9718 files changed, 72789 insertions, 2135087 deletions

diff --git a/.cvsignore b/.cvsignore
new file mode 100644
index 0000000000..2474526e2a
--- /dev/null
+++ b/.cvsignore
@@ -0,0 +1,18 @@
+Makefile
+parse.c
+newver.rb
+ruby
+miniruby
+README.fat-patch
+config.cache
+config.h
+config.log
+config.status
+Makefile
+ppack
+archive
+*.orig
+*.rej
+*.bak
+*.sav
+*~
diff --git a/.dir-locals.el b/.dir-locals.el
deleted file mode 100644
index 8f4b96445c..0000000000
--- a/.dir-locals.el
+++ /dev/null
@@ -1,39 +0,0 @@
-;; 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
deleted file mode 100644
index 0e0969a6d3..0000000000
--- a/.document
+++ /dev/null
@@ -1,45 +0,0 @@
-# This file determines which files in the
-# Ruby hierarchy will be processed by the RDoc
-# tool when it is given the top-level directory
-# as an argument
-
-# Process all the C source files
-*.c
-*.y
-
-# 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
-
-# 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
deleted file mode 100644
index 4633a7acae..0000000000
--- a/.editorconfig
+++ /dev/null
@@ -1,30 +0,0 @@
-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
deleted file mode 100644
index 714d7bee10..0000000000
--- a/.gdbinit
+++ /dev/null
@@ -1,1346 +0,0 @@
-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 $color_end = "\033[m"
-  end
-  if ruby_dummy_gdb_enums.special_consts
-  end
-end
-
-# set prompt \033[36m(gdb)\033[m\040
-
-define rp
-  ruby_gdb_init
-  if (VALUE)($arg0) & RUBY_FIXNUM_FLAG
-    printf "FIXNUM: %ld\n", (long)($arg0) >> 1
-  else
-  if ((VALUE)($arg0) & ~(~(VALUE)0<<RUBY_SPECIAL_SHIFT)) == RUBY_SYMBOL_FLAG
-    set $id = (($arg0) >> RUBY_SPECIAL_SHIFT)
-    printf "%sSYMBOL%s: ", $color_type, $color_end
-    rp_id $id
-  else
-  if ($arg0) == RUBY_Qfalse
-    echo false\n
-  else
-  if ($arg0) == RUBY_Qtrue
-    echo true\n
-  else
-  if ($arg0) == RUBY_Qnil
-    echo nil\n
-  else
-  if ($arg0) == RUBY_Qundef
-    echo undef\n
-  else
-  if (VALUE)($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
-  if ($flags & RUBY_FL_PROMOTED) == RUBY_FL_PROMOTED
-    printf "[PROMOTED] "
-  end
-  if ($flags & RUBY_T_MASK) == RUBY_T_NONE
-    printf "%sT_NONE%s: ", $color_type, $color_end
-    print (struct RBasic *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_NIL
-    printf "%sT_NIL%s: ", $color_type, $color_end
-    print (struct RBasic *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_OBJECT
-    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 "%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 "%sT_ICLASS%s: ", $color_type, $color_end
-    rp_class $arg0
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_MODULE
-    printf "%sT_MODULE%s: ", $color_type, $color_end
-    rp_class $arg0
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_FLOAT
-    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 "%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 $rsflags = ((struct RBasic*)$regsrc)->flags
-    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 *)(($rsflags & RUBY_FL_USER1) ? \
-	    ((struct RString*)$regsrc)->as.heap.ptr : \
-	    ((struct RString*)$regsrc)->as.ary) @ $len
-    set print address on
-    printf " len:%ld ", $len
-    if $flags & RUBY_FL_USER6
-      printf "(none) "
-    end
-    if $flags & RUBY_FL_USER5
-      printf "(literal) "
-    end
-    if $flags & RUBY_FL_USER4
-      printf "(fixed) "
-    end
-    printf "encoding:%d ", ($flags & RUBY_ENCODING_MASK) >> RUBY_ENCODING_SHIFT
-    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 "%sT_ARRAY%s: len=%ld ", $color_type, $color_end, $len
-      printf "(embed) "
-      if ($len == 0)
-	printf "{(empty)} "
-      else
-	print/x *((VALUE*)((struct RArray*)($arg0))->as.ary) @ $len
-	printf " "
-      end
-    else
-      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*)($arg0))->as.heap.aux.shared_root
-	printf " "
-      else
-	printf "(ownership) capa=%ld ", ((struct RArray*)($arg0))->as.heap.aux.capa
-      end
-      if ($len == 0)
-	printf "{(empty)} "
-      else
-	print/x *((VALUE*)((struct RArray*)($arg0))->as.heap.ptr) @ $len
-	printf " "
-      end
-    end
-    print (struct RArray *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_FIXNUM
-    printf "%sT_FIXNUM%s: ", $color_type, $color_end
-    print (struct RBasic *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_HASH
-    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)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_STRUCT
-    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)
-    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
-    rp_bignum $arg0
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_RATIONAL
-    printf "%sT_RATIONAL%s: ", $color_type, $color_end
-    print (struct RRational *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_COMPLEX
-    printf "%sT_COMPLEX%s: ", $color_type, $color_end
-    print (struct RComplex *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_FILE
-    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 "%sT_TRUE%s: ", $color_type, $color_end
-    print (struct RBasic *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_FALSE
-    printf "%sT_FALSE%s: ", $color_type, $color_end
-    print (struct RBasic *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_DATA
-    if ((struct RTypedData *)($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 "%sT_MATCH%s: ", $color_type, $color_end
-    print (struct RMatch *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_SYMBOL
-    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 "%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 "%sT_NODE%s(", $color_type, $color_end
-    output (enum node_type)(($flags&RUBY_NODE_TYPEMASK)>>RUBY_NODE_TYPESHIFT)
-    printf "): "
-    print *(NODE *)($arg0)
-  else
-  if ($flags & RUBY_T_MASK) == RUBY_T_ZOMBIE
-    printf "%sT_ZOMBIE%s: ", $color_type, $color_end
-    print (struct RData *)($arg0)
-  else
-    printf "%sunknown%s: ", $color_type, $color_end
-    print (struct RBasic *)($arg0)
-  end
-  end
-  end
-  end
-  end
-  end
-  end
-  end
-  end
-  end
-  end
-  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
-  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)
-end
-document nd_type
-  Print a Ruby' node type.
-end
-
-define 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))
-end
-document nd_line
-  Print the source line number of a node.
-end
-
-# Print members of ruby node.
-
-define nd_head
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-define nd_alen
-  printf "%su2.argc%s: ", $color_highlite, $color_end
-  p ($arg0).u2.argc
-end
-
-define nd_next
-  printf "%su3.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.node
-end
-
-
-define nd_cond
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-define nd_body
-  printf "%su2.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u2.node
-end
-
-define nd_else
-  printf "%su3.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.node
-end
-
-
-define nd_orig
-  printf "%su3.value%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.value
-end
-
-
-define nd_resq
-  printf "%su2.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u2.node
-end
-
-define nd_ensr
-  printf "%su3.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.node
-end
-
-
-define nd_1st
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-define nd_2nd
-  printf "%su2.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u2.node
-end
-
-
-define nd_stts
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-
-define nd_entry
-  printf "%su3.entry%s: ", $color_highlite, $color_end
-  p ($arg0).u3.entry
-end
-
-define nd_vid
-  printf "%su1.id%s: ", $color_highlite, $color_end
-  p ($arg0).u1.id
-end
-
-define nd_cflag
-  printf "%su2.id%s: ", $color_highlite, $color_end
-  p ($arg0).u2.id
-end
-
-define nd_cval
-  printf "%su3.value%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.value
-end
-
-define nd_tbl
-  printf "%su1.tbl%s: ", $color_highlite, $color_end
-  p ($arg0).u1.tbl
-end
-
-
-define nd_var
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-define nd_ibdy
-  printf "%su2.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u2.node
-end
-
-define nd_iter
-  printf "%su3.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.node
-end
-
-
-define nd_value
-  printf "%su2.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u2.node
-end
-
-define nd_aid
-  printf "%su3.id%s: ", $color_highlite, $color_end
-  p ($arg0).u3.id
-end
-
-
-define nd_lit
-  printf "%su1.value%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.value
-end
-
-define nd_rest
-  printf "%su2.argc%s: ", $color_highlite, $color_end
-  p ($arg0).u2.argc
-end
-
-define nd_opt
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-
-define nd_recv
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-define nd_mid
-  printf "%su2.id%s: ", $color_highlite, $color_end
-  p ($arg0).u2.id
-end
-
-define nd_args
-  printf "%su3.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.node
-end
-
-define nd_defn
-  printf "%su3.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.node
-end
-
-
-define nd_old
-  printf "%su1.id%s: ", $color_highlite, $color_end
-  p ($arg0).u1.id
-end
-
-define nd_new
-  printf "%su2.id%s: ", $color_highlite, $color_end
-  p ($arg0).u2.id
-end
-
-
-define nd_cname
-  printf "%su1.id%s: ", $color_highlite, $color_end
-  p ($arg0).u1.id
-end
-
-define nd_super
-  printf "%su3.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u3.node
-end
-
-
-define nd_modl
-  printf "%su1.id%s: ", $color_highlite, $color_end
-  p ($arg0).u1.id
-end
-
-define nd_clss
-  printf "%su1.value%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.value
-end
-
-
-define nd_beg
-  printf "%su1.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u1.node
-end
-
-define nd_end
-  printf "%su2.node%s: ", $color_highlite, $color_end
-  rp ($arg0).u2.node
-end
-
-define nd_state
-  printf "%su3.state%s: ", $color_highlite, $color_end
-  p ($arg0).u3.state
-end
-
-define nd_rval
-  printf "%su2.value%s: ", $color_highlite, $color_end
-  rp ($arg0).u2.value
-end
-
-
-define nd_nth
-  printf "%su2.argc%s: ", $color_highlite, $color_end
-  p ($arg0).u2.argc
-end
-
-
-define nd_tag
-  printf "%su1.id%s: ", $color_highlite, $color_end
-  p ($arg0).u1.id
-end
-
-define nd_tval
-  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
-  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
-  # 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
deleted file mode 100644
index d0c2d266b4..0000000000
--- a/.gitattributes
+++ /dev/null
@@ -1,8 +0,0 @@
-*.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
deleted file mode 100644
index 56baa29942..0000000000
--- a/.github/SECURITY.md
+++ /dev/null
@@ -1,9 +0,0 @@
-# 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
deleted file mode 100644
index 7196708b21..0000000000
--- a/.github/codeql/codeql-config.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-name: "CodeQL config for the Ruby language"
-
-paths-ignore:
-  - '/ext/**/*/conftest.c'
diff --git a/.github/workflows/check_branch.yml b/.github/workflows/check_branch.yml
deleted file mode 100644
index 37cf3a9a8f..0000000000
--- a/.github/workflows/check_branch.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-# We bidirectionally synchronize github.com/ruby/ruby.git's master branch and
-# git.ruby-lang.org/ruby.git's master branch.
-# We can use a pull request's merge button only on the master branch.
-#
-# Therefore, we require to pass this "check_branch" on all protected branches
-# to prevent us from accidentally pushing commits to GitHub directly.
-#
-# Details: https://bugs.ruby-lang.org/issues/16094
-name: Pull Request
-on: [pull_request]
-jobs:
-  check_branch:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check if branch is master
-        run: |
-          if [ "$BASE_REF" != master ]; then
-            echo "Only master branch accepts a pull request, but it's '$BASE_REF'."
-            exit 1
-          fi
-        env:
-          BASE_REF: ${{ github.base_ref }}
diff --git a/.github/workflows/check_dependencies.yml b/.github/workflows/check_dependencies.yml
deleted file mode 100644
index b79eacf623..0000000000
--- a/.github/workflows/check_dependencies.yml
+++ /dev/null
@@ -1,57 +0,0 @@
-name: Check Dependencies
-on: [push, pull_request]
-jobs:
-  update-deps:
-    strategy:
-      matrix:
-        os: [ubuntu-20.04]
-      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
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-      - uses: actions/checkout@v2
-        with:
-          path: src
-      - run: ./src/tool/actions-commit-info.sh
-        id: commit_info
-      - 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 $d; done' || :
-      - name: Set ENV
-        run: |
-          echo '::set-env name=JOBS::'-j$((1 + $(nproc --all)))
-      - run: autoconf
-        working-directory: src
-      - name: Run configure
-        run: ./configure -C --disable-install-doc --disable-rubygems --with-gcc 'optflags=-O0' 'debugflags=-save-temps=obj -g'
-        working-directory: src
-      - name: Run make
-        run: make all golf
-        working-directory: src
-      - run: ruby tool/update-deps --fix
-        working-directory: src
-      - run: git diff --no-ext-diff --ignore-submodules --exit-code
-        working-directory: src
-      - uses: k0kubun/action-slack@v2.0.0
-        with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ 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_encoding.yml b/.github/workflows/check_encoding.yml
deleted file mode 100644
index 7b0d60bf67..0000000000
--- a/.github/workflows/check_encoding.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-name: Check C-source encoding
-on: [push, pull_request]
-
-jobs:
-  check_encoding:
-    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]
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
deleted file mode 100644
index 9fbabd35c6..0000000000
--- a/.github/workflows/codeql-analysis.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-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
deleted file mode 100644
index 7edec28da9..0000000000
--- a/.github/workflows/compilers.yml
+++ /dev/null
@@ -1,222 +0,0 @@
-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-mathn,        value: '--disable-mathn' }
-          - { 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: ${{ matrix.entry.name }}
-    runs-on: ubuntu-latest
-    container: ghcr.io/ruby/ruby-ci-image:latest
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-    steps:
-      - name: setenv
-        run: |
-          echo ::set-env name=${{ matrix.entry.key }}::${{ matrix.entry.value }}
-          echo ::set-env name=make::make -sj$((1 + $(nproc --all)))
-      - run: mkdir build
-      - uses: actions/checkout@v2
-        with:
-          path: src
-      - run: autoconf
-        working-directory: src
-      - name: Run configure
-        working-directory: build
-        run: |
-          if [ -n "${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
-        working-directory: build
-      - run: $make incs
-        working-directory: build
-      - run: $make
-        working-directory: build
-      - run: $make test
-        working-directory: build
-      - run: $make install
-        working-directory: build
-        if: "matrix.entry.name == '-O3'"
-      - run: /usr/local/bin/gem install --no-doc timezone tzinfo
-        working-directory: build
-        if: "matrix.entry.name == '-O3'"
-      - run: $make test-tool
-        working-directory: build
-        if: "matrix.entry.name == '-O3'"
-      - run: $make test-all TESTS='-- ruby -ext-'
-        working-directory: build
-        if: "matrix.entry.name == '-O3'"
-      - run: $make test-spec
-        working-directory: build
-        if: "matrix.entry.name == '-O3'"
-
-      - uses: k0kubun/action-slack@v2.0.0
-        with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ 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'
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
deleted file mode 100644
index 79264fd97c..0000000000
--- a/.github/workflows/macos.yml
+++ /dev/null
@@ -1,67 +0,0 @@
-name: macOS
-on: [push, pull_request]
-jobs:
-  make:
-    runs-on: macos-latest
-    strategy:
-      matrix:
-        test_task: [ "check", "test-bundler-parallel", "test-bundled-gems", "leaked-globals" ]
-      fail-fast: false
-    env:
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-    steps:
-      - name: Disable Firewall
-        run: |
-          sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate off
-          sudo /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-      - uses: actions/checkout@v2
-        with:
-          path: src
-      - run: ./src/tool/actions-commit-info.sh
-        id: commit_info
-      - name: Install libraries
-        run: |
-          export WAITS='5 60'
-          tool/travis_retry.sh brew upgrade
-          tool/travis_retry.sh brew install gdbm gmp libffi openssl@1.1 zlib autoconf automake libtool readline
-        working-directory: src
-      - name: Set ENV
-        run: |
-          echo '::set-env name=JOBS::'-j$((1 + $(sysctl -n hw.activecpu)))
-      - run: autoconf
-        working-directory: src
-      - run: mkdir build
-      - name: Run configure
-        run: ../src/configure -C --disable-install-doc --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline)
-        working-directory: build
-      - run: make $JOBS incs
-        working-directory: build
-      - run: make $JOBS
-        working-directory: build
-      - run: make prepare-gems
-        working-directory: build
-        if: matrix.test_task == 'check'
-      - run: make $JOBS -s ${{ matrix.test_task }}
-        timeout-minutes: 60
-        working-directory: build
-        env:
-          RUBY_TESTOPTS: "-q --tty=no"
-          # Remove minitest from TEST_BUNDLED_GEMS_ALLOW_FAILURES if https://github.com/seattlerb/minitest/pull/798 is resolved
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: "rexml"
-      - uses: k0kubun/action-slack@v2.0.0
-        with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ 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'
diff --git a/.github/workflows/mingw.yml b/.github/workflows/mingw.yml
deleted file mode 100644
index 9726c69cd8..0000000000
--- a/.github/workflows/mingw.yml
+++ /dev/null
@@ -1,144 +0,0 @@
-name: MinGW
-on: [push, pull_request]
-
-# Notes:
-# Actions console encoding causes issues, see test-all & test-spec steps
-#
-jobs:
-  make:
-    runs-on: windows-2019
-    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:
-      - 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
-      - run: ./src/tool/actions-commit-info.sh
-        shell: bash
-        id: commit_info
-      - name: Set up Ruby & MSYS2
-        uses: MSP-Greg/setup-ruby-pkgs@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: misc setup, autoreconf
-        run: |
-          mkdir build
-          mkdir install
-          mkdir temp
-          cd src
-          sh -c "autoreconf -fi"
-
-      - name: configure
-        working-directory: build
-        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=/install $config_args"
-          # Write-Host "-------------------------------------- config.log"
-          # Get-Content ./config.log | foreach {Write-Output $_}
-
-      - name: update
-        working-directory: build
-        run: |
-          $jobs = [int](2 * $env:NUMBER_OF_PROCESSORS)
-          make -j $jobs incs
-
-      - name: download gems
-        working-directory: build
-        run: |
-          $jobs = [int](2 * $env:NUMBER_OF_PROCESSORS)
-          make -j $jobs update-gems
-
-      - name: make all
-        timeout-minutes: 40
-        working-directory: build
-        run: |
-          $jobs = [int](2 * $env:NUMBER_OF_PROCESSORS)
-          make -j $jobs
-
-      - name: make install
-        working-directory: build
-        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-nodoc
-
-      - name: test
-        timeout-minutes: 5
-        working-directory: build
-        run: |
-          make test
-
-      - name: test-all
-        timeout-minutes: 60
-        working-directory: build
-        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)
-          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
-          $PSDefaultParameterValues['*:Encoding'] = 'utf8'
-          [Console]::OutputEncoding = [System.Text.Encoding]::GetEncoding("IBM437")
-          [Console]::InputEncoding  = [System.Text.Encoding]::GetEncoding("IBM437")
-          ruby -v
-          ruby ../mspec/bin/mspec -j
-
-      - uses: k0kubun/action-slack@v2.0.0
-        with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ 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'
diff --git a/.github/workflows/mjit.yml b/.github/workflows/mjit.yml
deleted file mode 100644
index 9763c8b041..0000000000
--- a/.github/workflows/mjit.yml
+++ /dev/null
@@ -1,71 +0,0 @@
-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 }}'
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
-    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: git config
-        run: |
-          git config --global advice.detachedHead 0
-      - uses: actions/checkout@v2
-        with:
-          path: src
-      - run: ./src/tool/actions-commit-info.sh
-        id: commit_info
-      - 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 $d; done' || :
-      - name: Set ENV
-        run: |
-          echo '::set-env name=JOBS::'-j$((1 + $(nproc --all)))
-      - run: autoconf
-        working-directory: src
-      - run: mkdir build
-      - name: Run configure
-        run: ../src/configure -C --disable-install-doc
-        working-directory: build
-      - run: make $JOBS incs
-        working-directory: build
-      - run: make $JOBS
-        working-directory: build
-      - run: sudo make $JOBS -s install
-        working-directory: build
-      - run: make $JOBS -s test RUN_OPTS="$RUN_OPTS"
-        timeout-minutes: 10
-        working-directory: build
-      - run: make $JOBS -s test-all RUN_OPTS="$RUN_OPTS"
-        timeout-minutes: 10
-        working-directory: build
-      - run: make $JOBS -s test-spec RUN_OPTS="$RUN_OPTS"
-        timeout-minutes: 5
-        working-directory: build
-      - 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'
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
deleted file mode 100644
index c69f73ed91..0000000000
--- a/.github/workflows/ubuntu.yml
+++ /dev/null
@@ -1,90 +0,0 @@
-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", "leaked-globals" ]
-        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
-          - test_task: leaked-globals
-            os: ubuntu-16.04
-          - os: ubuntu-16.04
-            debug: -DRUBY_DEBUG
-          - test_task: "test-all TESTS=--repeat-count=2"
-            debug: -DRUBY_DEBUG
-          - test_task: leaked-globals
-            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:
-      - 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
-      - run: ./src/tool/actions-commit-info.sh
-        id: commit_info
-      - 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 $d; done' || :
-      - name: Set ENV
-        run: |
-          echo '::set-env name=JOBS::'-j$((1 + $(nproc --all)))
-      - run: autoconf
-        working-directory: src
-      - run: mkdir build
-      - name: Run configure
-        run: ../src/configure -C --disable-install-doc cppflags=${{ matrix.debug }}
-        working-directory: build
-      - run: make $JOBS incs
-        working-directory: build
-      - run: make $JOBS
-        working-directory: build
-      - run: make prepare-gems
-        working-directory: build
-        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)")}'
-        working-directory: build
-        if: matrix.test_task == 'check'
-      - run: make $JOBS -s ${{ matrix.test_task }}
-        timeout-minutes: 30
-        working-directory: build
-        env:
-          RUBY_TESTOPTS: "-q --tty=no"
-          # Remove minitest from TEST_BUNDLED_GEMS_ALLOW_FAILURES if https://github.com/seattlerb/minitest/pull/798 is resolved
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ""
-      - uses: k0kubun/action-slack@v2.0.0
-        with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ 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'
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
deleted file mode 100644
index 2dff4c7369..0000000000
--- a/.github/workflows/windows.yml
+++ /dev/null
@@ -1,83 +0,0 @@
-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}}
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-    steps:
-      - 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
-      - run: ./src/tool/actions-commit-info.sh
-        shell: bash
-        id: commit_info
-      - run: md build
-        shell: cmd
-      - name: Configure
-        run: |
-          call "C:\Program Files (x86)\Microsoft Visual Studio\${{ matrix.vs }}\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
-          ../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"
-        working-directory: build
-        shell: cmd
-      - name: nmake
-        run: |
-          call "C:\Program Files (x86)\Microsoft Visual Studio\${{ matrix.vs }}\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
-          set YACC=win_bison
-          echo on
-          nmake incs
-          nmake extract-extlibs
-          nmake
-        working-directory: build
-        shell: cmd
-      - name: nmake test
-        timeout-minutes: 30
-        run: |
-          call "C:\Program Files (x86)\Microsoft Visual Studio\${{ matrix.vs }}\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
-          nmake ${{ matrix.test_task }}
-        working-directory: build
-        shell: cmd
-      - uses: k0kubun/action-slack@v2.0.0
-        with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ 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'
diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index c79485a0b5..0000000000
--- a/.gitignore
+++ /dev/null
@@ -1,229 +0,0 @@
-*-*-*.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
-*.yarb
-*~
-.*.list
-.*.time
-.DS_Store
-.bundle
-.ccmalloc
-.ext
-.pc
-.ppack
-.svn
-.time
-.ruby-version
-Makefile
-cygruby*.def
-extconf.h
-y.output
-y.tab.c
-*.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
-/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
deleted file mode 100644
index aaff198a32..0000000000
--- a/.rspec_parallel
+++ /dev/null
@@ -1,2 +0,0 @@
---format progress
---format ParallelTests::RSpec::RuntimeLogger --out tmp/parallel_runtime_rspec.log
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 94aaf70f31..0000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,541 +0,0 @@
-# -*- 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:
-
-  - &cron-only
-    if: (type = cron) AND (branch = master) AND (fork = false)
-
-  - &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 $travis_apt_get_options install
-        ccache
-        gcc-8
-        g++-8
-        libffi-dev
-        libgdbm-dev
-        libgmp-dev
-        libjemalloc-dev
-        libncurses5-dev
-        libncursesw5-dev
-        libreadline6-dev
-        libssl-dev
-        libyaml-dev
-        openssl
-        valgrind
-        zlib1g-dev
-
-  - &clang-8
-    compiler: clang-8
-    addons:
-      apt:
-        # Not doing this manually unlike other sources, because it has been stable.
-        sources:
-          - llvm-toolchain-xenial-8
-        config:
-          retries: true
-    before_install:
-      - tool/travis_retry.sh sudo bash -c "rm -rf '${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
-        libgmp-dev
-        libjemalloc-dev
-        libncurses5-dev
-        libncursesw5-dev
-        libreadline6-dev
-        libssl-dev
-        libyaml-dev
-        openssl
-        valgrind
-        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
-
-  - &jemalloc
-    name: --with-jemalloc
-    <<: *gcc-8
-    <<: *cron-only
-    env:
-      - CONFIG_FLAG='--with-gmp --with-jemalloc --with-valgrind'
-
-  - &assertions
-    name: RUBY_DEBUG=1
-    <<: *gcc-8
-    #<<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - cppflags='-DRUBY_DEBUG -DVM_CHECK_MODE=1 -DTRANSIENT_HEAP_CHECK_MODE -DRGENGC_CHECK_MODE -DENC_DEBUG'
-
-  - &VM_CHECK_MODE
-    name: VM_CHECK_MODE=3
-    <<: *gcc-8
-    <<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - cppflags=-DVM_CHECK_MODE=0x0003
-
-  - &SUPPORT_JOKE
-    name: SUPPORT_JOKE
-    <<: *gcc-8
-    <<: *cron-only
-    <<: *make-test-only
-    env:
-      - BEFORE_INSTALL="sed vm_opts.h -e 's/OPT_SUPPORT_JOKE *0/OPT_SUPPORT_JOKE 1/' -i"
-
-  - &CPDEBUG
-    name: CPDEBUG
-    <<: *gcc-8
-    <<: *cron-only
-    <<: *make-test-only
-    env:
-      - cppflags=-DCPDEBUG
-
-  - &WITH_COROUTINE_UCONTEXT
-    name: COROUTINE=ucontext
-    <<: *gcc-8
-    <<: *cron-only
-    env:
-      - CONFIG_FLAG='--with-coroutine=ucontext'
-
-  - &WITH_COROUTINE_COPY
-    name: COROUTINE=copy
-    <<: *gcc-8
-    <<: *cron-only
-    env:
-      - CONFIG_FLAG='--with-coroutine=copy'
-
-  - &TOKEN_THREADED_CODE
-    name: TOKEN_THREADED_CODE
-    <<: *gcc-8
-    <<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - cppflags=-DOPT_THREADED_CODE=1
-
-  - &CALL_THREADED_CODE
-    name: CALL_THREADED_CODE
-    <<: *gcc-8
-    <<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - cppflags=-DOPT_THREADED_CODE=2
-
-  - &NO_THREADED_CODE
-    name: NO_THREADED_CODE
-    <<: *gcc-8
-    <<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - cppflags=-DOPT_THREADED_CODE=3
-
-  - &ASAN
-    name: -fsanitize=address
-    <<: *clang-8
-    #<<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - ASAN_OPTIONS=detect_leaks=0
-      - cflags='-U_FORTIFY_SOURCE -march=native -fsanitize=address -fno-omit-frame-pointer -fPIC'
-      - debugflags=-ggdb3
-      - optflags=-O1
-      - LD=clang-8
-      - LDFLAGS='-fsanitize=address -fPIC'
-      - CONFIG_FLAG='--with-out-ext=openssl --without-gmp --without-jemalloc --without-valgrind'
-
-  - &MSAN
-    name: -fsanitize=memory
-    <<: *clang-8
-    #<<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - cflags='-U_FORTIFY_SOURCE -fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -fPIC'
-      - optflags=-O1
-      - LD=clang-8
-      - LDFLAGS='-fsanitize=memory -fPIC'
-      - CONFIG_FLAG='--with-out-ext=openssl --without-gmp --without-jemalloc --without-valgrind'
-
-  - &UBSAN
-    name: -fsanitize=undefined
-    <<: *clang-8
-    #<<: *cron-only
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - cflags='-U_FORTIFY_SOURCE -fsanitize=undefined,integer,nullability -fno-sanitize=implicit-integer-sign-change,unsigned-integer-overflow'
-      - cppflags=-DUNALIGNED_WORD_ACCESS=0
-      - debugflags=-ggdb3
-      - optflags='-O1 -march=native'
-      - LD=clang-8
-      - LDFLAGS='-fsanitize=undefined,integer,nullability -fno-sanitize=implicit-integer-sign-change,unsigned-integer-overflow'
-
-  - &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
-
-  - &pedanticism
-    name: -std=c99 -pedantic
-    compiler: clang
-    <<: *make-test-only
-    env:
-      - GEMS_FOR_TEST=
-      - GCC_FLAGS='-std=c99 -Werror=pedantic -pedantic-errors'
-      - CONFIG_FLAG=
-      - JOBS=
-      - >-
-        warnflags='
-        -Wall
-        -Wextra
-        -Werror=deprecated-declarations
-        -Werror=division-by-zero
-        -Werror=extra-tokens
-        -Werror=implicit-function-declaration
-        -Werror=implicit-int
-        -Werror=pointer-arith
-        -Werror=shorten-64-to-32
-        -Werror=write-strings
-        -Wmissing-noreturn
-        -Wno-constant-logical-operand
-        -Wno-missing-field-initializers
-        -Wno-overlength-strings
-        -Wno-parentheses-equality
-        -Wno-self-assign
-        -Wno-tautological-compare
-        -Wno-unused-local-typedef
-        -Wno-unused-parameter
-        -Wunused-variable'
-      - LDFLAGS=-Wno-unused-command-line-argument
-
-  - &spec-on-old-ruby
-    language: ruby
-    before_install:
-    install:
-    before_script: chmod -R u+w spec/ruby
-    # -j randomly hangs.
-    script: ruby -C spec/ruby ../mspec/bin/mspec .
-
-  - &rubyspec25
-    name: Check ruby/spec version guards on Ruby 2.5
-    rvm: 2.5.7
-    <<: *spec-on-old-ruby
-    after_failure:
-      - echo "ruby/spec failed on Ruby 2.5. This is likely because of a missing ruby_version_is guard, please add it. See spec/README.md."
-
-  - &rubyspec27
-    name: Check ruby/spec version guards on Ruby 2.7
-    rvm: 2.7.0
-    <<: *spec-on-old-ruby
-    after_failure:
-      - echo "ruby/spec failed on Ruby 2.7. This is likely because of a missing ruby_version_is guard, please add it. See spec/README.md."
-
-  - &baseruby
-    name: "BASERUBY: Ruby 2.2"
-    <<: *gcc-8
-    <<: *make-test-only
-    language: ruby
-    rvm: 2.2
-
-  - &dependency
-    name: Check dependencies in makefiles
-    language: ruby
-    before_install:
-    install:
-    before_script:
-      - |-
-        ruby -e 'new = []
-          Dir.glob("ext/**/extconf.rb") {|ex|
-            unless File.exist?(dep = File.dirname(ex)+"/depend")
-              puts "Adding "+dep
-              File.copy_stream("template/depend.tmpl", dep)
-              new << dep
-            end
-          }
-          exec("git", "add", *new) unless new.empty?'
-      - git diff --cached
-      - "> config.status"
-      - "> .rbconfig.time"
-      - sed -f tool/prereq.status template/Makefile.in common.mk > Makefile
-      - make touch-unicode-files
-      - make -s $JOBS $UPDATE_UNICODE -o update-src up
-      - make -s $JOBS srcs
-      - rm -f config.status Makefile rbconfig.rb .rbconfig.time
-      - $SETARCH ./configure -C --disable-install-doc --prefix=$RUBY_PREFIX --disable-rubygems --with-gcc 'optflags=-O0' 'debugflags=-save-temps=obj -g'
-      - ruby tool/update-deps --fix
-    script:
-      - git diff --no-ext-diff --ignore-submodules --exit-code
-    after_failure:
-      - echo "Dependencies need to update"
-    env:
-      - CONFIG_FLAG=
-
-matrix:
-  include:
-    # Build every commit:
-    - <<: *x86_64-linux
-    - <<: *i686-linux
-    - <<: *pedanticism
-    - <<: *assertions
-    - <<: *baseruby
-    - <<: *rubyspec25
-    - <<: *rubyspec27
-    - <<: *dependency
-    # Build every commit (Allowed Failures):
-    - <<: *arm32-linux
-    - <<: *arm64-linux
-    - <<: *s390x-linux
-    - <<: *ASAN
-    - <<: *MSAN
-    - <<: *UBSAN
-    # Cron only:
-    - <<: *jemalloc
-    - <<: *VM_CHECK_MODE
-    - <<: *SUPPORT_JOKE
-    - <<: *CPDEBUG
-    - <<: *WITH_COROUTINE_UCONTEXT
-    - <<: *WITH_COROUTINE_COPY
-    - <<: *TOKEN_THREADED_CODE
-    - <<: *CALL_THREADED_CODE
-    - <<: *NO_THREADED_CODE
-  allow_failures:
-    - name: arm32-linux
-    - name: arm64-linux
-    - name: s390x-linux
-    - name: -fsanitize=address
-    - name: -fsanitize=memory
-  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
deleted file mode 100644
index 66d93598aa..0000000000
--- a/BSDL
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index ffdf2dd4b8..0000000000
--- a/CONTRIBUTING.md
+++ /dev/null
@@ -1,4 +0,0 @@
-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 48e5a96de7..3c68f02bb4 100644
--- a/COPYING
+++ b/COPYING
@@ -1,56 +1,248 @@
-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
-2-clause BSDL (see the file BSDL), or the conditions below:
+		    GNU GENERAL PUBLIC LICENSE
+		     Version 1, February 1989
 
-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.
+ Copyright (C) 1989 Free Software Foundation, Inc.
+                    675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-2. You may modify your copy of the software in any way, provided that
-   you do at least ONE of the following:
+			    Preamble
 
-   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.
+  The license agreements of most software companies try to keep users
+at the mercy of those companies.  By contrast, our General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  The
+General Public License applies to the Free Software Foundation's
+software and to any other program whose authors commit to using it.
+You can use it for your programs, too.
 
-   b. use the modified software only within your corporation or
-      organization.
+  When we speak of free software, we are referring to freedom, not
+price.  Specifically, the General Public License is designed to make
+sure that you have the freedom to give away or sell copies of free
+software, that you receive source code or can get it if you want it,
+that you can change the software or use pieces of it in new free
+programs; and that you know you can do these things.
 
-   c. give non-standard binaries non-standard names, with
-      instructions on where to get the original software distribution.
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
 
-   d. make other distribution arrangements with the author.
+  For example, if you distribute copies of a such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must tell them their rights.
 
-3. You may distribute the software in object code or binary form,
-   provided that you do at least ONE of the following:
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
 
-   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.
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
 
-   b. accompany the distribution with the machine-readable source of
-      the software.
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
-   c. give non-standard binaries non-standard names, with
-      instructions on where to get the original software distribution.
+  0. This License Agreement applies to any program or other work which
+contains a notice placed by the copyright holder saying it may be
+distributed under the terms of this General Public License.  The
+"Program", below, refers to any such program or work, and a "work based
+on the Program" means either the Program or any work containing the
+Program or a portion of it, either verbatim or with modifications.  Each
+licensee is addressed as "you".
 
-   d. make other distribution arrangements with the author.
+  1. You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice and
+disclaimer of warranty; keep intact all the notices that refer to this
+General Public License and to the absence of any warranty; and give any
+other recipients of the Program a copy of this General Public License
+along with the Program.  You may charge a fee for the physical act of
+transferring a copy.
 
-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.
+  2. You may modify your copy or copies of the Program or any portion of
+it, and copy and distribute such modifications under the terms of Paragraph
+1 above, provided that you also do the following:
 
-   For the list of those files and their copying conditions, see the
-   file LEGAL.
+    a) cause the modified files to carry prominent notices stating that
+    you changed the files and the date of any change; and
 
-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.
+    b) cause the whole of any work that you distribute or publish, that
+    in whole or in part contains the Program or any part thereof, either
+    with or without modifications, to be licensed at no charge to all
+    third parties under the terms of this General Public License (except
+    that you may choose to grant warranty protection to some or all
+    third parties, at your option).
 
