 =
+        v11 = v12 = v13 = v14 = v15 = v16 = v17 = v18 = v19 = v20 =
+        v21 = v22 = v23 = v24 = v25 = v26 = v27 = v28 = v29 = v30 =
+        v31 = v32 = v33 = v34 = v35 = v36 = v37 = v38 = v39 = v40 =
+        v41 = v42 = v43 = v44 = v45 = v46 = v47 = v48 = v49 = v50 = 1
+      end
+    end
+
+    i = 0
+
+    while i<30_000_000
+      i += 1
+      m i
+    end
+loop_count: 1
diff --git a/benchmark/vm_lvar_set.yml b/benchmark/vm_lvar_set.yml
new file mode 100644
index 0000000000..f29f763d81
--- /dev/null
+++ b/benchmark/vm_lvar_set.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_lvar_set: |
+    a = b = c = d = e = f = g = h = j = k = l = m = n = o = p = q = r = 1
+loop_count: 30000000
diff --git a/benchmark/vm_method.yml b/benchmark/vm_method.yml
new file mode 100644
index 0000000000..d45e4ec572
--- /dev/null
+++ b/benchmark/vm_method.yml
@@ -0,0 +1,8 @@
+prelude: |
+  def m
+    nil
+  end
+benchmark:
+  vm_method: |
+    m; m; m; m; m; m; m; m;
+loop_count: 6000000
diff --git a/benchmark/vm_method_missing.yml b/benchmark/vm_method_missing.yml
new file mode 100644
index 0000000000..3da456c0bb
--- /dev/null
+++ b/benchmark/vm_method_missing.yml
@@ -0,0 +1,11 @@
+prelude: |
+  class C
+    def method_missing mid
+    end
+  end
+
+  obj = C.new
+benchmark:
+  vm_method_missing: |
+    obj.m; obj.m; obj.m; obj.m; obj.m; obj.m; obj.m; obj.m;
+loop_count: 6000000
diff --git a/benchmark/vm_method_with_block.yml b/benchmark/vm_method_with_block.yml
new file mode 100644
index 0000000000..281a481394
--- /dev/null
+++ b/benchmark/vm_method_with_block.yml
@@ -0,0 +1,8 @@
+prelude: |
+  def m
+    nil
+  end
+benchmark:
+  vm_method_with_block: |
+    m{}; m{}; m{}; m{}; m{}; m{}; m{}; m{};
+loop_count: 6000000
diff --git a/benchmark/vm_module_ann_const_set.yml b/benchmark/vm_module_ann_const_set.yml
new file mode 100644
index 0000000000..243229ba4a
--- /dev/null
+++ b/benchmark/vm_module_ann_const_set.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_module_ann_const_set: |
+    Module.new.const_set(:X, Module.new)
+loop_count: 6000000
diff --git a/benchmark/vm_module_const_set.yml b/benchmark/vm_module_const_set.yml
new file mode 100644
index 0000000000..e5a24181a9
--- /dev/null
+++ b/benchmark/vm_module_const_set.yml
@@ -0,0 +1,8 @@
+prelude: |
+  module M
+  end
+  $VERBOSE = nil
+benchmark:
+  vm_module_const_set: |
+    M.const_set(:X, Module.new)
+loop_count: 6000000
diff --git a/benchmark/vm_mutex.yml b/benchmark/vm_mutex.yml
new file mode 100644
index 0000000000..abcf1e28ce
--- /dev/null
+++ b/benchmark/vm_mutex.yml
@@ -0,0 +1,8 @@
+prelude: |
+  require 'thread'
+
+  m = Thread::Mutex.new
+benchmark:
+  vm_mutex: |
+    m.synchronize{}
+loop_count: 6000000
diff --git a/benchmark/vm_neq.yml b/benchmark/vm_neq.yml
new file mode 100644
index 0000000000..fb04d15ae8
--- /dev/null
+++ b/benchmark/vm_neq.yml
@@ -0,0 +1,7 @@
+prelude: |
+  obj1 = Object.new
+  obj2 = Object.new
+benchmark:
+  vm_neq: |
+    obj1 != obj2
+loop_count: 30000000
diff --git a/benchmark/vm_newlambda.yml b/benchmark/vm_newlambda.yml
new file mode 100644
index 0000000000..0b9787d91a
--- /dev/null
+++ b/benchmark/vm_newlambda.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_newlambda: |
+    lambda {}
+loop_count: 6000000
diff --git a/benchmark/vm_not.yml b/benchmark/vm_not.yml
new file mode 100644
index 0000000000..c68dde3c50
--- /dev/null
+++ b/benchmark/vm_not.yml
@@ -0,0 +1,6 @@
+prelude: |
+  obj = Object.new
+benchmark:
+  vm_not: |
+    !obj
+loop_count: 30000000
diff --git a/benchmark/vm_poly_method.yml b/benchmark/vm_poly_method.yml
new file mode 100644
index 0000000000..dd2f4e71de
--- /dev/null
+++ b/benchmark/vm_poly_method.yml
@@ -0,0 +1,24 @@
+# loop_count is not utilized since `i` is involved in the script
+benchmark:
+  vm_poly_method: |
+    class C1
+      def m
+        1
+      end
+    end
+    class C2
+      def m
+        2
+      end
+    end
+
+    o1 = C1.new
+    o2 = C2.new
+
+    i = 0
+    while i<6_000_000
+      o = (i % 2 == 0) ? o1 : o2
+      o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
+      i += 1
+    end
+loop_count: 1
diff --git a/benchmark/vm_poly_method_ov.yml b/benchmark/vm_poly_method_ov.yml
new file mode 100644
index 0000000000..bca1b62729
--- /dev/null
+++ b/benchmark/vm_poly_method_ov.yml
@@ -0,0 +1,24 @@
+# loop_count is not utilized since `i` is involved in the script
+benchmark:
+  vm_poly_method_ov: |
+    class C1
+      def m
+        1
+      end
+    end
+    class C2
+      def m
+        2
+      end
+    end
+
+    o1 = C1.new
+    o2 = C2.new
+
+    i = 0
+    while i<6_000_000
+      o = (i % 2 == 0) ? o1 : o2
+    #  o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
+      i += 1
+    end
+loop_count: 1
diff --git a/benchmark/vm_poly_same_method.yml b/benchmark/vm_poly_same_method.yml
new file mode 100644
index 0000000000..6c5404ac84
--- /dev/null
+++ b/benchmark/vm_poly_same_method.yml
@@ -0,0 +1,25 @@
+prelude: |
+  module AR; end
+  class AR::Base
+    def create_or_update
+      nil
+    end
+    def save
+      create_or_update
+    end
+  end
+  class Foo < AR::Base; end
+  class Bar < AR::Base; end
+  o1 = Foo.new
+  o2 = Bar.new
+benchmark:
+  vm_poly_same_method: |
+    o1.save; o2.save;
+    o1.save; o2.save;
+    o1.save; o2.save;
+    o1.save; o2.save;
+    o1.save; o2.save;
+    o1.save; o2.save;
+    o1.save; o2.save;
+    o1.save; o2.save;
+loop_count: 6000000
diff --git a/benchmark/vm_poly_singleton.yml b/benchmark/vm_poly_singleton.yml
new file mode 100644
index 0000000000..c7923160fb
--- /dev/null
+++ b/benchmark/vm_poly_singleton.yml
@@ -0,0 +1,18 @@
+# loop_count is not utilized since `i` is involved in the script
+benchmark:
+  vm_poly_singleton: |
+    class C1
+      def m; 1; end
+    end
+
+    o1 = C1.new
+    o2 = C1.new
+    o2.singleton_class
+
+    i = 0
+    while i<6_000_000 # benchmark loop 2
+      o = (i % 2 == 0) ? o1 : o2
+      o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
+      i += 1
+    end
+loop_count: 1
diff --git a/benchmark/vm_proc.yml b/benchmark/vm_proc.yml
new file mode 100644
index 0000000000..2f8de6c272
--- /dev/null
+++ b/benchmark/vm_proc.yml
@@ -0,0 +1,12 @@
+prelude: |
+  def m &b
+    b
+  end
+
+  pr = m{
+    a = 1
+  }
+benchmark:
+  vm_proc: |
+    pr.call
+loop_count: 6000000
diff --git a/benchmark/vm_raise1.yml b/benchmark/vm_raise1.yml
new file mode 100644
index 0000000000..247d9f70ee
--- /dev/null
+++ b/benchmark/vm_raise1.yml
@@ -0,0 +1,16 @@
+prelude: |
+  def rec n
+    if n > 0
+      rec n-1
+    else
+      raise
+    end
+  end
+benchmark:
+  vm_raise1: |
+    begin
+      rec 1
+    rescue
+      # ignore
+    end
+loop_count: 6000000
diff --git a/benchmark/vm_raise2.yml b/benchmark/vm_raise2.yml
new file mode 100644
index 0000000000..f0fa047b3c
--- /dev/null
+++ b/benchmark/vm_raise2.yml
@@ -0,0 +1,16 @@
+prelude: |
+  def rec n
+    if n > 0
+      rec n-1
+    else
+      raise
+    end
+  end
+benchmark:
+  vm_raise2: |
+    begin
+      rec 10
+    rescue
+      # ignore
+    end
+loop_count: 6000000
diff --git a/benchmark/vm_regexp.yml b/benchmark/vm_regexp.yml
new file mode 100644
index 0000000000..2aa3d94dbd
--- /dev/null
+++ b/benchmark/vm_regexp.yml
@@ -0,0 +1,8 @@
+prelude: |
+  str = 'xxxhogexxx'
+benchmark:
+  vm_regexp: |
+    /hoge/ =~ str
+  vm_regexp_invert: |
+    str =~ /hoge/
+loop_count: 6000000
diff --git a/benchmark/vm_rescue.yml b/benchmark/vm_rescue.yml
new file mode 100644
index 0000000000..b4a0af521f
--- /dev/null
+++ b/benchmark/vm_rescue.yml
@@ -0,0 +1,6 @@
+benchmark:
+  vm_rescue: |
+    begin
+    rescue
+    end
+loop_count: 30000000
diff --git a/benchmark/vm_send.yml b/benchmark/vm_send.yml
new file mode 100644
index 0000000000..f31bc7ac89
--- /dev/null
+++ b/benchmark/vm_send.yml
@@ -0,0 +1,14 @@
+prelude: |
+  class C
+    def m
+    end
+  end
+
+  o = C.new
+  m = :m
+benchmark:
+  vm_send: |
+    o.__send__ :m
+  vm_send_var: |
+    o.__send__ m
+loop_count: 6000000
diff --git a/benchmark/vm_send_cfunc.yml b/benchmark/vm_send_cfunc.yml
new file mode 100644
index 0000000000..b114ac317d
--- /dev/null
+++ b/benchmark/vm_send_cfunc.yml
@@ -0,0 +1,3 @@
+benchmark:
+  vm_send_cfunc: self.class
+loop_count: 100000000
diff --git a/benchmark/vm_simplereturn.yml b/benchmark/vm_simplereturn.yml
new file mode 100644
index 0000000000..c9829cff0b
--- /dev/null
+++ b/benchmark/vm_simplereturn.yml
@@ -0,0 +1,7 @@
+prelude: |
+  def m
+    return 1
+  end
+benchmark:
+  vm_simplereturn: m
+loop_count: 30000000
diff --git a/benchmark/vm_string_literal.yml b/benchmark/vm_string_literal.yml
new file mode 100644
index 0000000000..64439c7980
--- /dev/null
+++ b/benchmark/vm_string_literal.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_string_literal: |
+    x = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+loop_count: 6000000
diff --git a/benchmark/vm_struct_big_aref_hi.yml b/benchmark/vm_struct_big_aref_hi.yml
new file mode 100644
index 0000000000..4cf78970cb
--- /dev/null
+++ b/benchmark/vm_struct_big_aref_hi.yml
@@ -0,0 +1,7 @@
+prelude: |
+  s = Struct.new(*('a'..'z').map { |x| x.to_sym })
+  x = s.new
+benchmark:
+  vm_struct_big_aref_hi: |
+    x.z # x[25]
+loop_count: 6000000
diff --git a/benchmark/vm_struct_big_aref_lo.yml b/benchmark/vm_struct_big_aref_lo.yml
new file mode 100644
index 0000000000..c91af27fa5
--- /dev/null
+++ b/benchmark/vm_struct_big_aref_lo.yml
@@ -0,0 +1,7 @@
+prelude: |
+  s = Struct.new(*('a'..'z').map { |x| x.to_sym })
+  x = s.new
+benchmark:
+  vm_struct_big_aref_lo: |
+    x.k # x[10]
+loop_count: 6000000
diff --git a/benchmark/vm_struct_big_aset.yml b/benchmark/vm_struct_big_aset.yml
new file mode 100644
index 0000000000..69550d14ea
--- /dev/null
+++ b/benchmark/vm_struct_big_aset.yml
@@ -0,0 +1,11 @@
+# loop_count is not utilized since `i` is involved in the script
+benchmark:
+  vm_struct_big_aset: |
+    s = Struct.new(*('a'..'z').map { |x| x.to_sym })
+    x = s.new
+    i = 0
+    while i<6_000_000
+      i += 1
+      x.k = i # x[10] = i
+    end
+loop_count: 1
diff --git a/benchmark/vm_struct_big_href_hi.yml b/benchmark/vm_struct_big_href_hi.yml
new file mode 100644
index 0000000000..09b764dd13
--- /dev/null
+++ b/benchmark/vm_struct_big_href_hi.yml
@@ -0,0 +1,7 @@
+prelude: |
+  s = Struct.new(*('a'..'z').map { |x| x.to_sym })
+  x = s.new
+benchmark:
+  vm_struct_big_href_hi: |
+    x[:z]
+loop_count: 6000000
diff --git a/benchmark/vm_struct_big_href_lo.yml b/benchmark/vm_struct_big_href_lo.yml
new file mode 100644
index 0000000000..d2f00b220f
--- /dev/null
+++ b/benchmark/vm_struct_big_href_lo.yml
@@ -0,0 +1,7 @@
+prelude: |
+  s = Struct.new(*('a'..'z').map { |x| x.to_sym })
+  x = s.new
+benchmark:
+  vm_struct_big_href_lo: |
+    x[:k]
+loop_count: 6000000
diff --git a/benchmark/vm_struct_big_hset.yml b/benchmark/vm_struct_big_hset.yml
new file mode 100644
index 0000000000..fc45cbee9c
--- /dev/null
+++ b/benchmark/vm_struct_big_hset.yml
@@ -0,0 +1,11 @@
+# loop_count is not utilized since `i` is involved in the script
+benchmark:
+  vm_struct_big_hset: |
+    s = Struct.new(*('a'..'z').map { |x| x.to_sym })
+    x = s.new
+    i = 0
+    while i<6_000_000
+      i += 1
+      x[:k] = i
+    end
+loop_count: 1
diff --git a/benchmark/vm_struct_small_aref.yml b/benchmark/vm_struct_small_aref.yml
new file mode 100644
index 0000000000..5a83251d1e
--- /dev/null
+++ b/benchmark/vm_struct_small_aref.yml
@@ -0,0 +1,7 @@
+prelude: |
+  s = Struct.new(:a, :b, :c)
+  x = s.new
+benchmark:
+  vm_struct_small_aref: |
+    x.a
+loop_count: 6000000
diff --git a/benchmark/vm_struct_small_aset.yml b/benchmark/vm_struct_small_aset.yml
new file mode 100644
index 0000000000..74f435f126
--- /dev/null
+++ b/benchmark/vm_struct_small_aset.yml
@@ -0,0 +1,11 @@
+# loop_count is not utilized since `i` is involved in the script
+benchmark:
+  vm_struct_small_aset: |
+    s = Struct.new(:a, :b, :c)
+    x = s.new
+    i = 0
+    while i<6_000_000
+      i += 1
+      x.a = i
+    end
+loop_count: 1
diff --git a/benchmark/vm_struct_small_href.yml b/benchmark/vm_struct_small_href.yml
new file mode 100644
index 0000000000..6b7d7f39e7
--- /dev/null
+++ b/benchmark/vm_struct_small_href.yml
@@ -0,0 +1,7 @@
+prelude: |
+  s = Struct.new(:a, :b, :c)
+  x = s.new
+benchmark:
+  vm_struct_small_href: |
+    x[:a]
+loop_count: 6000000
diff --git a/benchmark/vm_struct_small_hset.yml b/benchmark/vm_struct_small_hset.yml
new file mode 100644
index 0000000000..5d43b150de
--- /dev/null
+++ b/benchmark/vm_struct_small_hset.yml
@@ -0,0 +1,7 @@
+prelude: |
+  s = Struct.new(:a, :b, :c)
+  x = s.new
+benchmark:
+  vm_struct_small_hset: |
+    x[:a] = 1
+loop_count: 6000000
diff --git a/benchmark/vm_super.yml b/benchmark/vm_super.yml
new file mode 100644
index 0000000000..0d1e965c6e
--- /dev/null
+++ b/benchmark/vm_super.yml
@@ -0,0 +1,17 @@
+prelude: |
+  class C
+    def m
+      1
+    end
+  end
+
+  class CC < C
+    def m
+      super()
+    end
+  end
+
+  obj = CC.new
+benchmark:
+  vm_super: obj.m
+loop_count: 6000000
diff --git a/benchmark/vm_swap.yml b/benchmark/vm_swap.yml
new file mode 100644
index 0000000000..e824a65e0a
--- /dev/null
+++ b/benchmark/vm_swap.yml
@@ -0,0 +1,7 @@
+prelude: |
+  a = 1
+  b = 2
+benchmark:
+  vm_swap: |
+    a, b = b, a
+loop_count: 30000000
diff --git a/benchmark/vm_symbol_block_pass.rb b/benchmark/vm_symbol_block_pass.rb
new file mode 100644
index 0000000000..1d433353e1
--- /dev/null
+++ b/benchmark/vm_symbol_block_pass.rb
@@ -0,0 +1,13 @@
+class C
+  1000.times {|i|
+    eval("def i#{i};end")
+  }
+end
+
+c = C.new
+m = C.instance_methods(false)
+5_000.times do
+  m.each do |n|
+    c.tap(&n)
+  end
+end
diff --git a/benchmark/vm_thread_alive_check.yml b/benchmark/vm_thread_alive_check.yml
new file mode 100644
index 0000000000..d21737d3e8
--- /dev/null
+++ b/benchmark/vm_thread_alive_check.yml
@@ -0,0 +1,8 @@
+benchmark:
+  vm_thread_alive_check: |
+    t = Thread.new{}
+    while t.alive?
+      Thread.pass
+    end
+loop_count: 50_000
+
diff --git a/benchmark/vm_thread_close.rb b/benchmark/vm_thread_close.rb
new file mode 100644
index 0000000000..3e9a265ce8
--- /dev/null
+++ b/benchmark/vm_thread_close.rb
@@ -0,0 +1,6 @@
+1000.times { Thread.new { sleep } }
+i = 0
+while i<100_000 # benchmark loop 3
+  i += 1
+  IO.pipe.each(&:close)
+end
diff --git a/benchmark/vm_thread_condvar1.rb b/benchmark/vm_thread_condvar1.rb
new file mode 100644
index 0000000000..cf5706b23e
--- /dev/null
+++ b/benchmark/vm_thread_condvar1.rb
@@ -0,0 +1,28 @@
+# two threads, two mutex, two condvar ping-pong
+require 'thread'
+m1 = Mutex.new
+m2 = Mutex.new
+cv1 = ConditionVariable.new
+cv2 = ConditionVariable.new
+max = 100000
+i = 0
+wait = nil
+m2.synchronize do
+  wait = Thread.new do
+    m1.synchronize do
+      m2.synchronize { cv2.signal }
+      while (i += 1) < max
+        cv1.wait(m1)
+        cv2.signal
+      end
+    end
+  end
+  cv2.wait(m2)
+end
+m1.synchronize do
+  while i < max
+    cv1.signal
+    cv2.wait(m1)
+  end
+end
+wait.join
diff --git a/benchmark/vm_thread_condvar2.rb b/benchmark/vm_thread_condvar2.rb
new file mode 100644
index 0000000000..7c8dc19481
--- /dev/null
+++ b/benchmark/vm_thread_condvar2.rb
@@ -0,0 +1,35 @@
+# many threads, one mutex, many condvars
+require 'thread'
+m = Mutex.new
+cv1 = ConditionVariable.new
+cv2 = ConditionVariable.new
+max = 1000
+n = 100
+waiting = 0
+scvs = []
+waiters = n.times.map do |i|
+  start_cv = ConditionVariable.new
+  scvs << start_cv
+  start_mtx = Mutex.new
+  start_mtx.synchronize do
+    th = Thread.new(start_mtx, start_cv) do |sm, scv|
+      m.synchronize do
+        sm.synchronize { scv.signal }
+        max.times do
+          cv2.signal if (waiting += 1) == n
+          cv1.wait(m)
+        end
+      end
+    end
+    start_cv.wait(start_mtx)
+    th
+  end
+end
+m.synchronize do
+  max.times do
+    cv2.wait(m) until waiting == n
+    waiting = 0
+    cv1.broadcast
+  end
+end
+waiters.each(&:join)
diff --git a/benchmark/vm_thread_create_join.rb b/benchmark/vm_thread_create_join.rb
new file mode 100644
index 0000000000..393cd45df9
--- /dev/null
+++ b/benchmark/vm_thread_create_join.rb
@@ -0,0 +1,6 @@
+i = 0
+while i<100_000 # benchmark loop 3
+  i += 1
+  Thread.new{
+  }.join
+end
diff --git a/benchmark/vm_thread_mutex1.rb b/benchmark/vm_thread_mutex1.rb
new file mode 100644
index 0000000000..66e42c85e1
--- /dev/null
+++ b/benchmark/vm_thread_mutex1.rb
@@ -0,0 +1,21 @@
+# one thread, one mutex (no contention)
+
+require 'thread'
+m = Thread::Mutex.new
+r = 0
+max = 2000
+lmax = max * max
+(1..1).map{
+  Thread.new{
+    i = 0
+    while i<lmax
+      i += 1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max
diff --git a/benchmark/vm_thread_mutex2.rb b/benchmark/vm_thread_mutex2.rb
new file mode 100644
index 0000000000..6e6c804c31
--- /dev/null
+++ b/benchmark/vm_thread_mutex2.rb
@@ -0,0 +1,21 @@
+# two threads, one mutex
+
+require 'thread'
+m = Thread::Mutex.new
+r = 0
+max = 2000
+lmax = (max * max)/2
+(1..2).map{
+  Thread.new{
+    i = 0
+    while i<lmax
+      i += 1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max
diff --git a/benchmark/vm_thread_mutex3.rb b/benchmark/vm_thread_mutex3.rb
new file mode 100644
index 0000000000..c750dc542a
--- /dev/null
+++ b/benchmark/vm_thread_mutex3.rb
@@ -0,0 +1,20 @@
+# 1000 threads, one mutex
+
+require 'thread'
+m = Thread::Mutex.new
+r = 0
+max = 2000
+(1..max).map{
+  Thread.new{
+    i = 0
+    while i<max
+      i += 1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max
diff --git a/benchmark/vm_thread_pass.rb b/benchmark/vm_thread_pass.rb
new file mode 100644
index 0000000000..438bd08d45
--- /dev/null
+++ b/benchmark/vm_thread_pass.rb
@@ -0,0 +1,15 @@
+# Plenty Thread.pass
+# A performance may depend on GVL implementation.
+
+tmax = (ARGV.shift || 8).to_i
+lmax = 400_000 / tmax
+
+(1..tmax).map{
+  Thread.new{
+    lmax.times{
+      Thread.pass
+    }
+  }
+}.each{|t| t.join}
+
+
diff --git a/benchmark/vm_thread_pass_flood.rb b/benchmark/vm_thread_pass_flood.rb
new file mode 100644
index 0000000000..65df8e6154
--- /dev/null
+++ b/benchmark/vm_thread_pass_flood.rb
@@ -0,0 +1,10 @@
+# n.b. this is a good test for GVL when pinned to a single CPU
+
+5_000.times{
+  Thread.new{loop{Thread.pass}}
+}
+
+i = 0
+while i<10_000
+  i += 1
+end
diff --git a/benchmark/vm_thread_pipe.rb b/benchmark/vm_thread_pipe.rb
new file mode 100644
index 0000000000..112a621905
--- /dev/null
+++ b/benchmark/vm_thread_pipe.rb
@@ -0,0 +1,17 @@
+# Measure small and plenty pipe read/write.
+# A performance may depend on GVL implementation.
+
+lmax = 100_000
+r, w = IO.pipe
+[Thread.new{
+  lmax.times{
+    w.write('a')
+  }
+  p "w:exit"
+}, Thread.new{
+  lmax.times{
+    r.read(1)
+  }
+  p "r:exit"
+}].each{|t| t.join}
+
diff --git a/benchmark/vm_thread_queue.rb b/benchmark/vm_thread_queue.rb
new file mode 100644
index 0000000000..1dd3696a3c
--- /dev/null
+++ b/benchmark/vm_thread_queue.rb
@@ -0,0 +1,18 @@
+require 'thread'
+
+n = 10_000_000
+q = Thread::Queue.new
+consumer = Thread.new{
+  while q.pop
+    # consuming
+  end
+}
+
+producer = Thread.new{
+  n.times{
+    q.push true
+  }
+  q.push nil
+}
+
+consumer.join
diff --git a/benchmark/vm_thread_sized_queue.rb b/benchmark/vm_thread_sized_queue.rb
new file mode 100644
index 0000000000..7b9af5482b
--- /dev/null
+++ b/benchmark/vm_thread_sized_queue.rb
@@ -0,0 +1,20 @@
+require 'thread'
+# on producer, one consumer
+
+n = 1_000_000
+q = Thread::SizedQueue.new(100)
+consumer = Thread.new{
+  while q.pop
+    # consuming
+  end
+}
+
+producer = Thread.new{
+  while n > 0
+    q.push true
+    n -= 1
+  end
+  q.push nil
+}
+
+consumer.join
diff --git a/benchmark/vm_thread_sized_queue2.rb b/benchmark/vm_thread_sized_queue2.rb
new file mode 100644
index 0000000000..de9f55e978
--- /dev/null
+++ b/benchmark/vm_thread_sized_queue2.rb
@@ -0,0 +1,23 @@
+require 'thread'
+# one producer, many consumers
+n = 1_000_000
+m = 10
+q = Thread::SizedQueue.new(100)
+consumers = m.times.map do
+  Thread.new do
+    while q.pop
+      # consuming
+    end
+  end
+end
+
+producer = Thread.new do
+  while n > 0
+    q.push true
+    n -= 1
+  end
+  m.times { q.push nil }
+end
+
+producer.join
+consumers.each(&:join)
diff --git a/benchmark/vm_thread_sized_queue3.rb b/benchmark/vm_thread_sized_queue3.rb
new file mode 100644
index 0000000000..ce5f1796d8
--- /dev/null
+++ b/benchmark/vm_thread_sized_queue3.rb
@@ -0,0 +1,22 @@
+require 'thread'
+# many producers, one consumer
+n = 1_000_000
+m = 10
+q = Thread::SizedQueue.new(100)
+consumer = Thread.new do
+  while q.pop
+    # consuming
+  end
+end
+
+producers = m.times.map do
+  Thread.new do
+    while n > 0
+      q.push true
+      n -= 1
+    end
+  end
+end
+producers.each(&:join)
+q.push nil
+consumer.join
diff --git a/benchmark/vm_thread_sized_queue4.rb b/benchmark/vm_thread_sized_queue4.rb
new file mode 100644
index 0000000000..a9b7d80ec0
--- /dev/null
+++ b/benchmark/vm_thread_sized_queue4.rb
@@ -0,0 +1,26 @@
+require 'thread'
+# many producers, many consumers
+nr = 1_000_000
+n = 10
+m = 10
+q = Thread::SizedQueue.new(100)
+consumers = n.times.map do
+  Thread.new do
+    while q.pop
+      # consuming
+    end
+  end
+end
+
+producers = m.times.map do
+  Thread.new do
+    while nr > 0
+      q.push true
+      nr -= 1
+    end
+  end
+end
+
+producers.each(&:join)
+n.times { q.push nil }
+consumers.each(&:join)
diff --git a/benchmark/vm_thread_sleep.yml b/benchmark/vm_thread_sleep.yml
new file mode 100644
index 0000000000..96901d8466
--- /dev/null
+++ b/benchmark/vm_thread_sleep.yml
@@ -0,0 +1,4 @@
+benchmark:
+  vm_thread_sleep: |
+    Thread.new { sleep }
+loop_count: 10_000
diff --git a/benchmark/vm_unif1.yml b/benchmark/vm_unif1.yml
new file mode 100644
index 0000000000..04187bb0e2
--- /dev/null
+++ b/benchmark/vm_unif1.yml
@@ -0,0 +1,7 @@
+prelude: |
+  def m a, b
+  end
+benchmark:
+  vm_unif1: |
+    m 100, 200
+loop_count: 6000000
diff --git a/benchmark/vm_yield.yml b/benchmark/vm_yield.yml
new file mode 100644
index 0000000000..230be3d84f
--- /dev/null
+++ b/benchmark/vm_yield.yml
@@ -0,0 +1,13 @@
+# while loop cost is not removed due to benchmark_driver.gem's limitation
+benchmark:
+  vm_yield: |
+    def m
+      i = 0
+      while i<30_000_000
+        i += 1
+        yield
+      end
+    end
+
+    m{}
+loop_count: 1
diff --git a/benchmark/vm_zsuper.yml b/benchmark/vm_zsuper.yml
new file mode 100644
index 0000000000..bfb5837578
--- /dev/null
+++ b/benchmark/vm_zsuper.yml
@@ -0,0 +1,18 @@
+prelude: |
+  class C
+    def m a
+      1
+    end
+  end
+
+  class CC < C
+    def m a
+      super
+    end
+  end
+
+  obj = CC.new
+benchmark:
+  vm_zsuper: |
+    obj.m 10
+loop_count: 6000000
diff --git a/benchmark/wc.input.base b/benchmark/wc.input.base
deleted file mode 100644
index 41143fbac0..0000000000
--- a/benchmark/wc.input.base
+++ /dev/null
@@ -1,25 +0,0 @@
-Subject:      Re: Who was Izchak Miller?
-From:         "Jane D. Anonymous" <nobody@yale.edu>
-Date:         1996/04/28
-Message-Id:   <4lv7bc$oh@news.ycc.yale.edu>
-References:   <317C405E.5DFA@panix.com> <4lk6vl$gde@ns.oar.net>
-To:           75176.2330@compuserve.com
-Content-Type: text/plain; charset=us-ascii
-Organization: Yale University
-X-Url:        news:4lk6vl$gde@ns.oar.net
-Mime-Version: 1.0
-Newsgroups:   rec.games.roguelike.nethack
-X-Mailer:     Mozilla 1.1N (Macintosh; I; 68K)
-
-Hello there, Izchak Miller was my father.  When I was younger I spent 
-many a night, hunched over the keyboard with a cup of tea, playing 
-nethack with him and my brother.  my dad was a philosopher with a strong 
-weakness for fantasy/sci fi.  I remember when he started to get involved 
-with the Nethack team- my brother's Dungeons and Dragons monster book 
-found a regular place beside my dad's desk. it's nice to see him living 
-on in the game he loved so much :-).  
-                                                                  Tamar Miller
-
-The following is a really long word of 5000 characters:
-
-wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww
diff --git a/bignum.c b/bignum.c
index 5a608774e7..7c55366ecb 100644
--- a/bignum.c
+++ b/bignum.c
@@ -9,45 +9,2921 @@
 
 **********************************************************************/
 
-#include "ruby/ruby.h"
+#include "ruby/internal/config.h"
 
-#include <math.h>
-#include <float.h>
 #include <ctype.h>
+#include <float.h>
+#include <math.h>
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
 #ifdef HAVE_IEEEFP_H
-#include <ieeefp.h>
+# include <ieeefp.h>
+#endif
+
+#if defined(HAVE_LIBGMP) && defined(HAVE_GMP_H)
+# define USE_GMP
+# include <gmp.h>
 #endif
 
-VALUE rb_cBignum;
+#include "id.h"
+#include "internal.h"
+#include "internal/bignum.h"
+#include "internal/complex.h"
+#include "internal/gc.h"
+#include "internal/numeric.h"
+#include "internal/object.h"
+#include "internal/sanitizers.h"
+#include "internal/util.h"
+#include "internal/variable.h"
+#include "internal/warnings.h"
+#include "ruby/thread.h"
+#include "ruby/util.h"
+#include "ruby_assert.h"
+
+#define RB_BIGNUM_TYPE_P(x) RB_TYPE_P((x), T_BIGNUM)
+
+const char ruby_digitmap[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+
+#ifndef SIZEOF_BDIGIT_DBL
+# if SIZEOF_INT*2 <= SIZEOF_LONG_LONG
+#  define SIZEOF_BDIGIT_DBL SIZEOF_LONG_LONG
+# else
+#  define SIZEOF_BDIGIT_DBL SIZEOF_LONG
+# endif
+#endif
 
-#if defined __MINGW32__
-#define USHORT _USHORT
+STATIC_ASSERT(sizeof_bdigit_dbl, sizeof(BDIGIT_DBL) == SIZEOF_BDIGIT_DBL);
+STATIC_ASSERT(sizeof_bdigit_dbl_signed, sizeof(BDIGIT_DBL_SIGNED) == SIZEOF_BDIGIT_DBL);
+STATIC_ASSERT(sizeof_bdigit, SIZEOF_BDIGIT <= sizeof(BDIGIT));
+STATIC_ASSERT(sizeof_bdigit_and_dbl, SIZEOF_BDIGIT*2 <= SIZEOF_BDIGIT_DBL);
+STATIC_ASSERT(bdigit_signedness, 0 < (BDIGIT)-1);
+STATIC_ASSERT(bdigit_dbl_signedness, 0 < (BDIGIT_DBL)-1);
+STATIC_ASSERT(bdigit_dbl_signed_signedness, 0 > (BDIGIT_DBL_SIGNED)-1);
+STATIC_ASSERT(rbignum_embed_len_max, BIGNUM_EMBED_LEN_MAX <= (BIGNUM_EMBED_LEN_MASK >> BIGNUM_EMBED_LEN_SHIFT));
+
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+STATIC_ASSERT(sizeof_long_and_sizeof_bdigit, SIZEOF_LONG % SIZEOF_BDIGIT == 0);
+#else
+STATIC_ASSERT(sizeof_long_and_sizeof_bdigit, SIZEOF_BDIGIT % SIZEOF_LONG == 0);
 #endif
 
-#define BDIGITS(x) (RBIGNUM_DIGITS(x))
-#define BITSPERDIG (SIZEOF_BDIGITS*CHAR_BIT)
+#ifdef WORDS_BIGENDIAN
+#   define HOST_BIGENDIAN_P 1
+#else
+#   define HOST_BIGENDIAN_P 0
+#endif
+/* (!LSHIFTABLE(d, n) ? 0 : (n)) is same as n but suppress a warning, C4293, by Visual Studio.  */
+#define LSHIFTABLE(d, n) ((n) < sizeof(d) * CHAR_BIT)
+#define LSHIFTX(d, n) (!LSHIFTABLE(d, n) ? 0 : ((d) << (!LSHIFTABLE(d, n) ? 0 : (n))))
+#define CLEAR_LOWBITS(d, numbits) ((d) & LSHIFTX(~((d)*0), (numbits)))
+#define FILL_LOWBITS(d, numbits) ((d) | (LSHIFTX(((d)*0+1), (numbits))-1))
+#define POW2_P(x) (((x)&((x)-1))==0)
+
+#define BDIGITS(x) (BIGNUM_DIGITS(x))
+#define BITSPERDIG (SIZEOF_BDIGIT*CHAR_BIT)
 #define BIGRAD ((BDIGIT_DBL)1 << BITSPERDIG)
-#define DIGSPERLONG ((unsigned int)(SIZEOF_LONG/SIZEOF_BDIGITS))
-#if HAVE_LONG_LONG
-# define DIGSPERLL ((unsigned int)(SIZEOF_LONG_LONG/SIZEOF_BDIGITS))
+#define BIGRAD_HALF ((BDIGIT)(BIGRAD >> 1))
+#define BDIGIT_MSB(d) (((d) & BIGRAD_HALF) != 0)
+#define BIGUP(x) LSHIFTX(((x) + (BDIGIT_DBL)0), BITSPERDIG)
+#define BIGDN(x) RSHIFT((x),BITSPERDIG)
+#define BIGLO(x) ((BDIGIT)((x) & BDIGMAX))
+#define BDIGMAX ((BDIGIT)(BIGRAD-1))
+#define BDIGIT_DBL_MAX (~(BDIGIT_DBL)0)
+
+#if SIZEOF_BDIGIT == 2
+#   define swap_bdigit(x) swap16(x)
+#elif SIZEOF_BDIGIT == 4
+#   define swap_bdigit(x) swap32(x)
+#elif SIZEOF_BDIGIT == 8
+#   define swap_bdigit(x) swap64(x)
 #endif
-#define BIGUP(x) ((BDIGIT_DBL)(x) << BITSPERDIG)
-#define BIGDN(x) RSHIFT(x,BITSPERDIG)
-#define BIGLO(x) ((BDIGIT)((x) & (BIGRAD-1)))
-#define BDIGMAX ((BDIGIT)-1)
 
-#define BIGZEROP(x) (RBIGNUM_LEN(x) == 0 || \
+#define BIGZEROP(x) (BIGNUM_LEN(x) == 0 || \
 		     (BDIGITS(x)[0] == 0 && \
-		      (RBIGNUM_LEN(x) == 1 || bigzero_p(x))))
+		      (BIGNUM_LEN(x) == 1 || bigzero_p(x))))
+#define BIGSIZE(x) (BIGNUM_LEN(x) == 0 ? (size_t)0 : \
+    BDIGITS(x)[BIGNUM_LEN(x)-1] ? \
+        (size_t)(BIGNUM_LEN(x)*SIZEOF_BDIGIT - nlz(BDIGITS(x)[BIGNUM_LEN(x)-1])/CHAR_BIT) : \
+    rb_absint_size(x, NULL))
+
+#define BIGDIVREM_EXTRA_WORDS 1
+#define bdigit_roomof(n) roomof(n, SIZEOF_BDIGIT)
+#define BARY_ARGS(ary) ary, numberof(ary)
+
+#define BARY_ADD(z, x, y) bary_add(BARY_ARGS(z), BARY_ARGS(x), BARY_ARGS(y))
+#define BARY_SUB(z, x, y) bary_sub(BARY_ARGS(z), BARY_ARGS(x), BARY_ARGS(y))
+#define BARY_SHORT_MUL(z, x, y) bary_short_mul(BARY_ARGS(z), BARY_ARGS(x), BARY_ARGS(y))
+#define BARY_DIVMOD(q, r, x, y) bary_divmod(BARY_ARGS(q), BARY_ARGS(r), BARY_ARGS(x), BARY_ARGS(y))
+#define BARY_ZERO_P(x) bary_zero_p(BARY_ARGS(x))
+
+#define BIGNUM_SET_NEGATIVE_SIGN(b) BIGNUM_SET_SIGN(b, 0)
+#define BIGNUM_SET_POSITIVE_SIGN(b) BIGNUM_SET_SIGN(b, 1)
+
+#define bignew(len,sign) bignew_1(rb_cInteger,(len),(sign))
+
+#define BDIGITS_ZERO(ptr, n) do { \
+  BDIGIT *bdigitz_zero_ptr = (ptr); \
+  size_t bdigitz_zero_n = (n); \
+  while (bdigitz_zero_n) { \
+    *bdigitz_zero_ptr++ = 0; \
+    bdigitz_zero_n--; \
+  } \
+} while (0)
+
+#define BARY_TRUNC(ds, n) do { \
+        while (0 < (n) && (ds)[(n)-1] == 0) \
+            (n)--; \
+    } while (0)
+
+#define KARATSUBA_BALANCED(xn, yn) ((yn)/2 < (xn))
+#define TOOM3_BALANCED(xn, yn) (((yn)+2)/3 * 2 < (xn))
+
+#define GMP_MUL_DIGITS 20
+#define KARATSUBA_MUL_DIGITS 70
+#define TOOM3_MUL_DIGITS 150
+
+#define GMP_DIV_DIGITS 20
+#define GMP_BIG2STR_DIGITS 20
+#define GMP_STR2BIG_DIGITS 20
+#ifdef USE_GMP
+# define NAIVE_MUL_DIGITS GMP_MUL_DIGITS
+#else
+# define NAIVE_MUL_DIGITS KARATSUBA_MUL_DIGITS
+#endif
+
+typedef void (mulfunc_t)(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn);
+
+static mulfunc_t bary_mul_toom3_start;
+static mulfunc_t bary_mul_karatsuba_start;
+static BDIGIT bigdivrem_single(BDIGIT *qds, const BDIGIT *xds, size_t xn, BDIGIT y);
+static void bary_divmod(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn);
+
+static VALUE bigmul0(VALUE x, VALUE y);
+static void bary_mul_toom3(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn);
+static VALUE bignew_1(VALUE klass, size_t len, int sign);
+static inline VALUE bigtrunc(VALUE x);
+
+static VALUE bigsq(VALUE x);
+static void bigdivmod(VALUE x, VALUE y, volatile VALUE *divp, volatile VALUE *modp);
+static inline VALUE power_cache_get_power(int base, int power_level, size_t *numdigits_ret);
+
+#if SIZEOF_BDIGIT <= SIZEOF_INT
+static int nlz(BDIGIT x) { return nlz_int((unsigned int)x) - (SIZEOF_INT-SIZEOF_BDIGIT) * CHAR_BIT; }
+#elif SIZEOF_BDIGIT <= SIZEOF_LONG
+static int nlz(BDIGIT x) { return nlz_long((unsigned long)x) - (SIZEOF_LONG-SIZEOF_BDIGIT) * CHAR_BIT; }
+#elif SIZEOF_BDIGIT <= SIZEOF_LONG_LONG
+static int nlz(BDIGIT x) { return nlz_long_long((unsigned LONG_LONG)x) - (SIZEOF_LONG_LONG-SIZEOF_BDIGIT) * CHAR_BIT; }
+#elif SIZEOF_BDIGIT <= SIZEOF_INT128_T
+static int nlz(BDIGIT x) { return nlz_int128((uint128_t)x) - (SIZEOF_INT128_T-SIZEOF_BDIGIT) * CHAR_BIT; }
+#endif
+
+#define U16(a) ((uint16_t)(a))
+#define U32(a) ((uint32_t)(a))
+#ifdef HAVE_UINT64_T
+#define U64(a,b) (((uint64_t)(a) << 32) | (b))
+#endif
+#ifdef HAVE_UINT128_T
+#define U128(a,b,c,d) (((uint128_t)U64(a,b) << 64) | U64(c,d))
+#endif
+
+/* The following script, maxpow.rb, generates the tables follows.
+
+def big(n, bits)
+  ns = []
+  ((bits+31)/32).times {
+    ns << sprintf("0x%08x", n & 0xffff_ffff)
+    n >>= 32
+  }
+  "U#{bits}(" + ns.reverse.join(",") + ")"
+end
+def values(ary, width, indent)
+  lines = [""]
+  ary.each {|e|
+    lines << "" if !ary.last.empty? && width < (lines.last + e + ", ").length
+    lines.last << e + ", "
+  }
+  lines.map {|line| " " * indent + line.chomp(" ") + "\n" }.join
+end
+[16,32,64,128].each {|bits|
+  max = 2**bits-1
+  exps = []
+  nums = []
+  2.upto(36) {|base|
+    exp = 0
+    n = 1
+    while n * base <= max
+      exp += 1
+      n *= base
+    end
+    exps << exp.to_s
+    nums << big(n, bits)
+  }
+  puts "#ifdef HAVE_UINT#{bits}_T"
+  puts "static const int maxpow#{bits}_exp[35] = {"
+  print values(exps, 70, 4)
+  puts "};"
+  puts "static const uint#{bits}_t maxpow#{bits}_num[35] = {"
+  print values(nums, 70, 4)
+  puts "};"
+  puts "#endif"
+}
+
+ */
+
+#if SIZEOF_BDIGIT_DBL == 2
+static const int maxpow16_exp[35] = {
+    15, 10, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3,
+    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+};
+static const uint16_t maxpow16_num[35] = {
+    U16(0x00008000), U16(0x0000e6a9), U16(0x00004000), U16(0x00003d09),
+    U16(0x0000b640), U16(0x000041a7), U16(0x00008000), U16(0x0000e6a9),
+    U16(0x00002710), U16(0x00003931), U16(0x00005100), U16(0x00006f91),
+    U16(0x00009610), U16(0x0000c5c1), U16(0x00001000), U16(0x00001331),
+    U16(0x000016c8), U16(0x00001acb), U16(0x00001f40), U16(0x0000242d),
+    U16(0x00002998), U16(0x00002f87), U16(0x00003600), U16(0x00003d09),
+    U16(0x000044a8), U16(0x00004ce3), U16(0x000055c0), U16(0x00005f45),
+    U16(0x00006978), U16(0x0000745f), U16(0x00008000), U16(0x00008c61),
+    U16(0x00009988), U16(0x0000a77b), U16(0x0000b640),
+};
+#elif SIZEOF_BDIGIT_DBL == 4
+static const int maxpow32_exp[35] = {
+    31, 20, 15, 13, 12, 11, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7,
+    7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+};
+static const uint32_t maxpow32_num[35] = {
+    U32(0x80000000), U32(0xcfd41b91), U32(0x40000000), U32(0x48c27395),
+    U32(0x81bf1000), U32(0x75db9c97), U32(0x40000000), U32(0xcfd41b91),
+    U32(0x3b9aca00), U32(0x8c8b6d2b), U32(0x19a10000), U32(0x309f1021),
+    U32(0x57f6c100), U32(0x98c29b81), U32(0x10000000), U32(0x18754571),
+    U32(0x247dbc80), U32(0x3547667b), U32(0x4c4b4000), U32(0x6b5a6e1d),
+    U32(0x94ace180), U32(0xcaf18367), U32(0x0b640000), U32(0x0e8d4a51),
+    U32(0x1269ae40), U32(0x17179149), U32(0x1cb91000), U32(0x23744899),
+    U32(0x2b73a840), U32(0x34e63b41), U32(0x40000000), U32(0x4cfa3cc1),
+    U32(0x5c13d840), U32(0x6d91b519), U32(0x81bf1000),
+};
+#elif SIZEOF_BDIGIT_DBL == 8 && defined HAVE_UINT64_T
+static const int maxpow64_exp[35] = {
+    63, 40, 31, 27, 24, 22, 21, 20, 19, 18, 17, 17, 16, 16, 15, 15, 15,
+    15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12,
+    12,
+};
+static const uint64_t maxpow64_num[35] = {
+    U64(0x80000000,0x00000000), U64(0xa8b8b452,0x291fe821),
+    U64(0x40000000,0x00000000), U64(0x6765c793,0xfa10079d),
+    U64(0x41c21cb8,0xe1000000), U64(0x36427987,0x50226111),
+    U64(0x80000000,0x00000000), U64(0xa8b8b452,0x291fe821),
+    U64(0x8ac72304,0x89e80000), U64(0x4d28cb56,0xc33fa539),
+    U64(0x1eca170c,0x00000000), U64(0x780c7372,0x621bd74d),
+    U64(0x1e39a505,0x7d810000), U64(0x5b27ac99,0x3df97701),
+    U64(0x10000000,0x00000000), U64(0x27b95e99,0x7e21d9f1),
+    U64(0x5da0e1e5,0x3c5c8000), U64(0xd2ae3299,0xc1c4aedb),
+    U64(0x16bcc41e,0x90000000), U64(0x2d04b7fd,0xd9c0ef49),
+    U64(0x5658597b,0xcaa24000), U64(0xa0e20737,0x37609371),
+    U64(0x0c29e980,0x00000000), U64(0x14adf4b7,0x320334b9),
+    U64(0x226ed364,0x78bfa000), U64(0x383d9170,0xb85ff80b),
+    U64(0x5a3c23e3,0x9c000000), U64(0x8e651373,0x88122bcd),
+    U64(0xdd41bb36,0xd259e000), U64(0x0aee5720,0xee830681),
+    U64(0x10000000,0x00000000), U64(0x172588ad,0x4f5f0981),
+    U64(0x211e44f7,0xd02c1000), U64(0x2ee56725,0xf06e5c71),
+    U64(0x41c21cb8,0xe1000000),
+};
+#elif SIZEOF_BDIGIT_DBL == 16 && defined HAVE_UINT128_T
+static const int maxpow128_exp[35] = {
+    127, 80, 63, 55, 49, 45, 42, 40, 38, 37, 35, 34, 33, 32, 31, 31, 30,
+    30, 29, 29, 28, 28, 27, 27, 27, 26, 26, 26, 26, 25, 25, 25, 25, 24,
+    24,
+};
+static const uint128_t maxpow128_num[35] = {
+    U128(0x80000000,0x00000000,0x00000000,0x00000000),
+    U128(0x6f32f1ef,0x8b18a2bc,0x3cea5978,0x9c79d441),
+    U128(0x40000000,0x00000000,0x00000000,0x00000000),
+    U128(0xd0cf4b50,0xcfe20765,0xfff4b4e3,0xf741cf6d),
+    U128(0x6558e2a0,0x921fe069,0x42860000,0x00000000),
+    U128(0x5080c7b7,0xd0e31ba7,0x5911a67d,0xdd3d35e7),
+    U128(0x40000000,0x00000000,0x00000000,0x00000000),
+    U128(0x6f32f1ef,0x8b18a2bc,0x3cea5978,0x9c79d441),
+    U128(0x4b3b4ca8,0x5a86c47a,0x098a2240,0x00000000),
+    U128(0xffd1390a,0x0adc2fb8,0xdabbb817,0x4d95c99b),
+    U128(0x2c6fdb36,0x4c25e6c0,0x00000000,0x00000000),
+    U128(0x384bacd6,0x42c343b4,0xe90c4272,0x13506d29),
+    U128(0x31f5db32,0xa34aced6,0x0bf13a0e,0x00000000),
+    U128(0x20753ada,0xfd1e839f,0x53686d01,0x3143ee01),
+    U128(0x10000000,0x00000000,0x00000000,0x00000000),
+    U128(0x68ca11d6,0xb4f6d1d1,0xfaa82667,0x8073c2f1),
+    U128(0x223e493b,0xb3bb69ff,0xa4b87d6c,0x40000000),
+    U128(0xad62418d,0x14ea8247,0x01c4b488,0x6cc66f59),
+    U128(0x2863c1f5,0xcdae42f9,0x54000000,0x00000000),
+    U128(0xa63fd833,0xb9386b07,0x36039e82,0xbe651b25),
+    U128(0x1d1f7a9c,0xd087a14d,0x28cdf3d5,0x10000000),
+    U128(0x651b5095,0xc2ea8fc1,0xb30e2c57,0x77aaf7e1),
+    U128(0x0ddef20e,0xff760000,0x00000000,0x00000000),
+    U128(0x29c30f10,0x29939b14,0x6664242d,0x97d9f649),
+    U128(0x786a435a,0xe9558b0e,0x6aaf6d63,0xa8000000),
+    U128(0x0c5afe6f,0xf302bcbf,0x94fd9829,0xd87f5079),
+    U128(0x1fce575c,0xe1692706,0x07100000,0x00000000),
+    U128(0x4f34497c,0x8597e144,0x36e91802,0x00528229),
+    U128(0xbf3a8e1d,0x41ef2170,0x7802130d,0x84000000),
+    U128(0x0e7819e1,0x7f1eb0fb,0x6ee4fb89,0x01d9531f),
+    U128(0x20000000,0x00000000,0x00000000,0x00000000),
+    U128(0x4510460d,0xd9e879c0,0x14a82375,0x2f22b321),
+    U128(0x91abce3c,0x4b4117ad,0xe76d35db,0x22000000),
+    U128(0x08973ea3,0x55d75bc2,0x2e42c391,0x727d69e1),
+    U128(0x10e425c5,0x6daffabc,0x35c10000,0x00000000),
+};
+#endif
+
+static BDIGIT_DBL
+maxpow_in_bdigit_dbl(int base, int *exp_ret)
+{
+    BDIGIT_DBL maxpow;
+    int exponent;
+
+    assert(2 <= base && base <= 36);
+
+    {
+#if SIZEOF_BDIGIT_DBL == 2
+        maxpow = maxpow16_num[base-2];
+        exponent = maxpow16_exp[base-2];
+#elif SIZEOF_BDIGIT_DBL == 4
+        maxpow = maxpow32_num[base-2];
+        exponent = maxpow32_exp[base-2];
+#elif SIZEOF_BDIGIT_DBL == 8 && defined HAVE_UINT64_T
+        maxpow = maxpow64_num[base-2];
+        exponent = maxpow64_exp[base-2];
+#elif SIZEOF_BDIGIT_DBL == 16 && defined HAVE_UINT128_T
+        maxpow = maxpow128_num[base-2];
+        exponent = maxpow128_exp[base-2];
+#else
+        maxpow = base;
+        exponent = 1;
+        while (maxpow <= BDIGIT_DBL_MAX / base) {
+            maxpow *= base;
+            exponent++;
+        }
+#endif
+    }
+
+    *exp_ret = exponent;
+    return maxpow;
+}
+
+static inline BDIGIT_DBL
+bary2bdigitdbl(const BDIGIT *ds, size_t n)
+{
+    assert(n <= 2);
+
+    if (n == 2)
+        return ds[0] | BIGUP(ds[1]);
+    if (n == 1)
+        return ds[0];
+    return 0;
+}
+
+static inline void
+bdigitdbl2bary(BDIGIT *ds, size_t n, BDIGIT_DBL num)
+{
+    assert(n == 2);
+
+    ds[0] = BIGLO(num);
+    ds[1] = (BDIGIT)BIGDN(num);
+}
 
 static int
-bigzero_p(VALUE x)
+bary_cmp(const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
 {
-    long i;
-    for (i = RBIGNUM_LEN(x) - 1; 0 <= i; i--) {
-	if (BDIGITS(x)[i]) return 0;
+    size_t i;
+    BARY_TRUNC(xds, xn);
+    BARY_TRUNC(yds, yn);
+
+    if (xn < yn)
+        return -1;
+    if (xn > yn)
+        return 1;
+
+    for (i = 0; i < xn; i++)
+        if (xds[xn - i - 1] != yds[yn - i - 1])
+            break;
+    if (i == xn)
+        return 0;
+    return xds[xn - i - 1] < yds[yn - i - 1] ? -1 : 1;
+}
+
+static BDIGIT
+bary_small_lshift(BDIGIT *zds, const BDIGIT *xds, size_t n, int shift)
+{
+    size_t i;
+    BDIGIT_DBL num = 0;
+    assert(0 <= shift && shift < BITSPERDIG);
+
+    for (i=0; i<n; i++) {
+	num = num | (BDIGIT_DBL)*xds++ << shift;
+	*zds++ = BIGLO(num);
+	num = BIGDN(num);
+    }
+    return BIGLO(num);
+}
+
+static void
+bary_small_rshift(BDIGIT *zds, const BDIGIT *xds, size_t n, int shift, BDIGIT higher_bdigit)
+{
+    size_t i;
+    BDIGIT_DBL num = 0;
+
+    assert(0 <= shift && shift < BITSPERDIG);
+
+    num = BIGUP(higher_bdigit);
+    for (i = 0; i < n; i++) {
+        BDIGIT x = xds[n - i - 1];
+	num = (num | x) >> shift;
+        zds[n - i - 1] = BIGLO(num);
+	num = BIGUP(x);
+    }
+}
+
+static int
+bary_zero_p(const BDIGIT *xds, size_t xn)
+{
+    if (xn == 0)
+        return 1;
+    do {
+	if (xds[--xn]) return 0;
+    } while (xn);
+    return 1;
+}
+
+static void
+bary_neg(BDIGIT *ds, size_t n)
+{
+    size_t i;
+    for (i = 0; i < n; i++)
+        ds[n - i - 1] = BIGLO(~ds[n - i - 1]);
+}
+
+static int
+bary_2comp(BDIGIT *ds, size_t n)
+{
+    size_t i;
+    i = 0;
+    for (i = 0; i < n; i++) {
+        if (ds[i] != 0) {
+            goto non_zero;
+        }
+    }
+    return 1;
+
+  non_zero:
+    ds[i] = BIGLO(~ds[i] + 1);
+    i++;
+    for (; i < n; i++) {
+        ds[i] = BIGLO(~ds[i]);
+    }
+    return 0;
+}
+
+static void
+bary_swap(BDIGIT *ds, size_t num_bdigits)
+{
+    BDIGIT *p1 = ds;
+    BDIGIT *p2 = ds + num_bdigits - 1;
+    for (; p1 < p2; p1++, p2--) {
+        BDIGIT tmp = *p1;
+        *p1 = *p2;
+        *p2 = tmp;
+    }
+}
+
+#define INTEGER_PACK_WORDORDER_MASK \
+    (INTEGER_PACK_MSWORD_FIRST | \
+     INTEGER_PACK_LSWORD_FIRST)
+#define INTEGER_PACK_BYTEORDER_MASK \
+    (INTEGER_PACK_MSBYTE_FIRST | \
+     INTEGER_PACK_LSBYTE_FIRST | \
+     INTEGER_PACK_NATIVE_BYTE_ORDER)
+
+static void
+validate_integer_pack_format(size_t numwords, size_t wordsize, size_t nails, int flags, int supported_flags)
+{
+    int wordorder_bits = flags & INTEGER_PACK_WORDORDER_MASK;
+    int byteorder_bits = flags & INTEGER_PACK_BYTEORDER_MASK;
+
+    if (flags & ~supported_flags) {
+        rb_raise(rb_eArgError, "unsupported flags specified");
+    }
+    if (wordorder_bits == 0) {
+        if (1 < numwords)
+            rb_raise(rb_eArgError, "word order not specified");
+    }
+    else if (wordorder_bits != INTEGER_PACK_MSWORD_FIRST &&
+        wordorder_bits != INTEGER_PACK_LSWORD_FIRST)
+        rb_raise(rb_eArgError, "unexpected word order");
+    if (byteorder_bits == 0) {
+        rb_raise(rb_eArgError, "byte order not specified");
+    }
+    else if (byteorder_bits != INTEGER_PACK_MSBYTE_FIRST &&
+        byteorder_bits != INTEGER_PACK_LSBYTE_FIRST &&
+        byteorder_bits != INTEGER_PACK_NATIVE_BYTE_ORDER)
+        rb_raise(rb_eArgError, "unexpected byte order");
+    if (wordsize == 0)
+        rb_raise(rb_eArgError, "invalid wordsize: %"PRI_SIZE_PREFIX"u", wordsize);
+    if (SSIZE_MAX < wordsize)
+        rb_raise(rb_eArgError, "too big wordsize: %"PRI_SIZE_PREFIX"u", wordsize);
+    if (wordsize <= nails / CHAR_BIT)
+        rb_raise(rb_eArgError, "too big nails: %"PRI_SIZE_PREFIX"u", nails);
+    if (SIZE_MAX / wordsize < numwords)
+        rb_raise(rb_eArgError, "too big numwords * wordsize: %"PRI_SIZE_PREFIX"u * %"PRI_SIZE_PREFIX"u", numwords, wordsize);
+}
+
+static void
+integer_pack_loop_setup(
+    size_t numwords, size_t wordsize, size_t nails, int flags,
+    size_t *word_num_fullbytes_ret,
+    int *word_num_partialbits_ret,
+    size_t *word_start_ret,
+    ssize_t *word_step_ret,
+    size_t *word_last_ret,
+    size_t *byte_start_ret,
+    int *byte_step_ret)
+{
+    int wordorder_bits = flags & INTEGER_PACK_WORDORDER_MASK;
+    int byteorder_bits = flags & INTEGER_PACK_BYTEORDER_MASK;
+    size_t word_num_fullbytes;
+    int word_num_partialbits;
+    size_t word_start;
+    ssize_t word_step;
+    size_t word_last;
+    size_t byte_start;
+    int byte_step;
+
+    word_num_partialbits = CHAR_BIT - (int)(nails % CHAR_BIT);
+    if (word_num_partialbits == CHAR_BIT)
+        word_num_partialbits = 0;
+    word_num_fullbytes = wordsize - (nails / CHAR_BIT);
+    if (word_num_partialbits != 0) {
+        word_num_fullbytes--;
+    }
+
+    if (wordorder_bits == INTEGER_PACK_MSWORD_FIRST) {
+        word_start = wordsize*(numwords-1);
+        word_step = -(ssize_t)wordsize;
+        word_last = 0;
+    }
+    else {
+        word_start = 0;
+        word_step = wordsize;
+        word_last = wordsize*(numwords-1);
+    }
+
+    if (byteorder_bits == INTEGER_PACK_NATIVE_BYTE_ORDER) {
+#ifdef WORDS_BIGENDIAN
+        byteorder_bits = INTEGER_PACK_MSBYTE_FIRST;
+#else
+        byteorder_bits = INTEGER_PACK_LSBYTE_FIRST;
+#endif
+    }
+    if (byteorder_bits == INTEGER_PACK_MSBYTE_FIRST) {
+        byte_start = wordsize-1;
+        byte_step = -1;
+    }
+    else {
+        byte_start = 0;
+        byte_step = 1;
+    }
+
+    *word_num_partialbits_ret = word_num_partialbits;
+    *word_num_fullbytes_ret = word_num_fullbytes;
+    *word_start_ret = word_start;
+    *word_step_ret = word_step;
+    *word_last_ret = word_last;
+    *byte_start_ret = byte_start;
+    *byte_step_ret = byte_step;
+}
+
+static inline void
+integer_pack_fill_dd(BDIGIT **dpp, BDIGIT **dep, BDIGIT_DBL *ddp, int *numbits_in_dd_p)
+{
+    if (*dpp < *dep && BITSPERDIG <= (int)sizeof(*ddp) * CHAR_BIT - *numbits_in_dd_p) {
+        *ddp |= (BDIGIT_DBL)(*(*dpp)++) << *numbits_in_dd_p;
+        *numbits_in_dd_p += BITSPERDIG;
+    }
+    else if (*dpp == *dep) {
+        /* higher bits are infinity zeros */
+        *numbits_in_dd_p = (int)sizeof(*ddp) * CHAR_BIT;
+    }
+}
+
+static inline BDIGIT_DBL
+integer_pack_take_lowbits(int n, BDIGIT_DBL *ddp, int *numbits_in_dd_p)
+{
+    BDIGIT_DBL ret;
+    ret = (*ddp) & (((BDIGIT_DBL)1 << n) - 1);
+    *ddp >>= n;
+    *numbits_in_dd_p -= n;
+    return ret;
+}
+
+#if !defined(WORDS_BIGENDIAN)
+static int
+bytes_2comp(unsigned char *buf, size_t len)
+{
+    size_t i;
+    for (i = 0; i < len; i++) {
+        signed char c = buf[i];
+        signed int d = ~c;
+        unsigned int e = d & 0xFF;
+        buf[i] = e;
+    }
+    for (i = 0; i < len; i++) {
+        buf[i]++;
+        if (buf[i] != 0)
+            return 0;
+    }
+    return 1;
+}
+#endif
+
+static int
+bary_pack(int sign, BDIGIT *ds, size_t num_bdigits, void *words, size_t numwords, size_t wordsize, size_t nails, int flags)
+{
+    BDIGIT *dp, *de;
+    unsigned char *buf, *bufend;
+
+    dp = ds;
+    de = ds + num_bdigits;
+
+    validate_integer_pack_format(numwords, wordsize, nails, flags,
+            INTEGER_PACK_MSWORD_FIRST|
+            INTEGER_PACK_LSWORD_FIRST|
+            INTEGER_PACK_MSBYTE_FIRST|
+            INTEGER_PACK_LSBYTE_FIRST|
+            INTEGER_PACK_NATIVE_BYTE_ORDER|
+            INTEGER_PACK_2COMP|
+            INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION);
+
+    while (dp < de && de[-1] == 0)
+        de--;
+    if (dp == de) {
+        sign = 0;
+    }
+
+    if (!(flags & INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION)) {
+        if (sign == 0) {
+            MEMZERO(words, unsigned char, numwords * wordsize);
+            return 0;
+        }
+        if (nails == 0 && numwords == 1) {
+            int need_swap = wordsize != 1 &&
+                (flags & INTEGER_PACK_BYTEORDER_MASK) != INTEGER_PACK_NATIVE_BYTE_ORDER &&
+                ((flags & INTEGER_PACK_MSBYTE_FIRST) ? !HOST_BIGENDIAN_P : HOST_BIGENDIAN_P);
+            if (0 < sign || !(flags & INTEGER_PACK_2COMP)) {
+                BDIGIT d;
+                if (wordsize == 1) {
+                    *((unsigned char *)words) = (unsigned char)(d = dp[0]);
+                    return ((1 < de - dp || CLEAR_LOWBITS(d, 8) != 0) ? 2 : 1) * sign;
+                }
+#if defined(HAVE_UINT16_T) && 2 <= SIZEOF_BDIGIT
+                if (wordsize == 2 && (uintptr_t)words % RUBY_ALIGNOF(uint16_t) == 0) {
+                    uint16_t u = (uint16_t)(d = dp[0]);
+                    if (need_swap) u = swap16(u);
+                    *((uint16_t *)words) = u;
+                    return ((1 < de - dp || CLEAR_LOWBITS(d, 16) != 0) ? 2 : 1) * sign;
+                }
+#endif
+#if defined(HAVE_UINT32_T) && 4 <= SIZEOF_BDIGIT
+                if (wordsize == 4 && (uintptr_t)words % RUBY_ALIGNOF(uint32_t) == 0) {
+                    uint32_t u = (uint32_t)(d = dp[0]);
+                    if (need_swap) u = swap32(u);
+                    *((uint32_t *)words) = u;
+                    return ((1 < de - dp || CLEAR_LOWBITS(d, 32) != 0) ? 2 : 1) * sign;
+                }
+#endif
+#if defined(HAVE_UINT64_T) && 8 <= SIZEOF_BDIGIT
+                if (wordsize == 8 && (uintptr_t)words % RUBY_ALIGNOF(uint64_t) == 0) {
+                    uint64_t u = (uint64_t)(d = dp[0]);
+                    if (need_swap) u = swap64(u);
+                    *((uint64_t *)words) = u;
+                    return ((1 < de - dp || CLEAR_LOWBITS(d, 64) != 0) ? 2 : 1) * sign;
+                }
+#endif
+            }
+            else { /* sign < 0 && (flags & INTEGER_PACK_2COMP) */
+                BDIGIT_DBL_SIGNED d;
+                if (wordsize == 1) {
+                    *((unsigned char *)words) = (unsigned char)(d = -(BDIGIT_DBL_SIGNED)dp[0]);
+                    return (1 < de - dp || FILL_LOWBITS(d, 8) != -1) ? -2 : -1;
+                }
+#if defined(HAVE_UINT16_T) && 2 <= SIZEOF_BDIGIT
+                if (wordsize == 2 && (uintptr_t)words % RUBY_ALIGNOF(uint16_t) == 0) {
+                    uint16_t u = (uint16_t)(d = -(BDIGIT_DBL_SIGNED)dp[0]);
+                    if (need_swap) u = swap16(u);
+                    *((uint16_t *)words) = u;
+                    return (wordsize == SIZEOF_BDIGIT && de - dp == 2 && dp[1] == 1 && dp[0] == 0) ? -1 :
+                        (1 < de - dp || FILL_LOWBITS(d, 16) != -1) ? -2 : -1;
+                }
+#endif
+#if defined(HAVE_UINT32_T) && 4 <= SIZEOF_BDIGIT
+                if (wordsize == 4 && (uintptr_t)words % RUBY_ALIGNOF(uint32_t) == 0) {
+                    uint32_t u = (uint32_t)(d = -(BDIGIT_DBL_SIGNED)dp[0]);
+                    if (need_swap) u = swap32(u);
+                    *((uint32_t *)words) = u;
+                    return (wordsize == SIZEOF_BDIGIT && de - dp == 2 && dp[1] == 1 && dp[0] == 0) ? -1 :
+                        (1 < de - dp || FILL_LOWBITS(d, 32) != -1) ? -2 : -1;
+                }
+#endif
+#if defined(HAVE_UINT64_T) && 8 <= SIZEOF_BDIGIT
+                if (wordsize == 8 && (uintptr_t)words % RUBY_ALIGNOF(uint64_t) == 0) {
+                    uint64_t u = (uint64_t)(d = -(BDIGIT_DBL_SIGNED)dp[0]);
+                    if (need_swap) u = swap64(u);
+                    *((uint64_t *)words) = u;
+                    return (wordsize == SIZEOF_BDIGIT && de - dp == 2 && dp[1] == 1 && dp[0] == 0) ? -1 :
+                        (1 < de - dp || FILL_LOWBITS(d, 64) != -1) ? -2 : -1;
+                }
+#endif
+            }
+        }
+#if !defined(WORDS_BIGENDIAN)
+        if (nails == 0 && SIZEOF_BDIGIT == sizeof(BDIGIT) &&
+            (flags & INTEGER_PACK_WORDORDER_MASK) == INTEGER_PACK_LSWORD_FIRST &&
+            (flags & INTEGER_PACK_BYTEORDER_MASK) != INTEGER_PACK_MSBYTE_FIRST) {
+            size_t src_size = (de - dp) * SIZEOF_BDIGIT;
+            size_t dst_size = numwords * wordsize;
+            int overflow = 0;
+            while (0 < src_size && ((unsigned char *)ds)[src_size-1] == 0)
+                src_size--;
+            if (src_size <= dst_size) {
+                MEMCPY(words, dp, char, src_size);
+                MEMZERO((char*)words + src_size, char, dst_size - src_size);
+            }
+            else {
+                MEMCPY(words, dp, char, dst_size);
+                overflow = 1;
+            }
+            if (sign < 0 && (flags & INTEGER_PACK_2COMP)) {
+                int zero_p = bytes_2comp(words, dst_size);
+                if (zero_p && overflow) {
+                    unsigned char *p = (unsigned char *)dp;
+                    if (dst_size == src_size-1 &&
+                        p[dst_size] == 1) {
+                        overflow = 0;
+                    }
+                }
+            }
+            if (overflow)
+                sign *= 2;
+            return sign;
+        }
+#endif
+        if (nails == 0 && SIZEOF_BDIGIT == sizeof(BDIGIT) &&
+            wordsize % SIZEOF_BDIGIT == 0 && (uintptr_t)words % RUBY_ALIGNOF(BDIGIT) == 0) {
+            size_t bdigits_per_word = wordsize / SIZEOF_BDIGIT;
+            size_t src_num_bdigits = de - dp;
+            size_t dst_num_bdigits = numwords * bdigits_per_word;
+            int overflow = 0;
+            int mswordfirst_p = (flags & INTEGER_PACK_MSWORD_FIRST) != 0;
+            int msbytefirst_p = (flags & INTEGER_PACK_NATIVE_BYTE_ORDER) ? HOST_BIGENDIAN_P :
+                (flags & INTEGER_PACK_MSBYTE_FIRST) != 0;
+            if (src_num_bdigits <= dst_num_bdigits) {
+                MEMCPY(words, dp, BDIGIT, src_num_bdigits);
+                BDIGITS_ZERO((BDIGIT*)words + src_num_bdigits, dst_num_bdigits - src_num_bdigits);
+            }
+            else {
+                MEMCPY(words, dp, BDIGIT, dst_num_bdigits);
+                overflow = 1;
+            }
+            if (sign < 0 && (flags & INTEGER_PACK_2COMP)) {
+                int zero_p = bary_2comp(words, dst_num_bdigits);
+                if (zero_p && overflow &&
+                    dst_num_bdigits == src_num_bdigits-1 &&
+                    dp[dst_num_bdigits] == 1)
+                    overflow = 0;
+            }
+            if (msbytefirst_p != HOST_BIGENDIAN_P) {
+                size_t i;
+                for (i = 0; i < dst_num_bdigits; i++) {
+                    BDIGIT d = ((BDIGIT*)words)[i];
+                    ((BDIGIT*)words)[i] = swap_bdigit(d);
+                }
+            }
+            if (mswordfirst_p ? !msbytefirst_p : msbytefirst_p) {
+                size_t i;
+                BDIGIT *p = words;
+                for (i = 0; i < numwords; i++) {
+                    bary_swap(p, bdigits_per_word);
+                    p += bdigits_per_word;
+                }
+            }
+            if (mswordfirst_p) {
+                bary_swap(words, dst_num_bdigits);
+            }
+            if (overflow)
+                sign *= 2;
+            return sign;
+        }
+    }
+
+    buf = words;
+    bufend = buf + numwords * wordsize;
+
+    if (buf == bufend) {
+        /* overflow if non-zero*/
+        if (!(flags & INTEGER_PACK_2COMP) || 0 <= sign)
+            sign *= 2;
+        else {
+            if (de - dp == 1 && dp[0] == 1)
+                sign = -1; /* val == -1 == -2**(numwords*(wordsize*CHAR_BIT-nails)) */
+            else
+                sign = -2; /* val < -1 == -2**(numwords*(wordsize*CHAR_BIT-nails)) */
+        }
+    }
+    else if (dp == de) {
+        memset(buf, '\0', bufend - buf);
+    }
+    else if (dp < de && buf < bufend) {
+        int word_num_partialbits;
+        size_t word_num_fullbytes;
+
+        ssize_t word_step;
+        size_t byte_start;
+        int byte_step;
+
+        size_t word_start, word_last;
+        unsigned char *wordp, *last_wordp;
+        BDIGIT_DBL dd;
+        int numbits_in_dd;
+
+        integer_pack_loop_setup(numwords, wordsize, nails, flags,
+            &word_num_fullbytes, &word_num_partialbits,
+            &word_start, &word_step, &word_last, &byte_start, &byte_step);
+
+        wordp = buf + word_start;
+        last_wordp = buf + word_last;
+
+        dd = 0;
+        numbits_in_dd = 0;
+
+#define FILL_DD \
+    integer_pack_fill_dd(&dp, &de, &dd, &numbits_in_dd)
+#define TAKE_LOWBITS(n) \
+    integer_pack_take_lowbits(n, &dd, &numbits_in_dd)
+
+        while (1) {
+            size_t index_in_word = 0;
+            unsigned char *bytep = wordp + byte_start;
+            while (index_in_word < word_num_fullbytes) {
+                FILL_DD;
+                *bytep = TAKE_LOWBITS(CHAR_BIT);
+                bytep += byte_step;
+                index_in_word++;
+            }
+            if (word_num_partialbits) {
+                FILL_DD;
+                *bytep = TAKE_LOWBITS(word_num_partialbits);
+                bytep += byte_step;
+                index_in_word++;
+            }
+            while (index_in_word < wordsize) {
+                *bytep = 0;
+                bytep += byte_step;
+                index_in_word++;
+            }
+
+            if (wordp == last_wordp)
+                break;
+
+            wordp += word_step;
+        }
+        FILL_DD;
+        /* overflow tests */
+        if (dp != de || 1 < dd) {
+            /* 2**(numwords*(wordsize*CHAR_BIT-nails)+1) <= abs(val) */
+            sign *= 2;
+        }
+        else if (dd == 1) {
+            /* 2**(numwords*(wordsize*CHAR_BIT-nails)) <= abs(val) < 2**(numwords*(wordsize*CHAR_BIT-nails)+1) */
+            if (!(flags & INTEGER_PACK_2COMP) || 0 <= sign)
+                sign *= 2;
+            else { /* overflow_2comp && sign == -1 */
+                /* test lower bits are all zero. */
+                dp = ds;
+                while (dp < de && *dp == 0)
+                    dp++;
+                if (de - dp == 1 && /* only one non-zero word. */
+                    POW2_P(*dp)) /* *dp contains only one bit set. */
+                    sign = -1; /* val == -2**(numwords*(wordsize*CHAR_BIT-nails)) */
+                else
+                    sign = -2; /* val < -2**(numwords*(wordsize*CHAR_BIT-nails)) */
+            }
+        }
+    }
+
+    if ((flags & INTEGER_PACK_2COMP) && (sign < 0 && numwords != 0)) {
+        int word_num_partialbits;
+        size_t word_num_fullbytes;
+
+        ssize_t word_step;
+        size_t byte_start;
+        int byte_step;
+
+        size_t word_start, word_last;
+        unsigned char *wordp, *last_wordp;
+
+        unsigned int partialbits_mask;
+        int carry;
+
+        integer_pack_loop_setup(numwords, wordsize, nails, flags,
+            &word_num_fullbytes, &word_num_partialbits,
+            &word_start, &word_step, &word_last, &byte_start, &byte_step);
+
+        partialbits_mask = (1 << word_num_partialbits) - 1;
+
+        buf = words;
+        wordp = buf + word_start;
+        last_wordp = buf + word_last;
+
+        carry = 1;
+        while (1) {
+            size_t index_in_word = 0;
+            unsigned char *bytep = wordp + byte_start;
+            while (index_in_word < word_num_fullbytes) {
+                carry += (unsigned char)~*bytep;
+                *bytep = (unsigned char)carry;
+                carry >>= CHAR_BIT;
+                bytep += byte_step;
+                index_in_word++;
+            }
+            if (word_num_partialbits) {
+                carry += (*bytep & partialbits_mask) ^ partialbits_mask;
+                *bytep = carry & partialbits_mask;
+                carry >>= word_num_partialbits;
+                bytep += byte_step;
+                index_in_word++;
+            }
+
+            if (wordp == last_wordp)
+                break;
+
+            wordp += word_step;
+        }
+    }
+
+    return sign;
+#undef FILL_DD
+#undef TAKE_LOWBITS
+}
+
+static size_t
+integer_unpack_num_bdigits_small(size_t numwords, size_t wordsize, size_t nails, int *nlp_bits_ret)
+{
+    /* nlp_bits stands for number of leading padding bits */
+    size_t num_bits = (wordsize * CHAR_BIT - nails) * numwords;
+    size_t num_bdigits = (num_bits + BITSPERDIG - 1) / BITSPERDIG;
+    *nlp_bits_ret = (int)(num_bdigits * BITSPERDIG - num_bits);
+    return num_bdigits;
+}
+
+static size_t
+integer_unpack_num_bdigits_generic(size_t numwords, size_t wordsize, size_t nails, int *nlp_bits_ret)
+{
+    /* BITSPERDIG = SIZEOF_BDIGIT * CHAR_BIT */
+    /* num_bits = (wordsize * CHAR_BIT - nails) * numwords */
+    /* num_bdigits = (num_bits + BITSPERDIG - 1) / BITSPERDIG */
+
+    /* num_bits = CHAR_BIT * (wordsize * numwords) - nails * numwords = CHAR_BIT * num_bytes1 - nails * numwords */
+    size_t num_bytes1 = wordsize * numwords;
+
+    /* q1 * CHAR_BIT + r1 = numwords */
+    size_t q1 = numwords / CHAR_BIT;
+    size_t r1 = numwords % CHAR_BIT;
+
+    /* num_bits = CHAR_BIT * num_bytes1 - nails * (q1 * CHAR_BIT + r1) = CHAR_BIT * num_bytes2 - nails * r1 */
+    size_t num_bytes2 = num_bytes1 - nails * q1;
+
+    /* q2 * CHAR_BIT + r2 = nails */
+    size_t q2 = nails / CHAR_BIT;
+    size_t r2 = nails % CHAR_BIT;
+
+    /* num_bits = CHAR_BIT * num_bytes2 - (q2 * CHAR_BIT + r2) * r1 = CHAR_BIT * num_bytes3 - r1 * r2 */
+    size_t num_bytes3 = num_bytes2 - q2 * r1;
+
+    /* q3 * BITSPERDIG + r3 = num_bytes3 */
+    size_t q3 = num_bytes3 / BITSPERDIG;
+    size_t r3 = num_bytes3 % BITSPERDIG;
+
+    /* num_bits = CHAR_BIT * (q3 * BITSPERDIG + r3) - r1 * r2 = BITSPERDIG * num_digits1 + CHAR_BIT * r3 - r1 * r2 */
+    size_t num_digits1 = CHAR_BIT * q3;
+
+    /*
+     * if CHAR_BIT * r3 >= r1 * r2
+     *   CHAR_BIT * r3 - r1 * r2 = CHAR_BIT * BITSPERDIG - (CHAR_BIT * BITSPERDIG - (CHAR_BIT * r3 - r1 * r2))
+     *   q4 * BITSPERDIG + r4 = CHAR_BIT * BITSPERDIG - (CHAR_BIT * r3 - r1 * r2)
+     *   num_bits = BITSPERDIG * num_digits1 + CHAR_BIT * BITSPERDIG - (q4 * BITSPERDIG + r4) = BITSPERDIG * num_digits2 - r4
+     * else
+     *   q4 * BITSPERDIG + r4 = -(CHAR_BIT * r3 - r1 * r2)
+     *   num_bits = BITSPERDIG * num_digits1 - (q4 * BITSPERDIG + r4) = BITSPERDIG * num_digits2 - r4
+     * end
+     */
+
+    if (CHAR_BIT * r3 >= r1 * r2) {
+        size_t tmp1 = CHAR_BIT * BITSPERDIG - (CHAR_BIT * r3 - r1 * r2);
+        size_t q4 = tmp1 / BITSPERDIG;
+        int r4 = (int)(tmp1 % BITSPERDIG);
+        size_t num_digits2 = num_digits1 + CHAR_BIT - q4;
+        *nlp_bits_ret = r4;
+        return num_digits2;
+    }
+    else {
+        size_t tmp1 = r1 * r2 - CHAR_BIT * r3;
+        size_t q4 = tmp1 / BITSPERDIG;
+        int r4 = (int)(tmp1 % BITSPERDIG);
+        size_t num_digits2 = num_digits1 - q4;
+        *nlp_bits_ret = r4;
+        return num_digits2;
+    }
+}
+
+static size_t
+integer_unpack_num_bdigits(size_t numwords, size_t wordsize, size_t nails, int *nlp_bits_ret)
+{
+    size_t num_bdigits;
+
+    if (numwords <= (SIZE_MAX - (BITSPERDIG-1)) / CHAR_BIT / wordsize) {
+        num_bdigits = integer_unpack_num_bdigits_small(numwords, wordsize, nails, nlp_bits_ret);
+#ifdef DEBUG_INTEGER_PACK
+        {
+            int nlp_bits1;
+            size_t num_bdigits1 = integer_unpack_num_bdigits_generic(numwords, wordsize, nails, &nlp_bits1);
+            assert(num_bdigits == num_bdigits1);
+            assert(*nlp_bits_ret == nlp_bits1);
+        }
+#endif
+    }
+    else {
+        num_bdigits = integer_unpack_num_bdigits_generic(numwords, wordsize, nails, nlp_bits_ret);
+    }
+    return num_bdigits;
+}
+
+static inline void
+integer_unpack_push_bits(int data, int numbits, BDIGIT_DBL *ddp, int *numbits_in_dd_p, BDIGIT **dpp)
+{
+    (*ddp) |= ((BDIGIT_DBL)data) << (*numbits_in_dd_p);
+    *numbits_in_dd_p += numbits;
+    while (BITSPERDIG <= *numbits_in_dd_p) {
+        *(*dpp)++ = BIGLO(*ddp);
+        *ddp = BIGDN(*ddp);
+        *numbits_in_dd_p -= BITSPERDIG;
+    }
+}
+
+static int
+integer_unpack_single_bdigit(BDIGIT u, size_t size, int flags, BDIGIT *dp)
+{
+    int sign;
+    if (flags & INTEGER_PACK_2COMP) {
+        sign = (flags & INTEGER_PACK_NEGATIVE) ?
+            ((size == SIZEOF_BDIGIT && u == 0) ? -2 : -1) :
+            ((u >> (size * CHAR_BIT - 1)) ? -1 : 1);
+        if (sign < 0) {
+            u |= LSHIFTX(BDIGMAX, size * CHAR_BIT);
+            u = BIGLO(1 + ~u);
+        }
+    }
+    else
+        sign = (flags & INTEGER_PACK_NEGATIVE) ? -1 : 1;
+    *dp = u;
+    return sign;
+}
+
+#ifdef HAVE_BUILTIN___BUILTIN_ASSUME_ALIGNED
+#define reinterpret_cast(type, value) (type) \
+    __builtin_assume_aligned((value), sizeof(*(type)NULL));
+#else
+#define reinterpret_cast(type, value) (type)value
+#endif
+
+static int
+bary_unpack_internal(BDIGIT *bdigits, size_t num_bdigits, const void *words, size_t numwords, size_t wordsize, size_t nails, int flags, int nlp_bits)
+{
+    int sign;
+    const unsigned char *buf = words;
+    BDIGIT *dp;
+    BDIGIT *de;
+
+    dp = bdigits;
+    de = dp + num_bdigits;
+
+    if (!(flags & INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION)) {
+        if (nails == 0 && numwords == 1) {
+            int need_swap = wordsize != 1 &&
+                (flags & INTEGER_PACK_BYTEORDER_MASK) != INTEGER_PACK_NATIVE_BYTE_ORDER &&
+                ((flags & INTEGER_PACK_MSBYTE_FIRST) ? !HOST_BIGENDIAN_P : HOST_BIGENDIAN_P);
+            if (wordsize == 1) {
+                return integer_unpack_single_bdigit(*(uint8_t *)buf, sizeof(uint8_t), flags, dp);
+            }
+#if defined(HAVE_UINT16_T) && 2 <= SIZEOF_BDIGIT
+            if (wordsize == 2 && (uintptr_t)words % RUBY_ALIGNOF(uint16_t) == 0) {
+                uint16_t u = *reinterpret_cast(const uint16_t *, buf);
+                return integer_unpack_single_bdigit(need_swap ? swap16(u) : u, sizeof(uint16_t), flags, dp);
+            }
+#endif
+#if defined(HAVE_UINT32_T) && 4 <= SIZEOF_BDIGIT
+            if (wordsize == 4 && (uintptr_t)words % RUBY_ALIGNOF(uint32_t) == 0) {
+                uint32_t u = *reinterpret_cast(const uint32_t *, buf);
+                return integer_unpack_single_bdigit(need_swap ? swap32(u) : u, sizeof(uint32_t), flags, dp);
+            }
+#endif
+#if defined(HAVE_UINT64_T) && 8 <= SIZEOF_BDIGIT
+            if (wordsize == 8 && (uintptr_t)words % RUBY_ALIGNOF(uint64_t) == 0) {
+                uint64_t u = *reinterpret_cast(const uint64_t *, buf);
+                return integer_unpack_single_bdigit(need_swap ? swap64(u) : u, sizeof(uint64_t), flags, dp);
+            }
+#endif
+#undef reinterpret_cast
+        }
+#if !defined(WORDS_BIGENDIAN)
+        if (nails == 0 && SIZEOF_BDIGIT == sizeof(BDIGIT) &&
+            (flags & INTEGER_PACK_WORDORDER_MASK) == INTEGER_PACK_LSWORD_FIRST &&
+            (flags & INTEGER_PACK_BYTEORDER_MASK) != INTEGER_PACK_MSBYTE_FIRST) {
+            size_t src_size = numwords * wordsize;
+            size_t dst_size = num_bdigits * SIZEOF_BDIGIT;
+            MEMCPY(dp, words, char, src_size);
+            if (flags & INTEGER_PACK_2COMP) {
+                if (flags & INTEGER_PACK_NEGATIVE) {
+                    int zero_p;
+                    memset((char*)dp + src_size, 0xff, dst_size - src_size);
+                    zero_p = bary_2comp(dp, num_bdigits);
+                    sign = zero_p ? -2 : -1;
+                }
+                else if (buf[src_size-1] >> (CHAR_BIT-1)) {
+                    memset((char*)dp + src_size, 0xff, dst_size - src_size);
+                    bary_2comp(dp, num_bdigits);
+                    sign = -1;
+                }
+                else {
+                    MEMZERO((char*)dp + src_size, char, dst_size - src_size);
+                    sign = 1;
+                }
+            }
+            else {
+                MEMZERO((char*)dp + src_size, char, dst_size - src_size);
+                sign = (flags & INTEGER_PACK_NEGATIVE) ? -1 : 1;
+            }
+            return sign;
+        }
+#endif
+        if (nails == 0 && SIZEOF_BDIGIT == sizeof(BDIGIT) &&
+            wordsize % SIZEOF_BDIGIT == 0) {
+            size_t bdigits_per_word = wordsize / SIZEOF_BDIGIT;
+            int mswordfirst_p = (flags & INTEGER_PACK_MSWORD_FIRST) != 0;
+            int msbytefirst_p = (flags & INTEGER_PACK_NATIVE_BYTE_ORDER) ? HOST_BIGENDIAN_P :
+                (flags & INTEGER_PACK_MSBYTE_FIRST) != 0;
+            MEMCPY(dp, words, BDIGIT, numwords*bdigits_per_word);
+            if (mswordfirst_p) {
+                bary_swap(dp, num_bdigits);
+            }
+            if (mswordfirst_p ? !msbytefirst_p : msbytefirst_p) {
+                size_t i;
+                BDIGIT *p = dp;
+                for (i = 0; i < numwords; i++) {
+                    bary_swap(p, bdigits_per_word);
+                    p += bdigits_per_word;
+                }
+            }
+            if (msbytefirst_p != HOST_BIGENDIAN_P) {
+                BDIGIT *p;
+                for (p = dp; p < de; p++) {
+                    BDIGIT d = *p;
+                    *p = swap_bdigit(d);
+                }
+            }
+            if (flags & INTEGER_PACK_2COMP) {
+                if (flags & INTEGER_PACK_NEGATIVE) {
+                    int zero_p = bary_2comp(dp, num_bdigits);
+                    sign = zero_p ? -2 : -1;
+                }
+                else if (BDIGIT_MSB(de[-1])) {
+                    bary_2comp(dp, num_bdigits);
+                    sign = -1;
+                }
+                else {
+                    sign = 1;
+                }
+            }
+            else {
+                sign = (flags & INTEGER_PACK_NEGATIVE) ? -1 : 1;
+            }
+            return sign;
+        }
+    }
+
+    if (num_bdigits != 0) {
+        int word_num_partialbits;
+        size_t word_num_fullbytes;
+
+        ssize_t word_step;
+        size_t byte_start;
+        int byte_step;
+
+        size_t word_start, word_last;
+        const unsigned char *wordp, *last_wordp;
+        BDIGIT_DBL dd;
+        int numbits_in_dd;
+
+        integer_pack_loop_setup(numwords, wordsize, nails, flags,
+            &word_num_fullbytes, &word_num_partialbits,
+            &word_start, &word_step, &word_last, &byte_start, &byte_step);
+
+        wordp = buf + word_start;
+        last_wordp = buf + word_last;
+
+        dd = 0;
+        numbits_in_dd = 0;
+
+#define PUSH_BITS(data, numbits) \
+        integer_unpack_push_bits(data, numbits, &dd, &numbits_in_dd, &dp)
+
+        while (1) {
+            size_t index_in_word = 0;
+            const unsigned char *bytep = wordp + byte_start;
+            while (index_in_word < word_num_fullbytes) {
+                PUSH_BITS(*bytep, CHAR_BIT);
+                bytep += byte_step;
+                index_in_word++;
+            }
+            if (word_num_partialbits) {
+                PUSH_BITS(*bytep & ((1 << word_num_partialbits) - 1), word_num_partialbits);
+                bytep += byte_step;
+                index_in_word++;
+            }
+
+            if (wordp == last_wordp)
+                break;
+
+            wordp += word_step;
+        }
+        if (dd)
+            *dp++ = (BDIGIT)dd;
+        assert(dp <= de);
+        while (dp < de)
+            *dp++ = 0;
+#undef PUSH_BITS
+    }
+
+    if (!(flags & INTEGER_PACK_2COMP)) {
+        sign = (flags & INTEGER_PACK_NEGATIVE) ? -1 : 1;
+    }
+    else {
+        if (nlp_bits) {
+            if ((flags & INTEGER_PACK_NEGATIVE) ||
+                (bdigits[num_bdigits-1] >> (BITSPERDIG - nlp_bits - 1))) {
+                bdigits[num_bdigits-1] |= BIGLO(BDIGMAX << (BITSPERDIG - nlp_bits));
+                sign = -1;
+            }
+            else {
+                sign = 1;
+            }
+        }
+        else {
+            if (flags & INTEGER_PACK_NEGATIVE) {
+                sign = bary_zero_p(bdigits, num_bdigits) ? -2 : -1;
+            }
+            else {
+                if (num_bdigits != 0 && BDIGIT_MSB(bdigits[num_bdigits-1]))
+                    sign = -1;
+                else
+                    sign = 1;
+            }
+        }
+        if (sign == -1 && num_bdigits != 0) {
+            bary_2comp(bdigits, num_bdigits);
+        }
+    }
+
+    return sign;
+}
+
+static void
+bary_unpack(BDIGIT *bdigits, size_t num_bdigits, const void *words, size_t numwords, size_t wordsize, size_t nails, int flags)
+{
+    size_t num_bdigits0;
+    int nlp_bits;
+    int sign;
+
+    validate_integer_pack_format(numwords, wordsize, nails, flags,
+            INTEGER_PACK_MSWORD_FIRST|
+            INTEGER_PACK_LSWORD_FIRST|
+            INTEGER_PACK_MSBYTE_FIRST|
+            INTEGER_PACK_LSBYTE_FIRST|
+            INTEGER_PACK_NATIVE_BYTE_ORDER|
+            INTEGER_PACK_2COMP|
+            INTEGER_PACK_FORCE_BIGNUM|
+            INTEGER_PACK_NEGATIVE|
+            INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION);
+
+    num_bdigits0 = integer_unpack_num_bdigits(numwords, wordsize, nails, &nlp_bits);
+
+    assert(num_bdigits0 <= num_bdigits);
+
+    sign = bary_unpack_internal(bdigits, num_bdigits0, words, numwords, wordsize, nails, flags, nlp_bits);
+
+    if (num_bdigits0 < num_bdigits) {
+        BDIGITS_ZERO(bdigits + num_bdigits0, num_bdigits - num_bdigits0);
+        if (sign == -2) {
+            bdigits[num_bdigits0] = 1;
+        }
+    }
+}
+
+static int
+bary_subb(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, int borrow)
+{
+    BDIGIT_DBL_SIGNED num;
+    size_t i;
+    size_t sn;
+
+    assert(xn <= zn);
+    assert(yn <= zn);
+
+    sn = xn < yn ? xn : yn;
+
+    num = borrow ? -1 : 0;
+    for (i = 0; i < sn; i++) {
+	num += (BDIGIT_DBL_SIGNED)xds[i] - yds[i];
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
+    }
+    if (yn <= xn) {
+        for (; i < xn; i++) {
+            if (num == 0) goto num_is_zero;
+            num += xds[i];
+            zds[i] = BIGLO(num);
+            num = BIGDN(num);
+        }
+    }
+    else {
+        for (; i < yn; i++) {
+            num -= yds[i];
+            zds[i] = BIGLO(num);
+            num = BIGDN(num);
+        }
+    }
+    if (num == 0) goto num_is_zero;
+    for (; i < zn; i++) {
+	zds[i] = BDIGMAX;
     }
     return 1;
+
+  num_is_zero:
+    if (xds == zds && xn == zn)
+        return 0;
+    for (; i < xn; i++) {
+	zds[i] = xds[i];
+    }
+    for (; i < zn; i++) {
+	zds[i] = 0;
+    }
+    return 0;
+}
+
+static int
+bary_sub(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    return bary_subb(zds, zn, xds, xn, yds, yn, 0);
+}
+
+static int
+bary_sub_one(BDIGIT *zds, size_t zn)
+{
+    return bary_subb(zds, zn, zds, zn, NULL, 0, 1);
+}
+
+static int
+bary_addc(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, int carry)
+{
+    BDIGIT_DBL num;
+    size_t i;
+
+    assert(xn <= zn);
+    assert(yn <= zn);
+
+    if (xn > yn) {
+	const BDIGIT *tds;
+	tds = xds; xds = yds; yds = tds;
+	i = xn; xn = yn; yn = i;
+    }
+
+    num = carry ? 1 : 0;
+    for (i = 0; i < xn; i++) {
+	num += (BDIGIT_DBL)xds[i] + yds[i];
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
+    }
+    for (; i < yn; i++) {
+        if (num == 0) goto num_is_zero;
+	num += yds[i];
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
+    }
+    for (; i < zn; i++) {
+        if (num == 0) goto num_is_zero;
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
+    }
+    return num != 0;
+
+  num_is_zero:
+    if (yds == zds && yn == zn)
+        return 0;
+    for (; i < yn; i++) {
+	zds[i] = yds[i];
+    }
+    for (; i < zn; i++) {
+	zds[i] = 0;
+    }
+    return 0;
+}
+
+static int
+bary_add(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    return bary_addc(zds, zn, xds, xn, yds, yn, 0);
+}
+
+static int
+bary_add_one(BDIGIT *ds, size_t n)
+{
+    size_t i;
+    for (i = 0; i < n; i++) {
+        BDIGIT_DBL n = ds[i];
+        n += 1;
+        ds[i] = BIGLO(n);
+        if (ds[i] != 0)
+            return 0;
+    }
+    return 1;
+}
+
+static void
+bary_mul_single(BDIGIT *zds, size_t zn, BDIGIT x, BDIGIT y)
+{
+    BDIGIT_DBL n;
+
+    assert(2 <= zn);
+
+    n = (BDIGIT_DBL)x * y;
+    bdigitdbl2bary(zds, 2, n);
+    BDIGITS_ZERO(zds + 2, zn - 2);
+}
+
+static int
+bary_muladd_1xN(BDIGIT *zds, size_t zn, BDIGIT x, const BDIGIT *yds, size_t yn)
+{
+    BDIGIT_DBL n;
+    BDIGIT_DBL dd;
+    size_t j;
+
+    assert(zn > yn);
+
+    if (x == 0)
+        return 0;
+    dd = x;
+    n = 0;
+    for (j = 0; j < yn; j++) {
+        BDIGIT_DBL ee = n + dd * yds[j];
+        if (ee) {
+            n = zds[j] + ee;
+            zds[j] = BIGLO(n);
+            n = BIGDN(n);
+        }
+        else {
+            n = 0;
+        }
+
+    }
+    for (; j < zn; j++) {
+        if (n == 0)
+            break;
+        n += zds[j];
+        zds[j] = BIGLO(n);
+        n = BIGDN(n);
+    }
+    return n != 0;
+}
+
+static BDIGIT_DBL_SIGNED
+bigdivrem_mulsub(BDIGIT *zds, size_t zn, BDIGIT x, const BDIGIT *yds, size_t yn)
+{
+    size_t i;
+    BDIGIT_DBL t2;
+    BDIGIT_DBL_SIGNED num;
+
+    assert(zn == yn + 1);
+
+    num = 0;
+    t2 = 0;
+    i = 0;
+
+    do {
+        BDIGIT_DBL_SIGNED ee;
+        t2 += (BDIGIT_DBL)yds[i] * x;
+        ee = num - BIGLO(t2);
+        num = (BDIGIT_DBL_SIGNED)zds[i] + ee;
+        if (ee) zds[i] = BIGLO(num);
+        num = BIGDN(num);
+        t2 = BIGDN(t2);
+    } while (++i < yn);
+    num -= (BDIGIT_DBL_SIGNED)t2;
+    num += (BDIGIT_DBL_SIGNED)zds[yn]; /* borrow from high digit; don't update */
+    return num;
+}
+
+static int
+bary_mulsub_1xN(BDIGIT *zds, size_t zn, BDIGIT x, const BDIGIT *yds, size_t yn)
+{
+    BDIGIT_DBL_SIGNED num;
+
+    assert(zn == yn + 1);
+
+    num = bigdivrem_mulsub(zds, zn, x, yds, yn);
+    zds[yn] = BIGLO(num);
+    if (BIGDN(num))
+        return 1;
+    return 0;
+}
+
+static void
+bary_mul_normal(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    size_t i;
+
+    assert(xn + yn <= zn);
+
+    BDIGITS_ZERO(zds, zn);
+    for (i = 0; i < xn; i++) {
+        bary_muladd_1xN(zds+i, zn-i, xds[i], yds, yn);
+    }
+}
+
+VALUE
+rb_big_mul_normal(VALUE x, VALUE y)
+{
+    size_t xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y), zn = xn + yn;
+    VALUE z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+    bary_mul_normal(BDIGITS(z), zn, BDIGITS(x), xn, BDIGITS(y), yn);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    return z;
+}
+
+/* efficient squaring (2 times faster than normal multiplication)
+ * ref: Handbook of Applied Cryptography, Algorithm 14.16
+ *      http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf
+ */
+static void
+bary_sq_fast(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn)
+{
+    size_t i, j;
+    BDIGIT_DBL c, v, w;
+    BDIGIT vl;
+    int vh;
+
+    assert(xn * 2 <= zn);
+
+    BDIGITS_ZERO(zds, zn);
+
+    if (xn == 0)
+        return;
+
+    for (i = 0; i < xn-1; i++) {
+	v = (BDIGIT_DBL)xds[i];
+	if (!v)
+            continue;
+	c = (BDIGIT_DBL)zds[i + i] + v * v;
+	zds[i + i] = BIGLO(c);
+	c = BIGDN(c);
+	v *= 2;
+        vl = BIGLO(v);
+        vh = (int)BIGDN(v);
+	for (j = i + 1; j < xn; j++) {
+	    w = (BDIGIT_DBL)xds[j];
+	    c += (BDIGIT_DBL)zds[i + j] + vl * w;
+	    zds[i + j] = BIGLO(c);
+	    c = BIGDN(c);
+	    if (vh)
+                c += w;
+	}
+	if (c) {
+	    c += (BDIGIT_DBL)zds[i + xn];
+	    zds[i + xn] = BIGLO(c);
+	    c = BIGDN(c);
+            if (c)
+                zds[i + xn + 1] += (BDIGIT)c;
+	}
+    }
+
+    /* i == xn-1 */
+    v = (BDIGIT_DBL)xds[i];
+    if (!v)
+        return;
+    c = (BDIGIT_DBL)zds[i + i] + v * v;
+    zds[i + i] = BIGLO(c);
+    c = BIGDN(c);
+    if (c) {
+        zds[i + xn] += BIGLO(c);
+    }
+}
+
+VALUE
+rb_big_sq_fast(VALUE x)
+{
+    size_t xn = BIGNUM_LEN(x), zn = 2 * xn;
+    VALUE z = bignew(zn, 1);
+    bary_sq_fast(BDIGITS(z), zn, BDIGITS(x), xn);
+    RB_GC_GUARD(x);
+    return z;
+}
+
+/* balancing multiplication by slicing larger argument */
+static void
+bary_mul_balance_with_mulfunc(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn, mulfunc_t *mulfunc)
+{
+    VALUE work = 0;
+    size_t yn0 = yn;
+    size_t r, n;
+
+    assert(xn + yn <= zn);
+    assert(xn <= yn);
+    assert(!KARATSUBA_BALANCED(xn, yn) || !TOOM3_BALANCED(xn, yn));
+
+    BDIGITS_ZERO(zds, xn);
+
+    n = 0;
+    while (yn > 0) {
+        BDIGIT *tds;
+        size_t tn;
+	r = xn > yn ? yn : xn;
+        tn = xn + r;
+        if (2 * (xn + r) <= zn - n) {
+            tds = zds + n + xn + r;
+            mulfunc(tds, tn, xds, xn, yds + n, r, wds, wn);
+            BDIGITS_ZERO(zds + n + xn, r);
+            bary_add(zds + n, tn,
+                     zds + n, tn,
+                     tds, tn);
+        }
+        else {
+            if (wn < xn) {
+                wn = xn;
+                wds = ALLOCV_N(BDIGIT, work, wn);
+            }
+            tds = zds + n;
+            MEMCPY(wds, zds + n, BDIGIT, xn);
+            mulfunc(tds, tn, xds, xn, yds + n, r, wds+xn, wn-xn);
+            bary_add(zds + n, tn,
+                     zds + n, tn,
+                     wds, xn);
+        }
+	yn -= r;
+	n += r;
+    }
+    BDIGITS_ZERO(zds+xn+yn0, zn - (xn+yn0));
+
+    if (work)
+        ALLOCV_END(work);
+}
+
+VALUE
+rb_big_mul_balance(VALUE x, VALUE y)
+{
+    size_t xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y), zn = xn + yn;
+    VALUE z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+    bary_mul_balance_with_mulfunc(BDIGITS(z), zn, BDIGITS(x), xn, BDIGITS(y), yn, NULL, 0, bary_mul_toom3_start);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    return z;
+}
+
+/* multiplication by karatsuba method */
+static void
+bary_mul_karatsuba(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn)
+{
+    VALUE work = 0;
+
+    size_t n;
+    int sub_p, borrow, carry1, carry2, carry3;
+
+    int odd_y = 0;
+    int odd_xy = 0;
+    int sq;
+
+    const BDIGIT *xds0, *xds1, *yds0, *yds1;
+    BDIGIT *zds0, *zds1, *zds2, *zds3;
+
+    assert(xn + yn <= zn);
+    assert(xn <= yn);
+    assert(yn < 2 * xn);
+
+    sq = xds == yds && xn == yn;
+
+    if (yn & 1) {
+        odd_y = 1;
+        yn--;
+        if (yn < xn) {
+            odd_xy = 1;
+            xn--;
+        }
+    }
+
+    n = yn / 2;
+
+    assert(n < xn);
+
+    if (wn < n) {
+        /* This function itself needs only n BDIGITs for work area.
+         * However this function calls bary_mul_karatsuba and
+         * bary_mul_balance recursively.
+         * 2n BDIGITs are enough to avoid allocations in
+         * the recursively called functions.
+         */
+        wn = 2*n;
+        wds = ALLOCV_N(BDIGIT, work, wn);
+    }
+
+    /* Karatsuba algorithm:
+     *
+     * x = x0 + r*x1
+     * y = y0 + r*y1
+     * z = x*y
+     *   = (x0 + r*x1) * (y0 + r*y1)
+     *   = x0*y0 + r*(x1*y0 + x0*y1) + r*r*x1*y1
+     *   = x0*y0 + r*(x0*y0 + x1*y1 - (x1-x0)*(y1-y0)) + r*r*x1*y1
+     *   = x0*y0 + r*(x0*y0 + x1*y1 - (x0-x1)*(y0-y1)) + r*r*x1*y1
+     */
+
+    xds0 = xds;
+    xds1 = xds + n;
+    yds0 = yds;
+    yds1 = yds + n;
+    zds0 = zds;
+    zds1 = zds + n;
+    zds2 = zds + 2*n;
+    zds3 = zds + 3*n;
+
+    sub_p = 1;
+
+    /* zds0:? zds1:? zds2:? zds3:? wds:? */
+
+    if (bary_sub(zds0, n, xds, n, xds+n, xn-n)) {
+        bary_2comp(zds0, n);
+        sub_p = !sub_p;
+    }
+
+    /* zds0:|x1-x0| zds1:? zds2:? zds3:? wds:? */
+
+    if (sq) {
+        sub_p = 1;
+        bary_mul_karatsuba_start(zds1, 2*n, zds0, n, zds0, n, wds, wn);
+    }
+    else {
+        if (bary_sub(wds, n, yds, n, yds+n, n)) {
+            bary_2comp(wds, n);
+            sub_p = !sub_p;
+        }
+
+        /* zds0:|x1-x0| zds1:? zds2:? zds3:? wds:|y1-y0| */
+
+        bary_mul_karatsuba_start(zds1, 2*n, zds0, n, wds, n, wds+n, wn-n);
+    }
+
+    /* zds0:|x1-x0| zds1,zds2:|x1-x0|*|y1-y0| zds3:? wds:|y1-y0| */
+
+    borrow = 0;
+    if (sub_p) {
+        borrow = !bary_2comp(zds1, 2*n);
+    }
+    /* zds0:|x1-x0| zds1,zds2:-?|x1-x0|*|y1-y0| zds3:? wds:|y1-y0| */
+
+    MEMCPY(wds, zds1, BDIGIT, n);
+
+    /* zds0:|x1-x0| zds1,zds2:-?|x1-x0|*|y1-y0| zds3:? wds:lo(-?|x1-x0|*|y1-y0|) */
+
+    bary_mul_karatsuba_start(zds0, 2*n, xds0, n, yds0, n, wds+n, wn-n);
+
+    /* zds0,zds1:x0*y0 zds2:hi(-?|x1-x0|*|y1-y0|) zds3:? wds:lo(-?|x1-x0|*|y1-y0|) */
+
+    carry1 = bary_add(wds, n, wds, n, zds0, n);
+    carry1 = bary_addc(zds2, n, zds2, n, zds1, n, carry1);
+
+    /* zds0,zds1:x0*y0 zds2:hi(x0*y0-?|x1-x0|*|y1-y0|) zds3:? wds:lo(x0*y0-?|x1-x0|*|y1-y0|) */
+
+    carry2 = bary_add(zds1, n, zds1, n, wds, n);
+
+    /* zds0:lo(x0*y0) zds1:hi(x0*y0)+lo(x0*y0-?|x1-x0|*|y1-y0|) zds2:hi(x0*y0-?|x1-x0|*|y1-y0|) zds3:? wds:lo(x0*y0-?|x1-x0|*|y1-y0|) */
+
+    MEMCPY(wds, zds2, BDIGIT, n);
+
+    /* zds0:lo(x0*y0) zds1:hi(x0*y0)+lo(x0*y0-?|x1-x0|*|y1-y0|) zds2:_ zds3:? wds:hi(x0*y0-?|x1-x0|*|y1-y0|) */
+
+    bary_mul_karatsuba_start(zds2, zn-2*n, xds1, xn-n, yds1, n, wds+n, wn-n);
+
+    /* zds0:lo(x0*y0) zds1:hi(x0*y0)+lo(x0*y0-?|x1-x0|*|y1-y0|) zds2,zds3:x1*y1 wds:hi(x0*y0-?|x1-x0|*|y1-y0|) */
+
+    carry3 = bary_add(zds1, n, zds1, n, zds2, n);
+
+    /* zds0:lo(x0*y0) zds1:hi(x0*y0)+lo(x0*y0-?|x1-x0|*|y1-y0|)+lo(x1*y1) zds2,zds3:x1*y1 wds:hi(x0*y0-?|x1-x0|*|y1-y0|) */
+
+    carry3 = bary_addc(zds2, n, zds2, n, zds3, (4*n < zn ? n : zn-3*n), carry3);
+
+    /* zds0:lo(x0*y0) zds1:hi(x0*y0)+lo(x0*y0-?|x1-x0|*|y1-y0|)+lo(x1*y1) zds2,zds3:x1*y1+hi(x1*y1) wds:hi(x0*y0-?|x1-x0|*|y1-y0|) */
+
+    bary_add(zds2, zn-2*n, zds2, zn-2*n, wds, n);
+
+    /* zds0:lo(x0*y0) zds1:hi(x0*y0)+lo(x0*y0-?|x1-x0|*|y1-y0|)+lo(x1*y1) zds2,zds3:x1*y1+hi(x1*y1)+hi(x0*y0-?|x1-x0|*|y1-y0|) wds:_ */
+
+    if (carry2)
+        bary_add_one(zds2, zn-2*n);
+
+    if (carry1 + carry3 - borrow < 0)
+        bary_sub_one(zds3, zn-3*n);
+    else if (carry1 + carry3 - borrow > 0) {
+        BDIGIT c = carry1 + carry3 - borrow;
+        bary_add(zds3, zn-3*n, zds3, zn-3*n, &c, 1);
+    }
+
+    /*
+    if (SIZEOF_BDIGIT * zn <= 16) {
+        uint128_t z, x, y;
+        ssize_t i;
+        for (x = 0, i = xn-1; 0 <= i; i--) { x <<= SIZEOF_BDIGIT*CHAR_BIT; x |= xds[i]; }
+        for (y = 0, i = yn-1; 0 <= i; i--) { y <<= SIZEOF_BDIGIT*CHAR_BIT; y |= yds[i]; }
+        for (z = 0, i = zn-1; 0 <= i; i--) { z <<= SIZEOF_BDIGIT*CHAR_BIT; z |= zds[i]; }
+        assert(z == x * y);
+    }
+    */
+
+    if (odd_xy) {
+        bary_muladd_1xN(zds+yn, zn-yn, yds[yn], xds, xn);
+        bary_muladd_1xN(zds+xn, zn-xn, xds[xn], yds, yn+1);
+    }
+    else if (odd_y) {
+        bary_muladd_1xN(zds+yn, zn-yn, yds[yn], xds, xn);
+    }
+
+    if (work)
+        ALLOCV_END(work);
+}
+
+VALUE
+rb_big_mul_karatsuba(VALUE x, VALUE y)
+{
+    size_t xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y), zn = xn + yn;
+    VALUE z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+    if (!((xn <= yn && yn < 2) || KARATSUBA_BALANCED(xn, yn)))
+        rb_raise(rb_eArgError, "unexpected bignum length for karatsuba");
+    bary_mul_karatsuba(BDIGITS(z), zn, BDIGITS(x), xn, BDIGITS(y), yn, NULL, 0);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    return z;
+}
+
+static void
+bary_mul_toom3(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn)
+{
+    size_t n;
+    size_t wnc;
+    VALUE work = 0;
+
+    /* "p" stands for "positive".  Actually it means "non-negative", though. */
+    size_t x0n; const BDIGIT *x0ds;
+    size_t x1n; const BDIGIT *x1ds;
+    size_t x2n; const BDIGIT *x2ds;
+    size_t y0n; const BDIGIT *y0ds;
+    size_t y1n; const BDIGIT *y1ds;
+    size_t y2n; const BDIGIT *y2ds;
+
+    size_t u1n; BDIGIT *u1ds; int u1p;
+    size_t u2n; BDIGIT *u2ds; int u2p;
+    size_t u3n; BDIGIT *u3ds; int u3p;
+
+    size_t v1n; BDIGIT *v1ds; int v1p;
+    size_t v2n; BDIGIT *v2ds; int v2p;
+    size_t v3n; BDIGIT *v3ds; int v3p;
+
+    size_t t0n; BDIGIT *t0ds; int t0p;
+    size_t t1n; BDIGIT *t1ds; int t1p;
+    size_t t2n; BDIGIT *t2ds; int t2p;
+    size_t t3n; BDIGIT *t3ds; int t3p;
+    size_t t4n; BDIGIT *t4ds; int t4p;
+
+    size_t z0n; BDIGIT *z0ds;
+    size_t z1n; BDIGIT *z1ds; int z1p;
+    size_t z2n; BDIGIT *z2ds; int z2p;
+    size_t z3n; BDIGIT *z3ds; int z3p;
+    size_t z4n; BDIGIT *z4ds;
+
+    size_t zzn; BDIGIT *zzds;
+
+    int sq = xds == yds && xn == yn;
+
+    assert(xn <= yn);  /* assume y >= x */
+    assert(xn + yn <= zn);
+
+    n = (yn + 2) / 3;
+    assert(2*n < xn);
+
+    wnc = 0;
+
+    wnc += (u1n = n+1); /* BITSPERDIG*n+2 bits */
+    wnc += (u2n = n+1); /* BITSPERDIG*n+1 bits */
+    wnc += (u3n = n+1); /* BITSPERDIG*n+3 bits */
+    wnc += (v1n = n+1); /* BITSPERDIG*n+2 bits */
+    wnc += (v2n = n+1); /* BITSPERDIG*n+1 bits */
+    wnc += (v3n = n+1); /* BITSPERDIG*n+3 bits */
+
+    wnc += (t0n = 2*n); /* BITSPERDIG*2*n bits */
+    wnc += (t1n = 2*n+2); /* BITSPERDIG*2*n+4 bits but bary_mul needs u1n+v1n */
+    wnc += (t2n = 2*n+2); /* BITSPERDIG*2*n+2 bits but bary_mul needs u2n+v2n */
+    wnc += (t3n = 2*n+2); /* BITSPERDIG*2*n+6 bits but bary_mul needs u3n+v3n */
+    wnc += (t4n = 2*n); /* BITSPERDIG*2*n bits */
+
+    wnc += (z1n = 2*n+1); /* BITSPERDIG*2*n+5 bits */
+    wnc += (z2n = 2*n+1); /* BITSPERDIG*2*n+6 bits */
+    wnc += (z3n = 2*n+1); /* BITSPERDIG*2*n+8 bits */
+
+    if (wn < wnc) {
+        wn = wnc * 3 / 2; /* Allocate working memory for whole recursion at once. */
+        wds = ALLOCV_N(BDIGIT, work, wn);
+    }
+
+    u1ds = wds; wds += u1n;
+    u2ds = wds; wds += u2n;
+    u3ds = wds; wds += u3n;
+
+    v1ds = wds; wds += v1n;
+    v2ds = wds; wds += v2n;
+    v3ds = wds; wds += v3n;
+
+    t0ds = wds; wds += t0n;
+    t1ds = wds; wds += t1n;
+    t2ds = wds; wds += t2n;
+    t3ds = wds; wds += t3n;
+    t4ds = wds; wds += t4n;
+
+    z1ds = wds; wds += z1n;
+    z2ds = wds; wds += z2n;
+    z3ds = wds; wds += z3n;
+
+    wn -= wnc;
+
+    zzds = u1ds;
+    zzn = 6*n+1;
+
+    x0n = n;
+    x1n = n;
+    x2n = xn - 2*n;
+    x0ds = xds;
+    x1ds = xds + n;
+    x2ds = xds + 2*n;
+
+    if (sq) {
+        y0n = x0n;
+        y1n = x1n;
+        y2n = x2n;
+        y0ds = x0ds;
+        y1ds = x1ds;
+        y2ds = x2ds;
+    }
+    else {
+        y0n = n;
+        y1n = n;
+        y2n = yn - 2*n;
+        y0ds = yds;
+        y1ds = yds + n;
+        y2ds = yds + 2*n;
+    }
+
+    /*
+     * ref. https://en.wikipedia.org/wiki/Toom%E2%80%93Cook_multiplication
+     *
+     * x(b) = x0 * b^0 + x1 * b^1 + x2 * b^2
+     * y(b) = y0 * b^0 + y1 * b^1 + y2 * b^2
+     *
+     * z(b) = x(b) * y(b)
+     * z(b) = z0 * b^0 + z1 * b^1 + z2 * b^2 + z3 * b^3 + z4 * b^4
+     * where:
+     *   z0 = x0 * y0
+     *   z1 = x0 * y1 + x1 * y0
+     *   z2 = x0 * y2 + x1 * y1 + x2 * y0
+     *   z3 = x1 * y2 + x2 * y1
+     *   z4 = x2 * y2
+     *
+     * Toom3 method (a.k.a. Toom-Cook method):
+     * (Step1) calculating 5 points z(b0), z(b1), z(b2), z(b3), z(b4),
+     * where:
+     *   b0 = 0, b1 = 1, b2 = -1, b3 = -2, b4 = inf,
+     *   z(0)   = x(0)   * y(0)   = x0 * y0
+     *   z(1)   = x(1)   * y(1)   = (x0 + x1 + x2) * (y0 + y1 + y2)
+     *   z(-1)  = x(-1)  * y(-1)  = (x0 - x1 + x2) * (y0 - y1 + y2)
+     *   z(-2)  = x(-2)  * y(-2)  = (x0 - 2 * (x1 - 2 * x2)) * (y0 - 2 * (y1 - 2 * y2))
+     *   z(inf) = x(inf) * y(inf) = x2 * y2
+     *
+     * (Step2) interpolating z0, z1, z2, z3 and z4.
+     *
+     * (Step3) Substituting base value into b of the polynomial z(b),
+     */
+
+    /*
+     * [Step1] calculating 5 points z(b0), z(b1), z(b2), z(b3), z(b4)
+     */
+
+    /* u1 <- x0 + x2 */
+    bary_add(u1ds, u1n, x0ds, x0n, x2ds, x2n);
+    u1p = 1;
+
+    /* x(-1) : u2 <- u1 - x1 = x0 - x1 + x2 */
+    if (bary_sub(u2ds, u2n, u1ds, u1n, x1ds, x1n)) {
+        bary_2comp(u2ds, u2n);
+        u2p = 0;
+    }
+    else {
+        u2p = 1;
+    }
+
+    /* x(1) : u1 <- u1 + x1 = x0 + x1 + x2 */
+    bary_add(u1ds, u1n, u1ds, u1n, x1ds, x1n);
+
+    /* x(-2) : u3 <- 2 * (u2 + x2) - x0 = x0 - 2 * (x1 - 2 * x2) */
+    u3p = 1;
+    if (u2p) {
+        bary_add(u3ds, u3n, u2ds, u2n, x2ds, x2n);
+    }
+    else if (bary_sub(u3ds, u3n, x2ds, x2n, u2ds, u2n)) {
+        bary_2comp(u3ds, u3n);
+        u3p = 0;
+    }
+    bary_small_lshift(u3ds, u3ds, u3n, 1);
+    if (!u3p) {
+        bary_add(u3ds, u3n, u3ds, u3n, x0ds, x0n);
+    }
+    else if (bary_sub(u3ds, u3n, u3ds, u3n, x0ds, x0n)) {
+        bary_2comp(u3ds, u3n);
+        u3p = 0;
+    }
+
+    if (sq) {
+        v1n = u1n; v1ds = u1ds; v1p = u1p;
+        v2n = u2n; v2ds = u2ds; v2p = u2p;
+        v3n = u3n; v3ds = u3ds; v3p = u3p;
+    }
+    else {
+	/* v1 <- y0 + y2 */
+        bary_add(v1ds, v1n, y0ds, y0n, y2ds, y2n);
+        v1p = 1;
+
+	/* y(-1) : v2 <- v1 - y1 = y0 - y1 + y2 */
+        v2p = 1;
+        if (bary_sub(v2ds, v2n, v1ds, v1n, y1ds, y1n)) {
+            bary_2comp(v2ds, v2n);
+            v2p = 0;
+        }
+
+	/* y(1) : v1 <- v1 + y1 = y0 + y1 + y2 */
+        bary_add(v1ds, v1n, v1ds, v1n, y1ds, y1n);
+
+	/* y(-2) : v3 <- 2 * (v2 + y2) - y0 = y0 - 2 * (y1 - 2 * y2) */
+        v3p = 1;
+        if (v2p) {
+            bary_add(v3ds, v3n, v2ds, v2n, y2ds, y2n);
+        }
+        else if (bary_sub(v3ds, v3n, y2ds, y2n, v2ds, v2n)) {
+            bary_2comp(v3ds, v3n);
+            v3p = 0;
+        }
+        bary_small_lshift(v3ds, v3ds, v3n, 1);
+        if (!v3p) {
+            bary_add(v3ds, v3n, v3ds, v3n, y0ds, y0n);
+        }
+        else if (bary_sub(v3ds, v3n, v3ds, v3n, y0ds, y0n)) {
+            bary_2comp(v3ds, v3n);
+            v3p = 0;
+        }
+    }
+
+    /* z(0) : t0 <- x0 * y0 */
+    bary_mul_toom3_start(t0ds, t0n, x0ds, x0n, y0ds, y0n, wds, wn);
+    t0p = 1;
+
+    /* z(1) : t1 <- u1 * v1 */
+    bary_mul_toom3_start(t1ds, t1n, u1ds, u1n, v1ds, v1n, wds, wn);
+    t1p = u1p == v1p;
+    assert(t1ds[t1n-1] == 0);
+    t1n--;
+
+    /* z(-1) : t2 <- u2 * v2 */
+    bary_mul_toom3_start(t2ds, t2n, u2ds, u2n, v2ds, v2n, wds, wn);
+    t2p = u2p == v2p;
+    assert(t2ds[t2n-1] == 0);
+    t2n--;
+
+    /* z(-2) : t3 <- u3 * v3 */
+    bary_mul_toom3_start(t3ds, t3n, u3ds, u3n, v3ds, v3n, wds, wn);
+    t3p = u3p == v3p;
+    assert(t3ds[t3n-1] == 0);
+    t3n--;
+
+    /* z(inf) : t4 <- x2 * y2 */
+    bary_mul_toom3_start(t4ds, t4n, x2ds, x2n, y2ds, y2n, wds, wn);
+    t4p = 1;
+
+    /*
+     * [Step2] interpolating z0, z1, z2, z3 and z4.
+     */
+
+    /* z0 <- z(0) == t0 */
+    z0n = t0n; z0ds = t0ds;
+
+    /* z4 <- z(inf) == t4 */
+    z4n = t4n; z4ds = t4ds;
+
+    /* z3 <- (z(-2) - z(1)) / 3 == (t3 - t1) / 3 */
+    if (t3p == t1p) {
+        z3p = t3p;
+        if (bary_sub(z3ds, z3n, t3ds, t3n, t1ds, t1n)) {
+            bary_2comp(z3ds, z3n);
+            z3p = !z3p;
+        }
+    }
+    else {
+        z3p = t3p;
+        bary_add(z3ds, z3n, t3ds, t3n, t1ds, t1n);
+    }
+    bigdivrem_single(z3ds, z3ds, z3n, 3);
+
+    /* z1 <- (z(1) - z(-1)) / 2 == (t1 - t2) / 2 */
+    if (t1p == t2p) {
+        z1p = t1p;
+        if (bary_sub(z1ds, z1n, t1ds, t1n, t2ds, t2n)) {
+            bary_2comp(z1ds, z1n);
+            z1p = !z1p;
+        }
+    }
+    else {
+        z1p = t1p;
+        bary_add(z1ds, z1n, t1ds, t1n, t2ds, t2n);
+    }
+    bary_small_rshift(z1ds, z1ds, z1n, 1, 0);
+
+    /* z2 <- z(-1) - z(0) == t2 - t0 */
+    if (t2p == t0p) {
+        z2p = t2p;
+        if (bary_sub(z2ds, z2n, t2ds, t2n, t0ds, t0n)) {
+            bary_2comp(z2ds, z2n);
+            z2p = !z2p;
+        }
+    }
+    else {
+        z2p = t2p;
+        bary_add(z2ds, z2n, t2ds, t2n, t0ds, t0n);
+    }
+
+    /* z3 <- (z2 - z3) / 2 + 2 * z(inf) == (z2 - z3) / 2 + 2 * t4 */
+    if (z2p == z3p) {
+        z3p = z2p;
+        if (bary_sub(z3ds, z3n, z2ds, z2n, z3ds, z3n)) {
+            bary_2comp(z3ds, z3n);
+            z3p = !z3p;
+        }
+    }
+    else {
+        z3p = z2p;
+        bary_add(z3ds, z3n, z2ds, z2n, z3ds, z3n);
+    }
+    bary_small_rshift(z3ds, z3ds, z3n, 1, 0);
+    if (z3p == t4p) {
+        bary_muladd_1xN(z3ds, z3n, 2, t4ds, t4n);
+    }
+    else {
+        if (bary_mulsub_1xN(z3ds, z3n, 2, t4ds, t4n)) {
+            bary_2comp(z3ds, z3n);
+            z3p = !z3p;
+        }
+    }
+
+    /* z2 <- z2 + z1 - z(inf) == z2 + z1 - t4 */
+    if (z2p == z1p) {
+        bary_add(z2ds, z2n, z2ds, z2n, z1ds, z1n);
+    }
+    else {
+        if (bary_sub(z2ds, z2n, z2ds, z2n, z1ds, z1n)) {
+            bary_2comp(z2ds, z2n);
+            z2p = !z2p;
+        }
+    }
+
+    if (z2p == t4p) {
+        if (bary_sub(z2ds, z2n, z2ds, z2n, t4ds, t4n)) {
+            bary_2comp(z2ds, z2n);
+            z2p = !z2p;
+        }
+    }
+    else {
+        bary_add(z2ds, z2n, z2ds, z2n, t4ds, t4n);
+    }
+
+    /* z1 <- z1 - z3 */
+    if (z1p == z3p) {
+        if (bary_sub(z1ds, z1n, z1ds, z1n, z3ds, z3n)) {
+            bary_2comp(z1ds, z1n);
+            z1p = !z1p;
+        }
+    }
+    else {
+        bary_add(z1ds, z1n, z1ds, z1n, z3ds, z3n);
+    }
+
+    /*
+     * [Step3] Substituting base value into b of the polynomial z(b),
+     */
+
+    MEMCPY(zzds, z0ds, BDIGIT, z0n);
+    BDIGITS_ZERO(zzds + z0n, 4*n - z0n);
+    MEMCPY(zzds + 4*n, z4ds, BDIGIT, z4n);
+    BDIGITS_ZERO(zzds + 4*n + z4n, zzn - (4*n + z4n));
+    if (z1p)
+        bary_add(zzds +   n, zzn -   n, zzds +   n, zzn -   n, z1ds, z1n);
+    else
+        bary_sub(zzds +   n, zzn -   n, zzds +   n, zzn -   n, z1ds, z1n);
+    if (z2p)
+        bary_add(zzds + 2*n, zzn - 2*n, zzds + 2*n, zzn - 2*n, z2ds, z2n);
+    else
+        bary_sub(zzds + 2*n, zzn - 2*n, zzds + 2*n, zzn - 2*n, z2ds, z2n);
+    if (z3p)
+        bary_add(zzds + 3*n, zzn - 3*n, zzds + 3*n, zzn - 3*n, z3ds, z3n);
+    else
+        bary_sub(zzds + 3*n, zzn - 3*n, zzds + 3*n, zzn - 3*n, z3ds, z3n);
+
+    BARY_TRUNC(zzds, zzn);
+    MEMCPY(zds, zzds, BDIGIT, zzn);
+    BDIGITS_ZERO(zds + zzn, zn - zzn);
+
+    if (work)
+        ALLOCV_END(work);
+}
+
+VALUE
+rb_big_mul_toom3(VALUE x, VALUE y)
+{
+    size_t xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y), zn = xn + yn;
+    VALUE z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+    if (xn > yn || yn < 3 || !TOOM3_BALANCED(xn,yn))
+        rb_raise(rb_eArgError, "unexpected bignum length for toom3");
+    bary_mul_toom3(BDIGITS(z), zn, BDIGITS(x), xn, BDIGITS(y), yn, NULL, 0);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    return z;
+}
+
+#ifdef USE_GMP
+static inline void
+bdigits_to_mpz(mpz_t mp, const BDIGIT *digits, size_t len)
+{
+    const size_t nails = (sizeof(BDIGIT)-SIZEOF_BDIGIT)*CHAR_BIT;
+    mpz_import(mp, len, -1, sizeof(BDIGIT), 0, nails, digits);
+}
+
+static inline void
+bdigits_from_mpz(mpz_t mp, BDIGIT *digits, size_t *len)
+{
+    const size_t nails = (sizeof(BDIGIT)-SIZEOF_BDIGIT)*CHAR_BIT;
+    mpz_export(digits, len, -1, sizeof(BDIGIT), 0, nails, mp);
+}
+
+static void
+bary_mul_gmp(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    mpz_t x, y, z;
+    size_t count;
+
+    assert(xn + yn <= zn);
+
+    mpz_init(x);
+    mpz_init(y);
+    mpz_init(z);
+    bdigits_to_mpz(x, xds, xn);
+    if (xds == yds && xn == yn) {
+        mpz_mul(z, x, x);
+    }
+    else {
+        bdigits_to_mpz(y, yds, yn);
+        mpz_mul(z, x, y);
+    }
+    bdigits_from_mpz(z, zds, &count);
+    BDIGITS_ZERO(zds+count, zn-count);
+    mpz_clear(x);
+    mpz_clear(y);
+    mpz_clear(z);
+}
+
+VALUE
+rb_big_mul_gmp(VALUE x, VALUE y)
+{
+    size_t xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y), zn = xn + yn;
+    VALUE z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+    bary_mul_gmp(BDIGITS(z), zn, BDIGITS(x), xn, BDIGITS(y), yn);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    return z;
+}
+#endif
+
+static void
+bary_short_mul(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    assert(xn + yn <= zn);
+
+    if (xn == 1 && yn == 1) {
+        bary_mul_single(zds, zn, xds[0], yds[0]);
+    }
+    else {
+        bary_mul_normal(zds, zn, xds, xn, yds, yn);
+        rb_thread_check_ints();
+    }
+}
+
+/* determine whether a bignum is sparse or not by random sampling */
+static inline int
+bary_sparse_p(const BDIGIT *ds, size_t n)
+{
+    long c = 0;
+
+    if (          ds[2 * n / 5]) c++;
+    if (c <= 1 && ds[    n / 2]) c++;
+    if (c <= 1 && ds[3 * n / 5]) c++;
+
+    return (c <= 1) ? 1 : 0;
+}
+
+static int
+bary_mul_precheck(BDIGIT **zdsp, size_t *znp, const BDIGIT **xdsp, size_t *xnp, const BDIGIT **ydsp, size_t *ynp)
+{
+    size_t nlsz; /* number of least significant zero BDIGITs */
+
+    BDIGIT *zds = *zdsp;
+    size_t zn = *znp;
+    const BDIGIT *xds = *xdsp;
+    size_t xn = *xnp;
+    const BDIGIT *yds = *ydsp;
+    size_t yn = *ynp;
+
+    assert(xn + yn <= zn);
+
+    nlsz = 0;
+
+    while (0 < xn) {
+        if (xds[xn-1] == 0) {
+            xn--;
+        }
+        else {
+            do {
+                if (xds[0] != 0)
+                    break;
+                xds++;
+                xn--;
+                nlsz++;
+            } while (0 < xn);
+            break;
+        }
+    }
+
+    while (0 < yn) {
+        if (yds[yn-1] == 0) {
+            yn--;
+        }
+        else {
+            do {
+                if (yds[0] != 0)
+                    break;
+                yds++;
+                yn--;
+                nlsz++;
+            } while (0 < yn);
+            break;
+        }
+    }
+
+    if (nlsz) {
+        BDIGITS_ZERO(zds, nlsz);
+        zds += nlsz;
+        zn -= nlsz;
+    }
+
+    /* make sure that y is longer than x */
+    if (xn > yn) {
+        const BDIGIT *tds;
+        size_t tn;
+	tds = xds; xds = yds; yds = tds;
+	tn = xn; xn = yn; yn = tn;
+    }
+    assert(xn <= yn);
+
+    if (xn <= 1) {
+        if (xn == 0) {
+            BDIGITS_ZERO(zds, zn);
+            return 1;
+        }
+
+        if (xds[0] == 1) {
+            MEMCPY(zds, yds, BDIGIT, yn);
+            BDIGITS_ZERO(zds+yn, zn-yn);
+            return 1;
+        }
+        if (POW2_P(xds[0])) {
+            zds[yn] = bary_small_lshift(zds, yds, yn, bit_length(xds[0])-1);
+            BDIGITS_ZERO(zds+yn+1, zn-yn-1);
+            return 1;
+        }
+        if (yn == 1 && yds[0] == 1) {
+            zds[0] = xds[0];
+            BDIGITS_ZERO(zds+1, zn-1);
+            return 1;
+        }
+        bary_mul_normal(zds, zn, xds, xn, yds, yn);
+        return 1;
+    }
+
+    *zdsp = zds;
+    *znp = zn;
+    *xdsp = xds;
+    *xnp = xn;
+    *ydsp = yds;
+    *ynp = yn;
+
+    return 0;
+}
+
+static void
+bary_mul_karatsuba_branch(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn)
+{
+    /* normal multiplication when x is small */
+    if (xn < KARATSUBA_MUL_DIGITS) {
+        goto normal;
+    }
+
+    /* normal multiplication when x or y is a sparse bignum */
+    if (bary_sparse_p(xds, xn)) goto normal;
+    if (bary_sparse_p(yds, yn)) {
+        bary_short_mul(zds, zn, yds, yn, xds, xn);
+        return;
+    }
+
+    /* balance multiplication by slicing y when x is much smaller than y */
+    if (!KARATSUBA_BALANCED(xn, yn)) {
+        bary_mul_balance_with_mulfunc(zds, zn, xds, xn, yds, yn, wds, wn, bary_mul_karatsuba_start);
+        return;
+    }
+
+    /* multiplication by karatsuba method */
+    bary_mul_karatsuba(zds, zn, xds, xn, yds, yn, wds, wn);
+    return;
+
+  normal:
+    if (xds == yds && xn == yn) {
+        bary_sq_fast(zds, zn, xds, xn);
+    }
+    else {
+        bary_short_mul(zds, zn, xds, xn, yds, yn);
+    }
+}
+
+static void
+bary_mul_karatsuba_start(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn)
+{
+    if (bary_mul_precheck(&zds, &zn, &xds, &xn, &yds, &yn))
+        return;
+
+    bary_mul_karatsuba_branch(zds, zn, xds, xn, yds, yn, wds, wn);
+}
+
+static void
+bary_mul_toom3_branch(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn)
+{
+    if (xn < TOOM3_MUL_DIGITS) {
+        bary_mul_karatsuba_branch(zds, zn, xds, xn, yds, yn, wds, wn);
+        return;
+    }
+
+    if (!TOOM3_BALANCED(xn, yn)) {
+        bary_mul_balance_with_mulfunc(zds, zn, xds, xn, yds, yn, wds, wn, bary_mul_toom3_start);
+        return;
+    }
+
+    bary_mul_toom3(zds, zn, xds, xn, yds, yn, wds, wn);
+}
+
+static void
+bary_mul_toom3_start(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, BDIGIT *wds, size_t wn)
+{
+    if (bary_mul_precheck(&zds, &zn, &xds, &xn, &yds, &yn))
+        return;
+
+    bary_mul_toom3_branch(zds, zn, xds, xn, yds, yn, wds, wn);
+}
+
+static void
+bary_mul(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    if (xn <= yn) {
+        if (xn < NAIVE_MUL_DIGITS) {
+            if (xds == yds && xn == yn)
+                bary_sq_fast(zds, zn, xds, xn);
+            else
+                bary_short_mul(zds, zn, xds, xn, yds, yn);
+            return;
+        }
+    }
+    else {
+        if (yn < NAIVE_MUL_DIGITS) {
+            bary_short_mul(zds, zn, yds, yn, xds, xn);
+            return;
+        }
+    }
+
+#ifdef USE_GMP
+    bary_mul_gmp(zds, zn, xds, xn, yds, yn);
+#else
+    bary_mul_toom3_start(zds, zn, xds, xn, yds, yn, NULL, 0);
+#endif
+}
+
+struct big_div_struct {
+    size_t yn, zn;
+    BDIGIT *yds, *zds;
+    volatile VALUE stop;
+};
+
+static void *
+bigdivrem1(void *ptr)
+{
+    struct big_div_struct *bds = (struct big_div_struct*)ptr;
+    size_t yn = bds->yn;
+    size_t zn = bds->zn;
+    BDIGIT *yds = bds->yds, *zds = bds->zds;
+    BDIGIT_DBL_SIGNED num;
+    BDIGIT q;
+
+    do {
+	if (bds->stop) {
+	    bds->zn = zn;
+	    return 0;
+        }
+	if (zds[zn-1] == yds[yn-1]) q = BDIGMAX;
+	else q = (BDIGIT)((BIGUP(zds[zn-1]) + zds[zn-2])/yds[yn-1]);
+	if (q) {
+            num = bigdivrem_mulsub(zds+zn-(yn+1), yn+1,
+                                   q,
+                                   yds, yn);
+	    while (num) { /* "add back" required */
+		q--;
+                num = bary_add(zds+zn-(yn+1), yn,
+                               zds+zn-(yn+1), yn,
+                               yds, yn);
+                num--;
+	    }
+	}
+        zn--;
+	zds[zn] = q;
+    } while (zn > yn);
+    return 0;
+}
+
+/* async-signal-safe */
+static void
+rb_big_stop(void *ptr)
+{
+    struct big_div_struct *bds = ptr;
+    bds->stop = Qtrue;
+}
+
+static BDIGIT
+bigdivrem_single1(BDIGIT *qds, const BDIGIT *xds, size_t xn, BDIGIT x_higher_bdigit, BDIGIT y)
+{
+    assert(0 < xn);
+    assert(x_higher_bdigit < y);
+    if (POW2_P(y)) {
+        BDIGIT r;
+        r = xds[0] & (y-1);
+        bary_small_rshift(qds, xds, xn, bit_length(y)-1, x_higher_bdigit);
+        return r;
+    }
+    else {
+        size_t i;
+        BDIGIT_DBL t2;
+        t2 = x_higher_bdigit;
+        for (i = 0; i < xn; i++) {
+            t2 = BIGUP(t2) + xds[xn - i - 1];
+            qds[xn - i - 1] = (BDIGIT)(t2 / y);
+            t2 %= y;
+        }
+        return (BDIGIT)t2;
+    }
+}
+
+static BDIGIT
+bigdivrem_single(BDIGIT *qds, const BDIGIT *xds, size_t xn, BDIGIT y)
+{
+    return bigdivrem_single1(qds, xds, xn, 0, y);
+}
+
+static void
+bigdivrem_restoring(BDIGIT *zds, size_t zn, BDIGIT *yds, size_t yn)
+{
+    struct big_div_struct bds;
+    size_t ynzero;
+
+    assert(yn < zn);
+    assert(BDIGIT_MSB(yds[yn-1]));
+    assert(zds[zn-1] < yds[yn-1]);
+
+    for (ynzero = 0; !yds[ynzero]; ynzero++);
+
+    if (ynzero+1 == yn) {
+        BDIGIT r;
+        r = bigdivrem_single1(zds+yn, zds+ynzero, zn-yn, zds[zn-1], yds[ynzero]);
+        zds[ynzero] = r;
+        return;
+    }
+
+    bds.yn = yn - ynzero;
+    bds.zds = zds + ynzero;
+    bds.yds = yds + ynzero;
+    bds.stop = Qfalse;
+    bds.zn = zn - ynzero;
+    if (bds.zn > 10000 || bds.yn > 10000) {
+      retry:
+	bds.stop = Qfalse;
+        rb_nogvl(bigdivrem1, &bds, rb_big_stop, &bds, RB_NOGVL_UBF_ASYNC_SAFE);
+
+	if (bds.stop == Qtrue) {
+	    /* execute trap handler, but exception was not raised. */
+	    goto retry;
+	}
+    }
+    else {
+	bigdivrem1(&bds);
+    }
+}
+
+static void
+bary_divmod_normal(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    int shift;
+    BDIGIT *zds, *yyds;
+    size_t zn;
+    VALUE tmpyz = 0;
+
+    assert(yn < xn || (xn == yn && yds[yn - 1] <= xds[xn - 1]));
+    assert(qds ? (xn - yn + 1) <= qn : 1);
+    assert(rds ? yn <= rn : 1);
+
+    zn = xn + BIGDIVREM_EXTRA_WORDS;
+
+    shift = nlz(yds[yn-1]);
+    if (shift) {
+        int alloc_y = !rds;
+        int alloc_z = !qds || qn < zn;
+        if (alloc_y && alloc_z) {
+            yyds = ALLOCV_N(BDIGIT, tmpyz, yn+zn);
+            zds = yyds + yn;
+        }
+        else {
+            yyds = alloc_y ? ALLOCV_N(BDIGIT, tmpyz, yn) : rds;
+            zds = alloc_z ? ALLOCV_N(BDIGIT, tmpyz, zn) : qds;
+        }
+        zds[xn] = bary_small_lshift(zds, xds, xn, shift);
+        bary_small_lshift(yyds, yds, yn, shift);
+    }
+    else {
+        if (qds && zn <= qn)
+            zds = qds;
+        else
+            zds = ALLOCV_N(BDIGIT, tmpyz, zn);
+        MEMCPY(zds, xds, BDIGIT, xn);
+        zds[xn] = 0;
+        /* bigdivrem_restoring will not modify y.
+         * So use yds directly.  */
+        yyds = (BDIGIT *)yds;
+    }
+
+    bigdivrem_restoring(zds, zn, yyds, yn);
+
+    if (rds) {
+        if (shift)
+            bary_small_rshift(rds, zds, yn, shift, 0);
+        else
+            MEMCPY(rds, zds, BDIGIT, yn);
+        BDIGITS_ZERO(rds+yn, rn-yn);
+    }
+
+    if (qds) {
+        size_t j = zn - yn;
+        MEMMOVE(qds, zds+yn, BDIGIT, j);
+        BDIGITS_ZERO(qds+j, qn-j);
+    }
+
+    if (tmpyz)
+        ALLOCV_END(tmpyz);
+}
+
+VALUE
+rb_big_divrem_normal(VALUE x, VALUE y)
+{
+    size_t xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y), qn, rn;
+    BDIGIT *xds = BDIGITS(x), *yds = BDIGITS(y), *qds, *rds;
+    VALUE q, r;
+
+    BARY_TRUNC(yds, yn);
+    if (yn == 0)
+        rb_num_zerodiv();
+    BARY_TRUNC(xds, xn);
+
+    if (xn < yn || (xn == yn && xds[xn - 1] < yds[yn - 1]))
+        return rb_assoc_new(LONG2FIX(0), x);
+
+    qn = xn + BIGDIVREM_EXTRA_WORDS;
+    q = bignew(qn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+    qds = BDIGITS(q);
+
+    rn = yn;
+    r = bignew(rn, BIGNUM_SIGN(x));
+    rds = BDIGITS(r);
+
+    bary_divmod_normal(qds, qn, rds, rn, xds, xn, yds, yn);
+
+    bigtrunc(q);
+    bigtrunc(r);
+
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+
+    return rb_assoc_new(q, r);
+}
+
+#ifdef USE_GMP
+static void
+bary_divmod_gmp(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    mpz_t x, y, q, r;
+    size_t count;
+
+    assert(yn < xn || (xn == yn && yds[yn - 1] <= xds[xn - 1]));
+    assert(qds ? (xn - yn + 1) <= qn : 1);
+    assert(rds ? yn <= rn : 1);
+    assert(qds || rds);
+
+    mpz_init(x);
+    mpz_init(y);
+    if (qds) mpz_init(q);
+    if (rds) mpz_init(r);
+
+    bdigits_to_mpz(x, xds, xn);
+    bdigits_to_mpz(y, yds, yn);
+
+    if (!rds) {
+        mpz_fdiv_q(q, x, y);
+    }
+    else if (!qds) {
+        mpz_fdiv_r(r, x, y);
+    }
+    else {
+        mpz_fdiv_qr(q, r, x, y);
+    }
+
+    mpz_clear(x);
+    mpz_clear(y);
+
+    if (qds) {
+        bdigits_from_mpz(q, qds, &count);
+        BDIGITS_ZERO(qds+count, qn-count);
+        mpz_clear(q);
+    }
+
+    if (rds) {
+        bdigits_from_mpz(r, rds, &count);
+        BDIGITS_ZERO(rds+count, rn-count);
+        mpz_clear(r);
+    }
+}
+
+VALUE
+rb_big_divrem_gmp(VALUE x, VALUE y)
+{
+    size_t xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y), qn, rn;
+    BDIGIT *xds = BDIGITS(x), *yds = BDIGITS(y), *qds, *rds;
+    VALUE q, r;
+
+    BARY_TRUNC(yds, yn);
+    if (yn == 0)
+        rb_num_zerodiv();
+    BARY_TRUNC(xds, xn);
+
+    if (xn < yn || (xn == yn && xds[xn - 1] < yds[yn - 1]))
+        return rb_assoc_new(LONG2FIX(0), x);
+
+    qn = xn - yn + 1;
+    q = bignew(qn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+    qds = BDIGITS(q);
+
+    rn = yn;
+    r = bignew(rn, BIGNUM_SIGN(x));
+    rds = BDIGITS(r);
+
+    bary_divmod_gmp(qds, qn, rds, rn, xds, xn, yds, yn);
+
+    bigtrunc(q);
+    bigtrunc(r);
+
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+
+    return rb_assoc_new(q, r);
+}
+#endif
+
+static void
+bary_divmod_branch(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+#ifdef USE_GMP
+    if (GMP_DIV_DIGITS < xn) {
+        bary_divmod_gmp(qds, qn, rds, rn, xds, xn, yds, yn);
+        return;
+    }
+#endif
+    bary_divmod_normal(qds, qn, rds, rn, xds, xn, yds, yn);
+}
+
+static void
+bary_divmod(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
+{
+    assert(xn <= qn);
+    assert(yn <= rn);
+
+    BARY_TRUNC(yds, yn);
+    if (yn == 0)
+        rb_num_zerodiv();
+
+    BARY_TRUNC(xds, xn);
+    if (xn == 0) {
+        BDIGITS_ZERO(qds, qn);
+        BDIGITS_ZERO(rds, rn);
+        return;
+    }
+
+    if (xn < yn || (xn == yn && xds[xn - 1] < yds[yn - 1])) {
+        MEMCPY(rds, xds, BDIGIT, xn);
+        BDIGITS_ZERO(rds+xn, rn-xn);
+        BDIGITS_ZERO(qds, qn);
+    }
+    else if (yn == 1) {
+        MEMCPY(qds, xds, BDIGIT, xn);
+        BDIGITS_ZERO(qds+xn, qn-xn);
+        rds[0] = bigdivrem_single(qds, xds, xn, yds[0]);
+        BDIGITS_ZERO(rds+1, rn-1);
+    }
+    else if (xn == 2 && yn == 2) {
+        BDIGIT_DBL x = bary2bdigitdbl(xds, 2);
+        BDIGIT_DBL y = bary2bdigitdbl(yds, 2);
+        BDIGIT_DBL q = x / y;
+        BDIGIT_DBL r = x % y;
+        qds[0] = BIGLO(q);
+        qds[1] = BIGLO(BIGDN(q));
+        BDIGITS_ZERO(qds+2, qn-2);
+        rds[0] = BIGLO(r);
+        rds[1] = BIGLO(BIGDN(r));
+        BDIGITS_ZERO(rds+2, rn-2);
+    }
+    else {
+        bary_divmod_branch(qds, qn, rds, rn, xds, xn, yds, yn);
+    }
+}
+
+
+#ifndef BIGNUM_DEBUG
+# define BIGNUM_DEBUG (0+RUBY_DEBUG)
+#endif
+
+static int
+bigzero_p(VALUE x)
+{
+    return bary_zero_p(BDIGITS(x), BIGNUM_LEN(x));
+}
+
+int
+rb_bigzero_p(VALUE x)
+{
+    return BIGZEROP(x);
 }
 
 int
@@ -62,9 +2938,9 @@ rb_cmpint(VALUE val, VALUE a, VALUE b)
         if (l < 0) return -1;
         return 0;
     }
-    if (TYPE(val) == T_BIGNUM) {
+    if (RB_BIGNUM_TYPE_P(val)) {
 	if (BIGZEROP(val)) return 0;
-	if (RBIGNUM_SIGN(val)) return 1;
+	if (BIGNUM_SIGN(val)) return 1;
 	return -1;
     }
     if (RTEST(rb_funcall(val, '>', 1, INT2FIX(0)))) return 1;
@@ -72,37 +2948,39 @@ rb_cmpint(VALUE val, VALUE a, VALUE b)
     return 0;
 }
 
-#define RBIGNUM_SET_LEN(b,l) \
-  ((RBASIC(b)->flags & RBIGNUM_EMBED_FLAG) ? \
-   (RBASIC(b)->flags = (RBASIC(b)->flags & ~RBIGNUM_EMBED_LEN_MASK) | \
-      ((l) << RBIGNUM_EMBED_LEN_SHIFT)) : \
-   (RBIGNUM(b)->as.heap.len = (l)))
+#define BIGNUM_SET_LEN(b,l) \
+    (BIGNUM_EMBED_P(b) ? \
+     (void)(RBASIC(b)->flags = \
+	    (RBASIC(b)->flags & ~BIGNUM_EMBED_LEN_MASK) | \
+	    ((l) << BIGNUM_EMBED_LEN_SHIFT)) : \
+     (void)(RBIGNUM(b)->as.heap.len = (l)))
 
 static void
-rb_big_realloc(VALUE big, long len)
+rb_big_realloc(VALUE big, size_t len)
 {
     BDIGIT *ds;
-    if (RBASIC(big)->flags & RBIGNUM_EMBED_FLAG) {
-	if (RBIGNUM_EMBED_LEN_MAX < len) {
+    if (BIGNUM_EMBED_P(big)) {
+	if (BIGNUM_EMBED_LEN_MAX < len) {
 	    ds = ALLOC_N(BDIGIT, len);
-	    MEMCPY(ds, RBIGNUM(big)->as.ary, BDIGIT, RBIGNUM_EMBED_LEN_MAX);
-	    RBIGNUM(big)->as.heap.len = RBIGNUM_LEN(big);
+	    MEMCPY(ds, RBIGNUM(big)->as.ary, BDIGIT, BIGNUM_EMBED_LEN_MAX);
+	    RBIGNUM(big)->as.heap.len = BIGNUM_LEN(big);
 	    RBIGNUM(big)->as.heap.digits = ds;
-	    RBASIC(big)->flags &= ~RBIGNUM_EMBED_FLAG;
+            FL_UNSET_RAW(big, BIGNUM_EMBED_FLAG);
 	}
     }
     else {
-	if (len <= RBIGNUM_EMBED_LEN_MAX) {
+	if (len <= BIGNUM_EMBED_LEN_MAX) {
 	    ds = RBIGNUM(big)->as.heap.digits;
-	    RBASIC(big)->flags |= RBIGNUM_EMBED_FLAG;
-	    RBIGNUM_SET_LEN(big, len);
+            FL_SET_RAW(big, BIGNUM_EMBED_FLAG);
+	    BIGNUM_SET_LEN(big, len);
+            (void)VALGRIND_MAKE_MEM_UNDEFINED((void*)RBIGNUM(big)->as.ary, sizeof(RBIGNUM(big)->as.ary));
 	    if (ds) {
 		MEMCPY(RBIGNUM(big)->as.ary, ds, BDIGIT, len);
 		xfree(ds);
 	    }
 	}
 	else {
-	    if (RBIGNUM_LEN(big) == 0) {
+	    if (BIGNUM_LEN(big) == 0) {
 		RBIGNUM(big)->as.heap.digits = ALLOC_N(BDIGIT, len);
 	    }
 	    else {
@@ -113,60 +2991,63 @@ rb_big_realloc(VALUE big, long len)
 }
 
 void
-rb_big_resize(VALUE big, long len)
+rb_big_resize(VALUE big, size_t len)
 {
     rb_big_realloc(big, len);
-    RBIGNUM_SET_LEN(big, len);
+    BIGNUM_SET_LEN(big, len);
 }
 
 static VALUE
-bignew_1(VALUE klass, long len, int sign)
+bignew_1(VALUE klass, size_t len, int sign)
 {
-    NEWOBJ(big, struct RBignum);
-    OBJSETUP(big, klass, T_BIGNUM);
-    RBIGNUM_SET_SIGN(big, sign?1:0);
-    if (len <= RBIGNUM_EMBED_LEN_MAX) {
-	RBASIC(big)->flags |= RBIGNUM_EMBED_FLAG;
-	RBIGNUM_SET_LEN(big, len);
+    NEWOBJ_OF(big, struct RBignum, klass, T_BIGNUM | (RGENGC_WB_PROTECTED_BIGNUM ? FL_WB_PROTECTED : 0));
+    VALUE bigv = (VALUE)big;
+    BIGNUM_SET_SIGN(bigv, sign);
+    if (len <= BIGNUM_EMBED_LEN_MAX) {
+        FL_SET_RAW(bigv, BIGNUM_EMBED_FLAG);
+        BIGNUM_SET_LEN(bigv, len);
+        (void)VALGRIND_MAKE_MEM_UNDEFINED((void*)big->as.ary, sizeof(big->as.ary));
     }
     else {
-	rb_big_resize((VALUE)big, len);
+        big->as.heap.digits = ALLOC_N(BDIGIT, len);
+        big->as.heap.len = len;
     }
-
-    return (VALUE)big;
+    OBJ_FREEZE(bigv);
+    return bigv;
 }
 
-#define bignew(len,sign) bignew_1(rb_cBignum,len,sign)
+VALUE
+rb_big_new(size_t len, int sign)
+{
+    return bignew(len, sign != 0);
+}
 
 VALUE
 rb_big_clone(VALUE x)
 {
-    VALUE z = bignew_1(CLASS_OF(x), RBIGNUM_LEN(x), RBIGNUM_SIGN(x));
+    size_t len = BIGNUM_LEN(x);
+    VALUE z = bignew_1(CLASS_OF(x), len, BIGNUM_SIGN(x));
 
-    MEMCPY(BDIGITS(z), BDIGITS(x), BDIGIT, RBIGNUM_LEN(x));
+    MEMCPY(BDIGITS(z), BDIGITS(x), BDIGIT, len);
     return z;
 }
 
+static void
+big_extend_carry(VALUE x)
+{
+    rb_big_resize(x, BIGNUM_LEN(x)+1);
+    BDIGITS(x)[BIGNUM_LEN(x)-1] = 1;
+}
+
 /* modify a bignum by 2's complement */
 static void
 get2comp(VALUE x)
 {
-    long i = RBIGNUM_LEN(x);
+    long i = BIGNUM_LEN(x);
     BDIGIT *ds = BDIGITS(x);
-    BDIGIT_DBL num;
 
-    if (!i) return;
-    while (i--) ds[i] = ~ds[i];
-    i = 0; num = 1;
-    do {
-	num += ds[i];
-	ds[i++] = BIGLO(num);
-	num = BIGDN(num);
-    } while (i < RBIGNUM_LEN(x));
-    if (num != 0) {
-	rb_big_resize(x, RBIGNUM_LEN(x)+1);
-	ds = BDIGITS(x);
-	ds[RBIGNUM_LEN(x)-1] = 1;
+    if (bary_2comp(ds, i)) {
+        big_extend_carry(x);
     }
 }
 
@@ -176,46 +3057,99 @@ rb_big_2comp(VALUE x)			/* get 2's complement */
     get2comp(x);
 }
 
-static VALUE
+static BDIGIT
+abs2twocomp(VALUE *xp, long *n_ret)
+{
+    VALUE x = *xp;
+    long n = BIGNUM_LEN(x);
+    BDIGIT *ds = BDIGITS(x);
+    BDIGIT hibits = 0;
+
+    BARY_TRUNC(ds, n);
+
+    if (n != 0 && BIGNUM_NEGATIVE_P(x)) {
+        VALUE z = bignew_1(CLASS_OF(x), n, 0);
+        MEMCPY(BDIGITS(z), ds, BDIGIT, n);
+        bary_2comp(BDIGITS(z), n);
+        hibits = BDIGMAX;
+	*xp = z;
+    }
+    *n_ret = n;
+    return hibits;
+}
+
+static void
+twocomp2abs_bang(VALUE x, int hibits)
+{
+    BIGNUM_SET_SIGN(x, !hibits);
+    if (hibits) {
+        get2comp(x);
+    }
+}
+
+static inline VALUE
 bigtrunc(VALUE x)
 {
-    long len = RBIGNUM_LEN(x);
+    size_t len = BIGNUM_LEN(x);
     BDIGIT *ds = BDIGITS(x);
 
     if (len == 0) return x;
     while (--len && !ds[len]);
-    rb_big_resize(x, len+1);
+    if (BIGNUM_LEN(x) > len+1) {
+	rb_big_resize(x, len+1);
+    }
     return x;
 }
 
-static VALUE
+static inline VALUE
 bigfixize(VALUE x)
 {
-    long len = RBIGNUM_LEN(x);
+    size_t n = BIGNUM_LEN(x);
     BDIGIT *ds = BDIGITS(x);
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    unsigned long u;
+#else
+    BDIGIT u;
+#endif
 
-    if (len*SIZEOF_BDIGITS <= sizeof(long)) {
-	long num = 0;
-	while (len--) {
-	    num = BIGUP(num) + ds[len];
-	}
-	if (num >= 0) {
-	    if (RBIGNUM_SIGN(x)) {
-		if (POSFIXABLE(num)) return LONG2FIX(num);
-	    }
-	    else {
-		if (NEGFIXABLE(-(long)num)) return LONG2FIX(-(long)num);
-	    }
-	}
+    BARY_TRUNC(ds, n);
+
+    if (n == 0) return INT2FIX(0);
+
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    if (sizeof(long)/SIZEOF_BDIGIT < n)
+        goto return_big;
+    else {
+        int i = (int)n;
+        u = 0;
+        while (i--) {
+            u = (unsigned long)(BIGUP(u) + ds[i]);
+        }
+    }
+#else /* SIZEOF_BDIGIT >= SIZEOF_LONG */
+    if (1 < n)
+        goto return_big;
+    else
+        u = ds[0];
+#endif
+
+    if (BIGNUM_POSITIVE_P(x)) {
+        if (POSFIXABLE(u)) return LONG2FIX((long)u);
+    }
+    else {
+        if (u <= -FIXNUM_MIN) return LONG2FIX(-(long)u);
     }
+
+  return_big:
+    rb_big_resize(x, n);
     return x;
 }
 
 static VALUE
 bignorm(VALUE x)
 {
-    if (!FIXNUM_P(x) && TYPE(x) == T_BIGNUM) {
-	x = bigfixize(bigtrunc(x));
+    if (RB_BIGNUM_TYPE_P(x)) {
+	x = bigfixize(x);
     }
     return x;
 }
@@ -227,228 +3161,947 @@ rb_big_norm(VALUE x)
 }
 
 VALUE
-rb_uint2big(VALUE n)
+rb_uint2big(uintptr_t n)
 {
-    BDIGIT_DBL num = n;
-    long i = 0;
-    BDIGIT *digits;
-    VALUE big;
+    long i;
+    VALUE big = bignew(bdigit_roomof(SIZEOF_VALUE), 1);
+    BDIGIT *digits = BDIGITS(big);
 
-    big = bignew(DIGSPERLONG, 1);
-    digits = BDIGITS(big);
-    while (i < DIGSPERLONG) {
-	digits[i++] = BIGLO(num);
-	num = BIGDN(num);
+#if SIZEOF_BDIGIT >= SIZEOF_VALUE
+    digits[0] = n;
+#else
+    for (i = 0; i < bdigit_roomof(SIZEOF_VALUE); i++) {
+	digits[i] = BIGLO(n);
+	n = BIGDN(n);
     }
+#endif
 
-    i = DIGSPERLONG;
+    i = bdigit_roomof(SIZEOF_VALUE);
     while (--i && !digits[i]) ;
-    RBIGNUM_SET_LEN(big, i+1);
+    BIGNUM_SET_LEN(big, i+1);
     return big;
 }
 
 VALUE
-rb_int2big(SIGNED_VALUE n)
+rb_int2big(intptr_t n)
 {
     long neg = 0;
+    VALUE u;
     VALUE big;
 
     if (n < 0) {
-	n = -n;
+        u = 1 + (VALUE)(-(n + 1)); /* u = -n avoiding overflow */
 	neg = 1;
     }
-    big = rb_uint2big(n);
+    else {
+        u = n;
+    }
+    big = rb_uint2big(u);
     if (neg) {
-	RBIGNUM_SET_SIGN(big, 0);
+	BIGNUM_SET_NEGATIVE_SIGN(big);
     }
     return big;
 }
 
 VALUE
-rb_uint2inum(VALUE n)
+rb_uint2inum(uintptr_t n)
 {
     if (POSFIXABLE(n)) return LONG2FIX(n);
     return rb_uint2big(n);
 }
 
 VALUE
-rb_int2inum(SIGNED_VALUE n)
+rb_int2inum(intptr_t n)
 {
     if (FIXABLE(n)) return LONG2FIX(n);
     return rb_int2big(n);
 }
 
-#ifdef HAVE_LONG_LONG
-
 void
-rb_quad_pack(char *buf, VALUE val)
+rb_big_pack(VALUE val, unsigned long *buf, long num_longs)
 {
-    LONG_LONG q;
+    rb_integer_pack(val, buf, num_longs, sizeof(long), 0,
+            INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_NATIVE_BYTE_ORDER|
+            INTEGER_PACK_2COMP);
+}
+
+VALUE
+rb_big_unpack(unsigned long *buf, long num_longs)
+{
+    return rb_integer_unpack(buf, num_longs, sizeof(long), 0,
+            INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_NATIVE_BYTE_ORDER|
+            INTEGER_PACK_2COMP);
+}
+
+/*
+ * Calculate the number of bytes to be required to represent
+ * the absolute value of the integer given as _val_.
+ *
+ * [val] an integer.
+ * [nlz_bits_ret] number of leading zero bits in the most significant byte is returned if not NULL.
+ *
+ * This function returns ((val_numbits * CHAR_BIT + CHAR_BIT - 1) / CHAR_BIT)
+ * where val_numbits is the number of bits of abs(val).
+ * This function should not overflow.
+ *
+ * If nlz_bits_ret is not NULL,
+ * (return_value * CHAR_BIT - val_numbits) is stored in *nlz_bits_ret.
+ * In this case, 0 <= *nlz_bits_ret < CHAR_BIT.
+ *
+ */
+size_t
+rb_absint_size(VALUE val, int *nlz_bits_ret)
+{
+    BDIGIT *dp;
+    BDIGIT *de;
+    BDIGIT fixbuf[bdigit_roomof(sizeof(long))];
+
+    int num_leading_zeros;
 
     val = rb_to_int(val);
+
     if (FIXNUM_P(val)) {
-	q = FIX2LONG(val);
+        long v = FIX2LONG(val);
+        if (v < 0) {
+            v = -v;
+        }
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+        fixbuf[0] = v;
+#else
+        {
+            int i;
+            for (i = 0; i < numberof(fixbuf); i++) {
+                fixbuf[i] = BIGLO(v);
+                v = BIGDN(v);
+            }
+        }
+#endif
+        dp = fixbuf;
+        de = fixbuf + numberof(fixbuf);
     }
     else {
-	long len = RBIGNUM_LEN(val);
-	BDIGIT *ds;
-
-	if (len > SIZEOF_LONG_LONG/SIZEOF_BDIGITS) {
-	    len = SIZEOF_LONG_LONG/SIZEOF_BDIGITS;
-	}
-	ds = BDIGITS(val);
-	q = 0;
-	while (len--) {
-	    q = BIGUP(q);
-	    q += ds[len];
-	}
-	if (!RBIGNUM_SIGN(val)) q = -q;
+        dp = BDIGITS(val);
+        de = dp + BIGNUM_LEN(val);
+    }
+    while (dp < de && de[-1] == 0)
+        de--;
+    if (dp == de) {
+        if (nlz_bits_ret)
+            *nlz_bits_ret = 0;
+        return 0;
     }
-    memcpy(buf, (char*)&q, SIZEOF_LONG_LONG);
+    num_leading_zeros = nlz(de[-1]);
+    if (nlz_bits_ret)
+        *nlz_bits_ret = num_leading_zeros % CHAR_BIT;
+    return (de - dp) * SIZEOF_BDIGIT - num_leading_zeros / CHAR_BIT;
 }
 
-VALUE
-rb_quad_unpack(const char *buf, int sign)
+static size_t
+absint_numwords_small(size_t numbytes, int nlz_bits_in_msbyte, size_t word_numbits, size_t *nlz_bits_ret)
 {
-    unsigned LONG_LONG q;
-    long neg = 0;
-    long i;
-    BDIGIT *digits;
-    VALUE big;
+    size_t val_numbits = numbytes * CHAR_BIT - nlz_bits_in_msbyte;
+    size_t div = val_numbits / word_numbits;
+    size_t mod = val_numbits % word_numbits;
+    size_t numwords;
+    size_t nlz_bits;
+    numwords = mod == 0 ? div : div + 1;
+    nlz_bits = mod == 0 ? 0 : word_numbits - mod;
+    *nlz_bits_ret = nlz_bits;
+    return numwords;
+}
 
-    memcpy(&q, buf, SIZEOF_LONG_LONG);
-    if (sign) {
-	if (FIXABLE((LONG_LONG)q)) return LONG2FIX((LONG_LONG)q);
-	if ((LONG_LONG)q < 0) {
-	    q = -(LONG_LONG)q;
-	    neg = 1;
-	}
+static size_t
+absint_numwords_generic(size_t numbytes, int nlz_bits_in_msbyte, size_t word_numbits, size_t *nlz_bits_ret)
+{
+    static const BDIGIT char_bit[1] = { CHAR_BIT };
+    BDIGIT numbytes_bary[bdigit_roomof(sizeof(numbytes))];
+    BDIGIT val_numbits_bary[bdigit_roomof(sizeof(numbytes) + 1)];
+    BDIGIT nlz_bits_in_msbyte_bary[1];
+    BDIGIT word_numbits_bary[bdigit_roomof(sizeof(word_numbits))];
+    BDIGIT div_bary[numberof(val_numbits_bary) + BIGDIVREM_EXTRA_WORDS];
+    BDIGIT mod_bary[numberof(word_numbits_bary)];
+    BDIGIT one[1] = { 1 };
+    size_t nlz_bits;
+    size_t mod;
+    int sign;
+    size_t numwords;
+
+    nlz_bits_in_msbyte_bary[0] = nlz_bits_in_msbyte;
+
+    /*
+     * val_numbits = numbytes * CHAR_BIT - nlz_bits_in_msbyte
+     * div, mod = val_numbits.divmod(word_numbits)
+     * numwords = mod == 0 ? div : div + 1
+     * nlz_bits = mod == 0 ? 0 : word_numbits - mod
+     */
+
+    bary_unpack(BARY_ARGS(numbytes_bary), &numbytes, 1, sizeof(numbytes), 0,
+        INTEGER_PACK_NATIVE_BYTE_ORDER);
+    BARY_SHORT_MUL(val_numbits_bary, numbytes_bary, char_bit);
+    if (nlz_bits_in_msbyte)
+        BARY_SUB(val_numbits_bary, val_numbits_bary, nlz_bits_in_msbyte_bary);
+    bary_unpack(BARY_ARGS(word_numbits_bary), &word_numbits, 1, sizeof(word_numbits), 0,
+        INTEGER_PACK_NATIVE_BYTE_ORDER);
+    BARY_DIVMOD(div_bary, mod_bary, val_numbits_bary, word_numbits_bary);
+    if (BARY_ZERO_P(mod_bary)) {
+        nlz_bits = 0;
     }
     else {
-	if (POSFIXABLE(q)) return LONG2FIX(q);
+        BARY_ADD(div_bary, div_bary, one);
+        bary_pack(+1, BARY_ARGS(mod_bary), &mod, 1, sizeof(mod), 0,
+            INTEGER_PACK_NATIVE_BYTE_ORDER);
+        nlz_bits = word_numbits - mod;
     }
+    sign = bary_pack(+1, BARY_ARGS(div_bary), &numwords, 1, sizeof(numwords), 0,
+        INTEGER_PACK_NATIVE_BYTE_ORDER);
 
-    i = 0;
-    big = bignew(DIGSPERLL, 1);
-    digits = BDIGITS(big);
-    while (i < DIGSPERLL) {
-	digits[i++] = BIGLO(q);
-	q = BIGDN(q);
+    if (sign == 2) {
+#if defined __GNUC__ && (__GNUC__ == 4 && __GNUC_MINOR__ == 4)
+	*nlz_bits_ret = 0;
+#endif
+        return (size_t)-1;
     }
+    *nlz_bits_ret = nlz_bits;
+    return numwords;
+}
 
-    i = DIGSPERLL;
-    while (i-- && !digits[i]) ;
-    RBIGNUM_SET_LEN(big, i+1);
-
-    if (neg) {
-	RBIGNUM_SET_SIGN(big, 0);
+/*
+ * Calculate the number of words to be required to represent
+ * the absolute value of the integer given as _val_.
+ *
+ * [val] an integer.
+ * [word_numbits] number of bits in a word.
+ * [nlz_bits_ret] number of leading zero bits in the most significant word is returned if not NULL.
+ *
+ * This function returns ((val_numbits * CHAR_BIT + word_numbits - 1) / word_numbits)
+ * where val_numbits is the number of bits of abs(val).
+ *
+ * This function can overflow.
+ * When overflow occur, (size_t)-1 is returned.
+ *
+ * If nlz_bits_ret is not NULL and overflow is not occur,
+ * (return_value * word_numbits - val_numbits) is stored in *nlz_bits_ret.
+ * In this case, 0 <= *nlz_bits_ret < word_numbits.
+ *
+ */
+size_t
+rb_absint_numwords(VALUE val, size_t word_numbits, size_t *nlz_bits_ret)
+{
+    size_t numbytes;
+    int nlz_bits_in_msbyte;
+    size_t numwords;
+    size_t nlz_bits = 0;
+
+    if (word_numbits == 0)
+        return (size_t)-1;
+
+    numbytes = rb_absint_size(val, &nlz_bits_in_msbyte);
+
+    if (numbytes <= SIZE_MAX / CHAR_BIT) {
+        numwords = absint_numwords_small(numbytes, nlz_bits_in_msbyte, word_numbits, &nlz_bits);
+#ifdef DEBUG_INTEGER_PACK
+        {
+            size_t numwords0, nlz_bits0;
+            numwords0 = absint_numwords_generic(numbytes, nlz_bits_in_msbyte, word_numbits, &nlz_bits0);
+            assert(numwords0 == numwords);
+            assert(nlz_bits0 == nlz_bits);
+        }
+#endif
+    }
+    else {
+        numwords = absint_numwords_generic(numbytes, nlz_bits_in_msbyte, word_numbits, &nlz_bits);
     }
-    return bignorm(big);
+    if (numwords == (size_t)-1)
+        return numwords;
+
+    if (nlz_bits_ret)
+        *nlz_bits_ret = nlz_bits;
+
+    return numwords;
 }
 
+/* Test abs(val) consists only a bit or not.
+ *
+ * Returns 1 if abs(val) == 1 << n for some n >= 0.
+ * Returns 0 otherwise.
+ *
+ * rb_absint_singlebit_p can be used to determine required buffer size
+ * for rb_integer_pack used with INTEGER_PACK_2COMP (two's complement).
+ *
+ * Following example calculates number of bits required to
+ * represent val in two's complement number, without sign bit.
+ *
+ *   size_t size;
+ *   int neg = FIXNUM_P(val) ? FIX2LONG(val) < 0 : BIGNUM_NEGATIVE_P(val);
+ *   size = rb_absint_numwords(val, 1, NULL)
+ *   if (size == (size_t)-1) ...overflow...
+ *   if (neg && rb_absint_singlebit_p(val))
+ *     size--;
+ *
+ * Following example calculates number of bytes required to
+ * represent val in two's complement number, with sign bit.
+ *
+ *   size_t size;
+ *   int neg = FIXNUM_P(val) ? FIX2LONG(val) < 0 : BIGNUM_NEGATIVE_P(val);
+ *   int nlz_bits;
+ *   size = rb_absint_size(val, &nlz_bits);
+ *   if (nlz_bits == 0 && !(neg && rb_absint_singlebit_p(val)))
+ *     size++;
+ */
+int
+rb_absint_singlebit_p(VALUE val)
+{
+    BDIGIT *dp;
+    BDIGIT *de;
+    BDIGIT fixbuf[bdigit_roomof(sizeof(long))];
+    BDIGIT d;
+
+    val = rb_to_int(val);
+
+    if (FIXNUM_P(val)) {
+        long v = FIX2LONG(val);
+        if (v < 0) {
+            v = -v;
+        }
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+        fixbuf[0] = v;
 #else
+        {
+            int i;
+            for (i = 0; i < numberof(fixbuf); i++) {
+                fixbuf[i] = BIGLO(v);
+                v = BIGDN(v);
+            }
+        }
+#endif
+        dp = fixbuf;
+        de = fixbuf + numberof(fixbuf);
+    }
+    else {
+        dp = BDIGITS(val);
+        de = dp + BIGNUM_LEN(val);
+    }
+    while (dp < de && de[-1] == 0)
+        de--;
+    while (dp < de && dp[0] == 0)
+        dp++;
+    if (dp == de) /* no bit set. */
+        return 0;
+    if (dp != de-1) /* two non-zero words. two bits set, at least. */
+        return 0;
+    d = *dp;
+    return POW2_P(d);
+}
 
-#define QUAD_SIZE 8
 
-void
-rb_quad_pack(char *buf, VALUE val)
+/*
+ * Export an integer into a buffer.
+ *
+ * This function fills the buffer specified by _words_ and _numwords_ as
+ * val in the format specified by _wordsize_, _nails_ and _flags_.
+ *
+ * [val] Fixnum, Bignum or another integer like object which has to_int method.
+ * [words] buffer to export abs(val).
+ * [numwords] the size of given buffer as number of words.
+ * [wordsize] the size of word as number of bytes.
+ * [nails] number of padding bits in a word.
+ *   Most significant nails bits of each word are filled by zero.
+ * [flags] bitwise or of constants which name starts "INTEGER_PACK_".
+ *
+ * flags:
+ * [INTEGER_PACK_MSWORD_FIRST] Store the most significant word as the first word.
+ * [INTEGER_PACK_LSWORD_FIRST] Store the least significant word as the first word.
+ * [INTEGER_PACK_MSBYTE_FIRST] Store the most significant byte in a word as the first byte in the word.
+ * [INTEGER_PACK_LSBYTE_FIRST] Store the least significant byte in a word as the first byte in the word.
+ * [INTEGER_PACK_NATIVE_BYTE_ORDER] INTEGER_PACK_MSBYTE_FIRST or INTEGER_PACK_LSBYTE_FIRST corresponding to the host's endian.
+ * [INTEGER_PACK_2COMP] Use 2's complement representation.
+ * [INTEGER_PACK_LITTLE_ENDIAN] Same as INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_LSBYTE_FIRST
+ * [INTEGER_PACK_BIG_ENDIAN] Same as INTEGER_PACK_MSWORD_FIRST|INTEGER_PACK_MSBYTE_FIRST
+ * [INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION] Use generic implementation (for test and debug).
+ *
+ * This function fills the buffer specified by _words_
+ * as abs(val) if INTEGER_PACK_2COMP is not specified in _flags_.
+ * If INTEGER_PACK_2COMP is specified, 2's complement representation of val is
+ * filled in the buffer.
+ *
+ * This function returns the signedness and overflow condition.
+ * The overflow condition depends on INTEGER_PACK_2COMP.
+ *
+ * INTEGER_PACK_2COMP is not specified:
+ *   -2 : negative overflow.  val <= -2**(numwords*(wordsize*CHAR_BIT-nails))
+ *   -1 : negative without overflow.  -2**(numwords*(wordsize*CHAR_BIT-nails)) < val < 0
+ *   0 : zero.  val == 0
+ *   1 : positive without overflow.  0 < val < 2**(numwords*(wordsize*CHAR_BIT-nails))
+ *   2 : positive overflow.  2**(numwords*(wordsize*CHAR_BIT-nails)) <= val
+ *
+ * INTEGER_PACK_2COMP is specified:
+ *   -2 : negative overflow.  val < -2**(numwords*(wordsize*CHAR_BIT-nails))
+ *   -1 : negative without overflow.  -2**(numwords*(wordsize*CHAR_BIT-nails)) <= val < 0
+ *   0 : zero.  val == 0
+ *   1 : positive without overflow.  0 < val < 2**(numwords*(wordsize*CHAR_BIT-nails))
+ *   2 : positive overflow.  2**(numwords*(wordsize*CHAR_BIT-nails)) <= val
+ *
+ * The value, -2**(numwords*(wordsize*CHAR_BIT-nails)), is representable
+ * in 2's complement representation but not representable in absolute value.
+ * So -1 is returned for the value if INTEGER_PACK_2COMP is specified
+ * but returns -2 if INTEGER_PACK_2COMP is not specified.
+ *
+ * The least significant words are filled in the buffer when overflow occur.
+ */
+
+int
+rb_integer_pack(VALUE val, void *words, size_t numwords, size_t wordsize, size_t nails, int flags)
 {
-    long len;
+    int sign;
+    BDIGIT *ds;
+    size_t num_bdigits;
+    BDIGIT fixbuf[bdigit_roomof(sizeof(long))];
+
+    RB_GC_GUARD(val) = rb_to_int(val);
 
-    memset(buf, 0, QUAD_SIZE);
-    val = rb_to_int(val);
     if (FIXNUM_P(val)) {
-	val = rb_int2big(FIX2LONG(val));
-    }
-    len = RBIGNUM_LEN(val) * SIZEOF_BDIGITS;
-    if (len > QUAD_SIZE) {
-	rb_raise(rb_eRangeError, "bignum too big to convert into `quad int'");
-    }
-    memcpy(buf, (char*)BDIGITS(val), len);
-    if (!RBIGNUM_SIGN(val)) {
-	len = QUAD_SIZE;
-	while (len--) {
-	    *buf = ~*buf;
-	    buf++;
-	}
+        long v = FIX2LONG(val);
+        if (v < 0) {
+            sign = -1;
+            v = -v;
+        }
+        else {
+            sign = 1;
+        }
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+        fixbuf[0] = v;
+#else
+        {
+            int i;
+            for (i = 0; i < numberof(fixbuf); i++) {
+                fixbuf[i] = BIGLO(v);
+                v = BIGDN(v);
+            }
+        }
+#endif
+        ds = fixbuf;
+        num_bdigits = numberof(fixbuf);
     }
+    else {
+        sign = BIGNUM_POSITIVE_P(val) ? 1 : -1;
+        ds = BDIGITS(val);
+        num_bdigits = BIGNUM_LEN(val);
+    }
+
+    return bary_pack(sign, ds, num_bdigits, words, numwords, wordsize, nails, flags);
 }
 
-#define BNEG(b) (RSHIFT(((BDIGIT*)b)[QUAD_SIZE/SIZEOF_BDIGITS-1],BITSPERDIG-1) != 0)
+/*
+ * Import an integer from a buffer.
+ *
+ * [words] buffer to import.
+ * [numwords] the size of given buffer as number of words.
+ * [wordsize] the size of word as number of bytes.
+ * [nails] number of padding bits in a word.
+ *   Most significant nails bits of each word are ignored.
+ * [flags] bitwise or of constants which name starts "INTEGER_PACK_".
+ *
+ * flags:
+ * [INTEGER_PACK_MSWORD_FIRST] Interpret the first word as the most significant word.
+ * [INTEGER_PACK_LSWORD_FIRST] Interpret the first word as the least significant word.
+ * [INTEGER_PACK_MSBYTE_FIRST] Interpret the first byte in a word as the most significant byte in the word.
+ * [INTEGER_PACK_LSBYTE_FIRST] Interpret the first byte in a word as the least significant byte in the word.
+ * [INTEGER_PACK_NATIVE_BYTE_ORDER] INTEGER_PACK_MSBYTE_FIRST or INTEGER_PACK_LSBYTE_FIRST corresponding to the host's endian.
+ * [INTEGER_PACK_2COMP] Use 2's complement representation.
+ * [INTEGER_PACK_LITTLE_ENDIAN] Same as INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_LSBYTE_FIRST
+ * [INTEGER_PACK_BIG_ENDIAN] Same as INTEGER_PACK_MSWORD_FIRST|INTEGER_PACK_MSBYTE_FIRST
+ * [INTEGER_PACK_FORCE_BIGNUM] the result will be a Bignum
+ *   even if it is representable as a Fixnum.
+ * [INTEGER_PACK_NEGATIVE] Returns non-positive value.
+ *   (Returns non-negative value if not specified.)
+ * [INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION] Use generic implementation (for test and debug).
+ *
+ * This function returns the imported integer as Fixnum or Bignum.
+ *
+ * The range of the result value depends on INTEGER_PACK_2COMP and INTEGER_PACK_NEGATIVE.
+ *
+ * INTEGER_PACK_2COMP is not set:
+ *   0 <= val < 2**(numwords*(wordsize*CHAR_BIT-nails)) if !INTEGER_PACK_NEGATIVE
+ *   -2**(numwords*(wordsize*CHAR_BIT-nails)) < val <= 0 if INTEGER_PACK_NEGATIVE
+ *
+ * INTEGER_PACK_2COMP is set:
+ *   -2**(numwords*(wordsize*CHAR_BIT-nails)-1) <= val <= 2**(numwords*(wordsize*CHAR_BIT-nails)-1)-1 if !INTEGER_PACK_NEGATIVE
+ *   -2**(numwords*(wordsize*CHAR_BIT-nails)) <= val <= -1 if INTEGER_PACK_NEGATIVE
+ *
+ * INTEGER_PACK_2COMP without INTEGER_PACK_NEGATIVE means sign extension.
+ * INTEGER_PACK_2COMP with INTEGER_PACK_NEGATIVE mean assuming the higher bits are 1.
+ *
+ * Note that this function returns 0 when numwords is zero and
+ * INTEGER_PACK_2COMP is set but INTEGER_PACK_NEGATIVE is not set.
+ */
 
 VALUE
-rb_quad_unpack(const char *buf, int sign)
+rb_integer_unpack(const void *words, size_t numwords, size_t wordsize, size_t nails, int flags)
 {
-    VALUE big = bignew(QUAD_SIZE/SIZEOF_BDIGITS, 1);
+    VALUE val;
+    size_t num_bdigits;
+    int sign;
+    int nlp_bits;
+    BDIGIT *ds;
+    BDIGIT fixbuf[2] = { 0, 0 };
+
+    validate_integer_pack_format(numwords, wordsize, nails, flags,
+            INTEGER_PACK_MSWORD_FIRST|
+            INTEGER_PACK_LSWORD_FIRST|
+            INTEGER_PACK_MSBYTE_FIRST|
+            INTEGER_PACK_LSBYTE_FIRST|
+            INTEGER_PACK_NATIVE_BYTE_ORDER|
+            INTEGER_PACK_2COMP|
+            INTEGER_PACK_FORCE_BIGNUM|
+            INTEGER_PACK_NEGATIVE|
+            INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION);
+
+    num_bdigits = integer_unpack_num_bdigits(numwords, wordsize, nails, &nlp_bits);
+
+    if (LONG_MAX-1 < num_bdigits)
+        rb_raise(rb_eArgError, "too big to unpack as an integer");
+    if (num_bdigits <= numberof(fixbuf) && !(flags & INTEGER_PACK_FORCE_BIGNUM)) {
+        val = Qfalse;
+        ds = fixbuf;
+    }
+    else {
+        val = bignew((long)num_bdigits, 0);
+        ds = BDIGITS(val);
+    }
+    sign = bary_unpack_internal(ds, num_bdigits, words, numwords, wordsize, nails, flags, nlp_bits);
+
+    if (sign == -2) {
+        if (val) {
+            big_extend_carry(val);
+        }
+        else if (num_bdigits == numberof(fixbuf)) {
+            val = bignew((long)num_bdigits+1, 0);
+	    MEMCPY(BDIGITS(val), fixbuf, BDIGIT, num_bdigits);
+            BDIGITS(val)[num_bdigits++] = 1;
+        }
+        else {
+            ds[num_bdigits++] = 1;
+        }
+    }
+
+    if (!val) {
+        BDIGIT_DBL u = fixbuf[0] + BIGUP(fixbuf[1]);
+        if (u == 0)
+            return LONG2FIX(0);
+	if (0 < sign && POSFIXABLE(u))
+            return LONG2FIX(u);
+	if (sign < 0 && BDIGIT_MSB(fixbuf[1]) == 0 &&
+                NEGFIXABLE(-(BDIGIT_DBL_SIGNED)u))
+            return LONG2FIX(-(BDIGIT_DBL_SIGNED)u);
+        val = bignew((long)num_bdigits, 0 <= sign);
+        MEMCPY(BDIGITS(val), fixbuf, BDIGIT, num_bdigits);
+    }
+
+    if ((flags & INTEGER_PACK_FORCE_BIGNUM) && sign != 0 &&
+        bary_zero_p(BDIGITS(val), BIGNUM_LEN(val)))
+        sign = 0;
+    BIGNUM_SET_SIGN(val, 0 <= sign);
+
+    if (flags & INTEGER_PACK_FORCE_BIGNUM)
+        return bigtrunc(val);
+    return bignorm(val);
+}
 
-    memcpy((char*)BDIGITS(big), buf, QUAD_SIZE);
-    if (sign && BNEG(buf)) {
-	long len = QUAD_SIZE;
-	char *tmp = (char*)BDIGITS(big);
+#define conv_digit(c) (ruby_digit36_to_number_table[(unsigned char)(c)])
 
-	RBIGNUM_SET_SIGN(big, 0);
-	while (len--) {
-	    *tmp = ~*tmp;
-	    tmp++;
+NORETURN(static inline void invalid_radix(int base));
+NORETURN(static inline void invalid_integer(VALUE s));
+
+static inline int
+valid_radix_p(int base)
+{
+    return (1 < base && base <= 36);
+}
+
+static inline void
+invalid_radix(int base)
+{
+    rb_raise(rb_eArgError, "invalid radix %d", base);
+}
+
+static inline void
+invalid_integer(VALUE s)
+{
+    rb_raise(rb_eArgError, "invalid value for Integer(): %+"PRIsVALUE, s);
+}
+
+static int
+str2big_scan_digits(const char *s, const char *str, int base, int badcheck, size_t *num_digits_p, ssize_t *len_p)
+{
+    char nondigit = 0;
+    size_t num_digits = 0;
+    const char *digits_start = str;
+    const char *digits_end = str;
+    ssize_t len = *len_p;
+
+    int c;
+
+    if (!len) {
+	*num_digits_p = 0;
+	*len_p = 0;
+	return TRUE;
+    }
+
+    if (badcheck && *str == '_') return FALSE;
+
+    while ((c = *str++) != 0) {
+	if (c == '_') {
+	    if (nondigit) {
+                if (badcheck) return FALSE;
+		break;
+	    }
+	    nondigit = (char) c;
+	}
+	else if ((c = conv_digit(c)) < 0 || c >= base) {
+	    break;
+	}
+	else {
+	    nondigit = 0;
+	    num_digits++;
+	    digits_end = str;
+	}
+	if (len > 0 && !--len) break;
+    }
+    if (badcheck && nondigit) return FALSE;
+    if (badcheck && len) {
+	str--;
+	while (*str && ISSPACE(*str)) {
+	    str++;
+	    if (len > 0 && !--len) break;
+	}
+	if (len && *str) {
+	    return FALSE;
 	}
     }
+    *num_digits_p = num_digits;
+    *len_p = digits_end - digits_start;
+    return TRUE;
+}
+
+static VALUE
+str2big_poweroftwo(
+    int sign,
+    const char *digits_start,
+    const char *digits_end,
+    size_t num_digits,
+    int bits_per_digit)
+{
+    BDIGIT *dp;
+    BDIGIT_DBL dd;
+    int numbits;
 
-    return bignorm(big);
+    size_t num_bdigits;
+    const char *p;
+    int c;
+    VALUE z;
+
+    num_bdigits = (num_digits / BITSPERDIG) * bits_per_digit + roomof((num_digits % BITSPERDIG) * bits_per_digit, BITSPERDIG);
+    z = bignew(num_bdigits, sign);
+    dp = BDIGITS(z);
+    dd = 0;
+    numbits = 0;
+    for (p = digits_end; digits_start < p; p--) {
+        if ((c = conv_digit(p[-1])) < 0)
+            continue;
+        dd |= (BDIGIT_DBL)c << numbits;
+        numbits += bits_per_digit;
+        if (BITSPERDIG <= numbits) {
+            *dp++ = BIGLO(dd);
+            dd = BIGDN(dd);
+            numbits -= BITSPERDIG;
+        }
+    }
+    if (numbits) {
+        *dp++ = BIGLO(dd);
+    }
+    assert((size_t)(dp - BDIGITS(z)) == num_bdigits);
+
+    return z;
 }
 
+static VALUE
+str2big_normal(
+    int sign,
+    const char *digits_start,
+    const char *digits_end,
+    size_t num_bdigits,
+    int base)
+{
+    size_t blen = 1;
+    BDIGIT *zds;
+    BDIGIT_DBL num;
+
+    size_t i;
+    const char *p;
+    int c;
+    VALUE z;
+
+    z = bignew(num_bdigits, sign);
+    zds = BDIGITS(z);
+    BDIGITS_ZERO(zds, num_bdigits);
+
+    for (p = digits_start; p < digits_end; p++) {
+        if ((c = conv_digit(*p)) < 0)
+            continue;
+        num = c;
+        i = 0;
+        for (;;) {
+            while (i<blen) {
+                num += (BDIGIT_DBL)zds[i]*base;
+                zds[i++] = BIGLO(num);
+                num = BIGDN(num);
+            }
+            if (num) {
+                blen++;
+                continue;
+            }
+            break;
+        }
+        assert(blen <= num_bdigits);
+    }
+
+    return z;
+}
+
+static VALUE
+str2big_karatsuba(
+    int sign,
+    const char *digits_start,
+    const char *digits_end,
+    size_t num_digits,
+    size_t num_bdigits,
+    int digits_per_bdigits_dbl,
+    int base)
+{
+    VALUE powerv;
+    size_t unit;
+    VALUE tmpuv = 0;
+    BDIGIT *uds, *vds, *tds;
+    BDIGIT_DBL dd;
+    BDIGIT_DBL current_base;
+    int m;
+    int power_level = 0;
+
+    size_t i;
+    const char *p;
+    int c;
+    VALUE z;
+
+    uds = ALLOCV_N(BDIGIT, tmpuv, 2*num_bdigits);
+    vds = uds + num_bdigits;
+
+    powerv = power_cache_get_power(base, power_level, NULL);
+
+    i = 0;
+    dd = 0;
+    current_base = 1;
+    m = digits_per_bdigits_dbl;
+    if (num_digits < (size_t)m)
+        m = (int)num_digits;
+    for (p = digits_end; digits_start < p; p--) {
+        if ((c = conv_digit(p[-1])) < 0)
+            continue;
+        dd = dd + c * current_base;
+        current_base *= base;
+        num_digits--;
+        m--;
+        if (m == 0) {
+            uds[i++] = BIGLO(dd);
+            uds[i++] = (BDIGIT)BIGDN(dd);
+            dd = 0;
+            m = digits_per_bdigits_dbl;
+            if (num_digits < (size_t)m)
+                m = (int)num_digits;
+            current_base = 1;
+        }
+    }
+    assert(i == num_bdigits);
+    for (unit = 2; unit < num_bdigits; unit *= 2) {
+        for (i = 0; i < num_bdigits; i += unit*2) {
+            if (2*unit <= num_bdigits - i) {
+                bary_mul(vds+i, unit*2, BDIGITS(powerv), BIGNUM_LEN(powerv), uds+i+unit, unit);
+                bary_add(vds+i, unit*2, vds+i, unit*2, uds+i, unit);
+            }
+            else if (unit <= num_bdigits - i) {
+                bary_mul(vds+i, num_bdigits-i, BDIGITS(powerv), BIGNUM_LEN(powerv), uds+i+unit, num_bdigits-(i+unit));
+                bary_add(vds+i, num_bdigits-i, vds+i, num_bdigits-i, uds+i, unit);
+            }
+            else {
+                MEMCPY(vds+i, uds+i, BDIGIT, num_bdigits-i);
+            }
+        }
+        power_level++;
+        powerv = power_cache_get_power(base, power_level, NULL);
+        tds = vds;
+        vds = uds;
+        uds = tds;
+    }
+    BARY_TRUNC(uds, num_bdigits);
+    z = bignew(num_bdigits, sign);
+    MEMCPY(BDIGITS(z), uds, BDIGIT, num_bdigits);
+
+    if (tmpuv)
+        ALLOCV_END(tmpuv);
+
+    return z;
+}
+
+#ifdef USE_GMP
+static VALUE
+str2big_gmp(
+    int sign,
+    const char *digits_start,
+    const char *digits_end,
+    size_t num_digits,
+    size_t num_bdigits,
+    int base)
+{
+    char *buf, *p;
+    const char *q;
+    VALUE tmps;
+    mpz_t mz;
+    VALUE z;
+    BDIGIT *zds;
+    size_t zn, count;
+
+    buf = ALLOCV_N(char, tmps, num_digits+1);
+    p = buf;
+    for (q = digits_start; q < digits_end; q++) {
+        if (conv_digit(*q) < 0)
+            continue;
+        *p++ = *q;
+    }
+    *p = '\0';
+
+    mpz_init(mz);
+    mpz_set_str(mz, buf, base);
+    zn = num_bdigits;
+    z = bignew(zn, sign);
+    zds = BDIGITS(z);
+    bdigits_from_mpz(mz, BDIGITS(z), &count);
+    BDIGITS_ZERO(zds+count, zn-count);
+    mpz_clear(mz);
+
+    if (tmps)
+        ALLOCV_END(tmps);
+
+    return z;
+}
 #endif
 
+static VALUE rb_cstr_parse_inum(const char *str, ssize_t len, char **endp, int base);
+
+/*
+ * Parse +str+ as Ruby Integer, i.e., underscores, 0d and 0b prefixes.
+ *
+ * str:      pointer to the string to be parsed.
+ *	     should be NUL-terminated.
+ * base:     base of conversion, must be 2..36, or -36..0.
+ *           if +base+ > 0, the conversion is done according to the +base+
+ *           and unmatched prefix is parsed as a part of the result if
+ *           present.
+ *           if +base+ <= 0, the conversion is done according to the
+ *           prefix if present, in base <code>-base</code> if +base+ < -1,
+ *           or in base 10.
+ * badcheck: if non-zero, +ArgumentError+ is raised when +str+ is not
+ *           valid as an Integer.  if zero, Fixnum 0 is returned in
+ *           that case.
+ */
 VALUE
 rb_cstr_to_inum(const char *str, int base, int badcheck)
 {
-    const char *s = str;
     char *end;
-    char sign = 1, nondigit = 0;
-    int c;
-    BDIGIT_DBL num;
-    long len, blen = 1;
-    long i;
-    VALUE z;
-    BDIGIT *zds;
+    VALUE ret = rb_cstr_parse_inum(str, -1, (badcheck ? NULL : &end), base);
+    if (NIL_P(ret)) {
+	if (badcheck) rb_invalid_str(str, "Integer()");
+	ret = INT2FIX(0);
+    }
+    return ret;
+}
+
+/*
+ * Parse +str+ as Ruby Integer, i.e., underscores, 0d and 0b prefixes.
+ *
+ * str:  pointer to the string to be parsed.
+ *       should be NUL-terminated if +len+ is negative.
+ * len:  length of +str+ if >= 0.  if +len+ is negative, +str+ should
+ *       be NUL-terminated.
+ * endp: if non-NULL, the address after parsed part is stored.  if
+ *       NULL, Qnil is returned when +str+ is not valid as an Integer.
+ * ndigits: if non-NULL, the number of parsed digits is stored.
+ * base: see +rb_cstr_to_inum+
+ * flags: bitwise OR of below flags:
+ *       RB_INT_PARSE_SIGN: allow preceding spaces and +/- sign
+ *       RB_INT_PARSE_UNDERSCORE: allow an underscore between digits
+ *       RB_INT_PARSE_PREFIX: allow preceding prefix
+ */
 
-#define conv_digit(c) \
-    (!ISASCII(c) ? -1 : \
-     ISDIGIT(c) ? ((c) - '0') : \
-     ISLOWER(c) ? ((c) - 'a' + 10) : \
-     ISUPPER(c) ? ((c) - 'A' + 10) : \
-     -1)
+VALUE
+rb_int_parse_cstr(const char *str, ssize_t len, char **endp, size_t *ndigits,
+		  int base, int flags)
+{
+    const char *const s = str;
+    char sign = 1;
+    int c;
+    VALUE z = Qnil;
+
+    unsigned long val;
+    int ov;
+
+    const char *digits_start, *digits_end;
+    size_t num_digits = 0;
+    size_t num_bdigits;
+    const ssize_t len0 = len;
+    const int badcheck = !endp;
+
+#define ADV(n) do {\
+	if (len > 0 && len <= (n)) goto bad; \
+	str += (n); \
+	len -= (n); \
+    } while (0)
+#define ASSERT_LEN() do {\
+	assert(len != 0); \
+	if (len0 >= 0) assert(s + len0 == str + len); \
+    } while (0)
 
     if (!str) {
-	if (badcheck) goto bad;
-	return INT2FIX(0);
+        goto bad;
     }
-    while (ISSPACE(*str)) str++;
+    if (len && (flags & RB_INT_PARSE_SIGN)) {
+	while (ISSPACE(*str)) ADV(1);
 
-    if (str[0] == '+') {
-	str++;
-    }
-    else if (str[0] == '-') {
-	str++;
-	sign = 0;
-    }
-    if (str[0] == '+' || str[0] == '-') {
-	if (badcheck) goto bad;
-	return INT2FIX(0);
+	if (str[0] == '+') {
+	    ADV(1);
+	}
+	else if (str[0] == '-') {
+	    ADV(1);
+	    sign = 0;
+	}
+	ASSERT_LEN();
     }
     if (base <= 0) {
-	if (str[0] == '0') {
+	if (str[0] == '0' && len > 1) {
 	    switch (str[1]) {
 	      case 'x': case 'X':
 		base = 16;
+		ADV(2);
 		break;
 	      case 'b': case 'B':
 		base = 2;
+		ADV(2);
 		break;
 	      case 'o': case 'O':
 		base = 8;
+		ADV(2);
 		break;
 	      case 'd': case 'D':
 		base = 10;
+		ADV(2);
 		break;
 	      default:
 		base = 8;
@@ -461,75 +4114,75 @@ rb_cstr_to_inum(const char *str, int base, int badcheck)
 	    base = 10;
 	}
     }
-    switch (base) {
-      case 2:
-	len = 1;
+    else if (len == 1 || !(flags & RB_INT_PARSE_PREFIX)) {
+	/* no prefix */
+    }
+    else if (base == 2) {
 	if (str[0] == '0' && (str[1] == 'b'||str[1] == 'B')) {
-	    str += 2;
+	    ADV(2);
 	}
-	break;
-      case 3:
-	len = 2;
-	break;
-      case 8:
+    }
+    else if (base == 8) {
 	if (str[0] == '0' && (str[1] == 'o'||str[1] == 'O')) {
-	    str += 2;
+	    ADV(2);
 	}
-      case 4: case 5: case 6: case 7:
-	len = 3;
-	break;
-      case 10:
+    }
+    else if (base == 10) {
 	if (str[0] == '0' && (str[1] == 'd'||str[1] == 'D')) {
-	    str += 2;
+	    ADV(2);
 	}
-      case 9: case 11: case 12: case 13: case 14: case 15:
-	len = 4;
-	break;
-      case 16:
-	len = 4;
+    }
+    else if (base == 16) {
 	if (str[0] == '0' && (str[1] == 'x'||str[1] == 'X')) {
-	    str += 2;
-	}
-	break;
-      default:
-	if (base < 2 || 36 < base) {
-	    rb_raise(rb_eArgError, "invalid radix %d", base);
+	    ADV(2);
 	}
-	if (base <= 32) {
-	    len = 5;
-	}
-	else {
-	    len = 6;
-	}
-	break;
     }
-    if (*str == '0') {		/* squeeze preceding 0s */
+    if (!valid_radix_p(base)) {
+        invalid_radix(base);
+    }
+    if (!len) goto bad;
+    num_digits = str - s;
+    if (*str == '0' && len != 1) { /* squeeze preceding 0s */
 	int us = 0;
-	while ((c = *++str) == '0' || c == '_') {
+	const char *end = len < 0 ? NULL : str + len;
+	++num_digits;
+	while ((c = *++str) == '0' ||
+	       ((flags & RB_INT_PARSE_UNDERSCORE) && c == '_')) {
 	    if (c == '_') {
 		if (++us >= 2)
 		    break;
-	    } else
+	    }
+	    else {
+		++num_digits;
 		us = 0;
+	    }
+	    if (str == end) break;
 	}
-	if (!(c = *str) || ISSPACE(c)) --str;
+	if (!c || ISSPACE(c)) --str;
+	if (end) len = end - str;
+	ASSERT_LEN();
     }
     c = *str;
     c = conv_digit(c);
     if (c < 0 || c >= base) {
-	if (badcheck) goto bad;
-	return INT2FIX(0);
-    }
-    len *= strlen(str)*sizeof(char);
-
-    if (len <= (sizeof(long)*CHAR_BIT)) {
-	unsigned long val = STRTOUL(str, &end, base);
-
-	if (str < end && *end == '_') goto bigparse;
+	if (!badcheck && num_digits) z = INT2FIX(0);
+	goto bad;
+    }
+
+    if (ndigits) *ndigits = num_digits;
+    val = ruby_scan_digits(str, len, base, &num_digits, &ov);
+    if (!ov) {
+	const char *end = &str[num_digits];
+	if (num_digits > 0 && *end == '_' && (flags & RB_INT_PARSE_UNDERSCORE))
+	    goto bigparse;
+	if (endp) *endp = (char *)end;
+	if (ndigits) *ndigits += num_digits;
 	if (badcheck) {
-	    if (end == str) goto bad; /* no number */
-	    while (*end && ISSPACE(*end)) end++;
-	    if (*end) goto bad;	      /* trailing garbage */
+	    if (num_digits == 0) return Qnil; /* no number */
+	    while (len < 0 ? *end : end < str + len) {
+		if (!ISSPACE(*end)) return Qnil; /* trailing garbage */
+		end++;
+	    }
 	}
 
 	if (POSFIXABLE(val)) {
@@ -541,105 +4194,272 @@ rb_cstr_to_inum(const char *str, int base, int badcheck)
 	}
 	else {
 	    VALUE big = rb_uint2big(val);
-	    RBIGNUM_SET_SIGN(big, sign);
+	    BIGNUM_SET_SIGN(big, sign);
 	    return bignorm(big);
 	}
     }
+
   bigparse:
-    len = (len/BITSPERDIG)+1;
-    if (badcheck && *str == '_') goto bad;
+    digits_start = str;
+    if (!str2big_scan_digits(s, str, base, badcheck, &num_digits, &len))
+	goto bad;
+    if (endp) *endp = (char *)(str + len);
+    if (ndigits) *ndigits += num_digits;
+    digits_end = digits_start + len;
 
-    z = bignew(len, sign);
-    zds = BDIGITS(z);
-    for (i=len;i--;) zds[i]=0;
-    while ((c = *str++) != 0) {
-	if (c == '_') {
-	    if (nondigit) {
-		if (badcheck) goto bad;
-		break;
-	    }
-	    nondigit = c;
-	    continue;
-	}
-	else if ((c = conv_digit(c)) < 0) {
-	    break;
-	}
-	if (c >= base) break;
-	nondigit = 0;
-	i = 0;
-	num = c;
-	for (;;) {
-	    while (i<blen) {
-		num += (BDIGIT_DBL)zds[i]*base;
-		zds[i++] = BIGLO(num);
-		num = BIGDN(num);
-	    }
-	    if (num) {
-		blen++;
-		continue;
-	    }
-	    break;
-	}
+    if (POW2_P(base)) {
+        z = str2big_poweroftwo(sign, digits_start, digits_end, num_digits,
+			       bit_length(base-1));
     }
-    if (badcheck) {
-	str--;
-	if (s+1 < str && str[-1] == '_') goto bad;
-	while (*str && ISSPACE(*str)) str++;
-	if (*str) {
-	  bad:
-	    rb_invalid_str(s, "Integer");
-	}
+    else {
+        int digits_per_bdigits_dbl;
+        maxpow_in_bdigit_dbl(base, &digits_per_bdigits_dbl);
+        num_bdigits = roomof(num_digits, digits_per_bdigits_dbl)*2;
+
+#ifdef USE_GMP
+        if (GMP_STR2BIG_DIGITS < num_bdigits) {
+            z = str2big_gmp(sign, digits_start, digits_end, num_digits,
+                    num_bdigits, base);
+        }
+        else
+#endif
+        if (num_bdigits < KARATSUBA_MUL_DIGITS) {
+            z = str2big_normal(sign, digits_start, digits_end,
+                    num_bdigits, base);
+        }
+        else {
+            z = str2big_karatsuba(sign, digits_start, digits_end, num_digits,
+                    num_bdigits, digits_per_bdigits_dbl, base);
+        }
     }
 
     return bignorm(z);
+
+  bad:
+    if (endp) *endp = (char *)str;
+    if (ndigits) *ndigits = num_digits;
+    return z;
+}
+
+static VALUE
+rb_cstr_parse_inum(const char *str, ssize_t len, char **endp, int base)
+{
+    return rb_int_parse_cstr(str, len, endp, NULL, base,
+			     RB_INT_PARSE_DEFAULT);
 }
 
 VALUE
-rb_str_to_inum(VALUE str, int base, int badcheck)
+rb_str_convert_to_inum(VALUE str, int base, int badcheck, int raise_exception)
 {
-    char *s;
+    VALUE ret;
+    const char *s;
     long len;
+    char *end;
 
     StringValue(str);
-    if (badcheck) {
-	s = StringValueCStr(str);
+    rb_must_asciicompat(str);
+    RSTRING_GETMEM(str, s, len);
+    ret = rb_cstr_parse_inum(s, len, (badcheck ? NULL : &end), base);
+    if (NIL_P(ret)) {
+        if (badcheck) {
+            if (!raise_exception) return Qnil;
+            invalid_integer(str);
+        }
+        ret = INT2FIX(0);
+    }
+    return ret;
+}
+
+VALUE
+rb_str_to_inum(VALUE str, int base, int badcheck)
+{
+    return rb_str_convert_to_inum(str, base, badcheck, TRUE);
+}
+
+VALUE
+rb_str2big_poweroftwo(VALUE arg, int base, int badcheck)
+{
+    int positive_p = 1;
+    const char *s, *str;
+    const char *digits_start, *digits_end;
+    size_t num_digits;
+    ssize_t len;
+    VALUE z;
+
+    if (!valid_radix_p(base) || !POW2_P(base)) {
+        invalid_radix(base);
     }
-    else {
-	s = RSTRING_PTR(str);
+
+    rb_must_asciicompat(arg);
+    s = str = StringValueCStr(arg);
+    len = RSTRING_LEN(arg);
+    if (*str == '-') {
+	len--;
+        str++;
+        positive_p = 0;
     }
-    if (s) {
-	len = RSTRING_LEN(str);
-	if (s[len]) {		/* no sentinel somehow */
-	    char *p = ALLOCA_N(char, len+1);
 
-	    MEMCPY(p, s, char, len);
-	    p[len] = '\0';
-	    s = p;
-	}
+    digits_start = str;
+    if (!str2big_scan_digits(s, str, base, badcheck, &num_digits, &len))
+	invalid_integer(arg);
+    digits_end = digits_start + len;
+
+    z = str2big_poweroftwo(positive_p, digits_start, digits_end, num_digits,
+            bit_length(base-1));
+
+    RB_GC_GUARD(arg);
+
+    return bignorm(z);
+}
+
+VALUE
+rb_str2big_normal(VALUE arg, int base, int badcheck)
+{
+    int positive_p = 1;
+    const char *s, *str;
+    const char *digits_start, *digits_end;
+    size_t num_digits;
+    ssize_t len;
+    VALUE z;
+
+    int digits_per_bdigits_dbl;
+    size_t num_bdigits;
+
+    if (!valid_radix_p(base)) {
+        invalid_radix(base);
+    }
+
+    rb_must_asciicompat(arg);
+    s = str = StringValuePtr(arg);
+    len = RSTRING_LEN(arg);
+    if (len > 0 && *str == '-') {
+	len--;
+        str++;
+        positive_p = 0;
     }
-    return rb_cstr_to_inum(s, base, badcheck);
+
+    digits_start = str;
+    if (!str2big_scan_digits(s, str, base, badcheck, &num_digits, &len))
+	invalid_integer(arg);
+    digits_end = digits_start + len;
+
+    maxpow_in_bdigit_dbl(base, &digits_per_bdigits_dbl);
+    num_bdigits = roomof(num_digits, digits_per_bdigits_dbl)*2;
+
+    z = str2big_normal(positive_p, digits_start, digits_end,
+            num_bdigits, base);
+
+    RB_GC_GUARD(arg);
+
+    return bignorm(z);
 }
 
+VALUE
+rb_str2big_karatsuba(VALUE arg, int base, int badcheck)
+{
+    int positive_p = 1;
+    const char *s, *str;
+    const char *digits_start, *digits_end;
+    size_t num_digits;
+    ssize_t len;
+    VALUE z;
+
+    int digits_per_bdigits_dbl;
+    size_t num_bdigits;
+
+    if (!valid_radix_p(base)) {
+        invalid_radix(base);
+    }
+
+    rb_must_asciicompat(arg);
+    s = str = StringValuePtr(arg);
+    len = RSTRING_LEN(arg);
+    if (len > 0 && *str == '-') {
+	len--;
+        str++;
+        positive_p = 0;
+    }
+
+    digits_start = str;
+    if (!str2big_scan_digits(s, str, base, badcheck, &num_digits, &len))
+	invalid_integer(arg);
+    digits_end = digits_start + len;
+
+    maxpow_in_bdigit_dbl(base, &digits_per_bdigits_dbl);
+    num_bdigits = roomof(num_digits, digits_per_bdigits_dbl)*2;
+
+    z = str2big_karatsuba(positive_p, digits_start, digits_end, num_digits,
+            num_bdigits, digits_per_bdigits_dbl, base);
+
+    RB_GC_GUARD(arg);
+
+    return bignorm(z);
+}
+
+#ifdef USE_GMP
+VALUE
+rb_str2big_gmp(VALUE arg, int base, int badcheck)
+{
+    int positive_p = 1;
+    const char *s, *str;
+    const char *digits_start, *digits_end;
+    size_t num_digits;
+    ssize_t len;
+    VALUE z;
+
+    int digits_per_bdigits_dbl;
+    size_t num_bdigits;
+
+    if (!valid_radix_p(base)) {
+        invalid_radix(base);
+    }
+
+    rb_must_asciicompat(arg);
+    s = str = StringValuePtr(arg);
+    len = RSTRING_LEN(arg);
+    if (len > 0 && *str == '-') {
+	len--;
+        str++;
+        positive_p = 0;
+    }
+
+    digits_start = str;
+    if (!str2big_scan_digits(s, str, base, badcheck, &num_digits, &len))
+	invalid_integer(arg);
+    digits_end = digits_start + len;
+
+    maxpow_in_bdigit_dbl(base, &digits_per_bdigits_dbl);
+    num_bdigits = roomof(num_digits, digits_per_bdigits_dbl)*2;
+
+    z = str2big_gmp(positive_p, digits_start, digits_end, num_digits, num_bdigits, base);
+
+    RB_GC_GUARD(arg);
+
+    return bignorm(z);
+}
+#endif
+
 #if HAVE_LONG_LONG
 
 static VALUE
 rb_ull2big(unsigned LONG_LONG n)
 {
-    BDIGIT_DBL num = n;
-    long i = 0;
-    BDIGIT *digits;
-    VALUE big;
+    long i;
+    VALUE big = bignew(bdigit_roomof(SIZEOF_LONG_LONG), 1);
+    BDIGIT *digits = BDIGITS(big);
 
-    big = bignew(DIGSPERLL, 1);
-    digits = BDIGITS(big);
-    while (i < DIGSPERLL) {
-	digits[i++] = BIGLO(num);
-	num = BIGDN(num);
+#if SIZEOF_BDIGIT >= SIZEOF_LONG_LONG
+    digits[0] = n;
+#else
+    for (i = 0; i < bdigit_roomof(SIZEOF_LONG_LONG); i++) {
+	digits[i] = BIGLO(n);
+	n = BIGDN(n);
     }
+#endif
 
-    i = DIGSPERLL;
+    i = bdigit_roomof(SIZEOF_LONG_LONG);
     while (i-- && !digits[i]) ;
-    RBIGNUM_SET_LEN(big, i+1);
+    BIGNUM_SET_LEN(big, i+1);
     return big;
 }
 
@@ -647,15 +4467,19 @@ static VALUE
 rb_ll2big(LONG_LONG n)
 {
     long neg = 0;
+    unsigned LONG_LONG u;
     VALUE big;
 
     if (n < 0) {
-	n = -n;
+        u = 1 + (unsigned LONG_LONG)(-(n + 1)); /* u = -n avoiding overflow */
 	neg = 1;
     }
-    big = rb_ull2big(n);
+    else {
+        u = n;
+    }
+    big = rb_ull2big(u);
     if (neg) {
-	RBIGNUM_SET_SIGN(big, 0);
+	BIGNUM_SET_NEGATIVE_SIGN(big);
     }
     return big;
 }
@@ -676,6 +4500,46 @@ rb_ll2inum(LONG_LONG n)
 
 #endif  /* HAVE_LONG_LONG */
 
+#ifdef HAVE_INT128_T
+static VALUE
+rb_uint128t2big(uint128_t n)
+{
+    long i;
+    VALUE big = bignew(bdigit_roomof(SIZEOF_INT128_T), 1);
+    BDIGIT *digits = BDIGITS(big);
+
+    for (i = 0; i < bdigit_roomof(SIZEOF_INT128_T); i++) {
+	digits[i] = BIGLO(RSHIFT(n ,BITSPERDIG*i));
+    }
+
+    i = bdigit_roomof(SIZEOF_INT128_T);
+    while (i-- && !digits[i]) ;
+    BIGNUM_SET_LEN(big, i+1);
+    return big;
+}
+
+MJIT_FUNC_EXPORTED VALUE
+rb_int128t2big(int128_t n)
+{
+    int neg = 0;
+    uint128_t u;
+    VALUE big;
+
+    if (n < 0) {
+        u = 1 + (uint128_t)(-(n + 1)); /* u = -n avoiding overflow */
+	neg = 1;
+    }
+    else {
+        u = n;
+    }
+    big = rb_uint128t2big(u);
+    if (neg) {
+	BIGNUM_SET_NEGATIVE_SIGN(big);
+    }
+    return big;
+}
+#endif
+
 VALUE
 rb_cstr2inum(const char *str, int base)
 {
@@ -688,377 +4552,603 @@ rb_str2inum(VALUE str, int base)
     return rb_str_to_inum(str, base, base==0);
 }
 
-const char ruby_digitmap[] = "0123456789abcdefghijklmnopqrstuvwxyz";
-
-static VALUE bigsqr(VALUE x);
-static void bigdivmod(VALUE x, VALUE y, VALUE *divp, VALUE *modp);
-
-#define POW2_P(x) (((x)&((x)-1))==0)
-
-static inline int
-ones(register unsigned long x)
+static VALUE
+big_shift3(VALUE x, int lshift_p, size_t shift_numdigits, int shift_numbits)
 {
-#if SIZEOF_LONG == 8
-# define MASK_55 0x5555555555555555UL
-# define MASK_33 0x3333333333333333UL
-# define MASK_0f 0x0f0f0f0f0f0f0f0fUL
-#else
-# define MASK_55 0x55555555UL
-# define MASK_33 0x33333333UL
-# define MASK_0f 0x0f0f0f0fUL
-#endif
-    x -= (x >> 1) & MASK_55;
-    x = ((x >> 2) & MASK_33) + (x & MASK_33);
-    x = ((x >> 4) + x) & MASK_0f;
-    x += (x >> 8);
-    x += (x >> 16);
-#if SIZEOF_LONG == 8
-    x += (x >> 32);
-#endif
-    return (int)(x & 0x7f);
-#undef MASK_0f
-#undef MASK_33
-#undef MASK_55
+    BDIGIT *xds, *zds;
+    long s1;
+    int s2;
+    VALUE z;
+    long xn;
+
+    if (lshift_p) {
+        if (LONG_MAX < shift_numdigits) {
+            rb_raise(rb_eArgError, "too big number");
+        }
+        s1 = shift_numdigits;
+        s2 = shift_numbits;
+        xn = BIGNUM_LEN(x);
+        z = bignew(xn+s1+1, BIGNUM_SIGN(x));
+        zds = BDIGITS(z);
+        BDIGITS_ZERO(zds, s1);
+        xds = BDIGITS(x);
+        zds[xn+s1] = bary_small_lshift(zds+s1, xds, xn, s2);
+    }
+    else {
+        long zn;
+        BDIGIT hibitsx;
+        if (LONG_MAX < shift_numdigits || (size_t)BIGNUM_LEN(x) <= shift_numdigits) {
+            if (BIGNUM_POSITIVE_P(x) ||
+                bary_zero_p(BDIGITS(x), BIGNUM_LEN(x)))
+                return INT2FIX(0);
+            else
+                return INT2FIX(-1);
+        }
+        s1 = shift_numdigits;
+        s2 = shift_numbits;
+        hibitsx = abs2twocomp(&x, &xn);
+        xds = BDIGITS(x);
+        if (xn <= s1) {
+            return hibitsx ? INT2FIX(-1) : INT2FIX(0);
+        }
+        zn = xn - s1;
+        z = bignew(zn, 0);
+        zds = BDIGITS(z);
+        bary_small_rshift(zds, xds+s1, zn, s2, hibitsx != 0 ? BDIGMAX : 0);
+        twocomp2abs_bang(z, hibitsx != 0);
+    }
+    RB_GC_GUARD(x);
+    return z;
 }
 