-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.
+    c) If the modified program normally reads commands interactively when
+    run, you must cause it, when started running for such interactive use
+    in the simplest and most usual way, to print or display an
+    announcement including an appropriate copyright notice and a notice
+    that there is no warranty (or else, saying that you provide a
+    warranty) and that users may redistribute the program under these
+    conditions, and telling the user how to view a copy of this General
+    Public License.
+
+    d) You may charge a fee for the physical act of transferring a
+    copy, and you may at your option offer warranty protection in
+    exchange for a fee.
+
+Mere aggregation of another independent work with the Program (or its
+derivative) on a volume of a storage or distribution medium does not bring
+the other work under the scope of these terms.
+
+  3. You may copy and distribute the Program (or a portion or derivative of
+it, under Paragraph 2) in object code or executable form under the terms of
+Paragraphs 1 and 2 above provided that you also do one of the following:
+
+    a) accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of
+    Paragraphs 1 and 2 above; or,
+
+    b) accompany it with a written offer, valid for at least three
+    years, to give any third party free (except for a nominal charge
+    for the cost of distribution) a complete machine-readable copy of the
+    corresponding source code, to be distributed under the terms of
+    Paragraphs 1 and 2 above; or,
+
+    c) accompany it with the information you received as to where the
+    corresponding source code may be obtained.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form alone.)
+
+Source code for a work means the preferred form of the work for making
+modifications to it.  For an executable file, complete source code means
+all the source code for all modules it contains; but, as a special
+exception, it need not include source code for modules which are standard
+libraries that accompany the operating system on which the executable
+file runs, or for standard header files or definitions files that
+accompany that operating system.
+
+  4. You may not copy, modify, sublicense, distribute or transfer the
+Program except as expressly provided under this General Public License.
+Any attempt otherwise to copy, modify, sublicense, distribute or transfer
+the Program is void, and will automatically terminate your rights to use
+the Program under this License.  However, parties who have received
+copies, or rights to use copies, from you under this General Public
+License will not have their licenses terminated so long as such parties
+remain in full compliance.
+
+  5. By copying, distributing or modifying the Program (or any work based
+on the Program) you indicate your acceptance of this license to do so,
+and all its terms and conditions.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the original
+licensor to copy, distribute or modify the Program subject to these
+terms and conditions.  You may not impose any further restrictions on the
+recipients' exercise of the rights granted herein.
+
+  7. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of the license which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+the license, you may choose any version ever published by the Free Software
+Foundation.
+
+  8. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+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
+
+  9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+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
+
+	Appendix: 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 humanity, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+  To do so, attach the following notices to the program.  It is safest to
+attach them to the start of each source file to most effectively convey
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19xx name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the
+appropriate parts of the General Public License.  Of course, the
+commands you use may be called something other than `show w' and `show
+c'; they could even be mouse-clicks or menu items--whatever suits your
+program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  program `Gnomovision' (a program to direct compilers to make passes
+  at assemblers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+That's all there is to it!
diff --git a/COPYING.ja b/COPYING.ja
deleted file mode 100644
index 230376bc60..0000000000
--- a/COPYING.ja
+++ /dev/null
@@ -1,51 +0,0 @@
-本プログラム�フリーソフトウェア��．2-clause BSDL
-���以下�示��件�本プログラムを��布����
-2-clause BSDL�����BSDLファイルを�照��下��．
-
-1. 複製�制���自由��．
-
-2. 以下��件���れ�を満��時�本プログラム�ソースを
-   自由�変更����．
-
-   a.  �ットニューズ��スト��り，作者�変更を�付�る
-       ���方法�，変更を公開�る．
-
-   b.  変更��本プログラムを自分�所属�る組織内部���
-       使�．
-
-   c.  変更点を明示����，ソフトウェア���を変更�る．
-       ��ソフトウェアを�布�る時��変更��本プログラ
-       ムも�時��布�る．���変更��本プログラム�ソー
-       ス�入手法を明示�る．
-
-   d.  ��他�変更�件を作者����る．
-
-3. 以下��件���れ�を満��時�本プログラムをコンパイ
-   ル��オブジェクトコードや実行形��も�布����．
-
-   a.  �イナリを�����人�ソースを入手��るよ��，
-       ソース�入手法を明示�る．
-
-   b.  機械�読�ソースコードを添付�る．
-
-   c.  変更を行���イナリ���を変更����，オリジナ
-       ル�ソースコード�入手法を明示�る．
-
-   d.  ��他��布�件を作者����る．
-
-4. 他�プログラム��引用����る目的��れ自由��．�
-   ��，本プログラム���れる他�作者�よるコード�，�
-   れ�れ�作者����よる制��加�られる場���り��．
-
-   �れらファイル�一覧��れ�れ��布�件���付���
-   LEGALファイルを�照������．
-
-5. 本プログラム��入力��るスクリプト�よ�，本プログラ
-   ム�ら�出力�権利�本プログラム�作者����，�れ�
-   れ�入出力を生���人�属���．��，本プログラム�
-   組�込�れる���拡張ライブラリ����も�様��．
-
-6. 本プログラム�無�証��．作者�本プログラムをサ�ート
-   �る�志��り���，プログラム自身��グ�る��本プ
-   ログラム�実行���ら発生�る���る�害�対��も責
-   任を����ん．
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000000..9f90111d42
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,1777 @@
+Tue Apr 28 15:27:58 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_16.
+
+Tue Apr 28 00:07:38 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (obj_is_proc): type check predicate.
+
+	* eval.c (obj_is_block): ditto.
+
+Mon Apr 27 16:59:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/gtk/gtk.c (Init_gtk): use timeout, not idle to avoid
+	  comsuming CPU too much.
+
+	* lib/tk.rb: use tcltklib#_invoke instead of `_eval'.
+
+Mon Apr 27 16:59:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* array.c (ary_sort): use dup, not clone.
+
+Mon Apr 27 13:46:27 1998  Tadahiro Maebashi  <maebashi@iij.ad.jp>
+
+	* ext/tcltklib/tcltklib.c (ip_invoke): invoke tcl command
+	  directly.  need not worry about escaping tcl characters.
+
+Mon Apr 27 12:04:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* random.c (f_rand): do not call srand() implicitly.
+
+Fri Apr 24 14:35:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_15.
+
+	* parse.y (assignable): dyna_var_asgn actually defines nested
+	  local variables in outer context.
+
+	* random.c (f_rand): call srand(), if it has not called yet.
+
+	* random.c (f_srand): use tv_usec as the default seed.
+
+	* eval.c (rb_eval): values of nested local variables should be
+ 	  independent.
+
+	* eval.c (rb_yield_0): local variables wrong nested conditions.
+
+Wed Apr 22 23:27:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (select_get_io): get IO object by `to_io'.
+
+	* io.c (io_to_io): method to retrieve IO object, from delegating
+ 	  object for example.
+
+Wed Apr 22 16:52:37 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_14.
+
+	* string.c (str_modify): check for embedded pointer reference.
+
+	* gc.c (obj_free): ditto.
+
+	* pack.c (pack_pack): p/P template to embed pointers.
+
+Wed Apr 22 00:07:10 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* array.c (ary_rindex): embarrassing typo.
+
+Tue Apr 21 12:31:48 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_13.
+
+	* configure.in (RUBY_LIB): supports --program-{prefix,suffix}.
+
+	* array.c (ary_rindex): new method.
+
+	* io.c (io_binmode): should return self.
+
+Tue Apr 21 08:23:04 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* parse.y (here_document): calling parse_string with wrong
+	  arguments.
+
+	* struct.c (struct_aset): problem member assignment with name.
+
+Mon Apr 20 14:47:49 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_12.
+
+	* time.c (time_arg): args may be string (support for reduced
+	  implicit type conversion).
+
+	* lib/base64.rb: changed to use pack/unpack with `m' template.
+
+Mon Apr 20 06:23:20 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* variable.c (mod_remove_const): new method.
+
+Sat Apr 18 03:53:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* hash.c (hash_each_with_index): removed.  use Enumerable's
+	  each_with_index instead.
+
+	* class.c (rb_include_module): check for super modules, since
+ 	  module's included modules may be changed.
+
+Fri Apr 17 21:50:47 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* marshal.c (r_long): r_byte() may return signed byte.
+
+Fri Apr 17 11:58:30 1998  NAGAI Hidetoshi  <nagai@dumbo.ai.kyutech.ac.jp>
+
+	* ext/tcltklib/tcltklib.c (lib_mainloop): thread and interrupt check.
+
+Fri Apr 17 11:06:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (find_file): try to fopen() to check whether file exists.
+
+	* ruby.c (load_file): ditto.
+
+	* struct.c (struct_aset): struct member can be set by member name.
+
+Fri Apr 17 00:47:19 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ext/extmk.rb.in: added m68k-human support
+
+	* file.c (LOCK_SH): defines moved.
+
+	* array.c (ary_flatten_bang): simplified loop.
+
+Thu Apr 16 16:52:01 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_11.
+
+	* lib/tk.rb: thread support (experimental - maybe slow).
+
+	* eval.c (rb_longjmp): trace event on exception in raising
+ 	  context, just before raising exception.
+
+	* struct.c (struct_s_members): forgot to check singletons.
+
+	* struct.c (struct_aref): members can be accessed by names too.
+
+	* array.c (ary_flatten): new method.
+
+	* eval.c (rb_longjmp): prints exception information with `-d'.
+
+	* object.c (any_to_s): remove class name restriction.
+
+Thu Apr 16 01:38:02 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* file.c (thread_flock): do not block other threads.
+
+	* eval.c (thread_trap_eval): signals are now delivered to the
+ 	  current thread again.  In case that the current thread is dead,
+ 	  signals are forwarded to the main thread.
+
+	* string.c (str_new4): need not to duplicate frozen strings.
+
+Wed Apr 15 08:33:47 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* struct.c (struct_inspect): remove restriction for struct names.
+
+Wed Apr 15 02:55:02 1998  Kazuya 'Sharl' Masuda  <sharl@www.ufo.co.jp>
+
+	* x68 patches to config.sub, ext/extmk.rb.in
+
+Wed Apr 15 01:22:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_dup_frozen): do not duplicate frozen strings.
+
+	* parse.y (yylex): allow nested parenthesises.
+
+	* io.c (obj_displayln): prints newline after `display'ing the
+	  receiver.
+
+	* io.c (io_puts): avoid generating "\n" each time.  use RS_default
+ 	  instead.
+
+	* io.c (f_p): ditto.
+
+Tue Apr 14 22:18:17 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* struct.c (struct_aref): should not subtract negative index.
+
+Tue Apr 14 11:34:50 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_10.
+
+	* parse.y: token names prefixed by `t'.
+
+	* struct.c (struct_s_def): supports subclassing of Struct.
+
+	* io.c (io_s_new): supports subclassing of IO.
+
+Mon Apr 13 11:07:39 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (f_binding): need to restore method name.
+
+	* eval.c (rb_call0): raises SystemStackError, not Fatal.
+
+	* io.c (obj_display): same as `print self'.
+
+	* io.c (f_p): can now be called in the method form.
+
+	* re.c (reg_regsub): needed to be mbchar aware.
+
+Mon Apr 13 13:18:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (thread_trap_eval): all signals delivered to main_thread.
+
+Mon Apr 13 12:47:03 1998  TAKAHASHI Masayoshi  <maki@inac.co.jp>
+
+	* re.c (kcode_set_option): did not set SJIS on SJIS condition.
+
+Sun Apr 12 22:14:07 1998  Kazunori NISHI  <kazunori@swlab.csce.kyushu-u.ac.jp>
+
+	* array.c (ary_uniq_bang): should be `==', not `='. embarrassing.
+
+Sat Apr 11 02:13:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* array.c (ary_subseq): SEGVed for `[][1,1]'.
+
+Fri Apr 10 21:29:06 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* array.c (ary_subseq): add check for beg larger than array length.
+
+Wed Apr  8 17:24:11 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* dir.c (dir_s_open): can be called with block (like IO#open).
+
+	* dir.c (dir_s_chdir): print directory path on error.
+
+	* dir.c (dir_s_chroot): ditto
+
+	* dir.c (Init_Dir): needed to override `new'.
+
+Thu Apr  9 18:24:58 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_09.
+
+	* string.c (str_cmp): do not depend on sentinel at the end of the
+	  strings. 
+
+	* string.c (str_chomp_bang): forgot to set the sentinel.
+
+Wed Apr  8 00:59:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* bignum.c (big2int): converted int may be too big to fit in
+	  signed int.
+
+	* parse.y (arg): `foo += 1' should not cause an error.
+
+	* variable.c (rb_const_defined): returned false even if the
+	  constant is defined at the top level.
+
+	* eval.c (f_local_variables): dyna_var->id may be null.  should
+	  have checked before calling str_new2().
+
+Tue Apr  7 01:15:15 1998  Kaneko Naoshi  <wbs01621@mail.wbs.or.jp>
+
+	* re.c (reg_regsub): need to check string boundary.
+
+Tue Apr  7 19:19:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_cmp): returns either 1, 0, -1.
+
+	* array.c (ary_cmp): should check array length, too
+
+Tue Apr  7 18:50:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_08.
+
+Tue Apr  7 18:31:27 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* instruby.rb (mandir): dll installation for cygwin32
+
+Tue Apr  7 01:16:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* config.sub (maybe_os): TOWNS support?
+
+	* config.guess: too strict check for libc versions on linuxes.
+
+	* experimental release 1.1b9_07.
+
+	* array.c (ary_cmp): compare each element using `<=>'.
+
+	* hash.c (hash_each_with_index): yields [value, key] pair.
+
+	* class.c (class_protected_instance_methods): list protected
+	  method names.
+
+	* class.c (ins_methods_i): exclude protected methods.
+
+	* eval.c (PUSH_BLOCK): dynamic variables can be accessed from
+ 	  eval() with bindings.
+
+Mon Apr  6 14:49:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (thread_yield): must return evaluated value.
+
+Fri Apr  3 13:07:29 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (thread_schedule): context switch bypassed on wrong
+	  conditions.
+
+	* variable.c (rb_name_class): set classname by id before String
+ 	  class is initialized (1.0 behavior restored).
+
+Fri Apr  3 11:25:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* numeric.c (num2int): no implicit conversion from string.
+
+	* numeric.c (num2int): check whether `to_i' returns an Integer.
+
+	* numeric.c (num_zero_p): new method.
+
+	* numeric.c (num_nonzero_p): new method.  returns the receiver if
+ 	  it's not zero.
+
+	* eval.c (obj_instance_eval): the_class should be the object's
+	  singleton class.
+
+	* error.c (exc_s_new): message is converted into a string.
+
+Thu Apr  2 18:31:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (obj_call_init): every object call `initialize'.
+
+Wed Apr  1 08:51:53 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* parse.y (stmt): UNTIL_MOD should be for stmt, not only for expr.
+
+Wed Apr  1 01:20:31 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* object.c (true_and): boolean operators &, | and ^.
+
+Tue Mar 31 13:23:58 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* array.c (ary_compact_bang): returns nil, if it does not modify
+	  the array like String's bang methods.
+
+	* array.c (ary_uniq_bang): new method to remove duplicate items.
+
+	* eval.c (bind_s_new): new method.
+
+	* numeric.c (num2int): raise exception if Fixnums too big to
+ 	  convert into `int' in case that sizeof(int) < sizeof(INT).
+
+	* string.c (str_center): SEGV on negative width.
+
+	* eval.c (eval): forgot to set sourcefile.
+
+Mon Mar 30 11:12:29 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* file.c (f_test): raises exception for unkown command.
+
+	* eval.c (Init_eval): `class_eval': alias to the module_eval.
+
+Mon Mar 30 18:50:42 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* string.c (str_capitalize_bang): did not check string modification.
+
+	* string.c (str_delete_bang): wrong conversion.
+
+	* string.c (str_intern): typo in error message.
+
+Mon Mar 30 01:44:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (obj_instance_eval): accepts block as evaluation body.
+	  No compilation needed each time.
+
+	* eval.c (mod_module_eval): ditto
+
+	* file.c (file_s_umask): umask did not return old values, if no
+ 	  argument given.
+
+Sun Mar 29 00:54:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (f_throw): nil returned always.
+
+Sat Mar 28 20:40:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_06.
+
+Sat Mar 28 16:07:11 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* io.c (io_closed): should not cause exception fot closed IO.
+
+	* string.c (str_tr): returned nil for success.
+
+Sat Mar 28 00:47:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (f_local_variables): new method to return an array of
+ 	  local variable names.
+
+	* variable.c (obj_instance_variables): now returns an array of
+	  variable names, as described in the reference.
+
+	* eval.c (rb_attr): honors default method visibility of the
+	  current scope.
+
+Fri Mar 27 13:49:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_05.
+
+	* ruby.c (ruby_prog_init): `site_ruby' added to load_path.
+
+	* ruby.c (ruby_prog_init): load-path order changed.  Paths in
+ 	  the RUBYLIB environment variable comes first in non-tainted
+ 	  mode.
+
+Thu Mar 26 11:51:09 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (rb_call): new feature: `protected' methods.
+
+	* string.c (str_dump): new method.
+
+	* eval.c (block_pass): block argument can be nil, which means no
+	  block is supplied for the method.
+
+Wed Mar 25 21:20:13 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* string.c (str_reverse_bang): string copied to wrong place.
+
+Wed Mar 25 08:12:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* numeric.c (flo_modulo): caused SEGV if left operand is not a
+ 	  float value.
+
+	* eval.c (f_eval): optional third and fourth argument to specify
+	  file-name and line-number.
+
+	* eval.c (eval): file-name and line-number set properly.
+
+	* parse.y (assign_in_cond): literal assignment is now warning, not 
+	  compile error.
+
+	* error.c (Warn): Warn() always print message, OTOH Waring()
+	  prints when verbose flag is set.
+
+Tue Mar 24 12:50:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c (ruby_prog_init): `.' should come last in the load-path.
+
+	* eval.c (Init_eval): `__send__', alias for `send'.
+
+Mon Mar 23 12:44:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_chomp_bang): now takes `rs' as an argument.
+
+	* eval.c (thread_free): main_thread should not be freed.
+
+Fri Mar 20 16:40:34 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_chomp_bang): chomp! (and other ! methods) returns
+ 	  nil if it does not modify the string.
+
+	* string.c (str_sub_iter_s): should check last pattern since it
+ 	  may be matched to null.
+
+Thu Mar 19 13:48:55 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_04.
+
+	* parse.y (yylex): `10e0.9' should cause syntax error.
+
+Wed Mar 18 17:46:31 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c (load_file): new file object constant DATA.  Only
+	  available for the script from the file.
+
+	* regex.c (re_match): forwading failure point popped too much. 
+
+Tue Mar 17 18:23:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* math.c (math_frexp): newly added.
+
+	* math.c (math_ldexp): ditto.
+
+	* bignum.c (bigdivmod): calculates modulo.
+
+	* numeric.c (fix_remainder): returns reminder, formerly introduced
+ 	  as modulo.
+
+	* numeric.c (fix_modulo): calculates proper `modulo'.
+
+	* bignum.c (bigdivmod): wrong sign for reminder.
+
+Mon Mar 16 17:07:28 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_03.
+
+Mon Mar 16 16:33:53 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* io.c (pipe_finalize): needed to add pipe_finalize to pipes on
+	  cygwin32.
+
+Mon Mar 16 14:11:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* class.c (ins_methods_i): needed to consider NOEX_UNDEF.
+
+Mon Mar 16 13:23:53 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* io.c (io_check_closed): check for `fptr->f2 == NULL'.
+
+	* io.c (io_fptr_close): ditto.
+
+Mon Mar 16 11:49:25 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (pipe_atexit): free()ing referencing pipe_list.
+
+	* range.c (range_length): returns zero, if the first is greater
+	  than the last.
+
+	* signal.c (trap_restore_mask): restore signal mask before raising 
+	  exceptions and throws.
+
+Fri Mar 13 13:49:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_02.
+
+	* object.c (mod_clone): need to dups constants and instance
+	  variables.
+
+	* eval.c (rb_eval): forgot to initialize body for NODE_DEFS.
+
+	* eval.c (rb_eval): retrieve self from calling frame, since self
+	  changes sometimes.
+
+	* env.h (FRAME): need to save self in the calling frame.
+
+	* io.c (f_gets_method): rs should be initialized by RS.
+
+Thu Mar 12 15:33:57 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* experimental release 1.1b9_01.
+
+	* range.c (range_s_new): check values by `first <= last'.
+
+	* parse.y (lastline_set): fixed offset for $_ and $~ in the local
+	  variable space.
+
+Wed Mar 11 02:14:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_gets): handle normal case specially for speed.
+
+	* eval.c (rb_disable_super): function to disable superclass's
+	  method explicitly.
+
+	* eval.c (rb_eval): inherits previous method definition's
+	  NOEX_UNDEF-ness, if exists.
+
+	* class.c (rb_define_method): disables superclass's overriding
+ 	  method by default.
+
+Wed Mar 11 01:40:48 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* numeric.c (flo_gt,etc.): do not depend on `<=>', to handle NaN.
+
+Tue Mar 10 00:03:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c (load_file): understands multiple options in #! line.
+
+	* regex.c (re_compile_pattern): support for [:alpha:] etc.
+
+Mon Mar  9 16:53:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.h (GetOpenFile): embed io_check_closed in GetOpenFile.
+
+	* sprintf.c (f_sprintf): zero padding failed for negative
+	  integers.
+
+	* sprintf.c (remove_sign_bits): failed to remove some bits.
+
+Sat Mar  7 21:51:46 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* class.c (ins_methods_i): body may be NULL for some case.
+
+Fri Mar  6 17:23:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* regex.c (mbcinit): table driven mbchar detection.
+
+	* object.c (obj_alloc): check for allocating instance for the
+	  primitive classes (mostly perfect).
+
+	* ext/curses/curses.c (curses_finalize): restore original state at 
+	  interpreter temination.
+
+	* ext/curses/curses.c (curses_addstr): forgot to check argument
+	  type (caused SEGV).  now uses STR2CSTR() macro.
+
+Thu Mar  5 13:47:39 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (block_pass): accepts method object as block args.
+
+	* eval.c (f_missing): use any_to_s() for stringify.
+
+Wed Mar  4 01:39:52 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (block_arg): new syntax - block argument in the
+	  calling arglist.
+
+	* eval.c (rb_call): no module search. simplified a lot.
+
+	* eval.c (rb_eval): block arg support.
+
+	* parse.y (f_block_arg): new syntax - block argument in the
+ 	  formal arglist.
+
+Tue Mar  3 14:20:15 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (obj_method): returns bound method object.
+
+	* eval.c (rb_call): argument check for empty methods.
+
+	* ruby.h (NUM2CHR): new macro, originally from curses module.
+
+Tue Mar  3 13:03:35 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* io.c (io_putc): new method.
+
+Tue Mar  3 11:21:28 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_inspect): more strict charcode detection.
+
+	* eval.c (thread_stop): stopping only thread raises ThreadError
+	  exception.
+
+Tue Mar  3 08:04:56 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
+
+	* struct.c (struct_alloc): imcomplete struct initialization made
+ 	  GC to access unallocated addresses.
+
+Mon Mar  2 16:28:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (thread_stop_method): remove Thread#stop.
+
+Fri Feb 27 18:16:26 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b9 released.
+
+Fri Feb 27 09:36:35 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* hash.c (hash_delete_nil): needed to compare value to nil, since
+	  nil is the valid key for hashes.
+
+	* hash.c (hash_foreach_iter): rehashing causes IndexError.
+
+	* hash.c (hash_foreach_iter): rehash check by pointer comparison.
+
+Thu Feb 26 17:22:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (fname): convert reswords into symbols.
+
+	* parse.y (reswords): reserved words are now embedded in the
+ 	  syntax (sigh).
+
+	* parse.y: now reserved words can be method names safely.
+
+Wed Feb 25 15:50:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (mod_module_eval): clear the_scope's PRIVATE flag before
+	  calling eval().
+
+	* gc.c (gc_call_finalizer_at_exit): run finalizers before any data 
+	  object being freed.
+
+	* eval.c (rb_eval): needed to keep prot_tag->retval before
+	  evaluating the ensure clause.
+
+Tue Feb 24 11:16:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (yylex): reserved words can be appear as method names at
+ 	  right after 'def' and `.'(dot), like foo.next.
+
+	* eval.c (return_check): checks for return out of thread (formerly
+ 	  done in return_value).
+
+	* eval.c (POP_TAG): copy retval to outer level.
+
+	* eval.c (return_value): just set retval, no check, no unwinding.
+
+	* parse.y (nextc): line continuation by backslash at end of line.
+
+	* regex.c (re_compile_pattern): forgot to clear pending_exact on
+	  closing parentheses.
+
+	* parse.y (assignable): should not assign dyna_var to true, if it
+ 	  is already defined.
+
+Mon Feb 23 14:35:03 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* object.c (obj_is_kind_of): no longer accepts true/false/nil.
+
+	* object.c ({true,false,nil}_to_i): can be converted into integers.
+
+Mon Feb 23 12:11:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* re.c (reg_s_quote): needed to be mbchar aware.
+
+	* eval.c (proc_s_new): wrong iter mark.
+
+Sat Feb 21 22:59:30 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* io.c (f_syscall): no argument check.
+
+Fri Feb 20 10:17:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b8 released.
+
+	* ext/kconv/kconv.c (kconv_kconv): default output code now be
+	  determined according to the value of $KCODE.
+
+	* re.c (rb_get_kcode): can retrieve $KCODE from C code. 
+
+	* parse.y (stmt): if/unless modifiers returns nil, if condition is 
+	  not established.
+
+Thu Feb 19 11:06:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/kconv/kconv.c (kconv_kconv): charcode can be specified by
+	  code name (JIS, SJIS, EUC like value of $KCODE).
+
+	* regex.c (re_compile_pattern): forgot to fixup_jump for (?:..).
+
+	* regex.c (re_compile_pattern): needed to clear pending_exact on
+	  non-registering grouping (?:...).
+
+Wed Feb 18 19:54:21 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (here_document): needed to set lex_state to EXPR_END.
+
+Wed Feb 18 18:45:10 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* patches for cygwin32 applied.
+
+Wed Feb 18 00:41:31 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_sub_s): needed to be mbchar aware to increment one
+ 	  character.
+
+	* regex.c (re_match): \Z matches newline just before the end of
+	  the string.
+
+Tue Feb 17 00:04:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* time.c (time_arg): Time.gm and Time.local now understands
+ 	  Time#to_a format.
+
+	* string.c (str_sub_s): replace happened twice for null pattern.
+
+	* regex.c (re_search): null pattern should not match after newline 
+	  at the end of string.
+
+	* time.c (time_isdst): now returns boolean value.
+
+	* error.c (rb_check_type): treat special constants in messages.
+
+	* parse.y (yylex): new form `::Const' to see toplevel constants.
+
+	* parse.y (cond): SEGV on `if ()'.
+
+	* gc.c (obj_free): some data needed explicit free().
+
+Mon Feb 16 23:55:40 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (blk_free): release duplicated block informations.
+
+	* eval.c (blk_copy_prev): duplicate outer block information into
+ 	  the heap, when proc/binding created.
+
+Mon Feb 16 14:38:25 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* time.c (time_mon): now 1 for January and so on.
+
+	* time.c (time_year): year in 19xx (no + 1900 needed anymore).
+
+Mon Feb 16 13:28:33 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* regex.c (re_compile_pattern): need to fetch mbchar's second byte
+ 	  without translation.
+
+Mon Feb 16 12:29:27 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* eval.c (f_pass_block): pass iterator block to other method.
+
+Fri Feb 13 08:16:11 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (parse_regx): handle \s before read_escape().
+
+	* parse.y (read_escape): `\s' in strings as space.
+
+Tue Feb 10 17:29:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b7 released.
+
+	* string.c (str_aset): string insertion by `str[n] = str2'.
+
+	* string.c (str_oct): does recognize `0x'.
+
+ 	* sprintf.c (f_sprintf): use baes 10 for conversion from string to
+ 	  integer.
+
+Mon Feb  9 14:51:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* numeric.c (do_coerce): proper error message.
+
+	* string.c (str_sum): bug - masked by wrong value. (sigh..)
+
+Sat Feb  7 15:11:14 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_empty): new method
+
+Fri Feb  6 01:42:15 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* time.c (time_asctime): use asctime(3), not strftime(3).
+
+Thu Feb  5 18:58:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_fptr_close): do not free path on close().
+
+	* array.c (ary_filter): new method.
+
+	* enum.c (enum_each_with_index): new method.
+
+Thu Feb  5 14:10:35 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (primary): singleton class def can be appeared inside
+ 	  method bodies.
+
+	* hash.c (hash_replace): replace content.
+
+	* string.c (str_replace_method): replace content.
+
+	* array.c (ary_replace_method): replace elements.
+
+	* string.c (str_succ_bang): String#succ!
+
+Thu Feb  5 18:20:30 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* string.c (str_upcase_bang): multi byte character support.
+
+Wed Feb  4 13:55:26 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* array.c (ary_reverse): SEGV on empty array reverse.
+
+Tue Feb  3 12:24:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* re.c (match_to_a): non matching element should be nil.
+
+	* ruby.c (ruby_load_script): load script after all initialization.
+
+	* bignum.c (str2inum): need to interpret prefix `0' of `0x'.
+
+Tue Feb  3 10:00:18 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* numeric.c (fix_rshift): use `sizeof(INT)*8' instead of 32.
+
+Mon Feb  2 14:09:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c (set_arg0): grab environment region too.
+
+Thu Jan 29 18:36:25 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* process.c (rb_proc_exec): check `sh' to be exist.
+
+Thu Jan 29 18:18:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_stdio_set): assignment to $stdin or $stdout does
+	  reopen() as well as $stderr.
+
+Thu Jan 29 14:18:40 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* class.c (mod_ancestors): should not include singleton classes.
+
+	* object.c (obj_type): should not return internal class.
+
+	* io.c (io_reopen): unwillingly closes stdio streams.
+
+Thu Jan 29 11:50:35 1998  Toshihiko SHIMOKAWA  <toshi@csce.kyushu-u.ac.jp>
+
+	* ext/socket/socket.c (udp_addrsetup): forgot to use htons().
+
+Tue Jan 27 23:15:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* keywords: __FILE__, __LINE__ are available again.
+
+Fri Jan 23 14:19:28 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b6 released.
+
+	* object.c (mod_to_s): need to duplicate classpath.
+
+	* error.c (exc_inspect): need to duplicate classpath.
+
+Thu Jan 22 00:37:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.h (STR2CSTR): new macro to retrieve char*.
+
+	* class.c (rb_define_method): `initialize' should always be
+	  private, even if it defined by C extensions.
+
+	* eval.c (rb_eval): `initialize' should always be private.
+
+Thu Jan 22 16:21:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (rb_eval): some singleton class def cause SEGV.
+
+	* eval.c (TMP_ALLOC): replace ALLOCA_N, where thread context
+ 	  switch may happen.
+
+Wed Jan 21 01:43:42 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (PUSH_FRAME): do not use ALLOCA_N().  crash on some
+	  platforms that use missing/alloca.c.
+
+	* regex.c (re_compile_pattern): too many pops for non register
+	  subexpr.
+
+	* parse.y (yylex): open parentheses after identifiers are argument 
+	  list, even if whitespaces have seen.
+
+Tue Jan 20 15:19:59 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (terms): quoted word list by %w(a b c).
+
+	* ext/tcltklib/extconf.rb: more accurate check for tcl/tk libs.
+
+	* file.c (rb_stat): most of the FileTest methods (and function
+ 	  `test') accept File objects as the argument.
+
+Tue Jan 19 18:19:24 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ext/extmk.rb.in (install): there should be no newline after install:
+
+	* re.c (MIN): renamed from min().  there's a local variable named
+ 	  min in the file, so that some cpp will raise an error.
+
+Mon Jan 19 16:30:05 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b5 released.
+
+	* process.c (rb_syswait): no exception raised.
+
+Fri Jan 16 00:43:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.h (CLONESETUP): copies its singleton classes too.
+
+	* class.c (singleton_class_attached): saves binded object in the
+	  singleton classes.
+
+	* eval.c (rb_eval): calls singleton_method_added even in the
+	  singleton class clauses.
+
+Fri Jan 15 23:22:43 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ruby.c (proc_options): -S does not recognize PATH.
+
+Thu Jan 15 02:03:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (rb_clear_cache_by_id): clear only affected cache
+	  entries.
+
+Wed Jan 14 02:14:48 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/socket/socket.c: new UDP/IP socket classes.
+
+Tue Jan 13 10:00:18 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_cmp): ignorecase($=) works wrong.
+
+Fri Jan  9 13:19:55 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b4 released.
+
+	* eval.c (f_missing): class name omitted from the error message.
+
+	* error.c (exc_inspect): description changed.
+
+	* string.c (Init_String): GlobalExit's superclass did not filled,
+	  since GlobalExit created earlier than String.
+
+Thu Jan  8 12:10:09 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (aryset): expr in the brackets can be null.
+
+Wed Jan  7 21:13:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_reopen): keep stderr unclosed.
+
+	* io.c (io_errset): keep stderr unclosed.
+
+Tue Jan  6 00:27:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y: syntax modified for `while expr do .. end' etc.
+
+	* process.c (f_exec,f_system): can supply arbitrary name for the
+ 	  new process.
+
+Mon Jan  5 16:59:13 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* file.c (file_s_basename): removes any extention by ".*".
+
+Sun Jan  4 19:36:22 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* parse.y (yylex): needed to update lex_p (reading point).
+
+Sat Jan  3 19:14:14 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* class.c,object.c: duplicate defines mKernel and cFinxnum.
+
+Fri Jan  2 20:38:59 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/curses/curses.c (NUM2CHAR): uses the first character for
+ 	  string arguments.
+
+	* array.c (ary_fill): did not extend array for ranges.
+
+	* array.c (beg_len): did not return end pos bigger than size.
+
+Fri Jan  2 02:09:16 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* dir.c (dir_s_chdir): bug in nil check.
+
+	* array.c (ary_fill): bug in nil check.
+
+Tue Dec 30 11:46:23 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* hash.c (env_path_tainted): checks directories in PATH
+	  environment variable are not world writable.
+
+	* ruby.c (load_file): invoke specified interpreter if the #! line
+ 	  does not contain the word `ruby'.
+
+Fri Dec 26 03:26:41 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (uscore_get): type information included in the error
+ 	  message.
+
+	* variable.c (f_untrace_var): does not free trace-data within
+ 	  trace procedure.
+
+Thu Dec 25 02:50:29 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b3 released.
+
+	* ruby.h: inlining some functions on gcc 2.x
+
+Tue Dec 23 02:47:33 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (rb_eval): public/private information kept in the current 
+	  scope, to remove undesired state from the class/module.
+
+	* time.c (time_strftime): remove hidden limit of 100 bytes of
+	  result string, using malloc'ed buffer. 
+
+	* hash.c (hash_update): merges the contents of another hash,
+	  overriding existing keys.
+
+	* regex.c (must_instr): totally re-written.
+
+	* io.c (read_all): try to allocate proper sized buffer using
+	  fstat(2) for speedup.
+
+Sat Dec 20 00:27:28 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* regex.c (must_instr): need to skip 2 bytes for mbchars.
+
+Fri Dec 19 01:18:29 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b2 released.
+
+	* eval.c (check_errat): check and convert (if necessary) traceback 
+	  information before assigning to the variable $@.
+
+	* eval.c (f_raise): optional third argument to specify traceback
+	  information.
+
+	* io.c (f_open): prevent infinite recursive call.
+
+Thu Dec 18 19:33:47 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_rindex): now accepts regexp as index.
+
+Thu Dec 18 18:42:50 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ext/socket/extconf.rb: modified to detect win32 socket lib.
+
+Thu Dec 18 00:25:03 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* re.c (reg_equal): checks for source and casefold and kcode matching.
+
+	* marshal.c: became built-in module.
+
+	* ext/marshal/marshal.c (r_object): displays struct name for
+	  non-compatible struct.
+
+	* string.c (str_index_method): now searches character (fixnum) in
+	  the string.
+
+	* string.c (str_include): redefine `include?'.
+
+	* regex.c (re_match): start_nowidth saves current stack position
+	  to stop_nowidth.
+
+	* regex.c (re_compile_pattern): add space to stop_nowidth to save
+	  runtime stack position.
+
+Tue Dec 16 14:57:43 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (scan_once): wrong exception for regexp that match with 
+	  null string (use substr instead of subseq).
+
+Sat Dec 13 00:13:32 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (expr): remove bare assocs from expr rule.
+
+	* rbconfig.rb: renamed from config.rb (it was too generic name).
+
+Fri Dec 12 00:50:25 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (expr): warns if BEGIN or END appear in the method
+ 	  bodies.
+
+	* string.c (str_match): calls y =~ x if y is neither String nor
+	  Regexp so that eregex.rb works.  
+
+	* eval.c (f_at_exit): to register end proc.
+
+	* class.c (rb_define_module_function): define 'function' method
+	  for the Module, not private method.
+
+	* class.c (rb_define_function): function to define `function' method.
+
+	* eval.c (rb_eval): inherit visibility from superclass's method
+	  except when it is set to `function'
+
+	* eval.c (rb_eval): new visibility status `function'.
+
+	* parse.y (yycompile): do not clear eval_tree. thus enable multipe 
+	  command line script by optn `-e'.
+
+	* eval.c (rb_eval): END execute just once.
+
+	* parse.y (expr): BEGIN/END built in the syntax.
+
+Thu Dec 11 13:14:35 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* object.c (mod_le): Module (or Class) comparison.
+
+	* eval.c (rb_remove_method): raises NameError if named method does 
+	  not exist.
+
+	* ext/curses/curses.c: remove CHECK macro for BSD curses.
+	
+Thu Dec 11 12:44:01 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* pack.c: sun4 cc patch
+
+Wed Dec 10 15:21:36 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/marshal/marshal.c (marshal_load): can supply evolution proc
+	  object as optional second argument.
+
+	* re.c (reg_source): get source string of the regular expression.
+
+Tue Dec  9 10:05:17 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b1 released.
+
+	* parse.y (tokadd): token buffer overrun.
+
+	* ruby.c (ruby_prog_init): forgot to protect rb_argv0 from gc.
+
+	* eval.c (ruby_run): call finalizers at process termination.
+
+	* gc.c (gc_call_finalizer_at_exit): call free proc for every Data
+ 	  Wrapper, and finalizer for specified objects at termination.
+
+	* version.c (show_version): version format changed.
+
+	* regex.c (re_match): wrong match with non-greedy if they appear
+	  more than once in regular expressions.
+
+	* sample/ruby-mode.el (ruby-expr-beg): forgot to handle modifiers.
+
+Mon Dec  8 19:00:15 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_puts): just put a newline if no argument given.
+
+	* ext/tcltklib/tcltklib.c (lib_mainloop): thread-aware tk handle
+ 	  when $tk_thread_safe is set.
+
+	* ext/tcltklib/tcltklib.c (lib_mainloop): use Tcl_DoOneEvent()
+	  instead of Tk_MainLoop().
+
+Mon Dec  6 07:11:16 1997  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* io.c (io_puts): core dumped without any argument.
+
+Fri Dec  5 18:17:17 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (mod_remove_method): remove (not undef) a method from the 
+	  class/module.
+
+	* variable.c (obj_remove_instance_variable): method to remove
+	  instance variables.
+
+Thu Dec  4 13:50:29 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1b0 released.
+
+	* string.c (str_aref): called str_index for regexp.
+
+Mon Dec  1 15:24:41 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* compar.c (cmp_between): wrong comparison made.
+
+Wed Nov 26 18:18:05 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* lib/mkmf.rb: generate Makefile for extention modules out of ruby 
+	  source tree. use like `ruby -r mkmf extconf.rb'.
+
+	* numeric.c (fix2str): enlarge buffer to prevent overflow on some
+	  machines.
+
+	* parse.y (here_document): wrong line number generated after here-doc.
+
+Fri Nov 21 13:17:12 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (yylex): skip multibyte characters in comments.
+
+Wed Nov 19 17:19:20 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* object.c (nil_to_a): nil.to_a => [].
+
+	* parse.y (call_args): wrong node generation.
+
+Tue Nov 18 10:13:08 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* array.c (Init_Array): Array#=== works as Array#include?
+
+	* regex.c (re_compile_pattern): insert initialize code for jump_n, 
+	  before entering loops.
+
+	* re.c (reg_search): does not save registers unless $& etc appear
+	  in the script.
+
+Mon Nov 17 13:01:43 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (is_defined): add defined? check for receivers and
+ 	  arguments for calls.
+
+	* re.c (reg_search): cache last match object.
+
+	* re.c (match_aref): $[0] etc. are available.
+
+Sat Nov 15 00:11:36 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* io.c (io_s_popen): "rb" detection
+
+Fri Nov 14 18:28:40 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (scan_once): returns whole match if the pattern does
+	  not contain any parentheses.
+
+Thu Nov 13 14:39:06 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (str_sub): returns copy of the receiver string, even if 
+	  any substitution occurred.
+
+	* regex.c (re_compile_pattern): no-width match by (?=..), (?!..).
+
+Wed Nov 12 13:44:47 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* time.c: remove coerce from Time class.
+
+	* regex.c (re_match): non-greedy match by ??, *? +?, {n,m}?.
+
+Mon Nov 10 11:24:51 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* regex.c (re_compile_pattern): non-resitering parens (?:..).
+
+	* regex.c (re_compile_pattern): new meta character \< (wordbeg)
+	  and \> (wordend).
+
+	* regex.c (re_compile_pattern): embedded comment for regular
+	  expression by (?#...).
+
+Fri Nov  7 16:58:24 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* regex.c (re_compile_pattern): perl5 regxp \A and \Z available.
+
+	* regex.c (re_compile_pattern): can expand compile stack dynamically.
+
+	* regex.c (PUSH_FAILURE_POINT): wrong compare condition.
+
+Wed Nov  2 16:00:00 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* string.c (str_sub_s): "".sub! "", "" => "\000"
+
+Fri Oct 31 15:52:10 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (assoc): keyword assoc like {fg->"black"}.
+
+Thu Oct 30 17:33:38 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_println): print with newline, which is not affected by
+	  the values of $/ and $\.
+
+Thu Oct 30 16:54:01 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* string.c (str_chop_bang): "".chop caused SEGV.
+
+	* string.c (str_chomp_bang): method to chop out last newline.
+
+Mon Oct 27 13:49:13 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/extmk.rb.in: library may have pathname contains `.'
+
+	* eval.c (rb_rescue): should not protect SystemError.
+
+Fri Oct 24 10:58:53 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_s_with_open_stream): ensures to close stream.
+
+Thu Oct 23 11:17:44 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_errset): value of $stderr can be changed (to any IO
+ 	  object).
+
+	* io.c (next_argv): $< can be anything that responds to `write'.
+
+	* file.c (file_s_with_open_file): ensures to close file.
+
+	* error.c (exception): create error under the current class/module.
+
+	* range.c (range_eqq): fixnum check for last needed too.
+
+Wed Oct 22 12:52:30 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/socket/socket.c: Socket::Constants added.
+
+	* file.c: File::Constants added for inclusion.
+
+	* array.c (ary_join): call ary_join() recursively for the 1st
+ 	  array element.
+
+Mon Oct 20 12:18:29 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ruby.c (load_file): wrong condition for #! check with -x.
+
+	* file.c (file_s_dirname): did return "" for "/a".
+
+Fri Oct 17 14:29:09 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c: now works on alpha-linux.
+
+	* bignum.c (bigadd): some undefined side effect order assumed.
+
+Wed Oct 15 17:49:24 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* intern.h: function prototypes added.
+
+Mon Oct 13 16:54:18 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* class.c (rb_define_class_id): call superclass's `inherited'
+ 	  method when making subclasses.
+
+	* parse.y (nextc): clear lex_lastline at the end of file.
+
+	* object.c (Init_Object): need to undef Class#append_features.
+
+	* eval.c (rb_eval): no warning on extending classes or modules.
+
+Thu Oct  9 11:17:50 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (error_print): the exception name follows after the error 
+	  message.
+
+	* eval.c (compile_error): error message slightly changed.
+
+	* parse.y (nextc): script parsing will be terminated by __END__ at
+ 	  beginning of line.
+
+	* eval.c (compile_error): `__END__' is no longer a keyword.
+
+	* parse.y (nextc): protect lastline read from script stream.
+
+Tue Oct  7 14:06:06 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha9 released.
+
+	* eval.c (mod_append_features): renamed from extend_class.
+
+	* eval.c (rb_eval): defining method calls `method_added'.
+
+	* eval.c (ruby_options): exception while processing options must
+	  terminate the interpreter.
+
+	* error.c (Init_Exception): wrong method configuration.  `new'
+	  should have been a singleton method.
+
+Mon Oct  6 18:55:38 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/kconv/kconv.c (kconv_guess): code to guess character code
+	  from string.
+
+Mon Oct  6 18:38:17 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* pack.c: now encode/decode base64 by `m' template.
+
+Fri Oct  3 10:51:10 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* MANIFEST: needed to include lex.c in the distribution.
+
+	* eval.c (ruby_options): f_require() called too early.
+
+	* eval.c (rb_provide): module extentions should always be `.o'.
+
+Thu Oct  2 11:38:31 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha8 released.
+
+	* ext/marshal/marshal.c (r_object): remove temporal regist for
+ 	  structs. (caused problem if structs form cycles.)
+
+	* parse.y (match_gen): static binding for match(=~) calls
+	  with regexp literals.
+
+Wed Oct  1 15:26:55 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c: protect retval in struct tag from GC for C_ALLOCA.
+
+	* eval.c: no more pointer value from setjmp/longjmp.
+
+Wed Oct  1 14:01:49 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ext/marshal/marshal.c (w_byte): argument must be char.
+
+Wed Oct  1 10:30:22 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* variable.c (mod_const_at): global constants now belongs to the
+	  class Object.
+
+	* object.c (Init_Object): new global constant NIL.
+
+	* ext/marshal/marshal.c (marshal_dump): try to set binmode.
+
+	* ext/marshal/marshal.c (r_object): forgot to re-regist structs in 
+	  the object table.
+
+	* eval.c (ruby_options): call Init_ext() before any require()
+ 	  calls by `-r'.
+
+Fri Sep 30 14:29:22 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ext/marshal/marshal.c (w_object): marshal dumped core.
+
+Tue Sep 30 10:27:39 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* sample/test.rb: bignum test suits added.
+
+	* eval.c (rb_eval): new pseudo variable `true' and `false'.
+
+	* parse.y: new keywords `true' and `false' added.
+
+Mon Sep 29 13:37:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c (forbid_setid): forbid some options in suid mode.
+
+	* ruby.h (NUM2DBL): new macro to convert into doubles.
+
+Mon Sep 27 09:53:48 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>
+
+	* bignum.c: modified for speeding.
+
+Fri Sep 26 18:27:59 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* sample/from.rb: some extensions.
+
+Mon Sep 29 13:15:56 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (lhs): no more syntax error on `obj.CONSTANT = value'.
+
+Fri Sep 26 14:41:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (ruby_run): deferred calling Init_ext() just before eval_node.
+
+Fri Sep 26 13:27:24 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* io.c (io_isatty): forgot to return TRUE value.
+
+Fri Sep 25 11:10:58 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>
+
+	* eval.c: use _setjmp/_longjmp instead of setjmp/longjmp on some
+	  platforms.
+
+Wed Sep 24 17:43:13 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* string.c (Init_String): String#taint and String#taint? added.
+
+	* class.c (mod_ancestors): ancestors include the class itself.
+
+Wed Sep 24 00:57:00 1997  Katsuyuki Okabe  <HGC02147@niftyserve.or.jp>
+
+	* X68000 patch.
+
+Tue Sep 23 20:42:30 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>
+
+	* parse.y (node_newnode): SEGV on null node setup.
+
+Mon Sep 22 11:22:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c (ruby_prog_init): wrong safe condition check.
+
+Sun Sep 21 14:46:02 1997  MAEDA shugo  <shugo@po.aianet.ne.jp>
+
+	* error.c (exc_inspect): garbage added to classpath.
+
+Fri Sep 19 11:49:23 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (newtok): forgot to adjust buffer size when shrinking
+	  the token buffer.
+
+	* enum.c (enum_find): rb_eval_cmd() does not return value.
+
+	* io.c (pipe_open): close fds on pipe exec. fcntl(fd, F_SETFD, 1)
+	  no longer used.
+
+Tue Sep 16 17:54:25 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* file.c (f_test): problem if wrong command specified.
+
+	* ruby.c (ruby_prog_init): close stdaux and stdprn for MSDOS.
+
+	* ruby.c (ruby_prog_init): should not add path from environment
+	  variable, if ruby is running under seuid.
+
+	* process.c (init_ids): check suid check for setuid/seteuid etc.
+
+Mon Sep 15 00:42:04 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* regex.c (re_compile_pattern): \w{3} and \W{3} did not work.
+
+Thu Sep 11 10:31:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha7 released.
+
+	* ext/socket/socket.c (sock_new): no setbuf() for NT.
+
+	* io.c (rb_fopen,rb_fdopen): set close-on-exec for every fd.
+
+Wed Sep 10 15:55:31 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ext/marshal/marshal.c (r_bytes0): extra big length check.
+
+Tue Sep  9 16:27:14 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (pipe_fptr_atexit): clean up popen()'ed fptr.
+
+	* error.c (set_syserr): some system has error code that is bigger
+	  than sys_nerr. grrr.
+
+Mon Sep  8 18:33:33 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* io.c (io_s_new): dereferenced nil for optional mode.
+
+Fri Sep  5 10:26:03 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* class.c (class_instance_methods): do not include methods which
+	  are changed to private in subclasses.
+
+Thu Sep  4 12:38:53 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* variable.c (f_global_variables): list name of the global
+	  variables.
+
+	* object.c (obj_id): returns unique integer.
+
+Wed Sep  3 14:05:16 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha6 released.
+
+	* eval.c (mod_s_constants): context sensitive constant list.
+
+	* variable.c (mod_constants): no more `all' option.
+
+	* variable.c (mod_const_of): the values for autoload classes are
+	  their name strings.
+
+	* class.c (class_instance_methods): no special treatment for
+	  singleton classes.
+
+	* object.c (obj_singleton_methods): returns list of singleton
+	  method names.
+
+	* parse.y (yylex): no here document after `class' keyword.
+
+	* eval.c (f_load): expand path if fname begins with `~'.
+
+Tue Sep  2 13:19:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* class.c (ins_methods_i): do not list undef'ed methods.
+
+Mon Sep  1 13:42:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha5 released.
+
+	* object.c (mod_attr_reader): create methods to define attribute
+ 	  reader/write/accessor.
+
+	* class.c (rb_define_attr): always defines accessors.
+
+	* eval.c (rb_call): alias occured in the module body caused SEGV.
+
+	* parse.y: did not generate here document strings properly.
+
+Mon Sep  1 11:43:57 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+	
+	* parse.y (yylex): heredoc dropped an extra character.
+
+Fri Aug 29 11:10:21 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* class.c (class_instance_methods): same method names should not
+ 	  appear more than twice.
+
+	* parse.y (yylex): spaces can follow =begin/=end.
+
+	* variable.c (find_class_path): look for class_tbl also for
+	  unnamed fundamental classes, such as Object, String, etc.
+
+	* variable.c (rb_name_class): can't name class before String class
+ 	  is initilialized.
+
+	* inits.c (rb_call_inits): unrecognized dependency from GC to
+	  Array.
+
+	* variable.c (find_class_path): could not find class if Object's
+ 	  iv_tbl is NULL.
+
+Thu Aug 28 13:12:05 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha4 released.
+
+	* variable.c (mod_constants): wrong condition for singleton
+	  class. 
+
+	* parse.y (yylex): revised `=begin' skip code.
+
+	* parse.y (here_document): forgot to free(eos).
+
+	* parse.y (yylex): spaces after `<<' prohibited for here
+ 	  documents to avoid confusing with operator `<<'.
+
+	* eval.c (is_defined): separated from rb_eval().
+
+Wed Aug 27 11:32:42 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha3 released.
+
+	* variable.c (mod_name): returns name of the class/module.
+
+	* parse.y (here_document): finally here document available now.
+
+	* variable.c (fc_i): some classes/modules does not have iv_tbl.
+
+	* variable.c (find_class_path): avoid inifinite loop.
+
+Tue Aug 26 13:43:47 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (rb_eval): undef'ing non-existing method will raise
+	  NameError exception.
+
+	* object.c (class_s_new): needed to create metaclass too.
+
+	* eval.c (error_print): no class name print for anonymous class.
+
+	* eval.c (rb_longjmp): proper exception raised if raise() called
+ 	  without arguments, with $! or $@ set.
+
+	* object.c (Init_Object): superclass()'s method argument setting
+ 	  was wrong again.
+
+	* class.c (mod_anscestors): list superclasses and included modules 
+	  in priority order.
+
+Mon Aug 25 11:53:11 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha2 released.
+
+	* sample/ruby-mode.el (ruby-parse-region): auto-indent now
+ 	  supports "\\" in the strings.
+
+	* struct.c (struct_getmember): new API to get member value from C
+	  language side.
+
+Sat Aug 23 21:39:05 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* parse.y (asignable): remove unnecessary local variable
+	  initialize by nil.
+
+Fri Aug 22 14:26:40 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (error_print): modified exception print format.
+
+Thu Aug 21 16:10:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* sample/ruby-mode.el (ruby-calculate-indent): wrong indent level
+	  calculated with keyword operators.
+
+Thu Aug 21 11:36:58 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* parse.y (arg): ary[0] += 1 cause SEGV
+
+Wed Aug 20 17:28:50 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* ruby.c (ruby_process_options): require() all modules after
+ 	  processing all options
+
+	* process.c (rb_proc_exec): more security checks added.
+
+	* process.c (rb_proc_exec): insecure path on exec.
+
+	* hash.c (f_getenv): PATH modification security check.
+
+Tue Aug 19 00:15:38 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha1 released.
+
+	* eval.c (mod_eval): work as normal eval() if second binding
+ 	  argument given.
+
+	* eval.c (rb_call): did not raise ArgumentError if too many
+ 	  arguments more than optional arguments (without rest arg).
+
+	* eval.c (rb_eval): did not work well for op_asgn2 (attribute
+	  self assignment).
+
+	* eval.c (Init_Thread): returns main thread.
+
+Mon Aug 18 09:25:56 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* object.c (inspect_i): did not display T_DATA instance variables.
+
+	* parse.y: provides more accurate line number information.
+
+	* eval.c (thread_value): include value's backtrace information in
+	  the variable `$@'. 
+
+	* eval.c (f_abort): print backtrace and exit.
+
+Sat Aug 16 00:17:44 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (class_new_instance): do not make instance from virtual
+	  classes. 
+
+	* object.c (class_s_new): do not make subclass of singleton class.
+
+Fri Aug 15 15:49:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* eval.c (call_trace_func): block context switch in the trace
+          function.
+
+	* eval.c (rb_eval): clear method cache at class extention.
+
+	* object.c (obj_type): returns object's class even if it defines
+	  singleton methods.
+
+Fri Aug 15 19:40:43 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
+
+	* ext/socket/socket.c (Init_socket): small typo caused SEGV.
+
+Wed Aug 13 17:51:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
+
+	* version 1.1 alpha0 released.
+
diff --git a/GPL b/GPL
deleted file mode 100644
index d159169d10..0000000000
--- a/GPL
+++ /dev/null
@@ -1,339 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
-
- 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
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-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 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
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
-
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have.  You must make sure that they, too, receive or can get the
-source code.  And you must show them these terms so they know their
-rights.
-
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
-
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
-
-  Finally, any free program is threatened constantly by software
-patents.  We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary.  To prevent this, we have made it clear that any
-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
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
-  0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
-under the terms of this General Public License.  The "Program", below,
-refers to any such program or work, and a "work based on the Program"
-means either the Program or any derivative work under copyright law:
-that is to say, a work containing the Program or a portion of it,
-either verbatim or with modifications and/or translated into another
-language.  (Hereinafter, translation is included without limitation in
-the term "modification".)  Each licensee is addressed as "you".
-
-Activities other than copying, distribution and modification are not
-covered by this License; they are outside its scope.  The act of
-running the Program is not restricted, and the output from the Program
-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
-
-  1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
-copyright notice and disclaimer of warranty; keep intact all the
-notices that refer to this License and to the absence of any warranty;
-and give any other recipients of the Program a copy of this License
-along with the Program.
-
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
-
-  2. You may modify your copy or copies of the Program or any portion
-of it, thus forming a work based on the Program, and copy and
-distribute such modifications or work under the terms of Section 1
-above, provided that you also meet all of these conditions:
-
-    a) You must cause the modified files to carry prominent notices
-    stating that you changed the files and the date of any change.
-
-    b) You must cause any work that you distribute or publish, that in
-    whole or in part contains or is derived from the Program or any
-    part thereof, to be licensed as a whole at no charge to all third
-    parties under the terms of this License.
-
-    c) If the modified program normally reads commands interactively
-    when run, you must cause it, when started running for such
-    interactive use in the most ordinary way, to print or display an
-    announcement including an appropriate copyright notice and a
-    notice that there is no warranty (or else, saying that you provide
-    a warranty) and that users may redistribute the program under
-    these conditions, and telling the user how to view a copy of this
-    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
-themselves, then this License, and its terms, do not apply to those
-sections when you distribute them as separate works.  But when you
-distribute the same sections as part of a whole which is a work based
-on the Program, the distribution of the whole must be on the terms of
-this License, whose permissions for other licensees extend to the
-entire whole, and thus to each and every part regardless of who wrote it.
-
-Thus, it is not the intent of this section to claim rights or contest
-your rights to work written entirely by you; rather, the intent is to
-exercise the right to control the distribution of derivative or
-collective works based on the Program.
-
-In addition, mere aggregation of another work not based on the Program
-with the Program (or with a work based on the Program) on a volume of
-a storage or distribution medium does not bring the other work under
-the scope of this License.
-
-  3. You may copy and distribute the Program (or a work based on it,
-under Section 2) in object code or executable form under the terms of
-Sections 1 and 2 above provided that you also do one of the following:
-
-    a) Accompany it with the complete corresponding machine-readable
-    source code, which must be distributed under the terms of Sections
-    1 and 2 above on a medium customarily used for software interchange; or,
-
-    b) Accompany it with a written offer, valid for at least three
-    years, to give any third party, for a charge no more than your
-    cost of physically performing source distribution, a complete
-    machine-readable copy of the corresponding source code, to be
-    distributed under the terms of Sections 1 and 2 above on a medium
-    customarily used for software interchange; or,
-
-    c) Accompany it with the information you received as to the offer
-    to distribute corresponding source code.  (This alternative is
-    allowed only for noncommercial distribution and only if you
-    received the program in object code or executable form with such
-    an offer, in accord with Subsection b above.)
-
-The source code for a work means the preferred form of the work for
-making modifications to it.  For an executable work, complete source
-code means all the source code for all modules it contains, plus any
-associated interface definition files, plus the scripts used to
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-special exception, the source code distributed need not include
-anything that is normally distributed (in either source or binary
-form) with the major components (compiler, kernel, and so on) of the
-operating system on which the executable runs, unless that component
-itself accompanies the executable.
-
-If distribution of executable or object code is made by offering
-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
-void, and will automatically terminate your rights under this License.
-However, parties who have received copies, or rights, from you under
-this License will not have their licenses terminated so long as such
-parties remain in full compliance.
-
-  5. You are not required to accept this License, since you have not
-signed it.  However, nothing else grants you permission to modify or
-distribute the Program or its derivative works.  These actions are
-prohibited by law if you do not accept this License.  Therefore, by
-modifying or distributing the Program (or any work based on the
-Program), you indicate your acceptance of this License to do so, and
-all its terms and conditions for copying, distributing or modifying
-the Program or works based on it.
-
-  6. Each time you redistribute the Program (or any work based on the
-Program), the recipient automatically receives a license from the
-original licensor to copy, distribute or modify the Program subject to
-these terms and conditions.  You may not impose any further
-restrictions on the recipients' exercise of the rights granted herein.
-You are not responsible for enforcing compliance by third parties to
-this License.
-
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
-
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
-
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-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
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
-
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-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
-
-  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
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
-
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-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
-
-  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
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    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 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.
-
-Also add information on how to contact you by electronic and paper mail.
-
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
-
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-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 Lesser General
-Public License instead of this License.
diff --git a/KNOWNBUGS.rb b/KNOWNBUGS.rb
deleted file mode 100644
index 4db33a64a2..0000000000
--- a/KNOWNBUGS.rb
+++ /dev/null
@@ -1,89 +0,0 @@
-#
-# 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.
-#
-
-assert_normal_exit %q{
-  using Module.new
-}
-
-=begin
-=================================================================
-==43397==ERROR: AddressSanitizer: use-after-poison on address 0x62d000004028 at pc 0x000107ffd8b2 bp 0x7ffee87380d0 sp 0x7ffee87380c8
-READ of size 8 at 0x62d000004028 thread T0
-    #0 0x107ffd8b1 in invalidate_all_cc vm_method.c:243
-    #1 0x107a891bf in objspace_each_objects_without_setup gc.c:3074
-    #2 0x107ab6d4b in objspace_each_objects_protected gc.c:3084
-    #3 0x107a5409b in rb_ensure eval.c:1137
-    #4 0x107a88bcb in objspace_each_objects gc.c:3152
-    #5 0x107a8888a in rb_objspace_each_objects gc.c:3136
-    #6 0x107ffd843 in rb_clear_method_cache_all vm_method.c:259
-    #7 0x107a55c9f in rb_using_module eval.c:1483
-    #8 0x107a57dcf in top_using eval.c:1829
-    #9 0x10806f65f in call_cfunc_1 vm_insnhelper.c:2439
-    #10 0x108062ea5 in vm_call_cfunc_with_frame vm_insnhelper.c:2601
-    #11 0x1080491b7 in vm_call_cfunc vm_insnhelper.c:2622
-    #12 0x108048136 in vm_call_method_each_type vm_insnhelper.c:3100
-    #13 0x108047507 in vm_call_method vm_insnhelper.c:3204
-    #14 0x10800c03c in vm_call_general vm_insnhelper.c:3240
-    #15 0x10803858e in vm_sendish vm_insnhelper.c:4194
-    #16 0x107feb993 in vm_exec_core insns.def:799
-    #17 0x1080223db in rb_vm_exec vm.c:1944
-    #18 0x108026d2f in rb_iseq_eval_main vm.c:2201
-    #19 0x107a4e863 in rb_ec_exec_node eval.c:296
-    #20 0x107a4e323 in ruby_run_node eval.c:354
-    #21 0x1074c2c94 in main main.c:50
-    #22 0x7fff6b093cc8 in start (libdyld.dylib:x86_64+0x1acc8)
-
-0x62d000004028 is located 40 bytes inside of 16384-byte region [0x62d000004000,0x62d000008000)
-allocated by thread T0 here:
-    #0 0x1086bf1c0 in wrap_posix_memalign (libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x461c0)
-    #1 0x107a9be2f in rb_aligned_malloc gc.c:9748
-    #2 0x107ab26fd in heap_page_allocate gc.c:1771
-    #3 0x107ab24a4 in heap_page_create gc.c:1875
-    #4 0x107ab23e8 in heap_assign_page gc.c:1895
-    #5 0x107a88093 in heap_add_pages gc.c:1908
-    #6 0x107a87f8f in Init_heap gc.c:3030
-    #7 0x107a4afd6 in ruby_setup eval.c:85
-    #8 0x107a4b64c in ruby_init eval.c:108
-    #9 0x1074c2c02 in main main.c:49
-    #10 0x7fff6b093cc8 in start (libdyld.dylib:x86_64+0x1acc8)
-
-SUMMARY: AddressSanitizer: use-after-poison vm_method.c:243 in invalidate_all_cc
-Shadow bytes around the buggy address:
-  0x1c5a000007b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
-  0x1c5a000007c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
-  0x1c5a000007d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
-  0x1c5a000007e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
-  0x1c5a000007f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
-=>0x1c5a00000800: 00 00 00 00 00[f7]00 00 00 00 f7 00 00 00 00 f7
-  0x1c5a00000810: 00 00 00 00 f7 00 00 00 00 f7 00 00 00 00 f7 00
-  0x1c5a00000820: 00 00 00 f7 00 00 00 00 f7 00 00 00 00 f7 00 00
-  0x1c5a00000830: 00 00 f7 00 00 00 00 f7 00 00 00 00 f7 00 00 00
-  0x1c5a00000840: 00 f7 00 00 00 00 f7 00 00 00 00 f7 00 00 00 00
-  0x1c5a00000850: f7 00 00 00 00 f7 00 00 00 00 f7 00 00 00 00 f7
-Shadow byte legend (one shadow byte represents 8 application bytes):
-  Addressable:           00
-  Partially addressable: 01 02 03 04 05 06 07
-  Heap left redzone:       fa
-  Freed heap region:       fd
-  Stack left redzone:      f1
-  Stack mid redzone:       f2
-  Stack right redzone:     f3
-  Stack after return:      f5
-  Stack use after scope:   f8
-  Global redzone:          f9
-  Global init order:       f6
-  Poisoned by user:        f7
-  Container overflow:      fc
-  Array cookie:            ac
-  Intra object redzone:    bb
-  ASan internal:           fe
-  Left alloca redzone:     ca
-  Right alloca redzone:    cb
-  Shadow gap:              cc
-==43397==ABORTING
-=end
diff --git a/LEGAL b/LEGAL
deleted file mode 100644
index 2a7964e771..0000000000
--- a/LEGAL
+++ /dev/null
@@ -1,1051 +0,0 @@
-# -*- 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.
-
-[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) 1992-1996, 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.
-
-[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 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 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 <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.  This Exception is an additional permission under section 7
-    of the GNU General Public License, version 3 ("GPLv3").
-
-[parse.c]
-[parse.h]
-
-  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
-    is included in all copies of any software which is or includes a copy
-    or modification of this software and in all copies of the supporting
-    documentation for such software.
-
-    THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
-    WARRANTY.  IN PARTICULAR, NEITHER THE AUTHOR NOR LUCENT MAKES ANY
-    REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
-    OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
-
-  >>>
-    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
-
-    You may distribute under the terms of either the GNU General Public
-    License or the Artistic License, as specified in the perl README file.
-
-[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.  
-    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)
-    or init_by_array(init_key, key_length).
-
-    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.
-
-    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.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
-
-
-    Any feedback is very welcome.
-    http://www.math.keio.ac.jp/matumoto/emt.html
-    email: matumoto@math.keio.ac.jp
-
-  The Wayback Machine url: http://web.archive.org/web/19990429082237/http://www.math.keio.ac.jp/matumoto/emt.html
-
-[missing/procstat_vm.c]
-
-  This file is under the new-style BSD license.
-
-  >>>
-    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
-    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.
-
-    $FreeBSD: head/usr.bin/procstat/procstat_vm.c 261780 2014-02-11 21:57:37Z jhb $
-
-[vsnprintf.c]
-
-  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 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.
-
-[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.
-
-    This software is provided 'as-is', without any express or implied
-    warranty.  In no event will the authors be held liable for any damages
-    arising from the use of this software.
-
-    Permission is granted to anyone to use this software for any purpose,
-    including commercial applications, and to alter it and redistribute it
-    freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-       claim that you wrote the original software. If you use this software
-       in a product, an acknowledgment in the product documentation would be
-       appreciated but is not required.
-    2. Altered source versions must be plainly marked as such, and must not be
-       misrepresented as being the original software.
-    3. This notice may not be removed or altered from any source distribution.
-
-    L. Peter Deutsch
-    ghost@aladdin.com
-
-[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
-              (Arranged for libc by Todd C. Miller)
-    DATE::    1 March 1996
-
-    Copyright (c):: Katholieke Universiteit Leuven
-    1996, All Rights Reserved
-
-[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.
-
-    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. Neither the name of the copyright holder nor the names of contributors
-       may be used to endorse or promote products derived from this software
-       without specific prior written permission.
-
-    THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTOR(S) ``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(S) OR CONTRIBUTOR(S) 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.
-
-[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.
-
-[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.
-    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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
-
-[ext/win32ole/win32ole.c]
-
-  You can apply the Artistic License to this file. (or GPL,
-  alternatively)
-
-  >>>
-    (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
-    <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
-      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.
-
-== 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
-         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. 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.
-
-      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/MANIFEST b/MANIFEST
new file mode 100644
index 0000000000..04b578b538
--- /dev/null
+++ b/MANIFEST
@@ -0,0 +1,218 @@
+COPYING
+ChangeLog
+MANIFEST
+Makefile.in
+README
+README.jp
+README.EXT
+README.EXT.jp
+ToDo
+array.c
+bignum.c
+class.c
+compar.c
+configure
+configure.bat
+configure.in
+config.dj
+config.guess
+config.sub
+defines.h
+dir.c
+dln.c
+dln.h
+dmyext.c
+enum.c
+env.h
+error.c
+eval.c
+file.c
+fnmatch.c
+fnmatch.h
+gc.c
+glob.c
+hash.c
+inits.c
+install-sh
+instruby.rb
+intern.h
+io.c
+io.h
+keywords
+lex.c
+main.c
+marshal.c
+math.c
+mkconfig.rb
+node.h
+numeric.c
+object.c
+pack.c
+parse.y
+process.c
+random.c
+range.c
+re.c
+re.h
+regex.c
+regex.h
+ruby.1
+ruby.c
+ruby.h
+rubytest.rb
+sig.h
+signal.c
+sprintf.c
+st.c
+st.h
+string.c
+struct.c
+time.c
+top.sed
+util.h
+util.c
+variable.c
+version.c
+version.h
+ext/Setup
+ext/Setup.dj
+ext/Setup.nt
+ext/Setup.x68
+ext/aix_ld.rb
+ext/cygwin32_ld.rb
+ext/extmk.rb.in
+ext/extmk.rb.nt
+lib/English.rb
+lib/Env.rb
+lib/base64.rb
+lib/cgi-lib.rb
+lib/complex.rb
+lib/date.rb
+lib/date2.rb
+lib/debug.rb
+lib/delegate.rb
+lib/e2mmap.rb
+lib/eregex.rb
+lib/find.rb
+lib/final.rb
+lib/finalize.rb
+lib/ftplib.rb
+lib/ftools.rb
+lib/getopts.rb
+lib/importenv.rb
+lib/jcode.rb
+lib/mailread.rb
+lib/mathn.rb
+lib/matrix.rb
+lib/mkmf.rb
+lib/monitor.rb
+lib/mutex_m.rb
+lib/observer.rb
+lib/ostruct.rb
+lib/parsearg.rb
+lib/parsedate.rb
+lib/ping.rb
+lib/pstore.rb
+lib/rational.rb
+lib/shellwords.rb
+lib/sync.rb
+lib/telnet.rb
+lib/tempfile.rb
+lib/thread.rb
+lib/thwait.rb
+lib/tk.rb
+lib/tkcanvas.rb
+lib/tkclass.rb
+lib/tkdialog.rb
+lib/tkentry.rb
+lib/tkmenubar.rb
+lib/tkscrollbox.rb
+lib/tktext.rb
+lib/tracer.rb
+lib/weakref.rb
+missing/alloca.c
+missing/crypt.c
+missing/dir.h
+missing/dup2.c
+missing/file.h
+missing/flock.c
+missing/memcmp.c
+missing/memmove.c
+missing/mkdir.c
+missing/nt.c
+missing/nt.h
+missing/setenv.c
+missing/strcasecmp.c
+missing/strchr.c
+missing/strdup.c
+missing/strerror.c
+missing/strftime.c
+missing/strstr.c
+missing/strtol.c
+missing/strtoul.c
+missing/x68.c
+sample/biorhythm.rb
+sample/cbreak.rb
+sample/clnt.rb
+sample/dbmtest.rb
+sample/dir.rb
+sample/eval.rb
+sample/export.rb
+sample/exyacc.rb
+sample/fact.rb
+sample/fib.awk
+sample/fib.pl
+sample/fib.py
+sample/fib.rb
+sample/fib.scm
+sample/freq.rb
+sample/from.rb
+sample/fullpath.rb
+sample/getopts.test
+sample/goodfriday.rb
+sample/inf-ruby.el
+sample/less.rb
+sample/list.rb
+sample/list2.rb
+sample/list3.rb
+sample/mrshtest.rb
+sample/mkproto.rb
+sample/mpart.rb
+sample/observ.rb
+sample/occur.pl
+sample/occur.rb
+sample/occur2.rb
+sample/philos.rb
+sample/pi.rb
+sample/rbc.rb
+sample/rcs.awk
+sample/rcs.dat
+sample/rcs.rb
+sample/regx.rb
+sample/ruby-mode.el
+sample/rubydb2x.el
+sample/rubydb3x.el
+sample/sieve.rb
+sample/svr.rb
+sample/test.rb
+sample/time.rb
+sample/tkbiff.rb
+sample/tkbrowse.rb
+sample/tkdialog.rb
+sample/tkfrom.rb
+sample/tkhello.rb
+sample/tkline.rb
+sample/tktimer.rb
+sample/trojan.rb
+sample/tsvr.rb
+sample/uumerge.rb
+win32/Makefile
+win32/config.h
+win32/ntsetup.bat
+win32/ruby.def
+win32/sdbm.c
+win32/sdbm.h
+x68/fconvert.c
+x68/select.c
+x68/_dtos18.c
+x68/_round.c
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000000..64ac30fef4
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,211 @@
+SHELL = /bin/sh
+
+#### Start of system configuration section. ####
+
+srcdir = @srcdir@
+VPATH = @srcdir@:@srcdir@/missing
+
+CC = @CC@
+YACC = @YACC@
+PURIFY =
+@SET_MAKE@
+
+prefix = @prefix@
+CFLAGS = @CFLAGS@ -I@includedir@ -I@srcdir@
+LDFLAGS = @STATIC@ $(CFLAGS) @LDFLAGS@
+LIBS = @LIBS@ $(EXTLIBS)
+MISSING = @LIBOBJS@ @ALLOCA@
+
+binsuffix = @binsuffix@
+
+#### End of system configuration section. ####
+
+
+LIBRUBY	      = libruby.a
+
+EXTOBJS	      = 
+
+MAINOBJ	      = main.o
+
+OBJS	      = array.o \
+		bignum.o \
+		class.o \
+		compar.o \
+		dir.o \
+		dln.o \
+		enum.o \
+		error.o \
+		eval.o \
+		file.o \
+		fnmatch.o \
+		gc.o \
+		glob.o \
+		hash.o \
+		inits.o \
+		io.o \
+		marshal.o \
+		math.o \
+		numeric.o \
+		object.o \
+		pack.o \
+		parse.o \
+		process.o \
+		random.o \
+		range.o \
+		re.o \
+		regex.o \
+		ruby.o \
+		signal.o \
+		sprintf.o \
+		st.o \
+		string.o \
+		struct.o \
+		time.o \
+		util.o \
+		variable.o \
+		version.o \
+		$(MISSING)
+
+all:		miniruby$(binsuffix) rbconfig.rb
+		@./miniruby$(binsuffix) -Xext extmk.rb @EXTSTATIC@
+
+miniruby$(binsuffix):	$(OBJS) $(MAINOBJ) dmyext.o
+		@rm -f $@
+		$(PURIFY) $(CC) $(LDFLAGS) $(MAINOBJ) $(OBJS) dmyext.o $(LIBS) -o $@
+
+ruby$(binsuffix):     	$(LIBRUBY) $(MAINOBJ) $(EXTOBJS) 
+		@rm -f $@
+		$(PURIFY) $(CC) $(LDFLAGS) $(MAINOBJ) $(EXTOBJS) $(LIBRUBY) $(LIBS) -o $@
+
+$(LIBRUBY):	$(OBJS) dmyext.o
+		@AR@ rcu $(LIBRUBY) $(OBJS) dmyext.o
+		@-@RANLIB@ $(LIBRUBY) 2> /dev/null || true
+
+install:	rbconfig.rb
+		./miniruby$(binsuffix) $(srcdir)/instruby.rb
+
+clean:;		@rm -f $(OBJS) $(LIBRUBY) $(MAINOBJ) rbconfig.rb
+		@rm -f ext/extinit.c ext/extinit.o dmyext.o
+		@if test -f ./miniruby$(binsuffix); then \
+			./miniruby$(binsuffix) -Xext extmk.rb clean; \
+		fi
+
+distclean:	clean
+		@rm -f Makefile ext/extmk.rb config.h
+		@rm -f ext/config.cache config.cache config.log config.status
+		@rm -f parse.c *~ core *.core gmon.out y.tab.c y.output
+		@rm -f ruby$(binsuffix) miniruby$(binsuffix)
+
+realclean:	distclean
+		@rm -f lex.c
+
+test:		miniruby$(binsuffix)
+		@./miniruby$(binsuffix) $(srcdir)/rubytest.rb
+
+rbconfig.rb:	config.status miniruby$(binsuffix)
+		@./miniruby$(binsuffix) $(srcdir)/mkconfig.rb rbconfig.rb
+
+.c.o:
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c $<
+
+lex.c: keywords
+	gperf -p -j1 -i 1 -g -o -t -N rb_reserved_word -k1,3,$$ keywords > lex.c
+
+parse.c: parse.y
+	$(YACC) $<
+	mv -f y.tab.c parse.c
+
+alloca.o: @srcdir@/missing/alloca.c
+	$(CC) -I. $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/alloca.c
+
+crypt.o: @srcdir@/missing/crypt.c
+	$(CC) -I. $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/crypt.c
+
+dup2.o: @srcdir@/missing/dup2.c
+	$(CC) -I. $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/dup2.c
+
+flock.o: @srcdir@/missing/flock.c
+	$(CC) -I. $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/flock.c
+
+memcmp.o: @srcdir@/missing/memcmp.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/memcmp.c
+
+memmove.o: @srcdir@/missing/memmove.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/memmove.c
+
+mkdir.o: @srcdir@/missing/mkdir.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/mkdir.c
+
+setenv.o: @srcdir@/missing/setenv.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/setenv.c
+
+strcasecmp.o: @srcdir@/missing/strcasecmp.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strcasecmp.c
+
+strchr.o: @srcdir@/missing/strchr.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strchr.c
+
+strdup.o: @srcdir@/missing/strdup.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strdup.c
+
+strerror.o: @srcdir@/missing/strerror.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strerror.c
+
+strftime.o: @srcdir@/missing/strftime.c
+	$(CC) -I. $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strftime.c
+
+strstr.o: @srcdir@/missing/strstr.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strstr.c
+
+strtol.o: @srcdir@/missing/strtol.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strtol.c
+
+strtoul.o: @srcdir@/missing/strtoul.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/strtoul.c
+
+nt.o: @srcdir@/missing/nt.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/nt.c
+
+x68.o: @srcdir@/missing/x68.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c @srcdir@/missing/x68.c
+
+# Prevent GNU make v3 from overflowing arg limit on SysV.
+.NOEXPORT:
+###
+parse.o: parse.y ruby.h config.h defines.h intern.h env.h node.h st.h regex.h util.h lex.c
+###
+array.o: array.c ruby.h config.h defines.h intern.h
+bignum.o: bignum.c ruby.h config.h defines.h intern.h
+class.o: class.c ruby.h config.h defines.h intern.h node.h st.h
+compar.o: compar.c ruby.h config.h defines.h intern.h
+dir.o: dir.c ruby.h config.h defines.h intern.h
+dln.o: dln.c config.h defines.h dln.h
+dmyext.o: dmyext.c
+enum.o: enum.c ruby.h config.h defines.h intern.h
+error.o: error.c ruby.h config.h defines.h intern.h env.h
+eval.o: eval.c ruby.h config.h defines.h intern.h node.h env.h sig.h st.h dln.h
+file.o: file.c ruby.h config.h defines.h intern.h io.h sig.h
+gc.o: gc.c ruby.h config.h defines.h intern.h sig.h st.h node.h env.h re.h regex.h
+hash.o: hash.c ruby.h config.h defines.h intern.h st.h sig.h
+inits.o: inits.c ruby.h config.h defines.h intern.h
+io.o: io.c ruby.h config.h defines.h intern.h io.h sig.h
+main.o: main.c ruby.h config.h defines.h intern.h
+marshal.o: marshal.c ruby.h config.h defines.h intern.h io.h sig.h st.h
+math.o: math.c ruby.h config.h defines.h intern.h
+numeric.o: numeric.c ruby.h config.h defines.h intern.h
+object.o: object.c ruby.h config.h defines.h intern.h st.h
+pack.o: pack.c ruby.h config.h defines.h intern.h
+process.o: process.c ruby.h config.h defines.h intern.h sig.h st.h
+random.o: random.c ruby.h config.h defines.h intern.h
+range.o: range.c ruby.h config.h defines.h intern.h
+re.o: re.c ruby.h config.h defines.h intern.h re.h regex.h
+ruby.o: ruby.c ruby.h config.h defines.h intern.h re.h regex.h dln.h
+signal.o: signal.c ruby.h config.h defines.h intern.h sig.h
+sprintf.o: sprintf.c ruby.h config.h defines.h intern.h
+st.o: st.c config.h st.h
+string.o: string.c ruby.h config.h defines.h intern.h re.h regex.h
+struct.o: struct.c ruby.h config.h defines.h intern.h
+time.o: time.c ruby.h config.h defines.h intern.h
+util.o: util.c ruby.h config.h defines.h intern.h util.h
+variable.o: variable.c ruby.h config.h defines.h intern.h env.h node.h st.h
+version.o: version.c ruby.h config.h defines.h intern.h version.h
diff --git a/NEWS.md b/NEWS.md
deleted file mode 100644
index 9a74c719c7..0000000000
--- a/NEWS.md
+++ /dev/null
@@ -1,466 +0,0 @@
-# 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]]
-
-* Arguments forwarding (`...`) now supports leading arguments.
-  [[Feature #16378]]
-
-    ```ruby
-    def method_missing(meth, ...)
-      send(:"do_#{meth}", ...)
-    end
-    ```
-
-* 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}]], {}]
-    ```
-
-* $SAFE is now a normal global variable with no special behavior.
-  C-API methods related to $SAFE have been removed.
-  [[Feature #16131]]
-
-* 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]]
-
-* Find pattern is added. [[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
-    ```
-
-* 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]]
-
-* Rightward assignment statement is added.  [EXPERIMENTAL]
-  [[Feature #15921]]
-
-    ```ruby
-    fib(10) => x
-    ```
-
-* 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]]
-
-* RBS is introduced. It is a type definition languaged for Ruby programs.
-
-## Command line options
-
-### `--help` option
-
-When the environment variable `RUBY_PAGER` or `PAGER` is present and has
-non-empty value, and the standard input and output are tty, `--help`
-option shows the help message via the pager designated by the value.
-[[Feature #16754]]
-
-## Core classes updates
-
-Outstanding ones only.
-
-* Dir
-
-    * Modified method
-
-        * Dir.glob and Dir.[] now sort the results by default, and
-          accept `sort:` keyword option.  [[Feature #8709]]
-
-* ENV
-
-    * New method
-
-        * ENV.except, which returns a hash excluding the given keys
-          and their values.  [[Feature #15822]]
-
-* Hash
-
-    * Modified method
-
-        * Hash#transform_keys now accepts a hash that maps keys to new
-          keys.  [[Feature #16274]]
-
-    * New method
-
-        * Hash#except, which returns a hash excluding the given keys
-          and their values.  [[Feature #15822]]
-
-* Kernel
-
-    * Modified method
-
-        * Kernel#clone when called with `freeze: false` keyword will call
-          `#initialize_clone` with the `freeze: false` keyword.
-          [[Bug #14266]]
-
-        * Kernel#clone when called with `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]]
-
-* Module
-
-    * Modified method
-
-        * Module#include and #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]
-            ```
-
-* Thread
-
-    * Introduce `Thread#scheduler` for intercepting blocking operations and
-      `Thread.scheduler` for accessing the current scheduler. See
-      doc/scheduler.md for more details. [[Feature #16786]]
-    * `Thread#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]]
-
-* 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]]
-
-* 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` & `Fiber#backtrace_locations` provide per-fiber backtrace.
-      [[Feature #16815]]
-
-* Kernel
-
-    * `Kernel.sleep(...)` invokes the scheduler hook `#kernel_sleep(...)` in a
-      non-blocking execution context. [[Feature #16786]]
-
-* 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. `#puts`, `#gets`) may invoke the scheduler hook
-      `#io_wait(io, events, timeout)` in a non-blocking execution context.
-      [[Feature #16786]]
-
-* ConditionVariable
-
-    * `ConditionVariable#wait` may now invoke the `block`/`unblock` scheduler
-      hooks in a non-blocking context. [[Feature #16786]]
-
-* 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 to enable parallel execution. See doc/ractor.md for
-      more details.
-
-* Symbol
-
-    * Modified method
-
-        * Symbol#to_proc now returns a lambda Proc.
-          [[Feature #16260]]
-
-    * New method
-
-        * Symbol#name, which returns the name of the symbol if it is
-          named.  The returned string cannot be modified.
-          [[Feature #16150]]
-
-* Warning
-
-    * Modified method
-
-        * Warning#warn now supports a category kwarg.
-        [[Feature #17122]]
-
-## Stdlib updates
-
-Outstanding ones only.
-
-* RubyGems
-
-    * Update to RubyGems 3.2.0.rc.1
-
-* Bundler
-
-    * Update to Bundler 2.2.0.rc.1
-
-* Net::HTTP
-
-    * New method
-
-        * Add Net::HTTP#verify_hostname= and Net::HTTP#verify_hostname
-          to skip hostname verification.  [[Feature #16555]]
-
-    * Modified method
-
-        * Net::HTTP.get, Net::HTTP.get_response, and Net::HTTP.get_print can
-          take request headers as a Hash in the second argument when the first
-          argument is a URI.  [[Feature #16686]]
-
-* IRB
-
-    * Update to IRB 1.2.6
-
-* Reline
-
-    * Update to Reline 0.1.5
-
-* Socket
-
-    * TCPSocket.new now supports `resolv_timeout`. [[Feature #17134]]
-
-      ```ruby
-      # it raises SocketError if name resolution is not finished within resolve_timeout.
-      tcp_socket = TCPSocket.new("example.com", 80, resolv_timeout: 10)
-      ```
-
-## Compatibility issues
-
-Excluding feature bug fixes.
-
-* Regexp literals are frozen [[Feature #8948]] [[Feature #16377]]
-
-    ```ruby
-    /foo/.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.
-    * This is experimental; if it brings a big incompatibility issue,
-      it may be reverted until 2.8/3.0 release.
-
-* 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]]
-
-## Stdlib compatibility issues
-
-* Default gems
-
-    * The following libraries are promoted the default gems from stdlib.
-
-        * abbrev
-        * base64
-        * English
-        * erb
-        * find
-        * io-nonblock
-        * io-wait
-        * net-ftp
-        * net-http
-        * net-imap
-        * net-protocol
-        * nkf
-        * open-uri
-        * optparse
-        * resolv
-        * resolv-replace
-        * rinda
-        * securerandom
-        * set
-        * shellwords
-        * tempfile
-        * time
-        * tmpdir
-        * tsort
-        * weakref
-
-* 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 have been removed from ruby standard library. [[Bug #8446]]
-
-    * The issues of sdbm will be handled at https://github.com/ruby/sdbm
-
-## 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]] 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 and 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]]
-
-## 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
-    mehanisms, (1) Disposable inline method cache (2) per-Class method cache
-    and (3) new invalidation mechanism. (1) can avoid per-method call
-    syncrhonization because it only use 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
-
-* Native functions shared by multiple methods are deduplicated on JIT compaction.
-
-* Decrease code size of hot paths by some optimizations and partitioning cold paths.
-
-* Not only pure Ruby methods but also some C methods skip pushing a method frame.
-
-  * `Kernel#class`, `Integer#zero?`
-
-* Always generate appropriate code for `==`, `nil?`, and `!` calls depending on
-  a receiver class.
-
-* Optimize instance variable access in some core classes like Hash and their subclasses
-
-* Eliminate VM register access on a method return
-
-* Optimize C method call a little
-
-## 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.
-
-## 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`.
-
-* Taint deprecation warnings are now issued in regular mode in
-  addition to verbose warning mode.  [[Feature #16131]]
-
-* When an exception is caught in the default handler, the error
-  message and backtrace are printed in order from the innermost.
-  [[Feature #8661]]
-
-
-[Bug #4352]:      https://bugs.ruby-lang.org/issues/4352
-[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 #12706]:     https://bugs.ruby-lang.org/issues/12706
-[Feature #14183]: https://bugs.ruby-lang.org/issues/14183
-[Bug #14266]:     https://bugs.ruby-lang.org/issues/14266
-[Feature #14413]: https://bugs.ruby-lang.org/issues/14413
-[Bug #14541]:     https://bugs.ruby-lang.org/issues/14541
-[Feature #15575]: https://bugs.ruby-lang.org/issues/15575
-[Feature #15822]: https://bugs.ruby-lang.org/issues/15822
-[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 #16260]: https://bugs.ruby-lang.org/issues/16260
-[Feature #16274]: https://bugs.ruby-lang.org/issues/16274
-[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 #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
-[Feature #17104]: https://bugs.ruby-lang.org/issues/17104
-[Feature #17122]: https://bugs.ruby-lang.org/issues/17122
-[GH-2991]:        https://github.com/ruby/ruby/pull/2991
diff --git a/README b/README
new file mode 100644
index 0000000000..ab2fd69dc8
--- /dev/null
+++ b/README
@@ -0,0 +1,130 @@
+* 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 machines)
+
+* How to get Ruby
+
+The Ruby distribution can be found on
+
+  ftp://ftp.netlab.co.jp/pub/lang/ruby/
+
+* How to compile and install
+
+This is what you need to do to compile and install Ruby:
+
+  1. Run ./configure, which will generate config.h and Makefile.
+
+  2. Edit defines.h if you need.  Probably this step will not need.
+
+  3. 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.
+
+  4. Run make.
+
+  5. 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).
+
+  6. Run 'make install'
+
+If you fail to compile Ruby, please send the detailed error report with
+the error log and machine/OS type, to help others.
+
+* Copying
+
+Ruby is copyrighted free software by Yukihiro Matsumoto <matz@netlab.co.jp>.
+You can redistribute it and/or modify it under either the terms of the GPL
+(see COPYING file), 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) rename any non-standard executables so the names do not conflict
+	  with standard executables, which must also be provided.
+
+       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).  But some files in the distribution
+     are not written by the author, so that they are not under this terms.
+     They are gc.c(partly), utils.c(partly), regex.[ch], fnmatch.[ch],
+     glob.c, st.[ch] and some files under the ./missing directory.  See
+     each files for the copying condition.
+
+  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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+     PURPOSE.
+
+* Ruby home-page
+
+The URL of the Ruby home-page is:
+
+   http://www.netlab.co.jp/ruby/
+
+* The Author
+
+Feel free to send comments and bug reports to the author.  Here is the 
+author's latest mail address:
+
+  matz@netlab.co.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 48b8d964c4..c2f81d1a7a 100644
--- a/README.EXT
+++ b/README.EXT
@@ -1 +1,1064 @@
-Moved to doc/extension.rdoc
+.\" README.EXT -  -*- Text -*- created at: Mon Aug  7 16:45:54 JST 1995
+
+This document explains how to make extention modules for ruby.
+
+1¡¥Basic knowledge
+
+In C, variables have types and data do not have types.  In contrast,
+ruby variables do not have static type and data themselves have
+types.  So, data need to be converted across the languages.
+
+Data in ruby represented C type `VALUE'.  Each VALUE data have its
+data-type.
+
+ruby¤Î¥Ç¡¼¥¿¤ÏVALUE¤È¤¤¤¦C¤Î·¿¤Çɽ¸½¤µ¤ì¤Þ¤¹¡¥VALUE·¿¤Î¥Ç¡¼
+¥¿¤Ï¤½¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤ò¼«Ê¬¤ÇÃΤäƤ¤¤Þ¤¹¡¥¤³¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤È
+¤¤¤¦¤Î¤Ï¥Ç¡¼¥¿(¥ª¥Ö¥¸¥§¥¯¥È)¤Î¼ÂºÝ¤Î¹½Â¤¤ò°ÕÌ£¤·¤Æ¤¤¤Æ¡¤ruby
+¤Î¥¯¥é¥¹¤È¤Ï¤Þ¤¿°ã¤Ã¤¿¤â¤Î¤Ç¤¹¡¥
+
+To retrieve an C data from the VALUE, you need to:
+
+ (1) Identify VALUE's data type
+ (2) Convert VALUE into C data
+
+Converting to wrong data type may cause serious promblems.
+
+
+1.1 Data-types
+
+Ruby interpreter has data-types as below:
+
+	T_NIL		nil
+	T_OBJECT	ordinaly object
+	T_CLASS		class
+	T_MODULE	module
+	T_FLOAT		floating point number
+	T_STRING	string
+	T_REGEXP	regular expression
+	T_ARRAY		array
+	T_FIXNUM	Fixnum(31bit integer)
+	T_HASH		assosiative array
+	T_STRUCT	(ruby) structure
+	T_BIGNUM	multi precision integer
+	T_TRUE		true
+	T_FALSE		false
+	T_DATA		data
+
+Otherwise, there are several other types used internally:
+
+	T_ICLASS
+	T_MATCH
+	T_VARMAP
+	T_SCOPE
+	T_NODE
+
+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 data-type of the VALUE.
+TYPE() returns the constant number T_XXXX described above.  To handle
+data-types, the code will be like:
+
+  switch (TYPE(obj)) {
+    case T_FIXNUM:
+      /* process Fixnum */
+      break;
+    case T_STRING:
+      /* process String */
+      break;
+    case T_ARRAY:
+      /* process Array */
+      break;
+    default:
+      /* raise exception */
+      Fail("not valid value");
+      break;
+  }
+
+There is the data-type check function.
+
+  void Check_Type(VALUE value, int type)
+
+It raises an exception, if the VALUE does not have the type specified.
+
+There are faster check-macros for fixnums and nil.
+
+  FIXNUM_P(obj)
+  NIL_P(obj)
+
+1.3 Convert VALUE into C data
+
+¥Ç¡¼¥¿¥¿¥¤¥×¤¬T_NIL, T_FALSE, T_TRUE¤Ç¤¢¤ë»þ¡¤¥Ç¡¼¥¿¤Ï¤½¤ì¤¾
+¤ìnil, FALSE, TRUE¤Ç¤¹¡¥¤³¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤Î¥ª¥Ö¥¸¥§¥¯¥È¤Ï¤Ò¤È
+¤Ä¤º¤Ä¤·¤«Â¸ºß¤·¤Þ¤»¤ó¡¥
+
+¥Ç¡¼¥¿¥¿¥¤¥×¤¬T_FIXNUM¤Î»þ¡¤¤³¤ì¤Ï31bit¤Î¥µ¥¤¥º¤ò»ý¤ÄÀ°¿ô¤Ç
+¤¹¡¥FIXNUM¤òC¤ÎÀ°¿ô¤ËÊÑ´¹¤¹¤ë¤¿¤á¤Ë¤Ï¥Þ¥¯¥í¡ÖFIX2INT()¡×¤ò»È
+¤¤¤Þ¤¹¡¥¤½¤ì¤«¤é¡¤FIXNUM¤Ë¸Â¤é¤ºruby¤Î¥Ç¡¼¥¿¤òÀ°¿ô¤ËÊÑ´¹¤¹¤ë
+¡ÖNUM2INT()¡×¤È¤¤¤¦¥Þ¥¯¥í¤¬¤¢¤ê¤Þ¤¹¡¥¤³¤Î¥Þ¥¯¥í¤Ï¥Ç¡¼¥¿¥¿¥¤
+¥×¤Î¥Á¥§¥Ã¥¯Ìµ¤·¤Ç»È¤¨¤Þ¤¹(À°¿ô¤ËÊÑ´¹¤Ç¤­¤Ê¤¤¾ì¹ç¤Ë¤ÏÎã³°¤¬
+ȯÀ¸¤¹¤ë)¡¥
+
+¤½¤ì°Ê³°¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤ÏÂбþ¤¹¤ëC¤Î¹½Â¤ÂΤ¬¤¢¤ê¤Þ¤¹¡¥Âбþ¤¹
+¤ë¹½Â¤ÂΤΤ¢¤ëVALUE¤Ï¤½¤Î¤Þ¤Þ¥­¥ã¥¹¥È(·¿ÊÑ´¹)¤¹¤ì¤Ð¹½Â¤ÂΤÎ
+¥Ý¥¤¥ó¥¿¤ËÊÑ´¹¤Ç¤­¤Þ¤¹¡¥
+
+¹½Â¤ÂΤϡÖstruct RXxxxx¡×¤È¤¤¤¦Ì¾Á°¤Çruby.h¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤Þ
+¤¹¡¥Î㤨¤Ðʸ»úÎó¤Ï¡Östruct RString¡×¤Ç¤¹¡¥¼ÂºÝ¤Ë»È¤¦²ÄǽÀ­¤¬
+¤¢¤ë¤Î¤Ïʸ»úÎó¤ÈÇÛÎ󤯤餤¤À¤È»×¤¤¤Þ¤¹¡¥
+
+ruby.h¤Ç¤Ï¹½Â¤ÂΤإ­¥ã¥¹¥È¤¹¤ë¥Þ¥¯¥í¤â¡ÖRXXXXX()¡×(Á´ÉôÂçʸ
+»ú¤Ë¤·¤¿¤â¤Î)¤È¤¤¤¦Ì¾Á°¤ÇÄ󶡤µ¤ì¤Æ¤¤¤Þ¤¹(Îã: RSTRING())¡¥
+
+Î㤨¤Ð¡¤Ê¸»úÎóstr¤ÎŤµ¤òÆÀ¤ë¤¿¤á¤Ë¤Ï¡ÖRSTRING(str)->len¡×¤È
+¤·¡¤Ê¸»úÎóstr¤òchar*¤È¤·¤ÆÆÀ¤ë¤¿¤á¤Ë¤Ï¡ÖRSTRING(str)->ptr¡×
+¤È¤·¤Þ¤¹¡¥ÇÛÎó¤Î¾ì¹ç¤Ë¤Ï¡¤¤½¤ì¤¾¤ì¡ÖRARRAT(str)->len¡×¡¤
+¡ÖRARRAT(str)->ptr¡×¤È¤Ê¤ê¤Þ¤¹¡¥
+
+ruby¤Î¹½Â¤ÂΤòľÀÜ¥¢¥¯¥»¥¹¤¹¤ë»þ¤Ëµ¤¤ò¤Ä¤±¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¤³
+¤È¤Ï¡¤ÇÛÎó¤äʸ»úÎó¤Î¹½Â¤ÂΤÎÃæ¿È¤Ï»²¾È¤¹¤ë¤À¤±¤Ç¡¤Ä¾ÀÜÊѹ¹¤·
+¤Ê¤¤¤³¤È¤Ç¤¹¡¥Ä¾ÀÜÊѹ¹¤·¤¿¾ì¹ç¡¤¥ª¥Ö¥¸¥§¥¯¥È¤ÎÆâÍƤÎÀ°¹çÀ­¤¬
+¤È¤ì¤Ê¤¯¤Ê¤Ã¤Æ¡¤»×¤ï¤Ì¥Ð¥°¤Î¸¶°ø¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+1.4 Convert C data into VALUE
+
+VALUE¤Î¼ÂºÝ¤Î¹½Â¤¤Ï
+
+  * FIXNUM¤Î¾ì¹ç
+
+    1bit±¦¥·¥Õ¥È¤·¤Æ¡¤LSB¤òΩ¤Æ¤ë¡¥
+
+  * ¤½¤Î¾¤Î¥Ý¥¤¥ó¥¿¤Î¾ì¹ç
+
+    ¤½¤Î¤Þ¤ÞVALUE¤Ë¥­¥ã¥¹¥È¤¹¤ë¡¥
+
+¤È¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥¤è¤Ã¤Æ¡¤LSB¤ò¥Á¥§¥Ã¥¯¤¹¤ì¤ÐVALUE¤¬FIXNUM¤«¤É
+¤¦¤«¤ï¤«¤ë¤ï¤±¤Ç¤¹(¥Ý¥¤¥ó¥¿¤ÎLSB¤¬Î©¤Ã¤Æ¤¤¤Ê¤¤¤³¤È¤ò²¾Äꤷ¤Æ
+¤¤¤ë)¡¥
+
+¤Ç¤¹¤«¤é¡¤FIXNUM°Ê³°¤Îruby¤Î¥ª¥Ö¥¸¥§¥¯¥È¤Î¹½Â¤ÂΤÏñ¤ËVALUE
+¤Ë¥­¥ã¥¹¥È¤¹¤ë¤À¤±¤ÇVALUE¤ËÊÑ´¹½ÐÍè¤Þ¤¹¡¥¤¿¤À¤·¡¤Ç¤°Õ¤Î¹½Â¤
+ÂΤ¬VALUE¤Ë¥­¥ã¥¹¥È½ÐÍè¤ë¤ï¤±¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡¥¥­¥ã¥¹¥È¤¹¤ë¤Î
+¤Ïruby¤ÎÃΤäƤ¤¤ë¹½Â¤ÂÎ(ruby.h¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ëstruct RXxxx
+¤Î¤â¤Î)¤À¤±¤Ë¤·¤Æ¤ª¤¤¤Æ¤¯¤À¤µ¤¤¡¥
+
+FIXNUM¤Ë´Ø¤·¤Æ¤ÏÊÑ´¹¥Þ¥¯¥í¤ò·Ðͳ¤¹¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥C¤ÎÀ°¿ô
+¤«¤éVALUE¤ËÊÑ´¹¤¹¤ë¥Þ¥¯¥í¤Ï°Ê²¼¤Î¤â¤Î¤¬¤¢¤ê¤Þ¤¹¡¥É¬Íפ˱þ¤¸
+¤Æ»È¤¤Ê¬¤±¤Æ¤¯¤À¤µ¤¤¡¥
+
+  INT2FIX()	¤â¤È¤ÎÀ°¿ô¤¬31bit°ÊÆâ¤Ë¼ý¤Þ¤ë»þ
+  INT2NUM()	Ǥ°Õ¤ÎÀ°¿ô¤«¤éVALUE¤Ø
+
+INT2NUM()¤ÏÀ°¿ô¤¬FIXNUM¤ÎÈϰϤ˼ý¤Þ¤é¤Ê¤¤¾ì¹ç¡¤Bignum¤ËÊÑ´¹
+¤·¤Æ¤¯¤ì¤Þ¤¹(¤¬¡¤¾¯¤·ÃÙ¤¤)¡¥
+
+1.5 Manipulate ruby data
+
+ÀèÄø¤â½Ò¤Ù¤¿Ä̤ꡤruby¤Î¹½Â¤ÂΤò¥¢¥¯¥»¥¹¤¹¤ë»þ¤ËÆâÍƤι¹¿·¤ò
+¹Ô¤¦¤³¤È¤Ï´«¤á¤é¤ì¤Þ¤»¤ó¡¥¤Ç¡¤ruby¤Î¥Ç¡¼¥¿¤òÁàºî¤¹¤ë»þ¤Ë¤Ï
+ruby¤¬ÍÑ°Õ¤·¤Æ¤¤¤ë´Ø¿ô¤òÍѤ¤¤Æ¤¯¤À¤µ¤¤¡¥
+
+¤³¤³¤Ç¤Ï¤â¤Ã¤È¤â»È¤ï¤ì¤ë¤Ç¤¢¤í¤¦Ê¸»úÎó¤ÈÇÛÎó¤ÎÀ¸À®/Áàºî¤ò¹Ô
+¤¤´Ø¿ô¤ò¤¢¤²¤Þ¤¹(Á´Éô¤Ç¤Ï¤Ê¤¤¤Ç¤¹)¡¥
+
+ String funtions
+
+  str_new(char *ptr, int len)
+
+    Creates a new ruby string.
+
+  str_new2(char *ptr)
+
+    Creates a new ruby string from C string.  This is equivalent to
+    str_new(ptr, strlen(ptr)).
+
+  str_cat(VALUE str, char *ptr, int len)
+
+    Appends len bytes data from ptr to the ruby string.
+
+ Array functions
+
+  ary_new()
+
+    Creates an array with no element.
+
+  ary_new2(int len)
+
+    Creates an array with no element, with allocating internal buffer
+    for len elements.
+
+  ary_new3(int n, ...)
+
+    Creates an n-elements array from arguments.
+
+  ary_new4(int n, VALUE *elts)
+
+    Creates an n-elements array from C array.
+
+  ary_push(VALUE ary)
+  ary_pop(VALUE ary, VALUE val)
+  ary_shift(VALUE ary)
+  ary_unshift(VALUE ary, VALUE val)
+  ary_entry(VALUE ary, int idx)
+
+    Array operations.  The first argument to each functions must be an 
+    array.  They may dump core if other types given.
+
+2. Extend ruby with C
+
+¸¶ÍýŪ¤Ëruby¤Ç½ñ¤±¤ë¤³¤È¤ÏC¤Ç¤â½ñ¤±¤Þ¤¹¡¥ruby¤½¤Î¤â¤Î¤¬C¤Çµ­
+½Ò¤µ¤ì¤Æ¤¤¤ë¤ó¤Ç¤¹¤«¤é¡¤ÅöÁ³¤È¤¤¤¨¤ÐÅöÁ³¤Ê¤ó¤Ç¤¹¤±¤É¡¥¤³¤³¤Ç
+¤Ïruby¤Î³ÈÄ¥¤Ë»È¤¦¤³¤È¤¬Â¿¤¤¤À¤í¤¦¤Èͽ¬¤µ¤ì¤ëµ¡Ç½¤òÃæ¿´¤Ë¾Ò
+²ð¤·¤Þ¤¹¡¥
+
+2.1 Add new features to ruby
+
+ruby¤ÇÄ󶡤µ¤ì¤Æ¤¤¤ë´Ø¿ô¤ò»È¤¨¤Ðruby¥¤¥ó¥¿¥×¥ê¥¿¤Ë¿·¤·¤¤µ¡Ç½
+¤òÄɲ乤뤳¤È¤¬¤Ç¤­¤Þ¤¹¡¥ruby¤Ç¤Ï°Ê²¼¤Îµ¡Ç½¤òÄɲ乤ë´Ø¿ô¤¬
+Ä󶡤µ¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+ * ¥¯¥é¥¹¡¤¥â¥¸¥å¡¼¥ë
+ * ¥á¥½¥Ã¥É¡¤Æðۥ᥽¥Ã¥É¤Ê¤É
+ * Äê¿ô
+
+¤Ç¤Ï½ç¤Ë¾Ò²ð¤·¤Þ¤¹¡¥
+
+2.1.1 Class/module definition
+
+¥¯¥é¥¹¤ä¥â¥¸¥å¡¼¥ë¤òÄêµÁ¤¹¤ë¤¿¤á¤Ë¤Ï¡¤°Ê²¼¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  VALUE rb_define_class(char *name, VALUE super)
+  VALUE rb_define_module(char *name)
+
+¤³¤ì¤é¤Î´Ø¿ô¤Ï¿·¤·¤¯ÄêµÁ¤µ¤ì¤¿¥¯¥é¥¹¤ä¥â¥¸¥å¡¼¥ë¤òÊÖ¤·¤Þ¤¹¡¥
+¥á¥½¥Ã¥É¤äÄê¿ô¤ÎÄêµÁ¤Ë¤³¤ì¤é¤ÎÃͤ¬É¬ÍפʤΤǡ¤¤Û¤È¤ó¤É¤Î¾ì¹ç
+¤ÏÌá¤êÃͤòÊÑ¿ô¤Ë³ÊǼ¤·¤Æ¤ª¤¯É¬Íפ¬¤¢¤ë¤Ç¤·¤ç¤¦¡¥
+
+2.1.2 Method/singleton method definition
+
+¥á¥½¥Ã¥É¤äÆðۥ᥽¥Ã¥É¤òÄêµÁ¤¹¤ë¤Ë¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  void rb_define_method(VALUE class, char *name, 
+		        VALUE (*func)(), int argc)
+
+  void rb_define_singleton_method(VALUE object, char *name, 
+			         VALUE (*func)(), int argc)
+
+
+Ç°¤Î¤¿¤áÀâÌÀ¤¹¤ë¤È¡ÖÆðۥ᥽¥Ã¥É¡×¤È¤Ï¡¤¤½¤ÎÆÃÄê¤Î¥ª¥Ö¥¸¥§¥¯
+¥È¤ËÂФ·¤Æ¤À¤±Í­¸ú¤Ê¥á¥½¥Ã¥É¤Ç¤¹¡¥ruby¤Ç¤Ï¤è¤¯Smalltalk¤Ë¤ª
+¤±¤ë¥¯¥é¥¹¥á¥½¥Ã¥É¤È¤·¤Æ¡¤¥¯¥é¥¹¤ËÂФ¹¤ëÆðۥ᥽¥Ã¥É¤¬»È¤ï¤ì
+¤Þ¤¹¡¥
+
+¤³¤ì¤é¤Î´Ø¿ô¤Î argc¤È¤¤¤¦°ú¿ô¤ÏC¤Î´Ø¿ô¤ØÅϤµ¤ì¤ë°ú¿ô¤Î¿ô(¤È
+·Á¼°)¤ò·è¤á¤Þ¤¹¡¥argc¤¬Àµ¤Î»þ¤Ï´Ø¿ô¤Ë°ú¤­ÅϤ¹°ú¿ô¤Î¿ô¤ò°ÕÌ£
+¤·¤Þ¤¹¡¥16¸Ä°Ê¾å¤Î°ú¿ô¤Ï»È¤¨¤Þ¤»¤ó(¤¬¡¤Íפê¤Þ¤»¤ó¤è¤Í¡¤¤½¤ó
+¤Ê¤Ë)¡¥
+
+argc¤¬Éé¤Î»þ¤Ï°ú¿ô¤Î¿ô¤Ç¤Ï¤Ê¤¯¡¤·Á¼°¤ò»ØÄꤷ¤¿¤³¤È¤Ë¤Ê¤ê¤Þ¤¹¡¥
+argc¤¬-1¤Î»þ¤Ï°ú¿ô¤òÇÛÎó¤ËÆþ¤ì¤ÆÅϤµ¤ì¤Þ¤¹¡¥argc¤¬-2¤Î»þ¤Ï°ú
+¿ô¤Ïruby¤ÎÇÛÎó¤È¤·¤ÆÅϤµ¤ì¤Þ¤¹¡¥
+
+¥á¥½¥Ã¥É¤òÄêµÁ¤¹¤ë´Ø¿ô¤Ï¤â¤¦Æó¤Ä¤¢¤ê¤Þ¤¹¡¥¤Ò¤È¤Ä¤Ïprivate¥á
+¥½¥Ã¥É¤òÄêµÁ¤¹¤ë´Ø¿ô¤Ç¡¤°ú¿ô¤Ïrb_define_method()¤ÈƱ¤¸¤Ç¤¹¡¥
+
+  void rb_define_private_method(VALUE class, char *name, 
+			        VALUE (*func)(), int argc)
+
+private¥á¥½¥Ã¥É¤È¤Ï´Ø¿ô·Á¼°¤Ç¤·¤«¸Æ¤Ó½Ð¤¹¤³¤È¤Î½ÐÍè¤Ê¤¤¥á¥½¥Ã
+¥É¤Ç¤¹¡¥
+
+¤â¤¦¤Ò¤È¤Ä¤Ï¥â¥¸¥å¡¼¥ë´Ø¿ô¤òÄêµÁ¤¹¤ë¤â¤Î¤Ç¤¹¡¥¥â¥¸¥å¡¼¥ë´Ø¿ô
+¤È¤Ï¥â¥¸¥å¡¼¥ë¤ÎÆðۥ᥽¥Ã¥É¤Ç¤¢¤ê¡¤Æ±»þ¤Ëprivate¥á¥½¥Ã¥É¤Ç
+¤â¤¢¤ë¤â¤Î¤Ç¤¹¡¥Îã¤ò¤¢¤²¤ë¤ÈMath¥â¥¸¥å¡¼¥ë¤Îsqrt()¤Ê¤É¤¬¤¢¤²
+¤é¤ì¤Þ¤¹¡¥¤³¤Î¥á¥½¥Ã¥É¤Ï
+
+  Math.sqrt(4)
+
+¤È¤¤¤¦·Á¼°¤Ç¤â
+
+  include Math
+  sqrt(4)
+
+¤È¤¤¤¦·Á¼°¤Ç¤â»È¤¨¤Þ¤¹¡¥¥â¥¸¥å¡¼¥ë´Ø¿ô¤òÄêµÁ¤¹¤ë´Ø¿ô¤Ï°Ê²¼¤Î
+Ä̤ê¤Ç¤¹¡¥
+
+  void rb_define_module_function(VALUE module, char *name, 
+				 VALUE (*func)(), int argc)
+
+´Ø¿ôŪ¥á¥½¥Ã¥É(Kernel¥â¥¸¥å¡¼¥ë¤Îprivaet method)¤òÄêµÁ¤¹¤ë¤¿
+¤á¤Î´Ø¿ô¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¹¡¥
+
+  void rb_define_global_function(char *name, VALUE (*func)(), int argc)
+
+
+2.1.3 Constant definition
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ë¤¬É¬ÍפÊÄê¿ô¤Ï¤¢¤é¤«¤¸¤áÄêµÁ¤·¤Æ¤ª¤¤¤¿Êý¤¬Îɤ¤
+¤Ç¤·¤ç¤¦¡¥Äê¿ô¤òÄêµÁ¤¹¤ë´Ø¿ô¤ÏÆó¤Ä¤¢¤ê¤Þ¤¹¡¥
+
+  void rb_define_const(VALUE class, char *name, VALUE val)
+  void rb_define_global_const(char *name, VALUE val)
+
+Á°¼Ô¤ÏÆÃÄê¤Î¥¯¥é¥¹/¥â¥¸¥å¡¼¥ë¤Ë°¤¹¤ëÄê¿ô¤òÄêµÁ¤¹¤ë¤â¤Î¡¤¸å
+¼Ô¤Ï¥°¥í¡¼¥Ð¥ë¤ÊÄê¿ô¤òÄêµÁ¤¹¤ë¤â¤Î¤Ç¤¹¡¥
+
+2.2 Use ruby features from C
+
+´û¤Ë¡Ø1.5 ruby¤Î¥Ç¡¼¥¿¤òÁàºî¤¹¤ë¡Ù¤Ç°ìÉô¾Ò²ð¤·¤¿¤è¤¦¤Ê´Ø¿ô¤ò
+»È¤¨¤Ð¡¤ruby¤Îµ¡Ç½¤ò¼Â¸½¤·¤Æ¤¤¤ë´Ø¿ô¤òľÀܸƤӽФ¹¤³¤È¤¬½ÐÍè
+¤Þ¤¹¡¥
+
+# ¤³¤Î¤è¤¦¤Ê´Ø¿ô¤Î°ìÍ÷ɽ¤Ï¤¤¤Þ¤Î¤È¤³¤í¤¢¤ê¤Þ¤»¤ó¡¥¥½¡¼¥¹¤ò¸«
+# ¤ë¤·¤«¤Ê¤¤¤Ç¤¹¤Í¡¥
+
+¤½¤ì°Ê³°¤Ë¤âruby¤Îµ¡Ç½¤ò¸Æ¤Ó½Ð¤¹ÊýË¡¤Ï¤¤¤¯¤Ä¤«¤¢¤ê¤Þ¤¹¡¥
+
+2.2.1 ruby¤Î¥×¥í¥°¥é¥à¤òeval¤¹¤ë
+
+C¤«¤éruby¤Îµ¡Ç½¤ò¸Æ¤Ó½Ð¤¹¤â¤Ã¤È¤â´Êñ¤ÊÊýË¡¤È¤·¤Æ¡¤Ê¸»úÎó¤Ç
+Í¿¤¨¤é¤ì¤¿ruby¤Î¥×¥í¥°¥é¥à¤òɾ²Á¤¹¤ë´Ø¿ô¤¬¤¢¤ê¤Þ¤¹¡¥
+
+  VALUE rb_eval_string(char *str)
+
+¤³¤Îɾ²Á¤Ï¸½ºß¤Î´Ä¶­¤Ç¹Ô¤ï¤ì¤Þ¤¹¡¥¤Ä¤Þ¤ê¡¤¸½ºß¤Î¥í¡¼¥«¥ëÊÑ¿ô
+¤Ê¤É¤ò¼õ¤±·Ñ¤®¤Þ¤¹¡¥
+
+2.2.2 ID or Symbol
+
+C¤«¤éʸ»úÎó¤ò·Ðͳ¤»¤º¤Ëruby¤Î¥á¥½¥Ã¥É¤ò¸Æ¤Ó½Ð¤¹¤³¤È¤â¤Ç¤­¤Þ
+¤¹¡¥¤½¤ÎÁ°¤Ë¡¤ruby¥¤¥ó¥¿¥×¥ê¥¿Æâ¤Ç¥á¥½¥Ã¥É¤äÊÑ¿ô̾¤ò»ØÄꤹ¤ë
+»þ¤Ë»È¤ï¤ì¤Æ¤¤¤ëID¤Ë¤Ä¤¤¤ÆÀâÌÀ¤·¤Æ¤ª¤­¤Þ¤·¤ç¤¦¡¥
+
+ID¤È¤ÏÊÑ¿ô̾¡¤¥á¥½¥Ã¥É̾¤òɽ¤¹À°¿ô¤Ç¤¹¡¥ruby¤ÎÃæ¤Ç¤Ï
+
+ :¼±ÊÌ»Ò
+
+¤Ç¥¢¥¯¥»¥¹¤Ç¤­¤Þ¤¹¡¥C¤«¤é¤³¤ÎÀ°¿ô¤òÆÀ¤ë¤¿¤á¤Ë¤Ï´Ø¿ô
+
+  rb_intern(char *name)
+
+¤ò»È¤¤¤Þ¤¹¡¥¤Þ¤¿°ìʸ»ú¤Î±é»»»Ò¤Ï¤½¤Îʸ»ú¥³¡¼¥É¤¬¤½¤Î¤Þ¤Þ¥·¥ó
+¥Ü¥ë¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+2.2.3 Invoke ruby method from C
+
+C¤«¤éʸ»úÎó¤ò·Ðͳ¤»¤º¤Ëruby¤Î¥á¥½¥Ã¥É¤ò¸Æ¤Ó½Ð¤¹¤¿¤á¤Ë¤Ï°Ê²¼
+¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  VALUE rb_funcall(VALUE recv, ID mid, int argc, ...)
+
+¤³¤Î´Ø¿ô¤Ï¥ª¥Ö¥¸¥§¥¯¥Èrecv¤Îmid¤Ç»ØÄꤵ¤ì¤ë¥á¥½¥Ã¥É¤ò¸Æ¤Ó½Ð
+¤·¤Þ¤¹¡¥
+
+2.2.4 ÊÑ¿ô/Äê¿ô¤ò»²¾È/¹¹¿·¤¹¤ë
+
+C¤«¤é´Ø¿ô¤ò»È¤Ã¤Æ»²¾È¡¦¹¹¿·¤Ç¤­¤ë¤Î¤Ï¡¤¥¯¥é¥¹Äê¿ô¡¤¥¤¥ó¥¹¥¿
+¥ó¥¹ÊÑ¿ô¤Ç¤¹¡¥Âç°èÊÑ¿ô¤Ï°ìÉô¤Î¤â¤Î¤ÏC¤ÎÂç°èÊÑ¿ô¤È¤·¤Æ¥¢¥¯¥»
+¥¹¤Ç¤­¤Þ¤¹¡¥¥í¡¼¥«¥ëÊÑ¿ô¤ò»²¾È¤¹¤ëÊýË¡¤Ï¸ø³«¤·¤Æ¤¤¤Þ¤»¤ó¡¥
+
+¥ª¥Ö¥¸¥§¥¯¥È¤Î¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô¤ò»²¾È¡¦¹¹¿·¤¹¤ë´Ø¿ô¤Ï°Ê²¼¤ÎÄÌ
+¤ê¤Ç¤¹¡¥
+
+  VALUE rb_ivar_get(VALUE obj, ID id)
+  VALUE rb_ivar_set(VALUE obj, ID id, VALUE val)
+
+id¤Ïrb_intern()¤ÇÆÀ¤é¤ì¤ë¤â¤Î¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡¥
+
+¥¯¥é¥¹Äê¿ô¤ò»²¾È¤¹¤ë¤Ë¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡¥
+
+  VALUE rb_const_get(VALUE obj, ID id)
+
+¥¯¥é¥¹Äê¿ô¤ò¿·¤·¤¯ÄêµÁ¤¹¤ë¤¿¤á¤Ë¤Ï¡Ø2.1.3 Äê¿ôÄêµÁ¡Ù¤Ç¾Ò²ð¤µ
+¤ì¤Æ¤¤¤ë´Ø¿ô¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡¥
+
+3. Informatin sharing between ruby and C
+
+C¸À¸ì¤Èruby¤Î´Ö¤Ç¾ðÊó¤ò¶¦Í­¤¹¤ëÊýË¡¤Ë¤Ä¤¤¤Æ²òÀ⤷¤Þ¤¹¡¥
+
+3.1 Ruby constant that C¤«¤é»²¾È¤Ç¤­¤ëruby¤ÎÄê¿ô
+
+Following ruby constants can be referred from C.
+
+  TRUE
+  FALSE
+
+Boolean values.  FALSE is false in the C also (i.e. 0).
+
+  Qnil
+
+Ruby nil in C scope.
+
+3.2 Global variables shared between C and ruby
+
+C¤Èruby¤ÇÂç°èÊÑ¿ô¤ò»È¤Ã¤Æ¾ðÊó¤ò¶¦Í­¤Ç¤­¤Þ¤¹¡¥¶¦Í­¤Ç¤­¤ëÂç°è
+ÊÑ¿ô¤Ë¤Ï¤¤¤¯¤Ä¤«¤Î¼ïÎब¤¢¤ê¤Þ¤¹¡¥¤½¤Î¤Ê¤«¤Ç¤â¤Ã¤È¤âÎɤ¯»È¤ï
+¤ì¤ë¤È»×¤ï¤ì¤ë¤Î¤Ïrb_define_variable()¤Ç¤¹¡¥
+
+  void rb_define_variable(char *name, VALUE *var)
+
+¤³¤Î´Ø¿ô¤Ïruby¤ÈC¤È¤Ç¶¦Í­¤¹¤ëÂç°èÊÑ¿ô¤òÄêµÁ¤·¤Þ¤¹¡¥ÊÑ¿ô̾¤¬
+`$'¤Ç»Ï¤Þ¤é¤Ê¤¤»þ¤Ë¤Ï¼«Æ°Åª¤ËÄɲ䵤ì¤Þ¤¹¡¥¤³¤ÎÊÑ¿ô¤ÎÃͤòÊÑ
+¹¹¤¹¤ë¤È¼«Æ°Åª¤Ëruby¤ÎÂбþ¤¹¤ëÊÑ¿ô¤ÎÃͤâÊѤï¤ê¤Þ¤¹¡¥
+
+¤Þ¤¿ruby¦¤«¤é¤Ï¹¹¿·¤Ç¤­¤Ê¤¤ÊÑ¿ô¤â¤¢¤ê¤Þ¤¹¡¥¤³¤Îread only¤Î
+ÊÑ¿ô¤Ï°Ê²¼¤Î´Ø¿ô¤ÇÄêµÁ¤·¤Þ¤¹¡¥
+
+  void rb_define_readonly_variable(char *name, VALUE *var)
+
+¤³¤ì¤éÊÑ¿ô¤Î¾¤Ëhook¤ò¤Ä¤±¤¿Âç°èÊÑ¿ô¤òÄêµÁ¤Ç¤­¤Þ¤¹¡¥hookÉÕ¤­
+¤ÎÂç°èÊÑ¿ô¤Ï°Ê²¼¤Î´Ø¿ô¤òÍѤ¤¤ÆÄêµÁ¤·¤Þ¤¹¡¥hookÉÕ¤­Âç°èÊÑ¿ô¤Î
+Ãͤλ²¾È¤äÀßÄê¤Ïhook¤Ç¹Ô¤¦É¬Íפ¬¤¢¤ê¤Þ¤¹¡¥
+
+  void rb_define_hooked_variable(char *name, VALUE *var,
+				 VALUE (*getter)(), VALUE (*setter)())
+
+¤³¤Î´Ø¿ô¤ÏC¤Î´Ø¿ô¤Ë¤è¤Ã¤Æhook¤Î¤Ä¤±¤é¤ì¤¿Âç°èÊÑ¿ô¤òÄêµÁ¤·¤Þ
+¤¹¡¥ÊÑ¿ô¤¬»²¾È¤µ¤ì¤¿»þ¤Ë¤Ï´Ø¿ôgetter¤¬¡¤ÊÑ¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì
+¤¿»þ¤Ë¤Ï´Ø¿ôsetter¤¬¸Æ¤Ð¤ì¤ë¡¥hook¤ò»ØÄꤷ¤Ê¤¤¾ì¹ç¤Ïgetter¤ä
+setter¤Ë0¤ò»ØÄꤷ¤Þ¤¹¡¥
+
+# getter¤âsetter¤â0¤Ê¤é¤Ðrb_define_variable()¤ÈƱ¤¸¤Ë¤Ê¤ë¡¥
+
+¤½¤ì¤«¤é¡¤C¤Î´Ø¿ô¤Ë¤è¤Ã¤Æ¼Â¸½¤µ¤ì¤ëruby¤ÎÂç°èÊÑ¿ô¤òÄêµÁ¤¹¤ë
+´Ø¿ô¤¬¤¢¤ê¤Þ¤¹¡¥
+
+  void rb_define_virtual_variable(char *name,
+				  VALUE (*getter)(), VALUE (*setter)())
+
+¤³¤Î´Ø¿ô¤Ë¤è¤Ã¤ÆÄêµÁ¤µ¤ì¤¿ruby¤ÎÂç°èÊÑ¿ô¤¬»²¾È¤µ¤ì¤¿»þ¤Ë¤Ï
+getter¤¬¡¤ÊÑ¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì¤¿»þ¤Ë¤Ïsetter¤¬¸Æ¤Ð¤ì¤Þ¤¹¡¥
+
+The prototypes of the getter and setter functions are as following:
+
+  (*getter)(ID id, void *data, struct global_entry* entry);
+  (*setter)(VALUE val, ID id, void *data, struct global_entry* entry);
+
+3.3 Encapsulate C data into ruby object
+
+C¤ÎÀ¤³¦¤ÇÄêµÁ¤µ¤ì¤¿¥Ç¡¼¥¿(¹½Â¤ÂÎ)¤òruby¤Î¥ª¥Ö¥¸¥§¥¯¥È¤È¤·¤Æ
+¼è¤ê°·¤¤¤¿¤¤¾ì¹ç¤¬¤¢¤ê¤¨¤Þ¤¹¡¥¤³¤Î¤è¤¦¤Ê¾ì¹ç¤Ë¤Ï¡¤Data¤È¤¤¤¦
+ruby¥ª¥Ö¥¸¥§¥¯¥È¤ËC¤Î¹½Â¤ÂÎ(¤Ø¤Î¥Ý¥¤¥ó¥¿)¤ò¤¯¤ë¤à¤³¤È¤Çruby
+¥ª¥Ö¥¸¥§¥¯¥È¤È¤·¤Æ¼è¤ê°·¤¨¤ë¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+Data¥ª¥Ö¥¸¥§¥¯¥È¤òÀ¸À®¤·¤Æ¹½Â¤ÂΤòruby¥ª¥Ö¥¸¥§¥¯¥È¤Ë¥«¥×¥»¥ë
+²½¤¹¤ë¤¿¤á¤Ë¤Ï¡¤°Ê²¼¤Î¥Þ¥¯¥í¤ò»È¤¤¤Þ¤¹¡¥
+
+  Data_Wrap_Struct(class,mark,free,ptr)
+
+¤³¤Î¥Þ¥¯¥í¤ÎÌá¤êÃͤÏÀ¸À®¤µ¤ì¤¿Data¥ª¥Ö¥¸¥§¥¯¥È¤Ç¤¹¡¥
+
+class¤Ï¤³¤ÎData¥ª¥Ö¥¸¥§¥¯¥È¤Î¥¯¥é¥¹¤Ç¤¹¡¥ptr¤Ï¥«¥×¥»¥ë²½¤¹¤ë
+C¤Î¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤Ç¤¹¡¥mark¤Ï¤³¤Î¹½Â¤ÂΤ¬ruby¤Î¥ª¥Ö¥¸¥§
+¥¯¥È¤Ø¤Î»²¾È¤¬¤¢¤ë»þ¤Ë»È¤¦´Ø¿ô¤Ç¤¹¡¥¤½¤Î¤è¤¦¤Ê»²¾È¤ò´Þ¤Þ¤Ê¤¤
+»þ¤Ë¤Ï0¤ò»ØÄꤷ¤Þ¤¹¡¥
+
+# ¤½¤Î¤è¤¦¤Ê»²¾È¤Ï´«¤á¤é¤ì¤Þ¤»¤ó¡¥
+
+free¤Ï¤³¤Î¹½Â¤ÂΤ¬¤â¤¦ÉÔÍפˤʤä¿»þ¤Ë¸Æ¤Ð¤ì¤ë´Ø¿ô¤Ç¤¹¡¥¤³¤Î
+´Ø¿ô¤¬¥¬¡¼¥Ù¡¼¥¸¥³¥ì¥¯¥¿¤«¤é¸Æ¤Ð¤ì¤Þ¤¹¡¥
+
+C¤Î¹½Â¤ÂΤγäÅö¤ÈData¥ª¥Ö¥¸¥§¥¯¥È¤ÎÀ¸À®¤òƱ»þ¤Ë¹Ô¤¦¥Þ¥¯¥í¤È
+¤·¤Æ°Ê²¼¤Î¤â¤Î¤¬Ä󶡤µ¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+  Data_Make_Struct(class, type, mark, free, sval)
+
+¤³¤Î¥Þ¥¯¥í¤ÎÌá¤êÃͤÏÀ¸À®¤µ¤ì¤¿Data¥ª¥Ö¥¸¥§¥¯¥È¤Ç¤¹¡¥
+
+class, mark, free¤ÏData_Wrap_Struct¤ÈƱ¤¸Æ¯¤­¤ò¤·¤Þ¤¹¡¥type
+¤Ï³ä¤êÅö¤Æ¤ëC¹½Â¤ÂΤη¿¤Ç¤¹¡¥³ä¤êÅö¤Æ¤é¤ì¤¿¹½Â¤ÂΤÏÊÑ¿ôsval
+¤ËÂåÆþ¤µ¤ì¤Þ¤¹¡¥¤³¤ÎÊÑ¿ô¤Î·¿¤Ï (type*) ¤Ç¤¢¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥
+
+Data¥ª¥Ö¥¸¥§¥¯¥È¤«¤é¥Ý¥¤¥ó¥¿¤ò¼è¤ê½Ð¤¹¤Î¤Ï°Ê²¼¤Î¥Þ¥¯¥í¤òÍѤ¤
+¤Þ¤¹¡¥
+
+  Data_Get_Struct(obj, type, sval)
+
+C¤Î¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤ÏÊÑ¿ôsval¤ËÂåÆþ¤µ¤ì¤Þ¤¹¡¥
+
+¤³¤ì¤é¤ÎData¤Î»È¤¤Êý¤Ï¤Á¤ç¤Ã¤Èʬ¤«¤ê¤Ë¤¯¤¤¤Î¤Ç¡¤¸å¤ÇÀâÌÀ¤¹¤ë
+ÎãÂê¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡¥
+
+4¡¥Example - Create dbm module
+
+¤³¤³¤Þ¤Ç¤ÎÀâÌÀ¤Ç¤È¤ê¤¢¤¨¤º³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Ïºî¤ì¤ë¤Ï¤º¤Ç¤¹¡¥
+ruby¤Îext¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤¹¤Ç¤Ë´Þ¤Þ¤ì¤Æ¤¤¤ëdbm¥â¥¸¥å¡¼¥ë¤òÎã¤Ë
+¤·¤ÆÃʳ¬Åª¤ËÀâÌÀ¤·¤Þ¤¹¡¥
+
+(1) make the directory
+
+  % mkdir ext/dbm
+
+ruby¤òŸ³«¤·¤¿¥Ç¥£¥ì¥¯¥È¥ê¤Î²¼¡¤ext¥Ç¥£¥ì¥¯¥È¥ê¤ÎÃæ¤Ë³ÈÄ¥¥â
+¥¸¥å¡¼¥ëÍѤΥǥ£¥ì¥¯¥È¥ê¤òºî¤ê¤Þ¤¹¡¥Ì¾Á°¤ÏŬÅö¤ËÁª¤ó¤Ç¹½¤¤¤Þ
+¤»¤ó¡¥
+
+(2) create MANIFEST file
+
+  % cd ext/dbm
+  % touch MANIFEST
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Î²¼¤Ë¤ÏMANIFEST¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤¬
+ɬÍפʤΤǡ¤¤È¤ê¤¢¤¨¤º¶õ¤Î¥Õ¥¡¥¤¥ë¤òºî¤Ã¤Æ¤ª¤­¤Þ¤¹¡¥¸å¤Ç¤³¤Î
+¥Õ¥¡¥¤¥ë¤Ë¤ÏɬÍפʥե¡¥¤¥ë°ìÍ÷¤¬Æþ¤ë¤³¤È¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+MANIFEST¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤Ï¡¤make¤Î»þ¤Ë¥Ç¥£¥ì¥¯¥È¥ê¤¬³ÈÄ¥¥â¥¸¥å¡¼
+¥ë¤ò´Þ¤ó¤Ç¤¤¤ë¤«¤É¤¦¤«È½Äꤹ¤ë¤¿¤á¤Ë»È¤ï¤ì¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+(3) design the library
+
+¤Þ¤¢¡¤ÅöÁ³¤Ê¤ó¤Ç¤¹¤±¤É¡¤¤É¤¦¤¤¤¦µ¡Ç½¤ò¼Â¸½¤¹¤ë¤«¤É¤¦¤«¤Þ¤ºÀß
+·×¤¹¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥¤É¤ó¤Ê¥¯¥é¥¹¤ò¤Ä¤¯¤ë¤«¡¤¤½¤Î¥¯¥é¥¹¤Ë¤Ï
+¤É¤ó¤Ê¥á¥½¥Ã¥É¤¬¤¢¤ë¤«¡¤¥¯¥é¥¹¤¬Ä󶡤¹¤ëÄê¿ô¤Ê¤É¤Ë¤Ä¤¤¤ÆÀß·×
+¤·¤Þ¤¹¡¥dbm¥¯¥é¥¹¤Ë¤Ä¤¤¤Æ¤Ïext/dbm.doc¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡¥
+
+(4) write C code.
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ëËÜÂΤȤʤëC¸À¸ì¤Î¥½¡¼¥¹¤ò½ñ¤­¤Þ¤¹¡¥C¸À¸ì¤Î¥½¡¼
+¥¹¤¬¤Ò¤È¤Ä¤Î»þ¤Ë¤Ï¡Ö¥â¥¸¥å¡¼¥ë̾.c¡×¤òÁª¤Ö¤ÈÎɤ¤¤Ç¤·¤ç¤¦¡¥C
+¸À¸ì¤Î¥½¡¼¥¹¤¬Ê£¿ô¤Î¾ì¹ç¤Ë¤ÏµÕ¤Ë¡Ö¥â¥¸¥å¡¼¥ë̾.c¡×¤È¤¤¤¦¥Õ¥¡
+¥¤¥ë̾¤ÏÈò¤±¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤È¥â¥¸¥å¡¼
+¥ëÀ¸À®»þ¤ËÃæ´ÖŪ¤ËÀ¸À®¤µ¤ì¤ë¡Ö¥â¥¸¥å¡¼¥ë̾.o¡×¤È¤¤¤¦¥Õ¥¡¥¤¥ë
+¤È¤¬¾×Æͤ¹¤ë¤«¤é¤Ç¤¹¡¥
+
+ruby¤Ï³ÈÄ¥¥â¥¸¥å¡¼¥ë¤ò¥í¡¼¥É¤¹¤ë»þ¤Ë¡ÖInit_¥â¥¸¥å¡¼¥ë̾¡×¤È
+¤¤¤¦´Ø¿ô¤ò¼«Æ°Åª¤Ë¼Â¹Ô¤·¤Þ¤¹¡¥dbm¥â¥¸¥å¡¼¥ë¤Î¾ì¹ç¡ÖInit_dbm¡×
+¤Ç¤¹¡¥¤³¤Î´Ø¿ô¤ÎÃæ¤Ç¥¯¥é¥¹¡¤¥â¥¸¥å¡¼¥ë¡¤¥á¥½¥Ã¥É¡¤Äê¿ô¤Ê¤É¤Î
+ÄêµÁ¤ò¹Ô¤¤¤Þ¤¹¡¥dbm.c¤«¤é°ìÉô°úÍѤ·¤Þ¤¹¡¥
+
+--
+Init_dbm()
+{
+    /* DBM¥¯¥é¥¹¤òÄêµÁ¤¹¤ë */
+    cDBM = rb_define_class("DBM", cObject);
+    /* DBM¤ÏEnumerate¥â¥¸¥å¡¼¥ë¤ò¥¤¥ó¥¯¥ë¡¼¥É¤¹¤ë */
+    rb_include_module(cDBM, mEnumerable);
+
+    /* DBM¥¯¥é¥¹¤Î¥¯¥é¥¹¥á¥½¥Ã¥Éopen(): °ú¿ô¤ÏC¤ÎÇÛÎó¤Ç¼õ¤±¤ë */
+    rb_define_singleton_method(cDBM, "open", fdbm_s_open, -1);
+
+    /* DBM¥¯¥é¥¹¤Î¥á¥½¥Ã¥Éclose(): °ú¿ô¤Ï¤Ê¤· */
+    rb_define_method(cDBM, "close", fdbm_close, 0);
+    /* DBM¥¯¥é¥¹¤Î¥á¥½¥Ã¥É[]: °ú¿ô¤Ï1¸Ä */
+    rb_define_method(cDBM, "[]", fdbm_fetch, 1);
+		:
+
+    /* DBM¥Ç¡¼¥¿¤ò³ÊǼ¤¹¤ë¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô̾¤Î¤¿¤á¤ÎID */
+    id_dbm = rb_intern("dbm");
+}
+--
+
+DBM¥â¥¸¥å¡¼¥ë¤Ïdbm¤Î¥Ç¡¼¥¿¤ÈÂбþ¤¹¤ë¥ª¥Ö¥¸¥§¥¯¥È¤Ë¤Ê¤ë¤Ï¤º¤Ç
+¤¹¤«¤é¡¤C¤ÎÀ¤³¦¤Îdbm¤òruby¤ÎÀ¤³¦¤Ë¼è¤ê¹þ¤àɬÍפ¬¤¢¤ê¤Þ¤¹¡¥
+
+
+dbm.c¤Ç¤ÏData_Make_Struct¤ò°Ê²¼¤Î¤è¤¦¤Ë»È¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+struct dbmdata {
+    int  di_size;
+    DBM *di_dbm;
+};
+
+
+obj = Data_Make_Struct(class,struct dbmdata,0,free_dbm,dbmp);
+--
+
+¤³¤³¤Ç¤Ïdbmstruct¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤òData¤Ë¥«¥×¥»¥ë²½¤·¤Æ¤¤
+¤Þ¤¹¡¥DBM*¤òľÀÜ¥«¥×¥»¥ë²½¤·¤Ê¤¤¤Î¤Ïclose()¤·¤¿»þ¤Î½èÍý¤ò¹Í
+¤¨¤Æ¤Î¤³¤È¤Ç¤¹¡¥
+
+Data¥ª¥Ö¥¸¥§¥¯¥È¤«¤édbmstruct¹½Â¤ÂΤΥݥ¤¥ó¥¿¤ò¼è¤ê½Ð¤¹¤¿¤á
+¤Ë°Ê²¼¤Î¥Þ¥¯¥í¤ò»È¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+#define GetDBM(obj, dbmp) {\
+    Data_Get_Struct(obj, struct dbmdata, dbmp);\
+    if (dbmp->di_dbm == 0) closed_dbm();\
+}
+--
+
+¤Á¤ç¤Ã¤ÈÊ£»¨¤Ê¥Þ¥¯¥í¤Ç¤¹¤¬¡¤Íפ¹¤ë¤Ëdbmdata¹½Â¤ÂΤΥݥ¤¥ó¥¿
+¤Î¼è¤ê½Ð¤·¤È¡¤close¤µ¤ì¤Æ¤¤¤ë¤«¤É¤¦¤«¤Î¥Á¥§¥Ã¥¯¤ò¤Þ¤È¤á¤Æ¤¤
+¤ë¤À¤±¤Ç¤¹¡¥
+
+DBM¥¯¥é¥¹¤Ë¤Ï¤¿¤¯¤µ¤ó¥á¥½¥Ã¥É¤¬¤¢¤ê¤Þ¤¹¤¬¡¤Ê¬Îह¤ë¤È3¼ïÎà¤Î
+°ú¿ô¤Î¼õ¤±Êý¤¬¤¢¤ê¤Þ¤¹¡¥¤Ò¤È¤Ä¤Ï°ú¿ô¤Î¿ô¤¬¸ÇÄê¤Î¤â¤Î¤Ç¡¤Îã¤È
+¤·¤Æ¤Ïdelete¥á¥½¥Ã¥É¤¬¤¢¤ê¤Þ¤¹¡¥delete¥á¥½¥Ã¥É¤ò¼ÂÁõ¤·¤Æ¤¤¤ë
+fdbm_delete()¤Ï¤³¤Î¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+static VALUE
+fdbm_delete(obj, keystr)
+    VALUE obj, keystr;
+{
+	:
+}
+--
+
+°ú¿ô¤Î¿ô¤¬¸ÇÄê¤Î¥¿¥¤¥×¤ÏÂè1°ú¿ô¤¬self¡¤Âè2°ú¿ô°Ê¹ß¤¬¥á¥½¥Ã¥É
+¤Î°ú¿ô¤È¤Ê¤ê¤Þ¤¹¡¥
+
+°ú¿ô¤Î¿ô¤¬ÉÔÄê¤Î¤â¤Î¤ÏC¤ÎÇÛÎó¤Ç¼õ¤±¤ë¤â¤Î¤Èruby¤ÎÇÛÎó¤Ç¼õ¤±
+¤ë¤â¤Î¤È¤¬¤¢¤ê¤Þ¤¹¡¥dbm¥â¥¸¥å¡¼¥ë¤ÎÃæ¤Ç¡¤C¤ÎÇÛÎó¤Ç¼õ¤±¤ë¤â¤Î
+¤ÏDBM¤Î¥¯¥é¥¹¥á¥½¥Ã¥É¤Ç¤¢¤ëopen()¤Ç¤¹¡¥¤³¤ì¤ò¼ÂÁõ¤·¤Æ¤¤¤ë´Ø
+¿ôfdbm_s_open()¤Ï¤³¤¦¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+static VALUE
+fdbm_s_open(argc, argv, class)
+    int argc;
+    VALUE *argv;
+    VALUE class;
+{
+	:
+    if (rb_scan_args(argc, argv, "11", &file, &vmode) == 1) {
+	mode = 0666;		/* default value */
+    }
+	:
+}
+--
+
+¤³¤Î¥¿¥¤¥×¤Î´Ø¿ô¤ÏÂè1°ú¿ô¤¬Í¿¤¨¤é¤ì¤¿°ú¿ô¤Î¿ô¡¤Âè2°ú¿ô¤¬Í¿¤¨
+¤é¤ì¤¿°ú¿ô¤ÎÆþ¤Ã¤Æ¤¤¤ëÇÛÎó¤Ë¤Ê¤ê¤Þ¤¹¡¥self¤ÏÂè3°ú¿ô¤È¤·¤ÆÍ¿
+¤¨¤é¤ì¤Þ¤¹¡¥
+
+¤³¤ÎÇÛÎó¤ÇÍ¿¤¨¤é¤ì¤¿°ú¿ô¤ò²òÀϤ¹¤ë¤¿¤á¤Î´Ø¿ô¤¬open()¤Ç¤â»È¤ï
+¤ì¤Æ¤¤¤ërb_scan_args()¤Ç¤¹¡¥Âè3°ú¿ô¤Ë»ØÄꤷ¤¿¥Õ¥©¡¼¥Þ¥Ã¥È¤Ë
+½¾¤¤¡¤Âè4ÊÑ¿ô°Ê¹ß¤Ë»ØÄꤷ¤¿ÊÑ¿ô¤ËÃͤòÂåÆþ¤·¤Æ¤¯¤ì¤Þ¤¹¡¥¤³¤Î
+¥Õ¥©¡¼¥Þ¥Ã¥È¤Ï¡¤Âè1ʸ»úÌܤ¬¾Êά¤Ç¤­¤Ê¤¤°ú¿ô¤Î¿ô¡¤Âè2ʸ»úÌܤ¬
+¾Êά¤Ç¤­¤ë°ú¿ô¤Î¿ô¡¤Âè3ʸ»úÌܤ¬Âбþ¤¹¤ëÁê¼ê¤¬Ìµ¤¤¤¢¤Þ¤ê¤Î°ú
+¿ô¤¬¤¢¤ë¤«¤É¤¦¤«¤ò¼¨¤¹"*"¤Ç¤¹¡¥2ʸ»úÌܤÈ3ʸ»úÌܤϾÊά¤Ç¤­¤Þ
+¤¹¡¥dbm.c¤ÎÎã¤Ç¤Ï¡¤¥Õ¥©¡¼¥Þ¥Ã¥È¤Ï"11"¤Ç¤¹¤«¤é¡¤°ú¿ô¤ÏºÇÄã1¤Ä
+¤Ç¡¤2¤Ä¤Þ¤Çµö¤µ¤ì¤ë¤È¤¤¤¦°ÕÌ£¤Ë¤Ê¤ê¤Þ¤¹¡¥¾Êά¤µ¤ì¤Æ¤¤¤ë»þ¤Î
+ÊÑ¿ô¤ÎÃͤÏnil(C¸À¸ì¤Î¥ì¥Ù¥ë¤Ç¤ÏQnil)¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+ruby¤ÎÇÛÎó¤Ç°ú¿ô¤ò¼õ¤±¼è¤ë¤â¤Î¤Ïindexes¤¬¤¢¤ê¤Þ¤¹¡¥¼ÂÁõ¤Ï¤³
+¤¦¤Ç¤¹¡¥
+
+--
+static VALUE
+fdbm_indexes(obj, args)
+    VALUE obj;
+    struct RArray *args;
+{
+	:
+}
+--
+
+Âè1°ú¿ô¤Ïself¡¤Âè2°ú¿ô¤Ïruby¤ÎÇÛÎó¤Ç¤¹¡¥¤³¤³¤Ç¤Ï¥­¥ã¥¹¥È¤ò¸º
+¤é¤¹¤¿¤á struct RArray* ¤Ç¼õ¤±¤Æ¤¤¤Þ¤¹¤¬¡¤VALUE¤Ç¤âƱ¤¸¤³¤È
+¤Ç¤¹¡¥
+
+** Ãí°Õ»ö¹à
+
+ruby¤È¶¦Í­¤Ï¤·¤Ê¤¤¤¬ruby¤Î¥ª¥Ö¥¸¥§¥¯¥È¤ò³ÊǼ¤¹¤ë²ÄǽÀ­¤Î¤¢¤ë
+C¤ÎÂç°èÊÑ¿ô¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤Ã¤Æruby¥¤¥ó¥¿¥×¥ê¥¿¤ËÊÑ¿ô¤Î¸ºß
+¤ò¶µ¤¨¤Æ¤¢¤²¤Æ¤¯¤À¤µ¤¤¡¥¤Ç¤Ê¤¤¤ÈGC¤Ç¥È¥é¥Ö¥ë¤òµ¯¤³¤·¤Þ¤¹¡¥
+
+  void rb_global_variable(VALUE *var)
+
+(5) prepare extconf.rb
+
+¤â¤·¥Ç¥£¥ì¥¯¥È¥ê¤Ë¡Öextconf.rb¡×¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤¹¤ì¤Ð¡¤
+make»þ¤Ë¼Â¹Ô¤µ¤ì¤Þ¤¹¡¥¤Ê¤±¤ì¤ÐŬÅö¤ËMakefile¤¬À¸À®¤µ¤ì¤Þ¤¹¡¥
+
+extconf.rb¤Ï¥â¥¸¥å¡¼¥ë¤Î¥³¥ó¥Ñ¥¤¥ë¤ËɬÍפʾò·ï¤Î¥Á¥§¥Ã¥¯¤Ê¤É
+¤ò¹Ô¤¦¤³¤È¤¬ÌÜŪ¤Ç¤¹¡¥extconf.rb¤ÎÃæ¤Ç¤Ï°Ê²¼¤Îruby´Ø¿ô¤ò»È¤¦
+¤³¤È¤¬½ÐÍè¤Þ¤¹¡¥
+
+  have_library(lib, func): ¥é¥¤¥Ö¥é¥ê¤Î¸ºß¥Á¥§¥Ã¥¯
+  have_func(func): ´Ø¿ô¤Î¸ºß¥Á¥§¥Ã¥¯
+  have_header(header): ¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Î¸ºß¥Á¥§¥Ã¥¯
+  create_makefile(target): Makefile¤ÎÀ¸À®
+
+°Ê²¼¤ÎÊÑ¿ô¤ò»È¤¦¤³¤È¤¬¤Ç¤­¤Þ¤¹¡¥
+
+  $CFLAGS: ¥³¥ó¥Ñ¥¤¥ë»þ¤ËÄɲÃŪ¤Ë»ØÄꤹ¤ë¥Õ¥é¥°(-I¤Ê¤É)
+  $LDFLAGS: ¥ê¥ó¥¯»þ¤ËÄɲÃŪ¤Ë»ØÄꤹ¤ë¥Õ¥é¥°(-L¤Ê¤É)
+
+¥â¥¸¥å¡¼¥ë¤ò¥³¥ó¥Ñ¥¤¥ë¤¹¤ë¾ò·ï¤¬Â·¤ï¤Ê¤º¡¤¤½¤Î¥â¥¸¥å¡¼¥ë¤Ï¥³
+¥ó¥Ñ¥¤¥ë¤·¤Ê¤¤»þ¤Ë¤Ïcreate_makefile¤ò¸Æ¤Ð¤Ê¤±¤ì¤ÐMakefile¤Ï
+À¸À®¤µ¤ì¤º¡¤¥³¥ó¥Ñ¥¤¥ë¤â¹Ô¤ï¤ì¤Þ¤»¤ó¡¥
+
+(6) prepare depend (optional)
+
+¤â¤·¡¤¥Ç¥£¥ì¥¯¥È¥ê¤Ëdepend¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤¹¤ì¤Ð¡¤
+Makefile¤¬°Í¸´Ø·¸¤ò¥Á¥§¥Ã¥¯¤·¤Æ¤¯¤ì¤Þ¤¹¡¥
+
+ % gcc -MM *.c > depend
+
+¤Ê¤É¤Çºî¤ë¤³¤È¤¬½ÐÍè¤Þ¤¹¡¥¤¢¤Ã¤Æ»¤Ï̵¤¤¤Ç¤·¤ç¤¦¡¥
+
+(7) MANIFEST¥Õ¥¡¥¤¥ë¤Ë¥Õ¥¡¥¤¥ë̾¤òÆþ¤ì¤ë
+
+  % ls > MANIFEST
+  % vi MANIFEST
+
+*.o, *~¤Ê¤ÉÉÔɬÍפʥե¡¥¤¥ë°Ê³°¤ÏMANIFEST¤ËÄɲ䷤Ƥª¤­¤Þ¤¹¡¥
+make»þ¤Ë¤ÏMANIFEST¤ÎÆâÍƤϻ²¾È¤·¤Þ¤»¤ó¤Î¤Ç¡¤¶õ¤Î¤Þ¤Þ¤Ç¤âÌäÂê
+¤Ïµ¯¤­¤Þ¤»¤ó¤¬¡¤¥Ñ¥Ã¥±¡¼¥¸¥ó¥°¤Î»þ¤Ë»²¾È¤¹¤ë¤³¤È¤¬¤¢¤ë¤Î¤È¡¤
+ɬÍפʥե¡¥¤¥ë¤ò¶èÊ̤Ǥ­¤ë¤Î¤Ç¡¤ÍÑ°Õ¤·¤Æ¤ª¤¤¤¿Êý¤¬Îɤ¤¤Ç¤·¤ç
+¤¦¡¥
+
+(8) make
+
+ruby¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Çmake¤ò¼Â¹Ô¤¹¤ë¤ÈMakefile¤òÀ¸À®¤«¤émake¡¤
+ɬÍפˤè¤Ã¤Æ¤Ï¤½¤Î¥â¥¸¥å¡¼¥ë¤Îruby¤Ø¤Î¥ê¥ó¥¯¤Þ¤Ç¼«Æ°Åª¤Ë¼Â¹Ô
+¤·¤Æ¤¯¤ì¤Þ¤¹¡¥extconf.rb¤ò½ñ¤­´¹¤¨¤ë¤Ê¤É¤·¤ÆMakefile¤ÎºÆÀ¸À®
+¤¬É¬Íפʻþ¤Ï¤Þ¤¿ruby¥Ç¥£¥ì¥¯¥È¥ê¤Çmake¤·¤Æ¤¯¤À¤µ¤¤¡¥
+
+(9) debug
+
+¤Þ¤¢¡¤¥Ç¥Ð¥Ã¥°¤·¤Ê¤¤¤ÈÆ°¤«¤Ê¤¤¤Ç¤·¤ç¤¦¤Í¡¥ext/Setup¤Ë¥Ç¥£¥ì
+¥¯¥È¥ê̾¤ò½ñ¤¯¤ÈÀÅŪ¤Ë¥ê¥ó¥¯¤¹¤ë¤Î¤Ç¥Ç¥Ð¥Ã¥¬¤¬»È¤¨¤ë¤è¤¦¤Ë¤Ê
+¤ê¤Þ¤¹¡¥¤½¤Îʬ¥³¥ó¥Ñ¥¤¥ë¤¬ÃÙ¤¯¤Ê¤ê¤Þ¤¹¤±¤É¡¥
+
+(10) done, now you have the extension module
+
+¸å¤Ï¤³¤Ã¤½¤ê»È¤¦¤Ê¤ê¡¤¹­¤¯¸ø³«¤¹¤ë¤Ê¤ê¡¤Çä¤ë¤Ê¤ê¡¤¤´¼«Í³¤Ë¤ª
+»È¤¤¤¯¤À¤µ¤¤¡¥ruby¤Îºî¼Ô¤Ï³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Ë´Ø¤·¤Æ°ìÀڤθ¢Íø¤ò
+¼çÄ¥¤·¤Þ¤»¤ó¡¥
+
+Appendix A. ruby¤Î¥½¡¼¥¹¥³¡¼¥É¤ÎʬÎà
+
+ruby¤Î¥½¡¼¥¹¤Ï¤¤¤¯¤Ä¤«¤ËʬÎह¤ë¤³¤È¤¬½ÐÍè¤Þ¤¹¡¥¤³¤Î¤¦¤Á¥¯¥é
+¥¹¥é¥¤¥Ö¥é¥ê¤ÎÉôʬ¤Ï´ðËÜŪ¤Ë³ÈÄ¥¥â¥¸¥å¡¼¥ë¤ÈƱ¤¸ºî¤êÊý¤Ë¤Ê¤Ã
+¤Æ¤¤¤Þ¤¹¡¥¤³¤ì¤é¤Î¥½¡¼¥¹¤Ïº£¤Þ¤Ç¤ÎÀâÌÀ¤Ç¤Û¤È¤ó¤ÉÍý²ò¤Ç¤­¤ë¤È
+»×¤¤¤Þ¤¹¡¥
+
+coore ruby language
+
+  class.c
+  error.c
+  eval.c
+  gc.c
+  object.c
+  parse.y
+  variable.c
+
+utility functions
+
+  dln.c
+  fnmatch.c
+  glob.c
+  regex.c
+  st.c
+  util.c
+
+ruby interpreter implementation
+
+  dmyext.c
+  inits.c
+  main.c
+  ruby.c
+  version.c
+
+class library
+
+  array.c
+  bignum.c
+  compar.c
+  dir.c
+  enum.c
+  file.c
+  hash.c
+  io.c
+  math.c
+  numeric.c
+  pack.c
+  process.c
+  random.c
+  range.c
+  re.c
+  signal.c
+  sprintf.c
+  string.c
+  struct.c
+  time.c
+
+Appendix B. ³ÈÄ¥ÍÑ´Ø¿ô¥ê¥Õ¥¡¥ì¥ó¥¹
+
+C¸À¸ì¤«¤éruby¤Îµ¡Ç½¤òÍøÍѤ¹¤ëAPI¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¢¤ë¡¥
+
+** ·¿
+
+ VALUE
+
+ruby¥ª¥Ö¥¸¥§¥¯¥È¤òɽ¸½¤¹¤ë·¿¡¥É¬Íפ˱þ¤¸¤Æ¥­¥ã¥¹¥È¤·¤ÆÍѤ¤¤ë¡¥
+ÁȤ߹þ¤ß·¿¤òɽ¸½¤¹¤ëC¤Î·¿¤Ïruby.h¤Ëµ­½Ò¤·¤Æ¤¢¤ëR¤Ç»Ï¤Þ¤ë¹½Â¤
+ÂΤǤ¢¤ë¡¥VALUE·¿¤ò¤³¤ì¤é¤Ë¥­¥ã¥¹¥È¤¹¤ë¤¿¤á¤ËR¤Ç»Ï¤Þ¤ë¹½Â¤ÂÎ
+̾¤òÁ´¤ÆÂçʸ»ú¤Ë¤·¤¿Ì¾Á°¤Î¥Þ¥¯¥í¤¬ÍÑ°Õ¤µ¤ì¤Æ¤¤¤ë¡¥
+
+** Variables and constants
+
+ Qnil
+
+const: nil object
+
+ TRUE
+
+const: TRUE object(default true value)
+
+ FALSE
+
+const: FALSE object
+
+** C¥Ç¡¼¥¿¤Î¥«¥×¥»¥ë²½
+
+ Data_Wrap_Struct(VALUE class, void (*mark)(), void (*free)(), void *sval)
+
+C¤ÎǤ°Õ¤Î¥Ý¥¤¥ó¥¿¤ò¥«¥×¥»¥ë²½¤·¤¿ruby¥ª¥Ö¥¸¥§¥¯¥È¤òÊÖ¤¹¡¥¤³
+¤Î¥Ý¥¤¥ó¥¿¤¬ruby¤«¤é¥¢¥¯¥»¥¹¤µ¤ì¤Ê¤¯¤Ê¤Ã¤¿»þ¡¤free¤Ç»ØÄꤷ¤¿
+´Ø¿ô¤¬¸Æ¤Ð¤ì¤ë¡¥¤Þ¤¿¡¤¤³¤Î¥Ý¥¤¥ó¥¿¤Î»Ø¤¹¥Ç¡¼¥¿¤¬Â¾¤Îruby¥ª¥Ö
+¥¸¥§¥¯¥È¤ò»Ø¤·¤Æ¤¤¤ë¾ì¹ç¡¤mark¤Ë»ØÄꤹ¤ë´Ø¿ô¤Ç¥Þ¡¼¥¯¤¹¤ëɬÍ×
+¤¬¤¢¤ë¡¥
+
+ Data_Make_Struct(class, type, mark, free, sval)
+
+type·¿¤Î¥á¥â¥ê¤òmalloc¤·¡¤ÊÑ¿ôsval¤ËÂåÆþ¤·¤¿¸å¡¤¤½¤ì¤ò¥«¥×¥»
+¥ë²½¤·¤¿¥Ç¡¼¥¿¤òÊÖ¤¹¥Þ¥¯¥í¡¥
+
+ Data_Get_Struct(data, type, sval)
+
+data¤«¤étype·¿¤Î¥Ý¥¤¥ó¥¿¤ò¼è¤ê½Ð¤·ÊÑ¿ôsval¤ËÂåÆþ¤¹¤ë¥Þ¥¯¥í¡¥
+
+** ¥¯¥é¥¹/¥â¥¸¥å¡¼¥ëÄêµÁ
+
+ VALUE rb_define_class(char *name, VALUE super)
+
+super¤Î¥µ¥Ö¥¯¥é¥¹¤È¤·¤Æ¿·¤·¤¤ruby¥¯¥é¥¹¤òÄêµÁ¤¹¤ë¡¥
+
+ VALUE rb_define_class_under(VALUE module, char *name, VALUE super)
+
+super¤Î¥µ¥Ö¥¯¥é¥¹¤È¤·¤Æ¿·¤·¤¤ruby¥¯¥é¥¹¤òÄêµÁ¤·¡¤module¤ÎÄê
+¿ô¤È¤·¤ÆÄêµÁ¤¹¤ë¡¥
+
+ VALUE rb_define_module(char *name)
+
+¿·¤·¤¤ruby¥â¥¸¥å¡¼¥ë¤òÄêµÁ¤¹¤ë¡¥
+
+ VALUE rb_define_module_under(VALUE module, char *name, VALUE super)
+
+¿·¤·¤¤ruby¥â¥¸¥å¡¼¥ë¤òÄêµÁ¤·¡¤module¤ÎÄê¿ô¤È¤·¤ÆÄêµÁ¤¹¤ë¡¥
+
+ void rb_include_module(VALUE class, VALUE module)
+
+¥â¥¸¥å¡¼¥ë¤ò¥¤¥ó¥¯¥ë¡¼¥É¤¹¤ë¡¥class¤¬¤¹¤Ç¤Ëmodule¤ò¥¤¥ó¥¯¥ë¡¼
+¥É¤·¤Æ¤¤¤ë»þ¤Ë¤Ï²¿¤â¤·¤Ê¤¤(¿½Å¥¤¥ó¥¯¥ë¡¼¥É¤Î¶Ø»ß)¡¥
+
+ void rb_extend_object(VALUE object, VALUE module)
+
+¥ª¥Ö¥¸¥§¥¯¥È¤ò¥â¥¸¥å¡¼¥ë(¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë¥á¥½¥Ã¥É)¤Ç³ÈÄ¥¤¹¤ë¡¥
+
+** Âç°èÊÑ¿ôÄêµÁ
+
+ void rb_define_variable(char *name, VALUE *var)
+
+ruby¤ÈC¤È¤Ç¶¦Í­¤¹¤ë¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥ÊÑ¿ô̾¤¬`$'¤Ç»Ï
+¤Þ¤é¤Ê¤¤»þ¤Ë¤Ï¼«Æ°Åª¤ËÄɲ䵤ì¤ë¡¥name¤È¤·¤Æruby¤Î¼±Ê̻ҤȤ·
+¤Æµö¤µ¤ì¤Ê¤¤Ê¸»ú(Î㤨¤Ð` ')¤ò´Þ¤à¾ì¹ç¤Ë¤Ïruby¥×¥í¥°¥é¥à¤«¤é
+¤Ï¸«¤¨¤Ê¤¯¤Ê¤ë¡¥
+
+ void rb_define_readonly_variable(char *name, VALUE *var)
+
+ruby¤ÈC¤È¤Ç¶¦Í­¤¹¤ëread only¤Î¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥read
+only¤Ç¤¢¤ë¤³¤È°Ê³°¤Ïrb_define_variable()¤ÈƱ¤¸¡¥
+
+ void rb_define_virtual_variable(char *name,
+				VALUE (*getter)(), VALUE (*setter)())
+
+´Ø¿ô¤Ë¤è¤Ã¤Æ¼Â¸½¤µ¤ì¤ërubyÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥ÊÑ¿ô¤¬»²¾È¤µ¤ì¤¿»þ
+¤Ë¤Ïgetter¤¬¡¤ÊÑ¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì¤¿»þ¤Ë¤Ïsetter¤¬¸Æ¤Ð¤ì¤ë¡¥
+
+ void rb_define_hooked_variable(char *name, VALUE *var,
+				VALUE (*getter)(), VALUE (*setter)())
+
+´Ø¿ô¤Ë¤è¤Ã¤Æhook¤Î¤Ä¤±¤é¤ì¤¿¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥ÊÑ¿ô¤¬
+»²¾È¤µ¤ì¤¿»þ¤Ë¤Ïgetter¤¬¡¤´Ø¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì¤¿»þ¤Ë¤Ïsetter
+¤¬¸Æ¤Ð¤ì¤ë¡¥getter¤äsetter¤Ë0¤ò»ØÄꤷ¤¿»þ¤Ë¤Ïhook¤ò»ØÄꤷ¤Ê
+¤¤¤Î¤ÈƱ¤¸»ö¤Ë¤Ê¤ë¡¥
+
+ void rb_global_variable(VALUE *var)
+
+GC¤Î¤¿¤á¡¤ruby¥×¥í¥°¥é¥à¤«¤é¤Ï¥¢¥¯¥»¥¹¤µ¤ì¤Ê¤¤¤¬, ruby¥ª¥Ö¥¸¥§
+¥¯¥È¤ò´Þ¤àÂç°èÊÑ¿ô¤ò¥Þ¡¼¥¯¤¹¤ë¡¥
+
+** ¥¯¥é¥¹Äê¿ô
+
+ void rb_define_const(VALUE class, char *name, VALUE val)
+
+¥¯¥é¥¹Äê¿ô¤òÄêµÁ¤¹¤ë¡¥
+
+ void rb_define_global_const(char *name, VALUE val)
+
+Âç°èÄê¿ô¤òÄêµÁ¤¹¤ë¡¥
+
+     rb_define_const(cKernal, name, val)
+
+¤ÈƱ¤¸°ÕÌ£¡¥
+
+** ¥á¥½¥Ã¥ÉÄêµÁ
+
+ rb_define_method(VALUE class, char *name, VALUE (*func)(), int argc)
+
+¥á¥½¥Ã¥É¤òÄêµÁ¤¹¤ë¡¥argc¤Ïself¤ò½ü¤¯°ú¿ô¤Î¿ô¡¥argc¤¬-1¤Î»þ, 
+´Ø¿ô¤Ë¤Ï°ú¿ô¤Î¿ô(self¤ò´Þ¤Þ¤Ê¤¤)¤òÂè1°ú¿ô, °ú¿ô¤ÎÇÛÎó¤òÂè2°ú
+¿ô¤È¤¹¤ë·Á¼°¤ÇÍ¿¤¨¤é¤ì¤ë(Âè3°ú¿ô¤Ïself)¡¥argc¤¬-2¤Î»þ, Âè1°ú
+¿ô¤¬self, Âè2°ú¿ô¤¬args(args¤Ï°ú¿ô¤ò´Þ¤àruby¤ÎÇÛÎó)¤È¤¤¤¦·Á
+¼°¤ÇÍ¿¤¨¤é¤ì¤ë¡¥
+
+ rb_define_private_method(VALUE class, char *name, VALUE (*func)(), int argc)
+
+private¥á¥½¥Ã¥É¤òÄêµÁ¤¹¤ë¡¥°ú¿ô¤Ïrb_define_method()¤ÈƱ¤¸¡¥
+
+ rb_define_singleton_method(VALUE class, char *name, VALUE (*func)(), int argc)
+
+Æðۥ᥽¥Ã¥É¤òÄêµÁ¤¹¤ë¡¥°ú¿ô¤Ïrb_define_method()¤ÈƱ¤¸¡¥
+
+ rb_scan_args(int atgc, VALUE *argv, char *fmt, ...)
+
+argc,argv·Á¼°¤ÇÍ¿¤¨¤é¤ì¤¿°ú¿ô¤òʬ²ò¤¹¤ë¡¥fmt¤Ïɬ¿Ü°ú¿ô¤Î¿ô, 
+Éղðú¿ô¤Î¿ô, »Ä¤ê¤Î°ú¿ô¤¬¤¢¤ë¤«¤ò»ØÄꤹ¤ëʸ»úÎó¤Ç, "¿ô»ú¿ô
+»ú*"¤È¤¤¤¦·Á¼°¤Ç¤¢¤ë¡¥ 2 ÈÖÌܤοô»ú¤È"*"¤Ï¤½¤ì¤¾¤ì¾Êά²Äǽ¤Ç
+¤¢¤ë¡¥É¬¿Ü°ú¿ô¤¬°ì¤Ä¤â¤Ê¤¤¾ì¹ç¤Ï0¤ò»ØÄꤹ¤ë¡¥Âè3°ú¿ô°Ê¹ß¤ÏÊÑ
+¿ô¤Ø¤Î¥Ý¥¤¥ó¥¿¤Ç, ³ºÅö¤¹¤ëÍ×ÁǤ¬¤½¤ÎÊÑ¿ô¤Ë³ÊǼ¤µ¤ì¤ë¡¥Éղðú
+¿ô¤ËÂбþ¤¹¤ë°ú¿ô¤¬Í¿¤¨¤é¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¤ÏÊÑ¿ô¤ËQnil¤¬ÂåÆþ¤µ¤ì
+¤ë¡¥
+
+** ruby¥á¥½¥Ã¥É¸Æ¤Ó½Ð¤·
+
+ VALUE rb_funcall(VALUE recv, ID mid, int narg, ...)
+
+¥á¥½¥Ã¥É¸Æ¤Ó½Ð¤·¡¥Ê¸»úÎ󤫤émid¤òÆÀ¤ë¤¿¤á¤Ë¤Ïrb_intern()¤ò»È¤¦¡¥
+
+ VALUE rb_funcall2(VALUE recv, ID mid, int argc, VALUE *argv)
+
+¥á¥½¥Ã¥É¸Æ¤Ó½Ð¤·¡¥°ú¿ô¤òargc,argv·Á¼°¤ÇÅϤ¹¡¥
+
+ VALUE rb_eval_string(char *str)
+
+ʸ»úÎó¤òruby¤È¥¹¥¯¥ê¥×¥È¤·¤Æ¥³¥ó¥Ñ¥¤¥ë¡¦¼Â¹Ô¤¹¤ë¡¥
+
+ ID rb_intern(char *name)
+
+ʸ»úÎó¤ËÂбþ¤¹¤ëID¤òÊÖ¤¹¡¥
+
+ char *rb_id2name(ID id)
+
+ID¤ËÂбþ¤¹¤ëʸ»úÎó¤òÊÖ¤¹(¥Ç¥Ð¥Ã¥°ÍÑ)¡¥
+
+ char *rb_class2name(VALUE class)
+
+class¤Î̾Á°¤òÊÖ¤¹(¥Ç¥Ð¥Ã¥°ÍÑ)¡¥class¤¬Ì¾Á°¤ò»ý¤¿¤Ê¤¤»þ¤Ë¤Ï, 
+ÁÄÀè¤òÁ̤äÆ̾Á°¤ò»ý¤Ä¥¯¥é¥¹¤Î̾Á°¤òÊÖ¤¹¡¥
+
+** ¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô
+
+ VALUE rb_iv_get(VALUE obj, char *name)
+
+obj¤Î¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô¤ÎÃͤòÆÀ¤ë¡¥`@'¤Ç»Ï¤Þ¤é¤Ê¤¤¥¤¥ó¥¹¥¿¥ó¥¹
+ÊÑ¿ô¤Ï ruby¥×¥í¥°¥é¥à¤«¤é¥¢¥¯¥»¥¹¤Ç¤­¤Ê¤¤¡Ö±£¤ì¤¿¡×¥¤¥ó¥¹¥¿
+¥ó¥¹ÊÑ¿ô¤Ë¤Ê¤ë¡¥
+
+ VALUE rb_iv_set(VALUE obj, char *name, VALUE val)
+
+obj¤Î¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô¤òval¤Ë¥»¥Ã¥È¤¹¤ë¡¥
+
+** À©¸æ¹½Â¤
+
+ VALUE rb_iterate(VALUE (*func1)(), void *arg1, VALUE (*func2)(), void *arg2)
+
+func2¤ò¥Ö¥í¥Ã¥¯¤È¤·¤ÆÀßÄꤷ, func1¤ò¥¤¥Æ¥ì¡¼¥¿¤È¤·¤Æ¸Æ¤Ö¡¥ 
+func1¤Ë¤Ï arg1¤¬°ú¿ô¤È¤·¤ÆÅϤµ¤ì, func2¤Ë¤ÏÂè1°ú¿ô¤Ë¥¤¥Æ¥ì¡¼
+¥¿¤«¤éÍ¿¤¨¤é¤ì¤¿ÃÍ, Âè2°ú¿ô¤Ëarg2¤¬ÅϤµ¤ì¤ë¡¥
+ 
+ VALUE rb_yield(VALUE val)
+
+val¤òÃͤȤ·¤Æ¥¤¥Æ¥ì¡¼¥¿¥Ö¥í¥Ã¥¯¤ò¸Æ¤Ó½Ð¤¹¡¥
+
+ VALUE rb_rescue(VALUE (*func1)(), void *arg1, VALUE (*func2)(), void *arg2)
+
+´Ø¿ôfunc1¤òarg1¤ò°ú¿ô¤Ë¸Æ¤Ó½Ð¤¹¡¥func1¤Î¼Â¹ÔÃæ¤ËÎã³°¤¬È¯À¸¤·
+¤¿»þ¤Ë¤Ï func2¤òarg2¤ò°ú¿ô¤È¤·¤Æ¸Æ¤Ö¡¥Ìá¤êÃͤÏÎã³°¤¬È¯À¸¤·¤Ê
+¤«¤Ã¤¿»þ¤Ïfunc1¤ÎÌá¤êÃÍ, Îã³°¤¬È¯À¸¤·¤¿»þ¤Ë¤Ïfunc2¤ÎÌá¤êÃͤÇ
+¤¢¤ë¡¥
+
+ VALUE rb_ensure(VALUE (*func1)(), void *arg1, void (*func2)(), void *arg2)
+
+´Ø¿ôfunc1¤òarg1¤ò°ú¿ô¤È¤·¤Æ¼Â¹Ô¤·, ¼Â¹Ô½ªÎ»¸å(¤¿¤È¤¨Îã³°¤¬È¯
+À¸¤·¤Æ¤â) func2¤òarg2¤ò°ú¿ô¤È¤·¤Æ¼Â¹Ô¤¹¤ë¡¥Ìá¤êÃͤÏfunc1¤ÎÌá
+¤êÃͤǤ¢¤ë(Îã³°¤¬È¯À¸¤·¤¿»þ¤ÏÌá¤é¤Ê¤¤)¡¥
+
+** Îã³°¡¦¥¨¥é¡¼
+
+ void Warning(char *fmt, ...)
+
+verbose»þ¤Ëɸ½à¥¨¥é¡¼½ÐÎϤ˷ٹð¾ðÊó¤òɽ¼¨¤¹¤ë¡¥°ú¿ô¤Ïprintf()¤ÈƱ¤¸¡¥
+
+ void Fail(char *fmt, ...)
+
+Îã³°¤òȯÀ¸¤µ¤»¤ë¡¥°ú¿ô¤Ïprintf()¤ÈƱ¤¸¡¥
+
+ void Fatal(char *fmt, ...)
+
+Ã×̿ŪÎã³°¤òȯÀ¸¤µ¤»¤ë¡¥Ä̾ï¤ÎÎã³°½èÍý¤Ï¹Ô¤Ê¤ï¤ì¤º, ¥¤¥ó¥¿¡¼
+¥×¥ê¥¿¤¬½ªÎ»¤¹¤ë(¤¿¤À¤·ensure¤Ç»ØÄꤵ¤ì¤¿¥³¡¼¥É¤Ï½ªÎ»Á°¤Ë¼Â
+¹Ô¤µ¤ì¤ë)¡¥
+
+ void Bug(char *fmt, ...)
+
+¥¤¥ó¥¿¡¼¥×¥ê¥¿¤Ê¤É¥×¥í¥°¥é¥à¤Î¥Ð¥°¤Ç¤·¤«È¯À¸¤¹¤ë¤Ï¤º¤Î¤Ê¤¤¾õ
+¶·¤Î»þ¸Æ¤Ö¡¥¥¤¥ó¥¿¡¼¥×¥ê¥¿¤Ï¥³¥¢¥À¥ó¥×¤·Ä¾¤Á¤Ë½ªÎ»¤¹¤ë¡¥Îã³°
+½èÍý¤Ï°ìÀڹԤʤï¤ì¤Ê¤¤¡¥
+
+** ruby¤Î½é´ü²½¡¦¼Â¹Ô
+
+ruby¤ò¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ËËä¤á¹þ¤à¾ì¹ç¤Ë¤Ï°Ê²¼¤Î¥¤¥ó¥¿¥Õ¥§¡¼¥¹
+¤ò»È¤¦¡¥Ä̾ï¤Î³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Ë¤ÏɬÍפʤ¤¡¥
+
+ void ruby_init(int argc, char **argv, char **envp)
+
+ruby¥¤¥ó¥¿¥×¥ê¥¿¤Î½é´ü²½¤ò¹Ô¤Ê¤¦¡¥
+
+ void ruby_run()
+
+ruby¥¤¥ó¥¿¥×¥ê¥¿¤ò¼Â¹Ô¤¹¤ë¡¥
+
+ void ruby_script(char *name)
+
+ruby¤Î¥¹¥¯¥ê¥×¥È̾($0)¤òÀßÄꤹ¤ë¡¥
+
+Appendix B. extconf.rb¤Ç»È¤¨¤ë´Ø¿ô¤¿¤Á
+
+extconf.rb¤ÎÃæ¤Ç¤ÏÍøÍѲÄǽ¤Ê¥³¥ó¥Ñ¥¤¥ë¾ò·ï¥Á¥§¥Ã¥¯¤Î´Ø¿ô¤Ï°Ê
+²¼¤ÎÄ̤ê¤Ç¤¢¤ë¡¥
+
+ have_library(lib, func)
+
+´Ø¿ôfunc¤òÄêµÁ¤·¤Æ¤¤¤ë¥é¥¤¥Ö¥é¥êlib¤Î¸ºß¤ò¥Á¥§¥Ã¥¯¤¹¤ë¡¥¥é
+¥¤¥Ö¥é¥ê¤¬Â¸ºß¤¹¤ë»þ¡¤TRUE¤òÊÖ¤¹¡¥
+
+ have_func(func)
+
+´Ø¿ôfunc¤Î¸ºß¤ò¥Á¥§¥Ã¥¯¤¹¤ë¡¥func¤¬É¸½à¤Ç¤Ï¥ê¥ó¥¯¤µ¤ì¤Ê¤¤¥é
+¥¤¥Ö¥é¥êÆâ¤Î¤â¤Î¤Ç¤¢¤ë»þ¤Ë¤ÏÀè¤Ëhave_library¤Ç¤½¤Î¥é¥¤¥Ö¥é¥ê
+¤ò¥Á¥§¥Ã¥¯¤·¤Æ¤ª¤¯»ö¡¥´Ø¿ô¤¬Â¸ºß¤¹¤ë»þTRUE¤òÊÖ¤¹¡¥
+
+ have_header(header)
+
+¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Î¸ºß¤ò¥Á¥§¥Ã¥¯¤¹¤ë¡¥¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤¹¤ë
+»þTRUE¤òÊÖ¤¹¡¥
+
+ create_makefile(target)
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ëÍѤÎMakefile¤òÀ¸À®¤¹¤ë¡¥¤³¤Î´Ø¿ô¤ò¸Æ¤Ð¤Ê¤±¤ì¤Ð
+¤½¤Î¥â¥¸¥å¡¼¥ë¤Ï¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Ê¤¤¡¥target¤Ï¥â¥¸¥å¡¼¥ë̾¤òɽ
+¤¹¡¥
+
+/*
+ * Local variables:
+ * fill-column: 60
+ * end:
+ */
diff --git a/README.EXT.ja b/README.EXT.ja
deleted file mode 100644
index f884ecbb0e..0000000000
--- a/README.EXT.ja
+++ /dev/null
@@ -1 +0,0 @@
-doc/extension.ja.rdoc�移動����
diff --git a/README.EXT.jp b/README.EXT.jp
new file mode 100644
index 0000000000..1f7b1a7ce4
--- /dev/null
+++ b/README.EXT.jp
@@ -0,0 +1,1147 @@
+.\" README.EXT -  -*- Text -*- created at: Mon Aug  7 16:45:54 JST 1995
+
+ruby¤Î³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Îºî¤êÊý¤òÀâÌÀ¤·¤Þ¤¹¡¥
+
+1¡¥´ðÁÃÃμ±
+
+C¤ÎÊÑ¿ô¤Ë¤Ï·¿¤¬¤¢¤ê¡¤¥Ç¡¼¥¿¤Ë¤Ï·¿¤¬¤¢¤ê¤Þ¤»¤ó¡¥¤Ç¤¹¤«¤é¡¤¤¿
+¤È¤¨¤Ð¥Ý¥¤¥ó¥¿¤òint¤ÎÊÑ¿ô¤ËÂåÆþ¤¹¤ë¤È¡¤¤½¤ÎÃͤÏÀ°¿ô¤È¤·¤Æ¼è
+¤ê°·¤ï¤ì¤Þ¤¹¡¥µÕ¤Ëruby¤ÎÊÑ¿ô¤Ë¤Ï·¿¤¬¤Ê¤¯¡¤¥Ç¡¼¥¿¤Ë·¿¤¬¤¢¤ê¤Þ
+¤¹¡¥¤³¤Î°ã¤¤¤Î¤¿¤á¡¤C¤Èruby¤ÏÁê¸ß¤ËÊÑ´¹¤·¤Ê¤±¤ì¤Ð¡¤¤ª¸ß¤¤¤Î
+¥Ç¡¼¥¿¤ò¥¢¥¯¥»¥¹¤Ç¤­¤Þ¤»¤ó¡¥
+
+ruby¤Î¥Ç¡¼¥¿¤ÏVALUE¤È¤¤¤¦C¤Î·¿¤Çɽ¸½¤µ¤ì¤Þ¤¹¡¥VALUE·¿¤Î¥Ç¡¼
+¥¿¤Ï¤½¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤ò¼«Ê¬¤ÇÃΤäƤ¤¤Þ¤¹¡¥¤³¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤È
+¤¤¤¦¤Î¤Ï¥Ç¡¼¥¿(¥ª¥Ö¥¸¥§¥¯¥È)¤Î¼ÂºÝ¤Î¹½Â¤¤ò°ÕÌ£¤·¤Æ¤¤¤Æ¡¤ruby
+¤Î¥¯¥é¥¹¤È¤Ï¤Þ¤¿°ã¤Ã¤¿¤â¤Î¤Ç¤¹¡¥
+
+VALUE¤«¤éC¤Ë¤È¤Ã¤Æ°ÕÌ£¤Î¤¢¤ë¥Ç¡¼¥¿¤ò¼è¤ê½Ð¤¹¤¿¤á¤Ë¤Ï
+
+ (1) VALUE¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤òÃΤë
+ (2) VALUE¤òC¤Î¥Ç¡¼¥¿¤ËÊÑ´¹¤¹¤ë
+
+¤ÎξÊý¤¬É¬ÍפǤ¹¡¥(1)¤ò˺¤ì¤ë¤È´Ö°ã¤Ã¤¿¥Ç¡¼¥¿¤ÎÊÑ´¹¤¬¹Ô¤ï¤ì
+¤Æ¡¤ºÇ°­¥×¥í¥°¥é¥à¤¬core dump¤·¤Þ¤¹¡¥
+
+1.1 ¥Ç¡¼¥¿¥¿¥¤¥×
+
+ruby¤Ë¤Ï¥æ¡¼¥¶¤¬»È¤¦²ÄǽÀ­¤Î¤¢¤ë°Ê²¼¤Î¥¿¥¤¥×¤¬¤¢¤ê¤Þ¤¹¡¥
+
+	T_NIL		nil
+	T_OBJECT	Ä̾ï¤Î¥ª¥Ö¥¸¥§¥¯¥È
+	T_CLASS		¥¯¥é¥¹
+	T_MODULE	¥â¥¸¥å¡¼¥ë
+	T_FLOAT		ÉâÆ°¾®¿ôÅÀ¿ô
+	T_STRING	ʸ»úÎó
+	T_REGEXP	Àµµ¬É½¸½
+	T_ARRAY		ÇÛÎó
+	T_FIXNUM	Fixnum(31bitĹÀ°¿ô)
+	T_HASH		Ï¢ÁÛÇÛÎó
+	T_STRUCT	(ruby¤Î)¹½Â¤ÂÎ
+	T_BIGNUM	¿ÇÜĹÀ°¿ô
+	T_FILE		Æþ½ÐÎÏ
+	T_TRUE		¿¿
+	T_FALSE		µ¶
+	T_DATA		¥Ç¡¼¥¿
+
+¤½¤Î¾¤ËÆâÉô¤ÇÍøÍѤµ¤ì¤Æ¤¤¤ë°Ê²¼¤Î¥¿¥¤¥×¤¬¤¢¤ê¤Þ¤¹¡¥
+
+	T_ICLASS
+	T_MATCH
+	T_VARMAP
+	T_SCOPE
+	T_NODE
+
+¤Û¤È¤ó¤É¤Î¥¿¥¤¥×¤ÏC¤Î¹½Â¤ÂΤǼÂÁõ¤µ¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+1.2 VALUE¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤ò¥Á¥§¥Ã¥¯¤¹¤ë
+
+ruby.h¤Ç¤ÏTYPE()¤È¤¤¤¦¥Þ¥¯¥í¤¬ÄêµÁ¤µ¤ì¤Æ¤¤¤Æ¡¤VALUE¤Î¥Ç¡¼¥¿
+¥¿¥¤¥×¤òÃΤ뤳¤È¤¬½ÐÍè¤Þ¤¹¡¥TYPE()¥Þ¥¯¥í¤Ï¾å¤Ç¾Ò²ð¤·¤¿T_XXXX
+¤Î·Á¼°¤ÎÄê¿ô¤òÊÖ¤·¤Þ¤¹¡¥VALUE¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤Ë±þ¤¸¤Æ½èÍý¤¹¤ë
+¾ì¹ç¤Ë¤Ï¡¤TYPE()¤ÎÃͤÇʬ´ô¤¹¤ë¤³¤È¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+  switch (TYPE(obj)) {
+    case T_FIXNUM:
+      /* FIXNUM¤Î½èÍý */
+      break;
+    case T_STRING:
+      /* ʸ»úÎó¤Î½èÍý */
+      break;
+    case T_ARRAY:
+      /* ÇÛÎó¤Î½èÍý */
+      break;
+    default:
+      /* Îã³°¤òȯÀ¸¤µ¤»¤ë */
+      TypeError("not valid value");
+      break;
+  }
+
+¤½¤ì¤È¥Ç¡¼¥¿¥¿¥¤¥×¤ò¥Á¥§¥Ã¥¯¤·¤Æ¡¤Àµ¤·¤¯¤Ê¤±¤ì¤ÐÎã³°¤òȯÀ¸¤¹
+¤ë´Ø¿ô¤¬ÍÑ°Õ¤µ¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+  void Check_Type(VALUE value, int type)
+
+¤³¤Î´Ø¿ô¤Ïvalue¤¬type¤Ç̵¤±¤ì¤Ð¡¤Îã³°¤òȯÀ¸¤µ¤»¤Þ¤¹¡¥°ú¿ô¤È
+¤·¤ÆÍ¿¤¨¤é¤ì¤¿VALUE¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤¬Àµ¤·¤¤¤«¤É¤¦¤«¥Á¥§¥Ã¥¯¤¹
+¤ë¤¿¤á¤Ë¤Ï¡¤¤³¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+FIXNUM¤ÈNIL¤Ë´Ø¤·¤Æ¤Ï¤è¤ê¹â®¤ÊȽÊÌ¥Þ¥¯¥í¤¬ÍÑ°Õ¤µ¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+  FIXNUM_P(obj)
+  NIL_P(obj)
+
+1.3 VALUE¤òC¤Î¥Ç¡¼¥¿¤ËÊÑ´¹¤¹¤ë
+
+¥Ç¡¼¥¿¥¿¥¤¥×¤¬T_NIL, T_FALSE, T_TRUE¤Ç¤¢¤ë»þ¡¤¥Ç¡¼¥¿¤Ï¤½¤ì¤¾
+¤ìnil, false, true¤Ç¤¹¡¥¤³¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤Î¥ª¥Ö¥¸¥§¥¯¥È¤Ï¤Ò¤È
+¤Ä¤º¤Ä¤·¤«Â¸ºß¤·¤Þ¤»¤ó¡¥
+
+¥Ç¡¼¥¿¥¿¥¤¥×¤¬T_FIXNUM¤Î»þ¡¤¤³¤ì¤Ï31bit¤Î¥µ¥¤¥º¤ò»ý¤ÄÀ°¿ô¤Ç
+¤¹¡¥FIXNUM¤òC¤ÎÀ°¿ô¤ËÊÑ´¹¤¹¤ë¤¿¤á¤Ë¤Ï¥Þ¥¯¥í¡ÖFIX2INT()¡×¤ò»È
+¤¤¤Þ¤¹¡¥¤½¤ì¤«¤é¡¤FIXNUM¤Ë¸Â¤é¤ºruby¤Î¥Ç¡¼¥¿¤òÀ°¿ô¤ËÊÑ´¹¤¹¤ë
+¡ÖNUM2INT()¡×¤È¤¤¤¦¥Þ¥¯¥í¤¬¤¢¤ê¤Þ¤¹¡¥¤³¤Î¥Þ¥¯¥í¤Ï¥Ç¡¼¥¿¥¿¥¤
+¥×¤Î¥Á¥§¥Ã¥¯Ìµ¤·¤Ç»È¤¨¤Þ¤¹(À°¿ô¤ËÊÑ´¹¤Ç¤­¤Ê¤¤¾ì¹ç¤Ë¤ÏÎã³°¤¬
+ȯÀ¸¤¹¤ë)¡¥
+
+ƱÍͤ˥Á¥§¥Ã¥¯Ìµ¤·¤Ç»È¤¨¤ëÊÑ´¹¥Þ¥¯¥í¤Ïdouble¤ò¼è¤ê½Ð¤¹
+¡ÖNUM2DBL()¡×¤Èchar*¤ò¼è¤ê½Ð¤¹¡ÖSTR2CSTR()¡×¤¬¤¢¤ê¤Þ¤¹¡¥
+
+¤½¤ì°Ê³°¤Î¥Ç¡¼¥¿¥¿¥¤¥×¤ÏÂбþ¤¹¤ëC¤Î¹½Â¤ÂΤ¬¤¢¤ê¤Þ¤¹¡¥Âбþ¤¹
+¤ë¹½Â¤ÂΤΤ¢¤ëVALUE¤Ï¤½¤Î¤Þ¤Þ¥­¥ã¥¹¥È(·¿ÊÑ´¹)¤¹¤ì¤Ð¹½Â¤ÂΤÎ
+¥Ý¥¤¥ó¥¿¤ËÊÑ´¹¤Ç¤­¤Þ¤¹¡¥
+
+¹½Â¤ÂΤϡÖstruct RXxxxx¡×¤È¤¤¤¦Ì¾Á°¤Çruby.h¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤Þ
+¤¹¡¥Î㤨¤Ðʸ»úÎó¤Ï¡Östruct RString¡×¤Ç¤¹¡¥¼ÂºÝ¤Ë»È¤¦²ÄǽÀ­¤¬
+¤¢¤ë¤Î¤Ïʸ»úÎó¤ÈÇÛÎ󤯤餤¤À¤È»×¤¤¤Þ¤¹¡¥
+
+ruby.h¤Ç¤Ï¹½Â¤ÂΤإ­¥ã¥¹¥È¤¹¤ë¥Þ¥¯¥í¤â¡ÖRXXXXX()¡×(Á´ÉôÂçʸ
+»ú¤Ë¤·¤¿¤â¤Î)¤È¤¤¤¦Ì¾Á°¤ÇÄ󶡤µ¤ì¤Æ¤¤¤Þ¤¹(Îã: RSTRING())¡¥
+
+Î㤨¤Ð¡¤Ê¸»úÎóstr¤ÎŤµ¤òÆÀ¤ë¤¿¤á¤Ë¤Ï¡ÖRSTRING(str)->len¡×¤È
+¤·¡¤Ê¸»úÎóstr¤òchar*¤È¤·¤ÆÆÀ¤ë¤¿¤á¤Ë¤Ï¡ÖRSTRING(str)->ptr¡×
+¤È¤·¤Þ¤¹¡¥ÇÛÎó¤Î¾ì¹ç¤Ë¤Ï¡¤¤½¤ì¤¾¤ì¡ÖRARRAT(str)->len¡×¡¤
+¡ÖRARRAT(str)->ptr¡×¤È¤Ê¤ê¤Þ¤¹¡¥
+
+ruby¤Î¹½Â¤ÂΤòľÀÜ¥¢¥¯¥»¥¹¤¹¤ë»þ¤Ëµ¤¤ò¤Ä¤±¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¤³
+¤È¤Ï¡¤ÇÛÎó¤äʸ»úÎó¤Î¹½Â¤ÂΤÎÃæ¿È¤Ï»²¾È¤¹¤ë¤À¤±¤Ç¡¤Ä¾ÀÜÊѹ¹¤·
+¤Ê¤¤¤³¤È¤Ç¤¹¡¥Ä¾ÀÜÊѹ¹¤·¤¿¾ì¹ç¡¤¥ª¥Ö¥¸¥§¥¯¥È¤ÎÆâÍƤÎÀ°¹çÀ­¤¬
+¤È¤ì¤Ê¤¯¤Ê¤Ã¤Æ¡¤»×¤ï¤Ì¥Ð¥°¤Î¸¶°ø¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+1.4 C¤Î¥Ç¡¼¥¿¤òVALUE¤ËÊÑ´¹¤¹¤ë
+
+VALUE¤Î¼ÂºÝ¤Î¹½Â¤¤Ï
+
+  * FIXNUM¤Î¾ì¹ç
+
+    1bit±¦¥·¥Õ¥È¤·¤Æ¡¤LSB¤òΩ¤Æ¤ë¡¥
+
+  * ¤½¤Î¾¤Î¥Ý¥¤¥ó¥¿¤Î¾ì¹ç
+
+    ¤½¤Î¤Þ¤ÞVALUE¤Ë¥­¥ã¥¹¥È¤¹¤ë¡¥
+
+¤È¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥¤è¤Ã¤Æ¡¤LSB¤ò¥Á¥§¥Ã¥¯¤¹¤ì¤ÐVALUE¤¬FIXNUM¤«¤É
+¤¦¤«¤ï¤«¤ë¤ï¤±¤Ç¤¹(¥Ý¥¤¥ó¥¿¤ÎLSB¤¬Î©¤Ã¤Æ¤¤¤Ê¤¤¤³¤È¤ò²¾Äꤷ¤Æ
+¤¤¤ë)¡¥
+
+¤Ç¤¹¤«¤é¡¤FIXNUM°Ê³°¤Îruby¤Î¥ª¥Ö¥¸¥§¥¯¥È¤Î¹½Â¤ÂΤÏñ¤ËVALUE
+¤Ë¥­¥ã¥¹¥È¤¹¤ë¤À¤±¤ÇVALUE¤ËÊÑ´¹½ÐÍè¤Þ¤¹¡¥¤¿¤À¤·¡¤Ç¤°Õ¤Î¹½Â¤
+ÂΤ¬VALUE¤Ë¥­¥ã¥¹¥È½ÐÍè¤ë¤ï¤±¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡¥¥­¥ã¥¹¥È¤¹¤ë¤Î
+¤Ïruby¤ÎÃΤäƤ¤¤ë¹½Â¤ÂÎ(ruby.h¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ëstruct RXxxx
+¤Î¤â¤Î)¤À¤±¤Ç¤¹¡¥
+
+FIXNUM¤Ë´Ø¤·¤Æ¤ÏÊÑ´¹¥Þ¥¯¥í¤ò·Ðͳ¤¹¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥C¤ÎÀ°¿ô
+¤«¤éVALUE¤ËÊÑ´¹¤¹¤ë¥Þ¥¯¥í¤Ï°Ê²¼¤Î¤â¤Î¤¬¤¢¤ê¤Þ¤¹¡¥É¬Íפ˱þ¤¸
+¤Æ»È¤¤Ê¬¤±¤Æ¤¯¤À¤µ¤¤¡¥
+
+  INT2FIX()	¤â¤È¤ÎÀ°¿ô¤¬31bit°ÊÆâ¤Ë¼ý¤Þ¤ë¼«¿®¤¬¤¢¤ë»þ
+  INT2NUM()	Ǥ°Õ¤ÎÀ°¿ô¤«¤éVALUE¤Ø
+
+INT2NUM()¤ÏÀ°¿ô¤¬FIXNUM¤ÎÈϰϤ˼ý¤Þ¤é¤Ê¤¤¾ì¹ç¡¤Bignum¤ËÊÑ´¹
+¤·¤Æ¤¯¤ì¤Þ¤¹(¤¬¡¤¾¯¤·ÃÙ¤¤)¡¥
+
+1.5 ruby¤Î¥Ç¡¼¥¿¤òÁàºî¤¹¤ë
+
+ÀèÄø¤â½Ò¤Ù¤¿Ä̤ꡤruby¤Î¹½Â¤ÂΤò¥¢¥¯¥»¥¹¤¹¤ë»þ¤ËÆâÍƤι¹¿·¤ò
+¹Ô¤¦¤³¤È¤Ï´«¤á¤é¤ì¤Þ¤»¤ó¡¥¤Ç¡¤ruby¤Î¥Ç¡¼¥¿¤òÁàºî¤¹¤ë»þ¤Ë¤Ï
+ruby¤¬ÍÑ°Õ¤·¤Æ¤¤¤ë´Ø¿ô¤òÍѤ¤¤Æ¤¯¤À¤µ¤¤¡¥
+
+¤³¤³¤Ç¤Ï¤â¤Ã¤È¤â»È¤ï¤ì¤ë¤Ç¤¢¤í¤¦Ê¸»úÎó¤ÈÇÛÎó¤ÎÀ¸À®/Áàºî¤ò¹Ô
+¤¤´Ø¿ô¤ò¤¢¤²¤Þ¤¹(Á´Éô¤Ç¤Ï¤Ê¤¤¤Ç¤¹)¡¥
+
+ ʸ»úÎó¤ËÂФ¹¤ë´Ø¿ô
+
+  str_new(char *ptr, int len)
+
+    ¿·¤·¤¤ruby¤Îʸ»úÎó¤òÀ¸À®¤¹¤ë¡¥
+
+  str_new2(char *ptr)
+
+    C¤Îʸ»úÎ󤫤éruby¤Îʸ»úÎó¤òÀ¸À®¤¹¤ë¡¥¤³¤Î´Ø¿ô¤Îµ¡Ç½¤Ï
+    str_new(ptr, strlen(ptr))¤ÈƱÅù¤Ç¤¢¤ë¡¥
+
+  str_cat(VALUE str, char *ptr, int len)
+
+    ruby¤Îʸ»úÎóstr¤Ëlen¥Ð¥¤¥È¤Îʸ»úÎóptr¤òÄɲ乤롥
+
+ ÇÛÎó¤ËÂФ¹¤ë´Ø¿ô
+
+  ary_new()
+
+    Í×ÁǤ¬0¤ÎÇÛÎó¤òÀ¸À®¤¹¤ë¡¥
+
+  ary_new2(int len)
+
+    Í×ÁǤ¬0¤ÎÇÛÎó¤òÀ¸À®¤¹¤ë¡¥lenÍ×ÁÇʬ¤ÎÎΰè¤ò¤¢¤é¤«¤¸¤á³ä¤ê
+    Åö¤Æ¤Æ¤ª¤¯¡¥
+
+  ary_new3(int n, ...)
+
+    °ú¿ô¤Ç»ØÄꤷ¤¿nÍ×ÁǤò´Þ¤àÇÛÎó¤òÀ¸À®¤¹¤ë¡¥
+
+  ary_new4(int n, VALUE *elts)
+
+    ÇÛÎó¤ÇÍ¿¤¨¤¿nÍ×ÁǤÎÇÛÎó¤òÀ¸À®¤¹¤ë¡¥
+
+  ary_push(VALUE ary)
+  ary_pop(VALUE ary, VALUE val)
+  ary_shift(VALUE ary)
+  ary_unshift(VALUE ary, VALUE val)
+  ary_entry(VALUE ary, int idx)
+
+    Array¤ÎƱ̾¤Î¥á¥½¥Ã¥É¤ÈƱ¤¸Æ¯¤­¤ò¤¹¤ë´Ø¿ô¡¥Âè1°ú¿ô¤Ïɬ¤º
+    ÇÛÎó¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡¥
+
+2¡¥ruby¤Îµ¡Ç½¤ò»È¤¦
+
+¸¶ÍýŪ¤Ëruby¤Ç½ñ¤±¤ë¤³¤È¤ÏC¤Ç¤â½ñ¤±¤Þ¤¹¡¥ruby¤½¤Î¤â¤Î¤¬C¤Çµ­
+½Ò¤µ¤ì¤Æ¤¤¤ë¤ó¤Ç¤¹¤«¤é¡¤ÅöÁ³¤È¤¤¤¨¤ÐÅöÁ³¤Ê¤ó¤Ç¤¹¤±¤É¡¥¤³¤³¤Ç
+¤Ïruby¤Î³ÈÄ¥¤Ë»È¤¦¤³¤È¤¬Â¿¤¤¤À¤í¤¦¤Èͽ¬¤µ¤ì¤ëµ¡Ç½¤òÃæ¿´¤Ë¾Ò
+²ð¤·¤Þ¤¹¡¥
+
+2.1 ruby¤Ëµ¡Ç½¤òÄɲ乤ë
+
+ruby¤ÇÄ󶡤µ¤ì¤Æ¤¤¤ë´Ø¿ô¤ò»È¤¨¤Ðruby¥¤¥ó¥¿¥×¥ê¥¿¤Ë¿·¤·¤¤µ¡Ç½
+¤òÄɲ乤뤳¤È¤¬¤Ç¤­¤Þ¤¹¡¥ruby¤Ç¤Ï°Ê²¼¤Îµ¡Ç½¤òÄɲ乤ë´Ø¿ô¤¬
+Ä󶡤µ¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+ * ¥¯¥é¥¹¡¤¥â¥¸¥å¡¼¥ë
+ * ¥á¥½¥Ã¥É¡¤Æðۥ᥽¥Ã¥É¤Ê¤É
+ * Äê¿ô
+
+¤Ç¤Ï½ç¤Ë¾Ò²ð¤·¤Þ¤¹¡¥
+
+2.1.1 ¥¯¥é¥¹/¥â¥¸¥å¡¼¥ëÄêµÁ
+
+¥¯¥é¥¹¤ä¥â¥¸¥å¡¼¥ë¤òÄêµÁ¤¹¤ë¤¿¤á¤Ë¤Ï¡¤°Ê²¼¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  VALUE rb_define_class(char *name, VALUE super)
+  VALUE rb_define_module(char *name)
+
+¤³¤ì¤é¤Î´Ø¿ô¤Ï¿·¤·¤¯ÄêµÁ¤µ¤ì¤¿¥¯¥é¥¹¤ä¥â¥¸¥å¡¼¥ë¤òÊÖ¤·¤Þ¤¹¡¥
+¥á¥½¥Ã¥É¤äÄê¿ô¤ÎÄêµÁ¤Ë¤³¤ì¤é¤ÎÃͤ¬É¬ÍפʤΤǡ¤¤Û¤È¤ó¤É¤Î¾ì¹ç
+¤ÏÌá¤êÃͤòÊÑ¿ô¤Ë³ÊǼ¤·¤Æ¤ª¤¯É¬Íפ¬¤¢¤ë¤Ç¤·¤ç¤¦¡¥
+
+¥¯¥é¥¹¤ä¥â¥¸¥å¡¼¥ë¤ò¾¤Î¥¯¥é¥¹¤ÎÆâÉô¤Ë¥Í¥¹¥È¤·¤ÆÄêµÁ¤¹¤ë»þ¤Ë
+¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  VALUE rb_define_class(VALUE outer, char *name, VALUE super)
+  VALUE rb_define_module(VALUE outer, char *name)
+
+2.1.2 ¥á¥½¥Ã¥É/Æðۥ᥽¥Ã¥ÉÄêµÁ
+
+¥á¥½¥Ã¥É¤äÆðۥ᥽¥Ã¥É¤òÄêµÁ¤¹¤ë¤Ë¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  void rb_define_method(VALUE class, char *name, 
+		        VALUE (*func)(), int argc)
+
+  void rb_define_singleton_method(VALUE object, char *name, 
+			          VALUE (*func)(), int argc)
+
+
+Ç°¤Î¤¿¤áÀâÌÀ¤¹¤ë¤È¡ÖÆðۥ᥽¥Ã¥É¡×¤È¤Ï¡¤¤½¤ÎÆÃÄê¤Î¥ª¥Ö¥¸¥§¥¯
+¥È¤ËÂФ·¤Æ¤À¤±Í­¸ú¤Ê¥á¥½¥Ã¥É¤Ç¤¹¡¥ruby¤Ç¤Ï¤è¤¯Smalltalk¤Ë¤ª
+¤±¤ë¥¯¥é¥¹¥á¥½¥Ã¥É¤È¤·¤Æ¡¤¥¯¥é¥¹¤ËÂФ¹¤ëÆðۥ᥽¥Ã¥É¤¬»È¤ï¤ì
+¤Þ¤¹¡¥
+
+¤³¤ì¤é¤Î´Ø¿ô¤Î argc¤È¤¤¤¦°ú¿ô¤ÏC¤Î´Ø¿ô¤ØÅϤµ¤ì¤ë°ú¿ô¤Î¿ô(¤È
+·Á¼°)¤ò·è¤á¤Þ¤¹¡¥argc¤¬Àµ¤Î»þ¤Ï´Ø¿ô¤Ë°ú¤­ÅϤ¹°ú¿ô¤Î¿ô¤ò°ÕÌ£
+¤·¤Þ¤¹¡¥16¸Ä°Ê¾å¤Î°ú¿ô¤Ï»È¤¨¤Þ¤»¤ó(¤¬¡¤Íפê¤Þ¤»¤ó¤è¤Í¡¤¤½¤ó
+¤Ê¤Ë)¡¥¼ÂºÝ¤Î´Ø¿ô¤Ë¤ÏÀèƬ¤Î°ú¿ô¤È¤·¤Æself¤¬Í¿¤¨¤é¤ì¤Þ¤¹¤Î¤Ç¡¤
+»ØÄꤷ¤¿¿ô¤è¤ê1¿¤¤°ú¿ô¤ò»ý¤Ä¤³¤È¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+argc¤¬Éé¤Î»þ¤Ï°ú¿ô¤Î¿ô¤Ç¤Ï¤Ê¤¯¡¤·Á¼°¤ò»ØÄꤷ¤¿¤³¤È¤Ë¤Ê¤ê¤Þ¤¹¡¥
+argc¤¬-1¤Î»þ¤Ï°ú¿ô¤òÇÛÎó¤ËÆþ¤ì¤ÆÅϤµ¤ì¤Þ¤¹¡¥argc¤¬-2¤Î»þ¤Ï°ú
+¿ô¤Ïruby¤ÎÇÛÎó¤È¤·¤ÆÅϤµ¤ì¤Þ¤¹¡¥
+
+¥á¥½¥Ã¥É¤òÄêµÁ¤¹¤ë´Ø¿ô¤Ï¤â¤¦Æó¤Ä¤¢¤ê¤Þ¤¹¡¥¤Ò¤È¤Ä¤Ïprivate¥á
+¥½¥Ã¥É¤òÄêµÁ¤¹¤ë´Ø¿ô¤Ç¡¤°ú¿ô¤Ïrb_define_method()¤ÈƱ¤¸¤Ç¤¹¡¥
+
+  void rb_define_private_method(VALUE class, char *name, 
+			        VALUE (*func)(), int argc)
+
+private¥á¥½¥Ã¥É¤È¤Ï´Ø¿ô·Á¼°¤Ç¤·¤«¸Æ¤Ó½Ð¤¹¤³¤È¤Î½ÐÍè¤Ê¤¤¥á¥½¥Ã
+¥É¤Ç¤¹¡¥
+
+¤â¤¦¤Ò¤È¤Ä¤Ï¥â¥¸¥å¡¼¥ë´Ø¿ô¤òÄêµÁ¤¹¤ë¤â¤Î¤Ç¤¹¡¥¥â¥¸¥å¡¼¥ë´Ø¿ô
+¤È¤Ï¥â¥¸¥å¡¼¥ë¤ÎÆðۥ᥽¥Ã¥É¤Ç¤¢¤ê¡¤Æ±»þ¤Ëprivate¥á¥½¥Ã¥É¤Ç
+¤â¤¢¤ë¤â¤Î¤Ç¤¹¡¥Îã¤ò¤¢¤²¤ë¤ÈMath¥â¥¸¥å¡¼¥ë¤Îsqrt()¤Ê¤É¤¬¤¢¤²
+¤é¤ì¤Þ¤¹¡¥¤³¤Î¥á¥½¥Ã¥É¤Ï
+
+  Math.sqrt(4)
+
+¤È¤¤¤¦·Á¼°¤Ç¤â
+
+  include Math
+  sqrt(4)
+
+¤È¤¤¤¦·Á¼°¤Ç¤â»È¤¨¤Þ¤¹¡¥¥â¥¸¥å¡¼¥ë´Ø¿ô¤òÄêµÁ¤¹¤ë´Ø¿ô¤Ï°Ê²¼¤Î
+Ä̤ê¤Ç¤¹¡¥
+
+  void rb_define_module_function(VALUE module, char *name, 
+		                 VALUE (*func)(), int argc)
+
+´Ø¿ôŪ¥á¥½¥Ã¥É(Kernel¥â¥¸¥å¡¼¥ë¤Îprivate method)¤òÄêµÁ¤¹¤ë¤¿
+¤á¤Î´Ø¿ô¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¹¡¥
+
+  void rb_define_global_function(char *name, VALUE (*func)(), int argc)
+
+
+2.1.3 Äê¿ôÄêµÁ
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ë¤¬É¬ÍפÊÄê¿ô¤Ï¤¢¤é¤«¤¸¤áÄêµÁ¤·¤Æ¤ª¤¤¤¿Êý¤¬Îɤ¤
+¤Ç¤·¤ç¤¦¡¥Äê¿ô¤òÄêµÁ¤¹¤ë´Ø¿ô¤ÏÆó¤Ä¤¢¤ê¤Þ¤¹¡¥
+
+  void rb_define_const(VALUE class, char *name, VALUE val)
+  void rb_define_global_const(char *name, VALUE val)
+
+Á°¼Ô¤ÏÆÃÄê¤Î¥¯¥é¥¹/¥â¥¸¥å¡¼¥ë¤Ë°¤¹¤ëÄê¿ô¤òÄêµÁ¤¹¤ë¤â¤Î¡¤¸å
+¼Ô¤Ï¥°¥í¡¼¥Ð¥ë¤ÊÄê¿ô¤òÄêµÁ¤¹¤ë¤â¤Î¤Ç¤¹¡¥
+
+2.2 ruby¤Îµ¡Ç½¤òC¤«¤é¸Æ¤Ó½Ð¤¹
+
+´û¤Ë¡Ø1.5 ruby¤Î¥Ç¡¼¥¿¤òÁàºî¤¹¤ë¡Ù¤Ç°ìÉô¾Ò²ð¤·¤¿¤è¤¦¤Ê´Ø¿ô¤ò
+»È¤¨¤Ð¡¤ruby¤Îµ¡Ç½¤ò¼Â¸½¤·¤Æ¤¤¤ë´Ø¿ô¤òľÀܸƤӽФ¹¤³¤È¤¬½ÐÍè
+¤Þ¤¹¡¥
+
+# ¤³¤Î¤è¤¦¤Ê´Ø¿ô¤Î°ìÍ÷ɽ¤Ï¤¤¤Þ¤Î¤È¤³¤í¤¢¤ê¤Þ¤»¤ó¡¥¥½¡¼¥¹¤ò¸«
+# ¤ë¤·¤«¤Ê¤¤¤Ç¤¹¤Í¡¥
+
+¤½¤ì°Ê³°¤Ë¤âruby¤Îµ¡Ç½¤ò¸Æ¤Ó½Ð¤¹ÊýË¡¤Ï¤¤¤¯¤Ä¤«¤¢¤ê¤Þ¤¹¡¥
+
+2.2.1 ruby¤Î¥×¥í¥°¥é¥à¤òeval¤¹¤ë
+
+C¤«¤éruby¤Îµ¡Ç½¤ò¸Æ¤Ó½Ð¤¹¤â¤Ã¤È¤â´Êñ¤ÊÊýË¡¤È¤·¤Æ¡¤Ê¸»úÎó¤Ç
+Í¿¤¨¤é¤ì¤¿ruby¤Î¥×¥í¥°¥é¥à¤òɾ²Á¤¹¤ë´Ø¿ô¤¬¤¢¤ê¤Þ¤¹¡¥
+
+  VALUE rb_eval_string(char *str)
+
+¤³¤Îɾ²Á¤Ï¸½ºß¤Î´Ä¶­¤Ç¹Ô¤ï¤ì¤Þ¤¹¡¥¤Ä¤Þ¤ê¡¤¸½ºß¤Î¥í¡¼¥«¥ëÊÑ¿ô
+¤Ê¤É¤ò¼õ¤±·Ñ¤®¤Þ¤¹¡¥
+
+2.2.2 ID¤Þ¤¿¤Ï¥·¥ó¥Ü¥ë
+
+C¤«¤éʸ»úÎó¤ò·Ðͳ¤»¤º¤Ëruby¤Î¥á¥½¥Ã¥É¤ò¸Æ¤Ó½Ð¤¹¤³¤È¤â¤Ç¤­¤Þ
+¤¹¡¥¤½¤ÎÁ°¤Ë¡¤ruby¥¤¥ó¥¿¥×¥ê¥¿Æâ¤Ç¥á¥½¥Ã¥É¤äÊÑ¿ô̾¤ò»ØÄꤹ¤ë
+»þ¤Ë»È¤ï¤ì¤Æ¤¤¤ëID¤Ë¤Ä¤¤¤ÆÀâÌÀ¤·¤Æ¤ª¤­¤Þ¤·¤ç¤¦¡¥
+
+ID¤È¤ÏÊÑ¿ô̾¡¤¥á¥½¥Ã¥É̾¤òɽ¤¹À°¿ô¤Ç¤¹¡¥ruby¤ÎÃæ¤Ç¤Ï
+
+ :¼±ÊÌ»Ò
+
+¤Ç¥¢¥¯¥»¥¹¤Ç¤­¤Þ¤¹¡¥C¤«¤é¤³¤ÎÀ°¿ô¤òÆÀ¤ë¤¿¤á¤Ë¤Ï´Ø¿ô
+
+  rb_intern(char *name)
+
+¤ò»È¤¤¤Þ¤¹¡¥¤Þ¤¿°ìʸ»ú¤Î±é»»»Ò¤Ï¤½¤Îʸ»ú¥³¡¼¥É¤¬¤½¤Î¤Þ¤Þ¥·¥ó
+¥Ü¥ë¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥ruby¤«¤é°ú¿ô¤È¤·¤ÆÍ¿¤¨¤é¤ì¤¿¥·¥ó¥Ü¥ë(¤Þ
+¤¿¤Ïʸ»úÎó)¤òID¤ËÊÑ´¹¤¹¤ë¤Ë¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  rb_to_id(VALUE symbol)
+
+2.2.3 C¤«¤éruby¤Î¥á¥½¥Ã¥É¤ò¸Æ¤Ó½Ð¤¹
+
+C¤«¤éʸ»úÎó¤ò·Ðͳ¤»¤º¤Ëruby¤Î¥á¥½¥Ã¥É¤ò¸Æ¤Ó½Ð¤¹¤¿¤á¤Ë¤Ï°Ê²¼
+¤Î´Ø¿ô¤ò»È¤¤¤Þ¤¹¡¥
+
+  VALUE rb_funcall(VALUE recv, ID mid, int argc, ...)
+
+¤³¤Î´Ø¿ô¤Ï¥ª¥Ö¥¸¥§¥¯¥Èrecv¤Îmid¤Ç»ØÄꤵ¤ì¤ë¥á¥½¥Ã¥É¤ò¸Æ¤Ó½Ð
+¤·¤Þ¤¹¡¥¤½¤Î¾¤Ë°ú¿ô¤Î»ØÄê¤Î»ÅÊý¤¬°ã¤¦°Ê²¼¤Î´Ø¿ô¤â¤¢¤ê¤Þ¤¹¡¥
+
+  VALUE rb_funcall2(VALUE recv, ID mid, int argc, VALUE *argv)
+  VALUE rb_apply(VALUE recv, ID mid, VALUE args)
+
+apply¤Ë¤Ï°ú¿ô¤È¤·¤Æruby¤ÎÇÛÎó¤òÍ¿¤¨¤Þ¤¹¡¥
+
+2.2.4 ÊÑ¿ô/Äê¿ô¤ò»²¾È/¹¹¿·¤¹¤ë
+
+C¤«¤é´Ø¿ô¤ò»È¤Ã¤Æ»²¾È¡¦¹¹¿·¤Ç¤­¤ë¤Î¤Ï¡¤¥¯¥é¥¹Äê¿ô¡¤¥¤¥ó¥¹¥¿
+¥ó¥¹ÊÑ¿ô¤Ç¤¹¡¥Âç°èÊÑ¿ô¤Ï°ìÉô¤Î¤â¤Î¤ÏC¤ÎÂç°èÊÑ¿ô¤È¤·¤Æ¥¢¥¯¥»
+¥¹¤Ç¤­¤Þ¤¹¡¥¥í¡¼¥«¥ëÊÑ¿ô¤ò»²¾È¤¹¤ëÊýË¡¤Ï¸ø³«¤·¤Æ¤¤¤Þ¤»¤ó¡¥
+
+¥ª¥Ö¥¸¥§¥¯¥È¤Î¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô¤ò»²¾È¡¦¹¹¿·¤¹¤ë´Ø¿ô¤Ï°Ê²¼¤ÎÄÌ
+¤ê¤Ç¤¹¡¥
+
+  VALUE rb_ivar_get(VALUE obj, ID id)
+  VALUE rb_ivar_set(VALUE obj, ID id, VALUE val)
+
+id¤Ïrb_intern()¤ÇÆÀ¤é¤ì¤ë¤â¤Î¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡¥
+
+¥¯¥é¥¹Äê¿ô¤ò»²¾È¤¹¤ë¤Ë¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡¥
+
+  VALUE rb_const_get(VALUE obj, ID id)
+
+¥¯¥é¥¹Äê¿ô¤ò¿·¤·¤¯ÄêµÁ¤¹¤ë¤¿¤á¤Ë¤Ï¡Ø2.1.3 Äê¿ôÄêµÁ¡Ù¤Ç¾Ò²ð¤µ
+¤ì¤Æ¤¤¤ë´Ø¿ô¤ò»È¤Ã¤Æ¤¯¤À¤µ¤¤¡¥
+
+3¡¥ruby¤ÈC¤È¤Î¾ðÊó¶¦Í­
+
+C¸À¸ì¤Èruby¤Î´Ö¤Ç¾ðÊó¤ò¶¦Í­¤¹¤ëÊýË¡¤Ë¤Ä¤¤¤Æ²òÀ⤷¤Þ¤¹¡¥
+
+3.1 C¤«¤é»²¾È¤Ç¤­¤ëruby¤ÎÄê¿ô
+
+°Ê²¼¤Îruby¤ÎÄê¿ô¤ÏC¤Î¥ì¥Ù¥ë¤«¤é»²¾È¤Ç¤­¤ë¡¥
+
+  TRUE
+  FALSE
+
+¿¿µ¶ÃÍ¡¥FALSE¤ÏC¸À¸ì¤Ç¤âµ¶¤È¤ß¤Ê¤µ¤ì¤ë(¤Ä¤Þ¤ê0)¡¥
+
+  Qnil
+
+C¸À¸ì¤«¤é¸«¤¿¡Önil¡×¡¥
+
+3.2 C¤Èruby¤Ç¶¦Í­¤µ¤ì¤ëÂç°èÊÑ¿ô
+
+C¤Èruby¤ÇÂç°èÊÑ¿ô¤ò»È¤Ã¤Æ¾ðÊó¤ò¶¦Í­¤Ç¤­¤Þ¤¹¡¥¶¦Í­¤Ç¤­¤ëÂç°è
+ÊÑ¿ô¤Ë¤Ï¤¤¤¯¤Ä¤«¤Î¼ïÎब¤¢¤ê¤Þ¤¹¡¥¤½¤Î¤Ê¤«¤Ç¤â¤Ã¤È¤âÎɤ¯»È¤ï
+¤ì¤ë¤È»×¤ï¤ì¤ë¤Î¤Ïrb_define_variable()¤Ç¤¹¡¥
+
+  void rb_define_variable(char *name, VALUE *var)
+
+¤³¤Î´Ø¿ô¤Ïruby¤ÈC¤È¤Ç¶¦Í­¤¹¤ëÂç°èÊÑ¿ô¤òÄêµÁ¤·¤Þ¤¹¡¥ÊÑ¿ô̾¤¬
+`$'¤Ç»Ï¤Þ¤é¤Ê¤¤»þ¤Ë¤Ï¼«Æ°Åª¤ËÄɲ䵤ì¤Þ¤¹¡¥¤³¤ÎÊÑ¿ô¤ÎÃͤòÊÑ
+¹¹¤¹¤ë¤È¼«Æ°Åª¤Ëruby¤ÎÂбþ¤¹¤ëÊÑ¿ô¤ÎÃͤâÊѤï¤ê¤Þ¤¹¡¥
+
+¤Þ¤¿ruby¦¤«¤é¤Ï¹¹¿·¤Ç¤­¤Ê¤¤ÊÑ¿ô¤â¤¢¤ê¤Þ¤¹¡¥¤³¤Îread only¤Î
+ÊÑ¿ô¤Ï°Ê²¼¤Î´Ø¿ô¤ÇÄêµÁ¤·¤Þ¤¹¡¥
+
+  void rb_define_readonly_variable(char *name, VALUE *var)
+
+¤³¤ì¤éÊÑ¿ô¤Î¾¤Ëhook¤ò¤Ä¤±¤¿Âç°èÊÑ¿ô¤òÄêµÁ¤Ç¤­¤Þ¤¹¡¥hookÉÕ¤­
+¤ÎÂç°èÊÑ¿ô¤Ï°Ê²¼¤Î´Ø¿ô¤òÍѤ¤¤ÆÄêµÁ¤·¤Þ¤¹¡¥hookÉÕ¤­Âç°èÊÑ¿ô¤Î
+Ãͤλ²¾È¤äÀßÄê¤Ïhook¤Ç¹Ô¤¦É¬Íפ¬¤¢¤ê¤Þ¤¹¡¥
+
+  void rb_define_hooked_variable(char *name, VALUE *var,
+				 VALUE (*getter)(), VALUE (*setter)())
+
+¤³¤Î´Ø¿ô¤ÏC¤Î´Ø¿ô¤Ë¤è¤Ã¤Æhook¤Î¤Ä¤±¤é¤ì¤¿Âç°èÊÑ¿ô¤òÄêµÁ¤·¤Þ
+¤¹¡¥ÊÑ¿ô¤¬»²¾È¤µ¤ì¤¿»þ¤Ë¤Ï´Ø¿ôgetter¤¬¡¤ÊÑ¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì
+¤¿»þ¤Ë¤Ï´Ø¿ôsetter¤¬¸Æ¤Ð¤ì¤ë¡¥hook¤ò»ØÄꤷ¤Ê¤¤¾ì¹ç¤Ïgetter¤ä
+setter¤Ë0¤ò»ØÄꤷ¤Þ¤¹¡¥
+
+# getter¤âsetter¤â0¤Ê¤é¤Ðrb_define_variable()¤ÈƱ¤¸¤Ë¤Ê¤ë¡¥
+
+¤½¤ì¤«¤é¡¤C¤Î´Ø¿ô¤Ë¤è¤Ã¤Æ¼Â¸½¤µ¤ì¤ëruby¤ÎÂç°èÊÑ¿ô¤òÄêµÁ¤¹¤ë
+´Ø¿ô¤¬¤¢¤ê¤Þ¤¹¡¥
+
+  void rb_define_virtual_variable(char *name,
+				  VALUE (*getter)(), VALUE (*setter)())
+
+¤³¤Î´Ø¿ô¤Ë¤è¤Ã¤ÆÄêµÁ¤µ¤ì¤¿ruby¤ÎÂç°èÊÑ¿ô¤¬»²¾È¤µ¤ì¤¿»þ¤Ë¤Ï
+getter¤¬¡¤ÊÑ¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì¤¿»þ¤Ë¤Ïsetter¤¬¸Æ¤Ð¤ì¤Þ¤¹¡¥
+
+getter¤Èsetter¤Î»ÅÍͤϰʲ¼¤ÎÄ̤ê¤Ç¤¹¡¥
+
+  (*getter)(ID id, void *data, struct global_entry* entry);
+  (*setter)(VALUE val, ID id, void *data, struct global_entry* entry);
+
+3.3 C¤Î¥Ç¡¼¥¿¤òruby¥ª¥Ö¥¸¥§¥¯¥È¤Ë¤¹¤ë
+
+C¤ÎÀ¤³¦¤ÇÄêµÁ¤µ¤ì¤¿¥Ç¡¼¥¿(¹½Â¤ÂÎ)¤òruby¤Î¥ª¥Ö¥¸¥§¥¯¥È¤È¤·¤Æ
+¼è¤ê°·¤¤¤¿¤¤¾ì¹ç¤¬¤¢¤ê¤¨¤Þ¤¹¡¥¤³¤Î¤è¤¦¤Ê¾ì¹ç¤Ë¤Ï¡¤Data¤È¤¤¤¦
+ruby¥ª¥Ö¥¸¥§¥¯¥È¤ËC¤Î¹½Â¤ÂÎ(¤Ø¤Î¥Ý¥¤¥ó¥¿)¤ò¤¯¤ë¤à¤³¤È¤Çruby
+¥ª¥Ö¥¸¥§¥¯¥È¤È¤·¤Æ¼è¤ê°·¤¨¤ë¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+Data¥ª¥Ö¥¸¥§¥¯¥È¤òÀ¸À®¤·¤Æ¹½Â¤ÂΤòruby¥ª¥Ö¥¸¥§¥¯¥È¤Ë¥«¥×¥»¥ë
+²½¤¹¤ë¤¿¤á¤Ë¤Ï¡¤°Ê²¼¤Î¥Þ¥¯¥í¤ò»È¤¤¤Þ¤¹¡¥
+
+  Data_Wrap_Struct(class,mark,free,ptr)
+
+¤³¤Î¥Þ¥¯¥í¤ÎÌá¤êÃͤÏÀ¸À®¤µ¤ì¤¿Data¥ª¥Ö¥¸¥§¥¯¥È¤Ç¤¹¡¥
+
+class¤Ï¤³¤ÎData¥ª¥Ö¥¸¥§¥¯¥È¤Î¥¯¥é¥¹¤Ç¤¹¡¥ptr¤Ï¥«¥×¥»¥ë²½¤¹¤ë
+C¤Î¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤Ç¤¹¡¥mark¤Ï¤³¤Î¹½Â¤ÂΤ¬ruby¤Î¥ª¥Ö¥¸¥§
+¥¯¥È¤Ø¤Î»²¾È¤¬¤¢¤ë»þ¤Ë»È¤¦´Ø¿ô¤Ç¤¹¡¥¤½¤Î¤è¤¦¤Ê»²¾È¤ò´Þ¤Þ¤Ê¤¤
+»þ¤Ë¤Ï0¤ò»ØÄꤷ¤Þ¤¹¡¥
+
+# ¤½¤Î¤è¤¦¤Ê»²¾È¤Ï´«¤á¤é¤ì¤Þ¤»¤ó¡¥
+
+free¤Ï¤³¤Î¹½Â¤ÂΤ¬¤â¤¦ÉÔÍפˤʤä¿»þ¤Ë¸Æ¤Ð¤ì¤ë´Ø¿ô¤Ç¤¹¡¥¤³¤Î
+´Ø¿ô¤¬¥¬¡¼¥Ù¡¼¥¸¥³¥ì¥¯¥¿¤«¤é¸Æ¤Ð¤ì¤Þ¤¹¡¥
+
+C¤Î¹½Â¤ÂΤγäÅö¤ÈData¥ª¥Ö¥¸¥§¥¯¥È¤ÎÀ¸À®¤òƱ»þ¤Ë¹Ô¤¦¥Þ¥¯¥í¤È
+¤·¤Æ°Ê²¼¤Î¤â¤Î¤¬Ä󶡤µ¤ì¤Æ¤¤¤Þ¤¹¡¥
+
+  Data_Make_Struct(class, type, mark, free, sval)
+
+¤³¤Î¥Þ¥¯¥í¤ÎÌá¤êÃͤÏÀ¸À®¤µ¤ì¤¿Data¥ª¥Ö¥¸¥§¥¯¥È¤Ç¤¹¡¥
+
+class, mark, free¤ÏData_Wrap_Struct¤ÈƱ¤¸Æ¯¤­¤ò¤·¤Þ¤¹¡¥type
+¤Ï³ä¤êÅö¤Æ¤ëC¹½Â¤ÂΤη¿¤Ç¤¹¡¥³ä¤êÅö¤Æ¤é¤ì¤¿¹½Â¤ÂΤÏÊÑ¿ôsval
+¤ËÂåÆþ¤µ¤ì¤Þ¤¹¡¥¤³¤ÎÊÑ¿ô¤Î·¿¤Ï (type*) ¤Ç¤¢¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥
+
+Data¥ª¥Ö¥¸¥§¥¯¥È¤«¤é¥Ý¥¤¥ó¥¿¤ò¼è¤ê½Ð¤¹¤Î¤Ï°Ê²¼¤Î¥Þ¥¯¥í¤òÍѤ¤
+¤Þ¤¹¡¥
+
+  Data_Get_Struct(obj, type, sval)
+
+C¤Î¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤ÏÊÑ¿ôsval¤ËÂåÆþ¤µ¤ì¤Þ¤¹¡¥
+
+¤³¤ì¤é¤ÎData¤Î»È¤¤Êý¤Ï¤Á¤ç¤Ã¤Èʬ¤«¤ê¤Ë¤¯¤¤¤Î¤Ç¡¤¸å¤ÇÀâÌÀ¤¹¤ë
+ÎãÂê¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡¥
+
+4¡¥ÎãÂê - dbm¥Ñ¥Ã¥±¡¼¥¸¤òºî¤ë
+
+¤³¤³¤Þ¤Ç¤ÎÀâÌÀ¤Ç¤È¤ê¤¢¤¨¤º³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Ïºî¤ì¤ë¤Ï¤º¤Ç¤¹¡¥
+ruby¤Îext¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤¹¤Ç¤Ë´Þ¤Þ¤ì¤Æ¤¤¤ëdbm¥â¥¸¥å¡¼¥ë¤òÎã¤Ë
+¤·¤ÆÃʳ¬Åª¤ËÀâÌÀ¤·¤Þ¤¹¡¥
+
+(1) ¥Ç¥£¥ì¥¯¥È¥ê¤òºî¤ë
+
+  % mkdir ext/dbm
+
+ruby 1.1¤«¤é¤ÏǤ°Õ¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ç¥À¥¤¥Ê¥ß¥Ã¥¯¥é¥¤¥Ö¥é¥ê¤òºî
+¤ë¤³¤È¤¬¤Ç¤­¤ë¤è¤¦¤Ë¤Ê¤ê¤Þ¤·¤¿¡¥ruby¤ËÀÅŪ¤Ë¥ê¥ó¥¯¤¹¤ë¾ì¹ç¤Ë
+¤Ïruby¤òŸ³«¤·¤¿¥Ç¥£¥ì¥¯¥È¥ê¤Î²¼¡¤ext¥Ç¥£¥ì¥¯¥È¥ê¤ÎÃæ¤Ë³ÈÄ¥
+¥â¥¸¥å¡¼¥ëÍѤΥǥ£¥ì¥¯¥È¥ê¤òºî¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥Ì¾Á°¤ÏŬÅö¤Ë
+Áª¤ó¤Ç¹½¤¤¤Þ¤»¤ó¡¥
+
+(2) MANIFEST¥Õ¥¡¥¤¥ë¤òºî¤ë
+
+  % cd ext/dbm
+  % touch MANIFEST
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Î²¼¤Ë¤ÏMANIFEST¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤¬
+ɬÍפʤΤǡ¤¤È¤ê¤¢¤¨¤º¶õ¤Î¥Õ¥¡¥¤¥ë¤òºî¤Ã¤Æ¤ª¤­¤Þ¤¹¡¥¸å¤Ç¤³¤Î
+¥Õ¥¡¥¤¥ë¤Ë¤ÏɬÍפʥե¡¥¤¥ë°ìÍ÷¤¬Æþ¤ë¤³¤È¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+MANIFEST¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤Ï¡¤ÀÅŪ¥ê¥ó¥¯¤Îmake¤Î»þ¤Ë¥Ç¥£¥ì¥¯¥È¥ê
+¤¬³ÈÄ¥¥â¥¸¥å¡¼¥ë¤ò´Þ¤ó¤Ç¤¤¤ë¤«¤É¤¦¤«È½Äꤹ¤ë¤¿¤á¤Ë»È¤ï¤ì¤ì¤Æ
+¤¤¤Þ¤¹¡¥¥À¥¤¥Ê¥ß¥Ã¥¯¥é¥¤¥Ö¥é¥ê¤òºî¤ë¾ì¹ç¤Ë¤Ïɬ¤º¤·¤âɬÍפǤÏ
+¤¢¤ê¤Þ¤»¤ó¡¥
+
+(3) À߷פ¹¤ë
+
+¤Þ¤¢¡¤ÅöÁ³¤Ê¤ó¤Ç¤¹¤±¤É¡¤¤É¤¦¤¤¤¦µ¡Ç½¤ò¼Â¸½¤¹¤ë¤«¤É¤¦¤«¤Þ¤ºÀß
+·×¤¹¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥¤É¤ó¤Ê¥¯¥é¥¹¤ò¤Ä¤¯¤ë¤«¡¤¤½¤Î¥¯¥é¥¹¤Ë¤Ï
+¤É¤ó¤Ê¥á¥½¥Ã¥É¤¬¤¢¤ë¤«¡¤¥¯¥é¥¹¤¬Ä󶡤¹¤ëÄê¿ô¤Ê¤É¤Ë¤Ä¤¤¤ÆÀß·×
+¤·¤Þ¤¹¡¥dbm¥¯¥é¥¹¤Ë¤Ä¤¤¤Æ¤Ïext/dbm.doc¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡¥
+
+(4) C¥³¡¼¥É¤ò½ñ¤¯
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ëËÜÂΤȤʤëC¸À¸ì¤Î¥½¡¼¥¹¤ò½ñ¤­¤Þ¤¹¡¥C¸À¸ì¤Î¥½¡¼
+¥¹¤¬¤Ò¤È¤Ä¤Î»þ¤Ë¤Ï¡Ö¥â¥¸¥å¡¼¥ë̾.c¡×¤òÁª¤Ö¤ÈÎɤ¤¤Ç¤·¤ç¤¦¡¥C
+¸À¸ì¤Î¥½¡¼¥¹¤¬Ê£¿ô¤Î¾ì¹ç¤Ë¤ÏµÕ¤Ë¡Ö¥â¥¸¥å¡¼¥ë̾.c¡×¤È¤¤¤¦¥Õ¥¡
+¥¤¥ë̾¤ÏÈò¤±¤ëɬÍפ¬¤¢¤ê¤Þ¤¹¡¥¥ª¥Ö¥¸¥§¥¯¥È¥Õ¥¡¥¤¥ë¤È¥â¥¸¥å¡¼
+¥ëÀ¸À®»þ¤ËÃæ´ÖŪ¤ËÀ¸À®¤µ¤ì¤ë¡Ö¥â¥¸¥å¡¼¥ë̾.o¡×¤È¤¤¤¦¥Õ¥¡¥¤¥ë
+¤È¤¬¾×Æͤ¹¤ë¤«¤é¤Ç¤¹¡¥
+
+ruby¤Ï³ÈÄ¥¥â¥¸¥å¡¼¥ë¤ò¥í¡¼¥É¤¹¤ë»þ¤Ë¡ÖInit_¥â¥¸¥å¡¼¥ë̾¡×¤È
+¤¤¤¦´Ø¿ô¤ò¼«Æ°Åª¤Ë¼Â¹Ô¤·¤Þ¤¹¡¥dbm¥â¥¸¥å¡¼¥ë¤Î¾ì¹ç¡ÖInit_dbm¡×
+¤Ç¤¹¡¥¤³¤Î´Ø¿ô¤ÎÃæ¤Ç¥¯¥é¥¹¡¤¥â¥¸¥å¡¼¥ë¡¤¥á¥½¥Ã¥É¡¤Äê¿ô¤Ê¤É¤Î
+ÄêµÁ¤ò¹Ô¤¤¤Þ¤¹¡¥dbm.c¤«¤é°ìÉô°úÍѤ·¤Þ¤¹¡¥
+
+--
+Init_dbm()
+{
+    /* DBM¥¯¥é¥¹¤òÄêµÁ¤¹¤ë */
+    cDBM = rb_define_class("DBM", cObject);
+    /* DBM¤ÏEnumerate¥â¥¸¥å¡¼¥ë¤ò¥¤¥ó¥¯¥ë¡¼¥É¤¹¤ë */
+    rb_include_module(cDBM, mEnumerable);
+
+    /* DBM¥¯¥é¥¹¤Î¥¯¥é¥¹¥á¥½¥Ã¥Éopen(): °ú¿ô¤ÏC¤ÎÇÛÎó¤Ç¼õ¤±¤ë */
+    rb_define_singleton_method(cDBM, "open", fdbm_s_open, -1);
+
+    /* DBM¥¯¥é¥¹¤Î¥á¥½¥Ã¥Éclose(): °ú¿ô¤Ï¤Ê¤· */
+    rb_define_method(cDBM, "close", fdbm_close, 0);
+    /* DBM¥¯¥é¥¹¤Î¥á¥½¥Ã¥É[]: °ú¿ô¤Ï1¸Ä */
+    rb_define_method(cDBM, "[]", fdbm_fetch, 1);
+		:
+
+    /* DBM¥Ç¡¼¥¿¤ò³ÊǼ¤¹¤ë¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô̾¤Î¤¿¤á¤ÎID */
+    id_dbm = rb_intern("dbm");
+}
+--
+
+DBM¥â¥¸¥å¡¼¥ë¤Ïdbm¤Î¥Ç¡¼¥¿¤ÈÂбþ¤¹¤ë¥ª¥Ö¥¸¥§¥¯¥È¤Ë¤Ê¤ë¤Ï¤º¤Ç
+¤¹¤«¤é¡¤C¤ÎÀ¤³¦¤Îdbm¤òruby¤ÎÀ¤³¦¤Ë¼è¤ê¹þ¤àɬÍפ¬¤¢¤ê¤Þ¤¹¡¥
+
+
+dbm.c¤Ç¤ÏData_Make_Struct¤ò°Ê²¼¤Î¤è¤¦¤Ë»È¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+struct dbmdata {
+    int  di_size;
+    DBM *di_dbm;
+};
+
+
+obj = Data_Make_Struct(class,struct dbmdata,0,free_dbm,dbmp);
+--
+
+¤³¤³¤Ç¤Ïdbmstruct¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤òData¤Ë¥«¥×¥»¥ë²½¤·¤Æ¤¤
+¤Þ¤¹¡¥DBM*¤òľÀÜ¥«¥×¥»¥ë²½¤·¤Ê¤¤¤Î¤Ïclose()¤·¤¿»þ¤Î½èÍý¤ò¹Í
+¤¨¤Æ¤Î¤³¤È¤Ç¤¹¡¥
+
+Data¥ª¥Ö¥¸¥§¥¯¥È¤«¤édbmstruct¹½Â¤ÂΤΥݥ¤¥ó¥¿¤ò¼è¤ê½Ð¤¹¤¿¤á
+¤Ë°Ê²¼¤Î¥Þ¥¯¥í¤ò»È¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+#define GetDBM(obj, dbmp) {\
+    Data_Get_Struct(obj, struct dbmdata, dbmp);\
+    if (dbmp->di_dbm == 0) closed_dbm();\
+}
+--
+
+¤Á¤ç¤Ã¤ÈÊ£»¨¤Ê¥Þ¥¯¥í¤Ç¤¹¤¬¡¤Íפ¹¤ë¤Ëdbmdata¹½Â¤ÂΤΥݥ¤¥ó¥¿
+¤Î¼è¤ê½Ð¤·¤È¡¤close¤µ¤ì¤Æ¤¤¤ë¤«¤É¤¦¤«¤Î¥Á¥§¥Ã¥¯¤ò¤Þ¤È¤á¤Æ¤¤
+¤ë¤À¤±¤Ç¤¹¡¥
+
+DBM¥¯¥é¥¹¤Ë¤Ï¤¿¤¯¤µ¤ó¥á¥½¥Ã¥É¤¬¤¢¤ê¤Þ¤¹¤¬¡¤Ê¬Îह¤ë¤È3¼ïÎà¤Î
+°ú¿ô¤Î¼õ¤±Êý¤¬¤¢¤ê¤Þ¤¹¡¥¤Ò¤È¤Ä¤Ï°ú¿ô¤Î¿ô¤¬¸ÇÄê¤Î¤â¤Î¤Ç¡¤Îã¤È
+¤·¤Æ¤Ïdelete¥á¥½¥Ã¥É¤¬¤¢¤ê¤Þ¤¹¡¥delete¥á¥½¥Ã¥É¤ò¼ÂÁõ¤·¤Æ¤¤¤ë
+fdbm_delete()¤Ï¤³¤Î¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+static VALUE
+fdbm_delete(obj, keystr)
+    VALUE obj, keystr;
+{
+	:
+}
+--
+
+°ú¿ô¤Î¿ô¤¬¸ÇÄê¤Î¥¿¥¤¥×¤ÏÂè1°ú¿ô¤¬self¡¤Âè2°ú¿ô°Ê¹ß¤¬¥á¥½¥Ã¥É
+¤Î°ú¿ô¤È¤Ê¤ê¤Þ¤¹¡¥
+
+°ú¿ô¤Î¿ô¤¬ÉÔÄê¤Î¤â¤Î¤ÏC¤ÎÇÛÎó¤Ç¼õ¤±¤ë¤â¤Î¤Èruby¤ÎÇÛÎó¤Ç¼õ¤±
+¤ë¤â¤Î¤È¤¬¤¢¤ê¤Þ¤¹¡¥dbm¥â¥¸¥å¡¼¥ë¤ÎÃæ¤Ç¡¤C¤ÎÇÛÎó¤Ç¼õ¤±¤ë¤â¤Î
+¤ÏDBM¤Î¥¯¥é¥¹¥á¥½¥Ã¥É¤Ç¤¢¤ëopen()¤Ç¤¹¡¥¤³¤ì¤ò¼ÂÁõ¤·¤Æ¤¤¤ë´Ø
+¿ôfdbm_s_open()¤Ï¤³¤¦¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡¥
+
+--
+static VALUE
+fdbm_s_open(argc, argv, class)
+    int argc;
+    VALUE *argv;
+    VALUE class;
+{
+	:
+    if (rb_scan_args(argc, argv, "11", &file, &vmode) == 1) {
+	mode = 0666;		/* default value */
+    }
+	:
+}
+--
+
+¤³¤Î¥¿¥¤¥×¤Î´Ø¿ô¤ÏÂè1°ú¿ô¤¬Í¿¤¨¤é¤ì¤¿°ú¿ô¤Î¿ô¡¤Âè2°ú¿ô¤¬Í¿¤¨
+¤é¤ì¤¿°ú¿ô¤ÎÆþ¤Ã¤Æ¤¤¤ëÇÛÎó¤Ë¤Ê¤ê¤Þ¤¹¡¥self¤ÏÂè3°ú¿ô¤È¤·¤ÆÍ¿
+¤¨¤é¤ì¤Þ¤¹¡¥
+
+¤³¤ÎÇÛÎó¤ÇÍ¿¤¨¤é¤ì¤¿°ú¿ô¤ò²òÀϤ¹¤ë¤¿¤á¤Î´Ø¿ô¤¬open()¤Ç¤â»È¤ï
+¤ì¤Æ¤¤¤ërb_scan_args()¤Ç¤¹¡¥Âè3°ú¿ô¤Ë»ØÄꤷ¤¿¥Õ¥©¡¼¥Þ¥Ã¥È¤Ë
+½¾¤¤¡¤Âè4ÊÑ¿ô°Ê¹ß¤Ë»ØÄꤷ¤¿ÊÑ¿ô¤ËÃͤòÂåÆþ¤·¤Æ¤¯¤ì¤Þ¤¹¡¥¤³¤Î
+¥Õ¥©¡¼¥Þ¥Ã¥È¤Ï¡¤Âè1ʸ»úÌܤ¬¾Êά¤Ç¤­¤Ê¤¤°ú¿ô¤Î¿ô¡¤Âè2ʸ»úÌܤ¬
+¾Êά¤Ç¤­¤ë°ú¿ô¤Î¿ô¡¤Âè3ʸ»úÌܤ¬Âбþ¤¹¤ëÁê¼ê¤¬Ìµ¤¤¤¢¤Þ¤ê¤Î°ú
+¿ô¤¬¤¢¤ë¤«¤É¤¦¤«¤ò¼¨¤¹"*"¤Ç¤¹¡¥2ʸ»úÌܤÈ3ʸ»úÌܤϾÊά¤Ç¤­¤Þ
+¤¹¡¥dbm.c¤ÎÎã¤Ç¤Ï¡¤¥Õ¥©¡¼¥Þ¥Ã¥È¤Ï"11"¤Ç¤¹¤«¤é¡¤°ú¿ô¤ÏºÇÄã1¤Ä
+¤Ç¡¤2¤Ä¤Þ¤Çµö¤µ¤ì¤ë¤È¤¤¤¦°ÕÌ£¤Ë¤Ê¤ê¤Þ¤¹¡¥¾Êά¤µ¤ì¤Æ¤¤¤ë»þ¤Î
+ÊÑ¿ô¤ÎÃͤÏnil(C¸À¸ì¤Î¥ì¥Ù¥ë¤Ç¤ÏQnil)¤Ë¤Ê¤ê¤Þ¤¹¡¥
+
+ruby¤ÎÇÛÎó¤Ç°ú¿ô¤ò¼õ¤±¼è¤ë¤â¤Î¤Ïindexes¤¬¤¢¤ê¤Þ¤¹¡¥¼ÂÁõ¤Ï¤³
+¤¦¤Ç¤¹¡¥
+
+--
+static VALUE
+fdbm_indexes(obj, args)
+    VALUE obj;
+    struct RArray *args;
+{
+	:
+}
+--
+
+Âè1°ú¿ô¤Ïself¡¤Âè2°ú¿ô¤Ïruby¤ÎÇÛÎó¤Ç¤¹¡¥¤³¤³¤Ç¤Ï¥­¥ã¥¹¥È¤ò¸º
+¤é¤¹¤¿¤á struct RArray* ¤Ç¼õ¤±¤Æ¤¤¤Þ¤¹¤¬¡¤VALUE¤Ç¤âƱ¤¸¤³¤È
+¤Ç¤¹¡¥
+
+** Ãí°Õ»ö¹à
+
+ruby¤È¶¦Í­¤Ï¤·¤Ê¤¤¤¬ruby¤Î¥ª¥Ö¥¸¥§¥¯¥È¤ò³ÊǼ¤¹¤ë²ÄǽÀ­¤Î¤¢¤ë
+C¤ÎÂç°èÊÑ¿ô¤Ï°Ê²¼¤Î´Ø¿ô¤ò»È¤Ã¤Æruby¥¤¥ó¥¿¥×¥ê¥¿¤ËÊÑ¿ô¤Î¸ºß
+¤ò¶µ¤¨¤Æ¤¢¤²¤Æ¤¯¤À¤µ¤¤¡¥¤Ç¤Ê¤¤¤ÈGC¤Ç¥È¥é¥Ö¥ë¤òµ¯¤³¤·¤Þ¤¹¡¥
+
+  void rb_global_variable(VALUE *var)
+
+(5) extconf.rb¤òÍÑ°Õ¤¹¤ë
+
+Makefile¤òºî¤ë¾ì¹ç¤Î¿÷·¿¤Ë¤Ê¤ëextconf.rb¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤òºî¤ê
+¤Þ¤¹¡¥extconf.rb¤Ï¥â¥¸¥å¡¼¥ë¤Î¥³¥ó¥Ñ¥¤¥ë¤ËɬÍפʾò·ï¤Î¥Á¥§¥Ã
+¥¯¤Ê¤É¤ò¹Ô¤¦¤³¤È¤¬ÌÜŪ¤Ç¤¹¡¥extconf.rb¤ÎÃæ¤Ç¤Ï°Ê²¼¤Îruby´Ø¿ô
+¤ò»È¤¦¤³¤È¤¬½ÐÍè¤Þ¤¹¡¥
+
+  have_library(lib, func): ¥é¥¤¥Ö¥é¥ê¤Î¸ºß¥Á¥§¥Ã¥¯
+  have_func(func): ´Ø¿ô¤Î¸ºß¥Á¥§¥Ã¥¯
+  have_header(header): ¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Î¸ºß¥Á¥§¥Ã¥¯
+  create_makefile(target): Makefile¤ÎÀ¸À®
+
+°Ê²¼¤ÎÊÑ¿ô¤ò»È¤¦¤³¤È¤¬¤Ç¤­¤Þ¤¹¡¥
+
+  $CFLAGS: ¥³¥ó¥Ñ¥¤¥ë»þ¤ËÄɲÃŪ¤Ë»ØÄꤹ¤ë¥Õ¥é¥°(-I¤Ê¤É)
+  $LDFLAGS: ¥ê¥ó¥¯»þ¤ËÄɲÃŪ¤Ë»ØÄꤹ¤ë¥Õ¥é¥°(-L¤Ê¤É)
+
+¥â¥¸¥å¡¼¥ë¤ò¥³¥ó¥Ñ¥¤¥ë¤¹¤ë¾ò·ï¤¬Â·¤ï¤Ê¤º¡¤¤½¤Î¥â¥¸¥å¡¼¥ë¤Ï¥³
+¥ó¥Ñ¥¤¥ë¤·¤Ê¤¤»þ¤Ë¤Ïcreate_makefile¤ò¸Æ¤Ð¤Ê¤±¤ì¤ÐMakefile¤Ï
+À¸À®¤µ¤ì¤º¡¤¥³¥ó¥Ñ¥¤¥ë¤â¹Ô¤ï¤ì¤Þ¤»¤ó¡¥
+
+¥â¥¸¥å¡¼¥ë¤¬ruby 1.1ÀìÍѤǤ¢¤ë¾ì¹ç¤Ë¤Ï 
+
+  require 'mkmf'
+
+¤òextconf.rb¤ÎÀèƬ¤ËÃÖ¤¯¤ÈÊØÍø¤Ç¤·¤ç¤¦¡¥
+
+(6) depend¤òÍÑ°Õ¤¹¤ë
+
+¤â¤·¡¤¥Ç¥£¥ì¥¯¥È¥ê¤Ëdepend¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤¹¤ì¤Ð¡¤
+Makefile¤¬°Í¸´Ø·¸¤ò¥Á¥§¥Ã¥¯¤·¤Æ¤¯¤ì¤Þ¤¹¡¥
+
+ % gcc -MM *.c > depend
+
+¤Ê¤É¤Çºî¤ë¤³¤È¤¬½ÐÍè¤Þ¤¹¡¥¤¢¤Ã¤Æ»¤Ï̵¤¤¤Ç¤·¤ç¤¦¡¥
+
+(7) MANIFEST¥Õ¥¡¥¤¥ë¤Ë¥Õ¥¡¥¤¥ë̾¤òÆþ¤ì¤ë
+
+  % ls > MANIFEST
+  % vi MANIFEST
+
+*.o, *~¤Ê¤ÉÉÔɬÍפʥե¡¥¤¥ë°Ê³°¤ÏMANIFEST¤ËÄɲ䷤Ƥª¤­¤Þ¤¹¡¥
+make»þ¤Ë¤ÏMANIFEST¤ÎÆâÍƤϻ²¾È¤·¤Þ¤»¤ó¤Î¤Ç¡¤¶õ¤Î¤Þ¤Þ¤Ç¤âÌäÂê
+¤Ïµ¯¤­¤Þ¤»¤ó¤¬¡¤¥Ñ¥Ã¥±¡¼¥¸¥ó¥°¤Î»þ¤Ë»²¾È¤¹¤ë¤³¤È¤¬¤¢¤ë¤Î¤È¡¤
+ɬÍפʥե¡¥¤¥ë¤ò¶èÊ̤Ǥ­¤ë¤Î¤Ç¡¤ÍÑ°Õ¤·¤Æ¤ª¤¤¤¿Êý¤¬Îɤ¤¤Ç¤·¤ç
+¤¦¡¥
+
+(8) Makefile¤òÀ¸À®¤¹¤ë
+
+Makefile¤ò¼ÂºÝ¤ËÀ¸À®¤¹¤ë¤¿¤á¤Ë¤Ï
+
+  ruby extconf.rb
+
+¤È¤·¤Þ¤¹¡¥extconf.rb¤Ë require 'mkmf' ¤Î¹Ô¤¬¤Ê¤¤¾ì¹ç¤Ë¤Ï¥¨¥é¡¼
+¤Ë¤Ê¤ê¤Þ¤¹¤Î¤Ç¡¤°ú¿ô¤òÄɲä·¤Æ
+
+  ruby -r mkmf extconf.rb
+
+¤È¤·¤Æ¤¯¤À¤µ¤¤¡¥
+
+¥Ç¥£¥ì¥¯¥È¥ê¤òext°Ê²¼¤ËÍÑ°Õ¤·¤¿¾ì¹ç¤Ë¤ÏrubyÁ´ÂΤÎmake¤Î»þ¤Ë
+¼«Æ°Åª¤ËMakefile¤¬À¸À®¤µ¤ì¤Þ¤¹¤Î¤Ç¡¤¤³¤Î¥¹¥Æ¥Ã¥×¤ÏÉÔÍפǤ¹¡¥
+
+(9) make¤¹¤ë
+
+ưŪ¥ê¥ó¥¯¥é¥¤¥Ö¥é¥ê¤òÀ¸À®¤¹¤ë¾ì¹ç¤Ë¤Ï¤½¤Î¾ì¤Çmake¤·¤Æ¤¯¤À¤µ
+¤¤¡¥É¬ÍפǤ¢¤ì¤Ð make install ¤Ç¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤Þ¤¹¡¥
+
+ext°Ê²¼¤Ë¥Ç¥£¥ì¥¯¥È¥ê¤òÍÑ°Õ¤·¤¿¾ì¹ç¤Ï¡¤ruby¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ç
+make¤ò¼Â¹Ô¤¹¤ë¤ÈMakefile¤òÀ¸À®¤«¤émake¡¤É¬Íפˤè¤Ã¤Æ¤Ï¤½¤Î¥â
+¥¸¥å¡¼¥ë¤Îruby¤Ø¤Î¥ê¥ó¥¯¤Þ¤Ç¼«Æ°Åª¤Ë¼Â¹Ô¤·¤Æ¤¯¤ì¤Þ¤¹¡¥
+extconf.rb¤ò½ñ¤­´¹¤¨¤ë¤Ê¤É¤·¤ÆMakefile¤ÎºÆÀ¸À®¤¬É¬Íפʻþ¤Ï¤Þ
+¤¿ruby¥Ç¥£¥ì¥¯¥È¥ê¤Çmake¤·¤Æ¤¯¤À¤µ¤¤¡¥
+
+ưŪ¥ê¥ó¥¯¥é¥¤¥Ö¥é¥ê¤Ïmake install¤Çruby¥é¥¤¥Ö¥é¥ê¤Î¥Ç¥£¥ì¥¯
+¥È¥ê¤Î²¼¤Ë¥³¥Ô¡¼¤µ¤ì¤Þ¤¹¡¥¤â¤·¥â¥¸¥å¡¼¥ë¤È¶¨Ä´¤·¤Æ»È¤¦ruby¤Ç
+µ­½Ò¤µ¤ì¤¿¥×¥í¥°¥é¥à¤¬¤¢¤ê¡¤ruby¥é¥¤¥Ö¥é¥ê¤ËÃÖ¤­¤¿¤¤¾ì¹ç¤Ë¤Ï¡¤
+³ÈÄ¥¥â¥¸¥å¡¼¥ëÍѤΥǥ£¥ì¥¯¥È¥ê¤Î²¼¤Ë lib ¤È¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê
+¤òºî¤ê¡¤¤½¤³¤Ë ³ÈÄ¥»Ò .rb ¤Î¥Õ¥¡¥¤¥ë¤òÃÖ¤¤¤Æ¤ª¤±¤ÐƱ»þ¤Ë¥¤¥ó
+¥¹¥È¡¼¥ë¤µ¤ì¤Þ¤¹¡¥
+
+(10) ¥Ç¥Ð¥Ã¥°
+
+¤Þ¤¢¡¤¥Ç¥Ð¥Ã¥°¤·¤Ê¤¤¤ÈÆ°¤«¤Ê¤¤¤Ç¤·¤ç¤¦¤Í¡¥ext/Setup¤Ë¥Ç¥£¥ì
+¥¯¥È¥ê̾¤ò½ñ¤¯¤ÈÀÅŪ¤Ë¥ê¥ó¥¯¤¹¤ë¤Î¤Ç¥Ç¥Ð¥Ã¥¬¤¬»È¤¨¤ë¤è¤¦¤Ë¤Ê
+¤ê¤Þ¤¹¡¥¤½¤Îʬ¥³¥ó¥Ñ¥¤¥ë¤¬ÃÙ¤¯¤Ê¤ê¤Þ¤¹¤±¤É¡¥
+
+(11) ¤Ç¤­¤¢¤¬¤ê
+
+¸å¤Ï¤³¤Ã¤½¤ê»È¤¦¤Ê¤ê¡¤¹­¤¯¸ø³«¤¹¤ë¤Ê¤ê¡¤Çä¤ë¤Ê¤ê¡¤¤´¼«Í³¤Ë¤ª
+»È¤¤¤¯¤À¤µ¤¤¡¥ruby¤Îºî¼Ô¤Ï³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Ë´Ø¤·¤Æ°ìÀڤθ¢Íø¤ò
+¼çÄ¥¤·¤Þ¤»¤ó¡¥
+
+Appendix A. ruby¤Î¥½¡¼¥¹¥³¡¼¥É¤ÎʬÎà
+
+ruby¤Î¥½¡¼¥¹¤Ï¤¤¤¯¤Ä¤«¤ËʬÎह¤ë¤³¤È¤¬½ÐÍè¤Þ¤¹¡¥¤³¤Î¤¦¤Á¥¯¥é
+¥¹¥é¥¤¥Ö¥é¥ê¤ÎÉôʬ¤Ï´ðËÜŪ¤Ë³ÈÄ¥¥â¥¸¥å¡¼¥ë¤ÈƱ¤¸ºî¤êÊý¤Ë¤Ê¤Ã
+¤Æ¤¤¤Þ¤¹¡¥¤³¤ì¤é¤Î¥½¡¼¥¹¤Ïº£¤Þ¤Ç¤ÎÀâÌÀ¤Ç¤Û¤È¤ó¤ÉÍý²ò¤Ç¤­¤ë¤È
+»×¤¤¤Þ¤¹¡¥
+
+ruby¸À¸ì¤Î¥³¥¢
+
+  class.c
+  error.c
+  eval.c
+  gc.c
+  object.c
+  parse.y
+  variable.c
+
+¥æ¡¼¥Æ¥£¥ê¥Æ¥£´Ø¿ô
+
+  dln.c
+  fnmatch.c
+  glob.c
+  regex.c
+  st.c
+  util.c
+
+ruby¥³¥Þ¥ó¥É¤Î¼ÂÁõ
+
+  dmyext.c
+  inits.c
+  main.c
+  ruby.c
+  version.c
+
+¥¯¥é¥¹¥é¥¤¥Ö¥é¥ê
+
+  array.c
+  bignum.c
+  compar.c
+  dir.c
+  enum.c
+  file.c
+  hash.c
+  io.c
+  marshal.c
+  math.c
+  numeric.c
+  pack.c
+  process.c
+  random.c
+  range.c
+  re.c
+  signal.c
+  sprintf.c
+  string.c
+  struct.c
+  time.c
+
+Appendix B. ³ÈÄ¥ÍÑ´Ø¿ô¥ê¥Õ¥¡¥ì¥ó¥¹
+
+C¸À¸ì¤«¤éruby¤Îµ¡Ç½¤òÍøÍѤ¹¤ëAPI¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¢¤ë¡¥
+
+** ·¿
+
+ VALUE
+
+ruby¥ª¥Ö¥¸¥§¥¯¥È¤òɽ¸½¤¹¤ë·¿¡¥É¬Íפ˱þ¤¸¤Æ¥­¥ã¥¹¥È¤·¤ÆÍѤ¤¤ë¡¥
+ÁȤ߹þ¤ß·¿¤òɽ¸½¤¹¤ëC¤Î·¿¤Ïruby.h¤Ëµ­½Ò¤·¤Æ¤¢¤ëR¤Ç»Ï¤Þ¤ë¹½Â¤
+ÂΤǤ¢¤ë¡¥VALUE·¿¤ò¤³¤ì¤é¤Ë¥­¥ã¥¹¥È¤¹¤ë¤¿¤á¤ËR¤Ç»Ï¤Þ¤ë¹½Â¤ÂÎ
+̾¤òÁ´¤ÆÂçʸ»ú¤Ë¤·¤¿Ì¾Á°¤Î¥Þ¥¯¥í¤¬ÍÑ°Õ¤µ¤ì¤Æ¤¤¤ë¡¥
+
+** ÊÑ¿ô¡¦Äê¿ô
+
+ Qnil
+
+Äê¿ô: nil¥ª¥Ö¥¸¥§¥¯¥È
+
+ TRUE
+
+Äê¿ô: true¥ª¥Ö¥¸¥§¥¯¥È(¿¿¤Î¥Ç¥Õ¥©¥ë¥ÈÃÍ)
+
+ FALSE
+
+Äê¿ô: false¥ª¥Ö¥¸¥§¥¯¥È
+
+** C¥Ç¡¼¥¿¤Î¥«¥×¥»¥ë²½
+
+ Data_Wrap_Struct(VALUE class, void (*mark)(), void (*free)(), void *sval)
+
+C¤ÎǤ°Õ¤Î¥Ý¥¤¥ó¥¿¤ò¥«¥×¥»¥ë²½¤·¤¿ruby¥ª¥Ö¥¸¥§¥¯¥È¤òÊÖ¤¹¡¥¤³
+¤Î¥Ý¥¤¥ó¥¿¤¬ruby¤«¤é¥¢¥¯¥»¥¹¤µ¤ì¤Ê¤¯¤Ê¤Ã¤¿»þ¡¤free¤Ç»ØÄꤷ¤¿
+´Ø¿ô¤¬¸Æ¤Ð¤ì¤ë¡¥¤Þ¤¿¡¤¤³¤Î¥Ý¥¤¥ó¥¿¤Î»Ø¤¹¥Ç¡¼¥¿¤¬Â¾¤Îruby¥ª¥Ö
+¥¸¥§¥¯¥È¤ò»Ø¤·¤Æ¤¤¤ë¾ì¹ç¡¤mark¤Ë»ØÄꤹ¤ë´Ø¿ô¤Ç¥Þ¡¼¥¯¤¹¤ëɬÍ×
+¤¬¤¢¤ë¡¥
+
+ Data_Make_Struct(class, type, mark, free, sval)
+
+type·¿¤Î¥á¥â¥ê¤òmalloc¤·¡¤ÊÑ¿ôsval¤ËÂåÆþ¤·¤¿¸å¡¤¤½¤ì¤ò¥«¥×¥»
+¥ë²½¤·¤¿¥Ç¡¼¥¿¤òÊÖ¤¹¥Þ¥¯¥í¡¥
+
+ Data_Get_Struct(data, type, sval)
+
+data¤«¤étype·¿¤Î¥Ý¥¤¥ó¥¿¤ò¼è¤ê½Ð¤·ÊÑ¿ôsval¤ËÂåÆþ¤¹¤ë¥Þ¥¯¥í¡¥
+
+** ·¿¥Á¥§¥Ã¥¯
+
+ TYPE(value)
+ FIXNUM_P(value)
+ NIL_P(value)
+ void Check_Type(VALUE value, int type)
+ void Check_SafeStr(VALUE value)
+
+** ·¿ÊÑ´¹
+
+ FIX2INT(value)
+ INT2FIX(i)
+ NUM2INT(value)
+ INT2NUM(i)
+ NUM2DBL(value)
+ float_new(f)
+ STR2CSTR(value)
+ str_new2(s)
+
+** ¥¯¥é¥¹/¥â¥¸¥å¡¼¥ëÄêµÁ
+
+ VALUE rb_define_class(char *name, VALUE super)
+
+super¤Î¥µ¥Ö¥¯¥é¥¹¤È¤·¤Æ¿·¤·¤¤ruby¥¯¥é¥¹¤òÄêµÁ¤¹¤ë¡¥
+
+ VALUE rb_define_class_under(VALUE module, char *name, VALUE super)
+
+super¤Î¥µ¥Ö¥¯¥é¥¹¤È¤·¤Æ¿·¤·¤¤ruby¥¯¥é¥¹¤òÄêµÁ¤·¡¤module¤ÎÄê
+¿ô¤È¤·¤ÆÄêµÁ¤¹¤ë¡¥
+
+ VALUE rb_define_module(char *name)
+
+¿·¤·¤¤ruby¥â¥¸¥å¡¼¥ë¤òÄêµÁ¤¹¤ë¡¥
+
+ VALUE rb_define_module_under(VALUE module, char *name, VALUE super)
+
+¿·¤·¤¤ruby¥â¥¸¥å¡¼¥ë¤òÄêµÁ¤·¡¤module¤ÎÄê¿ô¤È¤·¤ÆÄêµÁ¤¹¤ë¡¥
+
+ void rb_include_module(VALUE class, VALUE module)
+
+¥â¥¸¥å¡¼¥ë¤ò¥¤¥ó¥¯¥ë¡¼¥É¤¹¤ë¡¥class¤¬¤¹¤Ç¤Ëmodule¤ò¥¤¥ó¥¯¥ë¡¼
+¥É¤·¤Æ¤¤¤ë»þ¤Ë¤Ï²¿¤â¤·¤Ê¤¤(¿½Å¥¤¥ó¥¯¥ë¡¼¥É¤Î¶Ø»ß)¡¥
+
+ void rb_extend_object(VALUE object, VALUE module)
+
+¥ª¥Ö¥¸¥§¥¯¥È¤ò¥â¥¸¥å¡¼¥ë(¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë¥á¥½¥Ã¥É)¤Ç³ÈÄ¥¤¹¤ë¡¥
+
+** Âç°èÊÑ¿ôÄêµÁ
+
+ void rb_define_variable(char *name, VALUE *var)
+
+ruby¤ÈC¤È¤Ç¶¦Í­¤¹¤ë¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥ÊÑ¿ô̾¤¬`$'¤Ç»Ï
+¤Þ¤é¤Ê¤¤»þ¤Ë¤Ï¼«Æ°Åª¤ËÄɲ䵤ì¤ë¡¥name¤È¤·¤Æruby¤Î¼±Ê̻ҤȤ·
+¤Æµö¤µ¤ì¤Ê¤¤Ê¸»ú(Î㤨¤Ð` ')¤ò´Þ¤à¾ì¹ç¤Ë¤Ïruby¥×¥í¥°¥é¥à¤«¤é
+¤Ï¸«¤¨¤Ê¤¯¤Ê¤ë¡¥
+
+ void rb_define_readonly_variable(char *name, VALUE *var)
+
+ruby¤ÈC¤È¤Ç¶¦Í­¤¹¤ëread only¤Î¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥read
+only¤Ç¤¢¤ë¤³¤È°Ê³°¤Ïrb_define_variable()¤ÈƱ¤¸¡¥
+
+ void rb_define_virtual_variable(char *name,
+				VALUE (*getter)(), VALUE (*setter)())
+
+´Ø¿ô¤Ë¤è¤Ã¤Æ¼Â¸½¤µ¤ì¤ërubyÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥ÊÑ¿ô¤¬»²¾È¤µ¤ì¤¿»þ
+¤Ë¤Ïgetter¤¬¡¤ÊÑ¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì¤¿»þ¤Ë¤Ïsetter¤¬¸Æ¤Ð¤ì¤ë¡¥
+
+ void rb_define_hooked_variable(char *name, VALUE *var,
+				VALUE (*getter)(), VALUE (*setter)())
+
+´Ø¿ô¤Ë¤è¤Ã¤Æhook¤Î¤Ä¤±¤é¤ì¤¿¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÄêµÁ¤¹¤ë¡¥ÊÑ¿ô¤¬
+»²¾È¤µ¤ì¤¿»þ¤Ë¤Ïgetter¤¬¡¤´Ø¿ô¤ËÃͤ¬¥»¥Ã¥È¤µ¤ì¤¿»þ¤Ë¤Ïsetter
+¤¬¸Æ¤Ð¤ì¤ë¡¥getter¤äsetter¤Ë0¤ò»ØÄꤷ¤¿»þ¤Ë¤Ïhook¤ò»ØÄꤷ¤Ê
+¤¤¤Î¤ÈƱ¤¸»ö¤Ë¤Ê¤ë¡¥
+
+ void rb_global_variable(VALUE *var)
+
+GC¤Î¤¿¤á¡¤ruby¥×¥í¥°¥é¥à¤«¤é¤Ï¥¢¥¯¥»¥¹¤µ¤ì¤Ê¤¤¤¬, ruby¥ª¥Ö¥¸¥§
+¥¯¥È¤ò´Þ¤àÂç°èÊÑ¿ô¤ò¥Þ¡¼¥¯¤¹¤ë¡¥
+
+** ¥¯¥é¥¹Äê¿ô
+
+ void rb_define_const(VALUE class, char *name, VALUE val)
+
+¥¯¥é¥¹Äê¿ô¤òÄêµÁ¤¹¤ë¡¥
+
+ void rb_define_global_const(char *name, VALUE val)
+
+Âç°èÄê¿ô¤òÄêµÁ¤¹¤ë¡¥
+
+     rb_define_const(cKernal, name, val)
+
+¤ÈƱ¤¸°ÕÌ£¡¥
+
+** ¥á¥½¥Ã¥ÉÄêµÁ
+
+ rb_define_method(VALUE class, char *name, VALUE (*func)(), int argc)
+
+¥á¥½¥Ã¥É¤òÄêµÁ¤¹¤ë¡¥argc¤Ïself¤ò½ü¤¯°ú¿ô¤Î¿ô¡¥argc¤¬-1¤Î»þ, 
+´Ø¿ô¤Ë¤Ï°ú¿ô¤Î¿ô(self¤ò´Þ¤Þ¤Ê¤¤)¤òÂè1°ú¿ô, °ú¿ô¤ÎÇÛÎó¤òÂè2°ú
+¿ô¤È¤¹¤ë·Á¼°¤ÇÍ¿¤¨¤é¤ì¤ë(Âè3°ú¿ô¤Ïself)¡¥argc¤¬-2¤Î»þ, Âè1°ú
+¿ô¤¬self, Âè2°ú¿ô¤¬args(args¤Ï°ú¿ô¤ò´Þ¤àruby¤ÎÇÛÎó)¤È¤¤¤¦·Á
+¼°¤ÇÍ¿¤¨¤é¤ì¤ë¡¥
+
+ rb_define_private_method(VALUE class, char *name, VALUE (*func)(), int argc)
+
+private¥á¥½¥Ã¥É¤òÄêµÁ¤¹¤ë¡¥°ú¿ô¤Ïrb_define_method()¤ÈƱ¤¸¡¥
+
+ rb_define_singleton_method(VALUE class, char *name, VALUE (*func)(), int argc)
+
+Æðۥ᥽¥Ã¥É¤òÄêµÁ¤¹¤ë¡¥°ú¿ô¤Ïrb_define_method()¤ÈƱ¤¸¡¥
+
+ rb_scan_args(int atgc, VALUE *argv, char *fmt, ...)
+
+argc,argv·Á¼°¤ÇÍ¿¤¨¤é¤ì¤¿°ú¿ô¤òʬ²ò¤¹¤ë¡¥fmt¤Ïɬ¿Ü°ú¿ô¤Î¿ô, 
+Éղðú¿ô¤Î¿ô, »Ä¤ê¤Î°ú¿ô¤¬¤¢¤ë¤«¤ò»ØÄꤹ¤ëʸ»úÎó¤Ç, "¿ô»ú¿ô
+»ú*"¤È¤¤¤¦·Á¼°¤Ç¤¢¤ë¡¥ 2 ÈÖÌܤοô»ú¤È"*"¤Ï¤½¤ì¤¾¤ì¾Êά²Äǽ¤Ç
+¤¢¤ë¡¥É¬¿Ü°ú¿ô¤¬°ì¤Ä¤â¤Ê¤¤¾ì¹ç¤Ï0¤ò»ØÄꤹ¤ë¡¥Âè3°ú¿ô°Ê¹ß¤ÏÊÑ
+¿ô¤Ø¤Î¥Ý¥¤¥ó¥¿¤Ç, ³ºÅö¤¹¤ëÍ×ÁǤ¬¤½¤ÎÊÑ¿ô¤Ë³ÊǼ¤µ¤ì¤ë¡¥Éղðú
+¿ô¤ËÂбþ¤¹¤ë°ú¿ô¤¬Í¿¤¨¤é¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¤ÏÊÑ¿ô¤ËQnil¤¬ÂåÆþ¤µ¤ì
+¤ë¡¥
+
+** ruby¥á¥½¥Ã¥É¸Æ¤Ó½Ð¤·
+
+ VALUE rb_funcall(VALUE recv, ID mid, int narg, ...)
+
+¥á¥½¥Ã¥É¸Æ¤Ó½Ð¤·¡¥Ê¸»úÎ󤫤émid¤òÆÀ¤ë¤¿¤á¤Ë¤Ïrb_intern()¤ò»È¤¦¡¥
+
+ VALUE rb_funcall2(VALUE recv, ID mid, int argc, VALUE *argv)
+
+¥á¥½¥Ã¥É¸Æ¤Ó½Ð¤·¡¥°ú¿ô¤òargc,argv·Á¼°¤ÇÅϤ¹¡¥
+
+ VALUE rb_eval_string(char *str)
+
+ʸ»úÎó¤òruby¤È¥¹¥¯¥ê¥×¥È¤·¤Æ¥³¥ó¥Ñ¥¤¥ë¡¦¼Â¹Ô¤¹¤ë¡¥
+
+ ID rb_intern(char *name)
+
+ʸ»úÎó¤ËÂбþ¤¹¤ëID¤òÊÖ¤¹¡¥
+
+ char *rb_id2name(ID id)
+
+ID¤ËÂбþ¤¹¤ëʸ»úÎó¤òÊÖ¤¹(¥Ç¥Ð¥Ã¥°ÍÑ)¡¥
+
+ char *rb_class2name(VALUE class)
+
+class¤Î̾Á°¤òÊÖ¤¹(¥Ç¥Ð¥Ã¥°ÍÑ)¡¥class¤¬Ì¾Á°¤ò»ý¤¿¤Ê¤¤»þ¤Ë¤Ï, 
+ÁÄÀè¤òÁ̤äÆ̾Á°¤ò»ý¤Ä¥¯¥é¥¹¤Î̾Á°¤òÊÖ¤¹¡¥
+
+** ¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô
+
+ VALUE rb_iv_get(VALUE obj, char *name)
+
+obj¤Î¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô¤ÎÃͤòÆÀ¤ë¡¥`@'¤Ç»Ï¤Þ¤é¤Ê¤¤¥¤¥ó¥¹¥¿¥ó¥¹
+ÊÑ¿ô¤Ï ruby¥×¥í¥°¥é¥à¤«¤é¥¢¥¯¥»¥¹¤Ç¤­¤Ê¤¤¡Ö±£¤ì¤¿¡×¥¤¥ó¥¹¥¿
+¥ó¥¹ÊÑ¿ô¤Ë¤Ê¤ë¡¥Äê¿ô¤ÏÂçʸ»ú¤Î̾Á°¤ò»ý¤Ä¥¯¥é¥¹(¤Þ¤¿¤Ï¥â¥¸¥å¡¼
+¥ë)¤Î¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô¤È¤·¤Æ¼ÂÁõ¤µ¤ì¤Æ¤¤¤ë¡¥
+
+ VALUE rb_iv_set(VALUE obj, char *name, VALUE val)
+
+obj¤Î¥¤¥ó¥¹¥¿¥ó¥¹ÊÑ¿ô¤òval¤Ë¥»¥Ã¥È¤¹¤ë¡¥
+
+** À©¸æ¹½Â¤
+
+ VALUE rb_iterate(VALUE (*func1)(), void *arg1, VALUE (*func2)(), void *arg2)
+
+func2¤ò¥Ö¥í¥Ã¥¯¤È¤·¤ÆÀßÄꤷ, func1¤ò¥¤¥Æ¥ì¡¼¥¿¤È¤·¤Æ¸Æ¤Ö¡¥ 
+func1¤Ë¤Ï arg1¤¬°ú¿ô¤È¤·¤ÆÅϤµ¤ì, func2¤Ë¤ÏÂè1°ú¿ô¤Ë¥¤¥Æ¥ì¡¼
+¥¿¤«¤éÍ¿¤¨¤é¤ì¤¿ÃÍ, Âè2°ú¿ô¤Ëarg2¤¬ÅϤµ¤ì¤ë¡¥
+ 
+ VALUE rb_yield(VALUE val)
+
+val¤òÃͤȤ·¤Æ¥¤¥Æ¥ì¡¼¥¿¥Ö¥í¥Ã¥¯¤ò¸Æ¤Ó½Ð¤¹¡¥
+
+ VALUE rb_rescue(VALUE (*func1)(), void *arg1, VALUE (*func2)(), void *arg2)
+
+´Ø¿ôfunc1¤òarg1¤ò°ú¿ô¤Ë¸Æ¤Ó½Ð¤¹¡¥func1¤Î¼Â¹ÔÃæ¤ËÎã³°¤¬È¯À¸¤·
+¤¿»þ¤Ë¤Ï func2¤òarg2¤ò°ú¿ô¤È¤·¤Æ¸Æ¤Ö¡¥Ìá¤êÃͤÏÎã³°¤¬È¯À¸¤·¤Ê
+¤«¤Ã¤¿»þ¤Ïfunc1¤ÎÌá¤êÃÍ, Îã³°¤¬È¯À¸¤·¤¿»þ¤Ë¤Ïfunc2¤ÎÌá¤êÃͤÇ
+¤¢¤ë¡¥
+
+ VALUE rb_ensure(VALUE (*func1)(), void *arg1, void (*func2)(), void *arg2)
+
+´Ø¿ôfunc1¤òarg1¤ò°ú¿ô¤È¤·¤Æ¼Â¹Ô¤·, ¼Â¹Ô½ªÎ»¸å(¤¿¤È¤¨Îã³°¤¬È¯
+À¸¤·¤Æ¤â) func2¤òarg2¤ò°ú¿ô¤È¤·¤Æ¼Â¹Ô¤¹¤ë¡¥Ìá¤êÃͤÏfunc1¤ÎÌá
+¤êÃͤǤ¢¤ë(Îã³°¤¬È¯À¸¤·¤¿»þ¤ÏÌá¤é¤Ê¤¤)¡¥
+
+** Îã³°¡¦¥¨¥é¡¼
+
+ void Warning(char *fmt, ...)
+
+verbose»þ¤Ëɸ½à¥¨¥é¡¼½ÐÎϤ˷ٹð¾ðÊó¤òɽ¼¨¤¹¤ë¡¥°ú¿ô¤Ïprintf()¤ÈƱ¤¸¡¥
+
+ void Fail(char *fmt, ...)
+
+RuntimeErrorÎã³°¤òȯÀ¸¤µ¤»¤ë¡¥°ú¿ô¤Ïprintf()¤ÈƱ¤¸¡¥
+
+ void Raise(VALUE exception, char *fmt, ...)
+
+exception¤Ç»ØÄꤷ¤¿Îã³°¤òȯÀ¸¤µ¤»¤ë¡¥fmt°Ê²¼¤Î°ú¿ô¤Ïprintf()¤ÈƱ¤¸¡¥
+
+ void Fatal(char *fmt, ...)
+
+Ã×̿ŪÎã³°¤òȯÀ¸¤µ¤»¤ë¡¥Ä̾ï¤ÎÎã³°½èÍý¤Ï¹Ô¤Ê¤ï¤ì¤º, ¥¤¥ó¥¿¡¼
+¥×¥ê¥¿¤¬½ªÎ»¤¹¤ë(¤¿¤À¤·ensure¤Ç»ØÄꤵ¤ì¤¿¥³¡¼¥É¤Ï½ªÎ»Á°¤Ë¼Â
+¹Ô¤µ¤ì¤ë)¡¥
+
+ void Bug(char *fmt, ...)
+
+¥¤¥ó¥¿¡¼¥×¥ê¥¿¤Ê¤É¥×¥í¥°¥é¥à¤Î¥Ð¥°¤Ç¤·¤«È¯À¸¤¹¤ë¤Ï¤º¤Î¤Ê¤¤¾õ
+¶·¤Î»þ¸Æ¤Ö¡¥¥¤¥ó¥¿¡¼¥×¥ê¥¿¤Ï¥³¥¢¥À¥ó¥×¤·Ä¾¤Á¤Ë½ªÎ»¤¹¤ë¡¥Îã³°
+½èÍý¤Ï°ìÀڹԤʤï¤ì¤Ê¤¤¡¥
+
+** ruby¤Î½é´ü²½¡¦¼Â¹Ô
+
+ruby¤ò¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ËËä¤á¹þ¤à¾ì¹ç¤Ë¤Ï°Ê²¼¤Î¥¤¥ó¥¿¥Õ¥§¡¼¥¹
+¤ò»È¤¦¡¥Ä̾ï¤Î³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Ë¤ÏɬÍפʤ¤¡¥
+
+ void ruby_init(int argc, char **argv, char **envp)
+
+ruby¥¤¥ó¥¿¥×¥ê¥¿¤Î½é´ü²½¤ò¹Ô¤Ê¤¦¡¥
+
+ void ruby_run()
+
+ruby¥¤¥ó¥¿¥×¥ê¥¿¤ò¼Â¹Ô¤¹¤ë¡¥
+
+ void ruby_script(char *name)
+
+ruby¤Î¥¹¥¯¥ê¥×¥È̾($0)¤òÀßÄꤹ¤ë¡¥
+
+
+Appendix B. extconf.rb¤Ç»È¤¨¤ë´Ø¿ô¤¿¤Á
+
+extconf.rb¤ÎÃæ¤Ç¤ÏÍøÍѲÄǽ¤Ê¥³¥ó¥Ñ¥¤¥ë¾ò·ï¥Á¥§¥Ã¥¯¤Î´Ø¿ô¤Ï°Ê
+²¼¤ÎÄ̤ê¤Ç¤¢¤ë¡¥
+
+ have_library(lib, func)
+
+´Ø¿ôfunc¤òÄêµÁ¤·¤Æ¤¤¤ë¥é¥¤¥Ö¥é¥êlib¤Î¸ºß¤ò¥Á¥§¥Ã¥¯¤¹¤ë¡¥¥é
+¥¤¥Ö¥é¥ê¤¬Â¸ºß¤¹¤ë»þ¡¤TRUE¤òÊÖ¤¹¡¥
+
+ have_func(func)
+
+´Ø¿ôfunc¤Î¸ºß¤ò¥Á¥§¥Ã¥¯¤¹¤ë¡¥func¤¬É¸½à¤Ç¤Ï¥ê¥ó¥¯¤µ¤ì¤Ê¤¤¥é
+¥¤¥Ö¥é¥êÆâ¤Î¤â¤Î¤Ç¤¢¤ë»þ¤Ë¤ÏÀè¤Ëhave_library¤Ç¤½¤Î¥é¥¤¥Ö¥é¥ê
+¤ò¥Á¥§¥Ã¥¯¤·¤Æ¤ª¤¯»ö¡¥´Ø¿ô¤¬Â¸ºß¤¹¤ë»þTRUE¤òÊÖ¤¹¡¥
+
+ have_header(header)
+
+¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤Î¸ºß¤ò¥Á¥§¥Ã¥¯¤¹¤ë¡¥¥Ø¥Ã¥À¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤¹¤ë
+»þTRUE¤òÊÖ¤¹¡¥
+
+ create_makefile(target)
+
+³ÈÄ¥¥â¥¸¥å¡¼¥ëÍѤÎMakefile¤òÀ¸À®¤¹¤ë¡¥¤³¤Î´Ø¿ô¤ò¸Æ¤Ð¤Ê¤±¤ì¤Ð
+¤½¤Î¥â¥¸¥å¡¼¥ë¤Ï¥³¥ó¥Ñ¥¤¥ë¤µ¤ì¤Ê¤¤¡¥target¤Ï¥â¥¸¥å¡¼¥ë̾¤òɽ
+¤¹¡¥
+
+/*
+ * Local variables:
+ * fill-column: 60
+ * end:
+ */
diff --git a/README.ja.md b/README.ja.md
deleted file mode 100644
index bee6433c62..0000000000
--- a/README.ja.md
+++ /dev/null
@@ -1,185 +0,0 @@
-[![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��
-
-Ruby�シンプル��強力�オブジェクト指�スクリプト言語��． Ruby�純粋�オブジェクト指�言語���設計�れ��る��，
-オブジェクト指�プログラミングを手軽�行�事�出���．も��ん普通�手続�型�プログラミングも�能��．
-
-Ruby�テキスト処�関係�能力���優れ，Perl����ら�強力��．�ら�シンプル�文法�，
-例外処�やイテレータ���機構�よ��，より分�りや��プログラミング�出���．
-
-## Ruby�特長
-
-*   シンプル�文法
-*   普通�オブジェクト指�機能(クラス，メソッドコール��)
-*   特殊�オブジェクト指�機能(Mixin，特異メソッド��)
-*   演算�オー�ーロード
-*   例外処�機能
-*   イテレータ�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�ャ�よる)
-*   移�性�高�．多��Unix-like/POSIX互�プラットフォーム上�動������，Windows， macOS，
-    Haiku���上�も動� 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��方法を�むRuby�インストール方法�一覧�
-
-https://www.ruby-lang.org/ja/downloads/
-
-を�照������．
-
-### Git
-
-ミラーをGitHub�公開�����． 以下�コマンド�リ�ジトリを�得����．
-
-    $ git clone https://github.com/ruby/ruby.git
-
-他�ブラン��一覧�次�コマンド�見られ��．
-
-    $ git ls-remote https://github.com/ruby/ruby.git
-
-Rubyリ�ジトリ�本��master� https://git.ruby-lang.org/ruby.git ��り��．
-コミッタ���らを使���．
-
-### Subversion
-
-��Ruby��ージョン�ソースコード�次�コマンド��得����．
-
-    $ svn co https://svn.ruby-lang.org/repos/ruby/branches/ruby_2_6/ ruby
-
-他�開発中�ブラン��一覧�次�コマンド�見られ��．
-
-    $ svn ls https://svn.ruby-lang.org/repos/ruby/branches/
-
-
-## ホームページ
-
-Ruby�ホームページ�URL�
-
-https://www.ruby-lang.org/
-
-��．
-
-## メーリングリスト
-
-Ruby�メーリングリスト��り��．�加希望�方�
-
-mailto:ruby-list-request@ruby-lang.org
-
-��本文�
-
-    subscribe
-
-�書�����下��．
-
-Ruby開発者��メーリングリストも�り��．��ら��ruby��グ，将��仕様拡張��実装上��題����議論�れ����． �加希望�方�
-
-mailto:ruby-dev-request@ruby-lang.org
-
-��ruby-list��様�方法�メール������．
-
-Ruby拡張モジュール����話���ruby-extメーリングリスト�数学関係�話題����話���ruby-mathメーリングリスト�
-英語�ruby����話���ruby-talkメーリングリストも�り��．�加方法��れも����．
-
-## コンパイル・インストール
-
-以下�手順�行������．
-
-1.  も� `configure` ファイル�見��ら��，も��� `configure.ac` より��よ��ら， `autoconf` を実行��
-    新�� `configure` を生��る
-
-2.  `configure` を実行�� `Makefile` ��を生��る
-
-    環境�よ���デフォルト�Cコンパイラ用オプション�付���． `configure` オプション� `optflags=..`
-    `warnflags=..` 等�上書�����．
-
-3.  (必��ら�)`include/ruby/defines.h` を編集�る
-
-    多分，必�無������．
-
-4.  (必��ら�)`ext/Setup` ��的�リンク�る拡張モジュールを指定�る
-
-    `ext/Setup` �記述��モジュール��的�リンク�れ��．
-
-    ダイナミックローディングをサ�ート�����アーキテク�ャ�� `Setup` �1行目�「`option nodynamic`����行�コ
-    メントを外�必���り��．
-    ��，��アーキテク�ャ�拡張モジュールを利用�る����，�ら����的�リンクを����必���り��．
-
-5.  `make` を実行��コンパイル�る
-
-6.  `make check`�テストを行�．
-
-    「`check succeeded`��表示�れれ��功��．���テスト��功��も完璧���証�れ��る訳���り��ん．
-
-7.  `make install`
-
-    以下�ディレクトリを作��，���ファイルをインストー ル���．
-
-    *   `${DESTDIR}${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�API�ージョン�'*x.y.z*'��れ�，`${MAJOR}`�
-    '*x*'�，`${MINOR}`�'*y*'，`${TEENY}`�'*z*'��．
-
-    **注�**: API�ージョン� `teeny` �，Rubyプログラム��ージョン��異�る����り��．
-
-    `root` �作業�る必���る�も�れ��ん．
-
-
-も�，コンパイル時�エラー�発生��場���エラー�ログ�マシン，OS�種類を�む��る��詳��レ�ートを作者����下�る�他�方����も�り��．
-
-## 移�
-
-UNIX��れ� `configure` ���ん��差異を�����れる�����，���見�������場�(�る事�多�)，作者���
-��を報告�れ�，解決��る�能性��り��．
-
-アーキテク�ャ�も��も�存�る��GC部��．Ruby�GC�対象
-�アーキテク�ャ�`setjmp()`���`getcontext()`�よ��全��レジスタを `jmp_buf` や `ucontext_t`
-�格��る���， `jmp_buf` や `ucontext_t` �スタック�32bitアラインメント�れ��る��を仮定
-�����．特��者��立���場��対応��常�困難��ょ�． 後者�解決�比較的簡��， `gc.c` �スタックをマーク���る
-部分�アラインメント��イト数���ら��マーク�るコードを追加�る���済���．`defined(__mc68000__)`�括られ��
-る部分を�考�������．
-
-レジスタウィンドウを��CPU��，レジスタウィンドウをスタック�フラッシュ�るアセンブラコードを追加�る必���る�も�れ��ん．
-
-## �布�件
-
-[COPYING.ja](COPYING.ja) ファイルを�照������．
-
-## フィード�ック
-
-Ruby�関�る質�� 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/) ���Webサイト�投稿������．
-
-�グ報告� https://bugs.ruby-lang.org ���付�����．
-
-
-## 著者
-
-Ruby�オリジナル版�，1995年���も�ゆ�����よ��設計・開発�れ���．
-
-<mailto:matz@ruby-lang.org>
diff --git a/README.jp b/README.jp
new file mode 100644
index 0000000000..00822a3658
--- /dev/null
+++ b/README.jp
@@ -0,0 +1,169 @@
+* Ruby¤È¤Ï
+
+Ruby¤Ï¥·¥ó¥×¥ë¤«¤Ä¶¯ÎϤʥª¥Ö¥¸¥§¥¯¥È»Ø¸þ¥¹¥¯¥ê¥×¥È¸À¸ì¤Ç¤¹¡¥
+Ruby¤ÏºÇ½é¤«¤é½ã¿è¤Ê¥ª¥Ö¥¸¥§¥¯¥È»Ø¸þ¸À¸ì¤È¤·¤ÆÀ߷פµ¤ì¤Æ¤¤¤Þ
+¤¹¤«¤é¡¤¥ª¥Ö¥¸¥§¥¯¥È»Ø¸þ¥×¥í¥°¥é¥ß¥ó¥°¤ò¼ê·Ú¤Ë¹Ô¤¦»ö¤¬½ÐÍè¤Þ
+¤¹¡¥¤â¤Á¤í¤óÄ̾ï¤Î¼ê³¤­·¿¤Î¥×¥í¥°¥é¥ß¥ó¥°¤â²Äǽ¤Ç¤¹¡¥
+
+Ruby¤Ï¥Æ¥­¥¹¥È½èÍý´Ø·¸¤ÎǽÎϤʤɤËÍ¥¤ì¡¤perl¤ÈƱ¤¸¤¯¤é¤¤¶¯ÎÏ
+¤Ç¤¹¡¥¤µ¤é¤Ë¥·¥ó¥×¥ë¤Êʸˡ¤È¡¤Îã³°½èÍý¤ä¥¤¥Æ¥ì¡¼¥¿¤Ê¤É¤Îµ¡¹½
+¤Ë¤è¤Ã¤Æ¡¤¤è¤êʬ¤«¤ê¤ä¤¹¤¤¥×¥í¥°¥é¥ß¥ó¥°¤¬½ÐÍè¤Þ¤¹¡¥
+
+
+* Ruby¤ÎÆÃĹ¡¥
+
+  + ¥·¥ó¥×¥ë¤Êʸˡ
+  + ÉáÄ̤Υª¥Ö¥¸¥§¥¯¥È»Ø¸þµ¡Ç½(¥¯¥é¥¹¡¤¥á¥½¥Ã¥É¥³¡¼¥ë¤Ê¤É)
+  + Æüì¤Ê¥ª¥Ö¥¸¥§¥¯¥È»Ø¸þµ¡Ç½(Mixin, Æðۥ᥽¥Ã¥É¤Ê¤É)
+  + ±é»»»Ò¥ª¡¼¥Ð¡¼¥í¡¼¥É
+  + Îã³°½èÍýµ¡Ç½
+  + ¥¤¥Æ¥ì¡¼¥¿¤È¥¯¥í¡¼¥¸¥ã
+  + ¥¬¡¼¥Ù¡¼¥¸¥³¥ì¥¯¥¿
+  + ¥À¥¤¥Ê¥ß¥Ã¥¯¥í¡¼¥Ç¥£¥ó¥° (¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤Ë¤è¤ë)
+  + °Ü¿¢À­¤¬¹â¤¤¡¥Â¿¤¯¤ÎUNIX¾å¤ÇÆ°¤¯
+
+
+* Æþ¼êË¡
+
+** ftp¤Ç
+
+°Ê²¼¤Î¾ì½ê¤Ë¤ª¤¤¤Æ¤¢¤ê¤Þ¤¹¡¥
+
+  ftp://ftp.netlab.co.jp/pub/lang/ruby/
+
+
+* ¥Û¡¼¥à¥Ú¡¼¥¸
+
+ Ruby¤Î¥Û¡¼¥à¥Ú¡¼¥¸¤ÎURL¤Ï
+
+   http://www.netlab.co.jp/ruby/jp/
+
+ ¤Ç¤¹¡¥
+
+
+* ¥á¥¤¥ê¥ó¥°¥ê¥¹¥È
+
+ Ruby¤Ë´Ø¤ï¤ëÏÃÂê¤Î¤¿¤á¤Î¥á¥¤¥ê¥ó¥°¥ê¥¹¥È¤ò³«Àߤ·¤Þ¤·¤¿¡¥¥¢
+ ¥É¥ì¥¹¤Ï
+
+   ruby-list@netlab.co.jp
+
+ ¤Ç¤¹¡¥¤³¤Î¥¢¥É¥ì¥¹¤Ë¥á¥¤¥ë¤òÁ÷¤ì¤Ð¡¤¼«Æ°Åª¤ËÅÐÏ¿¤µ¤ì¤Þ¤¹¡¥
+
+
+* ¥³¥ó¥Ñ¥¤¥ë¡¦¥¤¥ó¥¹¥È¡¼¥ë
+
+°Ê²¼¤Î¼ê½ç¤Ç¹Ô¤Ã¤Æ¤¯¤À¤µ¤¤¡¥
+
+  1. configure¤ò¼Â¹Ô¤·¤ÆMakefile¤Ê¤É¤òÀ¸À®¤¹¤ë
+
+  2. (ɬÍפʤé¤Ð)defines.h¤òÊÔ½¸¤¹¤ë
+
+     ¿ʬ¡¤É¬Í×̵¤¤¤È»×¤¤¤Þ¤¹¡¥
+
+  3. (ɬÍפʤé¤Ð)ext/Setup¤ËÀÅŪ¤Ë¥ê¥ó¥¯¤¹¤ë³ÈÄ¥¥â¥¸¥å¡¼¥ë¤ò
+     »ØÄꤹ¤ë
+
+     ext/Setup¤Ëµ­½Ò¤·¤¿¥â¥¸¥å¡¼¥ë¤ÏÀÅŪ¤Ë¥ê¥ó¥¯¤µ¤ì¤Þ¤¹¡¥
+
+     ¥À¥¤¥Ê¥ß¥Ã¥¯¥í¡¼¥Ç¥£¥ó¥°¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤Ê¤¤¥¢¡¼¥­¥Æ¥¯
+     ¥Á¥ã¤Ç¤ÏSetup¤Î1¹ÔÌܤΡÖoption nodynamic¡×¤È¤¤¤¦¹Ô¤Î¥³
+     ¥á¥ó¥È¤ò³°¤¹É¬Íפ¬¤¢¤ê¤Þ¤¹¡¥¤Þ¤¿¡¤¤³¤Î¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤Ç
+     ³ÈÄ¥¥â¥¸¥å¡¼¥ë¤òÍøÍѤ¹¤ë¤¿¤á¤Ë¤Ï¡¤¤¢¤é¤«¤¸¤áÀÅŪ¤Ë¥ê¥ó
+     ¥¯¤·¤Æ¤ª¤¯É¬Íפ¬¤¢¤ê¤Þ¤¹¡¥
+
+  4. make¤ò¼Â¹Ô¤·¤Æ¥³¥ó¥Ñ¥¤¥ë¤¹¤ë
+
+  5. make test¤Ç¥Æ¥¹¥È¤ò¹Ô¤¦¡¥
+
+     ¡Ötest succeeded¡×¤Èɽ¼¨¤µ¤ì¤ì¤ÐÀ®¸ù¤Ç¤¹¡¥¤¿¤À¤·¥Æ¥¹¥È
+     ¤ËÀ®¸ù¤·¤Æ¤â´°àú¤À¤ÈÊݾڤµ¤ì¤Æ¤¤¤ëÌõ¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡¥
+
+  6. make install
+
+¤â¤·¡¤¥³¥ó¥Ñ¥¤¥ë»þ¤Ë¥¨¥é¡¼¤¬È¯À¸¤·¤¿¾ì¹ç¤Ë¤Ï¥¨¥é¡¼¤Î¥í¥°¤È¥Þ
+¥·¥ó¡¤OS¤Î¼ïÎà¤ò´Þ¤à¤Ç¤­¤ë¤À¤±¾Ü¤·¤¤¥ì¥Ý¡¼¥È¤òºî¼Ô¤ËÁ÷¤Ã¤Æ¤¯
+¤À¤µ¤ë¤È¾¤ÎÊý¤Î¤¿¤á¤Ë¤â¤Ê¤ê¤Þ¤¹¡¥
+
+
+* °Ü¿¢
+
+UNIX¤Ç¤¢¤ì¤Ðconfigure¤¬¤Û¤È¤ó¤É¤Îº¹°Û¤òµÛ¼ý¤·¤Æ¤¯¤ì¤ë¤Ï¤º¤Ç
+¤¹¤¬¡¤»×¤ï¤Ì¸«Íî¤È¤·¤¬¤¢¤Ã¤¿¾ì¹ç(¤¢¤ë¤Ë°ã¤¤¤Ê¤¤)¡¤ºî¼Ô¤Ë¤½¤Î
+¤³¤È¤ò¥ì¥Ý¡¼¥È¤¹¤ì¤Ð¡¤²ò·è¤Ç¤­¤ë¤«¤âÃΤì¤Þ¤»¤ó¡¥
+
+¥¢¡¼¥¯¥Æ¥¯¥Á¥ã¤Ë¤â¤Ã¤È¤â°Í¸¤¹¤ë¤Î¤ÏGCÉô¤Ç¤¹¡¥Ruby¤ÎGC¤ÏÂоÝ
+¤Î¥¢¡¼¥­¥Æ¥¯¥Á¥ã¤¬setjmp()¤Ë¤è¤Ã¤ÆÁ´¤Æ¤Î¥ì¥¸¥¹¥¿¤ò jmp_buf¤Ë
+³ÊǼ¤¹¤ë¤³¤È¤È¡¤jmp_buf¤È¥¹¥¿¥Ã¥¯¤¬32bit¥¢¥é¥¤¥ó¥á¥ó¥È¤µ¤ì¤Æ
+¤¤¤ë¤³¤È¤ò²¾Äꤷ¤Æ¤¤¤Þ¤¹¡¥ÆäËÁ°¼Ô¤¬À®Î©¤·¤Ê¤¤¾ì¹ç¤ÎÂбþ¤ÏÈó
+¾ï¤Ëº¤Æñ¤Ç¤·¤ç¤¦¡¥¸å¼Ô¤Î²ò·è¤ÏÈæ³ÓŪ´Êñ¤Ç¡¤gc.c¤Ç¥¹¥¿¥Ã¥¯¤ò
+¥Þ¡¼¥¯¤·¤Æ¤¤¤ëÉôʬ¤Ë¥¢¥é¥¤¥ó¥á¥ó¥È¤Î¥Ð¥¤¥È¿ô¤À¤±¤º¤é¤·¤Æ¥Þ¡¼
+¥¯¤¹¤ë¥³¡¼¥É¤òÄɲ乤ë¤À¤±¤ÇºÑ¤ß¤Þ¤¹¡¥¡Ödefined(THINK_C)¡×¤Ç
+³ç¤é¤ì¤Æ¤¤¤ëÉôʬ¤ò»²¹Í¤Ë¤·¤Æ¤¯¤À¤µ¤¤
+
+# ¼ÂºÝ¤Ë¤ÏRuby¤ÏThink C¤Ç¤Ï¥³¥ó¥Ñ¥¤¥ë¤Ç¤­¤Þ¤»¤ó¡¥
+
+¥ì¥¸¥¹¥¿¥¦¥£¥ó¥É¥¦¤ò»ý¤ÄCPU¤Ç¤Ï¡¤¥ì¥¸¥¹¥¿¥¦¥£¥ó¥É¥¦¤ò¥¹¥¿¥Ã
+¥¯¤Ë¥Õ¥é¥Ã¥·¥å¤¹¤ë¥¢¥»¥ó¥Ö¥é¥³¡¼¥É¤òÄɲ乤ëɬÍפ¬¤¢¤ë¤«¤âÃÎ
+¤ì¤Þ¤»¤ó¡¥
+
+
+* ÇÛÉÛ¾ò·ï
+
+RUby¤Ï¥Õ¥ê¡¼¥½¥Õ¥È¥¦¥§¥¢¤Ç¤¹¡¥GPL(the GNU General Public
+Licence)¤Þ¤¿¤Ï°Ê²¼¤Ë¼¨¤¹¾ò·ï¤ÇRuby¤òºÆÇÛÉۤǤ­¤Þ¤¹¡¥GPL¤Ë¤Ä
+¤¤¤Æ¤ÏCOPYING¥Õ¥¡¥¤¥ë¤ò»²¾È¤·¤Æ²¼¤µ¤¤¡¥
+
+  1. Ê£À½¤ÏÀ©¸Â¤Ê¤¯¼«Í³¤Ç¤¹¡¥
+
+  2. °Ê²¼¤Î¾ò·ï¤Î¤¤¤º¤ì¤«¤òËþ¤¿¤¹»þ¤Ë¼ê¸µ¤ÎRuby¤Î¥½¡¼¥¹¤ò¼«
+     ͳ¤ËÊѹ¹¤Ç¤­¤Þ¤¹¡¥
+
+     (a) ¥Í¥Ã¥È¥Ë¥å¡¼¥º¤Ë¥Ý¥¹¥È¤·¤¿¤ê¡¤ºî¼Ô¤ËÊѹ¹¤òÁ÷ÉÕ¤¹¤ë
+         ¤Ê¤É¤ÎÊýË¡¤Ç¡¤Êѹ¹¤ò¸ø³«¤¹¤ë
+
+     (b) Êѹ¹¤·¤¿Ruby¤ò¼«Ê¬¤Î½ê°¤¹¤ëÁÈ¿¥ÆâÉô¤À¤±¤Ç»È¤¦
+
+     (c) Êѹ¹ÅÀ¤òÌÀ¼¨¤·¤¿¤¦¤¨¡¤¥½¥Õ¥È¥¦¥§¥¢¤Î̾Á°¤òÊѹ¹¤¹¤ë¡¥
+         ¤½¤Î¥½¥Õ¥È¥¦¥§¥¢¤òÇÛÉÛ¤¹¤ë»þ¤Ë¤Ï¤â¤È¤ÎRuby¤âƱ»þ¤Ë
+         ÇÛÉÛ¤¹¤ë
+
+     (d) ¤½¤Î¾¤ÎÊѹ¹¾ò·ï¤òºî¼Ô¤È¹ç°Õ¤¹¤ë
+
+  3. °Ê²¼¤Î¾ò·ï¤Î¤¤¤º¤ì¤«¤òËþ¤¿¤¹»þ¤ËRuby¤ò¥ª¥Ö¥¸¥§¥¯¥È¥³¡¼
+     ¥É¤ä¼Â¹Ô·Á¼°¤Ç¤âÇÛÉۤǤ­¤Þ¤¹¡¥
+
+     (a) ¥Ð¥¤¥Ê¥ê¤ò¼õ¤±¼è¤Ã¤¿¿Í¤¬¥½¡¼¥¹¤òÆþ¼ê¤Ç¤­¤ë¤è¤¦¤Ë¥½¡¼
+	 ¥¹¤ÎÆþ¼êË¡¤òÌÀ¼¨¤¹¤ë
+
+     (b) µ¡³£²ÄÆɤʥ½¡¼¥¹¥³¡¼¥É¤òźÉÕ¤¹¤ë
+
+     (c) Êѹ¹¤ò¹Ô¤Ã¤¿¥Ð¥¤¥Ê¥ê¤Ï̾Á°¤òÊѹ¹¤·¤¿¤¦¤¨¡¤¥½¡¼¥¹¤Î
+         Æþ¼êË¡¤òÌÀ¼¨¤¹¤ë
+
+     (d) ¤½¤Î¾¤ÎÇÛÉÛ¾ò·ï¤òºî¼Ô¤È¹ç°Õ¤¹¤ë
+
+  4. ¾¤Î¥×¥í¥°¥é¥à¤Ø¤Î°úÍѤϤ¤¤«¤Ê¤ëÌÜŪ¤Ç¤¢¤ì¼«Í³¤Ç¤¹¡¥¤¿
+     ¤À¤·¡¤Ruby¤Ë´Þ¤Þ¤ì¤ë¾¤Îºî¼Ô¤Ë¤è¤ë¥³¡¼¥É¤Ï¡¤¤½¤ì¤¾¤ì¤Î
+     ºî¼Ô¤Î°Õ¸þ¤Ë¤è¤ëÀ©¸Â¤¬²Ã¤¨¤é¤ì¤Þ¤¹¡¥¶ñÂÎŪ¤Ë¤Ïgc.c(°ìÉô)¡¤
+     util.c(°ìÉô)¡¤st.[ch]¡¤regex.[ch], fnmatch.[ch], glob.c 
+     ¤ª¤è¤Ó./missing¥Ç¥£¥ì¥¯¥È¥ê²¼¤Î¥Õ¥¡¥¤¥ë·²¤¬³ºÅö¤·¤Þ¤¹¡¥
+
+  5. Ruby¤Ø¤ÎÆþÎϤȤʤ륹¥¯¥ê¥×¥È¤ª¤è¤Ó¡¤Ruby¤«¤é¤Î½ÐÎϤθ¢
+     Íø¤ÏRuby¤Îºî¼Ô¤Ç¤Ï¤Ê¤¯¡¤¤½¤ì¤¾¤ì¤ÎÆþ½ÐÎϤòÀ¸À®¤·¤¿¿Í¤Ë
+     °¤·¤Þ¤¹¡¥¤Þ¤¿¡¤Ruby¤ËÁȤ߹þ¤à¤¿¤á¤Î³ÈÄ¥¥â¥¸¥å¡¼¥ë¤Ë¤Ä
+     ¤¤¤Æ¤âƱÍͤǤ¹¡¥
+
+  6. Ruby¤Ï̵ÊݾڤǤ¹¡¥ºî¼Ô¤ÏRuby¤ò¥µ¥Ý¡¼¥È¤¹¤ë°Õ»Ö¤Ï¤¢¤ê¤Þ
+     ¤¹¤¬¡¤Ruby¼«¿È¤Î¥Ð¥°¤¢¤ë¤¤¤ÏRuby¥¹¥¯¥ê¥×¥È¤Î¥Ð¥°¤Ê¤É¤«
+     ¤éȯÀ¸¤¹¤ë¤¤¤«¤Ê¤ë»³²¤ËÂФ·¤Æ¤âÀÕǤ¤ò»ý¤Á¤Þ¤»¤ó¡¥
+
+
+* Ãø¼Ô
+
+¥³¥á¥ó¥È¡¤¥Ð¥°¥ì¥Ý¡¼¥È¤½¤Î¾¤Ï matz@netlab.co.jp ¤Þ¤Ç¡¥
+-------------------------------------------------------
+created at: Thu Aug  3 11:57:36 JST 1995
+Local variables:
+mode: indented-text
+end:
diff --git a/README.md b/README.md
deleted file mode 100644
index f06bf1d3ea..0000000000
--- a/README.md
+++ /dev/null
@@ -1,171 +0,0 @@
-[![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, Haiku, etc.) cf.
-    https://github.com/ruby/ruby/blob/master/doc/contributing.rdoc#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 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](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.  If `./configure` does not exist or is older than `configure.ac`, run
-    `autoconf` to (re)generate configure.
-
-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
new file mode 100644
index 0000000000..9710c42302
--- /dev/null
+++ b/ToDo
@@ -0,0 +1,3 @@
+* non-blocking open/write for thread
+* package or access control for global variables
+* format
diff --git a/aclocal.m4 b/aclocal.m4
deleted file mode 100644
index 940d91e83f..0000000000
--- a/aclocal.m4
+++ /dev/null
@@ -1,48 +0,0 @@
-# generated automatically by aclocal 1.16.2 -*- Autoconf -*-
-
-# 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.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
-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_type_attribute.m4])
-m4_include([tool/m4/ruby_universal_arch.m4])
-m4_include([tool/m4/ruby_werror_flag.m4])
diff --git a/addr2line.c b/addr2line.c
deleted file mode 100644
index bf6bc6dc24..0000000000
--- a/addr2line.c
+++ /dev/null
@@ -1,2659 +0,0 @@
-/**********************************************************************
-
-  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 = *(unsigned char *)p++;
-	    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
-static void
-follow_debuglink(const char *debuglink, int num_traces, void **traces,
-		 obj_info_t **objp, line_info_t *lines, int offset)
-{
-    /* Ideally we should check 4 paths to follow gnu_debuglink,
-       but we handle only one case for now as this format is used
-       by some linux distributions. See GDB's info for detail. */
-    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);
-}
-#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;
-}
-
-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)
-{
-#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);
-#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;
-    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_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);
-	}
-	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__)
-static ssize_t
-main_exe_path(void)
-{
-# define PROC_SELF_EXE "/proc/self/exe"
-    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
deleted file mode 100644
index f09b665800..0000000000
--- a/addr2line.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#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
deleted file mode 100644
index 75452e29ea..0000000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,95 +0,0 @@
----
-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: "1.2.11"
-  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
-    - curl -fsSL -o zlib%zlib_version:.=%.zip --retry 10 https://zlib.net/zlib%zlib_version:.=%.zip
-    - 7z x -o%APPVEYOR_BUILD_FOLDER%\ext\zlib zlib%zlib_version:.=%.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 0373c1e374..651a2cbee4 100644
--- a/array.c
+++ b/array.c
@@ -1,8073 +1,1364 @@
-/**********************************************************************
+/************************************************
 
   array.c -
 
   $Author$
+  $Date$
   created at: Fri Aug  6 09:46:12 JST 1993
 
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
-  Copyright (C) 2000  Network Applied Communication Laboratory, Inc.
-  Copyright (C) 2000  Information-technology Promotion Agency, Japan
-
-**********************************************************************/
-
-#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"
-
-#if !ARRAY_DEBUG
-# undef NDEBUG
-# define NDEBUG
-#endif
-#include "ruby_assert.h"
-
-VALUE rb_cArray;
-
-/* for OPTIMIZED_CMP: */
-#define id_cmp idCmp
+  Copyright (C) 1993-1998 Yukihiro Matsumoto
 