-static inline unsigned long
-next_pow2(register unsigned long x)
+static VALUE
+big_shift2(VALUE x, int lshift_p, VALUE y)
 {
-    x |= x >> 1;
-    x |= x >> 2;
-    x |= x >> 4;
-    x |= x >> 8;
-    x |= x >> 16;
-#if SIZEOF_LONG == 8
-    x |= x >> 32;
-#endif
-    return x + 1;
+    int sign;
+    size_t lens[2];
+    size_t shift_numdigits;
+    int shift_numbits;
+
+    assert(POW2_P(CHAR_BIT));
+    assert(POW2_P(BITSPERDIG));
+
+    if (BIGZEROP(x))
+        return INT2FIX(0);
+    sign = rb_integer_pack(y, lens, numberof(lens), sizeof(size_t), 0,
+        INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_NATIVE_BYTE_ORDER);
+    if (sign < 0) {
+        lshift_p = !lshift_p;
+        sign = -sign;
+    }
+    if (lshift_p) {
+        if (1 < sign || CHAR_BIT <= lens[1])
+            rb_raise(rb_eRangeError, "shift width too big");
+    }
+    else {
+        if (1 < sign || CHAR_BIT <= lens[1])
+            return BIGNUM_POSITIVE_P(x) ? INT2FIX(0) : INT2FIX(-1);
+    }
+    shift_numbits = (int)(lens[0] & (BITSPERDIG-1));
+    shift_numdigits = (lens[0] >> bit_length(BITSPERDIG-1)) |
+      (lens[1] << (CHAR_BIT*SIZEOF_SIZE_T - bit_length(BITSPERDIG-1)));
+    return big_shift3(x, lshift_p, shift_numdigits, shift_numbits);
 }
 
-static inline int
-floor_log2(register unsigned long x)
+static VALUE
+big_lshift(VALUE x, unsigned long shift)
 {
-    x |= x >> 1;
-    x |= x >> 2;
-    x |= x >> 4;
-    x |= x >> 8;
-    x |= x >> 16;
-#if SIZEOF_LONG == 8
-    x |= x >> 32;
-#endif
-    return (int)ones(x) - 1;
+    long s1 = shift/BITSPERDIG;
+    int s2 = (int)(shift%BITSPERDIG);
+    return big_shift3(x, 1, s1, s2);
 }
 
-static inline int
-ceil_log2(register unsigned long x)
+static VALUE
+big_rshift(VALUE x, unsigned long shift)
 {
-    return floor_log2(x) + !POW2_P(x);
+    long s1 = shift/BITSPERDIG;
+    int s2 = (int)(shift%BITSPERDIG);
+    return big_shift3(x, 0, s1, s2);
 }
 
-#define LOG2_KARATSUBA_DIGITS 7
-#define KARATSUBA_DIGITS (1L<<LOG2_KARATSUBA_DIGITS)
-#define MAX_BIG2STR_TABLE_ENTRIES 64
+#define MAX_BASE36_POWER_TABLE_ENTRIES (SIZEOF_SIZE_T * CHAR_BIT + 1)
 
-static VALUE big2str_power_cache[35][MAX_BIG2STR_TABLE_ENTRIES];
+static VALUE base36_power_cache[35][MAX_BASE36_POWER_TABLE_ENTRIES];
+static size_t base36_numdigits_cache[35][MAX_BASE36_POWER_TABLE_ENTRIES];
 
 static void
 power_cache_init(void)
 {
-    int i, j;
-    for (i = 0; i < 35; ++i) {
-	for (j = 0; j < MAX_BIG2STR_TABLE_ENTRIES; ++j) {
-	    big2str_power_cache[i][j] = Qnil;
-	}
-    }
 }
 
 static inline VALUE
-power_cache_get_power0(int base, int i)
+power_cache_get_power(int base, int power_level, size_t *numdigits_ret)
 {
-    if (NIL_P(big2str_power_cache[base - 2][i])) {
-	big2str_power_cache[base - 2][i] =
-	    i == 0 ? rb_big_pow(rb_int2big(base), INT2FIX(KARATSUBA_DIGITS))
-		   : bigsqr(power_cache_get_power0(base, i - 1));
-	rb_gc_register_mark_object(big2str_power_cache[base - 2][i]);
-    }
-    return big2str_power_cache[base - 2][i];
+    /*
+     * MAX_BASE36_POWER_TABLE_ENTRIES is big enough to that
+     * base36_power_cache[base][MAX_BASE36_POWER_TABLE_ENTRIES-1] fills whole memory.
+     * So MAX_BASE36_POWER_TABLE_ENTRIES <= power_level is not possible to calculate.
+     *
+     * number-of-bytes =
+     * log256(base36_power_cache[base][MAX_BASE36_POWER_TABLE_ENTRIES-1]) =
+     * log256(maxpow_in_bdigit_dbl(base)**(2**(MAX_BASE36_POWER_TABLE_ENTRIES-1))) =
+     * log256(maxpow_in_bdigit_dbl(base)**(2**(SIZEOF_SIZE_T*CHAR_BIT))) =
+     * (2**(SIZEOF_SIZE_T*CHAR_BIT))*log256(maxpow_in_bdigit_dbl(base)) =
+     * (256**SIZEOF_SIZE_T)*log256(maxpow_in_bdigit_dbl(base)) >
+     * (256**SIZEOF_SIZE_T)*(sizeof(BDIGIT_DBL)-1) >
+     * 256**SIZEOF_SIZE_T
+     */
+    if (MAX_BASE36_POWER_TABLE_ENTRIES <= power_level)
+        rb_bug("too big power number requested: maxpow_in_bdigit_dbl(%d)**(2**%d)", base, power_level);
+
+    VALUE power = base36_power_cache[base - 2][power_level];
+    if (!power) {
+        size_t numdigits;
+        if (power_level == 0) {
+            int numdigits0;
+            BDIGIT_DBL dd = maxpow_in_bdigit_dbl(base, &numdigits0);
+            power = bignew(2, 1);
+            bdigitdbl2bary(BDIGITS(power), 2, dd);
+            numdigits = numdigits0;
+        }
+        else {
+            power = bigtrunc(bigsq(power_cache_get_power(base, power_level - 1, &numdigits)));
+            numdigits *= 2;
+        }
+        rb_obj_hide(power);
+        base36_power_cache[base - 2][power_level] = power;
+        base36_numdigits_cache[base - 2][power_level] = numdigits;
+	rb_gc_register_mark_object(power);
+    }
+    if (numdigits_ret)
+        *numdigits_ret = base36_numdigits_cache[base - 2][power_level];
+    return power;
 }
 
-static VALUE
-power_cache_get_power(int base, long n1, long* m1)
-{
-    long i, j, m;
-    VALUE t;
-
-    if (n1 <= KARATSUBA_DIGITS)
-	rb_bug("n1 > KARATSUBA_DIGITS");
+struct big2str_struct {
+    int negative;
+    int base;
+    BDIGIT_DBL hbase2;
+    int hbase2_numdigits;
+    VALUE result;
+    char *ptr;
+};
 
-    m = ceil_log2(n1);
-    if (m1) *m1 = 1 << m;
-    i = m - LOG2_KARATSUBA_DIGITS;
-    if (i >= MAX_BIG2STR_TABLE_ENTRIES)
-	i = MAX_BIG2STR_TABLE_ENTRIES - 1;
-    t = power_cache_get_power0(base, i);
+static void
+big2str_alloc(struct big2str_struct *b2s, size_t len)
+{
+    if (LONG_MAX-1 < len)
+        rb_raise(rb_eArgError, "too big number");
+    b2s->result = rb_usascii_str_new(0, (long)(len + 1)); /* plus one for sign */
+    b2s->ptr = RSTRING_PTR(b2s->result);
+    if (b2s->negative)
+        *b2s->ptr++ = '-';
+}
 
-    j = KARATSUBA_DIGITS*(1 << i);
-    while (n1 > j) {
-	t = bigsqr(t);
-	j *= 2;
+static void
+big2str_2bdigits(struct big2str_struct *b2s, BDIGIT *xds, size_t xn, size_t taillen)
+{
+    size_t j;
+    BDIGIT_DBL num;
+    char buf[SIZEOF_BDIGIT_DBL*CHAR_BIT], *p;
+    int beginning = !b2s->ptr;
+    size_t len = 0;
+
+    assert(xn <= 2);
+    num = bary2bdigitdbl(xds, xn);
+
+    if (beginning) {
+        if (num == 0)
+            return;
+        p = buf;
+        j = sizeof(buf);
+        do {
+            BDIGIT_DBL idx = num % b2s->base;
+            num /= b2s->base;
+            p[--j] = ruby_digitmap[idx];
+        } while (num);
+        len = sizeof(buf) - j;
+        big2str_alloc(b2s, len + taillen);
+	MEMCPY(b2s->ptr, buf + j, char, len);
     }
-    return t;
+    else {
+        p = b2s->ptr;
+        j = b2s->hbase2_numdigits;
+        do {
+            BDIGIT_DBL idx = num % b2s->base;
+            num /= b2s->base;
+            p[--j] = ruby_digitmap[idx];
+        } while (j);
+        len = b2s->hbase2_numdigits;
+    }
+    b2s->ptr += len;
 }
 
-/* big2str_muraken_find_n1
- *
- * Let a natural number x is given by:
- * x = 2^0 * x_0 + 2^1 * x_1 + ... + 2^(B*n_0 - 1) * x_{B*n_0 - 1},
- * where B is BITSPERDIG (i.e. BDIGITS*CHAR_BIT) and n_0 is
- * RBIGNUM_LEN(x).
- *
- * Now, we assume n_1 = min_n \{ n | 2^(B*n_0/2) <= b_1^(n_1) \}, so
- * it is realized that 2^(B*n_0) <= {b_1}^{2*n_1}, where b_1 is a
- * given radix number. And then, we have n_1 <= (B*n_0) /
- * (2*log_2(b_1)), therefore n_1 is given by ceil((B*n_0) /
- * (2*log_2(b_1))).
- */
-static long
-big2str_find_n1(VALUE x, int base)
-{
-    static const double log_2[] = {
-	1.0,              1.58496250072116, 2.0,
-	2.32192809488736, 2.58496250072116, 2.8073549220576,
-	3.0,              3.16992500144231, 3.32192809488736,
-	3.4594316186373,  3.58496250072116, 3.70043971814109,
-	3.8073549220576,  3.90689059560852, 4.0,
-	4.08746284125034, 4.16992500144231, 4.24792751344359,
-	4.32192809488736, 4.39231742277876, 4.4594316186373,
-	4.52356195605701, 4.58496250072116, 4.64385618977472,
-	4.70043971814109, 4.75488750216347, 4.8073549220576,
-	4.85798099512757, 4.90689059560852, 4.95419631038688,
-	5.0,              5.04439411935845, 5.08746284125034,
-	5.12928301694497, 5.16992500144231
-    };
-    long bits;
-
-    if (base < 2 || 36 < base)
-	rb_bug("invalid radix %d", base);
+static void
+big2str_karatsuba(struct big2str_struct *b2s, BDIGIT *xds, size_t xn, size_t wn,
+		  int power_level, size_t taillen)
+{
+    VALUE b;
+    size_t half_numdigits, lower_numdigits;
+    int lower_power_level;
+    size_t bn;
+    const BDIGIT *bds;
+    size_t len;
+
+    /*
+     * Precondition:
+     * abs(x) < maxpow**(2**power_level)
+     * where
+     *   maxpow = maxpow_in_bdigit_dbl(base, &numdigits)
+     *
+     * This function generates sequence of zeros, and then stringized abs(x) into b2s->ptr.
+     *
+     * b2s->ptr can be NULL.
+     * It is allocated when the first character is generated via big2str_alloc.
+     *
+     * The prefix zeros should be generated if and only if b2s->ptr is not NULL.
+     * When the zeros are generated, the zeros and abs(x) consists
+     * numdigits*(2**power_level) characters at total.
+     *
+     * Note:
+     * power_cache_get_power(base, power_level, &len) may not be cached yet. It should not be called.
+     * power_cache_get_power(base, power_level-1, &len) should be cached already if 0 <= power_level-1.
+     */
+
+    if (xn == 0 || bary_zero_p(xds, xn)) {
+	if (b2s->ptr) {
+            /* When x is zero, power_cache_get_power(base, power_level) should be cached already. */
+            power_cache_get_power(b2s->base, power_level, &len);
+	    memset(b2s->ptr, '0', len);
+            b2s->ptr += len;
+	}
+        return;
+    }
 
-    if (FIXNUM_P(x)) {
-	bits = (SIZEOF_LONG*CHAR_BIT - 1)/2 + 1;
+    if (power_level == 0) {
+	big2str_2bdigits(b2s, xds, xn, taillen);
+        return;
     }
-    else if (BIGZEROP(x)) {
-	return 0;
+
+    lower_power_level = power_level-1;
+    b = power_cache_get_power(b2s->base, lower_power_level, &lower_numdigits);
+    bn = BIGNUM_LEN(b);
+    bds = BDIGITS(b);
+
+    half_numdigits = lower_numdigits;
+
+    while (0 < lower_power_level &&
+            (xn < bn ||
+             (xn == bn && bary_cmp(xds, xn, bds, bn) < 0))) {
+        lower_power_level--;
+        b = power_cache_get_power(b2s->base, lower_power_level, &lower_numdigits);
+        bn = BIGNUM_LEN(b);
+        bds = BDIGITS(b);
     }
-    else if (RBIGNUM_LEN(x) >= LONG_MAX/BITSPERDIG) {
-	rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
+
+    if (lower_power_level == 0 &&
+            (xn < bn ||
+             (xn == bn && bary_cmp(xds, xn, bds, bn) < 0))) {
+        if (b2s->ptr) {
+            len = half_numdigits * 2 - lower_numdigits;
+            memset(b2s->ptr, '0', len);
+            b2s->ptr += len;
+        }
+	big2str_2bdigits(b2s, xds, xn, taillen);
     }
     else {
-	bits = BITSPERDIG*RBIGNUM_LEN(x);
+        BDIGIT *qds, *rds;
+        size_t qn, rn;
+        BDIGIT *tds;
+        int shift;
+
+        if (lower_power_level != power_level-1 && b2s->ptr) {
+            len = (half_numdigits - lower_numdigits) * 2;
+            memset(b2s->ptr, '0', len);
+            b2s->ptr += len;
+        }
+
+        shift = nlz(bds[bn-1]);
+
+        qn = xn + BIGDIVREM_EXTRA_WORDS;
+
+        if (shift == 0) {
+            /* bigdivrem_restoring will not modify y.
+             * So use bds directly.  */
+            tds = (BDIGIT *)bds;
+            xds[xn] = 0;
+        }
+        else {
+            /* bigdivrem_restoring will modify y.
+             * So use temporary buffer.  */
+            tds = xds + qn;
+            assert(qn + bn <= xn + wn);
+            bary_small_lshift(tds, bds, bn, shift);
+            xds[xn] = bary_small_lshift(xds, xds, xn, shift);
+        }
+
+        bigdivrem_restoring(xds, qn, tds, bn);
+
+        rds = xds;
+        rn = bn;
+
+        qds = xds + bn;
+        qn = qn - bn;
+
+        if (shift) {
+            bary_small_rshift(rds, rds, rn, shift, 0);
+        }
+
+        BARY_TRUNC(qds, qn);
+        assert(qn <= bn);
+        big2str_karatsuba(b2s, qds, qn, xn+wn - (rn+qn), lower_power_level, lower_numdigits+taillen);
+        BARY_TRUNC(rds, rn);
+        big2str_karatsuba(b2s, rds, rn, xn+wn - rn, lower_power_level, taillen);
     }
+}
 
-    return (long)ceil(bits/log_2[base - 2]);
+static VALUE
+big2str_base_poweroftwo(VALUE x, int base)
+{
+    int word_numbits = ffs(base) - 1;
+    size_t numwords;
+    VALUE result;
+    char *ptr;
+    numwords = rb_absint_numwords(x, word_numbits, NULL);
+    if (BIGNUM_NEGATIVE_P(x)) {
+        if (LONG_MAX-1 < numwords)
+            rb_raise(rb_eArgError, "too big number");
+        result = rb_usascii_str_new(0, 1+numwords);
+        ptr = RSTRING_PTR(result);
+        *ptr++ = BIGNUM_POSITIVE_P(x) ? '+' : '-';
+    }
+    else {
+        if (LONG_MAX < numwords)
+            rb_raise(rb_eArgError, "too big number");
+        result = rb_usascii_str_new(0, numwords);
+        ptr = RSTRING_PTR(result);
+    }
+    rb_integer_pack(x, ptr, numwords, 1, CHAR_BIT-word_numbits,
+                    INTEGER_PACK_BIG_ENDIAN);
+    while (0 < numwords) {
+        *ptr = ruby_digitmap[*(unsigned char *)ptr];
+        ptr++;
+        numwords--;
+    }
+    return result;
 }
 
-static long
-big2str_orig(VALUE x, int base, char* ptr, long len, long hbase, int trim)
+VALUE
+rb_big2str_poweroftwo(VALUE x, int base)
 {
-    long i = RBIGNUM_LEN(x), j = len;
-    BDIGIT* ds = BDIGITS(x);
+    return big2str_base_poweroftwo(x, base);
+}
 
-    while (i && j > 0) {
-	long k = i;
-	BDIGIT_DBL num = 0;
+static VALUE
+big2str_generic(VALUE x, int base)
+{
+    BDIGIT *xds;
+    size_t xn;
+    struct big2str_struct b2s_data;
+    int power_level;
+    VALUE power;
 
-	while (k--) {               /* x / hbase */
-	    num = BIGUP(num) + ds[k];
-	    ds[k] = (BDIGIT)(num / hbase);
-	    num %= hbase;
-	}
-	if (trim && ds[i-1] == 0) i--;
-	k = SIZEOF_BDIGITS;
-	while (k--) {
-	    ptr[--j] = ruby_digitmap[num % base];
-	    num /= base;
-	    if (j <= 0) break;
-	    if (trim && i == 0 && num == 0) break;
-	}
-    }
-    if (trim) {
-	while (j < len && ptr[j] == '0') j++;
-	MEMMOVE(ptr, ptr + j, char, len - j);
-	len -= j;
+    xds = BDIGITS(x);
+    xn = BIGNUM_LEN(x);
+    BARY_TRUNC(xds, xn);
+
+    if (xn == 0) {
+	return rb_usascii_str_new2("0");
     }
-    return len;
-}
 
-static long
-big2str_karatsuba(VALUE x, int base, char* ptr,
-		  long n1, long len, long hbase, int trim)
-{
-    long lh, ll, m1;
-    VALUE b, q, r;
+    if (!valid_radix_p(base))
+	invalid_radix(base);
 
-    if (BIGZEROP(x)) {
-	if (trim) return 0;
-	else {
-	    memset(ptr, '0', len);
-	    return len;
-	}
+    if (xn >= LONG_MAX/BITSPERDIG) {
+        rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
+    }
+
+    power_level = 0;
+    power = power_cache_get_power(base, power_level, NULL);
+    while (power_level < MAX_BASE36_POWER_TABLE_ENTRIES &&
+           (size_t)BIGNUM_LEN(power) <= (xn+1)/2) {
+        power_level++;
+        power = power_cache_get_power(base, power_level, NULL);
     }
+    assert(power_level != MAX_BASE36_POWER_TABLE_ENTRIES);
 
-    if (n1 <= KARATSUBA_DIGITS) {
-	return big2str_orig(x, base, ptr, len, hbase, trim);
+    if ((size_t)BIGNUM_LEN(power) <= xn) {
+        /*
+         * This increment guarantees x < power_cache_get_power(base, power_level)
+         * without invoking it actually.
+         * (power_cache_get_power(base, power_level) can be slow and not used
+         * in big2str_karatsuba.)
+         *
+         * Although it is possible that x < power_cache_get_power(base, power_level-1),
+         * it is no problem because big2str_karatsuba checks it and
+         * doesn't affect the result when b2s_data.ptr is NULL.
+         */
+        power_level++;
     }
 
-    b = power_cache_get_power(base, n1, &m1);
-    bigdivmod(x, b, &q, &r);
-    lh = big2str_karatsuba(q, base, ptr, (len - m1)/2,
-			   len - m1, hbase, trim);
-    rb_big_resize(q, 0);
-    ll = big2str_karatsuba(r, base, ptr + lh, m1/2,
-			   m1, hbase, !lh && trim);
-    rb_big_resize(r, 0);
+    b2s_data.negative = BIGNUM_NEGATIVE_P(x);
+    b2s_data.base = base;
+    b2s_data.hbase2 = maxpow_in_bdigit_dbl(base, &b2s_data.hbase2_numdigits);
+
+    b2s_data.result = Qnil;
+    b2s_data.ptr = NULL;
 
-    return lh + ll;
+    if (power_level == 0) {
+	big2str_2bdigits(&b2s_data, xds, xn, 0);
+    }
+    else {
+        VALUE tmpw = 0;
+        BDIGIT *wds;
+        size_t wn;
+        wn = power_level * BIGDIVREM_EXTRA_WORDS + BIGNUM_LEN(power);
+        wds = ALLOCV_N(BDIGIT, tmpw, xn + wn);
+        MEMCPY(wds, xds, BDIGIT, xn);
+	big2str_karatsuba(&b2s_data, wds, xn, wn, power_level, 0);
+        if (tmpw)
+            ALLOCV_END(tmpw);
+    }
+    RB_GC_GUARD(x);
+
+    *b2s_data.ptr = '\0';
+    rb_str_resize(b2s_data.result, (long)(b2s_data.ptr - RSTRING_PTR(b2s_data.result)));
+
+    RB_GC_GUARD(x);
+    return b2s_data.result;
 }
 
 VALUE
-rb_big2str0(VALUE x, int base, int trim)
+rb_big2str_generic(VALUE x, int base)
 {
-    int off;
-    VALUE ss, xx;
-    long n1, n2, len, hbase;
-    char* ptr;
+    return big2str_generic(x, base);
+}
 
-    if (FIXNUM_P(x)) {
-	return rb_fix2str(x, base);
-    }
-    if (BIGZEROP(x)) {
-	return rb_usascii_str_new2("0");
-    }
+#ifdef USE_GMP
+static VALUE
+big2str_gmp(VALUE x, int base)
+{
+    mpz_t mx;
+    size_t size;
+    VALUE str;
+    BDIGIT *xds = BDIGITS(x);
+    size_t xn = BIGNUM_LEN(x);
 
-    if (base < 2 || 36 < base)
-	rb_raise(rb_eArgError, "invalid radix %d", base);
+    mpz_init(mx);
+    bdigits_to_mpz(mx, xds, xn);
 
-    n2 = big2str_find_n1(x, base);
-    n1 = (n2 + 1) / 2;
-    ss = rb_usascii_str_new(0, n2 + 1); /* plus one for sign */
-    ptr = RSTRING_PTR(ss);
-    ptr[0] = RBIGNUM_SIGN(x) ? '+' : '-';
+    size = mpz_sizeinbase(mx, base);
 
-    hbase = base*base;
-#if SIZEOF_BDIGITS > 2
-    hbase *= hbase;
-#endif
-    off = !(trim && RBIGNUM_SIGN(x)); /* erase plus sign if trim */
-    xx = rb_big_clone(x);
-    RBIGNUM_SET_SIGN(xx, 1);
-    if (n1 <= KARATSUBA_DIGITS) {
-	len = off + big2str_orig(xx, base, ptr + off, n2, hbase, trim);
+    if (BIGNUM_NEGATIVE_P(x)) {
+        mpz_neg(mx, mx);
+        str = rb_usascii_str_new(0, size+1);
     }
     else {
-	len = off + big2str_karatsuba(xx, base, ptr + off, n1,
-				      n2, hbase, trim);
+        str = rb_usascii_str_new(0, size);
     }
-    rb_big_resize(xx, 0);
+    mpz_get_str(RSTRING_PTR(str), base, mx);
+    mpz_clear(mx);
 
-    ptr[len] = '\0';
-    rb_str_resize(ss, len);
+    if (RSTRING_PTR(str)[RSTRING_LEN(str)-1] == '\0') {
+        rb_str_set_len(str, RSTRING_LEN(str)-1);
+    }
 
-    return ss;
+    RB_GC_GUARD(x);
+    return str;
 }
 
 VALUE
-rb_big2str(VALUE x, int base)
+rb_big2str_gmp(VALUE x, int base)
 {
-    return rb_big2str0(x, base, 1);
+    return big2str_gmp(x, base);
 }
-
-/*
- *  call-seq:
- *     big.to_s(base=10)   =>  string
- *
- *  Returns a string containing the representation of <i>big</i> radix
- *  <i>base</i> (2 through 36).
- *
- *     12345654321.to_s         #=> "12345654321"
- *     12345654321.to_s(2)      #=> "1011011111110110111011110000110001"
- *     12345654321.to_s(8)      #=> "133766736061"
- *     12345654321.to_s(16)     #=> "2dfdbbc31"
- *     78546939656932.to_s(36)  #=> "rubyrules"
- */
+#endif
 
 static VALUE
-rb_big_to_s(int argc, VALUE *argv, VALUE x)
+rb_big2str1(VALUE x, int base)
 {
-    int base;
+    BDIGIT *xds;
+    size_t xn;
 
-    if (argc == 0) base = 10;
-    else {
-	VALUE b;
+    if (FIXNUM_P(x)) {
+	return rb_fix2str(x, base);
+    }
 
-	rb_scan_args(argc, argv, "01", &b);
-	base = NUM2INT(b);
+    bigtrunc(x);
+    xds = BDIGITS(x);
+    xn = BIGNUM_LEN(x);
+    BARY_TRUNC(xds, xn);
+
+    if (xn == 0) {
+	return rb_usascii_str_new2("0");
     }
-    return rb_big2str(x, base);
-}
 
-static VALUE
-big2ulong(VALUE x, const char *type, int check)
-{
-    long len = RBIGNUM_LEN(x);
-    BDIGIT_DBL num;
-    BDIGIT *ds;
+    if (!valid_radix_p(base))
+	invalid_radix(base);
 
-    if (len > DIGSPERLONG) {
-	if (check)
-	    rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
-	len = DIGSPERLONG;
+    if (xn >= LONG_MAX/BITSPERDIG) {
+        rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
     }
-    ds = BDIGITS(x);
-    num = 0;
-    while (len--) {
-	num = BIGUP(num);
-	num += ds[len];
+
+    if (POW2_P(base)) {
+        /* base == 2 || base == 4 || base == 8 || base == 16 || base == 32 */
+        return big2str_base_poweroftwo(x, base);
     }
-    return num;
+
+#ifdef USE_GMP
+    if (GMP_BIG2STR_DIGITS < xn) {
+        return big2str_gmp(x, base);
+    }
+#endif
+
+    return big2str_generic(x, base);
 }
 
 VALUE
-rb_big2ulong_pack(VALUE x)
+rb_big2str(VALUE x, int base)
+{
+    return rb_big2str1(x, base);
+}
+
+static unsigned long
+big2ulong(VALUE x, const char *type)
 {
-    VALUE num = big2ulong(x, "unsigned long", Qfalse);
-    if (!RBIGNUM_SIGN(x)) {
-	return -num;
+#if SIZEOF_LONG > SIZEOF_BDIGIT
+    size_t i;
+#endif
+    size_t len = BIGNUM_LEN(x);
+    unsigned long num;
+    BDIGIT *ds;
+
+    if (len == 0)
+        return 0;
+    if (BIGSIZE(x) > sizeof(long)) {
+        rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
     }
+    ds = BDIGITS(x);
+#if SIZEOF_LONG <= SIZEOF_BDIGIT
+    num = (unsigned long)ds[0];
+#else
+    num = 0;
+    for (i = 0; i < len; i++) {
+	num <<= BITSPERDIG;
+        num += (unsigned long)ds[len - i - 1]; /* overflow is already checked */
+    }
+#endif
     return num;
 }
 
-VALUE
+unsigned long
 rb_big2ulong(VALUE x)
 {
-    VALUE num = big2ulong(x, "unsigned long", Qtrue);
+    unsigned long num = big2ulong(x, "unsigned long");
 
-    if (!RBIGNUM_SIGN(x)) {
-	if ((SIGNED_VALUE)num < 0) {
-	    rb_raise(rb_eRangeError, "bignum out of range of unsigned long");
-	}
-	return -num;
+    if (BIGNUM_POSITIVE_P(x)) {
+        return num;
     }
-    return num;
+    else {
+        if (num <= 1+(unsigned long)(-(LONG_MIN+1)))
+            return -(long)(num-1)-1;
+    }
+    rb_raise(rb_eRangeError, "bignum out of range of unsigned long");
 }
 
-SIGNED_VALUE
+long
 rb_big2long(VALUE x)
 {
-    VALUE num = big2ulong(x, "long", Qtrue);
+    unsigned long num = big2ulong(x, "long");
 
-    if ((SIGNED_VALUE)num < 0 &&
-	(RBIGNUM_SIGN(x) || (SIGNED_VALUE)num != LONG_MIN)) {
-	rb_raise(rb_eRangeError, "bignum too big to convert into `long'");
+    if (BIGNUM_POSITIVE_P(x)) {
+        if (num <= LONG_MAX)
+            return num;
     }
-    if (!RBIGNUM_SIGN(x)) return -(SIGNED_VALUE)num;
-    return num;
+    else {
+        if (num <= 1+(unsigned long)(-(LONG_MIN+1)))
+            return -(long)(num-1)-1;
+    }
+    rb_raise(rb_eRangeError, "bignum too big to convert into `long'");
 }
 
 #if HAVE_LONG_LONG
@@ -1066,18 +5156,26 @@ rb_big2long(VALUE x)
 static unsigned LONG_LONG
 big2ull(VALUE x, const char *type)
 {
-    long len = RBIGNUM_LEN(x);
-    BDIGIT_DBL num;
-    BDIGIT *ds;
+#if SIZEOF_LONG_LONG > SIZEOF_BDIGIT
+    size_t i;
+#endif
+    size_t len = BIGNUM_LEN(x);
+    unsigned LONG_LONG num;
+    BDIGIT *ds = BDIGITS(x);
 
-    if (len > SIZEOF_LONG_LONG/SIZEOF_BDIGITS)
+    if (len == 0)
+        return 0;
+    if (BIGSIZE(x) > SIZEOF_LONG_LONG)
 	rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
-    ds = BDIGITS(x);
+#if SIZEOF_LONG_LONG <= SIZEOF_BDIGIT
+    num = (unsigned LONG_LONG)ds[0];
+#else
     num = 0;
-    while (len--) {
+    for (i = 0; i < len; i++) {
 	num = BIGUP(num);
-	num += ds[len];
+        num += ds[len - i - 1];
     }
+#endif
     return num;
 }
 
@@ -1086,8 +5184,14 @@ rb_big2ull(VALUE x)
 {
     unsigned LONG_LONG num = big2ull(x, "unsigned long long");
 
-    if (!RBIGNUM_SIGN(x)) return -num;
-    return num;
+    if (BIGNUM_POSITIVE_P(x)) {
+        return num;
+    }
+    else {
+        if (num <= 1+(unsigned LONG_LONG)(-(LLONG_MIN+1)))
+            return -(LONG_LONG)(num-1)-1;
+    }
+    rb_raise(rb_eRangeError, "bignum out of range of unsigned long long");
 }
 
 LONG_LONG
@@ -1095,12 +5199,15 @@ rb_big2ll(VALUE x)
 {
     unsigned LONG_LONG num = big2ull(x, "long long");
 
-    if ((LONG_LONG)num < 0 && (RBIGNUM_SIGN(x)
-			       || (LONG_LONG)num != LLONG_MIN)) {
-	rb_raise(rb_eRangeError, "bignum too big to convert into `long long'");
+    if (BIGNUM_POSITIVE_P(x)) {
+        if (num <= LLONG_MAX)
+            return num;
     }
-    if (!RBIGNUM_SIGN(x)) return -(LONG_LONG)num;
-    return num;
+    else {
+        if (num <= 1+(unsigned LONG_LONG)(-(LLONG_MIN+1)))
+            return -(LONG_LONG)(num-1)-1;
+    }
+    rb_raise(rb_eRangeError, "bignum too big to convert into `long long'");
 }
 
 #endif  /* HAVE_LONG_LONG */
@@ -1121,7 +5228,7 @@ dbl2big(double d)
 	rb_raise(rb_eFloatDomainError, "NaN");
     }
 
-    while (!POSFIXABLE(u) || 0 != (long)u) {
+    while (1.0 <= u) {
 	u /= (double)(BIGRAD);
 	i++;
     }
@@ -1143,32 +5250,11 @@ rb_dbl2big(double d)
     return bignorm(dbl2big(d));
 }
 
-static int
-nlz(BDIGIT x)
-{
-    BDIGIT y;
-    int n = BITSPERDIG;
-#if BITSPERDIG > 64
-    y = x >> 64; if (y) {n -= 64; x = y;}
-#endif
-#if BITSPERDIG > 32
-    y = x >> 32; if (y) {n -= 32; x = y;}
-#endif
-#if BITSPERDIG > 16
-    y = x >> 16; if (y) {n -= 16; x = y;}
-#endif
-    y = x >>  8; if (y) {n -=  8; x = y;}
-    y = x >>  4; if (y) {n -=  4; x = y;}
-    y = x >>  2; if (y) {n -=  2; x = y;}
-    y = x >>  1; if (y) {return n - 2;}
-    return n - x;
-}
-
 static double
 big2dbl(VALUE x)
 {
     double d = 0.0;
-    long i = RBIGNUM_LEN(x), lo = 0, bits;
+    long i = (bigtrunc(x), BIGNUM_LEN(x)), lo = 0, bits;
     BDIGIT *ds = BDIGITS(x), dl;
 
     if (i) {
@@ -1185,24 +5271,37 @@ big2dbl(VALUE x)
 		d = ds[i] + BIGRAD*d;
 	    }
 	    dl = ds[i];
-	    if (bits && (dl & (1UL << (bits %= BITSPERDIG)))) {
-		int carry = dl & ~(~0UL << bits);
+	    if (bits && (dl & ((BDIGIT)1 << (bits %= BITSPERDIG)))) {
+		int carry = (dl & ~(BDIGMAX << bits)) != 0;
 		if (!carry) {
 		    while (i-- > 0) {
-			if ((carry = ds[i]) != 0) break;
+			carry = ds[i] != 0;
+			if (carry) break;
 		    }
 		}
 		if (carry) {
-		    dl &= ~0UL << bits;
-		    dl += 1UL << bits;
+                    BDIGIT mask = BDIGMAX;
+                    BDIGIT bit = 1;
+                    mask <<= bits;
+                    bit <<= bits;
+                    dl &= mask;
+                    dl += bit;
+                    dl = BIGLO(dl);
 		    if (!dl) d += 1;
 		}
 	    }
 	    d = dl + BIGRAD*d;
-	    if (lo) d = ldexp(d, lo * BITSPERDIG);
+	    if (lo) {
+		if (lo > INT_MAX / BITSPERDIG)
+		    d = HUGE_VAL;
+		else if (lo < INT_MIN / BITSPERDIG)
+		    d = 0.0;
+		else
+		    d = ldexp(d, (int)(lo * BITSPERDIG));
+	    }
 	}
     }
-    if (!RBIGNUM_SIGN(x)) d = -d;
+    if (BIGNUM_NEGATIVE_P(x)) d = -d;
     return d;
 }
 
@@ -1213,77 +5312,207 @@ rb_big2dbl(VALUE x)
 
     if (isinf(d)) {
 	rb_warning("Bignum out of Float range");
-	d = HUGE_VAL;
+	if (d < 0.0)
+	    d = -HUGE_VAL;
+	else
+	    d = HUGE_VAL;
     }
     return d;
 }
 
-/*
- *  call-seq:
- *     big.to_f -> float
- *
- *  Converts <i>big</i> to a <code>Float</code>. If <i>big</i> doesn't
- *  fit in a <code>Float</code>, the result is infinity.
- *
- */
+VALUE
+rb_integer_float_cmp(VALUE x, VALUE y)
+{
+    double yd = RFLOAT_VALUE(y);
+    double yi, yf;
+    VALUE rel;
 
-static VALUE
-rb_big_to_f(VALUE x)
+    if (isnan(yd))
+        return Qnil;
+    if (isinf(yd)) {
+        if (yd > 0.0) return INT2FIX(-1);
+        else return INT2FIX(1);
+    }
+    yf = modf(yd, &yi);
+    if (FIXNUM_P(x)) {
+#if SIZEOF_LONG * CHAR_BIT < DBL_MANT_DIG /* assume FLT_RADIX == 2 */
+        double xd = (double)FIX2LONG(x);
+        if (xd < yd)
+            return INT2FIX(-1);
+        if (xd > yd)
+            return INT2FIX(1);
+        return INT2FIX(0);
+#else
+        long xn, yn;
+        if (yi < FIXNUM_MIN)
+            return INT2FIX(1);
+        if (FIXNUM_MAX+1 <= yi)
+            return INT2FIX(-1);
+        xn = FIX2LONG(x);
+        yn = (long)yi;
+        if (xn < yn)
+            return INT2FIX(-1);
+        if (xn > yn)
+            return INT2FIX(1);
+        if (yf < 0.0)
+            return INT2FIX(1);
+        if (0.0 < yf)
+            return INT2FIX(-1);
+        return INT2FIX(0);
+#endif
+    }
+    y = rb_dbl2big(yi);
+    rel = rb_big_cmp(x, y);
+    if (yf == 0.0 || rel != INT2FIX(0))
+        return rel;
+    if (yf < 0.0)
+        return INT2FIX(1);
+    return INT2FIX(-1);
+}
+
+#if SIZEOF_LONG * CHAR_BIT >= DBL_MANT_DIG /* assume FLT_RADIX == 2 */
+COMPILER_WARNING_PUSH
+#if __has_warning("-Wimplicit-int-float-conversion")
+COMPILER_WARNING_IGNORED(-Wimplicit-int-float-conversion)
+#endif
+static const double LONG_MAX_as_double = LONG_MAX;
+COMPILER_WARNING_POP
+#endif
+
+VALUE
+rb_integer_float_eq(VALUE x, VALUE y)
 {
-    return DBL2NUM(rb_big2dbl(x));
+    double yd = RFLOAT_VALUE(y);
+    double yi, yf;
+
+    if (isnan(yd) || isinf(yd))
+        return Qfalse;
+    yf = modf(yd, &yi);
+    if (yf != 0)
+        return Qfalse;
+    if (FIXNUM_P(x)) {
+#if SIZEOF_LONG * CHAR_BIT < DBL_MANT_DIG /* assume FLT_RADIX == 2 */
+        double xd = (double)FIX2LONG(x);
+        if (xd != yd)
+            return Qfalse;
+        return Qtrue;
+#else
+        long xn, yn;
+        if (yi < LONG_MIN || LONG_MAX_as_double <= yi)
+            return Qfalse;
+        xn = FIX2LONG(x);
+        yn = (long)yi;
+        if (xn != yn)
+            return Qfalse;
+        return Qtrue;
+#endif
+    }
+    y = rb_dbl2big(yi);
+    return rb_big_eq(x, y);
 }
 
-/*
- *  call-seq:
- *     big <=> numeric   => -1, 0, +1
- *
- *  Comparison---Returns -1, 0, or +1 depending on whether <i>big</i> is
- *  less than, equal to, or greater than <i>numeric</i>. This is the
- *  basis for the tests in <code>Comparable</code>.
- *
- */
 
 VALUE
 rb_big_cmp(VALUE x, VALUE y)
 {
-    long xlen = RBIGNUM_LEN(x);
+    if (FIXNUM_P(y)) {
+	x = bigfixize(x);
+        if (FIXNUM_P(x)) {
+	    /* SIGNED_VALUE and Fixnum have same sign-bits, same
+	     * order */
+	    SIGNED_VALUE sx = (SIGNED_VALUE)x, sy = (SIGNED_VALUE)y;
+	    if (sx < sy) return INT2FIX(-1);
+	    return INT2FIX(sx > sy);
+        }
+    }
+    else if (RB_BIGNUM_TYPE_P(y)) {
+	if (BIGNUM_SIGN(x) == BIGNUM_SIGN(y)) {
+	    int cmp = bary_cmp(BDIGITS(x), BIGNUM_LEN(x), BDIGITS(y), BIGNUM_LEN(y));
+	    return INT2FIX(BIGNUM_SIGN(x) ? cmp : -cmp);
+	}
+    }
+    else if (RB_FLOAT_TYPE_P(y)) {
+        return rb_integer_float_cmp(x, y);
+    }
+    else {
+	return rb_num_coerce_cmp(x, y, idCmp);
+    }
+    return INT2FIX(BIGNUM_SIGN(x) ? 1 : -1);
+}
 
-    switch (TYPE(y)) {
-      case T_FIXNUM:
-	y = rb_int2big(FIX2LONG(y));
-	break;
+enum big_op_t {
+    big_op_gt,
+    big_op_ge,
+    big_op_lt,
+    big_op_le
+};
+
+static VALUE
+big_op(VALUE x, VALUE y, enum big_op_t op)
+{
+    VALUE rel;
+    int n;
 
-      case T_BIGNUM:
-	break;
+    if (RB_INTEGER_TYPE_P(y)) {
+	rel = rb_big_cmp(x, y);
+    }
+    else if (RB_FLOAT_TYPE_P(y)) {
+        rel = rb_integer_float_cmp(x, y);
+    }
+    else {
+	ID id = 0;
+	switch (op) {
+	  case big_op_gt: id = '>'; break;
+	  case big_op_ge: id = idGE; break;
+	  case big_op_lt: id = '<'; break;
+	  case big_op_le: id = idLE; break;
+	}
+	return rb_num_coerce_relop(x, y, id);
+    }
 
-      case T_FLOAT:
-	return rb_dbl_cmp(rb_big2dbl(x), RFLOAT_VALUE(y));
+    if (NIL_P(rel)) return Qfalse;
+    n = FIX2INT(rel);
 
-      default:
-	return rb_num_coerce_cmp(x, y, rb_intern("<=>"));
+    switch (op) {
+	case big_op_gt: return n >  0 ? Qtrue : Qfalse;
+	case big_op_ge: return n >= 0 ? Qtrue : Qfalse;
+	case big_op_lt: return n <  0 ? Qtrue : Qfalse;
+	case big_op_le: return n <= 0 ? Qtrue : Qfalse;
     }
+    return Qundef;
+}
 
-    if (RBIGNUM_SIGN(x) > RBIGNUM_SIGN(y)) return INT2FIX(1);
-    if (RBIGNUM_SIGN(x) < RBIGNUM_SIGN(y)) return INT2FIX(-1);
-    if (xlen < RBIGNUM_LEN(y))
-	return (RBIGNUM_SIGN(x)) ? INT2FIX(-1) : INT2FIX(1);
-    if (xlen > RBIGNUM_LEN(y))
-	return (RBIGNUM_SIGN(x)) ? INT2FIX(1) : INT2FIX(-1);
+VALUE
+rb_big_gt(VALUE x, VALUE y)
+{
+    return big_op(x, y, big_op_gt);
+}
 
-    while(xlen-- && (BDIGITS(x)[xlen]==BDIGITS(y)[xlen]));
-    if (-1 == xlen) return INT2FIX(0);
-    return (BDIGITS(x)[xlen] > BDIGITS(y)[xlen]) ?
-	(RBIGNUM_SIGN(x) ? INT2FIX(1) : INT2FIX(-1)) :
-	    (RBIGNUM_SIGN(x) ? INT2FIX(-1) : INT2FIX(1));
+VALUE
+rb_big_ge(VALUE x, VALUE y)
+{
+    return big_op(x, y, big_op_ge);
+}
+
+VALUE
+rb_big_lt(VALUE x, VALUE y)
+{
+    return big_op(x, y, big_op_lt);
+}
+
+VALUE
+rb_big_le(VALUE x, VALUE y)
+{
+    return big_op(x, y, big_op_le);
 }
 
 /*
  *  call-seq:
- *     big == obj  => true or false
+ *     big == obj  -> true or false
  *
  *  Returns <code>true</code> only if <i>obj</i> has the same value
- *  as <i>big</i>. Contrast this with <code>Bignum#eql?</code>, which
- *  requires <i>obj</i> to be a <code>Bignum</code>.
+ *  as <i>big</i>. Contrast this with Integer#eql?, which requires
+ *  <i>obj</i> to be an Integer.
  *
  *     68719476736 == 68719476736.0   #=> true
  */
@@ -1291,96 +5520,65 @@ rb_big_cmp(VALUE x, VALUE y)
 VALUE
 rb_big_eq(VALUE x, VALUE y)
 {
-    switch (TYPE(y)) {
-      case T_FIXNUM:
-	y = rb_int2big(FIX2LONG(y));
-	break;
-      case T_BIGNUM:
-	break;
-      case T_FLOAT:
-	{
-	    volatile double a, b;
-
-	    a = RFLOAT_VALUE(y);
-	    if (isnan(a)) return Qfalse;
-	    b = rb_big2dbl(x);
-	    return (a == b)?Qtrue:Qfalse;
-	}
-      default:
+    if (FIXNUM_P(y)) {
+	return bignorm(x) == y ? Qtrue : Qfalse;
+    }
+    else if (RB_BIGNUM_TYPE_P(y)) {
+    }
+    else if (RB_FLOAT_TYPE_P(y)) {
+        return rb_integer_float_eq(x, y);
+    }
+    else {
 	return rb_equal(y, x);
     }
-    if (RBIGNUM_SIGN(x) != RBIGNUM_SIGN(y)) return Qfalse;
-    if (RBIGNUM_LEN(x) != RBIGNUM_LEN(y)) return Qfalse;
-    if (MEMCMP(BDIGITS(x),BDIGITS(y),BDIGIT,RBIGNUM_LEN(y)) != 0) return Qfalse;
+    if (BIGNUM_SIGN(x) != BIGNUM_SIGN(y)) return Qfalse;
+    if (BIGNUM_LEN(x) != BIGNUM_LEN(y)) return Qfalse;
+    if (MEMCMP(BDIGITS(x),BDIGITS(y),BDIGIT,BIGNUM_LEN(y)) != 0) return Qfalse;
     return Qtrue;
 }
 
-/*
- *  call-seq:
- *     big.eql?(obj)   => true or false
- *
- *  Returns <code>true</code> only if <i>obj</i> is a
- *  <code>Bignum</code> with the same value as <i>big</i>. Contrast this
- *  with <code>Bignum#==</code>, which performs type conversions.
- *
- *     68719476736.eql?(68719476736.0)   #=> false
- */
-
-static VALUE
+VALUE
 rb_big_eql(VALUE x, VALUE y)
 {
-    if (TYPE(y) != T_BIGNUM) return Qfalse;
-    if (RBIGNUM_SIGN(x) != RBIGNUM_SIGN(y)) return Qfalse;
-    if (RBIGNUM_LEN(x) != RBIGNUM_LEN(y)) return Qfalse;
-    if (MEMCMP(BDIGITS(x),BDIGITS(y),BDIGIT,RBIGNUM_LEN(y)) != 0) return Qfalse;
+    if (!RB_BIGNUM_TYPE_P(y)) return Qfalse;
+    if (BIGNUM_SIGN(x) != BIGNUM_SIGN(y)) return Qfalse;
+    if (BIGNUM_LEN(x) != BIGNUM_LEN(y)) return Qfalse;
+    if (MEMCMP(BDIGITS(x),BDIGITS(y),BDIGIT,BIGNUM_LEN(y)) != 0) return Qfalse;
     return Qtrue;
 }
 
-/*
- * call-seq:
- *    -big   =>  other_big
- *
- * Unary minus (returns a new Bignum whose value is 0-big)
- */
-
-static VALUE
+VALUE
 rb_big_uminus(VALUE x)
 {
     VALUE z = rb_big_clone(x);
 
-    RBIGNUM_SET_SIGN(z, !RBIGNUM_SIGN(x));
+    BIGNUM_NEGATE(z);
 
     return bignorm(z);
 }
 
-/*
- * call-seq:
- *     ~big  =>  integer
- *
- * Inverts the bits in big. As Bignums are conceptually infinite
- * length, the result acts as if it had an infinite number of one
- * bits to the left. In hex representations, this is displayed
- * as two periods to the left of the digits.
- *
- *   sprintf("%X", ~0x1122334455)    #=> "..FEEDDCCBBAA"
- */
-
-static VALUE
-rb_big_neg(VALUE x)
+VALUE
+rb_big_comp(VALUE x)
 {
     VALUE z = rb_big_clone(x);
-    BDIGIT *ds;
-    long i;
+    BDIGIT *ds = BDIGITS(z);
+    long n = BIGNUM_LEN(z);
 
-    if (!RBIGNUM_SIGN(x)) get2comp(z);
-    ds = BDIGITS(z);
-    i = RBIGNUM_LEN(x);
-    if (!i) return INT2FIX(~(SIGNED_VALUE)0);
-    while (i--) {
-	ds[i] = ~ds[i];
+    if (!n) return INT2FIX(-1);
+
+    if (BIGNUM_POSITIVE_P(z)) {
+        if (bary_add_one(ds, n)) {
+            big_extend_carry(z);
+        }
+        BIGNUM_SET_NEGATIVE_SIGN(z);
+    }
+    else {
+        bary_neg(ds, n);
+        if (bary_add_one(ds, n))
+            return INT2FIX(-1);
+        bary_neg(ds, n);
+        BIGNUM_SET_POSITIVE_SIGN(z);
     }
-    RBIGNUM_SET_SIGN(z, !RBIGNUM_SIGN(z));
-    if (RBIGNUM_SIGN(x)) get2comp(z);
 
     return bignorm(z);
 }
@@ -1388,405 +5586,464 @@ rb_big_neg(VALUE x)
 static VALUE
 bigsub(VALUE x, VALUE y)
 {
-    VALUE z = 0;
-    BDIGIT *zds;
+    VALUE z;
+    BDIGIT *xds, *yds, *zds;
+    long xn, yn, zn;
+
+    xn = BIGNUM_LEN(x);
+    yn = BIGNUM_LEN(y);
+    zn = xn < yn ? yn : xn;
+
+    z = bignew(zn, 1);
+
+    xds = BDIGITS(x);
+    yds = BDIGITS(y);
+    zds = BDIGITS(z);
+
+    if (bary_sub(zds, zn, xds, xn, yds, yn)) {
+        bary_2comp(zds, zn);
+        BIGNUM_SET_NEGATIVE_SIGN(z);
+    }
+
+    return z;
+}
+
+static VALUE bigadd_int(VALUE x, long y);
+
+static VALUE
+bigsub_int(VALUE x, long y0)
+{
+    VALUE z;
+    BDIGIT *xds, *zds;
+    long xn, zn;
     BDIGIT_DBL_SIGNED num;
-    long i = RBIGNUM_LEN(x);
+    long i, y;
+
+    y = y0;
+    xds = BDIGITS(x);
+    xn = BIGNUM_LEN(x);
 
-    /* if x is larger than y, swap */
-    if (RBIGNUM_LEN(x) < RBIGNUM_LEN(y)) {
-	z = x; x = y; y = z;	/* swap x y */
+    if (xn == 0)
+        return LONG2NUM(-y0);
+
+    zn = xn;
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    if (zn < bdigit_roomof(SIZEOF_LONG))
+        zn = bdigit_roomof(SIZEOF_LONG);
+#endif
+    z = bignew(zn, BIGNUM_SIGN(x));
+    zds = BDIGITS(z);
+
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+    assert(xn == zn);
+    num = (BDIGIT_DBL_SIGNED)xds[0] - y;
+    if (xn == 1 && num < 0) {
+	BIGNUM_NEGATE(z);
+	zds[0] = (BDIGIT)-num;
+	RB_GC_GUARD(x);
+	return bignorm(z);
+    }
+    zds[0] = BIGLO(num);
+    num = BIGDN(num);
+    i = 1;
+    if (i < xn)
+        goto y_is_zero_x;
+    goto finish;
+#else
+    num = 0;
+    for (i=0; i < xn; i++) {
+        if (y == 0) goto y_is_zero_x;
+	num += (BDIGIT_DBL_SIGNED)xds[i] - BIGLO(y);
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
+	y = BIGDN(y);
     }
-    else if (RBIGNUM_LEN(x) == RBIGNUM_LEN(y)) {
-	while (i > 0) {
-	    i--;
-	    if (BDIGITS(x)[i] > BDIGITS(y)[i]) {
-		break;
-	    }
-	    if (BDIGITS(x)[i] < BDIGITS(y)[i]) {
-		z = x; x = y; y = z;	/* swap x y */
-		break;
-	    }
-	}
+    for (; i < zn; i++) {
+        if (y == 0) goto y_is_zero_z;
+        num -= BIGLO(y);
+        zds[i] = BIGLO(num);
+        num = BIGDN(num);
+        y = BIGDN(y);
     }
+    goto finish;
+#endif
 
-    z = bignew(RBIGNUM_LEN(x), z==0);
+    for (; i < xn; i++) {
+      y_is_zero_x:
+        if (num == 0) goto num_is_zero_x;
+	num += xds[i];
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
+    }
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    for (; i < zn; i++) {
+      y_is_zero_z:
+        if (num == 0) goto num_is_zero_z;
+        zds[i] = BIGLO(num);
+        num = BIGDN(num);
+    }
+#endif
+    goto finish;
+
+    for (; i < xn; i++) {
+      num_is_zero_x:
+	zds[i] = xds[i];
+    }
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    for (; i < zn; i++) {
+      num_is_zero_z:
+        zds[i] = 0;
+    }
+#endif
+    goto finish;
+
+  finish:
+    assert(num == 0 || num == -1);
+    if (num < 0) {
+        get2comp(z);
+	BIGNUM_NEGATE(z);
+    }
+    RB_GC_GUARD(x);
+    return bignorm(z);
+}
+
+static VALUE
+bigadd_int(VALUE x, long y)
+{
+    VALUE z;
+    BDIGIT *xds, *zds;
+    long xn, zn;
+    BDIGIT_DBL num;
+    long i;
+
+    xds = BDIGITS(x);
+    xn = BIGNUM_LEN(x);
+
+    if (xn == 0)
+        return LONG2NUM(y);
+
+    zn = xn;
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    if (zn < bdigit_roomof(SIZEOF_LONG))
+        zn = bdigit_roomof(SIZEOF_LONG);
+#endif
+    zn++;
+
+    z = bignew(zn, BIGNUM_SIGN(x));
     zds = BDIGITS(z);
 
-    for (i = 0, num = 0; i < RBIGNUM_LEN(y); i++) {
-	num += (BDIGIT_DBL_SIGNED)BDIGITS(x)[i] - BDIGITS(y)[i];
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+    num = (BDIGIT_DBL)xds[0] + y;
+    zds[0] = BIGLO(num);
+    num = BIGDN(num);
+    i = 1;
+    if (i < xn)
+        goto y_is_zero_x;
+    goto y_is_zero_z;
+#else
+    num = 0;
+    for (i=0; i < xn; i++) {
+        if (y == 0) goto y_is_zero_x;
+	num += (BDIGIT_DBL)xds[i] + BIGLO(y);
 	zds[i] = BIGLO(num);
 	num = BIGDN(num);
+	y = BIGDN(y);
     }
-    while (num && i < RBIGNUM_LEN(x)) {
-	num += BDIGITS(x)[i];
-	zds[i++] = BIGLO(num);
+    for (; i < zn; i++) {
+        if (y == 0) goto y_is_zero_z;
+	num += BIGLO(y);
+	zds[i] = BIGLO(num);
 	num = BIGDN(num);
+	y = BIGDN(y);
     }
-    while (i < RBIGNUM_LEN(x)) {
-	zds[i] = BDIGITS(x)[i];
-	i++;
+    goto finish;
+
+#endif
+
+    for (;i < xn; i++) {
+      y_is_zero_x:
+        if (num == 0) goto num_is_zero_x;
+	num += (BDIGIT_DBL)xds[i];
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
     }
+    for (; i < zn; i++) {
+      y_is_zero_z:
+        if (num == 0) goto num_is_zero_z;
+	zds[i] = BIGLO(num);
+	num = BIGDN(num);
+    }
+    goto finish;
 
-    return z;
+    for (;i < xn; i++) {
+      num_is_zero_x:
+	zds[i] = xds[i];
+    }
+    for (; i < zn; i++) {
+      num_is_zero_z:
+	zds[i] = 0;
+    }
+    goto finish;
+
+  finish:
+    RB_GC_GUARD(x);
+    return bignorm(z);
 }
 
 static VALUE
 bigadd(VALUE x, VALUE y, int sign)
 {
     VALUE z;
-    BDIGIT_DBL num;
-    long i, len;
+    size_t len;
 
-    sign = (sign == RBIGNUM_SIGN(y));
-    if (RBIGNUM_SIGN(x) != sign) {
+    sign = (sign == BIGNUM_SIGN(y));
+    if (BIGNUM_SIGN(x) != sign) {
 	if (sign) return bigsub(y, x);
 	return bigsub(x, y);
     }
 
-    if (RBIGNUM_LEN(x) > RBIGNUM_LEN(y)) {
-	len = RBIGNUM_LEN(x) + 1;
-	z = x; x = y; y = z;
+    if (BIGNUM_LEN(x) > BIGNUM_LEN(y)) {
+	len = BIGNUM_LEN(x) + 1;
     }
     else {
-	len = RBIGNUM_LEN(y) + 1;
+	len = BIGNUM_LEN(y) + 1;
     }
     z = bignew(len, sign);
 
-    len = RBIGNUM_LEN(x);
-    for (i = 0, num = 0; i < len; i++) {
-	num += (BDIGIT_DBL)BDIGITS(x)[i] + BDIGITS(y)[i];
-	BDIGITS(z)[i] = BIGLO(num);
-	num = BIGDN(num);
-    }
-    len = RBIGNUM_LEN(y);
-    while (num && i < len) {
-	num += BDIGITS(y)[i];
-	BDIGITS(z)[i++] = BIGLO(num);
-	num = BIGDN(num);
-    }
-    while (i < len) {
-	BDIGITS(z)[i] = BDIGITS(y)[i];
-	i++;
-    }
-    BDIGITS(z)[i] = (BDIGIT)num;
+    bary_add(BDIGITS(z), BIGNUM_LEN(z),
+             BDIGITS(x), BIGNUM_LEN(x),
+             BDIGITS(y), BIGNUM_LEN(y));
 
     return z;
 }
 
-/*
- *  call-seq:
- *     big + other  => Numeric
- *
- *  Adds big and other, returning the result.
- */
-
 VALUE
 rb_big_plus(VALUE x, VALUE y)
 {
-    switch (TYPE(y)) {
-      case T_FIXNUM:
-	y = rb_int2big(FIX2LONG(y));
-	/* fall through */
-      case T_BIGNUM:
-	return bignorm(bigadd(x, y, 1));
+    long n;
 
-      case T_FLOAT:
+    if (FIXNUM_P(y)) {
+	n = FIX2LONG(y);
+	if ((n > 0) != BIGNUM_SIGN(x)) {
+	    if (n < 0) {
+		n = -n;
+	    }
+	    return bigsub_int(x, n);
+	}
+	if (n < 0) {
+	    n = -n;
+	}
+	return bigadd_int(x, n);
+    }
+    else if (RB_BIGNUM_TYPE_P(y)) {
+	return bignorm(bigadd(x, y, 1));
+    }
+    else if (RB_FLOAT_TYPE_P(y)) {
 	return DBL2NUM(rb_big2dbl(x) + RFLOAT_VALUE(y));
-
-      default:
+    }
+    else {
 	return rb_num_coerce_bin(x, y, '+');
     }
 }
 
-/*
- *  call-seq:
- *     big - other  => Numeric
- *
- *  Subtracts other from big, returning the result.
- */
-
 VALUE
 rb_big_minus(VALUE x, VALUE y)
 {
-    switch (TYPE(y)) {
-      case T_FIXNUM:
-	y = rb_int2big(FIX2LONG(y));
-	/* fall through */
-      case T_BIGNUM:
-	return bignorm(bigadd(x, y, 0));
+    long n;
 
-      case T_FLOAT:
+    if (FIXNUM_P(y)) {
+	n = FIX2LONG(y);
+	if ((n > 0) != BIGNUM_SIGN(x)) {
+	    if (n < 0) {
+		n = -n;
+	    }
+	    return bigadd_int(x, n);
+	}
+	if (n < 0) {
+	    n = -n;
+	}
+	return bigsub_int(x, n);
+    }
+    else if (RB_BIGNUM_TYPE_P(y)) {
+	return bignorm(bigadd(x, y, 0));
+    }
+    else if (RB_FLOAT_TYPE_P(y)) {
 	return DBL2NUM(rb_big2dbl(x) - RFLOAT_VALUE(y));
-
-      default:
+    }
+    else {
 	return rb_num_coerce_bin(x, y, '-');
     }
 }
 
-static void
-rb_big_stop(void *ptr)
+static VALUE
+bigsq(VALUE x)
 {
-    VALUE *stop = (VALUE*)ptr;
-    *stop = Qtrue;
-}
+    long xn, zn;
+    VALUE z;
+    BDIGIT *xds, *zds;
 
-struct big_mul_struct {
-    VALUE x, y, z, stop;
-};
+    xn = BIGNUM_LEN(x);
+    zn = 2 * xn;
 
-static VALUE
-bigmul1(void *ptr)
-{
-    struct big_mul_struct *bms = (struct big_mul_struct*)ptr;
-    long i, j;
-    BDIGIT_DBL n = 0;
-    VALUE x = bms->x, y = bms->y, z = bms->z;
-    BDIGIT *zds;
+    z = bignew(zn, 1);
 
-    j = RBIGNUM_LEN(x) + RBIGNUM_LEN(y) + 1;
+    xds = BDIGITS(x);
     zds = BDIGITS(z);
-    while (j--) zds[j] = 0;
-    for (i = 0; i < RBIGNUM_LEN(x); i++) {
-	BDIGIT_DBL dd;
-	if (bms->stop) return Qnil;
-	dd = BDIGITS(x)[i];
-	if (dd == 0) continue;
-	n = 0;
-	for (j = 0; j < RBIGNUM_LEN(y); j++) {
-	    BDIGIT_DBL ee = n + (BDIGIT_DBL)dd * BDIGITS(y)[j];
-	    n = zds[i + j] + ee;
-	    if (ee) zds[i + j] = BIGLO(n);
-	    n = BIGDN(n);
-	}
-	if (n) {
-	    zds[i + j] = n;
-	}
-    }
+
+    if (xn < NAIVE_MUL_DIGITS)
+        bary_sq_fast(zds, zn, xds, xn);
+    else
+        bary_mul(zds, zn, xds, xn, xds, xn);
+
+    RB_GC_GUARD(x);
     return z;
 }
 
 static VALUE
-rb_big_mul0(VALUE x, VALUE y)
+bigmul0(VALUE x, VALUE y)
 {
-    struct big_mul_struct bms;
-    volatile VALUE z;
+    long xn, yn, zn;
+    VALUE z;
+    BDIGIT *xds, *yds, *zds;
 
-    switch (TYPE(y)) {
-      case T_FIXNUM:
-	y = rb_int2big(FIX2LONG(y));
-	break;
+    if (x == y)
+        return bigsq(x);
 
-      case T_BIGNUM:
-	break;
+    xn = BIGNUM_LEN(x);
+    yn = BIGNUM_LEN(y);
+    zn = xn + yn;
 
-      case T_FLOAT:
-	return DBL2NUM(rb_big2dbl(x) * RFLOAT_VALUE(y));
+    z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
 
-      default:
-	return rb_num_coerce_bin(x, y, '*');
-    }
-
-    bms.x = x;
-    bms.y = y;
-    bms.z = bignew(RBIGNUM_LEN(x) + RBIGNUM_LEN(y) + 1, RBIGNUM_SIGN(x)==RBIGNUM_SIGN(y));
-    bms.stop = Qfalse;
+    xds = BDIGITS(x);
+    yds = BDIGITS(y);
+    zds = BDIGITS(z);
 
-    if (RBIGNUM_LEN(x) + RBIGNUM_LEN(y) > 10000) {
-	z = rb_thread_blocking_region(bigmul1, &bms, rb_big_stop, &bms.stop);
-    }
-    else {
-	z = bigmul1(&bms);
-    }
+    bary_mul(zds, zn, xds, xn, yds, yn);
 
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
     return z;
 }
 
-/*
- *  call-seq:
- *     big * other  => Numeric
- *
- *  Multiplies big and other, returning the result.
- */
-
 VALUE
 rb_big_mul(VALUE x, VALUE y)
 {
-    return bignorm(rb_big_mul0(x, y));
-}
-
-struct big_div_struct {
-    long nx, ny;
-    BDIGIT *yds, *zds;
-    VALUE stop;
-};
-
-static VALUE
-bigdivrem1(void *ptr)
-{
-    struct big_div_struct *bds = (struct big_div_struct*)ptr;
-    long nx = bds->nx, ny = bds->ny;
-    long i, j, nyzero;
-    BDIGIT *yds = bds->yds, *zds = bds->zds;
-    BDIGIT_DBL t2;
-    BDIGIT_DBL_SIGNED num;
-    BDIGIT q;
+    if (FIXNUM_P(y)) {
+	y = rb_int2big(FIX2LONG(y));
+    }
+    else if (RB_BIGNUM_TYPE_P(y)) {
+    }
+    else if (RB_FLOAT_TYPE_P(y)) {
+	return DBL2NUM(rb_big2dbl(x) * RFLOAT_VALUE(y));
+    }
+    else {
+	return rb_num_coerce_bin(x, y, '*');
+    }
 
-    j = nx==ny?nx+1:nx;
-    for (nyzero = 0; !yds[nyzero]; nyzero++);
-    do {
-	if (bds->stop) return Qnil;
-	if (zds[j] ==  yds[ny-1]) q = BIGRAD-1;
-	else q = (BDIGIT)((BIGUP(zds[j]) + zds[j-1])/yds[ny-1]);
-	if (q) {
-           i = nyzero; num = 0; t2 = 0;
-	    do {			/* multiply and subtract */
-		BDIGIT_DBL ee;
-		t2 += (BDIGIT_DBL)yds[i] * q;
-		ee = num - BIGLO(t2);
-		num = (BDIGIT_DBL)zds[j - ny + i] + ee;
-		if (ee) zds[j - ny + i] = BIGLO(num);
-		num = BIGDN(num);
-		t2 = BIGDN(t2);
-	    } while (++i < ny);
-	    num += zds[j - ny + i] - t2;/* borrow from high digit; don't update */
-	    while (num) {		/* "add back" required */
-		i = 0; num = 0; q--;
-		do {
-		    BDIGIT_DBL ee = num + yds[i];
-		    num = (BDIGIT_DBL)zds[j - ny + i] + ee;
-		    if (ee) zds[j - ny + i] = BIGLO(num);
-		    num = BIGDN(num);
-		} while (++i < ny);
-		num--;
-	    }
-	}
-	zds[j] = q;
-    } while (--j >= ny);
-    return Qnil;
+    return bignorm(bigmul0(x, y));
 }
 
 static VALUE
-bigdivrem(VALUE x, VALUE y, VALUE *divp, VALUE *modp)
+bigdivrem(VALUE x, VALUE y, volatile VALUE *divp, volatile VALUE *modp)
 {
-    struct big_div_struct bds;
-    long nx = RBIGNUM_LEN(x), ny = RBIGNUM_LEN(y);
-    long i, j;
-    volatile VALUE yy, z;
-    BDIGIT *xds, *yds, *zds, *tds;
-    BDIGIT_DBL t2;
-    BDIGIT dd, q;
+    long xn = BIGNUM_LEN(x), yn = BIGNUM_LEN(y);
+    VALUE z;
+    BDIGIT *xds, *yds, *zds;
+    BDIGIT dd;
+
+    VALUE q = Qnil, r = Qnil;
+    BDIGIT *qds, *rds;
+    long qn, rn;
 
-    if (BIGZEROP(y)) rb_num_zerodiv();
     yds = BDIGITS(y);
-    if (nx < ny || (nx == ny && BDIGITS(x)[nx - 1] < BDIGITS(y)[ny - 1])) {
+    BARY_TRUNC(yds, yn);
+    if (yn == 0)
+        rb_num_zerodiv();
+
+    xds = BDIGITS(x);
+    BARY_TRUNC(xds, xn);
+
+    if (xn < yn || (xn == yn && xds[xn - 1] < yds[yn - 1])) {
 	if (divp) *divp = rb_int2big(0);
 	if (modp) *modp = x;
 	return Qnil;
     }
-    xds = BDIGITS(x);
-    if (ny == 1) {
+    if (yn == 1) {
 	dd = yds[0];
-	z = rb_big_clone(x);
+	z = bignew(xn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
 	zds = BDIGITS(z);
-	t2 = 0; i = nx;
-	while (i--) {
-	    t2 = BIGUP(t2) + zds[i];
-	    zds[i] = (BDIGIT)(t2 / dd);
-	    t2 %= dd;
-	}
-	RBIGNUM_SET_SIGN(z, RBIGNUM_SIGN(x)==RBIGNUM_SIGN(y));
+        dd = bigdivrem_single(zds, xds, xn, dd);
 	if (modp) {
-	    *modp = rb_uint2big((VALUE)t2);
-	    RBIGNUM_SET_SIGN(*modp, RBIGNUM_SIGN(x));
+	    *modp = rb_uint2big((uintptr_t)dd);
+	    BIGNUM_SET_SIGN(*modp, BIGNUM_SIGN(x));
 	}
 	if (divp) *divp = z;
 	return Qnil;
     }
-    z = bignew(nx==ny?nx+2:nx+1, RBIGNUM_SIGN(x)==RBIGNUM_SIGN(y));
-    zds = BDIGITS(z);
-    if (nx==ny) zds[nx+1] = 0;
-    while (!yds[ny-1]) ny--;
-
-    dd = 0;
-    q = yds[ny-1];
-    while ((q & (1UL<<(BITSPERDIG-1))) == 0) {
-	q <<= 1UL;
-	dd++;
-    }
-    if (dd) {
-	yy = rb_big_clone(y);
-	tds = BDIGITS(yy);
-	j = 0;
-	t2 = 0;
-	while (j<ny) {
-	    t2 += (BDIGIT_DBL)yds[j]<<dd;
-	    tds[j++] = BIGLO(t2);
-	    t2 = BIGDN(t2);
-	}
-	yds = tds;
-	j = 0;
-	t2 = 0;
-	while (j<nx) {
-	    t2 += (BDIGIT_DBL)xds[j]<<dd;
-	    zds[j++] = BIGLO(t2);
-	    t2 = BIGDN(t2);
-	}
-	zds[j] = (BDIGIT)t2;
+    if (xn == 2 && yn == 2) {
+        BDIGIT_DBL x0 = bary2bdigitdbl(xds, 2);
+        BDIGIT_DBL y0 = bary2bdigitdbl(yds, 2);
+        BDIGIT_DBL q0 = x0 / y0;
+        BDIGIT_DBL r0 = x0 % y0;
+        if (divp) {
+            z = bignew(bdigit_roomof(sizeof(BDIGIT_DBL)), BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+            zds = BDIGITS(z);
+            zds[0] = BIGLO(q0);
+            zds[1] = BIGLO(BIGDN(q0));
+            *divp = z;
+        }
+        if (modp) {
+            z = bignew(bdigit_roomof(sizeof(BDIGIT_DBL)), BIGNUM_SIGN(x));
+            zds = BDIGITS(z);
+            zds[0] = BIGLO(r0);
+            zds[1] = BIGLO(BIGDN(r0));
+            *modp = z;
+        }
+        return Qnil;
+    }
+
+    if (divp) {
+        qn = xn + BIGDIVREM_EXTRA_WORDS;
+        q = bignew(qn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+        qds = BDIGITS(q);
     }
     else {
-	zds[nx] = 0;
-	j = nx;
-	while (j--) zds[j] = xds[j];
+        qn = 0;
+        qds = NULL;
     }
 
-    bds.nx = nx;
-    bds.ny = ny;
-    bds.zds = zds;
-    bds.yds = yds;
-    bds.stop = Qfalse;
-    if (RBIGNUM_LEN(x) > 10000 || RBIGNUM_LEN(y) > 10000) {
-	rb_thread_blocking_region(bigdivrem1, &bds, rb_big_stop, &bds.stop);
+    if (modp) {
+        rn = yn;
+        r = bignew(rn, BIGNUM_SIGN(x));
+        rds = BDIGITS(r);
     }
     else {
-	bigdivrem1(&bds);
+        rn = 0;
+        rds = NULL;
     }
 
-    if (divp) {			/* move quotient down in z */
-	*divp = rb_big_clone(z);
-	zds = BDIGITS(*divp);
-	j = (nx==ny ? nx+2 : nx+1) - ny;
-	for (i = 0;i < j;i++) zds[i] = zds[i+ny];
-	if (!zds[i-1]) i--;
-	RBIGNUM_SET_LEN(*divp, i);
-    }
-    if (modp) {			/* normalize remainder */
-	*modp = rb_big_clone(z);
-	zds = BDIGITS(*modp);
-	while (--ny && !zds[ny]); ++ny;
-	if (dd) {
-	    t2 = 0; i = ny;
-	    while(i--) {
-		t2 = (t2 | zds[i]) >> dd;
-		q = zds[i];
-		zds[i] = BIGLO(t2);
-		t2 = BIGUP(q);
-	    }
-	}
-	if (!zds[ny-1]) ny--;
-	RBIGNUM_SET_LEN(*modp, ny);
-	RBIGNUM_SET_SIGN(*modp, RBIGNUM_SIGN(x));
+    bary_divmod_branch(qds, qn, rds, rn, xds, xn, yds, yn);
+
+    if (divp) {
+        bigtrunc(q);
+        *divp = q;
     }
-    return z;
+    if (modp) {
+        bigtrunc(r);
+        *modp = r;
+    }
+
+    return Qnil;
 }
 
 static void
-bigdivmod(VALUE x, VALUE y, VALUE *divp, VALUE *modp)
+bigdivmod(VALUE x, VALUE y, volatile VALUE *divp, volatile VALUE *modp)
 {
     VALUE mod;
 
     bigdivrem(x, y, divp, &mod);
-    if (RBIGNUM_SIGN(x) != RBIGNUM_SIGN(y) && !BIGZEROP(mod)) {
+    if (BIGNUM_SIGN(x) != BIGNUM_SIGN(y) && !BIGZEROP(mod)) {
 	if (divp) *divp = bigadd(*divp, rb_int2big(1), 0);
 	if (modp) *modp = bigadd(mod, y, 1);
     }
@@ -1801,26 +6058,25 @@ rb_big_divide(VALUE x, VALUE y, ID op)
 {
     VALUE z;
 
-    switch (TYPE(y)) {
-      case T_FIXNUM:
+    if (FIXNUM_P(y)) {
 	y = rb_int2big(FIX2LONG(y));
-	break;
-
-      case T_BIGNUM:
-	break;
-
-      case T_FLOAT:
-	{
-	    double div = rb_big2dbl(x) / RFLOAT_VALUE(y);
-	    if (op == '/') {
-		return DBL2NUM(div);
-	    }
-	    else {
-		return rb_dbl2big(div);
-	    }
+    }
+    else if (RB_BIGNUM_TYPE_P(y)) {
+    }
+    else if (RB_FLOAT_TYPE_P(y)) {
+	if (op == '/') {
+            double dx = rb_big2dbl(x);
+            return rb_flo_div_flo(DBL2NUM(dx), y);
 	}
-
-      default:
+	else {
+            VALUE v;
+	    double dy = RFLOAT_VALUE(y);
+	    if (dy == 0.0) rb_num_zerodiv();
+            v = rb_big_divide(x, y, '/');
+            return rb_dbl2big(RFLOAT_VALUE(v));
+	}
+    }
+    else {
 	return rb_num_coerce_bin(x, y, op);
     }
     bigdivmod(x, y, &z, 0);
@@ -1828,48 +6084,27 @@ rb_big_divide(VALUE x, VALUE y, ID op)
     return bignorm(z);
 }
 
-/*
- *  call-seq:
- *     big / other     => Numeric
- *
- *  Divides big by other, returning the result.
- */
-
 VALUE
 rb_big_div(VALUE x, VALUE y)
 {
-  return rb_big_divide(x, y, '/');
+    return rb_big_divide(x, y, '/');
 }
 
 VALUE
 rb_big_idiv(VALUE x, VALUE y)
 {
-  return rb_big_divide(x, y, rb_intern("div"));
+    return rb_big_divide(x, y, idDiv);
 }
 
-/*
- *  call-seq:
- *     big % other         => Numeric
- *     big.modulo(other)   => Numeric
- *
- *  Returns big modulo other. See Numeric.divmod for more
- *  information.
- */
-
 VALUE
 rb_big_modulo(VALUE x, VALUE y)
 {
     VALUE z;
 
-    switch (TYPE(y)) {
-      case T_FIXNUM:
+    if (FIXNUM_P(y)) {
 	y = rb_int2big(FIX2LONG(y));
-	break;
-
-      case T_BIGNUM:
-	break;
-
-      default:
+    }
+    else if (!RB_BIGNUM_TYPE_P(y)) {
 	return rb_num_coerce_bin(x, y, '%');
     }
     bigdivmod(x, y, 0, &z);
@@ -1877,29 +6112,15 @@ rb_big_modulo(VALUE x, VALUE y)
     return bignorm(z);
 }
 
-/*
- *  call-seq:
- *     big.remainder(numeric)    => number
- *
- *  Returns the remainder after dividing <i>big</i> by <i>numeric</i>.
- *
- *     -1234567890987654321.remainder(13731)      #=> -6966
- *     -1234567890987654321.remainder(13731.24)   #=> -9906.22531493148
- */
-static VALUE
+VALUE
 rb_big_remainder(VALUE x, VALUE y)
 {
     VALUE z;
 
-    switch (TYPE(y)) {
-      case T_FIXNUM:
+    if (FIXNUM_P(y)) {
 	y = rb_int2big(FIX2LONG(y));
-	break;
-
-      case T_BIGNUM:
-	break;
-
-      default:
+    }
+    else if (!RB_BIGNUM_TYPE_P(y)) {
 	return rb_num_coerce_bin(x, y, rb_intern("remainder"));
     }
     bigdivrem(x, y, 0, &z);
@@ -1907,192 +6128,114 @@ rb_big_remainder(VALUE x, VALUE y)
     return bignorm(z);
 }
 
-/*
- *  call-seq:
- *     big.divmod(numeric)   => array
- *
- *  See <code>Numeric#divmod</code>.
- *
- */
 VALUE
 rb_big_divmod(VALUE x, VALUE y)
 {
     VALUE div, mod;
 
-    switch (TYPE(y)) {
-      case T_FIXNUM:
+    if (FIXNUM_P(y)) {
 	y = rb_int2big(FIX2LONG(y));
-	break;
-
-      case T_BIGNUM:
-	break;
-
-      default:
-	return rb_num_coerce_bin(x, y, rb_intern("divmod"));
+    }
+    else if (!RB_BIGNUM_TYPE_P(y)) {
+        return rb_num_coerce_bin(x, y, idDivmod);
     }
     bigdivmod(x, y, &div, &mod);
 
     return rb_assoc_new(bignorm(div), bignorm(mod));
 }
 
-static int
-bdigbitsize(BDIGIT x)
-{
-    int size = 1;
-    int nb = BITSPERDIG / 2;
-    BDIGIT bits = (~0 << nb);
-
-    if (!x) return 0;
-    while (x > 1) {
-	if (x & bits) {
-	    size += nb;
-	    x >>= nb;
-	}
-	x &= ~bits;
-	nb /= 2;
-	bits >>= nb;
-    }
-
-    return size;
-}
-
-static VALUE big_lshift(VALUE, unsigned long);
-static VALUE big_rshift(VALUE, unsigned long);
-
-static VALUE big_shift(VALUE x, int n)
+static VALUE
+big_shift(VALUE x, long n)
 {
     if (n < 0)
-	return big_lshift(x, (unsigned int)-n);
+	return big_lshift(x, 1+(unsigned long)(-(n+1)));
     else if (n > 0)
-	return big_rshift(x, (unsigned int)n);
+	return big_rshift(x, (unsigned long)n);
     return x;
 }
 
-/*
- *  call-seq:
-  *     big.fdiv(numeric) -> float
- *
- *  Returns the floating point result of dividing <i>big</i> by
- *  <i>numeric</i>.
- *
- *     -1234567890987654321.fdiv(13731)      #=> -89910996357705.5
- *     -1234567890987654321.fdiv(13731.24)   #=> -89909424858035.7
- *
- */
+enum {DBL_BIGDIG = ((DBL_MANT_DIG + BITSPERDIG) / BITSPERDIG)};
 
-static VALUE
-rb_big_fdiv(VALUE x, VALUE y)
+static double
+big_fdiv(VALUE x, VALUE y, long ey)
 {
-    double dx = big2dbl(x);
-    double dy;
-
-    if (isinf(dx)) {
-#define DBL_BIGDIG ((DBL_MANT_DIG + BITSPERDIG) / BITSPERDIG)
-	VALUE z;
-	int ex, ey;
-
-	ex = (RBIGNUM_LEN(bigtrunc(x)) - 1) * BITSPERDIG;
-	ex += bdigbitsize(BDIGITS(x)[RBIGNUM_LEN(x) - 1]);
-	ex -= 2 * DBL_BIGDIG * BITSPERDIG;
-	if (ex) x = big_shift(x, ex);
-
-	switch (TYPE(y)) {
-	  case T_FIXNUM:
-	    y = rb_int2big(FIX2LONG(y));
-	  case T_BIGNUM: {
-	    ey = (RBIGNUM_LEN(bigtrunc(y)) - 1) * BITSPERDIG;
-	    ey += bdigbitsize(BDIGITS(y)[RBIGNUM_LEN(y) - 1]);
-	    ey -= DBL_BIGDIG * BITSPERDIG;
-	    if (ey) y = big_shift(y, ey);
-	  bignum:
-	    bigdivrem(x, y, &z, 0);
-	    return DBL2NUM(ldexp(big2dbl(z), ex - ey));
-	  }
-	  case T_FLOAT:
-	    if (isnan(RFLOAT_VALUE(y))) return y;
-	    y = dbl2big(ldexp(frexp(RFLOAT_VALUE(y), &ey), DBL_MANT_DIG));
-	    ey -= DBL_MANT_DIG;
-	    goto bignum;
-	}
+    VALUE z;
+    long l, ex;
+
+    bigtrunc(x);
+    l = BIGNUM_LEN(x);
+    ex = l * BITSPERDIG - nlz(BDIGITS(x)[l-1]);
+    ex -= 2 * DBL_BIGDIG * BITSPERDIG;
+    if (ex > BITSPERDIG) ex -= BITSPERDIG;
+    else if (ex > 0) ex = 0;
+    if (ex) x = big_shift(x, ex);
+
+    bigdivrem(x, y, &z, 0);
+    l = ex - ey;
+#if SIZEOF_LONG > SIZEOF_INT
+    {
+	/* Visual C++ can't be here */
+	if (l > INT_MAX) return HUGE_VAL;
+	if (l < INT_MIN) return 0.0;
     }
-    switch (TYPE(y)) {
-      case T_FIXNUM:
-	dy = (double)FIX2LONG(y);
-	break;
-
-      case T_BIGNUM:
-	dy = rb_big2dbl(y);
-	break;
+#endif
+    return ldexp(big2dbl(z), (int)l);
+}
 
-      case T_FLOAT:
-	dy = RFLOAT_VALUE(y);
-	break;
+static double
+big_fdiv_int(VALUE x, VALUE y)
+{
+    long l, ey;
+    bigtrunc(y);
+    l = BIGNUM_LEN(y);
+    ey = l * BITSPERDIG - nlz(BDIGITS(y)[l-1]);
+    ey -= DBL_BIGDIG * BITSPERDIG;
+    if (ey) y = big_shift(y, ey);
+    return big_fdiv(x, y, ey);
+}
 
-      default:
-	return rb_num_coerce_bin(x, y, rb_intern("fdiv"));
-    }
-    return DBL2NUM(dx / dy);
+static double
+big_fdiv_float(VALUE x, VALUE y)
+{
+    int i;
+    y = dbl2big(ldexp(frexp(RFLOAT_VALUE(y), &i), DBL_MANT_DIG));
+    return big_fdiv(x, y, i - DBL_MANT_DIG);
 }
 
-static VALUE
-bigsqr(VALUE x)
+double
+rb_big_fdiv_double(VALUE x, VALUE y)
 {
-    long len = RBIGNUM_LEN(x), k = len / 2, i;
-    VALUE a, b, a2, z;
-    BDIGIT_DBL num;
+    double dx, dy;
+    VALUE v;
 
-    if (len < 4000 / BITSPERDIG) {
-	return bigtrunc(rb_big_mul0(x, x));
-    }
-
-    a = bignew(len - k, 1);
-    MEMCPY(BDIGITS(a), BDIGITS(x) + k, BDIGIT, len - k);
-    b = bignew(k, 1);
-    MEMCPY(BDIGITS(b), BDIGITS(x), BDIGIT, k);
-
-    a2 = bigtrunc(bigsqr(a));
-    z = bigsqr(b);
-    rb_big_realloc(z, (len = 2 * k + RBIGNUM_LEN(a2)) + 1);
-    while (RBIGNUM_LEN(z) < 2 * k) {
-	BDIGITS(z)[RBIGNUM_LEN(z)] = 0;
-	RBIGNUM_SET_LEN(z, RBIGNUM_LEN(z)+1);
-    }
-    MEMCPY(BDIGITS(z) + 2 * k, BDIGITS(a2), BDIGIT, RBIGNUM_LEN(a2));
-    RBIGNUM_SET_LEN(z, len);
-    a2 = bigtrunc(rb_big_mul0(a, b));
-    len = RBIGNUM_LEN(a2);
-    for (i = 0, num = 0; i < len; i++) {
-	num += (BDIGIT_DBL)BDIGITS(z)[i + k] + ((BDIGIT_DBL)BDIGITS(a2)[i] << 1);
-	BDIGITS(z)[i + k] = BIGLO(num);
-	num = BIGDN(num);
+    dx = big2dbl(x);
+    if (FIXNUM_P(y)) {
+	dy = (double)FIX2LONG(y);
+	if (isinf(dx))
+	    return big_fdiv_int(x, rb_int2big(FIX2LONG(y)));
     }
-    if (num) {
-	len = RBIGNUM_LEN(z);
-	for (i += k; i < len && num; ++i) {
-	    num += (BDIGIT_DBL)BDIGITS(z)[i];
-	    BDIGITS(z)[i] = BIGLO(num);
-	    num = BIGDN(num);
-	}
-	if (num) {
-	    BDIGITS(z)[RBIGNUM_LEN(z)] = BIGLO(num);
-	    RBIGNUM_SET_LEN(z, RBIGNUM_LEN(z)+1);
-	}
+    else if (RB_BIGNUM_TYPE_P(y)) {
+	return big_fdiv_int(x, y);
     }
-    return bigtrunc(z);
+    else if (RB_FLOAT_TYPE_P(y)) {
+	dy = RFLOAT_VALUE(y);
+	if (isnan(dy))
+	    return dy;
+	if (isinf(dx))
+	    return big_fdiv_float(x, y);
+    }
+    else {
+        return NUM2DBL(rb_num_coerce_bin(x, y, idFdiv));
+    }
+    v = rb_flo_div_flo(DBL2NUM(dx), DBL2NUM(dy));
+    return NUM2DBL(v);
 }
 
-/*
- *  call-seq:
- *     big ** exponent   => numeric
- *
- *  Raises _big_ to the _exponent_ power (which may be an integer, float,
- *  or anything that will coerce to a number). The result may be
- *  a Fixnum, Bignum, or Float
- *
- *    123456789 ** 2      #=> 15241578750190521
- *    123456789 ** 1.2    #=> 5126464716.09932
- *    123456789 ** -2     #=> 6.5610001194102e-17
- */
+VALUE
+rb_big_fdiv(VALUE x, VALUE y)
+{
+    return DBL2NUM(rb_big_fdiv_double(x, y));
+}
 
 VALUE
 rb_big_pow(VALUE x, VALUE y)
@@ -2100,555 +6243,914 @@ rb_big_pow(VALUE x, VALUE y)
     double d;
     SIGNED_VALUE yy;
 
+  again:
     if (y == INT2FIX(0)) return INT2FIX(1);
-    switch (TYPE(y)) {
-      case T_FLOAT:
+    if (y == INT2FIX(1)) return x;
+    if (RB_FLOAT_TYPE_P(y)) {
 	d = RFLOAT_VALUE(y);
-	break;
-
-      case T_BIGNUM:
+	if ((BIGNUM_NEGATIVE_P(x) && !BIGZEROP(x))) {
+            return rb_dbl_complex_new_polar_pi(pow(-rb_big2dbl(x), d), d);
+	}
+    }
+    else if (RB_BIGNUM_TYPE_P(y)) {
+	y = bignorm(y);
+	if (FIXNUM_P(y))
+	    goto again;
 	rb_warn("in a**b, b may be too big");
 	d = rb_big2dbl(y);
-	break;
-
-      case T_FIXNUM:
+    }
+    else if (FIXNUM_P(y)) {
 	yy = FIX2LONG(y);
 
-	if (yy < 0)
-	    return rb_funcall(rb_rational_raw1(x), rb_intern("**"), 1, y);
+        if (yy < 0) {
+            x = rb_big_pow(x, LONG2NUM(-yy));
+            if (RB_INTEGER_TYPE_P(x))
+                return rb_rational_raw(INT2FIX(1), x);
+            else
+                return DBL2NUM(1.0 / NUM2DBL(x));
+        }
 	else {
 	    VALUE z = 0;
 	    SIGNED_VALUE mask;
-	    const long BIGLEN_LIMIT = 1024*1024 / SIZEOF_BDIGITS;
+            const size_t xbits = rb_absint_numwords(x, 1, NULL);
+	    const size_t BIGLEN_LIMIT = 32*1024*1024;
 
-	    if ((RBIGNUM_LEN(x) > BIGLEN_LIMIT) ||
-		(RBIGNUM_LEN(x) > BIGLEN_LIMIT / yy)) {
+	    if (xbits == (size_t)-1 ||
+                (xbits > BIGLEN_LIMIT) ||
+                (xbits * yy > BIGLEN_LIMIT)) {
 		rb_warn("in a**b, b may be too big");
 		d = (double)yy;
-		break;
 	    }
-	    for (mask = FIXNUM_MAX + 1; mask; mask >>= 1) {
-		if (z) z = bigtrunc(bigsqr(z));
-		if (yy & mask) {
-		    z = z ? bigtrunc(rb_big_mul0(z, x)) : x;
+	    else {
+		for (mask = FIXNUM_MAX + 1; mask; mask >>= 1) {
+		    if (z) z = bigsq(z);
+		    if (yy & mask) {
+			z = z ? bigtrunc(bigmul0(z, x)) : x;
+		    }
 		}
+		return bignorm(z);
 	    }
-	    return bignorm(z);
 	}
-	/* NOTREACHED */
-	break;
-
-      default:
-	return rb_num_coerce_bin(x, y, rb_intern("**"));
+    }
+    else {
+	return rb_num_coerce_bin(x, y, idPow);
     }
     return DBL2NUM(pow(rb_big2dbl(x), d));
 }
 
 static VALUE
-bit_coerce(VALUE x)
+bigand_int(VALUE x, long xn, BDIGIT hibitsx, long y)
 {
-    while (!FIXNUM_P(x) && TYPE(x) != T_BIGNUM) {
-	if (TYPE(x) == T_FLOAT) {
-	    rb_raise(rb_eTypeError, "can't convert Float into Integer");
-	}
-	x = rb_to_int(x);
+    VALUE z;
+    BDIGIT *xds, *zds;
+    long zn;
+    long i;
+    BDIGIT hibitsy;
+
+    if (y == 0) return INT2FIX(0);
+    if (xn == 0) return hibitsx ? LONG2NUM(y) : 0;
+    hibitsy = 0 <= y ? 0 : BDIGMAX;
+    xds = BDIGITS(x);
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+    if (!hibitsy) {
+	y &= xds[0];
+	return LONG2NUM(y);
     }
-    return x;
-}
+#endif
 
-/*
- * call-seq:
- *     big & numeric   =>  integer
- *
- * Performs bitwise +and+ between _big_ and _numeric_.
- */
+    zn = xn;
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    if (hibitsx && zn < bdigit_roomof(SIZEOF_LONG))
+        zn = bdigit_roomof(SIZEOF_LONG);
+#endif
 
-VALUE
-rb_big_and(VALUE xx, VALUE yy)
-{
-    volatile VALUE x, y, z;
-    BDIGIT *ds1, *ds2, *zds;
-    long i, l1, l2;
-    char sign;
+    z = bignew(zn, 0);
+    zds = BDIGITS(z);
 
-    x = xx;
-    y = bit_coerce(yy);
-    if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
-    }
-    if (!RBIGNUM_SIGN(y)) {
-	y = rb_big_clone(y);
-	get2comp(y);
-    }
-    if (!RBIGNUM_SIGN(x)) {
-	x = rb_big_clone(x);
-	get2comp(x);
-    }
-    if (RBIGNUM_LEN(x) > RBIGNUM_LEN(y)) {
-	l1 = RBIGNUM_LEN(y);
-	l2 = RBIGNUM_LEN(x);
-	ds1 = BDIGITS(y);
-	ds2 = BDIGITS(x);
-	sign = RBIGNUM_SIGN(y);
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+    i = 1;
+    zds[0] = xds[0] & BIGLO(y);
+#else
+    for (i=0; i < xn; i++) {
+        if (y == 0 || y == -1) break;
+        zds[i] = xds[i] & BIGLO(y);
+        y = BIGDN(y);
     }
-    else {
-	l1 = RBIGNUM_LEN(x);
-	l2 = RBIGNUM_LEN(y);
-	ds1 = BDIGITS(x);
-	ds2 = BDIGITS(y);
-	sign = RBIGNUM_SIGN(x);
+    for (; i < zn; i++) {
+        if (y == 0 || y == -1) break;
+        zds[i] = hibitsx & BIGLO(y);
+        y = BIGDN(y);
     }
-    z = bignew(l2, RBIGNUM_SIGN(x) || RBIGNUM_SIGN(y));
-    zds = BDIGITS(z);
-
-    for (i=0; i<l1; i++) {
-	zds[i] = ds1[i] & ds2[i];
+#endif
+    for (;i < xn; i++) {
+	zds[i] = xds[i] & hibitsy;
     }
-    for (; i<l2; i++) {
-	zds[i] = sign?0:ds2[i];
+    for (;i < zn; i++) {
+	zds[i] = hibitsx & hibitsy;
     }
-    if (!RBIGNUM_SIGN(z)) get2comp(z);
+    twocomp2abs_bang(z, hibitsx && hibitsy);
+    RB_GC_GUARD(x);
     return bignorm(z);
 }
 
-/*
- * call-seq:
- *     big | numeric   =>  integer
- *
- * Performs bitwise +or+ between _big_ and _numeric_.
- */
-
 VALUE
-rb_big_or(VALUE xx, VALUE yy)
+rb_big_and(VALUE x, VALUE y)
 {
-    volatile VALUE x, y, z;
+    VALUE z;
     BDIGIT *ds1, *ds2, *zds;
-    long i, l1, l2;
-    char sign;
+    long i, xn, yn, n1, n2;
+    BDIGIT hibitsx, hibitsy;
+    BDIGIT hibits1, hibits2;
+    VALUE tmpv;
+    BDIGIT tmph;
+    long tmpn;
 
-    x = xx;
-    y = bit_coerce(yy);
-    if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
+    if (!RB_INTEGER_TYPE_P(y)) {
+	return rb_num_coerce_bit(x, y, '&');
     }
 
-    if (!RBIGNUM_SIGN(y)) {
-	y = rb_big_clone(y);
-	get2comp(y);
+    hibitsx = abs2twocomp(&x, &xn);
+    if (FIXNUM_P(y)) {
+	return bigand_int(x, xn, hibitsx, FIX2LONG(y));
     }
-    if (!RBIGNUM_SIGN(x)) {
-	x = rb_big_clone(x);
-	get2comp(x);
+    hibitsy = abs2twocomp(&y, &yn);
+    if (xn > yn) {
+        tmpv = x; x = y; y = tmpv;
+        tmpn = xn; xn = yn; yn = tmpn;
+        tmph = hibitsx; hibitsx = hibitsy; hibitsy = tmph;
     }
-    if (RBIGNUM_LEN(x) > RBIGNUM_LEN(y)) {
-	l1 = RBIGNUM_LEN(y);
-	l2 = RBIGNUM_LEN(x);
-	ds1 = BDIGITS(y);
-	ds2 = BDIGITS(x);
-	sign = RBIGNUM_SIGN(y);
+    n1 = xn;
+    n2 = yn;
+    ds1 = BDIGITS(x);
+    ds2 = BDIGITS(y);
+    hibits1 = hibitsx;
+    hibits2 = hibitsy;
+
+    if (!hibits1)
+        n2 = n1;
+
+    z = bignew(n2, 0);
+    zds = BDIGITS(z);
+
+    for (i=0; i<n1; i++) {
+	zds[i] = ds1[i] & ds2[i];
     }
-    else {
-	l1 = RBIGNUM_LEN(x);
-	l2 = RBIGNUM_LEN(y);
-	ds1 = BDIGITS(x);
-	ds2 = BDIGITS(y);
-	sign = RBIGNUM_SIGN(x);
+    for (; i<n2; i++) {
+	zds[i] = hibits1 & ds2[i];
     }
-    z = bignew(l2, RBIGNUM_SIGN(x) && RBIGNUM_SIGN(y));
+    twocomp2abs_bang(z, hibits1 && hibits2);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    return bignorm(z);
+}
+
+static VALUE
+bigor_int(VALUE x, long xn, BDIGIT hibitsx, long y)
+{
+    VALUE z;
+    BDIGIT *xds, *zds;
+    long zn;
+    long i;
+    BDIGIT hibitsy;
+
+    if (y == -1) return INT2FIX(-1);
+    if (xn == 0) return hibitsx ? INT2FIX(-1) : LONG2FIX(y);
+    hibitsy = 0 <= y ? 0 : BDIGMAX;
+    xds = BDIGITS(x);
+
+    zn = BIGNUM_LEN(x);
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    if (zn < bdigit_roomof(SIZEOF_LONG))
+        zn = bdigit_roomof(SIZEOF_LONG);
+#endif
+    z = bignew(zn, 0);
     zds = BDIGITS(z);
 
-    for (i=0; i<l1; i++) {
-	zds[i] = ds1[i] | ds2[i];
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+    i = 1;
+    zds[0] = xds[0] | BIGLO(y);
+    if (i < zn)
+        goto y_is_fixed_point;
+    goto finish;
+#else
+    for (i=0; i < xn; i++) {
+        if (y == 0 || y == -1) goto y_is_fixed_point;
+        zds[i] = xds[i] | BIGLO(y);
+        y = BIGDN(y);
+    }
+    if (hibitsx)
+        goto fill_hibits;
+    for (; i < zn; i++) {
+        if (y == 0 || y == -1) goto y_is_fixed_point;
+        zds[i] = BIGLO(y);
+        y = BIGDN(y);
+    }
+  goto finish;
+#endif
+
+  y_is_fixed_point:
+    if (hibitsy)
+        goto fill_hibits;
+    for (; i < xn; i++) {
+        zds[i] = xds[i];
+    }
+    if (hibitsx)
+        goto fill_hibits;
+    for (; i < zn; i++) {
+        zds[i] = 0;
     }
-    for (; i<l2; i++) {
-	zds[i] = sign?ds2[i]:(BIGRAD-1);
+  goto finish;
+
+  fill_hibits:
+    for (; i < zn; i++) {
+        zds[i] = BDIGMAX;
     }
-    if (!RBIGNUM_SIGN(z)) get2comp(z);
 
+  finish:
+    twocomp2abs_bang(z, hibitsx || hibitsy);
+    RB_GC_GUARD(x);
     return bignorm(z);
 }
 
-/*
- * call-seq:
- *     big ^ numeric   =>  integer
- *
- * Performs bitwise +exclusive or+ between _big_ and _numeric_.
- */
-
 VALUE
-rb_big_xor(VALUE xx, VALUE yy)
+rb_big_or(VALUE x, VALUE y)
 {
-    volatile VALUE x, y;
     VALUE z;
     BDIGIT *ds1, *ds2, *zds;
-    long i, l1, l2;
-    char sign;
+    long i, xn, yn, n1, n2;
+    BDIGIT hibitsx, hibitsy;
+    BDIGIT hibits1, hibits2;
+    VALUE tmpv;
+    BDIGIT tmph;
+    long tmpn;
 
-    x = xx;
-    y = bit_coerce(yy);
-    if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
+    if (!RB_INTEGER_TYPE_P(y)) {
+	return rb_num_coerce_bit(x, y, '|');
     }
 
-    if (!RBIGNUM_SIGN(y)) {
-	y = rb_big_clone(y);
-	get2comp(y);
-    }
-    if (!RBIGNUM_SIGN(x)) {
-	x = rb_big_clone(x);
-	get2comp(x);
-    }
-    if (RBIGNUM_LEN(x) > RBIGNUM_LEN(y)) {
-	l1 = RBIGNUM_LEN(y);
-	l2 = RBIGNUM_LEN(x);
-	ds1 = BDIGITS(y);
-	ds2 = BDIGITS(x);
-	sign = RBIGNUM_SIGN(y);
+    hibitsx = abs2twocomp(&x, &xn);
+    if (FIXNUM_P(y)) {
+	return bigor_int(x, xn, hibitsx, FIX2LONG(y));
     }
-    else {
-	l1 = RBIGNUM_LEN(x);
-	l2 = RBIGNUM_LEN(y);
-	ds1 = BDIGITS(x);
-	ds2 = BDIGITS(y);
-	sign = RBIGNUM_SIGN(x);
+    hibitsy = abs2twocomp(&y, &yn);
+    if (xn > yn) {
+        tmpv = x; x = y; y = tmpv;
+        tmpn = xn; xn = yn; yn = tmpn;
+        tmph = hibitsx; hibitsx = hibitsy; hibitsy = tmph;
     }
-    RBIGNUM_SET_SIGN(x, RBIGNUM_SIGN(x)?1:0);
-    RBIGNUM_SET_SIGN(y, RBIGNUM_SIGN(y)?1:0);
-    z = bignew(l2, !(RBIGNUM_SIGN(x) ^ RBIGNUM_SIGN(y)));
+    n1 = xn;
+    n2 = yn;
+    ds1 = BDIGITS(x);
+    ds2 = BDIGITS(y);
+    hibits1 = hibitsx;
+    hibits2 = hibitsy;
+
+    if (hibits1)
+        n2 = n1;
+
+    z = bignew(n2, 0);
     zds = BDIGITS(z);
 
-    for (i=0; i<l1; i++) {
-	zds[i] = ds1[i] ^ ds2[i];
+    for (i=0; i<n1; i++) {
+	zds[i] = ds1[i] | ds2[i];
     }
-    for (; i<l2; i++) {
-	zds[i] = sign?ds2[i]:~ds2[i];
+    for (; i<n2; i++) {
+	zds[i] = hibits1 | ds2[i];
     }
-    if (!RBIGNUM_SIGN(z)) get2comp(z);
-
+    twocomp2abs_bang(z, hibits1 || hibits2);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
     return bignorm(z);
 }
 
 static VALUE
-check_shiftdown(VALUE y, VALUE x)
+bigxor_int(VALUE x, long xn, BDIGIT hibitsx, long y)
 {
-    if (!RBIGNUM_LEN(x)) return INT2FIX(0);
-    if (RBIGNUM_LEN(y) > SIZEOF_LONG / SIZEOF_BDIGITS) {
-	return RBIGNUM_SIGN(x) ? INT2FIX(0) : INT2FIX(-1);
+    VALUE z;
+    BDIGIT *xds, *zds;
+    long zn;
+    long i;
+    BDIGIT hibitsy;
+
+    hibitsy = 0 <= y ? 0 : BDIGMAX;
+    xds = BDIGITS(x);
+    zn = BIGNUM_LEN(x);
+#if SIZEOF_BDIGIT < SIZEOF_LONG
+    if (zn < bdigit_roomof(SIZEOF_LONG))
+        zn = bdigit_roomof(SIZEOF_LONG);
+#endif
+    z = bignew(zn, 0);
+    zds = BDIGITS(z);
+
+#if SIZEOF_BDIGIT >= SIZEOF_LONG
+    i = 1;
+    zds[0] = xds[0] ^ BIGLO(y);
+#else
+    for (i = 0; i < xn; i++) {
+        zds[i] = xds[i] ^ BIGLO(y);
+        y = BIGDN(y);
     }
-    return Qnil;
+    for (; i < zn; i++) {
+        zds[i] = hibitsx ^ BIGLO(y);
+        y = BIGDN(y);
+    }
+#endif
+    for (; i < xn; i++) {
+        zds[i] = xds[i] ^ hibitsy;
+    }
+    for (; i < zn; i++) {
+        zds[i] = hibitsx ^ hibitsy;
+    }
+    twocomp2abs_bang(z, (hibitsx ^ hibitsy) != 0);
+    RB_GC_GUARD(x);
+    return bignorm(z);
 }
 
-/*
- * call-seq:
- *     big << numeric   =>  integer
- *
- * Shifts big left _numeric_ positions (right if _numeric_ is negative).
- */
+VALUE
+rb_big_xor(VALUE x, VALUE y)
+{
+    VALUE z;
+    BDIGIT *ds1, *ds2, *zds;
+    long i, xn, yn, n1, n2;
+    BDIGIT hibitsx, hibitsy;
+    BDIGIT hibits1, hibits2;
+    VALUE tmpv;
+    BDIGIT tmph;
+    long tmpn;
+
+    if (!RB_INTEGER_TYPE_P(y)) {
+	return rb_num_coerce_bit(x, y, '^');
+    }
+
+    hibitsx = abs2twocomp(&x, &xn);
+    if (FIXNUM_P(y)) {
+	return bigxor_int(x, xn, hibitsx, FIX2LONG(y));
+    }
+    hibitsy = abs2twocomp(&y, &yn);
+    if (xn > yn) {
+        tmpv = x; x = y; y = tmpv;
+        tmpn = xn; xn = yn; yn = tmpn;
+        tmph = hibitsx; hibitsx = hibitsy; hibitsy = tmph;
+    }
+    n1 = xn;
+    n2 = yn;
+    ds1 = BDIGITS(x);
+    ds2 = BDIGITS(y);
+    hibits1 = hibitsx;
+    hibits2 = hibitsy;
+
+    z = bignew(n2, 0);
+    zds = BDIGITS(z);
+
+    for (i=0; i<n1; i++) {
+	zds[i] = ds1[i] ^ ds2[i];
+    }
+    for (; i<n2; i++) {
+	zds[i] = hibitsx ^ ds2[i];
+    }
+    twocomp2abs_bang(z, (hibits1 ^ hibits2) != 0);
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    return bignorm(z);
+}
 
 VALUE
 rb_big_lshift(VALUE x, VALUE y)
 {
-    long shift;
-    int neg = 0;
+    int lshift_p;
+    size_t shift_numdigits;
+    int shift_numbits;
 
     for (;;) {
 	if (FIXNUM_P(y)) {
-	    shift = FIX2LONG(y);
-	    if (shift < 0) {
-		neg = 1;
-		shift = -shift;
+	    long l = FIX2LONG(y);
+            unsigned long shift;
+	    if (0 <= l) {
+		lshift_p = 1;
+                shift = l;
+            }
+            else {
+		lshift_p = 0;
+		shift = 1+(unsigned long)(-(l+1));
 	    }
-	    break;
+            shift_numbits = (int)(shift & (BITSPERDIG-1));
+            shift_numdigits = shift >> bit_length(BITSPERDIG-1);
+            return bignorm(big_shift3(x, lshift_p, shift_numdigits, shift_numbits));
 	}
-	else if (TYPE(y) == T_BIGNUM) {
-	    if (!RBIGNUM_SIGN(y)) {
-		VALUE t = check_shiftdown(y, x);
-		if (!NIL_P(t)) return t;
-		neg = 1;
-	    }
-	    shift = big2ulong(y, "long", Qtrue);
-	    break;
+	else if (RB_BIGNUM_TYPE_P(y)) {
+            return bignorm(big_shift2(x, 1, y));
 	}
 	y = rb_to_int(y);
     }
-
-    if (neg) return big_rshift(x, shift);
-    return big_lshift(x, shift);
-}
-
-static VALUE
-big_lshift(VALUE x, unsigned long shift)
-{
-    BDIGIT *xds, *zds;
-    long s1 = shift/BITSPERDIG;
-    int s2 = shift%BITSPERDIG;
-    VALUE z;
-    BDIGIT_DBL num = 0;
-    long len, i;
-
-    len = RBIGNUM_LEN(x);
-    z = bignew(len+s1+1, RBIGNUM_SIGN(x));
-    zds = BDIGITS(z);
-    for (i=0; i<s1; i++) {
-	*zds++ = 0;
-    }
-    xds = BDIGITS(x);
-    for (i=0; i<len; i++) {
-	num = num | (BDIGIT_DBL)*xds++<<s2;
-	*zds++ = BIGLO(num);
-	num = BIGDN(num);
-    }
-    *zds = BIGLO(num);
-    return bignorm(z);
 }
 
-/*
- * call-seq:
- *     big >> numeric   =>  integer
- *
- * Shifts big right _numeric_ positions (left if _numeric_ is negative).
- */
-
 VALUE
 rb_big_rshift(VALUE x, VALUE y)
 {
-    long shift;
-    int neg = 0;
+    int lshift_p;
+    size_t shift_numdigits;
+    int shift_numbits;
 
     for (;;) {
 	if (FIXNUM_P(y)) {
-	    shift = FIX2LONG(y);
-	    if (shift < 0) {
-		neg = 1;
-		shift = -shift;
+	    long l = FIX2LONG(y);
+            unsigned long shift;
+            if (0 <= l) {
+                lshift_p = 0;
+                shift = l;
+            }
+            else {
+                lshift_p = 1;
+		shift = 1+(unsigned long)(-(l+1));
 	    }
-	    break;
+            shift_numbits = (int)(shift & (BITSPERDIG-1));
+            shift_numdigits = shift >> bit_length(BITSPERDIG-1);
+            return bignorm(big_shift3(x, lshift_p, shift_numdigits, shift_numbits));
 	}
-	else if (TYPE(y) == T_BIGNUM) {
-	    if (RBIGNUM_SIGN(y)) {
-		VALUE t = check_shiftdown(y, x);
-		if (!NIL_P(t)) return t;
-	    }
-	    else {
-		neg = 1;
-	    }
-	    shift = big2ulong(y, "long", Qtrue);
-	    break;
+	else if (RB_BIGNUM_TYPE_P(y)) {
+            return bignorm(big_shift2(x, 0, y));
 	}
 	y = rb_to_int(y);
     }
-
-    if (neg) return big_lshift(x, shift);
-    return big_rshift(x, shift);
 }
 
-static VALUE
-big_rshift(VALUE x, unsigned long shift)
+VALUE
+rb_big_aref(VALUE x, VALUE y)
 {
-    BDIGIT *xds, *zds;
-    long s1 = shift/BITSPERDIG;
-    int s2 = shift%BITSPERDIG;
-    VALUE z;
-    BDIGIT_DBL num = 0;
-    long i, j;
-    volatile VALUE save_x;
+    BDIGIT *xds;
+    size_t shift;
+    size_t i, s1, s2;
+    long l;
+    BDIGIT bit;
 
-    if (s1 > RBIGNUM_LEN(x)) {
-	if (RBIGNUM_SIGN(x))
+    if (RB_BIGNUM_TYPE_P(y)) {
+	if (BIGNUM_NEGATIVE_P(y))
 	    return INT2FIX(0);
-	else
-	    return INT2FIX(-1);
+	bigtrunc(y);
+	if (BIGSIZE(y) > sizeof(size_t)) {
+	    return BIGNUM_SIGN(x) ? INT2FIX(0) : INT2FIX(1);
+	}
+#if SIZEOF_SIZE_T <= SIZEOF_LONG
+	shift = big2ulong(y, "long");
+#else
+	shift = big2ull(y, "long long");
+#endif
     }
-    if (!RBIGNUM_SIGN(x)) {
-	save_x = x = rb_big_clone(x);
-	get2comp(x);
+    else {
+	l = NUM2LONG(y);
+	if (l < 0) return INT2FIX(0);
+	shift = (size_t)l;
     }
+    s1 = shift/BITSPERDIG;
+    s2 = shift%BITSPERDIG;
+    bit = (BDIGIT)1 << s2;
+
+    if (s1 >= BIGNUM_LEN(x))
+        return BIGNUM_SIGN(x) ? INT2FIX(0) : INT2FIX(1);
+
     xds = BDIGITS(x);
-    i = RBIGNUM_LEN(x); j = i - s1;
-    if (j == 0) {
-	if (RBIGNUM_SIGN(x)) return INT2FIX(0);
-	else return INT2FIX(-1);
-    }
-    z = bignew(j, RBIGNUM_SIGN(x));
-    if (!RBIGNUM_SIGN(x)) {
-	num = ((BDIGIT_DBL)~0) << BITSPERDIG;
-    }
-    zds = BDIGITS(z);
-    while (i--, j--) {
-	num = (num | xds[i]) >> s2;
-	zds[j] = BIGLO(num);
-	num = BIGUP(xds[i]);
-    }
-    if (!RBIGNUM_SIGN(x)) {
-	get2comp(z);
-    }
-    return bignorm(z);
+    if (BIGNUM_POSITIVE_P(x))
+        return (xds[s1] & bit) ? INT2FIX(1) : INT2FIX(0);
+    if (xds[s1] & (bit-1))
+        return (xds[s1] & bit) ? INT2FIX(0) : INT2FIX(1);
+    for (i = 0; i < s1; i++)
+        if (xds[i])
+            return (xds[s1] & bit) ? INT2FIX(0) : INT2FIX(1);
+    return (xds[s1] & bit) ? INT2FIX(1) : INT2FIX(0);
+}
+
+VALUE
+rb_big_hash(VALUE x)
+{
+    st_index_t hash;
+
+    hash = rb_memhash(BDIGITS(x), sizeof(BDIGIT)*BIGNUM_LEN(x)) ^ BIGNUM_SIGN(x);
+    return ST2FIX(hash);
 }
 
 /*
- *  call-seq:
- *     big[n] -> 0, 1
- *
- *  Bit Reference---Returns the <em>n</em>th bit in the (assumed) binary
- *  representation of <i>big</i>, where <i>big</i>[0] is the least
- *  significant bit.
+ * call-seq:
+ *   big.coerce(numeric)  ->  array
  *
- *     a = 9**15
- *     50.downto(0) do |n|
- *       print a[n]
- *     end
+ * Returns an array with both a +numeric+ and a +big+ represented as Bignum
+ * objects.
  *
- *  <em>produces:</em>
+ * This is achieved by converting +numeric+ to a Bignum.
  *
- *     000101110110100000111000011110010100111100010111001
+ * A TypeError is raised if the +numeric+ is not a Fixnum or Bignum type.
  *
+ *     (0x3FFFFFFFFFFFFFFF+1).coerce(42)   #=> [42, 4611686018427387904]
  */
 
 static VALUE
-rb_big_aref(VALUE x, VALUE y)
+rb_int_coerce(VALUE x, VALUE y)
 {
-    BDIGIT *xds;
-    BDIGIT_DBL num;
-    VALUE shift;
-    long i, s1, s2;
-
-    if (TYPE(y) == T_BIGNUM) {
-	if (!RBIGNUM_SIGN(y))
-	    return INT2FIX(0);
-	if (RBIGNUM_LEN(bigtrunc(y)) > DIGSPERLONG) {
-	  out_of_range:
-	    return RBIGNUM_SIGN(x) ? INT2FIX(0) : INT2FIX(1);
-	}
-	shift = big2ulong(y, "long", Qfalse);
+    if (RB_INTEGER_TYPE_P(y)) {
+        return rb_assoc_new(y, x);
     }
     else {
-	i = NUM2LONG(y);
-	if (i < 0) return INT2FIX(0);
-	shift = (VALUE)i;
+        x = rb_Float(x);
+        y = rb_Float(y);
+        return rb_assoc_new(y, x);
     }
-    s1 = shift/BITSPERDIG;
-    s2 = shift%BITSPERDIG;
+}
 
-    if (s1 >= RBIGNUM_LEN(x)) goto out_of_range;
-    if (!RBIGNUM_SIGN(x)) {
-	xds = BDIGITS(x);
-	i = 0; num = 1;
-	while (num += ~xds[i], ++i <= s1) {
-	    num = BIGDN(num);
-	}
-    }
-    else {
-	num = BDIGITS(x)[s1];
+VALUE
+rb_big_abs(VALUE x)
+{
+    if (BIGNUM_NEGATIVE_P(x)) {
+	x = rb_big_clone(x);
+	BIGNUM_SET_POSITIVE_SIGN(x);
     }
-    if (num & ((BDIGIT_DBL)1<<s2))
-	return INT2FIX(1);
-    return INT2FIX(0);
+    return x;
 }
 
-/*
- * call-seq:
- *   big.hash   => fixnum
- *
- * Compute a hash based on the value of _big_.
- */
+int
+rb_big_sign(VALUE x)
+{
+    return BIGNUM_SIGN(x);
+}
 
-static VALUE
-rb_big_hash(VALUE x)
+size_t
+rb_big_size(VALUE big)
 {
-    int hash;
+    return BIGSIZE(big);
+}
 
-    hash = rb_memhash(BDIGITS(x), sizeof(BDIGIT)*RBIGNUM_LEN(x)) ^ RBIGNUM_SIGN(x);
-    return INT2FIX(hash);
+VALUE
+rb_big_size_m(VALUE big)
+{
+    return SIZET2NUM(rb_big_size(big));
 }
 
-/*
- * MISSING: documentation
- */
+VALUE
+rb_big_bit_length(VALUE big)
+{
+    int nlz_bits;
+    size_t numbytes;
 
-static VALUE
-rb_big_coerce(VALUE x, VALUE y)
+    static const BDIGIT char_bit[1] = { CHAR_BIT };
+    BDIGIT numbytes_bary[bdigit_roomof(sizeof(size_t))];
+    BDIGIT nlz_bary[1];
+    BDIGIT result_bary[bdigit_roomof(sizeof(size_t)+1)];
+
+    numbytes = rb_absint_size(big, &nlz_bits);
+
+    if (numbytes == 0)
+        return LONG2FIX(0);
+
+    if (BIGNUM_NEGATIVE_P(big) && rb_absint_singlebit_p(big)) {
+        if (nlz_bits != CHAR_BIT-1) {
+            nlz_bits++;
+        }
+        else {
+            nlz_bits = 0;
+            numbytes--;
+        }
+    }
+
+    if (numbytes <= SIZE_MAX / CHAR_BIT) {
+        return SIZET2NUM(numbytes * CHAR_BIT - nlz_bits);
+    }
+
+    nlz_bary[0] = nlz_bits;
+
+    bary_unpack(BARY_ARGS(numbytes_bary), &numbytes, 1, sizeof(numbytes), 0,
+            INTEGER_PACK_NATIVE_BYTE_ORDER);
+    BARY_SHORT_MUL(result_bary, numbytes_bary, char_bit);
+    BARY_SUB(result_bary, result_bary, nlz_bary);
+
+    return rb_integer_unpack(result_bary, numberof(result_bary), sizeof(BDIGIT), 0,
+            INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_NATIVE_BYTE_ORDER);
+}
+
+VALUE
+rb_big_odd_p(VALUE num)
 {
-    if (FIXNUM_P(y)) {
-	return rb_assoc_new(rb_int2big(FIX2LONG(y)), x);
+    if (BIGNUM_LEN(num) != 0 && BDIGITS(num)[0] & 1) {
+	return Qtrue;
     }
-    else if (TYPE(y) == T_BIGNUM) {
-       return rb_assoc_new(y, x);
+    return Qfalse;
+}
+
+VALUE
+rb_big_even_p(VALUE num)
+{
+    if (BIGNUM_LEN(num) != 0 && BDIGITS(num)[0] & 1) {
+	return Qfalse;
+    }
+    return Qtrue;
+}
+
+unsigned long rb_ulong_isqrt(unsigned long);
+#if SIZEOF_BDIGIT*2 > SIZEOF_LONG
+BDIGIT rb_bdigit_dbl_isqrt(BDIGIT_DBL);
+# ifdef ULL_TO_DOUBLE
+#   define BDIGIT_DBL_TO_DOUBLE(n) ULL_TO_DOUBLE(n)
+# endif
+#else
+# define rb_bdigit_dbl_isqrt(x) (BDIGIT)rb_ulong_isqrt(x)
+#endif
+#ifndef BDIGIT_DBL_TO_DOUBLE
+# define BDIGIT_DBL_TO_DOUBLE(n) (double)(n)
+#endif
+
+static BDIGIT *
+estimate_initial_sqrt(VALUE *xp, const size_t xn, const BDIGIT *nds, size_t len)
+{
+    enum {dbl_per_bdig = roomof(DBL_MANT_DIG,BITSPERDIG)};
+    const int zbits = nlz(nds[len-1]);
+    VALUE x = *xp = bignew_1(0, xn, 1); /* division may release the GVL */
+    BDIGIT *xds = BDIGITS(x);
+    BDIGIT_DBL d = bary2bdigitdbl(nds+len-dbl_per_bdig, dbl_per_bdig);
+    BDIGIT lowbits = 1;
+    int rshift = (int)((BITSPERDIG*2-zbits+(len&BITSPERDIG&1) - DBL_MANT_DIG + 1) & ~1);
+    double f;
+
+    if (rshift > 0) {
+	lowbits = (BDIGIT)d & ~(~(BDIGIT)1U << rshift);
+	d >>= rshift;
+    }
+    else if (rshift < 0) {
+	d <<= -rshift;
+	d |= nds[len-dbl_per_bdig-1] >> (BITSPERDIG+rshift);
+    }
+    f = sqrt(BDIGIT_DBL_TO_DOUBLE(d));
+    d = (BDIGIT_DBL)ceil(f);
+    if (BDIGIT_DBL_TO_DOUBLE(d) == f) {
+	if (lowbits || (lowbits = !bary_zero_p(nds, len-dbl_per_bdig)))
+	    ++d;
     }
     else {
-	rb_raise(rb_eTypeError, "can't coerce %s to Bignum",
-		 rb_obj_classname(y));
+	lowbits = 1;
+    }
+    rshift /= 2;
+    rshift += (2-(len&1))*BITSPERDIG/2;
+    if (rshift >= 0) {
+        if (nlz((BDIGIT)d) + rshift >= BITSPERDIG) {
+            /* (d << rshift) does cause overflow.
+             * example: Integer.sqrt(0xffff_ffff_ffff_ffff ** 2)
+             */
+            d = ~(BDIGIT_DBL)0;
+        }
+        else {
+            d <<= rshift;
+        }
+    }
+    BDIGITS_ZERO(xds, xn-2);
+    bdigitdbl2bary(&xds[xn-2], 2, d);
+
+    if (!lowbits) return NULL; /* special case, exact result */
+    return xds;
+}
+
+VALUE
+rb_big_isqrt(VALUE n)
+{
+    BDIGIT *nds = BDIGITS(n);
+    size_t len = BIGNUM_LEN(n);
+    size_t xn = (len+1) / 2;
+    VALUE x;
+    BDIGIT *xds;
+
+    if (len <= 2) {
+	BDIGIT sq = rb_bdigit_dbl_isqrt(bary2bdigitdbl(nds, len));
+#if SIZEOF_BDIGIT > SIZEOF_LONG
+	return ULL2NUM(sq);
+#else
+	return ULONG2NUM(sq);
+#endif
     }
-    /* not reached */
-    return Qnil;
+    else if ((xds = estimate_initial_sqrt(&x, xn, nds, len)) != 0) {
+	size_t tn = xn + BIGDIVREM_EXTRA_WORDS;
+	VALUE t = bignew_1(0, tn, 1);
+	BDIGIT *tds = BDIGITS(t);
+	tn = BIGNUM_LEN(t);
+
+	/* t = n/x */
+	while (bary_divmod_branch(tds, tn, NULL, 0, nds, len, xds, xn),
+	       bary_cmp(tds, tn, xds, xn) < 0) {
+	    int carry;
+	    BARY_TRUNC(tds, tn);
+	    /* x = (x+t)/2 */
+	    carry = bary_add(xds, xn, xds, xn, tds, tn);
+	    bary_small_rshift(xds, xds, xn, 1, carry);
+	    tn = BIGNUM_LEN(t);
+	}
+	rb_big_realloc(t, 0);
+	rb_gc_force_recycle(t);
+    }
+    RBASIC_SET_CLASS_RAW(x, rb_cInteger);
+    return x;
 }
 
-/*
- *  call-seq:
- *     big.abs -> aBignum
- *
- *  Returns the absolute value of <i>big</i>.
- *
- *     -1234567890987654321.abs   #=> 1234567890987654321
- */
+#ifdef USE_GMP
+static void
+bary_powm_gmp(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn, const BDIGIT *mds, size_t mn)
+{
+    mpz_t z, x, y, m;
+    size_t count;
+    mpz_init(x);
+    mpz_init(y);
+    mpz_init(m);
+    mpz_init(z);
+    bdigits_to_mpz(x, xds, xn);
+    bdigits_to_mpz(y, yds, yn);
+    bdigits_to_mpz(m, mds, mn);
+    mpz_powm(z, x, y, m);
+    bdigits_from_mpz(z, zds, &count);
+    BDIGITS_ZERO(zds+count, zn-count);
+    mpz_clear(x);
+    mpz_clear(y);
+    mpz_clear(m);
+    mpz_clear(z);
+}
+#endif
 
 static VALUE
-rb_big_abs(VALUE x)
+int_pow_tmp3(VALUE x, VALUE y, VALUE m, int nega_flg)
 {
-    if (!RBIGNUM_SIGN(x)) {
-	x = rb_big_clone(x);
-	RBIGNUM_SET_SIGN(x, 1);
+#ifdef USE_GMP
+    VALUE z;
+    size_t xn, yn, mn, zn;
+
+    if (FIXNUM_P(x)) {
+       x = rb_int2big(FIX2LONG(x));
     }
-    return x;
+    if (FIXNUM_P(y)) {
+       y = rb_int2big(FIX2LONG(y));
+    }
+    assert(RB_BIGNUM_TYPE_P(m));
+    xn = BIGNUM_LEN(x);
+    yn = BIGNUM_LEN(y);
+    mn = BIGNUM_LEN(m);
+    zn = mn;
+    z = bignew(zn, 1);
+    bary_powm_gmp(BDIGITS(z), zn, BDIGITS(x), xn, BDIGITS(y), yn, BDIGITS(m), mn);
+    if (nega_flg & BIGNUM_POSITIVE_P(z)) {
+        z = rb_big_minus(z, m);
+    }
+    RB_GC_GUARD(x);
+    RB_GC_GUARD(y);
+    RB_GC_GUARD(m);
+    return rb_big_norm(z);
+#else
+    VALUE tmp = LONG2FIX(1L);
+    long yy;
+
+    for (/*NOP*/; ! FIXNUM_P(y); y = rb_big_rshift(y, LONG2FIX(1L))) {
+        if (RTEST(rb_int_odd_p(y))) {
+            tmp = rb_int_mul(tmp, x);
+            tmp = rb_int_modulo(tmp, m);
+        }
+        x = rb_int_mul(x, x);
+        x = rb_int_modulo(x, m);
+    }
+    for (yy = FIX2LONG(y); yy; yy >>= 1L) {
+        if (yy & 1L) {
+            tmp = rb_int_mul(tmp, x);
+            tmp = rb_int_modulo(tmp, m);
+        }
+        x = rb_int_mul(x, x);
+        x = rb_int_modulo(x, m);
+    }
+
+    if (nega_flg && rb_int_positive_p(tmp)) {
+        tmp = rb_int_minus(tmp, m);
+    }
+    return tmp;
+#endif
 }
 
 /*
- *  call-seq:
- *     big.size -> integer
- *
- *  Returns the number of bytes in the machine representation of
- *  <i>big</i>.
- *
- *     (256**10 - 1).size   #=> 12
- *     (256**20 - 1).size   #=> 20
- *     (256**40 - 1).size   #=> 40
+ * Integer#pow
  */
 
 static VALUE
-rb_big_size(VALUE big)
+int_pow_tmp1(VALUE x, VALUE y, long mm, int nega_flg)
 {
-    return LONG2FIX(RBIGNUM_LEN(big)*SIZEOF_BDIGITS);
-}
+    long xx = FIX2LONG(x);
+    long tmp = 1L;
+    long yy;
 
-/*
- *  call-seq:
- *     big.odd? -> true or false
- *
- *  Returns <code>true</code> if <i>big</i> is an odd number.
- */
+    for (/*NOP*/; ! FIXNUM_P(y); y = rb_big_rshift(y, LONG2FIX(1L))) {
+        if (RTEST(rb_int_odd_p(y))) {
+            tmp = (tmp * xx) % mm;
+        }
+        xx = (xx * xx) % mm;
+    }
+    for (yy = FIX2LONG(y); yy; yy >>= 1L) {
+        if (yy & 1L) {
+            tmp = (tmp * xx) % mm;
+        }
+        xx = (xx * xx) % mm;
+    }
+
+    if (nega_flg && tmp) {
+        tmp -= mm;
+    }
+    return LONG2FIX(tmp);
+}
 
 static VALUE
-rb_big_odd_p(VALUE num)
+int_pow_tmp2(VALUE x, VALUE y, long mm, int nega_flg)
 {
-    if (BDIGITS(num)[0] & 1) {
-	return Qtrue;
+    long tmp = 1L;
+    long yy;
+#ifdef DLONG
+    const DLONG m = mm;
+    long tmp2 = tmp;
+    long xx = FIX2LONG(x);
+# define MUL_MODULO(a, b, c) (long)(((DLONG)(a) * (DLONG)(b)) % (c))
+#else
+    const VALUE m = LONG2FIX(mm);
+    VALUE tmp2 = LONG2FIX(tmp);
+    VALUE xx = x;
+# define MUL_MODULO(a, b, c) rb_int_modulo(rb_fix_mul_fix((a), (b)), (c))
+#endif
+
+    for (/*NOP*/; ! FIXNUM_P(y); y = rb_big_rshift(y, LONG2FIX(1L))) {
+        if (RTEST(rb_int_odd_p(y))) {
+            tmp2 = MUL_MODULO(tmp2, xx, m);
+        }
+        xx = MUL_MODULO(xx, xx, m);
     }
-    return Qfalse;
+    for (yy = FIX2LONG(y); yy; yy >>= 1L) {
+        if (yy & 1L) {
+            tmp2 = MUL_MODULO(tmp2, xx, m);
+        }
+        xx = MUL_MODULO(xx, xx, m);
+    }
+
+#ifdef DLONG
+    tmp = tmp2;
+#else
+    tmp = FIX2LONG(tmp2);
+#endif
+    if (nega_flg && tmp) {
+        tmp -= mm;
+    }
+    return LONG2FIX(tmp);
 }
 
 /*
- *  call-seq:
- *     big.even? -> true or false
+ * Document-method: Integer#pow
+ * call-seq:
+ *    integer.pow(numeric)           ->  numeric
+ *    integer.pow(integer, integer)  ->  integer
+ *
+ * Returns (modular) exponentiation as:
  *
- *  Returns <code>true</code> if <i>big</i> is an even number.
+ *   a.pow(b)     #=> same as a**b
+ *   a.pow(b, m)  #=> same as (a**b) % m, but avoids huge temporary values
  */
-
-static VALUE
-rb_big_even_p(VALUE num)
+VALUE
+rb_int_powm(int const argc, VALUE * const argv, VALUE const num)
 {
-    if (BDIGITS(num)[0] & 1) {
-	return Qfalse;
+    rb_check_arity(argc, 1, 2);
+
+    if (argc == 1) {
+        return rb_int_pow(num, argv[0]);
     }
-    return Qtrue;
+    else {
+        VALUE const a = num;
+        VALUE const b = argv[0];
+        VALUE m = argv[1];
+        int nega_flg = 0;
+        if ( ! RB_INTEGER_TYPE_P(b)) {
+            rb_raise(rb_eTypeError, "Integer#pow() 2nd argument not allowed unless a 1st argument is integer");
+        }
+        if (rb_int_negative_p(b)) {
+            rb_raise(rb_eRangeError, "Integer#pow() 1st argument cannot be negative when 2nd argument specified");
+        }
+        if (!RB_INTEGER_TYPE_P(m)) {
+            rb_raise(rb_eTypeError, "Integer#pow() 2nd argument not allowed unless all arguments are integers");
+        }
+
+        if (rb_int_negative_p(m)) {
+            m = rb_int_uminus(m);
+            nega_flg = 1;
+        }
+
+        if (FIXNUM_P(m)) {
+            long const half_val = (long)HALF_LONG_MSB;
+            long const mm = FIX2LONG(m);
+            if (!mm) rb_num_zerodiv();
+            if (mm == 1) return INT2FIX(0);
+            if (mm <= half_val) {
+                return int_pow_tmp1(rb_int_modulo(a, m), b, mm, nega_flg);
+            }
+            else {
+                return int_pow_tmp2(rb_int_modulo(a, m), b, mm, nega_flg);
+            }
+        }
+        else {
+            if (rb_bigzero_p(m)) rb_num_zerodiv();
+	    if (bignorm(m) == INT2FIX(1)) return INT2FIX(0);
+            return int_pow_tmp3(rb_int_modulo(a, m), b, m, nega_flg);
+        }
+    }
+    UNREACHABLE_RETURN(Qnil);
 }
 
 /*
@@ -2672,40 +7174,16 @@ rb_big_even_p(VALUE num)
 void
 Init_Bignum(void)
 {
-    rb_cBignum = rb_define_class("Bignum", rb_cInteger);
-
-    rb_define_method(rb_cBignum, "to_s", rb_big_to_s, -1);
-    rb_define_method(rb_cBignum, "coerce", rb_big_coerce, 1);
-    rb_define_method(rb_cBignum, "-@", rb_big_uminus, 0);
-    rb_define_method(rb_cBignum, "+", rb_big_plus, 1);
-    rb_define_method(rb_cBignum, "-", rb_big_minus, 1);
-    rb_define_method(rb_cBignum, "*", rb_big_mul, 1);
-    rb_define_method(rb_cBignum, "/", rb_big_div, 1);
-    rb_define_method(rb_cBignum, "%", rb_big_modulo, 1);
-    rb_define_method(rb_cBignum, "div", rb_big_idiv, 1);
-    rb_define_method(rb_cBignum, "divmod", rb_big_divmod, 1);
-    rb_define_method(rb_cBignum, "modulo", rb_big_modulo, 1);
-    rb_define_method(rb_cBignum, "remainder", rb_big_remainder, 1);
-    rb_define_method(rb_cBignum, "fdiv", rb_big_fdiv, 1);
-    rb_define_method(rb_cBignum, "**", rb_big_pow, 1);
-    rb_define_method(rb_cBignum, "&", rb_big_and, 1);
-    rb_define_method(rb_cBignum, "|", rb_big_or, 1);
-    rb_define_method(rb_cBignum, "^", rb_big_xor, 1);
-    rb_define_method(rb_cBignum, "~", rb_big_neg, 0);
-    rb_define_method(rb_cBignum, "<<", rb_big_lshift, 1);
-    rb_define_method(rb_cBignum, ">>", rb_big_rshift, 1);
-    rb_define_method(rb_cBignum, "[]", rb_big_aref, 1);
-
-    rb_define_method(rb_cBignum, "<=>", rb_big_cmp, 1);
-    rb_define_method(rb_cBignum, "==", rb_big_eq, 1);
-    rb_define_method(rb_cBignum, "eql?", rb_big_eql, 1);
-    rb_define_method(rb_cBignum, "hash", rb_big_hash, 0);
-    rb_define_method(rb_cBignum, "to_f", rb_big_to_f, 0);
-    rb_define_method(rb_cBignum, "abs", rb_big_abs, 0);
-    rb_define_method(rb_cBignum, "magnitude", rb_big_abs, 0);
-    rb_define_method(rb_cBignum, "size", rb_big_size, 0);
-    rb_define_method(rb_cBignum, "odd?", rb_big_odd_p, 0);
-    rb_define_method(rb_cBignum, "even?", rb_big_even_p, 0);
+    /* An obsolete class, use Integer */
+    rb_define_const(rb_cObject, "Bignum", rb_cInteger);
+    rb_deprecate_constant(rb_cObject, "Bignum");
+
+    rb_define_method(rb_cInteger, "coerce", rb_int_coerce, 1);
+
+#ifdef USE_GMP
+    /* The version of loaded GMP. */
+    rb_define_const(rb_cInteger, "GMP_VERSION", rb_sprintf("GMP %s", gmp_version));
+#endif
 
     power_cache_init();
 }
diff --git a/bin/bundle b/bin/bundle
new file mode 100755
index 0000000000..1a0b06b005
--- /dev/null
+++ b/bin/bundle
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+#
+# This file was generated by RubyGems.
+#
+# The application 'bundler' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require 'rubygems'
+
+version = ">= 0.a"
+
+str = ARGV.first
+if str
+  str = str.b[/\A_(.*)_\z/, 1]
+  if str and Gem::Version.correct?(str)
+    version = str
+    ARGV.shift
+  end
+end
+
+if Gem.respond_to?(:activate_bin_path)
+load Gem.activate_bin_path('bundler', 'bundle', version)
+else
+gem "bundler", version
+load Gem.bin_path("bundler", "bundle", version)
+end
diff --git a/bin/bundler b/bin/bundler
new file mode 100755
index 0000000000..e15eb39ed7
--- /dev/null
+++ b/bin/bundler
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+#
+# This file was generated by RubyGems.
+#
+# The application 'bundler' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require 'rubygems'
+
+version = ">= 0.a"
+
+str = ARGV.first
+if str
+  str = str.b[/\A_(.*)_\z/, 1]
+  if str and Gem::Version.correct?(str)
+    version = str
+    ARGV.shift
+  end
+end
+
+if Gem.respond_to?(:activate_bin_path)
+load Gem.activate_bin_path('bundler', 'bundler', version)
+else
+gem "bundler", version
+load Gem.bin_path("bundler", "bundler", version)
+end
diff --git a/bin/erb b/bin/erb
index 6db3d0b6ed..89d74fc525 100755
--- a/bin/erb
+++ b/bin/erb
@@ -1,155 +1,27 @@
 #!/usr/bin/env ruby
-# Tiny eRuby --- ERB2
-# Copyright (c) 1999-2000,2002 Masatoshi SEKI 
-# You can redistribute it and/or modify it under the same terms as Ruby.
+#
+# This file was generated by RubyGems.
+#
+# The application 'erb' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
 
-require 'erb'
+require 'rubygems'
 
-class ERB
-  module Main
-    def ARGV.switch
-      return nil if self.empty?
-      arg = self.shift
-      return nil if arg == '--'
-      if arg =~ /^-(.)(.*)/
-        if $1 == '-'
-          arg, @maybe_arg = arg.split(/=/, 2)
-          return arg 
-        end
-        raise 'unknown switch "-"' if $2[0] == ?- and $1 != 'T'
-        if $2.size > 0
-          self.unshift "-#{$2}" 
-          @maybe_arg = $2
-        else
-          @maybe_arg = nil
-        end
-        "-#{$1}"
-      else
-        self.unshift arg
-        nil
-      end
-    end
-    
-    def ARGV.req_arg
-      (@maybe_arg || self.shift || raise('missing argument')).tap {
-        @maybe_arg = nil
-      }
-    end
+version = ">= 0.a"
 
-    def trim_mode_opt(trim_mode, disable_percent)
-      return trim_mode if disable_percent
-      case trim_mode
-      when 0
-        return '%'
-      when 1
-        return '%>'
-      when 2
-        return '%<>'
-      when '-'
-        return '%-'
-      end
-    end
-    module_function :trim_mode_opt
-
-    def run(factory=ERB)
-      trim_mode = 0
-      disable_percent = false
-      begin
-        while switch = ARGV.switch
-          case switch
-          when '-x'                        # ruby source
-            output = true
-          when '-n'                        # line number
-            number = true
-          when '-v'                        # verbose
-            $VERBOSE = true
-          when '--version'                 # version
-            STDERR.puts factory.version
-            exit
-          when '-d', '--debug'             # debug
-            $DEBUG = true
-          when '-r'                        # require
-            require ARGV.req_arg
-          when '-S'                        # security level
-            arg = ARGV.req_arg
-            raise "invalid safe_level #{arg.dump}" unless arg =~ /^[0-4]$/
-            safe_level = arg.to_i
-          when '-T'                        # trim mode
-            arg = ARGV.req_arg
-            if arg == '-'
-              trim_mode = arg 
-              next
-            end
-            raise "invalid trim mode #{arg.dump}" unless arg =~ /^[0-2]$/
-            trim_mode = arg.to_i
-          when '-E', '--encoding'
-            arg = ARGV.req_arg
-            set_encoding(*arg.split(/:/, 2))
-          when '-U'
-            set_encoding(Encoding::UTF_8, Encoding::UTF_8)
-          when '-P'
-            disable_percent = true
-          when '--help'
-            raise "print this help"
-          else
-            raise "unknown switch #{switch.dump}"
-          end
-        end
-      rescue                               # usage
-        STDERR.puts $!.to_s
-        STDERR.puts File.basename($0) + 
-          " [switches] [inputfile]"
-        STDERR.puts <<EOU
-  -x               print ruby script
-  -n               print ruby script with line number
-  -v               enable verbose mode
-  -d               set $DEBUG to true
-  -r library       load a library
-  -S safe_level    set $SAFE (0..4)
-  -E ex[:in]       set default external/internal encodings
-  -U               set default encoding to UTF-8.
-  -T trim_mode     specify trim_mode (0..2, -)
-  -P               ignore lines which start with "%"
-EOU
-        exit 1
-      end
-
-      $<.set_encoding(Encoding::ASCII_8BIT, nil)
-      src = $<.read
-      filename = $FILENAME
-      exit 2 unless src
-      trim = trim_mode_opt(trim_mode, disable_percent)
-      erb = factory.new(src.untaint, safe_level, trim)
-      erb.filename = filename
-      if output
-        if number
-          erb.src.each_line.with_index do |line, l|
-            puts "%3d %s"%[l+1, line]
-          end
-        else
-          puts erb.src
-        end
-      else
-        erb.run(TOPLEVEL_BINDING.taint)
-      end
-    end
-    module_function :run
-
-    def set_encoding(extern, intern = nil)
-      verbose, $VERBOSE = $VERBOSE, nil
-      Encoding.default_external = extern unless extern.nil? || extern.empty?
-      Encoding.default_internal = intern unless intern.nil? || intern.empty?
-      [$stdin, $stdout, $stderr].each do |io|
-        io.set_encoding(extern, intern)
-      end
-    ensure
-      $VERBOSE = verbose
-    end
-    module_function :set_encoding
-    class << self; private :set_encoding; end
+str = ARGV.first
+if str
+  str = str.b[/\A_(.*)_\z/, 1]
+  if str and Gem::Version.correct?(str)
+    version = str
+    ARGV.shift
   end
 end
 
-if __FILE__ == $0
-  ERB::Main.run
+if Gem.respond_to?(:activate_bin_path)
+load Gem.activate_bin_path('erb', 'erb', version)
+else
+gem "erb", version
+load Gem.bin_path("erb", "erb", version)
 end
diff --git a/bin/gem b/bin/gem
index b5b2b63809..a4ec754abb 100755
--- a/bin/gem
+++ b/bin/gem
@@ -9,16 +9,13 @@ require 'rubygems'
 require 'rubygems/gem_runner'
 require 'rubygems/exceptions'
 
-required_version = Gem::Requirement.new "> 1.8.3"
+required_version = Gem::Requirement.new ">= 1.8.7"
 
 unless required_version.satisfied_by? Gem.ruby_version then
-  abort "Expected Ruby Version #{required_version}, was #{Gem.ruby_version}"
+  abort "Expected Ruby Version #{required_version}, is #{Gem.ruby_version}"
 end
 
-# We need to preserve the original ARGV to use for passing gem options
-# to source gems.  If there is a -- in the line, strip all options after
-# it...its for the source building process.
-args = !ARGV.include?("--") ? ARGV.clone : ARGV[0...ARGV.index("--")]
+args = ARGV.clone
 
 begin
   Gem::GemRunner.new.run args
diff --git a/bin/irb b/bin/irb
index b31b43eb7f..ae6d358c9d 100644..100755
--- a/bin/irb
+++ b/bin/irb
@@ -1,20 +1,27 @@
 #!/usr/bin/env ruby
 #
-#   irb.rb - interactive ruby
-#   	$Release Version: 0.9.5 $
-#   	$Revision$
-#   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
+# This file was generated by RubyGems.
+#
+# The application 'irb' is installed as part of a gem, and
+# this file is here to facilitate running it.
 #
 
-require "irb"
+require 'rubygems'
 
-if __FILE__ == $0
-  IRB.start(__FILE__)
-else
-  # check -e option
-  if /^-e$/ =~ $0
-    IRB.start(__FILE__)
-  else
-    IRB.setup(__FILE__)
+version = ">= 0.a"
+
+str = ARGV.first
+if str
+  str = str.b[/\A_(.*)_\z/, 1]
+  if str and Gem::Version.correct?(str)
+    version = str
+    ARGV.shift
   end
 end
+
+if Gem.respond_to?(:activate_bin_path)
+load Gem.activate_bin_path('irb', 'irb', version)
+else
+gem "irb", version
+load Gem.bin_path("irb", "irb", version)
+end
diff --git a/bin/racc b/bin/racc
new file mode 100755
index 0000000000..3ddac532b4
--- /dev/null
+++ b/bin/racc
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+#
+# This file was generated by RubyGems.
+#
+# The application 'racc' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require 'rubygems'
+
+version = ">= 0.a"
+
+if ARGV.first
+  str = ARGV.first
+  str = str.dup.force_encoding("BINARY") if str.respond_to? :force_encoding
+  if str =~ /\A_(.*)_\z/ and Gem::Version.correct?($1) then
+    version = $1
+    ARGV.shift
+  end
+end
+
+if Gem.respond_to?(:activate_bin_path)
+load Gem.activate_bin_path('racc', 'racc', version)
+else
+gem "racc", version
+load Gem.bin_path("racc", "racc", version)
+end
diff --git a/bin/rake b/bin/rake
deleted file mode 100755
index c9e95da611..0000000000
--- a/bin/rake
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env ruby
-
-#--
-# Copyright (c) 2003, 2004, 2005, 2006, 2007  Jim Weirich
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to
-# deal in the Software without restriction, including without limitation the
-# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-# sell copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-# IN THE SOFTWARE.
-#++
-
-begin
-  require 'rake'
-rescue LoadError
-  require 'rubygems'
-  require 'rake'
-end
-Rake.application.run
diff --git a/bin/rdoc b/bin/rdoc
index e50285478d..8fa948cddb 100644..100755
--- a/bin/rdoc
+++ b/bin/rdoc
@@ -1,22 +1,27 @@
 #!/usr/bin/env ruby
 #
-#  RDoc: Documentation tool for source code
-#        (see lib/rdoc/rdoc.rb for more information)
+# This file was generated by RubyGems.
 #
-#  Copyright (c) 2003 Dave Thomas
-#  Released under the same terms as Ruby
+# The application 'rdoc' is installed as part of a gem, and
+# this file is here to facilitate running it.
 #
-#  $Revision$
 
-require 'rdoc/rdoc'
+require 'rubygems'
 
-begin
-  r = RDoc::RDoc.new
-  r.document ARGV
-rescue Interrupt
-  $stderr.puts
-  $stderr.puts "Interrupted"
-rescue RDoc::Error => e
-  $stderr.puts e.message
-  exit 1
+version = ">= 0.a"
+
+str = ARGV.first
+if str
+  str = str.b[/\A_(.*)_\z/, 1]
+  if str and Gem::Version.correct?(str)
+    version = str
+    ARGV.shift
+  end
+end
+
+if Gem.respond_to?(:activate_bin_path)
+load Gem.activate_bin_path('rdoc', 'rdoc', version)
+else
+gem "rdoc", version
+load Gem.bin_path("rdoc", "rdoc", version)
 end
diff --git a/bin/ri b/bin/ri
index 243557403c..0cc2f73bb6 100755
--- a/bin/ri
+++ b/bin/ri
@@ -1,5 +1,27 @@
 #!/usr/bin/env ruby
+#
+# This file was generated by RubyGems.
+#
+# The application 'rdoc' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
 
-require 'rdoc/ri/driver'
+require 'rubygems'
 
-RDoc::RI::Driver.run ARGV
+version = ">= 0.a"
+
+str = ARGV.first
+if str
+  str = str.b[/\A_(.*)_\z/, 1]
+  if str and Gem::Version.correct?(str)
+    version = str
+    ARGV.shift
+  end
+end
+
+if Gem.respond_to?(:activate_bin_path)
+load Gem.activate_bin_path('rdoc', 'ri', version)
+else
+gem "rdoc", version
+load Gem.bin_path("rdoc", "ri", version)
+end
diff --git a/bin/testrb b/bin/testrb
deleted file mode 100755
index e4eb9099b3..0000000000
--- a/bin/testrb
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env ruby
-require 'test/unit'
-Test::Unit.setup_argv {|files|
-  if files.empty?
-    puts "Usage: testrb [options] tests..."
-    exit 1
-  end
-  if files.size == 1
-    $0 = File.basename(files[0])
-  else
-    $0 = files.to_s
-  end
-  files
-}
diff --git a/blockinlining.c b/blockinlining.c
deleted file mode 100644
index 27b99ff6d4..0000000000
--- a/blockinlining.c
+++ /dev/null
@@ -1,464 +0,0 @@
-/**********************************************************************
-
-  blockinlining.c -
-
-  $Author$
-
-  Copyright (C) 2004-2007 Koichi Sasada
-
-**********************************************************************/
-
-#include "ruby/ruby.h"
-#include "vm_core.h"
-
-static VALUE
-iseq_special_block(rb_iseq_t *iseq, void *builder)
-{
-#if OPT_BLOCKINLINING
-    VALUE parent = Qfalse;
-    VALUE iseqval;
-
-    if (iseq->argc > 1 || iseq->arg_simple == 0) {
-	/* argument check */
-	return 0;
-    }
-
-    if (iseq->cached_special_block_builder) {
-	if (iseq->cached_special_block_builder == builder) {
-	    return iseq->cached_special_block;
-	}
-	else {
-	    return 0;
-	}
-    }
-    else {
-	iseq->cached_special_block_builder = (void *)1;
-    }
-    
-    if (iseq->parent_iseq) {
-	parent = iseq->parent_iseq->self;
-    }
-    iseqval = rb_iseq_new_with_bopt(iseq->node, iseq->name, iseq->filename,
-				      parent, iseq->type,
-				      GC_GUARDED_PTR(builder));
-    if (0) {
-	printf("%s\n", RSTRING_PTR(rb_iseq_disasm(iseqval)));
-    }
-    iseq->cached_special_block = iseqval;
-    iseq->cached_special_block_builder = builder;
-    return iseqval;
-#else
-    return 0;
-#endif
-}
-
-static NODE *
-new_block(NODE * head, NODE * tail)
-{
-    head = NEW_BLOCK(head);
-    tail = NEW_BLOCK(tail);
-    head->nd_next = tail;
-    return head;
-}
-
-static NODE *
-new_ary(NODE * head, NODE * tail)
-{
-    head = NEW_ARRAY(head);
-    head->nd_next = tail;
-    return head;
-}
-
-static NODE *
-new_assign(NODE * lnode, NODE * rhs)
-{
-    switch (nd_type(lnode)) {
-      case NODE_LASGN:{
-	  return NEW_NODE(NODE_LASGN, lnode->nd_vid, rhs, lnode->nd_cnt);
-	  /* NEW_LASGN(lnode->nd_vid, rhs); */
-      }
-      case NODE_GASGN:{
-	  return NEW_GASGN(lnode->nd_vid, rhs);
-      }
-      case NODE_DASGN:{
-	  return NEW_DASGN(lnode->nd_vid, rhs);
-      }
-      case NODE_ATTRASGN:{
-	  NODE *args = 0;
-	  if (lnode->nd_args) {
-	      args = NEW_ARRAY(lnode->nd_args->nd_head);
-	      args->nd_next = NEW_ARRAY(rhs);
-	      args->nd_alen = 2;
-	  }
-	  else {
-	      args = NEW_ARRAY(rhs);
-	  }
-
-	  return NEW_ATTRASGN(lnode->nd_recv,
-			      lnode->nd_mid,
-			      args);
-      }
-      default:
-	rb_bug("unimplemented (block inlining): %s", ruby_node_name(nd_type(lnode)));
-    }
-    return 0;
-}
-
-static NODE *
-build_Integer_times_node(rb_iseq_t *iseq, NODE * node, NODE * lnode,
-			 VALUE param_vars, VALUE local_vars)
-{
-    /* Special Block for Integer#times
-       {|e, _self|
-       _e = e
-       while(e < _self)
-       e = _e
-       redo_point:
-       BODY
-       next_point:
-       _e = _e.succ
-       end
-       }
-
-       {|e, _self|
-       while(e < _self)
-       BODY
-       next_point:
-       e = e.succ
-       end
-       }
-     */
-    ID _self;
-    CONST_ID(_self, "#_self");
-    if (iseq->argc == 0) {
-	ID e;
-	CONST_ID(e, "#e");
-	rb_ary_push(param_vars, ID2SYM(e));
-	rb_ary_push(param_vars, ID2SYM(_self));
-	iseq->argc += 2;
-
-	node =
-	    NEW_WHILE(NEW_CALL
-		      (NEW_DVAR(e), idLT, new_ary(NEW_DVAR(_self), 0)),
-		      new_block(NEW_OPTBLOCK(node),
-				NEW_DASGN(e,
-					  NEW_CALL(NEW_DVAR(e), idSucc, 0))),
-		      Qundef);
-    }
-    else {
-	ID _e;
-	ID e = SYM2ID(rb_ary_entry(param_vars, 0));
-	NODE *assign;
-
-	CONST_ID(_e, "#_e");
-	rb_ary_push(param_vars, ID2SYM(_self));
-	rb_ary_push(local_vars, ID2SYM(_e));
-	iseq->argc++;
-
-	if (nd_type(lnode) == NODE_DASGN_CURR) {
-	    assign = NEW_DASGN(e, NEW_DVAR(_e));
-	}
-	else {
-	    assign = new_assign(lnode, NEW_DVAR(_e));
-	}
-
-	node =
-	    new_block(NEW_DASGN(_e, NEW_DVAR(e)),
-		      NEW_WHILE(NEW_CALL
-				(NEW_DVAR(_e), idLT,
-				 new_ary(NEW_DVAR(_self), 0)),
-				new_block(assign,
-					  new_block(NEW_OPTBLOCK(node),
-						    NEW_DASGN(_e,
-							      NEW_CALL
-							      (NEW_DVAR(_e),
-							       idSucc, 0)))),
-				Qundef));
-    }
-    return node;
-}
-
-VALUE
-invoke_Integer_times_special_block(VALUE num)
-{
-    rb_thread_t *th = GET_THREAD();
-    rb_block_t *orig_block = GC_GUARDED_PTR_REF(th->cfp->lfp[0]);
-
-    if (orig_block && BUILTIN_TYPE(orig_block->iseq) != T_NODE) {
-	VALUE tsiseqval = iseq_special_block(orig_block->iseq,
-					     build_Integer_times_node);
-	rb_iseq_t *tsiseq;
-	VALUE argv[2], val;
-
-	if (tsiseqval) {
-	    rb_block_t block = *orig_block;
-	    GetISeqPtr(tsiseqval, tsiseq);
-	    block.iseq = tsiseq;
-	    th->cfp->lfp[0] = GC_GUARDED_PTR(&block);
-	    argv[0] = INT2FIX(0);
-	    argv[1] = num;
-	    val = rb_yield_values(2, argv);
-	    if (val == Qundef) {
-		return num;
-	    }
-	    else {
-		return val;
-	    }
-	}
-    }
-    return Qundef;
-}
-
-static NODE *
-build_Range_each_node(rb_iseq_t *iseq, NODE * node, NODE * lnode,
-		      VALUE param_vars, VALUE local_vars, ID mid)
-{
-    /* Special Block for Range#each
-       {|e, _last|
-       _e = e
-       while _e < _last
-       e = _e
-       next_point:
-       BODY
-       redo_point:
-       _e = _e.succ
-       end
-       }
-       {|e, _last|
-       while e < _last
-       BODY
-       redo_point:
-       e = e.succ
-       end
-       }
-     */
-    ID _last;
-    CONST_ID(_last, "#_last");
-    if (iseq->argc == 0) {
-	ID e;
-	CONST_ID(e, "#e");
-	rb_ary_push(param_vars, ID2SYM(e));
-	rb_ary_push(param_vars, ID2SYM(_last));
-	iseq->argc += 2;
-
-	node =
-	    NEW_WHILE(NEW_CALL(NEW_DVAR(e), mid, new_ary(NEW_DVAR(_last), 0)),
-		      new_block(NEW_OPTBLOCK(node),
-				NEW_DASGN(e,
-					  NEW_CALL(NEW_DVAR(e), idSucc, 0))),
-		      Qundef);
-    }
-    else {
-	ID _e;
-	ID e = SYM2ID(rb_ary_entry(param_vars, 0));
-	NODE *assign;
-
-	CONST_ID(_e, "#_e");
-	rb_ary_push(param_vars, ID2SYM(_last));
-	rb_ary_push(local_vars, ID2SYM(_e));
-	iseq->argc++;
-
-	if (nd_type(lnode) == NODE_DASGN_CURR) {
-	    assign = NEW_DASGN(e, NEW_DVAR(_e));
-	}
-	else {
-	    assign = new_assign(lnode, NEW_DVAR(_e));
-	}
-
-	node =
-	    new_block(NEW_DASGN(_e, NEW_DVAR(e)),
-		      NEW_WHILE(NEW_CALL
-				(NEW_DVAR(_e), mid,
-				 new_ary(NEW_DVAR(_last), 0)),
-				new_block(assign,
-					  new_block(NEW_OPTBLOCK(node),
-						    NEW_DASGN(_e,
-							      NEW_CALL
-							      (NEW_DVAR(_e),
-							       idSucc, 0)))),
-				Qundef));
-    }
-    return node;
-}
-
-static NODE *
-build_Range_each_node_LE(rb_iseq_t *iseq, NODE * node, NODE * lnode,
-			 VALUE param_vars, VALUE local_vars)
-{
-    return build_Range_each_node(iseq, node, lnode,
-				 param_vars, local_vars, idLE);
-}
-
-static NODE *
-build_Range_each_node_LT(rb_iseq_t *iseq, NODE * node, NODE * lnode,
-			 VALUE param_vars, VALUE local_vars)
-{
-    return build_Range_each_node(iseq, node, lnode,
-				 param_vars, local_vars, idLT);
-}
-
-VALUE
-invoke_Range_each_special_block(VALUE range,
-				VALUE beg, VALUE end, int excl)
-{
-    rb_thread_t *th = GET_THREAD();
-    rb_block_t *orig_block = GC_GUARDED_PTR_REF(th->cfp->lfp[0]);
-
-    if (BUILTIN_TYPE(orig_block->iseq) != T_NODE) {
-	void *builder =
-	    excl ? build_Range_each_node_LT : build_Range_each_node_LE;
-	VALUE tsiseqval = iseq_special_block(orig_block->iseq, builder);
-	rb_iseq_t *tsiseq;
-	VALUE argv[2];
-
-	if (tsiseqval) {
-	    VALUE val;
-	    rb_block_t block = *orig_block;
-	    GetISeqPtr(tsiseqval, tsiseq);
-	    block.iseq = tsiseq;
-	    th->cfp->lfp[0] = GC_GUARDED_PTR(&block);
-	    argv[0] = beg;
-	    argv[1] = end;
-	    val = rb_yield_values(2, argv);
-	    if (val == Qundef) {
-		return range;
-	    }
-	    else {
-		return val;
-	    }
-	}
-    }
-    return Qundef;
-}
-
-
-static NODE *
-build_Array_each_node(rb_iseq_t *iseq, NODE * node, NODE * lnode,
-		      VALUE param_vars, VALUE local_vars)
-{
-    /* Special block for Array#each
-       ary.each{|e|
-       BODY
-       }
-       =>
-       {|e, _self|
-       _i = 0
-       while _i < _self.length
-       e = _self[_i]
-       redo_point:
-       BODY
-       next_point:
-       _i = _i.succ
-       end
-       }
-
-       ary.each{
-       BODY
-       }
-       =>
-       {|_i, _self|
-       _i = 0
-       while _i < _self.length
-       redo_point:
-       BODY
-       next_point:
-       _i = _i.succ
-       end
-       }
-     */
-
-    ID _self, _i;
-
-    CONST_ID(_self, "#_self");
-    CONST_ID(_i, "#_i");
-    if (iseq->argc == 0) {
-	ID _e;
-	CONST_ID(_e, "#_e");
-	rb_ary_push(param_vars, ID2SYM(_e));
-	rb_ary_push(param_vars, ID2SYM(_self));
-	iseq->argc += 2;
-	rb_ary_push(local_vars, ID2SYM(_i));
-
-	node =
-	    new_block(NEW_DASGN(_i, NEW_LIT(INT2FIX(0))),
-		      NEW_WHILE(NEW_CALL(NEW_DVAR(_i), idLT,
-					 new_ary(NEW_CALL
-						 (NEW_DVAR(_self), idLength,
-						  0), 0)),
-				new_block(NEW_OPTBLOCK(node),
-					  NEW_DASGN(_i,
-						    NEW_CALL(NEW_DVAR(_i),
-							     idSucc, 0))),
-				Qundef));
-    }
-    else {
-	ID e = SYM2ID(rb_ary_entry(param_vars, 0));
-	NODE *assign;
-
-	rb_ary_push(param_vars, ID2SYM(_self));
-	iseq->argc++;
-	rb_ary_push(local_vars, ID2SYM(_i));
-
-	if (nd_type(lnode) == NODE_DASGN_CURR) {
-	    assign = NEW_DASGN(e,
-			       NEW_CALL(NEW_DVAR(_self), idAREF,
-					new_ary(NEW_DVAR(_i), 0)));
-	}
-	else {
-	    assign = new_assign(lnode,
-				NEW_CALL(NEW_DVAR(_self), idAREF,
-					 new_ary(NEW_DVAR(_i), 0)));
-	}
-
-	node =
-	    new_block(NEW_DASGN(_i, NEW_LIT(INT2FIX(0))),
-		      NEW_WHILE(NEW_CALL(NEW_DVAR(_i), idLT,
-					 new_ary(NEW_CALL
-						 (NEW_DVAR(_self), idLength,
-						  0), 0)), new_block(assign,
-								     new_block
-								     (NEW_OPTBLOCK
-								      (node),
-								      NEW_DASGN
-								      (_i,
-								       NEW_CALL
-								       (NEW_DVAR
-									(_i),
-									idSucc,
-									0)))),
-				Qundef));
-    }
-    return node;
-}
-
-VALUE
-invoke_Array_each_special_block(VALUE ary)
-{
-    rb_thread_t *th = GET_THREAD();
-    rb_block_t *orig_block = GC_GUARDED_PTR_REF(th->cfp->lfp[0]);
-
-    if (BUILTIN_TYPE(orig_block->iseq) != T_NODE) {
-	VALUE tsiseqval = iseq_special_block(orig_block->iseq,
-					     build_Array_each_node);
-	rb_iseq_t *tsiseq;
-	VALUE argv[2];
-
-	if (tsiseqval) {
-	    VALUE val;
-	    rb_block_t block = *orig_block;
-	    GetISeqPtr(tsiseqval, tsiseq);
-	    block.iseq = tsiseq;
-	    th->cfp->lfp[0] = GC_GUARDED_PTR(&block);
-	    argv[0] = 0;
-	    argv[1] = ary;
-	    val = rb_yield_values(2, argv);
-	    if (val == Qundef) {
-		return ary;
-	    }
-	    else {
-		return val;
-	    }
-	}
-    }
-    return Qundef;
-}
diff --git a/bootstraptest/pending.rb b/bootstraptest/pending.rb
index 744c0adac1..2c4b85a419 100644
--- a/bootstraptest/pending.rb
+++ b/bootstraptest/pending.rb
@@ -1,19 +1,3 @@
-assert_equal 'A', %q{
-  class A
-    @@a = 'A'
-    def a=(x)
-      @@a = x
-    end
-    def a
-      @@a
-    end
-  end
-
-  B = A.dup
-  B.new.a = 'B'
-  A.new.a
-}, '[ruby-core:17019]'
-
 assert_equal 'ok', %q{
   def m
     lambda{
@@ -31,9 +15,7 @@ assert_equal 'ok', %q{
   end
 }
 
-assert_normal_exit %q{
-  r = Range.allocate
-  def r.<=>(o) true end
-  r.instance_eval { initialize r, r }
-  r.inspect
+# This randomly fails on mswin.
+assert_equal %q{[]}, %q{
+  Thread.new{sleep}.backtrace
 }
diff --git a/bootstraptest/runner.rb b/bootstraptest/runner.rb
index 080e7b111e..2cd91ffd07 100644..100755
--- a/bootstraptest/runner.rb
+++ b/bootstraptest/runner.rb
@@ -1,9 +1,12 @@
+"exec" "${RUBY-ruby}" "-x" "$0" "$@" || true # -*- Ruby -*-
+#!./ruby
 # $Id$
 
 # NOTE:
 # Never use optparse in this file.
 # Never use test/unit in this file.
 # Never use Ruby extensions in this file.
+# Maintain Ruby 1.8 compatibility for now
 
 begin
   require 'fileutils'
@@ -15,13 +18,27 @@ end
 
 if !Dir.respond_to?(:mktmpdir)
   # copied from lib/tmpdir.rb
-  def Dir.mktmpdir(prefix="d", tmpdir=nil)
+  def Dir.mktmpdir(prefix_suffix=nil, tmpdir=nil)
+    case prefix_suffix
+    when nil
+      prefix = "d"
+      suffix = ""
+    when String
+      prefix = prefix_suffix
+      suffix = ""
+    when Array
+      prefix = prefix_suffix[0]
+      suffix = prefix_suffix[1]
+    else
+      raise ArgumentError, "unexpected prefix_suffix: #{prefix_suffix.inspect}"
+    end
     tmpdir ||= Dir.tmpdir
     t = Time.now.strftime("%Y%m%d")
     n = nil
     begin
       path = "#{tmpdir}/#{prefix}#{t}-#{$$}-#{rand(0x100000000).to_s(36)}"
       path << "-#{n}" if n
+      path << suffix
       Dir.mkdir(path, 0700)
     rescue Errno::EEXIST
       n ||= 0
@@ -44,6 +61,11 @@ end
 def main
   @ruby = File.expand_path('miniruby')
   @verbose = false
+  $VERBOSE = false
+  $stress = false
+  @color = nil
+  @tty = nil
+  @quiet = false
   dir = nil
   quiet = false
   tests = nil
@@ -56,7 +78,7 @@ def main
       @ruby.gsub!(/(\s+-r\s*)(\.\.?\/\S+)/){$1+File.expand_path($2)}
       true
     when /\A--sets=(.*)/
-      tests = Dir.glob("#{File.dirname($0)}/test_{#{$1}}*.rb")
+      tests = Dir.glob("#{File.dirname($0)}/test_{#{$1}}*.rb").sort
       puts tests.map {|path| File.basename(path) }.inspect
       true
     when /\A--dir=(.*)/
@@ -64,8 +86,17 @@ def main
       true
     when /\A(--stress|-s)/
       $stress = true
+    when /\A--color(?:=(?:always|(auto)|(never)|(.*)))?\z/
+      warn "unknown --color argument: #$3" if $3
+      @color = $1 ? nil : !$2
+      true
+    when /\A--tty(=(?:yes|(no)|(.*)))?\z/
+      warn "unknown --tty argument: #$3" if $3
+      @tty = !$1 || !$2
+      true
     when /\A(-q|--q(uiet))\z/
       quiet = true
+      @quiet = true
       true
     when /\A(-v|--v(erbose))\z/
       @verbose = true
@@ -74,13 +105,17 @@ def main
 Usage: #{File.basename($0, '.*')} --ruby=PATH [--sets=NAME,NAME,...]
         --sets=NAME,NAME,...        Name of test sets.
         --dir=DIRECTORY             Working directory.
-                                    default: /tmp/bootstraptest.tmpwd
+                                    default: /tmp/bootstraptestXXXXX.tmpwd
+        --color[=WHEN]              Colorize the output.  WHEN defaults to 'always'
+                                    or can be 'never' or 'auto'.
     -s, --stress                    stress test.
     -v, --verbose                   Output test name before exec.
     -q, --quiet                     Don\'t print header message.
     -h, --help                      Print this message and quit.
 End
       exit true
+    when /\A-j/
+      true
     else
       false
     end
@@ -90,13 +125,41 @@ End
     exit false
   end
   tests ||= ARGV
-  tests = Dir.glob("#{File.dirname($0)}/test_*.rb") if tests.empty?
+  tests = Dir.glob("#{File.dirname($0)}/test_*.rb").sort if tests.empty?
   pathes = tests.map {|path| File.expand_path(path) }
 
+  @progress = %w[- \\ | /]
+  @progress_bs = "\b" * @progress[0].size
+  @tty = $stderr.tty? if @tty.nil?
+  case @color
+  when nil
+    @color = @tty && /dumb/ !~ ENV["TERM"]
+  end
+  @tty &&= !@verbose
+  if @color
+    # dircolors-like style
+    colors = (colors = ENV['TEST_COLORS']) ? Hash[colors.scan(/(\w+)=([^:\n]*)/)] : {}
+    begin
+      File.read(File.join(__dir__, "../tool/colors")).scan(/(\w+)=([^:\n]*)/) do |n, c|
+        colors[n] ||= c
+      end
+    rescue
+    end
+    @passed = "\e[;#{colors["pass"] || "32"}m"
+    @failed = "\e[;#{colors["fail"] || "31"}m"
+    @reset = "\e[m"
+  else
+    @passed = @failed = @reset = ""
+  end
   unless quiet
     puts Time.now
-    patchlevel = defined?(RUBY_PATCHLEVEL) ? " patchlevel #{RUBY_PATCHLEVEL}" : ''
-    puts "Driver is ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}#{patchlevel}) [#{RUBY_PLATFORM}]"
+    if defined?(RUBY_DESCRIPTION)
+      puts "Driver is #{RUBY_DESCRIPTION}"
+    elsif defined?(RUBY_PATCHLEVEL)
+      puts "Driver is ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}#{RUBY_PLATFORM}) [#{RUBY_PLATFORM}]"
+    else
+      puts "Driver is ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}) [#{RUBY_PLATFORM}]"
+    end
     puts "Target is #{`#{@ruby} -v`.chomp}"
     puts
     $stdout.flush
@@ -107,47 +170,126 @@ End
   }
 end
 
+def erase(e = true)
+  if e and @columns > 0 and @tty and !@verbose
+    "\e[1K\r"
+  else
+    ""
+  end
+end
+
 def exec_test(pathes)
   @count = 0
   @error = 0
   @errbuf = []
   @location = nil
+  @columns = 0
+  @width = pathes.map {|path| File.basename(path).size}.max + 2
   pathes.each do |path|
-    $stderr.print "\n#{File.basename(path)} "
+    @basename = File.basename(path)
+    $stderr.printf("%s%-*s ", erase(@quiet), @width, @basename)
+    $stderr.flush
+    @columns = @width + 1
+    $stderr.puts if @verbose
+    count = @count
+    error = @error
     load File.expand_path(path)
+    if @tty
+      if @error == error
+        msg = "PASS #{@count-count}"
+        @columns += msg.size - 1
+        $stderr.print "#{@progress_bs}#{@passed}#{msg}#{@reset}"
+      else
+        msg = "FAIL #{@error-error}/#{@count-count}"
+        $stderr.print "#{@progress_bs}#{@failed}#{msg}#{@reset}"
+        @columns = 0
+      end
+    end
+    $stderr.puts unless @quiet and @tty and @error == error
+  end
+  $stderr.print(erase) if @quiet
+  @errbuf.each do |msg|
+    $stderr.puts msg
   end
-  $stderr.puts
   if @error == 0
-    $stderr.puts "PASS #{@count} tests"
+    if @count == 0
+      $stderr.puts "No tests, no problem"
+    else
+      $stderr.puts "#{@passed}PASS#{@reset} all #{@count} tests"
+    end
     exit true
   else
-    @errbuf.each do |msg|
-      $stderr.puts msg
-    end
-    $stderr.puts "FAIL #{@error}/#{@count} tests failed"
+    $stderr.puts "#{@failed}FAIL#{@reset} #{@error}/#{@count} tests failed"
     exit false
   end
 end
 
-def assert_check(testsrc, message = '', opt = '')
-  $stderr.puts "\##{@count} #{@location}" if @verbose
-  result = get_result_string(testsrc, opt)
-  check_coredump
-  faildesc = yield(result)
+def show_progress(message = '')
+  if @verbose
+    $stderr.print "\##{@count} #{@location} "
+  elsif @tty
+    $stderr.print "#{@progress_bs}#{@progress[@count % @progress.size]}"
+  end
+  t = Time.now if @verbose
+  faildesc, errout = with_stderr {yield}
+  t = Time.now - t if @verbose
   if !faildesc
-    $stderr.print '.'
+    if @tty
+      $stderr.print "#{@progress_bs}#{@progress[@count % @progress.size]}"
+    elsif @verbose
+      $stderr.printf(". %.3f\n", t)
+    else
+      $stderr.print '.'
+    end
   else
-    $stderr.print 'F'
+    $stderr.print "#{@failed}F"
+    $stderr.printf(" %.3f", t) if @verbose
+    $stderr.print @reset
+    $stderr.puts if @verbose
     error faildesc, message
+    unless errout.empty?
+      $stderr.print "#{@failed}stderr output is not empty#{@reset}\n", adjust_indent(errout)
+    end
+    if @tty and !@verbose
+      $stderr.printf("%-*s%s", @width, @basename, @progress[@count % @progress.size])
+    end
   end
+rescue Interrupt
+  $stderr.puts "\##{@count} #{@location}"
+  raise
 rescue Exception => err
   $stderr.print 'E'
+  $stderr.puts if @verbose
   error err.message, message
+ensure
+  begin
+    check_coredump
+  rescue CoreDumpError => err
+    $stderr.print 'E'
+    $stderr.puts if @verbose
+    error err.message, message
+  end
+end
+
+def show_limit(testsrc, opt = '', **argh)
+  result = get_result_string(testsrc, opt, **argh)
+  if @tty and @verbose
+    $stderr.puts ".{#@reset}\n#{erase}#{result}"
+  else
+    @errbuf.push result
+  end
+end
+
+def assert_check(testsrc, message = '', opt = '', **argh)
+  show_progress(message) {
+    result = get_result_string(testsrc, opt, **argh)
+    yield(result)
+  }
 end
 
-def assert_equal(expected, testsrc, message = '')
+def assert_equal(expected, testsrc, message = '', opt = '', **argh)
   newtest
-  assert_check(testsrc, message) {|result|
+  assert_check(testsrc, message, opt, **argh) {|result|
     if expected == result
       nil
     else
@@ -188,128 +330,163 @@ def assert_valid_syntax(testsrc, message = '')
   }
 end
 
-def assert_normal_exit(testsrc, message = '', ignore_signals = nil)
+def assert_normal_exit(testsrc, *rest, timeout: nil, **opt)
   newtest
-  $stderr.puts "\##{@count} #{@location}" if @verbose
-  faildesc = nil
-  filename = make_srcfile(testsrc)
-  old_stderr = $stderr.dup
-  begin
-    $stderr.reopen("assert_normal_exit_stderr.log", "w")
-    `#{@ruby} -W0 #{filename}`
-    status = $?
-  ensure
-    $stderr.reopen(old_stderr)
-    old_stderr.close
-  end
-  if status.signaled?
-    signo = status.termsig
-    signame = Signal.list.invert[signo]
-    unless ignore_signals and ignore_signals.include?(signame)
-      sigdesc = "signal #{signo}"
-      if signame
-        sigdesc = "SIG#{signame} (#{sigdesc})"
+  message, ignore_signals = rest
+  message ||= ''
+  show_progress(message) {
+    faildesc = nil
+    filename = make_srcfile(testsrc)
+    old_stderr = $stderr.dup
+    timeout_signaled = false
+    begin
+      $stderr.reopen("assert_normal_exit.log", "w")
+      io = IO.popen("#{@ruby} -W0 #{filename}")
+      pid = io.pid
+      th = Thread.new {
+        io.read
+        io.close
+        $?
+      }
+      if !th.join(timeout)
+        Process.kill :KILL, pid
+        timeout_signaled = true
       end
-      faildesc = pretty(testsrc, "killed by #{sigdesc}", nil)
-      stderr_log = File.read("assert_normal_exit_stderr.log")
-      if !stderr_log.empty?
-        faildesc << "\n" if /\n\z/ !~ faildesc
-        stderr_log << "\n" if /\n\z/ !~ stderr_log
-        stderr_log.gsub!(/^.*\n/) { '| ' + $& }
-        faildesc << stderr_log
+      status = th.value
+    ensure
+      $stderr.reopen(old_stderr)
+      old_stderr.close
+    end
+    if status && status.signaled?
+      signo = status.termsig
+      signame = Signal.list.invert[signo]
+      unless ignore_signals and ignore_signals.include?(signame)
+        sigdesc = "signal #{signo}"
+        if signame
+          sigdesc = "SIG#{signame} (#{sigdesc})"
+        end
+        if timeout_signaled
+          sigdesc << " (timeout)"
+        end
+        faildesc = pretty(testsrc, "killed by #{sigdesc}", nil)
+        stderr_log = File.read("assert_normal_exit.log")
+        if !stderr_log.empty?
+          faildesc << "\n" if /\n\z/ !~ faildesc
+          stderr_log << "\n" if /\n\z/ !~ stderr_log
+          stderr_log.gsub!(/^.*\n/) { '| ' + $& }
+          faildesc << stderr_log
+        end
       end
     end
-  end
-  if !faildesc
-    $stderr.print '.'
-    true
-  else
-    $stderr.print 'F'
-    error faildesc, message
-    false
-  end
-rescue Exception => err
-  $stderr.print 'E'
-  error err.message, message
-  false
+    faildesc
+  }
 end
 
 def assert_finish(timeout_seconds, testsrc, message = '')
+  if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled? # for --jit-wait
+    timeout_seconds *= 3
+  end
   newtest
-  $stderr.puts "\##{@count} #{@location}" if @verbose
-  faildesc = nil
-  filename = make_srcfile(testsrc)
-  io = IO.popen("#{@ruby} -W0 #{filename}")
-  pid = io.pid
-  waited = false
-  tlimit = Time.now + timeout_seconds
-  while Time.now < tlimit
-    if Process.waitpid pid, Process::WNOHANG
-      waited = true
-      break
+  show_progress(message) {
+    faildesc = nil
+    filename = make_srcfile(testsrc)
+    io = IO.popen("#{@ruby} -W0 #{filename}")
+    pid = io.pid
+    waited = false
+    tlimit = Time.now + timeout_seconds
+    diff = timeout_seconds
+    while diff > 0
+      if Process.waitpid pid, Process::WNOHANG
+        waited = true
+        break
+      end
+      if io.respond_to?(:read_nonblock)
+        if IO.select([io], nil, nil, diff)
+          begin
+            io.read_nonblock(1024)
+          rescue Errno::EAGAIN, IO::WaitReadable, EOFError
+            break
+          end while true
+        end
+      else
+        sleep 0.1
+      end
+      diff = tlimit - Time.now
     end
-    sleep 0.1
-  end
-  if !waited
-    Process.kill(:KILL, pid)
-    Process.waitpid pid
-    faildesc = pretty(testsrc, "not finished in #{timeout_seconds} seconds", nil)
-  end
-  io.close
-  if !faildesc
-    $stderr.print '.'
-  else
-    $stderr.print 'F'
-    error faildesc, message
-  end
-rescue Exception => err
-  $stderr.print 'E'
-  error err.message, message
+    if !waited
+      Process.kill(:KILL, pid)
+      Process.waitpid pid
+      faildesc = pretty(testsrc, "not finished in #{timeout_seconds} seconds", nil)
+    end
+    io.close
+    faildesc
+  }
 end
 
 def flunk(message = '')
   newtest
-  $stderr.print 'F'
-  error message, ''
+  show_progress('') { message }
 end
 
 def pretty(src, desc, result)
-  src = src.sub(/\A.*\n/, '')
+  src = src.sub(/\A\s*\n/, '')
   (/\n/ =~ src ? "\n#{adjust_indent(src)}" : src) + "  #=> #{desc}"
 end
 
 INDENT = 27
 
 def adjust_indent(src)
-  untabify(src).gsub(/^ {#{INDENT}}/o, '').gsub(/^/, '   ')
+  untabify(src).gsub(/^ {#{INDENT}}/o, '').gsub(/^/, '   ').sub(/\s*\z/, "\n")
 end
 
 def untabify(str)
   str.gsub(/^\t+/) {' ' * (8 * $&.size) }
 end
 
-def make_srcfile(src)
+def make_srcfile(src, frozen_string_literal: nil)
   filename = 'bootstraptest.tmp.rb'
   File.open(filename, 'w') {|f|
+    f.puts "#frozen_string_literal:true" if frozen_string_literal
     f.puts "GC.stress = true" if $stress
     f.puts "print(begin; #{src}; end)"
   }
   filename
 end
 
-def get_result_string(src, opt = '')
+def get_result_string(src, opt = '', **argh)
   if @ruby
-    filename = make_srcfile(src)
+    filename = make_srcfile(src, **argh)
     begin
       `#{@ruby} -W0 #{opt} #{filename}`
     ensure
-      raise CoreDumpError, "core dumped" if $? and $?.coredump?
+      raise Interrupt if $? and $?.signaled? && $?.termsig == Signal.list["INT"]
     end
   else
     eval(src).to_s
   end
 end
 
+def with_stderr
+  out = err = nil
+  begin
+    r, w = IO.pipe
+    stderr = $stderr.dup
+    $stderr.reopen(w)
+    w.close
+    reader = Thread.start {r.read}
+    begin
+      out = yield
+    ensure
+      $stderr.reopen(stderr)
+      err = reader.value
+    end
+  ensure
+    w.close rescue nil
+    r.close rescue nil
+  end
+  return out, err
+end
+
 def newtest
   @location = File.basename(caller(2).first)
   @count += 1
@@ -317,7 +494,12 @@ def newtest
 end
 
 def error(msg, additional_message)
-  @errbuf.push "\##{@count} #{@location}: #{msg}  #{additional_message}"
+  msg = "#{@failed}\##{@count} #{@location}#{@reset}: #{msg}  #{additional_message}"
+  if @tty
+    $stderr.puts "#{erase}#{msg}"
+  else
+    @errbuf.push msg
+  end
   @error += 1
 end
 
@@ -328,7 +510,7 @@ def in_temporary_working_directory(dir)
       yield
     }
   else
-    Dir.mktmpdir("bootstraptest.tmpwd") {|d|
+    Dir.mktmpdir(["bootstraptest", ".tmpwd"]) {|d|
       Dir.chdir(d) {
         yield
       }
@@ -337,7 +519,21 @@ def in_temporary_working_directory(dir)
 end
 
 def cleanup_coredump
-  FileUtils.rm_f 'core'
+  if File.file?('core')
+    require 'time'
+    Dir.glob('/tmp/bootstraptest-core.*').each do |f|
+      if Time.now - File.mtime(f) > 7 * 24 * 60 * 60 # 7 days
+        warn "Deleting an old core file: #{f}"
+        FileUtils.rm(f)
+      end
+    end
+    core_path = "/tmp/bootstraptest-core.#{Time.now.utc.iso8601}"
+    warn "A core file is found. Saving it at: #{core_path.dump}"
+    FileUtils.mv('core', core_path)
+    cmd = ['gdb', @ruby, '-c', core_path, '-ex', 'bt', '-batch']
+    p cmd # debugging why it's not working
+    system(*cmd)
+  end
   FileUtils.rm_f Dir.glob('core.*')
   FileUtils.rm_f @ruby+'.stackdump' if @ruby
 end
diff --git a/bootstraptest/test_autoload.rb b/bootstraptest/test_autoload.rb
index 395153f438..a9f8e6dacd 100644
--- a/bootstraptest/test_autoload.rb
+++ b/bootstraptest/test_autoload.rb
@@ -1,54 +1,46 @@
 assert_equal 'ok', %q{
-  open("zzz.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
-  autoload :ZZZ, "./zzz.rb"
-  ZZZ.ok
-}
+  File.unlink('zzz.rb') if File.file?('zzz.rb')
+  instance_eval do
+    autoload :ZZZ, './zzz.rb'
+    begin
+      ZZZ
+    rescue LoadError
+      :ok
+    end
+  end
+}, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
-  open("zzz.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
-  autoload :ZZZ, "./zzz.rb"
-  require "./zzz.rb"
-  ZZZ.ok
-}
+  open('zzz.rb', 'w') {|f| f.puts '' }
+  instance_eval do
+    autoload :ZZZ, './zzz.rb'
+    begin
+      ZZZ
+    rescue NameError
+      :ok
+    end
+  end
+}, '[ruby-dev:43816]'
+
+assert_equal 'ok', %q{
+  open('zzz.rb', 'w') {|f| f.puts 'class ZZZ; def self.ok;:ok;end;end'}
+  instance_eval do
+    autoload :ZZZ, './zzz.rb'
+    ZZZ.ok
+  end
+}, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
   open("zzz.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
   autoload :ZZZ, "./zzz.rb"
-  proc{$SAFE=4; ZZZ.ok}.call
+  ZZZ.ok
 }
 
 assert_equal 'ok', %q{
   open("zzz.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
   autoload :ZZZ, "./zzz.rb"
   require "./zzz.rb"
-  proc{$SAFE=4; ZZZ.ok}.call
-}
-
-assert_equal 'ok', %q{
-  open("zzz.rb", "w") {|f| f.puts "class ZZZ; def hoge;:ok;end;end"}
-  autoload :ZZZ, File.join(Dir.pwd, 'zzz.rb')
-  module M; end
-  Thread.new{M.instance_eval('$SAFE=4; ZZZ.new.hoge')}.value
-}
-
-assert_equal 'ok', %q{
-  open("zzz.rb", "w") {|f| f.puts "class ZZZ; def hoge;:ok;end;end"}
-  autoload :ZZZ, File.join(Dir.pwd, 'zzz.rb')
-  module M; end
-  Thread.new{$SAFE=4; M.instance_eval('ZZZ.new.hoge')}.value
-}
-
-assert_equal 'ok', %q{
-  open("zzz.rb", "w") {|f| f.puts "class ZZZ; def hoge;:ok;end;end"}
-  autoload :ZZZ, File.join(Dir.pwd, 'zzz.rb')
-  Thread.new{$SAFE=4; eval('ZZZ.new.hoge')}.value
-}
-
-assert_equal 'ok', %q{
-  open("zzz.rb", "w") {|f| f.puts "class ZZZ; def hoge;:ok;end;end"}
-  autoload :ZZZ, File.join(Dir.pwd, 'zzz.rb')
-  module M; end
-  Thread.new{eval('$SAFE=4; ZZZ.new.hoge')}.value
+  ZZZ.ok
 }
 
 assert_equal 'okok', %q{
@@ -67,3 +59,12 @@ assert_finish 5, %q{
   end
 }, '[ruby-core:21696]'
 
+assert_equal 'A::C', %q{
+  open("zzz.rb", "w") {}
+  class A
+    autoload :C, "./zzz"
+    class C
+    end
+    C
+  end
+}
diff --git a/bootstraptest/test_block.rb b/bootstraptest/test_block.rb
index ce7f00b033..cdc5960a59 100644
--- a/bootstraptest/test_block.rb
+++ b/bootstraptest/test_block.rb
@@ -75,7 +75,7 @@ assert_equal %q{[1, 2, 3]}, %q{
       }
     end
   end
-  
+
   C.new.to_a
 }
 assert_equal %q{[4, 5, 6]}, %q{
@@ -87,7 +87,7 @@ assert_equal %q{[4, 5, 6]}, %q{
       }
     end
   end
-  
+
   C.new.map{|e|
     e + 3
   }
@@ -110,7 +110,7 @@ assert_equal %q{20}, %q{
   def m
     yield 1
   end
-  
+
   m{|ib|
     m{|jb|
       i = 20
@@ -121,7 +121,7 @@ assert_equal %q{2}, %q{
   def m
     yield 1
   end
-  
+
   m{|ib|
     m{|jb|
       ib = 20
@@ -135,11 +135,11 @@ assert_equal %q{3}, %q{
       yield
     }
   end
-  
+
   def iter2
     yield
   end
-  
+
   iter1{
     jb = 2
     iter1{
@@ -154,11 +154,11 @@ assert_equal %q{2}, %q{
       yield
     }
   end
-  
+
   def iter2
     yield
   end
-  
+
   iter1{
     jb = 2
     iter1{
@@ -226,11 +226,11 @@ assert_equal %q{[10, 20, 30, 40, nil, nil]}, %q{
 }
 assert_equal %q{[1]}, %q{
   $a = []
-  
+
   def iter
     yield 1
   end
-  
+
   def m
     x = iter{|x|
       $a << x
@@ -450,7 +450,7 @@ assert_equal 'ok', %q{
   end
   vs1 = []
   C.new.each {|*v| vs1 << v }
-  vs2 = []               
+  vs2 = []
   C.new.to_enum.each {|*v| vs2 << v }
   vs1 == vs2 ? :ok : :ng
 }, '[ruby-dev:32329]'
@@ -468,9 +468,9 @@ assert_equal '[nil, []]', %q{
   def m() yield nil,[] end
   l = lambda {|*v| v}
   GC.stress=true
-  r = m(&l)      
+  r = m(&l)
   GC.stress=false
-  r.inspect             
+  r.inspect
 }, '[ruby-dev:32567]'
 
 assert_equal NilClass.to_s, %q{
@@ -565,3 +565,49 @@ assert_normal_exit %q{
   t.test_for_bug
 }, '[ruby-core:14395]'
 
+assert_equal 'true', %q{
+  class C0
+    def foo
+      block_given?
+    end
+  end
+
+  class C1 < C0
+    def foo
+      super
+    end
+  end
+
+  C1.new.foo{}
+}
+
+assert_equal 'true', %q{
+  class C0
+    def foo
+      block_given?
+    end
+  end
+
+  class C1 < C0
+    def foo
+      super()
+    end
+  end
+
+  C1.new.foo{}
+}
+
+assert_equal 'ok', %q{
+  1.times do
+    begin
+      raise
+    rescue
+      begin
+        raise
+      rescue
+        break
+      end
+    end
+  end
+  'ok'
+}
diff --git a/bootstraptest/test_class.rb b/bootstraptest/test_class.rb
index ad2844106f..b7fe0a1acd 100644
--- a/bootstraptest/test_class.rb
+++ b/bootstraptest/test_class.rb
@@ -11,6 +11,16 @@ assert_equal 'C',       %q( class C; end
                             C.new.class.name )
 assert_equal 'Class',   %q( class C; end
                             C.new.class.class )
+assert_equal 'true',    %q( Object.__send__(:remove_const, :TrueClass)
+                            GC.start
+                            true.inspect)
+assert_equal 'false',   %q( Object.__send__(:remove_const, :FalseClass)
+                            GC.start
+                            false.inspect)
+assert_equal 'nil',     %q( Object.__send__(:remove_const, :NilClass)
+                            GC.start
+                            nil.inspect)
+
 
 # inherited class
 assert_equal 'true',    %q( class A; end
@@ -144,3 +154,16 @@ assert_equal '3', %q{
   }
   $i
 }
+
+assert_match /::C\z/, %q{
+  c = nil
+  Module.new{|m| c = class m::C; name; end}
+  c
+}, '[ruby-dev:38456]'
+
+assert_normal_exit %q{
+  s = Symbol.dup
+  class << s
+  end
+  s.allocate.to_s
+}, '[ruby-core:30843]'
diff --git a/bootstraptest/test_env.rb b/bootstraptest/test_env.rb
new file mode 100644
index 0000000000..7d1b45b75e
--- /dev/null
+++ b/bootstraptest/test_env.rb
@@ -0,0 +1,12 @@
+assert_equal "true", %q{
+  ENV["ENVTEST"] = "\u{e9 3042 d76c}"
+  env = ENV["ENVTEST"]
+  env.valid_encoding?
+}
+
+# different encoding is used for PATH
+assert_equal "true", %q{
+  ENV["PATH"] = "\u{e9 3042 d76c}"
+  env = ENV["PATH"]
+  env.valid_encoding?
+}
diff --git a/bootstraptest/test_eval.rb b/bootstraptest/test_eval.rb
index 6dc23468cb..5d2593c306 100644
--- a/bootstraptest/test_eval.rb
+++ b/bootstraptest/test_eval.rb
@@ -109,14 +109,14 @@ assert_equal %q{foo}, %q{
   }
 }
 assert_equal %q{1}, %q{
-  class Fixnum
+  class Integer
     Const = 1
   end
   1.instance_eval %{
     Const
   }
 }
-assert_equal %q{C}, %q{
+assert_equal %q{top}, %q{
   Const = :top
   class C
     Const = :C
@@ -137,7 +137,7 @@ assert_equal %q{C}, %q{
   }
   C.new.m
 }
-assert_equal %q{C}, %q{
+assert_equal %q{top}, %q{
   Const = :top
   class C
     Const = :C
@@ -190,7 +190,8 @@ assert_equal %q{[10, main]}, %q{
 }
 
 %w[break next redo].each do |keyword|
-  assert_match %r"Can't escape from eval with #{keyword}\z", %{
+  assert_match %r"Can't escape from eval with #{keyword}\b", %{
+    STDERR.reopen(STDOUT)
     begin
       eval "0 rescue #{keyword}"
     rescue SyntaxError => e
@@ -249,7 +250,9 @@ assert_equal 'ok', %q{
 
 assert_equal 'ok', %q{
   begin
-    12.instance_eval { @@a }
+    class A
+      12.instance_eval { @@a }
+    end
   rescue NameError
     :ok
   end
@@ -257,37 +260,33 @@ assert_equal 'ok', %q{
 
 assert_equal 'ok', %q{
   begin
-    12.instance_exec { @@a }
+    class A
+      12.instance_exec { @@a }
+    end
   rescue NameError
     :ok
   end
 }, '[ruby-core:16794]'
 
 assert_equal 'ok', %q{
-  begin
-    nil.instance_eval {
-      def a() :a end
-    }
-  rescue TypeError
-    :ok
-  end
-}, '[ruby-core:16796]'
+  nil.instance_eval {
+    def defd_using_instance_eval() :ok end
+  }
+  nil.defd_using_instance_eval
+}, '[ruby-core:28324]'
 
 assert_equal 'ok', %q{
-  begin
-    nil.instance_exec {
-      def a() :a end
-    }
-  rescue TypeError
-    :ok
-  end
-}, '[ruby-core:16796]'
+  nil.instance_exec {
+    def defd_using_instance_exec() :ok end
+  }
+  nil.defd_using_instance_exec
+}, '[ruby-core:28324]'
 
 assert_normal_exit %q{
   eval("", method(:proc).call {}.binding)
 }
 
-assert_equal "(eval):1:in `block in <main>': ", %q{
+assert_equal "", %q{
   b = binding
   10.times{
     eval('', b)
@@ -297,5 +296,34 @@ assert_equal "(eval):1:in `block in <main>': ", %q{
   rescue => e
     e.message
   end
-}, ' [ruby-dev:35392]'
+}, '[ruby-dev:35392]'
+
+assert_equal "[:x]", %q{
+  def kaboom!
+    yield.eval("local_variables")
+  end
+
+  for x in enum_for(:kaboom!)
+    binding
+  end
+}, '[ruby-core:25125]'
+
+assert_normal_exit %q{
+  hash = {}
+  ("aaaa".."matz").each_with_index do |s, i|
+    hash[s] = i
+  end
+  begin
+    eval "class C; @@h = #{hash.inspect}; end"
+  end
+}, '[ruby-core:25714]'
+
+assert_normal_exit %q{
+  begin
+    eval("# encoding:utf-16le\nfoo")
+  rescue Exception => e
+    p e
+    RubyVM::InstructionSequence.compile("p:hello")
+  end
+}, 'check escaping the internal value th->base_block'
 
diff --git a/bootstraptest/test_exception.rb b/bootstraptest/test_exception.rb
index bd3d02ade3..0fb6f552b8 100644
--- a/bootstraptest/test_exception.rb
+++ b/bootstraptest/test_exception.rb
@@ -97,7 +97,7 @@ assert_equal %q{[#<RuntimeError: FOO>, #<RuntimeError: FOO>]}, %q{
   def m
     $!
   end
-  
+
   begin
     begin
       raise "FOO"
@@ -205,11 +205,11 @@ assert_equal %q{3}, %q{
 assert_equal %q{ok3}, %q{
   class E1 < Exception
   end
-  
+
   def m
     yield
   end
-  
+
   begin
     begin
       begin
@@ -239,7 +239,7 @@ assert_equal %q{7}, %q{
           $i += 2
           break
         ensure
-          
+
         end
       ensure
         $i += 4
@@ -247,7 +247,7 @@ assert_equal %q{7}, %q{
       $i = 0
     }
   end
-  
+
   def iter
     yield
   end
@@ -349,7 +349,7 @@ assert_equal %q{12}, %q{
    7+7
  end
    }
-assert_equal %q{ok}, %q{ # 
+assert_equal %q{ok}, %q{ #
   proc{
     begin
       raise
@@ -370,13 +370,13 @@ assert_equal %q{}, %q{
 }
 
 ##
-assert_match /undefined method `foo\'/, %q{
+assert_match /undefined method `foo\'/, %q{#`
   STDERR.reopen(STDOUT)
   class C
     def inspect
       bar {}
     end
-    
+
     def bar
       raise
     ensure
@@ -402,3 +402,31 @@ assert_equal 'nil', %q{
   exc.inspect
 }, '[ruby-dev:32608]'
 
+assert_equal 'divided by 0', %q{
+  class ZeroDivisionError
+    def self.new(message)
+      42
+    end
+  end
+  begin
+    1/0
+  rescue Exception => e
+    e.message
+  end
+}, '[ruby-core:24767]'
+
+assert_equal 'ok', %q{
+  class C
+    def ===(o)
+      true
+    end
+  end
+  begin
+    begin
+      raise
+    rescue C.new
+    end
+  rescue TypeError
+    :ok
+  end
+}
diff --git a/bootstraptest/test_fiber.rb b/bootstraptest/test_fiber.rb
new file mode 100644
index 0000000000..35e1bf6851
--- /dev/null
+++ b/bootstraptest/test_fiber.rb
@@ -0,0 +1,39 @@
+show_limit %q{
+  fibers = []
+  begin
+    fiber = Fiber.new{Fiber.yield}
+    fiber.resume
+    fibers << fiber
+
+    raise Exception, "skipping" if fibers.count >= 10_000
+  rescue Exception => error
+    puts "Fiber count: #{fibers.count} (#{error})"
+    break
+  end while true
+}
+
+assert_equal %q{ok}, %q{
+  Fiber.new{
+  }.resume
+  :ok
+}
+
+assert_equal %q{ok}, %q{
+  10_000.times.collect{Fiber.new{}}
+  :ok
+}
+
+assert_equal %q{ok}, %q{
+  fibers = 100.times.collect{Fiber.new{Fiber.yield}}
+  fibers.each(&:resume)
+  fibers.each(&:resume)
+  :ok
+}
+
+assert_normal_exit %q{
+  at_exit { Fiber.new{}.resume }
+}
+
+assert_normal_exit %q{
+  Fiber.new(&Object.method(:class_eval)).resume("foo")
+}, '[ruby-dev:34128]'
diff --git a/bootstraptest/test_flow.rb b/bootstraptest/test_flow.rb
index 46ca1a0c6a..35f19db588 100644
--- a/bootstraptest/test_flow.rb
+++ b/bootstraptest/test_flow.rb
@@ -29,7 +29,7 @@ assert_equal %q{ok}, %q{
       end
     end
   end
-  
+
   ('a').lines.map{|e|
     break :ok
   }
@@ -502,3 +502,100 @@ assert_equal %Q{ENSURE\n}, %q{
   test
 }, '[ruby-dev:37967]'
 
+[['[ruby-core:28129]', %q{
+  class Bug2728
+    include Enumerable
+    define_method(:dynamic_method) do
+      "dynamically defined method"
+    end
+    def each
+      begin
+        yield :foo
+      ensure
+        dynamic_method
+      end
+    end
+  end
+  e = Bug2728.new
+}],
+ ['[ruby-core:28132]', %q{
+  class Bug2729
+    include Enumerable
+    def each
+      begin
+        yield :foo
+      ensure
+        proc {}.call
+      end
+    end
+  end
+  e = Bug2729.new
+}],
+ ['[ruby-core:39125]', %q{
+  class Bug5234
+    include Enumerable
+    def each(&block)
+      begin
+        yield :foo
+      ensure
+        proc(&block)
+      end
+    end
+  end
+  e = Bug5234.new
+}],
+ ['[ruby-dev:45656]', %q{
+  class Bug6460
+    include Enumerable
+    def each(&block)
+      begin
+        yield :foo
+      ensure
+        1.times { Proc.new(&block) }
+      end
+    end
+  end
+  e = Bug6460.new
+}]].each do |bug, src|
+  assert_equal "foo", src + %q{e.detect {true}}, bug
+  assert_equal "true", src + %q{e.any? {true}}, bug
+  assert_equal "false", src + %q{e.all? {false}}, bug
+  assert_equal "true", src + %q{e.include?(:foo)}, bug
+end
+
+assert_equal "foo", %q{
+  class Bug6460
+    def m1
+      m2 {|e|
+        return e
+      }
+    end
+
+    def m2
+      begin
+        yield :foo
+      ensure
+        begin
+          begin
+            yield :foo
+          ensure
+            Proc.new
+            raise ''
+          end
+        rescue
+        end
+      end
+    end
+  end
+  Bug6460.new.m1
+}, '[ruby-dev:46372]'
+
+assert_equal "foo", %q{
+  obj = "foo"
+  if obj || any1
+    any2 = any2
+  else
+    raise obj.inspect
+  end
+  obj
+}, '[ruby-core:87830]'
diff --git a/bootstraptest/test_fork.rb b/bootstraptest/test_fork.rb
index 743c22c250..83923dad97 100644
--- a/bootstraptest/test_fork.rb
+++ b/bootstraptest/test_fork.rb
@@ -8,3 +8,70 @@ assert_equal '0', %q{
     0
   end
 }, '[ruby-dev:32404]'
+
+assert_finish 10, %q{
+  begin
+    children = (1..10).map{
+      Thread.start{fork{}}.value
+    }
+    while !children.empty? and pid = Process.wait
+      children.delete(pid)
+    end
+  rescue NotImplementedError
+  end
+}, '[ruby-core:22158]'
+
+# temporarily stop this test to enable explicit failure when
+# timer thread couldn't be created (r61706 and r61717).
+assert_normal_exit(<<'End', '[ruby-dev:37934]') if false
+  main = Thread.current
+  Thread.new { sleep 0.01 until main.stop?; Thread.kill main }
+  Process.setrlimit(:NPROC, 1) if defined?(Process::RLIMIT_NPROC)
+  fork {}
+End
+
+assert_equal 'ok', %q{
+  begin
+    r, w = IO.pipe
+    if pid1 = fork
+      w.close
+      r.read(1)
+      Process.kill("USR1", pid1)
+      _, s = Process.wait2(pid1)
+      s.success? ? :ok : :ng
+    else
+      r.close
+      if pid2 = fork
+        trap("USR1") { Time.now.to_s; Process.kill("USR2", pid2) }
+        w.close
+        Process.wait2(pid2)
+      else
+        w.close
+        sleep 0.2
+      end
+      exit true
+    end
+  rescue NotImplementedError
+    :ok
+  end
+}, '[ruby-core:28924]'
+
+assert_equal '[1, 2]', %q{
+  a = []
+  main = Thread.current
+  trap(:INT) { a.push(1).size == 2 and main.wakeup }
+  trap(:TERM) { a.push(2).size == 2 and main.wakeup }
+  pid = $$
+  begin
+    pid = fork do
+      Process.kill(:INT, pid)
+      Process.kill(:TERM, pid)
+    end
+    Process.wait(pid)
+    100.times {break if a.size > 1; sleep 0.001}
+    a.sort
+  rescue NotImplementedError
+    [1, 2]
+  end
+}, '[ruby-dev:44005] [Ruby 1.9 - Bug #4950]'
+
diff --git a/bootstraptest/test_gc.rb b/bootstraptest/test_gc.rb
new file mode 100644
index 0000000000..eb68c9845e
--- /dev/null
+++ b/bootstraptest/test_gc.rb
@@ -0,0 +1,34 @@
+assert_normal_exit %q{
+a = []
+ms = "a".."k"
+("A".."Z").each do |mod|
+  mod = eval("module #{mod}; self; end")
+  ms.each do |meth|
+    iseq = RubyVM::InstructionSequence.compile("module #{mod}; def #{meth}; end; end")
+    GC.stress = true
+    iseq.eval
+    GC.stress = false
+  end
+  o = Object.new.extend(mod)
+  ms.each do |meth|
+    o.send(meth)
+  end
+end
+}, '[ruby-dev:39453]'
+
+assert_normal_exit %q{
+a = []
+ms = "a".."k"
+("A".."Z").each do |mod|
+  mod = eval("module #{mod}; self; end")
+  ms.each do |meth|
+    GC.stress = true
+    mod.module_eval {define_method(meth) {}}
+    GC.stress = false
+  end
+  o = Object.new.extend(mod)
+  ms.each do |meth|
+    o.send(meth)
+  end
+end
+}, '[ruby-dev:39453]'
diff --git a/bootstraptest/test_insns.rb b/bootstraptest/test_insns.rb
new file mode 100644
index 0000000000..9052cad7bd
--- /dev/null
+++ b/bootstraptest/test_insns.rb
@@ -0,0 +1,439 @@
+# C0 coverage of each instructions
+
+# :NOTE: This is for development purpose; never consider this file as
+# ISeq compilation specification.
+
+begin
+  # This library brings some additional coverage.
+  # Not mandatory.
+  require 'rbconfig/sizeof'
+rescue LoadError
+  # OK, just skip
+else
+  if defined? RbConfig::LIMITS
+    $FIXNUM_MAX = RbConfig::LIMITS["FIXNUM_MAX"]
+    $FIXNUM_MIN = RbConfig::LIMITS["FIXNUM_MIN"]
+  end
+end
+
+fsl   = { frozen_string_literal: true } # used later
+tests = [
+  # insn ,   expression to generate such insn
+  [ 'nop',   %q{ raise rescue true }, ],
+
+  [ 'setlocal *, 0', %q{ x = true }, ],
+  [ 'setlocal *, 1', %q{ x = nil; -> { x = true }.call }, ],
+  [ 'setlocal',      %q{ x = nil; -> { -> { x = true }.() }.() }, ],
+  [ 'getlocal *, 0', %q{ x = true; x }, ],
+  [ 'getlocal *, 1', %q{ x = true; -> { x }.call }, ],
+  [ 'getlocal',      %q{ x = true; -> { -> { x }.() }.() }, ],
+
+  [ 'setblockparam', <<-'},', ], # {
+    def m&b
+      b = # here
+        proc { true }
+    end
+    m { false }.call
+  },
+  [ 'getblockparam', <<-'},', ], # {
+    def m&b
+      b # here
+    end
+    m { true }.call
+  },
+  [ 'getblockparamproxy', <<-'},', ], # {
+    def m&b
+      b # here
+        .call
+    end
+    m { true }
+  },
+
+  [ 'setspecial', %q{ true if true..true }, ],
+  [ 'getspecial', %q{ $&.nil? }, ],
+  [ 'getspecial', %q{ $`.nil? }, ],
+  [ 'getspecial', %q{ $'.nil? }, ],
+  [ 'getspecial', %q{ $+.nil? }, ],
+  [ 'getspecial', %q{ $1.nil? }, ],
+  [ 'getspecial', %q{ $128.nil? }, ],
+
+  [ 'getglobal', %q{ String === $0 }, ],
+  [ 'getglobal', %q{ $_.nil? }, ],
+  [ 'setglobal', %q{ $0 = "true" }, ],
+
+  [ 'setinstancevariable', %q{ @x = true }, ],
+  [ 'getinstancevariable', %q{ @x = true; @x }, ],
+
+  [ 'setclassvariable', %q{ class A; @@x = true; end }, ],
+  [ 'getclassvariable', %q{ class A; @@x = true; @@x end }, ],
+
+  [ 'setconstant', %q{ X = true }, ],
+  [ 'setconstant', %q{ Object::X = true }, ],
+  [ 'getconstant', %q{ X = true; X }, ],
+  [ 'getconstant', %q{ X = true; Object::X }, ],
+
+  [ 'getinlinecache / setinlinecache', %q{ def x; X; end; X = true; x; x; x }, ],
+
+  [ 'putnil',               %q{ $~ == nil }, ],
+  [ 'putself',              %q{ $~ != self }, ],
+  [ 'putobject INT2FIX(0)', %q{ $~ != 0 }, ],
+  [ 'putobject INT2FIX(1)', %q{ $~ != 1 }, ],
+  [ 'putobject',            %q{ $~ != -1 }, ],
+  [ 'putobject',            %q{ $~ != /x/ }, ],
+  [ 'putobject',            %q{ $~ != :x }, ],
+  [ 'putobject',            %q{ $~ != (1..2) }, ],
+  [ 'putobject',            %q{ $~ != true }, ],
+  [ 'putobject',            %q{ /(?<x>x)/ =~ "x"; x == "x" }, ],
+
+  [ 'putspecialobject',         %q{ {//=>true}[//] }, ],
+  [ 'putstring',                %q{ "true" }, ],
+  [ 'tostring / concatstrings', %q{ "#{true}" }, ],
+  [ 'toregexp',                 %q{ /#{true}/ =~ "true" && $~ }, ],
+  [ 'intern',                   %q{ :"#{true}" }, ],
+
+  [ 'newarray',    %q{ ["true"][0] }, ],
+  [ 'newarraykwsplat', %q{ [**{x:'true'}][0][:x] }, ],
+  [ 'duparray',    %q{ [ true ][0] }, ],
+  [ 'expandarray', %q{ y = [ true, false, nil ]; x, = y; x }, ],
+  [ 'expandarray', %q{ y = [ true, false, nil ]; x, *z = y; x }, ],
+  [ 'expandarray', %q{ y = [ true, false, nil ]; x, *z, w = y; x }, ],
+  [ 'splatarray',  %q{ x, = *(y = true), false; x }, ],
+  [ 'concatarray', %q{ ["t", "r", *x = "u", "e"].join }, ],
+  [ 'concatarray', <<-'},', ],  # {
+    class X; def to_a; ['u']; end; end
+    ['t', 'r', *X.new, 'e'].join
+  },
+  [ 'concatarray', <<-'},', ],  # {
+    r = false
+    t = [true, nil]
+    q, w, e = r, *t             # here
+    w
+  },
+
+  [ 'newhash',  %q{ x = {}; x[x] = true }, ],
+  [ 'newhash',  %q{ x = true; { x => x }[x] }, ],
+  [ 'newhashfromarray', %q{ { a: true }[:a] }, ],
+  [ 'newrange', %q{ x = 1; [*(0..x)][0] == 0 }, ],
+  [ 'newrange', %q{ x = 1; [*(0...x)][0] == 0 }, ],
+
+  [ 'pop',     %q{ def x; true; end; x }, ],
+  [ 'dup',     %q{ x = y = true; x }, ],
+  [ 'dupn',    %q{ Object::X ||= true }, ],
+  [ 'reverse', %q{ q, (w, e), r = 1, [2, 3], 4; e == 3 }, ],
+  [ 'swap',    <<-'},', ],      # {
+    x = [[false, true]]
+    for i, j in x               # here
+      ;
+    end
+    j
+  },
+
+  [ 'topn',        %q{ x, y = [], 0; x[*y], = [true, false]; x[0] }, ],
+  [ 'setn',        %q{ x, y = [], 0; x[*y]  =  true        ; x[0] }, ],
+  [ 'adjuststack', %q{ x = [true]; x[0] ||= nil; x[0] }, ],
+
+  [ 'defined',      %q{ !defined?(x) }, ],
+  [ 'checkkeyword', %q{ def x x:rand;x end; x x: true }, ],
+  [ 'checktype',    %q{ x = true; "#{x}" }, ],
+  [ 'checkmatch',   <<-'},', ], # {
+    x = y = true
+    case x
+    when false
+      y = false
+    when true                   # here
+      y = nil
+    end
+    y == nil
+  },
+  [ 'checkmatch',   <<-'},', ], # {
+    x, y = true, [false]
+    case x
+    when *y                     # here
+      z = false
+    else
+      z = true
+    end
+    z
+  },
+  [ 'checkmatch',   <<-'},', ], # {
+    x = false
+    begin
+      raise
+    rescue                      # here
+      x = true
+    end
+    x
+  },
+
+  [ 'defineclass', %q{                 module X;    true end }, ],
+  [ 'defineclass', %q{ X = Module.new; module X;    true end }, ],
+  [ 'defineclass', %q{                 class X;     true end }, ],
+  [ 'defineclass', %q{ X = Class.new;  class X;     true end }, ],
+  [ 'defineclass', %q{ X = Class.new;  class Y < X; true end }, ],
+  [ 'defineclass', %q{ X = Class.new;  class << X;  true end }, ],
+  [ 'defineclass', <<-'},', ], # {
+    X = Class.new
+    Y = Class.new(X)
+    class Y < X
+      true
+    end
+  },
+
+  [ 'opt_send_without_block', %q{ true.to_s }, ],
+  [ 'send',                   %q{ true.tap {|i| i.to_s } }, ],
+  [ 'leave',                  %q{ def x; true; end; x }, ],
+  [ 'invokesuper',            <<-'},', ], # {
+    class X < String
+      def empty?
+        super                   # here
+      end
+    end
+   X.new.empty?
+  },
+  [ 'invokeblock',            <<-'},', ], # {
+    def x
+      return yield self         # here
+    end
+    x do
+      true
+    end
+  },
+
+  [ 'opt_str_freeze', %q{ 'true'.freeze }, ],
+  [ 'opt_nil_p',      %q{ nil.nil? }, ],
+  [ 'opt_nil_p',      %q{ !Object.nil? }, ],
+  [ 'opt_nil_p',      %q{ Class.new{def nil?; true end}.new.nil? }, ],
+  [ 'opt_str_uminus', %q{ -'true' }, ],
+  [ 'opt_str_freeze', <<-'},', ], # {
+    class String
+      def freeze
+        true
+      end
+    end
+    'true'.freeze
+  },
+
+  [ 'opt_newarray_max', %q{ [ ].max.nil? }, ],
+  [ 'opt_newarray_max', %q{ [1, x = 2, 3].max == 3 }, ],
+  [ 'opt_newarray_max', <<-'},', ], # {
+    class Array
+      def max
+        true
+      end
+    end
+    [1, x = 2, 3].max
+  },
+  [ 'opt_newarray_min', %q{ [ ].min.nil? }, ],
+  [ 'opt_newarray_min', %q{ [3, x = 2, 1].min == 1 }, ],
+  [ 'opt_newarray_min', <<-'},', ], # {
+    class Array
+      def min
+        true
+      end
+    end
+    [3, x = 2, 1].min
+  },
+
+  [ 'throw',        %q{ false.tap { break true } }, ],
+  [ 'branchif',     %q{ x = nil;  x ||= true }, ],
+  [ 'branchif',     %q{ x = true; x ||= nil; x }, ],
+  [ 'branchunless', %q{ x = 1;    x &&= true }, ],
+  [ 'branchunless', %q{ x = nil;  x &&= true; x.nil? }, ],
+  [ 'branchnil',    %q{ x = true; x&.to_s }, ],
+  [ 'branchnil',    %q{ x = nil;  (x&.to_s).nil? }, ],
+  [ 'jump',         <<-'},', ], # {
+    y = 1
+    x = if y == 0 then nil elsif y == 1 then true else nil end
+    x
+  },
+  [ 'jump',         <<-'},', ], # {
+    # ultra complicated situation: this ||= assignment only generates
+    # 15 instructions, not including the class definition.
+    class X; attr_accessor :x; end
+    x = X.new
+    x&.x ||= true               # here
+  },
+
+  [ 'once', %q{ /#{true}/o =~ "true" && $~ }, ],
+  [ 'once', <<-'},', ],         # {
+    def once expr
+      return /#{expr}/o         # here
+    end
+    x = once(true); x = once(false); x = once(nil);
+    x =~ "true" && $~
+  },
+  [ 'once', <<-'},', ],         # {
+    # recursive once
+    def once n
+      return %r/#{
+        if n == 0
+          true
+        else
+          once(n-1)             # here
+        end
+      }/ox
+    end
+    x = once(128); x = once(7); x = once(16);
+    x =~ "true" && $~
+  },
+  [ 'once', <<-'},', ],         # {
+    # inter-thread lockup situation
+    def once n
+      return Thread.start n do |m|
+        Thread.pass
+        next %r/#{
+          sleep m               # here
+          true
+        }/ox
+      end
+    end
+    x = once(1); y = once(0.1); z = y.value
+    z =~ "true" && $~
+  },
+
+  [ 'opt_case_dispatch', %q{ case   0 when 1.1 then false else true end }, ],
+  [ 'opt_case_dispatch', %q{ case 1.0 when 1.1 then false else true end }, ],
+
+  [ 'opt_plus',    %q{ 1 + 1 == 2 }, ],
+  if defined? $FIXNUM_MAX then
+    [ 'opt_plus',  %Q{ #{ $FIXNUM_MAX } + 1 == #{ $FIXNUM_MAX + 1 } }, ]
+  end,
+  [ 'opt_plus',    %q{ 1.0 + 1.0 == 2.0 }, ],
+  [ 'opt_plus',    %q{ x = +0.0.next_float; x + x >= x }, ],
+  [ 'opt_plus',    %q{ 't' + 'rue' }, ],
+  [ 'opt_plus',    %q{ ( ['t'] + ['r', ['u', ['e'], ], ] ).join }, ],
+  [ 'opt_plus',    %q{ Time.at(1) + 1 == Time.at(2) }, ],
+  [ 'opt_minus',   %q{ 1 - 1 == 0 }, ],
+  if defined? $FIXNUM_MIN then
+    [ 'opt_minus', %Q{ #{ $FIXNUM_MIN } - 1 == #{ $FIXNUM_MIN - 1 } }, ]
+  end,
+  [ 'opt_minus',   %q{ 1.0 - 1.0 == 0.0 }, ],
+  [ 'opt_minus',   %q{ x = -0.0.prev_float; x - x == 0.0 }, ],
+  [ 'opt_minus',   %q{ ( [false, true] - [false] )[0] }, ],
+  [ 'opt_mult',    %q{ 1 * 1 == 1 }, ],
+  [ 'opt_mult',    %q{ 1.0 * 1.0 == 1.0 }, ],
+  [ 'opt_mult',    %q{ x = +0.0.next_float; x * x <= x }, ],
+  [ 'opt_mult',    %q{ ( "ruet" * 3 )[7,4] }, ],
+  [ 'opt_div',     %q{ 1 / 1 == 1 }, ],
+  [ 'opt_div',     %q{ 1.0 / 1.0 == 1.0 }, ],
+  [ 'opt_div',     %q{ x = +0.0.next_float; x / x >= x }, ],
+  [ 'opt_div',     %q{ x = 1/2r; x / x == 1 }, ],
+  [ 'opt_mod',     %q{ 1 % 1 == 0 }, ],
+  [ 'opt_mod',     %q{ 1.0 % 1.0 == 0.0 }, ],
+  [ 'opt_mod',     %q{ x = +0.0.next_float; x % x == 0.0 }, ],
+  [ 'opt_mod',     %q{ '%s' % [ true ] }, ],
+
+  [ 'opt_eq', %q{ 1 == 1 }, ],
+  [ 'opt_eq', <<-'},', ],       # {
+    class X; def == other; true; end; end
+    X.new == true
+  },
+  [ 'opt_neq', %q{ 1 != 0 }, ],
+  [ 'opt_neq', <<-'},', ],       # {
+    class X; def != other; true; end; end
+    X.new != true
+  },
+
+  [ 'opt_lt', %q{            -1   <  0 }, ],
+  [ 'opt_lt', %q{            -1.0 <  0.0 }, ],
+  [ 'opt_lt', %q{ -0.0.prev_float <  0.0 }, ],
+  [ 'opt_lt', %q{              ?a <  ?z }, ],
+  [ 'opt_le', %q{            -1   <= 0 }, ],
+  [ 'opt_le', %q{            -1.0 <= 0.0 }, ],
+  [ 'opt_le', %q{ -0.0.prev_float <= 0.0 }, ],
+  [ 'opt_le', %q{              ?a <= ?z }, ],
+  [ 'opt_gt', %q{             1   >  0 }, ],
+  [ 'opt_gt', %q{             1.0 >  0.0 }, ],
+  [ 'opt_gt', %q{ +0.0.next_float >  0.0 }, ],
+  [ 'opt_gt', %q{              ?z >  ?a }, ],
+  [ 'opt_ge', %q{             1   >= 0 }, ],
+  [ 'opt_ge', %q{             1.0 >= 0.0 }, ],
+  [ 'opt_ge', %q{ +0.0.next_float >= 0.0 }, ],
+  [ 'opt_ge', %q{              ?z >= ?a }, ],
+
+  [ 'opt_ltlt', %q{  '' << 'true' }, ],
+  [ 'opt_ltlt', %q{ ([] << 'true').join }, ],
+  [ 'opt_ltlt', %q{ (1 << 31) == 2147483648 }, ],
+
+  [ 'opt_aref', %q{ ['true'][0] }, ],
+  [ 'opt_aref', %q{ { 0 => 'true'}[0] }, ],
+  [ 'opt_aref', %q{ 'true'[0] == ?t }, ],
+  [ 'opt_aset', %q{ [][0] = true }, ],
+  [ 'opt_aset', %q{ {}[0] = true }, ],
+  [ 'opt_aset', %q{ x = 'frue'; x[0] = 't'; x }, ],
+  [ 'opt_aset', <<-'},', ], # {
+    # opt_aref / opt_aset mixup situation
+    class X; def x; {}; end; end
+    x = X.new
+    x&.x[true] ||= true         # here
+  },
+
+  [ 'opt_aref_with', %q{ { 'true' => true }['true'] }, ],
+  [ 'opt_aref_with', %q{ Struct.new(:nil).new['nil'].nil? }, ],
+  [ 'opt_aset_with', %q{ {}['true'] = true }, ],
+  [ 'opt_aset_with', %q{ Struct.new(:true).new['true'] = true }, ],
+
+  [ 'opt_length',  %q{   'true'       .length == 4 }, ],
+  [ 'opt_length',  %q{   :true        .length == 4 }, ],
+  [ 'opt_length',  %q{ [ 'true' ]     .length == 1 }, ],
+  [ 'opt_length',  %q{ { 'true' => 1 }.length == 1 }, ],
+  [ 'opt_size',    %q{   'true'       .size   == 4 }, ],
+  [ 'opt_size',    %q{               1.size   >= 4 }, ],
+  [ 'opt_size',    %q{ [ 'true' ]     .size   == 1 }, ],
+  [ 'opt_size',    %q{ { 'true' => 1 }.size   == 1 }, ],
+  [ 'opt_empty_p', %q{ ''.empty? }, ],
+  [ 'opt_empty_p', %q{ [].empty? }, ],
+  [ 'opt_empty_p', %q{ {}.empty? }, ],
+  [ 'opt_empty_p', %q{ Queue.new.empty? }, ],
+
+  [ 'opt_succ',  %q{ 1.succ == 2 }, ],
+  if defined? $FIXNUM_MAX then
+    [ 'opt_succ',%Q{ #{ $FIXNUM_MAX }.succ == #{ $FIXNUM_MAX + 1 } }, ]
+  end,
+  [ 'opt_succ',  %q{ '1'.succ == '2' }, ],
+
+  [ 'opt_not',  %q{ ! false }, ],
+  [ 'opt_neq', <<-'},', ],       # {
+    class X; def !; true; end; end
+    ! X.new
+  },
+
+  [ 'opt_regexpmatch2',  %q{ /true/ =~ 'true' && $~ }, ],
+  [ 'opt_regexpmatch2', <<-'},', ],       # {
+    class Regexp; def =~ other; true; end; end
+    /true/ =~ 'true'
+  },
+  [ 'opt_regexpmatch2',  %q{ 'true' =~ /true/ && $~ }, ],
+  [ 'opt_regexpmatch2', <<-'},', ],       # {
+    class String; def =~ other; true; end; end
+    'true' =~ /true/
+  },
+]
+
+# normal path
+tests.compact.each do |(insn, expr, *a)|
+  if a.last.is_a?(Hash)
+    a = a.dup
+    kw = a.pop
+    assert_equal 'true', expr, insn, *a, **kw
+  else
+    assert_equal 'true', expr, insn, *a
+  end
+end
+
+# with trace
+tests.compact.each {|(insn, expr, *a)|
+  progn = "set_trace_func(proc{})\n" + expr
+  if a.last.is_a?(Hash)
+    a = a.dup
+    kw = a.pop
+    assert_equal 'true', progn, 'trace_' + insn, *a, **kw
+  else
+    assert_equal 'true', progn, 'trace_' + insn, *a
+  end
+}
+
+assert_normal_exit("#{<<-"begin;"}\n#{<<-'end;'}")
+begin;
+  RubyVM::InstructionSequence.compile("", debug_level: 5)
+end;
diff --git a/bootstraptest/test_io.rb b/bootstraptest/test_io.rb
index 83b38f8cce..89c00d0b88 100644
--- a/bootstraptest/test_io.rb
+++ b/bootstraptest/test_io.rb
@@ -2,37 +2,40 @@ assert_finish 5, %q{
   r, w = IO.pipe
   t1 = Thread.new { r.sysread(1) }
   t2 = Thread.new { r.sysread(1) }
-  sleep 0.1
+  sleep 0.01 until t1.stop? and t2.stop?
   w.write "a"
-  sleep 0.1
   w.write "a"
 }, '[ruby-dev:31866]'
 
 assert_finish 10, %q{
   begin
     require "io/nonblock"
-    r, w = IO.pipe
-    w.nonblock = true
-    w.write_nonblock("a" * 100000)
-    w.nonblock = false
-    t1 = Thread.new { w.write("b" * 4096) }
-    t2 = Thread.new { w.write("c" * 4096) }
-    sleep 0.5
-    r.sysread(4096).length
-    sleep 0.5
-    r.sysread(4096).length
-    t1.join
-    t2.join
-  rescue LoadError
+    require "timeout"
+    timeout(3) do
+      r, w = IO.pipe
+      w.nonblock?
+      w.nonblock = true
+      w.write_nonblock("a" * 100000)
+      w.nonblock = false
+      t1 = Thread.new { w.write("b" * 4096) }
+      t2 = Thread.new { w.write("c" * 4096) }
+      sleep 0.5
+      r.sysread(4096).length
+      sleep 0.5
+      r.sysread(4096).length
+      t1.join
+      t2.join
+    end
+  rescue LoadError, Timeout::Error, NotImplementedError
   end
 }, '[ruby-dev:32566]'
 
 assert_finish 1, %q{
   r, w = IO.pipe
   Thread.new {
-  w << "ab"
-  sleep 0.1
-  w << "ab"
+    w << "ab"
+    sleep 0.01
+    w << "ab"
   }
   r.gets("abab")
 }
@@ -70,27 +73,36 @@ assert_equal 'ok', %q{
   :ok
 }
 