-#define ARY_DEFAULT_SIZE 16
-#define ARY_MAX_SIZE (LONG_MAX / (int)sizeof(VALUE))
-#define SMALL_ARRAY_LEN 16
-
-RBIMPL_ATTR_MAYBE_UNUSED()
-static int
-should_be_T_ARRAY(VALUE ary)
-{
-    return RB_TYPE_P(ary, T_ARRAY);
-}
-
-RBIMPL_ATTR_MAYBE_UNUSED()
-static int
-should_not_be_shared_and_embedded(VALUE ary)
-{
-    return !FL_TEST((ary), ELTS_SHARED) || !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 FL_SET_EMBED(a) do { \
-    assert(!ARY_SHARED_P(a)); \
-    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_SET_SHARED(ary) do { \
-    assert(!ARY_EMBED_P(ary)); \
-    FL_SET((ary), ELTS_SHARED); \
-} while (0)
-#define FL_UNSET_SHARED(ary) FL_UNSET((ary), ELTS_SHARED)
-
-#define ARY_SET_PTR(ary, p) do { \
-    assert(!ARY_EMBED_P(ary)); \
-    assert(!OBJ_FROZEN(ary)); \
-    RARRAY(ary)->as.heap.ptr = (p); \
-} while (0)
-#define ARY_SET_EMBED_LEN(ary, n) do { \
-    long tmp_n = (n); \
-    assert(ARY_EMBED_P(ary)); \
-    assert(!OBJ_FROZEN(ary)); \
-    RBASIC(ary)->flags &= ~RARRAY_EMBED_LEN_MASK; \
-    RBASIC(ary)->flags |= (tmp_n) << RARRAY_EMBED_LEN_SHIFT; \
-} while (0)
-#define ARY_SET_HEAP_LEN(ary, n) do { \
-    assert(!ARY_EMBED_P(ary)); \
-    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)); \
-    } \
-    else { \
-        ARY_SET_HEAP_LEN((ary), (n)); \
-    } \
-    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); \
-} 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)); \
-    } \
-    else { \
-        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) : ARY_HEAP_CAPA(ary))
-#define ARY_SET_CAPA(ary, n) do { \
-    assert(!ARY_EMBED_P(ary)); \
-    assert(!ARY_SHARED_P(ary)); \
-    assert(!OBJ_FROZEN(ary)); \
-    RARRAY(ary)->as.heap.aux.capa = (n); \
-} while (0)
-
-#define ARY_SHARED_ROOT(ary) (assert(ARY_SHARED_P(ary)), RARRAY(ary)->as.heap.aux.shared_root)
-#define ARY_SET_SHARED(ary, value) do { \
-    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) (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_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)); \
-    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;
-}
+#include "ruby.h"
 
-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);
-}
+VALUE cArray;
 
-void
-rb_ary_ptr_use_end(VALUE ary)
-{
-#if ARRAY_DEBUG
-    FL_UNSET_RAW(ary, RARRAY_PTR_IN_USE_FLAG);
-#endif
-}
+#define ARY_DEFAULT_SIZE 16
 
 void
-rb_mem_clear(VALUE *mem, long size)
+memclear(mem, size)
+    register VALUE *mem;
+    register int 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));
-
-    if (capacity > RARRAY_EMBED_LEN_MAX) {
-        if (ARY_EMBED_P(ary)) {
-            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 {
-            ary_heap_realloc(ary, capacity);
-        }
-        ARY_SET_CAPA(ary, capacity);
-    }
-    else {
-        if (!ARY_EMBED_P(ary)) {
-            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_root)
-{
-    if (shared_root) {
-        long num = ARY_SHARED_ROOT_REFCNT(shared_root) - 1;
-	if (num == 0) {
-            rb_ary_free(shared_root);
-            rb_gc_force_recycle(shared_root);
-	}
-	else if (num > 0) {
-            ARY_SET_SHARED_ROOT_REFCNT(shared_root, num);
-	}
-    }
-}
+#define ARY_FREEZE   FL_USER1
 
 static void
-rb_ary_unshare(VALUE ary)
-{
-    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)
-{
-    if (ARY_SHARED_P(ary) && !ARY_EMBED_P(ary)) {
-	rb_ary_unshare(ary);
-    }
-}
-
-static VALUE
-rb_ary_increment_share(VALUE shared_root)
+ary_modify(ary)
+    VALUE ary;
 {
-    long num = ARY_SHARED_ROOT_REFCNT(shared_root);
-    if (num >= 0) {
-        ARY_SET_SHARED_ROOT_REFCNT(shared_root, num + 1);
+    rb_secure(5);
+    if (FL_TEST(ary, ARY_FREEZE)) {
+	TypeError("can't modify frozen array");
     }
-    return shared_root;
-}
-
-static void
-rb_ary_set_shared(VALUE ary, VALUE shared_root)
-{
-    rb_ary_increment_share(shared_root);
-    FL_SET_SHARED(ary);
-    RB_DEBUG_COUNTER_INC(obj_ary_shared_create);
-    ARY_SET_SHARED(ary, shared_root);
-}
-
-static inline void
-rb_ary_modify_check(VALUE ary)
-{
-    rb_check_frozen(ary);
-    ary_verify(ary);
 }
 
-void
-rb_ary_modify(VALUE ary)
+VALUE
+ary_freeze(ary)
+    VALUE ary;
 {
-    rb_ary_modify_check(ary);
-    if (ARY_SHARED_P(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) {
-	    const VALUE *ptr = ARY_HEAP_PTR(ary);
-            FL_UNSET_SHARED(ary);
-            FL_SET_EMBED(ary);
-	    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 = 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);
+    FL_SET(ary, ARY_FREEZE);
+    return ary;
 }
 
 static VALUE
-ary_ensure_room_for_push(VALUE ary, long add_len)
+ary_frozen_p(ary)
+    VALUE ary;
 {
-    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;
+    if (FL_TEST(ary, ARY_FREEZE))
+	return TRUE;
+    return FALSE;
 }
 
-/*
- *  call-seq:
- *    array.freeze -> self
- *
- *  Freezes +self+; returns +self+:
- *    a = []
- *    a.frozen? # => false
- *    a.freeze
- *    a.frozen? # => true
- *
- *  An attempt to modify a frozen \Array raises FrozenError.
- */
-
 VALUE
-rb_ary_freeze(VALUE ary)
+ary_new2(len)
+    int len;
 {
-    return rb_obj_freeze(ary);
-}
+    NEWOBJ(ary, struct RArray);
+    OBJSETUP(ary, cArray, T_ARRAY);
 
-/* 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 (!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;
+    ary->len = 0;
+    ary->capa = len;
+    if (len == 0)
+	ary->ptr = 0;
+    else {
+	ary->ptr = ALLOC_N(VALUE, len);
+	memclear(ary->ptr, len);
     }
-    return Qfalse;
-}
 
-static VALUE
-ary_alloc(VALUE klass)
-{
-    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
-empty_ary_alloc(VALUE klass)
-{
-    RUBY_DTRACE_CREATE_HOOK(ARRAY, 0);
-    return ary_alloc(klass);
-}
-
-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 (capa > ARY_MAX_SIZE) {
-	rb_raise(rb_eArgError, "array size too big");
-    }
-
-    RUBY_DTRACE_CREATE_HOOK(ARRAY, capa);
-
-    ary = ary_alloc(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_new_capa(long capa)
+ary_new()
 {
-    return ary_new(rb_cArray, capa);
+    return ary_new2(ARY_DEFAULT_SIZE);
 }
 
-VALUE
-rb_ary_new(void)
-{
-    return rb_ary_new2(RARRAY_EMBED_LEN_MAX);
-}
+#include <varargs.h>
 
 VALUE
-(rb_ary_new_from_args)(long n, ...)
+ary_new3(n, va_alist)
+    int n;
+    va_dcl
 {
     va_list ar;
     VALUE ary;
-    long i;
+    int i;
 
-    ary = rb_ary_new2(n);
+    if (n < 0) {
+	IndexError("Negative number of items(%d)", n);
+    }
+    ary = ary_new2(n<ARY_DEFAULT_SIZE?ARY_DEFAULT_SIZE:n);
 
-    va_start(ar, n);
+    va_start(ar);
     for (i=0; i<n; i++) {
-	ARY_SET(ary, i, va_arg(ar, VALUE));
+	RARRAY(ary)->ptr[i] = va_arg(ar, VALUE);
     }
     va_end(ar);
 
-    ARY_SET_LEN(ary, n);
+    RARRAY(ary)->len = n;
     return ary;
 }
 
-MJIT_FUNC_EXPORTED VALUE
-rb_ary_tmp_new_from_values(VALUE klass, long n, const VALUE *elts)
+VALUE
+ary_new4(n, elts)
+    int n;
+    VALUE *elts;
 {
     VALUE ary;
 
-    ary = ary_new(klass, n);
-    if (n > 0 && elts) {
-	ary_memcpy(ary, 0, n, elts);
-	ARY_SET_LEN(ary, n);
+    ary = ary_new2(n);
+    if (elts) {
+	MEMCPY(RARRAY(ary)->ptr, elts, VALUE, n);
     }
+    else {
+	memclear(RARRAY(ary)->ptr, n);
+    }
+    RARRAY(ary)->len = n;
 
     return ary;
 }
 
 VALUE
-rb_ary_new_from_values(long n, const VALUE *elts)
+assoc_new(car, cdr)
+    VALUE car, cdr;
 {
-    return rb_ary_tmp_new_from_values(rb_cArray, n, elts);
-}
+    VALUE ary;
 
-VALUE
-rb_ary_tmp_new(long capa)
-{
-    VALUE ary = ary_new(0, capa);
-    rb_ary_transient_heap_evacuate(ary, TRUE);
-    return ary;
-}
+    ary = ary_new2(2);
+    RARRAY(ary)->ptr[0] = car;
+    RARRAY(ary)->ptr[1] = cdr;
+    RARRAY(ary)->len = 2;
 
-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)) {
-        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_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 {
-	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);
-        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)
-{
-    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 {
-        return rb_ary_increment_share(ary_make_shared(ary));
-    }
-}
-
-VALUE
-rb_assoc_new(VALUE car, VALUE cdr)
-{
-    return rb_ary_new3(2, car, cdr);
-}
-
-VALUE
-rb_to_array_type(VALUE 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_with_id(ary, T_ARRAY, "Array", idTo_ary);
-}
-
-MJIT_FUNC_EXPORTED VALUE
-rb_check_to_array(VALUE ary)
+ary_s_new(argc, argv, klass)
+    int argc;
+    VALUE *argv;
+    VALUE klass;
 {
-    return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_a);
-}
+    VALUE size;
+    NEWOBJ(ary, struct RArray);
+    OBJSETUP(ary, klass, T_ARRAY);
 
-/*
- *  call-seq:
- *    Array.try_convert(object) -> object, new_array, or nil
- *
- *  If +object+ is an \Array object, returns +object+.
- *
- *  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.
- */
+    rb_scan_args(argc, argv, "01", &size);
+    ary->len = 0;
+    ary->capa = NIL_P(size)?ARY_DEFAULT_SIZE:NUM2INT(size);
+    ary->ptr = ALLOC_N(VALUE, ary->capa);
+    memclear(ary->ptr, ary->capa);
+    obj_call_init((VALUE)ary);
 
-static VALUE
-rb_ary_s_try_convert(VALUE dummy, VALUE ary)
-{
-    return rb_check_array_type(ary);
+    return (VALUE)ary;
 }
 
-/*
- *  call-seq:
- *    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
-rb_ary_initialize(int argc, VALUE *argv, VALUE ary)
+ary_s_create(argc, argv, klass)
+    int argc;
+    VALUE *argv;
+    VALUE klass;
 {
-    long len;
-    VALUE size, val;
+    NEWOBJ(ary, struct RArray);
+    OBJSETUP(ary, klass, T_ARRAY);
 
-    rb_ary_modify(ary);
+    ary->len = argc;
+    ary->capa = argc;
     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);
-	ARY_SET_EMBED_LEN(ary, 0);
-	if (rb_block_given_p()) {
-	    rb_warning("given block not used");
-	}
-	return ary;
-    }
-    rb_scan_args(argc, argv, "02", &size, &val);
-    if (argc == 1 && !FIXNUM_P(size)) {
-	val = rb_check_array_type(size);
-	if (!NIL_P(val)) {
-	    rb_ary_replace(ary, val);
-	    return 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()) {
-	long i;
-
-	if (argc == 2) {
-	    rb_warn("block supersedes default value argument");
-	}
-	for (i=0; i<len; i++) {
-	    rb_ary_store(ary, i, rb_yield(LONG2NUM(i)));
-	    ARY_SET_LEN(ary, i + 1);
-	}
+	ary->ptr = 0;
     }
     else {
-	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/)  # => [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) {
-        ary_memcpy(ary, 0, argc, argv);
-        ARY_SET_LEN(ary, argc);
+	ary->ptr = ALLOC_N(VALUE, argc);
+	MEMCPY(ary->ptr, argv, VALUE, argc);
     }
 
-    return ary;
+    return (VALUE)ary;
 }
 
 void
-rb_ary_store(VALUE ary, long idx, VALUE val)
+ary_store(ary, idx, val)
+    VALUE ary;
+    int idx;
+    VALUE val;
 {
-    long len = RARRAY_LEN(ary);
-
+    ary_modify(ary);
     if (idx < 0) {
-	idx += len;
-	if (idx < 0) {
-	    rb_raise(rb_eIndexError, "index %ld too small for array; minimum: %ld",
-		     idx - len, -len);
-	}
-    }
-    else if (idx >= ARY_MAX_SIZE) {
-	rb_raise(rb_eIndexError, "index %ld too big", idx);
-    }
-
-    rb_ary_modify(ary);
-    if (idx >= ARY_CAPA(ary)) {
-	ary_double_capa(ary, idx);
-    }
-    if (idx > len) {
-	ary_mem_clear(ary, len, idx - len + 1);
+	IndexError("negative index for array");
     }
 
-    if (idx >= len) {
-	ARY_SET_LEN(ary, idx + 1);
+    if (idx >= RARRAY(ary)->capa) {
+	RARRAY(ary)->capa = idx + ARY_DEFAULT_SIZE;
+	REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
     }
-    ARY_SET(ary, idx, val);
-}
-
-static VALUE
-ary_make_partial(VALUE ary, VALUE klass, long offset, long len)
-{
-    assert(offset >= 0);
-    assert(len >= 0);
-    assert(offset+len <= RARRAY_LEN(ary));
-
-    if (len <= RARRAY_EMBED_LEN_MAX) {
-        VALUE result = ary_alloc(klass);
-        ary_memcpy(result, 0, len, RARRAY_CONST_PTR_TRANSIENT(ary) + offset);
-        ARY_SET_EMBED_LEN(result, len);
-        return result;
+    if (idx > RARRAY(ary)->len) {
+	memclear(RARRAY(ary)->ptr+RARRAY(ary)->len, idx-RARRAY(ary)->len+1);
     }
-    else {
-        VALUE shared, result = ary_alloc(klass);
-        FL_UNSET_EMBED(result);
-
-        shared = ary_make_shared(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;
+    if (idx >= RARRAY(ary)->len) {
+	RARRAY(ary)->len = idx + 1;
     }
+    RARRAY(ary)->ptr[idx] = val;
 }
 
-static VALUE
-ary_make_shared_copy(VALUE ary)
+VALUE
+ary_push(ary, item)
+    VALUE ary;
+    VALUE item;
 {
-    return ary_make_partial(ary, rb_obj_class(ary), 0, RARRAY_LEN(ary));
+    ary_store(ary, RARRAY(ary)->len, item);
+    return ary;
 }
 
-enum ary_take_pos_flags
-{
-    ARY_TAKE_FIRST = 0,
-    ARY_TAKE_LAST = 1
-};
-
 static VALUE
-ary_take_first_or_last(int argc, const VALUE *argv, VALUE ary, enum ary_take_pos_flags last)
+ary_push_method(argc, argv, ary)
+    int argc;
+    VALUE *argv;
+    VALUE ary;
 {
-    long n;
-    long len;
-    long offset = 0;
-
-    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;
+    while (argc--) {
+	ary_store(ary, RARRAY(ary)->len, *argv++);
     }
-    else if (n < 0) {
-	rb_raise(rb_eArgError, "negative array size");
-    }
-    if (last) {
-	offset = len - n;
-    }
-    return ary_make_partial(ary, rb_cArray, offset, n);
-}
-
-/*
- *  call-seq:
- *    array << object -> self
- *
- *  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)
-{
-    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(*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.
- *
- *  Related: #pop, #shift, #unshift.
- */
-
-static VALUE
-rb_ary_push_m(int argc, VALUE *argv, VALUE ary)
+ary_pop(ary)
+    VALUE ary;
 {
-    return rb_ary_cat(ary, argv, argc);
+    if (RARRAY(ary)->len == 0) return Qnil;
+    if (RARRAY(ary)->len * 10 < RARRAY(ary)->capa && RARRAY(ary)->capa > ARY_DEFAULT_SIZE) {
+	RARRAY(ary)->capa = RARRAY(ary)->len * 2;
+	REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
+    }
+    return RARRAY(ary)->ptr[--RARRAY(ary)->len];
 }
 
 VALUE
-rb_ary_pop(VALUE ary)
+ary_shift(ary)
+    VALUE ary;
 {
-    long n;
-    rb_ary_modify_check(ary);
-    n = RARRAY_LEN(ary);
-    if (n == 0) return Qnil;
-    if (ARY_OWNS_HEAP_P(ary) &&
-	n * 3 < ARY_CAPA(ary) &&
-	ARY_CAPA(ary) > ARY_DEFAULT_SIZE)
-    {
-	ary_resize_capa(ary, n * 2);
-    }
-    --n;
-    ARY_SET_LEN(ary, n);
-    ary_verify(ary);
-    return RARRAY_AREF(ary, n);
-}
+    VALUE top;
 
-/*
- *  call-seq:
- *    array.pop -> object or nil
- *    array.pop(n) -> new_array
- *
- *  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.
- */
+    if (RARRAY(ary)->len == 0) return Qnil;
 
-static VALUE
-rb_ary_pop_m(int argc, VALUE *argv, VALUE ary)
-{
-    VALUE result;
+    top = RARRAY(ary)->ptr[0];
+    RARRAY(ary)->len--;
 
-    if (argc == 0) {
-	return rb_ary_pop(ary);
+    /* sliding items */
+    MEMMOVE(RARRAY(ary)->ptr, RARRAY(ary)->ptr+1, VALUE, RARRAY(ary)->len);
+    if (RARRAY(ary)->len * 10 < RARRAY(ary)->capa && RARRAY(ary)->capa > ARY_DEFAULT_SIZE) {
+	RARRAY(ary)->capa = RARRAY(ary)->len * 2;
+	REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
     }
 
-    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;
+    return top;
 }
 
 VALUE
-rb_ary_shift(VALUE ary)
+ary_unshift(ary, item)
+    VALUE ary, item;
 {
-    VALUE top;
-    long len = RARRAY_LEN(ary);
-
-    rb_ary_modify_check(ary);
-    if (len == 0) return Qnil;
-    top = RARRAY_AREF(ary, 0);
-    if (!ARY_SHARED_P(ary)) {
-	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 */
-
-	ARY_SET(ary, 0, Qnil);
-	ary_make_shared(ary);
+    ary_modify(ary);
+    if (RARRAY(ary)->len >= RARRAY(ary)->capa) {
+	RARRAY(ary)->capa+=ARY_DEFAULT_SIZE;
+	REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
     }
-    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);
+    /* sliding items */
+    MEMMOVE(RARRAY(ary)->ptr+1, RARRAY(ary)->ptr, VALUE, RARRAY(ary)->len);
 
-    return top;
+    RARRAY(ary)->len++;
+    return RARRAY(ary)->ptr[0] = item;
 }
 
-/*
- *  call-seq:
- *     array.shift -> object or nil
- *     array.shift(n) -> new_array
- *
- *  Removes and returns leading elements.
- *
- *  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
-rb_ary_shift_m(int argc, VALUE *argv, VALUE ary)
+VALUE
+ary_entry(ary, offset)
+    VALUE ary;
+    int offset;
 {
-    VALUE result;
-    long n;
+    if (RARRAY(ary)->len == 0) return Qnil;
 
-    if (argc == 0) {
-	return rb_ary_shift(ary);
+    if (offset < 0) {
+	offset = RARRAY(ary)->len + offset;
     }
-
-    rb_ary_modify_check(ary);
-    result = ary_take_first_or_last(argc, argv, ary, ARY_TAKE_FIRST);
-    n = RARRAY_LEN(result);
-    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);
+    if (offset < 0 || RARRAY(ary)->len <= offset) {
+	return Qnil;
     }
-    ARY_INCREASE_PTR(ary, n);
-    ARY_INCREASE_LEN(ary, -n);
-    ary_verify(ary);
-    return ary;
+
+    return RARRAY(ary)->ptr[offset];
 }
 
 static VALUE
-behead_transient(VALUE ary, long n)
+ary_subseq(ary, beg, len)
+    VALUE ary;
+    int beg, len;
 {
-    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;
-}
+    VALUE ary2;
 
-MJIT_FUNC_EXPORTED VALUE
-rb_ary_behead(VALUE ary, long n)
-{
-    if (n <= 0) {
-        return ary;
+    if (beg < 0) {
+	beg = RARRAY(ary)->len + beg;
+	if (beg < 0) beg = 0;
     }
-    else if (ARY_SHARED_P(ary)) {
-        return behead_shared(ary, n);
+    if (len < 0) {
+	IndexError("negative length %d", RARRAY(ary)->len);
     }
-    else if (RARRAY_LEN(ary) >= ARY_DEFAULT_SIZE) {
-        ary_make_shared(ary);
-        return behead_shared(ary, n);
+    if (len == 0) {
+	return ary_new2(0);
     }
-    else {
-        return behead_transient(ary, n);
+    if (beg + len > RARRAY(ary)->len) {
+	len = RARRAY(ary)->len - beg;
     }
-}
-
-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;
+    if (len < 0) {
+	len = 0;
     }
-    ARY_SET_PTR(ary, head - argc);
-    assert(ARY_SHARED_ROOT_OCCUPIED(ARY_SHARED_ROOT(ary)));
 
-    ary_verify(ary);
-    return ARY_SHARED_ROOT(ary);
+    ary2 = ary_new2(len);
+    MEMCPY(RARRAY(ary2)->ptr, RARRAY(ary)->ptr+beg, VALUE, len);
+    RARRAY(ary2)->len = len;
+
+    return ary2;
 }
 
 static VALUE
-ary_modify_for_unshift(VALUE ary, int argc)
+beg_len(range, begp, lenp, len)
+    VALUE range;
+    int *begp, *lenp;
+    int len;
 {
-    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);
-    }
+    int beg, end;
 
-    /* use shared array for big "queues" */
-    if (new_len > ARY_DEFAULT_SIZE * 4) {
-        ary_verify(ary);
+    if (!range_beg_end(range, &beg, &end)) return FALSE;
 
-        /* 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;
+    if ((beg > 0 && end > 0 || beg < 0 && end < 0) && beg > end) {
+	IndexError("end smaller than beg [%d..%d]", beg, end);
     }
-}
 
-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);
+    if (beg < 0) {
+	beg = len + beg;
+	if (beg < 0) beg = 0;
     }
-    else if (! ARY_SHARED_P(ary)) {
-        return ary_modify_for_unshift(ary, argc);
+    *begp = beg;
+    if (beg > len) {
+	*lenp = 0;
     }
     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(*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 = RARRAY_LEN(ary);
-    VALUE target_ary;
-
-    if (argc == 0) {
-	rb_ary_modify_check(ary);
-	return ary;
-    }
-
-    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;
-}
-
-VALUE
-rb_ary_unshift(VALUE ary, VALUE item)
-{
-    return rb_ary_unshift_m(1,&item,ary);
-}
-
-/* faster version - use this if you don't need to treat negative offset */
-static inline VALUE
-rb_ary_elt(VALUE ary, long offset)
-{
-    long len = RARRAY_LEN(ary);
-    if (len == 0) return Qnil;
-    if (offset < 0 || len <= offset) {
-	return Qnil;
-    }
-    return RARRAY_AREF(ary, offset);
-}
-
-VALUE
-rb_ary_entry(VALUE ary, long offset)
-{
-    return rb_ary_entry_internal(ary, offset);
-}
-
-VALUE
-rb_ary_subseq(VALUE ary, long beg, long len)
-{
-    VALUE klass;
-    long alen = RARRAY_LEN(ary);
-
-    if (beg > alen) return Qnil;
-    if (beg < 0 || len < 0) return Qnil;
-
-    if (alen < len || alen < beg + len) {
-	len = alen - beg;
+	if (end < 0) {
+	    end = len + end;
+	    if (end < 0) end = -1;
+	}
+	if (beg > end) {
+	    *lenp = 0;
+	}
+	else {
+	    *lenp = end - beg +1;
+	}
     }
-    klass = rb_obj_class(ary);
-    if (len == 0) return ary_new(klass, 0);
-
-    return ary_make_partial(ary, klass, beg, len);
+    return TRUE;
 }
 
-static VALUE rb_ary_aref2(VALUE ary, VALUE b, VALUE e);
-
-/*
- *  call-seq:
- *    array[index] -> object or nil
- *    array[start, length] -> object or nil
- *    array[range] -> 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+.
- *
- *  Array#slice is an alias for Array#[].
- */
-
 VALUE
-rb_ary_aref(int argc, const VALUE *argv, VALUE ary)
+ary_aref(argc, argv, ary)
+    int argc;
+    VALUE *argv;
+    VALUE ary;
 {
-    rb_check_arity(argc, 1, 2);
-    if (argc == 2) {
-	return rb_ary_aref2(ary, argv[0], argv[1]);
-    }
-    return rb_ary_aref1(ary, argv[0]);
-}
+    VALUE arg1, arg2;
+    int beg, len;
 
-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);
+    if (rb_scan_args(argc, argv, "11", &arg1, &arg2) == 2) {
+	beg = NUM2INT(arg1);
+	len = NUM2INT(arg2);
+	if (len <= 0) {
+	    return ary_new();
+	}
+	return ary_subseq(ary, beg, len);
     }
-    return rb_ary_subseq(ary, beg, len);
-}
-
-MJIT_FUNC_EXPORTED VALUE
-rb_ary_aref1(VALUE ary, VALUE arg)
-{
-    long beg, len;
 
     /* 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)) {
-      case Qfalse:
-	break;
-      case Qnil:
-	return Qnil;
-      default:
-	return rb_ary_subseq(ary, beg, len);
-    }
-    return rb_ary_entry(ary, NUM2LONG(arg));
-}
-
-/*
- *  call-seq:
- *    array.at(index) -> object
- *
- *  Returns the element at \Integer offset +index+; does not modify +self+.
- *    a = [:foo, 'bar', 2]
- *    a.at(0) # => :foo
- *    a.at(2) # => 2
- */
-
-VALUE
-rb_ary_at(VALUE ary, VALUE pos)
-{
-    return rb_ary_entry(ary, NUM2LONG(pos));
-}
-
-/*
- *  call-seq:
- *    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_AREF(ary, 0);
+    if (FIXNUM_P(arg1)) {
+	return ary_entry(ary, FIX2INT(arg1));
     }
     else {
-	return ary_take_first_or_last(argc, argv, ary, ARY_TAKE_FIRST);
+	/* check if idx is Range */
+	if (beg_len(arg1, &beg, &len, RARRAY(ary)->len)) {
+	    return ary_subseq(ary, beg, len);
+	}
     }
-}
-
-/*
- *  call-seq:
- *    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, const VALUE *argv, VALUE ary)
-{
-    if (argc == 0) {
-	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);
+    if (TYPE(arg1) == T_BIGNUM) {
+	IndexError("index too big");
     }
+    return ary_entry(ary, NUM2INT(arg1));
 }
 
-/*
- *  call-seq:
- *    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
-rb_ary_fetch(int argc, VALUE *argv, VALUE ary)
+ary_index(ary, val)
+    VALUE ary;
+    VALUE val;
 {
-    VALUE pos, ifnone;
-    long block_given;
-    long idx;
-
-    rb_scan_args(argc, argv, "11", &pos, &ifnone);
-    block_given = rb_block_given_p();
-    if (block_given && argc == 2) {
-	rb_warn("block supersedes default value argument");
-    }
-    idx = NUM2LONG(pos);
+    int i;
 
-    if (idx < 0) {
-	idx +=  RARRAY_LEN(ary);
+    for (i=0; i<RARRAY(ary)->len; i++) {
+	if (rb_equal(RARRAY(ary)->ptr[i], val))
+	    return INT2FIX(i);
     }
-    if (idx < 0 || RARRAY_LEN(ary) <= idx) {
-	if (block_given) return rb_yield(pos);
-	if (argc == 1) {
-	    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_AREF(ary, idx);
+    return Qnil;
 }
 
-/*
- *  call-seq:
- *    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
- *
- *  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
-rb_ary_index(int argc, VALUE *argv, VALUE ary)
-{
+ary_rindex(ary, val)
+    VALUE ary;
     VALUE val;
-    long i;
+{
+    int i = RARRAY(ary)->len;
 
-    if (argc == 0) {
-	RETURN_ENUMERATOR(ary, 0, 0);
-	for (i=0; i<RARRAY_LEN(ary); i++) {
-	    if (RTEST(rb_yield(RARRAY_AREF(ary, i)))) {
-		return LONG2NUM(i);
-	    }
-	}
-	return Qnil;
-    }
-    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++) {
-	VALUE e = RARRAY_AREF(ary, i);
-	if (rb_equal(e, val)) {
-	    return LONG2NUM(i);
-	}
+    while (i--) {
+	if (rb_equal(RARRAY(ary)->ptr[i], val))
+	    return INT2FIX(i);
     }
     return Qnil;
 }
 
-/*
- *  call-seq:
- *    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)
+ary_indexes(argc, argv, ary)
+    int argc;
+    VALUE *argv;
+    VALUE ary;
 {
-    VALUE val;
-    long i = RARRAY_LEN(ary), len;
+    VALUE new_ary;
+    int i;
 
-    if (argc == 0) {
-	RETURN_ENUMERATOR(ary, 0, 0);
-	while (i--) {
-	    if (RTEST(rb_yield(RARRAY_AREF(ary, i))))
-		return LONG2NUM(i);
-	    if (i > (len = RARRAY_LEN(ary))) {
-		i = len;
-	    }
-	}
-	return Qnil;
-    }
-    rb_check_arity(argc, 0, 1);
-    val = argv[0];
-    if (rb_block_given_p())
-	rb_warn("given block not used");
-    while (i--) {
-	VALUE e = RARRAY_AREF(ary, i);
-	if (rb_equal(e, val)) {
-	    return LONG2NUM(i);
-	}
-        if (i > RARRAY_LEN(ary)) {
-            break;
-        }
+    new_ary = ary_new2(argc);
+    for (i=0; i<argc; i++) {
+	ary_store(new_ary, i, ary_entry(ary, NUM2INT(argv[i])));
     }
-    return Qnil;
-}
-
-VALUE
-rb_ary_to_ary(VALUE obj)
-{
-    VALUE tmp = rb_check_array_type(obj);
 
-    if (!NIL_P(tmp)) return tmp;
-    return rb_ary_new3(1, obj);
+    return new_ary;
 }
 
 static void
-rb_ary_splice(VALUE ary, long beg, long len, const VALUE *rptr, long rlen)
+ary_replace(ary, beg, len, rpl)
+    VALUE ary, rpl;
+    int beg, len;
 {
-    long olen;
-    long rofs;
-
-    if (len < 0) rb_raise(rb_eIndexError, "negative length (%ld)", len);
-    olen = RARRAY_LEN(ary);
-    if (beg < 0) {
-	beg += olen;
-	if (beg < 0) {
-	    rb_raise(rb_eIndexError, "index %ld too small for array; minimum: %ld",
-		     beg - olen, -olen);
-	}
+    ary_modify(ary);
+    if (TYPE(rpl) != T_ARRAY) {
+	rpl = rb_Array(rpl);
     }
-    if (olen < len || olen < beg + len) {
-	len = olen - beg;
-    }
-
-    {
-        const VALUE *optr = RARRAY_CONST_PTR_TRANSIENT(ary);
-	rofs = (rptr >= optr && rptr < optr + olen) ? rptr - optr : -1;
+    if (beg < 0) {
+	beg = RARRAY(ary)->len + beg;
+	if (beg < 0) beg = 0;
     }
-
-    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;
-	ary_mem_clear(ary, olen, beg - olen);
-	if (rlen > 0) {
-            if (rofs != -1) rptr = RARRAY_CONST_PTR_TRANSIENT(ary) + rofs;
-	    ary_memcpy0(ary, beg, rlen, rptr, target_ary);
+    if (beg >= RARRAY(ary)->len) {
+	len = beg + RARRAY(rpl)->len;
+	if (len >= RARRAY(ary)->capa) {
+	    RARRAY(ary)->capa=len;
+	    REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
 	}
-	ARY_SET_LEN(ary, len);
+	memclear(RARRAY(ary)->ptr+RARRAY(ary)->len, beg-RARRAY(ary)->len);
+	MEMCPY(RARRAY(ary)->ptr+beg, RARRAY(rpl)->ptr, VALUE, RARRAY(rpl)->len);
+	RARRAY(ary)->len = len;
     }
     else {
-	long alen;
+	int alen;
 
-	if (olen - len > ARY_MAX_SIZE - rlen) {
-	    rb_raise(rb_eIndexError, "index %ld too big", olen + rlen - len);
+	if (beg + len > RARRAY(ary)->len) {
+	    len = RARRAY(ary)->len - beg;
 	}
-	rb_ary_modify(ary);
-	alen = olen + rlen - len;
-	if (alen >= ARY_CAPA(ary)) {
-	    ary_double_capa(ary, alen);
+	if (len < 0) {
+	    IndexError("negative length %d", RARRAY(ary)->len);
 	}
 
-	if (len != rlen) {
-            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) {
-            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));
+	alen = RARRAY(ary)->len + RARRAY(rpl)->len - len;
+	if (alen >= RARRAY(ary)->capa) {
+	    RARRAY(ary)->capa=alen;
+	    REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
 	}
-    }
-}
-
-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);
+	if (len != RARRAY(rpl)->len) {
+	    MEMMOVE(RARRAY(ary)->ptr+beg+RARRAY(rpl)->len, RARRAY(ary)->ptr+beg+len,
+		    VALUE, RARRAY(ary)->len-(beg+len));
+	    RARRAY(ary)->len = alen;
 	}
-	ary_mem_clear(ary, olen, len - olen);
-	ARY_SET_LEN(ary, len);
+	MEMCPY(RARRAY(ary)->ptr+beg, RARRAY(rpl)->ptr, VALUE, RARRAY(rpl)->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)
+ary_aset(argc, argv, ary)
+    int argc;
+    VALUE *argv;
+    VALUE ary;
 {
-    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;
-}
+    VALUE arg1, arg2, arg3;
+    int offset;
+    int beg, len;
 
-/*
- *  call-seq:
- *    array[index] = object -> object
- *    array[start, length] = object -> object
- *    array[range] = object -> object
- *
- *  Assigns elements in +self+; returns the given +object+.
- *
- *  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
-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]);
-        return ary_aset_by_rb_ary_splice(ary, beg, len, argv[2]);
+    if (rb_scan_args(argc, argv, "21", &arg1, &arg2, &arg3) == 3) {
+	beg = NUM2INT(arg1);
+	len = NUM2INT(arg2);
+	ary_replace(ary, beg, len, arg3);
+	return arg3;
     }
-    if (FIXNUM_P(argv[0])) {
-	offset = FIX2LONG(argv[0]);
-        return ary_aset_by_rb_ary_store(ary, offset, argv[1]);
+    else if (FIXNUM_P(arg1)) {
+	offset = FIX2INT(arg1);
+	goto fixnum;
     }
-    if (rb_range_beg_len(argv[0], &beg, &len, RARRAY_LEN(ary), 1)) {
+    else if (beg_len(arg1, &beg, &len, RARRAY(ary)->len)) {
 	/* check if idx is Range */
-        return ary_aset_by_rb_ary_splice(ary, beg, len, argv[1]);
+	ary_replace(ary, beg, len, arg2);
+	return arg2;
     }
-
-    offset = NUM2LONG(argv[0]);
-    return ary_aset_by_rb_ary_store(ary, offset, argv[1]);
-}
-
-/*
- *  call-seq:
- *    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
-rb_ary_insert(int argc, VALUE *argv, VALUE ary)
-{
-    long pos;
-
-    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 (TYPE(arg1) == T_BIGNUM) {
+	IndexError("index too big");
     }
-    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, 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);
+    offset = NUM2INT(arg1);
+  fixnum:
+    if (offset < 0) {
+	offset = RARRAY(ary)->len + offset;
+    }
+    ary_store(ary, offset, arg2);
+    return arg2;
 }
 
-/*
- *  call-seq:
- *    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)
+ary_each(ary)
+    VALUE ary;
 {
-    long i;
-    ary_verify(ary);
-    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
-    for (i=0; i<RARRAY_LEN(ary); i++) {
-	rb_yield(RARRAY_AREF(ary, i));
+    int i;
+
+    for (i=0; i<RARRAY(ary)->len; i++) {
+	rb_yield(RARRAY(ary)->ptr[i]);
     }
-    return ary;
+    return Qnil;
 }
 
-/*
- *  call-seq:
- *    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)
+ary_each_index(ary)
+    VALUE ary;
 {
-    long i;
-    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    int i;
 
-    for (i=0; i<RARRAY_LEN(ary); i++) {
-	rb_yield(LONG2NUM(i));
+    for (i=0; i<RARRAY(ary)->len; i++) {
+	rb_yield(INT2FIX(i));
     }
-    return ary;
+    return Qnil;
 }
 
-/*
- *  call-seq:
- *    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
-rb_ary_reverse_each(VALUE ary)
+ary_reverse_each(ary)
+    VALUE ary;
 {
-    long len;
+    int len = RARRAY(ary)->len;
 
-    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
-    len = RARRAY_LEN(ary);
     while (len--) {
-	long nlen;
-	rb_yield(RARRAY_AREF(ary, len));
-	nlen = RARRAY_LEN(ary);
-	if (nlen < len) {
-	    len = nlen;
-	}
+	rb_yield(RARRAY(ary)->ptr[len]);
     }
-    return ary;
+    return Qnil;
 }
 
-/*
- *  call-seq:
- *    array.length -> an_integer
- *
- *  Returns the count of elements in +self+.
- */
-
 static VALUE
-rb_ary_length(VALUE ary)
+ary_length(ary)
+    VALUE ary;
 {
-    long len = RARRAY_LEN(ary);
-    return LONG2NUM(len);
+    return INT2FIX(RARRAY(ary)->len);
 }
 
-/*
- *  call-seq:
- *    array.empty?  -> true or false
- *
- *  Returns +true+ if the count of elements in +self+ is zero,
- *  +false+ otherwise.
- */
-
 static VALUE
-rb_ary_empty_p(VALUE ary)
-{
-    if (RARRAY_LEN(ary) == 0)
-	return Qtrue;
-    return Qfalse;
-}
-
-VALUE
-rb_ary_dup(VALUE 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)
+ary_empty_p(ary)
+    VALUE ary;
 {
-    return ary_make_partial(ary, rb_cArray, 0, RARRAY_LEN(ary));
+    if (RARRAY(ary)->len == 0)
+	return TRUE;
+    return FALSE;
 }
 
-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 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) {
-	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)
+ary_clone(ary)
+    VALUE ary;
 {
-    long i;
-    VALUE val;
+    VALUE ary2 = ary_new2(RARRAY(ary)->len);
 
-    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;
+    CLONESETUP(ary2, ary);
+    MEMCPY(RARRAY(ary2)->ptr, RARRAY(ary)->ptr, VALUE, RARRAY(ary)->len);
+    RARRAY(ary2)->len = RARRAY(ary)->len;
+    return ary2;
 }
 
-static void
-ary_join_1_str(VALUE dst, VALUE src, int *first)
+static VALUE
+ary_dup(ary)
+    VALUE ary;
 {
-    rb_str_buf_append(dst, src);
-    if (*first) {
-        rb_enc_copy(dst, src);
-        *first = FALSE;
-    }
+    return ary_new4(RARRAY(ary)->len, RARRAY(ary)->ptr);
 }
 
-static void
-ary_join_1_ary(VALUE obj, VALUE ary, VALUE sep, VALUE result, VALUE val, int *first)
+static VALUE
+to_ary(ary)
+    VALUE ary;
 {
-    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);
-    }
+    return rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
 }
 
-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);
-	}
-    }
-}
+extern VALUE OFS;
 
 VALUE
-rb_ary_join(VALUE ary, VALUE sep)
+ary_join(ary, sep)
+    VALUE ary;
+    VALUE sep;
 {
-    long len = 1, i;
-    VALUE val, tmp, result;
-
-    if (RARRAY_LEN(ary) == 0) return rb_usascii_str_new(0, 0);
+    int i;
+    VALUE result, tmp;
+    if (RARRAY(ary)->len == 0) return str_new(0, 0);
 
-    if (!NIL_P(sep)) {
-	StringValue(sep);
-	len += RSTRING_LEN(sep) * (RARRAY_LEN(ary) - 1);
+    switch (TYPE(RARRAY(ary)->ptr[0])) {
+      case T_STRING:
+	result = str_dup(RARRAY(ary)->ptr[0]);
+	break;
+      case T_ARRAY:
+	result = ary_join(RARRAY(ary)->ptr[0], sep);
+	break;
+      default:
+	result = obj_as_string(RARRAY(ary)->ptr[0]);
+	break;
     }
-    for (i=0; i<RARRAY_LEN(ary); i++) {
-	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;
-	}
 
-	len += RSTRING_LEN(tmp);
+    for (i=1; i<RARRAY(ary)->len; i++) {
+	tmp = RARRAY(ary)->ptr[i];
+	switch (TYPE(tmp)) {
+	  case T_STRING:
+	    break;
+	  case T_ARRAY:
+	    tmp = ary_join(tmp, sep);
+	    break;
+	  default:
+	    tmp = obj_as_string(tmp);
+	}
+	if (!NIL_P(sep)) str_cat(result, RSTRING(sep)->ptr, RSTRING(sep)->len);
+	str_cat(result, RSTRING(tmp)->ptr, RSTRING(tmp)->len);
+	if (str_tainted(tmp)) str_taint(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 ->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)
+ary_join_method(argc, argv, ary)
+    int argc;
+    VALUE *argv;
+    VALUE ary;
 {
     VALUE sep;
 
-    if (rb_check_arity(argc, 0, 1) == 0 || NIL_P(sep = argv[0])) {
-        sep = rb_output_fs;
-        if (!NIL_P(sep)) {
-            rb_warn("$, is set to non-nil value");
-        }
-    }
+    rb_scan_args(argc, argv, "01", &sep);
+    if (NIL_P(sep)) sep = OFS;
+    if (!NIL_P(sep)) Check_Type(sep, T_STRING);
 
-    return rb_ary_join(ary, sep);
+    return ary_join(ary, sep);
 }
 
-static VALUE
-inspect_ary(VALUE ary, VALUE dummy, int recur)
+VALUE
+ary_to_s(ary)
+    VALUE ary;
 {
-    long i;
-    VALUE s, str;
-
-    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_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, "]");
+    VALUE str = ary_join(ary, OFS);
+    if (NIL_P(str)) return str_new(0, 0);
     return str;
 }
 
-/*
- *  call-seq:
- *    array.inspect -> new_string
- *
- *  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
-rb_ary_inspect(VALUE ary)
-{
-    if (RARRAY_LEN(ary) == 0) return rb_usascii_str_new2("[]");
-    return rb_exec_recursive(inspect_ary, ary, 0);
-}
-
-VALUE
-rb_ary_to_s(VALUE ary)
+ary_inspect(ary)
+    VALUE ary;
 {
-    return rb_ary_inspect(ary);
-}
+    int i, len;
+    VALUE s, str;
 
-/*
- *  call-seq:
- *    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
- */
+    if (RARRAY(ary)->len == 0) return str_new2("[]");
+    str = str_new2("[");
+    len = 1;
 
-static VALUE
-rb_ary_to_a(VALUE ary)
-{
-    if (rb_obj_class(ary) != rb_cArray) {
-	VALUE dup = rb_ary_new2(RARRAY_LEN(ary));
-	rb_ary_replace(dup, ary);
-	return dup;
+    for (i=0; i<RARRAY(ary)->len; i++) {
+	s = rb_inspect(RARRAY(ary)->ptr[i]);
+	if (i > 0) str_cat(str, ", ", 2);
+	str_cat(str, RSTRING(s)->ptr, RSTRING(s)->len);
+	len += RSTRING(s)->len + 2;
     }
-    return ary;
-}
-
-/*
- *  call-seq:
- *    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"}
- */
+    str_cat(str, "]", 1);
 
-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;
+    return str;
 }
 
-/*
- *  call-seq:
- *    array.to_ary -> self
- *
- *  Returns +self+.
- */
-
 static VALUE
-rb_ary_to_ary_m(VALUE ary)
+ary_to_a(ary)
+    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 *p2;
-    long len = RARRAY_LEN(ary);
-
-    rb_ary_modify(ary);
-    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! -> self
- *
- *  Reverses +self+ in place:
- *    a = ['foo', 'bar', 'two']
- *    a.reverse! # => ["two", "bar", "foo"]
- */
-
-static VALUE
-rb_ary_reverse_bang(VALUE ary)
-{
-    return rb_ary_reverse(ary);
-}
-
-/*
- *  call-seq:
- *    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)
+ary_reverse(ary)
+    VALUE 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;
-}
+    VALUE *p1, *p2;
+    VALUE tmp;
 
-static inline long
-rotate_count(long cnt, long len)
-{
-    return (cnt < 0) ? (len - (~cnt % len) - 1) : (cnt % len);
-}
+    if (RARRAY(ary)->len == 0) return ary;
 
-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);
-    }
-}
+    p1 = RARRAY(ary)->ptr;
+    p2 = p1 + RARRAY(ary)->len - 1;	/* points last item */
 
-VALUE
-rb_ary_rotate(VALUE ary, long cnt)
-{
-    rb_ary_modify(ary);
-
-    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;
-        }
+    while (p1 < p2) {
+	tmp = *p1;
+	*p1 = *p2;
+	*p2 = tmp;
+	p1++; p2--;
     }
-    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 {
+ary_reverse_method(ary)
     VALUE ary;
-    struct cmp_opt_data cmp_opt;
-};
-
-static VALUE
-sort_reentered(VALUE ary)
 {
-    if (RBASIC(ary)->klass) {
-	rb_raise(rb_eRuntimeError, "sort reentered");
-    }
-    return Qnil;
+    return ary_reverse(ary_dup(ary));
 }
 
+static ID cmp;
+
 static int
-sort_1(const void *ap, const void *bp, void *dummy)
+sort_1(a, b)
+    VALUE *a, *b;
 {
-    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;
-
-    args[0] = a;
-    args[1] = b;
-    retval = rb_yield_values2(2, args);
-    n = rb_cmpint(retval, a, b);
-    sort_reentered(data->ary);
-    return n;
+    VALUE retval = rb_yield(assoc_new(*a, *b));
+    return NUM2INT(retval);
 }
 
 static int
-sort_2(const void *ap, const void *bp, void *dummy)
+sort_2(a, b)
+    VALUE *a, *b;
 {
-    struct ary_sort_data *data = dummy;
-    VALUE retval = sort_reentered(data->ary);
-    VALUE a = *(const VALUE *)ap, b = *(const VALUE *)bp;
-    int n;
+    VALUE retval;
 
-    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) && CMP_OPTIMIZABLE(data->cmp_opt, String)) {
-	return rb_str_cmp(a, b);
+    if (FIXNUM_P(*a)) {
+	if (FIXNUM_P(*b)) return *a - *b;
     }
-    if (RB_FLOAT_TYPE_P(a) && CMP_OPTIMIZABLE(data->cmp_opt, Float)) {
-	return rb_float_cmp(a, b);
+    else if (TYPE(*a) == T_STRING) {
+	if (TYPE(*b) == T_STRING) return str_cmp(*a, *b);
     }
 
-    retval = rb_funcallv(a, id_cmp, 1, &b);
-    n = rb_cmpint(retval, a, b);
-    sort_reentered(data->ary);
-
-    return n;
+    retval = rb_funcall(*a, cmp, 1, *b);
+    return NUM2INT(retval);
 }
 
-/*
- *  call-seq:
- *    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
-rb_ary_sort_bang(VALUE ary)
-{
-    rb_ary_modify(ary);
-    assert(!ARY_SHARED_P(ary));
-    if (RARRAY_LEN(ary) > 1) {
-	VALUE tmp = ary_make_substitution(ary); /* only ary refers tmp */
-	struct ary_sort_data data;
-	long len = RARRAY_LEN(ary);
-	RBASIC_CLEAR_CLASS(tmp);
-	data.ary = tmp;
-	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)) {
-            if (ARY_SHARED_P(ary)) { /* ary might be destructively operated in the given block */
-                rb_ary_unshare(ary);
-		FL_SET_EMBED(ary);
-            }
-	    ary_memcpy(ary, 0, ARY_EMBED_LEN(tmp), ARY_EMBED_PTR(tmp));
-            ARY_SET_LEN(ary, ARY_EMBED_LEN(tmp));
-        }
-        else {
-            if (!ARY_EMBED_P(ary) && ARY_HEAP_PTR(ary) == ARY_HEAP_PTR(tmp)) {
-                FL_UNSET_SHARED(ary);
-                ARY_SET_CAPA(ary, RARRAY_LEN(tmp));
-            }
-            else {
-                assert(!ARY_SHARED_P(tmp));
-                if (ARY_EMBED_P(ary)) {
-                    FL_UNSET_EMBED(ary);
-                }
-                else if (ARY_SHARED_P(ary)) {
-                    /* ary might be destructively operated in the given block */
-                    rb_ary_unshare(ary);
-                }
-                else {
-                    ary_heap_free(ary);
-                }
-                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_SET_CLASS_RAW(tmp, rb_cArray); /* rb_cArray must be marked */
-    }
-    ary_verify(ary);
-    return ary;
-}
-
-/*
- *  call-seq:
- *    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
-rb_ary_sort(VALUE ary)
-{
-    ary = rb_ary_dup(ary);
-    rb_ary_sort_bang(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.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
-rb_ary_collect(VALUE ary)
-{
-    long i;
-    VALUE collect;
-
-    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_AREF(ary, i)));
-    }
-    return collect;
-}
-
-
-/*
- *  call-seq:
- *    array.map! {|element| ... } -> self
- *    array.map! -> new_enumerator
- *
- *  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
-rb_ary_collect_bang(VALUE ary)
+ary_sort_bang(ary)
+    VALUE ary;
 {
-    long i;
+    if (RARRAY(ary)->len == 0) return ary;
 
-    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_AREF(ary, i)));
-    }
+    ary_modify(ary);
+    qsort(RARRAY(ary)->ptr, RARRAY(ary)->len, sizeof(VALUE),
+	  iterator_p()?sort_1:sort_2);
     return ary;
 }
 
 VALUE
-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;
-
-    for (i=0; i<argc; i++) {
-	if (FIXNUM_P(argv[i])) {
-	    rb_ary_push(result, (*func)(obj, FIX2LONG(argv[i])));
-	    continue;
-	}
-	/* check if idx is Range */
-	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])));
-    }
-    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(*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 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)
-{
-    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 {|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
-rb_ary_select(VALUE ary)
-{
-    VALUE result;
-    long i;
-
-    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_AREF(ary, i)))) {
-	    rb_ary_push(result, rb_ary_elt(ary, i));
-	}
-    }
-    return result;
-}
-
-struct select_bang_arg {
+ary_sort(ary)
     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;
-	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);
-	}
-    }
+    if (RARRAY(ary)->len == 0) return ary;
+    return ary_sort_bang(ary_dup(ary));
 }
 
-/*
- *  call-seq:
- *    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
-rb_ary_delete(VALUE ary, VALUE item)
+ary_delete(ary, item)
+    VALUE ary;
+    VALUE item;
 {
-    VALUE v = item;
-    long i1, i2;
+    int i1, i2;
 
-    for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); i1++) {
-	VALUE e = RARRAY_AREF(ary, i1);
-
-	if (rb_equal(e, item)) {
-	    v = e;
-	    continue;
-	}
+    ary_modify(ary);
+    for (i1 = i2 = 0; i1 < RARRAY(ary)->len; i1++) {
+	if (rb_equal(RARRAY(ary)->ptr[i1], item)) continue;
 	if (i1 != i2) {
-	    rb_ary_store(ary, i2, e);
+	    RARRAY(ary)->ptr[i2] = RARRAY(ary)->ptr[i1];
 	}
 	i2++;
     }
-    if (RARRAY_LEN(ary) == i2) {
-	if (rb_block_given_p()) {
-	    return rb_yield(item);
-	}
+    if (RARRAY(ary)->len == i2) {
+	if (iterator_p()) rb_yield(item);
 	return Qnil;
     }
+    else {
+	RARRAY(ary)->len = i2;
+    }
 
-    ary_resize_smaller(ary, i2);
-
-    ary_verify(ary);
-    return v;
+    return item;
 }
 
-void
-rb_ary_delete_same(VALUE ary, VALUE item)
+VALUE
+ary_delete_at(ary, at)
+    VALUE ary;
+    VALUE at;
 {
-    long i1, i2;
-
-    for (i1 = i2 = 0; i1 < RARRAY_LEN(ary); i1++) {
-	VALUE e = RARRAY_AREF(ary, i1);
+    int i1, i2, pos;
+    VALUE del = Qnil;
 
-	if (e == item) {
+    ary_modify(ary);
+    pos = NUM2INT(at);
+    for (i1 = i2 = 0; i1 < RARRAY(ary)->len; i1++) {
+	if (i1 == pos) {
+	    del = RARRAY(ary)->ptr[i1];
 	    continue;
 	}
 	if (i1 != i2) {
-	    rb_ary_store(ary, i2, e);
+	    RARRAY(ary)->ptr[i2] = RARRAY(ary)->ptr[i1];
 	}
 	i2++;
     }
-    if (RARRAY_LEN(ary) == i2) {
-	return;
-    }
-
-    ary_resize_smaller(ary, i2);
-}
-
-VALUE
-rb_ary_delete_at(VALUE ary, long pos)
-{
-    long len = RARRAY_LEN(ary);
-    VALUE del;
-
-    if (pos >= len) return Qnil;
-    if (pos < 0) {
-	pos += len;
-	if (pos < 0) return Qnil;
-    }
+    RARRAY(ary)->len = i2;
 
-    rb_ary_modify(ary);
-    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) -> 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
-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;
-    }
-    else 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);
-        RBASIC_SET_CLASS(arg2, rb_obj_class(ary));
-        rb_ary_splice(ary, pos, len, 0, 0);
-        return arg2;
-    }
-}
-
-/*
- *  call-seq:
- *    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;
-    long pos, len;
-
-    rb_ary_modify_check(ary);
-    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 */
-            return ary_slice_bang_by_rb_ary_splice(ary, pos, len);
-	  case Qnil:
-	    /* invalid range */
-	    return Qnil;
-	  default:
-	    /* not a range */
-	    break;
-	}
-    }
-
-    return rb_ary_delete_at(ary, NUM2LONG(arg1));
-}
-
-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
-reject_bang_i(VALUE a)
+ary_delete_if(ary)
+    VALUE ary;
 {
-    volatile struct select_bang_arg *arg = (void *)a;
-    VALUE ary = arg->ary;
-    long i1, i2;
+    int 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;
+    ary_modify(ary);
+    for (i1 = i2 = 0; i1 < RARRAY(ary)->len; i1++) {
+	if (rb_yield(RARRAY(ary)->ptr[i1])) continue;
 	if (i1 != i2) {
-	    rb_ary_store(ary, i2, v);
+	    RARRAY(ary)->ptr[i2] = RARRAY(ary)->ptr[i1];
 	}
-	arg->len[1] = ++i2;
+	i2++;
     }
-    return (i1 == i2) ? Qnil : 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);
-}
+    RARRAY(ary)->len = i2;
 
-/*
- *  call-seq:
- *    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)
-{
-    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 {|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)
-{
-    ary_verify(ary);
-    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
-    ary_reject_bang(ary);
     return ary;
 }
 
 static VALUE
-take_i(RB_BLOCK_CALL_FUNC_ARGLIST(val, cbarg))
-{
-    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;
-}
-
-static VALUE
-take_items(VALUE obj, long n)
-{
-    VALUE result = rb_check_array_type(obj);
-    VALUE args[2];
-
-    if (!NIL_P(result)) return rb_ary_subseq(result, 0, n);
-    result = rb_ary_new2(n);
-    args[0] = result; args[1] = (VALUE)n;
-    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(*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)
+ary_filter(ary)
+    VALUE ary;
 {
-    int i, j;
-    long len = RARRAY_LEN(ary);
-    VALUE result = Qnil;
-
-    for (i=0; i<argc; i++) {
-	argv[i] = take_items(argv[i], len);
-    }
-
-    if (rb_block_given_p()) {
-	int arity = rb_block_arity();
-
-	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);
+    int i;
 
-	    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);
-	}
+    ary_modify(ary);
+    for (i = 0; i < RARRAY(ary)->len; i++) {
+	RARRAY(ary)->ptr[i] = rb_yield(RARRAY(ary)->ptr[i]);
     }
-
-    return result;
+    return ary;
 }
 
-/*
- *  call-seq:
- *    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
-rb_ary_transpose(VALUE ary)
+ary_replace_method(ary, ary2)
+    VALUE ary, ary2;
 {
-    long elen = -1, alen, i, j;
-    VALUE tmp, result = 0;
-
-    alen = RARRAY_LEN(ary);
-    if (alen == 0) return rb_ary_dup(ary);
-    for (i=0; i<alen; i++) {
-	tmp = to_ary(rb_ary_elt(ary, i));
-	if (elen < 0) {		/* first element */
-	    elen = RARRAY_LEN(tmp);
-	    result = rb_ary_new2(elen);
-	    for (j=0; j<elen; j++) {
-		rb_ary_store(result, j, rb_ary_new2(alen));
-	    }
-	}
-	else if (elen != RARRAY_LEN(tmp)) {
-	    rb_raise(rb_eIndexError, "element size differs (%ld should be %ld)",
-		     RARRAY_LEN(tmp), elen);
-	}
-	for (j=0; j<elen; j++) {
-	    rb_ary_store(rb_ary_elt(result, j), i, rb_ary_elt(tmp, j));
-	}
-    }
-    return result;
-}
-
-/*
- *  call-seq:
- *    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)
-{
-    rb_ary_modify_check(copy);
-    orig = to_ary(orig);
-    if (copy == orig) return copy;
-
-    if (RARRAY_LEN(orig) <= RARRAY_EMBED_LEN_MAX) {
-        VALUE shared_root = 0;
-
-        if (ARY_OWNS_HEAP_P(copy)) {
-            ary_heap_free(copy);
-	}
-        else if (ARY_SHARED_P(copy)) {
-            shared_root = ARY_SHARED_ROOT(copy);
-            FL_UNSET_SHARED(copy);
-        }
-        FL_SET_EMBED(copy);
-        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_root = ary_make_shared(orig);
-        if (ARY_OWNS_HEAP_P(copy)) {
-            ary_heap_free(copy);
-        }
-        else {
-            rb_ary_unshare_safe(copy);
-        }
-        FL_UNSET_EMBED(copy);
-        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;
+    ary2 = to_ary(ary2);
+    ary_replace(ary, 0, RARRAY(ary2)->len, ary2);
+    return ary;
 }
 
-/*
- *  call-seq:
- *     array.clear -> self
- *
- *  Removes all elements from +self+:
- *    a = [:foo, 'bar', 2]
- *    a.clear # => []
- */
-
-VALUE
-rb_ary_clear(VALUE ary)
+static VALUE
+ary_clear(ary)
+    VALUE ary;
 {
-    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);
-        }
+    RARRAY(ary)->len = 0;
+    if (ARY_DEFAULT_SIZE*3 < RARRAY(ary)->capa) {
+	RARRAY(ary)->capa = ARY_DEFAULT_SIZE * 2;
+	REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
     }
-    ary_verify(ary);
     return ary;
 }
 
-/*
- *  call-seq:
- *    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)
+ary_fill(argc, argv, ary)
+    int argc;
+    VALUE *argv;
+    VALUE ary;
 {
-    VALUE item = Qundef, arg1, arg2;
-    long beg = 0, end = 0, len = 0;
+    VALUE item, arg1, arg2;
+    int beg, len, end;
+    VALUE *p, *pend;
 
-    if (rb_block_given_p()) {
-	rb_scan_args(argc, argv, "02", &arg1, &arg2);
-	argc += 1;		/* hackish */
+    rb_scan_args(argc, argv, "12", &item, &arg1, &arg2);
+    if (NIL_P(arg2) && beg_len(arg1, &beg, &len, RARRAY(ary)->len)) {
+	/* beg and len set already */
     }
     else {
-	rb_scan_args(argc, argv, "12", &item, &arg1, &arg2);
-    }
-    switch (argc) {
-      case 1:
-	beg = 0;
-	len = RARRAY_LEN(ary);
-	break;
-      case 2:
-	if (rb_range_beg_len(arg1, &beg, &len, RARRAY_LEN(ary), 1)) {
-	    break;
-	}
-	/* fall through */
-      case 3:
-	beg = NIL_P(arg1) ? 0 : NUM2LONG(arg1);
+	beg = NUM2INT(arg1);
 	if (beg < 0) {
-	    beg = RARRAY_LEN(ary) + beg;
+	    beg = RARRAY(ary)->len + beg;
 	    if (beg < 0) beg = 0;
 	}
-	len = NIL_P(arg2) ? RARRAY_LEN(ary) - beg : NUM2LONG(arg2);
-	break;
-    }
-    rb_ary_modify(ary);
-    if (len < 0) {
-        return ary;
-    }
-    if (beg >= ARY_MAX_SIZE || len > ARY_MAX_SIZE - beg) {
-	rb_raise(rb_eArgError, "argument too big");
+	if (!NIL_P(arg2)) {
+	    len = NUM2INT(arg2);
+	}
+	else {
+	    len = RARRAY(ary)->len - beg;
+	}
     }
     end = beg + len;
-    if (RARRAY_LEN(ary) < end) {
-	if (end >= ARY_CAPA(ary)) {
-	    ary_resize_capa(ary, end);
+    if (end > RARRAY(ary)->len) {
+	if (end >= RARRAY(ary)->capa) {
+	    RARRAY(ary)->capa=end;
+	    REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->capa);
 	}
-	ary_mem_clear(ary, RARRAY_LEN(ary), end - RARRAY_LEN(ary));
-	ARY_SET_LEN(ary, end);
-    }
-
-    if (item == Qundef) {
-	VALUE v;
-	long i;
-
-	for (i=beg; i<end; i++) {
-	    v = rb_yield(LONG2NUM(i));
-	    if (i>=RARRAY_LEN(ary)) break;
-	    ARY_SET(ary, i, v);
+	if (beg > RARRAY(ary)->len) {
+	    memclear(RARRAY(ary)->ptr+RARRAY(ary)->len, end-RARRAY(ary)->len);
 	}
+	RARRAY(ary)->len = end;
     }
-    else {
-	ary_memfill(ary, beg, len, item);
+    p = RARRAY(ary)->ptr + beg; pend = p + len;
+
+    while (p < pend) {
+	*p++ = item;
     }
     return ary;
 }
 
-/*
- *  call-seq:
- *    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]
- *
- *  Related: #concat.
- */
-
 VALUE
-rb_ary_plus(VALUE x, VALUE y)
+ary_plus(x, y)
+    VALUE x, y;
 {
     VALUE z;
-    long len, xlen, ylen;
 
-    y = to_ary(y);
-    xlen = RARRAY_LEN(x);
-    ylen = RARRAY_LEN(y);
-    len = xlen + ylen;
-    z = rb_ary_new2(len);
+    if (TYPE(y) != T_ARRAY) {
+	return ary_plus(x, rb_Array(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);
+    z = ary_new2(RARRAY(x)->len + RARRAY(y)->len);
+    MEMCPY(RARRAY(z)->ptr, RARRAY(x)->ptr, VALUE, RARRAY(x)->len);
+    MEMCPY(RARRAY(z)->ptr+RARRAY(x)->len, RARRAY(y)->ptr, VALUE, RARRAY(y)->len);
+    RARRAY(z)->len = RARRAY(x)->len + RARRAY(y)->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);
-    }
-    return x;
-}
-
-/*
- *  call-seq:
- *    array.concat(*other_arrays) -> self
- *
- *  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)
+VALUE
+ary_concat(x, y)
+    VALUE x, y;
 {
-    rb_ary_modify_check(ary);
+    VALUE *p, *pend;
 
-    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);
+    if (TYPE(y) != T_ARRAY) {
+	return ary_concat(x, rb_Array(y));
     }
 
-    ary_verify(ary);
-    return ary;
-}
-
-VALUE
-rb_ary_concat(VALUE x, VALUE y)
-{
-    return ary_append(x, to_ary(y));
+    p = RARRAY(y)->ptr;
+    pend = p + RARRAY(y)->len;
+    while (p < pend) {
+	ary_store(x, RARRAY(x)->len, *p);
+	p++;
+    }
+    return x;
 }
 
-/*
- *  call-seq:
- *    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"]
- *
- *  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)
+ary_times(ary, times)
+    VALUE ary;
+    VALUE times;
 {
-    VALUE ary2, tmp;
-    const VALUE *ptr;
-    long t, len;
+    VALUE ary2;
+    int i, len;
 
-    tmp = rb_check_string_type(times);
-    if (!NIL_P(tmp)) {
-	return rb_ary_join(ary, tmp);
+    if (TYPE(times) == T_STRING) {
+	return ary_join(ary, times);
     }
 
-    len = NUM2LONG(times);
-    if (len == 0) {
-	ary2 = ary_new(rb_obj_class(ary), 0);
-	goto out;
-    }
+    len = NUM2INT(times) * RARRAY(ary)->len;
+    ary2 = ary_new2(len);
+    RARRAY(ary2)->len = len;
+
     if (len < 0) {
-	rb_raise(rb_eArgError, "negative argument");
+	ArgError("negative argument");
     }
-    if (ARY_MAX_SIZE/len < RARRAY_LEN(ary)) {
-	rb_raise(rb_eArgError, "argument too big");
-    }
-    len *= RARRAY_LEN(ary);
-
-    ary2 = ary_new(rb_obj_class(ary), len);
-    ARY_SET_LEN(ary2, len);
-
-    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));
-        }
+
+    for (i=0; i<len; i+=RARRAY(ary)->len) {
+	MEMCPY(RARRAY(ary2)->ptr+i, RARRAY(ary)->ptr, VALUE, RARRAY(ary)->len);
     }
-  out:
+
     return ary2;
 }
 
-/*
- *  call-seq:
- *    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]
- *
- *  Returns +nil+ if no such element is found.
- *
- *  Related: #rassoc.
- */
-
 VALUE
-rb_ary_assoc(VALUE ary, VALUE key)
+ary_assoc(ary, key)
+    VALUE ary;
+    VALUE key;
 {
-    long i;
-    VALUE v;
+    VALUE *p, *pend;
 
-    for (i = 0; i < RARRAY_LEN(ary); ++i) {
-	v = rb_check_array_type(RARRAY_AREF(ary, i));
-	if (!NIL_P(v) && RARRAY_LEN(v) > 0 &&
-	    rb_equal(RARRAY_AREF(v, 0), key))
-	    return v;
+    p = RARRAY(ary)->ptr; pend = p + RARRAY(ary)->len;
+    while (p < pend) {
+	if (TYPE(*p) == T_ARRAY
+	    && RARRAY(*p)->len > 1
+	    && rb_equal(RARRAY(*p)->ptr[0], key))
+	    return *p;
+	p++;
     }
     return Qnil;
 }
 
-/*
- *  call-seq:
- *    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
-rb_ary_rassoc(VALUE ary, VALUE value)
+ary_rassoc(ary, value)
+    VALUE ary;
+    VALUE value;
 {
-    long i;
-    VALUE v;
+    VALUE *p, *pend;
 
-    for (i = 0; i < RARRAY_LEN(ary); ++i) {
-	v = RARRAY_AREF(ary, i);
-	if (RB_TYPE_P(v, T_ARRAY) &&
-	    RARRAY_LEN(v) > 1 &&
-	    rb_equal(RARRAY_AREF(v, 1), value))
-	    return v;
+    p = RARRAY(ary)->ptr; pend = p + RARRAY(ary)->len;
+    while (p < pend) {
+	if (TYPE(*p) == T_ARRAY
+	    && RARRAY(*p)->len > 1
+	    && rb_equal(RARRAY(*p)->ptr[1], value))
+	    return *p;
+	p++;
     }
     return Qnil;
 }
 
 static VALUE
-recursive_equal(VALUE ary1, VALUE ary2, int recur)
+ary_equal(ary1, ary2)
+    VALUE ary1, ary2;
 {
-    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 -> true or false
- *
- *  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
- *
- *  Otherwise, returns +false+.
- *
- *  This method is different from method Array#eql?,
- *  which compares elements using <tt>Object#eql?</tt>.
- */
+    int i;
 
-static VALUE
-rb_ary_equal(VALUE ary1, VALUE ary2)
-{
-    if (ary1 == ary2) return Qtrue;
-    if (!RB_TYPE_P(ary2, T_ARRAY)) {
-	if (!rb_respond_to(ary2, idTo_ary)) {
-	    return Qfalse;
-	}
-	return rb_equal(ary2, ary1);
+    if (TYPE(ary2) != T_ARRAY) return FALSE;
+    if (RARRAY(ary1)->len != RARRAY(ary2)->len) return FALSE;
+    for (i=0; i<RARRAY(ary1)->len; i++) {
+	if (!rb_equal(RARRAY(ary1)->ptr[i], RARRAY(ary2)->ptr[i]))
+	    return FALSE;
     }
-    if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return Qfalse;
-    if (RARRAY_CONST_PTR_TRANSIENT(ary1) == RARRAY_CONST_PTR_TRANSIENT(ary2)) return Qtrue;
-    return rb_exec_recursive_paired(recursive_equal, ary1, ary2, ary2);
+    return TRUE;
 }
 
 static VALUE
-recursive_eql(VALUE ary1, VALUE ary2, int recur)
+ary_eql(ary1, ary2)
+    VALUE ary1, ary2;
 {
-    long i;
+    int i;
 
-    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;
+    if (TYPE(ary2) != T_ARRAY) return FALSE;
+    if (RARRAY(ary1)->len != RARRAY(ary2)->len)
+	return FALSE;
+    for (i=0; i<RARRAY(ary1)->len; i++) {
+	if (!rb_eql(RARRAY(ary1)->ptr[i], RARRAY(ary2)->ptr[i]))
+	    return FALSE;
     }
-    return Qtrue;
+    return TRUE;
 }
 
-/*
- *  call-seq:
- *    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+.
- *
- *  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)
+ary_hash(ary)
+    VALUE ary;
 {
-    if (ary1 == ary2) return Qtrue;
-    if (!RB_TYPE_P(ary2, T_ARRAY)) return Qfalse;
-    if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return Qfalse;
-    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 -> integer
- *
- *  Returns the integer hash value for +self+.
- *
- *  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
- */
+    int h, i;
 
-static VALUE
-rb_ary_hash(VALUE ary)
-{
-    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 = RARRAY(ary)->len;
+    for (i=0; i<RARRAY(ary)->len; i++) {
+	h ^= rb_hash(RARRAY(ary)->ptr[i]);
     }
-    h = rb_hash_end(h);
-    return ST2FIX(h);
+    return INT2FIX(h);
 }
 
-/*
- *  call-seq:
- *    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++) {
-	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)
+ary_includes(ary, item)
+    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;
+    int i;
+    for (i=0; i<RARRAY(ary)->len; i++) {
+	if (rb_equal(RARRAY(ary)->ptr[i], item)) {
+	    return TRUE;
 	}
     }
-    return Qfalse;
+    return FALSE;
 }
 
-static VALUE
-recursive_cmp(VALUE ary1, VALUE ary2, int recur)
+VALUE
+ary_cmp(ary, ary2)
+    VALUE ary;
+    VALUE ary2;
 {
-    long i, len;
+    int i, len;
 
-    if (recur) return Qundef;	/* Subtle! */
-    len = RARRAY_LEN(ary1);
-    if (len > RARRAY_LEN(ary2)) {
-	len = RARRAY_LEN(ary2);
+    ary2 = to_ary(ary2);
+    len = RARRAY(ary)->len;
+    if (len > RARRAY(ary2)->len) {
+	len = RARRAY(ary2)->len;
     }
     for (i=0; i<len; i++) {
-	VALUE e1 = rb_ary_elt(ary1, i), e2 = rb_ary_elt(ary2, i);
-	VALUE v = rb_funcallv(e1, id_cmp, 1, &e2);
+	VALUE v = rb_funcall(RARRAY(ary)->ptr[i],cmp,1,RARRAY(ary2)->ptr[i]);
 	if (v != INT2FIX(0)) {
 	    return v;
 	}
     }
-    return Qundef;
-}
-
-/*
- *  call-seq:
- *    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>.
- *
- *  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
-rb_ary_cmp(VALUE ary1, VALUE ary2)
-{
-    long len;
-    VALUE v;
-
-    ary2 = rb_check_array_type(ary2);
-    if (NIL_P(ary2)) return Qnil;
-    if (ary1 == ary2) return INT2FIX(0);
-    v = rb_exec_recursive_paired(recursive_cmp, ary1, ary2, ary2);
-    if (v != Qundef) return v;
-    len = RARRAY_LEN(ary1) - RARRAY_LEN(ary2);
+    len = RARRAY(ary)->len - RARRAY(ary2)->len;
     if (len == 0) return INT2FIX(0);
     if (len > 0) return INT2FIX(1);
     return INT2FIX(-1);
 }
 
 static VALUE
-ary_add_hash(VALUE hash, VALUE ary)
-{
-    long i;
-
-    for (i=0; i<RARRAY_LEN(ary); i++) {
-	VALUE elt = RARRAY_AREF(ary, i);
-	rb_hash_add_new_element(hash, elt, elt);
-    }
-    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 -> new_array
- *
- *  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]
- *
- *  Related: Array#difference.
- */
-
-static VALUE
-rb_ary_diff(VALUE ary1, VALUE ary2)
+ary_diff(ary1, ary2)
+    VALUE ary1, ary2;
 {
     VALUE ary3;
-    VALUE hash;
-    long i;
+    int i;
 
     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;
+    ary3 = ary_new();
+    for (i=0; i<RARRAY(ary1)->len; i++) {
+	if (ary_includes(ary2, RARRAY(ary1)->ptr[i])) continue;
+	if (ary_includes(ary3, RARRAY(ary1)->ptr[i])) continue;
+	ary_push(ary3, RARRAY(ary1)->ptr[i]);
     }
-
-    hash = ary_make_hash(ary2);
-    for (i=0; i<RARRAY_LEN(ary1); i++) {
-        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.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]
- *
- *  Returns a copy of +self+ if no arguments given.
- *
- *  Related: Array#-.
- */
-
 static VALUE
-rb_ary_difference_multi(int argc, VALUE *argv, VALUE ary)
+ary_and(ary1, ary2)
+    VALUE ary1, ary2;
 {
-    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;
-    st_data_t vv;
-    long i;
+    VALUE ary3;
+    int i;
 
     ary2 = to_ary(ary2);
-    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;
-    }
-
-    hash = ary_make_hash(ary2);
-
-    for (i=0; i<RARRAY_LEN(ary1); i++) {
-	v = RARRAY_AREF(ary1, i);
-	vv = (st_data_t)v;
-        if (rb_hash_stlike_delete(hash, &vv, 0)) {
-	    rb_ary_push(ary3, v);
+    ary3 = ary_new();
+    for (i=0; i<RARRAY(ary1)->len; i++) {
+	if (ary_includes(ary2, RARRAY(ary1)->ptr[i])
+	    && !ary_includes(ary3, RARRAY(ary1)->ptr[i])) {
+	    ary_push(ary3, RARRAY(ary1)->ptr[i]);
 	}
     }
-    ary_recycle_hash(hash);
-
     return ary3;
 }
 
-/*
- *  call-seq:
- *    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]
- *
- *  Preserves order from +self+:
- *    [0, 1, 2].intersection([2, 1, 0]) # => [0, 1, 2]
- *
- *  Returns a copy of +self+ if no arguments given.
- *
- *  Related: Array#&.
- */
-
 static VALUE
-rb_ary_intersection_multi(int argc, VALUE *argv, VALUE ary)
+ary_or(ary1, ary2)
+    VALUE ary1, ary2;
 {
-    VALUE result = rb_ary_dup(ary);
+    VALUE ary3;
     int i;
 
-    for (i = 0; i < argc; i++) {
-        result = rb_ary_and(result, argv[i]);
+    if (TYPE(ary2) != T_ARRAY) {
+	if (ary_includes(ary1, ary2)) return ary1;
+	else return ary_plus(ary1, ary2);
     }
 
-    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);
-        }
+    ary3 = ary_new();
+    for (i=0; i<RARRAY(ary1)->len; i++) {
+	if (!ary_includes(ary3, RARRAY(ary1)->ptr[i]))
+		ary_push(ary3, RARRAY(ary1)->ptr[i]);
     }
-}
-
-/*
- *  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;
-
-    ary2 = to_ary(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(ary2)->len; i++) {
+	if (!ary_includes(ary3, RARRAY(ary2)->ptr[i]))
+		ary_push(ary3, RARRAY(ary2)->ptr[i]);
     }
-
-    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;
-	   }
-	}
-    }
-    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)
+ary_uniq_bang(ary)
+    VALUE ary;
 {
-    RUBY_ASSERT(i > 0 && i < RARRAY_LEN(ary));
-
+    VALUE *p, *q, *t, *end;
     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);
-        }
-    }
+    int i;
 
-    return vmin;
-}
+    ary_modify(ary);
+    p = RARRAY(ary)->ptr;
+    end = p + RARRAY(ary)->len;
 
-/*
- *  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;
-	   }
+    while (p < end) {
+	v = *p++;
+	q = t = p;
+	while (q < end) {
+	    if (rb_equal(*q, v)) q++;
+	    else *t++ = *q++;
 	}
+	end = t;
     }
-    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.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;
-    long hash_size;
-
-    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) {
+    if (RARRAY(ary)->len == (end - RARRAY(ary)->ptr)) {
 	return Qnil;
     }
-    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_resize_capa(ary, hash_size);
-    rb_hash_foreach(hash, push_value, ary);
-    ary_recycle_hash(hash);
+
+    RARRAY(ary)->len = (end - RARRAY(ary)->ptr);
 
     return ary;
 }
 
-/*
- *  call-seq:
- *    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_uniq(ary)
+    VALUE ary;
 {
-    VALUE hash, uniq;
+    VALUE v = ary_uniq_bang(ary_dup(ary));
 
-    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);
-    }
-    RBASIC_SET_CLASS(uniq, rb_obj_class(ary));
-    if (hash) {
-        ary_recycle_hash(hash);
-    }
-
-    return uniq;
+    if (NIL_P(v)) return ary;
+    return v;
 }
 
-/*
- *  call-seq:
- *    array.compact! -> self or nil
- *
- *  Removes all +nil+ elements from +self+.
- *
- *  Returns +self+ if any elements removed, otherwise +nil+.
- */
-
 static VALUE
-rb_ary_compact_bang(VALUE ary)
+ary_compact_bang(ary)
+    VALUE ary;
 {
     VALUE *p, *t, *end;
-    long n;
-
-    rb_ary_modify(ary);
-    p = t = (VALUE *)RARRAY_CONST_PTR_TRANSIENT(ary); /* WB: no new reference */
-    end = p + RARRAY_LEN(ary);
 
+    ary_modify(ary);
+    p = t = RARRAY(ary)->ptr;
+    end = p + RARRAY(ary)->len;
     while (t < end) {
 	if (NIL_P(*t)) t++;
 	else *p++ = *t++;
     }
-    n = p - RARRAY_CONST_PTR_TRANSIENT(ary);
-    if (RARRAY_LEN(ary) == n) {
+    if (RARRAY(ary)->len == (p - RARRAY(ary)->ptr)) {
 	return Qnil;
     }
-    ary_resize_smaller(ary, n);
-
-    return ary;
-}
-
-/*
- *  call-seq:
- *    array.compact -> new_array
- *
- *  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
-rb_ary_compact(VALUE ary)
-{
-    ary = rb_ary_dup(ary);
-    rb_ary_compact_bang(ary);
-    return ary;
-}
-
-/*
- *  call-seq:
- *    array.count -> an_integer
- *    array.count(obj) -> an_integer
- *    array.count {|element| ... } -> an_integer
- *
- *  Returns a count of specified elements.
- *
- *  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 i, n = 0;
-
-    if (rb_check_arity(argc, 0, 1) == 0) {
-	VALUE v;
-
-	if (!rb_block_given_p())
-	    return LONG2NUM(RARRAY_LEN(ary));
-
-	for (i = 0; i < RARRAY_LEN(ary); i++) {
-	    v = RARRAY_AREF(ary, i);
-	    if (RTEST(rb_yield(v))) n++;
-	}
-    }
-    else {
-        VALUE obj = 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_AREF(ary, i), obj)) n++;
-	}
-    }
-
-    return LONG2NUM(n);
-}
-
-static VALUE
-flatten(VALUE ary, int level)
-{
-    long i;
-    VALUE stack, result, tmp = 0, elt, vmemo;
-    st_table *memo = 0;
-    st_data_t id;
-
-    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));
-    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_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)) {
-		rb_ary_push(result, elt);
-	    }
-	    else {
-		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);
-		}
-		rb_ary_push(stack, ary);
-		rb_ary_push(stack, LONG2NUM(i));
-		ary = tmp;
-		i = 0;
-	    }
-	}
-	if (RARRAY_LEN(stack) == 0) {
-	    break;
-	}
-	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);
-    }
-
-    if (memo) {
-	st_clear(memo);
-    }
-
-    RBASIC_SET_CLASS(result, rb_obj_class(ary));
-    return result;
-}
-
-/*
- *  call-seq:
- *    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
-rb_ary_flatten_bang(int argc, VALUE *argv, VALUE ary)
-{
-    int mod = 0, level = -1;
-    VALUE result, 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 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 -> 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 level = -1;
-    VALUE result;
-
-    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);
-    if (result == ary) {
-        result = ary_make_shared_copy(ary);
-    }
-
-    return result;
-}
-
-#define RAND_UPTO(max) (long)rb_random_ulong_limited((randgen), (max)-1)
-
-static VALUE
-rb_ary_shuffle_bang(rb_execution_context_t *ec, VALUE ary, VALUE randgen)
-{
-    long i, len;
-
-    rb_ary_modify(ary);
-    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;
-}
-
-static VALUE
-rb_ary_shuffle(rb_execution_context_t *ec, VALUE ary, VALUE randgen)
-{
-    ary = rb_ary_dup(ary);
-    rb_ary_shuffle_bang(ec, ary, randgen);
-    return ary;
-}
-
-static VALUE
-rb_ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE to_array)
-{
-    VALUE result;
-    long n, len, i, j, k, idx[10];
-    long rnds[numberof(idx)];
-    long memo_threshold;
-
-    len = RARRAY_LEN(ary);
-    if (!to_array) {
-	if (len < 2)
-	    i = 0;
-	else
-	    i = RAND_UPTO(len);
-
-	return rb_ary_elt(ary, i);
-    }
-    n = NUM2LONG(nv);
-    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_new_capa(0);
-      case 1:
-	i = rnds[0];
-	return rb_ary_new_from_args(1, RARRAY_AREF(ary, i));
-      case 2:
-	i = rnds[0];
-	j = rnds[1];
-	if (j >= i) j++;
-	return rb_ary_new_from_args(2, RARRAY_AREF(ary, i), RARRAY_AREF(ary, j));
-      case 3:
-	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_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 = rnds[i];
-	    for (j = 0; j < i; ++j) {
-		if (k < sorted[j]) break;
-		++k;
-	    }
-	    memmove(&sorted[j+1], &sorted[j], sizeof(sorted[0])*(i-j));
-	    sorted[j] = idx[i] = k;
-	}
-	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_dup(ary);
-	RBASIC_CLEAR_CLASS(result);
-	RB_GC_GUARD(ary);
-	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:
- *    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;
-
-    rb_check_arity(argc, 0, 1);
-
-    RETURN_SIZED_ENUMERATOR(ary, argc, argv, rb_ary_cycle_size);
-    if (argc == 0 || NIL_P(argv[0])) {
-        n = -1;
-    }
-    else {
-        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_AREF(ary, i));
-        }
-    }
-    return Qnil;
-}
-
-#define tmpary(n) rb_ary_tmp_new(n)
-#define tmpary_discard(a) (ary_discard(a), RBASIC_SET_CLASS_RAW(a, rb_cArray))
-
-/*
- * 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
- * r: the number of elements in each permutation
- * p: the array (of size r) that we're filling in
- * 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(const long n, const long r, long *const p, char *const used, const VALUE values)
-{
-    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 */
-		p[index] = i = 0;
-		continue;
-	    }
-	    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:
- *    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 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]
- *
- *  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)>
- */
+    RARRAY(ary)->len = RARRAY(ary)->capa = (p - RARRAY(ary)->ptr);
+    REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->len);
 
-static VALUE
-rb_ary_permutation(int argc, VALUE *argv, VALUE ary)
-{
-    long r, n, i;
-
-    n = RARRAY_LEN(ary);                  /* Array length */
-    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) {
-	/* 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+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);
-
-	MEMZERO(used, char, n); /* initialize array */
-
-	permute0(n, r, p, used, ary0); /* compute and yield permutations */
-	ALLOCV_END(t0);
-	RBASIC_SET_CLASS_RAW(ary0, rb_cArray);
-    }
     return ary;
 }
 
-static void
-combinate0(const long len, const long n, long *const stack, const VALUE values)
-{
-    long lev = 0;
-
-    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");
-	}
-	do {
-	    if (lev == 0) return;
-	    stack[lev--]++;
-	} while (stack[lev+1]+n == len+lev+1);
-    }
-}
-
-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:
- *    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]
- *
- *  Another example:
- *    a = [0, 1, 2]
- *    a.combination(3) {|combination| p combination }
- *  Output:
- *    [0, 1, 2]
- *
- *  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 i, n, len;
-
-    n = NUM2LONG(num);
-    RETURN_SIZED_ENUMERATOR(ary, 1, &num, rb_ary_combination_size);
-    len = RARRAY_LEN(ary);
-    if (n < 0 || len < n) {
-	/* 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 {
-	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");
-	    }
-	}
-	do {
-	    if (index <= 0) return;
-	} while ((i = ++p[--index]) >= n);
-    }
-}
-
-static VALUE
-rb_ary_repeated_permutation_size(VALUE ary, VALUE args, VALUE eobj)
+ary_compact(ary)
+    VALUE ary;
 {
-    long n = RARRAY_LEN(ary);
-    long k = NUM2LONG(RARRAY_AREF(args, 0));
+    VALUE v = ary_compact_bang(ary_dup(ary));
 
-    if (k < 0) {
-	return LONG2FIX(0);
-    }
-    if (n <= 0) {
-	return LONG2FIX(!k);
-    }
-    return rb_int_positive_pow(n, (unsigned long)k);
+    if (NIL_P(v)) return ary;
+    return v;
 }
 
-/*
- *  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)
+ary_nitems(ary)
+    VALUE ary;
 {
-    long i = 0, index = 0;
+    int n = 0;
+    VALUE *p, *pend;
 
-    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);
+    p = RARRAY(ary)->ptr;
+    pend = p + RARRAY(ary)->len;
+    while (p < pend) {
+	if (!NIL_P(*p)) n++;
+	p++;
     }
+    return INT2FIX(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:
- *    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)
+ary_flatten_bang(ary)
+    VALUE ary;
 {
-    long n, i, len;
+    int i;
+    int mod = 0;
 
-    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)));
+    ary_modify(ary);
+    for (i=0; i<RARRAY(ary)->len; i++) {
+	VALUE ary2 = RARRAY(ary)->ptr[i];
+	if (TYPE(ary2) == T_ARRAY) {
+	    ary_replace(ary, i--, 1, ary2);
+	    mod = 1;
 	}
     }
-    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);
-    }
+    if (mod == 0) return Qnil;
     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 = 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_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;
-
-    /* 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]);
-	}
-    }
-    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);
-	for (j = 0; j < n; j++) {
-	    rb_ary_push(subarray, rb_ary_entry(arrays[j], counters[j]));
-	}
-
-	/* put it on the result array */
-	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
-	 * and increment the one before it.
-	 */
-	m = n-1;
-	counters[m]++;
-	while (counters[m] == RARRAY_LEN(arrays[m])) {
-	    counters[m] = 0;
-	    /* If the first counter overflows, we are done */
-	    if (--m < 0) goto done;
-	    counters[m]++;
-	}
-    }
-done:
-    tmpary_discard(t0);
-    ALLOCV_END(t1);
-
-    return NIL_P(result) ? ary : result;
-}
-
-/*
- *  call-seq:
- *    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
-rb_ary_take(VALUE obj, VALUE n)
-{
-    long len = NUM2LONG(n);
-    if (len < 0) {
-	rb_raise(rb_eArgError, "attempt to take negative size");
-    }
-    return rb_ary_subseq(obj, 0, len);
-}
-
-/*
- *  call-seq:
- *    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
-rb_ary_take_while(VALUE ary)
-{
-    long i;
-
-    RETURN_ENUMERATOR(ary, 0, 0);
-    for (i = 0; i < RARRAY_LEN(ary); i++) {
-	if (!RTEST(rb_yield(RARRAY_AREF(ary, i)))) break;
-    }
-    return rb_ary_take(ary, LONG2FIX(i));
-}
-
-/*
- *  call-seq:
- *    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
-rb_ary_drop(VALUE ary, VALUE n)
-{
-    VALUE result;
-    long pos = NUM2LONG(n);
-    if (pos < 0) {
-	rb_raise(rb_eArgError, "attempt to drop negative size");
-    }
-
-    result = rb_ary_subseq(ary, pos, RARRAY_LEN(ary));
-    if (result == Qnil) result = rb_ary_new();
-    return result;
-}
-
-/*
- *  call-seq:
- *    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
-rb_ary_drop_while(VALUE ary)
-{
-    long i;
-
-    RETURN_ENUMERATOR(ary, 0, 0);
-    for (i = 0; i < RARRAY_LEN(ary); i++) {
-	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) {
-	/* r can be an Integer when mathn is loaded */
-	if (FIXNUM_P(r))
-	    v = rb_fix_plus(r, v);
-	else if (RB_TYPE_P(r, T_BIGNUM))
-	    v = rb_big_plus(r, v);
-	else
-	    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)
+ary_flatten(ary)
+    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;
-
-    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 http://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);
-    }
+    VALUE v = ary_flatten_bang(ary_dup(ary));
 
-    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);
-    }
+    if (NIL_P(v)) return ary;
     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]
- */
+extern VALUE mEnumerable;
 
 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, 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, "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, "==", rb_ary_equal, 1);
-    rb_define_method(rb_cArray, "eql?", rb_ary_eql, 1);
-    rb_define_method(rb_cArray, "hash", rb_ary_hash, 0);
-
-    rb_define_method(rb_cArray, "[]", rb_ary_aref, -1);
-    rb_define_method(rb_cArray, "[]=", rb_ary_aset, -1);
-    rb_define_method(rb_cArray, "at", rb_ary_at, 1);
-    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_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, "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);
-    rb_define_method(rb_cArray, "rindex", rb_ary_rindex, -1);
-    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);
-    rb_define_method(rb_cArray, "delete_if", rb_ary_delete_if, 0);
-    rb_define_method(rb_cArray, "reject", rb_ary_reject, 0);
-    rb_define_method(rb_cArray, "reject!", rb_ary_reject_bang, 0);
-    rb_define_method(rb_cArray, "zip", rb_ary_zip, -1);
-    rb_define_method(rb_cArray, "transpose", rb_ary_transpose, 0);
-    rb_define_method(rb_cArray, "replace", rb_ary_replace, 1);
-    rb_define_method(rb_cArray, "clear", rb_ary_clear, 0);
-    rb_define_method(rb_cArray, "fill", rb_ary_fill, -1);
-    rb_define_method(rb_cArray, "include?", rb_ary_includes, 1);
-    rb_define_method(rb_cArray, "<=>", rb_ary_cmp, 1);
-
-    rb_define_method(rb_cArray, "slice", rb_ary_aref, -1);
-    rb_define_method(rb_cArray, "slice!", rb_ary_slice_bang, -1);
-
-    rb_define_method(rb_cArray, "assoc", rb_ary_assoc, 1);
-    rb_define_method(rb_cArray, "rassoc", rb_ary_rassoc, 1);
-
-    rb_define_method(rb_cArray, "+", rb_ary_plus, 1);
-    rb_define_method(rb_cArray, "*", rb_ary_times, 1);
-
-    rb_define_method(rb_cArray, "-", rb_ary_diff, 1);
-    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);
-    rb_define_method(rb_cArray, "compact!", rb_ary_compact_bang, 0);
-    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, "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);
-
-    rb_define_method(rb_cArray, "deconstruct", rb_ary_deconstruct, 0);
+Init_Array()
+{
+    cArray  = rb_define_class("Array", cObject);
+    rb_include_module(cArray, mEnumerable);
+
+    rb_define_singleton_method(cArray, "new", ary_s_new, -1);
+    rb_define_singleton_method(cArray, "[]", ary_s_create, -1);
+    rb_define_method(cArray, "to_s", ary_to_s, 0);
+    rb_define_method(cArray, "inspect", ary_inspect, 0);
+    rb_define_method(cArray, "to_a", ary_to_a, 0);
+    rb_define_method(cArray, "to_ary", ary_to_a, 0);
+
+    rb_define_method(cArray, "freeze",  ary_freeze, 0);
+    rb_define_method(cArray, "frozen?",  ary_frozen_p, 0);
+
+    rb_define_method(cArray, "==", ary_equal, 1);
+    rb_define_method(cArray, "eql?", ary_eql, 1);
+    rb_define_method(cArray, "hash", ary_hash, 0);
+
+    rb_define_method(cArray, "[]", ary_aref, -1);
+    rb_define_method(cArray, "[]=", ary_aset, -1);
+    rb_define_method(cArray, "concat", ary_concat, 1);
+    rb_define_method(cArray, "<<", ary_push, 1);
+    rb_define_method(cArray, "push", ary_push_method, -1);
+    rb_define_method(cArray, "pop", ary_pop, 0);
+    rb_define_method(cArray, "shift", ary_shift, 0);
+    rb_define_method(cArray, "unshift", ary_unshift, 1);
+    rb_define_method(cArray, "each", ary_each, 0);
+    rb_define_method(cArray, "each_index", ary_each_index, 0);
+    rb_define_method(cArray, "reverse_each", ary_reverse_each, 0);
+    rb_define_method(cArray, "length", ary_length, 0);
+    rb_define_alias(cArray,  "size", "length");
+    rb_define_method(cArray, "empty?", ary_empty_p, 0);
+    rb_define_method(cArray, "index", ary_index, 1);
+    rb_define_method(cArray, "rindex", ary_rindex, 1);
+    rb_define_method(cArray, "indexes", ary_indexes, -1);
+    rb_define_method(cArray, "indices", ary_indexes, -1);
+    rb_define_method(cArray, "clone", ary_clone, 0);
+    rb_define_method(cArray, "dup", ary_dup, 0);
+    rb_define_method(cArray, "join", ary_join_method, -1);
+    rb_define_method(cArray, "reverse", ary_reverse_method, 0);
+    rb_define_method(cArray, "reverse!", ary_reverse, 0);
+    rb_define_method(cArray, "sort", ary_sort, 0);
+    rb_define_method(cArray, "sort!", ary_sort_bang, 0);
+    rb_define_method(cArray, "delete", ary_delete, 1);
+    rb_define_method(cArray, "delete_at", ary_delete_at, 1);
+    rb_define_method(cArray, "delete_if", ary_delete_if, 0);
+    rb_define_method(cArray, "filter", ary_filter, 0);
+    rb_define_method(cArray, "replace", ary_replace_method, 1);
+    rb_define_method(cArray, "clear", ary_clear, 0);
+    rb_define_method(cArray, "fill", ary_fill, -1);
+    rb_define_method(cArray, "include?", ary_includes, 1);
+    rb_define_method(cArray, "===", ary_includes, 1);
+    rb_define_method(cArray, "<=>", ary_cmp, 1);
+
+    rb_define_method(cArray, "assoc", ary_assoc, 1);
+    rb_define_method(cArray, "rassoc", ary_rassoc, 1);
+
+    rb_define_method(cArray, "+", ary_plus, 1);
+    rb_define_method(cArray, "*", ary_times, 1);
+
+    rb_define_method(cArray, "-", ary_diff, 1);
+    rb_define_method(cArray, "&", ary_and, 1);
+    rb_define_method(cArray, "|", ary_or, 1);
+
+    rb_define_method(cArray, "uniq", ary_uniq, 0);
+    rb_define_method(cArray, "uniq!", ary_uniq_bang, 0);
+    rb_define_method(cArray, "compact", ary_compact, 0);
+    rb_define_method(cArray, "compact!", ary_compact_bang, 0);
+    rb_define_method(cArray, "flatten", ary_flatten, 0);
+    rb_define_method(cArray, "flatten!", ary_flatten_bang, 0);
+    rb_define_method(cArray, "nitems", ary_nitems, 0);
+
+    cmp = rb_intern("<=>");
 }
-
-#include "array.rbinc"
diff --git a/array.rb b/array.rb
deleted file mode 100644
index 36f4f0afa5..0000000000
--- a/array.rb
+++ /dev/null
@@ -1,59 +0,0 @@
-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]
-  #
-  # 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]
-  #
-  # 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 (but not keyword argument +random+),
-  # 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
deleted file mode 100644
index 87c366550e..0000000000
--- a/ast.c
+++ /dev/null
@@ -1,693 +0,0 @@
-/* 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:
-        return rb_ary_new_from_args(3, node->nd_lit,
-                                    NEW_CHILD(ast, node->nd_next->nd_head),
-                                    NEW_CHILD(ast, node->nd_next->nd_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
deleted file mode 100644
index 34fa645671..0000000000
--- a/ast.rb
+++ /dev/null
@@ -1,146 +0,0 @@
-# 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/basictest/runner.rb b/basictest/runner.rb
deleted file mode 100755
index 0f398e7acc..0000000000
--- a/basictest/runner.rb
+++ /dev/null
@@ -1,33 +0,0 @@
-#! ./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($stdout)
-error = ''
-
-srcdir = File.expand_path('..', File.dirname(__FILE__))
-if env = ENV["RUBYOPT"]
-  ENV["RUBYOPT"] = env + " -W1"
-end
-`#{ruby} #{opt} -W1 #{srcdir}/basictest/test.rb #{ARGV.join(' ')}`.each_line do |line|
-  if line =~ /^end of test/
-    print "\ntest succeeded\n"
-    exit true
-  end
-  error << line if %r:^(basictest/test.rb|not): =~ line
-end
-puts
-print error
-print "test failed\n"
-exit false
diff --git a/basictest/test.rb b/basictest/test.rb
deleted file mode 100755
index 52008b78db..0000000000
--- a/basictest/test.rb
+++ /dev/null
@@ -1,2364 +0,0 @@
-#! /usr/bin/env ruby
-# -*- coding: us-ascii -*-
-
-$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
deleted file mode 100644
index 39a5aa139b..0000000000
--- a/benchmark/README.md
+++ /dev/null
@@ -1,72 +0,0 @@
-# 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/app_answer.rb b/benchmark/app_answer.rb
deleted file mode 100644
index 3cd8a8fd37..0000000000
--- a/benchmark/app_answer.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-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
-
-def the_answer_to_life_the_universe_and_everything
-  (ack(3,7).to_s.split(//).inject(0){|s,x| s+x.to_i}.to_s + "2" ).to_i
-end
-
-answer = the_answer_to_life_the_universe_and_everything
diff --git a/benchmark/app_aobench.rb b/benchmark/app_aobench.rb
deleted file mode 100644
index 16296af12b..0000000000
--- a/benchmark/app_aobench.rb
+++ /dev/null
@@ -1,297 +0,0 @@
-# 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
deleted file mode 100644
index 31e29b7644..0000000000
--- a/benchmark/app_erb.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-#
-# 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
deleted file mode 100644
index 45f471dfdb..0000000000
--- a/benchmark/app_factorial.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-def fact(n)
-  if(n > 1)
-    n * fact(n-1)
-  else
-    1
-  end
-end
-
-100.times {
-  fact(5000)
-}
diff --git a/benchmark/app_fib.rb b/benchmark/app_fib.rb
deleted file mode 100644
index 34a7b2e725..0000000000
--- a/benchmark/app_fib.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-def fib n
-  if n < 3
-    1
-  else
-    fib(n-1) + fib(n-2)
-  end
-end
-
-fib(34)
-
diff --git a/benchmark/app_lc_fizzbuzz.rb b/benchmark/app_lc_fizzbuzz.rb
deleted file mode 100644
index f09574bbeb..0000000000
--- a/benchmark/app_lc_fizzbuzz.rb
+++ /dev/null
@@ -1,52 +0,0 @@
-#
-# 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
deleted file mode 100644
index 801b75e8e2..0000000000
--- a/benchmark/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..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
deleted file mode 100644
index 47be7b203f..0000000000
--- a/benchmark/app_pentomino.rb
+++ /dev/null
@@ -1,130 +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)
diff --git a/benchmark/app_raise.rb b/benchmark/app_raise.rb
deleted file mode 100644
index 5db8f95d50..0000000000
--- a/benchmark/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/app_strconcat.rb b/benchmark/app_strconcat.rb
deleted file mode 100644
index 7eed7c1aed..0000000000
--- a/benchmark/app_strconcat.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-i = 0
-while i<2_000_000
-  "#{1+1} #{1+1} #{1+1}"
-  i += 1
-end
diff --git a/benchmark/app_tak.rb b/benchmark/app_tak.rb
deleted file mode 100644
index efe5380f4e..0000000000
--- a/benchmark/app_tak.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-
-def tak x, y, z
-  unless y < x
-    z
-  else
-    tak( tak(x-1, y, z),
-         tak(y-1, z, x),
-         tak(z-1, x, y))
-  end
-end
-
-tak(18, 9, 0)
-
diff --git a/benchmark/app_tarai.rb b/benchmark/app_tarai.rb
deleted file mode 100644
index 4c146f5ccf..0000000000
--- a/benchmark/app_tarai.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-def tarai( x, y, z )
-  if x <= y
-  then y
-  else tarai(tarai(x-1, y, z),
-             tarai(y-1, z, x),
-             tarai(z-1, x, y))
-  end
-end
-
-tarai(12, 6, 0)
diff --git a/benchmark/app_uri.rb b/benchmark/app_uri.rb
deleted file mode 100644
index 586edfd5dc..0000000000
--- a/benchmark/app_uri.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-require 'uri'
-
-100_000.times{
-  uri = URI.parse('http://www.ruby-lang.org')
-  uri.scheme
-  uri.host
-  uri.port
-}
diff --git a/benchmark/array_flatten.yml b/benchmark/array_flatten.yml
deleted file mode 100644
index 88ef544ba0..0000000000
--- a/benchmark/array_flatten.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-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
deleted file mode 100644
index 26705323fd..0000000000
--- a/benchmark/array_intersection.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-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
deleted file mode 100644
index ace1ae2e14..0000000000
--- a/benchmark/array_max_float.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-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
deleted file mode 100644
index acd83684d0..0000000000
--- a/benchmark/array_max_int.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-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
deleted file mode 100644
index 2aeed010f2..0000000000
--- a/benchmark/array_max_str.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-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
deleted file mode 100644
index 53e5072b14..0000000000
--- a/benchmark/array_min.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-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
deleted file mode 100644
index 5f41ecc32b..0000000000
--- a/benchmark/array_sample_100k_10.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 18b1715319..0000000000
--- a/benchmark/array_sample_100k_11.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 22863afe89..0000000000
--- a/benchmark/array_sample_100k__100.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 4cd79e6c67..0000000000
--- a/benchmark/array_sample_100k__1k.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index b3d264249e..0000000000
--- a/benchmark/array_sample_100k__6k.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 5dd55ec058..0000000000
--- a/benchmark/array_sample_100k___10k.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 1506732c3c..0000000000
--- a/benchmark/array_sample_100k___50k.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-arr = [*0...100000]
-10_000.times {arr.sample 50_000}
diff --git a/benchmark/array_shift.rb b/benchmark/array_shift.rb
deleted file mode 100644
index 798bb9e3f4..0000000000
--- a/benchmark/array_shift.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-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
deleted file mode 100644
index e53a6edae6..0000000000
--- a/benchmark/array_small_and.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-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
deleted file mode 100644
index 9661ee48db..0000000000
--- a/benchmark/array_small_diff.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-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
deleted file mode 100644
index c58b5fd1ff..0000000000
--- a/benchmark/array_small_or.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-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
deleted file mode 100644
index 3579786056..0000000000
--- a/benchmark/array_sort_block.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 9a6e2f8bd2..0000000000
--- a/benchmark/array_sort_float.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 6cb394cb9f..0000000000
--- a/benchmark/array_values_at_int.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 5b53806d1c..0000000000
--- a/benchmark/array_values_at_range.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-ary = Array.new(10000) {|i| i}
-100000.times { ary.values_at(1..2000) }
diff --git a/benchmark/bighash.rb b/benchmark/bighash.rb
deleted file mode 100644
index e2ad5a5c94..0000000000
--- a/benchmark/bighash.rb
+++ /dev/null
@@ -1 +0,0 @@
-h = {}; 5000000.times {|n| h[n] = n }
diff --git a/benchmark/cgi_escape_html.yml b/benchmark/cgi_escape_html.yml
deleted file mode 100644
index af6abd08ac..0000000000
--- a/benchmark/cgi_escape_html.yml
+++ /dev/null
@@ -1,40 +0,0 @@
-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
deleted file mode 100644
index d0150c5e5b..0000000000
--- a/benchmark/complex_float_add.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index b9f5e1d51c..0000000000
--- a/benchmark/complex_float_div.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 59b096a6dc..0000000000
--- a/benchmark/complex_float_mul.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 6fcde3125b..0000000000
--- a/benchmark/complex_float_new.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index c40a31ab55..0000000000
--- a/benchmark/complex_float_power.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 3fafe7cdbe..0000000000
--- a/benchmark/complex_float_sub.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 8329c757cf..0000000000
--- a/benchmark/dir_empty_p.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-require 'tmpdir'
-max = 100_000
-Dir.mktmpdir('bm_dir_empty_p') do |dir|
-  max.times { Dir.empty?(dir) }
-end
diff --git a/benchmark/enum_lazy_flat_map.yml b/benchmark/enum_lazy_flat_map.yml
deleted file mode 100644
index 0ee390a441..0000000000
--- a/benchmark/enum_lazy_flat_map.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-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
deleted file mode 100644
index 8832392e65..0000000000
--- a/benchmark/enum_lazy_grep_v_100.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 329509fa8f..0000000000
--- a/benchmark/enum_lazy_grep_v_20.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 02ea4d4e71..0000000000
--- a/benchmark/enum_lazy_grep_v_50.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 2e6434d9c4..0000000000
--- a/benchmark/enum_lazy_uniq_100.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 75e6398fee..0000000000
--- a/benchmark/enum_lazy_uniq_20.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 59a39b78ff..0000000000
--- a/benchmark/enum_lazy_uniq_50.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 4566ff0261..0000000000
--- a/benchmark/enum_lazy_zip.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index 15f6c3880b..0000000000
--- a/benchmark/erb_render.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-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
deleted file mode 100644
index a36c759f8e..0000000000
--- a/benchmark/fiber_chain.yml
+++ /dev/null
@@ -1,36 +0,0 @@
-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
deleted file mode 100644
index 8588686477..0000000000
--- a/benchmark/fiber_locals.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 1cd4760c9d..0000000000
--- a/benchmark/file_chmod.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-# 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
deleted file mode 100644
index bbb44aebac..0000000000
--- a/benchmark/file_rename.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-# 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
deleted file mode 100644
index 275f58b924..0000000000
--- a/benchmark/gc/aobench.rb
+++ /dev/null
@@ -1 +0,0 @@
-require_relative '../app_aobench'
diff --git a/benchmark/gc/binary_trees.rb b/benchmark/gc/binary_trees.rb
deleted file mode 100644
index 83347cdd20..0000000000
--- a/benchmark/gc/binary_trees.rb
+++ /dev/null
@@ -1 +0,0 @@
-require_relative '../so_binary_trees'
diff --git a/benchmark/gc/gcbench.rb b/benchmark/gc/gcbench.rb
deleted file mode 100644
index 23d0b91c6c..0000000000
--- a/benchmark/gc/gcbench.rb
+++ /dev/null
@@ -1,57 +0,0 @@
-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
deleted file mode 100644
index cb030d458d..0000000000
--- a/benchmark/gc/hash1.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-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
deleted file mode 100644
index e8c943fb21..0000000000
--- a/benchmark/gc/hash2.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index c05a79f561..0000000000
--- a/benchmark/gc/null.rb
+++ /dev/null
@@ -1 +0,0 @@
-# null
diff --git a/benchmark/gc/pentomino.rb b/benchmark/gc/pentomino.rb
deleted file mode 100644
index 8ebdff7d1d..0000000000
--- a/benchmark/gc/pentomino.rb
+++ /dev/null
@@ -1 +0,0 @@
-require_relative '../app_pentomino'
diff --git a/benchmark/gc/rdoc.rb b/benchmark/gc/rdoc.rb
deleted file mode 100644
index 14c89f5611..0000000000
--- a/benchmark/gc/rdoc.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index c66290140a..0000000000
--- a/benchmark/gc/redblack.rb
+++ /dev/null
@@ -1,366 +0,0 @@
-# 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
deleted file mode 100644
index be2c7b7250..0000000000
--- a/benchmark/gc/ring.rb
+++ /dev/null
@@ -1,29 +0,0 @@
-# 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
deleted file mode 100644
index af4f8c36d4..0000000000
--- a/benchmark/hash_aref_dsym.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 9d7759379e..0000000000
--- a/benchmark/hash_aref_dsym_long.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-# [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
deleted file mode 100644
index 1346890582..0000000000
--- a/benchmark/hash_aref_fix.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 2217274c82..0000000000
--- a/benchmark/hash_aref_flo.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index b0913dd4bb..0000000000
--- a/benchmark/hash_aref_miss.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-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
deleted file mode 100644
index 19439b061b..0000000000
--- a/benchmark/hash_aref_str.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index f75d163fe6..0000000000
--- a/benchmark/hash_aref_sym.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index 9dab8df7be..0000000000
--- a/benchmark/hash_aref_sym_long.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index 833f10e1c7..0000000000
--- a/benchmark/hash_defaults.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index 65f521ec94..0000000000
--- a/benchmark/hash_dup.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index e944aae9f2..0000000000
--- a/benchmark/hash_flatten.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index 0c7edfed3e..0000000000
--- a/benchmark/hash_ident_flo.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index b226736c6f..0000000000
--- a/benchmark/hash_ident_num.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 4b3b58edec..0000000000
--- a/benchmark/hash_ident_obj.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 8582b38e31..0000000000
--- a/benchmark/hash_ident_str.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 4c81e3d28e..0000000000
--- a/benchmark/hash_ident_sym.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 6863cd01f9..0000000000
--- a/benchmark/hash_keys.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index c188529260..0000000000
--- a/benchmark/hash_literal_small2.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-# 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
deleted file mode 100644
index 739f71b5b0..0000000000
--- a/benchmark/hash_literal_small4.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-# 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
deleted file mode 100644
index 53d80af535..0000000000
--- a/benchmark/hash_literal_small8.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-# 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
deleted file mode 100644
index 03d9109602..0000000000
--- a/benchmark/hash_long.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index a645671a5b..0000000000
--- a/benchmark/hash_shift.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index ec800d0342..0000000000
--- a/benchmark/hash_shift_u16.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index de4e0fa696..0000000000
--- a/benchmark/hash_shift_u24.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index 656aa55583..0000000000
--- a/benchmark/hash_shift_u32.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index 45485d9c71..0000000000
--- a/benchmark/hash_small2.rb
+++ /dev/null
@@ -1 +0,0 @@
-1000000.times.map{|i| a={}; 2.times{|j| a[j]=j}; a}
diff --git a/benchmark/hash_small4.rb b/benchmark/hash_small4.rb
deleted file mode 100644
index acd4084334..0000000000
--- a/benchmark/hash_small4.rb
+++ /dev/null
@@ -1 +0,0 @@
-1000000.times.map{|i| a={}; 4.times{|j| a[j]=j}; a}
diff --git a/benchmark/hash_small8.rb b/benchmark/hash_small8.rb
deleted file mode 100644
index 9cffcc91b6..0000000000
--- a/benchmark/hash_small8.rb
+++ /dev/null
@@ -1 +0,0 @@
-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
deleted file mode 100644
index 2b675bf509..0000000000
--- a/benchmark/hash_to_proc.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index 069441302f..0000000000
--- a/benchmark/hash_values.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index e22a3f8c30..0000000000
--- a/benchmark/int_quo.rb
+++ /dev/null
@@ -1 +0,0 @@
-5000000.times { 42.quo(3) }
diff --git a/benchmark/io_copy_stream_write.rb b/benchmark/io_copy_stream_write.rb
deleted file mode 100644
index 3fd87250a4..0000000000
--- a/benchmark/io_copy_stream_write.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-# 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
deleted file mode 100644
index 11f369bd0d..0000000000
--- a/benchmark/io_copy_stream_write_socket.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-# 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
deleted file mode 100644
index 2f205c1333..0000000000
--- a/benchmark/io_file_create.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-#
-# 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
deleted file mode 100644
index b9e796ed30..0000000000
--- a/benchmark/io_file_read.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-#
-# 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
deleted file mode 100644
index aa1be0e5fe..0000000000
--- a/benchmark/io_file_write.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-#
-# 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
deleted file mode 100644
index da9357fdc6..0000000000
--- a/benchmark/io_nonblock_noex.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index 56819d049b..0000000000
--- a/benchmark/io_nonblock_noex2.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-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
deleted file mode 100644
index 6862a8ae61..0000000000
--- a/benchmark/io_pipe_rw.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-# 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
deleted file mode 100644
index 19248daeb1..0000000000
--- a/benchmark/io_select.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-# 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
deleted file mode 100644
index 10e37d71b2..0000000000
--- a/benchmark/io_select2.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-# 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
deleted file mode 100644
index 7d0ba1f092..0000000000
--- a/benchmark/io_select3.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-# 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
deleted file mode 100644
index ebdc8d7e8b..0000000000
--- a/benchmark/irb_color.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index 28933f8b38..0000000000
--- a/benchmark/irb_exec.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index 069b23abcd..0000000000
--- a/benchmark/kernel_clone.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index 215f6750fc..0000000000
--- a/benchmark/kernel_float.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-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
deleted file mode 100644
index 4dcbb31b4d..0000000000
--- a/benchmark/kernel_tap.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index 85f7341e33..0000000000
--- a/benchmark/kernel_then.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index fce6bce0b8..0000000000
--- a/benchmark/keyword_arguments.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index d22236e9fb..0000000000
--- a/benchmark/lib/benchmark_driver/output/driver.rb
+++ /dev/null
@@ -1,36 +0,0 @@
-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
deleted file mode 100644
index 3c3453e527..0000000000
--- a/benchmark/lib/benchmark_driver/runner/cstime.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index e139962ef2..0000000000
--- a/benchmark/lib/benchmark_driver/runner/cutime.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index 1d4693e8be..0000000000
--- a/benchmark/lib/benchmark_driver/runner/mjit.rb
+++ /dev/null
@@ -1,34 +0,0 @@
-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
deleted file mode 100644
index 9f7c8c8af3..0000000000
--- a/benchmark/lib/benchmark_driver/runner/mjit_exec.rb
+++ /dev/null
@@ -1,237 +0,0 @@
-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 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 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 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
deleted file mode 100644
index d04f2e51ff..0000000000
--- a/benchmark/lib/benchmark_driver/runner/peak.rb
+++ /dev/null
@@ -1,151 +0,0 @@
-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
deleted file mode 100644
index 1b31f901c7..0000000000
--- a/benchmark/lib/benchmark_driver/runner/size.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-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
deleted file mode 100644
index 4577fb0bf8..0000000000
--- a/benchmark/lib/benchmark_driver/runner/stime.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index 64dc14f84e..0000000000
--- a/benchmark/lib/benchmark_driver/runner/total.rb
+++ /dev/null
@@ -1,137 +0,0 @@
-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
deleted file mode 100644
index b61d83a188..0000000000
--- a/benchmark/lib/benchmark_driver/runner/utime.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index 31b770c484..0000000000
--- a/benchmark/lib/load.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-# 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/loop_for.rb b/benchmark/loop_for.rb
deleted file mode 100644
index 0fc4cc1511..0000000000
--- a/benchmark/loop_for.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-for i in 1..30_000_000
-  #
-end
diff --git a/benchmark/loop_generator.rb b/benchmark/loop_generator.rb
deleted file mode 100644
index d3375c744c..0000000000
--- a/benchmark/loop_generator.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-max = 600000
-
-if defined? Fiber
-  gen = (1..max).each
-  loop do
-    gen.next
-  end
-else
-  require 'generator'
-  gen = Generator.new((0..max))
-  while gen.next?
-    gen.next
-  end
-end
diff --git a/benchmark/loop_times.rb b/benchmark/loop_times.rb
deleted file mode 100644
index 521f72ad1a..0000000000
--- a/benchmark/loop_times.rb
+++ /dev/null
@@ -1 +0,0 @@
-30_000_000.times{|e|}
diff --git a/benchmark/loop_whileloop.rb b/benchmark/loop_whileloop.rb
deleted file mode 100644
index 0072822c06..0000000000
--- a/benchmark/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/loop_whileloop2.rb b/benchmark/loop_whileloop2.rb
deleted file mode 100644
index 47d02dffc4..0000000000
--- a/benchmark/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/marshal_dump_flo.rb b/benchmark/marshal_dump_flo.rb
deleted file mode 100644
index 9b8d0c6afb..0000000000
--- a/benchmark/marshal_dump_flo.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 8252ad90fa..0000000000
--- a/benchmark/marshal_dump_load_geniv.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index e29743b791..0000000000
--- a/benchmark/marshal_dump_load_time.rb
+++ /dev/null
@@ -1 +0,0 @@
-100000.times { Marshal.load(Marshal.dump(Time.now)) }
diff --git a/benchmark/match_gt4.rb b/benchmark/match_gt4.rb
deleted file mode 100644
index ffda109912..0000000000
--- a/benchmark/match_gt4.rb
+++ /dev/null
@@ -1 +0,0 @@
-1000000.times { /(.)(.)(\d+)(\d)/.match("THX1138.") }
diff --git a/benchmark/match_small.rb b/benchmark/match_small.rb
deleted file mode 100644
index 3b743d484a..0000000000
--- a/benchmark/match_small.rb
+++ /dev/null
@@ -1 +0,0 @@
-1000000.times { 'haystack'.match(/hay/) }
diff --git a/benchmark/mjit_exec_jt2jt.yml b/benchmark/mjit_exec_jt2jt.yml
deleted file mode 100644
index 6c303c7a44..0000000000
--- a/benchmark/mjit_exec_jt2jt.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index 764883f070..0000000000
--- a/benchmark/mjit_exec_vm2jt.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index 030aa76c1c..0000000000
--- a/benchmark/mjit_exec_vm2vm.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index 2584fa6410..0000000000
--- a/benchmark/mjit_exivar.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-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
deleted file mode 100644
index cd3288978b..0000000000
--- a/benchmark/mjit_integer.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-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_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_zero?(int)      int.zero?      end
-
-benchmark:
-  - mjit_abs(-1)
-  - mjit_bit_length(100)
-  - mjit_even?(2)
-  - mjit_integer?(0)
-  - mjit_magnitude(-1)
-  - mjit_odd?(1)
-  - mjit_ord(1)
-  - mjit_to_i(1)
-  - mjit_to_int(1)
-  - mjit_zero?(0)
-
-loop_count: 40000000
diff --git a/benchmark/mjit_kernel.yml b/benchmark/mjit_kernel.yml
deleted file mode 100644
index 7720e65c2c..0000000000
--- a/benchmark/mjit_kernel.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-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
deleted file mode 100644
index 9ac68b164b..0000000000
--- a/benchmark/mjit_leave.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index fed6d34bd5..0000000000
--- a/benchmark/mjit_opt_cc_insns.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-# 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
deleted file mode 100644
index bfba1323f2..0000000000
--- a/benchmark/mjit_struct_aref.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index 79ba4f2177..0000000000
--- a/benchmark/nil_p.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index 2195963433..0000000000
--- a/benchmark/num_zero_p.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-benchmark:
-  - 0.zero?
-  - 1.zero?
-  - 0r.zero?
-  - 1r.zero?
-  - 0i.zero?
-  - 1i.zero?
-loop_count: 50000000
diff --git a/benchmark/objspace_dump_all.yml b/benchmark/objspace_dump_all.yml
deleted file mode 100644
index ebab562d2e..0000000000
--- a/benchmark/objspace_dump_all.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-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/ack.pl b/benchmark/other-lang/ack.pl
deleted file mode 100644
index 201e22ddfa..0000000000
--- a/benchmark/other-lang/ack.pl
+++ /dev/null
@@ -1,11 +0,0 @@
-use integer;
-
-sub Ack {
-    return $_[0] ? ($_[1] ? Ack($_[0]-1, Ack($_[0], $_[1]-1))
-		    : Ack($_[0]-1, 1))
-	: $_[1]+1;
-}
-
-my $NUM = 9;
-$NUM = 1 if ($NUM < 1);
-my $ack = Ack(3, $NUM);
diff --git a/benchmark/other-lang/ack.py b/benchmark/other-lang/ack.py
deleted file mode 100644
index 9968e7cfcf..0000000000
--- a/benchmark/other-lang/ack.py
+++ /dev/null
@@ -1,16 +0,0 @@
-import sys
-sys.setrecursionlimit(5000000)
-
-def Ack(M, N):
-    if (not M):
-        return( N + 1 )
-    if (not N):
-        return( Ack(M-1, 1) )
-    return( Ack(M-1, Ack(M, N-1)) )
-
-def main():
-    NUM = 9
-    sys.setrecursionlimit(10000)
-    Ack(3, NUM)
-
-main()
diff --git a/benchmark/other-lang/ack.rb b/benchmark/other-lang/ack.rb
deleted file mode 100644
index 7451bed6c4..0000000000
--- a/benchmark/other-lang/ack.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-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/other-lang/ack.scm b/benchmark/other-lang/ack.scm
deleted file mode 100644
index a80b73ba55..0000000000
--- a/benchmark/other-lang/ack.scm
+++ /dev/null
@@ -1,7 +0,0 @@
-(define (ack m n)
-  (cond ((zero? m) (+ n 1))
-	((zero? n) (ack (- m 1) 1))
-	(else      (ack (- m 1) (ack m (- n 1))))))
-
-(ack 3 9)
-
diff --git a/benchmark/other-lang/eval.rb b/benchmark/other-lang/eval.rb
deleted file mode 100644
index 48a2cea019..0000000000
--- a/benchmark/other-lang/eval.rb
+++ /dev/null
@@ -1,66 +0,0 @@
-
-Bench = %w(
-  loop
-  ack
-  fib
-  tak
-  fact
-)
-
-Lang = <<EOP.map{|l| l.strip}
-  ruby-cyg
-  ../../../test6/miniruby
-  perl
-  python
-  gosh
-EOP
-
-Bench.replace ['loop2']
-Lang.replace ['ruby-cyg']
-
-Ext = %w(
-  .rb
-  .rb
-  .pl
-  .py
-  .scm
-)
-
-p Bench
-p Lang
-
-require 'benchmark'
-
-def bench cmd
-  m = Benchmark.measure{
-    #p cmd
-    system(cmd)
-  }
-  [m.utime, m.real]
-end
-
-Result = []
-Bench.each{|b|
-  r = []
-  Lang.each_with_index{|l, idx|
-    cmd = "#{l} #{b}#{Ext[idx]}"
-    r << bench(cmd)
-  }
-  Result << r
-}
-
-require 'pp'
-# utime
-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")
-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.pl b/benchmark/other-lang/fact.pl
deleted file mode 100644
index a9b0b69cdf..0000000000
--- a/benchmark/other-lang/fact.pl
+++ /dev/null
@@ -1,13 +0,0 @@
-sub fact{
-  my $n = @_[0];
-  if($n < 2){
-    return 1;
-  }
-  else{
-    return $n * fact($n-1);
-  }
-}
-
-for($i=0; $i<10000; $i++){
-  &fact(100);
-}
diff --git a/benchmark/other-lang/fact.py b/benchmark/other-lang/fact.py
deleted file mode 100644
index 1ce9f76275..0000000000
--- a/benchmark/other-lang/fact.py
+++ /dev/null
@@ -1,18 +0,0 @@
-#import sys
-#sys.setrecursionlimit(1000)
-
-def factL(n):
-	r = 1
-	for x in range(2, n+1):
-		r *= x
-	return r
-
-def factR(n):
-	if n < 2:
-		return 1
-	else:
-		return n * factR(n-1)
-
-for i in range(10000):
-	factR(100)
-
diff --git a/benchmark/other-lang/fact.rb b/benchmark/other-lang/fact.rb
deleted file mode 100644
index 6cedc752cd..0000000000
--- a/benchmark/other-lang/fact.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-def fact(n)
-  if n < 2
-    1
-  else
-    n * fact(n-1)
-  end
-end
-
-i = 0
-while i<10000
-  i += 1
-  fact(100)
-end
diff --git a/benchmark/other-lang/fact.scm b/benchmark/other-lang/fact.scm
deleted file mode 100644
index c98a7fedd3..0000000000
--- a/benchmark/other-lang/fact.scm
+++ /dev/null
@@ -1,8 +0,0 @@
-(define (fact n)
-        (if (< n 2)
-            1
-          (* n (fact (- n 1)))))
-
-(dotimes (i 10000)
-  (fact 100))
-
diff --git a/benchmark/other-lang/fib.pl b/benchmark/other-lang/fib.pl
deleted file mode 100644
index a46f666d1e..0000000000
--- a/benchmark/other-lang/fib.pl
+++ /dev/null
@@ -1,11 +0,0 @@
-sub fib{
-  my $n = $_[0];
-  if($n < 3){
-    return 1;
-  }
-  else{
-    return fib($n-1) + fib($n-2);
-  }
-};
-
-&fib(34);
diff --git a/benchmark/other-lang/fib.py b/benchmark/other-lang/fib.py
deleted file mode 100644
index 45f2bceb8d..0000000000
--- a/benchmark/other-lang/fib.py
+++ /dev/null
@@ -1,7 +0,0 @@
-def fib(n):
-  if n < 3:
-    return 1
-  else:
-    return fib(n-1) + fib(n-2)
-
-fib(34)
diff --git a/benchmark/other-lang/fib.rb b/benchmark/other-lang/fib.rb
deleted file mode 100644
index ec587eabe0..0000000000
--- a/benchmark/other-lang/fib.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-def fib n
-  if n < 3
-    1
-  else
-    fib(n-1) + fib(n-2)
-  end
-end
-
-fib(34)
diff --git a/benchmark/other-lang/fib.scm b/benchmark/other-lang/fib.scm
deleted file mode 100644
index 2fc4e225bd..0000000000
--- a/benchmark/other-lang/fib.scm
+++ /dev/null
@@ -1,7 +0,0 @@
-(define (fib n)
-        (if (< n 3)
-            1
-          (+ (fib (- n 1)) (fib (- n 2)))))
-
-(fib 34)
-
diff --git a/benchmark/other-lang/loop.pl b/benchmark/other-lang/loop.pl
deleted file mode 100644
index 2777490aaa..0000000000
--- a/benchmark/other-lang/loop.pl
+++ /dev/null
@@ -1,3 +0,0 @@
-for($i=0; $i<30000000; $i++){
-}
-
diff --git a/benchmark/other-lang/loop.py b/benchmark/other-lang/loop.py
deleted file mode 100644
index 003749bf3a..0000000000
--- a/benchmark/other-lang/loop.py
+++ /dev/null
@@ -1,2 +0,0 @@
-for i in xrange(30000000):
-	pass
diff --git a/benchmark/other-lang/loop.rb b/benchmark/other-lang/loop.rb
deleted file mode 100644
index b367b9dbf3..0000000000
--- a/benchmark/other-lang/loop.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-i = 0
-while i<30000000
-  i += 1
-end
diff --git a/benchmark/other-lang/loop.scm b/benchmark/other-lang/loop.scm
deleted file mode 100644
index 3364f7e679..0000000000
--- a/benchmark/other-lang/loop.scm
+++ /dev/null
@@ -1 +0,0 @@
-(dotimes (x 30000000))
diff --git a/benchmark/other-lang/loop2.rb b/benchmark/other-lang/loop2.rb
deleted file mode 100644
index df8fffc1ff..0000000000
--- a/benchmark/other-lang/loop2.rb
+++ /dev/null
@@ -1 +0,0 @@
-30000000.times{}
diff --git a/benchmark/other-lang/tak.pl b/benchmark/other-lang/tak.pl
deleted file mode 100644
index 7e748a67c6..0000000000
--- a/benchmark/other-lang/tak.pl
+++ /dev/null
@@ -1,11 +0,0 @@
-sub tak {
-    local($x, $y, $z) = @_;
-    if (!($y < $x)) {
-	return $z;
-    } else {
-	return &tak(&tak($x - 1, $y, $z),
-		    &tak($y - 1, $z, $x),
-		    &tak($z - 1, $x, $y));
-    }
-}
-&tak(18, 9, 0);
diff --git a/benchmark/other-lang/tak.py b/benchmark/other-lang/tak.py
deleted file mode 100644
index 04f3f6829c..0000000000
--- a/benchmark/other-lang/tak.py
+++ /dev/null
@@ -1,8 +0,0 @@
-def tak(x, y, z):
-	if not(y<x):
-		return z
-	else:
-		return tak(tak(x-1, y, z),
-		           tak(y-1, z, x),
-		           tak(z-1, x, y))
-tak(18, 9, 0)
diff --git a/benchmark/other-lang/tak.rb b/benchmark/other-lang/tak.rb
deleted file mode 100644
index efe5380f4e..0000000000
--- a/benchmark/other-lang/tak.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-
-def tak x, y, z
-  unless y < x
-    z
-  else
-    tak( tak(x-1, y, z),
-         tak(y-1, z, x),
-         tak(z-1, x, y))
-  end
-end
-
-tak(18, 9, 0)
-
diff --git a/benchmark/other-lang/tak.scm b/benchmark/other-lang/tak.scm
deleted file mode 100644
index 52a7629ee5..0000000000
--- a/benchmark/other-lang/tak.scm
+++ /dev/null
@@ -1,10 +0,0 @@
-(define (tak x y z)
-        (if (not (< y x))
-            z
-          (tak (tak (- x 1) y z)
-               (tak (- y 1) z x)
-               (tak (- z 1) x y))))
-
-(tak 18 9 0)
-
-
diff --git a/benchmark/pm_array.yml b/benchmark/pm_array.yml
deleted file mode 100644
index babb65a289..0000000000
--- a/benchmark/pm_array.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-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/range_last.yml b/benchmark/range_last.yml
deleted file mode 100644
index a6674f82ee..0000000000
--- a/benchmark/range_last.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 90a029d5b9..0000000000
--- a/benchmark/realpath.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-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/require.yml b/benchmark/require.yml
deleted file mode 100644
index 09f218cf08..0000000000
--- a/benchmark/require.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-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
deleted file mode 100644
index 0c63257106..0000000000
--- a/benchmark/require_thread.yml
+++ /dev/null
@@ -1,40 +0,0 @@
-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/securerandom.rb b/benchmark/securerandom.rb
deleted file mode 100644
index a082ea6d5b..0000000000
--- a/benchmark/securerandom.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-require "securerandom"
-
-20_0000.times do
-  SecureRandom.random_number(100)
-end
diff --git a/benchmark/so_ackermann.rb b/benchmark/so_ackermann.rb
deleted file mode 100644
index 4effa1ecaf..0000000000
--- a/benchmark/so_ackermann.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/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
deleted file mode 100644
index 767e03db5f..0000000000
--- a/benchmark/so_array.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/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
deleted file mode 100644
index b1693e4109..0000000000
--- a/benchmark/so_binary_trees.rb
+++ /dev/null
@@ -1,62 +0,0 @@
-# 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
deleted file mode 100644
index 4468e20ac8..0000000000
--- a/benchmark/so_concatenate.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/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
deleted file mode 100644
index 99683505f9..0000000000
--- a/benchmark/so_count_words.yml
+++ /dev/null
@@ -1,65 +0,0 @@
-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
deleted file mode 100644
index eb205b4df1..0000000000
--- a/benchmark/so_exception.rb
+++ /dev/null
@@ -1,61 +0,0 @@
-#!/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 = $LO + 1
-  end
-end
-
-def blowup(num)
-  if num % 2 == 0
-    raise Lo_Exception.new(num)
-  else
-    raise Hi_Exception.new(num)
-  end
-end
-
-
-i = 1
-max = NUM+1
-while i < max
-  i += 1
-  some_function(i+1)
-end
diff --git a/benchmark/so_fannkuch.rb b/benchmark/so_fannkuch.rb
deleted file mode 100644
index bac5ecd44c..0000000000
--- a/benchmark/so_fannkuch.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org/
-# Contributed by Sokolov Yura
-# Modified by Ryan Williams
-
-def fannkuch(n)
-   maxFlips, m, r, check = 0, n-1, n, 0
-   count = (1..n).to_a
-   perm = (1..n).to_a
-
-   while true
-      if check < 30
-         puts "#{perm}"
-         check += 1
-      end
-
-      while r != 1
-         count[r-1] = r
-         r -= 1
-      end
-
-      if perm[0] != 1 and perm[m] != n
-         perml = perm.clone #.dup
-         flips = 0
-         while (k = perml.first ) != 1
-            perml = perml.slice!(0, k).reverse + perml
-            flips += 1
-         end
-         maxFlips = flips if flips > maxFlips
-      end
-      while true
-         if r==n then return maxFlips end
-         perm.insert r,perm.shift
-         break if (count[r] -= 1) > 0
-         r += 1
-      end
-   end
-end
-
-def puts *args
-end
-
-N = 9 # (ARGV[0] || 1).to_i
-puts "Pfannkuchen(#{N}) = #{fannkuch(N)}"
-
diff --git a/benchmark/so_fasta.rb b/benchmark/so_fasta.rb
deleted file mode 100644
index dcc6b39507..0000000000
--- a/benchmark/so_fasta.rb
+++ /dev/null
@@ -1,81 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org/
-# Contributed by Sokolov Yura
-
-$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/so_k_nucleotide.yml b/benchmark/so_k_nucleotide.yml
deleted file mode 100644
index d7df086c39..0000000000
--- a/benchmark/so_k_nucleotide.yml
+++ /dev/null
@@ -1,155 +0,0 @@
-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
deleted file mode 100644
index e8f4a2a5f7..0000000000
--- a/benchmark/so_lists.rb
+++ /dev/null
@@ -1,47 +0,0 @@
-#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/so_mandelbrot.rb b/benchmark/so_mandelbrot.rb
deleted file mode 100644
index 76331c64b8..0000000000
--- a/benchmark/so_mandelbrot.rb
+++ /dev/null
@@ -1,57 +0,0 @@
-#  The Computer Language Benchmarks Game
-#  http://shootout.alioth.debian.org/
-#
-#  contributed by Karl von Laudermann
-#  modified by Jeremy Echols
-
-size = 600 # ARGV[0].to_i
-
-puts "P4\n#{size} #{size}"
-
-ITER = 49                           # Iterations - 1 for easy for..in looping
-LIMIT_SQUARED = 4.0                 # Presquared limit
-
-byte_acc = 0
-bit_num = 0
-
-count_size = size - 1               # Precomputed size for easy for..in looping
-
-# For..in loops are faster than .upto, .downto, .times, etc.
-for y in 0..count_size
-  for x in 0..count_size
-    zr = 0.0
-    zi = 0.0
-    cr = (2.0*x/size)-1.5
-    ci = (2.0*y/size)-1.0
-    escape = false
-
-    # To make use of the for..in code, we use a dummy variable,
-    # like one would in C
-    for dummy in 0..ITER
-      tr = zr*zr - zi*zi + cr
-      ti = 2*zr*zi + ci
-      zr, zi = tr, ti
-
-      if (zr*zr+zi*zi) > LIMIT_SQUARED
-        escape = true
-        break
-      end
-    end
-
-    byte_acc = (byte_acc << 1) | (escape ? 0b0 : 0b1)
-    bit_num += 1
-
-    # Code is very similar for these cases, but using separate blocks
-    # ensures we skip the shifting when it's unnecessary, which is most cases.
-    if (bit_num == 8)
-      print byte_acc.chr
-      byte_acc = 0
-      bit_num = 0
-    elsif (x == count_size)
-      byte_acc <<= (8 - bit_num)
-      print byte_acc.chr
-      byte_acc = 0
-      bit_num = 0
-    end
-  end
-end
diff --git a/benchmark/so_matrix.rb b/benchmark/so_matrix.rb
deleted file mode 100644
index 2d1e72bda9..0000000000
--- a/benchmark/so_matrix.rb
+++ /dev/null
@@ -1,48 +0,0 @@
-#!/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
deleted file mode 100644
index 8c136baa6c..0000000000
--- a/benchmark/so_meteor_contest.rb
+++ /dev/null
@@ -1,563 +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 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/so_nbody.rb b/benchmark/so_nbody.rb
deleted file mode 100644
index d6c5bb9e61..0000000000
--- a/benchmark/so_nbody.rb
+++ /dev/null
@@ -1,148 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org
-#
-# Optimized for Ruby by Jesse Millikan
-# From version ported by Michael Neumann from the C gcc version,
-# which was written by Christoph Bauer.
-
-SOLAR_MASS = 4 * Math::PI**2
-DAYS_PER_YEAR = 365.24
-
-def _puts *args
-end
-
-class Planet
- attr_accessor :x, :y, :z, :vx, :vy, :vz, :mass
-
- def initialize(x, y, z, vx, vy, vz, mass)
-  @x, @y, @z = x, y, z
-  @vx, @vy, @vz = vx * DAYS_PER_YEAR, vy * DAYS_PER_YEAR, vz * DAYS_PER_YEAR
-  @mass = mass * SOLAR_MASS
- end
-
- def move_from_i(bodies, nbodies, dt, i)
-  while i < nbodies
-   b2 = bodies[i]
-   dx = @x - b2.x
-   dy = @y - b2.y
-   dz = @z - b2.z
-
-   distance = Math.sqrt(dx * dx + dy * dy + dz * dz)
-   mag = dt / (distance * distance * distance)
-   b_mass_mag, b2_mass_mag = @mass * mag, b2.mass * mag
-
-   @vx -= dx * b2_mass_mag
-   @vy -= dy * b2_mass_mag
-   @vz -= dz * b2_mass_mag
-   b2.vx += dx * b_mass_mag
-   b2.vy += dy * b_mass_mag
-   b2.vz += dz * b_mass_mag
-   i += 1
-  end
-
-  @x += dt * @vx
-  @y += dt * @vy
-  @z += dt * @vz
- end
-end
-
-def energy(bodies)
-  e = 0.0
-  nbodies = bodies.size
-
-  for i in 0 ... nbodies
-    b = bodies[i]
-    e += 0.5 * b.mass * (b.vx * b.vx + b.vy * b.vy + b.vz * b.vz)
-    for j in (i + 1) ... nbodies
-      b2 = bodies[j]
-      dx = b.x - b2.x
-      dy = b.y - b2.y
-      dz = b.z - b2.z
-      distance = Math.sqrt(dx * dx + dy * dy + dz * dz)
-      e -= (b.mass * b2.mass) / distance
-    end
-  end
-  e
-end
-
-def offset_momentum(bodies)
-  px, py, pz = 0.0, 0.0, 0.0
-
-  for b in bodies
-    m = b.mass
-    px += b.vx * m
-    py += b.vy * m
-    pz += b.vz * m
-  end
-
-  b = bodies[0]
-  b.vx = - px / SOLAR_MASS
-  b.vy = - py / SOLAR_MASS
-  b.vz = - pz / SOLAR_MASS
-end
-
-BODIES = [
-  # sun
-  Planet.new(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0),
-
-  # jupiter
-  Planet.new(
-    4.84143144246472090e+00,
-    -1.16032004402742839e+00,
-    -1.03622044471123109e-01,
-    1.66007664274403694e-03,
-    7.69901118419740425e-03,
-    -6.90460016972063023e-05,
-    9.54791938424326609e-04),
-
-  # saturn
-  Planet.new(
-    8.34336671824457987e+00,
-    4.12479856412430479e+00,
-    -4.03523417114321381e-01,
-    -2.76742510726862411e-03,
-    4.99852801234917238e-03,
-    2.30417297573763929e-05,
-    2.85885980666130812e-04),
-
-  # uranus
-  Planet.new(
-    1.28943695621391310e+01,
-    -1.51111514016986312e+01,
-    -2.23307578892655734e-01,
-    2.96460137564761618e-03,
-    2.37847173959480950e-03,
-    -2.96589568540237556e-05,
-    4.36624404335156298e-05),
-
-  # neptune
-  Planet.new(
-    1.53796971148509165e+01,
-    -2.59193146099879641e+01,
-    1.79258772950371181e-01,
-    2.68067772490389322e-03,
-    1.62824170038242295e-03,
-    -9.51592254519715870e-05,
-    5.15138902046611451e-05)
-]
-
-init = 200_000 # ARGV[0]
-n = Integer(init)
-
-offset_momentum(BODIES)
-
-puts "%.9f" % energy(BODIES)
-
-nbodies = BODIES.size
-dt = 0.01
-
-n.times do
-  i = 0
-  while i < nbodies
-    b = BODIES[i]
-    b.move_from_i(BODIES, nbodies, dt, i + 1)
-    i += 1
-  end
-end
-
-puts "%.9f" % energy(BODIES)
diff --git a/benchmark/so_nested_loop.rb b/benchmark/so_nested_loop.rb
deleted file mode 100644
index 766fcf7b84..0000000000
--- a/benchmark/so_nested_loop.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/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/so_nsieve.rb b/benchmark/so_nsieve.rb
deleted file mode 100644
index a65cc78233..0000000000
--- a/benchmark/so_nsieve.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org/
-#
-# contributed by Glenn Parker, March 2005
-# modified by Evan Phoenix, Sept 2006
-
-def sieve(m)
-  flags = Flags.dup[0,m]
-  count = 0
-  pmax = m - 1
-  p = 2
-  while p <= pmax
-    unless flags[p].zero?
-      count += 1
-      mult = p
-      while mult <= pmax
-        flags[mult] = 0
-        mult += p
-      end
-    end
-    p += 1
-  end
-  count
-end
-
-n = 9 # (ARGV[0] || 2).to_i
-Flags = ("\x1" * ( 2 ** n * 10_000)).unpack("c*")
-
-n.downto(n-2) do |exponent|
-  break if exponent < 0
-  m = (1 << exponent) * 10_000
-  # m = (2 ** exponent) * 10_000
-  count = sieve(m)
-  printf "Primes up to %8d %8d\n", m, count
-end
diff --git a/benchmark/so_nsieve_bits.rb b/benchmark/so_nsieve_bits.rb
deleted file mode 100644
index 6f958ee44e..0000000000
--- a/benchmark/so_nsieve_bits.rb
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/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
deleted file mode 100644
index 131f44624c..0000000000
--- a/benchmark/so_object.rb
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/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/so_partial_sums.rb b/benchmark/so_partial_sums.rb
deleted file mode 100644
index 630b45cb8d..0000000000
--- a/benchmark/so_partial_sums.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-n = 2_500_000 # (ARGV.shift || 1).to_i
-
-alt = 1.0 ; s0 = s1 = s2 = s3 = s4 = s5 = s6 = s7 = s8 = 0.0
-
-1.upto(n) do |d|
-  d = d.to_f ; d2 = d * d ; d3 = d2 * d ; ds = Math.sin(d) ; dc = Math.cos(d)
-
-  s0 += (2.0 / 3.0) ** (d - 1.0)
-  s1 += 1.0 / Math.sqrt(d)
-  s2 += 1.0 / (d * (d + 1.0))
-  s3 += 1.0 / (d3 * ds * ds)
-  s4 += 1.0 / (d3 * dc * dc)
-  s5 += 1.0 / d
-  s6 += 1.0 / d2
-  s7 += alt / d
-  s8 += alt / (2.0 * d - 1.0)
-
-  alt = -alt
-end
-
-if false
-  printf("%.9f\t(2/3)^k\n", s0)
-  printf("%.9f\tk^-0.5\n", s1)
-  printf("%.9f\t1/k(k+1)\n", s2)
-  printf("%.9f\tFlint Hills\n", s3)
-  printf("%.9f\tCookson Hills\n", s4)
-  printf("%.9f\tHarmonic\n", s5)
-  printf("%.9f\tRiemann Zeta\n", s6)
-  printf("%.9f\tAlternating Harmonic\n", s7)
-  printf("%.9f\tGregory\n", s8)
-end
diff --git a/benchmark/so_pidigits.rb b/benchmark/so_pidigits.rb
deleted file mode 100644
index 9a537b2d1c..0000000000
--- a/benchmark/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/so_random.rb b/benchmark/so_random.rb
deleted file mode 100644
index a66b9e8e63..0000000000
--- a/benchmark/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 = 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
deleted file mode 100644
index de05eedfc4..0000000000
--- a/benchmark/so_reverse_complement.yml
+++ /dev/null
@@ -1,137 +0,0 @@
-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
deleted file mode 100644
index 43dc302648..0000000000
--- a/benchmark/so_sieve.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-# 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/so_spectralnorm.rb b/benchmark/so_spectralnorm.rb
deleted file mode 100644
index 6b97206689..0000000000
--- a/benchmark/so_spectralnorm.rb
+++ /dev/null
@@ -1,50 +0,0 @@
-# The Computer Language Shootout
-# http://shootout.alioth.debian.org/
-# Contributed by Sokolov Yura
-
-def eval_A(i,j)
-	return 1.0/((i+j)*(i+j+1)/2+i+1)
-end
-
-def eval_A_times_u(u)
-        v, i = nil, nil
-	(0..u.length-1).collect { |i|
-                v = 0
-		for j in 0..u.length-1
-			v += eval_A(i,j)*u[j]
-                end
-                v
-        }
-end
-
-def eval_At_times_u(u)
-	v, i = nil, nil
-	(0..u.length-1).collect{|i|
-                v = 0
-		for j in 0..u.length-1
-			v += eval_A(j,i)*u[j]
-                end
-                v
-        }
-end
-
-def eval_AtA_times_u(u)
-	return eval_At_times_u(eval_A_times_u(u))
-end
-
-n = 500 # ARGV[0].to_i
-
-u=[1]*n
-for i in 1..10
-        v=eval_AtA_times_u(u)
-        u=eval_AtA_times_u(v)
-end
-vBv=0
-vv=0
-for i in 0..n-1
-        vBv += u[i]*v[i]
-        vv += v[i]*v[i]
-end
-
-str = "%0.9f" % (Math.sqrt(vBv/vv)), "\n"
-# print str
diff --git a/benchmark/string_capitalize.yml b/benchmark/string_capitalize.yml
deleted file mode 100644
index 7d23fd3d35..0000000000
--- a/benchmark/string_capitalize.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index 2354040a04..0000000000
--- a/benchmark/string_casecmp.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-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
deleted file mode 100644
index a790ce7d55..0000000000
--- a/benchmark/string_casecmp_p.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-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
deleted file mode 100644
index 1fea6afbec..0000000000
--- a/benchmark/string_downcase.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-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
deleted file mode 100644
index 7783111082..0000000000
--- a/benchmark/string_index.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-str1 = "�" * 1024 + "�" # not single byte optimizable
-str2 = "�"
-100_000.times { str1.index(str2) }
diff --git a/benchmark/string_scan_re.rb b/benchmark/string_scan_re.rb
deleted file mode 100644
index b0d60201a9..0000000000
--- a/benchmark/string_scan_re.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index 42440bd948..0000000000
--- a/benchmark/string_scan_str.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-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
deleted file mode 100644
index fc2393c5d1..0000000000
--- a/benchmark/string_slice.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-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
deleted file mode 100644
index cc2c7d7855..0000000000
--- a/benchmark/string_split.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index eeb5928907..0000000000
--- a/benchmark/string_swapcase.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-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
deleted file mode 100644
index dab84bbde2..0000000000
--- a/benchmark/string_upcase.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-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
deleted file mode 100644
index 8d89ebb7a7..0000000000
--- a/benchmark/time_strptime.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index 505021c701..0000000000
--- a/benchmark/time_subsec.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-t = Time.now
-4000000.times { t.subsec }
diff --git a/benchmark/vm_array.yml b/benchmark/vm_array.yml
deleted file mode 100644
index 2a177237ef..0000000000
--- a/benchmark/vm_array.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 75b803478e..0000000000
--- a/benchmark/vm_attr_ivar.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-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
deleted file mode 100644
index a0d379b18a..0000000000
--- a/benchmark/vm_attr_ivar_set.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-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
deleted file mode 100644
index 0fbf73e1ca..0000000000
--- a/benchmark/vm_backtrace.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-# 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
deleted file mode 100644
index 8b2d3f3443..0000000000
--- a/benchmark/vm_bigarray.yml
+++ /dev/null
@@ -1,105 +0,0 @@
-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
deleted file mode 100644
index 4dacfde793..0000000000
--- a/benchmark/vm_bighash.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 68b3e40bf5..0000000000
--- a/benchmark/vm_block.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index 461d7953ad..0000000000
--- a/benchmark/vm_block_handler.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-# :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
deleted file mode 100644
index 5e5a0170a2..0000000000
--- a/benchmark/vm_blockparam.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index a7d8d366ea..0000000000
--- a/benchmark/vm_blockparam_call.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 841f5e7a63..0000000000
--- a/benchmark/vm_blockparam_pass.yml
+++ /dev/null
@@ -1,12 +0,0 @@
-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
deleted file mode 100644
index 8ea9b46ed2..0000000000
--- a/benchmark/vm_blockparam_yield.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index b26a491a15..0000000000
--- a/benchmark/vm_case.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index 9f91801544..0000000000
--- a/benchmark/vm_case_lit.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-# 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
deleted file mode 100644
index 9661323cd2..0000000000
--- a/benchmark/vm_clearmethodcache.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 6064d4eed0..0000000000
--- a/benchmark/vm_const.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 347e0cfd33..0000000000
--- a/benchmark/vm_defined_method.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 30c7a3193c..0000000000
--- a/benchmark/vm_dstr.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index 4ea62f30de..0000000000
--- a/benchmark/vm_ensure.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-# 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
deleted file mode 100644
index 7ba1a8d1de..0000000000
--- a/benchmark/vm_eval.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-benchmark:
-  vm_eval: |
-    eval("1")
-loop_count: 6000000
diff --git a/benchmark/vm_fiber_allocate.yml b/benchmark/vm_fiber_allocate.yml
deleted file mode 100644
index b5a54e1ddf..0000000000
--- a/benchmark/vm_fiber_allocate.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index b83d3152d4..0000000000
--- a/benchmark/vm_fiber_count.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-# 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
deleted file mode 100644
index 4ca41085b1..0000000000
--- a/benchmark/vm_fiber_reuse.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-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
deleted file mode 100644
index 892622f121..0000000000
--- a/benchmark/vm_fiber_reuse_gc.yml
+++ /dev/null
@@ -1,12 +0,0 @@
-# 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
deleted file mode 100644
index 3de36b66eb..0000000000
--- a/benchmark/vm_fiber_switch.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index 92f5fd52ab..0000000000
--- a/benchmark/vm_float_simple.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index facc9aa043..0000000000
--- a/benchmark/vm_freezestring.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-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
deleted file mode 100644
index e668026915..0000000000
--- a/benchmark/vm_gc.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index cfdfc8c5a5..0000000000
--- a/benchmark/vm_gc_old_full.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index ad22feb655..0000000000
--- a/benchmark/vm_gc_old_immediate.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index b74d44baf1..0000000000
--- a/benchmark/vm_gc_old_lazy.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 29c803fee3..0000000000
--- a/benchmark/vm_gc_short_lived.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-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
deleted file mode 100644
index 4b6c3ed7b9..0000000000
--- a/benchmark/vm_gc_short_with_complex_long.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-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
deleted file mode 100644
index 03ba0f95a9..0000000000
--- a/benchmark/vm_gc_short_with_long.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index 129b8bf4ed..0000000000
--- a/benchmark/vm_gc_short_with_symbol.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index e3293e72d0..0000000000
--- a/benchmark/vm_gc_wb_ary.yml
+++ /dev/null
@@ -1,12 +0,0 @@
-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
deleted file mode 100644
index 003995945b..0000000000
--- a/benchmark/vm_gc_wb_ary_promoted.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-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
deleted file mode 100644
index a2a2ce2d18..0000000000
--- a/benchmark/vm_gc_wb_obj.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-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
deleted file mode 100644
index 00a454ba72..0000000000
--- a/benchmark/vm_gc_wb_obj_promoted.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-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
deleted file mode 100644
index 21bb7db247..0000000000
--- a/benchmark/vm_iclass_super.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-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
deleted file mode 100644
index 119531d5ef..0000000000
--- a/benchmark/vm_ivar.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-prelude: "@a = 1\n"
-benchmark:
-  vm_ivar: |
-    j = @a
-    k = @a
-loop_count: 30000000
diff --git a/benchmark/vm_ivar_set.yml b/benchmark/vm_ivar_set.yml
deleted file mode 100644
index 8bbb60043b..0000000000
--- a/benchmark/vm_ivar_set.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-benchmark:
-  vm_ivar_set: |
-    @a = 1
-    @b = 2
-loop_count: 30000000
diff --git a/benchmark/vm_length.yml b/benchmark/vm_length.yml
deleted file mode 100644
index 5fd94e7d86..0000000000
--- a/benchmark/vm_length.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 70a9b1c0ca..0000000000
--- a/benchmark/vm_lvar_init.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-# 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
deleted file mode 100644
index f29f763d81..0000000000
--- a/benchmark/vm_lvar_set.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index d45e4ec572..0000000000
--- a/benchmark/vm_method.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 3da456c0bb..0000000000
--- a/benchmark/vm_method_missing.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-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
deleted file mode 100644
index 281a481394..0000000000
--- a/benchmark/vm_method_with_block.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 243229ba4a..0000000000
--- a/benchmark/vm_module_ann_const_set.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index e5a24181a9..0000000000
--- a/benchmark/vm_module_const_set.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index abcf1e28ce..0000000000
--- a/benchmark/vm_mutex.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index fb04d15ae8..0000000000
--- a/benchmark/vm_neq.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 0b9787d91a..0000000000
--- a/benchmark/vm_newlambda.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-benchmark:
-  vm_newlambda: |
-    lambda {}
-loop_count: 6000000
diff --git a/benchmark/vm_not.yml b/benchmark/vm_not.yml
deleted file mode 100644
index c68dde3c50..0000000000
--- a/benchmark/vm_not.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index dd2f4e71de..0000000000
--- a/benchmark/vm_poly_method.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-# 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
deleted file mode 100644
index bca1b62729..0000000000
--- a/benchmark/vm_poly_method_ov.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-# 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
deleted file mode 100644
index 6c5404ac84..0000000000
--- a/benchmark/vm_poly_same_method.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-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
deleted file mode 100644
index c7923160fb..0000000000
--- a/benchmark/vm_poly_singleton.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-# 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
deleted file mode 100644
index 2f8de6c272..0000000000
--- a/benchmark/vm_proc.yml
+++ /dev/null
@@ -1,12 +0,0 @@
-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
deleted file mode 100644
index 247d9f70ee..0000000000
--- a/benchmark/vm_raise1.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-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
deleted file mode 100644
index f0fa047b3c..0000000000
--- a/benchmark/vm_raise2.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-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
deleted file mode 100644
index 2aa3d94dbd..0000000000
--- a/benchmark/vm_regexp.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index b4a0af521f..0000000000
--- a/benchmark/vm_rescue.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-benchmark:
-  vm_rescue: |
-    begin
-    rescue
-    end
-loop_count: 30000000
diff --git a/benchmark/vm_send.yml b/benchmark/vm_send.yml
deleted file mode 100644
index 753d3e8318..0000000000
--- a/benchmark/vm_send.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-prelude: |
-  class C
-    def m
-    end
-  end
-
-  o = C.new
-benchmark:
-  vm_send: |
-    o.__send__ :m
-loop_count: 6000000
diff --git a/benchmark/vm_send_cfunc.yml b/benchmark/vm_send_cfunc.yml
deleted file mode 100644
index b114ac317d..0000000000
--- a/benchmark/vm_send_cfunc.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-benchmark:
-  vm_send_cfunc: self.class
-loop_count: 100000000
diff --git a/benchmark/vm_simplereturn.yml b/benchmark/vm_simplereturn.yml
deleted file mode 100644
index c9829cff0b..0000000000
--- a/benchmark/vm_simplereturn.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 64439c7980..0000000000
--- a/benchmark/vm_string_literal.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-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
deleted file mode 100644
index 4cf78970cb..0000000000
--- a/benchmark/vm_struct_big_aref_hi.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index c91af27fa5..0000000000
--- a/benchmark/vm_struct_big_aref_lo.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 69550d14ea..0000000000
--- a/benchmark/vm_struct_big_aset.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-# 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
deleted file mode 100644
index 09b764dd13..0000000000
--- a/benchmark/vm_struct_big_href_hi.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index d2f00b220f..0000000000
--- a/benchmark/vm_struct_big_href_lo.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index fc45cbee9c..0000000000
--- a/benchmark/vm_struct_big_hset.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-# 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
deleted file mode 100644
index 5a83251d1e..0000000000
--- a/benchmark/vm_struct_small_aref.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 74f435f126..0000000000
--- a/benchmark/vm_struct_small_aset.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-# 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
deleted file mode 100644
index 6b7d7f39e7..0000000000
--- a/benchmark/vm_struct_small_href.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 5d43b150de..0000000000
--- a/benchmark/vm_struct_small_hset.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 0d1e965c6e..0000000000
--- a/benchmark/vm_super.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-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
deleted file mode 100644
index e824a65e0a..0000000000
--- a/benchmark/vm_swap.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 1d433353e1..0000000000
--- a/benchmark/vm_symbol_block_pass.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-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
deleted file mode 100644
index d21737d3e8..0000000000
--- a/benchmark/vm_thread_alive_check.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-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
deleted file mode 100644
index 3e9a265ce8..0000000000
--- a/benchmark/vm_thread_close.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-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
deleted file mode 100644
index cf5706b23e..0000000000
--- a/benchmark/vm_thread_condvar1.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-# 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
deleted file mode 100644
index 7c8dc19481..0000000000
--- a/benchmark/vm_thread_condvar2.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-# 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
deleted file mode 100644
index 393cd45df9..0000000000
--- a/benchmark/vm_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/vm_thread_mutex1.rb b/benchmark/vm_thread_mutex1.rb
deleted file mode 100644
index 66e42c85e1..0000000000
--- a/benchmark/vm_thread_mutex1.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-# 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
deleted file mode 100644
index 6e6c804c31..0000000000
--- a/benchmark/vm_thread_mutex2.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-# 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
deleted file mode 100644
index c750dc542a..0000000000
--- a/benchmark/vm_thread_mutex3.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-# 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
deleted file mode 100644
index 438bd08d45..0000000000
--- a/benchmark/vm_thread_pass.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-# 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
deleted file mode 100644
index 65df8e6154..0000000000
--- a/benchmark/vm_thread_pass_flood.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-# 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
deleted file mode 100644
index 112a621905..0000000000
--- a/benchmark/vm_thread_pipe.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-# 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
deleted file mode 100644
index 1dd3696a3c..0000000000
--- a/benchmark/vm_thread_queue.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-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
deleted file mode 100644
index 7b9af5482b..0000000000
--- a/benchmark/vm_thread_sized_queue.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-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
deleted file mode 100644
index de9f55e978..0000000000
--- a/benchmark/vm_thread_sized_queue2.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-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
deleted file mode 100644
index ce5f1796d8..0000000000
--- a/benchmark/vm_thread_sized_queue3.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-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
deleted file mode 100644
index a9b7d80ec0..0000000000
--- a/benchmark/vm_thread_sized_queue4.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-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
deleted file mode 100644
index 96901d8466..0000000000
--- a/benchmark/vm_thread_sleep.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-benchmark:
-  vm_thread_sleep: |
-    Thread.new { sleep }
-loop_count: 10_000
diff --git a/benchmark/vm_unif1.yml b/benchmark/vm_unif1.yml
deleted file mode 100644
index 04187bb0e2..0000000000
--- a/benchmark/vm_unif1.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-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
deleted file mode 100644
index 230be3d84f..0000000000
--- a/benchmark/vm_yield.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-# 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
deleted file mode 100644
index bfb5837578..0000000000
--- a/benchmark/vm_zsuper.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-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/bignum.c b/bignum.c
index 65a50ea9ba..ac84ae410c 100644
--- a/bignum.c
+++ b/bignum.c
@@ -1,5234 +1,388 @@
-/**********************************************************************
+/************************************************
 
   bignum.c -
 
   $Author$
+  $Date$
   created at: Fri Jun 10 00:48:55 JST 1994
 
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
-
-**********************************************************************/
-
-#include "ruby/internal/config.h"
+************************************************/
 