+assert_equal 'ok', %q{
+  dup = STDIN.dup
+  dupfd = dup.fileno
+  dupfd == STDIN.dup.fileno ? :ng : :ok
+}, '[ruby-dev:46834]'
+
 assert_normal_exit %q{
   ARGF.set_encoding "foo"
 }
 
-50.times do
+10.times do
   assert_normal_exit %q{
     at_exit { p :foo }
 
     megacontent = "abc" * 12345678
     #File.open("megasrc", "w") {|f| f << megacontent }
 
-    Thread.new { sleep rand*0.2; Process.kill(:INT, $$) }
+    t0 = Thread.main
+    Thread.new { sleep 0.001 until t0.stop?; Process.kill(:INT, $$) }
 
     r1, w1 = IO.pipe
     r2, w2 = IO.pipe
     t1 = Thread.new { w1 << megacontent; w1.close }
-    t2 = Thread.new { r2.read }
+    t2 = Thread.new { r2.read; r2.close }
     IO.copy_stream(r1, w2) rescue nil
-    r2.close; w2.close
-    r1.close; w1.close
-  }, '', ["INT"] or break
+    w2.close
+    r1.close
+    t1.join
+    t2.join
+  }, 'megacontent-copy_stream', ["INT"], :timeout => 10 or break
 end
 
 assert_normal_exit %q{
diff --git a/bootstraptest/test_jump.rb b/bootstraptest/test_jump.rb
index 77467337c2..18a2737ea3 100644
--- a/bootstraptest/test_jump.rb
+++ b/bootstraptest/test_jump.rb
@@ -100,7 +100,7 @@ assert_equal %q{ok}, %q{
   def m
     yield
   end
-  
+
   m{
     begin
     ensure
@@ -146,15 +146,16 @@ assert_equal %q{131}, %q{
     end
   }
 }
-assert_equal %q{ok}, %q{
+assert_match %r{Invalid retry}, %q{
+STDERR.reopen(STDOUT)
 begin
   eval %q{
     1.times{
       retry
     }
   }
-rescue SyntaxError
-  :ok
+rescue SyntaxError => e
+  e.message
 end
 }
 assert_equal %q{3}, %q{
@@ -190,7 +191,7 @@ assert_equal %q{100}, %q{
       $i = 100
     end
   end
-  
+
   def iter
     yield
   end
@@ -216,7 +217,7 @@ assert_equal %q{1}, %q{
       return 1
     end
   end
-  
+
   m
 }
 assert_equal %q{1}, %q{
@@ -227,7 +228,7 @@ assert_equal %q{1}, %q{
       return 1
     end
   end
-  
+
   m
 }
 assert_equal 'ok', %q{
@@ -259,3 +260,55 @@ assert_normal_exit %q{
     end
   end
 }
+
+assert_normal_exit %q{
+  -> do
+    1.times do
+      begin
+        raise
+      rescue
+        return
+      end
+    end
+  end.call
+}
+
+assert_normal_exit %q{
+  while true
+    begin
+      raise
+      next
+    rescue
+    end
+    break
+  end
+}, '[ruby-core:28172]'
+
+assert_equal "true", %q{
+  class Object
+    def return_eigenclass
+      class << self
+        return self
+      end
+    end
+  end
+  s = "foo"
+  s.return_eigenclass == class << s; self; end
+}, '[ruby-core:21379]'
+
+assert_match %r{Invalid yield}, %q{
+STDERR.reopen(STDOUT)
+begin
+  eval %q{
+    class Object
+      def yield_eigenclass
+        class << self
+          yield self
+        end
+      end
+    end
+  }
+rescue SyntaxError => e
+  e.message
+end
+}
diff --git a/bootstraptest/test_literal.rb b/bootstraptest/test_literal.rb
index 8480c65308..9b3c10d519 100644
--- a/bootstraptest/test_literal.rb
+++ b/bootstraptest/test_literal.rb
@@ -15,17 +15,17 @@ assert_equal 'sym',             ':sym'
 assert_equal ':sym',            ':sym.inspect'
 assert_equal 'Symbol',          ':sym.class'
 assert_equal '1234',            '1234'
-assert_equal 'Fixnum',          '1234.class'
+assert_equal 'Integer',         '1234.class'
 assert_equal '1234',            '1_2_3_4'
-assert_equal 'Fixnum',          '1_2_3_4.class'
+assert_equal 'Integer',         '1_2_3_4.class'
 assert_equal '18',              '0x12'
-assert_equal 'Fixnum',          '0x12.class'
+assert_equal 'Integer',         '0x12.class'
 assert_equal '15',              '0o17'
-assert_equal 'Fixnum',          '0o17.class'
+assert_equal 'Integer',         '0o17.class'
 assert_equal '5',               '0b101'
-assert_equal 'Fixnum',          '0b101.class'
+assert_equal 'Integer',         '0b101.class'
 assert_equal '123456789012345678901234567890', '123456789012345678901234567890'
-assert_equal 'Bignum',          '123456789012345678901234567890.class'
+assert_equal 'Integer',         '123456789012345678901234567890.class'
 assert_equal '2.0',             '2.0'
 assert_equal 'Float',           '1.3.class'
 
@@ -82,7 +82,7 @@ assert_equal '0',               're = /test/; re =~ "test"'
 assert_equal '0',               'str = "test"; /test/ =~ str'
 assert_equal '0',               're = /test/; str = "test"; re =~ str'
 
-# dynacmi regexp
+# dynamic regexp
 assert_equal 'regexp',          %q(/re#{'ge'}xp/.source)
 assert_equal 'Regexp',          %q(/re#{'ge'}xp/.class)
 
@@ -97,7 +97,7 @@ assert_equal '[3]',             '[3].inspect'
 assert_equal '3',               'a = [3]; a[0]'
 assert_equal 'Array',           '[1,2].class'
 assert_equal '2',               '[1,2].size'
-assert_equal '[1, 2]',           '[1,2].inspect'
+assert_equal '[1, 2]',          '[1,2].inspect'
 assert_equal 'Array',           '[1,2,3,4,5].class'
 assert_equal '5',               '[1,2,3,4,5].size'
 assert_equal '[1, 2, 3, 4, 5]', '[1,2,3,4,5].inspect'
@@ -167,7 +167,7 @@ assert_equal 'a',               'r = ("a".."c"); r.begin'
 assert_equal 'c',               'r = ("a".."c"); r.end'
 
 assert_equal 'String',          '__FILE__.class'
-assert_equal 'Fixnum',          '__LINE__.class'
+assert_equal 'Integer',         '__LINE__.class'
 
 ###
 
@@ -192,3 +192,56 @@ assert_normal_exit %q{
   rescue
   end
 }, '[ruby-dev:34536]'
+
+assert_equal 'ok', %q{
+  "#{}""#{}ok"
+}, '[ruby-dev:38968]'
+
+assert_equal 'ok', %q{
+  "#{}o""#{}k""#{}"
+}, '[ruby-core:25284]'
+
+assert_equal 'ok', %q{ #  long array literal
+  x = nil
+  eval "a = [#{(1..10_000).map{'x'}.join(", ")}]"
+  :ok
+}
+
+assert_equal 'ok', %q{ #  long array literal (optimized)
+  eval "a = [#{(1..10_000).to_a.join(", ")}]"
+  :ok
+}
+
+assert_equal 'ok', %q{ #  long hash literal
+  x = nil
+  eval "a = {#{(1..10_000).map{|n| "#{n} => x"}.join(', ')}}"
+  :ok
+}
+
+assert_equal 'ok', %q{ #  long hash literal (optimized)
+  eval "a = {#{(1..10_000).map{|n| "#{n} => #{n}"}.join(', ')}}"
+  :ok
+}
+
+assert_equal 'ok', %q{ #  Bug #15536
+  eval <<-END
+    {
+      **{
+        a0: nil, a1: nil, a2: nil, a3: nil, a4: nil, a5: nil, a6: nil, a7: nil, a8: nil,
+      },
+      a0: nil, a1: nil, a2: nil, a3: nil, a4: nil, a5: nil, a6: nil, a7: nil, a8: nil,
+      **{
+        c: nil
+      },
+      b0: nil, b1: nil, b2: nil, b3: nil, b4: nil, b5: nil, b6: nil, b7: nil, b8: nil,
+      b9: nil, b10: nil, b11: nil, b12: nil, b13: nil, b14: nil, b15: nil, b16: nil,
+      b17: nil, b18: nil, b19: nil, b20: nil, b21: nil,
+    }
+  END
+  :ok
+}
+
+assert_equal 'ok', %q{
+  [print(:ok), exit] # void literal with side-effect
+  :dummy
+}
diff --git a/bootstraptest/test_literal_suffix.rb b/bootstraptest/test_literal_suffix.rb
new file mode 100644
index 0000000000..c36fa7078f
--- /dev/null
+++ b/bootstraptest/test_literal_suffix.rb
@@ -0,0 +1,54 @@
+# numbers with suffix
+assert_equal '0/1',             '0r'
+assert_equal 'Rational',        '0r.class'
+assert_equal '1/1',             '1r'
+assert_equal 'Rational',        '1r.class'
+assert_equal '-1/1',            '-1r'
+assert_equal 'Rational',        '(-1r).class'
+assert_equal '1/1',             '0x1r'
+assert_equal 'Rational',        '0x1r.class'
+assert_equal '1/1',             '0b1r'
+assert_equal 'Rational',        '0b1r.class'
+assert_equal '1/1',             '0d1r'
+assert_equal 'Rational',        '0d1r.class'
+assert_equal '1/1',             '0o1r'
+assert_equal 'Rational',        '0o1r.class'
+assert_equal '1/1',             '01r'
+assert_equal 'Rational',        '01r.class'
+assert_equal '6/5',             '1.2r'
+assert_equal 'Rational',        '1.2r.class'
+assert_equal '-6/5',            '-1.2r'
+assert_equal 'Rational',        '(-1.2r).class'
+assert_equal '0+0i',            '0i'
+assert_equal 'Complex',         '0i.class'
+assert_equal '0+1i',            '1i'
+assert_equal 'Complex',         '1i.class'
+assert_equal '0+1i',            '0x1i'
+assert_equal 'Complex',         '0x1i.class'
+assert_equal '0+1i',            '0b1i'
+assert_equal 'Complex',         '0b1i.class'
+assert_equal '0+1i',            '0d1i'
+assert_equal 'Complex',         '0d1i.class'
+assert_equal '0+1i',            '0o1i'
+assert_equal 'Complex',         '0o1i.class'
+assert_equal '0+1i',            '01i'
+assert_equal 'Complex',         '01i.class'
+assert_equal '0+1.2i',          '1.2i'
+assert_equal 'Complex',         '1.2i.class'
+assert_equal '0+1/1i',          '1ri'
+assert_equal 'Complex',         '1ri.class'
+assert_equal '0+6/5i',          '1.2ri'
+assert_equal 'Complex',         '1.2ri.class'
+assert_equal '0+10.0i',         '1e1i'
+assert_equal 'Complex',         '1e1i.class'
+assert_equal '1',               '1if true'
+assert_equal '1',               '1rescue nil'
+assert_equal '10000000000000000001/10000000000000000000',
+             '1.0000000000000000001r'
+
+assert_equal 'syntax error, unexpected local variable or method, expecting end-of-input',
+             %q{begin eval('1ir', nil, '', 0); rescue SyntaxError => e; e.message[/\A:(?:\d+:)? (.*)/, 1] end}
+assert_equal 'syntax error, unexpected local variable or method, expecting end-of-input',
+             %q{begin eval('1.2ir', nil, '', 0); rescue SyntaxError => e; e.message[/\A:(?:\d+:)? (.*)/, 1] end}
+assert_equal 'syntax error, unexpected local variable or method, expecting end-of-input',
+             %q{begin eval('1e1r', nil, '', 0); rescue SyntaxError => e; e.message[/\A:(?:\d+:)? (.*)/, 1] end}
diff --git a/bootstraptest/test_method.rb b/bootstraptest/test_method.rb
index 8953a0d4d1..3462aa9434 100644
--- a/bootstraptest/test_method.rb
+++ b/bootstraptest/test_method.rb
@@ -3,7 +3,7 @@ assert_equal '1',       'def m() 1 end; m()'
 assert_equal '1',       'def m(a) a end; m(1)'
 assert_equal '[1, 2]',  'def m(a,b) [a, b] end; m(1,2)'
 assert_equal '[1, 2, 3]', 'def m(a,b,c) [a, b, c] end; m(1,2,3)'
-assert_equal 'wrong number of arguments (1 for 0)', %q{
+assert_match /\Awrong number of arguments \(.*\b1\b.* 0\)\z/, %q{
   def m; end
   begin
     m(1)
@@ -12,7 +12,7 @@ assert_equal 'wrong number of arguments (1 for 0)', %q{
   end
 }
 
-assert_equal 'wrong number of arguments (0 for 1)', %q{
+assert_match /\Awrong number of arguments \(.*\b0\b.* 1\)\z/, %q{
   def m a; end
   begin
     m
@@ -402,6 +402,10 @@ m(1,2,*ary,&b)
 $result
 }
 
+# aset and splat
+assert_equal '4', %q{class Foo;def []=(a,b,c,d);end;end;Foo.new[1,*a=[2,3]]=4}
+assert_equal '4', %q{class Foo;def []=(a,b,c,d);end;end;def m(&blk)Foo.new[1,*a=[2,3],&blk]=4;end;m{}}
+
 # post test
 assert_equal %q{[1, 2, :o1, :o2, [], 3, 4, NilClass, nil, nil]}, %q{
 def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
@@ -882,50 +886,6 @@ class C0; def m *args; [:C0_m, args]; end; end
 class C1 < C0; def m a, o=:o; super; end; end
 ; C1.new.m 1, 2}
 
-assert_equal %q{[:ok, :ok, :ok, :ok, :ok, :ok, :ng, :ng]}, %q{
-  $ans = []
-  class Foo
-    def m
-    end
-  end
-
-  c1 = c2 = nil
-
-  lambda{
-    $SAFE = 4
-    c1 = Class.new{
-      def m
-      end
-    }
-    c2 = Class.new(Foo){
-      alias mm m
-    }
-  }.call
-
-  def test
-    begin
-      yield
-    rescue SecurityError
-      $ans << :ok
-    else
-      $ans << :ng
-    end
-  end
-
-  o1 = c1.new
-  o2 = c2.new
-  
-  test{o1.m}
-  test{o2.mm}
-  test{o1.send :m}
-  test{o2.send :mm}
-  test{o1.public_send :m}
-  test{o2.public_send :mm}
-  test{o1.method(:m).call}
-  test{o2.method(:mm).call}
-  $ans
-}
-
 assert_equal 'ok', %q{
   class C
     def x=(n)
@@ -950,34 +910,6 @@ assert_equal 'ok', %q{
 }, '[ruby-core:11998]'
 
 assert_equal 'ok', %q{
-  proc{
-    $SAFE = 2
-    class C
-      def m
-        :ok
-      end
-    end
-  }.call
-  C.new.m
-}, '[ruby-core:11998]'
-
-assert_equal 'ok', %q{
-  proc{
-    $SAFE = 3
-    class C
-      def m
-        :ng
-      end
-    end
-  }.call
-  begin
-    C.new.m
-  rescue SecurityError
-    :ok
-  end
-}, '[ruby-core:11998]'
-
-assert_equal 'ok', %q{
   class B
     def m() :fail end
   end
@@ -997,8 +929,8 @@ assert_equal 'ok', %q{
 
 assert_normal_exit %q{
   begin
-    Process.setrlimit(Process::RLIMIT_STACK, 4_202_496)
-    # FreeBSD fails this less than 4M + 8K bytes.
+    Process.setrlimit(Process::RLIMIT_STACK, 4_206_592)
+    # FreeBSD SEGVs this less than 4M + 12K bytes.
   rescue Exception
     exit
   end
@@ -1074,7 +1006,7 @@ assert_equal '[1, 2, [3, 4]]', %q{
   def regular(a, b, *c)
     [a, b, c]
   end
-  regular(*[], 1, *[], *[2, 3], *[], 4) 
+  regular(*[], 1, *[], *[2, 3], *[], 4)
 }, '[ruby-core:19413]'
 
 assert_equal '[1, [:foo, 3, 4, :foo]]', %q{
@@ -1093,7 +1025,7 @@ assert_equal '["B", "A"]', %q{
   end
 
   class B < A
-    define_method(:m) do    
+    define_method(:m) do
       ['B', super()]
     end
   end
@@ -1151,3 +1083,110 @@ assert_normal_exit %q{
     e.message == "undefined method `lalala!' for \"a\":String" ? :ok : :ng
   end
 }, '[ruby-core:22298]'
+
+assert_equal 'ok', %q{
+  "hello"[0] ||= "H"
+  "ok"
+}
+
+assert_equal 'ok', %q{
+  "hello"[0, 1] ||= "H"
+  "ok"
+}
+
+assert_equal 'ok', %q{
+  class C
+    define_method(:foo) do
+      C.class_eval { remove_method(:foo) }
+      super()
+    end
+  end
+  begin
+    C.new.foo
+  rescue NoMethodError
+    'ok'
+  end
+}
+assert_equal 'ok', %q{
+  [0][0, &proc{}] += 21
+  'ok'
+}, '[ruby-core:30534]'
+
+# should not cache when splat
+assert_equal 'ok', %q{
+  class C
+    attr_reader :a
+    def initialize
+      @a = 1
+    end
+  end
+
+  def m *args
+    C.new.a(*args)
+  end
+
+  m()
+  begin
+    m(1)
+  rescue ArgumentError
+    'ok'
+  end
+}
+
+assert_equal 'DC', %q{
+  $result = []
+
+  class C
+    def foo *args
+      $result << 'C'
+    end
+  end
+  class D
+    def foo *args
+      $result << 'D'
+    end
+  end
+
+  o1 = $o1 = C.new
+  o2 = $o2 = D.new
+
+  args = Object.new
+  def args.to_a
+    test1 $o2, nil
+    []
+  end
+  def test1 o, args
+    o.foo(*args)
+  end
+  test1 o1, args
+  $result.join
+}
+
+assert_equal 'DC', %q{
+  $result = []
+
+  class C
+    def foo *args
+      $result << 'C'
+    end
+  end
+  class D
+    def foo *args
+      $result << 'D'
+    end
+  end
+
+  o1 = $o1 = C.new
+  o2 = $o2 = D.new
+
+  block = Object.new
+  def block.to_proc
+    test2 $o2, %w(a, b, c), nil
+    Proc.new{}
+  end
+  def test2 o, args, block
+    o.foo(*args, &block)
+  end
+  test2 o1, [], block
+  $result.join
+}
diff --git a/bootstraptest/test_objectspace.rb b/bootstraptest/test_objectspace.rb
index 1a43d42017..63a8d99322 100644
--- a/bootstraptest/test_objectspace.rb
+++ b/bootstraptest/test_objectspace.rb
@@ -2,7 +2,8 @@ assert_normal_exit %q{
   eval("", TOPLEVEL_BINDING)
   minobj = ObjectSpace.to_enum(:each_object).min_by {|a| a.object_id }
   maxobj = ObjectSpace.to_enum(:each_object).max_by {|a| a.object_id }
-  minobj.object_id.upto(maxobj.object_id) {|id|
+  (((minobj.object_id-100)..(minobj.object_id+100))+
+   ((maxobj.object_id-100)..(maxobj.object_id+100))).each {|id|
     begin
       o = ObjectSpace._id2ref(id)
     rescue RangeError
@@ -31,3 +32,24 @@ assert_normal_exit %q{
     end
   }
 }, '[ruby-dev:31985]'
+
+assert_normal_exit %q{
+  ObjectSpace.define_finalizer("") do
+    Thread::Mutex.new.lock
+  end
+}, '[ruby-dev:44049]'
+
+assert_normal_exit %q{
+  ObjectSpace.define_finalizer("") do
+    Thread.new {}
+  end
+}, '[ruby-core:37858]'
+
+assert_equal 'ok', %q{
+  objects_and_ids = 1000.times.map { o = Object.new; [o, o.object_id] }
+  objects_and_ids.each { |expected, id|
+    actual = ObjectSpace._id2ref(id)
+    raise "expected #{expected.inspect}, got #{actual.inspect}" unless actual.equal?(expected)
+  }
+  'ok'
+}
diff --git a/bootstraptest/test_proc.rb b/bootstraptest/test_proc.rb
index 820dc1f764..637603243d 100644
--- a/bootstraptest/test_proc.rb
+++ b/bootstraptest/test_proc.rb
@@ -2,11 +2,11 @@ assert_equal %q{[1, 2, 3]}, %q{
   def getproc &b
     b
   end
-  
+
   def m
     yield
   end
-  
+
   m{
     i = 1
     m{
@@ -24,14 +24,14 @@ assert_equal %q{7}, %q{
   def make_proc(&b)
     b
   end
-  
+
   def make_closure
     a = 0
     make_proc{
       a+=1
     }
   end
-  
+
   cl = make_closure
   cl.call + cl.call * cl.call
 }
@@ -41,7 +41,7 @@ assert_equal %q{ok}, %q{
       :ok
     end
   end
-  
+
   def block
     C.method(:new).to_proc
   end
@@ -52,7 +52,7 @@ assert_equal %q{[0, 1, :last, 0, 2, :last]}, %q{
   def proc &b
     b
   end
-  
+
   pr = []
   proc{|i_b|
     p3 = proc{|j_b|
@@ -63,18 +63,18 @@ assert_equal %q{[0, 1, :last, 0, 2, :last]}, %q{
     p3.call(1)
     p3.call(2)
   }.call(0)
-  
+
   pr[0].call(:last).concat pr[1].call(:last)
 }
 assert_equal %q{12}, %q{
   def iter
     yield
   end
-  
+
   def getproc &b
     b
   end
-  
+
   iter{
     bvar = 3
     getproc{
@@ -87,11 +87,11 @@ assert_equal %q{200}, %q{
   def iter
     yield
   end
-  
+
   def getproc &b
     b
   end
-  
+
   loc1 = 0
   pr1 = iter{
     bl1 = 1
@@ -101,7 +101,7 @@ assert_equal %q{200}, %q{
       loc1 + bl1
     }
   }
-  
+
   pr2 = iter{
     bl1 = 1
     getproc{
@@ -110,7 +110,7 @@ assert_equal %q{200}, %q{
       loc1 + bl1
     }
   }
-  
+
   pr1.call; pr2.call
   pr1.call; pr2.call
   pr1.call; pr2.call
@@ -120,21 +120,21 @@ assert_equal %q{[1, 2]}, %q{
   def proc(&pr)
     pr
   end
-  
+
   def m
     a = 1
     m2{
       a
     }
   end
-  
+
   def m2
     b = 2
     proc{
       [yield, b]
     }
   end
-  
+
   pr = m
   x = ['a', 1,2,3,4,5,6,7,8,9,0,
             1,2,3,4,5,6,7,8,9,0,
@@ -147,14 +147,14 @@ assert_equal %q{1}, %q{
   def proc(&pr)
     pr
   end
-  
+
   def m
     a = 1
     m2{
       a
     }
   end
-  
+
   def m2
     b = 2
     proc{
@@ -224,19 +224,6 @@ assert_equal %q{[[nil, []], [1, []], [1, [2]], [1, [2, 3]]]}, %q{
   Proc.new{|a, *b| [a, b]}.call(1, 2, 3),
   ]
 }
-assert_equal %q{0}, %q{
-  pr = proc{
-    $SAFE
-  }
-  $SAFE = 1
-  pr.call
-}
-assert_equal %q{[1, 0]}, %q{
-  pr = proc{
-    $SAFE += 1
-  }
-  [pr.call, $SAFE]
-}
 assert_equal %q{1}, %q{
   def m(&b)
     b
@@ -380,8 +367,8 @@ assert_equal 'ok', %q{
 
 assert_equal 'ok', %q{
   class Foo
-    def call_it
-      p = Proc.new
+    def call_it(&block)
+      p = Proc.new(&block)
       p.call
     end
   end
@@ -420,9 +407,64 @@ assert_equal 'foo!', %q{
 }, 'Subclass of Proc'
 
 assert_equal 'ok', %q{
+  o = Object.new
+  def o.write(s); end
+  $stderr = o
   at_exit{
     print $!.message
   }
   raise "ok"
 }
 
+assert_equal 'ok', %q{
+  lambda do
+    class A
+      class B
+        proc{return :ng}.call
+      end
+    end
+  end.call
+  :ok
+}
+
+assert_equal 'ok', %q{
+  $proc = proc{return}
+  begin
+    lambda do
+      class A
+        class B
+          $proc.call
+        end
+      end
+    end.call
+    :ng
+  rescue LocalJumpError
+    :ok
+  end
+}
+
+assert_equal 'ok', %q{
+  def x
+    binding
+  end
+  b = x{|a| a }
+  b.eval('yield("ok")')
+}, '[Bug #5634]'
+
+assert_equal 'ok', %q{
+  def x
+    binding
+  end
+  eval("x { 'ok' }").eval "yield"
+}, '[Bug #5634]'
+
+assert_equal 'ok', %q{
+  def x
+    binding
+  end
+  def m
+    x{ 'ok' }
+  end
+  eval('yield', m)
+}, '[Bug #5634]'
+
diff --git a/bootstraptest/test_ractor.rb b/bootstraptest/test_ractor.rb
new file mode 100644
index 0000000000..7d920c31b5
--- /dev/null
+++ b/bootstraptest/test_ractor.rb
@@ -0,0 +1,1444 @@
+# Ractor.current returns a current ractor
+assert_equal 'Ractor', %q{
+  Ractor.current.class
+}
+
+# Ractor.new returns new Ractor
+assert_equal 'Ractor', %q{
+  Ractor.new{}.class
+}
+
+# Ractor.allocate is not supported
+assert_equal "[:ok, :ok]", %q{
+  rs = []
+  begin
+    Ractor.allocate
+  rescue => e
+    rs << :ok if e.message == 'allocator undefined for Ractor'
+  end
+
+  begin
+    Ractor.new{}.dup
+  rescue
+    rs << :ok if e.message == 'allocator undefined for Ractor'
+  end
+
+  rs
+}
+
+# A Ractor can have a name
+assert_equal 'test-name', %q{
+  r = Ractor.new name: 'test-name' do
+  end
+  r.name
+}
+
+# If Ractor doesn't have a name, Ractor#name returns nil.
+assert_equal 'nil', %q{
+  r = Ractor.new do
+  end
+  r.name.inspect
+}
+
+# Raises exceptions if initialize with an invalid name
+assert_equal 'ok', %q{
+  begin
+    r = Ractor.new(name: [{}]) {}
+  rescue TypeError => e
+    'ok'
+  end
+}
+
+# Ractor.new must call with a block
+assert_equal "must be called with a block", %q{
+  begin
+    Ractor.new
+  rescue ArgumentError => e
+    e.message
+  end
+}
+
+# Ractor#inspect
+# Return only id and status for main ractor
+assert_equal "#<Ractor:#1 running>", %q{
+  Ractor.current.inspect
+}
+
+# Return id, loc, and status for no-name ractor
+assert_match /^#<Ractor:#([^ ]*?) .+:[0-9]+ terminated>$/, %q{
+  r = Ractor.new { '' }
+  r.take
+  sleep 0.1 until r.inspect =~ /terminated/
+  r.inspect
+}
+
+# Return id, name, loc, and status for named ractor
+assert_match /^#<Ractor:#([^ ]*?) Test Ractor .+:[0-9]+ terminated>$/, %q{
+  r = Ractor.new(name: 'Test Ractor') { '' }
+  r.take
+  sleep 0.1 until r.inspect =~ /terminated/
+  r.inspect
+}
+
+# A return value of a Ractor block will be a message from the Ractor.
+assert_equal 'ok', %q{
+  # join
+  r = Ractor.new do
+    'ok'
+  end
+  r.take
+}
+
+# Passed arguments to Ractor.new will be a block parameter
+# The values are passed with Ractor-communication pass.
+assert_equal 'ok', %q{
+  # ping-pong with arg
+  r = Ractor.new 'ok' do |msg|
+    msg
+  end
+  r.take
+}
+
+# Pass multiple arguments to Ractor.new
+assert_equal 'ok', %q{
+  # ping-pong with two args
+  r =  Ractor.new 'ping', 'pong' do |msg, msg2|
+    [msg, msg2]
+  end
+  'ok' if r.take == ['ping', 'pong']
+}
+
+# Ractor#send passes an object with copy to a Ractor
+# and Ractor.receive in the Ractor block can receive the passed value.
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    msg = Ractor.receive
+  end
+  r.send 'ok'
+  r.take
+}
+
+# Ractor#receive_if can filter the message
+assert_equal '[2, 3, 1]', %q{
+  r = Ractor.new Ractor.current do |main|
+    main << 1
+    main << 2
+    main << 3
+  end
+  a = []
+  a << Ractor.receive_if{|msg| msg == 2}
+  a << Ractor.receive_if{|msg| msg == 3}
+  a << Ractor.receive
+}
+
+# Ractor#receive_if with break
+assert_equal '[2, [1, :break], 3]', %q{
+  r = Ractor.new Ractor.current do |main|
+    main << 1
+    main << 2
+    main << 3
+  end
+
+  a = []
+  a << Ractor.receive_if{|msg| msg == 2}
+  a << Ractor.receive_if{|msg| break [msg, :break]}
+  a << Ractor.receive
+}
+
+# Ractor#receive_if can't be called recursively
+assert_equal '[[:e1, 1], [:e2, 2]]', %q{
+  r = Ractor.new Ractor.current do |main|
+    main << 1
+    main << 2
+    main << 3
+  end
+
+  a = []
+
+  Ractor.receive_if do |msg|
+    begin
+      Ractor.receive
+    rescue Ractor::Error
+      a << [:e1, msg]
+    end
+    true # delete 1 from queue
+  end
+
+  Ractor.receive_if do |msg|
+    begin
+      Ractor.receive_if{}
+    rescue Ractor::Error
+      a << [:e2, msg]
+    end
+    true # delete 2 from queue
+  end
+
+  a #
+}
+
+# dtoa race condition
+assert_equal '[:ok, :ok, :ok]', %q{
+  n = 3
+  n.times.map{
+    Ractor.new{
+      10_000.times{ rand.to_s }
+      :ok
+    }
+  }.map(&:take)
+}
+
+# Ractor.make_shareable issue for locals in proc [Bug #18023]
+assert_equal '[:a, :b, :c, :d, :e]', %q{
+  v1, v2, v3, v4, v5 = :a, :b, :c, :d, :e
+  closure = Proc.new { [v1, v2, v3, v4, v5] }
+
+  Ractor.make_shareable(closure).call
+}
+
+# Ractor.make_shareable issue for locals in proc [Bug #18023]
+assert_equal '[:a, :b, :c, :d, :e, :f, :g]', %q{
+  a = :a
+  closure = -> {
+    b, c, d = :b, :c, :d
+    -> {
+      e, f, g = :e, :f, :g
+      -> { [a, b, c, d, e, f, g] }
+    }.call
+  }.call
+
+  Ractor.make_shareable(closure).call
+}
+
+###
+###
+# Ractor still has several memory corruption so skip huge number of tests
+if ENV['GITHUB_WORKFLOW'] &&
+   ENV['GITHUB_WORKFLOW'] == 'Compilations'
+   # ignore the follow
+else
+
+# Ractor.select(*ractors) receives a values from a ractors.
+# It is similar to select(2) and Go's select syntax.
+# The return value is [ch, received_value]
+assert_equal 'ok', %q{
+  # select 1
+  r1 = Ractor.new{'r1'}
+  r, obj = Ractor.select(r1)
+  'ok' if r == r1 and obj == 'r1'
+}
+
+# Ractor.select from two ractors.
+assert_equal '["r1", "r2"]', %q{
+  # select 2
+  r1 = Ractor.new{'r1'}
+  r2 = Ractor.new{'r2'}
+  rs = [r1, r2]
+  as = []
+  r, obj = Ractor.select(*rs)
+  rs.delete(r)
+  as << obj
+  r, obj = Ractor.select(*rs)
+  as << obj
+  as.sort #=> ["r1", "r2"]
+}
+
+# Ractor.select from multiple ractors.
+assert_equal 30.times.map { 'ok' }.to_s, %q{
+  def test n
+    rs = (1..n).map do |i|
+      Ractor.new(i) do |i|
+        "r#{i}"
+      end
+    end
+    as = []
+    all_rs = rs.dup
+
+    n.times{
+      r, obj = Ractor.select(*rs)
+      as << [r, obj]
+      rs.delete(r)
+    }
+
+    if as.map{|r, o| r.object_id}.sort == all_rs.map{|r| r.object_id}.sort &&
+       as.map{|r, o| o}.sort == (1..n).map{|i| "r#{i}"}.sort
+      'ok'
+    else
+      'ng'
+    end
+  end
+
+  30.times.map{|i|
+    test i
+  }
+} unless ENV['RUN_OPTS'] =~ /--jit-min-calls=5/ # This always fails with --jit-wait --jit-min-calls=5
+
+# Exception for empty select
+assert_match /specify at least one ractor/, %q{
+  begin
+    Ractor.select
+  rescue ArgumentError => e
+    e.message
+  end
+}
+
+# Outgoing port of a ractor will be closed when the Ractor is terminated.
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    'finish'
+  end
+
+  r.take
+  sleep 0.1 until r.inspect =~ /terminated/
+
+  begin
+    o = r.take
+  rescue Ractor::ClosedError
+    'ok'
+  else
+    "ng: #{o}"
+  end
+}
+
+# Raise Ractor::ClosedError when try to send into a terminated ractor
+assert_equal 'ok', %q{
+  r = Ractor.new do
+  end
+
+  r.take # closed
+  sleep 0.1 until r.inspect =~ /terminated/
+
+  begin
+    r.send(1)
+  rescue Ractor::ClosedError
+    'ok'
+  else
+    'ng'
+  end
+}
+
+# Raise Ractor::ClosedError when try to send into a closed actor
+assert_equal 'ok', %q{
+  r = Ractor.new { Ractor.receive }
+  r.close_incoming
+
+  begin
+    r.send(1)
+  rescue Ractor::ClosedError
+    'ok'
+  else
+    'ng'
+  end
+}
+
+# Raise Ractor::ClosedError when try to take from closed actor
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    Ractor.yield 1
+    Ractor.receive
+  end
+
+  r.close_outgoing
+  begin
+    r.take
+  rescue Ractor::ClosedError
+    'ok'
+  else
+    'ng'
+  end
+}
+
+# Can mix with Thread#interrupt and Ractor#take [Bug #17366]
+assert_equal 'err', %q{
+  Ractor.new{
+    t = Thread.current
+    begin
+      Thread.new{ t.raise "err" }.join
+    rescue => e
+      e.message
+    end
+  }.take
+}
+
+# Killed Ractor's thread yields nil
+assert_equal 'nil', %q{
+  Ractor.new{
+    t = Thread.current
+    Thread.new{ t.kill }.join
+  }.take.inspect #=> nil
+}
+
+# Ractor.yield raises Ractor::ClosedError when outgoing port is closed.
+assert_equal 'ok', %q{
+  r = Ractor.new Ractor.current do |main|
+    Ractor.receive
+    main << true
+    Ractor.yield 1
+  end
+
+  r.close_outgoing
+  r << true
+  Ractor.receive
+
+  begin
+    r.take
+  rescue Ractor::ClosedError
+    'ok'
+  else
+    'ng'
+  end
+}
+
+# Raise Ractor::ClosedError when try to send into a ractor with closed incoming port
+assert_equal 'ok', %q{
+  r = Ractor.new { Ractor.receive }
+  r.close_incoming
+
+  begin
+    r.send(1)
+  rescue Ractor::ClosedError
+    'ok'
+  else
+    'ng'
+  end
+}
+
+# A ractor with closed incoming port still can send messages out
+assert_equal '[1, 2]', %q{
+  r = Ractor.new do
+    Ractor.yield 1
+    2
+  end
+  r.close_incoming
+
+  [r.take, r.take]
+}
+
+# Raise Ractor::ClosedError when try to take from a ractor with closed outgoing port
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    Ractor.yield 1
+    Ractor.receive
+  end
+
+  sleep 0.01 # wait for Ractor.yield in r
+  r.close_outgoing
+  begin
+    r.take
+  rescue Ractor::ClosedError
+    'ok'
+  else
+    'ng'
+  end
+}
+
+# A ractor with closed outgoing port still can receive messages from incoming port
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    Ractor.receive
+  end
+
+  r.close_outgoing
+  begin
+    r.send(1)
+  rescue Ractor::ClosedError
+    'ng'
+  else
+    'ok'
+  end
+}
+
+# Ractor.main returns main ractor
+assert_equal 'true', %q{
+  Ractor.new{
+    Ractor.main
+  }.take == Ractor.current
+}
+
+# a ractor with closed outgoing port should terminate
+assert_equal 'ok', %q{
+  Ractor.new do
+    close_outgoing
+  end
+
+  true until Ractor.count == 1
+  :ok
+}
+
+# multiple Ractors can receive (wait) from one Ractor
+assert_equal '[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]', %q{
+  pipe = Ractor.new do
+    loop do
+      Ractor.yield Ractor.receive
+    end
+  end
+
+  RN = 10
+  rs = RN.times.map{|i|
+    Ractor.new pipe, i do |pipe, i|
+      msg = pipe.take
+      msg # ping-pong
+    end
+  }
+  RN.times{|i|
+    pipe << i
+  }
+  RN.times.map{
+    r, n = Ractor.select(*rs)
+    rs.delete r
+    n
+  }.sort
+}
+
+# Ractor.select also support multiple take, receive and yield
+assert_equal '[true, true, true]', %q{
+  RN = 10
+  CR = Ractor.current
+
+  rs = (1..RN).map{
+    Ractor.new do
+      CR.send 'send' + CR.take #=> 'sendyield'
+      'take'
+    end
+  }
+  received = []
+  take = []
+  yielded = []
+  until rs.empty?
+    r, v = Ractor.select(CR, *rs, yield_value: 'yield')
+    case r
+    when :receive
+      received << v
+    when :yield
+      yielded << v
+    else
+      take << v
+      rs.delete r
+    end
+  end
+  [received.all?('sendyield'), yielded.all?(nil), take.all?('take')]
+}
+
+# multiple Ractors can send to one Ractor
+assert_equal '[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]', %q{
+  pipe = Ractor.new do
+    loop do
+      Ractor.yield Ractor.receive
+    end
+  end
+
+  RN = 10
+  RN.times.map{|i|
+    Ractor.new pipe, i do |pipe, i|
+      pipe << i
+    end
+  }
+  RN.times.map{
+    pipe.take
+  }.sort
+}
+
+# an exception in a Ractor will be re-raised at Ractor#receive
+assert_equal '[RuntimeError, "ok", true]', %q{
+  r = Ractor.new do
+    raise 'ok' # exception will be transferred receiver
+  end
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    [e.cause.class,   #=> RuntimeError
+     e.cause.message, #=> 'ok'
+     e.ractor == r]   #=> true
+  end
+}
+
+# threads in a ractor will killed
+assert_equal '{:ok=>3}', %q{
+  Ractor.new Ractor.current do |main|
+    q = Queue.new
+    Thread.new do
+      q << true
+      loop{}
+    ensure
+      main << :ok
+    end
+
+    Thread.new do
+      q << true
+      while true
+      end
+    ensure
+      main << :ok
+    end
+
+    Thread.new do
+      q << true
+      sleep 1
+    ensure
+      main << :ok
+    end
+
+    # wait for the start of all threads
+    3.times{q.pop}
+  end
+
+  3.times.map{Ractor.receive}.tally
+}
+
+# unshareable object are copied
+assert_equal 'false', %q{
+  obj = 'str'.dup
+  r = Ractor.new obj do |msg|
+    msg.object_id
+  end
+
+  obj.object_id == r.take
+}
+
+# To copy the object, now Marshal#dump is used
+assert_equal "allocator undefined for Thread", %q{
+  obj = Thread.new{}
+  begin
+    r = Ractor.new obj do |msg|
+      msg
+    end
+  rescue TypeError => e
+    e.message #=> no _dump_data is defined for class Thread
+  else
+    'ng'
+  end
+}
+
+# send shareable and unshareable objects
+assert_equal "ok", %q{
+  echo_ractor = Ractor.new do
+    loop do
+      v = Ractor.receive
+      Ractor.yield v
+    end
+  end
+
+  class C; end
+  module M; end
+  S = Struct.new(:a, :b, :c, :d)
+
+  shareable_objects = [
+    true,
+    false,
+    nil,
+    1,
+    1.1,    # Float
+    1+2r,   # Rational
+    3+4i,   # Complex
+    2**128, # Bignum
+    :sym,   # Symbol
+    'xyzzy'.to_sym, # dynamic symbol
+    'frozen'.freeze, # frozen String
+    /regexp/, # regexp literal
+    /reg{true}exp/.freeze, # frozen dregexp
+    [1, 2].freeze,   # frozen Array which only refers to shareable
+    {a: 1}.freeze,   # frozen Hash which only refers to shareable
+    [{a: 1}.freeze, 'str'.freeze].freeze, # nested frozen container
+    S.new(1, 2).freeze, # frozen Struct
+    S.new(1, 2, 3, 4).freeze, # frozen Struct
+    (1..2), # Range on Struct
+    (1..),  # Range on Struct
+    (..1),  # Range on Struct
+    C, # class
+    M, # module
+    Ractor.current, # Ractor
+  ]
+
+  unshareable_objects = [
+    'mutable str'.dup,
+    [:array],
+    {hash: true},
+    S.new(1, 2),
+    S.new(1, 2, 3, 4),
+    S.new("a", 2).freeze, # frozen, but refers to an unshareable object
+  ]
+
+  results = []
+
+  shareable_objects.map{|o|
+    echo_ractor << o
+    o2 = echo_ractor.take
+    results << "#{o} is copied" unless o.object_id == o2.object_id
+  }
+
+  unshareable_objects.map{|o|
+    echo_ractor << o
+    o2 = echo_ractor.take
+    results << "#{o.inspect} is not copied" if o.object_id == o2.object_id
+  }
+
+  if results.empty?
+    :ok
+  else
+    results.inspect
+  end
+}
+
+# frozen Objects are shareable
+assert_equal [false, true, false].inspect, %q{
+  class C
+    def initialize freeze
+      @a = 1
+      @b = :sym
+      @c = 'frozen_str'
+      @c.freeze if freeze
+      @d = true
+    end
+  end
+
+  def check obj1
+    obj2 = Ractor.new obj1 do |obj|
+      obj
+    end.take
+
+    obj1.object_id == obj2.object_id
+  end
+
+  results = []
+  results << check(C.new(true))         # false
+  results << check(C.new(true).freeze)  # true
+  results << check(C.new(false).freeze) # false
+}
+
+# move example2: String
+# touching moved object causes an error
+assert_equal 'hello world', %q{
+  # move
+  r = Ractor.new do
+    obj = Ractor.receive
+    obj << ' world'
+  end
+
+  str = 'hello'
+  r.send str, move: true
+  modified = r.take
+
+  begin
+    str << ' exception' # raise Ractor::MovedError
+  rescue Ractor::MovedError
+    modified #=> 'hello world'
+  else
+    raise 'unreachable'
+  end
+}
+
+# move example2: Array
+assert_equal '[0, 1]', %q{
+  r = Ractor.new do
+    ary = Ractor.receive
+    ary << 1
+  end
+
+  a1 = [0]
+  r.send a1, move: true
+  a2 = r.take
+  begin
+    a1 << 2 # raise Ractor::MovedError
+  rescue Ractor::MovedError
+    a2.inspect
+  end
+}
+
+# move with yield
+assert_equal 'hello', %q{
+  r = Ractor.new do
+    Thread.current.report_on_exception = false
+    obj = 'hello'
+    Ractor.yield obj, move: true
+    obj << 'world'
+  end
+
+  str = r.take
+  begin
+    r.take
+  rescue Ractor::RemoteError
+    str #=> "hello"
+  end
+}
+
+# yield/move should not make moved object when the yield is not succeeded
+assert_equal '"str"', %q{
+  R = Ractor.new{}
+  M = Ractor.current
+  r = Ractor.new do
+    s = 'str'
+    selected_r, v = Ractor.select R, yield_value: s, move: true
+    raise if selected_r != R # taken from R
+    M.send s.inspect # s should not be a moved object
+  end
+
+  Ractor.receive
+}
+
+# yield/move can fail
+assert_equal "allocator undefined for Thread", %q{
+  r = Ractor.new do
+    obj = Thread.new{}
+    Ractor.yield obj
+  rescue => e
+    e.message
+  end
+  r.take
+}
+
+# Access to global-variables are prohibited
+assert_equal 'can not access global variables $gv from non-main Ractors', %q{
+  $gv = 1
+  r = Ractor.new do
+    $gv
+  end
+
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# Access to global-variables are prohibited
+assert_equal 'can not access global variables $gv from non-main Ractors', %q{
+  r = Ractor.new do
+    $gv = 1
+  end
+
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# $stdin,out,err is Ractor local, but shared fds
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    [$stdin, $stdout, $stderr].map{|io|
+      [io.object_id, io.fileno]
+    }
+  end
+
+  [$stdin, $stdout, $stderr].zip(r.take){|io, (oid, fno)|
+    raise "should not be different object" if io.object_id == oid
+    raise "fd should be same" unless io.fileno == fno
+  }
+  'ok'
+}
+
+# $stdin,out,err belong to Ractor
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    $stdin.itself
+    $stdout.itself
+    $stderr.itself
+    'ok'
+  end
+
+  r.take
+}
+
+# $DEBUG, $VERBOSE are Ractor local
+assert_equal 'true', %q{
+  $DEBUG = true
+  $VERBOSE = true
+
+  def ractor_local_globals
+    /a(b)(c)d/ =~ 'abcd' # for $~
+    `echo foo` unless  /solaris/ =~ RUBY_PLATFORM
+
+    {
+     # ractor-local (derived from created ractor): debug
+     '$DEBUG' => $DEBUG,
+     '$-d' => $-d,
+
+     # ractor-local (derived from created ractor): verbose
+     '$VERBOSE' => $VERBOSE,
+     '$-w' => $-w,
+     '$-W' => $-W,
+     '$-v' => $-v,
+
+     # process-local (readonly): other commandline parameters
+     '$-p' => $-p,
+     '$-l' => $-l,
+     '$-a' => $-a,
+
+     # process-local (readonly): getpid
+     '$$'  => $$,
+
+     # thread local: process result
+     '$?'  => $?,
+
+     # scope local: match
+     '$~'  => $~.inspect,
+     '$&'  => $&,
+     '$`'  => $`,
+     '$\''  => $',
+     '$+'  => $+,
+     '$1'  => $1,
+
+     # scope local: last line
+     '$_' => $_,
+
+     # scope local: last backtrace
+     '$@' => $@,
+     '$!' => $!,
+
+     # ractor local: stdin, out, err
+     '$stdin'  => $stdin.inspect,
+     '$stdout' => $stdout.inspect,
+     '$stderr' => $stderr.inspect,
+    }
+  end
+
+  h = Ractor.new do
+    ractor_local_globals
+  end.take
+  ractor_local_globals == h #=> true
+}
+
+# selfs are different objects
+assert_equal 'false', %q{
+  r = Ractor.new do
+    self.object_id
+  end
+  r.take == self.object_id #=> false
+}
+
+# self is a Ractor instance
+assert_equal 'true', %q{
+  r = Ractor.new do
+    self.object_id
+  end
+  r.object_id == r.take #=> true
+}
+
+# given block Proc will be isolated, so can not access outer variables.
+assert_equal 'ArgumentError', %q{
+  begin
+    a = true
+    r = Ractor.new do
+      a
+    end
+  rescue => e
+    e.class
+  end
+}
+
+# ivar in shareable-objects are not allowed to access from non-main Ractor
+assert_equal 'can not access instance variables of classes/modules from non-main Ractors', %q{
+  class C
+    @iv = 'str'
+  end
+
+  r = Ractor.new do
+    class C
+      p @iv
+    end
+  end
+
+
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# ivar in shareable-objects are not allowed to access from non-main Ractor
+assert_equal 'can not access instance variables of shareable objects from non-main Ractors', %q{
+  shared = Ractor.new{}
+  shared.instance_variable_set(:@iv, 'str')
+
+  r = Ractor.new shared do |shared|
+    p shared.instance_variable_get(:@iv)
+  end
+
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# ivar in shareable-objects are not allowed to access from non-main Ractor, by @iv (get)
+assert_equal 'can not access instance variables of shareable objects from non-main Ractors', %q{
+  class Ractor
+    def setup
+      @foo = ''
+    end
+
+    def foo
+      @foo
+    end
+  end
+
+  shared = Ractor.new{}
+  shared.setup
+
+  r = Ractor.new shared do |shared|
+    p shared.foo
+  end
+
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# ivar in shareable-objects are not allowed to access from non-main Ractor, by @iv (set)
+assert_equal 'can not access instance variables of shareable objects from non-main Ractors', %q{
+  class Ractor
+    def setup
+      @foo = ''
+    end
+  end
+
+  shared = Ractor.new{}
+
+  r = Ractor.new shared do |shared|
+    p shared.setup
+  end
+
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# But a shareable object is frozen, it is allowed to access ivars from non-main Ractor
+assert_equal '11', %q{
+  [Object.new, [], ].map{|obj|
+    obj.instance_variable_set('@a', 1)
+    Ractor.make_shareable obj = obj.freeze
+
+    Ractor.new obj do |obj|
+      obj.instance_variable_get('@a')
+    end.take.to_s
+  }.join
+}
+
+# cvar in shareable-objects are not allowed to access from non-main Ractor
+assert_equal 'can not access class variables from non-main Ractors', %q{
+  class C
+    @@cv = 'str'
+  end
+
+  r = Ractor.new do
+    class C
+      p @@cv
+    end
+  end
+
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# Getting non-shareable objects via constants by other Ractors is not allowed
+assert_equal 'can not access non-shareable objects in constant C::CONST by non-main Ractor.', %q{
+  class C
+    CONST = 'str'
+  end
+  r = Ractor.new do
+    C::CONST
+  end
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# Constant cache should care about non-sharable constants
+assert_equal "can not access non-shareable objects in constant Object::STR by non-main Ractor.", %q{
+  STR = "hello"
+  def str; STR; end
+  s = str() # fill const cache
+  begin
+    Ractor.new{ str() }.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# Setting non-shareable objects into constants by other Ractors is not allowed
+assert_equal 'can not set constants with non-shareable objects by non-main Ractors', %q{
+  class C
+  end
+  r = Ractor.new do
+    C::CONST = 'str'
+  end
+  begin
+    r.take
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+# define_method is not allowed
+assert_equal "defined in a different Ractor", %q{
+  str = "foo"
+  define_method(:buggy){|i| str << "#{i}"}
+  begin
+    Ractor.new{buggy(10)}.take
+  rescue => e
+    e.cause.message
+  end
+}
+
+# Immutable Array and Hash are shareable, so it can be shared with constants
+assert_equal '[1000, 3]', %q{
+  A = Array.new(1000).freeze # [nil, ...]
+  H = {a: 1, b: 2, c: 3}.freeze
+
+  Ractor.new{ [A.size, H.size] }.take
+}
+
+# Ractor.count
+assert_equal '[1, 4, 3, 2, 1]', %q{
+  counts = []
+  counts << Ractor.count
+  ractors = (1..3).map { Ractor.new { Ractor.receive } }
+  counts << Ractor.count
+
+  ractors[0].send('End 0').take
+  sleep 0.1 until ractors[0].inspect =~ /terminated/
+  counts << Ractor.count
+
+  ractors[1].send('End 1').take
+  sleep 0.1 until ractors[1].inspect =~ /terminated/
+  counts << Ractor.count
+
+  ractors[2].send('End 2').take
+  sleep 0.1 until ractors[2].inspect =~ /terminated/
+  counts << Ractor.count
+
+  counts.inspect
+}
+
+# ObjectSpace.each_object can not handle unshareable objects with Ractors
+assert_equal '0', %q{
+  Ractor.new{
+    n = 0
+    ObjectSpace.each_object{|o| n += 1 unless Ractor.shareable?(o)}
+    n
+  }.take
+}
+
+# ObjectSpace._id2ref can not handle unshareable objects with Ractors
+assert_equal 'ok', %q{
+  s = 'hello'
+
+  Ractor.new s.object_id do |id ;s|
+    begin
+      s = ObjectSpace._id2ref(id)
+    rescue => e
+      :ok
+    end
+  end.take
+}
+
+# Ractor.make_shareable(obj)
+assert_equal 'true', %q{
+  class C
+    def initialize
+      @a = 'foo'
+      @b = 'bar'
+    end
+
+    def freeze
+      @c = [:freeze_called]
+      super
+    end
+
+    attr_reader :a, :b, :c
+  end
+  S = Struct.new(:s1, :s2)
+  str = "hello"
+  str.instance_variable_set("@iv", "hello")
+  /a/ =~ 'a'
+  m = $~
+  class N < Numeric
+    def /(other)
+      1
+    end
+  end
+  ary = []; ary << ary
+
+  a = [[1, ['2', '3']],
+       {Object.new => "hello"},
+       C.new,
+       S.new("x", "y"),
+       ("a".."b"),
+       str,
+       ary,             # cycle
+       /regexp/,
+       /#{'r'.upcase}/,
+       m,
+       Complex(N.new,0),
+       Rational(N.new,0),
+       true,
+       false,
+       nil,
+       1, 1.2, 1+3r, 1+4i, # Numeric
+  ]
+  Ractor.make_shareable(a)
+
+  # check all frozen
+  a.each{|o|
+    raise o.inspect unless o.frozen?
+
+    case o
+    when C
+      raise o.a.inspect unless o.a.frozen?
+      raise o.b.inspect unless o.b.frozen?
+      raise o.c.inspect unless o.c.frozen? && o.c == [:freeze_called]
+    when Rational
+      raise o.numerator.inspect unless o.numerator.frozen?
+    when Complex
+      raise o.real.inspect unless o.real.frozen?
+    when Array
+      if o[0] == 1
+        raise o[1][1].inspect unless o[1][1].frozen?
+      end
+    when Hash
+      o.each{|k, v|
+        raise k.inspect unless k.frozen?
+        raise v.inspect unless v.frozen?
+      }
+    end
+  }
+
+  Ractor.shareable?(a)
+}
+
+# Ractor.make_shareable(obj) doesn't freeze shareable objects
+assert_equal 'true', %q{
+  r = Ractor.new{}
+  Ractor.make_shareable(a = [r])
+  [a.frozen?, a[0].frozen?] == [true, false]
+}
+
+# Ractor.make_shareable(a_proc) makes a proc shareable.
+assert_equal 'true', %q{
+  a = [1, [2, 3], {a: "4"}]
+  pr = Proc.new do
+    a
+  end
+  Ractor.make_shareable(a) # referred value should be shareable
+  Ractor.make_shareable(pr)
+  Ractor.shareable?(pr)
+}
+
+# Ractor.shareable?(recursive_objects)
+assert_equal '[false, false]', %q{
+  y = []
+  x = [y, {}].freeze
+  y << x
+  y.freeze
+  [Ractor.shareable?(x), Ractor.shareable?(y)]
+}
+
+# Ractor.make_shareable(recursive_objects)
+assert_equal '[:ok, false, false]', %q{
+  o = Object.new
+  def o.freeze; raise; end
+  y = []
+  x = [y, o].freeze
+  y << x
+  y.freeze
+  [(Ractor.make_shareable(x) rescue :ok), Ractor.shareable?(x), Ractor.shareable?(y)]
+}
+
+# Ractor.make_shareable with Class/Module
+assert_equal '[C, M]', %q{
+  class C; end
+  module M; end
+
+  Ractor.make_shareable(ary = [C, M])
+}
+
+# define_method() can invoke different Ractor's proc if the proc is shareable.
+assert_equal '1', %q{
+  class C
+    a = 1
+    define_method "foo", Ractor.make_shareable(Proc.new{ a })
+    a = 2
+  end
+
+  Ractor.new{ C.new.foo }.take
+}
+
+# Ractor.make_shareable(a_proc) makes a proc shareable.
+assert_equal 'can not make a Proc shareable because it accesses outer variables (a).', %q{
+  a = b = nil
+  pr = Proc.new do
+    c = b # assign to a is okay because c is block local variable
+          # reading b is okay
+    a = b # assign to a is not allowed #=> Ractor::Error
+  end
+
+  begin
+    Ractor.make_shareable(pr)
+  rescue => e
+    e.message
+  end
+}
+
+# Ractor.make_shareable(obj, copy: true) makes copied shareable object.
+assert_equal '[false, false, true, true]', %q{
+  r = []
+  o1 = [1, 2, ["3"]]
+
+  o2 = Ractor.make_shareable(o1, copy: true)
+  r << Ractor.shareable?(o1) # false
+  r << (o1.object_id == o2.object_id) # false
+
+  o3 = Ractor.make_shareable(o1)
+  r << Ractor.shareable?(o1) # true
+  r << (o1.object_id == o3.object_id) # false
+  r
+}
+
+# TracePoint with normal Proc should be Ractor local
+assert_equal '[4, 8]', %q{
+  rs = []
+  TracePoint.new(:line){|tp| rs << tp.lineno if tp.path == __FILE__}.enable do
+    Ractor.new{ # line 4
+      a = 1
+      b = 2
+    }.take
+    c = 3       # line 8
+  end
+  rs
+}
+
+# Ractor deep copies frozen objects (ary)
+assert_equal '[true, false]', %q{
+  Ractor.new([[]].freeze) { |ary|
+    [ary.frozen?, ary.first.frozen? ]
+  }.take
+}
+
+# Ractor deep copies frozen objects (str)
+assert_equal '[true, false]', %q{
+  s = String.new.instance_eval { @x = []; freeze}
+  Ractor.new(s) { |s|
+    [s.frozen?, s.instance_variable_get(:@x).frozen?]
+  }.take
+}
+
+# Can not trap with not isolated Proc on non-main ractor
+assert_equal '[:ok, :ok]', %q{
+  a = []
+  Ractor.new{
+    trap(:INT){p :ok}
+  }.take
+  a << :ok
+
+  begin
+    Ractor.new{
+      s = 'str'
+      trap(:INT){p s}
+    }.take
+  rescue => Ractor::RemoteError
+    a << :ok
+  end
+}
+
+# Ractor-local storage
+assert_equal '[nil, "b", "a"]', %q{
+  ans = []
+  Ractor.current[:key] = 'a'
+  r = Ractor.new{
+    Ractor.yield self[:key]
+    self[:key] = 'b'
+    self[:key]
+  }
+  ans << r.take
+  ans << r.take
+  ans << Ractor.current[:key]
+}
+
+###
+### Synchronization tests
+###
+
+N = 100_000
+
+# fstring pool
+assert_equal "#{N}#{N}", %Q{
+  N = #{N}
+  2.times.map{
+    Ractor.new{
+      N.times{|i| -(i.to_s)}
+    }
+  }.map{|r| r.take}.join
+}
+
+# enc_table
+assert_equal "#{N/10}", %Q{
+  Ractor.new do
+    loop do
+      Encoding.find("test-enc-#{rand(5_000)}").inspect
+    rescue ArgumentError => e
+    end
+  end
+
+  src = Encoding.find("UTF-8")
+  #{N/10}.times{|i|
+    src.replicate("test-enc-\#{i}")
+  }
+}
+
+# Generic ivtbl
+n = N/2
+assert_equal "#{n}#{n}", %Q{
+  2.times.map{
+    Ractor.new do
+      #{n}.times do
+        obj = ''
+        obj.instance_variable_set("@a", 1)
+        obj.instance_variable_set("@b", 1)
+        obj.instance_variable_set("@c", 1)
+        obj.instance_variable_defined?("@a")
+      end
+    end
+  }.map{|r| r.take}.join
+}
+
+# NameError
+assert_equal "ok", %q{
+  begin
+    bar
+  rescue => err
+  end
+  begin
+    Ractor.new{} << err
+  rescue TypeError
+    'ok'
+  end
+}
+
+# Can yield back values while GC is sweeping [Bug #18117]
+assert_equal "ok", %q{
+  workers = (0...8).map do
+    Ractor.new do
+      loop do
+        10_000.times.map { Object.new }
+        Ractor.yield Time.now
+      end
+    end
+  end
+
+  1_000.times { idle_worker, tmp_reporter = Ractor.select(*workers) }
+  "ok"
+}
+
+end # if !ENV['GITHUB_WORKFLOW']
diff --git a/bootstraptest/test_string.rb b/bootstraptest/test_string.rb
new file mode 100644
index 0000000000..849dcd45b0
--- /dev/null
+++ b/bootstraptest/test_string.rb
@@ -0,0 +1,3 @@
+assert_normal_exit %q{
+  inspect.clear
+}, '[ruby-core:68110]'
diff --git a/bootstraptest/test_syntax.rb b/bootstraptest/test_syntax.rb
index a9005a4292..fa27bf2aeb 100644
--- a/bootstraptest/test_syntax.rb
+++ b/bootstraptest/test_syntax.rb
@@ -110,7 +110,7 @@ assert_equal %q{100}, %q{
     end
     return arg
   end
-  
+
   test(100)
 }
 assert_equal %q{ok}, %q{
@@ -169,7 +169,7 @@ assert_equal %q{[:false, :false, :false, :false, :false, :false, :false, :false,
       res
     end
   end
-  
+
   def each_test
     conds = make_perm(['fv', 'tv'], 3)
     bangs = make_perm(['', '!'], 3)
@@ -184,10 +184,10 @@ assert_equal %q{[:false, :false, :false, :false, :false, :false, :false, :false,
       }
     }
   end
-  
+
   fv = false
   tv = true
-  
+
   $ans = []
   each_test{|syn, conds, bangs, exprs|
     c1, c2, c3 = conds
@@ -268,8 +268,10 @@ assert_equal %q{}, %q{
   defined?(@@a)
 }
 assert_equal %q{class variable}, %q{
-  @@a = 1
-  defined?(@@a)
+  class A
+    @@a = 1
+    defined?(@@a)
+  end
 }
 assert_equal %q{}, %q{
   defined?($a)
@@ -376,6 +378,8 @@ assert_equal %q{1}, %q{1 or 2 or 3 or 4}
 assert_equal %q{1}, %q{1 or false or 3 or 4}
 assert_equal %q{2}, %q{nil or 2 or 3 or 4}
 assert_equal %q{2}, %q{false or 2 or 3 or 4}
+assert_equal %q{1}, %q{if true && ""; then 1; end}
+assert_equal %q{1}, %q{if nil || true; then 1; end}
 assert_equal %q{false}, %q{nil or false or nil or false}
 assert_equal %q{elseng}, %q{
   case
@@ -529,7 +533,7 @@ def assert_syntax_error expected, code, message = ''
 end
 assert_syntax_error "unterminated string meets end of file", '().."', '[ruby-dev:29732]'
 assert_equal %q{[]}, %q{$&;[]}, '[ruby-dev:31068]'
-assert_syntax_error "syntax error, unexpected tSTAR, expecting '}'", %q{{*0}}, '[ruby-dev:31072]'
+assert_syntax_error "syntax error, unexpected *, expecting '}'", %q{{*0}}, '[ruby-dev:31072]'
 assert_syntax_error "`@0' is not allowed as an instance variable name", %q{@0..0}, '[ruby-dev:31095]'
 assert_syntax_error "identifier $00 is not valid to get", %q{$00..0}, '[ruby-dev:31100]'
 assert_syntax_error "identifier $00 is not valid to set", %q{0..$00=1}
@@ -541,7 +545,7 @@ assert_equal %q{1}, %q{
 assert_syntax_error "Can't set variable $1", %q{0..$1=1}, '[ruby-dev:31118]'
 assert_valid_syntax %q{1.times{1+(1&&next)}}, '[ruby-dev:31119]'
 assert_valid_syntax %q{x=-1;loop{x+=1&&redo if (x+=1).zero?}}, '[ruby-dev:31119]'
-assert_syntax_error %q{syntax error, unexpected $end}, %q{!}, '[ruby-dev:31243]'
+assert_syntax_error %q{syntax error, unexpected end-of-input}, %q{!}, '[ruby-dev:31243]'
 assert_equal %q{[nil]}, %q{[()]}, '[ruby-dev:31252]'
 assert_equal %q{true}, %q{!_=()}, '[ruby-dev:31263]'
 assert_equal 'ok', %q{while true; redo; end if 1 == 2; :ok}, '[ruby-dev:31360]'
@@ -695,7 +699,7 @@ assert_equal 'ok', %q{
   while true
     counter -= 1
     break if counter == 0
-    next 
+    next
     redo
   end
   :ok
@@ -706,7 +710,7 @@ assert_equal 'ok', %q{
   while true
     counter -= 1
     break if counter == 0
-    next 
+    next
     "#{ redo }"
   end
   :ok
@@ -828,3 +832,75 @@ assert_normal_exit %q{
   p a.compact!
 }
 
+assert_equal 'ok', %q{
+  "#{}""#{}ok"
+}, '[ruby-dev:38968]'
+
+
+assert_equal 'ok', %q{
+  "o" "#{}k"
+}, '[ruby-dev:38980]'
+
+bug2415 = '[ruby-core:26961]'
+assert_normal_exit %q{
+  0.times do
+    0.times do
+      def x(a=1, b, *rest); nil end
+    end
+  end
+}, bug2415
+
+assert_normal_exit %q{
+  0.times do
+    0.times do
+      def x@; nil end
+    end
+  end
+}, bug2415
+
+assert_normal_exit %q{
+  0.times do
+    0.times do
+      def x(a = 0.times do
+              def y(a=1, b, *rest); nil; end
+            end)
+        nil
+      end
+    end
+  end
+}, bug2415
+
+assert_normal_exit %q{
+  0.times do
+    0.times do
+      def x(a = 0.times do
+              def x@; nil; end
+            end)
+        nil
+      end
+    end
+  end
+}, bug2415
+
+assert_normal_exit %q{
+  a {
+    b {|c.d| }
+    e
+  }
+}, '[ruby-dev:39861]'
+
+bug1240 = '[ruby-core:22637]'
+assert_valid_syntax('x y { "#{}".z { } }', bug1240)
+assert_valid_syntax('x y { "#{}".z do end }', bug1240)
+
+assert_valid_syntax('y "#{a 1}" do end', '[ruby-core:29579]')
+assert_normal_exit %q{
+  def foo(&block)
+    yield
+  end
+
+  foo do
+    s = defined?(raise + 1)
+    Class
+  end
+}, '[ruby-core:30293]'
diff --git a/bootstraptest/test_thread.rb b/bootstraptest/test_thread.rb
index 54544df45e..38a55ff229 100644
--- a/bootstraptest/test_thread.rb
+++ b/bootstraptest/test_thread.rb
@@ -1,4 +1,14 @@
-# Thread and Fiber
+show_limit %q{
+  threads = []
+  begin
+    threads << Thread.new{sleep}
+
+    raise Exception, "skipping" if threads.count >= 10_000
+  rescue Exception => error
+    puts "Thread count: #{threads.count} (#{error})"
+    break
+  end while true
+} if false # disable to pass CI
 
 assert_equal %q{ok}, %q{
   Thread.new{
@@ -10,7 +20,8 @@ assert_equal %q{ok}, %q{
     :ok
   }.value
 }
-assert_equal %q{20100}, %q{
+assert_equal %q{ok}, %q{
+begin
   v = 0
   (1..200).map{|i|
     Thread.new{
@@ -19,10 +30,14 @@ assert_equal %q{20100}, %q{
   }.each{|t|
     v += t.value
   }
-  v
+  v == 20100 ? :ok : v
+rescue ThreadError => e
+  :ok if /can't create Thread/ =~ e.message
+end
 }
-assert_equal %q{5000}, %q{
-  5000.times{|e|
+assert_equal %q{ok}, %q{
+begin
+  :ok if 5000 == 5000.times{|e|
     (1..2).map{
       Thread.new{
       }
@@ -30,9 +45,13 @@ assert_equal %q{5000}, %q{
       e.join()
     }
   }
+rescue ThreadError => e
+  /can't create Thread/ =~ e.message ? :ok : e.message
+end
 }
-assert_equal %q{5000}, %q{
-  5000.times{|e|
+assert_equal %q{ok}, %q{
+begin
+  :ok if 5000 == 5000.times{|e|
     (1..2).map{
       Thread.new{
       }
@@ -40,14 +59,21 @@ assert_equal %q{5000}, %q{
       e.join(1000000000)
     }
   }
+rescue ThreadError => e
+  /can't create Thread/ =~ e.message ? :ok : e.message
+end
 }
-assert_equal %q{5000}, %q{
-  5000.times{
+assert_equal %q{ok}, %q{
+begin
+  :ok if 5000 == 5000.times{
     t = Thread.new{}
     while t.alive?
       Thread.pass
     end
   }
+rescue NoMemoryError
+  :ok
+end
 }
 assert_equal %q{100}, %q{
   100.times{
@@ -77,7 +103,7 @@ assert_equal %q{ok}, %q{
       ans = :ok
     end
   }
-  Thread.pass
+  Thread.pass until t.stop?
   t.kill
   t.join
   ans
@@ -174,9 +200,9 @@ assert_equal %q{[true, nil, true]}, %q{
   $a = $~
   Thread.new{
     $b = $~
-    /a/ =~ 'a'
+    /b/ =~ 'b'
     $c = $~
-  }
+  }.join
   $d = $~
   [$a == $d, $b, $c != $d]
 }
@@ -188,19 +214,19 @@ assert_equal %q{11}, %q{
     Thread.current[:a]
   }.value + Thread.current[:a]
 }
-assert_equal %q{100}, %q{
-begin
-  100.times do |i|
-    begin
-      Thread.start(Thread.current) {|u| u.raise }
-      raise
-    rescue
-    ensure
+assert_normal_exit %q{
+  begin
+    100.times do |i|
+      begin
+        th = Thread.start(Thread.current) {|u| u.raise }
+        raise
+      rescue
+      ensure
+        th.join
+      end
     end
+  rescue
   end
-rescue
-  100
-end
 }, '[ruby-dev:31371]'
 
 assert_equal 'true', %{
@@ -228,21 +254,21 @@ assert_equal 'ok', %{
       end
     END
   end
-  require "zzz.rb"
+  require "./zzz.rb"
   $result
 }
 
 assert_finish 3, %{
-  th = Thread.new {sleep 2}
-  th.join(1)
+  th = Thread.new {sleep 0.2}
+  th.join(0.1)
   th.join
 }
 
 assert_finish 3, %{
   require 'timeout'
-  th = Thread.new {sleep 2}
+  th = Thread.new {sleep 0.2}
   begin
-    Timeout.timeout(1) {th.join}
+    Timeout.timeout(0.1) {th.join}
   rescue Timeout::Error
   end
   th.join
@@ -267,8 +293,8 @@ assert_normal_exit %q{
 
 assert_equal 'ok', %q{
   def m
-    t = Thread.new { while true do // =~ "" end }
-    sleep 0.1
+    t = Thread.new { while true; // =~ "" end }
+    sleep 0.01
     10.times {
       if /((ab)*(ab)*)*(b)/ =~ "ab"*7
         return :ng if !$4
@@ -283,10 +309,6 @@ assert_equal 'ok', %q{
 }, '[ruby-dev:34492]'
 
 assert_normal_exit %q{
-  at_exit { Fiber.new{}.resume }
-}
-
-assert_normal_exit %q{
   g = enum_for(:local_variables)
   loop { g.next }
 }, '[ruby-dev:34128]'
@@ -312,10 +334,6 @@ assert_normal_exit %q{
 }, '[ruby-dev:34128]'
 
 assert_normal_exit %q{
-  Fiber.new(&Object.method(:class_eval)).resume("foo")
-}, '[ruby-dev:34128]'
-
-assert_normal_exit %q{
   Thread.new("foo", &Object.method(:class_eval)).join
 }, '[ruby-dev:34128]'
 
@@ -331,9 +349,10 @@ assert_equal 'ok', %q{
 
 assert_equal 'ok', %q{
   begin
-    m1, m2 = Mutex.new, Mutex.new
-    Thread.new { m1.lock; sleep 1; m2.lock }
-    m2.lock; sleep 1; m1.lock
+    m1, m2 = Thread::Mutex.new, Thread::Mutex.new
+    f1 = f2 = false
+    Thread.new { m1.lock; f2 = true; sleep 0.001 until f1; m2.lock }
+    m2.lock; f1 = true; sleep 0.001 until f2; m1.lock
     :ng
   rescue Exception
     :ok
@@ -341,34 +360,34 @@ assert_equal 'ok', %q{
 }
 
 assert_equal 'ok', %q{
-  m = Mutex.new
-  Thread.new { m.lock }; sleep 1; m.lock
+  m = Thread::Mutex.new
+  Thread.new { m.lock }; sleep 0.1; m.lock
   :ok
 }
 
 assert_equal 'ok', %q{
-  m = Mutex.new
+  m = Thread::Mutex.new
   Thread.new { m.lock }; m.lock
   :ok
 }
 
 assert_equal 'ok', %q{
-  m = Mutex.new
+  m = Thread::Mutex.new
   Thread.new { m.lock }.join; m.lock
   :ok
 }
 
 assert_equal 'ok', %q{
-  m = Mutex.new
-  Thread.new { m.lock; sleep 2 }
-  sleep 1; m.lock
+  m = Thread::Mutex.new
+  Thread.new { m.lock; sleep 0.2 }
+  sleep 0.1; m.lock
   :ok
 }
 
 assert_equal 'ok', %q{
-  m = Mutex.new
-  Thread.new { m.lock; sleep 2; m.unlock }
-  sleep 1; m.lock
+  m = Thread::Mutex.new
+  Thread.new { m.lock; sleep 0.2; m.unlock }
+  sleep 0.1; m.lock
   :ok
 }
 
@@ -380,8 +399,102 @@ assert_equal 'ok', %q{
 
 assert_equal 'ok', %q{
   begin
-    10000.times { Thread.new(true) {|x| x == false } }
+    100.times{
+      (1..100).map{ Thread.new(true) {|x| x == false } }.each{|th| th.join}
+    }
   rescue NoMemoryError, StandardError
   end
   :ok
 }
+
+assert_equal 'ok', %{
+  open("zzz.rb", "w") do |f|
+    f.puts <<-'end;' # do
+      begin
+        m = Thread::Mutex.new
+        parent = Thread.current
+        th1 = Thread.new { m.lock; sleep }
+        sleep 0.01 until th1.stop?
+        Thread.new do
+          sleep 0.01 until parent.stop?
+          begin
+            fork { GC.start }
+          rescue Exception
+            parent.raise $!
+          end
+          th1.run
+        end
+        m.lock
+        pid, status = Process.wait2
+        $result = status.success? ? :ok : :ng
+      rescue NotImplementedError
+        $result = :ok
+      end
+    end;
+  end
+  require "./zzz.rb"
+  $result
+}
+
+assert_finish 3, %q{
+  require 'thread'
+
+  lock = Thread::Mutex.new
+  cond = Thread::ConditionVariable.new
+  t = Thread.new do
+    lock.synchronize do
+      cond.wait(lock)
+    end
+  end
+
+  begin
+    pid = fork do
+      # Child
+      STDOUT.write "This is the child process.\n"
+      STDOUT.write "Child process exiting.\n"
+    end
+    Process.waitpid(pid)
+  rescue NotImplementedError
+  end
+}, '[ruby-core:23572]'
+
+assert_equal 'ok', %q{
+  begin
+    Process.waitpid2(fork {})[1].success? ? 'ok' : 'ng'
+  rescue NotImplementedError
+    'ok'
+  end
+}
+
+assert_equal 'foo', %q{
+  i = 0
+  Thread.start {sleep 1; exit!}
+  f = proc {|s, c| /#{c.call; s}/o }
+  th2 = Thread.new {
+    sleep 0.01 until i == 1
+    i = 2
+    f.call("bar", proc {sleep 2});
+    nil
+  }
+  th1 = Thread.new {
+    f.call("foo", proc {i = 1; sleep 0.01 until i == 2; sleep 0.01})
+    nil
+  }
+  [th1, th2].each {|t| t.join }
+  GC.start
+  f.call.source
+}
+assert_normal_exit %q{
+  class C
+    def inspect
+      sleep 0.5
+      'C!!'
+    end
+  end
+  Thread.new{
+    loop{
+      p C.new
+    }
+  }
+  sleep 0.1
+}, timeout: 5
diff --git a/builtin.c b/builtin.c
new file mode 100644
index 0000000000..7c3653dab7
--- /dev/null
+++ b/builtin.c
@@ -0,0 +1,69 @@
+#include "internal.h"
+#include "vm_core.h"
+#include "iseq.h"
+#include "builtin.h"
+
+#if CROSS_COMPILING
+
+#define INCLUDED_BY_BUILTIN_C 1
+#include "mini_builtin.c"
+
+#else
+
+#include "builtin_binary.inc"
+
+static const unsigned char *
+bin4feature(const struct builtin_binary *bb, const char *feature, size_t *psize)
+{
+    *psize = bb->bin_size;
+    return strcmp(bb->feature, feature) ? NULL : bb->bin;
+}
+
+static const unsigned char*
+builtin_lookup(const char *feature, size_t *psize)
+{
+    static int index = 0;
+    const unsigned char *bin = bin4feature(&builtin_binary[index++], feature, psize);
+
+    // usually, `builtin_binary` order is loading order at miniruby.
+    for (const struct builtin_binary *bb = &builtin_binary[0]; bb->feature &&! bin; bb++) {
+        bin = bin4feature(bb++, feature, psize);
+    }
+    return bin;
+}
+
+void
+rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table)
+{
+    // search binary
+    size_t size;
+    const unsigned char *bin = builtin_lookup(feature_name, &size);
+    if (! bin) {
+        rb_bug("builtin_lookup: can not find %s\n", feature_name);
+    }
+
+    // load binary
+    rb_vm_t *vm = GET_VM();
+    if (vm->builtin_function_table != NULL) rb_bug("vm->builtin_function_table should be NULL.");
+    vm->builtin_function_table = table;
+    vm->builtin_inline_index = 0;
+    const rb_iseq_t *iseq = rb_iseq_ibf_load_bytes((const char *)bin, size);
+    vm->builtin_function_table = NULL;
+
+    // exec
+    rb_iseq_eval(rb_iseq_check(iseq));
+}
+
+#endif
+
+void
+Init_builtin(void)
+{
+    // nothing
+}
+
+void
+Init_builtin_features(void)
+{
+    rb_load_with_builtin_functions("gem_prelude", NULL);
+}
diff --git a/builtin.h b/builtin.h
new file mode 100644
index 0000000000..3b2f477654
--- /dev/null
+++ b/builtin.h
@@ -0,0 +1,83 @@
+#ifndef BUILTIN_H_INCLUDED
+#define BUILTIN_H_INCLUDED
+
+// invoke
+
+struct rb_builtin_function {
+    // for invocation
+    const void * const func_ptr;
+    const int argc;
+
+    // for load
+    const int index;
+    const char * const name;
+
+    // for jit
+    void (*compiler)(FILE *, long, unsigned, bool);
+};
+
+#define RB_BUILTIN_FUNCTION(_i, _name, _fname, _arity, _compiler) {\
+  .name = #_name, \
+  .func_ptr = (void *)_fname, \
+  .argc = _arity, \
+  .index = _i, \
+  .compiler = _compiler, \
+}
+
+void rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table);
+
+#ifndef rb_execution_context_t
+typedef struct rb_execution_context_struct rb_execution_context_t;
+#define rb_execution_context_t rb_execution_context_t
+#endif
+
+/* The following code is generated by the following Ruby script:
+
+16.times{|i|
+  args = (i > 0 ? ', ' : '') + (0...i).map{"VALUE"}.join(', ')
+  puts "static inline void rb_builtin_function_check_arity#{i}(VALUE (*f)(rb_execution_context_t *ec, VALUE self#{args})){}"
+}
+*/
+
+static inline void rb_builtin_function_check_arity0(VALUE (*f)(rb_execution_context_t *ec, VALUE self)){}
+static inline void rb_builtin_function_check_arity1(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE)){}
+static inline void rb_builtin_function_check_arity2(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity3(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity4(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity5(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity6(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity7(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity8(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity9(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity10(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity11(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity12(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity13(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity14(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+static inline void rb_builtin_function_check_arity15(VALUE (*f)(rb_execution_context_t *ec, VALUE self, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE, VALUE)){}
+
+VALUE rb_vm_lvar_exposed(rb_execution_context_t *ec, int index);
+
+// __builtin_inline!
+
+PUREFUNC(static inline VALUE rb_vm_lvar(rb_execution_context_t *ec, int index));
+
+static inline VALUE
+rb_vm_lvar(rb_execution_context_t *ec, int index)
+{
+#if VM_CORE_H_EC_DEFINED
+    return ec->cfp->ep[index];
+#else
+    return rb_vm_lvar_exposed(ec, index);
+#endif
+}
+
+// dump/load
+
+struct builtin_binary {
+    const char *feature;          // feature name
+    const unsigned char *bin;     // binary by ISeq#to_binary
+    size_t bin_size;
+};
+
+#endif // BUILTIN_H_INCLUDED
diff --git a/ccan/build_assert/build_assert.h b/ccan/build_assert/build_assert.h
new file mode 100644
index 0000000000..a04d1d4709
--- /dev/null
+++ b/ccan/build_assert/build_assert.h
@@ -0,0 +1,40 @@
+/* CC0 (Public domain) - see ccan/licenses/CC0 file for details */
+#ifndef CCAN_BUILD_ASSERT_H
+#define CCAN_BUILD_ASSERT_H
+
+/**
+ * BUILD_ASSERT - assert a build-time dependency.
+ * @cond: the compile-time condition which must be true.
+ *
+ * Your compile will fail if the condition isn't true, or can't be evaluated
+ * by the compiler.  This can only be used within a function.
+ *
+ * Example:
+ *	#include <stddef.h>
+ *	...
+ *	static char *foo_to_char(struct foo *foo)
+ *	{
+ *		// This code needs string to be at start of foo.
+ *		BUILD_ASSERT(offsetof(struct foo, string) == 0);
+ *		return (char *)foo;
+ *	}
+ */
+#define BUILD_ASSERT(cond) \
+	do { (void) sizeof(char [1 - 2*!(cond)]); } while(0)
+
+/**
+ * BUILD_ASSERT_OR_ZERO - assert a build-time dependency, as an expression.
+ * @cond: the compile-time condition which must be true.
+ *
+ * Your compile will fail if the condition isn't true, or can't be evaluated
+ * by the compiler.  This can be used in an expression: its value is "0".
+ *
+ * Example:
+ *	#define foo_to_char(foo)					\
+ *		 ((char *)(foo)						\
+ *		  + BUILD_ASSERT_OR_ZERO(offsetof(struct foo, string) == 0))
+ */
+#define BUILD_ASSERT_OR_ZERO(cond) \
+	(sizeof(char [1 - 2*!(cond)]) - 1)
+
+#endif /* CCAN_BUILD_ASSERT_H */
diff --git a/ccan/check_type/check_type.h b/ccan/check_type/check_type.h
new file mode 100644
index 0000000000..1f77a535e4
--- /dev/null
+++ b/ccan/check_type/check_type.h
@@ -0,0 +1,63 @@
+/* CC0 (Public domain) - see ccan/licenses/CC0 file for details */
+#ifndef CCAN_CHECK_TYPE_H
+#define CCAN_CHECK_TYPE_H
+
+/**
+ * check_type - issue a warning or build failure if type is not correct.
+ * @expr: the expression whose type we should check (not evaluated).
+ * @type: the exact type we expect the expression to be.
+ *
+ * This macro is usually used within other macros to try to ensure that a macro
+ * argument is of the expected type.  No type promotion of the expression is
+ * done: an unsigned int is not the same as an int!
+ *
+ * check_type() always evaluates to 0.
+ *
+ * If your compiler does not support typeof, then the best we can do is fail
+ * to compile if the sizes of the types are unequal (a less complete check).
+ *
+ * Example:
+ *	// They should always pass a 64-bit value to _set_some_value!
+ *	#define set_some_value(expr)			\
+ *		_set_some_value((check_type((expr), uint64_t), (expr)))
+ */
+
+/**
+ * check_types_match - issue a warning or build failure if types are not same.
+ * @expr1: the first expression (not evaluated).
+ * @expr2: the second expression (not evaluated).
+ *
+ * This macro is usually used within other macros to try to ensure that
+ * arguments are of identical types.  No type promotion of the expressions is
+ * done: an unsigned int is not the same as an int!
+ *
+ * check_types_match() always evaluates to 0.
+ *
+ * If your compiler does not support typeof, then the best we can do is fail
+ * to compile if the sizes of the types are unequal (a less complete check).
+ *
+ * Example:
+ *	// Do subtraction to get to enclosing type, but make sure that
+ *	// pointer is of correct type for that member.
+ *	#define container_of(mbr_ptr, encl_type, mbr)			\
+ *		(check_types_match((mbr_ptr), &((encl_type *)0)->mbr),	\
+ *		 ((encl_type *)						\
+ *		  ((char *)(mbr_ptr) - offsetof(enclosing_type, mbr))))
+ */
+#if HAVE_TYPEOF
+#define check_type(expr, type)			\
+	((typeof(expr) *)0 != (type *)0)
+
+#define check_types_match(expr1, expr2)		\
+	((typeof(expr1) *)0 != (typeof(expr2) *)0)
+#else
+#include "ccan/build_assert/build_assert.h"
+/* Without typeof, we can only test the sizes. */
+#define check_type(expr, type)					\
+	BUILD_ASSERT_OR_ZERO(sizeof(expr) == sizeof(type))
+
+#define check_types_match(expr1, expr2)				\
+	BUILD_ASSERT_OR_ZERO(sizeof(expr1) == sizeof(expr2))
+#endif /* HAVE_TYPEOF */
+
+#endif /* CCAN_CHECK_TYPE_H */
diff --git a/ccan/container_of/container_of.h b/ccan/container_of/container_of.h
new file mode 100644
index 0000000000..ae3e1fc81f
--- /dev/null
+++ b/ccan/container_of/container_of.h
@@ -0,0 +1,142 @@
+/* CC0 (Public domain) - see ccan/licenses/CC0 file for details */
+#ifndef CCAN_CONTAINER_OF_H
+#define CCAN_CONTAINER_OF_H
+#include "ccan/check_type/check_type.h"
+
+/**
+ * container_of - get pointer to enclosing structure
+ * @member_ptr: pointer to the structure member
+ * @containing_type: the type this member is within
+ * @member: the name of this member within the structure.
+ *
+ * Given a pointer to a member of a structure, this macro does pointer
+ * subtraction to return the pointer to the enclosing type.
+ *
+ * Example:
+ *	struct foo {
+ *		int fielda, fieldb;
+ *		// ...
+ *	};
+ *	struct info {
+ *		int some_other_field;
+ *		struct foo my_foo;
+ *	};
+ *
+ *	static struct info *foo_to_info(struct foo *foo)
+ *	{
+ *		return container_of(foo, struct info, my_foo);
+ *	}
+ */
+#define container_of(member_ptr, containing_type, member)		\
+	 ((containing_type *)						\
+	  ((char *)(member_ptr)						\
+	   - container_off(containing_type, member))			\
+	  + check_types_match(*(member_ptr), ((containing_type *)0)->member))
+
+
+/**
+ * container_of_or_null - get pointer to enclosing structure, or NULL
+ * @member_ptr: pointer to the structure member
+ * @containing_type: the type this member is within
+ * @member: the name of this member within the structure.
+ *
+ * Given a pointer to a member of a structure, this macro does pointer
+ * subtraction to return the pointer to the enclosing type, unless it
+ * is given NULL, in which case it also returns NULL.
+ *
+ * Example:
+ *	struct foo {
+ *		int fielda, fieldb;
+ *		// ...
+ *	};
+ *	struct info {
+ *		int some_other_field;
+ *		struct foo my_foo;
+ *	};
+ *
+ *	static struct info *foo_to_info_allowing_null(struct foo *foo)
+ *	{
+ *		return container_of_or_null(foo, struct info, my_foo);
+ *	}
+ */
+static inline char *container_of_or_null_(void *member_ptr, size_t offset)
+{
+	return member_ptr ? (char *)member_ptr - offset : NULL;
+}
+#define container_of_or_null(member_ptr, containing_type, member)	\
+	((containing_type *)						\
+	 container_of_or_null_(member_ptr,				\
+			       container_off(containing_type, member))	\
+	 + check_types_match(*(member_ptr), ((containing_type *)0)->member))
+
+/**
+ * container_off - get offset to enclosing structure
+ * @containing_type: the type this member is within
+ * @member: the name of this member within the structure.
+ *
+ * Given a pointer to a member of a structure, this macro does
+ * typechecking and figures out the offset to the enclosing type.
+ *
+ * Example:
+ *	struct foo {
+ *		int fielda, fieldb;
+ *		// ...
+ *	};
+ *	struct info {
+ *		int some_other_field;
+ *		struct foo my_foo;
+ *	};
+ *
+ *	static struct info *foo_to_info(struct foo *foo)
+ *	{
+ *		size_t off = container_off(struct info, my_foo);
+ *		return (void *)((char *)foo - off);
+ *	}
+ */
+#define container_off(containing_type, member)	\
+	offsetof(containing_type, member)
+
+/**
+ * container_of_var - get pointer to enclosing structure using a variable
+ * @member_ptr: pointer to the structure member
+ * @container_var: a pointer of same type as this member's container
+ * @member: the name of this member within the structure.
+ *
+ * Given a pointer to a member of a structure, this macro does pointer
+ * subtraction to return the pointer to the enclosing type.
+ *
+ * Example:
+ *	static struct info *foo_to_i(struct foo *foo)
+ *	{
+ *		struct info *i = container_of_var(foo, i, my_foo);
+ *		return i;
+ *	}
+ */
+#if HAVE_TYPEOF
+#define container_of_var(member_ptr, container_var, member) \
+	container_of(member_ptr, typeof(*container_var), member)
+#else
+#define container_of_var(member_ptr, container_var, member)	\
+	((void *)((char *)(member_ptr)	-			\
+		  container_off_var(container_var, member)))
+#endif
+
+/**
+ * container_off_var - get offset of a field in enclosing structure
+ * @container_var: a pointer to a container structure
+ * @member: the name of a member within the structure.
+ *
+ * Given (any) pointer to a structure and a its member name, this
+ * macro does pointer subtraction to return offset of member in a
+ * structure memory layout.
+ *
+ */
+#if HAVE_TYPEOF
+#define container_off_var(var, member)		\
+	container_off(typeof(*var), member)
+#else
+#define container_off_var(var, member)			\
+	((const char *)&(var)->member - (const char *)(var))
+#endif
+
+#endif /* CCAN_CONTAINER_OF_H */
diff --git a/ccan/licenses/BSD-MIT b/ccan/licenses/BSD-MIT
new file mode 100644
index 0000000000..89de354795
--- /dev/null
+++ b/ccan/licenses/BSD-MIT
@@ -0,0 +1,17 @@
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/ccan/licenses/CC0 b/ccan/licenses/CC0
new file mode 100644
index 0000000000..feb9b118e6
--- /dev/null
+++ b/ccan/licenses/CC0
@@ -0,0 +1,28 @@
+Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent owner(s) (each and all, an "owner") of an original work of authorship and/or a database (each, a "Work").
+
+Certain owners wish to permanently relinquish those rights to a Work for the purpose of contributing to a commons of creative, cultural and scientific works ("Commons") that the public can reliably and without fear of later claims of infringement build upon, modify, incorporate in other works, reuse and redistribute as freely as possible in any form whatsoever and for any purposes, including without limitation commercial purposes. These owners may contribute to the Commons to promote the ideal of a free culture and the further production of creative, cultural and scientific works, or to gain reputation or greater distribution for their Work in part through the use and efforts of others.
+
+For these and/or other purposes and motivations, and without any expectation of additional consideration or compensation, the person associating CC0 with a Work (the "Affirmer"), to the extent that he or she is an owner of Copyright and Related Rights in the Work, voluntarily elects to apply CC0 to the Work and publicly distribute the Work under its terms, with knowledge of his or her Copyright and Related Rights in the Work and the meaning and intended legal effect of CC0 on those rights.
+
+1. Copyright and Related Rights. A Work made available under CC0 may be protected by copyright and related or neighboring rights ("Copyright and Related Rights"). Copyright and Related Rights include, but are not limited to, the following:
+
+    the right to reproduce, adapt, distribute, perform, display, communicate, and translate a Work;
+    moral rights retained by the original author(s) and/or performer(s);
+    publicity and privacy rights pertaining to a person's image or likeness depicted in a Work;
+    rights protecting against unfair competition in regards to a Work, subject to the limitations in paragraph 4(a), below;
+    rights protecting the extraction, dissemination, use and reuse of data in a Work;
+    database rights (such as those arising under Directive 96/9/EC of the European Parliament and of the Council of 11 March 1996 on the legal protection of databases, and under any national implementation thereof, including any amended or successor version of such directive); and
+    other similar, equivalent or corresponding rights throughout the world based on applicable law or treaty, and any national implementations thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention of, applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and unconditionally waives, abandons, and surrenders all of Affirmer's Copyright and Related Rights and associated claims and causes of action, whether now known or unknown (including existing as well as future claims and causes of action), in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each member of the public at large and to the detriment of Affirmer's heirs and successors, fully intending that such Waiver shall not be subject to revocation, rescission, cancellation, termination, or any other legal or equitable action to disrupt the quiet enjoyment of the Work by the public as contemplated by Affirmer's express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason be judged legally invalid or ineffective under applicable law, then the Waiver shall be preserved to the maximum extent permitted taking into account Affirmer's express Statement of Purpose. In addition, to the extent the Waiver is so judged Affirmer hereby grants to each affected person a royalty-free, non transferable, non sublicensable, non exclusive, irrevocable and unconditional license to exercise Affirmer's Copyright and Related Rights in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "License"). The License shall be deemed effective as of the date CC0 was applied by Affirmer to the Work. Should any part of the License for any reason be judged legally invalid or ineffective under applicable law, such partial invalidity or ineffectiveness shall not invalidate the remainder of the License, and in such case Affirmer hereby affirms that he or she will not (i) exercise any of his or her remaining Copyright and Related Rights in the Work or (ii) assert any associated claims and causes of action with respect to the Work, in either case contrary to Affirmer's express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+    No trademark or patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document.
+    Affirmer offers the Work as-is and makes no representations or warranties of any kind concerning the Work, express, implied, statutory or otherwise, including without limitation warranties of title, merchantability, fitness for a particular purpose, non infringement, or the absence of latent or other defects, accuracy, or the present or absence of errors, whether or not discoverable, all to the greatest extent permissible under applicable law.
+    Affirmer disclaims responsibility for clearing rights of other persons that may apply to the Work or any use thereof, including without limitation any person's Copyright and Related Rights in the Work. Further, Affirmer disclaims responsibility for obtaining any necessary consents, permissions or other rights required for any use of the Work.
+    Affirmer understands and acknowledges that Creative Commons is not a party to this document and has no duty or obligation with respect to this CC0 or use of the Work.
diff --git a/ccan/list/list.h b/ccan/list/list.h
new file mode 100644
index 0000000000..7d219307bc
--- /dev/null
+++ b/ccan/list/list.h
@@ -0,0 +1,788 @@
+/* Licensed under BSD-MIT - see ccan/licenses/BSD-MIT file for details */
+#ifndef CCAN_LIST_H
+#define CCAN_LIST_H
+#include <assert.h>
+#include "ccan/str/str.h"
+#include "ccan/container_of/container_of.h"
+#include "ccan/check_type/check_type.h"
+
+/**
+ * struct list_node - an entry in a doubly-linked list
+ * @next: next entry (self if empty)
+ * @prev: previous entry (self if empty)
+ *
+ * This is used as an entry in a linked list.
+ * Example:
+ *	struct child {
+ *		const char *name;
+ *		// Linked list of all us children.
+ *		struct list_node list;
+ *	};
+ */
+struct list_node
+{
+	struct list_node *next, *prev;
+};
+
+/**
+ * struct list_head - the head of a doubly-linked list
+ * @h: the list_head (containing next and prev pointers)
+ *
+ * This is used as the head of a linked list.
+ * Example:
+ *	struct parent {
+ *		const char *name;
+ *		struct list_head children;
+ *		unsigned int num_children;
+ *	};
+ */
+struct list_head
+{
+	struct list_node n;
+};
+
+#define LIST_LOC __FILE__  ":" stringify(__LINE__)
+#define list_debug(h, loc) ((void)loc, h)
+#define list_debug_node(n, loc) ((void)loc, n)
+
+/**
+ * LIST_HEAD_INIT - initializer for an empty list_head
+ * @name: the name of the list.
+ *
+ * Explicit initializer for an empty list.
+ *
+ * See also:
+ *	LIST_HEAD, list_head_init()
+ *
+ * Example:
+ *	static struct list_head my_list = LIST_HEAD_INIT(my_list);
+ */
+#define LIST_HEAD_INIT(name) { { &(name).n, &(name).n } }
+
+/**
+ * LIST_HEAD - define and initialize an empty list_head
+ * @name: the name of the list.
+ *
+ * The LIST_HEAD macro defines a list_head and initializes it to an empty
+ * list.  It can be prepended by "static" to define a static list_head.
+ *
+ * See also:
+ *	LIST_HEAD_INIT, list_head_init()
+ *
+ * Example:
+ *	static LIST_HEAD(my_global_list);
+ */
+#define LIST_HEAD(name) \
+	struct list_head name = LIST_HEAD_INIT(name)
+
+/**
+ * list_head_init - initialize a list_head
+ * @h: the list_head to set to the empty list
+ *
+ * Example:
+ *	...
+ *	struct parent *parent = malloc(sizeof(*parent));
+ *
+ *	list_head_init(&parent->children);
+ *	parent->num_children = 0;
+ */
+static inline void list_head_init(struct list_head *h)
+{
+	h->n.next = h->n.prev = &h->n;
+}
+
+/**
+ * list_node_init - initialize a list_node
+ * @n: the list_node to link to itself.
+ *
+ * You don't need to use this normally!  But it lets you list_del(@n)
+ * safely.
+ */
+static inline void list_node_init(struct list_node *n)
+{
+	n->next = n->prev = n;
+}
+
+/**
+ * list_add_after - add an entry after an existing node in a linked list
+ * @h: the list_head to add the node to (for debugging)
+ * @p: the existing list_node to add the node after
+ * @n: the new list_node to add to the list.
+ *
+ * The existing list_node must already be a member of the list.
+ * The new list_node does not need to be initialized; it will be overwritten.
+ *
+ * Example:
+ *	struct child c1, c2, c3;
+ *	LIST_HEAD(h);
+ *
+ *	list_add_tail(&h, &c1.list);
+ *	list_add_tail(&h, &c3.list);
+ *	list_add_after(&h, &c1.list, &c2.list);
+ */
+#define list_add_after(h, p, n) list_add_after_(h, p, n, LIST_LOC)
+static inline void list_add_after_(struct list_head *h,
+				   struct list_node *p,
+				   struct list_node *n,
+				   const char *abortstr)
+{
+	n->next = p->next;
+	n->prev = p;
+	p->next->prev = n;
+	p->next = n;
+	(void)list_debug(h, abortstr);
+}
+
+/**
+ * list_add - add an entry at the start of a linked list.
+ * @h: the list_head to add the node to
+ * @n: the list_node to add to the list.
+ *
+ * The list_node does not need to be initialized; it will be overwritten.
+ * Example:
+ *	struct child *child = malloc(sizeof(*child));
+ *
+ *	child->name = "marvin";
+ *	list_add(&parent->children, &child->list);
+ *	parent->num_children++;
+ */
+#define list_add(h, n) list_add_(h, n, LIST_LOC)
+static inline void list_add_(struct list_head *h,
+			     struct list_node *n,
+			     const char *abortstr)
+{
+	list_add_after_(h, &h->n, n, abortstr);
+}
+
+/**
+ * list_add_before - add an entry before an existing node in a linked list
+ * @h: the list_head to add the node to (for debugging)
+ * @p: the existing list_node to add the node before
+ * @n: the new list_node to add to the list.
+ *
+ * The existing list_node must already be a member of the list.
+ * The new list_node does not need to be initialized; it will be overwritten.
+ *
+ * Example:
+ *	list_head_init(&h);
+ *	list_add_tail(&h, &c1.list);
+ *	list_add_tail(&h, &c3.list);
+ *	list_add_before(&h, &c3.list, &c2.list);
+ */
+#define list_add_before(h, p, n) list_add_before_(h, p, n, LIST_LOC)
+static inline void list_add_before_(struct list_head *h,
+				    struct list_node *p,
+				    struct list_node *n,
+				    const char *abortstr)
+{
+	n->next = p;
+	n->prev = p->prev;
+	p->prev->next = n;
+	p->prev = n;
+	(void)list_debug(h, abortstr);
+}
+
+/**
+ * list_add_tail - add an entry at the end of a linked list.
+ * @h: the list_head to add the node to
+ * @n: the list_node to add to the list.
+ *
+ * The list_node does not need to be initialized; it will be overwritten.
+ * Example:
+ *	list_add_tail(&parent->children, &child->list);
+ *	parent->num_children++;
+ */
+#define list_add_tail(h, n) list_add_tail_(h, n, LIST_LOC)
+static inline void list_add_tail_(struct list_head *h,
+				  struct list_node *n,
+				  const char *abortstr)
+{
+	list_add_before_(h, &h->n, n, abortstr);
+}
+
+/**
+ * list_empty - is a list empty?
+ * @h: the list_head
+ *
+ * If the list is empty, returns true.
+ *
+ * Example:
+ *	assert(list_empty(&parent->children) == (parent->num_children == 0));
+ */
+#define list_empty(h) list_empty_(h, LIST_LOC)
+static inline int list_empty_(const struct list_head *h, const char* abortstr)
+{
+	(void)list_debug(h, abortstr);
+	return h->n.next == &h->n;
+}
+
+/**
+ * list_empty_nodebug - is a list empty (and don't perform debug checks)?
+ * @h: the list_head
+ *
+ * If the list is empty, returns true.
+ * This differs from list_empty() in that if CCAN_LIST_DEBUG is set it
+ * will NOT perform debug checks. Only use this function if you REALLY
+ * know what you're doing.
+ *
+ * Example:
+ *	assert(list_empty_nodebug(&parent->children) == (parent->num_children == 0));
+ */
+#ifndef CCAN_LIST_DEBUG
+#define list_empty_nodebug(h) list_empty(h)
+#else
+static inline int list_empty_nodebug(const struct list_head *h)
+{
+	return h->n.next == &h->n;
+}
+#endif
+
+/**
+ * list_empty_nocheck - is a list empty?
+ * @h: the list_head
+ *
+ * If the list is empty, returns true. This doesn't perform any
+ * debug check for list consistency, so it can be called without
+ * locks, racing with the list being modified. This is ok for
+ * checks where an incorrect result is not an issue (optimized
+ * bail out path for example).
+ */
+static inline bool list_empty_nocheck(const struct list_head *h)
+{
+	return h->n.next == &h->n;
+}
+
+/**
+ * list_del - delete an entry from an (unknown) linked list.
+ * @n: the list_node to delete from the list.
+ *
+ * Note that this leaves @n in an undefined state; it can be added to
+ * another list, but not deleted again.
+ *
+ * See also:
+ *	list_del_from(), list_del_init()
+ *
+ * Example:
+ *	list_del(&child->list);
+ *	parent->num_children--;
+ */
+#define list_del(n) list_del_(n, LIST_LOC)
+static inline void list_del_(struct list_node *n, const char* abortstr)
+{
+	(void)list_debug_node(n, abortstr);
+	n->next->prev = n->prev;
+	n->prev->next = n->next;
+#ifdef CCAN_LIST_DEBUG
+	/* Catch use-after-del. */
+	n->next = n->prev = NULL;
+#endif
+}
+
+/**
+ * list_del_init - delete a node, and reset it so it can be deleted again.
+ * @n: the list_node to be deleted.
+ *
+ * list_del(@n) or list_del_init() again after this will be safe,
+ * which can be useful in some cases.
+ *
+ * See also:
+ *	list_del_from(), list_del()
+ *
+ * Example:
+ *	list_del_init(&child->list);
+ *	parent->num_children--;
+ */
+#define list_del_init(n) list_del_init_(n, LIST_LOC)
+static inline void list_del_init_(struct list_node *n, const char *abortstr)
+{
+	list_del_(n, abortstr);
+	list_node_init(n);
+}
+
+/**
+ * list_del_from - delete an entry from a known linked list.
+ * @h: the list_head the node is in.
+ * @n: the list_node to delete from the list.
+ *
+ * This explicitly indicates which list a node is expected to be in,
+ * which is better documentation and can catch more bugs.
+ *
+ * See also: list_del()
+ *
+ * Example:
+ *	list_del_from(&parent->children, &child->list);
+ *	parent->num_children--;
+ */
+static inline void list_del_from(struct list_head *h, struct list_node *n)
+{
+#ifdef CCAN_LIST_DEBUG
+	{
+		/* Thorough check: make sure it was in list! */
+		struct list_node *i;
+		for (i = h->n.next; i != n; i = i->next)
+			assert(i != &h->n);
+	}
+#endif /* CCAN_LIST_DEBUG */
+
+	/* Quick test that catches a surprising number of bugs. */
+	assert(!list_empty(h));
+	list_del(n);
+}
+
+/**
+ * list_swap - swap out an entry from an (unknown) linked list for a new one.
+ * @o: the list_node to replace from the list.
+ * @n: the list_node to insert in place of the old one.
+ *
+ * Note that this leaves @o in an undefined state; it can be added to
+ * another list, but not deleted/swapped again.
+ *
+ * See also:
+ *	list_del()
+ *
+ * Example:
+ *	struct child x1, x2;
+ *	LIST_HEAD(xh);
+ *
+ *	list_add(&xh, &x1.list);
+ *	list_swap(&x1.list, &x2.list);
+ */
+#define list_swap(o, n) list_swap_(o, n, LIST_LOC)
+static inline void list_swap_(struct list_node *o,
+			      struct list_node *n,
+			      const char* abortstr)
+{
+	(void)list_debug_node(o, abortstr);
+	*n = *o;
+	n->next->prev = n;
+	n->prev->next = n;
+#ifdef CCAN_LIST_DEBUG
+	/* Catch use-after-del. */
+	o->next = o->prev = NULL;
+#endif
+}
+
+/**
+ * list_entry - convert a list_node back into the structure containing it.
+ * @n: the list_node
+ * @type: the type of the entry
+ * @member: the list_node member of the type
+ *
+ * Example:
+ *	// First list entry is children.next; convert back to child.
+ *	child = list_entry(parent->children.n.next, struct child, list);
+ *
+ * See Also:
+ *	list_top(), list_for_each()
+ */
+#define list_entry(n, type, member) container_of(n, type, member)
+
+/**
+ * list_top - get the first entry in a list
+ * @h: the list_head
+ * @type: the type of the entry
+ * @member: the list_node member of the type
+ *
+ * If the list is empty, returns NULL.
+ *
+ * Example:
+ *	struct child *first;
+ *	first = list_top(&parent->children, struct child, list);
+ *	if (!first)
+ *		printf("Empty list!\n");
+ */
+#define list_top(h, type, member)					\
+	((type *)list_top_((h), list_off_(type, member)))
+
+static inline const void *list_top_(const struct list_head *h, size_t off)
+{
+	if (list_empty(h))
+		return NULL;
+	return (const char *)h->n.next - off;
+}
+
+/**
+ * list_pop - remove the first entry in a list
+ * @h: the list_head
+ * @type: the type of the entry
+ * @member: the list_node member of the type
+ *
+ * If the list is empty, returns NULL.
+ *
+ * Example:
+ *	struct child *one;
+ *	one = list_pop(&parent->children, struct child, list);
+ *	if (!one)
+ *		printf("Empty list!\n");
+ */
+#define list_pop(h, type, member)					\
+	((type *)list_pop_((h), list_off_(type, member)))
+
+static inline const void *list_pop_(const struct list_head *h, size_t off)
+{
+	struct list_node *n;
+
+	if (list_empty(h))
+		return NULL;
+	n = h->n.next;
+	list_del(n);
+	return (const char *)n - off;
+}
+
+/**
+ * list_tail - get the last entry in a list
+ * @h: the list_head
+ * @type: the type of the entry
+ * @member: the list_node member of the type
+ *
+ * If the list is empty, returns NULL.
+ *
+ * Example:
+ *	struct child *last;
+ *	last = list_tail(&parent->children, struct child, list);
+ *	if (!last)
+ *		printf("Empty list!\n");
+ */
+#define list_tail(h, type, member) \
+	((type *)list_tail_((h), list_off_(type, member)))
+
+static inline const void *list_tail_(const struct list_head *h, size_t off)
+{
+	if (list_empty(h))
+		return NULL;
+	return (const char *)h->n.prev - off;
+}
+
+/**
+ * list_for_each - iterate through a list.
+ * @h: the list_head (warning: evaluated multiple times!)
+ * @i: the structure containing the list_node
+ * @member: the list_node member of the structure
+ *
+ * This is a convenient wrapper to iterate @i over the entire list.  It's
+ * a for loop, so you can break and continue as normal.
+ *
+ * Example:
+ *	list_for_each(&parent->children, child, list)
+ *		printf("Name: %s\n", child->name);
+ */
+#define list_for_each(h, i, member)					\
+	list_for_each_off(h, i, list_off_var_(i, member))
+
+/**
+ * list_for_each_rev - iterate through a list backwards.
+ * @h: the list_head
+ * @i: the structure containing the list_node
+ * @member: the list_node member of the structure
+ *
+ * This is a convenient wrapper to iterate @i over the entire list.  It's
+ * a for loop, so you can break and continue as normal.
+ *
+ * Example:
+ *	list_for_each_rev(&parent->children, child, list)
+ *		printf("Name: %s\n", child->name);
+ */
+#define list_for_each_rev(h, i, member)					\
+	list_for_each_rev_off(h, i, list_off_var_(i, member))
+
+/**
+ * list_for_each_rev_safe - iterate through a list backwards,
+ * maybe during deletion
+ * @h: the list_head
+ * @i: the structure containing the list_node
+ * @nxt: the structure containing the list_node
+ * @member: the list_node member of the structure
+ *
+ * This is a convenient wrapper to iterate @i over the entire list backwards.
+ * It's a for loop, so you can break and continue as normal.  The extra
+ * variable * @nxt is used to hold the next element, so you can delete @i
+ * from the list.
+ *
+ * Example:
+ *	struct child *next;
+ *	list_for_each_rev_safe(&parent->children, child, next, list) {
+ *		printf("Name: %s\n", child->name);
+ *	}
+ */
+#define list_for_each_rev_safe(h, i, nxt, member)			\
+	list_for_each_rev_safe_off(h, i, nxt, list_off_var_(i, member))
+
+/**
+ * list_for_each_safe - iterate through a list, maybe during deletion
+ * @h: the list_head
+ * @i: the structure containing the list_node
+ * @nxt: the structure containing the list_node
+ * @member: the list_node member of the structure
+ *
+ * This is a convenient wrapper to iterate @i over the entire list.  It's
+ * a for loop, so you can break and continue as normal.  The extra variable
+ * @nxt is used to hold the next element, so you can delete @i from the list.
+ *
+ * Example:
+ *	list_for_each_safe(&parent->children, child, next, list) {
+ *		list_del(&child->list);
+ *		parent->num_children--;
+ *	}
+ */
+#define list_for_each_safe(h, i, nxt, member)				\
+	list_for_each_safe_off(h, i, nxt, list_off_var_(i, member))
+
+/**
+ * list_next - get the next entry in a list
+ * @h: the list_head
+ * @i: a pointer to an entry in the list.
+ * @member: the list_node member of the structure
+ *
+ * If @i was the last entry in the list, returns NULL.
+ *
+ * Example:
+ *	struct child *second;
+ *	second = list_next(&parent->children, first, list);
+ *	if (!second)
+ *		printf("No second child!\n");
+ */
+#define list_next(h, i, member)						\
+	((list_typeof(i))list_entry_or_null(list_debug(h,		\
+					    __FILE__ ":" stringify(__LINE__)), \
+					    (i)->member.next,		\
+					    list_off_var_((i), member)))
+
+/**
+ * list_prev - get the previous entry in a list
+ * @h: the list_head
+ * @i: a pointer to an entry in the list.
+ * @member: the list_node member of the structure
+ *
+ * If @i was the first entry in the list, returns NULL.
+ *
+ * Example:
+ *	first = list_prev(&parent->children, second, list);
+ *	if (!first)
+ *		printf("Can't go back to first child?!\n");
+ */
+#define list_prev(h, i, member)						\
+	((list_typeof(i))list_entry_or_null(list_debug(h,		\
+					    __FILE__ ":" stringify(__LINE__)), \
+					    (i)->member.prev,		\
+					    list_off_var_((i), member)))
+
+/**
+ * list_append_list - empty one list onto the end of another.
+ * @to: the list to append into
+ * @from: the list to empty.
+ *
+ * This takes the entire contents of @from and moves it to the end of
+ * @to.  After this @from will be empty.
+ *
+ * Example:
+ *	struct list_head adopter;
+ *
+ *	list_append_list(&adopter, &parent->children);
+ *	assert(list_empty(&parent->children));
+ *	parent->num_children = 0;
+ */
+#define list_append_list(t, f) list_append_list_(t, f,			\
+				   __FILE__ ":" stringify(__LINE__))
+static inline void list_append_list_(struct list_head *to,
+				     struct list_head *from,
+				     const char *abortstr)
+{
+	struct list_node *from_tail = list_debug(from, abortstr)->n.prev;
+	struct list_node *to_tail = list_debug(to, abortstr)->n.prev;
+
+	/* Sew in head and entire list. */
+	to->n.prev = from_tail;
+	from_tail->next = &to->n;
+	to_tail->next = &from->n;
+	from->n.prev = to_tail;
+
+	/* Now remove head. */
+	list_del(&from->n);
+	list_head_init(from);
+}
+
+/**
+ * list_prepend_list - empty one list into the start of another.
+ * @to: the list to prepend into
+ * @from: the list to empty.
+ *
+ * This takes the entire contents of @from and moves it to the start
+ * of @to.  After this @from will be empty.
+ *
+ * Example:
+ *	list_prepend_list(&adopter, &parent->children);
+ *	assert(list_empty(&parent->children));
+ *	parent->num_children = 0;
+ */
+#define list_prepend_list(t, f) list_prepend_list_(t, f, LIST_LOC)
+static inline void list_prepend_list_(struct list_head *to,
+				      struct list_head *from,
+				      const char *abortstr)
+{
+	struct list_node *from_tail = list_debug(from, abortstr)->n.prev;
+	struct list_node *to_head = list_debug(to, abortstr)->n.next;
+
+	/* Sew in head and entire list. */
+	to->n.next = &from->n;
+	from->n.prev = &to->n;
+	to_head->prev = from_tail;
+	from_tail->next = to_head;
+
+	/* Now remove head. */
+	list_del(&from->n);
+	list_head_init(from);
+}
+
+/* internal macros, do not use directly */
+#define list_for_each_off_dir_(h, i, off, dir)				\
+	for (i = list_node_to_off_(list_debug(h, LIST_LOC)->n.dir,	\
+				   (off));				\
+	list_node_from_off_((void *)i, (off)) != &(h)->n;		\
+	i = list_node_to_off_(list_node_from_off_((void *)i, (off))->dir, \
+			      (off)))
+
+#define list_for_each_safe_off_dir_(h, i, nxt, off, dir)		\
+	for (i = list_node_to_off_(list_debug(h, LIST_LOC)->n.dir,	\
+				   (off)),				\
+	nxt = list_node_to_off_(list_node_from_off_(i, (off))->dir,	\
+				(off));					\
+	list_node_from_off_(i, (off)) != &(h)->n;			\
+	i = nxt,							\
+	nxt = list_node_to_off_(list_node_from_off_(i, (off))->dir,	\
+				(off)))
+
+/**
+ * list_for_each_off - iterate through a list of memory regions.
+ * @h: the list_head
+ * @i: the pointer to a memory region which contains list node data.
+ * @off: offset(relative to @i) at which list node data resides.
+ *
+ * This is a low-level wrapper to iterate @i over the entire list, used to
+ * implement all oher, more high-level, for-each constructs. It's a for loop,
+ * so you can break and continue as normal.
+ *
+ * WARNING! Being the low-level macro that it is, this wrapper doesn't know
+ * nor care about the type of @i. The only assumption made is that @i points
+ * to a chunk of memory that at some @offset, relative to @i, contains a
+ * properly filled `struct list_node' which in turn contains pointers to
+ * memory chunks and it's turtles all the way down. With all that in mind
+ * remember that given the wrong pointer/offset couple this macro will
+ * happily churn all you memory until SEGFAULT stops it, in other words
+ * caveat emptor.
+ *
+ * It is worth mentioning that one of legitimate use-cases for that wrapper
+ * is operation on opaque types with known offset for `struct list_node'
+ * member(preferably 0), because it allows you not to disclose the type of
+ * @i.
+ *
+ * Example:
+ *	list_for_each_off(&parent->children, child,
+ *				offsetof(struct child, list))
+ *		printf("Name: %s\n", child->name);
+ */
+#define list_for_each_off(h, i, off)                                    \
+	list_for_each_off_dir_((h),(i),(off),next)
+
+/**
+ * list_for_each_rev_off - iterate through a list of memory regions backwards
+ * @h: the list_head
+ * @i: the pointer to a memory region which contains list node data.
+ * @off: offset(relative to @i) at which list node data resides.
+ *
+ * See list_for_each_off for details
+ */
+#define list_for_each_rev_off(h, i, off)                                    \
+	list_for_each_off_dir_((h),(i),(off),prev)
+
+/**
+ * list_for_each_safe_off - iterate through a list of memory regions, maybe
+ * during deletion
+ * @h: the list_head
+ * @i: the pointer to a memory region which contains list node data.
+ * @nxt: the structure containing the list_node
+ * @off: offset(relative to @i) at which list node data resides.
+ *
+ * For details see `list_for_each_off' and `list_for_each_safe'
+ * descriptions.
+ *
+ * Example:
+ *	list_for_each_safe_off(&parent->children, child,
+ *		next, offsetof(struct child, list))
+ *		printf("Name: %s\n", child->name);
+ */
+#define list_for_each_safe_off(h, i, nxt, off)                          \
+	list_for_each_safe_off_dir_((h),(i),(nxt),(off),next)
+
+/**
+ * list_for_each_rev_safe_off - iterate backwards through a list of
+ * memory regions, maybe during deletion
+ * @h: the list_head
+ * @i: the pointer to a memory region which contains list node data.
+ * @nxt: the structure containing the list_node
+ * @off: offset(relative to @i) at which list node data resides.
+ *
+ * For details see `list_for_each_rev_off' and `list_for_each_rev_safe'
+ * descriptions.
+ *
+ * Example:
+ *	list_for_each_rev_safe_off(&parent->children, child,
+ *		next, offsetof(struct child, list))
+ *		printf("Name: %s\n", child->name);
+ */
+#define list_for_each_rev_safe_off(h, i, nxt, off)                      \
+	list_for_each_safe_off_dir_((h),(i),(nxt),(off),prev)
+
+/* Other -off variants. */
+#define list_entry_off(n, type, off)		\
+	((type *)list_node_from_off_((n), (off)))
+
+#define list_head_off(h, type, off)		\
+	((type *)list_head_off((h), (off)))
+
+#define list_tail_off(h, type, off)		\
+	((type *)list_tail_((h), (off)))
+
+#define list_add_off(h, n, off)                 \
+	list_add((h), list_node_from_off_((n), (off)))
+
+#define list_del_off(n, off)                    \
+	list_del(list_node_from_off_((n), (off)))
+
+#define list_del_from_off(h, n, off)			\
+	list_del_from(h, list_node_from_off_((n), (off)))
+
+/* Offset helper functions so we only single-evaluate. */
+static inline void *list_node_to_off_(struct list_node *node, size_t off)
+{
+	return (void *)((char *)node - off);
+}
+static inline struct list_node *list_node_from_off_(void *ptr, size_t off)
+{
+	return (struct list_node *)((char *)ptr + off);
+}
+
+/* Get the offset of the member, but make sure it's a list_node. */
+#define list_off_(type, member)					\
+	(container_off(type, member) +				\
+	 check_type(((type *)0)->member, struct list_node))
+
+#define list_off_var_(var, member)			\
+	(container_off_var(var, member) +		\
+	 check_type(var->member, struct list_node))
+
+#if HAVE_TYPEOF
+#define list_typeof(var) typeof(var)
+#else
+#define list_typeof(var) void *
+#endif
+
+/* Returns member, or NULL if at end of list. */
+static inline void *list_entry_or_null(const struct list_head *h,
+				       const struct list_node *n,
+				       size_t off)
+{
+	if (n == &h->n)
+		return NULL;
+	return (char *)n - off;
+}
+#endif /* CCAN_LIST_H */
diff --git a/ccan/str/str.h b/ccan/str/str.h
new file mode 100644
index 0000000000..9a9da9cd3f
--- /dev/null
+++ b/ccan/str/str.h
@@ -0,0 +1,16 @@
+/* CC0 (Public domain) - see ccan/licenses/CC0 file for details */
+#ifndef CCAN_STR_H
+#define CCAN_STR_H
+/**
+ * stringify - Turn expression into a string literal
+ * @expr: any C expression
+ *
+ * Example:
+ *	#define PRINT_COND_IF_FALSE(cond) \
+ *		((cond) || printf("%s is false!", stringify(cond)))
+ */
+#define stringify(expr)		stringify_1(expr)
+/* Double-indirection required to stringify expansions */
+#define stringify_1(expr)	#expr
+
+#endif /* CCAN_STR_H */
diff --git a/class.c b/class.c
index 89becccb54..682a21d488 100644
--- a/class.c
+++ b/class.c
@@ -9,242 +9,694 @@
 
 **********************************************************************/
 
-#include "ruby/ruby.h"
-#include "ruby/st.h"
-#include "node.h"
+/*!
+ * \defgroup class Classes and their hierarchy.
+ * \par Terminology
+ * - class: same as in Ruby.
+ * - singleton class: class for a particular object
+ * - eigenclass: = singleton class
+ * - metaclass: class of a class. metaclass is a kind of singleton class.
+ * - metametaclass: class of a metaclass.
+ * - meta^(n)-class: class of a meta^(n-1)-class.
+ * - attached object: A singleton class knows its unique instance.
+ *   The instance is called the attached object for the singleton class.
+ * \{
+ */
+
+#include "ruby/internal/config.h"
 #include <ctype.h>
 
-extern st_table *rb_class_tbl;
+#include "gc.h"
+#include "constant.h"
+#include "id_table.h"
+#include "internal.h"
+#include "internal/class.h"
+#include "internal/eval.h"
+#include "internal/hash.h"
+#include "internal/object.h"
+#include "internal/string.h"
+#include "internal/variable.h"
+#include "ruby/st.h"
+#include "vm_core.h"
+
+#define id_attached id__attached__
+
+#define METACLASS_OF(k) RBASIC(k)->klass
+#define SET_METACLASS_OF(k, cls) RBASIC_SET_CLASS(k, cls)
+
+void
+rb_class_subclass_add(VALUE super, VALUE klass)
+{
+    rb_subclass_entry_t *entry, *head;
+
+    if (super && super != Qundef) {
+	entry = ALLOC(rb_subclass_entry_t);
+	entry->klass = klass;
+	entry->next = NULL;
+
+	head = RCLASS_EXT(super)->subclasses;
+	if (head) {
+	    entry->next = head;
+	    RCLASS_EXT(head->klass)->parent_subclasses = &entry->next;
+	}
+
+	RCLASS_EXT(super)->subclasses = entry;
+	RCLASS_EXT(klass)->parent_subclasses = &RCLASS_EXT(super)->subclasses;
+    }
+}
+
+static void
+rb_module_add_to_subclasses_list(VALUE module, VALUE iclass)
+{
+    rb_subclass_entry_t *entry, *head;
 
+    entry = ALLOC(rb_subclass_entry_t);
+    entry->klass = iclass;
+    entry->next = NULL;
+
+    head = RCLASS_EXT(module)->subclasses;
+    if (head) {
+	entry->next = head;
+	RCLASS_EXT(head->klass)->module_subclasses = &entry->next;
+    }
+
+    RCLASS_EXT(module)->subclasses = entry;
+    RCLASS_EXT(iclass)->module_subclasses = &RCLASS_EXT(module)->subclasses;
+}
+
+void
+rb_class_remove_from_super_subclasses(VALUE klass)
+{
+    rb_subclass_entry_t *entry;
+
+    if (RCLASS_EXT(klass)->parent_subclasses) {
+	entry = *RCLASS_EXT(klass)->parent_subclasses;
+
+	*RCLASS_EXT(klass)->parent_subclasses = entry->next;
+	if (entry->next) {
+	    RCLASS_EXT(entry->next->klass)->parent_subclasses = RCLASS_EXT(klass)->parent_subclasses;
+	}
+	xfree(entry);
+    }
+
+    RCLASS_EXT(klass)->parent_subclasses = NULL;
+}
+
+void
+rb_class_remove_from_module_subclasses(VALUE klass)
+{
+    rb_subclass_entry_t *entry;
+
+    if (RCLASS_EXT(klass)->module_subclasses) {
+	entry = *RCLASS_EXT(klass)->module_subclasses;
+	*RCLASS_EXT(klass)->module_subclasses = entry->next;
+
+	if (entry->next) {
+	    RCLASS_EXT(entry->next->klass)->module_subclasses = RCLASS_EXT(klass)->module_subclasses;
+	}
+
+	xfree(entry);
+    }
+
+    RCLASS_EXT(klass)->module_subclasses = NULL;
+}
+
+void
+rb_class_foreach_subclass(VALUE klass, void (*f)(VALUE, VALUE), VALUE arg)
+{
+    rb_subclass_entry_t *cur = RCLASS_EXT(klass)->subclasses;
+
+    /* do not be tempted to simplify this loop into a for loop, the order of
+       operations is important here if `f` modifies the linked list */
+    while (cur) {
+	VALUE curklass = cur->klass;
+	cur = cur->next;
+	f(curklass, arg);
+    }
+}
+
+static void
+class_detach_subclasses(VALUE klass, VALUE arg)
+{
+    rb_class_remove_from_super_subclasses(klass);
+}
+
+void
+rb_class_detach_subclasses(VALUE klass)
+{
+    rb_class_foreach_subclass(klass, class_detach_subclasses, Qnil);
+}
+
+static void
+class_detach_module_subclasses(VALUE klass, VALUE arg)
+{
+    rb_class_remove_from_module_subclasses(klass);
+}
+
+void
+rb_class_detach_module_subclasses(VALUE klass)
+{
+    rb_class_foreach_subclass(klass, class_detach_module_subclasses, Qnil);
+}
+
+/**
+ * Allocates a struct RClass for a new class.
+ *
+ * \param flags     initial value for basic.flags of the returned class.
+ * \param klass     the class of the returned class.
+ * \return          an uninitialized Class object.
+ * \pre  \p klass must refer \c Class class or an ancestor of Class.
+ * \pre  \code (flags | T_CLASS) != 0  \endcode
+ * \post the returned class can safely be \c #initialize 'd.
+ *
+ * \note this function is not Class#allocate.
+ */
 static VALUE
 class_alloc(VALUE flags, VALUE klass)
 {
-    rb_classext_t *ext = ALLOC(rb_classext_t);
-    NEWOBJ(obj, struct RClass);
-    OBJSETUP(obj, klass, flags);
-    obj->ptr = ext;
-    RCLASS_IV_TBL(obj) = 0;
-    RCLASS_M_TBL(obj) = 0;
-    RCLASS_SUPER(obj) = 0;
-    RCLASS_IV_INDEX_TBL(obj) = 0;
+    NEWOBJ_OF(obj, struct RClass, klass, (flags & T_MASK) | FL_PROMOTED1 /* start from age == 2 */ | (RGENGC_WB_PROTECTED_CLASS ? FL_WB_PROTECTED : 0));
+    obj->ptr = ZALLOC(rb_classext_t);
+    /* ZALLOC
+      RCLASS_IV_TBL(obj) = 0;
+      RCLASS_CONST_TBL(obj) = 0;
+      RCLASS_M_TBL(obj) = 0;
+      RCLASS_IV_INDEX_TBL(obj) = 0;
+      RCLASS_SET_SUPER((VALUE)obj, 0);
+      RCLASS_EXT(obj)->subclasses = NULL;
+      RCLASS_EXT(obj)->parent_subclasses = NULL;
+      RCLASS_EXT(obj)->module_subclasses = NULL;
+     */
+    RCLASS_SET_ORIGIN((VALUE)obj, (VALUE)obj);
+    RCLASS_SERIAL(obj) = rb_next_class_serial();
+    RB_OBJ_WRITE(obj, &RCLASS_REFINED_CLASS(obj), Qnil);
+    RCLASS_EXT(obj)->allocator = 0;
+
     return (VALUE)obj;
 }
 
+static void
+RCLASS_M_TBL_INIT(VALUE c)
+{
+    RCLASS_M_TBL(c) = rb_id_table_create(0);
+}
+
+/*!
+ * A utility function that wraps class_alloc.
+ *
+ * allocates a class and initializes safely.
+ * \param super     a class from which the new class derives.
+ * \return          a class object.
+ * \pre  \a super must be a class.
+ * \post the metaclass of the new class is Class.
+ */
 VALUE
 rb_class_boot(VALUE super)
 {
     VALUE klass = class_alloc(T_CLASS, rb_cClass);
 
-    RCLASS_SUPER(klass) = super;
-    RCLASS_M_TBL(klass) = st_init_numtable();
+    RCLASS_SET_SUPER(klass, super);
+    RCLASS_M_TBL_INIT(klass);
 
-    OBJ_INFECT(klass, super);
     return (VALUE)klass;
 }
 
+
+/*!
+ * Ensures a class can be derived from super.
+ *
+ * \param super a reference to an object.
+ * \exception TypeError if \a super is not a Class or \a super is a singleton class.
+ */
 void
 rb_check_inheritable(VALUE super)
 {
-    if (TYPE(super) != T_CLASS) {
-	rb_raise(rb_eTypeError, "superclass must be a Class (%s given)",
-		 rb_obj_classname(super));
+    if (!RB_TYPE_P(super, T_CLASS)) {
+        rb_raise(rb_eTypeError, "superclass must be an instance of Class (given an instance of %"PRIsVALUE")",
+		 rb_obj_class(super));
     }
     if (RBASIC(super)->flags & FL_SINGLETON) {
 	rb_raise(rb_eTypeError, "can't make subclass of singleton class");
     }
+    if (super == rb_cClass) {
+	rb_raise(rb_eTypeError, "can't make subclass of Class");
+    }
 }
 
+
+/*!
+ * Creates a new class.
+ * \param super     a class from which the new class derives.
+ * \exception TypeError \a super is not inheritable.
+ * \exception TypeError \a super is the Class class.
+ */
 VALUE
 rb_class_new(VALUE super)
 {
     Check_Type(super, T_CLASS);
     rb_check_inheritable(super);
-    if (super == rb_cClass) {
-	rb_raise(rb_eTypeError, "can't make subclass of Class");
-    }
     return rb_class_boot(super);
 }
 
-struct clone_method_data {
-    st_table *tbl;
-    VALUE klass;
+static void
+clone_method(VALUE old_klass, VALUE new_klass, ID mid, const rb_method_entry_t *me)
+{
+    if (me->def->type == VM_METHOD_TYPE_ISEQ) {
+	rb_cref_t *new_cref;
+	rb_vm_rewrite_cref(me->def->body.iseq.cref, old_klass, new_klass, &new_cref);
+	rb_add_method_iseq(new_klass, mid, me->def->body.iseq.iseqptr, new_cref, METHOD_ENTRY_VISI(me));
+    }
+    else {
+	rb_method_entry_set(new_klass, mid, me, METHOD_ENTRY_VISI(me));
+    }
+}
+
+struct clone_method_arg {
+    VALUE new_klass;
+    VALUE old_klass;
 };
 
-VALUE rb_iseq_clone(VALUE iseqval, VALUE newcbase);
+static enum rb_id_table_iterator_result
+clone_method_i(ID key, VALUE value, void *data)
+{
+    const struct clone_method_arg *arg = (struct clone_method_arg *)data;
+    clone_method(arg->old_klass, arg->new_klass, key, (const rb_method_entry_t *)value);
+    return ID_TABLE_CONTINUE;
+}
+
+struct clone_const_arg {
+    VALUE klass;
+    struct rb_id_table *tbl;
+};
 
 static int
-clone_method(ID mid, NODE *body, struct clone_method_data *data)
+clone_const(ID key, const rb_const_entry_t *ce, struct clone_const_arg *arg)
 {
-    if (body == 0) {
-	st_insert(data->tbl, mid, 0);
-    }
-    else {
-	NODE *fbody = body->nd_body->nd_body;
+    rb_const_entry_t *nce = ALLOC(rb_const_entry_t);
+    MEMCPY(nce, ce, rb_const_entry_t, 1);
+    RB_OBJ_WRITTEN(arg->klass, Qundef, ce->value);
+    RB_OBJ_WRITTEN(arg->klass, Qundef, ce->file);
 
-	if (nd_type(fbody) == RUBY_VM_METHOD_NODE) {
-	    fbody = NEW_NODE(RUBY_VM_METHOD_NODE, 0, 
-			     rb_iseq_clone((VALUE)fbody->nd_body, data->klass),
-			     0);
-	}
-	st_insert(data->tbl, mid,
-		  (st_data_t)
-		  NEW_FBODY(
-		      NEW_METHOD(fbody,
-				 data->klass, /* TODO */
-				 body->nd_body->nd_noex),
-		      0));
+    rb_id_table_insert(arg->tbl, key, (VALUE)nce);
+    return ID_TABLE_CONTINUE;
+}
+
+static enum rb_id_table_iterator_result
+clone_const_i(ID key, VALUE value, void *data)
+{
+    return clone_const(key, (const rb_const_entry_t *)value, data);
+}
+
+static void
+class_init_copy_check(VALUE clone, VALUE orig)
+{
+    if (orig == rb_cBasicObject) {
+	rb_raise(rb_eTypeError, "can't copy the root class");
+    }
+    if (RCLASS_SUPER(clone) != 0 || clone == rb_cBasicObject) {
+	rb_raise(rb_eTypeError, "already initialized class");
+    }
+    if (FL_TEST(orig, FL_SINGLETON)) {
+	rb_raise(rb_eTypeError, "can't copy singleton class");
     }
-    return ST_CONTINUE;
 }
 
-/* :nodoc: */
-VALUE
-rb_mod_init_copy(VALUE clone, VALUE orig)
+static void
+copy_tables(VALUE clone, VALUE orig)
 {
-    rb_obj_init_copy(clone, orig);
-    if (!FL_TEST(CLASS_OF(clone), FL_SINGLETON)) {
-	RBASIC(clone)->klass = rb_singleton_class_clone(orig);
+    if (RCLASS_IV_TBL(clone)) {
+	st_free_table(RCLASS_IV_TBL(clone));
+	RCLASS_IV_TBL(clone) = 0;
+    }
+    if (RCLASS_CONST_TBL(clone)) {
+	rb_free_const_table(RCLASS_CONST_TBL(clone));
+	RCLASS_CONST_TBL(clone) = 0;
     }
-    RCLASS_SUPER(clone) = RCLASS_SUPER(orig);
+    RCLASS_M_TBL(clone) = 0;
     if (RCLASS_IV_TBL(orig)) {
-	ID id;
+	st_data_t id;
 
-	RCLASS_IV_TBL(clone) = st_copy(RCLASS_IV_TBL(orig));
+	rb_iv_tbl_copy(clone, orig);
+	CONST_ID(id, "__tmp_classpath__");
+	st_delete(RCLASS_IV_TBL(clone), &id, 0);
 	CONST_ID(id, "__classpath__");
-	st_delete(RCLASS_IV_TBL(clone), (st_data_t*)&id, 0);
+	st_delete(RCLASS_IV_TBL(clone), &id, 0);
 	CONST_ID(id, "__classid__");
-	st_delete(RCLASS_IV_TBL(clone), (st_data_t*)&id, 0);
-    }
-    if (RCLASS_M_TBL(orig)) {
-	struct clone_method_data data;
-	data.tbl = RCLASS_M_TBL(clone) = st_init_numtable();
-	data.klass = clone;
-	st_foreach(RCLASS_M_TBL(orig), clone_method,
-	  (st_data_t)&data);
+	st_delete(RCLASS_IV_TBL(clone), &id, 0);
     }
+    if (RCLASS_CONST_TBL(orig)) {
+	struct clone_const_arg arg;
 
-    return clone;
+	arg.tbl = RCLASS_CONST_TBL(clone) = rb_id_table_create(0);
+	arg.klass = clone;
+	rb_id_table_foreach(RCLASS_CONST_TBL(orig), clone_const_i, &arg);
+    }
 }
 
+static void ensure_origin(VALUE klass);
+
 /* :nodoc: */
 VALUE
-rb_class_init_copy(VALUE clone, VALUE orig)
+rb_mod_init_copy(VALUE clone, VALUE orig)
 {
-    if (RCLASS_SUPER(clone) != 0) {
-	rb_raise(rb_eTypeError, "already initialized class");
+    if (RB_TYPE_P(clone, T_CLASS)) {
+        class_init_copy_check(clone, orig);
     }
-    if (FL_TEST(orig, FL_SINGLETON)) {
-	rb_raise(rb_eTypeError, "can't copy singleton class");
+    if (!OBJ_INIT_COPY(clone, orig)) return clone;
+
+    /* cloned flag is refer at constant inline cache
+     * see vm_get_const_key_cref() in vm_insnhelper.c
+     */
+    FL_SET(clone, RCLASS_CLONED);
+    FL_SET(orig , RCLASS_CLONED);
+
+    if (!FL_TEST(CLASS_OF(clone), FL_SINGLETON)) {
+        RBASIC_SET_CLASS(clone, rb_singleton_class_clone(orig));
+        rb_singleton_class_attached(RBASIC(clone)->klass, (VALUE)clone);
+    }
+    RCLASS_EXT(clone)->allocator = RCLASS_EXT(orig)->allocator;
+    copy_tables(clone, orig);
+    if (RCLASS_M_TBL(orig)) {
+	struct clone_method_arg arg;
+	arg.old_klass = orig;
+	arg.new_klass = clone;
+	RCLASS_M_TBL_INIT(clone);
+	rb_id_table_foreach(RCLASS_M_TBL(orig), clone_method_i, &arg);
     }
-    return rb_mod_init_copy(clone, orig);
+
+    if (RCLASS_ORIGIN(orig) == orig) {
+        RCLASS_SET_SUPER(clone, RCLASS_SUPER(orig));
+    }
+    else {
+        VALUE p = RCLASS_SUPER(orig);
+        VALUE orig_origin = RCLASS_ORIGIN(orig);
+        VALUE prev_clone_p = clone;
+        VALUE origin_stack = rb_ary_tmp_new(2);
+        VALUE origin[2];
+        VALUE clone_p = 0;
+        long origin_len;
+        int add_subclass;
+        VALUE clone_origin;
+
+        ensure_origin(clone);
+        clone_origin = RCLASS_ORIGIN(clone);
+
+        while (p && p != orig_origin) {
+            if (BUILTIN_TYPE(p) != T_ICLASS) {
+                rb_bug("non iclass between module/class and origin");
+            }
+            clone_p = class_alloc(RBASIC(p)->flags, RBASIC(p)->klass);
+            RCLASS_SET_SUPER(prev_clone_p, clone_p);
+            prev_clone_p = clone_p;
+            RCLASS_M_TBL(clone_p) = RCLASS_M_TBL(p);
+            RCLASS_CONST_TBL(clone_p) = RCLASS_CONST_TBL(p);
+            RCLASS_IV_TBL(clone_p) = RCLASS_IV_TBL(p);
+            RCLASS_EXT(clone_p)->allocator = RCLASS_EXT(p)->allocator;
+            if (RB_TYPE_P(clone, T_CLASS)) {
+                RCLASS_SET_INCLUDER(clone_p, clone);
+            }
+            add_subclass = TRUE;
+            if (p != RCLASS_ORIGIN(p)) {
+                origin[0] = clone_p;
+                origin[1] = RCLASS_ORIGIN(p);
+                rb_ary_cat(origin_stack, origin, 2);
+            }
+            else if ((origin_len = RARRAY_LEN(origin_stack)) > 1 &&
+                     RARRAY_AREF(origin_stack, origin_len - 1) == p) {
+                RCLASS_SET_ORIGIN(RARRAY_AREF(origin_stack, (origin_len -= 2)), clone_p);
+                RICLASS_SET_ORIGIN_SHARED_MTBL(clone_p);
+                rb_ary_resize(origin_stack, origin_len);
+                add_subclass = FALSE;
+            }
+            if (add_subclass) {
+                rb_module_add_to_subclasses_list(RBASIC(p)->klass, clone_p);
+            }
+            p = RCLASS_SUPER(p);
+        }
+
+        if (p == orig_origin) {
+            if (clone_p) {
+                RCLASS_SET_SUPER(clone_p, clone_origin);
+                RCLASS_SET_SUPER(clone_origin, RCLASS_SUPER(orig_origin));
+            }
+            copy_tables(clone_origin, orig_origin);
+            if (RCLASS_M_TBL(orig_origin)) {
+                struct clone_method_arg arg;
+                arg.old_klass = orig;
+                arg.new_klass = clone;
+                RCLASS_M_TBL_INIT(clone_origin);
+                rb_id_table_foreach(RCLASS_M_TBL(orig_origin), clone_method_i, &arg);
+            }
+        }
+        else {
+            rb_bug("no origin for class that has origin");
+        }
+    }
+
+    return clone;
 }
 
 VALUE
 rb_singleton_class_clone(VALUE obj)
 {
-    VALUE klass = RBASIC(obj)->klass;
+    return rb_singleton_class_clone_and_attach(obj, Qundef);
+}
 
-    if (!FL_TEST(klass, FL_SINGLETON))
-	return klass;
+// Clone and return the singleton class of `obj` if it has been created and is attached to `obj`.
+VALUE
+rb_singleton_class_clone_and_attach(VALUE obj, VALUE attach)
+{
+    const VALUE klass = RBASIC(obj)->klass;
+
+    // Note that `rb_singleton_class()` can create situations where `klass` is
+    // attached to an object other than `obj`. In which case `obj` does not have
+    // a material singleton class attached yet and there is no singleton class
+    // to clone.
+    if (!(FL_TEST(klass, FL_SINGLETON) && rb_attr_get(klass, id_attached) == obj)) {
+        // nothing to clone
+        return klass;
+    }
     else {
-	struct clone_method_data data;
 	/* copy singleton(unnamed) class */
-        VALUE clone = class_alloc(RBASIC(klass)->flags, 0);
+        bool klass_of_clone_is_new;
+	VALUE clone = class_alloc(RBASIC(klass)->flags, 0);
 
 	if (BUILTIN_TYPE(obj) == T_CLASS) {
-	    RBASIC(clone)->klass = (VALUE)clone;
+            klass_of_clone_is_new = true;
+	    RBASIC_SET_CLASS(clone, clone);
 	}
 	else {
-	    RBASIC(clone)->klass = rb_singleton_class_clone(klass);
+            VALUE klass_metaclass_clone = rb_singleton_class_clone(klass);
+            // When `METACLASS_OF(klass) == klass_metaclass_clone`, it means the
+            // recursive call did not clone `METACLASS_OF(klass)`.
+            klass_of_clone_is_new = (METACLASS_OF(klass) != klass_metaclass_clone);
+            RBASIC_SET_CLASS(clone, klass_metaclass_clone);
 	}
 
-	RCLASS_SUPER(clone) = RCLASS_SUPER(klass);
+	RCLASS_SET_SUPER(clone, RCLASS_SUPER(klass));
+	RCLASS_EXT(clone)->allocator = RCLASS_EXT(klass)->allocator;
 	if (RCLASS_IV_TBL(klass)) {
-	    RCLASS_IV_TBL(clone) = st_copy(RCLASS_IV_TBL(klass));
-	}
-	RCLASS_M_TBL(clone) = st_init_numtable();
-	data.tbl = RCLASS_M_TBL(clone);
-	data.klass = (VALUE)clone;
-	st_foreach(RCLASS_M_TBL(klass), clone_method,
-	  (st_data_t)&data);
-	rb_singleton_class_attached(RBASIC(clone)->klass, (VALUE)clone);
+	    rb_iv_tbl_copy(clone, klass);
+	}
+	if (RCLASS_CONST_TBL(klass)) {
+	    struct clone_const_arg arg;
+	    arg.tbl = RCLASS_CONST_TBL(clone) = rb_id_table_create(0);
+	    arg.klass = clone;
+	    rb_id_table_foreach(RCLASS_CONST_TBL(klass), clone_const_i, &arg);
+	}
+	if (attach != Qundef) {
+	    rb_singleton_class_attached(clone, attach);
+	}
+	RCLASS_M_TBL_INIT(clone);
+	{
+	    struct clone_method_arg arg;
+	    arg.old_klass = klass;
+	    arg.new_klass = clone;
+	    rb_id_table_foreach(RCLASS_M_TBL(klass), clone_method_i, &arg);
+	}
+        if (klass_of_clone_is_new) {
+            rb_singleton_class_attached(RBASIC(clone)->klass, clone);
+        }
 	FL_SET(clone, FL_SINGLETON);
-	return (VALUE)clone;
+
+	return clone;
     }
 }
 
+/*!
+ * Attach a object to a singleton class.
+ * @pre \a klass is the singleton class of \a obj.
+ */
 void
 rb_singleton_class_attached(VALUE klass, VALUE obj)
 {
     if (FL_TEST(klass, FL_SINGLETON)) {
-	ID attached;
 	if (!RCLASS_IV_TBL(klass)) {
 	    RCLASS_IV_TBL(klass) = st_init_numtable();
 	}
-	CONST_ID(attached, "__attached__");
-	st_insert(RCLASS_IV_TBL(klass), attached, obj);
+	rb_class_ivar_set(klass, id_attached, obj);
     }
 }
 
+/*!
+ * whether k is a meta^(n)-class of Class class
+ * @retval 1 if \a k is a meta^(n)-class of Class class (n >= 0)
+ * @retval 0 otherwise
+ */
+#define META_CLASS_OF_CLASS_CLASS_P(k)  (METACLASS_OF(k) == (k))
 
-static VALUE
-make_metametaclass(VALUE metaclass)
+static int
+rb_singleton_class_has_metaclass_p(VALUE sklass)
+{
+    return rb_attr_get(METACLASS_OF(sklass), id_attached) == sklass;
+}
+
+int
+rb_singleton_class_internal_p(VALUE sklass)
 {
-    VALUE metametaclass, super_of_metaclass;
+    return (RB_TYPE_P(rb_attr_get(sklass, id_attached), T_CLASS) &&
+	    !rb_singleton_class_has_metaclass_p(sklass));
+}
 
-    if (RBASIC(metaclass)->klass == metaclass) { /* for meta^(n)-class of Class */
-        metametaclass = rb_class_boot(Qnil);
-        RBASIC(metametaclass)->klass = metametaclass;
+/*!
+ * whether k has a metaclass
+ * @retval 1 if \a k has a metaclass
+ * @retval 0 otherwise
+ */
+#define HAVE_METACLASS_P(k) \
+    (FL_TEST(METACLASS_OF(k), FL_SINGLETON) && \
+     rb_singleton_class_has_metaclass_p(k))
+
+/*!
+ * ensures \a klass belongs to its own eigenclass.
+ * @return the eigenclass of \a klass
+ * @post \a klass belongs to the returned eigenclass.
+ *       i.e. the attached object of the eigenclass is \a klass.
+ * @note this macro creates a new eigenclass if necessary.
+ */
+#define ENSURE_EIGENCLASS(klass) \
+    (HAVE_METACLASS_P(klass) ? METACLASS_OF(klass) : make_metaclass(klass))
+
+
+/*!
+ * Creates a metaclass of \a klass
+ * \param klass     a class
+ * \return          created metaclass for the class
+ * \pre \a klass is a Class object
+ * \pre \a klass has no singleton class.
+ * \post the class of \a klass is the returned class.
+ * \post the returned class is meta^(n+1)-class when \a klass is a meta^(n)-klass for n >= 0
+ */
+static inline VALUE
+make_metaclass(VALUE klass)
+{
+    VALUE super;
+    VALUE metaclass = rb_class_boot(Qundef);
+
+    FL_SET(metaclass, FL_SINGLETON);
+    rb_singleton_class_attached(metaclass, klass);
+
+    if (META_CLASS_OF_CLASS_CLASS_P(klass)) {
+	SET_METACLASS_OF(klass, metaclass);
+	SET_METACLASS_OF(metaclass, metaclass);
     }
     else {
-        metametaclass = rb_class_boot(Qnil);
-        RBASIC(metametaclass)->klass = 
-            (RBASIC(RBASIC(metaclass)->klass)->klass == RBASIC(metaclass)->klass)
-            ? make_metametaclass(RBASIC(metaclass)->klass)
-            : RBASIC(RBASIC(metaclass)->klass)->klass;
+	VALUE tmp = METACLASS_OF(klass); /* for a meta^(n)-class klass, tmp is meta^(n)-class of Class class */
+	SET_METACLASS_OF(klass, metaclass);
+	SET_METACLASS_OF(metaclass, ENSURE_EIGENCLASS(tmp));
     }
 
-    FL_SET(metametaclass, FL_SINGLETON);
-    rb_singleton_class_attached(metametaclass, metaclass);
-    RBASIC(metaclass)->klass = metametaclass;
+    super = RCLASS_SUPER(klass);
+    while (RB_TYPE_P(super, T_ICLASS)) super = RCLASS_SUPER(super);
+    RCLASS_SET_SUPER(metaclass, super ? ENSURE_EIGENCLASS(super) : rb_cClass);
 
-    super_of_metaclass = RCLASS_SUPER(metaclass);
-    while (FL_TEST(super_of_metaclass, T_ICLASS)) {
-        super_of_metaclass = RCLASS_SUPER(super_of_metaclass);
-    }
-    RCLASS_SUPER(metametaclass) = 
-        rb_iv_get(RBASIC(super_of_metaclass)->klass, "__attached__") == super_of_metaclass
-        ? RBASIC(super_of_metaclass)->klass 
-        : make_metametaclass(super_of_metaclass);
-    OBJ_INFECT(metametaclass, RCLASS_SUPER(metametaclass));
+    return metaclass;
+}
 
-    return metametaclass;
+/*!
+ * Creates a singleton class for \a obj.
+ * \pre \a obj must not a immediate nor a special const.
+ * \pre \a obj must not a Class object.
+ * \pre \a obj has no singleton class.
+ */
+static inline VALUE
+make_singleton_class(VALUE obj)
+{
+    VALUE orig_class = RBASIC(obj)->klass;
+    VALUE klass = rb_class_boot(orig_class);
+
+    FL_SET(klass, FL_SINGLETON);
+    RBASIC_SET_CLASS(obj, klass);
+    rb_singleton_class_attached(klass, obj);
+
+    SET_METACLASS_OF(klass, METACLASS_OF(rb_class_real(orig_class)));
+    return klass;
 }
 
 
+static VALUE
+boot_defclass(const char *name, VALUE super)
+{
+    VALUE obj = rb_class_boot(super);
+    ID id = rb_intern(name);
+
+    rb_const_set((rb_cObject ? rb_cObject : obj), id, obj);
+    rb_vm_add_root_module(obj);
+    return obj;
+}
+
+void
+Init_class_hierarchy(void)
+{
+    rb_cBasicObject = boot_defclass("BasicObject", 0);
+    rb_cObject = boot_defclass("Object", rb_cBasicObject);
+    rb_gc_register_mark_object(rb_cObject);
+
+    /* resolve class name ASAP for order-independence */
+    rb_set_class_path_string(rb_cObject, rb_cObject, rb_fstring_lit("Object"));
+
+    rb_cModule = boot_defclass("Module", rb_cObject);
+    rb_cClass =  boot_defclass("Class",  rb_cModule);
+
+    rb_const_set(rb_cObject, rb_intern_const("BasicObject"), rb_cBasicObject);
+    RBASIC_SET_CLASS(rb_cClass, rb_cClass);
+    RBASIC_SET_CLASS(rb_cModule, rb_cClass);
+    RBASIC_SET_CLASS(rb_cObject, rb_cClass);
+    RBASIC_SET_CLASS(rb_cBasicObject, rb_cClass);
+}
+
+
+/*!
+ * \internal
+ * Creates a new *singleton class* for an object.
+ *
+ * \pre \a obj has no singleton class.
+ * \note DO NOT USE the function in an extension libraries. Use \ref rb_singleton_class.
+ * \param obj     An object.
+ * \param unused  ignored.
+ * \return        The singleton class of the object.
+ */
 VALUE
-rb_make_metaclass(VALUE obj, VALUE super)
+rb_make_metaclass(VALUE obj, VALUE unused)
 {
-    if (BUILTIN_TYPE(obj) == T_CLASS && FL_TEST(obj, FL_SINGLETON)) { /* obj is a metaclass */
-        return make_metametaclass(obj);
+    if (BUILTIN_TYPE(obj) == T_CLASS) {
+	return make_metaclass(obj);
     }
     else {
-	VALUE metasuper;
-	VALUE klass = rb_class_boot(super);
-
-	FL_SET(klass, FL_SINGLETON);
-	RBASIC(obj)->klass = klass;
-	rb_singleton_class_attached(klass, obj);
-
-	metasuper = RBASIC(rb_class_real(super))->klass;
-	/* metaclass of a superclass may be NULL at boot time */
-	if (metasuper) {
-	    RBASIC(klass)->klass = metasuper;
-	}
-	return klass;
+	return make_singleton_class(obj);
     }
 }
 
+
+/*!
+ * Defines a new class.
+ * \param id     ignored
+ * \param super  A class from which the new class will derive. NULL means \c Object class.
+ * \return       the created class
+ * \throw TypeError if super is not a \c Class object.
+ *
+ * \note the returned class will not be associated with \a id.
+ *       You must explicitly set a class name if necessary.
+ */
 VALUE
 rb_define_class_id(ID id, VALUE super)
 {
@@ -257,7 +709,16 @@ rb_define_class_id(ID id, VALUE super)
     return klass;
 }
 
-VALUE
+
+/*!
+ * Calls Class#inherited.
+ * \param super  A class which will be called #inherited.
+ *               NULL means Object class.
+ * \param klass  A Class object which derived from \a super
+ * \return the value \c Class#inherited's returns
+ * \pre Each of \a super and \a klass must be a \c Class object.
+ */
+MJIT_FUNC_EXPORTED VALUE
 rb_class_inherited(VALUE super, VALUE klass)
 {
     ID inherited;
@@ -266,6 +727,23 @@ rb_class_inherited(VALUE super, VALUE klass)
     return rb_funcall(super, inherited, 1, klass);
 }
 
+
+
+/*!
+ * Defines a top-level class.
+ * \param name   name of the class
+ * \param super  a class from which the new class will derive.
+ * \return the created class
+ * \throw TypeError if the constant name \a name is already taken but
+ *                  the constant is not a \c Class.
+ * \throw TypeError if the class is already defined but the class can not
+ *                  be reopened because its superclass is not \a super.
+ * \throw ArgumentError if the \a super is NULL.
+ * \post top-level constant named \a name refers the returned class.
+ *
+ * \note if a class named \a name is already defined and its superclass is
+ *       \a super, the function just returns the defined class.
+ */
 VALUE
 rb_define_class(const char *name, VALUE super)
 {
@@ -275,51 +753,101 @@ rb_define_class(const char *name, VALUE super)
     id = rb_intern(name);
     if (rb_const_defined(rb_cObject, id)) {
 	klass = rb_const_get(rb_cObject, id);
-	if (TYPE(klass) != T_CLASS) {
-	    rb_raise(rb_eTypeError, "%s is not a class", name);
+	if (!RB_TYPE_P(klass, T_CLASS)) {
+	    rb_raise(rb_eTypeError, "%s is not a class (%"PRIsVALUE")",
+		     name, rb_obj_class(klass));
 	}
 	if (rb_class_real(RCLASS_SUPER(klass)) != super) {
-	    rb_name_error(id, "%s is already defined", name);
+	    rb_raise(rb_eTypeError, "superclass mismatch for class %s", name);
 	}
+
+        /* Class may have been defined in Ruby and not pin-rooted */
+        rb_vm_add_root_module(klass);
 	return klass;
     }
     if (!super) {
-	rb_warn("no super class for `%s', Object assumed", name);
+	rb_raise(rb_eArgError, "no super class for `%s'", name);
     }
     klass = rb_define_class_id(id, super);
-    st_add_direct(rb_class_tbl, id, klass);
-    rb_name_class(klass, id);
+    rb_vm_add_root_module(klass);
     rb_const_set(rb_cObject, id, klass);
     rb_class_inherited(super, klass);
 
     return klass;
 }
 
+
+/*!
+ * Defines a class under the namespace of \a outer.
+ * \param outer  a class which contains the new class.
+ * \param name   name of the new class
+ * \param super  a class from which the new class will derive.
+ *               NULL means \c Object class.
+ * \return the created class
+ * \throw TypeError if the constant name \a name is already taken but
+ *                  the constant is not a \c Class.
+ * \throw TypeError if the class is already defined but the class can not
+ *                  be reopened because its superclass is not \a super.
+ * \post top-level constant named \a name refers the returned class.
+ *
+ * \note if a class named \a name is already defined and its superclass is
+ *       \a super, the function just returns the defined class.
+ */
 VALUE
 rb_define_class_under(VALUE outer, const char *name, VALUE super)
 {
+    return rb_define_class_id_under(outer, rb_intern(name), super);
+}
+
+
+/*!
+ * Defines a class under the namespace of \a outer.
+ * \param outer  a class which contains the new class.
+ * \param id     name of the new class
+ * \param super  a class from which the new class will derive.
+ *               NULL means \c Object class.
+ * \return the created class
+ * \throw TypeError if the constant name \a name is already taken but
+ *                  the constant is not a \c Class.
+ * \throw TypeError if the class is already defined but the class can not
+ *                  be reopened because its superclass is not \a super.
+ * \post top-level constant named \a name refers the returned class.
+ *
+ * \note if a class named \a name is already defined and its superclass is
+ *       \a super, the function just returns the defined class.
+ */
+VALUE
+rb_define_class_id_under(VALUE outer, ID id, VALUE super)
+{
     VALUE klass;
-    ID id;
 
-    id = rb_intern(name);
     if (rb_const_defined_at(outer, id)) {
 	klass = rb_const_get_at(outer, id);
-	if (TYPE(klass) != T_CLASS) {
-	    rb_raise(rb_eTypeError, "%s is not a class", name);
+	if (!RB_TYPE_P(klass, T_CLASS)) {
+	    rb_raise(rb_eTypeError, "%"PRIsVALUE"::%"PRIsVALUE" is not a class"
+		     " (%"PRIsVALUE")",
+		     outer, rb_id2str(id), rb_obj_class(klass));
 	}
 	if (rb_class_real(RCLASS_SUPER(klass)) != super) {
-	    rb_name_error(id, "%s is already defined", name);
+	    rb_raise(rb_eTypeError, "superclass mismatch for class "
+		     "%"PRIsVALUE"::%"PRIsVALUE""
+		     " (%"PRIsVALUE" is given but was %"PRIsVALUE")",
+		     outer, rb_id2str(id), RCLASS_SUPER(klass), super);
 	}
+        /* Class may have been defined in Ruby and not pin-rooted */
+        rb_vm_add_root_module(klass);
+
 	return klass;
     }
     if (!super) {
-	rb_warn("no super class for `%s::%s', Object assumed",
-		rb_class2name(outer), name);
+	rb_raise(rb_eArgError, "no super class for `%"PRIsVALUE"::%"PRIsVALUE"'",
+		 rb_class_path(outer), rb_id2str(id));
     }
     klass = rb_define_class_id(id, super);
-    rb_set_class_path(klass, outer, name);
+    rb_set_class_path_string(klass, outer, rb_id2str(id));
     rb_const_set(outer, id, klass);
     rb_class_inherited(super, klass);
+    rb_vm_add_root_module(klass);
 
     return klass;
 }
@@ -328,21 +856,15 @@ VALUE
 rb_module_new(void)
 {
     VALUE mdl = class_alloc(T_MODULE, rb_cModule);
-
-    RCLASS_M_TBL(mdl) = st_init_numtable();
-
+    RCLASS_M_TBL_INIT(mdl);
     return (VALUE)mdl;
 }
 
+// Kept for compatibility. Use rb_module_new() instead.
 VALUE
 rb_define_module_id(ID id)
 {
-    VALUE mdl;
-
-    mdl = rb_module_new();
-    rb_name_class(mdl, id);
-
-    return mdl;
+    return rb_module_new();
 }
 
 VALUE
@@ -354,12 +876,16 @@ rb_define_module(const char *name)
     id = rb_intern(name);
     if (rb_const_defined(rb_cObject, id)) {
 	module = rb_const_get(rb_cObject, id);
-	if (TYPE(module) == T_MODULE)
-	    return module;
-	rb_raise(rb_eTypeError, "%s is not a module", rb_obj_classname(module));
+	if (!RB_TYPE_P(module, T_MODULE)) {
+	    rb_raise(rb_eTypeError, "%s is not a module (%"PRIsVALUE")",
+		     name, rb_obj_class(module));
+	}
+        /* Module may have been defined in Ruby and not pin-rooted */
+        rb_vm_add_root_module(module);
+	return module;
     }
-    module = rb_define_module_id(id);
-    st_add_direct(rb_class_tbl, id, module);
+    module = rb_module_new();
+    rb_vm_add_root_module(module);
     rb_const_set(rb_cObject, id, module);
 
     return module;
@@ -368,111 +894,339 @@ rb_define_module(const char *name)
 VALUE
 rb_define_module_under(VALUE outer, const char *name)
 {
+    return rb_define_module_id_under(outer, rb_intern(name));
+}
+
+VALUE
+rb_define_module_id_under(VALUE outer, ID id)
+{
     VALUE module;
-    ID id;
 
-    id = rb_intern(name);
     if (rb_const_defined_at(outer, id)) {
 	module = rb_const_get_at(outer, id);
-	if (TYPE(module) == T_MODULE)
-	    return module;
-	rb_raise(rb_eTypeError, "%s::%s is not a module",
-		 rb_class2name(outer), rb_obj_classname(module));
+	if (!RB_TYPE_P(module, T_MODULE)) {
+	    rb_raise(rb_eTypeError, "%"PRIsVALUE"::%"PRIsVALUE" is not a module"
+		     " (%"PRIsVALUE")",
+		     outer, rb_id2str(id), rb_obj_class(module));
+	}
+	return module;
     }
-    module = rb_define_module_id(id);
+    module = rb_module_new();
     rb_const_set(outer, id, module);
-    rb_set_class_path(module, outer, name);
+    rb_set_class_path_string(module, outer, rb_id2str(id));
+    rb_gc_register_mark_object(module);
 
     return module;
 }
 
-static VALUE
-include_class_new(VALUE module, VALUE super)
+VALUE
+rb_include_class_new(VALUE module, VALUE super)
 {
     VALUE klass = class_alloc(T_ICLASS, rb_cClass);
 
+    RCLASS_M_TBL(klass) = RCLASS_M_TBL(module);
+
+    RCLASS_SET_ORIGIN(klass, klass);
     if (BUILTIN_TYPE(module) == T_ICLASS) {
 	module = RBASIC(module)->klass;
     }
+    RUBY_ASSERT(!RB_TYPE_P(module, T_ICLASS));
     if (!RCLASS_IV_TBL(module)) {
 	RCLASS_IV_TBL(module) = st_init_numtable();
     }
-    RCLASS_IV_TBL(klass) = RCLASS_IV_TBL(module);
-    RCLASS_M_TBL(klass) = RCLASS_M_TBL(module);
-    RCLASS_SUPER(klass) = super;
-    if (TYPE(module) == T_ICLASS) {
-	RBASIC(klass)->klass = RBASIC(module)->klass;
-    }
-    else {
-	RBASIC(klass)->klass = module;
+    if (!RCLASS_CONST_TBL(module)) {
+	RCLASS_CONST_TBL(module) = rb_id_table_create(0);
     }
-    OBJ_INFECT(klass, module);
-    OBJ_INFECT(klass, super);
+    RCLASS_IV_TBL(klass) = RCLASS_IV_TBL(module);
+    RCLASS_CONST_TBL(klass) = RCLASS_CONST_TBL(module);
+
+    RCLASS_SET_SUPER(klass, super);
+    RBASIC_SET_CLASS(klass, module);
 
     return (VALUE)klass;
 }
 
+static int include_modules_at(const VALUE klass, VALUE c, VALUE module, int search_super);
+
+static void
+ensure_includable(VALUE klass, VALUE module)
+{
+    rb_class_modify_check(klass);
+    Check_Type(module, T_MODULE);
+    if (!NIL_P(rb_refinement_module_get_refined_class(module))) {
+	rb_raise(rb_eArgError, "refinement module is not allowed");
+    }
+}
+
 void
 rb_include_module(VALUE klass, VALUE module)
 {
-    VALUE p, c;
     int changed = 0;
 
-    rb_frozen_class_p(klass);
-    if (!OBJ_UNTRUSTED(klass)) {
-	rb_secure(4);
-    }
-    
-    if (TYPE(module) != T_MODULE) {
-	Check_Type(module, T_MODULE);
+    ensure_includable(klass, module);
+
+    changed = include_modules_at(klass, RCLASS_ORIGIN(klass), module, TRUE);
+    if (changed < 0)
+	rb_raise(rb_eArgError, "cyclic include detected");
+
+    if (RB_TYPE_P(klass, T_MODULE)) {
+        rb_subclass_entry_t *iclass = RCLASS_EXT(klass)->subclasses;
+        int do_include = 1;
+        while (iclass) {
+            VALUE check_class = iclass->klass;
+            /* During lazy sweeping, iclass->klass could be a dead object that
+             * has not yet been swept. */
+            if (!rb_objspace_garbage_object_p(check_class)) {
+                while (check_class) {
+                    if (RB_TYPE_P(check_class, T_ICLASS) &&
+                            (RBASIC(check_class)->klass == module)) {
+                        do_include = 0;
+                    }
+                    check_class = RCLASS_SUPER(check_class);
+                }
+
+                if (do_include) {
+                    include_modules_at(iclass->klass, RCLASS_ORIGIN(iclass->klass), module, TRUE);
+                }
+            }
+
+            iclass = iclass->next;
+        }
     }
+}
+
+static enum rb_id_table_iterator_result
+add_refined_method_entry_i(ID key, VALUE value, void *data)
+{
+    rb_add_refined_method_entry((VALUE)data, key);
+    return ID_TABLE_CONTINUE;
+}
+
+static enum rb_id_table_iterator_result
+clear_module_cache_i(ID id, VALUE val, void *data)
+{
+    VALUE klass = (VALUE)data;
+    rb_clear_method_cache(klass, id);
+    return ID_TABLE_CONTINUE;
+}
+
+static int
+include_modules_at(const VALUE klass, VALUE c, VALUE module, int search_super)
+{
+    VALUE p, iclass, origin_stack = 0;
+    int method_changed = 0, constant_changed = 0, add_subclass;
+    long origin_len;
+    struct rb_id_table *const klass_m_tbl = RCLASS_M_TBL(RCLASS_ORIGIN(klass));
+    VALUE original_klass = klass;
 
-    OBJ_INFECT(klass, module);
-    c = klass;
     while (module) {
-       int superclass_seen = Qfalse;
-
-	if (RCLASS_M_TBL(klass) == RCLASS_M_TBL(module))
-	    rb_raise(rb_eArgError, "cyclic include detected");
-       /* ignore if the module included already in superclasses */
-       for (p = RCLASS_SUPER(klass); p; p = RCLASS_SUPER(p)) {
-           switch (BUILTIN_TYPE(p)) {
-             case T_ICLASS:
-               if (RCLASS_M_TBL(p) == RCLASS_M_TBL(module)) {
-                   if (!superclass_seen) {
-                       c = p;  /* move insertion point */
-                   }
-                   goto skip;
-               }
-               break;
-             case T_CLASS:
-               superclass_seen = Qtrue;
-               break;
-           }
-       }
-       c = RCLASS_SUPER(c) = include_class_new(module, RCLASS_SUPER(c));
-	changed = 1;
+        int origin_seen = FALSE;
+	int superclass_seen = FALSE;
+	struct rb_id_table *tbl;
+
+        if (klass == c)
+            origin_seen = TRUE;
+	if (klass_m_tbl && klass_m_tbl == RCLASS_M_TBL(module))
+	    return -1;
+	/* ignore if the module included already in superclasses */
+        for (p = RCLASS_SUPER(klass); p; p = RCLASS_SUPER(p)) {
+	    int type = BUILTIN_TYPE(p);
+            if (c == p)
+                origin_seen = TRUE;
+	    if (type == T_ICLASS) {
+		if (RCLASS_M_TBL(p) == RCLASS_M_TBL(module)) {
+                    if (!superclass_seen && origin_seen) {
+			c = p;  /* move insertion point */
+		    }
+		    goto skip;
+		}
+	    }
+	    else if (type == T_CLASS) {
+		if (!search_super) break;
+                superclass_seen = TRUE;
+	    }
+	}
+
+        VALUE super_class = RCLASS_SUPER(c);
+
+        // invalidate inline method cache
+        tbl = RCLASS_M_TBL(module);
+        if (tbl && rb_id_table_size(tbl)) {
+            if (search_super) { // include
+                if (super_class && !RB_TYPE_P(super_class, T_MODULE)) {
+                    rb_id_table_foreach(tbl, clear_module_cache_i, (void *)super_class);
+                }
+            }
+            else { // prepend
+                if (!RB_TYPE_P(original_klass, T_MODULE)) {
+                    rb_id_table_foreach(tbl, clear_module_cache_i, (void *)original_klass);
+                }
+            }
+            method_changed = 1;
+        }
+
+        // setup T_ICLASS for the include/prepend module
+	iclass = rb_include_class_new(module, super_class);
+	c = RCLASS_SET_SUPER(c, iclass);
+        RCLASS_SET_INCLUDER(iclass, klass);
+        add_subclass = TRUE;
+        if (module != RCLASS_ORIGIN(module)) {
+            if (!origin_stack) origin_stack = rb_ary_tmp_new(2);
+            VALUE origin[2] = {iclass, RCLASS_ORIGIN(module)};
+            rb_ary_cat(origin_stack, origin, 2);
+        }
+        else if (origin_stack && (origin_len = RARRAY_LEN(origin_stack)) > 1 &&
+                 RARRAY_AREF(origin_stack, origin_len - 1) == module) {
+            RCLASS_SET_ORIGIN(RARRAY_AREF(origin_stack, (origin_len -= 2)), iclass);
+            RICLASS_SET_ORIGIN_SHARED_MTBL(iclass);
+            rb_ary_resize(origin_stack, origin_len);
+            add_subclass = FALSE;
+        }
+
+	{
+	    VALUE m = module;
+            if (BUILTIN_TYPE(m) == T_ICLASS) m = RBASIC(m)->klass;
+            if (add_subclass) rb_module_add_to_subclasses_list(m, iclass);
+	}
+
+	if (FL_TEST(klass, RMODULE_IS_REFINEMENT)) {
+	    VALUE refined_class =
+		rb_refinement_module_get_refined_class(klass);
+
+            rb_id_table_foreach(RCLASS_M_TBL(module), add_refined_method_entry_i, (void *)refined_class);
+	    FL_SET(c, RMODULE_INCLUDED_INTO_REFINEMENT);
+	}
+
+        tbl = RCLASS_CONST_TBL(module);
+	if (tbl && rb_id_table_size(tbl)) constant_changed = 1;
       skip:
 	module = RCLASS_SUPER(module);
     }
-    if (changed) rb_clear_cache();
+
+    if (constant_changed) rb_clear_constant_cache();
+
+    return method_changed;
+}
+
+static enum rb_id_table_iterator_result
+move_refined_method(ID key, VALUE value, void *data)
+{
+    rb_method_entry_t *me = (rb_method_entry_t *)value;
+
+    if (me->def->type == VM_METHOD_TYPE_REFINED) {
+        VALUE klass = (VALUE)data;
+        struct rb_id_table *tbl = RCLASS_M_TBL(klass);
+
+        if (me->def->body.refined.orig_me) {
+	    const rb_method_entry_t *orig_me = me->def->body.refined.orig_me, *new_me;
+	    RB_OBJ_WRITE(me, &me->def->body.refined.orig_me, NULL);
+	    new_me = rb_method_entry_clone(me);
+            rb_method_table_insert(klass, tbl, key, new_me);
+	    rb_method_entry_copy(me, orig_me);
+	    return ID_TABLE_CONTINUE;
+	}
+	else {
+            rb_method_table_insert(klass, tbl, key, me);
+	    return ID_TABLE_DELETE;
+	}
+    }
+    else {
+	return ID_TABLE_CONTINUE;
+    }
+}
+
+static enum rb_id_table_iterator_result
+cache_clear_refined_method(ID key, VALUE value, void *data)
+{
+    rb_method_entry_t *me = (rb_method_entry_t *) value;
+
+    if (me->def->type == VM_METHOD_TYPE_REFINED && me->def->body.refined.orig_me) {
+        VALUE klass = (VALUE)data;
+        rb_clear_method_cache(klass, me->called_id);
+    }
+    // Refined method entries without an orig_me is going to stay in the method
+    // table of klass, like before the move, so no need to clear the cache.
+
+    return ID_TABLE_CONTINUE;
+}
+
+static void
+ensure_origin(VALUE klass)
+{
+    VALUE origin = RCLASS_ORIGIN(klass);
+    if (origin == klass) {
+	origin = class_alloc(T_ICLASS, klass);
+	RCLASS_SET_SUPER(origin, RCLASS_SUPER(klass));
+	RCLASS_SET_SUPER(klass, origin);
+	RCLASS_SET_ORIGIN(klass, origin);
+	RCLASS_M_TBL(origin) = RCLASS_M_TBL(klass);
+	RCLASS_M_TBL_INIT(klass);
+        rb_id_table_foreach(RCLASS_M_TBL(origin), cache_clear_refined_method, (void *)klass);
+	rb_id_table_foreach(RCLASS_M_TBL(origin), move_refined_method, (void *)klass);
+    }
+}
+
+void
+rb_prepend_module(VALUE klass, VALUE module)
+{
+    int changed = 0;
+    bool klass_had_no_origin = RCLASS_ORIGIN(klass) == klass;
+
+    ensure_includable(klass, module);
+    ensure_origin(klass);
+    changed = include_modules_at(klass, klass, module, FALSE);
+    if (changed < 0)
+	rb_raise(rb_eArgError, "cyclic prepend detected");
+    if (changed) {
+	rb_vm_check_redefinition_by_prepend(klass);
+    }
+    if (RB_TYPE_P(klass, T_MODULE)) {
+        rb_subclass_entry_t *iclass = RCLASS_EXT(klass)->subclasses;
+        VALUE klass_origin = RCLASS_ORIGIN(klass);
+        struct rb_id_table *klass_m_tbl = RCLASS_M_TBL(klass);
+        struct rb_id_table *klass_origin_m_tbl = RCLASS_M_TBL(klass_origin);
+        while (iclass) {
+            /* During lazy sweeping, iclass->klass could be a dead object that
+             * has not yet been swept. */
+            if (!rb_objspace_garbage_object_p(iclass->klass)) {
+                if (klass_had_no_origin && klass_origin_m_tbl == RCLASS_M_TBL(iclass->klass)) {
+                    // backfill an origin iclass to handle refinements and future prepends
+                    rb_id_table_foreach(RCLASS_M_TBL(iclass->klass), clear_module_cache_i, (void *)iclass->klass);
+                    RCLASS_M_TBL(iclass->klass) = klass_m_tbl;
+                    VALUE origin = rb_include_class_new(klass_origin, RCLASS_SUPER(iclass->klass));
+                    RCLASS_SET_SUPER(iclass->klass, origin);
+                    RCLASS_SET_INCLUDER(origin, RCLASS_INCLUDER(iclass->klass));
+                    RCLASS_SET_ORIGIN(iclass->klass, origin);
+                    RICLASS_SET_ORIGIN_SHARED_MTBL(origin);
+                }
+                include_modules_at(iclass->klass, iclass->klass, module, FALSE);
+            }
+
+            iclass = iclass->next;
+        }
+    }
 }
 
 /*
  *  call-seq:
  *     mod.included_modules -> array
- *  
- *  Returns the list of modules included in <i>mod</i>.
- *     
+ *
+ *  Returns the list of modules included or prepended in <i>mod</i>
+ *  or one of <i>mod</i>'s ancestors.
+ *
+ *     module Sub
+ *     end
+ *
  *     module Mixin
+ *       prepend Sub
  *     end
- *     
+ *
  *     module Outer
  *       include Mixin
  *     end
- *     
- *     Mixin.included_modules   #=> []
- *     Outer.included_modules   #=> [Mixin]
+ *
+ *     Mixin.included_modules   #=> [Sub]
+ *     Outer.included_modules   #=> [Sub, Mixin]
  */
 
 VALUE
@@ -480,10 +1234,13 @@ rb_mod_included_modules(VALUE mod)
 {
     VALUE ary = rb_ary_new();
     VALUE p;
+    VALUE origin = RCLASS_ORIGIN(mod);
 
     for (p = RCLASS_SUPER(mod); p; p = RCLASS_SUPER(p)) {
-	if (BUILTIN_TYPE(p) == T_ICLASS) {
-	    rb_ary_push(ary, RBASIC(p)->klass);
+        if (p != origin && RCLASS_ORIGIN(p) == p && BUILTIN_TYPE(p) == T_ICLASS) {
+	    VALUE m = RBASIC(p)->klass;
+	    if (RB_TYPE_P(m, T_MODULE))
+		rb_ary_push(ary, m);
 	}
     }
     return ary;
@@ -491,11 +1248,11 @@ rb_mod_included_modules(VALUE mod)
 
 /*
  *  call-seq:
- *     mod.include?(module)    => true or false
- *  
- *  Returns <code>true</code> if <i>module</i> is included in
- *  <i>mod</i> or one of <i>mod</i>'s ancestors.
- *     
+ *     mod.include?(module)    -> true or false
+ *
+ *  Returns <code>true</code> if <i>module</i> is included
+ *  or prepended in <i>mod</i> or one of <i>mod</i>'s ancestors.
+ *
  *     module A
  *     end
  *     class B
@@ -515,7 +1272,7 @@ rb_mod_include_p(VALUE mod, VALUE mod2)
 
     Check_Type(mod2, T_MODULE);
     for (p = RCLASS_SUPER(mod); p; p = RCLASS_SUPER(p)) {
-	if (BUILTIN_TYPE(p) == T_ICLASS) {
+        if (BUILTIN_TYPE(p) == T_ICLASS && !FL_TEST(p, RICLASS_IS_ORIGIN)) {
 	    if (RBASIC(p)->klass == mod2) return Qtrue;
 	}
     }
@@ -525,17 +1282,19 @@ rb_mod_include_p(VALUE mod, VALUE mod2)
 /*
  *  call-seq:
  *     mod.ancestors -> array
- *  
- *  Returns a list of modules included in <i>mod</i> (including
- *  <i>mod</i> itself).
- *     
+ *
+ *  Returns a list of modules included/prepended in <i>mod</i>
+ *  (including <i>mod</i> itself).
+ *
  *     module Mod
  *       include Math
  *       include Comparable
+ *       prepend Enumerable
  *     end
- *     
- *     Mod.ancestors    #=> [Mod, Comparable, Math]
- *     Math.ancestors   #=> [Math]
+ *
+ *     Mod.ancestors        #=> [Enumerable, Mod, Comparable, Math]
+ *     Math.ancestors       #=> [Math]
+ *     Enumerable.ancestors #=> [Enumerable]
  */
 
 VALUE
@@ -544,173 +1303,202 @@ rb_mod_ancestors(VALUE mod)
     VALUE p, ary = rb_ary_new();
 
     for (p = mod; p; p = RCLASS_SUPER(p)) {
-	if (FL_TEST(p, FL_SINGLETON))
-	    continue;
+        if (p != RCLASS_ORIGIN(p)) continue;
 	if (BUILTIN_TYPE(p) == T_ICLASS) {
 	    rb_ary_push(ary, RBASIC(p)->klass);
 	}
-	else {
+        else {
 	    rb_ary_push(ary, p);
 	}
     }
     return ary;
 }
 
-#define VISI(x) ((x)&NOEX_MASK)
-#define VISI_CHECK(x,f) (VISI(x) == (f))
+static void
+ins_methods_push(st_data_t name, st_data_t ary)
+{
+    rb_ary_push((VALUE)ary, ID2SYM((ID)name));
+}
 
 static int
-ins_methods_push(ID name, long type, VALUE ary, long visi)
+ins_methods_i(st_data_t name, st_data_t type, st_data_t ary)
 {
-    if (type == -1) return ST_CONTINUE;
-
-    switch (visi) {
-      case NOEX_PRIVATE:
-      case NOEX_PROTECTED:
-      case NOEX_PUBLIC:
-	visi = (type == visi);
+    switch ((rb_method_visibility_t)type) {
+      case METHOD_VISI_UNDEF:
+      case METHOD_VISI_PRIVATE:
 	break;
-      default:
-	visi = (type != NOEX_PRIVATE);
+      default: /* everything but private */
+	ins_methods_push(name, ary);
 	break;
     }
-    if (visi) {
-	rb_ary_push(ary, ID2SYM(name));
-    }
     return ST_CONTINUE;
 }
 
 static int
-ins_methods_i(ID name, long type, VALUE ary)
+ins_methods_prot_i(st_data_t name, st_data_t type, st_data_t ary)
 {
-    return ins_methods_push(name, type, ary, -1); /* everything but private */
+    if ((rb_method_visibility_t)type == METHOD_VISI_PROTECTED) {
+	ins_methods_push(name, ary);
+    }
+    return ST_CONTINUE;
 }
 
 static int
-ins_methods_prot_i(ID name, long type, VALUE ary)
+ins_methods_priv_i(st_data_t name, st_data_t type, st_data_t ary)
 {
-    return ins_methods_push(name, type, ary, NOEX_PROTECTED);
+    if ((rb_method_visibility_t)type == METHOD_VISI_PRIVATE) {
+	ins_methods_push(name, ary);
+    }
+    return ST_CONTINUE;
 }
 
 static int
-ins_methods_priv_i(ID name, long type, VALUE ary)
+ins_methods_pub_i(st_data_t name, st_data_t type, st_data_t ary)
 {
-    return ins_methods_push(name, type, ary, NOEX_PRIVATE);
+    if ((rb_method_visibility_t)type == METHOD_VISI_PUBLIC) {
+	ins_methods_push(name, ary);
+    }
+    return ST_CONTINUE;
 }
 
-static int
-ins_methods_pub_i(ID name, long type, VALUE ary)
-{
-    return ins_methods_push(name, type, ary, NOEX_PUBLIC);
-}
+struct method_entry_arg {
+    st_table *list;
+    int recur;
+};
 
-static int
-method_entry(ID key, NODE *body, st_table *list)
+static enum rb_id_table_iterator_result
+method_entry_i(ID key, VALUE value, void *data)
 {
-    long type;
-
-    if (key == ID_ALLOCATOR) {
-	return ST_CONTINUE;
+    const rb_method_entry_t *me = (const rb_method_entry_t *)value;
+    struct method_entry_arg *arg = (struct method_entry_arg *)data;
+    rb_method_visibility_t type;
+
+    if (me->def->type == VM_METHOD_TYPE_REFINED) {
+	VALUE owner = me->owner;
+	me = rb_resolve_refined_method(Qnil, me);
+	if (!me) return ID_TABLE_CONTINUE;
+	if (!arg->recur && me->owner != owner) return ID_TABLE_CONTINUE;
     }
-    
-    if (!st_lookup(list, key, 0)) {
-	if (body ==0 || !body->nd_body->nd_body) {
-	    type = -1; /* none */
+    if (!st_is_member(arg->list, key)) {
+	if (UNDEFINED_METHOD_ENTRY_P(me)) {
+	    type = METHOD_VISI_UNDEF; /* none */
 	}
 	else {
-	    type = VISI(body->nd_body->nd_noex);
+	    type = METHOD_ENTRY_VISI(me);
 	}
-	st_add_direct(list, key, type);
+	st_add_direct(arg->list, key, (st_data_t)type);
     }
-    return ST_CONTINUE;
+    return ID_TABLE_CONTINUE;
+}
+
+static void
+add_instance_method_list(VALUE mod, struct method_entry_arg *me_arg)
+{
+    struct rb_id_table *m_tbl = RCLASS_M_TBL(mod);
+    if (!m_tbl) return;
+    rb_id_table_foreach(m_tbl, method_entry_i, me_arg);
+}
+
+static bool
+particular_class_p(VALUE mod)
+{
+    if (!mod) return false;
+    if (FL_TEST(mod, FL_SINGLETON)) return true;
+    if (BUILTIN_TYPE(mod) == T_ICLASS) return true;
+    return false;
 }
 
 static VALUE
-class_instance_method_list(int argc, VALUE *argv, VALUE mod, int (*func) (ID, long, VALUE))
+class_instance_method_list(int argc, const VALUE *argv, VALUE mod, int obj, int (*func) (st_data_t, st_data_t, st_data_t))
 {
     VALUE ary;
-    int recur;
-    st_table *list;
+    int recur = TRUE, prepended = 0;
+    struct method_entry_arg me_arg;
+
+    if (rb_check_arity(argc, 0, 1)) recur = RTEST(argv[0]);
 
-    if (argc == 0) {
-	recur = Qtrue;
+    me_arg.list = st_init_numtable();
+    me_arg.recur = recur;
+
+    if (obj) {
+        for (; particular_class_p(mod); mod = RCLASS_SUPER(mod)) {
+            add_instance_method_list(mod, &me_arg);
+        }
     }
-    else {
-	VALUE r;
-	rb_scan_args(argc, argv, "01", &r);
-	recur = RTEST(r);
+
+    if (!recur && RCLASS_ORIGIN(mod) != mod) {
+	mod = RCLASS_ORIGIN(mod);
+	prepended = 1;
     }
 
-    list = st_init_numtable();
     for (; mod; mod = RCLASS_SUPER(mod)) {
-	st_foreach(RCLASS_M_TBL(mod), method_entry, (st_data_t)list);
-	if (BUILTIN_TYPE(mod) == T_ICLASS) continue;
-	if (FL_TEST(mod, FL_SINGLETON)) continue;
+        add_instance_method_list(mod, &me_arg);
+	if (BUILTIN_TYPE(mod) == T_ICLASS && !prepended) continue;
 	if (!recur) break;
     }
-    ary = rb_ary_new();
-    st_foreach(list, func, ary);
-    st_free_table(list);
+    ary = rb_ary_new2(me_arg.list->num_entries);
+    st_foreach(me_arg.list, func, ary);
+    st_free_table(me_arg.list);
 
     return ary;
 }
 
 /*
  *  call-seq:
- *     mod.instance_methods(include_super=true)   => array
- *  
- *  Returns an array containing the names of instance methods that is callable
- *  from outside in the receiver. For a module, these are the public methods;
- *  for a class, they are the instance (not singleton) methods. With no
- *  argument, or with an argument that is <code>false</code>, the
- *  instance methods in <i>mod</i> are returned, otherwise the methods
- *  in <i>mod</i> and <i>mod</i>'s superclasses are returned.
- *     
+ *     mod.instance_methods(include_super=true)   -> array
+ *
+ *  Returns an array containing the names of the public and protected instance
+ *  methods in the receiver. For a module, these are the public and protected methods;
+ *  for a class, they are the instance (not singleton) methods. If the optional
+ *  parameter is <code>false</code>, the methods of any ancestors are not included.
+ *
  *     module A
  *       def method1()  end
  *     end
  *     class B
+ *       include A
  *       def method2()  end
  *     end
  *     class C < B
  *       def method3()  end
  *     end
- *     
- *     A.instance_methods                #=> [:method1]
- *     B.instance_methods(false)         #=> [:method2]
- *     C.instance_methods(false)         #=> [:method3]
- *     C.instance_methods(true).length   #=> 43
+ *
+ *     A.instance_methods(false)                   #=> [:method1]
+ *     B.instance_methods(false)                   #=> [:method2]
+ *     B.instance_methods(true).include?(:method1) #=> true
+ *     C.instance_methods(false)                   #=> [:method3]
+ *     C.instance_methods.include?(:method2)       #=> true
  */
 
 VALUE
-rb_class_instance_methods(int argc, VALUE *argv, VALUE mod)
+rb_class_instance_methods(int argc, const VALUE *argv, VALUE mod)
 {
-    return class_instance_method_list(argc, argv, mod, ins_methods_i);
+    return class_instance_method_list(argc, argv, mod, 0, ins_methods_i);
 }
 
 /*
  *  call-seq:
- *     mod.protected_instance_methods(include_super=true)   => array
- *  
+ *     mod.protected_instance_methods(include_super=true)   -> array
+ *
  *  Returns a list of the protected instance methods defined in
- *  <i>mod</i>. If the optional parameter is not <code>false</code>, the
- *  methods of any ancestors are included.
+ *  <i>mod</i>. If the optional parameter is <code>false</code>, the
+ *  methods of any ancestors are not included.
  */
 
 VALUE
-rb_class_protected_instance_methods(int argc, VALUE *argv, VALUE mod)
+rb_class_protected_instance_methods(int argc, const VALUE *argv, VALUE mod)
 {
-    return class_instance_method_list(argc, argv, mod, ins_methods_prot_i);
+    return class_instance_method_list(argc, argv, mod, 0, ins_methods_prot_i);
 }
 
 /*
  *  call-seq:
- *     mod.private_instance_methods(include_super=true)    => array
- *  
+ *     mod.private_instance_methods(include_super=true)    -> array
+ *
  *  Returns a list of the private instance methods defined in
- *  <i>mod</i>. If the optional parameter is not <code>false</code>, the
- *  methods of any ancestors are included.
- *     
+ *  <i>mod</i>. If the optional parameter is <code>false</code>, the
+ *  methods of any ancestors are not included.
+ *
  *     module Mod
  *       def method1()  end
  *       private :method1
@@ -721,175 +1509,463 @@ rb_class_protected_instance_methods(int argc, VALUE *argv, VALUE mod)
  */
 
 VALUE
-rb_class_private_instance_methods(int argc, VALUE *argv, VALUE mod)
+rb_class_private_instance_methods(int argc, const VALUE *argv, VALUE mod)
 {
-    return class_instance_method_list(argc, argv, mod, ins_methods_priv_i);
+    return class_instance_method_list(argc, argv, mod, 0, ins_methods_priv_i);
 }
 
 /*
  *  call-seq:
- *     mod.public_instance_methods(include_super=true)   => array
- *  
+ *     mod.public_instance_methods(include_super=true)   -> array
+ *
  *  Returns a list of the public instance methods defined in <i>mod</i>.
- *  If the optional parameter is not <code>false</code>, the methods of
- *  any ancestors are included.
+ *  If the optional parameter is <code>false</code>, the methods of
+ *  any ancestors are not included.
+ */
+
+VALUE
+rb_class_public_instance_methods(int argc, const VALUE *argv, VALUE mod)
+{
+    return class_instance_method_list(argc, argv, mod, 0, ins_methods_pub_i);
+}
+
+/*
+ *  call-seq:
+ *     obj.methods(regular=true)    -> array
+ *
+ *  Returns a list of the names of public and protected methods of
+ *  <i>obj</i>. This will include all the methods accessible in
+ *  <i>obj</i>'s ancestors.
+ *  If the optional parameter is <code>false</code>, it
+ *  returns an array of <i>obj</i>'s public and protected singleton methods,
+ *  the array will not include methods in modules included in <i>obj</i>.
+ *
+ *     class Klass
+ *       def klass_method()
+ *       end
+ *     end
+ *     k = Klass.new
+ *     k.methods[0..9]    #=> [:klass_method, :nil?, :===,
+ *                        #    :==~, :!, :eql?
+ *                        #    :hash, :<=>, :class, :singleton_class]
+ *     k.methods.length   #=> 56
+ *
+ *     k.methods(false)   #=> []
+ *     def k.singleton_method; end
+ *     k.methods(false)   #=> [:singleton_method]
+ *
+ *     module M123; def m123; end end
+ *     k.extend M123
+ *     k.methods(false)   #=> [:singleton_method]
+ */
+
+VALUE
+rb_obj_methods(int argc, const VALUE *argv, VALUE obj)
+{
+    rb_check_arity(argc, 0, 1);
+    if (argc > 0 && !RTEST(argv[0])) {
+	return rb_obj_singleton_methods(argc, argv, obj);
+    }
+    return class_instance_method_list(argc, argv, CLASS_OF(obj), 1, ins_methods_i);
+}
+
+/*
+ *  call-seq:
+ *     obj.protected_methods(all=true)   -> array
+ *
+ *  Returns the list of protected methods accessible to <i>obj</i>. If
+ *  the <i>all</i> parameter is set to <code>false</code>, only those methods
+ *  in the receiver will be listed.
  */
 
 VALUE
-rb_class_public_instance_methods(int argc, VALUE *argv, VALUE mod)
+rb_obj_protected_methods(int argc, const VALUE *argv, VALUE obj)
 {
-    return class_instance_method_list(argc, argv, mod, ins_methods_pub_i);
+    return class_instance_method_list(argc, argv, CLASS_OF(obj), 1, ins_methods_prot_i);
 }
 
 /*
  *  call-seq:
- *     obj.singleton_methods(all=true)    => array
- *  
+ *     obj.private_methods(all=true)   -> array
+ *
+ *  Returns the list of private methods accessible to <i>obj</i>. If
+ *  the <i>all</i> parameter is set to <code>false</code>, only those methods
+ *  in the receiver will be listed.
+ */
+
+VALUE
+rb_obj_private_methods(int argc, const VALUE *argv, VALUE obj)
+{
+    return class_instance_method_list(argc, argv, CLASS_OF(obj), 1, ins_methods_priv_i);
+}
+
+/*
+ *  call-seq:
+ *     obj.public_methods(all=true)   -> array
+ *
+ *  Returns the list of public methods accessible to <i>obj</i>. If
+ *  the <i>all</i> parameter is set to <code>false</code>, only those methods
+ *  in the receiver will be listed.
+ */
+
+VALUE
+rb_obj_public_methods(int argc, const VALUE *argv, VALUE obj)
+{
+    return class_instance_method_list(argc, argv, CLASS_OF(obj), 1, ins_methods_pub_i);
+}
+
+/*
+ *  call-seq:
+ *     obj.singleton_methods(all=true)    -> array
+ *
  *  Returns an array of the names of singleton methods for <i>obj</i>.
  *  If the optional <i>all</i> parameter is true, the list will include
  *  methods in modules included in <i>obj</i>.
- *     
+ *  Only public and protected singleton methods are returned.
+ *
  *     module Other
  *       def three() end
  *     end
- *     
+ *
  *     class Single
  *       def Single.four() end
  *     end
- *     
+ *
  *     a = Single.new
- *     
+ *
  *     def a.one()
  *     end
- *     
+ *
  *     class << a
  *       include Other
  *       def two()
  *       end
  *     end
- *     
+ *
  *     Single.singleton_methods    #=> [:four]
  *     a.singleton_methods(false)  #=> [:two, :one]
  *     a.singleton_methods         #=> [:two, :one, :three]
  */
 
 VALUE
-rb_obj_singleton_methods(int argc, VALUE *argv, VALUE obj)
+rb_obj_singleton_methods(int argc, const VALUE *argv, VALUE obj)
 {
-    VALUE recur, ary, klass;
-    st_table *list;
-
-    if (argc == 0) {
-	recur = Qtrue;
-    }
-    else {
-	rb_scan_args(argc, argv, "01", &recur);
+    VALUE ary, klass, origin;
+    struct method_entry_arg me_arg;
+    struct rb_id_table *mtbl;
+    int recur = TRUE;
+
+    if (rb_check_arity(argc, 0, 1)) recur = RTEST(argv[0]);
+    if (RB_TYPE_P(obj, T_CLASS) && FL_TEST(obj, FL_SINGLETON)) {
+        rb_singleton_class(obj);
     }
     klass = CLASS_OF(obj);
-    list = st_init_numtable();
+    origin = RCLASS_ORIGIN(klass);
+    me_arg.list = st_init_numtable();
+    me_arg.recur = recur;
     if (klass && FL_TEST(klass, FL_SINGLETON)) {
-	st_foreach(RCLASS_M_TBL(klass), method_entry, (st_data_t)list);
+	if ((mtbl = RCLASS_M_TBL(origin)) != 0) rb_id_table_foreach(mtbl, method_entry_i, &me_arg);
 	klass = RCLASS_SUPER(klass);
     }
-    if (RTEST(recur)) {
-	while (klass && (FL_TEST(klass, FL_SINGLETON) || TYPE(klass) == T_ICLASS)) {
-	    st_foreach(RCLASS_M_TBL(klass), method_entry, (st_data_t)list);
+    if (recur) {
+	while (klass && (FL_TEST(klass, FL_SINGLETON) || RB_TYPE_P(klass, T_ICLASS))) {
+	    if (klass != origin && (mtbl = RCLASS_M_TBL(klass)) != 0) rb_id_table_foreach(mtbl, method_entry_i, &me_arg);
 	    klass = RCLASS_SUPER(klass);
 	}
     }
-    ary = rb_ary_new();
-    st_foreach(list, ins_methods_i, ary);
-    st_free_table(list);
+    ary = rb_ary_new2(me_arg.list->num_entries);
+    st_foreach(me_arg.list, ins_methods_i, ary);
+    st_free_table(me_arg.list);
 
     return ary;
 }
 
+/*!
+ * \}
+ */
+/*!
+ * \defgroup defmethod Defining methods
+ * There are some APIs to define a method from C.
+ * These API takes a C function as a method body.
+ *
+ * \par Method body functions
+ * Method body functions must return a VALUE and
+ * can be one of the following form:
+ * <dl>
+ * <dt>Fixed number of parameters</dt>
+ * <dd>
+ *     This form is a normal C function, excepting it takes
+ *     a receiver object as the first argument.
+ *
+ *     \code
+ *     static VALUE my_method(VALUE self, VALUE x, VALUE y);
+ *     \endcode
+ * </dd>
+ * <dt>argc and argv style</dt>
+ * <dd>
+ *     This form takes three parameters: \a argc, \a argv and \a self.
+ *     \a self is the receiver. \a argc is the number of arguments.
+ *     \a argv is a pointer to an array of the arguments.
+ *
+ *     \code
+ *     static VALUE my_method(int argc, VALUE *argv, VALUE self);
+ *     \endcode
+ * </dd>
+ * <dt>Ruby array style</dt>
+ * <dd>
+ *     This form takes two parameters: self and args.
+ *     \a self is the receiver. \a args is an Array object which
+ *     contains the arguments.
+ *
+ *     \code
+ *     static VALUE my_method(VALUE self, VALUE args);
+ *     \endcode
+ * </dd>
+ *
+ * \par Number of parameters
+ * Method defining APIs takes the number of parameters which the
+ * method will takes. This number is called \a argc.
+ * \a argc can be:
+ * <dl>
+ * <dt>zero or positive number</dt>
+ * <dd>This means the method body function takes a fixed number of parameters</dd>
+ * <dt>-1</dt>
+ * <dd>This means the method body function is "argc and argv" style.</dd>
+ * <dt>-2</dt>
+ * <dd>This means the method body function is "self and args" style.</dd>
+ * </dl>
+ * \{
+ */
+
+#ifdef rb_define_method_id
+#undef rb_define_method_id
+#endif
 void
-rb_define_method_id(VALUE klass, ID name, VALUE (*func)(ANYARGS), int argc)
+rb_define_method_id(VALUE klass, ID mid, VALUE (*func)(ANYARGS), int argc)
 {
-    rb_add_method(klass, name, NEW_CFUNC(func,argc), NOEX_PUBLIC);
+    rb_add_method_cfunc(klass, mid, func, argc, METHOD_VISI_PUBLIC);
 }
 
+#ifdef rb_define_method
+#undef rb_define_method
+#endif
 void
 rb_define_method(VALUE klass, const char *name, VALUE (*func)(ANYARGS), int argc)
 {
-    rb_add_method(klass, rb_intern(name), NEW_CFUNC(func, argc), NOEX_PUBLIC);
+    rb_add_method_cfunc(klass, rb_intern(name), func, argc, METHOD_VISI_PUBLIC);
 }
 
+#ifdef rb_define_protected_method
+#undef rb_define_protected_method
+#endif
 void
 rb_define_protected_method(VALUE klass, const char *name, VALUE (*func)(ANYARGS), int argc)
 {
-    rb_add_method(klass, rb_intern(name), NEW_CFUNC(func, argc), NOEX_PROTECTED);
+    rb_add_method_cfunc(klass, rb_intern(name), func, argc, METHOD_VISI_PROTECTED);
 }
 
+#ifdef rb_define_private_method
+#undef rb_define_private_method
+#endif
 void
 rb_define_private_method(VALUE klass, const char *name, VALUE (*func)(ANYARGS), int argc)
 {
-    rb_add_method(klass, rb_intern(name), NEW_CFUNC(func, argc), NOEX_PRIVATE);
+    rb_add_method_cfunc(klass, rb_intern(name), func, argc, METHOD_VISI_PRIVATE);
 }
 
 void
 rb_undef_method(VALUE klass, const char *name)
 {
-    rb_add_method(klass, rb_intern(name), 0, NOEX_UNDEF);
+    rb_add_method(klass, rb_intern(name), VM_METHOD_TYPE_UNDEF, 0, METHOD_VISI_UNDEF);
 }
 
-#define SPECIAL_SINGLETON(x,c) do {\
-    if (obj == (x)) {\
-	return c;\
-    }\
-} while (0)
+static enum rb_id_table_iterator_result
+undef_method_i(ID name, VALUE value, void *data)
+{
+    VALUE klass = (VALUE)data;
+    rb_add_method(klass, name, VM_METHOD_TYPE_UNDEF, 0, METHOD_VISI_UNDEF);
+    return ID_TABLE_CONTINUE;
+}
+
+void
+rb_undef_methods_from(VALUE klass, VALUE super)
+{
+    struct rb_id_table *mtbl = RCLASS_M_TBL(super);
+    if (mtbl) {
+	rb_id_table_foreach(mtbl, undef_method_i, (void *)klass);
+    }
+}
+
+/*!
+ * \}
+ */
+/*!
+ * \addtogroup class
+ * \{
+ */
+
+static inline VALUE
+special_singleton_class_of(VALUE obj)
+{
+    switch (obj) {
+      case Qnil:   return rb_cNilClass;
+      case Qfalse: return rb_cFalseClass;
+      case Qtrue:  return rb_cTrueClass;
+      default:     return Qnil;
+    }
+}
 
 VALUE
-rb_singleton_class(VALUE obj)
+rb_special_singleton_class(VALUE obj)
+{
+    return special_singleton_class_of(obj);
+}
+
+/*!
+ * \internal
+ * Returns the singleton class of \a obj. Creates it if necessary.
+ *
+ * \note DO NOT expose the returned singleton class to
+ *       outside of class.c.
+ *       Use \ref rb_singleton_class instead for
+ *       consistency of the metaclass hierarchy.
+ */
+static VALUE
+singleton_class_of(VALUE obj)
 {
     VALUE klass;
 
-    if (FIXNUM_P(obj) || SYMBOL_P(obj)) {
+    switch (TYPE(obj)) {
+      case T_FIXNUM:
+      case T_BIGNUM:
+      case T_FLOAT:
+      case T_SYMBOL:
 	rb_raise(rb_eTypeError, "can't define singleton");
-    }
-    if (rb_special_const_p(obj)) {
-	SPECIAL_SINGLETON(Qnil, rb_cNilClass);
-	SPECIAL_SINGLETON(Qfalse, rb_cFalseClass);
-	SPECIAL_SINGLETON(Qtrue, rb_cTrueClass);
-	rb_bug("unknown immediate %ld", obj);
-    }
 
-    if (FL_TEST(RBASIC(obj)->klass, FL_SINGLETON) &&
-	rb_iv_get(RBASIC(obj)->klass, "__attached__") == obj) {
-	klass = RBASIC(obj)->klass;
-    }
-    else {
-	klass = rb_make_metaclass(obj, RBASIC(obj)->klass);
-    }
+      case T_FALSE:
+      case T_TRUE:
+      case T_NIL:
+	klass = special_singleton_class_of(obj);
+	if (NIL_P(klass))
+	    rb_bug("unknown immediate %p", (void *)obj);
+	return klass;
 
-    if (BUILTIN_TYPE(obj) == T_CLASS) {
-	if (rb_iv_get(RBASIC(klass)->klass, "__attached__") != klass)
-        make_metametaclass(klass);
+      case T_STRING:
+        if (FL_TEST_RAW(obj, RSTRING_FSTR)) {
+            rb_raise(rb_eTypeError, "can't define singleton");
+        }
     }
-    if (OBJ_TAINTED(obj)) {
-	OBJ_TAINT(klass);
-    }
-    else {
-	FL_UNSET(klass, FL_TAINT);
+
+    klass = RBASIC(obj)->klass;
+    if (!(FL_TEST(klass, FL_SINGLETON) &&
+          rb_attr_get(klass, id_attached) == obj)) {
+	rb_serial_t serial = RCLASS_SERIAL(klass);
+	klass = rb_make_metaclass(obj, klass);
+	RCLASS_SERIAL(klass) = serial;
     }
-    if (OBJ_UNTRUSTED(obj)) {
-	OBJ_UNTRUST(klass);
+
+    RB_FL_SET_RAW(klass, RB_OBJ_FROZEN_RAW(obj));
+
+    return klass;
+}
+
+void
+rb_freeze_singleton_class(VALUE x)
+{
+    /* should not propagate to meta-meta-class, and so on */
+    if (!(RBASIC(x)->flags & FL_SINGLETON)) {
+	VALUE klass = RBASIC_CLASS(x);
+	if (klass && (klass = RCLASS_ORIGIN(klass)) != 0 &&
+	    FL_TEST(klass, (FL_SINGLETON|FL_FREEZE)) == FL_SINGLETON) {
+	    OBJ_FREEZE_RAW(klass);
+	}
     }
-    else {
-	FL_UNSET(klass, FL_UNTRUSTED);
+}
+
+/*!
+ * Returns the singleton class of \a obj, or nil if obj is not a
+ * singleton object.
+ *
+ * \param obj an arbitrary object.
+ * \return the singleton class or nil.
+ */
+VALUE
+rb_singleton_class_get(VALUE obj)
+{
+    VALUE klass;
+
+    if (SPECIAL_CONST_P(obj)) {
+	return rb_special_singleton_class(obj);
     }
-    if (OBJ_FROZEN(obj)) OBJ_FREEZE(klass);
+    klass = RBASIC(obj)->klass;
+    if (!FL_TEST(klass, FL_SINGLETON)) return Qnil;
+    if (rb_attr_get(klass, id_attached) != obj) return Qnil;
+    return klass;
+}
+
+/*!
+ * Returns the singleton class of \a obj. Creates it if necessary.
+ *
+ * \param obj an arbitrary object.
+ * \throw TypeError if \a obj is an Integer or a Symbol.
+ * \return the singleton class.
+ *
+ * \post \a obj has its own singleton class.
+ * \post if \a obj is a class,
+ *       the returned singleton class also has its own
+ *       singleton class in order to keep consistency of the
+ *       inheritance structure of metaclasses.
+ * \note a new singleton class will be created
+ *       if \a obj does not have it.
+ * \note the singleton classes for nil, true and false are:
+ *       NilClass, TrueClass and FalseClass.
+ */
+VALUE
+rb_singleton_class(VALUE obj)
+{
+    VALUE klass = singleton_class_of(obj);
+
+    /* ensures an exposed class belongs to its own eigenclass */
+    if (RB_TYPE_P(obj, T_CLASS)) (void)ENSURE_EIGENCLASS(klass);
 
     return klass;
 }
 
+/*!
+ * \}
+ */
+
+/*!
+ * \addtogroup defmethod
+ * \{
+ */
+
+#ifdef rb_define_singleton_method
+#undef rb_define_singleton_method
+#endif
+/*!
+ * Defines a singleton method for \a obj.
+ * \param obj    an arbitrary object
+ * \param name   name of the singleton method
+ * \param func   the method body
+ * \param argc   the number of parameters, or -1 or -2. see \ref defmethod.
+ */
 void
 rb_define_singleton_method(VALUE obj, const char *name, VALUE (*func)(ANYARGS), int argc)
 {
-    rb_define_method(rb_singleton_class(obj), name, func, argc);
+    rb_define_method(singleton_class_of(obj), name, func, argc);
 }
 
+#ifdef rb_define_module_function
+#undef rb_define_module_function
+#endif
+/*!
+ * Defines a module function for \a module.
+ * \param module  an module or a class.
+ * \param name    name of the function
+ * \param func    the method body
+ * \param argc    the number of parameters, or -1 or -2. see \ref defmethod.
+ */
 void
 rb_define_module_function(VALUE module, const char *name, VALUE (*func)(ANYARGS), int argc)
 {
@@ -897,102 +1973,356 @@ rb_define_module_function(VALUE module, const char *name, VALUE (*func)(ANYARGS)
     rb_define_singleton_method(module, name, func, argc);
 }
 
+#ifdef rb_define_global_function
+#undef rb_define_global_function
+#endif
+/*!
+ * Defines a global function
+ * \param name    name of the function
+ * \param func    the method body
+ * \param argc    the number of parameters, or -1 or -2. see \ref defmethod.
+ */
 void
 rb_define_global_function(const char *name, VALUE (*func)(ANYARGS), int argc)
 {
     rb_define_module_function(rb_mKernel, name, func, argc);
 }
 
+
+/*!
+ * Defines an alias of a method.
+ * \param klass  the class which the original method belongs to
+ * \param name1  a new name for the method
+ * \param name2  the original name of the method
+ */
 void
 rb_define_alias(VALUE klass, const char *name1, const char *name2)
 {
     rb_alias(klass, rb_intern(name1), rb_intern(name2));
 }
 
+/*!
+ * Defines (a) public accessor method(s) for an attribute.
+ * \param klass  the class which the attribute will belongs to
+ * \param name   name of the attribute
+ * \param read   a getter method for the attribute will be defined if \a read is non-zero.
+ * \param write  a setter method for the attribute will be defined if \a write is non-zero.
+ */
 void
 rb_define_attr(VALUE klass, const char *name, int read, int write)
 {
-    rb_attr(klass, rb_intern(name), read, write, Qfalse);
+    rb_attr(klass, rb_intern(name), read, write, FALSE);
 }
 
-#include <stdarg.h>
+MJIT_FUNC_EXPORTED VALUE
+rb_keyword_error_new(const char *error, VALUE keys)
+{
+    long i = 0, len = RARRAY_LEN(keys);
+    VALUE error_message = rb_sprintf("%s keyword%.*s", error, len > 1, "s");
+
+    if (len > 0) {
+	rb_str_cat_cstr(error_message, ": ");
+	while (1) {
+            const VALUE k = RARRAY_AREF(keys, i);
+	    rb_str_append(error_message, rb_inspect(k));
+	    if (++i >= len) break;
+	    rb_str_cat_cstr(error_message, ", ");
+	}
+    }
+
+    return rb_exc_new_str(rb_eArgError, error_message);
+}
+
+NORETURN(static void rb_keyword_error(const char *error, VALUE keys));
+static void
+rb_keyword_error(const char *error, VALUE keys)
+{
+    rb_exc_raise(rb_keyword_error_new(error, keys));
+}
+
+NORETURN(static void unknown_keyword_error(VALUE hash, const ID *table, int keywords));
+static void
+unknown_keyword_error(VALUE hash, const ID *table, int keywords)
+{
+    int i;
+    for (i = 0; i < keywords; i++) {
+	st_data_t key = ID2SYM(table[i]);
+        rb_hash_stlike_delete(hash, &key, NULL);
+    }
+    rb_keyword_error("unknown", rb_hash_keys(hash));
+}
+
+
+static int
+separate_symbol(st_data_t key, st_data_t value, st_data_t arg)
+{
+    VALUE *kwdhash = (VALUE *)arg;
+    if (!SYMBOL_P(key)) kwdhash++;
+    if (!*kwdhash) *kwdhash = rb_hash_new();
+    rb_hash_aset(*kwdhash, (VALUE)key, (VALUE)value);
+    return ST_CONTINUE;
+}
+
+VALUE
+rb_extract_keywords(VALUE *orighash)
+{
+    VALUE parthash[2] = {0, 0};
+    VALUE hash = *orighash;
+
+    if (RHASH_EMPTY_P(hash)) {
+	*orighash = 0;
+	return hash;
+    }
+    rb_hash_foreach(hash, separate_symbol, (st_data_t)&parthash);
+    *orighash = parthash[1];
+    if (parthash[1] && RBASIC_CLASS(hash) != rb_cHash) {
+        RBASIC_SET_CLASS(parthash[1], RBASIC_CLASS(hash));
+    }
+    return parthash[0];
+}
 
 int
-rb_scan_args(int argc, const VALUE *argv, const char *fmt, ...)
+rb_get_kwargs(VALUE keyword_hash, const ID *table, int required, int optional, VALUE *values)
 {
-    int n, i = 0;
-    const char *p = fmt;
-    VALUE *var;
-    va_list vargs;
+    int i = 0, j;
+    int rest = 0;
+    VALUE missing = Qnil;
+    st_data_t key;
 
-    va_start(vargs, fmt);
+#define extract_kwarg(keyword, val) \
+    (key = (st_data_t)(keyword), values ? \
+     (rb_hash_stlike_delete(keyword_hash, &key, &(val)) || ((val) = Qundef, 0)) : \
+     rb_hash_stlike_lookup(keyword_hash, key, NULL))
 
-    if (*p == '*') goto rest_arg;
+    if (NIL_P(keyword_hash)) keyword_hash = 0;
 
-    if (ISDIGIT(*p)) {
-	n = *p - '0';
-	if (n > argc)
-	    rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)", argc, n);
-	for (i=0; i<n; i++) {
-	    var = va_arg(vargs, VALUE*);
-	    if (var) *var = argv[i];
+    if (optional < 0) {
+	rest = 1;
+	optional = -1-optional;
+    }
+    if (required) {
+	for (; i < required; i++) {
+	    VALUE keyword = ID2SYM(table[i]);
+	    if (keyword_hash) {
+                if (extract_kwarg(keyword, values[i])) {
+		    continue;
+		}
+	    }
+	    if (NIL_P(missing)) missing = rb_ary_tmp_new(1);
+	    rb_ary_push(missing, keyword);
+	}
+	if (!NIL_P(missing)) {
+	    rb_keyword_error("missing", missing);
 	}
-	p++;
     }
-    else {
-	goto error;
+    j = i;
+    if (optional && keyword_hash) {
+	for (i = 0; i < optional; i++) {
+            if (extract_kwarg(ID2SYM(table[required+i]), values[required+i])) {
+		j++;
+	    }
+	}
+    }
+    if (!rest && keyword_hash) {
+	if (RHASH_SIZE(keyword_hash) > (unsigned int)(values ? 0 : j)) {
+	    unknown_keyword_error(keyword_hash, table, required+optional);
+	}
     }
+    if (values && !keyword_hash) {
+        for (i = 0; i < required + optional; i++) {
+            values[i] = Qundef;
+        }
+    }
+    return j;
+#undef extract_kwarg
+}
+
+struct rb_scan_args_t {
+    int kw_flag;
+    int n_lead;
+    int n_opt;
+    int n_trail;
+    bool f_var;
+    bool f_hash;
+    bool f_block;
+};
+
+static void
+rb_scan_args_parse(int kw_flag, const char *fmt, struct rb_scan_args_t *arg)
+{
+    const char *p = fmt;
+
+    memset(arg, 0, sizeof(*arg));
+    arg->kw_flag = kw_flag;
 
     if (ISDIGIT(*p)) {
-	n = i + *p - '0';
-	for (; i<n; i++) {
-	    var = va_arg(vargs, VALUE*);
-	    if (argc > i) {
-		if (var) *var = argv[i];
-	    }
-	    else {
-		if (var) *var = Qnil;
-	    }
+        arg->n_lead = *p - '0';
+	p++;
+	if (ISDIGIT(*p)) {
+            arg->n_opt = *p - '0';
+	    p++;
 	}
+    }
+    if (*p == '*') {
+        arg->f_var = 1;
+	p++;
+    }
+    if (ISDIGIT(*p)) {
+        arg->n_trail = *p - '0';
+	p++;
+    }
+    if (*p == ':') {
+        arg->f_hash = 1;
+	p++;
+    }
+    if (*p == '&') {
+        arg->f_block = 1;
 	p++;
     }
+    if (*p != '\0') {
+	rb_fatal("bad scan arg format: %s", fmt);
+    }
+}
+
+static int
+rb_scan_args_assign(const struct rb_scan_args_t *arg, int argc, const VALUE *const argv, va_list vargs)
+{
+    int i, argi = 0;
+    VALUE *var, hash = Qnil;
+#define rb_scan_args_next_param() va_arg(vargs, VALUE *)
+    const int kw_flag = arg->kw_flag;
+    const int n_lead = arg->n_lead;
+    const int n_opt = arg->n_opt;
+    const int n_trail = arg->n_trail;
+    const int n_mand = n_lead + n_trail;
+    const bool f_var = arg->f_var;
+    const bool f_hash = arg->f_hash;
+    const bool f_block = arg->f_block;
+
+    /* capture an option hash - phase 1: pop from the argv */
+    if (f_hash && argc > 0) {
+        VALUE last = argv[argc - 1];
+        if (rb_scan_args_keyword_p(kw_flag, last)) {
+            hash = rb_hash_dup(last);
+            argc--;
+        }
+    }
+
+    if (argc < n_mand) {
+        goto argc_error;
+    }
 
-    if(*p == '*') {
-      rest_arg:
-	var = va_arg(vargs, VALUE*);
-	if (argc > i) {
-	    if (var) *var = rb_ary_new4(argc-i, argv+i);
-	    i = argc;
+    /* capture leading mandatory arguments */
+    for (i = 0; i < n_lead; i++) {
+        var = rb_scan_args_next_param();
+        if (var) *var = argv[argi];
+	argi++;
+    }
+    /* capture optional arguments */
+    for (i = 0; i < n_opt; i++) {
+        var = rb_scan_args_next_param();
+        if (argi < argc - n_trail) {
+            if (var) *var = argv[argi];
+	    argi++;
+	}
+	else {
+	    if (var) *var = Qnil;
+	}
+    }
+    /* capture variable length arguments */
+    if (f_var) {
+        int n_var = argc - argi - n_trail;
+
+        var = rb_scan_args_next_param();
+	if (0 < n_var) {
+            if (var) *var = rb_ary_new_from_values(n_var, &argv[argi]);
+	    argi += n_var;
 	}
 	else {
 	    if (var) *var = rb_ary_new();
 	}
-	p++;
     }
-
-    if (*p == '&') {
-	var = va_arg(vargs, VALUE*);
+    /* capture trailing mandatory arguments */
+    for (i = 0; i < n_trail; i++) {
+        var = rb_scan_args_next_param();
+        if (var) *var = argv[argi];
+	argi++;
+    }
+    /* capture an option hash - phase 2: assignment */
+    if (f_hash) {
+        var = rb_scan_args_next_param();
+        if (var) *var = hash;
+    }
+    /* capture iterator block */
+    if (f_block) {
+        var = rb_scan_args_next_param();
 	if (rb_block_given_p()) {
 	    *var = rb_block_proc();
 	}
 	else {
 	    *var = Qnil;
 	}
-	p++;
     }
-    va_end(vargs);
 
-    if (*p != '\0') {
-	goto error;
+    if (argi == argc) {
+        return argc;
     }
 
-    if (argc > i) {
-	rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)", argc, i);
+  argc_error:
+    return -(argc + 1);
+#undef rb_scan_args_next_param
+}
+
+static int
+rb_scan_args_result(const struct rb_scan_args_t *const arg, int argc)
+{
+    const int n_lead = arg->n_lead;
+    const int n_opt = arg->n_opt;
+    const int n_trail = arg->n_trail;
+    const int n_mand = n_lead + n_trail;
+    const bool f_var = arg->f_var;
+
+    if (argc >= 0) {
+        return argc;
     }
 
-    return argc;
+    argc = -argc - 1;
+    rb_error_arity(argc, n_mand, f_var ? UNLIMITED_ARGUMENTS : n_mand + n_opt);
+    UNREACHABLE_RETURN(-1);
+}
+
+#undef rb_scan_args
+int
+rb_scan_args(int argc, const VALUE *argv, const char *fmt, ...)
+{
+    va_list vargs;
+    struct rb_scan_args_t arg;
+    rb_scan_args_parse(RB_SCAN_ARGS_PASS_CALLED_KEYWORDS, fmt, &arg);
+    va_start(vargs,fmt);
+    argc = rb_scan_args_assign(&arg, argc, argv, vargs);
+    va_end(vargs);
+    return rb_scan_args_result(&arg, argc);
+}
+
+#undef rb_scan_args_kw
+int
+rb_scan_args_kw(int kw_flag, int argc, const VALUE *argv, const char *fmt, ...)
+{
+    va_list vargs;
+    struct rb_scan_args_t arg;
+    rb_scan_args_parse(kw_flag, fmt, &arg);
+    va_start(vargs,fmt);
+    argc = rb_scan_args_assign(&arg, argc, argv, vargs);
+    va_end(vargs);
+    return rb_scan_args_result(&arg, argc);
+}
 
-  error:
-    rb_fatal("bad scan arg format: %s", fmt);
-    return 0;
+int
+rb_class_has_methods(VALUE c)
+{
+    return rb_id_table_size(RCLASS_M_TBL(c)) == 0 ? FALSE : TRUE;
 }
+
+/*!
+ * \}
+ */
diff --git a/common.mk b/common.mk
index 9ef95179cd..2c76f24924 100644
--- a/common.mk
+++ b/common.mk
@@ -1,56 +1,123 @@
+# -*- mode: makefile-gmake; indent-tabs-mode: t -*-
+
 bin: $(PROGRAM) $(WPROGRAM)
 lib: $(LIBRUBY)
 dll: $(LIBRUBY_SO)
 
-.SUFFIXES: .inc .h .c .y
-
-RUBYLIB       = -
+.SUFFIXES: .rbinc .rb .inc .h .c .y .i .$(ASMEXT) .$(DTRACE_EXT)
+
+# V=0 quiet, V=1 verbose.  other values don't work.
+V = 0
+Q1 = $(V:1=)
+Q = $(Q1:0=@)
+ECHO0 = $(ECHO1:0=echo)
+ECHO = @$(ECHO0)
+
+mflags = $(MFLAGS)
+gnumake_recursive =
+enable_shared = $(ENABLE_SHARED:no=)
+
+UNICODE_VERSION = 12.1.0
+UNICODE_EMOJI_VERSION = 12.1
+UNICODE_BETA = NO
+
+### set the following environment variable or uncomment the line if
+### the Unicode data files should be updated completely on every update ('make up',...).
+# ALWAYS_UPDATE_UNICODE = yes
+UNICODE_DATA_DIR = enc/unicode/data/$(UNICODE_VERSION)/ucd
+UNICODE_SRC_DATA_DIR = $(srcdir)/$(UNICODE_DATA_DIR)
+UNICODE_SRC_EMOJI_DATA_DIR = $(srcdir)/enc/unicode/data/emoji/$(UNICODE_EMOJI_VERSION)
+UNICODE_HDR_DIR = $(srcdir)/enc/unicode/$(UNICODE_VERSION)
+UNICODE_DATA_HEADERS = \
+	$(UNICODE_HDR_DIR)/casefold.h \
+	$(UNICODE_HDR_DIR)/name2ctype.h \
+	$(empty)
+
+RUBY_RELEASE_DATE = $(RUBY_RELEASE_YEAR)-$(RUBY_RELEASE_MONTH)-$(RUBY_RELEASE_DAY)
+RUBYLIB       = $(PATH_SEPARATOR)
 RUBYOPT       = -
+RUN_OPTS      = --disable-gems
+
+# GITPULLOPTIONS = --no-tags
 
-SPEC_GIT_BASE = git://github.com/rubyspec
-MSPEC_GIT_URL = $(SPEC_GIT_BASE)/mspec.git
-RUBYSPEC_GIT_URL = $(SPEC_GIT_BASE)/rubyspec.git
+INCFLAGS = -I. -I$(arch_hdrdir) -I$(hdrdir) -I$(srcdir) -I$(UNICODE_HDR_DIR)
+
+GEM_HOME =
+GEM_PATH =
+GEM_VENDOR =
+
+BENCHMARK_DRIVER_GIT_URL = https://github.com/benchmark-driver/benchmark-driver
+BENCHMARK_DRIVER_GIT_REF = v0.15.15
+SIMPLECOV_GIT_URL = https://github.com/colszowka/simplecov.git
+SIMPLECOV_GIT_REF = v0.17.0
+SIMPLECOV_HTML_GIT_URL = https://github.com/colszowka/simplecov-html.git
+SIMPLECOV_HTML_GIT_REF = v0.10.2
+DOCLIE_GIT_URL = https://github.com/ms-ati/docile.git
+DOCLIE_GIT_REF = v1.3.2
 
 STATIC_RUBY   = static-ruby
 
+TIMESTAMPDIR  = $(EXTOUT)/.timestamp
+RUBYCOMMONDIR = $(EXTOUT)/common
 EXTCONF       = extconf.rb
-RBCONFIG      = ./.rbconfig.time
 LIBRUBY_EXTS  = ./.libruby-with-ext.time
+REVISION_H    = ./.revision.time
+PLATFORM_D    = $(TIMESTAMPDIR)/.$(PLATFORM_DIR).time
+ENC_TRANS_D   = $(TIMESTAMPDIR)/.enc-trans.time
+RDOC          = $(XRUBY) "$(srcdir)/libexec/rdoc" --root "$(srcdir)" --encoding=UTF-8 --all
 RDOCOUT       = $(EXTOUT)/rdoc
-ID_H_TARGET   = -id.h-
+HTMLOUT       = $(EXTOUT)/html
+CAPIOUT       = doc/capi
+INSTALL_DOC_OPTS = --rdoc-output="$(RDOCOUT)" --html-output="$(HTMLOUT)"
+RDOC_GEN_OPTS = --page-dir "$(srcdir)/doc" --no-force-update
 
-DMYEXT	      = dmyext.$(OBJEXT)
+INITOBJS      = dmyext.$(OBJEXT) dmyenc.$(OBJEXT)
 NORMALMAINOBJ = main.$(OBJEXT)
 MAINOBJ       = $(NORMALMAINOBJ)
-EXTOBJS	      = 
-DLDOBJS	      = $(DMYEXT)
-MINIOBJS      = $(ARCHMINIOBJS) dmyencoding.$(OBJEXT) miniprelude.$(OBJEXT)
+DLDOBJS	      = $(INITOBJS)
+EXTSOLIBS     =
+MINIOBJS      = $(ARCHMINIOBJS) miniinit.$(OBJEXT) dmyext.$(OBJEXT)
 ENC_MK        = enc.mk
+MAKE_ENC      = -f $(ENC_MK) V="$(V)" UNICODE_HDR_DIR="$(UNICODE_HDR_DIR)" \
+		RUBY="$(MINIRUBY)" MINIRUBY="$(MINIRUBY)" $(mflags)
 
 COMMONOBJS    = array.$(OBJEXT) \
+		ast.$(OBJEXT) \
 		bignum.$(OBJEXT) \
 		class.$(OBJEXT) \
 		compar.$(OBJEXT) \
+		compile.$(OBJEXT) \
 		complex.$(OBJEXT) \
+		cont.$(OBJEXT) \
+		debug.$(OBJEXT) \
+		debug_counter.$(OBJEXT) \
 		dir.$(OBJEXT) \
+		dln_find.$(OBJEXT) \
+		encoding.$(OBJEXT) \
 		enum.$(OBJEXT) \
 		enumerator.$(OBJEXT) \
 		error.$(OBJEXT) \
 		eval.$(OBJEXT) \
-		load.$(OBJEXT) \
-		proc.$(OBJEXT) \
 		file.$(OBJEXT) \
 		gc.$(OBJEXT) \
 		hash.$(OBJEXT) \
 		inits.$(OBJEXT) \
 		io.$(OBJEXT) \
+		iseq.$(OBJEXT) \
+		load.$(OBJEXT) \
 		marshal.$(OBJEXT) \
 		math.$(OBJEXT) \
+		memory_view.$(OBJEXT) \
+		mjit.$(OBJEXT) \
+		mjit_compile.$(OBJEXT) \
+		node.$(OBJEXT) \
 		numeric.$(OBJEXT) \
 		object.$(OBJEXT) \
 		pack.$(OBJEXT) \
 		parse.$(OBJEXT) \
+		proc.$(OBJEXT) \
 		process.$(OBJEXT) \
+		ractor.$(OBJEXT) \
 		random.$(OBJEXT) \
 		range.$(OBJEXT) \
 		rational.$(OBJEXT) \
@@ -62,192 +129,355 @@ COMMONOBJS    = array.$(OBJEXT) \
 		regparse.$(OBJEXT) \
 		regsyntax.$(OBJEXT) \
 		ruby.$(OBJEXT) \
-		safe.$(OBJEXT) \
+		scheduler.$(OBJEXT) \
 		signal.$(OBJEXT) \
 		sprintf.$(OBJEXT) \
 		st.$(OBJEXT) \
 		strftime.$(OBJEXT) \
 		string.$(OBJEXT) \
 		struct.$(OBJEXT) \
+		symbol.$(OBJEXT) \
+		thread.$(OBJEXT) \
 		time.$(OBJEXT) \
 		transcode.$(OBJEXT) \
+		transient_heap.$(OBJEXT) \
 		util.$(OBJEXT) \
 		variable.$(OBJEXT) \
 		version.$(OBJEXT) \
-		compile.$(OBJEXT) \
-		debug.$(OBJEXT) \
-		iseq.$(OBJEXT) \
 		vm.$(OBJEXT) \
+		vm_backtrace.$(OBJEXT) \
 		vm_dump.$(OBJEXT) \
-		thread.$(OBJEXT) \
-		cont.$(OBJEXT) \
+		vm_sync.$(OBJEXT) \
+		vm_trace.$(OBJEXT) \
+		$(COROUTINE_OBJ) \
+		$(DTRACE_OBJ) \
 		$(BUILTIN_ENCOBJS) \
 		$(BUILTIN_TRANSOBJS) \
 		$(MISSING)
 
-OBJS          = dln.$(OBJEXT) \
-		encoding.$(OBJEXT) \
-		prelude.$(OBJEXT) \
+EXPORTOBJS    = $(DLNOBJ) \
+		localeinit.$(OBJEXT) \
+		loadpath.$(OBJEXT) \
 		$(COMMONOBJS)
 
+OBJS          = $(EXPORTOBJS) builtin.$(OBJEXT)
+ALLOBJS       = $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(INITOBJS)
+
 GOLFOBJS      = goruby.$(OBJEXT) golf_prelude.$(OBJEXT)
 
-PRELUDE_SCRIPTS = $(srcdir)/prelude.rb $(srcdir)/enc/prelude.rb $(srcdir)/gem_prelude.rb
-PRELUDES      = prelude.c miniprelude.c
-GOLFPRELUDES = golf_prelude.c
+DEFAULT_PRELUDES = $(GEM_PRELUDE)
+PRELUDE_SCRIPTS = $(DEFAULT_PRELUDES)
+GEM_PRELUDE   =
+PRELUDES      = {$(srcdir)}miniprelude.c
+GOLFPRELUDES  = {$(srcdir)}golf_prelude.c
 
 SCRIPT_ARGS   =	--dest-dir="$(DESTDIR)" \
 		--extout="$(EXTOUT)" \
 		--mflags="$(MFLAGS)" \
 		--make-flags="$(MAKEFLAGS)"
 EXTMK_ARGS    =	$(SCRIPT_ARGS) --extension $(EXTS) --extstatic $(EXTSTATIC) \
-		--make-flags="MINIRUBY='$(MINIRUBY)'" --
-INSTRUBY      =	$(MINIRUBY) $(srcdir)/instruby.rb
+		--make-flags="V=$(V) MINIRUBY='$(MINIRUBY)'" \
+		--gnumake=$(gnumake) --extflags="$(EXTLDFLAGS)" \
+		--
+INSTRUBY      =	$(SUDO) $(RUNRUBY) -r./$(arch)-fake $(tooldir)/rbinstall.rb
 INSTRUBY_ARGS =	$(SCRIPT_ARGS) \
 		--data-mode=$(INSTALL_DATA_MODE) \
 		--prog-mode=$(INSTALL_PROG_MODE) \
-		--installed-list $(INSTALLED_LIST)
+		--installed-list $(INSTALLED_LIST) \
+		--mantype="$(MANTYPE)"
 INSTALL_PROG_MODE = 0755
 INSTALL_DATA_MODE = 0644
 
-PRE_LIBRUBY_UPDATE = $(MINIRUBY) -e 'ARGV[1] or File.unlink(ARGV[0]) rescue nil' -- \
-			$(LIBRUBY_EXTS) $(LIBRUBY_SO_UPDATE)
-
 TESTSDIR      = $(srcdir)/test
+TOOL_TESTSDIR = $(tooldir)/test
+TEST_EXCLUDES = --excludes-dir=$(TESTSDIR)/excludes --name=!/memory_leak/
 TESTWORKDIR   = testwork
+TESTOPTS      = $(RUBY_TESTOPTS)
 
 TESTRUN_SCRIPT = $(srcdir)/test.rb
 
-BOOTSTRAPRUBY = $(BASERUBY)
-
-COMPILE_PRELUDE = $(MINIRUBY) -I$(srcdir) -rrbconfig $(srcdir)/tool/compile_prelude.rb
+COMPILE_PRELUDE = $(tooldir)/generic_erb.rb $(srcdir)/template/prelude.c.tmpl \
+	$(tooldir)/ruby_vm/helpers/c_escape.rb
 
-all: encs exts main
+SHOWFLAGS = showflags
 
-main: exts
-	@$(RUNCMD) $(MKMAIN_CMD) MAKE=$(MAKE)
+MAKE_LINK = $(MINIRUBY) -rfileutils -e "include FileUtils::Verbose" \
+	  -e "src, dest = ARGV" \
+	  -e "exit if File.identical?(src, dest) or cmp(src, dest) rescue nil" \
+	  -e "def noraise; yield; rescue; rescue NotImplementedError; end" \
+	  -e "noraise {ln_sf('../'*dest.count('/')+src, dest)} or" \
+	  -e "noraise {ln(src, dest)} or" \
+	  -e "cp(src, dest)"
 
-exts: $(MKMAIN_CMD)
 
-$(MKMAIN_CMD): $(MKFILES) incs $(PREP) $(RBCONFIG) $(LIBRUBY) 
-	@$(MINIRUBY) $(srcdir)/ext/extmk.rb --make="$(MAKE)" --command-output=$@ $(EXTMK_ARGS)
+all: $(SHOWFLAGS) main docs
 
-prog: $(PROGRAM) $(WPROGRAM)
+main: $(SHOWFLAGS) exts $(ENCSTATIC:static=lib)encs programs
+	@$(NULLCMD)
 
-loadpath: $(PREP)
-	$(MINIRUBY) -e 'p $$:'
+mjit-headers: $(MJIT_SUPPORT)-mjit-headers
+no-mjit-headers: PHONY
+yes-mjit-headers: mjit_config.h PHONY
+
+mjit.$(OBJEXT): mjit_config.h
+mjit_config.h: Makefile
+
+
+# These rules using MJIT_HEADER_SUFFIX must be in common.mk, not
+# Makefile.in, in order to override the macro in defs/universal.mk.
+
+# Other `-Dxxx`s preceding `-DMJIT_HEADER` will be removed in transform_mjit_header.rb.
+# So `-DMJIT_HEADER` should be passed first when rb_mjit_header.h is generated.
+$(TIMESTAMPDIR)/$(MJIT_HEADER:.h=)$(MJIT_HEADER_SUFFIX).time: probes.h vm.$(OBJEXT) \
+		$(TIMESTAMPDIR)/$(arch)/.time $(tooldir)/mjit_tabs.rb $(PREP) $(RBCONFIG)
+	$(ECHO) building $(@F:.time=.h)
+	$(MINIRUBY) $(tooldir)/mjit_tabs.rb "$(MJIT_TABS)" \
+		$(CPP) -DMJIT_HEADER $(MJIT_HEADER_FLAGS) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(srcdir)/vm.c $(CPPOUTFLAG)$(@F:.time=.h).new
+	$(Q) $(IFCHANGE) "--timestamp=$@" $(@F:.time=.h) $(@F:.time=.h).new
+
+$(MJIT_HEADER:.h=)$(MJIT_HEADER_SUFFIX).h: $(TIMESTAMPDIR)/$(MJIT_HEADER:.h=)$(MJIT_HEADER_SUFFIX).time
+
+$(MJIT_MIN_HEADER:.h=)$(MJIT_HEADER_SUFFIX).h: \
+		$(TIMESTAMPDIR)/$(MJIT_HEADER:.h=)$(MJIT_HEADER_SUFFIX).time \
+		$(tooldir)/transform_mjit_header.rb $(PREP) \
+		$(MJIT_HEADER:.h=)$(MJIT_HEADER_SUFFIX).h
+	$(ECHO) building $@
+	$(MINIRUBY) $(tooldir)/transform_mjit_header.rb "$(CC) $(ARCH_FLAG) $(CFLAGS)" $(MJIT_HEADER:.h=)$(MJIT_HEADER_ARCH).h $@
+	$(Q) $(MAKEDIRS) $(MJIT_HEADER_INSTALL_DIR)
+	$(Q) $(MAKE_LINK) $@ $(MJIT_HEADER_INSTALL_DIR)/$(@F)
+
+.PHONY: showflags
+exts enc trans: $(SHOWFLAGS)
+showflags:
+	$(MESSAGE_BEGIN) \
+	"	BASERUBY = $(BASERUBY)" \
+	"	CC = $(CC)" \
+	"	LD = $(LD)" \
+	"	LDSHARED = $(LDSHARED)" \
+	"	CFLAGS = $(CFLAGS)" \
+	"	XCFLAGS = $(XCFLAGS)" \
+	"	CPPFLAGS = $(CPPFLAGS)" \
+	"	DLDFLAGS = $(DLDFLAGS)" \
+	"	SOLIBS = $(SOLIBS)" \
+	"	LANG = $(LANG)" \
+	"	LC_ALL = $(LC_ALL)" \
+	"	LC_CTYPE = $(LC_CTYPE)" \
+	"	MFLAGS = $(MFLAGS)" \
+	$(MESSAGE_END)
+	-@$(CC_VERSION)
+
+.PHONY: showconfig
+showconfig:
+	@$(ECHO_BEGIN) \
+	$(configure_args) \
+	$(ECHO_END)
+
+EXTS_NOTE = -f $(EXTS_MK) $(mflags) RUBY="$(MINIRUBY)" top_srcdir="$(srcdir)" note
+
+exts: build-ext
+
+EXTS_MK = exts.mk
+$(EXTS_MK): ext/configure-ext.mk $(srcdir)/template/exts.mk.tmpl \
+	    $(TIMESTAMPDIR)/$(arch)/.time $(TIMESTAMPDIR)/.RUBYCOMMONDIR.time
+	$(Q)$(MAKE) -f ext/configure-ext.mk $(mflags) V=$(V) EXTSTATIC=$(EXTSTATIC) \
+		gnumake=$(gnumake) MINIRUBY="$(MINIRUBY)" \
+		EXTLDFLAGS="$(EXTLDFLAGS)" srcdir="$(srcdir)"
+	$(ECHO) generating makefile $@
+	$(Q)$(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ -c \
+	    $(srcdir)/template/exts.mk.tmpl --gnumake=$(gnumake) --configure-exts=ext/configure-ext.mk
+
+ext/configure-ext.mk: $(PREP) all-incs $(MKFILES) $(RBCONFIG) $(LIBRUBY) \
+		$(srcdir)/template/configure-ext.mk.tmpl
+	$(ECHO) generating makefiles $@
+	$(Q)$(MAKEDIRS) $(@D)
+	$(Q)$(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ -c \
+	    $(srcdir)/template/$(@F).tmpl --srcdir="$(srcdir)" \
+	    --miniruby="$(MINIRUBY)" --script-args='$(SCRIPT_ARGS)'
+
+configure-ext: $(EXTS_MK)
+
+build-ext: $(EXTS_MK)
+	$(Q)$(MAKE) -f $(EXTS_MK) $(mflags) libdir="$(libdir)" LIBRUBY_EXTS=$(LIBRUBY_EXTS) \
+	    EXTENCS="$(ENCOBJS)" UPDATE_LIBRARIES=no $(EXTSTATIC)
+	$(Q)$(MAKE) $(EXTS_NOTE)
+
+exts-note: $(EXTS_MK)
+	$(Q)$(MAKE) $(EXTS_NOTE)
+
+ext/extinit.c: $(srcdir)/template/extinit.c.tmpl $(PREP)
+	$(Q)$(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ -c \
+	    $(srcdir)/template/extinit.c.tmpl $(EXTINITS)
+
+prog: program wprogram
+programs: $(PROGRAM) $(WPROGRAM) $(arch)-fake.rb
 
 $(PREP): $(MKFILES)
 
-miniruby$(EXEEXT): config.status $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(DMYEXT) $(ARCHFILE)
-
-GORUBY = go$(RUBY_INSTALL_NAME)
-golf: $(LIBRUBY) $(GOLFOBJS)
-	$(MAKE) $(MFLAGS) MAINOBJ="$(GOLFOBJS)" PROGRAM=$(GORUBY)$(EXEEXT) program
-
-program: $(PROGRAM)
-
-$(PROGRAM): $(LIBRUBY) $(MAINOBJ) $(OBJS) $(EXTOBJS) $(SETUP) $(PREP)
+miniruby$(EXEEXT): config.status $(ALLOBJS) $(ARCHFILE)
 
-$(LIBRUBY_A):	$(OBJS) $(DMYEXT) $(ARCHFILE)
+objs: $(ALLOBJS)
 
-$(LIBRUBY_SO):	$(OBJS) $(DLDOBJS) $(LIBRUBY_A) $(PREP) $(LIBRUBY_SO_UPDATE) $(BUILTIN_ENCOBJS)
+GORUBY = go$(RUBY_INSTALL_NAME)
+GOLF = $(GORUBY)
+golf: $(GOLF)
+$(GOLF): $(LIBRUBY) $(GOLFOBJS) PHONY
+	$(Q) $(MAKE) $(mflags) \
+		GOLF=_dummy_golf_target_to_avoid_conflict_just_in_case_ \
+		MAINOBJ=goruby.$(OBJEXT) \
+		EXTOBJS="golf_prelude.$(OBJEXT) $(EXTOBJS)" \
+		PROGRAM=$(GORUBY)$(EXEEXT) \
+		V=$(V) \
+	program
+capi: $(CAPIOUT)/.timestamp PHONY
+
+$(CAPIOUT)/.timestamp: Doxyfile $(PREP)
+	$(Q) $(MAKEDIRS) "$(@D)"
+	$(ECHO) generating capi
+	-$(Q) $(DOXYGEN) -b
+	$(Q) $(MINIRUBY) -e 'File.open(ARGV[0], "w"){'"|f|"' f.puts(Time.now)}' "$@"
+
+Doxyfile: $(srcdir)/template/Doxyfile.tmpl $(PREP) $(tooldir)/generic_erb.rb $(RBCONFIG)
+	$(ECHO) generating $@
+	$(Q) $(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ $(srcdir)/template/Doxyfile.tmpl \
+	--srcdir="$(srcdir)" --miniruby="$(MINIRUBY)"
+
+program: $(SHOWFLAGS) $(PROGRAM)
+wprogram: $(SHOWFLAGS) $(WPROGRAM)
+mini: PHONY miniruby$(EXEEXT)
+
+$(PROGRAM) $(WPROGRAM): $(LIBRUBY) $(MAINOBJ) $(OBJS) $(EXTOBJS) $(SETUP) $(PREP)
+
+$(LIBRUBY_A):	$(LIBRUBY_A_OBJS) $(MAINOBJ) $(INITOBJS) $(ARCHFILE)
+
+$(LIBRUBY_SO):	$(OBJS) $(DLDOBJS) $(LIBRUBY_A) $(PREP) $(BUILTIN_ENCOBJS)
 
 $(LIBRUBY_EXTS):
-	@exit > $@
+	@$(NULLCMD) > $@
 
 $(STATIC_RUBY)$(EXEEXT): $(MAINOBJ) $(DLDOBJS) $(EXTOBJS) $(LIBRUBY_A)
-	@$(RM) $@
-	$(PURIFY) $(CC) $(MAINOBJ) $(DLDOBJS) $(EXTOBJS) $(LIBRUBY_A) $(MAINLIBS) $(EXTLIBS) $(LIBS) $(OUTFLAG)$@ $(LDFLAGS) $(XLDFLAGS)
-
-ruby.imp: $(OBJS)
-	@$(NM) -Pgp $(OBJS) | awk 'BEGIN{print "#!"}; $$2~/^[BD]$$/{print $$1}' | sort -u -o $@
-
-install: install-nodoc $(RDOCTARGET)
-install-all: install-nodoc install-doc
+	$(Q)$(RM) $@
+	$(PURIFY) $(CC) $(MAINOBJ) $(DLDOBJS) $(LIBRUBY_A) $(MAINLIBS) $(EXTLIBS) $(LIBS) $(OUTFLAG)$@ $(LDFLAGS) $(XLDFLAGS)
+
+ruby.imp: $(COMMONOBJS)
+	$(Q){ \
+	$(NM) -Pgp $(COMMONOBJS) | \
+	awk 'BEGIN{print "#!"}; $$2~/^[A-TV-Z]$$/&&$$1!~/^$(SYMBOL_PREFIX)(Init_|InitVM_|ruby_static_id_|.*_threadptr_|rb_ec_)|^\./{print $$1}'; \
+	($(CHDIR) $(srcdir) && \
+	 exec sed -n '/^MJIT_FUNC_EXPORTED/!d;N;s/.*\n\(rb_[a-zA-Z_0-9]*\).*/$(SYMBOL_PREFIX)\1/p' cont.c gc.c thread*c vm*.c) \
+	} | \
+	sort -u -o $@
+
+install: install-$(INSTALLDOC)
+docs: $(DOCTARGETS)
+pkgconfig-data: $(ruby_pc)
+$(ruby_pc): $(srcdir)/template/ruby.pc.in config.status
+
+install-all: docs pre-install-all do-install-all post-install-all
+pre-install-all:: all pre-install-local pre-install-ext pre-install-gem pre-install-doc
+do-install-all: pre-install-all
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) $(INSTALL_DOC_OPTS)
+post-install-all:: post-install-local post-install-ext post-install-gem post-install-doc
+	@$(NULLCMD)
 
 install-nodoc: pre-install-nodoc do-install-nodoc post-install-nodoc
-pre-install-nodoc:: pre-install-local pre-install-ext
-do-install-nodoc: $(PREP)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --mantype="$(MANTYPE)"
-post-install-nodoc:: post-install-local post-install-ext
+pre-install-nodoc:: pre-install-local pre-install-ext pre-install-gem
+do-install-nodoc: main pre-install-nodoc
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --exclude=doc
+post-install-nodoc:: post-install-local post-install-ext post-install-gem
 
 install-local: pre-install-local do-install-local post-install-local
 pre-install-local:: pre-install-bin pre-install-lib pre-install-man
-do-install-local: $(PREP)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local --mantype="$(MANTYPE)"
+do-install-local: $(PROGRAM) pre-install-local
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local
 post-install-local:: post-install-bin post-install-lib post-install-man
 
 install-ext: pre-install-ext do-install-ext post-install-ext
 pre-install-ext:: pre-install-ext-arch pre-install-ext-comm
-do-install-ext: $(PREP)
+do-install-ext: exts pre-install-ext
 	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=ext
 post-install-ext:: post-install-ext-arch post-install-ext-comm
 
 install-arch: pre-install-arch do-install-arch post-install-arch
 pre-install-arch:: pre-install-bin pre-install-ext-arch
-do-install-arch: $(PREP)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=bin --install=ext-arch
+do-install-arch: main do-install-arch
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=arch
 post-install-arch:: post-install-bin post-install-ext-arch
 
 install-comm: pre-install-comm do-install-comm post-install-comm
 pre-install-comm:: pre-install-lib pre-install-ext-comm pre-install-man
-do-install-comm: $(PREP)
+do-install-comm: $(PREP) pre-install-comm
 	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=lib --install=ext-comm --install=man
 post-install-comm:: post-install-lib post-install-ext-comm post-install-man
 
 install-bin: pre-install-bin do-install-bin post-install-bin
 pre-install-bin:: install-prereq
-do-install-bin: $(PREP)
+do-install-bin: $(PROGRAM) pre-install-bin
 	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=bin
 post-install-bin::
 	@$(NULLCMD)
 
 install-lib: pre-install-lib do-install-lib post-install-lib
 pre-install-lib:: install-prereq
-do-install-lib: $(PREP)
+do-install-lib: $(PREP) pre-install-lib
 	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=lib
 post-install-lib::
 	@$(NULLCMD)
 
 install-ext-comm: pre-install-ext-comm do-install-ext-comm post-install-ext-comm
 pre-install-ext-comm:: install-prereq
-do-install-ext-comm: $(PREP)
+do-install-ext-comm: exts pre-install-ext-comm
 	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=ext-comm
 post-install-ext-comm::
 	@$(NULLCMD)
 
 install-ext-arch: pre-install-ext-arch do-install-ext-arch post-install-ext-arch
 pre-install-ext-arch:: install-prereq
-do-install-ext-arch: $(PREP)
+do-install-ext-arch: exts pre-install-ext-arch
 	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=ext-arch
 post-install-ext-arch::
 	@$(NULLCMD)
 
 install-man: pre-install-man do-install-man post-install-man
 pre-install-man:: install-prereq
-do-install-man: $(PREP)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man --mantype="$(MANTYPE)"
+do-install-man: $(PREP) pre-install-man
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man
 post-install-man::
 	@$(NULLCMD)
 
+install-capi: capi pre-install-capi do-install-capi post-install-capi
+pre-install-capi:: install-prereq
+do-install-capi: $(PREP) pre-install-capi
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=capi
+post-install-capi::
+	@$(NULLCMD)
+
 what-where: no-install
-no-install: no-install-nodoc no-install-doc
+no-install: no-install-$(INSTALLDOC)
 what-where-all: no-install-all
-no-install-all: no-install-nodoc
+no-install-all: pre-no-install-all dont-install-all post-no-install-all
+pre-no-install-all:: pre-no-install-local pre-no-install-ext pre-no-install-doc
+dont-install-all: $(PROGRAM)
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=all $(INSTALL_DOC_OPTS)
+post-no-install-all:: post-no-install-local post-no-install-ext post-no-install-doc
+	@$(NULLCMD)
+
+uninstall: $(INSTALLED_LIST) sudo-precheck
+	$(Q)$(SUDO) $(MINIRUBY) $(tooldir)/rbuninstall.rb --destdir=$(DESTDIR) $(INSTALLED_LIST)
+
+reinstall: all uninstall install
 
 what-where-nodoc: no-install-nodoc
 no-install-nodoc: pre-no-install-nodoc dont-install-nodoc post-no-install-nodoc
 pre-no-install-nodoc:: pre-no-install-local pre-no-install-ext
 dont-install-nodoc:  $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --mantype="$(MANTYPE)"
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS)
 post-no-install-nodoc:: post-no-install-local post-no-install-ext
 
 what-where-local: no-install-local
 no-install-local: pre-no-install-local dont-install-local post-no-install-local
 pre-no-install-local:: pre-no-install-bin pre-no-install-lib pre-no-install-man
 dont-install-local: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local --mantype="$(MANTYPE)"
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local
 post-no-install-local:: post-no-install-bin post-no-install-lib post-no-install-man
 
 what-where-ext: no-install-ext
@@ -307,451 +537,15840 @@ what-where-man: no-install-man
 no-install-man: pre-no-install-man dont-install-man post-no-install-man
 pre-no-install-man:: install-prereq
 dont-install-man: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man --mantype="$(MANTYPE)"
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man
 post-no-install-man::
 	@$(NULLCMD)
 
 install-doc: rdoc pre-install-doc do-install-doc post-install-doc
 pre-install-doc:: install-prereq
-do-install-doc: $(PROGRAM)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=rdoc --rdoc-output="$(RDOCOUT)"
+do-install-doc: $(PROGRAM) pre-install-doc
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=rdoc $(INSTALL_DOC_OPTS)
 post-install-doc::
 	@$(NULLCMD)
 
-rdoc: $(PROGRAM) PHONY
+install-gem: pre-install-gem do-install-gem post-install-gem
+pre-install-gem:: prepare-gems pre-install-bin pre-install-lib pre-install-man
+do-install-gem: $(PROGRAM) pre-install-gem
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=gem
+post-install-gem::
+	@$(NULLCMD)
+
+install-dbg: pre-install-dbg do-install-dbg post-install-dbg
+pre-install-dbg::
+do-install-dbg: $(PROGRAM) pre-install-dbg
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=dbg
+post-install-dbg::
+	@$(NULLCMD)
+
+rdoc: PHONY main
 	@echo Generating RDoc documentation
-	$(RUNRUBY) "$(srcdir)/bin/rdoc" --all --ri --op "$(RDOCOUT)" "$(srcdir)"
+	$(Q) $(RDOC) --ri --op "$(RDOCOUT)" $(RDOC_GEN_OPTS) $(RDOCFLAGS) "$(srcdir)"
+
+html: PHONY main
+	@echo Generating RDoc HTML files
+	$(Q) $(RDOC) --op "$(HTMLOUT)" $(RDOC_GEN_OPTS) $(RDOCFLAGS) "$(srcdir)"
+
+rdoc-coverage: PHONY main
+	@echo Generating RDoc coverage report
+	$(Q) $(RDOC) --quiet -C $(RDOCFLAGS) "$(srcdir)"
+
+RDOCBENCHOUT=/tmp/rdocbench
+
+GCBENCH_ITEM=null
+
+gcbench: PHONY
+	$(Q) $(XRUBY) "$(srcdir)/benchmark/gc/gcbench.rb" $(GCBENCH_ITEM)
+
+gcbench-rdoc: PHONY
+	$(Q) $(XRUBY) "$(srcdir)/benchmark/gc/gcbench.rb" rdoc
+
+nodoc: PHONY
 
 what-where-doc: no-install-doc
 no-install-doc: pre-no-install-doc dont-install-doc post-no-install-doc
 pre-no-install-doc:: install-prereq
 dont-install-doc:: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=rdoc --rdoc-output="$(RDOCOUT)"
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=rdoc $(INSTALL_DOC_OPTS)
 post-no-install-doc::
 	@$(NULLCMD)
 
 CLEAR_INSTALLED_LIST = clear-installed-list
 
-install-prereq: $(CLEAR_INSTALLED_LIST)
-
-clear-installed-list:
-	@exit > $(INSTALLED_LIST)
-
-clean: clean-ext clean-local clean-enc clean-golf clean-rdoc clean-extout
-clean-local::
-	@$(RM) $(OBJS) $(MINIOBJS) $(MAINOBJ) $(LIBRUBY_A) $(LIBRUBY_SO) $(LIBRUBY) $(LIBRUBY_ALIASES)
-	@$(RM) $(PROGRAM) $(WPROGRAM) miniruby$(EXEEXT) dmyext.$(OBJEXT) $(ARCHFILE) .*.time
-	@$(RM) *.inc y.tab.c y.output encdb.h transdb.h
-clean-ext::
-clean-enc:
-	@-$(MAKE) -f $(ENC_MK) $(MFLAGS) clean
-clean-golf:
-	@$(RM) $(GORUBY)$(EXEEXT) $(GOLFOBJS)
-clean-rdoc:
-clean-extout:
-	@-$(RMDIRS) $(EXTOUT)/$(arch)
-
-distclean: distclean-ext distclean-local distclean-enc distclean-golf distclean-extout
+install-prereq: $(CLEAR_INSTALLED_LIST) yes-fake sudo-precheck PHONY
+
+clear-installed-list: PHONY
+	@> $(INSTALLED_LIST) set MAKE="$(MAKE)"
+
+clean: clean-ext clean-enc clean-golf clean-docs clean-extout clean-local clean-platform clean-spec
+clean-local:: clean-runnable
+	$(Q)$(RM) $(OBJS) $(MINIOBJS) $(MAINOBJ) $(LIBRUBY_A) $(LIBRUBY_SO) $(LIBRUBY) $(LIBRUBY_ALIASES)
+	$(Q)$(RM) $(PROGRAM) $(WPROGRAM) miniruby$(EXEEXT) dmyext.$(OBJEXT) dmyenc.$(OBJEXT) $(ARCHFILE) .*.time
+	$(Q)$(RM) y.tab.c y.output encdb.h transdb.h config.log rbconfig.rb $(ruby_pc) $(COROUTINE_H:/Context.h=/.time)
+	$(Q)$(RM) probes.h probes.$(OBJEXT) probes.stamp ruby-glommed.$(OBJEXT) ruby.imp ChangeLog $(STATIC_RUBY)$(EXEEXT)
+	$(Q)$(RM) GNUmakefile.old Makefile.old $(arch)-fake.rb bisect.sh $(ENC_TRANS_D) builtin_binary.inc
+	-$(Q) $(RMDIR) enc/jis enc/trans enc $(COROUTINE_H:/Context.h=) coroutine 2> $(NULL) || $(NULLCMD)
+
+bin/clean-runnable:: PHONY
+	$(Q)$(CHDIR) bin 2>$(NULL) && $(RM) $(PROGRAM) $(WPROGRAM) $(GORUBY)$(EXEEXT) bin/*.$(DLEXT) 2>$(NULL) || $(NULLCMD)
+lib/clean-runnable:: PHONY
+	$(Q)$(CHDIR) lib 2>$(NULL) && $(RM) $(LIBRUBY_A) $(LIBRUBY) $(LIBRUBY_ALIASES) $(RUBY_BASE_NAME)/$(RUBY_PROGRAM_VERSION) $(RUBY_BASE_NAME)/vendor_ruby 2>$(NULL) || $(NULLCMD)
+clean-runnable:: bin/clean-runnable lib/clean-runnable PHONY
+	$(Q)$(RMDIR) lib/$(RUBY_BASE_NAME) lib bin 2>$(NULL) || $(NULLCMD)
+clean-ext:: PHONY
+clean-golf: PHONY
+	$(Q)$(RM) $(GORUBY)$(EXEEXT) $(GOLFOBJS)
+clean-rdoc: PHONY
+clean-html: PHONY
+clean-capi: PHONY
+clean-platform: PHONY
+clean-extout: PHONY
+	-$(Q)$(RMDIR) $(EXTOUT)/$(arch) $(EXTOUT) 2> $(NULL) || $(NULLCMD)
+clean-docs: clean-rdoc clean-html clean-capi
+clean-spec: PHONY
+clean-rubyspec: clean-spec
+
+distclean: distclean-ext distclean-enc distclean-golf distclean-docs distclean-extout distclean-local distclean-platform distclean-spec
 distclean-local:: clean-local
-	@$(RM) $(MKFILES) rbconfig.rb yasmdata.rb encdb.h
-	@$(RM) config.cache config.log config.status config.status.lineno $(PRELUDES)
-	@$(RM) *~ *.bak *.stackdump core *.core gmon.out $(PREP)
-distclean-ext::
-distclean-enc: clean-enc
-	@-$(MAKE) -f $(ENC_MK) $(MFLAGS) distclean
+	$(Q)$(RM) $(MKFILES) yasmdata.rb *.inc $(PRELUDES) *.rbinc
+	$(Q)$(RM) config.cache config.status config.status.lineno
+	$(Q)$(RM) *~ *.bak *.stackdump core *.core gmon.out $(PREP)
+	-$(Q)$(RMALL) $(srcdir)/autom4te.cache
+distclean-ext:: PHONY
 distclean-golf: clean-golf
-	@$(RM) $(GOLFPRELUDES)
-distclean-rdoc:
+distclean-rdoc: clean-rdoc
+distclean-html: clean-html
+distclean-capi: clean-capi
+distclean-docs: clean-docs
 distclean-extout: clean-extout
-	@-$(RMDIRS) $(EXTOUT)
+distclean-platform: clean-platform
+distclean-spec: clean-spec
+distclean-rubyspec: distclean-spec
 
 realclean:: realclean-ext realclean-local realclean-enc realclean-golf realclean-extout
-realclean-local:: distclean-local
-	@$(RM) parse.c parse.h lex.c newline.c revision.h
-realclean-ext::
-realclean-enc:: distclean-enc
-realclean-golf: distclean-golf
-realclean-extout: distclean-extout
+realclean-local:: distclean-local realclean-srcs-local
 
-check: test test-all
+clean-srcs:: clean-srcs-local clean-srcs-ext
+realclean-srcs:: realclean-srcs-local realclean-srcs-ext
 
-btest: miniruby$(EXEEXT) PHONY
-	$(BOOTSTRAPRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(MINIRUBY)" $(OPTS)
+clean-srcs-local::
+	$(Q)$(RM) parse.c parse.h lex.c enc/trans/newline.c revision.h
+	$(Q)$(RM) id.c id.h probes.dmyh probes.h
+	$(Q)$(RM) encdb.h transdb.h verconf.h ruby-runner.h
+	$(Q)$(RM) mjit_config.h rb_mjit_header.h
+	$(Q)$(RM) $(MJIT_MIN_HEADER) $(MJIT_MIN_HEADER:.h=)$(MJIT_HEADER_SUFFIX:%=*).h
 
-btest-ruby: miniruby$(EXEEXT) $(RBCONFIG) $(PROGRAM) PHONY
-	@$(RUNRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(PROGRAM) -I$(srcdir)/lib" -q $(OPTS)
+realclean-srcs-local:: clean-srcs-local
+	$(Q)$(CHDIR) $(srcdir) && $(RM) \
+	  parse.c parse.h lex.c enc/trans/newline.c $(PRELUDES) revision.h \
+	  id.c id.h probes.dmyh configure aclocal.m4 tool/config.guess tool/config.sub gems/*.gem \
+	|| $(NULLCMD)
 
-test-sample: miniruby$(EXEEXT) $(RBCONFIG) $(PROGRAM) PHONY
-	@$(RUNRUBY) $(srcdir)/rubytest.rb
+clean-srcs-ext::
+realclean-srcs-ext:: clean-srcs-ext
 
-test-knownbug: miniruby$(EXEEXT) $(PROGRAM) $(RBCONFIG) PHONY
-	$(MINIRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(PROGRAM)" $(OPTS) $(srcdir)/KNOWNBUGS.rb
+realclean-ext:: PHONY
+realclean-golf: distclean-golf
+	$(Q)$(RM) $(GOLFPRELUDES)
+realclean-rdoc: distclean-rdoc
+realclean-html: distclean-html
+realclean-capi: distclean-capi
+realclean-docs: distclean-docs
+realclean-extout: distclean-extout
+realclean-platform: distclean-platform
+realclean-spec: distclean-spec
+realclean-rubyspec: realclean-spec
+
+clean-ext:: ext/clean gems/clean timestamp/clean
+distclean-ext:: ext/distclean gems/distclean timestamp/distclean
+realclean-ext:: ext/realclean gems/realclean timestamp/realclean
 
-test: test-sample btest-ruby test-knownbug
+ext/clean.mk ext/distclean.mk ext/realclean.mk::
+ext/clean:: ext/clean.mk
+ext/distclean:: ext/distclean.mk
+ext/realclean:: ext/realclean.mk
 
-test-all:
-	$(RUNRUBY) "$(srcdir)/test/runner.rb" $(TESTS)
+timestamp/clean:: ext/clean gems/clean
+timestamp/distclean:: ext/distclean gems/distclean
+timestamp/realclean:: ext/realclean gems/realclean
+
+timestamp/clean timestamp/distclean timestamp/realclean::
+	$(Q)$(RM) $(TIMESTAMPDIR)/.*.time $(TIMESTAMPDIR)/$(arch)/.time
+	$(Q)$(RMDIRS) $(TIMESTAMPDIR)/$(arch) $(TIMESTAMPDIR) 2> $(NULL) || $(NULLCMD)
+
+clean-ext::
+	-$(Q)$(RM) ext/extinit.$(OBJEXT)
+
+distclean-ext realclean-ext::
+	-$(Q)$(RM) $(EXTS_MK) ext/extinit.* ext/configure-ext.mk
+	-$(Q)$(RMDIR) ext 2> $(NULL) || $(NULLCMD)
+
+clean-enc distclean-enc realclean-enc: PHONY
+
+clean-enc: clean-enc.d
+
+clean-enc.d: PHONY
+	$(Q)$(RM) $(ENC_TRANS_D)
+	-$(Q) $(RMDIR) enc/jis enc/trans enc 2> $(NULL) || $(NULLCMD)
+
+clean-rdoc distclean-rdoc realclean-rdoc:
+	@echo $(@:-rdoc=ing) rdoc
+	$(Q)$(RMALL) $(RDOCOUT)
+
+clean-html distclean-html realclean-html:
+	@echo $(@:-html=ing) HTML
+	$(Q)$(RMALL) $(HTMLOUT)
+
+clean-capi distclean-capi realclean-capi:
+	@echo $(@:-capi=ing) capi
+	$(Q)$(RMALL) $(CAPIOUT)
+
+clean-platform distclean-platform realclean-platform:
+	$(Q) $(RM) $(PLATFORM_D)
+	-$(Q) $(RMDIR) $(PLATFORM_DIR) 2> $(NULL) || $(NULLCMD)
+
+RUBYSPEC_CAPIEXT = spec/ruby/optional/capi/ext
+clean-spec: PHONY
+	-$(Q) $(RM) $(RUBYSPEC_CAPIEXT)/*.$(OBJEXT) $(RUBYSPEC_CAPIEXT)/*.$(DLEXT)
+	-$(Q) $(RMDIRS) $(RUBYSPEC_CAPIEXT) 2> $(NULL) || $(NULLCMD)
+	-$(Q) $(RMALL) rubyspec_temp
+
+check: main test test-tool test-all test-spec
+	$(ECHO) check succeeded
+	-$(Q) if [ x"$(GIT)" != x ] && $(CHDIR) "$(srcdir)" && \
+	    b=`$(GIT) symbolic-ref --short HEAD 2>&1` && \
+	    u=`$(GIT) branch --list --format='%(upstream:short)' $$b`; then \
+	  set -x; $(GIT) --no-pager log --format=oneline -G "^ *# *include" $$u..HEAD --; \
+	fi
+check-ruby: test test-ruby
+
+fake: $(CROSS_COMPILING)-fake
+yes-fake: $(arch)-fake.rb $(RBCONFIG) PHONY
+no-fake -fake: PHONY
+
+# really doesn't depend on .o, just ensure newer than headers which
+# version.o depends on.
+$(arch)-fake.rb: $(srcdir)/template/fake.rb.in $(tooldir)/generic_erb.rb version.$(OBJEXT) miniruby$(EXEEXT)
+	$(ECHO) generating $@
+	$(Q) $(CPP) -DRUBY_EXPORT $(INCFLAGS) $(CPPFLAGS) "$(srcdir)/version.c" | \
+	$(BOOTSTRAPRUBY) "$(tooldir)/generic_erb.rb" -o $@ "$(srcdir)/template/fake.rb.in" \
+		i=- srcdir="$(srcdir)" BASERUBY="$(BASERUBY)"
+
+btest: $(TEST_RUNNABLE)-btest
+no-btest: PHONY
+yes-btest: fake miniruby$(EXEEXT) PHONY
+	$(Q)$(exec) $(BOOTSTRAPRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(BTESTRUBY) $(RUN_OPTS)" $(OPTS) $(TESTOPTS) $(BTESTS)
+
+btest-ruby: $(TEST_RUNNABLE)-btest-ruby
+no-btest-ruby: PHONY
+yes-btest-ruby: prog PHONY
+	$(Q)$(exec) $(RUNRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(PROGRAM) -I$(srcdir)/lib $(RUN_OPTS)" -q $(OPTS) $(TESTOPTS) $(BTESTS)
+
+rtest: fake miniruby$(EXEEXT) PHONY
+	$(Q)$(exec) $(BOOTSTRAPRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(BTESTRUBY) $(RUN_OPTS)" --sets=ractor -v
+
+test-basic: $(TEST_RUNNABLE)-test-basic
+no-test-basic: PHONY
+yes-test-basic: prog PHONY
+	$(Q)$(exec) $(RUNRUBY) "$(srcdir)/basictest/runner.rb" --run-opt=$(RUN_OPTS) $(OPTS) $(TESTOPTS)
+
+test-knownbugs: test-knownbug
+test-knownbug: $(TEST_RUNNABLE)-test-knownbug
+no-test-knownbug: PHONY
+yes-test-knownbug: prog PHONY
+	-$(exec) $(RUNRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(PROGRAM) $(RUN_OPTS)" $(OPTS) $(TESTOPTS) $(srcdir)/KNOWNBUGS.rb
+
+test-testframework: $(TEST_RUNNABLE)-test-testframework
+yes-test-testframework: prog PHONY
+	$(gnumake_recursive)$(Q)$(exec) $(RUNRUBY) "$(TOOL_TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" $(TESTOPTS) testunit minitest
+no-test-testframework: PHONY
+
+test-tool: $(TEST_RUNNABLE)-test-tool
+yes-test-tool: prog PHONY
+	$(gnumake_recursive)$(Q)$(exec) $(RUNRUBY) "$(TOOL_TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" $(TESTOPTS)
+no-test-tool: PHONY
+
+test-sample: test-basic # backward compatibility for mswin-build
+test-short: btest-ruby test-knownbug test-basic
+test: test-short
+
+# $ make test-all TESTOPTS="--help" displays more detail
+# for example, make test-all TESTOPTS="-j2 -v -n test-name -- test-file-name"
+test-all: $(TEST_RUNNABLE)-test-all
+yes-test-all: programs PHONY
+	$(gnumake_recursive)$(Q)$(exec) $(RUNRUBY) "$(TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" $(TEST_EXCLUDES) $(TESTOPTS) $(TESTS)
+TESTS_BUILD = mkmf
+no-test-all: PHONY
+	$(gnumake_recursive)$(MINIRUBY) -I"$(srcdir)/lib" "$(TESTSDIR)/runner.rb" $(TESTOPTS) $(TESTS_BUILD)
+
+test-almost: test-all
+yes-test-almost: yes-test-all
+no-test-almost: no-test-all
+
+test-ruby: $(TEST_RUNNABLE)-test-ruby
+no-test-ruby: PHONY
+yes-test-ruby: prog encs PHONY
+	$(gnumake_recursive)$(RUNRUBY) "$(TESTSDIR)/runner.rb" $(TEST_EXCLUDES) $(TESTOPTS) -- ruby -ext-
 
 extconf: $(PREP)
-	$(MAKEDIRS) "$(EXTCONFDIR)"
+	$(Q) $(MAKEDIRS) "$(EXTCONFDIR)"
 	$(RUNRUBY) -C "$(EXTCONFDIR)" $(EXTCONF) $(EXTCONFARGS)
 
-$(RBCONFIG): $(srcdir)/mkconfig.rb config.status $(PREP)
-	@$(MINIRUBY) $(srcdir)/mkconfig.rb -timestamp=$@ \
+$(RBCONFIG): $(tooldir)/mkconfig.rb config.status $(srcdir)/version.h
+	$(Q)$(BOOTSTRAPRUBY) -n \
+	-e 'BEGIN{version=ARGV.shift;mis=ARGV.dup}' \
+	-e 'END{abort "UNICODE version mismatch: #{mis}" unless mis.empty?}' \
+	-e '(mis.delete(ARGF.path); ARGF.close) if /ONIG_UNICODE_VERSION_STRING +"#{Regexp.quote(version)}"/o' \
+	$(UNICODE_VERSION) $(UNICODE_DATA_HEADERS)
+	$(Q)$(BOOTSTRAPRUBY) $(tooldir)/mkconfig.rb \
+		-arch=$(arch) -version=$(RUBY_PROGRAM_VERSION) \
 		-install_name=$(RUBY_INSTALL_NAME) \
-		-so_name=$(RUBY_SO_NAME) rbconfig.rb
+		-so_name=$(RUBY_SO_NAME) \
+		-unicode_version=$(UNICODE_VERSION) \
+		-unicode_emoji_version=$(UNICODE_EMOJI_VERSION) \
+	> rbconfig.tmp
+	$(IFCHANGE) "--timestamp=$@" rbconfig.rb rbconfig.tmp
+
+test-rubyspec: test-spec
+yes-test-rubyspec: yes-test-spec
+
+test-spec-precheck: main
+
+test-spec: $(TEST_RUNNABLE)-test-spec
+yes-test-spec: test-spec-precheck
+	$(gnumake_recursive)$(Q) \
+	$(RUNRUBY) -r./$(arch)-fake $(srcdir)/spec/mspec/bin/mspec run -B $(srcdir)/spec/default.mspec -I$(srcdir)/tool/lib $(MSPECOPT) $(SPECOPTS)
+no-test-spec:
+
+RUNNABLE = $(LIBRUBY_RELATIVE:no=un)-runnable
+runnable: $(RUNNABLE) prog $(tooldir)/mkrunnable.rb PHONY
+	$(Q) $(MINIRUBY) $(tooldir)/mkrunnable.rb -v $(EXTOUT)
+yes-runnable: PHONY
 
 encs: enc trans
-encs enc trans: $(ENC_MK) $(LIBRUBY) $(PREP)
-	$(MAKE) -f $(ENC_MK) RUBY="$(MINIRUBY)" MINIRUBY="$(MINIRUBY)" $(MFLAGS) $@
+libencs: libenc libtrans
+encs enc trans libencs libenc libtrans: $(SHOWFLAGS) $(ENC_MK) $(LIBRUBY) $(PREP) PHONY
+	$(ECHO) making $@
+	$(Q) $(MAKE) $(MAKE_ENC) $@
+
 
-enc: {$(VPATH)}encdb.h
-trans: {$(VPATH)}transdb.h
+libenc enc: {$(VPATH)}encdb.h
+libtrans trans: {$(VPATH)}transdb.h
 
+# Use MINIRUBY which loads fake.rb for cross compiling
 $(ENC_MK): $(srcdir)/enc/make_encmake.rb $(srcdir)/enc/Makefile.in $(srcdir)/enc/depend \
-	$(srcdir)/lib/mkmf.rb $(RBCONFIG)
-	$(MINIRUBY) $(srcdir)/enc/make_encmake.rb --builtin-encs="$(BUILTIN_ENCOBJS)" --builtin-transes="$(BUILTIN_TRANSOBJS)" $@ $(ENCS)
+	$(srcdir)/enc/encinit.c.erb $(srcdir)/lib/mkmf.rb $(RBCONFIG) fake
+	$(ECHO) generating $@
+	$(Q) $(MINIRUBY) $(srcdir)/enc/make_encmake.rb --builtin-encs="$(BUILTIN_ENCOBJS)" --builtin-transes="$(BUILTIN_TRANSOBJS)" --module$(ENCSTATIC) $(ENCS) $@
 
 .PRECIOUS: $(MKFILES)
 
+.PHONY: PHONY all fake prereq incs srcs preludes help
 .PHONY: test install install-nodoc install-doc dist
+.PHONY: loadpath golf capi rdoc install-prereq clear-installed-list
+.PHONY: clean clean-ext clean-local clean-enc clean-golf clean-rdoc clean-html clean-extout
+.PHONY: distclean distclean-ext distclean-local distclean-enc distclean-golf distclean-extout
+.PHONY: realclean realclean-ext realclean-local realclean-enc realclean-golf realclean-extout
+.PHONY: exam check test test-short test-all btest btest-ruby test-basic test-knownbug
+.PHONY: run runruby parse benchmark gdb gdb-ruby
+.PHONY: update-mspec update-rubyspec test-rubyspec test-spec
+.PHONY: touch-unicode-files
 
 PHONY:
 
-{$(VPATH)}parse.c: {$(VPATH)}parse.y $(srcdir)/tool/ytab.sed
-parse.h {$(VPATH)}parse.h: {$(VPATH)}parse.c
+{$(VPATH)}parse.c: {$(VPATH)}parse.y $(tooldir)/ytab.sed {$(VPATH)}id.h
+{$(VPATH)}parse.h: {$(VPATH)}parse.c
 
 {$(srcdir)}.y.c:
-	$(YACC) -d $(YFLAGS) -o y.tab.c $(<:\=/)
-	sed -f $(srcdir)/tool/ytab.sed -e "/^#/s!y\.tab\.c!$@!" y.tab.c > $@.new
-	@$(MV) $@.new $@
-	sed -e "/^#line.*y\.tab\.h/d;/^#line.*parse\.y/d" y.tab.h > $(@:.c=.h).new
-	@$(IFCHANGE) $(@:.c=.h) $(@:.c=.h).new
-	@$(RM) y.tab.c y.tab.h
+	$(ECHO) generating $@
+	$(Q)$(BASERUBY) $(tooldir)/id2token.rb --path-separator=.$(PATH_SEPARATOR)./ --vpath=$(VPATH) id.h $(SRC_FILE) > parse.tmp.y
+	$(Q)$(BASERUBY) $(tooldir)/pure_parser.rb parse.tmp.y $(YACC)
+	$(Q)$(RM) parse.tmp.y.bak
+	$(Q)$(YACC) -d $(YFLAGS) -o y.tab.c parse.tmp.y
+	$(Q)$(RM) parse.tmp.y
+	$(Q)sed -f $(tooldir)/ytab.sed -e "/^#/s|parse\.tmp\.[iy]|$(SRC_FILE)|" -e "/^#/s!y\.tab\.c!$@!" y.tab.c > $@.new
+	$(Q)$(MV) $@.new $@
+	$(Q)sed -e "/^#line.*y\.tab\.h/d;/^#line.*parse.*\.y/d" y.tab.h > $(@:.c=.h)
+	$(Q)$(RM) y.tab.c y.tab.h
+
+$(PLATFORM_D):
+	$(Q) $(MAKEDIRS) $(PLATFORM_DIR) $(@D)
+	@$(NULLCMD) > $@
+
+exe/$(PROGRAM): ruby-runner.c ruby-runner.h exe/.time miniruby$(EXEEXT) {$(VPATH)}config.h
+	$(Q) $(CC) $(CFLAGS) $(INCFLAGS) $(CPPFLAGS) -DRUBY_INSTALL_NAME=$(@F) $(COUTFLAG)ruby-runner.$(OBJEXT) -c $(CSRCFLAG)$(srcdir)/ruby-runner.c
+	$(Q) $(PURIFY) $(CC) $(CFLAGS) $(LDFLAGS) $(OUTFLAG)$@ ruby-runner.$(OBJEXT) $(LIBS)
+	$(Q) $(POSTLINK)
+	$(Q) ./miniruby$(EXEEXT) \
+	    -e 'prog, dest, inst = ARGV; dest += "/ruby"' \
+	    -e 'exit unless prog==inst' \
+	    -e 'unless prog=="ruby"' \
+	    -e '  begin File.unlink(dest); rescue Errno::ENOENT; end' \
+	    -e '  File.symlink(prog, dest)' \
+	    -e 'end' \
+	$(@F) $(@D) $(RUBY_INSTALL_NAME)$(EXEEXT)
+
+exe/.time:
+	$(Q) $(MAKEDIRS) $(@D)
+	@$(NULLCMD) > $@
+
+$(BUILTIN_ENCOBJS) $(BUILTIN_TRANSOBJS): $(ENC_TRANS_D)
+
+$(ENC_TRANS_D):
+	$(Q) $(MAKEDIRS) enc/trans $(@D)
+	@$(NULLCMD) > $@
+
+$(TIMESTAMPDIR)/$(arch)/.time:
+	$(Q)$(MAKEDIRS) $(@D) $(EXTOUT)/$(arch)
+	@$(NULLCMD) > $@
+
+$(TIMESTAMPDIR)/.RUBYCOMMONDIR.time:
+	$(Q)$(MAKEDIRS) $(@D) $(RUBYCOMMONDIR)
+	@$(NULLCMD) > $@
+
+###
+CCAN_DIR = {$(VPATH)}ccan
+
+RUBY_H_INCLUDES    = {$(VPATH)}ruby.h {$(VPATH)}config.h {$(VPATH)}defines.h \
+		     {$(VPATH)}intern.h {$(VPATH)}missing.h {$(VPATH)}st.h \
+		     {$(VPATH)}assert.h {$(VPATH)}subst.h
+
+###
 
 acosh.$(OBJEXT): {$(VPATH)}acosh.c
 alloca.$(OBJEXT): {$(VPATH)}alloca.c {$(VPATH)}config.h
-crypt.$(OBJEXT): {$(VPATH)}crypt.c
+crypt.$(OBJEXT): {$(VPATH)}crypt.c {$(VPATH)}crypt.h {$(VPATH)}missing/des_tables.c
 dup2.$(OBJEXT): {$(VPATH)}dup2.c
 erf.$(OBJEXT): {$(VPATH)}erf.c
+explicit_bzero.$(OBJEXT): {$(VPATH)}explicit_bzero.c
 finite.$(OBJEXT): {$(VPATH)}finite.c
 flock.$(OBJEXT): {$(VPATH)}flock.c
 memcmp.$(OBJEXT): {$(VPATH)}memcmp.c
 memmove.$(OBJEXT): {$(VPATH)}memmove.c
 mkdir.$(OBJEXT): {$(VPATH)}mkdir.c
+setproctitle.$(OBJEXT): {$(VPATH)}setproctitle.c
 strchr.$(OBJEXT): {$(VPATH)}strchr.c
 strdup.$(OBJEXT): {$(VPATH)}strdup.c
 strerror.$(OBJEXT): {$(VPATH)}strerror.c
+strlcat.$(OBJEXT): {$(VPATH)}strlcat.c
+strlcpy.$(OBJEXT): {$(VPATH)}strlcpy.c
 strstr.$(OBJEXT): {$(VPATH)}strstr.c
-strtod.$(OBJEXT): {$(VPATH)}strtod.c
-strtol.$(OBJEXT): {$(VPATH)}strtol.c
 nt.$(OBJEXT): {$(VPATH)}nt.c
-os2.$(OBJEXT): {$(VPATH)}os2.c
-dl_os2.$(OBJEXT): {$(VPATH)}dl_os2.c
-ia64.$(OBJEXT): {$(VPATH)}ia64.s
-	$(CC) $(CFLAGS) -c $<
 
-# when I use -I., there is confliction at "OpenFile" 
-# so, set . into environment varible "include"
-win32.$(OBJEXT): {$(VPATH)}win32.c $(RUBY_H_INCLUDES)
+.coroutine_obj $(COROUTINE_OBJ): \
+	{$(VPATH)}$(COROUTINE_SRC) \
+	$(COROUTINE_H:/Context.h=/.time)
+$(COROUTINE_H:/Context.h=/.time):
+	$(Q) $(MAKEDIRS) $(@D)
+	@$(NULLCMD) > $@
 
 ###
 
-RUBY_H_INCLUDES    = {$(VPATH)}ruby.h {$(VPATH)}config.h {$(VPATH)}defines.h \
-		     {$(VPATH)}intern.h {$(VPATH)}missing.h {$(VPATH)}st.h
-ENCODING_H_INCLUDES= {$(VPATH)}encoding.h {$(VPATH)}oniguruma.h
-ID_H_INCLUDES      = {$(VPATH)}id.h
-VM_CORE_H_INCLUDES = {$(VPATH)}vm_core.h {$(VPATH)}vm_opts.h \
-	             {$(VPATH)}thread_$(THREAD_MODEL).h \
-		     {$(VPATH)}node.h $(ID_H_INCLUDES)
-
-array.$(OBJEXT): {$(VPATH)}array.c $(RUBY_H_INCLUDES) {$(VPATH)}util.h
-bignum.$(OBJEXT): {$(VPATH)}bignum.c $(RUBY_H_INCLUDES)
-class.$(OBJEXT): {$(VPATH)}class.c $(RUBY_H_INCLUDES) {$(VPATH)}node.h
-compar.$(OBJEXT): {$(VPATH)}compar.c $(RUBY_H_INCLUDES)
-complex.$(OBJEXT): {$(VPATH)}complex.c $(RUBY_H_INCLUDES)
-dir.$(OBJEXT): {$(VPATH)}dir.c $(RUBY_H_INCLUDES) {$(VPATH)}util.h \
-  $(ENCODING_H_INCLUDES)
-dln.$(OBJEXT): {$(VPATH)}dln.c {$(VPATH)}dln.h $(RUBY_H_INCLUDES)
-dmydln.$(OBJEXT): {$(VPATH)}dmydln.c dln.$(OBJEXT)
-dmyext.$(OBJEXT): {$(VPATH)}dmyext.c
-dmyencoding.$(OBJEXT): {$(VPATH)}dmyencoding.c $(RUBY_H_INCLUDES) \
-  {$(VPATH)}regenc.h {$(VPATH)}util.h $(ENCODING_H_INCLUDES) \
-  {$(VPATH)}encoding.c
-encoding.$(OBJEXT): {$(VPATH)}encoding.c $(RUBY_H_INCLUDES) \
-  $(ENCODING_H_INCLUDES) {$(VPATH)}regenc.h {$(VPATH)}util.h
-enum.$(OBJEXT): {$(VPATH)}enum.c $(RUBY_H_INCLUDES) {$(VPATH)}node.h \
-  {$(VPATH)}util.h
-enumerator.$(OBJEXT): {$(VPATH)}enumerator.c $(RUBY_H_INCLUDES)
-error.$(OBJEXT): {$(VPATH)}error.c {$(VPATH)}known_errors.inc $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-eval.$(OBJEXT): {$(VPATH)}eval.c {$(VPATH)}eval_intern.h \
-  $(RUBY_H_INCLUDES) $(VM_CORE_H_INCLUDES) {$(VPATH)}eval_error.c \
-  {$(VPATH)}eval_jump.c {$(VPATH)}debug.h {$(VPATH)}gc.h \
-  {$(VPATH)}iseq.h
-load.$(OBJEXT): {$(VPATH)}load.c {$(VPATH)}eval_intern.h \
-  {$(VPATH)}util.h $(RUBY_H_INCLUDES) $(VM_CORE_H_INCLUDES) \
-  {$(VPATH)}dln.h {$(VPATH)}debug.h
-file.$(OBJEXT): {$(VPATH)}file.c $(RUBY_H_INCLUDES) {$(VPATH)}io.h \
-  $(ENCODING_H_INCLUDES) {$(VPATH)}util.h {$(VPATH)}dln.h
-gc.$(OBJEXT): {$(VPATH)}gc.c $(RUBY_H_INCLUDES) {$(VPATH)}re.h \
-  {$(VPATH)}regex.h $(ENCODING_H_INCLUDES) $(VM_CORE_H_INCLUDES) \
-  {$(VPATH)}gc.h {$(VPATH)}io.h {$(VPATH)}eval_intern.h {$(VPATH)}util.h \
-  {$(VPATH)}debug.h
-hash.$(OBJEXT): {$(VPATH)}hash.c $(RUBY_H_INCLUDES) {$(VPATH)}util.h
-inits.$(OBJEXT): {$(VPATH)}inits.c $(RUBY_H_INCLUDES)
-io.$(OBJEXT): {$(VPATH)}io.c $(RUBY_H_INCLUDES) {$(VPATH)}io.h \
-  {$(VPATH)}util.h $(ENCODING_H_INCLUDES)
-main.$(OBJEXT): {$(VPATH)}main.c $(RUBY_H_INCLUDES) {$(VPATH)}debug.h \
-  {$(VPATH)}node.h
-marshal.$(OBJEXT): {$(VPATH)}marshal.c $(RUBY_H_INCLUDES) {$(VPATH)}io.h \
-  $(ENCODING_H_INCLUDES) {$(VPATH)}util.h
-math.$(OBJEXT): {$(VPATH)}math.c $(RUBY_H_INCLUDES)
-numeric.$(OBJEXT): {$(VPATH)}numeric.c $(RUBY_H_INCLUDES) \
-  $(ENCODING_H_INCLUDES)
-object.$(OBJEXT): {$(VPATH)}object.c $(RUBY_H_INCLUDES) {$(VPATH)}util.h
-pack.$(OBJEXT): {$(VPATH)}pack.c $(RUBY_H_INCLUDES)
-parse.$(OBJEXT): {$(VPATH)}parse.c $(RUBY_H_INCLUDES) \
-  {$(VPATH)}node.h $(ENCODING_H_INCLUDES) $(ID_H_INCLUDES) \
-  {$(VPATH)}regenc.h {$(VPATH)}regex.h {$(VPATH)}util.h {$(VPATH)}lex.c \
-  {$(VPATH)}defs/keywords {$(VPATH)}id.c
-proc.$(OBJEXT): {$(VPATH)}proc.c {$(VPATH)}eval_intern.h \
-  $(RUBY_H_INCLUDES) {$(VPATH)}gc.h $(VM_CORE_H_INCLUDES) \
-  {$(VPATH)}debug.h
-process.$(OBJEXT): {$(VPATH)}process.c $(RUBY_H_INCLUDES) \
-  {$(VPATH)}util.h {$(VPATH)}io.h $(ENCODING_H_INCLUDES) {$(VPATH)}dln.h \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-random.$(OBJEXT): {$(VPATH)}random.c $(RUBY_H_INCLUDES)
-range.$(OBJEXT): {$(VPATH)}range.c $(RUBY_H_INCLUDES) \
-  $(ENCODING_H_INCLUDES)
-rational.$(OBJEXT): {$(VPATH)}rational.c $(RUBY_H_INCLUDES)
-re.$(OBJEXT): {$(VPATH)}re.c $(RUBY_H_INCLUDES) {$(VPATH)}re.h \
-  {$(VPATH)}regex.h $(ENCODING_H_INCLUDES) {$(VPATH)}util.h \
-  {$(VPATH)}regint.h {$(VPATH)}regenc.h
-regcomp.$(OBJEXT): {$(VPATH)}regcomp.c {$(VPATH)}regparse.h \
-  {$(VPATH)}regint.h {$(VPATH)}regenc.h {$(VPATH)}oniguruma.h \
-  $(RUBY_H_INCLUDES)
-regenc.$(OBJEXT): {$(VPATH)}regenc.c {$(VPATH)}regint.h \
-  {$(VPATH)}regenc.h {$(VPATH)}oniguruma.h $(RUBY_H_INCLUDES)
-regerror.$(OBJEXT): {$(VPATH)}regerror.c {$(VPATH)}regint.h \
-  {$(VPATH)}regenc.h {$(VPATH)}oniguruma.h $(RUBY_H_INCLUDES)
-regexec.$(OBJEXT): {$(VPATH)}regexec.c {$(VPATH)}regint.h \
-  {$(VPATH)}regenc.h {$(VPATH)}oniguruma.h $(RUBY_H_INCLUDES)
-regparse.$(OBJEXT): {$(VPATH)}regparse.c {$(VPATH)}regparse.h \
-  {$(VPATH)}regint.h {$(VPATH)}regenc.h {$(VPATH)}oniguruma.h \
-  $(RUBY_H_INCLUDES)
-regsyntax.$(OBJEXT): {$(VPATH)}regsyntax.c {$(VPATH)}regint.h \
-  {$(VPATH)}regenc.h {$(VPATH)}oniguruma.h $(RUBY_H_INCLUDES)
-ruby.$(OBJEXT): {$(VPATH)}ruby.c $(RUBY_H_INCLUDES) {$(VPATH)}util.h \
-  $(ENCODING_H_INCLUDES) {$(VPATH)}eval_intern.h $(VM_CORE_H_INCLUDES) \
-  {$(VPATH)}dln.h {$(VPATH)}debug.h
-safe.$(OBJEXT): {$(VPATH)}safe.c $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-signal.$(OBJEXT): {$(VPATH)}signal.c $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-sprintf.$(OBJEXT): {$(VPATH)}sprintf.c $(RUBY_H_INCLUDES) {$(VPATH)}re.h \
-  {$(VPATH)}regex.h {$(VPATH)}vsnprintf.c $(ENCODING_H_INCLUDES)
-st.$(OBJEXT): {$(VPATH)}st.c {$(VPATH)}config.h {$(VPATH)}defines.h \
-  {$(VPATH)}st.h {$(VPATH)}ruby.h {$(VPATH)}missing.h {$(VPATH)}intern.h
-strftime.$(OBJEXT): {$(VPATH)}strftime.c {$(VPATH)}ruby.h \
-  {$(VPATH)}config.h {$(VPATH)}defines.h {$(VPATH)}missing.h \
-  {$(VPATH)}intern.h {$(VPATH)}st.h
-string.$(OBJEXT): {$(VPATH)}string.c $(RUBY_H_INCLUDES) {$(VPATH)}re.h \
-  {$(VPATH)}regex.h $(ENCODING_H_INCLUDES)
-struct.$(OBJEXT): {$(VPATH)}struct.c $(RUBY_H_INCLUDES)
-thread.$(OBJEXT): {$(VPATH)}thread.c {$(VPATH)}eval_intern.h \
-  $(RUBY_H_INCLUDES) {$(VPATH)}gc.h $(VM_CORE_H_INCLUDES) \
-  {$(VPATH)}debug.h {$(VPATH)}thread_$(THREAD_MODEL).c
-transcode.$(OBJEXT): {$(VPATH)}transcode.c $(RUBY_H_INCLUDES) \
-  $(ENCODING_H_INCLUDES) {$(VPATH)}transcode_data.h
-cont.$(OBJEXT): {$(VPATH)}cont.c $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}gc.h {$(VPATH)}eval_intern.h \
-  {$(VPATH)}debug.h
-time.$(OBJEXT): {$(VPATH)}time.c $(RUBY_H_INCLUDES) \
-  $(ENCODING_H_INCLUDES)
-util.$(OBJEXT): {$(VPATH)}util.c $(RUBY_H_INCLUDES) {$(VPATH)}util.h
-variable.$(OBJEXT): {$(VPATH)}variable.c $(RUBY_H_INCLUDES) \
-  {$(VPATH)}node.h {$(VPATH)}util.h
-version.$(OBJEXT): {$(VPATH)}version.c $(RUBY_H_INCLUDES) \
-  {$(VPATH)}version.h $(srcdir)/revision.h
-
-compile.$(OBJEXT): {$(VPATH)}compile.c {$(VPATH)}iseq.h \
-  $(RUBY_H_INCLUDES) $(VM_CORE_H_INCLUDES) {$(VPATH)}insns.inc \
-  {$(VPATH)}insns_info.inc {$(VPATH)}optinsn.inc {$(VPATH)}debug.h
-iseq.$(OBJEXT): {$(VPATH)}iseq.c {$(VPATH)}gc.h {$(VPATH)}iseq.h \
-  $(RUBY_H_INCLUDES) $(VM_CORE_H_INCLUDES) {$(VPATH)}insns.inc \
-  {$(VPATH)}insns_info.inc {$(VPATH)}node_name.inc {$(VPATH)}debug.h
-vm.$(OBJEXT): {$(VPATH)}vm.c {$(VPATH)}gc.h {$(VPATH)}iseq.h \
-  {$(VPATH)}eval_intern.h $(RUBY_H_INCLUDES) $(ENCODING_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}vm_method.c {$(VPATH)}vm_eval.c \
-  {$(VPATH)}vm_insnhelper.c {$(VPATH)}vm_insnhelper.h {$(VPATH)}vm_exec.c \
-  {$(VPATH)}vm_exec.h {$(VPATH)}insns.def {$(VPATH)}vmtc.inc \
-  {$(VPATH)}vm.inc {$(VPATH)}insns.inc {$(VPATH)}debug.h
-vm_dump.$(OBJEXT): {$(VPATH)}vm_dump.c $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-debug.$(OBJEXT): {$(VPATH)}debug.c $(RUBY_H_INCLUDES) \
-  $(ENCODING_H_INCLUDES) $(VM_CORE_H_INCLUDES) {$(VPATH)}eval_intern.h \
-  {$(VPATH)}util.h {$(VPATH)}debug.h
-id.$(OBJEXT): {$(VPATH)}id.c $(RUBY_H_INCLUDES) $(ID_H_INCLUDES)
-miniprelude.$(OBJEXT): {$(VPATH)}miniprelude.c $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-prelude.$(OBJEXT): {$(VPATH)}prelude.c $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-golf_prelude.$(OBJEXT): {$(VPATH)}golf_prelude.c $(RUBY_H_INCLUDES) \
-  $(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
-goruby.$(OBJEXT): {$(VPATH)}goruby.c {$(VPATH)}main.c $(RUBY_H_INCLUDES) \
-  {$(VPATH)}debug.h {$(VPATH)}node.h
-
-ascii.$(OBJEXT): {$(VPATH)}ascii.c {$(VPATH)}regenc.h {$(VPATH)}config.h \
-  {$(VPATH)}defines.h {$(VPATH)}oniguruma.h
-us_ascii.$(OBJEXT): {$(VPATH)}us_ascii.c {$(VPATH)}regenc.h \
-  {$(VPATH)}config.h {$(VPATH)}defines.h {$(VPATH)}oniguruma.h
-unicode.$(OBJEXT): {$(VPATH)}unicode.c {$(VPATH)}regint.h \
-  {$(VPATH)}config.h {$(VPATH)}defines.h {$(VPATH)}regenc.h \
-  {$(VPATH)}oniguruma.h {$(VPATH)}st.h {$(VPATH)}ruby.h \
-  {$(VPATH)}missing.h {$(VPATH)}intern.h
-utf_8.$(OBJEXT): {$(VPATH)}utf_8.c {$(VPATH)}regenc.h {$(VPATH)}config.h \
-  {$(VPATH)}defines.h {$(VPATH)}oniguruma.h
-
-newline.c: $(srcdir)/enc/trans/newline.trans $(srcdir)/tool/transcode-tblgen.rb
-newline.$(OBJEXT): {$(VPATH)}newline.c {$(VPATH)}defines.h \
-  {$(VPATH)}intern.h {$(VPATH)}missing.h {$(VPATH)}st.h \
-  {$(VPATH)}transcode_data.h {$(VPATH)}ruby.h {$(VPATH)}config.h
-
-INSNS2VMOPT = --srcdir="$(srcdir)"
+# dependencies for generated C sources.
+parse.$(OBJEXT): {$(VPATH)}parse.c
+miniprelude.$(OBJEXT): {$(VPATH)}miniprelude.c
 
-$(INSNS): $(srcdir)/insns.def {$(VPATH)}vm_opts.h $(srcdir)/defs/opt_operand.def $(srcdir)/defs/opt_insn_unif.def
+# dependencies for optional sources.
+compile.$(OBJEXT): {$(VPATH)}opt_sc.inc {$(VPATH)}optunifs.inc
 
-minsns.inc: $(srcdir)/template/minsns.inc.tmpl
+win32/win32.$(OBJEXT): {$(VPATH)}win32/win32.c {$(VPATH)}win32/file.h \
+  {$(VPATH)}dln.h {$(VPATH)}dln_find.c {$(VPATH)}encindex.h \
+  {$(VPATH)}internal.h {$(VPATH)}util.h $(RUBY_H_INCLUDES) \
+  {$(VPATH)}vm.h $(PLATFORM_D)
+win32/file.$(OBJEXT): {$(VPATH)}win32/file.c {$(VPATH)}win32/file.h \
+  $(RUBY_H_INCLUDES) $(PLATFORM_D)
 
-opt_sc.inc: $(srcdir)/template/opt_sc.inc.tmpl
+$(NEWLINE_C): $(srcdir)/enc/trans/newline.trans $(tooldir)/transcode-tblgen.rb
+	$(Q) $(MAKEDIRS) $(@D)
+	$(Q) $(BASERUBY) "$(tooldir)/transcode-tblgen.rb" -vo $@ $(srcdir)/enc/trans/newline.trans
+enc/trans/newline.$(OBJEXT): $(NEWLINE_C)
 
-optinsn.inc: $(srcdir)/template/optinsn.inc.tmpl
+verconf.h: $(srcdir)/template/verconf.h.tmpl $(tooldir)/generic_erb.rb
+	$(ECHO) creating $@
+	$(Q) $(BOOTSTRAPRUBY) "$(tooldir)/generic_erb.rb" -o $@ $(srcdir)/template/verconf.h.tmpl
 
-optunifs.inc: $(srcdir)/template/optunifs.inc.tmpl
+ruby-glommed.$(OBJEXT): $(OBJS)
 
-insns.inc: $(srcdir)/template/insns.inc.tmpl
+$(OBJS):  {$(VPATH)}config.h {$(VPATH)}missing.h
 
-insns_info.inc: $(srcdir)/template/insns_info.inc.tmpl
-
-vmtc.inc: $(srcdir)/template/vmtc.inc.tmpl
-
-vm.inc: $(srcdir)/template/vm.inc.tmpl
+INSNS2VMOPT = --srcdir="$(srcdir)"
 
-srcs: {$(VPATH)}parse.c {$(VPATH)}lex.c {$(VPATH)}newline.c $(srcdir)/ext/ripper/ripper.c srcs-enc
+srcs_vpath = {$(VPATH)}
+
+inc_common_headers = $(tooldir)/ruby_vm/views/_copyright.erb $(tooldir)/ruby_vm/views/_notice.erb
+$(srcs_vpath)opt_sc.inc: $(tooldir)/ruby_vm/views/opt_sc.inc.erb $(inc_common_headers)
+$(srcs_vpath)optinsn.inc: $(tooldir)/ruby_vm/views/optinsn.inc.erb $(inc_common_headers)
+$(srcs_vpath)optunifs.inc: $(tooldir)/ruby_vm/views/optunifs.inc.erb $(inc_common_headers)
+$(srcs_vpath)insns.inc: $(tooldir)/ruby_vm/views/insns.inc.erb $(inc_common_headers)
+$(srcs_vpath)insns_info.inc: $(tooldir)/ruby_vm/views/insns_info.inc.erb $(inc_common_headers) \
+  $(tooldir)/ruby_vm/views/_insn_type_chars.erb $(tooldir)/ruby_vm/views/_insn_name_info.erb \
+  $(tooldir)/ruby_vm/views/_insn_len_info.erb $(tooldir)/ruby_vm/views/_insn_operand_info.erb \
+  $(tooldir)/ruby_vm/views/_attributes.erb $(tooldir)/ruby_vm/views/_comptime_insn_stack_increase.erb \
+  $(tooldir)/ruby_vm/views/_insn_sp_pc_dependency.erb
+$(srcs_vpath)vmtc.inc: $(tooldir)/ruby_vm/views/vmtc.inc.erb $(inc_common_headers)
+$(srcs_vpath)vm.inc: $(tooldir)/ruby_vm/views/vm.inc.erb $(inc_common_headers) \
+  $(tooldir)/ruby_vm/views/_insn_entry.erb $(tooldir)/ruby_vm/views/_trace_instruction.erb
+$(srcs_vpath)mjit_compile.inc: $(tooldir)/ruby_vm/views/mjit_compile.inc.erb $(inc_common_headers) \
+  $(tooldir)/ruby_vm/views/_mjit_compile_insn.erb $(tooldir)/ruby_vm/views/_mjit_compile_send.erb \
+  $(tooldir)/ruby_vm/views/_mjit_compile_ivar.erb \
+  $(tooldir)/ruby_vm/views/_mjit_compile_insn_body.erb $(tooldir)/ruby_vm/views/_mjit_compile_pc_and_sp.erb \
+  $(tooldir)/ruby_vm/views/_mjit_compile_invokebuiltin.erb
+
+BUILTIN_RB_SRCS = \
+		$(srcdir)/ast.rb \
+		$(srcdir)/dir.rb \
+		$(srcdir)/gc.rb \
+		$(srcdir)/integer.rb \
+		$(srcdir)/io.rb \
+		$(srcdir)/pack.rb \
+		$(srcdir)/trace_point.rb \
+		$(srcdir)/warning.rb \
+		$(srcdir)/array.rb \
+		$(srcdir)/kernel.rb \
+		$(srcdir)/ractor.rb \
+		$(srcdir)/prelude.rb \
+		$(srcdir)/gem_prelude.rb \
+		$(empty)
+BUILTIN_RB_INCS = $(BUILTIN_RB_SRCS:.rb=.rbinc)
+
+common-srcs: $(srcs_vpath)parse.c $(srcs_vpath)lex.c $(srcs_vpath)enc/trans/newline.c $(srcs_vpath)id.c \
+	     $(BUILTIN_RB_INCS) \
+	     srcs-lib srcs-ext incs
+
+missing-srcs: $(srcdir)/missing/des_tables.c
+
+srcs: common-srcs missing-srcs srcs-enc
+
+EXT_SRCS = $(srcdir)/ext/ripper/ripper.c \
+	   $(srcdir)/ext/rbconfig/sizeof/sizes.c \
+	   $(srcdir)/ext/rbconfig/sizeof/limits.c \
+	   $(srcdir)/ext/socket/constdefs.c \
+	   $(srcdir)/ext/etc/constdefs.h \
+	   # EXT_SRCS
+
+srcs-ext: $(EXT_SRCS)
+realclean-srcs-ext::
+	$(Q)$(RM) $(EXT_SRCS)
+
+EXTRA_SRCS = $(srcdir)/ext/json/parser/parser.c \
+	     $(srcdir)/ext/date/zonetab.h \
+	     $(empty)
+
+srcs-extra: $(EXTRA_SRCS)
+realclean-srcs-extra::
+	$(Q)$(RM) $(EXTRA_SRCS)
+
+LIB_SRCS = $(srcdir)/lib/unicode_normalize/tables.rb
+
+srcs-lib: $(LIB_SRCS)
 
 srcs-enc: $(ENC_MK)
-	$(MAKE) -f $(ENC_MK) RUBY="$(MINIRUBY)" MINIRUBY="$(MINIRUBY)" $(MFLAGS) srcs
+	$(ECHO) making srcs under enc
+	$(Q) $(MAKE) $(MAKE_ENC) srcs
 
-incs: $(INSNS) {$(VPATH)}node_name.inc {$(VPATH)}encdb.h {$(VPATH)}transdb.h {$(VPATH)}known_errors.inc $(srcdir)/revision.h
+all-incs: incs {$(VPATH)}encdb.h {$(VPATH)}transdb.h
+incs: $(INSNS) {$(VPATH)}node_name.inc {$(VPATH)}known_errors.inc \
+      {$(VPATH)}vm_call_iseq_optimized.inc $(srcdir)/revision.h \
+      $(REVISION_H) \
+      $(UNICODE_DATA_HEADERS) $(srcdir)/enc/jis/props.h \
+      {$(VPATH)}id.h {$(VPATH)}probes.dmyh
 
 insns: $(INSNS)
 
-node_name.inc: {$(VPATH)}node.h
+id.h: $(tooldir)/generic_erb.rb $(srcdir)/template/id.h.tmpl $(srcdir)/defs/id.def
+	$(ECHO) generating $@
+	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb --output=$@ \
+		$(srcdir)/template/id.h.tmpl
 
-encdb.h: $(PREP) $(srcdir)/tool/generic_erb.rb $(srcdir)/template/encdb.h.tmpl
-	$(MINIRUBY) $(srcdir)/tool/generic_erb.rb -c -o $@ $(srcdir)/template/encdb.h.tmpl $(srcdir)/enc enc
+id.c: $(tooldir)/generic_erb.rb $(srcdir)/template/id.c.tmpl $(srcdir)/defs/id.def
+	$(ECHO) generating $@
+	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb --output=$@ \
+		$(srcdir)/template/id.c.tmpl
 
-transdb.h: $(PREP) srcs-enc $(srcdir)/tool/generic_erb.rb $(srcdir)/template/transdb.h.tmpl
-	$(MINIRUBY) $(srcdir)/tool/generic_erb.rb -c -o $@ $(srcdir)/template/transdb.h.tmpl $(srcdir)/enc/trans enc/trans
+node_name.inc: $(tooldir)/node_name.rb $(srcdir)/node.h
+	$(ECHO) generating $@
+	$(Q) $(BASERUBY) -n $(tooldir)/node_name.rb < $(srcdir)/node.h > $@
 
-# {$(VPATH)}id.h: {$(VPATH)}parse.h $(srcdir)/tool/generic_erb.rb $(srcdir)/template/id.h.tmpl
-# 	$(BASERUBY) $(srcdir)/tool/generic_erb.rb --if-change --output=$@ \
-# 		$(srcdir)/template/id.h.tmpl --vpath=$(VPATH) parse.h
+encdb.h: $(PREP) $(tooldir)/generic_erb.rb $(srcdir)/template/encdb.h.tmpl
+	$(ECHO) generating $@
+	$(Q) $(MINIRUBY) $(tooldir)/generic_erb.rb -c -o $@ $(srcdir)/template/encdb.h.tmpl $(srcdir)/enc enc
+
+transdb.h: $(PREP) srcs-enc $(tooldir)/generic_erb.rb $(srcdir)/template/transdb.h.tmpl
+	$(ECHO) generating $@
+	$(Q) $(MINIRUBY) $(tooldir)/generic_erb.rb -c -o $@ $(srcdir)/template/transdb.h.tmpl $(srcdir)/enc/trans enc/trans
+
+enc/encinit.c: $(ENC_MK) $(srcdir)/enc/encinit.c.erb
 
 known_errors.inc: $(srcdir)/template/known_errors.inc.tmpl $(srcdir)/defs/known_errors.def
+	$(ECHO) generating $@
+	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb -c -o $@ $(srcdir)/template/known_errors.inc.tmpl $(srcdir)/defs/known_errors.def
+
+vm_call_iseq_optimized.inc: $(srcdir)/template/call_iseq_optimized.inc.tmpl
+	$(ECHO) generating $@
+	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb -c -o $@ $(srcdir)/template/call_iseq_optimized.inc.tmpl
+
+$(MINIPRELUDE_C): $(COMPILE_PRELUDE) $(BUILTIN_RB_SRCS)
+	$(ECHO) generating $@
+	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb -I$(srcdir) -o $@ \
+		$(srcdir)/template/prelude.c.tmpl $(BUILTIN_RB_SRCS)
+
+$(GOLF_PRELUDE_C): $(COMPILE_PRELUDE) {$(srcdir)}golf_prelude.rb
+	$(ECHO) generating $@
+	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb -I$(srcdir) -c -o $@ \
+		$(srcdir)/template/prelude.c.tmpl golf_prelude.rb
+
+MAINCPPFLAGS = $(ENABLE_DEBUG_ENV:yes=-DRUBY_DEBUG_ENV=1)
 
-miniprelude.c: $(srcdir)/tool/compile_prelude.rb $(srcdir)/prelude.rb
+$(MAINOBJ): $(srcdir)/$(MAINSRC)
+	$(ECHO) compiling $(srcdir)/$(MAINSRC)
+	$(Q) $(CC) $(MAINCPPFLAGS) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$(srcdir)/$(MAINSRC)
 
-prelude.c: $(srcdir)/tool/compile_prelude.rb $(RBCONFIG) $(PRELUDE_SCRIPTS) $(PREP)
-	$(COMPILE_PRELUDE) $(PRELUDE_SCRIPTS) $@
+{$(VPATH)}probes.dmyh: {$(srcdir)}probes.d $(tooldir)/gen_dummy_probes.rb
 
-golf_prelude.c: $(srcdir)/tool/compile_prelude.rb $(RBCONFIG) $(srcdir)/prelude.rb $(srcdir)/golf_prelude.rb $(PREP)
-	$(COMPILE_PRELUDE) $(srcdir)/golf_prelude.rb $@
+probes.dmyh:
+	$(BASERUBY) $(tooldir)/gen_dummy_probes.rb $(srcdir)/probes.d > $@
 
-prereq: incs srcs preludes
+probes.h: {$(VPATH)}probes.$(DTRACE_EXT)
+
+prereq: incs srcs preludes PHONY
 
 preludes: {$(VPATH)}miniprelude.c
 preludes: {$(srcdir)}golf_prelude.c
 
-$(srcdir)/revision.h: $(srcdir)/version.h $(srcdir)/ChangeLog $(srcdir)/tool/file2lastrev.rb $(REVISION_FORCE)
-	@-$(BASERUBY) $(srcdir)/tool/file2lastrev.rb --revision.h "$(@D)" > "$@.tmp"
-	@$(IFCHANGE) "$@" "$@.tmp"
-
-$(srcdir)/ext/ripper/ripper.c:
-	cd $(srcdir)/ext/ripper && $(exec) $(MAKE) -f depend $(MFLAGS) top_srcdir=../.. srcdir=.
+{$(srcdir)}.rb.rbinc:
+	$(ECHO) making $@
+	$(Q) $(BASERUBY) $(tooldir)/mk_builtin_loader.rb $<
+
+builtin_binary.inc: $(PREP) $(BUILTIN_RB_SRCS) $(srcdir)/template/builtin_binary.inc.tmpl
+	$(Q) $(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ \
+		$(srcdir)/template/builtin_binary.inc.tmpl -- --cross=$(CROSS_COMPILING)
+
+$(BUILTIN_RB_INCS): $(top_srcdir)/tool/mk_builtin_loader.rb
+
+$(srcdir)/revision.h:
+	$(Q)$(gnumake:yes=#) $(RM) $(@F)
+	$(Q)$(gnumake:yes=#) $(NULLCMD) > $@ || $(NULLCMD) > $(@F)
+
+revision.tmp::
+	$(Q) $(NULLCMD) > $@
+revision.$(HAVE_BASERUBY:yes=tmp):: $(srcdir)/version.h $(tooldir)/file2lastrev.rb $(REVISION_FORCE)
+	$(Q) $(BASERUBY) $(tooldir)/file2lastrev.rb -q --revision.h --srcdir="$(srcdir)" > $@
+
+$(REVISION_H): revision.tmp
+	$(Q)$(IFCHANGE) "--timestamp=$@" "$(srcdir)/revision.h" revision.tmp
+
+$(srcdir)/ext/ripper/ripper.c: $(srcdir)/ext/ripper/tools/preproc.rb $(srcdir)/parse.y id.h $(srcdir)/ext/ripper/depend
+	$(ECHO) generating $@
+	$(Q) VPATH=$${PWD-`pwd`} && $(CHDIR) $(@D) && \
+	sed -e 's/{\$$([^(){}]*)[^{}]*}//g' -e /AUTOGENERATED/q depend | \
+	$(exec) $(MAKE) -f - $(mflags) \
+		Q=$(Q) ECHO=$(ECHO) RM="$(RM)" BISON=$(YACC) top_srcdir=../.. srcdir=. VPATH="$${VPATH}" \
+		RUBY="$(BASERUBY)" PATH_SEPARATOR="$(PATH_SEPARATOR)" LANG=C
+
+$(srcdir)/ext/json/parser/parser.c: $(srcdir)/ext/json/parser/parser.rl $(srcdir)/ext/json/parser/prereq.mk
+	$(ECHO) generating $@
+	$(Q) $(CHDIR) $(@D) && $(exec) $(MAKE) -f prereq.mk $(mflags) \
+		Q=$(Q) ECHO=$(ECHO) top_srcdir=../../.. srcdir=. VPATH=../../.. BASERUBY="$(BASERUBY)"
+
+$(srcdir)/ext/date/zonetab.h: $(srcdir)/ext/date/zonetab.list $(srcdir)/ext/date/prereq.mk
+	$(ECHO) generating $@
+	$(Q) $(CHDIR) $(@D) && $(exec) $(MAKE) -f prereq.mk $(mflags) \
+		Q=$(Q) ECHO=$(ECHO) top_srcdir=../.. srcdir=. VPATH=../.. BASERUBY="$(BASERUBY)"
+
+$(srcdir)/ext/rbconfig/sizeof/sizes.c: $(srcdir)/ext/rbconfig/sizeof/depend \
+		$(tooldir)/generic_erb.rb $(srcdir)/template/sizes.c.tmpl $(srcdir)/configure.ac
+	$(ECHO) generating $@
+	$(Q) $(CHDIR) $(@D) && \
+	sed '/AUTOGENERATED/q' depend | \
+	$(exec) $(MAKE) -f - $(mflags) \
+		Q=$(Q) ECHO=$(ECHO) top_srcdir=../../.. srcdir=. VPATH=../../.. RUBY="$(BASERUBY)" $(@F)
+
+$(srcdir)/ext/rbconfig/sizeof/limits.c: $(srcdir)/ext/rbconfig/sizeof/depend \
+		$(tooldir)/generic_erb.rb $(srcdir)/template/limits.c.tmpl
+	$(ECHO) generating $@
+	$(Q) $(CHDIR) $(@D) && \
+	sed '/AUTOGENERATED/q' depend | \
+	$(exec) $(MAKE) -f - $(mflags) \
+		Q=$(Q) ECHO=$(ECHO) top_srcdir=../../.. srcdir=. VPATH=../../.. RUBY="$(BASERUBY)" $(@F)
+
+$(srcdir)/ext/socket/constdefs.c: $(srcdir)/ext/socket/depend
+	$(Q) $(CHDIR) $(@D) && \
+	sed '/AUTOGENERATED/q' depend | \
+	$(exec) $(MAKE) -f - $(mflags) \
+		Q=$(Q) ECHO=$(ECHO) top_srcdir=../.. srcdir=. VPATH=../.. RUBY="$(BASERUBY)"
+
+$(srcdir)/ext/etc/constdefs.h: $(srcdir)/ext/etc/depend
+	$(Q) $(CHDIR) $(@D) && \
+	sed '/AUTOGENERATED/q' depend | \
+	$(exec) $(MAKE) -f - $(mflags) \
+		Q=$(Q) ECHO=$(ECHO) top_srcdir=../.. srcdir=. VPATH=../.. RUBY="$(BASERUBY)"
 
 ##
 
-run: miniruby$(EXEEXT) PHONY
-	$(MINIRUBY) $(TESTRUN_SCRIPT) $(RUNOPT)
+run: fake miniruby$(EXEEXT) PHONY
+	$(BTESTRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
 
 runruby: $(PROGRAM) PHONY
-	$(RUNRUBY) $(TESTRUN_SCRIPT)
-
-parse: miniruby$(EXEEXT) PHONY
-	$(MINIRUBY) $(srcdir)/tool/parse.rb $(TESTRUN_SCRIPT)
+	$(RUNRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
 
-COMPARE_RUBY = $(BASERUBY)
-ITEM = 
-OPTS = 
+parse: fake miniruby$(EXEEXT) PHONY
+	$(BTESTRUBY) --dump=parsetree_with_comment,insns $(TESTRUN_SCRIPT)
 
-benchmark: $(PROGRAM) PHONY
-	$(BASERUBY) $(srcdir)/benchmark/driver.rb -v \
-	            --executables="$(COMPARE_RUBY); $(RUNRUBY)" \
-	            --pattern='bm_' --directory=$(srcdir)/benchmark $(OPTS)
+bisect: PHONY
+	$(tooldir)/bisect.sh miniruby $(srcdir)
 
-benchmark-each: $(PROGRAM) PHONY
-	$(BASERUBY) $(srcdir)/benchmark/driver.rb -v \
-	            --executables="$(COMPARE_RUBY); $(RUNRUBY)" \
-	            --pattern=$(ITEM) --directory=$(srcdir)/benchmark $(OPTS)
+bisect-ruby: PHONY
+	$(tooldir)/bisect.sh ruby $(srcdir)
 
-tbench: $(PROGRAM) PHONY
-	$(BASERUBY) $(srcdir)/benchmark/driver.rb -v \
-	            --executables="$(COMPARE_RUBY); $(RUNRUBY)" \
-	            --pattern='bmx_' --directory=$(srcdir)/benchmark $(OPTS)
+COMPARE_RUBY = $(BASERUBY)
+BENCH_RUBY = $(RUNRUBY)
+BENCH_OPTS = --output=markdown --output-compare
+ITEM =
+ARGS = $$(find $(srcdir)/benchmark -maxdepth 1 -name '$(ITEM)' -o -name '*$(ITEM)*.yml' -o -name '*$(ITEM)*.rb' | sort)
+OPTS =
+
+# See benchmark/README.md for details.
+benchmark: miniruby$(EXEEXT) update-benchmark-driver PHONY
+	$(BASERUBY) -rrubygems -I$(srcdir)/benchmark/lib $(srcdir)/benchmark/benchmark-driver/exe/benchmark-driver \
+	            --executables="compare-ruby::$(COMPARE_RUBY) -I$(EXTOUT)/common --disable-gem" \
+	            --executables="built-ruby::$(BENCH_RUBY) --disable-gem" \
+	            $(BENCH_OPTS) $(ARGS) $(OPTS)
 
 run.gdb:
-	echo b ruby_debug_breakpoint           > run.gdb
+	echo set breakpoint pending on         > run.gdb
+	echo b rb_assert_failure              >> run.gdb
+	echo b rb_bug                         >> run.gdb
+	echo b ruby_debug_breakpoint          >> run.gdb
 	echo '# handle SIGINT nostop'         >> run.gdb
 	echo '# handle SIGPIPE nostop'        >> run.gdb
 	echo '# b rb_longjmp'                 >> run.gdb
 	echo source $(srcdir)/breakpoints.gdb >> run.gdb
 	echo source $(srcdir)/.gdbinit        >> run.gdb
+	echo 'set $$_exitcode = -999'         >> run.gdb
 	echo run                              >> run.gdb
+	echo 'if $$_exitcode != -999'         >> run.gdb
+	echo '  quit'                         >> run.gdb
+	echo end                              >> run.gdb
+
 
 gdb: miniruby$(EXEEXT) run.gdb PHONY
-	gdb -x run.gdb --quiet --args $(MINIRUBY) $(TESTRUN_SCRIPT)
+	gdb -x run.gdb --quiet --args $(MINIRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
 
 gdb-ruby: $(PROGRAM) run.gdb PHONY
-	gdb -x run.gdb --quiet --args $(PROGRAM) $(TESTRUN_SCRIPT)
+	$(Q) $(RUNRUBY_COMMAND) $(RUNRUBY_DEBUGGER) -- $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
 
+LLDB_INIT = command script import -r $(srcdir)/misc/lldb_cruby.py
+
+lldb: miniruby$(EXEEXT) PHONY
+	lldb -o '$(LLDB_INIT)' miniruby$(EXEEXT) -- $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
+
+lldb-ruby: $(PROGRAM) PHONY
+	lldb $(enable_shared:yes=-o 'target modules add ${LIBRUBY_SO}') -o '$(LLDB_INIT)' $(PROGRAM) -- $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
+
+DISTPKGS = gzip,zip,all
+PKGSDIR = tmp
 dist:
-	$(BASERUBY) $(srcdir)/tool/make-snapshot tmp $(RELNAME)
+	$(BASERUBY) $(tooldir)/make-snapshot \
+	-srcdir=$(srcdir) -packages=$(DISTPKGS) \
+	-unicode-version=$(UNICODE_VERSION) \
+	$(DISTOPTS) $(PKGSDIR) $(RELNAME)
+
+up:: update-remote
 
 up::
-	-@$(MAKE) $(MFLAGS) REVISION_FORCE=PHONY "$(srcdir)/revision.h"
+	-$(Q)$(MAKE) $(mflags) Q=$(Q) REVISION_FORCE=PHONY after-update
+
+yes::
+no::
+
+after-update:: $(REVISION_H)
+after-update:: extract-extlibs
+after-update:: extract-gems
+
+update-remote:: update-src update-download
+update-download:: $(ALWAYS_UPDATE_UNICODE:yes=update-unicode)
+update-download:: update-gems
+update-download:: download-extlibs
+
+update-mspec:
+update-rubyspec:
+
+update-config_files: PHONY
+	$(Q) $(BASERUBY) -C "$(srcdir)" tool/downloader.rb -d tool --cache-dir=$(CACHE_DIR) -e gnu \
+	    config.guess config.sub
+
+refresh-gems: update-bundled_gems prepare-gems
+prepare-gems: $(HAVE_BASERUBY:yes=update-gems) $(HAVE_BASERUBY:yes=extract-gems)
+
+update-gems$(gnumake:yes=-nongnumake): PHONY
+	$(ECHO) Downloading bundled gem files...
+	$(Q) $(BASERUBY) -C "$(srcdir)" \
+	    -I./tool -rdownloader -answ \
+	    -e 'gem, ver = *$$F' \
+	    -e 'next if !ver or /^#/=~gem' \
+	    -e 'old = Dir.glob("gems/#{gem}-*.gem")' \
+	    -e 'gem = "#{gem}-#{ver}.gem"' \
+	    -e 'Downloader::RubyGems.download(gem, "gems", nil) and' \
+	    -e '(old.delete("gems/#{gem}"); !old.empty?) and' \
+	    -e 'File.unlink(*old) and' \
+	    -e 'FileUtils.rm_rf(old.map{'"|n|"'n.chomp(".gem")})' \
+	    gems/bundled_gems
+
+extract-gems$(gnumake:yes=-nongnumake): PHONY
+	$(ECHO) Extracting bundled gem files...
+	$(Q) $(RUNRUBY) -C "$(srcdir)" \
+	    -Itool -rgem-unpack -answ \
+	    -e 'BEGIN {FileUtils.mkdir_p(d = ".bundle/gems")}' \
+	    -e 'gem, ver = *$$F' \
+	    -e 'next if !ver or /^#/=~gem' \
+	    -e 'g = "#{gem}-#{ver}"' \
+	    -e 'File.directory?("#{d}/#{g}") or Gem.unpack("gems/#{g}.gem", d)' \
+	    gems/bundled_gems
+
+update-bundled_gems: PHONY
+	$(Q) $(RUNRUBY) -rrubygems \
+	     $(tooldir)/update-bundled_gems.rb \
+	     "$(srcdir)/gems/bundled_gems" | \
+	"$(IFCHANGE)" "$(srcdir)/gems/bundled_gems" -
+
+test-bundled-gems-precheck: $(TEST_RUNNABLE)-test-bundled-gems-precheck
+yes-test-bundled-gems-precheck: main
+no-test-bundled-gems-precheck:
+
+test-bundled-gems-fetch: $(PREP)
+	$(Q) $(BASERUBY) -C $(srcdir)/gems ../tool/fetch-bundled_gems.rb src bundled_gems
+
+test-bundled-gems-prepare: test-bundled-gems-precheck test-bundled-gems-fetch
+test-bundled-gems-prepare: $(TEST_RUNNABLE)-test-bundled-gems-prepare
+no-test-bundled-gems-prepare: no-test-bundled-gems-precheck
+yes-test-bundled-gems-prepare: yes-test-bundled-gems-precheck
+	$(XRUBY) -C "$(srcdir)" bin/gem install --no-document \
+		--install-dir .bundle --conservative "bundler" "minitest:~> 5" "test-unit" "rake" "hoe" "yard" "pry" "packnga" "rexml" "json-schema" "rbs:~> 1.6.2"
+
+PREPARE_BUNDLED_GEMS = test-bundled-gems-prepare
+test-bundled-gems: $(TEST_RUNNABLE)-test-bundled-gems
+yes-test-bundled-gems: test-bundled-gems-run
+no-test-bundled-gems:
+
+# Override this to allow failure of specific gems on CI
+# TEST_BUNDLED_GEMS_ALLOW_FAILURES =
+
+BUNDLED_GEMS =
+test-bundled-gems-run: $(PREPARE_BUNDLED_GEMS)
+	$(Q) $(XRUBY) $(tooldir)/test-bundled-gems.rb $(BUNDLED_GEMS)
+
+test-bundler-precheck: $(TEST_RUNNABLE)-test-bundler-precheck
+no-test-bundler-precheck:
+yes-test-bundler-precheck: main
+
+no-test-bundler-prepare: no-test-bundler-precheck
+yes-test-bundler-prepare: yes-test-bundler-precheck
+	$(XRUBY) -C "$(srcdir)" bin/gem install --no-document \
+		--install-dir .bundle --conservative "rspec:~> 3.8" "rake:~> 13.0" "parallel_tests:~> 2.29"
+
+RSPECOPTS =
+BUNDLER_SPECS =
+test-bundler: $(TEST_RUNNABLE)-test-bundler
+yes-test-bundler: yes-test-bundler-prepare
+	$(XRUBY) -C $(srcdir) -Ispec/bundler .bundle/bin/rspec \
+		--require spec_helper $(RSPECOPTS) spec/bundler/$(BUNDLER_SPECS)
+no-test-bundler:
+
+PARALLELRSPECOPTS = --runtime-log $(srcdir)/tmp/parallel_runtime_rspec.log
+test-bundler-parallel: $(TEST_RUNNABLE)-test-bundler-parallel
+yes-test-bundler-parallel: yes-test-bundler-prepare
+	$(XRUBY) -I$(srcdir)/spec/bundler \
+		-e "ENV['PARALLEL_TESTS_EXECUTABLE'] = ARGV.shift" \
+		-e "load ARGV.shift" \
+		"$(XRUBY) -C $(srcdir) -Ispec/bundler .bundle/bin/rspec" \
+		$(srcdir)/.bundle/bin/parallel_rspec \
+		-o "--require spec_helper" \
+		$(PARALLELRSPECOPTS) $(srcdir)/spec/bundler/$(BUNDLER_SPECS)
+no-test-bundler-parallel:
+
+GEM = up
+sync-default-gems:
+	$(Q) $(XRUBY) -C "$(srcdir)" tool/sync_default_gems.rb $(GEM)
+
+UNICODE_FILES = $(UNICODE_SRC_DATA_DIR)/UnicodeData.txt \
+		$(UNICODE_SRC_DATA_DIR)/CompositionExclusions.txt \
+		$(UNICODE_SRC_DATA_DIR)/NormalizationTest.txt \
+		$(UNICODE_SRC_DATA_DIR)/CaseFolding.txt \
+		$(UNICODE_SRC_DATA_DIR)/SpecialCasing.txt \
+		$(empty)
+
+UNICODE_PROPERTY_FILES =  \
+		$(UNICODE_SRC_DATA_DIR)/Blocks.txt \
+		$(UNICODE_SRC_DATA_DIR)/DerivedAge.txt \
+		$(UNICODE_SRC_DATA_DIR)/DerivedCoreProperties.txt \
+		$(UNICODE_SRC_DATA_DIR)/PropList.txt \
+		$(UNICODE_SRC_DATA_DIR)/PropertyAliases.txt \
+		$(UNICODE_SRC_DATA_DIR)/PropertyValueAliases.txt \
+		$(UNICODE_SRC_DATA_DIR)/Scripts.txt \
+		$(empty)
+
+UNICODE_AUXILIARY_FILES =  \
+		$(UNICODE_SRC_DATA_DIR)/auxiliary/GraphemeBreakProperty.txt \
+		$(UNICODE_SRC_DATA_DIR)/auxiliary/GraphemeBreakTest.txt \
+		$(empty)
+
+UNICODE_EMOJI_FILES = \
+		$(UNICODE_SRC_EMOJI_DATA_DIR)/emoji-data.txt \
+		$(UNICODE_SRC_EMOJI_DATA_DIR)/emoji-sequences.txt \
+		$(UNICODE_SRC_EMOJI_DATA_DIR)/emoji-test.txt \
+		$(UNICODE_SRC_EMOJI_DATA_DIR)/emoji-variation-sequences.txt \
+		$(UNICODE_SRC_EMOJI_DATA_DIR)/emoji-zwj-sequences.txt \
+		$(empty)
+
+update-unicode: $(UNICODE_FILES) $(UNICODE_PROPERTY_FILES) \
+		$(UNICODE_AUXILIARY_FILES) $(UNICODE_EMOJI_FILES)
+
+CACHE_DIR = $(srcdir)/.downloaded-cache
+UNICODE_DOWNLOAD = \
+	$(BASERUBY) $(tooldir)/downloader.rb \
+	    --cache-dir=$(CACHE_DIR) \
+	    --unicode-beta $(UNICODE_BETA) \
+	    -d $(UNICODE_SRC_DATA_DIR) \
+	    -p $(UNICODE_VERSION)/ucd \
+	    -e $(ALWAYS_UPDATE_UNICODE:yes=-a) unicode
+UNICODE_AUXILIARY_DOWNLOAD = \
+	$(BASERUBY) $(tooldir)/downloader.rb \
+	    --cache-dir=$(CACHE_DIR) \
+	    --unicode-beta $(UNICODE_BETA) \
+	    -d $(UNICODE_SRC_DATA_DIR)/auxiliary \
+	    -p $(UNICODE_VERSION)/ucd/auxiliary \
+	    -e $(ALWAYS_UPDATE_UNICODE:yes=-a) unicode
+UNICODE_EMOJI_DOWNLOAD = \
+	$(BASERUBY) $(tooldir)/downloader.rb \
+	    --cache-dir=$(CACHE_DIR) \
+	    --unicode-beta $(UNICODE_BETA) \
+	    -d $(UNICODE_SRC_EMOJI_DATA_DIR) \
+	    -p emoji/$(UNICODE_EMOJI_VERSION) \
+	    -e $(ALWAYS_UPDATE_UNICODE:yes=-a) unicode
+
+$(UNICODE_FILES) $(UNICODE_PROPERTY_FILES): update-unicode-files
+update-unicode-files:
+	$(ECHO) Downloading Unicode $(UNICODE_VERSION) data and  property files...
+	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_DATA_DIR)"
+	$(Q) $(UNICODE_DOWNLOAD) $(UNICODE_FILES) $(UNICODE_PROPERTY_FILES)
+
+$(UNICODE_AUXILIARY_FILES): update-unicode-auxiliary-files
+update-unicode-auxiliary-files:
+	$(ECHO) Downloading Unicode $(UNICODE_VERSION) auxiliary files...
+	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_DATA_DIR)/auxiliary"
+	$(Q) $(UNICODE_AUXILIARY_DOWNLOAD) $(UNICODE_AUXILIARY_FILES)
+
+$(UNICODE_EMOJI_FILES): update-unicode-emoji-files
+update-unicode-emoji-files:
+	$(ECHO) Downloading Unicode emoji $(UNICODE_EMOJI_VERSION) files...
+	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_EMOJI_DATA_DIR)"
+	$(Q) $(UNICODE_EMOJI_DOWNLOAD) $(UNICODE_EMOJI_FILES)
+
+$(srcdir)/lib/unicode_normalize/$(HAVE_BASERUBY:yes=tables.rb): \
+	$(UNICODE_SRC_DATA_DIR)/.unicode-tables.time
+
+$(UNICODE_SRC_DATA_DIR)/$(ALWAYS_UPDATE_UNICODE:yes=.unicode-tables.time): \
+	$(UNICODE_FILES) $(UNICODE_PROPERTY_FILES) \
+	$(UNICODE_AUXILIARY_FILES) $(UNICODE_EMOJI_FILES)
+
+touch-unicode-files:
+	$(MAKEDIRS) $(UNICODE_SRC_DATA_DIR)
+	touch $(UNICODE_SRC_DATA_DIR)/.unicode-tables.time $(UNICODE_DATA_HEADERS)
+
+UNICODE_TABLES_TIMESTAMP = yes
+$(UNICODE_SRC_DATA_DIR)/.unicode-tables.time: $(tooldir)/generic_erb.rb \
+		$(srcdir)/template/unicode_norm_gen.tmpl \
+		$(ALWAYS_UPDATE_UNICODE:yes=update-unicode)
+	$(Q) $(MAKE) $(@D)
+	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb \
+		-c $(UNICODE_TABLES_TIMESTAMP:yes=-t$@) \
+		-o $(srcdir)/lib/unicode_normalize/tables.rb \
+		-I $(srcdir) \
+		$(srcdir)/template/unicode_norm_gen.tmpl \
+		$(UNICODE_DATA_DIR) lib/unicode_normalize
+
+$(UNICODE_SRC_DATA_DIR):
+	$(gnumake_recursive)$(Q) $(MAKEDIRS) $@
+
+$(UNICODE_HDR_DIR)/$(ALWAYS_UPDATE_UNICODE:yes=name2ctype.h): \
+		$(tooldir)/enc-unicode.rb \
+		$(UNICODE_SRC_DATA_DIR)/UnicodeData.txt \
+		$(UNICODE_PROPERTY_FILES) \
+		$(UNICODE_EMOJI_FILES)
+
+$(UNICODE_HDR_DIR)/name2ctype.h:
+	$(MAKEDIRS) $(@D)
+	$(BOOTSTRAPRUBY) $(tooldir)/enc-unicode.rb --header \
+		$(UNICODE_SRC_DATA_DIR) $(UNICODE_SRC_EMOJI_DATA_DIR) > $@.new
+	$(MV) $@.new $@
+
+# the next non-comment line was:
+# $(UNICODE_HDR_DIR)/casefold.h: $(srcdir)/enc/unicode/case-folding.rb \
+# but was changed to make sure CI works on systems that don't have gperf
+unicode-up: $(UNICODE_DATA_HEADERS)
+
+$(UNICODE_HDR_DIR)/$(ALWAYS_UPDATE_UNICODE:yes=casefold.h): \
+		$(srcdir)/enc/unicode/case-folding.rb \
+		$(UNICODE_SRC_DATA_DIR)/UnicodeData.txt \
+		$(UNICODE_SRC_DATA_DIR)/SpecialCasing.txt \
+		$(UNICODE_SRC_DATA_DIR)/CaseFolding.txt
+
+$(UNICODE_HDR_DIR)/casefold.h:
+	$(MAKEDIRS) $(@D)
+	$(Q) $(BASERUBY) $(srcdir)/enc/unicode/case-folding.rb \
+		--output-file=$@ \
+		--mapping-data-directory=$(UNICODE_SRC_DATA_DIR)
+
+download-extlibs:
+	$(Q) $(BASERUBY) -C $(srcdir) -w tool/extlibs.rb --download ext
+
+extract-extlibs:
+	$(Q) $(BASERUBY) -C $(srcdir) -w tool/extlibs.rb --all ext
+
+clean-extlibs:
+	$(Q) $(RMALL) $(srcdir)/.downloaded-cache
+
+clean-gems:
+	$(Q) $(RM) gems/*.gem
+
+CLEAN_CACHE = clean-extlibs
+
+info: info-program info-libruby_a info-libruby_so info-arch
+info-program: PHONY
+	@echo PROGRAM=$(PROGRAM)
+info-libruby_a: PHONY
+	@echo LIBRUBY_A=$(LIBRUBY_A)
+info-libruby_so: PHONY
+	@echo LIBRUBY_SO=$(LIBRUBY_SO)
+info-arch: PHONY
+	@echo arch=$(arch)
+
+exam: check
+
+love: sudo-precheck up all test exam install
+	@echo love is all you need
+
+great: exam
+
+yes-test-all no-test-all: sudo-precheck
+
+sudo-precheck: PHONY
+	@$(SUDO) echo > $(NULL)
+
+update-man-date: PHONY
+	-$(Q) $(BASERUBY) -I"$(tooldir)/lib" -rvcs -i -p \
+	-e 'BEGIN{@vcs=VCS.detect(ARGV.shift)}' \
+	-e '$$_.sub!(/^(\.Dd ).*/){$$1+@vcs.modified(ARGF.path).strftime("%B %d, %Y")}' \
+	"$(srcdir)" "$(srcdir)"/man/*.1
+
+.PHONY: ChangeLog
+ChangeLog:
+	$(ECHO) Generating $@
+	-$(Q) $(BASERUBY) -I"$(tooldir)/lib" -rvcs \
+	-e 'VCS.detect(ARGV[0]).export_changelog("@", nil, nil, ARGV[1])' \
+	"$(srcdir)" $@
+
+HELP_EXTRA_TASKS = ""
 
 help: PHONY
-	@echo "                Makefile of Ruby"
-	@echo ""
-	@echo "targets:"
-	@echo "  all (default):   builds ruby"
-	@echo "  miniruby:        builds only miniruby"
-	@echo "  run:             runs test.rb by miniruby"
-	@echo "  runruby:         runs test.rb by ruby you just built"
-	@echo "  gdb:             runs test.rb by miniruby under gdb"
-	@echo "  gdb-ruby:        runs test.rb by ruby under gdb"
-	@echo "  all:             compile ruby and extensions"
-	@echo "  check:           equals make test test-all"
-	@echo "  test:            ruby core tests"
-	@echo "  test-all:        all ruby tests"
-	@echo "  test-rubyspec    run RubySpec test suite"
-	@echo "  update-rubyspec  update local copy of RubySpec"
-	@echo "  install:         install all ruby distributions"
-	@echo "  install-nodoc:   install without rdoc"
-	@echo "  clean:           clean built objects"
-	@echo "  golf:            for golfers"
-	@echo
-	@echo "see DeveloperHowto for more detail: "
-	@echo "  http://redmine.ruby-lang.org/wiki/ruby/DeveloperHowto"
+	$(MESSAGE_BEGIN) \
+	"                Makefile of Ruby" \
+	"" \
+	"targets:" \
+	"  all (default):       builds all of below" \
+	"  miniruby:            builds only miniruby" \
+	"  encs:                builds encodings" \
+	"  exts:                builds extensions" \
+	"  main:                builds encodings, extensions and ruby" \
+	"  docs:                builds documents" \
+	"  install-capi:        builds C API documents" \
+	"  run:                 runs test.rb by miniruby" \
+	"  runruby:             runs test.rb by ruby you just built" \
+	"  gdb:                 runs test.rb by miniruby under gdb" \
+	"  gdb-ruby:            runs test.rb by ruby under gdb" \
+	"  check:               equals make test test-tool test-all test-spec" \
+	"  test:                ruby core tests [BTESTS=<bootstraptest files>]" \
+	"  test-all:            all ruby tests [TESTOPTS=-j4 TESTS=<test files>]" \
+	"  test-spec:           run the Ruby spec suite [SPECOPTS=<specs, opts>]" \
+	"  test-bundler:        run the Bundler spec" \
+	"  test-bundled-gems:   run the test suite of bundled gems" \
+	"  test-tool:           tests under the tool/test" \
+	"  update-gems:         download files of the bundled gems" \
+	"  update-bundled_gems: update the latest version of bundled gems" \
+	"  sync-default-gems:   sync default gems from upstream [GEM=<gem_name>]" \
+	"  up:                  update local copy and autogenerated files" \
+	"  benchmark:           benchmark this ruby and COMPARE_RUBY." \
+	"  gcbench:             gc benchmark [GCBENCH_ITEM=<item_name>]" \
+	"  install:             install all ruby distributions" \
+	"  install-nodoc:       install without rdoc" \
+	"  install-cross:       install cross compiling stuff" \
+	"  clean:               clean for tarball" \
+	"  distclean:           clean for repository" \
+	"  golf:                build goruby for golfers" \
+	$(HELP_EXTRA_TASKS) \
+	"see DeveloperHowto for more detail: " \
+	"  https://bugs.ruby-lang.org/projects/ruby/wiki/DeveloperHowto" \
+	$(MESSAGE_END)
+
+# AUTOGENERATED DEPENDENCIES START
+addr2line.$(OBJEXT): {$(VPATH)}addr2line.c
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+array.$(OBJEXT): $(hdrdir)/ruby.h
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+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/attribute.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/builtin.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/c_attribute.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/cpp_attribute.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/declspec_attribute.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/extension.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/feature.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/has/warning.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/array.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/bignum.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/class.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/compar.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/complex.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/cont.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/dir.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/enum.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/enumerator.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/error.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/eval.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/file.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/gc.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/hash.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/io.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/load.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/marshal.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/numeric.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/object.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/parse.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/proc.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/process.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/random.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/range.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/rational.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/re.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/ruby.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/select.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/select/largesize.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/signal.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/sprintf.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/string.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/struct.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/thread.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/time.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/variable.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/intern/vm.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/interpreter.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/iterator.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/memory.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/method.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/module.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/newobj.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/rgengc.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/scan_args.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/special_consts.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/static_assert.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/stdalign.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/stdbool.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/symbol.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/token_paste.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/value.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/value_type.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/variable.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/warning_push.h
+vm_trace.$(OBJEXT): {$(VPATH)}internal/xmalloc.h
+vm_trace.$(OBJEXT): {$(VPATH)}iseq.h
+vm_trace.$(OBJEXT): {$(VPATH)}method.h
+vm_trace.$(OBJEXT): {$(VPATH)}missing.h
+vm_trace.$(OBJEXT): {$(VPATH)}mjit.h
+vm_trace.$(OBJEXT): {$(VPATH)}node.h
+vm_trace.$(OBJEXT): {$(VPATH)}onigmo.h
+vm_trace.$(OBJEXT): {$(VPATH)}oniguruma.h
+vm_trace.$(OBJEXT): {$(VPATH)}ractor.h
+vm_trace.$(OBJEXT): {$(VPATH)}ruby_assert.h
+vm_trace.$(OBJEXT): {$(VPATH)}ruby_atomic.h
+vm_trace.$(OBJEXT): {$(VPATH)}st.h
+vm_trace.$(OBJEXT): {$(VPATH)}subst.h
+vm_trace.$(OBJEXT): {$(VPATH)}thread_$(THREAD_MODEL).h
+vm_trace.$(OBJEXT): {$(VPATH)}thread_native.h
+vm_trace.$(OBJEXT): {$(VPATH)}trace_point.rbinc
+vm_trace.$(OBJEXT): {$(VPATH)}vm_core.h
+vm_trace.$(OBJEXT): {$(VPATH)}vm_opts.h
+vm_trace.$(OBJEXT): {$(VPATH)}vm_trace.c
+# AUTOGENERATED DEPENDENCIES END
diff --git a/compar.c b/compar.c
index 633c5b5309..04d4ff8c70 100644
--- a/compar.c
+++ b/compar.c
@@ -9,48 +9,67 @@
 
 **********************************************************************/
 
+#include "id.h"
+#include "internal.h"
+#include "internal/compar.h"
+#include "internal/error.h"
+#include "internal/vm.h"
 #include "ruby/ruby.h"
 
 VALUE rb_mComparable;
 
-static ID cmp;
+static VALUE
+rb_cmp(VALUE x, VALUE y)
+{
+    return rb_funcallv(x, idCmp, 1, &y);
+}
 
 void
 rb_cmperr(VALUE x, VALUE y)
 {
-    const char *classname;
+    VALUE classname;
 
-    if (SPECIAL_CONST_P(y)) {
-	y = rb_inspect(y);
-	classname = StringValuePtr(y);
+    if (SPECIAL_CONST_P(y) || BUILTIN_TYPE(y) == T_FLOAT) {
+	classname = rb_inspect(y);
     }
     else {
-	classname = rb_obj_classname(y);
+	classname = rb_obj_class(y);
     }
-    rb_raise(rb_eArgError, "comparison of %s with %s failed",
-	     rb_obj_classname(x), classname);
+    rb_raise(rb_eArgError, "comparison of %"PRIsVALUE" with %"PRIsVALUE" failed",
+	     rb_obj_class(x), classname);
 }
 
 static VALUE
-cmp_eq(VALUE *a)
+invcmp_recursive(VALUE x, VALUE y, int recursive)
 {
-    VALUE c = rb_funcall(a[0], cmp, 1, a[1]);
+    if (recursive) return Qnil;
+    return rb_cmp(y, x);
+}
 
-    if (NIL_P(c)) return Qfalse;
-    if (rb_cmpint(c, a[0], a[1]) == 0) return Qtrue;
-    return Qfalse;
+VALUE
+rb_invcmp(VALUE x, VALUE y)
+{
+    VALUE invcmp = rb_exec_recursive(invcmp_recursive, x, y);
+    if (invcmp == Qundef || NIL_P(invcmp)) {
+	return Qnil;
+    }
+    else {
+	int result = -rb_cmpint(invcmp, x, y);
+	return INT2FIX(result);
+    }
 }
 
 static VALUE
-cmp_failed(void)
+cmp_eq_recursive(VALUE arg1, VALUE arg2, int recursive)
 {
-    return Qfalse;
+    if (recursive) return Qnil;
+    return rb_cmp(arg1, arg2);
 }
 
 /*
  *  call-seq:
- *     obj == other    => true or false
- *  
+ *     obj == other    -> true or false
+ *
  *  Compares two objects based on the receiver's <code><=></code>
  *  method, returning true if it returns 0. Also returns true if
  *  _obj_ and _other_ are the same object.
@@ -59,120 +78,197 @@ cmp_failed(void)
 static VALUE
 cmp_equal(VALUE x, VALUE y)
 {
-    VALUE a[2];
-
+    VALUE c;
     if (x == y) return Qtrue;
 
-    a[0] = x; a[1] = y;
-    return rb_rescue(cmp_eq, (VALUE)a, cmp_failed, 0);
+    c = rb_exec_recursive_paired_outer(cmp_eq_recursive, x, y, y);
+
+    if (NIL_P(c)) return Qfalse;
+    if (rb_cmpint(c, x, y) == 0) return Qtrue;
+    return Qfalse;
+}
+
+static int
+cmpint(VALUE x, VALUE y)
+{
+    return rb_cmpint(rb_cmp(x, y), x, y);
 }
 
 /*
  *  call-seq:
- *     obj > other    => true or false
- *  
+ *     obj > other    -> true or false
+ *
  *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns 1.
+ *  method, returning true if it returns a value greater than 0.
  */
 
 static VALUE
 cmp_gt(VALUE x, VALUE y)
 {
-    VALUE c = rb_funcall(x, cmp, 1, y);
-
-    if (rb_cmpint(c, x, y) > 0) return Qtrue;
+    if (cmpint(x, y) > 0) return Qtrue;
     return Qfalse;
 }
 
 /*
  *  call-seq:
- *     obj >= other    => true or false
- *  
+ *     obj >= other    -> true or false
+ *
  *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns 0 or 1.
+ *  method, returning true if it returns a value greater than or equal to 0.
  */
 
 static VALUE
 cmp_ge(VALUE x, VALUE y)
 {
-    VALUE c = rb_funcall(x, cmp, 1, y);
-
-    if (rb_cmpint(c, x, y) >= 0) return Qtrue;
+    if (cmpint(x, y) >= 0) return Qtrue;
     return Qfalse;
 }
 
 /*
  *  call-seq:
- *     obj < other    => true or false
- *  
+ *     obj < other    -> true or false
+ *
  *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns -1.
+ *  method, returning true if it returns a value less than 0.
  */
 
 static VALUE
 cmp_lt(VALUE x, VALUE y)
 {
-    VALUE c = rb_funcall(x, cmp, 1, y);
-
-    if (rb_cmpint(c, x, y) < 0) return Qtrue;
+    if (cmpint(x, y) < 0) return Qtrue;
     return Qfalse;
 }
 
 /*
  *  call-seq:
- *     obj <= other    => true or false
- *  
+ *     obj <= other    -> true or false
+ *
  *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns -1 or 0.
+ *  method, returning true if it returns a value less than or equal to 0.
  */
 
 static VALUE
 cmp_le(VALUE x, VALUE y)
 {
-    VALUE c = rb_funcall(x, cmp, 1, y);
-
-    if (rb_cmpint(c, x, y) <= 0) return Qtrue;
+    if (cmpint(x, y) <= 0) return Qtrue;
     return Qfalse;
 }
 
 /*
  *  call-seq:
- *     obj.between?(min, max)    => true or false
- *  
- *  Returns <code>false</code> if <i>obj</i> <code><=></code>
- *  <i>min</i> is less than zero or if <i>anObject</i> <code><=></code>
- *  <i>max</i> is greater than zero, <code>true</code> otherwise.
- *     
+ *     obj.between?(min, max)    -> true or false
+ *
+ *  Returns <code>false</code> if _obj_ <code><=></code> _min_ is less
+ *  than zero or if _obj_ <code><=></code> _max_ is greater than zero,
+ *  <code>true</code> otherwise.
+ *
  *     3.between?(1, 5)               #=> true
  *     6.between?(1, 5)               #=> false
  *     'cat'.between?('ant', 'dog')   #=> true
  *     'gnu'.between?('ant', 'dog')   #=> false
- *     
+ *
  */
 
 static VALUE
 cmp_between(VALUE x, VALUE min, VALUE max)
 {
-    if (RTEST(cmp_lt(x, min))) return Qfalse;
-    if (RTEST(cmp_gt(x, max))) return Qfalse;
+    if (cmpint(x, min) < 0) return Qfalse;
+    if (cmpint(x, max) > 0) return Qfalse;
     return Qtrue;
 }
 
 /*
- *  The <code>Comparable</code> mixin is used by classes whose objects
- *  may be ordered. The class must define the <code><=></code> operator,
- *  which compares the receiver against another object, returning -1, 0,
- *  or +1 depending on whether the receiver is less than, equal to, or
- *  greater than the other object. <code>Comparable</code> uses
- *  <code><=></code> to implement the conventional comparison operators
- *  (<code><</code>, <code><=</code>, <code>==</code>, <code>>=</code>,
- *  and <code>></code>) and the method <code>between?</code>.
- *     
+ *  call-seq:
+ *     obj.clamp(min, max) ->  obj
+ *     obj.clamp(range)    ->  obj
+ *
+ * In <code>(min, max)</code> form, returns _min_ if _obj_
+ * <code><=></code> _min_ is less than zero, _max_ if _obj_
+ * <code><=></code> _max_ is greater than zero, and _obj_
+ * otherwise.
+ *
+ *     12.clamp(0, 100)         #=> 12
+ *     523.clamp(0, 100)        #=> 100
+ *     -3.123.clamp(0, 100)     #=> 0
+ *
+ *     'd'.clamp('a', 'f')      #=> 'd'
+ *     'z'.clamp('a', 'f')      #=> 'f'
+ *
+ * In <code>(range)</code> form, returns _range.begin_ if _obj_
+ * <code><=></code> _range.begin_ is less than zero, _range.end_
+ * if _obj_ <code><=></code> _range.end_ is greater than zero, and
+ * _obj_ otherwise.
+ *
+ *     12.clamp(0..100)         #=> 12
+ *     523.clamp(0..100)        #=> 100
+ *     -3.123.clamp(0..100)     #=> 0
+ *
+ *     'd'.clamp('a'..'f')      #=> 'd'
+ *     'z'.clamp('a'..'f')      #=> 'f'
+ *
+ * If _range.begin_ is +nil+, it is considered smaller than _obj_,
+ * and if _range.end_ is +nil+, it is considered greater than
+ * _obj_.
+ *
+ *     -20.clamp(0..)           #=> 0
+ *     523.clamp(..100)         #=> 100
+ *
+ * When _range.end_ is excluded and not +nil+, an exception is
+ * raised.
+ *
+ *     100.clamp(0...100)       # ArgumentError
+ */
+
+static VALUE
+cmp_clamp(int argc, VALUE *argv, VALUE x)
+{
+    VALUE min, max;
+    int c, excl = 0;
+
+    if (rb_scan_args(argc, argv, "11", &min, &max) == 1) {
+        VALUE range = min;
+        if (!rb_range_values(range, &min, &max, &excl)) {
+            rb_raise(rb_eTypeError, "wrong argument type %s (expected Range)",
+                     rb_builtin_class_name(range));
+        }
+        if (!NIL_P(max)) {
+            if (excl) rb_raise(rb_eArgError, "cannot clamp with an exclusive range");
+        }
+    }
+    if (!NIL_P(min) && !NIL_P(max) && cmpint(min, max) > 0) {
+	rb_raise(rb_eArgError, "min argument must be smaller than max argument");
+    }
+
+    if (!NIL_P(min)) {
+        c = cmpint(x, min);
+        if (c == 0) return x;
+        if (c < 0) return min;
+    }
+    if (!NIL_P(max)) {
+        c = cmpint(x, max);
+        if (c > 0) return max;
+    }
+    return x;
+}
+
+/*
+ *  The Comparable mixin is used by classes whose objects may be
+ *  ordered. The class must define the <code><=></code> operator,
+ *  which compares the receiver against another object, returning a
+ *  value less than 0, returning 0, or returning a value greater than 0,
+ *  depending on whether the receiver is less than, equal to,
+ *  or greater than the other object. If the other object is not
+ *  comparable then the <code><=></code> operator should return +nil+.
+ *  Comparable uses <code><=></code> to implement the conventional
+ *  comparison operators (<code><</code>, <code><=</code>,
+ *  <code>==</code>, <code>>=</code>, and <code>></code>) and the
+ *  method <code>between?</code>.
+ *
  *     class SizeMatters
  *       include Comparable
  *       attr :str
- *       def <=>(anOther)
- *         str.size <=> anOther.str.size
+ *       def <=>(other)
+ *         str.size <=> other.str.size
  *       end
  *       def initialize(str)
  *         @str = str
@@ -181,26 +277,23 @@ cmp_between(VALUE x, VALUE min, VALUE max)
  *         @str
  *       end
  *     end
- *     
+ *
  *     s1 = SizeMatters.new("Z")
  *     s2 = SizeMatters.new("YY")
  *     s3 = SizeMatters.new("XXX")
  *     s4 = SizeMatters.new("WWWW")
  *     s5 = SizeMatters.new("VVVVV")
- *     
+ *
  *     s1 < s2                       #=> true
  *     s4.between?(s1, s3)           #=> false
  *     s4.between?(s3, s5)           #=> true
  *     [ s3, s2, s5, s4, s1 ].sort   #=> [Z, YY, XXX, WWWW, VVVVV]
- *     
+ *
  */
 
 void
 Init_Comparable(void)
 {
-#undef rb_intern
-#define rb_intern(str) rb_intern_const(str)
-
     rb_mComparable = rb_define_module("Comparable");
     rb_define_method(rb_mComparable, "==", cmp_equal, 1);
     rb_define_method(rb_mComparable, ">", cmp_gt, 1);
@@ -208,6 +301,5 @@ Init_Comparable(void)
     rb_define_method(rb_mComparable, "<", cmp_lt, 1);
     rb_define_method(rb_mComparable, "<=", cmp_le, 1);
     rb_define_method(rb_mComparable, "between?", cmp_between, 2);
-
-    cmp = rb_intern("<=>");
+    rb_define_method(rb_mComparable, "clamp", cmp_clamp, -1);
 }
diff --git a/compile.c b/compile.c
index d9f3731c3e..9844c145bc 100644
--- a/compile.c
+++ b/compile.c
@@ -9,21 +9,54 @@
 
 **********************************************************************/
 
-#include "ruby/ruby.h"
+#include "ruby/internal/config.h"
+#include <math.h>
 
-#define USE_INSN_STACK_INCREASE 1
-#include "vm_core.h"
+#ifdef HAVE_DLADDR
+# include <dlfcn.h>
+#endif
+
+#include "encindex.h"
+#include "gc.h"
+#include "id_table.h"
+#include "internal.h"
+#include "internal/array.h"
+#include "internal/compile.h"
+#include "internal/complex.h"
+#include "internal/encoding.h"
+#include "internal/error.h"
+#include "internal/hash.h"
+#include "internal/numeric.h"
+#include "internal/object.h"
+#include "internal/rational.h"
+#include "internal/re.h"
+#include "internal/symbol.h"
+#include "internal/thread.h"
+#include "internal/variable.h"
 #include "iseq.h"
+#include "ruby/re.h"
+#include "ruby/util.h"
+#include "vm_core.h"
+#include "vm_callinfo.h"
+#include "vm_debug.h"
+
+#include "builtin.h"
 #include "insns.inc"
 #include "insns_info.inc"
 
+#undef RUBY_UNTYPED_DATA_WARNING
+#define RUBY_UNTYPED_DATA_WARNING 0
+
+#define FIXNUM_INC(n, i) ((n)+(INT2FIX(i)&~FIXNUM_FLAG))
+#define FIXNUM_OR(n, i) ((n)|INT2FIX(i))
 
 typedef struct iseq_link_element {
     enum {
-	ISEQ_ELEMENT_NONE   = INT2FIX(0x00),
-	ISEQ_ELEMENT_LABEL  = INT2FIX(0x01),
-	ISEQ_ELEMENT_INSN   = INT2FIX(0x02),
-	ISEQ_ELEMENT_ADJUST = INT2FIX(0x03)
+	ISEQ_ELEMENT_ANCHOR,
+	ISEQ_ELEMENT_LABEL,
+	ISEQ_ELEMENT_INSN,
+	ISEQ_ELEMENT_ADJUST,
+        ISEQ_ELEMENT_TRACE,
     } type;
     struct iseq_link_element *next;
     struct iseq_link_element *prev;
@@ -34,22 +67,35 @@ typedef struct iseq_link_anchor {
     LINK_ELEMENT *last;
 } LINK_ANCHOR;
 
+typedef enum {
+    LABEL_RESCUE_NONE,
+    LABEL_RESCUE_BEG,
+    LABEL_RESCUE_END,
+    LABEL_RESCUE_TYPE_MAX
+} LABEL_RESCUE_TYPE;
+
 typedef struct iseq_label_data {
     LINK_ELEMENT link;
     int label_no;
     int position;
     int sc_state;
-    int set;
     int sp;
+    int refcnt;
+    unsigned int set: 1;
+    unsigned int rescued: 2;
+    unsigned int unremovable: 1;
 } LABEL;
 
 typedef struct iseq_insn_data {
     LINK_ELEMENT link;
     enum ruby_vminsn_type insn_id;
-    int line_no;
     int operand_size;
     int sc_state;
     VALUE *operands;
+    struct {
+	int line_no;
+	rb_event_flag_t events;
+    } insn_info;
 } INSN;
 
 typedef struct iseq_adjust_data {
@@ -58,6 +104,12 @@ typedef struct iseq_adjust_data {
     int line_no;
 } ADJUST;
 
+typedef struct iseq_trace_data {
+    LINK_ELEMENT link;
+    rb_event_flag_t event;
+    long data;
+} TRACE;
+
 struct ensure_range {
     LABEL *begin;
     LABEL *end;
@@ -65,11 +117,13 @@ struct ensure_range {
 };
 
 struct iseq_compile_data_ensure_node_stack {
-    NODE *ensure_node;
+    const NODE *ensure_node;
     struct iseq_compile_data_ensure_node_stack *prev;
     struct ensure_range *erange;
 };
 
+const ID rb_iseq_shared_exc_local_tbl[] = {idERROR_INFO};
+
 /**
  * debug function(macro) interface depend on CPDEBUG
  * if it is less than 0, runtime option is in effect.
@@ -90,212 +144,306 @@ struct iseq_compile_data_ensure_node_stack {
 #if CPDEBUG >= 0
 #define compile_debug CPDEBUG
 #else
-#define compile_debug iseq->compile_data->option->debug_level
+#define compile_debug ISEQ_COMPILE_DATA(iseq)->option->debug_level
 #endif
 
-NORETURN(PRINTF_ARGS(void rb_compile_bug(const char*, int, const char*, ...), 3, 4));
-
 #if CPDEBUG
 
 #define compile_debug_print_indent(level) \
-    ruby_debug_print_indent(level, compile_debug, gl_node_level * 2)
+    ruby_debug_print_indent((level), compile_debug, gl_node_level * 2)
 
 #define debugp(header, value) (void) \
   (compile_debug_print_indent(1) && \
-   ruby_debug_print_value(1, compile_debug, header, value))
+   ruby_debug_print_value(1, compile_debug, (header), (value)))
 
 #define debugi(header, id)  (void) \
   (compile_debug_print_indent(1) && \
-   ruby_debug_print_id(1, compile_debug, header, id))
+   ruby_debug_print_id(1, compile_debug, (header), (id)))
 
 #define debugp_param(header, value)  (void) \
   (compile_debug_print_indent(1) && \
-   ruby_debug_print_value(1, compile_debug, header, value))
+   ruby_debug_print_value(1, compile_debug, (header), (value)))
 
 #define debugp_verbose(header, value)  (void) \
   (compile_debug_print_indent(2) && \
-   ruby_debug_print_value(2, compile_debug, header, value))
+   ruby_debug_print_value(2, compile_debug, (header), (value)))
 
 #define debugp_verbose_node(header, value)  (void) \
   (compile_debug_print_indent(10) && \
-   ruby_debug_print_value(10, compile_debug, header, value))
+   ruby_debug_print_value(10, compile_debug, (header), (value)))
 
 #define debug_node_start(node)  ((void) \
   (compile_debug_print_indent(1) && \
-   (ruby_debug_print_node(1, CPDEBUG, "", (NODE *)node), gl_node_level)), \
+   (ruby_debug_print_node(1, CPDEBUG, "", (const NODE *)(node)), gl_node_level)), \
    gl_node_level++)
 
-#define debug_node_end()  gl_node_level --;
+#define debug_node_end()  gl_node_level --
 
 #else
 
-static inline ID
-r_id(ID id)
-{
-    return id;
-}
-
-static inline VALUE
-r_value(VALUE value)
-{
-    return value;
-}
-
-#define debugi(header, id)                 r_id(id)
-#define debugp(header, value)              r_value(value)
-#define debugp_verbose(header, value)      r_value(value)
-#define debugp_verbose_node(header, value) r_value(value)
-#define debugp_param(header, value)        r_value(value)
+#define debugi(header, id)                 ((void)0)
+#define debugp(header, value)              ((void)0)
+#define debugp_verbose(header, value)      ((void)0)
+#define debugp_verbose_node(header, value) ((void)0)
+#define debugp_param(header, value)        ((void)0)
 #define debug_node_start(node)             ((void)0)
 #define debug_node_end()                   ((void)0)
 #endif
 
 #if CPDEBUG > 1 || CPDEBUG < 0
-PRINTF_ARGS(void ruby_debug_printf(const char*, ...), 1, 2);
+#undef printf
+#define printf ruby_debug_printf
 #define debugs if (compile_debug_print_indent(1)) ruby_debug_printf
-#define debug_compile(msg, v) ((void)(compile_debug_print_indent(1) && fputs(msg, stderr)), (v))
+#define debug_compile(msg, v) ((void)(compile_debug_print_indent(1) && fputs((msg), stderr)), (v))
 #else
 #define debugs                             if(0)printf
 #define debug_compile(msg, v) (v)
 #endif
 
+#define LVAR_ERRINFO (1)
 
 /* create new label */
-#define NEW_LABEL(l) new_label_body(iseq, l)
-
-#define iseq_filename(iseq) \
-  (((rb_iseq_t*)DATA_PTR(iseq))->filename)
-
-#define NEW_ISEQVAL(node, name, type)       \
-  new_child_iseq(iseq, node, name, 0, type)
+#define NEW_LABEL(l) new_label_body(iseq, (l))
+#define LABEL_FORMAT "<L%03d>"
 
-#define NEW_CHILD_ISEQVAL(node, name, type)       \
-  new_child_iseq(iseq, node, name, iseq->self, type)
+#define NEW_ISEQ(node, name, type, line_no) \
+  new_child_iseq(iseq, (node), rb_fstring(name), 0, (type), (line_no))
 
-#define NEW_SPECIAQL_BLOCK_ISEQVAL(iseq, sym) \
-  new_child_iseq(iseq, iseq->node, iseq->name, iseq->parent_iseq, iseq->type, sym)
+#define NEW_CHILD_ISEQ(node, name, type, line_no) \
+  new_child_iseq(iseq, (node), rb_fstring(name), iseq, (type), (line_no))
 
 /* add instructions */
 #define ADD_SEQ(seq1, seq2) \
-  APPEND_LIST(seq1, seq2)
+  APPEND_LIST((seq1), (seq2))
 
 /* add an instruction */
 #define ADD_INSN(seq, line, insn) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) new_insn_body(iseq, line, BIN(insn), 0))
+  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
 
-/* add an instruction with label operand */
-#define ADD_INSNL(seq, line, insn, label) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) \
-           new_insn_body(iseq, line, BIN(insn), 1, (VALUE)label))
+/* insert an instruction before next */
+#define INSERT_BEFORE_INSN(next, line, insn) \
+  ELEM_INSERT_PREV(&(next)->link, (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
+
+/* insert an instruction after prev */
+#define INSERT_AFTER_INSN(prev, line, insn) \
+  ELEM_INSERT_NEXT(&(prev)->link, (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
 
 /* add an instruction with some operands (1, 2, 3, 5) */
 #define ADD_INSN1(seq, line, insn, op1) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) \
-           new_insn_body(iseq, line, BIN(insn), 1, (VALUE)op1))
+  ADD_ELEM((seq), (LINK_ELEMENT *) \
+           new_insn_body(iseq, (line), BIN(insn), 1, (VALUE)(op1)))
+
+/* insert an instruction with some operands (1, 2, 3, 5) before next */
+#define INSERT_BEFORE_INSN1(next, line, insn, op1) \
+  ELEM_INSERT_PREV(&(next)->link, (LINK_ELEMENT *) \
+           new_insn_body(iseq, (line), BIN(insn), 1, (VALUE)(op1)))
+
+/* insert an instruction with some operands (1, 2, 3, 5) after prev */
+#define INSERT_AFTER_INSN1(prev, line, insn, op1) \
+  ELEM_INSERT_NEXT(&(prev)->link, (LINK_ELEMENT *) \
+           new_insn_body(iseq, (line), BIN(insn), 1, (VALUE)(op1)))
+
+#define LABEL_REF(label) ((label)->refcnt++)
+
+/* add an instruction with label operand (alias of ADD_INSN1) */
+#define ADD_INSNL(seq, line, insn, label) (ADD_INSN1(seq, line, insn, label), LABEL_REF(label))
 
 #define ADD_INSN2(seq, line, insn, op1, op2) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) \
-           new_insn_body(iseq, line, BIN(insn), 2, (VALUE)op1, (VALUE)op2))
+  ADD_ELEM((seq), (LINK_ELEMENT *) \
+           new_insn_body(iseq, (line), BIN(insn), 2, (VALUE)(op1), (VALUE)(op2)))
 
 #define ADD_INSN3(seq, line, insn, op1, op2, op3) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) \
-           new_insn_body(iseq, line, BIN(insn), 3, (VALUE)op1, (VALUE)op2, (VALUE)op3))
+  ADD_ELEM((seq), (LINK_ELEMENT *) \
+           new_insn_body(iseq, (line), BIN(insn), 3, (VALUE)(op1), (VALUE)(op2), (VALUE)(op3)))
 
 /* Specific Insn factory */
 #define ADD_SEND(seq, line, id, argc) \
-  ADD_SEND_R(seq, line, id, argc, (VALUE)Qfalse, (VALUE)INT2FIX(0))
+  ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)INT2FIX(0), NULL)
+
+#define ADD_SEND_WITH_FLAG(seq, line, id, argc, flag) \
+  ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)(flag), NULL)
+
+#define ADD_SEND_WITH_BLOCK(seq, line, id, argc, block) \
+  ADD_SEND_R((seq), (line), (id), (argc), (block), (VALUE)INT2FIX(0), NULL)
 
 #define ADD_CALL_RECEIVER(seq, line) \
-  ADD_INSN(seq, line, putnil)
+  ADD_INSN((seq), (line), putself)
 
 #define ADD_CALL(seq, line, id, argc) \
-  ADD_SEND_R(seq, line, id, argc, (VALUE)Qfalse, (VALUE)INT2FIX(VM_CALL_FCALL_BIT))
+  ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)INT2FIX(VM_CALL_FCALL), NULL)
 
 #define ADD_CALL_WITH_BLOCK(seq, line, id, argc, block) \
-  ADD_SEND_R(seq, line, id, argc, block, (VALUE)INT2FIX(VM_CALL_FCALL_BIT))
-
-#define ADD_SEND_R(seq, line, id, argc, block, flag) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) \
-           new_insn_send(iseq, line, \
-                         (VALUE)id, (VALUE)argc, (VALUE)block, (VALUE)flag))
-
-#define ADD_TRACE(seq, line, event) \
-  do { \
-      if ((event) == RUBY_EVENT_LINE && iseq->coverage && \
-	  RARRAY_PTR(iseq->coverage)[(line) - 1] == Qnil) { \
-	  RARRAY_PTR(iseq->coverage)[(line) - 1] = INT2FIX(0); \
-	  ADD_INSN1(seq, line, trace, INT2FIX(RUBY_EVENT_COVERAGE)); \
-      } \
-      if (iseq->compile_data->option->trace_instruction) { \
-	  ADD_INSN1(seq, line, trace, INT2FIX(event)); \
-      } \
-  }while(0);
+  ADD_SEND_R((seq), (line), (id), (argc), (block), (VALUE)INT2FIX(VM_CALL_FCALL), NULL)
+
+#define ADD_SEND_R(seq, line, id, argc, block, flag, keywords) \
+  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_send(iseq, (line), (id), (VALUE)(argc), (block), (VALUE)(flag), (keywords)))
+
+#define ADD_TRACE(seq, event) \
+  ADD_ELEM((seq), (LINK_ELEMENT *)new_trace_body(iseq, (event), 0))
+#define ADD_TRACE_WITH_DATA(seq, event, data) \
+  ADD_ELEM((seq), (LINK_ELEMENT *)new_trace_body(iseq, (event), (data)))
+
+static void iseq_add_getlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level);
+static void iseq_add_setlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level);
+
+#define ADD_GETLOCAL(seq, line, idx, level) iseq_add_getlocal(iseq, (seq), (line), (idx), (level))
+#define ADD_SETLOCAL(seq, line, idx, level) iseq_add_setlocal(iseq, (seq), (line), (idx), (level))
 
 /* add label */
 #define ADD_LABEL(seq, label) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) label)
+  ADD_ELEM((seq), (LINK_ELEMENT *) (label))
+
+#define APPEND_LABEL(seq, before, label) \
+  APPEND_ELEM((seq), (before), (LINK_ELEMENT *) (label))
 
 #define ADD_ADJUST(seq, line, label) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) new_adjust_body(iseq, label, line))
+  ADD_ELEM((seq), (LINK_ELEMENT *) new_adjust_body(iseq, (label), (line)))
 
 #define ADD_ADJUST_RESTORE(seq, label) \
-  ADD_ELEM(seq, (LINK_ELEMENT *) new_adjust_body(iseq, label, -1))
-
-#define ADD_CATCH_ENTRY(type, ls, le, iseqv, lc)		\
-    (rb_ary_push(iseq->compile_data->catch_table_ary,		\
-		 rb_ary_new3(5, type,				\
-			     (VALUE)(ls) | 1, (VALUE)(le) | 1,	\
-			     iseqv, (VALUE)(lc) | 1)))
+  ADD_ELEM((seq), (LINK_ELEMENT *) new_adjust_body(iseq, (label), -1))
+
+#define LABEL_UNREMOVABLE(label) \
+    ((label) ? (LABEL_REF(label), (label)->unremovable=1) : 0)
+#define ADD_CATCH_ENTRY(type, ls, le, iseqv, lc) do {				\
+    VALUE _e = rb_ary_new3(5, (type),						\
+			   (VALUE)(ls) | 1, (VALUE)(le) | 1,			\
+			   (VALUE)(iseqv), (VALUE)(lc) | 1);			\
+    LABEL_UNREMOVABLE(ls);							\
+    LABEL_REF(le);								\
+    LABEL_REF(lc);								\
+    if (NIL_P(ISEQ_COMPILE_DATA(iseq)->catch_table_ary)) \
+        RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->catch_table_ary, rb_ary_tmp_new(3)); \
+    rb_ary_push(ISEQ_COMPILE_DATA(iseq)->catch_table_ary, freeze_hide_obj(_e));	\
+} while (0)
 
 /* compile node */
 #define COMPILE(anchor, desc, node) \
   (debug_compile("== " desc "\n", \
-                 iseq_compile_each(iseq, anchor, node, 0)))
+                 iseq_compile_each(iseq, (anchor), (node), 0)))
 
-/* compile node, this node's value will be poped */
-#define COMPILE_POPED(anchor, desc, node)    \
+/* compile node, this node's value will be popped */
+#define COMPILE_POPPED(anchor, desc, node)    \
   (debug_compile("== " desc "\n", \
-                 iseq_compile_each(iseq, anchor, node, 1)))
+                 iseq_compile_each(iseq, (anchor), (node), 1)))
 
-/* compile node, which is poped when 'poped' is true */
-#define COMPILE_(anchor, desc, node, poped)  \
+/* compile node, which is popped when 'popped' is true */
+#define COMPILE_(anchor, desc, node, popped)  \
   (debug_compile("== " desc "\n", \
-                 iseq_compile_each(iseq, anchor, node, poped)))
+                 iseq_compile_each(iseq, (anchor), (node), (popped))))
+
+#define COMPILE_RECV(anchor, desc, node) \
+    (private_recv_p(node) ? \
+     (ADD_INSN(anchor, nd_line(node), putself), VM_CALL_FCALL) : \
+     COMPILE(anchor, desc, node->nd_recv) ? 0 : -1)
 
 #define OPERAND_AT(insn, idx) \
-  (((INSN*)(insn))->operands[idx])
+  (((INSN*)(insn))->operands[(idx)])
 
 #define INSN_OF(insn) \
   (((INSN*)(insn))->insn_id)
 
+#define IS_INSN(link) ((link)->type == ISEQ_ELEMENT_INSN)
+#define IS_LABEL(link) ((link)->type == ISEQ_ELEMENT_LABEL)
+#define IS_ADJUST(link) ((link)->type == ISEQ_ELEMENT_ADJUST)
+#define IS_TRACE(link) ((link)->type == ISEQ_ELEMENT_TRACE)
+#define IS_INSN_ID(iobj, insn) (INSN_OF(iobj) == BIN(insn))
+#define IS_NEXT_INSN_ID(link, insn) \
+    ((link)->next && IS_INSN((link)->next) && IS_INSN_ID((link)->next, insn))
+
 /* error */
-#define COMPILE_ERROR(strs)                        \
-{                                                  \
-  VALUE tmp = GET_THREAD()->errinfo;               \
-  if (compile_debug) rb_compile_bug strs;          \
-  GET_THREAD()->errinfo = iseq->compile_data->err_info;  \
-  rb_compile_error strs;                           \
-  iseq->compile_data->err_info = GET_THREAD()->errinfo; \
-  GET_THREAD()->errinfo = tmp;                     \
-  ret = 0;                                         \
-  break;                                           \
+#if CPDEBUG > 0
+NORETURN(static void append_compile_error(const rb_iseq_t *iseq, int line, const char *fmt, ...));
+#endif
+
+static void
+append_compile_error(const rb_iseq_t *iseq, int line, const char *fmt, ...)
+{
+    VALUE err_info = ISEQ_COMPILE_DATA(iseq)->err_info;
+    VALUE file = rb_iseq_path(iseq);
+    VALUE err = err_info == Qtrue ? Qfalse : err_info;
+    va_list args;
+
+    va_start(args, fmt);
+    err = rb_syntax_error_append(err, file, line, -1, NULL, fmt, args);
+    va_end(args);
+    if (NIL_P(err_info)) {
+	RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, err);
+	rb_set_errinfo(err);
+    }
+    else if (!err_info) {
+	RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, Qtrue);
+    }
+    if (compile_debug) {
+        if (SPECIAL_CONST_P(err)) err = rb_eSyntaxError;
+        rb_exc_fatal(err);
+    }
 }
 
-#define ERROR_ARGS ruby_sourcefile, nd_line(node),
+#if 0
+static void
+compile_bug(rb_iseq_t *iseq, int line, const char *fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    rb_report_bug_valist(rb_iseq_path(iseq), line, fmt, args);
+    va_end(args);
+    abort();
+}
+#endif
+
+#define COMPILE_ERROR append_compile_error
 
+#define ERROR_ARGS_AT(n) iseq, nd_line(n),
+#define ERROR_ARGS ERROR_ARGS_AT(node)
+
+#define EXPECT_NODE(prefix, node, ndtype, errval) \
+do { \
+    const NODE *error_node = (node); \
+    enum node_type error_type = nd_type(error_node); \
+    if (error_type != (ndtype)) { \
+	COMPILE_ERROR(ERROR_ARGS_AT(error_node) \
+		      prefix ": " #ndtype " is expected, but %s", \
+		      ruby_node_name(error_type)); \
+	return errval; \
+    } \
+} while (0)
+
+#define EXPECT_NODE_NONULL(prefix, parent, ndtype, errval) \
+do { \
+    COMPILE_ERROR(ERROR_ARGS_AT(parent) \
+		  prefix ": must be " #ndtype ", but 0"); \
+    return errval; \
+} while (0)
+
+#define UNKNOWN_NODE(prefix, node, errval) \
+do { \
+    const NODE *error_node = (node); \
+    COMPILE_ERROR(ERROR_ARGS_AT(error_node) prefix ": unknown node (%s)", \
+		  ruby_node_name(nd_type(error_node))); \
+    return errval; \
+} while (0)
 
 #define COMPILE_OK 1
 #define COMPILE_NG 0
 
+#define CHECK(sub) if (!(sub)) {BEFORE_RETURN;return COMPILE_NG;}
+#define NO_CHECK(sub) (void)(sub)
+#define BEFORE_RETURN
 
 /* leave name uninitialized so that compiler warn if INIT_ANCHOR is
  * missing */
 #define DECL_ANCHOR(name) \
-  LINK_ANCHOR *name, name##_body__ = {{0,},}
+    LINK_ANCHOR name[1] = {{{ISEQ_ELEMENT_ANCHOR,},}}
 #define INIT_ANCHOR(name) \
-  (name##_body__.last = &name##_body__.anchor, name = &name##_body__)
+    (name->last = &name->anchor)
 
-#define hide_obj(obj) do {OBJ_FREEZE(obj); RBASIC(obj)->klass = 0;} while (0)
+static inline VALUE
+freeze_hide_obj(VALUE obj)
+{
+    OBJ_FREEZE(obj);
+    RBASIC_CLEAR_CLASS(obj);
+    return obj;
+}
 
 #include "optinsn.inc"
 #if OPT_INSTRUCTIONS_UNIFICATION
@@ -312,44 +460,45 @@ PRINTF_ARGS(void ruby_debug_printf(const char*, ...), 1, 2);
 #endif
 
 #if CPDEBUG
-#define gl_node_level iseq->compile_data->node_level
-#if 0
-static void debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor);
-#endif
+#define gl_node_level ISEQ_COMPILE_DATA(iseq)->node_level
 #endif
 
-static void dump_disasm_list(LINK_ELEMENT *elem);
+static void dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr, const LABEL *dest);
+static void dump_disasm_list(const LINK_ELEMENT *elem);
 
 static int insn_data_length(INSN *iobj);
-static int insn_data_line_no(INSN *iobj);
 static int calc_sp_depth(int depth, INSN *iobj);
 
-static void ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor, LINK_ELEMENT *elem);
-
-static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, int insn_id, int argc, ...);
-static LABEL *new_label_body(rb_iseq_t *iseq, int line);
+static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, enum ruby_vminsn_type insn_id, int argc, ...);
+static LABEL *new_label_body(rb_iseq_t *iseq, long line);
 static ADJUST *new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line);
+static TRACE *new_trace_body(rb_iseq_t *iseq, rb_event_flag_t event, long data);
 
-static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * n, int);
-static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
-static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
-static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
 
-static int iseq_set_local_table(rb_iseq_t *iseq, ID *tbl);
+static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, const NODE *n, int);
+static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
+static int iseq_setup_insn(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
+static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
+static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
+
+static int iseq_set_local_table(rb_iseq_t *iseq, const ID *tbl);
 static int iseq_set_exception_local_table(rb_iseq_t *iseq);
-static int iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * node);
+static int iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const anchor, const NODE *const node);
 
-static int iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
-static int iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
+static int iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
+static int iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
 static int iseq_set_exception_table(rb_iseq_t *iseq);
 static int iseq_set_optargs_table(rb_iseq_t *iseq);
 
+static int compile_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, VALUE needstr);
+static int compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int method_call_keywords, int popped);
+
 /*
  * To make Array to LinkedList, use link_anchor
  */
 
 static void
-verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *anchor)
+verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *const anchor)
 {
 #if CPDEBUG
     int flag = 0;
@@ -377,197 +526,494 @@ verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *anchor)
 #endif
 }
 #if CPDEBUG < 0
-#define verify_list(info, anchor) verify_list(iseq, info, anchor)
+#define verify_list(info, anchor) verify_list(iseq, (info), (anchor))
+#endif
+
+static void
+verify_call_cache(rb_iseq_t *iseq)
+{
+#if CPDEBUG
+    // fprintf(stderr, "ci_size:%d\t", iseq->body->ci_size); rp(iseq);
+
+    VALUE *original = rb_iseq_original_iseq(iseq);
+    size_t i = 0;
+    while (i < iseq->body->iseq_size) {
+        VALUE insn = original[i];
+        const char *types = insn_op_types(insn);
+
+        for (int j=0; types[j]; j++) {
+            if (types[j] == TS_CALLDATA) {
+                struct rb_call_data *cd = (struct rb_call_data *)original[i+j+1];
+                const struct rb_callinfo *ci = cd->ci;
+                const struct rb_callcache *cc = cd->cc;
+                if (cc != vm_cc_empty()) {
+                    vm_ci_dump(ci);
+                    rb_bug("call cache is not initialized by vm_cc_empty()");
+                }
+            }
+        }
+        i += insn_len(insn);
+    }
+
+    for (unsigned int i=0; i<iseq->body->ci_size; i++) {
+        struct rb_call_data *cd = &iseq->body->call_data[i];
+        const struct rb_callinfo *ci = cd->ci;
+        const struct rb_callcache *cc = cd->cc;
+        if (cc != NULL && cc != vm_cc_empty()) {
+            vm_ci_dump(ci);
+            rb_bug("call cache is not initialized by vm_cc_empty()");
+        }
+    }
 #endif
+}
 
 /*
  * elem1, elem2 => elem1, elem2, elem
  */
 static void
-ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor, LINK_ELEMENT *elem)
+ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *elem)
 {
     elem->prev = anchor->last;
     anchor->last->next = elem;
     anchor->last = elem;
     verify_list("add", anchor);
 }
+
+/*
+ * elem1, before, elem2 => elem1, before, elem, elem2
+ */
+static void
+APPEND_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *before, LINK_ELEMENT *elem)
+{
+    elem->prev = before;
+    elem->next = before->next;
+    elem->next->prev = elem;
+    before->next = elem;
+    if (before == anchor->last) anchor->last = elem;
+    verify_list("add", anchor);
+}
 #if CPDEBUG < 0
-#define ADD_ELEM(anchor, elem) ADD_ELEM(iseq, anchor, elem)
+#define ADD_ELEM(anchor, elem) ADD_ELEM(iseq, (anchor), (elem))
+#define APPEND_ELEM(anchor, before, elem) APPEND_ELEM(iseq, (anchor), (before), (elem))
 #endif
 
 static int
-iseq_add_mark_object(rb_iseq_t *iseq, VALUE v)
+branch_coverage_valid_p(rb_iseq_t *iseq, int first_line)
+{
+    if (!ISEQ_COVERAGE(iseq)) return 0;
+    if (!ISEQ_BRANCH_COVERAGE(iseq)) return 0;
+    if (first_line <= 0) return 0;
+    return 1;
+}
+
+static VALUE
+decl_branch_base(rb_iseq_t *iseq, const NODE *node, const char *type)
 {
-    if (!SPECIAL_CONST_P(v)) {
-	rb_ary_push(iseq->mark_ary, v);
+    const int first_lineno = nd_first_lineno(node), first_column = nd_first_column(node);
+    const int last_lineno = nd_last_lineno(node), last_column = nd_last_column(node);
+
+    if (!branch_coverage_valid_p(iseq, first_lineno)) return Qundef;
+
+    /*
+     * if !structure[node]
+     *   structure[node] = [type, first_lineno, first_column, last_lineno, last_column, branches = {}]
+     * else
+     *   branches = structure[node][5]
+     * end
+     */
+
+    VALUE structure = RARRAY_AREF(ISEQ_BRANCH_COVERAGE(iseq), 0);
+    VALUE key = (VALUE)node | 1; // FIXNUM for hash key
+    VALUE branch_base = rb_hash_aref(structure, key);
+    VALUE branches;
+
+    if (NIL_P(branch_base)) {
+        branch_base = rb_ary_tmp_new(6);
+        rb_hash_aset(structure, key, branch_base);
+        rb_ary_push(branch_base, ID2SYM(rb_intern(type)));
+        rb_ary_push(branch_base, INT2FIX(first_lineno));
+        rb_ary_push(branch_base, INT2FIX(first_column));
+        rb_ary_push(branch_base, INT2FIX(last_lineno));
+        rb_ary_push(branch_base, INT2FIX(last_column));
+        branches = rb_hash_new();
+        rb_obj_hide(branches);
+        rb_ary_push(branch_base, branches);
     }
-    return COMPILE_OK;
+    else {
+        branches = RARRAY_AREF(branch_base, 5);
+    }
+
+    return branches;
+}
+
+static void
+add_trace_branch_coverage(rb_iseq_t *iseq, LINK_ANCHOR *const seq, const NODE *node, int branch_id, const char *type, VALUE branches)
+{
+    const int first_lineno = nd_first_lineno(node), first_column = nd_first_column(node);
+    const int last_lineno = nd_last_lineno(node), last_column = nd_last_column(node);
+
+    if (!branch_coverage_valid_p(iseq, first_lineno)) return;
+
+    /*
+     * if !branches[branch_id]
+     *   branches[branch_id] = [type, first_lineno, first_column, last_lineno, last_column, counter_idx]
+     * else
+     *   counter_idx= branches[branch_id][5]
+     * end
+     */
+
+    VALUE key = INT2FIX(branch_id);
+    VALUE branch = rb_hash_aref(branches, key);
+    long counter_idx;
+
+    if (NIL_P(branch)) {
+        branch = rb_ary_tmp_new(6);
+        rb_hash_aset(branches, key, branch);
+        rb_ary_push(branch, ID2SYM(rb_intern(type)));
+        rb_ary_push(branch, INT2FIX(first_lineno));
+        rb_ary_push(branch, INT2FIX(first_column));
+        rb_ary_push(branch, INT2FIX(last_lineno));
+        rb_ary_push(branch, INT2FIX(last_column));
+        VALUE counters = RARRAY_AREF(ISEQ_BRANCH_COVERAGE(iseq), 1);
+        counter_idx = RARRAY_LEN(counters);
+        rb_ary_push(branch, LONG2FIX(counter_idx));
+        rb_ary_push(counters, INT2FIX(0));
+    }
+    else {
+        counter_idx = FIX2LONG(RARRAY_AREF(branch, 5));
+    }
+
+    ADD_TRACE_WITH_DATA(seq, RUBY_EVENT_COVERAGE_BRANCH, counter_idx);
+    ADD_INSN(seq, last_lineno, nop);
 }
 
-#define ruby_sourcefile		RSTRING_PTR(iseq->filename)
+#define ISEQ_LAST_LINE(iseq) (ISEQ_COMPILE_DATA(iseq)->last_line)
 
 static int
-iseq_add_mark_object_compile_time(rb_iseq_t *iseq, VALUE v)
+validate_label(st_data_t name, st_data_t label, st_data_t arg)
 {
-    if (!SPECIAL_CONST_P(v)) {
-	rb_ary_push(iseq->compile_data->mark_ary, v);
+    rb_iseq_t *iseq = (rb_iseq_t *)arg;
+    LABEL *lobj = (LABEL *)label;
+    if (!lobj->link.next) {
+	do {
+	    COMPILE_ERROR(iseq, lobj->position,
+			  "%"PRIsVALUE": undefined label",
+			  rb_sym2str((VALUE)name));
+	} while (0);
     }
-    return COMPILE_OK;
+    return ST_CONTINUE;
+}
+
+static void
+validate_labels(rb_iseq_t *iseq, st_table *labels_table)
+{
+    st_foreach(labels_table, validate_label, (st_data_t)iseq);
+    st_free_table(labels_table);
 }
 
 VALUE
-rb_iseq_compile_node(VALUE self, NODE *node)
+rb_iseq_compile_callback(rb_iseq_t *iseq, const struct rb_iseq_new_with_callback_callback_func * ifunc)
+{
+    DECL_ANCHOR(ret);
+    INIT_ANCHOR(ret);
+
+    (*ifunc->func)(iseq, ret, ifunc->data);
+
+    ADD_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, leave);
+
+    CHECK(iseq_setup_insn(iseq, ret));
+    return iseq_setup(iseq, ret);
+}
+
+VALUE
+rb_iseq_compile_node(rb_iseq_t *iseq, const NODE *node)
 {
     DECL_ANCHOR(ret);
-    rb_iseq_t *iseq;
     INIT_ANCHOR(ret);
-    GetISeqPtr(self, iseq);
+
+    if (IMEMO_TYPE_P(node, imemo_ifunc)) {
+        rb_raise(rb_eArgError, "unexpected imemo_ifunc");
+    }
 
     if (node == 0) {
-	COMPILE(ret, "nil", node);
+        NO_CHECK(COMPILE(ret, "nil", node));
 	iseq_set_local_table(iseq, 0);
     }
+    /* assume node is T_NODE */
     else if (nd_type(node) == NODE_SCOPE) {
 	/* iseq type of top, method, class, block */
 	iseq_set_local_table(iseq, node->nd_tbl);
 	iseq_set_arguments(iseq, ret, node->nd_args);
 
-	switch (iseq->type) {
-	  case ISEQ_TYPE_BLOCK: {
-	    LABEL *start = iseq->compile_data->start_label = NEW_LABEL(0);
-	    LABEL *end = iseq->compile_data->end_label = NEW_LABEL(0);
-
-	    ADD_LABEL(ret, start);
-	    COMPILE(ret, "block body", node->nd_body);
-	    ADD_LABEL(ret, end);
-
-	    /* wide range catch handler must put at last */
-	    ADD_CATCH_ENTRY(CATCH_TYPE_REDO, start, end, 0, start);
-	    ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, start, end, 0, end);
-	    break;
-	  }
-	  case ISEQ_TYPE_CLASS: {
-	    ADD_TRACE(ret, nd_line(node), RUBY_EVENT_CLASS);
-	    COMPILE(ret, "scoped node", node->nd_body);
-	    ADD_TRACE(ret, nd_line(node), RUBY_EVENT_END);
-	    break;
-	  }
-	  case ISEQ_TYPE_METHOD: {
-	    ADD_TRACE(ret, nd_line(node), RUBY_EVENT_CALL);
-	    COMPILE(ret, "scoped node", node->nd_body);
-	    ADD_TRACE(ret, nd_line(node), RUBY_EVENT_RETURN);
-	    break;
-	  }
+	switch (iseq->body->type) {
+	  case ISEQ_TYPE_BLOCK:
+	    {
+		LABEL *start = ISEQ_COMPILE_DATA(iseq)->start_label = NEW_LABEL(0);
+		LABEL *end = ISEQ_COMPILE_DATA(iseq)->end_label = NEW_LABEL(0);
+
+		start->rescued = LABEL_RESCUE_BEG;
+		end->rescued = LABEL_RESCUE_END;
+
+		ADD_TRACE(ret, RUBY_EVENT_B_CALL);
+		ADD_INSN (ret, FIX2INT(iseq->body->location.first_lineno), nop);
+		ADD_LABEL(ret, start);
+		CHECK(COMPILE(ret, "block body", node->nd_body));
+		ADD_LABEL(ret, end);
+		ADD_TRACE(ret, RUBY_EVENT_B_RETURN);
+		ISEQ_COMPILE_DATA(iseq)->last_line = iseq->body->location.code_location.end_pos.lineno;
+
+		/* wide range catch handler must put at last */
+		ADD_CATCH_ENTRY(CATCH_TYPE_REDO, start, end, NULL, start);
+		ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, start, end, NULL, end);
+		break;
+	    }
+	  case ISEQ_TYPE_CLASS:
+	    {
+		ADD_TRACE(ret, RUBY_EVENT_CLASS);
+		CHECK(COMPILE(ret, "scoped node", node->nd_body));
+		ADD_TRACE(ret, RUBY_EVENT_END);
+		ISEQ_COMPILE_DATA(iseq)->last_line = nd_line(node);
+		break;
+	    }
+	  case ISEQ_TYPE_METHOD:
+	    {
+		ADD_TRACE(ret, RUBY_EVENT_CALL);
+		CHECK(COMPILE(ret, "scoped node", node->nd_body));
+		ADD_TRACE(ret, RUBY_EVENT_RETURN);
+		ISEQ_COMPILE_DATA(iseq)->last_line = nd_line(node);
+		break;
+	    }
 	  default: {
-	    COMPILE(ret, "scoped node", node->nd_body);
+	    CHECK(COMPILE(ret, "scoped node", node->nd_body));
 	    break;
 	  }
 	}
     }
     else {
-	switch (iseq->type) {
-	  case ISEQ_TYPE_METHOD:
-	  case ISEQ_TYPE_CLASS:
-	  case ISEQ_TYPE_BLOCK:
-	  case ISEQ_TYPE_EVAL:
-	  case ISEQ_TYPE_MAIN:
-	  case ISEQ_TYPE_TOP:
-	    rb_compile_error(ERROR_ARGS "compile/should not be reached: %s:%d",
-			     __FILE__, __LINE__);
-	    break;
+	const char *m;
+#define INVALID_ISEQ_TYPE(type) \
+	ISEQ_TYPE_##type: m = #type; goto invalid_iseq_type
+	switch (iseq->body->type) {
+	  case INVALID_ISEQ_TYPE(METHOD);
+	  case INVALID_ISEQ_TYPE(CLASS);
+	  case INVALID_ISEQ_TYPE(BLOCK);
+	  case INVALID_ISEQ_TYPE(EVAL);
+	  case INVALID_ISEQ_TYPE(MAIN);
+	  case INVALID_ISEQ_TYPE(TOP);
+#undef INVALID_ISEQ_TYPE /* invalid iseq types end */
 	  case ISEQ_TYPE_RESCUE:
 	    iseq_set_exception_local_table(iseq);
-	    COMPILE(ret, "rescue", node);
+	    CHECK(COMPILE(ret, "rescue", node));
 	    break;
 	  case ISEQ_TYPE_ENSURE:
 	    iseq_set_exception_local_table(iseq);
-	    COMPILE_POPED(ret, "ensure", node);
+	    CHECK(COMPILE_POPPED(ret, "ensure", node));
 	    break;
-	  case ISEQ_TYPE_DEFINED_GUARD:
-	    iseq_set_local_table(iseq, 0);
-	    COMPILE(ret, "defined guard", node);
+	  case ISEQ_TYPE_PLAIN:
+	    CHECK(COMPILE(ret, "ensure", node));
 	    break;
 	  default:
-	    rb_bug("unknown scope");
+	    COMPILE_ERROR(ERROR_ARGS "unknown scope: %d", iseq->body->type);
+	    return COMPILE_NG;
+	  invalid_iseq_type:
+	    COMPILE_ERROR(ERROR_ARGS "compile/ISEQ_TYPE_%s should not be reached", m);
+	    return COMPILE_NG;
 	}
     }
 
-    if (iseq->type == ISEQ_TYPE_RESCUE || iseq->type == ISEQ_TYPE_ENSURE) {
-	ADD_INSN2(ret, 0, getdynamic, INT2FIX(2), INT2FIX(0));
+    if (iseq->body->type == ISEQ_TYPE_RESCUE || iseq->body->type == ISEQ_TYPE_ENSURE) {
+	ADD_GETLOCAL(ret, 0, LVAR_ERRINFO, 0);
 	ADD_INSN1(ret, 0, throw, INT2FIX(0) /* continue throw */ );
     }
     else {
-	ADD_INSN(ret, iseq->compile_data->last_line, leave);
+	ADD_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, leave);
     }
 
+#if OPT_SUPPORT_JOKE
+    if (ISEQ_COMPILE_DATA(iseq)->labels_table) {
+	st_table *labels_table = ISEQ_COMPILE_DATA(iseq)->labels_table;
+	ISEQ_COMPILE_DATA(iseq)->labels_table = 0;
+	validate_labels(iseq, labels_table);
+    }
+#endif
+    CHECK(iseq_setup_insn(iseq, ret));
     return iseq_setup(iseq, ret);
 }
 
-int
+static int
 rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
 {
 #if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
-    extern const void **rb_vm_get_insns_address_table(void);
-#if OPT_DIRECT_THREADED_CODE
     const void * const *table = rb_vm_get_insns_address_table();
-#else
-    const void * const *table = rb_vm_get_insns_address_table();
-#endif
-    int i;
+    unsigned int i;
+    VALUE *encoded = (VALUE *)iseq->body->iseq_encoded;
 
-    iseq->iseq_encoded = ALLOC_N(VALUE, iseq->iseq_size);
-    MEMCPY(iseq->iseq_encoded, iseq->iseq, VALUE, iseq->iseq_size);
-
-    for (i = 0; i < iseq->iseq_size; /* */ ) {
-	int insn = iseq->iseq_encoded[i];
+    for (i = 0; i < iseq->body->iseq_size; /* */ ) {
+	int insn = (int)iseq->body->iseq_encoded[i];
 	int len = insn_len(insn);
-	iseq->iseq_encoded[i] = (VALUE)table[insn];
+	encoded[i] = (VALUE)table[insn];
 	i += len;
     }
-#else
-    iseq->iseq_encoded = iseq->iseq;
+    FL_SET((VALUE)iseq, ISEQ_TRANSLATED);
 #endif
     return COMPILE_OK;
 }
 
+VALUE *
+rb_iseq_original_iseq(const rb_iseq_t *iseq) /* cold path */
+{
+    VALUE *original_code;
+
+    if (ISEQ_ORIGINAL_ISEQ(iseq)) return ISEQ_ORIGINAL_ISEQ(iseq);
+    original_code = ISEQ_ORIGINAL_ISEQ_ALLOC(iseq, iseq->body->iseq_size);
+    MEMCPY(original_code, iseq->body->iseq_encoded, VALUE, iseq->body->iseq_size);
+
+#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
+    {
+	unsigned int i;
+
+	for (i = 0; i < iseq->body->iseq_size; /* */ ) {
+	    const void *addr = (const void *)original_code[i];
+	    const int insn = rb_vm_insn_addr2insn(addr);
+
+	    original_code[i] = insn;
+	    i += insn_len(insn);
+	}
+    }
+#endif
+    return original_code;
+}
+
 /*********************************************/
 /* definition of data structure for compiler */
 /*********************************************/
 
+/*
+ * On 32-bit SPARC, GCC by default generates SPARC V7 code that may require
+ * 8-byte word alignment. On the other hand, Oracle Solaris Studio seems to
+ * generate SPARCV8PLUS code with unaligned memory access instructions.
+ * That is why the STRICT_ALIGNMENT is defined only with GCC.
+ */
+#if defined(__sparc) && SIZEOF_VOIDP == 4 && defined(__GNUC__)
+  #define STRICT_ALIGNMENT
+#endif
+
+/*
+ * Some OpenBSD platforms (including sparc64) require strict alignment.
+ */
+#if defined(__OpenBSD__)
+  #include <sys/endian.h>
+  #ifdef __STRICT_ALIGNMENT
+    #define STRICT_ALIGNMENT
+  #endif
+#endif
+
+#ifdef STRICT_ALIGNMENT
+  #if defined(HAVE_TRUE_LONG_LONG) && SIZEOF_LONG_LONG > SIZEOF_VALUE
+    #define ALIGNMENT_SIZE SIZEOF_LONG_LONG
+  #else
+    #define ALIGNMENT_SIZE SIZEOF_VALUE
+  #endif
+  #define PADDING_SIZE_MAX    ((size_t)((ALIGNMENT_SIZE) - 1))
+  #define ALIGNMENT_SIZE_MASK PADDING_SIZE_MAX
+  /* Note: ALIGNMENT_SIZE == (2 ** N) is expected. */
+#else
+  #define PADDING_SIZE_MAX 0
+#endif /* STRICT_ALIGNMENT */
+
+#ifdef STRICT_ALIGNMENT
+/* calculate padding size for aligned memory access */
+static size_t
+calc_padding(void *ptr, size_t size)
+{
+    size_t mis;
+    size_t padding = 0;
+
+    mis = (size_t)ptr & ALIGNMENT_SIZE_MASK;
+    if (mis > 0) {
+        padding = ALIGNMENT_SIZE - mis;
+    }
+/*
+ * On 32-bit sparc or equivalents, when a single VALUE is requested
+ * and padding == sizeof(VALUE), it is clear that no padding is needed.
+ */
+#if ALIGNMENT_SIZE > SIZEOF_VALUE
+    if (size == sizeof(VALUE) && padding == sizeof(VALUE)) {
+        padding = 0;
+    }
+#endif
+
+    return padding;
+}
+#endif /* STRICT_ALIGNMENT */
+
 static void *
-compile_data_alloc(rb_iseq_t *iseq, size_t size)
+compile_data_alloc_with_arena(struct iseq_compile_data_storage **arena, size_t size)
 {
     void *ptr = 0;
-    struct iseq_compile_data_storage *storage =
-	iseq->compile_data->storage_current;
+    struct iseq_compile_data_storage *storage = *arena;
+#ifdef STRICT_ALIGNMENT
+    size_t padding = calc_padding((void *)&storage->buff[storage->pos], size);
+#else
+    const size_t padding = 0; /* expected to be optimized by compiler */
+#endif /* STRICT_ALIGNMENT */
 
-    if (storage->pos + size > storage->size) {
-	unsigned long alloc_size = storage->size * 2;
+    if (size >= INT_MAX - padding) rb_memerror();
+    if (storage->pos + size + padding > storage->size) {
+	unsigned int alloc_size = storage->size;
 
-      retry:
-	if (alloc_size < size) {
+	while (alloc_size < size + PADDING_SIZE_MAX) {
+	    if (alloc_size >= INT_MAX / 2) rb_memerror();
 	    alloc_size *= 2;
-	    goto retry;
 	}
 	storage->next = (void *)ALLOC_N(char, alloc_size +
-					sizeof(struct
-					       iseq_compile_data_storage));
-	storage = iseq->compile_data->storage_current = storage->next;
+					offsetof(struct iseq_compile_data_storage, buff));
+	storage = *arena = storage->next;
 	storage->next = 0;
 	storage->pos = 0;
 	storage->size = alloc_size;
-	storage->buff = (char *)(&storage->buff + 1);
+#ifdef STRICT_ALIGNMENT
+        padding = calc_padding((void *)&storage->buff[storage->pos], size);
+#endif /* STRICT_ALIGNMENT */
     }
 
+#ifdef STRICT_ALIGNMENT
+    storage->pos += (int)padding;
+#endif /* STRICT_ALIGNMENT */
+
     ptr = (void *)&storage->buff[storage->pos];
-    storage->pos += size;
+    storage->pos += (int)size;
     return ptr;
 }
 
+static void *
+compile_data_alloc(rb_iseq_t *iseq, size_t size)
+{
+    struct iseq_compile_data_storage ** arena = &ISEQ_COMPILE_DATA(iseq)->node.storage_current;
+    return compile_data_alloc_with_arena(arena, size);
+}
+
+static inline void *
+compile_data_alloc2(rb_iseq_t *iseq, size_t x, size_t y)
+{
+    size_t size = rb_size_mul_or_raise(x, y, rb_eRuntimeError);
+    return compile_data_alloc(iseq, size);
+}
+
+static inline void *
+compile_data_calloc2(rb_iseq_t *iseq, size_t x, size_t y)
+{
+    size_t size = rb_size_mul_or_raise(x, y, rb_eRuntimeError);
+    void *p = compile_data_alloc(iseq, size);
+    memset(p, 0, size);
+    return p;
+}
+
 static INSN *
 compile_data_alloc_insn(rb_iseq_t *iseq)
 {
-    return (INSN *)compile_data_alloc(iseq, sizeof(INSN));
+    struct iseq_compile_data_storage ** arena = &ISEQ_COMPILE_DATA(iseq)->insn.storage_current;
+    return (INSN *)compile_data_alloc_with_arena(arena, sizeof(INSN));
 }
 
 static LABEL *
@@ -582,11 +1028,17 @@ compile_data_alloc_adjust(rb_iseq_t *iseq)
     return (ADJUST *)compile_data_alloc(iseq, sizeof(ADJUST));
 }
 
+static TRACE *
+compile_data_alloc_trace(rb_iseq_t *iseq)
+{
+    return (TRACE *)compile_data_alloc(iseq, sizeof(TRACE));
+}
+
 /*
  * elem1, elemX => elem1, elem2, elemX
  */
 static void
-INSERT_ELEM_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
+ELEM_INSERT_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
 {
     elem2->next = elem1->next;
     elem2->prev = elem1;
@@ -596,12 +1048,11 @@ INSERT_ELEM_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
     }
 }
 
-#if 0 /* unused */
 /*
- * elemX, elem1 => elemX, elem2, elem1
+ * elem1, elemX => elemX, elem2, elem1
  */
 static void
-INSERT_ELEM_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
+ELEM_INSERT_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
 {
     elem2->prev = elem1->prev;
     elem2->next = elem1;
@@ -610,13 +1061,12 @@ INSERT_ELEM_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
 	elem2->prev->next = elem2;
     }
 }
-#endif
 
 /*
  * elemX, elem1, elemY => elemX, elem2, elemY
  */
 static void
-REPLACE_ELEM(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
+ELEM_REPLACE(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
 {
     elem2->prev = elem1->prev;
     elem2->next = elem1->next;
@@ -629,7 +1079,7 @@ REPLACE_ELEM(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
 }
 
 static void
-REMOVE_ELEM(LINK_ELEMENT *elem)
+ELEM_REMOVE(LINK_ELEMENT *elem)
 {
     elem->prev->next = elem->next;
     if (elem->next) {
@@ -638,21 +1088,19 @@ REMOVE_ELEM(LINK_ELEMENT *elem)
 }
 
 static LINK_ELEMENT *
-FIRST_ELEMENT(LINK_ANCHOR *anchor)
+FIRST_ELEMENT(const LINK_ANCHOR *const anchor)
 {
     return anchor->anchor.next;
 }
 
-#if 0 /* unused */
 static LINK_ELEMENT *
-LAST_ELEMENT(LINK_ANCHOR *anchor)
+LAST_ELEMENT(LINK_ANCHOR *const anchor)
 {
-  return anchor->last;
+    return anchor->last;
 }
-#endif
 
 static LINK_ELEMENT *
-POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
+POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor)
 {
     LINK_ELEMENT *elem = anchor->last;
     anchor->last = anchor->last->prev;
@@ -661,43 +1109,45 @@ POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
     return elem;
 }
 #if CPDEBUG < 0
-#define POP_ELEMENT(anchor) POP_ELEMENT(iseq, anchor)
+#define POP_ELEMENT(anchor) POP_ELEMENT(iseq, (anchor))
 #endif
 
-#if 0 /* unused */
 static LINK_ELEMENT *
-SHIFT_ELEMENT(LINK_ANCHOR *anchor)
+ELEM_FIRST_INSN(LINK_ELEMENT *elem)
 {
-    LINK_ELEMENT *elem = anchor->anchor.next;
-    if (elem) {
-	anchor->anchor.next = elem->next;
+    while (elem) {
+	switch (elem->type) {
+	  case ISEQ_ELEMENT_INSN:
+	  case ISEQ_ELEMENT_ADJUST:
+	    return elem;
+	  default:
+	    elem = elem->next;
+	}
     }
-    return elem;
+    return NULL;
 }
-#endif
 
-#if 0 /* unused */
 static int
-LIST_SIZE(LINK_ANCHOR *anchor)
+LIST_INSN_SIZE_ONE(const LINK_ANCHOR *const anchor)
 {
-    LINK_ELEMENT *elem = anchor->anchor.next;
-    int size = 0;
-    while (elem) {
-	size += 1;
-	elem = elem->next;
+    LINK_ELEMENT *first_insn = ELEM_FIRST_INSN(FIRST_ELEMENT(anchor));
+    if (first_insn != NULL &&
+	ELEM_FIRST_INSN(first_insn->next) == NULL) {
+	return TRUE;
+    }
+    else {
+	return FALSE;
     }
-    return size;
 }
-#endif
 
 static int
-LIST_SIZE_ZERO(LINK_ANCHOR *anchor)
+LIST_INSN_SIZE_ZERO(const LINK_ANCHOR *const anchor)
 {
-    if (anchor->anchor.next == 0) {
-	return 1;
+    if (ELEM_FIRST_INSN(FIRST_ELEMENT(anchor)) == NULL) {
+	return TRUE;
     }
     else {
-	return 0;
+	return FALSE;
     }
 }
 
@@ -709,7 +1159,7 @@ LIST_SIZE_ZERO(LINK_ANCHOR *anchor)
  * anc2: e4, e5 (broken)
  */
 static void
-APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
+APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *const anc1, LINK_ANCHOR *const anc2)
 {
     if (anc2->anchor.next) {
 	anc1->last->next = anc2->anchor.next;
@@ -719,100 +1169,12 @@ APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
     verify_list("append", anc1);
 }
 #if CPDEBUG < 0
-#define APPEND_LIST(anc1, anc2) APPEND_LIST(iseq, anc1, anc2)
-#endif
-
-/*
- * anc1: e1, e2, e3
- * anc2: e4, e5
- *#=>
- * anc1: e4, e5, e1, e2, e3
- * anc2: e4, e5 (broken)
- */
-static void
-INSERT_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
-{
-    if (anc2->anchor.next) {
-	LINK_ELEMENT *first = anc1->anchor.next;
-	anc1->anchor.next = anc2->anchor.next;
-	anc1->anchor.next->prev = &anc1->anchor;
-	anc2->last->next = first;
-	if (first) {
-	    first->prev = anc2->last;
-	}
-	else {
-	    anc1->last = anc2->last;
-	}
-    }
-
-    verify_list("append", anc1);
-}
-#if CPDEBUG < 0
-#define INSERT_LIST(anc1, anc2) INSERT_LIST(iseq, anc1, anc2)
-#endif
-
-#if 0 /* unused */
-/*
- * anc1: e1, e2, e3
- * anc2: e4, e5
- *#=>
- * anc1: e4, e5
- * anc2: e1, e2, e3
- */
-static void
-SWAP_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
-{
-    LINK_ANCHOR tmp = *anc2;
-
-    /* it has bug */
-    *anc2 = *anc1;
-    *anc1 = tmp;
-
-    verify_list("swap1", anc1);
-    verify_list("swap2", anc2);
-}
-#if CPDEBUG < 0
-#define SWAP_LIST(anc1, anc2) SWAP_LIST(iseq, anc1, anc2)
-#endif
-
-static LINK_ANCHOR *
-REVERSE_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc)
-{
-    LINK_ELEMENT *first, *last, *elem, *e;
-    first = &anc->anchor;
-    elem = first->next;
-    last = anc->last;
-
-    if (elem != 0) {
-	anc->anchor.next = last;
-	anc->last = elem;
-    }
-    else {
-	/* null list */
-	return anc;
-    }
-    while (elem) {
-	e = elem->next;
-	elem->next = elem->prev;
-	elem->prev = e;
-	elem = e;
-    }
-
-    first->next = last;
-    last->prev = first;
-    anc->last->next = 0;
-
-    verify_list("reverse", anc);
-    return anc;
-}
-#if CPDEBUG < 0
-#define REVERSE_LIST(anc) REVERSE_LIST(iseq, anc)
-#endif
+#define APPEND_LIST(anc1, anc2) APPEND_LIST(iseq, (anc1), (anc2))
 #endif
 
 #if CPDEBUG && 0
 static void
-debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
+debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *cur)
 {
     LINK_ELEMENT *list = FIRST_ELEMENT(anchor);
     printf("----\n");
@@ -820,30 +1182,49 @@ debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
 	   anchor->anchor.next, anchor->last);
     while (list) {
 	printf("curr: %p, next: %p, prev: %p, type: %d\n", list, list->next,
-	       list->prev, FIX2INT(list->type));
+	       list->prev, (int)list->type);
 	list = list->next;
     }
     printf("----\n");
 
-    dump_disasm_list(anchor->anchor.next);
+    dump_disasm_list_with_cursor(anchor->anchor.next, cur, 0);
     verify_list("debug list", anchor);
 }
 #if CPDEBUG < 0
-#define debug_list(anc) debug_list(iseq, anc)
+#define debug_list(anc, cur) debug_list(iseq, (anc), (cur))
 #endif
+#else
+#define debug_list(anc, cur) ((void)0)
 #endif
 
+static TRACE *
+new_trace_body(rb_iseq_t *iseq, rb_event_flag_t event, long data)
+{
+    TRACE *trace = compile_data_alloc_trace(iseq);
+
+    trace->link.type = ISEQ_ELEMENT_TRACE;
+    trace->link.next = NULL;
+    trace->event = event;
+    trace->data = data;
+
+    return trace;
+}
+
 static LABEL *
-new_label_body(rb_iseq_t *iseq, int line)
+new_label_body(rb_iseq_t *iseq, long line)
 {
     LABEL *labelobj = compile_data_alloc_label(iseq);
 
     labelobj->link.type = ISEQ_ELEMENT_LABEL;
     labelobj->link.next = 0;
 
-    labelobj->label_no = iseq->compile_data->label_no++;
+    labelobj->label_no = ISEQ_COMPILE_DATA(iseq)->label_no++;
     labelobj->sc_state = 0;
     labelobj->sp = -1;
+    labelobj->refcnt = 0;
+    labelobj->set = 0;
+    labelobj->rescued = LABEL_RESCUE_NONE;
+    labelobj->unremovable = 0;
     return labelobj;
 }
 
@@ -855,6 +1236,7 @@ new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line)
     adjust->link.next = 0;
     adjust->label = label;
     adjust->line_no = line;
+    LABEL_UNREMOVABLE(label);
     return adjust;
 }
 
@@ -864,10 +1246,13 @@ new_insn_core(rb_iseq_t *iseq, int line_no,
 {
     INSN *iobj = compile_data_alloc_insn(iseq);
 
+    /* printf("insn_id: %d, line: %d\n", insn_id, line_no); */
+
     iobj->link.type = ISEQ_ELEMENT_INSN;
     iobj->link.next = 0;
     iobj->insn_id = insn_id;
-    iobj->line_no = line_no;
+    iobj->insn_info.line_no = line_no;
+    iobj->insn_info.events = 0;
     iobj->operands = argv;
     iobj->operand_size = argc;
     iobj->sc_state = 0;
@@ -875,14 +1260,14 @@ new_insn_core(rb_iseq_t *iseq, int line_no,
 }
 
 static INSN *
-new_insn_body(rb_iseq_t *iseq, int line_no, int insn_id, int argc, ...)
+new_insn_body(rb_iseq_t *iseq, int line_no, enum ruby_vminsn_type insn_id, int argc, ...)
 {
     VALUE *operands = 0;
     va_list argv;
     if (argc > 0) {
 	int i;
-	va_init_list(argv, argc);
-	operands = (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * argc);
+        va_start(argv, argc);
+        operands = compile_data_alloc2(iseq, sizeof(VALUE), argc);
 	for (i = 0; i < argc; i++) {
 	    VALUE v = va_arg(argv, VALUE);
 	    operands[i] = v;
@@ -892,39 +1277,163 @@ new_insn_body(rb_iseq_t *iseq, int line_no, int insn_id, int argc, ...)
     return new_insn_core(iseq, line_no, insn_id, argc, operands);
 }
 
+static const struct rb_callinfo *
+new_callinfo(rb_iseq_t *iseq, ID mid, int argc, unsigned int flag, struct rb_callinfo_kwarg *kw_arg, int has_blockiseq)
+{
+    VM_ASSERT(argc >= 0);
+
+    if (!(flag & (VM_CALL_ARGS_SPLAT | VM_CALL_ARGS_BLOCKARG | VM_CALL_KW_SPLAT)) &&
+        kw_arg == NULL && !has_blockiseq) {
+        flag |= VM_CALL_ARGS_SIMPLE;
+    }
+
+    if (kw_arg) {
+        flag |= VM_CALL_KWARG;
+        argc += kw_arg->keyword_len;
+    }
+
+    // fprintf(stderr, "[%d] id:%s\t", (int)iseq->body->ci_size, rb_id2name(mid)); rp(iseq);
+    iseq->body->ci_size++;
+    const struct rb_callinfo *ci = vm_ci_new(mid, flag, argc, kw_arg);
+    RB_OBJ_WRITTEN(iseq, Qundef, ci);
+    return ci;
+}
+
 static INSN *
-new_insn_send(rb_iseq_t *iseq, int line_no,
-	      VALUE id, VALUE argc, VALUE block, VALUE flag)
+new_insn_send(rb_iseq_t *iseq, int line_no, ID id, VALUE argc, const rb_iseq_t *blockiseq, VALUE flag, struct rb_callinfo_kwarg *keywords)
 {
-    INSN *iobj = 0;
-    VALUE *operands =
-      (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * 5);
-    operands[0] = id;
-    operands[1] = argc;
-    operands[2] = block;
-    operands[3] = flag;
-    operands[4] = 0;
-    iobj = new_insn_core(iseq, line_no, BIN(send), 5, operands);
-    return iobj;
+    VALUE *operands = compile_data_calloc2(iseq, sizeof(VALUE), 2);
+    VALUE ci = (VALUE)new_callinfo(iseq, id, FIX2INT(argc), FIX2INT(flag), keywords, blockiseq != NULL);
+    operands[0] = ci;
+    operands[1] = (VALUE)blockiseq;
+    if (blockiseq) {
+        RB_OBJ_WRITTEN(iseq, Qundef, blockiseq);
+    }
+    INSN *insn = new_insn_core(iseq, line_no, BIN(send), 2, operands);
+    RB_OBJ_WRITTEN(iseq, Qundef, ci);
+    RB_GC_GUARD(ci);
+    return insn;
 }
 
-static VALUE
-new_child_iseq(rb_iseq_t *iseq, NODE *node,
-	       VALUE name, VALUE parent, VALUE type)
+static rb_iseq_t *
+new_child_iseq(rb_iseq_t *iseq, const NODE *const node,
+	       VALUE name, const rb_iseq_t *parent, enum iseq_type type, int line_no)
 {
-    VALUE ret;
+    rb_iseq_t *ret_iseq;
+    rb_ast_body_t ast;
+
+    ast.root = node;
+    ast.compile_option = 0;
+    ast.line_count = -1;
 
     debugs("[new_child_iseq]> ---------------------------------------\n");
-    ret = rb_iseq_new_with_opt(node, name, iseq_filename(iseq->self),
-			       parent, type, iseq->compile_data->option);
+    int isolated_depth = ISEQ_COMPILE_DATA(iseq)->isolated_depth;
+    ret_iseq = rb_iseq_new_with_opt(&ast, name,
+				    rb_iseq_path(iseq), rb_iseq_realpath(iseq),
+                                    INT2FIX(line_no), parent,
+                                    isolated_depth ? isolated_depth + 1 : 0,
+                                    type, ISEQ_COMPILE_DATA(iseq)->option);
     debugs("[new_child_iseq]< ---------------------------------------\n");
-    iseq_add_mark_object(iseq, ret);
-    return ret;
+    return ret_iseq;
+}
+
+static rb_iseq_t *
+new_child_iseq_with_callback(rb_iseq_t *iseq, const struct rb_iseq_new_with_callback_callback_func *ifunc,
+		     VALUE name, const rb_iseq_t *parent, enum iseq_type type, int line_no)
+{
+    rb_iseq_t *ret_iseq;
+
+    debugs("[new_child_iseq_with_callback]> ---------------------------------------\n");
+    ret_iseq = rb_iseq_new_with_callback(ifunc, name,
+				 rb_iseq_path(iseq), rb_iseq_realpath(iseq),
+				 INT2FIX(line_no), parent, type, ISEQ_COMPILE_DATA(iseq)->option);
+    debugs("[new_child_iseq_with_callback]< ---------------------------------------\n");
+    return ret_iseq;
+}
+
+static void
+set_catch_except_p(struct rb_iseq_constant_body *body)
+{
+    body->catch_except_p = TRUE;
+    if (body->parent_iseq != NULL) {
+        set_catch_except_p(body->parent_iseq->body);
+    }
+}
+
+/* Set body->catch_except_p to TRUE if the ISeq may catch an exception. If it is FALSE,
+   JIT-ed code may be optimized.  If we are extremely conservative, we should set TRUE
+   if catch table exists.  But we want to optimize while loop, which always has catch
+   table entries for break/next/redo.
+
+   So this function sets TRUE for limited ISeqs with break/next/redo catch table entries
+   whose child ISeq would really raise an exception. */
+static void
+update_catch_except_flags(struct rb_iseq_constant_body *body)
+{
+    unsigned int pos;
+    size_t i;
+    int insn;
+    const struct iseq_catch_table *ct = body->catch_table;
+
+    /* This assumes that a block has parent_iseq which may catch an exception from the block, and that
+       BREAK/NEXT/REDO catch table entries are used only when `throw` insn is used in the block. */
+    pos = 0;
+    while (pos < body->iseq_size) {
+#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
+        insn = rb_vm_insn_addr2insn((void *)body->iseq_encoded[pos]);
+#else
+        insn = (int)body->iseq_encoded[pos];
+#endif
+        if (insn == BIN(throw)) {
+            set_catch_except_p(body);
+            break;
+        }
+        pos += insn_len(insn);
+    }
+
+    if (ct == NULL)
+        return;
+
+    for (i = 0; i < ct->size; i++) {
+        const struct iseq_catch_table_entry *entry =
+            UNALIGNED_MEMBER_PTR(ct, entries[i]);
+        if (entry->type != CATCH_TYPE_BREAK
+            && entry->type != CATCH_TYPE_NEXT
+            && entry->type != CATCH_TYPE_REDO) {
+            body->catch_except_p = TRUE;
+            break;
+        }
+    }
+}
+
+static void
+iseq_insert_nop_between_end_and_cont(rb_iseq_t *iseq)
+{
+    VALUE catch_table_ary = ISEQ_COMPILE_DATA(iseq)->catch_table_ary;
+    if (NIL_P(catch_table_ary)) return;
+    unsigned int i, tlen = (unsigned int)RARRAY_LEN(catch_table_ary);
+    const VALUE *tptr = RARRAY_CONST_PTR_TRANSIENT(catch_table_ary);
+    for (i = 0; i < tlen; i++) {
+        const VALUE *ptr = RARRAY_CONST_PTR_TRANSIENT(tptr[i]);
+        LINK_ELEMENT *end = (LINK_ELEMENT *)(ptr[2] & ~1);
+        LINK_ELEMENT *cont = (LINK_ELEMENT *)(ptr[4] & ~1);
+        LINK_ELEMENT *e;
+        for (e = end; e && (IS_LABEL(e) || IS_TRACE(e)); e = e->next) {
+            if (e == cont) {
+                INSN *nop = new_insn_core(iseq, 0, BIN(nop), 0, 0);
+                ELEM_INSERT_NEXT(end, &nop->link);
+                break;
+            }
+        }
+    }
 }
 
 static int
-iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
+iseq_setup_insn(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 {
+    if (RTEST(ISEQ_COMPILE_DATA(iseq)->err_info))
+	return COMPILE_NG;
+
     /* debugs("[compile step 2] (iseq_array_to_linkedlist)\n"); */
 
     if (compile_debug > 5)
@@ -936,166 +1445,403 @@ iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
     if (compile_debug > 5)
 	dump_disasm_list(FIRST_ELEMENT(anchor));
 
-    if (iseq->compile_data->option->instructions_unification) {
+    if (ISEQ_COMPILE_DATA(iseq)->option->instructions_unification) {
 	debugs("[compile step 3.2 (iseq_insns_unification)]\n");
 	iseq_insns_unification(iseq, anchor);
 	if (compile_debug > 5)
 	    dump_disasm_list(FIRST_ELEMENT(anchor));
     }
 
-    if (iseq->compile_data->option->stack_caching) {
+    if (ISEQ_COMPILE_DATA(iseq)->option->stack_caching) {
 	debugs("[compile step 3.3 (iseq_set_sequence_stackcaching)]\n");
 	iseq_set_sequence_stackcaching(iseq, anchor);
 	if (compile_debug > 5)
 	    dump_disasm_list(FIRST_ELEMENT(anchor));
     }
 
+    debugs("[compile step 3.4 (iseq_insert_nop_between_end_and_cont)]\n");
+    iseq_insert_nop_between_end_and_cont(iseq);
+    if (compile_debug > 5)
+        dump_disasm_list(FIRST_ELEMENT(anchor));
+
+    return COMPILE_OK;
+}
+
+static int
+iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
+{
+    if (RTEST(ISEQ_COMPILE_DATA(iseq)->err_info))
+        return COMPILE_NG;
+
     debugs("[compile step 4.1 (iseq_set_sequence)]\n");
-    iseq_set_sequence(iseq, anchor);
+    if (!iseq_set_sequence(iseq, anchor)) return COMPILE_NG;
     if (compile_debug > 5)
 	dump_disasm_list(FIRST_ELEMENT(anchor));
 
     debugs("[compile step 4.2 (iseq_set_exception_table)]\n");
-    iseq_set_exception_table(iseq);
+    if (!iseq_set_exception_table(iseq)) return COMPILE_NG;
 
     debugs("[compile step 4.3 (set_optargs_table)] \n");
-    iseq_set_optargs_table(iseq);
+    if (!iseq_set_optargs_table(iseq)) return COMPILE_NG;
 
     debugs("[compile step 5 (iseq_translate_threaded_code)] \n");
-    rb_iseq_translate_threaded_code(iseq);
+    if (!rb_iseq_translate_threaded_code(iseq)) return COMPILE_NG;
+
+    debugs("[compile step 6 (update_catch_except_flags)] \n");
+    update_catch_except_flags(iseq->body);
+
+#if VM_INSN_INFO_TABLE_IMPL == 2
+    if (iseq->body->insns_info.succ_index_table == NULL) {
+        debugs("[compile step 7 (rb_iseq_insns_info_encode_positions)] \n");
+        rb_iseq_insns_info_encode_positions(iseq);
+    }
+#endif
 
     if (compile_debug > 1) {
-	VALUE str = rb_iseq_disasm(iseq->self);
+	VALUE str = rb_iseq_disasm(iseq);
 	printf("%s\n", StringValueCStr(str));
-	fflush(stdout);
     }
+    verify_call_cache(iseq);
     debugs("[compile step: finish]\n");
 
-    return 0;
+    return COMPILE_OK;
 }
 
 static int
 iseq_set_exception_local_table(rb_iseq_t *iseq)
 {
-    ID id_dollar_bang;
-
-    CONST_ID(id_dollar_bang, "#$!");
-    iseq->local_table = (ID *)ALLOC_N(ID *, 1);
-    iseq->local_table_size = 1;
-    iseq->local_size = iseq->local_table_size + 1;
-    iseq->local_table[0] = id_dollar_bang;
+    iseq->body->local_table_size = numberof(rb_iseq_shared_exc_local_tbl);
+    iseq->body->local_table = rb_iseq_shared_exc_local_tbl;
     return COMPILE_OK;
 }
 
 static int
-get_dyna_var_idx_at_raw(rb_iseq_t *iseq, ID id)
+get_lvar_level(const rb_iseq_t *iseq)
 {
-    int i;
+    int lev = 0;
+    while (iseq != iseq->body->local_iseq) {
+	lev++;
+	iseq = iseq->body->parent_iseq;
+    }
+    return lev;
+}
+
+static int
+get_dyna_var_idx_at_raw(const rb_iseq_t *iseq, ID id)
+{
+    unsigned int i;
 
-    for (i = 0; i < iseq->local_table_size; i++) {
-	if (iseq->local_table[i] == id) {
-	    return i;
+    for (i = 0; i < iseq->body->local_table_size; i++) {
+	if (iseq->body->local_table[i] == id) {
+	    return (int)i;
 	}
     }
     return -1;
 }
 
 static int
-get_local_var_idx(rb_iseq_t *iseq, ID id)
+get_local_var_idx(const rb_iseq_t *iseq, ID id)
 {
-    int idx = get_dyna_var_idx_at_raw(iseq->local_iseq, id);
+    int idx = get_dyna_var_idx_at_raw(iseq->body->local_iseq, id);
 
     if (idx < 0) {
-	rb_bug("get_local_var_idx: %d", idx);
+        COMPILE_ERROR(iseq, ISEQ_LAST_LINE(iseq),
+                      "get_local_var_idx: %d", idx);
     }
 
     return idx;
 }
 
 static int
-get_dyna_var_idx(rb_iseq_t *iseq, ID id, int *level, int *ls)
+get_dyna_var_idx(const rb_iseq_t *iseq, ID id, int *level, int *ls)
 {
     int lv = 0, idx = -1;
+    const rb_iseq_t *const topmost_iseq = iseq;
 
     while (iseq) {
 	idx = get_dyna_var_idx_at_raw(iseq, id);
 	if (idx >= 0) {
 	    break;
 	}
-	iseq = iseq->parent_iseq;
+	iseq = iseq->body->parent_iseq;
 	lv++;
     }
 
     if (idx < 0) {
-	rb_bug("get_dyna_var_idx: -1");
+        COMPILE_ERROR(topmost_iseq, ISEQ_LAST_LINE(topmost_iseq),
+                      "get_dyna_var_idx: -1");
     }
 
     *level = lv;
-    *ls = iseq->local_size;
+    *ls = iseq->body->local_table_size;
     return idx;
 }
 
 static int
-iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *optargs, NODE *node_args)
+iseq_local_block_param_p(const rb_iseq_t *iseq, unsigned int idx, unsigned int level)
 {
-    debugs("iseq_set_arguments: %s\n", node_args ? "" : "0");
+    const struct rb_iseq_constant_body *body;
+    while (level > 0) {
+	iseq = iseq->body->parent_iseq;
+	level--;
+    }
+    body = iseq->body;
+    if (body->local_iseq == iseq && /* local variables */
+	body->param.flags.has_block &&
+	body->local_table_size - body->param.block_start == idx) {
+	return TRUE;
+    }
+    else {
+	return FALSE;
+    }
+}
 
-    if (node_args) {
-	NODE *node_aux = node_args->nd_next;
-	NODE *node_opt = node_args->nd_opt;
-	ID rest_id = 0;
-	int last_comma = 0;
-	ID block_id = 0;
-	NODE *node_init = 0;
+static int
+iseq_block_param_id_p(const rb_iseq_t *iseq, ID id, int *pidx, int *plevel)
+{
+    int level, ls;
+    int idx = get_dyna_var_idx(iseq, id, &level, &ls);
+    if (iseq_local_block_param_p(iseq, ls - idx, level)) {
+	*pidx = ls - idx;
+	*plevel = level;
+	return TRUE;
+    }
+    else {
+	return FALSE;
+    }
+}
+
+static void
+access_outer_variables(const rb_iseq_t *iseq, int level, ID id, bool write)
+{
+    int isolated_depth = ISEQ_COMPILE_DATA(iseq)->isolated_depth;
+
+    if (isolated_depth && level >= isolated_depth) {
+        if (id == rb_intern("yield")) {
+            COMPILE_ERROR(iseq, ISEQ_LAST_LINE(iseq), "can not yield from isolated Proc", rb_id2name(id));
+        }
+        else {
+            COMPILE_ERROR(iseq, ISEQ_LAST_LINE(iseq), "can not access variable `%s' from isolated Proc", rb_id2name(id));
+        }
+    }
+
+    for (int i=0; i<level; i++) {
+        VALUE val;
+        struct rb_id_table *ovs = iseq->body->outer_variables;
+
+        if (!ovs) {
+            ovs = iseq->body->outer_variables = rb_id_table_create(8);
+        }
+
+        if (rb_id_table_lookup(iseq->body->outer_variables, id, &val)) {
+            if (write && !val) {
+                rb_id_table_insert(iseq->body->outer_variables, id, Qtrue);
+            }
+        }
+        else {
+            rb_id_table_insert(iseq->body->outer_variables, id, write ? Qtrue : Qfalse);
+        }
+
+        iseq = iseq->body->parent_iseq;
+    }
+}
+
+static ID
+iseq_lvar_id(const rb_iseq_t *iseq, int idx, int level)
+{
+    for (int i=0; i<level; i++) {
+        iseq = iseq->body->parent_iseq;
+    }
+
+    ID id = iseq->body->local_table[iseq->body->local_table_size - idx];
+    // fprintf(stderr, "idx:%d level:%d ID:%s\n", idx, level, rb_id2name(id));
+    return id;
+}
 