+#include "ruby.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>
-#endif
-
-#if defined(HAVE_LIBGMP) && defined(HAVE_GMP_H)
-# define USE_GMP
-# include <gmp.h>
-#endif
-
-#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
-
-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
-
-#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 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 BIGZEROP(x) (BIGNUM_LEN(x) == 0 || \
-		     (BDIGITS(x)[0] == 0 && \
-		      (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
-bary_cmp(const BDIGIT *xds, size_t xn, const BDIGIT *yds, size_t yn)
-{
-    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;
-    }
+extern VALUE cInteger;
+VALUE cBignum;
 
-    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;
+#define BDIGITS(x) RBIGNUM(x)->digits
+#define BITSPERDIG (sizeof(USHORT)*CHAR_BIT)
+#define BIGRAD (1L << BITSPERDIG)
+#define DIGSPERINT ((UINT)(sizeof(INT)/sizeof(USHORT)))
+#define BIGUP(x) ((UINT)(x) << BITSPERDIG)
+#define BIGDN(x) ((x) >> BITSPERDIG)
+#define BIGLO(x) ((x) & (BIGRAD-1))
 
-  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)
+static VALUE
+bignew_1(klass, len, sign)
+    VALUE klass;
+    UINT len;
+    char sign;
 {
-    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);
-    }
-}
+    NEWOBJ(big, struct RBignum);
+    OBJSETUP(big, klass, T_BIGNUM);
+    big->sign = sign;
+    big->len = len;
+    BDIGITS(big) = ALLOC_N(USHORT, len);
 
-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;
+    return (VALUE)big;
 }
 
-/* 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);
-}
+#define bignew(len,sign) bignew_1(cBignum,len,sign)
 
 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)
+big_clone(x)
+    VALUE x;
 {
-    mpz_t x, y, z;
-    size_t count;
-
-    assert(xn + yn <= zn);
+    VALUE z = bignew_1(CLASS_OF(x), RBIGNUM(x)->len, RBIGNUM(x)->sign);
 
-    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);
+    MEMCPY(BDIGITS(z), BDIGITS(x), USHORT, RBIGNUM(x)->len);
     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[rb_genrand_ulong_limited(n / 2) + n / 4]) c++;
-    if (c <= 1 && ds[rb_genrand_ulong_limited(n / 2) + n / 4]) c++;
-    if (c <= 1 && ds[rb_genrand_ulong_limited(n / 2) + n / 4]) 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)
+void
+big_2comp(x)			/* get 2's complement */
+    VALUE x;
 {
-    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;
+    UINT i = RBIGNUM(x)->len;
+    USHORT *ds = BDIGITS(x);
+    long num;
 
+    while (i--) ds[i] = ~ds[i];
+    i = 0; num = 1;
     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;
+	num += (long)ds[i];
+	ds[i++] = BIGLO(num);
+	num = BIGDN(num);
+    } while (i < RBIGNUM(x)->len);
+    if (ds[0] == 1 || ds[0] == 0) {
+	for (i=1;i<RBIGNUM(x)->len;i++) {
+	    if (ds[i] != 0) return;
 	}
+	REALLOC_N(BDIGITS(x), USHORT, RBIGNUM(x)->len++);
+	ds = BDIGITS(x);
+	ds[RBIGNUM(x)->len-1] = 1;
     }
-    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
-rb_cmpint(VALUE val, VALUE a, VALUE b)
+static VALUE
+bignorm(x)
+    VALUE x;
 {
-    if (NIL_P(val)) {
-	rb_cmperr(a, b);
-    }
-    if (FIXNUM_P(val)) {
-        long l = FIX2LONG(val);
-        if (l > 0) return 1;
-        if (l < 0) return -1;
-        return 0;
-    }
-    if (RB_BIGNUM_TYPE_P(val)) {
-	if (BIGZEROP(val)) return 0;
-	if (BIGNUM_SIGN(val)) return 1;
-	return -1;
-    }
-    if (RTEST(rb_funcall(val, '>', 1, INT2FIX(0)))) return 1;
-    if (RTEST(rb_funcall(val, '<', 1, INT2FIX(0)))) return -1;
-    return 0;
-}
+    UINT len = RBIGNUM(x)->len;
+    USHORT *ds = BDIGITS(x);
 
-#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)))
+    while (len-- && !ds[len]) ;
+    RBIGNUM(x)->len = ++len;
 
-static void
-rb_big_realloc(VALUE big, size_t len)
-{
-    BDIGIT *ds;
-    if (BIGNUM_EMBED_P(big)) {
-	if (BIGNUM_EMBED_LEN_MAX < len) {
-	    ds = ALLOC_N(BDIGIT, len);
-	    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;
-            FL_UNSET_RAW(big, BIGNUM_EMBED_FLAG);
+    if (len*sizeof(USHORT) < sizeof(VALUE) ||
+	(len*sizeof(USHORT) == sizeof(VALUE) &&
+	 ds[sizeof(VALUE)/sizeof(USHORT)-1] <= 0x3fff)) {
+	long num = 0;
+	while (len--) {
+	    num = BIGUP(num) + ds[len];
 	}
-    }
-    else {
-	if (len <= BIGNUM_EMBED_LEN_MAX) {
-	    ds = RBIGNUM(big)->as.heap.digits;
-            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 (BIGNUM_LEN(big) == 0) {
-		RBIGNUM(big)->as.heap.digits = ALLOC_N(BDIGIT, len);
-	    }
-	    else {
-		REALLOC_N(RBIGNUM(big)->as.heap.digits, BDIGIT, len);
-	    }
+	if (RBIGNUM(x)->sign) {
+	    if (POSFIXABLE(num)) return INT2FIX(num);
 	}
-    }
-}
-
-void
-rb_big_resize(VALUE big, size_t len)
-{
-    rb_big_realloc(big, len);
-    BIGNUM_SET_LEN(big, len);
-}
-
-static VALUE
-bignew_1(VALUE klass, size_t len, int sign)
-{
-    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 {
-        big->as.heap.digits = ALLOC_N(BDIGIT, len);
-        big->as.heap.len = len;
-    }
-    OBJ_FREEZE(bigv);
-    return bigv;
-}
-
-VALUE
-rb_big_new(size_t len, int sign)
-{
-    return bignew(len, sign != 0);
-}
-
-VALUE
-rb_big_clone(VALUE x)
-{
-    size_t len = BIGNUM_LEN(x);
-    VALUE z = bignew_1(CLASS_OF(x), len, BIGNUM_SIGN(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 = BIGNUM_LEN(x);
-    BDIGIT *ds = BDIGITS(x);
-
-    if (bary_2comp(ds, i)) {
-        big_extend_carry(x);
-    }
-}
-
-void
-rb_big_2comp(VALUE x)			/* get 2's complement */
-{
-    get2comp(x);
-}
-
-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)
-{
-    size_t len = BIGNUM_LEN(x);
-    BDIGIT *ds = BDIGITS(x);
-
-    if (len == 0) return x;
-    while (--len && !ds[len]);
-    if (BIGNUM_LEN(x) > len+1) {
-	rb_big_resize(x, len+1);
-    }
-    return x;
-}
-
-static inline VALUE
-bigfixize(VALUE x)
-{
-    size_t n = BIGNUM_LEN(x);
-    BDIGIT *ds = BDIGITS(x);
-#if SIZEOF_BDIGIT < SIZEOF_LONG
-    unsigned long u;
-#else
-    BDIGIT u;
-#endif
-
-    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 (RB_BIGNUM_TYPE_P(x)) {
-	x = bigfixize(x);
+	else if (NEGFIXABLE(-num)) return INT2FIX(-num);
     }
     return x;
 }
 
 VALUE
-rb_big_norm(VALUE x)
+big_norm(x)
+    VALUE x;
 {
-    return bignorm(x);
+    return bignorm(RBIGNUM(x));
 }
 
 VALUE
-rb_uint2big(uintptr_t n)
+uint2big(n)
+    UINT n;
 {
-    long i;
-    VALUE big = bignew(bdigit_roomof(SIZEOF_VALUE), 1);
-    BDIGIT *digits = BDIGITS(big);
+    UINT i = 0;
+    USHORT *digits;
+    VALUE big;
 
-#if SIZEOF_BDIGIT >= SIZEOF_VALUE
-    digits[0] = n;
-#else
-    for (i = 0; i < bdigit_roomof(SIZEOF_VALUE); i++) {
-	digits[i] = BIGLO(n);
+    i = 0;
+    big = bignew(DIGSPERINT, 1);
+    digits = BDIGITS(big);
+    while (i < DIGSPERINT) {
+	digits[i++] = BIGLO(n);
 	n = BIGDN(n);
     }
-#endif
 
-    i = bdigit_roomof(SIZEOF_VALUE);
-    while (--i && !digits[i]) ;
-    BIGNUM_SET_LEN(big, i+1);
+    i = DIGSPERINT;
+    while (i-- && !digits[i]) ;
+    RBIGNUM(big)->len = i+1;
     return big;
 }
 
 VALUE
-rb_int2big(intptr_t n)
+int2big(n)
+    INT n;
 {
-    long neg = 0;
-    VALUE u;
+    INT neg = 0;
     VALUE big;
 
     if (n < 0) {
-        u = 1 + (VALUE)(-(n + 1)); /* u = -n avoiding overflow */
+	n = -n;
 	neg = 1;
     }
-    else {
-        u = n;
-    }
-    big = rb_uint2big(u);
+    big = uint2big(n);
     if (neg) {
-	BIGNUM_SET_NEGATIVE_SIGN(big);
+	RBIGNUM(big)->sign = 0;
     }
     return big;
 }
 
 VALUE
-rb_uint2inum(uintptr_t n)
-{
-    if (POSFIXABLE(n)) return LONG2FIX(n);
-    return rb_uint2big(n);
-}
-
-VALUE
-rb_int2inum(intptr_t n)
-{
-    if (FIXABLE(n)) return LONG2FIX(n);
-    return rb_int2big(n);
-}
-
-void
-rb_big_pack(VALUE val, unsigned long *buf, long num_longs)
+uint2inum(n)
+    UINT n;
 {
-    rb_integer_pack(val, buf, num_longs, sizeof(long), 0,
-            INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_NATIVE_BYTE_ORDER|
-            INTEGER_PACK_2COMP);
+    if (POSFIXABLE(n)) return INT2FIX(n);
+    return uint2big(n);
 }
 
 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)) {
-        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--;
-    if (dp == de) {
-        if (nlz_bits_ret)
-            *nlz_bits_ret = 0;
-        return 0;
-    }
-    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;
-}
-
-static size_t
-absint_numwords_small(size_t numbytes, int nlz_bits_in_msbyte, size_t word_numbits, size_t *nlz_bits_ret)
-{
-    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;
-}
-
-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 {
-        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);
-
-    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;
-}
-
-/*
- * 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);
-    }
-    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);
-}
-
-
-/*
- * 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)
+int2inum(n)
+    INT n;
 {
-    int sign;
-    BDIGIT *ds;
-    size_t num_bdigits;
-    BDIGIT fixbuf[bdigit_roomof(sizeof(long))];
-
-    RB_GC_GUARD(val) = rb_to_int(val);
-
-    if (FIXNUM_P(val)) {
-        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);
+    if (FIXABLE(n)) return INT2FIX(n);
+    return int2big(n);
 }
 
-/*
- * 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_integer_unpack(const void *words, size_t numwords, size_t wordsize, size_t nails, int flags)
-{
-    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);
-}
-
-#define conv_digit(c) (ruby_digit36_to_number_table[(unsigned char)(c)])
-
-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;
-
-    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)
+str2inum(str, base)
+    UCHAR *str;
+    int base;
 {
-    char *buf, *p;
-    const char *q;
-    VALUE tmps;
-    mpz_t mz;
+    char sign = 1, c;
+    unsigned long num;
+    UINT len, blen = 1, i;
     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)
-{
-    char *end;
-    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
- */
-
-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) {
-        goto bad;
-    }
-    if (len && (flags & RB_INT_PARSE_SIGN)) {
-	while (ISSPACE(*str)) ADV(1);
+    USHORT *zds;
 
-	if (str[0] == '+') {
-	    ADV(1);
-	}
-	else if (str[0] == '-') {
-	    ADV(1);
-	    sign = 0;
-	}
-	ASSERT_LEN();
+    while (isspace(*str)) str++;
+    if (*str == '-') {
+	str++;
+	sign = 0;
     }
-    if (base <= 0) {
-	if (str[0] == '0' && len > 1) {
-	    switch (str[1]) {
-	      case 'x': case 'X':
+    if (base == 0) {
+	if (*str == '0') {
+	    str++;
+	    if (*str == 'x' || *str == 'X') {
+		str++;
 		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:
+	    }
+	    else {
 		base = 8;
 	    }
-	}
-	else if (base < -1) {
-	    base = -base;
+	    if (*str == '\0') return INT2FIX(0);
 	}
 	else {
 	    base = 10;
 	}
     }
-    else if (len == 1 || !(flags & RB_INT_PARSE_PREFIX)) {
-	/* no prefix */
+    if (base == 8) {
+	while (str[0] == '0') str++;
+	len = 3*strlen(str)*sizeof(char);
     }
-    else if (base == 2) {
-	if (str[0] == '0' && (str[1] == 'b'||str[1] == 'B')) {
-	    ADV(2);
-	}
-    }
-    else if (base == 8) {
-	if (str[0] == '0' && (str[1] == 'o'||str[1] == 'O')) {
-	    ADV(2);
+    else {			/* base == 10 or 16 */
+	if (base == 16 && str[0] == '0' && (str[1] == 'x'||str[1] == 'X')) {
+	    str += 2;
 	}
-    }
-    else if (base == 10) {
-	if (str[0] == '0' && (str[1] == 'd'||str[1] == 'D')) {
-	    ADV(2);
-	}
-    }
-    else if (base == 16) {
-	if (str[0] == '0' && (str[1] == 'x'||str[1] == 'X')) {
-	    ADV(2);
-	}
-    }
-    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;
-	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 {
-		++num_digits;
-		us = 0;
-	    }
-	    if (str == end) break;
-	}
-	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 && num_digits) z = INT2FIX(0);
-	goto bad;
+	while (str[0] == '0') str++;
+	len = 4*strlen(str)*sizeof(char);
     }
 
-    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 (num_digits == 0) return Qnil; /* no number */
-	    while (len < 0 ? *end : end < str + len) {
-		if (!ISSPACE(*end)) return Qnil; /* trailing garbage */
-		end++;
-	    }
-	}
+    if (len <= (sizeof(VALUE)*CHAR_BIT)) {
+	UINT val = strtoul((char*)str, 0, base);
 
 	if (POSFIXABLE(val)) {
-	    if (sign) return LONG2FIX(val);
+	    if (sign) return INT2FIX(val);
 	    else {
-		long result = -(long)val;
-		return LONG2FIX(result);
+		INT result = -(INT)val;
+		return INT2FIX(result);
 	    }
 	}
 	else {
-	    VALUE big = rb_uint2big(val);
-	    BIGNUM_SET_SIGN(big, sign);
-	    return bignorm(big);
+	    VALUE big = uint2big(val);
+	    RBIGNUM(big)->sign = sign;
+	    return big;
 	}
     }
+    len = (len/BITSPERDIG)+1;
 
-  bigparse:
-    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;
-
-    if (POW2_P(base)) {
-        z = str2big_poweroftwo(sign, digits_start, digits_end, num_digits,
-			       bit_length(base-1));
-    }
-    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_convert_to_inum(VALUE str, int base, int badcheck, int raise_exception)
-{
-    VALUE ret;
-    const char *s;
-    long len;
-    char *end;
-
-    StringValue(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);
-    }
-
-    rb_must_asciicompat(arg);
-    s = str = StringValueCStr(arg);
-    len = RSTRING_LEN(arg);
-    if (*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;
-
-    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;
-    }
-
-    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;
+    z = bignew(len, sign);
+    zds = BDIGITS(z);
+    for (i=len;i--;) zds[i]=0;
+    while (c = *str++) {
+	switch (c) {
+	  case '0': case '1': case '2': case '3': case '4':
+	  case '5': case '6': case '7': case '8': case '9':
+	    c = c - '0';
+	    break;
+	  case 'a': case 'b': case 'c':
+	  case 'd': case 'e': case 'f':
+	    c = c - 'a' + 10;
+	    break;
+	  case 'A': case 'B': case 'C':
+	  case 'D': case 'E': case 'F':
+	    c = c - 'A' + 10;
+	    break;
+	  default:
+	    c = base;
+	    break;
+	}
+	if (c >= base) break;
+	i = 0;
+	num = c;
+	for (;;) {
+	    while (i<blen) {
+		num += zds[i]*base;
+		zds[i++] = BIGLO(num);
+		num = BIGDN(num);
+	    }
+	    if (num) {
+		blen++;
+		continue;
+	    }
+	    break;
+	}
     }
-
-    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
+static char hexmap[] = "0123456789abcdef";
 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)
-{
-    long i;
-    VALUE big = bignew(bdigit_roomof(SIZEOF_LONG_LONG), 1);
-    BDIGIT *digits = BDIGITS(big);
-
-#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 = bdigit_roomof(SIZEOF_LONG_LONG);
-    while (i-- && !digits[i]) ;
-    BIGNUM_SET_LEN(big, i+1);
-    return big;
-}
-
-static VALUE
-rb_ll2big(LONG_LONG n)
-{
-    long neg = 0;
-    unsigned LONG_LONG u;
-    VALUE big;
-
-    if (n < 0) {
-        u = 1 + (unsigned LONG_LONG)(-(n + 1)); /* u = -n avoiding overflow */
-	neg = 1;
-    }
-    else {
-        u = n;
-    }
-    big = rb_ull2big(u);
-    if (neg) {
-	BIGNUM_SET_NEGATIVE_SIGN(big);
-    }
-    return big;
-}
-
-VALUE
-rb_ull2inum(unsigned LONG_LONG n)
-{
-    if (POSFIXABLE(n)) return LONG2FIX(n);
-    return rb_ull2big(n);
-}
-
-VALUE
-rb_ll2inum(LONG_LONG n)
-{
-    if (FIXABLE(n)) return LONG2FIX(n);
-    return rb_ll2big(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)
-{
-    return rb_cstr_to_inum(str, base, base==0);
-}
-
-VALUE
-rb_str2inum(VALUE str, int base)
-{
-    return rb_str_to_inum(str, base, base==0);
-}
-
-static VALUE
-big_shift3(VALUE x, int lshift_p, size_t shift_numdigits, int shift_numbits)
-{
-    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 VALUE
-big_shift2(VALUE x, int lshift_p, VALUE y)
-{
-    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 VALUE
-big_lshift(VALUE x, unsigned long shift)
-{
-    long s1 = shift/BITSPERDIG;
-    int s2 = (int)(shift%BITSPERDIG);
-    return big_shift3(x, 1, s1, s2);
-}
-
-static VALUE
-big_rshift(VALUE x, unsigned long shift)
-{
-    long s1 = shift/BITSPERDIG;
-    int s2 = (int)(shift%BITSPERDIG);
-    return big_shift3(x, 0, s1, s2);
-}
-
-#define MAX_BASE36_POWER_TABLE_ENTRIES (SIZEOF_SIZE_T * CHAR_BIT + 1)
-
-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)
-{
-}
-
-static inline VALUE
-power_cache_get_power(int base, int power_level, size_t *numdigits_ret)
-{
-    /*
-     * 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;
-}
-
-struct big2str_struct {
-    int negative;
+big2str(x, base)
+    VALUE x;
     int base;
-    BDIGIT_DBL hbase2;
-    int hbase2_numdigits;
-    VALUE result;
-    char *ptr;
-};
-
-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++ = '-';
-}
-
-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);
-    }
-    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;
-}
-
-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 (power_level == 0) {
-	big2str_2bdigits(b2s, xds, xn, taillen);
-        return;
-    }
-
-    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);
-    }
-
-    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 {
-        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);
-    }
-}
-
-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;
-}
-
-VALUE
-rb_big2str_poweroftwo(VALUE x, int base)
-{
-    return big2str_base_poweroftwo(x, base);
-}
-
-static VALUE
-big2str_generic(VALUE x, int base)
-{
-    BDIGIT *xds;
-    size_t xn;
-    struct big2str_struct b2s_data;
-    int power_level;
-    VALUE power;
-
-    xds = BDIGITS(x);
-    xn = BIGNUM_LEN(x);
-    BARY_TRUNC(xds, xn);
+    VALUE t;
+    USHORT *ds;
+    UINT i, j, hbase;
+    VALUE ss;
+    UCHAR *s, c;
 
-    if (xn == 0) {
-	return rb_usascii_str_new2("0");
+    if (FIXNUM_P(x)) {
+	return fix2str(x, base);
     }
-
-    if (!valid_radix_p(base))
-	invalid_radix(base);
-
-    if (xn >= LONG_MAX/BITSPERDIG) {
-        rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
+    i = RBIGNUM(x)->len;
+    if (i == 0) return str_new2("0");
+    if (base == 10) {
+	j = (sizeof(USHORT)/sizeof(char)*CHAR_BIT*i*241L)/800+2;
+	hbase = 10000;
     }
-
-    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);
+    else if (base == 16) {
+	j = (sizeof(USHORT)/sizeof(char)*CHAR_BIT*i)/4+2;
+	hbase = 0x10000;
     }
-    assert(power_level != MAX_BASE36_POWER_TABLE_ENTRIES);
-
-    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++;
+    else if (base == 8) {
+	j = (sizeof(USHORT)/sizeof(char)*CHAR_BIT*i)+2;
+	hbase = 010000;
     }
-
-    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;
-
-    if (power_level == 0) {
-	big2str_2bdigits(&b2s_data, xds, xn, 0);
+    else if (base == 2) {
+	j = (sizeof(USHORT)*CHAR_BIT*i)+2;
+	hbase = 020;
     }
     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);
+	j = 0;
+	hbase = 0;
+	Fail("bignum cannot treat base %d", base);
     }
-    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_big2str_generic(VALUE x, int base)
-{
-    return big2str_generic(x, base);
-}
-
-#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);
-
-    mpz_init(mx);
-    bdigits_to_mpz(mx, xds, xn);
 
-    size = mpz_sizeinbase(mx, base);
+    t = big_clone(x);
+    ds = BDIGITS(t);
+    ss = str_new(0, j);
+    s = RSTRING(ss)->ptr;
 
-    if (BIGNUM_NEGATIVE_P(x)) {
-        mpz_neg(mx, mx);
-        str = rb_usascii_str_new(0, size+1);
-    }
-    else {
-        str = rb_usascii_str_new(0, size);
-    }
-    mpz_get_str(RSTRING_PTR(str), base, mx);
-    mpz_clear(mx);
-
-    if (RSTRING_PTR(str)[RSTRING_LEN(str)-1] == '\0') {
-        rb_str_set_len(str, RSTRING_LEN(str)-1);
+    s[0] = RBIGNUM(x)->sign ? '+' : '-';
+    while (i && j) {
+	int k = i;
+	unsigned long num = 0;
+	while (k--) {
+	    num = BIGUP(num) + ds[k];
+	    ds[k] = num / hbase;
+	    num %= hbase;
+	}
+	if (ds[i-1] == 0) i--;
+	k = 4;
+	while (k--) {
+	    c = num % base;
+	    s[--j] = hexmap[(int)c];
+	    num /= base;
+	    if (i == 0 && num == 0) break;
+	}
     }
+    while (s[j] == '0') j++;
+    RSTRING(ss)->len -= RBIGNUM(x)->sign?j:j-1;
+    memmove(RBIGNUM(x)->sign?s:s+1, s+j, RSTRING(ss)->len);
+    s[RSTRING(ss)->len] = '\0';
 
-    RB_GC_GUARD(x);
-    return str;
-}
-
-VALUE
-rb_big2str_gmp(VALUE x, int base)
-{
-    return big2str_gmp(x, base);
+    return ss;
 }
-#endif
 
 static VALUE
-rb_big2str1(VALUE x, int base)
-{
-    BDIGIT *xds;
-    size_t xn;
-
-    if (FIXNUM_P(x)) {
-	return rb_fix2str(x, base);
-    }
-
-    bigtrunc(x);
-    xds = BDIGITS(x);
-    xn = BIGNUM_LEN(x);
-    BARY_TRUNC(xds, xn);
-
-    if (xn == 0) {
-	return rb_usascii_str_new2("0");
-    }
-
-    if (!valid_radix_p(base))
-	invalid_radix(base);
-
-    if (xn >= LONG_MAX/BITSPERDIG) {
-        rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
-    }
-
-    if (POW2_P(base)) {
-        /* base == 2 || base == 4 || base == 8 || base == 16 || base == 32 */
-        return big2str_base_poweroftwo(x, base);
-    }
-
-#ifdef USE_GMP
-    if (GMP_BIG2STR_DIGITS < xn) {
-        return big2str_gmp(x, base);
-    }
-#endif
-
-    return big2str_generic(x, base);
-}
-
-VALUE
-rb_big2str(VALUE x, int base)
+big_to_s(x)
+    VALUE x;
 {
-    return rb_big2str1(x, base);
+    return big2str(x, 10);
 }
 
-static unsigned long
-big2ulong(VALUE x, const char *type)
+INT
+big2int(x)
+    VALUE x;
 {
-#if SIZEOF_LONG > SIZEOF_BDIGIT
-    size_t i;
-#endif
-    size_t len = BIGNUM_LEN(x);
-    unsigned long num;
-    BDIGIT *ds;
+    UINT num;
+    UINT len = RBIGNUM(x)->len;
+    USHORT *ds;
 
-    if (len == 0)
-        return 0;
-    if (BIGSIZE(x) > sizeof(long)) {
-        rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
-    }
+    if (len > sizeof(INT)/sizeof(USHORT))
+	ArgError("bignum too big to convert into `int'");
     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;
-}
-
-unsigned long
-rb_big2ulong(VALUE x)
-{
-    unsigned long num = big2ulong(x, "unsigned long");
-
-    if (BIGNUM_POSITIVE_P(x)) {
-        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");
-}
-
-long
-rb_big2long(VALUE x)
-{
-    unsigned long num = big2ulong(x, "long");
-
-    if (BIGNUM_POSITIVE_P(x)) {
-        if (num <= LONG_MAX)
-            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
-
-static unsigned LONG_LONG
-big2ull(VALUE x, const char *type)
-{
-#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 == 0)
-        return 0;
-    if (BIGSIZE(x) > SIZEOF_LONG_LONG)
-	rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
-#if SIZEOF_LONG_LONG <= SIZEOF_BDIGIT
-    num = (unsigned LONG_LONG)ds[0];
-#else
     num = 0;
-    for (i = 0; i < len; i++) {
+    while (len--) {
 	num = BIGUP(num);
-        num += ds[len - i - 1];
-    }
-#endif
-    return num;
-}
-
-unsigned LONG_LONG
-rb_big2ull(VALUE x)
-{
-    unsigned LONG_LONG num = big2ull(x, "unsigned long long");
-
-    if (BIGNUM_POSITIVE_P(x)) {
-        return num;
+	num += ds[len];
     }
-    else {
-        if (num <= 1+(unsigned LONG_LONG)(-(LLONG_MIN+1)))
-            return -(LONG_LONG)(num-1)-1;
+    if ((INT)num < 0) {
+	ArgError("bignum too big to convert into `int'");
     }
-    rb_raise(rb_eRangeError, "bignum out of range of unsigned long long");
+    if (!RBIGNUM(x)->sign) return -num;
+    return num;
 }
 
-LONG_LONG
-rb_big2ll(VALUE x)
+VALUE
+big_to_i(x)
+    VALUE x;
 {
-    unsigned LONG_LONG num = big2ull(x, "long long");
-
-    if (BIGNUM_POSITIVE_P(x)) {
-        if (num <= LLONG_MAX)
-            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'");
+    return bignorm(x);
 }
 
-#endif  /* HAVE_LONG_LONG */
-
-static VALUE
-dbl2big(double d)
+VALUE
+dbl2big(d)
+    double d;
 {
-    long i = 0;
-    BDIGIT c;
-    BDIGIT *digits;
+    UINT i = 0;
+    long c;
+    USHORT *digits;
     VALUE z;
     double u = (d < 0)?-d:d;
 
-    if (isinf(d)) {
-	rb_raise(rb_eFloatDomainError, d < 0 ? "-Infinity" : "Infinity");
-    }
-    if (isnan(d)) {
-	rb_raise(rb_eFloatDomainError, "NaN");
-    }
-
-    while (1.0 <= u) {
+    while (0 != (long)u) {
 	u /= (double)(BIGRAD);
 	i++;
     }
@@ -5236,1952 +390,899 @@ dbl2big(double d)
     digits = BDIGITS(z);
     while (i--) {
 	u *= BIGRAD;
-	c = (BDIGIT)u;
+	c = (long)u;
 	u -= c;
 	digits[i] = c;
     }
 
-    return z;
-}
-
-VALUE
-rb_dbl2big(double d)
-{
-    return bignorm(dbl2big(d));
-}
-
-static double
-big2dbl(VALUE x)
-{
-    double d = 0.0;
-    long i = (bigtrunc(x), BIGNUM_LEN(x)), lo = 0, bits;
-    BDIGIT *ds = BDIGITS(x), dl;
-
-    if (i) {
-	bits = i * BITSPERDIG - nlz(ds[i-1]);
-	if (bits > DBL_MANT_DIG+DBL_MAX_EXP) {
-	    d = HUGE_VAL;
-	}
-	else {
-	    if (bits > DBL_MANT_DIG+1)
-		lo = (bits -= DBL_MANT_DIG+1) / BITSPERDIG;
-	    else
-		bits = 0;
-	    while (--i > lo) {
-		d = ds[i] + BIGRAD*d;
-	    }
-	    dl = ds[i];
-	    if (bits && (dl & ((BDIGIT)1 << (bits %= BITSPERDIG)))) {
-		int carry = (dl & ~(BDIGMAX << bits)) != 0;
-		if (!carry) {
-		    while (i-- > 0) {
-			carry = ds[i] != 0;
-			if (carry) break;
-		    }
-		}
-		if (carry) {
-                    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) {
-		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 (BIGNUM_NEGATIVE_P(x)) d = -d;
-    return d;
+    return bignorm(z);
 }
 
 double
-rb_big2dbl(VALUE x)
+big2dbl(x)
+    VALUE x;
 {
-    double d = big2dbl(x);
+    double d = 0.0;
+    UINT i = RBIGNUM(x)->len;
+    USHORT *ds = BDIGITS(x);
 
-    if (isinf(d)) {
-	rb_warning("Bignum out of Float range");
-	if (d < 0.0)
-	    d = -HUGE_VAL;
-	else
-	    d = HUGE_VAL;
+    while (i--) {
+	d = ds[i] + BIGRAD*d;
     }
+    if (!RBIGNUM(x)->sign) d = -d;
     return d;
 }
 
 VALUE
-rb_integer_float_cmp(VALUE x, VALUE y)
-{
-    double yd = RFLOAT_VALUE(y);
-    double yi, yf;
-    VALUE rel;
-
-    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)
+big_to_f(x)
+    VALUE 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);
+    return float_new(big2dbl(x));
 }
 
-
-VALUE
-rb_big_cmp(VALUE x, VALUE y)
-{
-    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);
-}
-
-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)
+big_cmp(x, y)
+    VALUE x, y;
 {
-    VALUE rel;
-    int n;
+    int xlen = RBIGNUM(x)->len;
 
-    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);
-    }
+    switch (TYPE(y)) {
+      case T_FIXNUM:
+	y = int2big(FIX2INT(y));
+	break;
 
-    if (NIL_P(rel)) return Qfalse;
-    n = FIX2INT(rel);
+      case T_BIGNUM:
+	break;
 
-    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;
+      default:
+	return num_coerce_bin(x, y);
     }
-    return Qundef;
-}
-
-VALUE
-rb_big_gt(VALUE x, VALUE y)
-{
-    return big_op(x, y, big_op_gt);
-}
 
-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);
-}
+    if (RBIGNUM(x)->sign > RBIGNUM(y)->sign) return INT2FIX(1);
+    if (RBIGNUM(x)->sign < RBIGNUM(y)->sign) return INT2FIX(-1);
+    if (xlen < RBIGNUM(y)->len)
+	return (RBIGNUM(x)->sign) ? INT2FIX(-1) : INT2FIX(1);
+    if (xlen > RBIGNUM(y)->len)
+	return (RBIGNUM(x)->sign) ? INT2FIX(1) : INT2FIX(-1);
 
-VALUE
-rb_big_le(VALUE x, VALUE y)
-{
-    return big_op(x, y, big_op_le);
+    while(xlen-- && (BDIGITS(x)[xlen]==BDIGITS(y)[xlen]));
+    if (-1 == xlen) return INT2FIX(0);
+    return (BDIGITS(x)[xlen] > BDIGITS(y)[xlen]) ?
+	(RBIGNUM(x)->sign ? INT2FIX(1) : INT2FIX(-1)) :
+	    (RBIGNUM(x)->sign ? INT2FIX(-1) : INT2FIX(1));
 }
 
-/*
- *  call-seq:
- *     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 Integer#eql?, which requires
- *  <i>obj</i> to be a Integer.
- *
- *     68719476736 == 68719476736.0   #=> true
- */
-
-VALUE
-rb_big_eq(VALUE x, VALUE y)
-{
-    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 (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;
-}
-
-VALUE
-rb_big_eql(VALUE x, VALUE y)
+static VALUE
+big_eq(x, y)
+    VALUE x, y;
 {
-    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;
+    if (big_cmp(x, y) == INT2FIX(0)) return TRUE;
+    return FALSE;
 }
 
-VALUE
-rb_big_uminus(VALUE x)
+static VALUE
+big_uminus(x)
+    VALUE x;
 {
-    VALUE z = rb_big_clone(x);
+    VALUE z = big_clone(x);
 
-    BIGNUM_NEGATE(z);
+    RBIGNUM(z)->sign = !RBIGNUM(x)->sign;
 
     return bignorm(z);
 }
 
-VALUE
-rb_big_comp(VALUE x)
+static VALUE
+big_neg(x)
+    VALUE x;
 {
-    VALUE z = rb_big_clone(x);
-    BDIGIT *ds = BDIGITS(z);
-    long n = BIGNUM_LEN(z);
+    VALUE z = big_clone(x);
+    UINT i = RBIGNUM(x)->len;
+    USHORT *ds = BDIGITS(z);
 
-    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);
-    }
+    if (!RBIGNUM(x)->sign) big_2comp(z);
+    while (i--) ds[i] = ~ds[i];
+    if (RBIGNUM(x)->sign) big_2comp(z);
+    RBIGNUM(z)->sign = !RBIGNUM(z)->sign;
 
     return bignorm(z);
 }
 
 static VALUE
-bigsub(VALUE x, VALUE y)
-{
-    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);
+bigsub(x, y)
+    VALUE x, y;
+{
+    VALUE z = 0;
+    USHORT *zds;
+    long num;
+    UINT i;
+
+    i = RBIGNUM(x)->len;
+    /* if x is larger than y, swap */
+    if (RBIGNUM(x)->len < RBIGNUM(y)->len) {
+	z = x; x = y; y = z;	/* swap x y */
+    }
+    else if (RBIGNUM(x)->len == RBIGNUM(y)->len) {
+	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;
+	    }
+	}
     }
 
-    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, y;
-
-    y = y0;
-    xds = BDIGITS(x);
-    xn = BIGNUM_LEN(x);
-
-    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));
+    z = bignew(RBIGNUM(x)->len, (z == 0)?1:0);
     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);
+    for (i = 0, num = 0; i < RBIGNUM(y)->len; i++) { 
+	num += (long)BDIGITS(x)[i] - BDIGITS(y)[i];
 	zds[i] = BIGLO(num);
 	num = BIGDN(num);
-	y = BIGDN(y);
-    }
-    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
-
-    for (; i < xn; i++) {
-      y_is_zero_x:
-        if (num == 0) goto num_is_zero_x;
-	num += xds[i];
-	zds[i] = BIGLO(num);
+    } 
+    while (num && i < RBIGNUM(x)->len) {
+	num += BDIGITS(x)[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);
+    while (i < RBIGNUM(x)->len) {
+	zds[i] = BDIGITS(x)[i];
+	i++;
     }
-    RB_GC_GUARD(x);
+    
     return bignorm(z);
 }
 
 static VALUE
-bigadd_int(VALUE x, long y)
+bigadd(x, y, sign)
+    VALUE x, y;
+    char sign;
 {
     VALUE z;
-    BDIGIT *xds, *zds;
-    long xn, zn;
-    BDIGIT_DBL num;
-    long i;
-
-    xds = BDIGITS(x);
-    xn = BIGNUM_LEN(x);
+    long num;
+    UINT i, len;
 
-    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);
+    if (RBIGNUM(x)->sign == (RBIGNUM(y)->sign ^ sign)) {
+	if (RBIGNUM(y)->sign == sign) return bigsub(y, x);
+	return bigsub(x, y);
+    }
 
-#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);
+    if (RBIGNUM(x)->len > RBIGNUM(y)->len) {
+	len = RBIGNUM(x)->len + 1;
+        z = x; x = y; y = z;
     }
-    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);
+    else {
+	len = RBIGNUM(y)->len + 1;
     }
-    goto finish;
-
-#endif
+    z = bignew(len, sign==RBIGNUM(y)->sign);
 
-    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);
+    len = RBIGNUM(x)->len;
+    for (i = 0, num = 0; i < len; i++) {
+	num += (long)(BDIGITS(x)[i] + BDIGITS(y)[i]);
+	BDIGITS(z)[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);
+    len = RBIGNUM(y)->len;
+    while (num && i < len) {
+	num += BDIGITS(y)[i];
+	BDIGITS(z)[i++] = BIGLO(num);
 	num = BIGDN(num);
     }
-    goto finish;
-
-    for (;i < xn; i++) {
-      num_is_zero_x:
-	zds[i] = xds[i];
-    }
-    for (; i < zn; i++) {
-      num_is_zero_z:
-	zds[i] = 0;
+    while (i < len) {
+	BDIGITS(z)[i] = BDIGITS(y)[i];
+	i++;
     }
-    goto finish;
+    BDIGITS(z)[i] = num;
 
-  finish:
-    RB_GC_GUARD(x);
     return bignorm(z);
 }
 
-static VALUE
-bigadd(VALUE x, VALUE y, int sign)
+VALUE
+big_plus(x, y)
+    VALUE x, y;
 {
-    VALUE z;
-    size_t len;
+    switch (TYPE(y)) {
+      case T_FIXNUM:
+	y = int2big(FIX2INT(y));
+	/* fall through */
+      case T_BIGNUM:
+	return bigadd(x, y, 1);
 
-    sign = (sign == BIGNUM_SIGN(y));
-    if (BIGNUM_SIGN(x) != sign) {
-	if (sign) return bigsub(y, x);
-	return bigsub(x, y);
-    }
+      case T_FLOAT:
+	return float_new(big2dbl(x) + RFLOAT(y)->value);
 
-    if (BIGNUM_LEN(x) > BIGNUM_LEN(y)) {
-	len = BIGNUM_LEN(x) + 1;
+      default:
+	return num_coerce_bin(x, y);
     }
-    else {
-	len = BIGNUM_LEN(y) + 1;
-    }
-    z = bignew(len, sign);
-
-    bary_add(BDIGITS(z), BIGNUM_LEN(z),
-             BDIGITS(x), BIGNUM_LEN(x),
-             BDIGITS(y), BIGNUM_LEN(y));
-
-    return z;
 }
 
 VALUE
-rb_big_plus(VALUE x, VALUE y)
+big_minus(x, y)
+    VALUE x, y;
 {
-    long n;
-
-    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));
-    }
-    else {
-	return rb_num_coerce_bin(x, y, '+');
-    }
-}
+    switch (TYPE(y)) {
+      case T_FIXNUM:
+	y = int2big(FIX2INT(y));
+	/* fall through */
+      case T_BIGNUM:
+	return bigadd(x, y, 0);
 
-VALUE
-rb_big_minus(VALUE x, VALUE y)
-{
-    long n;
+      case T_FLOAT:
+	return float_new(big2dbl(x) - RFLOAT(y)->value);
 
-    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));
-    }
-    else {
-	return rb_num_coerce_bin(x, y, '-');
+      default:
+	return num_coerce_bin(x, y);
     }
 }
 
-static VALUE
-bigsq(VALUE x)
+VALUE
+big_mul(x, y)
+    VALUE x, y;
 {
-    long xn, zn;
+    UINT i = 0, j;
+    unsigned long n = 0;
     VALUE z;
-    BDIGIT *xds, *zds;
-
-    xn = BIGNUM_LEN(x);
-    zn = 2 * xn;
-
-    z = bignew(zn, 1);
-
-    xds = BDIGITS(x);
-    zds = BDIGITS(z);
-
-    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;
-}
+    USHORT *zds;
 
-static VALUE
-bigmul0(VALUE x, VALUE y)
-{
-    long xn, yn, zn;
-    VALUE z;
-    BDIGIT *xds, *yds, *zds;
+    if (FIXNUM_P(x)) x = int2big(FIX2INT(x));
+    switch (TYPE(y)) {
+      case T_FIXNUM:
+	y = int2big(FIX2INT(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 float_new(big2dbl(x) * RFLOAT(y)->value);
 
-    z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+      default:
+	return num_coerce_bin(x, y);
+    }
 
-    xds = BDIGITS(x);
-    yds = BDIGITS(y);
+    j = RBIGNUM(x)->len + RBIGNUM(y)->len + 1;
+    z = bignew(j, RBIGNUM(x)->sign==RBIGNUM(y)->sign);
     zds = BDIGITS(z);
-
-    bary_mul(zds, zn, xds, xn, yds, yn);
-
-    RB_GC_GUARD(x);
-    RB_GC_GUARD(y);
-    return z;
-}
-
-VALUE
-rb_big_mul(VALUE x, VALUE y)
-{
-    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, '*');
+    while (j--) zds[j] = 0;
+    for (i = 0; i < RBIGNUM(x)->len; i++) {
+	unsigned long dd = BDIGITS(x)[i]; 
+	if (dd == 0) continue;
+	n = 0;
+	for (j = 0; j < RBIGNUM(y)->len; j++) {
+	    int ee = n + 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;
+	}
     }
 
-    return bignorm(bigmul0(x, y));
+    return bignorm(z);
 }
 
-static VALUE
-bigdivrem(VALUE x, VALUE y, volatile VALUE *divp, volatile VALUE *modp)
-{
-    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;
+static void
+bigdivmod(x, y, div, mod, modulo)
+    VALUE x, y;
+    VALUE *div, *mod;
+    int modulo;
+{
+    UINT nx = RBIGNUM(x)->len, ny = RBIGNUM(y)->len, i, j;
+    VALUE yy, z;
+    USHORT *xds, *yds, *zds, *tds;
+    unsigned long t2;
+    long num;
+    USHORT dd, q;
 
     yds = BDIGITS(y);
-    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;
+    if (ny == 0 && yds[0] == 0) num_zerodiv();
+    if (nx < ny	|| nx == ny && BDIGITS(x)[nx - 1] < BDIGITS(y)[ny - 1]) {
+	if (div) *div = INT2FIX(0);
+	if (mod) *mod = bignorm(x);
+	return;
     }
-    if (yn == 1) {
+    xds = BDIGITS(x);
+    if (ny == 1) {
 	dd = yds[0];
-	z = bignew(xn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
+	z = big_clone(x);
 	zds = BDIGITS(z);
-        dd = bigdivrem_single(zds, xds, xn, dd);
-	if (modp) {
-	    *modp = rb_uint2big((uintptr_t)dd);
-	    BIGNUM_SET_SIGN(*modp, BIGNUM_SIGN(x));
+	t2 = 0; i = nx;
+	while (i--) {
+	    t2 = BIGUP(t2) + zds[i];
+	    zds[i] = t2 / dd;
+	    t2 %= dd;
 	}
-	if (divp) *divp = z;
-	return Qnil;
-    }
-    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 {
-        qn = 0;
-        qds = NULL;
+	if (div) *div = bignorm(z);
+	if (mod) {
+	    if (!RBIGNUM(y)->sign) t2 = -t2;
+	    *mod = INT2FIX(t2);
+	}
+	return;
     }
-
-    if (modp) {
-        rn = yn;
-        r = bignew(rn, BIGNUM_SIGN(x));
-        rds = BDIGITS(r);
+    z = bignew(nx==ny?nx+2:nx+1, RBIGNUM(x)->sign==RBIGNUM(y)->sign);
+    zds = BDIGITS(z);
+    if (nx==ny) zds[nx+1] = 0;
+    while (!yds[ny-1]) ny--;
+    if ((dd = BIGRAD/(int)(yds[ny-1]+1)) != 1) {
+	yy = big_clone(y);
+	tds = BDIGITS(yy);
+	j = 0;
+	num = 0;
+	while (j<ny) {
+	    num += (unsigned long)yds[j]*dd;
+	    tds[j++] = BIGLO(num);
+	    num = BIGDN(num);
+	}
+	yds = tds;
+	j = 0;
+	num = 0;
+	while (j<nx) {
+	    num += (unsigned long)xds[j]*dd;
+	    zds[j++] = BIGLO(num);
+	    num = BIGDN(num);
+	}
+	zds[j] = num;
     }
     else {
-        rn = 0;
-        rds = NULL;
-    }
-
-    bary_divmod_branch(qds, qn, rds, rn, xds, xn, yds, yn);
-
-    if (divp) {
-        bigtrunc(q);
-        *divp = q;
-    }
-    if (modp) {
-        bigtrunc(r);
-        *modp = r;
-    }
-
-    return Qnil;
-}
-
-static void
-bigdivmod(VALUE x, VALUE y, volatile VALUE *divp, volatile VALUE *modp)
-{
-    VALUE mod;
-
-    bigdivrem(x, y, divp, &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);
+	zds[nx] = 0;
+	j = nx;
+	while (j--) zds[j] = xds[j];
     }
-    else if (modp) {
-	*modp = mod;
+    j = nx==ny?nx+1:nx;
+    do {
+	if (zds[j] ==  yds[ny-1]) q = BIGRAD-1;
+	else q = (BIGUP(zds[j]) + zds[j-1])/yds[ny-1];
+	if (q) {
+	    i = 0; num = 0; t2 = 0;
+	    do {			/* multiply and subtract */
+		int ee;
+		t2 += (unsigned long)yds[i] * q;
+		ee = num - BIGLO(t2);
+		num = 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 {
+		    int ee = num + yds[i];
+		    num = (long) 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);
+    if (div) {			/* move quotient down in z */
+	*div = big_clone(z);
+	zds = BDIGITS(*div);
+	j = (nx==ny ? nx+2 : nx+1) - ny;
+	for (i = 0;i < j;i++) zds[i] = zds[i+ny];
+	RBIGNUM(*div)->len = i;
+	*div = bignorm(*div);
+    }
+    if (mod) {			/* just normalize remainder */
+	*mod = big_clone(z);
+	if (dd) {
+	    zds = BDIGITS(*mod);
+	    t2 = 0; i = ny;
+	    while(i--) {
+		t2 = BIGUP(t2) + zds[i];
+		zds[i] = t2 / dd;
+		t2 %= dd;
+	    }
+	}
+	RBIGNUM(*mod)->len = ny;
+	RBIGNUM(*mod)->sign = RBIGNUM(x)->sign;
+	if (modulo && RBIGNUM(x)->sign != RBIGNUM(y)->sign) {
+	    int len = ny;
+	    zds = BDIGITS(*mod);
+	    while (len-- && !zds[len]);
+	    if (len > 0) {
+		*mod = bigadd(*mod, y, 1);
+		return;
+	    }
+	}
+	*mod = bignorm(*mod);
     }
 }
 
-
 static VALUE
-rb_big_divide(VALUE x, VALUE y, ID op)
+big_div(x, y)
+    VALUE x, y;
 {
     VALUE z;
 
-    if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
-    }
-    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);
-	}
-	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);
+    switch (TYPE(y)) {
+      case T_FIXNUM:
+	y = int2big(FIX2INT(y));
+	break;
 
-    return bignorm(z);
-}
-
-VALUE
-rb_big_div(VALUE x, VALUE y)
-{
-    return rb_big_divide(x, y, '/');
-}
-
-VALUE
-rb_big_idiv(VALUE x, VALUE y)
-{
-    return rb_big_divide(x, y, idDiv);
-}
+      case T_BIGNUM:
+	break;
 
-VALUE
-rb_big_modulo(VALUE x, VALUE y)
-{
-    VALUE z;
+      case T_FLOAT:
+	return float_new(big2dbl(x) / RFLOAT(y)->value);
 
-    if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
-    }
-    else if (!RB_BIGNUM_TYPE_P(y)) {
-	return rb_num_coerce_bin(x, y, '%');
+      default:
+	return num_coerce_bin(x, y);
     }
-    bigdivmod(x, y, 0, &z);
+    bigdivmod(x, y, &z, 0, 0);
 
-    return bignorm(z);
+    return z;
 }
 
-VALUE
-rb_big_remainder(VALUE x, VALUE y)
+
+static VALUE
+big_modulo(x, y, modulo)
+    VALUE x, y;
+    int modulo;
 {
     VALUE z;
 
-    if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
-    }
-    else if (!RB_BIGNUM_TYPE_P(y)) {
-	return rb_num_coerce_bin(x, y, rb_intern("remainder"));
-    }
-    bigdivrem(x, y, 0, &z);
+    switch (TYPE(y)) {
+      case T_FIXNUM:
+	y = int2big(FIX2INT(y));
+	break;
 
-    return bignorm(z);
-}
+      case T_BIGNUM:
+	break;
 
-VALUE
-rb_big_divmod(VALUE x, VALUE y)
-{
-    VALUE div, mod;
+      case T_FLOAT:
+	y = dbl2big(RFLOAT(y)->value);
+	break;
 
-    if (FIXNUM_P(y)) {
-	y = rb_int2big(FIX2LONG(y));
+      default:
+	return num_coerce_bin(x, y);
     }
-    else if (!RB_BIGNUM_TYPE_P(y)) {
-        return rb_num_coerce_bin(x, y, idDivmod);
-    }
-    bigdivmod(x, y, &div, &mod);
+    bigdivmod(x, y, 0, &z, modulo);
 
-    return rb_assoc_new(bignorm(div), bignorm(mod));
+    return z;
 }
 
 static VALUE
-big_shift(VALUE x, long n)
+big_mod(x, y)
+    VALUE x, y;
 {
-    if (n < 0)
-	return big_lshift(x, 1+(unsigned long)(-(n+1)));
-    else if (n > 0)
-	return big_rshift(x, (unsigned long)n);
-    return x;
+    return big_modulo(x, y, 1);
 }
 
-enum {DBL_BIGDIG = ((DBL_MANT_DIG + BITSPERDIG) / BITSPERDIG)};
-
-static double
-big_fdiv(VALUE x, VALUE y, long ey)
+static VALUE
+big_remainder(x, y)
+    VALUE x, y;
 {
-    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;
-    }
-#endif
-    return ldexp(big2dbl(z), (int)l);
+    return big_modulo(x, y, 0);
 }
 
-static double
-big_fdiv_int(VALUE x, VALUE y)
+static VALUE
+big_divmod(x, y)
+    VALUE x, 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);
-}
+    VALUE div, mod;
 
-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);
-}
+    switch (TYPE(y)) {
+      case T_FIXNUM:
+	y = int2big(FIX2INT(y));
+	break;
 
-double
-rb_big_fdiv_double(VALUE x, VALUE y)
-{
-    double dx, dy;
-    VALUE v;
+      case T_FLOAT:
+	y = dbl2big(RFLOAT(y)->value);
+	break;
 
-    dx = big2dbl(x);
-    if (FIXNUM_P(y)) {
-	dy = (double)FIX2LONG(y);
-	if (isinf(dx))
-	    return big_fdiv_int(x, rb_int2big(FIX2LONG(y)));
-    }
-    else if (RB_BIGNUM_TYPE_P(y)) {
-	return big_fdiv_int(x, y);
-    }
-    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));
+      case T_BIGNUM:
+	break;
+
+      default:
+	return num_coerce_bin(x, y);
     }
-    v = rb_flo_div_flo(DBL2NUM(dx), DBL2NUM(dy));
-    return NUM2DBL(v);
-}
+    bigdivmod(x, y, &div, &mod, 1);
 
-VALUE
-rb_big_fdiv(VALUE x, VALUE y)
-{
-    return DBL2NUM(rb_big_fdiv_double(x, y));
+    return assoc_new(div, mod);;
 }
 
 VALUE
-rb_big_pow(VALUE x, VALUE y)
+big_pow(x, y)
+    VALUE x, y;
 {
     double d;
-    SIGNED_VALUE yy;
-
-  again:
-    if (y == INT2FIX(0)) return INT2FIX(1);
-    if (y == INT2FIX(1)) return x;
-    if (RB_FLOAT_TYPE_P(y)) {
-	d = RFLOAT_VALUE(y);
-	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);
-    }
-    else if (FIXNUM_P(y)) {
-	yy = FIX2LONG(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 size_t xbits = rb_absint_numwords(x, 1, NULL);
-	    const size_t BIGLEN_LIMIT = 32*1024*1024;
-
-	    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;
-	    }
-	    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);
-	    }
-	}
-    }
-    else {
-	return rb_num_coerce_bin(x, y, idPow);
-    }
-    return DBL2NUM(pow(rb_big2dbl(x), d));
-}
-
-static VALUE
-bigand_int(VALUE x, long xn, BDIGIT hibitsx, long y)
-{
     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);
-    }
-#endif
+    
+    if (y == INT2FIX(0)) return INT2FIX(1);
+    switch (TYPE(y)) {
+      case T_FLOAT:
+	d = RFLOAT(y)->value;
+	break;
 
-    zn = xn;
-#if SIZEOF_BDIGIT < SIZEOF_LONG
-    if (hibitsx && zn < bdigit_roomof(SIZEOF_LONG))
-        zn = bdigit_roomof(SIZEOF_LONG);
-#endif
+      case T_BIGNUM:
+	if (RBIGNUM(y)->sign) goto pos_big;
+	d = big2dbl(y);
+	break;
 
-    z = bignew(zn, 0);
-    zds = BDIGITS(z);
+      case T_FIXNUM:
+	if (FIX2INT(y) > 0) goto pos_big;
+	d = (double)FIX2INT(y);
+	break;
 
-#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);
+      default:
+	return num_coerce_bin(x, y);
     }
-    for (; i < zn; i++) {
-        if (y == 0 || y == -1) break;
-        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;
+    return float_new(pow(big2dbl(x), d));
+
+  pos_big:
+    z = x;
+    for (;;) {
+	y = rb_funcall(y, '-', 1, INT2FIX(1));
+	if (y == INT2FIX(0)) break;
+	while (rb_funcall(y, '%', 1, INT2FIX(2)) == INT2FIX(0)) {
+	    y = rb_funcall(y, '/', 1, INT2FIX(2));
+	    x = big_mul(x, x);
+	}
+	z = big_mul(z, x);
     }
-    twocomp2abs_bang(z, hibitsx && hibitsy);
-    RB_GC_GUARD(x);
-    return bignorm(z);
+    return z;
 }
 
 VALUE
-rb_big_and(VALUE x, VALUE y)
+big_and(x, y)
+    VALUE x, 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, '&');
-    }
+    USHORT *ds1, *ds2, *zds;
+    UINT i, l1, l2;
+    char sign;
 
-    hibitsx = abs2twocomp(&x, &xn);
     if (FIXNUM_P(y)) {
-	return bigand_int(x, xn, hibitsx, FIX2LONG(y));
+	y = int2big(FIX2INT(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;
+    else {
+	Check_Type(y, T_BIGNUM);
     }
-    n1 = xn;
-    n2 = yn;
-    ds1 = BDIGITS(x);
-    ds2 = BDIGITS(y);
-    hibits1 = hibitsx;
-    hibits2 = hibitsy;
-
-    if (!hibits1)
-        n2 = n1;
 
-    z = bignew(n2, 0);
+    if (!RBIGNUM(y)->sign) {
+	y = big_clone(y);
+	big_2comp(y);
+    }
+    if (!RBIGNUM(x)->sign) {
+	x = big_clone(x);
+	big_2comp(x);
+    }
+    if (RBIGNUM(x)->len > RBIGNUM(y)->len) {
+	l1 = RBIGNUM(y)->len;
+	l2 = RBIGNUM(x)->len;
+	ds1 = BDIGITS(y);
+	ds2 = BDIGITS(x);
+	sign = RBIGNUM(y)->sign;
+    }
+    else {
+	l1 = RBIGNUM(x)->len;
+	l2 = RBIGNUM(y)->len;
+	ds1 = BDIGITS(x);
+	ds2 = BDIGITS(y);
+	sign = RBIGNUM(x)->sign;
+    }
+    z = bignew(l2, RBIGNUM(x)->sign && RBIGNUM(y)->sign);
     zds = BDIGITS(z);
 
-    for (i=0; i<n1; i++) {
+    for (i=0; i<l1; i++) {
 	zds[i] = ds1[i] & ds2[i];
     }
-    for (; i<n2; i++) {
-	zds[i] = hibits1 & ds2[i];
+    for (; i<l2; i++) {
+	zds[i] = sign?0:ds2[i];
     }
-    twocomp2abs_bang(z, hibits1 && hibits2);
-    RB_GC_GUARD(x);
-    RB_GC_GUARD(y);
+    if (!RBIGNUM(z)->sign) big_2comp(z);
     return bignorm(z);
 }
 
-static VALUE
-bigor_int(VALUE x, long xn, BDIGIT hibitsx, long y)
+VALUE
+big_or(x, y)
+    VALUE x, 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);
+    USHORT *ds1, *ds2, *zds;
+    UINT i, l1, l2;
+    char sign;
 
-#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 (FIXNUM_P(y)) {
+	y = int2big(FIX2INT(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);
+    else {
+	Check_Type(y, T_BIGNUM);
     }
-  goto finish;
-#endif
 
-  y_is_fixed_point:
-    if (hibitsy)
-        goto fill_hibits;
-    for (; i < xn; i++) {
-        zds[i] = xds[i];
+    if (!RBIGNUM(y)->sign) {
+	y = big_clone(y);
+	big_2comp(y);
+    }
+    if (!RBIGNUM(x)->sign) {
+	x = big_clone(x);
+	big_2comp(x);
+    }
+    if (RBIGNUM(x)->len > RBIGNUM(y)->len) {
+	l1 = RBIGNUM(y)->len;
+	l2 = RBIGNUM(x)->len;
+	ds1 = BDIGITS(y);
+	ds2 = BDIGITS(x);
+	sign = RBIGNUM(y)->sign;
     }
-    if (hibitsx)
-        goto fill_hibits;
-    for (; i < zn; i++) {
-        zds[i] = 0;
+    else {
+	l1 = RBIGNUM(x)->len;
+	l2 = RBIGNUM(y)->len;
+	ds1 = BDIGITS(x);
+	ds2 = BDIGITS(y);
+	sign = RBIGNUM(x)->sign;
     }
-  goto finish;
+    z = bignew(l2, RBIGNUM(x)->sign || RBIGNUM(y)->sign);
+    zds = BDIGITS(z);
 
-  fill_hibits:
-    for (; i < zn; i++) {
-        zds[i] = BDIGMAX;
+    for (i=0; i<l1; i++) {
+	zds[i] = ds1[i] | ds2[i];
+    }
+    for (; i<l2; i++) {
+	zds[i] = sign?ds2[i]:(BIGRAD-1);
     }
+    if (!RBIGNUM(z)->sign) big_2comp(z);
 
-  finish:
-    twocomp2abs_bang(z, hibitsx || hibitsy);
-    RB_GC_GUARD(x);
     return bignorm(z);
 }
 
 VALUE
-rb_big_or(VALUE x, VALUE y)
+big_xor(x, y)
+    VALUE x, 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, '|');
-    }
+    USHORT *ds1, *ds2, *zds;
+    UINT i, l1, l2;
+    char sign;
 
-    hibitsx = abs2twocomp(&x, &xn);
     if (FIXNUM_P(y)) {
-	return bigor_int(x, xn, hibitsx, FIX2LONG(y));
+	y = int2big(FIX2INT(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;
+    else {
+	Check_Type(y, T_BIGNUM);
     }
-    n1 = xn;
-    n2 = yn;
-    ds1 = BDIGITS(x);
-    ds2 = BDIGITS(y);
-    hibits1 = hibitsx;
-    hibits2 = hibitsy;
-
-    if (hibits1)
-        n2 = n1;
 
-    z = bignew(n2, 0);
+    if (!RBIGNUM(y)->sign) {
+	y = big_clone(y);
+	big_2comp(y);
+    }
+    if (!RBIGNUM(x)->sign) {
+	x = big_clone(x);
+	big_2comp(x);
+    }
+    if (RBIGNUM(x)->len > RBIGNUM(y)->len) {
+	l1 = RBIGNUM(y)->len;
+	l2 = RBIGNUM(x)->len;
+	ds1 = BDIGITS(y);
+	ds2 = BDIGITS(x);
+	sign = RBIGNUM(y)->sign;
+    }
+    else {
+	l1 = RBIGNUM(x)->len;
+	l2 = RBIGNUM(y)->len;
+	ds1 = BDIGITS(x);
+	ds2 = BDIGITS(y);
+	sign = RBIGNUM(x)->sign;
+    }
+    RBIGNUM(x)->sign = RBIGNUM(x)->sign?1:0;
+    RBIGNUM(y)->sign = RBIGNUM(y)->sign?1:0;
+    z = bignew(l2, !(RBIGNUM(x)->sign ^ RBIGNUM(y)->sign));
     zds = BDIGITS(z);
 
-    for (i=0; i<n1; i++) {
-	zds[i] = ds1[i] | ds2[i];
+    for (i=0; i<l1; i++) {
+	zds[i] = ds1[i] ^ ds2[i];
     }
-    for (; i<n2; i++) {
-	zds[i] = hibits1 | ds2[i];
+    for (; i<l2; i++) {
+	zds[i] = sign?ds2[i]:~ds2[i];
     }
-    twocomp2abs_bang(z, hibits1 || hibits2);
-    RB_GC_GUARD(x);
-    RB_GC_GUARD(y);
+    if (!RBIGNUM(z)->sign) big_2comp(z);
+
     return bignorm(z);
 }
 
-static VALUE
-bigxor_int(VALUE x, long xn, BDIGIT hibitsx, long y)
+static VALUE big_rshift();
+
+VALUE
+big_lshift(x, y)
+    VALUE x, y;
 {
+    USHORT *xds, *zds;
+    int shift = NUM2INT(y);
+    UINT s1 = shift/BITSPERDIG;
+    UINT s2 = shift%BITSPERDIG;
     VALUE z;
-    BDIGIT *xds, *zds;
-    long zn;
-    long i;
-    BDIGIT hibitsy;
+    unsigned long num = 0;
+    UINT len, i;
 
-    hibitsy = 0 <= y ? 0 : BDIGMAX;
+    if (shift < 0) return big_rshift(x, INT2FIX(-shift));
     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);
+    len = RBIGNUM(x)->len;
+    z = bignew(len+s1+1, RBIGNUM(x)->sign);
     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);
+    for (i=0; i<s1; i++) {
+	*zds++ = 0;
     }
-    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;
+    for (i=0; i<len; i++) {
+	num = num | *xds++<<s2;
+	*zds++ = BIGLO(num);
+	num = BIGDN(num);
     }
-    twocomp2abs_bang(z, (hibitsx ^ hibitsy) != 0);
-    RB_GC_GUARD(x);
+    *zds = BIGLO(num);
     return bignorm(z);
 }
 
-VALUE
-rb_big_xor(VALUE x, VALUE y)
+static VALUE
+big_rshift(x, y)
+    VALUE x, y;
 {
+    USHORT *xds, *zds;
+    int shift = NUM2INT(y);
+    UINT s1 = shift/BITSPERDIG;
+    UINT s2 = shift%BITSPERDIG;
     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, '^');
-    }
+    unsigned long num = 0;
+    UINT i = RBIGNUM(x)->len;
+    UINT j;
 
-    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;
+    if (shift < 0) return big_lshift(x, INT2FIX(-shift));
+    if (s1 > RBIGNUM(x)->len) {
+	if (RBIGNUM(x)->sign)
+	    return INT2FIX(0);
+	else
+	    return INT2FIX(-1);
     }
-    n1 = xn;
-    n2 = yn;
-    ds1 = BDIGITS(x);
-    ds2 = BDIGITS(y);
-    hibits1 = hibitsx;
-    hibits2 = hibitsy;
-
-    z = bignew(n2, 0);
+    xds = BDIGITS(x);
+    i = RBIGNUM(x)->len; j = i - s1;
+    z = bignew(j, RBIGNUM(x)->sign);
     zds = BDIGITS(z);
-
-    for (i=0; i<n1; i++) {
-	zds[i] = ds1[i] ^ ds2[i];
-    }
-    for (; i<n2; i++) {
-	zds[i] = hibitsx ^ ds2[i];
+    while (i--, j--) {
+	num = (num | xds[i]) >> s2;
+	zds[j] = BIGLO(num);
+	num = BIGUP(xds[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)
-{
-    int lshift_p;
-    size_t shift_numdigits;
-    int shift_numbits;
-
-    for (;;) {
-	if (FIXNUM_P(y)) {
-	    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));
-	    }
-            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 (RB_BIGNUM_TYPE_P(y)) {
-            return bignorm(big_shift2(x, 1, y));
-	}
-	y = rb_to_int(y);
-    }
-}
-
-VALUE
-rb_big_rshift(VALUE x, VALUE y)
+static VALUE
+big_aref(x, y)
+    VALUE x, y;
 {
-    int lshift_p;
-    size_t shift_numdigits;
-    int shift_numbits;
+    USHORT *xds;
+    int shift = NUM2INT(y);
+    UINT s1, s2;
 
-    for (;;) {
-	if (FIXNUM_P(y)) {
-	    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));
-	    }
-            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 (RB_BIGNUM_TYPE_P(y)) {
-            return bignorm(big_shift2(x, 0, y));
-	}
-	y = rb_to_int(y);
-    }
-}
+    if (shift < 0) return INT2FIX(0);
+    s1 = shift/BITSPERDIG;
+    s2 = shift%BITSPERDIG;
 
-VALUE
-rb_big_aref(VALUE x, VALUE y)
-{
-    BDIGIT *xds;
-    size_t shift;
-    size_t i, s1, s2;
-    long l;
-    BDIGIT bit;
-
-    if (RB_BIGNUM_TYPE_P(y)) {
-	if (BIGNUM_NEGATIVE_P(y))
-	    return INT2FIX(0);
-	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(x)->sign) {
+	if (s1 >= RBIGNUM(x)->len) return INT2FIX(1);
+	x = big_clone(x);
+	big_2comp(x);
     }
     else {
-	l = NUM2LONG(y);
-	if (l < 0) return INT2FIX(0);
-	shift = (size_t)l;
+	if (s1 >= RBIGNUM(x)->len) return INT2FIX(0);
     }
-    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);
-    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);
+    if (xds[s1] & (1<<s2))
+	return INT2FIX(1);
+    return INT2FIX(0);
 }
 
-VALUE
-rb_big_hash(VALUE x)
+static VALUE
+big_hash(x)
+    VALUE x;
 {
-    st_index_t hash;
+    int i, len, key;
+    USHORT *digits;
 
-    hash = rb_memhash(BDIGITS(x), sizeof(BDIGIT)*BIGNUM_LEN(x)) ^ BIGNUM_SIGN(x);
-    return ST2FIX(hash);
+    key = 0; digits = BDIGITS(x);
+    for (i=0,len=RBIGNUM(x)->len; i<RBIGNUM(x)->len; i++) {
+	key ^= *digits++;
+    }
+    return INT2FIX(key);
 }
 
-/*
- * call-seq:
- *   big.coerce(numeric)  ->  array
- *
- * Returns an array with both a +numeric+ and a +big+ represented as Bignum
- * objects.
- *
- * This is achieved by converting +numeric+ to a Bignum.
- *
- * A TypeError is raised if the +numeric+ is not a Fixnum or Bignum type.
- *
- *     (0x3FFFFFFFFFFFFFFF+1).coerce(42)   #=> [42, 4611686018427387904]
- */
-
 static VALUE
-rb_int_coerce(VALUE x, VALUE y)
+big_coerce(x, y)
+    VALUE x, y;
 {
-    if (RB_INTEGER_TYPE_P(y)) {
-        return rb_assoc_new(y, x);
+    if (FIXNUM_P(y)) {
+	return assoc_new(int2big(FIX2INT(y)), x);
     }
     else {
-        x = rb_Float(x);
-        y = rb_Float(y);
-        return rb_assoc_new(y, x);
+	TypeError("can't coerce %s to Bignum", rb_class2name(CLASS_OF(y)));
     }
+    /* not reached */
 }
 
-VALUE
-rb_big_abs(VALUE x)
+static VALUE
+big_abs(x)
+    VALUE x;
 {
-    if (BIGNUM_NEGATIVE_P(x)) {
-	x = rb_big_clone(x);
-	BIGNUM_SET_POSITIVE_SIGN(x);
+    if (!RBIGNUM(x)->sign) {
+	x = big_clone(x);
+	RBIGNUM(x)->sign = 1;
     }
     return x;
 }
 
-int
-rb_big_sign(VALUE x)
-{
-    return BIGNUM_SIGN(x);
-}
-
-size_t
-rb_big_size(VALUE big)
-{
-    return BIGSIZE(big);
-}
-
-VALUE
-rb_big_size_m(VALUE big)
-{
-    return SIZET2NUM(rb_big_size(big));
-}
-
-VALUE
-rb_big_bit_length(VALUE big)
-{
-    int nlz_bits;
-    size_t numbytes;
-
-    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 (BIGNUM_LEN(num) != 0 && BDIGITS(num)[0] & 1) {
-	return Qtrue;
-    }
-    return Qfalse;
-}
+/* !!!warnig!!!!
+   this is not really a random number!!
+*/
 
 VALUE
-rb_big_even_p(VALUE num)
+big_rand(max)
+    VALUE max;
 {
-    if (BIGNUM_LEN(num) != 0 && BDIGITS(num)[0] & 1) {
-	return Qfalse;
-    }
-    return Qtrue;
-}
+    struct RBignum *v;
+    int len;
 
-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
+    len = RBIGNUM(max)->len;
+    v = RBIGNUM(bignew(len,1));
+    while (len--) {
+#ifdef HAVE_RANDOM
+	BDIGITS(v)[len] = random();
 #else
-# define rb_bdigit_dbl_isqrt(x) (BDIGIT)rb_ulong_isqrt(x)
+	BDIGITS(v)[len] = rand();
 #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 {
-	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;
+    return big_mod(v, max);
 }
 
-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
-    }
-    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;
-}
-
-#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
-int_pow_tmp3(VALUE x, VALUE y, VALUE m, int nega_flg)
+big_size(big)
+    VALUE big;
 {
-#ifdef USE_GMP
-    VALUE z;
-    size_t xn, yn, mn, zn;
-
-    if (FIXNUM_P(x)) {
-       x = rb_int2big(FIX2LONG(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
+    return INT2FIX(RBIGNUM(big)->len*sizeof(USHORT));
 }
 
-/*
- * Integer#pow
- */
-
 static VALUE
-int_pow_tmp1(VALUE x, VALUE y, long mm, int nega_flg)
-{
-    long xx = FIX2LONG(x);
-    long tmp = 1L;
-    long yy;
-
-    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
-int_pow_tmp2(VALUE x, VALUE y, long mm, int nega_flg)
-{
-    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);
-    }
-    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);
-}
-
-/*
- * Document-method: Integer#pow
- * call-seq:
- *    integer.pow(numeric)           ->  numeric
- *    integer.pow(integer, integer)  ->  integer
- *
- * Returns (modular) exponentiation as:
- *
- *   a.pow(b)     #=> same as a**b
- *   a.pow(b, m)  #=> same as (a**b) % m, but avoids huge temporary values
- */
-VALUE
-rb_int_powm(int const argc, VALUE * const argv, VALUE const num)
+big_zero_p(big)
+    VALUE big;
 {
-    rb_check_arity(argc, 1, 2);
-
-    if (argc == 1) {
-        return rb_int_pow(num, argv[0]);
-    }
-    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 <= 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();
-            return int_pow_tmp3(rb_int_modulo(a, m), b, m, nega_flg);
-        }
-    }
-    UNREACHABLE_RETURN(Qnil);
+    return FALSE;
 }
 
-/*
- *  Bignum objects hold integers outside the range of
- *  Fixnum. Bignum objects are created
- *  automatically when integer calculations would otherwise overflow a
- *  Fixnum. When a calculation involving
- *  Bignum objects returns a result that will fit in a
- *  Fixnum, the result is automatically converted.
- *
- *  For the purposes of the bitwise operations and <code>[]</code>, a
- *  Bignum is treated as if it were an infinite-length
- *  bitstring with 2's complement representation.
- *
- *  While Fixnum values are immediate, Bignum
- *  objects are not---assignment and parameter passing work with
- *  references to objects, not the objects themselves.
- *
- */
-
 void
-Init_Bignum(void)
-{
-    /* 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();
+Init_Bignum()
+{
+    cBignum = rb_define_class("Bignum", cInteger);
+
+    rb_undef_method(CLASS_OF(cBignum), "new");
+
+    rb_define_method(cBignum, "to_s", big_to_s, 0);
+    rb_define_method(cBignum, "coerce", big_coerce, 1);
+    rb_define_method(cBignum, "-@", big_uminus, 0);
+    rb_define_method(cBignum, "+", big_plus, 1);
+    rb_define_method(cBignum, "-", big_minus, 1);
+    rb_define_method(cBignum, "*", big_mul, 1);
+    rb_define_method(cBignum, "/", big_div, 1);
+    rb_define_method(cBignum, "%", big_mod, 1);
+    rb_define_method(cBignum, "divmod", big_divmod, 1);
+    rb_define_method(cBignum, "**", big_pow, 1);
+    rb_define_method(cBignum, "&", big_and, 1);
+    rb_define_method(cBignum, "|", big_or, 1);
+    rb_define_method(cBignum, "^", big_xor, 1);
+    rb_define_method(cBignum, "~", big_neg, 0);
+    rb_define_method(cBignum, "<<", big_lshift, 1);
+    rb_define_method(cBignum, ">>", big_rshift, 1);
+    rb_define_method(cBignum, "[]", big_aref, 1);
+
+    rb_define_method(cBignum, "<=>", big_cmp, 1);
+    rb_define_method(cBignum, "==", big_eq, 1);
+    rb_define_method(cBignum, "eql?", big_eq, 1);
+    rb_define_method(cBignum, "hash", big_hash, 0);
+    rb_define_method(cBignum, "to_i", big_to_i, 0);
+    rb_define_method(cBignum, "to_f", big_to_f, 0);
+    rb_define_method(cBignum, "abs", big_abs, 0);
+    rb_define_method(cBignum, "size", big_size, 0);
+    rb_define_method(cBignum, "zero?", big_zero_p, 0);
 }
diff --git a/bin/bundle b/bin/bundle
deleted file mode 100755
index 1a0b06b005..0000000000
--- a/bin/bundle
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/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
deleted file mode 100755
index e15eb39ed7..0000000000
--- a/bin/bundler
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/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
deleted file mode 100755
index 89d74fc525..0000000000
--- a/bin/erb
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env 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 '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('erb', 'erb', version)
-else
-gem "erb", version
-load Gem.bin_path("erb", "erb", version)
-end
diff --git a/bin/gem b/bin/gem
deleted file mode 100755
index a4ec754abb..0000000000
--- a/bin/gem
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/usr/bin/env ruby
-#--
-# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
-# All rights reserved.
-# See LICENSE.txt for permissions.
-#++
-
-require 'rubygems'
-require 'rubygems/gem_runner'
-require 'rubygems/exceptions'
-
-required_version = Gem::Requirement.new ">= 1.8.7"
-
-unless required_version.satisfied_by? Gem.ruby_version then
-  abort "Expected Ruby Version #{required_version}, is #{Gem.ruby_version}"
-end
-
-args = ARGV.clone
-
-begin
-  Gem::GemRunner.new.run args
-rescue Gem::SystemExitException => e
-  exit e.exit_code
-end
-
diff --git a/bin/irb b/bin/irb
deleted file mode 100755
index ae6d358c9d..0000000000
--- a/bin/irb
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env ruby
-#
-# 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 '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('irb', 'irb', version)
-else
-gem "irb", version
-load Gem.bin_path("irb", "irb", version)
-end
diff --git a/bin/racc b/bin/racc
deleted file mode 100755
index 3ddac532b4..0000000000
--- a/bin/racc
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/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/rdoc b/bin/rdoc
deleted file mode 100755
index 8fa948cddb..0000000000
--- a/bin/rdoc
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/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 '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('rdoc', 'rdoc', version)
-else
-gem "rdoc", version
-load Gem.bin_path("rdoc", "rdoc", version)
-end
diff --git a/bin/ri b/bin/ri
deleted file mode 100755
index 0cc2f73bb6..0000000000
--- a/bin/ri
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/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 '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('rdoc', 'ri', version)
-else
-gem "rdoc", version
-load Gem.bin_path("rdoc", "ri", version)
-end
diff --git a/bootstraptest/pending.rb b/bootstraptest/pending.rb
deleted file mode 100644
index 2c4b85a419..0000000000
--- a/bootstraptest/pending.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-assert_equal 'ok', %q{
-  def m
-    lambda{
-      proc{
-        return :ng1
-      }
-    }.call.call
-    :ng2
-  end
-
-  begin
-    m()
-  rescue LocalJumpError
-    :ok
-  end
-}
-
-# This randomly fails on mswin.
-assert_equal %q{[]}, %q{
-  Thread.new{sleep}.backtrace
-}
diff --git a/bootstraptest/runner.rb b/bootstraptest/runner.rb
deleted file mode 100755
index 94a90f5e95..0000000000
--- a/bootstraptest/runner.rb
+++ /dev/null
@@ -1,536 +0,0 @@
-"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'
-  require 'tmpdir'
-rescue LoadError
-  $:.unshift File.join(File.dirname(__FILE__), '../lib')
-  retry
-end
-
-if !Dir.respond_to?(:mktmpdir)
-  # copied from lib/tmpdir.rb
-  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
-      n += 1
-      retry
-    end
-
-    if block_given?
-      begin
-        yield path
-      ensure
-        FileUtils.remove_entry_secure path
-      end
-    else
-      path
-    end
-  end
-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
-  ARGV.delete_if {|arg|
-    case arg
-    when /\A--ruby=(.*)/
-      @ruby = $1
-      @ruby.gsub!(/^([^ ]*)/){File.expand_path($1)}
-      @ruby.gsub!(/(\s+-I\s*)((?!(?:\.\/)*-(?:\s|\z))\S+)/){$1+File.expand_path($2)}
-      @ruby.gsub!(/(\s+-r\s*)(\.\.?\/\S+)/){$1+File.expand_path($2)}
-      true
-    when /\A--sets=(.*)/
-      tests = Dir.glob("#{File.dirname($0)}/test_{#{$1}}*.rb").sort
-      puts tests.map {|path| File.basename(path) }.inspect
-      true
-    when /\A--dir=(.*)/
-      dir = $1
-      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
-    when /\A(-h|--h(elp)?)\z/
-      puts(<<-End)
-Usage: #{File.basename($0, '.*')} --ruby=PATH [--sets=NAME,NAME,...]
-        --sets=NAME,NAME,...        Name of test sets.
-        --dir=DIRECTORY             Working directory.
-                                    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
-  }
-  if tests and not ARGV.empty?
-    $stderr.puts "--tests and arguments are exclusive"
-    exit false
-  end
-  tests ||= ARGV
-  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
-    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
-  end
-
-  in_temporary_working_directory(dir) {
-    exec_test pathes
-  }
-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|
-    @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
-  if @error == 0
-    if @count == 0
-      $stderr.puts "No tests, no problem"
-    else
-      $stderr.puts "#{@passed}PASS#{@reset} all #{@count} tests"
-    end
-    exit true
-  else
-    $stderr.puts "#{@failed}FAIL#{@reset} #{@error}/#{@count} tests failed"
-    exit false
-  end
-end
-
-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
-    if @tty
-      $stderr.print "#{@progress_bs}#{@progress[@count % @progress.size]}"
-    elsif @verbose
-      $stderr.printf(". %.3f\n", t)
-    else
-      $stderr.print '.'
-    end
-  else
-    $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 = '', opt = '', **argh)
-  newtest
-  assert_check(testsrc, message, opt, **argh) {|result|
-    if expected == result
-      nil
-    else
-      desc = "#{result.inspect} (expected #{expected.inspect})"
-      pretty(testsrc, desc, result)
-    end
-  }
-end
-
-def assert_match(expected_pattern, testsrc, message = '')
-  newtest
-  assert_check(testsrc, message) {|result|
-    if expected_pattern =~ result
-      nil
-    else
-      desc = "#{expected_pattern.inspect} expected to be =~\n#{result.inspect}"
-      pretty(testsrc, desc, result)
-    end
-  }
-end
-
-def assert_not_match(unexpected_pattern, testsrc, message = '')
-  newtest
-  assert_check(testsrc, message) {|result|
-    if unexpected_pattern !~ result
-      nil
-    else
-      desc = "#{unexpected_pattern.inspect} expected to be !~\n#{result.inspect}"
-      pretty(testsrc, desc, result)
-    end
-  }
-end
-
-def assert_valid_syntax(testsrc, message = '')
-  newtest
-  assert_check(testsrc, message, '-c') {|result|
-    result if /Syntax OK/ !~ result
-  }
-end
-
-def assert_normal_exit(testsrc, *rest, timeout: nil, **opt)
-  newtest
-  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
-      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
-    faildesc
-  }
-end
-
-def assert_finish(timeout_seconds, testsrc, message = '')
-  if RubyVM.const_defined? :MJIT
-    timeout_seconds *= 3 if RubyVM::MJIT.enabled? # for --jit-wait
-  end
-  newtest
-  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
-    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
-  show_progress('') { message }
-end
-
-def pretty(src, desc, result)
-  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(/^/, '   ').sub(/\s*\z/, "\n")
-end
-
-def untabify(str)
-  str.gsub(/^\t+/) {' ' * (8 * $&.size) }
-end
-
-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 = '', **argh)
-  if @ruby
-    filename = make_srcfile(src, **argh)
-    begin
-      `#{@ruby} -W0 #{opt} #{filename}`
-    ensure
-      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
-  cleanup_coredump
-end
-
-def error(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
-
-def in_temporary_working_directory(dir)
-  if dir
-    Dir.mkdir dir
-    Dir.chdir(dir) {
-      yield
-    }
-  else
-    Dir.mktmpdir(["bootstraptest", ".tmpwd"]) {|d|
-      Dir.chdir(d) {
-        yield
-      }
-    }
-  end
-end
-
-def cleanup_coredump
-  FileUtils.rm_f 'core'
-  FileUtils.rm_f Dir.glob('core.*')
-  FileUtils.rm_f @ruby+'.stackdump' if @ruby
-end
-
-class CoreDumpError < StandardError; end
-
-def check_coredump
-  if File.file?('core') or not Dir.glob('core.*').empty? or
-      (@ruby and File.exist?(@ruby+'.stackdump'))
-    raise CoreDumpError, "core dumped"
-  end
-end
-
-main
diff --git a/bootstraptest/test_attr.rb b/bootstraptest/test_attr.rb
deleted file mode 100644
index 721a847145..0000000000
--- a/bootstraptest/test_attr.rb
+++ /dev/null
@@ -1,36 +0,0 @@
-assert_equal 'ok', %q{
-  module M
-    class A
-      class << self
-        attr_accessor :at
-        def workflow_rule
-          yield self
-        end
-
-        def eval_str(str)
-          eval(str)
-        end
-      end
-    end
-  end
-  begin
-    M::A.eval_str(<<-END)
-    workflow_rule do |r|
-      r.at 1
-    end
-    END
-  rescue ArgumentError => e
-    print "ok"
-  end
-}, '[ruby-core:14641]'
-
-assert_equal %{ok}, %{
-  class A
-    attr :m
-  end
-  begin
-    A.new.m(3)
-  rescue ArgumentError => e
-    print "ok"
-  end
-}, '[ruby-core:15120]'
diff --git a/bootstraptest/test_autoload.rb b/bootstraptest/test_autoload.rb
deleted file mode 100644
index a9f8e6dacd..0000000000
--- a/bootstraptest/test_autoload.rb
+++ /dev/null
@@ -1,70 +0,0 @@
-assert_equal 'ok', %q{
-  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 '' }
-  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"
-  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"
-  ZZZ.ok
-}
-
-assert_equal 'okok', %q{
-  open("zzz.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
-  autoload :ZZZ, "./zzz.rb"
-  t1 = Thread.new {ZZZ.ok}
-  t2 = Thread.new {ZZZ.ok}
-  [t1.value, t2.value].join
-}
-
-assert_finish 5, %q{
-  autoload :ZZZ, File.expand_path(__FILE__)
-  begin
-    ZZZ
-  rescue NameError
-  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
deleted file mode 100644
index cdc5960a59..0000000000
--- a/bootstraptest/test_block.rb
+++ /dev/null
@@ -1,613 +0,0 @@
-assert_equal %q{1}, %q{
-  1.times{
-    begin
-      a = 1
-    ensure
-      foo = nil
-    end
-  }
-}
-assert_equal %q{2}, %q{
-  [1,2,3].find{|x| x == 2}
-}
-assert_equal %q{2}, %q{
-  class E
-    include Enumerable
-    def each(&block)
-      [1, 2, 3].each(&block)
-    end
-  end
-  E.new.find {|x| x == 2 }
-}
-assert_equal %q{6}, %q{
-  sum = 0
-  for x in [1, 2, 3]
-    sum += x
-  end
-  sum
-}
-assert_equal %q{15}, %q{
-  sum = 0
-  for x in (1..5)
-    sum += x
-  end
-  sum
-}
-assert_equal %q{0}, %q{
-  sum = 0
-  for x in []
-    sum += x
-  end
-  sum
-}
-assert_equal %q{1}, %q{
-  ans = []
-  1.times{
-    for n in 1..3
-      a = n
-      ans << a
-    end
-  }
-}
-assert_equal %q{1..3}, %q{
-  ans = []
-  for m in 1..3
-    for n in 1..3
-      a = [m, n]
-      ans << a
-    end
-  end
-}
-assert_equal %q{[1, 2, 3]}, %q{
-  (1..3).to_a
-}
-assert_equal %q{[4, 8, 12]}, %q{
-  (1..3).map{|e|
-    e * 4
-  }
-}
-assert_equal %q{[1, 2, 3]}, %q{
-  class C
-    include Enumerable
-    def each
-      [1,2,3].each{|e|
-        yield e
-      }
-    end
-  end
-
-  C.new.to_a
-}
-assert_equal %q{[4, 5, 6]}, %q{
-  class C
-    include Enumerable
-    def each
-      [1,2,3].each{|e|
-        yield e
-      }
-    end
-  end
-
-  C.new.map{|e|
-    e + 3
-  }
-}
-assert_equal %q{100}, %q{
-  def m
-    yield
-  end
-  def n
-    yield
-  end
-
-  m{
-    n{
-      100
-    }
-  }
-}
-assert_equal %q{20}, %q{
-  def m
-    yield 1
-  end
-
-  m{|ib|
-    m{|jb|
-      i = 20
-    }
-  }
-}
-assert_equal %q{2}, %q{
-  def m
-    yield 1
-  end
-
-  m{|ib|
-    m{|jb|
-      ib = 20
-      kb = 2
-    }
-  }
-}
-assert_equal %q{3}, %q{
-  def iter1
-    iter2{
-      yield
-    }
-  end
-
-  def iter2
-    yield
-  end
-
-  iter1{
-    jb = 2
-    iter1{
-      jb = 3
-    }
-    jb
-  }
-}
-assert_equal %q{2}, %q{
-  def iter1
-    iter2{
-      yield
-    }
-  end
-
-  def iter2
-    yield
-  end
-
-  iter1{
-    jb = 2
-    iter1{
-      jb
-    }
-    jb
-  }
-}
-assert_equal %q{2}, %q{
-  def m
-    yield 1
-  end
-  m{|ib|
-    ib*2
-  }
-}
-assert_equal %q{92580}, %q{
-  def m
-    yield 12345, 67890
-  end
-  m{|ib,jb|
-    ib*2+jb
-  }
-}
-assert_equal %q{[10, nil]}, %q{
-  def iter
-    yield 10
-  end
-
-  a = nil
-  [iter{|a|
-    a
-  }, a]
-}
-assert_equal %q{21}, %q{
-  def iter
-    yield 10
-  end
-
-  iter{|a|
-    iter{|a|
-      a + 1
-    } + a
-  }
-}
-assert_equal %q{[10, 20, 30, 40, nil, nil, nil, nil]}, %q{
-  def iter
-    yield 10, 20, 30, 40
-  end
-
-  a = b = c = d = nil
-  iter{|a, b, c, d|
-    [a, b, c, d]
-  } + [a, b, c, d]
-}
-assert_equal %q{[10, 20, 30, 40, nil, nil]}, %q{
-  def iter
-    yield 10, 20, 30, 40
-  end
-
-  a = b = nil
-  iter{|a, b, c, d|
-    [a, b, c, d]
-  } + [a, b]
-}
-assert_equal %q{[1]}, %q{
-  $a = []
-
-  def iter
-    yield 1
-  end
-
-  def m
-    x = iter{|x|
-      $a << x
-      y = 0
-    }
-  end
-  m
-  $a
-}
-assert_equal %q{[1, [2]]}, %q{
-  def iter
-    yield 1, 2
-  end
-
-  iter{|a, *b|
-    [a, b]
-  }
-}
-assert_equal %q{[[1, 2]]}, %q{
-  def iter
-    yield 1, 2
-  end
-
-  iter{|*a|
-    [a]
-  }
-}
-assert_equal %q{[1, 2, []]}, %q{
-  def iter
-    yield 1, 2
-  end
-
-  iter{|a, b, *c|
-    [a, b, c]
-  }
-}
-assert_equal %q{[1, 2, nil, []]}, %q{
-  def iter
-    yield 1, 2
-  end
-
-  iter{|a, b, c, *d|
-    [a, b, c, d]
-  }
-}
-assert_equal %q{1}, %q{
-  def m
-    yield
-  end
-  m{
-    1
-  }
-}
-assert_equal %q{15129}, %q{
-  def m
-    yield 123
-  end
-  m{|ib|
-    m{|jb|
-      ib*jb
-    }
-  }
-}
-assert_equal %q{2}, %q{
-  def m a
-    yield a
-  end
-  m(1){|ib|
-    m(2){|jb|
-      ib*jb
-    }
-  }
-}
-assert_equal %q{9}, %q{
-  sum = 0
-  3.times{|ib|
-    2.times{|jb|
-      sum += ib + jb
-    }}
-  sum
-}
-assert_equal %q{10}, %q{
-  3.times{|bl|
-    break 10
-  }
-}
-assert_equal %q{[1, 2]}, %q{
-  def iter
-    yield 1,2,3
-  end
-
-  iter{|i, j|
-    [i, j]
-  }
-}
-assert_equal %q{[1, nil]}, %q{
-  def iter
-    yield 1
-  end
-
-  iter{|i, j|
-    [i, j]
-  }
-}
-
-assert_equal '0', %q{
-def m()
-end
-m {|(v0,*,(*)),|}
-m {|(*v0,(*)),|}
-m {|(v0,*v1,(*)),|}
-m {|((v0,*v1,v2)),|}
-m {|(v0,*v1,v2),|}
-m {|(v0,*v1,(v2)),|}
-m {|((*),*v0,v1),|}
-m {|((v0),*v1,v2),|}
-m {|(v0,v1,*v2,v3),|}
-m {|v0,(v1,*v2,v3),|}
-m {|(v0,*v1,v2),v3,|}
-m {|(v0,*v1,v2)|}
-m {|(v0,*v1,v2),&v3|}
-m {|(v0,*v1,v2),*|}
-m {|(v0,*v1,v2),*,&v3|}
-m {|*,(v0,*v1,v2)|}
-m {|*,(v0,*v1,v2),&v3|}
-m {|v0,*,(v1,*v2,v3)|}
-m {|v0,*,(v1,*v2,v3),&v4|}
-m {|(v0,*v1,v2),*,v3|}
-m {|(v0,*v1,v2),*,v3,&v4|}
-m {|(v0, *v1, v2)|}
-m {|(*,v)|}
-0
-}, "block parameter (shouldn't SEGV: [ruby-dev:31143])"
-
-assert_equal 'nil', %q{
-  def m
-    yield
-  end
-  m{|&b| b}.inspect
-}, '[ruby-dev:31147]'
-
-assert_equal 'nil', %q{
-  def m()
-    yield
-  end
-  m {|(v,(*))|}.inspect
-}, '[ruby-dev:31160]'
-
-assert_equal 'nil', %q{
-  def m()
-    yield
-  end
-  m {|(*,a,b)|}.inspect
-}, '[ruby-dev:31153]'
-
-assert_equal 'nil', %q{
-  def m()
-    yield
-  end
-  m {|((*))|}.inspect
-}
-
-assert_equal %q{[1, 1, [1, nil], [1, nil], [1, nil], [1, nil], [1, 1], 1, [1, nil], [1, nil], [1, nil], [1, nil], [[1, 1], [1, 1]], [1, 1], [1, 1], [1, 1], [1, nil], [1, nil], [[[1, 1], [1, 1]], [[1, 1], [1, 1]]], [[1, 1], [1, 1]], [[1, 1], [1, 1]], [[1, 1], [1, 1]], [1, 1], [1, 1], [[[[1, 1], [1, 1]], [[1, 1], [1, 1]]], [[[1, 1], [1, 1]], [[1, 1], [1, 1]]]], [[[1, 1], [1, 1]], [[1, 1], [1, 1]]], [[[1, 1], [1, 1]], [[1, 1], [1, 1]]], [[[1, 1], [1, 1]], [[1, 1], [1, 1]]], [[1, 1], [1, 1]], [[1, 1], [1, 1]]]}, %q{
-def m(ary = [])
-  yield(ary)
-end
-
-$ans = []
-o = 1
-5.times{
-  v,(*) = o; $ans << o
-  m(o){|(v,(*))| $ans << v}
-  ((x, y)) = o; $ans << [x, y]
-  m(o){|((x, y))| $ans << [x, y]}
-  (((x, y))) = o; $ans << [x, y]
-  m(o){|(((x, y)))| $ans << [x, y]}
-  o = [o, o]
-}; $ans
-}
-
-assert_equal '0', %q{
-  def m()
-    yield [0]
-  end
-  m {|*,v| v}.inspect
-}, '[ruby-dev:31437]'
-assert_equal '[0]', %q{
-  def m
-    yield [0]
-  end
-  m{|v, &b| v}.inspect
-}, '[ruby-dev:31440]'
-assert_equal 'ok', %q{
-  begin
-    lambda{|a|}.call(1, 2)
-  rescue ArgumentError
-    :ok
-  else
-    :ng
-  end
-}, '[ruby-dev:31464]'
-assert_equal 'ok', %q{
-  begin
-    lambda{|&b|}.call(3)
-  rescue ArgumentError
-    :ok
-  else
-    :ng
-  end
-}, '[ruby-dev:31472]'
-assert_equal 'ok', %q{
-  class C
-    def each
-      yield [1,2]
-      yield 1,2
-    end
-  end
-  vs1 = []
-  C.new.each {|*v| vs1 << v }
-  vs2 = []
-  C.new.to_enum.each {|*v| vs2 << v }
-  vs1 == vs2 ? :ok : :ng
-}, '[ruby-dev:32329]'
-
-assert_normal_exit %q{
-  e = [1,2,3].each
-  10000.times {
-    e = [e].each
-  }
-  Thread.new { GC.start }.join
-}, '[ruby-dev:32604]'
-
-
-assert_equal '[nil, []]', %q{
-  def m() yield nil,[] end
-  l = lambda {|*v| v}
-  GC.stress=true
-  r = m(&l)
-  GC.stress=false
-  r.inspect
-}, '[ruby-dev:32567]'
-
-assert_equal NilClass.to_s, %q{
-  r = false; 1.times{|&b| r = b}; r.class
-}
-
-assert_equal 'ok', %q{
-  class C
-    define_method(:foo) do |arg, &block|
-      if block then block.call else arg end
-    end
-  end
-  C.new.foo("ng") {"ok"}
-}, '[ruby-talk:266422]'
-
-assert_equal 'ok', %q{
-  class C
-    define_method(:xyz) do |o, k, &block|
-      block.call(o, k)
-    end
-  end
-  C.new.xyz("o","k") {|o, k| o+k}
-}, '[ruby-core:20544]'
-
-assert_equal 'ok', %q{
-  class C
-    define_method(:xyz) do |*args, &block|
-      block.call(*args)
-    end
-  end
-  C.new.xyz("o","k") {|*args| args.join("")}
-}, '[ruby-core:20544]'
-
-assert_equal 'ok', %q{
-  STDERR.reopen(STDOUT)
-  class C
-    define_method(:foo) do |&block|
-      block.call if block
-    end
-    result = "ng"
-    new.foo() {result = "ok"}
-    result
-  end
-}
-
-assert_equal "ok", %q{
-  class Bar
-    def bar; :ok; end
-  end
-  def foo
-    yield(Bar.new) if block_given?
-  end
-  foo(&:bar)
-}, '[ruby-core:14279]'
-
-assert_normal_exit %q{
-  class Controller
-    def respond_to(&block)
-      responder = Responder.new
-      block.call(responder)
-      responder.respond
-    end
-    def test_for_bug
-      respond_to{|format|
-        format.js{
-          puts "in test"
-          render{|obj|
-            puts obj
-          }
-        }
-      }
-    end
-    def render(&block)
-      puts "in render"
-    end
-  end
-
-  class Responder
-    def method_missing(symbol, &block)
-      puts "enter method_missing"
-      @response = Proc.new{
-        puts 'in method missing'
-        block.call
-      }
-      puts "leave method_missing"
-    end
-    def respond
-      @response.call
-    end
-  end
-  t = Controller.new
-  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
deleted file mode 100644
index b7fe0a1acd..0000000000
--- a/bootstraptest/test_class.rb
+++ /dev/null
@@ -1,169 +0,0 @@
-# class
-assert_equal 'true',    %q( class C; end
-                            Object.const_defined?(:C) )
-assert_equal 'Class',   %q( class C; end
-                            C.class )
-assert_equal 'C',       %q( class C; end
-                            C.name )
-assert_equal 'C',       %q( class C; end
-                            C.new.class )
-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
-                            class C < A; end
-                            Object.const_defined?(:C) )
-assert_equal 'Class',   %q( class A; end
-                            class C < A; end
-                            C.class )
-assert_equal 'C',       %q( class A; end
-                            class C < A; end
-                            C.name )
-assert_equal 'C',       %q( class A; end
-                            class C < A; end
-                            C.new.class )
-assert_equal 'C',       %q( class A; end
-                            class C < A; end
-                            C.new.class.name )
-assert_equal 'Class',   %q( class A; end
-                            class C < A; end
-                            C.new.class.class )
-
-# module
-assert_equal 'true',    %q( module M; end
-                            Object.const_defined?(:M) )
-assert_equal 'Module',  %q( module M; end
-                            M.class )
-assert_equal 'M',       %q( module M; end
-                            M.name )
-assert_equal 'C',       %q( module M; end
-                            class C; include M; end
-                            C.new.class )
-
-# nested class
-assert_equal 'A::B',    %q( class A; end
-                            class A::B; end
-                            A::B )
-assert_equal 'A::B',    %q( class A; end
-                            class A::B; end
-                            A::B.name )
-assert_equal 'A::B',    %q( class A; end
-                            class A::B; end
-                            A::B.new.class )
-assert_equal 'Class',   %q( class A; end
-                            class A::B; end
-                            A::B.new.class.class )
-assert_equal 'A::B::C', %q( class A; end
-                            class A::B; end
-                            class A::B::C; end
-                            A::B::C )
-assert_equal 'A::B::C', %q( class A; end
-                            class A::B; end
-                            class A::B::C; end
-                            A::B::C.name )
-assert_equal 'Class',   %q( class A; end
-                            class A::B; end
-                            class A::B::C; end
-                            A::B::C.class )
-assert_equal 'A::B::C', %q( class A; end
-                            class A::B; end
-                            class A::B::C; end
-                            A::B::C.new.class )
-assert_equal 'Class',   %q( class A; end
-                            class A::B; end
-                            class A::B::C; end
-                            A::B::C.new.class.class )
-assert_equal 'A::B2',   %q( class A; end
-                            class A::B; end
-                            class A::B2 < A::B; end
-                            A::B2 )
-assert_equal 'Class',   %q( class A; end
-                            class A::B; end
-                            class A::B2 < A::B; end
-                            A::B2.class )
-
-# reopen
-assert_equal 'true',    %q( class C; end;  c1 = ::C
-                            class C; end;  c2 = ::C
-                            c1.equal?(c2) )
-assert_equal '1',       %q( class C; end
-                            class A; end
-                            begin class C < A; end; rescue TypeError; 1 end )
-assert_equal '1',       %q( class C; end
-                            begin module C; end; rescue TypeError; 1 end )
-assert_equal '1',       %q( C = 1   # [yarv-dev:782]
-                            begin class C; end; rescue TypeError; 1 end )
-assert_equal '1',       %q( C = 1   # [yarv-dev:800]
-                            begin module C; end; rescue TypeError; 1 end )
-
-# colon2, colon3
-assert_equal '1',       %q( class A; end;  A::C = 1;  A::C )
-assert_equal '1',       %q( A = 7;  begin A::C = 7; rescue TypeError; 1 end )
-assert_equal '1',       %q( begin 7::C = 7; rescue TypeError; 1 end )
-assert_equal 'C',       %q( class A; class ::C; end end;  C )
-assert_equal 'Class',   %q( class A; class ::C; end end;  C.class )
-assert_equal 'OK',      %q( class A; ::C = "OK"; end;  C )
-assert_equal 'String',  %q( class A; ::C = "OK"; end;  C.class )
-
-# class/module dup
-assert_equal 'Class',   %q( class C; end;  C.dup.class )
-assert_equal 'Module',  %q( module M; end;  M.dup.class )
-
-
-assert_equal "ok", %q{
-  module Foo
-  end
-
-  begin
-    def foo(&b)
-      Foo.module_eval &b
-    end
-    foo{
-      def bar
-      end
-    }
-    bar()
-  rescue NameError
-    :ok
-  end
-}, '[ruby-core:14378]'
-
-assert_equal '3', %q{
-  $i = 0
-  class C
-    def self.const_missing *args
-      $i+=1
-    end
-  end
-
-  3.times{
-    C::FOO
-  }
-  $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
deleted file mode 100644
index 7d1b45b75e..0000000000
--- a/bootstraptest/test_env.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-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
deleted file mode 100644
index 5d2593c306..0000000000
--- a/bootstraptest/test_eval.rb
+++ /dev/null
@@ -1,329 +0,0 @@
-assert_equal %q{ok}, %q{
-  def m
-    a = :ok
-    $b = binding
-  end
-  m
-  eval('a', $b)
-}
-assert_equal %q{[:ok, :ok2]}, %q{
-  def m
-    a = :ok
-    $b = binding
-  end
-  m
-  eval('b = :ok2', $b)
-  eval('[a, b]', $b)
-}
-assert_equal %q{[nil, 1]}, %q{
-  $ans = []
-  def m
-    $b = binding
-  end
-  m
-  $ans << eval(%q{
-    $ans << eval(%q{
-      a
-    }, $b)
-    a = 1
-  }, $b)
-  $ans
-}
-assert_equal %q{C}, %q{
-  Const = :top
-  class C
-    Const = :C
-    def m
-      binding
-    end
-  end
-  eval('Const', C.new.m)
-}
-assert_equal %q{top}, %q{
-  Const = :top
-  a = 1
-  class C
-    Const = :C
-    def m
-      eval('Const', TOPLEVEL_BINDING)
-    end
-  end
-  C.new.m
-}
-assert_equal %q{:ok
-ok}, %q{
-  class C
-    $b = binding
-  end
-  eval %q{
-    def m
-      :ok
-    end
-  }, $b
-  p C.new.m
-}
-assert_equal %q{ok}, %q{
-  b = proc{
-    a = :ok
-    binding
-  }.call
-  a = :ng
-  eval("a", b)
-}
-assert_equal %q{C}, %q{
-  class C
-    def foo
-      binding
-    end
-  end
-  C.new.foo.eval("self.class.to_s")
-}
-assert_equal %q{1}, %q{
-  eval('1')
-}
-assert_equal %q{1}, %q{
-  eval('a=1; a')
-}
-assert_equal %q{1}, %q{
-  a = 1
-  eval('a')
-}
-assert_equal %q{ok}, %q{
-  __send__ :eval, %{
-    :ok
-  }
-}
-assert_equal %q{ok}, %q{
-  1.__send__ :instance_eval, %{
-    :ok
-  }
-}
-assert_equal %q{1}, %q{
-  1.instance_eval{
-    self
-  }
-}
-assert_equal %q{foo}, %q{
-  'foo'.instance_eval{
-    self
-  }
-}
-assert_equal %q{1}, %q{
-  class Integer
-    Const = 1
-  end
-  1.instance_eval %{
-    Const
-  }
-}
-assert_equal %q{top}, %q{
-  Const = :top
-  class C
-    Const = :C
-  end
-  C.module_eval{
-    Const
-  }
-}
-assert_equal %q{C}, %q{
-  Const = :top
-  class C
-    Const = :C
-  end
-  C.class_eval %{
-    def m
-      Const
-    end
-  }
-  C.new.m
-}
-assert_equal %q{top}, %q{
-  Const = :top
-  class C
-    Const = :C
-  end
-  C.class_eval{
-    def m
-      Const
-    end
-  }
-  C.new.m
-}
-assert_equal %q{[:top, :C, :top, :C]}, %q{
-  Const = :top
-  class C
-    Const = :C
-  end
-  $nest = false
-  $ans = []
-  def m
-    $ans << Const
-    C.module_eval %{
-      $ans << Const
-      Boo = false unless defined? Boo
-      unless $nest
-        $nest = true
-        m
-      end
-    }
-  end
-  m
-  $ans
-}
-assert_equal %q{[10, main]}, %q{
-  $nested = false
-  $ans = []
-  $pr = proc{
-    $ans << self
-    unless $nested
-      $nested = true
-      $pr.call
-    end
-  }
-  class C
-    def initialize &b
-      10.instance_eval(&b)
-    end
-  end
-  C.new(&$pr)
-  $ans
-}
-
-%w[break next redo].each do |keyword|
-  assert_match %r"Can't escape from eval with #{keyword}\b", %{
-    STDERR.reopen(STDOUT)
-    begin
-      eval "0 rescue #{keyword}"
-    rescue SyntaxError => e
-      e.message
-    end
-  }, '[ruby-dev:31372]'
-end
-
-assert_normal_exit %q{
-  STDERR.reopen(STDOUT)
-  class Foo
-     def self.add_method
-       class_eval("def some-bad-name; puts 'hello' unless @some_variable.some_function(''); end")
-     end
-  end
-  Foo.add_method
-}, '[ruby-core:14556] reported by Frederick Cheung'
-
-assert_equal 'ok', %q{
-  class Module
-    def my_module_eval(&block)
-      module_eval(&block)
-    end
-  end
-  class String
-    Integer.my_module_eval do
-      def hoge; end
-    end
-  end
-  if Integer.instance_methods(false).map{|m|m.to_sym}.include?(:hoge) &&
-     !String.instance_methods(false).map{|m|m.to_sym}.include?(:hoge)
-    :ok
-  else
-    :ng
-  end
-}, "[ruby-dev:34236]"
-
-assert_equal 'ok', %q{
-  begin
-    eval("class nil::Foo; end")
-    :ng
-  rescue Exception
-    :ok
-  end
-}
-
-assert_equal 'ok', %q{
-  begin
-    0.instance_eval { def m() :m end }
-    1.m
-    :ng
-  rescue Exception
-    :ok
-  end
-}, '[ruby-dev:34579]'
-
-assert_equal 'ok', %q{
-  begin
-    class A
-      12.instance_eval { @@a }
-    end
-  rescue NameError
-    :ok
-  end
-}, '[ruby-core:16794]'
-
-assert_equal 'ok', %q{
-  begin
-    class A
-      12.instance_exec { @@a }
-    end
-  rescue NameError
-    :ok
-  end
-}, '[ruby-core:16794]'
-
-assert_equal 'ok', %q{
-  nil.instance_eval {
-    def defd_using_instance_eval() :ok end
-  }
-  nil.defd_using_instance_eval
-}, '[ruby-core:28324]'
-
-assert_equal 'ok', %q{
-  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 "", %q{
-  b = binding
-  10.times{
-    eval('', b)
-  }
-  begin
-    eval('1.times{raise}', b)
-  rescue => e
-    e.message
-  end
-}, '[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
deleted file mode 100644
index 0fb6f552b8..0000000000
--- a/bootstraptest/test_exception.rb
+++ /dev/null
@@ -1,432 +0,0 @@
-assert_equal %q{2}, %q{
-  begin
-    1+1
-  ensure
-    2+2
-  end
-}
-assert_equal %q{4}, %q{
-  begin
-    1+1
-    begin
-      2+2
-    ensure
-      3+3
-    end
-  ensure
-    4+4
-  end
-}
-assert_equal %q{4}, %q{
-  begin
-    1+1
-    begin
-      2+2
-    ensure
-      3+3
-    end
-  ensure
-    4+4
-    begin
-      5+5
-    ensure
-      6+6
-    end
-  end
-}
-assert_equal %q{NilClass}, %q{
-  a = nil
-  1.times{|e|
-    begin
-    rescue => err
-    end
-    a = err.class
-  }
-  a
-}
-assert_equal %q{RuntimeError}, %q{
-  a = nil
-  1.times{|e|
-    begin
-      raise
-    rescue => err
-    end
-    a = err.class
-  }
-  a
-}
-assert_equal %q{}, %q{
-  $!
-}
-assert_equal %q{FOO}, %q{
-  begin
-    raise "FOO"
-  rescue
-    $!
-  end
-}
-assert_equal %q{FOO}, %q{
-  def m
-    $!
-  end
-  begin
-    raise "FOO"
-  rescue
-    m()
-  end
-}
-assert_equal %q{[#<RuntimeError: BAR>, #<RuntimeError: FOO>]}, %q{
-  $ans = []
-  def m
-    $!
-  end
-  begin
-    raise "FOO"
-  rescue
-    begin
-      raise "BAR"
-    rescue
-      $ans << m()
-    end
-    $ans << m()
-  end
-  $ans
-}
-assert_equal %q{[#<RuntimeError: FOO>, #<RuntimeError: FOO>]}, %q{
-  $ans = []
-  def m
-    $!
-  end
-
-  begin
-    begin
-      raise "FOO"
-    ensure
-      $ans << m()
-    end
-  rescue
-    $ans << m()
-  end
-}
-assert_equal %q{[nil]}, %q{
-  $ans = []
-  def m
-    $!
-  end
-  def m2
-    1.times{
-      begin
-        return
-      ensure
-        $ans << m
-      end
-    }
-  end
-  m2
-  $ans
-}
-assert_equal %q{ok}, %q{
-  begin
-    raise
-  rescue
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  begin
-    raise
-  rescue
-    :ok
-  ensure
-    :ng
-  end
-}
-assert_equal %q{RuntimeError}, %q{
-  begin
-    raise
-  rescue => e
-    e.class
-  end
-}
-assert_equal %q{ng}, %q{
-  begin
-    raise
-  rescue StandardError
-    :ng
-  rescue Exception
-    :ok
-  end
-}
-assert_equal %q{c}, %q{
-  begin
-    begin
-      raise "a"
-    rescue
-      raise "b"
-    ensure
-      raise "c"
-    end
-  rescue => e
-    e.message
-  end
-}
-assert_equal %q{33}, %q{
-  def m a, b
-    a + b
-  end
-  m(1, begin
-         raise
-       rescue
-         2
-       end) +
-  m(10, begin
-         raise
-       rescue
-         20
-       ensure
-         30
-       end)
-}
-assert_equal %q{3}, %q{
-  def m a, b
-    a + b
-  end
-  m(begin
-      raise
-    rescue
-      1
-    end,
-    begin
-      raise
-    rescue
-      2
-    end)
-}
-assert_equal %q{ok3}, %q{
-  class E1 < Exception
-  end
-
-  def m
-    yield
-  end
-
-  begin
-    begin
-      begin
-        m{
-          raise
-        }
-      rescue E1
-        :ok2
-      ensure
-      end
-    rescue
-      :ok3
-    ensure
-    end
-  rescue E1
-    :ok
-  ensure
-  end
-}
-assert_equal %q{7}, %q{
-  $i = 0
-  def m
-    iter{
-      begin
-        $i += 1
-        begin
-          $i += 2
-          break
-        ensure
-
-        end
-      ensure
-        $i += 4
-      end
-      $i = 0
-    }
-  end
-
-  def iter
-    yield
-  end
-  m
-  $i
-}
-assert_equal %q{10}, %q{
-  $i = 0
-  def m
-    begin
-      $i += 1
-      begin
-        $i += 2
-        return
-      ensure
-        $i += 3
-      end
-    ensure
-      $i += 4
-    end
-    p :end
-  end
-  m
-  $i
-}
-assert_equal %q{1}, %q{
-  begin
-    1
-  rescue
-    2
-  end
-}
-assert_equal %q{4}, %q{
-  begin
-    1
-    begin
-      2
-    rescue
-      3
-    end
-    4
-  rescue
-    5
-  end
-}
-assert_equal %q{3}, %q{
-  begin
-    1
-  rescue
-    2
-  else
-    3
-  end
-}
-assert_equal %q{2}, %q{
-  begin
-    1+1
-  rescue
-    2+2
-  ensure
-    3+3
-  end
-   }
-assert_equal %q{2}, %q{
-  begin
-    1+1
-  rescue
-    2+2
-  ensure
-    3+3
-  end
-   }
-assert_equal %q{6}, %q{
-  begin
-    1+1
-  rescue
-    2+2
-  else
-    3+3
-  ensure
-    4+4
-  end
-   }
-assert_equal %q{12}, %q{
- begin
-   1+1
-   begin
-     2+2
-   rescue
-     3+3
-   else
-     4+4
-   end
- rescue
-   5+5
- else
-   6+6
- ensure
-   7+7
- end
-   }
-assert_equal %q{ok}, %q{ #
-  proc{
-    begin
-      raise
-      break
-    rescue
-      :ok
-    end
-  }.call
-}
-assert_equal %q{}, %q{
-  proc do
-    begin
-      raise StandardError
-      redo
-    rescue StandardError
-    end
-  end.call
-}
-
-##
-assert_match /undefined method `foo\'/, %q{#`
-  STDERR.reopen(STDOUT)
-  class C
-    def inspect
-      bar {}
-    end
-
-    def bar
-      raise
-    ensure
-    end
-  end
-  C.new.foo
-}, "[ruby-dev:31407]"
-
-assert_equal 'nil', %q{
-  doit = false
-  exc = nil
-  t = Thread.new {
-    begin
-      doit = true
-      sleep 10
-    ensure
-      exc = $!
-    end
-  }
-  Thread.pass until doit
-  t.kill
-  t.join
-  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
deleted file mode 100644
index 35e1bf6851..0000000000
--- a/bootstraptest/test_fiber.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-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_finalizer.rb b/bootstraptest/test_finalizer.rb
deleted file mode 100644
index 22a16b1220..0000000000
--- a/bootstraptest/test_finalizer.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-assert_normal_exit %q{
-a1,a2,b1,b2=Array.new(4){""}
-ObjectSpace.define_finalizer(b2,proc{})
-ObjectSpace.define_finalizer(b1,proc{b1.inspect})
-
-ObjectSpace.define_finalizer(a2,proc{a1.inspect})
-ObjectSpace.define_finalizer(a1,proc{})
-}, '[ruby-dev:35778]'
diff --git a/bootstraptest/test_flip.rb b/bootstraptest/test_flip.rb
deleted file mode 100644
index ff194868b2..0000000000
--- a/bootstraptest/test_flip.rb
+++ /dev/null
@@ -1 +0,0 @@
-assert_equal %q{E}, %q{$_ = "E"; eval("nil if true..~/^E/",nil,"-e"); $_}
diff --git a/bootstraptest/test_flow.rb b/bootstraptest/test_flow.rb
deleted file mode 100644
index 35f19db588..0000000000
--- a/bootstraptest/test_flow.rb
+++ /dev/null
@@ -1,601 +0,0 @@
-assert_equal %q{[1, 2, 4, 5, 6, 7, 8]}, %q{$a = []; begin;  ; $a << 1
-  [1,2].each{; $a << 2
-    break; $a << 3
-  }; $a << 4
-  begin; $a << 5
-  ensure; $a << 6
-  end; $a << 7
-; $a << 8
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 5, 6, 7, 8]}, %q{$a = []; begin;  ; $a << 1
-  begin; $a << 2
-    [1,2].each do; $a << 3
-      break; $a << 4
-    end; $a << 5
-  ensure; $a << 6
-  end; $a << 7
-; $a << 8
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{ok}, %q{
-  ["a"].inject("ng"){|x,y|
-    break :ok
-  }
-}
-assert_equal %q{ok}, %q{
-  unless ''.respond_to? :lines
-    class String
-      def lines
-        self
-      end
-    end
-  end
-
-  ('a').lines.map{|e|
-    break :ok
-  }
-}
-assert_equal %q{[1, 2, 4, 5]}, %q{$a = []; begin; ; $a << 1
-  ["a"].inject("ng"){|x,y|; $a << 2
-    break :ok; $a << 3
-  }; $a << 4
-; $a << 5
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 4, 5]}, %q{$a = []; begin; ; $a << 1
-  ('a'..'b').map{|e|; $a << 2
-    break :ok; $a << 3
-  }; $a << 4
-; $a << 5
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 5, 7, 8]}, %q{$a = []; begin;  ; $a << 1
-  [1,2].each do; $a << 2
-    begin; $a << 3
-      break; $a << 4
-    ensure; $a << 5
-    end; $a << 6
-  end; $a << 7
-; $a << 8
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 6, 9, 10]}, %q{$a = []; begin; ; $a << 1
-  i=0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    begin; $a << 5
-    ensure; $a << 6
-      break; $a << 7
-    end; $a << 8
-  end; $a << 9
-; $a << 10
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 7, 10, 11]}, %q{$a = []; begin; ; $a << 1
-  i=0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    begin; $a << 5
-      raise; $a << 6
-    ensure; $a << 7
-      break; $a << 8
-    end; $a << 9
-  end; $a << 10
-; $a << 11
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 7, 10, 11]}, %q{$a = []; begin; ; $a << 1
-  i=0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    begin; $a << 5
-      raise; $a << 6
-    rescue; $a << 7
-      break; $a << 8
-    end; $a << 9
-  end; $a << 10
-; $a << 11
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 5, 8, 9]}, %q{$a = []; begin;  ; $a << 1
-  [1,2].each do; $a << 2
-    begin; $a << 3
-      raise StandardError; $a << 4
-    ensure; $a << 5
-      break; $a << 6
-    end; $a << 7
-  end; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 5, 8, 9]}, %q{$a = []; begin;  ; $a << 1
-  [1,2].each do; $a << 2
-    begin; $a << 3
-      raise StandardError; $a << 4
-    rescue; $a << 5
-      break; $a << 6
-    end; $a << 7
-  end; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 6, 8, 10, 11]}, %q{$a = []; begin;  ; $a << 1
-  [1,2].each do; $a << 2
-    begin; $a << 3
-      begin; $a << 4
-        break; $a << 5
-      ensure; $a << 6
-      end; $a << 7
-    ensure; $a << 8
-    end; $a << 9
-  end; $a << 10
-; $a << 11
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 6, 7, 8, 10, 13, 3, 4, 5, 6, 7, 8, 10, 13, 3, 4, 5, 6, 7, 8, 10, 13, 14, 15]}, %q{$a = []; begin; ; $a << 1
-  i = 0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    j = 0; $a << 5
-    while j<3; $a << 6
-      j+=1; $a << 7
-      begin; $a << 8
-        raise; $a << 9
-      rescue; $a << 10
-        break; $a << 11
-      end; $a << 12
-    end; $a << 13
-  end; $a << 14
-; $a << 15
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 15, 3, 4, 5, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 15, 3, 4, 5, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 15, 16, 17]}, %q{$a = []; begin; ; $a << 1
-  i = 0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    j = 0; $a << 5
-    while j<3; $a << 6
-      j+=1; $a << 7
-      1.times{; $a << 8
-        begin; $a << 9
-          raise; $a << 10
-        rescue; $a << 11
-          break; $a << 12
-        end; $a << 13
-      }; $a << 14
-    end; $a << 15
-  end; $a << 16
-; $a << 17
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 6, 7, 8, 10, 13, 3, 4, 5, 6, 7, 8, 10, 13, 3, 4, 5, 6, 7, 8, 10, 13, 14, 15]}, %q{$a = []; begin; ; $a << 1
-  i = 0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    j = 0; $a << 5
-    while j<3; $a << 6
-      j+=1; $a << 7
-      begin; $a << 8
-        raise; $a << 9
-      ensure; $a << 10
-        break; $a << 11
-      end; $a << 12
-    end; $a << 13
-  end; $a << 14
-; $a << 15
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 15, 3, 4, 5, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 15, 3, 4, 5, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 6, 7, 8, 9, 11, 14, 15, 16, 17]}, %q{$a = []; begin; ; $a << 1
-  i = 0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    j = 0; $a << 5
-    while j<3; $a << 6
-      j+=1; $a << 7
-      1.times{; $a << 8
-        begin; $a << 9
-          raise; $a << 10
-        ensure; $a << 11
-          break; $a << 12
-        end; $a << 13
-      }; $a << 14
-    end; $a << 15
-  end; $a << 16
-; $a << 17
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 5, 8, 9]}, %q{$a = []; begin; ; $a << 1
-  while true; $a << 2
-    begin; $a << 3
-      break; $a << 4
-    ensure; $a << 5
-      break; $a << 6
-    end; $a << 7
-  end; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 5, 99]}, %q{
-$a = [];
-begin; ; $a << 1
-  while true; $a << 2
-    begin; $a << 3
-      break; $a << 4
-    ensure; $a << 5
-      raise; $a << 6
-    end; $a << 7
-  end; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 6, 8, 9, 10, 11]}, %q{$a = []; begin;  ; $a << 1
-  begin; $a << 2
-    [1,2].each do; $a << 3
-      begin; $a << 4
-        break; $a << 5
-      ensure; $a << 6
-      end; $a << 7
-    end; $a << 8
-  ensure; $a << 9
-  end; $a << 10
-; $a << 11
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 4, 99]}, %q{$a = []; begin; ; $a << 1
-  begin; $a << 2
-    raise StandardError; $a << 3
-  ensure; $a << 4
-  end; $a << 5
-; $a << 6
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4]}, %q{$a = []; begin;  ; $a << 1
-  begin; $a << 2
-  ensure; $a << 3
-  end ; $a << 4
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 5, 99]}, %q{$a = []; begin;  ; $a << 1
-  [1,2].each do; $a << 2
-    begin; $a << 3
-      break; $a << 4
-    ensure; $a << 5
-      raise StandardError; $a << 6
-    end; $a << 7
-  end; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{3}, %q{
-  def m a, b
-    a + b
-  end
-  m(1,
-    while true
-      break 2
-    end
-    )
-}
-assert_equal %q{4}, %q{
-  def m a, b
-    a + b
-  end
-  m(1,
-    (i=0; while i<2
-       i+=1
-       class C
-         next 2
-       end
-     end; 3)
-    )
-}
-assert_equal %q{34}, %q{
-  def m a, b
-    a+b
-  end
-  m(1, 1.times{break 3}) +
-  m(10, (1.times{next 3}; 20))
-}
-assert_equal %q{[1, 2, 3, 6, 7]}, %q{$a = []; begin; ; $a << 1
-  3.times{; $a << 2
-    class C; $a << 3
-      break; $a << 4
-    end; $a << 5
-  }; $a << 6
-; $a << 7
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 8, 9]}, %q{$a = []; begin; ; $a << 1
-  3.times{; $a << 2
-    class A; $a << 3
-      class B; $a << 4
-        break; $a << 5
-      end; $a << 6
-    end; $a << 7
-  }; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 2, 3, 2, 3, 6, 7]}, %q{$a = []; begin; ; $a << 1
-  3.times{; $a << 2
-    class C; $a << 3
-      next; $a << 4
-    end; $a << 5
-  }; $a << 6
-; $a << 7
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 2, 3, 4, 2, 3, 4, 8, 9]}, %q{$a = []; begin; ; $a << 1
-  3.times{; $a << 2
-    class C; $a << 3
-      class D; $a << 4
-        next; $a << 5
-      end; $a << 6
-    end; $a << 7
-  }; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 6, 7]}, %q{$a = []; begin; ; $a << 1
-  while true; $a << 2
-    class C; $a << 3
-      break; $a << 4
-    end; $a << 5
-  end; $a << 6
-; $a << 7
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 8, 9]}, %q{$a = []; begin; ; $a << 1
-  while true; $a << 2
-    class C; $a << 3
-      class D; $a << 4
-        break; $a << 5
-      end; $a << 6
-    end; $a << 7
-  end; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 3, 4, 5, 3, 4, 5, 3, 4, 5, 8, 9]}, %q{$a = []; begin; ; $a << 1
-  i=0; $a << 2
-  while i<3; $a << 3
-    i+=1; $a << 4
-    class C; $a << 5
-      next 10; $a << 6
-    end; $a << 7
-  end; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{1}, %q{
-  1.times{
-    while true
-      class C
-        begin
-          break
-        ensure
-          break
-        end
-      end
-    end
-  }
-}
-assert_equal %q{[1, 2, 3, 5, 2, 3, 5, 7, 8]}, %q{$a = []; begin;  ; $a << 1
-  [1,2].each do; $a << 2
-    begin; $a << 3
-      next; $a << 4
-    ensure; $a << 5
-    end; $a << 6
-  end; $a << 7
-; $a << 8
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 2, 6, 3, 5, 7, 8]}, %q{$a = []; begin;  ; $a << 1
-  o = "test"; $a << 2
-  def o.test(a); $a << 3
-    return a; $a << 4
-  ensure; $a << 5
-  end; $a << 6
-  o.test(123); $a << 7
-; $a << 8
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 4, 7, 5, 8, 9]}, %q{$a = []; begin; ; $a << 1
-  def m1 *args; $a << 2
-    ; $a << 3
-  end; $a << 4
-  def m2; $a << 5
-    m1(:a, :b, (return 1; :c)); $a << 6
-  end; $a << 7
-  m2; $a << 8
-; $a << 9
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 8, 2, 3, 4, 5, 9, 10]}, %q{$a = []; begin; ; $a << 1
-  def m(); $a << 2
-    begin; $a << 3
-      2; $a << 4
-    ensure; $a << 5
-      return 3; $a << 6
-    end; $a << 7
-  end; $a << 8
-  m; $a << 9
-; $a << 10
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 3, 11, 4, 5, 6, 7, 12, 13]}, %q{$a = []; begin; ; $a << 1
-  def m2; $a << 2
-  end; $a << 3
-  def m(); $a << 4
-    m2(begin; $a << 5
-         2; $a << 6
-       ensure; $a << 7
-         return 3; $a << 8
-       end); $a << 9
-    4; $a << 10
-  end; $a << 11
-  m(); $a << 12
-; $a << 13
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[1, 16, 2, 3, 4, 5, 6, 7, 10, 11, 17, 18]}, %q{$a = []; begin; ; $a << 1
-  def m; $a << 2
-    1; $a << 3
-    1.times{; $a << 4
-      2; $a << 5
-      begin; $a << 6
-        3; $a << 7
-        return; $a << 8
-        4; $a << 9
-      ensure; $a << 10
-        5; $a << 11
-      end; $a << 12
-      6; $a << 13
-    }; $a << 14
-    7; $a << 15
-  end; $a << 16
-  m(); $a << 17
-; $a << 18
-; rescue Exception; $a << 99; end; $a}
-assert_equal %q{[:ok, :ok2, :last]}, %q{
-  a = []
-  i = 0
-  begin
-    while i < 1
-      i+=1
-      begin
-        begin
-          next
-        ensure
-          a << :ok
-        end
-      ensure
-        a << :ok2
-      end
-    end
-  ensure
-    a << :last
-  end
-  a
-}
-assert_equal %q{[:ok, :ok2, :last]}, %q{
-  a = []
-  i = 0
-  begin
-    while i < 1
-      i+=1
-      begin
-        begin
-          break
-        ensure
-          a << :ok
-        end
-      ensure
-        a << :ok2
-      end
-    end
-  ensure
-    a << :last
-  end
-  a
-}
-assert_equal %q{[:ok, :ok2, :last]}, %q{
-  a = []
-  i = 0
-  begin
-    while i < 1
-      if i>0
-        break
-      end
-      i+=1
-      begin
-        begin
-          redo
-        ensure
-          a << :ok
-        end
-      ensure
-        a << :ok2
-      end
-    end
-  ensure
-    a << :last
-  end
-  a
-}
-assert_equal %Q{ENSURE\n}, %q{
-  def test
-    while true
-      return
-    end
-  ensure
-    puts("ENSURE")
-  end
-  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
deleted file mode 100644
index 83923dad97..0000000000
--- a/bootstraptest/test_fork.rb
+++ /dev/null
@@ -1,77 +0,0 @@
-assert_equal '0', %q{
-  begin
-    GC.stress = true
-    pid = fork {}
-    Process.wait pid
-    $?.to_i
-  rescue NotImplementedError
-    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
deleted file mode 100644
index eb68c9845e..0000000000
--- a/bootstraptest/test_gc.rb
+++ /dev/null
@@ -1,34 +0,0 @@
-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
deleted file mode 100644
index 5ffd953328..0000000000
--- a/bootstraptest/test_insns.rb
+++ /dev/null
@@ -1,440 +0,0 @@
-# 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_succ',  %q{ x = Time.at(0); x.succ == Time.at(1) }, ],
-
-  [ '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
deleted file mode 100644
index 89c00d0b88..0000000000
--- a/bootstraptest/test_io.rb
+++ /dev/null
@@ -1,112 +0,0 @@
-assert_finish 5, %q{
-  r, w = IO.pipe
-  t1 = Thread.new { r.sysread(1) }
-  t2 = Thread.new { r.sysread(1) }
-  sleep 0.01 until t1.stop? and t2.stop?
-  w.write "a"
-  w.write "a"
-}, '[ruby-dev:31866]'
-
-assert_finish 10, %q{
-  begin
-    require "io/nonblock"
-    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 0.01
-    w << "ab"
-  }
-  r.gets("abab")
-}
-
-assert_equal 'ok', %q{
-  require 'tmpdir'
-  begin
-    tmpname = "#{Dir.tmpdir}/ruby-btest-#{$$}-#{rand(0x100000000).to_s(36)}"
-    rw = File.open(tmpname, File::RDWR|File::CREAT|File::EXCL)
-  rescue Errno::EEXIST
-    retry
-  end
-  save = STDIN.dup
-  STDIN.reopen(rw)
-  STDIN.reopen(save)
-  rw.close
-  File.unlink(tmpname)
-  :ok
-}
-
-assert_equal 'ok', %q{
-  require 'tmpdir'
-  begin
-    tmpname = "#{Dir.tmpdir}/ruby-btest-#{$$}-#{rand(0x100000000).to_s(36)}"
-    rw = File.open(tmpname, File::RDWR|File::CREAT|File::EXCL)
-  rescue Errno::EEXIST
-    retry
-  end
-  save = STDIN.dup
-  STDIN.reopen(rw)
-  STDIN.print "a"
-  STDIN.reopen(save)
-  rw.close
-  File.unlink(tmpname)
-  :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"
-}
-
-10.times do
-  assert_normal_exit %q{
-    at_exit { p :foo }
-
-    megacontent = "abc" * 12345678
-    #File.open("megasrc", "w") {|f| f << megacontent }
-
-    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; r2.close }
-    IO.copy_stream(r1, w2) rescue nil
-    w2.close
-    r1.close
-    t1.join
-    t2.join
-  }, 'megacontent-copy_stream', ["INT"], :timeout => 10 or break
-end
-
-assert_normal_exit %q{
-  r, w = IO.pipe
-  STDOUT.reopen(w)
-  STDOUT.reopen(__FILE__, "r")
-}, '[ruby-dev:38131]'
diff --git a/bootstraptest/test_jump.rb b/bootstraptest/test_jump.rb
deleted file mode 100644
index 18a2737ea3..0000000000
--- a/bootstraptest/test_jump.rb
+++ /dev/null
@@ -1,314 +0,0 @@
-assert_equal %q{ok}, %q{
-  def m
-    :ng1
-    mm{
-      yield
-    }
-    :ng2
-  end
-
-  def mm
-    :ng3
-    yield
-    :ng4
-  end
-
-  m{
-    break :ok
-  }
-}
-assert_equal %q{ok}, %q{
-  3.times{
-    break :ok
-  }
-}
-assert_equal %q{}, %q{
-  catch(:foo){
-    throw :foo
-  }
-}
-assert_equal %q{false}, %q{
-  catch(:foo){
-    throw :foo, false
-  }
-}
-assert_equal %q{}, %q{
-  catch(:foo){
-    throw :foo, nil
-  }
-}
-assert_equal %q{ok}, %q{
-  catch(:foo){
-    throw :foo, :ok
-  }
-}
-assert_equal %q{}, %q{
-  catch(:foo){
-    1.times{
-      throw :foo
-    }
-  }
-}
-assert_equal %q{ok}, %q{
-  catch(:foo){
-    1.times{
-      throw :foo, :ok
-    }
-  }
-}
-assert_equal %q{ok}, %q{
-  catch(:foo){
-    catch(:bar){
-      throw :foo, :ok
-    }
-    :ng
-  }
-}
-assert_equal %q{ok}, %q{
-  catch(:foo){
-    catch(:bar){
-      1.times{
-        throw :foo, :ok
-      }
-    }
-    :ng
-  }
-}
-assert_equal %q{2}, %q{
-  module Enumerable
-    def all_?
-      self.each{|e|
-        unless yield(e)
-          return false
-        end
-      }
-      true
-    end
-  end
-
-  xxx = 0
-  [1,2].each{|bi|
-    [3,4].each{|bj|
-      [true, nil, true].all_?{|be| be}
-      break
-    }
-    xxx += 1
-  }
-  xxx
-}
-assert_equal %q{ok}, %q{
-  def m
-    yield
-  end
-
-  m{
-    begin
-    ensure
-      break :ok
-    end
-  }
-}
-assert_equal %q{ok}, %q{
-  def m
-    yield
-    :ok
-  end
-  i=0
-  m{
-    if i>10
-      i*i
-    else
-      i+=1
-      next
-    end
-  }
-}
-assert_equal %q{ok}, %q{
-  def m
-    yield
-  end
-
-  m{
-    next :ok
-  }
-}
-assert_equal %q{131}, %q{
-  def m
-    yield + 10
-  end
-  i=0
-  m{
-    if i>10
-      i*i
-    else
-      i+=1
-      redo
-    end
-  }
-}
-assert_match %r{Invalid retry}, %q{
-STDERR.reopen(STDOUT)
-begin
-  eval %q{
-    1.times{
-      retry
-    }
-  }
-rescue SyntaxError => e
-  e.message
-end
-}
-assert_equal %q{3}, %q{
-  def m
-    return 3
-  end
-  m
-}
-assert_equal %q{ok}, %q{
-  def m
-    :ng1
-    mm{
-      return :ok
-    }
-    :ng2
-  end
-
-  def mm
-    :ng3
-    yield
-    :ng4
-  end
-  m
-}
-assert_equal %q{100}, %q{
-  $i = 0
-  def m
-    begin
-      iter{
-        return
-      }
-    ensure
-      $i = 100
-    end
-  end
-
-  def iter
-    yield
-  end
-  m
-  $i
-}
-assert_equal %q{ok}, %q{
-  def m
-    begin
-      raise
-    rescue
-      return :ok
-    end
-    :ng
-  end
-  m
-}
-assert_equal %q{1}, %q{
-  def m
-    begin
-      raise
-    rescue
-      return 1
-    end
-  end
-
-  m
-}
-assert_equal %q{1}, %q{
-  def m
-    begin
-      #
-    ensure
-      return 1
-    end
-  end
-
-  m
-}
-assert_equal 'ok', %q{
-  begin
-    catch {|t| throw t, :ok }
-  rescue ArgumentError
-    :ng
-  end
-}, '[ruby-dev:31609]'
-
-assert_equal "1", %q{
-  catch do |t|
-    begin
-      throw t, 1
-      2
-    ensure
-      3
-    end
-  end
-}, "[ruby-dev:31698]"
-
-assert_normal_exit %q{
-  f = 0
-  1.times do
-    begin
-      f += 1
-    ensure
-      redo unless f > 2
-    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
deleted file mode 100644
index 9b3c10d519..0000000000
--- a/bootstraptest/test_literal.rb
+++ /dev/null
@@ -1,247 +0,0 @@
-# empty program
-assert_equal '',                ''
-assert_equal '',                ' '
-assert_equal '',                "\n"
-
-# special const
-assert_equal 'true',            'true'
-assert_equal 'TrueClass',       'true.class'
-assert_equal 'false',           'false'
-assert_equal 'FalseClass',      'false.class'
-assert_equal '',                'nil'
-assert_equal 'nil',             'nil.inspect'
-assert_equal 'NilClass',        'nil.class'
-assert_equal 'sym',             ':sym'
-assert_equal ':sym',            ':sym.inspect'
-assert_equal 'Symbol',          ':sym.class'
-assert_equal '1234',            '1234'
-assert_equal 'Integer',         '1234.class'
-assert_equal '1234',            '1_2_3_4'
-assert_equal 'Integer',         '1_2_3_4.class'
-assert_equal '18',              '0x12'
-assert_equal 'Integer',         '0x12.class'
-assert_equal '15',              '0o17'
-assert_equal 'Integer',         '0o17.class'
-assert_equal '5',               '0b101'
-assert_equal 'Integer',         '0b101.class'
-assert_equal '123456789012345678901234567890', '123456789012345678901234567890'
-assert_equal 'Integer',         '123456789012345678901234567890.class'
-assert_equal '2.0',             '2.0'
-assert_equal 'Float',           '1.3.class'
-
-# self
-assert_equal 'main',            'self'
-assert_equal 'Object',          'self.class'
-
-# string literal
-assert_equal 'a',               '?a'
-assert_equal 'String',          '?a.class'
-assert_equal 'A',               '?A'
-assert_equal 'String',          '?A.class'
-assert_equal "\n",              '?\n'
-assert_equal 'String',          '?\n.class'
-assert_equal ' ',               '?\ '
-assert_equal 'String',          '?\ .class'
-assert_equal 'string',          "'string'"
-assert_equal 'string',          '"string"'
-assert_equal 'string',          '%(string)'
-assert_equal 'string',          '%q(string)'
-assert_equal 'string',          '%Q(string)'
-assert_equal 'string string',   '"string string"'
-assert_equal ' ',               '" "'
-assert_equal "\0",              '"\0"'
-assert_equal "\1",              '"\1"'
-assert_equal "3",               '"\x33"'
-assert_equal "\n",              '"\n"'
-
-# dynamic string literal
-assert_equal '2',               '"#{1 + 1}"'
-assert_equal '16',              '"#{2 ** 4}"'
-assert_equal 'string',          's = "string"; "#{s}"'
-
-# dynamic symbol literal
-assert_equal 'a3c',             ':"a#{1+2}c"'
-assert_equal ':a3c',            ':"a#{1+2}c".inspect'
-assert_equal 'Symbol',          ':"a#{1+2}c".class'
-
-# xstring
-assert_equal "foo\n",           %q(`echo foo`)
-assert_equal "foo\n",           %q(s = "foo"; `echo #{s}`)
-
-# regexp
-assert_equal '',                '//.source'
-assert_equal 'Regexp',          '//.class'
-assert_equal '0',               '// =~ "a"'
-assert_equal '0',               '// =~ ""'
-assert_equal 'a',               '/a/.source'
-assert_equal 'Regexp',          '/a/.class'
-assert_equal '0',               '/a/ =~ "a"'
-assert_equal '0',               '/test/ =~ "test"'
-assert_equal '',                '/test/ =~ "tes"'
-assert_equal '0',               're = /test/; re =~ "test"'
-assert_equal '0',               'str = "test"; /test/ =~ str'
-assert_equal '0',               're = /test/; str = "test"; re =~ str'
-
-# dynamic regexp
-assert_equal 'regexp',          %q(/re#{'ge'}xp/.source)
-assert_equal 'Regexp',          %q(/re#{'ge'}xp/.class)
-
-# array
-assert_equal 'Array',           '[].class'
-assert_equal '0',               '[].size'
-assert_equal '0',               '[].length'
-assert_equal '[]',              '[].inspect'
-assert_equal 'Array',           '[0].class'
-assert_equal '1',               '[3].size'
-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 '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'
-assert_equal '1',               'a = [1,2]; a[0]'
-assert_equal '2',               'a = [1,2]; a[1]'
-assert_equal 'Array',           'a = [1 + 2, 3 + 4, 5 + 6]; a.class'
-assert_equal '[3, 7, 11]',      'a = [1 + 2, 3 + 4, 5 + 6]; a.inspect'
-assert_equal '7',               'a = [1 + 2, 3 + 4, 5 + 6]; a[1]'
-assert_equal '1',               '([0][0] += 1)'
-assert_equal '1',               '([2][0] -= 1)'
-assert_equal 'Array',           'a = [obj = Object.new]; a.class'
-assert_equal '1',               'a = [obj = Object.new]; a.size'
-assert_equal 'true',            'a = [obj = Object.new]; a[0] == obj'
-assert_equal '5',               'a = [1,2,3]; a[1] = 5; a[1]'
-assert_equal 'bar',             '[*:foo];:bar'
-assert_equal '[1, 2]',          'def nil.to_a; [2]; end; [1, *nil]'
-assert_equal '[1, 2]',          'def nil.to_a; [1, 2]; end; [*nil]'
-assert_equal '[0, 1, {2=>3}]',  '[0, *[1], 2=>3]', "[ruby-dev:31592]"
-
-
-# hash
-assert_equal 'Hash',            '{}.class'
-assert_equal '{}',              '{}.inspect'
-assert_equal 'Hash',            '{1=>2}.class'
-assert_equal '{1=>2}',          '{1=>2}.inspect'
-assert_equal '2',               'h = {1 => 2}; h[1]'
-assert_equal '0',               'h = {1 => 2}; h.delete(1); h.size'
-assert_equal '',                'h = {1 => 2}; h.delete(1); h[1]'
-assert_equal '2',               'h = {"string" => "literal", "goto" => "hell"}; h.size'
-assert_equal 'literal', 'h = {"string"=>"literal", "goto"=>"hell"}; h["string"]'
-assert_equal 'hell', 'h = {"string"=>"literal", "goto"=>"hell"}; h["goto"]'
-
-# range
-assert_equal 'Range',           '(1..2).class'
-assert_equal '1..2',            '(1..2).inspect'
-assert_equal '1',               '(1..2).begin'
-assert_equal '2',               '(1..2).end'
-assert_equal 'false',           '(1..2).exclude_end?'
-assert_equal 'Range',           'r = 1..2; r.class'
-assert_equal '1..2',            'r = 1..2; r.inspect'
-assert_equal '1',               'r = 1..2; r.begin'
-assert_equal '2',               'r = 1..2; r.end'
-assert_equal 'false',           'r = 1..2; r.exclude_end?'
-assert_equal 'Range',           '(1...3).class'
-assert_equal '1...3',           '(1...3).inspect'
-assert_equal '1',               '(1...3).begin'
-assert_equal '3',               '(1...3).end'
-assert_equal 'true',            '(1...3).exclude_end?'
-assert_equal 'Range',           'r = (1...3); r.class'
-assert_equal '1...3',           'r = (1...3); r.inspect'
-assert_equal '1',               'r = (1...3); r.begin'
-assert_equal '3',               'r = (1...3); r.end'
-assert_equal 'true',            'r = (1...3); r.exclude_end?'
-assert_equal 'Range',           'r = (1+2 .. 3+4); r.class'
-assert_equal '3..7',            'r = (1+2 .. 3+4); r.inspect'
-assert_equal '3',               'r = (1+2 .. 3+4); r.begin'
-assert_equal '7',               'r = (1+2 .. 3+4); r.end'
-assert_equal 'false',           'r = (1+2 .. 3+4); r.exclude_end?'
-assert_equal 'Range',           'r = (1+2 ... 3+4); r.class'
-assert_equal '3...7',           'r = (1+2 ... 3+4); r.inspect'
-assert_equal '3',               'r = (1+2 ... 3+4); r.begin'
-assert_equal '7',               'r = (1+2 ... 3+4); r.end'
-assert_equal 'true',            'r = (1+2 ... 3+4); r.exclude_end?'
-assert_equal 'Range',           'r = ("a".."c"); r.class'
-assert_equal '"a".."c"',        'r = ("a".."c"); r.inspect'
-assert_equal 'a',               'r = ("a".."c"); r.begin'
-assert_equal 'c',               'r = ("a".."c"); r.end'
-
-assert_equal 'String',          '__FILE__.class'
-assert_equal 'Integer',         '__LINE__.class'
-
-###
-
-assert_equal 'ok', %q{
-  # this cause "called on terminated object".
-  ObjectSpace.each_object(Module) {|m| m.name.inspect }
-  :ok
-}
-
-assert_normal_exit %q{
-  begin
-    r = 0**-1
-    r + r
-  rescue
-  end
-}, '[ruby-dev:34524]'
-
-assert_normal_exit %q{
-  begin
-    r = Marshal.load("\x04\bU:\rRational[\ai\x06i\x05")
-    r + r
-  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
deleted file mode 100644
index c36fa7078f..0000000000
--- a/bootstraptest/test_literal_suffix.rb
+++ /dev/null
@@ -1,54 +0,0 @@
-# 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_load.rb b/bootstraptest/test_load.rb
deleted file mode 100644
index e63c93a8f4..0000000000
--- a/bootstraptest/test_load.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-assert_equal 'ok', %q{
-  open("require-lock-test.rb", "w") {|f|
-    f.puts "sleep 0.1"
-    f.puts "module M"
-    f.puts "end"
-  }
-  $:.unshift Dir.pwd
-  vs = (1..2).map {|i|
-    Thread.start {
-      require "require-lock-test"
-      M
-    }
-  }.map {|t| t.value }
-  vs[0] == M && vs[1] == M ? :ok : :ng
-}, '[ruby-dev:32048]'
-
-assert_equal 'ok', %q{
-  %w[a a/foo b].each {|d| Dir.mkdir(d)}
-  open("b/foo", "w") {|f| f.puts "$ok = :ok"}
-  $:.replace(%w[a b])
-  begin
-    load "foo"
-    $ok
-  rescue => e
-    e.message
-  end
-}, '[ruby-dev:38097]'
diff --git a/bootstraptest/test_marshal.rb b/bootstraptest/test_marshal.rb
deleted file mode 100644
index 7e34176169..0000000000
--- a/bootstraptest/test_marshal.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-
-assert_normal_exit %q{
-  Marshal.load(Marshal.dump({"k"=>"v"}), lambda {|v| v})
-}
-
diff --git a/bootstraptest/test_massign.rb b/bootstraptest/test_massign.rb
deleted file mode 100644
index 0f63dd424a..0000000000
--- a/bootstraptest/test_massign.rb
+++ /dev/null
@@ -1,183 +0,0 @@
-assert_equal '[[1], 2, 3]', '*v1, (a, b) = [1,[2, 3]]; [v1, a, b]'
-assert_equal '[[1], 2, 3]', '*v1,(*), (a, b) = [1,:x,[2, 3]]; [v1, a, b]'
-
-assert_equal '[]',          '*a = *nil; a'
-assert_equal '[nil]',       '*a = nil; a'
-assert_equal '2',           'a, a = 1, 2; a', "[ruby-dev:31522]"
-assert_equal '[1, 2]',      'a, b = 1, 2'
-assert_equal '[1, 2]', %q{
-  ans = []
-  trace_var(:$a){|v| ans << v}
-  trace_var(:$b){|v| ans << v}
-  $a, $b = 1, 2
-  ans
-}
-
-assert_equal 'ok', %q{
-  r = :ok
-  :ng.tap {|(r)|}
-  r
-}, '[ruby-dev:31507]'
-
-=begin
-# generated by this script:
-
-3.times{|i|
-  8.times{|e|
-    ary = (0...e).to_a
-    a,b,c,d,e,f = nil
-    vals = %w(a b c d e f)
-    vals[i] = '*' + vals[i]
-    program = "#{vals.join(", ")} = *ary"
-    eval(program)
-    ans = [a,b,c,d,e,f]
-    puts %Q{
-      assert_equal "#{ans.inspect}", %q{
-        ary = #{ary.inspect}
-        #{program}; [a, b, c, d, e, f]
-      }}
-  }
-}
-=end
-
-      assert_equal "[[], nil, nil, nil, nil, nil]", %q{
-        ary = []
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[[], 0, nil, nil, nil, nil]", %q{
-        ary = [0]
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[[], 0, 1, nil, nil, nil]", %q{
-        ary = [0, 1]
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[[], 0, 1, 2, nil, nil]", %q{
-        ary = [0, 1, 2]
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[[], 0, 1, 2, 3, nil]", %q{
-        ary = [0, 1, 2, 3]
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[[], 0, 1, 2, 3, 4]", %q{
-        ary = [0, 1, 2, 3, 4]
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[[0], 1, 2, 3, 4, 5]", %q{
-        ary = [0, 1, 2, 3, 4, 5]
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[[0, 1], 2, 3, 4, 5, 6]", %q{
-        ary = [0, 1, 2, 3, 4, 5, 6]
-        *a, b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[nil, [], nil, nil, nil, nil]", %q{
-        ary = []
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, [], nil, nil, nil, nil]", %q{
-        ary = [0]
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, [], 1, nil, nil, nil]", %q{
-        ary = [0, 1]
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, [], 1, 2, nil, nil]", %q{
-        ary = [0, 1, 2]
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, [], 1, 2, 3, nil]", %q{
-        ary = [0, 1, 2, 3]
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, [], 1, 2, 3, 4]", %q{
-        ary = [0, 1, 2, 3, 4]
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, [1], 2, 3, 4, 5]", %q{
-        ary = [0, 1, 2, 3, 4, 5]
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, [1, 2], 3, 4, 5, 6]", %q{
-        ary = [0, 1, 2, 3, 4, 5, 6]
-        a, *b, c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[nil, nil, [], nil, nil, nil]", %q{
-        ary = []
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, nil, [], nil, nil, nil]", %q{
-        ary = [0]
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, 1, [], nil, nil, nil]", %q{
-        ary = [0, 1]
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, 1, [], 2, nil, nil]", %q{
-        ary = [0, 1, 2]
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, 1, [], 2, 3, nil]", %q{
-        ary = [0, 1, 2, 3]
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, 1, [], 2, 3, 4]", %q{
-        ary = [0, 1, 2, 3, 4]
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, 1, [2], 3, 4, 5]", %q{
-        ary = [0, 1, 2, 3, 4, 5]
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-      assert_equal "[0, 1, [2, 3], 4, 5, 6]", %q{
-        ary = [0, 1, 2, 3, 4, 5, 6]
-        a, b, *c, d, e, f = *ary; [a, b, c, d, e, f]
-      }
-
-
-#
-assert_equal 'ok', %q{
-  a,s=[],"aaa"
-  300.times { a<<s; s=s.succ }
-  eval <<-END__
-  GC.stress=true
-  Fiber.new do
-    #{ a.join(",") },*zzz=1
-  end.resume
-  END__
-  :ok
-}, '[ruby-dev:32581]'
-
-assert_equal 'ok', %q{
-  while true
-    *, z = 1
-    break
-  end
-  :ok
-}, '[ruby-dev:32892]'
diff --git a/bootstraptest/test_method.rb b/bootstraptest/test_method.rb
deleted file mode 100644
index 3462aa9434..0000000000
--- a/bootstraptest/test_method.rb
+++ /dev/null
@@ -1,1192 +0,0 @@
-# regular argument
-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_match /\Awrong number of arguments \(.*\b1\b.* 0\)\z/, %q{
-  def m; end
-  begin
-    m(1)
-  rescue => e
-    e.message
-  end
-}
-
-assert_match /\Awrong number of arguments \(.*\b0\b.* 1\)\z/, %q{
-  def m a; end
-  begin
-    m
-  rescue => e
-    e.message
-  end
-}
-
-# default argument
-assert_equal '1',       'def m(x=1) x end; m()'
-assert_equal '1',       'def m(x=7) x end; m(1)'
-assert_equal '1',       'def m(a,x=1) x end; m(7)'
-assert_equal '1',       'def m(a,x=7) x end; m(7,1)'
-assert_equal '1',       'def m(a,b,x=1) x end; m(7,7)'
-assert_equal '1',       'def m(a,b,x=7) x end; m(7,7,1)'
-assert_equal '1',       'def m(a,x=1,y=1) x end; m(7)'
-assert_equal '1',       'def m(a,x=1,y=1) y end; m(7)'
-assert_equal '1',       'def m(a,x=7,y=1) x end; m(7,1)'
-assert_equal '1',       'def m(a,x=7,y=1) y end; m(7,1)'
-assert_equal '1',       'def m(a,x=7,y=7) x end; m(7,1,1)'
-assert_equal '1',       'def m(a,x=7,y=7) y end; m(7,1,1)'
-
-# rest argument
-assert_equal '[]',      'def m(*a) a end; m().inspect'
-assert_equal '[1]',     'def m(*a) a end; m(1).inspect'
-assert_equal '[1, 2]',  'def m(*a) a end; m(1,2).inspect'
-assert_equal '[]',      'def m(x,*a) a end; m(7).inspect'
-assert_equal '[1]',     'def m(x,*a) a end; m(7,1).inspect'
-assert_equal '[1, 2]',  'def m(x,*a) a end; m(7,1,2).inspect'
-assert_equal '[]',      'def m(x,y,*a) a end; m(7,7).inspect'
-assert_equal '[1]',     'def m(x,y,*a) a end; m(7,7,1).inspect'
-assert_equal '[1, 2]',  'def m(x,y,*a) a end; m(7,7,1,2).inspect'
-assert_equal '[]',      'def m(x,y=7,*a) a end; m(7).inspect'
-assert_equal '[]',      'def m(x,y,z=7,*a) a end; m(7,7).inspect'
-assert_equal '[]',      'def m(x,y,z=7,*a) a end; m(7,7,7).inspect'
-assert_equal '[]',      'def m(x,y,z=7,zz=7,*a) a end; m(7,7,7).inspect'
-assert_equal '[]',      'def m(x,y,z=7,zz=7,*a) a end; m(7,7,7,7).inspect'
-assert_equal '1',       'def m(x,y,z=7,zz=1,*a) zz end; m(7,7,7).inspect'
-assert_equal '1',       'def m(x,y,z=7,zz=1,*a) zz end; m(7,7,7).inspect'
-assert_equal '1',       'def m(x,y,z=7,zz=7,*a) zz end; m(7,7,7,1).inspect'
-
-# block argument
-assert_equal 'Proc',    'def m(&block) block end; m{}.class'
-assert_equal 'nil',     'def m(&block) block end; m().inspect'
-assert_equal 'Proc',    'def m(a,&block) block end; m(7){}.class'
-assert_equal 'nil',     'def m(a,&block) block end; m(7).inspect'
-assert_equal '1',       'def m(a,&block) a end; m(1){}'
-assert_equal 'Proc',    'def m(a,b=nil,&block) block end; m(7){}.class'
-assert_equal 'nil',     'def m(a,b=nil,&block) block end; m(7).inspect'
-assert_equal 'Proc',    'def m(a,b=nil,&block) block end; m(7,7){}.class'
-assert_equal '1',       'def m(a,b=nil,&block) b end; m(7,1){}'
-assert_equal 'Proc',    'def m(a,b=nil,*c,&block) block end; m(7){}.class'
-assert_equal 'nil',     'def m(a,b=nil,*c,&block) block end; m(7).inspect'
-assert_equal '1',       'def m(a,b=nil,*c,&block) a end; m(1).inspect'
-assert_equal '1',       'def m(a,b=1,*c,&block) b end; m(7).inspect'
-assert_equal '1',       'def m(a,b=7,*c,&block) b end; m(7,1).inspect'
-assert_equal '[1]',     'def m(a,b=7,*c,&block) c end; m(7,7,1).inspect'
-
-# splat
-assert_equal '1',       'def m(a) a end; m(*[1])'
-assert_equal '1',       'def m(x,a) a end; m(7,*[1])'
-assert_equal '1',       'def m(x,y,a) a end; m(7,7,*[1])'
-assert_equal '1',       'def m(a,b) a end; m(*[1,7])'
-assert_equal '1',       'def m(a,b) b end; m(*[7,1])'
-assert_equal '1',       'def m(x,a,b) b end; m(7,*[7,1])'
-assert_equal '1',       'def m(x,y,a,b) b end; m(7,7,*[7,1])'
-assert_equal '1',       'def m(a,b,c) a end; m(*[1,7,7])'
-assert_equal '1',       'def m(a,b,c) b end; m(*[7,1,7])'
-assert_equal '1',       'def m(a,b,c) c end; m(*[7,7,1])'
-assert_equal '1',       'def m(x,a,b,c) a end; m(7,*[1,7,7])'
-assert_equal '1',       'def m(x,y,a,b,c) a end; m(7,7,*[1,7,7])'
-
-# hash argument
-assert_equal '1',       'def m(h) h end; m(7=>1)[7]'
-assert_equal '1',       'def m(h) h end; m(7=>1).size'
-assert_equal '1',       'def m(h) h end; m(7=>1, 8=>7)[7]'
-assert_equal '2',       'def m(h) h end; m(7=>1, 8=>7).size'
-assert_equal '1',       'def m(h) h end; m(7=>1, 8=>7, 9=>7)[7]'
-assert_equal '3',       'def m(h) h end; m(7=>1, 8=>7, 9=>7).size'
-assert_equal '1',       'def m(x,h) h end; m(7, 7=>1)[7]'
-assert_equal '1',       'def m(x,h) h end; m(7, 7=>1, 8=>7)[7]'
-assert_equal '1',       'def m(x,h) h end; m(7, 7=>1, 8=>7, 9=>7)[7]'
-assert_equal '1',       'def m(x,y,h) h end; m(7,7, 7=>1)[7]'
-assert_equal '1',       'def m(x,y,h) h end; m(7,7, 7=>1, 8=>7)[7]'
-assert_equal '1',       'def m(x,y,h) h end; m(7,7, 7=>1, 8=>7, 9=>7)[7]'
-
-# block argument
-assert_equal '1',       %q(def m(&block) mm(&block) end
-                           def mm() yield 1 end
-                           m {|a| a })
-assert_equal '1',       %q(def m(x,&block) mm(x,&block) end
-                           def mm(x) yield 1 end
-                           m(7) {|a| a })
-assert_equal '1',       %q(def m(x,y,&block) mm(x,y,&block) end
-                           def mm(x,y) yield 1 end
-                           m(7,7) {|a| a })
-
-# recursive call
-assert_equal '1',       %q(def m(n) n == 0 ? 1 : m(n-1) end; m(5))
-
-# instance method
-assert_equal '1',       %q(class C; def m() 1 end end;  C.new.m)
-assert_equal '1',       %q(class C; def m(a) a end end;  C.new.m(1))
-assert_equal '1',       %q(class C; def m(a = 1) a end end;  C.new.m)
-assert_equal '[1]',     %q(class C; def m(*a) a end end;  C.new.m(1).inspect)
-assert_equal '1',       %q( class C
-                              def m() mm() end
-                              def mm() 1 end
-                            end
-                            C.new.m )
-
-# singleton method (const)
-assert_equal '1',       %q(class C; def C.m() 1 end end;  C.m)
-assert_equal '1',       %q(class C; def C.m(a) a end end;  C.m(1))
-assert_equal '1',       %q(class C; def C.m(a = 1) a end end;  C.m)
-assert_equal '[1]',     %q(class C; def C.m(*a) a end end;  C.m(1).inspect)
-assert_equal '1',       %q(class C; end; def C.m() 1 end;  C.m)
-assert_equal '1',       %q(class C; end; def C.m(a) a end;  C.m(1))
-assert_equal '1',       %q(class C; end; def C.m(a = 1) a end;  C.m)
-assert_equal '[1]',     %q(class C; end; def C.m(*a) a end;  C.m(1).inspect)
-assert_equal '1',       %q(class C; def m() 7 end end; def C.m() 1 end;  C.m)
-assert_equal '1',       %q( class C
-                              def C.m() mm() end
-                              def C.mm() 1 end
-                            end
-                            C.m )
-
-# singleton method (lvar)
-assert_equal '1',       %q(obj = Object.new; def obj.m() 1 end;  obj.m)
-assert_equal '1',       %q(obj = Object.new; def obj.m(a) a end;  obj.m(1))
-assert_equal '1',       %q(obj = Object.new; def obj.m(a=1) a end;  obj.m)
-assert_equal '[1]',     %q(obj = Object.new; def obj.m(*a) a end;  obj.m(1))
-assert_equal '1',       %q(class C; def m() 7 end; end
-                           obj = C.new
-                           def obj.m() 1 end
-                           obj.m)
-
-# inheritance
-assert_equal '1',       %q(class A; def m(a) a end end
-                           class B < A; end
-                           B.new.m(1))
-assert_equal '1',       %q(class A; end
-                           class B < A; def m(a) a end end
-                           B.new.m(1))
-assert_equal '1',       %q(class A; def m(a) a end end
-                           class B < A; end
-                           class C < B; end
-                           C.new.m(1))
-
-# include
-assert_equal '1',       %q(class A; def m(a) a end end
-                           module M; end
-                           class B < A; include M; end
-                           B.new.m(1))
-assert_equal '1',       %q(class A; end
-                           module M; def m(a) a end end
-                           class B < A; include M; end
-                           B.new.m(1))
-
-# alias
-assert_equal '1',       %q( def a() 1 end
-                            alias m a
-                            m() )
-assert_equal '1',       %q( class C
-                              def a() 1 end
-                              alias m a
-                            end
-                            C.new.m )
-assert_equal '1',       %q( class C
-                              def a() 1 end
-                              alias :m a
-                            end
-                            C.new.m )
-assert_equal '1',       %q( class C
-                              def a() 1 end
-                              alias m :a
-                            end
-                            C.new.m )
-assert_equal '1',       %q( class C
-                              def a() 1 end
-                              alias :m :a
-                            end
-                            C.new.m )
-assert_equal '1',       %q( class C
-                              def a() 1 end
-                              alias m a
-                              undef a
-                            end
-                            C.new.m )
-
-# undef
-assert_equal '1',       %q( class C
-                              def m() end
-                              undef m
-                            end
-                            begin C.new.m; rescue NoMethodError; 1 end )
-assert_equal '1',       %q( class A
-                              def m() end
-                            end
-                            class C < A
-                              def m() end
-                              undef m
-                            end
-                            begin C.new.m; rescue NoMethodError; 1 end )
-assert_equal '1',       %q( class A; def a() end end   # [yarv-dev:999]
-                            class B < A
-                              def b() end
-                              undef a, b
-                            end
-                            begin B.new.a; rescue NoMethodError; 1 end )
-assert_equal '1',       %q( class A; def a() end end   # [yarv-dev:999]
-                            class B < A
-                              def b() end
-                              undef a, b
-                            end
-                            begin B.new.b; rescue NoMethodError; 1 end )
-
-assert_equal '3',  %q{
-  def m1
-    1
-  end
-  alias m2 m1
-  alias :"#{'m3'}" m1
-  m1 + m2 + m3
-}, '[ruby-dev:32308]'
-assert_equal '1', %q{
-  def foobar
-  end
-  undef :"foo#{:bar}"
-  1
-}, '[ruby-dev:32308]'
-assert_equal '1', %q{
-  def foobar
-    1
-  end
-  alias :"bar#{:baz}" :"foo#{:bar}"
-  barbaz
-}, '[ruby-dev:32308]'
-
-# private
-assert_equal '1',       %q( class C
-                              def m() mm() end
-                              def mm() 1 end
-                              private :mm
-                            end
-                            C.new.m )
-assert_equal '1',       %q( class C
-                              def m() 7 end
-                              private :m
-                            end
-                            begin C.m; rescue NoMethodError; 1 end )
-assert_equal '1',       %q( class C
-                              def C.m() mm() end
-                              def C.mm() 1 end
-                              private_class_method :mm
-                            end
-                            C.m )
-assert_equal '1',       %q( class C
-                              def C.m() 7 end
-                              private_class_method :m
-                            end
-                            begin C.m; rescue NoMethodError; 1 end )
-assert_equal '1',       %q( class C; def m() 1 end end
-                            C.new.m   # cache
-                            class C
-                              alias mm m; private :mm
-                            end
-                            C.new.m
-                            begin C.new.mm; 7; rescue NoMethodError; 1 end )
-
-# nested method
-assert_equal '1',       %q( class C
-                              def m
-                                def mm() 1 end
-                              end
-                            end
-                            C.new.m
-                            C.new.mm )
-assert_equal '1',       %q( class C
-                              def m
-                                def mm() 1 end
-                              end
-                            end
-                            instance_eval "C.new.m; C.new.mm" )
-
-# method_missing
-assert_equal ':m',      %q( class C
-                              def method_missing(mid, *args) mid end
-                            end
-                            C.new.m.inspect )
-assert_equal ':mm',     %q( class C
-                              def method_missing(mid, *args) mid end
-                            end
-                            C.new.mm.inspect )
-assert_equal '[1, 2]',  %q( class C
-                              def method_missing(mid, *args) args end
-                            end
-                            C.new.m(1,2).inspect )
-assert_equal '1',       %q( class C
-                              def method_missing(mid, *args) yield 1 end
-                            end
-                            C.new.m {|a| a })
-assert_equal 'nil',     %q( class C
-                              def method_missing(mid, *args, &block) block end
-                            end
-                            C.new.m.inspect )
-
-# send
-assert_equal '1',       %q( class C; def m() 1 end end;
-                            C.new.__send__(:m) )
-assert_equal '1',       %q( class C; def m() 1 end end;
-                            C.new.send(:m) )
-assert_equal '1',       %q( class C; def m(a) a end end;
-                            C.new.send(:m,1) )
-assert_equal '1',       %q( class C; def m(a,b) a end end;
-                            C.new.send(:m,1,7) )
-assert_equal '1',       %q( class C; def m(x,a=1) a end end;
-                            C.new.send(:m,7) )
-assert_equal '1',       %q( class C; def m(x,a=7) a end end;
-                            C.new.send(:m,7,1) )
-assert_equal '[1, 2]',  %q( class C; def m(*a) a end end;
-                            C.new.send(:m,1,2).inspect )
-assert_equal '1',       %q( class C; def m() 7 end; private :m end
-                            begin C.new.public_send(:m); rescue NoMethodError; 1 end )
-assert_equal '1',       %q( class C; def m() 1 end; private :m end
-                            C.new.send(:m) )
-
-# with block
-assert_equal '[[:ok1, :foo], [:ok2, :foo, :bar]]',
-%q{
-  class C
-    def [](a)
-      $ary << [yield, a]
-    end
-    def []=(a, b)
-      $ary << [yield, a, b]
-    end
-  end
-
-  $ary = []
-  C.new[:foo, &lambda{:ok1}]
-  C.new[:foo, &lambda{:ok2}] = :bar
-  $ary
-}
-
-# with
-assert_equal '[:ok1, [:ok2, 11]]', %q{
-  class C
-    def []
-      $ary << :ok1
-      10
-    end
-    def []=(a)
-      $ary << [:ok2, a]
-    end
-  end
-  $ary = []
-  C.new[]+=1
-  $ary
-}
-
-# splat and block arguments
-assert_equal %q{[[[:x, :y, :z], NilClass], [[1, :x, :y, :z], NilClass], [[1, 2, :x, :y, :z], NilClass], [[:obj], NilClass], [[1, :obj], NilClass], [[1, 2, :obj], NilClass], [[], Proc], [[1], Proc], [[1, 2], Proc], [[], Proc], [[1], Proc], [[1, 2], Proc], [[:x, :y, :z], Proc], [[1, :x, :y, :z], Proc], [[1, 2, :x, :y, :z], Proc]]}, %q{
-def m(*args, &b)
-  $result << [args, b.class]
-end
-$result = []
-ary = [:x, :y, :z]
-obj = :obj
-b = Proc.new{}
-
-m(*ary)
-m(1,*ary)
-m(1,2,*ary)
-m(*obj)
-m(1,*obj)
-m(1,2,*obj)
-m(){}
-m(1){}
-m(1,2){}
-m(&b)
-m(1,&b)
-m(1,2,&b)
-m(*ary,&b)
-m(1,*ary,&b)
-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)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4)}
-
-assert_equal %q{[1, 2, 3, :o2, [], 4, 5, NilClass, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5)}
-
-assert_equal %q{[1, 2, 3, 4, [], 5, 6, NilClass, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6)}
-
-assert_equal %q{[1, 2, 3, 4, [5], 6, 7, NilClass, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7)}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6], 7, 8, NilClass, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8)}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6, 7], 8, 9, NilClass, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8, 9)}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6, 7, 8], 9, 10, NilClass, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6, 7, 8, 9], 10, 11, NilClass, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11)}
-
-assert_equal %q{[1, 2, :o1, :o2, [], 3, 4, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4){}}
-
-assert_equal %q{[1, 2, 3, :o2, [], 4, 5, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5){}}
-
-assert_equal %q{[1, 2, 3, 4, [], 5, 6, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6){}}
-
-assert_equal %q{[1, 2, 3, 4, [5], 6, 7, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7){}}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6], 7, 8, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8){}}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6, 7], 8, 9, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8, 9){}}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6, 7, 8], 9, 10, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8, 9, 10){}}
-
-assert_equal %q{[1, 2, 3, 4, [5, 6, 7, 8, 9], 10, 11, Proc, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2, &b)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, b.class, x, y]
-end
-; m(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11){}}
-
-assert_equal %q{[1, 2, :o1, :o2, [], 3, 4, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, x, y]
-end
-; m(1, 2, 3, 4)}
-
-assert_equal %q{[1, 2, 3, :o2, [], 4, 5, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, x, y]
-end
-; m(1, 2, 3, 4, 5)}
-
-assert_equal %q{[1, 2, 3, 4, [], 5, 6, nil, nil]}, %q{
-def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2)
-  x, y = :x, :y if $foo
-  [m1, m2, o1, o2, r, p1, p2, x, y]
-end
-; m(1, 2, 3, 4, 5, 6)}
-
-
-#
-# super
-#
-=begin
-# below programs are generated by this program:
-
-BASE = <<EOS__
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; <TEST>; super; end; end
-EOS__
-
-tests = {
-%q{
-  def m
-} => %q{
-  C1.new.m
-},
-#
-%q{
-  def m a
-} => %q{
-  C1.new.m 1
-},
-%q{
-  def m a
-    a = :a
-} => %q{
-  C1.new.m 1
-},
-#
-%q{
-  def m a, o=:o
-} => %q{
-  C1.new.m 1
-  C1.new.m 1, 2
-},
-%q{
-  def m a, o=:o
-    a = :a
-} => %q{
-  C1.new.m 1
-  C1.new.m 1, 2
-},
-%q{
-  def m a, o=:o
-    o = :x
-} => %q{
-  C1.new.m 1
-  C1.new.m 1, 2
-},
-#
-%q{
-  def m a, *r
-} => %q{
-  C1.new.m 1
-  C1.new.m 1, 2
-  C1.new.m 1, 2, 3
-},
-%q{
-  def m a, *r
-    r = [:x, :y]
-} => %q{
-  C1.new.m 1
-  C1.new.m 1, 2
-  C1.new.m 1, 2, 3
-},
-#
-%q{
-  def m a, o=:o, *r
-} => %q{
-  C1.new.m 1
-  C1.new.m 1, 2
-  C1.new.m 1, 2, 3
-  C1.new.m 1, 2, 3, 4
-},
-#
-%q{
-  def m a, o=:o, *r, &b
-} => %q{
-  C1.new.m 1
-  C1.new.m 1, 2
-  C1.new.m 1, 2, 3
-  C1.new.m 1, 2, 3, 4
-  C1.new.m(1){}
-  C1.new.m(1, 2){}
-  C1.new.m(1, 2, 3){}
-  C1.new.m(1, 2, 3, 4){}
-},
-#
-"def m(m1, m2, o1=:o1, o2=:o2, p1, p2)" =>
-%q{
-C1.new.m(1,2,3,4)
-C1.new.m(1,2,3,4,5)
-C1.new.m(1,2,3,4,5,6)
-},
-#
-"def m(m1, m2, *r, p1, p2)" =>
-%q{
-C1.new.m(1,2,3,4)
-C1.new.m(1,2,3,4,5)
-C1.new.m(1,2,3,4,5,6)
-C1.new.m(1,2,3,4,5,6,7)
-C1.new.m(1,2,3,4,5,6,7,8)
-},
-#
-"def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2)" =>
-%q{
-C1.new.m(1,2,3,4)
-C1.new.m(1,2,3,4,5)
-C1.new.m(1,2,3,4,5,6)
-C1.new.m(1,2,3,4,5,6,7)
-C1.new.m(1,2,3,4,5,6,7,8)
-C1.new.m(1,2,3,4,5,6,7,8,9)
-},
-
-###
-}
-
-
-tests.each{|setup, methods| setup = setup.dup; setup.strip!
-  setup = BASE.gsub(/<TEST>/){setup}
-  methods.split(/\n/).each{|m| m = m.dup; m.strip!
-    next if m.empty?
-    expr = "#{setup}; #{m}"
-    result = eval(expr)
-    puts "assert_equal %q{#{result.inspect}}, %q{\n#{expr}}"
-    puts
-  }
-}
-
-=end
-
-assert_equal %q{[:C0_m, [1, 2, :o1, :o2, 3, 4]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, p1, p2); super; end; end
-; C1.new.m(1,2,3,4)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, :o2, 4, 5]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6)}
-
-assert_equal %q{[:C0_m, [1, :o]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [1, 2]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r; super; end; end
-; C1.new.m 1, 2}
-
-assert_equal %q{[:C0_m, [1, 2, 3]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r; super; end; end
-; C1.new.m 1, 2, 3}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r; super; end; end
-; C1.new.m 1, 2, 3, 4}
-
-assert_equal %q{[:C0_m, [:a]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a
-    a = :a; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6, 7]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6,7)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6, 7, 8]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6,7,8)}
-
-assert_equal %q{[:C0_m, [1, :o]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [1, 2]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m 1, 2}
-
-assert_equal %q{[:C0_m, [1, 2, 3]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m 1, 2, 3}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m 1, 2, 3, 4}
-
-assert_equal %q{[:C0_m, [1, :o]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m(1){}}
-
-assert_equal %q{[:C0_m, [1, 2]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m(1, 2){}}
-
-assert_equal %q{[:C0_m, [1, 2, 3]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m(1, 2, 3){}}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o, *r, &b; super; end; end
-; C1.new.m(1, 2, 3, 4){}}
-
-assert_equal %q{[:C0_m, [1, :x]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o
-    o = :x; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [1, :x]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o
-    o = :x; super; end; end
-; C1.new.m 1, 2}
-
-assert_equal %q{[:C0_m, [:a, :o]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o
-    a = :a; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [:a, 2]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, o=:o
-    a = :a; super; end; end
-; C1.new.m 1, 2}
-
-assert_equal %q{[:C0_m, [1]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [1, :x, :y]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, *r
-    r = [:x, :y]; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [1, :x, :y]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, *r
-    r = [:x, :y]; super; end; end
-; C1.new.m 1, 2}
-
-assert_equal %q{[:C0_m, [1, :x, :y]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, *r
-    r = [:x, :y]; super; end; end
-; C1.new.m 1, 2, 3}
-
-assert_equal %q{[:C0_m, [1, 2, :o1, :o2, 3, 4]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, :o2, 4, 5]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6, 7]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6,7)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6, 7, 8]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6,7,8)}
-
-assert_equal %q{[:C0_m, [1, 2, 3, 4, 5, 6, 7, 8, 9]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m(m1, m2, o1=:o1, o2=:o2, *r, p1, p2); super; end; end
-; C1.new.m(1,2,3,4,5,6,7,8,9)}
-
-assert_equal %q{[:C0_m, [1]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, *r; super; end; end
-; C1.new.m 1}
-
-assert_equal %q{[:C0_m, [1, 2]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, *r; super; end; end
-; C1.new.m 1, 2}
-
-assert_equal %q{[:C0_m, [1, 2, 3]]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m a, *r; super; end; end
-; C1.new.m 1, 2, 3}
-
-assert_equal %q{[:C0_m, []]}, %q{
-class C0; def m *args; [:C0_m, args]; end; end
-class C1 < C0; def m; super; end; end
-; C1.new.m}
-
-assert_equal %q{[:C0_m, [1, :o]]}, %q{
-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}
-
-assert_equal %q{[:C0_m, [1, 2]]}, %q{
-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 'ok', %q{
-  class C
-    def x=(n)
-    end
-    def m
-      self.x = :ok
-    end
-  end
-  C.new.m
-}
-
-assert_equal 'ok', %q{
-  proc{
-    $SAFE = 1
-    class C
-      def m
-        :ok
-      end
-    end
-  }.call
-  C.new.m
-}, '[ruby-core:11998]'
-
-assert_equal 'ok', %q{
-  class B
-    def m() :fail end
-  end
-  class C < B
-    undef m
-    begin
-      remove_method :m
-    rescue NameError
-    end
-  end
-  begin
-    C.new.m
-  rescue NameError
-    :ok
-  end
-}, '[ruby-dev:31816], [ruby-dev:31817]'
-
-assert_normal_exit %q{
-  begin
-    Process.setrlimit(Process::RLIMIT_STACK, 4_206_592)
-    # FreeBSD SEGVs this less than 4M + 12K bytes.
-  rescue Exception
-    exit
-  end
-  class C
-    attr "a" * (10*1024*1024)
-  end
-}, '[ruby-dev:31818]'
-
-assert_equal 'ok', %q{
-  class Module
-    def define_method2(name, &block)
-      define_method(name, &block)
-    end
-  end
-  class C
-    define_method2(:m) {|x, y| :fail }
-  end
-  begin
-    C.new.m([1,2])
-  rescue ArgumentError
-    :ok
-  end
-}
-
-assert_not_match /method_missing/, %q{
-  STDERR.reopen(STDOUT)
-  variable_or_mehtod_not_exist
-}
-
-assert_equal '[false, false, false, false, true, true]', %q{
-  class C
-    define_method(:foo) {
-      block_given?
-    }
-  end
-
-  C.new.foo {}
-
-  class D
-    def foo
-      D.module_eval{
-        define_method(:m1){
-          block_given?
-        }
-      }
-    end
-    def bar
-      D.module_eval{
-        define_method(:m2){
-          block_given?
-        }
-      }
-    end
-  end
-
-  D.new.foo
-  D.new.bar{}
-  [C.new.foo, C.new.foo{}, D.new.m1, D.new.m1{}, D.new.m2, D.new.m2{}]
-}, '[ruby-core:14813]'
-
-assert_equal 'ok', %q{
-  class Foo
-    define_method(:foo) do |&b|
-      b.call
-    end
-  end
-  Foo.new.foo do
-    break :ok
-  end
-}, '[ruby-dev:36028]'
-
-assert_equal '[1, 2, [3, 4]]', %q{
-  def regular(a, b, *c)
-    [a, b, c]
-  end
-  regular(*[], 1, *[], *[2, 3], *[], 4)
-}, '[ruby-core:19413]'
-
-assert_equal '[1, [:foo, 3, 4, :foo]]', %q{
-  def regular(a, *b)
-    [a, b]
-  end
-  a = b = [:foo]
-  regular(1, *a, *[3, 4], *b)
-}
-
-assert_equal '["B", "A"]', %q{
-  class A
-    def m
-      'A'
-    end
-  end
-
-  class B < A
-    define_method(:m) do
-      ['B', super()]
-    end
-  end
-
-  class C < B
-  end
-
-  C.new.m
-}
-
-assert_equal 'ok', %q{
-  module Foo
-    def foo
-      begin
-        super
-      rescue NoMethodError
-        :ok
-      end
-    end
-    module_function :foo
-  end
-  Foo.foo
-}, '[ruby-dev:37587]'
-
-assert_equal 'Object#foo', %q{
-  class Object
-    def self.foo
-      "Object.foo"
-    end
-    def foo
-      "Object#foo"
-    end
-  end
-
-  module Foo
-    def foo
-      begin
-        super
-      rescue NoMethodError
-        :ok
-      end
-    end
-    module_function :foo
-  end
-  Foo.foo
-}, '[ruby-dev:37587]'
-
-assert_normal_exit %q{
-  class BasicObject
-    remove_method :method_missing
-  end
-  begin
-    "a".lalala!
-  rescue NoMethodError => e
-    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
deleted file mode 100644
index 63a8d99322..0000000000
--- a/bootstraptest/test_objectspace.rb
+++ /dev/null
@@ -1,55 +0,0 @@
-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-100)..(minobj.object_id+100))+
-   ((maxobj.object_id-100)..(maxobj.object_id+100))).each {|id|
-    begin
-      o = ObjectSpace._id2ref(id)
-    rescue RangeError
-      next
-    end
-    o.inspect if defined?(o.inspect)
-  }
-}, '[ruby-dev:31911]'
-
-assert_normal_exit %q{
-  ary = (1..10).to_a
-  ary.permutation(2) {|x|
-    if x == [1,2]
-      ObjectSpace.each_object(String) {|s|
-        s.clear if !s.frozen? && (s.length == 40 || s.length == 80)
-      }
-    end
-  }
-}, '[ruby-dev:31982]'
-
-assert_normal_exit %q{
-  ary = (1..100).to_a
-  ary.permutation(2) {|x|
-    if x == [1,2]
-      ObjectSpace.each_object(Array) {|o| o.clear if o == ary && o.object_id != ary.object_id }
-    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
deleted file mode 100644
index 637603243d..0000000000
--- a/bootstraptest/test_proc.rb
+++ /dev/null
@@ -1,470 +0,0 @@
-assert_equal %q{[1, 2, 3]}, %q{
-  def getproc &b
-    b
-  end
-
-  def m
-    yield
-  end
-
-  m{
-    i = 1
-    m{
-      j = 2
-      m{
-        k = 3
-        getproc{
-          [i, j, k]
-        }
-      }
-    }
-  }.call
-}
-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
-}
-assert_equal %q{ok}, %q{
-  class C
-    def foo
-      :ok
-    end
-  end
-
-  def block
-    C.method(:new).to_proc
-  end
-  b = block()
-  b.call.foo
-}
-assert_equal %q{[0, 1, :last, 0, 2, :last]}, %q{
-  def proc &b
-    b
-  end
-
-  pr = []
-  proc{|i_b|
-    p3 = proc{|j_b|
-      pr << proc{|k_b|
-        [i_b, j_b, k_b]
-      }
-    }
-    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{
-      bvar2 = 4
-      bvar * bvar2
-    }
-  }.call
-}
-assert_equal %q{200}, %q{
-  def iter
-    yield
-  end
-
-  def getproc &b
-    b
-  end
-
-  loc1 = 0
-  pr1 = iter{
-    bl1 = 1
-    getproc{
-      loc1 += 1
-      bl1  += 1
-      loc1 + bl1
-    }
-  }
-
-  pr2 = iter{
-    bl1 = 1
-    getproc{
-      loc1 += 1
-      bl1  += 1
-      loc1 + bl1
-    }
-  }
-
-  pr1.call; pr2.call
-  pr1.call; pr2.call
-  pr1.call; pr2.call
-  (pr1.call + pr2.call) * loc1
-}
-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,
-            1,2,3,4,5,6,7,8,9,0,
-            1,2,3,4,5,6,7,8,9,0,
-            1,2,3,4,5,6,7,8,9,0,]
-  pr.call
-}
-assert_equal %q{1}, %q{
-  def proc(&pr)
-    pr
-  end
-
-  def m
-    a = 1
-    m2{
-      a
-    }
-  end
-
-  def m2
-    b = 2
-    proc{
-      [yield, b]
-    }
-    100000.times{|x|
-      "#{x}"
-    }
-    yield
-  end
-  m
-}
-assert_equal %q{[:C, :C]}, %q{
-  Const = :top
-  class C
-    Const = :C
-    $pr = proc{
-      (1..2).map{
-        Const
-      }
-    }
-  end
-  $pr.call
-}
-assert_equal %q{top}, %q{
-  Const = :top
-  class C
-    Const = :C
-  end
-  pr = proc{
-    Const
-  }
-  C.class_eval %q{
-    pr.call
-  }
-}
-assert_equal %q{1}, %q{
-  def m(&b)
-    b
-  end
-
-  m{|e_proctest| e_proctest}.call(1)
-}
-assert_equal %q{12}, %q{
-  def m(&b)
-    b
-  end
-
-  m{|e_proctest1, e_proctest2|
-    a = e_proctest1 * e_proctest2 * 2
-    a * 3
-  }.call(1, 2)
-}
-assert_equal %q{[[], [1], [1, 2], [1, 2, 3]]}, %q{
-  [
-  Proc.new{|*args| args}.call(),
-  Proc.new{|*args| args}.call(1),
-  Proc.new{|*args| args}.call(1, 2),
-  Proc.new{|*args| args}.call(1, 2, 3),
-  ]
-}
-assert_equal %q{[[nil, []], [1, []], [1, [2]], [1, [2, 3]]]}, %q{
-  [
-  Proc.new{|a, *b| [a, b]}.call(),
-  Proc.new{|a, *b| [a, b]}.call(1),
-  Proc.new{|a, *b| [a, b]}.call(1, 2),
-  Proc.new{|a, *b| [a, b]}.call(1, 2, 3),
-  ]
-}
-assert_equal %q{1}, %q{
-  def m(&b)
-    b
-  end
-  m{1}.call
-}
-assert_equal %q{3}, %q{
-  def m(&b)
-    b
-  end
-
-  m{
-    a = 1
-    a + 2
-  }.call
-}
-assert_equal %Q{ok\n}, %q{
-  class A; def get_block; proc {puts "ok"} end end
-  block = A.new.get_block
-  GC.start
-  block.call
-}, '[ruby-core:14885]'
-
-assert_equal 'ok', %q{
-  a = lambda {|x, y, &b| b }
-  b = a.curry[1]
-  if b.call(2){} == nil
-    :ng
-  else
-    :ok
-  end
-}, '[ruby-core:15551]'
-
-assert_equal 'ok', %q{
-  lambda {
-    break :ok
-    :ng
-  }.call
-}, '[ruby-dev:34646]'
-
-assert_equal %q{[:bar, :foo]}, %q{
-  def foo
-    klass = Class.new do
-      define_method(:bar) do
-        return :bar
-      end
-    end
-    [klass.new.bar, :foo]
-  end
-  foo
-}, "[ ruby-Bugs-19304 ]"
-
-assert_equal 'ok', %q{
-   $x = :ok
-   def def7(x, y)
-      x[y]
-      $x = :ng
-   end
-   def test_def7
-      def7(lambda {|x| x.call}, Proc.new {return})
-      $x = :ng
-   end
-   test_def7
-   $x
-}, '[ruby-core:17164]'
-
-assert_equal 'ok', %q{
-  lambda { a = lambda { return }; $x = :ng; a[]; $x = :ok }.call
-  $x
-}, '[ruby-core:17164]'
-
-assert_equal 'ok', %q{
-  lambda { a = lambda { break }; $x = :ng; a[]; $x = :ok }.call
-  $x
-}, '[ruby-core:17164]'
-
-assert_equal 'ok', %q{
-  def def8
-    $x = :ng
-    lambda { a = Proc.new { return }; a[]}.call
-    $x = :ok
-  end
-  def8
-  $x
-}, '[ruby-core:17164]'
-
-
-assert_equal 'ok', %q{
-   def def9
-      lambda {|a| $x = :ok; a[]; $x = :ng }.call(Proc.new { return })
-      $x = :ng
-   end
-   def9
-   $x
-}, '[ruby-core:17164]'
-
-assert_equal 'ok', %q{
-   def def10
-     $x = :ng
-     lambda { 1.times { return } }.call
-     $x = :ok
-   end
-   $x = :ok
-   def10
-   $x
-}, '[ruby-core:17164]'
-
-assert_equal 'ok', %q{
-   def def11
-      yield
-   end
-   begin
-      lambda { def11 { return } }.call
-   rescue LocalJumpError
-      :ng
-   else
-      :ok
-   end
-}, '[ruby-core:17164]'
-
-assert_equal 'ok', %q{
-   def def12
-      b = Proc.new { $x = :ng; lambda { return }.call; $x = :ok }.call
-   end
-   def12
-   $x
-}, '[ruby-core:17164]'
-
-assert_equal 'ok', %q{
-  def m
-    pr = proc{
-      proc{
-        return :ok
-      }
-    }.call
-    pr.call
-    :ng
-  end
-  m()
-}
-
-assert_equal 'ok', %q{
-  class Foo
-    def call_it(&block)
-      p = Proc.new(&block)
-      p.call
-    end
-  end
-
-  def give_it
-    proc { :ok }
-  end
-
-  f = Foo.new
-  a_proc = give_it
-  f.call_it(&give_it())
-}, '[ruby-core:15711]'
-
-assert_equal 'foo!', %q{
-  class FooProc < Proc
-    def initialize
-      @foo = "foo!"
-    end
-
-    def bar
-      @foo
-    end
-  end
-
-  def bar
-    FooProc.new &lambda{
-      p 1
-    }
-  end
-
-  fp = bar(&lambda{
-    p 2
-  })
-
-  fp.bar
-}, '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
-          $proc.call
-        end
-      end
-    end.call
-    :ng
-  rescue LocalJumpError
-    :ok
-  end
-}
-
-assert_equal 'ok', %q{
-  def x
-    binding
-  end
-  b = x{|a| a }
-  b.eval('yield("ok")')
-}, '[Bug #5634]'
-
-assert_equal 'ok', %q{
-  def x
-    binding
-  end
-  eval("x { 'ok' }").eval "yield"
-}, '[Bug #5634]'
-
-assert_equal 'ok', %q{
-  def x
-    binding
-  end
-  def m
-    x{ 'ok' }
-  end
-  eval('yield', m)
-}, '[Bug #5634]'
-
diff --git a/bootstraptest/test_ractor.rb b/bootstraptest/test_ractor.rb
deleted file mode 100644
index a71f00672b..0000000000
--- a/bootstraptest/test_ractor.rb
+++ /dev/null
@@ -1,784 +0,0 @@
-# Ractor.current returns a current ractor
-assert_equal 'Ractor', %q{
-  Ractor.current.class
-}
-
-# Ractor.new returns new Ractor
-assert_equal 'Ractor', %q{
-  Ractor.new{}.class
-}
-
-# A Ractor can have a name
-assert_equal 'test-name', %q{
-  r = Ractor.new name: 'test-name' do
-  end
-  r.name
-}
-
-# If Ractor doesn't have a name, Ractor#name returns nil.
-assert_equal 'nil', %q{
-  r = Ractor.new do
-  end
-  r.name.inspect
-}
-
-# Raises exceptions if initialize with an invalid name
-assert_equal 'ok', %q{
-  begin
-    r = Ractor.new(name: [{}]) {}
-  rescue TypeError => e
-    'ok'
-  end
-}
-
-# Ractor.new must call with a block
-assert_equal "must be called with a block", %q{
-  begin
-    Ractor.new
-  rescue ArgumentError => e
-    e.message
-  end
-}
-
-# Ractor#inspect
-# Return only id and status for main ractor
-assert_equal "#<Ractor:#1 running>", %q{
-  Ractor.current.inspect
-}
-
-# Return id, loc, and status for no-name ractor
-assert_match /^#<Ractor:#([^ ]*?) .+:[0-9]+ terminated>$/, %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
-}
-
-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.recv in the Ractor block can receive the passed value.
-assert_equal 'ok', %q{
-  r = Ractor.new do
-    msg = Ractor.recv
-  end
-  r.send 'ok'
-  r.take
-}
-
-###
-###
-# 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'
-}
-
-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"]
-}
-
-assert_equal 'true', %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
-  }.all?('ok')
-}
-
-# 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
-}
-
-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.recv }
-
-  r.close
-  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.recv
-  end
-
-  r.close
-  begin
-    r.take
-  rescue Ractor::ClosedError
-    'ok'
-  else
-    'ng'
-  end
-}
-
-# Ractor.yield raises Ractor::ClosedError when outgoing port is closed.
-assert_equal 'ok', %q{
-  r = Ractor.new Ractor.current do |main|
-    Ractor.recv
-    main << true
-    Ractor.yield 1
-  end
-
-  r.close_outgoing
-  r << true
-  Ractor.recv
-
-  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.recv }
-  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.recv
-  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.recv
-  end
-
-  r.close_outgoing
-  begin
-    r.send(1)
-  rescue Ractor::ClosedError
-    'ng'
-  else
-    'ok'
-  end
-}
-
-# multiple Ractors can recv (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.recv
-    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, recv and yiled
-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
-  }
-  recv = []
-  take = []
-  yiel = []
-  until rs.empty?
-    r, v = Ractor.select(CR, *rs, yield_value: 'yield')
-    case r
-    when :recv
-      recv << v
-    when :yield
-      yiel << v
-    else
-      take << v
-      rs.delete r
-    end
-  end
-  [recv.all?('sendyield'), yiel.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.recv
-    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#recv
-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
-}
-
-# 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 'no _dump_data is defined for class 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 sharable and unsharable objects
-assert_equal "ok", %q{
-  echo_ractor = Ractor.new do
-    loop do
-      v = Ractor.recv
-      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).freeze, # Range on Struct
-    (1..).freeze,  # Range on Strcut
-    (..1).freeze,  # Range on Strcut
-    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
-    (1..2), (1..), (..1),
-  ]
-
-  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.recv
-    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.recv
-    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
-}
-
-# 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'
-}
-
-# 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 sharable-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 sharable-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
-}
-
-# cvar in sharable-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-sharable objects via constants by other Ractors is not allowed
-assert_equal 'can not access non-sharable 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
-}
-
-# Setting non-sharable 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.recv } }
-  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
-}
-
-###
-### 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
-}
-
-end # if !ENV['GITHUB_WORKFLOW']
diff --git a/bootstraptest/test_string.rb b/bootstraptest/test_string.rb
deleted file mode 100644
index 849dcd45b0..0000000000
--- a/bootstraptest/test_string.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-assert_normal_exit %q{
-  inspect.clear
-}, '[ruby-core:68110]'
diff --git a/bootstraptest/test_struct.rb b/bootstraptest/test_struct.rb
deleted file mode 100644
index a65964d5f9..0000000000
--- a/bootstraptest/test_struct.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-assert_equal 'Struct::Foo', %q{
-  Struct.instance_eval { const_set(:Foo, nil) }
-  Struct.new("Foo")
-  Struct::Foo
-}
diff --git a/bootstraptest/test_syntax.rb b/bootstraptest/test_syntax.rb
deleted file mode 100644
index fa27bf2aeb..0000000000
--- a/bootstraptest/test_syntax.rb
+++ /dev/null
@@ -1,906 +0,0 @@
-assert_equal %q{4}, %q{1 && 2 && 3 && 4}
-assert_equal %q{}, %q{1 && nil && 3 && 4}
-assert_equal %q{}, %q{1 && 2 && 3 && nil}
-assert_equal %q{false}, %q{1 && 2 && 3 && false}
-assert_equal %q{4}, %q{1 and 2 and 3 and 4}
-assert_equal %q{}, %q{1 and nil and 3 and 4}
-assert_equal %q{}, %q{1 and 2 and 3 and nil}
-assert_equal %q{false}, %q{1 and 2 and 3 and false}
-assert_equal %q{}, %q{nil && true}
-assert_equal %q{false}, %q{false && true}
-assert_equal %q{}, %q{
-  case 1
-  when 2
-    :ng
-  end}
-assert_equal %q{ok}, %q{
-  case 1
-  when 10,20,30
-    :ng1
-  when 1,2,3
-    :ok
-  when 100,200,300
-    :ng2
-  else
-    :elseng
-  end}
-assert_equal %q{elseok}, %q{
-  case 123
-  when 10,20,30
-    :ng1
-  when 1,2,3
-    :ng2
-  when 100,200,300
-    :ng3
-  else
-    :elseok
-  end
-}
-assert_equal %q{ok}, %q{
-  case 'test'
-  when /testx/
-    :ng1
-  when /test/
-    :ok
-  when /tetxx/
-    :ng2
-  else
-    :ng_else
-  end
-}
-assert_equal %q{ok}, %q{
-  case Object.new
-  when Object
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  case Object
-  when Object.new
-    :ng
-  else
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  case 'test'
-  when 'tes'
-    :ng
-  when 'te'
-    :ng
-  else
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  case 'test'
-  when 'tes'
-    :ng
-  when 'te'
-    :ng
-  when 'test'
-    :ok
-  end
-}
-assert_equal %q{ng}, %q{
-  case 'test'
-  when 'tes'
-    :ng
-  when /te/
-    :ng
-  else
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  case 'test'
-  when 'tes'
-    :ng
-  when /test/
-    :ok
-  else
-    :ng
-  end
-}
-assert_equal %q{100}, %q{
-  def test(arg)
-    case 1
-    when 2
-      3
-    end
-    return arg
-  end
-
-  test(100)
-}
-assert_equal %q{ok}, %q{
-  ary = [1, 2]
-  case 1
-  when *ary
-    :ok
-  else
-    :ng
-  end
-}
-assert_equal %q{ok}, %q{
-  ary = [1, 2]
-  case 3
-  when *ary
-    :ng
-  else
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  ary = [1, 2]
-  case 1
-  when :x, *ary
-    :ok
-  when :z
-    :ng1
-  else
-    :ng2
-  end
-}
-assert_equal %q{ok}, %q{
-  ary = [1, 2]
-  case 3
-  when :x, *ary
-    :ng1
-  when :z
-    :ng2
-  else
-    :ok
-  end
-}
-assert_equal %q{[:false, :false, :false, :false, :false, :false, :false, :false, :false, :false, :false, :then, :false, :false, :false, :then, :false, :false, :false, :then, :false, :false, :false, :then, :false, :false, :then, :then, :false, :false, :then, :then, :false, :false, :then, :then, :false, :false, :then, :then, :false, :then, :then, :then, :false, :then, :then, :then, :false, :then, :then, :then, :false, :then, :then, :then, :then, :then, :then, :then, :then, :then, :then, :then, :false, :false, :false, :then, :false, :false, :false, :then, :false, :false, :false, :false, :false, :false, :false, :false, :false, :false, :then, :then, :false, :false, :then, :then, :false, :false, :false, :then, :false, :false, :false, :then, :false, :then, :then, :then, :false, :then, :then, :then, :false, :false, :then, :then, :false, :false, :then, :then, :then, :then, :then, :then, :then, :then, :then, :then, :false, :then, :then, :then, :false, :then, :then, :then, :false, :false, 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-
-  def make_perm ary, num
-    if num == 1
-      ary.map{|e| [e]}
-    else
-      base = make_perm(ary, num-1)
-      res  = []
-      base.each{|b|
-        ary.each{|e|
-          res << [e] + b
-        }
-      }
-      res
-    end
-  end
-
-  def each_test
-    conds = make_perm(['fv', 'tv'], 3)
-    bangs = make_perm(['', '!'], 3)
-    exprs = make_perm(['and', 'or'], 3)
-    ['if', 'unless'].each{|syn|
-      conds.each{|cs|
-        bangs.each{|bs|
-          exprs.each{|es|
-            yield(syn, cs, bs, es)
-          }
-        }
-      }
-    }
-  end
-
-  fv = false
-  tv = true
-
-  $ans = []
-  each_test{|syn, conds, bangs, exprs|
-    c1, c2, c3 = conds
-    bang1, bang2, bang3 = bangs
-    e1, e2 = exprs
-    eval %Q{
-      #{syn} #{bang1}#{c1} #{e1} #{bang2}#{c2} #{e2} #{bang3}#{c3}
-        $ans << :then
-      else
-        $ans << :false
-      end
-    }
-  }
-
-  each_test{|syn, conds, bangs, exprs|
-    c1, c2, c3 = conds
-    bang1, bang2, bang3 = bangs
-    e1, e2 = exprs
-    eval %Q{
-      #{syn} #{bang1}#{c1} #{e1} #{bang2}#{c2} #{e2} #{bang3}#{c3}
-        $ans << :then
-      end
-      $ans << :sep
-    }
-  }
-  $ans
-}
-assert_equal %q{}, %q{
-  defined?(m)
-}
-assert_equal %q{method}, %q{
-  def m
-  end
-  defined?(m)
-}
-assert_equal %q{}, %q{
-  defined?(a.class)
-}
-assert_equal %q{method}, %q{
-  a = 1
-  defined?(a.class)
-}
-assert_equal %q{["method", "method", "method", "method", nil, nil, "method", "method", "method", nil]}, %q{
-  class C
-    def test
-      [defined?(m1()), defined?(self.m1), defined?(C.new.m1),
-       defined?(m2()), defined?(self.m2), defined?(C.new.m2),
-       defined?(m3()), defined?(self.m3), defined?(C.new.m3)]
-    end
-    def m1
-    end
-    private
-    def m2
-    end
-    protected
-    def m3
-    end
-  end
-  C.new.test + [defined?(C.new.m3)]
-}
-assert_equal %q{[nil, nil, nil, nil, "global-variable", "global-variable", nil, nil]}, %q{
-  $ans = [defined?($1), defined?($2), defined?($3), defined?($4)]
-  /(a)(b)/ =~ 'ab'
-  $ans + [defined?($1), defined?($2), defined?($3), defined?($4)]
-}
-assert_equal %q{nilselftruefalse}, %q{
-  defined?(nil) + defined?(self) +
-    defined?(true) + defined?(false)
-}
-assert_equal %q{}, %q{
-  defined?(@a)
-}
-assert_equal %q{instance-variable}, %q{
-  @a = 1
-  defined?(@a)
-}
-assert_equal %q{}, %q{
-  defined?(@@a)
-}
-assert_equal %q{class variable}, %q{
-  class A
-    @@a = 1
-    defined?(@@a)
-  end
-}
-assert_equal %q{}, %q{
-  defined?($a)
-}
-assert_equal %q{global-variable}, %q{
-  $a = 1
-  defined?($a)
-}
-assert_equal %q{}, %q{
-  defined?(C_definedtest)
-}
-assert_equal %q{constant}, %q{
-  C_definedtest = 1
-  defined?(C_definedtest)
-}
-assert_equal %q{}, %q{
-  defined?(::C_definedtest)
-}
-assert_equal %q{constant}, %q{
-  C_definedtest = 1
-  defined?(::C_definedtest)
-}
-assert_equal %q{}, %q{
-  defined?(C_definedtestA::C_definedtestB::C_definedtestC)
-}
-assert_equal %q{constant}, %q{
-  class C_definedtestA
-    class C_definedtestB
-      C_definedtestC = 1
-    end
-  end
-  defined?(C_definedtestA::C_definedtestB::C_definedtestC)
-}
-assert_equal %q{30}, %q{
-  sum = 0
-  30.times{|ib|
-    if ib % 10 == 0 .. true
-      sum += ib
-    end
-  }
-  sum
-}
-assert_equal %q{63}, %q{
-  sum = 0
-  30.times{|ib|
-    if ib % 10 == 0 ... true
-      sum += ib
-    end
-  }
-  sum
-}
-assert_equal %q{[["NUM", "Type: NUM\n"], ["NUM", "123\n"], ["NUM", "456\n"], ["NUM", "Type: ARP\n"], ["NUM", "aaa\n"], ["NUM", "bbb\n"], ["NUM", "\f\n"], ["ARP", "Type: ARP\n"], ["ARP", "aaa\n"], ["ARP", "bbb\n"]]}, %q{
-  t = nil
-  unless ''.respond_to? :lines
-    class String
-      def lines
-        self
-      end
-    end
-  end
-  ary = []
-"this must not print
-Type: NUM
-123
-456
-Type: ARP
-aaa
-bbb
-\f
-this must not print
-hoge
-Type: ARP
-aaa
-bbb
-".lines.each{|l|
-    if (t = l[/^Type: (.*)/, 1])..(/^\f/ =~ l)
-      ary << [t, l]
-    end
-  }
-  ary
-}
-assert_equal %q{1}, %q{if true  then 1 ; end}
-assert_equal %q{}, %q{if false then 1 ; end}
-assert_equal %q{1}, %q{if true  then 1 ; else; 2; end}
-assert_equal %q{2}, %q{if false then 1 ; else; 2; end}
-assert_equal %q{}, %q{if true  then   ; elsif true then ; 1 ; end}
-assert_equal %q{1}, %q{if false then   ; elsif true then ; 1 ; end}
-assert_equal %q{}, %q{unless true  then 1 ; end}
-assert_equal %q{1}, %q{unless false then 1 ; end}
-assert_equal %q{2}, %q{unless true  then 1 ; else; 2; end}
-assert_equal %q{1}, %q{unless false then 1 ; else; 2; end}
-assert_equal %q{1}, %q{1 if true}
-assert_equal %q{}, %q{1 if false}
-assert_equal %q{}, %q{1 if nil}
-assert_equal %q{}, %q{1 unless true}
-assert_equal %q{1}, %q{1 unless false}
-assert_equal %q{1}, %q{1 unless nil}
-assert_equal %q{1}, %q{1 || 2 || 3 || 4}
-assert_equal %q{1}, %q{1 || false || 3 || 4}
-assert_equal %q{2}, %q{nil || 2 || 3 || 4}
-assert_equal %q{2}, %q{false || 2 || 3 || 4}
-assert_equal %q{false}, %q{nil || false || nil || false}
-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
-  when 1==2, 2==3
-    :ng1
-  when false, 4==5
-    :ok
-  when false
-    :ng2
-  else
-    :elseng
-  end
-}
-assert_equal %q{ok}, %q{
-  case
-  when nil, nil
-    :ng1
-  when 1,2,3
-    :ok
-  when false, false
-    :ng2
-  else
-    :elseng
-  end
-}
-assert_equal %q{elseok}, %q{
-  case
-  when nil
-    :ng1
-  when false
-    :ng2
-  else
-    :elseok
-  end}
-assert_equal %q{}, %q{
-  case
-  when 1
-  end
-}
-assert_equal %q{ok}, %q{
-  r = nil
-  ary = []
-  case
-  when false
-    r = :ng1
-  when false, false
-    r = :ng2
-  when *ary
-    r = :ng3
-  when false, *ary
-    r = :ng4
-  when true, *ary
-    r = :ok
-  end
-  r
-}
-assert_equal %q{ok}, %q{
-  ary = []
-  case
-  when false, *ary
-    :ng
-  else
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  ary = [false, nil]
-  case
-  when *ary
-    :ng
-  else
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  ary = [false, nil]
-  case
-  when *ary
-    :ng
-  when true
-    :ok
-  else
-    :ng2
-  end
-}
-assert_equal %q{ng}, %q{
-  ary = [false, nil]
-  case
-  when *ary
-    :ok
-  else
-    :ng
-  end
-}
-assert_equal %q{ok}, %q{
-  ary = [false, true]
-  case
-  when *ary
-    :ok
-  else
-    :ng
-  end
-}
-assert_equal %q{ok}, %q{
-  ary = [false, true]
-  case
-  when false, false
-  when false, *ary
-    :ok
-  else
-    :ng
-  end
-}
-assert_equal %q{}, %q{
-  i = 0
-  while i < 10
-    i+=1
-  end}
-assert_equal %q{10}, %q{
-  i = 0
-  while i < 10
-    i+=1
-  end; i}
-assert_equal %q{}, %q{
-  i = 0
-  until i > 10
-    i+=1
-  end}
-assert_equal %q{11}, %q{
-  i = 0
-  until i > 10
-    i+=1
-  end; i}
-assert_equal %q{1}, %q{
-  i = 0
-  begin
-    i+=1
-  end while false
-  i
-}
-assert_equal %q{1}, %q{
-  i = 0
-  begin
-    i+=1
-  end until true
-  i
-}
-def assert_syntax_error expected, code, message = ''
-  assert_equal "#{expected}",
-    "begin eval(%q{#{code}}, nil, '', 0)"'; rescue SyntaxError => e; e.message[/\A:(?:\d+:)? (.*)/, 1] end', 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 *, 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}
-assert_equal %q{0}, %q{[*0];0}, '[ruby-dev:31102]'
-assert_syntax_error "syntax error, unexpected ')'", %q{v0,(*,v1,) = 0}, '[ruby-dev:31104]'
-assert_equal %q{1}, %q{
-  class << (ary=[]); def []; 0; end; def []=(x); super(0,x);end;end; ary[]+=1
-}, '[ruby-dev:31110]'
-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-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]'
-assert_equal 'ok', %q{
-  1.times {
-    begin
-    ensure
-      next
-    end
-  }; :ok
-}, '[ruby-dev:31373]'
-assert_equal 'ok', %q{
-  flag = false
-  1.times {
-    next if flag
-    flag = true
-    begin
-    ensure
-      redo
-    end
-  }; :ok
-}, '[ruby-dev:31373]'
-
-assert_equal 'ok', %q{
-  1.times{
-    p(1, (next; 2))
-  }; :ok
-}
-assert_equal '3', %q{
-  i = 0
-  1 + (while true
-         break 2 if (i+=1) > 1
-         next
-       end)
-}
-assert_equal '3', %q{
-  i = 0
-  1 + (while true
-         break 2 if (i+=1) > 1
-         p(1, (next; 2))
-       end)
-}
-# redo
-assert_equal 'ok', %q{
-  i = 0
-  1.times{
-    break if i>1
-    i+=1
-    p(1, (redo; 2))
-  }; :ok
-}
-assert_equal '3', %q{
-  i = 0
-  1 + (while true
-         break 2 if (i+=1) > 1
-         redo
-       end)
-}
-assert_equal '3', %q{
-  i = 0
-  1 + (while true
-         break 2 if (i+=1) > 1
-         p(1, (redo; 2))
-       end)
-}
-assert_equal '1', %q{
-  a = [0]
-  a[*a]+=1
-}
-assert_equal '2', %q{
-  ary = [0]
-  case 1
-  when *ary, 1
-    1
-  end +
-  case
-  when *ary
-    1
-  end
-}
-
-assert_match /invalid multibyte char/, %q{
-  STDERR.reopen(STDOUT)
-  eval("\"\xf0".force_encoding("utf-8"))
-}, '[ruby-dev:32429]'
-
-# method ! and !=
-assert_equal 'true', %q{!false}
-assert_equal 'true', %q{1 == 1}
-assert_equal 'true', %q{1 != 2}
-assert_equal 'true', %q{
-  class C; def !=(obj); true; end; end
-  C.new != 1
-}
-assert_equal 'true', %q{
-  class C; def !@; true; end; end
-  !C.new
-}
-assert_normal_exit %q{
-  eval "while true; return; end rescue p $!"
-}, '[ruby-dev:31663]'
-assert_equal '1', %q{
-  def bar
-    raise
-  end
-
-  def foo
-    1.times{
-      begin
-        return bar
-      rescue
-        :ok
-      end
-    }
-  end
-
-  foo
-}
-
-assert_equal 'ok', %q{
-  counter = 2
-  while true
-    counter -= 1
-    next if counter != 0
-    break
-  end
-  :ok
-}, '[ruby-core:14385]'
-
-assert_equal 'ok', %q{
-  counter = 2
-  while true
-    counter -= 1
-    next if counter != 0
-    break :ok
-  end # direct
-}, '[ruby-core:14385]'
-
-assert_equal 'ok', %q{
-  counter = 2
-  while true
-    counter -= 1
-    break if counter == 0
-    "#{next}"
-  end
-  :ok
-}, 'reported by Yusuke ENDOH'
-
-assert_equal 'ok', %q{
-  counter = 2
-  while true
-    counter -= 1
-    break if counter == 0
-    next
-    redo
-  end
-  :ok
-}, 'reported by Yusuke ENDOH'
-
-assert_equal 'ok', %q{
-  counter = 2
-  while true
-    counter -= 1
-    break if counter == 0
-    next
-    "#{ redo }"
-  end
-  :ok
-}, 'reported by Yusuke ENDOH'
-
-assert_normal_exit %q{
-  begin
-    raise
-  rescue
-    counter = 2
-    while true
-      counter -= 1
-      break if counter == 0
-      next
-      retry
-    end
-  end
-}, 'reported by Yusuke ENDOH'
-
-assert_normal_exit %q{
-  counter = 2
-  while true
-    counter -= 1
-    break if counter == 0
-    next
-    "#{ break }"
-  end
-}, 'reported by Yusuke ENDOH'
-
-assert_normal_exit %q{
-  counter = 2
-  while true
-    counter -= 1
-    next if counter != 0
-    "#{ break }"
-  end
-}, 'reported by Yusuke ENDOH'
-
-assert_equal 'ok', %q{
-  1.times do
-    [
-      1, 2, 3, 4, 5, 6, 7, 8,
-      begin
-        false ? next : p
-        break while true
-      end
-    ]
-  end
-  :ok
-}, '[ruby-dev:32882]'
-
-assert_equal "1\n2\n", %q{
-  i = 0
-  while i<2
-    i += 1
-    next p(i)
-  end
-}
-
-assert_valid_syntax('1.times {|i|print (42),1;}', '[ruby-list:44479]')
-
-assert_equal 'ok', %q{
-  def a() end
-  begin
-    if defined?(a(1).a)
-      :ng
-    else
-      :ok
-    end
-  rescue
-    :ng
-  end
-}, '[ruby-core:16010]'
-
-assert_equal 'ok', %q{
-  def a() end
-  begin
-    if defined?(a::B)
-      :ng
-    else
-      :ok
-    end
-  rescue
-    :ng
-  end
-}, '[ruby-core:16010]'
-
-assert_normal_exit %q{
-  defined? C && 0
-}
-
-assert_normal_exit %q{
-  class C
-    def m
-      defined?(super())
-    end
-  end
-  C.new.m
-}
-
-assert_equal 'ok', %q{
-  class X < RuntimeError;end
-  x = [X]
-  begin
-   raise X
-  rescue *x
-   :ok
-  end
-}, '[ruby-core:14537]'
-
-assert_equal 'ok', %q{
-  a = [false]
-  (a[0] &&= true) == false ? :ok : :ng
-}, '[ruby-dev:34679]'
-
-assert_normal_exit %q{
-  a = []
-  100.times {|i| a << i << nil << nil }
-  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
deleted file mode 100644
index 38a55ff229..0000000000
--- a/bootstraptest/test_thread.rb
+++ /dev/null
@@ -1,500 +0,0 @@
-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{
-  }.join
-  :ok
-}
-assert_equal %q{ok}, %q{
-  Thread.new{
-    :ok
-  }.value
-}
-assert_equal %q{ok}, %q{
-begin
-  v = 0
-  (1..200).map{|i|
-    Thread.new{
-      i
-    }
-  }.each{|t|
-    v += t.value
-  }
-  v == 20100 ? :ok : v
-rescue ThreadError => e
-  :ok if /can't create Thread/ =~ e.message
-end
-}
-assert_equal %q{ok}, %q{
-begin
-  :ok if 5000 == 5000.times{|e|
-    (1..2).map{
-      Thread.new{
-      }
-    }.each{|e|
-      e.join()
-    }
-  }
-rescue ThreadError => e
-  /can't create Thread/ =~ e.message ? :ok : e.message
-end
-}
-assert_equal %q{ok}, %q{
-begin
-  :ok if 5000 == 5000.times{|e|
-    (1..2).map{
-      Thread.new{
-      }
-    }.each{|e|
-      e.join(1000000000)
-    }
-  }
-rescue ThreadError => e
-  /can't create Thread/ =~ e.message ? :ok : e.message
-end
-}
-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{
-    Thread.new{loop{Thread.pass}}
-  }
-}
-assert_equal %q{ok}, %q{
-  Thread.new{
-    :ok
-  }.join.value
-}
-assert_equal %q{ok}, %q{
-  begin
-    Thread.new{
-      raise "ok"
-    }.join
-  rescue => e
-    e
-  end
-}
-assert_equal %q{ok}, %q{
-  ans = nil
-  t = Thread.new{
-    begin
-      sleep 0.5
-    ensure
-      ans = :ok
-    end
-  }
-  Thread.pass until t.stop?
-  t.kill
-  t.join
-  ans
-}
-assert_equal %q{ok}, %q{
-  t = Thread.new{
-    sleep
-  }
-  sleep 0.1
-  t.raise
-  begin
-    t.join
-    :ng
-  rescue
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  t = Thread.new{
-    loop{}
-  }
-  Thread.pass
-  t.raise
-  begin
-    t.join
-    :ng
-  rescue
-    :ok
-  end
-}
-assert_equal %q{ok}, %q{
-  t = Thread.new{
-  }
-  Thread.pass
-  t.join
-  t.raise # raise to exited thread
-  begin
-    t.join
-    :ok
-  rescue
-    :ng
-  end
-}
-assert_equal %q{run}, %q{
-  t = Thread.new{
-    loop{}
-  }
-  st = t.status
-  t.kill
-  st
-}
-assert_equal %q{sleep}, %q{
-  t = Thread.new{
-    sleep
-  }
-  sleep 0.1
-  st = t.status
-  t.kill
-  st
-}
-assert_equal %q{false}, %q{
-  t = Thread.new{
-  }
-  t.kill
-  sleep 0.1
-  t.status
-}
-assert_equal %q{[ThreadGroup, true]}, %q{
-  ptg = Thread.current.group
-  Thread.new{
-    ctg = Thread.current.group
-    [ctg.class, ctg == ptg]
-  }.value
-}
-assert_equal %q{[1, 1]}, %q{
-  thg = ThreadGroup.new
-
-  t = Thread.new{
-    thg.add Thread.current
-    sleep
-  }
-  sleep 0.1
-  [thg.list.size, ThreadGroup::Default.list.size]
-}
-assert_equal %q{true}, %q{
-  thg = ThreadGroup.new
-
-  t = Thread.new{sleep 5}
-  thg.add t
-  thg.list.include?(t)
-}
-assert_equal %q{[true, nil, true]}, %q{
-  /a/ =~ 'a'
-  $a = $~
-  Thread.new{
-    $b = $~
-    /b/ =~ 'b'
-    $c = $~
-  }.join
-  $d = $~
-  [$a == $d, $b, $c != $d]
-}
-assert_equal %q{11}, %q{
-  Thread.current[:a] = 1
-  Thread.new{
-    Thread.current[:a] = 10
-    Thread.pass
-    Thread.current[:a]
-  }.value + Thread.current[:a]
-}
-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
-}, '[ruby-dev:31371]'
-
-assert_equal 'true', %{
-  t = Thread.new { loop {} }
-  begin
-    pid = fork {
-      exit t.status != "run"
-    }
-    Process.wait pid
-    $?.success?
-  rescue NotImplementedError
-    true
-  end
-}
-
-assert_equal 'ok', %{
-  open("zzz.rb", "w") do |f|
-    f.puts <<-END
-      begin
-        Thread.new { fork { GC.start } }.join
-        pid, status = Process.wait2
-        $result = status.success? ? :ok : :ng
-      rescue NotImplementedError
-        $result = :ok
-      end
-    END
-  end
-  require "./zzz.rb"
-  $result
-}
-
-assert_finish 3, %{
-  th = Thread.new {sleep 0.2}
-  th.join(0.1)
-  th.join
-}
-
-assert_finish 3, %{
-  require 'timeout'
-  th = Thread.new {sleep 0.2}
-  begin
-    Timeout.timeout(0.1) {th.join}
-  rescue Timeout::Error
-  end
-  th.join
-}
-
-assert_normal_exit %q{
-  STDERR.reopen(STDOUT)
-  exec "/"
-}
-
-assert_normal_exit %q{
-  (0..10).map {
-    Thread.new {
-     10000.times {
-        Object.new.to_s
-      }
-    }
-  }.each {|t|
-    t.join
-  }
-}
-
-assert_equal 'ok', %q{
-  def m
-    t = Thread.new { while true; // =~ "" end }
-    sleep 0.01
-    10.times {
-      if /((ab)*(ab)*)*(b)/ =~ "ab"*7
-        return :ng if !$4
-        return :ng if $~.size != 5
-      end
-    }
-    :ok
-  ensure
-    Thread.kill t
-  end
-  m
-}, '[ruby-dev:34492]'
-
-assert_normal_exit %q{
-  g = enum_for(:local_variables)
-  loop { g.next }
-}, '[ruby-dev:34128]'
-
-assert_normal_exit %q{
-  g = enum_for(:block_given?)
-  loop { g.next }
-}, '[ruby-dev:34128]'
-
-assert_normal_exit %q{
-  g = enum_for(:binding)
-  loop { g.next }
-}, '[ruby-dev:34128]'
-
-assert_normal_exit %q{
-  g = "abc".enum_for(:scan, /./)
-  loop { g.next }
-}, '[ruby-dev:34128]'
-
-assert_normal_exit %q{
-  g = Module.enum_for(:new)
-  loop { g.next }
-}, '[ruby-dev:34128]'
-
-assert_normal_exit %q{
-  Thread.new("foo", &Object.method(:class_eval)).join
-}, '[ruby-dev:34128]'
-
-assert_equal 'ok', %q{
-  begin
-    Thread.new { Thread.stop }
-    Thread.stop
-    :ng
-  rescue Exception
-    :ok
-  end
-}
-
-assert_equal 'ok', %q{
-  begin
-    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
-  end
-}
-
-assert_equal 'ok', %q{
-  m = Thread::Mutex.new
-  Thread.new { m.lock }; sleep 0.1; m.lock
-  :ok
-}
-
-assert_equal 'ok', %q{
-  m = Thread::Mutex.new
-  Thread.new { m.lock }; m.lock
-  :ok
-}
-
-assert_equal 'ok', %q{
-  m = Thread::Mutex.new
-  Thread.new { m.lock }.join; m.lock
-  :ok
-}
-
-assert_equal 'ok', %q{
-  m = Thread::Mutex.new
-  Thread.new { m.lock; sleep 0.2 }
-  sleep 0.1; m.lock
-  :ok
-}
-
-assert_equal 'ok', %q{
-  m = Thread::Mutex.new
-  Thread.new { m.lock; sleep 0.2; m.unlock }
-  sleep 0.1; m.lock
-  :ok
-}
-
-assert_equal 'ok', %q{
-  t = Thread.new {`echo`}
-  t.join
-  $? ? :ng : :ok
-}, '[ruby-dev:35414]'
-
-assert_equal 'ok', %q{
-  begin
-    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
deleted file mode 100644
index 7c3653dab7..0000000000
--- a/builtin.c
+++ /dev/null
@@ -1,69 +0,0 @@
-#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
deleted file mode 100644
index 3b2f477654..0000000000
--- a/builtin.h
+++ /dev/null
@@ -1,83 +0,0 @@
-#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
deleted file mode 100644
index a04d1d4709..0000000000
--- a/ccan/build_assert/build_assert.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/* 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
deleted file mode 100644
index 1f77a535e4..0000000000
--- a/ccan/check_type/check_type.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/* 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
deleted file mode 100644
index ae3e1fc81f..0000000000
--- a/ccan/container_of/container_of.h
+++ /dev/null
@@ -1,142 +0,0 @@
-/* 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
deleted file mode 100644
index 89de354795..0000000000
--- a/ccan/licenses/BSD-MIT
+++ /dev/null
@@ -1,17 +0,0 @@
-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
deleted file mode 100644
index feb9b118e6..0000000000
--- a/ccan/licenses/CC0
+++ /dev/null
@@ -1,28 +0,0 @@
-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
deleted file mode 100644
index 7d219307bc..0000000000
--- a/ccan/list/list.h
+++ /dev/null
@@ -1,788 +0,0 @@
-/* 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
deleted file mode 100644
index 9a9da9cd3f..0000000000
--- a/ccan/str/str.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* 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 857d86311d..1f8bccc109 100644
--- a/class.c
+++ b/class.c
@@ -1,2283 +1,639 @@
-/**********************************************************************
+/************************************************
 