-	if (nd_type(node_args) != NODE_ARGS) {
-	    rb_bug("iseq_set_arguments: NODE_ARGS is expected, but %s",
-		   ruby_node_name(nd_type(node_args)));
+static void
+iseq_add_getlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level)
+{
+    if (iseq_local_block_param_p(iseq, idx, level)) {
+	ADD_INSN2(seq, line, getblockparam, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
+    }
+    else {
+	ADD_INSN2(seq, line, getlocal, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
+    }
+    if (level > 0) access_outer_variables(iseq, level, iseq_lvar_id(iseq, idx, level), Qfalse);
+}
+
+static void
+iseq_add_setlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level)
+{
+    if (iseq_local_block_param_p(iseq, idx, level)) {
+	ADD_INSN2(seq, line, setblockparam, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
+    }
+    else {
+	ADD_INSN2(seq, line, setlocal, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
+    }
+    if (level > 0) access_outer_variables(iseq, level, iseq_lvar_id(iseq, idx, level), Qtrue);
+}
+
+
+
+static void
+iseq_calc_param_size(rb_iseq_t *iseq)
+{
+    struct rb_iseq_constant_body *const body = iseq->body;
+    if (body->param.flags.has_opt ||
+	body->param.flags.has_post ||
+	body->param.flags.has_rest ||
+	body->param.flags.has_block ||
+	body->param.flags.has_kw ||
+	body->param.flags.has_kwrest) {
+
+	if (body->param.flags.has_block) {
+	    body->param.size = body->param.block_start + 1;
+	}
+	else if (body->param.flags.has_kwrest) {
+	    body->param.size = body->param.keyword->rest_start + 1;
+	}
+	else if (body->param.flags.has_kw) {
+	    body->param.size = body->param.keyword->bits_start + 1;
+	}
+	else if (body->param.flags.has_post) {
+	    body->param.size = body->param.post_start + body->param.post_num;
 	}
+	else if (body->param.flags.has_rest) {
+	    body->param.size = body->param.rest_start + 1;
+	}
+	else if (body->param.flags.has_opt) {
+	    body->param.size = body->param.lead_num + body->param.opt_num;
+	}
+	else {
+            UNREACHABLE;
+	}
+    }
+    else {
+	body->param.size = body->param.lead_num;
+    }
+}
 
-	/*
-         * new argument infromation:
-         *   NODE_ARGS     [m: int,  o: NODE_OPT_ARG, ->]
-         *   NODE_ARGS_AUX [r: ID,   b: ID,           ->]
-         *   NODE_ARGS_AUX [Pst: id, Plen: int,       init: NODE*]
-         *  optarg information:
-         *   NODE_OPT_ARGS [idx,     expr,            next ->]
-	 *  init arg:
-	 *   NODE_AND(m_init, p_init)
-	 *  if "r" is 1, it's means "{|x,|}" type block parameter.
-	 */
+static int
+iseq_set_arguments_keywords(rb_iseq_t *iseq, LINK_ANCHOR *const optargs,
+			    const struct rb_args_info *args, int arg_size)
+{
+    const NODE *node = args->kw_args;
+    struct rb_iseq_constant_body *const body = iseq->body;
+    struct rb_iseq_param_keyword *keyword;
+    const VALUE default_values = rb_ary_tmp_new(1);
+    const VALUE complex_mark = rb_str_tmp_new(0);
+    int kw = 0, rkw = 0, di = 0, i;
+
+    body->param.flags.has_kw = TRUE;
+    body->param.keyword = keyword = ZALLOC_N(struct rb_iseq_param_keyword, 1);
+
+    while (node) {
+	kw++;
+	node = node->nd_next;
+    }
+    arg_size += kw;
+    keyword->bits_start = arg_size++;
 
-	iseq->argc = node_args->nd_frml;
-	debugs("  - argc: %d\n", iseq->argc);
+    node = args->kw_args;
+    while (node) {
+	const NODE *val_node = node->nd_body->nd_value;
+	VALUE dv;
 
-	if (node_aux) {
-	    rest_id = node_aux->nd_rest;
-	    if (rest_id == 1) {
-		last_comma = 1;
-		rest_id = 0;
+        if (val_node == NODE_SPECIAL_REQUIRED_KEYWORD) {
+	    ++rkw;
+	}
+	else {
+	    switch (nd_type(val_node)) {
+	      case NODE_LIT:
+		dv = val_node->nd_lit;
+		break;
+	      case NODE_NIL:
+		dv = Qnil;
+		break;
+	      case NODE_TRUE:
+		dv = Qtrue;
+		break;
+	      case NODE_FALSE:
+		dv = Qfalse;
+		break;
+	      default:
+                NO_CHECK(COMPILE_POPPED(optargs, "kwarg", node)); /* nd_type(node) == NODE_KW_ARG */
+		dv = complex_mark;
 	    }
-	    block_id = (ID)node_aux->nd_body;
-	    node_aux = node_aux->nd_next;
 
-	    if (node_aux) {
-		ID post_start_id = node_aux->nd_pid;
-		iseq->arg_post_start = get_dyna_var_idx_at_raw(iseq, post_start_id);
-		iseq->arg_post_len = node_aux->nd_plen;
-		node_init = node_aux->nd_next;
+	    keyword->num = ++di;
+	    rb_ary_push(default_values, dv);
+	}
+
+	node = node->nd_next;
+    }
+
+    keyword->num = kw;
+
+    if (args->kw_rest_arg->nd_vid != 0) {
+	keyword->rest_start = arg_size++;
+	body->param.flags.has_kwrest = TRUE;
+    }
+    keyword->required_num = rkw;
+    keyword->table = &body->local_table[keyword->bits_start - keyword->num];
+
+    {
+	VALUE *dvs = ALLOC_N(VALUE, RARRAY_LEN(default_values));
+
+	for (i = 0; i < RARRAY_LEN(default_values); i++) {
+	    VALUE dv = RARRAY_AREF(default_values, i);
+	    if (dv == complex_mark) dv = Qundef;
+	    if (!SPECIAL_CONST_P(dv)) {
+		RB_OBJ_WRITTEN(iseq, Qundef, dv);
 	    }
+	    dvs[i] = dv;
+	}
+
+	keyword->default_values = dvs;
+    }
+    return arg_size;
+}
+
+static int
+iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *const node_args)
+{
+    debugs("iseq_set_arguments: %s\n", node_args ? "" : "0");
+
+    if (node_args) {
+	struct rb_iseq_constant_body *const body = iseq->body;
+	struct rb_args_info *args = node_args->nd_ainfo;
+	ID rest_id = 0;
+	int last_comma = 0;
+	ID block_id = 0;
+	int arg_size;
+
+	EXPECT_NODE("iseq_set_arguments", node_args, NODE_ARGS, COMPILE_NG);
+
+        body->param.flags.ruby2_keywords = args->ruby2_keywords;
+	body->param.lead_num = arg_size = (int)args->pre_args_num;
+	if (body->param.lead_num > 0) body->param.flags.has_lead = TRUE;
+	debugs("  - argc: %d\n", body->param.lead_num);
+
+	rest_id = args->rest_arg;
+        if (rest_id == NODE_SPECIAL_EXCESSIVE_COMMA) {
+	    last_comma = 1;
+	    rest_id = 0;
 	}
+	block_id = args->block_arg;
 
-	if (node_opt) {
-	    NODE *node = node_opt;
+	if (args->opt_args) {
+	    const NODE *node = args->opt_args;
 	    LABEL *label;
-	    VALUE labels = rb_ary_new();
+	    VALUE labels = rb_ary_tmp_new(1);
+	    VALUE *opt_table;
 	    int i = 0, j;
 
 	    while (node) {
 		label = NEW_LABEL(nd_line(node));
 		rb_ary_push(labels, (VALUE)label | 1);
 		ADD_LABEL(optargs, label);
-		COMPILE_POPED(optargs, "optarg", node->nd_body);
+                NO_CHECK(COMPILE_POPPED(optargs, "optarg", node->nd_body));
 		node = node->nd_next;
 		i += 1;
 	    }
@@ -1104,93 +1850,91 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *optargs, NODE *node_args)
 	    label = NEW_LABEL(nd_line(node_args));
 	    rb_ary_push(labels, (VALUE)label | 1);
 	    ADD_LABEL(optargs, label);
-	    i += 1;
 
-	    iseq->arg_opts = i;
-	    iseq->arg_opt_table = ALLOC_N(VALUE, i);
-	    MEMCPY(iseq->arg_opt_table, RARRAY_PTR(labels), VALUE, i);
-	    for (j = 0; j < i; j++) {
-		iseq->arg_opt_table[j] &= ~1;
-	    }
-	}
-	else {
-	    iseq->arg_opts = 0;
-	}
+	    opt_table = ALLOC_N(VALUE, i+1);
 
-	if (node_init) {
-	    if (node_init->nd_1st) { /* m_init */
-		COMPILE_POPED(optargs, "init arguments (m)", node_init->nd_1st);
-	    }
-	    if (node_init->nd_2nd) { /* p_init */
-		COMPILE_POPED(optargs, "init arguments (p)", node_init->nd_2nd);
+            MEMCPY(opt_table, RARRAY_CONST_PTR_TRANSIENT(labels), VALUE, i+1);
+	    for (j = 0; j < i+1; j++) {
+		opt_table[j] &= ~1;
 	    }
+	    rb_ary_clear(labels);
+
+	    body->param.flags.has_opt = TRUE;
+	    body->param.opt_num = i;
+	    body->param.opt_table = opt_table;
+	    arg_size += i;
 	}
 
 	if (rest_id) {
-	    iseq->arg_rest = get_dyna_var_idx_at_raw(iseq, rest_id);
+	    body->param.rest_start = arg_size++;
+	    body->param.flags.has_rest = TRUE;
+	    assert(body->param.rest_start != -1);
+	}
 
-	    if (iseq->arg_rest == -1) {
-		rb_bug("arg_rest: -1");
-	    }
+	if (args->first_post_arg) {
+	    body->param.post_start = arg_size;
+	    body->param.post_num = args->post_args_num;
+	    body->param.flags.has_post = TRUE;
+	    arg_size += args->post_args_num;
 
-	    if (iseq->arg_post_start == 0) {
-		iseq->arg_post_start = iseq->arg_rest + 1;
+	    if (body->param.flags.has_rest) { /* TODO: why that? */
+		body->param.post_start = body->param.rest_start + 1;
 	    }
 	}
 
+	if (args->kw_args) {
+	    arg_size = iseq_set_arguments_keywords(iseq, optargs, args, arg_size);
+	}
+	else if (args->kw_rest_arg) {
+	    struct rb_iseq_param_keyword *keyword = ZALLOC_N(struct rb_iseq_param_keyword, 1);
+	    keyword->rest_start = arg_size++;
+	    body->param.keyword = keyword;
+	    body->param.flags.has_kwrest = TRUE;
+	}
+	else if (args->no_kwarg) {
+	    body->param.flags.accepts_no_kwarg = TRUE;
+	}
+
 	if (block_id) {
-	    iseq->arg_block = get_dyna_var_idx_at_raw(iseq, block_id);
+	    body->param.block_start = arg_size++;
+	    body->param.flags.has_block = TRUE;
 	}
 
-	if (iseq->arg_opts != 0 || iseq->arg_post_len != 0 ||
-	    iseq->arg_rest != -1 || iseq->arg_block != -1) {
-	    iseq->arg_simple = 0;
+	iseq_calc_param_size(iseq);
+	body->param.size = arg_size;
 
-	    /* set arg_size: size of arguments */
-	    if (iseq->arg_block != -1) {
-		iseq->arg_size = iseq->arg_block + 1;
-	    }
-	    else if (iseq->arg_post_len) {
-		iseq->arg_size = iseq->arg_post_start + iseq->arg_post_len;
-	    }
-	    else if (iseq->arg_rest != -1) {
-		iseq->arg_size = iseq->arg_rest + 1;
-	    }
-	    else if (iseq->arg_opts) {
-		iseq->arg_size = iseq->argc + iseq->arg_opts - 1;
-	    }
-	    else {
-		iseq->arg_size = iseq->argc;
-	    }
+	if (args->pre_init) { /* m_init */
+            NO_CHECK(COMPILE_POPPED(optargs, "init arguments (m)", args->pre_init));
 	}
-	else {
-	    iseq->arg_simple = 1;
-	    iseq->arg_size = iseq->argc;
+	if (args->post_init) { /* p_init */
+            NO_CHECK(COMPILE_POPPED(optargs, "init arguments (p)", args->post_init));
 	}
 
-	if (iseq->type == ISEQ_TYPE_BLOCK) {
-	    if (iseq->arg_opts == 0 && iseq->arg_post_len == 0 && iseq->arg_rest == -1) {
-		if (iseq->argc == 1 && last_comma == 0) {
+	if (body->type == ISEQ_TYPE_BLOCK) {
+	    if (body->param.flags.has_opt    == FALSE &&
+		body->param.flags.has_post   == FALSE &&
+		body->param.flags.has_rest   == FALSE &&
+		body->param.flags.has_kw     == FALSE &&
+		body->param.flags.has_kwrest == FALSE) {
+
+		if (body->param.lead_num == 1 && last_comma == 0) {
 		    /* {|a|} */
-		    iseq->arg_simple |= 0x02;
+		    body->param.flags.ambiguous_param0 = TRUE;
 		}
 	    }
 	}
     }
-    else {
-	iseq->arg_simple = 1;
-    }
 
     return COMPILE_OK;
 }
 
 static int
-iseq_set_local_table(rb_iseq_t *iseq, ID *tbl)
+iseq_set_local_table(rb_iseq_t *iseq, const ID *tbl)
 {
-    int size;
+    unsigned int size;
 
     if (tbl) {
-	size = *tbl;
+	size = (unsigned int)*tbl;
 	tbl++;
     }
     else {
@@ -1198,48 +1942,84 @@ iseq_set_local_table(rb_iseq_t *iseq, ID *tbl)
     }
 
     if (size > 0) {
-	iseq->local_table = (ID *)ALLOC_N(ID *, size);
-	MEMCPY(iseq->local_table, tbl, ID *, size);
+	ID *ids = (ID *)ALLOC_N(ID, size);
+	MEMCPY(ids, tbl, ID, size);
+	iseq->body->local_table = ids;
     }
+    iseq->body->local_table_size = size;
 
-    iseq->local_size = iseq->local_table_size = size;
-    iseq->local_size += 1;
-    /*
-      if (lfp == dfp ) { // top, class, method
-	  dfp[-1]: svar
-      else {             // block
-          dfp[-1]: cref
-      }
-     */
-
-    debugs("iseq_set_local_table: %d, %d\n", iseq->local_size, iseq->local_table_size);
+    debugs("iseq_set_local_table: %u\n", iseq->body->local_table_size);
     return COMPILE_OK;
 }
 
 static int
 cdhash_cmp(VALUE val, VALUE lit)
 {
-    if (val == lit) return 0;
-    if (SPECIAL_CONST_P(lit)) {
-	return val != lit;
+    int tval, tlit;
+
+    if (val == lit) {
+        return 0;
+    }
+    else if ((tlit = OBJ_BUILTIN_TYPE(lit)) == -1) {
+        return val != lit;
+    }
+    else if ((tval = OBJ_BUILTIN_TYPE(val)) == -1) {
+        return -1;
+    }
+    else if (tlit != tval) {
+        return -1;
+    }
+    else if (tlit == T_SYMBOL) {
+        return val != lit;
+    }
+    else if (tlit == T_STRING) {
+        return rb_str_hash_cmp(lit, val);
+    }
+    else if (tlit == T_BIGNUM) {
+        long x = FIX2LONG(rb_big_cmp(lit, val));
+
+        /* Given lit and val are both Bignum, x must be -1, 0, 1.
+         * There is no need to call rb_fix2int here. */
+        RUBY_ASSERT((x == 1) || (x == 0) || (x == -1));
+        return (int)x;
+    }
+    else if (tlit == T_FLOAT) {
+        return rb_float_cmp(lit, val);
+    }
+    else if (tlit == T_RATIONAL) {
+        const struct RRational *rat1 = RRATIONAL(val);
+        const struct RRational *rat2 = RRATIONAL(lit);
+        return cdhash_cmp(rat1->num, rat2->num) || cdhash_cmp(rat1->den, rat2->den);
     }
-    if (SPECIAL_CONST_P(val) || BUILTIN_TYPE(val) != BUILTIN_TYPE(lit)) {
-	return -1;
+    else if (tlit == T_COMPLEX) {
+        const struct RComplex *comp1 = RCOMPLEX(val);
+        const struct RComplex *comp2 = RCOMPLEX(lit);
+        return cdhash_cmp(comp1->real, comp2->real) || cdhash_cmp(comp1->imag, comp2->imag);
     }
-    if (BUILTIN_TYPE(lit) == T_STRING) {
-	return rb_str_hash_cmp(lit, val);
+    else {
+        UNREACHABLE_RETURN(-1);
     }
-    return !rb_eql(lit, val);
 }
 
-static int
+static st_index_t
 cdhash_hash(VALUE a)
 {
-    if (SPECIAL_CONST_P(a)) return (int)a;
-    if (TYPE(a) == T_STRING) return rb_str_hash(a);
-    {
-	VALUE hval = rb_hash(a);
-	return (int)FIX2LONG(hval);
+    switch (OBJ_BUILTIN_TYPE(a)) {
+      case -1:
+      case T_SYMBOL:
+        return (st_index_t)a;
+      case T_STRING:
+        return rb_str_hash(a);
+      case T_BIGNUM:
+        return FIX2LONG(rb_big_hash(a));
+      case T_FLOAT:
+        return rb_dbl_long_hash(RFLOAT_VALUE(a));
+      case T_RATIONAL:
+        return rb_rational_hash(a);
+      case T_COMPLEX:
+        return rb_complex_hash(a);
+      default:
+        UNREACHABLE_RETURN(0);
     }
 }
 
@@ -1248,70 +2028,294 @@ static const struct st_hash_type cdhash_type = {
     cdhash_hash,
 };
 
+struct cdhash_set_label_struct {
+    VALUE hash;
+    int pos;
+    int len;
+};
+
+static int
+cdhash_set_label_i(VALUE key, VALUE val, VALUE ptr)
+{
+    struct cdhash_set_label_struct *data = (struct cdhash_set_label_struct *)ptr;
+    LABEL *lobj = (LABEL *)(val & ~1);
+    rb_hash_aset(data->hash, key, INT2FIX(lobj->position - (data->pos+data->len)));
+    return ST_CONTINUE;
+}
+
+
+static inline VALUE
+get_ivar_ic_value(rb_iseq_t *iseq,ID id)
+{
+    VALUE val;
+    struct rb_id_table *tbl = ISEQ_COMPILE_DATA(iseq)->ivar_cache_table;
+    if (tbl) {
+	if (rb_id_table_lookup(tbl,id,&val)) {
+	    return val;
+	}
+    }
+    else {
+	tbl = rb_id_table_create(1);
+	ISEQ_COMPILE_DATA(iseq)->ivar_cache_table = tbl;
+    }
+    val = INT2FIX(iseq->body->is_size++);
+    rb_id_table_insert(tbl,id,val);
+    return val;
+}
+
+#define BADINSN_DUMP(anchor, list, dest) \
+    dump_disasm_list_with_cursor(FIRST_ELEMENT(anchor), list, dest)
+
+#define BADINSN_ERROR \
+    (xfree(generated_iseq), \
+     xfree(insns_info), \
+     BADINSN_DUMP(anchor, list, NULL), \
+     COMPILE_ERROR)
+
+static int
+fix_sp_depth(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
+{
+    int stack_max = 0, sp = 0, line = 0;
+    LINK_ELEMENT *list;
+
+    for (list = FIRST_ELEMENT(anchor); list; list = list->next) {
+	if (list->type == ISEQ_ELEMENT_LABEL) {
+	    LABEL *lobj = (LABEL *)list;
+	    lobj->set = TRUE;
+	}
+    }
+
+    for (list = FIRST_ELEMENT(anchor); list; list = list->next) {
+	switch (list->type) {
+	  case ISEQ_ELEMENT_INSN:
+	    {
+		int j, len, insn;
+		const char *types;
+		VALUE *operands;
+		INSN *iobj = (INSN *)list;
+
+		/* update sp */
+		sp = calc_sp_depth(sp, iobj);
+		if (sp < 0) {
+		    BADINSN_DUMP(anchor, list, NULL);
+		    COMPILE_ERROR(iseq, iobj->insn_info.line_no,
+				  "argument stack underflow (%d)", sp);
+		    return -1;
+		}
+		if (sp > stack_max) {
+		    stack_max = sp;
+		}
+
+		line = iobj->insn_info.line_no;
+		/* fprintf(stderr, "insn: %-16s, sp: %d\n", insn_name(iobj->insn_id), sp); */
+		operands = iobj->operands;
+		insn = iobj->insn_id;
+		types = insn_op_types(insn);
+		len = insn_len(insn);
+
+		/* operand check */
+		if (iobj->operand_size != len - 1) {
+		    /* printf("operand size miss! (%d, %d)\n", iobj->operand_size, len); */
+		    BADINSN_DUMP(anchor, list, NULL);
+		    COMPILE_ERROR(iseq, iobj->insn_info.line_no,
+				  "operand size miss! (%d for %d)",
+				  iobj->operand_size, len - 1);
+		    return -1;
+		}
+
+		for (j = 0; types[j]; j++) {
+		    if (types[j] == TS_OFFSET) {
+			/* label(destination position) */
+			LABEL *lobj = (LABEL *)operands[j];
+			if (!lobj->set) {
+			    BADINSN_DUMP(anchor, list, NULL);
+			    COMPILE_ERROR(iseq, iobj->insn_info.line_no,
+					  "unknown label: "LABEL_FORMAT, lobj->label_no);
+			    return -1;
+			}
+			if (lobj->sp == -1) {
+			    lobj->sp = sp;
+                        } else if (lobj->sp != sp) {
+                            debugs("%s:%d: sp inconsistency found but ignored (" LABEL_FORMAT " sp: %d, calculated sp: %d)\n",
+                                   RSTRING_PTR(rb_iseq_path(iseq)), line,
+                                   lobj->label_no, lobj->sp, sp);
+                        }
+		    }
+		}
+		break;
+	    }
+	  case ISEQ_ELEMENT_LABEL:
+	    {
+		LABEL *lobj = (LABEL *)list;
+		if (lobj->sp == -1) {
+		    lobj->sp = sp;
+		}
+		else {
+                    if (lobj->sp != sp) {
+                        debugs("%s:%d: sp inconsistency found but ignored (" LABEL_FORMAT " sp: %d, calculated sp: %d)\n",
+                                RSTRING_PTR(rb_iseq_path(iseq)), line,
+                                lobj->label_no, lobj->sp, sp);
+                    }
+		    sp = lobj->sp;
+		}
+		break;
+	    }
+	  case ISEQ_ELEMENT_TRACE:
+	    {
+		/* ignore */
+		break;
+	    }
+	  case ISEQ_ELEMENT_ADJUST:
+	    {
+		ADJUST *adjust = (ADJUST *)list;
+		int orig_sp = sp;
+
+		sp = adjust->label ? adjust->label->sp : 0;
+		if (adjust->line_no != -1 && orig_sp - sp < 0) {
+		    BADINSN_DUMP(anchor, list, NULL);
+		    COMPILE_ERROR(iseq, adjust->line_no,
+				  "iseq_set_sequence: adjust bug %d < %d",
+				  orig_sp, sp);
+		    return -1;
+		}
+		break;
+	    }
+	  default:
+	    BADINSN_DUMP(anchor, list, NULL);
+	    COMPILE_ERROR(iseq, line, "unknown list type: %d", list->type);
+	    return -1;
+	}
+    }
+    return stack_max;
+}
+
+static int
+add_insn_info(struct iseq_insn_info_entry *insns_info, unsigned int *positions,
+              int insns_info_index, int code_index, const INSN *iobj)
+{
+    if (insns_info_index == 0 ||
+        insns_info[insns_info_index-1].line_no != iobj->insn_info.line_no ||
+        insns_info[insns_info_index-1].events  != iobj->insn_info.events) {
+        insns_info[insns_info_index].line_no    = iobj->insn_info.line_no;
+        insns_info[insns_info_index].events     = iobj->insn_info.events;
+        positions[insns_info_index]             = code_index;
+        return TRUE;
+    }
+    return FALSE;
+}
+
+static int
+add_adjust_info(struct iseq_insn_info_entry *insns_info, unsigned int *positions,
+                int insns_info_index, int code_index, const ADJUST *adjust)
+{
+    if (insns_info_index > 0 ||
+        insns_info[insns_info_index-1].line_no != adjust->line_no) {
+        insns_info[insns_info_index].line_no    = adjust->line_no;
+        insns_info[insns_info_index].events     = 0;
+        positions[insns_info_index]             = code_index;
+        return TRUE;
+    }
+    return FALSE;
+}
+
 /**
-  ruby insn object array -> raw instruction sequence
+  ruby insn object list -> raw instruction sequence
  */
 static int
-iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
+iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 {
-    LABEL *lobj;
-    INSN *iobj;
-    struct iseq_insn_info_entry *insn_info_table;
+    VALUE iseqv = (VALUE)iseq;
+    struct iseq_insn_info_entry *insns_info;
+    struct rb_iseq_constant_body *const body = iseq->body;
+    unsigned int *positions;
     LINK_ELEMENT *list;
     VALUE *generated_iseq;
+    rb_event_flag_t events = 0;
+    long data = 0;
 
-    int k, pos, sp, stack_max = 0, line = 0;
+    int insn_num, code_index, insns_info_index, sp = 0;
+    int stack_max = fix_sp_depth(iseq, anchor);
 
-    /* set label position */
-    list = FIRST_ELEMENT(anchor);
-    k = pos = 0;
-    while (list) {
+    if (stack_max < 0) return COMPILE_NG;
+
+    /* fix label position */
+    insn_num = code_index = 0;
+    for (list = FIRST_ELEMENT(anchor); list; list = list->next) {
 	switch (list->type) {
 	  case ISEQ_ELEMENT_INSN:
 	    {
-		iobj = (INSN *)list;
-		line = iobj->line_no;
-		pos += insn_data_length(iobj);
-		k++;
+		INSN *iobj = (INSN *)list;
+		/* update sp */
+		sp = calc_sp_depth(sp, iobj);
+		insn_num++;
+                events = iobj->insn_info.events |= events;
+                if (ISEQ_COVERAGE(iseq)) {
+                    if (ISEQ_LINE_COVERAGE(iseq) && (events & RUBY_EVENT_COVERAGE_LINE) &&
+                        !(rb_get_coverage_mode() & COVERAGE_TARGET_ONESHOT_LINES)) {
+                        int line = iobj->insn_info.line_no;
+                        if (line >= 1) {
+                            RARRAY_ASET(ISEQ_LINE_COVERAGE(iseq), line - 1, INT2FIX(0));
+                        }
+                    }
+                    if (ISEQ_BRANCH_COVERAGE(iseq) && (events & RUBY_EVENT_COVERAGE_BRANCH)) {
+                        while (RARRAY_LEN(ISEQ_PC2BRANCHINDEX(iseq)) <= code_index) {
+                            rb_ary_push(ISEQ_PC2BRANCHINDEX(iseq), Qnil);
+                        }
+                        RARRAY_ASET(ISEQ_PC2BRANCHINDEX(iseq), code_index, INT2FIX(data));
+                    }
+		}
+                code_index += insn_data_length(iobj);
+		events = 0;
+                data = 0;
 		break;
 	    }
 	  case ISEQ_ELEMENT_LABEL:
 	    {
-		lobj = (LABEL *)list;
-		lobj->position = pos;
-		lobj->set = Qtrue;
+		LABEL *lobj = (LABEL *)list;
+		lobj->position = code_index;
+                if (lobj->sp != sp) {
+                    debugs("%s: sp inconsistency found but ignored (" LABEL_FORMAT " sp: %d, calculated sp: %d)\n",
+                           RSTRING_PTR(rb_iseq_path(iseq)),
+                           lobj->label_no, lobj->sp, sp);
+                }
+		sp = lobj->sp;
 		break;
 	    }
-	  case ISEQ_ELEMENT_NONE:
+	  case ISEQ_ELEMENT_TRACE:
 	    {
-		/* ignore */
+		TRACE *trace = (TRACE *)list;
+		events |= trace->event;
+                if (trace->event & RUBY_EVENT_COVERAGE_BRANCH) data = trace->data;
 		break;
 	    }
 	  case ISEQ_ELEMENT_ADJUST:
 	    {
 		ADJUST *adjust = (ADJUST *)list;
 		if (adjust->line_no != -1) {
-		    pos += 2 /* insn + 1 operand */;
-		    k++;
+		    int orig_sp = sp;
+		    sp = adjust->label ? adjust->label->sp : 0;
+		    if (orig_sp - sp > 0) {
+			if (orig_sp - sp > 1) code_index++; /* 1 operand */
+			code_index++; /* insn */
+			insn_num++;
+		    }
 		}
 		break;
 	    }
-	  default:
-	    dump_disasm_list(FIRST_ELEMENT(anchor));
-	    dump_disasm_list(list);
-	    rb_compile_error(RSTRING_PTR(iseq->filename), line,
-			     "error: set_sequence");
-	    break;
+	  default: break;
 	}
-	list = list->next;
     }
 
     /* make instruction sequence */
-    generated_iseq = ALLOC_N(VALUE, pos);
-    insn_info_table = ALLOC_N(struct iseq_insn_info_entry, k);
+    generated_iseq = ALLOC_N(VALUE, code_index);
+    insns_info = ALLOC_N(struct iseq_insn_info_entry, insn_num);
+    positions = ALLOC_N(unsigned int, insn_num);
+    body->is_entries = ZALLOC_N(union iseq_inline_storage_entry, body->is_size);
+    body->call_data = ZALLOC_N(struct rb_call_data, body->ci_size);
+    ISEQ_COMPILE_DATA(iseq)->ci_index = 0;
 
     list = FIRST_ELEMENT(anchor);
-    k = pos = sp = 0;
+    insns_info_index = code_index = sp = 0;
 
     while (list) {
 	switch (list->type) {
@@ -1320,34 +2324,17 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 		int j, len, insn;
 		const char *types;
 		VALUE *operands;
-
-		iobj = (INSN *)list;
+		INSN *iobj = (INSN *)list;
 
 		/* update sp */
 		sp = calc_sp_depth(sp, iobj);
-		if (sp > stack_max) {
-		    stack_max = sp;
-		}
-
 		/* fprintf(stderr, "insn: %-16s, sp: %d\n", insn_name(iobj->insn_id), sp); */
-
 		operands = iobj->operands;
 		insn = iobj->insn_id;
-		generated_iseq[pos] = insn;
+		generated_iseq[code_index] = insn;
 		types = insn_op_types(insn);
 		len = insn_len(insn);
 
-		/* operand check */
-		if (iobj->operand_size != len - 1) {
-		    dump_disasm_list(list);
-		    rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
-				     "operand size miss! (%d for %d)",
-				     iobj->operand_size, len - 1);
-		    xfree(generated_iseq);
-		    xfree(insn_info_table);
-		    return 0;
-		}
-
 		for (j = 0; types[j]; j++) {
 		    char type = types[j];
 		    /* printf("--> [%c - (%d-%d)]\n", type, k, j); */
@@ -1355,113 +2342,96 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 		      case TS_OFFSET:
 			{
 			    /* label(destination position) */
-			    lobj = (LABEL *)operands[j];
-			    if (lobj->set != Qtrue) {
-				rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
-						 "unknown label");
-			    }
-			    if (lobj->sp == -1) {
-				lobj->sp = sp;
-			    }
-			    generated_iseq[pos + 1 + j] =
-				lobj->position - (pos + len);
+			    LABEL *lobj = (LABEL *)operands[j];
+			    generated_iseq[code_index + 1 + j] = lobj->position - (code_index + len);
 			    break;
 			}
 		      case TS_CDHASH:
 			{
-			    /*
-			     * [obj, label, ...]
-			     */
-			    int i;
-			    VALUE lits = operands[j];
-			    VALUE map = rb_hash_new();
-			    RHASH_TBL(map)->type = &cdhash_type;
-
-			    for (i=0; i < RARRAY_LEN(lits); i+=2) {
-				VALUE obj = rb_ary_entry(lits, i);
-				VALUE lv  = rb_ary_entry(lits, i+1);
-				lobj = (LABEL *)(lv & ~1);
-
-				if (lobj->set != Qtrue) {
-				    rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
-						     "unknown label");
-				}
-				if (!st_lookup(rb_hash_tbl(map), obj, 0)) {
-				    rb_hash_aset(map, obj, INT2FIX(lobj->position - (pos+len)));
-				}
-				else {
-				    rb_compile_warning(RSTRING_PTR(iseq->filename), iobj->line_no,
-						       "duplicated when clause is ignored");
-				}
-			    }
-			    generated_iseq[pos + 1 + j] = map;
-			    iseq_add_mark_object(iseq, map);
+			    VALUE map = operands[j];
+			    struct cdhash_set_label_struct data;
+                            data.hash = map;
+                            data.pos = code_index;
+                            data.len = len;
+			    rb_hash_foreach(map, cdhash_set_label_i, (VALUE)&data);
+
+			    rb_hash_rehash(map);
+			    freeze_hide_obj(map);
+			    generated_iseq[code_index + 1 + j] = map;
+			    RB_OBJ_WRITTEN(iseq, Qundef, map);
+                            FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
 			    break;
 			}
 		      case TS_LINDEX:
-		      case TS_DINDEX:
 		      case TS_NUM:	/* ulong */
-			generated_iseq[pos + 1 + j] = FIX2INT(operands[j]);
+			generated_iseq[code_index + 1 + j] = FIX2INT(operands[j]);
 			break;
-		      case TS_ISEQ:	/* iseq */
-			{
-			    VALUE v = operands[j];
-			    rb_iseq_t *block = 0;
-			    if (v) {
-				GetISeqPtr(v, block);
-			    }
-			    generated_iseq[pos + 1 + j] = (VALUE)block;
-			    break;
-			}
 		      case TS_VALUE:	/* VALUE */
+		      case TS_ISEQ:	/* iseq */
 			{
 			    VALUE v = operands[j];
-			    generated_iseq[pos + 1 + j] = v;
+			    generated_iseq[code_index + 1 + j] = v;
 			    /* to mark ruby object */
-			    iseq_add_mark_object(iseq, v);
+			    if (!SPECIAL_CONST_P(v)) {
+				RB_OBJ_WRITTEN(iseq, Qundef, v);
+                                FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
+			    }
 			    break;
 			}
 		      case TS_IC: /* inline cache */
+		      case TS_ISE: /* inline storage entry */
+		      case TS_IVC: /* inline ivar cache */
 			{
-			    VALUE v = (VALUE)NEW_INLINE_CACHE_ENTRY();
-			    generated_iseq[pos + 1 + j] = v;
-			    iseq_add_mark_object(iseq, v);
+			    unsigned int ic_index = FIX2UINT(operands[j]);
+			    IC ic = (IC)&body->is_entries[ic_index];
+			    if (UNLIKELY(ic_index >= body->is_size)) {
+                                BADINSN_DUMP(anchor, &iobj->link, 0);
+                                COMPILE_ERROR(iseq, iobj->insn_info.line_no,
+                                              "iseq_set_sequence: ic_index overflow: index: %d, size: %d",
+                                              ic_index, body->is_size);
+			    }
+			    generated_iseq[code_index + 1 + j] = (VALUE)ic;
+                            FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
 			    break;
 			}
+                        case TS_CALLDATA:
+                        {
+                            const struct rb_callinfo *source_ci = (const struct rb_callinfo *)operands[j];
+                            struct rb_call_data *cd = &body->call_data[ISEQ_COMPILE_DATA(iseq)->ci_index++];
+                            assert(ISEQ_COMPILE_DATA(iseq)->ci_index <= body->ci_size);
+                            cd->ci = source_ci;
+                            cd->cc = vm_cc_empty();
+                            generated_iseq[code_index + 1 + j] = (VALUE)cd;
+                            break;
+                        }
 		      case TS_ID: /* ID */
-			generated_iseq[pos + 1 + j] = SYM2ID(operands[j]);
+			generated_iseq[code_index + 1 + j] = SYM2ID(operands[j]);
 			break;
-		      case TS_GENTRY:
-			{
-			    struct global_entry *entry =
-				(struct global_entry *)(operands[j] & (~1));
-			    generated_iseq[pos + 1 + j] = (VALUE)entry;
-			}
+		      case TS_FUNCPTR:
+			generated_iseq[code_index + 1 + j] = operands[j];
 			break;
+                      case TS_BUILTIN:
+                        generated_iseq[code_index + 1 + j] = operands[j];
+                        break;
 		      default:
-			rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
-					 "unknown operand type: %c", type);
-			xfree(generated_iseq);
-			xfree(insn_info_table);
-			return 0;
+			BADINSN_ERROR(iseq, iobj->insn_info.line_no,
+				      "unknown operand type: %c", type);
+			return COMPILE_NG;
 		    }
 		}
-		insn_info_table[k].line_no = iobj->line_no;
-		insn_info_table[k].position = pos;
-		insn_info_table[k].sp = sp;
-		pos += len;
-		k++;
+		if (add_insn_info(insns_info, positions, insns_info_index, code_index, iobj)) insns_info_index++;
+		code_index += len;
 		break;
 	    }
 	  case ISEQ_ELEMENT_LABEL:
 	    {
-		lobj = (LABEL *)list;
-		if (lobj->sp == -1) {
-		    lobj->sp = sp;
-		}
-		else {
-		    sp = lobj->sp;
-		}
+		LABEL *lobj = (LABEL *)list;
+                if (lobj->sp != sp) {
+                    debugs("%s: sp inconsistency found but ignored (" LABEL_FORMAT " sp: %d, calculated sp: %d)\n",
+                           RSTRING_PTR(rb_iseq_path(iseq)),
+                           lobj->label_no, lobj->sp, sp);
+                }
+		sp = lobj->sp;
 		break;
 	    }
 	  case ISEQ_ELEMENT_ADJUST:
@@ -1477,25 +2447,27 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 		}
 
 		if (adjust->line_no != -1) {
-		    if (orig_sp - sp > 0) {
-			insn_info_table[k].line_no = adjust->line_no;
-			insn_info_table[k].position = pos;
-			insn_info_table[k].sp = sp;
-			k++;
-			generated_iseq[pos++] = BIN(adjuststack);
-			generated_iseq[pos++] = orig_sp - sp;
+		    const int diff = orig_sp - sp;
+		    if (diff > 0) {
+			if (add_adjust_info(insns_info, positions, insns_info_index, code_index, adjust)) insns_info_index++;
 		    }
-		    else if (orig_sp - sp == 0) {
-			/* jump to next insn */
-			insn_info_table[k].line_no = adjust->line_no;
-			insn_info_table[k].position = pos;
-			insn_info_table[k].sp = sp;
-			k++;
-			generated_iseq[pos++] = BIN(jump);
-			generated_iseq[pos++] = 0;
+		    if (diff > 1) {
+			generated_iseq[code_index++] = BIN(adjuststack);
+			generated_iseq[code_index++] = orig_sp - sp;
 		    }
-		    else {
-			rb_bug("iseq_set_sequence: adjust bug");
+		    else if (diff == 1) {
+			generated_iseq[code_index++] = BIN(pop);
+		    }
+		    else if (diff < 0) {
+			int label_no = adjust->label ? adjust->label->label_no : -1;
+			xfree(generated_iseq);
+			xfree(insns_info);
+			xfree(positions);
+			debug_list(anchor, list);
+			COMPILE_ERROR(iseq, adjust->line_no,
+				      "iseq_set_sequence: adjust bug to %d %d < %d",
+				      label_no, orig_sp, sp);
+			return COMPILE_NG;
 		    }
 		}
 		break;
@@ -1507,18 +2479,19 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 	list = list->next;
     }
 
-#if 0 /* XXX */
-    /* this check need dead code elimination */
-    if (sp != 1) {
-	rb_bug("SP is not 0 on %s (%d)\n", RSTRING_PTR(iseq->name), sp);
-    }
-#endif
+    body->iseq_encoded = (void *)generated_iseq;
+    body->iseq_size = code_index;
+    body->stack_max = stack_max;
+
+    /* get rid of memory leak when REALLOC failed */
+    body->insns_info.body = insns_info;
+    body->insns_info.positions = positions;
 
-    iseq->iseq = (void *)generated_iseq;
-    iseq->iseq_size = pos;
-    iseq->insn_info_table = insn_info_table;
-    iseq->insn_info_size = k;
-    iseq->stack_max = stack_max;
+    REALLOC_N(insns_info, struct iseq_insn_info_entry, insns_info_index);
+    body->insns_info.body = insns_info;
+    REALLOC_N(positions, unsigned int, insns_info_index);
+    body->insns_info.positions = positions;
+    body->insns_info.size = insns_info_index;
 
     return COMPILE_OK;
 }
@@ -1538,48 +2511,49 @@ label_get_sp(LABEL *lobj)
 static int
 iseq_set_exception_table(rb_iseq_t *iseq)
 {
-    VALUE *tptr, *ptr;
-    int tlen, i;
+    const VALUE *tptr, *ptr;
+    unsigned int tlen, i;
     struct iseq_catch_table_entry *entry;
 
-    tlen = RARRAY_LEN(iseq->compile_data->catch_table_ary);
-    tptr = RARRAY_PTR(iseq->compile_data->catch_table_ary);
-
-    iseq->catch_table = tlen ? ALLOC_N(struct iseq_catch_table_entry, tlen) : 0;
-    iseq->catch_table_size = tlen;
-
-    for (i = 0; i < tlen; i++) {
-	ptr = RARRAY_PTR(tptr[i]);
-	entry = &iseq->catch_table[i];
-	entry->type = ptr[0] & 0xffff;
-	entry->start = label_get_position((LABEL *)(ptr[1] & ~1));
-	entry->end = label_get_position((LABEL *)(ptr[2] & ~1));
-	entry->iseq = ptr[3];
-
-	/* register iseq as mark object */
-	if (entry->iseq != 0) {
-	    iseq_add_mark_object(iseq, entry->iseq);
-	}
-
-	/* stack depth */
-	if (ptr[4]) {
-	    LABEL *lobj = (LABEL *)(ptr[4] & ~1);
-	    entry->cont = label_get_position(lobj);
-	    entry->sp = label_get_sp(lobj);
-
-	    /* TODO: Dirty Hack!  Fix me */
-	    if (entry->type == CATCH_TYPE_RESCUE ||
-		entry->type == CATCH_TYPE_BREAK ||
-		entry->type == CATCH_TYPE_NEXT) {
-		entry->sp--;
+    iseq->body->catch_table = NULL;
+    if (NIL_P(ISEQ_COMPILE_DATA(iseq)->catch_table_ary)) return COMPILE_OK;
+    tlen = (int)RARRAY_LEN(ISEQ_COMPILE_DATA(iseq)->catch_table_ary);
+    tptr = RARRAY_CONST_PTR_TRANSIENT(ISEQ_COMPILE_DATA(iseq)->catch_table_ary);
+
+    if (tlen > 0) {
+	struct iseq_catch_table *table = xmalloc(iseq_catch_table_bytes(tlen));
+	table->size = tlen;
+
+	for (i = 0; i < table->size; i++) {
+            ptr = RARRAY_CONST_PTR_TRANSIENT(tptr[i]);
+	    entry = UNALIGNED_MEMBER_PTR(table, entries[i]);
+	    entry->type = (enum catch_type)(ptr[0] & 0xffff);
+	    entry->start = label_get_position((LABEL *)(ptr[1] & ~1));
+	    entry->end = label_get_position((LABEL *)(ptr[2] & ~1));
+	    entry->iseq = (rb_iseq_t *)ptr[3];
+	    RB_OBJ_WRITTEN(iseq, Qundef, entry->iseq);
+
+	    /* stack depth */
+	    if (ptr[4]) {
+		LABEL *lobj = (LABEL *)(ptr[4] & ~1);
+		entry->cont = label_get_position(lobj);
+		entry->sp = label_get_sp(lobj);
+
+		/* TODO: Dirty Hack!  Fix me */
+		if (entry->type == CATCH_TYPE_RESCUE ||
+		    entry->type == CATCH_TYPE_BREAK ||
+		    entry->type == CATCH_TYPE_NEXT) {
+		    entry->sp--;
+		}
+	    }
+	    else {
+		entry->cont = 0;
 	    }
 	}
-	else {
-	    entry->cont = 0;
-	}
+	iseq->body->catch_table = table;
+	RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->catch_table_ary, 0); /* free */
     }
 
-    iseq->compile_data->catch_table_ary = 0;	/* free */
     return COMPILE_OK;
 }
 
@@ -1596,11 +2570,11 @@ static int
 iseq_set_optargs_table(rb_iseq_t *iseq)
 {
     int i;
+    VALUE *opt_table = (VALUE *)iseq->body->param.opt_table;
 
-    if (iseq->arg_opts != 0) {
-	for (i = 0; i < iseq->arg_opts; i++) {
-	    iseq->arg_opt_table[i] =
-		label_get_position((LABEL *)iseq->arg_opt_table[i]);
+    if (iseq->body->param.flags.has_opt) {
+	for (i = 0; i < iseq->body->param.opt_num + 1; i++) {
+	    opt_table[i] = label_get_position((LABEL *)opt_table[i]);
 	}
     }
     return COMPILE_OK;
@@ -1611,14 +2585,32 @@ get_destination_insn(INSN *iobj)
 {
     LABEL *lobj = (LABEL *)OPERAND_AT(iobj, 0);
     LINK_ELEMENT *list;
+    rb_event_flag_t events = 0;
 
     list = lobj->link.next;
     while (list) {
-	if (list->type == ISEQ_ELEMENT_INSN || list->type == ISEQ_ELEMENT_ADJUST) {
+	switch (list->type) {
+	  case ISEQ_ELEMENT_INSN:
+	  case ISEQ_ELEMENT_ADJUST:
+	    goto found;
+	  case ISEQ_ELEMENT_LABEL:
+	    /* ignore */
 	    break;
+	  case ISEQ_ELEMENT_TRACE:
+	    {
+		TRACE *trace = (TRACE *)list;
+		events |= trace->event;
+	    }
+	    break;
+	  default: break;
 	}
 	list = list->next;
     }
+  found:
+    if (list && IS_INSN(list)) {
+	INSN *iobj = (INSN *)list;
+	iobj->insn_info.events |= events;
+    }
     return list;
 }
 
@@ -1628,7 +2620,7 @@ get_next_insn(INSN *iobj)
     LINK_ELEMENT *list = iobj->link.next;
 
     while (list) {
-	if (list->type == ISEQ_ELEMENT_INSN || list->type == ISEQ_ELEMENT_ADJUST) {
+	if (IS_INSN(list) || IS_ADJUST(list)) {
 	    return list;
 	}
 	list = list->next;
@@ -1642,7 +2634,7 @@ get_prev_insn(INSN *iobj)
     LINK_ELEMENT *list = iobj->link.prev;
 
     while (list) {
-	if (list->type == ISEQ_ELEMENT_INSN || list->type == ISEQ_ELEMENT_ADJUST) {
+	if (IS_INSN(list) || IS_ADJUST(list)) {
 	    return list;
 	}
 	list = list->prev;
@@ -1650,23 +2642,247 @@ get_prev_insn(INSN *iobj)
     return 0;
 }
 
+static void
+unref_destination(INSN *iobj, int pos)
+{
+    LABEL *lobj = (LABEL *)OPERAND_AT(iobj, pos);
+    --lobj->refcnt;
+    if (!lobj->refcnt) ELEM_REMOVE(&lobj->link);
+}
+
+static void
+replace_destination(INSN *dobj, INSN *nobj)
+{
+    VALUE n = OPERAND_AT(nobj, 0);
+    LABEL *dl = (LABEL *)OPERAND_AT(dobj, 0);
+    LABEL *nl = (LABEL *)n;
+    --dl->refcnt;
+    ++nl->refcnt;
+    OPERAND_AT(dobj, 0) = n;
+    if (!dl->refcnt) ELEM_REMOVE(&dl->link);
+}
+
+static LABEL*
+find_destination(INSN *i)
+{
+    int pos, len = insn_len(i->insn_id);
+    for (pos = 0; pos < len; ++pos) {
+	if (insn_op_types(i->insn_id)[pos] == TS_OFFSET) {
+	    return (LABEL *)OPERAND_AT(i, pos);
+	}
+    }
+    return 0;
+}
+
+static int
+remove_unreachable_chunk(rb_iseq_t *iseq, LINK_ELEMENT *i)
+{
+    LINK_ELEMENT *first = i, *end;
+    int *unref_counts = 0, nlabels = ISEQ_COMPILE_DATA(iseq)->label_no;
+
+    if (!i) return 0;
+    unref_counts = ALLOCA_N(int, nlabels);
+    MEMZERO(unref_counts, int, nlabels);
+    end = i;
+    do {
+	LABEL *lab;
+	if (IS_INSN(i)) {
+	    if (IS_INSN_ID(i, leave)) {
+		end = i;
+		break;
+	    }
+	    else if ((lab = find_destination((INSN *)i)) != 0) {
+		if (lab->unremovable) break;
+		unref_counts[lab->label_no]++;
+	    }
+	}
+	else if (IS_LABEL(i)) {
+	    lab = (LABEL *)i;
+	    if (lab->unremovable) return 0;
+	    if (lab->refcnt > unref_counts[lab->label_no]) {
+		if (i == first) return 0;
+		break;
+	    }
+	    continue;
+	}
+	else if (IS_TRACE(i)) {
+	    /* do nothing */
+	}
+	else if (IS_ADJUST(i)) {
+	    LABEL *dest = ((ADJUST *)i)->label;
+	    if (dest && dest->unremovable) return 0;
+	}
+	end = i;
+    } while ((i = i->next) != 0);
+    i = first;
+    do {
+	if (IS_INSN(i)) {
+	    struct rb_iseq_constant_body *body = iseq->body;
+	    VALUE insn = INSN_OF(i);
+	    int pos, len = insn_len(insn);
+	    for (pos = 0; pos < len; ++pos) {
+		switch (insn_op_types(insn)[pos]) {
+		  case TS_OFFSET:
+		    unref_destination((INSN *)i, pos);
+		    break;
+                  case TS_CALLDATA:
+                    --(body->ci_size);
+		    break;
+		}
+	    }
+	}
+	ELEM_REMOVE(i);
+    } while ((i != end) && (i = i->next) != 0);
+    return 1;
+}
+
+static int
+iseq_pop_newarray(rb_iseq_t *iseq, INSN *iobj)
+{
+    switch (OPERAND_AT(iobj, 0)) {
+      case INT2FIX(0): /* empty array */
+	ELEM_REMOVE(&iobj->link);
+	return TRUE;
+      case INT2FIX(1): /* single element array */
+	ELEM_REMOVE(&iobj->link);
+	return FALSE;
+      default:
+	iobj->insn_id = BIN(adjuststack);
+	return TRUE;
+    }
+}
+
+static int
+is_frozen_putstring(INSN *insn, VALUE *op)
+{
+    if (IS_INSN_ID(insn, putstring)) {
+        *op = OPERAND_AT(insn, 0);
+        return 1;
+    }
+    else if (IS_INSN_ID(insn, putobject)) { /* frozen_string_literal */
+        *op = OPERAND_AT(insn, 0);
+        return RB_TYPE_P(*op, T_STRING);
+    }
+    return 0;
+}
+
+static int
+optimize_checktype(rb_iseq_t *iseq, INSN *iobj)
+{
+    /*
+     *   putobject obj
+     *   dup
+     *   checktype T_XXX
+     *   branchif l1
+     * l2:
+     *   ...
+     * l1:
+     *
+     * => obj is a T_XXX
+     *
+     *   putobject obj (T_XXX)
+     *   jump L1
+     * L1:
+     *
+     * => obj is not a T_XXX
+     *
+     *   putobject obj (T_XXX)
+     *   jump L2
+     * L2:
+     */
+    int line;
+    INSN *niobj, *ciobj, *dup = 0;
+    LABEL *dest = 0;
+    VALUE type;
+
+    switch (INSN_OF(iobj)) {
+      case BIN(putstring):
+	type = INT2FIX(T_STRING);
+	break;
+      case BIN(putnil):
+	type = INT2FIX(T_NIL);
+	break;
+      case BIN(putobject):
+	type = INT2FIX(TYPE(OPERAND_AT(iobj, 0)));
+	break;
+      default: return FALSE;
+    }
+
+    ciobj = (INSN *)get_next_insn(iobj);
+    if (IS_INSN_ID(ciobj, jump)) {
+	ciobj = (INSN *)get_next_insn((INSN*)OPERAND_AT(ciobj, 0));
+    }
+    if (IS_INSN_ID(ciobj, dup)) {
+	ciobj = (INSN *)get_next_insn(dup = ciobj);
+    }
+    if (!ciobj || !IS_INSN_ID(ciobj, checktype)) return FALSE;
+    niobj = (INSN *)get_next_insn(ciobj);
+    if (!niobj) {
+	/* TODO: putobject true/false */
+	return FALSE;
+    }
+    switch (INSN_OF(niobj)) {
+      case BIN(branchif):
+	if (OPERAND_AT(ciobj, 0) == type) {
+	    dest = (LABEL *)OPERAND_AT(niobj, 0);
+	}
+	break;
+      case BIN(branchunless):
+	if (OPERAND_AT(ciobj, 0) != type) {
+	    dest = (LABEL *)OPERAND_AT(niobj, 0);
+	}
+	break;
+      default:
+        return FALSE;
+    }
+    line = ciobj->insn_info.line_no;
+    if (!dest) {
+	if (niobj->link.next && IS_LABEL(niobj->link.next)) {
+	    dest = (LABEL *)niobj->link.next; /* reuse label */
+	}
+	else {
+	    dest = NEW_LABEL(line);
+	    ELEM_INSERT_NEXT(&niobj->link, &dest->link);
+	}
+    }
+    INSERT_AFTER_INSN1(iobj, line, jump, dest);
+    LABEL_REF(dest);
+    if (!dup) INSERT_AFTER_INSN(iobj, line, pop);
+    return TRUE;
+}
+
+static const struct rb_callinfo *
+ci_flag_set(const rb_iseq_t *iseq, const struct rb_callinfo *ci, unsigned int add)
+{
+    const struct rb_callinfo *nci = vm_ci_new(vm_ci_mid(ci),
+                                             vm_ci_flag(ci) | add,
+                                             vm_ci_argc(ci),
+                                             vm_ci_kwarg(ci));
+    RB_OBJ_WRITTEN(iseq, ci, nci);
+    return nci;
+}
+
+static const struct rb_callinfo *
+ci_argc_set(const rb_iseq_t *iseq, const struct rb_callinfo *ci, int argc)
+{
+    const struct rb_callinfo *nci = vm_ci_new(vm_ci_mid(ci),
+                                              vm_ci_flag(ci),
+                                              argc,
+                                              vm_ci_kwarg(ci));
+    RB_OBJ_WRITTEN(iseq, ci, nci);
+    return nci;
+}
+
 static int
 iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcallopt)
 {
-    INSN *iobj = (INSN *)list;
+    INSN *const iobj = (INSN *)list;
+
   again:
-    if (iobj->insn_id == BIN(jump)) {
-	INSN *niobj, *diobj, *piobj;
-	/*
-	 *  useless jump elimination:
-	 *     jump LABEL1
-	 *     ...
-	 *   LABEL1:
-	 *     jump LABEL2
-	 *
-	 *   => in this case, first jump instruction should jump to
-	 *      LABEL2 directly
-	 */
+    optimize_checktype(iseq, iobj);
+
+    if (IS_INSN_ID(iobj, jump)) {
+        INSN *niobj, *diobj, *piobj;
 	diobj = (INSN *)get_destination_insn(iobj);
 	niobj = (INSN *)get_next_insn(iobj);
 
@@ -1677,15 +2893,29 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 	     * =>
 	     *   LABEL:
 	     */
-	    REMOVE_ELEM(&iobj->link);
-	}
-	else if (iobj != diobj && diobj->insn_id == BIN(jump)) {
-	    if (OPERAND_AT(iobj, 0) != OPERAND_AT(diobj, 0)) {
-		OPERAND_AT(iobj, 0) = OPERAND_AT(diobj, 0);
-		goto again;
-	    }
+	    unref_destination(iobj, 0);
+	    ELEM_REMOVE(&iobj->link);
+	    return COMPILE_OK;
+	}
+        else if (iobj != diobj && IS_INSN(&diobj->link) &&
+                 IS_INSN_ID(diobj, jump) &&
+		 OPERAND_AT(iobj, 0) != OPERAND_AT(diobj, 0) &&
+                 diobj->insn_info.events == 0) {
+	    /*
+	     *  useless jump elimination:
+	     *     jump LABEL1
+	     *     ...
+	     *   LABEL1:
+	     *     jump LABEL2
+	     *
+	     *   => in this case, first jump instruction should jump to
+	     *      LABEL2 directly
+	     */
+	    replace_destination(iobj, diobj);
+	    remove_unreachable_chunk(iseq, iobj->link.next);
+	    goto again;
 	}
-	else if (diobj->insn_id == BIN(leave)) {
+        else if (IS_INSN_ID(diobj, leave)) {
 	    /*
 	     *  jump LABEL
 	     *  ...
@@ -1697,43 +2927,107 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 	     * LABEL:
 	     *  leave
 	     */
-	    INSN *eiobj = new_insn_core(iseq, iobj->line_no, BIN(leave),
-					diobj->operand_size, diobj->operands);
-	    INSN *popiobj = new_insn_core(iseq, iobj->line_no,
-					  BIN(pop), 0, 0);
 	    /* replace */
-	    REPLACE_ELEM((LINK_ELEMENT *)iobj, (LINK_ELEMENT *)eiobj);
-	    INSERT_ELEM_NEXT((LINK_ELEMENT *)eiobj, (LINK_ELEMENT *)popiobj);
-	    iobj = popiobj;
-	}
-	/*
-	 * useless jump elimination (if/unless destination):
-	 *   if   L1
-	 *   jump L2
-	 * L1:
-	 *   ...
-	 * L2:
-	 *
-	 * ==>
-	 *   unless L2
-	 * L1:
-	 *   ...
-	 * L2:
-	 */
-	else if ((piobj = (INSN *)get_prev_insn(iobj)) != 0 &&
-		 (piobj->insn_id == BIN(branchif) ||
-		  piobj->insn_id == BIN(branchunless))) {
-	    if (niobj == (INSN *)get_destination_insn(piobj)) {
-		piobj->insn_id = (piobj->insn_id == BIN(branchif))
+	    unref_destination(iobj, 0);
+            iobj->insn_id = BIN(leave);
+	    iobj->operand_size = 0;
+	    iobj->insn_info = diobj->insn_info;
+	    goto again;
+	}
+        else if (IS_INSN(iobj->link.prev) &&
+                 (piobj = (INSN *)iobj->link.prev) &&
+		 (IS_INSN_ID(piobj, branchif) ||
+		  IS_INSN_ID(piobj, branchunless))) {
+	    INSN *pdiobj = (INSN *)get_destination_insn(piobj);
+	    if (niobj == pdiobj) {
+		int refcnt = IS_LABEL(piobj->link.next) ?
+		    ((LABEL *)piobj->link.next)->refcnt : 0;
+		/*
+		 * useless jump elimination (if/unless destination):
+		 *   if   L1
+		 *   jump L2
+		 * L1:
+		 *   ...
+		 * L2:
+		 *
+		 * ==>
+		 *   unless L2
+		 * L1:
+		 *   ...
+		 * L2:
+		 */
+		piobj->insn_id = (IS_INSN_ID(piobj, branchif))
 		  ? BIN(branchunless) : BIN(branchif);
-		OPERAND_AT(piobj, 0) = OPERAND_AT(iobj, 0);
-		REMOVE_ELEM(&iobj->link);
+		replace_destination(piobj, iobj);
+		if (refcnt <= 1) {
+		    ELEM_REMOVE(&iobj->link);
+		}
+		else {
+		    /* TODO: replace other branch destinations too */
+		}
+		return COMPILE_OK;
 	    }
+	    else if (diobj == pdiobj) {
+		/*
+		 * useless jump elimination (if/unless before jump):
+		 * L1:
+		 *   ...
+		 *   if   L1
+		 *   jump L1
+		 *
+		 * ==>
+		 * L1:
+		 *   ...
+		 *   pop
+		 *   jump L1
+		 */
+		INSN *popiobj = new_insn_core(iseq, iobj->insn_info.line_no,
+					      BIN(pop), 0, 0);
+		ELEM_REPLACE(&piobj->link, &popiobj->link);
+	    }
+	}
+	if (remove_unreachable_chunk(iseq, iobj->link.next)) {
+	    goto again;
 	}
     }
 
-    if (iobj->insn_id == BIN(branchif) ||
-	iobj->insn_id == BIN(branchunless)) {
+    /*
+     * putstring "beg"
+     * putstring "end"
+     * newrange excl
+     *
+     * ==>
+     *
+     * putobject "beg".."end"
+     */
+    if (IS_INSN_ID(iobj, checkmatch)) {
+        INSN *range = (INSN *)get_prev_insn(iobj);
+        INSN *beg, *end;
+        VALUE str_beg, str_end;
+
+	if (range && IS_INSN_ID(range, newrange) &&
+                (end = (INSN *)get_prev_insn(range)) != 0 &&
+                is_frozen_putstring(end, &str_end) &&
+                (beg = (INSN *)get_prev_insn(end)) != 0 &&
+                is_frozen_putstring(beg, &str_beg)) {
+	    int excl = FIX2INT(OPERAND_AT(range, 0));
+	    VALUE lit_range = rb_range_new(str_beg, str_end, excl);
+
+	    ELEM_REMOVE(&beg->link);
+	    ELEM_REMOVE(&end->link);
+	    range->insn_id = BIN(putobject);
+	    OPERAND_AT(range, 0) = lit_range;
+	    RB_OBJ_WRITTEN(iseq, Qundef, lit_range);
+	}
+    }
+
+    if (IS_INSN_ID(iobj, leave)) {
+	remove_unreachable_chunk(iseq, iobj->link.next);
+    }
+
+    if (IS_INSN_ID(iobj, branchif) ||
+	IS_INSN_ID(iobj, branchnil) ||
+	IS_INSN_ID(iobj, branchunless)) {
 	/*
 	 *   if L1
 	 *   ...
@@ -1743,144 +3037,506 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 	 *   if L2
 	 */
 	INSN *nobj = (INSN *)get_destination_insn(iobj);
-	if (nobj->insn_id == BIN(jump)) {
-	    OPERAND_AT(iobj, 0) = OPERAND_AT(nobj, 0);
+
+        /* This is super nasty hack!!!
+         *
+         * This jump-jump optimization may ignore event flags of the jump
+         * instruction being skipped.  Actually, Line 2 TracePoint event
+         * is never fired in the following code:
+         *
+         *   1: raise if 1 == 2
+         *   2: while true
+         *   3:   break
+         *   4: end
+         *
+         * This is critical for coverage measurement.  [Bug #15980]
+         *
+         * This is a stopgap measure: stop the jump-jump optimization if
+         * coverage measurement is enabled and if the skipped instruction
+         * has any event flag.
+         *
+         * Note that, still, TracePoint Line event does not occur on Line 2.
+         * This should be fixed in future.
+         */
+        int stop_optimization =
+	    ISEQ_COVERAGE(iseq) && ISEQ_LINE_COVERAGE(iseq) &&
+            nobj->insn_info.events;
+	if (!stop_optimization) {
+            INSN *pobj = (INSN *)iobj->link.prev;
+            int prev_dup = 0;
+            if (pobj) {
+                if (!IS_INSN(&pobj->link))
+                    pobj = 0;
+                else if (IS_INSN_ID(pobj, dup))
+                    prev_dup = 1;
+            }
+
+            for (;;) {
+                if (IS_INSN(&nobj->link) && IS_INSN_ID(nobj, jump)) {
+                    replace_destination(iobj, nobj);
+                }
+                else if (prev_dup && IS_INSN_ID(nobj, dup) &&
+                         !!(nobj = (INSN *)nobj->link.next) &&
+                         /* basic blocks, with no labels in the middle */
+                         nobj->insn_id == iobj->insn_id) {
+                    /*
+                     *   dup
+                     *   if L1
+                     *   ...
+                     * L1:
+                     *   dup
+                     *   if L2
+                     * =>
+                     *   dup
+                     *   if L2
+                     *   ...
+                     * L1:
+                     *   dup
+                     *   if L2
+                     */
+                    replace_destination(iobj, nobj);
+                }
+                else if (pobj) {
+                    /*
+                     *   putnil
+                     *   if L1
+                     * =>
+                     *   # nothing
+                     *
+                     *   putobject true
+                     *   if L1
+                     * =>
+                     *   jump L1
+                     *
+                     *   putstring ".."
+                     *   if L1
+                     * =>
+                     *   jump L1
+                     *
+                     *   putstring ".."
+                     *   dup
+                     *   if L1
+                     * =>
+                     *   putstring ".."
+                     *   jump L1
+                     *
+                     */
+                    int cond;
+                    if (prev_dup && IS_INSN(pobj->link.prev)) {
+                        pobj = (INSN *)pobj->link.prev;
+                    }
+                    if (IS_INSN_ID(pobj, putobject)) {
+                        cond = (IS_INSN_ID(iobj, branchif) ?
+                                OPERAND_AT(pobj, 0) != Qfalse :
+                                IS_INSN_ID(iobj, branchunless) ?
+                                OPERAND_AT(pobj, 0) == Qfalse :
+                                FALSE);
+                    }
+                    else if (IS_INSN_ID(pobj, putstring) ||
+                             IS_INSN_ID(pobj, duparray) ||
+                             IS_INSN_ID(pobj, newarray)) {
+                        cond = IS_INSN_ID(iobj, branchif);
+                    }
+                    else if (IS_INSN_ID(pobj, putnil)) {
+                        cond = !IS_INSN_ID(iobj, branchif);
+                    }
+                    else break;
+                    if (prev_dup || !IS_INSN_ID(pobj, newarray)) {
+                        ELEM_REMOVE(iobj->link.prev);
+                    }
+                    else if (!iseq_pop_newarray(iseq, pobj)) {
+                        pobj = new_insn_core(iseq, pobj->insn_info.line_no, BIN(pop), 0, NULL);
+                        ELEM_INSERT_PREV(&iobj->link, &pobj->link);
+                    }
+                    if (cond) {
+                        if (prev_dup) {
+                            pobj = new_insn_core(iseq, pobj->insn_info.line_no, BIN(putnil), 0, NULL);
+                            ELEM_INSERT_NEXT(&iobj->link, &pobj->link);
+                        }
+                        iobj->insn_id = BIN(jump);
+                        goto again;
+                    }
+                    else {
+                        unref_destination(iobj, 0);
+                        ELEM_REMOVE(&iobj->link);
+                    }
+                    break;
+                }
+                else break;
+                nobj = (INSN *)get_destination_insn(nobj);
+            }
+        }
+    }
+
+    if (IS_INSN_ID(iobj, pop)) {
+	/*
+	 *  putself / putnil / putobject obj / putstring "..."
+	 *  pop
+	 * =>
+	 *  # do nothing
+	 */
+	LINK_ELEMENT *prev = iobj->link.prev;
+	if (IS_INSN(prev)) {
+	    enum ruby_vminsn_type previ = ((INSN *)prev)->insn_id;
+	    if (previ == BIN(putobject) || previ == BIN(putnil) ||
+		previ == BIN(putself) || previ == BIN(putstring) ||
+		previ == BIN(dup) ||
+		previ == BIN(getlocal) ||
+		previ == BIN(getblockparam) ||
+		previ == BIN(getblockparamproxy) ||
+		/* getinstancevariable may issue a warning */
+		previ == BIN(duparray)) {
+		/* just push operand or static value and pop soon, no
+		 * side effects */
+		ELEM_REMOVE(prev);
+		ELEM_REMOVE(&iobj->link);
+	    }
+	    else if (previ == BIN(newarray) && iseq_pop_newarray(iseq, (INSN*)prev)) {
+		ELEM_REMOVE(&iobj->link);
+	    }
+	    else if (previ == BIN(concatarray)) {
+		INSN *piobj = (INSN *)prev;
+		INSERT_BEFORE_INSN1(piobj, piobj->insn_info.line_no, splatarray, Qfalse);
+		INSN_OF(piobj) = BIN(pop);
+	    }
+	    else if (previ == BIN(concatstrings)) {
+		if (OPERAND_AT(prev, 0) == INT2FIX(1)) {
+		    ELEM_REMOVE(prev);
+		}
+		else {
+		    ELEM_REMOVE(&iobj->link);
+		    INSN_OF(prev) = BIN(adjuststack);
+		}
+	    }
 	}
     }
 
-    if (do_tailcallopt && iobj->insn_id == BIN(leave)) {
+    if (IS_INSN_ID(iobj, newarray) ||
+	IS_INSN_ID(iobj, duparray) ||
+	IS_INSN_ID(iobj, expandarray) ||
+	IS_INSN_ID(iobj, concatarray) ||
+	IS_INSN_ID(iobj, splatarray) ||
+	0) {
+	/*
+	 *  newarray N
+	 *  splatarray
+	 * =>
+	 *  newarray N
+	 * newarray always puts an array
+	 */
+	LINK_ELEMENT *next = iobj->link.next;
+	if (IS_INSN(next) && IS_INSN_ID(next, splatarray)) {
+	    /* remove splatarray following always-array insn */
+	    ELEM_REMOVE(next);
+	}
+    }
+
+    if (IS_INSN_ID(iobj, tostring)) {
+	LINK_ELEMENT *next = iobj->link.next;
+	/*
+	 *  tostring
+	 *  concatstrings 1
+	 * =>
+	 *  tostring
+	 */
+	if (IS_INSN(next) && IS_INSN_ID(next, concatstrings) &&
+	    OPERAND_AT(next, 0) == INT2FIX(1)) {
+	    ELEM_REMOVE(next);
+	}
+    }
+
+    if (IS_INSN_ID(iobj, putstring) ||
+	(IS_INSN_ID(iobj, putobject) && RB_TYPE_P(OPERAND_AT(iobj, 0), T_STRING))) {
+	/*
+	 *  putstring ""
+	 *  concatstrings N
+	 * =>
+	 *  concatstrings N-1
+	 */
+	if (IS_NEXT_INSN_ID(&iobj->link, concatstrings) &&
+	    RSTRING_LEN(OPERAND_AT(iobj, 0)) == 0) {
+	    INSN *next = (INSN *)iobj->link.next;
+	    if ((OPERAND_AT(next, 0) = FIXNUM_INC(OPERAND_AT(next, 0), -1)) == INT2FIX(1)) {
+		ELEM_REMOVE(&next->link);
+	    }
+	    ELEM_REMOVE(&iobj->link);
+	}
+    }
+
+    if (IS_INSN_ID(iobj, concatstrings)) {
+	/*
+	 *  concatstrings N
+	 *  concatstrings M
+	 * =>
+	 *  concatstrings N+M-1
+	 */
+	LINK_ELEMENT *next = iobj->link.next;
+	INSN *jump = 0;
+	if (IS_INSN(next) && IS_INSN_ID(next, jump))
+	    next = get_destination_insn(jump = (INSN *)next);
+	if (IS_INSN(next) && IS_INSN_ID(next, concatstrings)) {
+	    int n = FIX2INT(OPERAND_AT(iobj, 0)) + FIX2INT(OPERAND_AT(next, 0)) - 1;
+	    OPERAND_AT(iobj, 0) = INT2FIX(n);
+	    if (jump) {
+		LABEL *label = ((LABEL *)OPERAND_AT(jump, 0));
+		if (!--label->refcnt) {
+		    ELEM_REMOVE(&label->link);
+		}
+		else {
+		    label = NEW_LABEL(0);
+		    OPERAND_AT(jump, 0) = (VALUE)label;
+		}
+		label->refcnt++;
+		ELEM_INSERT_NEXT(next, &label->link);
+		CHECK(iseq_peephole_optimize(iseq, get_next_insn(jump), do_tailcallopt));
+	    }
+	    else {
+		ELEM_REMOVE(next);
+	    }
+	}
+    }
+
+    if (do_tailcallopt &&
+	(IS_INSN_ID(iobj, send) ||
+	 IS_INSN_ID(iobj, opt_aref_with) ||
+	 IS_INSN_ID(iobj, opt_aset_with) ||
+	 IS_INSN_ID(iobj, invokesuper))) {
 	/*
 	 *  send ...
 	 *  leave
 	 * =>
-	 *  send ..., ... | VM_CALL_TAILCALL_BIT, ...
+	 *  send ..., ... | VM_CALL_TAILCALL, ...
 	 *  leave # unreachable
 	 */
-	INSN *piobj = (INSN *)get_prev_insn((INSN *)list);
+	INSN *piobj = NULL;
+	if (iobj->link.next) {
+	    LINK_ELEMENT *next = iobj->link.next;
+	    do {
+		if (!IS_INSN(next)) {
+		    next = next->next;
+		    continue;
+		}
+		switch (INSN_OF(next)) {
+		  case BIN(nop):
+		    next = next->next;
+		    break;
+		  case BIN(jump):
+		    /* if cond
+		     *   return tailcall
+		     * end
+		     */
+		    next = get_destination_insn((INSN *)next);
+		    break;
+		  case BIN(leave):
+		    piobj = iobj;
+                    /* fall through */
+		  default:
+		    next = NULL;
+		    break;
+		}
+	    } while (next);
+	}
 
-	if (piobj->insn_id == BIN(send) &&
-	    piobj->operands[2] == 0 /* block */
-	    ) {
-	    piobj->operands[3] = INT2FIX(FIX2INT(piobj->operands[3]) | VM_CALL_TAILCALL_BIT);
+	if (piobj) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(piobj, 0);
+	    if (IS_INSN_ID(piobj, send) ||
+                IS_INSN_ID(piobj, invokesuper)) {
+                if (OPERAND_AT(piobj, 1) == 0) { /* no blockiseq */
+                    ci = ci_flag_set(iseq, ci, VM_CALL_TAILCALL);
+                    OPERAND_AT(piobj, 0) = (VALUE)ci;
+                    RB_OBJ_WRITTEN(iseq, Qundef, ci);
+		}
+	    }
+	    else {
+                ci = ci_flag_set(iseq, ci, VM_CALL_TAILCALL);
+                OPERAND_AT(piobj, 0) = (VALUE)ci;
+                RB_OBJ_WRITTEN(iseq, Qundef, ci);
+	    }
 	}
     }
-    return COMPILE_OK;
-}
 
-static int
-insn_set_specialized_instruction(INSN *iobj, int insn_id)
-{
-    iobj->insn_id = insn_id;
-    iobj->operand_size = 0;
+    if (IS_INSN_ID(iobj, dup)) {
+	if (IS_NEXT_INSN_ID(&iobj->link, setlocal)) {
+	    LINK_ELEMENT *set1 = iobj->link.next, *set2 = NULL;
+	    if (IS_NEXT_INSN_ID(set1, setlocal)) {
+		set2 = set1->next;
+		if (OPERAND_AT(set1, 0) == OPERAND_AT(set2, 0) &&
+		    OPERAND_AT(set1, 1) == OPERAND_AT(set2, 1)) {
+		    ELEM_REMOVE(set1);
+		    ELEM_REMOVE(&iobj->link);
+		}
+	    }
+	    else if (IS_NEXT_INSN_ID(set1, dup) &&
+		     IS_NEXT_INSN_ID(set1->next, setlocal)) {
+		set2 = set1->next->next;
+		if (OPERAND_AT(set1, 0) == OPERAND_AT(set2, 0) &&
+		    OPERAND_AT(set1, 1) == OPERAND_AT(set2, 1)) {
+		    ELEM_REMOVE(set1->next);
+		    ELEM_REMOVE(set2);
+		}
+	    }
+	}
+    }
+
+    if (IS_INSN_ID(iobj, getlocal)) {
+	LINK_ELEMENT *niobj = &iobj->link;
+	if (IS_NEXT_INSN_ID(niobj, dup)) {
+	    niobj = niobj->next;
+	}
+	if (IS_NEXT_INSN_ID(niobj, setlocal)) {
+	    LINK_ELEMENT *set1 = niobj->next;
+	    if (OPERAND_AT(iobj, 0) == OPERAND_AT(set1, 0) &&
+		OPERAND_AT(iobj, 1) == OPERAND_AT(set1, 1)) {
+		ELEM_REMOVE(set1);
+		ELEM_REMOVE(niobj);
+	    }
+	}
+    }
+
+    if (IS_INSN_ID(iobj, opt_invokebuiltin_delegate)) {
+        if (IS_TRACE(iobj->link.next)) {
+            if (IS_NEXT_INSN_ID(iobj->link.next, leave)) {
+                iobj->insn_id = BIN(opt_invokebuiltin_delegate_leave);
+            }
+        }
+    }
+
     return COMPILE_OK;
 }
 
 static int
-insn_set_specialized_instruction_with_ic(INSN *iobj, int insn_id, int n)
+insn_set_specialized_instruction(rb_iseq_t *iseq, INSN *iobj, int insn_id)
 {
-    int i;
     iobj->insn_id = insn_id;
-    iobj->operand_size = n;
-
-    /* max of n is 4 */
-    for (i=0; i<n; i++) {
-	iobj->operands[i] = Qnil;
+    iobj->operand_size = insn_len(insn_id) - 1;
+
+    if (insn_id == BIN(opt_neq)) {
+	VALUE *old_operands = iobj->operands;
+        iobj->operand_size = 2;
+        iobj->operands = compile_data_calloc2(iseq, iobj->operand_size, sizeof(VALUE));
+        iobj->operands[0] = (VALUE)new_callinfo(iseq, idEq, 1, 0, NULL, FALSE);
+        iobj->operands[1] = old_operands[0];
     }
 
     return COMPILE_OK;
 }
 
-
 static int
 iseq_specialized_instruction(rb_iseq_t *iseq, INSN *iobj)
 {
-    if (iobj->insn_id == BIN(send)) {
-	ID mid = SYM2ID(OPERAND_AT(iobj, 0));
-	int argc = FIX2INT(OPERAND_AT(iobj, 1));
-	VALUE block = OPERAND_AT(iobj, 2);
-	VALUE flag = OPERAND_AT(iobj, 3);
-
-	/* TODO: should be more sophisticated search */
-	if (block == 0 && flag == INT2FIX(0)) {
-	    if (argc == 0) {
-		if (mid == idLength) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_length));
-		}
-		else if (mid == idSucc) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_succ));
-		}
-		else if (mid == idNot) {
-		    insn_set_specialized_instruction_with_ic(iobj, BIN(opt_not), 1);
+    if (IS_INSN_ID(iobj, newarray) && iobj->link.next &&
+	IS_INSN(iobj->link.next)) {
+	/*
+	 *   [a, b, ...].max/min -> a, b, c, opt_newarray_max/min
+	 */
+	INSN *niobj = (INSN *)iobj->link.next;
+	if (IS_INSN_ID(niobj, send)) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(niobj, 0);
+            if ((vm_ci_flag(ci) & VM_CALL_ARGS_SIMPLE) && vm_ci_argc(ci) == 0) {
+		switch (vm_ci_mid(ci)) {
+		  case idMax:
+		    iobj->insn_id = BIN(opt_newarray_max);
+		    ELEM_REMOVE(&niobj->link);
+		    return COMPILE_OK;
+		  case idMin:
+		    iobj->insn_id = BIN(opt_newarray_min);
+		    ELEM_REMOVE(&niobj->link);
+		    return COMPILE_OK;
 		}
 	    }
-	    else if (argc == 1) {
-		if (0) {
-		}
-		else if (mid == idPLUS) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_plus));
-		}
-		else if (mid == idMINUS) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_minus));
-		}
-		else if (mid == idMULT) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_mult));
-		}
-		else if (mid == idDIV) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_div));
-		}
-		else if (mid == idMOD) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_mod));
-		}
-		else if (mid == idEq) {
-		    insn_set_specialized_instruction_with_ic(iobj, BIN(opt_eq), 1);
-		}
-		else if (mid == idNeq) {
-		    insn_set_specialized_instruction_with_ic(iobj, BIN(opt_neq), 2);
-		}
-		else if (mid == idLT) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_lt));
-		}
-		else if (mid == idLE) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_le));
-		}
-		else if (mid == idGT) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_gt));
-		}
-		else if (mid == idGE) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_ge));
+	}
+    }
+
+    if (IS_INSN_ID(iobj, send)) {
+        const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(iobj, 0);
+        const rb_iseq_t *blockiseq = (rb_iseq_t *)OPERAND_AT(iobj, 1);
+
+#define SP_INSN(opt) insn_set_specialized_instruction(iseq, iobj, BIN(opt_##opt))
+	if (vm_ci_flag(ci) & VM_CALL_ARGS_SIMPLE) {
+	    switch (vm_ci_argc(ci)) {
+	      case 0:
+		switch (vm_ci_mid(ci)) {
+		  case idLength: SP_INSN(length); return COMPILE_OK;
+		  case idSize:	 SP_INSN(size);	  return COMPILE_OK;
+		  case idEmptyP: SP_INSN(empty_p);return COMPILE_OK;
+                  case idNilP:   SP_INSN(nil_p);  return COMPILE_OK;
+		  case idSucc:	 SP_INSN(succ);	  return COMPILE_OK;
+		  case idNot:	 SP_INSN(not);	  return COMPILE_OK;
 		}
-		else if (mid == idLTLT) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_ltlt));
+		break;
+	      case 1:
+		switch (vm_ci_mid(ci)) {
+		  case idPLUS:	 SP_INSN(plus);	  return COMPILE_OK;
+		  case idMINUS:	 SP_INSN(minus);  return COMPILE_OK;
+		  case idMULT:	 SP_INSN(mult);	  return COMPILE_OK;
+		  case idDIV:	 SP_INSN(div);	  return COMPILE_OK;
+		  case idMOD:	 SP_INSN(mod);	  return COMPILE_OK;
+		  case idEq:	 SP_INSN(eq);	  return COMPILE_OK;
+		  case idNeq:	 SP_INSN(neq);	  return COMPILE_OK;
+		  case idEqTilde:SP_INSN(regexpmatch2);return COMPILE_OK;
+		  case idLT:	 SP_INSN(lt);	  return COMPILE_OK;
+		  case idLE:	 SP_INSN(le);	  return COMPILE_OK;
+		  case idGT:	 SP_INSN(gt);	  return COMPILE_OK;
+		  case idGE:	 SP_INSN(ge);	  return COMPILE_OK;
+		  case idLTLT:	 SP_INSN(ltlt);	  return COMPILE_OK;
+		  case idAREF:	 SP_INSN(aref);	  return COMPILE_OK;
+                  case idAnd:    SP_INSN(and);    return COMPILE_OK;
+                  case idOr:     SP_INSN(or);    return COMPILE_OK;
 		}
-		else if (mid == idAREF) {
-		    insn_set_specialized_instruction(iobj, BIN(opt_aref));
+		break;
+	      case 2:
+		switch (vm_ci_mid(ci)) {
+		  case idASET:	 SP_INSN(aset);	  return COMPILE_OK;
 		}
+		break;
 	    }
 	}
 
-	if (argc > 0) {
-	    if (mid == idSend || mid == id__send__ ) {
-		OPERAND_AT(iobj, 3) |= INT2FIX(VM_CALL_SEND_BIT);
-	    }
+	if ((vm_ci_flag(ci) & VM_CALL_ARGS_BLOCKARG) == 0 && blockiseq == NULL) {
+	    iobj->insn_id = BIN(opt_send_without_block);
+	    iobj->operand_size = insn_len(iobj->insn_id) - 1;
 	}
     }
+#undef SP_INSN
+
     return COMPILE_OK;
 }
 
+static inline int
+tailcallable_p(rb_iseq_t *iseq)
+{
+    switch (iseq->body->type) {
+      case ISEQ_TYPE_TOP:
+      case ISEQ_TYPE_EVAL:
+      case ISEQ_TYPE_MAIN:
+	/* not tail callable because cfp will be over popped */
+      case ISEQ_TYPE_RESCUE:
+      case ISEQ_TYPE_ENSURE:
+	/* rescue block can't tail call because of errinfo */
+	return FALSE;
+      default:
+	return TRUE;
+    }
+}
+
 static int
-iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
+iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 {
     LINK_ELEMENT *list;
-    const int do_peepholeopt = iseq->compile_data->option->peephole_optimization;
-    const int do_tailcallopt = iseq->compile_data->option->tailcall_optimization;
-    const int do_si = iseq->compile_data->option->specialized_instruction;
-    const int do_ou = iseq->compile_data->option->operands_unification;
+    const int do_peepholeopt = ISEQ_COMPILE_DATA(iseq)->option->peephole_optimization;
+    const int do_tailcallopt = tailcallable_p(iseq) &&
+	ISEQ_COMPILE_DATA(iseq)->option->tailcall_optimization;
+    const int do_si = ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction;
+    const int do_ou = ISEQ_COMPILE_DATA(iseq)->option->operands_unification;
+    int rescue_level = 0;
+    int tailcallopt = do_tailcallopt;
+
     list = FIRST_ELEMENT(anchor);
 
     while (list) {
-	if (list->type == ISEQ_ELEMENT_INSN) {
+	if (IS_INSN(list)) {
 	    if (do_peepholeopt) {
-		iseq_peephole_optimize(iseq, list, do_tailcallopt);
+		iseq_peephole_optimize(iseq, list, tailcallopt);
 	    }
 	    if (do_si) {
 		iseq_specialized_instruction(iseq, (INSN *)list);
@@ -1889,6 +3545,17 @@ iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 		insn_operands_unification((INSN *)list);
 	    }
 	}
+	if (IS_LABEL(list)) {
+	    switch (((LABEL *)list)->rescued) {
+	      case LABEL_RESCUE_BEG:
+		rescue_level++;
+		tailcallopt = FALSE;
+		break;
+	      case LABEL_RESCUE_END:
+		if (!--rescue_level) tailcallopt = do_tailcallopt;
+		break;
+	    }
+	}
 	list = list->next;
     }
     return COMPILE_OK;
@@ -1913,8 +3580,7 @@ new_unified_insn(rb_iseq_t *iseq,
     }
 
     if (argc > 0) {
-	ptr = operands =
-	    (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * argc);
+	ptr = operands = compile_data_alloc2(iseq, sizeof(VALUE), argc);
     }
 
     /* copy operands */
@@ -1926,7 +3592,7 @@ new_unified_insn(rb_iseq_t *iseq,
 	list = list->next;
     }
 
-    return new_insn_core(iseq, iobj->line_no, insn_id, argc, operands);
+    return new_insn_core(iseq, iobj->insn_info.line_no, insn_id, argc, operands);
 }
 #endif
 
@@ -1936,25 +3602,26 @@ new_unified_insn(rb_iseq_t *iseq,
  * It's future work (if compile time was bottle neck).
  */
 static int
-iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
+iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 {
 #if OPT_INSTRUCTIONS_UNIFICATION
     LINK_ELEMENT *list;
     INSN *iobj, *niobj;
-    int id, j, k;
+    int id, k;
+    intptr_t j;
 
     list = FIRST_ELEMENT(anchor);
     while (list) {
-	if (list->type == ISEQ_ELEMENT_INSN) {
+	if (IS_INSN(list)) {
 	    iobj = (INSN *)list;
 	    id = iobj->insn_id;
 	    if (unified_insns_data[id] != 0) {
 		const int *const *entry = unified_insns_data[id];
-		for (j = 1; j < (int)entry[0]; j++) {
+		for (j = 1; j < (intptr_t)entry[0]; j++) {
 		    const int *unified = entry[j];
 		    LINK_ELEMENT *li = list->next;
 		    for (k = 2; k < unified[1]; k++) {
-			if (li->type != ISEQ_ELEMENT_INSN ||
+			if (!IS_INSN(li) ||
 			    ((INSN *)li)->insn_id != unified[k]) {
 			    goto miss;
 			}
@@ -1988,12 +3655,12 @@ iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 #if OPT_STACK_CACHING
 
 #define SC_INSN(insn, stat) sc_insn_info[(insn)][(stat)]
-#define SC_NEXT(insn)       sc_insn_next[insn]
+#define SC_NEXT(insn)       sc_insn_next[(insn)]
 
 #include "opt_sc.inc"
 
 static int
-insn_set_sc_state(rb_iseq_t *iseq, INSN *iobj, int state)
+insn_set_sc_state(rb_iseq_t *iseq, const LINK_ELEMENT *anchor, INSN *iobj, int state)
 {
     int nstate;
     int insn_id;
@@ -2008,12 +3675,12 @@ insn_set_sc_state(rb_iseq_t *iseq, INSN *iobj, int state)
 
 	if (lobj->sc_state != 0) {
 	    if (lobj->sc_state != nstate) {
-		dump_disasm_list((LINK_ELEMENT *)iobj);
-		dump_disasm_list((LINK_ELEMENT *)lobj);
-		printf("\n-- %d, %d\n", lobj->sc_state, nstate);
-		rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
-				 "insn_set_sc_state error\n");
-		return 0;
+		BADINSN_DUMP(anchor, iobj, lobj);
+		COMPILE_ERROR(iseq, iobj->insn_info.line_no,
+			      "insn_set_sc_state error: %d at "LABEL_FORMAT
+			      ", %d expected\n",
+			      lobj->sc_state, lobj->label_no, nstate);
+		return COMPILE_NG;
 	    }
 	}
 	else {
@@ -2049,7 +3716,7 @@ label_set_sc_state(LABEL *lobj, int state)
 #endif
 
 static int
-iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
+iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 {
 #if OPT_STACK_CACHING
     LINK_ELEMENT *list;
@@ -2080,7 +3747,7 @@ iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 				new_insn_body(iseq, 0, BIN(reput), 0);
 
 			    /* replace this insn */
-			    REPLACE_ELEM(list, (LINK_ELEMENT *)rpobj);
+			    ELEM_REPLACE(list, (LINK_ELEMENT *)rpobj);
 			    list = (LINK_ELEMENT *)rpobj;
 			    goto redo_point;
 			}
@@ -2091,7 +3758,7 @@ iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 			if (state == SCS_AB || state == SCS_BA) {
 			    state = (state == SCS_AB ? SCS_BA : SCS_AB);
 
-			    REMOVE_ELEM(list);
+			    ELEM_REMOVE(list);
 			    list = list->next;
 			    goto redo_point;
 			}
@@ -2113,11 +3780,12 @@ iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 			  case SCS_XX:
 			    goto normal_insn;
 			  default:
-			    rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
-					     "unreachable");
+			    COMPILE_ERROR(iseq, iobj->insn_info.line_no,
+					  "unreachable");
+			    return COMPILE_NG;
 			}
 			/* remove useless pop */
-			REMOVE_ELEM(list);
+			ELEM_REMOVE(list);
 			list = list->next;
 			goto redo_point;
 		    }
@@ -2125,7 +3793,7 @@ iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 		    /* none */
 		}		/* end of switch */
 	      normal_insn:
-		state = insn_set_sc_state(iseq, iobj, state);
+		state = insn_set_sc_state(iseq, anchor, iobj, state);
 		break;
 	    }
 	  case ISEQ_ELEMENT_LABEL:
@@ -2144,231 +3812,817 @@ iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
     return COMPILE_OK;
 }
 
-
+static int
+all_string_result_p(const NODE *node)
+{
+    if (!node) return FALSE;
+    switch (nd_type(node)) {
+      case NODE_STR: case NODE_DSTR:
+	return TRUE;
+      case NODE_IF: case NODE_UNLESS:
+	if (!node->nd_body || !node->nd_else) return FALSE;
+	if (all_string_result_p(node->nd_body))
+	    return all_string_result_p(node->nd_else);
+	return FALSE;
+      case NODE_AND: case NODE_OR:
+	if (!node->nd_2nd)
+	    return all_string_result_p(node->nd_1st);
+	if (!all_string_result_p(node->nd_1st))
+	    return FALSE;
+	return all_string_result_p(node->nd_2nd);
+      default:
+	return FALSE;
+    }
+}
 
 static int
-compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int *cntp)
+compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int *cntp)
 {
-    NODE *list = node->nd_next;
+    const NODE *list = node->nd_next;
     VALUE lit = node->nd_lit;
-    int cnt = 1;
+    LINK_ELEMENT *first_lit = 0;
+    int cnt = 0;
 
     debugp_param("nd_lit", lit);
-    ADD_INSN1(ret, nd_line(node), putobject, node->nd_lit);
+    if (!NIL_P(lit)) {
+	cnt++;
+	if (!RB_TYPE_P(lit, T_STRING)) {
+	    COMPILE_ERROR(ERROR_ARGS "dstr: must be string: %s",
+			  rb_builtin_type_name(TYPE(lit)));
+	    return COMPILE_NG;
+	}
+	lit = rb_fstring(lit);
+	ADD_INSN1(ret, nd_line(node), putobject, lit);
+        RB_OBJ_WRITTEN(iseq, Qundef, lit);
+	if (RSTRING_LEN(lit) == 0) first_lit = LAST_ELEMENT(ret);
+    }
 
     while (list) {
-	COMPILE(ret, "each string", list->nd_head);
+	const NODE *const head = list->nd_head;
+	if (nd_type(head) == NODE_STR) {
+	    lit = rb_fstring(head->nd_lit);
+	    ADD_INSN1(ret, nd_line(head), putobject, lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
+	    lit = Qnil;
+	}
+	else {
+	    CHECK(COMPILE(ret, "each string", head));
+	}
 	cnt++;
 	list = list->nd_next;
     }
+    if (NIL_P(lit) && first_lit) {
+	ELEM_REMOVE(first_lit);
+	--cnt;
+    }
     *cntp = cnt;
 
     return COMPILE_OK;
 }
 
 static int
-compile_dstr(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node)
+compile_dstr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
 {
     int cnt;
-    compile_dstr_fragments(iseq, ret, node, &cnt);
-    ADD_INSN1(ret, nd_line(node), concatstrings, INT2FIX(cnt));
+    if (!node->nd_next) {
+        VALUE lit = rb_fstring(node->nd_lit);
+        const int line = (int)nd_line(node);
+        ADD_INSN1(ret, line, putstring, lit);
+        RB_OBJ_WRITTEN(iseq, Qundef, lit);
+    }
+    else {
+        CHECK(compile_dstr_fragments(iseq, ret, node, &cnt));
+        ADD_INSN1(ret, nd_line(node), concatstrings, INT2FIX(cnt));
+    }
     return COMPILE_OK;
 }
 
 static int
-compile_dregx(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node)
+compile_dregx(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
 {
     int cnt;
-    compile_dstr_fragments(iseq, ret, node, &cnt);
+    CHECK(compile_dstr_fragments(iseq, ret, node, &cnt));
     ADD_INSN2(ret, nd_line(node), toregexp, INT2FIX(node->nd_cflag), INT2FIX(cnt));
     return COMPILE_OK;
 }
 
 static int
-compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * cond,
+compile_flip_flop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int again,
+		  LABEL *then_label, LABEL *else_label)
+{
+    const int line = nd_line(node);
+    LABEL *lend = NEW_LABEL(line);
+    rb_num_t cnt = ISEQ_FLIP_CNT_INCREMENT(iseq->body->local_iseq)
+	+ VM_SVAR_FLIPFLOP_START;
+    VALUE key = INT2FIX(cnt);
+
+    ADD_INSN2(ret, line, getspecial, key, INT2FIX(0));
+    ADD_INSNL(ret, line, branchif, lend);
+
+    /* *flip == 0 */
+    CHECK(COMPILE(ret, "flip2 beg", node->nd_beg));
+    ADD_INSNL(ret, line, branchunless, else_label);
+    ADD_INSN1(ret, line, putobject, Qtrue);
+    ADD_INSN1(ret, line, setspecial, key);
+    if (!again) {
+	ADD_INSNL(ret, line, jump, then_label);
+    }
+
+    /* *flip == 1 */
+    ADD_LABEL(ret, lend);
+    CHECK(COMPILE(ret, "flip2 end", node->nd_end));
+    ADD_INSNL(ret, line, branchunless, then_label);
+    ADD_INSN1(ret, line, putobject, Qfalse);
+    ADD_INSN1(ret, line, setspecial, key);
+    ADD_INSNL(ret, line, jump, then_label);
+
+    return COMPILE_OK;
+}
+
+static int
+compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *cond,
 			 LABEL *then_label, LABEL *else_label)
 {
+  again:
     switch (nd_type(cond)) {
       case NODE_AND:
 	{
 	    LABEL *label = NEW_LABEL(nd_line(cond));
-	    compile_branch_condition(iseq, ret, cond->nd_1st, label,
-				     else_label);
+	    CHECK(compile_branch_condition(iseq, ret, cond->nd_1st, label,
+					   else_label));
+            if (!label->refcnt) {
+                ADD_INSN(ret, nd_line(cond), putnil);
+                break;
+            }
 	    ADD_LABEL(ret, label);
-	    compile_branch_condition(iseq, ret, cond->nd_2nd, then_label,
-				     else_label);
-	    break;
+	    cond = cond->nd_2nd;
+	    goto again;
 	}
       case NODE_OR:
 	{
 	    LABEL *label = NEW_LABEL(nd_line(cond));
-	    compile_branch_condition(iseq, ret, cond->nd_1st, then_label,
-				     label);
+	    CHECK(compile_branch_condition(iseq, ret, cond->nd_1st, then_label,
+					   label));
+            if (!label->refcnt) {
+                ADD_INSN(ret, nd_line(cond), putnil);
+                break;
+            }
 	    ADD_LABEL(ret, label);
-	    compile_branch_condition(iseq, ret, cond->nd_2nd, then_label,
-				     else_label);
-	    break;
+	    cond = cond->nd_2nd;
+	    goto again;
 	}
-      case NODE_LIT:		/* NODE_LIT is always not true */
+      case NODE_LIT:		/* NODE_LIT is always true */
       case NODE_TRUE:
       case NODE_STR:
-	/* printf("useless conditon eliminate (%s)\n",  ruby_node_name(nd_type(cond))); */
+      case NODE_ZLIST:
+      case NODE_LAMBDA:
+	/* printf("useless condition eliminate (%s)\n",  ruby_node_name(nd_type(cond))); */
 	ADD_INSNL(ret, nd_line(cond), jump, then_label);
-	break;
+        return COMPILE_OK;
       case NODE_FALSE:
       case NODE_NIL:
-	/* printf("useless conditon eliminate (%s)\n", ruby_node_name(nd_type(cond))); */
+	/* printf("useless condition eliminate (%s)\n", ruby_node_name(nd_type(cond))); */
 	ADD_INSNL(ret, nd_line(cond), jump, else_label);
-	break;
-      default:
-	COMPILE(ret, "branch condition", cond);
-	ADD_INSNL(ret, nd_line(cond), branchunless, else_label);
+        return COMPILE_OK;
+      case NODE_LIST:
+      case NODE_ARGSCAT:
+      case NODE_DREGX:
+      case NODE_DSTR:
+	CHECK(COMPILE_POPPED(ret, "branch condition", cond));
 	ADD_INSNL(ret, nd_line(cond), jump, then_label);
-	break;
+        return COMPILE_OK;
+      case NODE_FLIP2:
+	CHECK(compile_flip_flop(iseq, ret, cond, TRUE, then_label, else_label));
+        return COMPILE_OK;
+      case NODE_FLIP3:
+	CHECK(compile_flip_flop(iseq, ret, cond, FALSE, then_label, else_label));
+        return COMPILE_OK;
+      case NODE_DEFINED:
+	CHECK(compile_defined_expr(iseq, ret, cond, Qfalse));
+        break;
+      default:
+	CHECK(COMPILE(ret, "branch condition", cond));
+        break;
     }
+
+    ADD_INSNL(ret, nd_line(cond), branchunless, else_label);
+    ADD_INSNL(ret, nd_line(cond), jump, then_label);
     return COMPILE_OK;
 }
 
+#define HASH_BRACE 1
+
 static int
-compile_array_(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE* node_root,
-	       VALUE opt_p, int poped)
+keyword_node_p(const NODE *const node)
 {
-    NODE *node = node_root;
-    int len = node->nd_alen, line = nd_line(node), i=0;
-    DECL_ANCHOR(anchor);
+    return nd_type(node) == NODE_HASH && (node->nd_brace & HASH_BRACE) != HASH_BRACE;
+}
+
+static int
+compile_keyword_arg(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
+			  const NODE *const root_node,
+			  struct rb_callinfo_kwarg **const kw_arg_ptr,
+			  unsigned int *flag)
+{
+    if (kw_arg_ptr == NULL) return FALSE;
+
+    if (root_node->nd_head && nd_type(root_node->nd_head) == NODE_LIST) {
+	const NODE *node = root_node->nd_head;
+        int seen_nodes = 0;
 
-    INIT_ANCHOR(anchor);
-    if (nd_type(node) != NODE_ZARRAY) {
 	while (node) {
-	    if (nd_type(node) != NODE_ARRAY) {
-		rb_bug("compile_array: This node is not NODE_ARRAY, but %s",
-		       ruby_node_name(nd_type(node)));
-	    }
+	    const NODE *key_node = node->nd_head;
+            seen_nodes++;
 
-	    i++;
-	    if (opt_p && nd_type(node->nd_head) != NODE_LIT) {
-		opt_p = Qfalse;
+	    assert(nd_type(node) == NODE_LIST);
+            if (key_node && nd_type(key_node) == NODE_LIT && RB_TYPE_P(key_node->nd_lit, T_SYMBOL)) {
+		/* can be keywords */
+	    }
+	    else {
+                if (flag) {
+                    *flag |= VM_CALL_KW_SPLAT;
+                    if (seen_nodes > 1 || node->nd_next->nd_next) {
+                        /* A new hash will be created for the keyword arguments
+                         * in this case, so mark the method as passing mutable
+                         * keyword splat.
+                         */
+                        *flag |= VM_CALL_KW_SPLAT_MUT;
+                    }
+                }
+		return FALSE;
 	    }
-	    COMPILE_(anchor, "array element", node->nd_head, poped);
+	    node = node->nd_next; /* skip value node */
 	    node = node->nd_next;
 	}
-    }
 
-    if (len != i) {
-	if (0) {
-	    rb_bug("node error: compile_array (%d: %d-%d)",
-		   (int)nd_line(node_root), len, i);
+	/* may be keywords */
+	node = root_node->nd_head;
+	{
+	    int len = (int)node->nd_alen / 2;
+            struct rb_callinfo_kwarg *kw_arg =
+                rb_xmalloc_mul_add(len, sizeof(VALUE), sizeof(struct rb_callinfo_kwarg));
+	    VALUE *keywords = kw_arg->keywords;
+	    int i = 0;
+	    kw_arg->keyword_len = len;
+
+	    *kw_arg_ptr = kw_arg;
+
+	    for (i=0; node != NULL; i++, node = node->nd_next->nd_next) {
+		const NODE *key_node = node->nd_head;
+		const NODE *val_node = node->nd_next->nd_head;
+		keywords[i] = key_node->nd_lit;
+                NO_CHECK(COMPILE(ret, "keyword values", val_node));
+	    }
+	    assert(i == len);
+	    return TRUE;
 	}
-	len = i;
     }
+    return FALSE;
+}
 
-    if (opt_p == Qtrue) {
-	if (!poped) {
-	    VALUE ary = rb_ary_tmp_new(len);
-	    node = node_root;
-	    while (node) {
-		rb_ary_push(ary, node->nd_head->nd_lit);
-		node = node->nd_next;
-	    }
+static int
+compile_args(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node,
+                   struct rb_callinfo_kwarg **keywords_ptr, unsigned int *flag)
+{
+    int len = 0;
+
+    for (; node; len++, node = node->nd_next) {
+        if (CPDEBUG > 0) {
+            EXPECT_NODE("compile_args", node, NODE_LIST, -1);
+        }
+
+        if (node->nd_next == NULL && keyword_node_p(node->nd_head)) { /* last node */
+            if (compile_keyword_arg(iseq, ret, node->nd_head, keywords_ptr, flag)) {
+                len--;
+            }
+            else {
+                compile_hash(iseq, ret, node->nd_head, TRUE, FALSE);
+            }
+        }
+        else {
+            NO_CHECK(COMPILE_(ret, "array element", node->nd_head, FALSE));
+        }
+    }
 
-	    iseq_add_mark_object_compile_time(iseq, ary);
-	    ADD_INSN1(ret, nd_line(node_root), duparray, ary);
-	}
+    return len;
+}
+
+static inline int
+static_literal_node_p(const NODE *node, const rb_iseq_t *iseq)
+{
+    node = node->nd_head;
+    switch (nd_type(node)) {
+      case NODE_LIT:
+      case NODE_NIL:
+      case NODE_TRUE:
+      case NODE_FALSE:
+	return TRUE;
+      case NODE_STR:
+        return ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal;
+      default:
+	return FALSE;
     }
-    else {
-	if (!poped) {
-	    ADD_INSN1(anchor, line, newarray, INT2FIX(len));
+}
+
+static inline VALUE
+static_literal_value(const NODE *node, rb_iseq_t *iseq)
+{
+    node = node->nd_head;
+    switch (nd_type(node)) {
+      case NODE_NIL:
+	return Qnil;
+      case NODE_TRUE:
+	return Qtrue;
+      case NODE_FALSE:
+	return Qfalse;
+      case NODE_STR:
+        if (ISEQ_COMPILE_DATA(iseq)->option->debug_frozen_string_literal || RTEST(ruby_debug)) {
+            VALUE lit;
+            VALUE debug_info = rb_ary_new_from_args(2, rb_iseq_path(iseq), INT2FIX((int)nd_line(node)));
+            lit = rb_str_dup(node->nd_lit);
+            rb_ivar_set(lit, id_debug_created_info, rb_obj_freeze(debug_info));
+            return rb_str_freeze(lit);
+        }
+        else {
+            return rb_fstring(node->nd_lit);
+        }
+      default:
+	return node->nd_lit;
+    }
+}
+
+static int
+compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped)
+{
+    int line = (int)nd_line(node);
+
+    if (nd_type(node) == NODE_ZLIST) {
+	if (!popped) {
+	    ADD_INSN1(ret, line, newarray, INT2FIX(0));
 	}
-	APPEND_LIST(ret, anchor);
+        return 0;
     }
-    return len;
+
+    EXPECT_NODE("compile_array", node, NODE_LIST, -1);
+
+    if (popped) {
+        for (; node; node = node->nd_next) {
+            NO_CHECK(COMPILE_(ret, "array element", node->nd_head, popped));
+        }
+        return 1;
+    }
+
+    /* Compilation of an array literal.
+     * The following code is essentially the same as:
+     *
+     *     for (int count = 0; node; count++; node->nd_next) {
+     *         compile(node->nd_head);
+     *     }
+     *     ADD_INSN(newarray, count);
+     *
+     * However, there are three points.
+     *
+     * - The code above causes stack overflow for a big string literal.
+     *   The following limits the stack length up to max_stack_len.
+     *
+     *   [x1,x2,...,x10000] =>
+     *     push x1  ; push x2  ; ...; push x256; newarray 256;
+     *     push x257; push x258; ...; push x512; newarray 256; concatarray;
+     *     push x513; push x514; ...; push x768; newarray 256; concatarray;
+     *     ...
+     *
+     * - Long subarray can be optimized by pre-allocating a hidden array.
+     *
+     *   [1,2,3,...,100] =>
+     *     duparray [1,2,3,...,100]
+     *
+     *   [x, 1,2,3,...,100, z] =>
+     *     push x; newarray 1;
+     *     putobject [1,2,3,...,100] (<- hidden array); concatarray;
+     *     push z; newarray 1; concatarray
+     *
+     * - If the last element is a keyword, newarraykwsplat should be emitted
+     *   to check and remove empty keyword arguments hash from array.
+     *   (Note: a keyword is NODE_HASH which is not static_literal_node_p.)
+     *
+     *   [1,2,3,**kw] =>
+     *     putobject 1; putobject 2; putobject 3; push kw; newarraykwsplat
+     */
+
+    const int max_stack_len = 0x100;
+    const int min_tmp_ary_len = 0x40;
+    int stack_len = 0;
+    int first_chunk = 1;
+
+    /* Convert pushed elements to an array, and concatarray if needed */
+#define FLUSH_CHUNK(newarrayinsn)                               \
+    if (stack_len) {                                            \
+        ADD_INSN1(ret, line, newarrayinsn, INT2FIX(stack_len)); \
+        if (!first_chunk) ADD_INSN(ret, line, concatarray);     \
+        first_chunk = stack_len = 0;                            \
+    }
+
+    while (node) {
+        int count = 1;
+
+        /* pre-allocation check (this branch can be omittable) */
+        if (static_literal_node_p(node, iseq)) {
+            /* count the elements that are optimizable */
+            const NODE *node_tmp = node->nd_next;
+            for (; node_tmp && static_literal_node_p(node_tmp, iseq); node_tmp = node_tmp->nd_next)
+                count++;
+
+            if ((first_chunk && stack_len == 0 && !node_tmp) || count >= min_tmp_ary_len) {
+                /* The literal contains only optimizable elements, or the subarray is long enough */
+                VALUE ary = rb_ary_tmp_new(count);
+
+                /* Create a hidden array */
+                for (; count; count--, node = node->nd_next)
+                    rb_ary_push(ary, static_literal_value(node, iseq));
+                OBJ_FREEZE(ary);
+
+                /* Emit optimized code */
+                FLUSH_CHUNK(newarray);
+                if (first_chunk) {
+                    ADD_INSN1(ret, line, duparray, ary);
+                    first_chunk = 0;
+                }
+                else {
+                    ADD_INSN1(ret, line, putobject, ary);
+                    ADD_INSN(ret, line, concatarray);
+                }
+                RB_OBJ_WRITTEN(iseq, Qundef, ary);
+            }
+        }
+
+        /* Base case: Compile "count" elements */
+        for (; count; count--, node = node->nd_next) {
+            if (CPDEBUG > 0) {
+                EXPECT_NODE("compile_array", node, NODE_LIST, -1);
+            }
+
+            NO_CHECK(COMPILE_(ret, "array element", node->nd_head, 0));
+            stack_len++;
+
+            if (!node->nd_next && keyword_node_p(node->nd_head)) {
+                /* Reached the end, and the last element is a keyword */
+                FLUSH_CHUNK(newarraykwsplat);
+                return 1;
+            }
+
+            /* If there are many pushed elements, flush them to avoid stack overflow */
+            if (stack_len >= max_stack_len) FLUSH_CHUNK(newarray);
+        }
+    }
+
+    FLUSH_CHUNK(newarray);
+#undef FLUSH_CHUNK
+    return 1;
 }
 
-static VALUE
-compile_array(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE* node_root, VALUE opt_p)
+static inline int
+static_literal_node_pair_p(const NODE *node, const rb_iseq_t *iseq)
 {
-    return compile_array_(iseq, ret, node_root, opt_p, 0);
+    return node->nd_head && static_literal_node_p(node, iseq) && static_literal_node_p(node->nd_next, iseq);
 }
 
-static VALUE
-case_when_optimizable_literal(NODE * node)
+static int
+compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int method_call_keywords, int popped)
+{
+    int line = (int)nd_line(node);
+
+    node = node->nd_head;
+
+    if (!node || nd_type(node) == NODE_ZLIST) {
+	if (!popped) {
+	    ADD_INSN1(ret, line, newhash, INT2FIX(0));
+	}
+        return 0;
+    }
+
+    EXPECT_NODE("compile_hash", node, NODE_LIST, -1);
+
+    if (popped) {
+        for (; node; node = node->nd_next) {
+            NO_CHECK(COMPILE_(ret, "hash element", node->nd_head, popped));
+        }
+        return 1;
+    }
+
+    /* Compilation of a hash literal (or keyword arguments).
+     * This is very similar to compile_array, but there are some differences:
+     *
+     * - It contains key-value pairs.  So we need to take every two elements.
+     *   We can assume that the length is always even.
+     *
+     * - Merging is done by a method call (id_core_hash_merge_ptr).
+     *   Sometimes we need to insert the receiver, so "anchor" is needed.
+     *   In addition, a method call is much slower than concatarray.
+     *   So it pays only when the subsequence is really long.
+     *   (min_tmp_hash_len must be much larger than min_tmp_ary_len.)
+     *
+     * - We need to handle keyword splat: **kw.
+     *   For **kw, the key part (node->nd_head) is NULL, and the value part
+     *   (node->nd_next->nd_head) is "kw".
+     *   The code is a bit difficult to avoid hash allocation for **{}.
+     */
+
+    const int max_stack_len = 0x100;
+    const int min_tmp_hash_len = 0x800;
+    int stack_len = 0;
+    int first_chunk = 1;
+    DECL_ANCHOR(anchor);
+    INIT_ANCHOR(anchor);
+
+    /* Convert pushed elements to a hash, and merge if needed */
+#define FLUSH_CHUNK()                                                                   \
+    if (stack_len) {                                                                    \
+        if (first_chunk) {                                                              \
+            APPEND_LIST(ret, anchor);                                                   \
+            ADD_INSN1(ret, line, newhash, INT2FIX(stack_len));                          \
+        }                                                                               \
+        else {                                                                          \
+            ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));  \
+            ADD_INSN(ret, line, swap);                                                  \
+            APPEND_LIST(ret, anchor);                                                   \
+            ADD_SEND(ret, line, id_core_hash_merge_ptr, INT2FIX(stack_len + 1));        \
+        }                                                                               \
+        INIT_ANCHOR(anchor);                                                            \
+        first_chunk = stack_len = 0;                                                    \
+    }
+
+    while (node) {
+        int count = 1;
+
+        /* pre-allocation check (this branch can be omittable) */
+        if (static_literal_node_pair_p(node, iseq)) {
+            /* count the elements that are optimizable */
+            const NODE *node_tmp = node->nd_next->nd_next;
+            for (; node_tmp && static_literal_node_pair_p(node_tmp, iseq); node_tmp = node_tmp->nd_next->nd_next)
+                count++;
+
+            if ((first_chunk && stack_len == 0 && !node_tmp) || count >= min_tmp_hash_len) {
+                /* The literal contains only optimizable elements, or the subsequence is long enough */
+                VALUE ary = rb_ary_tmp_new(count);
+
+                /* Create a hidden hash */
+                for (; count; count--, node = node->nd_next->nd_next) {
+                    VALUE elem[2];
+                    elem[0] = static_literal_value(node, iseq);
+                    elem[1] = static_literal_value(node->nd_next, iseq);
+                    rb_ary_cat(ary, elem, 2);
+                }
+                VALUE hash = rb_hash_new_with_size(RARRAY_LEN(ary) / 2);
+                rb_hash_bulk_insert(RARRAY_LEN(ary), RARRAY_CONST_PTR_TRANSIENT(ary), hash);
+                hash = rb_obj_hide(hash);
+                OBJ_FREEZE(hash);
+
+                /* Emit optimized code */
+                FLUSH_CHUNK();
+                if (first_chunk) {
+                    ADD_INSN1(ret, line, duphash, hash);
+                    first_chunk = 0;
+                }
+                else {
+                    ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+                    ADD_INSN(ret, line, swap);
+
+                    ADD_INSN1(ret, line, putobject, hash);
+
+                    ADD_SEND(ret, line, id_core_hash_merge_kwd, INT2FIX(2));
+                }
+                RB_OBJ_WRITTEN(iseq, Qundef, hash);
+            }
+        }
+
+        /* Base case: Compile "count" elements */
+        for (; count; count--, node = node->nd_next->nd_next) {
+
+            if (CPDEBUG > 0) {
+                EXPECT_NODE("compile_hash", node, NODE_LIST, -1);
+            }
+
+            if (node->nd_head) {
+                /* Normal key-value pair */
+                NO_CHECK(COMPILE_(anchor, "hash key element", node->nd_head, 0));
+                NO_CHECK(COMPILE_(anchor, "hash value element", node->nd_next->nd_head, 0));
+                stack_len += 2;
+
+                /* If there are many pushed elements, flush them to avoid stack overflow */
+                if (stack_len >= max_stack_len) FLUSH_CHUNK();
+            }
+            else {
+                /* kwsplat case: foo(..., **kw, ...) */
+                FLUSH_CHUNK();
+
+                const NODE *kw = node->nd_next->nd_head;
+                int empty_kw = nd_type(kw) == NODE_LIT && RB_TYPE_P(kw->nd_lit, T_HASH); /* foo(  ..., **{}, ...) */
+                int first_kw = first_chunk && stack_len == 0; /* foo(1,2,3, **kw, ...) */
+                int last_kw = !node->nd_next->nd_next;        /* foo(  ..., **kw) */
+                int only_kw = last_kw && first_kw;            /* foo(1,2,3, **kw) */
+
+                if (empty_kw) {
+                    if (only_kw && method_call_keywords) {
+                        /* **{} appears at the only keyword argument in method call,
+                         * so it won't be modified.
+                         * kw is a special NODE_LIT that contains a special empty hash,
+                         * so this emits: putobject {}.
+                         * This is only done for method calls and not for literal hashes,
+                         * because literal hashes should always result in a new hash.
+                         */
+                        NO_CHECK(COMPILE(ret, "keyword splat", kw));
+                    }
+                    else if (first_kw) {
+                        /* **{} appears as the first keyword argument, so it may be modified.
+                         * We need to create a fresh hash object.
+                         */
+                        ADD_INSN1(ret, line, newhash, INT2FIX(0));
+                    }
+                    /* Any empty keyword splats that are not the first can be ignored.
+                     * since merging an empty hash into the existing hash is the same
+                     * as not merging it. */
+                }
+                else {
+                    if (only_kw && method_call_keywords) {
+                        /* **kw is only keyword argument in method call.
+                         * Use directly.  This will be not be flagged as mutable.
+                         * This is only done for method calls and not for literal hashes,
+                         * because literal hashes should always result in a new hash.
+                         */
+                        NO_CHECK(COMPILE(ret, "keyword splat", kw));
+                    }
+                    else {
+                        /* There is more than one keyword argument, or this is not a method
+                         * call.  In that case, we need to add an empty hash (if first keyword),
+                         * or merge the hash to the accumulated hash (if not the first keyword).
+                         */
+                        ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+                        if (first_kw) ADD_INSN1(ret, line, newhash, INT2FIX(0));
+                        else ADD_INSN(ret, line, swap);
+
+                        NO_CHECK(COMPILE(ret, "keyword splat", kw));
+
+                        ADD_SEND(ret, line, id_core_hash_merge_kwd, INT2FIX(2));
+                    }
+                }
+
+                first_chunk = 0;
+            }
+        }
+    }
+
+    FLUSH_CHUNK();
+#undef FLUSH_CHUNK
+    return 1;
+}
+
+VALUE
+rb_node_case_when_optimizable_literal(const NODE *const node)
 {
     switch (nd_type(node)) {
       case NODE_LIT: {
 	VALUE v = node->nd_lit;
+	double ival;
+	if (RB_TYPE_P(v, T_FLOAT) &&
+	    modf(RFLOAT_VALUE(v), &ival) == 0.0) {
+	    return FIXABLE(ival) ? LONG2FIX((long)ival) : rb_dbl2big(ival);
+	}
 	if (SYMBOL_P(v) || rb_obj_is_kind_of(v, rb_cNumeric)) {
 	    return v;
 	}
 	break;
       }
+      case NODE_NIL:
+	return Qnil;
+      case NODE_TRUE:
+	return Qtrue;
+      case NODE_FALSE:
+	return Qfalse;
       case NODE_STR:
-	return node->nd_lit;
+	return rb_fstring(node->nd_lit);
     }
-    return Qfalse;
+    return Qundef;
 }
 
-static VALUE
-when_vals(rb_iseq_t *iseq, LINK_ANCHOR *cond_seq, NODE *vals, LABEL *l1, VALUE special_literals)
+static int
+when_vals(rb_iseq_t *iseq, LINK_ANCHOR *const cond_seq, const NODE *vals,
+	  LABEL *l1, int only_special_literals, VALUE literals)
 {
     while (vals) {
-	VALUE lit;
-	NODE* val;
+	const NODE *val = vals->nd_head;
+        VALUE lit = rb_node_case_when_optimizable_literal(val);
+
+	if (lit == Qundef) {
+	    only_special_literals = 0;
+	}
+        else if (NIL_P(rb_hash_lookup(literals, lit))) {
+            rb_hash_aset(literals, lit, (VALUE)(l1) | 1);
+	}
 
-	val = vals->nd_head;
+	ADD_INSN(cond_seq, nd_line(val), dup); /* dup target */
 
-	if (special_literals &&
-	    (lit = case_when_optimizable_literal(val)) != Qfalse) {
-	    rb_ary_push(special_literals, lit);
-	    rb_ary_push(special_literals, (VALUE)(l1) | 1);
+	if (nd_type(val) == NODE_STR) {
+	    debugp_param("nd_lit", val->nd_lit);
+	    lit = rb_fstring(val->nd_lit);
+	    ADD_INSN1(cond_seq, nd_line(val), putobject, lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
 	}
 	else {
-	    special_literals = Qfalse;
+	    if (!COMPILE(cond_seq, "when cond", val)) return -1;
 	}
 
-	COMPILE(cond_seq, "when cond", val);
-	ADD_INSN1(cond_seq, nd_line(val), topn, INT2FIX(1));
-	ADD_SEND(cond_seq, nd_line(val), ID2SYM(idEqq), INT2FIX(1));
+	ADD_INSN1(cond_seq, nd_line(vals), checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
 	ADD_INSNL(cond_seq, nd_line(val), branchif, l1);
 	vals = vals->nd_next;
     }
-    return special_literals;
+    return only_special_literals;
 }
 
 static int
-compile_massign_lhs(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node)
+when_splat_vals(rb_iseq_t *iseq, LINK_ANCHOR *const cond_seq, const NODE *vals,
+                LABEL *l1, int only_special_literals, VALUE literals)
+{
+    const int line = nd_line(vals);
+
+    switch (nd_type(vals)) {
+      case NODE_LIST:
+        if (when_vals(iseq, cond_seq, vals, l1, only_special_literals, literals) < 0)
+            return COMPILE_NG;
+        break;
+      case NODE_SPLAT:
+        ADD_INSN (cond_seq, line, dup);
+        CHECK(COMPILE(cond_seq, "when splat", vals->nd_head));
+        ADD_INSN1(cond_seq, line, splatarray, Qfalse);
+        ADD_INSN1(cond_seq, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE | VM_CHECKMATCH_ARRAY));
+        ADD_INSNL(cond_seq, line, branchif, l1);
+        break;
+      case NODE_ARGSCAT:
+        CHECK(when_splat_vals(iseq, cond_seq, vals->nd_head, l1, only_special_literals, literals));
+        CHECK(when_splat_vals(iseq, cond_seq, vals->nd_body, l1, only_special_literals, literals));
+        break;
+      case NODE_ARGSPUSH:
+        CHECK(when_splat_vals(iseq, cond_seq, vals->nd_head, l1, only_special_literals, literals));
+        ADD_INSN (cond_seq, line, dup);
+        CHECK(COMPILE(cond_seq, "when argspush body", vals->nd_body));
+        ADD_INSN1(cond_seq, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
+        ADD_INSNL(cond_seq, line, branchif, l1);
+        break;
+      default:
+        ADD_INSN (cond_seq, line, dup);
+        CHECK(COMPILE(cond_seq, "when val", vals));
+        ADD_INSN1(cond_seq, line, splatarray, Qfalse);
+        ADD_INSN1(cond_seq, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE | VM_CHECKMATCH_ARRAY));
+        ADD_INSNL(cond_seq, line, branchif, l1);
+        break;
+    }
+    return COMPILE_OK;
+}
+
+
+static int
+compile_massign_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
 {
     switch (nd_type(node)) {
       case NODE_ATTRASGN: {
 	INSN *iobj;
 	VALUE dupidx;
-
-	COMPILE_POPED(ret, "masgn lhs (NODE_ATTRASGN)", node);
-	POP_ELEMENT(ret);        /* pop pop insn */
-	iobj = (INSN *)POP_ELEMENT(ret); /* pop send insn */
-
-	dupidx = iobj->operands[1];
-	dupidx = INT2FIX(FIX2INT(dupidx) + 1);
-	iobj->operands[1] = dupidx;
-
-	ADD_INSN1(ret, nd_line(node), topn, dupidx);
-	ADD_ELEM(ret, (LINK_ELEMENT *)iobj);
-	ADD_INSN(ret, nd_line(node), pop);	/* result */
-	ADD_INSN(ret, nd_line(node), pop);	/* rhs    */
+	int line = nd_line(node);
+
+	CHECK(COMPILE_POPPED(ret, "masgn lhs (NODE_ATTRASGN)", node));
+
+	iobj = (INSN *)get_prev_insn((INSN *)LAST_ELEMENT(ret)); /* send insn */
+        const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(iobj, 0);
+        int argc = vm_ci_argc(ci) + 1;
+        ci = ci_argc_set(iseq, ci, argc);
+        OPERAND_AT(iobj, 0) = (VALUE)ci;
+        RB_OBJ_WRITTEN(iseq, Qundef, ci);
+        dupidx = INT2FIX(argc);
+
+	INSERT_BEFORE_INSN1(iobj, line, topn, dupidx);
+	if (vm_ci_flag(ci) & VM_CALL_ARGS_SPLAT) {
+            int argc = vm_ci_argc(ci);
+            ci = ci_argc_set(iseq, ci, argc - 1);
+            OPERAND_AT(iobj, 0) = (VALUE)ci;
+            RB_OBJ_WRITTEN(iseq, Qundef, iobj);
+            INSERT_BEFORE_INSN1(iobj, line, newarray, INT2FIX(1));
+	    INSERT_BEFORE_INSN(iobj, line, concatarray);
+	}
+	ADD_INSN(ret, line, pop);	/* result */
 	break;
       }
       case NODE_MASGN: {
 	DECL_ANCHOR(anchor);
 	INIT_ANCHOR(anchor);
-	COMPILE_POPED(anchor, "nest masgn lhs", node);
-	REMOVE_ELEM(FIRST_ELEMENT(anchor));
+	CHECK(COMPILE_POPPED(anchor, "nest masgn lhs", node));
+	ELEM_REMOVE(FIRST_ELEMENT(anchor));
 	ADD_SEQ(ret, anchor);
 	break;
       }
       default: {
 	DECL_ANCHOR(anchor);
 	INIT_ANCHOR(anchor);
-	COMPILE_POPED(anchor, "masgn lhs", node);
-	REMOVE_ELEM(FIRST_ELEMENT(anchor));
+	CHECK(COMPILE_POPPED(anchor, "masgn lhs", node));
+	ELEM_REMOVE(FIRST_ELEMENT(anchor));
 	ADD_SEQ(ret, anchor);
       }
     }
@@ -2376,25 +4630,26 @@ compile_massign_lhs(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node)
     return COMPILE_OK;
 }
 
-static void
-compile_massign_opt_lhs(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *lhsn)
+static int
+compile_massign_opt_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *lhsn)
 {
     if (lhsn) {
-	compile_massign_opt_lhs(iseq, ret, lhsn->nd_next);
-	compile_massign_lhs(iseq, ret, lhsn->nd_head);
+	CHECK(compile_massign_opt_lhs(iseq, ret, lhsn->nd_next));
+	CHECK(compile_massign_lhs(iseq, ret, lhsn->nd_head));
     }
+    return COMPILE_OK;
 }
 
 static int
-compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *ret,
-		    NODE *rhsn, NODE *orig_lhsn)
+compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
+		    const NODE *rhsn, const NODE *orig_lhsn)
 {
     VALUE mem[64];
-    const int memsize = sizeof(mem) / sizeof(mem[0]);
+    const int memsize = numberof(mem);
     int memindex = 0;
     int llen = 0, rlen = 0;
     int i;
-    NODE *lhsn = orig_lhsn;
+    const NODE *lhsn = orig_lhsn;
 
 #define MEMORY(v) { \
     int i; \
@@ -2405,12 +4660,12 @@ compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *ret,
     mem[memindex++] = (v); \
 }
 
-    if (rhsn == 0 || nd_type(rhsn) != NODE_ARRAY) {
+    if (rhsn == 0 || nd_type(rhsn) != NODE_LIST) {
 	return 0;
     }
 
     while (lhsn) {
-	NODE *ln = lhsn->nd_head;
+	const NODE *ln = lhsn->nd_head;
 	switch (nd_type(ln)) {
 	  case NODE_LASGN:
 	    MEMORY(ln->nd_vid);
@@ -2418,7 +4673,6 @@ compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *ret,
 	  case NODE_DASGN:
 	  case NODE_DASGN_CURR:
 	  case NODE_IASGN:
-	  case NODE_IASGN2:
 	  case NODE_CVASGN:
 	    MEMORY(ln->nd_vid);
 	    break;
@@ -2431,10 +4685,10 @@ compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *ret,
 
     while (rhsn) {
 	if (llen <= rlen) {
-	    COMPILE_POPED(ret, "masgn val (poped)", rhsn->nd_head);
+            NO_CHECK(COMPILE_POPPED(ret, "masgn val (popped)", rhsn->nd_head));
 	}
 	else {
-	    COMPILE(ret, "masgn val", rhsn->nd_head);
+            NO_CHECK(COMPILE(ret, "masgn val", rhsn->nd_head));
 	}
 	rhsn = rhsn->nd_next;
 	rlen++;
@@ -2450,58 +4704,96 @@ compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *ret,
     return 1;
 }
 
+static void
+adjust_stack(rb_iseq_t *iseq, LINK_ANCHOR *const ret, int line, int rlen, int llen)
+{
+    if (rlen < llen) {
+	do {ADD_INSN(ret, line, putnil);} while (++rlen < llen);
+    }
+    else if (rlen > llen) {
+	do {ADD_INSN(ret, line, pop);} while (--rlen > llen);
+    }
+}
+
 static int
-compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int poped)
+compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
-    NODE *rhsn = node->nd_value;
-    NODE *splatn = node->nd_args;
-    NODE *lhsn = node->nd_head;
-    int lhs_splat = (splatn && (VALUE)splatn != (VALUE)-1) ? 1 : 0;
+    const NODE *rhsn = node->nd_value;
+    const NODE *splatn = node->nd_args;
+    const NODE *lhsn = node->nd_head;
+    int lhs_splat = (splatn && NODE_NAMED_REST_P(splatn)) ? 1 : 0;
 
-    if (!poped || splatn || !compile_massign_opt(iseq, ret, rhsn, lhsn)) {
+    if (!popped || splatn || !compile_massign_opt(iseq, ret, rhsn, lhsn)) {
 	int llen = 0;
+	int expand = 1;
 	DECL_ANCHOR(lhsseq);
 
 	INIT_ANCHOR(lhsseq);
 
 	while (lhsn) {
-	    compile_massign_lhs(iseq, lhsseq, lhsn->nd_head);
+	    CHECK(compile_massign_lhs(iseq, lhsseq, lhsn->nd_head));
 	    llen += 1;
 	    lhsn = lhsn->nd_next;
 	}
 
-	COMPILE(ret, "normal masgn rhs", rhsn);
+        NO_CHECK(COMPILE(ret, "normal masgn rhs", rhsn));
 
-	if (!poped) {
+	if (!popped) {
 	    ADD_INSN(ret, nd_line(node), dup);
 	}
-
-	ADD_INSN2(ret, nd_line(node), expandarray,
-		  INT2FIX(llen), INT2FIX(lhs_splat));
+	else if (!lhs_splat) {
+	    INSN *last = (INSN*)ret->last;
+	    if (IS_INSN(&last->link) &&
+		IS_INSN_ID(last, newarray) &&
+		last->operand_size == 1) {
+		int rlen = FIX2INT(OPERAND_AT(last, 0));
+		/* special case: assign to aset or attrset */
+		if (llen == 2) {
+		    POP_ELEMENT(ret);
+		    adjust_stack(iseq, ret, nd_line(node), rlen, llen);
+		    ADD_INSN(ret, nd_line(node), swap);
+		    expand = 0;
+		}
+		else if (llen > 2 && llen != rlen) {
+		    POP_ELEMENT(ret);
+		    adjust_stack(iseq, ret, nd_line(node), rlen, llen);
+		    ADD_INSN1(ret, nd_line(node), reverse, INT2FIX(llen));
+		    expand = 0;
+		}
+		else if (llen > 2) {
+		    last->insn_id = BIN(reverse);
+		    expand = 0;
+		}
+	    }
+	}
+	if (expand) {
+	    ADD_INSN2(ret, nd_line(node), expandarray,
+		      INT2FIX(llen), INT2FIX(lhs_splat));
+	}
 	ADD_SEQ(ret, lhsseq);
 
 	if (lhs_splat) {
 	    if (nd_type(splatn) == NODE_POSTARG) {
 		/*a, b, *r, p1, p2 */
-		NODE *postn = splatn->nd_2nd;
-		NODE *restn = splatn->nd_1st;
-		int num = postn->nd_alen;
-		int flag = 0x02 | (((VALUE)restn == (VALUE)-1) ? 0x00 : 0x01);
+		const NODE *postn = splatn->nd_2nd;
+		const NODE *restn = splatn->nd_1st;
+		int num = (int)postn->nd_alen;
+		int flag = 0x02 | (NODE_NAMED_REST_P(restn) ? 0x01 : 0x00);
 
 		ADD_INSN2(ret, nd_line(splatn), expandarray,
 			  INT2FIX(num), INT2FIX(flag));
 
-		if ((VALUE)restn != (VALUE)-1) {
-		    compile_massign_lhs(iseq, ret, restn);
+		if (NODE_NAMED_REST_P(restn)) {
+		    CHECK(compile_massign_lhs(iseq, ret, restn));
 		}
 		while (postn) {
-		    compile_massign_lhs(iseq, ret, postn->nd_head);
+		    CHECK(compile_massign_lhs(iseq, ret, postn->nd_head));
 		    postn = postn->nd_next;
 		}
 	    }
 	    else {
 		/* a, b, *r */
-		compile_massign_lhs(iseq, ret, splatn);
+		CHECK(compile_massign_lhs(iseq, ret, splatn));
 	    }
 	}
     }
@@ -2509,219 +4801,216 @@ compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int poped)
 }
 
 static int
-compile_colon2(rb_iseq_t *iseq, NODE * node,
-	       LINK_ANCHOR *pref, LINK_ANCHOR *body)
+compile_const_prefix(rb_iseq_t *iseq, const NODE *const node,
+		     LINK_ANCHOR *const pref, LINK_ANCHOR *const body)
 {
     switch (nd_type(node)) {
       case NODE_CONST:
-	debugi("compile_colon2 - colon", node->nd_vid);
-	ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_vid));
+	debugi("compile_const_prefix - colon", node->nd_vid);
+        ADD_INSN1(body, nd_line(node), putobject, Qtrue);
+        ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_vid));
 	break;
       case NODE_COLON3:
-	debugi("compile_colon2 - colon3", node->nd_mid);
+	debugi("compile_const_prefix - colon3", node->nd_mid);
 	ADD_INSN(body, nd_line(node), pop);
 	ADD_INSN1(body, nd_line(node), putobject, rb_cObject);
-	ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
+        ADD_INSN1(body, nd_line(node), putobject, Qtrue);
+        ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
 	break;
       case NODE_COLON2:
-	compile_colon2(iseq, node->nd_head, pref, body);
-	debugi("compile_colon2 - colon2", node->nd_mid);
-	ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
+	CHECK(compile_const_prefix(iseq, node->nd_head, pref, body));
+	debugi("compile_const_prefix - colon2", node->nd_mid);
+        ADD_INSN1(body, nd_line(node), putobject, Qfalse);
+        ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
 	break;
       default:
-	COMPILE(pref, "const colon2 prefix", node);
+	CHECK(COMPILE(pref, "const colon2 prefix", node));
 	break;
     }
     return COMPILE_OK;
 }
 
-static VALUE
-compile_cpath(LINK_ANCHOR *ret, rb_iseq_t *iseq, NODE *cpath)
+static int
+compile_cpath(LINK_ANCHOR *const ret, rb_iseq_t *iseq, const NODE *cpath)
 {
     if (nd_type(cpath) == NODE_COLON3) {
 	/* toplevel class ::Foo */
 	ADD_INSN1(ret, nd_line(cpath), putobject, rb_cObject);
-	return Qfalse;
+	return VM_DEFINECLASS_FLAG_SCOPED;
     }
     else if (cpath->nd_head) {
 	/* Bar::Foo */
-	COMPILE(ret, "nd_else->nd_head", cpath->nd_head);
-	return Qfalse;
+        NO_CHECK(COMPILE(ret, "nd_else->nd_head", cpath->nd_head));
+	return VM_DEFINECLASS_FLAG_SCOPED;
     }
     else {
 	/* class at cbase Foo */
-	ADD_INSN1(ret, nd_line(cpath), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
-	return Qtrue;
+	ADD_INSN1(ret, nd_line(cpath), putspecialobject,
+		  INT2FIX(VM_SPECIAL_OBJECT_CONST_BASE));
+	return 0;
     }
 }
 
-static int
-defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *ret,
-	     NODE *node, LABEL **lfinish, VALUE needstr)
+static inline int
+private_recv_p(const NODE *node)
 {
-    const char *estr = 0;
+    if (nd_type(node->nd_recv) == NODE_SELF) {
+        NODE *self = node->nd_recv;
+        return self->nd_state != 0;
+    }
+    return 0;
+}
+
+static void
+defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
+	     const NODE *const node, LABEL **lfinish, VALUE needstr);
+
+static void
+defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
+	      const NODE *const node, LABEL **lfinish, VALUE needstr)
+{
+    enum defined_type expr_type = DEFINED_NOT_DEFINED;
     enum node_type type;
+    const int line = nd_line(node);
 
     switch (type = nd_type(node)) {
 
 	/* easy literals */
       case NODE_NIL:
-	estr = "nil";
+	expr_type = DEFINED_NIL;
 	break;
       case NODE_SELF:
-	estr = "self";
+	expr_type = DEFINED_SELF;
 	break;
       case NODE_TRUE:
-	estr = "true";
+	expr_type = DEFINED_TRUE;
 	break;
       case NODE_FALSE:
-	estr = "false";
+	expr_type = DEFINED_FALSE;
 	break;
 
-      case NODE_ARRAY:{
-	NODE *vals = node;
+      case NODE_LIST:{
+	const NODE *vals = node;
 
 	do {
-	    defined_expr(iseq, ret, vals->nd_head, lfinish, Qfalse);
+	    defined_expr0(iseq, ret, vals->nd_head, lfinish, Qfalse);
 
 	    if (!lfinish[1]) {
-		lfinish[1] = NEW_LABEL(nd_line(node));
+                lfinish[1] = NEW_LABEL(line);
 	    }
-	    ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
+            ADD_INSNL(ret, line, branchunless, lfinish[1]);
 	} while ((vals = vals->nd_next) != NULL);
       }
+        /* fall through */
       case NODE_STR:
       case NODE_LIT:
-      case NODE_ZARRAY:
+      case NODE_ZLIST:
       case NODE_AND:
       case NODE_OR:
       default:
-	estr = "expression";
+	expr_type = DEFINED_EXPR;
 	break;
 
 	/* variables */
       case NODE_LVAR:
       case NODE_DVAR:
-	estr = "local-variable";
+	expr_type = DEFINED_LVAR;
 	break;
 
       case NODE_IVAR:
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_IVAR),
+        ADD_INSN(ret, line, putnil);
+        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_IVAR),
 		  ID2SYM(node->nd_vid), needstr);
-	return 1;
+        return;
 
       case NODE_GVAR:
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_GVAR),
-		  ((VALUE)node->nd_entry) | 1, needstr);
-	return 1;
+        ADD_INSN(ret, line, putnil);
+        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_GVAR),
+		  ID2SYM(node->nd_entry), needstr);
+        return;
 
       case NODE_CVAR:
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_CVAR),
+        ADD_INSN(ret, line, putnil);
+        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_CVAR),
 		  ID2SYM(node->nd_vid), needstr);
-	return 1;
+        return;
 
       case NODE_CONST:
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_CONST),
+        ADD_INSN(ret, line, putnil);
+        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_CONST),
 		  ID2SYM(node->nd_vid), needstr);
-	return 1;
+        return;
       case NODE_COLON2:
 	if (!lfinish[1]) {
-	    lfinish[1] = NEW_LABEL(nd_line(node));
+            lfinish[1] = NEW_LABEL(line);
 	}
-	defined_expr(iseq, ret, node->nd_head, lfinish, Qfalse);
-	ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
+	defined_expr0(iseq, ret, node->nd_head, lfinish, Qfalse);
+        ADD_INSNL(ret, line, branchunless, lfinish[1]);
+        NO_CHECK(COMPILE(ret, "defined/colon2#nd_head", node->nd_head));
 
-	if (rb_is_const_id(node->nd_mid)) {
-	    COMPILE(ret, "defined/colon2#nd_head", node->nd_head);
-	    ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_CONST),
-		      ID2SYM(node->nd_mid), needstr);
-	}
-	else {
-	    COMPILE(ret, "defined/colon2#nd_head", node->nd_head);
-	    ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_METHOD),
-		      ID2SYM(node->nd_mid), needstr);
-	}
-	return 1;
+        ADD_INSN3(ret, line, defined,
+		  (rb_is_const_id(node->nd_mid) ?
+		   INT2FIX(DEFINED_CONST_FROM) : INT2FIX(DEFINED_METHOD)),
+		  ID2SYM(node->nd_mid), needstr);
+        return;
       case NODE_COLON3:
-	ADD_INSN1(ret, nd_line(node), putobject, rb_cObject);
-	ADD_INSN3(ret, nd_line(node), defined,
-		  INT2FIX(DEFINED_CONST), ID2SYM(node->nd_mid), needstr);
-	return 1;
+        ADD_INSN1(ret, line, putobject, rb_cObject);
+        ADD_INSN3(ret, line, defined,
+		  INT2FIX(DEFINED_CONST_FROM), ID2SYM(node->nd_mid), needstr);
+        return;
 
 	/* method dispatch */
       case NODE_CALL:
+      case NODE_OPCALL:
       case NODE_VCALL:
       case NODE_FCALL:
       case NODE_ATTRASGN:{
-	int self = Qtrue;
+	const int explicit_receiver =
+	    (type == NODE_CALL || type == NODE_OPCALL ||
+	     (type == NODE_ATTRASGN && !private_recv_p(node)));
 
-	switch (type) {
-	  case NODE_ATTRASGN:
-	    if (node->nd_recv == (NODE *)1) break;
-	  case NODE_CALL:
-	    self = Qfalse;
-	    break;
-	  default:
-	    /* through */;
-	}
-	if (!lfinish[1]) {
-	    lfinish[1] = NEW_LABEL(nd_line(node));
+	if (!lfinish[1] && (node->nd_args || explicit_receiver)) {
+            lfinish[1] = NEW_LABEL(line);
 	}
 	if (node->nd_args) {
-	    defined_expr(iseq, ret, node->nd_args, lfinish, Qfalse);
-	    ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
-	}
-	if (!self) {
-	    LABEL *lstart = NEW_LABEL(nd_line(node));
-	    LABEL *lend = NEW_LABEL(nd_line(node));
-	    VALUE rescue = NEW_CHILD_ISEQVAL(NEW_NIL(),
-					     rb_str_concat(rb_str_new2
-							   ("defined guard in "),
-							   iseq->name),
-					     ISEQ_TYPE_DEFINED_GUARD);
-
-	    defined_expr(iseq, ret, node->nd_recv, lfinish, Qfalse);
-	    ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
-
-	    ADD_LABEL(ret, lstart);
-	    COMPILE(ret, "defined/recv", node->nd_recv);
-	    ADD_LABEL(ret, lend);
-	    ADD_CATCH_ENTRY(CATCH_TYPE_RESCUE, lstart, lend, rescue, lfinish[1]);
-	    ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_METHOD),
+	    defined_expr0(iseq, ret, node->nd_args, lfinish, Qfalse);
+            ADD_INSNL(ret, line, branchunless, lfinish[1]);
+	}
+	if (explicit_receiver) {
+	    defined_expr0(iseq, ret, node->nd_recv, lfinish, Qfalse);
+            ADD_INSNL(ret, line, branchunless, lfinish[1]);
+            NO_CHECK(COMPILE(ret, "defined/recv", node->nd_recv));
+            ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_METHOD),
 		      ID2SYM(node->nd_mid), needstr);
 	}
 	else {
-	    ADD_INSN(ret, nd_line(node), putself);
-	    ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_FUNC),
+            ADD_INSN(ret, line, putself);
+            ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_FUNC),
 		      ID2SYM(node->nd_mid), needstr);
 	}
-	return 1;
+        return;
       }
 
       case NODE_YIELD:
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_YIELD), 0,
+        ADD_INSN(ret, line, putnil);
+        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_YIELD), 0,
 		  needstr);
-	return 1;
+        return;
 
       case NODE_BACK_REF:
       case NODE_NTH_REF:
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_REF),
+        ADD_INSN(ret, line, putnil);
+        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_REF),
 		  INT2FIX((node->nd_nth << 1) | (type == NODE_BACK_REF)),
 		  needstr);
-	return 1;
+        return;
 
       case NODE_SUPER:
       case NODE_ZSUPER:
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_ZSUPER), 0,
+        ADD_INSN(ret, line, putnil);
+        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_ZSUPER), 0,
 		  needstr);
-	return 1;
+        return;
 
       case NODE_OP_ASGN1:
       case NODE_OP_ASGN2:
@@ -2734,61 +5023,111 @@ defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *ret,
       case NODE_GASGN:
       case NODE_IASGN:
       case NODE_CDECL:
-      case NODE_CVDECL:
       case NODE_CVASGN:
-	estr = "assignment";
+	expr_type = DEFINED_ASGN;
 	break;
     }
 
-    if (estr != 0) {
-	if (needstr != Qfalse) {
-	    VALUE str = rb_str_new2(estr);
-	    hide_obj(str);
-	    ADD_INSN1(ret, nd_line(node), putstring, str);
-	    iseq_add_mark_object_compile_time(iseq, str);
-	}
-	else {
-	    ADD_INSN1(ret, nd_line(node), putobject, Qtrue);
-	}
-	return 1;
+    assert(expr_type != DEFINED_NOT_DEFINED);
+
+    if (needstr != Qfalse) {
+        VALUE str = rb_iseq_defined_string(expr_type);
+        ADD_INSN1(ret, line, putobject, str);
+    }
+    else {
+        ADD_INSN1(ret, line, putobject, Qtrue);
+    }
+}
+
+static void
+build_defined_rescue_iseq(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const void *unused)
+{
+    ADD_INSN(ret, 0, putnil);
+    iseq_set_exception_local_table(iseq);
+}
+
+static void
+defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
+	     const NODE *const node, LABEL **lfinish, VALUE needstr)
+{
+    LINK_ELEMENT *lcur = ret->last;
+    defined_expr0(iseq, ret, node, lfinish, needstr);
+    if (lfinish[1]) {
+	int line = nd_line(node);
+	LABEL *lstart = NEW_LABEL(line);
+	LABEL *lend = NEW_LABEL(line);
+	const rb_iseq_t *rescue;
+        struct rb_iseq_new_with_callback_callback_func *ifunc =
+            rb_iseq_new_with_callback_new_callback(build_defined_rescue_iseq, NULL);
+        rescue = new_child_iseq_with_callback(iseq, ifunc,
+				      rb_str_concat(rb_str_new2("defined guard in "),
+						    iseq->body->location.label),
+				      iseq, ISEQ_TYPE_RESCUE, 0);
+	lstart->rescued = LABEL_RESCUE_BEG;
+	lend->rescued = LABEL_RESCUE_END;
+	APPEND_LABEL(ret, lcur, lstart);
+	ADD_LABEL(ret, lend);
+	ADD_CATCH_ENTRY(CATCH_TYPE_RESCUE, lstart, lend, rescue, lfinish[1]);
     }
-    return 0;
 }
 
-#define BUFSIZE 0x100
+static int
+compile_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, VALUE needstr)
+{
+    const int line = nd_line(node);
+    if (!node->nd_head) {
+	VALUE str = rb_iseq_defined_string(DEFINED_NIL);
+	ADD_INSN1(ret, line, putobject, str);
+    }
+    else {
+	LABEL *lfinish[2];
+	LINK_ELEMENT *last = ret->last;
+	lfinish[0] = NEW_LABEL(line);
+	lfinish[1] = 0;
+	defined_expr(iseq, ret, node->nd_head, lfinish, needstr);
+	if (lfinish[1]) {
+	    ELEM_INSERT_NEXT(last, &new_insn_body(iseq, line, BIN(putnil), 0)->link);
+	    ADD_INSN(ret, line, swap);
+	    ADD_INSN(ret, line, pop);
+	    ADD_LABEL(ret, lfinish[1]);
+	}
+	ADD_LABEL(ret, lfinish[0]);
+    }
+    return COMPILE_OK;
+}
 
 static VALUE
-make_name_for_block(rb_iseq_t *iseq)
+make_name_for_block(const rb_iseq_t *orig_iseq)
 {
     int level = 1;
-    rb_iseq_t *ip = iseq;
+    const rb_iseq_t *iseq = orig_iseq;
 
-    if (iseq->parent_iseq != 0) {
-	while (ip->local_iseq != ip) {
-	    if (ip->type == ISEQ_TYPE_BLOCK) {
+    if (orig_iseq->body->parent_iseq != 0) {
+	while (orig_iseq->body->local_iseq != iseq) {
+	    if (iseq->body->type == ISEQ_TYPE_BLOCK) {
 		level++;
 	    }
-	    ip = ip->parent_iseq;
+	    iseq = iseq->body->parent_iseq;
 	}
     }
 
     if (level == 1) {
-	return rb_sprintf("block in %s", RSTRING_PTR(ip->name));
+	return rb_sprintf("block in %"PRIsVALUE, iseq->body->location.label);
     }
     else {
-	return rb_sprintf("block (%d levels) in %s", level, RSTRING_PTR(ip->name));
+	return rb_sprintf("block (%d levels) in %"PRIsVALUE, level, iseq->body->location.label);
     }
 }
 
 static void
 push_ensure_entry(rb_iseq_t *iseq,
 		  struct iseq_compile_data_ensure_node_stack *enl,
-		  struct ensure_range *er, NODE *node)
+		  struct ensure_range *er, const NODE *const node)
 {
     enl->ensure_node = node;
-    enl->prev = iseq->compile_data->ensure_node_stack;	/* prev */
+    enl->prev = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack;	/* prev */
     enl->erange = er;
-    iseq->compile_data->ensure_node_stack = enl;
+    ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enl;
 }
 
 static void
@@ -2810,16 +5149,16 @@ add_ensure_range(rb_iseq_t *iseq, struct ensure_range *erange,
 }
 
 static void
-add_ensure_iseq(LINK_ANCHOR *ret, rb_iseq_t *iseq, int is_return)
+add_ensure_iseq(LINK_ANCHOR *const ret, rb_iseq_t *iseq, int is_return)
 {
     struct iseq_compile_data_ensure_node_stack *enlp =
-	iseq->compile_data->ensure_node_stack;
+	ISEQ_COMPILE_DATA(iseq)->ensure_node_stack;
     struct iseq_compile_data_ensure_node_stack *prev_enlp = enlp;
     DECL_ANCHOR(ensure);
 
     INIT_ANCHOR(ensure);
     while (enlp) {
-	if (enlp->erange != 0) {
+	if (enlp->erange != NULL) {
 	    DECL_ANCHOR(ensure_part);
 	    LABEL *lstart = NEW_LABEL(0);
 	    LABEL *lend = NEW_LABEL(0);
@@ -2827,9 +5166,9 @@ add_ensure_iseq(LINK_ANCHOR *ret, rb_iseq_t *iseq, int is_return)
 
 	    add_ensure_range(iseq, enlp->erange, lstart, lend);
 
-	    iseq->compile_data->ensure_node_stack = enlp->prev;
+	    ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enlp->prev;
 	    ADD_LABEL(ensure_part, lstart);
-	    COMPILE_POPED(ensure_part, "ensure part", enlp->ensure_node);
+            NO_CHECK(COMPILE_POPPED(ensure_part, "ensure part", enlp->ensure_node));
 	    ADD_LABEL(ensure_part, lend);
 	    ADD_SEQ(ensure, ensure_part);
 	}
@@ -2840,911 +5179,2575 @@ add_ensure_iseq(LINK_ANCHOR *ret, rb_iseq_t *iseq, int is_return)
 	}
 	enlp = enlp->prev;
     }
-    iseq->compile_data->ensure_node_stack = prev_enlp;
+    ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = prev_enlp;
     ADD_SEQ(ret, ensure);
 }
 
+static int
+check_keyword(const NODE *node)
+{
+    /* This check is essentially a code clone of compile_keyword_arg. */
+
+    if (nd_type(node) == NODE_LIST) {
+        while (node->nd_next) {
+            node = node->nd_next;
+        }
+        node = node->nd_head;
+    }
+
+    return keyword_node_p(node);
+}
+
 static VALUE
-setup_args(rb_iseq_t *iseq, LINK_ANCHOR *args, NODE *argn, unsigned long *flag)
+setup_args_core(rb_iseq_t *iseq, LINK_ANCHOR *const args, const NODE *argn,
+                int dup_rest, unsigned int *flag, struct rb_callinfo_kwarg **keywords)
 {
-    VALUE argc = INT2FIX(0);
-    int nsplat = 0;
-    DECL_ANCHOR(arg_block);
-    DECL_ANCHOR(args_splat);
+    if (argn) {
+        switch (nd_type(argn)) {
+          case NODE_SPLAT: {
+            NO_CHECK(COMPILE(args, "args (splat)", argn->nd_head));
+            ADD_INSN1(args, nd_line(argn), splatarray, dup_rest ? Qtrue : Qfalse);
+            if (flag) *flag |= VM_CALL_ARGS_SPLAT;
+            return INT2FIX(1);
+          }
+          case NODE_ARGSCAT:
+          case NODE_ARGSPUSH: {
+            int next_is_list = (nd_type(argn->nd_head) == NODE_LIST);
+            VALUE argc = setup_args_core(iseq, args, argn->nd_head, 1, NULL, NULL);
+            if (nd_type(argn->nd_body) == NODE_LIST) {
+                /* This branch is needed to avoid "newarraykwsplat" [Bug #16442] */
+                int rest_len = compile_args(iseq, args, argn->nd_body, NULL, NULL);
+                ADD_INSN1(args, nd_line(argn), newarray, INT2FIX(rest_len));
+            }
+            else {
+                NO_CHECK(COMPILE(args, "args (cat: splat)", argn->nd_body));
+            }
+            if (flag) {
+                *flag |= VM_CALL_ARGS_SPLAT;
+                /* This is a dirty hack.  It traverses the AST twice.
+                 * In a long term, it should be fixed by a redesign of keyword arguments */
+                if (check_keyword(argn->nd_body))
+                    *flag |= VM_CALL_KW_SPLAT;
+            }
+            if (nd_type(argn) == NODE_ARGSCAT) {
+                if (next_is_list) {
+                    ADD_INSN1(args, nd_line(argn), splatarray, Qtrue);
+                    return INT2FIX(FIX2INT(argc) + 1);
+                }
+                else {
+                    ADD_INSN1(args, nd_line(argn), splatarray, Qfalse);
+                    ADD_INSN(args, nd_line(argn), concatarray);
+                    return argc;
+                }
+            }
+            else {
+                ADD_INSN1(args, nd_line(argn), newarray, INT2FIX(1));
+                ADD_INSN(args, nd_line(argn), concatarray);
+                return argc;
+            }
+          }
+          case NODE_LIST: {
+            int len = compile_args(iseq, args, argn, keywords, flag);
+            return INT2FIX(len);
+          }
+          default: {
+            UNKNOWN_NODE("setup_arg", argn, Qnil);
+          }
+        }
+    }
+    return INT2FIX(0);
+}
 
-    INIT_ANCHOR(arg_block);
-    INIT_ANCHOR(args_splat);
+static VALUE
+setup_args(rb_iseq_t *iseq, LINK_ANCHOR *const args, const NODE *argn,
+	   unsigned int *flag, struct rb_callinfo_kwarg **keywords)
+{
+    VALUE ret;
     if (argn && nd_type(argn) == NODE_BLOCK_PASS) {
-	COMPILE(arg_block, "block", argn->nd_body);
-	*flag |= VM_CALL_ARGS_BLOCKARG_BIT;
-	argn = argn->nd_head;
+        unsigned int dup_rest = 1;
+        DECL_ANCHOR(arg_block);
+        INIT_ANCHOR(arg_block);
+        NO_CHECK(COMPILE(arg_block, "block", argn->nd_body));
+
+        *flag |= VM_CALL_ARGS_BLOCKARG;
+
+        if (LIST_INSN_SIZE_ONE(arg_block)) {
+            LINK_ELEMENT *elem = FIRST_ELEMENT(arg_block);
+            if (elem->type == ISEQ_ELEMENT_INSN) {
+                INSN *iobj = (INSN *)elem;
+                if (iobj->insn_id == BIN(getblockparam)) {
+                    iobj->insn_id = BIN(getblockparamproxy);
+                }
+                dup_rest = 0;
+            }
+        }
+        ret = setup_args_core(iseq, args, argn->nd_head, dup_rest, flag, keywords);
+        ADD_SEQ(args, arg_block);
+    }
+    else {
+        ret = setup_args_core(iseq, args, argn, 0, flag, keywords);
     }
+    return ret;
+}
 
-  setup_argn:
-    if (argn) {
-	switch (nd_type(argn)) {
-	  case NODE_SPLAT: {
-	    COMPILE(args, "args (splat)", argn->nd_head);
-	    argc = INT2FIX(1);
-	    nsplat++;
-	    *flag |= VM_CALL_ARGS_SPLAT_BIT;
-	    break;
-	  }
-	  case NODE_ARGSCAT:
-	  case NODE_ARGSPUSH: {
-	    int next_is_array = (nd_type(argn->nd_head) == NODE_ARRAY);
-	    DECL_ANCHOR(tmp);
+static void
+build_postexe_iseq(rb_iseq_t *iseq, LINK_ANCHOR *ret, const void *ptr)
+{
+    const NODE *body = ptr;
+    int line = nd_line(body);
+    VALUE argc = INT2FIX(0);
+    const rb_iseq_t *block = NEW_CHILD_ISEQ(body, make_name_for_block(iseq->body->parent_iseq), ISEQ_TYPE_BLOCK, line);
 
-	    INIT_ANCHOR(tmp);
-	    COMPILE(tmp, "args (cat: splat)", argn->nd_body);
-	    if (next_is_array && nsplat == 0) {
-		/* none */
-	    }
-	    else {
-		if (nd_type(argn) == NODE_ARGSCAT) {
-		    ADD_INSN1(tmp, nd_line(argn), splatarray, Qfalse);
-		}
-		else {
-		    ADD_INSN1(tmp, nd_line(argn), newarray, INT2FIX(1));
-		}
-	    }
-	    INSERT_LIST(args_splat, tmp);
-	    nsplat++;
-	    *flag |= VM_CALL_ARGS_SPLAT_BIT;
+    ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+    ADD_CALL_WITH_BLOCK(ret, line, id_core_set_postexe, argc, block);
+    RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)block);
+    iseq_set_local_table(iseq, 0);
+}
 
-	    if (next_is_array) {
-		argc = INT2FIX(compile_array(iseq, args, argn->nd_head, Qfalse) + 1);
-		POP_ELEMENT(args);
-	    }
-	    else {
-		argn = argn->nd_head;
-		goto setup_argn;
-	    }
-	    break;
-	  }
-	  case NODE_ARRAY: {
-	    argc = INT2FIX(compile_array(iseq, args, argn, Qfalse));
-	    POP_ELEMENT(args);
-	    break;
-	  }
-	  default: {
-	    rb_bug("setup_arg: unknown node: %s\n", ruby_node_name(nd_type(argn)));
-	  }
-	}
-    }
+static void
+compile_named_capture_assign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
+{
+    const NODE *vars;
+    LINK_ELEMENT *last;
+    int line = nd_line(node);
+    LABEL *fail_label = NEW_LABEL(line), *end_label = NEW_LABEL(line);
 
-    if (nsplat > 1) {
-	int i;
-	for (i=1; i<nsplat; i++) {
-	    ADD_INSN(args_splat, nd_line(args), concatarray);
+#if !(defined(NAMED_CAPTURE_BY_SVAR) && NAMED_CAPTURE_BY_SVAR-0)
+    ADD_INSN1(ret, line, getglobal, ID2SYM(idBACKREF));
+#else
+    ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~' */, INT2FIX(0));
+#endif
+    ADD_INSN(ret, line, dup);
+    ADD_INSNL(ret, line, branchunless, fail_label);
+
+    for (vars = node; vars; vars = vars->nd_next) {
+	INSN *cap;
+	if (vars->nd_next) {
+	    ADD_INSN(ret, line, dup);
+	}
+	last = ret->last;
+        NO_CHECK(COMPILE_POPPED(ret, "capture", vars->nd_head));
+	last = last->next; /* putobject :var */
+	cap = new_insn_send(iseq, line, idAREF, INT2FIX(1),
+			    NULL, INT2FIX(0), NULL);
+	ELEM_INSERT_PREV(last->next, (LINK_ELEMENT *)cap);
+#if !defined(NAMED_CAPTURE_SINGLE_OPT) || NAMED_CAPTURE_SINGLE_OPT-0
+	if (!vars->nd_next && vars == node) {
+	    /* only one name */
+	    DECL_ANCHOR(nom);
+
+	    INIT_ANCHOR(nom);
+	    ADD_INSNL(nom, line, jump, end_label);
+	    ADD_LABEL(nom, fail_label);
+# if 0				/* $~ must be MatchData or nil */
+	    ADD_INSN(nom, line, pop);
+	    ADD_INSN(nom, line, putnil);
+# endif
+	    ADD_LABEL(nom, end_label);
+	    (nom->last->next = cap->link.next)->prev = nom->last;
+	    (cap->link.next = nom->anchor.next)->prev = &cap->link;
+	    return;
 	}
+#endif
     }
-
-    if (!LIST_SIZE_ZERO(args_splat)) {
-	ADD_SEQ(args, args_splat);
+    ADD_INSNL(ret, line, jump, end_label);
+    ADD_LABEL(ret, fail_label);
+    ADD_INSN(ret, line, pop);
+    for (vars = node; vars; vars = vars->nd_next) {
+	last = ret->last;
+        NO_CHECK(COMPILE_POPPED(ret, "capture", vars->nd_head));
+	last = last->next; /* putobject :var */
+	((INSN*)last)->insn_id = BIN(putnil);
+	((INSN*)last)->operand_size = 0;
     }
+    ADD_LABEL(ret, end_label);
+}
 
-    if (*flag & VM_CALL_ARGS_BLOCKARG_BIT) {
-	ADD_SEQ(args, arg_block);
+static int
+optimizable_range_item_p(const NODE *n)
+{
+    if (!n) return FALSE;
+    switch (nd_type(n)) {
+      case NODE_LIT:
+        return RB_INTEGER_TYPE_P(n->nd_lit);
+      case NODE_NIL:
+        return TRUE;
+      default:
+        return FALSE;
     }
-    return argc;
 }
 
-
-/**
-  compile each node
-
-  self:  InstructionSequence
-  node:  Ruby compiled node
-  poped: This node will be poped
- */
 static int
-iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
+compile_if(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped, const enum node_type type)
 {
-    enum node_type type;
-
-    if (node == 0) {
-	if (!poped) {
-	    debugs("node: NODE_NIL(implicit)\n");
-	    ADD_INSN(ret, iseq->compile_data->last_line, putnil);
-	}
-	return COMPILE_OK;
+    struct rb_iseq_constant_body *const body = iseq->body;
+    const NODE *const node_body = type == NODE_IF ? node->nd_body : node->nd_else;
+    const NODE *const node_else = type == NODE_IF ? node->nd_else : node->nd_body;
+
+    const int line = nd_line(node);
+    DECL_ANCHOR(cond_seq);
+    DECL_ANCHOR(then_seq);
+    DECL_ANCHOR(else_seq);
+    LABEL *then_label, *else_label, *end_label;
+    VALUE branches = Qfalse;
+    int ci_size;
+    VALUE catch_table = ISEQ_COMPILE_DATA(iseq)->catch_table_ary;
+    long catch_table_size = NIL_P(catch_table) ? 0 : RARRAY_LEN(catch_table);
+
+    INIT_ANCHOR(cond_seq);
+    INIT_ANCHOR(then_seq);
+    INIT_ANCHOR(else_seq);
+    then_label = NEW_LABEL(line);
+    else_label = NEW_LABEL(line);
+    end_label = 0;
+
+    compile_branch_condition(iseq, cond_seq, node->nd_cond,
+			     then_label, else_label);
+
+    ci_size = body->ci_size;
+    CHECK(COMPILE_(then_seq, "then", node_body, popped));
+    catch_table = ISEQ_COMPILE_DATA(iseq)->catch_table_ary;
+    if (!then_label->refcnt) {
+        body->ci_size = ci_size;
+        if (!NIL_P(catch_table)) rb_ary_set_len(catch_table, catch_table_size);
+    }
+    else {
+        if (!NIL_P(catch_table)) catch_table_size = RARRAY_LEN(catch_table);
     }
 
-    iseq->compile_data->last_line = nd_line(node);
-    debug_node_start(node);
+    ci_size = body->ci_size;
+    CHECK(COMPILE_(else_seq, "else", node_else, popped));
+    catch_table = ISEQ_COMPILE_DATA(iseq)->catch_table_ary;
+    if (!else_label->refcnt) {
+        body->ci_size = ci_size;
+        if (!NIL_P(catch_table)) rb_ary_set_len(catch_table, catch_table_size);
+    }
+    else {
+        if (!NIL_P(catch_table)) catch_table_size = RARRAY_LEN(catch_table);
+    }
 
-    type = nd_type(node);
+    ADD_SEQ(ret, cond_seq);
 
-    if (node->flags & NODE_FL_NEWLINE) {
-	ADD_TRACE(ret, nd_line(node), RUBY_EVENT_LINE);
+    if (then_label->refcnt && else_label->refcnt) {
+	branches = decl_branch_base(iseq, node, type == NODE_IF ? "if" : "unless");
     }
 
-    switch (type) {
-      case NODE_BLOCK:{
-	while (node && nd_type(node) == NODE_BLOCK) {
-	    COMPILE_(ret, "BLOCK body", node->nd_head,
-		     (node->nd_next == 0 && poped == 0) ? 0 : 1);
-	    node = node->nd_next;
-	}
-	if (node) {
-	    COMPILE_(ret, "BLOCK next", node->nd_next, poped);
-	}
-	break;
-      }
-      case NODE_IF:{
-	DECL_ANCHOR(cond_seq);
-	DECL_ANCHOR(then_seq);
-	DECL_ANCHOR(else_seq);
-	LABEL *then_label, *else_label, *end_label;
-
-	INIT_ANCHOR(cond_seq);
-	INIT_ANCHOR(then_seq);
-	INIT_ANCHOR(else_seq);
-	then_label = NEW_LABEL(nd_line(node));
-	else_label = NEW_LABEL(nd_line(node));
-	end_label = NEW_LABEL(nd_line(node));
-
-	compile_branch_condition(iseq, cond_seq, node->nd_cond,
-				 then_label, else_label);
-	COMPILE_(then_seq, "then", node->nd_body, poped);
-	COMPILE_(else_seq, "else", node->nd_else, poped);
-
-	ADD_SEQ(ret, cond_seq);
-
+    if (then_label->refcnt) {
 	ADD_LABEL(ret, then_label);
+	if (else_label->refcnt) {
+	    add_trace_branch_coverage(
+                iseq,
+		ret,
+                node_body ? node_body : node,
+                0,
+		type == NODE_IF ? "then" : "else",
+		branches);
+	    end_label = NEW_LABEL(line);
+	    ADD_INSNL(then_seq, line, jump, end_label);
+            if (!popped) {
+                ADD_INSN(then_seq, line, pop);
+            }
+	}
 	ADD_SEQ(ret, then_seq);
-	ADD_INSNL(ret, nd_line(node), jump, end_label);
+    }
 
+    if (else_label->refcnt) {
 	ADD_LABEL(ret, else_label);
+	if (then_label->refcnt) {
+	    add_trace_branch_coverage(
+                iseq,
+		ret,
+                node_else ? node_else : node,
+                1,
+		type == NODE_IF ? "else" : "then",
+		branches);
+	}
 	ADD_SEQ(ret, else_seq);
+    }
 
+    if (end_label) {
 	ADD_LABEL(ret, end_label);
+    }
 
-	break;
-      }
-      case NODE_CASE:{
-	NODE *vals;
-	NODE *tempnode = node;
-	LABEL *endlabel, *elselabel;
-	DECL_ANCHOR(head);
-	DECL_ANCHOR(body_seq);
-	DECL_ANCHOR(cond_seq);
-	VALUE special_literals = rb_ary_new();
-
-	INIT_ANCHOR(head);
-	INIT_ANCHOR(body_seq);
-	INIT_ANCHOR(cond_seq);
-	if (node->nd_head == 0) {
-	    COMPILE_(ret, "when", node->nd_body, poped);
-	    break;
-	}
-	COMPILE(head, "case base", node->nd_head);
-
-	node = node->nd_body;
-	type = nd_type(node);
-
-	if (type != NODE_WHEN) {
-	    COMPILE_ERROR((ERROR_ARGS "NODE_CASE: unexpected node. must be NODE_WHEN, but %s", ruby_node_name(type)));
-	}
+    return COMPILE_OK;
+}
 
-	endlabel = NEW_LABEL(nd_line(node));
-	elselabel = NEW_LABEL(nd_line(node));
+static int
+compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_node, int popped)
+{
+    const NODE *vals;
+    const NODE *node = orig_node;
+    LABEL *endlabel, *elselabel;
+    DECL_ANCHOR(head);
+    DECL_ANCHOR(body_seq);
+    DECL_ANCHOR(cond_seq);
+    int only_special_literals = 1;
+    VALUE literals = rb_hash_new();
+    int line;
+    enum node_type type;
+    VALUE branches = Qfalse;
+    int branch_id = 0;
 
-	ADD_SEQ(ret, head);	/* case VAL */
+    INIT_ANCHOR(head);
+    INIT_ANCHOR(body_seq);
+    INIT_ANCHOR(cond_seq);
 
-	while (type == NODE_WHEN) {
-	    LABEL *l1;
+    RHASH_TBL_RAW(literals)->type = &cdhash_type;
 
-	    l1 = NEW_LABEL(nd_line(node));
-	    ADD_LABEL(body_seq, l1);
-	    ADD_INSN(body_seq, nd_line(node), pop);
-	    COMPILE_(body_seq, "when body", node->nd_body, poped);
-	    ADD_INSNL(body_seq, nd_line(node), jump, endlabel);
+    CHECK(COMPILE(head, "case base", node->nd_head));
 
-	    vals = node->nd_head;
-	    if (vals) {
-		switch (nd_type(vals)) {
-		  case NODE_ARRAY:
-		    special_literals = when_vals(iseq, cond_seq, vals, l1, special_literals);
-		    break;
-		  case NODE_SPLAT:
-		  case NODE_ARGSCAT:
-		  case NODE_ARGSPUSH:
-		    special_literals = 0;
-		    COMPILE(cond_seq, "when/cond splat", vals);
-		    ADD_INSN1(cond_seq, nd_line(vals), checkincludearray, Qtrue);
-		    ADD_INSNL(cond_seq, nd_line(vals), branchif, l1);
-		    break;
-		  default:
-		    rb_bug("NODE_CASE: unknown node (%s)",
-			   ruby_node_name(nd_type(vals)));
-		}
-	    }
-	    else {
-		rb_bug("NODE_CASE: must be NODE_ARRAY, but 0");
-	    }
+    branches = decl_branch_base(iseq, node, "case");
 
-	    node = node->nd_next;
-	    if (!node) {
+    node = node->nd_body;
+    EXPECT_NODE("NODE_CASE", node, NODE_WHEN, COMPILE_NG);
+    type = nd_type(node);
+    line = nd_line(node);
+
+    endlabel = NEW_LABEL(line);
+    elselabel = NEW_LABEL(line);
+
+    ADD_SEQ(ret, head);	/* case VAL */
+
+    while (type == NODE_WHEN) {
+	LABEL *l1;
+
+	l1 = NEW_LABEL(line);
+	ADD_LABEL(body_seq, l1);
+	ADD_INSN(body_seq, line, pop);
+	add_trace_branch_coverage(
+                iseq,
+		body_seq,
+                node->nd_body ? node->nd_body : node,
+                branch_id++,
+		"when",
+		branches);
+	CHECK(COMPILE_(body_seq, "when body", node->nd_body, popped));
+	ADD_INSNL(body_seq, line, jump, endlabel);
+
+	vals = node->nd_head;
+	if (vals) {
+	    switch (nd_type(vals)) {
+	      case NODE_LIST:
+		only_special_literals = when_vals(iseq, cond_seq, vals, l1, only_special_literals, literals);
+		if (only_special_literals < 0) return COMPILE_NG;
 		break;
+	      case NODE_SPLAT:
+	      case NODE_ARGSCAT:
+	      case NODE_ARGSPUSH:
+		only_special_literals = 0;
+		CHECK(when_splat_vals(iseq, cond_seq, vals, l1, only_special_literals, literals));
+		break;
+	      default:
+		UNKNOWN_NODE("NODE_CASE", vals, COMPILE_NG);
 	    }
-	    type = nd_type(node);
-	}
-	/* else */
-	if (node) {
-	    ADD_LABEL(cond_seq, elselabel);
-	    ADD_INSN(cond_seq, nd_line(node), pop);
-	    COMPILE_(cond_seq, "else", node, poped);
-	    ADD_INSNL(cond_seq, nd_line(node), jump, endlabel);
 	}
 	else {
-	    debugs("== else (implicit)\n");
-	    ADD_LABEL(cond_seq, elselabel);
-	    ADD_INSN(cond_seq, nd_line(tempnode), pop);
-	    if (!poped) {
-		ADD_INSN(cond_seq, nd_line(tempnode), putnil);
-	    }
-	    ADD_INSNL(cond_seq, nd_line(tempnode), jump, endlabel);
+	    EXPECT_NODE_NONULL("NODE_CASE", node, NODE_LIST, COMPILE_NG);
 	}
 
-	if (special_literals) {
-	    ADD_INSN(ret, nd_line(tempnode), dup);
-	    ADD_INSN2(ret, nd_line(tempnode), opt_case_dispatch,
-		      special_literals, elselabel);
-	    iseq_add_mark_object_compile_time(iseq, special_literals);
+	node = node->nd_next;
+	if (!node) {
+	    break;
 	}
+	type = nd_type(node);
+	line = nd_line(node);
+    }
+    /* else */
+    if (node) {
+	ADD_LABEL(cond_seq, elselabel);
+	ADD_INSN(cond_seq, line, pop);
+	add_trace_branch_coverage(iseq, cond_seq, node, branch_id, "else", branches);
+	CHECK(COMPILE_(cond_seq, "else", node, popped));
+	ADD_INSNL(cond_seq, line, jump, endlabel);
+    }
+    else {
+	debugs("== else (implicit)\n");
+	ADD_LABEL(cond_seq, elselabel);
+	ADD_INSN(cond_seq, nd_line(orig_node), pop);
+	add_trace_branch_coverage(iseq, cond_seq, orig_node, branch_id, "else", branches);
+	if (!popped) {
+	    ADD_INSN(cond_seq, nd_line(orig_node), putnil);
+	}
+	ADD_INSNL(cond_seq, nd_line(orig_node), jump, endlabel);
+    }
 
-	ADD_SEQ(ret, cond_seq);
-	ADD_SEQ(ret, body_seq);
-	ADD_LABEL(ret, endlabel);
-	break;
-      }
-      case NODE_WHEN:{
-	NODE *vals;
-	NODE *val;
-	NODE *orig_node = node;
-	LABEL *endlabel;
-	DECL_ANCHOR(body_seq);
-
-	INIT_ANCHOR(body_seq);
-	endlabel = NEW_LABEL(nd_line(node));
-
-	while (node && nd_type(node) == NODE_WHEN) {
-	    LABEL *l1 = NEW_LABEL(nd_line(node));
-	    ADD_LABEL(body_seq, l1);
-	    COMPILE_(body_seq, "when", node->nd_body, poped);
-	    ADD_INSNL(body_seq, nd_line(node), jump, endlabel);
-
-	    vals = node->nd_head;
-	    if (vals && nd_type(vals) == NODE_ARRAY) {
-		while (vals) {
-		    val = vals->nd_head;
-		    COMPILE(ret, "when2", val);
-		    ADD_INSNL(ret, nd_line(val), branchif, l1);
-		    vals = vals->nd_next;
-		}
-	    }
-	    else if (nd_type(vals) == NODE_SPLAT ||
-		     nd_type(vals) == NODE_ARGSCAT ||
-		     nd_type(vals) == NODE_ARGSPUSH) {
-
-		NODE *val = vals->nd_head;
-
-		if (nd_type(vals) == NODE_ARGSCAT || nd_type(vals) == NODE_ARGSPUSH) {
-		    NODE *vs = vals->nd_head;
-		    val = vals->nd_body;
+    if (only_special_literals && ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction) {
+	ADD_INSN(ret, nd_line(orig_node), dup);
+	ADD_INSN2(ret, nd_line(orig_node), opt_case_dispatch, literals, elselabel);
+        RB_OBJ_WRITTEN(iseq, Qundef, literals);
+	LABEL_REF(elselabel);
+    }
 
-		    while (vs) {
-			NODE* val = vs->nd_head;
-			COMPILE(ret, "when/argscat", val);
-			ADD_INSNL(ret, nd_line(val), branchif, l1);
-			vs = vs->nd_next;
-		    }
-		}
+    ADD_SEQ(ret, cond_seq);
+    ADD_SEQ(ret, body_seq);
+    ADD_LABEL(ret, endlabel);
+    return COMPILE_OK;
+}
 
-		ADD_INSN(ret, nd_line(val), putnil);
-		COMPILE(ret, "when2/splat", val);
-		ADD_INSN1(ret, nd_line(val), checkincludearray, Qfalse);
-		ADD_INSN(ret, nd_line(val), pop);
-		ADD_INSNL(ret, nd_line(val), branchif, l1);
-	    }
-	    else {
-		rb_bug("err");
+static int
+compile_case2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_node, int popped)
+{
+    const NODE *vals;
+    const NODE *val;
+    const NODE *node = orig_node->nd_body;
+    LABEL *endlabel;
+    DECL_ANCHOR(body_seq);
+    VALUE branches = Qfalse;
+    int branch_id = 0;
+
+    branches = decl_branch_base(iseq, orig_node, "case");
+
+    INIT_ANCHOR(body_seq);
+    endlabel = NEW_LABEL(nd_line(node));
+
+    while (node && nd_type(node) == NODE_WHEN) {
+	const int line = nd_line(node);
+	LABEL *l1 = NEW_LABEL(line);
+	ADD_LABEL(body_seq, l1);
+	add_trace_branch_coverage(
+                iseq,
+		body_seq,
+		node->nd_body ? node->nd_body : node,
+                branch_id++,
+		"when",
+		branches);
+	CHECK(COMPILE_(body_seq, "when", node->nd_body, popped));
+	ADD_INSNL(body_seq, line, jump, endlabel);
+
+	vals = node->nd_head;
+	if (!vals) {
+            EXPECT_NODE_NONULL("NODE_WHEN", node, NODE_LIST, COMPILE_NG);
+	}
+	switch (nd_type(vals)) {
+	  case NODE_LIST:
+	    while (vals) {
+		LABEL *lnext;
+		val = vals->nd_head;
+		lnext = NEW_LABEL(nd_line(val));
+		debug_compile("== when2\n", (void)0);
+		CHECK(compile_branch_condition(iseq, ret, val, l1, lnext));
+		ADD_LABEL(ret, lnext);
+		vals = vals->nd_next;
 	    }
-	    node = node->nd_next;
+	    break;
+	  case NODE_SPLAT:
+	  case NODE_ARGSCAT:
+	  case NODE_ARGSPUSH:
+	    ADD_INSN(ret, nd_line(vals), putnil);
+	    CHECK(COMPILE(ret, "when2/cond splat", vals));
+	    ADD_INSN1(ret, nd_line(vals), checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_WHEN | VM_CHECKMATCH_ARRAY));
+	    ADD_INSNL(ret, nd_line(vals), branchif, l1);
+	    break;
+	  default:
+	    UNKNOWN_NODE("NODE_WHEN", vals, COMPILE_NG);
 	}
-	/* else */
-	COMPILE_(ret, "else", node, poped);
-	ADD_INSNL(ret, nd_line(orig_node), jump, endlabel);
+	node = node->nd_next;
+    }
+    /* else */
+    add_trace_branch_coverage(
+        iseq,
+	ret,
+        node ? node : orig_node,
+        branch_id,
+	"else",
+	branches);
+    CHECK(COMPILE_(ret, "else", node, popped));
+    ADD_INSNL(ret, nd_line(orig_node), jump, endlabel);
+
+    ADD_SEQ(ret, body_seq);
+    ADD_LABEL(ret, endlabel);
+    return COMPILE_OK;
+}
 
-	ADD_SEQ(ret, body_seq);
-	ADD_LABEL(ret, endlabel);
+static int iseq_compile_pattern_match(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, LABEL *unmatched, int in_alt_pattern, int deconstructed_pos);
 
-	break;
+static int iseq_compile_array_deconstruct(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, LABEL *deconstruct, LABEL *deconstructed, LABEL *match_failed, LABEL *type_error, int deconstructed_pos);
+
+static int
+iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, LABEL *matched, LABEL *unmatched, int in_alt_pattern, int deconstructed_pos)
+{
+    const int line = nd_line(node);
+
+    switch (nd_type(node)) {
+      case NODE_ARYPTN: {
+        /*
+         *   if pattern.use_rest_num?
+         *     rest_num = 0
+         *   end
+         *   if pattern.has_constant_node?
+         *     unless pattern.constant === obj
+         *       goto match_failed
+         *     end
+         *   end
+         *   unless obj.respond_to?(:deconstruct)
+         *     goto match_failed
+         *   end
+         *   d = obj.deconstruct
+         *   unless Array === d
+         *     goto type_error
+         *   end
+         *   min_argc = pattern.pre_args_num + pattern.post_args_num
+         *   if pattern.has_rest_arg?
+         *     unless d.length >= min_argc
+         *       goto match_failed
+         *     end
+         *   else
+         *     unless d.length == min_argc
+         *       goto match_failed
+         *     end
+         *   end
+         *   pattern.pre_args_num.each do |i|
+         *     unless pattern.pre_args[i].match?(d[i])
+         *       goto match_failed
+         *     end
+         *   end
+         *   if pattern.use_rest_num?
+         *     rest_num = d.length - min_argc
+         *     if pattern.has_rest_arg? && pattern.has_rest_arg_id # not `*`, but `*rest`
+         *       unless pattern.rest_arg.match?(d[pattern.pre_args_num, rest_num])
+         *         goto match_failed
+         *       end
+         *     end
+         *   end
+         *   pattern.post_args_num.each do |i|
+         *     j = pattern.pre_args_num + i
+         *     j += rest_num
+         *     unless pattern.post_args[i].match?(d[j])
+         *       goto match_failed
+         *     end
+         *   end
+         *   goto matched
+         * type_error:
+         *   FrozenCore.raise TypeError
+         * match_failed:
+         *   goto unmatched
+         */
+        struct rb_ary_pattern_info *apinfo = node->nd_apinfo;
+        const NODE *args = apinfo->pre_args;
+        const int pre_args_num = apinfo->pre_args ? rb_long2int(apinfo->pre_args->nd_alen) : 0;
+        const int post_args_num = apinfo->post_args ? rb_long2int(apinfo->post_args->nd_alen) : 0;
+
+        const int min_argc = pre_args_num + post_args_num;
+        const int use_rest_num = apinfo->rest_arg && (NODE_NAMED_REST_P(apinfo->rest_arg) ||
+                                                      (!NODE_NAMED_REST_P(apinfo->rest_arg) && post_args_num > 0));
+
+        LABEL *match_failed, *type_error, *deconstruct, *deconstructed;
+        int i;
+        match_failed = NEW_LABEL(line);
+        type_error = NEW_LABEL(line);
+        deconstruct = NEW_LABEL(line);
+        deconstructed = NEW_LABEL(line);
+
+        if (use_rest_num) {
+            ADD_INSN1(ret, line, putobject, INT2FIX(0)); /* allocate stack for rest_num */
+            ADD_INSN(ret, line, swap);
+            if (deconstructed_pos) {
+                deconstructed_pos++;
+            }
+        }
+
+        if (node->nd_pconst) {
+            ADD_INSN(ret, line, dup);
+            CHECK(COMPILE(ret, "constant", node->nd_pconst));
+            ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
+            ADD_INSNL(ret, line, branchunless, match_failed);
+        }
+
+        CHECK(iseq_compile_array_deconstruct(iseq, ret, node, deconstruct, deconstructed, match_failed, type_error, deconstructed_pos));
+
+        ADD_INSN(ret, line, dup);
+        ADD_SEND(ret, line, idLength, INT2FIX(0));
+        ADD_INSN1(ret, line, putobject, INT2FIX(min_argc));
+        ADD_SEND(ret, line, apinfo->rest_arg ? idGE : idEq, INT2FIX(1));
+        ADD_INSNL(ret, line, branchunless, match_failed);
+
+        for (i = 0; i < pre_args_num; i++) {
+            ADD_INSN(ret, line, dup);
+            ADD_INSN1(ret, line, putobject, INT2FIX(i));
+            ADD_SEND(ret, line, idAREF, INT2FIX(1));
+            CHECK(iseq_compile_pattern_match(iseq, ret, args->nd_head, match_failed, in_alt_pattern, FALSE));
+            args = args->nd_next;
+        }
+
+        if (apinfo->rest_arg) {
+            if (NODE_NAMED_REST_P(apinfo->rest_arg)) {
+                ADD_INSN(ret, line, dup);
+                ADD_INSN1(ret, line, putobject, INT2FIX(pre_args_num));
+                ADD_INSN1(ret, line, topn, INT2FIX(1));
+                ADD_SEND(ret, line, idLength, INT2FIX(0));
+                ADD_INSN1(ret, line, putobject, INT2FIX(min_argc));
+                ADD_SEND(ret, line, idMINUS, INT2FIX(1));
+                ADD_INSN1(ret, line, setn, INT2FIX(4));
+                ADD_SEND(ret, line, idAREF, INT2FIX(2));
+
+                CHECK(iseq_compile_pattern_match(iseq, ret, apinfo->rest_arg, match_failed, in_alt_pattern, FALSE));
+            }
+            else {
+                if (post_args_num > 0) {
+                    ADD_INSN(ret, line, dup);
+                    ADD_SEND(ret, line, idLength, INT2FIX(0));
+                    ADD_INSN1(ret, line, putobject, INT2FIX(min_argc));
+                    ADD_SEND(ret, line, idMINUS, INT2FIX(1));
+                    ADD_INSN1(ret, line, setn, INT2FIX(2));
+                    ADD_INSN(ret, line, pop);
+                }
+            }
+        }
+
+        args = apinfo->post_args;
+        for (i = 0; i < post_args_num; i++) {
+            ADD_INSN(ret, line, dup);
+
+            ADD_INSN1(ret, line, putobject, INT2FIX(pre_args_num + i));
+            ADD_INSN1(ret, line, topn, INT2FIX(3));
+            ADD_SEND(ret, line, idPLUS, INT2FIX(1));
+
+            ADD_SEND(ret, line, idAREF, INT2FIX(1));
+            CHECK(iseq_compile_pattern_match(iseq, ret, args->nd_head, match_failed, in_alt_pattern, FALSE));
+            args = args->nd_next;
+        }
+
+        ADD_INSN(ret, line, pop);
+        if (use_rest_num) {
+            ADD_INSN(ret, line, pop);
+        }
+        ADD_INSNL(ret, line, jump, matched);
+        ADD_INSN(ret, line, putnil);
+        if (use_rest_num) {
+            ADD_INSN(ret, line, putnil);
+        }
+
+        ADD_LABEL(ret, type_error);
+        ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+        ADD_INSN1(ret, line, putobject, rb_eTypeError);
+        ADD_INSN1(ret, line, putobject, rb_fstring_lit("deconstruct must return Array"));
+        ADD_SEND(ret, line, id_core_raise, INT2FIX(2));
+        ADD_INSN(ret, line, pop);
+
+        ADD_LABEL(ret, match_failed);
+        ADD_INSN(ret, line, pop);
+        if (use_rest_num) {
+            ADD_INSN(ret, line, pop);
+        }
+        ADD_INSNL(ret, line, jump, unmatched);
+
+        break;
       }
-      case NODE_OPT_N:
-      case NODE_WHILE:
-      case NODE_UNTIL:{
-	LABEL *prev_start_label = iseq->compile_data->start_label;
-	LABEL *prev_end_label = iseq->compile_data->end_label;
-	LABEL *prev_redo_label = iseq->compile_data->redo_label;
-	VALUE prev_loopval_popped = iseq->compile_data->loopval_popped;
+      case NODE_FNDPTN: {
+        /*
+         *   if pattern.has_constant_node?
+         *     unless pattern.constant === obj
+         *       goto match_failed
+         *     end
+         *   end
+         *   unless obj.respond_to?(:deconstruct)
+         *     goto match_failed
+         *   end
+         *   d = obj.deconstruct
+         *   unless Array === d
+         *     goto type_error
+         *   end
+         *   unless d.length >= pattern.args_num
+         *     goto match_failed
+         *   end
+         *
+         *   begin
+         *     len = d.length
+         *     limit = d.length - pattern.args_num
+         *     i = 0
+         *     while i <= limit
+         *       if pattern.args_num.times.all? {|j| pattern.args[j].match?(d[i+j]) }
+         *         if pattern.has_pre_rest_arg_id
+         *           unless pattern.pre_rest_arg.match?(d[0, i])
+         *             goto find_failed
+         *           end
+         *         end
+         *         if pattern.has_post_rest_arg_id
+         *           unless pattern.post_rest_arg.match?(d[i+pattern.args_num, len])
+         *             goto find_failed
+         *           end
+         *         end
+         *         goto find_succeeded
+         *       end
+         *       i+=1
+         *     end
+         *   find_failed:
+         *     goto match_failed
+         *   find_succeeded:
+         *   end
+         *
+         *   goto matched
+         * type_error:
+         *   FrozenCore.raise TypeError
+         * match_failed:
+         *   goto unmatched
+         */
+        struct rb_fnd_pattern_info *fpinfo = node->nd_fpinfo;
+        const NODE *args = fpinfo->args;
+        const int args_num = fpinfo->args ? rb_long2int(fpinfo->args->nd_alen) : 0;
+
+        LABEL *match_failed, *type_error, *deconstruct, *deconstructed;
+        match_failed = NEW_LABEL(line);
+        type_error = NEW_LABEL(line);
+        deconstruct = NEW_LABEL(line);
+        deconstructed = NEW_LABEL(line);
+
+        if (node->nd_pconst) {
+            ADD_INSN(ret, line, dup);
+            CHECK(COMPILE(ret, "constant", node->nd_pconst));
+            ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
+            ADD_INSNL(ret, line, branchunless, match_failed);
+        }
+
+        CHECK(iseq_compile_array_deconstruct(iseq, ret, node, deconstruct, deconstructed, match_failed, type_error, deconstructed_pos));
+
+        ADD_INSN(ret, line, dup);
+        ADD_SEND(ret, line, idLength, INT2FIX(0));
+        ADD_INSN1(ret, line, putobject, INT2FIX(args_num));
+        ADD_SEND(ret, line, idGE, INT2FIX(1));
+        ADD_INSNL(ret, line, branchunless, match_failed);
+
+        {
+            LABEL *while_begin = NEW_LABEL(nd_line(node));
+            LABEL *next_loop = NEW_LABEL(nd_line(node));
+            LABEL *find_succeeded = NEW_LABEL(line);
+            LABEL *find_failed = NEW_LABEL(nd_line(node));
+            int j;
+
+            ADD_INSN(ret, line, dup); /* allocate stack for len */
+            ADD_SEND(ret, line, idLength, INT2FIX(0));
+
+            ADD_INSN(ret, line, dup); /* allocate stack for limit */
+            ADD_INSN1(ret, line, putobject, INT2FIX(args_num));
+            ADD_SEND(ret, line, idMINUS, INT2FIX(1));
+
+            ADD_INSN1(ret, line, putobject, INT2FIX(0)); /* allocate stack for i */
+
+            ADD_LABEL(ret, while_begin);
+
+            ADD_INSN(ret, line, dup);
+            ADD_INSN1(ret, line, topn, INT2FIX(2));
+            ADD_SEND(ret, line, idLE, INT2FIX(1));
+            ADD_INSNL(ret, line, branchunless, find_failed);
+
+            for (j = 0; j < args_num; j++) {
+                ADD_INSN1(ret, line, topn, INT2FIX(3));
+                ADD_INSN1(ret, line, topn, INT2FIX(1));
+                if (j != 0) {
+                    ADD_INSN1(ret, line, putobject, INT2FIX(j));
+                    ADD_SEND(ret, line, idPLUS, INT2FIX(1));
+                }
+                ADD_SEND(ret, line, idAREF, INT2FIX(1));
+
+                CHECK(iseq_compile_pattern_match(iseq, ret, args->nd_head, next_loop, in_alt_pattern, FALSE));
+                args = args->nd_next;
+            }
+
+            if (NODE_NAMED_REST_P(fpinfo->pre_rest_arg)) {
+                ADD_INSN1(ret, line, topn, INT2FIX(3));
+                ADD_INSN1(ret, line, putobject, INT2FIX(0));
+                ADD_INSN1(ret, line, topn, INT2FIX(2));
+                ADD_SEND(ret, line, idAREF, INT2FIX(2));
+                CHECK(iseq_compile_pattern_match(iseq, ret, fpinfo->pre_rest_arg, find_failed, in_alt_pattern, FALSE));
+            }
+            if (NODE_NAMED_REST_P(fpinfo->post_rest_arg)) {
+                ADD_INSN1(ret, line, topn, INT2FIX(3));
+                ADD_INSN1(ret, line, topn, INT2FIX(1));
+                ADD_INSN1(ret, line, putobject, INT2FIX(args_num));
+                ADD_SEND(ret, line, idPLUS, INT2FIX(1));
+                ADD_INSN1(ret, line, topn, INT2FIX(3));
+                ADD_SEND(ret, line, idAREF, INT2FIX(2));
+                CHECK(iseq_compile_pattern_match(iseq, ret, fpinfo->post_rest_arg, find_failed, in_alt_pattern, FALSE));
+            }
+            ADD_INSNL(ret, line, jump, find_succeeded);
+
+            ADD_LABEL(ret, next_loop);
+            ADD_INSN1(ret, line, putobject, INT2FIX(1));
+            ADD_SEND(ret, line, idPLUS, INT2FIX(1));
+            ADD_INSNL(ret, line, jump, while_begin);
+
+            ADD_LABEL(ret, find_failed);
+            ADD_INSN(ret, line, pop);
+            ADD_INSN(ret, line, pop);
+            ADD_INSN(ret, line, pop);
+            ADD_INSNL(ret, line, jump, match_failed);
+            ADD_INSN1(ret, line, dupn, INT2FIX(3));
+
+            ADD_LABEL(ret, find_succeeded);
+            ADD_INSN(ret, line, pop);
+            ADD_INSN(ret, line, pop);
+            ADD_INSN(ret, line, pop);
+        }
+
+        ADD_INSN(ret, line, pop);
+        ADD_INSNL(ret, line, jump, matched);
+        ADD_INSN(ret, line, putnil);
+
+        ADD_LABEL(ret, type_error);
+        ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+        ADD_INSN1(ret, line, putobject, rb_eTypeError);
+        ADD_INSN1(ret, line, putobject, rb_fstring_lit("deconstruct must return Array"));
+        ADD_SEND(ret, line, id_core_raise, INT2FIX(2));
+        ADD_INSN(ret, line, pop);
+
+        ADD_LABEL(ret, match_failed);
+        ADD_INSN(ret, line, pop);
+        ADD_INSNL(ret, line, jump, unmatched);
+
+        break;
+      }
+      case NODE_HSHPTN: {
+        /*
+         *   keys = nil
+         *   if pattern.has_kw_args_node? && !pattern.has_kw_rest_arg_node?
+         *     keys = pattern.kw_args_node.keys
+         *   end
+         *   if pattern.has_constant_node?
+         *     unless pattern.constant === obj
+         *       goto match_failed
+         *     end
+         *   end
+         *   unless obj.respond_to?(:deconstruct_keys)
+         *     goto match_failed
+         *   end
+         *   d = obj.deconstruct_keys(keys)
+         *   unless Hash === d
+         *     goto type_error
+         *   end
+         *   if pattern.has_kw_rest_arg_node?
+         *     d = d.dup
+         *   end
+         *   if pattern.has_kw_args_node?
+         *     pattern.kw_args_node.each |k,|
+         *       unless d.key?(k)
+         *         goto match_failed
+         *       end
+         *     end
+         *     pattern.kw_args_node.each |k, pat|
+         *       if pattern.has_kw_rest_arg_node?
+         *         unless pat.match?(d.delete(k))
+         *           goto match_failed
+         *         end
+         *       else
+         *         unless pat.match?(d[k])
+         *           goto match_failed
+         *         end
+         *       end
+         *     end
+         *   else
+         *     unless d.empty?
+         *       goto match_failed
+         *     end
+         *   end
+         *   if pattern.has_kw_rest_arg_node?
+         *     if pattern.no_rest_keyword?
+         *       unless d.empty?
+         *         goto match_failed
+         *       end
+         *     else
+         *       unless pattern.kw_rest_arg_node.match?(d)
+         *         goto match_failed
+         *       end
+         *     end
+         *   end
+         *   goto matched
+         * type_error:
+         *   FrozenCore.raise TypeError
+         * match_failed:
+         *   goto unmatched
+         */
+        LABEL *match_failed, *type_error;
+        VALUE keys = Qnil;
+
+        match_failed = NEW_LABEL(line);
+        type_error = NEW_LABEL(line);
+
+        if (node->nd_pkwargs && !node->nd_pkwrestarg) {
+            const NODE *kw_args = node->nd_pkwargs->nd_head;
+            keys = rb_ary_new_capa(kw_args ? kw_args->nd_alen/2 : 0);
+            while (kw_args) {
+                rb_ary_push(keys, kw_args->nd_head->nd_lit);
+                kw_args = kw_args->nd_next->nd_next;
+            }
+        }
+
+        if (node->nd_pconst) {
+            ADD_INSN(ret, line, dup);
+            CHECK(COMPILE(ret, "constant", node->nd_pconst));
+            ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
+            ADD_INSNL(ret, line, branchunless, match_failed);
+        }
+
+        ADD_INSN(ret, line, dup);
+        ADD_INSN1(ret, line, putobject, ID2SYM(rb_intern("deconstruct_keys")));
+        ADD_SEND(ret, line, idRespond_to, INT2FIX(1));
+        ADD_INSNL(ret, line, branchunless, match_failed);
+
+        if (NIL_P(keys)) {
+            ADD_INSN(ret, line, putnil);
+        }
+        else {
+            ADD_INSN1(ret, line, duparray, keys);
+            RB_OBJ_WRITTEN(iseq, Qundef, rb_obj_hide(keys));
+        }
+        ADD_SEND(ret, line, rb_intern("deconstruct_keys"), INT2FIX(1));
+
+        ADD_INSN(ret, line, dup);
+        ADD_INSN1(ret, line, checktype, INT2FIX(T_HASH));
+        ADD_INSNL(ret, line, branchunless, type_error);
+
+        if (node->nd_pkwrestarg) {
+            ADD_SEND(ret, line, rb_intern("dup"), INT2FIX(0));
+        }
+
+        if (node->nd_pkwargs) {
+            int i;
+            int keys_num;
+            const NODE *args;
+            args = node->nd_pkwargs->nd_head;
+            if (args) {
+                DECL_ANCHOR(match_values);
+                INIT_ANCHOR(match_values);
+                keys_num = rb_long2int(args->nd_alen) / 2;
+                for (i = 0; i < keys_num; i++) {
+                    NODE *key_node = args->nd_head;
+                    NODE *value_node = args->nd_next->nd_head;
+                    VALUE key;
+
+                    if (nd_type(key_node) != NODE_LIT) {
+                        UNKNOWN_NODE("NODE_IN", key_node, COMPILE_NG);
+                    }
+                    key = key_node->nd_lit;
+
+                    ADD_INSN(ret, line, dup);
+                    ADD_INSN1(ret, line, putobject, key);
+                    ADD_SEND(ret, line, rb_intern("key?"), INT2FIX(1));
+                    ADD_INSNL(ret, line, branchunless, match_failed);
+
+                    ADD_INSN(match_values, line, dup);
+                    ADD_INSN1(match_values, line, putobject, key);
+                    ADD_SEND(match_values, line, node->nd_pkwrestarg ? rb_intern("delete") : idAREF, INT2FIX(1));
+                    CHECK(iseq_compile_pattern_match(iseq, match_values, value_node, match_failed, in_alt_pattern, FALSE));
+                    args = args->nd_next->nd_next;
+                }
+                ADD_SEQ(ret, match_values);
+            }
+        }
+        else {
+            ADD_INSN(ret, line, dup);
+            ADD_SEND(ret, line, idEmptyP, INT2FIX(0));
+            ADD_INSNL(ret, line, branchunless, match_failed);
+        }
+
+        if (node->nd_pkwrestarg) {
+            if (node->nd_pkwrestarg == NODE_SPECIAL_NO_REST_KEYWORD) {
+                ADD_INSN(ret, line, dup);
+                ADD_SEND(ret, line, idEmptyP, INT2FIX(0));
+                ADD_INSNL(ret, line, branchunless, match_failed);
+            }
+            else {
+                ADD_INSN(ret, line, dup);
+                CHECK(iseq_compile_pattern_match(iseq, ret, node->nd_pkwrestarg, match_failed, in_alt_pattern, FALSE));
+            }
+        }
+
+        ADD_INSN(ret, line, pop);
+        ADD_INSNL(ret, line, jump, matched);
+        ADD_INSN(ret, line, putnil);
+
+        ADD_LABEL(ret, type_error);
+        ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+        ADD_INSN1(ret, line, putobject, rb_eTypeError);
+        ADD_INSN1(ret, line, putobject, rb_fstring_lit("deconstruct_keys must return Hash"));
+        ADD_SEND(ret, line, id_core_raise, INT2FIX(2));
+        ADD_INSN(ret, line, pop);
+
+        ADD_LABEL(ret, match_failed);
+        ADD_INSN(ret, line, pop);
+        ADD_INSNL(ret, line, jump, unmatched);
+        break;
+      }
+      case NODE_LIT:
+      case NODE_STR:
+      case NODE_XSTR:
+      case NODE_DSTR:
+      case NODE_DSYM:
+      case NODE_DREGX:
+      case NODE_LIST:
+      case NODE_ZLIST:
+      case NODE_LAMBDA:
+      case NODE_DOT2:
+      case NODE_DOT3:
+      case NODE_CONST:
+      case NODE_LVAR:
+      case NODE_DVAR:
+      case NODE_TRUE:
+      case NODE_FALSE:
+      case NODE_SELF:
+      case NODE_NIL:
+      case NODE_COLON2:
+      case NODE_COLON3:
+        CHECK(COMPILE(ret, "case in literal", node));
+        ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
+        ADD_INSNL(ret, line, branchif, matched);
+        ADD_INSNL(ret, line, jump, unmatched);
+        break;
+      case NODE_LASGN: {
+        struct rb_iseq_constant_body *const body = iseq->body;
+        ID id = node->nd_vid;
+        int idx = body->local_iseq->body->local_table_size - get_local_var_idx(iseq, id);
+
+        if (in_alt_pattern) {
+            const char *name = rb_id2name(id);
+            if (name && strlen(name) > 0 && name[0] != '_') {
+                COMPILE_ERROR(ERROR_ARGS "illegal variable in alternative pattern (%"PRIsVALUE")",
+                              rb_id2str(id));
+                return COMPILE_NG;
+            }
+        }
+
+        ADD_SETLOCAL(ret, line, idx, get_lvar_level(iseq));
+        ADD_INSNL(ret, line, jump, matched);
+        break;
+      }
+      case NODE_DASGN:
+      case NODE_DASGN_CURR: {
+        int idx, lv, ls;
+        ID id = node->nd_vid;
+
+        idx = get_dyna_var_idx(iseq, id, &lv, &ls);
+
+        if (in_alt_pattern) {
+            const char *name = rb_id2name(id);
+            if (name && strlen(name) > 0 && name[0] != '_') {
+                COMPILE_ERROR(ERROR_ARGS "illegal variable in alternative pattern (%"PRIsVALUE")",
+                              rb_id2str(id));
+                return COMPILE_NG;
+            }
+        }
+
+        if (idx < 0) {
+            COMPILE_ERROR(ERROR_ARGS "NODE_DASGN(_CURR): unknown id (%"PRIsVALUE")",
+                          rb_id2str(id));
+            return COMPILE_NG;
+        }
+        ADD_SETLOCAL(ret, line, ls - idx, lv);
+        ADD_INSNL(ret, line, jump, matched);
+        break;
+      }
+      case NODE_IF:
+      case NODE_UNLESS: {
+        LABEL *match_failed;
+        match_failed = unmatched;
+        CHECK(iseq_compile_pattern_match(iseq, ret, node->nd_body, unmatched, in_alt_pattern, deconstructed_pos));
+        CHECK(COMPILE(ret, "case in if", node->nd_cond));
+        if (nd_type(node) == NODE_IF) {
+            ADD_INSNL(ret, line, branchunless, match_failed);
+        }
+        else {
+            ADD_INSNL(ret, line, branchif, match_failed);
+        }
+        ADD_INSNL(ret, line, jump, matched);
+        break;
+      }
+      case NODE_HASH: {
+        NODE *n;
+        LABEL *match_failed;
+        match_failed = NEW_LABEL(line);
+
+        n = node->nd_head;
+        if (! (nd_type(n) == NODE_LIST && n->nd_alen == 2)) {
+            COMPILE_ERROR(ERROR_ARGS "unexpected node");
+            return COMPILE_NG;
+        }
+
+        ADD_INSN(ret, line, dup);
+        CHECK(iseq_compile_pattern_match(iseq, ret, n->nd_head, match_failed, in_alt_pattern, deconstructed_pos ? deconstructed_pos + 1 : FALSE));
+        CHECK(iseq_compile_pattern_each(iseq, ret, n->nd_next->nd_head, matched, match_failed, in_alt_pattern, FALSE));
+        ADD_INSN(ret, line, putnil);
+
+        ADD_LABEL(ret, match_failed);
+        ADD_INSN(ret, line, pop);
+        ADD_INSNL(ret, line, jump, unmatched);
+        break;
+      }
+      case NODE_OR: {
+        LABEL *match_succeeded, *fin;
+        match_succeeded = NEW_LABEL(line);
+        fin = NEW_LABEL(line);
+
+        ADD_INSN(ret, line, dup);
+        CHECK(iseq_compile_pattern_each(iseq, ret, node->nd_1st, match_succeeded, fin, TRUE, deconstructed_pos ? deconstructed_pos + 1 : FALSE));
+        ADD_LABEL(ret, match_succeeded);
+        ADD_INSN(ret, line, pop);
+        ADD_INSNL(ret, line, jump, matched);
+        ADD_INSN(ret, line, putnil);
+        ADD_LABEL(ret, fin);
+        CHECK(iseq_compile_pattern_each(iseq, ret, node->nd_2nd, matched, unmatched, TRUE, deconstructed_pos));
+        break;
+      }
+      default:
+        UNKNOWN_NODE("NODE_IN", node, COMPILE_NG);
+    }
+    return COMPILE_OK;
+}
 
-	struct iseq_compile_data_ensure_node_stack enl;
+static int
+iseq_compile_pattern_match(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, LABEL *unmatched, int in_alt_pattern, int deconstructed_pos)
+{
+    LABEL *fin = NEW_LABEL(nd_line(node));
+    CHECK(iseq_compile_pattern_each(iseq, ret, node, fin, unmatched, in_alt_pattern, deconstructed_pos));
+    ADD_LABEL(ret, fin);
+    return COMPILE_OK;
+}
 
-	LABEL *next_label = iseq->compile_data->start_label = NEW_LABEL(nd_line(node));	/* next  */
-	LABEL *redo_label = iseq->compile_data->redo_label = NEW_LABEL(nd_line(node));	/* redo  */
-	LABEL *break_label = iseq->compile_data->end_label = NEW_LABEL(nd_line(node));	/* break */
-	LABEL *end_label = NEW_LABEL(nd_line(node));
+static int
+iseq_compile_array_deconstruct(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, LABEL *deconstruct, LABEL *deconstructed, LABEL *match_failed, LABEL *type_error, int deconstructed_pos)
+{
+    const int line = nd_line(node);
+
+    // NOTE: this optimization allows us to re-use the #deconstruct value
+    // (or its absence).
+    // `deconstructed_pos` contains the distance to the stack relative location
+    // where the value is stored.
+    if (deconstructed_pos) {
+        // If value is nil then we haven't tried to deconstruct
+        ADD_INSN1(ret, line, topn, INT2FIX(deconstructed_pos));
+        ADD_INSNL(ret, line, branchnil, deconstruct);
+
+        // If false then the value is not deconstructable
+        ADD_INSN1(ret, line, topn, INT2FIX(deconstructed_pos));
+        ADD_INSNL(ret, line, branchunless, match_failed);
+
+        // Drop value, add deconstructed to the stack and jump
+        ADD_INSN(ret, line, pop);
+        ADD_INSN1(ret, line, topn, INT2FIX(deconstructed_pos - 1));
+        ADD_INSNL(ret, line, jump, deconstructed);
+    }
+    else {
+        ADD_INSNL(ret, line, jump, deconstruct);
+    }
 
-	LABEL *next_catch_label = NEW_LABEL(nd_line(node));
-	LABEL *tmp_label = NULL;
+    ADD_LABEL(ret, deconstruct);
+    ADD_INSN(ret, line, dup);
+    ADD_INSN1(ret, line, putobject, ID2SYM(rb_intern("deconstruct")));
+    ADD_SEND(ret, line, idRespond_to, INT2FIX(1));
 
-	iseq->compile_data->loopval_popped = 0;
-	push_ensure_entry(iseq, &enl, 0, 0);
+    // Cache the result of respond_to? (in case it's false is stays there, if true - it's overwritten after #deconstruct)
+    if (deconstructed_pos) {
+        ADD_INSN1(ret, line, setn, INT2FIX(deconstructed_pos + 1));
+    }
 
-	if (type == NODE_OPT_N || node->nd_state == 1) {
-	    ADD_INSNL(ret, nd_line(node), jump, next_label);
-	}
-	else {
-	    tmp_label = NEW_LABEL(nd_line(node));
-	    ADD_INSNL(ret, nd_line(node), jump, tmp_label);
-	}
-	ADD_INSN(ret, nd_line(node), putnil);
-	ADD_LABEL(ret, next_catch_label);
-	ADD_INSN(ret, nd_line(node), pop);
-	ADD_INSNL(ret, nd_line(node), jump, next_label);
-	if (tmp_label) ADD_LABEL(ret, tmp_label);
+    ADD_INSNL(ret, line, branchunless, match_failed);
 
-	ADD_LABEL(ret, redo_label);
-	COMPILE_POPED(ret, "while body", node->nd_body);
-	ADD_LABEL(ret, next_label);	/* next */
+    ADD_SEND(ret, line, rb_intern("deconstruct"), INT2FIX(0));
 
-	if (type == NODE_WHILE) {
-	    compile_branch_condition(iseq, ret, node->nd_cond,
-				     redo_label, end_label);
-	}
-	else if (type == NODE_UNTIL) {
-	    /* untile */
-	    compile_branch_condition(iseq, ret, node->nd_cond,
-				     end_label, redo_label);
-	}
-	else {
-	    ADD_CALL_RECEIVER(ret, nd_line(node));
-	    ADD_CALL(ret, nd_line(node), ID2SYM(idGets), INT2FIX(0));
-	    ADD_INSNL(ret, nd_line(node), branchif, redo_label);
-	    /* opt_n */
-	}
+    // Cache the result (if it's cacheable - currently, only top-level array patterns)
+    if (deconstructed_pos) {
+        ADD_INSN1(ret, line, setn, INT2FIX(deconstructed_pos));
+    }
 
-	ADD_LABEL(ret, end_label);
+    ADD_INSN(ret, line, dup);
+    ADD_INSN1(ret, line, checktype, INT2FIX(T_ARRAY));
+    ADD_INSNL(ret, line, branchunless, type_error);
+    ADD_INSNL(ret, line, jump, deconstructed);
 
-	if (node->nd_state == Qundef) {
-	    /* ADD_INSN(ret, nd_line(node), putundef); */
-	    rb_bug("unsupported: putundef");
-	}
-	else {
-	    ADD_INSN(ret, nd_line(node), putnil);
-	}
+    ADD_LABEL(ret, deconstructed);
 
-	ADD_LABEL(ret, break_label);	/* break */
+    return COMPILE_OK;
+}
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	}
+static int
+compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_node, int popped)
+{
+    const NODE *pattern;
+    const NODE *node = orig_node;
+    LABEL *endlabel, *elselabel;
+    DECL_ANCHOR(head);
+    DECL_ANCHOR(body_seq);
+    DECL_ANCHOR(cond_seq);
+    int line;
+    enum node_type type;
+    VALUE branches = 0;
+    int branch_id = 0;
 
-	ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, redo_label, break_label,
-			0, break_label);
-	ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, redo_label, break_label, 0,
-			next_catch_label);
-	ADD_CATCH_ENTRY(CATCH_TYPE_REDO, redo_label, break_label, 0,
-			iseq->compile_data->redo_label);
+    INIT_ANCHOR(head);
+    INIT_ANCHOR(body_seq);
+    INIT_ANCHOR(cond_seq);
 
-	iseq->compile_data->start_label = prev_start_label;
-	iseq->compile_data->end_label = prev_end_label;
-	iseq->compile_data->redo_label = prev_redo_label;
-	iseq->compile_data->loopval_popped = prev_loopval_popped;
-	iseq->compile_data->ensure_node_stack = iseq->compile_data->ensure_node_stack->prev;
-	break;
-      }
-      case NODE_ITER:
-      case NODE_FOR:{
-	VALUE prevblock = iseq->compile_data->current_block;
-	LABEL *retry_label = NEW_LABEL(nd_line(node));
-	LABEL *retry_end_l = NEW_LABEL(nd_line(node));
-	ID mid = 0;
+    branches = decl_branch_base(iseq, node, "case");
 
-	ADD_LABEL(ret, retry_label);
-	if (nd_type(node) == NODE_FOR) {
-	    COMPILE(ret, "iter caller (for)", node->nd_iter);
+    node = node->nd_body;
+    EXPECT_NODE("NODE_CASE3", node, NODE_IN, COMPILE_NG);
+    type = nd_type(node);
+    line = nd_line(node);
+
+    endlabel = NEW_LABEL(line);
+    elselabel = NEW_LABEL(line);
+
+    ADD_INSN(head, line, putnil); /* allocate stack for cached #deconstruct value */
+
+    CHECK(COMPILE(head, "case base", orig_node->nd_head));
+
+    ADD_SEQ(ret, head);	/* case VAL */
+
+    while (type == NODE_IN) {
+        LABEL *l1;
+
+        if (branch_id) {
+            ADD_INSN(body_seq, line, putnil);
+        }
+        l1 = NEW_LABEL(line);
+        ADD_LABEL(body_seq, l1);
+        ADD_INSN(body_seq, line, pop);
+        ADD_INSN(body_seq, line, pop); /* discard cached #deconstruct value */
+        add_trace_branch_coverage(
+            iseq,
+            body_seq,
+            node->nd_body ? node->nd_body : node,
+            branch_id++,
+            "in",
+            branches);
+        CHECK(COMPILE_(body_seq, "in body", node->nd_body, popped));
+        ADD_INSNL(body_seq, line, jump, endlabel);
+
+        pattern = node->nd_head;
+        if (pattern) {
+            int pat_line = nd_line(pattern);
+            LABEL *next_pat = NEW_LABEL(pat_line);
+            ADD_INSN (cond_seq, pat_line, dup);
+            // NOTE: set deconstructed_pos to the current cached value location
+            // (it's "under" the matchee value, so it's position is 2)
+            CHECK(iseq_compile_pattern_each(iseq, cond_seq, pattern, l1, next_pat, FALSE, 2));
+            ADD_LABEL(cond_seq, next_pat);
+            LABEL_UNREMOVABLE(next_pat);
+        }
+        else {
+            COMPILE_ERROR(ERROR_ARGS "unexpected node");
+            return COMPILE_NG;
+        }
+
+        node = node->nd_next;
+        if (!node) {
+            break;
+        }
+        type = nd_type(node);
+        line = nd_line(node);
+    }
+    /* else */
+    if (node) {
+        ADD_LABEL(cond_seq, elselabel);
+        ADD_INSN(cond_seq, line, pop);
+        ADD_INSN(cond_seq, line, pop); /* discard cached #deconstruct value */
+        add_trace_branch_coverage(iseq, cond_seq, node, branch_id, "else", branches);
+        CHECK(COMPILE_(cond_seq, "else", node, popped));
+        ADD_INSNL(cond_seq, line, jump, endlabel);
+        ADD_INSN(cond_seq, line, putnil);
+        if (popped) {
+            ADD_INSN(cond_seq, line, putnil);
+        }
+    }
+    else {
+        debugs("== else (implicit)\n");
+        ADD_LABEL(cond_seq, elselabel);
+        add_trace_branch_coverage(iseq, cond_seq, orig_node, branch_id, "else", branches);
+        ADD_INSN1(cond_seq, nd_line(orig_node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+        ADD_INSN1(cond_seq, nd_line(orig_node), putobject, rb_eNoMatchingPatternError);
+        ADD_INSN1(cond_seq, nd_line(orig_node), topn, INT2FIX(2));
+        ADD_SEND(cond_seq, nd_line(orig_node), id_core_raise, INT2FIX(2));
+        ADD_INSN(cond_seq, nd_line(orig_node), pop);
+        ADD_INSN(cond_seq, nd_line(orig_node), pop);
+        ADD_INSN(cond_seq, nd_line(orig_node), pop); /* discard cached #deconstruct value */
+        if (!popped) {
+            ADD_INSN(cond_seq, nd_line(orig_node), putnil);
+        }
+        ADD_INSNL(cond_seq, nd_line(orig_node), jump, endlabel);
+        ADD_INSN(cond_seq, line, putnil);
+        if (popped) {
+            ADD_INSN(cond_seq, line, putnil);
+        }
+    }
 
-	    iseq->compile_data->current_block =
-		NEW_CHILD_ISEQVAL(node->nd_body, make_name_for_block(iseq),
-				  ISEQ_TYPE_BLOCK);
+    ADD_SEQ(ret, cond_seq);
+    ADD_SEQ(ret, body_seq);
+    ADD_LABEL(ret, endlabel);
+    return COMPILE_OK;
+}
 
-	    mid = idEach;
-	    ADD_SEND_R(ret, nd_line(node), ID2SYM(idEach), INT2FIX(0),
-		       iseq->compile_data->current_block, INT2FIX(0));
-	}
-	else {
-	    iseq->compile_data->current_block =
-		NEW_CHILD_ISEQVAL(node->nd_body, make_name_for_block(iseq),
-				  ISEQ_TYPE_BLOCK);
-	    COMPILE(ret, "iter caller", node->nd_iter);
-	}
-	ADD_LABEL(ret, retry_end_l);
+static int
+compile_loop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped, const enum node_type type)
+{
+    const int line = (int)nd_line(node);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	}
+    LABEL *prev_start_label = ISEQ_COMPILE_DATA(iseq)->start_label;
+    LABEL *prev_end_label = ISEQ_COMPILE_DATA(iseq)->end_label;
+    LABEL *prev_redo_label = ISEQ_COMPILE_DATA(iseq)->redo_label;
+    int prev_loopval_popped = ISEQ_COMPILE_DATA(iseq)->loopval_popped;
+    VALUE branches = Qfalse;
 
-	iseq->compile_data->current_block = prevblock;
+    struct iseq_compile_data_ensure_node_stack enl;
 
-	ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, retry_label, retry_end_l, 0, retry_end_l);
+    LABEL *next_label = ISEQ_COMPILE_DATA(iseq)->start_label = NEW_LABEL(line);	/* next  */
+    LABEL *redo_label = ISEQ_COMPILE_DATA(iseq)->redo_label = NEW_LABEL(line);	/* redo  */
+    LABEL *break_label = ISEQ_COMPILE_DATA(iseq)->end_label = NEW_LABEL(line);	/* break */
+    LABEL *end_label = NEW_LABEL(line);
+    LABEL *adjust_label = NEW_LABEL(line);
 
-	break;
-      }
-      case NODE_BREAK:{
-	unsigned long level = 0;
+    LABEL *next_catch_label = NEW_LABEL(line);
+    LABEL *tmp_label = NULL;
 
-	if (iseq->compile_data->redo_label != 0) {
-	    /* while/until */
-	    LABEL *splabel = NEW_LABEL(0);
-	    ADD_LABEL(ret, splabel);
-	    ADD_ADJUST(ret, nd_line(node), iseq->compile_data->redo_label);
-	    COMPILE_(ret, "break val (while/until)", node->nd_stts, iseq->compile_data->loopval_popped);
-	    add_ensure_iseq(ret, iseq, 0);
-	    ADD_INSNL(ret, nd_line(node), jump, iseq->compile_data->end_label);
-	    ADD_ADJUST_RESTORE(ret, splabel);
+    ISEQ_COMPILE_DATA(iseq)->loopval_popped = 0;
+    push_ensure_entry(iseq, &enl, NULL, NULL);
 
-	    if (!poped) {
-		ADD_INSN(ret, nd_line(node), putnil);
-	    }
+    if (node->nd_state == 1) {
+	ADD_INSNL(ret, line, jump, next_label);
+    }
+    else {
+	tmp_label = NEW_LABEL(line);
+	ADD_INSNL(ret, line, jump, tmp_label);
+    }
+    ADD_LABEL(ret, adjust_label);
+    ADD_INSN(ret, line, putnil);
+    ADD_LABEL(ret, next_catch_label);
+    ADD_INSN(ret, line, pop);
+    ADD_INSNL(ret, line, jump, next_label);
+    if (tmp_label) ADD_LABEL(ret, tmp_label);
+
+    ADD_LABEL(ret, redo_label);
+    branches = decl_branch_base(iseq, node, type == NODE_WHILE ? "while" : "until");
+    add_trace_branch_coverage(
+        iseq,
+	ret,
+        node->nd_body ? node->nd_body : node,
+        0,
+	"body",
+	branches);
+    CHECK(COMPILE_POPPED(ret, "while body", node->nd_body));
+    ADD_LABEL(ret, next_label);	/* next */
+
+    if (type == NODE_WHILE) {
+	compile_branch_condition(iseq, ret, node->nd_cond,
+				 redo_label, end_label);
+    }
+    else {
+	/* until */
+	compile_branch_condition(iseq, ret, node->nd_cond,
+				 end_label, redo_label);
+    }
+
+    ADD_LABEL(ret, end_label);
+    ADD_ADJUST_RESTORE(ret, adjust_label);
+
+    if (node->nd_state == Qundef) {
+	/* ADD_INSN(ret, line, putundef); */
+	COMPILE_ERROR(ERROR_ARGS "unsupported: putundef");
+	return COMPILE_NG;
+    }
+    else {
+	ADD_INSN(ret, line, putnil);
+    }
+
+    ADD_LABEL(ret, break_label);	/* break */
+
+    if (popped) {
+	ADD_INSN(ret, line, pop);
+    }
+
+    ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, redo_label, break_label, NULL,
+		    break_label);
+    ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, redo_label, break_label, NULL,
+		    next_catch_label);
+    ADD_CATCH_ENTRY(CATCH_TYPE_REDO, redo_label, break_label, NULL,
+		    ISEQ_COMPILE_DATA(iseq)->redo_label);
+
+    ISEQ_COMPILE_DATA(iseq)->start_label = prev_start_label;
+    ISEQ_COMPILE_DATA(iseq)->end_label = prev_end_label;
+    ISEQ_COMPILE_DATA(iseq)->redo_label = prev_redo_label;
+    ISEQ_COMPILE_DATA(iseq)->loopval_popped = prev_loopval_popped;
+    ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack->prev;
+    return COMPILE_OK;
+}
+
+static int
+compile_iter(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+    const rb_iseq_t *prevblock = ISEQ_COMPILE_DATA(iseq)->current_block;
+    LABEL *retry_label = NEW_LABEL(line);
+    LABEL *retry_end_l = NEW_LABEL(line);
+    const rb_iseq_t *child_iseq;
+
+    ADD_LABEL(ret, retry_label);
+    if (nd_type(node) == NODE_FOR) {
+	CHECK(COMPILE(ret, "iter caller (for)", node->nd_iter));
+
+	ISEQ_COMPILE_DATA(iseq)->current_block = child_iseq =
+	    NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq),
+			   ISEQ_TYPE_BLOCK, line);
+	ADD_SEND_WITH_BLOCK(ret, line, idEach, INT2FIX(0), child_iseq);
+    }
+    else {
+	ISEQ_COMPILE_DATA(iseq)->current_block = child_iseq =
+	    NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq),
+			   ISEQ_TYPE_BLOCK, line);
+	CHECK(COMPILE(ret, "iter caller", node->nd_iter));
+    }
+    ADD_LABEL(ret, retry_end_l);
+
+    if (popped) {
+	ADD_INSN(ret, line, pop);
+    }
+
+    ISEQ_COMPILE_DATA(iseq)->current_block = prevblock;
+
+    ADD_CATCH_ENTRY(CATCH_TYPE_BREAK, retry_label, retry_end_l, child_iseq, retry_end_l);
+    return COMPILE_OK;
+}
+
+static int
+compile_for_masgn(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    /* massign to var in "for"
+     * (args.length == 1 && Array.try_convert(args[0])) || args
+     */
+    const int line = nd_line(node);
+    const NODE *var = node->nd_var;
+    LABEL *not_single = NEW_LABEL(nd_line(var));
+    LABEL *not_ary = NEW_LABEL(nd_line(var));
+    CHECK(COMPILE(ret, "for var", var));
+    ADD_INSN(ret, line, dup);
+    ADD_CALL(ret, line, idLength, INT2FIX(0));
+    ADD_INSN1(ret, line, putobject, INT2FIX(1));
+    ADD_CALL(ret, line, idEq, INT2FIX(1));
+    ADD_INSNL(ret, line, branchunless, not_single);
+    ADD_INSN(ret, line, dup);
+    ADD_INSN1(ret, line, putobject, INT2FIX(0));
+    ADD_CALL(ret, line, idAREF, INT2FIX(1));
+    ADD_INSN1(ret, line, putobject, rb_cArray);
+    ADD_INSN(ret, line, swap);
+    ADD_CALL(ret, line, rb_intern("try_convert"), INT2FIX(1));
+    ADD_INSN(ret, line, dup);
+    ADD_INSNL(ret, line, branchunless, not_ary);
+    ADD_INSN(ret, line, swap);
+    ADD_LABEL(ret, not_ary);
+    ADD_INSN(ret, line, pop);
+    ADD_LABEL(ret, not_single);
+    return COMPILE_OK;
+}
+
+static int
+compile_break(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+    unsigned long throw_flag = 0;
+
+    if (ISEQ_COMPILE_DATA(iseq)->redo_label != 0) {
+	/* while/until */
+	LABEL *splabel = NEW_LABEL(0);
+	ADD_LABEL(ret, splabel);
+	ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
+	CHECK(COMPILE_(ret, "break val (while/until)", node->nd_stts,
+		       ISEQ_COMPILE_DATA(iseq)->loopval_popped));
+	add_ensure_iseq(ret, iseq, 0);
+	ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
+	ADD_ADJUST_RESTORE(ret, splabel);
+
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
 	}
-	else if (iseq->type == ISEQ_TYPE_BLOCK) {
-	  break_by_insn:
-	    /* escape from block */
-	    COMPILE(ret, "break val (block)", node->nd_stts);
-	    ADD_INSN1(ret, nd_line(node), throw, INT2FIX(level | 0x02) /* TAG_BREAK */ );
-	    if (poped) {
-		ADD_INSN(ret, nd_line(node), pop);
+    }
+    else {
+        const rb_iseq_t *ip = iseq;
+
+	while (ip) {
+	    if (!ISEQ_COMPILE_DATA(ip)) {
+		ip = 0;
+		break;
+	    }
+
+	    if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
+                throw_flag = VM_THROW_NO_ESCAPE_FLAG;
 	    }
+	    else if (ip->body->type == ISEQ_TYPE_BLOCK) {
+                throw_flag = 0;
+	    }
+	    else if (ip->body->type == ISEQ_TYPE_EVAL) {
+                COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with break");
+                return COMPILE_NG;
+	    }
+            else {
+                ip = ip->body->parent_iseq;
+                continue;
+            }
+
+            /* escape from block */
+            CHECK(COMPILE(ret, "break val (block)", node->nd_stts));
+            ADD_INSN1(ret, line, throw, INT2FIX(throw_flag | TAG_BREAK));
+            if (popped) {
+                ADD_INSN(ret, line, pop);
+            }
+            return COMPILE_OK;
+	}
+	COMPILE_ERROR(ERROR_ARGS "Invalid break");
+	return COMPILE_NG;
+    }
+    return COMPILE_OK;
+}
+
+static int
+compile_next(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+    unsigned long throw_flag = 0;
+
+    if (ISEQ_COMPILE_DATA(iseq)->redo_label != 0) {
+	LABEL *splabel = NEW_LABEL(0);
+	debugs("next in while loop\n");
+	ADD_LABEL(ret, splabel);
+	CHECK(COMPILE(ret, "next val/valid syntax?", node->nd_stts));
+	add_ensure_iseq(ret, iseq, 0);
+	ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
+	ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->start_label);
+	ADD_ADJUST_RESTORE(ret, splabel);
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
 	}
-	else if (iseq->type == ISEQ_TYPE_EVAL) {
-	  break_in_eval:
-	    COMPILE_ERROR((ERROR_ARGS "Can't escape from eval with break"));
+    }
+    else if (ISEQ_COMPILE_DATA(iseq)->end_label) {
+	LABEL *splabel = NEW_LABEL(0);
+	debugs("next in block\n");
+	ADD_LABEL(ret, splabel);
+	ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->start_label);
+	CHECK(COMPILE(ret, "next val", node->nd_stts));
+	add_ensure_iseq(ret, iseq, 0);
+	ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
+	ADD_ADJUST_RESTORE(ret, splabel);
+	splabel->unremovable = FALSE;
+
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
 	}
-	else {
-	    rb_iseq_t *ip = iseq->parent_iseq;
-	    while (ip) {
-		if (!ip->compile_data) {
-		    ip = 0;
-		    break;
-		}
+    }
+    else {
+	const rb_iseq_t *ip = iseq;
 
-		level++;
-		if (ip->compile_data->redo_label != 0) {
-		    level = 0x8000;
-		    if (ip->compile_data->loopval_popped == 0) {
-			/* need value */
-			level |= 0x4000;
-		    }
-		    goto break_by_insn;
-		}
-		else if (ip->type == ISEQ_TYPE_BLOCK) {
-		    level <<= 16;
-		    goto break_by_insn;
-		}
-		else if (ip->type == ISEQ_TYPE_EVAL) {
-		    goto break_in_eval;
-		}
+	while (ip) {
+	    if (!ISEQ_COMPILE_DATA(ip)) {
+		ip = 0;
+		break;
+	    }
 
-		ip = ip->parent_iseq;
+            throw_flag = VM_THROW_NO_ESCAPE_FLAG;
+	    if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
+		/* while loop */
+		break;
+	    }
+	    else if (ip->body->type == ISEQ_TYPE_BLOCK) {
+		break;
+	    }
+	    else if (ip->body->type == ISEQ_TYPE_EVAL) {
+                COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with next");
+                return COMPILE_NG;
 	    }
-	    COMPILE_ERROR((ERROR_ARGS "Invalid break"));
-	}
-	break;
-      }
-      case NODE_NEXT:{
-	unsigned long level = 0;
 
-	if (iseq->compile_data->redo_label != 0) {
-	    LABEL *splabel = NEW_LABEL(0);
-	    debugs("next in while loop\n");
-	    ADD_LABEL(ret, splabel);
-	    COMPILE(ret, "next val/valid syntax?", node->nd_stts);
-	    add_ensure_iseq(ret, iseq, 0);
-	    ADD_ADJUST(ret, nd_line(node), iseq->compile_data->redo_label);
-	    ADD_INSNL(ret, nd_line(node), jump, iseq->compile_data->start_label);
-	    ADD_ADJUST_RESTORE(ret, splabel);
+	    ip = ip->body->parent_iseq;
 	}
-	else if (iseq->compile_data->end_label) {
-	    LABEL *splabel = NEW_LABEL(0);
-	    debugs("next in block\n");
-	    ADD_LABEL(ret, splabel);
-	    ADD_ADJUST(ret, nd_line(node), iseq->compile_data->start_label);
-	    COMPILE(ret, "next val", node->nd_stts);
-	    add_ensure_iseq(ret, iseq, 0);
-	    ADD_INSNL(ret, nd_line(node), jump, iseq->compile_data->end_label);
-	    ADD_ADJUST_RESTORE(ret, splabel);
+	if (ip != 0) {
+	    CHECK(COMPILE(ret, "next val", node->nd_stts));
+            ADD_INSN1(ret, line, throw, INT2FIX(throw_flag | TAG_NEXT));
 
-	    if (!poped) {
-		ADD_INSN(ret, nd_line(node), putnil);
+	    if (popped) {
+		ADD_INSN(ret, line, pop);
 	    }
 	}
-	else if (iseq->type == ISEQ_TYPE_EVAL) {
-	  next_in_eval:
-	    COMPILE_ERROR((ERROR_ARGS "Can't escape from eval with next"));
-	}
 	else {
-	    rb_iseq_t *ip;
-	    ip = iseq;
-	    while (ip) {
-		if (!ip->compile_data) {
-		    ip = 0;
-		    break;
-		}
+	    COMPILE_ERROR(ERROR_ARGS "Invalid next");
+	    return COMPILE_NG;
+	}
+    }
+    return COMPILE_OK;
+}
 
-		level = 0x8000 | 0x4000;
-		if (ip->compile_data->redo_label != 0) {
-		    /* while loop */
-		    break;
-		}
-		else if (ip->type == ISEQ_TYPE_BLOCK) {
-		    break;
-		}
-		else if (ip->type == ISEQ_TYPE_EVAL) {
-		    goto next_in_eval;
-		}
+static int
+compile_redo(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+
+    if (ISEQ_COMPILE_DATA(iseq)->redo_label) {
+	LABEL *splabel = NEW_LABEL(0);
+	debugs("redo in while");
+	ADD_LABEL(ret, splabel);
+	ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
+	add_ensure_iseq(ret, iseq, 0);
+	ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->redo_label);
+	ADD_ADJUST_RESTORE(ret, splabel);
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
+	}
+    }
+    else if (iseq->body->type != ISEQ_TYPE_EVAL && ISEQ_COMPILE_DATA(iseq)->start_label) {
+	LABEL *splabel = NEW_LABEL(0);
+
+	debugs("redo in block");
+	ADD_LABEL(ret, splabel);
+	add_ensure_iseq(ret, iseq, 0);
+	ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->start_label);
+	ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->start_label);
+	ADD_ADJUST_RESTORE(ret, splabel);
+
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
+	}
+    }
+    else {
+	const rb_iseq_t *ip = iseq;
 
-		ip = ip->parent_iseq;
+	while (ip) {
+	    if (!ISEQ_COMPILE_DATA(ip)) {
+		ip = 0;
+		break;
 	    }
-	    if (ip != 0) {
-		COMPILE(ret, "next val", node->nd_stts);
-		ADD_INSN1(ret, nd_line(node), throw, INT2FIX(level | 0x03) /* TAG_NEXT */ );
 
-		if (poped) {
-		    ADD_INSN(ret, nd_line(node), pop);
-		}
+	    if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
+		break;
 	    }
-	    else {
-		COMPILE_ERROR((ERROR_ARGS "Invalid next"));
+	    else if (ip->body->type == ISEQ_TYPE_BLOCK) {
+		break;
+	    }
+	    else if (ip->body->type == ISEQ_TYPE_EVAL) {
+                COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with redo");
+                return COMPILE_NG;
 	    }
+
+	    ip = ip->body->parent_iseq;
 	}
-	break;
-      }
-      case NODE_REDO:{
-	if (iseq->compile_data->redo_label) {
-	    LABEL *splabel = NEW_LABEL(0);
-	    debugs("redo in while");
-	    ADD_LABEL(ret, splabel);
-	    ADD_ADJUST(ret, nd_line(node), iseq->compile_data->redo_label);
-	    add_ensure_iseq(ret, iseq, 0);
-	    ADD_INSNL(ret, nd_line(node), jump, iseq->compile_data->redo_label);
-	    ADD_ADJUST_RESTORE(ret, splabel);
+	if (ip != 0) {
+	    ADD_INSN(ret, line, putnil);
+            ADD_INSN1(ret, line, throw, INT2FIX(VM_THROW_NO_ESCAPE_FLAG | TAG_REDO));
+
+	    if (popped) {
+		ADD_INSN(ret, line, pop);
+	    }
 	}
-	else if (iseq->type == ISEQ_TYPE_EVAL) {
-	  redo_in_eval:
-	    COMPILE_ERROR((ERROR_ARGS "Can't escape from eval with redo"));
+	else {
+	    COMPILE_ERROR(ERROR_ARGS "Invalid redo");
+	    return COMPILE_NG;
 	}
-	else if (iseq->compile_data->start_label) {
-	    LABEL *splabel = NEW_LABEL(0);
+    }
+    return COMPILE_OK;
+}
 
-	    debugs("redo in block");
-	    ADD_LABEL(ret, splabel);
-	    add_ensure_iseq(ret, iseq, 0);
-	    ADD_ADJUST(ret, nd_line(node), iseq->compile_data->start_label);
-	    ADD_INSNL(ret, nd_line(node), jump, iseq->compile_data->start_label);
-	    ADD_ADJUST_RESTORE(ret, splabel);
+static int
+compile_retry(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
 
-	    if (!poped) {
-		ADD_INSN(ret, nd_line(node), putnil);
-	    }
+    if (iseq->body->type == ISEQ_TYPE_RESCUE) {
+	ADD_INSN(ret, line, putnil);
+	ADD_INSN1(ret, line, throw, INT2FIX(TAG_RETRY));
+
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
-	else {
-	    rb_iseq_t *ip;
-	    unsigned long level;
-	    level = 0x8000 | 0x4000;
-	    ip = iseq;
-	    while (ip) {
-		if (!ip->compile_data) {
-		    ip = 0;
-		    break;
-		}
+    }
+    else {
+	COMPILE_ERROR(ERROR_ARGS "Invalid retry");
+	return COMPILE_NG;
+    }
+    return COMPILE_OK;
+}
 
-		if (ip->compile_data->redo_label != 0) {
-		    break;
-		}
-		else if (ip->type == ISEQ_TYPE_BLOCK) {
-		    break;
-		}
-		else if (ip->type == ISEQ_TYPE_EVAL) {
-		    goto redo_in_eval;
-		}
+static int
+compile_rescue(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+    LABEL *lstart = NEW_LABEL(line);
+    LABEL *lend = NEW_LABEL(line);
+    LABEL *lcont = NEW_LABEL(line);
+    const rb_iseq_t *rescue = NEW_CHILD_ISEQ(node->nd_resq,
+					     rb_str_concat(rb_str_new2("rescue in "), iseq->body->location.label),
+					     ISEQ_TYPE_RESCUE, line);
+
+    lstart->rescued = LABEL_RESCUE_BEG;
+    lend->rescued = LABEL_RESCUE_END;
+    ADD_LABEL(ret, lstart);
+    CHECK(COMPILE(ret, "rescue head", node->nd_head));
+    ADD_LABEL(ret, lend);
+    if (node->nd_else) {
+	ADD_INSN(ret, line, pop);
+	CHECK(COMPILE(ret, "rescue else", node->nd_else));
+    }
+    ADD_INSN(ret, line, nop);
+    ADD_LABEL(ret, lcont);
 
-		ip = ip->parent_iseq;
-	    }
-	    if (ip != 0) {
-		ADD_INSN(ret, nd_line(node), putnil);
-		ADD_INSN1(ret, nd_line(node), throw, INT2FIX(level | 0x05) /* TAG_REDO */ );
+    if (popped) {
+	ADD_INSN(ret, line, pop);
+    }
+
+    /* register catch entry */
+    ADD_CATCH_ENTRY(CATCH_TYPE_RESCUE, lstart, lend, rescue, lcont);
+    ADD_CATCH_ENTRY(CATCH_TYPE_RETRY, lend, lcont, NULL, lstart);
+    return COMPILE_OK;
+}
 
-		if (poped) {
-		    ADD_INSN(ret, nd_line(node), pop);
+static int
+compile_resbody(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+    const NODE *resq = node;
+    const NODE *narg;
+    LABEL *label_miss, *label_hit;
+
+    while (resq) {
+	label_miss = NEW_LABEL(line);
+	label_hit = NEW_LABEL(line);
+
+	narg = resq->nd_args;
+	if (narg) {
+	    switch (nd_type(narg)) {
+	      case NODE_LIST:
+		while (narg) {
+		    ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
+		    CHECK(COMPILE(ret, "rescue arg", narg->nd_head));
+		    ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_RESCUE));
+		    ADD_INSNL(ret, line, branchif, label_hit);
+		    narg = narg->nd_next;
 		}
-	    }
-	    else {
-		COMPILE_ERROR((ERROR_ARGS "Invalid redo"));
+		break;
+	      case NODE_SPLAT:
+	      case NODE_ARGSCAT:
+	      case NODE_ARGSPUSH:
+		ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
+		CHECK(COMPILE(ret, "rescue/cond splat", narg));
+		ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_RESCUE | VM_CHECKMATCH_ARRAY));
+		ADD_INSNL(ret, line, branchif, label_hit);
+		break;
+	      default:
+		UNKNOWN_NODE("NODE_RESBODY", narg, COMPILE_NG);
 	    }
 	}
-	break;
-      }
-      case NODE_RETRY:{
-	if (iseq->type == ISEQ_TYPE_RESCUE) {
-	    ADD_INSN(ret, nd_line(node), putnil);
-	    ADD_INSN1(ret, nd_line(node), throw, INT2FIX(0x04) /* TAG_RETRY */ );
+	else {
+	    ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
+	    ADD_INSN1(ret, line, putobject, rb_eStandardError);
+	    ADD_INSN1(ret, line, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_RESCUE));
+	    ADD_INSNL(ret, line, branchif, label_hit);
+	}
+	ADD_INSNL(ret, line, jump, label_miss);
+	ADD_LABEL(ret, label_hit);
+	CHECK(COMPILE(ret, "resbody body", resq->nd_body));
+	if (ISEQ_COMPILE_DATA(iseq)->option->tailcall_optimization) {
+	    ADD_INSN(ret, line, nop);
+	}
+	ADD_INSN(ret, line, leave);
+	ADD_LABEL(ret, label_miss);
+	resq = resq->nd_head;
+    }
+    return COMPILE_OK;
+}
 
-	    if (poped) {
-		ADD_INSN(ret, nd_line(node), pop);
-	    }
+static int
+compile_ensure(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+    DECL_ANCHOR(ensr);
+    const rb_iseq_t *ensure = NEW_CHILD_ISEQ(node->nd_ensr,
+					     rb_str_concat(rb_str_new2 ("ensure in "), iseq->body->location.label),
+					     ISEQ_TYPE_ENSURE, line);
+    LABEL *lstart = NEW_LABEL(line);
+    LABEL *lend = NEW_LABEL(line);
+    LABEL *lcont = NEW_LABEL(line);
+    LINK_ELEMENT *last;
+    int last_leave = 0;
+    struct ensure_range er;
+    struct iseq_compile_data_ensure_node_stack enl;
+    struct ensure_range *erange;
+
+    INIT_ANCHOR(ensr);
+    CHECK(COMPILE_POPPED(ensr, "ensure ensr", node->nd_ensr));
+    last = ensr->last;
+    last_leave = last && IS_INSN(last) && IS_INSN_ID(last, leave);
+
+    er.begin = lstart;
+    er.end = lend;
+    er.next = 0;
+    push_ensure_entry(iseq, &enl, &er, node->nd_ensr);
+
+    ADD_LABEL(ret, lstart);
+    CHECK(COMPILE_(ret, "ensure head", node->nd_head, (popped | last_leave)));
+    ADD_LABEL(ret, lend);
+    ADD_SEQ(ret, ensr);
+    if (!popped && last_leave) ADD_INSN(ret, line, putnil);
+    ADD_LABEL(ret, lcont);
+    if (last_leave) ADD_INSN(ret, line, pop);
+
+    erange = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack->erange;
+    if (lstart->link.next != &lend->link) {
+	while (erange) {
+	    ADD_CATCH_ENTRY(CATCH_TYPE_ENSURE, erange->begin, erange->end,
+			    ensure, lcont);
+	    erange = erange->next;
 	}
-	else {
-	    COMPILE_ERROR((ERROR_ARGS "Invalid retry"));
+    }
+
+    ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enl.prev;
+    return COMPILE_OK;
+}
+
+static int
+compile_return(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    const int line = nd_line(node);
+
+    if (iseq) {
+	enum iseq_type type = iseq->body->type;
+	const rb_iseq_t *is = iseq;
+	enum iseq_type t = type;
+	const NODE *retval = node->nd_stts;
+	LABEL *splabel = 0;
+
+	while (t == ISEQ_TYPE_RESCUE || t == ISEQ_TYPE_ENSURE) {
+	    if (!(is = is->body->parent_iseq)) break;
+	    t = is->body->type;
 	}
-	break;
-      }
-      case NODE_BEGIN:{
-	COMPILE_(ret, "NODE_BEGIN", node->nd_body, poped);
-	break;
-      }
-      case NODE_RESCUE:{
-	LABEL *lstart = NEW_LABEL(nd_line(node));
-	LABEL *lend = NEW_LABEL(nd_line(node));
-	LABEL *lcont = NEW_LABEL(nd_line(node));
-	VALUE rescue = NEW_CHILD_ISEQVAL(
-	    node->nd_resq,
-	    rb_str_concat(rb_str_new2("rescue in "), iseq->name),
-	    ISEQ_TYPE_RESCUE);
-
-	ADD_LABEL(ret, lstart);
-	COMPILE(ret, "rescue head", node->nd_head);
-	ADD_LABEL(ret, lend);
-	if (node->nd_else) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	    COMPILE(ret, "rescue else", node->nd_else);
+	switch (t) {
+	  case ISEQ_TYPE_TOP:
+	  case ISEQ_TYPE_MAIN:
+            if (retval) {
+                rb_warn("argument of top-level return is ignored");
+            }
+	    if (is == iseq) {
+		/* plain top-level, leave directly */
+		type = ISEQ_TYPE_METHOD;
+	    }
+	    break;
+	  default:
+	    break;
 	}
-	ADD_INSN(ret, nd_line(node), nop);
-	ADD_LABEL(ret, lcont);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (type == ISEQ_TYPE_METHOD) {
+	    splabel = NEW_LABEL(0);
+	    ADD_LABEL(ret, splabel);
+	    ADD_ADJUST(ret, line, 0);
 	}
 
-	/* resgister catch entry */
-	ADD_CATCH_ENTRY(CATCH_TYPE_RESCUE, lstart, lend, rescue, lcont);
-	ADD_CATCH_ENTRY(CATCH_TYPE_RETRY, lend, lcont, 0, lstart);
-	break;
-      }
-      case NODE_RESBODY:{
-	NODE *resq = node;
-	NODE *narg;
-	LABEL *label_miss, *label_hit;
-
-	while (resq) {
-	    label_miss = NEW_LABEL(nd_line(node));
-	    label_hit = NEW_LABEL(nd_line(node));
-
-	    narg = resq->nd_args;
-	    if (narg) {
-		switch (nd_type(narg)) {
-		  case NODE_ARRAY:
-		    while (narg) {
-			COMPILE(ret, "rescue arg", narg->nd_head);
-			ADD_INSN2(ret, nd_line(node), getdynamic, INT2FIX(2), INT2FIX(0));
-			ADD_SEND(ret, nd_line(node), ID2SYM(idEqq), INT2FIX(1));
-			ADD_INSNL(ret, nd_line(node), branchif, label_hit);
-			narg = narg->nd_next;
-		    }
-		    break;
-		  case NODE_SPLAT:
-		  case NODE_ARGSCAT:
-		  case NODE_ARGSPUSH:
-		    ADD_INSN2(ret, nd_line(node), getdynamic, INT2FIX(2), INT2FIX(0));
-		    COMPILE(ret, "rescue/cond splat", narg);
-		    ADD_INSN1(ret, nd_line(node), checkincludearray, Qtrue);
-		    ADD_INSN(ret, nd_line(node), swap);
-		    ADD_INSN(ret, nd_line(node), pop);
-		    ADD_INSNL(ret, nd_line(node), branchif, label_hit);
-		    break;
-		  default:
-		    rb_bug("NODE_RESBODY: unknown node (%s)",
-			   ruby_node_name(nd_type(narg)));
-		}
+	CHECK(COMPILE(ret, "return nd_stts (return val)", retval));
+
+	if (type == ISEQ_TYPE_METHOD) {
+	    add_ensure_iseq(ret, iseq, 1);
+	    ADD_TRACE(ret, RUBY_EVENT_RETURN);
+	    ADD_INSN(ret, line, leave);
+	    ADD_ADJUST_RESTORE(ret, splabel);
+
+	    if (!popped) {
+		ADD_INSN(ret, line, putnil);
 	    }
-	    else {
-		ADD_INSN1(ret, nd_line(node), putobject,
-			  rb_eStandardError);
-		ADD_INSN2(ret, nd_line(node), getdynamic, INT2FIX(2), INT2FIX(0));
-		ADD_SEND(ret, nd_line(node), ID2SYM(idEqq), INT2FIX(1));
-		ADD_INSNL(ret, nd_line(node), branchif, label_hit);
-	    }
-	    ADD_INSNL(ret, nd_line(node), jump, label_miss);
-	    ADD_LABEL(ret, label_hit);
-	    COMPILE(ret, "resbody body", resq->nd_body);
-	    if (iseq->compile_data->option->tailcall_optimization) {
-		ADD_INSN(ret, nd_line(node), nop);
-	    }
-	    ADD_INSN(ret, nd_line(node), leave);
-	    ADD_LABEL(ret, label_miss);
-	    resq = resq->nd_head;
-	}
-	break;
-      }
-      case NODE_ENSURE:{
-	DECL_ANCHOR(ensr);
-	VALUE ensure = NEW_CHILD_ISEQVAL(node->nd_ensr,
-					 rb_str_concat(rb_str_new2
-						       ("ensure in "),
-						       iseq->name),
-					 ISEQ_TYPE_ENSURE);
-	LABEL *lstart = NEW_LABEL(nd_line(node));
-	LABEL *lend = NEW_LABEL(nd_line(node));
-	LABEL *lcont = NEW_LABEL(nd_line(node));
-	struct ensure_range er;
-	struct iseq_compile_data_ensure_node_stack enl;
-	struct ensure_range *erange;
-
-	INIT_ANCHOR(ensr);
-	COMPILE_POPED(ensr, "ensure ensr", node->nd_ensr);
-
-	er.begin = lstart;
-	er.end = lend;
-	er.next = 0;
-	push_ensure_entry(iseq, &enl, &er, node->nd_ensr);
-
-	ADD_LABEL(ret, lstart);
-	COMPILE_(ret, "ensure head", node->nd_head, poped);
-	ADD_LABEL(ret, lend);
-	if (ensr->anchor.next == 0) {
-	    ADD_INSN(ret, nd_line(node), nop);
 	}
 	else {
-	    ADD_SEQ(ret, ensr);
+	    ADD_INSN1(ret, line, throw, INT2FIX(TAG_RETURN));
+	    if (popped) {
+		ADD_INSN(ret, line, pop);
+	    }
 	}
-	ADD_LABEL(ret, lcont);
+    }
+    return COMPILE_OK;
+}
 
-	erange = iseq->compile_data->ensure_node_stack->erange;
-	while (erange) {
-	    ADD_CATCH_ENTRY(CATCH_TYPE_ENSURE, erange->begin, erange->end,
-			    ensure, lcont);
-	    erange = erange->next;
+static int
+compile_evstr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
+{
+    CHECK(COMPILE_(ret, "nd_body", node, popped));
+
+    if (!popped && !all_string_result_p(node)) {
+	const int line = nd_line(node);
+	const unsigned int flag = VM_CALL_FCALL;
+	LABEL *isstr = NEW_LABEL(line);
+	ADD_INSN(ret, line, dup);
+	ADD_INSN1(ret, line, checktype, INT2FIX(T_STRING));
+	ADD_INSNL(ret, line, branchif, isstr);
+	ADD_INSN(ret, line, dup);
+	ADD_SEND_R(ret, line, idTo_s, INT2FIX(0), NULL, INT2FIX(flag), NULL);
+	ADD_INSN(ret, line, tostring);
+	ADD_LABEL(ret, isstr);
+    }
+    return COMPILE_OK;
+}
+
+static LABEL *
+qcall_branch_start(rb_iseq_t *iseq, LINK_ANCHOR *const recv, VALUE *branches, const NODE *node, int line)
+{
+    LABEL *else_label = NEW_LABEL(line);
+    VALUE br = 0;
+
+    br = decl_branch_base(iseq, node, "&.");
+    *branches = br;
+    ADD_INSN(recv, line, dup);
+    ADD_INSNL(recv, line, branchnil, else_label);
+    add_trace_branch_coverage(iseq, recv, node, 0, "then", br);
+    return else_label;
+}
+
+static void
+qcall_branch_end(rb_iseq_t *iseq, LINK_ANCHOR *const ret, LABEL *else_label, VALUE branches, const NODE *node, int line)
+{
+    LABEL *end_label;
+    if (!else_label) return;
+    end_label = NEW_LABEL(line);
+    ADD_INSNL(ret, line, jump, end_label);
+    ADD_LABEL(ret, else_label);
+    add_trace_branch_coverage(iseq, ret, node, 1, "else", branches);
+    ADD_LABEL(ret, end_label);
+}
+
+static int
+compile_call_precheck_freeze(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int line, int popped)
+{
+    /* optimization shortcut
+     *   "literal".freeze -> opt_str_freeze("literal")
+     */
+    if (node->nd_recv && nd_type(node->nd_recv) == NODE_STR &&
+        (node->nd_mid == idFreeze || node->nd_mid == idUMinus) &&
+        node->nd_args == NULL &&
+        ISEQ_COMPILE_DATA(iseq)->current_block == NULL &&
+        ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction) {
+        VALUE str = rb_fstring(node->nd_recv->nd_lit);
+        if (node->nd_mid == idUMinus) {
+            ADD_INSN2(ret, line, opt_str_uminus, str,
+                      new_callinfo(iseq, idUMinus, 0, 0, NULL, FALSE));
+        }
+        else {
+            ADD_INSN2(ret, line, opt_str_freeze, str,
+                      new_callinfo(iseq, idFreeze, 0, 0, NULL, FALSE));
+        }
+        RB_OBJ_WRITTEN(iseq, Qundef, str);
+        if (popped) {
+            ADD_INSN(ret, line, pop);
+        }
+        return TRUE;
+    }
+    /* optimization shortcut
+     *   obj["literal"] -> opt_aref_with(obj, "literal")
+     */
+    if (node->nd_mid == idAREF && !private_recv_p(node) && node->nd_args &&
+        nd_type(node->nd_args) == NODE_LIST && node->nd_args->nd_alen == 1 &&
+        nd_type(node->nd_args->nd_head) == NODE_STR &&
+        ISEQ_COMPILE_DATA(iseq)->current_block == NULL &&
+        !ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal &&
+        ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction) {
+        VALUE str = rb_fstring(node->nd_args->nd_head->nd_lit);
+        CHECK(COMPILE(ret, "recv", node->nd_recv));
+        ADD_INSN2(ret, line, opt_aref_with, str,
+                  new_callinfo(iseq, idAREF, 1, 0, NULL, FALSE));
+        RB_OBJ_WRITTEN(iseq, Qundef, str);
+        if (popped) {
+            ADD_INSN(ret, line, pop);
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
+static int
+iseq_has_builtin_function_table(const rb_iseq_t *iseq)
+{
+    return ISEQ_COMPILE_DATA(iseq)->builtin_function_table != NULL;
+}
+
+static const struct rb_builtin_function *
+iseq_builtin_function_lookup(const rb_iseq_t *iseq, const char *name)
+{
+    int i;
+    const struct rb_builtin_function *table = ISEQ_COMPILE_DATA(iseq)->builtin_function_table;
+    for (i=0; table[i].index != -1; i++) {
+        if (strcmp(table[i].name, name) == 0) {
+            return &table[i];
+        }
+    }
+    return NULL;
+}
+
+static const char *
+iseq_builtin_function_name(const enum node_type type, const NODE *recv, ID mid)
+{
+    const char *name = rb_id2name(mid);
+    static const char prefix[] = "__builtin_";
+    const size_t prefix_len = sizeof(prefix) - 1;
+
+    switch (type) {
+      case NODE_CALL:
+        if (recv) {
+            switch (nd_type(recv)) {
+              case NODE_VCALL:
+                if (recv->nd_mid == rb_intern("__builtin")) {
+                    return name;
+                }
+                break;
+              case NODE_CONST:
+                if (recv->nd_vid == rb_intern("Primitive")) {
+                    return name;
+                }
+                break;
+              default: break;
+            }
+        }
+        break;
+      case NODE_VCALL:
+      case NODE_FCALL:
+        if (UNLIKELY(strncmp(prefix, name, prefix_len) == 0)) {
+            return &name[prefix_len];
+        }
+        break;
+      default: break;
+    }
+    return NULL;
+}
+
+static int
+delegate_call_p(const rb_iseq_t *iseq, unsigned int argc, const LINK_ANCHOR *args, unsigned int *pstart_index)
+{
+
+    if (argc == 0) {
+        *pstart_index = 0;
+        return TRUE;
+    }
+    else if (argc <= iseq->body->local_table_size) {
+        unsigned int start=0;
+
+        // local_table: [p1, p2, p3, l1, l2, l3]
+        // arguments:           [p3, l1, l2]     -> 2
+        for (start = 0;
+             argc + start <= iseq->body->local_table_size;
+             start++) {
+            const LINK_ELEMENT *elem = FIRST_ELEMENT(args);
+
+            for (unsigned int i=start; i-start<argc; i++) {
+                if (elem->type == ISEQ_ELEMENT_INSN &&
+                    INSN_OF(elem) == BIN(getlocal)) {
+                    int local_index = FIX2INT(OPERAND_AT(elem, 0));
+                    int local_level = FIX2INT(OPERAND_AT(elem, 1));
+
+                    if (local_level == 0) {
+                        unsigned int index = iseq->body->local_table_size - (local_index - VM_ENV_DATA_SIZE + 1);
+                        if (0) { // for debug
+                            fprintf(stderr, "lvar:%s (%d), id:%s (%d) local_index:%d, local_size:%d\n",
+                                    rb_id2name(iseq->body->local_table[i]),     i,
+                                    rb_id2name(iseq->body->local_table[index]), index,
+                                    local_index, (int)iseq->body->local_table_size);
+                        }
+                        if (i == index) {
+                            elem = elem->next;
+                            continue; /* for */
+                        }
+                        else {
+                            goto next;
+                        }
+                    }
+                    else {
+                        goto fail; // level != 0 is unsupported
+                    }
+                }
+                else {
+                    goto fail; // insn is not a getlocal
+                }
+            }
+            goto success;
+          next:;
+        }
+      fail:
+        return FALSE;
+      success:
+        *pstart_index = start;
+        return TRUE;
+    }
+    else {
+        return FALSE;
+    }
+}
+
+static int
+compile_builtin_function_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int line, int popped,
+                              const rb_iseq_t *parent_block, LINK_ANCHOR *args, const char *builtin_func)
+{
+    NODE *args_node = node->nd_args;
+
+    if (parent_block != NULL) {
+        COMPILE_ERROR(iseq, line, "should not call builtins here.");
+        return COMPILE_NG;
+    }
+    else {
+# define BUILTIN_INLINE_PREFIX "_bi"
+        char inline_func[DECIMAL_SIZE_OF_BITS(sizeof(int) * CHAR_BIT) + sizeof(BUILTIN_INLINE_PREFIX)];
+        bool cconst = false;
+      retry:;
+        const struct rb_builtin_function *bf = iseq_builtin_function_lookup(iseq, builtin_func);
+
+        if (bf == NULL) {
+            if (strcmp("cstmt!", builtin_func) == 0 ||
+                strcmp("cexpr!", builtin_func) == 0) {
+                // ok
+            }
+            else if (strcmp("cconst!", builtin_func) == 0) {
+                cconst = true;
+            }
+            else if (strcmp("cinit!", builtin_func) == 0) {
+                // ignore
+                GET_VM()->builtin_inline_index++;
+                return COMPILE_OK;
+            }
+            else if (strcmp("attr!", builtin_func) == 0) {
+                // There's only "inline" attribute for now
+                iseq->body->builtin_inline_p = true;
+                return COMPILE_OK;
+            }
+            else if (1) {
+                rb_bug("can't find builtin function:%s", builtin_func);
+            }
+            else {
+                COMPILE_ERROR(ERROR_ARGS "can't find builtin function:%s", builtin_func);
+                return COMPILE_NG;
+            }
+
+            if (GET_VM()->builtin_inline_index == INT_MAX) {
+                rb_bug("builtin inline function index overflow:%s", builtin_func);
+            }
+            int inline_index = GET_VM()->builtin_inline_index++;
+            snprintf(inline_func, sizeof(inline_func), BUILTIN_INLINE_PREFIX "%d", inline_index);
+            builtin_func = inline_func;
+            args_node = NULL;
+            goto retry;
+        }
+
+        if (cconst) {
+            typedef VALUE(*builtin_func0)(void *, VALUE);
+            VALUE const_val = (*(builtin_func0)bf->func_ptr)(NULL, Qnil);
+            ADD_INSN1(ret, line, putobject, const_val);
+            return COMPILE_OK;
+        }
+
+        // fprintf(stderr, "func_name:%s -> %p\n", builtin_func, bf->func_ptr);
+
+        unsigned int flag = 0;
+        struct rb_callinfo_kwarg *keywords = NULL;
+        VALUE argc = setup_args(iseq, args, args_node, &flag, &keywords);
+
+        if (FIX2INT(argc) != bf->argc) {
+            COMPILE_ERROR(ERROR_ARGS "argc is not match for builtin function:%s (expect %d but %d)",
+                          builtin_func, bf->argc, FIX2INT(argc));
+            return COMPILE_NG;
+        }
+
+        unsigned int start_index;
+        if (delegate_call_p(iseq, FIX2INT(argc), args, &start_index)) {
+            ADD_INSN2(ret, line, opt_invokebuiltin_delegate, bf, INT2FIX(start_index));
+        }
+        else {
+            ADD_SEQ(ret, args);
+            ADD_INSN1(ret,line, invokebuiltin, bf);
+        }
+
+        if (popped) ADD_INSN(ret, line, pop);
+        return COMPILE_OK;
+    }
+}
+
+static int
+compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, const enum node_type type, int line, int popped)
+{
+    /* call:  obj.method(...)
+     * fcall: func(...)
+     * vcall: func
+     */
+    DECL_ANCHOR(recv);
+    DECL_ANCHOR(args);
+    ID mid = node->nd_mid;
+    VALUE argc;
+    unsigned int flag = 0;
+    struct rb_callinfo_kwarg *keywords = NULL;
+    const rb_iseq_t *parent_block = ISEQ_COMPILE_DATA(iseq)->current_block;
+    LABEL *else_label = NULL;
+    VALUE branches = Qfalse;
+
+    ISEQ_COMPILE_DATA(iseq)->current_block = NULL;
+
+    INIT_ANCHOR(recv);
+    INIT_ANCHOR(args);
+#if OPT_SUPPORT_JOKE
+    if (nd_type(node) == NODE_VCALL) {
+        ID id_bitblt;
+        ID id_answer;
+
+        CONST_ID(id_bitblt, "bitblt");
+        CONST_ID(id_answer, "the_answer_to_life_the_universe_and_everything");
+
+        if (mid == id_bitblt) {
+            ADD_INSN(ret, line, bitblt);
+            return COMPILE_OK;
+        }
+        else if (mid == id_answer) {
+            ADD_INSN(ret, line, answer);
+            return COMPILE_OK;
+        }
+    }
+    /* only joke */
+    {
+        ID goto_id;
+        ID label_id;
+
+        CONST_ID(goto_id, "__goto__");
+        CONST_ID(label_id, "__label__");
+
+        if (nd_type(node) == NODE_FCALL &&
+            (mid == goto_id || mid == label_id)) {
+            LABEL *label;
+            st_data_t data;
+            st_table *labels_table = ISEQ_COMPILE_DATA(iseq)->labels_table;
+            VALUE label_name;
+
+            if (!labels_table) {
+                labels_table = st_init_numtable();
+                ISEQ_COMPILE_DATA(iseq)->labels_table = labels_table;
+            }
+            if (nd_type(node->nd_args->nd_head) == NODE_LIT &&
+                SYMBOL_P(node->nd_args->nd_head->nd_lit)) {
+
+                label_name = node->nd_args->nd_head->nd_lit;
+                if (!st_lookup(labels_table, (st_data_t)label_name, &data)) {
+                    label = NEW_LABEL(line);
+                    label->position = line;
+                    st_insert(labels_table, (st_data_t)label_name, (st_data_t)label);
+                }
+                else {
+                    label = (LABEL *)data;
+                }
+            }
+            else {
+                COMPILE_ERROR(ERROR_ARGS "invalid goto/label format");
+                return COMPILE_NG;
+            }
+
+            if (mid == goto_id) {
+                ADD_INSNL(ret, line, jump, label);
+            }
+            else {
+                ADD_LABEL(ret, label);
+            }
+            return COMPILE_OK;
+        }
+    }
+#endif
+
+    const char *builtin_func;
+    if (UNLIKELY(iseq_has_builtin_function_table(iseq)) &&
+        (builtin_func = iseq_builtin_function_name(type, node->nd_recv, mid)) != NULL) {
+        return compile_builtin_function_call(iseq, ret, node, line, popped, parent_block, args, builtin_func);
+    }
+
+    /* receiver */
+    if (type == NODE_CALL || type == NODE_OPCALL || type == NODE_QCALL) {
+        int idx, level;
+
+        if (mid == idCall &&
+            nd_type(node->nd_recv) == NODE_LVAR &&
+            iseq_block_param_id_p(iseq, node->nd_recv->nd_vid, &idx, &level)) {
+            ADD_INSN2(recv, nd_line(node->nd_recv), getblockparamproxy, INT2FIX(idx + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
+        }
+        else if (private_recv_p(node)) {
+            ADD_INSN(recv, nd_line(node), putself);
+            flag |= VM_CALL_FCALL;
+        }
+        else {
+            CHECK(COMPILE(recv, "recv", node->nd_recv));
+        }
+
+        if (type == NODE_QCALL) {
+            else_label = qcall_branch_start(iseq, recv, &branches, node, line);
+        }
+    }
+    else if (type == NODE_FCALL || type == NODE_VCALL) {
+        ADD_CALL_RECEIVER(recv, line);
+    }
+
+    /* args */
+    if (type != NODE_VCALL) {
+        argc = setup_args(iseq, args, node->nd_args, &flag, &keywords);
+        CHECK(!NIL_P(argc));
+    }
+    else {
+        argc = INT2FIX(0);
+    }
+
+    ADD_SEQ(ret, recv);
+    ADD_SEQ(ret, args);
+
+    debugp_param("call args argc", argc);
+    debugp_param("call method", ID2SYM(mid));
+
+    switch ((int)type) {
+      case NODE_VCALL:
+        flag |= VM_CALL_VCALL;
+        /* VCALL is funcall, so fall through */
+      case NODE_FCALL:
+        flag |= VM_CALL_FCALL;
+    }
+
+    ADD_SEND_R(ret, line, mid, argc, parent_block, INT2FIX(flag), keywords);
+
+    qcall_branch_end(iseq, ret, else_label, branches, node, line);
+    if (popped) {
+        ADD_INSN(ret, line, pop);
+    }
+    return COMPILE_OK;
+}
+
+
+static int iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped);
+/**
+  compile each node
+
+  self:  InstructionSequence
+  node:  Ruby compiled node
+  popped: This node will be popped
+ */
+static int
+iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE *node, int popped)
+{
+    if (node == 0) {
+        if (!popped) {
+            int lineno = ISEQ_COMPILE_DATA(iseq)->last_line;
+            if (lineno == 0) lineno = FIX2INT(rb_iseq_first_lineno(iseq));
+            debugs("node: NODE_NIL(implicit)\n");
+            ADD_INSN(ret, lineno, putnil);
+        }
+        return COMPILE_OK;
+    }
+    return iseq_compile_each0(iseq, ret, node, popped);
+}
+
+static int
+check_yield_place(const rb_iseq_t *iseq)
+{
+    switch (iseq->body->local_iseq->body->type) {
+      case ISEQ_TYPE_TOP:
+      case ISEQ_TYPE_MAIN:
+      case ISEQ_TYPE_CLASS:
+        return FALSE;
+      default:
+        return TRUE;
+    }
+}
+
+static int
+iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped)
+{
+    const int line = (int)nd_line(node);
+    const enum node_type type = nd_type(node);
+    struct rb_iseq_constant_body *const body = iseq->body;
+
+    if (ISEQ_COMPILE_DATA(iseq)->last_line == line) {
+	/* ignore */
+    }
+    else {
+	if (node->flags & NODE_FL_NEWLINE) {
+	    int event = RUBY_EVENT_LINE;
+	    ISEQ_COMPILE_DATA(iseq)->last_line = line;
+	    if (ISEQ_COVERAGE(iseq) && ISEQ_LINE_COVERAGE(iseq)) {
+		event |= RUBY_EVENT_COVERAGE_LINE;
+	    }
+	    ADD_TRACE(ret, event);
 	}
+    }
 
-	iseq->compile_data->ensure_node_stack = enl.prev;
+    debug_node_start(node);
+#undef BEFORE_RETURN
+#define BEFORE_RETURN debug_node_end()
+
+    switch (type) {
+      case NODE_BLOCK:{
+	while (node && nd_type(node) == NODE_BLOCK) {
+	    CHECK(COMPILE_(ret, "BLOCK body", node->nd_head,
+			   (node->nd_next ? 1 : popped)));
+	    node = node->nd_next;
+	}
+	if (node) {
+	    CHECK(COMPILE_(ret, "BLOCK next", node->nd_next, popped));
+	}
+	break;
+      }
+      case NODE_IF:
+      case NODE_UNLESS:
+	CHECK(compile_if(iseq, ret, node, popped, type));
+	break;
+      case NODE_CASE:
+	CHECK(compile_case(iseq, ret, node, popped));
+	break;
+      case NODE_CASE2:
+	CHECK(compile_case2(iseq, ret, node, popped));
+	break;
+      case NODE_CASE3:
+        CHECK(compile_case3(iseq, ret, node, popped));
+        break;
+      case NODE_WHILE:
+      case NODE_UNTIL:
+	CHECK(compile_loop(iseq, ret, node, popped, type));
+	break;
+      case NODE_FOR:
+      case NODE_ITER:
+	CHECK(compile_iter(iseq, ret, node, popped));
+	break;
+      case NODE_FOR_MASGN:
+	CHECK(compile_for_masgn(iseq, ret, node, popped));
+	break;
+      case NODE_BREAK:
+	CHECK(compile_break(iseq, ret, node, popped));
+	break;
+      case NODE_NEXT:
+	CHECK(compile_next(iseq, ret, node, popped));
+	break;
+      case NODE_REDO:
+	CHECK(compile_redo(iseq, ret, node, popped));
+	break;
+      case NODE_RETRY:
+	CHECK(compile_retry(iseq, ret, node, popped));
+	break;
+      case NODE_BEGIN:{
+	CHECK(COMPILE_(ret, "NODE_BEGIN", node->nd_body, popped));
 	break;
       }
+      case NODE_RESCUE:
+	CHECK(compile_rescue(iseq, ret, node, popped));
+	break;
+      case NODE_RESBODY:
+	CHECK(compile_resbody(iseq, ret, node, popped));
+	break;
+      case NODE_ENSURE:
+	CHECK(compile_ensure(iseq, ret, node, popped));
+	break;
 
       case NODE_AND:
       case NODE_OR:{
-	LABEL *end_label = NEW_LABEL(nd_line(node));
-	COMPILE(ret, "nd_1st", node->nd_1st);
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), dup);
+	LABEL *end_label = NEW_LABEL(line);
+	CHECK(COMPILE(ret, "nd_1st", node->nd_1st));
+	if (!popped) {
+	    ADD_INSN(ret, line, dup);
 	}
 	if (type == NODE_AND) {
-	    ADD_INSNL(ret, nd_line(node), branchunless, end_label);
+	    ADD_INSNL(ret, line, branchunless, end_label);
 	}
 	else {
-	    ADD_INSNL(ret, nd_line(node), branchif, end_label);
+	    ADD_INSNL(ret, line, branchif, end_label);
 	}
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (!popped) {
+	    ADD_INSN(ret, line, pop);
 	}
-	COMPILE_(ret, "nd_2nd", node->nd_2nd, poped);
+	CHECK(COMPILE_(ret, "nd_2nd", node->nd_2nd, popped));
 	ADD_LABEL(ret, end_label);
 	break;
       }
 
       case NODE_MASGN:{
-	compile_massign(iseq, ret, node, poped);
+	compile_massign(iseq, ret, node, popped);
 	break;
       }
 
       case NODE_LASGN:{
 	ID id = node->nd_vid;
-	int idx = iseq->local_iseq->local_size - get_local_var_idx(iseq, id);
+	int idx = body->local_iseq->body->local_table_size - get_local_var_idx(iseq, id);
 
 	debugs("lvar: %s idx: %d\n", rb_id2name(id), idx);
-	COMPILE(ret, "rvalue", node->nd_value);
+	CHECK(COMPILE(ret, "rvalue", node->nd_value));
 
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), dup);
+	if (!popped) {
+	    ADD_INSN(ret, line, dup);
 	}
-	ADD_INSN1(ret, nd_line(node), setlocal, INT2FIX(idx));
-
+	ADD_SETLOCAL(ret, line, idx, get_lvar_level(iseq));
 	break;
       }
       case NODE_DASGN:
       case NODE_DASGN_CURR:{
 	int idx, lv, ls;
-	COMPILE(ret, "dvalue", node->nd_value);
-	debugp_param("dassn id", rb_str_new2(rb_id2name(node->nd_vid) ? rb_id2name(node->nd_vid) : "*"));
+	ID id = node->nd_vid;
+	CHECK(COMPILE(ret, "dvalue", node->nd_value));
+	debugi("dassn id", rb_id2str(id) ? id : '*');
 
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), dup);
+	if (!popped) {
+	    ADD_INSN(ret, line, dup);
 	}
 
-	idx = get_dyna_var_idx(iseq, node->nd_vid, &lv, &ls);
+	idx = get_dyna_var_idx(iseq, id, &lv, &ls);
 
 	if (idx < 0) {
-	    rb_bug("NODE_DASGN(_CURR): unknown id (%s)", rb_id2name(node->nd_vid));
+	    COMPILE_ERROR(ERROR_ARGS "NODE_DASGN(_CURR): unknown id (%"PRIsVALUE")",
+			  rb_id2str(id));
+	    goto ng;
 	}
-
-	ADD_INSN2(ret, nd_line(node), setdynamic,
-		  INT2FIX(ls - idx), INT2FIX(lv));
+	ADD_SETLOCAL(ret, line, ls - idx, lv);
 	break;
       }
       case NODE_GASGN:{
-	COMPILE(ret, "lvalue", node->nd_value);
+	CHECK(COMPILE(ret, "lvalue", node->nd_value));
 
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), dup);
+	if (!popped) {
+	    ADD_INSN(ret, line, dup);
 	}
-	ADD_INSN1(ret, nd_line(node), setglobal,
-		  (((long)node->nd_entry) | 1));
+	ADD_INSN1(ret, line, setglobal, ID2SYM(node->nd_entry));
 	break;
       }
-      case NODE_IASGN:
-      case NODE_IASGN2:{
-	COMPILE(ret, "lvalue", node->nd_value);
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), dup);
-	}
-	ADD_INSN1(ret, nd_line(node), setinstancevariable,
-		  ID2SYM(node->nd_vid));
+      case NODE_IASGN:{
+	CHECK(COMPILE(ret, "lvalue", node->nd_value));
+	if (!popped) {
+	    ADD_INSN(ret, line, dup);
+	}
+	ADD_INSN2(ret, line, setinstancevariable,
+		  ID2SYM(node->nd_vid),
+		  get_ivar_ic_value(iseq,node->nd_vid));
 	break;
       }
       case NODE_CDECL:{
-	COMPILE(ret, "lvalue", node->nd_value);
+        CHECK(COMPILE(ret, "lvalue", node->nd_value));
 
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), dup);
-	}
+        if (!popped) {
+            ADD_INSN(ret, line, dup);
+        }
 
 	if (node->nd_vid) {
-	    ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
-	    ADD_INSN1(ret, nd_line(node), setconstant, ID2SYM(node->nd_vid));
+	    ADD_INSN1(ret, line, putspecialobject,
+		      INT2FIX(VM_SPECIAL_OBJECT_CONST_BASE));
+            ADD_INSN1(ret, line, setconstant, ID2SYM(node->nd_vid));
 	}
 	else {
 	    compile_cpath(ret, iseq, node->nd_else);
-	    ADD_INSN1(ret, nd_line(node), setconstant, ID2SYM(node->nd_else->nd_mid));
+            ADD_INSN1(ret, line, setconstant, ID2SYM(node->nd_else->nd_mid));
 	}
 	break;
       }
       case NODE_CVASGN:{
-	COMPILE(ret, "cvasgn val", node->nd_value);
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), dup);
+	CHECK(COMPILE(ret, "cvasgn val", node->nd_value));
+	if (!popped) {
+	    ADD_INSN(ret, line, dup);
 	}
-	ADD_INSN1(ret, nd_line(node), setclassvariable,
+	ADD_INSN1(ret, line, setclassvariable,
 		  ID2SYM(node->nd_vid));
 	break;
       }
       case NODE_OP_ASGN1: {
-	DECL_ANCHOR(args);
 	VALUE argc;
-	unsigned long flag = 0;
+	unsigned int flag = 0;
+	int asgnflag = 0;
 	ID id = node->nd_mid;
+	int boff = 0;
 
 	/*
 	 * a[x] (op)= y
 	 *
-	 * eval a    # a
-	 * eval x    # a x
-	 * dupn 2    # a x a x
-	 * send :[]  # a x a[x]
-	 * eval y    # a x a[x] y
-	 * send op   # a x a[x]+y
-	 * send []=  # ret
+	 * nil       # nil
+	 * eval a    # nil a
+	 * eval x    # nil a x
+	 * dupn 2    # nil a x a x
+	 * send :[]  # nil a x a[x]
+	 * eval y    # nil a x a[x] y
+	 * send op   # nil a x ret
+	 * setn 3    # ret a x ret
+	 * send []=  # ret ?
+	 * pop       # ret
 	 */
 
 	/*
@@ -3755,21 +7758,28 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 	 *              nd_mid
 	 */
 
-	COMPILE(ret, "NODE_OP_ASGN1 recv", node->nd_recv);
-	if (nd_type(node->nd_args->nd_body) != NODE_ZARRAY) {
-	    INIT_ANCHOR(args);
-	    argc = setup_args(iseq, args, node->nd_args->nd_body, &flag);
-	    ADD_SEQ(ret, args);
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
 	}
-	else {
+	asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN1 recv", node);
+        CHECK(asgnflag != -1);
+	switch (nd_type(node->nd_args->nd_head)) {
+	  case NODE_ZLIST:
 	    argc = INT2FIX(0);
+	    break;
+	  case NODE_BLOCK_PASS:
+	    boff = 1;
+            /* fall through */
+	  default:
+	    argc = setup_args(iseq, ret, node->nd_args->nd_head, &flag, NULL);
+	    CHECK(!NIL_P(argc));
 	}
-	ADD_INSN1(ret, nd_line(node), dupn, INT2FIX(FIX2INT(argc)+1));
-	ADD_SEND_R(ret, nd_line(node), ID2SYM(idAREF), argc, Qfalse, LONG2FIX(flag));
+	ADD_INSN1(ret, line, dupn, FIXNUM_INC(argc, 1 + boff));
+        flag |= asgnflag;
+	ADD_SEND_WITH_FLAG(ret, line, idAREF, argc, INT2FIX(flag));
 
-	if (id == 0 || id == 1) {
-	    /* 0: or, 1: and
-	       a[x] ||= y
+	if (id == idOROP || id == idANDOP) {
+	    /* a[x] ||= y  or  a[x] &&= y
 
 	       unless/if a[x]
 	       a[x]= y
@@ -3777,68 +7787,89 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 	       nil
 	       end
 	    */
-	    LABEL *label = NEW_LABEL(nd_line(node));
-	    LABEL *lfin = NEW_LABEL(nd_line(node));
+	    LABEL *label = NEW_LABEL(line);
+	    LABEL *lfin = NEW_LABEL(line);
 
-	    if (id == 0) {
-		/* or */
-		ADD_INSN(ret, nd_line(node), dup);
-		ADD_INSNL(ret, nd_line(node), branchif, label);
-		ADD_INSN(ret, nd_line(node), pop);
+	    ADD_INSN(ret, line, dup);
+	    if (id == idOROP) {
+		ADD_INSNL(ret, line, branchif, label);
 	    }
-	    else {
-		/* and */
-		ADD_INSN(ret, nd_line(node), dup);
-		ADD_INSNL(ret, nd_line(node), branchunless, label);
-		ADD_INSN(ret, nd_line(node), pop);
+	    else { /* idANDOP */
+		ADD_INSNL(ret, line, branchunless, label);
 	    }
+	    ADD_INSN(ret, line, pop);
 
-	    COMPILE(ret, "NODE_OP_ASGN1 args->head: ", node->nd_args->nd_head);
-	    if (flag & VM_CALL_ARGS_SPLAT_BIT) {
-		ADD_INSN1(ret, nd_line(node), newarray, INT2FIX(1));
-		ADD_INSN(ret, nd_line(node), concatarray);
-		ADD_SEND_R(ret, nd_line(node), ID2SYM(idASET),
-			   argc, Qfalse, LONG2FIX(flag));
+	    CHECK(COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body));
+	    if (!popped) {
+		ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2+boff));
+	    }
+	    if (flag & VM_CALL_ARGS_SPLAT) {
+		ADD_INSN1(ret, line, newarray, INT2FIX(1));
+		if (boff > 0) {
+		    ADD_INSN1(ret, line, dupn, INT2FIX(3));
+		    ADD_INSN(ret, line, swap);
+		    ADD_INSN(ret, line, pop);
+		}
+		ADD_INSN(ret, line, concatarray);
+		if (boff > 0) {
+		    ADD_INSN1(ret, line, setn, INT2FIX(3));
+		    ADD_INSN(ret, line, pop);
+		    ADD_INSN(ret, line, pop);
+		}
+		ADD_SEND_WITH_FLAG(ret, line, idASET, argc, INT2FIX(flag));
 	    }
 	    else {
-		ADD_SEND_R(ret, nd_line(node), ID2SYM(idASET),
-			   INT2FIX(FIX2INT(argc) + 1), Qfalse, LONG2FIX(flag));
+		if (boff > 0)
+		    ADD_INSN(ret, line, swap);
+		ADD_SEND_WITH_FLAG(ret, line, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
 	    }
-	    ADD_INSNL(ret, nd_line(node), jump, lfin);
+	    ADD_INSN(ret, line, pop);
+	    ADD_INSNL(ret, line, jump, lfin);
 	    ADD_LABEL(ret, label);
-	    if (id == 0 || id == 1) {	/* 0: or, 1: and */
-		ADD_INSN(ret, nd_line(node), swap);
-		ADD_INSN(ret, nd_line(node), pop);
-		ADD_INSN(ret, nd_line(node), swap);
-		ADD_INSN(ret, nd_line(node), pop);
+	    if (!popped) {
+		ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2+boff));
 	    }
+	    ADD_INSN1(ret, line, adjuststack, FIXNUM_INC(argc, 2+boff));
 	    ADD_LABEL(ret, lfin);
 	}
 	else {
-	    COMPILE(ret, "NODE_OP_ASGN1 args->head: ", node->nd_args->nd_head);
-	    ADD_SEND(ret, nd_line(node), ID2SYM(id), INT2FIX(1));
-	    if (flag & VM_CALL_ARGS_SPLAT_BIT) {
-		ADD_INSN1(ret, nd_line(node), newarray, INT2FIX(1));
-		ADD_INSN(ret, nd_line(node), concatarray);
-		ADD_SEND_R(ret, nd_line(node), ID2SYM(idASET),
-			   argc, Qfalse, LONG2FIX(flag));
+	    CHECK(COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body));
+	    ADD_SEND(ret, line, id, INT2FIX(1));
+	    if (!popped) {
+		ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2+boff));
+	    }
+	    if (flag & VM_CALL_ARGS_SPLAT) {
+		ADD_INSN1(ret, line, newarray, INT2FIX(1));
+		if (boff > 0) {
+		    ADD_INSN1(ret, line, dupn, INT2FIX(3));
+		    ADD_INSN(ret, line, swap);
+		    ADD_INSN(ret, line, pop);
+		}
+		ADD_INSN(ret, line, concatarray);
+		if (boff > 0) {
+		    ADD_INSN1(ret, line, setn, INT2FIX(3));
+		    ADD_INSN(ret, line, pop);
+		    ADD_INSN(ret, line, pop);
+		}
+		ADD_SEND_WITH_FLAG(ret, line, idASET, argc, INT2FIX(flag));
 	    }
 	    else {
-		ADD_SEND_R(ret, nd_line(node), ID2SYM(idASET),
-			   INT2FIX(FIX2INT(argc) + 1), Qfalse, LONG2FIX(flag));
+		if (boff > 0)
+		    ADD_INSN(ret, line, swap);
+		ADD_SEND_WITH_FLAG(ret, line, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
 	    }
-	}
-
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	    ADD_INSN(ret, line, pop);
 	}
 
 	break;
       }
       case NODE_OP_ASGN2:{
 	ID atype = node->nd_next->nd_mid;
-	LABEL *lfin = NEW_LABEL(nd_line(node));
-	LABEL *lcfin = NEW_LABEL(nd_line(node));
+	ID vid = node->nd_next->nd_vid, aid = rb_id_attrset(vid);
+        int asgnflag;
+	LABEL *lfin = NEW_LABEL(line);
+	LABEL *lcfin = NEW_LABEL(line);
+	LABEL *lskip = 0;
 	/*
 	  class C; attr_accessor :c; end
 	  r = C.new
@@ -3853,22 +7884,26 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 	  if lcfin  # r o
 	  pop       # r
 	  eval v    # r v
-	  send a=   # v
-	  jump lfin # v
+	  swap      # v r
+	  topn 1    # v r v
+	  send a=   # v ?
+	  jump lfin # v ?
 
 	  lcfin:      # r o
 	  swap      # o r
-	  pop       # o
 
-	  lfin:       # v
+	  lfin:       # o ?
+	  pop       # o
 
 	  # and
 	  dup       # r o o
 	  unless lcfin
 	  pop       # r
 	  eval v    # r v
-	  send a=   # v
-	  jump lfin # v
+	  swap      # v r
+	  topn 1    # v r v
+	  send a=   # v ?
+	  jump lfin # v ?
 
 	  # others
 	  eval v    # r o v
@@ -3877,468 +7912,461 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 
 	*/
 
-	COMPILE(ret, "NODE_OP_ASGN2#recv", node->nd_recv);
-	ADD_INSN(ret, nd_line(node), dup);
-	ADD_SEND(ret, nd_line(node), ID2SYM(node->nd_next->nd_vid),
-		 INT2FIX(0));
+	asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN2#recv", node);
+        CHECK(asgnflag != -1);
+	if (node->nd_next->nd_aid) {
+	    lskip = NEW_LABEL(line);
+	    ADD_INSN(ret, line, dup);
+	    ADD_INSNL(ret, line, branchnil, lskip);
+	}
+	ADD_INSN(ret, line, dup);
+        ADD_SEND_WITH_FLAG(ret, line, vid, INT2FIX(0), INT2FIX(asgnflag));
 
-	if (atype == 0 || atype == 1) {	/* 0: OR or 1: AND */
-	    ADD_INSN(ret, nd_line(node), dup);
-	    if (atype == 0) {
-		ADD_INSNL(ret, nd_line(node), branchif, lcfin);
+	if (atype == idOROP || atype == idANDOP) {
+	    ADD_INSN(ret, line, dup);
+	    if (atype == idOROP) {
+		ADD_INSNL(ret, line, branchif, lcfin);
 	    }
-	    else {
-		ADD_INSNL(ret, nd_line(node), branchunless, lcfin);
+	    else { /* idANDOP */
+		ADD_INSNL(ret, line, branchunless, lcfin);
 	    }
-	    ADD_INSN(ret, nd_line(node), pop);
-	    COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value);
-	    ADD_SEND(ret, nd_line(node), ID2SYM(node->nd_next->nd_aid),
-		     INT2FIX(1));
-	    ADD_INSNL(ret, nd_line(node), jump, lfin);
+	    ADD_INSN(ret, line, pop);
+	    CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value));
+	    ADD_INSN(ret, line, swap);
+	    ADD_INSN1(ret, line, topn, INT2FIX(1));
+	    ADD_SEND_WITH_FLAG(ret, line, aid, INT2FIX(1), INT2FIX(asgnflag));
+	    ADD_INSNL(ret, line, jump, lfin);
 
 	    ADD_LABEL(ret, lcfin);
-	    ADD_INSN(ret, nd_line(node), swap);
-	    ADD_INSN(ret, nd_line(node), pop);
+	    ADD_INSN(ret, line, swap);
 
 	    ADD_LABEL(ret, lfin);
+	    ADD_INSN(ret, line, pop);
+	    if (lskip) {
+		ADD_LABEL(ret, lskip);
+	    }
+	    if (popped) {
+		/* we can apply more optimize */
+		ADD_INSN(ret, line, pop);
+	    }
 	}
 	else {
-	    COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value);
-	    ADD_SEND(ret, nd_line(node), ID2SYM(node->nd_next->nd_mid),
-		     INT2FIX(1));
-	    ADD_SEND(ret, nd_line(node), ID2SYM(node->nd_next->nd_aid),
-		     INT2FIX(1));
+	    CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value));
+	    ADD_SEND(ret, line, atype, INT2FIX(1));
+	    if (!popped) {
+		ADD_INSN(ret, line, swap);
+		ADD_INSN1(ret, line, topn, INT2FIX(1));
+	    }
+	    ADD_SEND_WITH_FLAG(ret, line, aid, INT2FIX(1), INT2FIX(asgnflag));
+	    if (lskip && popped) {
+		ADD_LABEL(ret, lskip);
+	    }
+	    ADD_INSN(ret, line, pop);
+	    if (lskip && !popped) {
+		ADD_LABEL(ret, lskip);
+	    }
 	}
-
-	if (poped) {
-	    /* we can apply more optimize */
-	    ADD_INSN(ret, nd_line(node), pop);
+	break;
+      }
+      case NODE_OP_CDECL: {
+	LABEL *lfin = 0;
+	LABEL *lassign = 0;
+	ID mid;
+
+	switch (nd_type(node->nd_head)) {
+	  case NODE_COLON3:
+	    ADD_INSN1(ret, line, putobject, rb_cObject);
+	    break;
+	  case NODE_COLON2:
+	    CHECK(COMPILE(ret, "NODE_OP_CDECL/colon2#nd_head", node->nd_head->nd_head));
+	    break;
+	  default:
+	    COMPILE_ERROR(ERROR_ARGS "%s: invalid node in NODE_OP_CDECL",
+			  ruby_node_name(nd_type(node->nd_head)));
+	    goto ng;
+	}
+	mid = node->nd_head->nd_mid;
+	/* cref */
+	if (node->nd_aid == idOROP) {
+	    lassign = NEW_LABEL(line);
+	    ADD_INSN(ret, line, dup); /* cref cref */
+	    ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_CONST_FROM),
+		      ID2SYM(mid), Qfalse); /* cref bool */
+	    ADD_INSNL(ret, line, branchunless, lassign); /* cref */
+	}
+	ADD_INSN(ret, line, dup); /* cref cref */
+        ADD_INSN1(ret, line, putobject, Qtrue);
+        ADD_INSN1(ret, line, getconstant, ID2SYM(mid)); /* cref obj */
+
+	if (node->nd_aid == idOROP || node->nd_aid == idANDOP) {
+	    lfin = NEW_LABEL(line);
+	    if (!popped) ADD_INSN(ret, line, dup); /* cref [obj] obj */
+	    if (node->nd_aid == idOROP)
+		ADD_INSNL(ret, line, branchif, lfin);
+	    else /* idANDOP */
+		ADD_INSNL(ret, line, branchunless, lfin);
+	    /* cref [obj] */
+	    if (!popped) ADD_INSN(ret, line, pop); /* cref */
+	    if (lassign) ADD_LABEL(ret, lassign);
+	    CHECK(COMPILE(ret, "NODE_OP_CDECL#nd_value", node->nd_value));
+	    /* cref value */
+	    if (popped)
+		ADD_INSN1(ret, line, topn, INT2FIX(1)); /* cref value cref */
+	    else {
+		ADD_INSN1(ret, line, dupn, INT2FIX(2)); /* cref value cref value */
+		ADD_INSN(ret, line, swap); /* cref value value cref */
+	    }
+	    ADD_INSN1(ret, line, setconstant, ID2SYM(mid)); /* cref [value] */
+	    ADD_LABEL(ret, lfin);			    /* cref [value] */
+	    if (!popped) ADD_INSN(ret, line, swap); /* [value] cref */
+	    ADD_INSN(ret, line, pop); /* [value] */
+	}
+	else {
+	    CHECK(COMPILE(ret, "NODE_OP_CDECL#nd_value", node->nd_value));
+	    /* cref obj value */
+	    ADD_CALL(ret, line, node->nd_aid, INT2FIX(1));
+	    /* cref value */
+	    ADD_INSN(ret, line, swap); /* value cref */
+	    if (!popped) {
+		ADD_INSN1(ret, line, topn, INT2FIX(1)); /* value cref value */
+		ADD_INSN(ret, line, swap); /* value value cref */
+	    }
+	    ADD_INSN1(ret, line, setconstant, ID2SYM(mid));
 	}
 	break;
       }
       case NODE_OP_ASGN_AND:
       case NODE_OP_ASGN_OR:{
-	LABEL *lfin = NEW_LABEL(nd_line(node));
+	LABEL *lfin = NEW_LABEL(line);
 	LABEL *lassign;
 
-	if (nd_type(node) == NODE_OP_ASGN_OR) {
+	if (nd_type(node) == NODE_OP_ASGN_OR && nd_type(node->nd_head) != NODE_IVAR) {
 	    LABEL *lfinish[2];
 	    lfinish[0] = lfin;
 	    lfinish[1] = 0;
 	    defined_expr(iseq, ret, node->nd_head, lfinish, Qfalse);
 	    lassign = lfinish[1];
 	    if (!lassign) {
-		lassign = NEW_LABEL(nd_line(node));
+		lassign = NEW_LABEL(line);
 	    }
-	    ADD_INSNL(ret, nd_line(node), branchunless, lassign);
+	    ADD_INSNL(ret, line, branchunless, lassign);
 	}
 	else {
-	    lassign = NEW_LABEL(nd_line(node));
+	    lassign = NEW_LABEL(line);
 	}
 
-	COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_head", node->nd_head);
-	ADD_INSN(ret, nd_line(node), dup);
+	CHECK(COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_head", node->nd_head));
+	ADD_INSN(ret, line, dup);
 
 	if (nd_type(node) == NODE_OP_ASGN_AND) {
-	    ADD_INSNL(ret, nd_line(node), branchunless, lfin);
+	    ADD_INSNL(ret, line, branchunless, lfin);
 	}
 	else {
-	    ADD_INSNL(ret, nd_line(node), branchif, lfin);
+	    ADD_INSNL(ret, line, branchif, lfin);
 	}
 
-	ADD_INSN(ret, nd_line(node), pop);
+	ADD_INSN(ret, line, pop);
 	ADD_LABEL(ret, lassign);
-	COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_value", node->nd_value);
+	CHECK(COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_value", node->nd_value));
 	ADD_LABEL(ret, lfin);
 
-	if (poped) {
+	if (popped) {
 	    /* we can apply more optimize */
-	    ADD_INSN(ret, nd_line(node), pop);
-	}
-	break;
-      }
-      case NODE_CALL:
-      case NODE_FCALL:
-      case NODE_VCALL:{		/* VCALL: variable or call */
-	/*
-	  call:  obj.method(...)
-	  fcall: func(...)
-	  vcall: func
-	*/
-	DECL_ANCHOR(recv);
-	DECL_ANCHOR(args);
-	ID mid = node->nd_mid;
-	VALUE argc;
-	unsigned long flag = 0;
-	VALUE parent_block = iseq->compile_data->current_block;
-	iseq->compile_data->current_block = Qfalse;
-
-	INIT_ANCHOR(recv);
-	INIT_ANCHOR(args);
-#if SUPPORT_JOKE
-	if (nd_type(node) == NODE_VCALL) {
-	    if (mid == idBitblt) {
-		ADD_INSN(ret, nd_line(node), bitblt);
-		break;
-	    }
-	    else if (mid == idAnswer) {
-		ADD_INSN(ret, nd_line(node), answer);
-		break;
-	    }
-	}
-	/* only joke */
-	{
-	    ID goto_id;
-	    ID label_id;
-	    VALUE label;
-	    VALUE label_sym;
-
-	    
-	    CONST_ID(goto_id, "__goto__");
-	    CONST_ID(label_id, "__label__");
-
-	    if (nd_type(node) == NODE_FCALL &&
-		(mid == goto_id || mid == label_id)) {
-		if (nd_type(node->nd_args->nd_head) == NODE_LIT &&
-		    SYMBOL_P(node->nd_args->nd_head->nd_lit)) {
-
-		    label_sym = label = node->nd_args->nd_head->nd_lit;
-		    if ((label =
-			 rb_hash_aref(iseq->compile_data,
-				      label_sym)) == Qnil) {
-			rb_hash_aset(iseq->compile_data, label_sym,
-				     label = NEW_LABEL(nd_line(node)));
-		    }
-		}
-		else {
-		    rb_bug("invalid goto/label format");
-		}
-
-
-		if (mid == goto_id) {
-		    ADD_INSNL(ret, nd_line(node), jump, label);
-		}
-		else {
-		    ADD_LABEL(ret, label);
-		}
-		break;
-	    }
-	}
-#endif
-	/* reciever */
-	if (type == NODE_CALL) {
-	    COMPILE(recv, "recv", node->nd_recv);
-	}
-	else if (type == NODE_FCALL || type == NODE_VCALL) {
-	    ADD_CALL_RECEIVER(recv, nd_line(node));
-	}
-
-	/* args */
-	if (nd_type(node) != NODE_VCALL) {
-	    argc = setup_args(iseq, args, node->nd_args, &flag);
-	}
-	else {
-	    argc = INT2FIX(0);
-	}
-
-	ADD_SEQ(ret, recv);
-	ADD_SEQ(ret, args);
-
-	debugp_param("call args argc", argc);
-	debugp_param("call method", ID2SYM(mid));
-
-	switch (nd_type(node)) {
-	  case NODE_VCALL:
-	    flag |= VM_CALL_VCALL_BIT;
-	    /* VCALL is funcall, so fall through */
-	  case NODE_FCALL:
-	    flag |= VM_CALL_FCALL_BIT;
-	}
-
-	ADD_SEND_R(ret, nd_line(node), ID2SYM(mid),
-		   argc, parent_block, LONG2FIX(flag));
-
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
+      case NODE_CALL:   /* obj.foo */
+      case NODE_OPCALL: /* foo[] */
+        if (compile_call_precheck_freeze(iseq, ret, node, line, popped) == TRUE) {
+            break;
+        }
+      case NODE_QCALL: /* obj&.foo */
+      case NODE_FCALL: /* foo() */
+      case NODE_VCALL: /* foo (variable or call) */
+        if (compile_call(iseq, ret, node, type, line, popped) == COMPILE_NG) {
+            goto ng;
+        }
+        break;
       case NODE_SUPER:
       case NODE_ZSUPER:{
 	DECL_ANCHOR(args);
-	VALUE argc;
-	unsigned long flag = 0;
-	VALUE parent_block = iseq->compile_data->current_block;
+	int argc;
+	unsigned int flag = 0;
+	struct rb_callinfo_kwarg *keywords = NULL;
+	const rb_iseq_t *parent_block = ISEQ_COMPILE_DATA(iseq)->current_block;
 
 	INIT_ANCHOR(args);
-	iseq->compile_data->current_block = Qfalse;
-	if (nd_type(node) == NODE_SUPER) {
-	    argc = setup_args(iseq, args, node->nd_args, &flag);
+	ISEQ_COMPILE_DATA(iseq)->current_block = NULL;
+	if (type == NODE_SUPER) {
+	    VALUE vargc = setup_args(iseq, args, node->nd_args, &flag, &keywords);
+	    CHECK(!NIL_P(vargc));
+	    argc = FIX2INT(vargc);
 	}
 	else {
 	    /* NODE_ZSUPER */
 	    int i;
-	    rb_iseq_t *liseq = iseq->local_iseq;
+	    const rb_iseq_t *liseq = body->local_iseq;
+	    const struct rb_iseq_constant_body *const local_body = liseq->body;
+	    const struct rb_iseq_param_keyword *const local_kwd = local_body->param.keyword;
+	    int lvar_level = get_lvar_level(iseq);
 
-	    argc = INT2FIX(liseq->argc);
+	    argc = local_body->param.lead_num;
 
 	    /* normal arguments */
-	    for (i = 0; i < liseq->argc; i++) {
-		int idx = liseq->local_size - i;
-		ADD_INSN1(args, nd_line(node), getlocal, INT2FIX(idx));
+	    for (i = 0; i < local_body->param.lead_num; i++) {
+		int idx = local_body->local_table_size - i;
+		ADD_GETLOCAL(args, line, idx, lvar_level);
 	    }
 
-	    if (!liseq->arg_simple) {
-		if (liseq->arg_opts) {
-		    /* optional arguments */
-		    int j;
-		    for (j = 0; j < liseq->arg_opts - 1; j++) {
-			int idx = liseq->local_size - (i + j);
-			ADD_INSN1(args, nd_line(node), getlocal, INT2FIX(idx));
-		    }
-		    i += j;
-		    argc = INT2FIX(i);
+	    if (local_body->param.flags.has_opt) {
+		/* optional arguments */
+		int j;
+		for (j = 0; j < local_body->param.opt_num; j++) {
+		    int idx = local_body->local_table_size - (i + j);
+		    ADD_GETLOCAL(args, line, idx, lvar_level);
 		}
+		i += j;
+		argc = i;
+	    }
+	    if (local_body->param.flags.has_rest) {
+		/* rest argument */
+		int idx = local_body->local_table_size - local_body->param.rest_start;
 
-		if (liseq->arg_rest != -1) {
-		    /* rest argument */
-		    int idx = liseq->local_size - liseq->arg_rest;
-		    ADD_INSN1(args, nd_line(node), getlocal, INT2FIX(idx));
-		    argc = INT2FIX(liseq->arg_rest + 1);
-		    flag |= VM_CALL_ARGS_SPLAT_BIT;
-		}
+		ADD_GETLOCAL(args, line, idx, lvar_level);
+		ADD_INSN1(args, line, splatarray, Qfalse);
 
-		if (liseq->arg_post_len) {
-		    /* post arguments */
-		    int post_len = liseq->arg_post_len;
-		    int post_start = liseq->arg_post_start;
+		argc = local_body->param.rest_start + 1;
+		flag |= VM_CALL_ARGS_SPLAT;
+	    }
+	    if (local_body->param.flags.has_post) {
+		/* post arguments */
+		int post_len = local_body->param.post_num;
+		int post_start = local_body->param.post_start;
 
-		    if (liseq->arg_rest != -1) {
-			int j;
-			for (j=0; j<post_len; j++) {
-			    int idx = liseq->local_size - (post_start + j);
-			    ADD_INSN1(args, nd_line(node), getlocal, INT2FIX(idx));
-			}
-			ADD_INSN1(args, nd_line(node), newarray, INT2FIX(j));
-			ADD_INSN (args, nd_line(node), concatarray);
-			/* argc is setteled at above */
+		if (local_body->param.flags.has_rest) {
+		    int j;
+		    for (j=0; j<post_len; j++) {
+			int idx = local_body->local_table_size - (post_start + j);
+			ADD_GETLOCAL(args, line, idx, lvar_level);
 		    }
-		    else {
-			int j;
-			for (j=0; j<post_len; j++) {
-			    int idx = liseq->local_size - (post_start + j);
-			    ADD_INSN1(args, nd_line(node), getlocal, INT2FIX(idx));
-			}
-			argc = INT2FIX(post_len + post_start);
+		    ADD_INSN1(args, line, newarray, INT2FIX(j));
+		    ADD_INSN (args, line, concatarray);
+		    /* argc is settled at above */
+		}
+		else {
+		    int j;
+		    for (j=0; j<post_len; j++) {
+			int idx = local_body->local_table_size - (post_start + j);
+			ADD_GETLOCAL(args, line, idx, lvar_level);
 		    }
+		    argc = post_len + post_start;
+		}
+	    }
+
+	    if (local_body->param.flags.has_kw) { /* TODO: support keywords */
+		int local_size = local_body->local_table_size;
+		argc++;
+
+		ADD_INSN1(args, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+
+		if (local_body->param.flags.has_kwrest) {
+		    int idx = local_body->local_table_size - local_kwd->rest_start;
+		    ADD_GETLOCAL(args, line, idx, lvar_level);
+		}
+		else {
+		    ADD_INSN1(args, line, newhash, INT2FIX(0));
+                    flag |= VM_CALL_KW_SPLAT_MUT;
+		}
+		for (i = 0; i < local_kwd->num; ++i) {
+		    ID id = local_kwd->table[i];
+		    int idx = local_size - get_local_var_idx(liseq, id);
+		    ADD_INSN1(args, line, putobject, ID2SYM(id));
+		    ADD_GETLOCAL(args, line, idx, lvar_level);
 		}
+		ADD_SEND(args, line, id_core_hash_merge_ptr, INT2FIX(i * 2 + 1));
+		if (local_body->param.flags.has_rest) {
+		    ADD_INSN1(args, line, newarray, INT2FIX(1));
+		    ADD_INSN (args, line, concatarray);
+		    --argc;
+		}
+		flag |= VM_CALL_KW_SPLAT;
+	    }
+	    else if (local_body->param.flags.has_kwrest) {
+		int idx = local_body->local_table_size - local_kwd->rest_start;
+		ADD_GETLOCAL(args, line, idx, lvar_level);
+
+		if (local_body->param.flags.has_rest) {
+		    ADD_INSN1(args, line, newarray, INT2FIX(1));
+		    ADD_INSN (args, line, concatarray);
+		}
+		else {
+		    argc++;
+		}
+		flag |= VM_CALL_KW_SPLAT;
 	    }
 	}
 
-	/* dummy reciever */
-	ADD_INSN1(ret, nd_line(node), putobject,
-		  nd_type(node) == NODE_ZSUPER ? Qfalse : Qtrue);
+	ADD_INSN(ret, line, putself);
 	ADD_SEQ(ret, args);
-	ADD_INSN3(ret, nd_line(node), invokesuper,
-		  argc, parent_block, LONG2FIX(flag));
+        ADD_INSN2(ret, line, invokesuper,
+                  new_callinfo(iseq, 0, argc, flag | VM_CALL_SUPER | (type == NODE_ZSUPER ? VM_CALL_ZSUPER : 0) | VM_CALL_FCALL, keywords, parent_block != NULL),
+		  parent_block);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
-      case NODE_ARRAY:{
-	compile_array_(iseq, ret, node, Qtrue, poped);
+      case NODE_LIST:{
+        CHECK(compile_array(iseq, ret, node, popped) >= 0);
 	break;
       }
-      case NODE_ZARRAY:{
-	if (!poped) {
-	    ADD_INSN1(ret, nd_line(node), newarray, INT2FIX(0));
+      case NODE_ZLIST:{
+	if (!popped) {
+	    ADD_INSN1(ret, line, newarray, INT2FIX(0));
 	}
 	break;
       }
       case NODE_VALUES:{
-	NODE *n = node;
+	const NODE *n = node;
+	if (popped) {
+	    COMPILE_ERROR(ERROR_ARGS "NODE_VALUES: must not be popped");
+	}
 	while (n) {
-	    COMPILE(ret, "values item", n->nd_head);
+	    CHECK(COMPILE(ret, "values item", n->nd_head));
 	    n = n->nd_next;
 	}
-	ADD_INSN1(ret, nd_line(node), newarray, INT2FIX(node->nd_alen));
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	}
-	break;
-      }
-      case NODE_HASH:{
-	DECL_ANCHOR(list);
-	VALUE size = 0;
-	int type = node->nd_head ? nd_type(node->nd_head) : NODE_ZARRAY;
-
-	INIT_ANCHOR(list);
-	switch (type) {
-	  case NODE_ARRAY:{
-	    compile_array(iseq, list, node->nd_head, Qfalse);
-	    size = OPERAND_AT(POP_ELEMENT(list), 0);
-	    ADD_SEQ(ret, list);
-	    break;
-	  }
-	  case NODE_ZARRAY:
-	    size = INT2FIX(0);
-	    break;
-
-	  default:
-	    rb_bug("can't make hash with this node: %s", ruby_node_name(type));
-	}
-
-	ADD_INSN1(ret, nd_line(node), newhash, size);
-
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	}
+	ADD_INSN1(ret, line, newarray, INT2FIX(node->nd_alen));
 	break;
       }
-      case NODE_RETURN:{
-	rb_iseq_t *is = iseq;
-
-	while (is) {
-	    if (is->type == ISEQ_TYPE_TOP || is->type == ISEQ_TYPE_CLASS) {
-		COMPILE_ERROR((ERROR_ARGS "Invalid return"));
-		break;
-	    }
-	    else {
-		LABEL *splabel = 0;
-
-		if (is->type == ISEQ_TYPE_METHOD) {
-		    splabel = NEW_LABEL(0);
-		    ADD_LABEL(ret, splabel);
-		    ADD_ADJUST(ret, nd_line(node), 0);
-		}
-
-		COMPILE(ret, "return nd_stts (return val)", node->nd_stts);
-
-		if (is->type == ISEQ_TYPE_METHOD) {
-		    add_ensure_iseq(ret, iseq, 1);
-		    ADD_INSN(ret, nd_line(node), leave);
-		    ADD_ADJUST_RESTORE(ret, splabel);
-
-		    if (!poped) {
-			ADD_INSN(ret, nd_line(node), putnil);
-		    }
-		}
-		else {
-		    ADD_INSN1(ret, nd_line(node), throw, INT2FIX(0x01) /* TAG_RETURN */ );
-		    if (poped) {
-			ADD_INSN(ret, nd_line(node), pop);
-		    }
-		}
-		break;
-	    }
-	}
+      case NODE_HASH:
+        CHECK(compile_hash(iseq, ret, node, FALSE, popped) >= 0);
+        break;
+      case NODE_RETURN:
+	CHECK(compile_return(iseq, ret, node, popped));
 	break;
-      }
       case NODE_YIELD:{
 	DECL_ANCHOR(args);
 	VALUE argc;
-	unsigned long flag = 0;
+	unsigned int flag = 0;
+	struct rb_callinfo_kwarg *keywords = NULL;
 
 	INIT_ANCHOR(args);
-	if (iseq->type == ISEQ_TYPE_TOP || iseq->type == ISEQ_TYPE_CLASS) {
-	    COMPILE_ERROR((ERROR_ARGS "Invalid yield"));
-	}
+
+        if (check_yield_place(iseq) == FALSE) {
+	    COMPILE_ERROR(ERROR_ARGS "Invalid yield");
+            goto ng;
+        }
 
 	if (node->nd_head) {
-	    argc = setup_args(iseq, args, node->nd_head, &flag);
+	    argc = setup_args(iseq, args, node->nd_head, &flag, &keywords);
+	    CHECK(!NIL_P(argc));
 	}
 	else {
 	    argc = INT2FIX(0);
 	}
 
 	ADD_SEQ(ret, args);
-	ADD_INSN2(ret, nd_line(node), invokeblock, argc, LONG2FIX(flag));
+	ADD_INSN1(ret, line, invokeblock, new_callinfo(iseq, 0, FIX2INT(argc), flag, keywords, FALSE));
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
+
+        int level = 0;
+        const rb_iseq_t *tmp_iseq = iseq;
+        for (; tmp_iseq != iseq->body->local_iseq; level++ ) {
+            tmp_iseq = tmp_iseq->body->parent_iseq;
+        }
+        if (level > 0) access_outer_variables(iseq, level, rb_intern("yield"), true);
 	break;
       }
       case NODE_LVAR:{
-	if (!poped) {
+	if (!popped) {
 	    ID id = node->nd_vid;
-	    int idx = iseq->local_iseq->local_size - get_local_var_idx(iseq, id);
+	    int idx = body->local_iseq->body->local_table_size - get_local_var_idx(iseq, id);
 
 	    debugs("id: %s idx: %d\n", rb_id2name(id), idx);
-	    ADD_INSN1(ret, nd_line(node), getlocal, INT2FIX(idx));
+	    ADD_GETLOCAL(ret, line, idx, get_lvar_level(iseq));
 	}
 	break;
       }
       case NODE_DVAR:{
 	int lv, idx, ls;
 	debugi("nd_vid", node->nd_vid);
-	if (!poped) {
+	if (!popped) {
 	    idx = get_dyna_var_idx(iseq, node->nd_vid, &lv, &ls);
 	    if (idx < 0) {
-		rb_bug("unknown dvar (%s)", rb_id2name(node->nd_vid));
+		COMPILE_ERROR(ERROR_ARGS "unknown dvar (%"PRIsVALUE")",
+			      rb_id2str(node->nd_vid));
+		goto ng;
 	    }
-	    ADD_INSN2(ret, nd_line(node), getdynamic, INT2FIX(ls - idx), INT2FIX(lv));
+	    ADD_GETLOCAL(ret, line, ls - idx, lv);
 	}
 	break;
       }
       case NODE_GVAR:{
-	ADD_INSN1(ret, nd_line(node), getglobal,
-		  (((long)node->nd_entry) | 1));
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	ADD_INSN1(ret, line, getglobal, ID2SYM(node->nd_entry));
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_IVAR:{
 	debugi("nd_vid", node->nd_vid);
-	if (!poped) {
-	    ADD_INSN1(ret, nd_line(node), getinstancevariable,
-		      ID2SYM(node->nd_vid));
+	if (!popped) {
+	    ADD_INSN2(ret, line, getinstancevariable,
+		      ID2SYM(node->nd_vid),
+		      get_ivar_ic_value(iseq,node->nd_vid));
 	}
 	break;
       }
       case NODE_CONST:{
 	debugi("nd_vid", node->nd_vid);
 
-	if (iseq->compile_data->option->inline_const_cache) {
-	    LABEL *lstart = NEW_LABEL(nd_line(node));
-	    LABEL *lend = NEW_LABEL(nd_line(node));
+	if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
+	    LABEL *lend = NEW_LABEL(line);
+	    int ic_index = body->is_size++;
 
-	    ADD_LABEL(ret, lstart);
-	    ADD_INSN2(ret, nd_line(node), getinlinecache, 0, lend);
-	    ADD_INSN1(ret, nd_line(node), getconstant, ID2SYM(node->nd_vid));
-	    ADD_INSN1(ret, nd_line(node), setinlinecache, lstart);
+            ADD_INSN2(ret, line, opt_getinlinecache, lend, INT2FIX(ic_index));
+            ADD_INSN1(ret, line, putobject, Qtrue);
+            ADD_INSN1(ret, line, getconstant, ID2SYM(node->nd_vid));
+            ADD_INSN1(ret, line, opt_setinlinecache, INT2FIX(ic_index));
 	    ADD_LABEL(ret, lend);
 	}
 	else {
-	    ADD_INSN(ret, nd_line(node), putnil);
-	    ADD_INSN1(ret, nd_line(node), getconstant, ID2SYM(node->nd_vid));
+	    ADD_INSN(ret, line, putnil);
+            ADD_INSN1(ret, line, putobject, Qtrue);
+            ADD_INSN1(ret, line, getconstant, ID2SYM(node->nd_vid));
 	}
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_CVAR:{
-	if (!poped) {
-	    ADD_INSN1(ret, nd_line(node), getclassvariable,
+	if (!popped) {
+	    ADD_INSN1(ret, line, getclassvariable,
 		      ID2SYM(node->nd_vid));
 	}
 	break;
       }
       case NODE_NTH_REF:{
-        if (!poped) {
-	    ADD_INSN2(ret, nd_line(node), getspecial, INT2FIX(1) /* '~'  */,
+        if (!popped) {
+	    if (!node->nd_nth) {
+		ADD_INSN(ret, line, putnil);
+		break;
+	    }
+	    ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~'  */,
 		      INT2FIX(node->nd_nth << 1));
 	}
 	break;
       }
       case NODE_BACK_REF:{
-	if (!poped) {
-	    ADD_INSN2(ret, nd_line(node), getspecial, INT2FIX(1) /* '~' */,
+	if (!popped) {
+	    ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~' */,
 		      INT2FIX(0x01 | (node->nd_nth << 1)));
 	}
 	break;
@@ -4351,295 +8379,303 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 
 	INIT_ANCHOR(recv);
 	INIT_ANCHOR(val);
-	switch(nd_type(node)) {
+	switch (nd_type(node)) {
 	  case NODE_MATCH:
-	    ADD_INSN1(recv, nd_line(node), putobject, node->nd_lit);
-	    ADD_INSN2(val, nd_line(node), getspecial, INT2FIX(0),
+	    ADD_INSN1(recv, line, putobject, node->nd_lit);
+	    ADD_INSN2(val, line, getspecial, INT2FIX(0),
 		      INT2FIX(0));
 	    break;
 	  case NODE_MATCH2:
-	    COMPILE(recv, "reciever", node->nd_recv);
-	    COMPILE(val, "value", node->nd_value);
+	    CHECK(COMPILE(recv, "receiver", node->nd_recv));
+	    CHECK(COMPILE(val, "value", node->nd_value));
 	    break;
 	  case NODE_MATCH3:
-	    COMPILE(recv, "reciever", node->nd_value);
-	    COMPILE(val, "value", node->nd_recv);
+	    CHECK(COMPILE(recv, "receiver", node->nd_value));
+	    CHECK(COMPILE(val, "value", node->nd_recv));
 	    break;
 	}
 
-	if (iseq->compile_data->option->specialized_instruction) {
-	    /* TODO: detect by node */
-	    if (recv->last == recv->anchor.next &&
-		INSN_OF(recv->last) == BIN(putobject) &&
-		nd_type(node) == NODE_MATCH2) {
-		ADD_SEQ(ret, val);
-		ADD_INSN1(ret, nd_line(node), opt_regexpmatch1,
-			  OPERAND_AT(recv->last, 0));
-	    }
-	    else {
-		ADD_SEQ(ret, recv);
-		ADD_SEQ(ret, val);
-		ADD_INSN(ret, nd_line(node), opt_regexpmatch2);
-	    }
-	}
-	else {
-	    ADD_SEQ(ret, recv);
-	    ADD_SEQ(ret, val);
-	    ADD_SEND(ret, nd_line(node), ID2SYM(idEqTilde), INT2FIX(1));
+        ADD_SEQ(ret, recv);
+        ADD_SEQ(ret, val);
+        ADD_SEND(ret, line, idEqTilde, INT2FIX(1));
+
+	if (node->nd_args) {
+	    compile_named_capture_assign(iseq, ret, node->nd_args);
 	}
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_LIT:{
 	debugp_param("lit", node->nd_lit);
-	if (!poped) {
-	    ADD_INSN1(ret, nd_line(node), putobject, node->nd_lit);
+	if (!popped) {
+	    ADD_INSN1(ret, line, putobject, node->nd_lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, node->nd_lit);
 	}
 	break;
       }
       case NODE_STR:{
 	debugp_param("nd_lit", node->nd_lit);
-	if (!poped) {
-	    hide_obj(node->nd_lit);
-	    ADD_INSN1(ret, nd_line(node), putstring, node->nd_lit);
+	if (!popped) {
+	    VALUE lit = node->nd_lit;
+	    if (!ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal) {
+		lit = rb_fstring(lit);
+		ADD_INSN1(ret, line, putstring, lit);
+                RB_OBJ_WRITTEN(iseq, Qundef, lit);
+	    }
+	    else {
+		if (ISEQ_COMPILE_DATA(iseq)->option->debug_frozen_string_literal || RTEST(ruby_debug)) {
+		    VALUE debug_info = rb_ary_new_from_args(2, rb_iseq_path(iseq), INT2FIX(line));
+		    lit = rb_str_dup(lit);
+		    rb_ivar_set(lit, id_debug_created_info, rb_obj_freeze(debug_info));
+		    lit = rb_str_freeze(lit);
+		}
+		else {
+		    lit = rb_fstring(lit);
+		}
+		ADD_INSN1(ret, line, putobject, lit);
+                RB_OBJ_WRITTEN(iseq, Qundef, lit);
+	    }
 	}
 	break;
       }
       case NODE_DSTR:{
 	compile_dstr(iseq, ret, node);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_XSTR:{
-	ADD_CALL_RECEIVER(ret, nd_line(node));
-	ADD_INSN1(ret, nd_line(node), putobject, node->nd_lit);
-	ADD_CALL(ret, nd_line(node), ID2SYM(idBackquote), INT2FIX(1));
+	ADD_CALL_RECEIVER(ret, line);
+        VALUE str = rb_fstring(node->nd_lit);
+	ADD_INSN1(ret, line, putobject, str);
+        RB_OBJ_WRITTEN(iseq, Qundef, str);
+	ADD_CALL(ret, line, idBackquote, INT2FIX(1));
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_DXSTR:{
-	ADD_CALL_RECEIVER(ret, nd_line(node));
+	ADD_CALL_RECEIVER(ret, line);
 	compile_dstr(iseq, ret, node);
-	ADD_CALL(ret, nd_line(node), ID2SYM(idBackquote), INT2FIX(1));
+	ADD_CALL(ret, line, idBackquote, INT2FIX(1));
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
-      case NODE_EVSTR:{
-	COMPILE(ret, "nd_body", node->nd_body);
-
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	}
-	else {
-	    ADD_INSN(ret, nd_line(node), tostring);
-	}
+      case NODE_EVSTR:
+	CHECK(compile_evstr(iseq, ret, node->nd_body, popped));
 	break;
-      }
       case NODE_DREGX:{
 	compile_dregx(iseq, ret, node);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
-      case NODE_DREGX_ONCE:{
-	/* TODO: once? */
-	LABEL *lstart = NEW_LABEL(nd_line(node));
-	LABEL *lend = NEW_LABEL(nd_line(node));
-
-	ADD_LABEL(ret, lstart);
-	ADD_INSN2(ret, nd_line(node), onceinlinecache, 0, lend);
-	ADD_INSN(ret, nd_line(node), pop);
-
-	compile_dregx(iseq, ret, node);
+      case NODE_ONCE:{
+	int ic_index = body->is_size++;
+	const rb_iseq_t *block_iseq;
+	block_iseq = NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq), ISEQ_TYPE_PLAIN, line);
 
-	ADD_INSN1(ret, nd_line(node), setinlinecache, lstart);
-	ADD_LABEL(ret, lend);
+	ADD_INSN2(ret, line, once, block_iseq, INT2FIX(ic_index));
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)block_iseq);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_ARGSCAT:{
-	COMPILE(ret, "argscat head", node->nd_head);
-	COMPILE(ret, "argscat body", node->nd_body);
-	ADD_INSN(ret, nd_line(node), concatarray);
+	if (popped) {
+	    CHECK(COMPILE(ret, "argscat head", node->nd_head));
+	    ADD_INSN1(ret, line, splatarray, Qfalse);
+	    ADD_INSN(ret, line, pop);
+	    CHECK(COMPILE(ret, "argscat body", node->nd_body));
+	    ADD_INSN1(ret, line, splatarray, Qfalse);
+	    ADD_INSN(ret, line, pop);
+	}
+	else {
+	    CHECK(COMPILE(ret, "argscat head", node->nd_head));
+	    CHECK(COMPILE(ret, "argscat body", node->nd_body));
+	    ADD_INSN(ret, line, concatarray);
+	}
 	break;
       }
       case NODE_ARGSPUSH:{
-	COMPILE(ret, "arsgpush head", node->nd_head);
-	COMPILE(ret, "argspush body", node->nd_body);
-	ADD_INSN1(ret, nd_line(node), newarray, INT2FIX(1));
-	ADD_INSN(ret, nd_line(node), concatarray);
+	if (popped) {
+	    CHECK(COMPILE(ret, "arsgpush head", node->nd_head));
+	    ADD_INSN1(ret, line, splatarray, Qfalse);
+	    ADD_INSN(ret, line, pop);
+	    CHECK(COMPILE_(ret, "argspush body", node->nd_body, popped));
+	}
+	else {
+	    CHECK(COMPILE(ret, "arsgpush head", node->nd_head));
+	    CHECK(COMPILE_(ret, "argspush body", node->nd_body, popped));
+	    ADD_INSN1(ret, line, newarray, INT2FIX(1));
+	    ADD_INSN(ret, line, concatarray);
+	}
 	break;
       }
       case NODE_SPLAT:{
-	COMPILE(ret, "splat", node->nd_head);
-	ADD_INSN1(ret, nd_line(node), splatarray, Qfalse);
+	CHECK(COMPILE(ret, "splat", node->nd_head));
+	ADD_INSN1(ret, line, splatarray, Qtrue);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_DEFN:{
-	VALUE iseqval = NEW_ISEQVAL(node->nd_defn,
-				    rb_str_dup(rb_id2str(node->nd_mid)),
-				    ISEQ_TYPE_METHOD);
-
-	debugp_param("defn/iseq", iseqval);
+        ID mid = node->nd_mid;
+	const rb_iseq_t *method_iseq = NEW_ISEQ(node->nd_defn,
+                                                rb_id2str(mid),
+						ISEQ_TYPE_METHOD, line);
 
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
-	ADD_INSN1(ret, nd_line(node), putobject, ID2SYM(node->nd_mid));
-	ADD_INSN1(ret, nd_line(node), putiseq, iseqval);
-	ADD_SEND (ret, nd_line(node), ID2SYM(id_core_define_method), INT2FIX(3));
+	debugp_param("defn/iseq", rb_iseqw_new(method_iseq));
+        ADD_INSN2(ret, line, definemethod, ID2SYM(mid), method_iseq);
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)method_iseq);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+        if (!popped) {
+            ADD_INSN1(ret, line, putobject, ID2SYM(mid));
 	}
 
-	debugp_param("defn", iseqval);
 	break;
       }
       case NODE_DEFS:{
-	VALUE iseqval = NEW_ISEQVAL(node->nd_defn,
-				    rb_str_dup(rb_id2str(node->nd_mid)),
-				    ISEQ_TYPE_METHOD);
-
-	debugp_param("defs/iseq", iseqval);
-
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-	COMPILE(ret, "defs: recv", node->nd_recv);
-	ADD_INSN1(ret, nd_line(node), putobject, ID2SYM(node->nd_mid));
-	ADD_INSN1(ret, nd_line(node), putiseq, iseqval);
-	ADD_SEND (ret, nd_line(node), ID2SYM(id_core_define_singleton_method), INT2FIX(3));
-
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	}
+        ID mid = node->nd_mid;
+        const rb_iseq_t * singleton_method_iseq = NEW_ISEQ(node->nd_defn,
+                                                           rb_id2str(mid),
+                                                           ISEQ_TYPE_METHOD, line);
+
+        debugp_param("defs/iseq", rb_iseqw_new(singleton_method_iseq));
+        CHECK(COMPILE(ret, "defs: recv", node->nd_recv));
+        ADD_INSN2(ret, line, definesmethod, ID2SYM(mid), singleton_method_iseq);
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)singleton_method_iseq);
+
+        if (!popped) {
+            ADD_INSN1(ret, line, putobject, ID2SYM(mid));
+        }
 	break;
       }
       case NODE_ALIAS:{
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
-	COMPILE(ret, "alias arg1", node->u1.node);
-	COMPILE(ret, "alias arg2", node->u2.node);
-	ADD_SEND(ret, nd_line(node), ID2SYM(id_core_set_method_alias), INT2FIX(3));
+	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
+	CHECK(COMPILE(ret, "alias arg1", node->nd_1st));
+	CHECK(COMPILE(ret, "alias arg2", node->nd_2nd));
+	ADD_SEND(ret, line, id_core_set_method_alias, INT2FIX(3));
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_VALIAS:{
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-	ADD_INSN1(ret, nd_line(node), putobject, ID2SYM(node->u1.id));
-	ADD_INSN1(ret, nd_line(node), putobject, ID2SYM(node->u2.id));
-	ADD_SEND(ret, nd_line(node), ID2SYM(id_core_set_variable_alias), INT2FIX(2));
+	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+	ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_alias));
+	ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_orig));
+	ADD_SEND(ret, line, id_core_set_variable_alias, INT2FIX(2));
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_UNDEF:{
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
-	COMPILE(ret, "undef arg", node->u2.node);
-	ADD_SEND(ret, nd_line(node), ID2SYM(id_core_undef_method), INT2FIX(2));
+	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
+	CHECK(COMPILE(ret, "undef arg", node->nd_undef));
+	ADD_SEND(ret, line, id_core_undef_method, INT2FIX(2));
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_CLASS:{
-	VALUE iseqval =
-	    NEW_CHILD_ISEQVAL(
-		node->nd_body,
-		rb_sprintf("<class:%s>", rb_id2name(node->nd_cpath->nd_mid)),
-		ISEQ_TYPE_CLASS);
-	compile_cpath(ret, iseq, node->nd_cpath);
-	COMPILE(ret, "super", node->nd_super);
-	ADD_INSN3(ret, nd_line(node), defineclass,
-		  ID2SYM(node->nd_cpath->nd_mid), iseqval, INT2FIX(0));
-
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	const rb_iseq_t *class_iseq = NEW_CHILD_ISEQ(node->nd_body,
+						     rb_sprintf("<class:%"PRIsVALUE">", rb_id2str(node->nd_cpath->nd_mid)),
+						     ISEQ_TYPE_CLASS, line);
+	const int flags = VM_DEFINECLASS_TYPE_CLASS |
+	    (node->nd_super ? VM_DEFINECLASS_FLAG_HAS_SUPERCLASS : 0) |
+	    compile_cpath(ret, iseq, node->nd_cpath);
+
+	CHECK(COMPILE(ret, "super", node->nd_super));
+	ADD_INSN3(ret, line, defineclass, ID2SYM(node->nd_cpath->nd_mid), class_iseq, INT2FIX(flags));
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)class_iseq);
+
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_MODULE:{
-	VALUE iseqval = NEW_CHILD_ISEQVAL(
-	    node->nd_body,
-	    rb_sprintf("<module:%s>", rb_id2name(node->nd_cpath->nd_mid)),
-	    ISEQ_TYPE_CLASS);
-
-	compile_cpath(ret, iseq, node->nd_cpath);
-	ADD_INSN (ret, nd_line(node), putnil); /* dummy */
-	ADD_INSN3(ret, nd_line(node), defineclass,
-		  ID2SYM(node->nd_cpath->nd_mid), iseqval, INT2FIX(2));
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+        const rb_iseq_t *module_iseq = NEW_CHILD_ISEQ(node->nd_body,
+						      rb_sprintf("<module:%"PRIsVALUE">", rb_id2str(node->nd_cpath->nd_mid)),
+						      ISEQ_TYPE_CLASS, line);
+	const int flags = VM_DEFINECLASS_TYPE_MODULE |
+	    compile_cpath(ret, iseq, node->nd_cpath);
+
+	ADD_INSN (ret, line, putnil); /* dummy */
+	ADD_INSN3(ret, line, defineclass, ID2SYM(node->nd_cpath->nd_mid), module_iseq, INT2FIX(flags));
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)module_iseq);
+
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_SCLASS:{
 	ID singletonclass;
-	VALUE iseqval =
-	    NEW_ISEQVAL(node->nd_body, rb_str_new2("singletonclass"),
-			ISEQ_TYPE_CLASS);
+	const rb_iseq_t *singleton_class = NEW_ISEQ(node->nd_body, rb_fstring_lit("singleton class"),
+						    ISEQ_TYPE_CLASS, line);
 
-	COMPILE(ret, "sclass#recv", node->nd_recv);
-	ADD_INSN (ret, nd_line(node), putnil);
+	CHECK(COMPILE(ret, "sclass#recv", node->nd_recv));
+	ADD_INSN (ret, line, putnil);
 	CONST_ID(singletonclass, "singletonclass");
-	ADD_INSN3(ret, nd_line(node), defineclass,
-		  ID2SYM(singletonclass), iseqval, INT2FIX(1));
+	ADD_INSN3(ret, line, defineclass,
+		  ID2SYM(singletonclass), singleton_class,
+		  INT2FIX(VM_DEFINECLASS_TYPE_SINGLETON_CLASS));
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)singleton_class);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_COLON2:{
 	if (rb_is_const_id(node->nd_mid)) {
 	    /* constant */
-	    LABEL *lstart = NEW_LABEL(nd_line(node));
-	    LABEL *lend = NEW_LABEL(nd_line(node));
+	    LABEL *lend = NEW_LABEL(line);
+	    int ic_index = body->is_size++;
+
 	    DECL_ANCHOR(pref);
 	    DECL_ANCHOR(body);
 
 	    INIT_ANCHOR(pref);
 	    INIT_ANCHOR(body);
-	    compile_colon2(iseq, node, pref, body);
-	    if (LIST_SIZE_ZERO(pref)) {
-		if (iseq->compile_data->option->inline_const_cache) {
-		    ADD_LABEL(ret, lstart);
-		    ADD_INSN2(ret, nd_line(node), getinlinecache, 0, lend);
+	    CHECK(compile_const_prefix(iseq, node, pref, body));
+	    if (LIST_INSN_SIZE_ZERO(pref)) {
+		if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
+                    ADD_INSN2(ret, line, opt_getinlinecache, lend, INT2FIX(ic_index));
 		}
 		else {
-		    ADD_INSN(ret, nd_line(node), putnil);
+		    ADD_INSN(ret, line, putnil);
 		}
 
 		ADD_SEQ(ret, body);
 
-		if (iseq->compile_data->option->inline_const_cache) {
-		    ADD_INSN1(ret, nd_line(node), setinlinecache, lstart);
+		if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
+                    ADD_INSN1(ret, line, opt_setinlinecache, INT2FIX(ic_index));
 		    ADD_LABEL(ret, lend);
 		}
 	    }
@@ -4650,267 +8686,301 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 	}
 	else {
 	    /* function call */
-	    ADD_CALL_RECEIVER(ret, nd_line(node));
-	    COMPILE(ret, "colon2#nd_head", node->nd_head);
-	    ADD_CALL(ret, nd_line(node), ID2SYM(node->nd_mid),
-		     INT2FIX(1));
+	    ADD_CALL_RECEIVER(ret, line);
+	    CHECK(COMPILE(ret, "colon2#nd_head", node->nd_head));
+	    ADD_CALL(ret, line, node->nd_mid, INT2FIX(1));
 	}
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_COLON3:{
-	LABEL *lstart = NEW_LABEL(nd_line(node));
-	LABEL *lend = NEW_LABEL(nd_line(node));
+	LABEL *lend = NEW_LABEL(line);
+	int ic_index = body->is_size++;
+
 	debugi("colon3#nd_mid", node->nd_mid);
 
 	/* add cache insn */
-	if (iseq->compile_data->option->inline_const_cache) {
-	    ADD_LABEL(ret, lstart);
-	    ADD_INSN2(ret, nd_line(node), getinlinecache, 0, lend);
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
+            ADD_INSN2(ret, line, opt_getinlinecache, lend, INT2FIX(ic_index));
+	    ADD_INSN(ret, line, pop);
 	}
 
-	ADD_INSN1(ret, nd_line(node), putobject, rb_cObject);
-	ADD_INSN1(ret, nd_line(node), getconstant, ID2SYM(node->nd_mid));
+	ADD_INSN1(ret, line, putobject, rb_cObject);
+        ADD_INSN1(ret, line, putobject, Qtrue);
+        ADD_INSN1(ret, line, getconstant, ID2SYM(node->nd_mid));
 
-	if (iseq->compile_data->option->inline_const_cache) {
-	    ADD_INSN1(ret, nd_line(node), setinlinecache, lstart);
+	if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
+            ADD_INSN1(ret, line, opt_setinlinecache, INT2FIX(ic_index));
 	    ADD_LABEL(ret, lend);
 	}
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_DOT2:
       case NODE_DOT3:{
-	int flag = type == NODE_DOT2 ? INT2FIX(0) : INT2FIX(1);
-	COMPILE(ret, "min", (NODE *) node->nd_beg);
-	COMPILE(ret, "max", (NODE *) node->nd_end);
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
-	    ADD_INSN(ret, nd_line(node), pop);
+	int excl = type == NODE_DOT3;
+	VALUE flag = INT2FIX(excl);
+	const NODE *b = node->nd_beg;
+	const NODE *e = node->nd_end;
+
+        if (optimizable_range_item_p(b) && optimizable_range_item_p(e)) {
+	    if (!popped) {
+                VALUE bv = nd_type(b) == NODE_LIT ? b->nd_lit : Qnil;
+                VALUE ev = nd_type(e) == NODE_LIT ? e->nd_lit : Qnil;
+                VALUE val = rb_range_new(bv, ev, excl);
+                ADD_INSN1(ret, line, putobject, val);
+                RB_OBJ_WRITTEN(iseq, Qundef, val);
+	    }
 	}
 	else {
-	    ADD_INSN1(ret, nd_line(node), newrange, flag);
+	    CHECK(COMPILE_(ret, "min", b, popped));
+	    CHECK(COMPILE_(ret, "max", e, popped));
+	    if (!popped) {
+		ADD_INSN1(ret, line, newrange, flag);
+	    }
 	}
 	break;
       }
       case NODE_FLIP2:
       case NODE_FLIP3:{
-	LABEL *lend = NEW_LABEL(nd_line(node));
-	LABEL *lfin = NEW_LABEL(nd_line(node));
-	LABEL *ltrue = NEW_LABEL(nd_line(node));
-	VALUE key = rb_sprintf("flipflag/%s-%p-%d",
-			       RSTRING_PTR(iseq->name), (void *)iseq,
-			       iseq->compile_data->flip_cnt++);
-
-	iseq_add_mark_object_compile_time(iseq, key);
-	ADD_INSN2(ret, nd_line(node), getspecial, key, INT2FIX(0));
-	ADD_INSNL(ret, nd_line(node), branchif, lend);
-
-	/* *flip == 0 */
-	COMPILE(ret, "flip2 beg", node->nd_beg);
-	ADD_INSN(ret, nd_line(node), dup);
-	ADD_INSNL(ret, nd_line(node), branchunless, lfin);
-	if (nd_type(node) == NODE_FLIP3) {
-	    ADD_INSN(ret, nd_line(node), dup);
-	    ADD_INSN1(ret, nd_line(node), setspecial, key);
-	    ADD_INSNL(ret, nd_line(node), jump, lfin);
-	}
-	else {
-	    ADD_INSN1(ret, nd_line(node), setspecial, key);
-	}
-
-	/* *flip == 1 */
-	ADD_LABEL(ret, lend);
-	COMPILE(ret, "flip2 end", node->nd_end);
-	ADD_INSNL(ret, nd_line(node), branchunless, ltrue);
-	ADD_INSN1(ret, nd_line(node), putobject, Qfalse);
-	ADD_INSN1(ret, nd_line(node), setspecial, key);
-
+	LABEL *lend = NEW_LABEL(line);
+	LABEL *ltrue = NEW_LABEL(line);
+	LABEL *lfalse = NEW_LABEL(line);
+	CHECK(compile_flip_flop(iseq, ret, node, type == NODE_FLIP2,
+				ltrue, lfalse));
 	ADD_LABEL(ret, ltrue);
-	ADD_INSN1(ret, nd_line(node), putobject, Qtrue);
-
-	ADD_LABEL(ret, lfin);
+	ADD_INSN1(ret, line, putobject, Qtrue);
+	ADD_INSNL(ret, line, jump, lend);
+	ADD_LABEL(ret, lfalse);
+	ADD_INSN1(ret, line, putobject, Qfalse);
+	ADD_LABEL(ret, lend);
 	break;
       }
       case NODE_SELF:{
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), putself);
+	if (!popped) {
+	    ADD_INSN(ret, line, putself);
 	}
 	break;
       }
       case NODE_NIL:{
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), putnil);
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
 	}
 	break;
       }
       case NODE_TRUE:{
-	if (!poped) {
-	    ADD_INSN1(ret, nd_line(node), putobject, Qtrue);
+	if (!popped) {
+	    ADD_INSN1(ret, line, putobject, Qtrue);
 	}
 	break;
       }
       case NODE_FALSE:{
-	if (!poped) {
-	    ADD_INSN1(ret, nd_line(node), putobject, Qfalse);
+	if (!popped) {
+	    ADD_INSN1(ret, line, putobject, Qfalse);
 	}
 	break;
       }
       case NODE_ERRINFO:{
-	if (!poped) {
-	    if (iseq->type == ISEQ_TYPE_RESCUE) {
-		ADD_INSN2(ret, nd_line(node), getdynamic, INT2FIX(2), INT2FIX(0));
+	if (!popped) {
+	    if (body->type == ISEQ_TYPE_RESCUE) {
+		ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
 	    }
 	    else {
-		rb_iseq_t *ip = iseq;
+		const rb_iseq_t *ip = iseq;
 		int level = 0;
 		while (ip) {
-		    if (ip->type == ISEQ_TYPE_RESCUE) {
+		    if (ip->body->type == ISEQ_TYPE_RESCUE) {
 			break;
 		    }
-		    ip = ip->parent_iseq;
+		    ip = ip->body->parent_iseq;
 		    level++;
 		}
 		if (ip) {
-		    ADD_INSN2(ret, nd_line(node), getdynamic, INT2FIX(2), INT2FIX(level));
+		    ADD_GETLOCAL(ret, line, LVAR_ERRINFO, level);
 		}
 		else {
-		    ADD_INSN(ret, nd_line(node), putnil);
+		    ADD_INSN(ret, line, putnil);
 		}
 	    }
 	}
 	break;
       }
-      case NODE_DEFINED:{
-	if (!poped) {
-	    LABEL *lfinish[2];
-	    lfinish[0] = NEW_LABEL(nd_line(node));
-	    lfinish[1] = 0;
-	    defined_expr(iseq, ret, node->nd_head, lfinish, Qtrue);
-	    if (lfinish[1]) {
-		ADD_INSNL(ret, nd_line(node), jump, lfinish[0]);
-		ADD_LABEL(ret, lfinish[1]);
-		ADD_INSN(ret, nd_line(node), putnil);
-	    }
-	    ADD_LABEL(ret, lfinish[0]);
+      case NODE_DEFINED:
+	if (!popped) {
+	    CHECK(compile_defined_expr(iseq, ret, node, Qtrue));
 	}
 	break;
-      }
       case NODE_POSTEXE:{
-	LABEL *lstart = NEW_LABEL(nd_line(node));
-	LABEL *lend = NEW_LABEL(nd_line(node));
-	VALUE block = NEW_CHILD_ISEQVAL(node->nd_body, make_name_for_block(iseq), ISEQ_TYPE_BLOCK);
-
-	ADD_LABEL(ret, lstart);
-	ADD_INSN2(ret, nd_line(node), onceinlinecache, 0, lend);
-	ADD_INSN(ret, nd_line(node), pop);
-
-	ADD_INSN1(ret, nd_line(node), putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-	ADD_INSN1(ret, nd_line(node), putiseq, block);
-	ADD_SEND (ret, nd_line(node), ID2SYM(id_core_set_postexe), INT2FIX(1));
+	/* compiled to:
+	 *   ONCE{ rb_mRubyVMFrozenCore::core#set_postexe{ ... } }
+	 */
+	int is_index = body->is_size++;
+        struct rb_iseq_new_with_callback_callback_func *ifunc =
+            rb_iseq_new_with_callback_new_callback(build_postexe_iseq, node->nd_body);
+	const rb_iseq_t *once_iseq =
+            new_child_iseq_with_callback(iseq, ifunc,
+				 rb_fstring(make_name_for_block(iseq)), iseq, ISEQ_TYPE_BLOCK, line);
 
-	ADD_INSN1(ret, nd_line(node), setinlinecache, lstart);
-	ADD_LABEL(ret, lend);
+	ADD_INSN2(ret, line, once, once_iseq, INT2FIX(is_index));
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)once_iseq);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
+      case NODE_KW_ARG:
+	{
+	    LABEL *end_label = NEW_LABEL(nd_line(node));
+	    const NODE *default_value = node->nd_body->nd_value;
+
+            if (default_value == NODE_SPECIAL_REQUIRED_KEYWORD) {
+		/* required argument. do nothing */
+		COMPILE_ERROR(ERROR_ARGS "unreachable");
+		goto ng;
+	    }
+	    else if (nd_type(default_value) == NODE_LIT ||
+		     nd_type(default_value) == NODE_NIL ||
+		     nd_type(default_value) == NODE_TRUE ||
+		     nd_type(default_value) == NODE_FALSE) {
+		COMPILE_ERROR(ERROR_ARGS "unreachable");
+		goto ng;
+	    }
+	    else {
+		/* if keywordcheck(_kw_bits, nth_keyword)
+		 *   kw = default_value
+		 * end
+		 */
+		int kw_bits_idx = body->local_table_size - body->param.keyword->bits_start;
+		int keyword_idx = body->param.keyword->num;
+
+		ADD_INSN2(ret, line, checkkeyword, INT2FIX(kw_bits_idx + VM_ENV_DATA_SIZE - 1), INT2FIX(keyword_idx));
+		ADD_INSNL(ret, line, branchif, end_label);
+		CHECK(COMPILE_POPPED(ret, "keyword default argument", node->nd_body));
+		ADD_LABEL(ret, end_label);
+	    }
+
+	    break;
+	}
       case NODE_DSYM:{
 	compile_dstr(iseq, ret, node);
-	if (!poped) {
-	    ADD_SEND(ret, nd_line(node), ID2SYM(idIntern), INT2FIX(0));
+	if (!popped) {
+	    ADD_INSN(ret, line, intern);
 	}
 	else {
-	    ADD_INSN(ret, nd_line(node), pop);
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       case NODE_ATTRASGN:{
 	DECL_ANCHOR(recv);
 	DECL_ANCHOR(args);
-	unsigned long flag = 0;
+	unsigned int flag = 0;
+	ID mid = node->nd_mid;
 	VALUE argc;
+        LABEL *else_label = NULL;
+        VALUE branches = Qfalse;
+
+	/* optimization shortcut
+	 *   obj["literal"] = value -> opt_aset_with(obj, "literal", value)
+	 */
+	if (mid == idASET && !private_recv_p(node) && node->nd_args &&
+	    nd_type(node->nd_args) == NODE_LIST && node->nd_args->nd_alen == 2 &&
+	    nd_type(node->nd_args->nd_head) == NODE_STR &&
+	    ISEQ_COMPILE_DATA(iseq)->current_block == NULL &&
+            !ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal &&
+	    ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction)
+	{
+	    VALUE str = rb_fstring(node->nd_args->nd_head->nd_lit);
+	    CHECK(COMPILE(ret, "recv", node->nd_recv));
+	    CHECK(COMPILE(ret, "value", node->nd_args->nd_next->nd_head));
+	    if (!popped) {
+		ADD_INSN(ret, line, swap);
+		ADD_INSN1(ret, line, topn, INT2FIX(1));
+	    }
+            ADD_INSN2(ret, line, opt_aset_with, str,
+                      new_callinfo(iseq, idASET, 2, 0, NULL, FALSE));
+            RB_OBJ_WRITTEN(iseq, Qundef, str);
+	    ADD_INSN(ret, line, pop);
+	    break;
+	}
 
 	INIT_ANCHOR(recv);
 	INIT_ANCHOR(args);
-	argc = setup_args(iseq, args, node->nd_args, &flag);
+	argc = setup_args(iseq, args, node->nd_args, &flag, NULL);
+	CHECK(!NIL_P(argc));
 
-	if (node->nd_recv == (NODE *) 1) {
-	    flag |= VM_CALL_FCALL_BIT;
-	    ADD_INSN(recv, nd_line(node), putself);
-	}
-	else {
-	    COMPILE(recv, "recv", node->nd_recv);
-	}
+        int asgnflag = COMPILE_RECV(recv, "recv", node);
+        CHECK(asgnflag != -1);
+        flag |= (unsigned int)asgnflag;
 
 	debugp_param("argc", argc);
-	debugp_param("nd_mid", ID2SYM(node->nd_mid));
+	debugp_param("nd_mid", ID2SYM(mid));
 
-	if (!poped) {
-	    ADD_INSN(ret, nd_line(node), putnil);
+	if (!rb_is_attrset_id(mid)) {
+	    /* safe nav attr */
+	    mid = rb_id_attrset(mid);
+            else_label = qcall_branch_start(iseq, recv, &branches, node, line);
+	}
+	if (!popped) {
+	    ADD_INSN(ret, line, putnil);
 	    ADD_SEQ(ret, recv);
 	    ADD_SEQ(ret, args);
 
-	    if (flag & VM_CALL_ARGS_BLOCKARG_BIT) {
-		ADD_INSN1(ret, nd_line(node), topn, INT2FIX(1));
-		ADD_INSN1(ret, nd_line(node), setn, INT2FIX(FIX2INT(argc) + 3));
-		ADD_INSN (ret, nd_line(node), pop);
+	    if (flag & VM_CALL_ARGS_BLOCKARG) {
+		ADD_INSN1(ret, line, topn, INT2FIX(1));
+		if (flag & VM_CALL_ARGS_SPLAT) {
+		    ADD_INSN1(ret, line, putobject, INT2FIX(-1));
+                    ADD_SEND_WITH_FLAG(ret, line, idAREF, INT2FIX(1), INT2FIX(asgnflag));
+		}
+		ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 3));
+		ADD_INSN (ret, line, pop);
+	    }
+	    else if (flag & VM_CALL_ARGS_SPLAT) {
+		ADD_INSN(ret, line, dup);
+		ADD_INSN1(ret, line, putobject, INT2FIX(-1));
+                ADD_SEND_WITH_FLAG(ret, line, idAREF, INT2FIX(1), INT2FIX(asgnflag));
+		ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 2));
+		ADD_INSN (ret, line, pop);
 	    }
 	    else {
-	    ADD_INSN1(ret, nd_line(node), setn, INT2FIX(FIX2INT(argc) + 1));
-	}
+		ADD_INSN1(ret, line, setn, FIXNUM_INC(argc, 1));
+	    }
 	}
 	else {
 	    ADD_SEQ(ret, recv);
 	    ADD_SEQ(ret, args);
 	}
-	ADD_SEND_R(ret, nd_line(node), ID2SYM(node->nd_mid), argc, 0, LONG2FIX(flag));
-	ADD_INSN(ret, nd_line(node), pop);
+	ADD_SEND_WITH_FLAG(ret, line, mid, argc, INT2FIX(flag));
+        qcall_branch_end(iseq, ret, else_label, branches, node, line);
+	ADD_INSN(ret, line, pop);
 
 	break;
       }
-      case NODE_OPTBLOCK:{
-	/* for optimize */
-	LABEL *redo_label = NEW_LABEL(0);
-	LABEL *next_label = NEW_LABEL(0);
-
-	iseq->compile_data->start_label = next_label;
-	iseq->compile_data->redo_label = redo_label;
-
-	ADD_LABEL(ret, redo_label);
-	COMPILE_(ret, "optblock body", node->nd_head, 1 /* pop */ );
-	ADD_LABEL(ret, next_label);
-	ADD_INSN(ret, 0, opt_checkenv);
-	break;
-      }
-      case NODE_PRELUDE:{
-	COMPILE_POPED(ret, "prelude", node->nd_head);
-	COMPILE_(ret, "body", node->nd_body, poped);
-	break;
-      }
       case NODE_LAMBDA:{
 	/* compile same as lambda{...} */
-	VALUE block = NEW_CHILD_ISEQVAL(node->nd_body, make_name_for_block(iseq), ISEQ_TYPE_BLOCK);
+	const rb_iseq_t *block = NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq), ISEQ_TYPE_BLOCK, line);
 	VALUE argc = INT2FIX(0);
-	ADD_CALL_RECEIVER(ret, nd_line(node));
-	ADD_CALL_WITH_BLOCK(ret, nd_line(node), ID2SYM(idLambda), argc, block);
 
-	if (poped) {
-	    ADD_INSN(ret, nd_line(node), pop);
+	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+	ADD_CALL_WITH_BLOCK(ret, line, idLambda, argc, block);
+        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)block);
+
+	if (popped) {
+	    ADD_INSN(ret, line, pop);
 	}
 	break;
       }
       default:
-	rb_bug("iseq_compile_each: unknown node: %s", ruby_node_name(type));
-	return Qnil;
+	UNKNOWN_NODE("iseq_compile_each", node, COMPILE_NG);
+      ng:
+	debug_node_end();
+	return COMPILE_NG;
     }
 
     debug_node_end();
@@ -4930,21 +9000,34 @@ insn_data_length(INSN *iobj)
 static int
 calc_sp_depth(int depth, INSN *insn)
 {
-    return insn_stack_increase(depth, insn->insn_id, insn->operands);
+    return comptime_insn_stack_increase(depth, insn->insn_id, insn->operands);
 }
 
-static int
-insn_data_line_no(INSN *iobj)
+static VALUE
+opobj_inspect(VALUE obj)
 {
-    return insn_len(iobj->line_no);
+    if (!SPECIAL_CONST_P(obj) && !RBASIC_CLASS(obj)) {
+        switch (BUILTIN_TYPE(obj)) {
+	  case T_STRING:
+	    obj = rb_str_new_cstr(RSTRING_PTR(obj));
+	    break;
+	  case T_ARRAY:
+	    obj = rb_ary_dup(obj);
+	    break;
+          default:
+            break;
+	}
+    }
+    return rb_inspect(obj);
 }
 
+
+
 static VALUE
 insn_data_to_s_detail(INSN *iobj)
 {
-    VALUE str = rb_str_new(0, 0);
+    VALUE str = rb_sprintf("%-20s ", insn_name(iobj->insn_id));
 
-    str = rb_sprintf("%-16s", insn_name(iobj->insn_id));
     if (iobj->operands) {
 	const char *types = insn_op_types(iobj->insn_id);
 	int j;
@@ -4956,7 +9039,7 @@ insn_data_to_s_detail(INSN *iobj)
 	      case TS_OFFSET:	/* label(destination position) */
 		{
 		    LABEL *lobj = (LABEL *)OPERAND_AT(iobj, j);
-		    rb_str_catf(str, "<L%03d>", lobj->label_no);
+		    rb_str_catf(str, LABEL_FORMAT, lobj->label_no);
 		    break;
 		}
 		break;
@@ -4964,33 +9047,59 @@ insn_data_to_s_detail(INSN *iobj)
 		{
 		    rb_iseq_t *iseq = (rb_iseq_t *)OPERAND_AT(iobj, j);
 		    VALUE val = Qnil;
-		    if (iseq) {
-			val = iseq->self;
+		    if (0 && iseq) { /* TODO: invalidate now */
+			val = (VALUE)iseq;
 		    }
-		    rb_str_concat(str, rb_inspect(val));
+		    rb_str_concat(str, opobj_inspect(val));
 		}
 		break;
 	      case TS_LINDEX:
-	      case TS_DINDEX:
 	      case TS_NUM:	/* ulong */
 	      case TS_VALUE:	/* VALUE */
-		rb_str_concat(str, rb_inspect(OPERAND_AT(iobj, j)));
-		break;
+		{
+		    VALUE v = OPERAND_AT(iobj, j);
+                    if (!CLASS_OF(v))
+                        rb_str_cat2(str, "<hidden>");
+                    else {
+                        rb_str_concat(str, opobj_inspect(v));
+                    }
+		    break;
+		}
 	      case TS_ID:	/* ID */
-		rb_str_concat(str, rb_inspect(OPERAND_AT(iobj, j)));
+		rb_str_concat(str, opobj_inspect(OPERAND_AT(iobj, j)));
+		break;
+	      case TS_IC:	/* inline cache */
+	      case TS_IVC:	/* inline ivar cache */
+	      case TS_ISE:	/* inline storage entry */
+		rb_str_catf(str, "<ic:%d>", FIX2INT(OPERAND_AT(iobj, j)));
 		break;
-	      case TS_GENTRY:
+              case TS_CALLDATA: /* we store these as call infos at compile time */
 		{
-		    struct global_entry *entry = (struct global_entry *)
-		      (OPERAND_AT(iobj, j) & (~1));
-		    rb_str_cat2(str, rb_id2name(entry->id));
+                    const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(iobj, j);
+                    rb_str_cat2(str, "<calldata:");
+                    if (vm_ci_mid(ci)) rb_str_catf(str, "%"PRIsVALUE, rb_id2str(vm_ci_mid(ci)));
+                    rb_str_catf(str, ", %d>", vm_ci_argc(ci));
+		    break;
 		}
-	      case TS_IC:	/* method cache */
-		rb_str_cat2(str, "<ic>");
-		break;
 	      case TS_CDHASH:	/* case/when condition cache */
 		rb_str_cat2(str, "<ch>");
 		break;
+	      case TS_FUNCPTR:
+		{
+		    void *func = (void *)OPERAND_AT(iobj, j);
+#ifdef HAVE_DLADDR
+		    Dl_info info;
+		    if (dladdr(func, &info) && info.dli_sname) {
+			rb_str_cat2(str, info.dli_sname);
+			break;
+		    }
+#endif
+		    rb_str_catf(str, "<%p>", func);
+		}
+		break;
+              case TS_BUILTIN:
+                rb_str_cat2(str, "<TS_BUILTIN>");
+                break;
 	      default:{
 		rb_raise(rb_eSyntaxError, "unknown operand type: %c", type);
 	      }
@@ -5004,7 +9113,13 @@ insn_data_to_s_detail(INSN *iobj)
 }
 
 static void
-dump_disasm_list(struct iseq_link_element *link)
+dump_disasm_list(const LINK_ELEMENT *link)
+{
+    dump_disasm_list_with_cursor(link, NULL, NULL);
+}
+
+static void
+dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr, const LABEL *dest)
 {
     int pos = 0;
     INSN *iobj;
@@ -5014,31 +9129,33 @@ dump_disasm_list(struct iseq_link_element *link)
     printf("-- raw disasm--------\n");
 
     while (link) {
+	if (curr) printf(curr == link ? "*" : " ");
 	switch (link->type) {
 	  case ISEQ_ELEMENT_INSN:
 	    {
 		iobj = (INSN *)link;
 		str = insn_data_to_s_detail(iobj);
-		printf("%04d %-65s(%4d)\n", pos, StringValueCStr(str),
-		       insn_data_line_no(iobj));
+		printf("  %04d %-65s(%4u)\n", pos, StringValueCStr(str), iobj->insn_info.line_no);
 		pos += insn_data_length(iobj);
 		break;
 	    }
 	  case ISEQ_ELEMENT_LABEL:
 	    {
 		lobj = (LABEL *)link;
-		printf("<L%03d>\n", lobj->label_no);
+		printf(LABEL_FORMAT" [sp: %d]%s\n", lobj->label_no, lobj->sp,
+		       dest == lobj ? " <---" : "");
 		break;
 	    }
-	  case ISEQ_ELEMENT_NONE:
+	  case ISEQ_ELEMENT_TRACE:
 	    {
-		printf("[none]\n");
+		TRACE *trace = (TRACE *)link;
+		printf("  trace: %0x\n", trace->event);
 		break;
 	    }
 	  case ISEQ_ELEMENT_ADJUST:
 	    {
 		ADJUST *adjust = (ADJUST *)link;
-		printf("adjust: [label: %d]\n", adjust->label->label_no);
+		printf("  adjust: [label: %d]\n", adjust->label ? adjust->label->label_no : -1);
 		break;
 	    }
 	  default:
@@ -5048,15 +9165,22 @@ dump_disasm_list(struct iseq_link_element *link)
 	link = link->next;
     }
     printf("---------------------\n");
+    fflush(stdout);
+}
+
+const char *
+rb_insns_name(int i)
+{
+    return insn_name(i);
 }
 
 VALUE
 rb_insns_name_array(void)
 {
-    VALUE ary = rb_ary_new();
+    VALUE ary = rb_ary_new_capa(VM_INSTRUCTION_SIZE);
     int i;
-    for (i = 0; i < sizeof(insn_name_info) / sizeof(insn_name_info[0]); i++) {
-	rb_ary_push(ary, rb_obj_freeze(rb_str_new2(insn_name_info[i])));
+    for (i = 0; i < VM_INSTRUCTION_SIZE; i++) {
+	rb_ary_push(ary, rb_fstring_cstr(insn_name(i)));
     }
     return rb_obj_freeze(ary);
 }
@@ -5066,7 +9190,7 @@ register_label(rb_iseq_t *iseq, struct st_table *labels_table, VALUE obj)
 {
     LABEL *label = 0;
     st_data_t tmp;
-    obj = rb_convert_type(obj, T_SYMBOL, "Symbol", "to_sym");
+    obj = rb_to_symbol_type(obj);
 
     if (st_lookup(labels_table, obj, &tmp) == 0) {
 	label = NEW_LABEL(0);
@@ -5075,68 +9199,76 @@ register_label(rb_iseq_t *iseq, struct st_table *labels_table, VALUE obj)
     else {
 	label = (LABEL *)tmp;
     }
+    LABEL_REF(label);
     return label;
 }
 
 static VALUE
 get_exception_sym2type(VALUE sym)
 {
-#undef rb_intern
-#define rb_intern(str) rb_intern_const(str)
     static VALUE symRescue, symEnsure, symRetry;
     static VALUE symBreak, symRedo, symNext;
 
     if (symRescue == 0) {
-	symRescue = ID2SYM(rb_intern("rescue"));
-	symEnsure = ID2SYM(rb_intern("ensure"));
-	symRetry  = ID2SYM(rb_intern("retry"));
-	symBreak  = ID2SYM(rb_intern("break"));
-	symRedo   = ID2SYM(rb_intern("redo"));
-	symNext   = ID2SYM(rb_intern("next"));
+	symRescue = ID2SYM(rb_intern_const("rescue"));
+	symEnsure = ID2SYM(rb_intern_const("ensure"));
+	symRetry  = ID2SYM(rb_intern_const("retry"));
+	symBreak  = ID2SYM(rb_intern_const("break"));
+	symRedo   = ID2SYM(rb_intern_const("redo"));
+	symNext   = ID2SYM(rb_intern_const("next"));
     }
 
     if (sym == symRescue) return CATCH_TYPE_RESCUE;
     if (sym == symEnsure) return CATCH_TYPE_ENSURE;
     if (sym == symRetry)  return CATCH_TYPE_RETRY;
     if (sym == symBreak)  return CATCH_TYPE_BREAK;
-    if (sym == symRedo)   return  CATCH_TYPE_REDO;
+    if (sym == symRedo)   return CATCH_TYPE_REDO;
     if (sym == symNext)   return CATCH_TYPE_NEXT;
-    rb_raise(rb_eSyntaxError, "invalid exception symbol: %s",
-	     RSTRING_PTR(rb_inspect(sym)));
+    rb_raise(rb_eSyntaxError, "invalid exception symbol: %+"PRIsVALUE, sym);
     return 0;
 }
 
 static int
-iseq_build_exception(rb_iseq_t *iseq, struct st_table *labels_table,
+iseq_build_from_ary_exception(rb_iseq_t *iseq, struct st_table *labels_table,
 		     VALUE exception)
 {
     int i;
 
     for (i=0; i<RARRAY_LEN(exception); i++) {
-	VALUE v, type, *ptr, eiseqval;
+	const rb_iseq_t *eiseq;
+	VALUE v, type;
 	LABEL *lstart, *lend, *lcont;
-	int sp;
+	unsigned int sp;
 
-	RB_GC_GUARD(v) = rb_convert_type(RARRAY_PTR(exception)[i], T_ARRAY,
-					 "Array", "to_ary");
+	v = rb_to_array_type(RARRAY_AREF(exception, i));
 	if (RARRAY_LEN(v) != 6) {
 	    rb_raise(rb_eSyntaxError, "wrong exception entry");
 	}
-	ptr  = RARRAY_PTR(v);
-	type = get_exception_sym2type(ptr[0]);
-	if (ptr[1] == Qnil) {
-	    eiseqval = 0;
+        type = get_exception_sym2type(RARRAY_AREF(v, 0));
+        if (RARRAY_AREF(v, 1) == Qnil) {
+	    eiseq = NULL;
 	}
 	else {
-	    eiseqval = ruby_iseq_load(ptr[1], iseq->self, Qnil);
+            eiseq = rb_iseqw_to_iseq(rb_iseq_load(RARRAY_AREF(v, 1), (VALUE)iseq, Qnil));
+        }
+
+        lstart = register_label(iseq, labels_table, RARRAY_AREF(v, 2));
+        lend   = register_label(iseq, labels_table, RARRAY_AREF(v, 3));
+        lcont  = register_label(iseq, labels_table, RARRAY_AREF(v, 4));
+        sp     = NUM2UINT(RARRAY_AREF(v, 5));
+
+	/* TODO: Dirty Hack!  Fix me */
+	if (type == CATCH_TYPE_RESCUE ||
+	    type == CATCH_TYPE_BREAK ||
+	    type == CATCH_TYPE_NEXT) {
+	    ++sp;
 	}
 
-	lstart = register_label(iseq, labels_table, ptr[2]);
-	lend   = register_label(iseq, labels_table, ptr[3]);
-	lcont  = register_label(iseq, labels_table, ptr[4]);
-	sp     = NUM2INT(ptr[5]);
+	lcont->sp = sp;
 
-	ADD_CATCH_ENTRY(type, lstart, lend, eiseqval, lcont);
+	ADD_CATCH_ENTRY(type, lstart, lend, eiseq, lcont);
+
+	RB_GC_GUARD(v);
     }
     return COMPILE_OK;
 }
@@ -5146,24 +9278,99 @@ insn_make_insn_table(void)
 {
     struct st_table *table;
     int i;
-    table = st_init_numtable();
+    table = st_init_numtable_with_size(VM_INSTRUCTION_SIZE);
 
     for (i=0; i<VM_INSTRUCTION_SIZE; i++) {
-	st_insert(table, ID2SYM(rb_intern(insn_name(i))), i);
+	st_insert(table, ID2SYM(rb_intern_const(insn_name(i))), i);
     }
 
     return table;
 }
 
+static const rb_iseq_t *
+iseq_build_load_iseq(const rb_iseq_t *iseq, VALUE op)
+{
+    VALUE iseqw;
+    const rb_iseq_t *loaded_iseq;
+
+    if (RB_TYPE_P(op, T_ARRAY)) {
+	iseqw = rb_iseq_load(op, (VALUE)iseq, Qnil);
+    }
+    else if (CLASS_OF(op) == rb_cISeq) {
+	iseqw = op;
+    }
+    else {
+	rb_raise(rb_eSyntaxError, "ISEQ is required");
+    }
+
+    loaded_iseq = rb_iseqw_to_iseq(iseqw);
+    return loaded_iseq;
+}
+
+static VALUE
+iseq_build_callinfo_from_hash(rb_iseq_t *iseq, VALUE op)
+{
+    ID mid = 0;
+    int orig_argc = 0;
+    unsigned int flag = 0;
+    struct rb_callinfo_kwarg *kw_arg = 0;
+
+    if (!NIL_P(op)) {
+	VALUE vmid = rb_hash_aref(op, ID2SYM(rb_intern_const("mid")));
+	VALUE vflag = rb_hash_aref(op, ID2SYM(rb_intern_const("flag")));
+	VALUE vorig_argc = rb_hash_aref(op, ID2SYM(rb_intern_const("orig_argc")));
+	VALUE vkw_arg = rb_hash_aref(op, ID2SYM(rb_intern_const("kw_arg")));
+
+	if (!NIL_P(vmid)) mid = SYM2ID(vmid);
+	if (!NIL_P(vflag)) flag = NUM2UINT(vflag);
+	if (!NIL_P(vorig_argc)) orig_argc = FIX2INT(vorig_argc);
+
+	if (!NIL_P(vkw_arg)) {
+	    int i;
+	    int len = RARRAY_LENINT(vkw_arg);
+	    size_t n = rb_callinfo_kwarg_bytes(len);
+
+	    kw_arg = xmalloc(n);
+	    kw_arg->keyword_len = len;
+	    for (i = 0; i < len; i++) {
+		VALUE kw = RARRAY_AREF(vkw_arg, i);
+		SYM2ID(kw);	/* make immortal */
+		kw_arg->keywords[i] = kw;
+	    }
+	}
+    }
+
+    const struct rb_callinfo *ci = new_callinfo(iseq, mid, orig_argc, flag, kw_arg, (flag & VM_CALL_ARGS_SIMPLE) == 0);
+    RB_OBJ_WRITTEN(iseq, Qundef, ci);
+    return (VALUE)ci;
+}
+
+static rb_event_flag_t
+event_name_to_flag(VALUE sym)
+{
+#define CHECK_EVENT(ev) if (sym == ID2SYM(rb_intern_const(#ev))) return ev;
+		CHECK_EVENT(RUBY_EVENT_LINE);
+		CHECK_EVENT(RUBY_EVENT_CLASS);
+		CHECK_EVENT(RUBY_EVENT_END);
+		CHECK_EVENT(RUBY_EVENT_CALL);
+		CHECK_EVENT(RUBY_EVENT_RETURN);
+		CHECK_EVENT(RUBY_EVENT_B_CALL);
+		CHECK_EVENT(RUBY_EVENT_B_RETURN);
+#undef CHECK_EVENT
+    return RUBY_EVENT_NONE;
+}
+
 static int
-iseq_build_body(rb_iseq_t *iseq, LINK_ANCHOR *anchor,
-		VALUE body, struct st_table *labels_table)
+iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
+			 VALUE body, VALUE labels_wrapper)
 {
-    /* TODO: body should be freezed */
-    VALUE *ptr = RARRAY_PTR(body);
-    int len = RARRAY_LEN(body);
-    int i, j;
+    /* TODO: body should be frozen */
+    long i, len = RARRAY_LEN(body);
+    struct st_table *labels_table = DATA_PTR(labels_wrapper);
+    int j;
     int line_no = 0;
+    int ret = COMPILE_OK;
+
     /*
      * index -> LABEL *label
      */
@@ -5174,235 +9381,427 @@ iseq_build_body(rb_iseq_t *iseq, LINK_ANCHOR *anchor,
     }
 
     for (i=0; i<len; i++) {
-	VALUE obj = ptr[i];
+        VALUE obj = RARRAY_AREF(body, i);
 
 	if (SYMBOL_P(obj)) {
-	    LABEL *label = register_label(iseq, labels_table, obj);
-	    ADD_LABEL(anchor, label);
+	    rb_event_flag_t event;
+	    if ((event = event_name_to_flag(obj)) != RUBY_EVENT_NONE) {
+		ADD_TRACE(anchor, event);
+	    }
+	    else {
+		LABEL *label = register_label(iseq, labels_table, obj);
+		ADD_LABEL(anchor, label);
+	    }
 	}
 	else if (FIXNUM_P(obj)) {
 	    line_no = NUM2INT(obj);
 	}
-	else if (TYPE(obj) == T_ARRAY) {
+	else if (RB_TYPE_P(obj, T_ARRAY)) {
 	    VALUE *argv = 0;
-	    int argc = RARRAY_LEN(obj) - 1;
-	    VALUE insn_id;
+	    int argc = RARRAY_LENINT(obj) - 1;
+	    st_data_t insn_id;
 	    VALUE insn;
 
-	    insn = (argc < 0) ? Qnil : RARRAY_PTR(obj)[0];
-	    if (st_lookup(insn_table, insn, &insn_id) == 0) {
+	    insn = (argc < 0) ? Qnil : RARRAY_AREF(obj, 0);
+	    if (st_lookup(insn_table, (st_data_t)insn, &insn_id) == 0) {
 		/* TODO: exception */
-		RB_GC_GUARD(insn) = rb_inspect(insn);
-		rb_compile_error(RSTRING_PTR(iseq->filename), line_no,
-				 "unknown instruction: %s", RSTRING_PTR(insn));
+		COMPILE_ERROR(iseq, line_no,
+			      "unknown instruction: %+"PRIsVALUE, insn);
+		ret = COMPILE_NG;
+		break;
 	    }
 
-	    if (argc != insn_len(insn_id)-1) {
-		rb_compile_error(RSTRING_PTR(iseq->filename), line_no,
-				 "operand size mismatch");
+	    if (argc != insn_len((VALUE)insn_id)-1) {
+		COMPILE_ERROR(iseq, line_no,
+			      "operand size mismatch");
+		ret = COMPILE_NG;
+		break;
 	    }
 
 	    if (argc > 0) {
-		argv = compile_data_alloc(iseq, sizeof(VALUE) * argc);
+                argv = compile_data_calloc2(iseq, sizeof(VALUE), argc);
+
+                // add element before operand setup to make GC root
+                ADD_ELEM(anchor,
+                         (LINK_ELEMENT*)new_insn_core(iseq, line_no,
+                                                      (enum ruby_vminsn_type)insn_id, argc, argv));
+
 		for (j=0; j<argc; j++) {
 		    VALUE op = rb_ary_entry(obj, j+1);
-		    switch (insn_op_type(insn_id, j)) {
+		    switch (insn_op_type((VALUE)insn_id, j)) {
 		      case TS_OFFSET: {
 			LABEL *label = register_label(iseq, labels_table, op);
 			argv[j] = (VALUE)label;
 			break;
 		      }
 		      case TS_LINDEX:
-		      case TS_DINDEX:
 		      case TS_NUM:
 			(void)NUM2INT(op);
 			argv[j] = op;
 			break;
 		      case TS_VALUE:
 			argv[j] = op;
-			iseq_add_mark_object(iseq, op);
+			RB_OBJ_WRITTEN(iseq, Qundef, op);
 			break;
 		      case TS_ISEQ:
 			{
 			    if (op != Qnil) {
-				if (TYPE(op) == T_ARRAY) {
-				    argv[j] = ruby_iseq_load(op, iseq->self, Qnil);
-				}
-				else if (CLASS_OF(op) == rb_cISeq) {
-				    argv[j] = op;
-				}
-				else {
-				    rb_raise(rb_eSyntaxError, "ISEQ is required");
-				}
-				iseq_add_mark_object(iseq, argv[j]);
+				VALUE v = (VALUE)iseq_build_load_iseq(iseq, op);
+				argv[j] = v;
+				RB_OBJ_WRITTEN(iseq, Qundef, v);
 			    }
 			    else {
 				argv[j] = 0;
 			    }
 			}
 			break;
-		      case TS_GENTRY:
-			op = rb_convert_type(op, T_SYMBOL, "Symbol", "to_sym");
-			argv[j] = (VALUE)rb_global_entry(SYM2ID(op));
-			break;
+		      case TS_ISE:
 		      case TS_IC:
-			argv[j] = (VALUE)NEW_INLINE_CACHE_ENTRY();
-			iseq_add_mark_object(iseq, argv[j]);
+                      case TS_IVC:  /* inline ivar cache */
+			argv[j] = op;
+			if (NUM2UINT(op) >= iseq->body->is_size) {
+			    iseq->body->is_size = NUM2INT(op) + 1;
+			}
+                        FL_SET((VALUE)iseq, ISEQ_MARKABLE_ISEQ);
+			break;
+                      case TS_CALLDATA:
+			argv[j] = iseq_build_callinfo_from_hash(iseq, op);
 			break;
 		      case TS_ID:
-			argv[j] = rb_convert_type(op, T_SYMBOL,
-						  "Symbol", "to_sym");
+			argv[j] = rb_to_symbol_type(op);
 			break;
 		      case TS_CDHASH:
 			{
 			    int i;
-			    op = rb_convert_type(op, T_ARRAY, "Array", "to_ary");
-			    op = rb_ary_dup(op);
+			    VALUE map = rb_hash_new_with_size(RARRAY_LEN(op)/2);
+
+                            RHASH_TBL_RAW(map)->type = &cdhash_type;
+			    op = rb_to_array_type(op);
 			    for (i=0; i<RARRAY_LEN(op); i+=2) {
-				VALUE sym = rb_ary_entry(op, i+1);
+				VALUE key = RARRAY_AREF(op, i);
+				VALUE sym = RARRAY_AREF(op, i+1);
 				LABEL *label =
 				  register_label(iseq, labels_table, sym);
-				rb_ary_store(op, i+1, (VALUE)label | 1);
+				rb_hash_aset(map, key, (VALUE)label | 1);
 			    }
-			    argv[j] = op;
+			    RB_GC_GUARD(op);
+			    argv[j] = map;
+			    RB_OBJ_WRITTEN(iseq, Qundef, map);
+			}
+			break;
+		      case TS_FUNCPTR:
+			{
+#if SIZEOF_VALUE <= SIZEOF_LONG
+			    long funcptr = NUM2LONG(op);
+#else
+			    LONG_LONG funcptr = NUM2LL(op);
+#endif
+			    argv[j] = (VALUE)funcptr;
 			}
 			break;
 		      default:
-			rb_raise(rb_eSyntaxError, "unknown operand: %c", insn_op_type(insn_id, j));
+			rb_raise(rb_eSyntaxError, "unknown operand: %c", insn_op_type((VALUE)insn_id, j));
 		    }
 		}
 	    }
-	    ADD_ELEM(anchor,
-		     (LINK_ELEMENT*)new_insn_core(iseq, line_no,
-						  insn_id, argc, argv));
+            else {
+                ADD_ELEM(anchor,
+                         (LINK_ELEMENT*)new_insn_core(iseq, line_no,
+                                                      (enum ruby_vminsn_type)insn_id, argc, NULL));
+            }
 	}
 	else {
 	    rb_raise(rb_eTypeError, "unexpected object for instruction");
 	}
     }
-    st_free_table(labels_table);
-    iseq_setup(iseq, anchor);
-    return COMPILE_OK;
+    DATA_PTR(labels_wrapper) = 0;
+    validate_labels(iseq, labels_table);
+    if (!ret) return ret;
+    return iseq_setup(iseq, anchor);
 }
 
-#define CHECK_ARRAY(v)   rb_convert_type(v, T_ARRAY, "Array", "to_ary")
-#define CHECK_STRING(v)  rb_convert_type(v, T_STRING, "String", "to_str")
-#define CHECK_SYMBOL(v)  rb_convert_type(v, T_SYMBOL, "Symbol", "to_sym")
-static inline VALUE CHECK_INTEGER(VALUE v) {NUM2LONG(v); return v;}
+#define CHECK_ARRAY(v)   rb_to_array_type(v)
+#define CHECK_SYMBOL(v)  rb_to_symbol_type(v)
 
-VALUE
-rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE locals, VALUE args,
+static int
+int_param(int *dst, VALUE param, VALUE sym)
+{
+    VALUE val = rb_hash_aref(param, sym);
+    if (FIXNUM_P(val)) {
+	*dst = FIX2INT(val);
+	return TRUE;
+    }
+    else if (!NIL_P(val)) {
+	rb_raise(rb_eTypeError, "invalid %+"PRIsVALUE" Fixnum: %+"PRIsVALUE,
+		 sym, val);
+    }
+    return FALSE;
+}
+
+static const struct rb_iseq_param_keyword *
+iseq_build_kw(rb_iseq_t *iseq, VALUE params, VALUE keywords)
+{
+    int i, j;
+    int len = RARRAY_LENINT(keywords);
+    int default_len;
+    VALUE key, sym, default_val;
+    VALUE *dvs;
+    ID *ids;
+    struct rb_iseq_param_keyword *keyword = ZALLOC(struct rb_iseq_param_keyword);
+
+    iseq->body->param.flags.has_kw = TRUE;
+
+    keyword->num = len;
+#define SYM(s) ID2SYM(rb_intern_const(#s))
+    (void)int_param(&keyword->bits_start, params, SYM(kwbits));
+    i = keyword->bits_start - keyword->num;
+    ids = (ID *)&iseq->body->local_table[i];
+#undef SYM
+
+    /* required args */
+    for (i = 0; i < len; i++) {
+	VALUE val = RARRAY_AREF(keywords, i);
+
+	if (!SYMBOL_P(val)) {
+	    goto default_values;
+	}
+	ids[i] = SYM2ID(val);
+	keyword->required_num++;
+    }
+
+  default_values: /* note: we intentionally preserve `i' from previous loop */
+    default_len = len - i;
+    if (default_len == 0) {
+	keyword->table = ids;
+	return keyword;
+    }
+    else if (default_len < 0) {
+        UNREACHABLE;
+    }
+
+    dvs = ALLOC_N(VALUE, (unsigned int)default_len);
+
+    for (j = 0; i < len; i++, j++) {
+	key = RARRAY_AREF(keywords, i);
+	CHECK_ARRAY(key);
+
+	switch (RARRAY_LEN(key)) {
+	  case 1:
+	    sym = RARRAY_AREF(key, 0);
+	    default_val = Qundef;
+	    break;
+	  case 2:
+	    sym = RARRAY_AREF(key, 0);
+	    default_val = RARRAY_AREF(key, 1);
+	    break;
+	  default:
+	    rb_raise(rb_eTypeError, "keyword default has unsupported len %+"PRIsVALUE, key);
+	}
+	ids[i] = SYM2ID(sym);
+	dvs[j] = default_val;
+    }
+
+    keyword->table = ids;
+    keyword->default_values = dvs;
+
+    return keyword;
+}
+
+void
+rb_iseq_mark_insn_storage(struct iseq_compile_data_storage *storage)
+{
+    INSN *iobj = 0;
+    size_t size = sizeof(INSN);
+    unsigned int pos = 0;
+
+    while (storage) {
+#ifdef STRICT_ALIGNMENT
+        size_t padding = calc_padding((void *)&storage->buff[pos], size);
+#else
+        const size_t padding = 0; /* expected to be optimized by compiler */
+#endif /* STRICT_ALIGNMENT */
+        size_t offset = pos + size + padding;
+        if (offset > storage->size || offset > storage->pos) {
+            pos = 0;
+            storage = storage->next;
+        }
+        else {
+#ifdef STRICT_ALIGNMENT
+            pos += (int)padding;
+#endif /* STRICT_ALIGNMENT */
+
+            iobj = (INSN *)&storage->buff[pos];
+
+            if (iobj->operands) {
+                int j;
+                const char *types = insn_op_types(iobj->insn_id);
+
+                for (j = 0; types[j]; j++) {
+                    char type = types[j];
+                    switch (type) {
+                      case TS_CDHASH:
+                      case TS_ISEQ:
+                      case TS_VALUE:
+                      case TS_CALLDATA: // ci is stored.
+                        {
+                            VALUE op = OPERAND_AT(iobj, j);
+
+                            if (!SPECIAL_CONST_P(op)) {
+                                rb_gc_mark(op);
+                            }
+                        }
+                        break;
+                      default:
+                        break;
+                    }
+                }
+            }
+            pos += (int)size;
+        }
+    }
+}
+
+void
+rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE misc, VALUE locals, VALUE params,
 			 VALUE exception, VALUE body)
 {
-    int i;
+#define SYM(s) ID2SYM(rb_intern_const(#s))
+    int i, len;
+    unsigned int arg_size, local_size, stack_max;
     ID *tbl;
     struct st_table *labels_table = st_init_numtable();
-
+    VALUE labels_wrapper = Data_Wrap_Struct(0, rb_mark_set, st_free_table, labels_table);
+    VALUE arg_opt_labels = rb_hash_aref(params, SYM(opt));
+    VALUE keywords = rb_hash_aref(params, SYM(keyword));
+    VALUE sym_arg_rest = ID2SYM(rb_intern_const("#arg_rest"));
     DECL_ANCHOR(anchor);
-
     INIT_ANCHOR(anchor);
 
-    iseq->local_table_size = RARRAY_LEN(locals);
-    iseq->local_table = tbl = (ID *)ALLOC_N(ID *, iseq->local_table_size);
-    iseq->local_size = iseq->local_table_size + 1;
+    len = RARRAY_LENINT(locals);
+    iseq->body->local_table_size = len;
+    iseq->body->local_table = tbl = len > 0 ? (ID *)ALLOC_N(ID, iseq->body->local_table_size) : NULL;
 
-    for (i=0; i<RARRAY_LEN(locals); i++) {
-	VALUE lv = RARRAY_PTR(locals)[i];
-	tbl[i] = FIXNUM_P(lv) ? FIX2INT(lv) : SYM2ID(CHECK_SYMBOL(lv));
-    }
+    for (i = 0; i < len; i++) {
+	VALUE lv = RARRAY_AREF(locals, i);
 
-    /* args */
-    if (FIXNUM_P(args)) {
-	iseq->arg_size = iseq->argc = FIX2INT(args);
-	iseq->arg_simple = 1;
-    }
-    else {
-	int i = 0;
-	VALUE argc = CHECK_INTEGER(rb_ary_entry(args, i++));
-	VALUE arg_opt_labels = CHECK_ARRAY(rb_ary_entry(args, i++));
-	VALUE arg_post_len = CHECK_INTEGER(rb_ary_entry(args, i++));
-	VALUE arg_post_start = CHECK_INTEGER(rb_ary_entry(args, i++));
-	VALUE arg_rest = CHECK_INTEGER(rb_ary_entry(args, i++));
-	VALUE arg_block = CHECK_INTEGER(rb_ary_entry(args, i++));
-	VALUE arg_simple = CHECK_INTEGER(rb_ary_entry(args, i++));
-
-	iseq->argc = FIX2INT(argc);
-	iseq->arg_rest = FIX2INT(arg_rest);
-	iseq->arg_post_len = FIX2INT(arg_post_len);
-	iseq->arg_post_start = FIX2INT(arg_post_start);
-	iseq->arg_block = FIX2INT(arg_block);
-	iseq->arg_opts = RARRAY_LEN(arg_opt_labels);
-	iseq->arg_opt_table = (VALUE *)ALLOC_N(VALUE, iseq->arg_opts);
-
-	if (iseq->arg_block != -1) {
-	    iseq->arg_size = iseq->arg_block + 1;
-	}
-	else if (iseq->arg_post_len) {
-	    iseq->arg_size = iseq->arg_post_start + iseq->arg_post_len;
-	}
-	else if (iseq->arg_rest != -1) {
-	    iseq->arg_size = iseq->arg_rest + 1;
+	if (sym_arg_rest == lv) {
+	    tbl[i] = 0;
 	}
 	else {
-	    iseq->arg_size = iseq->argc + (iseq->arg_opts ? iseq->arg_opts - 1 : 0);
+	    tbl[i] = FIXNUM_P(lv) ? (ID)FIX2LONG(lv) : SYM2ID(CHECK_SYMBOL(lv));
 	}
+    }
+
+#define INT_PARAM(F) int_param(&iseq->body->param.F, params, SYM(F))
+    if (INT_PARAM(lead_num)) {
+	iseq->body->param.flags.has_lead = TRUE;
+    }
+    if (INT_PARAM(post_num)) iseq->body->param.flags.has_post = TRUE;
+    if (INT_PARAM(post_start)) iseq->body->param.flags.has_post = TRUE;
+    if (INT_PARAM(rest_start)) iseq->body->param.flags.has_rest = TRUE;
+    if (INT_PARAM(block_start)) iseq->body->param.flags.has_block = TRUE;
+#undef INT_PARAM
+    {
+#define INT_PARAM(F) F = (int_param(&x, misc, SYM(F)) ? (unsigned int)x : 0)
+	int x;
+	INT_PARAM(arg_size);
+	INT_PARAM(local_size);
+	INT_PARAM(stack_max);
+#undef INT_PARAM
+    }
 
-	for (i=0; i<RARRAY_LEN(arg_opt_labels); i++) {
-	    iseq->arg_opt_table[i] =
-	      (VALUE)register_label(iseq, labels_table,
-				    rb_ary_entry(arg_opt_labels, i));
+    if (RB_TYPE_P(arg_opt_labels, T_ARRAY)) {
+	len = RARRAY_LENINT(arg_opt_labels);
+	iseq->body->param.flags.has_opt = !!(len - 1 >= 0);
+
+	if (iseq->body->param.flags.has_opt) {
+	    VALUE *opt_table = ALLOC_N(VALUE, len);
+
+	    for (i = 0; i < len; i++) {
+		VALUE ent = RARRAY_AREF(arg_opt_labels, i);
+		LABEL *label = register_label(iseq, labels_table, ent);
+		opt_table[i] = (VALUE)label;
+	    }
+
+	    iseq->body->param.opt_num = len - 1;
+	    iseq->body->param.opt_table = opt_table;
 	}
+    }
+    else if (!NIL_P(arg_opt_labels)) {
+	rb_raise(rb_eTypeError, ":opt param is not an array: %+"PRIsVALUE,
+		 arg_opt_labels);
+    }
+
+    if (RB_TYPE_P(keywords, T_ARRAY)) {
+	iseq->body->param.keyword = iseq_build_kw(iseq, params, keywords);
+    }
+    else if (!NIL_P(keywords)) {
+	rb_raise(rb_eTypeError, ":keywords param is not an array: %+"PRIsVALUE,
+		 keywords);
+    }
+
+    if (Qtrue == rb_hash_aref(params, SYM(ambiguous_param0))) {
+	iseq->body->param.flags.ambiguous_param0 = TRUE;
+    }
 
-	iseq->arg_simple = NUM2INT(arg_simple);
+    if (int_param(&i, params, SYM(kwrest))) {
+	struct rb_iseq_param_keyword *keyword = (struct rb_iseq_param_keyword *)iseq->body->param.keyword;
+	if (keyword == NULL) {
+	    iseq->body->param.keyword = keyword = ZALLOC(struct rb_iseq_param_keyword);
+	}
+	keyword->rest_start = i;
+	iseq->body->param.flags.has_kwrest = TRUE;
     }
+#undef SYM
+    iseq_calc_param_size(iseq);
 
     /* exception */
-    iseq_build_exception(iseq, labels_table, exception);
+    iseq_build_from_ary_exception(iseq, labels_table, exception);
 
     /* body */
-    iseq_build_body(iseq, anchor, body, labels_table);
-    return iseq->self;
+    iseq_build_from_ary_body(iseq, anchor, body, labels_wrapper);
+
+    iseq->body->param.size = arg_size;
+    iseq->body->local_table_size = local_size;
+    iseq->body->stack_max = stack_max;
 }
 
 /* for parser */
 
 int
-rb_dvar_defined(ID id)
+rb_dvar_defined(ID id, const rb_iseq_t *iseq)
 {
-    rb_thread_t *th = GET_THREAD();
-    rb_iseq_t *iseq;
-    if (th->base_block && (iseq = th->base_block->iseq)) {
-	while (iseq->type == ISEQ_TYPE_BLOCK ||
-	       iseq->type == ISEQ_TYPE_RESCUE ||
-	       iseq->type == ISEQ_TYPE_ENSURE ||
-	       iseq->type == ISEQ_TYPE_EVAL ||
-	       iseq->type == ISEQ_TYPE_MAIN
+    if (iseq) {
+	const struct rb_iseq_constant_body *body = iseq->body;
+	while (body->type == ISEQ_TYPE_BLOCK ||
+	       body->type == ISEQ_TYPE_RESCUE ||
+	       body->type == ISEQ_TYPE_ENSURE ||
+	       body->type == ISEQ_TYPE_EVAL ||
+	       body->type == ISEQ_TYPE_MAIN
 	       ) {
-	    int i;
+	    unsigned int i;
 
-	    for (i = 0; i < iseq->local_table_size; i++) {
-		if (iseq->local_table[i] == id) {
+	    for (i = 0; i < body->local_table_size; i++) {
+		if (body->local_table[i] == id) {
 		    return 1;
 		}
 	    }
-	    iseq = iseq->parent_iseq;
+	    iseq = body->parent_iseq;
+	    body = iseq->body;
 	}
     }
     return 0;
 }
 
 int
-rb_local_defined(ID id)
+rb_local_defined(ID id, const rb_iseq_t *iseq)
 {
-    rb_thread_t *th = GET_THREAD();
-    rb_iseq_t *iseq;
+    if (iseq) {
+	unsigned int i;
+	const struct rb_iseq_constant_body *const body = iseq->body->local_iseq->body;
 
-    if (th->base_block && th->base_block->iseq) {
-	int i;
-	iseq = th->base_block->iseq->local_iseq;
-
-	for (i=0; i<iseq->local_table_size; i++) {
-	    if (iseq->local_table[i] == id) {
+	for (i=0; i<body->local_table_size; i++) {
+	    if (body->local_table[i] == id) {
 		return 1;
 	    }
 	}
@@ -5410,14 +9809,2366 @@ rb_local_defined(ID id)
     return 0;
 }
 
-int
-rb_parse_in_eval(void)
+static int
+caller_location(VALUE *path, VALUE *realpath)
 {
-    return GET_THREAD()->parse_in_eval != 0;
+    const rb_execution_context_t *ec = GET_EC();
+    const rb_control_frame_t *const cfp =
+        rb_vm_get_ruby_level_next_cfp(ec, ec->cfp);
+
+    if (cfp) {
+	int line = rb_vm_get_sourceline(cfp);
+	*path = rb_iseq_path(cfp->iseq);
+	*realpath = rb_iseq_realpath(cfp->iseq);
+	return line;
+    }
+    else {
+	*path = rb_fstring_lit("<compiled>");
+	*realpath = *path;
+	return 1;
+    }
 }
 
-int
-rb_parse_in_main(void)
+typedef struct {
+    VALUE arg;
+    VALUE func;
+    int line;
+} accessor_args;
+
+static const rb_iseq_t *
+method_for_self(VALUE name, VALUE arg, const struct rb_builtin_function *func,
+                void (*build)(rb_iseq_t *, LINK_ANCHOR *, const void *))
+{
+    VALUE path, realpath;
+    accessor_args acc;
+
+    acc.arg = arg;
+    acc.func = (VALUE)func;
+    acc.line = caller_location(&path, &realpath);
+    struct rb_iseq_new_with_callback_callback_func *ifunc =
+        rb_iseq_new_with_callback_new_callback(build, &acc);
+    return rb_iseq_new_with_callback(ifunc,
+			     rb_sym2str(name), path, realpath,
+			     INT2FIX(acc.line), 0, ISEQ_TYPE_METHOD, 0);
+}
+
+static void
+for_self_aref(rb_iseq_t *iseq, LINK_ANCHOR *ret, const void *a)
+{
+    const accessor_args *const args = (void *)a;
+    const int line = args->line;
+    struct rb_iseq_constant_body *const body = iseq->body;
+
+    iseq_set_local_table(iseq, 0);
+    body->param.lead_num = 0;
+    body->param.size = 0;
+
+    ADD_INSN1(ret, line, putobject, args->arg);
+    ADD_INSN1(ret, line, invokebuiltin, args->func);
+}
+
+static void
+for_self_aset(rb_iseq_t *iseq, LINK_ANCHOR *ret, const void *a)
+{
+    const accessor_args *const args = (void *)a;
+    const int line = args->line;
+    struct rb_iseq_constant_body *const body = iseq->body;
+    static const ID vars[] = {1, idUScore};
+
+    iseq_set_local_table(iseq, vars);
+    body->param.lead_num = 1;
+    body->param.size = 1;
+
+    ADD_GETLOCAL(ret, line, numberof(vars)-1, 0);
+    ADD_INSN1(ret, line, putobject, args->arg);
+    ADD_INSN1(ret, line, invokebuiltin, args->func);
+}
+
+/*
+ * func (index) -> (value)
+ */
+const rb_iseq_t *
+rb_method_for_self_aref(VALUE name, VALUE arg, const struct rb_builtin_function *func)
+{
+    return method_for_self(name, arg, func, for_self_aref);
+}
+
+/*
+ * func (index, value) -> (value)
+ */
+const rb_iseq_t *
+rb_method_for_self_aset(VALUE name, VALUE arg, const struct rb_builtin_function *func)
+{
+    return method_for_self(name, arg, func, for_self_aset);
+}
+
+/* ISeq binary format */
+
+#ifndef IBF_ISEQ_DEBUG
+#define IBF_ISEQ_DEBUG 0
+#endif
+
+#ifndef IBF_ISEQ_ENABLE_LOCAL_BUFFER
+#define IBF_ISEQ_ENABLE_LOCAL_BUFFER 0
+#endif
+
+typedef unsigned int ibf_offset_t;
+#define IBF_OFFSET(ptr) ((ibf_offset_t)(VALUE)(ptr))
+
+#define IBF_MAJOR_VERSION ISEQ_MAJOR_VERSION
+#if RUBY_DEVEL
+#define IBF_DEVEL_VERSION 3
+#define IBF_MINOR_VERSION (ISEQ_MINOR_VERSION * 10000 + IBF_DEVEL_VERSION)
+#else
+#define IBF_MINOR_VERSION ISEQ_MINOR_VERSION
+#endif
+
+struct ibf_header {
+    char magic[4]; /* YARB */
+    unsigned int major_version;
+    unsigned int minor_version;
+    unsigned int size;
+    unsigned int extra_size;
+
+    unsigned int iseq_list_size;
+    unsigned int global_object_list_size;
+    ibf_offset_t iseq_list_offset;
+    ibf_offset_t global_object_list_offset;
+};
+
+struct ibf_dump_buffer {
+    VALUE str;
+    st_table *obj_table; /* obj -> obj number */
+};
+
+struct ibf_dump {
+    st_table *iseq_table; /* iseq -> iseq number */
+    struct ibf_dump_buffer global_buffer;
+    struct ibf_dump_buffer *current_buffer;
+};
+
+rb_iseq_t * iseq_alloc(void);
+
+struct ibf_load_buffer {
+    const char *buff;
+    ibf_offset_t size;
+
+    VALUE obj_list; /* [obj0, ...] */
+    unsigned int obj_list_size;
+    ibf_offset_t obj_list_offset;
+};
+
+struct ibf_load {
+    const struct ibf_header *header;
+    VALUE iseq_list;       /* [iseq0, ...] */
+    struct ibf_load_buffer global_buffer;
+    VALUE loader_obj;
+    rb_iseq_t *iseq;
+    VALUE str;
+    struct ibf_load_buffer *current_buffer;
+};
+
+struct pinned_list {
+    long size;
+    VALUE * buffer;
+};
+
+static void
+pinned_list_mark(void *ptr)
+{
+    long i;
+    struct pinned_list *list = (struct pinned_list *)ptr;
+    for (i = 0; i < list->size; i++) {
+        if (list->buffer[i]) {
+            rb_gc_mark(list->buffer[i]);
+        }
+    }
+}
+
+static void
+pinned_list_free(void *ptr)
+{
+    struct pinned_list *list = (struct pinned_list *)ptr;
+    xfree(list->buffer);
+    xfree(ptr);
+}
+
+static size_t
+pinned_list_memsize(const void *ptr)
+{
+    struct pinned_list *list = (struct pinned_list *)ptr;
+    return sizeof(struct pinned_list) + (list->size * sizeof(VALUE *));
+}
+
+static const rb_data_type_t pinned_list_type = {
+    "pinned_list",
+    {pinned_list_mark, pinned_list_free, pinned_list_memsize,},
+    0, 0, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+static VALUE
+pinned_list_fetch(VALUE list, long offset)
+{
+    struct pinned_list * ptr;
+
+    TypedData_Get_Struct(list, struct pinned_list, &pinned_list_type, ptr);
+
+    if (offset >= ptr->size) {
+        rb_raise(rb_eIndexError, "object index out of range: %ld", offset);
+    }
+
+    return ptr->buffer[offset];
+}
+
+static void
+pinned_list_store(VALUE list, long offset, VALUE object)
+{
+    struct pinned_list * ptr;
+
+    TypedData_Get_Struct(list, struct pinned_list, &pinned_list_type, ptr);
+
+    if (offset >= ptr->size) {
+        rb_raise(rb_eIndexError, "object index out of range: %ld", offset);
+    }
+
+    RB_OBJ_WRITE(list, &ptr->buffer[offset], object);
+}
+
+static VALUE
+pinned_list_new(long size)
+{
+    struct pinned_list * ptr;
+    VALUE obj_list =
+        TypedData_Make_Struct(0, struct pinned_list, &pinned_list_type, ptr);
+
+    ptr->buffer = xcalloc(size, sizeof(VALUE));
+    ptr->size = size;
+
+    return obj_list;
+}
+
+static ibf_offset_t
+ibf_dump_pos(struct ibf_dump *dump)
+{
+    long pos = RSTRING_LEN(dump->current_buffer->str);
+#if SIZEOF_LONG > SIZEOF_INT
+    if (pos >= UINT_MAX) {
+        rb_raise(rb_eRuntimeError, "dump size exceeds");
+    }
+#endif
+    return (unsigned int)pos;
+}
+
+static void
+ibf_dump_align(struct ibf_dump *dump, size_t align)
+{
+    ibf_offset_t pos = ibf_dump_pos(dump);
+    if (pos % align) {
+        static const char padding[sizeof(VALUE)];
+        size_t size = align - ((size_t)pos % align);
+#if SIZEOF_LONG > SIZEOF_INT
+        if (pos + size >= UINT_MAX) {
+            rb_raise(rb_eRuntimeError, "dump size exceeds");
+        }
+#endif
+        for (; size > sizeof(padding); size -= sizeof(padding)) {
+            rb_str_cat(dump->current_buffer->str, padding, sizeof(padding));
+        }
+        rb_str_cat(dump->current_buffer->str, padding, size);
+    }
+}
+
+static ibf_offset_t
+ibf_dump_write(struct ibf_dump *dump, const void *buff, unsigned long size)
+{
+    ibf_offset_t pos = ibf_dump_pos(dump);
+    rb_str_cat(dump->current_buffer->str, (const char *)buff, size);
+    /* TODO: overflow check */
+    return pos;
+}
+
+static ibf_offset_t
+ibf_dump_write_byte(struct ibf_dump *dump, unsigned char byte)
+{
+    return ibf_dump_write(dump, &byte, sizeof(unsigned char));
+}
+
+static void
+ibf_dump_overwrite(struct ibf_dump *dump, void *buff, unsigned int size, long offset)
+{
+    VALUE str = dump->current_buffer->str;
+    char *ptr = RSTRING_PTR(str);
+    if ((unsigned long)(size + offset) > (unsigned long)RSTRING_LEN(str))
+        rb_bug("ibf_dump_overwrite: overflow");
+    memcpy(ptr + offset, buff, size);
+}
+
+static const void *
+ibf_load_ptr(const struct ibf_load *load, ibf_offset_t *offset, int size)
+{
+    ibf_offset_t beg = *offset;
+    *offset += size;
+    return load->current_buffer->buff + beg;
+}
+
+static void *
+ibf_load_alloc(const struct ibf_load *load, ibf_offset_t offset, size_t x, size_t y)
+{
+    void *buff = ruby_xmalloc2(x, y);
+    size_t size = x * y;
+    memcpy(buff, load->current_buffer->buff + offset, size);
+    return buff;
+}
+
+#define IBF_W_ALIGN(type) (RUBY_ALIGNOF(type) > 1 ? ibf_dump_align(dump, RUBY_ALIGNOF(type)) : (void)0)
+
+#define IBF_W(b, type, n) (IBF_W_ALIGN(type), (type *)(VALUE)IBF_WP(b, type, n))
+#define IBF_WV(variable)   ibf_dump_write(dump, &(variable), sizeof(variable))
+#define IBF_WP(b, type, n) ibf_dump_write(dump, (b), sizeof(type) * (n))
+#define IBF_R(val, type, n) (type *)ibf_load_alloc(load, IBF_OFFSET(val), sizeof(type), (n))
+#define IBF_ZERO(variable) memset(&(variable), 0, sizeof(variable))
+
+static int
+ibf_table_lookup(struct st_table *table, st_data_t key)
+{
+    st_data_t val;
+
+    if (st_lookup(table, key, &val)) {
+        return (int)val;
+    }
+    else {
+        return -1;
+    }
+}
+
+static int
+ibf_table_find_or_insert(struct st_table *table, st_data_t key)
+{
+    int index = ibf_table_lookup(table, key);
+
+    if (index < 0) { /* not found */
+        index = (int)table->num_entries;
+        st_insert(table, key, (st_data_t)index);
+    }
+
+    return index;
+}
+
+/* dump/load generic */
+
+static void ibf_dump_object_list(struct ibf_dump *dump, ibf_offset_t *obj_list_offset, unsigned int *obj_list_size);
+
+static VALUE ibf_load_object(const struct ibf_load *load, VALUE object_index);
+static rb_iseq_t *ibf_load_iseq(const struct ibf_load *load, const rb_iseq_t *index_iseq);
+
+static st_table *
+ibf_dump_object_table_new(void)
+{
+    st_table *obj_table = st_init_numtable(); /* need free */
+    st_insert(obj_table, (st_data_t)Qnil, (st_data_t)0); /* 0th is nil */
+
+    return obj_table;
+}
+
+static VALUE
+ibf_dump_object(struct ibf_dump *dump, VALUE obj)
+{
+    return ibf_table_find_or_insert(dump->current_buffer->obj_table, (st_data_t)obj);
+}
+
+static VALUE
+ibf_dump_id(struct ibf_dump *dump, ID id)
+{
+    if (id == 0 || rb_id2name(id) == NULL) {
+        return 0;
+    }
+    return ibf_dump_object(dump, rb_id2sym(id));
+}
+
+static ID
+ibf_load_id(const struct ibf_load *load, const ID id_index)
+{
+    if (id_index == 0) {
+        return 0;
+    }
+    VALUE sym = ibf_load_object(load, id_index);
+    return rb_sym2id(sym);
+}
+
+/* dump/load: code */
+
+static ibf_offset_t ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq);
+
+static int
+ibf_dump_iseq(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    if (iseq == NULL) {
+        return -1;
+    }
+    else {
+        return ibf_table_find_or_insert(dump->iseq_table, (st_data_t)iseq);
+    }
+}
+
+static unsigned char
+ibf_load_byte(const struct ibf_load *load, ibf_offset_t *offset)
+{
+    if (*offset >= load->current_buffer->size) { rb_raise(rb_eRuntimeError, "invalid bytecode"); }
+    return (unsigned char)load->current_buffer->buff[(*offset)++];
+}
+
+/*
+ * Small uint serialization
+ * 0x00000000_00000000 - 0x00000000_0000007f: 1byte | XXXX XXX1 |
+ * 0x00000000_00000080 - 0x00000000_00003fff: 2byte | XXXX XX10 | XXXX XXXX |
+ * 0x00000000_00004000 - 0x00000000_001fffff: 3byte | XXXX X100 | XXXX XXXX | XXXX XXXX |
+ * 0x00000000_00020000 - 0x00000000_0fffffff: 4byte | XXXX 1000 | XXXX XXXX | XXXX XXXX | XXXX XXXX |
+ * ...
+ * 0x00010000_00000000 - 0x00ffffff_ffffffff: 8byte | 1000 0000 | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX |
+ * 0x01000000_00000000 - 0xffffffff_ffffffff: 9byte | 0000 0000 | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX | XXXX XXXX |
+ */
+static void
+ibf_dump_write_small_value(struct ibf_dump *dump, VALUE x)
+{
+    if (sizeof(VALUE) > 8 || CHAR_BIT != 8) {
+        ibf_dump_write(dump, &x, sizeof(VALUE));
+        return;
+    }
+
+    enum { max_byte_length = sizeof(VALUE) + 1 };
+
+    unsigned char bytes[max_byte_length];
+    ibf_offset_t n;
+
+    for (n = 0; n < sizeof(VALUE) && (x >> (7 - n)); n++, x >>= 8) {
+        bytes[max_byte_length - 1 - n] = (unsigned char)x;
+    }
+
+    x <<= 1;
+    x |= 1;
+    x <<= n;
+    bytes[max_byte_length - 1 - n] = (unsigned char)x;
+    n++;
+
+    ibf_dump_write(dump, bytes + max_byte_length - n, n);
+}
+
+static VALUE
+ibf_load_small_value(const struct ibf_load *load, ibf_offset_t *offset)
+{
+    if (sizeof(VALUE) > 8 || CHAR_BIT != 8) {
+        union { char s[sizeof(VALUE)]; VALUE v; } x;
+
+        memcpy(x.s, load->current_buffer->buff + *offset, sizeof(VALUE));
+        *offset += sizeof(VALUE);
+
+        return x.v;
+    }
+
+    enum { max_byte_length = sizeof(VALUE) + 1 };
+
+    const unsigned char *buffer = (const unsigned char *)load->current_buffer->buff;
+    const unsigned char c = buffer[*offset];
+
+    ibf_offset_t n =
+        c & 1 ? 1 :
+        c == 0 ? 9 : ntz_int32(c) + 1;
+    VALUE x = (VALUE)c >> n;
+
+    if (*offset + n > load->current_buffer->size) {
+        rb_raise(rb_eRuntimeError, "invalid byte sequence");
+    }
+
+    ibf_offset_t i;
+    for (i = 1; i < n; i++) {
+        x <<= 8;
+        x |= (VALUE)buffer[*offset + i];
+    }
+
+    *offset += n;
+    return x;
+}
+
+static void
+ibf_dump_builtin(struct ibf_dump *dump, const struct rb_builtin_function *bf)
+{
+    // short: index
+    // short: name.length
+    // bytes: name
+    // // omit argc (only verify with name)
+    ibf_dump_write_small_value(dump, (VALUE)bf->index);
+
+    size_t len = strlen(bf->name);
+    ibf_dump_write_small_value(dump, (VALUE)len);
+    ibf_dump_write(dump, bf->name, len);
+}
+
+static const struct rb_builtin_function *
+ibf_load_builtin(const struct ibf_load *load, ibf_offset_t *offset)
+{
+    int i = (int)ibf_load_small_value(load, offset);
+    int len = (int)ibf_load_small_value(load, offset);
+    const char *name = (char *)ibf_load_ptr(load, offset, len);
+
+    if (0) {
+        fprintf(stderr, "%.*s!!\n", len, name);
+    }
+
+    const struct rb_builtin_function *table = GET_VM()->builtin_function_table;
+    if (table == NULL) rb_raise(rb_eArgError, "builtin function table is not provided");
+    if (strncmp(table[i].name, name, len) != 0) {
+        rb_raise(rb_eArgError, "builtin function index (%d) mismatch (expect %s but %s)", i, name, table[i].name);
+    }
+    // fprintf(stderr, "load-builtin: name:%s(%d)\n", table[i].name, table[i].argc);
+
+    return &table[i];
+}
+
+static ibf_offset_t
+ibf_dump_code(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    const struct rb_iseq_constant_body *const body = iseq->body;
+    const int iseq_size = body->iseq_size;
+    int code_index;
+    const VALUE *orig_code = rb_iseq_original_iseq(iseq);
+
+    ibf_offset_t offset = ibf_dump_pos(dump);
+
+    for (code_index=0; code_index<iseq_size;) {
+        const VALUE insn = orig_code[code_index++];
+        const char *types = insn_op_types(insn);
+        int op_index;
+
+        /* opcode */
+        if (insn >= 0x100) { rb_raise(rb_eRuntimeError, "invalid instruction"); }
+        ibf_dump_write_small_value(dump, insn);
+
+        /* operands */
+        for (op_index=0; types[op_index]; op_index++, code_index++) {
+            VALUE op = orig_code[code_index];
+            VALUE wv;
+
+            switch (types[op_index]) {
+              case TS_CDHASH:
+              case TS_VALUE:
+                wv = ibf_dump_object(dump, op);
+                break;
+              case TS_ISEQ:
+                wv = (VALUE)ibf_dump_iseq(dump, (const rb_iseq_t *)op);
+                break;
+              case TS_IC:
+              case TS_IVC:
+              case TS_ISE:
+                {
+                    unsigned int i;
+                    for (i=0; i<body->is_size; i++) {
+                        if (op == (VALUE)&body->is_entries[i]) {
+                            break;
+                        }
+                    }
+                    wv = (VALUE)i;
+                }
+                break;
+              case TS_CALLDATA:
+                {
+                    goto skip_wv;
+                }
+              case TS_ID:
+                wv = ibf_dump_id(dump, (ID)op);
+                break;
+              case TS_FUNCPTR:
+                rb_raise(rb_eRuntimeError, "TS_FUNCPTR is not supported");
+                goto skip_wv;
+              case TS_BUILTIN:
+                ibf_dump_builtin(dump, (const struct rb_builtin_function *)op);
+                goto skip_wv;
+              default:
+                wv = op;
+                break;
+            }
+            ibf_dump_write_small_value(dump, wv);
+          skip_wv:;
+        }
+        assert(insn_len(insn) == op_index+1);
+    }
+
+    return offset;
+}
+
+static VALUE *
+ibf_load_code(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t bytecode_offset, ibf_offset_t bytecode_size, unsigned int iseq_size)
+{
+    VALUE iseqv = (VALUE)iseq;
+    unsigned int code_index;
+    ibf_offset_t reading_pos = bytecode_offset;
+    VALUE *code = ALLOC_N(VALUE, iseq_size);
+
+    struct rb_iseq_constant_body *load_body = iseq->body;
+    struct rb_call_data *cd_entries = load_body->call_data;
+    union iseq_inline_storage_entry *is_entries = load_body->is_entries;
+
+    for (code_index=0; code_index<iseq_size;) {
+        /* opcode */
+        const VALUE insn = code[code_index++] = ibf_load_small_value(load, &reading_pos);
+        const char *types = insn_op_types(insn);
+        int op_index;
+
+        /* operands */
+        for (op_index=0; types[op_index]; op_index++, code_index++) {
+            switch (types[op_index]) {
+              case TS_CDHASH:
+              case TS_VALUE:
+                {
+                    VALUE op = ibf_load_small_value(load, &reading_pos);
+                    VALUE v = ibf_load_object(load, op);
+                    code[code_index] = v;
+                    if (!SPECIAL_CONST_P(v)) {
+                        RB_OBJ_WRITTEN(iseqv, Qundef, v);
+                        FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
+                    }
+                    break;
+                }
+              case TS_ISEQ:
+                {
+                    VALUE op = (VALUE)ibf_load_small_value(load, &reading_pos);
+                    VALUE v = (VALUE)ibf_load_iseq(load, (const rb_iseq_t *)op);
+                    code[code_index] = v;
+                    if (!SPECIAL_CONST_P(v)) {
+                        RB_OBJ_WRITTEN(iseqv, Qundef, v);
+                        FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
+                    }
+                    break;
+                }
+              case TS_ISE:
+              case TS_IC:
+              case TS_IVC:
+                {
+                    VALUE op = ibf_load_small_value(load, &reading_pos);
+                    code[code_index] = (VALUE)&is_entries[op];
+                }
+                FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
+                break;
+              case TS_CALLDATA:
+                {
+                    code[code_index] = (VALUE)cd_entries++;
+                }
+                break;
+              case TS_ID:
+                {
+                    VALUE op = ibf_load_small_value(load, &reading_pos);
+                    code[code_index] = ibf_load_id(load, (ID)(VALUE)op);
+                }
+                break;
+              case TS_FUNCPTR:
+                rb_raise(rb_eRuntimeError, "TS_FUNCPTR is not supported");
+                break;
+              case TS_BUILTIN:
+                code[code_index] = (VALUE)ibf_load_builtin(load, &reading_pos);
+                break;
+              default:
+                code[code_index] = ibf_load_small_value(load, &reading_pos);
+                continue;
+            }
+        }
+        if (insn_len(insn) != op_index+1) {
+            rb_raise(rb_eRuntimeError, "operand size mismatch");
+        }
+    }
+    load_body->iseq_encoded = code;
+    load_body->iseq_size = code_index;
+
+    assert(code_index == iseq_size);
+    assert(reading_pos == bytecode_offset + bytecode_size);
+    return code;
+}
+
+static ibf_offset_t
+ibf_dump_param_opt_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    int opt_num = iseq->body->param.opt_num;
+
+    if (opt_num > 0) {
+        IBF_W_ALIGN(VALUE);
+        return ibf_dump_write(dump, iseq->body->param.opt_table, sizeof(VALUE) * (opt_num + 1));
+    }
+    else {
+        return ibf_dump_pos(dump);
+    }
+}
+
+static VALUE *
+ibf_load_param_opt_table(const struct ibf_load *load, ibf_offset_t opt_table_offset, int opt_num)
+{
+    if (opt_num > 0) {
+        VALUE *table = ALLOC_N(VALUE, opt_num+1);
+        MEMCPY(table, load->current_buffer->buff + opt_table_offset, VALUE, opt_num+1);
+        return table;
+    }
+    else {
+        return NULL;
+    }
+}
+
+static ibf_offset_t
+ibf_dump_param_keyword(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    const struct rb_iseq_param_keyword *kw = iseq->body->param.keyword;
+
+    if (kw) {
+        struct rb_iseq_param_keyword dump_kw = *kw;
+        int dv_num = kw->num - kw->required_num;
+        ID *ids = kw->num > 0 ? ALLOCA_N(ID, kw->num) : NULL;
+        VALUE *dvs = dv_num > 0 ? ALLOCA_N(VALUE, dv_num) : NULL;
+        int i;
+
+        for (i=0; i<kw->num; i++) ids[i] = (ID)ibf_dump_id(dump, kw->table[i]);
+        for (i=0; i<dv_num; i++) dvs[i] = (VALUE)ibf_dump_object(dump, kw->default_values[i]);
+
+        dump_kw.table = IBF_W(ids, ID, kw->num);
+        dump_kw.default_values = IBF_W(dvs, VALUE, dv_num);
+        IBF_W_ALIGN(struct rb_iseq_param_keyword);
+        return ibf_dump_write(dump, &dump_kw, sizeof(struct rb_iseq_param_keyword) * 1);
+    }
+    else {
+        return 0;
+    }
+}
+
+static const struct rb_iseq_param_keyword *
+ibf_load_param_keyword(const struct ibf_load *load, ibf_offset_t param_keyword_offset)
+{
+    if (param_keyword_offset) {
+        struct rb_iseq_param_keyword *kw = IBF_R(param_keyword_offset, struct rb_iseq_param_keyword, 1);
+        ID *ids = IBF_R(kw->table, ID, kw->num);
+        int dv_num = kw->num - kw->required_num;
+        VALUE *dvs = IBF_R(kw->default_values, VALUE, dv_num);
+        int i;
+
+        for (i=0; i<kw->num; i++) {
+            ids[i] = ibf_load_id(load, ids[i]);
+        }
+        for (i=0; i<dv_num; i++) {
+            dvs[i] = ibf_load_object(load, dvs[i]);
+        }
+
+        kw->table = ids;
+        kw->default_values = dvs;
+        return kw;
+    }
+    else {
+        return NULL;
+    }
+}
+
+static ibf_offset_t
+ibf_dump_insns_info_body(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    ibf_offset_t offset = ibf_dump_pos(dump);
+    const struct iseq_insn_info_entry *entries = iseq->body->insns_info.body;
+
+    unsigned int i;
+    for (i = 0; i < iseq->body->insns_info.size; i++) {
+        ibf_dump_write_small_value(dump, entries[i].line_no);
+        ibf_dump_write_small_value(dump, entries[i].events);
+    }
+
+    return offset;
+}
+
+static struct iseq_insn_info_entry *
+ibf_load_insns_info_body(const struct ibf_load *load, ibf_offset_t body_offset, unsigned int size)
+{
+    ibf_offset_t reading_pos = body_offset;
+    struct iseq_insn_info_entry *entries = ALLOC_N(struct iseq_insn_info_entry, size);
+
+    unsigned int i;
+    for (i = 0; i < size; i++) {
+        entries[i].line_no = (int)ibf_load_small_value(load, &reading_pos);
+        entries[i].events = (rb_event_flag_t)ibf_load_small_value(load, &reading_pos);
+    }
+
+    return entries;
+}
+
+static ibf_offset_t
+ibf_dump_insns_info_positions(struct ibf_dump *dump, const unsigned int *positions, unsigned int size)
+{
+    ibf_offset_t offset = ibf_dump_pos(dump);
+
+    unsigned int last = 0;
+    unsigned int i;
+    for (i = 0; i < size; i++) {
+        ibf_dump_write_small_value(dump, positions[i] - last);
+        last = positions[i];
+    }
+
+    return offset;
+}
+
+static unsigned int *
+ibf_load_insns_info_positions(const struct ibf_load *load, ibf_offset_t positions_offset, unsigned int size)
+{
+    ibf_offset_t reading_pos = positions_offset;
+    unsigned int *positions = ALLOC_N(unsigned int, size);
+
+    unsigned int last = 0;
+    unsigned int i;
+    for (i = 0; i < size; i++) {
+        positions[i] = last + (unsigned int)ibf_load_small_value(load, &reading_pos);
+        last = positions[i];
+    }
+
+    return positions;
+}
+
+static ibf_offset_t
+ibf_dump_local_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    const struct rb_iseq_constant_body *const body = iseq->body;
+    const int size = body->local_table_size;
+    ID *table = ALLOCA_N(ID, size);
+    int i;
+
+    for (i=0; i<size; i++) {
+        table[i] = ibf_dump_id(dump, body->local_table[i]);
+    }
+
+    IBF_W_ALIGN(ID);
+    return ibf_dump_write(dump, table, sizeof(ID) * size);
+}
+
+static ID *
+ibf_load_local_table(const struct ibf_load *load, ibf_offset_t local_table_offset, int size)
+{
+    if (size > 0) {
+        ID *table = IBF_R(local_table_offset, ID, size);
+        int i;
+
+        for (i=0; i<size; i++) {
+            table[i] = ibf_load_id(load, table[i]);
+        }
+        return table;
+    }
+    else {
+        return NULL;
+    }
+}
+
+static ibf_offset_t
+ibf_dump_catch_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    const struct iseq_catch_table *table = iseq->body->catch_table;
+
+    if (table) {
+        int *iseq_indices = ALLOCA_N(int, table->size);
+        unsigned int i;
+
+        for (i=0; i<table->size; i++) {
+            iseq_indices[i] = ibf_dump_iseq(dump, table->entries[i].iseq);
+        }
+
+        const ibf_offset_t offset = ibf_dump_pos(dump);
+
+        for (i=0; i<table->size; i++) {
+            ibf_dump_write_small_value(dump, iseq_indices[i]);
+            ibf_dump_write_small_value(dump, table->entries[i].type);
+            ibf_dump_write_small_value(dump, table->entries[i].start);
+            ibf_dump_write_small_value(dump, table->entries[i].end);
+            ibf_dump_write_small_value(dump, table->entries[i].cont);
+            ibf_dump_write_small_value(dump, table->entries[i].sp);
+        }
+        return offset;
+    }
+    else {
+        return ibf_dump_pos(dump);
+    }
+}
+
+static struct iseq_catch_table *
+ibf_load_catch_table(const struct ibf_load *load, ibf_offset_t catch_table_offset, unsigned int size)
+{
+    if (size) {
+        struct iseq_catch_table *table = ruby_xmalloc(iseq_catch_table_bytes(size));
+        table->size = size;
+
+        ibf_offset_t reading_pos = catch_table_offset;
+
+        unsigned int i;
+        for (i=0; i<table->size; i++) {
+            int iseq_index = (int)ibf_load_small_value(load, &reading_pos);
+            table->entries[i].type = (enum catch_type)ibf_load_small_value(load, &reading_pos);
+            table->entries[i].start = (unsigned int)ibf_load_small_value(load, &reading_pos);
+            table->entries[i].end = (unsigned int)ibf_load_small_value(load, &reading_pos);
+            table->entries[i].cont = (unsigned int)ibf_load_small_value(load, &reading_pos);
+            table->entries[i].sp = (unsigned int)ibf_load_small_value(load, &reading_pos);
+
+            table->entries[i].iseq = ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)iseq_index);
+        }
+        return table;
+    }
+    else {
+        return NULL;
+    }
+}
+
+static ibf_offset_t
+ibf_dump_ci_entries(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    const struct rb_iseq_constant_body *const body = iseq->body;
+    const unsigned int ci_size = body->ci_size;
+    const struct rb_call_data *cds = body->call_data;
+
+    ibf_offset_t offset = ibf_dump_pos(dump);
+
+    unsigned int i;
+
+    for (i = 0; i < ci_size; i++) {
+        const struct rb_callinfo *ci = cds[i].ci;
+        if (ci != NULL) {
+            ibf_dump_write_small_value(dump, ibf_dump_id(dump, vm_ci_mid(ci)));
+            ibf_dump_write_small_value(dump, vm_ci_flag(ci));
+            ibf_dump_write_small_value(dump, vm_ci_argc(ci));
+
+            const struct rb_callinfo_kwarg *kwarg = vm_ci_kwarg(ci);
+            if (kwarg) {
+                int len = kwarg->keyword_len;
+                ibf_dump_write_small_value(dump, len);
+                for (int j=0; j<len; j++) {
+                    VALUE keyword = ibf_dump_object(dump, kwarg->keywords[j]);
+                    ibf_dump_write_small_value(dump, keyword);
+                }
+            }
+            else {
+                ibf_dump_write_small_value(dump, 0);
+            }
+        }
+        else {
+            // TODO: truncate NULL ci from call_data.
+            ibf_dump_write_small_value(dump, (VALUE)-1);
+        }
+    }
+
+    return offset;
+}
+
+static enum rb_id_table_iterator_result
+dump_outer_variable(ID id, VALUE val, void *dump)
+{
+    ibf_dump_write_small_value(dump, ibf_dump_id(dump, id));
+    ibf_dump_write_small_value(dump, val);
+
+    return ID_TABLE_CONTINUE;
+}
+
+static ibf_offset_t
+ibf_dump_outer_variables(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    struct rb_id_table * ovs = iseq->body->outer_variables;
+
+    ibf_offset_t offset = ibf_dump_pos(dump);
+
+    if (ovs) {
+        ibf_dump_write_small_value(dump, (VALUE)rb_id_table_size(ovs));
+        rb_id_table_foreach(ovs, dump_outer_variable, (void *)dump);
+    }
+    else {
+        ibf_dump_write_small_value(dump, (VALUE)0);
+    }
+
+    return offset;
+}
+
+/* note that we dump out rb_call_info but load back rb_call_data */
+static void
+ibf_load_ci_entries(const struct ibf_load *load,
+                    ibf_offset_t ci_entries_offset,
+                    unsigned int ci_size,
+                    struct rb_call_data **cd_ptr)
+{
+    ibf_offset_t reading_pos = ci_entries_offset;
+
+    unsigned int i;
+
+    struct rb_call_data *cds = ZALLOC_N(struct rb_call_data, ci_size);
+    *cd_ptr = cds;
+
+    for (i = 0; i < ci_size; i++) {
+        VALUE mid_index = ibf_load_small_value(load, &reading_pos);
+        if (mid_index != (VALUE)-1) {
+            ID mid = ibf_load_id(load, mid_index);
+            unsigned int flag = (unsigned int)ibf_load_small_value(load, &reading_pos);
+            unsigned int argc = (unsigned int)ibf_load_small_value(load, &reading_pos);
+
+            struct rb_callinfo_kwarg *kwarg = NULL;
+            int kwlen = (int)ibf_load_small_value(load, &reading_pos);
+            if (kwlen > 0) {
+                kwarg = rb_xmalloc_mul_add(kwlen, sizeof(VALUE), sizeof(struct rb_callinfo_kwarg));
+                kwarg->keyword_len = kwlen;
+                for (int j=0; j<kwlen; j++) {
+                    VALUE keyword = ibf_load_small_value(load, &reading_pos);
+                    kwarg->keywords[j] = ibf_load_object(load, keyword);
+                }
+            }
+
+            cds[i].ci = vm_ci_new(mid, flag, argc, kwarg);
+            RB_OBJ_WRITTEN(load->iseq, Qundef, cds[i].ci);
+            cds[i].cc = vm_cc_empty();
+        }
+        else {
+            // NULL ci
+            cds[i].ci = NULL;
+            cds[i].cc = NULL;
+        }
+    }
+}
+
+static struct rb_id_table *
+ibf_load_outer_variables(const struct ibf_load * load, ibf_offset_t outer_variables_offset)
+{
+    ibf_offset_t reading_pos = outer_variables_offset;
+
+    struct rb_id_table *tbl = NULL;
+
+    size_t table_size = (size_t)ibf_load_small_value(load, &reading_pos);
+
+    if (table_size > 0) {
+        tbl = rb_id_table_create(table_size);
+    }
+
+    for (size_t i = 0; i < table_size; i++) {
+        ID key = ibf_load_id(load, (ID)ibf_load_small_value(load, &reading_pos));
+        VALUE value = ibf_load_small_value(load, &reading_pos);
+        rb_id_table_insert(tbl, key, value);
+    }
+
+    return tbl;
+}
+
+static ibf_offset_t
+ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    assert(dump->current_buffer == &dump->global_buffer);
+
+    unsigned int *positions;
+
+    const struct rb_iseq_constant_body *body = iseq->body;
+
+    const VALUE location_pathobj_index = ibf_dump_object(dump, body->location.pathobj); /* TODO: freeze */
+    const VALUE location_base_label_index = ibf_dump_object(dump, body->location.base_label);
+    const VALUE location_label_index = ibf_dump_object(dump, body->location.label);
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+    ibf_offset_t iseq_start = ibf_dump_pos(dump);
+
+    struct ibf_dump_buffer *saved_buffer = dump->current_buffer;
+    struct ibf_dump_buffer buffer;
+    buffer.str = rb_str_new(0, 0);
+    buffer.obj_table = ibf_dump_object_table_new();
+    dump->current_buffer = &buffer;
+#endif
+
+    const ibf_offset_t bytecode_offset =        ibf_dump_code(dump, iseq);
+    const ibf_offset_t bytecode_size =          ibf_dump_pos(dump) - bytecode_offset;
+    const ibf_offset_t param_opt_table_offset = ibf_dump_param_opt_table(dump, iseq);
+    const ibf_offset_t param_keyword_offset =   ibf_dump_param_keyword(dump, iseq);
+    const ibf_offset_t insns_info_body_offset = ibf_dump_insns_info_body(dump, iseq);
+
+    positions = rb_iseq_insns_info_decode_positions(iseq->body);
+    const ibf_offset_t insns_info_positions_offset = ibf_dump_insns_info_positions(dump, positions, body->insns_info.size);
+    ruby_xfree(positions);
+
+    const ibf_offset_t local_table_offset = ibf_dump_local_table(dump, iseq);
+    const unsigned int catch_table_size =   body->catch_table ? body->catch_table->size : 0;
+    const ibf_offset_t catch_table_offset = ibf_dump_catch_table(dump, iseq);
+    const int parent_iseq_index =           ibf_dump_iseq(dump, iseq->body->parent_iseq);
+    const int local_iseq_index =            ibf_dump_iseq(dump, iseq->body->local_iseq);
+    const ibf_offset_t ci_entries_offset =  ibf_dump_ci_entries(dump, iseq);
+    const ibf_offset_t outer_variables_offset = ibf_dump_outer_variables(dump, iseq);
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+    ibf_offset_t local_obj_list_offset;
+    unsigned int local_obj_list_size;
+
+    ibf_dump_object_list(dump, &local_obj_list_offset, &local_obj_list_size);
+#endif
+
+    ibf_offset_t body_offset = ibf_dump_pos(dump);
+
+    /* dump the constant body */
+    unsigned int param_flags =
+        (body->param.flags.has_lead         << 0) |
+        (body->param.flags.has_opt          << 1) |
+        (body->param.flags.has_rest         << 2) |
+        (body->param.flags.has_post         << 3) |
+        (body->param.flags.has_kw           << 4) |
+        (body->param.flags.has_kwrest       << 5) |
+        (body->param.flags.has_block        << 6) |
+        (body->param.flags.ambiguous_param0 << 7) |
+        (body->param.flags.accepts_no_kwarg << 8) |
+        (body->param.flags.ruby2_keywords   << 9);
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+#  define IBF_BODY_OFFSET(x) (x)
+#else
+#  define IBF_BODY_OFFSET(x) (body_offset - (x))
+#endif
+
+    ibf_dump_write_small_value(dump, body->type);
+    ibf_dump_write_small_value(dump, body->iseq_size);
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(bytecode_offset));
+    ibf_dump_write_small_value(dump, bytecode_size);
+    ibf_dump_write_small_value(dump, param_flags);
+    ibf_dump_write_small_value(dump, body->param.size);
+    ibf_dump_write_small_value(dump, body->param.lead_num);
+    ibf_dump_write_small_value(dump, body->param.opt_num);
+    ibf_dump_write_small_value(dump, body->param.rest_start);
+    ibf_dump_write_small_value(dump, body->param.post_start);
+    ibf_dump_write_small_value(dump, body->param.post_num);
+    ibf_dump_write_small_value(dump, body->param.block_start);
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(param_opt_table_offset));
+    ibf_dump_write_small_value(dump, param_keyword_offset);
+    ibf_dump_write_small_value(dump, location_pathobj_index);
+    ibf_dump_write_small_value(dump, location_base_label_index);
+    ibf_dump_write_small_value(dump, location_label_index);
+    ibf_dump_write_small_value(dump, body->location.first_lineno);
+    ibf_dump_write_small_value(dump, body->location.node_id);
+    ibf_dump_write_small_value(dump, body->location.code_location.beg_pos.lineno);
+    ibf_dump_write_small_value(dump, body->location.code_location.beg_pos.column);
+    ibf_dump_write_small_value(dump, body->location.code_location.end_pos.lineno);
+    ibf_dump_write_small_value(dump, body->location.code_location.end_pos.column);
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(insns_info_body_offset));
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(insns_info_positions_offset));
+    ibf_dump_write_small_value(dump, body->insns_info.size);
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(local_table_offset));
+    ibf_dump_write_small_value(dump, catch_table_size);
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(catch_table_offset));
+    ibf_dump_write_small_value(dump, parent_iseq_index);
+    ibf_dump_write_small_value(dump, local_iseq_index);
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(ci_entries_offset));
+    ibf_dump_write_small_value(dump, IBF_BODY_OFFSET(outer_variables_offset));
+    ibf_dump_write_small_value(dump, body->variable.flip_count);
+    ibf_dump_write_small_value(dump, body->local_table_size);
+    ibf_dump_write_small_value(dump, body->is_size);
+    ibf_dump_write_small_value(dump, body->ci_size);
+    ibf_dump_write_small_value(dump, body->stack_max);
+    ibf_dump_write_small_value(dump, body->catch_except_p);
+    ibf_dump_write_small_value(dump, body->builtin_inline_p);
+
+#undef IBF_BODY_OFFSET
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+    ibf_offset_t iseq_length_bytes = ibf_dump_pos(dump);
+
+    dump->current_buffer = saved_buffer;
+    ibf_dump_write(dump, RSTRING_PTR(buffer.str), iseq_length_bytes);
+
+    ibf_offset_t offset = ibf_dump_pos(dump);
+    ibf_dump_write_small_value(dump, iseq_start);
+    ibf_dump_write_small_value(dump, iseq_length_bytes);
+    ibf_dump_write_small_value(dump, body_offset);
+
+    ibf_dump_write_small_value(dump, local_obj_list_offset);
+    ibf_dump_write_small_value(dump, local_obj_list_size);
+
+    st_free_table(buffer.obj_table); // TODO: this leaks in case of exception
+
+    return offset;
+#else
+    return body_offset;
+#endif
+}
+
+static VALUE
+ibf_load_location_str(const struct ibf_load *load, VALUE str_index)
+{
+    VALUE str = ibf_load_object(load, str_index);
+    if (str != Qnil) {
+        str = rb_fstring(str);
+    }
+    return str;
+}
+
+static void
+ibf_load_iseq_each(struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
+{
+    struct rb_iseq_constant_body *load_body = iseq->body = rb_iseq_constant_body_alloc();
+
+    ibf_offset_t reading_pos = offset;
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+    struct ibf_load_buffer *saved_buffer = load->current_buffer;
+    load->current_buffer = &load->global_buffer;
+
+    const ibf_offset_t iseq_start = (ibf_offset_t)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t iseq_length_bytes = (ibf_offset_t)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t body_offset = (ibf_offset_t)ibf_load_small_value(load, &reading_pos);
+
+    struct ibf_load_buffer buffer;
+    buffer.buff = load->global_buffer.buff + iseq_start;
+    buffer.size = iseq_length_bytes;
+    buffer.obj_list_offset = (ibf_offset_t)ibf_load_small_value(load, &reading_pos);
+    buffer.obj_list_size = (ibf_offset_t)ibf_load_small_value(load, &reading_pos);
+    buffer.obj_list = pinned_list_new(buffer.obj_list_size);
+
+    load->current_buffer = &buffer;
+    reading_pos = body_offset;
+#endif
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+#  define IBF_BODY_OFFSET(x) (x)
+#else
+#  define IBF_BODY_OFFSET(x) (offset - (x))
+#endif
+
+    const unsigned int type = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const unsigned int iseq_size = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t bytecode_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const ibf_offset_t bytecode_size = (ibf_offset_t)ibf_load_small_value(load, &reading_pos);
+    const unsigned int param_flags = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const unsigned int param_size = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const int param_lead_num = (int)ibf_load_small_value(load, &reading_pos);
+    const int param_opt_num = (int)ibf_load_small_value(load, &reading_pos);
+    const int param_rest_start = (int)ibf_load_small_value(load, &reading_pos);
+    const int param_post_start = (int)ibf_load_small_value(load, &reading_pos);
+    const int param_post_num = (int)ibf_load_small_value(load, &reading_pos);
+    const int param_block_start = (int)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t param_opt_table_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const ibf_offset_t param_keyword_offset = (ibf_offset_t)ibf_load_small_value(load, &reading_pos);
+    const VALUE location_pathobj_index = ibf_load_small_value(load, &reading_pos);
+    const VALUE location_base_label_index = ibf_load_small_value(load, &reading_pos);
+    const VALUE location_label_index = ibf_load_small_value(load, &reading_pos);
+    const VALUE location_first_lineno = ibf_load_small_value(load, &reading_pos);
+    const int location_node_id = (int)ibf_load_small_value(load, &reading_pos);
+    const int location_code_location_beg_pos_lineno = (int)ibf_load_small_value(load, &reading_pos);
+    const int location_code_location_beg_pos_column = (int)ibf_load_small_value(load, &reading_pos);
+    const int location_code_location_end_pos_lineno = (int)ibf_load_small_value(load, &reading_pos);
+    const int location_code_location_end_pos_column = (int)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t insns_info_body_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const ibf_offset_t insns_info_positions_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const unsigned int insns_info_size = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t local_table_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const unsigned int catch_table_size = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t catch_table_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const int parent_iseq_index = (int)ibf_load_small_value(load, &reading_pos);
+    const int local_iseq_index = (int)ibf_load_small_value(load, &reading_pos);
+    const ibf_offset_t ci_entries_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const ibf_offset_t outer_variables_offset = (ibf_offset_t)IBF_BODY_OFFSET(ibf_load_small_value(load, &reading_pos));
+    const rb_snum_t variable_flip_count = (rb_snum_t)ibf_load_small_value(load, &reading_pos);
+    const unsigned int local_table_size = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const unsigned int is_size = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const unsigned int ci_size = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const unsigned int stack_max = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const char catch_except_p = (char)ibf_load_small_value(load, &reading_pos);
+    const bool builtin_inline_p = (bool)ibf_load_small_value(load, &reading_pos);
+
+#undef IBF_BODY_OFFSET
+
+    load_body->type = type;
+    load_body->stack_max = stack_max;
+    load_body->param.flags.has_lead = (param_flags >> 0) & 1;
+    load_body->param.flags.has_opt = (param_flags >> 1) & 1;
+    load_body->param.flags.has_rest = (param_flags >> 2) & 1;
+    load_body->param.flags.has_post = (param_flags >> 3) & 1;
+    load_body->param.flags.has_kw = FALSE;
+    load_body->param.flags.has_kwrest = (param_flags >> 5) & 1;
+    load_body->param.flags.has_block = (param_flags >> 6) & 1;
+    load_body->param.flags.ambiguous_param0 = (param_flags >> 7) & 1;
+    load_body->param.flags.accepts_no_kwarg = (param_flags >> 8) & 1;
+    load_body->param.flags.ruby2_keywords = (param_flags >> 9) & 1;
+    load_body->param.size = param_size;
+    load_body->param.lead_num = param_lead_num;
+    load_body->param.opt_num = param_opt_num;
+    load_body->param.rest_start = param_rest_start;
+    load_body->param.post_start = param_post_start;
+    load_body->param.post_num = param_post_num;
+    load_body->param.block_start = param_block_start;
+    load_body->local_table_size = local_table_size;
+    load_body->is_size = is_size;
+    load_body->ci_size = ci_size;
+    load_body->insns_info.size = insns_info_size;
+
+    ISEQ_COVERAGE_SET(iseq, Qnil);
+    ISEQ_ORIGINAL_ISEQ_CLEAR(iseq);
+    iseq->body->variable.flip_count = variable_flip_count;
+
+    load_body->location.first_lineno = location_first_lineno;
+    load_body->location.node_id = location_node_id;
+    load_body->location.code_location.beg_pos.lineno = location_code_location_beg_pos_lineno;
+    load_body->location.code_location.beg_pos.column = location_code_location_beg_pos_column;
+    load_body->location.code_location.end_pos.lineno = location_code_location_end_pos_lineno;
+    load_body->location.code_location.end_pos.column = location_code_location_end_pos_column;
+    load_body->catch_except_p = catch_except_p;
+    load_body->builtin_inline_p = builtin_inline_p;
+
+    load_body->is_entries           = ZALLOC_N(union iseq_inline_storage_entry, is_size);
+                                      ibf_load_ci_entries(load, ci_entries_offset, ci_size, &load_body->call_data);
+    load_body->outer_variables      = ibf_load_outer_variables(load, outer_variables_offset);
+    load_body->param.opt_table      = ibf_load_param_opt_table(load, param_opt_table_offset, param_opt_num);
+    load_body->param.keyword        = ibf_load_param_keyword(load, param_keyword_offset);
+    load_body->param.flags.has_kw   = (param_flags >> 4) & 1;
+    load_body->insns_info.body      = ibf_load_insns_info_body(load, insns_info_body_offset, insns_info_size);
+    load_body->insns_info.positions = ibf_load_insns_info_positions(load, insns_info_positions_offset, insns_info_size);
+    load_body->local_table          = ibf_load_local_table(load, local_table_offset, local_table_size);
+    load_body->catch_table          = ibf_load_catch_table(load, catch_table_offset, catch_table_size);
+    load_body->parent_iseq          = ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)parent_iseq_index);
+    load_body->local_iseq           = ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)local_iseq_index);
+
+    ibf_load_code(load, iseq, bytecode_offset, bytecode_size, iseq_size);
+#if VM_INSN_INFO_TABLE_IMPL == 2
+    rb_iseq_insns_info_encode_positions(iseq);
+#endif
+
+    rb_iseq_translate_threaded_code(iseq);
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+    load->current_buffer = &load->global_buffer;
+#endif
+
+    {
+        VALUE realpath = Qnil, path = ibf_load_object(load, location_pathobj_index);
+        if (RB_TYPE_P(path, T_STRING)) {
+            realpath = path = rb_fstring(path);
+        }
+        else if (RB_TYPE_P(path, T_ARRAY)) {
+            VALUE pathobj = path;
+            if (RARRAY_LEN(pathobj) != 2) {
+                rb_raise(rb_eRuntimeError, "path object size mismatch");
+            }
+            path = rb_fstring(RARRAY_AREF(pathobj, 0));
+            realpath = RARRAY_AREF(pathobj, 1);
+            if (!NIL_P(realpath)) {
+                if (!RB_TYPE_P(realpath, T_STRING)) {
+                    rb_raise(rb_eArgError, "unexpected realpath %"PRIxVALUE
+                             "(%x), path=%+"PRIsVALUE,
+                             realpath, TYPE(realpath), path);
+                }
+                realpath = rb_fstring(realpath);
+            }
+        }
+        else {
+            rb_raise(rb_eRuntimeError, "unexpected path object");
+        }
+        rb_iseq_pathobj_set(iseq, path, realpath);
+    }
+
+    RB_OBJ_WRITE(iseq, &load_body->location.base_label,    ibf_load_location_str(load, location_base_label_index));
+    RB_OBJ_WRITE(iseq, &load_body->location.label,         ibf_load_location_str(load, location_label_index));
+
+#if IBF_ISEQ_ENABLE_LOCAL_BUFFER
+    load->current_buffer = saved_buffer;
+#endif
+    verify_call_cache(iseq);
+}
+
+struct ibf_dump_iseq_list_arg
+{
+    struct ibf_dump *dump;
+    VALUE offset_list;
+};
+
+static int
+ibf_dump_iseq_list_i(st_data_t key, st_data_t val, st_data_t ptr)
+{
+    const rb_iseq_t *iseq = (const rb_iseq_t *)key;
+    struct ibf_dump_iseq_list_arg *args = (struct ibf_dump_iseq_list_arg *)ptr;
+
+    ibf_offset_t offset = ibf_dump_iseq_each(args->dump, iseq);
+    rb_ary_push(args->offset_list, UINT2NUM(offset));
+
+    return ST_CONTINUE;
+}
+
+static void
+ibf_dump_iseq_list(struct ibf_dump *dump, struct ibf_header *header)
+{
+    VALUE offset_list = rb_ary_tmp_new(dump->iseq_table->num_entries);
+
+    struct ibf_dump_iseq_list_arg args;
+    args.dump = dump;
+    args.offset_list = offset_list;
+
+    st_foreach(dump->iseq_table, ibf_dump_iseq_list_i, (st_data_t)&args);
+
+    st_index_t i;
+    st_index_t size = dump->iseq_table->num_entries;
+    ibf_offset_t *offsets = ALLOCA_N(ibf_offset_t, size);
+
+    for (i = 0; i < size; i++) {
+        offsets[i] = NUM2UINT(RARRAY_AREF(offset_list, i));
+    }
+
+    ibf_dump_align(dump, sizeof(ibf_offset_t));
+    header->iseq_list_offset = ibf_dump_write(dump, offsets, sizeof(ibf_offset_t) * size);
+    header->iseq_list_size = (unsigned int)size;
+}
+
+#define IBF_OBJECT_INTERNAL FL_PROMOTED0
+
+/*
+ * Binary format
+ * - ibf_object_header
+ * - ibf_object_xxx (xxx is type)
+ */
+
+struct ibf_object_header {
+    unsigned int type: 5;
+    unsigned int special_const: 1;
+    unsigned int frozen: 1;
+    unsigned int internal: 1;
+};
+
+enum ibf_object_class_index {
+    IBF_OBJECT_CLASS_OBJECT,
+    IBF_OBJECT_CLASS_ARRAY,
+    IBF_OBJECT_CLASS_STANDARD_ERROR,
+    IBF_OBJECT_CLASS_NO_MATCHING_PATTERN_ERROR,
+    IBF_OBJECT_CLASS_TYPE_ERROR,
+};
+
+struct ibf_object_regexp {
+    long srcstr;
+    char option;
+};
+
+struct ibf_object_hash {
+    long len;
+    long keyval[FLEX_ARY_LEN];
+};
+
+struct ibf_object_struct_range {
+    long class_index;
+    long len;
+    long beg;
+    long end;
+    int excl;
+};
+
+struct ibf_object_bignum {
+    ssize_t slen;
+    BDIGIT digits[FLEX_ARY_LEN];
+};
+
+enum ibf_object_data_type {
+    IBF_OBJECT_DATA_ENCODING,
+};
+
+struct ibf_object_complex_rational {
+    long a, b;
+};
+
+struct ibf_object_symbol {
+    long str;
+};
+
+#define IBF_ALIGNED_OFFSET(align, offset) /* offset > 0 */ \
+    ((((offset) - 1) / (align) + 1) * (align))
+#define IBF_OBJBODY(type, offset) (const type *)\
+    ibf_load_check_offset(load, IBF_ALIGNED_OFFSET(RUBY_ALIGNOF(type), offset))
+
+static const void *
+ibf_load_check_offset(const struct ibf_load *load, size_t offset)
+{
+    if (offset >= load->current_buffer->size) {
+	rb_raise(rb_eIndexError, "object offset out of range: %"PRIdSIZE, offset);
+    }
+    return load->current_buffer->buff + offset;
+}
+
+NORETURN(static void ibf_dump_object_unsupported(struct ibf_dump *dump, VALUE obj));
+
+static void
+ibf_dump_object_unsupported(struct ibf_dump *dump, VALUE obj)
+{
+    char buff[0x100];
+    rb_raw_obj_info(buff, sizeof(buff), obj);
+    rb_raise(rb_eNotImpError, "ibf_dump_object_unsupported: %s", buff);
+}
+
+NORETURN(static VALUE ibf_load_object_unsupported(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset));
+
+static VALUE
+ibf_load_object_unsupported(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    rb_raise(rb_eArgError, "unsupported");
+    UNREACHABLE_RETURN(Qnil);
+}
+
+static void
+ibf_dump_object_class(struct ibf_dump *dump, VALUE obj)
+{
+    enum ibf_object_class_index cindex;
+    if (obj == rb_cObject) {
+        cindex = IBF_OBJECT_CLASS_OBJECT;
+    }
+    else if (obj == rb_cArray) {
+        cindex = IBF_OBJECT_CLASS_ARRAY;
+    }
+    else if (obj == rb_eStandardError) {
+        cindex = IBF_OBJECT_CLASS_STANDARD_ERROR;
+    }
+    else if (obj == rb_eNoMatchingPatternError) {
+        cindex = IBF_OBJECT_CLASS_NO_MATCHING_PATTERN_ERROR;
+    }
+    else if (obj == rb_eTypeError) {
+        cindex = IBF_OBJECT_CLASS_TYPE_ERROR;
+    }
+    else {
+        rb_obj_info_dump(obj);
+        rb_p(obj);
+        rb_bug("unsupported class");
+    }
+    ibf_dump_write_small_value(dump, (VALUE)cindex);
+}
+
+static VALUE
+ibf_load_object_class(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    enum ibf_object_class_index cindex = (enum ibf_object_class_index)ibf_load_small_value(load, &offset);
+
+    switch (cindex) {
+      case IBF_OBJECT_CLASS_OBJECT:
+	return rb_cObject;
+      case IBF_OBJECT_CLASS_ARRAY:
+	return rb_cArray;
+      case IBF_OBJECT_CLASS_STANDARD_ERROR:
+	return rb_eStandardError;
+      case IBF_OBJECT_CLASS_NO_MATCHING_PATTERN_ERROR:
+        return rb_eNoMatchingPatternError;
+      case IBF_OBJECT_CLASS_TYPE_ERROR:
+        return rb_eTypeError;
+    }
+
+    rb_raise(rb_eArgError, "ibf_load_object_class: unknown class (%d)", (int)cindex);
+}
+
+
+static void
+ibf_dump_object_float(struct ibf_dump *dump, VALUE obj)
+{
+    double dbl = RFLOAT_VALUE(obj);
+    (void)IBF_W(&dbl, double, 1);
+}
+
+static VALUE
+ibf_load_object_float(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    const double *dblp = IBF_OBJBODY(double, offset);
+    return DBL2NUM(*dblp);
+}
+
+static void
+ibf_dump_object_string(struct ibf_dump *dump, VALUE obj)
+{
+    long encindex = (long)rb_enc_get_index(obj);
+    long len = RSTRING_LEN(obj);
+    const char *ptr = RSTRING_PTR(obj);
+
+    if (encindex > RUBY_ENCINDEX_BUILTIN_MAX) {
+        rb_encoding *enc = rb_enc_from_index((int)encindex);
+        const char *enc_name = rb_enc_name(enc);
+        encindex = RUBY_ENCINDEX_BUILTIN_MAX + ibf_dump_object(dump, rb_str_new2(enc_name));
+    }
+
+    ibf_dump_write_small_value(dump, encindex);
+    ibf_dump_write_small_value(dump, len);
+    IBF_WP(ptr, char, len);
+}
+
+static VALUE
+ibf_load_object_string(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    ibf_offset_t reading_pos = offset;
+
+    int encindex = (int)ibf_load_small_value(load, &reading_pos);
+    const long len = (long)ibf_load_small_value(load, &reading_pos);
+    const char *ptr = load->current_buffer->buff + reading_pos;
+
+    VALUE str = rb_str_new(ptr, len);
+
+    if (encindex > RUBY_ENCINDEX_BUILTIN_MAX) {
+        VALUE enc_name_str = ibf_load_object(load, encindex - RUBY_ENCINDEX_BUILTIN_MAX);
+        encindex = rb_enc_find_index(RSTRING_PTR(enc_name_str));
+    }
+    rb_enc_associate_index(str, encindex);
+
+    if (header->internal) rb_obj_hide(str);
+    if (header->frozen)   str = rb_fstring(str);
+
+    return str;
+}
+
+static void
+ibf_dump_object_regexp(struct ibf_dump *dump, VALUE obj)
+{
+    VALUE srcstr = RREGEXP_SRC(obj);
+    struct ibf_object_regexp regexp;
+    regexp.option = (char)rb_reg_options(obj);
+    regexp.srcstr = (long)ibf_dump_object(dump, srcstr);
+
+    ibf_dump_write_byte(dump, (unsigned char)regexp.option);
+    ibf_dump_write_small_value(dump, regexp.srcstr);
+}
+
+static VALUE
+ibf_load_object_regexp(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    struct ibf_object_regexp regexp;
+    regexp.option = ibf_load_byte(load, &offset);
+    regexp.srcstr = ibf_load_small_value(load, &offset);
+
+    VALUE srcstr = ibf_load_object(load, regexp.srcstr);
+    VALUE reg = rb_reg_compile(srcstr, (int)regexp.option, NULL, 0);
+
+    if (header->internal) rb_obj_hide(reg);
+    if (header->frozen)   rb_obj_freeze(reg);
+
+    return reg;
+}
+
+static void
+ibf_dump_object_array(struct ibf_dump *dump, VALUE obj)
+{
+    long i, len = RARRAY_LEN(obj);
+    ibf_dump_write_small_value(dump, len);
+    for (i=0; i<len; i++) {
+        long index = (long)ibf_dump_object(dump, RARRAY_AREF(obj, i));
+        ibf_dump_write_small_value(dump, index);
+    }
+}
+
+static VALUE
+ibf_load_object_array(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    ibf_offset_t reading_pos = offset;
+
+    const long len = (long)ibf_load_small_value(load, &reading_pos);
+
+    VALUE ary = rb_ary_new_capa(len);
+    int i;
+
+    for (i=0; i<len; i++) {
+        const VALUE index = ibf_load_small_value(load, &reading_pos);
+        rb_ary_push(ary, ibf_load_object(load, index));
+    }
+
+    if (header->internal) rb_obj_hide(ary);
+    if (header->frozen)   rb_obj_freeze(ary);
+
+    return ary;
+}
+
+static int
+ibf_dump_object_hash_i(st_data_t key, st_data_t val, st_data_t ptr)
+{
+    struct ibf_dump *dump = (struct ibf_dump *)ptr;
+
+    VALUE key_index = ibf_dump_object(dump, (VALUE)key);
+    VALUE val_index = ibf_dump_object(dump, (VALUE)val);
+
+    ibf_dump_write_small_value(dump, key_index);
+    ibf_dump_write_small_value(dump, val_index);
+    return ST_CONTINUE;
+}
+
+static void
+ibf_dump_object_hash(struct ibf_dump *dump, VALUE obj)
+{
+    long len = RHASH_SIZE(obj);
+    ibf_dump_write_small_value(dump, (VALUE)len);
+
+    if (len > 0) rb_hash_foreach(obj, ibf_dump_object_hash_i, (VALUE)dump);
+}
+
+static VALUE
+ibf_load_object_hash(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    long len = (long)ibf_load_small_value(load, &offset);
+    VALUE obj = rb_hash_new_with_size(len);
+    int i;
+
+    for (i = 0; i < len; i++) {
+        VALUE key_index = ibf_load_small_value(load, &offset);
+        VALUE val_index = ibf_load_small_value(load, &offset);
+
+        VALUE key = ibf_load_object(load, key_index);
+        VALUE val = ibf_load_object(load, val_index);
+        rb_hash_aset(obj, key, val);
+    }
+    rb_hash_rehash(obj);
+
+    if (header->internal) rb_obj_hide(obj);
+    if (header->frozen)   rb_obj_freeze(obj);
+
+    return obj;
+}
+
+static void
+ibf_dump_object_struct(struct ibf_dump *dump, VALUE obj)
+{
+    if (rb_obj_is_kind_of(obj, rb_cRange)) {
+        struct ibf_object_struct_range range;
+        VALUE beg, end;
+        IBF_ZERO(range);
+        range.len = 3;
+        range.class_index = 0;
+
+        rb_range_values(obj, &beg, &end, &range.excl);
+        range.beg = (long)ibf_dump_object(dump, beg);
+        range.end = (long)ibf_dump_object(dump, end);
+
+        IBF_W_ALIGN(struct ibf_object_struct_range);
+        IBF_WV(range);
+    }
+    else {
+        rb_raise(rb_eNotImpError, "ibf_dump_object_struct: unsupported class %"PRIsVALUE,
+                 rb_class_name(CLASS_OF(obj)));
+    }
+}
+
+static VALUE
+ibf_load_object_struct(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    const struct ibf_object_struct_range *range = IBF_OBJBODY(struct ibf_object_struct_range, offset);
+    VALUE beg = ibf_load_object(load, range->beg);
+    VALUE end = ibf_load_object(load, range->end);
+    VALUE obj = rb_range_new(beg, end, range->excl);
+    if (header->internal) rb_obj_hide(obj);
+    if (header->frozen)   rb_obj_freeze(obj);
+    return obj;
+}
+
+static void
+ibf_dump_object_bignum(struct ibf_dump *dump, VALUE obj)
+{
+    ssize_t len = BIGNUM_LEN(obj);
+    ssize_t slen = BIGNUM_SIGN(obj) > 0 ? len : len * -1;
+    BDIGIT *d = BIGNUM_DIGITS(obj);
+
+    (void)IBF_W(&slen, ssize_t, 1);
+    IBF_WP(d, BDIGIT, len);
+}
+
+static VALUE
+ibf_load_object_bignum(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    const struct ibf_object_bignum *bignum = IBF_OBJBODY(struct ibf_object_bignum, offset);
+    int sign = bignum->slen > 0;
+    ssize_t len = sign > 0 ? bignum->slen : -1 * bignum->slen;
+    VALUE obj = rb_integer_unpack(bignum->digits, len * 2, 2, 0,
+				  INTEGER_PACK_LITTLE_ENDIAN | (sign == 0 ? INTEGER_PACK_NEGATIVE : 0));
+    if (header->internal) rb_obj_hide(obj);
+    if (header->frozen)   rb_obj_freeze(obj);
+    return obj;
+}
+
+static void
+ibf_dump_object_data(struct ibf_dump *dump, VALUE obj)
+{
+    if (rb_data_is_encoding(obj)) {
+        rb_encoding *enc = rb_to_encoding(obj);
+        const char *name = rb_enc_name(enc);
+        long len = strlen(name) + 1;
+        long data[2];
+        data[0] = IBF_OBJECT_DATA_ENCODING;
+        data[1] = len;
+        (void)IBF_W(data, long, 2);
+        IBF_WP(name, char, len);
+    }
+    else {
+        ibf_dump_object_unsupported(dump, obj);
+    }
+}
+
+static VALUE
+ibf_load_object_data(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    const long *body = IBF_OBJBODY(long, offset);
+    const enum ibf_object_data_type type = (enum ibf_object_data_type)body[0];
+    /* const long len = body[1]; */
+    const char *data = (const char *)&body[2];
+
+    switch (type) {
+      case IBF_OBJECT_DATA_ENCODING:
+        {
+            VALUE encobj = rb_enc_from_encoding(rb_enc_find(data));
+            return encobj;
+        }
+    }
+
+    return ibf_load_object_unsupported(load, header, offset);
+}
+
+static void
+ibf_dump_object_complex_rational(struct ibf_dump *dump, VALUE obj)
+{
+    long data[2];
+    data[0] = (long)ibf_dump_object(dump, RCOMPLEX(obj)->real);
+    data[1] = (long)ibf_dump_object(dump, RCOMPLEX(obj)->imag);
+
+    (void)IBF_W(data, long, 2);
+}
+
+static VALUE
+ibf_load_object_complex_rational(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    const struct ibf_object_complex_rational *nums = IBF_OBJBODY(struct ibf_object_complex_rational, offset);
+    VALUE a = ibf_load_object(load, nums->a);
+    VALUE b = ibf_load_object(load, nums->b);
+    VALUE obj = header->type == T_COMPLEX ?
+      rb_complex_new(a, b) : rb_rational_new(a, b);
+
+    if (header->internal) rb_obj_hide(obj);
+    if (header->frozen)   rb_obj_freeze(obj);
+    return obj;
+}
+
+static void
+ibf_dump_object_symbol(struct ibf_dump *dump, VALUE obj)
+{
+    VALUE str = rb_sym2str(obj);
+    VALUE str_index = ibf_dump_object(dump, str);
+
+    ibf_dump_write_small_value(dump, str_index);
+}
+
+static VALUE
+ibf_load_object_symbol(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
+{
+    VALUE str_index = ibf_load_small_value(load, &offset);
+    VALUE str = ibf_load_object(load, str_index);
+    ID id = rb_intern_str(str);
+    return ID2SYM(id);
+}
+
+typedef void (*ibf_dump_object_function)(struct ibf_dump *dump, VALUE obj);
+static ibf_dump_object_function dump_object_functions[RUBY_T_MASK+1] = {
+    ibf_dump_object_unsupported, /* T_NONE */
+    ibf_dump_object_unsupported, /* T_OBJECT */
+    ibf_dump_object_class,       /* T_CLASS */
+    ibf_dump_object_unsupported, /* T_MODULE */
+    ibf_dump_object_float,       /* T_FLOAT */
+    ibf_dump_object_string,      /* T_STRING */
+    ibf_dump_object_regexp,      /* T_REGEXP */
+    ibf_dump_object_array,       /* T_ARRAY */
+    ibf_dump_object_hash,        /* T_HASH */
+    ibf_dump_object_struct,      /* T_STRUCT */
+    ibf_dump_object_bignum,      /* T_BIGNUM */
+    ibf_dump_object_unsupported, /* T_FILE */
+    ibf_dump_object_data,        /* T_DATA */
+    ibf_dump_object_unsupported, /* T_MATCH */
+    ibf_dump_object_complex_rational, /* T_COMPLEX */
+    ibf_dump_object_complex_rational, /* T_RATIONAL */
+    ibf_dump_object_unsupported, /* 0x10 */
+    ibf_dump_object_unsupported, /* 0x11 T_NIL */
+    ibf_dump_object_unsupported, /* 0x12 T_TRUE */
+    ibf_dump_object_unsupported, /* 0x13 T_FALSE */
+    ibf_dump_object_symbol,      /* 0x14 T_SYMBOL */
+    ibf_dump_object_unsupported, /* T_FIXNUM */
+    ibf_dump_object_unsupported, /* T_UNDEF */
+    ibf_dump_object_unsupported, /* 0x17 */
+    ibf_dump_object_unsupported, /* 0x18 */
+    ibf_dump_object_unsupported, /* 0x19 */
+    ibf_dump_object_unsupported, /* T_IMEMO 0x1a */
+    ibf_dump_object_unsupported, /* T_NODE 0x1b */
+    ibf_dump_object_unsupported, /* T_ICLASS 0x1c */
+    ibf_dump_object_unsupported, /* T_ZOMBIE 0x1d */
+    ibf_dump_object_unsupported, /* 0x1e */
+    ibf_dump_object_unsupported, /* 0x1f */
+};
+
+static void
+ibf_dump_object_object_header(struct ibf_dump *dump, const struct ibf_object_header header)
+{
+    unsigned char byte =
+        (header.type          << 0) |
+        (header.special_const << 5) |
+        (header.frozen        << 6) |
+        (header.internal      << 7);
+
+    IBF_WV(byte);
+}
+
+static struct ibf_object_header
+ibf_load_object_object_header(const struct ibf_load *load, ibf_offset_t *offset)
+{
+    unsigned char byte = ibf_load_byte(load, offset);
+
+    struct ibf_object_header header;
+    header.type          = (byte >> 0) & 0x1f;
+    header.special_const = (byte >> 5) & 0x01;
+    header.frozen        = (byte >> 6) & 0x01;
+    header.internal      = (byte >> 7) & 0x01;
+
+    return header;
+}
+
+static ibf_offset_t
+ibf_dump_object_object(struct ibf_dump *dump, VALUE obj)
+{
+    struct ibf_object_header obj_header;
+    ibf_offset_t current_offset;
+    IBF_ZERO(obj_header);
+    obj_header.type = TYPE(obj);
+
+    IBF_W_ALIGN(ibf_offset_t);
+    current_offset = ibf_dump_pos(dump);
+
+    if (SPECIAL_CONST_P(obj) &&
+        ! (RB_TYPE_P(obj, T_SYMBOL) ||
+           RB_TYPE_P(obj, T_FLOAT))) {
+        obj_header.special_const = TRUE;
+        obj_header.frozen = TRUE;
+        obj_header.internal = TRUE;
+        ibf_dump_object_object_header(dump, obj_header);
+        ibf_dump_write_small_value(dump, obj);
+    }
+    else {
+        obj_header.internal = SPECIAL_CONST_P(obj) ? FALSE : (RBASIC_CLASS(obj) == 0) ? TRUE : FALSE;
+        obj_header.special_const = FALSE;
+        obj_header.frozen = FL_TEST(obj, FL_FREEZE) ? TRUE : FALSE;
+        ibf_dump_object_object_header(dump, obj_header);
+        (*dump_object_functions[obj_header.type])(dump, obj);
+    }
+
+    return current_offset;
+}
+
+typedef VALUE (*ibf_load_object_function)(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset);
+static ibf_load_object_function load_object_functions[RUBY_T_MASK+1] = {
+    ibf_load_object_unsupported, /* T_NONE */
+    ibf_load_object_unsupported, /* T_OBJECT */
+    ibf_load_object_class,       /* T_CLASS */
+    ibf_load_object_unsupported, /* T_MODULE */
+    ibf_load_object_float,       /* T_FLOAT */
+    ibf_load_object_string,      /* T_STRING */
+    ibf_load_object_regexp,      /* T_REGEXP */
+    ibf_load_object_array,       /* T_ARRAY */
+    ibf_load_object_hash,        /* T_HASH */
+    ibf_load_object_struct,      /* T_STRUCT */
+    ibf_load_object_bignum,      /* T_BIGNUM */
+    ibf_load_object_unsupported, /* T_FILE */
+    ibf_load_object_data,        /* T_DATA */
+    ibf_load_object_unsupported, /* T_MATCH */
+    ibf_load_object_complex_rational, /* T_COMPLEX */
+    ibf_load_object_complex_rational, /* T_RATIONAL */
+    ibf_load_object_unsupported, /* 0x10 */
+    ibf_load_object_unsupported, /* T_NIL */
+    ibf_load_object_unsupported, /* T_TRUE */
+    ibf_load_object_unsupported, /* T_FALSE */
+    ibf_load_object_symbol,
+    ibf_load_object_unsupported, /* T_FIXNUM */
+    ibf_load_object_unsupported, /* T_UNDEF */
+    ibf_load_object_unsupported, /* 0x17 */
+    ibf_load_object_unsupported, /* 0x18 */
+    ibf_load_object_unsupported, /* 0x19 */
+    ibf_load_object_unsupported, /* T_IMEMO 0x1a */
+    ibf_load_object_unsupported, /* T_NODE 0x1b */
+    ibf_load_object_unsupported, /* T_ICLASS 0x1c */
+    ibf_load_object_unsupported, /* T_ZOMBIE 0x1d */
+    ibf_load_object_unsupported, /* 0x1e */
+    ibf_load_object_unsupported, /* 0x1f */
+};
+
+static VALUE
+ibf_load_object(const struct ibf_load *load, VALUE object_index)
+{
+    if (object_index == 0) {
+        return Qnil;
+    }
+    else {
+        VALUE obj = pinned_list_fetch(load->current_buffer->obj_list, (long)object_index);
+        if (!obj) {
+            ibf_offset_t *offsets = (ibf_offset_t *)(load->current_buffer->obj_list_offset + load->current_buffer->buff);
+            ibf_offset_t offset = offsets[object_index];
+            const struct ibf_object_header header = ibf_load_object_object_header(load, &offset);
+
+#if IBF_ISEQ_DEBUG
+            fprintf(stderr, "ibf_load_object: list=%#x offsets=%p offset=%#x\n",
+                    load->current_buffer->obj_list_offset, (void *)offsets, offset);
+            fprintf(stderr, "ibf_load_object: type=%#x special=%d frozen=%d internal=%d\n",
+                    header.type, header.special_const, header.frozen, header.internal);
+#endif
+            if (offset >= load->current_buffer->size) {
+                rb_raise(rb_eIndexError, "object offset out of range: %u", offset);
+            }
+
+            if (header.special_const) {
+                ibf_offset_t reading_pos = offset;
+
+                obj = ibf_load_small_value(load, &reading_pos);
+            }
+            else {
+                obj = (*load_object_functions[header.type])(load, &header, offset);
+            }
+
+            pinned_list_store(load->current_buffer->obj_list, (long)object_index, obj);
+        }
+#if IBF_ISEQ_DEBUG
+        fprintf(stderr, "ibf_load_object: index=%#"PRIxVALUE" obj=%#"PRIxVALUE"\n",
+                object_index, obj);
+#endif
+        return obj;
+    }
+}
+
+struct ibf_dump_object_list_arg
+{
+    struct ibf_dump *dump;
+    VALUE offset_list;
+};
+
+static int
+ibf_dump_object_list_i(st_data_t key, st_data_t val, st_data_t ptr)
+{
+    VALUE obj = (VALUE)key;
+    struct ibf_dump_object_list_arg *args = (struct ibf_dump_object_list_arg *)ptr;
+
+    ibf_offset_t offset = ibf_dump_object_object(args->dump, obj);
+    rb_ary_push(args->offset_list, UINT2NUM(offset));
+
+    return ST_CONTINUE;
+}
+
+static void
+ibf_dump_object_list(struct ibf_dump *dump, ibf_offset_t *obj_list_offset, unsigned int *obj_list_size)
+{
+    st_table *obj_table = dump->current_buffer->obj_table;
+    VALUE offset_list = rb_ary_tmp_new(obj_table->num_entries);
+
+    struct ibf_dump_object_list_arg args;
+    args.dump = dump;
+    args.offset_list = offset_list;
+
+    st_foreach(obj_table, ibf_dump_object_list_i, (st_data_t)&args);
+
+    IBF_W_ALIGN(ibf_offset_t);
+    *obj_list_offset = ibf_dump_pos(dump);
+
+    st_index_t size = obj_table->num_entries;
+    st_index_t i;
+
+    for (i=0; i<size; i++) {
+        ibf_offset_t offset = NUM2UINT(RARRAY_AREF(offset_list, i));
+        IBF_WV(offset);
+    }
+
+    *obj_list_size = (unsigned int)size;
+}
+
+static void
+ibf_dump_mark(void *ptr)
+{
+    struct ibf_dump *dump = (struct ibf_dump *)ptr;
+    rb_gc_mark(dump->global_buffer.str);
+
+    rb_mark_set(dump->global_buffer.obj_table);
+    rb_mark_set(dump->iseq_table);
+}
+
+static void
+ibf_dump_free(void *ptr)
+{
+    struct ibf_dump *dump = (struct ibf_dump *)ptr;
+    if (dump->global_buffer.obj_table) {
+        st_free_table(dump->global_buffer.obj_table);
+        dump->global_buffer.obj_table = 0;
+    }
+    if (dump->iseq_table) {
+        st_free_table(dump->iseq_table);
+        dump->iseq_table = 0;
+    }
+    ruby_xfree(dump);
+}
+
+static size_t
+ibf_dump_memsize(const void *ptr)
+{
+    struct ibf_dump *dump = (struct ibf_dump *)ptr;
+    size_t size = sizeof(*dump);
+    if (dump->iseq_table) size += st_memsize(dump->iseq_table);
+    if (dump->global_buffer.obj_table) size += st_memsize(dump->global_buffer.obj_table);
+    return size;
+}
+
+static const rb_data_type_t ibf_dump_type = {
+    "ibf_dump",
+    {ibf_dump_mark, ibf_dump_free, ibf_dump_memsize,},
+    0, 0, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+static void
+ibf_dump_setup(struct ibf_dump *dump, VALUE dumper_obj)
+{
+    dump->global_buffer.obj_table = NULL; // GC may run before a value is assigned
+    dump->iseq_table = NULL;
+
+    RB_OBJ_WRITE(dumper_obj, &dump->global_buffer.str, rb_str_new(0, 0));
+    dump->global_buffer.obj_table = ibf_dump_object_table_new();
+    dump->iseq_table = st_init_numtable(); /* need free */
+
+    dump->current_buffer = &dump->global_buffer;
+}
+
+VALUE
+rb_iseq_ibf_dump(const rb_iseq_t *iseq, VALUE opt)
+{
+    struct ibf_dump *dump;
+    struct ibf_header header = {{0}};
+    VALUE dump_obj;
+    VALUE str;
+
+    if (iseq->body->parent_iseq != NULL ||
+        iseq->body->local_iseq != iseq) {
+        rb_raise(rb_eRuntimeError, "should be top of iseq");
+    }
+    if (RTEST(ISEQ_COVERAGE(iseq))) {
+        rb_raise(rb_eRuntimeError, "should not compile with coverage");
+    }
+
+    dump_obj = TypedData_Make_Struct(0, struct ibf_dump, &ibf_dump_type, dump);
+    ibf_dump_setup(dump, dump_obj);
+
+    ibf_dump_write(dump, &header, sizeof(header));
+    ibf_dump_write(dump, RUBY_PLATFORM, strlen(RUBY_PLATFORM) + 1);
+    ibf_dump_iseq(dump, iseq);
+
+    header.magic[0] = 'Y'; /* YARB */
+    header.magic[1] = 'A';
+    header.magic[2] = 'R';
+    header.magic[3] = 'B';
+    header.major_version = IBF_MAJOR_VERSION;
+    header.minor_version = IBF_MINOR_VERSION;
+    ibf_dump_iseq_list(dump, &header);
+    ibf_dump_object_list(dump, &header.global_object_list_offset, &header.global_object_list_size);
+    header.size = ibf_dump_pos(dump);
+
+    if (RTEST(opt)) {
+        VALUE opt_str = opt;
+        const char *ptr = StringValuePtr(opt_str);
+        header.extra_size = RSTRING_LENINT(opt_str);
+        ibf_dump_write(dump, ptr, header.extra_size);
+    }
+    else {
+        header.extra_size = 0;
+    }
+
+    ibf_dump_overwrite(dump, &header, sizeof(header), 0);
+
+    str = dump->global_buffer.str;
+    ibf_dump_free(dump);
+    DATA_PTR(dump_obj) = NULL;
+    RB_GC_GUARD(dump_obj);
+    return str;
+}
+
+static const ibf_offset_t *
+ibf_iseq_list(const struct ibf_load *load)
+{
+    return (const ibf_offset_t *)(load->global_buffer.buff + load->header->iseq_list_offset);
+}
+
+void
+rb_ibf_load_iseq_complete(rb_iseq_t *iseq)
+{
+    struct ibf_load *load = RTYPEDDATA_DATA(iseq->aux.loader.obj);
+    rb_iseq_t *prev_src_iseq = load->iseq;
+    ibf_offset_t offset = ibf_iseq_list(load)[iseq->aux.loader.index];
+    load->iseq = iseq;
+#if IBF_ISEQ_DEBUG
+    fprintf(stderr, "rb_ibf_load_iseq_complete: index=%#x offset=%#x size=%#x\n",
+	    iseq->aux.loader.index, offset,
+	    load->header->size);
+#endif
+    ibf_load_iseq_each(load, iseq, offset);
+    ISEQ_COMPILE_DATA_CLEAR(iseq);
+    FL_UNSET((VALUE)iseq, ISEQ_NOT_LOADED_YET);
+    rb_iseq_init_trace(iseq);
+    load->iseq = prev_src_iseq;
+}
+
+#if USE_LAZY_LOAD
+MJIT_FUNC_EXPORTED const rb_iseq_t *
+rb_iseq_complete(const rb_iseq_t *iseq)
+{
+    rb_ibf_load_iseq_complete((rb_iseq_t *)iseq);
+    return iseq;
+}
+#endif
+
+static rb_iseq_t *
+ibf_load_iseq(const struct ibf_load *load, const rb_iseq_t *index_iseq)
+{
+    int iseq_index = (int)(VALUE)index_iseq;
+
+#if IBF_ISEQ_DEBUG
+    fprintf(stderr, "ibf_load_iseq: index_iseq=%p iseq_list=%p\n",
+	    (void *)index_iseq, (void *)load->iseq_list);
+#endif
+    if (iseq_index == -1) {
+	return NULL;
+    }
+    else {
+	VALUE iseqv = pinned_list_fetch(load->iseq_list, iseq_index);
+
+#if IBF_ISEQ_DEBUG
+	fprintf(stderr, "ibf_load_iseq: iseqv=%p\n", (void *)iseqv);
+#endif
+	if (iseqv) {
+	    return (rb_iseq_t *)iseqv;
+	}
+	else {
+	    rb_iseq_t *iseq = iseq_imemo_alloc();
+#if IBF_ISEQ_DEBUG
+	    fprintf(stderr, "ibf_load_iseq: new iseq=%p\n", (void *)iseq);
+#endif
+	    FL_SET((VALUE)iseq, ISEQ_NOT_LOADED_YET);
+	    iseq->aux.loader.obj = load->loader_obj;
+	    iseq->aux.loader.index = iseq_index;
+#if IBF_ISEQ_DEBUG
+	    fprintf(stderr, "ibf_load_iseq: iseq=%p loader_obj=%p index=%d\n",
+		    (void *)iseq, (void *)load->loader_obj, iseq_index);
+#endif
+	    pinned_list_store(load->iseq_list, iseq_index, (VALUE)iseq);
+
+#if !USE_LAZY_LOAD
+#if IBF_ISEQ_DEBUG
+	    fprintf(stderr, "ibf_load_iseq: loading iseq=%p\n", (void *)iseq);
+#endif
+            rb_ibf_load_iseq_complete(iseq);
+#else
+            if (GET_VM()->builtin_function_table) {
+                rb_ibf_load_iseq_complete(iseq);
+            }
+#endif /* !USE_LAZY_LOAD */
+
+#if IBF_ISEQ_DEBUG
+	    fprintf(stderr, "ibf_load_iseq: iseq=%p loaded %p\n",
+		    (void *)iseq, (void *)load->iseq);
+#endif
+	    return iseq;
+	}
+    }
+}
+
+static void
+ibf_load_setup_bytes(struct ibf_load *load, VALUE loader_obj, const char *bytes, size_t size)
+{
+    load->loader_obj = loader_obj;
+    load->global_buffer.buff = bytes;
+    load->header = (struct ibf_header *)load->global_buffer.buff;
+    load->global_buffer.size = load->header->size;
+    load->global_buffer.obj_list_offset = load->header->global_object_list_offset;
+    load->global_buffer.obj_list_size = load->header->global_object_list_size;
+    RB_OBJ_WRITE(loader_obj, &load->iseq_list, pinned_list_new(load->header->iseq_list_size));
+    RB_OBJ_WRITE(loader_obj, &load->global_buffer.obj_list, pinned_list_new(load->global_buffer.obj_list_size));
+    load->iseq = NULL;
+
+    load->current_buffer = &load->global_buffer;
+
+    if (size < load->header->size) {
+	rb_raise(rb_eRuntimeError, "broken binary format");
+    }
+    if (strncmp(load->header->magic, "YARB", 4) != 0) {
+	rb_raise(rb_eRuntimeError, "unknown binary format");
+    }
+    if (load->header->major_version != IBF_MAJOR_VERSION ||
+	load->header->minor_version != IBF_MINOR_VERSION) {
+	rb_raise(rb_eRuntimeError, "unmatched version file (%u.%u for %u.%u)",
+		 load->header->major_version, load->header->minor_version, IBF_MAJOR_VERSION, IBF_MINOR_VERSION);
+    }
+    if (strcmp(load->global_buffer.buff + sizeof(struct ibf_header), RUBY_PLATFORM) != 0) {
+	rb_raise(rb_eRuntimeError, "unmatched platform");
+    }
+    if (load->header->iseq_list_offset % RUBY_ALIGNOF(ibf_offset_t)) {
+        rb_raise(rb_eArgError, "unaligned iseq list offset: %u",
+                 load->header->iseq_list_offset);
+    }
+    if (load->global_buffer.obj_list_offset % RUBY_ALIGNOF(ibf_offset_t)) {
+        rb_raise(rb_eArgError, "unaligned object list offset: %u",
+                 load->global_buffer.obj_list_offset);
+    }
+}
+
+static void
+ibf_load_setup(struct ibf_load *load, VALUE loader_obj, VALUE str)
+{
+    if (RSTRING_LENINT(str) < (int)sizeof(struct ibf_header)) {
+        rb_raise(rb_eRuntimeError, "broken binary format");
+    }
+
+#if USE_LAZY_LOAD
+    str = rb_str_new(RSTRING_PTR(str), RSTRING_LEN(str));
+#endif
+
+    ibf_load_setup_bytes(load, loader_obj, StringValuePtr(str), RSTRING_LEN(str));
+    RB_OBJ_WRITE(loader_obj, &load->str, str);
+}
+
+static void
+ibf_loader_mark(void *ptr)
+{
+    struct ibf_load *load = (struct ibf_load *)ptr;
+    rb_gc_mark(load->str);
+    rb_gc_mark(load->iseq_list);
+    rb_gc_mark(load->global_buffer.obj_list);
+}
+
+static void
+ibf_loader_free(void *ptr)
+{
+    struct ibf_load *load = (struct ibf_load *)ptr;
+    ruby_xfree(load);
+}
+
+static size_t
+ibf_loader_memsize(const void *ptr)
+{
+    return sizeof(struct ibf_load);
+}
+
+static const rb_data_type_t ibf_load_type = {
+    "ibf_loader",
+    {ibf_loader_mark, ibf_loader_free, ibf_loader_memsize,},
+    0, 0, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+const rb_iseq_t *
+rb_iseq_ibf_load(VALUE str)
+{
+    struct ibf_load *load;
+    rb_iseq_t *iseq;
+    VALUE loader_obj = TypedData_Make_Struct(0, struct ibf_load, &ibf_load_type, load);
+
+    ibf_load_setup(load, loader_obj, str);
+    iseq = ibf_load_iseq(load, 0);
+
+    RB_GC_GUARD(loader_obj);
+    return iseq;
+}
+
+const rb_iseq_t *
+rb_iseq_ibf_load_bytes(const char *bytes, size_t size)
+{
+    struct ibf_load *load;
+    rb_iseq_t *iseq;
+    VALUE loader_obj = TypedData_Make_Struct(0, struct ibf_load, &ibf_load_type, load);
+
+    ibf_load_setup_bytes(load, loader_obj, bytes, size);
+    iseq = ibf_load_iseq(load, 0);
+
+    RB_GC_GUARD(loader_obj);
+    return iseq;
+}
+
+VALUE
+rb_iseq_ibf_load_extra_data(VALUE str)
 {
-    return GET_THREAD()->parse_in_eval < 0;
+    struct ibf_load *load;
+    VALUE loader_obj = TypedData_Make_Struct(0, struct ibf_load, &ibf_load_type, load);
+    VALUE extra_str;
+
+    ibf_load_setup(load, loader_obj, str);
+    extra_str = rb_str_new(load->global_buffer.buff + load->header->size, load->header->extra_size);
+    RB_GC_GUARD(loader_obj);
+    return extra_str;
 }
diff --git a/complex.c b/complex.c
index b3b55c6856..27c1f131e3 100644
--- a/complex.c
+++ b/complex.c
@@ -1,40 +1,63 @@
 /*
-  complex.c: Coded by Tadayoshi Funaba 2008
+  complex.c: Coded by Tadayoshi Funaba 2008-2012
 