   class.c -
 
   $Author$
+  $Date$
   created at: Tue Aug 10 15:05:44 JST 1993
 
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
-
-**********************************************************************/
-
-/*!
- * \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>
+  Copyright (C) 1993-1998 Yukihiro Matsumoto
 
-#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__
+#include "ruby.h"
+#include "node.h"
+#include "st.h"
 
-void
-rb_class_subclass_add(VALUE super, VALUE klass)
-{
-    rb_subclass_entry_t *entry, *head;
+struct st_table *new_idhash();
+extern st_table *rb_class_tbl;
 
-    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;
-	}
+extern VALUE cClass;
+extern VALUE cModule;
 
-	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)
-{
-    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)
+class_new(super)
+    VALUE super;
 {
-    VALUE klass = class_alloc(T_CLASS, rb_cClass);
+    NEWOBJ(klass, struct RClass);
+    OBJSETUP(klass, cClass, T_CLASS);
 
-    RCLASS_SET_SUPER(klass, super);
-    RCLASS_M_TBL_INIT(klass);
+    klass->super = super;
+    klass->iv_tbl = 0;
+    klass->m_tbl = 0;		/* safe GC */
+    klass->m_tbl = new_idhash();
 
     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 (!RB_TYPE_P(super, T_CLASS)) {
-	rb_raise(rb_eTypeError, "superclass must be a Class (%"PRIsVALUE" given)",
-		 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)
+singleton_class_new(super)
+    VALUE super;
 {
-    Check_Type(super, T_CLASS);
-    rb_check_inheritable(super);
-    return rb_class_boot(super);
-}
+    VALUE klass = class_new(super);
 
-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;
-};
-
-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;
+    FL_SET(klass, FL_SINGLETON);
+    return klass;
 }
 
-struct clone_const_arg {
-    VALUE klass;
-    struct rb_id_table *tbl;
-};
-
 static int
-clone_const(ID key, const rb_const_entry_t *ce, struct clone_const_arg *arg)
-{
-    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);
-
-    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");
-    }
-}
-
-static void
-copy_tables(VALUE clone, VALUE orig)
+clone_method(mid, body, tbl)
+    ID mid;
+    NODE *body;
+    st_table *tbl;
 {
-    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_M_TBL(clone) = 0;
-    if (RCLASS_IV_TBL(orig)) {
-	st_data_t id;
-
-	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), &id, 0);
-	CONST_ID(id, "__classid__");
-	st_delete(RCLASS_IV_TBL(clone), &id, 0);
-    }
-    if (RCLASS_CONST_TBL(orig)) {
-	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(orig), clone_const_i, &arg);
-    }
-}
-
-static void ensure_origin(VALUE klass);
-
-/* :nodoc: */
-VALUE
-rb_mod_init_copy(VALUE clone, VALUE orig)
-{
-    if (RB_TYPE_P(clone, T_CLASS)) {
-        class_init_copy_check(clone, orig);
-    }
-    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);
-    }
-
-    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)
-{
-    return rb_singleton_class_clone_and_attach(obj, Qundef);
+    st_insert(tbl, mid, NEW_METHOD(body->nd_body, body->nd_noex));
+    return ST_CONTINUE;
 }
 
 VALUE
-rb_singleton_class_clone_and_attach(VALUE obj, VALUE attach)
+singleton_class_clone(klass)
+    VALUE klass;
 {
-    const VALUE klass = RBASIC(obj)->klass;
-
     if (!FL_TEST(klass, FL_SINGLETON))
 	return klass;
     else {
 	/* copy singleton(unnamed) class */
-	VALUE clone = class_alloc(RBASIC(klass)->flags, 0);
-
-	if (BUILTIN_TYPE(obj) == T_CLASS) {
-	    RBASIC_SET_CLASS(clone, clone);
-	}
-	else {
-	    RBASIC_SET_CLASS(clone, rb_singleton_class_clone(klass));
-	}
-
-	RCLASS_SET_SUPER(clone, RCLASS_SUPER(klass));
-	RCLASS_EXT(clone)->allocator = RCLASS_EXT(klass)->allocator;
-	if (RCLASS_IV_TBL(klass)) {
-	    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);
-	}
-	rb_singleton_class_attached(RBASIC(clone)->klass, clone);
+	NEWOBJ(clone, struct RClass);
+	CLONESETUP(clone, klass);
+
+	clone->super = RCLASS(klass)->super;
+	clone->iv_tbl = 0;
+	clone->m_tbl = 0;
+	clone->m_tbl = new_idhash();
+	st_foreach(RCLASS(klass)->m_tbl, clone_method, clone->m_tbl);
 	FL_SET(clone, FL_SINGLETON);
-
-	return clone;
+	return (VALUE)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)
+singleton_class_attached(klass, obj)
+    VALUE klass, obj;
 {
-    if (FL_TEST(klass, FL_SINGLETON)) {
-	if (!RCLASS_IV_TBL(klass)) {
-	    RCLASS_IV_TBL(klass) = st_init_numtable();
-	}
-	rb_class_ivar_set(klass, id_attached, obj);
-    }
+    if (FL_TEST(klass, FL_SINGLETON))
+	rb_iv_set(klass, "__attached__", obj);
 }
 
-
-
-#define METACLASS_OF(k) RBASIC(k)->klass
-#define SET_METACLASS_OF(k, cls) RBASIC_SET_CLASS(k, cls)
-
-/*!
- * 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 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)
-{
-    return (RB_TYPE_P(rb_attr_get(sklass, id_attached), T_CLASS) &&
-	    !rb_singleton_class_has_metaclass_p(sklass));
-}
-
-/*!
- * 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 {
-	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));
-    }
-
-    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);
-
-    return metaclass;
-}
-
-/*!
- * 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(id, 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 unused)
-{
-    if (BUILTIN_TYPE(obj) == T_CLASS) {
-	return make_metaclass(obj);
-    }
-    else {
-	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)
+rb_define_class_id(id, super)
+    ID id;
+    VALUE super;
 {
     VALUE klass;
 
-    if (!super) super = rb_cObject;
-    klass = rb_class_new(super);
-    rb_make_metaclass(klass, RBASIC(super)->klass);
+    if (!super) super = cObject;
+    klass = class_new(super);
+    rb_name_class(klass, id);
+    /* make metaclass */
+    RBASIC(klass)->klass = singleton_class_new(RBASIC(super)->klass);
+    singleton_class_attached(RBASIC(klass)->klass, klass);
+    rb_funcall(super, rb_intern("inherited"), 1, klass);
 
     return klass;
 }
 
-
-/*!
- * 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;
-    if (!super) super = rb_cObject;
-    CONST_ID(inherited, "inherited");
-    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)
+rb_define_class(name, super)
+    char *name;
+    VALUE super;
 {
     VALUE klass;
     ID id;
 
     id = rb_intern(name);
-    if (rb_const_defined(rb_cObject, id)) {
-	klass = rb_const_get(rb_cObject, id);
-	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_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(id, klass);
-	return klass;
-    }
-    if (!super) {
-	rb_raise(rb_eArgError, "no super class for `%s'", name);
-    }
     klass = rb_define_class_id(id, super);
-    rb_vm_add_root_module(id, klass);
-    rb_const_set(rb_cObject, id, klass);
-    rb_class_inherited(super, klass);
+    st_add_direct(rb_class_tbl, id, 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)
+rb_define_class_under(outer, name, super)
+    VALUE outer;
+    char *name;
+    VALUE super;
 {
     VALUE klass;
+    ID id;
 
-    if (rb_const_defined_at(outer, id)) {
-	klass = rb_const_get_at(outer, id);
-	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_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(id, klass);
-
-	return klass;
-    }
-    if (!super) {
-	rb_raise(rb_eArgError, "no super class for `%"PRIsVALUE"::%"PRIsVALUE"'",
-		 rb_class_path(outer), rb_id2str(id));
-    }
+    id = rb_intern(name);
     klass = rb_define_class_id(id, super);
-    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(id, klass);
-    rb_gc_register_mark_object(klass);
+    rb_set_class_path(klass, outer, name);
 
     return klass;
 }
 
 VALUE
-rb_module_new(void)
+module_new()
 {
-    VALUE mdl = class_alloc(T_MODULE, rb_cModule);
-    RCLASS_M_TBL_INIT(mdl);
+    NEWOBJ(mdl, struct RClass);
+    OBJSETUP(mdl, cModule, T_MODULE);
+
+    mdl->super = 0;
+    mdl->iv_tbl = 0;
+    mdl->m_tbl = 0;
+    mdl->m_tbl = new_idhash();
+
     return (VALUE)mdl;
 }
 
 VALUE
-rb_define_module_id(ID id)
+rb_define_module_id(id)
+    ID id;
 {
-    return rb_module_new();
+    extern st_table *rb_class_tbl;
+    VALUE mdl = module_new();
+
+    rb_name_class(mdl, id);
+
+    return mdl;
 }
 
 VALUE
-rb_define_module(const char *name)
+rb_define_module(name)
+    char *name;
 {
     VALUE module;
     ID id;
 
     id = rb_intern(name);
-    if (rb_const_defined(rb_cObject, id)) {
-	module = rb_const_get(rb_cObject, id);
-	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(id, module);
-	return module;
-    }
     module = rb_define_module_id(id);
-    rb_vm_add_root_module(id, module);
-    rb_gc_register_mark_object(module);
-    rb_const_set(rb_cObject, id, module);
+    st_add_direct(rb_class_tbl, id, module);
 
     return module;
 }
 
 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)
+rb_define_module_under(outer, name)
+    VALUE outer;
+    char *name;
 {
     VALUE module;
+    ID id;
 
-    if (rb_const_defined_at(outer, id)) {
-	module = rb_const_get_at(outer, id);
-	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;
-    }
+    id = rb_intern(name);
     module = rb_define_module_id(id);
     rb_const_set(outer, id, module);
-    rb_set_class_path_string(module, outer, rb_id2str(id));
-    rb_gc_register_mark_object(module);
+    rb_set_class_path(module, outer, name);
 
     return module;
 }
 
-VALUE
-rb_include_class_new(VALUE module, VALUE super)
+static VALUE
+include_class_new(module, super)
+    VALUE module, super;
 {
-    VALUE klass = class_alloc(T_ICLASS, rb_cClass);
-
-    RCLASS_M_TBL(klass) = RCLASS_M_TBL(module);
+    NEWOBJ(klass, struct RClass);
+    OBJSETUP(klass, cClass, T_ICLASS);
 
-    RCLASS_SET_ORIGIN(klass, klass);
-    if (BUILTIN_TYPE(module) == T_ICLASS) {
-	module = RBASIC(module)->klass;
+    klass->m_tbl = RCLASS(module)->m_tbl;
+    klass->iv_tbl = RCLASS(module)->iv_tbl;
+    klass->super = super;
+    if (TYPE(module) == T_ICLASS) {
+	RBASIC(klass)->klass = RBASIC(module)->klass;
     }
-    RUBY_ASSERT(!RB_TYPE_P(module, T_ICLASS));
-    if (!RCLASS_IV_TBL(module)) {
-	RCLASS_IV_TBL(module) = st_init_numtable();
-    }
-    if (!RCLASS_CONST_TBL(module)) {
-	RCLASS_CONST_TBL(module) = rb_id_table_create(0);
+    else {
+	RBASIC(klass)->klass = module;
     }
-    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)
-{
-    int changed = 0;
-
-    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;
-            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_include_module(klass, module)
+    VALUE klass, module;
 {
-    rb_add_refined_method_entry((VALUE)data, key);
-    return ID_TABLE_CONTINUE;
-}
+    VALUE p;
 
-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;
-}
+    if (NIL_P(module)) return;
+    if (klass == module) return;
 
-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;
+    switch (TYPE(module)) {
+      case T_MODULE:
+      case T_CLASS:
+      case T_ICLASS:
+	break;
+      default:
+	Check_Type(module, T_MODULE);
+    }
 
     while (module) {
-	int superclass_seen = FALSE;
-	struct rb_id_table *tbl;
-
-	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 (type == T_ICLASS) {
-		if (RCLASS_M_TBL(p) == RCLASS_M_TBL(module)) {
-		    if (!superclass_seen) {
-			c = p;  /* move insertion point */
-		    }
-		    goto skip;
+	for (p = RCLASS(klass)->super; p; p = RCLASS(p)->super) {
+	    if (BUILTIN_TYPE(p) == T_ICLASS &&
+		RCLASS(p)->m_tbl == RCLASS(module)->m_tbl) {
+		if (RCLASS(module)->super) {
+		    rb_include_module(p, RCLASS(module)->super);
 		}
-	    }
-	    else if (type == T_CLASS) {
-		if (!search_super) break;
-                superclass_seen = TRUE;
+		return;
 	    }
 	}
-
-        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 (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;
-    VALUE klass = (VALUE)data;
-    struct rb_id_table *tbl = RCLASS_M_TBL(klass);
-
-    if (me->def->type == VM_METHOD_TYPE_REFINED) {
-	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;
+	RCLASS(klass)->super =
+	    include_class_new(module, RCLASS(klass)->super);
+	klass = RCLASS(klass)->super;
+	module = RCLASS(module)->super;
     }
+    rb_clear_cache();
 }
 
-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), 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) {
-            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 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   #=> [Sub]
- *     Outer.included_modules   #=> [Sub, Mixin]
- */
-
 VALUE
-rb_mod_included_modules(VALUE mod)
+mod_included_modules(mod)
+    VALUE mod;
 {
-    VALUE ary = rb_ary_new();
+    VALUE ary = ary_new();
     VALUE p;
-    VALUE origin = RCLASS_ORIGIN(mod);
 
-    for (p = RCLASS_SUPER(mod); p; p = RCLASS_SUPER(p)) {
-        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);
+    for (p = RCLASS(mod)->super; p; p = RCLASS(p)->super) {
+	if (BUILTIN_TYPE(p) == T_ICLASS) {
+	    ary_push(ary, RBASIC(p)->klass);
 	}
     }
     return ary;
 }
 
-/*
- *  call-seq:
- *     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
- *       include A
- *     end
- *     class C < B
- *     end
- *     B.include?(A)   #=> true
- *     C.include?(A)   #=> true
- *     A.include?(A)   #=> false
- */
-
 VALUE
-rb_mod_include_p(VALUE mod, VALUE mod2)
+mod_ancestors(mod)
+    VALUE mod;
 {
+    VALUE ary = ary_new();
     VALUE p;
 
-    Check_Type(mod2, T_MODULE);
-    for (p = RCLASS_SUPER(mod); p; p = RCLASS_SUPER(p)) {
-        if (BUILTIN_TYPE(p) == T_ICLASS && !FL_TEST(p, RICLASS_IS_ORIGIN)) {
-	    if (RBASIC(p)->klass == mod2) return Qtrue;
-	}
-    }
-    return Qfalse;
-}
-
-/*
- *  call-seq:
- *     mod.ancestors -> array
- *
- *  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        #=> [Enumerable, Mod, Comparable, Math]
- *     Math.ancestors       #=> [Math]
- *     Enumerable.ancestors #=> [Enumerable]
- */
-
-VALUE
-rb_mod_ancestors(VALUE mod)
-{
-    VALUE p, ary = rb_ary_new();
-
-    for (p = mod; p; p = RCLASS_SUPER(p)) {
-        if (p != RCLASS_ORIGIN(p)) continue;
+    for (p = mod; p; p = RCLASS(p)->super) {
+	if (FL_TEST(p, FL_SINGLETON))
+	    continue;
 	if (BUILTIN_TYPE(p) == T_ICLASS) {
-	    rb_ary_push(ary, RBASIC(p)->klass);
+	    ary_push(ary, RBASIC(p)->klass);
 	}
-        else {
-	    rb_ary_push(ary, p);
+	else {
+	    ary_push(ary, p);
 	}
     }
     return ary;
 }
 
-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_i(st_data_t name, st_data_t type, st_data_t ary)
+ins_methods_i(key, body, ary)
+    ID key;
+    NODE *body;
+    VALUE ary;
 {
-    switch ((rb_method_visibility_t)type) {
-      case METHOD_VISI_UNDEF:
-      case METHOD_VISI_PRIVATE:
-	break;
-      default: /* everything but private */
-	ins_methods_push(name, ary);
-	break;
+    if ((body->nd_noex&(NOEX_PRIVATE|NOEX_PROTECTED)) == 0) {
+	VALUE name = str_new2(rb_id2name(key));
+
+	if (!ary_includes(ary, name)) {
+	    if (!body->nd_body) {
+		ary_push(ary, Qnil);
+	    }
+	    ary_push(ary, name);
+	}
+    }
+    else if (body->nd_body && nd_type(body->nd_body) == NODE_ZSUPER) {
+	ary_push(ary, Qnil);
+	ary_push(ary, str_new2(rb_id2name(key)));
     }
     return ST_CONTINUE;
 }
 
 static int
-ins_methods_prot_i(st_data_t name, st_data_t type, st_data_t ary)
+ins_methods_prot_i(key, body, ary)
+    ID key;
+    NODE *body;
+    VALUE ary;
 {
-    if ((rb_method_visibility_t)type == METHOD_VISI_PROTECTED) {
-	ins_methods_push(name, ary);
+    if (!body->nd_body) {
+	ary_push(ary, Qnil);
+	ary_push(ary, str_new2(rb_id2name(key)));
     }
-    return ST_CONTINUE;
-}
+    else if (body->nd_noex & NOEX_PROTECTED) {
+	VALUE name = str_new2(rb_id2name(key));
 
-static int
-ins_methods_priv_i(st_data_t name, st_data_t type, st_data_t ary)
-{
-    if ((rb_method_visibility_t)type == METHOD_VISI_PRIVATE) {
-	ins_methods_push(name, ary);
+	if (!ary_includes(ary, name)) {
+	    ary_push(ary, name);
+	}
+    }
+    else if (nd_type(body->nd_body) == NODE_ZSUPER) {
+	ary_push(ary, Qnil);
+	ary_push(ary, str_new2(rb_id2name(key)));
     }
     return ST_CONTINUE;
 }
 
 static int
-ins_methods_pub_i(st_data_t name, st_data_t type, st_data_t ary)
+ins_methods_priv_i(key, body, ary)
+    ID key;
+    NODE *body;
+    VALUE ary;
 {
-    if ((rb_method_visibility_t)type == METHOD_VISI_PUBLIC) {
-	ins_methods_push(name, ary);
+    if (!body->nd_body) {
+	ary_push(ary, Qnil);
+	ary_push(ary, str_new2(rb_id2name(key)));
     }
-    return ST_CONTINUE;
-}
+    else if (body->nd_noex & NOEX_PRIVATE) {
+	VALUE name = str_new2(rb_id2name(key));
 
-struct method_entry_arg {
-    st_table *list;
-    int recur;
-};
-
-static enum rb_id_table_iterator_result
-method_entry_i(ID key, VALUE value, void *data)
-{
-    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_is_member(arg->list, key)) {
-	if (UNDEFINED_METHOD_ENTRY_P(me)) {
-	    type = METHOD_VISI_UNDEF; /* none */
-	}
-	else {
-	    type = METHOD_ENTRY_VISI(me);
+	if (!ary_includes(ary, name)) {
+	    ary_push(ary, name);
 	}
-	st_add_direct(arg->list, key, (st_data_t)type);
     }
-    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;
+    else if (nd_type(body->nd_body) == NODE_ZSUPER) {
+	ary_push(ary, Qnil);
+	ary_push(ary, str_new2(rb_id2name(key)));
+    }
+    return ST_CONTINUE;
 }
 
 static 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))
+method_list(mod, option, func)
+    VALUE mod;
+    int option;
+    int (*func)();
 {
     VALUE ary;
-    int recur = TRUE, prepended = 0;
-    struct method_entry_arg me_arg;
-
-    if (rb_check_arity(argc, 0, 1)) recur = RTEST(argv[0]);
-
-    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);
-        }
-    }
+    VALUE klass;
+    VALUE *p, *q, *pend;
 
-    if (!recur && RCLASS_ORIGIN(mod) != mod) {
-	mod = RCLASS_ORIGIN(mod);
-	prepended = 1;
+    ary = ary_new();
+    for (klass = mod; klass; klass = RCLASS(klass)->super) {
+	st_foreach(RCLASS(klass)->m_tbl, func, ary);
+	if (!option) break;
     }
-
-    for (; mod; mod = RCLASS_SUPER(mod)) {
-        add_instance_method_list(mod, &me_arg);
-	if (BUILTIN_TYPE(mod) == T_ICLASS && !prepended) continue;
-	if (!recur) break;
+    p = q = RARRAY(ary)->ptr; pend = p + RARRAY(ary)->len;
+    while (p < pend) {
+	if (*p == Qnil) {
+	    p+=2;
+	    continue;
+	}
+	*q++ = *p++;
     }
-    ary = rb_ary_new2(me_arg.list->num_entries);
-    st_foreach(me_arg.list, func, ary);
-    st_free_table(me_arg.list);
-
+    RARRAY(ary)->len = q - RARRAY(ary)->ptr;
     return ary;
 }
 
-/*
- *  call-seq:
- *     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(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, const VALUE *argv, VALUE mod)
+class_instance_methods(argc, argv, mod)
+    int argc;
+    VALUE *argv;
+    VALUE mod;
 {
-    return class_instance_method_list(argc, argv, mod, 0, ins_methods_i);
-}
+    VALUE option;
 
-/*
- *  call-seq:
- *     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 <code>false</code>, the
- *  methods of any ancestors are not included.
- */
-
-VALUE
-rb_class_protected_instance_methods(int argc, const VALUE *argv, VALUE mod)
-{
-    return class_instance_method_list(argc, argv, mod, 0, ins_methods_prot_i);
+    rb_scan_args(argc, argv, "01", &option);
+    return method_list(mod, RTEST(option), ins_methods_i);
 }
 
-/*
- *  call-seq:
- *     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 <code>false</code>, the
- *  methods of any ancestors are not included.
- *
- *     module Mod
- *       def method1()  end
- *       private :method1
- *       def method2()  end
- *     end
- *     Mod.instance_methods           #=> [:method2]
- *     Mod.private_instance_methods   #=> [:method1]
- */
-
 VALUE
-rb_class_private_instance_methods(int argc, const VALUE *argv, VALUE mod)
+class_protected_instance_methods(argc, argv, mod)
+    int argc;
+    VALUE *argv;
+    VALUE mod;
 {
-    return class_instance_method_list(argc, argv, mod, 0, ins_methods_priv_i);
-}
-
-/*
- *  call-seq:
- *     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 <code>false</code>, the methods of
- *  any ancestors are not included.
- */
+    VALUE option;
 
-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);
+    rb_scan_args(argc, argv, "01", &option);
+    return method_list(mod, RTEST(option), ins_methods_prot_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)
+class_private_instance_methods(argc, argv, mod)
+    int argc;
+    VALUE *argv;
+    VALUE mod;
 {
-    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 option;
 
-VALUE
-rb_obj_protected_methods(int argc, const VALUE *argv, VALUE obj)
-{
-    return class_instance_method_list(argc, argv, CLASS_OF(obj), 1, ins_methods_prot_i);
+    rb_scan_args(argc, argv, "01", &option);
+    return method_list(mod, RTEST(option), ins_methods_priv_i);
 }
 
-/*
- *  call-seq:
- *     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)
+obj_singleton_methods(obj)
+    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 ary;
+    VALUE klass;
+    VALUE *p, *q, *pend;
 
-VALUE
-rb_obj_singleton_methods(int argc, const VALUE *argv, VALUE obj)
-{
-    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);
-    }
+    ary = ary_new();
     klass = CLASS_OF(obj);
-    origin = RCLASS_ORIGIN(klass);
-    me_arg.list = st_init_numtable();
-    me_arg.recur = recur;
-    if (klass && FL_TEST(klass, FL_SINGLETON)) {
-	if ((mtbl = RCLASS_M_TBL(origin)) != 0) rb_id_table_foreach(mtbl, method_entry_i, &me_arg);
-	klass = RCLASS_SUPER(klass);
+    while (klass && FL_TEST(klass, FL_SINGLETON)) {
+	st_foreach(RCLASS(klass)->m_tbl, ins_methods_i, ary);
+	klass = RCLASS(klass)->super;
     }
-    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);
+    p = q = RARRAY(ary)->ptr; pend = p + RARRAY(ary)->len;
+    while (p < pend) {
+	if (*p == Qnil) {
+	    p+=2;
+	    continue;
 	}
+	*q++ = *p++;
     }
-    ary = rb_ary_new2(me_arg.list->num_entries);
-    st_foreach(me_arg.list, ins_methods_i, ary);
-    st_free_table(me_arg.list);
+    RARRAY(ary)->len = q - RARRAY(ary)->ptr;
 
     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 mid, VALUE (*func)(ANYARGS), int argc)
+rb_define_method_id(klass, name, func, argc)
+    VALUE klass;
+    ID name;
+    VALUE (*func)();
+    int argc;
 {
-    rb_add_method_cfunc(klass, mid, func, argc, METHOD_VISI_PUBLIC);
+    rb_add_method(klass, name, NEW_CFUNC(func,argc), NOEX_PUBLIC|NOEX_CFUNC);
 }
 
-#ifdef rb_define_method
-#undef rb_define_method
-#endif
 void
-rb_define_method(VALUE klass, const char *name, VALUE (*func)(ANYARGS), int argc)
+rb_define_method(klass, name, func, argc)
+    VALUE klass;
+    char *name;
+    VALUE (*func)();
+    int argc;
 {
-    rb_add_method_cfunc(klass, rb_intern(name), func, argc, METHOD_VISI_PUBLIC);
-}
+    ID id = rb_intern(name);
 
-#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_cfunc(klass, rb_intern(name), func, argc, METHOD_VISI_PROTECTED);
+    rb_add_method(klass, id, NEW_CFUNC(func, argc), 
+		  ((name[0] == 'i' && id == rb_intern("initialize"))?
+		   NOEX_PRIVATE:NOEX_PUBLIC)|NOEX_CFUNC);
 }
 
-#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_define_protected_method(klass, name, func, argc)
+    VALUE klass;
+    char *name;
+    VALUE (*func)();
+    int argc;
 {
-    rb_add_method_cfunc(klass, rb_intern(name), func, argc, METHOD_VISI_PRIVATE);
+    rb_add_method(klass, rb_intern(name), NEW_CFUNC(func, argc),
+		  NOEX_PROTECTED|NOEX_CFUNC);
 }
 
 void
-rb_undef_method(VALUE klass, const char *name)
-{
-    rb_add_method(klass, rb_intern(name), VM_METHOD_TYPE_UNDEF, 0, METHOD_VISI_UNDEF);
-}
-
-static enum rb_id_table_iterator_result
-undef_method_i(ID name, VALUE value, void *data)
+rb_define_private_method(klass, name, func, argc)
+    VALUE klass;
+    char *name;
+    VALUE (*func)();
+    int argc;
 {
-    VALUE klass = (VALUE)data;
-    rb_add_method(klass, name, VM_METHOD_TYPE_UNDEF, 0, METHOD_VISI_UNDEF);
-    return ID_TABLE_CONTINUE;
+    rb_add_method(klass, rb_intern(name), NEW_CFUNC(func, argc),
+		  NOEX_PRIVATE|NOEX_CFUNC);
 }
 
 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_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)
-{
+rb_undef_method(klass, name)
     VALUE klass;
-
-    switch (TYPE(obj)) {
-      case T_FIXNUM:
-      case T_BIGNUM:
-      case T_FLOAT:
-      case T_SYMBOL:
-	rb_raise(rb_eTypeError, "can't define singleton");
-
-      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;
-
-      case T_STRING:
-        if (FL_TEST_RAW(obj, RSTRING_FSTR)) {
-            rb_raise(rb_eTypeError, "can't define singleton");
-        }
-    }
-
-    klass = RBASIC(obj)->klass;
-    if (!(FL_TEST(klass, FL_SINGLETON) &&
-	  rb_ivar_get(klass, id_attached) == obj)) {
-	rb_serial_t serial = RCLASS_SERIAL(klass);
-	klass = rb_make_metaclass(obj, klass);
-	RCLASS_SERIAL(klass) = serial;
-    }
-
-    RB_FL_SET_RAW(klass, RB_OBJ_FROZEN_RAW(obj));
-
-    return klass;
-}
-
-void
-rb_freeze_singleton_class(VALUE x)
+    char *name;
 {
-    /* 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);
-	}
-    }
+    rb_add_method(klass, rb_intern(name), 0, NOEX_UNDEF);
 }
 
-/*!
- * 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)
+rb_singleton_class(obj)
+    VALUE obj;
 {
-    VALUE klass;
-
-    if (SPECIAL_CONST_P(obj)) {
-	return rb_special_singleton_class(obj);
+    if (rb_special_const_p(obj)) {
+	TypeError("cannot define singleton");
     }
-    klass = RBASIC(obj)->klass;
-    if (!FL_TEST(klass, FL_SINGLETON)) return Qnil;
-    if (rb_ivar_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 a 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;
+    if (FL_TEST(RBASIC(obj)->klass, FL_SINGLETON)) {
+	return RBASIC(obj)->klass;
+    }
+    RBASIC(obj)->klass = singleton_class_new(RBASIC(obj)->klass);
+    singleton_class_attached(RBASIC(obj)->klass, obj);
+    return RBASIC(obj)->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_singleton_method(obj, name, func, argc)
+    VALUE obj;
+    char *name;
+    VALUE (*func)();
+    int argc;
 {
-    rb_define_method(singleton_class_of(obj), name, func, argc);
+    rb_define_method(rb_singleton_class(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)
+rb_define_module_function(module, name, func, argc)
+    VALUE module;
+    char *name;
+    VALUE (*func)();
+    int argc;
 {
     rb_define_private_method(module, name, func, argc);
     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.
- */
+extern VALUE mKernel;
+
 void
-rb_define_global_function(const char *name, VALUE (*func)(ANYARGS), int argc)
+rb_define_global_function(name, func, argc)
+    char *name;
+    VALUE (*func)();
+    int argc;
 {
-    rb_define_module_function(rb_mKernel, name, func, argc);
+    rb_define_private_method(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_define_alias(klass, name1, name2)
+    VALUE klass;
+    char *name1, *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_define_attr(klass, name, read, write)
+    VALUE klass;
+    char *name;
+    int read, write;
 {
     rb_attr(klass, rb_intern(name), read, write, FALSE);
 }
 
-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, ", ");
-	}
-    }
+#include <varargs.h>
+#include <ctype.h>
 
-    return rb_exc_new_str(rb_eArgError, error_message);
-}
+int
+rb_scan_args(argc, argv, fmt, va_alist)
+    int argc;
+    VALUE *argv;
+    char *fmt;
+    va_dcl
+{
+    int n, i;
+    char *p = fmt;
+    VALUE *var;
+    va_list vargs;
 
-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));
-}
+    va_start(vargs);
 
-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);
+    if (*p == '*') {
+	var = va_arg(vargs, VALUE*);
+	*var = ary_new4(argc, argv);
+	return argc;
     }
-    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;
+    if (isdigit(*p)) {
+	n = *p - '0';
+	if (n > argc)
+	    ArgError("Wrong # of arguments (%d for %d)", argc, n);
+	for (i=0; i<n; i++) {
+	    var = va_arg(vargs, VALUE*);
+	    *var = argv[i];
+	}
+	p++;
     }
-    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));
+    else {
+	goto error;
     }
-    return parthash[0];
-}
-
-int
-rb_get_kwargs(VALUE keyword_hash, const ID *table, int required, int optional, VALUE *values)
-{
-    int i = 0, j;
-    int rest = 0;
-    VALUE missing = Qnil;
-    st_data_t key;
-
-#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 (NIL_P(keyword_hash)) keyword_hash = 0;
 
-    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 (isdigit(*p)) {
+	n = i + *p - '0';
+	for (; i<n; i++) {
+	    var = va_arg(vargs, VALUE*);
+	    if (argc > i) {
+		*var = argv[i];
 	    }
-	    if (NIL_P(missing)) missing = rb_ary_tmp_new(1);
-	    rb_ary_push(missing, keyword);
-	}
-	if (!NIL_P(missing)) {
-	    rb_keyword_error("missing", missing);
-	}
-    }
-    j = i;
-    if (optional && keyword_hash) {
-	for (i = 0; i < optional; i++) {
-            if (extract_kwarg(ID2SYM(table[required+i]), values[required+i])) {
-		j++;
+	    else {
+		*var = Qnil;
 	    }
 	}
-    }
-    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)) {
-        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;
-    }
 
-    /* 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;
+    if(*p == '*') {
+	var = va_arg(vargs, VALUE*);
+	if (argc > i) {
+	    *var = ary_new4(argc-i, argv+i);
 	}
 	else {
-	    if (var) *var = rb_ary_new();
+	    *var = ary_new();
 	}
     }
-    /* 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;
+    else if (*p == '\0') {
+	if (argc > i) {
+	    ArgError("Wrong # of arguments(%d for %d)", argc, i);
 	}
     }
-
-    if (argi == argc) {
-        return argc;
-    }
-
-  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;
+    else {
+	goto error;
     }
 
-    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);
-}
+    return argc;
 
-int
-rb_class_has_methods(VALUE c)
-{
-    return rb_id_table_size(RCLASS_M_TBL(c)) == 0 ? FALSE : TRUE;
+  error:
+    Fatal("bad scan arg format: %s", fmt);
+    return 0;
 }
-
-/*!
- * \}
- */
diff --git a/common.mk b/common.mk
deleted file mode 100644
index cf4c6398ab..0000000000
--- a/common.mk
+++ /dev/null
@@ -1,16269 +0,0 @@
-# -*- mode: makefile-gmake; indent-tabs-mode: t -*-
-
-bin: $(PROGRAM) $(WPROGRAM)
-lib: $(LIBRUBY)
-dll: $(LIBRUBY_SO)
-
-.SUFFIXES: .rbinc .rb .inc .h .c .y .i .$(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       = $(PATH_SEPARATOR)
-RUBYOPT       = -
-RUN_OPTS      = --disable-gems
-
-# GITPULLOPTIONS = --no-tags
-
-INCFLAGS = -I. -I$(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
-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
-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
-
-INITOBJS      = dmyext.$(OBJEXT) dmyenc.$(OBJEXT)
-NORMALMAINOBJ = main.$(OBJEXT)
-MAINOBJ       = $(NORMALMAINOBJ)
-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) \
-		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.$(OBJEXT) \
-		re.$(OBJEXT) \
-		regcomp.$(OBJEXT) \
-		regenc.$(OBJEXT) \
-		regerror.$(OBJEXT) \
-		regexec.$(OBJEXT) \
-		regparse.$(OBJEXT) \
-		regsyntax.$(OBJEXT) \
-		ruby.$(OBJEXT) \
-		scheduler.$(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) \
-		vm.$(OBJEXT) \
-		vm_backtrace.$(OBJEXT) \
-		vm_dump.$(OBJEXT) \
-		vm_sync.$(OBJEXT) \
-		vm_trace.$(OBJEXT) \
-		$(COROUTINE_OBJ) \
-		$(DTRACE_OBJ) \
-		$(BUILTIN_ENCOBJS) \
-		$(BUILTIN_TRANSOBJS) \
-		$(MISSING)
-
-EXPORTOBJS    = $(DLNOBJ) \
-		localeinit.$(OBJEXT) \
-		loadpath.$(OBJEXT) \
-		$(COMMONOBJS)
-
-OBJS          = $(EXPORTOBJS) builtin.$(OBJEXT)
-ALLOBJS       = $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(INITOBJS)
-
-GOLFOBJS      = goruby.$(OBJEXT) golf_prelude.$(OBJEXT)
-
-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 $(EXTSTATIC) \
-		--make-flags="V=$(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 $(INSTALLED_LIST) \
-		--mantype="$(MANTYPE)"
-INSTALL_PROG_MODE = 0755
-INSTALL_DATA_MODE = 0644
-
-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
-
-COMPILE_PRELUDE = $(tooldir)/generic_erb.rb $(srcdir)/template/prelude.c.tmpl
-
-SHOWFLAGS = showflags
-
-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)"
-
-
-all: $(SHOWFLAGS) main docs
-
-main: $(SHOWFLAGS) exts $(ENCSTATIC:static=lib)encs programs
-	@$(NULLCMD)
-
-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 $(ALLOBJS) $(ARCHFILE)
-
-objs: $(ALLOBJS)
-
-GORUBY = go$(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):
-	@$(NULLCMD) > $@
-
-$(STATIC_RUBY)$(EXEEXT): $(MAINOBJ) $(DLDOBJS) $(EXTOBJS) $(LIBRUBY_A)
-	$(Q)$(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 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: $(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: 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: 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) 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: $(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) 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: 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: 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) 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-$(INSTALLDOC)
-what-where-all: no-install-all
-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)
-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
-post-no-install-local:: post-no-install-bin post-no-install-lib post-no-install-man
-
-what-where-ext: no-install-ext
-no-install-ext: pre-no-install-ext dont-install-ext post-no-install-ext
-pre-no-install-ext:: pre-no-install-ext-arch pre-no-install-ext-comm
-dont-install-ext: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=ext
-post-no-install-ext:: post-no-install-ext-arch post-no-install-ext-comm
-
-what-where-arch: no-install-arch
-no-install-arch: pre-no-install-arch dont-install-arch post-no-install-arch
-pre-no-install-arch:: pre-no-install-bin pre-no-install-ext-arch
-dont-install-arch: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=bin --install=ext-arch
-post-no-install-arch:: post-no-install-lib post-no-install-man post-no-install-ext-arch
-
-what-where-comm: no-install-comm
-no-install-comm: pre-no-install-comm dont-install-comm post-no-install-comm
-pre-no-install-comm:: pre-no-install-lib pre-no-install-ext-comm pre-no-install-man
-dont-install-comm: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=lib --install=ext-comm --install=man
-post-no-install-comm:: post-no-install-lib post-no-install-ext-comm post-no-install-man
-
-what-where-bin: no-install-bin
-no-install-bin: pre-no-install-bin dont-install-bin post-no-install-bin
-pre-no-install-bin:: install-prereq
-dont-install-bin: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=bin
-post-no-install-bin::
-	@$(NULLCMD)
-
-what-where-lib: no-install-lib
-no-install-lib: pre-no-install-lib dont-install-lib post-no-install-lib
-pre-no-install-lib:: install-prereq
-dont-install-lib: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=lib
-post-no-install-lib::
-	@$(NULLCMD)
-
-what-where-ext-comm: no-install-ext-comm
-no-install-ext-comm: pre-no-install-ext-comm dont-install-ext-comm post-no-install-ext-comm
-pre-no-install-ext-comm:: install-prereq
-dont-install-ext-comm: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=ext-comm
-post-no-install-ext-comm::
-	@$(NULLCMD)
-
-what-where-ext-arch: no-install-ext-arch
-no-install-ext-arch: pre-no-install-ext-arch dont-install-ext-arch post-no-install-ext-arch
-pre-no-install-ext-arch:: install-prereq
-dont-install-ext-arch: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=ext-arch
-post-no-install-ext-arch::
-	@$(NULLCMD)
-
-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)" $(INSTRUBY_ARGS) --install=man
-post-no-install-man::
-	@$(NULLCMD)
-
-install-doc: rdoc pre-install-doc do-install-doc post-install-doc
-pre-install-doc:: install-prereq
-do-install-doc: $(PROGRAM) pre-install-doc
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=rdoc $(INSTALL_DOC_OPTS)
-post-install-doc::
-	@$(NULLCMD)
-
-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
-	$(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 $(INSTALL_DOC_OPTS)
-post-no-install-doc::
-	@$(NULLCMD)
-
-CLEAR_INSTALLED_LIST = clear-installed-list
-
-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
-	$(Q)$(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
-	$(Q)$(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
-distclean-rdoc: clean-rdoc
-distclean-html: clean-html
-distclean-capi: clean-capi
-distclean-docs: clean-docs
-distclean-extout: clean-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 realclean-srcs-local
-
-clean-srcs:: clean-srcs-local clean-srcs-ext
-realclean-srcs:: realclean-srcs-local realclean-srcs-ext
-
-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
-
-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)
-
-clean-srcs-ext::
-realclean-srcs-ext:: clean-srcs-ext
-
-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
-
-ext/clean.mk ext/distclean.mk ext/realclean.mk::
-ext/clean:: ext/clean.mk
-ext/distclean:: ext/distclean.mk
-ext/realclean:: ext/realclean.mk
-
-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)
-
-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)
-	$(Q) $(MAKEDIRS) "$(EXTCONFDIR)"
-	$(RUNRUBY) -C "$(EXTCONFDIR)" $(EXTCONF) $(EXTCONFARGS)
-
-$(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=$(RUBY_SO_NAME) \
-		-unicode_version=$(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 $(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
-libencs: libenc libtrans
-encs enc trans libencs libenc libtrans: $(SHOWFLAGS) $(ENC_MK) $(LIBRUBY) $(PREP) PHONY
-	$(ECHO) making $@
-	$(Q) $(MAKE) $(MAKE_ENC) $@
-
-
-libenc enc: {$(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)/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 $(tooldir)/ytab.sed {$(VPATH)}id.h
-{$(VPATH)}parse.h: {$(VPATH)}parse.c
-
-{$(srcdir)}.y.c:
-	$(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): {$(VPATH)}crypt.c {$(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): {$(VPATH)}strstr.c
-nt.$(OBJEXT): {$(VPATH)}nt.c
-
-.coroutine_obj $(COROUTINE_OBJ): \
-	{$(VPATH)}$(COROUTINE_SRC) \
-	$(COROUTINE_H:/Context.h=/.time)
-$(COROUTINE_H:/Context.h=/.time):
-	$(Q) $(MAKEDIRS) $(@D)
-	@$(NULLCMD) > $@
-
-###
-
-# dependencies for generated C sources.
-parse.$(OBJEXT): {$(VPATH)}parse.c
-miniprelude.$(OBJEXT): {$(VPATH)}miniprelude.c
-
-# dependencies for optional sources.
-compile.$(OBJEXT): {$(VPATH)}opt_sc.inc {$(VPATH)}optunifs.inc
-
-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) $(PLATFORM_D)
-
-$(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)
-
-verconf.h: $(srcdir)/template/verconf.h.tmpl $(tooldir)/generic_erb.rb
-	$(ECHO) creating $@
-	$(Q) $(BOOTSTRAPRUBY) "$(tooldir)/generic_erb.rb" -o $@ $(srcdir)/template/verconf.h.tmpl
-
-ruby-glommed.$(OBJEXT): $(OBJS)
-
-$(OBJS):  {$(VPATH)}config.h {$(VPATH)}missing.h
-
-INSNS2VMOPT = --srcdir="$(srcdir)"
-
-srcs_vpath = {$(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)
-	$(ECHO) making srcs under enc
-	$(Q) $(MAKE) $(MAKE_ENC) srcs
-
-all-incs: incs {$(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)
-
-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
-
-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
-
-node_name.inc: $(tooldir)/node_name.rb $(srcdir)/node.h
-	$(ECHO) generating $@
-	$(Q) $(BASERUBY) -n $(tooldir)/node_name.rb < $(srcdir)/node.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 = $(ENABLE_DEBUG_ENV:yes=-DRUBY_DEBUG_ENV=1)
-
-$(MAINOBJ): $(srcdir)/$(MAINSRC)
-	$(ECHO) compiling $(srcdir)/$(MAINSRC)
-	$(Q) $(CC) $(MAINCPPFLAGS) $(CFLAGS) $(XCFLAGS) $(CPPFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$(srcdir)/$(MAINSRC)
-
-{$(VPATH)}probes.dmyh: {$(srcdir)}probes.d $(tooldir)/gen_dummy_probes.rb
-
-probes.dmyh:
-	$(BASERUBY) $(tooldir)/gen_dummy_probes.rb $(srcdir)/probes.d > $@
-
-probes.h: {$(VPATH)}probes.$(DTRACE_EXT)
-
-prereq: incs srcs preludes PHONY
-
-preludes: {$(VPATH)}miniprelude.c
-preludes: {$(srcdir)}golf_prelude.c
-
-{$(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: fake miniruby$(EXEEXT) PHONY
-	$(BTESTRUBY) $(TESTRUN_SCRIPT) $(RUNOPT)
-
-runruby: $(PROGRAM) PHONY
-	$(RUNRUBY) $(TESTRUN_SCRIPT)
-
-parse: fake miniruby$(EXEEXT) PHONY
-	$(BTESTRUBY) --dump=parsetree_with_comment,insns $(TESTRUN_SCRIPT)
-
-bisect: PHONY
-	$(tooldir)/bisect.sh miniruby $(srcdir)
-
-bisect-ruby: PHONY
-	$(tooldir)/bisect.sh ruby $(srcdir)
-
-COMPARE_RUBY = $(BASERUBY)
-BENCH_RUBY = $(RUNRUBY)
-BENCH_OPTS = --output=markdown --output-compare
-ITEM =
-ARGS = $$(find $(srcdir)/benchmark -maxdepth 1 -name '$(ITEM)' -o -name '*$(ITEM)*.yml' -o -name '*$(ITEM)*.rb' | sort)
-OPTS =
-
-# See benchmark/README.md for details.
-benchmark: miniruby$(EXEEXT) update-benchmark-driver PHONY
-	$(BASERUBY) -rrubygems -I$(srcdir)/benchmark/lib $(srcdir)/benchmark/benchmark-driver/exe/benchmark-driver \
-	            --executables="compare-ruby::$(COMPARE_RUBY) -I$(EXTOUT)/common --disable-gem" \
-	            --executables="built-ruby::$(BENCH_RUBY) --disable-gem" \
-	            $(BENCH_OPTS) $(ARGS) $(OPTS)
-
-run.gdb:
-	echo set breakpoint pending on         > run.gdb
-	echo b rb_assert_failure              >> run.gdb
-	echo b rb_bug                         >> run.gdb
-	echo b ruby_debug_breakpoint          >> run.gdb
-	echo '# handle SIGINT nostop'         >> run.gdb
-	echo '# handle SIGPIPE nostop'        >> run.gdb
-	echo '# b rb_longjmp'                 >> run.gdb
-	echo source $(srcdir)/breakpoints.gdb >> run.gdb
-	echo source $(srcdir)/.gdbinit        >> run.gdb
-	echo 'set $$_exitcode = -999'         >> run.gdb
-	echo run                              >> run.gdb
-	echo 'if $$_exitcode != -999'         >> run.gdb
-	echo '  quit'                         >> run.gdb
-	echo end                              >> run.gdb
-
-
-gdb: miniruby$(EXEEXT) run.gdb PHONY
-	gdb -x run.gdb --quiet --args $(MINIRUBY) $(TESTRUN_SCRIPT)
-
-gdb-ruby: $(PROGRAM) run.gdb PHONY
-	$(Q) $(RUNRUBY_COMMAND) $(RUNRUBY_DEBUGGER) -- $(TESTRUN_SCRIPT)
-
-LLDB_INIT = command script import -r $(srcdir)/misc/lldb_cruby.py
-
-lldb: miniruby$(EXEEXT) PHONY
-	lldb -o '$(LLDB_INIT)' miniruby$(EXEEXT) -- $(TESTRUN_SCRIPT)
-
-lldb-ruby: $(PROGRAM) PHONY
-	lldb $(enable_shared:yes=-o 'target modules add ${LIBRUBY_SO}') -o '$(LLDB_INIT)' $(PROGRAM) -- $(TESTRUN_SCRIPT)
-
-DISTPKGS = gzip,zip,all
-dist:
-	$(BASERUBY) $(tooldir)/make-snapshot \
-	-srcdir=$(srcdir) -packages=$(DISTPKGS) \
-	-unicode-version=$(UNICODE_VERSION) \
-	tmp $(RELNAME)
-
-up:: update-remote
-
-up::
-	-$(Q)$(MAKE) $(mflags) Q=$(Q) REVISION_FORCE=PHONY after-update
-
-yes::
-no::
-
-after-update:: $(REVISION_H)
-after-update:: extract-extlibs
-after-update:: extract-gems
-
-update-remote:: update-src update-download
-update-download:: $(ALWAYS_UPDATE_UNICODE:yes=update-unicode)
-update-download:: update-gems
-update-download:: download-extlibs
-
-update-mspec:
-update-rubyspec:
-
-update-config_files: PHONY
-	$(Q) $(BASERUBY) -C "$(srcdir)" tool/downloader.rb -d tool --cache-dir=$(CACHE_DIR) -e gnu \
-	    config.guess config.sub
-
-refresh-gems: update-bundled_gems prepare-gems
-prepare-gems: update-gems extract-gems
-
-update-gems$(gnumake:yes=-nongnumake): PHONY
-	$(ECHO) Downloading bundled gem files...
-	$(Q) $(BASERUBY) -C "$(srcdir)" \
-	    -I./tool -rdownloader -answ \
-	    -e 'gem, ver = *$$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 = *$$F' \
-	    -e 'next if !ver or /^#/=~gem' \
-	    -e 'g = "#{gem}-#{ver}"' \
-	    -e 'File.directory?("#{d}/#{g}") or Gem.unpack("gems/#{g}.gem", d)' \
-	    gems/bundled_gems
-
-update-bundled_gems: PHONY
-	$(Q) $(RUNRUBY) -rrubygems \
-	    -pla \
-	    -e 'unless /^[^#]/!~(gem=$$F[0])' \
-	    -e '(gem,src), = Gem::SpecFetcher.fetcher.detect(:latest) {'"|s|" \
-	    -e   's.platform=="ruby"&&s.name==gem' \
-	    -e '}' \
-	    -e 'gem = src.fetch_spec(gem)' \
-	    -e 'uri = gem.metadata["source_code_uri"]||gem.homepage' \
-	    -e 'uri = uri.sub(%r[\Ahttps://github\.com/[^/]+/[^/]+\K/tree/.*], "")' \
-	    -e '$$_ = [gem.name, gem.version, uri].join(" ")' \
-	    -e 'end' \
-	     "$(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"
-
-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 =
-
-test-bundled-gems-run: $(PREPARE_BUNDLED_GEMS)
-	$(Q) $(XRUBY) $(tooldir)/test-bundled-gems.rb
-
-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
-	$(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" \
-	$(MESSAGE_END)
-
-# AUTOGENERATED DEPENDENCIES START
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-addr2line.$(OBJEXT): {$(VPATH)}internal/attr/deprecated.h
-addr2line.$(OBJEXT): {$(VPATH)}internal/attr/error.h
-addr2line.$(OBJEXT): {$(VPATH)}internal/attr/forceinline.h
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-vm_trace.$(OBJEXT): {$(VPATH)}internal/arithmetic/short.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/arithmetic/size_t.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/arithmetic/st_data_t.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/arithmetic/uid_t.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/assume.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/alloc_size.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/artificial.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/cold.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/const.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/constexpr.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/deprecated.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/diagnose_if.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/enum_extensibility.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/error.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/flag_enum.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/forceinline.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/format.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/maybe_unused.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/noalias.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/nodiscard.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/noexcept.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/noinline.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/nonnull.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/noreturn.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/pure.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/restrict.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/returns_nonnull.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/warning.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/attr/weakref.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/cast.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_is.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_is/apple.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_is/clang.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_is/gcc.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_is/intel.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_is/msvc.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_is/sunpro.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/compiler_since.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/config.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/constant_p.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rarray.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rbasic.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rbignum.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rclass.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rdata.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rfile.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rhash.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/robject.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rregexp.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rstring.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rstruct.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/core/rtypeddata.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/ctype.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/dllexport.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/dosish.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/error.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/eval.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/event.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/fl_type.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/gc.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/glob.h
-vm_trace.$(OBJEXT): {$(VPATH)}internal/globals.h
-vm_trace.$(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): {$(VPATH)}ruby_assert.h
-vm_trace.$(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 6e64e3d9ef..ce85198873 100644
--- a/compar.c
+++ b/compar.c
@@ -1,308 +1,100 @@
-/**********************************************************************
+/************************************************
 
   compar.c -
 
   $Author$
+  $Date$
   created at: Thu Aug 26 14:39:48 JST 1993
 
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
+  Copyright (C) 1993-1998 Yukihiro Matsumoto
 
-**********************************************************************/
+************************************************/
 
-#include "id.h"
-#include "internal.h"
-#include "internal/compar.h"
-#include "internal/error.h"
-#include "internal/vm.h"
-#include "ruby/ruby.h"
+#include "ruby.h"
 
-VALUE rb_mComparable;
+VALUE mComparable;
 
-static VALUE
-rb_cmp(VALUE x, VALUE y)
-{
-    return rb_funcallv(x, idCmp, 1, &y);
-}
-
-void
-rb_cmperr(VALUE x, VALUE y)
-{
-    VALUE classname;
-
-    if (SPECIAL_CONST_P(y) || BUILTIN_TYPE(y) == T_FLOAT) {
-	classname = rb_inspect(y);
-    }
-    else {
-	classname = rb_obj_class(y);
-    }
-    rb_raise(rb_eArgError, "comparison of %"PRIsVALUE" with %"PRIsVALUE" failed",
-	     rb_obj_class(x), classname);
-}
+static ID cmp;
 
 static VALUE
-invcmp_recursive(VALUE x, VALUE y, int recursive)
-{
-    if (recursive) return Qnil;
-    return rb_cmp(y, x);
-}
-
-VALUE
-rb_invcmp(VALUE x, VALUE y)
+cmp_eq(x, y)
+    VALUE x, 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);
-    }
-}
+    VALUE c = rb_funcall(x, cmp, 1, y);
+    int t = NUM2INT(c);
 
-static VALUE
-cmp_eq_recursive(VALUE arg1, VALUE arg2, int recursive)
-{
-    if (recursive) return Qnil;
-    return rb_cmp(arg1, arg2);
+    if (t == 0) return TRUE;
+    return FALSE;
 }
 
-/*
- *  call-seq:
- *     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.
- */
-
 static VALUE
-cmp_equal(VALUE x, VALUE y)
+cmp_gt(x, y)
+    VALUE x, y;
 {
-    VALUE c;
-    if (x == y) return Qtrue;
-
-    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;
-}
+    VALUE c = rb_funcall(x, cmp, 1, y);
+    int t = NUM2INT(c);
 
-static int
-cmpint(VALUE x, VALUE y)
-{
-    return rb_cmpint(rb_cmp(x, y), x, y);
+    if (t > 0) return TRUE;
+    return FALSE;
 }
 
-/*
- *  call-seq:
- *     obj > other    -> true or false
- *
- *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns a value greater than 0.
- */
-
 static VALUE
-cmp_gt(VALUE x, VALUE y)
+cmp_ge(x, y)
+    VALUE x, y;
 {
-    if (cmpint(x, y) > 0) return Qtrue;
-    return Qfalse;
-}
+    VALUE c = rb_funcall(x, cmp, 1, y);
+    int t = NUM2INT(c);
 
-/*
- *  call-seq:
- *     obj >= other    -> true or false
- *
- *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns a value greater than or equal to 0.
- */
-
-static VALUE
-cmp_ge(VALUE x, VALUE y)
-{
-    if (cmpint(x, y) >= 0) return Qtrue;
-    return Qfalse;
+    if (t >= 0) return TRUE;
+    return FALSE;
 }
 
-/*
- *  call-seq:
- *     obj < other    -> true or false
- *
- *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns a value less than 0.
- */
-
 static VALUE
-cmp_lt(VALUE x, VALUE y)
+cmp_lt(x, y)
+    VALUE x, y;
 {
-    if (cmpint(x, y) < 0) return Qtrue;
-    return Qfalse;
-}
-
-/*
- *  call-seq:
- *     obj <= other    -> true or false
- *
- *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns a value less than or equal to 0.
- */
+    VALUE c = rb_funcall(x, cmp, 1, y);
+    int t = NUM2INT(c);
 
-static VALUE
-cmp_le(VALUE x, VALUE y)
-{
-    if (cmpint(x, y) <= 0) return Qtrue;
-    return Qfalse;
+    if (t < 0) return TRUE;
+    return FALSE;
 }
 
-/*
- *  call-seq:
- *     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)
+cmp_le(x, y)
+    VALUE x, y;
 {
-    if (cmpint(x, min) < 0) return Qfalse;
-    if (cmpint(x, max) > 0) return Qfalse;
-    return Qtrue;
-}
+    VALUE c = rb_funcall(x, cmp, 1, y);
+    int t = NUM2INT(c);
 
-/*
- *  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
- */
+    if (t <= 0) return TRUE;
+    return FALSE;
+}
 
 static VALUE
-cmp_clamp(int argc, VALUE *argv, VALUE x)
+cmp_between(x, min, max)
+    VALUE x, min, max;
 {
-    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;
+    VALUE c = rb_funcall(x, cmp, 1, min);
+    int t = NUM2INT(c);
+    if (t < 0) return FALSE;
+
+    c = rb_funcall(x, cmp, 1, max);
+    t = NUM2INT(c);
+    if (t > 0) return FALSE;
+    return TRUE;
 }
 