   This implementation is based on Keiju Ishitsuka's Complex library
   which is written in ruby.
 */
 
-#include "ruby.h"
+#include "ruby/internal/config.h"
+
+#if defined _MSC_VER
+/* Microsoft Visual C does not define M_PI and others by default */
+# define _USE_MATH_DEFINES 1
+#endif
+
+#include <ctype.h>
 #include <math.h>
 
+#undef NDEBUG
 #define NDEBUG
-#include <assert.h>
-
-#ifndef COMPLEX_NAME
-#define COMPLEX_NAME "Complex"
-#endif
+#include "id.h"
+#include "internal.h"
+#include "internal/array.h"
+#include "internal/class.h"
+#include "internal/complex.h"
+#include "internal/math.h"
+#include "internal/numeric.h"
+#include "internal/object.h"
+#include "internal/rational.h"
+#include "ruby_assert.h"
 
 #define ZERO INT2FIX(0)
 #define ONE INT2FIX(1)
 #define TWO INT2FIX(2)
+#if USE_FLONUM
+#define RFLOAT_0 DBL2NUM(0)
+#else
+static VALUE RFLOAT_0;
+#endif
+#if defined(HAVE_SIGNBIT) && defined(__GNUC__) && defined(__sun) && \
+    !defined(signbit)
+extern int signbit(double);
+#endif
 
 VALUE rb_cComplex;
 
-static ID id_abs, id_abs2, id_arg, id_cmp, id_conj, id_convert,
-    id_denominator, id_divmod, id_equal_p, id_expt, id_floor, id_hash,
-    id_idiv, id_inspect, id_negate, id_numerator, id_polar, id_quo,
-    id_real_p, id_to_f, id_to_i, id_to_r, id_to_s;
+static ID id_abs, id_arg,
+    id_denominator, id_numerator,
+    id_real_p, id_i_real, id_i_imag,
+    id_finite_p, id_infinite_p, id_rationalize,
+    id_PI;
+#define id_to_i idTo_i
+#define id_to_r idTo_r
+#define id_negate idUMinus
+#define id_expt idPow
+#define id_to_f idTo_f
+#define id_quo idQuo
+#define id_fdiv idFdiv
 
 #define f_boolcast(x) ((x) ? Qtrue : Qfalse)
 
-#define binop(n,op) \
-inline static VALUE \
-f_##n(VALUE x, VALUE y)\
-{\
-    return rb_funcall(x, op, 1, y);\
-}
-
 #define fun1(n) \
 inline static VALUE \
 f_##n(VALUE x)\
@@ -49,46 +72,33 @@ f_##n(VALUE x, VALUE y)\
     return rb_funcall(x, id_##n, 1, y);\
 }
 
-#define math1(n) \
-inline static VALUE \
-m_##n(VALUE x)\
-{\
-    return rb_funcall(rb_mMath, id_##n, 1, x);\
-}
-
-#define math2(n) \
-inline static VALUE \
-m_##n(VALUE x, VALUE y)\
-{\
-    return rb_funcall(rb_mMath, id_##n, 2, x, y);\
-}
-
 #define PRESERVE_SIGNEDZERO
 
 inline static VALUE
 f_add(VALUE x, VALUE y)
 {
-#ifndef PRESERVE_SIGNEDZERO
-    if (FIXNUM_P(y) && FIX2LONG(y) == 0)
-	return x;
-    else if (FIXNUM_P(x) && FIX2LONG(x) == 0)
-	return y;
-#endif
-    return rb_funcall(x, '+', 1, y);
-}
-
-inline static VALUE
-f_cmp(VALUE x, VALUE y)
-{
-    if (FIXNUM_P(x) && FIXNUM_P(y)) {
-	long c = FIX2LONG(x) - FIX2LONG(y);
-	if (c > 0)
-	    c = 1;
-	else if (c < 0)
-	    c = -1;
-	return INT2FIX(c);
+    if (RB_INTEGER_TYPE_P(x) &&
+        LIKELY(rb_method_basic_definition_p(rb_cInteger, idPLUS))) {
+        if (FIXNUM_ZERO_P(x))
+            return y;
+        if (FIXNUM_ZERO_P(y))
+            return x;
+        return rb_int_plus(x, y);
+    }
+    else if (RB_FLOAT_TYPE_P(x) &&
+             LIKELY(rb_method_basic_definition_p(rb_cFloat, idPLUS))) {
+        if (FIXNUM_ZERO_P(y))
+            return x;
+        return rb_float_plus(x, y);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL) &&
+             LIKELY(rb_method_basic_definition_p(rb_cRational, idPLUS))) {
+        if (FIXNUM_ZERO_P(y))
+            return x;
+        return rb_rational_plus(x, y);
     }
-    return rb_funcall(x, id_cmp, 1, y);
+
+    return rb_funcall(x, '+', 1, y);
 }
 
 inline static VALUE
@@ -99,178 +109,301 @@ f_div(VALUE x, VALUE y)
     return rb_funcall(x, '/', 1, y);
 }
 
-inline static VALUE
+inline static int
 f_gt_p(VALUE x, VALUE y)
 {
-    if (FIXNUM_P(x) && FIXNUM_P(y))
-	return f_boolcast(FIX2LONG(x) > FIX2LONG(y));
-    return rb_funcall(x, '>', 1, y);
-}
-
-inline static VALUE
-f_lt_p(VALUE x, VALUE y)
-{
-    if (FIXNUM_P(x) && FIXNUM_P(y))
-	return f_boolcast(FIX2LONG(x) < FIX2LONG(y));
-    return rb_funcall(x, '<', 1, y);
+    if (RB_INTEGER_TYPE_P(x)) {
+        if (FIXNUM_P(x) && FIXNUM_P(y))
+            return (SIGNED_VALUE)x > (SIGNED_VALUE)y;
+        return RTEST(rb_int_gt(x, y));
+    }
+    else if (RB_FLOAT_TYPE_P(x))
+        return RTEST(rb_float_gt(x, y));
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        int const cmp = rb_cmpint(rb_rational_cmp(x, y), x, y);
+        return cmp > 0;
+    }
+    return RTEST(rb_funcall(x, '>', 1, y));
 }
 
-binop(mod, '%')
-
 inline static VALUE
 f_mul(VALUE x, VALUE y)
 {
-#ifndef PRESERVE_SIGNEDZERO
-    if (FIXNUM_P(y)) {
-	long iy = FIX2LONG(y);
-	if (iy == 0) {
-	    if (FIXNUM_P(x) || TYPE(x) == T_BIGNUM)
-		return ZERO;
-	}
-	else if (iy == 1)
-	    return x;
-    }
-    else if (FIXNUM_P(x)) {
-	long ix = FIX2LONG(x);
-	if (ix == 0) {
-	    if (FIXNUM_P(y) || TYPE(y) == T_BIGNUM)
-		return ZERO;
-	}
-	else if (ix == 1)
-	    return y;
+    if (RB_INTEGER_TYPE_P(x) &&
+        LIKELY(rb_method_basic_definition_p(rb_cInteger, idMULT))) {
+        if (FIXNUM_ZERO_P(y))
+            return ZERO;
+        if (FIXNUM_ZERO_P(x) && RB_INTEGER_TYPE_P(y))
+            return ZERO;
+        if (x == ONE) return y;
+        if (y == ONE) return x;
+        return rb_int_mul(x, y);
+    }
+    else if (RB_FLOAT_TYPE_P(x) &&
+             LIKELY(rb_method_basic_definition_p(rb_cFloat, idMULT))) {
+        if (y == ONE) return x;
+        return rb_float_mul(x, y);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL) &&
+             LIKELY(rb_method_basic_definition_p(rb_cRational, idMULT))) {
+        if (y == ONE) return x;
+        return rb_rational_mul(x, y);
+    }
+    else if (LIKELY(rb_method_basic_definition_p(CLASS_OF(x), idMULT))) {
+        if (y == ONE) return x;
     }
-#endif
     return rb_funcall(x, '*', 1, y);
 }
 
 inline static VALUE
 f_sub(VALUE x, VALUE y)
 {
-#ifndef PRESERVE_SIGNEDZERO
-    if (FIXNUM_P(y) && FIX2LONG(y) == 0)
+    if (FIXNUM_ZERO_P(y) &&
+        LIKELY(rb_method_basic_definition_p(CLASS_OF(x), idMINUS))) {
 	return x;
-#endif
+    }
     return rb_funcall(x, '-', 1, y);
 }
 
-binop(xor, '^')
-
-fun1(abs)
-fun1(abs2)
-fun1(arg)
-fun1(conj)
-fun1(denominator)
-fun1(floor)
-fun1(hash)
-fun1(inspect)
-fun1(negate)
-fun1(numerator)
-fun1(polar)
-fun1(real_p)
-
-fun1(to_f)
-fun1(to_i)
-fun1(to_r)
-fun1(to_s)
+inline static VALUE
+f_abs(VALUE x)
+{
+    if (RB_INTEGER_TYPE_P(x)) {
+        return rb_int_abs(x);
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+        return rb_float_abs(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        return rb_rational_abs(x);
+    }
+    else if (RB_TYPE_P(x, T_COMPLEX)) {
+        return rb_complex_abs(x);
+    }
+    return rb_funcall(x, id_abs, 0);
+}
 
-fun2(divmod)
+static VALUE numeric_arg(VALUE self);
+static VALUE float_arg(VALUE self);
 
 inline static VALUE
-f_equal_p(VALUE x, VALUE y)
+f_arg(VALUE x)
 {
-    if (FIXNUM_P(x) && FIXNUM_P(y))
-	return f_boolcast(FIX2LONG(x) == FIX2LONG(y));
-    return rb_funcall(x, id_equal_p, 1, y);
+    if (RB_INTEGER_TYPE_P(x)) {
+        return numeric_arg(x);
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+        return float_arg(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        return numeric_arg(x);
+    }
+    else if (RB_TYPE_P(x, T_COMPLEX)) {
+        return rb_complex_arg(x);
+    }
+    return rb_funcall(x, id_arg, 0);
 }
 
-fun2(expt)
-fun2(idiv)
-fun2(quo)
-
 inline static VALUE
-f_negative_p(VALUE x)
+f_numerator(VALUE x)
 {
-    if (FIXNUM_P(x))
-	return f_boolcast(FIX2LONG(x) < 0);
-    return rb_funcall(x, '<', 1, ZERO);
+    if (RB_TYPE_P(x, T_RATIONAL)) {
+        return RRATIONAL(x)->num;
+    }
+    if (RB_FLOAT_TYPE_P(x)) {
+        return rb_float_numerator(x);
+    }
+    return x;
 }
 
-#define f_positive_p(x) (!f_negative_p(x))
+inline static VALUE
+f_denominator(VALUE x)
+{
+    if (RB_TYPE_P(x, T_RATIONAL)) {
+        return RRATIONAL(x)->den;
+    }
+    if (RB_FLOAT_TYPE_P(x)) {
+        return rb_float_denominator(x);
+    }
+    return INT2FIX(1);
+}
 
 inline static VALUE
-f_zero_p(VALUE x)
+f_negate(VALUE x)
 {
-    if (FIXNUM_P(x))
-	return f_boolcast(FIX2LONG(x) == 0);
-    return rb_funcall(x, id_equal_p, 1, ZERO);
+    if (RB_INTEGER_TYPE_P(x)) {
+        return rb_int_uminus(x);
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+        return rb_float_uminus(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        return rb_rational_uminus(x);
+    }
+    else if (RB_TYPE_P(x, T_COMPLEX)) {
+        return rb_complex_uminus(x);
+    }
+    return rb_funcall(x, id_negate, 0);
 }
 
-#define f_nonzero_p(x) (!f_zero_p(x))
+static bool nucomp_real_p(VALUE self);
 
-inline static VALUE
-f_one_p(VALUE x)
+static inline bool
+f_real_p(VALUE x)
 {
-    if (FIXNUM_P(x))
-	return f_boolcast(FIX2LONG(x) == 1);
-    return rb_funcall(x, id_equal_p, 1, ONE);
+    if (RB_INTEGER_TYPE_P(x)) {
+        return true;
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+        return true;
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        return true;
+    }
+    else if (RB_TYPE_P(x, T_COMPLEX)) {
+        return nucomp_real_p(x);
+    }
+    return rb_funcall(x, id_real_p, 0);
 }
 
 inline static VALUE
-f_kind_of_p(VALUE x, VALUE c)
+f_to_i(VALUE x)
 {
-    return rb_obj_is_kind_of(x, c);
+    if (RB_TYPE_P(x, T_STRING))
+	return rb_str_to_inum(x, 10, 0);
+    return rb_funcall(x, id_to_i, 0);
 }
 
 inline static VALUE
-k_numeric_p(VALUE x)
+f_to_f(VALUE x)
 {
-    return f_kind_of_p(x, rb_cNumeric);
+    if (RB_TYPE_P(x, T_STRING))
+	return DBL2NUM(rb_str_to_dbl(x, 0));
+    return rb_funcall(x, id_to_f, 0);
 }
 
-inline static VALUE
-k_integer_p(VALUE x)
+fun1(to_r)
+
+inline static int
+f_eqeq_p(VALUE x, VALUE y)
 {
-    return f_kind_of_p(x, rb_cInteger);
+    if (FIXNUM_P(x) && FIXNUM_P(y))
+	return x == y;
+    else if (RB_FLOAT_TYPE_P(x) || RB_FLOAT_TYPE_P(y))
+	return NUM2DBL(x) == NUM2DBL(y);
+    return (int)rb_equal(x, y);
 }
 
-inline static VALUE
-k_float_p(VALUE x)
+fun2(expt)
+fun2(fdiv)
+
+static VALUE
+f_quo(VALUE x, VALUE y)
 {
-    return f_kind_of_p(x, rb_cFloat);
+    if (RB_INTEGER_TYPE_P(x))
+        return rb_numeric_quo(x, y);
+    if (RB_FLOAT_TYPE_P(x))
+        return rb_float_div(x, y);
+    if (RB_TYPE_P(x, T_RATIONAL))
+        return rb_numeric_quo(x, y);
+
+    return rb_funcallv(x, id_quo, 1, &y);
 }
 
-inline static VALUE
-k_rational_p(VALUE x)
+inline static int
+f_negative_p(VALUE x)
 {
-    return f_kind_of_p(x, rb_cRational);
+    if (RB_INTEGER_TYPE_P(x))
+        return INT_NEGATIVE_P(x);
+    else if (RB_FLOAT_TYPE_P(x))
+        return RFLOAT_VALUE(x) < 0.0;
+    else if (RB_TYPE_P(x, T_RATIONAL))
+        return INT_NEGATIVE_P(RRATIONAL(x)->num);
+    return rb_num_negative_p(x);
 }
 
+#define f_positive_p(x) (!f_negative_p(x))
+
+inline static int
+f_zero_p(VALUE x)
+{
+    if (RB_FLOAT_TYPE_P(x)) {
+        return FLOAT_ZERO_P(x);
+    }
+    else if (RB_INTEGER_TYPE_P(x)) {
+        return FIXNUM_ZERO_P(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        const VALUE num = RRATIONAL(x)->num;
+        return FIXNUM_ZERO_P(num);
+    }
+    return (int)rb_equal(x, ZERO);
+}
+
+#define f_nonzero_p(x) (!f_zero_p(x))
+
+VALUE rb_flo_is_finite_p(VALUE num);
+inline static int
+f_finite_p(VALUE x)
+{
+    if (RB_INTEGER_TYPE_P(x)) {
+        return TRUE;
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+	return (int)rb_flo_is_finite_p(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+	return TRUE;
+    }
+    return RTEST(rb_funcallv(x, id_finite_p, 0, 0));
+}
+
+VALUE rb_flo_is_infinite_p(VALUE num);
 inline static VALUE
-k_complex_p(VALUE x)
+f_infinite_p(VALUE x)
 {
-    return f_kind_of_p(x, rb_cComplex);
+    if (RB_INTEGER_TYPE_P(x)) {
+        return Qnil;
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+	return rb_flo_is_infinite_p(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        return Qnil;
+    }
+    return rb_funcallv(x, id_infinite_p, 0, 0);
+}
+
+inline static int
+f_kind_of_p(VALUE x, VALUE c)
+{
+    return (int)rb_obj_is_kind_of(x, c);
+}
+
+inline static int
+k_numeric_p(VALUE x)
+{
+    return f_kind_of_p(x, rb_cNumeric);
 }
 
-#define k_exact_p(x) (!k_float_p(x))
-#define k_inexact_p(x) k_float_p(x)
+#define k_exact_p(x) (!RB_FLOAT_TYPE_P(x))
+
+#define k_exact_zero_p(x) (k_exact_p(x) && f_zero_p(x))
 
 #define get_dat1(x) \
-    struct RComplex *dat;\
-    dat = ((struct RComplex *)(x))
+    struct RComplex *dat = RCOMPLEX(x)
 
 #define get_dat2(x,y) \
-    struct RComplex *adat, *bdat;\
-    adat = ((struct RComplex *)(x));\
-    bdat = ((struct RComplex *)(y))
+    struct RComplex *adat = RCOMPLEX(x), *bdat = RCOMPLEX(y)
 
 inline static VALUE
 nucomp_s_new_internal(VALUE klass, VALUE real, VALUE imag)
 {
-    NEWOBJ(obj, struct RComplex);
-    OBJSETUP(obj, klass, T_COMPLEX);
+    NEWOBJ_OF(obj, struct RComplex, klass, T_COMPLEX | (RGENGC_WB_PROTECTED_COMPLEX ? FL_WB_PROTECTED : 0));
 
-    obj->real = real;
-    obj->imag = imag;
+    RCOMPLEX_SET_REAL(obj, real);
+    RCOMPLEX_SET_IMAG(obj, imag);
+    OBJ_FREEZE_RAW((VALUE)obj);
 
     return (VALUE)obj;
 }
@@ -281,97 +414,49 @@ nucomp_s_alloc(VALUE klass)
     return nucomp_s_new_internal(klass, ZERO, ZERO);
 }
 
-#if 0
-static VALUE
-nucomp_s_new_bang(int argc, VALUE *argv, VALUE klass)
-{
-    VALUE real, imag;
-
-    switch (rb_scan_args(argc, argv, "11", &real, &imag)) {
-      case 1:
-	if (!k_numeric_p(real))
-	    real = f_to_i(real);
-	imag = ZERO;
-	break;
-      default:
-	if (!k_numeric_p(real))
-	    real = f_to_i(real);
-	if (!k_numeric_p(imag))
-	    imag = f_to_i(imag);
-	break;
-    }
-
-    return nucomp_s_new_internal(klass, real, imag);
-}
-#endif
-
 inline static VALUE
 f_complex_new_bang1(VALUE klass, VALUE x)
 {
-    assert(!k_complex_p(x));
+    assert(!RB_TYPE_P(x, T_COMPLEX));
     return nucomp_s_new_internal(klass, x, ZERO);
 }
 
 inline static VALUE
 f_complex_new_bang2(VALUE klass, VALUE x, VALUE y)
 {
-    assert(!k_complex_p(x));
-    assert(!k_complex_p(y));
+    assert(!RB_TYPE_P(x, T_COMPLEX));
+    assert(!RB_TYPE_P(y, T_COMPLEX));
     return nucomp_s_new_internal(klass, x, y);
 }
 
-#ifdef CANONICALIZATION_FOR_MATHN
-#define CANON
-#endif
-
-#ifdef CANON
-static int canonicalization = 0;
-
-void
-nucomp_canonicalization(int f)
-{
-    canonicalization = f;
-}
-#endif
-
 inline static void
 nucomp_real_check(VALUE num)
 {
-    switch (TYPE(num)) {
-      case T_FIXNUM:
-      case T_BIGNUM:
-      case T_FLOAT:
-      case T_RATIONAL:
-	break;
-      default:
+    if (!RB_INTEGER_TYPE_P(num) &&
+	!RB_FLOAT_TYPE_P(num) &&
+	!RB_TYPE_P(num, T_RATIONAL)) {
 	if (!k_numeric_p(num) || !f_real_p(num))
-	    rb_raise(rb_eArgError, "not a real");
+	    rb_raise(rb_eTypeError, "not a real");
     }
 }
 
 inline static VALUE
 nucomp_s_canonicalize_internal(VALUE klass, VALUE real, VALUE imag)
 {
-#ifdef CANON
-#define CL_CANON
-#ifdef CL_CANON
-    if (f_zero_p(imag) && k_exact_p(imag) && canonicalization)
-	return real;
-#else
-    if (f_zero_p(imag) && canonicalization)
-	return real;
-#endif
-#endif
-    if (f_real_p(real) && f_real_p(imag))
+    int complex_r, complex_i;
+    complex_r = RB_TYPE_P(real, T_COMPLEX);
+    complex_i = RB_TYPE_P(imag, T_COMPLEX);
+    if (!complex_r && !complex_i) {
 	return nucomp_s_new_internal(klass, real, imag);
-    else if (f_real_p(real)) {
+    }
+    else if (!complex_r) {
 	get_dat1(imag);
 
 	return nucomp_s_new_internal(klass,
 				     f_sub(real, dat->imag),
 				     f_add(ZERO, dat->real));
     }
-    else if (f_real_p(imag)) {
+    else if (!complex_i) {
 	get_dat1(real);
 
 	return nucomp_s_new_internal(klass,
@@ -387,6 +472,15 @@ nucomp_s_canonicalize_internal(VALUE klass, VALUE real, VALUE imag)
     }
 }
 
+/*
+ * call-seq:
+ *    Complex.rect(real[, imag])         ->  complex
+ *    Complex.rectangular(real[, imag])  ->  complex
+ *
+ * Returns a complex object which denotes the given rectangular form.
+ *
+ *    Complex.rectangular(1, 2)  #=> (1+2i)
+ */
 static VALUE
 nucomp_s_new(int argc, VALUE *argv, VALUE klass)
 {
@@ -407,50 +501,79 @@ nucomp_s_new(int argc, VALUE *argv, VALUE klass)
 }
 
 inline static VALUE
-f_complex_new1(VALUE klass, VALUE x)
-{
-    assert(!k_complex_p(x));
-    return nucomp_s_canonicalize_internal(klass, x, ZERO);
-}
-
-inline static VALUE
 f_complex_new2(VALUE klass, VALUE x, VALUE y)
 {
-    assert(!k_complex_p(x));
+    assert(!RB_TYPE_P(x, T_COMPLEX));
     return nucomp_s_canonicalize_internal(klass, x, y);
 }
 
+static VALUE nucomp_convert(VALUE klass, VALUE a1, VALUE a2, int raise);
+static VALUE nucomp_s_convert(int argc, VALUE *argv, VALUE klass);
+
+/*
+ * call-seq:
+ *    Complex(x[, y], exception: true)  ->  numeric or nil
+ *
+ * Returns x+i*y;
+ *
+ *    Complex(1, 2)    #=> (1+2i)
+ *    Complex('1+2i')  #=> (1+2i)
+ *    Complex(nil)     #=> TypeError
+ *    Complex(1, nil)  #=> TypeError
+ *
+ *    Complex(1, nil, exception: false)  #=> nil
+ *    Complex('1+2', exception: false)   #=> nil
+ *
+ * Syntax of string form:
+ *
+ *   string form = extra spaces , complex , extra spaces ;
+ *   complex = real part | [ sign ] , imaginary part
+ *           | real part , sign , imaginary part
+ *           | rational , "@" , rational ;
+ *   real part = rational ;
+ *   imaginary part = imaginary unit | unsigned rational , imaginary unit ;
+ *   rational = [ sign ] , unsigned rational ;
+ *   unsigned rational = numerator | numerator , "/" , denominator ;
+ *   numerator = integer part | fractional part | integer part , fractional part ;
+ *   denominator = digits ;
+ *   integer part = digits ;
+ *   fractional part = "." , digits , [ ( "e" | "E" ) , [ sign ] , digits ] ;
+ *   imaginary unit = "i" | "I" | "j" | "J" ;
+ *   sign = "-" | "+" ;
+ *   digits = digit , { digit | "_" , digit };
+ *   digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
+ *   extra spaces = ? \s* ? ;
+ *
+ * See String#to_c.
+ */
 static VALUE
 nucomp_f_complex(int argc, VALUE *argv, VALUE klass)
 {
-    return rb_funcall2(rb_cComplex, id_convert, argc, argv);
+    VALUE a1, a2, opts = Qnil;
+    int raise = TRUE;
+
+    if (rb_scan_args(argc, argv, "11:", &a1, &a2, &opts) == 1) {
+        a2 = Qundef;
+    }
+    if (!NIL_P(opts)) {
+        raise = rb_opts_exception_p(opts, raise);
+    }
+    if (argc > 0 && CLASS_OF(a1) == rb_cComplex && a2 == Qundef) {
+        return a1;
+    }
+    return nucomp_convert(rb_cComplex, a1, a2, raise);
 }
 
 #define imp1(n) \
-extern VALUE rb_math_##n(VALUE x);\
 inline static VALUE \
 m_##n##_bang(VALUE x)\
 {\
     return rb_math_##n(x);\
 }
 
-#define imp2(n) \
-extern VALUE rb_math_##n(VALUE x, VALUE y);\
-inline static VALUE \
-m_##n##_bang(VALUE x, VALUE y)\
-{\
-    return rb_math_##n(x, y);\
-}
-
-imp2(atan2)
 imp1(cos)
 imp1(cosh)
 imp1(exp)
-imp2(hypot)
-
-#define m_hypot(x,y) m_hypot_bang(x,y)
-
-extern VALUE rb_math_log(int argc, VALUE *argv);
 
 static VALUE
 m_log_bang(VALUE x)
@@ -460,12 +583,11 @@ m_log_bang(VALUE x)
 
 imp1(sin)
 imp1(sinh)
-imp1(sqrt)
 
 static VALUE
 m_cos(VALUE x)
 {
-    if (f_real_p(x))
+    if (!RB_TYPE_P(x, T_COMPLEX))
 	return m_cos_bang(x);
     {
 	get_dat1(x);
@@ -480,7 +602,7 @@ m_cos(VALUE x)
 static VALUE
 m_sin(VALUE x)
 {
-    if (f_real_p(x))
+    if (!RB_TYPE_P(x, T_COMPLEX))
 	return m_sin_bang(x);
     {
 	get_dat1(x);
@@ -492,72 +614,179 @@ m_sin(VALUE x)
     }
 }
 
-#if 0
 static VALUE
-m_sqrt(VALUE x)
+f_complex_polar(VALUE klass, VALUE x, VALUE y)
 {
-    if (f_real_p(x)) {
-	if (f_positive_p(x))
-	    return m_sqrt_bang(x);
-	return f_complex_new2(rb_cComplex, ZERO, m_sqrt_bang(f_negate(x)));
+    assert(!RB_TYPE_P(x, T_COMPLEX));
+    assert(!RB_TYPE_P(y, T_COMPLEX));
+    if (f_zero_p(x) || f_zero_p(y)) {
+	return nucomp_s_new_internal(klass, x, RFLOAT_0);
     }
-    else {
-	get_dat1(x);
-
-	if (f_negative_p(dat->imag))
-	    return f_conj(m_sqrt(f_conj(x)));
+    if (RB_FLOAT_TYPE_P(y)) {
+	const double arg = RFLOAT_VALUE(y);
+	if (arg == M_PI) {
+	    x = f_negate(x);
+	    y = RFLOAT_0;
+	}
+	else if (arg == M_PI_2) {
+	    y = x;
+	    x = RFLOAT_0;
+	}
+	else if (arg == M_PI_2+M_PI) {
+	    y = f_negate(x);
+	    x = RFLOAT_0;
+	}
+	else if (RB_FLOAT_TYPE_P(x)) {
+	    const double abs = RFLOAT_VALUE(x);
+	    const double real = abs * cos(arg), imag = abs * sin(arg);
+	    x = DBL2NUM(real);
+	    y = DBL2NUM(imag);
+	}
 	else {
-	    VALUE a = f_abs(x);
-	    return f_complex_new2(rb_cComplex,
-				  m_sqrt_bang(f_div(f_add(a, dat->real), TWO)),
-				  m_sqrt_bang(f_div(f_sub(a, dat->real), TWO)));
+            const double ax = sin(arg), ay = cos(arg);
+            y = f_mul(x, DBL2NUM(ax));
+            x = f_mul(x, DBL2NUM(ay));
 	}
+	return nucomp_s_new_internal(klass, x, y);
     }
-}
-#endif
-
-inline static VALUE
-f_complex_polar(VALUE klass, VALUE x, VALUE y)
-{
-    assert(!k_complex_p(x));
-    assert(!k_complex_p(y));
     return nucomp_s_canonicalize_internal(klass,
 					  f_mul(x, m_cos(y)),
 					  f_mul(x, m_sin(y)));
 }
 
+#ifdef HAVE___COSPI
+# define cospi(x) __cospi(x)
+#else
+# define cospi(x) cos((x) * M_PI)
+#endif
+#ifdef HAVE___SINPI
+# define sinpi(x) __sinpi(x)
+#else
+# define sinpi(x) sin((x) * M_PI)
+#endif
+/* returns a Complex or Float of ang*PI-rotated abs */
+VALUE
+rb_dbl_complex_new_polar_pi(double abs, double ang)
+{
+    double fi;
+    const double fr = modf(ang, &fi);
+    int pos = fr == +0.5;
+
+    if (pos || fr == -0.5) {
+	if ((modf(fi / 2.0, &fi) != fr) ^ pos) abs = -abs;
+	return rb_complex_new(RFLOAT_0, DBL2NUM(abs));
+    }
+    else if (fr == 0.0) {
+	if (modf(fi / 2.0, &fi) != 0.0) abs = -abs;
+	return DBL2NUM(abs);
+    }
+    else {
+        const double real = abs * cospi(ang), imag = abs * sinpi(ang);
+        return rb_complex_new(DBL2NUM(real), DBL2NUM(imag));
+    }
+}
+
+/*
+ * call-seq:
+ *    Complex.polar(abs[, arg])  ->  complex
+ *
+ * Returns a complex object which denotes the given polar form.
+ *
+ *    Complex.polar(3, 0)            #=> (3.0+0.0i)
+ *    Complex.polar(3, Math::PI/2)   #=> (1.836909530733566e-16+3.0i)
+ *    Complex.polar(3, Math::PI)     #=> (-3.0+3.673819061467132e-16i)
+ *    Complex.polar(3, -Math::PI/2)  #=> (1.836909530733566e-16-3.0i)
+ */
 static VALUE
-nucomp_s_polar(VALUE klass, VALUE abs, VALUE arg)
+nucomp_s_polar(int argc, VALUE *argv, VALUE klass)
 {
+    VALUE abs, arg;
+
+    switch (rb_scan_args(argc, argv, "11", &abs, &arg)) {
+      case 1:
+	nucomp_real_check(abs);
+	return nucomp_s_new_internal(klass, abs, ZERO);
+      default:
+	nucomp_real_check(abs);
+	nucomp_real_check(arg);
+	break;
+    }
+    if (RB_TYPE_P(abs, T_COMPLEX)) {
+        get_dat1(abs);
+        abs = dat->real;
+    }
+    if (RB_TYPE_P(arg, T_COMPLEX)) {
+        get_dat1(arg);
+        arg = dat->real;
+    }
     return f_complex_polar(klass, abs, arg);
 }
 
-static VALUE
-nucomp_real(VALUE self)
+/*
+ * call-seq:
+ *    cmp.real  ->  real
+ *
+ * Returns the real part.
+ *
+ *    Complex(7).real      #=> 7
+ *    Complex(9, -4).real  #=> 9
+ */
+VALUE
+rb_complex_real(VALUE self)
 {
     get_dat1(self);
     return dat->real;
 }
 
-static VALUE
-nucomp_imag(VALUE self)
+/*
+ * call-seq:
+ *    cmp.imag       ->  real
+ *    cmp.imaginary  ->  real
+ *
+ * Returns the imaginary part.
+ *
+ *    Complex(7).imaginary      #=> 0
+ *    Complex(9, -4).imaginary  #=> -4
+ */
+VALUE
+rb_complex_imag(VALUE self)
 {
     get_dat1(self);
     return dat->imag;
 }
 
-static VALUE
-nucomp_negate(VALUE self)
+/*
+ * call-seq:
+ *    -cmp  ->  complex
+ *
+ * Returns negation of the value.
+ *
+ *    -Complex(1, 2)  #=> (-1-2i)
+ */
+VALUE
+rb_complex_uminus(VALUE self)
 {
-  get_dat1(self);
-  return f_complex_new2(CLASS_OF(self),
-			f_negate(dat->real), f_negate(dat->imag));
+    get_dat1(self);
+    return f_complex_new2(CLASS_OF(self),
+			  f_negate(dat->real), f_negate(dat->imag));
 }
 
-static VALUE
-nucomp_add(VALUE self, VALUE other)
+/*
+ * call-seq:
+ *    cmp + numeric  ->  complex
+ *
+ * Performs addition.
+ *
+ *    Complex(2, 3)  + Complex(2, 3)   #=> (4+6i)
+ *    Complex(900)   + Complex(1)      #=> (901+0i)
+ *    Complex(-2, 9) + Complex(-9, 2)  #=> (-11+11i)
+ *    Complex(9, 8)  + 4               #=> (13+8i)
+ *    Complex(20, 9) + 9.8             #=> (29.8+9i)
+ */
+VALUE
+rb_complex_plus(VALUE self, VALUE other)
 {
-    if (k_complex_p(other)) {
+    if (RB_TYPE_P(other, T_COMPLEX)) {
 	VALUE real, imag;
 
 	get_dat2(self, other);
@@ -576,10 +805,22 @@ nucomp_add(VALUE self, VALUE other)
     return rb_num_coerce_bin(self, other, '+');
 }
 
-static VALUE
-nucomp_sub(VALUE self, VALUE other)
+/*
+ * call-seq:
+ *    cmp - numeric  ->  complex
+ *
+ * Performs subtraction.
+ *
+ *    Complex(2, 3)  - Complex(2, 3)   #=> (0+0i)
+ *    Complex(900)   - Complex(1)      #=> (899+0i)
+ *    Complex(-2, 9) - Complex(-9, 2)  #=> (7+7i)
+ *    Complex(9, 8)  - 4               #=> (5+8i)
+ *    Complex(20, 9) - 9.8             #=> (10.2+9i)
+ */
+VALUE
+rb_complex_minus(VALUE self, VALUE other)
 {
-    if (k_complex_p(other)) {
+    if (RB_TYPE_P(other, T_COMPLEX)) {
 	VALUE real, imag;
 
 	get_dat2(self, other);
@@ -599,17 +840,51 @@ nucomp_sub(VALUE self, VALUE other)
 }
 
 static VALUE
-nucomp_mul(VALUE self, VALUE other)
+safe_mul(VALUE a, VALUE b, int az, int bz)
 {
-    if (k_complex_p(other)) {
-	VALUE real, imag;
+    double v;
+    if (!az && bz && RB_FLOAT_TYPE_P(a) && (v = RFLOAT_VALUE(a), !isnan(v))) {
+	a = signbit(v) ? DBL2NUM(-1.0) : DBL2NUM(1.0);
+    }
+    if (!bz && az && RB_FLOAT_TYPE_P(b) && (v = RFLOAT_VALUE(b), !isnan(v))) {
+	b = signbit(v) ? DBL2NUM(-1.0) : DBL2NUM(1.0);
+    }
+    return f_mul(a, b);
+}
 
+static void
+comp_mul(VALUE areal, VALUE aimag, VALUE breal, VALUE bimag, VALUE *real, VALUE *imag)
+{
+    int arzero = f_zero_p(areal);
+    int aizero = f_zero_p(aimag);
+    int brzero = f_zero_p(breal);
+    int bizero = f_zero_p(bimag);
+    *real = f_sub(safe_mul(areal, breal, arzero, brzero),
+                  safe_mul(aimag, bimag, aizero, bizero));
+    *imag = f_add(safe_mul(areal, bimag, arzero, bizero),
+                  safe_mul(aimag, breal, aizero, brzero));
+}
+
+/*
+ * call-seq:
+ *    cmp * numeric  ->  complex
+ *
+ * Performs multiplication.
+ *
+ *    Complex(2, 3)  * Complex(2, 3)   #=> (-5+12i)
+ *    Complex(900)   * Complex(1)      #=> (900+0i)
+ *    Complex(-2, 9) * Complex(-9, 2)  #=> (0-85i)
+ *    Complex(9, 8)  * 4               #=> (36+32i)
+ *    Complex(20, 9) * 9.8             #=> (196.0+88.2i)
+ */
+VALUE
+rb_complex_mul(VALUE self, VALUE other)
+{
+    if (RB_TYPE_P(other, T_COMPLEX)) {
+	VALUE real, imag;
 	get_dat2(self, other);
 
-	real = f_sub(f_mul(adat->real, bdat->real),
-		     f_mul(adat->imag, bdat->imag));
-	imag = f_add(f_mul(adat->real, bdat->imag),
-		      f_mul(adat->imag, bdat->real));
+        comp_mul(adat->real, adat->imag, bdat->real, bdat->imag, &real, &imag);
 
 	return f_complex_new2(CLASS_OF(self), real, imag);
     }
@@ -623,149 +898,303 @@ nucomp_mul(VALUE self, VALUE other)
     return rb_num_coerce_bin(self, other, '*');
 }
 
-#define f_div f_quo
-
-static VALUE
-nucomp_div(VALUE self, VALUE other)
+inline static VALUE
+f_divide(VALUE self, VALUE other,
+	 VALUE (*func)(VALUE, VALUE), ID id)
 {
-    if (k_complex_p(other)) {
+    if (RB_TYPE_P(other, T_COMPLEX)) {
+        VALUE r, n, x, y;
+	int flo;
 	get_dat2(self, other);
 
-	if (TYPE(adat->real)  == T_FLOAT ||
-	    TYPE(adat->imag) == T_FLOAT ||
-	    TYPE(bdat->real)  == T_FLOAT ||
-	    TYPE(bdat->imag) == T_FLOAT) {
-	    VALUE magn = m_hypot(bdat->real, bdat->imag);
-	    VALUE tmp = f_complex_new_bang2(CLASS_OF(self),
-					    f_div(bdat->real, magn),
-					    f_div(bdat->imag, magn));
-	    return f_div(f_mul(self, f_conj(tmp)), magn);
+	flo = (RB_FLOAT_TYPE_P(adat->real) || RB_FLOAT_TYPE_P(adat->imag) ||
+	       RB_FLOAT_TYPE_P(bdat->real) || RB_FLOAT_TYPE_P(bdat->imag));
+
+	if (f_gt_p(f_abs(bdat->real), f_abs(bdat->imag))) {
+	    r = (*func)(bdat->imag, bdat->real);
+	    n = f_mul(bdat->real, f_add(ONE, f_mul(r, r)));
+            x = (*func)(f_add(adat->real, f_mul(adat->imag, r)), n);
+            y = (*func)(f_sub(adat->imag, f_mul(adat->real, r)), n);
 	}
-	return f_div(f_mul(self, f_conj(other)), f_abs2(other));
+	else {
+	    r = (*func)(bdat->real, bdat->imag);
+	    n = f_mul(bdat->imag, f_add(ONE, f_mul(r, r)));
+            x = (*func)(f_add(f_mul(adat->real, r), adat->imag), n);
+            y = (*func)(f_sub(f_mul(adat->imag, r), adat->real), n);
+	}
+        if (!flo) {
+            x = rb_rational_canonicalize(x);
+            y = rb_rational_canonicalize(y);
+        }
+        return f_complex_new2(CLASS_OF(self), x, y);
     }
     if (k_numeric_p(other) && f_real_p(other)) {
+        VALUE x, y;
 	get_dat1(self);
-
-	return f_complex_new2(CLASS_OF(self),
-			      f_div(dat->real, other),
-			      f_div(dat->imag, other));
+        x = rb_rational_canonicalize((*func)(dat->real, other));
+        y = rb_rational_canonicalize((*func)(dat->imag, other));
+        return f_complex_new2(CLASS_OF(self), x, y);
     }
-    return rb_num_coerce_bin(self, other, '/');
+    return rb_num_coerce_bin(self, other, id);
 }
 
-#undef f_div
-#define nucomp_quo nucomp_div
+#define rb_raise_zerodiv() rb_raise(rb_eZeroDivError, "divided by 0")
 
+/*
+ * call-seq:
+ *    cmp / numeric     ->  complex
+ *    cmp.quo(numeric)  ->  complex
+ *
+ * Performs division.
+ *
+ *    Complex(2, 3)  / Complex(2, 3)   #=> ((1/1)+(0/1)*i)
+ *    Complex(900)   / Complex(1)      #=> ((900/1)+(0/1)*i)
+ *    Complex(-2, 9) / Complex(-9, 2)  #=> ((36/85)-(77/85)*i)
+ *    Complex(9, 8)  / 4               #=> ((9/4)+(2/1)*i)
+ *    Complex(20, 9) / 9.8             #=> (2.0408163265306123+0.9183673469387754i)
+ */
+VALUE
+rb_complex_div(VALUE self, VALUE other)
+{
+    return f_divide(self, other, f_quo, id_quo);
+}
+
+#define nucomp_quo rb_complex_div
+
+/*
+ * call-seq:
+ *    cmp.fdiv(numeric)  ->  complex
+ *
+ * Performs division as each part is a float, never returns a float.
+ *
+ *    Complex(11, 22).fdiv(3)  #=> (3.6666666666666665+7.333333333333333i)
+ */
 static VALUE
 nucomp_fdiv(VALUE self, VALUE other)
 {
-    get_dat1(self);
+    return f_divide(self, other, f_fdiv, id_fdiv);
+}
 
-    return f_div(f_complex_new2(CLASS_OF(self),
-				f_to_f(dat->real),
-				f_to_f(dat->imag)), other);
+inline static VALUE
+f_reciprocal(VALUE x)
+{
+    return f_quo(ONE, x);
 }
 
-static VALUE
-nucomp_expt(VALUE self, VALUE other)
+/*
+ * call-seq:
+ *    cmp ** numeric  ->  complex
+ *
+ * Performs exponentiation.
+ *
+ *    Complex('i') ** 2              #=> (-1+0i)
+ *    Complex(-8) ** Rational(1, 3)  #=> (1.0000000000000002+1.7320508075688772i)
+ */
+VALUE
+rb_complex_pow(VALUE self, VALUE other)
 {
-    if (k_exact_p(other) && f_zero_p(other))
+    if (k_numeric_p(other) && k_exact_zero_p(other))
 	return f_complex_new_bang1(CLASS_OF(self), ONE);
 
-    if (k_rational_p(other) && f_one_p(f_denominator(other)))
-	other = f_numerator(other); /* good? */
+    if (RB_TYPE_P(other, T_RATIONAL) && RRATIONAL(other)->den == LONG2FIX(1))
+	other = RRATIONAL(other)->num; /* c14n */
+
+    if (RB_TYPE_P(other, T_COMPLEX)) {
+	get_dat1(other);
+
+	if (k_exact_zero_p(dat->imag))
+	    other = dat->real; /* c14n */
+    }
 
-    if (k_complex_p(other)) {
-	VALUE a, r, theta, ore, oim, nr, ntheta;
+    if (RB_TYPE_P(other, T_COMPLEX)) {
+	VALUE r, theta, nr, ntheta;
 
 	get_dat1(other);
 
-	a = f_polar(self);
-	r = RARRAY_PTR(a)[0];
-	theta = RARRAY_PTR(a)[1];
+	r = f_abs(self);
+	theta = f_arg(self);
 
-	ore = dat->real;
-	oim = dat->imag;
-	nr = m_exp_bang(f_sub(f_mul(ore, m_log_bang(r)),
-			      f_mul(oim, theta)));
-	ntheta = f_add(f_mul(theta, ore), f_mul(oim, m_log_bang(r)));
+	nr = m_exp_bang(f_sub(f_mul(dat->real, m_log_bang(r)),
+			      f_mul(dat->imag, theta)));
+	ntheta = f_add(f_mul(theta, dat->real),
+		       f_mul(dat->imag, m_log_bang(r)));
 	return f_complex_polar(CLASS_OF(self), nr, ntheta);
     }
-    if (k_integer_p(other)) {
-	if (f_gt_p(other, ZERO)) {
-	    VALUE x, z, n;
-
-	    x = self;
-	    z = x;
-	    n = f_sub(other, ONE);
-
-	    while (f_nonzero_p(n)) {
-		VALUE a;
-
-		while (a = f_divmod(n, TWO),
-		       f_zero_p(RARRAY_PTR(a)[1])) {
-		    get_dat1(x);
-
-		    x = f_complex_new2(CLASS_OF(self),
-				       f_sub(f_mul(dat->real, dat->real),
-					     f_mul(dat->imag, dat->imag)),
-				       f_mul(f_mul(TWO, dat->real), dat->imag));
-		    n = RARRAY_PTR(a)[0];
-		}
-		z = f_mul(z, x);
-		n = f_sub(n, ONE);
-	    }
-	    return z;
+    if (FIXNUM_P(other)) {
+        long n = FIX2LONG(other);
+        if (n == 0) {
+            return nucomp_s_new_internal(CLASS_OF(self), ONE, ZERO);
+        }
+        if (n < 0) {
+            self = f_reciprocal(self);
+            other = rb_int_uminus(other);
+            n = -n;
+        }
+        {
+            get_dat1(self);
+            VALUE xr = dat->real, xi = dat->imag, zr = xr, zi = xi;
+
+            if (f_zero_p(xi)) {
+                zr = rb_num_pow(zr, other);
+            }
+            else if (f_zero_p(xr)) {
+                zi = rb_num_pow(zi, other);
+                if (n & 2) zi = f_negate(zi);
+                if (!(n & 1)) {
+                    VALUE tmp = zr;
+                    zr = zi;
+                    zi = tmp;
+                }
+            }
+            else {
+                while (--n) {
+                    long q, r;
+
+                    for (; q = n / 2, r = n % 2, r == 0; n = q) {
+                        VALUE tmp = f_sub(f_mul(xr, xr), f_mul(xi, xi));
+                        xi = f_mul(f_mul(TWO, xr), xi);
+                        xr = tmp;
+                    }
+                    comp_mul(zr, zi, xr, xi, &zr, &zi);
+                }
+            }
+            return nucomp_s_new_internal(CLASS_OF(self), zr, zi);
 	}
-	return f_expt(f_div(f_to_r(ONE), self), f_negate(other));
     }
     if (k_numeric_p(other) && f_real_p(other)) {
-	VALUE a, r, theta;
+	VALUE r, theta;
+
+	if (RB_TYPE_P(other, T_BIGNUM))
+	    rb_warn("in a**b, b may be too big");
+
+	r = f_abs(self);
+	theta = f_arg(self);
 
-	a = f_polar(self);
-	r = RARRAY_PTR(a)[0];
-	theta = RARRAY_PTR(a)[1];
 	return f_complex_polar(CLASS_OF(self), f_expt(r, other),
-			      f_mul(theta, other));
+			       f_mul(theta, other));
     }
     return rb_num_coerce_bin(self, other, id_expt);
 }
 
+/*
+ * call-seq:
+ *    cmp == object  ->  true or false
+ *
+ * Returns true if cmp equals object numerically.
+ *
+ *    Complex(2, 3)  == Complex(2, 3)   #=> true
+ *    Complex(5)     == 5               #=> true
+ *    Complex(0)     == 0.0             #=> true
+ *    Complex('1/3') == 0.33            #=> false
+ *    Complex('1/2') == '1/2'           #=> false
+ */
 static VALUE
-nucomp_equal_p(VALUE self, VALUE other)
+nucomp_eqeq_p(VALUE self, VALUE other)
 {
-    if (k_complex_p(other)) {
+    if (RB_TYPE_P(other, T_COMPLEX)) {
 	get_dat2(self, other);
 
-	return f_boolcast(f_equal_p(adat->real, bdat->real) &&
-			  f_equal_p(adat->imag, bdat->imag));
+	return f_boolcast(f_eqeq_p(adat->real, bdat->real) &&
+			  f_eqeq_p(adat->imag, bdat->imag));
     }
     if (k_numeric_p(other) && f_real_p(other)) {
 	get_dat1(self);
 
-	return f_boolcast(f_equal_p(dat->real, other) && f_zero_p(dat->imag));
+	return f_boolcast(f_eqeq_p(dat->real, other) && f_zero_p(dat->imag));
     }
-    return f_equal_p(other, self);
+    return f_boolcast(f_eqeq_p(other, self));
 }
 
+static bool
+nucomp_real_p(VALUE self)
+{
+    get_dat1(self);
+    return(f_zero_p(dat->imag) ? true : false);
+}
+
+/*
+ * call-seq:
+ *    cmp <=> object  ->  0, 1, -1, or nil
+ *
+ * If +cmp+'s imaginary part is zero, and +object+ is also a
+ * real number (or a Complex number where the imaginary part is zero),
+ * compare the real part of +cmp+ to object.  Otherwise, return nil.
+ *
+ *    Complex(2, 3)  <=> Complex(2, 3)   #=> nil
+ *    Complex(2, 3)  <=> 1               #=> nil
+ *    Complex(2)     <=> 1               #=> 1
+ *    Complex(2)     <=> 2               #=> 0
+ *    Complex(2)     <=> 3               #=> -1
+ */
+static VALUE
+nucomp_cmp(VALUE self, VALUE other)
+{
+    if (nucomp_real_p(self) && k_numeric_p(other)) {
+        if (RB_TYPE_P(other, T_COMPLEX) && nucomp_real_p(other)) {
+            get_dat2(self, other);
+            return rb_funcall(adat->real, idCmp, 1, bdat->real);
+        }
+        else if (f_real_p(other)) {
+            get_dat1(self);
+            return rb_funcall(dat->real, idCmp, 1, other);
+        }
+    }
+    return Qnil;
+}
+
+/* :nodoc: */
 static VALUE
 nucomp_coerce(VALUE self, VALUE other)
 {
+    if (RB_TYPE_P(other, T_COMPLEX))
+	return rb_assoc_new(other, self);
     if (k_numeric_p(other) && f_real_p(other))
-	return rb_assoc_new(f_complex_new_bang1(CLASS_OF(self), other), self);
+        return rb_assoc_new(f_complex_new_bang1(CLASS_OF(self), other), self);
 
-    rb_raise(rb_eTypeError, "%s can't be coerced into %s",
-	     rb_obj_classname(other), rb_obj_classname(self));
+    rb_raise(rb_eTypeError, "%"PRIsVALUE" can't be coerced into %"PRIsVALUE,
+	     rb_obj_class(other), rb_obj_class(self));
     return Qnil;
 }
 
-static VALUE
-nucomp_abs(VALUE self)
+/*
+ * call-seq:
+ *    cmp.abs        ->  real
+ *    cmp.magnitude  ->  real
+ *
+ * Returns the absolute part of its polar form.
+ *
+ *    Complex(-1).abs         #=> 1
+ *    Complex(3.0, -4.0).abs  #=> 5.0
+ */
+VALUE
+rb_complex_abs(VALUE self)
 {
     get_dat1(self);
-    return m_hypot(dat->real, dat->imag);
+
+    if (f_zero_p(dat->real)) {
+	VALUE a = f_abs(dat->imag);
+	if (RB_FLOAT_TYPE_P(dat->real) && !RB_FLOAT_TYPE_P(dat->imag))
+	    a = f_to_f(a);
+	return a;
+    }
+    if (f_zero_p(dat->imag)) {
+	VALUE a = f_abs(dat->real);
+	if (!RB_FLOAT_TYPE_P(dat->real) && RB_FLOAT_TYPE_P(dat->imag))
+	    a = f_to_f(a);
+	return a;
+    }
+    return rb_math_hypot(dat->real, dat->imag);
 }
 
+/*
+ * call-seq:
+ *    cmp.abs2  ->  real
+ *
+ * Returns square of the absolute value.
+ *
+ *    Complex(-1).abs2         #=> 1
+ *    Complex(3.0, -4.0).abs2  #=> 25.0
+ */
 static VALUE
 nucomp_abs2(VALUE self)
 {
@@ -774,13 +1203,32 @@ nucomp_abs2(VALUE self)
 		 f_mul(dat->imag, dat->imag));
 }
 
-static VALUE
-nucomp_arg(VALUE self)
+/*
+ * call-seq:
+ *    cmp.arg    ->  float
+ *    cmp.angle  ->  float
+ *    cmp.phase  ->  float
+ *
+ * Returns the angle part of its polar form.
+ *
+ *    Complex.polar(3, Math::PI/2).arg  #=> 1.5707963267948966
+ */
+VALUE
+rb_complex_arg(VALUE self)
 {
     get_dat1(self);
-    return m_atan2_bang(dat->imag, dat->real);
+    return rb_math_atan2(dat->imag, dat->real);
 }
 
+/*
+ * call-seq:
+ *    cmp.rect         ->  array
+ *    cmp.rectangular  ->  array
+ *
+ * Returns an array; [cmp.real, cmp.imag].
+ *
+ *    Complex(1, 2).rectangular  #=> [1, 2]
+ */
 static VALUE
 nucomp_rect(VALUE self)
 {
@@ -788,50 +1236,57 @@ nucomp_rect(VALUE self)
     return rb_assoc_new(dat->real, dat->imag);
 }
 
+/*
+ * call-seq:
+ *    cmp.polar  ->  array
+ *
+ * Returns an array; [cmp.abs, cmp.arg].
+ *
+ *    Complex(1, 2).polar  #=> [2.23606797749979, 1.1071487177940904]
+ */
 static VALUE
 nucomp_polar(VALUE self)
 {
     return rb_assoc_new(f_abs(self), f_arg(self));
 }
 
-static VALUE
-nucomp_conj(VALUE self)
+/*
+ * call-seq:
+ *    cmp.conj       ->  complex
+ *    cmp.conjugate  ->  complex
+ *
+ * Returns the complex conjugate.
+ *
+ *    Complex(1, 2).conjugate  #=> (1-2i)
+ */
+VALUE
+rb_complex_conjugate(VALUE self)
 {
     get_dat1(self);
     return f_complex_new2(CLASS_OF(self), dat->real, f_negate(dat->imag));
 }
 
-#if 0
-static VALUE
-nucomp_true(VALUE self)
-{
-    return Qtrue;
-}
-#endif
-
+/*
+ * call-seq:
+ *    Complex(1).real?     ->  false
+ *    Complex(1, 2).real?  ->  false
+ *
+ * Returns false, even if the complex number has no imaginary part.
+ */
 static VALUE
 nucomp_false(VALUE self)
 {
     return Qfalse;
 }
 
-#if 0
-static VALUE
-nucomp_exact_p(VALUE self)
-{
-    get_dat1(self);
-    return f_boolcast(f_exact_p(dat->real) && f_exact_p(dat->imag));
-}
-
-static VALUE
-nucomp_inexact_p(VALUE self)
-{
-    return f_boolcast(!nucomp_exact_p(self));
-}
-#endif
-
-extern VALUE rb_lcm(VALUE x, VALUE y);
-
+/*
+ * call-seq:
+ *    cmp.denominator  ->  integer
+ *
+ * Returns the denominator (lcm of both denominator - real and imag).
+ *
+ * See numerator.
+ */
 static VALUE
 nucomp_denominator(VALUE self)
 {
@@ -839,6 +1294,24 @@ nucomp_denominator(VALUE self)
     return rb_lcm(f_denominator(dat->real), f_denominator(dat->imag));
 }
 
+/*
+ * call-seq:
+ *    cmp.numerator  ->  numeric
+ *
+ * Returns the numerator.
+ *
+ *        1   2       3+4i  <-  numerator
+ *        - + -i  ->  ----
+ *        2   3        6    <-  denominator
+ *
+ *    c = Complex('1/2+2/3i')  #=> ((1/2)+(2/3)*i)
+ *    n = c.numerator          #=> (3+4i)
+ *    d = c.denominator        #=> 6
+ *    n / d                    #=> ((1/2)+(2/3)*i)
+ *    Complex(Rational(n.real, d), Rational(n.imag, d))
+ *                             #=> ((1/2)+(2/3)*i)
+ * See denominator.
+ */
 static VALUE
 nucomp_numerator(VALUE self)
 {
@@ -846,7 +1319,7 @@ nucomp_numerator(VALUE self)
 
     get_dat1(self);
 
-    cd = f_denominator(self);
+    cd = nucomp_denominator(self);
     return f_complex_new2(CLASS_OF(self),
 			  f_mul(f_numerator(dat->real),
 				f_div(cd, f_denominator(dat->real))),
@@ -854,67 +1327,64 @@ nucomp_numerator(VALUE self)
 				f_div(cd, f_denominator(dat->imag))));
 }
 
+/* :nodoc: */
+st_index_t
+rb_complex_hash(VALUE self)
+{
+    st_index_t v, h[2];
+    VALUE n;
+
+    get_dat1(self);
+    n = rb_hash(dat->real);
+    h[0] = NUM2LONG(n);
+    n = rb_hash(dat->imag);
+    h[1] = NUM2LONG(n);
+    v = rb_memhash(h, sizeof(h));
+    return v;
+}
+
 static VALUE
 nucomp_hash(VALUE self)
 {
-    get_dat1(self);
-    return f_xor(f_hash(dat->real), f_hash(dat->imag));
+    return ST2FIX(rb_complex_hash(self));
 }
 
+/* :nodoc: */
 static VALUE
 nucomp_eql_p(VALUE self, VALUE other)
 {
-    if (k_complex_p(other)) {
+    if (RB_TYPE_P(other, T_COMPLEX)) {
 	get_dat2(self, other);
 
 	return f_boolcast((CLASS_OF(adat->real) == CLASS_OF(bdat->real)) &&
 			  (CLASS_OF(adat->imag) == CLASS_OF(bdat->imag)) &&
-			  f_equal_p(self, other));
+			  f_eqeq_p(self, other));
 
     }
     return Qfalse;
 }
 
-#ifndef HAVE_SIGNBIT
-#ifdef signbit
-#define HAVE_SIGNBIT 1
-#endif
-#endif
-
-inline static VALUE
+inline static int
 f_signbit(VALUE x)
 {
-    switch (TYPE(x)) {
-      case T_FLOAT:
-#ifdef HAVE_SIGNBIT
-      {
-	  double f = RFLOAT_VALUE(x);
-	  return f_boolcast(!isnan(f) && signbit(f));
-      }
-#else
-      {
-	  char s[2];
-	  double f = RFLOAT_VALUE(x);
-
-	  if (isnan(f)) return Qfalse;
-	  (void)snprintf(s, sizeof s, "%.0f", f);
-	  return f_boolcast(s[0] == '-');
-      }
-#endif
+    if (RB_FLOAT_TYPE_P(x)) {
+	double f = RFLOAT_VALUE(x);
+	return !isnan(f) && signbit(f);
     }
     return f_negative_p(x);
 }
 
-inline static VALUE
+inline static int
 f_tpositive_p(VALUE x)
 {
-    return f_boolcast(!f_signbit(x));
+    return !f_signbit(x);
 }
 
 static VALUE
-nucomp_format(VALUE self, VALUE (*func)(VALUE))
+f_format(VALUE self, VALUE (*func)(VALUE))
 {
-    VALUE s, impos;
+    VALUE s;
+    int impos;
 
     get_dat1(self);
 
@@ -931,24 +1401,112 @@ nucomp_format(VALUE self, VALUE (*func)(VALUE))
     return s;
 }
 
+/*
+ * call-seq:
+ *    cmp.to_s  ->  string
+ *
+ * Returns the value as a string.
+ *
+ *    Complex(2).to_s                       #=> "2+0i"
+ *    Complex('-8/6').to_s                  #=> "-4/3+0i"
+ *    Complex('1/2i').to_s                  #=> "0+1/2i"
+ *    Complex(0, Float::INFINITY).to_s      #=> "0+Infinity*i"
+ *    Complex(Float::NAN, Float::NAN).to_s  #=> "NaN+NaN*i"
+ */
 static VALUE
 nucomp_to_s(VALUE self)
 {
-    return nucomp_format(self, f_to_s);
+    return f_format(self, rb_String);
 }
 
+/*
+ * call-seq:
+ *    cmp.inspect  ->  string
+ *
+ * Returns the value as a string for inspection.
+ *
+ *    Complex(2).inspect                       #=> "(2+0i)"
+ *    Complex('-8/6').inspect                  #=> "((-4/3)+0i)"
+ *    Complex('1/2i').inspect                  #=> "(0+(1/2)*i)"
+ *    Complex(0, Float::INFINITY).inspect      #=> "(0+Infinity*i)"
+ *    Complex(Float::NAN, Float::NAN).inspect  #=> "(NaN+NaN*i)"
+ */
 static VALUE
 nucomp_inspect(VALUE self)
 {
     VALUE s;
 
     s = rb_usascii_str_new2("(");
-    rb_str_concat(s, nucomp_format(self, f_inspect));
+    rb_str_concat(s, f_format(self, rb_inspect));
     rb_str_cat2(s, ")");
 
     return s;
 }
 
+#define FINITE_TYPE_P(v) (RB_INTEGER_TYPE_P(v) || RB_TYPE_P(v, T_RATIONAL))
+
+/*
+ * call-seq:
+ *    cmp.finite?  ->  true or false
+ *
+ * Returns +true+ if +cmp+'s real and imaginary parts are both finite numbers,
+ * otherwise returns +false+.
+ */
+static VALUE
+rb_complex_finite_p(VALUE self)
+{
+    get_dat1(self);
+
+    if (f_finite_p(dat->real) && f_finite_p(dat->imag)) {
+	return Qtrue;
+    }
+    return Qfalse;
+}
+
+/*
+ * call-seq:
+ *    cmp.infinite?  ->  nil or 1
+ *
+ * Returns +1+ if +cmp+'s real or imaginary part is an infinite number,
+ * otherwise returns +nil+.
+ *
+ *  For example:
+ *
+ *     (1+1i).infinite?                   #=> nil
+ *     (Float::INFINITY + 1i).infinite?   #=> 1
+ */
+static VALUE
+rb_complex_infinite_p(VALUE self)
+{
+    get_dat1(self);
+
+    if (NIL_P(f_infinite_p(dat->real)) && NIL_P(f_infinite_p(dat->imag))) {
+	return Qnil;
+    }
+    return ONE;
+}
+
+/* :nodoc: */
+static VALUE
+nucomp_dumper(VALUE self)
+{
+    return self;
+}
+
+/* :nodoc: */
+static VALUE
+nucomp_loader(VALUE self, VALUE a)
+{
+    get_dat1(self);
+
+    RCOMPLEX_SET_REAL(dat, rb_ivar_get(a, id_i_real));
+    RCOMPLEX_SET_IMAG(dat, rb_ivar_get(a, id_i_imag));
+    OBJ_FREEZE_RAW(self);
+
+    return self;
+}
+
+/* :nodoc: */
 static VALUE
 nucomp_marshal_dump(VALUE self)
 {
@@ -960,13 +1518,15 @@ nucomp_marshal_dump(VALUE self)
     return a;
 }
 
+/* :nodoc: */
 static VALUE
 nucomp_marshal_load(VALUE self, VALUE a)
 {
-    get_dat1(self);
-    dat->real = RARRAY_PTR(a)[0];
-    dat->imag = RARRAY_PTR(a)[1];
-    rb_copy_generic_ivar(self, a);
+    Check_Type(a, T_ARRAY);
+    if (RARRAY_LEN(a) != 2)
+	rb_raise(rb_eArgError, "marshaled complex must have an array whose length is 2 but %ld", RARRAY_LEN(a));
+    rb_ivar_set(self, id_i_real, RARRAY_AREF(a, 0));
+    rb_ivar_set(self, id_i_imag, RARRAY_AREF(a, 1));
     return self;
 }
 
@@ -985,12 +1545,16 @@ rb_complex_new(VALUE x, VALUE y)
 }
 
 VALUE
-rb_complex_polar(VALUE x, VALUE y)
+rb_complex_new_polar(VALUE x, VALUE y)
 {
-    return nucomp_s_polar(rb_cComplex, x, y);
+    return f_complex_polar(rb_cComplex, x, y);
 }
 
-static VALUE nucomp_s_convert(int argc, VALUE *argv, VALUE klass);
+VALUE
+rb_complex_polar(VALUE x, VALUE y)
+{
+    return rb_complex_new_polar(x, y);
+}
 
 VALUE
 rb_Complex(VALUE x, VALUE y)
@@ -1001,305 +1565,556 @@ rb_Complex(VALUE x, VALUE y)
     return nucomp_s_convert(2, a, rb_cComplex);
 }
 
+/*!
+ * Creates a Complex object.
+ *
+ * \param real    real part value
+ * \param imag    imaginary part value
+ * \return        a new Complex object
+ */
+VALUE
+rb_dbl_complex_new(double real, double imag)
+{
+    return rb_complex_raw(DBL2NUM(real), DBL2NUM(imag));
+}
+
+/*
+ * call-seq:
+ *    cmp.to_i  ->  integer
+ *
+ * Returns the value as an integer if possible (the imaginary part
+ * should be exactly zero).
+ *
+ *    Complex(1, 0).to_i    #=> 1
+ *    Complex(1, 0.0).to_i  # RangeError
+ *    Complex(1, 2).to_i    # RangeError
+ */
 static VALUE
 nucomp_to_i(VALUE self)
 {
     get_dat1(self);
 
-    if (k_inexact_p(dat->imag) || f_nonzero_p(dat->imag)) {
-	VALUE s = f_to_s(self);
-	rb_raise(rb_eRangeError, "can't convert %s into Integer",
-		 StringValuePtr(s));
+    if (!k_exact_zero_p(dat->imag)) {
+	rb_raise(rb_eRangeError, "can't convert %"PRIsVALUE" into Integer",
+		 self);
     }
     return f_to_i(dat->real);
 }
 
+/*
+ * call-seq:
+ *    cmp.to_f  ->  float
+ *
+ * Returns the value as a float if possible (the imaginary part should
+ * be exactly zero).
+ *
+ *    Complex(1, 0).to_f    #=> 1.0
+ *    Complex(1, 0.0).to_f  # RangeError
+ *    Complex(1, 2).to_f    # RangeError
+ */
 static VALUE
 nucomp_to_f(VALUE self)
 {
     get_dat1(self);
 
-    if (k_inexact_p(dat->imag) || f_nonzero_p(dat->imag)) {
-	VALUE s = f_to_s(self);
-	rb_raise(rb_eRangeError, "can't convert %s into Float",
-		 StringValuePtr(s));
+    if (!k_exact_zero_p(dat->imag)) {
+	rb_raise(rb_eRangeError, "can't convert %"PRIsVALUE" into Float",
+		 self);
     }
     return f_to_f(dat->real);
 }
 
+/*
+ * call-seq:
+ *    cmp.to_r  ->  rational
+ *
+ * Returns the value as a rational if possible (the imaginary part
+ * should be exactly zero).
+ *
+ *    Complex(1, 0).to_r    #=> (1/1)
+ *    Complex(1, 0.0).to_r  # RangeError
+ *    Complex(1, 2).to_r    # RangeError
+ *
+ * See rationalize.
+ */
 static VALUE
 nucomp_to_r(VALUE self)
 {
     get_dat1(self);
 
-    if (k_inexact_p(dat->imag) || f_nonzero_p(dat->imag)) {
-	VALUE s = f_to_s(self);
-	rb_raise(rb_eRangeError, "can't convert %s into Rational",
-		 StringValuePtr(s));
+    if (!k_exact_zero_p(dat->imag)) {
+	rb_raise(rb_eRangeError, "can't convert %"PRIsVALUE" into Rational",
+		 self);
     }
     return f_to_r(dat->real);
 }
 
+/*
+ * call-seq:
+ *    cmp.rationalize([eps])  ->  rational
+ *
+ * Returns the value as a rational if possible (the imaginary part
+ * should be exactly zero).
+ *
+ *    Complex(1.0/3, 0).rationalize  #=> (1/3)
+ *    Complex(1, 0.0).rationalize    # RangeError
+ *    Complex(1, 2).rationalize      # RangeError
+ *
+ * See to_r.
+ */
+static VALUE
+nucomp_rationalize(int argc, VALUE *argv, VALUE self)
+{
+    get_dat1(self);
+
+    rb_check_arity(argc, 0, 1);
+
+    if (!k_exact_zero_p(dat->imag)) {
+       rb_raise(rb_eRangeError, "can't convert %"PRIsVALUE" into Rational",
+                self);
+    }
+    return rb_funcallv(dat->real, id_rationalize, argc, argv);
+}
+
+/*
+ * call-seq:
+ *    complex.to_c  ->  self
+ *
+ * Returns self.
+ *
+ *    Complex(2).to_c      #=> (2+0i)
+ *    Complex(-8, 6).to_c  #=> (-8+6i)
+ */
+static VALUE
+nucomp_to_c(VALUE self)
+{
+    return self;
+}
+
+/*
+ * call-seq:
+ *    nil.to_c  ->  (0+0i)
+ *
+ * Returns zero as a complex.
+ */
 static VALUE
 nilclass_to_c(VALUE self)
 {
     return rb_complex_new1(INT2FIX(0));
 }
 
+/*
+ * call-seq:
+ *    num.to_c  ->  complex
+ *
+ * Returns the value as a complex.
+ */
 static VALUE
 numeric_to_c(VALUE self)
 {
     return rb_complex_new1(self);
 }
 
-static VALUE comp_pat0, comp_pat1, comp_pat2, a_slash, a_dot_and_an_e,
-    null_string, underscores_pat, an_underscore;
-
-#define WS "\\s*"
-#define DIGITS "(?:\\d(?:_\\d|\\d)*)"
-#define NUMERATOR "(?:" DIGITS "?\\.)?" DIGITS "(?:[eE][-+]?" DIGITS ")?"
-#define DENOMINATOR DIGITS
-#define NUMBER "[-+]?" NUMERATOR "(?:\\/" DENOMINATOR ")?"
-#define NUMBERNOS NUMERATOR "(?:\\/" DENOMINATOR ")?"
-#define PATTERN0 "\\A" WS "(" NUMBER ")@(" NUMBER ")" WS
-#define PATTERN1 "\\A" WS "([-+])?(" NUMBER ")?[iIjJ]" WS
-#define PATTERN2 "\\A" WS "(" NUMBER ")(([-+])(" NUMBERNOS ")?[iIjJ])?" WS
+inline static int
+issign(int c)
+{
+    return (c == '-' || c == '+');
+}
 
-static void
-make_patterns(void)
+static int
+read_sign(const char **s,
+	  char **b)
 {
-    static const char comp_pat0_source[] = PATTERN0;
-    static const char comp_pat1_source[] = PATTERN1;
-    static const char comp_pat2_source[] = PATTERN2;
-    static const char underscores_pat_source[] = "_+";
+    int sign = '?';
 
-    if (comp_pat0) return;
+    if (issign(**s)) {
+	sign = **b = **s;
+	(*s)++;
+	(*b)++;
+    }
+    return sign;
+}
 
-    comp_pat0 = rb_reg_new(comp_pat0_source, sizeof comp_pat0_source - 1, 0);
-    rb_gc_register_mark_object(comp_pat0);
+inline static int
+isdecimal(int c)
+{
+    return isdigit((unsigned char)c);
+}
 
-    comp_pat1 = rb_reg_new(comp_pat1_source, sizeof comp_pat1_source - 1, 0);
-    rb_gc_register_mark_object(comp_pat1);
+static int
+read_digits(const char **s, int strict,
+	    char **b)
+{
+    int us = 1;
 
-    comp_pat2 = rb_reg_new(comp_pat2_source, sizeof comp_pat2_source - 1, 0);
-    rb_gc_register_mark_object(comp_pat2);
+    if (!isdecimal(**s))
+	return 0;
 
-    a_slash = rb_usascii_str_new2("/");
-    rb_gc_register_mark_object(a_slash);
+    while (isdecimal(**s) || **s == '_') {
+	if (**s == '_') {
+	    if (strict) {
+		if (us)
+		    return 0;
+	    }
+	    us = 1;
+	}
+	else {
+	    **b = **s;
+	    (*b)++;
+	    us = 0;
+	}
+	(*s)++;
+    }
+    if (us)
+	do {
+	    (*s)--;
+	} while (**s == '_');
+    return 1;
+}
 
-    a_dot_and_an_e = rb_usascii_str_new2(".eE");
-    rb_gc_register_mark_object(a_dot_and_an_e);
+inline static int
+islettere(int c)
+{
+    return (c == 'e' || c == 'E');
+}
 
-    null_string = rb_usascii_str_new2("");
-    rb_gc_register_mark_object(null_string);
+static int
+read_num(const char **s, int strict,
+	 char **b)
+{
+    if (**s != '.') {
+	if (!read_digits(s, strict, b))
+	    return 0;
+    }
 
-    underscores_pat = rb_reg_new(underscores_pat_source,
-				 sizeof underscores_pat_source - 1, 0);
-    rb_gc_register_mark_object(underscores_pat);
+    if (**s == '.') {
+	**b = **s;
+	(*s)++;
+	(*b)++;
+	if (!read_digits(s, strict, b)) {
+	    (*b)--;
+	    return 0;
+	}
+    }
 
-    an_underscore = rb_usascii_str_new2("_");
-    rb_gc_register_mark_object(an_underscore);
+    if (islettere(**s)) {
+	**b = **s;
+	(*s)++;
+	(*b)++;
+	read_sign(s, b);
+	if (!read_digits(s, strict, b)) {
+	    (*b)--;
+	    return 0;
+	}
+    }
+    return 1;
 }
 
-#define id_match rb_intern("match")
-#define f_match(x,y) rb_funcall(x, id_match, 1, y)
+inline static int
+read_den(const char **s, int strict,
+	 char **b)
+{
+    if (!read_digits(s, strict, b))
+	return 0;
+    return 1;
+}
 
-#define id_aref rb_intern("[]")
-#define f_aref(x,y) rb_funcall(x, id_aref, 1, y)
+static int
+read_rat_nos(const char **s, int strict,
+	     char **b)
+{
+    if (!read_num(s, strict, b))
+	return 0;
+    if (**s == '/') {
+	**b = **s;
+	(*s)++;
+	(*b)++;
+	if (!read_den(s, strict, b)) {
+	    (*b)--;
+	    return 0;
+	}
+    }
+    return 1;
+}
 
-#define id_post_match rb_intern("post_match")
-#define f_post_match(x) rb_funcall(x, id_post_match, 0)
+static int
+read_rat(const char **s, int strict,
+	 char **b)
+{
+    read_sign(s, b);
+    if (!read_rat_nos(s, strict, b))
+	return 0;
+    return 1;
+}
 
-#define id_split rb_intern("split")
-#define f_split(x,y) rb_funcall(x, id_split, 1, y)
+inline static int
+isimagunit(int c)
+{
+    return (c == 'i' || c == 'I' ||
+	    c == 'j' || c == 'J');
+}
 
-#define id_include_p rb_intern("include?")
-#define f_include_p(x,y) rb_funcall(x, id_include_p, 1, y)
+static VALUE
+str2num(char *s)
+{
+    if (strchr(s, '/'))
+	return rb_cstr_to_rat(s, 0);
+    if (strpbrk(s, ".eE"))
+	return DBL2NUM(rb_cstr_to_dbl(s, 0));
+    return rb_cstr_to_inum(s, 10, 0);
+}
 
-#define id_count rb_intern("count")
-#define f_count(x,y) rb_funcall(x, id_count, 1, y)
+static int
+read_comp(const char **s, int strict,
+	  VALUE *ret, char **b)
+{
+    char *bb;
+    int sign;
+    VALUE num, num2;
 
-#define id_gsub_bang rb_intern("gsub!")
-#define f_gsub_bang(x,y,z) rb_funcall(x, id_gsub_bang, 2, y, z)
+    bb = *b;
 
-static VALUE
-string_to_c_internal(VALUE self)
-{
-    VALUE s;
+    sign = read_sign(s, b);
 
-    s = self;
+    if (isimagunit(**s)) {
+	(*s)++;
+	num = INT2FIX((sign == '-') ? -1 : + 1);
+	*ret = rb_complex_new2(ZERO, num);
+	return 1; /* e.g. "i" */
+    }
 
-    if (RSTRING_LEN(s) == 0)
-	return rb_assoc_new(Qnil, self);
+    if (!read_rat_nos(s, strict, b)) {
+	**b = '\0';
+	num = str2num(bb);
+	*ret = rb_complex_new2(num, ZERO);
+	return 0; /* e.g. "-" */
+    }
+    **b = '\0';
+    num = str2num(bb);
 
-    {
-	VALUE m, sr, si, re, r, i;
-	int po;
-
-	m = f_match(comp_pat0, s);
-	if (!NIL_P(m)) {
-	  sr = f_aref(m, INT2FIX(1));
-	  si = f_aref(m, INT2FIX(2));
-	  re = f_post_match(m);
-	  po = 1;
-	}
-	if (NIL_P(m)) {
-	    m = f_match(comp_pat1, s);
-	    if (!NIL_P(m)) {
-		sr = Qnil;
-		si = f_aref(m, INT2FIX(1));
-		if (NIL_P(si))
-		    si = rb_usascii_str_new2("");
-		{
-		    VALUE t;
-
-		    t = f_aref(m, INT2FIX(2));
-		    if (NIL_P(t))
-			t = rb_usascii_str_new2("1");
-		    rb_str_concat(si, t);
-		}
-		re = f_post_match(m);
-		po = 0;
-	    }
+    if (isimagunit(**s)) {
+	(*s)++;
+	*ret = rb_complex_new2(ZERO, num);
+	return 1; /* e.g. "3i" */
+    }
+
+    if (**s == '@') {
+	int st;
+
+	(*s)++;
+	bb = *b;
+	st = read_rat(s, strict, b);
+	**b = '\0';
+	if (strlen(bb) < 1 ||
+	    !isdecimal(*(bb + strlen(bb) - 1))) {
+	    *ret = rb_complex_new2(num, ZERO);
+	    return 0; /* e.g. "1@-" */
 	}
-	if (NIL_P(m)) {
-	    m = f_match(comp_pat2, s);
-	    if (NIL_P(m))
-		return rb_assoc_new(Qnil, self);
-	    sr = f_aref(m, INT2FIX(1));
-	    if (NIL_P(f_aref(m, INT2FIX(2))))
-		si = Qnil;
-	    else {
-		VALUE t;
-
-		si = f_aref(m, INT2FIX(3));
-		t = f_aref(m, INT2FIX(4));
-		if (NIL_P(t))
-		    t = rb_usascii_str_new2("1");
-		rb_str_concat(si, t);
+	num2 = str2num(bb);
+	*ret = rb_complex_new_polar(num, num2);
+	if (!st)
+	    return 0; /* e.g. "1@2." */
+	else
+	    return 1; /* e.g. "1@2" */
+    }
+
+    if (issign(**s)) {
+	bb = *b;
+	sign = read_sign(s, b);
+	if (isimagunit(**s))
+	    num2 = INT2FIX((sign == '-') ? -1 : + 1);
+	else {
+	    if (!read_rat_nos(s, strict, b)) {
+		*ret = rb_complex_new2(num, ZERO);
+		return 0; /* e.g. "1+xi" */
 	    }
-	    re = f_post_match(m);
-	    po = 0;
-	}
-	r = INT2FIX(0);
-	i = INT2FIX(0);
-	if (!NIL_P(sr)) {
-	    if (f_include_p(sr, a_slash))
-		r = f_to_r(sr);
-	    else if (f_gt_p(f_count(sr, a_dot_and_an_e), INT2FIX(0)))
-		r = f_to_f(sr);
-	    else
-		r = f_to_i(sr);
+	    **b = '\0';
+	    num2 = str2num(bb);
 	}
-	if (!NIL_P(si)) {
-	    if (f_include_p(si, a_slash))
-		i = f_to_r(si);
-	    else if (f_gt_p(f_count(si, a_dot_and_an_e), INT2FIX(0)))
-		i = f_to_f(si);
-	    else
-		i = f_to_i(si);
+	if (!isimagunit(**s)) {
+	    *ret = rb_complex_new2(num, ZERO);
+	    return 0; /* e.g. "1+3x" */
 	}
-	if (po)
-	    return rb_assoc_new(rb_complex_polar(r, i), re);
-	else
-	    return rb_assoc_new(rb_complex_new2(r, i), re);
+	(*s)++;
+	*ret = rb_complex_new2(num, num2);
+	return 1; /* e.g. "1+2i" */
+    }
+    /* !(@, - or +) */
+    {
+	*ret = rb_complex_new2(num, ZERO);
+	return 1; /* e.g. "3" */
     }
 }
 
-static VALUE
-string_to_c_strict(VALUE self)
+inline static void
+skip_ws(const char **s)
 {
-    VALUE a = string_to_c_internal(self);
-    if (NIL_P(RARRAY_PTR(a)[0]) || RSTRING_LEN(RARRAY_PTR(a)[1]) > 0) {
-	VALUE s = f_inspect(self);
-	rb_raise(rb_eArgError, "invalid value for Complex: %s",
-		 StringValuePtr(s));
-    }
-    return RARRAY_PTR(a)[0];
+    while (isspace((unsigned char)**s))
+	(*s)++;
 }
 
-#define id_gsub rb_intern("gsub")
-#define f_gsub(x,y,z) rb_funcall(x, id_gsub, 2, y, z)
+static int
+parse_comp(const char *s, int strict, VALUE *num)
+{
+    char *buf, *b;
+    VALUE tmp;
+    int ret = 1;
+
+    buf = ALLOCV_N(char, tmp, strlen(s) + 1);
+    b = buf;
+
+    skip_ws(&s);
+    if (!read_comp(&s, strict, num, &b)) {
+        ret = 0;
+    }
+    else {
+        skip_ws(&s);
+
+        if (strict)
+            if (*s != '\0')
+                ret = 0;
+    }
+    ALLOCV_END(tmp);
+
+    return ret;
+}
 
 static VALUE
-string_to_c(VALUE self)
+string_to_c_strict(VALUE self, int raise)
 {
-    VALUE s, a, backref;
+    char *s;
+    VALUE num;
 
-    backref = rb_backref_get();
-    rb_match_busy(backref);
+    rb_must_asciicompat(self);
 
-    s = f_gsub(self, underscores_pat, an_underscore);
-    a = string_to_c_internal(s);
+    s = RSTRING_PTR(self);
 
-    rb_backref_set(backref);
+    if (!s || memchr(s, '\0', RSTRING_LEN(self))) {
+        if (!raise) return Qnil;
+	rb_raise(rb_eArgError, "string contains null byte");
+    }
 
-    if (!NIL_P(RARRAY_PTR(a)[0]))
-	return RARRAY_PTR(a)[0];
-    return rb_complex_new1(INT2FIX(0));
+    if (s && s[RSTRING_LEN(self)]) {
+	rb_str_modify(self);
+	s = RSTRING_PTR(self);
+	s[RSTRING_LEN(self)] = '\0';
+    }
+
+    if (!s)
+	s = (char *)"";
+
+    if (!parse_comp(s, 1, &num)) {
+        if (!raise) return Qnil;
+	rb_raise(rb_eArgError, "invalid value for convert(): %+"PRIsVALUE,
+		 self);
+    }
+
+    return num;
 }
 
+/*
+ * call-seq:
+ *    str.to_c  ->  complex
+ *
+ * Returns a complex which denotes the string form.  The parser
+ * ignores leading whitespaces and trailing garbage.  Any digit
+ * sequences can be separated by an underscore.  Returns zero for null
+ * or garbage string.
+ *
+ *    '9'.to_c           #=> (9+0i)
+ *    '2.5'.to_c         #=> (2.5+0i)
+ *    '2.5/1'.to_c       #=> ((5/2)+0i)
+ *    '-3/2'.to_c        #=> ((-3/2)+0i)
+ *    '-i'.to_c          #=> (0-1i)
+ *    '45i'.to_c         #=> (0+45i)
+ *    '3-4i'.to_c        #=> (3-4i)
+ *    '-4e2-4e-2i'.to_c  #=> (-400.0-0.04i)
+ *    '-0.0-0.0i'.to_c   #=> (-0.0-0.0i)
+ *    '1/2+3/4i'.to_c    #=> ((1/2)+(3/4)*i)
+ *    'ruby'.to_c        #=> (0+0i)
+ *
+ * See Kernel.Complex.
+ */
 static VALUE
-nucomp_s_convert(int argc, VALUE *argv, VALUE klass)
+string_to_c(VALUE self)
 {
-    VALUE a1, a2, backref;
+    char *s;
+    VALUE num;
 
-    rb_scan_args(argc, argv, "11", &a1, &a2);
+    rb_must_asciicompat(self);
 
-    backref = rb_backref_get();
-    rb_match_busy(backref);
+    s = RSTRING_PTR(self);
 
-    switch (TYPE(a1)) {
-      case T_FIXNUM:
-      case T_BIGNUM:
-      case T_FLOAT:
-	break;
-      case T_STRING:
-	a1 = string_to_c_strict(a1);
-	break;
+    if (s && s[RSTRING_LEN(self)]) {
+	rb_str_modify(self);
+	s = RSTRING_PTR(self);
+	s[RSTRING_LEN(self)] = '\0';
     }
 
-    switch (TYPE(a2)) {
-      case T_FIXNUM:
-      case T_BIGNUM:
-      case T_FLOAT:
-	break;
-      case T_STRING:
-	a2 = string_to_c_strict(a2);
-	break;
+    if (!s)
+	s = (char *)"";
+
+    (void)parse_comp(s, 0, &num);
+
+    return num;
+}
+
+static VALUE
+to_complex(VALUE val)
+{
+    return rb_convert_type(val, T_COMPLEX, "Complex", "to_c");
+}
+
+static VALUE
+nucomp_convert(VALUE klass, VALUE a1, VALUE a2, int raise)
+{
+    if (NIL_P(a1) || NIL_P(a2)) {
+        if (!raise) return Qnil;
+	rb_raise(rb_eTypeError, "can't convert nil into Complex");
+    }
+
+    if (RB_TYPE_P(a1, T_STRING)) {
+	a1 = string_to_c_strict(a1, raise);
+        if (NIL_P(a1)) return Qnil;
     }
 
-    rb_backref_set(backref);
+    if (RB_TYPE_P(a2, T_STRING)) {
+	a2 = string_to_c_strict(a2, raise);
+        if (NIL_P(a2)) return Qnil;
+    }
 
-    switch (TYPE(a1)) {
-      case T_COMPLEX:
+    if (RB_TYPE_P(a1, T_COMPLEX)) {
 	{
 	    get_dat1(a1);
 
-	    if (k_exact_p(dat->imag) && f_zero_p(dat->imag))
+	    if (k_exact_zero_p(dat->imag))
 		a1 = dat->real;
 	}
     }
 
-    switch (TYPE(a2)) {
-      case T_COMPLEX:
+    if (RB_TYPE_P(a2, T_COMPLEX)) {
 	{
 	    get_dat1(a2);
 
-	    if (k_exact_p(dat->imag) && f_zero_p(dat->imag))
+	    if (k_exact_zero_p(dat->imag))
 		a2 = dat->real;
 	}
     }
 
-    switch (TYPE(a1)) {
-      case T_COMPLEX:
-	if (argc == 1 || (k_exact_p(a2) && f_zero_p(a2)))
+    if (RB_TYPE_P(a1, T_COMPLEX)) {
+	if (a2 == Qundef || (k_exact_zero_p(a2)))
 	    return a1;
     }
 
-    if (argc == 1) {
+    if (a2 == Qundef) {
 	if (k_numeric_p(a1) && !f_real_p(a1))
 	    return a1;
+	/* should raise exception for consistency */
+	if (!k_numeric_p(a1)) {
+            if (!raise)
+                return rb_protect(to_complex, a1, NULL);
+	    return to_complex(a1);
+        }
     }
     else {
 	if ((k_numeric_p(a1) && k_numeric_p(a2)) &&
@@ -1310,166 +2125,271 @@ nucomp_s_convert(int argc, VALUE *argv, VALUE klass)
     }
 
     {
+        int argc;
 	VALUE argv2[2];
 	argv2[0] = a1;
-	argv2[1] = a2;
+        if (a2 == Qundef) {
+            argv2[1] = Qnil;
+            argc = 1;
+        }
+        else {
+            if (!raise && !RB_INTEGER_TYPE_P(a2) && !RB_FLOAT_TYPE_P(a2) && !RB_TYPE_P(a2, T_RATIONAL))
+                return Qnil;
+            argv2[1] = a2;
+            argc = 2;
+        }
 	return nucomp_s_new(argc, argv2, klass);
     }
 }
 
+static VALUE
+nucomp_s_convert(int argc, VALUE *argv, VALUE klass)
+{
+    VALUE a1, a2;
+
+    if (rb_scan_args(argc, argv, "11", &a1, &a2) == 1) {
+        a2 = Qundef;
+    }
+
+    return nucomp_convert(klass, a1, a2, TRUE);
+}
+
 /* --- */
 
+/*
+ * call-seq:
+ *    num.real  ->  self
+ *
+ * Returns self.
+ */
 static VALUE
 numeric_real(VALUE self)
 {
     return self;
 }
 
+/*
+ * call-seq:
+ *    num.imag       ->  0
+ *    num.imaginary  ->  0
+ *
+ * Returns zero.
+ */
 static VALUE
 numeric_imag(VALUE self)
 {
     return INT2FIX(0);
 }
 
+/*
+ * call-seq:
+ *    num.abs2  ->  real
+ *
+ * Returns square of self.
+ */
 static VALUE
 numeric_abs2(VALUE self)
 {
     return f_mul(self, self);
 }
 
-#define id_PI rb_intern("PI")
-
+/*
+ * call-seq:
+ *    num.arg    ->  0 or float
+ *    num.angle  ->  0 or float
+ *    num.phase  ->  0 or float
+ *
+ * Returns 0 if the value is positive, pi otherwise.
+ */
 static VALUE
 numeric_arg(VALUE self)
 {
     if (f_positive_p(self))
-	return INT2FIX(0);
-    return rb_const_get(rb_mMath, id_PI);
+        return INT2FIX(0);
+    return DBL2NUM(M_PI);
 }
 
+/*
+ * call-seq:
+ *    num.rect  ->  array
+ *    num.rectangular  ->  array
+ *
+ * Returns an array; [num, 0].
+ */
 static VALUE
 numeric_rect(VALUE self)
 {
     return rb_assoc_new(self, INT2FIX(0));
 }
 
+static VALUE float_arg(VALUE self);
+
+/*
+ * call-seq:
+ *    num.polar  ->  array
+ *
+ * Returns an array; [num.abs, num.arg].
+ */
 static VALUE
 numeric_polar(VALUE self)
 {
-    return rb_assoc_new(f_abs(self), f_arg(self));
+    VALUE abs, arg;
+
+    if (RB_INTEGER_TYPE_P(self)) {
+        abs = rb_int_abs(self);
+        arg = numeric_arg(self);
+    }
+    else if (RB_FLOAT_TYPE_P(self)) {
+        abs = rb_float_abs(self);
+        arg = float_arg(self);
+    }
+    else if (RB_TYPE_P(self, T_RATIONAL)) {
+        abs = rb_rational_abs(self);
+        arg = numeric_arg(self);
+    }
+    else {
+        abs = f_abs(self);
+        arg = f_arg(self);
+    }
+    return rb_assoc_new(abs, arg);
 }
 
+/*
+ * call-seq:
+ *    num.conj       ->  self
+ *    num.conjugate  ->  self
+ *
+ * Returns self.
+ */
 static VALUE
 numeric_conj(VALUE self)
 {
     return self;
 }
 
+/*
+ * call-seq:
+ *    flo.arg    ->  0 or float
+ *    flo.angle  ->  0 or float
+ *    flo.phase  ->  0 or float
+ *
+ * Returns 0 if the value is positive, pi otherwise.
+ */
+static VALUE
+float_arg(VALUE self)
+{
+    if (isnan(RFLOAT_VALUE(self)))
+	return self;
+    if (f_tpositive_p(self))
+	return INT2FIX(0);
+    return rb_const_get(rb_mMath, id_PI);
+}
+
+/*
+ * A complex number can be represented as a paired real number with
+ * imaginary unit; a+bi.  Where a is real part, b is imaginary part
+ * and i is imaginary unit.  Real a equals complex a+0i
+ * mathematically.
+ *
+ * Complex object can be created as literal, and also by using
+ * Kernel#Complex, Complex::rect, Complex::polar or to_c method.
+ *
+ *    2+1i                 #=> (2+1i)
+ *    Complex(1)           #=> (1+0i)
+ *    Complex(2, 3)        #=> (2+3i)
+ *    Complex.polar(2, 3)  #=> (-1.9799849932008908+0.2822400161197344i)
+ *    3.to_c               #=> (3+0i)
+ *
+ * You can also create complex object from floating-point numbers or
+ * strings.
+ *
+ *    Complex(0.3)         #=> (0.3+0i)
+ *    Complex('0.3-0.5i')  #=> (0.3-0.5i)
+ *    Complex('2/3+3/4i')  #=> ((2/3)+(3/4)*i)
+ *    Complex('1@2')       #=> (-0.4161468365471424+0.9092974268256817i)
+ *
+ *    0.3.to_c             #=> (0.3+0i)
+ *    '0.3-0.5i'.to_c      #=> (0.3-0.5i)
+ *    '2/3+3/4i'.to_c      #=> ((2/3)+(3/4)*i)
+ *    '1@2'.to_c           #=> (-0.4161468365471424+0.9092974268256817i)
+ *
+ * A complex object is either an exact or an inexact number.
+ *
+ *    Complex(1, 1) / 2    #=> ((1/2)+(1/2)*i)
+ *    Complex(1, 1) / 2.0  #=> (0.5+0.5i)
+ */
 void
 Init_Complex(void)
 {
-#undef rb_intern
-#define rb_intern(str) rb_intern_const(str)
-
-    assert(fprintf(stderr, "assert() is now active\n"));
-
-    id_abs = rb_intern("abs");
-    id_abs2 = rb_intern("abs2");
-    id_arg = rb_intern("arg");
-    id_cmp = rb_intern("<=>");
-    id_conj = rb_intern("conj");
-    id_convert = rb_intern("convert");
-    id_denominator = rb_intern("denominator");
-    id_divmod = rb_intern("divmod");
-    id_equal_p = rb_intern("==");
-    id_expt = rb_intern("**");
-    id_floor = rb_intern("floor");
-    id_hash = rb_intern("hash");
-    id_idiv = rb_intern("div");
-    id_inspect = rb_intern("inspect");
-    id_negate = rb_intern("-@");
-    id_numerator = rb_intern("numerator");
-    id_polar = rb_intern("polar");
-    id_quo = rb_intern("quo");
-    id_real_p = rb_intern("real?");
-    id_to_f = rb_intern("to_f");
-    id_to_i = rb_intern("to_i");
-    id_to_r = rb_intern("to_r");
-    id_to_s = rb_intern("to_s");
-
-    rb_cComplex = rb_define_class(COMPLEX_NAME, rb_cNumeric);
+    VALUE compat;
+    id_abs = rb_intern_const("abs");
+    id_arg = rb_intern_const("arg");
+    id_denominator = rb_intern_const("denominator");
+    id_numerator = rb_intern_const("numerator");
+    id_real_p = rb_intern_const("real?");
+    id_i_real = rb_intern_const("@real");
+    id_i_imag = rb_intern_const("@image"); /* @image, not @imag */
+    id_finite_p = rb_intern_const("finite?");
+    id_infinite_p = rb_intern_const("infinite?");
+    id_rationalize = rb_intern_const("rationalize");
+    id_PI = rb_intern_const("PI");
+
+    rb_cComplex = rb_define_class("Complex", rb_cNumeric);
 
     rb_define_alloc_func(rb_cComplex, nucomp_s_alloc);
     rb_undef_method(CLASS_OF(rb_cComplex), "allocate");
 
-#if 0
-    rb_define_private_method(CLASS_OF(rb_cComplex), "new!", nucomp_s_new_bang, -1);
-    rb_define_private_method(CLASS_OF(rb_cComplex), "new", nucomp_s_new, -1);
-#else
     rb_undef_method(CLASS_OF(rb_cComplex), "new");
-#endif
 
     rb_define_singleton_method(rb_cComplex, "rectangular", nucomp_s_new, -1);
     rb_define_singleton_method(rb_cComplex, "rect", nucomp_s_new, -1);
-    rb_define_singleton_method(rb_cComplex, "polar", nucomp_s_polar, 2);
+    rb_define_singleton_method(rb_cComplex, "polar", nucomp_s_polar, -1);
 
-    rb_define_global_function(COMPLEX_NAME, nucomp_f_complex, -1);
+    rb_define_global_function("Complex", nucomp_f_complex, -1);
 
-    rb_undef_method(rb_cComplex, "<");
-    rb_undef_method(rb_cComplex, "<=");
-    rb_undef_method(rb_cComplex, "<=>");
-    rb_undef_method(rb_cComplex, ">");
-    rb_undef_method(rb_cComplex, ">=");
-    rb_undef_method(rb_cComplex, "between?");
+    rb_undef_methods_from(rb_cComplex, RCLASS_ORIGIN(rb_mComparable));
+    rb_undef_method(rb_cComplex, "%");
+    rb_undef_method(rb_cComplex, "div");
     rb_undef_method(rb_cComplex, "divmod");
     rb_undef_method(rb_cComplex, "floor");
     rb_undef_method(rb_cComplex, "ceil");
     rb_undef_method(rb_cComplex, "modulo");
+    rb_undef_method(rb_cComplex, "remainder");
     rb_undef_method(rb_cComplex, "round");
     rb_undef_method(rb_cComplex, "step");
     rb_undef_method(rb_cComplex, "truncate");
+    rb_undef_method(rb_cComplex, "i");
 
-#if 0 /* NUBY */
-    rb_undef_method(rb_cComplex, "//");
-#endif
-
-    rb_define_method(rb_cComplex, "real", nucomp_real, 0);
-    rb_define_method(rb_cComplex, "imaginary", nucomp_imag, 0);
-    rb_define_method(rb_cComplex, "imag", nucomp_imag, 0);
+    rb_define_method(rb_cComplex, "real", rb_complex_real, 0);
+    rb_define_method(rb_cComplex, "imaginary", rb_complex_imag, 0);
+    rb_define_method(rb_cComplex, "imag", rb_complex_imag, 0);
 
-    rb_define_method(rb_cComplex, "-@", nucomp_negate, 0);
-    rb_define_method(rb_cComplex, "+", nucomp_add, 1);
-    rb_define_method(rb_cComplex, "-", nucomp_sub, 1);
-    rb_define_method(rb_cComplex, "*", nucomp_mul, 1);
-    rb_define_method(rb_cComplex, "/", nucomp_div, 1);
+    rb_define_method(rb_cComplex, "-@", rb_complex_uminus, 0);
+    rb_define_method(rb_cComplex, "+", rb_complex_plus, 1);
+    rb_define_method(rb_cComplex, "-", rb_complex_minus, 1);
+    rb_define_method(rb_cComplex, "*", rb_complex_mul, 1);
+    rb_define_method(rb_cComplex, "/", rb_complex_div, 1);
     rb_define_method(rb_cComplex, "quo", nucomp_quo, 1);
     rb_define_method(rb_cComplex, "fdiv", nucomp_fdiv, 1);
-    rb_define_method(rb_cComplex, "**", nucomp_expt, 1);
+    rb_define_method(rb_cComplex, "**", rb_complex_pow, 1);
 
-    rb_define_method(rb_cComplex, "==", nucomp_equal_p, 1);
+    rb_define_method(rb_cComplex, "==", nucomp_eqeq_p, 1);
+    rb_define_method(rb_cComplex, "<=>", nucomp_cmp, 1);
     rb_define_method(rb_cComplex, "coerce", nucomp_coerce, 1);
 
-    rb_define_method(rb_cComplex, "abs", nucomp_abs, 0);
-    rb_define_method(rb_cComplex, "magnitude", nucomp_abs, 0);
+    rb_define_method(rb_cComplex, "abs", rb_complex_abs, 0);
+    rb_define_method(rb_cComplex, "magnitude", rb_complex_abs, 0);
     rb_define_method(rb_cComplex, "abs2", nucomp_abs2, 0);
-    rb_define_method(rb_cComplex, "arg", nucomp_arg, 0);
-    rb_define_method(rb_cComplex, "angle", nucomp_arg, 0);
-    rb_define_method(rb_cComplex, "phase", nucomp_arg, 0);
+    rb_define_method(rb_cComplex, "arg", rb_complex_arg, 0);
+    rb_define_method(rb_cComplex, "angle", rb_complex_arg, 0);
+    rb_define_method(rb_cComplex, "phase", rb_complex_arg, 0);
     rb_define_method(rb_cComplex, "rectangular", nucomp_rect, 0);
     rb_define_method(rb_cComplex, "rect", nucomp_rect, 0);
     rb_define_method(rb_cComplex, "polar", nucomp_polar, 0);
-    rb_define_method(rb_cComplex, "conjugate", nucomp_conj, 0);
-    rb_define_method(rb_cComplex, "conj", nucomp_conj, 0);
-#if 0
-    rb_define_method(rb_cComplex, "~", nucomp_conj, 0); /* gcc */
-#endif
+    rb_define_method(rb_cComplex, "conjugate", rb_complex_conjugate, 0);
+    rb_define_method(rb_cComplex, "conj", rb_complex_conjugate, 0);
 
     rb_define_method(rb_cComplex, "real?", nucomp_false, 0);
-#if 0
-    rb_define_method(rb_cComplex, "complex?", nucomp_true, 0);
-    rb_define_method(rb_cComplex, "exact?", nucomp_exact_p, 0);
-    rb_define_method(rb_cComplex, "inexact?", nucomp_inexact_p, 0);
-#endif
 
     rb_define_method(rb_cComplex, "numerator", nucomp_numerator, 0);
     rb_define_method(rb_cComplex, "denominator", nucomp_denominator, 0);
@@ -1480,19 +2400,28 @@ Init_Complex(void)
     rb_define_method(rb_cComplex, "to_s", nucomp_to_s, 0);
     rb_define_method(rb_cComplex, "inspect", nucomp_inspect, 0);
 
-    rb_define_method(rb_cComplex, "marshal_dump", nucomp_marshal_dump, 0);
-    rb_define_method(rb_cComplex, "marshal_load", nucomp_marshal_load, 1);
+    rb_undef_method(rb_cComplex, "positive?");
+    rb_undef_method(rb_cComplex, "negative?");
+
+    rb_define_method(rb_cComplex, "finite?", rb_complex_finite_p, 0);
+    rb_define_method(rb_cComplex, "infinite?", rb_complex_infinite_p, 0);
+
+    rb_define_private_method(rb_cComplex, "marshal_dump", nucomp_marshal_dump, 0);
+    /* :nodoc: */
+    compat = rb_define_class_under(rb_cComplex, "compatible", rb_cObject);
+    rb_define_private_method(compat, "marshal_load", nucomp_marshal_load, 1);
+    rb_marshal_define_compat(rb_cComplex, compat, nucomp_dumper, nucomp_loader);
 
     /* --- */
 
     rb_define_method(rb_cComplex, "to_i", nucomp_to_i, 0);
     rb_define_method(rb_cComplex, "to_f", nucomp_to_f, 0);
     rb_define_method(rb_cComplex, "to_r", nucomp_to_r, 0);
+    rb_define_method(rb_cComplex, "rationalize", nucomp_rationalize, -1);
+    rb_define_method(rb_cComplex, "to_c", nucomp_to_c, 0);
     rb_define_method(rb_cNilClass, "to_c", nilclass_to_c, 0);
     rb_define_method(rb_cNumeric, "to_c", numeric_to_c, 0);
 
-    make_patterns();
-
     rb_define_method(rb_cString, "to_c", string_to_c, 0);
 
     rb_define_private_method(CLASS_OF(rb_cComplex), "convert", nucomp_s_convert, -1);
@@ -1512,12 +2441,19 @@ Init_Complex(void)
     rb_define_method(rb_cNumeric, "conjugate", numeric_conj, 0);
     rb_define_method(rb_cNumeric, "conj", numeric_conj, 0);
 
+    rb_define_method(rb_cFloat, "arg", float_arg, 0);
+    rb_define_method(rb_cFloat, "angle", float_arg, 0);
+    rb_define_method(rb_cFloat, "phase", float_arg, 0);
+
+    /*
+     * The imaginary unit.
+     */
     rb_define_const(rb_cComplex, "I",
 		    f_complex_new_bang2(rb_cComplex, ZERO, ONE));
-}
 
-/*
-Local variables:
-c-file-style: "ruby"
-End:
-*/
+#if !USE_FLONUM
+    rb_gc_register_mark_object(RFLOAT_0 = DBL2NUM(0.0));
+#endif
+
+    rb_provide("complex.so");	/* for backward compatibility */
+}
diff --git a/config.guess b/config.guess
deleted file mode 100644
index 5186e37f44..0000000000
--- a/config.guess
+++ /dev/null
@@ -1,1532 +0,0 @@
-#! /bin/sh
-# Attempt to guess a canonical system name.
-#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
-#   Free Software Foundation, Inc.
-
-timestamp='2008-08-10'
-
-# This file is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
-# 02110-1301, USA.
-#
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-
-# Originally written by Per Bothner <per@bothner.com>.
-# Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted ChangeLog entry.
-#
-# This script attempts to guess a canonical system name similar to
-# config.sub.  If it succeeds, it prints the system name on stdout, and
-# exits with 0.  Otherwise, it exits with 1.
-#
-# The plan is that this can be called by configure scripts if you
-# don't specify an explicit build system type.
-
-me=`echo "$0" | sed -e 's,.*/,,'`
-
-usage="\
-Usage: $0 [OPTION]
-
-Output the configuration name of the system \`$me' is run on.
-
-Operation modes:
-  -h, --help         print this help, then exit
-  -t, --time-stamp   print date of last modification, then exit
-  -v, --version      print version number, then exit
-
-Report bugs and patches to <config-patches@gnu.org>."
-
-version="\
-GNU config.guess ($timestamp)
-
-Originally written by Per Bothner.
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
-
-This is free software; see the source for copying conditions.  There is NO
-warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
-
-help="
-Try \`$me --help' for more information."
-
-# Parse command line
-while test $# -gt 0 ; do
-  case $1 in
-    --time-stamp | --time* | -t )
-       echo "$timestamp" ; exit ;;
-    --version | -v )
-       echo "$version" ; exit ;;
-    --help | --h* | -h )
-       echo "$usage"; exit ;;
-    -- )     # Stop option processing
-       shift; break ;;
-    - )	# Use stdin as input.
-       break ;;
-    -* )
-       echo "$me: invalid option $1$help" >&2
-       exit 1 ;;
-    * )
-       break ;;
-  esac
-done
-
-if test $# != 0; then
-  echo "$me: too many arguments$help" >&2
-  exit 1
-fi
-
-trap 'exit 1' 1 2 15
-
-# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
-# compiler to aid in system detection is discouraged as it requires
-# temporary files to be created and, as you can see below, it is a
-# headache to deal with in a portable fashion.
-
-# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
-# use `HOST_CC' if defined, but it is deprecated.
-
-# Portable tmp directory creation inspired by the Autoconf team.
-
-set_cc_for_build='
-trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
-trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
-: ${TMPDIR=/tmp} ;
- { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
- { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
- { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
- { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
-dummy=$tmp/dummy ;
-tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
-case $CC_FOR_BUILD,$HOST_CC,$CC in
- ,,)    echo "int x;" > $dummy.c ;
-	for c in cc gcc c89 c99 ; do
-	  if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
-	     CC_FOR_BUILD="$c"; break ;
-	  fi ;
-	done ;
-	if test x"$CC_FOR_BUILD" = x ; then
-	  CC_FOR_BUILD=no_compiler_found ;
-	fi
-	;;
- ,,*)   CC_FOR_BUILD=$CC ;;
- ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
-esac ; set_cc_for_build= ;'
-
-# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
-# (ghazi@noc.rutgers.edu 1994-08-24)
-if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
-	PATH=$PATH:/.attbin ; export PATH
-fi
-
-UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
-UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
-UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
-UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
-
-# Note: order is significant - the case branches are not exclusive.
-
-case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
-    *:NetBSD:*:*)
-	# NetBSD (nbsd) targets should (where applicable) match one or
-	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
-	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
-	# switched to ELF, *-*-netbsd* would select the old
-	# object file format.  This provides both forward
-	# compatibility and a consistent mechanism for selecting the
-	# object file format.
-	#
-	# Note: NetBSD doesn't particularly care about the vendor
-	# portion of the name.  We always set it to "unknown".
-	sysctl="sysctl -n hw.machine_arch"
-	UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
-	    /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
-	case "${UNAME_MACHINE_ARCH}" in
-	    armeb) machine=armeb-unknown ;;
-	    arm*) machine=arm-unknown ;;
-	    sh3el) machine=shl-unknown ;;
-	    sh3eb) machine=sh-unknown ;;
-	    sh5el) machine=sh5le-unknown ;;
-	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
-	esac
-	# The Operating System including object format, if it has switched
-	# to ELF recently, or will in the future.
-	case "${UNAME_MACHINE_ARCH}" in
-	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
-		eval $set_cc_for_build
-		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
-			| grep __ELF__ >/dev/null
-		then
-		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
-		    # Return netbsd for either.  FIX?
-		    os=netbsd
-		else
-		    os=netbsdelf
-		fi
-		;;
-	    *)
-	        os=netbsd
-		;;
-	esac
-	# The OS release
-	# Debian GNU/NetBSD machines have a different userland, and
-	# thus, need a distinct triplet. However, they do not need
-	# kernel version information, so it can be replaced with a
-	# suitable tag, in the style of linux-gnu.
-	case "${UNAME_VERSION}" in
-	    Debian*)
-		release='-gnu'
-		;;
-	    *)
-		release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
-		;;
-	esac
-	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
-	# contains redundant information, the shorter form:
-	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
-	echo "${machine}-${os}${release}"
-	exit ;;
-    *:OpenBSD:*:*)
-	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
-	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
-	exit ;;
-    *:ekkoBSD:*:*)
-	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
-	exit ;;
-    *:SolidBSD:*:*)
-	echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
-	exit ;;
-    macppc:MirBSD:*:*)
-	echo powerpc-unknown-mirbsd${UNAME_RELEASE}
-	exit ;;
-    *:MirBSD:*:*)
-	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
-	exit ;;
-    alpha:OSF1:*:*)
-	case $UNAME_RELEASE in
-	*4.0)
-		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
-		;;
-	*5.*)
-	        UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
-		;;
-	esac
-	# According to Compaq, /usr/sbin/psrinfo has been available on
-	# OSF/1 and Tru64 systems produced since 1995.  I hope that
-	# covers most systems running today.  This code pipes the CPU
-	# types through head -n 1, so we only detect the type of CPU 0.
-	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
-	case "$ALPHA_CPU_TYPE" in
-	    "EV4 (21064)")
-		UNAME_MACHINE="alpha" ;;
-	    "EV4.5 (21064)")
-		UNAME_MACHINE="alpha" ;;
-	    "LCA4 (21066/21068)")
-		UNAME_MACHINE="alpha" ;;
-	    "EV5 (21164)")
-		UNAME_MACHINE="alphaev5" ;;
-	    "EV5.6 (21164A)")
-		UNAME_MACHINE="alphaev56" ;;
-	    "EV5.6 (21164PC)")
-		UNAME_MACHINE="alphapca56" ;;
-	    "EV5.7 (21164PC)")
-		UNAME_MACHINE="alphapca57" ;;
-	    "EV6 (21264)")
-		UNAME_MACHINE="alphaev6" ;;
-	    "EV6.7 (21264A)")
-		UNAME_MACHINE="alphaev67" ;;
-	    "EV6.8CB (21264C)")
-		UNAME_MACHINE="alphaev68" ;;
-	    "EV6.8AL (21264B)")
-		UNAME_MACHINE="alphaev68" ;;
-	    "EV6.8CX (21264D)")
-		UNAME_MACHINE="alphaev68" ;;
-	    "EV6.9A (21264/EV69A)")
-		UNAME_MACHINE="alphaev69" ;;
-	    "EV7 (21364)")
-		UNAME_MACHINE="alphaev7" ;;
-	    "EV7.9 (21364A)")
-		UNAME_MACHINE="alphaev79" ;;
-	esac
-	# A Pn.n version is a patched version.
-	# A Vn.n version is a released version.
-	# A Tn.n version is a released field test version.
-	# A Xn.n version is an unreleased experimental baselevel.
-	# 1.2 uses "1.2" for uname -r.
-	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-	exit ;;
-    Alpha\ *:Windows_NT*:*)
-	# How do we know it's Interix rather than the generic POSIX subsystem?
-	# Should we change UNAME_MACHINE based on the output of uname instead
-	# of the specific Alpha model?
-	echo alpha-pc-interix
-	exit ;;
-    21064:Windows_NT:50:3)
-	echo alpha-dec-winnt3.5
-	exit ;;
-    Amiga*:UNIX_System_V:4.0:*)
-	echo m68k-unknown-sysv4
-	exit ;;
-    *:[Aa]miga[Oo][Ss]:*:*)
-	echo ${UNAME_MACHINE}-unknown-amigaos
-	exit ;;
-    *:[Mm]orph[Oo][Ss]:*:*)
-	echo ${UNAME_MACHINE}-unknown-morphos
-	exit ;;
-    *:OS/390:*:*)
-	echo i370-ibm-openedition
-	exit ;;
-    *:z/VM:*:*)
-	echo s390-ibm-zvmoe
-	exit ;;
-    *:OS400:*:*)
-        echo powerpc-ibm-os400
-	exit ;;
-    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
-	echo arm-acorn-riscix${UNAME_RELEASE}
-	exit ;;
-    arm:riscos:*:*|arm:RISCOS:*:*)
-	echo arm-unknown-riscos
-	exit ;;
-    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
-	echo hppa1.1-hitachi-hiuxmpp
-	exit ;;
-    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
-	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
-	if test "`(/bin/universe) 2>/dev/null`" = att ; then
-		echo pyramid-pyramid-sysv3
-	else
-		echo pyramid-pyramid-bsd
-	fi
-	exit ;;
-    NILE*:*:*:dcosx)
-	echo pyramid-pyramid-svr4
-	exit ;;
-    DRS?6000:unix:4.0:6*)
-	echo sparc-icl-nx6
-	exit ;;
-    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
-	case `/usr/bin/uname -p` in
-	    sparc) echo sparc-icl-nx7; exit ;;
-	esac ;;
-    sun4H:SunOS:5.*:*)
-	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
-	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
-	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    sun4*:SunOS:6*:*)
-	# According to config.sub, this is the proper way to canonicalize
-	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
-	# it's likely to be more like Solaris than SunOS4.
-	echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    sun4*:SunOS:*:*)
-	case "`/usr/bin/arch -k`" in
-	    Series*|S4*)
-		UNAME_RELEASE=`uname -v`
-		;;
-	esac
-	# Japanese Language versions have a version number like `4.1.3-JL'.
-	echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
-	exit ;;
-    sun3*:SunOS:*:*)
-	echo m68k-sun-sunos${UNAME_RELEASE}
-	exit ;;
-    sun*:*:4.2BSD:*)
-	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
-	test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
-	case "`/bin/arch`" in
-	    sun3)
-		echo m68k-sun-sunos${UNAME_RELEASE}
-		;;
-	    sun4)
-		echo sparc-sun-sunos${UNAME_RELEASE}
-		;;
-	esac
-	exit ;;
-    aushp:SunOS:*:*)
-	echo sparc-auspex-sunos${UNAME_RELEASE}
-	exit ;;
-    # The situation for MiNT is a little confusing.  The machine name
-    # can be virtually everything (everything which is not
-    # "atarist" or "atariste" at least should have a processor
-    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
-    # to the lowercase version "mint" (or "freemint").  Finally
-    # the system name "TOS" denotes a system which is actually not
-    # MiNT.  But MiNT is downward compatible to TOS, so this should
-    # be no problem.
-    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
-	exit ;;
-    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
-	echo m68k-atari-mint${UNAME_RELEASE}
-        exit ;;
-    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
-	exit ;;
-    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
-        echo m68k-milan-mint${UNAME_RELEASE}
-        exit ;;
-    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
-        echo m68k-hades-mint${UNAME_RELEASE}
-        exit ;;
-    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
-        echo m68k-unknown-mint${UNAME_RELEASE}
-        exit ;;
-    m68k:machten:*:*)
-	echo m68k-apple-machten${UNAME_RELEASE}
-	exit ;;
-    powerpc:machten:*:*)
-	echo powerpc-apple-machten${UNAME_RELEASE}
-	exit ;;
-    RISC*:Mach:*:*)
-	echo mips-dec-mach_bsd4.3
-	exit ;;
-    RISC*:ULTRIX:*:*)
-	echo mips-dec-ultrix${UNAME_RELEASE}
-	exit ;;
-    VAX*:ULTRIX*:*:*)
-	echo vax-dec-ultrix${UNAME_RELEASE}
-	exit ;;
-    2020:CLIX:*:* | 2430:CLIX:*:*)
-	echo clipper-intergraph-clix${UNAME_RELEASE}
-	exit ;;
-    mips:*:*:UMIPS | mips:*:*:RISCos)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-#ifdef __cplusplus
-#include <stdio.h>  /* for printf() prototype */
-	int main (int argc, char *argv[]) {
-#else
-	int main (argc, argv) int argc; char *argv[]; {
-#endif
-	#if defined (host_mips) && defined (MIPSEB)
-	#if defined (SYSTYPE_SYSV)
-	  printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
-	#endif
-	#if defined (SYSTYPE_SVR4)
-	  printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
-	#endif
-	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
-	  printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
-	#endif
-	#endif
-	  exit (-1);
-	}
-EOF
-	$CC_FOR_BUILD -o $dummy $dummy.c &&
-	  dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
-	  SYSTEM_NAME=`$dummy $dummyarg` &&
-	    { echo "$SYSTEM_NAME"; exit; }
-	echo mips-mips-riscos${UNAME_RELEASE}
-	exit ;;
-    Motorola:PowerMAX_OS:*:*)
-	echo powerpc-motorola-powermax
-	exit ;;
-    Motorola:*:4.3:PL8-*)
-	echo powerpc-harris-powermax
-	exit ;;
-    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
-	echo powerpc-harris-powermax
-	exit ;;
-    Night_Hawk:Power_UNIX:*:*)
-	echo powerpc-harris-powerunix
-	exit ;;
-    m88k:CX/UX:7*:*)
-	echo m88k-harris-cxux7
-	exit ;;
-    m88k:*:4*:R4*)
-	echo m88k-motorola-sysv4
-	exit ;;
-    m88k:*:3*:R3*)
-	echo m88k-motorola-sysv3
-	exit ;;
-    AViiON:dgux:*:*)
-        # DG/UX returns AViiON for all architectures
-        UNAME_PROCESSOR=`/usr/bin/uname -p`
-	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
-	then
-	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
-	       [ ${TARGET_BINARY_INTERFACE}x = x ]
-	    then
-		echo m88k-dg-dgux${UNAME_RELEASE}
-	    else
-		echo m88k-dg-dguxbcs${UNAME_RELEASE}
-	    fi
-	else
-	    echo i586-dg-dgux${UNAME_RELEASE}
-	fi
- 	exit ;;
-    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
-	echo m88k-dolphin-sysv3
-	exit ;;
-    M88*:*:R3*:*)
-	# Delta 88k system running SVR3
-	echo m88k-motorola-sysv3
-	exit ;;
-    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
-	echo m88k-tektronix-sysv3
-	exit ;;
-    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
-	echo m68k-tektronix-bsd
-	exit ;;
-    *:IRIX*:*:*)
-	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
-	exit ;;
-    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
-	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
-	exit ;;               # Note that: echo "'`uname -s`'" gives 'AIX '
-    i*86:AIX:*:*)
-	echo i386-ibm-aix
-	exit ;;
-    ia64:AIX:*:*)
-	if [ -x /usr/bin/oslevel ] ; then
-		IBM_REV=`/usr/bin/oslevel`
-	else
-		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
-	fi
-	echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
-	exit ;;
-    *:AIX:2:3)
-	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
-		eval $set_cc_for_build
-		sed 's/^		//' << EOF >$dummy.c
-		#include <sys/systemcfg.h>
-
-		main()
-			{
-			if (!__power_pc())
-				exit(1);
-			puts("powerpc-ibm-aix3.2.5");
-			exit(0);
-			}
-EOF
-		if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
-		then
-			echo "$SYSTEM_NAME"
-		else
-			echo rs6000-ibm-aix3.2.5
-		fi
-	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
-		echo rs6000-ibm-aix3.2.4
-	else
-		echo rs6000-ibm-aix3.2
-	fi
-	exit ;;
-    *:AIX:*:[456])
-	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
-	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
-		IBM_ARCH=rs6000
-	else
-		IBM_ARCH=powerpc
-	fi
-	if [ -x /usr/bin/oslevel ] ; then
-		IBM_REV=`/usr/bin/oslevel`
-	else
-		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
-	fi
-	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
-	exit ;;
-    *:AIX:*:*)
-	echo rs6000-ibm-aix
-	exit ;;
-    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
-	echo romp-ibm-bsd4.4
-	exit ;;
-    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
-	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
-	exit ;;                             # report: romp-ibm BSD 4.3
-    *:BOSX:*:*)
-	echo rs6000-bull-bosx
-	exit ;;
-    DPX/2?00:B.O.S.:*:*)
-	echo m68k-bull-sysv3
-	exit ;;
-    9000/[34]??:4.3bsd:1.*:*)
-	echo m68k-hp-bsd
-	exit ;;
-    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
-	echo m68k-hp-bsd4.4
-	exit ;;
-    9000/[34678]??:HP-UX:*:*)
-	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
-	case "${UNAME_MACHINE}" in
-	    9000/31? )            HP_ARCH=m68000 ;;
-	    9000/[34]?? )         HP_ARCH=m68k ;;
-	    9000/[678][0-9][0-9])
-		if [ -x /usr/bin/getconf ]; then
-		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
-                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
-                    case "${sc_cpu_version}" in
-                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
-                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
-                      532)                      # CPU_PA_RISC2_0
-                        case "${sc_kernel_bits}" in
-                          32) HP_ARCH="hppa2.0n" ;;
-                          64) HP_ARCH="hppa2.0w" ;;
-			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
-                        esac ;;
-                    esac
-		fi
-		if [ "${HP_ARCH}" = "" ]; then
-		    eval $set_cc_for_build
-		    sed 's/^              //' << EOF >$dummy.c
-
-              #define _HPUX_SOURCE
-              #include <stdlib.h>
-              #include <unistd.h>
-
-              int main ()
-              {
-              #if defined(_SC_KERNEL_BITS)
-                  long bits = sysconf(_SC_KERNEL_BITS);
-              #endif
-                  long cpu  = sysconf (_SC_CPU_VERSION);
-
-                  switch (cpu)
-              	{
-              	case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
-              	case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
-              	case CPU_PA_RISC2_0:
-              #if defined(_SC_KERNEL_BITS)
-              	    switch (bits)
-              		{
-              		case 64: puts ("hppa2.0w"); break;
-              		case 32: puts ("hppa2.0n"); break;
-              		default: puts ("hppa2.0"); break;
-              		} break;
-              #else  /* !defined(_SC_KERNEL_BITS) */
-              	    puts ("hppa2.0"); break;
-              #endif
-              	default: puts ("hppa1.0"); break;
-              	}
-                  exit (0);
-              }
-EOF
-		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
-		    test -z "$HP_ARCH" && HP_ARCH=hppa
-		fi ;;
-	esac
-	if [ ${HP_ARCH} = "hppa2.0w" ]
-	then
-	    eval $set_cc_for_build
-
-	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
-	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
-	    # generating 64-bit code.  GNU and HP use different nomenclature:
-	    #
-	    # $ CC_FOR_BUILD=cc ./config.guess
-	    # => hppa2.0w-hp-hpux11.23
-	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
-	    # => hppa64-hp-hpux11.23
-
-	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
-		grep __LP64__ >/dev/null
-	    then
-		HP_ARCH="hppa2.0w"
-	    else
-		HP_ARCH="hppa64"
-	    fi
-	fi
-	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
-	exit ;;
-    ia64:HP-UX:*:*)
-	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
-	echo ia64-hp-hpux${HPUX_REV}
-	exit ;;
-    3050*:HI-UX:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#include <unistd.h>
-	int
-	main ()
-	{
-	  long cpu = sysconf (_SC_CPU_VERSION);
-	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
-	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
-	     results, however.  */
-	  if (CPU_IS_PA_RISC (cpu))
-	    {
-	      switch (cpu)
-		{
-		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
-		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
-		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
-		  default: puts ("hppa-hitachi-hiuxwe2"); break;
-		}
-	    }
-	  else if (CPU_IS_HP_MC68K (cpu))
-	    puts ("m68k-hitachi-hiuxwe2");
-	  else puts ("unknown-hitachi-hiuxwe2");
-	  exit (0);
-	}
-EOF
-	$CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
-		{ echo "$SYSTEM_NAME"; exit; }
-	echo unknown-hitachi-hiuxwe2
-	exit ;;
-    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
-	echo hppa1.1-hp-bsd
-	exit ;;
-    9000/8??:4.3bsd:*:*)
-	echo hppa1.0-hp-bsd
-	exit ;;
-    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
-	echo hppa1.0-hp-mpeix
-	exit ;;
-    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
-	echo hppa1.1-hp-osf
-	exit ;;
-    hp8??:OSF1:*:*)
-	echo hppa1.0-hp-osf
-	exit ;;
-    i*86:OSF1:*:*)
-	if [ -x /usr/sbin/sysversion ] ; then
-	    echo ${UNAME_MACHINE}-unknown-osf1mk
-	else
-	    echo ${UNAME_MACHINE}-unknown-osf1
-	fi
-	exit ;;
-    parisc*:Lites*:*:*)
-	echo hppa1.1-hp-lites
-	exit ;;
-    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
-	echo c1-convex-bsd
-        exit ;;
-    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
-	if getsysinfo -f scalar_acc
-	then echo c32-convex-bsd
-	else echo c2-convex-bsd
-	fi
-        exit ;;
-    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
-	echo c34-convex-bsd
-        exit ;;
-    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
-	echo c38-convex-bsd
-        exit ;;
-    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
-	echo c4-convex-bsd
-        exit ;;
-    CRAY*Y-MP:*:*:*)
-	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*[A-Z]90:*:*:*)
-	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
-	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
-	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
-	      -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*TS:*:*:*)
-	echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*T3E:*:*:*)
-	echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    CRAY*SV1:*:*:*)
-	echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    *:UNICOS/mp:*:*)
-	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
-	exit ;;
-    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
-	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
-        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
-        exit ;;
-    5000:UNIX_System_V:4.*:*)
-        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-        FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
-        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
-	exit ;;
-    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
-	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
-	exit ;;
-    sparc*:BSD/OS:*:*)
-	echo sparc-unknown-bsdi${UNAME_RELEASE}
-	exit ;;
-    *:BSD/OS:*:*)
-	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
-	exit ;;
-    *:FreeBSD:*:*)
-	case ${UNAME_MACHINE} in
-	    pc98)
-		echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
-	    amd64)
-		echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
-	    *)
-		echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
-	esac
-	exit ;;
-    i*:CYGWIN*:*)
-	echo ${UNAME_MACHINE}-pc-cygwin
-	exit ;;
-    *:MINGW*:*)
-	echo ${UNAME_MACHINE}-pc-mingw32
-	exit ;;
-    i*:windows32*:*)
-    	# uname -m includes "-pc" on this system.
-    	echo ${UNAME_MACHINE}-mingw32
-	exit ;;
-    i*:PW*:*)
-	echo ${UNAME_MACHINE}-pc-pw32
-	exit ;;
-    *:Interix*:[3456]*)
-    	case ${UNAME_MACHINE} in
-	    x86)
-		echo i586-pc-interix${UNAME_RELEASE}
-		exit ;;
-	    EM64T | authenticamd)
-		echo x86_64-unknown-interix${UNAME_RELEASE}
-		exit ;;
-	    IA64)
-		echo ia64-unknown-interix${UNAME_RELEASE}
-		exit ;;
-	esac ;;
-    [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
-	echo i${UNAME_MACHINE}-pc-mks
-	exit ;;
-    i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
-	# How do we know it's Interix rather than the generic POSIX subsystem?
-	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
-	# UNAME_MACHINE based on the output of uname instead of i386?
-	echo i586-pc-interix
-	exit ;;
-    i*:UWIN*:*)
-	echo ${UNAME_MACHINE}-pc-uwin
-	exit ;;
-    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
-	echo x86_64-unknown-cygwin
-	exit ;;
-    p*:CYGWIN*:*)
-	echo powerpcle-unknown-cygwin
-	exit ;;
-    prep*:SunOS:5.*:*)
-	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    *:GNU:*:*)
-	# the GNU system
-	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
-	exit ;;
-    *:GNU/*:*:*)
-	# other systems with GNU libc and userland
-	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
-	exit ;;
-    i*86:Minix:*:*)
-	echo ${UNAME_MACHINE}-pc-minix
-	exit ;;
-    arm*:Linux:*:*)
-	eval $set_cc_for_build
-	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
-	    | grep -q __ARM_EABI__
-	then
-	    echo ${UNAME_MACHINE}-unknown-linux-gnu
-	else
-	    echo ${UNAME_MACHINE}-unknown-linux-gnueabi
-	fi
-	exit ;;
-    avr32*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    cris:Linux:*:*)
-	echo cris-axis-linux-gnu
-	exit ;;
-    crisv32:Linux:*:*)
-	echo crisv32-axis-linux-gnu
-	exit ;;
-    frv:Linux:*:*)
-    	echo frv-unknown-linux-gnu
-	exit ;;
-    ia64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m32r*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m68*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    mips:Linux:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#undef CPU
-	#undef mips
-	#undef mipsel
-	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=mipsel
-	#else
-	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=mips
-	#else
-	CPU=
-	#endif
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^CPU/{
-		s: ::g
-		p
-	    }'`"
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
-	;;
-    mips64:Linux:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#undef CPU
-	#undef mips64
-	#undef mips64el
-	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=mips64el
-	#else
-	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=mips64
-	#else
-	CPU=
-	#endif
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^CPU/{
-		s: ::g
-		p
-	    }'`"
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
-	;;
-    or32:Linux:*:*)
-	echo or32-unknown-linux-gnu
-	exit ;;
-    ppc:Linux:*:*)
-	echo powerpc-unknown-linux-gnu
-	exit ;;
-    ppc64:Linux:*:*)
-	echo powerpc64-unknown-linux-gnu
-	exit ;;
-    alpha:Linux:*:*)
-	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
-	  EV5)   UNAME_MACHINE=alphaev5 ;;
-	  EV56)  UNAME_MACHINE=alphaev56 ;;
-	  PCA56) UNAME_MACHINE=alphapca56 ;;
-	  PCA57) UNAME_MACHINE=alphapca56 ;;
-	  EV6)   UNAME_MACHINE=alphaev6 ;;
-	  EV67)  UNAME_MACHINE=alphaev67 ;;
-	  EV68*) UNAME_MACHINE=alphaev68 ;;
-        esac
-	objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
-	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
-	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
-	exit ;;
-    parisc:Linux:*:* | hppa:Linux:*:*)
-	# Look for CPU level
-	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
-	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
-	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
-	  *)    echo hppa-unknown-linux-gnu ;;
-	esac
-	exit ;;
-    parisc64:Linux:*:* | hppa64:Linux:*:*)
-	echo hppa64-unknown-linux-gnu
-	exit ;;
-    s390:Linux:*:* | s390x:Linux:*:*)
-	echo ${UNAME_MACHINE}-ibm-linux
-	exit ;;
-    sh64*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    sh*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    sparc:Linux:*:* | sparc64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    vax:Linux:*:*)
-	echo ${UNAME_MACHINE}-dec-linux-gnu
-	exit ;;
-    x86_64:Linux:*:*)
-	echo x86_64-unknown-linux-gnu
-	exit ;;
-    xtensa*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    i*86:Linux:*:*)
-	# The BFD linker knows what the default object file format is, so
-	# first see if it will tell us. cd to the root directory to prevent
-	# problems with other programs or directories called `ld' in the path.
-	# Set LC_ALL=C to ensure ld outputs messages in English.
-	ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
-			 | sed -ne '/supported targets:/!d
-				    s/[ 	][ 	]*/ /g
-				    s/.*supported targets: *//
-				    s/ .*//
-				    p'`
-        case "$ld_supported_targets" in
-	  elf32-i386)
-		TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
-		;;
-	  a.out-i386-linux)
-		echo "${UNAME_MACHINE}-pc-linux-gnuaout"
-		exit ;;
-	  coff-i386)
-		echo "${UNAME_MACHINE}-pc-linux-gnucoff"
-		exit ;;
-	  "")
-		# Either a pre-BFD a.out linker (linux-gnuoldld) or
-		# one that does not give us useful --help.
-		echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
-		exit ;;
-	esac
-	# Determine whether the default compiler is a.out or elf
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#include <features.h>
-	#ifdef __ELF__
-	# ifdef __GLIBC__
-	#  if __GLIBC__ >= 2
-	LIBC=gnu
-	#  else
-	LIBC=gnulibc1
-	#  endif
-	# else
-	LIBC=gnulibc1
-	# endif
-	#else
-	#if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
-	LIBC=gnu
-	#else
-	LIBC=gnuaout
-	#endif
-	#endif
-	#ifdef __dietlibc__
-	LIBC=dietlibc
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^LIBC/{
-		s: ::g
-		p
-	    }'`"
-	test x"${LIBC}" != x && {
-		echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
-		exit
-	}
-	test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; }
-	;;
-    i*86:DYNIX/ptx:4*:*)
-	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
-	# earlier versions are messed up and put the nodename in both
-	# sysname and nodename.
-	echo i386-sequent-sysv4
-	exit ;;
-    i*86:UNIX_SV:4.2MP:2.*)
-        # Unixware is an offshoot of SVR4, but it has its own version
-        # number series starting with 2...
-        # I am not positive that other SVR4 systems won't match this,
-	# I just have to hope.  -- rms.
-        # Use sysv4.2uw... so that sysv4* matches it.
-	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
-	exit ;;
-    i*86:OS/2:*:*)
-	# If we were able to find `uname', then EMX Unix compatibility
-	# is probably installed.
-	echo ${UNAME_MACHINE}-pc-os2-emx
-	exit ;;
-    i*86:XTS-300:*:STOP)
-	echo ${UNAME_MACHINE}-unknown-stop
-	exit ;;
-    i*86:atheos:*:*)
-	echo ${UNAME_MACHINE}-unknown-atheos
-	exit ;;
-    i*86:syllable:*:*)
-	echo ${UNAME_MACHINE}-pc-syllable
-	exit ;;
-    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
-	echo i386-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    i*86:*DOS:*:*)
-	echo ${UNAME_MACHINE}-pc-msdosdjgpp
-	exit ;;
-    i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
-	UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
-	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
-		echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
-	else
-		echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
-	fi
-	exit ;;
-    i*86:*:5:[678]*)
-    	# UnixWare 7.x, OpenUNIX and OpenServer 6.
-	case `/bin/uname -X | grep "^Machine"` in
-	    *486*)	     UNAME_MACHINE=i486 ;;
-	    *Pentium)	     UNAME_MACHINE=i586 ;;
-	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
-	esac
-	echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
-	exit ;;
-    i*86:*:3.2:*)
-	if test -f /usr/options/cb.name; then
-		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
-		echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
-	elif /bin/uname -X 2>/dev/null >/dev/null ; then
-		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
-		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
-		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
-			&& UNAME_MACHINE=i586
-		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
-			&& UNAME_MACHINE=i686
-		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
-			&& UNAME_MACHINE=i686
-		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
-	else
-		echo ${UNAME_MACHINE}-pc-sysv32
-	fi
-	exit ;;
-    pc:*:*:*)
-	# Left here for compatibility:
-        # uname -m prints for DJGPP always 'pc', but it prints nothing about
-        # the processor, so we play safe by assuming i386.
-	echo i386-pc-msdosdjgpp
-        exit ;;
-    Intel:Mach:3*:*)
-	echo i386-pc-mach3
-	exit ;;
-    paragon:*:*:*)
-	echo i860-intel-osf1
-	exit ;;
-    i860:*:4.*:*) # i860-SVR4
-	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
-	  echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
-	else # Add other i860-SVR4 vendors below as they are discovered.
-	  echo i860-unknown-sysv${UNAME_RELEASE}  # Unknown i860-SVR4
-	fi
-	exit ;;
-    mini*:CTIX:SYS*5:*)
-	# "miniframe"
-	echo m68010-convergent-sysv
-	exit ;;
-    mc68k:UNIX:SYSTEM5:3.51m)
-	echo m68k-convergent-sysv
-	exit ;;
-    M680?0:D-NIX:5.3:*)
-	echo m68k-diab-dnix
-	exit ;;
-    M68*:*:R3V[5678]*:*)
-	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
-    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
-	OS_REL=''
-	test -r /etc/.relid \
-	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
-	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-	  && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
-	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
-	  && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
-    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
-        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-          && { echo i486-ncr-sysv4; exit; } ;;
-    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
-	echo m68k-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    mc68030:UNIX_System_V:4.*:*)
-	echo m68k-atari-sysv4
-	exit ;;
-    TSUNAMI:LynxOS:2.*:*)
-	echo sparc-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    rs6000:LynxOS:2.*:*)
-	echo rs6000-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
-	echo powerpc-unknown-lynxos${UNAME_RELEASE}
-	exit ;;
-    SM[BE]S:UNIX_SV:*:*)
-	echo mips-dde-sysv${UNAME_RELEASE}
-	exit ;;
-    RM*:ReliantUNIX-*:*:*)
-	echo mips-sni-sysv4
-	exit ;;
-    RM*:SINIX-*:*:*)
-	echo mips-sni-sysv4
-	exit ;;
-    *:SINIX-*:*:*)
-	if uname -p 2>/dev/null >/dev/null ; then
-		UNAME_MACHINE=`(uname -p) 2>/dev/null`
-		echo ${UNAME_MACHINE}-sni-sysv4
-	else
-		echo ns32k-sni-sysv
-	fi
-	exit ;;
-    PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
-                      # says <Richard.M.Bartel@ccMail.Census.GOV>
-        echo i586-unisys-sysv4
-        exit ;;
-    *:UNIX_System_V:4*:FTX*)
-	# From Gerald Hewes <hewes@openmarket.com>.
-	# How about differentiating between stratus architectures? -djm
-	echo hppa1.1-stratus-sysv4
-	exit ;;
-    *:*:*:FTX*)
-	# From seanf@swdc.stratus.com.
-	echo i860-stratus-sysv4
-	exit ;;
-    i*86:VOS:*:*)
-	# From Paul.Green@stratus.com.
-	echo ${UNAME_MACHINE}-stratus-vos
-	exit ;;
-    *:VOS:*:*)
-	# From Paul.Green@stratus.com.
-	echo hppa1.1-stratus-vos
-	exit ;;
-    mc68*:A/UX:*:*)
-	echo m68k-apple-aux${UNAME_RELEASE}
-	exit ;;
-    news*:NEWS-OS:6*:*)
-	echo mips-sony-newsos6
-	exit ;;
-    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
-	if [ -d /usr/nec ]; then
-	        echo mips-nec-sysv${UNAME_RELEASE}
-	else
-	        echo mips-unknown-sysv${UNAME_RELEASE}
-	fi
-        exit ;;
-    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
-	echo powerpc-be-beos
-	exit ;;
-    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
-	echo powerpc-apple-beos
-	exit ;;
-    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
-	echo i586-pc-beos
-	exit ;;
-    BeMac:Haiku:*:*)
-	echo powerpc-apple-haiku
-	exit ;;
-    BePC:Haiku:*:*)
-	echo i586-pc-haiku
-	exit ;;
-    SX-4:SUPER-UX:*:*)
-	echo sx4-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-5:SUPER-UX:*:*)
-	echo sx5-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-6:SUPER-UX:*:*)
-	echo sx6-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-7:SUPER-UX:*:*)
-	echo sx7-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-8:SUPER-UX:*:*)
-	echo sx8-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-8R:SUPER-UX:*:*)
-	echo sx8r-nec-superux${UNAME_RELEASE}
-	exit ;;
-    Power*:Rhapsody:*:*)
-	echo powerpc-apple-rhapsody${UNAME_RELEASE}
-	exit ;;
-    *:Rhapsody:*:*)
-	echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
-	exit ;;
-    *:Darwin:*:*)
-	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
-	case $UNAME_PROCESSOR in
-	    unknown) UNAME_PROCESSOR=powerpc ;;
-	esac
-	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
-	exit ;;
-    *:procnto*:*:* | *:QNX:[0123456789]*:*)
-	UNAME_PROCESSOR=`uname -p`
-	if test "$UNAME_PROCESSOR" = "x86"; then
-		UNAME_PROCESSOR=i386
-		UNAME_MACHINE=pc
-	fi
-	echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
-	exit ;;
-    *:QNX:*:4*)
-	echo i386-pc-qnx
-	exit ;;
-    NSE-?:NONSTOP_KERNEL:*:*)
-	echo nse-tandem-nsk${UNAME_RELEASE}
-	exit ;;
-    NSR-?:NONSTOP_KERNEL:*:*)
-	echo nsr-tandem-nsk${UNAME_RELEASE}
-	exit ;;
-    *:NonStop-UX:*:*)
-	echo mips-compaq-nonstopux
-	exit ;;
-    BS2000:POSIX*:*:*)
-	echo bs2000-siemens-sysv
-	exit ;;
-    DS/*:UNIX_System_V:*:*)
-	echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
-	exit ;;
-    *:Plan9:*:*)
-	# "uname -m" is not consistent, so use $cputype instead. 386
-	# is converted to i386 for consistency with other x86
-	# operating systems.
-	if test "$cputype" = "386"; then
-	    UNAME_MACHINE=i386
-	else
-	    UNAME_MACHINE="$cputype"
-	fi
-	echo ${UNAME_MACHINE}-unknown-plan9
-	exit ;;
-    *:TOPS-10:*:*)
-	echo pdp10-unknown-tops10
-	exit ;;
-    *:TENEX:*:*)
-	echo pdp10-unknown-tenex
-	exit ;;
-    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
-	echo pdp10-dec-tops20
-	exit ;;
-    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
-	echo pdp10-xkl-tops20
-	exit ;;
-    *:TOPS-20:*:*)
-	echo pdp10-unknown-tops20
-	exit ;;
-    *:ITS:*:*)
-	echo pdp10-unknown-its
-	exit ;;
-    SEI:*:*:SEIUX)
-        echo mips-sei-seiux${UNAME_RELEASE}
-	exit ;;
-    *:DragonFly:*:*)
-	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
-	exit ;;
-    *:*VMS:*:*)
-    	UNAME_MACHINE=`(uname -p) 2>/dev/null`
-	case "${UNAME_MACHINE}" in
-	    A*) echo alpha-dec-vms ; exit ;;
-	    I*) echo ia64-dec-vms ; exit ;;
-	    V*) echo vax-dec-vms ; exit ;;
-	esac ;;
-    *:XENIX:*:SysV)
-	echo i386-pc-xenix
-	exit ;;
-    i*86:skyos:*:*)
-	echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
-	exit ;;
-    i*86:rdos:*:*)
-	echo ${UNAME_MACHINE}-pc-rdos
-	exit ;;
-esac
-
-#echo '(No uname command or uname output not recognized.)' 1>&2
-#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
-
-eval $set_cc_for_build
-cat >$dummy.c <<EOF
-#ifdef _SEQUENT_
-# include <sys/types.h>
-# include <sys/utsname.h>
-#endif
-main ()
-{
-#if defined (sony)
-#if defined (MIPSEB)
-  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
-     I don't know....  */
-  printf ("mips-sony-bsd\n"); exit (0);
-#else
-#include <sys/param.h>
-  printf ("m68k-sony-newsos%s\n",
-#ifdef NEWSOS4
-          "4"
-#else
-	  ""
-#endif
-         ); exit (0);
-#endif
-#endif
-
-#if defined (__arm) && defined (__acorn) && defined (__unix)
-  printf ("arm-acorn-riscix\n"); exit (0);
-#endif
-
-#if defined (hp300) && !defined (hpux)
-  printf ("m68k-hp-bsd\n"); exit (0);
-#endif
-
-#if defined (NeXT)
-#if !defined (__ARCHITECTURE__)
-#define __ARCHITECTURE__ "m68k"
-#endif
-  int version;
-  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
-  if (version < 4)
-    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
-  else
-    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
-  exit (0);
-#endif
-
-#if defined (MULTIMAX) || defined (n16)
-#if defined (UMAXV)
-  printf ("ns32k-encore-sysv\n"); exit (0);
-#else
-#if defined (CMU)
-  printf ("ns32k-encore-mach\n"); exit (0);
-#else
-  printf ("ns32k-encore-bsd\n"); exit (0);
-#endif
-#endif
-#endif
-
-#if defined (__386BSD__)
-  printf ("i386-pc-bsd\n"); exit (0);
-#endif
-
-#if defined (sequent)
-#if defined (i386)
-  printf ("i386-sequent-dynix\n"); exit (0);
-#endif
-#if defined (ns32000)
-  printf ("ns32k-sequent-dynix\n"); exit (0);
-#endif
-#endif
-
-#if defined (_SEQUENT_)
-    struct utsname un;
-
-    uname(&un);
-
-    if (strncmp(un.version, "V2", 2) == 0) {
-	printf ("i386-sequent-ptx2\n"); exit (0);
-    }
-    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
-	printf ("i386-sequent-ptx1\n"); exit (0);
-    }
-    printf ("i386-sequent-ptx\n"); exit (0);
-
-#endif
-
-#if defined (vax)
-# if !defined (ultrix)
-#  include <sys/param.h>
-#  if defined (BSD)
-#   if BSD == 43
-      printf ("vax-dec-bsd4.3\n"); exit (0);
-#   else
-#    if BSD == 199006
-      printf ("vax-dec-bsd4.3reno\n"); exit (0);
-#    else
-      printf ("vax-dec-bsd\n"); exit (0);
-#    endif
-#   endif
-#  else
-    printf ("vax-dec-bsd\n"); exit (0);
-#  endif
-# else
-    printf ("vax-dec-ultrix\n"); exit (0);
-# endif
-#endif
-
-#if defined (alliant) && defined (i860)
-  printf ("i860-alliant-bsd\n"); exit (0);
-#endif
-
-  exit (1);
-}
-EOF
-
-$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
-	{ echo "$SYSTEM_NAME"; exit; }
-
-# Apollos put the system type in the environment.
-
-test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
-
-# Convex versions that predate uname can use getsysinfo(1)
-
-if [ -x /usr/convex/getsysinfo ]
-then
-    case `getsysinfo -f cpu_type` in
-    c1*)
-	echo c1-convex-bsd
-	exit ;;
-    c2*)
-	if getsysinfo -f scalar_acc
-	then echo c32-convex-bsd
-	else echo c2-convex-bsd
-	fi
-	exit ;;
-    c34*)
-	echo c34-convex-bsd
-	exit ;;
-    c38*)
-	echo c38-convex-bsd
-	exit ;;
-    c4*)
-	echo c4-convex-bsd
-	exit ;;
-    esac
-fi
-
-cat >&2 <<EOF
-$0: unable to guess system type
-
-This script, last modified $timestamp, has failed to recognize
-the operating system you are using. It is advised that you
-download the most up to date version of the config scripts from
-
-  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.guess
-and
-  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.sub
-
-If the version you run ($0) is already up to date, please
-send the following data and any information you think might be
-pertinent to <config-patches@gnu.org> in order to provide the needed
-information to handle your system.
-
-config.guess timestamp = $timestamp
-
-uname -m = `(uname -m) 2>/dev/null || echo unknown`
-uname -r = `(uname -r) 2>/dev/null || echo unknown`
-uname -s = `(uname -s) 2>/dev/null || echo unknown`
-uname -v = `(uname -v) 2>/dev/null || echo unknown`
-
-/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
-/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
-
-hostinfo               = `(hostinfo) 2>/dev/null`
-/bin/universe          = `(/bin/universe) 2>/dev/null`
-/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
-/bin/arch              = `(/bin/arch) 2>/dev/null`
-/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
-/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
-
-UNAME_MACHINE = ${UNAME_MACHINE}
-UNAME_RELEASE = ${UNAME_RELEASE}
-UNAME_SYSTEM  = ${UNAME_SYSTEM}
-UNAME_VERSION = ${UNAME_VERSION}
-EOF
-
-exit 1
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "timestamp='"
-# time-stamp-format: "%:y-%02m-%02d"
-# time-stamp-end: "'"
-# End:
diff --git a/config.sub b/config.sub
deleted file mode 100644
index 6759825a5b..0000000000
--- a/config.sub
+++ /dev/null
@@ -1,1658 +0,0 @@
-#! /bin/sh
-# Configuration validation subroutine script.
-#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
-#   Free Software Foundation, Inc.
-
-timestamp='2008-01-16'
-
-# This file is (in principle) common to ALL GNU software.
-# The presence of a machine in this file suggests that SOME GNU software
-# can handle that machine.  It does not imply ALL GNU software can.
-#
-# This file is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
-# 02110-1301, USA.
-#
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-
-# Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted ChangeLog entry.
-#
-# Configuration subroutine to validate and canonicalize a configuration type.
-# Supply the specified configuration type as an argument.
-# If it is invalid, we print an error message on stderr and exit with code 1.
-# Otherwise, we print the canonical config type on stdout and succeed.
-
-# This file is supposed to be the same for all GNU packages
-# and recognize all the CPU types, system types and aliases
-# that are meaningful with *any* GNU software.
-# Each package is responsible for reporting which valid configurations
-# it does not support.  The user should be able to distinguish
-# a failure to support a valid configuration from a meaningless
-# configuration.
-
-# The goal of this file is to map all the various variations of a given
-# machine specification into a single specification in the form:
-#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
-# or in some cases, the newer four-part form:
-#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
-# It is wrong to echo any other type of specification.
-
-me=`echo "$0" | sed -e 's,.*/,,'`
-
-usage="\
-Usage: $0 [OPTION] CPU-MFR-OPSYS
-       $0 [OPTION] ALIAS
-
-Canonicalize a configuration name.
-
-Operation modes:
-  -h, --help         print this help, then exit
-  -t, --time-stamp   print date of last modification, then exit
-  -v, --version      print version number, then exit
-
-Report bugs and patches to <config-patches@gnu.org>."
-
-version="\
-GNU config.sub ($timestamp)
-
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
-
-This is free software; see the source for copying conditions.  There is NO
-warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
-
-help="
-Try \`$me --help' for more information."
-
-# Parse command line
-while test $# -gt 0 ; do
-  case $1 in
-    --time-stamp | --time* | -t )
-       echo "$timestamp" ; exit ;;
-    --version | -v )
-       echo "$version" ; exit ;;
-    --help | --h* | -h )
-       echo "$usage"; exit ;;
-    -- )     # Stop option processing
-       shift; break ;;
-    - )	# Use stdin as input.
-       break ;;
-    -* )
-       echo "$me: invalid option $1$help"
-       exit 1 ;;
-
-    *local*)
-       # First pass through any local machine types.
-       echo $1
-       exit ;;
-
-    * )
-       break ;;
-  esac
-done
-
-case $# in
- 0) echo "$me: missing argument$help" >&2
-    exit 1;;
- 1) ;;
- *) echo "$me: too many arguments$help" >&2
-    exit 1;;
-esac
-
-# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
-# Here we must recognize all the valid KERNEL-OS combinations.
-maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
-case $maybe_os in
-  nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
-  uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
-  storm-chaos* | os2-emx* | rtmk-nova*)
-    os=-$maybe_os
-    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
-    ;;
-  *)
-    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
-    if [ $basic_machine != $1 ]
-    then os=`echo $1 | sed 's/.*-/-/'`
-    else os=; fi
-    ;;
-esac
-
-### Let's recognize common machines as not being operating systems so
-### that things like config.sub decstation-3100 work.  We also
-### recognize some manufacturers as not being operating systems, so we
-### can provide default operating systems below.
-case $os in
-	-sun*os*)
-		# Prevent following clause from handling this invalid input.
-		;;
-	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
-	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
-	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
-	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
-	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
-	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
-	-apple | -axis | -knuth | -cray)
-		os=
-		basic_machine=$1
-		;;
-	-sim | -cisco | -oki | -wec | -winbond)
-		os=
-		basic_machine=$1
-		;;
-	-scout)
-		;;
-	-wrs)
-		os=-vxworks
-		basic_machine=$1
-		;;
-	-chorusos*)
-		os=-chorusos
-		basic_machine=$1
-		;;
- 	-chorusrdb)
- 		os=-chorusrdb
-		basic_machine=$1
- 		;;
-	-hiux*)
-		os=-hiuxwe2
-		;;
-	-sco6)
-		os=-sco5v6
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco5)
-		os=-sco3.2v5
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco4)
-		os=-sco3.2v4
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco3.2.[4-9]*)
-		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco3.2v[4-9]*)
-		# Don't forget version if it is 3.2v4 or newer.
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco5v6*)
-		# Don't forget version if it is 3.2v4 or newer.
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-sco*)
-		os=-sco3.2v2
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-udk*)
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-isc)
-		os=-isc2.2
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-clix*)
-		basic_machine=clipper-intergraph
-		;;
-	-isc*)
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
-		;;
-	-lynx*)
-		os=-lynxos
-		;;
-	-ptx*)
-		basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
-		;;
-	-windowsnt*)
-		os=`echo $os | sed -e 's/windowsnt/winnt/'`
-		;;
-	-psos*)
-		os=-psos
-		;;
-	-mint | -mint[0-9]*)
-		basic_machine=m68k-atari
-		os=-mint
-		;;
-esac
-
-# Decode aliases for certain CPU-COMPANY combinations.
-case $basic_machine in
-	# Recognize the basic CPU types without company name.
-	# Some are omitted here because they have special meanings below.
-	1750a | 580 \
-	| a29k \
-	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
-	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
-	| am33_2.0 \
-	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
-	| bfin \
-	| c4x | clipper \
-	| d10v | d30v | dlx | dsp16xx \
-	| fido | fr30 | frv \
-	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
-	| i370 | i860 | i960 | ia64 \
-	| ip2k | iq2000 \
-	| m32c | m32r | m32rle | m68000 | m68k | m88k \
-	| maxq | mb | microblaze | mcore | mep \
-	| mips | mipsbe | mipseb | mipsel | mipsle \
-	| mips16 \
-	| mips64 | mips64el \
-	| mips64vr | mips64vrel \
-	| mips64orion | mips64orionel \
-	| mips64vr4100 | mips64vr4100el \
-	| mips64vr4300 | mips64vr4300el \
-	| mips64vr5000 | mips64vr5000el \
-	| mips64vr5900 | mips64vr5900el \
-	| mipsisa32 | mipsisa32el \
-	| mipsisa32r2 | mipsisa32r2el \
-	| mipsisa64 | mipsisa64el \
-	| mipsisa64r2 | mipsisa64r2el \
-	| mipsisa64sb1 | mipsisa64sb1el \
-	| mipsisa64sr71k | mipsisa64sr71kel \
-	| mipstx39 | mipstx39el \
-	| mn10200 | mn10300 \
-	| mt \
-	| msp430 \
-	| nios | nios2 \
-	| ns16k | ns32k \
-	| or32 \
-	| pdp10 | pdp11 | pj | pjl \
-	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
-	| pyramid \
-	| score \
-	| sh | sh[1234] | sh[24]a | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
-	| sh64 | sh64le \
-	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
-	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
-	| spu | strongarm \
-	| tahoe | thumb | tic4x | tic80 | tron \
-	| v850 | v850e \
-	| we32k \
-	| x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
-	| z8k)
-		basic_machine=$basic_machine-unknown
-		;;
-	m6811 | m68hc11 | m6812 | m68hc12)
-		# Motorola 68HC11/12.
-		basic_machine=$basic_machine-unknown
-		os=-none
-		;;
-	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
-		;;
-	ms1)
-		basic_machine=mt-unknown
-		;;
-
-	# We use `pc' rather than `unknown'
-	# because (1) that's what they normally are, and
-	# (2) the word "unknown" tends to confuse beginning users.
-	i*86 | x86_64)
-	  basic_machine=$basic_machine-pc
-	  ;;
-	# Object if more than one company name word.
-	*-*-*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
-		exit 1
-		;;
-	# Recognize the basic CPU types with company name.
-	580-* \
-	| a29k-* \
-	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
-	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
-	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
-	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
-	| avr-* | avr32-* \
-	| bfin-* | bs2000-* \
-	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
-	| clipper-* | craynv-* | cydra-* \
-	| d10v-* | d30v-* | dlx-* \
-	| elxsi-* \
-	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
-	| h8300-* | h8500-* \
-	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
-	| i*86-* | i860-* | i960-* | ia64-* \
-	| ip2k-* | iq2000-* \
-	| m32c-* | m32r-* | m32rle-* \
-	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
-	| m88110-* | m88k-* | maxq-* | mcore-* \
-	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
-	| mips16-* \
-	| mips64-* | mips64el-* \
-	| mips64vr-* | mips64vrel-* \
-	| mips64orion-* | mips64orionel-* \
-	| mips64vr4100-* | mips64vr4100el-* \
-	| mips64vr4300-* | mips64vr4300el-* \
-	| mips64vr5000-* | mips64vr5000el-* \
-	| mips64vr5900-* | mips64vr5900el-* \
-	| mipsisa32-* | mipsisa32el-* \
-	| mipsisa32r2-* | mipsisa32r2el-* \
-	| mipsisa64-* | mipsisa64el-* \
-	| mipsisa64r2-* | mipsisa64r2el-* \
-	| mipsisa64sb1-* | mipsisa64sb1el-* \
-	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
-	| mipstx39-* | mipstx39el-* \
-	| mmix-* \
-	| mt-* \
-	| msp430-* \
-	| nios-* | nios2-* \
-	| none-* | np1-* | ns16k-* | ns32k-* \
-	| orion-* \
-	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
-	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
-	| pyramid-* \
-	| romp-* | rs6000-* \
-	| sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
-	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
-	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
-	| sparclite-* \
-	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \
-	| tahoe-* | thumb-* \
-	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
-	| tron-* \
-	| v850-* | v850e-* | vax-* \
-	| we32k-* \
-	| x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
-	| xstormy16-* | xtensa*-* \
-	| ymp-* \
-	| z8k-*)
-		;;
-	# Recognize the basic CPU types without company name, with glob match.
-	xtensa*)
-		basic_machine=$basic_machine-unknown
-		;;
-	# Recognize the various machine names and aliases which stand
-	# for a CPU type and a company and sometimes even an OS.
-	386bsd)
-		basic_machine=i386-unknown
-		os=-bsd
-		;;
-	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
-		basic_machine=m68000-att
-		;;
-	3b*)
-		basic_machine=we32k-att
-		;;
-	a29khif)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
-    	abacus)
-		basic_machine=abacus-unknown
-		;;
-	adobe68k)
-		basic_machine=m68010-adobe
-		os=-scout
-		;;
-	alliant | fx80)
-		basic_machine=fx80-alliant
-		;;
-	altos | altos3068)
-		basic_machine=m68k-altos
-		;;
-	am29k)
-		basic_machine=a29k-none
-		os=-bsd
-		;;
-	amd64)
-		basic_machine=x86_64-pc
-		;;
-	amd64-*)
-		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	amdahl)
-		basic_machine=580-amdahl
-		os=-sysv
-		;;
-	amiga | amiga-*)
-		basic_machine=m68k-unknown
-		;;
-	amigaos | amigados)
-		basic_machine=m68k-unknown
-		os=-amigaos
-		;;
-	amigaunix | amix)
-		basic_machine=m68k-unknown
-		os=-sysv4
-		;;
-	apollo68)
-		basic_machine=m68k-apollo
-		os=-sysv
-		;;
-	apollo68bsd)
-		basic_machine=m68k-apollo
-		os=-bsd
-		;;
-	aux)
-		basic_machine=m68k-apple
-		os=-aux
-		;;
-	balance)
-		basic_machine=ns32k-sequent
-		os=-dynix
-		;;
-	blackfin)
-		basic_machine=bfin-unknown
-		os=-linux
-		;;
-	blackfin-*)
-		basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
-		;;
-	c90)
-		basic_machine=c90-cray
-		os=-unicos
-		;;
-	convex-c1)
-		basic_machine=c1-convex
-		os=-bsd
-		;;
-	convex-c2)
-		basic_machine=c2-convex
-		os=-bsd
-		;;
-	convex-c32)
-		basic_machine=c32-convex
-		os=-bsd
-		;;
-	convex-c34)
-		basic_machine=c34-convex
-		os=-bsd
-		;;
-	convex-c38)
-		basic_machine=c38-convex
-		os=-bsd
-		;;
-	cray | j90)
-		basic_machine=j90-cray
-		os=-unicos
-		;;
-	craynv)
-		basic_machine=craynv-cray
-		os=-unicosmp
-		;;
-	cr16)
-		basic_machine=cr16-unknown
-		os=-elf
-		;;
-	crds | unos)
-		basic_machine=m68k-crds
-		;;
-	crisv32 | crisv32-* | etraxfs*)
-		basic_machine=crisv32-axis
-		;;
-	cris | cris-* | etrax*)
-		basic_machine=cris-axis
-		;;
-	crx)
-		basic_machine=crx-unknown
-		os=-elf
-		;;
-	da30 | da30-*)
-		basic_machine=m68k-da30
-		;;
-	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
-		basic_machine=mips-dec
-		;;
-	decsystem10* | dec10*)
-		basic_machine=pdp10-dec
-		os=-tops10
-		;;
-	decsystem20* | dec20*)
-		basic_machine=pdp10-dec
-		os=-tops20
-		;;
-	delta | 3300 | motorola-3300 | motorola-delta \
-	      | 3300-motorola | delta-motorola)
-		basic_machine=m68k-motorola
-		;;
-	delta88)
-		basic_machine=m88k-motorola
-		os=-sysv3
-		;;
-	djgpp)
-		basic_machine=i586-pc
-		os=-msdosdjgpp
-		;;
-	dpx20 | dpx20-*)
-		basic_machine=rs6000-bull
-		os=-bosx
-		;;
-	dpx2* | dpx2*-bull)
-		basic_machine=m68k-bull
-		os=-sysv3
-		;;
-	ebmon29k)
-		basic_machine=a29k-amd
-		os=-ebmon
-		;;
-	elxsi)
-		basic_machine=elxsi-elxsi
-		os=-bsd
-		;;
-	encore | umax | mmax)
-		basic_machine=ns32k-encore
-		;;
-	es1800 | OSE68k | ose68k | ose | OSE)
-		basic_machine=m68k-ericsson
-		os=-ose
-		;;
-	fx2800)
-		basic_machine=i860-alliant
-		;;
-	genix)
-		basic_machine=ns32k-ns
-		;;
-	gmicro)
-		basic_machine=tron-gmicro
-		os=-sysv
-		;;
-	go32)
-		basic_machine=i386-pc
-		os=-go32
-		;;
-	h3050r* | hiux*)
-		basic_machine=hppa1.1-hitachi
-		os=-hiuxwe2
-		;;
-	h8300hms)
-		basic_machine=h8300-hitachi
-		os=-hms
-		;;
-	h8300xray)
-		basic_machine=h8300-hitachi
-		os=-xray
-		;;
-	h8500hms)
-		basic_machine=h8500-hitachi
-		os=-hms
-		;;
-	harris)
-		basic_machine=m88k-harris
-		os=-sysv3
-		;;
-	hp300-*)
-		basic_machine=m68k-hp
-		;;
-	hp300bsd)
-		basic_machine=m68k-hp
-		os=-bsd
-		;;
-	hp300hpux)
-		basic_machine=m68k-hp
-		os=-hpux
-		;;
-	hp3k9[0-9][0-9] | hp9[0-9][0-9])
-		basic_machine=hppa1.0-hp
-		;;
-	hp9k2[0-9][0-9] | hp9k31[0-9])
-		basic_machine=m68000-hp
-		;;
-	hp9k3[2-9][0-9])
-		basic_machine=m68k-hp
-		;;
-	hp9k6[0-9][0-9] | hp6[0-9][0-9])
-		basic_machine=hppa1.0-hp
-		;;
-	hp9k7[0-79][0-9] | hp7[0-79][0-9])
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k78[0-9] | hp78[0-9])
-		# FIXME: really hppa2.0-hp
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
-		# FIXME: really hppa2.0-hp
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k8[0-9][13679] | hp8[0-9][13679])
-		basic_machine=hppa1.1-hp
-		;;
-	hp9k8[0-9][0-9] | hp8[0-9][0-9])
-		basic_machine=hppa1.0-hp
-		;;
-	hppa-next)
-		os=-nextstep3
-		;;
-	hppaosf)
-		basic_machine=hppa1.1-hp
-		os=-osf
-		;;
-	hppro)
-		basic_machine=hppa1.1-hp
-		os=-proelf
-		;;
-	i370-ibm* | ibm*)
-		basic_machine=i370-ibm
-		;;
-# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
-	i*86v32)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv32
-		;;
-	i*86v4*)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv4
-		;;
-	i*86v)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv
-		;;
-	i*86sol2)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-solaris2
-		;;
-	i386mach)
-		basic_machine=i386-mach
-		os=-mach
-		;;
-	i386-vsta | vsta)
-		basic_machine=i386-unknown
-		os=-vsta
-		;;
-	iris | iris4d)
-		basic_machine=mips-sgi
-		case $os in
-		    -irix*)
-			;;
-		    *)
-			os=-irix4
-			;;
-		esac
-		;;
-	isi68 | isi)
-		basic_machine=m68k-isi
-		os=-sysv
-		;;
-	m68knommu)
-		basic_machine=m68k-unknown
-		os=-linux
-		;;
-	m68knommu-*)
-		basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
-		;;
-	m88k-omron*)
-		basic_machine=m88k-omron
-		;;
-	magnum | m3230)
-		basic_machine=mips-mips
-		os=-sysv
-		;;
-	merlin)
-		basic_machine=ns32k-utek
-		os=-sysv
-		;;
-	mingw32)
-		basic_machine=i386-pc
-		os=-mingw32
-		;;
-	mingw32ce)
-		basic_machine=arm-unknown
-		os=-mingw32ce
-		;;
-	miniframe)
-		basic_machine=m68000-convergent
-		;;
-	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
-		basic_machine=m68k-atari
-		os=-mint
-		;;
-	mips3*-*)
-		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
-		;;
-	mips3*)
-		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
-		;;
-	monitor)
-		basic_machine=m68k-rom68k
-		os=-coff
-		;;
-	morphos)
-		basic_machine=powerpc-unknown
-		os=-morphos
-		;;
-	msdos)
-		basic_machine=i386-pc
-		os=-msdos
-		;;
-	ms1-*)
-		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
-		;;
-	mvs)
-		basic_machine=i370-ibm
-		os=-mvs
-		;;
-	ncr3000)
-		basic_machine=i486-ncr
-		os=-sysv4
-		;;
-	netbsd386)
-		basic_machine=i386-unknown
-		os=-netbsd
-		;;
-	netwinder)
-		basic_machine=armv4l-rebel
-		os=-linux
-		;;
-	news | news700 | news800 | news900)
-		basic_machine=m68k-sony
-		os=-newsos
-		;;
-	news1000)
-		basic_machine=m68030-sony
-		os=-newsos
-		;;
-	news-3600 | risc-news)
-		basic_machine=mips-sony
-		os=-newsos
-		;;
-	necv70)
-		basic_machine=v70-nec
-		os=-sysv
-		;;
-	next | m*-next )
-		basic_machine=m68k-next
-		case $os in
-		    -nextstep* )
-			;;
-		    -ns2*)
-		      os=-nextstep2
-			;;
-		    *)
-		      os=-nextstep3
-			;;
-		esac
-		;;
-	nh3000)
-		basic_machine=m68k-harris
-		os=-cxux
-		;;
-	nh[45]000)
-		basic_machine=m88k-harris
-		os=-cxux
-		;;
-	nindy960)
-		basic_machine=i960-intel
-		os=-nindy
-		;;
-	mon960)
-		basic_machine=i960-intel
-		os=-mon960
-		;;
-	nonstopux)
-		basic_machine=mips-compaq
-		os=-nonstopux
-		;;
-	np1)
-		basic_machine=np1-gould
-		;;
-	nsr-tandem)
-		basic_machine=nsr-tandem
-		;;
-	op50n-* | op60c-*)
-		basic_machine=hppa1.1-oki
-		os=-proelf
-		;;
-	openrisc | openrisc-*)
-		basic_machine=or32-unknown
-		;;
-	os400)
-		basic_machine=powerpc-ibm
-		os=-os400
-		;;
-	OSE68000 | ose68000)
-		basic_machine=m68000-ericsson
-		os=-ose
-		;;
-	os68k)
-		basic_machine=m68k-none
-		os=-os68k
-		;;
-	pa-hitachi)
-		basic_machine=hppa1.1-hitachi
-		os=-hiuxwe2
-		;;
-	paragon)
-		basic_machine=i860-intel
-		os=-osf
-		;;
-	parisc)
-		basic_machine=hppa-unknown
-		os=-linux
-		;;
-	parisc-*)
-		basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
-		;;
-	pbd)
-		basic_machine=sparc-tti
-		;;
-	pbb)
-		basic_machine=m68k-tti
-		;;
-	pc532 | pc532-*)
-		basic_machine=ns32k-pc532
-		;;
-	pc98)
-		basic_machine=i386-pc
-		;;
-	pc98-*)
-		basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentium | p5 | k5 | k6 | nexgen | viac3)
-		basic_machine=i586-pc
-		;;
-	pentiumpro | p6 | 6x86 | athlon | athlon_*)
-		basic_machine=i686-pc
-		;;
-	pentiumii | pentium2 | pentiumiii | pentium3)
-		basic_machine=i686-pc
-		;;
-	pentium4)
-		basic_machine=i786-pc
-		;;
-	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
-		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentiumpro-* | p6-* | 6x86-* | athlon-*)
-		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
-		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pentium4-*)
-		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	pn)
-		basic_machine=pn-gould
-		;;
-	power)	basic_machine=power-ibm
-		;;
-	ppc)	basic_machine=powerpc-unknown
-		;;
-	ppc-*)	basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppcle | powerpclittle | ppc-le | powerpc-little)
-		basic_machine=powerpcle-unknown
-		;;
-	ppcle-* | powerpclittle-*)
-		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppc64)	basic_machine=powerpc64-unknown
-		;;
-	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
-		basic_machine=powerpc64le-unknown
-		;;
-	ppc64le-* | powerpc64little-*)
-		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ps2)
-		basic_machine=i386-ibm
-		;;
-	pw32)
-		basic_machine=i586-unknown
-		os=-pw32
-		;;
-	rdos)
-		basic_machine=i386-pc
-		os=-rdos
-		;;
-	rom68k)
-		basic_machine=m68k-rom68k
-		os=-coff
-		;;
-	rm[46]00)
-		basic_machine=mips-siemens
-		;;
-	rtpc | rtpc-*)
-		basic_machine=romp-ibm
-		;;
-	s390 | s390-*)
-		basic_machine=s390-ibm
-		;;
-	s390x | s390x-*)
-		basic_machine=s390x-ibm
-		;;
-	sa29200)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
-	sb1)
-		basic_machine=mipsisa64sb1-unknown
-		;;
-	sb1el)
-		basic_machine=mipsisa64sb1el-unknown
-		;;
-	sde)
-		basic_machine=mipsisa32-sde
-		os=-elf
-		;;
-	sei)
-		basic_machine=mips-sei
-		os=-seiux
-		;;
-	sequent)
-		basic_machine=i386-sequent
-		;;
-	sh)
-		basic_machine=sh-hitachi
-		os=-hms
-		;;
-	sh5el)
-		basic_machine=sh5le-unknown
-		;;
-	sh64)
-		basic_machine=sh64-unknown
-		;;
-	sparclite-wrs | simso-wrs)
-		basic_machine=sparclite-wrs
-		os=-vxworks
-		;;
-	sps7)
-		basic_machine=m68k-bull
-		os=-sysv2
-		;;
-	spur)
-		basic_machine=spur-unknown
-		;;
-	st2000)
-		basic_machine=m68k-tandem
-		;;
-	stratus)
-		basic_machine=i860-stratus
-		os=-sysv4
-		;;
-	sun2)
-		basic_machine=m68000-sun
-		;;
-	sun2os3)
-		basic_machine=m68000-sun
-		os=-sunos3
-		;;
-	sun2os4)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun3os3)
-		basic_machine=m68k-sun
-		os=-sunos3
-		;;
-	sun3os4)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun4os3)
-		basic_machine=sparc-sun
-		os=-sunos3
-		;;
-	sun4os4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	sun4sol2)
-		basic_machine=sparc-sun
-		os=-solaris2
-		;;
-	sun3 | sun3-*)
-		basic_machine=m68k-sun
-		;;
-	sun4)
-		basic_machine=sparc-sun
-		;;
-	sun386 | sun386i | roadrunner)
-		basic_machine=i386-sun
-		;;
-	sv1)
-		basic_machine=sv1-cray
-		os=-unicos
-		;;
-	symmetry)
-		basic_machine=i386-sequent
-		os=-dynix
-		;;
-	t3e)
-		basic_machine=alphaev5-cray
-		os=-unicos
-		;;
-	t90)
-		basic_machine=t90-cray
-		os=-unicos
-		;;
-	tic54x | c54x*)
-		basic_machine=tic54x-unknown
-		os=-coff
-		;;
-	tic55x | c55x*)
-		basic_machine=tic55x-unknown
-		os=-coff
-		;;
-	tic6x | c6x*)
-		basic_machine=tic6x-unknown
-		os=-coff
-		;;
-	tile*)
-		basic_machine=tile-unknown
-		os=-linux-gnu
-		;;
-	tx39)
-		basic_machine=mipstx39-unknown
-		;;
-	tx39el)
-		basic_machine=mipstx39el-unknown
-		;;
-	toad1)
-		basic_machine=pdp10-xkl
-		os=-tops20
-		;;
-	tower | tower-32)
-		basic_machine=m68k-ncr
-		;;
-	tpf)
-		basic_machine=s390x-ibm
-		os=-tpf
-		;;
-	udi29k)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
-	ultra3)
-		basic_machine=a29k-nyu
-		os=-sym1
-		;;
-	v810 | necv810)
-		basic_machine=v810-nec
-		os=-none
-		;;
-	vaxv)
-		basic_machine=vax-dec
-		os=-sysv
-		;;
-	vms)
-		basic_machine=vax-dec
-		os=-vms
-		;;
-	vpp*|vx|vx-*)
-		basic_machine=f301-fujitsu
-		;;
-	vxworks960)
-		basic_machine=i960-wrs
-		os=-vxworks
-		;;
-	vxworks68)
-		basic_machine=m68k-wrs
-		os=-vxworks
-		;;
-	vxworks29k)
-		basic_machine=a29k-wrs
-		os=-vxworks
-		;;
-	w65*)
-		basic_machine=w65-wdc
-		os=-none
-		;;
-	w89k-*)
-		basic_machine=hppa1.1-winbond
-		os=-proelf
-		;;
-	xbox)
-		basic_machine=i686-pc
-		os=-mingw32
-		;;
-	xps | xps100)
-		basic_machine=xps100-honeywell
-		;;
-	ymp)
-		basic_machine=ymp-cray
-		os=-unicos
-		;;
-	z8k-*-coff)
-		basic_machine=z8k-unknown
-		os=-sim
-		;;
-	none)
-		basic_machine=none-none
-		os=-none
-		;;
-
-# Here we handle the default manufacturer of certain CPU types.  It is in
-# some cases the only manufacturer, in others, it is the most popular.
-	w89k)
-		basic_machine=hppa1.1-winbond
-		;;
-	op50n)
-		basic_machine=hppa1.1-oki
-		;;
-	op60c)
-		basic_machine=hppa1.1-oki
-		;;
-	romp)
-		basic_machine=romp-ibm
-		;;
-	mmix)
-		basic_machine=mmix-knuth
-		;;
-	rs6000)
-		basic_machine=rs6000-ibm
-		;;
-	vax)
-		basic_machine=vax-dec
-		;;
-	pdp10)
-		# there are many clones, so DEC is not a safe bet
-		basic_machine=pdp10-unknown
-		;;
-	pdp11)
-		basic_machine=pdp11-dec
-		;;
-	we32k)
-		basic_machine=we32k-att
-		;;
-	sh[1234] | sh[24]a | sh[34]eb | sh[1234]le | sh[23]ele)
-		basic_machine=sh-unknown
-		;;
-	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
-		basic_machine=sparc-sun
-		;;
-	cydra)
-		basic_machine=cydra-cydrome
-		;;
-	orion)
-		basic_machine=orion-highlevel
-		;;
-	orion105)
-		basic_machine=clipper-highlevel
-		;;
-	mac | mpw | mac-mpw)
-		basic_machine=m68k-apple
-		;;
-	pmac | pmac-mpw)
-		basic_machine=powerpc-apple
-		;;
-	*-unknown)
-		# Make sure to match an already-canonicalized machine name.
-		;;
-	*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
-		exit 1
-		;;
-esac
-
-# Here we canonicalize certain aliases for manufacturers.
-case $basic_machine in
-	*-digital*)
-		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
-		;;
-	*-commodore*)
-		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
-		;;
-	*)
-		;;
-esac
-
-# Decode manufacturer-specific aliases for certain operating systems.
-
-if [ x"$os" != x"" ]
-then
-case $os in
-        # First match some system type aliases
-        # that might get confused with valid system types.
-	# -solaris* is a basic system type, with this one exception.
-	-solaris1 | -solaris1.*)
-		os=`echo $os | sed -e 's|solaris1|sunos4|'`
-		;;
-	-solaris)
-		os=-solaris2
-		;;
-	-svr4*)
-		os=-sysv4
-		;;
-	-unixware*)
-		os=-sysv4.2uw
-		;;
-	-gnu/linux*)
-		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
-		;;
-	# First accept the basic system types.
-	# The portable systems comes first.
-	# Each alternative MUST END IN A *, to match a version number.
-	# -sysv* is not here because it comes later, after sysvr4.
-	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
-	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
-	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
-	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
-	      | -aos* \
-	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
-	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
-	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
-	      | -openbsd* | -solidbsd* \
-	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
-	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
-	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
-	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
-	      | -chorusos* | -chorusrdb* \
-	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-	      | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
-	      | -uxpv* | -beos* | -mpeix* | -udk* \
-	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
-	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
-	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
-	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
-	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
-	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
-	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops*)
-	# Remember, each alternative MUST END IN *, to match a version number.
-		;;
-	-qnx*)
-		case $basic_machine in
-		    x86-* | i*86-*)
-			;;
-		    *)
-			os=-nto$os
-			;;
-		esac
-		;;
-	-nto-qnx*)
-		;;
-	-nto*)
-		os=`echo $os | sed -e 's|nto|nto-qnx|'`
-		;;
-	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
-	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
-	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
-		;;
-	-mac*)
-		os=`echo $os | sed -e 's|mac|macos|'`
-		;;
-	-linux-dietlibc)
-		os=-linux-dietlibc
-		;;
-	-linux*)
-		os=`echo $os | sed -e 's|linux|linux-gnu|'`
-		;;
-	-sunos5*)
-		os=`echo $os | sed -e 's|sunos5|solaris2|'`
-		;;
-	-sunos6*)
-		os=`echo $os | sed -e 's|sunos6|solaris3|'`
-		;;
-	-opened*)
-		os=-openedition
-		;;
-        -os400*)
-		os=-os400
-		;;
-	-wince*)
-		os=-wince
-		;;
-	-osfrose*)
-		os=-osfrose
-		;;
-	-osf*)
-		os=-osf
-		;;
-	-utek*)
-		os=-bsd
-		;;
-	-dynix*)
-		os=-bsd
-		;;
-	-acis*)
-		os=-aos
-		;;
-	-atheos*)
-		os=-atheos
-		;;
-	-syllable*)
-		os=-syllable
-		;;
-	-386bsd)
-		os=-bsd
-		;;
-	-ctix* | -uts*)
-		os=-sysv
-		;;
-	-nova*)
-		os=-rtmk-nova
-		;;
-	-ns2 )
-		os=-nextstep2
-		;;
-	-nsk*)
-		os=-nsk
-		;;
-	# Preserve the version number of sinix5.
-	-sinix5.*)
-		os=`echo $os | sed -e 's|sinix|sysv|'`
-		;;
-	-sinix*)
-		os=-sysv4
-		;;
-        -tpf*)
-		os=-tpf
-		;;
-	-triton*)
-		os=-sysv3
-		;;
-	-oss*)
-		os=-sysv3
-		;;
-	-svr4)
-		os=-sysv4
-		;;
-	-svr3)
-		os=-sysv3
-		;;
-	-sysvr4)
-		os=-sysv4
-		;;
-	# This must come after -sysvr4.
-	-sysv*)
-		;;
-	-ose*)
-		os=-ose
-		;;
-	-es1800*)
-		os=-ose
-		;;
-	-xenix)
-		os=-xenix
-		;;
-	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
-		os=-mint
-		;;
-	-aros*)
-		os=-aros
-		;;
-	-kaos*)
-		os=-kaos
-		;;
-	-zvmoe)
-		os=-zvmoe
-		;;
-	-none)
-		;;
-	*)
-		# Get rid of the `-' at the beginning of $os.
-		os=`echo $os | sed 's/[^-]*-//'`
-		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
-		exit 1
-		;;
-esac
-else
-
-# Here we handle the default operating systems that come with various machines.
-# The value should be what the vendor currently ships out the door with their
-# machine or put another way, the most popular os provided with the machine.
-
-# Note that if you're going to try to match "-MANUFACTURER" here (say,
-# "-sun"), then you have to tell the case statement up towards the top
-# that MANUFACTURER isn't an operating system.  Otherwise, code above
-# will signal an error saying that MANUFACTURER isn't an operating
-# system, and we'll never get to this point.
-
-case $basic_machine in
-        score-*)
-		os=-elf
-		;;
-        spu-*)
-		os=-elf
-		;;
-	*-acorn)
-		os=-riscix1.2
-		;;
-	arm*-rebel)
-		os=-linux
-		;;
-	arm*-semi)
-		os=-aout
-		;;
-        c4x-* | tic4x-*)
-        	os=-coff
-		;;
-	# This must come before the *-dec entry.
-	pdp10-*)
-		os=-tops20
-		;;
-	pdp11-*)
-		os=-none
-		;;
-	*-dec | vax-*)
-		os=-ultrix4.2
-		;;
-	m68*-apollo)
-		os=-domain
-		;;
-	i386-sun)
-		os=-sunos4.0.2
-		;;
-	m68000-sun)
-		os=-sunos3
-		# This also exists in the configure program, but was not the
-		# default.
-		# os=-sunos4
-		;;
-	m68*-cisco)
-		os=-aout
-		;;
-        mep-*)
-		os=-elf
-		;;
-	mips*-cisco)
-		os=-elf
-		;;
-	mips*-*)
-		os=-elf
-		;;
-	or32-*)
-		os=-coff
-		;;
-	*-tti)	# must be before sparc entry or we get the wrong os.
-		os=-sysv3
-		;;
-	sparc-* | *-sun)
-		os=-sunos4.1.1
-		;;
-	*-be)
-		os=-beos
-		;;
-	*-haiku)
-		os=-haiku
-		;;
-	*-ibm)
-		os=-aix
-		;;
-    	*-knuth)
-		os=-mmixware
-		;;
-	*-wec)
-		os=-proelf
-		;;
-	*-winbond)
-		os=-proelf
-		;;
-	*-oki)
-		os=-proelf
-		;;
-	*-hp)
-		os=-hpux
-		;;
-	*-hitachi)
-		os=-hiux
-		;;
-	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
-		os=-sysv
-		;;
-	*-cbm)
-		os=-amigaos
-		;;
-	*-dg)
-		os=-dgux
-		;;
-	*-dolphin)
-		os=-sysv3
-		;;
-	m68k-ccur)
-		os=-rtu
-		;;
-	m88k-omron*)
-		os=-luna
-		;;
-	*-next )
-		os=-nextstep
-		;;
-	*-sequent)
-		os=-ptx
-		;;
-	*-crds)
-		os=-unos
-		;;
-	*-ns)
-		os=-genix
-		;;
-	i370-*)
-		os=-mvs
-		;;
-	*-next)
-		os=-nextstep3
-		;;
-	*-gould)
-		os=-sysv
-		;;
-	*-highlevel)
-		os=-bsd
-		;;
-	*-encore)
-		os=-bsd
-		;;
-	*-sgi)
-		os=-irix
-		;;
-	*-siemens)
-		os=-sysv4
-		;;
-	*-masscomp)
-		os=-rtu
-		;;
-	f30[01]-fujitsu | f700-fujitsu)
-		os=-uxpv
-		;;
-	*-rom68k)
-		os=-coff
-		;;
-	*-*bug)
-		os=-coff
-		;;
-	*-apple)
-		os=-macos
-		;;
-	*-atari*)
-		os=-mint
-		;;
-	*)
-		os=-none
-		;;
-esac
-fi
-
-# Here we handle the case where we know the os, and the CPU type, but not the
-# manufacturer.  We pick the logical manufacturer.
-vendor=unknown
-case $basic_machine in
-	*-unknown)
-		case $os in
-			-riscix*)
-				vendor=acorn
-				;;
-			-sunos*)
-				vendor=sun
-				;;
-			-aix*)
-				vendor=ibm
-				;;
-			-beos*)
-				vendor=be
-				;;
-			-hpux*)
-				vendor=hp
-				;;
-			-mpeix*)
-				vendor=hp
-				;;
-			-hiux*)
-				vendor=hitachi
-				;;
-			-unos*)
-				vendor=crds
-				;;
-			-dgux*)
-				vendor=dg
-				;;
-			-luna*)
-				vendor=omron
-				;;
-			-genix*)
-				vendor=ns
-				;;
-			-mvs* | -opened*)
-				vendor=ibm
-				;;
-			-os400*)
-				vendor=ibm
-				;;
-			-ptx*)
-				vendor=sequent
-				;;
-			-tpf*)
-				vendor=ibm
-				;;
-			-vxsim* | -vxworks* | -windiss*)
-				vendor=wrs
-				;;
-			-aux*)
-				vendor=apple
-				;;
-			-hms*)
-				vendor=hitachi
-				;;
-			-mpw* | -macos*)
-				vendor=apple
-				;;
-			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
-				vendor=atari
-				;;
-			-vos*)
-				vendor=stratus
-				;;
-		esac
-		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
-		;;
-esac
-
-echo $basic_machine$os
-exit
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "timestamp='"
-# time-stamp-format: "%:y-%02m-%02d"
-# time-stamp-end: "'"
-# End:
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000000..49e0c79a4c
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,4235 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_INIT
+{
+AC_CONFIG_AUX_DIR(tool)
+
+AC_PREREQ(2.67)
+
+tooldir="$srcdir/tool"
+
+AC_DISABLE_OPTION_CHECKING
+
+m4_include([tool/m4/_colorize_result_prepare.m4])
+m4_include([tool/m4/ac_msg_result.m4])
+m4_include([tool/m4/colorize_result.m4])
+m4_include([tool/m4/ruby_append_option.m4])
+m4_include([tool/m4/ruby_append_options.m4])
+m4_include([tool/m4/ruby_check_builtin_func.m4])
+m4_include([tool/m4/ruby_check_builtin_setjmp.m4])
+m4_include([tool/m4/ruby_check_printf_prefix.m4])
+m4_include([tool/m4/ruby_check_setjmp.m4])
+m4_include([tool/m4/ruby_check_signedness.m4])
+m4_include([tool/m4/ruby_check_sizeof.m4])
+m4_include([tool/m4/ruby_check_sysconf.m4])
+m4_include([tool/m4/ruby_cppoutfile.m4])
+m4_include([tool/m4/ruby_decl_attribute.m4])
+m4_include([tool/m4/ruby_default_arch.m4])
+m4_include([tool/m4/ruby_define_if.m4])
+m4_include([tool/m4/ruby_defint.m4])
+m4_include([tool/m4/ruby_dtrace_available.m4])
+m4_include([tool/m4/ruby_dtrace_postprocess.m4])
+m4_include([tool/m4/ruby_func_attribute.m4])
+m4_include([tool/m4/ruby_mingw32.m4])
+m4_include([tool/m4/ruby_prepend_option.m4])
+m4_include([tool/m4/ruby_prog_gnu_ld.m4])
+m4_include([tool/m4/ruby_replace_funcs.m4])
+m4_include([tool/m4/ruby_replace_type.m4])
+m4_include([tool/m4/ruby_rm_recursive.m4])
+m4_include([tool/m4/ruby_setjmp_type.m4])
+m4_include([tool/m4/ruby_stack_grow_direction.m4])
+m4_include([tool/m4/ruby_try_cflags.m4])
+m4_include([tool/m4/ruby_try_cxxflags.m4])
+m4_include([tool/m4/ruby_try_ldflags.m4])
+m4_include([tool/m4/ruby_universal_arch.m4])
+m4_include([tool/m4/ruby_werror_flag.m4])
+
+AC_ARG_VAR([cflags], [additional CFLAGS (ignored when CFLAGS is given)])
+AC_ARG_VAR([cppflags], [additional CPPFLAGS (ignored when CPPFLAGS is given)])
+AC_ARG_VAR([cxxflags], [additional CXXFLAGS (ignored when CXXFLAGS is given)])
+
+: "environment section" && {
+HAVE_BASERUBY=yes
+BASERUBY_VERSION=
+AC_ARG_WITH(baseruby,
+	AS_HELP_STRING([--with-baseruby=RUBY], [use RUBY as baseruby; RUBY is the pathname of ruby]),
+	[AS_CASE(["$withval"],
+	    [*ruby*],[BASERUBY=$withval],
+	    [no],[HAVE_BASERUBY=no],
+	    [AC_MSG_ERROR(need ruby)])
+	],
+	[
+		AC_PATH_PROG([BASERUBY], [ruby], [false])
+	])
+AS_IF([test "$HAVE_BASERUBY" != no -a "`RUBYOPT=- $BASERUBY --disable=gems -e 'print 42 if RUBY_VERSION > "2.2"' 2>/dev/null`" = 42], [
+    BASERUBY="$BASERUBY --disable=gems"
+    BASERUBY_VERSION=`$BASERUBY -v`
+    $BASERUBY -C "$srcdir" tool/downloader.rb -d tool -e gnu config.guess config.sub >&AS_MESSAGE_FD
+], [
+    BASERUBY="echo executable host ruby is required.  use --with-baseruby option.; false"
+    HAVE_BASERUBY=no
+])
+AC_SUBST(BASERUBY)
+AC_SUBST(HAVE_BASERUBY)
+
+: ${GIT=git}
+HAVE_GIT=yes
+AC_ARG_WITH(git,
+	AS_HELP_STRING([--without-git], [never use git]),
+	[AS_CASE([$withval],
+	    [no],  [GIT=never-use HAVE_GIT=no],
+	    [yes], [],
+	    [GIT=$withval])])
+AS_IF([test x"$HAVE_GIT" = xyes], [command -v "$GIT" > /dev/null || HAVE_GIT=no])
+AC_SUBST(GIT)
+AC_SUBST(HAVE_GIT)
+
+eval `sed -n -e ['s/^@%:@define RUBY_[A-Z_]*VERSION_\([A-Z][A-Z][A-Z_0-9]*\) \([0-9][0-9]*\)$/\1=\2/p'] \
+      -e ['s/^@%:@define \(RUBY_PATCHLEVEL\) \(.*\)/\1=\2/p'] \
+     $srcdir/include/ruby/version.h $srcdir/version.h`
+for v in MAJOR MINOR TEENY; do
+    AS_IF([eval "test \"\$$v\" = ''"], [
+	AC_MSG_ERROR(could not determine $v number from version.h)
+    ])
+done
+AC_SUBST(MAJOR)
+AC_SUBST(MINOR)
+AC_SUBST(TEENY)
+AC_SUBST(RUBY_API_VERSION, '$(MAJOR).$(MINOR)')
+AC_SUBST(RUBY_PROGRAM_VERSION, '$(MAJOR).$(MINOR).$(TEENY)')
+
+AS_IF([test "$program_prefix" = NONE], [
+  program_prefix=
+])
+AS_IF([test "$prefix" -ef .], [
+  AC_MSG_ERROR(--prefix cannot be the current working directory.)
+])
+RUBY_BASE_NAME=`echo ruby | sed "$program_transform_name"`
+RUBYW_BASE_NAME=`echo rubyw | sed "$program_transform_name"`
+AC_SUBST(RUBY_BASE_NAME)
+AC_SUBST(RUBYW_BASE_NAME)
+AC_SUBST(RUBY_VERSION_NAME, '${RUBY_BASE_NAME}-${ruby_version}')
+
+dnl checks for alternative programs
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+AC_CANONICAL_TARGET
+AC_ARG_PROGRAM
+RUBY_RM_RECURSIVE
+AC_ARG_WITH(gcc,
+	AS_HELP_STRING([--without-gcc], [never use gcc]),
+	[
+	AS_CASE([$withval],
+	    [no],  [: ${CC=cc}],
+	    [yes], [: ${CC=gcc}],
+	           [CC=$withval])])
+dnl If the user switches compilers, we can't believe the cache
+AS_IF([test ! -z "$ac_cv_prog_CC" -a ! -z "$CC" -a "$CC" != "$ac_cv_prog_CC"], [
+  AC_MSG_ERROR(cached CC is different -- throw away $cache_file
+(it is also a good idea to do 'make clean' before compiling))
+])
+AS_CASE(["${build_os}"], [linux*|cygwin*], [
+    AC_CHECK_TOOLS([CC], [gcc clang cc])
+], [
+    # OpenBSD wants to prefer cc over gcc.
+    # See https://github.com/ruby/ruby/pull/2443
+    AC_CHECK_TOOLS([CC], [cl.exe clang cc gcc c99 /usr/ucb/cc])
+])
+
+AC_ARG_VAR([AR],       [Archiver command])
+AC_ARG_VAR([AS],       [Assembler command])
+AC_ARG_VAR([CC],       [C compiler command])
+AC_ARG_VAR([CXX],      [C++ compiler command])
+AC_ARG_VAR([LD],       [Linker command])
+AC_ARG_VAR([NM],       [Symbol list command])
+AC_ARG_VAR([OBJCOPY],  [Objcopy command])
+AC_ARG_VAR([OBJDUMP],  [Objdump command])
+AC_ARG_VAR([RANLIB],   [Ranlib command])
+AC_ARG_VAR([STRIP],    [Strip command])
+
+# We don't want to bother things like `ccache gcc`, `clang -shared-libgcc`, ...
+set rb_dummy ${CC}
+rb_CC=$2
+AS_CASE(["/${rb_CC} "],
+[*@<:@\ /@:>@"cc "*], [
+    # Don't try g++/clang++ when CC=cc
+    AC_CHECK_TOOLS([CXX],    [cl.exe CC c++])
+],
+[*icc*],              [
+    # Intel C++ has interprocedural optimizations.  It tends to come with its
+    # own linker etc.
+    AC_CHECK_TOOL([AR],      [`echo "${rb_CC}" | sed s/icc/xiar/`])
+    AC_CHECK_TOOL([CXX],     [`echo "${rb_CC}" | sed s/icc/icpc/`])
+    AC_CHECK_TOOL([LD],      [`echo "${rb_CC}" | sed s/icc/xild/`])
+],
+[*gcc*],              [
+    # Dito for GCC.
+    AC_CHECK_TOOL([LD],      [`echo "${rb_CC}" | sed s/gcc/ld/`])
+    AC_CHECK_TOOL([AR],      [`echo "${rb_CC}" | sed s/gcc/gcc-ar/`])
+    AC_CHECK_TOOL([CXX],     [`echo "${rb_CC}" | sed s/gcc/g++/`])
+    AC_CHECK_TOOL([NM],      [`echo "${rb_CC}" | sed s/gcc/gcc-nm/`])
+    AC_CHECK_TOOL([RANLIB],  [`echo "${rb_CC}" | sed s/gcc/gcc-ranlib/`])
+],
+[*clang*],            [
+    # Dito for LLVM.  Note however that llvm-as is a LLVM-IR to LLVM bitcode
+    # assembler that does not target your machine native binary.
+    : ${LD:="${CC}"}         # ... try -fuse-ld=lld ?
+    AC_CHECK_TOOL([AR],      [`echo "${rb_CC}" | sed s/clang/llvm-ar/`])
+#   AC_CHECK_TOOL([AS],      [`echo "${rb_CC}" | sed s/clang/llvm-as/`])
+    AC_CHECK_TOOL([CXX],     [`echo "${rb_CC}" | sed s/clang/clang++/`])
+    AC_CHECK_TOOL([NM],      [`echo "${rb_CC}" | sed s/clang/llvm-nm/`])
+    AC_CHECK_TOOL([OBJCOPY], [`echo "${rb_CC}" | sed s/clang/llvm-objcopy/`])
+    AC_CHECK_TOOL([OBJDUMP], [`echo "${rb_CC}" | sed s/clang/llvm-objdump/`])
+    AC_CHECK_TOOL([RANLIB],  [`echo "${rb_CC}" | sed s/clang/llvm-ranlib/`])
+    AC_CHECK_TOOL([STRIP],   [`echo "${rb_CC}" | sed s/clang/llvm-strip/`])
+])
+AS_UNSET(rb_CC)
+AS_UNSET(rb_dummy)
+
+AS_CASE(["${build_os}"],
+[solaris*], [
+    AC_PATH_TOOL([LD], [ld], [/usr/ccs/bin/ld], [/usr/ccs/bin:$PATH])
+],
+[aix*], [
+    AC_PATH_TOOL([NM], [nm], [/usr/ccs/bin/nm], [/usr/ccs/bin:$PATH])
+])
+AS_CASE(["${target_os}"],
+[cygwin*|mingw*], [
+    ac_cv_prog_ac_ct_OBJCOPY=":"
+])
+
+rb_test_CFLAGS=${CFLAGS+yes}
+rb_test_CXXFLAGS=${CXXFLAGS+yes}
+
+# BSD's ports and MacPorts prefix GNU binutils with 'g'
+
+dnl Seems necessarily in order to add -std=gnu99 option for gcc 4.9.
+m4_version_prereq([2.70], [], [AC_PROG_CC_C99])
+
+AC_PROG_CXX
+AC_PROG_CPP
+AC_PROG_RANLIB
+AC_CHECK_TOOLS([AR],      [gar ar])
+AC_CHECK_TOOLS([AS],      [gas as])
+AC_CHECK_TOOLS([LD],      [gld ld]) # ... try gold ?
+AC_CHECK_TOOLS([NM],      [gnm nm])
+AC_CHECK_TOOLS([OBJCOPY], [gobjcopy objcopy])
+AC_CHECK_TOOLS([OBJDUMP], [gobjdump objdump])
+AC_CHECK_TOOLS([STRIP],   [gstrip strip], [:])
+
+AS_IF([test ! $rb_test_CFLAGS], [AS_UNSET(CFLAGS)]); AS_UNSET(rb_test_CFLAGS)
+AS_IF([test ! $rb_test_CXXFLAGS], [AS_UNSET(CXXFLAGS)]); AS_UNSET(rb_save_CXXFLAGS)
+
+AS_IF([test "${CXX}" = "g++" -a -z "${GXX}"], [
+    # AC_PROG_CXX sets $CXX to "g++" when it purposefully finds that there is
+    # _no_ g++.  This brain-damaged design must be worked around.  Thankfully,
+    # similar thing doesn't happen for AC_PROG_CC.
+    rb_there_is_in_fact_no_gplusplus_but_autoconf_is_cheating_us=true
+])
+
+test x"$target_alias" = x &&
+target_os=`echo $target_os | sed 's/linux-gnu$/linux/;s/linux-gnu/linux-/'`
+ac_install_sh='' # unusable for extension libraries.
+
+AC_ARG_WITH(os-version-style,
+	AS_HELP_STRING([--with-os-version-style=TYPE],
+		       [OS version number for target and target_os [[full]]]
+		       [(full|teeny|minor+0|minor|major+0|major|none)]),
+	[os_version_style=$withval],
+	[os_version_style=full
+	    AS_CASE($target_os, [[*[0-9].*]],
+		[AS_CASE([`/usr/bin/ruby -e 'puts RUBY_PLATFORM' 2>/dev/null`],
+		    [[*-*[0-9].*.0]], [os_version_style=minor+0],
+		    [[*-*[0-9].*.*]], [os_version_style=full],
+		    [[*-*[0-9].0]  ], [os_version_style=major+0],
+		    [[*-*[0-9].*]  ], [os_version_style=minor],
+		    [[*-*[0-9]]    ], [os_version_style=major],
+		)])
+	])
+os_version_style_transform=
+AS_CASE("${os_version_style}",
+	[full|teeny], [],
+	[minor+0], [os_version_style_transform=['s/\([0-9]\.[0-9][0-9]*\)\.[0-9][.0-9]*$/\1.0/']],
+	[minor],   [os_version_style_transform=['s/\([0-9]\.[0-9][0-9]*\)\.[0-9][.0-9]*$/\1/']],
+	[major+0], [os_version_style_transform=['s/\([0-9]\)\.[0-9][.0-9]*$/\1.0/']],
+	[major],   [os_version_style_transform=['s/\([0-9]\)\.[0-9][.0-9]*$/\1/']],
+	[none],    [os_version_style_transform=['s/[0-9]*\.[0-9][.0-9]*$//']],
+	[AC_MSG_ERROR(unknown --with-os-version-style: $withval)])
+AS_IF([test -z "$target_alias" -a -n "$os_version_style_transform"],
+	[
+	target=`echo ${target} | sed "$os_version_style_transform"`
+	target_os=`echo ${target_os} | sed "$os_version_style_transform"`
+	])
+
+AC_ARG_WITH(arch,
+	AS_HELP_STRING([--with-arch=ARCHS],
+		       [build an Apple/NeXT Multi Architecture Binary (MAB);
+                          ARCHS is a comma-delimited list of architectures for
+                          which to build; if this option is disabled or omitted
+			  entirely, then the package will be built only for the
+			  target platform]),
+       [target_archs="$withval"], [unset target_archs])
+
+AC_ARG_ENABLE(load-relative,
+       AS_HELP_STRING([--enable-load-relative], [resolve load paths at run time]),
+       [load_relative=$enableval])
+
+# checks for UNIX variants that set C preprocessor variables
+AC_USE_SYSTEM_EXTENSIONS
+
+dnl Checks for programs.
+
+cflagspat=
+test -z "$optflags" ||
+    cflagspat="$cflagspat;s|"`eval echo '"'"${optflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^ */ /;s/ *$/ /'`'| |g'
+test -z "$debugflags" ||
+    cflagspat="$cflagspat;s|"`eval echo '"'"${debugflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^ */ /;s/ *$/ /'`'| |g'
+test -z "$warnflags" ||
+    cflagspat="$cflagspat;s|"`eval echo '"'"${warnflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^ */ /;s/ *$/ /'`'| |g'
+AS_IF([test -z "${CFLAGS+set}"], [
+    cflags=`echo " $cflags " | sed "$cflagspat;s/^ *//;s/ *$//"`
+    orig_cflags="$cflags"
+    cflags="$cflags "'${optflags} ${debugflags} ${warnflags}'
+])
+dnl AS_IF([test -z "${CXXFLAGS+set}"], [
+dnl     cxxflags=`echo " $cxxflags " | sed "$cflagspat;s/^ *//;s/ *$//"`
+dnl     orig_cxxflags="$cxxflags"
+dnl     cxxflags="$cxxflags "'${optflags} ${debugflags} ${warnflags}'
+dnl ])
+
+AS_CASE(["$host_os:$build_os"],
+[darwin*:darwin*], [
+    # Following Apple deployed clang are broken
+    # clang version 1.0 (http://llvm.org/svn/llvm-project/cfe/tags/Apple/clang-23 exported)
+    # Apple clang version 2.0 (tags/Apple/clang-137) (based on LLVM 2.9svn)
+    # Apple clang version 2.1 (tags/Apple/clang-163.7.1) (based on LLVM 3.0svn)
+    AC_PREPROC_IFELSE(
+	[AC_LANG_PROGRAM([
+	    @%:@if defined __APPLE_CC__ && defined __clang_major__ && __clang_major__ < 3
+	    @%:@error premature clang
+	    @%:@endif
+	])],
+	[],
+	[AC_MSG_ERROR([clang version 3.0 or later is required])])
+])
+
+AS_CASE(["$target_os"],
+[darwin*], [
+    AC_MSG_CHECKING(if minimum required OS X version is supported)
+    AC_PREPROC_IFELSE([AC_LANG_SOURCE([[@%:@include <AvailabilityMacros.h>
+	@%:@if MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_5
+	@%:@error pre OS X 10.5
+	[!<===== pre OS X 10.5 =====>]
+	@%:@endif
+	]])],
+	[macosx_min_required=yes],
+	[AC_MSG_RESULT(no)
+	AC_MSG_ERROR([Unsupported OS X version is required])])
+    AC_MSG_RESULT(${macosx_min_required})
+])
+
+RUBY_MINGW32
+AC_SUBST(GCC)
+AC_SUBST(LD)
+AS_IF([test "$GCC" = yes], [
+    linker_flag=-Wl,
+    : ${optflags=-O3}
+    gcc_major=`echo =__GNUC__ | $CC -E -xc - | sed '/^=/!d;s///'`
+    gcc_minor=`echo =__GNUC_MINOR__ | $CC -E -xc - | sed '/^=/!d;s///'`
+    test -n "$gcc_major" || gcc_major=0
+    test -n "$gcc_minor" || gcc_minor=0
+    icc_version=`echo =__ICC | $CC -E -xc - | sed '/^=/!d;s///;/^__ICC/d'`
+    test -n "$icc_version" || icc_version=0
+    # RUBY_APPEND_OPTIONS(XCFLAGS, ["-include ruby/config.h" "-include ruby/missing.h"])
+], [
+    linker_flag=
+])
+
+AS_IF([test "$GCC" = yes -a "$gcc_major" -lt 3 ], [
+    AC_MSG_ERROR([too old GCC])
+])
+
+RUBY_PROG_GNU_LD
+RUBY_CPPOUTFILE
+
+: ${OUTFLAG='-o '}
+: ${COUTFLAG=${OUTFLAG}}
+: ${CSRCFLAG=''}
+AC_SUBST(OUTFLAG)
+AC_SUBST(COUTFLAG)
+AC_SUBST(CSRCFLAG)
+
+: ${MJIT_CC=$CC}
+AS_IF([test "x$cross_compiling" = xno], [
+    AC_PATH_PROG([MJIT_CC], ${MJIT_CC})
+
+    # if $CC is in /usr/lib/ccache/$CC, search original $CC (disable ccache)
+    AS_IF([echo $RUBY_DEBUG | grep ci > /dev/null &&
+           echo $MJIT_CC | grep ^/usr/lib/ccache > /dev/null], [
+           PATH=`echo $PATH | sed "s/\/usr\/lib\/ccache://"` MJIT_CC=`which $CC`])
+
+    AS_CASE([$target_os],
+	[*mingw*], [command -v cygpath > /dev/null && MJIT_CC=`cygpath -ma $MJIT_CC`])
+    shift 2
+    MJIT_CC="$MJIT_CC${1+ }$*"
+])
+
+AS_CASE(["$build_os"],
+  [darwin1*.*], [
+    # Xcode linker warns for deprecated architecture and wrongly
+    # installed TBD files.
+    CC_WRAPPER=""
+    echo 'int main(void) {return 0;}' > conftest.c
+    AS_IF([$CC -framework Foundation -o conftest conftest.c 2>&1 |
+	   grep '^ld: warning: text-based stub file' >/dev/null], [
+	CC_WRAPPER=`cd -P "${tooldir}" && pwd`/darwin-cc
+	CC="$CC_WRAPPER $CC"
+    ])
+    rm -fr conftest*
+  ])
+
+cc_version=
+for option in --version -v -V -qversion; do
+    cc_version_message=`$CC $option 2>&1`
+    cc_version_status=$?
+    AS_CASE($cc_version_status, [0], [:], [continue])
+    AS_CASE($cc_version_message, [*Warning*], [continue])
+    cc_version='$(CC) '$option
+    break
+done
+AC_SUBST(CC_VERSION, $cc_version)
+AC_SUBST(CC_VERSION_MESSAGE, $cc_version_message)
+
+: ${DLDFLAGS="$LDFLAGS"}
+
+RUBY_UNIVERSAL_ARCH
+AS_IF([test "$target_cpu" != "$host_cpu" -a "$GCC" = yes -a "$cross_compiling" = no -a "${universal_binary:-no}" = no], [
+    RUBY_DEFAULT_ARCH("$target_cpu")
+])
+host_os=$target_os
+host_vendor=$target_vendor
+host_cpu=$target_cpu
+host=$target
+host_alias=$target_alias
+
+AC_CACHE_CHECK([for $AR flags], [rb_cv_arflags], [
+    AS_IF([$AR rcD conftest.a > /dev/null 2>&1 && rm conftest.a],
+	[rb_cv_arflags=rcD], [rb_cv_arflags=rcu])
+])
+AC_SUBST(ARFLAGS, ["$rb_cv_arflags "])
+AC_SUBST(ASFLAGS)
+
+AS_CASE(["$target_os"],
+[cygwin*|mingw*], [
+    AC_CHECK_TOOL(WINDRES, windres)
+    AC_CHECK_TOOL(DLLWRAP, dllwrap)
+    target=`echo $target | sed "s/^$target_cpu-/-/"`
+    target_alias=`echo $target_alias | sed "s/^$target_cpu-/-/"`
+    target_cpu=`echo $target_cpu | sed s/i.86/i386/`
+    AS_CASE(["$target"], [-*], [ target="$target_cpu${target}"])
+    AS_CASE(["$target_alias"], [-*], [ target_alias="$target_cpu${target_alias}"])
+    AS_CASE(["$target_os"],
+    [mingw*], [
+	test "$rb_cv_msvcrt" = "" && unset rb_cv_msvcrt
+	AC_CACHE_CHECK(for mingw32 runtime DLL, rb_cv_msvcrt, [
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdio.h>]],
+		    [[FILE* volatile f = stdin; return 0;]])],
+		    [rb_cv_msvcrt=`$OBJDUMP -p conftest$ac_exeext |
+				   tr A-Z a-z |
+				   sed -n '/^[[ 	]]*dll name: \(msvc.*\)\.dll$/{s//\1/p;q;}'`],
+		    [rb_cv_msvcrt=msvcrt])
+	test "$rb_cv_msvcrt" = "" && rb_cv_msvcrt=msvcrt])
+	RT_VER=`echo "$rb_cv_msvcrt" | tr -cd [0-9]`
+	test "$RT_VER" = "" && RT_VER=60
+	AC_DEFINE_UNQUOTED(RUBY_MSVCRT_VERSION, $RT_VER)
+	sysconfdir=
+    ])
+    : ${enable_shared=yes}
+    ],
+[hiuxmpp*], [AC_DEFINE(__HIUX_MPP__)])    # by TOYODA Eizi <toyoda@npd.kishou.go.jp>
+
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+AC_PROG_INSTALL
+AC_PROG_MKDIR_P
+AS_IF([test "x$MKDIR_P" = "x -d"], [
+  AS_IF([test x"$as_mkdir_p" != xfalse], [
+    MKDIR_P='mkdir -p'
+    echo "use 'mkdir -p' as MKDIR_P"
+  ], [
+    AC_MSG_ERROR([mkdir -p is required])
+  ])
+])
+MAKEDIRS="$MKDIR_P"
+AC_SUBST(MAKEDIRS)
+
+AC_CHECK_PROG([DTRACE], [${ac_tool_prefix}dtrace], [${ac_tool_prefix}dtrace])
+AS_IF([test "$cross_compiling:$ac_cv_prog_DTRACE" = no: -a -n "$ac_tool_prefix"], [
+    AC_CHECK_PROG([DTRACE], [dtrace], [dtrace])
+])
+
+AC_CHECK_PROGS(DOT, dot)
+AC_CHECK_PROGS(DOXYGEN, doxygen)
+
+for prog in ${ac_tool_prefix:+${ac_tool_prefix}pkg-config} pkg-config; do
+    AC_CHECK_PROG(PKG_CONFIG, $prog, [$prog], [], [],
+        [`"$as_dir/$ac_word$ac_exec_ext" --print-errors --version > /dev/null 2>&1 || echo "$as_dir/$ac_word$ac_exec_ext"`])
+    test -z "${PKG_CONFIG}" || break
+done
+
+AC_MSG_CHECKING([whether it is Android])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+	@%:@ifdef __ANDROID__
+	@%:@error android
+	@%:@endif
+]], [[]])],
+[AC_MSG_RESULT(no)],
+[
+	AC_MSG_RESULT(yes)
+	target_os=${target_os}-android
+	AC_MSG_CHECKING([for Android API version])
+        # hacky workaround: https://github.com/termux/termux-packages/issues/6176
+        rb_android_api=`getprop ro.build.version.sdk`
+        AC_MSG_RESULT($rb_android_api)
+        RUBY_APPEND_OPTIONS(CPPFLAGS, -D__ANDROID_API__=$rb_android_api -Wno-macro-redefined)
+])
+
+AC_SUBST(RM, ['rm -f'])
+AC_SUBST(CP, ['cp'])
+RMDIRS='$(top_srcdir)/tool/rmdirs'
+RMDIR=rmdir
+mkdir "rmdirs_$$_test" "rmdirs_$$_test/a"
+rmdir --ignore-fail-on-non-empty "rmdirs_$$_test" 2>/dev/null &&
+RMDIR='rmdir --ignore-fail-on-non-empty'
+$RMDIR -p "rmdirs_$$_test/a" 2>/dev/null &&
+{ test -d "rmdirs_$$_test" || RMDIRS="$RMDIR -p"; }
+rmdir "rmdirs_$$_test/a" "rmdirs_$$_test" 2>/dev/null
+AC_SUBST(RMDIR)
+AC_SUBST(RMDIRS)
+AC_SUBST(RMALL, ['rm -fr'])
+
+AC_MSG_CHECKING([for cd using physical directory])
+rm -fr conf$$.dir
+mkdir conf$$.dir &&
+(cd conf$$.dir && mkdir src build && cd src &&
+$as_ln_s ../build . > /dev/null 2>&1 && cd build &&
+for chdir in 'cd -P' 'PWD= cd'; do
+    /bin/sh -c "$chdir ../src && echo '$chdir' > cdcmd" 2> /dev/null && break
+done)
+AS_IF([test -f conf$$.dir/src/cdcmd], [
+    read CHDIR < conf$$.dir/src/cdcmd 2> /dev/null
+], [
+    CHDIR=cd
+])
+rm -fr conf$$.dir
+AC_MSG_RESULT([$CHDIR])
+AC_SUBST(CHDIR)
+}
+
+: "compiler section" && {
+RUBY_WERROR_FLAG([
+    AC_MSG_CHECKING([whether CFLAGS is valid])
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+	[AC_MSG_RESULT(yes)],
+	[
+	AC_MSG_RESULT(no)
+	AC_MSG_ERROR([something wrong with CFLAGS="$CFLAGS"])
+	]
+    )
+
+    AC_MSG_CHECKING([whether LDFLAGS is valid])
+    {
+	mkdir tmp.$$.try_link &&
+	cd tmp.$$.try_link &&
+	cp ../confdefs.h . &&
+	echo '<?xml?><plist><dict><key>CFBundleIdentifier</key><string></string></dict></plist>' > Info.plist &&
+	:
+    } || AC_MSG_ERROR([failed to make temporary directory])
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+	[AC_MSG_RESULT(yes)],
+	[
+	cd .. && rm -fr tmp.$$.try_link
+	AC_MSG_RESULT(no)
+	AC_MSG_ERROR([something wrong with LDFLAGS="$LDFLAGS"])
+	]
+    )
+    cd .. && rm -fr tmp.$$.try_link
+])
+
+: ${RPATHFLAG=''}
+rpathflag=''
+AS_IF([test x"${RPATHFLAG}" = x], [
+    AS_CASE(["$target_os"],
+	[hpux*], [AS_IF([test "$rb_cv_prog_gnu_ld" = no], [rpathflag='+b '])],
+	[aix*], [rpathflag='-blibpath:'],
+	[for rpathflag in -R "-rpath "; do
+	    AS_CASE("$rpathflag",
+		    [*" "], [AS_CASE(["${linker_flag}"],
+				     [*,], [rpathflag=`echo "$rpathflag" | tr ' ' ,`])])
+	    rpathflag="${linker_flag}${rpathflag}"
+	    RUBY_TRY_LDFLAGS([${rpathflag}.], [], [rpathflag=])
+	    AS_IF([test "x${rpathflag}" != x], [])
+        done])
+], [
+    rpathflag=`echo "$RPATHFLAG" | sed 's/%.*//'`
+])
+
+RUBY_TRY_CFLAGS(-fdeclspec, [
+  RUBY_APPEND_OPTIONS(CC, -fdeclspec)
+  RUBY_APPEND_OPTIONS(MJIT_CC, -fdeclspec)
+])
+RUBY_TRY_CXXFLAGS(-fdeclspec, [RUBY_APPEND_OPTIONS(CXX, -fdeclspec)])
+
+AS_CASE([$RUBY_PATCHLEVEL], [-*],
+	[RUBY_DEVEL=yes], [RUBY_DEVEL=no])
+particular_werror_flags=$RUBY_DEVEL
+AC_ARG_ENABLE(werror,
+	AS_HELP_STRING([--disable-werror],
+		       [don't make warnings into errors
+		       even if a compiler support -Werror feature
+		       [[disabled by default unless development version]]]),
+	[particular_werror_flags=$enableval])
+
+rb_cv_warnflags="$warnflags"
+AS_CASE(["$GCC:${warnflags+set}:${extra_warnflags:+set}:"],
+[yes::*|yes:*:set:], [# GCC && (!warnflags || extra_warnflags)
+    AS_IF([test $gcc_major -ge 4], [
+	extra_warnflags="$extra_warnflags -Werror=extra-tokens"
+    ])
+    AS_IF([test $gcc_major -ge 5 -a $gcc_major -le 6], [
+	extra_warnflags="$extra_warnflags -Wno-maybe-uninitialized"
+    ])
+    # ICC doesn't support -Werror=
+    AS_IF([test $icc_version -gt 0], [
+	particular_werror_flags=no
+    ])
+    for wflag in \
+		 -Werror=deprecated-declarations \
+		 -Werror=division-by-zero \
+		 -Werror=duplicated-cond \
+		 -Werror=implicit-function-declaration \
+		 -Werror=implicit-int \
+		 -Werror=misleading-indentation \
+		 -Werror=pointer-arith \
+		 -Werror=shorten-64-to-32 \
+		 -Werror=write-strings \
+		 -Wimplicit-fallthrough=0 \
+		 -Wmissing-noreturn \
+		 -Wno-cast-function-type \
+		 -Wno-constant-logical-operand \
+		 -Wno-long-long \
+		 -Wno-missing-field-initializers \
+		 -Wno-overlength-strings \
+		 -Wno-packed-bitfield-compat \
+		 -Wno-parentheses-equality \
+		 -Wno-self-assign \
+		 -Wno-tautological-compare \
+		 -Wno-unused-parameter \
+		 -Wno-unused-value \
+		 -Wsuggest-attribute=format \
+		 -Wsuggest-attribute=noreturn \
+		 -Wunused-variable \
+		 -diag-disable=175,188,1684,2259,2312 \
+		 $extra_warnflags \
+		 ; do
+	AS_IF([test "$particular_werror_flags" != yes], [
+	    wflag=`echo x$wflag | sed 's/^x-Werror=/-W/;s/^x//'`
+	])
+	ok=no
+	RUBY_TRY_CFLAGS($wflag, [
+	    RUBY_APPEND_OPTIONS(warnflags, $wflag)
+	    ok=yes
+	])
+	AS_CASE([$ok:$wflag], [no:-Werror=*], [
+	    wflag=`echo x$wflag | sed 's/^x-Werror=/-W/'`
+	    RUBY_TRY_CFLAGS($wflag, [
+		RUBY_APPEND_OPTIONS(warnflags, $wflag)
+		particular_werror_flags=no
+	    ])
+	])
+    done
+    AS_CASE([" $warnflags "],[*" -Wno-missing-field-initializers "*], [wflag="-Wall -Wextra"],
+                             [wflag=-Wall])
+    RUBY_TRY_CFLAGS($wflag, [warnflags="$wflag${warnflags+ $warnflags}"])
+    # Disable warnflags while conftest. -Werror=* flags might make bad OS capability guess.
+    rb_cv_warnflags="$warnflags"
+    warnflags=
+])
+RUBY_TRY_CFLAGS(-Qunused-arguments, [RUBY_APPEND_OPTIONS(rb_cv_wsuppress_flags, -Qunused-arguments)])
+AC_COMPILE_IFELSE([
+    AC_LANG_PROGRAM([
+@%:@if !(defined(__SUNPRO_C)||defined(__SUNPRO_CC))
+@%:@error not sunpro
+@%:@endif],[])], [
+    for e in \
+        E_STATEMENT_NOT_REACHED \
+        E_INIT_SIGN_EXTEND \
+        E_INIT_DOES_NOT_FIT \
+        E_INITIALIZATION_TYPE_MISMATCH
+    do
+        RUBY_TRY_CFLAGS([-erroff=${e}], [
+            RUBY_APPEND_OPTIONS(rb_cv_warnflags, [-erroff=${e}])
+        ])
+    done
+])
+
+AC_ARG_WITH(compress-debug-sections,
+	AS_HELP_STRING([--with-compress-debug-sections=type],
+	    [enable debug section compression]),
+	[compress_debug_sections=$withval], [compress_debug_sections=])
+
+AS_IF([test "$GCC" = yes], [
+    # -D_FORTIFY_SOURCE
+    # When defined _FORTIFY_SOURCE, glibc enables some additional sanity
+    # argument check. The performance drop is very little and Ubuntu enables
+    # _FORTIFY_SOURCE=2 by default. So, let's support it for protecting us from
+    # a mistake of silly C extensions.
+
+    # TODO: check if link succeeds with _FORTIFY_SOURCE=2.
+    AS_CASE(["$target_os"],
+    [mingw*], [
+	fortify_source=no
+    ])
+    AC_ARG_ENABLE(fortify_source,
+		  AS_HELP_STRING([--disable-fortify-source],
+				 [disable -D_FORTIFY_SOURCE=2 option, which causes link error on mingw]),
+		  [fortify_source=$enableval])
+    AS_IF([test "x$fortify_source" != xno], [
+        RUBY_TRY_CFLAGS([$optflags -D_FORTIFY_SOURCE=2], [RUBY_APPEND_OPTION(XCFLAGS, -D_FORTIFY_SOURCE=2)], [],
+                        [@%:@include <stdio.h>])
+    ])
+
+    : ${MJIT_HEADER_FLAGS='-P -dD'}
+
+    # -fstack-protector
+    AS_CASE(["$target_os"],
+    [mingw*|haiku*], [
+	stack_protector=no
+    ])
+    AS_IF([test -z "${stack_protector+set}"], [
+	AS_FOR(option, opt, [-fstack-protector-strong -fstack-protector], [
+	    RUBY_TRY_CFLAGS(option, [stack_protector=yes])
+	    AS_IF([test "x$stack_protector" = xyes], [
+		RUBY_TRY_LDFLAGS(option, [], [stack_protector=])
+	    ])
+	    AS_IF([test "x$stack_protector" = xyes], [stack_protector=option; break])
+	])
+    ])
+    AS_CASE(["$stack_protector"], [-*], [
+	RUBY_APPEND_OPTION(XCFLAGS, $stack_protector)
+	RUBY_APPEND_OPTION(XLDFLAGS, $stack_protector)
+	RUBY_APPEND_OPTION(LDFLAGS, $stack_protector)
+    ])
+
+    AS_CASE("${compress_debug_sections:-zlib}",
+    [none|no], [], [
+    RUBY_TRY_LDFLAGS(${linker_flag}--compress-debug-sections=${compress_debug_sections:-zlib},
+		     [compress_debug_sections=${compress_debug_sections:-zlib}],
+		     [compress_debug_sections=no])
+    ])
+    AS_IF([test "x$compress_debug_sections" != xno], [
+	RUBY_APPEND_OPTION(DLDFLAGS, ${linker_flag}--compress-debug-sections=$compress_debug_sections)
+    ])
+
+    AS_CASE(["$target_os"],[mingw*], [
+      # On  Windows  platforms,   system  provided  headers  are  VC++
+      # optimized.  That  is, C++  habits are often  contaminated into
+      # various  headers.  Most frequent  situation is  the use  of //
+      # comments.   We  bypass  ANSI   C  mode  for  them.   Otherwise
+      # extension libs cannot include those headers.
+
+      # Since math.h in some mingw64 wrongly declares frexp and modf
+      # to be pure, the variables pointed by the second arguments are
+      # considered uninitialized unexpectedly.
+      AC_CACHE_CHECK([whether frexp and modf are broken],
+	rb_cv_mingw64_broken_frexp_modf,
+	[
+	  save_CFLAGS="$CFLAGS"
+	  AS_IF([test "$particular_werror_flags" = "yes"], [
+	    CFLAGS="$CFLAGS -Werror=uninitialized"
+	  ], [
+	    CFLAGS="$CFLAGS -Werror -Wuninitialized"
+	  ])
+	  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>
+	    int foo(double x)
+	    {
+	      int exp;
+	      frexp(x, &exp);
+	      return exp;
+	    }]], [[if (foo(0.0)) return 1;]])],
+	    [rb_cv_mingw64_broken_frexp_modf=no],
+	    [rb_cv_mingw64_broken_frexp_modf=yes])
+	  CFLAGS="$save_CFLAGS"
+	])
+      AS_IF([test "$rb_cv_mingw64_broken_frexp_modf" = yes], [
+	AC_DEFINE(RUBY_MINGW64_BROKEN_FREXP_MODF)
+      ])
+    ],
+    [cygwin*|darwin*|netbsd*], [
+      # need lgamma_r(), finite()
+    ])
+
+    # ANSI (no XCFLAGS because this is C only)
+    AS_CASE(["$target_os"],
+    [solaris*], [
+      # Because "-std=gnu99" affects existence of functions on Solaris,
+      # "-std=gnu99" will be appended to CPPFLAGS.
+	for ansi_options in -std=gnu99; do
+	    RUBY_TRY_CFLAGS(${ansi_options}, [
+		RUBY_APPEND_OPTIONS(CPPFLAGS, ${ansi_options})
+	    ], [ansi_options=])
+	    test "x${ansi_options}" = x || break
+	done
+    ],
+    [
+      # ANSI (no XCFLAGS because this is C only)
+      rb_tmp_std_check=`echo $CC $CFLAGS $optflags $warnflags $debugflags | fgrep std= | tr -d  '\015'`
+      AS_IF([test "x$rb_tmp_std_check" = "x"],
+      [
+	for ansi_options in -std=gnu99; do
+	    RUBY_TRY_CFLAGS(${ansi_options}, [
+		RUBY_APPEND_OPTIONS(warnflags, ${ansi_options})
+		RUBY_APPEND_OPTIONS(strict_warnflags, ${ansi_options})
+	    ], [ansi_options=])
+	    test "x${ansi_options}" = x || break
+	done
+      ])
+    ])
+
+    # suppress annoying -Wstrict-overflow warnings
+    RUBY_TRY_CFLAGS(-fno-strict-overflow, [RUBY_APPEND_OPTION(XCFLAGS, -fno-strict-overflow)])
+
+    test "${debugflags+set}" || {RUBY_TRY_CFLAGS(-ggdb3, [debugflags=-ggdb3])}
+    test "${debugflags+set}" || {RUBY_TRY_CFLAGS(-ggdb, [debugflags=-ggdb])}
+    test "${debugflags+set}" || {RUBY_TRY_CFLAGS(-g3, [debugflags=-g3])}
+])
+test $ac_cv_prog_cc_g = yes && : ${debugflags=-g}
+AS_IF([test "x$RUBY_DEVEL" = xyes], [RUBY_APPEND_OPTION(XCFLAGS, -DRUBY_DEVEL=1)])
+
+AS_IF([test "$GCC" = ""], [
+    AS_CASE(["$target_os"],[aix*],[warnflags="$warnflags -qinfo=por" rb_cv_warnflags="$rb_cv_warnflags -qinfo=por"])
+])
+AS_IF([test "$GCC" = yes], [
+    AS_IF([test "$gcc_major" -ge 4], [
+	RUBY_TRY_CFLAGS(-fvisibility=hidden, [visibility_option=yes], [visibility_option=no])
+    ])
+    AC_SUBST(WERRORFLAG, "-Werror")
+    AS_IF([test "$visibility_option" = yes], [
+	RUBY_APPEND_OPTION(XCFLAGS, -fvisibility=hidden)
+	AC_DEFINE(RUBY_SYMBOL_EXPORT_BEGIN, [_Pragma("GCC visibility push(default)")])
+	AC_DEFINE(RUBY_SYMBOL_EXPORT_END,   [_Pragma("GCC visibility pop")])
+    ], [
+	RUBY_TRY_LDFLAGS([-Wl,-unexported_symbol,_Init_*], [visibility_option=ld], [visibility_option=no])
+    ])
+    test "$visibility_option" = no || OBJCOPY=:
+])
+
+AS_IF([test "$GCC" = yes], [
+    # optflags
+
+    AS_CASE(["$target_os"], [mingw*], [
+	RUBY_TRY_CFLAGS(-fno-omit-frame-pointer, [optflags="${optflags+$optflags }-fno-omit-frame-pointer"])
+	RUBY_TRY_CFLAGS(-static-libgcc, [static_libgcc=yes], [static_libgcc=no])
+	AS_IF([test "$static_libgcc" = yes], [
+	    RUBY_APPEND_OPTION(EXTLDFLAGS, -static-libgcc)
+	])
+    ])
+
+    # disable fast-math
+    for oflag in -fno-fast-math; do
+	RUBY_TRY_CFLAGS($oflag, [RUBY_APPEND_OPTION(CFLAGS, $oflag)])
+    done
+    for oflag in -fexcess-precision=standard -fp-model\ precise; do
+	RUBY_TRY_CFLAGS($oflag, [RUBY_APPEND_OPTION(XCFLAGS, $oflag)])
+    done
+])
+
+AS_CASE(["$target_cpu"], [[i[3-6]86*]], [
+    AC_CACHE_CHECK([for __sync_val_compare_and_swap], [rb_cv_gcc_compiler_cas], [
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[unsigned long atomic_var;]],
+	    [[__sync_val_compare_and_swap(&atomic_var, 0, 1);]])],
+	    [rb_cv_gcc_compiler_cas=yes],
+	    [
+	    save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -march=i486"
+	    AC_LINK_IFELSE([AC_LANG_PROGRAM([[unsigned long atomic_var;]],
+		[[__sync_val_compare_and_swap(&atomic_var, 0, 1);]])],
+		[rb_cv_gcc_compiler_cas=i486],
+		[rb_cv_gcc_compiler_cas=no])
+	    CFLAGS="$save_CFLAGS"
+	    ])
+    ])
+    AS_IF([test "$rb_cv_gcc_compiler_cas" = i486], [ARCH_FLAG="-march=i486"])
+])
+
+AC_ARG_WITH(opt-dir,
+	AS_HELP_STRING([--with-opt-dir=DIR-LIST],
+		       [add optional headers and libraries directories separated by $PATH_SEPARATOR]),
+	[
+		val=`echo "$PATH_SEPARATOR$withval" | sed "s|$PATH_SEPARATOR\([[^$PATH_SEPARATOR]*]\)| -I\1/include|g;s/^ //"`
+		CPPFLAGS="$CPPFLAGS $val"
+		val=`echo "$PATH_SEPARATOR$withval" | sed "s|$PATH_SEPARATOR\([[^$PATH_SEPARATOR]*]\)| -L\1/lib${rpathflag:+ $rpathflag\\\\1/lib}|g;s/^ //"`
+		LDFLAGS="$LDFLAGS $val"
+		LDFLAGS_OPTDIR="$val"
+		OPT_DIR="$withval"
+	], [OPT_DIR=])
+
+test -z "${ac_env_CFLAGS_set}" -a -n "${cflags+set}" && eval CFLAGS="\"$cflags $ARCH_FLAG\""
+test -z "${ac_env_CXXFLAGS_set}" -a -n "${cxxflags+set}" && eval CXXFLAGS="\"$cxxflags $ARCH_FLAG\""
+}
+
+AC_CACHE_CHECK([whether compiler has statement and declarations in expressions],
+  rb_cv_have_stmt_and_decl_in_expr,
+  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[ __extension__ ({ int a = 0; a; }); ]])],
+  [rb_cv_have_stmt_and_decl_in_expr=yes],
+  [rb_cv_have_stmt_and_decl_in_expr=no])])
+AS_IF([test "$rb_cv_have_stmt_and_decl_in_expr" = yes], [
+  AC_DEFINE(HAVE_STMT_AND_DECL_IN_EXPR)
+])
+
+: "header and library section" && {
+AC_ARG_WITH(winnt-ver,
+  AS_HELP_STRING([--with-winnt-ver=0xXXXX], [target Windows NT version (default to 0x0600)]),
+  [with_winnt_ver="$withval"], [with_winnt_ver="0x0600"])
+AS_CASE(["$target_os"],
+[mingw*], [
+  RUBY_APPEND_OPTION(CPPFLAGS, -D_WIN32_WINNT=$with_winnt_ver)
+  RUBY_APPEND_OPTION(CPPFLAGS, -D__MINGW_USE_VC2005_COMPAT)
+])
+
+AS_CASE(["$target_os"],
+[freebsd*], [
+  AC_CACHE_CHECK([whether pthread should be enabled by default],
+    rb_cv_enable_pthread_default,
+    [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
+#include <osreldate.h>
+#if __FreeBSD_version < 502102
+#error pthread should be disabled on this platform
+#endif
+      ]])],
+      rb_cv_enable_pthread_default=yes,
+      rb_cv_enable_pthread_default=no)])
+  enable_pthread=$rb_cv_enable_pthread_default
+  ],
+[mingw*], [
+  enable_pthread=no
+  ],
+[
+  enable_pthread=yes
+  ])
+
+dnl Checks for libraries.
+AS_CASE(["$target_os"],[*bsd*|dragonfly*],[],[ac_cv_func_daemon=no])
+
+AS_UNSET(ORIG_LIBS)
+POSTLINK=:
+AC_SUBST(POSTLINK)
+AS_CASE(["$target_os"],
+[nextstep*], [	],
+[openstep*], [	],
+[rhapsody*], [	],
+[darwin*], [
+		ORIG_LIBS="$LIBS"
+		RUBY_PREPEND_OPTION(LIBS, -lobjc)
+		RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT)
+		AC_CACHE_CHECK([whether syscall(2) is deprecated], rb_cv_syscall_deprecated,
+		    [RUBY_WERROR_FLAG([
+			AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <unistd.h>]],
+							   [[if (syscall(0)) return 1;]])],
+			    [rb_cv_syscall_deprecated=no],
+			    [rb_cv_syscall_deprecated=yes])])])
+		AS_IF([test $rb_cv_syscall_deprecated = yes], [
+		    ac_cv_func___syscall=no
+		    ac_cv_func_syscall=no
+		    ac_cv_header_sys_syscall_h=no
+		    ac_cv_header_syscall_h=no
+		])
+		ac_cv_func_getcontext=no
+		ac_cv_func_setcontext=no
+		incs=`$CC -v -E -xc - < /dev/null 2>&1 | sed ['1,/^@%:@include </d;s/^ *//;s|[^./][^/]*/\.\./||g;/\/include$/!d;s||/lib|;/\/usr\/lib/d']`
+		for d in `$CC -print-search-dirs | sed -e '/^libraries: */!d;s///' | tr : '\012' | fgrep -v /../ | sed -n 's|^\(/.*/lib\)/$|\1|p'`; do
+		    incs=`echo "$incs" | fgrep -v "$d"`
+		done
+		for d in $incs; do
+		    test -d "$d" && RUBY_APPEND_OPTIONS(LDFLAGS, "-L$d")
+		done
+		ac_cv_type_getgroups=gid_t # getgroups() on Rosetta fills garbage
+		ac_cv_lib_crypt_crypt=no
+		ac_cv_func_fdatasync=no # Mac OS X wrongly reports it has fdatasync()
+		ac_cv_func_vfork=no
+		AS_IF([test $gcc_major -lt 4 -o \( $gcc_major -eq 4 -a $gcc_minor -lt 3 \)], [
+		    ac_cv_func___builtin_setjmp=no
+		])
+		with_setjmp_type=sigsetjmp # to hijack SIGCHLD handler
+		AC_CACHE_CHECK(for broken crypt with 8bit chars, rb_cv_broken_crypt,
+		    [AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+
+void
+broken_crypt(const char *salt, const char *buf1, const char *buf2)
+{
+#if 0
+    printf("%.2x%.2x: %s -> %s\n", (unsigned char)salt[0], (unsigned char)salt[1],
+	   buf1+2, buf2+2);
+#endif
+}
+
+int
+main()
+{
+    int i;
+    char salt[2], buf[256], *s;
+    for (i = 0; i < 128*128; i++) {
+	salt[0] = 0x80 | (i & 0x7f);
+	salt[1] = 0x80 | (i >> 7);
+	strcpy(buf, crypt("", salt));
+	if (strcmp(buf, s = crypt("", salt))) {
+	    broken_crypt(salt, buf, s);
+	    return 1;
+	}
+    }
+    salt[0] = salt[1] = ' ';
+    strcpy(buf, crypt("", salt));
+    salt[0] = salt[1] = 0x80 | ' ';
+    if (strcmp(buf, s = crypt("", salt))) {
+	broken_crypt(salt, buf, s);
+	return 1;
+    }
+    return 0;
+}
+]])],
+		    rb_cv_broken_crypt=no,
+		    rb_cv_broken_crypt=yes,
+		    rb_cv_broken_crypt=yes)])
+		AS_IF([test "$rb_cv_broken_crypt" = yes], [
+		   AC_DEFINE(BROKEN_CRYPT, 1)
+		])
+		POSTLINK=""
+		AC_CHECK_PROGS(codesign, codesign)
+		AC_CHECK_PROGS(dsymutil, dsymutil)
+		AS_IF([test -n "$codesign"], [
+		    POSTLINK="{ test -z '\$(RUBY_CODESIGN)' || $codesign -s '\$(RUBY_CODESIGN)' -f \$@; }${POSTLINK:+; $POSTLINK}"
+		])
+		AS_IF([test -n "$dsymutil"], [
+		    POSTLINK="$dsymutil \$@${POSTLINK:+; $POSTLINK}"
+		])
+		AS_IF([test -n "${POSTLINK}"], [
+		    LINK_SO="$LINK_SO
+\$(POSTLINK)"
+		])
+		AC_CHECK_HEADERS(crt_externs.h, [], [], [
+		    #include <crt_externs.h>
+		])
+		],
+[hpux*], [	LIBS="-lm $LIBS"
+		ac_cv_c_inline=no],
+[solaris*], [	LIBS="-lm $LIBS"
+		ac_cv_func_vfork=no
+		AC_MSG_CHECKING(whether _XOPEN_SOURCE is already given)
+		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
+			#ifndef _XOPEN_SOURCE
+			#error _XOPEN_SOURCE is not defined
+			#endif
+			]], [[]])],
+		        [given_xopen_source=yes], [given_xopen_source=no])
+		AC_MSG_RESULT($given_xopen_source)
+		AS_IF([test $given_xopen_source = no], [
+		  AC_MSG_CHECKING(appropriate _XOPEN_SOURCE value to define)
+		  define_xopen_source=""
+		  for tmp_xpg in 7 6 5; do
+		    AS_IF([test x"$define_xopen_source" != x], [
+		      break
+		    ])
+		    RUBY_WERROR_FLAG([AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+			#define _XOPEN_SOURCE ${tmp_xpg}00
+			#include <unistd.h>
+			#ifndef _XPG${tmp_xpg}
+			#error _XPG${tmp_xpg} should be defined by _XOPEN_SOURCE=${tmp_xpg}00
+			#endif
+			]], [[]])],
+			[define_xopen_source=${tmp_xpg}00], [])
+			])
+		  done
+		  AS_IF([test x"$define_xopen_source" = x], [
+		    define_xopen_source=no
+		  ])
+		  AC_MSG_RESULT($define_xopen_source)
+		  AS_IF([test x"$define_xopen_source" != xno], [
+		    RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE=$define_xopen_source)
+		    # _XOPEN_SOURCE should not be defined for C++ on Solaris.
+		    RUBY_APPEND_OPTIONS(CXXFLAGS, -U_XOPEN_SOURCE)
+		  ])
+		])
+		],
+[haiku*], [
+		LIBS="$LIBS" # m lib is include in root
+		],
+[cygwin*], [	ac_cv_header_langinfo_h=yes
+		RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE -D_GNU_SOURCE)
+		AC_CHECK_FUNCS(cygwin_conv_path)
+		AC_LIBOBJ([langinfo])
+		],
+[mingw*], [	LIBS="-lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi $LIBS"
+		ac_cv_header_a_out_h=no
+		ac_cv_header_pwd_h=no
+		ac_cv_header_utime_h=no
+		ac_cv_header_sys_ioctl_h=no
+		ac_cv_header_sys_param_h=no
+		ac_cv_header_sys_resource_h=no
+		ac_cv_header_sys_select_h=no
+		ac_cv_header_sys_time_h=no
+		ac_cv_header_sys_times_h=no
+		ac_cv_header_sys_socket_h=no
+		ac_cv_func_lstat=yes
+		ac_cv_func_times=yes
+		ac_cv_func_waitpid=yes
+		ac_cv_func_fsync=yes
+		ac_cv_func_seekdir=yes
+		ac_cv_func_telldir=yes
+		ac_cv_func_lchown=yes
+		ac_cv_func_link=yes
+		ac_cv_func_readlink=yes
+		ac_cv_func_symlink=yes
+		ac_cv_lib_crypt_crypt=no
+		ac_cv_func_getpgrp_void=no
+		ac_cv_func_memcmp_working=yes
+		ac_cv_lib_dl_dlopen=no
+		rb_cv_binary_elf=no
+		rb_cv_negative_time_t=no
+		ac_cv_func_fcntl=yes
+		ac_cv_func_flock=yes
+		ac_cv_func_gmtime_r=yes
+		rb_cv_large_fd_select=yes
+		ac_cv_type_struct_timeval=yes
+                ac_cv_func_clock_gettime=yes
+                ac_cv_func_clock_getres=yes
+		ac_cv_func_malloc_usable_size=no
+		ac_cv_type_off_t=yes
+		ac_cv_sizeof_off_t=8
+		AS_IF([test "$target_cpu" = x64], [
+		    ac_cv_func___builtin_setjmp=yes
+		    ac_cv_func_round=no
+		    rb_cv_coroutine=yes
+		])
+		ac_cv_func_tgamma=no
+		rb_cv_negative_time_t=yes
+		AC_CHECK_TYPE([NET_LUID], [], [],
+			      [@%:@include <winsock2.h>
+			      @%:@include <iphlpapi.h>])
+		AS_IF([test x"$ac_cv_type_NET_LUID" = xyes], [
+		    AC_DEFINE(HAVE_TYPE_NET_LUID, 1)
+		])
+		AC_CHECK_FUNCS(_gmtime64_s)
+		AC_CHECK_FUNCS(_wfreopen_s)
+		AC_LIBOBJ([langinfo])
+		],
+[bsdi*], [	LIBS="-lm $LIBS"
+		AC_DEFINE(BROKEN_SETREUID, 1)
+		AC_DEFINE(BROKEN_SETREGID, 1)
+                ac_cv_sizeof_rlim_t=8],
+[freebsd*], [	LIBS="-lm $LIBS"
+		ac_cv_func_getpeername=no
+		ac_cv_func_getsockname=no
+		ac_cv_func_shutdown=no
+		ac_cv_func_close=no
+		],
+[netbsd*], [	LIBS="-lm $LIBS"
+		],
+[dragonfly*], [	LIBS="-lm $LIBS"
+		],
+[aix*],[	LIBS="-lm $LIBS"
+		ac_cv_func_round=no
+		ac_cv_func___builtin_setjmp=no
+		],
+[linux*],[	LIBS="-lm $LIBS"
+		# __builtin_longjmp in ppc64* Linux does not restore
+		# the TOC register (r2), which is problematic
+		# when a global exit happens from JITted .so code.
+		AS_CASE(["$target_cpu"], [powerpc64*], [
+			ac_cv_func___builtin_setjmp=no
+		])
+		# With gcc-8's -fcf-protection, MJIT's __builtin_longjmp fails.
+		AS_CASE(["$CC $CFLAGS "], [*" -fcf-protection "*], [cf_protection=yes], [cf_protection=no])
+		AS_IF([test "$cf_protection" = yes], [
+			ac_cv_func___builtin_setjmp=no
+		])
+		],
+[	LIBS="-lm $LIBS"])
+: ${ORIG_LIBS=$LIBS}
+
+AS_IF([test -n "${rb_there_is_in_fact_no_gplusplus_but_autoconf_is_cheating_us}"], [
+    AC_MSG_NOTICE([Test skipped due to lack of a C++ compiler.])
+],
+[test -n "${CXX}"], [
+    RUBY_WERROR_FLAG([
+        AC_MSG_CHECKING([whether CXXFLAGS is valid])
+        AC_LANG_PUSH(C++)
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <cstdio>]], [[]])],
+	    [AC_MSG_RESULT(yes)],[
+            AC_MSG_RESULT(no)
+            # The message mentions CXXFLAGS, but CPPFLAGS might also affects.
+            AC_MSG_WARN([something wrong with CXXFLAGS="$CXXFLAGS"])
+            CXX=false
+        ])
+        AC_LANG_POP(C++)
+    ])
+])
+
+AC_CHECK_LIB(crypt, crypt)      # glibc (GNU/Linux, GNU/Hurd, GNU/kFreeBSD)
+AC_CHECK_LIB(dl, dlopen)	# Dynamic linking for SunOS/Solaris and SYSV
+AC_CHECK_LIB(dld, shl_load)	# Dynamic linking for HP-UX
+AC_CHECK_LIB(socket, shutdown)  # SunOS/Solaris
+
+dnl Checks for header files.
+AC_HEADER_DIRENT
+dnl AC_HEADER_STDC has been checked in AC_USE_SYSTEM_EXTENSIONS
+AC_HEADER_STDBOOL
+AC_HEADER_SYS_WAIT
+
+AC_CHECK_HEADERS(a.out.h)
+AC_CHECK_HEADERS(atomic.h)
+AC_CHECK_HEADERS(copyfile.h)
+AC_CHECK_HEADERS(direct.h)
+AC_CHECK_HEADERS(grp.h)
+AC_CHECK_HEADERS(fcntl.h)
+AC_CHECK_HEADERS(float.h)
+AC_CHECK_HEADERS(ieeefp.h)
+AC_CHECK_HEADERS(intrinsics.h)
+AC_CHECK_HEADERS(langinfo.h)
+AC_CHECK_HEADERS(limits.h)
+AC_CHECK_HEADERS(locale.h)
+AC_CHECK_HEADERS(malloc.h)
+AC_CHECK_HEADERS(malloc/malloc.h)
+AC_CHECK_HEADERS(malloc_np.h)
+AC_CHECK_HEADERS(net/socket.h)
+AC_CHECK_HEADERS(process.h)
+AC_CHECK_HEADERS(pwd.h)
+AC_CHECK_HEADERS(sanitizer/asan_interface.h)
+AC_CHECK_HEADERS(sanitizer/msan_interface.h)
+AC_CHECK_HEADERS(setjmpex.h)
+AC_CHECK_HEADERS(stdalign.h)
+AC_CHECK_HEADERS(sys/attr.h)
+AC_CHECK_HEADERS(sys/eventfd.h)
+AC_CHECK_HEADERS(sys/fcntl.h)
+AC_CHECK_HEADERS(sys/file.h)
+AC_CHECK_HEADERS(sys/id.h)
+AC_CHECK_HEADERS(sys/ioctl.h)
+AC_CHECK_HEADERS(sys/mkdev.h)
+AC_CHECK_HEADERS(sys/param.h)
+AC_CHECK_HEADERS(sys/prctl.h)
+AC_CHECK_HEADERS(sys/resource.h)
+AC_CHECK_HEADERS(sys/select.h)
+AC_CHECK_HEADERS(sys/sendfile.h)
+AC_CHECK_HEADERS(sys/socket.h)
+AC_CHECK_HEADERS(sys/syscall.h)
+AC_CHECK_HEADERS(sys/sysmacros.h)
+AC_CHECK_HEADERS(sys/time.h)
+AC_CHECK_HEADERS(sys/times.h)
+AC_CHECK_HEADERS(sys/uio.h)
+AC_CHECK_HEADERS(sys/utime.h)
+AC_CHECK_HEADERS(syscall.h)
+AC_CHECK_HEADERS(time.h)
+AC_CHECK_HEADERS(ucontext.h)
+AC_CHECK_HEADERS(utime.h)
+AS_CASE("$target_cpu", [x64|x86_64|i[3-6]86*], [
+  AC_CHECK_HEADERS(x86intrin.h)
+])
+
+AC_ARG_WITH([gmp],
+  [AS_HELP_STRING([--without-gmp],
+    [disable GNU GMP to accelerate Bignum operations])],
+  [],
+  [with_gmp=yes])
+AS_IF([test "x$with_gmp" != xno],
+  [AC_CHECK_HEADERS(gmp.h)
+   AS_IF([test "x$ac_cv_header_gmp_h" != xno],
+     AC_SEARCH_LIBS([__gmpz_init], [gmp],
+       [AC_DEFINE(HAVE_LIBGMP, 1)]))])
+
+AC_ARG_WITH([jemalloc],
+  [AS_HELP_STRING([--with-jemalloc],[use jemalloc allocator])],
+  [with_jemalloc=$withval], [with_jemalloc=no])
+AS_IF([test "x$with_jemalloc" != xno],[
+  AC_SEARCH_LIBS([malloc_conf], [jemalloc],
+    [
+      AC_DEFINE(HAVE_LIBJEMALLOC, 1)
+      with_jemalloc=yes
+    ],
+    [test x$with_jemalloc = xyes && with_jemalloc=no])
+  AC_CHECK_HEADER(jemalloc/jemalloc.h, [
+    AC_DEFINE(RUBY_ALTERNATIVE_MALLOC_HEADER, [<jemalloc/jemalloc.h>])
+  ],
+  [test x$with_jemalloc = xyes && with_jemalloc=no])
+  AS_IF([test "x$with_jemalloc" != xyes], [
+    AC_CACHE_CHECK([for jemalloc with JEMALLOC_MANGLE], rb_cv_jemalloc_demangle,
+      [AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@define JEMALLOC_MANGLE 1
+      @%:@ifdef RUBY_ALTERNATIVE_MALLOC_HEADER
+      @%:@include RUBY_ALTERNATIVE_MALLOC_HEADER
+      @%:@else
+      @%:@include <jemalloc.h>
+      @%:@endif], [return !&malloc_conf])],
+      [rb_cv_jemalloc_demangle=yes],
+      [rb_cv_jemalloc_demangle=no])
+    ])
+  ])
+  AS_IF([test "x$rb_cv_jemalloc_demangle" = xyes], [
+    AC_DEFINE(JEMALLOC_MANGLE)
+    with_jemalloc=yes
+  ])
+  AS_CASE(["$with_jemalloc"],
+    [yes],
+    [
+      AC_DEFINE(HAVE_MALLOC_CONF)
+      ac_cv_func_malloc_usable_size=yes
+    ],
+    [no],
+    [AC_MSG_ERROR([jemalloc requested but not found])
+  ])
+])
+
+dnl check for large file stuff
+mv confdefs.h confdefs1.h
+: > confdefs.h
+AC_SYS_LARGEFILE
+# On 32-bit Solaris, it is safe to define _LARGEFILE_SOURCE
+# which is not added by AC_SYS_LARGEFILE.
+AS_IF([test x"$enable_largefile" != xno], [
+  AS_CASE(["$target_os"], [solaris*], [
+    AC_MSG_CHECKING([wheather _LARGEFILE_SOURCE should be defined])
+    AS_CASE(["${ac_cv_sys_file_offset_bits}:${ac_cv_sys_large_files}"],
+      ["64:"|"64:no"|"64:unknown"], [
+	# insert _LARGEFILE_SOURCE before _FILE_OFFSET_BITS line
+	# that is the same order as "getconf LFS_CFLAGS" output
+	mv confdefs.h largefile0.h
+	: > confdefs.h
+	AC_DEFINE(_LARGEFILE_SOURCE)
+	cat largefile0.h >> confdefs.h
+	rm largefile0.h
+	AC_MSG_RESULT([yes])
+      ], [AC_MSG_RESULT([no])])
+  ])
+])
+mv confdefs.h largefile.h
+mv confdefs1.h confdefs.h
+cat largefile.h >> confdefs.h
+
+AS_CASE(["$target_os"],
+    [aix*], [
+    AS_CASE(["$target_cpu:$ac_cv_sys_large_files"],
+	[ppc64:*|powerpc64:*], [],
+	[*:no|*:unknown], [],
+	[
+	    # AIX currently does not support a 32-bit call to posix_fadvise()
+	    # if _LARGE_FILES is defined.
+	    ac_cv_func_posix_fadvise=no
+	])
+    ])
+
+AC_C_BIGENDIAN
+AC_C_CONST
+AC_C_CHAR_UNSIGNED
+AC_C_INLINE
+AC_C_VOLATILE
+AC_C_TYPEOF
+AC_C_RESTRICT
+
+AS_CASE(":$ac_cv_c_const:$ac_cv_c_volatile:",
+    [*:no:*], [AC_MSG_ERROR(ANSI C-conforming const and volatile are mandatory)])
+
+AC_CHECK_TYPES([long long, off_t])
+
+AC_CACHE_CHECK([char bit], [rb_cv_char_bit],
+    [test "$universal_binary" = yes && cross_compiling=yes
+    AC_COMPUTE_INT([rb_cv_char_bit], [CHAR_BIT],
+	[AC_INCLUDES_DEFAULT([@%:@include <limits.h>])], [rb_cv_char_bit=8])
+    test "$universal_binary" = yes && cross_compiling=$real_cross_compiling])
+
+RUBY_CHECK_SIZEOF(int, [], [ILP])
+RUBY_CHECK_SIZEOF(short)
+RUBY_CHECK_SIZEOF(long, [int], [ILP LP])
+RUBY_CHECK_SIZEOF(long long)
+RUBY_CHECK_SIZEOF(__int64, [8], [ILP LP])
+RUBY_CHECK_SIZEOF(__int128, [16], [ILP LP])
+RUBY_CHECK_SIZEOF(off_t)
+RUBY_CHECK_SIZEOF(void*, [int long "long long"], [ILP LP LLP])
+RUBY_CHECK_SIZEOF(float)
+RUBY_CHECK_SIZEOF(double)
+RUBY_CHECK_SIZEOF(time_t, [long "long long"], [], [@%:@include <time.h>])
+RUBY_CHECK_SIZEOF(clock_t, [], [], [@%:@include <time.h>])
+
+AC_CACHE_CHECK(packed struct attribute, rb_cv_packed_struct,
+    [rb_cv_packed_struct=no
+    for mac in \
+	"__pragma(pack(push, 1)) x __pragma(pack(pop))" \
+	"x __attribute__((packed))" \
+	; do
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@define PACKED_STRUCT(x) $mac
+			PACKED_STRUCT(struct { int a; });]], [[]])],
+		[rb_cv_packed_struct=$mac; break])
+    done])
+AS_IF([test "$rb_cv_packed_struct" != no], [
+    AC_DEFINE_UNQUOTED([PACKED_STRUCT(x)], [$rb_cv_packed_struct])
+    RUBY_TRY_CFLAGS(-Wno-address-of-packed-member, [AC_DEFINE(USE_UNALIGNED_MEMBER_ACCESS)])
+], [
+    AC_DEFINE_UNQUOTED([PACKED_STRUCT(x)], x)
+])
+
+AS_IF([test "x$ac_cv_type_long_long" = xyes], [
+    RUBY_CHECK_PRINTF_PREFIX(long long, ll I64, LL)
+], [test "x$ac_cv_type___int64" = xyes], [
+    RUBY_CHECK_PRINTF_PREFIX(__int64, ll I64, LL)
+])
+
+RUBY_REPLACE_TYPE(pid_t, int, PIDT)
+RUBY_REPLACE_TYPE(uid_t, int, UIDT)
+RUBY_REPLACE_TYPE(gid_t, int, GIDT)
+RUBY_REPLACE_TYPE(time_t, [], TIMET, [@%:@include <time.h>])
+RUBY_REPLACE_TYPE(dev_t, [int long "long long"], DEVT)
+RUBY_REPLACE_TYPE(mode_t, ["unsigned short" "unsigned int" long], MODET, [@%:@include <sys/stat.h>])
+RUBY_REPLACE_TYPE(rlim_t, [int long "long long"], RLIM, [
+@%:@ifdef HAVE_SYS_TYPES_H
+@%:@include <sys/types.h>
+@%:@endif
+@%:@ifdef HAVE_SYS_TYPES_H
+@%:@include <sys/time.h>
+@%:@endif
+@%:@include <sys/resource.h>
+])
+RUBY_REPLACE_TYPE(off_t, [], OFFT)
+RUBY_REPLACE_TYPE(clockid_t, [], CLOCKID, [@%:@ifdef HAVE_TIME_H
+@%:@ include <time.h>
+@%:@endif
+@%:@ifdef HAVE_SYS_TIME_H
+@%:@ include <sys/time.h>
+@%:@endif])
+
+# __VA_ARGS__ is also tested in AC_PROG_CC_C99 since autoconf 2.60a (around
+# 2006). The check below is redundant and should always success.  Remain not
+# deleted for backward compat.
+AC_CACHE_CHECK(for variable length macro, rb_cv_va_args_macro,
+  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+int foo(const char*);
+@%:@define FOO(...) foo(@%:@__VA_ARGS__)
+]], [[FOO(1);FOO(1,2);FOO(1,2,3);]])],
+  rb_cv_va_args_macro=yes,
+  rb_cv_va_args_macro=no)])
+AS_IF([test "$rb_cv_va_args_macro" = yes], [
+  AC_DEFINE(HAVE_VA_ARGS_MACRO)
+])
+
+# We want C11's  `_Alignof`.  GCC (and alike) have  `__alignof__`, which behave
+# slightly differently  than the  C11's.  We cannot  use `__alignof__`  for our
+# purpose.   The problem  is, however,  that  old gcc  and old  clang had  both
+# implemented `_Alignof` as  a synonym of `__alignof__`.  They are  not what we
+# want.  We have to check sanity.
+#
+# See also: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023
+# See also: https://bugs.llvm.org/show_bug.cgi?id=26547
+AC_CACHE_CHECK([if _Alignof() works], rb_cv_have__alignof,[
+    rb_cv_have__alignof=no
+    RUBY_WERROR_FLAG([
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+            @%:@ifdef HAVE_STDALIGN_H
+            @%:@include <stdalign.h>
+            @%:@endif
+            @%:@ifdef STDC_HEADERS
+            @%:@include <stddef.h>
+            @%:@endif
+            @%:@ifndef __GNUC__
+            @%:@define __extension__
+            @%:@endif
+        ]], [[
+            typedef struct conftest_tag {
+                char _;
+                double d;
+            } T;
+            static int conftest_ary@<:@
+                offsetof(T, d) == __extension__ _Alignof(double)
+                ? 1 : -1
+            @:>@;
+            return conftest_ary@<:@0@:>@;
+        ]])],[
+            rb_cv_have__alignof=yes
+        ],[])
+    ])
+])
+AS_IF([test "$rb_cv_have__alignof" != no], [
+    AC_DEFINE(HAVE__ALIGNOF)
+])
+
+RUBY_FUNC_ATTRIBUTE(__const__, CONSTFUNC)
+RUBY_FUNC_ATTRIBUTE(__pure__, PUREFUNC)
+RUBY_FUNC_ATTRIBUTE(__noreturn__, NORETURN)
+RUBY_FUNC_ATTRIBUTE(__deprecated__, DEPRECATED)
+RUBY_FUNC_ATTRIBUTE(__deprecated__("by "@%:@n), DEPRECATED_BY(n,x), rb_cv_func_deprecated_by)
+RUBY_FUNC_ATTRIBUTE(__noinline__, NOINLINE)
+RUBY_FUNC_ATTRIBUTE(__always_inline__, ALWAYS_INLINE)
+RUBY_FUNC_ATTRIBUTE(__no_sanitize__(san), NO_SANITIZE(san, x), rb_cv_func_no_sanitize)
+RUBY_FUNC_ATTRIBUTE(__no_sanitize_address__, NO_SANITIZE_ADDRESS)
+RUBY_FUNC_ATTRIBUTE(__no_address_safety_analysis__, NO_ADDRESS_SAFETY_ANALYSIS)
+RUBY_FUNC_ATTRIBUTE(__warn_unused_result__, WARN_UNUSED_RESULT)
+RUBY_FUNC_ATTRIBUTE(__unused__, MAYBE_UNUSED)
+RUBY_FUNC_ATTRIBUTE(__error__ mesg, ERRORFUNC(mesg,x), rb_cv_func___error__)
+RUBY_FUNC_ATTRIBUTE(__warning__ mesg, WARNINGFUNC(mesg,x), rb_cv_func___warning__)
+RUBY_FUNC_ATTRIBUTE(__weak__, WEAK, rb_cv_func_weak)
+AS_IF([test "$rb_cv_func_weak" != x], [
+   AC_DEFINE(HAVE_FUNC_WEAK)
+])
+
+AC_CACHE_CHECK([for __attribute__((__depreacted__(msg))) in C++],
+  rb_cv_CentOS6_CXX_workaround,
+  RUBY_WERROR_FLAG([
+    AC_LANG_PUSH([C++])
+    AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM(
+        [],
+        [__attribute__((__deprecated__("message"))) int conftest(...);])],
+      [rb_cv_CentOS6_CXX_workaround=yes],
+      [rb_cv_CentOS6_CXX_workaround=no])
+    AC_LANG_POP()]))
+AS_IF([test "$rb_cv_CentOS6_CXX_workaround" != no],[
+  AC_DEFINE([RUBY_CXX_DEPRECATED(msg)],
+    [__attribute__((__deprecated__(msg)))])])
+
+AC_CACHE_CHECK([for std::nullptr_t], rb_cv_CXX_nullptr, [
+  AC_LANG_PUSH([C++])
+  AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM(
+      [@%:@include <cstddef>],
+      [static std::nullptr_t const *const conftest = nullptr;])],
+    [rb_cv_CXX_nullptr=yes],
+    [rb_cv_CXX_nullptr=no])
+  AC_LANG_POP()])
+AS_IF([test "$rb_cv_CXX_nullptr" != no],[AC_DEFINE(HAVE_NULLPTR)])
+
+if_i386=${universal_binary+[defined __i386__]}
+RUBY_FUNC_ATTRIBUTE(__stdcall__,  FUNC_STDCALL,  rb_cv_func_stdcall,  ${if_i386})
+RUBY_FUNC_ATTRIBUTE(__cdecl__,    FUNC_CDECL,    rb_cv_func_cdecl,    ${if_i386})
+RUBY_FUNC_ATTRIBUTE(__fastcall__, FUNC_FASTCALL, rb_cv_func_fastcall, ${if_i386})
+RUBY_FUNC_ATTRIBUTE(__optimize__("O0"), FUNC_UNOPTIMIZED, rb_cv_func_unoptimized)
+RUBY_FUNC_ATTRIBUTE(__optimize__("-Os","-fomit-frame-pointer"), FUNC_MINIMIZED, rb_cv_func_minimized)
+
+AS_IF([test "$GCC" = yes], [
+    AC_CACHE_CHECK([for function alias], [rb_cv_gcc_function_alias],
+	[rb_cv_gcc_function_alias=no
+	for a in alias weak,alias; do
+	    AC_LINK_IFELSE([AC_LANG_PROGRAM([[void foo(void) {}
+		void bar(void) __attribute__(($a("foo")));]], [[bar()]])],
+		[rb_cv_gcc_function_alias=$a; break])
+	done])
+    AS_IF([test "$rb_cv_gcc_function_alias" != no], [
+	AC_DEFINE(HAVE_ATTRIBUTE_FUNCTION_ALIAS)
+	AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_TYPE(type, prot, name, args)],
+			   [type prot __attribute__(($rb_cv_gcc_function_alias(@%:@name)));])
+	AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_VOID(prot, name, args)],
+			   [RUBY_ALIAS_FUNCTION_TYPE(void, prot, name, args)])
+    ])
+
+    AC_CACHE_CHECK([for __atomic builtins], [rb_cv_gcc_atomic_builtins], [
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[unsigned int atomic_var;]],
+		    [[
+			__atomic_exchange_n(&atomic_var, 0, __ATOMIC_SEQ_CST);
+			__atomic_exchange_n(&atomic_var, 1, __ATOMIC_SEQ_CST);
+			__atomic_fetch_add(&atomic_var, 1, __ATOMIC_SEQ_CST);
+			__atomic_fetch_sub(&atomic_var, 1, __ATOMIC_SEQ_CST);
+			__atomic_or_fetch(&atomic_var, 1, __ATOMIC_SEQ_CST);
+		    ]])],
+		    [rb_cv_gcc_atomic_builtins=yes],
+		    [rb_cv_gcc_atomic_builtins=no])])
+    AS_IF([test "$rb_cv_gcc_atomic_builtins" = yes], [
+	AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS)
+    ])
+
+    AC_CACHE_CHECK([for __sync builtins], [rb_cv_gcc_sync_builtins], [
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[unsigned int atomic_var;]],
+		    [[
+			__sync_lock_test_and_set(&atomic_var, 0);
+			__sync_lock_test_and_set(&atomic_var, 1);
+			__sync_fetch_and_add(&atomic_var, 1);
+			__sync_fetch_and_sub(&atomic_var, 1);
+			__sync_or_and_fetch(&atomic_var, 1);
+			__sync_val_compare_and_swap(&atomic_var, 0, 1);
+		    ]])],
+		    [rb_cv_gcc_sync_builtins=yes],
+		    [rb_cv_gcc_sync_builtins=no])])
+    AS_IF([test "$rb_cv_gcc_sync_builtins" = yes], [
+	AC_DEFINE(HAVE_GCC_SYNC_BUILTINS)
+    ])
+])
+
+    AC_CACHE_CHECK(for __builtin_unreachable, rb_cv_func___builtin_unreachable,
+    [RUBY_WERROR_FLAG(
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[volatile int zero;]],
+	[[if (zero) __builtin_unreachable();]])],
+	[rb_cv_func___builtin_unreachable=yes],
+	[rb_cv_func___builtin_unreachable=no])
+    ])
+    ])
+    AS_IF([test "$rb_cv_func___builtin_unreachable" = yes], [
+	AC_DEFINE_UNQUOTED(UNREACHABLE, [__builtin_unreachable()])
+    ])
+
+AC_CACHE_CHECK(for exported function attribute, rb_cv_func_exported, [
+rb_cv_func_exported=no
+RUBY_WERROR_FLAG([
+for mac in '__attribute__ ((__visibility__("default")))' '__declspec(dllexport)'; do
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@define RUBY_FUNC_EXPORTED $mac extern
+    RUBY_FUNC_EXPORTED void conftest_attribute_check(void);]], [[]])],
+    [rb_cv_func_exported="$mac"; break])
+done
+])])
+AS_IF([test "$rb_cv_func_exported" != no], [
+    AC_DEFINE_UNQUOTED(RUBY_FUNC_EXPORTED, [$rb_cv_func_exported extern])
+])
+RUBY_DECL_ATTRIBUTE([__nonnull__(n)], [RUBY_FUNC_NONNULL(n,x)], [rb_cv_func_nonnull],
+                    [], [function], [
+@%:@define x int conftest_attribute_check(void *p)
+@%:@define n 1
+])
+
+RUBY_APPEND_OPTION(XCFLAGS, -DRUBY_EXPORT)
+
+AC_ARG_ENABLE(mathn,
+    AS_HELP_STRING([--enable-mathn], [enable canonicalization for mathn]),
+    [AC_MSG_ERROR([mathn support has been dropped])])
+
+AC_CACHE_CHECK(for function name string predefined identifier,
+    rb_cv_function_name_string,
+    [AS_CASE(["$target_os"],[openbsd*],[
+      rb_cv_function_name_string=__func__
+     ],[
+     rb_cv_function_name_string=no
+      RUBY_WERROR_FLAG([
+        for func in __func__ __FUNCTION__; do
+            AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdio.h>]],
+			 		    [[puts($func);]])],
+            [rb_cv_function_name_string=$func
+            break])
+        done
+      ])])]
+)
+AS_IF([test "$rb_cv_function_name_string" != no], [
+    AC_DEFINE_UNQUOTED(RUBY_FUNCTION_NAME_STRING, [$rb_cv_function_name_string])
+])
+
+AC_CACHE_CHECK(if enum over int is allowed, rb_cv_enum_over_int, [
+    rb_cv_enum_over_int=no
+    AS_IF([test "x$ac_cv_type_long_long" = xyes], [
+	type="unsigned long long" max="ULLONG_MAX"
+    ], [
+	type="unsigned long" max="ULONG_MAX"
+    ])
+    RUBY_WERROR_FLAG([
+        AC_COMPILE_IFELSE([
+            AC_LANG_BOOL_COMPILE_TRY([
+                    @%:@include <limits.h>
+                    enum {conftest_max = $max};
+                ], [
+                    (conftest_max == $max) &&
+                    (sizeof(conftest_max) == sizeof($type))
+                ]
+	    )],
+	    [rb_cv_enum_over_int=yes],
+	    [rb_cv_enum_over_int=no]
+	)
+    ])
+])
+AS_IF([test $rb_cv_enum_over_int = yes], [
+    AC_DEFINE(ENUM_OVER_INT, 1)
+])
+
+dnl Check whether we need to define sys_nerr locally
+AC_CHECK_DECLS([sys_nerr], [], [], [$ac_includes_default
+@%:@include <errno.h>])
+
+AC_CHECK_DECLS([getenv])
+
+AS_CASE(["$target_cpu"],
+[alpha*|sh4|sh4el|sh4eb], [AS_CASE(["$target_os"::"$GCC"],
+		[*::yes],  # gcc
+			[CFLAGS="-mieee $CFLAGS"],
+		[osf*],    # ccc
+			[CFLAGS="-ieee $CFLAGS"],
+		)],
+[sparc*], [AC_LIBOBJ([sparc])])
+
+ac_cv_header_net_socket_h=${ac_cv_header_net_socket_h=no}
+AS_IF([test "$ac_cv_header_net_socket_h" = yes], [
+    ac_cv_header_sys_socket_h=${ac_cv_header_sys_socket_h=no}
+], [
+    ac_cv_header_sys_socket_h=${ac_cv_header_sys_socket_h=yes}
+])
+
+
+AC_TYPE_SIZE_T
+RUBY_CHECK_SIGNEDNESS(size_t, [AC_MSG_ERROR(size_t is signed)], [],
+		      [@%:@include <sys/types.h>])
+RUBY_CHECK_SIZEOF(size_t, [int long void*], [], [@%:@include <sys/types.h>])
+RUBY_CHECK_SIZEOF(ptrdiff_t, size_t, [], [@%:@include <stddef.h>])
+RUBY_CHECK_PRINTF_PREFIX(size_t, z)
+RUBY_CHECK_PRINTF_PREFIX(ptrdiff_t, t)
+AC_CHECK_MEMBERS([struct stat.st_blksize])
+AC_CHECK_MEMBERS([struct stat.st_blocks])
+AC_CHECK_MEMBERS([struct stat.st_rdev])
+RUBY_CHECK_SIZEOF([struct stat.st_size], [off_t int long "long long"], [], [@%:@include <sys/stat.h>])
+AS_IF([test "$ac_cv_member_struct_stat_st_blocks" = yes], [
+    RUBY_CHECK_SIZEOF([struct stat.st_blocks], [off_t int long "long long"], [], [@%:@include <sys/stat.h>])
+])
+RUBY_CHECK_SIZEOF([struct stat.st_ino], [long "long long"], [], [@%:@include <sys/stat.h>])
+AC_CHECK_MEMBERS([struct stat.st_atim])
+AC_CHECK_MEMBERS([struct stat.st_atimespec])
+AC_CHECK_MEMBERS([struct stat.st_atimensec])
+AC_CHECK_MEMBERS([struct stat.st_mtim])
+AC_CHECK_MEMBERS([struct stat.st_mtimespec])
+AC_CHECK_MEMBERS([struct stat.st_mtimensec])
+AC_CHECK_MEMBERS([struct stat.st_ctim])
+AC_CHECK_MEMBERS([struct stat.st_ctimespec])
+AC_CHECK_MEMBERS([struct stat.st_ctimensec])
+AC_CHECK_MEMBERS([struct stat.st_birthtimespec])
+AS_IF([test "x$ac_cv_member_struct_stat_st_birthtimespec" != xyes],
+    [AC_CHECK_MEMBERS([struct statx.stx_btime])])
+
+AC_CHECK_TYPES([struct timeval], [], [], [@%:@ifdef HAVE_TIME_H
+@%:@include <time.h>
+@%:@endif
+@%:@ifdef HAVE_SYS_TIME_H
+@%:@include <sys/time.h>
+@%:@endif])
+
+AS_IF([test "${ac_cv_type_struct_timeval}" = yes], [
+    RUBY_CHECK_SIZEOF([struct timeval.tv_sec], [time_t long "long long"], [],
+		      [@%:@ifdef HAVE_TIME_H
+@%:@include <time.h>
+@%:@endif
+@%:@ifdef HAVE_SYS_TIME_H
+@%:@include <sys/time.h>
+@%:@endif])
+    AS_CASE(${ac_cv_sizeof_struct_timeval_tv_sec},
+	    [SIZEOF_INT], [t=int],
+	    [SIZEOF_LONG], [t=long],
+	    [SIZEOF_LONG_LONG], [t=LONG_LONG],
+	    [t=])
+    AS_IF([test "${t}" != ""], [
+	AC_DEFINE_UNQUOTED(TYPEOF_TIMEVAL_TV_SEC, [$t])
+    ])
+])
+
+AC_CHECK_TYPES([struct timespec], [], [], [@%:@ifdef HAVE_TIME_H
+@%:@include <time.h>
+@%:@endif
+@%:@ifdef HAVE_SYS_TIME_H
+@%:@include <sys/time.h>
+@%:@endif])
+
+AC_CHECK_TYPES([struct timezone], [], [], [@%:@ifdef HAVE_TIME_H
+@%:@ include <time.h>
+@%:@endif
+@%:@ifdef HAVE_SYS_TIME_H
+@%:@ include <sys/time.h>
+@%:@endif])
+
+AC_CACHE_VAL([rb_cv_large_fd_select],
+    [AC_CHECK_TYPE(fd_mask, [rb_cv_large_fd_select=yes], [rb_cv_large_fd_select=no], [AC_INCLUDES_DEFAULT([])
+@%:@ifdef HAVE_SYS_SELECT_H
+@%:@ include <sys/select.h>
+@%:@endif])])
+AS_IF([test "$rb_cv_large_fd_select" = yes], [
+    AC_DEFINE(HAVE_RB_FD_INIT, 1)
+])
+
+RUBY_DEFINT(int8_t, 1)
+RUBY_DEFINT(uint8_t, 1, unsigned)
+RUBY_DEFINT(int16_t, 2)
+RUBY_DEFINT(uint16_t, 2, unsigned)
+RUBY_DEFINT(int32_t, 4)
+RUBY_DEFINT(uint32_t, 4, unsigned)
+RUBY_DEFINT(int64_t, 8)
+RUBY_DEFINT(uint64_t, 8, unsigned)
+RUBY_DEFINT(int128_t, 16)
+RUBY_DEFINT(uint128_t, 16, unsigned)
+RUBY_DEFINT(intptr_t, void*)
+RUBY_DEFINT(uintptr_t, void*, unsigned)
+AS_IF([test "x$rb_cv_type_intptr_t" != xno], [
+    RUBY_CHECK_PRINTF_PREFIX(intptr_t, '' ll I64 l, PTR)
+])
+RUBY_DEFINT(ssize_t, size_t, [], [@%:@include <sys/types.h>])	dnl may differ from int, so not use AC_TYPE_SSIZE_T.
+AS_IF([test "x$rb_cv_type_int64_t" != xno], [
+    RUBY_CHECK_PRINTF_PREFIX(int64_t, ll I64 l, 64)
+])
+
+AC_CACHE_CHECK(for stack end address, rb_cv_stack_end_address,
+[rb_cv_stack_end_address=no
+  AC_LINK_IFELSE([AC_LANG_PROGRAM(
+      [[extern void *__libc_stack_end;]],
+      [[if (!__libc_stack_end) return 1;]])],
+    [rb_cv_stack_end_address="__libc_stack_end"])
+])
+AS_IF([test $rb_cv_stack_end_address != no], [
+  AC_DEFINE_UNQUOTED(STACK_END_ADDRESS, $rb_cv_stack_end_address)
+])
+
+dnl Checks for library functions.
+AC_TYPE_GETGROUPS
+AS_CASE(["${target_cpu}-${target_os}:${target_archs}"],
+[powerpc-darwin*], [
+  AC_LIBSOURCES(alloca.c)
+  AC_SUBST([ALLOCA], [\${LIBOBJDIR}alloca.${ac_objext}])
+  AC_DEFINE(C_ALLOCA)
+  AC_DEFINE_UNQUOTED(alloca, alloca)
+  ],
+[universal-darwin*:*ppc*], [
+  AC_LIBSOURCES(alloca.c)
+  AC_SUBST([ALLOCA], [\${LIBOBJDIR}alloca.${ac_objext}])
+  RUBY_DEFINE_IF([defined __powerpc__], C_ALLOCA, 1)
+  RUBY_DEFINE_IF([defined __powerpc__], alloca, alloca)
+  ],
+[
+  AC_FUNC_ALLOCA
+  ])
+AS_IF([test "x$ALLOCA" = "x"], [
+    AC_CACHE_CHECK([for dynamic size alloca], rb_cv_dynamic_alloca, [
+    for chk in ok __chkstk; do
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+	    @%:@ifdef HAVE_ALLOCA_H
+	    @%:@include <alloca.h>
+	    @%:@endif
+	    void $chk() {}
+	    int dynamic_alloca_test;
+	    int dynamic_alloca_result;]],
+	    [[dynamic_alloca_result = alloca(dynamic_alloca_test) != 0;]])],
+	    [rb_cv_dynamic_alloca=$chk; break])
+    done])
+    AS_IF([test "x$rb_cv_dynamic_alloca" = "x__chkstk"], [
+	AC_DEFINE_UNQUOTED(RUBY_ALLOCA_CHKSTK, _$rb_cv_dynamic_alloca)
+	AS_CASE("$target_cpu",
+	[x64|x86_64], [
+	    AC_SUBST([ALLOCA], [\${LIBOBJDIR}x86_64-chkstk.${ac_objext}])
+	],)
+    ])
+])
+AC_FUNC_MEMCMP
+
+AS_CASE(["$target_os"],[freebsd*],[
+	 AC_DEFINE(BROKEN_CLOSE)
+	 AC_REPLACE_FUNCS(close)
+	 ])
+
+AC_REPLACE_FUNCS(acosh)
+AC_REPLACE_FUNCS(cbrt)
+AC_REPLACE_FUNCS(crypt)
+AC_REPLACE_FUNCS(dup2)
+AC_REPLACE_FUNCS(erf)
+AC_REPLACE_FUNCS(explicit_bzero)
+AC_REPLACE_FUNCS(ffs)
+AC_REPLACE_FUNCS(flock)
+AC_REPLACE_FUNCS(hypot)
+AC_REPLACE_FUNCS(lgamma_r)
+AC_REPLACE_FUNCS(memmove)
+AC_REPLACE_FUNCS(nan)
+AC_REPLACE_FUNCS(nextafter)
+AC_REPLACE_FUNCS(setproctitle)
+AC_REPLACE_FUNCS(strchr)
+AC_REPLACE_FUNCS(strerror)
+AC_REPLACE_FUNCS(strlcat)
+AC_REPLACE_FUNCS(strlcpy)
+AC_REPLACE_FUNCS(strstr)
+AC_REPLACE_FUNCS(tgamma)
+
+RUBY_REPLACE_FUNC([finite], [@%:@include <math.h>])
+RUBY_REPLACE_FUNC([isinf], [@%:@include <math.h>])
+RUBY_REPLACE_FUNC([isnan], [@%:@include <math.h>])
+
+# for missing/setproctitle.c
+AS_CASE(["$target_os"],
+[aix* | k*bsd*-gnu | kopensolaris*-gnu | linux* | darwin*], [AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)],
+[hpux*], [AC_DEFINE(SPT_TYPE,SPT_PSTAT) ],
+[])
+AC_CHECK_HEADERS(sys/pstat.h)
+
+
+AC_CACHE_CHECK(for signbit, rb_cv_have_signbit,
+  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <math.h>
+]], [[int v = signbit(-0.0);]])],
+	rb_cv_have_signbit=yes,
+	rb_cv_have_signbit=no)])
+AS_IF([test "$rb_cv_have_signbit" = yes], [
+  AC_DEFINE(HAVE_SIGNBIT)
+], [
+  AC_LIBOBJ([signbit])
+])
+
+AC_FUNC_FORK
+
+AC_CHECK_FUNCS(__syscall)
+AC_CHECK_FUNCS(_longjmp)		# used for AC_ARG_WITH(setjmp-type)
+# we don't use _setjmp if _longjmp doesn't exist.
+test x$ac_cv_func__longjmp = xno && ac_cv_func__setjmp=no
+AC_CHECK_FUNCS(arc4random_buf)
+AC_CHECK_FUNCS(atan2l atan2f)
+AC_CHECK_FUNCS(chroot)
+AC_CHECK_FUNCS(chsize)
+AC_CHECK_FUNCS(clock_gettime)
+AC_CHECK_FUNCS(copy_file_range)
+AC_CHECK_FUNCS(cosh)
+AC_CHECK_FUNCS(crypt_r)
+AC_CHECK_FUNCS(daemon)
+AC_CHECK_FUNCS(dirfd)
+AC_CHECK_FUNCS(dl_iterate_phdr)
+AC_CHECK_FUNCS(dlopen)
+AC_CHECK_FUNCS(dladdr)
+AC_CHECK_FUNCS(dup)
+AC_CHECK_FUNCS(dup3)
+AC_CHECK_FUNCS(eaccess)
+AC_CHECK_FUNCS(endgrent)
+AC_CHECK_FUNCS(eventfd)
+AC_CHECK_FUNCS(explicit_memset)
+AC_CHECK_FUNCS(fcopyfile)
+AC_CHECK_FUNCS(fchmod)
+AC_CHECK_FUNCS(fchown)
+AC_CHECK_FUNCS(fcntl)
+AC_CHECK_FUNCS(fdatasync)
+AC_CHECK_FUNCS(fdopendir)
+AC_CHECK_FUNCS(fgetattrlist)
+AC_CHECK_FUNCS(fmod)
+AC_CHECK_FUNCS(fstatat)
+AC_CHECK_FUNCS(fsync)
+AC_CHECK_FUNCS(ftruncate)
+AC_CHECK_FUNCS(ftruncate64)		# used for Win32 platform
+AC_CHECK_FUNCS(getattrlist)
+AC_CHECK_FUNCS(getcwd)
+AC_CHECK_FUNCS(getgidx)
+AC_CHECK_FUNCS(getgrnam)
+AC_CHECK_FUNCS(getgrnam_r)
+AC_CHECK_FUNCS(getgroups)
+AC_CHECK_FUNCS(getlogin)
+AC_CHECK_FUNCS(getlogin_r)
+AC_CHECK_FUNCS(getpgid)
+AC_CHECK_FUNCS(getpgrp)
+AC_CHECK_FUNCS(getpriority)
+AC_CHECK_FUNCS(getpwnam)
+AC_CHECK_FUNCS(getpwnam_r)
+AC_CHECK_FUNCS(getpwuid)
+AC_CHECK_FUNCS(getpwuid_r)
+AC_CHECK_FUNCS(getrandom)
+AC_CHECK_FUNCS(getresgid)
+AC_CHECK_FUNCS(getresuid)
+AC_CHECK_FUNCS(getrlimit)
+AC_CHECK_FUNCS(getsid)
+AC_CHECK_FUNCS(gettimeofday)		# for making ac_cv_func_gettimeofday
+AC_CHECK_FUNCS(getuidx)
+AC_CHECK_FUNCS(gmtime_r)
+AC_CHECK_FUNCS(grantpt)
+AC_CHECK_FUNCS(initgroups)
+AC_CHECK_FUNCS(ioctl)
+AC_CHECK_FUNCS(isfinite)
+AC_CHECK_FUNCS(issetugid)
+AC_CHECK_FUNCS(killpg)
+AC_CHECK_FUNCS(lchmod)
+AC_CHECK_FUNCS(lchown)
+AC_CHECK_FUNCS(link)
+AC_CHECK_FUNCS(llabs)
+AC_CHECK_FUNCS(lockf)
+AC_CHECK_FUNCS(log2)
+AC_CHECK_FUNCS(lstat)
+AC_CHECK_FUNCS(lutimes)
+AC_CHECK_FUNCS(malloc_usable_size)
+AC_CHECK_FUNCS(malloc_size)
+AC_CHECK_FUNCS(mblen)
+AC_CHECK_FUNCS(memalign)
+AC_CHECK_FUNCS(memset_s)
+AC_CHECK_FUNCS(writev)
+AC_CHECK_FUNCS(memrchr)
+AC_CHECK_FUNCS(memmem)
+AC_CHECK_FUNCS(mkfifo)
+AC_CHECK_FUNCS(mknod)
+AC_CHECK_FUNCS(mktime)
+AC_CHECK_FUNCS(openat)
+AC_CHECK_FUNCS(pipe2)
+AC_CHECK_FUNCS(poll)
+AC_CHECK_FUNCS(posix_fadvise)
+AC_CHECK_FUNCS(posix_memalign)
+AC_CHECK_FUNCS(ppoll)
+AC_CHECK_FUNCS(pread)
+AC_CHECK_FUNCS(pwrite)
+AC_CHECK_FUNCS(qsort_r)
+AC_CHECK_FUNCS(qsort_s)
+AC_CHECK_FUNCS(readlink)
+AC_CHECK_FUNCS(realpath)
+AC_CHECK_FUNCS(round)
+AC_CHECK_FUNCS(sched_getaffinity)
+AC_CHECK_FUNCS(seekdir)
+AC_CHECK_FUNCS(select_large_fdset)
+AC_CHECK_FUNCS(sendfile)
+AC_CHECK_FUNCS(setegid)
+AC_CHECK_FUNCS(setenv)
+AC_CHECK_FUNCS(seteuid)
+AC_CHECK_FUNCS(setgid)
+AC_CHECK_FUNCS(setgroups)
+AC_CHECK_FUNCS(setpgid)
+AC_CHECK_FUNCS(setpgrp)
+AC_CHECK_FUNCS(setregid)
+AC_CHECK_FUNCS(setresgid)
+AC_CHECK_FUNCS(setresuid)
+AC_CHECK_FUNCS(setreuid)
+AC_CHECK_FUNCS(setrgid)
+AC_CHECK_FUNCS(setrlimit)
+AC_CHECK_FUNCS(setruid)
+AC_CHECK_FUNCS(setsid)
+AC_CHECK_FUNCS(setuid)
+AC_CHECK_FUNCS(shutdown)
+AC_CHECK_FUNCS(sigaction)
+AC_CHECK_FUNCS(sigaltstack)
+AC_CHECK_FUNCS(sigprocmask)
+AC_CHECK_FUNCS(sinh)
+AC_CHECK_FUNCS(spawnv)
+AC_CHECK_FUNCS(symlink)
+AC_CHECK_FUNCS(syscall)
+AC_CHECK_FUNCS(sysconf)
+AC_CHECK_FUNCS(tanh)
+AC_CHECK_FUNCS(telldir)
+AC_CHECK_FUNCS(timegm)
+AC_CHECK_FUNCS(times)
+AC_CHECK_FUNCS(truncate)
+AC_CHECK_FUNCS(truncate64)		# used for Win32
+AC_CHECK_FUNCS(unsetenv)
+AC_CHECK_FUNCS(utimensat)
+AC_CHECK_FUNCS(utimes)
+AC_CHECK_FUNCS(wait4)
+AC_CHECK_FUNCS(waitpid)
+AC_CHECK_FUNCS(__cospi)
+AC_CHECK_FUNCS(__sinpi)
+
+AS_IF([test "x$ac_cv_member_struct_statx_stx_btime" = xyes],
+    [AC_CHECK_FUNCS(statx)])
+
+AS_CASE(["$ac_cv_func_memset_s:$ac_cv_func_qsort_s"], [*yes*],
+    [RUBY_DEFINE_IF([!defined __STDC_WANT_LIB_EXT1__], [__STDC_WANT_LIB_EXT1__], 1)])
+
+AS_IF([test "$ac_cv_func_getcwd" = yes], [
+    AC_CACHE_CHECK(if getcwd allocates buffer if NULL is given, [rb_cv_getcwd_malloc],
+	[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+@%:@include <stddef.h>
+@%:@include <stdio.h>
+@%:@ifdef HAVE_UNISTD_H
+@%:@include <unistd.h>
+@%:@endif
+@%:@ifndef EXIT_SUCCESS
+@%:@define EXIT_SUCCESS 0
+@%:@endif
+@%:@ifndef EXIT_FAILURE
+@%:@define EXIT_FAILURE 1
+@%:@endif
+
+int
+main(int argc, char **argv)
+{
+    if (!getcwd(NULL, 0)) return EXIT_FAILURE;
+    return EXIT_SUCCESS;
+}
+]])],
+	    rb_cv_getcwd_malloc=yes,
+	    rb_cv_getcwd_malloc=no,
+	    AS_CASE($target_os,
+		[linux*|darwin*|*bsd|cygwin*|mingw*|mswin*],
+		[rb_cv_getcwd_malloc=yes],
+		[rb_cv_getcwd_malloc=no]))])
+    AS_IF([test "$rb_cv_getcwd_malloc" = no], [AC_DEFINE(NO_GETCWD_MALLOC, 1)])
+])
+
+AS_IF([test "$ac_cv_func_crypt_r" = yes],
+    [AC_CHECK_HEADERS(crypt.h)])
+AS_IF([test "$ac_cv_func_crypt_r:$ac_cv_header_crypt_h" = yes:yes],
+    [AC_CHECK_MEMBERS([struct crypt_data.initialized], [], [],
+		      [AC_INCLUDES_DEFAULT([@%:@include <crypt.h>])])])
+
+RUBY_CHECK_BUILTIN_FUNC(__builtin_alloca_with_align, [__builtin_alloca_with_align(1, 4096)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_assume_aligned, [__builtin_assume_aligned((void*)32, 32)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap16, [__builtin_bswap16(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap32, [__builtin_bswap32(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap64, [__builtin_bswap64(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_popcount, [__builtin_popcount(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_popcountll, [__builtin_popcountll(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_clz, [__builtin_clz(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_clzl, [__builtin_clzl(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_clzll, [__builtin_clzll(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_ctz, [__builtin_ctz(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_ctzll, [__builtin_ctzll(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_add_overflow, [int x;__builtin_add_overflow(0,0,&x)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_sub_overflow, [int x;__builtin_sub_overflow(0,0,&x)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_mul_overflow, [int x;__builtin_mul_overflow(0,0,&x)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_mul_overflow_p, [__builtin_mul_overflow_p(0,0,(int)0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_constant_p, [__builtin_constant_p(0)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_choose_expr, [
+    [int x[__extension__(__builtin_choose_expr(1, 1, -1))]];
+    [int y[__extension__(__builtin_choose_expr(0, -1, 1))]];
+    ])
+AS_IF([test x$rb_cv_builtin___builtin_choose_expr = xyes], [
+    RUBY_CHECK_BUILTIN_FUNC(__builtin_choose_expr_constant_p, [
+    [int x[__extension__(__builtin_choose_expr(__builtin_constant_p(1), 1, -1))]];
+    [int y[__extension__(__builtin_choose_expr(__builtin_constant_p(foo), -1, 1))]];
+    ])
+])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_types_compatible_p, [__builtin_types_compatible_p(int, int)])
+RUBY_CHECK_BUILTIN_FUNC(__builtin_trap, [__builtin_trap()])
+
+AS_IF([test "$ac_cv_func_qsort_r" != no], [
+  AC_CACHE_CHECK(whether qsort_r is GNU version, rb_cv_gnu_qsort_r,
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+@%:@include <stdlib.h>
+void (qsort_r)(void *base, size_t nmemb, size_t size,
+	    int (*compar)(const void *, const void *, void *),
+	    void *arg);
+]], [[ ]])],
+      [rb_cv_gnu_qsort_r=yes],
+      [rb_cv_gnu_qsort_r=no])
+  ])
+  AC_CACHE_CHECK(whether qsort_r is BSD version, rb_cv_bsd_qsort_r,
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+@%:@include <stdlib.h>
+void (qsort_r)(void *base, size_t nmemb, size_t size,
+	     void *arg, int (*compar)(void *, const void *, const void *));
+]], [[ ]])],
+      [rb_cv_bsd_qsort_r=yes],
+      [rb_cv_bsd_qsort_r=no])
+  ])
+  AS_CASE("$rb_cv_gnu_qsort_r:$rb_cv_bsd_qsort_r",
+  [yes:no], [
+    AC_DEFINE(HAVE_GNU_QSORT_R, 1)
+  ],
+  [no:yes], [
+    AC_DEFINE(HAVE_BSD_QSORT_R, 1)
+  ])
+])
+
+AC_CACHE_CHECK(whether atan2 handles Inf as C99, rb_cv_atan2_inf_c99, [
+    AS_IF([test $ac_cv_func_atan2f:$ac_cv_func_atan2l = yes:yes], [
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[
+@%:@include <math.h>
+@%:@ifdef HAVE_UNISTD_H
+@%:@include <unistd.h>
+@%:@endif
+@%:@ifndef EXIT_SUCCESS
+@%:@define EXIT_SUCCESS 0
+@%:@endif
+@%:@ifndef EXIT_FAILURE
+@%:@define EXIT_FAILURE 1
+@%:@endif
+
+int
+main(int argc, char **argv)
+{
+    if (fabs(atan2(INFINITY, INFINITY) - M_PI_4) <= 0.01) return EXIT_SUCCESS;
+    return EXIT_FAILURE;
+}
+]])],
+	[rb_cv_atan2_inf_c99=yes],
+	[rb_cv_atan2_inf_c99=no],
+	[AS_CASE($target_os, [mingw*|mswin*], [rb_cv_atan2_inf_c99=no], [rb_cv_atan2_inf_c99=yes])]
+	)
+    ], [rb_cv_atan2_inf_c99=no])
+])
+AS_IF([test "x$rb_cv_atan2_inf_c99" = xyes], [AC_DEFINE(ATAN2_INF_C99)])
+
+# Some platform need -lrt for clock_gettime, but the other don't.
+AS_IF([test x"$ac_cv_func_clock_gettime" != xyes], [
+    # glibc 2.17 moves clock_* functions from librt to the main C library.
+    # http://sourceware.org/ml/libc-announce/2012/msg00001.html
+    AC_CHECK_LIB(rt, clock_gettime)
+    AS_IF([test x"$ac_cv_lib_rt_clock_gettime" = xyes], [
+	AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
+    ])
+])
+AC_CHECK_FUNCS(clock_getres) # clock_getres should be tested after clock_gettime test including librt test.
+AC_CHECK_LIB([rt], [timer_create])
+AC_CHECK_LIB([rt], [timer_settime])
+AS_IF([test x"$ac_cv_lib_rt_timer_create" = xyes], [
+    AC_DEFINE(HAVE_TIMER_CREATE, 1)
+])
+AS_IF([test x"$ac_cv_lib_rt_timer_settime" = xyes], [
+    AC_DEFINE(HAVE_TIMER_SETTIME, 1)
+])
+
+AC_CACHE_CHECK(for unsetenv returns a value, rb_cv_unsetenv_return_value,
+  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#include <stdlib.h>
+]], [[int v = unsetenv("foo");]])],
+	rb_cv_unsetenv_return_value=yes,
+	rb_cv_unsetenv_return_value=no)])
+AS_IF([test "$rb_cv_unsetenv_return_value" = no], [
+  AC_DEFINE(VOID_UNSETENV)
+])
+
+# End of setjmp check.
+
+AC_ARG_ENABLE(setreuid,
+       AS_HELP_STRING([--enable-setreuid], [use setreuid()/setregid() according to need even if obsolete]),
+       [use_setreuid=$enableval])
+AS_IF([test "$use_setreuid" = yes], [
+    AC_DEFINE(USE_SETREUID)
+    AC_DEFINE(USE_SETREGID)
+])
+AC_STRUCT_TIMEZONE
+AC_CACHE_CHECK(for struct tm.tm_gmtoff, rb_cv_member_struct_tm_tm_gmtoff,
+  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+@%:@define _BSD_SOURCE
+@%:@define _DEFAULT_SOURCE
+@%:@include <time.h>
+    ]],
+    [[struct tm t; t.tm_gmtoff = 3600;]])],
+  [rb_cv_member_struct_tm_tm_gmtoff=yes],
+  [rb_cv_member_struct_tm_tm_gmtoff=no])])
+AS_IF([test "$rb_cv_member_struct_tm_tm_gmtoff" = yes], [
+  AC_DEFINE(HAVE_STRUCT_TM_TM_GMTOFF)
+])
+AC_CACHE_CHECK(for external int daylight, rb_cv_have_daylight,
+  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <time.h>
+  int i;]],
+	[[i = daylight;]])],
+	rb_cv_have_daylight=yes,
+	rb_cv_have_daylight=no)])
+AS_IF([test "$rb_cv_have_daylight" = yes], [
+  AC_DEFINE(HAVE_DAYLIGHT)
+])
+
+AC_CACHE_CHECK(for negative time_t for gmtime(3), rb_cv_negative_time_t,
+  [AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdlib.h>
+#include <time.h>
+
+void
+check(tm, y, m, d, h, s)
+    struct tm *tm;
+    int y, m, d, h, s;
+{
+    if (!tm ||
+	tm->tm_year != y ||
+	tm->tm_mon  != m-1 ||
+	tm->tm_mday != d ||
+	tm->tm_hour != h ||
+	tm->tm_sec  != s) {
+	exit(1);
+    }
+}
+
+int
+main()
+{
+   time_t t = -1;
+   struct tm *tm;
+
+   check(gmtime(&t), 69, 12, 31, 23, 59);
+   t = ~(time_t)0 << 31;
+   check(gmtime(&t), 1, 12, 13, 20, 52);
+   return 0;
+}
+]])],
+	rb_cv_negative_time_t=yes,
+	rb_cv_negative_time_t=no,
+	rb_cv_negative_time_t=yes)])
+AS_IF([test "$rb_cv_negative_time_t" = yes], [
+  AC_DEFINE(NEGATIVE_TIME_T)
+])
+
+# [ruby-dev:40910] overflow of time on FreeBSD
+# http://www.freebsd.org/cgi/query-pr.cgi?pr=145341
+AC_CACHE_CHECK(for localtime(3) overflow correctly, rb_cv_localtime_overflow,
+  [AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdlib.h>
+#include <time.h>
+
+void
+check(time_t t1)
+{
+    struct tm *tm;
+    time_t t2;
+    tm = localtime(&t1);
+    if (!tm)
+	return; /* overflow detected.  ok. */
+    t2 = mktime(tm);
+    if (t1 == t2)
+        return; /* round-trip.  ok. */
+    exit(1);
+}
+
+int
+main()
+{
+    time_t t;
+    if (~(time_t)0 <= 0) {
+        t = (((time_t)1) << (sizeof(time_t) * 8 - 2));
+        t |= t - 1;
+    }
+    else {
+        t = ~(time_t)0;
+    }
+    check(t);
+    return 0;
+}
+]])],
+	rb_cv_localtime_overflow=yes,
+	rb_cv_localtime_overflow=no,
+	rb_cv_localtime_overflow=no)])
+AS_IF([test "$rb_cv_localtime_overflow" = no], [
+  AC_DEFINE(LOCALTIME_OVERFLOW_PROBLEM)
+])
+
+AS_IF([test "$ac_cv_func_sigprocmask" = yes && test "$ac_cv_func_sigaction" = yes], [
+   AC_DEFINE(POSIX_SIGNAL)
+], [
+  AC_CHECK_FUNCS(sigsetmask)
+  AC_CACHE_CHECK(for BSD signal semantics, rb_cv_bsd_signal,
+    [AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <signal.h>
+
+void
+sig_handler(dummy)
+     int dummy;
+{
+}
+
+int
+main()
+{
+  signal(SIGINT, sig_handler);
+  kill(getpid(), SIGINT);
+  kill(getpid(), SIGINT);
+  return 0;
+}
+]])],
+	rb_cv_bsd_signal=yes,
+	rb_cv_bsd_signal=no,
+	rb_cv_bsd_signal=$ac_cv_func_sigsetmask)])
+  AS_IF([test "$rb_cv_bsd_signal" = yes], [
+    AC_DEFINE(BSD_SIGNAL)
+  ])
+])
+
+AC_CHECK_TYPES([sig_t],[],[],[@%:@include <signal.h>])
+
+AS_IF([test "$ac_cv_func_getpgid" = no], [
+  # AC_FUNC_GETPGRP fails when cross-compiling with old autoconf.
+  # autoconf is changed between 2.52d and 2.52f?
+  # http://lists.gnu.org/archive/html/bug-gnu-utils/2001-09/msg00181.html
+  # "autoconf cleanup for AC_FUNC_GETPGRP and GETPGRP_VOID"
+AC_FUNC_GETPGRP
+])
+AS_IF([test "$ac_cv_func_setpgid:$ac_cv_func_setpgrp" = no:yes], [
+  # AC_FUNC_SETPGRP fails when cross-compiling.  (until autoconf 2.69?)
+  # https://lists.gnu.org/archive/html/bug-autoconf/2013-02/msg00002.html
+  # "AC_FUNC_SETPGRP fails to work properly when cross-compiling"
+AC_FUNC_SETPGRP
+])
+
+AS_IF([test x"$ac_cv_func_dirfd" = xno], [
+  AS_CASE(["$target_os"],[solaris*],
+          [AC_CHECK_MEMBERS([DIR.d_fd, DIR.dd_fd],,,[
+#include <sys/types.h>
+#include <dirent.h>
+])])
+])
+
+AC_CACHE_CHECK(whether right shift preserve sign bit, rb_cv_rshift_sign,
+    [AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([], [(-1==(-1>>1))])],
+	rb_cv_rshift_sign=yes,
+	rb_cv_rshift_sign=no)])
+AS_IF([test "$rb_cv_rshift_sign" = yes], [
+  AC_DEFINE(RSHIFT(x,y), ((x)>>(int)(y)))
+], [
+  AC_DEFINE(RSHIFT(x,y), (((x)<0) ? ~((~(x))>>(int)(y)) : (x)>>(int)(y)))
+])
+
+AS_IF([test "$ac_cv_func_copy_file_range" = no], [
+  AC_CACHE_CHECK([for copy_file_range],
+    rb_cv_use_copy_file_range,
+    [AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#ifndef O_TMPFILE
+  #define O_TMPFILE __O_TMPFILE
+#endif
+
+int
+main()
+{
+#ifdef __NR_copy_file_range
+   int ret, fd_in, fd_out;
+   fd_in = open("/tmp", O_TMPFILE|O_RDWR, S_IRUSR);
+   fd_out = open("/tmp", O_TMPFILE|O_WRONLY, S_IWUSR);
+   ret = syscall(__NR_copy_file_range, fd_in, NULL, fd_out, NULL, 0, 0);
+   close(fd_in);
+   close(fd_out);
+   if (ret == -1) { return 1; }
+   return 0;
+#else
+   return 1;
+#endif
+}
+  ]])],
+    [rb_cv_use_copy_file_range=yes],
+    [rb_cv_use_copy_file_range=no],
+    [rb_cv_use_copy_file_range=no])])
+])
+AS_CASE(["$ac_cv_func_copy_file_range:$rb_cv_use_copy_file_range"], [*yes*], [
+  AC_DEFINE(USE_COPY_FILE_RANGE)
+])
+
+AS_CASE(["$ac_cv_func_gettimeofday:$ac_cv_func_clock_gettime"],
+[*yes*], [],
+[
+    AC_MSG_ERROR(clock_gettime() or gettimeofday() must exist)
+])
+
+AS_IF([test "$ac_cv_func_sysconf" = yes], [
+  RUBY_CHECK_SYSCONF(CLK_TCK)
+])
+
+AS_IF([test "${universal_binary-no}" = yes ], [
+    archflagpat=`eval echo '"'"${ARCH_FLAG}"'"' | sed 's/[[][|.*]]/\\&/g'`
+    save_CFLAGS="$CFLAGS" new_cflags=`echo "$CFLAGS" | sed "s|$archflagpat"'||'`
+    save_LDFLAGS="$LDFLAGS" new_ldflags=`echo "$LDFLAGS" | sed "s|$archflagpat"'||'`
+    stack_dir=
+    for archs in ${universal_archnames}; do
+	archs=`echo $archs | sed 's/=.*//'`
+	CFLAGS="$new_cflags -arch $archs"
+	LDFLAGS="$new_ldflags -arch $archs"
+	RUBY_STACK_GROW_DIRECTION($archs, dir)
+	AS_IF([test x$stack_dir = x], [
+	    stack_dir=$dir
+	], [test x$stack_dir != x$dir], [
+	    stack_dir=no
+	])
+    done
+    CFLAGS="$save_CFLAGS" LDFLAGS="$save_LDFLAGS"
+    AS_IF([test x$stack_dir = xno], [
+	for archs in ${universal_archnames}; do
+	    archs=`echo $archs | sed 's/=.*//'`
+	    eval dir=\$[rb_cv_stack_grow_dir_]AS_TR_SH([$archs])
+	    RUBY_DEFINE_IF([defined __${archs}__], STACK_GROW_DIRECTION, $dir)
+	done
+    ], [
+	AC_DEFINE_UNQUOTED(STACK_GROW_DIRECTION, $stack_dir)
+    ])
+], [
+    RUBY_STACK_GROW_DIRECTION($target_cpu, dir)
+    AC_DEFINE_UNQUOTED(STACK_GROW_DIRECTION, $dir)
+])
+
+AC_ARG_WITH(coroutine,
+    AS_HELP_STRING([--with-coroutine=IMPLEMENTATION], [specify the coroutine implementation to use]),
+    [rb_cv_coroutine=$withval])
+AS_CASE([$rb_cv_coroutine], [yes|''], [
+    AC_MSG_CHECKING(native coroutine implementation for ${target_cpu}-${target_os})
+    rb_cv_coroutine=
+    AS_CASE(["$target_cpu-$target_os"],
+        [x*64-darwin*], [
+            rb_cv_coroutine=amd64
+        ],
+        [arm64-darwin*], [
+            rb_cv_coroutine=arm64
+        ],
+        [x*64-linux*], [
+            AS_CASE(["$ac_cv_sizeof_voidp"],
+                [8], [ rb_cv_coroutine=amd64 ],
+                [4], [ rb_cv_coroutine=x86 ],
+                dnl unknown pointer size, bail out as no Context.h soon.
+            )
+        ],
+        [*86-linux*], [
+            rb_cv_coroutine=x86
+        ],
+        [x64-mingw32], [
+            rb_cv_coroutine=win64
+        ],
+        [*86-mingw32], [
+            rb_cv_coroutine=win32
+        ],
+        [arm*-linux*], [
+            rb_cv_coroutine=arm32
+        ],
+        [aarch64-linux*], [
+            rb_cv_coroutine=arm64
+        ],
+        [powerpc64le-linux*], [
+            rb_cv_coroutine=ppc64le
+        ],
+        [x86_64-openbsd*], [
+            rb_cv_coroutine=amd64
+        ],
+        [i386-openbsd*], [
+            rb_cv_coroutine=x86
+        ],
+        [*-openbsd*], [
+            rb_cv_coroutine=copy
+        ],
+        [*-haiku*], [
+            rb_cv_coroutine=copy
+        ],
+        [
+            rb_cv_coroutine=ucontext
+        ]
+    )
+    AC_MSG_RESULT(${rb_cv_coroutine})
+])
+COROUTINE_H=coroutine/$rb_cv_coroutine/Context.h
+AS_IF([test ! -f "$srcdir/$COROUTINE_H"],
+      [AC_MSG_ERROR('$rb_cv_coroutine' is not supported as coroutine)])
+AS_CASE([$rb_cv_coroutine],
+    [copy|ucontext], [
+        COROUTINE_SRC=coroutine/$rb_cv_coroutine/Context.c
+    ],
+    [
+        COROUTINE_SRC=coroutine/$rb_cv_coroutine/Context.'$(ASMEXT)'
+    ]
+)
+AC_DEFINE_UNQUOTED(COROUTINE_H, ["$COROUTINE_H"])
+AC_SUBST(X_COROUTINE_H, [$COROUTINE_H])
+AC_SUBST(X_COROUTINE_SRC, [$COROUTINE_SRC])
+
+AS_IF([test x"$enable_pthread" = xyes], [
+    for pthread_lib in thr pthread pthreads c c_r root; do
+	AC_CHECK_LIB($pthread_lib, pthread_create,
+		     rb_with_pthread=yes, rb_with_pthread=no)
+	AS_IF([test "$rb_with_pthread" = "yes"], [break])
+    done
+    AS_IF([test x"$rb_with_pthread" = xyes], [
+	AC_DEFINE(_REENTRANT)
+	AC_DEFINE(_THREAD_SAFE)
+	AC_DEFINE(HAVE_LIBPTHREAD)
+	AC_CHECK_HEADERS(pthread_np.h, [], [], [@%:@include <pthread.h>])
+	AS_CASE(["$pthread_lib:$target_os"],
+		[c:*], [],
+		[root:*], [],
+		[c_r:*|*:openbsd*|*:mirbsd*],  [LIBS="-pthread $LIBS"],
+		[LIBS="-l$pthread_lib $LIBS"])
+    ], [
+	AC_MSG_WARN("Don't know how to find pthread library on your system -- thread support disabled")
+    ])
+    AC_CACHE_CHECK([whether pthread_t is scalar type], [rb_cv_scalar_pthread_t], [
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+	    @%:@include <pthread.h>
+	    ]], [[
+	    pthread_t thread_id;
+	    thread_id = 0;
+	    if (!thread_id) return 0;
+	    ]])],[rb_cv_scalar_pthread_t=yes],[rb_cv_scalar_pthread_t=no])
+    ])
+    AS_IF([test x"$rb_cv_scalar_pthread_t" = xyes], [
+	: # RUBY_CHECK_SIZEOF(pthread_t, [void* int long], [], [@%:@include <pthread.h>])
+    ], [
+	AC_DEFINE(NON_SCALAR_THREAD_ID)
+    ])
+    AC_CHECK_FUNCS(sched_yield pthread_attr_setinheritsched \
+	pthread_attr_get_np pthread_attr_getstack pthread_attr_getguardsize \
+	pthread_get_stackaddr_np pthread_get_stacksize_np \
+	thr_stksegment pthread_stackseg_np pthread_getthrds_np \
+	pthread_condattr_setclock \
+	pthread_sigmask pthread_setname_np pthread_set_name_np)
+    AS_CASE(["$target_os"],[aix*],[ac_cv_func_pthread_getattr_np=no],[AC_CHECK_FUNCS(pthread_getattr_np)])
+    set_current_thread_name=
+    AS_IF([test "$ac_cv_func_pthread_setname_np" = yes], [
+	AC_CACHE_CHECK([arguments of pthread_setname_np], [rb_cv_func_pthread_setname_np_arguments],
+	    [rb_cv_func_pthread_setname_np_arguments=
+	    # Linux,AIX,  (pthread_self(), name)
+	    # NetBSD (pthread_self(), \"%s\", name)
+	    # Darwin (name)
+	    for mac in \
+		"(pthread_self(), name)" \
+		"(pthread_self(), \"%s\", name)" \
+		"(name)" \
+		; do
+		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+		    @%:@include <pthread.h>
+		    @%:@ifdef HAVE_PTHREAD_NP_H
+		    @%:@include <pthread_np.h>
+		    @%:@endif
+		    @%:@define SET_THREAD_NAME(name) pthread_setname_np${mac}
+		    ]],
+		    [[if (SET_THREAD_NAME("conftest")) return 1;]])],
+		    [rb_cv_func_pthread_setname_np_arguments="${mac}"
+		    break])
+	    done
+	    ]
+	)
+	AS_IF([test -n "${rb_cv_func_pthread_setname_np_arguments}"], [
+	    set_current_thread_name="pthread_setname_np${rb_cv_func_pthread_setname_np_arguments}"
+	])
+    ], [test "$ac_cv_func_pthread_set_name_np" = yes], [
+	set_current_thread_name="pthread_set_name_np(pthread_self(), name)"
+    ])
+    AS_IF([test -n "$set_current_thread_name"], [
+	AC_DEFINE_UNQUOTED(SET_CURRENT_THREAD_NAME(name), $set_current_thread_name)
+	AS_CASE([$set_current_thread_name],
+	    [*'pthread_self()'*], [
+		set_another_thread_name=`echo "$set_current_thread_name" | sed 's/pthread_self()/thid/'`
+		AC_DEFINE_UNQUOTED(SET_ANOTHER_THREAD_NAME(thid,name), $set_another_thread_name)
+	    ])
+    ])
+])
+
+AS_IF([test x"$ac_cv_header_ucontext_h" = xno], [
+    AC_CACHE_CHECK([if signal.h defines ucontext_t], [rb_cv_ucontext_in_signal_h],
+	[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <signal.h>]],
+					    [[size_t size = sizeof(ucontext_t);]])],
+	[rb_cv_ucontext_in_signal_h=yes], [rb_cv_ucontext_in_signal_h=no])])
+    AS_IF([test x"$rb_cv_ucontext_in_signal_h" = xyes], [
+	    AC_DEFINE_UNQUOTED(UCONTEXT_IN_SIGNAL_H, 1)
+    ])
+])
+AS_IF([test x"$ac_cv_header_ucontext_h" = xyes -o x"$rb_cv_ucontext_in_signal_h" = xyes], [
+    AC_CACHE_CHECK([if mcontext_t is a pointer], [rb_cv_mcontext_t_ptr],
+	[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+	    @%:@include <signal.h>
+	    @%:@ifdef HAVE_UCONTEXT_H
+	    @%:@include <ucontext.h>
+	    @%:@endif
+        mcontext_t test(mcontext_t mc) {return mc+1;}
+	  ]],
+	  [[test(0);]])],
+	[rb_cv_mcontext_t_ptr=yes], [rb_cv_mcontext_t_ptr=no])])
+    AS_IF([test x"$rb_cv_mcontext_t_ptr" = xyes], [
+	AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t mc = (uc)->uc_mcontext)
+    ], [
+	AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t *mc = &(uc)->uc_mcontext)
+    ])
+    AS_IF([test x"$rb_with_pthread" = xyes], [
+	AC_CHECK_FUNCS(getcontext setcontext)
+    ])
+])
+
+AS_IF([test "$ac_cv_func_fork_works" = "yes" -a "$rb_with_pthread" = "yes"], [
+    AC_CACHE_CHECK([if fork works with pthread], rb_cv_fork_with_pthread,
+	[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#endif
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+
+void *
+thread_func(void *dmy)
+{
+    return dmy;
+}
+
+int
+use_threads(void)
+{
+    pthread_t tid;
+    if (pthread_create(&tid, 0, thread_func, 0) != 0) {
+	return -1;
+    }
+    if (pthread_join(tid, 0) != 0) {
+	return -1;
+    }
+    return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+    pid_t pid;
+    if (use_threads()) return EXIT_FAILURE;
+    pid = fork();
+
+    if (pid) {
+	int loc;
+	sleep(1);
+	if (waitpid(pid, &loc, WNOHANG) == 0) {
+	    kill(pid, SIGKILL);
+	    return EXIT_FAILURE;
+	}
+        if (!WIFEXITED(loc) || WEXITSTATUS(loc) != EXIT_SUCCESS)
+           return EXIT_FAILURE;
+    }
+    else {
+	if (use_threads()) return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}]])],
+	rb_cv_fork_with_pthread=yes,
+	rb_cv_fork_with_pthread=no,
+	rb_cv_fork_with_pthread=yes)])
+    test x$rb_cv_fork_with_pthread = xyes || AC_DEFINE(CANNOT_FORK_WITH_PTHREAD)
+])
+}
+
+: "runtime section" && {
+dnl wheather use dln_a_out or not
+AC_ARG_WITH(dln-a-out,
+	AS_HELP_STRING([--with-dln-a-out], [use dln_a_out if possible]),
+	[
+	AS_CASE([$withval],
+	[yes], [
+	    AS_IF([test "$enable_shared" = yes], [
+		AC_MSG_ERROR(dln_a_out can not make shared library)
+	    ])
+	    with_dln_a_out=yes],
+	[
+	    with_dln_a_out=no])], [with_dln_a_out=no])
+
+AC_CACHE_CHECK(whether ELF binaries are produced, rb_cv_binary_elf,
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[
+AS_CASE(["`head -1 conftest$EXEEXT | tr -dc '\177ELF' | tr '\177' .`"],
+[.ELF*], [rb_cv_binary_elf=yes], [rb_cv_binary_elf=no])],
+rb_cv_binary_elf=no)])
+
+AS_IF([test "$rb_cv_binary_elf" = yes], [
+  AC_DEFINE(USE_ELF)
+  AS_IF([test "$with_dln_a_out" = yes], [
+    AC_MSG_ERROR(dln_a_out does not work with ELF)
+  ])
+  AC_CHECK_HEADERS([elf.h elf_abi.h])
+  AS_IF([test $ac_cv_header_elf_h = yes -o $ac_cv_header_elf_abi_h = yes], [
+    AC_LIBOBJ([addr2line])
+    AC_CHECK_LIB([z], [uncompress])
+  ])
+])
+
+AC_CHECK_HEADERS([mach-o/loader.h])
+AS_IF([test "$ac_cv_header_mach_o_loader_h" = yes], [
+  AC_LIBOBJ([addr2line])
+])
+
+AS_CASE(["$target_os"],
+[linux* | gnu* | k*bsd*-gnu | bsdi* | kopensolaris*-gnu], [
+    AS_IF([test "$rb_cv_binary_elf" = no], [
+	with_dln_a_out=yes
+    ], [
+	LDFLAGS="$LDFLAGS -rdynamic"
+    ])])
+LIBEXT=a
+
+AC_ARG_WITH(mjit-tabs,
+    AS_HELP_STRING([--without-mjit-tabs], [expand tabs in mjit header]),
+    [AS_IF([test $withval = no], [MJIT_TABS=false])])
+AC_SUBST(MJIT_TABS)dnl
+AC_SUBST(DLDFLAGS)dnl
+AC_SUBST(ARCH_FLAG)dnl
+AC_SUBST(MJIT_HEADER_FLAGS)dnl
+AC_SUBST(MJIT_HEADER_INSTALL_DIR)dnl
+AC_SUBST(MJIT_CC)dnl
+AS_IF([test "$GCC" = "yes"], [
+    AS_CASE(["$target_os"],[aix*],[mjit_std_cflag="-std=gnu99"])
+])
+AC_SUBST(MJIT_CFLAGS, [${MJIT_CFLAGS-"-w ${mjit_std_cflag} ${orig_cflags}"}])dnl
+AC_SUBST(MJIT_OPTFLAGS, [${MJIT_OPTFLAGS-'$(optflags)'}])dnl
+AC_SUBST(MJIT_DEBUGFLAGS, [${MJIT_DEBUGFLAGS-'$(debugflags)'}])dnl
+AC_SUBST(MJIT_LDSHARED)dnl
+
+AC_SUBST(STATIC)dnl
+AC_SUBST(CCDLFLAGS)dnl
+AC_SUBST(LDSHARED)dnl
+AC_SUBST(LDSHAREDXX)dnl
+AC_SUBST(DLEXT)dnl
+AC_SUBST(DLEXT2)dnl
+AC_SUBST(LIBEXT)dnl
+AC_SUBST(ASMEXT, S)dnl
+
+STATIC=
+
+AS_IF([test "$with_dln_a_out" != yes], [
+  rb_cv_dlopen=unknown
+  AC_MSG_CHECKING(whether OS depend dynamic link works)
+  AS_IF([test "$GCC" = yes], [
+    AS_CASE(["$target_os"],
+    [darwin*], [
+      # The -fno-common is needed if we wish to embed the Ruby interpreter
+      # into a plugin module of some project (as opposed to embedding it
+      # within the project's application).  The -I/usr/local/include is
+      # needed because CPP as discovered by configure (cc -E -traditional)
+      # fails to consult /usr/local/include by default.  This causes
+      # mkmf.rb's have_header() to fail if the desired resource happens to be
+      # installed in the /usr/local tree.
+      RUBY_APPEND_OPTION(CCDLFLAGS, -fno-common)],
+    [bsdi*|cygwin*|mingw*|aix*|interix*], [ ],
+    [
+      RUBY_APPEND_OPTION(CCDLFLAGS, -fPIC)])
+  ], [
+    AS_CASE(["$target_os"],
+	[hpux*],          [CCDLFLAGS="$CCDLFLAGS +Z"],
+	[solaris*|irix*], [CCDLFLAGS="$CCDLFLAGS -KPIC"],
+	[sunos*],         [CCDLFLAGS="$CCDLFLAGS -PIC"],
+	[esix*|uxpds*],   [CCDLFLAGS="$CCDLFLAGS -KPIC"],
+	                  [: ${CCDLFLAGS=""}])
+  ])
+
+
+  AC_ARG_ENABLE(rpath,
+       AS_HELP_STRING([--enable-rpath], [embed run path into extension libraries.
+       enabled by default on ELF platforms]),
+       [enable_rpath=$enableval], [enable_rpath="$rb_cv_binary_elf"])
+
+  AS_CASE(["$target_os"],
+	[hpux*], [	DLDFLAGS="$DLDFLAGS -E"
+			: ${LDSHARED='$(LD) -b'}
+			XLDFLAGS="$XLDFLAGS -Wl,-E"
+			: ${LIBPATHENV=SHLIB_PATH}
+			rb_cv_dlopen=yes],
+	[solaris*], [	AS_IF([test "$GCC" = yes], [
+			    : ${LDSHARED='$(CC) -shared'}
+			    AS_IF([test "$rb_cv_prog_gnu_ld" = yes], [
+				LDFLAGS="$LDFLAGS -Wl,-E"
+			    ])
+			], [
+			    : ${LDSHARED='$(CC) -G'}
+			])
+			AS_IF([test "$ac_cv_sizeof_voidp" = 8], [
+			    : ${LIBPATHENV=LD_LIBRARY_PATH_64}
+			    : ${PRELOADENV=LD_PRELOAD_64}
+			], [
+			    : ${LIBPATHENV=LD_LIBRARY_PATH_32}
+			    : ${PRELOADENV=LD_PRELOAD_32}
+			])
+			rb_cv_dlopen=yes],
+	[sunos*], [	: ${LDSHARED='$(LD) -assert nodefinitions'}
+			rb_cv_dlopen=yes],
+	[irix*], [	: ${LDSHARED='$(LD) -shared'}
+			rb_cv_dlopen=yes],
+	[sysv4*], [	: ${LDSHARED='$(LD) -G'}
+			rb_cv_dlopen=yes],
+	[nto-qnx*], [	: ${LDSHARED='$(CC) -shared'}
+			rb_cv_dlopen=yes],
+	[esix*|uxpds*], [ : ${LDSHARED='$(LD) -G'}
+			rb_cv_dlopen=yes],
+	[osf*], [	: ${LDSHARED='$(LD) -shared -expect_unresolved "*"'}
+			rb_cv_dlopen=yes],
+	[bsdi3*], [	AS_CASE(["$CC"],
+			[*shlicc*], [	: ${LDSHARED='$(CC) -r'}
+					rb_cv_dlopen=yes])],
+	[linux* | gnu* | k*bsd*-gnu | netbsd* | bsdi* | kopensolaris*-gnu | haiku*], [
+			: ${LDSHARED='$(CC) -shared'}
+			AS_IF([test "$rb_cv_binary_elf" = yes], [
+			    LDFLAGS="$LDFLAGS -Wl,-export-dynamic"
+			])
+			rb_cv_dlopen=yes],
+	[interix*], [	: ${LDSHARED='$(CC) -shared'}
+			XLDFLAGS="$XLDFLAGS -Wl,-E"
+			LIBPATHFLAG=" -L%1\$-s"
+			rb_cv_dlopen=yes],
+	[freebsd*|dragonfly*], [
+			: ${LDSHARED='$(CC) -shared'}
+			AS_IF([test "$rb_cv_binary_elf" = yes], [
+			    LDFLAGS="$LDFLAGS -rdynamic"
+			    DLDFLAGS="$DLDFLAGS "'-Wl,-soname,$@'
+			], [
+			  test "$GCC" = yes && test "$rb_cv_prog_gnu_ld" = yes || LDSHARED='$(LD) -Bshareable'
+			])
+			rb_cv_dlopen=yes],
+	[openbsd*|mirbsd*], [	: ${LDSHARED='$(CC) -shared ${CCDLFLAGS}'}
+			AS_IF([test "$rb_cv_binary_elf" = yes], [
+			    LDFLAGS="$LDFLAGS -Wl,-E"
+			])
+			rb_cv_dlopen=yes],
+	[darwin*], [	: ${LDSHARED='$(CC) -dynamic -bundle'}
+			: ${DLDSHARED='$(CC) -dynamiclib'}
+			: ${LDFLAGS=""}
+			: ${LIBPATHENV=DYLD_FALLBACK_LIBRARY_PATH}
+			: ${PRELOADENV=DYLD_INSERT_LIBRARIES}
+			rb_cv_dlopen=yes],
+        [aix*], [	: ${LDSHARED='$(CC)'}
+			AS_IF([test "$GCC" = yes], [
+			    LDSHARED="$LDSHARED ${linker_flag}-G -shared"
+			], [
+			    LDSHARED="$LDSHARED ${linker_flag}-G"
+			])
+			EXTDLDFLAGS='-e$(TARGET_ENTRY)'
+			XLDFLAGS="${linker_flag}"'-bE:$(ARCHFILE)'" ${linker_flag}-brtl"
+			XLDFLAGS="$XLDFLAGS ${linker_flag}-blibpath:${prefix}/lib:${LIBPATH:-/usr/lib:/lib}"
+			: ${ARCHFILE="ruby.imp"}
+                        TRY_LINK='$(CC) -oconftest $(INCFLAGS) -I$(hdrdir) $(CPPFLAGS)'
+                        TRY_LINK="$TRY_LINK"' $(CFLAGS) $(src) $(LIBPATH) $(LDFLAGS) $(LOCAL_LIBS) $(LIBS)'
+			: ${LIBPATHENV=LIBPATH}
+			: ${PRELOADENV=LDR_PRELOAD}
+			rb_cv_dlopen=yes],
+	[nto-qnx*], [	DLDFLAGS="$DLDFLAGS -L/lib -L/usr/lib -L/usr/local/lib"
+			: ${LDSHARED='$(LD) -Bshareable -x'}
+			LDFLAGS="$LDFLAGS -L/lib -L/usr/lib -L/usr/local/lib"
+			rb_cv_dlopen=yes],
+	[cygwin*|mingw*], [
+			: ${LDSHARED='$(CC) -shared'}
+			XLDFLAGS="$XLDFLAGS -Wl,--stack,0x00200000,--enable-auto-import"
+			DLDFLAGS="${DLDFLAGS} -Wl,--enable-auto-image-base,--enable-auto-import"
+			: ${LIBPATHENV=PATH}
+			: ${PRELOADENV=""}
+			rb_cv_dlopen=yes],
+	[hiuxmpp], [	: ${LDSHARED='$(LD) -r'}],
+	[atheos*], [	: ${LDSHARED='$(CC) -shared'}
+			rb_cv_dlopen=yes],
+	[	: ${LDSHARED='$(LD)'}])
+  AC_MSG_RESULT($rb_cv_dlopen)
+
+  AS_IF([test "$rb_cv_dlopen" = yes], [
+    AS_CASE(["$target_os"],
+      [darwin*], [
+	for flag in \
+	  "-undefined dynamic_lookup" \
+	  "-multiply_defined suppress" \
+	  ; do
+	  test "x${linker_flag}" = x || flag="${linker_flag}`echo ${flag} | tr ' ' ,`"
+	  RUBY_TRY_LDFLAGS([$flag], [], [flag=])
+	  AS_IF([test "x$flag" != x], [
+	    RUBY_APPEND_OPTIONS(DLDFLAGS, [$flag])
+	  ])
+	done
+      ])
+  ])
+
+  AS_IF([test "$enable_rpath:${RPATHFLAG}" = yes:], [
+      AS_IF([test "x$rpathflag" != x], [
+	  RPATHFLAG=" ${rpathflag}%1\$-s"
+      ])
+  ])
+])
+AS_IF([test "${LDSHAREDXX}" = ""], [
+    AS_CASE(["${LDSHARED}"],
+	[*'$(CC)'*], [
+	    LDSHAREDXX=`echo "${LDSHARED}" | sed 's/\$(CC)/$(CXX)/'`
+	    ],
+	[*'${CC}'*], [
+	    LDSHAREDXX=`echo "${LDSHARED}" | sed 's/\${CC}/${CXX}/'`
+	    ],
+	[*$CC*], [
+	    LDSHAREDXX=`echo "${LDSHARED}" | sed "s|$CC|$CXX|"`
+	    ],
+	[ld" "*], [
+	    ])
+])
+AS_CASE([${RPATHFLAG}],[*'%1$'*],[: ${LIBPATHFLAG=' -L%1$-s'}],[: ${LIBPATHFLAG=' -L%s'}])
+
+AC_SUBST(LINK_SO)
+AC_SUBST(LIBPATHFLAG)
+AC_SUBST(RPATHFLAG)
+AC_SUBST(LIBPATHENV, "${LIBPATHENV-LD_LIBRARY_PATH}")
+AC_SUBST(PRELOADENV, "${PRELOADENV-LD_PRELOAD}")
+AC_SUBST(TRY_LINK)
+
+AS_IF([test "x$OPT_DIR" != x], [
+    pat=`echo "${LDFLAGS_OPTDIR}" | sed ['s/[][\\.*|]/\\\\&/']`
+    LDFLAGS=`echo "${LDFLAGS}" | sed "s| ${pat}||"`
+    val=`IFS="$PATH_SEPARATOR"
+        for dir in $OPT_DIR; do
+            echo x ${LIBPATHFLAG} ${RPATHFLAG} |
+            sed "s/^x *//;s${IFS}"'%1\\$-s'"${IFS}${dir}/lib${IFS}g;s${IFS}%s${IFS}${dir}/lib${IFS}g"
+        done | tr '\012' ' ' | sed 's/ *$//'`
+    AS_IF([test x"$val" != x], [
+	test x"${LDFLAGS}" = x || LDFLAGS="$LDFLAGS "
+	LDFLAGS="$LDFLAGS$val"
+	test x"${DLDFLAGS}" = x || DLDFLAGS="$DLDFLAGS "
+	DLDFLAGS="$DLDFLAGS$val"
+    ])
+    LDFLAGS_OPTDIR="$val"
+])
+
+AS_CASE(["$target_os"],
+[freebsd*], [
+    AC_CHECK_LIB([procstat], [procstat_open_sysctl])
+    AS_IF([test "x$ac_cv_lib_procstat_procstat_open_sysctl" = xyes], [
+	AC_CHECK_FUNCS(procstat_getvmmap)
+    ])
+    ])
+AS_CASE(["$target_cpu-$target_os"],
+[*-darwin*], [
+    AC_CHECK_HEADERS([libproc.h])
+    AC_CHECK_HEADERS([execinfo.h])
+    AS_IF([test "x$ac_cv_header_execinfo_h" = xyes], [
+	AC_CHECK_LIB([execinfo], [backtrace])
+	AC_CHECK_HEADERS([libunwind.h])
+    ])],
+[*-freebsd*|x86_64-netbsd*], [
+    AC_CHECK_HEADERS([execinfo.h])
+    AS_IF([test "x$ac_cv_header_execinfo_h" = xyes], [
+	AC_CHECK_LIB([execinfo], [backtrace])
+	AC_CHECK_LIB([unwind], [unw_backtrace])
+    ])])
+AC_CHECK_FUNCS(backtrace)
+
+AS_IF([test "x$ac_cv_func_backtrace" = xyes], [
+  AC_CACHE_CHECK(for broken backtrace, rb_cv_broken_backtrace,
+    [AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <signal.h>
+#include <execinfo.h>
+
+]`grep '^@%:@ *define  *RUBY_SIGALTSTACK_SIZE' ${srcdir}/signal.c`[
+#define TRACE_SIZE 256
+
+void sigsegv(int signum, siginfo_t *info, void *ctx){
+    void *trace[TRACE_SIZE];
+    int n = backtrace(trace, TRACE_SIZE);
+    if (n > 0) {
+	/*fprintf(stdout, "backtrace:%d\n",n);*/
+    } else {
+	_exit(EXIT_FAILURE);
+    }
+    _exit(EXIT_SUCCESS);
+}
+int
+main(void)
+{
+    volatile int *a = NULL;
+    stack_t ss;
+    struct sigaction sa;
+
+    ss.ss_sp = malloc(RUBY_SIGALTSTACK_SIZE);
+    if (ss.ss_sp == NULL) {
+	fprintf(stderr, "cannot allocate memory for sigaltstack\n");
+	return EXIT_FAILURE;
+    }
+    ss.ss_size = RUBY_SIGALTSTACK_SIZE;
+    ss.ss_flags = 0;
+    if (sigaltstack(&ss, NULL) == -1) {
+	fprintf(stderr, "sigaltstack failed\n");
+	return EXIT_FAILURE;
+    }
+    memset(&sa, 0, sizeof(struct sigaction));
+    sigemptyset(&sa.sa_mask);
+    sa.sa_sigaction = sigsegv;
+    sa.sa_flags |= SA_SIGINFO;
+    sa.sa_flags |= SA_ONSTACK;
+    sigaction(SIGSEGV, &sa, NULL);
+    a[0] = 1;
+    return EXIT_SUCCESS;
+}
+]])],
+	rb_cv_broken_backtrace=no,
+	rb_cv_broken_backtrace=yes,
+	rb_cv_broken_backtrace=no)])
+  AS_IF([test "$rb_cv_broken_backtrace" = yes], [
+    AC_DEFINE(BROKEN_BACKTRACE, 1)
+  ])
+])
+
+AC_ARG_WITH(valgrind,
+        AS_HELP_STRING([--without-valgrind],[disable valgrind memcheck support]),
+        [], with_valgrind=yes)
+AS_IF([test x$with_valgrind != xno],
+        [AC_CHECK_HEADERS(valgrind/memcheck.h)])
+
+dln_a_out_works=no
+AS_IF([test "$ac_cv_header_a_out_h" = yes], [
+  AS_IF([test "$with_dln_a_out" = yes || test "$rb_cv_dlopen" = unknown], [
+    cat confdefs.h > config.h
+    AC_CACHE_CHECK(whether matz's dln works, rb_cv_dln_a_out,
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#define USE_DLN_A_OUT
+#include "dln.c"
+]], [[]])],
+	rb_cv_dln_a_out=yes,
+	rb_cv_dln_a_out=no)])
+    AS_IF([test "$rb_cv_dln_a_out" = yes], [
+      dln_a_out_works=yes
+      AC_DEFINE(USE_DLN_A_OUT)
+    ])
+  ])
+])
+
+AS_IF([test "$dln_a_out_works" = yes], [
+  AS_IF([test "$GCC" = yes], [
+    STATIC=-static
+  ], [
+    STATIC=-Bstatic
+  ])
+  DLEXT=so
+  CCDLFLAGS=
+], [
+  AS_CASE(["$target_os"],
+    [hpux*], [
+	DLEXT=sl],
+    [darwin*], [
+	SOEXT=dylib
+	DLEXT=bundle],
+    [cygwin*|mingw*|*djgpp*], [
+	LOAD_RELATIVE=1
+	SOEXT=dll
+	DLEXT=so],
+    [
+	DLEXT=so])
+])
+: ${SOEXT="${DLEXT}"}
+AC_SUBST(SOEXT)
+AS_IF([test "$rb_cv_dlopen:$load_relative" = yes:yes], [
+    AS_IF([test "$ac_cv_func_dladdr" = yes], [
+	LOAD_RELATIVE=1
+    ])
+])
+AS_IF([test x"$LOAD_RELATIVE" = x1], [
+    load_relative=yes
+], [
+    unset load_relative
+])
+
+len=2 # .rb
+n=`expr "$DLEXT"  : '.*'`; test "$n" -gt "$len" && len=$n
+n=`expr "$DLEXT2" : '.*'`; test "$n" -gt "$len" && len=$n
+AC_DEFINE_UNQUOTED(DLEXT_MAXLEN, `expr $len + 1`)
+test ".$DLEXT"  = "." || AC_DEFINE_UNQUOTED(DLEXT,  ".$DLEXT")
+test ".$DLEXT2" = "." || AC_DEFINE_UNQUOTED(DLEXT2, ".$DLEXT2")
+AC_SUBST(DLEXT)
+
+AS_IF([test "$with_dln_a_out" = yes], [
+  STRIP=true
+], [
+    AC_MSG_CHECKING([for $STRIP flags])
+    AC_LINK_IFELSE([AC_LANG_PROGRAM], [AS_IF(
+        ["${STRIP}" -A -n conftest$ac_exeext 2>/dev/null], [
+            AC_MSG_RESULT([-A -n])
+            STRIP="${STRIP} -A -n"
+        ],
+        ["${STRIP}" -S -x conftest$ac_exeext 2>/dev/null], [
+            AC_MSG_RESULT([-S -x])
+            STRIP="${STRIP} -S -x"
+        ], [
+            AC_MSG_RESULT([none needed])
+        ])
+    ])
+])
+
+
+AC_ARG_WITH(ext,
+            AS_HELP_STRING([--with-ext=EXTS],
+                           [pass to --with-ext option of extmk.rb]))
+AC_ARG_WITH(out-ext,
+            AS_HELP_STRING([--with-out-ext=EXTS],
+                           [pass to --without-ext option of extmk.rb]))
+EXTSTATIC=
+AC_SUBST(EXTSTATIC)dnl
+AC_ARG_WITH(static-linked-ext,
+	    AS_HELP_STRING([--with-static-linked-ext], [link external modules statically]),
+            [AS_CASE([$withval],[yes],[STATIC=;EXTSTATIC=static],[no],[],[EXTSTATIC="$withval"])])
+AS_CASE([",$EXTSTATIC,"], [,static,|*,enc,*], [
+  ENCOBJS='enc/encinit.$(OBJEXT) enc/libenc.$(LIBEXT) enc/libtrans.$(LIBEXT)'
+  EXTOBJS='ext/extinit.$(OBJEXT)'
+  AC_DEFINE_UNQUOTED(EXTSTATIC, 1)
+  AC_SUBST(ENCSTATIC, static)
+], [
+  ENCOBJS='dmyenc.$(OBJEXT)'
+  EXTOBJS='dmyext.$(OBJEXT)'
+])
+AC_SUBST(ENCOBJS)
+AC_SUBST(EXTOBJS)
+
+AC_ARG_WITH(setup,
+	    AS_HELP_STRING([--with-setup=SETUP], [use extension libraries setup]),
+	    [setup=$withval])
+AS_IF([test -n "$setup"], [
+    AS_IF([! test -f "ext/$setup" -o -f "$srcdir/ext/$setup"], [
+	AC_MSG_ERROR(Setup file $setup not found under ext or $srcdir/ext)
+    ])
+], [test -f "$srcdir/ext/Setup.$target_os"], [
+    setup="Setup.$target_os"
+], [
+    setup=
+    for file in "$srcdir"/ext/Setup.*; do
+	AS_CASE(["$file"], [*~|*.bak|*.orig|*.rej|*.tmp], [continue])
+	setup=`basename "$file"`
+	AS_CASE(["$target_os"], [`expr "$setup" : 'Setup.\(.*\)'`*], [break])
+	platform=`sed '/^option  *platform  */!d;s///;s/|/*|/g;q' "$file"`
+	AS_IF([test "x$platform" != x], [
+	    eval "AS_CASE([\"\$target_os\"], [$platform*], [break])"
+	])
+	setup=
+    done
+    : ${setup:=Setup}
+])
+AC_SUBST(setup)
+
+rubylibprefix='${libdir}/${RUBY_BASE_NAME}'
+AC_ARG_WITH(rubylibprefix,
+	    AS_HELP_STRING([--with-rubylibprefix=DIR], [prefix for ruby libraries [[LIBDIR/RUBY_BASE_NAME]]]),
+	    [AS_IF([test "x$withval" = xno], [
+		AC_MSG_ERROR([No ruby, No libprefix])
+	    ])
+	    rubylibprefix="$withval"])
+AC_SUBST(rubylibprefix)
+
+AS_IF([test x"${exec_prefix}" != xNONE], [
+    RUBY_EXEC_PREFIX="$exec_prefix"
+], [test x"$prefix" != xNONE], [
+    RUBY_EXEC_PREFIX="$prefix"
+], [
+    RUBY_EXEC_PREFIX=$ac_default_prefix
+])
+pat=`echo "${RUBY_EXEC_PREFIX}" | tr -c '\012' .`'\(.*\)'
+for var in bindir libdir rubylibprefix; do
+    eval val='"$'$var'"'
+    AS_CASE(["$val"], ["${RUBY_EXEC_PREFIX}"*], [val='${exec_prefix}'"`expr \"$val\" : \"$pat\"`"])
+    eval $var='"$val"'
+done
+
+BTESTRUBY='$(MINIRUBY)'
+BOOTSTRAPRUBY='$(BASERUBY)'
+AS_IF([test x"$cross_compiling" = xyes], [
+  test x"$MINIRUBY" = x && MINIRUBY="${RUBY-$BASERUBY} -I`$CHDIR .; pwd` "-r'$(arch)-fake'
+  XRUBY_LIBDIR=`${RUBY-$BASERUBY} -rrbconfig -e ['puts RbConfig::CONFIG["libdir"]']`
+  XRUBY_RUBYLIBDIR=`${RUBY-$BASERUBY} -rrbconfig -e ['puts RbConfig::CONFIG["rubylibdir"]']`
+  XRUBY_RUBYHDRDIR=`${RUBY-$BASERUBY} -rrbconfig -e ['puts RbConfig::CONFIG["rubyhdrdir"]']`
+  AC_SUBST(XRUBY_LIBDIR)
+  AC_SUBST(XRUBY_RUBYLIBDIR)
+  AC_SUBST(XRUBY_RUBYHDRDIR)
+  PREP='$(arch)-fake.rb'
+  RUNRUBY_COMMAND='$(MINIRUBY) -I`cd $(srcdir)/lib; pwd`'
+  RUNRUBY='$(RUNRUBY_COMMAND)'
+  XRUBY='$(MINIRUBY)'
+  TEST_RUNNABLE=no
+  CROSS_COMPILING=yes
+  AC_DEFINE(CROSS_COMPILING, 1)
+], [
+  MINIRUBY='./miniruby$(EXEEXT) -I$(srcdir)/lib -I.'
+  MINIRUBY="$MINIRUBY"' -I$(EXTOUT)/common'
+  PREP='miniruby$(EXEEXT)'
+  RUNRUBY_COMMAND='$(MINIRUBY) $(tooldir)/runruby.rb --extout=$(EXTOUT) $(RUNRUBYOPT)'
+  RUNRUBY='$(RUNRUBY_COMMAND) --'
+  XRUBY='$(RUNRUBY)'
+  AS_CASE(["$HAVE_BASERUBY:$build_os"], [no:*|*:mingw*], [BOOTSTRAPRUBY='$(MINIRUBY)'])
+  TEST_RUNNABLE=yes
+  CROSS_COMPILING=no
+])
+AC_SUBST(TEST_RUNNABLE)
+AC_SUBST(CROSS_COMPILING)
+AC_SUBST(MINIRUBY)
+AC_SUBST(BTESTRUBY)
+AC_SUBST(PREP)
+AC_SUBST(RUNRUBY_COMMAND)
+AC_SUBST(RUNRUBY)
+AC_SUBST(XRUBY)
+AC_SUBST(BOOTSTRAPRUBY)
+AC_SUBST(EXTOUT, [${EXTOUT=.ext}])
+
+FIRSTMAKEFILE=""
+LIBRUBY_A='lib$(RUBY_SO_NAME)-static.a'
+LIBRUBY='$(LIBRUBY_A)'
+LIBRUBYARG_STATIC='-l$(RUBY_SO_NAME)-static'
+LIBRUBYARG='$(LIBRUBYARG_STATIC)'
+SOLIBS='$(MAINLIBS)'
+
+AS_CASE(["$target_os"],
+  [cygwin*|mingw*|haiku*|darwin*], [
+    : ${DLDLIBS=""}
+    ],
+  [
+    DLDLIBS="$DLDLIBS -lc"
+    ])
+
+AC_ARG_ENABLE(multiarch,
+	      AS_HELP_STRING([--enable-multiarch], [enable multiarch compatible directories]),
+	      [multiarch=], [unset multiarch])
+AS_IF([test ${multiarch+set}], [
+   AC_DEFINE(ENABLE_MULTIARCH)
+   MJIT_HEADER_INSTALL_DIR=include/'${arch}/${RUBY_VERSION_NAME}'
+], [
+   MJIT_HEADER_INSTALL_DIR=include/'${RUBY_VERSION_NAME}/${arch}'
+])
+
+archlibdir='${libdir}/${arch}'
+sitearchlibdir='${libdir}/${sitearch}'
+archincludedir='${includedir}/${arch}'
+sitearchincludedir='${includedir}/${sitearch}'
+
+AC_ARG_WITH(soname,
+	AS_HELP_STRING([--with-soname=SONAME], [base name of shared library]),
+	[RUBY_SO_NAME=$withval],
+	[
+	    AS_CASE(["$target_os"],
+	    [darwin*], [
+	        RUBY_SO_NAME='$(RUBY_BASE_NAME).$(RUBY_API_VERSION)'
+	    ],
+	    [cygwin*], [
+	        RUBY_SO_NAME='$(RUBY_BASE_NAME)$(MAJOR)$(MINOR)0'
+	    ],
+	    [mingw*], [
+		RUBY_SO_NAME="${rb_cv_msvcrt}"'-$(RUBY_BASE_NAME)$(MAJOR)$(MINOR)0'
+		AS_IF([test x"${target_cpu}" != xi386], [
+		    RUBY_SO_NAME="${target_cpu}-${RUBY_SO_NAME}"
+		])
+	    ],
+	    [RUBY_SO_NAME='$(RUBY_BASE_NAME)'])
+	])
+
+LIBRUBY_LDSHARED=${DLDSHARED=${LDSHARED}}
+LIBRUBY_DLDFLAGS=$DLDFLAGS
+LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT).$(RUBY_PROGRAM_VERSION)'
+LIBRUBY_SONAME='lib$(RUBY_SO_NAME).$(SOEXT).$(RUBY_API_VERSION)'
+LIBRUBY_ALIASES='lib$(RUBY_SO_NAME).$(SOEXT)'
+ENABLE_SHARED=no
+
+AC_ARG_ENABLE(shared,
+       AS_HELP_STRING([--enable-shared], [build a shared library for Ruby]),
+       [enable_shared=$enableval])
+libprefix=${multiarch+'$(archlibdir)'}${multiarch-'$(libdir)'}
+LIBRUBY_RELATIVE=${load_relative-no}
+AS_CASE("$enable_shared", [yes], [
+  LIBRUBY='$(LIBRUBY_SO)'
+  LIBRUBYARG_SHARED='-l$(RUBY_SO_NAME)'
+  LIBRUBYARG='$(LIBRUBYARG_SHARED)'
+  LIBRUBY_RELATIVE=no
+  test -z "$CCDLFLAGS" || CFLAGS="$CFLAGS $CCDLFLAGS"
+  ENABLE_SHARED=yes
+
+  # libdir can be overridden in config.site file (on OpenSUSE at least).
+  libdir_basename=lib
+  AS_IF([test "$bindir" = '${exec_prefix}/bin'], [
+    AS_CASE(["$libdir"], ['${exec_prefix}/'*], [libdir_basename=`basename "$libdir"`])
+  ])
+  AC_DEFINE_UNQUOTED(LIBDIR_BASENAME, ["${libdir_basename}"])
+  libdir_basename="${libdir_basename}"${multiarch+'/${arch}'}
+
+  RUBY_TRY_LDFLAGS([${linker_flag}--no-as-needed], [no_as_needed=yes], [no_as_needed=no])
+  AS_IF([test "$no_as_needed" = yes], [
+      RUBY_APPEND_OPTIONS(LDFLAGS, [${linker_flag}--no-as-needed])
+  ])
+
+  AS_CASE(["$target_os"],
+    [freebsd*|dragonfly*], [],
+    [
+     AS_IF([test "$GCC" = yes], [
+       RUBY_TRY_LDFLAGS([${linker_flag}--no-undefined], [no_undefined=yes], [no_undefined=no])
+       AS_IF([test "no_undefined" = yes], [
+	  RUBY_APPEND_OPTION(EXTLDFLAGS, [${linker_flag}--no-undefined])
+       ])
+     ])
+    ])
+
+  AS_CASE(["$target_os"],
+    [sunos4*], [
+	LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
+	],
+    [linux* | gnu* | k*bsd*-gnu | atheos* | kopensolaris*-gnu | haiku*], [
+	RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ['-Wl,-soname,$(LIBRUBY_SONAME)' "$LDFLAGS_OPTDIR"])
+	LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
+	AS_IF([test "$load_relative" = yes], [
+	    libprefix="'\$\${ORIGIN}/../${libdir_basename}'"
+	    LIBRUBY_RPATHFLAGS="-Wl,-rpath,${libprefix}"
+	    LIBRUBY_RELATIVE=yes
+	])
+	],
+    [freebsd*|dragonfly*], [
+	LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR)$(MINOR)'
+	LIBRUBY_SONAME='$(LIBRUBY_SO)'
+	AS_IF([test "$rb_cv_binary_elf" != "yes" ], [
+	    LIBRUBY_SO="$LIBRUBY_SO.\$(TEENY)"
+	    LIBRUBY_ALIASES=''
+	])
+	],
+    [netbsd*], [
+	LIBRUBY_SONAME='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR)$(MINOR)'
+	LIBRUBY_SO="${LIBRUBY_SONAME}"'.$(TEENY)'
+	RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ['-Wl,-soname,$(LIBRUBY_SONAME)' "$LDFLAGS_OPTDIR"])
+	AS_IF([test "$rb_cv_binary_elf" = yes], [ # ELF platforms
+	   LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
+	], [	# a.out platforms
+	   LIBRUBY_ALIASES=""
+	])
+	],
+    [openbsd*|mirbsd*], [
+	LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR).'`expr ${MINOR} \* 10 + ${TEENY}`
+	],
+    [solaris*], [
+	LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR)'
+	LIBRUBY_SONAME='lib$(RUBY_SO_NAME).$(SOEXT).$(RUBY_PROGRAM_VERSION)'
+	LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
+	RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ["${linker_flag}-h${linker_flag:+,}"'$(@F)'])
+	XLDFLAGS="$XLDFLAGS "'-R${libdir}'
+	],
+    [hpux*], [
+	XLDFLAGS="$XLDFLAGS "'-Wl,+s,+b,$(libdir)'
+	LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
+	],
+    [aix*], [
+	RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ["${linker_flag}-bnoentry" "$XLDFLAGS" "$LDFLAGS_OPTDIR"])
+	LIBRUBYARG_SHARED='-L${libdir} -l${RUBY_SO_NAME}'
+	LIBS="$LIBS -lm -lc"
+	],
+    [darwin*], [
+	LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT)'
+	LIBRUBY_SONAME='$(LIBRUBY_SO)'
+	LIBRUBY_ALIASES='lib$(RUBY_INSTALL_NAME).$(SOEXT)'
+	AS_IF([test "$load_relative" = yes], [
+	    libprefix="@executable_path/../${libdir_basename}"
+	    LIBRUBY_RELATIVE=yes
+	])
+	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS -install_name ${libprefix}"'/$(LIBRUBY_SONAME)'
+	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-compatibility_version $(RUBY_API_VERSION)'
+	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-current_version $(RUBY_PROGRAM_VERSION)'
+	AS_IF([test "$visibility_option" = ld], [
+	    LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,_Init_*'
+	    LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,_ruby_static_id_*'
+	    LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,*_threadptr_*'
+	])
+	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "' $(XLDFLAGS)'
+	],
+    [interix*], [
+	LIBRUBYARG_SHARED='-L. -L${libdir} -l$(RUBY_SO_NAME)'
+	],
+    [mingw*|cygwin*|mswin*], [
+	LIBRUBY_RELATIVE=yes
+	])
+], [
+  LIBRUBYARG_SHARED=
+
+  # enable PIE if possible
+  AC_ARG_ENABLE(pie,
+          AS_HELP_STRING([--disable-pie], [disable PIE feature]),
+          [pie=$enableval], [pie=])
+  AS_IF([test "$GCC" = yes -a -z "$EXTSTATIC" -a "x$pie" != xno], [
+    RUBY_TRY_CFLAGS(-fPIE, [pie=yes], [pie=no])
+    AS_IF([test "$pie" = yes], [
+      # Use -fPIE when testing -pie.  RUBY_TRY_LDFLAGS sets
+      # $save_CFLAGS internally, so set other name here.
+      save_CFLAGS_before_pie="$CFLAGS"
+      CFLAGS="$CFLAGS -fPIE"
+
+      # gcc need -pie but clang need -Wl,-pie.
+      for pie in -pie -Wl,-pie; do
+	RUBY_TRY_LDFLAGS([$pie], [], [pie=])
+	AS_IF([test "x$pie" != x], [
+	  RUBY_APPEND_OPTION(XCFLAGS, -fPIE)
+	  RUBY_APPEND_OPTION(XLDFLAGS, $pie)
+	  break
+	])
+      done
+      CFLAGS="$save_CFLAGS_before_pie"
+    ])
+  ])
+])
+AS_IF([test "$enable_rpath" = yes], [
+    test -z "$LIBRUBY_RPATHFLAGS" || LIBRUBY_RPATHFLAGS="$LIBRUBY_RPATHFLAGS "
+    rpathflag="${RPATHFLAG}"
+    AS_CASE(["${cross_compiling}${load_relative}"], [*yes*], [], [rpathflag="$RPATHFLAG$LIBPATHFLAG"])
+    rpathflag=`IFS="$PATH_SEPARATOR"
+        echo x "$rpathflag" |
+        sed "s/^x *//;s${IFS}"'%1\\$-s'"${IFS}${libprefix}${IFS}g;s${IFS}%s${IFS}${libprefix}${IFS}g"
+    `
+    LIBRUBY_RPATHFLAGS="$LIBRUBY_RPATHFLAGS${rpathflag}"
+    LIBRUBYARG_SHARED="$LIBRUBY_RPATHFLAGS $LIBRUBYARG_SHARED"
+    LIBRUBYARG_STATIC="$LIBRUBY_RPATHFLAGS $LIBRUBYARG_STATIC"
+])
+AC_SUBST(LIBRUBY_RELATIVE)
+
+LDFLAGS="-L. $LDFLAGS"
+AC_SUBST(ARCHFILE)
+
+AS_IF([test "$EXEEXT" = .exe], [
+    EXECUTABLE_EXTS='".exe",".com",".cmd",".bat"'
+    AC_DEFINE_UNQUOTED(EXECUTABLE_EXTS, $EXECUTABLE_EXTS)
+    EXECUTABLE_EXTS=`echo $EXECUTABLE_EXTS | tr -d '"' | tr , ' '`
+    AC_SUBST(EXECUTABLE_EXTS)
+])
+
+AS_CASE("$cross_compiling:${LIBPATHENV}", [yes:* | no:], [], [
+    AC_MSG_CHECKING(whether wrapper for $LIBPATHENV is needed)
+    AS_IF([env ${LIBPATHENV}=/lib /bin/sh -c ': ${'${LIBPATHENV}'?}' 2>/dev/null],
+	[AC_MSG_RESULT(no)],
+	[PREP="$PREP"' exe/$(PROGRAM)'
+	AC_MSG_RESULT(yes)]
+    )
+])
+
+AC_ARG_ENABLE(dtrace,
+        AS_HELP_STRING([--enable-dtrace],
+        [enable DTrace for tracing inside ruby. enabled by default on systems having dtrace]),
+        [enable_dtrace=$enableval], [enable_dtrace=auto])
+
+LIBRUBY_A_OBJS='$(OBJS)'
+DTRACE_REBUILD=
+AS_CASE(["${enable_dtrace}"],
+[yes|auto], [
+    RUBY_DTRACE_AVAILABLE()
+], [
+    rb_cv_dtrace_available=no
+])
+AS_CASE(["$target_os"],[freebsd*],[
+         rb_cv_dtrace_available=no
+	 ])
+AS_IF([test "${enable_dtrace}" = yes], [dnl
+    AS_IF([test -z "$DTRACE"], [dnl
+	AC_MSG_ERROR([dtrace(1) is missing])
+    ], [test "$cross_compiling" = yes], [dnl
+	AC_MSG_ERROR([--enable-dtrace, however, cross compiling])
+    ], [test "${rb_cv_dtrace_available}" = "no"], [dnl
+       AC_MSG_ERROR([--enable-dtrace, however, USDT is not available])
+    ])
+])
+AS_CASE([$rb_cv_dtrace_available],
+[yes*], [dnl
+    RUBY_DTRACE_POSTPROCESS()
+    AS_IF([test "$rb_cv_prog_dtrace_g" != no], [dnl
+	DTRACE_OBJ='probes.$(OBJEXT)'
+    ])
+    AS_IF([test "$rb_cv_prog_dtrace_g" = rebuild], [dnl
+	DTRACE_REBUILD=yes
+	LIBRUBY_A_OBJS='$(DTRACE_GLOMMED_OBJ)'
+    ])
+    AS_CASE("${target_os}", [freebsd*], [dnl
+        # FreeBSD's dtrace requires libelf
+        LIBS="-lelf $LIBS"
+    ])
+    DTRACE_EXT=d
+], [dnl
+    enable_dtrace=no
+    DTRACE_EXT=dmyh
+])
+AC_SUBST(DTRACE_EXT)
+AC_SUBST(DTRACE_OBJ)
+AC_SUBST(DTRACE_REBUILD)
+AC_SUBST(DTRACE_OPT)
+AC_SUBST(LIBRUBY_A_OBJS)
+
+AC_ARG_ENABLE(gcov,
+       AS_HELP_STRING([--enable-gcov], [enable coverage measurement by gcov]),
+       [gcov=yes])
+AS_IF([test x"$gcov" = xyes], [
+    CFLAGS="$CFLAGS -coverage"
+    LDFLAGS="$LDFLAGS -coverage"
+])
+
+RUBY_SETJMP_TYPE
+}
+
+: "build section" && {
+dnl build rdoc index if requested
+RDOCTARGET=""
+CAPITARGET=""
+AC_ARG_ENABLE(install-doc,
+       AS_HELP_STRING([--disable-install-doc], [do not install either rdoc indexes or C API documents during install]),
+       [install_doc=$enableval], [install_doc=yes])
+AC_ARG_WITH(rdoc,
+      AS_HELP_STRING([--with-rdoc=ri,html], [comma/space separated list of RDoc formats to install]),
+      [install_rdoc=`echo ,$withval, | sed 'y/,/ /;s/ ri / rdoc /;s/^ *//;s/ *$//'`], [
+AC_ARG_ENABLE(install-rdoc,
+      AS_HELP_STRING([--disable-install-rdoc], [do not install rdoc indexes during install]),
+      [install_rdoc=$enableval], [install_rdoc=yes])
+])
+AC_ARG_ENABLE(install-capi,
+      AS_HELP_STRING([--disable-install-capi], [do not install C API documents during install]),
+      [install_capi=$enableval], [install_capi=no])
+
+AS_IF([test "$install_doc" != no], [
+    AS_CASE(["$install_rdoc"],
+    [yes], [
+	RDOCTARGET="rdoc"
+    ],
+    [all], [
+	RDOCTARGET="rdoc html"
+    ],
+    [no|''], [
+	RDOCTARGET="nodoc"
+    ],
+    [
+	RDOCTARGET="$install_rdoc"
+    ])
+    AS_IF([test "$install_capi" != no -a -n "$DOXYGEN"], [
+	CAPITARGET="capi"
+    ], [
+	CAPITARGET="nodoc"
+    ])
+], [
+    RDOCTARGET="nodoc"
+    CAPITARGET="nodoc"
+])
+
+AC_SUBST(RDOCTARGET)
+AC_SUBST(CAPITARGET)
+
+AS_CASE(["$RDOCTARGET:$CAPITARGET"],[nodoc:nodoc],[INSTALLDOC=nodoc],[INSTALLDOC=all])
+AC_SUBST(INSTALLDOC)
+
+AC_ARG_ENABLE(jit-support,
+        AS_HELP_STRING([--disable-jit-support], [disable JIT features]),
+        [MJIT_SUPPORT=$enableval
+         AS_IF([test x"$enable_jit_support" = "xyes"],
+                 [AC_DEFINE(USE_MJIT, 1)],
+                 [AC_DEFINE(USE_MJIT, 0)])],
+        [MJIT_SUPPORT=yes
+         AC_DEFINE(USE_MJIT, 1)])
+
+AC_SUBST(MJIT_SUPPORT)
+
+AC_ARG_ENABLE(install-static-library,
+	AS_HELP_STRING([--disable-install-static-library], [do not install static ruby library]),
+	[INSTALL_STATIC_LIBRARY=$enableval],
+	AS_IF([test x"$enable_shared" = xyes],
+	    [INSTALL_STATIC_LIBRARY=no],
+	    [INSTALL_STATIC_LIBRARY=yes]))
+AC_SUBST(INSTALL_STATIC_LIBRARY)
+
+AS_IF([test "$rb_with_pthread" = "yes"], [
+    THREAD_MODEL=pthread
+])
+AC_CACHE_CHECK([for prefix of external symbols], rb_cv_symbol_prefix, [
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[extern void conftest_external(void) {}]], [[]])],[
+	rb_cv_symbol_prefix=`$NM conftest.$ac_objext |
+			     sed -n ['/.*T[ 	]\([^ 	]*\)conftest_external.*/!d;s//\1/p;q']`
+	],
+	[rb_cv_symbol_prefix=''])
+    test -n "$rb_cv_symbol_prefix" || rb_cv_symbol_prefix=NONE
+])
+SYMBOL_PREFIX="$rb_cv_symbol_prefix"
+test "x$SYMBOL_PREFIX" = xNONE && SYMBOL_PREFIX=''
+DLNOBJ=dln.o
+AC_ARG_ENABLE(dln,
+	      AS_HELP_STRING([--disable-dln], [disable dynamic link feature]),
+	      [test "$enableval" = yes || DLNOBJ=dmydln.o])
+AC_SUBST(DLNOBJ)
+MINIDLNOBJ=dmydln.o
+
+AS_CASE(["$target_os"],
+    [linux*], [
+	],
+    [netbsd*], [
+	RUBY_APPEND_OPTION(CFLAGS, -pipe)
+	],
+    [darwin*], [
+	RUBY_APPEND_OPTION(CFLAGS, -pipe)
+	AC_COMPILE_IFELSE([
+	    AC_LANG_BOOL_COMPILE_TRY([@%:@include <AvailabilityMacros.h>],
+		[MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_7])],
+	    [dnl
+		RUBY_APPEND_OPTION(XLDFLAGS, [-framework Security])
+		RUBY_APPEND_OPTION(LIBRUBYARG_STATIC, [-framework Security])
+	    ]dnl
+	)
+	RUBY_APPEND_OPTION(XLDFLAGS, [-framework Foundation])
+	RUBY_APPEND_OPTION(LIBRUBYARG_STATIC, [-framework Foundation])
+	],
+    [osf*], [
+	AS_IF([test "$GCC" != "yes" ], [
+	  # compile something small: taint.c is fine for this.
+	  # the main point is the '-v' flag of 'cc'.
+	  AS_CASE(["`cc -v -I. -c main.c -o /tmp/main.o 2>&1`"],
+	  [*/gemc_cc*], [   # we have the new DEC GEM CC
+                        CFLAGS="$CFLAGS -oldc"
+                        ],
+          [            # we have the old MIPS CC
+                        ])
+	  # cleanup
+	  rm -f /tmp/main.o
+	  CFLAGS="$CFLAGS -std"
+	])
+	],
+    [cygwin*|mingw*], [
+	LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' -Wl,--out-implib=$(LIBRUBY)'
+	AS_CASE(["$target_os"],
+	[cygwin*], [
+	    AS_IF([test x"$enable_shared" = xyes], [
+		LIBRUBY_SO='cyg$(RUBY_SO_NAME)'.dll
+		LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
+	    ])
+	    ],
+	[mingw*], [
+	    AS_IF([test x"$enable_shared" = xyes], [
+		LIBRUBY_SO='$(RUBY_SO_NAME)'.dll
+		LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
+	    ])
+	    EXPORT_PREFIX=' '
+	    DLDFLAGS="${DLDFLAGS}"' $(DEFFILE)'
+	    AC_LIBOBJ([win32/win32])
+	    AC_LIBOBJ([win32/file])
+	    COMMON_LIBS=m
+#	    COMMON_MACROS="WIN32_LEAN_AND_MEAN="
+	    COMMON_HEADERS="winsock2.h windows.h"
+	    THREAD_MODEL=win32
+	    PLATFORM_DIR=win32
+	    ])
+	LIBRUBY_ALIASES=''
+	FIRSTMAKEFILE=GNUmakefile:cygwin/GNUmakefile.in
+	AS_IF([test x"$enable_shared" = xyes], [
+	    LIBRUBY='lib$(RUBY_SO_NAME).dll.a'
+	], [
+	    LIBRUBY_SO=dummy
+	    LIBRUBY='lib$(RUBY_SO_NAME).a'
+	    LIBRUBYARG='-l$(RUBY_SO_NAME)'
+	])
+	],
+    [hpux*], [
+	AS_CASE(["$YACC"],[*yacc*], [
+	    XCFLAGS="$XCFLAGS -DYYMAXDEPTH=300"
+	    YACC="$YACC -Nl40000 -Nm40000"
+	])
+])
+
+MINIOBJS="$MINIDLNOBJ"
+
+AS_CASE(["$THREAD_MODEL"],
+[pthread], [AC_CHECK_HEADERS(pthread.h)],
+[win32],   [],
+[""],      [AC_MSG_ERROR(thread model is missing)],
+           [AC_MSG_ERROR(unknown thread model $THREAD_MODEL)])
+
+AC_ARG_ENABLE(debug-env,
+       AS_HELP_STRING([--enable-debug-env], [enable RUBY_DEBUG environment variable]),
+       [AC_SUBST(ENABLE_DEBUG_ENV, yes)])
+
+AS_CASE(["$FIRSTMAKEFILE"], [*GNUmakefile:*], [gnumake=yes], [
+    AC_MSG_CHECKING([if ${MAKE-make} is GNU make])
+    mkdir conftest.dir
+    echo "all:; @echo yes" > conftest.dir/GNUmakefile
+    echo "all:; @echo no" > conftest.dir/Makefile
+    gnumake=`(cd conftest.dir; ${MAKE-make})`
+    rm -fr conftest.dir
+    AS_CASE(["$gnumake"],
+    [*yes*], [
+	FIRSTMAKEFILE=GNUmakefile:template/GNUmakefile.in
+	gnumake=yes],
+    [
+	gnumake=no])
+    AC_MSG_RESULT($gnumake)
+])
+AS_IF([test "$gnumake" = yes], [ NULLCMD=: ], [
+    AC_MSG_CHECKING([for safe null command for ${MAKE-make}])
+    mkdir conftest.dir
+    NULLCMD=
+    for cmd in : true; do
+	echo 'A=1' > conftest.dir/Makefile
+	echo 'B=$(A:1=@'$cmd')' >> conftest.dir/Makefile
+	echo 'all:; $B 1 2 3 4 5 6 7 8 9' >> conftest.dir/Makefile
+	AS_IF([(cd conftest.dir; ${MAKE-make} >/dev/null 2>/dev/null)], [
+	    NULLCMD=$cmd
+	    break
+	])
+    done
+    rm -fr conftest.dir
+    AS_IF([test -z "$NULLCMD"], [
+	AC_MSG_ERROR(no candidate for safe null command)
+    ])
+    AC_MSG_RESULT($NULLCMD)
+])
+AC_SUBST(NULLCMD)
+
+AS_IF([test "${universal_binary-no}" = yes ], [
+    AC_CACHE_CHECK([for architecture macros], rb_cv_architecture_macros, [
+    mv confdefs.h confdefs1.h
+    : > confdefs.h
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@if defined __`echo ${universal_archnames} |
+    sed 's/=[^ ]*//g;s/ /__ || defined __/g'`__
+@%:@else
+@%:@error
+>>>>>><<<<<<
+@%:@endif]], [[]])],[
+    rb_cv_architecture_macros=yes
+    mv -f confdefs1.h confdefs.h
+], [
+    rb_cv_architecture_macros=no
+    archflagpat=`eval echo '"'"${ARCH_FLAG}"'"' | sed 's/[[][|.*]]/\\&/g'`
+    new_cflags=`echo "$CFLAGS" | sed "s|$archflagpat"'||'`
+    for archs in ${universal_archnames}; do
+	cpu=${archs@%:@*=}
+	archs=${archs%=*}
+	CFLAGS="$new_cflags -arch $archs"
+	archs="__${archs}__"
+	AC_MSG_CHECKING([for macro ${archs} on ${cpu}])
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@ifndef ${archs}
+@%:@error
+@%:@endif]], [[]])],
+	[AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no])])
+    done
+    mv -f confdefs1.h confdefs.h
+    AC_MSG_ERROR([failed])
+    ])])
+    AC_CACHE_CHECK(whether __ARCHITECTURE__ is available, rb_cv_architecture_available,
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdio.h>
+		const char arch[[]] = __ARCHITECTURE__;]], [[puts(arch);]])],
+		[rb_cv_architecture_available=yes], [rb_cv_architecture_available=no]))
+])
+
+: ${MJIT_LDSHARED=`echo "$LDSHARED" | sed ['s|\$(LD)|'"${LD}"'|g;s|\$(CC)|$(MJIT_CC)|g']`}
+
+MAINLIBS="$LIBS"
+LIBS=$ORIG_LIBS
+AS_IF([test -n "${LIBS}"], [
+    libspat=`echo "${LIBS}" | sed 's/[[][|.*$^]]/\\&/g;s/^  */ /;s/^  *$/ /'`
+    MAINFLAGS=`echo " $MAINLIBS " | sed "s|$libspat"'||;s/^ *//;s/ *$//'`
+])
+LIBRUBYARG_STATIC="${LIBRUBYARG_STATIC} \$(MAINLIBS)"
+CPPFLAGS="$CPPFLAGS "'$(DEFS)'
+test -z "$CPPFLAGS" || CPPFLAGS="$CPPFLAGS "; CPPFLAGS="$CPPFLAGS"'${cppflags}'
+AS_IF([test -n "${cflags+set}"], [
+    cflagspat=`eval echo '"'"${cflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^  */ /;s/^  *$/ /'`
+    CFLAGS=`echo " $CFLAGS " | sed "s|$cflagspat"'|${cflags}|;s/^ *//;s/ *$//'`
+])
+AS_IF([test -n "${cxxflags+set}"], [
+    cxxflagspat=`eval echo '"'"${cxxflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^  */ /;s/^  *$/ /'`
+    CXXFLAGS=`echo " $CXXFLAGS " | sed "s|$cxxflagspat"'|${cxxflags}|;s/^ *//;s/ *$//'`
+])
+AS_IF([test "${ARCH_FLAG}"], [
+    archflagpat=`eval echo '"'"${ARCH_FLAG}"'"' | sed 's/[[][|.*]]/\\&/g'`
+    CFLAGS=`echo "$CFLAGS" | sed "s| *$archflagpat"'||'`
+    CXXFLAGS=`echo "$CXXFLAGS" | sed "s| *$archflagpat"'||'`
+    LDFLAGS=`echo "$LDFLAGS" | sed "s| *$archflagpat"'||'`
+])
+rb_cv_warnflags=`echo "$rb_cv_warnflags" | sed 's/^ *//;s/ *$//'`
+warnflags="$rb_cv_warnflags"
+AC_SUBST(cppflags)dnl
+AC_SUBST(cflags, ["${orig_cflags:+$orig_cflags }"'${optflags} ${debugflags} ${warnflags}'])dnl
+AC_SUBST(cxxflags)dnl
+AC_SUBST(optflags)dnl
+AC_SUBST(debugflags)dnl
+AC_SUBST(warnflags)dnl
+AC_SUBST(strict_warnflags)dnl
+AC_SUBST(XCFLAGS)dnl
+AC_SUBST(XLDFLAGS)dnl
+AC_SUBST(EXTLDFLAGS)dnl
+AC_SUBST(EXTDLDFLAGS)dnl
+AC_SUBST(LIBRUBY_LDSHARED)
+AC_SUBST(LIBRUBY_DLDFLAGS)
+AC_SUBST(RUBY_INSTALL_NAME)
+AC_SUBST(rubyw_install_name)
+AC_SUBST(RUBYW_INSTALL_NAME)
+AC_SUBST(RUBY_SO_NAME)
+AC_SUBST(LIBRUBY_A)
+AC_SUBST(LIBRUBY_SO)
+AC_SUBST(LIBRUBY_SONAME)
+AC_SUBST(LIBRUBY_ALIASES)
+AC_SUBST(LIBRUBY)
+AC_SUBST(LIBRUBYARG)
+AC_SUBST(LIBRUBYARG_STATIC)
+AC_SUBST(LIBRUBYARG_SHARED)
+AC_SUBST(SOLIBS)
+AC_SUBST(DLDLIBS)
+AC_SUBST(DLDSHARED)
+AC_SUBST(ENABLE_SHARED)
+AC_SUBST(MAINLIBS)
+AC_SUBST(COMMON_LIBS)
+AC_SUBST(COMMON_MACROS)
+AC_SUBST(COMMON_HEADERS)
+AC_SUBST(EXPORT_PREFIX)
+AC_SUBST(SYMBOL_PREFIX)
+AC_SUBST(MINIOBJS)
+AC_SUBST(THREAD_MODEL)
+AC_SUBST(PLATFORM_DIR)
+
+firstmf=`echo $FIRSTMAKEFILE | sed 's/:.*//'`
+firsttmpl=`echo $FIRSTMAKEFILE | sed 's/.*://'`
+MAKEFILES="Makefile $firstmf"
+MAKEFILES="`echo $MAKEFILES`"
+AC_SUBST(MAKEFILES)
+
+ri_prefix=
+test "$program_prefix" != NONE &&
+  ri_prefix=$program_prefix
+
+ri_suffix=
+test "$program_suffix" != NONE &&
+  ri_suffix=$program_suffix
+
+RUBY_INSTALL_NAME="${ri_prefix}"'$(RUBY_BASE_NAME)'"${ri_suffix}"
+AS_CASE(["$target_os"],
+  [cygwin*|mingw*], [
+    RUBYW_INSTALL_NAME="${ri_prefix}"'$(RUBYW_BASE_NAME)'"${ri_suffix}"
+    rubyw_install_name='$(RUBYW_INSTALL_NAME)'
+    ])
+
+rubylibdir='${rubylibprefix}/${ruby_version}'
+rubyarchdir=${multiarch+'${rubyarchprefix}/${ruby_version}'}${multiarch-'${rubylibdir}/${arch}'}
+
+rubyarchprefix=${multiarch+'${archlibdir}/${RUBY_BASE_NAME}'}${multiarch-'${rubylibprefix}/${arch}'}
+AC_ARG_WITH(rubyarchprefix,
+	    AS_HELP_STRING([--with-rubyarchprefix=DIR],
+			   [prefix for architecture dependent ruby libraries [[RUBYLIBPREFIX/ARCH]]]),
+	    [rubyarchprefix="$withval"])
+AC_SUBST(rubyarchprefix)
+
+rubysitearchprefix=${multiarch+'${sitearchlibdir}/${RUBY_BASE_NAME}'}${multiarch-'${rubylibprefix}/${sitearch}'}
+AC_ARG_WITH(rubysitearchprefix,
+	    AS_HELP_STRING([--with-rubysitearchprefix=DIR],
+			   [prefix for architecture dependent site libraries [[RUBYLIBPREFIX/SITEARCH]]]),
+	    [rubysitearchprefix="$withval"])
+AC_SUBST(rubysitearchprefix)
+
+RI_BASE_NAME=`echo ${RUBY_BASE_NAME} | sed 's/ruby/ri/'`
+ridir='${datarootdir}/${RI_BASE_NAME}'
+AC_ARG_WITH(ridir,
+	    AS_HELP_STRING([--with-ridir=DIR], [ri documentation [[DATAROOTDIR/ri]]]),
+	    [ridir=$withval])
+AC_SUBST(ridir)
+AC_SUBST(RI_BASE_NAME)
+
+AC_ARG_WITH(ruby-version,
+	    AS_HELP_STRING([--with-ruby-version=STR], [ruby version string for version specific directories [[full]] (full|minor|STR)]),
+            [ruby_version=$withval],
+            [ruby_version=full])
+unset RUBY_LIB_VERSION
+unset RUBY_LIB_VERSION_STYLE
+AS_CASE(["$ruby_version"],
+  [full],  [RUBY_LIB_VERSION_STYLE='3	/* full */'],
+  [minor], [RUBY_LIB_VERSION_STYLE='2	/* minor */'])
+AS_IF([test ${RUBY_LIB_VERSION_STYLE+set}], [
+    {
+    echo "#define RUBY_LIB_VERSION_STYLE $RUBY_LIB_VERSION_STYLE"
+    echo '#define STRINGIZE(x) x'
+    test -f revision.h -o -f "${srcdir}/revision.h" || echo '#define RUBY_REVISION 0'
+    echo '#include "version.h"'
+    echo 'ruby_version=RUBY_LIB_VERSION'
+    } > conftest.c
+    ruby_version="`$CPP -I. -I"${srcdir}" -I"${srcdir}/include" conftest.c | sed '/^ruby_version=/!d;s/ //g'`"
+    eval $ruby_version
+], [test -z "${ruby_version}"], [
+    AC_MSG_ERROR([No ruby version, No place for bundled libraries])
+], [
+    RUBY_LIB_VERSION="${ruby_version}"
+])
+AC_SUBST(RUBY_LIB_VERSION_STYLE)
+AC_SUBST(RUBY_LIB_VERSION)
+
+AC_ARG_WITH(sitedir,
+	    AS_HELP_STRING([--with-sitedir=DIR], [site libraries in DIR [[RUBY_LIB_PREFIX/site_ruby]], "no" to disable site directory]),
+            [sitedir=$withval],
+            [sitedir='${rubylibprefix}/site_ruby'])
+sitelibdir='${sitedir}/${ruby_version}'
+
+AC_ARG_WITH(sitearchdir,
+	    AS_HELP_STRING([--with-sitearchdir=DIR],
+			   [architecture dependent site libraries in DIR [[SITEDIR/SITEARCH]], "no" to disable site directory]),
+            [sitearchdir=$withval],
+            [sitearchdir=${multiarch+'${rubysitearchprefix}/site_ruby/${ruby_version}'}${multiarch-'${sitelibdir}/${sitearch}'}])
+
+AC_ARG_WITH(vendordir,
+	    AS_HELP_STRING([--with-vendordir=DIR], [vendor libraries in DIR [[RUBY_LIB_PREFIX/vendor_ruby]], "no" to disable vendor directory]),
+            [vendordir=$withval],
+            [vendordir='${rubylibprefix}/vendor_ruby'])
+vendorlibdir='${vendordir}/${ruby_version}'
+
+AC_ARG_WITH(vendorarchdir,
+	    AS_HELP_STRING([--with-vendorarchdir=DIR],
+			   [architecture dependent vendor libraries in DIR [[VENDORDIR/SITEARCH]], "no" to disable vendor directory]),
+            [vendorarchdir=$withval],
+            [vendorarchdir=${multiarch+'${rubysitearchprefix}/vendor_ruby/${ruby_version}'}${multiarch-'${vendorlibdir}/${sitearch}'}])
+
+AS_IF([test "${LOAD_RELATIVE+set}"], [
+    AC_DEFINE_UNQUOTED(LOAD_RELATIVE, $LOAD_RELATIVE)
+    RUBY_EXEC_PREFIX=''
+])
+
+AC_SUBST(RUBY_EXEC_PREFIX)
+
+AC_SUBST(libdirname, ${multiarch+arch}libdir)
+AC_SUBST(archlibdir)dnl
+AC_SUBST(sitearchlibdir)dnl
+AC_SUBST(archincludedir)dnl
+AC_SUBST(sitearchincludedir)dnl
+AC_SUBST(arch)dnl
+AC_SUBST(sitearch)dnl
+AC_SUBST(ruby_version)dnl
+AC_SUBST(rubylibdir)dnl
+AC_SUBST(rubyarchdir)dnl
+AC_SUBST(sitedir)dnl
+AC_SUBST(sitelibdir)dnl
+AC_SUBST(sitearchdir)dnl
+AC_SUBST(vendordir)dnl
+AC_SUBST(vendorlibdir)dnl
+AC_SUBST(vendorarchdir)dnl
+
+AC_SUBST(CONFIGURE, "`echo $0 | sed 's|.*/||'`")dnl
+AC_SUBST(configure_args, "`echo "${ac_configure_args}" | sed 's/\\$/$$/g'`")dnl
+
+AS_IF([test "${universal_binary-no}" = yes ], [
+    arch="universal-${target_os}"
+    AS_IF([test "${rb_cv_architecture_available}" = yes], [
+	AC_DEFINE_UNQUOTED(RUBY_PLATFORM_CPU, __ARCHITECTURE__)
+    ], [
+	for archs in ${universal_archnames}; do
+	    cpu=`echo $archs | sed 's/.*=//'`
+	    archs=`echo $archs | sed 's/=.*//'`
+	    RUBY_DEFINE_IF([defined __${archs}__ &&! defined RUBY_PLATFORM_CPU], RUBY_PLATFORM_CPU, ["${cpu}"])
+	done
+    ])
+    ints='long int short'
+    test "$ac_cv_type_long_long" = yes && ints="'long long' $ints"
+    AC_SUBST(UNIVERSAL_ARCHNAMES, "${universal_archnames}")
+    AC_SUBST(UNIVERSAL_INTS, "${ints}")
+    AC_DEFINE_UNQUOTED(RUBY_PLATFORM_OS, "${target_os}")
+    AC_DEFINE_UNQUOTED(RUBY_ARCH, "universal-" RUBY_PLATFORM_OS)
+    AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "universal." RUBY_PLATFORM_CPU "-" RUBY_PLATFORM_OS)
+], [
+    arch="${target_cpu}-${target_os}"
+    AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "$arch")
+])
+
+unset sitearch
+AS_CASE(["$target_os"],[mingw*],[sitearch="$target_cpu-$rb_cv_msvcrt"])
+: ${sitearch='${arch}'}
+
+AC_ARG_WITH(search-path,
+		AS_HELP_STRING([--with-search-path=DIR], [specify the additional search path]),
+		[search_path=$withval])
+AS_IF([test "$search_path" != ""], [
+    AC_SUBST(RUBY_SEARCH_PATH, $search_path)
+])
+
+AC_ARG_WITH(rubyhdrdir,
+	    AS_HELP_STRING([--with-rubyhdrdir=DIR], [core headers in DIR [[INCLUDEDIR/RUBY_BASE_NAME-RUBY_VERSION]]]),
+	    [rubyhdrdir=$withval],
+	    [rubyhdrdir='${includedir}/${RUBY_VERSION_NAME}'])
+
+AC_ARG_WITH(rubyarchhdrdir,
+	    AS_HELP_STRING([--with-rubyarchhdrdir=DIR],
+			   [architecture dependent core headers in DIR [[$(rubyhdrdir)/$(arch)]]]),
+	    [rubyarchhdrdir=$withval],
+	    [rubyarchhdrdir=${multiarch+'${archincludedir}/${RUBY_VERSION_NAME}'}${multiarch-'${rubyhdrdir}/${arch}'}])
+
+AC_ARG_WITH(sitehdrdir,
+	    AS_HELP_STRING([--with-sitehdrdir=DIR], [core site headers in DIR [[RUBYHDRDIR/site_ruby]]]),
+	    [sitehdrdir=$withval],
+	    [sitehdrdir='${rubyhdrdir}/site_ruby'])
+
+AC_ARG_WITH(sitearchhdrdir,
+	    AS_HELP_STRING([--with-sitearchhdrdir=DIR],
+			   [architecture dependent core site headers in DIR [[RUBYHDRDIR/site_ruby]]]),
+	    [sitearchhdrdir=$withval],
+	    [sitearchhdrdir=${multiarch+'${sitearchincludedir}/${RUBY_VERSION_NAME}/site_ruby'}${multiarch-'${sitehdrdir}/${sitearch}'}])
+
+AC_ARG_WITH(vendorhdrdir,
+	    AS_HELP_STRING([--with-vendorhdrdir=DIR], [core vendor headers in DIR [[RUBYHDRDIR/vendor_ruby]]]),
+	    [vendorhdrdir=$withval],
+	    [vendorhdrdir='${rubyhdrdir}/vendor_ruby'])
+
+AC_ARG_WITH(vendorarchhdrdir,
+	    AS_HELP_STRING([--with-vendorarchhdrdir=DIR],
+			   [architecture dependent core vendor headers in DIR [[RUBYHDRDIR/vendor_ruby]]]),
+	    [vendorarchhdrdir=$withval],
+	    [vendorarchhdrdir=${multiarch+'${sitearchincludedir}/${RUBY_VERSION_NAME}/vendor_ruby'}${multiarch-'${vendorhdrdir}/${sitearch}'}])
+
+AC_SUBST(rubyhdrdir)dnl
+AC_SUBST(sitehdrdir)dnl
+AC_SUBST(vendorhdrdir)dnl
+AC_SUBST(rubyarchhdrdir)dnl
+AC_SUBST(sitearchhdrdir)dnl
+AC_SUBST(vendorarchhdrdir)dnl
+
+AC_ARG_WITH(mantype,
+	AS_HELP_STRING([--with-mantype=TYPE], [specify man page type; TYPE is one of man and doc]),
+		[
+			AS_CASE(["$withval"],
+			[man|man.gz|man.bz2|doc|doc.gz|doc.bz2], [MANTYPE=$withval],
+			[AC_MSG_ERROR(invalid man type: $withval)])
+		])
+AS_IF([test -z "$MANTYPE"], [
+	dnl Looks for nroff with -mdoc support.
+	AC_CACHE_VAL([ac_cv_path_NROFF], [
+		AC_PATH_PROGS_FEATURE_CHECK([NROFF],
+			[nroff awf mandoc],
+			[$ac_path_NROFF -mdoc ${srcdir}/man/ruby.1 \
+				>/dev/null 2>&1 &&
+				ac_cv_path_NROFF=$ac_path_NROFF \
+				ac_path_NROFF_found=:],
+			[], ["/usr/bin:/usr/ucb"]
+		)
+	])
+	AS_IF([test -n "$ac_cv_path_NROFF"], [
+		MANTYPE=doc
+	], [
+		MANTYPE=man
+	])
+])
+AC_SUBST(MANTYPE)
+
+AC_ARG_ENABLE(rubygems,
+	AS_HELP_STRING([--disable-rubygems], [disable rubygems by default]),
+	[enable_rubygems="$enableval"], [enable_rubygems=yes])
+AS_IF([test x"$enable_rubygems" = xno], [
+    USE_RUBYGEMS=no
+], [
+    USE_RUBYGEMS=yes
+])
+AC_SUBST(USE_RUBYGEMS)
+
+arch_hdrdir="${EXTOUT}/include/${arch}/ruby"
+AS_MKDIR_P("${arch_hdrdir}")
+config_h="${arch_hdrdir}/config.h"
+guard=INCLUDE_RUBY_CONFIG_H
+{
+  echo "#ifndef $guard"
+  echo "#define $guard 1"
+  grep -v "^#define PACKAGE_" confdefs.h
+  echo "#endif /* $guard */"
+} | tr -d '\015' |
+(
+  AS_IF([test "x$CONFIGURE_TTY" = xyes], [color=--color], [color=])
+  exec ${tooldir}/ifchange $color "${config_h}" -
+) >&AS_MESSAGE_FD || AC_MSG_ERROR([failed to create ${config_h}])
+tr -d '\015' < largefile.h > confdefs.h
+rm largefile.h
+
+BUILTIN_ENCS=["`sed -n -e '/^BUILTIN_ENCS[ 	]*=/{' \
+	-e s/// -e :l -e '/\\\\$/N' -e 's/\\\\\\n/ /' -e 't l' -e p \
+	-e '}' "${srcdir}/enc/Makefile.in"`"]
+BUILTIN_ENCOBJS=
+for e in $BUILTIN_ENCS; do BUILTIN_ENCOBJS="$BUILTIN_ENCOBJS "`echo $e | sed 's/\.c$/.$(OBJEXT)/'`; done
+AC_SUBST(BUILTIN_ENCOBJS)
+
+BUILTIN_TRANSES=["`sed -n -e '/^BUILTIN_TRANSES[ 	]*=/{' \
+	-e s/// -e :l -e '/\\\\$/N' -e 's/\\\\\\n/ /' -e 't l' -e p \
+	-e '}' "${srcdir}/enc/Makefile.in"`"]
+BUILTIN_TRANSSRCS=
+BUILTIN_TRANSOBJS=
+for e in $BUILTIN_TRANSES; do
+  BUILTIN_TRANSSRCS="$BUILTIN_TRANSSRCS "`echo $e | sed 's/\.trans$/.c/'`
+  BUILTIN_TRANSOBJS="$BUILTIN_TRANSOBJS "`echo $e | sed 's/\.trans$/.$(OBJEXT)/'`
+done
+AC_SUBST(BUILTIN_TRANSSRCS)
+AC_SUBST(BUILTIN_TRANSOBJS)
+
+PACKAGE=$RUBY_BASE_NAME
+AC_SUBST(PACKAGE)
+AS_MESSAGE([$PACKAGE library version = $ruby_version])
+
+AS_IF([test x"$CC_WRAPPER" != x], [
+    CC='$(CC_WRAPPER) '"${CC@%:@$CC_WRAPPER }"
+    CPP='$(CC_WRAPPER) '"${CPP@%:@$CC_WRAPPER }"
+    CC_WRAPPER='$(rubyarchdir)/darwin-cc'
+    XCC_WRAPPER='$(top_srcdir)/tool/darwin-cc'
+])
+AC_SUBST(CC_WRAPPER, '')
+AC_SUBST(XCC_WRAPPER)
+
+AS_CASE([" $CPP "], [*" $CC "*], [CPP=`echo " $CPP " | sed "s| $CC |"' $(CC) |;s/^ *//;s/  *$//'`])
+
+AS_IF([test x"$firstmf" != x], [
+    AC_CONFIG_FILES($firstmf:$firsttmpl, [], [firstmf="$firstmf" firsttmpl="$firsttmpl"])
+])
+AC_CONFIG_FILES(Makefile:template/Makefile.in, [
+    tmpmk=confmk$$.tmp
+    {
+	AS_IF([test ${VCS+set}], [
+	    :
+	], [git_dir=`$GIT --work-tree="$srcdir" --git-dir="$srcdir/.git" rev-parse --git-dir 2>/dev/null`], [
+	    VCS='$(GIT)'
+	], [
+	    VCS='echo cannot'
+	])
+	AS_CASE("$VCS",
+		['$(GIT)'|git], [VCSUP='$(VCS) pull --rebase $(GITPULLOPTIONS)'],
+		[VCSUP='$(VCS)'])
+	sed -n \
+	    -e '[/^@%:@define \(RUBY_RELEASE_[A-Z]*\) \([0-9][0-9]*\)/]{' \
+	    -e   's//\1 = \2/' \
+	    -e   '[s/ \([0-9]\)$/ 0\1/]' \
+	    -e   p \
+	    -e '}' "$srcdir/version.h"
+	sed '/^MISSING/s/\$U\././g;/^VCS *=/s#@VCS@#'"$VCS"'#;/^VCSUP *=/s#@VCSUP@#'"$VCSUP"'#' Makefile
+	echo; test x"$EXEEXT" = x || echo 'miniruby: miniruby$(EXEEXT)'
+	AS_IF([test "$gnumake" != yes], [
+	    echo ['$(MKFILES): $(srcdir)/common.mk']
+	    sed ['s/{\$([^(){}]*)[^{}]*}//g'] ${srcdir}/common.mk
+	], [
+	    echo 'distclean-local::; @$(RM) GNUmakefile uncommon.mk'
+	])
+    } > $tmpmk && AS_IF([! grep '^ruby:' $tmpmk > /dev/null], [
+	AS_IF([test "${gnumake}" = yes], [
+	    tmpgmk=confgmk$$.tmp
+	    {
+		echo "include $tmpmk"
+		echo "-include uncommon.mk"
+	    } > $tmpgmk
+	], [
+	    tmpgmk=$tmpmk
+	]) &&
+	test -z "`${MAKE-make} -f $tmpgmk info-program | grep '^PROGRAM=ruby$'`" &&
+	echo 'ruby: $(PROGRAM);' >> $tmpmk
+	test "$tmpmk" = "$tmpgmk" || rm -f "$tmpgmk"
+    ]) && mv -f $tmpmk Makefile],
+[EXEEXT='$EXEEXT' MAKE='${MAKE-make}' gnumake='$gnumake' GIT='$GIT'])
+
+AC_ARG_WITH([ruby-pc],
+	    AS_HELP_STRING([--with-ruby-pc=FILENAME], [pc file basename]),
+	    [ruby_pc="$withval"],
+	    [ruby_pc="${RUBY_BASE_NAME}-${MAJOR}.${MINOR}.pc"])
+AC_SUBST(ruby_pc)
+AC_SUBST(exec, [exec])
+
+AC_ARG_WITH(destdir,
+	    AS_HELP_STRING([--with-destdir=DESTDIR], [specify default directory to install]),
+	    [DESTDIR="$withval"])
+AC_SUBST(DESTDIR)
+
+AC_CONFIG_FILES($ruby_pc:template/ruby.pc.in,
+    [
+    AS_IF([sed ['s/\$(\([A-Za-z_][A-Za-z0-9_]*\))/${\1}/g;s/@[A-Za-z_][A-Za-z0-9_]*@//'] $ruby_pc > ruby.tmp.pc &&
+	{
+	    test -z "$PKG_CONFIG" ||
+	    PKG_CONFIG_PATH=. $PKG_CONFIG --print-errors ruby.tmp
+	}],
+    [
+	mv -f ruby.tmp.pc $ruby_pc
+    ], [
+	exit 1
+    ])
+    ],
+    [ruby_pc='$ruby_pc' PKG_CONFIG='$PKG_CONFIG'])
+
+AC_OUTPUT
+}
+}
+
+AS_IF([test "$silent" = yes], [], [
+AS_IF([${FOLD+:} false], [], [
+AS_IF([test "`echo abcdefg hijklmno | fold -s -w10 | sed 1d`" = hijklmno], [FOLD="fold"], [FOLD=])
+])
+fold_width=`expr $COLUMNS - 30 2>/dev/null` || fold_width=50
+AS_REQUIRE_SHELL_FN([config_summary],
+    [AS_FUNCTION_DESCRIBE([config_summary], [NAME, VAL], [configuration summary])],
+    [AS_IF([test -z "$2"], [], [
+	AS_ECHO_N(["   * $1:                     "]) | dd bs=1 count=26 2>/dev/null
+	AS_IF([test "$FOLD"], [
+	    echo "$2" | fold -s -w$fold_width |
+	    sed '1!s/^/                          /;$!s/$/\\/'
+	], [echo "$2"])
+    ])]
+)
+
+AS_IF([test $install_doc = yes],
+    [DOCTARGETS=`echo " $RDOCTARGET $CAPITARGET " | sed 's/ nodoc //g;s/^ *//;s/ *$//'`],
+    [DOCTARGETS=no])
+echo "---"
+echo "Configuration summary for $RUBY_BASE_NAME version $MAJOR.$MINOR.$TEENY"
+echo ""
+config_summary "Installation prefix" "$prefix"
+config_summary "exec prefix"         "$exec_prefix"
+config_summary "arch"                "$arch"
+config_summary "site arch"           "$sitearch"
+config_summary "RUBY_BASE_NAME"      "$RUBY_BASE_NAME"
+config_summary "enable shared"       "$enable_shared"
+config_summary "ruby lib prefix"     "$rubylibprefix"
+config_summary "site libraries path" "$rubysitearchprefix"
+config_summary "vendor path"         "$vendordir"
+config_summary "target OS"           "$target_os"
+config_summary "compiler"            "$CC"
+config_summary "with pthread"        "$enable_pthread"
+config_summary "with coroutine"      "$rb_cv_coroutine"
+config_summary "enable shared libs"  "$ENABLE_SHARED"
+config_summary "dynamic library ext" "$DLEXT"
+config_summary "CFLAGS"              "$cflags"
+config_summary "CPPFLAGS"            "$cppflags"
+config_summary "LDFLAGS"             "$LDFLAGS"
+config_summary "DLDFLAGS"            "$DLDFLAGS"
+config_summary "optflags"            "$optflags"
+config_summary "debugflags"          "$debugflags"
+config_summary "warnflags"           "$warnflags"
+config_summary "strip command"       "$STRIP"
+config_summary "install doc"         "$DOCTARGETS"
+config_summary "JIT support"         "$MJIT_SUPPORT"
+config_summary "man page type"       "$MANTYPE"
+config_summary "search path"         "$search_path"
+config_summary "static-linked-ext"   ${EXTSTATIC:+"yes"}
+config_summary "BASERUBY -v"         "$BASERUBY_VERSION"
+echo ""
+echo "---"
+])
diff --git a/configure.in b/configure.in
deleted file mode 100644
index c98a024562..0000000000
--- a/configure.in
+++ /dev/null