-/*
- *  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 <=>(other)
- *         str.size <=> other.str.size
- *       end
- *       def initialize(str)
- *         @str = str
- *       end
- *       def inspect
- *         @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)
+Init_Comparable()
 {
-#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);
-    rb_define_method(rb_mComparable, ">=", cmp_ge, 1);
-    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);
-    rb_define_method(rb_mComparable, "clamp", cmp_clamp, -1);
+    mComparable = rb_define_module("Comparable");
+    rb_define_method(mComparable, "==", cmp_eq, 1);
+    rb_define_method(mComparable, ">", cmp_gt, 1);
+    rb_define_method(mComparable, ">=", cmp_ge, 1);
+    rb_define_method(mComparable, "<", cmp_lt, 1);
+    rb_define_method(mComparable, "<=", cmp_le, 1);
+    rb_define_method(mComparable, "between?", cmp_between, 2);
+
+    cmp = rb_intern("<=>");
 }
diff --git a/compile.c b/compile.c
deleted file mode 100644
index 797a170f5f..0000000000
--- a/compile.c
+++ /dev/null
@@ -1,12035 +0,0 @@
-/**********************************************************************
-
-  compile.c - ruby node tree -> VM instruction sequence
-
-  $Author$
-  created at: 04/01/01 03:42:15 JST
-
-  Copyright (C) 2004-2007 Koichi Sasada
-
-**********************************************************************/
-
-#include "ruby/internal/config.h"
-#include <math.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/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_ANCHOR,
-	ISEQ_ELEMENT_LABEL,
-	ISEQ_ELEMENT_INSN,
-	ISEQ_ELEMENT_ADJUST,
-        ISEQ_ELEMENT_TRACE,
-    } type;
-    struct iseq_link_element *next;
-    struct iseq_link_element *prev;
-} LINK_ELEMENT;
-
-typedef struct iseq_link_anchor {
-    LINK_ELEMENT 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 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 operand_size;
-    int sc_state;
-    VALUE *operands;
-    struct {
-	int line_no;
-	rb_event_flag_t events;
-    } insn_info;
-} INSN;
-
-typedef struct iseq_adjust_data {
-    LINK_ELEMENT link;
-    LABEL *label;
-    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;
-    struct ensure_range *next;
-};
-
-struct iseq_compile_data_ensure_node_stack {
-    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.
- *
- * debug level:
- *  0: no debug output
- *  1: show node type
- *  2: show node important parameters
- *  ...
- *  5: show other parameters
- * 10: show every AST array
- */
-
-#ifndef CPDEBUG
-#define CPDEBUG 0
-#endif
-
-#if CPDEBUG >= 0
-#define compile_debug CPDEBUG
-#else
-#define compile_debug ISEQ_COMPILE_DATA(iseq)->option->debug_level
-#endif
-
-#if CPDEBUG
-
-#define compile_debug_print_indent(level) \
-    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)))
-
-#define debugi(header, id)  (void) \
-  (compile_debug_print_indent(1) && \
-   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)))
-
-#define debugp_verbose(header, value)  (void) \
-  (compile_debug_print_indent(2) && \
-   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)))
-
-#define debug_node_start(node)  ((void) \
-  (compile_debug_print_indent(1) && \
-   (ruby_debug_print_node(1, CPDEBUG, "", (const NODE *)(node)), gl_node_level)), \
-   gl_node_level++)
-
-#define debug_node_end()  gl_node_level --
-
-#else
-
-#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
-#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))
-#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 LABEL_FORMAT "<L%03d>"
-
-#define NEW_ISEQ(node, name, type, line_no) \
-  new_child_iseq(iseq, (node), rb_fstring(name), 0, (type), (line_no))
-
-#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))
-
-/* add an instruction */
-#define ADD_INSN(seq, line, insn) \
-  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
-
-/* 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)))
-
-/* 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)))
-
-#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)))
-
-/* Specific Insn factory */
-#define ADD_SEND(seq, line, id, argc) \
-  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), putself)
-
-#define ADD_CALL(seq, line, id, argc) \
-  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), 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))
-
-#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)))
-
-#define ADD_ADJUST_RESTORE(seq, label) \
-  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)))
-
-/* 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)))
-
-/* 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), (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)])
-
-#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 */
-#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);
-    }
-}
-
-#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[1] = {{{ISEQ_ELEMENT_ANCHOR,},}}
-#define INIT_ANCHOR(name) \
-    (name->last = &name->anchor)
-
-static inline VALUE
-freeze_hide_obj(VALUE obj)
-{
-    OBJ_FREEZE(obj);
-    RBASIC_CLEAR_CLASS(obj);
-    return obj;
-}
-
-#include "optinsn.inc"
-#if OPT_INSTRUCTIONS_UNIFICATION
-#include "optunifs.inc"
-#endif
-
-/* for debug */
-#if CPDEBUG < 0
-#define ISEQ_ARG iseq,
-#define ISEQ_ARG_DECLARE rb_iseq_t *iseq,
-#else
-#define ISEQ_ARG
-#define ISEQ_ARG_DECLARE
-#endif
-
-#if CPDEBUG
-#define gl_node_level ISEQ_COMPILE_DATA(iseq)->node_level
-#endif
-
-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 calc_sp_depth(int depth, INSN *iobj);
-
-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, 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 *const anchor, const NODE *const node);
-
-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 *const anchor)
-{
-#if CPDEBUG
-    int flag = 0;
-    LINK_ELEMENT *list, *plist;
-
-    if (!compile_debug) return;
-
-    list = anchor->anchor.next;
-    plist = &anchor->anchor;
-    while (list) {
-	if (plist != list->prev) {
-	    flag += 1;
-	}
-	plist = list;
-	list = list->next;
-    }
-
-    if (anchor->last != plist && anchor->last != 0) {
-	flag |= 0x70000;
-    }
-
-    if (flag != 0) {
-	rb_bug("list verify error: %08x (%s)", flag, info);
-    }
-#endif
-}
-#if CPDEBUG < 0
-#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 *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 APPEND_ELEM(anchor, before, elem) APPEND_ELEM(iseq, (anchor), (before), (elem))
-#endif
-
-static int
-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)
-{
-    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);
-    }
-    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 ISEQ_LAST_LINE(iseq) (ISEQ_COMPILE_DATA(iseq)->last_line)
-
-static int
-validate_label(st_data_t name, st_data_t label, st_data_t arg)
-{
-    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 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_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);
-    INIT_ANCHOR(ret);
-
-    if (IMEMO_TYPE_P(node, imemo_ifunc)) {
-        rb_raise(rb_eArgError, "unexpected imemo_ifunc");
-    }
-
-    if (node == 0) {
-        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->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: {
-	    CHECK(COMPILE(ret, "scoped node", node->nd_body));
-	    break;
-	  }
-	}
-    }
-    else {
-	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);
-	    CHECK(COMPILE(ret, "rescue", node));
-	    break;
-	  case ISEQ_TYPE_ENSURE:
-	    iseq_set_exception_local_table(iseq);
-	    CHECK(COMPILE_POPPED(ret, "ensure", node));
-	    break;
-	  case ISEQ_TYPE_PLAIN:
-	    CHECK(COMPILE(ret, "ensure", node));
-	    break;
-	  default:
-	    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->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(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);
-}
-
-static int
-rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
-{
-#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
-    const void * const *table = rb_vm_get_insns_address_table();
-    unsigned int i;
-    VALUE *encoded = (VALUE *)iseq->body->iseq_encoded;
-
-    for (i = 0; i < iseq->body->iseq_size; /* */ ) {
-	int insn = (int)iseq->body->iseq_encoded[i];
-	int len = insn_len(insn);
-	encoded[i] = (VALUE)table[insn];
-	i += len;
-    }
-    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_with_arena(struct iseq_compile_data_storage **arena, size_t size)
-{
-    void *ptr = 0;
-    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 (size >= INT_MAX - padding) rb_memerror();
-    if (storage->pos + size + padding > storage->size) {
-	unsigned int alloc_size = storage->size;
-
-	while (alloc_size < size + PADDING_SIZE_MAX) {
-	    if (alloc_size >= INT_MAX / 2) rb_memerror();
-	    alloc_size *= 2;
-	}
-	storage->next = (void *)ALLOC_N(char, alloc_size +
-					offsetof(struct iseq_compile_data_storage, buff));
-	storage = *arena = storage->next;
-	storage->next = 0;
-	storage->pos = 0;
-	storage->size = alloc_size;
-#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 += (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)
-{
-    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 *
-compile_data_alloc_label(rb_iseq_t *iseq)
-{
-    return (LABEL *)compile_data_alloc(iseq, sizeof(LABEL));
-}
-
-static ADJUST *
-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
-ELEM_INSERT_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
-{
-    elem2->next = elem1->next;
-    elem2->prev = elem1;
-    elem1->next = elem2;
-    if (elem2->next) {
-	elem2->next->prev = elem2;
-    }
-}
-
-/*
- * elem1, elemX => elemX, elem2, elem1
- */
-static void
-ELEM_INSERT_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
-{
-    elem2->prev = elem1->prev;
-    elem2->next = elem1;
-    elem1->prev = elem2;
-    if (elem2->prev) {
-	elem2->prev->next = elem2;
-    }
-}
-
-/*
- * elemX, elem1, elemY => elemX, elem2, elemY
- */
-static void
-ELEM_REPLACE(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
-{
-    elem2->prev = elem1->prev;
-    elem2->next = elem1->next;
-    if (elem1->prev) {
-	elem1->prev->next = elem2;
-    }
-    if (elem1->next) {
-	elem1->next->prev = elem2;
-    }
-}
-
-static void
-ELEM_REMOVE(LINK_ELEMENT *elem)
-{
-    elem->prev->next = elem->next;
-    if (elem->next) {
-	elem->next->prev = elem->prev;
-    }
-}
-
-static LINK_ELEMENT *
-FIRST_ELEMENT(const LINK_ANCHOR *const anchor)
-{
-    return anchor->anchor.next;
-}
-
-static LINK_ELEMENT *
-LAST_ELEMENT(LINK_ANCHOR *const anchor)
-{
-    return anchor->last;
-}
-
-static LINK_ELEMENT *
-POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor)
-{
-    LINK_ELEMENT *elem = anchor->last;
-    anchor->last = anchor->last->prev;
-    anchor->last->next = 0;
-    verify_list("pop", anchor);
-    return elem;
-}
-#if CPDEBUG < 0
-#define POP_ELEMENT(anchor) POP_ELEMENT(iseq, (anchor))
-#endif
-
-static LINK_ELEMENT *
-ELEM_FIRST_INSN(LINK_ELEMENT *elem)
-{
-    while (elem) {
-	switch (elem->type) {
-	  case ISEQ_ELEMENT_INSN:
-	  case ISEQ_ELEMENT_ADJUST:
-	    return elem;
-	  default:
-	    elem = elem->next;
-	}
-    }
-    return NULL;
-}
-
-static int
-LIST_INSN_SIZE_ONE(const LINK_ANCHOR *const anchor)
-{
-    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;
-    }
-}
-
-static int
-LIST_INSN_SIZE_ZERO(const LINK_ANCHOR *const anchor)
-{
-    if (ELEM_FIRST_INSN(FIRST_ELEMENT(anchor)) == NULL) {
-	return TRUE;
-    }
-    else {
-	return FALSE;
-    }
-}
-
-/*
- * anc1: e1, e2, e3
- * anc2: e4, e5
- *#=>
- * anc1: e1, e2, e3, e4, e5
- * anc2: e4, e5 (broken)
- */
-static void
-APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *const anc1, LINK_ANCHOR *const anc2)
-{
-    if (anc2->anchor.next) {
-	anc1->last->next = anc2->anchor.next;
-	anc2->anchor.next->prev = anc1->last;
-	anc1->last = anc2->last;
-    }
-    verify_list("append", anc1);
-}
-#if CPDEBUG < 0
-#define APPEND_LIST(anc1, anc2) APPEND_LIST(iseq, (anc1), (anc2))
-#endif
-
-#if CPDEBUG && 0
-static void
-debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *cur)
-{
-    LINK_ELEMENT *list = FIRST_ELEMENT(anchor);
-    printf("----\n");
-    printf("anch: %p, frst: %p, last: %p\n", &anchor->anchor,
-	   anchor->anchor.next, anchor->last);
-    while (list) {
-	printf("curr: %p, next: %p, prev: %p, type: %d\n", list, list->next,
-	       list->prev, (int)list->type);
-	list = list->next;
-    }
-    printf("----\n");
-
-    dump_disasm_list_with_cursor(anchor->anchor.next, cur, 0);
-    verify_list("debug list", anchor);
-}
-#if CPDEBUG < 0
-#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, 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(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;
-}
-
-static ADJUST *
-new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line)
-{
-    ADJUST *adjust = compile_data_alloc_adjust(iseq);
-    adjust->link.type = ISEQ_ELEMENT_ADJUST;
-    adjust->link.next = 0;
-    adjust->label = label;
-    adjust->line_no = line;
-    LABEL_UNREMOVABLE(label);
-    return adjust;
-}
-
-static INSN *
-new_insn_core(rb_iseq_t *iseq, int line_no,
-	      int insn_id, int argc, VALUE *argv)
-{
-    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->insn_info.line_no = line_no;
-    iobj->insn_info.events = 0;
-    iobj->operands = argv;
-    iobj->operand_size = argc;
-    iobj->sc_state = 0;
-    return iobj;
-}
-
-static INSN *
-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_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;
-	}
-	va_end(argv);
-    }
-    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, ID id, VALUE argc, const rb_iseq_t *blockiseq, VALUE flag, struct rb_callinfo_kwarg *keywords)
-{
-    VALUE *operands = compile_data_calloc2(iseq, sizeof(VALUE), 2);
-    operands[0] = (VALUE)new_callinfo(iseq, id, FIX2INT(argc), FIX2INT(flag), keywords, blockiseq != NULL);
-    operands[1] = (VALUE)blockiseq;
-    return new_insn_core(iseq, line_no, BIN(send), 2, operands);
-}
-
-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)
-{
-    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_iseq = rb_iseq_new_with_opt(&ast, name,
-				    rb_iseq_path(iseq), rb_iseq_realpath(iseq),
-				    INT2FIX(line_no), parent, type, ISEQ_COMPILE_DATA(iseq)->option);
-    debugs("[new_child_iseq]< ---------------------------------------\n");
-    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_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)
-	dump_disasm_list(FIRST_ELEMENT(anchor));
-
-    debugs("[compile step 3.1 (iseq_optimize)]\n");
-    iseq_optimize(iseq, anchor);
-
-    if (compile_debug > 5)
-	dump_disasm_list(FIRST_ELEMENT(anchor));
-
-    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(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");
-    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");
-    if (!iseq_set_exception_table(iseq)) return COMPILE_NG;
-
-    debugs("[compile step 4.3 (set_optargs_table)] \n");
-    if (!iseq_set_optargs_table(iseq)) return COMPILE_NG;
-
-    debugs("[compile step 5 (iseq_translate_threaded_code)] \n");
-    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);
-	printf("%s\n", StringValueCStr(str));
-    }
-    verify_call_cache(iseq);
-    debugs("[compile step: finish]\n");
-
-    return COMPILE_OK;
-}
-
-static int
-iseq_set_exception_local_table(rb_iseq_t *iseq)
-{
-    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_lvar_level(const rb_iseq_t *iseq)
-{
-    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->body->local_table_size; i++) {
-	if (iseq->body->local_table[i] == id) {
-	    return (int)i;
-	}
-    }
-    return -1;
-}
-
-static int
-get_local_var_idx(const rb_iseq_t *iseq, ID id)
-{
-    int idx = get_dyna_var_idx_at_raw(iseq->body->local_iseq, id);
-
-    if (idx < 0) {
-        COMPILE_ERROR(iseq, ISEQ_LAST_LINE(iseq),
-                      "get_local_var_idx: %d", idx);
-    }
-
-    return idx;
-}
-
-static int
-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->body->parent_iseq;
-	lv++;
-    }
-
-    if (idx < 0) {
-        COMPILE_ERROR(topmost_iseq, ISEQ_LAST_LINE(topmost_iseq),
-                      "get_dyna_var_idx: -1");
-    }
-
-    *level = lv;
-    *ls = iseq->body->local_table_size;
-    return idx;
-}
-
-static int
-iseq_local_block_param_p(const rb_iseq_t *iseq, unsigned int idx, unsigned int level)
-{
-    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;
-    }
-}
-
-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
-check_access_outer_variables(const rb_iseq_t *iseq, int level)
-{
-    // set access_outer_variables
-    for (int i=0; i<level; i++) {
-        iseq->body->access_outer_variables = TRUE;
-        iseq = iseq->body->parent_iseq;
-    }
-}
-
-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));
-    }
-    check_access_outer_variables(iseq, level);
-}
-
-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));
-    }
-    check_access_outer_variables(iseq, level);
-}
-
-
-
-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;
-    }
-}
-
-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++;
-
-    node = args->kw_args;
-    while (node) {
-	const NODE *val_node = node->nd_body->nd_value;
-	VALUE dv;
-
-        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;
-	    }
-
-	    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 (args->opt_args) {
-	    const NODE *node = args->opt_args;
-	    LABEL *label;
-	    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);
-                NO_CHECK(COMPILE_POPPED(optargs, "optarg", node->nd_body));
-		node = node->nd_next;
-		i += 1;
-	    }
-
-	    /* last label */
-	    label = NEW_LABEL(nd_line(node_args));
-	    rb_ary_push(labels, (VALUE)label | 1);
-	    ADD_LABEL(optargs, label);
-
-	    opt_table = ALLOC_N(VALUE, i+1);
-
-            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) {
-	    body->param.rest_start = arg_size++;
-	    body->param.flags.has_rest = TRUE;
-	    assert(body->param.rest_start != -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 (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) {
-	    body->param.block_start = arg_size++;
-	    body->param.flags.has_block = TRUE;
-	}
-
-	iseq_calc_param_size(iseq);
-	body->param.size = arg_size;
-
-	if (args->pre_init) { /* m_init */
-            NO_CHECK(COMPILE_POPPED(optargs, "init arguments (m)", args->pre_init));
-	}
-	if (args->post_init) { /* p_init */
-            NO_CHECK(COMPILE_POPPED(optargs, "init arguments (p)", args->post_init));
-	}
-
-	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|} */
-		    body->param.flags.ambiguous_param0 = TRUE;
-		}
-	    }
-	}
-    }
-
-    return COMPILE_OK;
-}
-
-static int
-iseq_set_local_table(rb_iseq_t *iseq, const ID *tbl)
-{
-    unsigned int size;
-
-    if (tbl) {
-	size = (unsigned int)*tbl;
-	tbl++;
-    }
-    else {
-	size = 0;
-    }
-
-    if (size > 0) {
-	ID *ids = (ID *)ALLOC_N(ID, size);
-	MEMCPY(ids, tbl, ID, size);
-	iseq->body->local_table = ids;
-    }
-    iseq->body->local_table_size = size;
-
-    debugs("iseq_set_local_table: %u\n", iseq->body->local_table_size);
-    return COMPILE_OK;
-}
-
-static int
-cdhash_cmp(VALUE val, VALUE 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 {
-        UNREACHABLE_RETURN(-1);
-    }
-}
-
-static st_index_t
-cdhash_hash(VALUE a)
-{
-    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));
-      default:
-        UNREACHABLE_RETURN(0);
-    }
-}
-
-static const struct st_hash_type cdhash_type = {
-    cdhash_cmp,
-    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 list -> raw instruction sequence
- */
-static int
-iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
-{
-    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 insn_num, code_index, insns_info_index, sp = 0;
-    int stack_max = fix_sp_depth(iseq, anchor);
-
-    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:
-	    {
-		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:
-	    {
-		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_TRACE:
-	    {
-		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) {
-		    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: break;
-	}
-    }
-
-    /* make instruction sequence */
-    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);
-    insns_info_index = code_index = sp = 0;
-
-    while (list) {
-	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);
-		/* fprintf(stderr, "insn: %-16s, sp: %d\n", insn_name(iobj->insn_id), sp); */
-		operands = iobj->operands;
-		insn = iobj->insn_id;
-		generated_iseq[code_index] = insn;
-		types = insn_op_types(insn);
-		len = insn_len(insn);
-
-		for (j = 0; types[j]; j++) {
-		    char type = types[j];
-		    /* printf("--> [%c - (%d-%d)]\n", type, k, j); */
-		    switch (type) {
-		      case TS_OFFSET:
-			{
-			    /* label(destination position) */
-			    LABEL *lobj = (LABEL *)operands[j];
-			    generated_iseq[code_index + 1 + j] = lobj->position - (code_index + len);
-			    break;
-			}
-		      case TS_CDHASH:
-			{
-			    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_NUM:	/* ulong */
-			generated_iseq[code_index + 1 + j] = FIX2INT(operands[j]);
-			break;
-		      case TS_VALUE:	/* VALUE */
-		      case TS_ISEQ:	/* iseq */
-			{
-			    VALUE v = operands[j];
-			    generated_iseq[code_index + 1 + j] = v;
-			    /* to mark ruby object */
-			    if (!SPECIAL_CONST_P(v)) {
-				RB_OBJ_WRITTEN(iseq, Qundef, v);
-                                FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
-			    }
-			    break;
-			}
-		      case TS_ISE: /* inline storage entry */
-			/* Treated as an IC, but may contain a markable VALUE */
-                        FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
-                        /* fall through */
-		      case TS_IC: /* inline cache */
-		      case TS_IVC: /* inline ivar cache */
-			{
-			    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;
-			    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[code_index + 1 + j] = SYM2ID(operands[j]);
-			break;
-		      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:
-			BADINSN_ERROR(iseq, iobj->insn_info.line_no,
-				      "unknown operand type: %c", type);
-			return COMPILE_NG;
-		    }
-		}
-		if (add_insn_info(insns_info, positions, insns_info_index, code_index, iobj)) insns_info_index++;
-		code_index += len;
-		break;
-	    }
-	  case ISEQ_ELEMENT_LABEL:
-	    {
-		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:
-	    {
-		ADJUST *adjust = (ADJUST *)list;
-		int orig_sp = sp;
-
-		if (adjust->label) {
-		    sp = adjust->label->sp;
-		}
-		else {
-		    sp = 0;
-		}
-
-		if (adjust->line_no != -1) {
-		    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++;
-		    }
-		    if (diff > 1) {
-			generated_iseq[code_index++] = BIN(adjuststack);
-			generated_iseq[code_index++] = orig_sp - sp;
-		    }
-		    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;
-	    }
-	  default:
-	    /* ignore */
-	    break;
-	}
-	list = list->next;
-    }
-
-    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;
-
-    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;
-}
-
-static int
-label_get_position(LABEL *lobj)
-{
-    return lobj->position;
-}
-
-static int
-label_get_sp(LABEL *lobj)
-{
-    return lobj->sp;
-}
-
-static int
-iseq_set_exception_table(rb_iseq_t *iseq)
-{
-    const VALUE *tptr, *ptr;
-    unsigned int tlen, i;
-    struct iseq_catch_table_entry *entry;
-
-    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;
-	    }
-	}
-	iseq->body->catch_table = table;
-	RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->catch_table_ary, 0); /* free */
-    }
-
-    return COMPILE_OK;
-}
-
-/*
- * set optional argument table
- *   def foo(a, b=expr1, c=expr2)
- *   =>
- *    b:
- *      expr1
- *    c:
- *      expr2
- */
-static int
-iseq_set_optargs_table(rb_iseq_t *iseq)
-{
-    int i;
-    VALUE *opt_table = (VALUE *)iseq->body->param.opt_table;
-
-    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;
-}
-
-static LINK_ELEMENT *
-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) {
-	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;
-}
-
-static LINK_ELEMENT *
-get_next_insn(INSN *iobj)
-{
-    LINK_ELEMENT *list = iobj->link.next;
-
-    while (list) {
-	if (IS_INSN(list) || IS_ADJUST(list)) {
-	    return list;
-	}
-	list = list->next;
-    }
-    return 0;
-}
-
-static LINK_ELEMENT *
-get_prev_insn(INSN *iobj)
-{
-    LINK_ELEMENT *list = iobj->link.prev;
-
-    while (list) {
-	if (IS_INSN(list) || IS_ADJUST(list)) {
-	    return list;
-	}
-	list = list->prev;
-    }
-    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 *const iobj = (INSN *)list;
-
-  again:
-    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);
-
-	if (diobj == niobj) {
-	    /*
-	     *   jump LABEL
-	     *  LABEL:
-	     * =>
-	     *   LABEL:
-	     */
-	    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)) {
-	    /*
-	     *  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 (IS_INSN_ID(diobj, leave)) {
-	    INSN *pop;
-	    /*
-	     *  jump LABEL
-	     *  ...
-	     * LABEL:
-	     *  leave
-	     * =>
-	     *  leave
-	     *  pop
-	     *  ...
-	     * LABEL:
-	     *  leave
-	     */
-	    /* replace */
-	    unref_destination(iobj, 0);
-            iobj->insn_id = BIN(leave);
-	    iobj->operand_size = 0;
-	    iobj->insn_info = diobj->insn_info;
-	    /* adjust stack depth */
-	    pop = new_insn_body(iseq, diobj->insn_info.line_no, BIN(pop), 0);
-            ELEM_INSERT_NEXT(&iobj->link, &pop->link);
-	    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);
-		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;
-	}
-    }
-
-    /*
-     * 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
-	 *   ...
-	 * L1:
-	 *   jump L2
-	 * =>
-	 *   if L2
-	 */
-	INSN *nobj = (INSN *)get_destination_insn(iobj);
-
-        /* 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 (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, ...
-	 *  leave # unreachable
-	 */
-	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) {
-            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);
-	    }
-	}
-    }
-
-    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(rb_iseq_t *iseq, INSN *iobj, int insn_id)
-{
-    iobj->insn_id = insn_id;
-    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 (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;
-		}
-	    }
-	}
-    }
-
-    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;
-		}
-		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;
-		}
-		break;
-	      case 2:
-		switch (vm_ci_mid(ci)) {
-		  case idASET:	 SP_INSN(aset);	  return COMPILE_OK;
-		}
-		break;
-	    }
-	}
-
-	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 *const anchor)
-{
-    LINK_ELEMENT *list;
-    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 (IS_INSN(list)) {
-	    if (do_peepholeopt) {
-		iseq_peephole_optimize(iseq, list, tailcallopt);
-	    }
-	    if (do_si) {
-		iseq_specialized_instruction(iseq, (INSN *)list);
-	    }
-	    if (do_ou) {
-		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;
-}
-
-#if OPT_INSTRUCTIONS_UNIFICATION
-static INSN *
-new_unified_insn(rb_iseq_t *iseq,
-		 int insn_id, int size, LINK_ELEMENT *seq_list)
-{
-    INSN *iobj = 0;
-    LINK_ELEMENT *list = seq_list;
-    int i, argc = 0;
-    VALUE *operands = 0, *ptr = 0;
-
-
-    /* count argc */
-    for (i = 0; i < size; i++) {
-	iobj = (INSN *)list;
-	argc += iobj->operand_size;
-	list = list->next;
-    }
-
-    if (argc > 0) {
-	ptr = operands = compile_data_alloc2(iseq, sizeof(VALUE), argc);
-    }
-
-    /* copy operands */
-    list = seq_list;
-    for (i = 0; i < size; i++) {
-	iobj = (INSN *)list;
-	MEMCPY(ptr, iobj->operands, VALUE, iobj->operand_size);
-	ptr += iobj->operand_size;
-	list = list->next;
-    }
-
-    return new_insn_core(iseq, iobj->insn_info.line_no, insn_id, argc, operands);
-}
-#endif
-
-/*
- * This scheme can get more performance if do this optimize with
- * label address resolving.
- * It's future work (if compile time was bottle neck).
- */
-static int
-iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
-{
-#if OPT_INSTRUCTIONS_UNIFICATION
-    LINK_ELEMENT *list;
-    INSN *iobj, *niobj;
-    int id, k;
-    intptr_t j;
-
-    list = FIRST_ELEMENT(anchor);
-    while (list) {
-	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 < (intptr_t)entry[0]; j++) {
-		    const int *unified = entry[j];
-		    LINK_ELEMENT *li = list->next;
-		    for (k = 2; k < unified[1]; k++) {
-			if (!IS_INSN(li) ||
-			    ((INSN *)li)->insn_id != unified[k]) {
-			    goto miss;
-			}
-			li = li->next;
-		    }
-		    /* matched */
-		    niobj =
-			new_unified_insn(iseq, unified[0], unified[1] - 1,
-					 list);
-
-		    /* insert to list */
-		    niobj->link.prev = (LINK_ELEMENT *)iobj->link.prev;
-		    niobj->link.next = li;
-		    if (li) {
-			li->prev = (LINK_ELEMENT *)niobj;
-		    }
-
-		    list->prev->next = (LINK_ELEMENT *)niobj;
-		    list = (LINK_ELEMENT *)niobj;
-		    break;
-		  miss:;
-		}
-	    }
-	}
-	list = list->next;
-    }
-#endif
-    return COMPILE_OK;
-}
-
-#if OPT_STACK_CACHING
-
-#define SC_INSN(insn, stat) sc_insn_info[(insn)][(stat)]
-#define SC_NEXT(insn)       sc_insn_next[(insn)]
-
-#include "opt_sc.inc"
-
-static int
-insn_set_sc_state(rb_iseq_t *iseq, const LINK_ELEMENT *anchor, INSN *iobj, int state)
-{
-    int nstate;
-    int insn_id;
-
-    insn_id = iobj->insn_id;
-    iobj->insn_id = SC_INSN(insn_id, state);
-    nstate = SC_NEXT(iobj->insn_id);
-
-    if (insn_id == BIN(jump) ||
-	insn_id == BIN(branchif) || insn_id == BIN(branchunless)) {
-	LABEL *lobj = (LABEL *)OPERAND_AT(iobj, 0);
-
-	if (lobj->sc_state != 0) {
-	    if (lobj->sc_state != nstate) {
-		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 {
-	    lobj->sc_state = nstate;
-	}
-	if (insn_id == BIN(jump)) {
-	    nstate = SCS_XX;
-	}
-    }
-    else if (insn_id == BIN(leave)) {
-	nstate = SCS_XX;
-    }
-
-    return nstate;
-}
-
-static int
-label_set_sc_state(LABEL *lobj, int state)
-{
-    if (lobj->sc_state != 0) {
-	if (lobj->sc_state != state) {
-	    state = lobj->sc_state;
-	}
-    }
-    else {
-	lobj->sc_state = state;
-    }
-
-    return state;
-}
-
-
-#endif
-
-static int
-iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
-{
-#if OPT_STACK_CACHING
-    LINK_ELEMENT *list;
-    int state, insn_id;
-
-    /* initialize */
-    state = SCS_XX;
-    list = FIRST_ELEMENT(anchor);
-    /* dump_disasm_list(list); */
-
-    /* for each list element */
-    while (list) {
-      redo_point:
-	switch (list->type) {
-	  case ISEQ_ELEMENT_INSN:
-	    {
-		INSN *iobj = (INSN *)list;
-		insn_id = iobj->insn_id;
-
-		/* dump_disasm_list(list); */
-
-		switch (insn_id) {
-		  case BIN(nop):
-		    {
-			/* exception merge point */
-			if (state != SCS_AX) {
-			    INSN *rpobj =
-				new_insn_body(iseq, 0, BIN(reput), 0);
-
-			    /* replace this insn */
-			    ELEM_REPLACE(list, (LINK_ELEMENT *)rpobj);
-			    list = (LINK_ELEMENT *)rpobj;
-			    goto redo_point;
-			}
-			break;
-		    }
-		  case BIN(swap):
-		    {
-			if (state == SCS_AB || state == SCS_BA) {
-			    state = (state == SCS_AB ? SCS_BA : SCS_AB);
-
-			    ELEM_REMOVE(list);
-			    list = list->next;
-			    goto redo_point;
-			}
-			break;
-		    }
-		  case BIN(pop):
-		    {
-			switch (state) {
-			  case SCS_AX:
-			  case SCS_BX:
-			    state = SCS_XX;
-			    break;
-			  case SCS_AB:
-			    state = SCS_AX;
-			    break;
-			  case SCS_BA:
-			    state = SCS_BX;
-			    break;
-			  case SCS_XX:
-			    goto normal_insn;
-			  default:
-			    COMPILE_ERROR(iseq, iobj->insn_info.line_no,
-					  "unreachable");
-			    return COMPILE_NG;
-			}
-			/* remove useless pop */
-			ELEM_REMOVE(list);
-			list = list->next;
-			goto redo_point;
-		    }
-		  default:;
-		    /* none */
-		}		/* end of switch */
-	      normal_insn:
-		state = insn_set_sc_state(iseq, anchor, iobj, state);
-		break;
-	    }
-	  case ISEQ_ELEMENT_LABEL:
-	    {
-		LABEL *lobj;
-		lobj = (LABEL *)list;
-
-		state = label_set_sc_state(lobj, state);
-	    }
-	  default:
-	    break;
-	}
-	list = list->next;
-    }
-#endif
-    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 *const ret, const NODE *const node, int *cntp)
-{
-    const NODE *list = node->nd_next;
-    VALUE lit = node->nd_lit;
-    LINK_ELEMENT *first_lit = 0;
-    int cnt = 0;
-
-    debugp_param("nd_lit", 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) {
-	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 *const ret, const NODE *const node)
-{
-    int cnt;
-    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 *const ret, const NODE *const node)
-{
-    int 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_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));
-	    CHECK(compile_branch_condition(iseq, ret, cond->nd_1st, label,
-					   else_label));
-	    if (!label->refcnt) break;
-	    ADD_LABEL(ret, label);
-	    cond = cond->nd_2nd;
-	    goto again;
-	}
-      case NODE_OR:
-	{
-	    LABEL *label = NEW_LABEL(nd_line(cond));
-	    CHECK(compile_branch_condition(iseq, ret, cond->nd_1st, then_label,
-					   label));
-	    if (!label->refcnt) break;
-	    ADD_LABEL(ret, label);
-	    cond = cond->nd_2nd;
-	    goto again;
-	}
-      case NODE_LIT:		/* NODE_LIT is always true */
-      case NODE_TRUE:
-      case NODE_STR:
-      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);
-        return COMPILE_OK;
-      case NODE_FALSE:
-      case NODE_NIL:
-	/* printf("useless condition eliminate (%s)\n", ruby_node_name(nd_type(cond))); */
-	ADD_INSNL(ret, nd_line(cond), jump, 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);
-        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
-keyword_node_p(const NODE *const node)
-{
-    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;
-
-	while (node) {
-	    const NODE *key_node = node->nd_head;
-            seen_nodes++;
-
-	    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;
-	    }
-	    node = node->nd_next; /* skip value node */
-	    node = node->nd_next;
-	}
-
-	/* 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;
-	}
-    }
-    return FALSE;
-}
-
-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));
-        }
-    }
-
-    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;
-    }
-}
-
-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));
-	}
-        return 0;
-    }
-
-    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 inline int
-static_literal_node_pair_p(const NODE *node, const rb_iseq_t *iseq)
-{
-    return node->nd_head && static_literal_node_p(node, iseq) && static_literal_node_p(node->nd_next, iseq);
-}
-
-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 rb_fstring(node->nd_lit);
-    }
-    return Qundef;
-}
-
-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) {
-	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);
-	}
-
-	ADD_INSN(cond_seq, nd_line(val), dup); /* dup target */
-
-	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 {
-	    if (!COMPILE(cond_seq, "when cond", val)) return -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 only_special_literals;
-}
-
-static int
-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;
-	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);
-	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);
-	CHECK(COMPILE_POPPED(anchor, "masgn lhs", node));
-	ELEM_REMOVE(FIRST_ELEMENT(anchor));
-	ADD_SEQ(ret, anchor);
-      }
-    }
-
-    return COMPILE_OK;
-}
-
-static int
-compile_massign_opt_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *lhsn)
-{
-    if (lhsn) {
-	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 *const ret,
-		    const NODE *rhsn, const NODE *orig_lhsn)
-{
-    VALUE mem[64];
-    const int memsize = numberof(mem);
-    int memindex = 0;
-    int llen = 0, rlen = 0;
-    int i;
-    const NODE *lhsn = orig_lhsn;
-
-#define MEMORY(v) { \
-    int i; \
-    if (memindex == memsize) return 0; \
-    for (i=0; i<memindex; i++) { \
-	if (mem[i] == (v)) return 0; \
-    } \
-    mem[memindex++] = (v); \
-}
-
-    if (rhsn == 0 || nd_type(rhsn) != NODE_LIST) {
-	return 0;
-    }
-
-    while (lhsn) {
-	const NODE *ln = lhsn->nd_head;
-	switch (nd_type(ln)) {
-	  case NODE_LASGN:
-	    MEMORY(ln->nd_vid);
-	    break;
-	  case NODE_DASGN:
-	  case NODE_DASGN_CURR:
-	  case NODE_IASGN:
-	  case NODE_CVASGN:
-	    MEMORY(ln->nd_vid);
-	    break;
-	  default:
-	    return 0;
-	}
-	lhsn = lhsn->nd_next;
-	llen++;
-    }
-
-    while (rhsn) {
-	if (llen <= rlen) {
-            NO_CHECK(COMPILE_POPPED(ret, "masgn val (popped)", rhsn->nd_head));
-	}
-	else {
-            NO_CHECK(COMPILE(ret, "masgn val", rhsn->nd_head));
-	}
-	rhsn = rhsn->nd_next;
-	rlen++;
-    }
-
-    if (llen > rlen) {
-	for (i=0; i<llen-rlen; i++) {
-	    ADD_INSN(ret, nd_line(orig_lhsn), putnil);
-	}
-    }
-
-    compile_massign_opt_lhs(iseq, ret, orig_lhsn);
-    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 *const ret, const NODE *const node, int popped)
-{
-    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 (!popped || splatn || !compile_massign_opt(iseq, ret, rhsn, lhsn)) {
-	int llen = 0;
-	int expand = 1;
-	DECL_ANCHOR(lhsseq);
-
-	INIT_ANCHOR(lhsseq);
-
-	while (lhsn) {
-	    CHECK(compile_massign_lhs(iseq, lhsseq, lhsn->nd_head));
-	    llen += 1;
-	    lhsn = lhsn->nd_next;
-	}
-
-        NO_CHECK(COMPILE(ret, "normal masgn rhs", rhsn));
-
-	if (!popped) {
-	    ADD_INSN(ret, nd_line(node), dup);
-	}
-	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 */
-		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 (NODE_NAMED_REST_P(restn)) {
-		    CHECK(compile_massign_lhs(iseq, ret, restn));
-		}
-		while (postn) {
-		    CHECK(compile_massign_lhs(iseq, ret, postn->nd_head));
-		    postn = postn->nd_next;
-		}
-	    }
-	    else {
-		/* a, b, *r */
-		CHECK(compile_massign_lhs(iseq, ret, splatn));
-	    }
-	}
-    }
-    return COMPILE_OK;
-}
-
-static int
-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_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_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), putobject, Qtrue);
-        ADD_INSN1(body, nd_line(node), getconstant, ID2SYM(node->nd_mid));
-	break;
-      case NODE_COLON2:
-	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:
-	CHECK(COMPILE(pref, "const colon2 prefix", node));
-	break;
-    }
-    return COMPILE_OK;
-}
-
-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 VM_DEFINECLASS_FLAG_SCOPED;
-    }
-    else if (cpath->nd_head) {
-	/* Bar::Foo */
-        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_CONST_BASE));
-	return 0;
-    }
-}
-
-static inline int
-private_recv_p(const NODE *node)
-{
-    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:
-	expr_type = DEFINED_NIL;
-	break;
-      case NODE_SELF:
-	expr_type = DEFINED_SELF;
-	break;
-      case NODE_TRUE:
-	expr_type = DEFINED_TRUE;
-	break;
-      case NODE_FALSE:
-	expr_type = DEFINED_FALSE;
-	break;
-
-      case NODE_LIST:{
-	const NODE *vals = node;
-
-	do {
-	    defined_expr0(iseq, ret, vals->nd_head, lfinish, Qfalse);
-
-	    if (!lfinish[1]) {
-                lfinish[1] = NEW_LABEL(line);
-	    }
-            ADD_INSNL(ret, line, branchunless, lfinish[1]);
-	} while ((vals = vals->nd_next) != NULL);
-      }
-        /* fall through */
-      case NODE_STR:
-      case NODE_LIT:
-      case NODE_ZLIST:
-      case NODE_AND:
-      case NODE_OR:
-      default:
-	expr_type = DEFINED_EXPR;
-	break;
-
-	/* variables */
-      case NODE_LVAR:
-      case NODE_DVAR:
-	expr_type = DEFINED_LVAR;
-	break;
-
-      case NODE_IVAR:
-        ADD_INSN(ret, line, putnil);
-        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_IVAR),
-		  ID2SYM(node->nd_vid), needstr);
-        return;
-
-      case NODE_GVAR:
-        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, line, putnil);
-        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_CVAR),
-		  ID2SYM(node->nd_vid), needstr);
-        return;
-
-      case NODE_CONST:
-        ADD_INSN(ret, line, putnil);
-        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_CONST),
-		  ID2SYM(node->nd_vid), needstr);
-        return;
-      case NODE_COLON2:
-	if (!lfinish[1]) {
-            lfinish[1] = NEW_LABEL(line);
-	}
-	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));
-
-        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, 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:{
-	const int explicit_receiver =
-	    (type == NODE_CALL || type == NODE_OPCALL ||
-	     (type == NODE_ATTRASGN && !private_recv_p(node)));
-
-	if (!lfinish[1] && (node->nd_args || explicit_receiver)) {
-            lfinish[1] = NEW_LABEL(line);
-	}
-	if (node->nd_args) {
-	    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, line, putself);
-            ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_FUNC),
-		      ID2SYM(node->nd_mid), needstr);
-	}
-        return;
-      }
-
-      case NODE_YIELD:
-        ADD_INSN(ret, line, putnil);
-        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_YIELD), 0,
-		  needstr);
-        return;
-
-      case NODE_BACK_REF:
-      case NODE_NTH_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;
-
-      case NODE_SUPER:
-      case NODE_ZSUPER:
-        ADD_INSN(ret, line, putnil);
-        ADD_INSN3(ret, line, defined, INT2FIX(DEFINED_ZSUPER), 0,
-		  needstr);
-        return;
-
-      case NODE_OP_ASGN1:
-      case NODE_OP_ASGN2:
-      case NODE_OP_ASGN_OR:
-      case NODE_OP_ASGN_AND:
-      case NODE_MASGN:
-      case NODE_LASGN:
-      case NODE_DASGN:
-      case NODE_DASGN_CURR:
-      case NODE_GASGN:
-      case NODE_IASGN:
-      case NODE_CDECL:
-      case NODE_CVASGN:
-	expr_type = DEFINED_ASGN;
-	break;
-    }
-
-    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]);
-    }
-}
-
-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(const rb_iseq_t *orig_iseq)
-{
-    int level = 1;
-    const rb_iseq_t *iseq = orig_iseq;
-
-    if (orig_iseq->body->parent_iseq != 0) {
-	while (orig_iseq->body->local_iseq != iseq) {
-	    if (iseq->body->type == ISEQ_TYPE_BLOCK) {
-		level++;
-	    }
-	    iseq = iseq->body->parent_iseq;
-	}
-    }
-
-    if (level == 1) {
-	return rb_sprintf("block in %"PRIsVALUE, iseq->body->location.label);
-    }
-    else {
-	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, const NODE *const node)
-{
-    enl->ensure_node = node;
-    enl->prev = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack;	/* prev */
-    enl->erange = er;
-    ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enl;
-}
-
-static void
-add_ensure_range(rb_iseq_t *iseq, struct ensure_range *erange,
-		 LABEL *lstart, LABEL *lend)
-{
-    struct ensure_range *ne =
-	compile_data_alloc(iseq, sizeof(struct ensure_range));
-
-    while (erange->next != 0) {
-	erange = erange->next;
-    }
-    ne->next = 0;
-    ne->begin = lend;
-    ne->end = erange->end;
-    erange->end = lstart;
-
-    erange->next = ne;
-}
-
-static void
-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(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 != NULL) {
-	    DECL_ANCHOR(ensure_part);
-	    LABEL *lstart = NEW_LABEL(0);
-	    LABEL *lend = NEW_LABEL(0);
-	    INIT_ANCHOR(ensure_part);
-
-	    add_ensure_range(iseq, enlp->erange, lstart, lend);
-
-	    ISEQ_COMPILE_DATA(iseq)->ensure_node_stack = enlp->prev;
-	    ADD_LABEL(ensure_part, lstart);
-            NO_CHECK(COMPILE_POPPED(ensure_part, "ensure part", enlp->ensure_node));
-	    ADD_LABEL(ensure_part, lend);
-	    ADD_SEQ(ensure, ensure_part);
-	}
-	else {
-	    if (!is_return) {
-		break;
-	    }
-	}
-	enlp = enlp->prev;
-    }
-    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_core(rb_iseq_t *iseq, LINK_ANCHOR *const args, const NODE *argn,
-                int dup_rest, unsigned int *flag, struct rb_callinfo_kwarg **keywords)
-{
-    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);
-}
-
-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) {
-        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;
-}
-
-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);
-
-    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);
-}
-
-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 !(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
-    }
-    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);
-}
-
-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;
-    }
-}
-
-static int
-compile_if(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped, const enum node_type type)
-{
-    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);
-    }
-
-    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);
-    }
-
-    ADD_SEQ(ret, cond_seq);
-
-    if (then_label->refcnt && else_label->refcnt) {
-	branches = decl_branch_base(iseq, node, type == NODE_IF ? "if" : "unless");
-    }
-
-    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);
-	}
-	ADD_SEQ(ret, then_seq);
-    }
-
-    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);
-    }
-
-    return COMPILE_OK;
-}
-
-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;
-
-    INIT_ANCHOR(head);
-    INIT_ANCHOR(body_seq);
-    INIT_ANCHOR(cond_seq);
-
-    RHASH_TBL_RAW(literals)->type = &cdhash_type;
-
-    CHECK(COMPILE(head, "case base", node->nd_head));
-
-    branches = decl_branch_base(iseq, node, "case");
-
-    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);
-	    }
-	}
-	else {
-	    EXPECT_NODE_NONULL("NODE_CASE", node, NODE_LIST, 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_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);
-    }
-
-    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);
-    }
-
-    ADD_SEQ(ret, cond_seq);
-    ADD_SEQ(ret, body_seq);
-    ADD_LABEL(ret, endlabel);
-    return COMPILE_OK;
-}
-
-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;
-	    }
-	    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);
-	}
-	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;
-}
-
-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);
-
-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_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;
-}
-
-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;
-}
-
-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);
-    }
-
-    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));
-
-    // 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));
-    }
-
-    ADD_INSNL(ret, line, branchunless, match_failed);
-
-    ADD_SEND(ret, line, rb_intern("deconstruct"), INT2FIX(0));
-
-    // 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_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);
-
-    ADD_LABEL(ret, deconstructed);
-
-    return COMPILE_OK;
-}
-
-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;
-
-    INIT_ANCHOR(head);
-    INIT_ANCHOR(body_seq);
-    INIT_ANCHOR(cond_seq);
-
-    branches = decl_branch_base(iseq, node, "case");
-
-    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);
-        }
-        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);
-        }
-    }
-
-    ADD_SEQ(ret, cond_seq);
-    ADD_SEQ(ret, body_seq);
-    ADD_LABEL(ret, endlabel);
-    return COMPILE_OK;
-}
-
-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);
-
-    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;
-
-    struct iseq_compile_data_ensure_node_stack enl;
-
-    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);
-
-    LABEL *next_catch_label = NEW_LABEL(line);
-    LABEL *tmp_label = NULL;
-
-    ISEQ_COMPILE_DATA(iseq)->loopval_popped = 0;
-    push_ensure_entry(iseq, &enl, NULL, NULL);
-
-    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 {
-        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_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 {
-	const rb_iseq_t *ip = iseq;
-
-	while (ip) {
-	    if (!ISEQ_COMPILE_DATA(ip)) {
-		ip = 0;
-		break;
-	    }
-
-            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;
-	    }
-
-	    ip = ip->body->parent_iseq;
-	}
-	if (ip != 0) {
-	    CHECK(COMPILE(ret, "next val", node->nd_stts));
-            ADD_INSN1(ret, line, throw, INT2FIX(throw_flag | TAG_NEXT));
-
-	    if (popped) {
-		ADD_INSN(ret, line, pop);
-	    }
-	}
-	else {
-	    COMPILE_ERROR(ERROR_ARGS "Invalid next");
-	    return COMPILE_NG;
-	}
-    }
-    return COMPILE_OK;
-}
-
-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;
-
-	while (ip) {
-	    if (!ISEQ_COMPILE_DATA(ip)) {
-		ip = 0;
-		break;
-	    }
-
-	    if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
-		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 redo");
-                return COMPILE_NG;
-	    }
-
-	    ip = ip->body->parent_iseq;
-	}
-	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 {
-	    COMPILE_ERROR(ERROR_ARGS "Invalid redo");
-	    return COMPILE_NG;
-	}
-    }
-    return COMPILE_OK;
-}
-
-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 (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 {
-	COMPILE_ERROR(ERROR_ARGS "Invalid retry");
-	return COMPILE_NG;
-    }
-    return COMPILE_OK;
-}
-
-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);
-
-    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;
-}
-
-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;
-		}
-		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);
-	    }
-	}
-	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;
-}
-
-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;
-	}
-    }
-
-    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;
-	}
-	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;
-	}
-
-	if (type == ISEQ_TYPE_METHOD) {
-	    splabel = NEW_LABEL(0);
-	    ADD_LABEL(ret, splabel);
-	    ADD_ADJUST(ret, line, 0);
-	}
-
-	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, line, throw, INT2FIX(TAG_RETURN));
-	    if (popped) {
-		ADD_INSN(ret, line, pop);
-	    }
-	}
-    }
-    return COMPILE_OK;
-}
-
-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_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;
-    NODE *args_node = node->nd_args;
-
-    if (UNLIKELY(iseq_has_builtin_function_table(iseq)) &&
-        (builtin_func = iseq_builtin_function_name(type, node->nd_recv, mid)) != NULL) {
-
-        if (parent_block != NULL) {
-            COMPILE_ERROR(iseq, line, "should not call builtins here.");
-            return COMPILE_NG;
-        }
-        else {
-            char inline_func[0x20];
-            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;
-                }
-
-                int inline_index = GET_VM()->builtin_inline_index++;
-                snprintf(inline_func, 0x20, "_bi%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);
-
-            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;
-        }
-    }
-
-
-    /* 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);
-	}
-    }
-
-    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(line);
-	CHECK(COMPILE(ret, "nd_1st", node->nd_1st));
-	if (!popped) {
-	    ADD_INSN(ret, line, dup);
-	}
-	if (type == NODE_AND) {
-	    ADD_INSNL(ret, line, branchunless, end_label);
-	}
-	else {
-	    ADD_INSNL(ret, line, branchif, end_label);
-	}
-	if (!popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	CHECK(COMPILE_(ret, "nd_2nd", node->nd_2nd, popped));
-	ADD_LABEL(ret, end_label);
-	break;
-      }
-
-      case NODE_MASGN:{
-	compile_massign(iseq, ret, node, popped);
-	break;
-      }
-
-      case NODE_LASGN:{
-	ID id = node->nd_vid;
-	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);
-	CHECK(COMPILE(ret, "rvalue", node->nd_value));
-
-	if (!popped) {
-	    ADD_INSN(ret, line, dup);
-	}
-	ADD_SETLOCAL(ret, line, idx, get_lvar_level(iseq));
-	break;
-      }
-      case NODE_DASGN:
-      case NODE_DASGN_CURR:{
-	int idx, lv, ls;
-	ID id = node->nd_vid;
-	CHECK(COMPILE(ret, "dvalue", node->nd_value));
-	debugi("dassn id", rb_id2str(id) ? id : '*');
-
-	if (!popped) {
-	    ADD_INSN(ret, line, dup);
-	}
-
-	idx = get_dyna_var_idx(iseq, id, &lv, &ls);
-
-	if (idx < 0) {
-	    COMPILE_ERROR(ERROR_ARGS "NODE_DASGN(_CURR): unknown id (%"PRIsVALUE")",
-			  rb_id2str(id));
-	    goto ng;
-	}
-	ADD_SETLOCAL(ret, line, ls - idx, lv);
-	break;
-      }
-      case NODE_GASGN:{
-	CHECK(COMPILE(ret, "lvalue", node->nd_value));
-
-	if (!popped) {
-	    ADD_INSN(ret, line, dup);
-	}
-	ADD_INSN1(ret, line, setglobal, ID2SYM(node->nd_entry));
-	break;
-      }
-      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:{
-        CHECK(COMPILE(ret, "lvalue", node->nd_value));
-
-        if (!popped) {
-            ADD_INSN(ret, line, dup);
-        }
-
-	if (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, line, setconstant, ID2SYM(node->nd_else->nd_mid));
-	}
-	break;
-      }
-      case NODE_CVASGN:{
-	CHECK(COMPILE(ret, "cvasgn val", node->nd_value));
-	if (!popped) {
-	    ADD_INSN(ret, line, dup);
-	}
-	ADD_INSN1(ret, line, setclassvariable,
-		  ID2SYM(node->nd_vid));
-	break;
-      }
-      case NODE_OP_ASGN1: {
-	VALUE argc;
-	unsigned int flag = 0;
-	int asgnflag = 0;
-	ID id = node->nd_mid;
-	int boff = 0;
-
-	/*
-	 * a[x] (op)= y
-	 *
-	 * 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
-	 */
-
-	/*
-	 * nd_recv[nd_args->nd_body] (nd_mid)= nd_args->nd_head;
-	 * NODE_OP_ASGN nd_recv
-	 *              nd_args->nd_head
-	 *              nd_args->nd_body
-	 *              nd_mid
-	 */
-
-	if (!popped) {
-	    ADD_INSN(ret, line, putnil);
-	}
-	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, line, dupn, FIXNUM_INC(argc, 1 + boff));
-        flag |= asgnflag;
-	ADD_SEND_WITH_FLAG(ret, line, idAREF, argc, INT2FIX(flag));
-
-	if (id == idOROP || id == idANDOP) {
-	    /* a[x] ||= y  or  a[x] &&= y
-
-	       unless/if a[x]
-	       a[x]= y
-	       else
-	       nil
-	       end
-	    */
-	    LABEL *label = NEW_LABEL(line);
-	    LABEL *lfin = NEW_LABEL(line);
-
-	    ADD_INSN(ret, line, dup);
-	    if (id == idOROP) {
-		ADD_INSNL(ret, line, branchif, label);
-	    }
-	    else { /* idANDOP */
-		ADD_INSNL(ret, line, branchunless, label);
-	    }
-	    ADD_INSN(ret, line, pop);
-
-	    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 {
-		if (boff > 0)
-		    ADD_INSN(ret, line, swap);
-		ADD_SEND_WITH_FLAG(ret, line, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
-	    }
-	    ADD_INSN(ret, line, pop);
-	    ADD_INSNL(ret, line, jump, lfin);
-	    ADD_LABEL(ret, label);
-	    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 {
-	    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 {
-		if (boff > 0)
-		    ADD_INSN(ret, line, swap);
-		ADD_SEND_WITH_FLAG(ret, line, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
-	    }
-	    ADD_INSN(ret, line, pop);
-	}
-
-	break;
-      }
-      case NODE_OP_ASGN2:{
-	ID atype = node->nd_next->nd_mid;
-	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
-	  r.a &&= v # asgn2
-
-	  eval r    # r
-	  dup       # r r
-	  eval r.a  # r o
-
-	  # or
-	  dup       # r o o
-	  if lcfin  # r o
-	  pop       # r
-	  eval v    # r v
-	  swap      # v r
-	  topn 1    # v r v
-	  send a=   # v ?
-	  jump lfin # v ?
-
-	  lcfin:      # r o
-	  swap      # o r
-
-	  lfin:       # o ?
-	  pop       # o
-
-	  # and
-	  dup       # r o o
-	  unless lcfin
-	  pop       # r
-	  eval v    # r v
-	  swap      # v r
-	  topn 1    # v r v
-	  send a=   # v ?
-	  jump lfin # v ?
-
-	  # others
-	  eval v    # r o v
-	  send ??   # r w
-	  send a=   # w
-
-	*/
-
-	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 == idOROP || atype == idANDOP) {
-	    ADD_INSN(ret, line, dup);
-	    if (atype == idOROP) {
-		ADD_INSNL(ret, line, branchif, lcfin);
-	    }
-	    else { /* idANDOP */
-		ADD_INSNL(ret, line, branchunless, lcfin);
-	    }
-	    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, 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 {
-	    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);
-	    }
-	}
-	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(line);
-	LABEL *lassign;
-
-	if (nd_type(node) == NODE_OP_ASGN_OR) {
-	    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(line);
-	    }
-	    ADD_INSNL(ret, line, branchunless, lassign);
-	}
-	else {
-	    lassign = NEW_LABEL(line);
-	}
-
-	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, line, branchunless, lfin);
-	}
-	else {
-	    ADD_INSNL(ret, line, branchif, lfin);
-	}
-
-	ADD_INSN(ret, line, pop);
-	ADD_LABEL(ret, lassign);
-	CHECK(COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_value", node->nd_value));
-	ADD_LABEL(ret, lfin);
-
-	if (popped) {
-	    /* we can apply more optimize */
-	    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);
-	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(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;
-	    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 = local_body->param.lead_num;
-
-	    /* normal arguments */
-	    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 (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;
-
-		ADD_GETLOCAL(args, line, idx, lvar_level);
-		ADD_INSN1(args, line, splatarray, Qfalse);
-
-		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 (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);
-		    }
-		    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;
-	    }
-	}
-
-	ADD_INSN(ret, line, putself);
-	ADD_SEQ(ret, args);
-        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 (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_LIST:{
-        CHECK(compile_array(iseq, ret, node, popped) >= 0);
-	break;
-      }
-      case NODE_ZLIST:{
-	if (!popped) {
-	    ADD_INSN1(ret, line, newarray, INT2FIX(0));
-	}
-	break;
-      }
-      case NODE_VALUES:{
-	const NODE *n = node;
-	if (popped) {
-	    COMPILE_ERROR(ERROR_ARGS "NODE_VALUES: must not be popped");
-	}
-	while (n) {
-	    CHECK(COMPILE(ret, "values item", n->nd_head));
-	    n = n->nd_next;
-	}
-	ADD_INSN1(ret, line, newarray, INT2FIX(node->nd_alen));
-	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 int flag = 0;
-	struct rb_callinfo_kwarg *keywords = NULL;
-
-	INIT_ANCHOR(args);
-
-        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, &keywords);
-	    CHECK(!NIL_P(argc));
-	}
-	else {
-	    argc = INT2FIX(0);
-	}
-
-	ADD_SEQ(ret, args);
-	ADD_INSN1(ret, line, invokeblock, new_callinfo(iseq, 0, FIX2INT(argc), flag, keywords, FALSE));
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-
-        iseq->body->access_outer_variables = TRUE;
-	break;
-      }
-      case NODE_LVAR:{
-	if (!popped) {
-	    ID id = node->nd_vid;
-	    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_GETLOCAL(ret, line, idx, get_lvar_level(iseq));
-	}
-	break;
-      }
-      case NODE_DVAR:{
-	int lv, idx, ls;
-	debugi("nd_vid", node->nd_vid);
-	if (!popped) {
-	    idx = get_dyna_var_idx(iseq, node->nd_vid, &lv, &ls);
-	    if (idx < 0) {
-		COMPILE_ERROR(ERROR_ARGS "unknown dvar (%"PRIsVALUE")",
-			      rb_id2str(node->nd_vid));
-		goto ng;
-	    }
-	    ADD_GETLOCAL(ret, line, ls - idx, lv);
-	}
-	break;
-      }
-      case NODE_GVAR:{
-	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 (!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(iseq)->option->inline_const_cache) {
-	    LABEL *lend = NEW_LABEL(line);
-	    int ic_index = body->is_size++;
-
-            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, line, putnil);
-            ADD_INSN1(ret, line, putobject, Qtrue);
-            ADD_INSN1(ret, line, getconstant, ID2SYM(node->nd_vid));
-	}
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_CVAR:{
-	if (!popped) {
-	    ADD_INSN1(ret, line, getclassvariable,
-		      ID2SYM(node->nd_vid));
-	}
-	break;
-      }
-      case NODE_NTH_REF:{
-        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 (!popped) {
-	    ADD_INSN2(ret, line, getspecial, INT2FIX(1) /* '~' */,
-		      INT2FIX(0x01 | (node->nd_nth << 1)));
-	}
-	break;
-      }
-      case NODE_MATCH:
-      case NODE_MATCH2:
-      case NODE_MATCH3:{
-	DECL_ANCHOR(recv);
-	DECL_ANCHOR(val);
-
-	INIT_ANCHOR(recv);
-	INIT_ANCHOR(val);
-	switch (nd_type(node)) {
-	  case NODE_MATCH:
-	    ADD_INSN1(recv, line, putobject, node->nd_lit);
-	    ADD_INSN2(val, line, getspecial, INT2FIX(0),
-		      INT2FIX(0));
-	    break;
-	  case NODE_MATCH2:
-	    CHECK(COMPILE(recv, "receiver", node->nd_recv));
-	    CHECK(COMPILE(val, "value", node->nd_value));
-	    break;
-	  case NODE_MATCH3:
-	    CHECK(COMPILE(recv, "receiver", node->nd_value));
-	    CHECK(COMPILE(val, "value", node->nd_recv));
-	    break;
-	}
-
-        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 (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_LIT:{
-	debugp_param("lit", node->nd_lit);
-	if (!popped) {
-	    ADD_INSN1(ret, line, putobject, node->nd_lit);
-	}
-	break;
-      }
-      case NODE_STR:{
-	debugp_param("nd_lit", 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 (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_XSTR:{
-	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 (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_DXSTR:{
-	ADD_CALL_RECEIVER(ret, line);
-	compile_dstr(iseq, ret, node);
-	ADD_CALL(ret, line, idBackquote, INT2FIX(1));
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_EVSTR:
-	CHECK(compile_evstr(iseq, ret, node->nd_body, popped));
-	break;
-      case NODE_DREGX:{
-	compile_dregx(iseq, ret, node);
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      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_INSN2(ret, line, once, block_iseq, INT2FIX(ic_index));
-        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)block_iseq);
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_ARGSCAT:{
-	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:{
-	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:{
-	CHECK(COMPILE(ret, "splat", node->nd_head));
-	ADD_INSN1(ret, line, splatarray, Qtrue);
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_DEFN:{
-        ID mid = node->nd_mid;
-	const rb_iseq_t *method_iseq = NEW_ISEQ(node->nd_defn,
-                                                rb_id2str(mid),
-						ISEQ_TYPE_METHOD, line);
-
-	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 (!popped) {
-            ADD_INSN1(ret, line, putobject, ID2SYM(mid));
-	}
-
-	break;
-      }
-      case NODE_DEFS:{
-        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, 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 (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_VALIAS:{
-	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 (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_UNDEF:{
-	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 (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_CLASS:{
-	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:{
-        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;
-	const rb_iseq_t *singleton_class = NEW_ISEQ(node->nd_body, rb_fstring_lit("singleton class"),
-						    ISEQ_TYPE_CLASS, line);
-
-	CHECK(COMPILE(ret, "sclass#recv", node->nd_recv));
-	ADD_INSN (ret, line, putnil);
-	CONST_ID(singletonclass, "singletonclass");
-	ADD_INSN3(ret, line, defineclass,
-		  ID2SYM(singletonclass), singleton_class,
-		  INT2FIX(VM_DEFINECLASS_TYPE_SINGLETON_CLASS));
-        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)singleton_class);
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_COLON2:{
-	if (rb_is_const_id(node->nd_mid)) {
-	    /* constant */
-	    LABEL *lend = NEW_LABEL(line);
-	    int ic_index = body->is_size++;
-
-	    DECL_ANCHOR(pref);
-	    DECL_ANCHOR(body);
-
-	    INIT_ANCHOR(pref);
-	    INIT_ANCHOR(body);
-	    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, line, putnil);
-		}
-
-		ADD_SEQ(ret, body);
-
-		if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
-                    ADD_INSN1(ret, line, opt_setinlinecache, INT2FIX(ic_index));
-		    ADD_LABEL(ret, lend);
-		}
-	    }
-	    else {
-		ADD_SEQ(ret, pref);
-		ADD_SEQ(ret, body);
-	    }
-	}
-	else {
-	    /* function call */
-	    ADD_CALL_RECEIVER(ret, line);
-	    CHECK(COMPILE(ret, "colon2#nd_head", node->nd_head));
-	    ADD_CALL(ret, line, node->nd_mid, INT2FIX(1));
-	}
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_COLON3:{
-	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(iseq)->option->inline_const_cache) {
-            ADD_INSN2(ret, line, opt_getinlinecache, lend, INT2FIX(ic_index));
-	    ADD_INSN(ret, line, pop);
-	}
-
-	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(iseq)->option->inline_const_cache) {
-            ADD_INSN1(ret, line, opt_setinlinecache, INT2FIX(ic_index));
-	    ADD_LABEL(ret, lend);
-	}
-
-	if (popped) {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_DOT2:
-      case NODE_DOT3:{
-	int excl = type == NODE_DOT3;
-	VALUE flag = INT2FIX(excl);
-	const NODE *b = node->nd_beg;
-	const NODE *e = node->nd_end;
-        // TODO: Ractor can not use cached Range objects
-	if (0 && 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 {
-	    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(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, 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 (!popped) {
-	    ADD_INSN(ret, line, putself);
-	}
-	break;
-      }
-      case NODE_NIL:{
-	if (!popped) {
-	    ADD_INSN(ret, line, putnil);
-	}
-	break;
-      }
-      case NODE_TRUE:{
-	if (!popped) {
-	    ADD_INSN1(ret, line, putobject, Qtrue);
-	}
-	break;
-      }
-      case NODE_FALSE:{
-	if (!popped) {
-	    ADD_INSN1(ret, line, putobject, Qfalse);
-	}
-	break;
-      }
-      case NODE_ERRINFO:{
-	if (!popped) {
-	    if (body->type == ISEQ_TYPE_RESCUE) {
-		ADD_GETLOCAL(ret, line, LVAR_ERRINFO, 0);
-	    }
-	    else {
-		const rb_iseq_t *ip = iseq;
-		int level = 0;
-		while (ip) {
-		    if (ip->body->type == ISEQ_TYPE_RESCUE) {
-			break;
-		    }
-		    ip = ip->body->parent_iseq;
-		    level++;
-		}
-		if (ip) {
-		    ADD_GETLOCAL(ret, line, LVAR_ERRINFO, level);
-		}
-		else {
-		    ADD_INSN(ret, line, putnil);
-		}
-	    }
-	}
-	break;
-      }
-      case NODE_DEFINED:
-	if (!popped) {
-	    CHECK(compile_defined_expr(iseq, ret, node, Qtrue));
-	}
-	break;
-      case NODE_POSTEXE:{
-	/* 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_INSN2(ret, line, once, once_iseq, INT2FIX(is_index));
-        RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)once_iseq);
-
-	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 (!popped) {
-	    ADD_INSN(ret, line, intern);
-	}
-	else {
-	    ADD_INSN(ret, line, pop);
-	}
-	break;
-      }
-      case NODE_ATTRASGN:{
-	DECL_ANCHOR(recv);
-	DECL_ANCHOR(args);
-	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, NULL);
-	CHECK(!NIL_P(argc));
-
-        int asgnflag = COMPILE_RECV(recv, "recv", node);
-        CHECK(asgnflag != -1);
-        flag |= (unsigned int)asgnflag;
-
-	debugp_param("argc", argc);
-	debugp_param("nd_mid", ID2SYM(mid));
-
-	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) {
-		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, line, setn, FIXNUM_INC(argc, 1));
-	    }
-	}
-	else {
-	    ADD_SEQ(ret, recv);
-	    ADD_SEQ(ret, args);
-	}
-	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_LAMBDA:{
-	/* compile same as lambda{...} */
-	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_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:
-	UNKNOWN_NODE("iseq_compile_each", node, COMPILE_NG);
-      ng:
-	debug_node_end();
-	return COMPILE_NG;
-    }
-
-    debug_node_end();
-    return COMPILE_OK;
-}
-
-/***************************/
-/* instruction information */
-/***************************/
-
-static int
-insn_data_length(INSN *iobj)
-{
-    return insn_len(iobj->insn_id);
-}
-
-static int
-calc_sp_depth(int depth, INSN *insn)
-{
-    return comptime_insn_stack_increase(depth, insn->insn_id, insn->operands);
-}
-
-static VALUE
-opobj_inspect(VALUE obj)
-{
-    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_sprintf("%-20s ", insn_name(iobj->insn_id));
-
-    if (iobj->operands) {
-	const char *types = insn_op_types(iobj->insn_id);
-	int j;
-
-	for (j = 0; types[j]; j++) {
-	    char type = types[j];
-
-	    switch (type) {
-	      case TS_OFFSET:	/* label(destination position) */
-		{
-		    LABEL *lobj = (LABEL *)OPERAND_AT(iobj, j);
-		    rb_str_catf(str, LABEL_FORMAT, lobj->label_no);
-		    break;
-		}
-		break;
-	      case TS_ISEQ:	/* iseq */
-		{
-		    rb_iseq_t *iseq = (rb_iseq_t *)OPERAND_AT(iobj, j);
-		    VALUE val = Qnil;
-		    if (0 && iseq) { /* TODO: invalidate now */
-			val = (VALUE)iseq;
-		    }
-		    rb_str_concat(str, opobj_inspect(val));
-		}
-		break;
-	      case TS_LINDEX:
-	      case TS_NUM:	/* ulong */
-	      case TS_VALUE:	/* VALUE */
-		{
-		    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, 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_CALLDATA: /* we store these as call infos at compile time */
-		{
-                    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_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);
-	      }
-	    }
-	    if (types[j + 1]) {
-		rb_str_cat2(str, ", ");
-	    }
-	}
-    }
-    return str;
-}
-
-static void
-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;
-    LABEL *lobj;
-    VALUE str;
-
-    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(%4u)\n", pos, StringValueCStr(str), iobj->insn_info.line_no);
-		pos += insn_data_length(iobj);
-		break;
-	    }
-	  case ISEQ_ELEMENT_LABEL:
-	    {
-		lobj = (LABEL *)link;
-		printf(LABEL_FORMAT" [sp: %d]%s\n", lobj->label_no, lobj->sp,
-		       dest == lobj ? " <---" : "");
-		break;
-	    }
-	  case ISEQ_ELEMENT_TRACE:
-	    {
-		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 ? adjust->label->label_no : -1);
-		break;
-	    }
-	  default:
-	    /* ignore */
-	    rb_raise(rb_eSyntaxError, "dump_disasm_list error: %ld\n", FIX2LONG(link->type));
-	}
-	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_capa(VM_INSTRUCTION_SIZE);
-    int i;
-    for (i = 0; i < VM_INSTRUCTION_SIZE; i++) {
-	rb_ary_push(ary, rb_fstring_cstr(insn_name(i)));
-    }
-    return rb_obj_freeze(ary);
-}
-
-static LABEL *
-register_label(rb_iseq_t *iseq, struct st_table *labels_table, VALUE obj)
-{
-    LABEL *label = 0;
-    st_data_t tmp;
-    obj = rb_to_symbol_type(obj);
-
-    if (st_lookup(labels_table, obj, &tmp) == 0) {
-	label = NEW_LABEL(0);
-	st_insert(labels_table, obj, (st_data_t)label);
-    }
-    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"));
-    }
-
-    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 == symNext)   return CATCH_TYPE_NEXT;
-    rb_raise(rb_eSyntaxError, "invalid exception symbol: %+"PRIsVALUE, sym);
-    return 0;
-}
-
-static int
-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++) {
-	const rb_iseq_t *eiseq;
-	VALUE v, type;
-	LABEL *lstart, *lend, *lcont;
-	unsigned int sp;
-
-	v = rb_to_array_type(RARRAY_AREF(exception, i));
-	if (RARRAY_LEN(v) != 6) {
-	    rb_raise(rb_eSyntaxError, "wrong exception entry");
-	}
-        type = get_exception_sym2type(RARRAY_AREF(v, 0));
-        if (RARRAY_AREF(v, 1) == Qnil) {
-	    eiseq = NULL;
-	}
-	else {
-            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;
-	}
-
-	lcont->sp = sp;
-
-	ADD_CATCH_ENTRY(type, lstart, lend, eiseq, lcont);
-
-	RB_GC_GUARD(v);
-    }
-    return COMPILE_OK;
-}
-
-static struct st_table *
-insn_make_insn_table(void)
-{
-    struct st_table *table;
-    int i;
-    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);
-    }
-
-    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("mid")));
-	VALUE vflag = rb_hash_aref(op, ID2SYM(rb_intern("flag")));
-	VALUE vorig_argc = rb_hash_aref(op, ID2SYM(rb_intern("orig_argc")));
-	VALUE vkw_arg = rb_hash_aref(op, ID2SYM(rb_intern("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(#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_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
-			 VALUE body, VALUE labels_wrapper)
-{
-    /* 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
-     */
-    static struct st_table *insn_table;
-
-    if (insn_table == 0) {
-	insn_table = insn_make_insn_table();
-    }
-
-    for (i=0; i<len; i++) {
-        VALUE obj = RARRAY_AREF(body, i);
-
-	if (SYMBOL_P(obj)) {
-	    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 (RB_TYPE_P(obj, T_ARRAY)) {
-	    VALUE *argv = 0;
-	    int argc = RARRAY_LENINT(obj) - 1;
-	    st_data_t insn_id;
-	    VALUE insn;
-
-	    insn = (argc < 0) ? Qnil : RARRAY_AREF(obj, 0);
-	    if (st_lookup(insn_table, (st_data_t)insn, &insn_id) == 0) {
-		/* TODO: exception */
-		COMPILE_ERROR(iseq, line_no,
-			      "unknown instruction: %+"PRIsVALUE, insn);
-		ret = COMPILE_NG;
-		break;
-	    }
-
-	    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_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((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_NUM:
-			(void)NUM2INT(op);
-			argv[j] = op;
-			break;
-		      case TS_VALUE:
-			argv[j] = op;
-			RB_OBJ_WRITTEN(iseq, Qundef, op);
-			break;
-		      case TS_ISEQ:
-			{
-			    if (op != Qnil) {
-				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_ISE:
-                        FL_SET((VALUE)iseq, ISEQ_MARKABLE_ISEQ);
-                        /* fall through */
-		      case TS_IC:
-                      case TS_IVC:  /* inline ivar cache */
-			argv[j] = op;
-			if (NUM2UINT(op) >= iseq->body->is_size) {
-			    iseq->body->is_size = NUM2INT(op) + 1;
-			}
-			break;
-                      case TS_CALLDATA:
-			argv[j] = iseq_build_callinfo_from_hash(iseq, op);
-			break;
-		      case TS_ID:
-			argv[j] = rb_to_symbol_type(op);
-			break;
-		      case TS_CDHASH:
-			{
-			    int i;
-			    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 key = RARRAY_AREF(op, i);
-				VALUE sym = RARRAY_AREF(op, i+1);
-				LABEL *label =
-				  register_label(iseq, labels_table, sym);
-				rb_hash_aset(map, key, (VALUE)label | 1);
-			    }
-			    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((VALUE)insn_id, j));
-		    }
-		}
-	    }
-            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");
-	}
-    }
-    DATA_PTR(labels_wrapper) = 0;
-    validate_labels(iseq, labels_table);
-    if (!ret) return ret;
-    return iseq_setup(iseq, anchor);
-}
-
-#define CHECK_ARRAY(v)   rb_to_array_type(v)
-#define CHECK_SYMBOL(v)  rb_to_symbol_type(v)
-
-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(#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)
-{
-#define SYM(s) ID2SYM(rb_intern(#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("#arg_rest"));
-    DECL_ANCHOR(anchor);
-    INIT_ANCHOR(anchor);
-
-    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 < len; i++) {
-	VALUE lv = RARRAY_AREF(locals, i);
-
-	if (sym_arg_rest == lv) {
-	    tbl[i] = 0;
-	}
-	else {
-	    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
-    }
-
-    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;
-    }
-
-    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_from_ary_exception(iseq, labels_table, exception);
-
-    /* body */
-    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, const rb_iseq_t *iseq)
-{
-    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
-	       ) {
-	    unsigned int i;
-
-	    for (i = 0; i < body->local_table_size; i++) {
-		if (body->local_table[i] == id) {
-		    return 1;
-		}
-	    }
-	    iseq = body->parent_iseq;
-	    body = iseq->body;
-	}
-    }
-    return 0;
-}
-
-int
-rb_local_defined(ID id, const rb_iseq_t *iseq)
-{
-    if (iseq) {
-	unsigned int i;
-	const struct rb_iseq_constant_body *const body = iseq->body->local_iseq->body;
-
-	for (i=0; i<body->local_table_size; i++) {
-	    if (body->local_table[i] == id) {
-		return 1;
-	    }
-	}
-    }
-    return 0;
-}
-
-static int
-caller_location(VALUE *path, VALUE *realpath)
-{
-    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;
-    }
-}
-
-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 2
-#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) {
-        for (int i=0; i<len; i++) fprintf(stderr, "%c", name[i]);
-        fprintf(stderr, "!!\n");
-    }
-
-    const struct rb_builtin_function *table = GET_VM()->builtin_function_table;
-    if (table == NULL) rb_bug("%s: table is not provided.", RUBY_FUNCTION_NAME_STRING);
-    if (strncmp(table[i].name, name, len) != 0) {
-        rb_bug("%s: index (%d) mismatch (expect %s but %s).", RUBY_FUNCTION_NAME_STRING, 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:
-                FL_SET(iseqv, ISEQ_MARKABLE_ISEQ);
-                /* fall through */
-              case TS_IC:
-              case TS_IVC:
-                {
-                    VALUE op = ibf_load_small_value(load, &reading_pos);
-                    code[code_index] = (VALUE)&is_entries[op];
-                }
-                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;
-}
-
-/* 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 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);
-
-#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, 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 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->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)
-{
-    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
deleted file mode 100644
index 4100fac082..0000000000
--- a/complex.c
+++ /dev/null
@@ -1,2477 +0,0 @@
-/*
-  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/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 "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_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 fun1(n) \
-inline static VALUE \
-f_##n(VALUE x)\
-{\
-    return rb_funcall(x, id_##n, 0);\
-}
-
-#define fun2(n) \
-inline static VALUE \
-f_##n(VALUE x, VALUE y)\
-{\
-    return rb_funcall(x, id_##n, 1, y);\
-}
-
-#define PRESERVE_SIGNEDZERO
-
-inline static VALUE
-f_add(VALUE x, VALUE y)
-{
-    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, '+', 1, y);
-}
-
-inline static VALUE
-f_div(VALUE x, VALUE y)
-{
-    if (FIXNUM_P(y) && FIX2LONG(y) == 1)
-	return x;
-    return rb_funcall(x, '/', 1, y);
-}
-
-inline static int
-f_gt_p(VALUE x, VALUE 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));
-}
-
-inline static VALUE
-f_mul(VALUE x, VALUE 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;
-    }
-    return rb_funcall(x, '*', 1, y);
-}
-
-inline static VALUE
-f_sub(VALUE x, VALUE y)
-{
-    if (FIXNUM_ZERO_P(y) &&
-        LIKELY(rb_method_basic_definition_p(CLASS_OF(x), idMINUS))) {
-	return x;
-    }
-    return rb_funcall(x, '-', 1, y);
-}
-
-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);
-}
-
-static VALUE numeric_arg(VALUE self);
-static VALUE float_arg(VALUE self);
-
-inline static VALUE
-f_arg(VALUE x)
-{
-    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);
-}
-
-inline static VALUE
-f_numerator(VALUE x)
-{
-    if (RB_TYPE_P(x, T_RATIONAL)) {
-        return RRATIONAL(x)->num;
-    }
-    if (RB_FLOAT_TYPE_P(x)) {
-        return rb_float_numerator(x);
-    }
-    return 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_negate(VALUE x)
-{
-    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);
-}
-
-static bool nucomp_real_p(VALUE self);
-
-static inline bool
-f_real_p(VALUE x)
-{
-    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_to_i(VALUE x)
-{
-    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
-f_to_f(VALUE x)
-{
-    if (RB_TYPE_P(x, T_STRING))
-	return DBL2NUM(rb_str_to_dbl(x, 0));
-    return rb_funcall(x, id_to_f, 0);
-}
-
-fun1(to_r)
-
-inline static int
-f_eqeq_p(VALUE x, VALUE y)
-{
-    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);
-}
-
-fun2(expt)
-fun2(fdiv)
-
-static VALUE
-f_quo(VALUE x, VALUE y)
-{
-    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 int
-f_negative_p(VALUE x)
-{
-    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
-f_infinite_p(VALUE x)
-{
-    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) (!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 = RCOMPLEX(x)
-
-#define get_dat2(x,y) \
-    struct RComplex *adat = RCOMPLEX(x), *bdat = RCOMPLEX(y)
-
-inline static VALUE
-nucomp_s_new_internal(VALUE klass, VALUE real, VALUE imag)
-{
-    NEWOBJ_OF(obj, struct RComplex, klass, T_COMPLEX | (RGENGC_WB_PROTECTED_COMPLEX ? FL_WB_PROTECTED : 0));
-
-    RCOMPLEX_SET_REAL(obj, real);
-    RCOMPLEX_SET_IMAG(obj, imag);
-    OBJ_FREEZE_RAW((VALUE)obj);
-
-    return (VALUE)obj;
-}
-
-static VALUE
-nucomp_s_alloc(VALUE klass)
-{
-    return nucomp_s_new_internal(klass, ZERO, ZERO);
-}
-
-inline static VALUE
-f_complex_new_bang1(VALUE klass, VALUE 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(!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
-static int canonicalization = 0;
-
-RUBY_FUNC_EXPORTED void
-nucomp_canonicalization(int f)
-{
-    canonicalization = f;
-}
-#else
-#define canonicalization 0
-#endif
-
-inline static void
-nucomp_real_check(VALUE num)
-{
-    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_eTypeError, "not a real");
-    }
-}
-
-inline static VALUE
-nucomp_s_canonicalize_internal(VALUE klass, VALUE real, VALUE imag)
-{
-    int complex_r, complex_i;
-#ifdef CANONICALIZATION_FOR_MATHN
-    if (k_exact_zero_p(imag) && canonicalization)
-	return real;
-#endif
-    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 (!complex_r) {
-	get_dat1(imag);
-
-	return nucomp_s_new_internal(klass,
-				     f_sub(real, dat->imag),
-				     f_add(ZERO, dat->real));
-    }
-    else if (!complex_i) {
-	get_dat1(real);
-
-	return nucomp_s_new_internal(klass,
-				     dat->real,
-				     f_add(dat->imag, imag));
-    }
-    else {
-	get_dat2(real, imag);
-
-	return nucomp_s_new_internal(klass,
-				     f_sub(adat->real, bdat->imag),
-				     f_add(adat->imag, bdat->real));
-    }
-}
-
-/*
- * 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)
-{
-    VALUE real, imag;
-
-    switch (rb_scan_args(argc, argv, "11", &real, &imag)) {
-      case 1:
-	nucomp_real_check(real);
-	imag = ZERO;
-	break;
-      default:
-	nucomp_real_check(real);
-	nucomp_real_check(imag);
-	break;
-    }
-
-    return nucomp_s_canonicalize_internal(klass, real, imag);
-}
-
-inline static VALUE
-f_complex_new2(VALUE klass, VALUE x, VALUE y)
-{
-    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)
-{
-    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) \
-inline static VALUE \
-m_##n##_bang(VALUE x)\
-{\
-    return rb_math_##n(x);\
-}
-
-imp1(cos)
-imp1(cosh)
-imp1(exp)
-
-static VALUE
-m_log_bang(VALUE x)
-{
-    return rb_math_log(1, &x);
-}
-
-imp1(sin)
-imp1(sinh)
-
-static VALUE
-m_cos(VALUE x)
-{
-    if (!RB_TYPE_P(x, T_COMPLEX))
-	return m_cos_bang(x);
-    {
-	get_dat1(x);
-	return f_complex_new2(rb_cComplex,
-			      f_mul(m_cos_bang(dat->real),
-				    m_cosh_bang(dat->imag)),
-			      f_mul(f_negate(m_sin_bang(dat->real)),
-				    m_sinh_bang(dat->imag)));
-    }
-}
-
-static VALUE
-m_sin(VALUE x)
-{
-    if (!RB_TYPE_P(x, T_COMPLEX))
-	return m_sin_bang(x);
-    {
-	get_dat1(x);
-	return f_complex_new2(rb_cComplex,
-			      f_mul(m_sin_bang(dat->real),
-				    m_cosh_bang(dat->imag)),
-			      f_mul(m_cos_bang(dat->real),
-				    m_sinh_bang(dat->imag)));
-    }
-}
-
-static VALUE
-f_complex_polar(VALUE klass, VALUE x, VALUE y)
-{
-    assert(!RB_TYPE_P(x, T_COMPLEX));
-    assert(!RB_TYPE_P(y, T_COMPLEX));
-    if (f_zero_p(x) || f_zero_p(y)) {
-	if (canonicalization) return x;
-	return nucomp_s_new_internal(klass, x, RFLOAT_0);
-    }
-    if (RB_FLOAT_TYPE_P(y)) {
-	const double arg = RFLOAT_VALUE(y);
-	if (arg == M_PI) {
-	    x = f_negate(x);
-	    if (canonicalization) return 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);
-	    if (canonicalization && imag == 0.0) return x;
-	    y = DBL2NUM(imag);
-	}
-	else {
-            const double ax = sin(arg), ay = cos(arg);
-            y = f_mul(x, DBL2NUM(ax));
-            x = f_mul(x, DBL2NUM(ay));
-	    if (canonicalization && f_zero_p(y)) return x;
-	}
-	return nucomp_s_new_internal(klass, x, 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(int argc, VALUE *argv, VALUE klass)
-{
-    VALUE abs, arg;
-
-    switch (rb_scan_args(argc, argv, "11", &abs, &arg)) {
-      case 1:
-	nucomp_real_check(abs);
-	if (canonicalization) return 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);
-}
-
-/*
- * 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;
-}
-
-/*
- * 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;
-}
-
-/*
- * 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));
-}
-
-/*
- * 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 (RB_TYPE_P(other, T_COMPLEX)) {
-	VALUE real, imag;
-
-	get_dat2(self, other);
-
-	real = f_add(adat->real, bdat->real);
-	imag = f_add(adat->imag, bdat->imag);
-
-	return f_complex_new2(CLASS_OF(self), real, imag);
-    }
-    if (k_numeric_p(other) && f_real_p(other)) {
-	get_dat1(self);
-
-	return f_complex_new2(CLASS_OF(self),
-			      f_add(dat->real, other), dat->imag);
-    }
-    return rb_num_coerce_bin(self, 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 (RB_TYPE_P(other, T_COMPLEX)) {
-	VALUE real, imag;
-
-	get_dat2(self, other);
-
-	real = f_sub(adat->real, bdat->real);
-	imag = f_sub(adat->imag, bdat->imag);
-
-	return f_complex_new2(CLASS_OF(self), real, imag);
-    }
-    if (k_numeric_p(other) && f_real_p(other)) {
-	get_dat1(self);
-
-	return f_complex_new2(CLASS_OF(self),
-			      f_sub(dat->real, other), dat->imag);
-    }
-    return rb_num_coerce_bin(self, other, '-');
-}
-
-static VALUE
-safe_mul(VALUE a, VALUE b, int az, int bz)
-{
-    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);
-
-        comp_mul(adat->real, adat->imag, bdat->real, bdat->imag, &real, &imag);
-
-	return f_complex_new2(CLASS_OF(self), real, imag);
-    }
-    if (k_numeric_p(other) && f_real_p(other)) {
-	get_dat1(self);
-
-	return f_complex_new2(CLASS_OF(self),
-			      f_mul(dat->real, other),
-			      f_mul(dat->imag, other));
-    }
-    return rb_num_coerce_bin(self, other, '*');
-}
-
-inline static VALUE
-f_divide(VALUE self, VALUE other,
-	 VALUE (*func)(VALUE, VALUE), ID id)
-{
-    if (RB_TYPE_P(other, T_COMPLEX)) {
-        VALUE r, n, x, y;
-	int flo;
-	get_dat2(self, other);
-
-	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);
-	}
-	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);
-        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, id);
-}
-
-#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)
-{
-    return f_divide(self, other, f_fdiv, id_fdiv);
-}
-
-inline static VALUE
-f_reciprocal(VALUE x)
-{
-    return f_quo(ONE, x);
-}
-
-/*
- * 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_numeric_p(other) && k_exact_zero_p(other))
-	return f_complex_new_bang1(CLASS_OF(self), ONE);
-
-    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 (RB_TYPE_P(other, T_COMPLEX)) {
-	VALUE r, theta, nr, ntheta;
-
-	get_dat1(other);
-
-	r = f_abs(self);
-	theta = f_arg(self);
-
-	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 (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);
-	}
-    }
-    if (k_numeric_p(other) && f_real_p(other)) {
-	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);
-
-	return f_complex_polar(CLASS_OF(self), f_expt(r, 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_eqeq_p(VALUE self, VALUE other)
-{
-    if (RB_TYPE_P(other, T_COMPLEX)) {
-	get_dat2(self, other);
-
-	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_eqeq_p(dat->real, other) && f_zero_p(dat->imag));
-    }
-    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);
-
-    rb_raise(rb_eTypeError, "%"PRIsVALUE" can't be coerced into %"PRIsVALUE,
-	     rb_obj_class(other), rb_obj_class(self));
-    return Qnil;
-}
-
-/*
- * 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);
-
-    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)
-{
-    get_dat1(self);
-    return f_add(f_mul(dat->real, dat->real),
-		 f_mul(dat->imag, dat->imag));
-}
-
-/*
- * 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 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)
-{
-    get_dat1(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));
-}
-
-/*
- * 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));
-}
-
-/*
- * 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;
-}
-
-/*
- * call-seq:
- *    cmp.denominator  ->  integer
- *
- * Returns the denominator (lcm of both denominator - real and imag).
- *
- * See numerator.
- */
-static VALUE
-nucomp_denominator(VALUE self)
-{
-    get_dat1(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)
-{
-    VALUE cd;
-
-    get_dat1(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))),
-			  f_mul(f_numerator(dat->imag),
-				f_div(cd, f_denominator(dat->imag))));
-}
-
-/* :nodoc: */
-static VALUE
-nucomp_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 ST2FIX(v);
-}
-
-/* :nodoc: */
-static VALUE
-nucomp_eql_p(VALUE self, VALUE 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_eqeq_p(self, other));
-
-    }
-    return Qfalse;
-}
-
-inline static int
-f_signbit(VALUE x)
-{
-    if (RB_FLOAT_TYPE_P(x)) {
-	double f = RFLOAT_VALUE(x);
-	return !isnan(f) && signbit(f);
-    }
-    return f_negative_p(x);
-}
-
-inline static int
-f_tpositive_p(VALUE x)
-{
-    return !f_signbit(x);
-}
-
-static VALUE
-f_format(VALUE self, VALUE (*func)(VALUE))
-{
-    VALUE s;
-    int impos;
-
-    get_dat1(self);
-
-    impos = f_tpositive_p(dat->imag);
-
-    s = (*func)(dat->real);
-    rb_str_cat2(s, !impos ? "-" : "+");
-
-    rb_str_concat(s, (*func)(f_abs(dat->imag)));
-    if (!rb_isdigit(RSTRING_PTR(s)[RSTRING_LEN(s) - 1]))
-	rb_str_cat2(s, "*");
-    rb_str_cat2(s, "i");
-
-    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 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, 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)
-{
-    VALUE a;
-    get_dat1(self);
-
-    a = rb_assoc_new(dat->real, dat->imag);
-    rb_copy_generic_ivar(a, self);
-    return a;
-}
-
-/* :nodoc: */
-static VALUE
-nucomp_marshal_load(VALUE self, VALUE 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;
-}
-
-/* --- */
-
-VALUE
-rb_complex_raw(VALUE x, VALUE y)
-{
-    return nucomp_s_new_internal(rb_cComplex, x, y);
-}
-
-VALUE
-rb_complex_new(VALUE x, VALUE y)
-{
-    return nucomp_s_canonicalize_internal(rb_cComplex, x, y);
-}
-
-VALUE
-rb_complex_new_polar(VALUE x, VALUE y)
-{
-    return f_complex_polar(rb_cComplex, x, y);
-}
-
-VALUE
-rb_complex_polar(VALUE x, VALUE y)
-{
-    return rb_complex_new_polar(x, y);
-}
-
-VALUE
-rb_Complex(VALUE x, VALUE y)
-{
-    VALUE a[2];
-    a[0] = x;
-    a[1] = 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_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_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_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);
-}
-
-inline static int
-issign(int c)
-{
-    return (c == '-' || c == '+');
-}
-
-static int
-read_sign(const char **s,
-	  char **b)
-{
-    int sign = '?';
-
-    if (issign(**s)) {
-	sign = **b = **s;
-	(*s)++;
-	(*b)++;
-    }
-    return sign;
-}
-
-inline static int
-isdecimal(int c)
-{
-    return isdigit((unsigned char)c);
-}
-
-static int
-read_digits(const char **s, int strict,
-	    char **b)
-{
-    int us = 1;
-
-    if (!isdecimal(**s))
-	return 0;
-
-    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;
-}
-
-inline static int
-islettere(int c)
-{
-    return (c == 'e' || c == 'E');
-}
-
-static int
-read_num(const char **s, int strict,
-	 char **b)
-{
-    if (**s != '.') {
-	if (!read_digits(s, strict, b))
-	    return 0;
-    }
-
-    if (**s == '.') {
-	**b = **s;
-	(*s)++;
-	(*b)++;
-	if (!read_digits(s, strict, b)) {
-	    (*b)--;
-	    return 0;
-	}
-    }
-
-    if (islettere(**s)) {
-	**b = **s;
-	(*s)++;
-	(*b)++;
-	read_sign(s, b);
-	if (!read_digits(s, strict, b)) {
-	    (*b)--;
-	    return 0;
-	}
-    }
-    return 1;
-}
-
-inline static int
-read_den(const char **s, int strict,
-	 char **b)
-{
-    if (!read_digits(s, strict, b))
-	return 0;
-    return 1;
-}
-
-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;
-}
-
-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;
-}
-
-inline static int
-isimagunit(int c)
-{
-    return (c == 'i' || c == 'I' ||
-	    c == 'j' || c == 'J');
-}
-
-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);
-}
-
-static int
-read_comp(const char **s, int strict,
-	  VALUE *ret, char **b)
-{
-    char *bb;
-    int sign;
-    VALUE num, num2;
-
-    bb = *b;
-
-    sign = read_sign(s, b);
-
-    if (isimagunit(**s)) {
-	(*s)++;
-	num = INT2FIX((sign == '-') ? -1 : + 1);
-	*ret = rb_complex_new2(ZERO, num);
-	return 1; /* e.g. "i" */
-    }
-
-    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);
-
-    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@-" */
-	}
-	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" */
-	    }
-	    **b = '\0';
-	    num2 = str2num(bb);
-	}
-	if (!isimagunit(**s)) {
-	    *ret = rb_complex_new2(num, ZERO);
-	    return 0; /* e.g. "1+3x" */
-	}
-	(*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" */
-    }
-}
-
-inline static void
-skip_ws(const char **s)
-{
-    while (isspace((unsigned char)**s))
-	(*s)++;
-}
-
-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_strict(VALUE self, int raise)
-{
-    char *s;
-    VALUE num;
-
-    rb_must_asciicompat(self);
-
-    s = RSTRING_PTR(self);
-
-    if (!s || memchr(s, '\0', RSTRING_LEN(self))) {
-        if (!raise) return Qnil;
-	rb_raise(rb_eArgError, "string contains null byte");
-    }
-
-    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
-string_to_c(VALUE self)
-{
-    char *s;
-    VALUE num;
-
-    rb_must_asciicompat(self);
-
-    s = RSTRING_PTR(self);
-
-    if (s && s[RSTRING_LEN(self)]) {
-	rb_str_modify(self);
-	s = RSTRING_PTR(self);
-	s[RSTRING_LEN(self)] = '\0';
-    }
-
-    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;
-    }
-
-    if (RB_TYPE_P(a2, T_STRING)) {
-	a2 = string_to_c_strict(a2, raise);
-        if (NIL_P(a2)) return Qnil;
-    }
-
-    if (RB_TYPE_P(a1, T_COMPLEX)) {
-	{
-	    get_dat1(a1);
-
-	    if (k_exact_zero_p(dat->imag))
-		a1 = dat->real;
-	}
-    }
-
-    if (RB_TYPE_P(a2, T_COMPLEX)) {
-	{
-	    get_dat1(a2);
-
-	    if (k_exact_zero_p(dat->imag))
-		a2 = dat->real;
-	}
-    }
-
-    if (RB_TYPE_P(a1, T_COMPLEX)) {
-	if (a2 == Qundef || (k_exact_zero_p(a2)))
-	    return a1;
-    }
-
-    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)) &&
-	    (!f_real_p(a1) || !f_real_p(a2)))
-	    return f_add(a1,
-			 f_mul(a2,
-			       f_complex_new_bang2(rb_cComplex, ZERO, ONE)));
-    }
-
-    {
-        int argc;
-	VALUE argv2[2];
-	argv2[0] = a1;
-        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);
-}
-
-/*
- * 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 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)
-{
-    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)
-{
-    VALUE compat;
-#undef rb_intern
-#define rb_intern(str) rb_intern_const(str)
-
-    id_abs = rb_intern("abs");
-    id_arg = rb_intern("arg");
-    id_denominator = rb_intern("denominator");
-    id_numerator = rb_intern("numerator");
-    id_real_p = rb_intern("real?");
-    id_i_real = rb_intern("@real");
-    id_i_imag = rb_intern("@image"); /* @image, not @imag */
-    id_finite_p = rb_intern("finite?");
-    id_infinite_p = rb_intern("infinite?");
-    id_rationalize = rb_intern("rationalize");
-    id_PI = rb_intern("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");
-
-    rb_undef_method(CLASS_OF(rb_cComplex), "new");
-
-    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, -1);
-
-    rb_define_global_function("Complex", nucomp_f_complex, -1);
-
-    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");
-
-    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, "-@", 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, "**", rb_complex_pow, 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", 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", 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", rb_complex_conjugate, 0);
-    rb_define_method(rb_cComplex, "conj", rb_complex_conjugate, 0);
-
-    rb_define_method(rb_cComplex, "real?", nucomp_false, 0);
-
-    rb_define_method(rb_cComplex, "numerator", nucomp_numerator, 0);
-    rb_define_method(rb_cComplex, "denominator", nucomp_denominator, 0);
-
-    rb_define_method(rb_cComplex, "hash", nucomp_hash, 0);
-    rb_define_method(rb_cComplex, "eql?", nucomp_eql_p, 1);
-
-    rb_define_method(rb_cComplex, "to_s", nucomp_to_s, 0);
-    rb_define_method(rb_cComplex, "inspect", nucomp_inspect, 0);
-
-    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);
-
-    rb_define_method(rb_cString, "to_c", string_to_c, 0);
-
-    rb_define_private_method(CLASS_OF(rb_cComplex), "convert", nucomp_s_convert, -1);
-
-    /* --- */
-
-    rb_define_method(rb_cNumeric, "real", numeric_real, 0);
-    rb_define_method(rb_cNumeric, "imaginary", numeric_imag, 0);
-    rb_define_method(rb_cNumeric, "imag", numeric_imag, 0);
-    rb_define_method(rb_cNumeric, "abs2", numeric_abs2, 0);
-    rb_define_method(rb_cNumeric, "arg", numeric_arg, 0);
-    rb_define_method(rb_cNumeric, "angle", numeric_arg, 0);
-    rb_define_method(rb_cNumeric, "phase", numeric_arg, 0);
-    rb_define_method(rb_cNumeric, "rectangular", numeric_rect, 0);
-    rb_define_method(rb_cNumeric, "rect", numeric_rect, 0);
-    rb_define_method(rb_cNumeric, "polar", numeric_polar, 0);
-    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));
-
-#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.dj b/config.dj
new file mode 100644
index 0000000000..8ad3883380
--- /dev/null
+++ b/config.dj
@@ -0,0 +1,36 @@
+#define THREAD 1
+#define HAVE_DIRENT_H 1
+#define HAVE_UNISTD_H 1
+#define HAVE_LIMITS_H 1
+#define HAVE_SYS_FILE_H 1
+#define HAVE_PWD_H 1
+#define HAVE_SYS_TIME_H 1
+#define HAVE_SYS_TIMES_H 1
+#define HAVE_SYS_PARAM_H 1
+#define HAVE_SYS_WAIT_H 1
+#define HAVE_STRING_H 1
+#define HAVE_UTIME_H 1
+#define HAVE_MEMORY_H 1
+#define HAVE_ST_BLKSIZE 1
+#define HAVE_ST_RDEV 1
+#define GETGROUPS_T gid_t
+#define RETSIGTYPE void
+#define HAVE_ALLOCA 1
+#define vfork fork
+#define HAVE_FMOD 1
+#define HAVE_RANDOM 1
+#define HAVE_WAITPID 1
+#define HAVE_GETCWD 1
+#define HAVE_TRUNCATE 1
+#define HAVE_CHSIZE 1
+#define HAVE_TIMES 1
+#define HAVE_UTIMES 1
+/* #define HAVE_FCNTL 1 */
+/* #define HAVE_SETITIMER 1 */
+#define HAVE_GETGROUPS 1
+#define HAVE_SIGPROCMASK 1
+#define FILE_COUNT _cnt
+#define DLEXT ".so"
+#define RUBY_LIB ";/usr/local/lib/ruby;."
+#define RUBY_ARCHLIB "/usr/local/lib/ruby/i386-djgpp"
+#define RUBY_PLATFORM "i386-djgpp"
diff --git a/config.guess b/config.guess
new file mode 100644
index 0000000000..cb7bb288b3
--- /dev/null
+++ b/config.guess
@@ -0,0 +1,869 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright (C) 1992, 93, 94, 95, 96, 1997 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
+# (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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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.
+
+# Written by Per Bothner <bothner@cygnus.com>.
+# The master version of this file is at the FSF in /home/gd/gnu/lib.
+#
+# 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 system type (host/target name).
+#
+# Only a few systems have been added to this list; please add others
+# (but try to keep the structure clean).
+#
+
+# Modified for Human68k by K.Okabe 1997.07.09
+# Last change: 1997.07.09
+
+case "$KSH_VERSION" in
+*X6*)
+  echo m68k-sharp-human
+  exit 0 ;;
+*)
+  ;;
+esac
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 8/24/94.)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+trap 'rm -f dummy.c dummy.o dummy; exit 1' 1 2 15
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+    alpha:OSF1:*:*)
+	if test $UNAME_RELEASE = "V4.0"; then
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+	fi
+	# 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.
+	cat <<EOF >dummy.s
+	.globl main
+	.ent main
+main:
+	.frame \$30,0,\$26,0
+	.prologue 0
+	.long 0x47e03d80 # implver $0
+	lda \$2,259
+	.long 0x47e20c21 # amask $2,$1
+	srl \$1,8,\$2
+	sll \$2,2,\$2
+	sll \$0,3,\$0
+	addl \$1,\$0,\$0
+	addl \$2,\$0,\$0
+	ret \$31,(\$26),1
+	.end main
+EOF
+	${CC-cc} dummy.s -o dummy 2>/dev/null
+	if test "$?" = 0 ; then
+		./dummy
+		case "$?" in
+			7)
+				UNAME_MACHINE="alpha"
+				;;
+			15)
+				UNAME_MACHINE="alphaev5"
+				;;
+			14)
+				UNAME_MACHINE="alphaev56"
+				;;
+			10)
+				UNAME_MACHINE="alphapca56"
+				;;
+			16)
+				UNAME_MACHINE="alphaev6"
+				;;
+		esac
+	fi
+	rm -f dummy.s dummy
+	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[VTX]//' | tr [[A-Z]] [[a-z]]`
+	exit 0 ;;
+    21064:Windows_NT:50:3)
+	echo alpha-dec-winnt3.5
+	exit 0 ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-cbm-sysv4
+	exit 0;;
+    amiga:NetBSD:*:*)
+      echo m68k-cbm-netbsd${UNAME_RELEASE}
+      exit 0 ;;
+    amiga:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    arc64:OpenBSD:*:*)
+	echo mips64el-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    arc:OpenBSD:*:*)
+	echo mipsel-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    hkmips:OpenBSD:*:*)
+	echo mips-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    pmax:OpenBSD:*:*)
+	echo mipsel-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    sgi:OpenBSD:*:*)
+	echo mips-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    wgrisc:OpenBSD:*:*)
+	echo mipsel-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix${UNAME_RELEASE}
+	exit 0;;
+    arm32:NetBSD:*:*)
+	echo arm-unknown-netbsd`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+	exit 0 ;;
+    SR2?01:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit 0;;
+    Pyramid*:OSx*:*:*|MIS*: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 0 ;;
+    NILE:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit 0 ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    i86pc:SunOS:5.*:*)
+	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    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 0 ;;
+    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 ${UNAME_RELEASE}|sed -e 's/-/_/'`
+	exit 0 ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos${UNAME_RELEASE}
+	exit 0 ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(head -1 /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 0 ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos${UNAME_RELEASE}
+	exit 0 ;;
+    atari*:NetBSD:*:*)
+	echo m68k-atari-netbsd${UNAME_RELEASE}
+	exit 0 ;;
+    atari*:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    sun3*:NetBSD:*:*)
+	echo m68k-sun-netbsd${UNAME_RELEASE}
+	exit 0 ;;
+    sun3*:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mac68k:NetBSD:*:*)
+	echo m68k-apple-netbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mac68k:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvme68k:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    mvme88k:OpenBSD:*:*)
+	echo m88k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten${UNAME_RELEASE}
+	exit 0 ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit 0 ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix${UNAME_RELEASE}
+	exit 0 ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix${UNAME_RELEASE}
+	exit 0 ;;
+    2020:CLIX:*:*)
+	echo clipper-intergraph-clix${UNAME_RELEASE}
+	exit 0 ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	sed 's/^	//' << EOF >dummy.c
+	int main (argc, argv) int argc; char **argv; {
+	#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
+	${CC-cc} dummy.c -o dummy \
+	  && ./dummy `echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` \
+	  && rm dummy.c dummy && exit 0
+	rm -f dummy.c dummy
+	echo mips-mips-riscos${UNAME_RELEASE}
+	exit 0 ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit 0 ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit 0 ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit 0 ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit 0 ;;
+    AViiON:dgux:*:*)
+        # DG/UX returns AViiON for all architectures
+        UNAME_PROCESSOR=`/usr/bin/uname -p`
+        if [ $UNAME_PROCESSOR = mc88100 -o $UNAME_PROCESSOR = mc88110 ] ; then
+	if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx \
+	     -o ${TARGET_BINARY_INTERFACE}x = x ] ; then
+		echo m88k-dg-dgux${UNAME_RELEASE}
+	else
+		echo m88k-dg-dguxbcs${UNAME_RELEASE}
+	fi
+        else echo i586-dg-dgux${UNAME_RELEASE}
+        fi
+ 	exit 0 ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit 0 ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit 0 ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit 0 ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit 0 ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+	exit 0 ;;
+    ????????: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 0 ;;              # Note that: echo "'`uname -s`'" gives 'AIX '
+    i?86:AIX:*:*)
+	echo i386-ibm-aix
+	exit 0 ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		sed 's/^		//' << EOF >dummy.c
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		${CC-cc} dummy.c -o dummy && ./dummy && rm dummy.c dummy && exit 0
+		rm -f dummy.c dummy
+		echo rs6000-ibm-aix3.2.5
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit 0 ;;
+    *:AIX:*:4)
+	if /usr/sbin/lsattr -EHl proc0 | grep POWER >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=4.${UNAME_RELEASE}
+	fi
+	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+	exit 0 ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit 0 ;;
+    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+	echo romp-ibm-bsd4.4
+	exit 0 ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC NetBSD and
+	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
+	exit 0 ;;                           # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit 0 ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit 0 ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit 0 ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit 0 ;;
+    9000/[3478]??:HP-UX:*:*)
+	case "${UNAME_MACHINE}" in
+	    9000/31? )            HP_ARCH=m68000 ;;
+	    9000/[34]?? )         HP_ARCH=m68k ;;
+	    9000/7?? | 9000/8?[1679] ) HP_ARCH=hppa1.1 ;;
+	    9000/8?? )            HP_ARCH=hppa1.0 ;;
+	esac
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+	exit 0 ;;
+    3050*:HI-UX:*:*)
+	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-cc} dummy.c -o dummy && ./dummy && rm dummy.c dummy && exit 0
+	rm -f dummy.c dummy
+	echo unknown-hitachi-hiuxwe2
+	exit 0 ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+	echo hppa1.1-hp-bsd
+	exit 0 ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit 0 ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+	echo hppa1.1-hp-osf
+	exit 0 ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit 0 ;;
+    i?86:OSF1:*:*)
+	if [ -x /usr/sbin/sysversion ] ; then
+	    echo ${UNAME_MACHINE}-unknown-osf1mk
+	else
+	    echo ${UNAME_MACHINE}-unknown-osf1
+	fi
+	exit 0 ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit 0 ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+        exit 0 ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+        exit 0 ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+        exit 0 ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+        exit 0 ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+        exit 0 ;;
+    CRAY*X-MP:*:*:*)
+	echo xmp-cray-unicos
+        exit 0 ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos${UNAME_RELEASE}
+	exit 0 ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
+	exit 0 ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos${UNAME_RELEASE}
+	exit 0 ;;
+    CRAY-2:*:*:*)
+	echo cray2-cray-unicos
+        exit 0 ;;
+    F300:UNIX_System_V:*:*)
+        FUJITSU_SYS=`uname -p | tr [A-Z] [a-z] | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+        echo "f300-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+        exit 0 ;;
+    F301:UNIX_System_V:*:*)
+       echo f301-fujitsu-uxpv`echo $UNAME_RELEASE | sed 's/ .*//'`
+       exit 0 ;;
+    hp3[0-9][05]:NetBSD:*:*)
+	echo m68k-hp-netbsd${UNAME_RELEASE}
+	exit 0 ;;
+    hp300:OpenBSD:*:*)
+	echo m68k-unknown-openbsd${UNAME_RELEASE}
+	exit 0 ;;
+    i?86:BSD/386:*:* | *:BSD/OS:*:*)
+	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+	exit 0 ;;
+    *:FreeBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit 0 ;;
+    *:NetBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-netbsd`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+	exit 0 ;;
+    *:OpenBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-openbsd`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+	exit 0 ;;
+    *:*:*BOW*:*)
+	echo i386-pc-bow
+	exit 0 ;;
+    i*:CYGWIN*:*)
+	echo i386-pc-cygwin32
+	exit 0 ;;
+    i*:MINGW*:*)
+	echo i386-pc-mingw32
+	exit 0 ;;
+    p*:CYGWIN*:*)
+	echo powerpcle-unknown-cygwin32
+	exit 0 ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit 0 ;;
+    *:GNU:*:*)
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	exit 0 ;;
+    *:Linux:*:*)
+	# The BFD linker knows what the default object file format is, so
+	# first see if it will tell us.
+	ld_help_string=`ld --help 2>&1`
+	ld_supported_emulations=`echo $ld_help_string \
+			 | sed -ne '/supported emulations:/!d
+				    s/[ 	][ 	]*/ /g
+				    s/.*supported emulations: *//
+				    s/ .*//
+				    p'`
+        case "$ld_supported_emulations" in
+	  i?86linux)  echo "${UNAME_MACHINE}-pc-linux-aout"      ; exit 0 ;;
+	  i?86coff)   echo "${UNAME_MACHINE}-pc-linux-coff"      ; exit 0 ;;
+	  sparclinux) echo "${UNAME_MACHINE}-unknown-linux-aout" ; exit 0 ;;
+	  m68klinux)  echo "${UNAME_MACHINE}-unknown-linux-aout" ; exit 0 ;;
+	  elf32ppc)   echo "powerpc-unknown-linux"               ; exit 0 ;;
+	esac
+
+	if test "${UNAME_MACHINE}" = "alpha" ; then
+		sed 's/^	//'  <<EOF >dummy.s
+		.globl main
+		.ent main
+	main:
+		.frame \$30,0,\$26,0
+		.prologue 0
+		.long 0x47e03d80 # implver $0
+		lda \$2,259
+		.long 0x47e20c21 # amask $2,$1
+		srl \$1,8,\$2
+		sll \$2,2,\$2
+		sll \$0,3,\$0
+		addl \$1,\$0,\$0
+		addl \$2,\$0,\$0
+		ret \$31,(\$26),1
+		.end main
+EOF
+		LIBC=""
+		${CC-cc} dummy.s -o dummy 2>/dev/null
+		if test "$?" = 0 ; then
+			./dummy
+			case "$?" in
+			7)
+				UNAME_MACHINE="alpha"
+				;;
+			15)
+				UNAME_MACHINE="alphaev5"
+				;;
+			14)
+				UNAME_MACHINE="alphaev56"
+				;;
+			10)
+				UNAME_MACHINE="alphapca56"
+				;;
+			16)
+				UNAME_MACHINE="alphaev6"
+				;;
+			esac	
+
+			objdump --private-headers dummy | \
+			  grep ld.so.1 > /dev/null
+			if test "$?" = 0 ; then
+				LIBC="-libc1"
+			fi
+		fi	
+		rm -f dummy.s dummy
+		echo ${UNAME_MACHINE}-unknown-linux${LIBC} ; exit 0
+	elif test "${UNAME_MACHINE}" = "mips" ; then
+	  cat >dummy.c <<EOF
+main(argc, argv)
+     int argc;
+     char *argv[];
+{
+#ifdef __MIPSEB__
+  printf ("%s-unknown-linux\n", argv[1]);
+#endif
+#ifdef __MIPSEL__
+  printf ("%sel-unknown-linux\n", argv[1]);
+#endif
+  return 0;
+}
+EOF
+	  ${CC-cc} dummy.c -o dummy 2>/dev/null && ./dummy "${UNAME_MACHINE}" && rm dummy.c dummy && exit 0
+	  rm -f dummy.c dummy
+	else
+	  case "${UNAME_MACHINE}" in
+	  i?86)
+	    VENDOR=pc;
+	    ;;
+	  *)
+	    VENDOR=unknown;
+	    ;;
+	  esac
+	  echo ${UNAME_MACHINE}-${VENDOR}-linux
+	  exit 0
+	fi ;;
+# 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.
+    i?86:DYNIX/ptx:4*:*)
+	echo i386-sequent-sysv4
+	exit 0 ;;
+    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 0 ;;
+    i?86:*:4.*:* | i?86:SYSTEM_V:4.*:*)
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo ${UNAME_MACHINE}-univel-sysv${UNAME_RELEASE}
+	else
+		echo ${UNAME_MACHINE}-pc-sysv${UNAME_RELEASE}
+	fi
+	exit 0 ;;
+    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|egrep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|egrep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|egrep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+	else
+		echo ${UNAME_MACHINE}-pc-sysv32
+	fi
+	exit 0 ;;
+    pc:*:*:*)
+        # uname -m prints for DJGPP always 'pc', but it prints nothing about
+        # the processor, so we play safe by assuming i386.
+	echo i386-pc-msdosdjgpp
+        exit 0 ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit 0 ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit 0 ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv${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 0 ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit 0 ;;
+    M68*:*:R3V[567]*:*)
+	test -r /sysV68 && echo 'm68k-motorola-sysv' && exit 0 ;;
+    3[34]??:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 4850:*: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${OS_REL} && exit 0
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && echo i586-ncr-sysv4.3${OS_REL} && exit 0 ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+          && echo i486-ncr-sysv4 && exit 0 ;;
+    m68*:LynxOS:2.*:*)
+	echo m68k-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit 0 ;;
+    i?86:LynxOS:2.*:*)
+	echo i386-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    rs6000:LynxOS:2.*:* | PowerPC:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos${UNAME_RELEASE}
+	exit 0 ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv${UNAME_RELEASE}
+	exit 0 ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit 0 ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		echo ${UNAME_MACHINE}-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit 0 ;;
+    PENTIUM:CPunix:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+                           # says <Richard.M.Bartel@ccMail.Census.GOV>
+        echo i586-unisys-sysv4
+        exit 0 ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit 0 ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit 0 ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux${UNAME_RELEASE}
+	exit 0 ;;
+    X680[02346]0:Human68k:*:*)
+	echo m68k-sharp-human
+	exit 0 ;;
+    news*:NEWS-OS:*:6*)
+	echo mips-sony-newsos6
+ 	exit 0 ;;
+    R3000:*System_V*:*:* | R4000:UNIX_SYSV:*:*)
+	if [ -d /usr/nec ]; then
+	        echo mips-nec-sysv${UNAME_RELEASE}
+	else
+	        echo mips-unknown-sysv${UNAME_RELEASE}
+	fi
+        exit 0 ;;
+esac
+
+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
+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"); 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`;
+  printf ("%s-next-nextstep%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)
+  printf ("vax-dec-bsd\n"); exit (0);
+#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-cc} dummy.c -o dummy 2>/dev/null && ./dummy && rm dummy.c dummy && exit 0
+rm -f dummy.c dummy
+
+# Apollos put the system type in the environment.
+
+test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit 0; }
+
+# 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 0 ;;
+    c2*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit 0 ;;
+    c34*)
+	echo c34-convex-bsd
+	exit 0 ;;
+    c38*)
+	echo c38-convex-bsd
+	exit 0 ;;
+    c4*)
+	echo c4-convex-bsd
+	exit 0 ;;
+    esac
+fi
+
+#echo '(Unable to guess system type)' 1>&2
+
+exit 1
diff --git a/config.sub b/config.sub
new file mode 100644
index 0000000000..d37810352f
--- /dev/null
+++ b/config.sub
@@ -0,0 +1,960 @@
+#! /bin/sh
+# Configuration validation subroutine script, version 1.1.
+#   Copyright (C) 1991, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
+# 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., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, 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.
+
+# 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.
+
+if [ x$1 = x ]
+then
+	echo Configuration name missing. 1>&2
+	echo "Usage: $0 CPU-MFR-OPSYS" 1>&2
+	echo "or     $0 ALIAS" 1>&2
+	echo where ALIAS is a recognized configuration type. 1>&2
+	exit 1
+fi
+
+# First pass through any local machine types.
+case $1 in
+	*local*)
+		echo $1
+		exit 0
+		;;
+	*)
+	;;
+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 $maybe_os in
+  linux-gnu*)
+    os=-$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)
+		os=
+		basic_machine=$1
+		;;
+	-hiux*)
+		os=-hiuxwe2
+		;;
+	-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/'`
+		;;
+	-sco*)
+		os=-sco3.2v2
+		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
+		;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+	# Recognize the basic CPU types without company name.
+	# Some are omitted here because they have special meanings below.
+	tahoe | i860 | m32r | m68k | m68000 | m88k | ns32k | arc | arm \
+		| arme[lb] | pyramid | mn10200 | mn10300 \
+		| tron | a29k | 580 | i960 | h8300 | hppa | hppa1.0 | hppa1.1 \
+		| alpha | alphaev5 | alphaev56 | we32k | ns16k | clipper \
+		| i370 | sh | powerpc | powerpcle | 1750a | dsp16xx | pdp11 \
+		| mips64 | mipsel | mips64el | mips64orion | mips64orionel \
+		| mipstx39 | mipstx39el \
+		| sparc | sparclet | sparclite | sparc64 | v850)
+		basic_machine=$basic_machine-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[3456]86)
+	  basic_machine=$basic_machine-pc
+	  ;;
+	i[3456]86-TOWNS*)
+	  basic_machine=`echo $basic_machine | sed -e 's/-TOWNS.*/-TOWNS/'`
+	  ;;
+	# 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.
+	vax-* | tahoe-* | i[3456]86-* | i860-* | m32r-* | m68k-* | m68000-* \
+	      | m88k-* | sparc-* | ns32k-* | fx80-* | arc-* | arm-* | c[123]* \
+	      | mips-* | pyramid-* | tron-* | a29k-* | romp-* | rs6000-* \
+	      | power-* | none-* | 580-* | cray2-* | h8300-* | i960-* \
+	      | xmp-* | ymp-* | hppa-* | hppa1.0-* | hppa1.1-* \
+	      | alpha-* | alphaev5-* | alphaev56-* | we32k-* | cydra-* \
+	      | ns16k-* | pn-* | np1-* | xps100-* | clipper-* | orion-* \
+	      | sparclite-* | pdp11-* | sh-* | powerpc-* | powerpcle-* \
+	      | sparc64-* | mips64-* | mipsel-* \
+	      | mips64el-* | mips64orion-* | mips64orionel-*  \
+	      | mipstx39-* | mipstx39el-* \
+	      | f301-*)
+		;;
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		basic_machine=m68000-att
+		;;
+	3b*)
+		basic_machine=we32k-att
+		;;
+	alliant | fx80)
+		basic_machine=fx80-alliant
+		;;
+	altos | altos3068)
+		basic_machine=m68k-altos
+		;;
+	am29k)
+		basic_machine=a29k-none
+		os=-bsd
+		;;
+	amdahl)
+		basic_machine=580-amdahl
+		os=-sysv
+		;;
+	amiga | amiga-*)
+		basic_machine=m68k-cbm
+		;;
+	amigaos | amigados)
+		basic_machine=m68k-cbm
+		os=-amigaos
+		;;
+	amigaunix | amix)
+		basic_machine=m68k-cbm
+		os=-sysv4
+		;;
+	apollo68)
+		basic_machine=m68k-apollo
+		os=-sysv
+		;;
+	aux)
+		basic_machine=m68k-apple
+		os=-aux
+		;;
+	balance)
+		basic_machine=ns32k-sequent
+		os=-dynix
+		;;
+	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 | ymp)
+		basic_machine=ymp-cray
+		os=-unicos
+		;;
+	cray2)
+		basic_machine=cray2-cray
+		os=-unicos
+		;;
+	[ctj]90-cray)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
+	crds | unos)
+		basic_machine=m68k-crds
+		;;
+	da30 | da30-*)
+		basic_machine=m68k-da30
+		;;
+	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+		basic_machine=mips-dec
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		basic_machine=m68k-motorola
+		;;
+	delta88)
+		basic_machine=m88k-motorola
+		os=-sysv3
+		;;
+	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
+		;;
+	fx2800)
+		basic_machine=i860-alliant
+		;;
+	genix)
+		basic_machine=ns32k-ns
+		;;
+	gmicro)
+		basic_machine=tron-gmicro
+		os=-sysv
+		;;
+	h3050r* | hiux*)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	h8300hms)
+		basic_machine=h8300-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
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		basic_machine=m68000-hp
+		;;
+	hp9k3[2-9][0-9])
+		basic_machine=m68k-hp
+		;;
+	hp9k7[0-9][0-9] | hp7[0-9][0-9] | hp9k8[0-9]7 | hp8[0-9]7)
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hppa-next)
+		os=-nextstep3
+		;;
+	i370-ibm* | ibm*)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
+# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
+	i[3456]86v32)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv32
+		;;
+	i[3456]86v4*)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv4
+		;;
+	i[3456]86v)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv
+		;;
+	i[3456]86sol2)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-solaris2
+		;;
+	iris | iris4d)
+		basic_machine=mips-sgi
+		case $os in
+		    -irix*)
+			;;
+		    *)
+			os=-irix4
+			;;
+		esac
+		;;
+	isi68 | isi)
+		basic_machine=m68k-isi
+		os=-sysv
+		;;
+	m88k-omron*)
+		basic_machine=m88k-omron
+		;;
+	magnum | m3230)
+		basic_machine=mips-mips
+		os=-sysv
+		;;
+	merlin)
+		basic_machine=ns32k-utek
+		os=-sysv
+		;;
+	miniframe)
+		basic_machine=m68000-convergent
+		;;
+	mipsel*-linux*)
+		basic_machine=mipsel-unknown
+		os=-linux
+		;;
+	mips*-linux*)
+		basic_machine=mips-unknown
+		os=-linux
+		;;
+	mips3*-*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+		;;
+	mips3*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+		;;
+	ncr3000)
+		basic_machine=i486-ncr
+		os=-sysv4
+		;;
+	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
+		;;
+	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
+		;;
+	np1)
+		basic_machine=np1-gould
+		;;
+	pa-hitachi)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	paragon)
+		basic_machine=i860-intel
+		os=-osf
+		;;
+	pbd)
+		basic_machine=sparc-tti
+		;;
+	pbb)
+		basic_machine=m68k-tti
+		;;
+        pc532 | pc532-*)
+		basic_machine=ns32k-pc532
+		;;
+	pentium | p5)
+		basic_machine=i586-intel
+		;;
+	pentiumpro | p6)
+		basic_machine=i686-intel
+		;;
+	pentium-* | p5-*)
+		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumpro-* | p6-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	k5)
+		# We don't have specific support for AMD's K5 yet, so just call it a Pentium
+		basic_machine=i586-amd
+		;;
+	nexen)
+		# We don't have specific support for Nexgen yet, so just call it a Pentium
+		basic_machine=i586-nexgen
+		;;
+	pn)
+		basic_machine=pn-gould
+		;;
+	power)	basic_machine=rs6000-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 $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ps2)
+		basic_machine=i386-ibm
+		;;
+	rm[46]00)
+		basic_machine=mips-siemens
+		;;
+	rtpc | rtpc-*)
+		basic_machine=romp-ibm
+		;;
+	sequent)
+		basic_machine=i386-sequent
+		;;
+	sh)
+		basic_machine=sh-hitachi
+		os=-hms
+		;;
+	sps7)
+		basic_machine=m68k-bull
+		os=-sysv2
+		;;
+	spur)
+		basic_machine=spur-unknown
+		;;
+	sun2)
+		basic_machine=m68000-sun
+		;;
+	sun2os3)
+		basic_machine=m68000-sun
+		os=-sunos3
+		;;
+	sun2os4)
+		basic_machine=m68000-sun
+		os=-sunos4
+		;;
+	sun3os3)
+		basic_machine=m68k-sun
+		os=-sunos3
+		;;
+	sun3os4)
+		basic_machine=m68k-sun
+		os=-sunos4
+		;;
+	sun4os3)
+		basic_machine=sparc-sun
+		os=-sunos3
+		;;
+	sun4os4)
+		basic_machine=sparc-sun
+		os=-sunos4
+		;;
+	sun4sol2)
+		basic_machine=sparc-sun
+		os=-solaris2
+		;;
+	sun3 | sun3-*)
+		basic_machine=m68k-sun
+		;;
+	sun4)
+		basic_machine=sparc-sun
+		;;
+	sun386 | sun386i | roadrunner)
+		basic_machine=i386-sun
+		;;
+	symmetry)
+		basic_machine=i386-sequent
+		os=-dynix
+		;;
+	tx39)
+		basic_machine=mipstx39-unknown
+		;;
+	tx39el)
+		basic_machine=mipstx39el-unknown
+		;;
+	tower | tower-32)
+		basic_machine=m68k-ncr
+		;;
+	udi29k)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	ultra3)
+		basic_machine=a29k-nyu
+		os=-sym1
+		;;
+	vaxv)
+		basic_machine=vax-dec
+		os=-sysv
+		;;
+	vms)
+		basic_machine=vax-dec
+		os=-vms
+		;;
+	vpp*|vx|vx-*)
+               basic_machine=f301-fujitsu
+               ;;
+	vxworks960)
+		basic_machine=i960-wrs
+		os=-vxworks
+		;;
+	vxworks68)
+		basic_machine=m68k-wrs
+		os=-vxworks
+		;;
+	vxworks29k)
+		basic_machine=a29k-wrs
+		os=-vxworks
+		;;
+	xmp)
+		basic_machine=xmp-cray
+		os=-unicos
+		;;
+        xps | xps100)
+		basic_machine=xps100-honeywell
+		;;
+	none)
+		basic_machine=none-none
+		os=-none
+		;;
+
+# Here we handle the default manufacturer of certain CPU types.  It is in
+# some cases the only manufacturer, in others, it is the most popular.
+	mips)
+		if [ x$os = x-linux ]; then
+			basic_machine=mips-unknown
+		else
+			basic_machine=mips-mips
+		fi
+		;;
+	romp)
+		basic_machine=romp-ibm
+		;;
+	rs6000)
+		basic_machine=rs6000-ibm
+		;;
+	vax)
+		basic_machine=vax-dec
+		;;
+	pdp11)
+		basic_machine=pdp11-dec
+		;;
+	we32k)
+		basic_machine=we32k-att
+		;;
+	sparc)
+		basic_machine=sparc-sun
+		;;
+        cydra)
+		basic_machine=cydra-cydrome
+		;;
+	orion)
+		basic_machine=orion-highlevel
+		;;
+	orion105)
+		basic_machine=clipper-highlevel
+		;;
+	*)
+		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 $basic_machine | sed 's/commodore.*/cbm/'`
+		;;
+	human)
+		basic_machine=m68k-sharp
+		os=-human
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$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* | -netbsd* | -openbsd* | -freebsd* | -riscix* \
+	      | -lynxos* | -bosx* | -nextstep* | -cxux* | -aout* | -elf* \
+	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -cygwin32* | -pe* | -psos* | -moss* | -proelf* \
+	      | -linux* | -bow*)
+	# Remember, each alternative MUST END IN *, to match a version number.
+		;;
+	-sunos5*)
+		os=`echo $os | sed -e 's|sunos5|solaris2|'`
+		;;
+	-sunos6*)
+		os=`echo $os | sed -e 's|sunos6|solaris3|'`
+		;;
+	-osfrose*)
+		os=-osfrose
+		;;
+	-osf*)
+		os=-osf
+		;;
+	-utek*)
+		os=-bsd
+		;;
+	-dynix*)
+		os=-bsd
+		;;
+	-acis*)
+		os=-aos
+		;;
+	-ctix* | -uts*)
+		os=-sysv
+		;;
+	-ns2 )
+	        os=-nextstep2
+		;;
+	# Preserve the version number of sinix5.
+	-sinix5.*)
+		os=`echo $os | sed -e 's|sinix|sysv|'`
+		;;
+	-sinix*)
+		os=-sysv4
+		;;
+	-triton*)
+		os=-sysv3
+		;;
+	-oss*)
+		os=-sysv3
+		;;
+	-svr4)
+		os=-sysv4
+		;;
+	-svr3)
+		os=-sysv3
+		;;
+	-sysvr4)
+		os=-sysv4
+		;;
+	# This must come after -sysvr4.
+	-sysv*)
+		;;
+	-xenix)
+		os=-xenix
+		;;
+	-human)
+		;;
+	-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
+	*-acorn)
+		os=-riscix1.2
+		;;
+	arm*-semi)
+		os=-aout
+		;;
+        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
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=-sysv3
+		;;
+	sparc-* | *-sun)
+		os=-sunos4.1.1
+		;;
+	*-ibm)
+		os=-aix
+		;;
+	*-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
+		;;
+	f301-fujitsu)
+		os=-uxpv
+		;;
+	*)
+		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
+				;;
+			-hpux*)
+				vendor=hp
+				;;
+			-hiux*)
+				vendor=hitachi
+				;;
+			-unos*)
+				vendor=crds
+				;;
+			-dgux*)
+				vendor=dg
+				;;
+			-luna*)
+				vendor=omron
+				;;
+			-genix*)
+				vendor=ns
+				;;
+			-mvs*)
+				vendor=ibm
+				;;
+			-ptx*)
+				vendor=sequent
+				;;
+			-vxsim* | -vxworks*)
+				vendor=wrs
+				;;
+			-aux*)
+				vendor=apple
+				;;
+		esac
+		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+		;;
+esac
+
+echo $basic_machine$os
diff --git a/configure b/configure
new file mode 100644
index 0000000000..afd3fac15c
--- /dev/null
+++ b/configure
@@ -0,0 +1,4100 @@
+#! /bin/sh
+
+# Guess values for system-dependent variables and create Makefiles.
+# Generated automatically using autoconf version 2.12 
+# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+
+# Defaults:
+ac_help=
+ac_default_prefix=/usr/local
+# Any additions from configure.in:
+ac_help="$ac_help
+--without-gcc             never use gcc"
+ac_help="$ac_help
+--disable-thread          never use user-level thread"
+ac_help="$ac_help
+--enable-fat-binary       build a NeXT Multi Architecture Binary. "
+ac_help="$ac_help
+--with-dln-a-out          use dln_a_out if possible"
+ac_help="$ac_help
+--with-static-linked-ext  link external modules statically"
+
+# Initialize some variables set by options.
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+build=NONE
+cache_file=./config.cache
+exec_prefix=NONE
+host=NONE
+no_create=
+nonopt=NONE
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+target=NONE
+verbose=
+x_includes=NONE
+x_libraries=NONE
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+# Initialize some other variables.
+subdirs=
+MFLAGS= MAKEFLAGS=
+# Maximum number of lines to put in a shell here document.
+ac_max_here_lines=12
+
+ac_prev=
+for ac_option
+do
+
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval "$ac_prev=\$ac_option"
+    ac_prev=
+    continue
+  fi
+
+  case "$ac_option" in
+  -*=*) ac_optarg=`echo "$ac_option" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
+  *) ac_optarg= ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case "$ac_option" in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir="$ac_optarg" ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build="$ac_optarg" ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file="$ac_optarg" ;;
+
+  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir="$ac_optarg" ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`echo $ac_option|sed -e 's/-*disable-//'`
+    # Reject names that are not valid shell variable names.
+    if test -n "`echo $ac_feature| sed 's/[-a-zA-Z0-9_]//g'`"; then
+      { echo "configure: error: $ac_feature: invalid feature name" 1>&2; exit 1; }
+    fi
+    ac_feature=`echo $ac_feature| sed 's/-/_/g'`
+    eval "enable_${ac_feature}=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`echo $ac_option|sed -e 's/-*enable-//' -e 's/=.*//'`
+    # Reject names that are not valid shell variable names.
+    if test -n "`echo $ac_feature| sed 's/[-_a-zA-Z0-9]//g'`"; then
+      { echo "configure: error: $ac_feature: invalid feature name" 1>&2; exit 1; }
+    fi
+    ac_feature=`echo $ac_feature| sed 's/-/_/g'`
+    case "$ac_option" in
+      *=*) ;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_${ac_feature}='$ac_optarg'" ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix="$ac_optarg" ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he)
+    # Omit some internal or obsolete options to make the list less imposing.
+    # This message is too long to be a string in the A/UX 3.1 sh.
+    cat << EOF
+Usage: configure [options] [host]
+Options: [defaults in brackets after descriptions]
+Configuration:
+  --cache-file=FILE       cache test results in FILE
+  --help                  print this message
+  --no-create             do not create output files
+  --quiet, --silent       do not print \`checking...' messages
+  --version               print the version of autoconf that created configure
+Directory and file names:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [same as prefix]
+  --bindir=DIR            user executables in DIR [EPREFIX/bin]
+  --sbindir=DIR           system admin executables in DIR [EPREFIX/sbin]
+  --libexecdir=DIR        program executables in DIR [EPREFIX/libexec]
+  --datadir=DIR           read-only architecture-independent data in DIR
+                          [PREFIX/share]
+  --sysconfdir=DIR        read-only single-machine data in DIR [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data in DIR
+                          [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data in DIR [PREFIX/var]
+  --libdir=DIR            object code libraries in DIR [EPREFIX/lib]
+  --includedir=DIR        C header files in DIR [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc in DIR [/usr/include]
+  --infodir=DIR           info documentation in DIR [PREFIX/info]
+  --mandir=DIR            man documentation in DIR [PREFIX/man]
+  --srcdir=DIR            find the sources in DIR [configure dir or ..]
+  --program-prefix=PREFIX prepend PREFIX to installed program names
+  --program-suffix=SUFFIX append SUFFIX to installed program names
+  --program-transform-name=PROGRAM
+                          run sed PROGRAM on installed program names
+EOF
+    cat << EOF
+Host type:
+  --build=BUILD           configure for building on BUILD [BUILD=HOST]
+  --host=HOST             configure for HOST [guessed]
+  --target=TARGET         configure for TARGET [TARGET=HOST]
+Features and packages:
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --x-includes=DIR        X include files are in DIR
+  --x-libraries=DIR       X library files are in DIR
+EOF
+    if test -n "$ac_help"; then
+      echo "--enable and --with options recognized:$ac_help"
+    fi
+    exit 0 ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host="$ac_optarg" ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir="$ac_optarg" ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir="$ac_optarg" ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir="$ac_optarg" ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir="$ac_optarg" ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    localstatedir="$ac_optarg" ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir="$ac_optarg" ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir="$ac_optarg" ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix="$ac_optarg" ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix="$ac_optarg" ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix="$ac_optarg" ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name="$ac_optarg" ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir="$ac_optarg" ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir="$ac_optarg" ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site="$ac_optarg" ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir="$ac_optarg" ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir="$ac_optarg" ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target="$ac_optarg" ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers)
+    echo "configure generated by autoconf version 2.12"
+    exit 0 ;;
+
+  -with-* | --with-*)
+    ac_package=`echo $ac_option|sed -e 's/-*with-//' -e 's/=.*//'`
+    # Reject names that are not valid shell variable names.
+    if test -n "`echo $ac_package| sed 's/[-_a-zA-Z0-9]//g'`"; then
+      { echo "configure: error: $ac_package: invalid package name" 1>&2; exit 1; }
+    fi
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case "$ac_option" in
+      *=*) ;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_${ac_package}='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`echo $ac_option|sed -e 's/-*without-//'`
+    # Reject names that are not valid shell variable names.
+    if test -n "`echo $ac_package| sed 's/[-a-zA-Z0-9_]//g'`"; then
+      { echo "configure: error: $ac_package: invalid package name" 1>&2; exit 1; }
+    fi
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    eval "with_${ac_package}=no" ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes="$ac_optarg" ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries="$ac_optarg" ;;
+
+  -*) { echo "configure: error: $ac_option: invalid option; use --help to show usage" 1>&2; exit 1; }
+    ;;
+
+  *)
+    if test -n "`echo $ac_option| sed 's/[-a-z0-9.]//g'`"; then
+      echo "configure: warning: $ac_option: invalid host type" 1>&2
+    fi
+    if test "x$nonopt" != xNONE; then
+      { echo "configure: error: can only configure for one host and one target at a time" 1>&2; exit 1; }
+    fi
+    nonopt="$ac_option"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  { echo "configure: error: missing argument to --`echo $ac_prev | sed 's/_/-/g'`" 1>&2; exit 1; }
+fi
+
+trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
+
+# File descriptor usage:
+# 0 standard input
+# 1 file creation
+# 2 errors and warnings
+# 3 some systems may open it to /dev/tty
+# 4 used on the Kubota Titan
+# 6 checking for... messages and results
+# 5 compiler messages saved in config.log
+if test "$silent" = yes; then
+  exec 6>/dev/null
+else
+  exec 6>&1
+fi
+exec 5>./config.log
+
+echo "\
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+" 1>&5
+
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Also quote any args containing shell metacharacters.
+ac_configure_args=
+for ac_arg
+do
+  case "$ac_arg" in
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c) ;;
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) ;;
+  *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*)
+  ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+  *) ac_configure_args="$ac_configure_args $ac_arg" ;;
+  esac
+done
+
+# NLS nuisances.
+# Only set these to C if already set.  These must not be set unconditionally
+# because not all systems understand e.g. LANG=C (notably SCO).
+# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
+# Non-C LC_CTYPE values break the ctype check.
+if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
+if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo > confdefs.h
+
+# A filename unique to this package, relative to the directory that
+# configure is in, which we can look for to find out if srcdir is correct.
+ac_unique_file=ruby.h
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_prog=$0
+  ac_confdir=`echo $ac_prog|sed 's%/[^/][^/]*$%%'`
+  test "x$ac_confdir" = "x$ac_prog" && ac_confdir=.
+  srcdir=$ac_confdir
+  if test ! -r $srcdir/$ac_unique_file; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+  if test "$ac_srcdir_defaulted" = yes; then
+    { echo "configure: error: can not find sources in $ac_confdir or .." 1>&2; exit 1; }
+  else
+    { echo "configure: error: can not find sources in $srcdir" 1>&2; exit 1; }
+  fi
+fi
+srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'`
+
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    echo "loading site script $ac_site_file"
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  echo "loading cache $cache_file"
+  . $cache_file
+else
+  echo "creating cache $cache_file"
+  > $cache_file
+fi
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
+  # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
+  if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
+    ac_n= ac_c='
+' ac_t='	'
+  else
+    ac_n=-n ac_c= ac_t=
+  fi
+else
+  ac_n= ac_c='\c' ac_t=
+fi
+
+
+
+# Check whether --with-gcc or --without-gcc was given.
+if test "${with_gcc+set}" = set; then
+  withval="$with_gcc"
+  
+	case $withval in
+	no)	CC=cc
+		without_gcc=yes;;
+	yes)	CC=gcc
+		without_gcc=no;;
+	*)	CC=$withval
+		without_gcc=$withval;;
+	esac
+else
+  without_gcc=no
+fi
+
+if test ! -z "$ac_cv_prog_CC" -a ! -z "$CC" -a "$CC" != "$ac_cv_prog_CC"
+then
+  { echo "configure: error: cached CC is different -- throw away $cache_file
+(it is also a good idea to do 'make clean' before compiling)" 1>&2; exit 1; }
+fi
+
+rb_thread=yes
+# Check whether --enable-thread or --disable-thread was given.
+if test "${enable_thread+set}" = set; then
+  enableval="$enable_thread"
+  
+	rb_thread=$enableval
+
+fi
+
+if test $rb_thread = yes; then
+  cat >> confdefs.h <<\EOF
+#define THREAD 1
+EOF
+
+fi
+
+ac_aux_dir=
+for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do
+  if test -f $ac_dir/install-sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f $ac_dir/install.sh; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  { echo "configure: error: can not find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." 1>&2; exit 1; }
+fi
+ac_config_guess=$ac_aux_dir/config.guess
+ac_config_sub=$ac_aux_dir/config.sub
+ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
+
+
+# Make sure we can run config.sub.
+if $ac_config_sub sun4 >/dev/null 2>&1; then :
+else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+fi
+
+echo $ac_n "checking host system type""... $ac_c" 1>&6
+echo "configure:597: checking host system type" >&5
+
+host_alias=$host
+case "$host_alias" in
+NONE)
+  case $nonopt in
+  NONE)
+    if host_alias=`$ac_config_guess`; then :
+    else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
+    fi ;;
+  *) host_alias=$nonopt ;;
+  esac ;;
+esac
+
+host=`$ac_config_sub $host_alias`
+host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+echo "$ac_t""$host" 1>&6
+
+
+
+fat_binary=no
+# Check whether --enable-fat-binary or --disable-fat-binary was given.
+if test "${enable_fat_binary+set}" = set; then
+  enableval="$enable_fat_binary"
+   fat_binary=$enableval  
+fi
+
+if test "$fat_binary" = yes ; then
+
+    echo $ac_n "checking target architecture ""... $ac_c" 1>&6
+echo "configure:629: checking target architecture " >&5
+
+    if test "$TARGET_ARCHS" = "" ; then
+        if test `/usr/bin/arch` = "m68k" ; then
+            TARGET_ARCHS="m68k i486"
+        else
+            TARGET_ARCHS="m68k `/usr/bin/arch`"
+        fi
+    fi
+    # /usr/lib/arch_tool -archify_list $TARGET_ARCHS
+    for archs in $TARGET_ARCHS 
+    do
+        ARCH_FLAG="$ARCH_FLAG -arch $archs "
+        echo -n " $archs"
+    done
+    cat >> confdefs.h <<\EOF
+#define NEXT_FAT_BINARY  1
+EOF
+
+    echo "."
+fi 
+
+
+if test "$program_transform_name" = s,x,x,; then
+  program_transform_name=
+else
+  # Double any \ or $.  echo might interpret backslashes.
+  cat <<\EOF_SED > conftestsed
+s,\\,\\\\,g; s,\$,$$,g
+EOF_SED
+  program_transform_name="`echo $program_transform_name|sed -f conftestsed`"
+  rm -f conftestsed
+fi
+test "$program_prefix" != NONE &&
+  program_transform_name="s,^,${program_prefix},; $program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+  program_transform_name="s,\$\$,${program_suffix},; $program_transform_name"
+
+# sed with no file args requires a program.
+test "$program_transform_name" = "" && program_transform_name="s,x,x,"
+
+
+# Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:675: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_CC="gcc"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+  echo "$ac_t""$CC" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:704: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  ac_prog_rejected=no
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then
+        ac_prog_rejected=yes
+	continue
+      fi
+      ac_cv_prog_CC="cc"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# -gt 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    set dummy "$ac_dir/$ac_word" "$@"
+    shift
+    ac_cv_prog_CC="$@"
+  fi
+fi
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+  echo "$ac_t""$CC" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+  test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
+fi
+
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
+echo "configure:752: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+cat > conftest.$ac_ext <<EOF
+#line 762 "configure"
+#include "confdefs.h"
+main(){return(0);}
+EOF
+if { (eval echo configure:766: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  ac_cv_prog_cc_works=yes
+  # If we can't run a trivial program, we are probably using a cross compiler.
+  if (./conftest; exit) 2>/dev/null; then
+    ac_cv_prog_cc_cross=no
+  else
+    ac_cv_prog_cc_cross=yes
+  fi
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  ac_cv_prog_cc_works=no
+fi
+rm -fr conftest*
+
+echo "$ac_t""$ac_cv_prog_cc_works" 1>&6
+if test $ac_cv_prog_cc_works = no; then
+  { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
+fi
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
+echo "configure:786: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
+cross_compiling=$ac_cv_prog_cc_cross
+
+echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
+echo "configure:791: checking whether we are using GNU C" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.c <<EOF
+#ifdef __GNUC__
+  yes;
+#endif
+EOF
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:800: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+  ac_cv_prog_gcc=yes
+else
+  ac_cv_prog_gcc=no
+fi
+fi
+
+echo "$ac_t""$ac_cv_prog_gcc" 1>&6
+
+if test $ac_cv_prog_gcc = yes; then
+  GCC=yes
+  ac_test_CFLAGS="${CFLAGS+set}"
+  ac_save_CFLAGS="$CFLAGS"
+  CFLAGS=
+  echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
+echo "configure:815: checking whether ${CC-cc} accepts -g" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  echo 'void f(){}' > conftest.c
+if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
+  ac_cv_prog_cc_g=yes
+else
+  ac_cv_prog_cc_g=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$ac_cv_prog_cc_g" 1>&6
+  if test "$ac_test_CFLAGS" = set; then
+    CFLAGS="$ac_save_CFLAGS"
+  elif test $ac_cv_prog_cc_g = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-O2"
+  fi
+else
+  GCC=
+  test "${CFLAGS+set}" = set || CFLAGS="-g"
+fi
+
+echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
+echo "configure:843: checking how to run the C preprocessor" >&5
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+    # This must be in double quotes, not single quotes, because CPP may get
+  # substituted into the Makefile and "${CC-cc}" will confuse make.
+  CPP="${CC-cc} -E"
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp.
+  cat > conftest.$ac_ext <<EOF
+#line 858 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:864: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP="${CC-cc} -E -traditional-cpp"
+  cat > conftest.$ac_ext <<EOF
+#line 875 "configure"
+#include "confdefs.h"
+#include <assert.h>
+Syntax Error
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:881: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
+if test -z "$ac_err"; then
+  :
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  CPP=/lib/cpp
+fi
+rm -f conftest*
+fi
+rm -f conftest*
+  ac_cv_prog_CPP="$CPP"
+fi
+  CPP="$ac_cv_prog_CPP"
+else
+  ac_cv_prog_CPP="$CPP"
+fi
+echo "$ac_t""$CPP" 1>&6
+
+if test $ac_cv_prog_gcc = yes; then
+    echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
+echo "configure:905: checking whether ${CC-cc} needs -traditional" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+    ac_pattern="Autoconf.*'x'"
+  cat > conftest.$ac_ext <<EOF
+#line 911 "configure"
+#include "confdefs.h"
+#include <sgtty.h>
+Autoconf TIOCGETP
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "$ac_pattern" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_prog_gcc_traditional=yes
+else
+  rm -rf conftest*
+  ac_cv_prog_gcc_traditional=no
+fi
+rm -f conftest*
+
+
+  if test $ac_cv_prog_gcc_traditional = no; then
+    cat > conftest.$ac_ext <<EOF
+#line 929 "configure"
+#include "confdefs.h"
+#include <termio.h>
+Autoconf TCGETA
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "$ac_pattern" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_prog_gcc_traditional=yes
+fi
+rm -f conftest*
+
+  fi
+fi
+
+echo "$ac_t""$ac_cv_prog_gcc_traditional" 1>&6
+  if test $ac_cv_prog_gcc_traditional = yes; then
+    CC="$CC -traditional"
+  fi
+fi
+
+for ac_prog in 'bison -y' byacc
+do
+# Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:955: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_YACC'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$YACC"; then
+  ac_cv_prog_YACC="$YACC" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_YACC="$ac_prog"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+YACC="$ac_cv_prog_YACC"
+if test -n "$YACC"; then
+  echo "$ac_t""$YACC" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+test -n "$YACC" && break
+done
+test -n "$YACC" || YACC="yacc"
+
+# Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:987: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_RANLIB="ranlib"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+  test -z "$ac_cv_prog_RANLIB" && ac_cv_prog_RANLIB=":"
+fi
+fi
+RANLIB="$ac_cv_prog_RANLIB"
+if test -n "$RANLIB"; then
+  echo "$ac_t""$RANLIB" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+
+for ac_prog in ar aal
+do
+# Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
+echo "configure:1019: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_AR="$ac_prog"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+AR="$ac_cv_prog_AR"
+if test -n "$AR"; then
+  echo "$ac_t""$AR" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+test -n "$AR" && break
+done
+test -n "$AR" || AR="ar"
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# ./install, which can be erroneously created by make from ./install.sh.
+echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
+echo "configure:1059: checking for a BSD compatible install" >&5
+if test -z "$INSTALL"; then
+if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+    IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="${IFS}:"
+  for ac_dir in $PATH; do
+    # Account for people who put trailing slashes in PATH elements.
+    case "$ac_dir/" in
+    /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
+    *)
+      # OSF1 and SCO ODT 3.0 have their own names for install.
+      for ac_prog in ginstall installbsd scoinst install; do
+        if test -f $ac_dir/$ac_prog; then
+	  if test $ac_prog = install &&
+            grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    # OSF/1 installbsd also uses dspmsg, but is usable.
+	    :
+	  else
+	    ac_cv_path_install="$ac_dir/$ac_prog -c"
+	    break 2
+	  fi
+	fi
+      done
+      ;;
+    esac
+  done
+  IFS="$ac_save_IFS"
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL="$ac_cv_path_install"
+  else
+    # As a last resort, use the slow shell script.  We don't cache a
+    # path for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the path is relative.
+    INSTALL="$ac_install_sh"
+  fi
+fi
+echo "$ac_t""$INSTALL" 1>&6
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
+echo "configure:1109: checking whether ${MAKE-make} sets \${MAKE}" >&5
+set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftestmake <<\EOF
+all:
+	@echo 'ac_maketemp="${MAKE}"'
+EOF
+# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=`
+if test -n "$ac_maketemp"; then
+  eval ac_cv_prog_make_${ac_make}_set=yes
+else
+  eval ac_cv_prog_make_${ac_make}_set=no
+fi
+rm -f conftestmake
+fi
+if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  SET_MAKE=
+else
+  echo "$ac_t""no" 1>&6
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+
+# checks for UNIX variants that set C preprocessor variables
+ac_safe=`echo "minix/config.h" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for minix/config.h""... $ac_c" 1>&6
+echo "configure:1139: checking for minix/config.h" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1144 "configure"
+#include "confdefs.h"
+#include <minix/config.h>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1149: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  MINIX=yes
+else
+  echo "$ac_t""no" 1>&6
+MINIX=
+fi
+
+if test "$MINIX" = yes; then
+  cat >> confdefs.h <<\EOF
+#define _POSIX_SOURCE 1
+EOF
+
+  cat >> confdefs.h <<\EOF
+#define _POSIX_1_SOURCE 2
+EOF
+
+  cat >> confdefs.h <<\EOF
+#define _MINIX 1
+EOF
+
+fi
+
+
+case "$host_os" in
+nextstep*)	;;
+human*)		;;
+*) LIBS="-lm $LIBS";;
+esac
+echo $ac_n "checking for crypt in -lcrypt""... $ac_c" 1>&6
+echo "configure:1193: checking for crypt in -lcrypt" >&5
+ac_lib_var=`echo crypt'_'crypt | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lcrypt  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 1201 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char crypt();
+
+int main() {
+crypt()
+; return 0; }
+EOF
+if { (eval echo configure:1212: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo crypt | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-lcrypt $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
+echo "configure:1240: checking for dlopen in -ldl" >&5
+ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-ldl  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 1248 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char dlopen();
+
+int main() {
+dlopen()
+; return 0; }
+EOF
+if { (eval echo configure:1259: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo dl | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-ldl $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+	# Dynamic linking for SunOS/Solaris and SYSV
+echo $ac_n "checking for shl_load in -ldld""... $ac_c" 1>&6
+echo "configure:1287: checking for shl_load in -ldld" >&5
+ac_lib_var=`echo dld'_'shl_load | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-ldld  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 1295 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char shl_load();
+
+int main() {
+shl_load()
+; return 0; }
+EOF
+if { (eval echo configure:1306: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo dld | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-ldld $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+	# Dynamic linking for HP-UX
+
+ac_header_dirent=no
+for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr that defines DIR""... $ac_c" 1>&6
+echo "configure:1339: checking for $ac_hdr that defines DIR" >&5
+if eval "test \"`echo '$''{'ac_cv_header_dirent_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1344 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <$ac_hdr>
+int main() {
+DIR *dirp = 0;
+; return 0; }
+EOF
+if { (eval echo configure:1352: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  eval "ac_cv_header_dirent_$ac_safe=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_dirent_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_dirent_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+ ac_header_dirent=$ac_hdr; break
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
+if test $ac_header_dirent = dirent.h; then
+echo $ac_n "checking for opendir in -ldir""... $ac_c" 1>&6
+echo "configure:1377: checking for opendir in -ldir" >&5
+ac_lib_var=`echo dir'_'opendir | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-ldir  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 1385 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char opendir();
+
+int main() {
+opendir()
+; return 0; }
+EOF
+if { (eval echo configure:1396: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  LIBS="$LIBS -ldir"
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+else
+echo $ac_n "checking for opendir in -lx""... $ac_c" 1>&6
+echo "configure:1418: checking for opendir in -lx" >&5
+ac_lib_var=`echo x'_'opendir | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lx  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 1426 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char opendir();
+
+int main() {
+opendir()
+; return 0; }
+EOF
+if { (eval echo configure:1437: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  LIBS="$LIBS -lx"
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+fi
+
+echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
+echo "configure:1460: checking for ANSI C header files" >&5
+if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1465 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1473: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  ac_cv_header_stdc=yes
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+cat > conftest.$ac_ext <<EOF
+#line 1490 "configure"
+#include "confdefs.h"
+#include <string.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "memchr" >/dev/null 2>&1; then
+  :
+else
+  rm -rf conftest*
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+cat > conftest.$ac_ext <<EOF
+#line 1508 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "free" >/dev/null 2>&1; then
+  :
+else
+  rm -rf conftest*
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+if test "$cross_compiling" = yes; then
+  :
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1529 "configure"
+#include "confdefs.h"
+#include <ctype.h>
+#define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+#define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int main () { int i; for (i = 0; i < 256; i++)
+if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
+exit (0); }
+
+EOF
+if { (eval echo configure:1540: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  :
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_header_stdc=no
+fi
+rm -fr conftest*
+fi
+
+fi
+fi
+
+echo "$ac_t""$ac_cv_header_stdc" 1>&6
+if test $ac_cv_header_stdc = yes; then
+  cat >> confdefs.h <<\EOF
+#define STDC_HEADERS 1
+EOF
+
+fi
+
+for ac_hdr in stdlib.h unistd.h limits.h sys/file.h sys/ioctl.h pwd.h \
+		 sys/select.h sys/time.h sys/times.h sys/param.h sys/wait.h\
+		 syscall.h a.out.h string.h utime.h memory.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:1569: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1574 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1579: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
+
+echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
+echo "configure:1607: checking for uid_t in sys/types.h" >&5
+if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1612 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "uid_t" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_type_uid_t=yes
+else
+  rm -rf conftest*
+  ac_cv_type_uid_t=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$ac_cv_type_uid_t" 1>&6
+if test $ac_cv_type_uid_t = no; then
+  cat >> confdefs.h <<\EOF
+#define uid_t int
+EOF
+
+  cat >> confdefs.h <<\EOF
+#define gid_t int
+EOF
+
+fi
+
+echo $ac_n "checking for size_t""... $ac_c" 1>&6
+echo "configure:1641: checking for size_t" >&5
+if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1646 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "size_t[^a-zA-Z_0-9]" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_type_size_t=yes
+else
+  rm -rf conftest*
+  ac_cv_type_size_t=no
+fi
+rm -f conftest*
+
+fi
+echo "$ac_t""$ac_cv_type_size_t" 1>&6
+if test $ac_cv_type_size_t = no; then
+  cat >> confdefs.h <<\EOF
+#define size_t unsigned
+EOF
+
+fi
+
+echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
+echo "configure:1674: checking for st_blksize in struct stat" >&5
+if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1679 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+int main() {
+struct stat s; s.st_blksize;
+; return 0; }
+EOF
+if { (eval echo configure:1687: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_struct_st_blksize=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_struct_st_blksize=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_struct_st_blksize" 1>&6
+if test $ac_cv_struct_st_blksize = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_ST_BLKSIZE 1
+EOF
+
+fi
+
+save_LIBOJBS="$LIBOBJS"
+echo $ac_n "checking for st_blocks in struct stat""... $ac_c" 1>&6
+echo "configure:1709: checking for st_blocks in struct stat" >&5
+if eval "test \"`echo '$''{'ac_cv_struct_st_blocks'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1714 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+int main() {
+struct stat s; s.st_blocks;
+; return 0; }
+EOF
+if { (eval echo configure:1722: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_struct_st_blocks=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_struct_st_blocks=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_struct_st_blocks" 1>&6
+if test $ac_cv_struct_st_blocks = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_ST_BLOCKS 1
+EOF
+
+else
+  LIBOBJS="$LIBOBJS fileblocks.o"
+fi
+
+LIBOBJS="$save_LIBOBJS"
+echo $ac_n "checking for st_rdev in struct stat""... $ac_c" 1>&6
+echo "configure:1746: checking for st_rdev in struct stat" >&5
+if eval "test \"`echo '$''{'ac_cv_struct_st_rdev'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1751 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+int main() {
+struct stat s; s.st_rdev;
+; return 0; }
+EOF
+if { (eval echo configure:1759: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_struct_st_rdev=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_struct_st_rdev=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_struct_st_rdev" 1>&6
+if test $ac_cv_struct_st_rdev = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_ST_RDEV 1
+EOF
+
+fi
+
+
+echo $ac_n "checking size of short""... $ac_c" 1>&6
+echo "configure:1781: checking size of short" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_short'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1789 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+  FILE *f=fopen("conftestval", "w");
+  if (!f) exit(1);
+  fprintf(f, "%d\n", sizeof(short));
+  exit(0);
+}
+EOF
+if { (eval echo configure:1800: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_sizeof_short=`cat conftestval`
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_sizeof_short=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_short" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_SHORT $ac_cv_sizeof_short
+EOF
+
+
+echo $ac_n "checking size of int""... $ac_c" 1>&6
+echo "configure:1820: checking size of int" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_int'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1828 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+  FILE *f=fopen("conftestval", "w");
+  if (!f) exit(1);
+  fprintf(f, "%d\n", sizeof(int));
+  exit(0);
+}
+EOF
+if { (eval echo configure:1839: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_sizeof_int=`cat conftestval`
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_sizeof_int=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_int" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_INT $ac_cv_sizeof_int
+EOF
+
+
+echo $ac_n "checking size of long""... $ac_c" 1>&6
+echo "configure:1859: checking size of long" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_long'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1867 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+  FILE *f=fopen("conftestval", "w");
+  if (!f) exit(1);
+  fprintf(f, "%d\n", sizeof(long));
+  exit(0);
+}
+EOF
+if { (eval echo configure:1878: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_sizeof_long=`cat conftestval`
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_sizeof_long=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_long" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_LONG $ac_cv_sizeof_long
+EOF
+
+
+echo $ac_n "checking size of void*""... $ac_c" 1>&6
+echo "configure:1898: checking size of void*" >&5
+if eval "test \"`echo '$''{'ac_cv_sizeof_voidp'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1906 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+main()
+{
+  FILE *f=fopen("conftestval", "w");
+  if (!f) exit(1);
+  fprintf(f, "%d\n", sizeof(void*));
+  exit(0);
+}
+EOF
+if { (eval echo configure:1917: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_sizeof_voidp=`cat conftestval`
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_sizeof_voidp=0
+fi
+rm -fr conftest*
+fi
+
+fi
+echo "$ac_t""$ac_cv_sizeof_voidp" 1>&6
+cat >> confdefs.h <<EOF
+#define SIZEOF_VOIDP $ac_cv_sizeof_voidp
+EOF
+
+
+
+echo $ac_n "checking type of array argument to getgroups""... $ac_c" 1>&6
+echo "configure:1938: checking type of array argument to getgroups" >&5
+if eval "test \"`echo '$''{'ac_cv_type_getgroups'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+  ac_cv_type_getgroups=cross
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1946 "configure"
+#include "confdefs.h"
+
+/* Thanks to Mike Rendell for this test.  */
+#include <sys/types.h>
+#define NGID 256
+#undef MAX
+#define MAX(x, y) ((x) > (y) ? (x) : (y))
+main()
+{
+  gid_t gidset[NGID];
+  int i, n;
+  union { gid_t gval; long lval; }  val;
+
+  val.lval = -1;
+  for (i = 0; i < NGID; i++)
+    gidset[i] = val.gval;
+  n = getgroups (sizeof (gidset) / MAX (sizeof (int), sizeof (gid_t)) - 1,
+                 gidset);
+  /* Exit non-zero if getgroups seems to require an array of ints.  This
+     happens when gid_t is short but getgroups modifies an array of ints.  */
+  exit ((n > 0 && gidset[n] != val.gval) ? 1 : 0);
+}
+
+EOF
+if { (eval echo configure:1971: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+    ac_cv_type_getgroups=gid_t
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_type_getgroups=int
+fi
+rm -fr conftest*
+fi
+
+if test $ac_cv_type_getgroups = cross; then
+        cat > conftest.$ac_ext <<EOF
+#line 1985 "configure"
+#include "confdefs.h"
+#include <unistd.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "getgroups.*int.*gid_t" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_type_getgroups=gid_t
+else
+  rm -rf conftest*
+  ac_cv_type_getgroups=int
+fi
+rm -f conftest*
+
+fi
+fi
+
+echo "$ac_t""$ac_cv_type_getgroups" 1>&6
+cat >> confdefs.h <<EOF
+#define GETGROUPS_T $ac_cv_type_getgroups
+EOF
+
+
+echo $ac_n "checking return type of signal handlers""... $ac_c" 1>&6
+echo "configure:2009: checking return type of signal handlers" >&5
+if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2014 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <signal.h>
+#ifdef signal
+#undef signal
+#endif
+#ifdef __cplusplus
+extern "C" void (*signal (int, void (*)(int)))(int);
+#else
+void (*signal ()) ();
+#endif
+
+int main() {
+int i;
+; return 0; }
+EOF
+if { (eval echo configure:2031: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_type_signal=void
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_type_signal=int
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_type_signal" 1>&6
+cat >> confdefs.h <<EOF
+#define RETSIGTYPE $ac_cv_type_signal
+EOF
+
+
+# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
+# for constant arguments.  Useless!
+echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
+echo "configure:2052: checking for working alloca.h" >&5
+if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2057 "configure"
+#include "confdefs.h"
+#include <alloca.h>
+int main() {
+char *p = alloca(2 * sizeof(int));
+; return 0; }
+EOF
+if { (eval echo configure:2064: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  ac_cv_header_alloca_h=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_header_alloca_h=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_header_alloca_h" 1>&6
+if test $ac_cv_header_alloca_h = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_ALLOCA_H 1
+EOF
+
+fi
+
+echo $ac_n "checking for alloca""... $ac_c" 1>&6
+echo "configure:2085: checking for alloca" >&5
+if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2090 "configure"
+#include "confdefs.h"
+
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+#else
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+int main() {
+char *p = (char *) alloca(1);
+; return 0; }
+EOF
+if { (eval echo configure:2113: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  ac_cv_func_alloca_works=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_func_alloca_works=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_func_alloca_works" 1>&6
+if test $ac_cv_func_alloca_works = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_ALLOCA 1
+EOF
+
+fi
+
+if test $ac_cv_func_alloca_works = no; then
+  # The SVR3 libPW and SVR4 libucb both contain incompatible functions
+  # that cause trouble.  Some versions do not even contain alloca or
+  # contain a buggy version.  If you still want to use their alloca,
+  # use ar to extract alloca.o from them instead of compiling alloca.c.
+  ALLOCA=alloca.o
+  cat >> confdefs.h <<\EOF
+#define C_ALLOCA 1
+EOF
+
+
+echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
+echo "configure:2145: checking whether alloca needs Cray hooks" >&5
+if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2150 "configure"
+#include "confdefs.h"
+#if defined(CRAY) && ! defined(CRAY2)
+webecray
+#else
+wenotbecray
+#endif
+
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "webecray" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_os_cray=yes
+else
+  rm -rf conftest*
+  ac_cv_os_cray=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$ac_cv_os_cray" 1>&6
+if test $ac_cv_os_cray = yes; then
+for ac_func in _getb67 GETB67 getb67; do
+  echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:2175: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2180 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:2203: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  cat >> confdefs.h <<EOF
+#define CRAY_STACKSEG_END $ac_func
+EOF
+
+  break
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+done
+fi
+
+echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
+echo "configure:2230: checking stack direction for C alloca" >&5
+if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+  ac_cv_c_stack_direction=0
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2238 "configure"
+#include "confdefs.h"
+find_stack_direction ()
+{
+  static char *addr = 0;
+  auto char dummy;
+  if (addr == 0)
+    {
+      addr = &dummy;
+      return find_stack_direction ();
+    }
+  else
+    return (&dummy > addr) ? 1 : -1;
+}
+main ()
+{
+  exit (find_stack_direction() < 0);
+}
+EOF
+if { (eval echo configure:2257: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_c_stack_direction=1
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_c_stack_direction=-1
+fi
+rm -fr conftest*
+fi
+
+fi
+
+echo "$ac_t""$ac_cv_c_stack_direction" 1>&6
+cat >> confdefs.h <<EOF
+#define STACK_DIRECTION $ac_cv_c_stack_direction
+EOF
+
+fi
+
+echo $ac_n "checking for pid_t""... $ac_c" 1>&6
+echo "configure:2279: checking for pid_t" >&5
+if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2284 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "pid_t[^a-zA-Z_0-9]" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_type_pid_t=yes
+else
+  rm -rf conftest*
+  ac_cv_type_pid_t=no
+fi
+rm -f conftest*
+
+fi
+echo "$ac_t""$ac_cv_type_pid_t" 1>&6
+if test $ac_cv_type_pid_t = no; then
+  cat >> confdefs.h <<\EOF
+#define pid_t int
+EOF
+
+fi
+
+ac_safe=`echo "vfork.h" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for vfork.h""... $ac_c" 1>&6
+echo "configure:2313: checking for vfork.h" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2318 "configure"
+#include "confdefs.h"
+#include <vfork.h>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:2323: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  cat >> confdefs.h <<\EOF
+#define HAVE_VFORK_H 1
+EOF
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+echo $ac_n "checking for working vfork""... $ac_c" 1>&6
+echo "configure:2348: checking for working vfork" >&5
+if eval "test \"`echo '$''{'ac_cv_func_vfork_works'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+  echo $ac_n "checking for vfork""... $ac_c" 1>&6
+echo "configure:2354: checking for vfork" >&5
+if eval "test \"`echo '$''{'ac_cv_func_vfork'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2359 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char vfork(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char vfork();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_vfork) || defined (__stub___vfork)
+choke me
+#else
+vfork();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:2382: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_vfork=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_vfork=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'vfork`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  :
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2403 "configure"
+#include "confdefs.h"
+/* Thanks to Paul Eggert for this test.  */
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_VFORK_H
+#include <vfork.h>
+#endif
+/* On some sparc systems, changes by the child to local and incoming
+   argument registers are propagated back to the parent.
+   The compiler is told about this with #include <vfork.h>,
+   but some compilers (e.g. gcc -O) don't grok <vfork.h>.
+   Test for this by using a static variable whose address
+   is put into a register that is clobbered by the vfork.  */
+static
+#ifdef __cplusplus
+sparc_address_test (int arg)
+#else
+sparc_address_test (arg) int arg;
+#endif
+{
+  static pid_t child;
+  if (!child) {
+    child = vfork ();
+    if (child < 0) {
+      perror ("vfork");
+      _exit(2);
+    }
+    if (!child) {
+      arg = getpid();
+      write(-1, "", 0);
+      _exit (arg);
+    }
+  }
+}
+main() {
+  pid_t parent = getpid ();
+  pid_t child;
+
+  sparc_address_test ();
+
+  child = vfork ();
+
+  if (child == 0) {
+    /* Here is another test for sparc vfork register problems.
+       This test uses lots of local variables, at least
+       as many local variables as main has allocated so far
+       including compiler temporaries.  4 locals are enough for
+       gcc 1.40.3 on a Solaris 4.1.3 sparc, but we use 8 to be safe.
+       A buggy compiler should reuse the register of parent
+       for one of the local variables, since it will think that
+       parent can't possibly be used any more in this routine.
+       Assigning to the local variable will thus munge parent
+       in the parent process.  */
+    pid_t
+      p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
+      p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
+    /* Convince the compiler that p..p7 are live; otherwise, it might
+       use the same hardware register for all 8 local variables.  */
+    if (p != p1 || p != p2 || p != p3 || p != p4
+	|| p != p5 || p != p6 || p != p7)
+      _exit(1);
+
+    /* On some systems (e.g. IRIX 3.3),
+       vfork doesn't separate parent from child file descriptors.
+       If the child closes a descriptor before it execs or exits,
+       this munges the parent's descriptor as well.
+       Test for this by closing stdout in the child.  */
+    _exit(close(fileno(stdout)) != 0);
+  } else {
+    int status;
+    struct stat st;
+
+    while (wait(&status) != child)
+      ;
+    exit(
+	 /* Was there some problem with vforking?  */
+	 child < 0
+
+	 /* Did the child fail?  (This shouldn't happen.)  */
+	 || status
+
+	 /* Did the vfork/compiler bug occur?  */
+	 || parent != getpid()
+
+	 /* Did the file descriptor bug occur?  */
+	 || fstat(fileno(stdout), &st) != 0
+	 );
+  }
+}
+EOF
+if { (eval echo configure:2498: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_func_vfork_works=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_func_vfork_works=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+echo "$ac_t""$ac_cv_func_vfork_works" 1>&6
+if test $ac_cv_func_vfork_works = no; then
+  cat >> confdefs.h <<\EOF
+#define vfork fork
+EOF
+
+fi
+
+echo $ac_n "checking for 8-bit clean memcmp""... $ac_c" 1>&6
+echo "configure:2521: checking for 8-bit clean memcmp" >&5
+if eval "test \"`echo '$''{'ac_cv_func_memcmp_clean'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+  ac_cv_func_memcmp_clean=no
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2529 "configure"
+#include "confdefs.h"
+
+main()
+{
+  char c0 = 0x40, c1 = 0x80, c2 = 0x81;
+  exit(memcmp(&c0, &c2, 1) < 0 && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
+}
+
+EOF
+if { (eval echo configure:2539: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_func_memcmp_clean=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_func_memcmp_clean=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+echo "$ac_t""$ac_cv_func_memcmp_clean" 1>&6
+test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.o"
+
+for ac_func in dup2 setenv memmove mkdir strcasecmp strerror strftime\
+		 strchr strstr strtoul strdup crypt flock
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:2560: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2565 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:2588: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+LIBOBJS="$LIBOBJS ${ac_func}.o"
+fi
+done
+
+
+for ac_func in fmod killpg random wait4 waitpid syscall getcwd\
+	      truncate chsize times utimes fcntl lockf setitimer\
+	      setruid seteuid setreuid setrgid setegid setregid\
+	      setpgrp2 getpgid getgroups getpriority\
+	      dlopen sigprocmask sigaction _setjmp
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:2621: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2626 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:2649: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
+if test "$ac_cv_func_strftime" = no; then
+    echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6
+echo "configure:2675: checking whether struct tm is in sys/time.h or time.h" >&5
+if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2680 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <time.h>
+int main() {
+struct tm *tp; tp->tm_sec;
+; return 0; }
+EOF
+if { (eval echo configure:2688: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_struct_tm=time.h
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_struct_tm=sys/time.h
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_struct_tm" 1>&6
+if test $ac_cv_struct_tm = sys/time.h; then
+  cat >> confdefs.h <<\EOF
+#define TM_IN_SYS_TIME 1
+EOF
+
+fi
+
+echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6
+echo "configure:2709: checking for tm_zone in struct tm" >&5
+if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2714 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <$ac_cv_struct_tm>
+int main() {
+struct tm tm; tm.tm_zone;
+; return 0; }
+EOF
+if { (eval echo configure:2722: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_struct_tm_zone=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_struct_tm_zone=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_struct_tm_zone" 1>&6
+if test "$ac_cv_struct_tm_zone" = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_TM_ZONE 1
+EOF
+
+else
+  echo $ac_n "checking for tzname""... $ac_c" 1>&6
+echo "configure:2742: checking for tzname" >&5
+if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2747 "configure"
+#include "confdefs.h"
+#include <time.h>
+#ifndef tzname /* For SGI.  */
+extern char *tzname[]; /* RS6000 and others reject char **tzname.  */
+#endif
+int main() {
+atoi(*tzname);
+; return 0; }
+EOF
+if { (eval echo configure:2757: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  ac_cv_var_tzname=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_var_tzname=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$ac_cv_var_tzname" 1>&6
+  if test $ac_cv_var_tzname = yes; then
+    cat >> confdefs.h <<\EOF
+#define HAVE_TZNAME 1
+EOF
+
+  fi
+fi
+
+    cat > conftest.$ac_ext <<EOF
+#line 2779 "configure"
+#include "confdefs.h"
+
+int main() {
+extern int daylight; int i = daylight;
+; return 0; }
+EOF
+if { (eval echo configure:2786: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define HAVE_DAYLIGHT 1
+EOF
+
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+fi
+rm -f conftest*
+fi
+
+if test "$ac_cv_func_sigprocmask" = yes && test "$ac_cv_func_sigaction" = yes; then
+   cat >> confdefs.h <<\EOF
+#define POSIX_SIGNAL 1
+EOF
+
+else
+  echo $ac_n "checking for BSD signal semantics""... $ac_c" 1>&6
+echo "configure:2806: checking for BSD signal semantics" >&5
+  if eval "test \"`echo '$''{'rb_cv_bsd_signal'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2814 "configure"
+#include "confdefs.h"
+
+#include <stdio.h>
+#include <signal.h>
+
+void
+sig_handler(dummy)
+     int dummy;
+{
+}
+
+int
+main()
+{
+  signal(SIGINT, sig_handler);
+  kill(getpid(), SIGINT);
+  kill(getpid(), SIGINT);
+  return 0;
+}
+
+EOF
+if { (eval echo configure:2836: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  rb_cv_bsd_signal=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  rb_cv_bsd_signal=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+  echo "$ac_t""$rb_cv_bsd_signal" 1>&6
+  if test "$rb_cv_bsd_signal" = yes; then
+    cat >> confdefs.h <<\EOF
+#define BSD_SIGNAL 1
+EOF
+
+  fi
+fi
+
+if test "$ac_cv_func_setpgrp2" = yes; then
+  cat >> confdefs.h <<\EOF
+#define BSD_GETPGRP getpgrp2
+EOF
+
+  cat >> confdefs.h <<\EOF
+#define BSD_SETPGRP setpgrp2
+EOF
+
+else
+  echo $ac_n "checking whether getpgrp() has arg""... $ac_c" 1>&6
+echo "configure:2870: checking whether getpgrp() has arg" >&5
+  if eval "test \"`echo '$''{'rb_cv_bsdgetpgrp'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2875 "configure"
+#include "confdefs.h"
+#include <unistd.h>
+int main() {
+getpgrp(0);
+; return 0; }
+EOF
+if { (eval echo configure:2882: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  rb_cv_bsdgetpgrp=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  rb_cv_bsdgetpgrp=no
+fi
+rm -f conftest*
+fi
+
+  echo "$ac_t""$rb_cv_bsdgetpgrp" 1>&6
+  if test "$rb_cv_bsdgetpgrp" = yes; then
+    cat >> confdefs.h <<\EOF
+#define BSD_GETPGRP getpgrp
+EOF
+
+  fi
+
+  echo $ac_n "checking whether setpgrp() has args""... $ac_c" 1>&6
+echo "configure:2903: checking whether setpgrp() has args" >&5
+  if eval "test \"`echo '$''{'rb_cv_bsdsetpgrp'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2908 "configure"
+#include "confdefs.h"
+#include <unistd.h>
+int main() {
+setpgrp(1, 1);
+; return 0; }
+EOF
+if { (eval echo configure:2915: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  rb_cv_bsdsetpgrp=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  rb_cv_bsdsetpgrp=no
+fi
+rm -f conftest*
+fi
+
+  echo "$ac_t""$rb_cv_bsdsetpgrp" 1>&6
+  if test "$rb_cv_bsdsetpgrp" = yes; then
+    cat >> confdefs.h <<\EOF
+#define BSD_SETPGRP setpgrp
+EOF
+
+  fi
+fi
+
+echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
+echo "configure:2937: checking whether byte ordering is bigendian" >&5
+if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_cv_c_bigendian=unknown
+# See if sys/param.h defines the BYTE_ORDER macro.
+cat > conftest.$ac_ext <<EOF
+#line 2944 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <sys/param.h>
+int main() {
+
+#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
+ bogus endian macros
+#endif
+; return 0; }
+EOF
+if { (eval echo configure:2955: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+cat > conftest.$ac_ext <<EOF
+#line 2959 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <sys/param.h>
+int main() {
+
+#if BYTE_ORDER != BIG_ENDIAN
+ not big endian
+#endif
+; return 0; }
+EOF
+if { (eval echo configure:2970: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  ac_cv_c_bigendian=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  ac_cv_c_bigendian=no
+fi
+rm -f conftest*
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+fi
+rm -f conftest*
+if test $ac_cv_c_bigendian = unknown; then
+if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2990 "configure"
+#include "confdefs.h"
+main () {
+  /* Are we little or big endian?  From Harbison&Steele.  */
+  union
+  {
+    long l;
+    char c[sizeof (long)];
+  } u;
+  u.l = 1;
+  exit (u.c[sizeof (long) - 1] == 1);
+}
+EOF
+if { (eval echo configure:3003: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_c_bigendian=no
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_c_bigendian=yes
+fi
+rm -fr conftest*
+fi
+
+fi
+fi
+
+echo "$ac_t""$ac_cv_c_bigendian" 1>&6
+if test $ac_cv_c_bigendian = yes; then
+  cat >> confdefs.h <<\EOF
+#define WORDS_BIGENDIAN 1
+EOF
+
+fi
+
+echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
+echo "configure:3027: checking whether char is unsigned" >&5
+if eval "test \"`echo '$''{'ac_cv_c_char_unsigned'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$GCC" = yes; then
+  # GCC predefines this symbol on systems where it applies.
+cat > conftest.$ac_ext <<EOF
+#line 3034 "configure"
+#include "confdefs.h"
+#ifdef __CHAR_UNSIGNED__
+  yes
+#endif
+
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "yes" >/dev/null 2>&1; then
+  rm -rf conftest*
+  ac_cv_c_char_unsigned=yes
+else
+  rm -rf conftest*
+  ac_cv_c_char_unsigned=no
+fi
+rm -f conftest*
+
+else
+if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3056 "configure"
+#include "confdefs.h"
+/* volatile prevents gcc2 from optimizing the test away on sparcs.  */
+#if !defined(__STDC__) || __STDC__ != 1
+#define volatile
+#endif
+main() {
+  volatile char c = 255; exit(c < 0);
+}
+EOF
+if { (eval echo configure:3066: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_c_char_unsigned=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_c_char_unsigned=no
+fi
+rm -fr conftest*
+fi
+
+fi
+fi
+
+echo "$ac_t""$ac_cv_c_char_unsigned" 1>&6
+if test $ac_cv_c_char_unsigned = yes && test "$GCC" != yes; then
+  cat >> confdefs.h <<\EOF
+#define __CHAR_UNSIGNED__ 1
+EOF
+
+fi
+
+
+echo $ac_n "checking count field in FILE structures""... $ac_c" 1>&6
+echo "configure:3091: checking count field in FILE structures" >&5
+if eval "test \"`echo '$''{'rb_cv_fcnt'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3096 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+int main() {
+FILE *f = stdin; f->_cnt = 0;
+; return 0; }
+EOF
+if { (eval echo configure:3103: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  rb_cv_fcnt="_cnt"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+fi
+rm -f conftest*
+if test "$rb_cv_fcnt" = ""; then
+    cat > conftest.$ac_ext <<EOF
+#line 3113 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+int main() {
+FILE *f = stdin; f->__cnt = 0;
+; return 0; }
+EOF
+if { (eval echo configure:3120: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  rb_cv_fcnt="__cnt"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+fi
+rm -f conftest*
+fi
+if test "$rb_cv_fcnt" = ""; then
+    cat > conftest.$ac_ext <<EOF
+#line 3131 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+int main() {
+FILE *f = stdin; f->_r = 0;
+; return 0; }
+EOF
+if { (eval echo configure:3138: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  rb_cv_fcnt="_r"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+fi
+rm -f conftest*
+fi
+if test "$rb_cv_fcnt" = ""; then
+    cat > conftest.$ac_ext <<EOF
+#line 3149 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+int main() {
+FILE *f = stdin; f->readCount = 0;
+; return 0; }
+EOF
+if { (eval echo configure:3156: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  rb_cv_fcnt="readCount"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  rb_cv_fcnt="not found"
+fi
+rm -f conftest*
+fi
+fi
+
+if test "$rb_cv_fcnt" = "not found"; then
+  echo "$ac_t""not found(OK if using GNU libc)" 1>&6
+else
+  echo "$ac_t""$rb_cv_fcnt" 1>&6
+  cat >> confdefs.h <<EOF
+#define FILE_COUNT $rb_cv_fcnt
+EOF
+
+fi
+
+if test "$ac_cv_func_getpwent" = yes; then
+  echo $ac_n "checking struct passwd""... $ac_c" 1>&6
+echo "configure:3181: checking struct passwd" >&5
+  cat > conftest.$ac_ext <<EOF
+#line 3183 "configure"
+#include "confdefs.h"
+#include <pwd.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "pw_change" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define PW_CHANGE 1
+EOF
+
+fi
+rm -f conftest*
+
+  cat > conftest.$ac_ext <<EOF
+#line 3198 "configure"
+#include "confdefs.h"
+#include <pwd.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "pw_quota" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define PW_QUOTA 1
+EOF
+
+fi
+rm -f conftest*
+
+  cat > conftest.$ac_ext <<EOF
+#line 3213 "configure"
+#include "confdefs.h"
+#include <pwd.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "pw_age" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define PW_AGE 1
+EOF
+
+fi
+rm -f conftest*
+
+  cat > conftest.$ac_ext <<EOF
+#line 3228 "configure"
+#include "confdefs.h"
+#include <pwd.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "pw_class" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define PW_CLASS 1
+EOF
+
+fi
+rm -f conftest*
+
+  cat > conftest.$ac_ext <<EOF
+#line 3243 "configure"
+#include "confdefs.h"
+#include <pwd.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "pw_comment" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define PW_COMMENT 1
+EOF
+
+fi
+rm -f conftest*
+
+  cat > conftest.$ac_ext <<EOF
+#line 3258 "configure"
+#include "confdefs.h"
+#include <pwd.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "pw_expire" >/dev/null 2>&1; then
+  rm -rf conftest*
+  cat >> confdefs.h <<\EOF
+#define PW_EXPIRE 1
+EOF
+
+fi
+rm -f conftest*
+
+  echo "$ac_t""done" 1>&6
+fi
+
+# Check whether --with-dln-a-out or --without-dln-a-out was given.
+if test "${with_dln_a_out+set}" = set; then
+  withval="$with_dln_a_out"
+  
+	case $withval in
+	yes) with_dln_a_out=yes;;
+	*)   with_dln_a_out=no;;
+	esac
+else
+  with_dln_a_out=no
+fi
+
+
+case "$host_os" in
+    linux*)
+  echo $ac_n "checking whether ELF binaries are produced""... $ac_c" 1>&6
+echo "configure:3291: checking whether ELF binaries are produced" >&5
+  if eval "test \"`echo '$''{'rb_cv_linux_elf'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+  :
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3299 "configure"
+#include "confdefs.h"
+
+/* Test for whether ELF binaries are produced */
+#include <fcntl.h>
+#include <stdlib.h>
+main() {
+	char buffer[4];
+	int i=open("conftest",O_RDONLY);
+	if(i==-1)
+		exit(1); /* fail */
+	if(read(i,&buffer[0],4)<4)
+		exit(1); /* fail */
+	if(buffer[0] != 127 || buffer[1] != 'E' ||
+           buffer[2] != 'L' || buffer[3] != 'F')
+		exit(1); /* fail */
+	exit(0); /* succeed (yes, it's ELF) */
+}
+
+EOF
+if { (eval echo configure:3319: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  rb_cv_linux_elf=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  rb_cv_linux_elf=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+  echo "$ac_t""$rb_cv_linux_elf" 1>&6
+  if test "$rb_cv_linux_elf" = no; then
+    with_dln_a_out=yes
+    host_os=linux-a.out
+  else
+    LDFLAGS="-rdynamic"
+  fi;;
+esac
+
+
+
+STATIC=
+
+if test "$with_dln_a_out" != yes; then
+  rb_cv_dlopen=unknown
+  echo $ac_n "checking whether OS depend dynamic link works""... $ac_c" 1>&6
+echo "configure:3349: checking whether OS depend dynamic link works" >&5
+  if test "$GCC" = yes; then
+    case "$host_os" in
+    nextstep*)	;;
+    human*)	;;
+    *) CCDLFLAGS=-fpic;;
+    esac
+  else
+    case "$host_os" in
+	hpux*)		CCDLFLAGS='+z';;
+	solaris*|irix*)	CCDLFLAGS='-K pic' ;;
+	sunos*)		CCDLFLAGS='-pic' ;;
+	esix*|uxpds*)   CCDLFLAGS='-Kpic' ;;
+	*)		CCDLFLAGS='' ;;
+    esac
+  fi
+
+  case "$host_os" in
+	hpux*)		DLDFLAGS="-E"
+			LDSHARED='ld -b'
+			LDFLAGS="-Wl,-E"
+			rb_cv_dlopen=yes;;
+	solaris*) 	LDSHARED='ld -G'
+			rb_cv_dlopen=yes;;
+	sunos*) 	LDSHARED='ld -assert nodefinitions'
+			rb_cv_dlopen=yes;;
+	irix*) 	 	LDSHARED='ld -ignore_unresolved'
+			rb_cv_dlopen=yes;;
+	sysv4*) 	LDSHARED='ld -G'
+			rb_cv_dlopen=yes;;
+	esix*|uxpds*) 	LDSHARED="ld -G"
+			rb_cv_dlopen=yes ;;
+	linux*) 	LDSHARED="gcc -shared"
+			rb_cv_dlopen=yes ;;
+	freebsd*) 	LDSHARED="ld -Bshareable"
+			rb_cv_dlopen=yes ;;
+	netbsd*) 	LDSHARED="ld -Bshareable"
+			rb_cv_dlopen=yes ;;
+	openbsd*) 	LDSHARED="ld -Bshareable"
+			rb_cv_dlopen=yes ;;
+	nextstep*)	LDSHARED='cc -r'
+			LDFLAGS="-u libsys_s"
+			DLDFLAGS="$ARCH_FLAG" 
+			rb_cv_dlopen=yes ;;
+	aix*)		LDSHARED='../../miniruby ../aix_ld.rb $(TARGET)'
+			rb_cv_dlopen=yes ;;
+	human*)		DLDFLAGS=''
+			LDSHARED=''
+			LDFLAGS='' ;;
+	*) 		LDSHARED='ld' ;;
+  esac
+  echo "$ac_t""$rb_cv_dlopen" 1>&6
+fi
+
+dln_a_out_works=no
+if test "$ac_cv_header_a_out_h" = yes; then
+  if test "$with_dln_a_out" = yes || test "$rb_cv_dlopen" = unknown; then
+    echo $ac_n "checking whether matz's dln works""... $ac_c" 1>&6
+echo "configure:3407: checking whether matz's dln works" >&5
+    cat confdefs.h > config.h
+    if eval "test \"`echo '$''{'rb_cv_dln_a_out'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3413 "configure"
+#include "confdefs.h"
+
+#define USE_DLN_A_OUT
+#include "dln.c"
+
+int main() {
+
+; return 0; }
+EOF
+if { (eval echo configure:3423: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  rb_cv_dln_a_out=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  rb_cv_dln_a_out=no
+fi
+rm -f conftest*
+fi
+
+    echo "$ac_t""$rb_cv_dln_a_out" 1>&6
+    if test "$rb_cv_dln_a_out" = yes; then
+      dln_a_out_works=yes
+      cat >> confdefs.h <<\EOF
+#define USE_DLN_A_OUT 1
+EOF
+
+    fi
+  fi
+fi
+
+if test "$dln_a_out_works" = yes; then
+  if test "$GCC" = yes; then
+    STATIC=-static
+  else
+    STATIC=-Bstatic
+  fi
+  DLEXT=o
+  cat >> confdefs.h <<\EOF
+#define DLEXT ".o"
+EOF
+
+  CCDLFLAGS=
+else
+  case "$host_os" in
+    hpux*)	DLEXT=sl
+	 	cat >> confdefs.h <<\EOF
+#define DLEXT ".sl"
+EOF
+;;
+    nextstep*)	DLEXT=o
+	 	cat >> confdefs.h <<\EOF
+#define DLEXT ".o"
+EOF
+;;
+    *)		DLEXT=so
+    		cat >> confdefs.h <<\EOF
+#define DLEXT ".so"
+EOF
+;;
+  esac
+fi
+
+if test "$with_dln_a_out" = yes; then
+  STRIP=true
+else
+  STRIP=strip
+fi
+
+case "$host_os" in
+  linux*)
+	STRIP='strip -S -x';;
+  nextstep*)
+	STRIP='strip -A -n';;
+esac
+
+EXTSTATIC=
+# Check whether --with-static-linked-ext or --without-static-linked-ext was given.
+if test "${with_static_linked_ext+set}" = set; then
+  withval="$with_static_linked_ext"
+  case $withval in
+	     yes) STATIC=
+		  EXTSTATIC=static;;
+	     *)	;;
+	     esac
+fi
+
+
+case "$host_os" in
+  human*)
+    echo $ac_n "checking for _harderr in -lsignal""... $ac_c" 1>&6
+echo "configure:3506: checking for _harderr in -lsignal" >&5
+ac_lib_var=`echo signal'_'_harderr | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lsignal  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 3514 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char _harderr();
+
+int main() {
+_harderr()
+; return 0; }
+EOF
+if { (eval echo configure:3525: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo signal | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-lsignal $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+    echo $ac_n "checking for hmemset in -lhmem""... $ac_c" 1>&6
+echo "configure:3553: checking for hmemset in -lhmem" >&5
+ac_lib_var=`echo hmem'_'hmemset | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lhmem  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 3561 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char hmemset();
+
+int main() {
+hmemset()
+; return 0; }
+EOF
+if { (eval echo configure:3572: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo hmem | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-lhmem $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+    for ac_func in select
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:3602: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3607 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:3630: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
+    echo $ac_n "checking whether PD libc _dtos18 fail to convert big number""... $ac_c" 1>&6
+echo "configure:3655: checking whether PD libc _dtos18 fail to convert big number" >&5
+    if eval "test \"`echo '$''{'rb_cv_missing__dtos18'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3663 "configure"
+#include "confdefs.h"
+
+#include <stdio.h>
+main ()
+{
+   char buf[256];
+   sprintf (buf, "%g", 1e+300);
+   exit (strcmp (buf, "1e+300") ? 0 : 1);
+}
+
+EOF
+if { (eval echo configure:3675: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  rb_cv_missing__dtos18=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  rb_cv_missing__dtos18=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+    echo "$ac_t""$rb_cv_missing__dtos18" 1>&6
+    if test "$rb_cv_missing__dtos18" = yes; then
+      cat >> confdefs.h <<\EOF
+#define MISSING__DTOS18 1
+EOF
+
+    fi
+    echo $ac_n "checking whether PD libc fconvert fail to round""... $ac_c" 1>&6
+echo "configure:3697: checking whether PD libc fconvert fail to round" >&5
+    if eval "test \"`echo '$''{'rb_cv_missing_fconvert'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+    { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
+else
+  cat > conftest.$ac_ext <<EOF
+#line 3705 "configure"
+#include "confdefs.h"
+
+#include <stdio.h>
+#include <math.h>
+main ()
+{
+  char buf[256];
+  sprintf (buf, "%f", log(exp(1.0)));
+  exit (strcmp (buf, "1.000000") ? 0 : 1);
+}
+
+EOF
+if { (eval echo configure:3718: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  rb_cv_missing_fconvert=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  rb_cv_missing_fconvert=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+    echo "$ac_t""$rb_cv_missing_fconvert" 1>&6
+    if test "$rb_cv_missing_fconvert" = yes; then
+      cat >> confdefs.h <<\EOF
+#define MISSING_FCONVERT 1
+EOF
+
+    fi
+    LIBOBJS="$LIBOBJS x68.o"
+    CFLAGS="$CFLAGS -fansi-only -cc1-stack=196608 -cpp-stack=2694144"
+    binsuffix=.x
+    setup=Setup.x68
+    ;;
+  *)
+    binsuffix=
+    setup=Setup
+    ;;
+esac
+
+
+
+if test "$prefix" = NONE; then
+  prefix=$ac_default_prefix
+fi
+
+if test "$fat_binary" = yes ; then
+  CFLAGS="$CFLAGS -pipe $ARCH_FLAG"
+fi
+
+ri_prefix=
+test "$program_prefix" != NONE &&
+  ri_prefix=$program_prefix
+
+ri_suffix=
+test "$program_suffix" != NONE &&
+  ri_suffix=$program_suffix
+
+RUBY_INSTALL_NAME="${ri_prefix}ruby${ri_suffix}"
+cat >> confdefs.h <<EOF
+#define RUBY_LIB "${prefix}/lib/${RUBY_INSTALL_NAME}"
+EOF
+
+cat >> confdefs.h <<EOF
+#define RUBY_SITE_LIB "${prefix}/lib/${RUBY_INSTALL_NAME}/site_ruby"
+EOF
+
+
+if test "$fat_binary" = yes ; then
+    arch="fat-${host_os}"
+
+    cat >> confdefs.h <<EOF
+#define RUBY_THIN_ARCHLIB "${prefix}/lib/${RUBY_INSTALL_NAME}/" __ARCHITECTURE__ "-${host_os}" 
+EOF
+
+
+    cat >> confdefs.h <<EOF
+#define RUBY_SITE_THIN_ARCHLIB "${prefix}/lib/${RUBY_INSTALL_NAME}/" __ARCHITECTURE__ "-${host_os}" 
+EOF
+
+
+    cat >> confdefs.h <<EOF
+#define RUBY_ARCHLIB "${prefix}/lib/${RUBY_INSTALL_NAME}/${arch}"
+EOF
+
+    cat >> confdefs.h <<EOF
+#define RUBY_SITE_ARCHLIB "${prefix}/lib/${RUBY_INSTALL_NAME}/site_ruby/${arch}"
+EOF
+
+    cat >> confdefs.h <<EOF
+#define RUBY_PLATFORM __ARCHITECTURE__ "-${host_os}" 
+EOF
+
+else
+    arch="${host_cpu}-${host_os}"
+    cat >> confdefs.h <<EOF
+#define RUBY_ARCHLIB "${prefix}/lib/${RUBY_INSTALL_NAME}/${arch}"
+EOF
+
+    cat >> confdefs.h <<EOF
+#define RUBY_SITE_ARCHLIB "${prefix}/lib/${RUBY_INSTALL_NAME}/site_ruby/${arch}"
+EOF
+
+    cat >> confdefs.h <<EOF
+#define RUBY_PLATFORM "${arch}"
+EOF
+
+fi
+
+echo "creating config.h"
+cat confdefs.h > config.h
+
+trap '' 1 2 15
+cat > confcache <<\EOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs.  It is not useful on other systems.
+# If it contains results you don't want to keep, you may remove or edit it.
+#
+# By default, configure uses ./config.cache as the cache file,
+# creating it if it does not exist already.  You can give configure
+# the --cache-file=FILE option to use a different cache file; that is
+# what configure does when it calls configure scripts in
+# subdirectories, so they share the cache.
+# Giving --cache-file=/dev/null disables caching, for debugging configure.
+# config.status only pays attention to the cache file if you give it the
+# --recheck option to rerun configure.
+#
+EOF
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(set) 2>&1 |
+  case `(ac_space=' '; set) 2>&1` in
+  *ac_space=\ *)
+    # `set' does not quote correctly, so add quotes (double-quote substitution
+    # turns \\\\ into \\, and sed turns \\ into \).
+    sed -n \
+      -e "s/'/'\\\\''/g" \
+      -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p"
+    ;;
+  *)
+    # `set' quotes correctly as required by POSIX, so do not add quotes.
+    sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p'
+    ;;
+  esac >> confcache
+if cmp -s $cache_file confcache; then
+  :
+else
+  if test -w $cache_file; then
+    echo "updating cache $cache_file"
+    cat confcache > $cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+
+trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# Any assignment to VPATH causes Sun make to only execute
+# the first set of double-colon rules, so remove it if not needed.
+# If there is a colon in the path, we need to keep it.
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[ 	]*VPATH[ 	]*=[^:]*$/d'
+fi
+
+trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15
+
+# Transform confdefs.h into DEFS.
+# Protect against shell expansion while executing Makefile rules.
+# Protect against Makefile macro expansion.
+cat > conftest.defs <<\EOF
+s%#define \([A-Za-z_][A-Za-z0-9_]*\) *\(.*\)%-D\1=\2%g
+s%[ 	`~#$^&*(){}\\|;'"<>?]%\\&%g
+s%\[%\\&%g
+s%\]%\\&%g
+s%\$%$$%g
+EOF
+DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '`
+rm -f conftest.defs
+
+
+# Without the "./", some shells look in PATH for config.status.
+: ${CONFIG_STATUS=./config.status}
+
+echo creating $CONFIG_STATUS
+rm -f $CONFIG_STATUS
+cat > $CONFIG_STATUS <<EOF
+#! /bin/sh
+# Generated automatically by configure.
+# Run this file to recreate the current configuration.
+# This directory was configured as follows,
+# on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+#
+# $0 $ac_configure_args
+#
+# Compiler output produced by configure, useful for debugging
+# configure, is in ./config.log if it exists.
+
+ac_cs_usage="Usage: $CONFIG_STATUS [--recheck] [--version] [--help]"
+for ac_option
+do
+  case "\$ac_option" in
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
+    exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
+  -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
+    echo "$CONFIG_STATUS generated by autoconf version 2.12"
+    exit 0 ;;
+  -help | --help | --hel | --he | --h)
+    echo "\$ac_cs_usage"; exit 0 ;;
+  *) echo "\$ac_cs_usage"; exit 1 ;;
+  esac
+done
+
+ac_given_srcdir=$srcdir
+ac_given_INSTALL="$INSTALL"
+
+trap 'rm -fr `echo "Makefile ext/extmk.rb" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15
+EOF
+cat >> $CONFIG_STATUS <<EOF
+
+# Protect against being on the right side of a sed subst in config.status.
+sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g;
+ s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF
+$ac_vpsub
+$extrasub
+s%@CFLAGS@%$CFLAGS%g
+s%@CPPFLAGS@%$CPPFLAGS%g
+s%@CXXFLAGS@%$CXXFLAGS%g
+s%@DEFS@%$DEFS%g
+s%@LDFLAGS@%$LDFLAGS%g
+s%@LIBS@%$LIBS%g
+s%@exec_prefix@%$exec_prefix%g
+s%@prefix@%$prefix%g
+s%@program_transform_name@%$program_transform_name%g
+s%@bindir@%$bindir%g
+s%@sbindir@%$sbindir%g
+s%@libexecdir@%$libexecdir%g
+s%@datadir@%$datadir%g
+s%@sysconfdir@%$sysconfdir%g
+s%@sharedstatedir@%$sharedstatedir%g
+s%@localstatedir@%$localstatedir%g
+s%@libdir@%$libdir%g
+s%@includedir@%$includedir%g
+s%@oldincludedir@%$oldincludedir%g
+s%@infodir@%$infodir%g
+s%@mandir@%$mandir%g
+s%@host@%$host%g
+s%@host_alias@%$host_alias%g
+s%@host_cpu@%$host_cpu%g
+s%@host_vendor@%$host_vendor%g
+s%@host_os@%$host_os%g
+s%@CC@%$CC%g
+s%@CPP@%$CPP%g
+s%@YACC@%$YACC%g
+s%@RANLIB@%$RANLIB%g
+s%@AR@%$AR%g
+s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g
+s%@INSTALL_DATA@%$INSTALL_DATA%g
+s%@SET_MAKE@%$SET_MAKE%g
+s%@LIBOBJS@%$LIBOBJS%g
+s%@ALLOCA@%$ALLOCA%g
+s%@DLDFLAGS@%$DLDFLAGS%g
+s%@STATIC@%$STATIC%g
+s%@CCDLFLAGS@%$CCDLFLAGS%g
+s%@LDSHARED@%$LDSHARED%g
+s%@DLEXT@%$DLEXT%g
+s%@STRIP@%$STRIP%g
+s%@EXTSTATIC@%$EXTSTATIC%g
+s%@binsuffix@%$binsuffix%g
+s%@setup@%$setup%g
+s%@arch@%$arch%g
+
+CEOF
+EOF
+
+cat >> $CONFIG_STATUS <<\EOF
+
+# Split the substitutions into bite-sized pieces for seds with
+# small command number limits, like on Digital OSF/1 and HP-UX.
+ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script.
+ac_file=1 # Number of current file.
+ac_beg=1 # First line for current file.
+ac_end=$ac_max_sed_cmds # Line after last line for current file.
+ac_more_lines=:
+ac_sed_cmds=""
+while $ac_more_lines; do
+  if test $ac_beg -gt 1; then
+    sed "1,${ac_beg}d; ${ac_end}q" conftest.subs > conftest.s$ac_file
+  else
+    sed "${ac_end}q" conftest.subs > conftest.s$ac_file
+  fi
+  if test ! -s conftest.s$ac_file; then
+    ac_more_lines=false
+    rm -f conftest.s$ac_file
+  else
+    if test -z "$ac_sed_cmds"; then
+      ac_sed_cmds="sed -f conftest.s$ac_file"
+    else
+      ac_sed_cmds="$ac_sed_cmds | sed -f conftest.s$ac_file"
+    fi
+    ac_file=`expr $ac_file + 1`
+    ac_beg=$ac_end
+    ac_end=`expr $ac_end + $ac_max_sed_cmds`
+  fi
+done
+if test -z "$ac_sed_cmds"; then
+  ac_sed_cmds=cat
+fi
+EOF
+
+cat >> $CONFIG_STATUS <<EOF
+
+CONFIG_FILES=\${CONFIG_FILES-"Makefile ext/extmk.rb"}
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case "$ac_file" in
+  *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
+       ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+  *) ac_file_in="${ac_file}.in" ;;
+  esac
+
+  # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
+
+  # Remove last slash and all that follows it.  Not all systems have dirname.
+  ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
+  if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
+    # The file is in a subdirectory.
+    test ! -d "$ac_dir" && mkdir "$ac_dir"
+    ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`"
+    # A "../" for each directory in $ac_dir_suffix.
+    ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'`
+  else
+    ac_dir_suffix= ac_dots=
+  fi
+
+  case "$ac_given_srcdir" in
+  .)  srcdir=.
+      if test -z "$ac_dots"; then top_srcdir=.
+      else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;;
+  /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;;
+  *) # Relative path.
+    srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix"
+    top_srcdir="$ac_dots$ac_given_srcdir" ;;
+  esac
+
+  case "$ac_given_INSTALL" in
+  [/$]*) INSTALL="$ac_given_INSTALL" ;;
+  *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
+  esac
+
+  echo creating "$ac_file"
+  rm -f "$ac_file"
+  configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure."
+  case "$ac_file" in
+  *Makefile*) ac_comsub="1i\\
+# $configure_input" ;;
+  *) ac_comsub= ;;
+  esac
+
+  ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
+  sed -e "$ac_comsub
+s%@configure_input@%$configure_input%g
+s%@srcdir@%$srcdir%g
+s%@top_srcdir@%$top_srcdir%g
+s%@INSTALL@%$INSTALL%g
+" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file
+fi; done
+rm -f conftest.s*
+
+EOF
+cat >> $CONFIG_STATUS <<EOF
+
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+
+exit 0
+EOF
+chmod +x $CONFIG_STATUS
+rm -fr confdefs* $ac_clean_files
+test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1
+
diff --git a/configure.ac b/configure.ac
deleted file mode 100644
index f7bbc36366..0000000000
--- a/configure.ac
+++ /dev/null
@@ -1,4273 +0,0 @@
-dnl Process this file with autoconf to produce a configure script.
-AC_INIT()
-{
-AC_CONFIG_AUX_DIR(tool)
-AC_CONFIG_MACRO_DIRS(tool/m4)
-
-AC_PREREQ(2.67)
-
-tooldir="$srcdir/tool"
-
-dnl   override AC_CHECKING
-dnl   placed here due to aclocal(1)'s
-dnl   ignoring this definition in separate files
-AC_DEFUN([AC_CHECKING],[dnl
-AC_REQUIRE([_COLORIZE_RESULT_PREPARE])dnl
-AS_MESSAGE([checking ${msg_checking}$1${msg_reset}...])])dnl
-
-AC_DISABLE_OPTION_CHECKING
-
-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*], [
-    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:$PATH])
-],
-[darwin*], [
-    AS_IF([libtool 2>&1 | grep no_warning_for_no_symbols > /dev/null], [
-        ac_cv_prog_ac_ct_RANLIB=:
-        ac_cv_prog_ac_ct_AR='libtool -static'
-        rb_cv_arflags='-no_warning_for_no_symbols -o'
-    ])
-])
-AS_CASE(["${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'
-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 $CXX to "g++" when it purposefully finds that there is
-    # _no_ g++.  This brain-damaged design must be worked around.  Thankfully,
-    # similar thing doesn't happen for AC_PROG_CC.
-    AC_MSG_NOTICE([C++ features disabled due to lack of a C++ compiler.])
-    AS_UNSET(CXX)
-])
-
-test x"$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])
-
-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)
-    AS_IF([! $CC -E -xc - <<SRC >/dev/null], [
-	@%:@if defined __APPLE_CC__ && defined __clang_major__ && __clang_major__ < 3
-	@%:@error premature clang
-	@%:@endif
-SRC
-	AC_MSG_ERROR([clang version 3.0 or later is required])
-    ])
-])
-
-AS_CASE(["$target_os"],
-[darwin*], [
-    AC_MSG_CHECKING(if minimum required OS X version is supported)
-    AC_TRY_CPP([@%:@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 "$universal_binary" = no], [
-    RUBY_DEFAULT_ARCH("$target_cpu")
-])
-
-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 "$rb_cv_msvcrt" = "" && unset rb_cv_msvcrt
-	AC_CACHE_CHECK(for mingw32 runtime DLL, rb_cv_msvcrt, [
-	AC_TRY_LINK([@%:@include <stdio.h>],
-		    [FILE* volatile f = stdin; return 0;],
-		    [rb_cv_msvcrt=`$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 "${PKG_CONFIG}" || break
-done
-
-# checks for UNIX variants that set C preprocessor variables
-AC_USE_SYSTEM_EXTENSIONS
-
-AC_MSG_CHECKING([whether it is Android])
-AC_TRY_COMPILE([
-	@%:@ifdef __ANDROID__
-	@%:@error android
-	@%:@endif
-], [],
-[AC_MSG_RESULT(no)],
-[
-	AC_MSG_RESULT(yes)
-	target_os=${target_os}-android
-	AC_MSG_CHECKING([for Android API version])
-	AC_TRY_COMPILE([
-		@%:@ifndef __ANDROID_API__
-		@%:@error android
-		@%:@endif
-	], [],
-	[AC_MSG_RESULT(defined by the compiler)],
-	[
-		rb_android_api=`getprop ro.build.version.sdk`
-		AC_MSG_RESULT($rb_android_api)
-		RUBY_APPEND_OPTIONS(CPPFLAGS, -D__ANDROID_API__=$rb_android_api)
-	])
-])
-
-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$$.dir
-AC_MSG_RESULT([$CHDIR])
-AC_SUBST(CHDIR)
-}
-
-: "compiler section" && {
-RUBY_WERROR_FLAG([
-    AC_MSG_CHECKING([whether CFLAGS is valid])
-    AC_TRY_COMPILE([], [],
-	[AC_MSG_RESULT(yes)],
-	[
-	AC_MSG_RESULT(no)
-	AC_MSG_ERROR([something wrong with CFLAGS="$CFLAGS"])
-	]
-    )
-
-    AC_MSG_CHECKING([whether LDFLAGS is valid])
-    {
-	mkdir tmp.$$.try_link &&
-	cd tmp.$$.try_link &&
-	cp ../confdefs.h . &&
-	echo '<?xml?><plist><dict><key>CFBundleIdentifier</key><string></string></dict></plist>' > Info.plist &&
-	:
-    } || AC_MSG_ERROR([failed to make temporary directory])
-    AC_TRY_LINK([], [],
-	[AC_MSG_RESULT(yes)],
-	[
-	cd .. && rm -fr tmp.$$.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(-D_FORTIFY_SOURCE=2, [RUBY_APPEND_OPTION(XCFLAGS, -D_FORTIFY_SOURCE=2)])
-    ])
-
-    : ${MJIT_HEADER_FLAGS='-P -dD'}
-
-    # -fstack-protector
-    AS_CASE(["$target_os"],
-    [mingw*], [
-	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="$CFLAGS -Werror -Wuninitialized"
-	  ])
-	  AC_TRY_COMPILE([@%:@include <math.h>
-	    int foo(double x)
-	    {
-	      int exp;
-	      frexp(x, &exp);
-	      return exp;
-	    }], [if (foo(0.0)) return 1;],
-	    [rb_cv_mingw64_broken_frexp_modf=no],
-	    [rb_cv_mingw64_broken_frexp_modf=yes])
-	  CFLAGS="$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_TRY_LINK([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_TRY_LINK([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 $ARCH_FLAG\""
-}
-
-AC_CACHE_CHECK([whether compiler has statement and declarations in expressions],
-  rb_cv_have_stmt_and_decl_in_expr,
-  [AC_TRY_COMPILE([],[ __extension__ ({ int a = 0; a; }); ],
-  [rb_cv_have_stmt_and_decl_in_expr=yes],
-  [rb_cv_have_stmt_and_decl_in_expr=no])])
-AS_IF([test "$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_TRY_CPP([
-#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_TRY_COMPILE([@%:@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_TRY_RUN([
-#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 $LIBS"
-		ac_cv_func_vfork=no
-		AC_MSG_CHECKING(whether _XOPEN_SOURCE is already given)
-		AC_TRY_COMPILE([#include <unistd.h>
-			#ifndef _XOPEN_SOURCE
-			#error _XOPEN_SOURCE is not defined
-			#endif
-			], [],
-		        [given_xopen_source=yes], [given_xopen_source=no])
-		AC_MSG_RESULT($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_TRY_COMPILE([
-			#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=$define_xopen_source)
-		  ])
-		])
-		],
-[haiku*], [
-		LIBS="$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 "${CXX}"], [
-    RUBY_WERROR_FLAG([
-        AC_MSG_CHECKING([whether CXXFLAGS is valid])
-        AC_LANG_PUSH(C++)
-        AC_TRY_COMPILE([@%:@include <cstdio>], [], [AC_MSG_RESULT(yes)], [
-            AC_MSG_RESULT(no)
-            # The message mentions CXXFLAGS, but CPPFLAGS might also affects.
-            AC_MSG_WARN([something wrong with CXXFLAGS="$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)
-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_TRY_COMPILE([@%:@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])
-
-AC_CACHE_CHECK(for prototypes, rb_cv_have_prototypes,
-  [AC_TRY_COMPILE([int foo(int x) { return 0; }], [return foo(10);],
-	rb_cv_have_prototypes=yes,
-	rb_cv_have_prototypes=no)])
-AS_IF([test "$rb_cv_have_prototypes" = yes], [
-  AC_DEFINE(HAVE_PROTOTYPES)
-])
-
-AC_CACHE_CHECK(token paste string, rb_cv_tokenpaste,
-  [AC_TRY_COMPILE([@%:@define paste(a,b) a@%:@@%:@b],
-		  [int xy = 1; return paste(x,y);],
-		  rb_cv_tokenpaste=ansi,
-		  rb_cv_tokenpaste=knr)])
-AS_IF([test "$rb_cv_tokenpaste" = ansi], [
-  AC_DEFINE(TOKEN_PASTE(x,y),[x@%:@@%:@y])
-], [
-  AC_DEFINE(TOKEN_PASTE(x,y),[x/**/y])
-])
-
-AC_CACHE_CHECK(stringization, rb_cv_stringization, [
-  rb_cv_stringization=no
-  for string in "#expr" '"expr"'; do
-    AC_COMPILE_IFELSE([
-      AC_LANG_BOOL_COMPILE_TRY([
-#define STRINGIZE0(expr) $string
-#define STRINGIZE(expr) STRINGIZE0(expr)
-#undef real_test_for_stringization
-#define test_for_stringization -.real_test_for_stringization.-
-const char stringized[[]] = STRINGIZE(test_for_stringization);
-], [sizeof(stringized) == 32])],
-      [rb_cv_stringization="$string"; break],
-      [rb_cv_stringization=no])
-  done]
-)
-AC_DEFINE(STRINGIZE(expr),STRINGIZE0(expr))
-AS_IF([test x"$rb_cv_stringization" != xno -a "$rb_cv_stringization" != "#expr"], [
-  AC_DEFINE_UNQUOTED(STRINGIZE0(expr),$rb_cv_stringization)
-  AC_DEFINE(OLD_FASHIONED_STRINGIZATION,1)
-])
-
-AC_CACHE_CHECK([string literal concatenation],
-  rb_cv_string_literal_concatenation, [
-  AC_COMPILE_IFELSE([
-    AC_LANG_BOOL_COMPILE_TRY([
-const char concatenated_literal[[]] = "literals" "to"
-  "be" "concatenated.";
-], [sizeof(concatenated_literal) == 26])],
-    [rb_cv_string_literal_concatenation=yes],
-    [rb_cv_string_literal_concatenation=no])]
-)
-AS_IF([test "$rb_cv_string_literal_concatenation" = no], [
-  AC_MSG_ERROR([No string literal concatenation])
-])
-
-AC_CACHE_CHECK(for variable length prototypes and stdarg.h, rb_cv_stdarg,
-  [AC_TRY_COMPILE([
-#include <stdarg.h>
-int foo(int x, ...) {
-	va_list va;
-	va_start(va, x);
-	va_arg(va, int);
-	va_arg(va, char *);
-	va_arg(va, double);
-	return 0;
-}
-], [return foo(10, "", 3.14);],
-	rb_cv_stdarg=yes,
-	rb_cv_stdarg=no)])
-AS_IF([test "$rb_cv_stdarg" = yes], [
-  AC_DEFINE(HAVE_STDARG_PROTOTYPES)
-])
-
-# __VA_ARGS__ is also tested in AC_PROG_CC_C99 since autoconf 2.60a (around
-# 2006). The check below is redundant and should always success.  Remain not
-# deleted for backward compat.
-AC_CACHE_CHECK(for variable length macro, rb_cv_va_args_macro,
-  [AC_TRY_COMPILE([
-int foo(const char*);
-@%:@define FOO(...) foo(@%:@__VA_ARGS__)
-], [FOO(1);FOO(1,2);FOO(1,2,3);],
-  rb_cv_va_args_macro=yes,
-  rb_cv_va_args_macro=no)])
-AS_IF([test "$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_TRY_COMPILE([
-            @%:@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_TRY_LINK([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_TRY_LINK([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 "$rb_cv_gcc_atomic_builtins" = yes], [
-	AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS)
-    ])
-
-    AC_CACHE_CHECK([for __sync builtins], [rb_cv_gcc_sync_builtins], [
-	AC_TRY_LINK([unsigned int atomic_var;],
-		    [
-			__sync_lock_test_and_set(&atomic_var, 0);
-			__sync_lock_test_and_set(&atomic_var, 1);
-			__sync_fetch_and_add(&atomic_var, 1);
-			__sync_fetch_and_sub(&atomic_var, 1);
-			__sync_or_and_fetch(&atomic_var, 1);
-			__sync_val_compare_and_swap(&atomic_var, 0, 1);
-		    ],
-		    [rb_cv_gcc_sync_builtins=yes],
-		    [rb_cv_gcc_sync_builtins=no])])
-    AS_IF([test "$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_TRY_LINK([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_TRY_COMPILE([@%:@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([--disable-mathn], [disable canonicalization for mathn]),
-    [mathn=$enableval], [mathn=yes])
-test "x$mathn" = xyes || mathn=
-AC_SUBST(MATHN, $mathn)
-
-AC_CACHE_CHECK(for function name string predefined identifier,
-    rb_cv_function_name_string,
-    [AS_CASE(["$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_TRY_LINK([@%:@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=${ac_cv_header_sys_socket_h=yes}
-])
-
-
-AC_TYPE_SIZE_T
-RUBY_CHECK_SIGNEDNESS(size_t, [AC_MSG_ERROR(size_t is signed)], [],
-		      [@%:@include <sys/types.h>])
-RUBY_CHECK_SIZEOF(size_t, [int long void*], [], [@%:@include <sys/types.h>])
-RUBY_CHECK_SIZEOF(ptrdiff_t, size_t, [], [@%:@include <stddef.h>])
-RUBY_CHECK_PRINTF_PREFIX(size_t, z)
-RUBY_CHECK_PRINTF_PREFIX(ptrdiff_t, t)
-AC_STRUCT_ST_BLKSIZE
-AC_STRUCT_ST_BLOCKS
-AC_STRUCT_ST_RDEV
-RUBY_CHECK_SIZEOF([struct stat.st_size], [off_t int long "long long"], [], [@%:@include <sys/stat.h>])
-AS_IF([test "$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_TRY_LINK(
-    [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, $rb_cv_stack_end_address)
-])
-
-dnl Checks for library functions.
-AC_TYPE_GETGROUPS
-AC_TYPE_SIGNAL
-AS_CASE(["${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_TRY_LINK([
-	    @%:@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_TRY_LINK([
-#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_TRY_RUN([
-@%:@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 "$ac_cv_func_qsort_r" != no], [
-  AC_CACHE_CHECK(whether qsort_r is GNU version, rb_cv_gnu_qsort_r,
-    [AC_TRY_COMPILE([
-@%:@include <stdlib.h>
-void (qsort_r)(void *base, size_t nmemb, size_t size,
-	    int (*compar)(const void *, const void *, void *),
-	    void *arg);
-],[ ],
-      [rb_cv_gnu_qsort_r=yes],
-      [rb_cv_gnu_qsort_r=no])
-  ])
-  AC_CACHE_CHECK(whether qsort_r is BSD version, rb_cv_bsd_qsort_r,
-    [AC_TRY_COMPILE([
-@%:@include <stdlib.h>
-void (qsort_r)(void *base, size_t nmemb, size_t size,
-	     void *arg, int (*compar)(void *, const void *, const void *));
-],[ ],
-      [rb_cv_bsd_qsort_r=yes],
-      [rb_cv_bsd_qsort_r=no])
-  ])
-  AS_CASE("$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_TRY_RUN([
-@%:@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_TRY_COMPILE([
-#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 "$use_setreuid" = yes], [
-    AC_DEFINE(USE_SETREUID)
-    AC_DEFINE(USE_SETREGID)
-])
-AC_STRUCT_TIMEZONE
-AC_CACHE_CHECK(for struct tm.tm_gmtoff, rb_cv_member_struct_tm_tm_gmtoff,
-  [AC_TRY_COMPILE([
-@%:@define _BSD_SOURCE
-@%:@define _DEFAULT_SOURCE
-@%:@include <time.h>
-   ],
-    [struct tm t; t.tm_gmtoff = 3600;],
-  [rb_cv_member_struct_tm_tm_gmtoff=yes],
-  [rb_cv_member_struct_tm_tm_gmtoff=no])])
-AS_IF([test "$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_TRY_LINK([#include <time.h>
-  int i;],
-	[i = daylight;],
-	rb_cv_have_daylight=yes,
-	rb_cv_have_daylight=no)])
-AS_IF([test "$rb_cv_have_daylight" = yes], [
-  AC_DEFINE(HAVE_DAYLIGHT)
-])
-
-AC_CACHE_CHECK(for negative time_t for gmtime(3), rb_cv_negative_time_t,
-  [AC_TRY_RUN([
-#include <stdlib.h>
-#include <time.h>
-
-void
-check(tm, y, m, d, h, s)
-    struct tm *tm;
-    int y, m, d, h, s;
-{
-    if (!tm ||
-	tm->tm_year != y ||
-	tm->tm_mon  != m-1 ||
-	tm->tm_mday != d ||
-	tm->tm_hour != h ||
-	tm->tm_sec  != s) {
-	exit(1);
-    }
-}
-
-int
-main()
-{
-   time_t t = -1;
-   struct tm *tm;
-
-   check(gmtime(&t), 69, 12, 31, 23, 59);
-   t = ~(time_t)0 << 31;
-   check(gmtime(&t), 1, 12, 13, 20, 52);
-   return 0;
-}
-],
-	rb_cv_negative_time_t=yes,
-	rb_cv_negative_time_t=no,
-	rb_cv_negative_time_t=yes)])
-AS_IF([test "$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_TRY_RUN([
-#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 "$ac_cv_func_sigaction" = yes], [
-   AC_DEFINE(POSIX_SIGNAL)
-], [
-  AC_CHECK_FUNCS(sigsetmask)
-  AC_CACHE_CHECK(for BSD signal semantics, rb_cv_bsd_signal,
-    [AC_TRY_RUN([
-#include <stdio.h>
-#include <signal.h>
-
-void
-sig_handler(dummy)
-     int dummy;
-{
-}
-
-int
-main()
-{
-  signal(SIGINT, sig_handler);
-  kill(getpid(), SIGINT);
-  kill(getpid(), SIGINT);
-  return 0;
-}
-],
-	rb_cv_bsd_signal=yes,
-	rb_cv_bsd_signal=no,
-	rb_cv_bsd_signal=$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_TRY_RUN([
-#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(["$ac_cv_sizeof_voidp"],
-                [8], [ rb_cv_coroutine=amd64 ],
-                [4], [ rb_cv_coroutine=x86 ],
-                dnl unknown pointer size, bail out as no Context.h soon.
-            )
-        ],
-        [*86-linux*], [
-            rb_cv_coroutine=x86
-        ],
-        [x64-mingw32], [
-            rb_cv_coroutine=win64
-        ],
-        [*86-mingw32], [
-            rb_cv_coroutine=win32
-        ],
-        [arm*-linux*], [
-            rb_cv_coroutine=arm32
-        ],
-        [aarch64-linux*], [
-            rb_cv_coroutine=arm64
-        ],
-        [powerpc64le-linux*], [
-            rb_cv_coroutine=ppc64le
-        ],
-        [x86_64-openbsd*], [
-            rb_cv_coroutine=amd64
-        ],
-        [i386-openbsd*], [
-            rb_cv_coroutine=x86
-        ],
-        [*-openbsd*], [
-            rb_cv_coroutine=copy
-        ],
-        [
-            rb_cv_coroutine=ucontext
-        ]
-    )
-    AC_MSG_RESULT(${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 $LIBS"])
-    ], [
-	AC_MSG_WARN("Don't know how to find pthread library on your system -- thread support disabled")
-    ])
-    AC_CACHE_CHECK([whether pthread_t is scalar type], [rb_cv_scalar_pthread_t], [
-	AC_TRY_COMPILE([
-	    @%:@include <pthread.h>
-	    ], [
-	    pthread_t thread_id;
-	    thread_id = 0;
-	    if (!thread_id) return 0;
-	    ], [rb_cv_scalar_pthread_t=yes], [rb_cv_scalar_pthread_t=no])
-    ])
-    AS_IF([test x"$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_TRY_COMPILE([
-		    @%:@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_TRY_COMPILE([@%:@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"$rb_cv_ucontext_in_signal_h" = xyes], [
-    AC_CACHE_CHECK([if mcontext_t is a pointer], [rb_cv_mcontext_t_ptr],
-	[AC_TRY_COMPILE([
-	    @%:@include <signal.h>
-	    @%:@ifdef HAVE_UCONTEXT_H
-	    @%:@include <ucontext.h>
-	    @%:@endif
-        mcontext_t test(mcontext_t mc) {return mc+1;}
-	],
-	[test(0);],
-	[rb_cv_mcontext_t_ptr=yes], [rb_cv_mcontext_t_ptr=no])])
-    AS_IF([test x"$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 "$rb_with_pthread" = "yes"], [
-    AC_CACHE_CHECK([if fork works with pthread], rb_cv_fork_with_pthread,
-	[AC_TRY_RUN([
-#include <stdlib.h>
-#include <unistd.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
-#ifndef EXIT_SUCCESS
-#define EXIT_SUCCESS 0
-#endif
-#ifndef EXIT_FAILURE
-#define EXIT_FAILURE 1
-#endif
-
-void *
-thread_func(void *dmy)
-{
-    return dmy;
-}
-
-int
-use_threads(void)
-{
-    pthread_t tid;
-    if (pthread_create(&tid, 0, thread_func, 0) != 0) {
-	return -1;
-    }
-    if (pthread_join(tid, 0) != 0) {
-	return -1;
-    }
-    return 0;
-}
-
-int
-main(int argc, char *argv[])
-{
-    pid_t pid;
-    if (use_threads()) return EXIT_FAILURE;
-    pid = fork();
-
-    if (pid) {
-	int loc;
-	sleep(1);
-	if (waitpid(pid, &loc, WNOHANG) == 0) {
-	    kill(pid, SIGKILL);
-	    return EXIT_FAILURE;
-	}
-        if (!WIFEXITED(loc) || WEXITSTATUS(loc) != EXIT_SUCCESS)
-           return EXIT_FAILURE;
-    }
-    else {
-	if (use_threads()) return EXIT_FAILURE;
-    }
-
-    return EXIT_SUCCESS;
-}],
-	rb_cv_fork_with_pthread=yes,
-	rb_cv_fork_with_pthread=no,
-	rb_cv_fork_with_pthread=yes)])
-    test x$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_TRY_LINK([],[], [
-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 $ac_cv_header_elf_abi_h = yes], [
-    AC_LIBOBJ([addr2line])
-    AS_IF([test "x$compress_debug_sections" = xzlib], [
-      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_TRY_RUN([
-#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_TRY_COMPILE([
-#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="${STRIP} -S -x"
-        ], [
-            AC_MSG_RESULT([none needed])
-        ])
-    ])
-])
-
-
-AC_ARG_WITH(ext,
-            AC_HELP_STRING([--with-ext=EXTS],
-                           [pass to --with-ext option of extmk.rb]))
-AC_ARG_WITH(out-ext,
-            AC_HELP_STRING([--with-out-ext=EXTS],
-                           [pass to --without-ext option of extmk.rb]))
-EXTSTATIC=
-AC_SUBST(EXTSTATIC)dnl
-AC_ARG_WITH(static-linked-ext,
-	    AS_HELP_STRING([--with-static-linked-ext], [link external modules statically]),
-            [AS_CASE([$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}'}
-
-  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(["${enable_dtrace}"],
-[yes|auto], [
-    RUBY_DTRACE_AVAILABLE()
-], [
-    rb_cv_dtrace_available=no
-])
-AS_IF([test "${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 "$rb_with_pthread" = "yes"], [
-    THREAD_MODEL=pthread
-])
-AC_CACHE_CHECK([for prefix of external symbols], rb_cv_symbol_prefix, [
-    AC_TRY_COMPILE([extern void conftest_external(void) {}], [], [
-	rb_cv_symbol_prefix=`$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$SYMBOL_PREFIX" = xNONE && SYMBOL_PREFIX=''
-DLNOBJ=dln.o
-AC_ARG_ENABLE(dln,
-	      AC_HELP_STRING([--disable-dln], [disable dynamic link feature]),
-	      [test "$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_TRY_COMPILE([@%:@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_TRY_COMPILE([@%:@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_TRY_COMPILE([@%:@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='$GIT'])
-
-AC_ARG_WITH([ruby-pc],
-	    AC_HELP_STRING([--with-ruby-pc=FILENAME], [pc file basename]),
-	    [ruby_pc="$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.bat b/configure.bat
new file mode 100644
index 0000000000..35f9d4893d
--- /dev/null
+++ b/configure.bat
@@ -0,0 +1,5 @@
+@echo off
+sed -f top.sed Makefile.in >Makefile
+sed -f top.sed ext/extmk.rb.in > ext\extmk.rb
+copy ext\Setup.dj ext\Setup
+copy config.dj config.h
diff --git a/configure.in b/configure.in
new file mode 100644
index 0000000000..6dc56e2b49
--- /dev/null
+++ b/configure.in
@@ -0,0 +1,490 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_INIT(ruby.h)
+
+dnl checks for alternative programs
+AC_ARG_WITH(gcc, [--without-gcc             never use gcc], [
+	case $withval in
+	no)	CC=cc
+		without_gcc=yes;;
+	yes)	CC=gcc
+		without_gcc=no;;
+	*)	CC=$withval
+		without_gcc=$withval;;
+	esac], [without_gcc=no])
+dnl If the user switches compilers, we can't believe the cache
+if test ! -z "$ac_cv_prog_CC" -a ! -z "$CC" -a "$CC" != "$ac_cv_prog_CC"
+then
+  AC_ERROR(cached CC is different -- throw away $cache_file
+(it is also a good idea to do 'make clean' before compiling))
+fi
+
+dnl checks for thread
+rb_thread=yes
+AC_ARG_ENABLE(thread, [--disable-thread          never use user-level thread], [
+	rb_thread=$enableval
+])
+if test $rb_thread = yes; then
+  AC_DEFINE(THREAD)
+fi
+
+AC_CANONICAL_HOST
+
+
+dnl checks for fat-binary
+fat_binary=no
+AC_ARG_ENABLE( fat-binary,
+       [--enable-fat-binary       build a NeXT Multi Architecture Binary. ],
+       [ fat_binary=$enableval ] )
+if test "$fat_binary" = yes ; then
+
+    AC_MSG_CHECKING( target architecture )
+
+    if test "$TARGET_ARCHS" = "" ; then
+        if test `/usr/bin/arch` = "m68k" ; then
+            TARGET_ARCHS="m68k i486"
+        else
+            TARGET_ARCHS="m68k `/usr/bin/arch`"
+        fi
+    fi
+    # /usr/lib/arch_tool -archify_list $TARGET_ARCHS
+    for archs in $TARGET_ARCHS 
+    do
+        ARCH_FLAG="$ARCH_FLAG -arch $archs "
+        echo -n " $archs"
+    done
+    AC_DEFINE( NEXT_FAT_BINARY )
+    echo "."
+fi 
+
+
+AC_ARG_PROGRAM
+
+dnl Checks for programs.
+AC_PROG_CC
+AC_PROG_GCC_TRADITIONAL
+AC_PROG_YACC
+AC_PROG_RANLIB
+AC_SUBST(AR)
+AC_CHECK_PROGS(AR, ar aal, ar)
+AC_PROG_INSTALL
+AC_PROG_MAKE_SET
+
+# checks for UNIX variants that set C preprocessor variables
+AC_MINIX
+
+dnl Checks for libraries.
+case "$host_os" in
+nextstep*)	;;
+human*)		;;
+*) LIBS="-lm $LIBS";;
+esac
+AC_CHECK_LIB(crypt, crypt)
+AC_CHECK_LIB(dl, dlopen)	# Dynamic linking for SunOS/Solaris and SYSV
+AC_CHECK_LIB(dld, shl_load)	# Dynamic linking for HP-UX
+
+dnl Checks for header files.
+AC_HEADER_DIRENT
+AC_HEADER_STDC
+AC_CHECK_HEADERS(stdlib.h unistd.h limits.h sys/file.h sys/ioctl.h pwd.h \
+		 sys/select.h sys/time.h sys/times.h sys/param.h sys/wait.h\
+		 syscall.h a.out.h string.h utime.h memory.h)
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_UID_T
+AC_TYPE_SIZE_T
+AC_STRUCT_ST_BLKSIZE
+save_LIBOJBS="$LIBOBJS"
+AC_STRUCT_ST_BLOCKS
+LIBOBJS="$save_LIBOBJS"
+AC_STRUCT_ST_RDEV
+
+AC_CHECK_SIZEOF(short)
+AC_CHECK_SIZEOF(int)
+AC_CHECK_SIZEOF(long)
+AC_CHECK_SIZEOF(void*)
+
+dnl Checks for library functions.
+AC_TYPE_GETGROUPS
+AC_TYPE_SIGNAL
+AC_FUNC_ALLOCA
+AC_FUNC_VFORK
+AC_FUNC_MEMCMP
+AC_REPLACE_FUNCS(dup2 setenv memmove mkdir strcasecmp strerror strftime\
+		 strchr strstr strtoul strdup crypt flock)
+AC_CHECK_FUNCS(fmod killpg random wait4 waitpid syscall getcwd\
+	      truncate chsize times utimes fcntl lockf setitimer\
+	      setruid seteuid setreuid setrgid setegid setregid\
+	      setpgrp2 getpgid getgroups getpriority\
+	      dlopen sigprocmask sigaction _setjmp)
+if test "$ac_cv_func_strftime" = no; then
+    AC_STRUCT_TIMEZONE
+    AC_TRY_LINK([],
+	 [extern int daylight; int i = daylight;], AC_DEFINE(HAVE_DAYLIGHT))
+fi
+
+if test "$ac_cv_func_sigprocmask" = yes && test "$ac_cv_func_sigaction" = yes; then
+   AC_DEFINE(POSIX_SIGNAL)
+else
+  AC_MSG_CHECKING(for BSD signal semantics)
+  AC_CACHE_VAL(rb_cv_bsd_signal,
+    [AC_TRY_RUN([
+#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)])
+  AC_MSG_RESULT($rb_cv_bsd_signal)
+  if test "$rb_cv_bsd_signal" = yes; then
+    AC_DEFINE(BSD_SIGNAL)
+  fi
+fi
+
+if test "$ac_cv_func_setpgrp2" = yes; then
+  AC_DEFINE(BSD_GETPGRP, getpgrp2)
+  AC_DEFINE(BSD_SETPGRP, setpgrp2)
+else
+  AC_MSG_CHECKING(whether getpgrp() has arg)
+  AC_CACHE_VAL(rb_cv_bsdgetpgrp,
+    [AC_TRY_COMPILE([#include <unistd.h>], [getpgrp(0);],
+      rb_cv_bsdgetpgrp=yes,
+      rb_cv_bsdgetpgrp=no)])
+  AC_MSG_RESULT($rb_cv_bsdgetpgrp)
+  if test "$rb_cv_bsdgetpgrp" = yes; then
+    AC_DEFINE(BSD_GETPGRP, getpgrp)
+  fi
+
+  AC_MSG_CHECKING(whether setpgrp() has args)
+  AC_CACHE_VAL(rb_cv_bsdsetpgrp,
+    [AC_TRY_COMPILE([#include <unistd.h>], [setpgrp(1, 1);],
+	rb_cv_bsdsetpgrp=yes,
+	rb_cv_bsdsetpgrp=no)])
+  AC_MSG_RESULT($rb_cv_bsdsetpgrp)
+  if test "$rb_cv_bsdsetpgrp" = yes; then
+    AC_DEFINE(BSD_SETPGRP, setpgrp)
+  fi
+fi
+
+AC_C_BIGENDIAN
+AC_CHAR_UNSIGNED
+
+AC_MSG_CHECKING([count field in FILE structures])
+AC_CACHE_VAL(rb_cv_fcnt,
+[AC_TRY_COMPILE([#include <stdio.h>],
+	[FILE *f = stdin; f->_cnt = 0;], rb_cv_fcnt="_cnt", )
+if test "$rb_cv_fcnt" = ""; then
+    AC_TRY_COMPILE([#include <stdio.h>],
+	[FILE *f = stdin; f->__cnt = 0;], rb_cv_fcnt="__cnt", )
+fi
+if test "$rb_cv_fcnt" = ""; then
+    AC_TRY_COMPILE([#include <stdio.h>],
+	[FILE *f = stdin; f->_r = 0;], rb_cv_fcnt="_r", )
+fi
+if test "$rb_cv_fcnt" = ""; then
+    AC_TRY_COMPILE([#include <stdio.h>],
+	[FILE *f = stdin; f->readCount = 0;],
+	rb_cv_fcnt="readCount", rb_cv_fcnt="not found")
+fi])
+if test "$rb_cv_fcnt" = "not found"; then
+  AC_MSG_RESULT([not found(OK if using GNU libc)])
+else
+  AC_MSG_RESULT($rb_cv_fcnt)
+  AC_DEFINE_UNQUOTED(FILE_COUNT, $rb_cv_fcnt)
+fi
+
+if test "$ac_cv_func_getpwent" = yes; then
+  AC_MSG_CHECKING(struct passwd)
+  AC_EGREP_HEADER(pw_change, pwd.h, AC_DEFINE(PW_CHANGE))
+  AC_EGREP_HEADER(pw_quota, pwd.h, AC_DEFINE(PW_QUOTA))
+  AC_EGREP_HEADER(pw_age, pwd.h, AC_DEFINE(PW_AGE))
+  AC_EGREP_HEADER(pw_class, pwd.h, AC_DEFINE(PW_CLASS))
+  AC_EGREP_HEADER(pw_comment, pwd.h, AC_DEFINE(PW_COMMENT))
+  AC_EGREP_HEADER(pw_expire, pwd.h, AC_DEFINE(PW_EXPIRE))
+  AC_MSG_RESULT(done)
+fi
+
+dnl wheather use dln_a_out ot not
+AC_ARG_WITH(dln-a-out, [--with-dln-a-out          use dln_a_out if possible], [
+	case $withval in
+	yes) with_dln_a_out=yes;;
+	*)   with_dln_a_out=no;;
+	esac], [with_dln_a_out=no])
+
+case "$host_os" in
+    linux*)
+  AC_MSG_CHECKING(whether ELF binaries are produced)
+  AC_CACHE_VAL(rb_cv_linux_elf,
+  [AC_TRY_RUN([
+/* Test for whether ELF binaries are produced */
+#include <fcntl.h>
+#include <stdlib.h>
+main() {
+	char buffer[4];
+	int i=open("conftest",O_RDONLY);
+	if(i==-1)
+		exit(1); /* fail */
+	if(read(i,&buffer[0],4)<4)
+		exit(1); /* fail */
+	if(buffer[0] != 127 || buffer[1] != 'E' ||
+           buffer[2] != 'L' || buffer[3] != 'F')
+		exit(1); /* fail */
+	exit(0); /* succeed (yes, it's ELF) */
+}
+],
+	rb_cv_linux_elf=yes,
+	rb_cv_linux_elf=no,
+	[:])])
+  AC_MSG_RESULT($rb_cv_linux_elf)
+  if test "$rb_cv_linux_elf" = no; then
+    with_dln_a_out=yes
+    host_os=linux-a.out
+  else
+    LDFLAGS="-rdynamic"
+  fi;;
+esac
+
+AC_SUBST(DLDFLAGS)dnl
+
+AC_SUBST(STATIC)dnl
+AC_SUBST(CCDLFLAGS)dnl
+AC_SUBST(LDSHARED)dnl
+AC_SUBST(DLEXT)dnl
+
+STATIC=
+
+if test "$with_dln_a_out" != yes; then
+  rb_cv_dlopen=unknown
+  AC_MSG_CHECKING(whether OS depend dynamic link works)
+  if test "$GCC" = yes; then
+    case "$host_os" in
+    nextstep*)	;;
+    human*)	;;
+    *) CCDLFLAGS=-fpic;;
+    esac
+  else
+    case "$host_os" in
+	hpux*)		CCDLFLAGS='+z';;
+	solaris*|irix*)	CCDLFLAGS='-K pic' ;;
+	sunos*)		CCDLFLAGS='-pic' ;;
+	esix*|uxpds*)   CCDLFLAGS='-Kpic' ;;
+	*)		CCDLFLAGS='' ;;
+    esac
+  fi
+
+  case "$host_os" in
+	hpux*)		DLDFLAGS="-E"
+			LDSHARED='ld -b'
+			LDFLAGS="-Wl,-E"
+			rb_cv_dlopen=yes;;
+	solaris*) 	LDSHARED='ld -G'
+			rb_cv_dlopen=yes;;
+	sunos*) 	LDSHARED='ld -assert nodefinitions'
+			rb_cv_dlopen=yes;;
+	irix*) 	 	LDSHARED='ld -ignore_unresolved'
+			rb_cv_dlopen=yes;;
+	sysv4*) 	LDSHARED='ld -G'
+			rb_cv_dlopen=yes;;
+	esix*|uxpds*) 	LDSHARED="ld -G"
+			rb_cv_dlopen=yes ;;
+	linux*) 	LDSHARED="gcc -shared"
+			rb_cv_dlopen=yes ;;
+	freebsd*) 	LDSHARED="ld -Bshareable"
+			rb_cv_dlopen=yes ;;
+	netbsd*) 	LDSHARED="ld -Bshareable"
+			rb_cv_dlopen=yes ;;
+	openbsd*) 	LDSHARED="ld -Bshareable"
+			rb_cv_dlopen=yes ;;
+	nextstep*)	LDSHARED='cc -r'
+			LDFLAGS="-u libsys_s"
+			DLDFLAGS="$ARCH_FLAG" 
+			rb_cv_dlopen=yes ;;
+	aix*)		LDSHARED='../../miniruby ../aix_ld.rb $(TARGET)'
+			rb_cv_dlopen=yes ;;
+	human*)		DLDFLAGS=''
+			LDSHARED=''
+			LDFLAGS='' ;;
+	*) 		LDSHARED='ld' ;;
+  esac
+  AC_MSG_RESULT($rb_cv_dlopen)
+fi
+
+dln_a_out_works=no
+if test "$ac_cv_header_a_out_h" = yes; then
+  if test "$with_dln_a_out" = yes || test "$rb_cv_dlopen" = unknown; then
+    AC_MSG_CHECKING(whether matz's dln works)
+    cat confdefs.h > config.h
+    AC_CACHE_VAL(rb_cv_dln_a_out,
+    [AC_TRY_COMPILE([
+#define USE_DLN_A_OUT
+#include "dln.c"
+],
+	[], 
+	rb_cv_dln_a_out=yes,
+	rb_cv_dln_a_out=no)])
+    AC_MSG_RESULT($rb_cv_dln_a_out)
+    if test "$rb_cv_dln_a_out" = yes; then
+      dln_a_out_works=yes
+      AC_DEFINE(USE_DLN_A_OUT)
+    fi
+  fi
+fi
+
+if test "$dln_a_out_works" = yes; then
+  if test "$GCC" = yes; then
+    STATIC=-static
+  else
+    STATIC=-Bstatic
+  fi
+  DLEXT=o
+  AC_DEFINE(DLEXT, ".o")
+  CCDLFLAGS=
+else
+  case "$host_os" in
+    hpux*)	DLEXT=sl
+	 	AC_DEFINE(DLEXT, ".sl");;
+    nextstep*)	DLEXT=o
+	 	AC_DEFINE(DLEXT, ".o");;
+    *)		DLEXT=so
+    		AC_DEFINE(DLEXT, ".so");;
+  esac
+fi
+
+AC_SUBST(STRIP)dnl
+if test "$with_dln_a_out" = yes; then
+  STRIP=true
+else
+  STRIP=strip
+fi
+
+case "$host_os" in
+  linux*)
+	STRIP='strip -S -x';;
+  nextstep*)
+	STRIP='strip -A -n';;
+esac
+
+EXTSTATIC=
+AC_SUBST(EXTSTATIC)dnl
+AC_ARG_WITH(static-linked-ext,
+	    [--with-static-linked-ext  link external modules statically],
+            [case $withval in
+	     yes) STATIC=
+		  EXTSTATIC=static;;
+	     *)	;;
+	     esac])
+
+case "$host_os" in
+  human*)
+    AC_CHECK_LIB(signal, _harderr)
+    AC_CHECK_LIB(hmem, hmemset)
+    AC_CHECK_FUNCS(select)
+    AC_MSG_CHECKING(whether PD libc _dtos18 fail to convert big number)
+    AC_CACHE_VAL(rb_cv_missing__dtos18,
+    [AC_TRY_RUN(
+changequote(<<, >>)dnl
+<<
+#include <stdio.h>
+main ()
+{
+   char buf[256];
+   sprintf (buf, "%g", 1e+300);
+   exit (strcmp (buf, "1e+300") ? 0 : 1);
+}
+>>,
+changequote([, ])dnl
+rb_cv_missing__dtos18=yes, rb_cv_missing__dtos18=no)])
+    AC_MSG_RESULT($rb_cv_missing__dtos18)
+    if test "$rb_cv_missing__dtos18" = yes; then
+      AC_DEFINE(MISSING__DTOS18)
+    fi
+    AC_MSG_CHECKING(whether PD libc fconvert fail to round)
+    AC_CACHE_VAL(rb_cv_missing_fconvert,
+    [AC_TRY_RUN(
+changequote(<<, >>)dnl
+<<
+#include <stdio.h>
+#include <math.h>
+main ()
+{
+  char buf[256];
+  sprintf (buf, "%f", log(exp(1.0)));
+  exit (strcmp (buf, "1.000000") ? 0 : 1);
+}
+>>,
+changequote([, ])dnl
+rb_cv_missing_fconvert=yes, rb_cv_missing_fconvert=no)])
+    AC_MSG_RESULT($rb_cv_missing_fconvert)
+    if test "$rb_cv_missing_fconvert" = yes; then
+      AC_DEFINE(MISSING_FCONVERT)
+    fi
+    LIBOBJS="$LIBOBJS x68.o"
+    CFLAGS="$CFLAGS -fansi-only -cc1-stack=196608 -cpp-stack=2694144"
+    binsuffix=.x
+    setup=Setup.x68
+    ;;
+  *)
+    binsuffix=
+    setup=Setup
+    ;;
+esac
+AC_SUBST(binsuffix)
+AC_SUBST(setup)
+
+if test "$prefix" = NONE; then
+  prefix=$ac_default_prefix
+fi
+
+if test "$fat_binary" = yes ; then
+  CFLAGS="$CFLAGS -pipe $ARCH_FLAG"
+fi
+
+ri_prefix=
+test "$program_prefix" != NONE &&
+  ri_prefix=$program_prefix
+
+ri_suffix=
+test "$program_suffix" != NONE &&
+  ri_suffix=$program_suffix
+
+RUBY_INSTALL_NAME="${ri_prefix}ruby${ri_suffix}"
+AC_DEFINE_UNQUOTED(RUBY_LIB, "${prefix}/lib/${RUBY_INSTALL_NAME}")
+AC_DEFINE_UNQUOTED(RUBY_SITE_LIB, "${prefix}/lib/${RUBY_INSTALL_NAME}/site_ruby")
+AC_SUBST(arch)dnl
+
+if test "$fat_binary" = yes ; then
+    arch="fat-${host_os}"
+
+    AC_DEFINE_UNQUOTED(RUBY_THIN_ARCHLIB,
+                 "${prefix}/lib/${RUBY_INSTALL_NAME}/" __ARCHITECTURE__ "-${host_os}" )
+
+    AC_DEFINE_UNQUOTED(RUBY_SITE_THIN_ARCHLIB,
+                 "${prefix}/lib/${RUBY_INSTALL_NAME}/" __ARCHITECTURE__ "-${host_os}" )
+
+    AC_DEFINE_UNQUOTED(RUBY_ARCHLIB, "${prefix}/lib/${RUBY_INSTALL_NAME}/${arch}")
+    AC_DEFINE_UNQUOTED(RUBY_SITE_ARCHLIB, "${prefix}/lib/${RUBY_INSTALL_NAME}/site_ruby/${arch}")
+    AC_DEFINE_UNQUOTED(RUBY_PLATFORM,  __ARCHITECTURE__ "-${host_os}" )
+else
+    arch="${host_cpu}-${host_os}"
+    AC_DEFINE_UNQUOTED(RUBY_ARCHLIB, "${prefix}/lib/${RUBY_INSTALL_NAME}/${arch}")
+    AC_DEFINE_UNQUOTED(RUBY_SITE_ARCHLIB, "${prefix}/lib/${RUBY_INSTALL_NAME}/site_ruby/${arch}")
+    AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "${arch}")
+fi
+
+echo "creating config.h"
+cat confdefs.h > config.h
+
+AC_OUTPUT(Makefile ext/extmk.rb)
diff --git a/constant.h b/constant.h
deleted file mode 100644
index e0d36909e1..0000000000
--- a/constant.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef CONSTANT_H
-#define CONSTANT_H
-/**********************************************************************
-
-  constant.h -
-
-  $Author$
-  created at: Sun Nov 15 00:09:33 2009
-
-  Copyright (C) 2009 Yusuke Endoh
-
-**********************************************************************/
-#include "ruby/ruby.h"
-#include "id_table.h"
-
-typedef enum {
-    CONST_DEPRECATED = 0x100,
-
-    CONST_VISIBILITY_MASK = 0xff,
-    CONST_PUBLIC    = 0x00,
-    CONST_PRIVATE,
-    CONST_VISIBILITY_MAX
-} rb_const_flag_t;
-
-#define RB_CONST_PRIVATE_P(ce) \
-    (((ce)->flag & CONST_VISIBILITY_MASK) == CONST_PRIVATE)
-#define RB_CONST_PUBLIC_P(ce) \
-    (((ce)->flag & CONST_VISIBILITY_MASK) == CONST_PUBLIC)
-
-#define RB_CONST_DEPRECATED_P(ce) \
-    ((ce)->flag & CONST_DEPRECATED)
-
-typedef struct rb_const_entry_struct {
-    rb_const_flag_t flag;
-    int line;
-    VALUE value;            /* should be mark */
-    VALUE file;             /* should be mark */
-} rb_const_entry_t;
-
-VALUE rb_mod_private_constant(int argc, const VALUE *argv, VALUE obj);
-VALUE rb_mod_public_constant(int argc, const VALUE *argv, VALUE obj);
-VALUE rb_mod_deprecate_constant(int argc, const VALUE *argv, VALUE obj);
-void rb_free_const_table(struct rb_id_table *tbl);
-VALUE rb_const_source_location(VALUE, ID);
-
-MJIT_SYMBOL_EXPORT_BEGIN
-int rb_autoloading_value(VALUE mod, ID id, VALUE *value, rb_const_flag_t *flag);
-rb_const_entry_t *rb_const_lookup(VALUE klass, ID id);
-VALUE rb_public_const_get_at(VALUE klass, ID id);
-VALUE rb_public_const_get_from(VALUE klass, ID id);
-int rb_public_const_defined_from(VALUE klass, ID id);
-VALUE rb_const_source_location_at(VALUE, ID);
-MJIT_SYMBOL_EXPORT_END
-
-#endif /* CONSTANT_H */
diff --git a/cont.c b/cont.c
deleted file mode 100644
index 0304f4c60e..0000000000
--- a/cont.c
+++ /dev/null
@@ -1,2599 +0,0 @@
-/**********************************************************************
-
-  cont.c -
-
-  $Author$
-  created at: Thu May 23 09:03:43 2007
-
-  Copyright (C) 2007 Koichi Sasada
-
-**********************************************************************/
-
-#include "ruby/internal/config.h"
-
-#ifndef _WIN32
-#include <unistd.h>
-#include <sys/mman.h>
-#endif
-
-#include COROUTINE_H
-
-#include "eval_intern.h"
-#include "gc.h"
-#include "internal.h"
-#include "internal/cont.h"
-#include "internal/mjit.h"
-#include "internal/proc.h"
-#include "internal/warnings.h"
-#include "mjit.h"
-#include "vm_core.h"
-#include "id_table.h"
-#include "ractor.h"
-
-static const int DEBUG = 0;
-
-#define RB_PAGE_SIZE (pagesize)
-#define RB_PAGE_MASK (~(RB_PAGE_SIZE - 1))
-static long pagesize;
-
-static const rb_data_type_t cont_data_type, fiber_data_type;
-static VALUE rb_cContinuation;
-static VALUE rb_cFiber;
-static VALUE rb_eFiberError;
-#ifdef RB_EXPERIMENTAL_FIBER_POOL
-static VALUE rb_cFiberPool;
-#endif
-
-#define CAPTURE_JUST_VALID_VM_STACK 1
-
-// Defined in `coroutine/$arch/Context.h`:
-#ifdef COROUTINE_LIMITED_ADDRESS_SPACE
-#define FIBER_POOL_ALLOCATION_FREE
-#define FIBER_POOL_INITIAL_SIZE 8
-#define FIBER_POOL_ALLOCATION_MAXIMUM_SIZE 32
-#else
-#define FIBER_POOL_INITIAL_SIZE 32
-#define FIBER_POOL_ALLOCATION_MAXIMUM_SIZE 1024
-#endif
-
-enum context_type {
-    CONTINUATION_CONTEXT = 0,
-    FIBER_CONTEXT = 1
-};
-
-struct cont_saved_vm_stack {
-    VALUE *ptr;
-#ifdef CAPTURE_JUST_VALID_VM_STACK
-    size_t slen;  /* length of stack (head of ec->vm_stack) */
-    size_t clen;  /* length of control frames (tail of ec->vm_stack) */
-#endif
-};
-
-struct fiber_pool;
-
-// Represents a single stack.
-struct fiber_pool_stack {
-    // A pointer to the memory allocation (lowest address) for the stack.
-    void * base;
-
-    // The current stack pointer, taking into account the direction of the stack.
-    void * current;
-
-    // The size of the stack excluding any guard pages.
-    size_t size;
-
-    // The available stack capacity w.r.t. the current stack offset.
-    size_t available;
-
-    // The pool this stack should be allocated from.
-    struct fiber_pool * pool;
-
-    // If the stack is allocated, the allocation it came from.
-    struct fiber_pool_allocation * allocation;
-};
-
-// A linked list of vacant (unused) stacks.
-// This structure is stored in the first page of a stack if it is not in use.
-// @sa fiber_pool_vacancy_pointer
-struct fiber_pool_vacancy {
-    // Details about the vacant stack:
-    struct fiber_pool_stack stack;
-
-    // The vacancy linked list.
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    struct fiber_pool_vacancy * previous;
-#endif
-    struct fiber_pool_vacancy * next;
-};
-
-// Manages singly linked list of mapped regions of memory which contains 1 more more stack:
-//
-// base = +-------------------------------+-----------------------+  +
-//        |VM Stack       |VM Stack       |                       |  |
-//        |               |               |                       |  |
-//        |               |               |                       |  |
-//        +-------------------------------+                       |  |
-//        |Machine Stack  |Machine Stack  |                       |  |
-//        |               |               |                       |  |
-//        |               |               |                       |  |
-//        |               |               | .  .  .  .            |  |  size
-//        |               |               |                       |  |
-//        |               |               |                       |  |
-//        |               |               |                       |  |
-//        |               |               |                       |  |
-//        |               |               |                       |  |
-//        +-------------------------------+                       |  |
-//        |Guard Page     |Guard Page     |                       |  |
-//        +-------------------------------+-----------------------+  v
-//
-//        +------------------------------------------------------->
-//
-//                                  count
-//
-struct fiber_pool_allocation {
-    // A pointer to the memory mapped region.
-    void * base;
-
-    // The size of the individual stacks.
-    size_t size;
-
-    // The stride of individual stacks (including any guard pages or other accounting details).
-    size_t stride;
-
-    // The number of stacks that were allocated.
-    size_t count;
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    // The number of stacks used in this allocation.
-    size_t used;
-#endif
-
-    struct fiber_pool * pool;
-
-    // The allocation linked list.
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    struct fiber_pool_allocation * previous;
-#endif
-    struct fiber_pool_allocation * next;
-};
-
-// A fiber pool manages vacant stacks to reduce the overhead of creating fibers.
-struct fiber_pool {
-    // A singly-linked list of allocations which contain 1 or more stacks each.
-    struct fiber_pool_allocation * allocations;
-
-    // Provides O(1) stack "allocation":
-    struct fiber_pool_vacancy * vacancies;
-
-    // The size of the stack allocations (excluding any guard page).
-    size_t size;
-
-    // The total number of stacks that have been allocated in this pool.
-    size_t count;
-
-    // The initial number of stacks to allocate.
-    size_t initial_count;
-
-    // Whether to madvise(free) the stack or not:
-    int free_stacks;
-
-    // The number of stacks that have been used in this pool.
-    size_t used;
-
-    // The amount to allocate for the vm_stack:
-    size_t vm_stack_size;
-};
-
-typedef struct rb_context_struct {
-    enum context_type type;
-    int argc;
-    int kw_splat;
-    VALUE self;
-    VALUE value;
-
-    struct cont_saved_vm_stack saved_vm_stack;
-
-    struct {
-        VALUE *stack;
-        VALUE *stack_src;
-        size_t stack_size;
-    } machine;
-    rb_execution_context_t saved_ec;
-    rb_jmpbuf_t jmpbuf;
-    rb_ensure_entry_t *ensure_array;
-    /* Pointer to MJIT info about the continuation.  */
-    struct mjit_cont *mjit_cont;
-} rb_context_t;
-
-
-/*
- * Fiber status:
- *    [Fiber.new] ------> FIBER_CREATED
- *                        | [Fiber#resume]
- *                        v
- *                   +--> FIBER_RESUMED ----+
- *    [Fiber#resume] |    | [Fiber.yield]   |
- *                   |    v                 |
- *                   +-- FIBER_SUSPENDED    | [Terminate]
- *                                          |
- *                       FIBER_TERMINATED <-+
- */
-enum fiber_status {
-    FIBER_CREATED,
-    FIBER_RESUMED,
-    FIBER_SUSPENDED,
-    FIBER_TERMINATED
-};
-
-#define FIBER_CREATED_P(fiber)    ((fiber)->status == FIBER_CREATED)
-#define FIBER_RESUMED_P(fiber)    ((fiber)->status == FIBER_RESUMED)
-#define FIBER_SUSPENDED_P(fiber)  ((fiber)->status == FIBER_SUSPENDED)
-#define FIBER_TERMINATED_P(fiber) ((fiber)->status == FIBER_TERMINATED)
-#define FIBER_RUNNABLE_P(fiber)   (FIBER_CREATED_P(fiber) || FIBER_SUSPENDED_P(fiber))
-
-struct rb_fiber_struct {
-    rb_context_t cont;
-    VALUE first_proc;
-    struct rb_fiber_struct *prev;
-    BITFIELD(enum fiber_status, status, 2);
-    /* If a fiber invokes by "transfer",
-     * then this fiber can't be invoked by "resume" any more after that.
-     * You shouldn't mix "transfer" and "resume".
-     */
-    unsigned int transferred : 1;
-
-    /* Whether the fiber is allowed to implicitly yield. */
-    unsigned int blocking : 1;
-
-    struct coroutine_context context;
-    struct fiber_pool_stack stack;
-};
-
-static struct fiber_pool shared_fiber_pool = {NULL, NULL, 0, 0, 0, 0};
-
-static ID fiber_initialize_keywords[2] = {0};
-
-/*
- * FreeBSD require a first (i.e. addr) argument of mmap(2) is not NULL
- * if MAP_STACK is passed.
- * http://www.FreeBSD.org/cgi/query-pr.cgi?pr=158755
- */
-#if defined(MAP_STACK) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__)
-#define FIBER_STACK_FLAGS (MAP_PRIVATE | MAP_ANON | MAP_STACK)
-#else
-#define FIBER_STACK_FLAGS (MAP_PRIVATE | MAP_ANON)
-#endif
-
-#define ERRNOMSG strerror(errno)
-
-// Locates the stack vacancy details for the given stack.
-// Requires that fiber_pool_vacancy fits within one page.
-inline static struct fiber_pool_vacancy *
-fiber_pool_vacancy_pointer(void * base, size_t size)
-{
-    STACK_GROW_DIR_DETECTION;
-
-    return (struct fiber_pool_vacancy *)(
-        (char*)base + STACK_DIR_UPPER(0, size - RB_PAGE_SIZE)
-    );
-}
-
-// Reset the current stack pointer and available size of the given stack.
-inline static void
-fiber_pool_stack_reset(struct fiber_pool_stack * stack)
-{
-    STACK_GROW_DIR_DETECTION;
-
-    stack->current = (char*)stack->base + STACK_DIR_UPPER(0, stack->size);
-    stack->available = stack->size;
-}
-
-// A pointer to the base of the current unused portion of the stack.
-inline static void *
-fiber_pool_stack_base(struct fiber_pool_stack * stack)
-{
-    STACK_GROW_DIR_DETECTION;
-
-    VM_ASSERT(stack->current);
-
-    return STACK_DIR_UPPER(stack->current, (char*)stack->current - stack->available);
-}
-
-// Allocate some memory from the stack. Used to allocate vm_stack inline with machine stack.
-// @sa fiber_initialize_coroutine
-inline static void *
-fiber_pool_stack_alloca(struct fiber_pool_stack * stack, size_t offset)
-{
-    STACK_GROW_DIR_DETECTION;
-
-    if (DEBUG) fprintf(stderr, "fiber_pool_stack_alloca(%p): %"PRIuSIZE"/%"PRIuSIZE"\n", (void*)stack, offset, stack->available);
-    VM_ASSERT(stack->available >= offset);
-
-    // The pointer to the memory being allocated:
-    void * pointer = STACK_DIR_UPPER(stack->current, (char*)stack->current - offset);
-
-    // Move the stack pointer:
-    stack->current = STACK_DIR_UPPER((char*)stack->current + offset, (char*)stack->current - offset);
-    stack->available -= offset;
-
-    return pointer;
-}
-
-// Reset the current stack pointer and available size of the given stack.
-inline static void
-fiber_pool_vacancy_reset(struct fiber_pool_vacancy * vacancy)
-{
-    fiber_pool_stack_reset(&vacancy->stack);
-
-    // Consume one page of the stack because it's used for the vacancy list:
-    fiber_pool_stack_alloca(&vacancy->stack, RB_PAGE_SIZE);
-}
-
-inline static struct fiber_pool_vacancy *
-fiber_pool_vacancy_push(struct fiber_pool_vacancy * vacancy, struct fiber_pool_vacancy * head)
-{
-    vacancy->next = head;
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    if (head) {
-        head->previous = vacancy;
-        vacancy->previous = NULL;
-    }
-#endif
-
-    return vacancy;
-}
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-static void
-fiber_pool_vacancy_remove(struct fiber_pool_vacancy * vacancy)
-{
-    if (vacancy->next) {
-        vacancy->next->previous = vacancy->previous;
-    }
-
-    if (vacancy->previous) {
-        vacancy->previous->next = vacancy->next;
-    }
-    else {
-        // It's the head of the list:
-        vacancy->stack.pool->vacancies = vacancy->next;
-    }
-}
-
-inline static struct fiber_pool_vacancy *
-fiber_pool_vacancy_pop(struct fiber_pool * pool)
-{
-    struct fiber_pool_vacancy * vacancy = pool->vacancies;
-
-    if (vacancy) {
-        fiber_pool_vacancy_remove(vacancy);
-    }
-
-    return vacancy;
-}
-#else
-inline static struct fiber_pool_vacancy *
-fiber_pool_vacancy_pop(struct fiber_pool * pool)
-{
-    struct fiber_pool_vacancy * vacancy = pool->vacancies;
-
-    if (vacancy) {
-        pool->vacancies = vacancy->next;
-    }
-
-    return vacancy;
-}
-#endif
-
-// Initialize the vacant stack. The [base, size] allocation should not include the guard page.
-// @param base The pointer to the lowest address of the allocated memory.
-// @param size The size of the allocated memory.
-inline static struct fiber_pool_vacancy *
-fiber_pool_vacancy_initialize(struct fiber_pool * fiber_pool, struct fiber_pool_vacancy * vacancies, void * base, size_t size)
-{
-    struct fiber_pool_vacancy * vacancy = fiber_pool_vacancy_pointer(base, size);
-
-    vacancy->stack.base = base;
-    vacancy->stack.size = size;
-
-    fiber_pool_vacancy_reset(vacancy);
-
-    vacancy->stack.pool = fiber_pool;
-
-    return fiber_pool_vacancy_push(vacancy, vacancies);
-}
-
-// Allocate a maximum of count stacks, size given by stride.
-// @param count the number of stacks to allocate / were allocated.
-// @param stride the size of the individual stacks.
-// @return [void *] the allocated memory or NULL if allocation failed.
-inline static void *
-fiber_pool_allocate_memory(size_t * count, size_t stride)
-{
-    // We use a divide-by-2 strategy to try and allocate memory. We are trying
-    // to allocate `count` stacks. In normal situation, this won't fail. But
-    // if we ran out of address space, or we are allocating more memory than
-    // the system would allow (e.g. overcommit * physical memory + swap), we
-    // divide count by two and try again. This condition should only be
-    // encountered in edge cases, but we handle it here gracefully.
-    while (*count > 1) {
-#if defined(_WIN32)
-        void * base = VirtualAlloc(0, (*count)*stride, MEM_COMMIT, PAGE_READWRITE);
-
-        if (!base) {
-            *count = (*count) >> 1;
-        }
-        else {
-            return base;
-        }
-#else
-        errno = 0;
-        void * base = mmap(NULL, (*count)*stride, PROT_READ | PROT_WRITE, FIBER_STACK_FLAGS, -1, 0);
-
-        if (base == MAP_FAILED) {
-            // If the allocation fails, count = count / 2, and try again.
-            *count = (*count) >> 1;
-        }
-        else {
-            return base;
-        }
-#endif
-    }
-
-    return NULL;
-}
-
-// Given an existing fiber pool, expand it by the specified number of stacks.
-// @param count the maximum number of stacks to allocate.
-// @return the allocated fiber pool.
-// @sa fiber_pool_allocation_free
-static struct fiber_pool_allocation *
-fiber_pool_expand(struct fiber_pool * fiber_pool, size_t count)
-{
-    STACK_GROW_DIR_DETECTION;
-
-    size_t size = fiber_pool->size;
-    size_t stride = size + RB_PAGE_SIZE;
-
-    // Allocate the memory required for the stacks:
-    void * base = fiber_pool_allocate_memory(&count, stride);
-
-    if (base == NULL) {
-        rb_raise(rb_eFiberError, "can't alloc machine stack to fiber (%"PRIuSIZE" x %"PRIuSIZE" bytes): %s", count, size, ERRNOMSG);
-    }
-
-    struct fiber_pool_vacancy * vacancies = fiber_pool->vacancies;
-    struct fiber_pool_allocation * allocation = RB_ALLOC(struct fiber_pool_allocation);
-
-    // Initialize fiber pool allocation:
-    allocation->base = base;
-    allocation->size = size;
-    allocation->stride = stride;
-    allocation->count = count;
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    allocation->used = 0;
-#endif
-    allocation->pool = fiber_pool;
-
-    if (DEBUG) {
-        fprintf(stderr, "fiber_pool_expand(%"PRIuSIZE"): %p, %"PRIuSIZE"/%"PRIuSIZE" x [%"PRIuSIZE":%"PRIuSIZE"]\n",
-                count, (void*)fiber_pool, fiber_pool->used, fiber_pool->count, size, fiber_pool->vm_stack_size);
-    }
-
-    // Iterate over all stacks, initializing the vacancy list:
-    for (size_t i = 0; i < count; i += 1) {
-        void * base = (char*)allocation->base + (stride * i);
-        void * page = (char*)base + STACK_DIR_UPPER(size, 0);
-
-#if defined(_WIN32)
-        DWORD old_protect;
-
-        if (!VirtualProtect(page, RB_PAGE_SIZE, PAGE_READWRITE | PAGE_GUARD, &old_protect)) {
-            VirtualFree(allocation->base, 0, MEM_RELEASE);
-            rb_raise(rb_eFiberError, "can't set a guard page: %s", ERRNOMSG);
-        }
-#else
-        if (mprotect(page, RB_PAGE_SIZE, PROT_NONE) < 0) {
-            munmap(allocation->base, count*stride);
-            rb_raise(rb_eFiberError, "can't set a guard page: %s", ERRNOMSG);
-        }
-#endif
-
-        vacancies = fiber_pool_vacancy_initialize(
-            fiber_pool, vacancies,
-            (char*)base + STACK_DIR_UPPER(0, RB_PAGE_SIZE),
-            size
-        );
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-        vacancies->stack.allocation = allocation;
-#endif
-    }
-
-    // Insert the allocation into the head of the pool:
-    allocation->next = fiber_pool->allocations;
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    if (allocation->next) {
-        allocation->next->previous = allocation;
-    }
-
-    allocation->previous = NULL;
-#endif
-
-    fiber_pool->allocations = allocation;
-    fiber_pool->vacancies = vacancies;
-    fiber_pool->count += count;
-
-    return allocation;
-}
-
-// Initialize the specified fiber pool with the given number of stacks.
-// @param vm_stack_size The size of the vm stack to allocate.
-static void
-fiber_pool_initialize(struct fiber_pool * fiber_pool, size_t size, size_t count, size_t vm_stack_size)
-{
-    VM_ASSERT(vm_stack_size < size);
-
-    fiber_pool->allocations = NULL;
-    fiber_pool->vacancies = NULL;
-    fiber_pool->size = ((size / RB_PAGE_SIZE) + 1) * RB_PAGE_SIZE;
-    fiber_pool->count = 0;
-    fiber_pool->initial_count = count;
-    fiber_pool->free_stacks = 1;
-    fiber_pool->used = 0;
-
-    fiber_pool->vm_stack_size = vm_stack_size;
-
-    fiber_pool_expand(fiber_pool, count);
-}
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-// Free the list of fiber pool allocations.
-static void
-fiber_pool_allocation_free(struct fiber_pool_allocation * allocation)
-{
-    STACK_GROW_DIR_DETECTION;
-
-    VM_ASSERT(allocation->used == 0);
-
-    if (DEBUG) fprintf(stderr, "fiber_pool_allocation_free: %p base=%p count=%"PRIuSIZE"\n", allocation, allocation->base, allocation->count);
-
-    size_t i;
-    for (i = 0; i < allocation->count; i += 1) {
-        void * base = (char*)allocation->base + (allocation->stride * i) + STACK_DIR_UPPER(0, RB_PAGE_SIZE);
-
-        struct fiber_pool_vacancy * vacancy = fiber_pool_vacancy_pointer(base, allocation->size);
-
-        // Pop the vacant stack off the free list:
-        fiber_pool_vacancy_remove(vacancy);
-    }
-
-#ifdef _WIN32
-    VirtualFree(allocation->base, 0, MEM_RELEASE);
-#else
-    munmap(allocation->base, allocation->stride * allocation->count);
-#endif
-
-    if (allocation->previous) {
-        allocation->previous->next = allocation->next;
-    }
-    else {
-        // We are the head of the list, so update the pool:
-        allocation->pool->allocations = allocation->next;
-    }
-
-    if (allocation->next) {
-        allocation->next->previous = allocation->previous;
-    }
-
-    allocation->pool->count -= allocation->count;
-
-    ruby_xfree(allocation);
-}
-#endif
-
-// Acquire a stack from the given fiber pool. If none are available, allocate more.
-static struct fiber_pool_stack
-fiber_pool_stack_acquire(struct fiber_pool * fiber_pool) {
-    struct fiber_pool_vacancy * vacancy = fiber_pool_vacancy_pop(fiber_pool);
-
-    if (DEBUG) fprintf(stderr, "fiber_pool_stack_acquire: %p used=%"PRIuSIZE"\n", (void*)fiber_pool->vacancies, fiber_pool->used);
-
-    if (!vacancy) {
-        const size_t maximum = FIBER_POOL_ALLOCATION_MAXIMUM_SIZE;
-        const size_t minimum = fiber_pool->initial_count;
-
-        size_t count = fiber_pool->count;
-        if (count > maximum) count = maximum;
-        if (count < minimum) count = minimum;
-
-        fiber_pool_expand(fiber_pool, count);
-
-        // The free list should now contain some stacks:
-        VM_ASSERT(fiber_pool->vacancies);
-
-        vacancy = fiber_pool_vacancy_pop(fiber_pool);
-    }
-
-    VM_ASSERT(vacancy);
-    VM_ASSERT(vacancy->stack.base);
-
-    // Take the top item from the free list:
-    fiber_pool->used += 1;
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    vacancy->stack.allocation->used += 1;
-#endif
-
-    fiber_pool_stack_reset(&vacancy->stack);
-
-    return vacancy->stack;
-}
-
-// We advise the operating system that the stack memory pages are no longer being used.
-// This introduce some performance overhead but allows system to relaim memory when there is pressure.
-static inline void
-fiber_pool_stack_free(struct fiber_pool_stack * stack)
-{
-    void * base = fiber_pool_stack_base(stack);
-    size_t size = stack->available;
-
-    // If this is not true, the vacancy information will almost certainly be destroyed:
-    VM_ASSERT(size <= (stack->size - RB_PAGE_SIZE));
-
-    if (DEBUG) fprintf(stderr, "fiber_pool_stack_free: %p+%"PRIuSIZE" [base=%p, size=%"PRIuSIZE"]\n", base, size, stack->base, stack->size);
-
-#if VM_CHECK_MODE > 0 && defined(MADV_DONTNEED)
-    // This immediately discards the pages and the memory is reset to zero.
-    madvise(base, size, MADV_DONTNEED);
-#elif defined(MADV_FREE_REUSABLE)
-    madvise(base, size, MADV_FREE_REUSABLE);
-#elif defined(MADV_FREE)
-    madvise(base, size, MADV_FREE);
-#elif defined(MADV_DONTNEED)
-    madvise(base, size, MADV_DONTNEED);
-#elif defined(_WIN32)
-    VirtualAlloc(base, size, MEM_RESET, PAGE_READWRITE);
-    // Not available in all versions of Windows.
-    //DiscardVirtualMemory(base, size);
-#endif
-}
-
-// Release and return a stack to the vacancy list.
-static void
-fiber_pool_stack_release(struct fiber_pool_stack * stack)
-{
-    struct fiber_pool * pool = stack->pool;
-    struct fiber_pool_vacancy * vacancy = fiber_pool_vacancy_pointer(stack->base, stack->size);
-
-    if (DEBUG) fprintf(stderr, "fiber_pool_stack_release: %p used=%"PRIuSIZE"\n", stack->base, stack->pool->used);
-
-    // Copy the stack details into the vacancy area:
-    vacancy->stack = *stack;
-    // After this point, be careful about updating/using state in stack, since it's copied to the vacancy area.
-
-    // Reset the stack pointers and reserve space for the vacancy data:
-    fiber_pool_vacancy_reset(vacancy);
-
-    // Push the vacancy into the vancancies list:
-    pool->vacancies = fiber_pool_vacancy_push(vacancy, stack->pool->vacancies);
-    pool->used -= 1;
-
-#ifdef FIBER_POOL_ALLOCATION_FREE
-    struct fiber_pool_allocation * allocation = stack->allocation;
-
-    allocation->used -= 1;
-
-    // Release address space and/or dirty memory:
-    if (allocation->used == 0) {
-        fiber_pool_allocation_free(allocation);
-    }
-    else if (stack->pool->free_stacks) {
-        fiber_pool_stack_free(&vacancy->stack);
-    }
-#else
-    // This is entirely optional, but clears the dirty flag from the stack memory, so it won't get swapped to disk when there is memory pressure:
-    if (stack->pool->free_stacks) {
-        fiber_pool_stack_free(&vacancy->stack);
-    }
-#endif
-}
-
-static COROUTINE
-fiber_entry(struct coroutine_context * from, struct coroutine_context * to)
-{
-    rb_fiber_start();
-}
-
-// Initialize a fiber's coroutine's machine stack and vm stack.
-static VALUE *
-fiber_initialize_coroutine(rb_fiber_t *fiber, size_t * vm_stack_size)
-{
-    struct fiber_pool * fiber_pool = fiber->stack.pool;
-    rb_execution_context_t *sec = &fiber->cont.saved_ec;
-    void * vm_stack = NULL;
-
-    VM_ASSERT(fiber_pool != NULL);
-
-    fiber->stack = fiber_pool_stack_acquire(fiber_pool);
-    vm_stack = fiber_pool_stack_alloca(&fiber->stack, fiber_pool->vm_stack_size);
-    *vm_stack_size = fiber_pool->vm_stack_size;
-
-#ifdef COROUTINE_PRIVATE_STACK
-    coroutine_initialize(&fiber->context, fiber_entry, fiber_pool_stack_base(&fiber->stack), fiber->stack.available, sec->machine.stack_start);
-    // The stack for this execution context is still the main machine stack, so don't adjust it.
-    // If this is not managed correctly, you will fail in `rb_ec_stack_check`.
-
-    // We limit the machine stack usage to the fiber stack size.
-    if (sec->machine.stack_maxsize > fiber->stack.available) {
-        sec->machine.stack_maxsize = fiber->stack.available;
-    }
-#else
-    coroutine_initialize(&fiber->context, fiber_entry, fiber_pool_stack_base(&fiber->stack), fiber->stack.available);
-
-    // The stack for this execution context is the one we allocated:
-    sec->machine.stack_start = fiber->stack.current;
-    sec->machine.stack_maxsize = fiber->stack.available;
-#endif
-
-    return vm_stack;
-}
-
-// Release the stack from the fiber, it's execution context, and return it to the fiber pool.
-static void
-fiber_stack_release(rb_fiber_t * fiber)
-{
-    rb_execution_context_t *ec = &fiber->cont.saved_ec;
-
-    if (DEBUG) fprintf(stderr, "fiber_stack_release: %p, stack.base=%p\n", (void*)fiber, fiber->stack.base);
-
-    // Return the stack back to the fiber pool if it wasn't already:
-    if (fiber->stack.base) {
-        fiber_pool_stack_release(&fiber->stack);
-        fiber->stack.base = NULL;
-    }
-
-    // The stack is no longer associated with this execution context:
-    rb_ec_clear_vm_stack(ec);
-}
-
-static const char *
-fiber_status_name(enum fiber_status s)
-{
-    switch (s) {
-      case FIBER_CREATED: return "created";
-      case FIBER_RESUMED: return "resumed";
-      case FIBER_SUSPENDED: return "suspended";
-      case FIBER_TERMINATED: return "terminated";
-    }
-    VM_UNREACHABLE(fiber_status_name);
-    return NULL;
-}
-
-static void
-fiber_verify(const rb_fiber_t *fiber)
-{
-#if VM_CHECK_MODE > 0
-    VM_ASSERT(fiber->cont.saved_ec.fiber_ptr == fiber);
-
-    switch (fiber->status) {
-      case FIBER_RESUMED:
-        VM_ASSERT(fiber->cont.saved_ec.vm_stack != NULL);
-        break;
-      case FIBER_SUSPENDED:
-        VM_ASSERT(fiber->cont.saved_ec.vm_stack != NULL);
-        break;
-      case FIBER_CREATED:
-      case FIBER_TERMINATED:
-        /* TODO */
-        break;
-      default:
-        VM_UNREACHABLE(fiber_verify);
-    }
-#endif
-}
-
-inline static void
-fiber_status_set(rb_fiber_t *fiber, enum fiber_status s)
-{
-    // if (DEBUG) fprintf(stderr, "fiber: %p, status: %s -> %s\n", (void *)fiber, fiber_status_name(fiber->status), fiber_status_name(s));
-    VM_ASSERT(!FIBER_TERMINATED_P(fiber));
-    VM_ASSERT(fiber->status != s);
-    fiber_verify(fiber);
-    fiber->status = s;
-}
-
-static inline void
-ec_switch(rb_thread_t *th, rb_fiber_t *fiber)
-{
-    rb_execution_context_t *ec = &fiber->cont.saved_ec;
-    rb_ractor_set_current_ec(th->ractor, th->ec = ec);
-    // ruby_current_execution_context_ptr = th->ec = ec;
-
-    /*
-     * timer-thread may set trap interrupt on previous th->ec at any time;
-     * ensure we do not delay (or lose) the trap interrupt handling.
-     */
-    if (th->vm->ractor.main_thread == th &&
-        rb_signal_buff_size() > 0) {
-        RUBY_VM_SET_TRAP_INTERRUPT(ec);
-    }
-
-    VM_ASSERT(ec->fiber_ptr->cont.self == 0 || ec->vm_stack != NULL);
-}
-
-static rb_context_t *
-cont_ptr(VALUE obj)
-{
-    rb_context_t *cont;
-
-    TypedData_Get_Struct(obj, rb_context_t, &cont_data_type, cont);
-
-    return cont;
-}
-
-static rb_fiber_t *
-fiber_ptr(VALUE obj)
-{
-    rb_fiber_t *fiber;
-
-    TypedData_Get_Struct(obj, rb_fiber_t, &fiber_data_type, fiber);
-    if (!fiber) rb_raise(rb_eFiberError, "uninitialized fiber");
-
-    return fiber;
-}
-
-NOINLINE(static VALUE cont_capture(volatile int *volatile stat));
-
-#define THREAD_MUST_BE_RUNNING(th) do { \
-        if (!(th)->ec->tag) rb_raise(rb_eThreadError, "not running thread"); \
-    } while (0)
-
-rb_thread_t*
-rb_fiber_threadptr(const rb_fiber_t *fiber)
-{
-    return fiber->cont.saved_ec.thread_ptr;
-}
-
-static VALUE
-cont_thread_value(const rb_context_t *cont)
-{
-    return cont->saved_ec.thread_ptr->self;
-}
-
-static void
-cont_compact(void *ptr)
-{
-    rb_context_t *cont = ptr;
-
-    if (cont->self) {
-        cont->self = rb_gc_location(cont->self);
-    }
-    cont->value = rb_gc_location(cont->value);
-    rb_execution_context_update(&cont->saved_ec);
-}
-
-static void
-cont_mark(void *ptr)
-{
-    rb_context_t *cont = ptr;
-
-    RUBY_MARK_ENTER("cont");
-    if (cont->self) {
-        rb_gc_mark_movable(cont->self);
-    }
-    rb_gc_mark_movable(cont->value);
-
-    rb_execution_context_mark(&cont->saved_ec);
-    rb_gc_mark(cont_thread_value(cont));
-
-    if (cont->saved_vm_stack.ptr) {
-#ifdef CAPTURE_JUST_VALID_VM_STACK
-        rb_gc_mark_locations(cont->saved_vm_stack.ptr,
-                             cont->saved_vm_stack.ptr + cont->saved_vm_stack.slen + cont->saved_vm_stack.clen);
-#else
-        rb_gc_mark_locations(cont->saved_vm_stack.ptr,
-                             cont->saved_vm_stack.ptr, cont->saved_ec.stack_size);
-#endif
-    }
-
-    if (cont->machine.stack) {
-        if (cont->type == CONTINUATION_CONTEXT) {
-            /* cont */
-            rb_gc_mark_locations(cont->machine.stack,
-                                 cont->machine.stack + cont->machine.stack_size);
-        }
-        else {
-            /* fiber */
-            const rb_fiber_t *fiber = (rb_fiber_t*)cont;
-
-            if (!FIBER_TERMINATED_P(fiber)) {
-                rb_gc_mark_locations(cont->machine.stack,
-                                     cont->machine.stack + cont->machine.stack_size);
-            }
-        }
-    }
-
-    RUBY_MARK_LEAVE("cont");
-}
-
-static int
-fiber_is_root_p(const rb_fiber_t *fiber)
-{
-    return fiber == fiber->cont.saved_ec.thread_ptr->root_fiber;
-}
-
-static void
-cont_free(void *ptr)
-{
-    rb_context_t *cont = ptr;
-
-    RUBY_FREE_ENTER("cont");
-
-    if (cont->type == CONTINUATION_CONTEXT) {
-        ruby_xfree(cont->saved_ec.vm_stack);
-        ruby_xfree(cont->ensure_array);
-        RUBY_FREE_UNLESS_NULL(cont->machine.stack);
-    }
-    else {
-        rb_fiber_t *fiber = (rb_fiber_t*)cont;
-        coroutine_destroy(&fiber->context);
-        if (!fiber_is_root_p(fiber)) {
-            fiber_stack_release(fiber);
-        }
-    }
-
-    RUBY_FREE_UNLESS_NULL(cont->saved_vm_stack.ptr);
-
-    if (mjit_enabled && cont->mjit_cont != NULL) {
-        mjit_cont_free(cont->mjit_cont);
-    }
-    /* free rb_cont_t or rb_fiber_t */
-    ruby_xfree(ptr);
-    RUBY_FREE_LEAVE("cont");
-}
-
-static size_t
-cont_memsize(const void *ptr)
-{
-    const rb_context_t *cont = ptr;
-    size_t size = 0;
-
-    size = sizeof(*cont);
-    if (cont->saved_vm_stack.ptr) {
-#ifdef CAPTURE_JUST_VALID_VM_STACK
-        size_t n = (cont->saved_vm_stack.slen + cont->saved_vm_stack.clen);
-#else
-        size_t n = cont->saved_ec.vm_stack_size;
-#endif
-        size += n * sizeof(*cont->saved_vm_stack.ptr);
-    }
-
-    if (cont->machine.stack) {
-        size += cont->machine.stack_size * sizeof(*cont->machine.stack);
-    }
-
-    return size;
-}
-
-void
-rb_fiber_update_self(rb_fiber_t *fiber)
-{
-    if (fiber->cont.self) {
-        fiber->cont.self = rb_gc_location(fiber->cont.self);
-    }
-    else {
-        rb_execution_context_update(&fiber->cont.saved_ec);
-    }
-}
-
-void
-rb_fiber_mark_self(const rb_fiber_t *fiber)
-{
-    if (fiber->cont.self) {
-        rb_gc_mark_movable(fiber->cont.self);
-    }
-    else {
-        rb_execution_context_mark(&fiber->cont.saved_ec);
-    }
-}
-
-static void
-fiber_compact(void *ptr)
-{
-    rb_fiber_t *fiber = ptr;
-    fiber->first_proc = rb_gc_location(fiber->first_proc);
-
-    if (fiber->prev) rb_fiber_update_self(fiber->prev);
-
-    cont_compact(&fiber->cont);
-    fiber_verify(fiber);
-}
-
-static void
-fiber_mark(void *ptr)
-{
-    rb_fiber_t *fiber = ptr;
-    RUBY_MARK_ENTER("cont");
-    fiber_verify(fiber);
-    rb_gc_mark_movable(fiber->first_proc);
-    if (fiber->prev) rb_fiber_mark_self(fiber->prev);
-    cont_mark(&fiber->cont);
-    RUBY_MARK_LEAVE("cont");
-}
-
-static void
-fiber_free(void *ptr)
-{
-    rb_fiber_t *fiber = ptr;
-    RUBY_FREE_ENTER("fiber");
-
-    //if (DEBUG) fprintf(stderr, "fiber_free: %p[%p]\n", fiber, fiber->stack.base);
-
-    if (fiber->cont.saved_ec.local_storage) {
-        rb_id_table_free(fiber->cont.saved_ec.local_storage);
-    }
-
-    cont_free(&fiber->cont);
-    RUBY_FREE_LEAVE("fiber");
-}
-
-static size_t
-fiber_memsize(const void *ptr)
-{
-    const rb_fiber_t *fiber = ptr;
-    size_t size = sizeof(*fiber);
-    const rb_execution_context_t *saved_ec = &fiber->cont.saved_ec;
-    const rb_thread_t *th = rb_ec_thread_ptr(saved_ec);
-
-    /*
-     * vm.c::thread_memsize already counts th->ec->local_storage
-     */
-    if (saved_ec->local_storage && fiber != th->root_fiber) {
-        size += rb_id_table_memsize(saved_ec->local_storage);
-    }
-    size += cont_memsize(&fiber->cont);
-    return size;
-}
-
-VALUE
-rb_obj_is_fiber(VALUE obj)
-{
-    if (rb_typeddata_is_kind_of(obj, &fiber_data_type)) {
-        return Qtrue;
-    }
-    else {
-        return Qfalse;
-    }
-}
-
-static void
-cont_save_machine_stack(rb_thread_t *th, rb_context_t *cont)
-{
-    size_t size;
-
-    SET_MACHINE_STACK_END(&th->ec->machine.stack_end);
-
-    if (th->ec->machine.stack_start > th->ec->machine.stack_end) {
-        size = cont->machine.stack_size = th->ec->machine.stack_start - th->ec->machine.stack_end;
-        cont->machine.stack_src = th->ec->machine.stack_end;
-    }
-    else {
-        size = cont->machine.stack_size = th->ec->machine.stack_end - th->ec->machine.stack_start;
-        cont->machine.stack_src = th->ec->machine.stack_start;
-    }
-
-    if (cont->machine.stack) {
-        REALLOC_N(cont->machine.stack, VALUE, size);
-    }
-    else {
-        cont->machine.stack = ALLOC_N(VALUE, size);
-    }
-
-    FLUSH_REGISTER_WINDOWS;
-    MEMCPY(cont->machine.stack, cont->machine.stack_src, VALUE, size);
-}
-
-static const rb_data_type_t cont_data_type = {
-    "continuation",
-    {cont_mark, cont_free, cont_memsize, cont_compact},
-    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
-};
-
-static inline void
-cont_save_thread(rb_context_t *cont, rb_thread_t *th)
-{
-    rb_execution_context_t *sec = &cont->saved_ec;
-
-    VM_ASSERT(th->status == THREAD_RUNNABLE);
-
-    /* save thread context */
-    *sec = *th->ec;
-
-    /* saved_ec->machine.stack_end should be NULL */
-    /* because it may happen GC afterward */
-    sec->machine.stack_end = NULL;
-}
-
-static void
-cont_init_mjit_cont(rb_context_t *cont)
-{
-    VM_ASSERT(cont->mjit_cont == NULL);
-    if (mjit_enabled) {
-        cont->mjit_cont = mjit_cont_new(&(cont->saved_ec));
-    }
-}
-
-static void
-cont_init(rb_context_t *cont, rb_thread_t *th)
-{
-    /* save thread context */
-    cont_save_thread(cont, th);
-    cont->saved_ec.thread_ptr = th;
-    cont->saved_ec.local_storage = NULL;
-    cont->saved_ec.local_storage_recursive_hash = Qnil;
-    cont->saved_ec.local_storage_recursive_hash_for_trace = Qnil;
-    cont_init_mjit_cont(cont);
-}
-
-static rb_context_t *
-cont_new(VALUE klass)
-{
-    rb_context_t *cont;
-    volatile VALUE contval;
-    rb_thread_t *th = GET_THREAD();
-
-    THREAD_MUST_BE_RUNNING(th);
-    contval = TypedData_Make_Struct(klass, rb_context_t, &cont_data_type, cont);
-    cont->self = contval;
-    cont_init(cont, th);
-    return cont;
-}
-
-VALUE rb_fiberptr_self(struct rb_fiber_struct *fiber)
-{
-    return fiber->cont.self;
-}
-
-void
-rb_fiber_init_mjit_cont(struct rb_fiber_struct *fiber)
-{
-    // Currently this function is meant for root_fiber. Others go through cont_new.
-    // XXX: Is this mjit_cont `mjit_cont_free`d?
-    cont_init_mjit_cont(&fiber->cont);
-}
-
-#if 0
-void
-show_vm_stack(const rb_execution_context_t *ec)
-{
-    VALUE *p = ec->vm_stack;
-    while (p < ec->cfp->sp) {
-        fprintf(stderr, "%3d ", (int)(p - ec->vm_stack));
-        rb_obj_info_dump(*p);
-        p++;
-    }
-}
-
-void
-show_vm_pcs(const rb_control_frame_t *cfp,
-            const rb_control_frame_t *end_of_cfp)
-{
-    int i=0;
-    while (cfp != end_of_cfp) {
-        int pc = 0;
-        if (cfp->iseq) {
-            pc = cfp->pc - cfp->iseq->body->iseq_encoded;
-        }
-        fprintf(stderr, "%2d pc: %d\n", i++, pc);
-        cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
-    }
-}
-#endif
-COMPILER_WARNING_PUSH
-#ifdef __clang__
-COMPILER_WARNING_IGNORED(-Wduplicate-decl-specifier)
-#endif
-static VALUE
-cont_capture(volatile int *volatile stat)
-{
-    rb_context_t *volatile cont;
-    rb_thread_t *th = GET_THREAD();
-    volatile VALUE contval;
-    const rb_execution_context_t *ec = th->ec;
-
-    THREAD_MUST_BE_RUNNING(th);
-    rb_vm_stack_to_heap(th->ec);
-    cont = cont_new(rb_cContinuation);
-    contval = cont->self;
-
-#ifdef CAPTURE_JUST_VALID_VM_STACK
-    cont->saved_vm_stack.slen = ec->cfp->sp - ec->vm_stack;
-    cont->saved_vm_stack.clen = ec->vm_stack + ec->vm_stack_size - (VALUE*)ec->cfp;
-    cont->saved_vm_stack.ptr = ALLOC_N(VALUE, cont->saved_vm_stack.slen + cont->saved_vm_stack.clen);
-    MEMCPY(cont->saved_vm_stack.ptr,
-           ec->vm_stack,
-           VALUE, cont->saved_vm_stack.slen);
-    MEMCPY(cont->saved_vm_stack.ptr + cont->saved_vm_stack.slen,
-           (VALUE*)ec->cfp,
-           VALUE,
-           cont->saved_vm_stack.clen);
-#else
-    cont->saved_vm_stack.ptr = ALLOC_N(VALUE, ec->vm_stack_size);
-    MEMCPY(cont->saved_vm_stack.ptr, ec->vm_stack, VALUE, ec->vm_stack_size);
-#endif
-    // At this point, `cfp` is valid but `vm_stack` should be cleared:
-    rb_ec_set_vm_stack(&cont->saved_ec, NULL, 0);
-    VM_ASSERT(cont->saved_ec.cfp != NULL);
-    cont_save_machine_stack(th, cont);
-
-    /* backup ensure_list to array for search in another context */
-    {
-        rb_ensure_list_t *p;
-        int size = 0;
-        rb_ensure_entry_t *entry;
-        for (p=th->ec->ensure_list; p; p=p->next)
-            size++;
-        entry = cont->ensure_array = ALLOC_N(rb_ensure_entry_t,size+1);
-        for (p=th->ec->ensure_list; p; p=p->next) {
-            if (!p->entry.marker)
-                p->entry.marker = rb_ary_tmp_new(0); /* dummy object */
-            *entry++ = p->entry;
-        }
-        entry->marker = 0;
-    }
-
-    if (ruby_setjmp(cont->jmpbuf)) {
-        VALUE value;
-
-        VAR_INITIALIZED(cont);
-        value = cont->value;
-        if (cont->argc == -1) rb_exc_raise(value);
-        cont->value = Qnil;
-        *stat = 1;
-        return value;
-    }
-    else {
-        *stat = 0;
-        return contval;
-    }
-}
-COMPILER_WARNING_POP
-
-static inline void
-fiber_restore_thread(rb_thread_t *th, rb_fiber_t *fiber)
-{
-    ec_switch(th, fiber);
-    VM_ASSERT(th->ec->fiber_ptr == fiber);
-}
-
-static inline void
-cont_restore_thread(rb_context_t *cont)
-{
-    rb_thread_t *th = GET_THREAD();
-
-    /* restore thread context */
-    if (cont->type == CONTINUATION_CONTEXT) {
-        /* continuation */
-        rb_execution_context_t *sec = &cont->saved_ec;
-        rb_fiber_t *fiber = NULL;
-
-        if (sec->fiber_ptr != NULL) {
-            fiber = sec->fiber_ptr;
-        }
-        else if (th->root_fiber) {
-            fiber = th->root_fiber;
-        }
-
-        if (fiber && th->ec != &fiber->cont.saved_ec) {
-            ec_switch(th, fiber);
-        }
-
-        if (th->ec->trace_arg != sec->trace_arg) {
-            rb_raise(rb_eRuntimeError, "can't call across trace_func");
-        }
-
-        /* copy vm stack */
-#ifdef CAPTURE_JUST_VALID_VM_STACK
-        MEMCPY(th->ec->vm_stack,
-               cont->saved_vm_stack.ptr,
-               VALUE, cont->saved_vm_stack.slen);
-        MEMCPY(th->ec->vm_stack + th->ec->vm_stack_size - cont->saved_vm_stack.clen,
-               cont->saved_vm_stack.ptr + cont->saved_vm_stack.slen,
-               VALUE, cont->saved_vm_stack.clen);
-#else
-        MEMCPY(th->ec->vm_stack, cont->saved_vm_stack.ptr, VALUE, sec->vm_stack_size);
-#endif
-        /* other members of ec */
-
-        th->ec->cfp = sec->cfp;
-        th->ec->raised_flag = sec->raised_flag;
-        th->ec->tag = sec->tag;
-        th->ec->protect_tag = sec->protect_tag;
-        th->ec->root_lep = sec->root_lep;
-        th->ec->root_svar = sec->root_svar;
-        th->ec->ensure_list = sec->ensure_list;
-        th->ec->errinfo = sec->errinfo;
-
-        VM_ASSERT(th->ec->vm_stack != NULL);
-    }
-    else {
-        /* fiber */
-        fiber_restore_thread(th, (rb_fiber_t*)cont);
-    }
-}
-
-NOINLINE(static void fiber_setcontext(rb_fiber_t *new_fiber, rb_fiber_t *old_fiber));
-
-static void
-fiber_setcontext(rb_fiber_t *new_fiber, rb_fiber_t *old_fiber)
-{
-    rb_thread_t *th = GET_THREAD();
-
-    /* save old_fiber's machine stack - to ensure efficient garbage collection */
-    if (!FIBER_TERMINATED_P(old_fiber)) {
-        STACK_GROW_DIR_DETECTION;
-        SET_MACHINE_STACK_END(&th->ec->machine.stack_end);
-        if (STACK_DIR_UPPER(0, 1)) {
-            old_fiber->cont.machine.stack_size = th->ec->machine.stack_start - th->ec->machine.stack_end;
-            old_fiber->cont.machine.stack = th->ec->machine.stack_end;
-        }
-        else {
-            old_fiber->cont.machine.stack_size = th->ec->machine.stack_end - th->ec->machine.stack_start;
-            old_fiber->cont.machine.stack = th->ec->machine.stack_start;
-        }
-    }
-
-    /* exchange machine_stack_start between old_fiber and new_fiber */
-    old_fiber->cont.saved_ec.machine.stack_start = th->ec->machine.stack_start;
-
-    /* old_fiber->machine.stack_end should be NULL */
-    old_fiber->cont.saved_ec.machine.stack_end = NULL;
-
-    /* restore thread context */
-    fiber_restore_thread(th, new_fiber);
-
-    // if (DEBUG) fprintf(stderr, "fiber_setcontext: %p[%p] -> %p[%p]\n", old_fiber, old_fiber->stack.base, new_fiber, new_fiber->stack.base);
-
-    /* swap machine context */
-    coroutine_transfer(&old_fiber->context, &new_fiber->context);
-
-    // It's possible to get here, and new_fiber is already freed.
-    // if (DEBUG) fprintf(stderr, "fiber_setcontext: %p[%p] <- %p[%p]\n", old_fiber, old_fiber->stack.base, new_fiber, new_fiber->stack.base);
-}
-
-NOINLINE(NORETURN(static void cont_restore_1(rb_context_t *)));
-
-static void
-cont_restore_1(rb_context_t *cont)
-{
-    cont_restore_thread(cont);
-
-    /* restore machine stack */
-#ifdef _M_AMD64
-    {
-        /* workaround for x64 SEH */
-        jmp_buf buf;
-        setjmp(buf);
-        _JUMP_BUFFER *bp = (void*)&cont->jmpbuf;
-        bp->Frame = ((_JUMP_BUFFER*)((void*)&buf))->Frame;
-    }
-#endif
-    if (cont->machine.stack_src) {
-        FLUSH_REGISTER_WINDOWS;
-        MEMCPY(cont->machine.stack_src, cont->machine.stack,
-               VALUE, cont->machine.stack_size);
-    }
-
-    ruby_longjmp(cont->jmpbuf, 1);
-}
-
-NORETURN(NOINLINE(static void cont_restore_0(rb_context_t *, VALUE *)));
-
-static void
-cont_restore_0(rb_context_t *cont, VALUE *addr_in_prev_frame)
-{
-    if (cont->machine.stack_src) {
-#ifdef HAVE_ALLOCA
-#define STACK_PAD_SIZE 1
-#else
-#define STACK_PAD_SIZE 1024
-#endif
-        VALUE space[STACK_PAD_SIZE];
-
-#if !STACK_GROW_DIRECTION
-        if (addr_in_prev_frame > &space[0]) {
-            /* Stack grows downward */
-#endif
-#if STACK_GROW_DIRECTION <= 0
-            volatile VALUE *const end = cont->machine.stack_src;
-            if (&space[0] > end) {
-# ifdef HAVE_ALLOCA
-                volatile VALUE *sp = ALLOCA_N(VALUE, &space[0] - end);
-                space[0] = *sp;
-# else
-                cont_restore_0(cont, &space[0]);
-# endif
-            }
-#endif
-#if !STACK_GROW_DIRECTION
-        }
-        else {
-            /* Stack grows upward */
-#endif
-#if STACK_GROW_DIRECTION >= 0
-            volatile VALUE *const end = cont->machine.stack_src + cont->machine.stack_size;
-            if (&space[STACK_PAD_SIZE] < end) {
-# ifdef HAVE_ALLOCA
-                volatile VALUE *sp = ALLOCA_N(VALUE, end - &space[STACK_PAD_SIZE]);
-                space[0] = *sp;
-# else
-                cont_restore_0(cont, &space[STACK_PAD_SIZE-1]);
-# endif
-            }
-#endif
-#if !STACK_GROW_DIRECTION
-        }
-#endif
-    }
-    cont_restore_1(cont);
-}
-
-/*
- *  Document-class: Continuation
- *
- *  Continuation objects are generated by Kernel#callcc,
- *  after having +require+d <i>continuation</i>. They hold
- *  a return address and execution context, allowing a nonlocal return
- *  to the end of the #callcc block from anywhere within a
- *  program. Continuations are somewhat analogous to a structured
- *  version of C's <code>setjmp/longjmp</code> (although they contain
- *  more state, so you might consider them closer to threads).
- *
- *  For instance:
- *
- *     require "continuation"
- *     arr = [ "Freddie", "Herbie", "Ron", "Max", "Ringo" ]
- *     callcc{|cc| $cc = cc}
- *     puts(message = arr.shift)
- *     $cc.call unless message =~ /Max/
- *
- *  <em>produces:</em>
- *
- *     Freddie
- *     Herbie
- *     Ron
- *     Max
- *
- *  Also you can call callcc in other methods:
- *
- *     require "continuation"
- *
- *     def g
- *       arr = [ "Freddie", "Herbie", "Ron", "Max", "Ringo" ]
- *       cc = callcc { |cc| cc }
- *       puts arr.shift
- *       return cc, arr.size
- *     end
- *
- *     def f
- *       c, size = g
- *       c.call(c) if size > 1
- *     end
- *
- *     f
- *
- *  This (somewhat contrived) example allows the inner loop to abandon
- *  processing early:
- *
- *     require "continuation"
- *     callcc {|cont|
- *       for i in 0..4
- *         print "#{i}: "
- *         for j in i*5...(i+1)*5
- *           cont.call() if j == 17
- *           printf "%3d", j
- *         end
- *       end
- *     }
- *     puts
- *
- *  <em>produces:</em>
- *
- *     0:   0  1  2  3  4
- *     1:   5  6  7  8  9
- *     2:  10 11 12 13 14
- *     3:  15 16
- */
-
-/*
- *  call-seq:
- *     callcc {|cont| block }   ->  obj
- *
- *  Generates a Continuation object, which it passes to
- *  the associated block. You need to <code>require
- *  'continuation'</code> before using this method. Performing a
- *  <em>cont</em><code>.call</code> will cause the #callcc
- *  to return (as will falling through the end of the block). The
- *  value returned by the #callcc is the value of the
- *  block, or the value passed to <em>cont</em><code>.call</code>. See
- *  class Continuation for more details. Also see
- *  Kernel#throw for an alternative mechanism for
- *  unwinding a call stack.
- */
-
-static VALUE
-rb_callcc(VALUE self)
-{
-    volatile int called;
-    volatile VALUE val = cont_capture(&called);
-
-    if (called) {
-        return val;
-    }
-    else {
-        return rb_yield(val);
-    }
-}
-
-static VALUE
-make_passing_arg(int argc, const VALUE *argv)
-{
-    switch (argc) {
-      case -1:
-        return argv[0];
-      case 0:
-        return Qnil;
-      case 1:
-        return argv[0];
-      default:
-        return rb_ary_new4(argc, argv);
-    }
-}
-
-typedef VALUE e_proc(VALUE);
-
-/* CAUTION!! : Currently, error in rollback_func is not supported  */
-/* same as rb_protect if set rollback_func to NULL */
-void
-ruby_register_rollback_func_for_ensure(e_proc *ensure_func, e_proc *rollback_func)
-{
-    st_table **table_p = &GET_VM()->ensure_rollback_table;
-    if (UNLIKELY(*table_p == NULL)) {
-        *table_p = st_init_numtable();
-    }
-    st_insert(*table_p, (st_data_t)ensure_func, (st_data_t)rollback_func);
-}
-
-static inline e_proc *
-lookup_rollback_func(e_proc *ensure_func)
-{
-    st_table *table = GET_VM()->ensure_rollback_table;
-    st_data_t val;
-    if (table && st_lookup(table, (st_data_t)ensure_func, &val))
-        return (e_proc *) val;
-    return (e_proc *) Qundef;
-}
-
-
-static inline void
-rollback_ensure_stack(VALUE self,rb_ensure_list_t *current,rb_ensure_entry_t *target)
-{
-    rb_ensure_list_t *p;
-    rb_ensure_entry_t *entry;
-    size_t i, j;
-    size_t cur_size;
-    size_t target_size;
-    size_t base_point;
-    e_proc *func;
-
-    cur_size = 0;
-    for (p=current; p; p=p->next)
-        cur_size++;
-    target_size = 0;
-    for (entry=target; entry->marker; entry++)
-        target_size++;
-
-    /* search common stack point */
-    p = current;
-    base_point = cur_size;
-    while (base_point) {
-        if (target_size >= base_point &&
-            p->entry.marker == target[target_size - base_point].marker)
-            break;
-        base_point --;
-        p = p->next;
-    }
-
-    /* rollback function check */
-    for (i=0; i < target_size - base_point; i++) {
-        if (!lookup_rollback_func(target[i].e_proc)) {
-            rb_raise(rb_eRuntimeError, "continuation called from out of critical rb_ensure scope");
-        }
-    }
-    /* pop ensure stack */
-    while (cur_size > base_point) {
-        /* escape from ensure block */
-        (*current->entry.e_proc)(current->entry.data2);
-        current = current->next;
-        cur_size--;
-    }
-    /* push ensure stack */
-    for (j = 0; j < i; j++) {
-        func = lookup_rollback_func(target[i - j - 1].e_proc);
-        if ((VALUE)func != Qundef) {
-            (*func)(target[i - j - 1].data2);
-        }
-    }
-}
-
-NORETURN(static VALUE rb_cont_call(int argc, VALUE *argv, VALUE contval));
-
-/*
- *  call-seq:
- *     cont.call(args, ...)
- *     cont[args, ...]
- *
- *  Invokes the continuation. The program continues from the end of
- *  the #callcc block. If no arguments are given, the original #callcc
- *  returns +nil+. If one argument is given, #callcc returns
- *  it. Otherwise, an array containing <i>args</i> is returned.
- *
- *     callcc {|cont|  cont.call }           #=> nil
- *     callcc {|cont|  cont.call 1 }         #=> 1
- *     callcc {|cont|  cont.call 1, 2, 3 }   #=> [1, 2, 3]
- */
-
-static VALUE
-rb_cont_call(int argc, VALUE *argv, VALUE contval)
-{
-    rb_context_t *cont = cont_ptr(contval);
-    rb_thread_t *th = GET_THREAD();
-
-    if (cont_thread_value(cont) != th->self) {
-        rb_raise(rb_eRuntimeError, "continuation called across threads");
-    }
-    if (cont->saved_ec.protect_tag != th->ec->protect_tag) {
-        rb_raise(rb_eRuntimeError, "continuation called across stack rewinding barrier");
-    }
-    if (cont->saved_ec.fiber_ptr) {
-        if (th->ec->fiber_ptr != cont->saved_ec.fiber_ptr) {
-            rb_raise(rb_eRuntimeError, "continuation called across fiber");
-        }
-    }
-    rollback_ensure_stack(contval, th->ec->ensure_list, cont->ensure_array);
-
-    cont->argc = argc;
-    cont->value = make_passing_arg(argc, argv);
-
-    cont_restore_0(cont, &contval);
-    UNREACHABLE_RETURN(Qnil);
-}
-
-/*********/
-/* fiber */
-/*********/
-
-/*
- *  Document-class: Fiber
- *
- *  Fibers are primitives for implementing light weight cooperative
- *  concurrency in Ruby. Basically they are a means of creating code blocks
- *  that can be paused and resumed, much like threads. The main difference
- *  is that they are never preempted and that the scheduling must be done by
- *  the programmer and not the VM.
- *
- *  As opposed to other stackless light weight concurrency models, each fiber
- *  comes with a stack.  This enables the fiber to be paused from deeply
- *  nested function calls within the fiber block.  See the ruby(1)
- *  manpage to configure the size of the fiber stack(s).
- *
- *  When a fiber is created it will not run automatically. Rather it must
- *  be explicitly asked to run using the Fiber#resume method.
- *  The code running inside the fiber can give up control by calling
- *  Fiber.yield in which case it yields control back to caller (the
- *  caller of the Fiber#resume).
- *
- *  Upon yielding or termination the Fiber returns the value of the last
- *  executed expression
- *
- *  For instance:
- *
- *    fiber = Fiber.new do
- *      Fiber.yield 1
- *      2
- *    end
- *
- *    puts fiber.resume
- *    puts fiber.resume
- *    puts fiber.resume
- *
- *  <em>produces</em>
- *
- *    1
- *    2
- *    FiberError: dead fiber called
- *
- *  The Fiber#resume method accepts an arbitrary number of parameters,
- *  if it is the first call to #resume then they will be passed as
- *  block arguments. Otherwise they will be the return value of the
- *  call to Fiber.yield
- *
- *  Example:
- *
- *    fiber = Fiber.new do |first|
- *      second = Fiber.yield first + 2
- *    end
- *
- *    puts fiber.resume 10
- *    puts fiber.resume 1_000_000
- *    puts fiber.resume "The fiber will be dead before I can cause trouble"
- *
- *  <em>produces</em>
- *
- *    12
- *    1000000
- *    FiberError: dead fiber called
- *
- */
-
-static const rb_data_type_t fiber_data_type = {
-    "fiber",
-    {fiber_mark, fiber_free, fiber_memsize, fiber_compact,},
-    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
-};
-
-static VALUE
-fiber_alloc(VALUE klass)
-{
-    return TypedData_Wrap_Struct(klass, &fiber_data_type, 0);
-}
-
-static rb_fiber_t*
-fiber_t_alloc(VALUE fiber_value, unsigned int blocking)
-{
-    rb_fiber_t *fiber;
-    rb_thread_t *th = GET_THREAD();
-
-    if (DATA_PTR(fiber_value) != 0) {
-        rb_raise(rb_eRuntimeError, "cannot initialize twice");
-    }
-
-    THREAD_MUST_BE_RUNNING(th);
-    fiber = ZALLOC(rb_fiber_t);
-    fiber->cont.self = fiber_value;
-    fiber->cont.type = FIBER_CONTEXT;
-    fiber->blocking = blocking;
-    cont_init(&fiber->cont, th);
-
-    fiber->cont.saved_ec.fiber_ptr = fiber;
-    rb_ec_clear_vm_stack(&fiber->cont.saved_ec);
-
-    fiber->prev = NULL;
-
-    /* fiber->status == 0 == CREATED
-     * So that we don't need to set status: fiber_status_set(fiber, FIBER_CREATED); */
-    VM_ASSERT(FIBER_CREATED_P(fiber));
-
-    DATA_PTR(fiber_value) = fiber;
-
-    return fiber;
-}
-
-static VALUE
-fiber_initialize(VALUE self, VALUE proc, struct fiber_pool * fiber_pool, unsigned int blocking)
-{
-    rb_fiber_t *fiber = fiber_t_alloc(self, blocking);
-
-    fiber->first_proc = proc;
-    fiber->stack.base = NULL;
-    fiber->stack.pool = fiber_pool;
-
-    return self;
-}
-
-static void
-fiber_prepare_stack(rb_fiber_t *fiber)
-{
-    rb_context_t *cont = &fiber->cont;
-    rb_execution_context_t *sec = &cont->saved_ec;
-
-    size_t vm_stack_size = 0;
-    VALUE *vm_stack = fiber_initialize_coroutine(fiber, &vm_stack_size);
-
-    /* initialize cont */
-    cont->saved_vm_stack.ptr = NULL;
-    rb_ec_initialize_vm_stack(sec, vm_stack, vm_stack_size / sizeof(VALUE));
-
-    sec->tag = NULL;
-    sec->local_storage = NULL;
-    sec->local_storage_recursive_hash = Qnil;
-    sec->local_storage_recursive_hash_for_trace = Qnil;
-}
-
-static struct fiber_pool *
-rb_fiber_pool_default(VALUE pool)
-{
-    return &shared_fiber_pool;
-}
-
-/* :nodoc: */
-static VALUE
-rb_fiber_initialize_kw(int argc, VALUE* argv, VALUE self, int kw_splat)
-{
-    VALUE pool = Qnil;
-    VALUE blocking = Qtrue;
-
-    if (kw_splat != RB_NO_KEYWORDS) {
-      VALUE options = Qnil;
-      VALUE arguments[2] = {Qundef};
-
-      argc = rb_scan_args_kw(kw_splat, argc, argv, ":", &options);
-      rb_get_kwargs(options, fiber_initialize_keywords, 0, 2, arguments);
-
-      blocking = arguments[0];
-      pool = arguments[1];
-    }
-
-    return fiber_initialize(self, rb_block_proc(), rb_fiber_pool_default(pool), RTEST(blocking));
-}
-
-/* :nodoc: */
-static VALUE
-rb_fiber_initialize(int argc, VALUE* argv, VALUE self)
-{
-    return rb_fiber_initialize_kw(argc, argv, self, rb_keyword_given_p());
-}
-
-VALUE
-rb_fiber_new(rb_block_call_func_t func, VALUE obj)
-{
-    return fiber_initialize(fiber_alloc(rb_cFiber), rb_proc_new(func, obj), rb_fiber_pool_default(Qnil), 1);
-}
-
-static VALUE
-rb_f_fiber_kw(int argc, VALUE* argv, int kw_splat)
-{
-    rb_thread_t * th = GET_THREAD();
-    VALUE scheduler = th->scheduler;
-    VALUE fiber = Qnil;
-
-    if (scheduler != Qnil) {
-        fiber = rb_funcall_passing_block_kw(scheduler, rb_intern("fiber"), argc, argv, kw_splat);
-    } else {
-        rb_raise(rb_eRuntimeError, "No scheduler is available!");
-    }
-
-    return fiber;
-}
-
-static VALUE
-rb_f_fiber(int argc, VALUE *argv, VALUE obj)
-{
-    return rb_f_fiber_kw(argc, argv, rb_keyword_given_p());
-}
-
-static void rb_fiber_terminate(rb_fiber_t *fiber, int need_interrupt);
-
-void
-rb_fiber_start(void)
-{
-    rb_thread_t * volatile th = GET_THREAD();
-    rb_fiber_t *fiber = th->ec->fiber_ptr;
-    rb_proc_t *proc;
-    enum ruby_tag_type state;
-    int need_interrupt = TRUE;
-
-    VM_ASSERT(th->ec == GET_EC());
-    VM_ASSERT(FIBER_RESUMED_P(fiber));
-
-    if (fiber->blocking) {
-        th->blocking += 1;
-    }
-
-    EC_PUSH_TAG(th->ec);
-    if ((state = EC_EXEC_TAG()) == TAG_NONE) {
-        rb_context_t *cont = &VAR_FROM_MEMORY(fiber)->cont;
-        int argc;
-        const VALUE *argv, args = cont->value;
-        GetProcPtr(fiber->first_proc, proc);
-        argv = (argc = cont->argc) > 1 ? RARRAY_CONST_PTR(args) : &args;
-        cont->value = Qnil;
-        th->ec->errinfo = Qnil;
-        th->ec->root_lep = rb_vm_proc_local_ep(fiber->first_proc);
-        th->ec->root_svar = Qfalse;
-
-        EXEC_EVENT_HOOK(th->ec, RUBY_EVENT_FIBER_SWITCH, th->self, 0, 0, 0, Qnil);
-        cont->value = rb_vm_invoke_proc(th->ec, proc, argc, argv, cont->kw_splat, VM_BLOCK_HANDLER_NONE);
-    }
-    EC_POP_TAG();
-
-    if (state) {
-        VALUE err = th->ec->errinfo;
-        VM_ASSERT(FIBER_RESUMED_P(fiber));
-
-        if (state == TAG_RAISE || state == TAG_FATAL) {
-            rb_threadptr_pending_interrupt_enque(th, err);
-        }
-        else {
-            err = rb_vm_make_jump_tag_but_local_jump(state, err);
-            if (!NIL_P(err)) {
-                rb_threadptr_pending_interrupt_enque(th, err);
-            }
-        }
-        need_interrupt = TRUE;
-    }
-
-    rb_fiber_terminate(fiber, need_interrupt);
-    VM_UNREACHABLE(rb_fiber_start);
-}
-
-static rb_fiber_t *
-root_fiber_alloc(rb_thread_t *th)
-{
-    VALUE fiber_value = fiber_alloc(rb_cFiber);
-    rb_fiber_t *fiber = th->ec->fiber_ptr;
-
-    VM_ASSERT(DATA_PTR(fiber_value) == NULL);
-    VM_ASSERT(fiber->cont.type == FIBER_CONTEXT);
-    VM_ASSERT(fiber->status == FIBER_RESUMED);
-
-    th->root_fiber = fiber;
-    DATA_PTR(fiber_value) = fiber;
-    fiber->cont.self = fiber_value;
-
-#ifdef COROUTINE_PRIVATE_STACK
-    fiber->stack = fiber_pool_stack_acquire(&shared_fiber_pool);
-    coroutine_initialize_main(&fiber->context, fiber_pool_stack_base(&fiber->stack), fiber->stack.available, th->ec->machine.stack_start);
-#else
-    coroutine_initialize_main(&fiber->context);
-#endif
-
-    return fiber;
-}
-
-void
-rb_threadptr_root_fiber_setup(rb_thread_t *th)
-{
-    rb_fiber_t *fiber = ruby_mimmalloc(sizeof(rb_fiber_t));
-    if (!fiber) {
-        rb_bug("%s", strerror(errno)); /* ... is it possible to call rb_bug here? */
-    }
-    MEMZERO(fiber, rb_fiber_t, 1);
-    fiber->cont.type = FIBER_CONTEXT;
-    fiber->cont.saved_ec.fiber_ptr = fiber;
-    fiber->cont.saved_ec.thread_ptr = th;
-    fiber->blocking = 1;
-    fiber_status_set(fiber, FIBER_RESUMED); /* skip CREATED */
-    th->ec = &fiber->cont.saved_ec;
-}
-
-void
-rb_threadptr_root_fiber_release(rb_thread_t *th)
-{
-    if (th->root_fiber) {
-        /* ignore. A root fiber object will free th->ec */
-    }
-    else {
-        rb_execution_context_t *ec = GET_EC();
-
-        VM_ASSERT(th->ec->fiber_ptr->cont.type == FIBER_CONTEXT);
-        VM_ASSERT(th->ec->fiber_ptr->cont.self == 0);
-
-        if (th->ec == ec) {
-            rb_ractor_set_current_ec(th->ractor, NULL);
-        }
-        fiber_free(th->ec->fiber_ptr);
-        th->ec = NULL;
-    }
-}
-
-void
-rb_threadptr_root_fiber_terminate(rb_thread_t *th)
-{
-    rb_fiber_t *fiber = th->ec->fiber_ptr;
-
-    fiber->status = FIBER_TERMINATED;
-
-    // The vm_stack is `alloca`ed on the thread stack, so it's gone too:
-    rb_ec_clear_vm_stack(th->ec);
-}
-
-static inline rb_fiber_t*
-fiber_current(void)
-{
-    rb_execution_context_t *ec = GET_EC();
-    if (ec->fiber_ptr->cont.self == 0) {
-        root_fiber_alloc(rb_ec_thread_ptr(ec));
-    }
-    return ec->fiber_ptr;
-}
-
-static inline rb_fiber_t*
-return_fiber(void)
-{
-    rb_fiber_t *fiber = fiber_current();
-    rb_fiber_t *prev = fiber->prev;
-
-    if (!prev) {
-        rb_thread_t *th = GET_THREAD();
-        rb_fiber_t *root_fiber = th->root_fiber;
-
-        VM_ASSERT(root_fiber != NULL);
-
-        if (root_fiber == fiber) {
-            rb_raise(rb_eFiberError, "can't yield from root fiber");
-        }
-        return root_fiber;
-    }
-    else {
-        fiber->prev = NULL;
-        return prev;
-    }
-}
-
-VALUE
-rb_fiber_current(void)
-{
-    return fiber_current()->cont.self;
-}
-
-// Prepare to execute next_fiber on the given thread.
-static inline VALUE
-fiber_store(rb_fiber_t *next_fiber, rb_thread_t *th)
-{
-    rb_fiber_t *fiber;
-
-    if (th->ec->fiber_ptr != NULL) {
-        fiber = th->ec->fiber_ptr;
-    }
-    else {
-        /* create root fiber */
-        fiber = root_fiber_alloc(th);
-    }
-
-    if (FIBER_CREATED_P(next_fiber)) {
-        fiber_prepare_stack(next_fiber);
-    }
-
-    VM_ASSERT(FIBER_RESUMED_P(fiber) || FIBER_TERMINATED_P(fiber));
-    VM_ASSERT(FIBER_RUNNABLE_P(next_fiber));
-
-    if (FIBER_RESUMED_P(fiber)) fiber_status_set(fiber, FIBER_SUSPENDED);
-
-    fiber_status_set(next_fiber, FIBER_RESUMED);
-    fiber_setcontext(next_fiber, fiber);
-
-    fiber = th->ec->fiber_ptr;
-
-    /* Raise an exception if that was the result of executing the fiber */
-    if (fiber->cont.argc == -1) rb_exc_raise(fiber->cont.value);
-
-    return fiber->cont.value;
-}
-
-static inline VALUE
-fiber_switch(rb_fiber_t *fiber, int argc, const VALUE *argv, int is_resume, int kw_splat)
-{
-    VALUE value;
-    rb_context_t *cont = &fiber->cont;
-    rb_thread_t *th = GET_THREAD();
-
-    /* make sure the root_fiber object is available */
-    if (th->root_fiber == NULL) root_fiber_alloc(th);
-
-    if (th->ec->fiber_ptr == fiber) {
-        /* ignore fiber context switch
-         * because destination fiber is same as current fiber
-         */
-        return make_passing_arg(argc, argv);
-    }
-
-    if (cont_thread_value(cont) != th->self) {
-        rb_raise(rb_eFiberError, "fiber called across threads");
-    }
-    else if (cont->saved_ec.protect_tag != th->ec->protect_tag) {
-        rb_raise(rb_eFiberError, "fiber called across stack rewinding barrier");
-    }
-    else if (FIBER_TERMINATED_P(fiber)) {
-        value = rb_exc_new2(rb_eFiberError, "dead fiber called");
-
-        if (!FIBER_TERMINATED_P(th->ec->fiber_ptr)) {
-            rb_exc_raise(value);
-            VM_UNREACHABLE(fiber_switch);
-        }
-        else {
-            /* th->ec->fiber_ptr is also dead => switch to root fiber */
-            /* (this means we're being called from rb_fiber_terminate, */
-            /* and the terminated fiber's return_fiber() is already dead) */
-            VM_ASSERT(FIBER_SUSPENDED_P(th->root_fiber));
-
-            cont = &th->root_fiber->cont;
-            cont->argc = -1;
-            cont->value = value;
-
-            fiber_setcontext(th->root_fiber, th->ec->fiber_ptr);
-
-            VM_UNREACHABLE(fiber_switch);
-        }
-    }
-
-    VM_ASSERT(FIBER_RUNNABLE_P(fiber));
-
-    if (is_resume) {
-        fiber->prev = fiber_current();
-    }
-
-    if (fiber_current()->blocking) {
-        th->blocking -= 1;
-    }
-
-    cont->argc = argc;
-    cont->kw_splat = kw_splat;
-    cont->value = make_passing_arg(argc, argv);
-
-    value = fiber_store(fiber, th);
-
-    if (is_resume && FIBER_TERMINATED_P(fiber)) {
-        fiber_stack_release(fiber);
-    }
-
-    if (fiber_current()->blocking) {
-        th->blocking += 1;
-    }
-
-    RUBY_VM_CHECK_INTS(th->ec);
-
-    EXEC_EVENT_HOOK(th->ec, RUBY_EVENT_FIBER_SWITCH, th->self, 0, 0, 0, Qnil);
-
-    return value;
-}
-
-VALUE
-rb_fiber_transfer(VALUE fiber_value, int argc, const VALUE *argv)
-{
-    return fiber_switch(fiber_ptr(fiber_value), argc, argv, 0, RB_NO_KEYWORDS);
-}
-
-VALUE
-rb_fiber_blocking_p(VALUE fiber)
-{
-    return (fiber_ptr(fiber)->blocking == 0) ? Qfalse : Qtrue;
-}
-
-void
-rb_fiber_close(rb_fiber_t *fiber)
-{
-    fiber_status_set(fiber, FIBER_TERMINATED);
-}
-
-static void
-rb_fiber_terminate(rb_fiber_t *fiber, int need_interrupt)
-{
-    VALUE value = fiber->cont.value;
-    rb_fiber_t *next_fiber;
-
-    VM_ASSERT(FIBER_RESUMED_P(fiber));
-    rb_fiber_close(fiber);
-
-    coroutine_destroy(&fiber->context);
-
-    fiber->cont.machine.stack = NULL;
-    fiber->cont.machine.stack_size = 0;
-
-    next_fiber = return_fiber();
-    if (need_interrupt) RUBY_VM_SET_INTERRUPT(&next_fiber->cont.saved_ec);
-    fiber_switch(next_fiber, 1, &value, 0, RB_NO_KEYWORDS);
-}
-
-VALUE
-rb_fiber_resume_kw(VALUE fiber_value, int argc, const VALUE *argv, int kw_splat)
-{
-    rb_fiber_t *fiber = fiber_ptr(fiber_value);
-
-    if (argc == -1 && FIBER_CREATED_P(fiber)) {
-        rb_raise(rb_eFiberError, "cannot raise exception on unborn fiber");
-    }
-
-    if (fiber->prev != 0 || fiber_is_root_p(fiber)) {
-        rb_raise(rb_eFiberError, "double resume");
-    }
-
-    if (fiber->transferred != 0) {
-        rb_raise(rb_eFiberError, "cannot resume transferred Fiber");
-    }
-
-    return fiber_switch(fiber, argc, argv, 1, kw_splat);
-}
-
-VALUE
-rb_fiber_resume(VALUE fiber_value, int argc, const VALUE *argv)
-{
-    return rb_fiber_resume_kw(fiber_value, argc, argv, RB_NO_KEYWORDS);
-}
-
-VALUE
-rb_fiber_yield_kw(int argc, const VALUE *argv, int kw_splat)
-{
-    return fiber_switch(return_fiber(), argc, argv, 0, kw_splat);
-}
-
-VALUE
-rb_fiber_yield(int argc, const VALUE *argv)
-{
-    return fiber_switch(return_fiber(), argc, argv, 0, RB_NO_KEYWORDS);
-}
-
-void
-rb_fiber_reset_root_local_storage(rb_thread_t *th)
-{
-    if (th->root_fiber && th->root_fiber != th->ec->fiber_ptr) {
-        th->ec->local_storage = th->root_fiber->cont.saved_ec.local_storage;
-    }
-}
-
-/*
- *  call-seq:
- *     fiber.alive? -> true or false
- *
- *  Returns true if the fiber can still be resumed (or transferred
- *  to). After finishing execution of the fiber block this method will
- *  always return false. You need to <code>require 'fiber'</code>
- *  before using this method.
- */
-VALUE
-rb_fiber_alive_p(VALUE fiber_value)
-{
-    return FIBER_TERMINATED_P(fiber_ptr(fiber_value)) ? Qfalse : Qtrue;
-}
-
-/*
- *  call-seq:
- *     fiber.resume(args, ...) -> obj
- *
- *  Resumes the fiber from the point at which the last Fiber.yield was
- *  called, or starts running it if it is the first call to
- *  #resume. Arguments passed to resume will be the value of the
- *  Fiber.yield expression or will be passed as block parameters to
- *  the fiber's block if this is the first #resume.
- *
- *  Alternatively, when resume is called it evaluates to the arguments passed
- *  to the next Fiber.yield statement inside the fiber's block
- *  or to the block value if it runs to completion without any
- *  Fiber.yield
- */
-static VALUE
-rb_fiber_m_resume(int argc, VALUE *argv, VALUE fiber)
-{
-    return rb_fiber_resume_kw(fiber, argc, argv, rb_keyword_given_p());
-}
-
-/*
- *  call-seq:
- *     fiber.raise                                 -> obj
- *     fiber.raise(string)                         -> obj
- *     fiber.raise(exception [, string [, array]]) -> obj
- *
- *  Raises an exception in the fiber at the point at which the last
- *  +Fiber.yield+ was called. If the fiber has not been started or has
- *  already run to completion, raises +FiberError+.
- *
- *  With no arguments, raises a +RuntimeError+. With a single +String+
- *  argument, raises a +RuntimeError+ with the string as a message.  Otherwise,
- *  the first parameter should be the name of an +Exception+ class (or an
- *  object that returns an +Exception+ object when sent an +exception+
- *  message). The optional second parameter sets the message associated with
- *  the exception, and the third parameter is an array of callback information.
- *  Exceptions are caught by the +rescue+ clause of <code>begin...end</code>
- *  blocks.
- */
-static VALUE
-rb_fiber_raise(int argc, VALUE *argv, VALUE fiber)
-{
-    VALUE exc = rb_make_exception(argc, argv);
-    return rb_fiber_resume_kw(fiber, -1, &exc, RB_NO_KEYWORDS);
-}
-
-static VALUE
-rb_fiber_backtrace(int argc, VALUE *argv, VALUE fiber)
-{
-    return rb_vm_backtrace(argc, argv, &fiber_ptr(fiber)->cont.saved_ec);
-}
-
-static VALUE
-rb_fiber_backtrace_locations(int argc, VALUE *argv, VALUE fiber)
-{
-    return rb_vm_backtrace_locations(argc, argv, &fiber_ptr(fiber)->cont.saved_ec);
-}
-
-/*
- *  call-seq:
- *     fiber.transfer(args, ...) -> obj
- *
- *  Transfer control to another fiber, resuming it from where it last
- *  stopped or starting it if it was not resumed before. The calling
- *  fiber will be suspended much like in a call to
- *  Fiber.yield. You need to <code>require 'fiber'</code>
- *  before using this method.
- *
- *  The fiber which receives the transfer call is treats it much like
- *  a resume call. Arguments passed to transfer are treated like those
- *  passed to resume.
- *
- *  You cannot call +resume+ on a fiber that has been transferred to.
- *  If you call +transfer+ on a fiber, and later call +resume+ on the
- *  the fiber, a +FiberError+ will be raised. Once you call +transfer+ on
- *  a fiber, the only way to resume processing the fiber is to
- *  call +transfer+ on it again.
- *
- *  Example:
- *
- *    fiber1 = Fiber.new do
- *      puts "In Fiber 1"
- *      Fiber.yield
- *      puts "In Fiber 1 again"
- *    end
- *
- *    fiber2 = Fiber.new do
- *      puts "In Fiber 2"
- *      fiber1.transfer
- *      puts "Never see this message"
- *    end
- *
- *    fiber3 = Fiber.new do
- *      puts "In Fiber 3"
- *    end
- *
- *    fiber2.resume
- *    fiber3.resume
- *    fiber1.resume rescue (p $!)
- *    fiber1.transfer
- *
- *  <em>produces</em>
- *
- *    In Fiber 2
- *    In Fiber 1
- *    In Fiber 3
- *    #<FiberError: cannot resume transferred Fiber>
- *    In Fiber 1 again
- *
- */
-static VALUE
-rb_fiber_m_transfer(int argc, VALUE *argv, VALUE fiber_value)
-{
-    rb_fiber_t *fiber = fiber_ptr(fiber_value);
-    fiber->transferred = 1;
-    return fiber_switch(fiber, argc, argv, 0, rb_keyword_given_p());
-}
-
-/*
- *  call-seq:
- *     Fiber.yield(args, ...) -> obj
- *
- *  Yields control back to the context that resumed the fiber, passing
- *  along any arguments that were passed to it. The fiber will resume
- *  processing at this point when #resume is called next.
- *  Any arguments passed to the next #resume will be the value that
- *  this Fiber.yield expression evaluates to.
- */
-static VALUE
-rb_fiber_s_yield(int argc, VALUE *argv, VALUE klass)
-{
-    return rb_fiber_yield_kw(argc, argv, rb_keyword_given_p());
-}
-
-/*
- *  call-seq:
- *     Fiber.current() -> fiber
- *
- *  Returns the current fiber. You need to <code>require 'fiber'</code>
- *  before using this method. If you are not running in the context of
- *  a fiber this method will return the root fiber.
- */
-static VALUE
-rb_fiber_s_current(VALUE klass)
-{
-    return rb_fiber_current();
-}
-
-/*
- * call-seq:
- *   fiber.to_s   -> string
- *
- * Returns fiber information string.
- *
- */
-
-static VALUE
-fiber_to_s(VALUE fiber_value)
-{
-    const rb_fiber_t *fiber = fiber_ptr(fiber_value);
-    const rb_proc_t *proc;
-    char status_info[0x20];
-
-    if (fiber->transferred) {
-        snprintf(status_info, 0x20, " (%s, transferred)", fiber_status_name(fiber->status));
-    }
-    else {
-        snprintf(status_info, 0x20, " (%s)", fiber_status_name(fiber->status));
-    }
-
-    if (!rb_obj_is_proc(fiber->first_proc)) {
-        VALUE str = rb_any_to_s(fiber_value);
-        strlcat(status_info, ">", sizeof(status_info));
-        rb_str_set_len(str, RSTRING_LEN(str)-1);
-        rb_str_cat_cstr(str, status_info);
-        return str;
-    }
-    GetProcPtr(fiber->first_proc, proc);
-    return rb_block_to_s(fiber_value, &proc->block, status_info);
-}
-
-#ifdef HAVE_WORKING_FORK
-void
-rb_fiber_atfork(rb_thread_t *th)
-{
-    if (th->root_fiber) {
-        if (&th->root_fiber->cont.saved_ec != th->ec) {
-            th->root_fiber = th->ec->fiber_ptr;
-        }
-        th->root_fiber->prev = 0;
-    }
-}
-#endif
-
-#ifdef RB_EXPERIMENTAL_FIBER_POOL
-static void
-fiber_pool_free(void *ptr)
-{
-    struct fiber_pool * fiber_pool = ptr;
-    RUBY_FREE_ENTER("fiber_pool");
-
-    fiber_pool_free_allocations(fiber_pool->allocations);
-    ruby_xfree(fiber_pool);
-
-    RUBY_FREE_LEAVE("fiber_pool");
-}
-
-static size_t
-fiber_pool_memsize(const void *ptr)
-{
-    const struct fiber_pool * fiber_pool = ptr;
-    size_t size = sizeof(*fiber_pool);
-
-    size += fiber_pool->count * fiber_pool->size;
-
-    return size;
-}
-
-static const rb_data_type_t FiberPoolDataType = {
-    "fiber_pool",
-    {NULL, fiber_pool_free, fiber_pool_memsize,},
-    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
-};
-
-static VALUE
-fiber_pool_alloc(VALUE klass)
-{
-    struct fiber_pool * fiber_pool = RB_ALLOC(struct fiber_pool);
-
-    return TypedData_Wrap_Struct(klass, &FiberPoolDataType, fiber_pool);
-}
-
-static VALUE
-rb_fiber_pool_initialize(int argc, VALUE* argv, VALUE self)
-{
-    rb_thread_t *th = GET_THREAD();
-    VALUE size = Qnil, count = Qnil, vm_stack_size = Qnil;
-    struct fiber_pool * fiber_pool = NULL;
-
-    // Maybe these should be keyword arguments.
-    rb_scan_args(argc, argv, "03", &size, &count, &vm_stack_size);
-
-    if (NIL_P(size)) {
-        size = INT2NUM(th->vm->default_params.fiber_machine_stack_size);
-    }
-
-    if (NIL_P(count)) {
-        count = INT2NUM(128);
-    }
-
-    if (NIL_P(vm_stack_size)) {
-        vm_stack_size = INT2NUM(th->vm->default_params.fiber_vm_stack_size);
-    }
-
-    TypedData_Get_Struct(self, struct fiber_pool, &FiberPoolDataType, fiber_pool);
-
-    fiber_pool_initialize(fiber_pool, NUM2SIZET(size), NUM2SIZET(count), NUM2SIZET(vm_stack_size));
-
-    return self;
-}
-#endif
-
-/*
- *  Document-class: FiberError
- *
- *  Raised when an invalid operation is attempted on a Fiber, in
- *  particular when attempting to call/resume a dead fiber,
- *  attempting to yield from the root fiber, or calling a fiber across
- *  threads.
- *
- *     fiber = Fiber.new{}
- *     fiber.resume #=> nil
- *     fiber.resume #=> FiberError: dead fiber called
- */
-
-void
-Init_Cont(void)
-{
-    rb_thread_t *th = GET_THREAD();
-    size_t vm_stack_size = th->vm->default_params.fiber_vm_stack_size;
-    size_t machine_stack_size = th->vm->default_params.fiber_machine_stack_size;
-    size_t stack_size = machine_stack_size + vm_stack_size;
-
-#ifdef _WIN32
-    SYSTEM_INFO info;
-    GetSystemInfo(&info);
-    pagesize = info.dwPageSize;
-#else /* not WIN32 */
-    pagesize = sysconf(_SC_PAGESIZE);
-#endif
-    SET_MACHINE_STACK_END(&th->ec->machine.stack_end);
-
-    fiber_pool_initialize(&shared_fiber_pool, stack_size, FIBER_POOL_INITIAL_SIZE, vm_stack_size);
-
-    fiber_initialize_keywords[0] = rb_intern_const("blocking");
-    fiber_initialize_keywords[1] = rb_intern_const("pool");
-
-    char * fiber_shared_fiber_pool_free_stacks = getenv("RUBY_SHARED_FIBER_POOL_FREE_STACKS");
-    if (fiber_shared_fiber_pool_free_stacks) {
-        shared_fiber_pool.free_stacks = atoi(fiber_shared_fiber_pool_free_stacks);
-    }
-
-    rb_cFiber = rb_define_class("Fiber", rb_cObject);
-    rb_define_alloc_func(rb_cFiber, fiber_alloc);
-    rb_eFiberError = rb_define_class("FiberError", rb_eStandardError);
-    rb_define_singleton_method(rb_cFiber, "yield", rb_fiber_s_yield, -1);
-    rb_define_method(rb_cFiber, "initialize", rb_fiber_initialize, -1);
-    rb_define_method(rb_cFiber, "blocking?", rb_fiber_blocking_p, 0);
-    rb_define_method(rb_cFiber, "resume", rb_fiber_m_resume, -1);
-    rb_define_method(rb_cFiber, "raise", rb_fiber_raise, -1);
-    rb_define_method(rb_cFiber, "backtrace", rb_fiber_backtrace, -1);
-    rb_define_method(rb_cFiber, "backtrace_locations", rb_fiber_backtrace_locations, -1);
-    rb_define_method(rb_cFiber, "to_s", fiber_to_s, 0);
-    rb_define_alias(rb_cFiber, "inspect", "to_s");
-
-    rb_define_singleton_method(rb_cFiber, "schedule", rb_f_fiber, -1);
-    //rb_define_global_function("Fiber", rb_f_fiber, -1);
-
-#ifdef RB_EXPERIMENTAL_FIBER_POOL
-    rb_cFiberPool = rb_define_class("Pool", rb_cFiber);
-    rb_define_alloc_func(rb_cFiberPool, fiber_pool_alloc);
-    rb_define_method(rb_cFiberPool, "initialize", rb_fiber_pool_initialize, -1);
-#endif
-}
-
-RUBY_SYMBOL_EXPORT_BEGIN
-
-void
-ruby_Init_Continuation_body(void)
-{
-    rb_cContinuation = rb_define_class("Continuation", rb_cObject);
-    rb_undef_alloc_func(rb_cContinuation);
-    rb_undef_method(CLASS_OF(rb_cContinuation), "new");
-    rb_define_method(rb_cContinuation, "call", rb_cont_call, -1);
-    rb_define_method(rb_cContinuation, "[]", rb_cont_call, -1);
-    rb_define_global_function("callcc", rb_callcc, 0);
-}
-
-void
-ruby_Init_Fiber_as_Coroutine(void)
-{
-    rb_define_method(rb_cFiber, "transfer", rb_fiber_m_transfer, -1);
-    rb_define_method(rb_cFiber, "alive?", rb_fiber_alive_p, 0);
-    rb_define_singleton_method(rb_cFiber, "current", rb_fiber_s_current, 0);
-}
-
-RUBY_SYMBOL_EXPORT_END
diff --git a/coroutine/amd64/Context.S b/coroutine/amd64/Context.S
deleted file mode 100644
index 051db1c5e8..0000000000
--- a/coroutine/amd64/Context.S
+++ /dev/null
@@ -1,46 +0,0 @@
-##
-##  This file is part of the "Coroutine" project and released under the MIT License.
-##
-##  Created by Samuel Williams on 10/5/2018.
-##  Copyright, 2018, by Samuel Williams.
-##
-
-#define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
-
-.text
-
-.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
-
-	# Save caller state
-	pushq %rbp
-	pushq %rbx
-	pushq %r12
-	pushq %r13
-	pushq %r14
-	pushq %r15
-
-	# Save caller stack pointer
-	movq %rsp, (%rdi)
-
-	# Restore callee stack pointer
-	movq (%rsi), %rsp
-
-	# Restore callee state
-	popq %r15
-	popq %r14
-	popq %r13
-	popq %r12
-	popq %rbx
-	popq %rbp
-
-	# Put the first argument into the return value
-	movq %rdi, %rax
-
-	# We pop the return address and jump to it
-	ret
-
-#if defined(__linux__) && defined(__ELF__)
-.section .note.GNU-stack,"",%progbits
-#endif
diff --git a/coroutine/amd64/Context.h b/coroutine/amd64/Context.h
deleted file mode 100644
index 581525b67e..0000000000
--- a/coroutine/amd64/Context.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 10/5/2018.
- *  Copyright, 2018, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define COROUTINE __attribute__((noreturn)) void
-
-enum {COROUTINE_REGISTERS = 6};
-
-struct coroutine_context
-{
-    void **stack_pointer;
-};
-
-typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->stack_pointer = NULL;
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    // Stack grows down. Force 16-byte alignment.
-    char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
-
-    *--context->stack_pointer = NULL;
-    *--context->stack_pointer = (void*)start;
-
-    context->stack_pointer -= COROUTINE_REGISTERS;
-    memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
-}
-
-struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-    context->stack_pointer = NULL;
-}
diff --git a/coroutine/arm32/Context.S b/coroutine/arm32/Context.S
deleted file mode 100644
index c5338f0b67..0000000000
--- a/coroutine/arm32/Context.S
+++ /dev/null
@@ -1,29 +0,0 @@
-##
-##  This file is part of the "Coroutine" project and released under the MIT License.
-##
-##  Created by Samuel Williams on 10/5/2018.
-##  Copyright, 2018, by Samuel Williams.
-##
-
-#define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
-
-.file "Context.S"
-.text
-.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
-.align 2
-.type PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer),%function
-.syntax unified
-
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
-	# Save caller state (8 registers + return address)
-	push {r4-r11,lr}
-
-	# Save caller stack pointer
-	str sp, [r0]
-
-	# Restore callee stack pointer
-	ldr sp, [r1]
-
-	# Restore callee state (8 registers program counter)
-	pop {r4-r11,pc}
diff --git a/coroutine/arm32/Context.h b/coroutine/arm32/Context.h
deleted file mode 100644
index e69f4b2eeb..0000000000
--- a/coroutine/arm32/Context.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 10/5/2018.
- *  Copyright, 2018, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define COROUTINE __attribute__((noreturn)) void
-#define COROUTINE_LIMITED_ADDRESS_SPACE
-
-enum {COROUTINE_REGISTERS = 8};
-
-struct coroutine_context
-{
-    void **stack_pointer;
-};
-
-typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->stack_pointer = NULL;
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    // Stack grows down. Force 16-byte alignment.
-    char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
-
-    *--context->stack_pointer = (void*)start;
-
-    context->stack_pointer -= COROUTINE_REGISTERS;
-    memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
-}
-
-struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-}
diff --git a/coroutine/arm64/Context.S b/coroutine/arm64/Context.S
deleted file mode 100644
index 04e3f6d1ef..0000000000
--- a/coroutine/arm64/Context.S
+++ /dev/null
@@ -1,62 +0,0 @@
-##
-##  This file is part of the "Coroutine" project and released under the MIT License.
-##
-##  Created by Samuel Williams on 10/5/2018.
-##  Copyright, 2018, by Samuel Williams.
-##
-
-#define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
-
-.text
-.align 2
-
-.global PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
-
-	# Make space on the stack for caller registers
-	sub sp, sp, 0xb0
-
-	# Save caller registers
-	stp d8, d9, [sp, 0x00]
-	stp d10, d11, [sp, 0x10]
-	stp d12, d13, [sp, 0x20]
-	stp d14, d15, [sp, 0x30]
-	stp x19, x20, [sp, 0x40]
-	stp x21, x22, [sp, 0x50]
-	stp x23, x24, [sp, 0x60]
-	stp x25, x26, [sp, 0x70]
-	stp x27, x28, [sp, 0x80]
-	stp x29, x30, [sp, 0x90]
-
-	# Save return address
-	str x30, [sp, 0xa0]
-
-	# Save stack pointer to x0 (first argument)
-	mov x2, sp
-	str x2, [x0, 0]
-
-	# Load stack pointer from x1 (second argument)
-	ldr x3, [x1, 0]
-	mov sp, x3
-
-	# Restore caller registers
-	ldp d8, d9, [sp, 0x00]
-	ldp d10, d11, [sp, 0x10]
-	ldp d12, d13, [sp, 0x20]
-	ldp d14, d15, [sp, 0x30]
-	ldp x19, x20, [sp, 0x40]
-	ldp x21, x22, [sp, 0x50]
-	ldp x23, x24, [sp, 0x60]
-	ldp x25, x26, [sp, 0x70]
-	ldp x27, x28, [sp, 0x80]
-	ldp x29, x30, [sp, 0x90]
-
-	# Load return address into x4
-	ldr x4, [sp, 0xa0]
-
-	# Pop stack frame
-	add sp, sp, 0xb0
-
-	# Jump to return address (in x4)
-	ret x4
diff --git a/coroutine/arm64/Context.h b/coroutine/arm64/Context.h
deleted file mode 100644
index 34be995a4f..0000000000
--- a/coroutine/arm64/Context.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 10/5/2018.
- *  Copyright, 2018, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define COROUTINE __attribute__((noreturn)) void
-
-enum {COROUTINE_REGISTERS = 0xb0 / 8};
-
-struct coroutine_context
-{
-    void **stack_pointer;
-};
-
-typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->stack_pointer = NULL;
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    // Stack grows down. Force 16-byte alignment.
-    char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
-
-    context->stack_pointer -= COROUTINE_REGISTERS;
-    memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
-
-    context->stack_pointer[0xa0 / 8] = (void*)start;
-}
-
-struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-}
diff --git a/coroutine/copy/Context.c b/coroutine/copy/Context.c
deleted file mode 100644
index c1b4144e98..0000000000
--- a/coroutine/copy/Context.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 24/6/2019.
- *  Copyright, 2019, by Samuel Williams.
-*/
-
-#include "Context.h"
-
-// http://gcc.gnu.org/onlinedocs/gcc/Alternate-Keywords.html
-#ifndef __GNUC__
-#define __asm__ asm
-#endif
-
-#if defined(__sparc)
-__attribute__((noinline))
-// https://marc.info/?l=linux-sparc&m=131914569320660&w=2
-static void coroutine_flush_register_windows() {
-    __asm__
-#ifdef __GNUC__
-    __volatile__
-#endif
-#if defined(__sparcv9) || defined(__sparc_v9__) || defined(__arch64__)
-#ifdef __GNUC__
-    ("flushw" : : : "%o7")
-#else
-    ("flushw")
-#endif
-#else
-    ("ta 0x03")
-#endif
-    ;
-}
-#else
-static void coroutine_flush_register_windows() {}
-#endif
-
-int coroutine_save_stack(struct coroutine_context * context) {
-    void *stack_pointer = &stack_pointer;
-
-    assert(context->stack);
-    assert(context->base);
-
-    // At this point, you may need to ensure on architectures that use register windows, that all registers are flushed to the stack.
-    coroutine_flush_register_windows();
-
-    // Save stack to private area:
-    if (stack_pointer < context->base) {
-        size_t size = (char*)context->base - (char*)stack_pointer;
-        assert(size <= context->size);
-
-        memcpy(context->stack, stack_pointer, size);
-        context->used = size;
-    } else {
-        size_t size = (char*)stack_pointer - (char*)context->base;
-        assert(size <= context->size);
-
-        memcpy(context->stack, context->base, size);
-        context->used = size;
-    }
-
-    // Save registers / restore point:
-    return _setjmp(context->state);
-}
-
-__attribute__((noreturn, noinline))
-static void coroutine_restore_stack_padded(struct coroutine_context *context, void * buffer) {
-    void *stack_pointer = &stack_pointer;
-
-    assert(context->base);
-
-    // Restore stack from private area:
-    if (stack_pointer < context->base) {
-        void * bottom = (char*)context->base - context->used;
-        assert(bottom > stack_pointer);
-
-        memcpy(bottom, context->stack, context->used);
-    } else {
-        void * top = (char*)context->base + context->used;
-        assert(top < stack_pointer);
-
-        memcpy(context->base, context->stack, context->used);
-    }
-
-    // Restore registers:
-    // The `| (int)buffer` is to force the compiler NOT to elide he buffer and `alloca`.
-    _longjmp(context->state, 1 | (int)buffer);
-}
-
-static const size_t GAP = 128;
-
-// In order to swap between coroutines, we need to swap the stack and registers.
-// `setjmp` and `longjmp` are able to swap registers, but what about swapping stacks? You can use `memcpy` to copy the current stack to a private area and `memcpy` to copy the private stack of the next coroutine to the main stack.
-// But if the stack yop are copying in to the main stack is bigger than the currently executing stack, the `memcpy` will clobber the current stack frame (including the context argument). So we use `alloca` to push the current stack frame *beyond* the stack we are about to copy in. This ensures the current stack frame in `coroutine_restore_stack_padded` remains valid for calling `longjmp`.
-__attribute__((noreturn))
-void coroutine_restore_stack(struct coroutine_context *context) {
-    void *stack_pointer = &stack_pointer;
-    void *buffer = NULL;
-    ssize_t offset = 0;
-
-    // We must ensure that the next stack frame is BEYOND the stack we are restoring:
-    if (stack_pointer < context->base) {
-        offset = (char*)stack_pointer - ((char*)context->base - context->used) + GAP;
-        if (offset > 0) buffer = alloca(offset);
-    } else {
-        offset = ((char*)context->base + context->used) - (char*)stack_pointer + GAP;
-        if (offset > 0) buffer = alloca(offset);
-    }
-
-    assert(context->used > 0);
-
-    coroutine_restore_stack_padded(context, buffer);
-}
-
-struct coroutine_context *coroutine_transfer(struct coroutine_context *current, struct coroutine_context *target)
-{
-    struct coroutine_context *previous = target->from;
-
-    // In theory, either this condition holds true, or we should assign the base address to target:
-    assert(current->base == target->base);
-    // If you are trying to copy the coroutine to a different thread
-    // target->base = current->base
-
-    target->from = current;
-
-    assert(current != target);
-
-    // It's possible to come here, even thought the current fiber has been terminated. We are never going to return so we don't bother saving the stack.
-
-    if (current->stack) {
-      if (coroutine_save_stack(current) == 0) {
-          coroutine_restore_stack(target);
-      }
-    } else {
-        coroutine_restore_stack(target);
-    }
-
-    target->from = previous;
-
-    return target;
-}
diff --git a/coroutine/copy/Context.h b/coroutine/copy/Context.h
deleted file mode 100644
index 6038f00cf6..0000000000
--- a/coroutine/copy/Context.h
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 27/6/2019.
- *  Copyright, 2019, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <setjmp.h>
-#include <string.h>
-#include <stdlib.h>
-
-/* OpenBSD supports alloca, but does not include alloca.h */
-#ifndef __OpenBSD__
-#include <alloca.h>
-#endif
-
-#define COROUTINE __attribute__((noreturn)) void
-
-#if INTPTR_MAX <= INT32_MAX
-#define COROUTINE_LIMITED_ADDRESS_SPACE
-#endif
-
-// This stack copying implementation which uses a private stack for each coroutine, including the main one.
-#define COROUTINE_PRIVATE_STACK
-
-struct coroutine_context
-{
-    // Private stack:
-    void *stack;
-    size_t size, used;
-
-    // The top (or bottom) of the currently executing stack:
-    void *base;
-
-    jmp_buf state;
-
-    struct coroutine_context *from;
-};
-
-typedef COROUTINE(*coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-int coroutine_save_stack(struct coroutine_context * context);
-COROUTINE coroutine_restore_stack(struct coroutine_context *context);
-
-// @param stack The private stack area memory allocation (pointer to lowest address).
-// @param size The size of the private stack area.
-// @param base A stack pointer to the base of the main stack. On x86 hardware, this is the upper extent of the region that will be copied to the private stack.
-static inline void coroutine_initialize_main(struct coroutine_context *context, void *stack, size_t size, void *base) {
-    assert(stack);
-    assert(size >= 1024);
-
-    context->stack = stack;
-    context->size = size;
-    context->used = 0;
-
-    assert(base);
-    context->base = base;
-
-    context->from = NULL;
-}
-
-// @param start The start function to invoke.
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size,
-    void *base
-) {
-    assert(start);
-
-    coroutine_initialize_main(context, stack, size, base);
-
-    if (coroutine_save_stack(context)) {
-        start(context->from, context);
-    }
-}
-
-struct coroutine_context *coroutine_transfer(struct coroutine_context *current, register struct coroutine_context *target);
-
-static inline void coroutine_destroy(struct coroutine_context *context)
-{
-    context->stack = NULL;
-    context->size = 0;
-    context->from = NULL;
-}
diff --git a/coroutine/ppc64le/Context.S b/coroutine/ppc64le/Context.S
deleted file mode 100644
index 61be9efcf0..0000000000
--- a/coroutine/ppc64le/Context.S
+++ /dev/null
@@ -1,75 +0,0 @@
-#define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
-
-.text
-.align 2
-
-.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
-.type   PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer), @function
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
-	# Make space on the stack for caller registers
-	addi 1,1,-152
-
-	# Save caller registers
-	std 14,0(1)
-	std 15,8(1)
-	std 16,16(1)
-	std 17,24(1)
-	std 18,32(1)
-	std 19,40(1)
-	std 20,48(1)
-	std 21,56(1)
-	std 22,64(1)
-	std 23,72(1)
-	std 24,80(1)
-	std 25,88(1)
-	std 26,96(1)
-	std 27,104(1)
-	std 28,112(1)
-	std 29,120(1)
-	std 30,128(1)
-	std 31,136(1)
-
-	# Save return address
-	mflr 0
-	std 0,144(1)
-
-	# Save stack pointer to first argument
-	std 1,0(3)
-
-	# Load stack pointer from second argument
-	ld 1,0(4)
-
-	# Restore caller registers
-	ld 14,0(1)
-	ld 15,8(1)
-	ld 16,16(1)
-	ld 17,24(1)
-	ld 18,32(1)
-	ld 19,40(1)
-	ld 20,48(1)
-	ld 21,56(1)
-	ld 22,64(1)
-	ld 23,72(1)
-	ld 24,80(1)
-	ld 25,88(1)
-	ld 26,96(1)
-	ld 27,104(1)
-	ld 28,112(1)
-	ld 29,120(1)
-	ld 30,128(1)
-	ld 31,136(1)
-
-	# Load return address
-	ld 0,144(1)
-	mtlr 0
-
-	# Pop stack frame
-	addi 1,1,152
-
-	# Jump to return address
-	blr
-
-#if defined(__linux__) && defined(__ELF__)
-.section .note.GNU-stack,"",%progbits
-#endif
diff --git a/coroutine/ppc64le/Context.h b/coroutine/ppc64le/Context.h
deleted file mode 100644
index e36f9c3583..0000000000
--- a/coroutine/ppc64le/Context.h
+++ /dev/null
@@ -1,51 +0,0 @@
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define COROUTINE __attribute__((noreturn)) void
-
-enum {
-  COROUTINE_REGISTERS =
-  19  /* 18 general purpose registers (r14-r31) and 1 return address */
-  + 4  /* space for fiber_entry() to store the link register */
-};
-
-struct coroutine_context
-{
-    void **stack_pointer;
-};
-
-typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->stack_pointer = NULL;
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    // Stack grows down. Force 16-byte alignment.
-    char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
-
-    context->stack_pointer -= COROUTINE_REGISTERS;
-    memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
-
-    /* Skip a global prologue that sets the TOC register */
-    context->stack_pointer[18] = ((char*)start) + 8;
-}
-
-struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-    context->stack_pointer = NULL;
-}
diff --git a/coroutine/ucontext/Context.c b/coroutine/ucontext/Context.c
deleted file mode 100644
index 9ba76ee628..0000000000
--- a/coroutine/ucontext/Context.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 24/6/2019.
- *  Copyright, 2019, by Samuel Williams.
-*/
-
-/* According to Solaris' ucontext.h, makecontext, etc. are removed in SUSv4.
- * To enable the prototype declarations, we need to define __EXTENSIONS__.
- */
-#if defined(__sun) && !defined(__EXTENSIONS__)
-#define __EXTENSIONS__
-#endif
-#include "Context.h"
-
-void coroutine_trampoline(void * _start, void * _context)
-{
-    coroutine_start start = (coroutine_start)_start;
-    struct coroutine_context * context = _context;
-
-    start(context->from, context);
-}
diff --git a/coroutine/ucontext/Context.h b/coroutine/ucontext/Context.h
deleted file mode 100644
index 2b2a593793..0000000000
--- a/coroutine/ucontext/Context.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 24/6/2019.
- *  Copyright, 2019, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <ucontext.h>
-
-#define COROUTINE __attribute__((noreturn)) void
-
-#if INTPTR_MAX <= INT32_MAX
-#define COROUTINE_LIMITED_ADDRESS_SPACE
-#endif
-
-struct coroutine_context
-{
-    ucontext_t state;
-    struct coroutine_context * from;
-};
-
-typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-COROUTINE coroutine_trampoline(void * _start, void * _context);
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->from = NULL;
-    getcontext(&context->state);
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    coroutine_initialize_main(context);
-
-    context->state.uc_stack.ss_size = size;
-    // Despite what it's called, this is not actually a stack pointer. It points to the address of the stack allocation (the lowest address).
-    context->state.uc_stack.ss_sp = (char*)stack;
-    context->state.uc_stack.ss_flags = 0;
-    context->state.uc_link = NULL;
-
-    makecontext(&context->state, (void(*)(void))coroutine_trampoline, 2, (void*)start, (void*)context);
-}
-
-static inline struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target)
-{
-    struct coroutine_context * previous = target->from;
-
-    target->from = current;
-    swapcontext(&current->state, &target->state);
-    target->from = previous;
-
-    return target;
-}
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-    context->state.uc_stack.ss_sp = NULL;
-    context->state.uc_stack.ss_size = 0;
-    context->from = NULL;
-}
diff --git a/coroutine/win32/Context.S b/coroutine/win32/Context.S
deleted file mode 100644
index d14bf435e8..0000000000
--- a/coroutine/win32/Context.S
+++ /dev/null
@@ -1,47 +0,0 @@
-##
-##  This file is part of the "Coroutine" project and released under the MIT License.
-##
-##  Created by Lars Kanis on 06/06/2019.
-##
-
-.text
-
-# Using fastcall is a big win (and it's the same as how x64 works).
-# In coroutine transfer, the arguments are passed in ecx and edx. We don't need
-# to touch these in order to pass them to the destination coroutine.
-
-.globl @coroutine_transfer@8
-@coroutine_transfer@8:
-	# Save the thread information block:
-	pushl %fs:0
-	pushl %fs:4
-	pushl %fs:8
-
-	# Save caller registers:
-	pushl %ebp
-	pushl %ebx
-	pushl %edi
-	pushl %esi
-
-	# Save caller stack pointer:
-	movl %esp, (%ecx)
-
-	# Restore callee stack pointer:
-	movl (%edx), %esp
-
-	# Restore callee stack:
-	popl %esi
-	popl %edi
-	popl %ebx
-	popl %ebp
-
-	# Restore the thread information block:
-	popl %fs:8
-	popl %fs:4
-	popl %fs:0
-
-	# Save the first argument as the return value:
-	movl %ecx, %eax
-
-	# Jump to the address on the stack:
-	ret
diff --git a/coroutine/win32/Context.asm b/coroutine/win32/Context.asm
deleted file mode 100644
index f8f431239b..0000000000
--- a/coroutine/win32/Context.asm
+++ /dev/null
@@ -1,55 +0,0 @@
-;;
-;;  This file is part of the "Coroutine" project and released under the MIT License.
-;;
-;;  Created by Samuel Williams on 10/5/2018.
-;;  Copyright, 2018, by Samuel Williams.
-;;
-
-.386
-.model flat
-
-.code
-
-assume fs:nothing
-
-; Using fastcall is a big win (and it's the same has how x64 works).
-; In coroutine transfer, the arguments are passed in ecx and edx. We don't need
-; to touch these in order to pass them to the destination coroutine.
-
-@coroutine_transfer@8 proc
-	; Save the thread information block:
-	push fs:[0]
-	push fs:[4]
-	push fs:[8]
-
-	; Save caller registers:
-	push ebp
-	push ebx
-	push edi
-	push esi
-
-	; Save caller stack pointer:
-	mov dword ptr [ecx], esp
-
-	; Restore callee stack pointer:
-	mov esp, dword ptr [edx]
-
-	; Restore callee stack:
-	pop esi
-	pop edi
-	pop ebx
-	pop ebp
-
-	; Restore the thread information block:
-	pop fs:[8]
-	pop fs:[4]
-	pop fs:[0]
-
-	; Save the first argument as the return value:
-	mov eax, dword ptr ecx
-
-	; Jump to the address on the stack:
-	ret
-@coroutine_transfer@8 endp
-
-end
diff --git a/coroutine/win32/Context.h b/coroutine/win32/Context.h
deleted file mode 100644
index e20342a98d..0000000000
--- a/coroutine/win32/Context.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 10/5/2018.
- *  Copyright, 2018, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define COROUTINE __declspec(noreturn) void __fastcall
-#define COROUTINE_LIMITED_ADDRESS_SPACE
-
-/* This doesn't include thread information block */
-enum {COROUTINE_REGISTERS = 4};
-
-struct coroutine_context
-{
-    void **stack_pointer;
-};
-
-typedef void(__fastcall * coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->stack_pointer = NULL;
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    // Stack grows down. Force 16-byte alignment.
-    char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
-
-    *--context->stack_pointer = (void*)start;
-
-    /* Windows Thread Information Block */
-    *--context->stack_pointer = (void*)0xFFFFFFFF; /* fs:[0] */
-    *--context->stack_pointer = (void*)top; /* fs:[4] */
-    *--context->stack_pointer = (void*)stack;  /* fs:[8] */
-
-    context->stack_pointer -= COROUTINE_REGISTERS;
-    memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
-}
-
-struct coroutine_context * __fastcall coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-}
diff --git a/coroutine/win64/Context.S b/coroutine/win64/Context.S
deleted file mode 100644
index e0ee38e006..0000000000
--- a/coroutine/win64/Context.S
+++ /dev/null
@@ -1,77 +0,0 @@
-##
-##  This file is part of the "Coroutine" project and released under the MIT License.
-##
-##  Created by Samuel Williams on 4/11/2018.
-##  Copyright, 2018, by Samuel Williams.
-##
-
-.text
-
-.globl coroutine_transfer
-coroutine_transfer:
-	# Save the thread information block:
-	pushq %gs:8
-	pushq %gs:16
-
-	# Save caller registers:
-	pushq %rbp
-	pushq %rbx
-	pushq %rdi
-	pushq %rsi
-	pushq %r12
-	pushq %r13
-	pushq %r14
-	pushq %r15
-
-	movaps %xmm15, -168(%rsp)
-	movaps %xmm14, -152(%rsp)
-	movaps %xmm13, -136(%rsp)
-	movaps %xmm12, -120(%rsp)
-	movaps %xmm11, -104(%rsp)
-	movaps %xmm10, -88(%rsp)
-	movaps %xmm9, -72(%rsp)
-	movaps %xmm8, -56(%rsp)
-	movaps %xmm7, -40(%rsp)
-	movaps %xmm6, -24(%rsp)
-
-	# Save caller stack pointer:
-	mov %rsp, (%rcx)
-
-	# Restore callee stack pointer:
-	mov (%rdx), %rsp
-
-	movaps -24(%rsp), %xmm6
-	movaps -40(%rsp), %xmm7
-	movaps -56(%rsp), %xmm8
-	movaps -72(%rsp), %xmm9
-	movaps -88(%rsp), %xmm10
-	movaps -104(%rsp), %xmm11
-	movaps -120(%rsp), %xmm12
-	movaps -136(%rsp), %xmm13
-	movaps -152(%rsp), %xmm14
-	movaps -168(%rsp), %xmm15
-
-	# Restore callee stack:
-	popq %r15
-	popq %r14
-	popq %r13
-	popq %r12
-	popq %rsi
-	popq %rdi
-	popq %rbx
-	popq %rbp
-
-	# Restore the thread information block:
-	popq %gs:16
-	popq %gs:8
-
-	# Put the first argument into the return value:
-	mov %rcx, %rax
-
-	# We pop the return address and jump to it:
-	ret
-
-.globl coroutine_trampoline
-coroutine_trampoline:
-	# Do not remove this. This forces 16-byte alignment when entering the coroutine.
-	ret
diff --git a/coroutine/win64/Context.asm b/coroutine/win64/Context.asm
deleted file mode 100644
index 8c4dea1c93..0000000000
--- a/coroutine/win64/Context.asm
+++ /dev/null
@@ -1,79 +0,0 @@
-;;
-;;  This file is part of the "Coroutine" project and released under the MIT License.
-;;
-;;  Created by Samuel Williams on 10/5/2018.
-;;  Copyright, 2018, by Samuel Williams.
-;;
-
-.code
-
-coroutine_transfer proc
-	; Save the thread information block:
-	push qword ptr gs:[8]
-	push qword ptr gs:[16]
-
-	; Save caller registers:
-	push rbp
-	push rbx
-	push rdi
-	push rsi
-	push r12
-	push r13
-	push r14
-	push r15
-
-	movaps [rsp - 24], xmm6
-	movaps [rsp - 40], xmm7
-	movaps [rsp - 56], xmm8
-	movaps [rsp - 72], xmm9
-	movaps [rsp - 88], xmm10
-	movaps [rsp - 104], xmm11
-	movaps [rsp - 120], xmm12
-	movaps [rsp - 136], xmm13
-	movaps [rsp - 152], xmm14
-	movaps [rsp - 168], xmm15
-
-	; Save caller stack pointer:
-	mov [rcx], rsp
-
-	; Restore callee stack pointer:
-	mov rsp, [rdx]
-
-	movaps xmm15, [rsp - 168]
-	movaps xmm14, [rsp - 152]
-	movaps xmm13, [rsp - 136]
-	movaps xmm12, [rsp - 120]
-	movaps xmm11, [rsp - 104]
-	movaps xmm10, [rsp - 88]
-	movaps xmm9, [rsp - 72]
-	movaps xmm8, [rsp - 56]
-	movaps xmm7, [rsp - 40]
-	movaps xmm6, [rsp - 24]
-
-	; Restore callee stack:
-	pop r15
-	pop r14
-	pop r13
-	pop r12
-	pop rsi
-	pop rdi
-	pop rbx
-	pop rbp
-
-	; Restore the thread information block:
-	pop qword ptr gs:[16]
-	pop qword ptr gs:[8]
-
-	; Put the first argument into the return value:
-	mov rax, rcx
-
-	; We pop the return address and jump to it:
-	ret
-coroutine_transfer endp
-
-coroutine_trampoline proc
-	; Do not remove this. This forces 16-byte alignment when entering the coroutine.
-	ret
-coroutine_trampoline endp
-
-end
diff --git a/coroutine/win64/Context.h b/coroutine/win64/Context.h
deleted file mode 100644
index e28e6a6ff0..0000000000
--- a/coroutine/win64/Context.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 10/5/2018.
- *  Copyright, 2018, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define COROUTINE __declspec(noreturn) void
-
-enum {
-    COROUTINE_REGISTERS = 8,
-    COROUTINE_XMM_REGISTERS = 1+10*2,
-};
-
-struct coroutine_context
-{
-    void **stack_pointer;
-};
-
-typedef void(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
-
-void coroutine_trampoline();
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->stack_pointer = NULL;
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    // Stack grows down. Force 16-byte alignment.
-    char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
-
-    /* Win64 ABI requires space for arguments */
-    context->stack_pointer -= 4;
-
-    /* Return address */
-    *--context->stack_pointer = 0;
-    *--context->stack_pointer = (void*)start;
-    *--context->stack_pointer = (void*)coroutine_trampoline;
-
-    /* Windows Thread Information Block */
-    /* *--context->stack_pointer = 0; */ /* gs:[0x00] is not used */
-    *--context->stack_pointer = (void*)top; /* gs:[0x08] */
-    *--context->stack_pointer = (void*)stack;  /* gs:[0x10] */
-
-    context->stack_pointer -= COROUTINE_REGISTERS;
-    memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
-    memset(context->stack_pointer - COROUTINE_XMM_REGISTERS, 0, sizeof(void*) * COROUTINE_XMM_REGISTERS);
-}
-
-struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-}
diff --git a/coroutine/x86/Context.S b/coroutine/x86/Context.S
deleted file mode 100644
index 6983f21c3b..0000000000
--- a/coroutine/x86/Context.S
+++ /dev/null
@@ -1,42 +0,0 @@
-##
-##  This file is part of the "Coroutine" project and released under the MIT License.
-##
-##  Created by Samuel Williams on 3/11/2018.
-##  Copyright, 2018, by Samuel Williams.
-##
-
-#define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
-
-.text
-
-.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
-
-	# Save caller registers
-	pushl %ebp
-	pushl %ebx
-	pushl %edi
-	pushl %esi
-
-	# Save caller stack pointer
-	movl %esp, (%ecx)
-
-	# Restore callee stack pointer
-	movl (%edx), %esp
-
-	# Restore callee stack
-	popl %esi
-	popl %edi
-	popl %ebx
-	popl %ebp
-
-	# Save the first argument as the return value
-	movl %ecx, %eax
-
-	# Jump to the address on the stack
-	ret
-
-#if defined(__linux__) && defined(__ELF__)
-.section .note.GNU-stack,"",%progbits
-#endif
diff --git a/coroutine/x86/Context.h b/coroutine/x86/Context.h
deleted file mode 100644
index dfdde24f5d..0000000000
--- a/coroutine/x86/Context.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- *  This file is part of the "Coroutine" project and released under the MIT License.
- *
- *  Created by Samuel Williams on 3/11/2018.
- *  Copyright, 2018, by Samuel Williams.
-*/
-
-#pragma once
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define COROUTINE __attribute__((noreturn, fastcall)) void
-#define COROUTINE_LIMITED_ADDRESS_SPACE
-
-enum {COROUTINE_REGISTERS = 4};
-
-struct coroutine_context
-{
-    void **stack_pointer;
-};
-
-typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self) __attribute__((fastcall));
-
-static inline void coroutine_initialize_main(struct coroutine_context * context) {
-    context->stack_pointer = NULL;
-}
-
-static inline void coroutine_initialize(
-    struct coroutine_context *context,
-    coroutine_start start,
-    void *stack,
-    size_t size
-) {
-    assert(start && stack && size >= 1024);
-
-    // Stack grows down. Force 16-byte alignment.
-    char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
-
-    *--context->stack_pointer = NULL;
-    *--context->stack_pointer = (void*)start;
-
-    context->stack_pointer -= COROUTINE_REGISTERS;
-    memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
-}
-
-struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target) __attribute__((fastcall));
-
-static inline void coroutine_destroy(struct coroutine_context * context)
-{
-    context->stack_pointer = NULL;
-}
diff --git a/coverage/README b/coverage/README
deleted file mode 100644
index 78a01826aa..0000000000
--- a/coverage/README
+++ /dev/null
@@ -1,17 +0,0 @@
-Usage
-
-The make task `update-coverage' retrieves simplecov for coverage report.
-
-COVERAGE=1 make test-all TESTS=test/cgi
-
-it generates test coverage to coverage directory.
-
-Limitation
-
- * test_coverage.rb and test_process.rb broke test suit with SimpleCov
- * some tests failed randomly.
-
-TODO
-
- * more reduce bundled simplecov(additional configuration, formatter, etc)
- * measure rubyspec coverage
diff --git a/cygwin/GNUmakefile.in b/cygwin/GNUmakefile.in
deleted file mode 100644
index e9f186f121..0000000000
--- a/cygwin/GNUmakefile.in
+++ /dev/null
@@ -1,100 +0,0 @@
-gnumake = yes
-
-include Makefile
-
-ENABLE_SHARED=@ENABLE_SHARED@
-DLLWRAP = @DLLWRAP@ --target=@target_os@ --driver-name="$(CC)"
-WINDRES = @WINDRES@ --preprocessor="$(CPP) -xc" -DRC_INVOKED
-STRIP = @STRIP@
-
-ifeq (@target_os@,cygwin)
-  DLL_BASE_NAME := $(LIBRUBY_SO:.dll=)
-else
-  DLL_BASE_NAME := $(RUBY_SO_NAME)
-  DLLWRAP += -mno-cygwin
-  VPATH := $(VPATH):$(srcdir)/win32
-endif
-
-ifneq ($(ENABLE_SHARED),yes)
-  RUBY_EXP = $(RUBY_INSTALL_NAME).exp
-  EXTOBJS = $(RUBY_EXP)
-  LIBRUBYARG = $(LIBRUBY_A)
-  LIBRUBY_SO =
-endif
-
-ifeq ($(RUBY_INSTALL_NAME),ruby)
-  RUBYW_INSTALL_NAME = $(RUBY_INSTALL_NAME)w
-else
-  RUBYW_INSTALL_NAME = $(subst ruby,rubyw,$(RUBY_INSTALL_NAME))
-endif
-
-WPROGRAM = $(RUBYW_INSTALL_NAME)$(EXEEXT)
-
--include uncommon.mk
-
-include $(srcdir)/defs/gmake.mk
-
-SOLIBS := $(DLL_BASE_NAME).res.@OBJEXT@ $(SOLIBS)
-override EXTOBJS += $(if $(filter-out $(RUBYW_INSTALL_NAME),$(@:$(EXEEXT)=)),$(RUBY_INSTALL_NAME),$(@:$(EXEEXT)=)).res.$(OBJEXT)
-RCFILES = $(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(DLL_BASE_NAME).rc
-RUBYDEF = $(DLL_BASE_NAME).def
-
-ruby: $(PROGRAM)
-rubyw: $(WPROGRAM)
-
-$(LIBRUBY): $(RUBY_EXP) $(LIBRUBY_SO)
-$(RUBY_EXP) $(LIBRUBY_SO): $(DLL_BASE_NAME).res.@OBJEXT@
-
-%.res.@OBJEXT@: %.rc
-	$(ECHO) compiling $@
-	$(Q) $(WINDRES) --include-dir . --include-dir $(<D) --include-dir $(srcdir)/win32 $< $@
-
-%.rc: $(RBCONFIG) $(srcdir)/revision.h $(srcdir)/win32/resource.rb
-	$(ECHO) generating $@
-	$(Q) $(MINIRUBY) $(srcdir)/win32/resource.rb \
-	  -ruby_name=$(RUBY_INSTALL_NAME) -rubyw_name=$(RUBYW_INSTALL_NAME) \
-	  -so_name=$(DLL_BASE_NAME) -output=$(*F) \
-	  . $(icondirs) $(srcdir)/win32
-
-$(PROGRAM): $(RUBY_INSTALL_NAME).res.@OBJEXT@
-$(WPROGRAM): $(RUBYW_INSTALL_NAME).res.@OBJEXT@
-	@rm -f $@
-	$(ECHO) linking $@
-	$(Q) $(PURIFY) $(CC) -mwindows -e $(SYMBOL_PREFIX)mainCRTStartup $(LDFLAGS) $(XLDFLAGS) \
-	  $(MAINOBJ) $(EXTOBJS) $(LIBRUBYARG) $(LIBS) -o $@
-$(STUBPROGRAM): $(RUBY_INSTALL_NAME).res.@OBJEXT@
-
-$(RUBY_EXP): $(LIBRUBY_A)
-	$(ECHO) creating $@
-	$(Q) $(DLLWRAP) \
-	  --output-exp=$(RUBY_EXP) \
-	  --export-all $(LIBRUBY_A) $(LIBS) -o $(PROGRAM)
-	$(Q) $(LDSHARED) $(DLDFLAGS) $(OBJS) dmyext.o $(SOLIBS) -o $(PROGRAM)
-	@rm -f $(PROGRAM)
-
-GNUmakefile:	$(srcdir)/cygwin/GNUmakefile.in
-
-ifeq (@target_os@,mingw32)
-$(OBJS) $(MAINOBJ): win32.h
-
-dir.$(OBJEXT) win32/win32.$(OBJEXT): win32/dir.h
-file.$(OBJEXT) win32/win32.$(OBJEXT): win32/file.h
-
-MSYS2_ARG_CONV_EXCL_PARAM = --exclude=;--name=
-
-yes-test-ruby:	 export MSYS2_ARG_CONV_EXCL=$(MSYS2_ARG_CONV_EXCL_PARAM)
-yes-test-all:	 export MSYS2_ARG_CONV_EXCL=$(MSYS2_ARG_CONV_EXCL_PARAM)
-yes-test-almost: export MSYS2_ARG_CONV_EXCL=$(MSYS2_ARG_CONV_EXCL_PARAM)
-
-endif
-
-$(LIBRUBY_SO): $(RUBYDEF)
-
-$(RUBYDEF): $(LIBRUBY_A) $(PREP) $(RBCONFIG)
-	$(ECHO) generating $@
-	$(Q) $(MINIRUBY) $(srcdir)/win32/mkexports.rb -output=$@ $(LIBRUBY_A)
-
-clean-local::
-	@$(RM) $(RUBYDEF)
-	@$(RM) $(RUBY_EXP) $(RCFILES:.rc=.res.@OBJEXT@)
-	@$(RM) $(RCFILES)
diff --git a/debug.c b/debug.c
deleted file mode 100644
index cc6a98a906..0000000000
--- a/debug.c
+++ /dev/null
@@ -1,509 +0,0 @@
-/**********************************************************************
-
-  debug.c -
-
-  $Author$
-  created at: 04/08/25 02:31:54 JST
-
-  Copyright (C) 2004-2007 Koichi Sasada
-
-**********************************************************************/
-
-#include "ruby/internal/config.h"
-
-#include <stdio.h>
-
-#include "eval_intern.h"
-#include "id.h"
-#include "internal/signal.h"
-#include "internal/util.h"
-#include "ruby/encoding.h"
-#include "ruby/io.h"
-#include "ruby/ruby.h"
-#include "ruby/util.h"
-#include "symbol.h"
-#include "vm_core.h"
-#include "vm_debug.h"
-#include "vm_callinfo.h"
-#include "ruby/thread_native.h"
-#include "ractor.h"
-
-/* This is the only place struct RIMemo is actually used */
-struct RIMemo {
-    VALUE flags;
-    VALUE v0;
-    VALUE v1;
-    VALUE v2;
-    VALUE v3;
-};
-
-/* for gdb */
-const union {
-    enum ruby_special_consts    special_consts;
-    enum ruby_value_type        value_type;
-    enum ruby_tag_type          tag_type;
-    enum node_type              node_type;
-    enum ruby_method_ids        method_ids;
-    enum ruby_id_types          id_types;
-    enum ruby_fl_type           fl_types;
-    enum ruby_fl_ushift         fl_ushift;
-    enum ruby_encoding_consts   encoding_consts;
-    enum ruby_coderange_type    enc_coderange_types;
-    enum ruby_econv_flag_type   econv_flag_types;
-    rb_econv_result_t           econv_result;
-    enum ruby_robject_flags     robject_flags;
-    enum ruby_robject_consts    robject_consts;
-    enum ruby_rmodule_flags     rmodule_flags;
-    enum ruby_rstring_flags     rstring_flags;
-    enum ruby_rstring_consts    rstring_consts;
-    enum ruby_rarray_flags      rarray_flags;
-    enum ruby_rarray_consts     rarray_consts;
-    enum {
-	RUBY_FMODE_READABLE		= FMODE_READABLE,
-	RUBY_FMODE_WRITABLE		= FMODE_WRITABLE,
-	RUBY_FMODE_READWRITE		= FMODE_READWRITE,
-	RUBY_FMODE_BINMODE		= FMODE_BINMODE,
-	RUBY_FMODE_SYNC 		= FMODE_SYNC,
-	RUBY_FMODE_TTY			= FMODE_TTY,
-	RUBY_FMODE_DUPLEX		= FMODE_DUPLEX,
-	RUBY_FMODE_APPEND		= FMODE_APPEND,
-	RUBY_FMODE_CREATE		= FMODE_CREATE,
-	RUBY_FMODE_NOREVLOOKUP		= 0x00000100,
-	RUBY_FMODE_TRUNC		= FMODE_TRUNC,
-	RUBY_FMODE_TEXTMODE		= FMODE_TEXTMODE,
-	RUBY_FMODE_PREP 		= 0x00010000,
-	RUBY_FMODE_SETENC_BY_BOM	= FMODE_SETENC_BY_BOM,
-	RUBY_FMODE_UNIX 		= 0x00200000,
-	RUBY_FMODE_INET 		= 0x00400000,
-	RUBY_FMODE_INET6		= 0x00800000,
-
-        RUBY_NODE_TYPESHIFT = NODE_TYPESHIFT,
-        RUBY_NODE_TYPEMASK  = NODE_TYPEMASK,
-        RUBY_NODE_LSHIFT    = NODE_LSHIFT,
-        RUBY_NODE_FL_NEWLINE   = NODE_FL_NEWLINE
-    } various;
-    union {
-	enum imemo_type                     types;
-	enum {RUBY_IMEMO_MASK = IMEMO_MASK} mask;
-	struct RIMemo                      *ptr;
-    } imemo;
-    struct RSymbol *symbol_ptr;
-    enum vm_call_flag_bits vm_call_flags;
-} ruby_dummy_gdb_enums;
-
-const SIGNED_VALUE RUBY_NODE_LMASK = NODE_LMASK;
-
-int
-ruby_debug_print_indent(int level, int debug_level, int indent_level)
-{
-    if (level < debug_level) {
-	fprintf(stderr, "%*s", indent_level, "");
-	fflush(stderr);
-	return TRUE;
-    }
-    return FALSE;
-}
-
-void
-ruby_debug_printf(const char *format, ...)
-{
-    va_list ap;
-    va_start(ap, format);
-    vfprintf(stderr, format, ap);
-    va_end(ap);
-}
-
-#include "gc.h"
-
-VALUE
-ruby_debug_print_value(int level, int debug_level, const char *header, VALUE obj)
-{
-    if (level < debug_level) {
-	char buff[0x100];
-	rb_raw_obj_info(buff, 0x100, obj);
-
-	fprintf(stderr, "DBG> %s: %s\n", header, buff);
-	fflush(stderr);
-    }
-    return obj;
-}
-
-void
-ruby_debug_print_v(VALUE v)
-{
-    ruby_debug_print_value(0, 1, "", v);
-}
-
-ID
-ruby_debug_print_id(int level, int debug_level, const char *header, ID id)
-{
-    if (level < debug_level) {
-	fprintf(stderr, "DBG> %s: %s\n", header, rb_id2name(id));
-	fflush(stderr);
-    }
-    return id;
-}
-
-NODE *
-ruby_debug_print_node(int level, int debug_level, const char *header, const NODE *node)
-{
-    if (level < debug_level) {
-	fprintf(stderr, "DBG> %s: %s (%u)\n", header,
-		ruby_node_name(nd_type(node)), nd_line(node));
-    }
-    return (NODE *)node;
-}
-
-void
-ruby_debug_breakpoint(void)
-{
-    /* */
-}
-
-#if defined _WIN32
-# if RUBY_MSVCRT_VERSION >= 80
-extern int ruby_w32_rtc_error;
-# endif
-#endif
-#if defined _WIN32 || defined __CYGWIN__
-#include <windows.h>
-UINT ruby_w32_codepage[2];
-#endif
-extern int ruby_rgengc_debug;
-extern int ruby_on_ci;
-
-int
-ruby_env_debug_option(const char *str, int len, void *arg)
-{
-    int ov;
-    size_t retlen;
-    unsigned long n;
-#define SET_WHEN(name, var, val) do {	    \
-	if (len == sizeof(name) - 1 &&	    \
-	    strncmp(str, (name), len) == 0) { \
-	    (var) = (val);		    \
-	    return 1;			    \
-	}				    \
-    } while (0)
-#define NAME_MATCH_VALUE(name)				\
-    ((size_t)len >= sizeof(name)-1 &&			\
-     strncmp(str, (name), sizeof(name)-1) == 0 &&	\
-     ((len == sizeof(name)-1 && !(len = 0)) ||		\
-      (str[sizeof(name)-1] == '=' &&			\
-       (str += sizeof(name), len -= sizeof(name), 1))))
-#define SET_UINT(val) do { \
-	n = ruby_scan_digits(str, len, 10, &retlen, &ov); \
-	if (!ov && retlen) { \
-	    val = (unsigned int)n; \
-	} \
-	str += retlen; \
-	len -= retlen; \
-    } while (0)
-#define SET_UINT_LIST(name, vals, num) do { \
-	int i; \
-	for (i = 0; i < (num); ++i) { \
-	    SET_UINT((vals)[i]); \
-	    if (!len || *str != ':') break; \
-	    ++str; \
-	    --len; \
-	} \
-	if (len > 0) { \
-	    fprintf(stderr, "ignored "name" option: `%.*s'\n", len, str); \
-	} \
-    } while (0)
-#define SET_WHEN_UINT(name, vals, num, req) \
-    if (NAME_MATCH_VALUE(name)) SET_UINT_LIST(name, vals, num);
-
-    SET_WHEN("gc_stress", *ruby_initial_gc_stress_ptr, Qtrue);
-    SET_WHEN("core", ruby_enable_coredump, 1);
-    SET_WHEN("ci", ruby_on_ci, 1);
-    if (NAME_MATCH_VALUE("rgengc")) {
-	if (!len) ruby_rgengc_debug = 1;
-	else SET_UINT_LIST("rgengc", &ruby_rgengc_debug, 1);
-	return 1;
-    }
-#if defined _WIN32
-# if RUBY_MSVCRT_VERSION >= 80
-    SET_WHEN("rtc_error", ruby_w32_rtc_error, 1);
-# endif
-#endif
-#if defined _WIN32 || defined __CYGWIN__
-    if (NAME_MATCH_VALUE("codepage")) {
-	if (!len) fprintf(stderr, "missing codepage argument");
-	else SET_UINT_LIST("codepage", ruby_w32_codepage, numberof(ruby_w32_codepage));
-	return 1;
-    }
-#endif
-    return 0;
-}
-
-static void
-set_debug_option(const char *str, int len, void *arg)
-{
-    if (!ruby_env_debug_option(str, len, arg)) {
-	fprintf(stderr, "unexpected debug option: %.*s\n", len, str);
-    }
-}
-
-STATIC_ASSERT(USE_RUBY_DEBUG_LOG, USE_RUBY_DEBUG_LOG ? RUBY_DEVEL : 1);
-
-#if RUBY_DEVEL
-static void setup_debug_log(void);
-#else
-#define setup_debug_log()
-#endif
-
-void
-ruby_set_debug_option(const char *str)
-{
-    ruby_each_words(str, set_debug_option, 0);
-    setup_debug_log();
-}
-
-#if RUBY_DEVEL
-
-// RUBY_DEBUG_LOG features
-// See vm_debug.h comments for details.
-
-#define MAX_DEBUG_LOG             0x1000
-#define MAX_DEBUG_LOG_MESSAGE_LEN 0x0200
-#define MAX_DEBUG_LOG_FILTER      0x0010
-
-enum ruby_debug_log_mode ruby_debug_log_mode;
-
-static struct {
-    char *mem;
-    unsigned int cnt;
-    char filters[MAX_DEBUG_LOG_FILTER][MAX_DEBUG_LOG_FILTER];
-    unsigned int filters_num;
-    rb_nativethread_lock_t lock;
-    FILE *output;
-} debug_log;
-
-static char *
-RUBY_DEBUG_LOG_MEM_ENTRY(unsigned int index)
-{
-    return &debug_log.mem[MAX_DEBUG_LOG_MESSAGE_LEN * index];
-}
-
-static void
-setup_debug_log(void)
-{
-    // check RUBY_DEBUG_LOG
-    const char *log_config = getenv("RUBY_DEBUG_LOG");
-    if (log_config) {
-        fprintf(stderr, "RUBY_DEBUG_LOG=%s\n", log_config);
-
-        if  (strcmp(log_config, "mem") == 0) {
-            debug_log.mem = (char *)malloc(MAX_DEBUG_LOG * MAX_DEBUG_LOG_MESSAGE_LEN);
-            if (debug_log.mem == NULL) {
-                fprintf(stderr, "setup_debug_log failed (can't allocate memory)\n");
-                exit(1);
-            }
-            ruby_debug_log_mode |= ruby_debug_log_memory;
-        }
-        else if (strcmp(log_config, "stderr") == 0) {
-            ruby_debug_log_mode |= ruby_debug_log_stderr;
-        }
-        else {
-            ruby_debug_log_mode |= ruby_debug_log_file;
-            if ((debug_log.output = fopen(log_config, "w")) == NULL) {
-                fprintf(stderr, "can not open %s for RUBY_DEBUG_LOG\n", log_config);
-                exit(1);
-            }
-            setvbuf(debug_log.output, NULL, _IONBF, 0);
-        }
-
-        rb_nativethread_lock_initialize(&debug_log.lock);
-    }
-
-    // check RUBY_DEBUG_LOG_FILTER
-    const char *filter_config = getenv("RUBY_DEBUG_LOG_FILTER");
-    if (filter_config && strlen(filter_config) > 0) {
-        unsigned int i;
-        for (i=0; i<MAX_DEBUG_LOG_FILTER; i++) {
-            const char *p;
-            if ((p = strchr(filter_config, ',')) == NULL) {
-                if (strlen(filter_config) >= MAX_DEBUG_LOG_FILTER) {
-                    fprintf(stderr, "too long: %s (max:%d)\n", filter_config, MAX_DEBUG_LOG_FILTER);
-                    exit(1);
-                }
-                strncpy(debug_log.filters[i], filter_config, MAX_DEBUG_LOG_FILTER - 1);
-                i++;
-                break;
-            }
-            else {
-                size_t n = p - filter_config;
-                if (n >= MAX_DEBUG_LOG_FILTER) {
-                    fprintf(stderr, "too long: %s (max:%d)\n", filter_config, MAX_DEBUG_LOG_FILTER);
-                    exit(1);
-                }
-                strncpy(debug_log.filters[i], filter_config, n);
-                filter_config = p+1;
-            }
-        }
-        debug_log.filters_num = i;
-        for (i=0; i<debug_log.filters_num; i++) {
-            fprintf(stderr, "RUBY_DEBUG_LOG_FILTER[%d]=%s\n", i, debug_log.filters[i]);
-        }
-    }
-}
-
-bool
-ruby_debug_log_filter(const char *func_name)
-{
-    if (debug_log.filters_num > 0) {
-        for (unsigned int i = 0; i<debug_log.filters_num; i++) {
-            if (strstr(func_name, debug_log.filters[i]) != NULL) {
-                return true;
-            }
-        }
-        return false;
-    }
-    else {
-        return true;
-    }
-}
-
-static const char *
-pretty_filename(const char *path)
-{
-    // basename is one idea.
-    const char *s;
-    while ((s = strchr(path, '/')) != NULL) {
-        path = s+1;
-    }
-    return path;
-}
-
-void
-ruby_debug_log(const char *file, int line, const char *func_name, const char *fmt, ...)
-{
-    char buff[MAX_DEBUG_LOG_MESSAGE_LEN] = {0};
-    int len = 0;
-    int r = 0;
-
-    // message title
-    if (func_name && len < MAX_DEBUG_LOG_MESSAGE_LEN) {
-        r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN, "%s\t", func_name);
-        if (r < 0) rb_bug("ruby_debug_log returns %d\n", r);
-        len += r;
-    }
-
-    // message
-    if (fmt && len < MAX_DEBUG_LOG_MESSAGE_LEN) {
-        va_list args;
-        va_start(args, fmt);
-        r = vsnprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, fmt, args);
-        va_end(args);
-        if (r < 0) rb_bug("ruby_debug_log vsnprintf() returns %d", r);
-        len += r;
-    }
-
-    // optional information
-
-    // C location
-    if (file && len < MAX_DEBUG_LOG_MESSAGE_LEN) {
-        r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN, "\t%s:%d", pretty_filename(file), line);
-        if (r < 0) rb_bug("ruby_debug_log returns %d\n", r);
-        len += r;
-    }
-
-    // Ruby location
-    int ruby_line;
-    const char *ruby_file = rb_source_location_cstr(&ruby_line);
-    if (len < MAX_DEBUG_LOG_MESSAGE_LEN) {
-        if (ruby_file) {
-            r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\t%s:%d", pretty_filename(ruby_file), ruby_line);
-        }
-        else {
-            r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\t");
-        }
-        if (r < 0) rb_bug("ruby_debug_log returns %d\n", r);
-        len += r;
-    }
-
-    // ractor information
-    if (GET_VM()->ractor.cnt > 1) {
-        rb_ractor_t *cr = GET_RACTOR();
-        if (r && len < MAX_DEBUG_LOG_MESSAGE_LEN) {
-            r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\tr:#%u/%u",
-                         (unsigned int)rb_ractor_id(cr), GET_VM()->ractor.cnt);
-            if (r < 0) rb_bug("ruby_debug_log returns %d\n", r);
-            len += r;
-        }
-    }
-
-    // thread information
-    if (!rb_thread_alone()) {
-        const rb_thread_t *th = GET_THREAD();
-        if (r && len < MAX_DEBUG_LOG_MESSAGE_LEN) {
-            r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\tth:%p", (void *)th);
-            if (r < 0) rb_bug("ruby_debug_log returns %d\n", r);
-            len += r;
-        }
-    }
-
-    rb_nativethread_lock_lock(&debug_log.lock);
-    {
-        unsigned int cnt = debug_log.cnt++;
-
-        if (ruby_debug_log_mode & ruby_debug_log_memory) {
-            unsigned int index = cnt % MAX_DEBUG_LOG;
-            char *dst = RUBY_DEBUG_LOG_MEM_ENTRY(index);
-            strncpy(dst, buff, MAX_DEBUG_LOG_MESSAGE_LEN);
-        }
-        if (ruby_debug_log_mode & ruby_debug_log_stderr) {
-            fprintf(stderr, "%4u: %s\n", cnt, buff);
-        }
-        if (ruby_debug_log_mode & ruby_debug_log_file) {
-            fprintf(debug_log.output, "%u\t%s\n", cnt, buff);
-        }
-    }
-    rb_nativethread_lock_unlock(&debug_log.lock);
-}
-
-// for debugger
-static void
-debug_log_dump(FILE *out, unsigned int n)
-{
-    if (ruby_debug_log_mode & ruby_debug_log_memory) {
-        unsigned int size = debug_log.cnt > MAX_DEBUG_LOG ? MAX_DEBUG_LOG : debug_log.cnt;
-        unsigned int current_index = debug_log.cnt % MAX_DEBUG_LOG;
-        if (n == 0) n = size;
-        if (n > size) n = size;
-
-        for (unsigned int i=0; i<n; i++) {
-            int index = current_index - size + i;
-            if (index < 0) index += MAX_DEBUG_LOG;
-            VM_ASSERT(index <= MAX_DEBUG_LOG);
-            const char *mesg = RUBY_DEBUG_LOG_MEM_ENTRY(index);;
-            fprintf(out, "%4u: %s\n", debug_log.cnt - size + i, mesg);
-        }
-    }
-    else {
-        fprintf(stderr, "RUBY_DEBUG_LOG=mem is not specified.");
-    }
-}
-
-// for debuggers
-
-void
-ruby_debug_log_print(unsigned int n)
-{
-    debug_log_dump(stderr, n);
-}
-
-void
-ruby_debug_log_dump(const char *fname, unsigned int n)
-{
-    FILE *fp = fopen(fname, "w");
-    if (fp == NULL) {
-        fprintf(stderr, "can't open %s. give up.\n", fname);
-    }
-    else {
-        debug_log_dump(fp, n);
-        fclose(fp);
-    }
-}
-#endif // #if RUBY_DEVEL
diff --git a/debug_counter.c b/debug_counter.c
deleted file mode 100644
index af858115d2..0000000000
--- a/debug_counter.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/**********************************************************************
-
-  debug_counter.c -
-
-  created at: Tue Feb 21 16:51:18 2017
-
-  Copyright (C) 2017 Koichi Sasada
-
-**********************************************************************/
-
-#include "internal.h"
-#include "debug_counter.h"
-#include <stdio.h>
-#include <locale.h>
-
-#if USE_DEBUG_COUNTER
-static const char *const debug_counter_names[] = {
-    ""
-#define RB_DEBUG_COUNTER(name) #name,
-#include "debug_counter.h"
-#undef RB_DEBUG_COUNTER
-};
-
-MJIT_SYMBOL_EXPORT_BEGIN
-size_t rb_debug_counter[numberof(debug_counter_names)];
-MJIT_SYMBOL_EXPORT_END
-
-int debug_counter_disable_show_at_exit = 0;
-
-// note that this operation is not atomic.
-void
-ruby_debug_counter_reset(void)
-{
-    for (int i = 0; i < RB_DEBUG_COUNTER_MAX; i++) {
-        switch (i) {
-          case RB_DEBUG_COUNTER_mjit_length_unit_queue:
-          case RB_DEBUG_COUNTER_mjit_length_active_units:
-          case RB_DEBUG_COUNTER_mjit_length_compact_units:
-          case RB_DEBUG_COUNTER_mjit_length_stale_units:
-            // These counters may be decreased and should not be reset.
-            break;
-          default:
-            rb_debug_counter[i] = 0;
-            break;
-        }
-    }
-}
-
-// note that this operation is not atomic.
-size_t
-ruby_debug_counter_get(const char **names_ptr, size_t *counters_ptr)
-{
-    int i;
-    if (names_ptr != NULL) {
-        for (i=0; i<RB_DEBUG_COUNTER_MAX; i++) {
-            names_ptr[i] = debug_counter_names[i];
-        }
-    }
-    if (counters_ptr != NULL) {
-        for (i=0; i<RB_DEBUG_COUNTER_MAX; i++) {
-            counters_ptr[i] = rb_debug_counter[i];
-        }
-    }
-
-    return RB_DEBUG_COUNTER_MAX;
-}
-
-void
-ruby_debug_counter_show_at_exit(int enable)
-{
-    debug_counter_disable_show_at_exit = !enable;
-}
-
-void
-rb_debug_counter_show_results(const char *msg)
-{
-    const char *env = getenv("RUBY_DEBUG_COUNTER_DISABLE");
-
-    setlocale(LC_NUMERIC, "");
-
-    if (env == NULL || strcmp("1", env) != 0) {
-	int i;
-        fprintf(stderr, "[RUBY_DEBUG_COUNTER]\t%d %s\n", getpid(), msg);
-	for (i=0; i<RB_DEBUG_COUNTER_MAX; i++) {
-            fprintf(stderr, "[RUBY_DEBUG_COUNTER]\t%-30s\t%'14"PRIuSIZE"\n",
-		    debug_counter_names[i],
-		    rb_debug_counter[i]);
-	}
-    }
-}
-
-VALUE
-rb_debug_counter_show(RB_UNUSED_VAR(VALUE klass))
-{
-    rb_debug_counter_show_results("show_debug_counters");
-    ruby_debug_counter_show_at_exit(FALSE);
-    return Qnil;
-}
-
-VALUE
-rb_debug_counter_reset(RB_UNUSED_VAR(VALUE klass))
-{
-    ruby_debug_counter_reset();
-    return Qnil;
-}
-
-__attribute__((destructor))
-static void
-debug_counter_show_results_at_exit(void)
-{
-    if (debug_counter_disable_show_at_exit == 0) {
-        rb_debug_counter_show_results("normal exit.");
-    }
-}
-#else
-void
-rb_debug_counter_show_results(const char *msg)
-{
-}
-
-size_t
-ruby_debug_counter_get(const char **names_ptr, size_t *counters_ptr)
-{
-    return 0;
-}
-void
-ruby_debug_counter_reset(void)
-{
-}
-
-void
-ruby_debug_counter_show_at_exit(int enable)
-{
-}
-
-#endif /* USE_DEBUG_COUNTER */
diff --git a/debug_counter.h b/debug_counter.h
deleted file mode 100644
index 5935087e08..0000000000
--- a/debug_counter.h
+++ /dev/null
@@ -1,423 +0,0 @@
-/**********************************************************************
-
-  debug_counter.h -
-
-  created at: Tue Feb 21 16:51:18 2017
-
-  Copyright (C) 2017 Koichi Sasada
-
-**********************************************************************/
-
-#ifndef USE_DEBUG_COUNTER
-#define USE_DEBUG_COUNTER 0
-#endif
-
-#ifdef RB_DEBUG_COUNTER
-
-// method cache (IMC: inline method cache)
-RB_DEBUG_COUNTER(mc_inline_hit)              // IMC hit
-RB_DEBUG_COUNTER(mc_inline_miss_klass)       // IMC miss by different class
-RB_DEBUG_COUNTER(mc_inline_miss_invalidated) // IMC miss by invalidated ME
-RB_DEBUG_COUNTER(mc_cme_complement)          // number of acquiring complement CME
-RB_DEBUG_COUNTER(mc_cme_complement_hit)      // number of cache hit for complemented CME
-
-RB_DEBUG_COUNTER(mc_search)                  // count for method lookup in class tree
-RB_DEBUG_COUNTER(mc_search_notfound)         //           method lookup, but not found
-RB_DEBUG_COUNTER(mc_search_super)            // total traversed classes
-
-// callinfo
-RB_DEBUG_COUNTER(ci_packed)  // number of packed CI
-RB_DEBUG_COUNTER(ci_kw)      //           non-packed CI w/ keywords
-RB_DEBUG_COUNTER(ci_nokw)    //           non-packed CI w/o keywords
-RB_DEBUG_COUNTER(ci_runtime) //           creating temporary CI
-
-// callcache
-RB_DEBUG_COUNTER(cc_new)        // number of CC
-RB_DEBUG_COUNTER(cc_temp)       //           dummy CC (stack-allocated)
-RB_DEBUG_COUNTER(cc_found_ccs)  // count for CC lookup success in CCS
-
-RB_DEBUG_COUNTER(cc_ent_invalidate) // count for invalidating cc (cc->klass = 0)
-RB_DEBUG_COUNTER(cc_cme_invalidate) // count for invalidating CME
-
-RB_DEBUG_COUNTER(cc_invalidate_leaf)          // count for invalidating klass if klass has no-sublcasses
-RB_DEBUG_COUNTER(cc_invalidate_leaf_ccs)      //                        corresponding CCS
-RB_DEBUG_COUNTER(cc_invalidate_leaf_callable) //                        complimented cache (no-subclasses)
-RB_DEBUG_COUNTER(cc_invalidate_tree)          // count for invalidating klass if klass has sublcasses
-RB_DEBUG_COUNTER(cc_invalidate_tree_cme)      //                        cme if cme is found in this class or superclasses
-RB_DEBUG_COUNTER(cc_invalidate_tree_callable) //                        complimented cache (subclasses)
-
-RB_DEBUG_COUNTER(ccs_free)   // count for free'ing ccs
-RB_DEBUG_COUNTER(ccs_maxlen) // maximum length of ccs
-RB_DEBUG_COUNTER(ccs_found)  // count for finding corresponding ccs on method lookup
-
-// iseq
-RB_DEBUG_COUNTER(iseq_num)    // number of total created iseq
-RB_DEBUG_COUNTER(iseq_cd_num) // number of total created cd (call_data)
-
-/*
- * call cache fastpath usage
- */
-RB_DEBUG_COUNTER(ccf_general)
-RB_DEBUG_COUNTER(ccf_iseq_setup)
-RB_DEBUG_COUNTER(ccf_iseq_setup_0start)
-RB_DEBUG_COUNTER(ccf_iseq_setup_tailcall_0start)
-RB_DEBUG_COUNTER(ccf_iseq_fix) /* several functions created with tool/mk_call_iseq_optimized.rb */
-RB_DEBUG_COUNTER(ccf_iseq_opt) /* has_opt == TRUE (has optional parameters), but other flags are FALSE */
-RB_DEBUG_COUNTER(ccf_iseq_kw1) /* vm_call_iseq_setup_kwparm_kwarg() */
-RB_DEBUG_COUNTER(ccf_iseq_kw2) /* vm_call_iseq_setup_kwparm_nokwarg() */
-RB_DEBUG_COUNTER(ccf_cfunc)
-RB_DEBUG_COUNTER(ccf_cfunc_with_frame)
-RB_DEBUG_COUNTER(ccf_ivar) /* attr_reader */
-RB_DEBUG_COUNTER(ccf_attrset) /* attr_writer */
-RB_DEBUG_COUNTER(ccf_method_missing)
-RB_DEBUG_COUNTER(ccf_zsuper)
-RB_DEBUG_COUNTER(ccf_bmethod)
-RB_DEBUG_COUNTER(ccf_opt_send)
-RB_DEBUG_COUNTER(ccf_opt_call)
-RB_DEBUG_COUNTER(ccf_opt_block_call)
-RB_DEBUG_COUNTER(ccf_super_method)
-
-/*
- * control frame push counts.
- *
- * * frame_push: frame push counts.
- * * frame_push_*: frame push counts per each type.
- * * frame_R2R: Ruby frame to Ruby frame
- * * frame_R2C: Ruby frame to C frame
- * * frame_C2C: C frame to C frame
- * * frame_C2R: C frame to Ruby frame
- */
-RB_DEBUG_COUNTER(frame_push)
-RB_DEBUG_COUNTER(frame_push_method)
-RB_DEBUG_COUNTER(frame_push_block)
-RB_DEBUG_COUNTER(frame_push_class)
-RB_DEBUG_COUNTER(frame_push_top)
-RB_DEBUG_COUNTER(frame_push_cfunc)
-RB_DEBUG_COUNTER(frame_push_ifunc)
-RB_DEBUG_COUNTER(frame_push_eval)
-RB_DEBUG_COUNTER(frame_push_rescue)
-RB_DEBUG_COUNTER(frame_push_dummy)
-
-RB_DEBUG_COUNTER(frame_R2R)
-RB_DEBUG_COUNTER(frame_R2C)
-RB_DEBUG_COUNTER(frame_C2C)
-RB_DEBUG_COUNTER(frame_C2R)
-
-/* instance variable counts
- *
- * * ivar_get_ic_hit/miss: ivar_get inline cache (ic) hit/miss counts (VM insn)
- * * ivar_get_ic_miss_serial: ivar_get ic miss reason by serial (VM insn)
- * * ivar_get_ic_miss_unset:                      ... by unset (VM insn)
- * * ivar_get_ic_miss_noobject:                   ... by "not T_OBJECT" (VM insn)
- * * ivar_set_...: same counts with ivar_set (VM insn)
- * * ivar_get/set_base: call counts of "rb_ivar_get/set()".
- *                      because of (1) ic miss.
- *                                 (2) direct call by C extensions.
- */
-RB_DEBUG_COUNTER(ivar_get_ic_hit)
-RB_DEBUG_COUNTER(ivar_get_ic_miss)
-RB_DEBUG_COUNTER(ivar_get_ic_miss_serial)
-RB_DEBUG_COUNTER(ivar_get_ic_miss_unset)
-RB_DEBUG_COUNTER(ivar_get_ic_miss_noobject)
-RB_DEBUG_COUNTER(ivar_set_ic_hit)
-RB_DEBUG_COUNTER(ivar_set_ic_miss)
-RB_DEBUG_COUNTER(ivar_set_ic_miss_serial)
-RB_DEBUG_COUNTER(ivar_set_ic_miss_unset)
-RB_DEBUG_COUNTER(ivar_set_ic_miss_oorange)
-RB_DEBUG_COUNTER(ivar_set_ic_miss_noobject)
-RB_DEBUG_COUNTER(ivar_get_base)
-RB_DEBUG_COUNTER(ivar_set_base)
-
-/* local variable counts
- *
- * * lvar_get: total lvar get counts (VM insn)
- * * lvar_get_dynamic: lvar get counts if accessing upper env (VM insn)
- * * lvar_set*: same as "get"
- * * lvar_set_slowpath: counts using vm_env_write_slowpath()
- */
-RB_DEBUG_COUNTER(lvar_get)
-RB_DEBUG_COUNTER(lvar_get_dynamic)
-RB_DEBUG_COUNTER(lvar_set)
-RB_DEBUG_COUNTER(lvar_set_dynamic)
-RB_DEBUG_COUNTER(lvar_set_slowpath)
-
-/* GC counts:
- *
- * * count: simple count
- * * _minor: minor gc
- * * _major: major gc
- * * other suffix is corresponding to last_gc_info or
- *   gc_profile_record_flag in gc.c.
- */
-RB_DEBUG_COUNTER(gc_count)
-RB_DEBUG_COUNTER(gc_minor_newobj)
-RB_DEBUG_COUNTER(gc_minor_malloc)
-RB_DEBUG_COUNTER(gc_minor_method)
-RB_DEBUG_COUNTER(gc_minor_capi)
-RB_DEBUG_COUNTER(gc_minor_stress)
-RB_DEBUG_COUNTER(gc_major_nofree)
-RB_DEBUG_COUNTER(gc_major_oldgen)
-RB_DEBUG_COUNTER(gc_major_shady)
-RB_DEBUG_COUNTER(gc_major_force)
-RB_DEBUG_COUNTER(gc_major_oldmalloc)
-
-RB_DEBUG_COUNTER(gc_isptr_trial)
-RB_DEBUG_COUNTER(gc_isptr_range)
-RB_DEBUG_COUNTER(gc_isptr_align)
-RB_DEBUG_COUNTER(gc_isptr_maybe)
-
-/* object allocation counts:
- *
- * * obj_newobj: newobj counts
- * * obj_newobj_slowpath: newobj with slowpath counts
- * * obj_newobj_wb_unprotected: newobj for wb_unprotected.
- * * obj_free: obj_free() counts
- * * obj_promote: promoted counts (oldgen)
- * * obj_wb_unprotect: wb unprotect counts
- *
- * * obj_[type]_[attr]: *free'ed counts* for each type.
- *                      Note that it is not a allocated counts.
- * * [type]
- *   * _obj: T_OBJECT
- *   * _str: T_STRING
- *   * _ary: T_ARRAY
- *   * _xxx: T_XXX (hash, struct, ...)
- *
- * * [attr]
- *   * _ptr: R?? is not embed.
- *   * _embed: R?? is embed.
- *   * _transient: R?? uses transient heap.
- * * type specific attr.
- *   * str_shared: str is shared.
- *   * str_nofree:        nofree
- *   * str_fstr:          fstr
- *   * hash_empty: hash is empty
- *   * hash_1_4:       has 1 to 4 entries
- *   * hash_5_8:       has 5 to 8 entries
- *   * hash_g8:        has n entries (n>8)
- *   * match_under4:    has under 4 oniguruma regions allocated
- *   * match_ge4:       has n regions allocated (4<=n<8)
- *   * match_ge8:       has n regions allocated (8<=n)
- *   * data_empty: T_DATA but no memory free.
- *   * data_xfree:        free'ed by xfree().
- *   * data_imm_free:     free'ed immediately.
- *   * data_zombie:       free'ed with zombie.
- *   * imemo_*: T_IMEMO with each type.
- */
-RB_DEBUG_COUNTER(obj_newobj)
-RB_DEBUG_COUNTER(obj_newobj_slowpath)
-RB_DEBUG_COUNTER(obj_newobj_wb_unprotected)
-RB_DEBUG_COUNTER(obj_free)
-RB_DEBUG_COUNTER(obj_promote)
-RB_DEBUG_COUNTER(obj_wb_unprotect)
-
-RB_DEBUG_COUNTER(obj_obj_embed)
-RB_DEBUG_COUNTER(obj_obj_transient)
-RB_DEBUG_COUNTER(obj_obj_ptr)
-
-RB_DEBUG_COUNTER(obj_str_ptr)
-RB_DEBUG_COUNTER(obj_str_embed)
-RB_DEBUG_COUNTER(obj_str_shared)
-RB_DEBUG_COUNTER(obj_str_nofree)
-RB_DEBUG_COUNTER(obj_str_fstr)
-
-RB_DEBUG_COUNTER(obj_ary_embed)
-RB_DEBUG_COUNTER(obj_ary_transient)
-RB_DEBUG_COUNTER(obj_ary_ptr)
-RB_DEBUG_COUNTER(obj_ary_extracapa)
-/*
-  ary_shared_create: shared ary by Array#dup and so on.
-  ary_shared: finished in shard.
-  ary_shared_root_occupied: shared_root but has only 1 refcnt.
-    The number (ary_shared - ary_shared_root_occupied) is meaningful.
- */
-RB_DEBUG_COUNTER(obj_ary_shared_create)
-RB_DEBUG_COUNTER(obj_ary_shared)
-RB_DEBUG_COUNTER(obj_ary_shared_root_occupied)
-
-RB_DEBUG_COUNTER(obj_hash_empty)
-RB_DEBUG_COUNTER(obj_hash_1)
-RB_DEBUG_COUNTER(obj_hash_2)
-RB_DEBUG_COUNTER(obj_hash_3)
-RB_DEBUG_COUNTER(obj_hash_4)
-RB_DEBUG_COUNTER(obj_hash_5_8)
-RB_DEBUG_COUNTER(obj_hash_g8)
-
-RB_DEBUG_COUNTER(obj_hash_null)
-RB_DEBUG_COUNTER(obj_hash_ar)
-RB_DEBUG_COUNTER(obj_hash_st)
-RB_DEBUG_COUNTER(obj_hash_transient)
-RB_DEBUG_COUNTER(obj_hash_force_convert)
-
-RB_DEBUG_COUNTER(obj_struct_embed)
-RB_DEBUG_COUNTER(obj_struct_transient)
-RB_DEBUG_COUNTER(obj_struct_ptr)
-
-RB_DEBUG_COUNTER(obj_data_empty)
-RB_DEBUG_COUNTER(obj_data_xfree)
-RB_DEBUG_COUNTER(obj_data_imm_free)
-RB_DEBUG_COUNTER(obj_data_zombie)
-
-RB_DEBUG_COUNTER(obj_match_under4)
-RB_DEBUG_COUNTER(obj_match_ge4)
-RB_DEBUG_COUNTER(obj_match_ge8)
-RB_DEBUG_COUNTER(obj_match_ptr)
-
-RB_DEBUG_COUNTER(obj_iclass_ptr)
-RB_DEBUG_COUNTER(obj_class_ptr)
-RB_DEBUG_COUNTER(obj_module_ptr)
-
-RB_DEBUG_COUNTER(obj_bignum_ptr)
-RB_DEBUG_COUNTER(obj_bignum_embed)
-RB_DEBUG_COUNTER(obj_float)
-RB_DEBUG_COUNTER(obj_complex)
-RB_DEBUG_COUNTER(obj_rational)
-
-RB_DEBUG_COUNTER(obj_regexp_ptr)
-RB_DEBUG_COUNTER(obj_file_ptr)
-RB_DEBUG_COUNTER(obj_symbol)
-
-RB_DEBUG_COUNTER(obj_imemo_ment)
-RB_DEBUG_COUNTER(obj_imemo_iseq)
-RB_DEBUG_COUNTER(obj_imemo_env)
-RB_DEBUG_COUNTER(obj_imemo_tmpbuf)
-RB_DEBUG_COUNTER(obj_imemo_ast)
-RB_DEBUG_COUNTER(obj_imemo_cref)
-RB_DEBUG_COUNTER(obj_imemo_svar)
-RB_DEBUG_COUNTER(obj_imemo_throw_data)
-RB_DEBUG_COUNTER(obj_imemo_ifunc)
-RB_DEBUG_COUNTER(obj_imemo_memo)
-RB_DEBUG_COUNTER(obj_imemo_parser_strterm)
-RB_DEBUG_COUNTER(obj_imemo_callinfo)
-RB_DEBUG_COUNTER(obj_imemo_callcache)
-
-/* ar_table */
-RB_DEBUG_COUNTER(artable_hint_hit)
-RB_DEBUG_COUNTER(artable_hint_miss)
-RB_DEBUG_COUNTER(artable_hint_notfound)
-
-/* heap function counts
- *
- * * heap_xmalloc/realloc/xfree: call counts
- */
-RB_DEBUG_COUNTER(heap_xmalloc)
-RB_DEBUG_COUNTER(heap_xrealloc)
-RB_DEBUG_COUNTER(heap_xfree)
-
-/* transient_heap */
-RB_DEBUG_COUNTER(theap_alloc)
-RB_DEBUG_COUNTER(theap_alloc_fail)
-RB_DEBUG_COUNTER(theap_evacuate)
-
-/* mjit_exec() counts */
-RB_DEBUG_COUNTER(mjit_exec)
-RB_DEBUG_COUNTER(mjit_exec_not_added)
-RB_DEBUG_COUNTER(mjit_exec_not_ready)
-RB_DEBUG_COUNTER(mjit_exec_not_compiled)
-RB_DEBUG_COUNTER(mjit_exec_call_func)
-
-/* MJIT enqueue / unload */
-RB_DEBUG_COUNTER(mjit_add_iseq_to_process)
-RB_DEBUG_COUNTER(mjit_unload_units)
-
-/* MJIT <-> VM frame push counts */
-RB_DEBUG_COUNTER(mjit_frame_VM2VM)
-RB_DEBUG_COUNTER(mjit_frame_VM2JT)
-RB_DEBUG_COUNTER(mjit_frame_JT2JT)
-RB_DEBUG_COUNTER(mjit_frame_JT2VM)
-
-/* MJIT cancel counters */
-RB_DEBUG_COUNTER(mjit_cancel)
-RB_DEBUG_COUNTER(mjit_cancel_ivar_inline)
-RB_DEBUG_COUNTER(mjit_cancel_exivar_inline)
-RB_DEBUG_COUNTER(mjit_cancel_send_inline)
-RB_DEBUG_COUNTER(mjit_cancel_opt_insn) /* CALL_SIMPLE_METHOD */
-RB_DEBUG_COUNTER(mjit_cancel_invalidate_all)
-RB_DEBUG_COUNTER(mjit_cancel_leave)
-
-/* rb_mjit_unit_list length */
-RB_DEBUG_COUNTER(mjit_length_unit_queue)
-RB_DEBUG_COUNTER(mjit_length_active_units)
-RB_DEBUG_COUNTER(mjit_length_compact_units)
-RB_DEBUG_COUNTER(mjit_length_stale_units)
-
-/* Other MJIT counters */
-RB_DEBUG_COUNTER(mjit_compile_failures)
-
-/* load (not implemented yet) */
-/*
-RB_DEBUG_COUNTER(load_files)
-RB_DEBUG_COUNTER(load_path_is_not_realpath)
-*/
-#endif
-
-#ifndef RUBY_DEBUG_COUNTER_H
-#define RUBY_DEBUG_COUNTER_H 1
-
-#include "ruby/internal/config.h"
-#include <stddef.h>             /* for size_t */
-#include "ruby/ruby.h"          /* for VALUE */
-
-#if !defined(__GNUC__) && USE_DEBUG_COUNTER
-#error "USE_DEBUG_COUNTER is not supported by other than __GNUC__"
-#endif
-
-enum rb_debug_counter_type {
-#define RB_DEBUG_COUNTER(name) RB_DEBUG_COUNTER_##name,
-#include __FILE__
-    RB_DEBUG_COUNTER_MAX
-#undef RB_DEBUG_COUNTER
-};
-
-#if USE_DEBUG_COUNTER
-extern size_t rb_debug_counter[];
-
-inline static int
-rb_debug_counter_add(enum rb_debug_counter_type type, int add, int cond)
-{
-    if (cond) {
-	rb_debug_counter[(int)type] += add;
-    }
-    return cond;
-}
-
-inline static int
-rb_debug_counter_max(enum rb_debug_counter_type type, unsigned int num)
-{
-    if (rb_debug_counter[(int)type] < num) {
-        rb_debug_counter[(int)type] = num;
-        return 1;
-    }
-    else {
-        return 0;
-    }
-}
-
-VALUE rb_debug_counter_reset(VALUE klass);
-VALUE rb_debug_counter_show(VALUE klass);
-
-#define RB_DEBUG_COUNTER_INC(type)                rb_debug_counter_add(RB_DEBUG_COUNTER_##type, 1, 1)
-#define RB_DEBUG_COUNTER_INC_UNLESS(type, cond) (!rb_debug_counter_add(RB_DEBUG_COUNTER_##type, 1, !(cond)))
-#define RB_DEBUG_COUNTER_INC_IF(type, cond)       rb_debug_counter_add(RB_DEBUG_COUNTER_##type, 1, !!(cond))
-#define RB_DEBUG_COUNTER_ADD(type, num)           rb_debug_counter_add(RB_DEBUG_COUNTER_##type, (num), 1)
-#define RB_DEBUG_COUNTER_SETMAX(type, num)        rb_debug_counter_max(RB_DEBUG_COUNTER_##type, (unsigned int)(num))
-
-#else
-#define RB_DEBUG_COUNTER_INC(type)              ((void)0)
-#define RB_DEBUG_COUNTER_INC_UNLESS(type, cond) (!!(cond))
-#define RB_DEBUG_COUNTER_INC_IF(type, cond)     (!!(cond))
-#define RB_DEBUG_COUNTER_ADD(type, num)         ((void)0)
-#define RB_DEBUG_COUNTER_SETMAX(type, num)      0
-#endif
-
-void rb_debug_counter_show_results(const char *msg);
-
-RUBY_SYMBOL_EXPORT_BEGIN
-
-size_t ruby_debug_counter_get(const char **names_ptr, size_t *counters_ptr);
-void ruby_debug_counter_reset(void);
-void ruby_debug_counter_show_at_exit(int enable);
-
-RUBY_SYMBOL_EXPORT_END
-
-#endif /* RUBY_DEBUG_COUNTER_H */
diff --git a/defines.h b/defines.h
new file mode 100644
index 0000000000..a24f9ebff7
--- /dev/null
+++ b/defines.h
@@ -0,0 +1,50 @@
+/************************************************
+
+  defines.h -
+
+  $Author$
+  $Date$
+  created at: Wed May 18 00:21:44 JST 1994
+
+************************************************/
+#ifndef DEFINES_H
+#define DEFINES_H
+
+#define RUBY
+
+/* define EUC/SJIS for default kanji-code */
+#if defined(MSDOS) || defined(__CYGWIN32__) || defined(__human68k__)
+#undef EUC
+#define SJIS
+#else
+#define EUC
+#undef SJIS
+#endif
+
+#ifdef NeXT
+#define DYNAMIC_ENDIAN		/* determine endian at runtime */
+#define S_IXUSR _S_IXUSR        /* execute/search permission, owner */
+#define S_IXGRP 0000010         /* execute/search permission, group */
+#define S_IXOTH 0000001         /* execute/search permission, other */
+#endif /* NeXT */
+
+#ifdef NT
+#include "missing/nt.h"
+#endif
+
+#ifdef sparc
+#define FLUSH_REGISTER_WINDOWS asm("ta 3")
+#else
+#define FLUSH_REGISTER_WINDOWS /* empty */
+#endif
+
+#if defined(__human68k__) || defined(__CYGWIN32__)
+#undef HAVE_RANDOM
+#undef HAVE_SETITIMER
+#endif
+
+#ifndef RUBY_PLATFORM
+#define RUBY_PLATFORM "unknown-unknown"
+#endif
+
+#endif
diff --git a/defs/gmake.mk b/defs/gmake.mk
deleted file mode 100644
index 7e9566fee6..0000000000
--- a/defs/gmake.mk
+++ /dev/null
@@ -1,385 +0,0 @@
-# -*- mode: makefile-gmake; indent-tabs-mode: t -*-
-
-reconfig config.status: export MAKE:=$(MAKE)
-override gnumake_recursive := $(if $(findstring n,$(firstword $(MFLAGS))),,+)
-override mflags := $(filter-out -j%,$(MFLAGS))
-MSPECOPT += $(if $(filter -j%,$(MFLAGS)),-j)
-nproc = $(subst -j,,$(filter -j%,$(MFLAGS)))
-
-CHECK_TARGETS := great exam love check test check% test% btest%
-# expand test targets, and those dependents
-TEST_TARGETS := $(filter $(CHECK_TARGETS),$(MAKECMDGOALS))
-TEST_DEPENDS := $(filter-out commit $(TEST_TARGETS),$(MAKECMDGOALS))
-TEST_TARGETS := $(patsubst great,exam,$(TEST_TARGETS))
-TEST_DEPENDS := $(filter-out great $(TEST_TARGETS),$(TEST_DEPENDS))
-TEST_TARGETS := $(patsubst exam,check,$(TEST_TARGETS))
-TEST_TARGETS := $(patsubst check,test-spec test-all test-tool test-short,$(TEST_TARGETS))
-TEST_TARGETS := $(patsubst test-rubyspec,test-spec,$(TEST_TARGETS))
-TEST_DEPENDS := $(filter-out exam check test-spec $(TEST_TARGETS),$(TEST_DEPENDS))
-TEST_TARGETS := $(patsubst love,check,$(TEST_TARGETS))
-TEST_DEPENDS := $(filter-out love $(TEST_TARGETS),$(TEST_DEPENDS))
-TEST_TARGETS := $(patsubst test-almost,test-all,$(patsubst check-%,test test-%,$(TEST_TARGETS)))
-TEST_DEPENDS := $(filter-out test-all $(TEST_TARGETS),$(TEST_DEPENDS))
-TEST_TARGETS := $(patsubst test,test-short,$(TEST_TARGETS))
-TEST_DEPENDS := $(filter-out test $(TEST_TARGETS),$(TEST_DEPENDS))
-TEST_TARGETS := $(patsubst test-short,btest-ruby test-knownbug test-basic,$(TEST_TARGETS))
-TEST_DEPENDS := $(filter-out test-short $(TEST_TARGETS),$(TEST_DEPENDS))
-TEST_DEPENDS += $(if $(filter great exam love check,$(MAKECMDGOALS)),all exts)
-
-in-srcdir := $(if $(filter-out .,$(srcdir)),$(CHDIR) $(srcdir) &&)
-
-ifneq ($(filter -O0 -Od,$(optflags)),)
-override XCFLAGS := $(filter-out -D_FORTIFY_SOURCE=%,$(XCFLAGS))
-endif
-
-ifeq ($(if $(filter all main exts enc trans libencs libenc libtrans \
-		    prog program ruby ruby$(EXEEXT) \
-		    wprogram rubyw rubyw$(EXEEXT) \
-		    miniruby$(EXEEXT) mini,\
-	     $(MAKECMDGOALS)),,$(MAKECMDGOALS)),)
--include $(SHOWFLAGS)
-endif
-
-ifneq ($(filter universal-%,$(arch)),)
-define archcmd
-%.$(1).S: %.c
-	@$$(ECHO) translating $$< with $(2)
-	$$(Q) $$(CC) $$(CFLAGS_NO_ARCH) $(2) $$(XCFLAGS) $$(CPPFLAGS) $$(COUTFLAG)$$@ -S $$<
-
-%.S: %.$(1).S
-
-%.$(1).i: %.c
-	@$$(ECHO) preprocessing $$< with $(2)
-	$$(Q) $$(CPP) $$(warnflags) $(2) $$(XCFLAGS) $$(CPPFLAGS) $$(COUTFLAG)$$@ -E $$< > $$@
-
-%.i: %.$(1).i
-endef
-
-$(foreach arch,$(arch_flags),\
-	$(eval $(call archcmd,$(patsubst -arch=%,%,$(value arch)),$(patsubst -arch=%,-arch %,$(value arch)))))
-endif
-
-.PHONY: $(addprefix yes-,$(TEST_TARGETS))
-
-ifneq ($(filter-out btest%,$(TEST_TARGETS)),)
-$(addprefix yes-,$(TEST_TARGETS)): $(TEST_DEPENDS)
-endif
-
-ORDERED_TEST_TARGETS := $(filter $(TEST_TARGETS), \
-	btest-ruby test-knownbug test-basic \
-	test-testframework test-tool test-ruby test-all \
-	test-spec test-bundler-prepare test-bundler test-bundler-parallel \
-	)
-prev_test := $(if $(filter test-spec,$(ORDERED_TEST_TARGETS)),test-spec-precheck)
-$(foreach test,$(ORDERED_TEST_TARGETS), \
-	$(eval yes-$(value test) no-$(value test): $(value prev_test)); \
-	$(eval prev_test := $(value test)))
-
-ifneq ($(if $(filter install,$(MAKECMDGOALS)),$(filter uninstall,$(MAKECMDGOALS))),)
-install-targets := $(filter install uninstall,$(MAKECMDGOALS))
-$(word 1,$(install-targets)): $(word 0,$(install-targets))
-endif
-
-ifneq ($(filter reinstall,$(MAKECMDGOALS)),)
-install-prereq: uninstall
-uninstall sudo-precheck: all $(if $(filter all,$(INSTALLDOC)),docs)
-endif
-
-ifneq ($(filter love,$(MAKECMDGOALS)),)
-showflags: up
-sudo-precheck: test yes-test-testframework no-test-testframework
-install-prereq: sudo-precheck
-yes-test-all no-test-all: install
-endif
-yes-test-bundler-parallel: PARALLELRSPECOPTS += $(if $(nproc),-n$(shell expr $(nproc) + $(nproc) / 2))
-
-# Cross reference needs to parse all files at once
-love install reinstall: RDOCFLAGS = --force-update
-
-$(srcdir)/missing/des_tables.c: $(srcdir)/missing/crypt.c
-ifeq ($(if $(filter yes,$(CROSS_COMPILING)),,$(CC)),)
-	touch $@
-else
-	@$(ECHO) building make_des_table
-	$(CC) $(INCFLAGS) $(CPPFLAGS) -DDUMP $(LDFLAGS) $(XLDFLAGS) $(LIBS) -omake_des_table $(srcdir)/missing/crypt.c
-	@[ -x ./make_des_table ]
-	@$(ECHO) generating $@
-	$(Q) $(MAKEDIRS) $(@D)
-	$(Q) ./make_des_table > $@.new
-	$(Q) mv $@.new $@
-	$(Q) $(RMALL) make_des_table*
-endif
-
-config.status: $(wildcard config.cache)
-
-STUBPROGRAM = rubystub$(EXEEXT)
-IGNOREDPATTERNS = %~ .% %.orig %.rej \#%\#
-SCRIPTBINDIR := $(if $(EXEEXT),,exec/)
-SCRIPTPROGRAMS = $(addprefix $(SCRIPTBINDIR),$(addsuffix $(EXEEXT),$(filter-out $(IGNOREDPATTERNS),$(notdir $(wildcard $(srcdir)/libexec/*)))))
-
-stub: $(STUBPROGRAM)
-scriptbin: $(SCRIPTPROGRAMS)
-ifneq ($(STUBPROGRAM),rubystub)
-rubystub: $(STUBPROGRAM)
-endif
-
-$(SCRIPTPROGRAMS): $(STUBPROGRAM)
-
-$(STUBPROGRAM): rubystub.$(OBJEXT) $(LIBRUBY) $(MAINOBJ) $(OBJS) $(EXTOBJS) $(SETUP) $(PREP)
-
-rubystub$(EXEEXT):
-	@rm -f $@
-	$(ECHO) linking $@
-	$(Q) $(PURIFY) $(CC) $(LDFLAGS) $(XLDFLAGS) rubystub.$(OBJEXT) $(EXTOBJS) $(LIBRUBYARG) $(MAINLIBS) $(LIBS) $(EXTLIBS) $(OUTFLAG)$@
-	$(Q) $(POSTLINK)
-	$(if $(STRIP),$(Q) $(STRIP) $@)
-
-$(SCRIPTBINDIR)%$(EXEEXT): bin/% $(STUBPROGRAM) \
-			   $(if $(SCRIPTBINDIR),$(TIMESTAMPDIR)/.exec.time)
-	$(ECHO) generating $@
-	$(Q) { cat $(STUBPROGRAM); echo; sed -e '1{' -e '/^#!.*ruby/!i\' -e '#!/bin/ruby' -e '}' $<; } > $@
-	$(Q) chmod +x $@
-	$(Q) $(POSTLINK)
-
-$(TIMESTAMPDIR)/.exec.time:
-	$(Q) mkdir exec
-	$(Q) exit > $@
-
-.PHONY: commit
-commit: $(if $(filter commit,$(MAKECMDGOALS)),$(filter-out commit,$(MAKECMDGOALS))) up
-	@$(BASERUBY) -C "$(srcdir)" -I./tool/lib -rvcs -e 'VCS.detect(".").commit'
-	+$(Q) \
-	{ \
-	  $(in-srcdir) \
-	  exec sed -f tool/prereq.status defs/gmake.mk template/Makefile.in common.mk; \
-	} | \
-	$(MAKE) $(mflags) Q=$(Q) ECHO=$(ECHO) srcdir="$(srcdir)" srcs_vpath="" CHDIR="$(CHDIR)" \
-		BOOTSTRAPRUBY="$(BOOTSTRAPRUBY)" MINIRUBY="$(BASERUBY)" BASERUBY="$(BASERUBY)" \
-		VCSUP="" ENC_MK=.top-enc.mk REVISION_FORCE=PHONY CONFIGURE="$(CONFIGURE)" -f - \
-		update-src srcs all-incs
-
-GITHUB_RUBY_URL = https://github.com/ruby/ruby
-PR =
-
-COMMIT_GPG_SIGN = $(shell git -C "$(srcdir)" config commit.gpgsign)
-REMOTE_GITHUB_URL = $(shell git -C "$(srcdir)" config remote.github.url)
-COMMITS_NOTES = commits
-
-.PHONY: fetch-github
-fetch-github:
-	$(call fetch-github,$(PR))
-
-define fetch-github
-	$(if $(1),,\
-	  echo "usage:"; echo "  make $@ PR=1234"; \
-	  exit 1; \
-	)
-	$(eval REMOTE_GITHUB_URL := $(REMOTE_GITHUB_URL))
-	$(if $(REMOTE_GITHUB_URL),, \
-	  echo adding $(GITHUB_RUBY_URL) as remote github; \
-	  git -C "$(srcdir)" remote add github $(GITHUB_RUBY_URL); \
-	  git -C "$(srcdir)" config --add remote.github.fetch +refs/notes/$(COMMITS_NOTES):refs/notes/$(COMMITS_NOTES)
-	  $(eval REMOTE_GITHUB_URL := $(GITHUB_RUBY_URL)) \
-	)
-	$(if $(git -C "$(srcdir)" rev-parse "github/pull/$(1)/head" -- 2> /dev/null), \
-	    git -C "$(srcdir)" branch -f "gh-$(1)" "github/pull/$(1)/head", \
-	    git -C "$(srcdir)" fetch -f github "pull/$(1)/head:gh-$(1)" \
-	)
-endef
-
-.PHONY: checkout-github
-checkout-github: fetch-github
-	git -C "$(srcdir)" checkout "gh-$(PR)"
-
-.PHONY: update-github
-update-github: fetch-github
-	$(eval PULL_REQUEST_API := https://api.github.com/repos/ruby/ruby/pulls/$(PR))
-	$(eval PULL_REQUEST_FORK_BRANCH := $(shell \
-	  curl -s $(if $(GITHUB_TOKEN),-H "Authorization: bearer $(GITHUB_TOKEN)") $(PULL_REQUEST_API) | \
-	  $(BASERUBY) -rjson -e 'JSON.parse(STDIN.read)["head"].tap { |h| print "#{h["repo"]["full_name"]} #{h["ref"]}" }' \
-	))
-	$(eval FORK_REPO := $(word 1,$(PULL_REQUEST_FORK_BRANCH)))
-	$(eval PR_BRANCH := $(word 2,$(PULL_REQUEST_FORK_BRANCH)))
-
-	$(eval GITHUB_UPDATE_WORKTREE := $(shell mktemp -d "$(srcdir)/gh-$(PR)-XXXXXX"))
-	git -C "$(srcdir)" worktree add $(notdir $(GITHUB_UPDATE_WORKTREE)) "gh-$(PR)"
-	git -C "$(GITHUB_UPDATE_WORKTREE)" merge master --no-edit
-	@$(BASERUBY) -e 'print "Are you sure to push this to PR=$(PR)? [Y/n]: "; exit(gets.chomp != "n")'
-	git -C "$(srcdir)" remote add fork-$(PR) git@github.com:$(FORK_REPO).git
-	git -C "$(GITHUB_UPDATE_WORKTREE)" push fork-$(PR) gh-$(PR):$(PR_BRANCH)
-	git -C "$(srcdir)" remote rm fork-$(PR)
-	git -C "$(srcdir)" worktree remove $(notdir $(GITHUB_UPDATE_WORKTREE))
-	git -C "$(srcdir)" branch -D gh-$(PR)
-
-.PHONY: pull-github
-pull-github: fetch-github
-	$(call pull-github,$(PR))
-
-define pull-github
-	$(eval GITHUB_MERGE_BASE := $(shell git -C "$(srcdir)" log -1 --format=format:%H))
-	$(eval GITHUB_MERGE_BRANCH := $(shell git -C "$(srcdir)" symbolic-ref --short HEAD))
-	$(eval GITHUB_MERGE_WORKTREE := $(shell mktemp -d "$(srcdir)/gh-$(1)-XXXXXX"))
-	git -C "$(srcdir)" worktree add $(notdir $(GITHUB_MERGE_WORKTREE)) "gh-$(1)"
-	git -C "$(GITHUB_MERGE_WORKTREE)" rebase $(GITHUB_MERGE_BRANCH)
-	$(eval COMMIT_GPG_SIGN := $(COMMIT_GPG_SIGN))
-	$(if $(filter true,$(COMMIT_GPG_SIGN)), \
-	  git -C "$(GITHUB_MERGE_WORKTREE)" rebase --exec "git commit --amend --no-edit -S" "$(GITHUB_MERGE_BASE)"; \
-	)
-	git -C "$(GITHUB_MERGE_WORKTREE)" rebase --exec "git notes add --message 'Merged: $(GITHUB_RUBY_URL)/pull/$(1)'" "$(GITHUB_MERGE_BASE)"
-endef
-
-.PHONY: fetch-github-%
-fetch-github-%:
-	$(call fetch-github,$*)
-
-.PHONY: checkout-github-%
-checkout-github-%: fetch-github-%
-	git -C "$(srcdir)" checkout "gh-$*"
-
-.PHONY: pr-% pull-github-%
-pr-% pull-github-%: fetch-github-%
-	$(call pull-github,$*)
-
-HELP_EXTRA_TASKS = \
-	"  checkout-github:     checkout GitHub Pull Request [PR=1234]" \
-	"  pull-github:         rebase GitHub Pull Request to new worktree [PR=1234]" \
-	"  update-github:       merge master branch and push it to Pull Request [PR=1234]" \
-	""
-
-extract-gems: update-gems
-
-BUNDLED_GEMS := $(shell sed '/^[ 	]*\#/d;/^[ 	]*$$/d;s/[ 	][ 	]*/-/;s/[ 	].*//' $(srcdir)/gems/bundled_gems)
-
-update-gems: | $(patsubst %,gems/%.gem,$(BUNDLED_GEMS))
-
-test-bundler-precheck: | $(srcdir)/.bundle/cache
-
-$(srcdir)/.bundle/cache:
-	$(MAKEDIRS) $(@D) $(CACHE_DIR)
-	$(LN_S) ../.downloaded-cache $@
-
-gems/%.gem:
-	$(ECHO) Downloading bundled gem $*...
-	$(Q) $(BASERUBY) -C "$(srcdir)" \
-	    -I./tool -rdownloader \
-	    -e 'gem = "$(@F)"' \
-	    -e 'old = Dir.glob("gems/"+gem.sub(/-[^-]*$$/, "-*.gem"))' \
-	    -e 'Downloader::RubyGems.download(gem, "gems", nil) and' \
-	    -e '(old.delete("gems/#{gem}"); !old.empty?) and' \
-	    -e 'File.unlink(*old) and' \
-	    -e 'FileUtils.rm_rf(old.map{'"|n|"'n.chomp(".gem")})'
-
-extract-gems: | $(patsubst %,.bundle/gems/%,$(BUNDLED_GEMS))
-
-.bundle/gems/%: gems/%.gem | .bundle/gems
-	$(ECHO) Extracting bundle gem $*...
-	$(Q) $(BASERUBY) -C "$(srcdir)" \
-	    -Itool -rgem-unpack \
-	    -e 'Gem.unpack("gems/$(@F).gem", ".bundle/gems")'
-
-$(srcdir)/.bundle/gems:
-	$(MAKEDIRS) $@
-
-ifneq ($(filter update-bundled_gems refresh-gems,$(MAKECMDGOALS)),)
-update-gems: update-bundled_gems
-endif
-
-ifeq ($(filter 0 1,$(words $(arch_flags))),)
-$(foreach x,$(patsubst -arch=%,%,$(arch_flags)), \
-	  $(eval $$(MJIT_HEADER:.h=)-$(value x).h \
-		 $$(MJIT_MIN_HEADER:.h=)-$(value x).h \
-		 $$(TIMESTAMPDIR)/$$(MJIT_HEADER:.h=)-$(value x).time \
-		 : ARCH_FLAG := -arch $(value x)))
-
-$(foreach x,$(patsubst -arch=%,%,$(arch_flags)), \
-	$(eval $$(MJIT_HEADER:.h=)-$(value x).h: \
-		$$(TIMESTAMPDIR)/$$(MJIT_HEADER:.h=)-$(value x).time))
-
-mjit_min_headers := $(patsubst -arch=%,$(MJIT_MIN_HEADER:.h=-%.h),$(arch_flags))
-$(MJIT_MIN_HEADER): $(mjit_min_headers) $(PREP)
-	@ set -e; set $(patsubst -arch=%,%,$(arch_flags)); \
-	cd $(@D); h=$(@F:.h=); \
-	exec > $(@F).new; \
-	echo '#if 0'; \
-	for arch; do\
-	  echo "#elif defined __$${arch}__"; \
-	  echo "# include \"$$h-$$arch.h\""; \
-	done; \
-	echo "#else"; echo "# error unsupported platform"; echo "#endif"
-	$(IFCHANGE) $@ $@.new
-	$(Q) $(MAKEDIRS) $(MJIT_HEADER_INSTALL_DIR)
-	$(Q) $(MAKE_LINK) $@ $(MJIT_HEADER_INSTALL_DIR)/$(@F)
-
-endif
-
-ifeq ($(if $(wildcard $(filter-out .,$(UNICODE_FILES) $(UNICODE_PROPERTY_FILES))),,\
-	   $(wildcard $(srcdir)/lib/unicode_normalize/tables.rb)),)
-# Needs the dependency when any Unicode data file exists, or
-# normalization tables script doesn't.  Otherwise, when the target
-# only exists, use it as-is.
-.PHONY: $(UNICODE_SRC_DATA_DIR)/.unicode-tables.time
-UNICODE_TABLES_TIMESTAMP =
-$(UNICODE_SRC_DATA_DIR)/.unicode-tables.time: \
-	$(UNICODE_FILES) $(UNICODE_PROPERTY_FILES)
-endif
-
-REVISION_IN_HEADER := $(shell sed -n 's/^\#define RUBY_FULL_REVISION "\(.*\)"/\1/p' $(srcdir)/revision.h 2>/dev/null)
-REVISION_LATEST := $(shell $(CHDIR) $(srcdir) && git log -1 --format=%H 2>/dev/null)
-ifneq ($(REVISION_IN_HEADER),$(REVISION_LATEST))
-# GNU make treat the target as unmodified when its dependents get
-# updated but it is not updated, while others may not.
-$(srcdir)/revision.h: $(REVISION_H)
-endif
-
-# Query on the generated rdoc
-#
-#   $ make rdoc:Integer#+
-rdoc\:%: PHONY
-	$(Q)$(RUNRUBY) $(srcdir)/libexec/ri --no-standard-docs --doc-dir=$(RDOCOUT) $(patsubst rdoc:%,%,$@)
-
-test_%.rb test/%: programs PHONY
-	$(Q)$(exec) $(RUNRUBY) "$(TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" $(TEST_EXCLUDES) $(TESTOPTS) -- $(patsubst test/%,%,$@)
-
-spec/bundler/%: PHONY
-	$(Q)$(exec) $(XRUBY) -C $(srcdir) -Ispec/bundler .bundle/bin/rspec --require spec_helper $(RSPECOPTS) $@
-
-spec/bundler: test-bundler-parallel
-	$(Q)$(NULLCMD)
-
-spec/%: programs exts PHONY
-	$(RUNRUBY) -r./$(arch)-fake $(srcdir)/spec/mspec/bin/mspec-run -B $(srcdir)/spec/default.mspec $(SPECOPTS) $(patsubst %,$(srcdir)/%,$@)
-
-benchmark/%: miniruby$(EXEEXT) update-benchmark-driver PHONY
-	$(Q)$(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" \
-	            $(srcdir)/$@ $(BENCH_OPTS) $(OPTS)
-
-clean-srcs-ext::
-	$(Q)$(RM) $(patsubst $(srcdir)/%,%,$(EXT_SRCS))
-
-clean-srcs-extra::
-	$(Q)$(RM) $(patsubst $(srcdir)/%,%,$(EXTRA_SRCS))
-
-ifneq ($(filter $(VCS),git),)
-update-src::
-	@$(BASERUBY) $(tooldir)/lib/colorize.rb pass "Latest commit hash = $(shell $(filter-out svn,$(VCS)) -C $(srcdir) rev-parse --short=10 HEAD)"
-endif
-
-# Update dependencies and commit the updates to the current branch.
-update-deps:
-	$(eval update_deps := $(shell date +update-deps-%Y%m%d))
-	$(eval deps_dir := $(shell mktemp -d)/$(update_deps))
-	$(eval GIT_DIR := $(shell git -C $(srcdir) rev-parse --absolute-git-dir))
-	git --git-dir=$(GIT_DIR) worktree add $(deps_dir)
-	cp $(tooldir)/config.guess $(tooldir)/config.sub $(deps_dir)/tool
-	[ -f config.status ] && cp config.status $(deps_dir)
-	cd $(deps_dir) && autoconf && \
-	exec ./configure -q -C --enable-load-relative --disable-install-doc --disable-rubygems 'optflags=-O0' 'debugflags=-save-temps=obj -g'
-	$(RUNRUBY) -C $(deps_dir) tool/update-deps --fix
-	git -C $(deps_dir) diff --no-ext-diff --ignore-submodules --exit-code || \
-	    git -C $(deps_dir) commit --all --message='Update dependencies'
-	git --git-dir=$(GIT_DIR) worktree remove $(deps_dir)
-	$(RMDIR) $(dir $(deps_dir))
-	git --git-dir=$(GIT_DIR) merge --no-edit --ff-only $(update_deps)
-	git --git-dir=$(GIT_DIR) branch --delete $(update_deps)
diff --git a/defs/id.def b/defs/id.def
deleted file mode 100644
index fc7a04ffbc..0000000000
--- a/defs/id.def
+++ /dev/null
@@ -1,206 +0,0 @@
-# -*- mode: ruby; coding: us-ascii -*-
-firstline, predefined = __LINE__+1, %[\
-  max
-  min
-  freeze
-  nil?
-  inspect
-  intern
-  object_id
-  const_missing
-  method_missing                                        MethodMissing
-  method_added
-  singleton_method_added
-  method_removed
-  singleton_method_removed
-  method_undefined
-  singleton_method_undefined
-  length
-  size
-  gets
-  succ
-  each
-  proc
-  lambda
-  send
-  __send__
-  __attached__
-  initialize
-  initialize_copy
-  initialize_clone
-  initialize_dup
-  to_int
-  to_ary
-  to_str
-  to_sym
-  to_hash
-  to_proc
-  to_io
-  to_a
-  to_s
-  to_i
-  to_f
-  to_r
-  bt
-  bt_locations
-  call
-  mesg
-  exception
-  locals
-  not                                                   NOT
-  and                                                   AND
-  or                                                    OR
-  div
-  divmod
-  fdiv
-  quo
-  name
-  nil
-
-  _                                                     UScore
-
-  # MUST be successive
-  _1  NUMPARAM_1
-  _2  NUMPARAM_2
-  _3  NUMPARAM_3
-  _4  NUMPARAM_4
-  _5  NUMPARAM_5
-  _6  NUMPARAM_6
-  _7  NUMPARAM_7
-  _8  NUMPARAM_8
-  _9  NUMPARAM_9
-
-  "/*NULL*/"                                            NULL
-  empty?
-  eql?
-  respond_to?                                           Respond_to
-  respond_to_missing?                                   Respond_to_missing
-  <IFUNC>
-  <CFUNC>
-  core#set_method_alias
-  core#set_variable_alias
-  core#undef_method
-  core#define_method
-  core#define_singleton_method
-  core#set_postexe
-  core#hash_merge_ptr
-  core#hash_merge_kwd
-  core#raise
-
-  -                                                     debug#created_info
-
-  $_                                                    LASTLINE
-  $~                                                    BACKREF
-  $!                                                    ERROR_INFO
-]
-
-# VM ID         OP      Parser Token
-token_ops = %[\
-  Dot2          ..      DOT2
-  Dot3          ...     DOT3
-  BDot2         ..      BDOT2
-  BDot3         ...     BDOT3
-  UPlus         +@      UPLUS
-  UMinus        -@      UMINUS
-  Pow           **      POW
-  Cmp           <=>     CMP
-  PLUS          +
-  MINUS         -
-  MULT          *
-  DIV           /
-  MOD           %
-  LTLT          <<      LSHFT
-  GTGT          >>      RSHFT
-  LT            <
-  LE            <=      LEQ
-  GT            >
-  GE            >=      GEQ
-  Eq            ==      EQ
-  Eqq           ===     EQQ
-  Neq           !=      NEQ
-  Not           !
-  And           &
-  Or            |
-  Backquote     `
-  EqTilde       =~      MATCH
-  NeqTilde      !~      NMATCH
-  AREF          []
-  ASET          []=
-  COLON2        ::
-  ANDOP         &&
-  OROP          ||
-  ANDDOT        &.
-]
-
-class KeywordError < RuntimeError
-  def self.raise(mesg, line)
-    super(self, mesg, ["#{__FILE__}:#{line}", *caller])
-  end
-end
-
-predefined_ids = {}
-preserved_ids = []
-local_ids = []
-instance_ids = []
-global_ids = []
-const_ids = []
-class_ids = []
-attrset_ids = []
-token_op_ids = []
-names = {}
-predefined.split(/^/).each_with_index do |line, num|
-  next if /^#/ =~ line
-  line.sub!(/\s+#.*/, '')
-  name, token = line.split
-  next unless name
-  token ||= name
-  if /#/ =~ token
-    token = "_#{token.gsub(/\W+/, '_')}"
-  else
-    token = token.sub(/\?/, 'P').sub(/\A[a-z]/) {$&.upcase}
-    token.sub!(/\A\$/, "_G_")
-    token.sub!(/\A@@/, "_C_")
-    token.sub!(/\A@/, "_I_")
-    token.gsub!(/\W+/, "")
-  end
-  if name == '-'
-    preserved_ids << token
-    next
-  end
-  if prev = names[name]
-    KeywordError.raise("#{name} is already registered at line #{prev+firstline}", firstline+num)
-  end
-  if prev = predefined_ids[token]
-    KeywordError.raise("#{token} is already used for #{prev} at line #{names[prev]+firstline}", firstline+num)
-  end
-  names[name] = num
-  case name
-  when /\A[A-Z]\w*\z/; const_ids
-  when /\A(?!\d)\w+\z/; local_ids
-  when /\A\$(?:\d+|(?!\d)\w+|\W)\z/; global_ids
-  when /\A@@(?!\d)\w+\z/; class_ids
-  when /\A@(?!\d)\w+\z/; instance_ids
-  when /\A((?!\d)\w+)=\z/; attrset_ids
-  else preserved_ids
-  end << token
-  predefined_ids[token] = name
-end
-token_ops.split(/^/).each do |line|
-  next if /^#/ =~ line
-  line.sub!(/\s+#.*/, '')
-  id, op, token = line.split
-  next unless id and op
-  token ||= (id unless /\A\W\z/ =~ op)
-  token_op_ids << [id, op, token]
-end
-{
-  "LOCAL" => local_ids,
-  "INSTANCE" => instance_ids,
-  "GLOBAL" => global_ids,
-  "CONST" => const_ids,
-  "CLASS" => class_ids,
-  "ATTRSET" => attrset_ids,
-  :preserved => preserved_ids,
-  :predefined => predefined_ids,
-  :token_op => token_op_ids,
-}
diff --git a/defs/keywords b/defs/keywords
deleted file mode 100644
index fc30ec2d15..0000000000
--- a/defs/keywords
+++ /dev/null
@@ -1,53 +0,0 @@
-%{
-struct kwtable {short name, id[2], state;};
-const struct kwtable *rb_reserved_word(const char *, unsigned int);
-#ifndef RIPPER
-static const struct kwtable *reserved_word(/*!ANSI{*/const char *, unsigned int/*}!ANSI*/);
-#define rb_reserved_word(str, len) reserved_word(str, len)
-%}
-
-struct kwtable;
-%%
-__ENCODING__, {keyword__ENCODING__, keyword__ENCODING__}, EXPR_END
-__LINE__, {keyword__LINE__, keyword__LINE__}, EXPR_END
-__FILE__, {keyword__FILE__, keyword__FILE__}, EXPR_END
-BEGIN, {keyword_BEGIN, keyword_BEGIN}, EXPR_END
-END, {keyword_END, keyword_END}, EXPR_END
-alias, {keyword_alias, keyword_alias}, EXPR_FNAME|EXPR_FITEM
-and, {keyword_and, keyword_and}, EXPR_VALUE
-begin, {keyword_begin, keyword_begin}, EXPR_BEG
-break, {keyword_break, keyword_break}, EXPR_MID
-case, {keyword_case, keyword_case}, EXPR_VALUE
-class, {keyword_class, keyword_class}, EXPR_CLASS
-def, {keyword_def, keyword_def}, EXPR_FNAME
-defined?, {keyword_defined, keyword_defined}, EXPR_ARG
-do, {keyword_do, keyword_do}, EXPR_BEG
-else, {keyword_else, keyword_else}, EXPR_BEG
-elsif, {keyword_elsif, keyword_elsif}, EXPR_VALUE
-end, {keyword_end, keyword_end}, EXPR_END
-ensure, {keyword_ensure, keyword_ensure}, EXPR_BEG
-false, {keyword_false, keyword_false}, EXPR_END
-for, {keyword_for, keyword_for}, EXPR_VALUE
-if, {keyword_if, modifier_if}, EXPR_VALUE
-in, {keyword_in, keyword_in}, EXPR_VALUE
-module, {keyword_module, keyword_module}, EXPR_VALUE
-next, {keyword_next, keyword_next}, EXPR_MID
-nil, {keyword_nil, keyword_nil}, EXPR_END
-not, {keyword_not, keyword_not}, EXPR_ARG
-or, {keyword_or, keyword_or}, EXPR_VALUE
-redo, {keyword_redo, keyword_redo}, EXPR_END
-rescue, {keyword_rescue, modifier_rescue}, EXPR_MID
-retry, {keyword_retry, keyword_retry}, EXPR_END
-return, {keyword_return, keyword_return}, EXPR_MID
-self, {keyword_self, keyword_self}, EXPR_END
-super, {keyword_super, keyword_super}, EXPR_ARG
-then, {keyword_then, keyword_then}, EXPR_BEG
-true, {keyword_true, keyword_true}, EXPR_END
-undef, {keyword_undef, keyword_undef}, EXPR_FNAME|EXPR_FITEM
-unless, {keyword_unless, modifier_unless}, EXPR_VALUE
-until, {keyword_until, modifier_until}, EXPR_VALUE
-when, {keyword_when, keyword_when}, EXPR_VALUE
-while, {keyword_while, modifier_while}, EXPR_VALUE
-yield, {keyword_yield, keyword_yield}, EXPR_ARG
-%%
-#endif
diff --git a/defs/known_errors.def b/defs/known_errors.def
deleted file mode 100644
index e9694cfbda..0000000000
--- a/defs/known_errors.def
+++ /dev/null
@@ -1,157 +0,0 @@
-E2BIG
-EACCES
-EADDRINUSE
-EADDRNOTAVAIL
-EADV
-EAFNOSUPPORT
-EAGAIN
-EALREADY
-EAUTH
-EBADARCH
-EBADE
-EBADEXEC
-EBADF
-EBADFD
-EBADMACHO
-EBADMSG
-EBADR
-EBADRPC
-EBADRQC
-EBADSLT
-EBFONT
-EBUSY
-ECANCELED
-ECAPMODE
-ECHILD
-ECHRNG
-ECOMM
-ECONNABORTED
-ECONNREFUSED
-ECONNRESET
-EDEADLK
-EDEADLOCK
-EDESTADDRREQ
-EDEVERR
-EDOM
-EDOOFUS
-EDOTDOT
-EDQUOT
-EEXIST
-EFAULT
-EFBIG
-EFTYPE
-EHOSTDOWN
-EHOSTUNREACH
-EHWPOISON
-EIDRM
-EILSEQ
-EINPROGRESS
-EINTR
-EINVAL
-EIO
-EIPSEC
-EISCONN
-EISDIR
-EISNAM
-EKEYEXPIRED
-EKEYREJECTED
-EKEYREVOKED
-EL2HLT
-EL2NSYNC
-EL3HLT
-EL3RST
-ELAST
-ELIBACC
-ELIBBAD
-ELIBEXEC
-ELIBMAX
-ELIBSCN
-ELNRNG
-ELOOP
-EMEDIUMTYPE
-EMFILE
-EMLINK
-EMSGSIZE
-EMULTIHOP
-ENAMETOOLONG
-ENAVAIL
-ENEEDAUTH
-ENETDOWN
-ENETRESET
-ENETUNREACH
-ENFILE
-ENOANO
-ENOATTR
-ENOBUFS
-ENOCSI
-ENODATA
-ENODEV
-ENOENT
-ENOEXEC
-ENOKEY
-ENOLCK
-ENOLINK
-ENOMEDIUM
-ENOMEM
-ENOMSG
-ENONET
-ENOPKG
-ENOPOLICY
-ENOPROTOOPT
-ENOSPC
-ENOSR
-ENOSTR
-ENOSYS
-ENOTBLK
-ENOTCAPABLE
-ENOTCONN
-ENOTDIR
-ENOTEMPTY
-ENOTNAM
-ENOTRECOVERABLE
-ENOTSOCK
-ENOTSUP
-ENOTTY
-ENOTUNIQ
-ENXIO
-EOPNOTSUPP
-EOVERFLOW
-EOWNERDEAD
-EPERM
-EPFNOSUPPORT
-EPIPE
-EPROCLIM
-EPROCUNAVAIL
-EPROGMISMATCH
-EPROGUNAVAIL
-EPROTO
-EPROTONOSUPPORT
-EPROTOTYPE
-EPWROFF
-EQFULL
-ERANGE
-EREMCHG
-EREMOTE
-EREMOTEIO
-ERESTART
-ERFKILL
-EROFS
-ERPCMISMATCH
-ESHLIBVERS
-ESHUTDOWN
-ESOCKTNOSUPPORT
-ESPIPE
-ESRCH
-ESRMNT
-ESTALE
-ESTRPIPE
-ETIME
-ETIMEDOUT
-ETOOMANYREFS
-ETXTBSY
-EUCLEAN
-EUNATCH
-EUSERS
-EWOULDBLOCK
-EXDEV
-EXFULL
diff --git a/defs/lex.c.src b/defs/lex.c.src
deleted file mode 100644
index fc30ec2d15..0000000000
--- a/defs/lex.c.src
+++ /dev/null
@@ -1,53 +0,0 @@
-%{
-struct kwtable {short name, id[2], state;};
-const struct kwtable *rb_reserved_word(const char *, unsigned int);
-#ifndef RIPPER
-static const struct kwtable *reserved_word(/*!ANSI{*/const char *, unsigned int/*}!ANSI*/);
-#define rb_reserved_word(str, len) reserved_word(str, len)
-%}
-
-struct kwtable;
-%%
-__ENCODING__, {keyword__ENCODING__, keyword__ENCODING__}, EXPR_END
-__LINE__, {keyword__LINE__, keyword__LINE__}, EXPR_END
-__FILE__, {keyword__FILE__, keyword__FILE__}, EXPR_END
-BEGIN, {keyword_BEGIN, keyword_BEGIN}, EXPR_END
-END, {keyword_END, keyword_END}, EXPR_END
-alias, {keyword_alias, keyword_alias}, EXPR_FNAME|EXPR_FITEM
-and, {keyword_and, keyword_and}, EXPR_VALUE
-begin, {keyword_begin, keyword_begin}, EXPR_BEG
-break, {keyword_break, keyword_break}, EXPR_MID
-case, {keyword_case, keyword_case}, EXPR_VALUE
-class, {keyword_class, keyword_class}, EXPR_CLASS
-def, {keyword_def, keyword_def}, EXPR_FNAME
-defined?, {keyword_defined, keyword_defined}, EXPR_ARG
-do, {keyword_do, keyword_do}, EXPR_BEG
-else, {keyword_else, keyword_else}, EXPR_BEG
-elsif, {keyword_elsif, keyword_elsif}, EXPR_VALUE
-end, {keyword_end, keyword_end}, EXPR_END
-ensure, {keyword_ensure, keyword_ensure}, EXPR_BEG
-false, {keyword_false, keyword_false}, EXPR_END
-for, {keyword_for, keyword_for}, EXPR_VALUE
-if, {keyword_if, modifier_if}, EXPR_VALUE
-in, {keyword_in, keyword_in}, EXPR_VALUE
-module, {keyword_module, keyword_module}, EXPR_VALUE
-next, {keyword_next, keyword_next}, EXPR_MID
-nil, {keyword_nil, keyword_nil}, EXPR_END
-not, {keyword_not, keyword_not}, EXPR_ARG
-or, {keyword_or, keyword_or}, EXPR_VALUE
-redo, {keyword_redo, keyword_redo}, EXPR_END
-rescue, {keyword_rescue, modifier_rescue}, EXPR_MID
-retry, {keyword_retry, keyword_retry}, EXPR_END
-return, {keyword_return, keyword_return}, EXPR_MID
-self, {keyword_self, keyword_self}, EXPR_END
-super, {keyword_super, keyword_super}, EXPR_ARG
-then, {keyword_then, keyword_then}, EXPR_BEG
-true, {keyword_true, keyword_true}, EXPR_END
-undef, {keyword_undef, keyword_undef}, EXPR_FNAME|EXPR_FITEM
-unless, {keyword_unless, modifier_unless}, EXPR_VALUE
-until, {keyword_until, modifier_until}, EXPR_VALUE
-when, {keyword_when, keyword_when}, EXPR_VALUE
-while, {keyword_while, modifier_while}, EXPR_VALUE
-yield, {keyword_yield, keyword_yield}, EXPR_ARG
-%%
-#endif
diff --git a/defs/opt_insn_unif.def b/defs/opt_insn_unif.def
deleted file mode 100644
index 31ae2eb6a1..0000000000
--- a/defs/opt_insn_unif.def
+++ /dev/null
@@ -1,27 +0,0 @@
-#
-# a definition of instruction unification
-#
-#
-
-__END__
-
-putobject putobject
-putobject putstring
-putobject setlocal
-
-putstring putstring
-putstring putobject
-putstring setlocal
-
-# putnil end
-
-dup setlocal
-
-# from tarai
-getlocal getlocal
-# getlocal send
-
-# from tak, ackermann
-getlocal putobject
-
-
diff --git a/defs/opt_operand.def b/defs/opt_operand.def
deleted file mode 100644
index 887e3da49a..0000000000
--- a/defs/opt_operand.def
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# configuration file for operand union optimization
-#
-# format:
-#   [insn name] op1, op2 ...
-#
-#  wildcard: *
-#
-
-getlocal *, 0
-getlocal *, 1
-setlocal *, 0
-setlocal *, 1
-
-putobject INT2FIX(0)
-putobject INT2FIX(1)
-
-__END__
-
-putobject Qtrue
-putobject Qfalse
-
diff --git a/defs/separated_version.mk b/defs/separated_version.mk
deleted file mode 100644
index 72ee093da7..0000000000
--- a/defs/separated_version.mk
+++ /dev/null
@@ -1,38 +0,0 @@
-# ******** FOR DEVELEPERS ONLY ********
-# Separate version.o into a shared library which varies every
-# revisions, in order to make the rest shareable.
-
-include $(firstword $(wildcard GNUmakefile Makefile))
-
-ifneq ($(filter @executable_path/%,$(DLDFLAGS)),)
-RUBY_VERSION_SO = $(subst ruby,ruby_version,$(LIBRUBY_SO))
-RUBY_VERSION_DLDFLAGS := $(patsubst @executable_path/%/$(LIBRUBY_SO),@loader_path/$(RUBY_VERSION_SO),$(DLDFLAGS)) -exported_symbol=Init_version
-else ifneq ($(findstring -soname,$(DLDFLAGS)),)
-RUBY_VERSION_SO = $(subst ruby,ruby_version,$(LIBRUBY_SO))
-RUBY_VERSION_DLDFLAGS := $(subst ruby,ruby_version,$(DLDFLAGS)) -Wl,-rpath-link,'$${ORIGIN}'
-else
-ERROR
-endif
-
-ifneq ($(RUBY_VERSION_SO),)
-
-version.$(OBJEXT): XCFLAGS := $(subst -fvisibility=hidden,,$(XCFLAGS))
-
-MINIOBJS += version.$(OBJEXT)
-DLDOBJS += $(RUBY_VERSION_SO)
-LIBRUBYARG_SHARED := -lruby_version $(LIBRUBYARG_SHARED)
-$(LIBRUBY_SO): COMMONOBJS := $(filter-out version.$(OBJEXT),$(COMMONOBJS))
-$(LIBRUBY_A): COMMONOBJS := $(sort version.$(OBJEXT) $(COMMONOBJS))
-
-$(LIBRUBY_SO): $(RUBY_VERSION_SO)
-
-$(RUBY_VERSION_SO): version.$(OBJEXT)
-	$(ECHO) linking shared-library $@
-	$(LDSHARED) $(RUBY_VERSION_DLDFLAGS) version.$(OBJEXT) $(OUTFLAG)$@
-	-$(Q) $(MINIRUBY) -e 'ARGV.each{|link|' \
-		-e   'File.delete link rescue nil' \
-		-e   'File.symlink "$(RUBY_VERSION_SO)", link' \
-		-e '}' \
-		$(subst ruby,ruby_version,$(LIBRUBY_ALIASES)) || true
-
-endif
diff --git a/defs/universal.mk b/defs/universal.mk
deleted file mode 100644
index c34a31b356..0000000000
--- a/defs/universal.mk
+++ /dev/null
@@ -1,5 +0,0 @@
-arch_flags := $(filter -arch=%,$(subst -arch ,-arch=,$(ARCH_FLAG)))
-ifeq ($(filter 0 1,$(words $(arch_flags))),)
-override MJIT_HEADER_SUFFIX = -%
-override MJIT_HEADER_ARCH = -$(word 2,$(ARCH_FLAG))
-endif
diff --git a/dir.c b/dir.c
index e5b6705b32..17c6515484 100644
--- a/dir.c
+++ b/dir.c
@@ -1,55 +1,35 @@
-/**********************************************************************
+/************************************************
 
   dir.c -
 
   $Author$
+  $Date$
   created at: Wed Jan  5 09:51:01 JST 1994
 
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
-  Copyright (C) 2000  Network Applied Communication Laboratory, Inc.
-  Copyright (C) 2000  Information-technology Promotion Agency, Japan
+  Copyright (C) 1993-1998 Yukihiro Matsumoto
 
-**********************************************************************/
+************************************************/
 
-#include "ruby/internal/config.h"
+#include "ruby.h"
 
-#include <ctype.h>
-#include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#else
+# define MAXPATHLEN 1024
+#endif
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 
-#ifndef O_CLOEXEC
-#  define O_CLOEXEC 0
-#endif
-
-#ifndef USE_OPENDIR_AT
-# if defined(HAVE_FDOPENDIR) && defined(HAVE_DIRFD) && \
-    defined(HAVE_OPENAT) && defined(HAVE_FSTATAT)
-#   define USE_OPENDIR_AT 1
-# else
-#   define USE_OPENDIR_AT 0
-# endif
-#endif
-
-#if USE_OPENDIR_AT
-# include <fcntl.h>
-#endif
-
-#undef HAVE_DIRENT_NAMLEN
-#if defined HAVE_DIRENT_H && !defined _WIN32
+#if HAVE_DIRENT_H
 # include <dirent.h>
 # define NAMLEN(dirent) strlen((dirent)->d_name)
-#elif defined HAVE_DIRECT_H && !defined _WIN32
-# include <direct.h>
-# define NAMLEN(dirent) strlen((dirent)->d_name)
 #else
 # define dirent direct
 # define NAMLEN(dirent) (dirent)->d_namlen
-# define HAVE_DIRENT_NAMLEN 1
 # if HAVE_SYS_NDIR_H
 #  include <sys/ndir.h>
 # endif
@@ -59,3476 +39,415 @@
 # if HAVE_NDIR_H
 #  include <ndir.h>
 # endif
-# ifdef _WIN32
-#  include "win32/dir.h"
+# ifdef NT
+#  include "missing/dir.h"
 # endif
 #endif
 
-#ifndef HAVE_STDLIB_H
-char *getenv();
-#endif
-
-#ifndef HAVE_STRING_H
-char *strchr(char*,char);
-#endif
-
-#ifdef HAVE_SYS_ATTR_H
-#include <sys/attr.h>
-#endif
-
-#define USE_NAME_ON_FS_REAL_BASENAME 1	/* platform dependent APIs to
-					 * get real basenames */
-#define USE_NAME_ON_FS_BY_FNMATCH 2	/* select the matching
-					 * basename by fnmatch */
-
-#ifdef HAVE_GETATTRLIST
-# define USE_NAME_ON_FS USE_NAME_ON_FS_REAL_BASENAME
-# define RUP32(size) ((size)+3/4)
-# define SIZEUP32(type) RUP32(sizeof(type))
-#elif defined _WIN32
-# define USE_NAME_ON_FS USE_NAME_ON_FS_REAL_BASENAME
-#elif defined DOSISH
-# define USE_NAME_ON_FS USE_NAME_ON_FS_BY_FNMATCH
-#else
-# define USE_NAME_ON_FS 0
-#endif
-
-#ifdef __APPLE__
-# define NORMALIZE_UTF8PATH 1
-# include <sys/param.h>
-# include <sys/mount.h>
-# include <sys/vnode.h>
-#else
-# define NORMALIZE_UTF8PATH 0
-#endif
-
-#include "encindex.h"
-#include "id.h"
-#include "internal.h"
-#include "internal/array.h"
-#include "internal/dir.h"
-#include "internal/encoding.h"
-#include "internal/error.h"
-#include "internal/file.h"
-#include "internal/gc.h"
-#include "internal/io.h"
-#include "internal/vm.h"
-#include "ruby/encoding.h"
-#include "ruby/ruby.h"
-#include "ruby/thread.h"
-#include "ruby/util.h"
-#include "builtin.h"
-
-#ifndef AT_FDCWD
-# define AT_FDCWD -1
-#endif
-
-#define vm_initialized rb_cThread
-
-/* define system APIs */
-#ifdef _WIN32
-# undef chdir
-# define chdir(p) rb_w32_uchdir(p)
-# undef mkdir
-# define mkdir(p, m) rb_w32_umkdir((p), (m))
-# undef rmdir
-# define rmdir(p) rb_w32_urmdir(p)
-# undef opendir
-# define opendir(p) rb_w32_uopendir(p)
-# define ruby_getcwd() rb_w32_ugetcwd(NULL, 0)
-# define IS_WIN32 1
-#else
-# define IS_WIN32 0
-#endif
-
-#if NORMALIZE_UTF8PATH
-# if defined HAVE_FGETATTRLIST || !defined HAVE_GETATTRLIST
-#   define need_normalization(dirp, path) need_normalization(dirp)
-# else
-#   define need_normalization(dirp, path) need_normalization(path)
-# endif
-static inline int
-need_normalization(DIR *dirp, const char *path)
-{
-# if defined HAVE_FGETATTRLIST || defined HAVE_GETATTRLIST
-    u_int32_t attrbuf[SIZEUP32(fsobj_tag_t)];
-    struct attrlist al = {ATTR_BIT_MAP_COUNT, 0, ATTR_CMN_OBJTAG,};
-#   if defined HAVE_FGETATTRLIST
-    int ret = fgetattrlist(dirfd(dirp), &al, attrbuf, sizeof(attrbuf), 0);
-#   else
-    int ret = getattrlist(path, &al, attrbuf, sizeof(attrbuf), 0);
-#   endif
-    if (!ret) {
-	const fsobj_tag_t *tag = (void *)(attrbuf+1);
-	switch (*tag) {
-	  case VT_HFS:
-	  case VT_CIFS:
-	    return TRUE;
-	}
-    }
-# endif
-    return FALSE;
-}
-
-static inline int
-has_nonascii(const char *ptr, size_t len)
-{
-    while (len > 0) {
-	if (!ISASCII(*ptr)) return 1;
-	ptr++;
-	--len;
-    }
-    return 0;
-}
-
-# define IF_NORMALIZE_UTF8PATH(something) something
-#else
-# define IF_NORMALIZE_UTF8PATH(something) /* nothing */
-#endif
-
-#ifndef IFTODT
-# define IFTODT(m)	(((m) & S_IFMT) / ((~S_IFMT & (S_IFMT-1)) + 1))
-#endif
+#include <errno.h>
 
-typedef enum {
-#ifdef DT_UNKNOWN
-    path_exist     = DT_UNKNOWN,
-    path_directory = DT_DIR,
-    path_regular   = DT_REG,
-    path_symlink   = DT_LNK,
-#else
-    path_exist,
-    path_directory = IFTODT(S_IFDIR),
-    path_regular   = IFTODT(S_IFREG),
-    path_symlink   = IFTODT(S_IFLNK),
-#endif
-    path_noent = -1,
-    path_unknown = -2
-} rb_pathtype_t;
-
-#define FNM_NOESCAPE	0x01
-#define FNM_PATHNAME	0x02
-#define FNM_DOTMATCH	0x04
-#define FNM_CASEFOLD	0x08
-#define FNM_EXTGLOB	0x10
-#if CASEFOLD_FILESYSTEM
-#define FNM_SYSCASE	FNM_CASEFOLD
-#else
-#define FNM_SYSCASE	0
-#endif
-#if _WIN32
-#define FNM_SHORTNAME	0x20
-#else
-#define FNM_SHORTNAME	0
+#ifndef NT
+char *getenv();
 #endif
-#define FNM_GLOB_NOSORT 0x40
-
-#define FNM_NOMATCH	1
-#define FNM_ERROR	2
-
-# define Next(p, e, enc) ((p)+ rb_enc_mbclen((p), (e), (enc)))
-# define Inc(p, e, enc) ((p) = Next((p), (e), (enc)))
-
-static char *
-bracket(
-    const char *p, /* pattern (next to '[') */
-    const char *pend,
-    const char *s, /* string */
-    const char *send,
-    int flags,
-    rb_encoding *enc)
-{
-    const int nocase = flags & FNM_CASEFOLD;
-    const int escape = !(flags & FNM_NOESCAPE);
-    unsigned int c1, c2;
-    int r;
-    int ok = 0, not = 0;
-
-    if (p >= pend) return NULL;
-    if (*p == '!' || *p == '^') {
-	not = 1;
-	p++;
-    }
 
-    while (*p != ']') {
-	const char *t1 = p;
-	if (escape && *t1 == '\\')
-	    t1++;
-	if (!*t1)
-	    return NULL;
-	p = t1 + (r = rb_enc_mbclen(t1, pend, enc));
-	if (p >= pend) return NULL;
-	if (p[0] == '-' && p[1] != ']') {
-	    const char *t2 = p + 1;
-	    int r2;
-	    if (escape && *t2 == '\\')
-		t2++;
-	    if (!*t2)
-		return NULL;
-	    p = t2 + (r2 = rb_enc_mbclen(t2, pend, enc));
-	    if (ok) continue;
-	    if ((r <= (send-s) && memcmp(t1, s, r) == 0) ||
-		(r2 <= (send-s) && memcmp(t2, s, r2) == 0)) {
-		ok = 1;
-		continue;
-	    }
-	    c1 = rb_enc_codepoint(s, send, enc);
-	    if (nocase) c1 = rb_enc_toupper(c1, enc);
-	    c2 = rb_enc_codepoint(t1, pend, enc);
-	    if (nocase) c2 = rb_enc_toupper(c2, enc);
-	    if (c1 < c2) continue;
-	    c2 = rb_enc_codepoint(t2, pend, enc);
-	    if (nocase) c2 = rb_enc_toupper(c2, enc);
-	    if (c1 > c2) continue;
-	}
-	else {
-	    if (ok) continue;
-	    if (r <= (send-s) && memcmp(t1, s, r) == 0) {
-		ok = 1;
-		continue;
-	    }
-	    if (!nocase) continue;
-	    c1 = rb_enc_toupper(rb_enc_codepoint(s, send, enc), enc);
-	    c2 = rb_enc_toupper(rb_enc_codepoint(p, pend, enc), enc);
-	    if (c1 != c2) continue;
-	}
-	ok = 1;
-    }
-
-    return ok == not ? NULL : (char *)p + 1;
-}
-
-/* If FNM_PATHNAME is set, only path element will be matched. (up to '/' or '\0')
-   Otherwise, entire string will be matched.
-   End marker itself won't be compared.
-   And if function succeeds, *pcur reaches end marker.
-*/
-#define UNESCAPE(p) (escape && *(p) == '\\' ? (p) + 1 : (p))
-#define ISEND(p) (!*(p) || (pathname && *(p) == '/'))
-#define RETURN(val) return *pcur = p, *scur = s, (val);
-
-static int
-fnmatch_helper(
-    const char **pcur, /* pattern */
-    const char **scur, /* string */
-    int flags,
-    rb_encoding *enc)
-{
-    const int period = !(flags & FNM_DOTMATCH);
-    const int pathname = flags & FNM_PATHNAME;
-    const int escape = !(flags & FNM_NOESCAPE);
-    const int nocase = flags & FNM_CASEFOLD;
-
-    const char *ptmp = 0;
-    const char *stmp = 0;
-
-    const char *p = *pcur;
-    const char *pend = p + strlen(p);
-    const char *s = *scur;
-    const char *send = s + strlen(s);
-
-    int r;
-
-    if (period && *s == '.' && *UNESCAPE(p) != '.') /* leading period */
-	RETURN(FNM_NOMATCH);
-
-    while (1) {
-	switch (*p) {
-	  case '*':
-	    do { p++; } while (*p == '*');
-	    if (ISEND(UNESCAPE(p))) {
-		p = UNESCAPE(p);
-		RETURN(0);
-	    }
-	    if (ISEND(s))
-		RETURN(FNM_NOMATCH);
-	    ptmp = p;
-	    stmp = s;
-	    continue;
-
-	  case '?':
-	    if (ISEND(s))
-		RETURN(FNM_NOMATCH);
-	    p++;
-	    Inc(s, send, enc);
-	    continue;
-
-	  case '[': {
-	    const char *t;
-	    if (ISEND(s))
-		RETURN(FNM_NOMATCH);
-	    if ((t = bracket(p + 1, pend, s, send, flags, enc)) != 0) {
-		p = t;
-		Inc(s, send, enc);
-		continue;
-	    }
-	    goto failed;
-	  }
-	}
-
-	/* ordinary */
-	p = UNESCAPE(p);
-	if (ISEND(s))
-	    RETURN(ISEND(p) ? 0 : FNM_NOMATCH);
-	if (ISEND(p))
-	    goto failed;
-	r = rb_enc_precise_mbclen(p, pend, enc);
-	if (!MBCLEN_CHARFOUND_P(r))
-	    goto failed;
-	if (r <= (send-s) && memcmp(p, s, r) == 0) {
-	    p += r;
-	    s += r;
-	    continue;
-	}
-	if (!nocase) goto failed;
-	if (rb_enc_toupper(rb_enc_codepoint(p, pend, enc), enc) !=
-	    rb_enc_toupper(rb_enc_codepoint(s, send, enc), enc))
-	    goto failed;
-	p += r;
-	Inc(s, send, enc);
-	continue;
-
-      failed: /* try next '*' position */
-	if (ptmp && stmp) {
-	    p = ptmp;
-	    Inc(stmp, send, enc); /* !ISEND(*stmp) */
-	    s = stmp;
-	    continue;
-	}
-	RETURN(FNM_NOMATCH);
-    }
-}
-
-static int
-fnmatch(
-    const char *pattern,
-    rb_encoding *enc,
-    const char *string,
-    int flags)
-{
-    const char *p = pattern;
-    const char *s = string;
-    const char *send = s + strlen(string);
-    const int period = !(flags & FNM_DOTMATCH);
-    const int pathname = flags & FNM_PATHNAME;
-
-    const char *ptmp = 0;
-    const char *stmp = 0;
-
-    if (pathname) {
-	while (1) {
-	    if (p[0] == '*' && p[1] == '*' && p[2] == '/') {
-		do { p += 3; } while (p[0] == '*' && p[1] == '*' && p[2] == '/');
-		ptmp = p;
-		stmp = s;
-	    }
-	    if (fnmatch_helper(&p, &s, flags, enc) == 0) {
-		while (*s && *s != '/') Inc(s, send, enc);
-		if (*p && *s) {
-		    p++;
-		    s++;
-		    continue;
-		}
-		if (!*p && !*s)
-		    return 0;
-	    }
-	    /* failed : try next recursion */
-	    if (ptmp && stmp && !(period && *stmp == '.')) {
-		while (*stmp && *stmp != '/') Inc(stmp, send, enc);
-		if (*stmp) {
-		    p = ptmp;
-		    stmp++;
-		    s = stmp;
-		    continue;
-		}
-	    }
-	    return FNM_NOMATCH;
-	}
-    }
-    else
-	return fnmatch_helper(&p, &s, flags, enc);
-}
-
-VALUE rb_cDir;
-
-struct dir_data {
-    DIR *dir;
-    const VALUE path;
-    rb_encoding *enc;
-};
-
-static void
-dir_mark(void *ptr)
-{
-    struct dir_data *dir = ptr;
-    rb_gc_mark(dir->path);
-}
+static VALUE cDir;
 
 static void
-dir_free(void *ptr)
-{
-    struct dir_data *dir = ptr;
-
-    if (dir->dir) closedir(dir->dir);
-    xfree(dir);
-}
-
-static size_t
-dir_memsize(const void *ptr)
+free_dir(dir)
+    DIR *dir;
 {
-    return sizeof(struct dir_data);
+    if (dir) closedir(dir);
 }
 
-static const rb_data_type_t dir_data_type = {
-    "dir",
-    {dir_mark, dir_free, dir_memsize,},
-    0, 0, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
-};
-
-static VALUE dir_close(VALUE);
+static VALUE dir_close _((VALUE));
 
 static VALUE
-dir_s_alloc(VALUE klass)
-{
-    struct dir_data *dirp;
-    VALUE obj = TypedData_Make_Struct(klass, struct dir_data, &dir_data_type, dirp);
-
-    dirp->dir = NULL;
-    RB_OBJ_WRITE(obj, &dirp->path, Qnil);
-    dirp->enc = NULL;
-
-    return obj;
-}
-
-static void *
-nogvl_opendir(void *ptr)
+dir_s_open(dir_class, dirname)
+    VALUE dir_class, dirname;
 {
-    const char *path = ptr;
-
-    return (void *)opendir(path);
-}
-
-static DIR *
-opendir_without_gvl(const char *path)
-{
-    if (vm_initialized) {
-	union { const void *in; void *out; } u;
-
-	u.in = path;
+    VALUE obj;
+    DIR *dirp;
 
-	return rb_thread_call_without_gvl(nogvl_opendir, u.out, RUBY_UBF_IO, 0);
-    }
-    else
-	return opendir(path);
-}
+    Check_SafeStr(dirname);
 
-static VALUE
-dir_initialize(rb_execution_context_t *ec, VALUE dir, VALUE dirname, VALUE enc)
-{
-    struct dir_data *dp;
-    VALUE orig;
-    const char *path;
-    rb_encoding *fsenc = NIL_P(enc) ? rb_filesystem_encoding() : rb_to_encoding(enc);
-
-    FilePathValue(dirname);
-    orig = rb_str_dup_frozen(dirname);
-    dirname = rb_str_encode_ospath(dirname);
-    dirname = rb_str_dup_frozen(dirname);
-
-    TypedData_Get_Struct(dir, struct dir_data, &dir_data_type, dp);
-    if (dp->dir) closedir(dp->dir);
-    dp->dir = NULL;
-    RB_OBJ_WRITE(dir, &dp->path, Qnil);
-    dp->enc = fsenc;
-    path = RSTRING_PTR(dirname);
-    dp->dir = opendir_without_gvl(path);
-    if (dp->dir == NULL) {
-	int e = errno;
-	if (rb_gc_for_fd(e)) {
-	    dp->dir = opendir_without_gvl(path);
+    dirp = opendir(RSTRING(dirname)->ptr);
+    if (dirp == NULL) {
+	if (errno == EMFILE || errno == ENFILE) {
+	    gc_gc();
+	    dirp = opendir(RSTRING(dirname)->ptr);
 	}
-#ifdef HAVE_GETATTRLIST
-	else if (e == EIO) {
-	    u_int32_t attrbuf[1];
-	    struct attrlist al = {ATTR_BIT_MAP_COUNT, 0};
-	    if (getattrlist(path, &al, attrbuf, sizeof(attrbuf), FSOPT_NOFOLLOW) == 0) {
-		dp->dir = opendir_without_gvl(path);
-	    }
-	}
-#endif
-	if (dp->dir == NULL) {
-	    RB_GC_GUARD(dirname);
-	    rb_syserr_fail_path(e, orig);
+	if (dirp == NULL) {
+	    rb_sys_fail(RSTRING(dirname)->ptr);
 	}
     }
-    RB_OBJ_WRITE(dir, &dp->path, orig);
-
-    return dir;
-}
 
-static VALUE
-dir_s_open(rb_execution_context_t *ec, VALUE klass, VALUE dirname, VALUE enc)
-{
-    struct dir_data *dp;
-    VALUE dir = TypedData_Make_Struct(klass, struct dir_data, &dir_data_type, dp);
-
-    dir_initialize(ec, dir, dirname, enc);
-
-    return dir;
-}
+    obj = Data_Wrap_Struct(dir_class, 0, free_dir, dirp);
 
-static VALUE
-dir_s_close(rb_execution_context_t *ec, VALUE klass, VALUE dir)
-{
-    return dir_close(dir);
-}
-
-NORETURN(static void dir_closed(void));
-
-static void
-dir_closed(void)
-{
-    rb_raise(rb_eIOError, "closed directory");
-}
-
-static struct dir_data *
-dir_get(VALUE dir)
-{
-    rb_check_frozen(dir);
-    return rb_check_typeddata(dir, &dir_data_type);
-}
-
-static struct dir_data *
-dir_check(VALUE dir)
-{
-    struct dir_data *dirp = dir_get(dir);
-    if (!dirp->dir) dir_closed();
-    return dirp;
-}
-
-#define GetDIR(obj, dirp) ((dirp) = dir_check(obj))
-
-
-/*
- *  call-seq:
- *     dir.inspect -> string
- *
- *  Return a string describing this Dir object.
- */
-static VALUE
-dir_inspect(VALUE dir)
-{
-    struct dir_data *dirp;
-
-    TypedData_Get_Struct(dir, struct dir_data, &dir_data_type, dirp);
-    if (!NIL_P(dirp->path)) {
-	VALUE str = rb_str_new_cstr("#<");
-	rb_str_append(str, rb_class_name(CLASS_OF(dir)));
-	rb_str_cat2(str, ":");
-	rb_str_append(str, dirp->path);
-	rb_str_cat2(str, ">");
-	return str;
+    if (iterator_p()) {
+	rb_ensure(rb_yield, obj, dir_close, obj);
     }
-    return rb_funcallv(dir, idTo_s, 0, 0);
-}
-
-/* Workaround for Solaris 10 that does not have dirfd.
-   Note: Solaris 11 (POSIX.1-2008 compliant) has dirfd(3C).
- */
-#if defined(__sun) && !defined(HAVE_DIRFD)
-# if defined(HAVE_DIR_D_FD)
-#  define dirfd(x) ((x)->d_fd)
-#  define HAVE_DIRFD 1
-# elif defined(HAVE_DIR_DD_FD)
-#  define dirfd(x) ((x)->dd_fd)
-#  define HAVE_DIRFD 1
-# endif
-#endif
-
-#ifdef HAVE_DIRFD
-/*
- *  call-seq:
- *     dir.fileno -> integer
- *
- *  Returns the file descriptor used in <em>dir</em>.
- *
- *     d = Dir.new("..")
- *     d.fileno   #=> 8
- *
- *  This method uses dirfd() function defined by POSIX 2008.
- *  NotImplementedError is raised on other platforms, such as Windows,
- *  which doesn't provide the function.
- *
- */
-static VALUE
-dir_fileno(VALUE dir)
-{
-    struct dir_data *dirp;
-    int fd;
 
-    GetDIR(dir, dirp);
-    fd = dirfd(dirp->dir);
-    if (fd == -1)
-	rb_sys_fail("dirfd");
-    return INT2NUM(fd);
+    return obj;
 }
-#else
-#define dir_fileno rb_f_notimplement
-#endif
 
-/*
- *  call-seq:
- *     dir.path -> string or nil
- *     dir.to_path -> string or nil
- *
- *  Returns the path parameter passed to <em>dir</em>'s constructor.
- *
- *     d = Dir.new("..")
- *     d.path   #=> ".."
- */
-static VALUE
-dir_path(VALUE dir)
+static void
+dir_closed()
 {
-    struct dir_data *dirp;
-
-    TypedData_Get_Struct(dir, struct dir_data, &dir_data_type, dirp);
-    if (NIL_P(dirp->path)) return Qnil;
-    return rb_str_dup(dirp->path);
+    Fail("closed directory");
 }
 
-#if defined _WIN32
-static int
-fundamental_encoding_p(rb_encoding *enc)
-{
-    switch (rb_enc_to_index(enc)) {
-      case ENCINDEX_ASCII:
-      case ENCINDEX_US_ASCII:
-      case ENCINDEX_UTF_8:
-	return TRUE;
-      default:
-	return FALSE;
-    }
+#define GetDIR(obj, dirp) {\
+    Data_Get_Struct(obj, DIR, dirp);\
+    if (dirp == NULL) dir_closed();\
 }
-# define READDIR(dir, enc) rb_w32_readdir((dir), (enc))
-#else
-# define READDIR(dir, enc) readdir((dir))
-#endif
 
-/* safe to use without GVL */
-static int
-to_be_skipped(const struct dirent *dp)
-{
-    const char *name = dp->d_name;
-    if (name[0] != '.') return FALSE;
-#ifdef HAVE_DIRENT_NAMLEN
-    switch (NAMLEN(dp)) {
-      case 2:
-	if (name[1] != '.') return FALSE;
-      case 1:
-	return TRUE;
-      default:
-	break;
-    }
-#else
-    if (!name[1]) return TRUE;
-    if (name[1] != '.') return FALSE;
-    if (!name[2]) return TRUE;
-#endif
-    return FALSE;
-}
-
-/*
- *  call-seq:
- *     dir.read -> string or nil
- *
- *  Reads the next entry from <em>dir</em> and returns it as a string.
- *  Returns <code>nil</code> at the end of the stream.
- *
- *     d = Dir.new("testdir")
- *     d.read   #=> "."
- *     d.read   #=> ".."
- *     d.read   #=> "config.h"
- */
 static VALUE
-dir_read(VALUE dir)
+dir_read(dir)
+    VALUE dir;
 {
-    struct dir_data *dirp;
+    DIR *dirp;
     struct dirent *dp;
 
     GetDIR(dir, dirp);
     errno = 0;
-    if ((dp = READDIR(dirp->dir, dirp->enc)) != NULL) {
-	return rb_external_str_new_with_enc(dp->d_name, NAMLEN(dp), dirp->enc);
+    dp = readdir(dirp);
+    if (dp)
+	return str_taint(str_new(dp->d_name, NAMLEN(dp)));
+    else if (errno == 0) {	/* end of stream */
+	return Qnil;
     }
     else {
-	int e = errno;
-	if (e != 0) rb_syserr_fail(e, 0);
-	return Qnil;		/* end of stream */
+	rb_sys_fail(0);
     }
 }
 
-static VALUE dir_each_entry(VALUE, VALUE (*)(VALUE, VALUE), VALUE, int);
-
 static VALUE
-dir_yield(VALUE arg, VALUE path)
-{
-    return rb_yield(path);
-}
-
-/*
- *  call-seq:
- *     dir.each { |filename| block }  -> dir
- *     dir.each                       -> an_enumerator
- *
- *  Calls the block once for each entry in this directory, passing the
- *  filename of each entry as a parameter to the block.
- *
- *  If no block is given, an enumerator is returned instead.
- *
- *     d = Dir.new("testdir")
- *     d.each  {|x| puts "Got #{x}" }
- *
- *  <em>produces:</em>
- *
- *     Got .
- *     Got ..
- *     Got config.h
- *     Got main.rb
- */
-static VALUE
-dir_each(VALUE dir)
-{
-    RETURN_ENUMERATOR(dir, 0, 0);
-    return dir_each_entry(dir, dir_yield, Qnil, FALSE);
-}
-
-static VALUE
-dir_each_entry(VALUE dir, VALUE (*each)(VALUE, VALUE), VALUE arg, int children_only)
+dir_each(dir)
+    VALUE dir;
 {
-    struct dir_data *dirp;
+    DIR *dirp;
     struct dirent *dp;
-    IF_NORMALIZE_UTF8PATH(int norm_p);
+    VALUE file;
 
     GetDIR(dir, dirp);
-    rewinddir(dirp->dir);
-    IF_NORMALIZE_UTF8PATH(norm_p = need_normalization(dirp->dir, RSTRING_PTR(dirp->path)));
-    while ((dp = READDIR(dirp->dir, dirp->enc)) != NULL) {
-	const char *name = dp->d_name;
-	size_t namlen = NAMLEN(dp);
-	VALUE path;
-
-	if (children_only && name[0] == '.') {
-	    if (namlen == 1) continue; /* current directory */
-	    if (namlen == 2 && name[1] == '.') continue; /* parent directory */
-	}
-#if NORMALIZE_UTF8PATH
-	if (norm_p && has_nonascii(name, namlen) &&
-	    !NIL_P(path = rb_str_normalize_ospath(name, namlen))) {
-	    path = rb_external_str_with_enc(path, dirp->enc);
-	}
-	else
-#endif
-	path = rb_external_str_new_with_enc(name, namlen, dirp->enc);
-	(*each)(arg, path);
+    for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
+	file = str_taint(str_new(dp->d_name, NAMLEN(dp)));
+	rb_yield(file);
     }
     return dir;
 }
 
-#ifdef HAVE_TELLDIR
-/*
- *  call-seq:
- *     dir.pos -> integer
- *     dir.tell -> integer
- *
- *  Returns the current position in <em>dir</em>. See also Dir#seek.
- *
- *     d = Dir.new("testdir")
- *     d.tell   #=> 0
- *     d.read   #=> "."
- *     d.tell   #=> 12
- */
 static VALUE
-dir_tell(VALUE dir)
+dir_tell(dir)
+    VALUE dir;
 {
-    struct dir_data *dirp;
-    long pos;
+    DIR *dirp;
+    int pos;
 
+#if !defined(__CYGWIN32__)
     GetDIR(dir, dirp);
-    pos = telldir(dirp->dir);
-    return rb_int2inum(pos);
-}
+    pos = telldir(dirp);
+    return int2inum(pos);
 #else
-#define dir_tell rb_f_notimplement
+    rb_notimplement();
 #endif
+}
 
-#ifdef HAVE_SEEKDIR
-/*
- *  call-seq:
- *     dir.seek( integer ) -> dir
- *
- *  Seeks to a particular location in <em>dir</em>. <i>integer</i>
- *  must be a value returned by Dir#tell.
- *
- *     d = Dir.new("testdir")   #=> #<Dir:0x401b3c40>
- *     d.read                   #=> "."
- *     i = d.tell               #=> 12
- *     d.read                   #=> ".."
- *     d.seek(i)                #=> #<Dir:0x401b3c40>
- *     d.read                   #=> ".."
- */
 static VALUE
-dir_seek(VALUE dir, VALUE pos)
+dir_seek(dir, pos)
+    VALUE dir, pos;
 {
-    struct dir_data *dirp;
-    long p = NUM2LONG(pos);
+    DIR *dirp;
 
+#if !defined(__CYGWIN32__)
     GetDIR(dir, dirp);
-    seekdir(dirp->dir, p);
+    seekdir(dirp, NUM2INT(pos));
     return dir;
-}
 #else
-#define dir_seek rb_f_notimplement
+    rb_notimplement();
 #endif
-
-#ifdef HAVE_SEEKDIR
-/*
- *  call-seq:
- *     dir.pos = integer  -> integer
- *
- *  Synonym for Dir#seek, but returns the position parameter.
- *
- *     d = Dir.new("testdir")   #=> #<Dir:0x401b3c40>
- *     d.read                   #=> "."
- *     i = d.pos                #=> 12
- *     d.read                   #=> ".."
- *     d.pos = i                #=> 12
- *     d.read                   #=> ".."
- */
-static VALUE
-dir_set_pos(VALUE dir, VALUE pos)
-{
-    dir_seek(dir, pos);
-    return pos;
 }
-#else
-#define dir_set_pos rb_f_notimplement
-#endif
 
-/*
- *  call-seq:
- *     dir.rewind -> dir
- *
- *  Repositions <em>dir</em> to the first entry.
- *
- *     d = Dir.new("testdir")
- *     d.read     #=> "."
- *     d.rewind   #=> #<Dir:0x401b3fb0>
- *     d.read     #=> "."
- */
 static VALUE
-dir_rewind(VALUE dir)
+dir_rewind(dir)
+    VALUE dir;
 {
-    struct dir_data *dirp;
+    DIR *dirp;
 
     GetDIR(dir, dirp);
-    rewinddir(dirp->dir);
+    rewinddir(dirp);
     return dir;
 }
 
-/*
- *  call-seq:
- *     dir.close -> nil
- *
- *  Closes the directory stream.
- *  Calling this method on closed Dir object is ignored since Ruby 2.3.
- *
- *     d = Dir.new("testdir")
- *     d.close   #=> nil
- */
 static VALUE
-dir_close(VALUE dir)
-{
-    struct dir_data *dirp;
-
-    dirp = dir_get(dir);
-    if (!dirp->dir) return Qnil;
-    closedir(dirp->dir);
-    dirp->dir = NULL;
-
-    return Qnil;
-}
-
-static void *
-nogvl_chdir(void *ptr)
-{
-    const char *path = ptr;
-
-    return (void *)(VALUE)chdir(path);
-}
-
-static void
-dir_chdir(VALUE path)
+dir_close(dir)
+    VALUE dir;
 {
-    if (chdir(RSTRING_PTR(path)) < 0)
-	rb_sys_fail_path(path);
-}
-
-static int chdir_blocking = 0;
-static VALUE chdir_thread = Qnil;
-
-struct chdir_data {
-    VALUE old_path, new_path;
-    int done;
-};
+    DIR *dirp;
 
-static VALUE
-chdir_yield(VALUE v)
-{
-    struct chdir_data *args = (void *)v;
-    dir_chdir(args->new_path);
-    args->done = TRUE;
-    chdir_blocking++;
-    if (chdir_thread == Qnil)
-	chdir_thread = rb_thread_current();
-    return rb_yield(args->new_path);
-}
+    Data_Get_Struct(dir, DIR, dirp);
+    if (dirp == NULL) dir_closed();
+    closedir(dirp);
+    DATA_PTR(dir) = NULL;
 
-static VALUE
-chdir_restore(VALUE v)
-{
-    struct chdir_data *args = (void *)v;
-    if (args->done) {
-	chdir_blocking--;
-	if (chdir_blocking == 0)
-	    chdir_thread = Qnil;
-	dir_chdir(args->old_path);
-    }
     return Qnil;
 }
 
-/*
- *  call-seq:
- *     Dir.chdir( [ string] ) -> 0
- *     Dir.chdir( [ string] ) {| path | block }  -> anObject
- *
- *  Changes the current working directory of the process to the given
- *  string. When called without an argument, changes the directory to
- *  the value of the environment variable <code>HOME</code>, or
- *  <code>LOGDIR</code>. SystemCallError (probably Errno::ENOENT) if
- *  the target directory does not exist.
- *
- *  If a block is given, it is passed the name of the new current
- *  directory, and the block is executed with that as the current
- *  directory. The original working directory is restored when the block
- *  exits. The return value of <code>chdir</code> is the value of the
- *  block. <code>chdir</code> blocks can be nested, but in a
- *  multi-threaded program an error will be raised if a thread attempts
- *  to open a <code>chdir</code> block while another thread has one
- *  open.
- *
- *     Dir.chdir("/var/spool/mail")
- *     puts Dir.pwd
- *     Dir.chdir("/tmp") do
- *       puts Dir.pwd
- *       Dir.chdir("/usr") do
- *         puts Dir.pwd
- *       end
- *       puts Dir.pwd
- *     end
- *     puts Dir.pwd
- *
- *  <em>produces:</em>
- *
- *     /var/spool/mail
- *     /tmp
- *     /usr
- *     /tmp
- *     /var/spool/mail
- */
 static VALUE
-dir_s_chdir(int argc, VALUE *argv, VALUE obj)
+dir_s_chdir(argc, argv, obj)
+    int argc;
+    VALUE *argv;
+    VALUE obj;
 {
-    VALUE path = Qnil;
+    VALUE path;
+    char *dist = "";
 
-    if (rb_check_arity(argc, 0, 1) == 1) {
-        path = rb_str_encode_ospath(rb_get_path(argv[0]));
+    rb_secure(2);
+    rb_scan_args(argc, argv, "01", &path);
+    if (!NIL_P(path)) {
+	Check_SafeStr(path);
+	dist = RSTRING(path)->ptr;
     }
     else {
-	const char *dist = getenv("HOME");
+	dist = getenv("HOME");
 	if (!dist) {
 	    dist = getenv("LOGDIR");
-	    if (!dist) rb_raise(rb_eArgError, "HOME/LOGDIR not set");
 	}
-	path = rb_str_new2(dist);
-    }
-
-    if (chdir_blocking > 0) {
-	if (!rb_block_given_p() || rb_thread_current() != chdir_thread)
-	    rb_warn("conflicting chdir during another chdir block");
     }
 
-    if (rb_block_given_p()) {
-	struct chdir_data args;
-
-	args.old_path = rb_str_encode_ospath(rb_dir_getwd());
-	args.new_path = path;
-	args.done = FALSE;
-	return rb_ensure(chdir_yield, (VALUE)&args, chdir_restore, (VALUE)&args);
-    }
-    else {
-	char *p = RSTRING_PTR(path);
-	int r = (int)(VALUE)rb_thread_call_without_gvl(nogvl_chdir, p,
-							RUBY_UBF_IO, 0);
-	if (r < 0)
-	    rb_sys_fail_path(path);
-    }
+    if (chdir(dist) < 0)
+	rb_sys_fail(dist);
 
     return INT2FIX(0);
 }
 
-#ifndef _WIN32
-VALUE
-rb_dir_getwd_ospath(void)
+static VALUE
+dir_s_getwd(dir)
+    VALUE dir;
 {
-    char *path;
-    VALUE cwd;
-    VALUE path_guard;
-
-#undef RUBY_UNTYPED_DATA_WARNING
-#define RUBY_UNTYPED_DATA_WARNING 0
-    path_guard = Data_Wrap_Struct((VALUE)0, NULL, RUBY_DEFAULT_FREE, NULL);
-    path = ruby_getcwd();
-    DATA_PTR(path_guard) = path;
-#ifdef __APPLE__
-    cwd = rb_str_normalize_ospath(path, strlen(path));
-#else
-    cwd = rb_str_new2(path);
-#endif
-    DATA_PTR(path_guard) = 0;
-
-    xfree(path);
-    return cwd;
-}
-#endif
+    char path[MAXPATHLEN];
 
-VALUE
-rb_dir_getwd(void)
-{
-    rb_encoding *fs = rb_filesystem_encoding();
-    int fsenc = rb_enc_to_index(fs);
-    VALUE cwd = rb_dir_getwd_ospath();
-
-    switch (fsenc) {
-      case ENCINDEX_US_ASCII:
-	fsenc = ENCINDEX_ASCII;
-      case ENCINDEX_ASCII:
-	break;
-#if defined _WIN32 || defined __APPLE__
-      default:
-	return rb_str_conv_enc(cwd, NULL, fs);
+#ifdef HAVE_GETCWD
+    if (getcwd(path, sizeof(path)) == 0) rb_sys_fail(path);
+#else
+    extern char *getwd();
+    if (getwd(path) == 0) rb_sys_fail(path);
 #endif
-    }
-    return rb_enc_associate_index(cwd, fsenc);
-}
 
-/*
- *  call-seq:
- *     Dir.getwd -> string
- *     Dir.pwd -> string
- *
- *  Returns the path to the current working directory of this process as
- *  a string.
- *
- *     Dir.chdir("/tmp")   #=> 0
- *     Dir.getwd           #=> "/tmp"
- *     Dir.pwd             #=> "/tmp"
- */
-static VALUE
-dir_s_getwd(VALUE dir)
-{
-    return rb_dir_getwd();
+    return str_taint(str_new2(path));
 }
 
 static VALUE
-check_dirname(VALUE dir)
+dir_s_chroot(dir, path)
+    VALUE dir, path;
 {
-    VALUE d = dir;
-    char *path, *pend;
-    long len;
-    rb_encoding *enc;
-
-    FilePathValue(d);
-    enc = rb_enc_get(d);
-    RSTRING_GETMEM(d, path, len);
-    pend = path + len;
-    pend = rb_enc_path_end(rb_enc_path_skip_prefix(path, pend, enc), pend, enc);
-    if (pend - path < len) {
-	d = rb_str_subseq(d, 0, pend - path);
-	StringValueCStr(d);
-    }
-    return rb_str_encode_ospath(d);
-}
+#if !defined(DJGPP) && !defined(NT) && !defined(__human68k__)
+    rb_secure(2);
+    Check_SafeStr(path);
 
-#if defined(HAVE_CHROOT)
-/*
- *  call-seq:
- *     Dir.chroot( string ) -> 0
- *
- *  Changes this process's idea of the file system root. Only a
- *  privileged process may make this call. Not available on all
- *  platforms. On Unix systems, see <code>chroot(2)</code> for more
- *  information.
- */
-static VALUE
-dir_s_chroot(VALUE dir, VALUE path)
-{
-    path = check_dirname(path);
-    if (chroot(RSTRING_PTR(path)) == -1)
-	rb_sys_fail_path(path);
+    if (chroot(RSTRING(path)->ptr) == -1)
+	rb_sys_fail(RSTRING(path)->ptr);
 
     return INT2FIX(0);
-}
 #else
-#define dir_s_chroot rb_f_notimplement
+    rb_notimplement();
 #endif
-
-struct mkdir_arg {
-    const char *path;
-    mode_t mode;
-};
-
-static void *
-nogvl_mkdir(void *ptr)
-{
-    struct mkdir_arg *m = ptr;
-
-    return (void *)(VALUE)mkdir(m->path, m->mode);
 }
 
-/*
- *  call-seq:
- *     Dir.mkdir( string [, integer] ) -> 0
- *
- *  Makes a new directory named by <i>string</i>, with permissions
- *  specified by the optional parameter <i>anInteger</i>. The
- *  permissions may be modified by the value of File::umask, and are
- *  ignored on NT. Raises a SystemCallError if the directory cannot be
- *  created. See also the discussion of permissions in the class
- *  documentation for File.
- *
- *    Dir.mkdir(File.join(Dir.home, ".foo"), 0700) #=> 0
- *
- */
 static VALUE
-dir_s_mkdir(int argc, VALUE *argv, VALUE obj)
+dir_s_mkdir(argc, argv, obj)
+    int argc;
+    VALUE *argv;
+    VALUE obj;
 {
-    struct mkdir_arg m;
     VALUE path, vmode;
-    int r;
+    int mode;
 
+    rb_secure(2);
     if (rb_scan_args(argc, argv, "11", &path, &vmode) == 2) {
-	m.mode = NUM2MODET(vmode);
+	mode = NUM2INT(vmode);
     }
     else {
-	m.mode = 0777;
-    }
-
-    path = check_dirname(path);
-    m.path = RSTRING_PTR(path);
-    r = (int)(VALUE)rb_thread_call_without_gvl(nogvl_mkdir, &m, RUBY_UBF_IO, 0);
-    if (r < 0)
-	rb_sys_fail_path(path);
-
-    return INT2FIX(0);
-}
-
-static void *
-nogvl_rmdir(void *ptr)
-{
-    const char *path = ptr;
-
-    return (void *)(VALUE)rmdir(path);
-}
-
-/*
- *  call-seq:
- *     Dir.delete( string ) -> 0
- *     Dir.rmdir( string ) -> 0
- *     Dir.unlink( string ) -> 0
- *
- *  Deletes the named directory. Raises a subclass of SystemCallError
- *  if the directory isn't empty.
- */
-static VALUE
-dir_s_rmdir(VALUE obj, VALUE dir)
-{
-    const char *p;
-    int r;
-
-    dir = check_dirname(dir);
-    p = RSTRING_PTR(dir);
-    r = (int)(VALUE)rb_thread_call_without_gvl(nogvl_rmdir, (void *)p, RUBY_UBF_IO, 0);
-    if (r < 0)
-	rb_sys_fail_path(dir);
-
-    return INT2FIX(0);
-}
-
-struct warning_args {
-#ifdef RUBY_FUNCTION_NAME_STRING
-    const char *func;
-#endif
-    const char *mesg;
-    rb_encoding *enc;
-};
-
-#ifndef RUBY_FUNCTION_NAME_STRING
-#define sys_enc_warning_in(func, mesg, enc) sys_enc_warning(mesg, enc)
-#endif
-
-static VALUE
-sys_warning_1(VALUE mesg)
-{
-    const struct warning_args *arg = (struct warning_args *)mesg;
-#ifdef RUBY_FUNCTION_NAME_STRING
-    rb_sys_enc_warning(arg->enc, "%s: %s", arg->func, arg->mesg);
-#else
-    rb_sys_enc_warning(arg->enc, "%s", arg->mesg);
-#endif
-    return Qnil;
-}
-
-static void
-sys_enc_warning_in(const char *func, const char *mesg, rb_encoding *enc)
-{
-    struct warning_args arg;
-#ifdef RUBY_FUNCTION_NAME_STRING
-    arg.func = func;
-#endif
-    arg.mesg = mesg;
-    arg.enc = enc;
-    rb_protect(sys_warning_1, (VALUE)&arg, 0);
-}
-
-#define GLOB_VERBOSE	(1U << (sizeof(int) * CHAR_BIT - 1))
-#define sys_warning(val, enc) \
-    ((flags & GLOB_VERBOSE) ? sys_enc_warning_in(RUBY_FUNCTION_NAME_STRING, (val), (enc)) :(void)0)
-
-static inline size_t
-glob_alloc_size(size_t x, size_t y)
-{
-    size_t z;
-    if (rb_mul_size_overflow(x, y, SSIZE_MAX, &z)) {
-        rb_memerror();          /* or...? */
-    }
-    else {
-        return z;
-    }
-}
-
-static inline void *
-glob_alloc_n(size_t x, size_t y)
-{
-    return malloc(glob_alloc_size(x, y));
-}
-
-static inline void *
-glob_realloc_n(void *p, size_t x, size_t y)
-{
-    return realloc(p, glob_alloc_size(x, y));
-}
-
-#define GLOB_ALLOC(type) ((type *)malloc(sizeof(type)))
-#define GLOB_ALLOC_N(type, n) ((type *)glob_alloc_n(sizeof(type), n))
-#define GLOB_REALLOC(ptr, size) realloc((ptr), (size))
-#define GLOB_REALLOC_N(ptr, n) glob_realloc_n(ptr, sizeof(*(ptr)), n)
-#define GLOB_FREE(ptr) free(ptr)
-#define GLOB_JUMP_TAG(status) (((status) == -1) ? rb_memerror() : rb_jump_tag(status))
-
-/*
- * ENOTDIR can be returned by stat(2) if a non-leaf element of the path
- * is not a directory.
- */
-ALWAYS_INLINE(static int to_be_ignored(int e));
-static inline int
-to_be_ignored(int e)
-{
-    return e == ENOENT || e == ENOTDIR;
-}
-
-#ifdef _WIN32
-#define STAT(p, s)	rb_w32_ustati128((p), (s))
-#undef lstat
-#define lstat(p, s)	rb_w32_ulstati128((p), (s))
-#else
-#define STAT(p, s)	stat((p), (s))
-#endif
-
-typedef int ruby_glob_errfunc(const char*, VALUE, const void*, int);
-typedef struct {
-    ruby_glob_func *match;
-    ruby_glob_errfunc *error;
-} ruby_glob_funcs_t;
-
-static const char *
-at_subpath(int fd, size_t baselen, const char *path)
-{
-#if USE_OPENDIR_AT
-    if (fd != (int)AT_FDCWD && baselen > 0) {
-	path += baselen;
-	if (*path == '/') ++path;
+	mode = 0777;
     }
-#endif
-    return *path ? path : ".";
-}
 
-/* System call with warning */
-static int
-do_stat(int fd, size_t baselen, const char *path, struct stat *pst, int flags, rb_encoding *enc)
-{
-#if USE_OPENDIR_AT
-    int ret = fstatat(fd, at_subpath(fd, baselen, path), pst, 0);
+    Check_SafeStr(path);
+#ifndef NT
+    if (mkdir(RSTRING(path)->ptr, mode) == -1)
+	rb_sys_fail(RSTRING(path)->ptr);
 #else
-    int ret = STAT(path, pst);
-#endif
-    if (ret < 0 && !to_be_ignored(errno))
-	sys_warning(path, enc);
-
-    return ret;
-}
-
-#if defined HAVE_LSTAT || defined lstat || USE_OPENDIR_AT
-static int
-do_lstat(int fd, size_t baselen, const char *path, struct stat *pst, int flags, rb_encoding *enc)
-{
-#if USE_OPENDIR_AT
-    int ret = fstatat(fd, at_subpath(fd, baselen, path), pst, AT_SYMLINK_NOFOLLOW);
-#else
-    int ret = lstat(path, pst);
-#endif
-    if (ret < 0 && !to_be_ignored(errno))
-	sys_warning(path, enc);
-
-    return ret;
-}
-#else
-#define do_lstat do_stat
-#endif
-
-struct opendir_at_arg {
-    int basefd;
-    const char *path;
-};
-
-static void *
-with_gvl_gc_for_fd(void *ptr)
-{
-    int *e = ptr;
-
-    return (void *)(rb_gc_for_fd(*e) ? Qtrue : Qfalse);
-}
-
-static int
-gc_for_fd_with_gvl(int e)
-{
-    if (vm_initialized)
-	return (int)(VALUE)rb_thread_call_with_gvl(with_gvl_gc_for_fd, &e);
-    else
-	return rb_gc_for_fd(e) ? Qtrue : Qfalse;
-}
-
-static void *
-nogvl_opendir_at(void *ptr)
-{
-    const struct opendir_at_arg *oaa = ptr;
-    DIR *dirp;
-
-#if USE_OPENDIR_AT
-    const int opendir_flags = (O_RDONLY|O_CLOEXEC|
-#  ifdef O_DIRECTORY
-			       O_DIRECTORY|
-#  endif /* O_DIRECTORY */
-			       0);
-    int fd = openat(oaa->basefd, oaa->path, opendir_flags);
-
-    dirp = fd >= 0 ? fdopendir(fd) : 0;
-    if (!dirp) {
-	int e = errno;
-
-	switch (gc_for_fd_with_gvl(e)) {
-	  default:
-	    if (fd < 0) fd = openat(oaa->basefd, oaa->path, opendir_flags);
-	    if (fd >= 0) dirp = fdopendir(fd);
-	    if (dirp) return dirp;
-
-	    e = errno;
-	    /* fallthrough*/
-	  case 0:
-	    if (fd >= 0) close(fd);
-	    errno = e;
-	}
-    }
-#else  /* !USE_OPENDIR_AT */
-    dirp = opendir(oaa->path);
-    if (!dirp && gc_for_fd_with_gvl(errno))
-	dirp = opendir(oaa->path);
-#endif /* !USE_OPENDIR_AT */
-
-    return dirp;
-}
-
-static DIR *
-opendir_at(int basefd, const char *path)
-{
-    struct opendir_at_arg oaa;
-
-    oaa.basefd = basefd;
-    oaa.path = path;
-
-    if (vm_initialized)
-	return rb_thread_call_without_gvl(nogvl_opendir_at, &oaa, RUBY_UBF_IO, 0);
-    else
-	return nogvl_opendir_at(&oaa);
-}
-
-static DIR *
-do_opendir(const int basefd, size_t baselen, const char *path, int flags, rb_encoding *enc,
-	   ruby_glob_errfunc *errfunc, VALUE arg, int *status)
-{
-    DIR *dirp;
-#ifdef _WIN32
-    VALUE tmp = 0;
-    if (!fundamental_encoding_p(enc)) {
-	tmp = rb_enc_str_new(path, strlen(path), enc);
-	tmp = rb_str_encode_ospath(tmp);
-	path = RSTRING_PTR(tmp);
-    }
-#endif
-    dirp = opendir_at(basefd, at_subpath(basefd, baselen, path));
-    if (!dirp) {
-	int e = errno;
-
-	*status = 0;
-	if (!to_be_ignored(e)) {
-	    if (errfunc) {
-		*status = (*errfunc)(path, arg, enc, e);
-	    }
-	    else {
-		sys_warning(path, enc);
-	    }
-	}
-    }
-#ifdef _WIN32
-    if (tmp) rb_str_resize(tmp, 0); /* GC guard */
-#endif
-
-    return dirp;
-}
-
-/* Globing pattern */
-enum glob_pattern_type { PLAIN, ALPHA, BRACE, MAGICAL, RECURSIVE, MATCH_ALL, MATCH_DIR };
-
-/* Return nonzero if S has any special globbing chars in it.  */
-static enum glob_pattern_type
-has_magic(const char *p, const char *pend, int flags, rb_encoding *enc)
-{
-    const int escape = !(flags & FNM_NOESCAPE);
-    int hasalpha = 0;
-    int hasmagical = 0;
-
-    register char c;
-
-    while (p < pend && (c = *p++) != 0) {
-	switch (c) {
-	  case '{':
-	    return BRACE;
-
-	  case '*':
-	  case '?':
-	  case '[':
-	    hasmagical = 1;
-	    break;
-
-	  case '\\':
-	    if (escape && p++ >= pend)
-		continue;
-	    break;
-
-#ifdef _WIN32
-	  case '.':
-	    break;
-
-	  case '~':
-	    hasalpha = 1;
-	    break;
-#endif
-	  default:
-	    if (IS_WIN32 || ISALPHA(c)) {
-		hasalpha = 1;
-	    }
-	    break;
-	}
-
-	p = Next(p-1, pend, enc);
-    }
-
-    return hasmagical ? MAGICAL : hasalpha ? ALPHA : PLAIN;
-}
-
-/* Find separator in globbing pattern. */
-static char *
-find_dirsep(const char *p, const char *pend, int flags, rb_encoding *enc)
-{
-    const int escape = !(flags & FNM_NOESCAPE);
-
-    register char c;
-    int open = 0;
-
-    while ((c = *p++) != 0) {
-	switch (c) {
-	  case '[':
-	    open = 1;
-	    continue;
-	  case ']':
-	    open = 0;
-	    continue;
-
-	  case '{':
-	    open = 1;
-	    continue;
-	  case '}':
-	    open = 0;
-	    continue;
-
-	  case '/':
-	    if (!open)
-		return (char *)p-1;
-	    continue;
-
-	  case '\\':
-	    if (escape && !(c = *p++))
-		return (char *)p-1;
-	    continue;
-	}
-
-	p = Next(p-1, pend, enc);
-    }
-
-    return (char *)p-1;
-}
-
-/* Remove escaping backslashes */
-static char *
-remove_backslashes(char *p, register const char *pend, rb_encoding *enc)
-{
-    char *t = p;
-    char *s = p;
-
-    while (*p) {
-	if (*p == '\\') {
-	    if (t != s)
-		memmove(t, s, p - s);
-	    t += p - s;
-	    s = ++p;
-	    if (!*p) break;
-	}
-	Inc(p, pend, enc);
-    }
-
-    while (*p++);
-
-    if (t != s)
-	memmove(t, s, p - s); /* move '\0' too */
-
-    return p;
-}
-
-struct glob_pattern {
-    char *str;
-    enum glob_pattern_type type;
-    struct glob_pattern *next;
-};
-
-static void glob_free_pattern(struct glob_pattern *list);
-
-static struct glob_pattern *
-glob_make_pattern(const char *p, const char *e, int flags, rb_encoding *enc)
-{
-    struct glob_pattern *list, *tmp, **tail = &list;
-    int dirsep = 0; /* pattern is terminated with '/' */
-    int recursive = 0;
-
-    while (p < e && *p) {
-	tmp = GLOB_ALLOC(struct glob_pattern);
-	if (!tmp) goto error;
-	if (p + 2 < e && p[0] == '*' && p[1] == '*' && p[2] == '/') {
-	    /* fold continuous RECURSIVEs (needed in glob_helper) */
-	    do { p += 3; while (*p == '/') p++; } while (p[0] == '*' && p[1] == '*' && p[2] == '/');
-	    tmp->type = RECURSIVE;
-	    tmp->str = 0;
-	    dirsep = 1;
-	    recursive = 1;
-	}
-	else {
-	    const char *m = find_dirsep(p, e, flags, enc);
-	    const enum glob_pattern_type magic = has_magic(p, m, flags, enc);
-	    const enum glob_pattern_type non_magic = (USE_NAME_ON_FS || FNM_SYSCASE) ? PLAIN : ALPHA;
-	    char *buf;
-
-	    if (!(FNM_SYSCASE || magic > non_magic) && !recursive && *m) {
-		const char *m2;
-		while (has_magic(m+1, m2 = find_dirsep(m+1, e, flags, enc), flags, enc) <= non_magic &&
-		       *m2) {
-		    m = m2;
-		}
-	    }
-	    buf = GLOB_ALLOC_N(char, m-p+1);
-	    if (!buf) {
-		GLOB_FREE(tmp);
-		goto error;
-	    }
-	    memcpy(buf, p, m-p);
-	    buf[m-p] = '\0';
-	    tmp->type = magic > MAGICAL ? MAGICAL : magic > non_magic ? magic : PLAIN;
-	    tmp->str = buf;
-	    if (*m) {
-		dirsep = 1;
-		p = m + 1;
-	    }
-	    else {
-		dirsep = 0;
-		p = m;
-	    }
-	}
-	*tail = tmp;
-	tail = &tmp->next;
-    }
-
-    tmp = GLOB_ALLOC(struct glob_pattern);
-    if (!tmp) {
-        goto error;
-    }
-    tmp->type = dirsep ? MATCH_DIR : MATCH_ALL;
-    tmp->str = 0;
-    *tail = tmp;
-    tmp->next = 0;
-
-    return list;
-
-  error:
-    *tail = 0;
-    glob_free_pattern(list);
-    return 0;
-}
-
-static void
-glob_free_pattern(struct glob_pattern *list)
-{
-    while (list) {
-	struct glob_pattern *tmp = list;
-	list = list->next;
-	if (tmp->str)
-	    GLOB_FREE(tmp->str);
-	GLOB_FREE(tmp);
-    }
-}
-
-static char *
-join_path(const char *path, size_t len, int dirsep, const char *name, size_t namlen)
-{
-    char *buf = GLOB_ALLOC_N(char, len+namlen+(dirsep?1:0)+1);
-
-    if (!buf) return 0;
-    memcpy(buf, path, len);
-    if (dirsep) {
-	buf[len++] = '/';
-    }
-    memcpy(buf+len, name, namlen);
-    buf[len+namlen] = '\0';
-    return buf;
-}
-
-#ifdef HAVE_GETATTRLIST
-# if defined HAVE_FGETATTRLIST
-#   define is_case_sensitive(dirp, path) is_case_sensitive(dirp)
-# else
-#   define is_case_sensitive(dirp, path) is_case_sensitive(path)
-# endif
-static int
-is_case_sensitive(DIR *dirp, const char *path)
-{
-    struct {
-	u_int32_t length;
-	vol_capabilities_attr_t cap[1];
-    } __attribute__((aligned(4), packed)) attrbuf[1];
-    struct attrlist al = {ATTR_BIT_MAP_COUNT, 0, 0, ATTR_VOL_INFO|ATTR_VOL_CAPABILITIES};
-    const vol_capabilities_attr_t *const cap = attrbuf[0].cap;
-    const int idx = VOL_CAPABILITIES_FORMAT;
-    const uint32_t mask = VOL_CAP_FMT_CASE_SENSITIVE;
-
-#   if defined HAVE_FGETATTRLIST
-    if (fgetattrlist(dirfd(dirp), &al, attrbuf, sizeof(attrbuf), FSOPT_NOFOLLOW))
-	return -1;
-#   else
-    if (getattrlist(path, &al, attrbuf, sizeof(attrbuf), FSOPT_NOFOLLOW))
-	return -1;
-#   endif
-    if (!(cap->valid[idx] & mask))
-	return -1;
-    return (cap->capabilities[idx] & mask) != 0;
-}
-
-static char *
-replace_real_basename(char *path, long base, rb_encoding *enc, int norm_p, int flags, rb_pathtype_t *type)
-{
-    struct {
-	u_int32_t length;
-	attrreference_t ref[1];
-	fsobj_type_t objtype;
-	char path[MAXPATHLEN * 3];
-    } __attribute__((aligned(4), packed)) attrbuf[1];
-    struct attrlist al = {ATTR_BIT_MAP_COUNT, 0, ATTR_CMN_NAME|ATTR_CMN_OBJTYPE};
-    const attrreference_t *const ar = attrbuf[0].ref;
-    const char *name;
-    long len;
-    char *tmp;
-    IF_NORMALIZE_UTF8PATH(VALUE utf8str = Qnil);
-
-    *type = path_noent;
-    if (getattrlist(path, &al, attrbuf, sizeof(attrbuf), FSOPT_NOFOLLOW)) {
-	if (!to_be_ignored(errno))
-	    sys_warning(path, enc);
-	return path;
-    }
-
-    switch (attrbuf[0].objtype) {
-      case VREG: *type = path_regular; break;
-      case VDIR: *type = path_directory; break;
-      case VLNK: *type = path_symlink; break;
-      default: *type = path_exist; break;
-    }
-    name = (char *)ar + ar->attr_dataoffset;
-    len = (long)ar->attr_length - 1;
-    if (name + len > (char *)attrbuf + sizeof(attrbuf))
-	return path;
-
-# if NORMALIZE_UTF8PATH
-    if (norm_p && has_nonascii(name, len)) {
-	if (!NIL_P(utf8str = rb_str_normalize_ospath(name, len))) {
-	    RSTRING_GETMEM(utf8str, name, len);
-	}
-    }
-# endif
-
-    tmp = GLOB_REALLOC(path, base + len + 1);
-    if (tmp) {
-	path = tmp;
-	memcpy(path + base, name, len);
-	path[base + len] = '\0';
-    }
-    IF_NORMALIZE_UTF8PATH(if (!NIL_P(utf8str)) rb_str_resize(utf8str, 0));
-    return path;
-}
-#elif defined _WIN32
-VALUE rb_w32_conv_from_wchar(const WCHAR *wstr, rb_encoding *enc);
-int rb_w32_reparse_symlink_p(const WCHAR *path);
-
-static char *
-replace_real_basename(char *path, long base, rb_encoding *enc, int norm_p, int flags, rb_pathtype_t *type)
-{
-    char *plainname = path;
-    volatile VALUE tmp = 0;
-    WIN32_FIND_DATAW fd;
-    WIN32_FILE_ATTRIBUTE_DATA fa;
-    WCHAR *wplain;
-    HANDLE h = INVALID_HANDLE_VALUE;
-    long wlen;
-    int e = 0;
-    if (!fundamental_encoding_p(enc)) {
-	tmp = rb_enc_str_new_cstr(plainname, enc);
-	tmp = rb_str_encode_ospath(tmp);
-	plainname = RSTRING_PTR(tmp);
-    }
-    wplain = rb_w32_mbstr_to_wstr(CP_UTF8, plainname, -1, &wlen);
-    if (tmp) rb_str_resize(tmp, 0);
-    if (!wplain) return path;
-    if (GetFileAttributesExW(wplain, GetFileExInfoStandard, &fa)) {
-	h = FindFirstFileW(wplain, &fd);
-	e = rb_w32_map_errno(GetLastError());
-    }
-    if (fa.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
-	if (!rb_w32_reparse_symlink_p(wplain))
-	    fa.dwFileAttributes &= ~FILE_ATTRIBUTE_REPARSE_POINT;
-    }
-    free(wplain);
-    if (h == INVALID_HANDLE_VALUE) {
-	*type = path_noent;
-	if (e && !to_be_ignored(e)) {
-	    errno = e;
-	    sys_warning(path, enc);
-	}
-	return path;
-    }
-    FindClose(h);
-    *type =
-	(fa.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) ? path_symlink :
-	(fa.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? path_directory :
-	path_regular;
-    if (tmp) {
-	char *buf;
-	tmp = rb_w32_conv_from_wchar(fd.cFileName, enc);
-	wlen = RSTRING_LEN(tmp);
-	buf = GLOB_REALLOC(path, base + wlen + 1);
-	if (buf) {
-	    path = buf;
-	    memcpy(path + base, RSTRING_PTR(tmp), wlen);
-	    path[base + wlen] = 0;
-	}
-	rb_str_resize(tmp, 0);
-    }
-    else {
-	char *utf8filename;
-	wlen = WideCharToMultiByte(CP_UTF8, 0, fd.cFileName, -1, NULL, 0, NULL, NULL);
-	utf8filename = GLOB_REALLOC(0, wlen);
-	if (utf8filename) {
-	    char *buf;
-	    WideCharToMultiByte(CP_UTF8, 0, fd.cFileName, -1, utf8filename, wlen, NULL, NULL);
-	    buf = GLOB_REALLOC(path, base + wlen + 1);
-	    if (buf) {
-		path = buf;
-		memcpy(path + base, utf8filename, wlen);
-		path[base + wlen] = 0;
-	    }
-	    GLOB_FREE(utf8filename);
-	}
-    }
-    return path;
-}
-#elif USE_NAME_ON_FS == USE_NAME_ON_FS_REAL_BASENAME
-# error not implemented
+    if (mkdir(RSTRING(path)->ptr) == -1)
+	rb_sys_fail(RSTRING(path)->ptr);
 #endif
 
-#ifndef S_ISDIR
-#   define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
-#endif
-
-#ifndef S_ISLNK
-#  ifndef S_IFLNK
-#    define S_ISLNK(m) (0)
-#  else
-#    define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
-#  endif
-#endif
-
-struct glob_args {
-    void (*func)(const char *, VALUE, void *);
-    const char *path;
-    const char *base;
-    size_t baselen;
-    VALUE value;
-    rb_encoding *enc;
-};
-
-#define glob_call_func(func, path, arg, enc) (*(func))((path), (arg), (void *)(enc))
-
-static VALUE
-glob_func_caller(VALUE val)
-{
-    struct glob_args *args = (struct glob_args *)val;
-
-    glob_call_func(args->func, args->path, args->value, args->enc);
-    return Qnil;
+    return INT2FIX(0);
 }
 
-struct glob_error_args {
-    const char *path;
-    rb_encoding *enc;
-    int error;
-};
-
 static VALUE
-glob_func_warning(VALUE val)
+dir_s_rmdir(obj, dir)
+    VALUE obj, dir;
 {
-    struct glob_error_args *arg = (struct glob_error_args *)val;
-    rb_syserr_enc_warning(arg->error, arg->enc, "%s", arg->path);
-    return Qnil;
-}
-
-#if 0
-static int
-rb_glob_warning(const char *path, VALUE a, const void *enc, int error)
-{
-    int status;
-    struct glob_error_args args;
-
-    args.path = path;
-    args.enc = enc;
-    args.error = error;
-    rb_protect(glob_func_warning, (VALUE)&args, &status);
-    return status;
-}
-#endif
-
-NORETURN(static VALUE glob_func_error(VALUE val));
+    rb_secure(2);
+    Check_SafeStr(dir);
+    if (rmdir(RSTRING(dir)->ptr) < 0)
+	rb_sys_fail(RSTRING(dir)->ptr);
 
-static VALUE
-glob_func_error(VALUE val)
-{
-    struct glob_error_args *arg = (struct glob_error_args *)val;
-    VALUE path = rb_enc_str_new_cstr(arg->path, arg->enc);
-    rb_syserr_fail_str(arg->error, path);
-    UNREACHABLE_RETURN(Qnil);
+    return TRUE;
 }
 
-static int
-rb_glob_error(const char *path, VALUE a, const void *enc, int error)
-{
-    int status;
-    struct glob_error_args args;
-    VALUE (*errfunc)(VALUE) = glob_func_error;
-
-    if (error == EACCES) {
-	errfunc = glob_func_warning;
-    }
-    args.path = path;
-    args.enc = enc;
-    args.error = error;
-    rb_protect(errfunc, (VALUE)&args, &status);
-    return status;
-}
-
-typedef struct rb_dirent {
-    long d_namlen;
-    const char *d_name;
-#ifdef _WIN32
-    const char *d_altname;
-#endif
-    uint8_t d_type;
-} rb_dirent_t;
-
-static inline int
-dirent_match(const char *pat, rb_encoding *enc, const char *name, const rb_dirent_t *dp, int flags)
-{
-    if (fnmatch(pat, enc, name, flags) == 0) return 1;
-#ifdef _WIN32
-    if (dp->d_altname && (flags & FNM_SHORTNAME)) {
-	if (fnmatch(pat, enc, dp->d_altname, flags) == 0) return 1;
-    }
-#endif
-    return 0;
-}
-
-struct push_glob_args {
-    int fd;
-    const char *path;
-    size_t baselen;
-    size_t namelen;
-    int dirsep; /* '/' should be placed before appending child entry's name to 'path'. */
-    rb_pathtype_t pathtype; /* type of 'path' */
-    int flags;
-    const ruby_glob_funcs_t *funcs;
-    VALUE arg;
-};
-
-struct dirent_brace_args {
-    const char *name;
-    const rb_dirent_t *dp;
-    int flags;
-};
-
-static int
-dirent_match_brace(const char *pattern, VALUE val, void *enc)
-{
-    struct dirent_brace_args *arg = (struct dirent_brace_args *)val;
-
-    return dirent_match(pattern, enc, arg->name, arg->dp, arg->flags);
-}
-
-/* join paths from pattern list of glob_make_pattern() */
-static char*
-join_path_from_pattern(struct glob_pattern **beg)
-{
-    struct glob_pattern *p;
-    char *path = NULL;
-    size_t path_len = 0;
-
-    for (p = *beg; p; p = p->next) {
-	const char *str;
-	switch (p->type) {
-	  case RECURSIVE:
-	    str = "**";
-	    break;
-	  case MATCH_DIR:
-	    /* append last slash */
-	    str = "";
-	    break;
-	  default:
-	    str = p->str;
-	    if (!str) continue;
-	}
-	if (!path) {
-	    path_len = strlen(str);
-	    path = GLOB_ALLOC_N(char, path_len + 1);
-            if (path) {
-                memcpy(path, str, path_len);
-                path[path_len] = '\0';
-            }
-        }
-        else {
-	    size_t len = strlen(str);
-	    char *tmp;
-	    tmp = GLOB_REALLOC(path, path_len + len + 2);
-	    if (tmp) {
-		path = tmp;
-		path[path_len++] = '/';
-		memcpy(path + path_len, str, len);
-		path_len += len;
-		path[path_len] = '\0';
-	    }
-	}
-    }
-    return path;
-}
-
-static int push_caller(const char *path, VALUE val, void *enc);
-
-static int ruby_brace_expand(const char *str, int flags, ruby_glob_func *func, VALUE arg,
-			     rb_encoding *enc, VALUE var);
-
-static const size_t rb_dirent_name_offset =
-    offsetof(rb_dirent_t, d_type) + sizeof(uint8_t);
-
-static rb_dirent_t *
-dirent_copy(const struct dirent *dp, rb_dirent_t *rdp)
-{
-    if (!dp) return NULL;
-    size_t namlen = NAMLEN(dp);
-    const size_t altlen =
-#ifdef _WIN32
-        dp->d_altlen ? dp->d_altlen + 1 :
-#endif
-        0;
-    rb_dirent_t *newrdp = rdp;
-    if (!rdp && !(newrdp = malloc(rb_dirent_name_offset + namlen + 1 + altlen)))
-        return NULL;
-    newrdp->d_namlen = namlen;
-    if (!rdp) {
-        char *name = (char *)newrdp + rb_dirent_name_offset;
-        memcpy(name, dp->d_name, namlen);
-        name[namlen] = '\0';
-#ifdef _WIN32
-        newrdp->d_altname = NULL;
-        if (altlen) {
-            char *const altname = name + namlen + 1;
-            memcpy(altname, dp->d_altname, altlen - 1);
-            altname[altlen - 1] = '\0';
-            newrdp->d_altname = altname;
-        }
-#endif
-        newrdp->d_name = name;
-    }
-    else {
-        newrdp->d_name = dp->d_name;
-#ifdef _WIN32
-        newrdp->d_altname = dp->d_altname;
-#endif
-    }
-#ifdef DT_UNKNOWN
-    newrdp->d_type = dp->d_type;
-#else
-    newrdp->d_type = 0;
-#endif
-    return newrdp;
-}
+#define isdelim(c) ((c)==' '||(c)=='\t'||(c)=='\n'||(c)=='\0')
 
-typedef union {
-    struct {
-        DIR *dirp;
-        rb_dirent_t ent;
-    } nosort;
-    struct {
-        size_t count, idx;
-        rb_dirent_t **entries;
-    } sort;
-} ruby_glob_entries_t;
-
-static int
-glob_sort_cmp(const void *a, const void *b, void *e)
-{
-    const rb_dirent_t *ent1 = *(void **)a;
-    const rb_dirent_t *ent2 = *(void **)b;
-    return strcmp(ent1->d_name, ent2->d_name);
-}
+char **glob_filename();
+extern char *glob_error_return;
 
 static void
-glob_dir_finish(ruby_glob_entries_t *ent, int flags)
-{
-    if (flags & FNM_GLOB_NOSORT) {
-        closedir(ent->nosort.dirp);
-        ent->nosort.dirp = NULL;
-    }
-    else if (ent->sort.entries) {
-        for (size_t i = 0, count = ent->sort.count; i < count;) {
-            GLOB_FREE(ent->sort.entries[i++]);
-        }
-        GLOB_FREE(ent->sort.entries);
-        ent->sort.entries = NULL;
-        ent->sort.count = ent->sort.idx = 0;
-    }
-}
-
-static ruby_glob_entries_t *
-glob_opendir(ruby_glob_entries_t *ent, DIR *dirp, int flags, rb_encoding *enc)
-{
-    MEMZERO(ent, ruby_glob_entries_t, 1);
-    if (flags & FNM_GLOB_NOSORT) {
-        ent->nosort.dirp = dirp;
-        return ent;
-    }
-    else {
-        void *newp;
-        struct dirent *dp;
-        size_t count = 0, capacity = 0;
-        ent->sort.count = 0;
-        ent->sort.idx = 0;
-        ent->sort.entries = 0;
-#ifdef _WIN32
-        if ((capacity = dirp->nfiles) > 0) {
-            if (!(newp = GLOB_ALLOC_N(rb_dirent_t, capacity))) {
-                closedir(dirp);
-                return NULL;
-            }
-            ent->sort.entries = newp;
-        }
-#endif
-	while ((dp = READDIR(dirp, enc)) != NULL) {
-            rb_dirent_t *rdp = dirent_copy(dp, NULL);
-            if (!rdp) {
-                goto nomem;
-            }
-            if (count >= capacity) {
-                capacity += 256;
-                if (!(newp = GLOB_REALLOC_N(ent->sort.entries, capacity)))
-                    goto nomem;
-                ent->sort.entries = newp;
-            }
-            ent->sort.entries[count++] = rdp;
-            ent->sort.count = count;
-        }
-        closedir(dirp);
-        if (count < capacity) {
-            if (!(newp = GLOB_REALLOC_N(ent->sort.entries, count))) {
-                glob_dir_finish(ent, 0);
-                return NULL;
-            }
-            ent->sort.entries = newp;
-        }
-        ruby_qsort(ent->sort.entries, ent->sort.count, sizeof(ent->sort.entries[0]),
-                   glob_sort_cmp, NULL);
-        return ent;
-    }
-
-  nomem:
-    glob_dir_finish(ent, 0);
-    closedir(dirp);
-    return NULL;
-}
-
-static rb_dirent_t *
-glob_getent(ruby_glob_entries_t *ent, int flags, rb_encoding *enc)
-{
-    if (flags & FNM_GLOB_NOSORT) {
-        return dirent_copy(READDIR(ent->nosort.dirp, enc), &ent->nosort.ent);
-    }
-    else if (ent->sort.idx < ent->sort.count) {
-        return ent->sort.entries[ent->sort.idx++];
-    }
-    else {
-        return NULL;
-    }
-}
-
-static int
-glob_helper(
-    int fd,
-    const char *path,
-    size_t baselen,
-    size_t namelen,
-    int dirsep, /* '/' should be placed before appending child entry's name to 'path'. */
-    rb_pathtype_t pathtype, /* type of 'path' */
-    struct glob_pattern **beg,
-    struct glob_pattern **end,
-    int flags,
-    const ruby_glob_funcs_t *funcs,
-    VALUE arg,
-    rb_encoding *enc)
-{
-    struct stat st;
-    int status = 0;
-    struct glob_pattern **cur, **new_beg, **new_end;
-    int plain = 0, brace = 0, magical = 0, recursive = 0, match_all = 0, match_dir = 0;
-    int escape = !(flags & FNM_NOESCAPE);
-    size_t pathlen = baselen + namelen;
-
-    for (cur = beg; cur < end; ++cur) {
-	struct glob_pattern *p = *cur;
-	if (p->type == RECURSIVE) {
-	    recursive = 1;
-	    p = p->next;
-	}
-	switch (p->type) {
-	  case PLAIN:
-	    plain = 1;
-	    break;
-	  case ALPHA:
-#if USE_NAME_ON_FS == USE_NAME_ON_FS_REAL_BASENAME
-	    plain = 1;
-#else
-	    magical = 1;
-#endif
-	    break;
-	  case BRACE:
-	    if (!recursive) {
-		brace = 1;
-	    }
-	    break;
-	  case MAGICAL:
-	    magical = 2;
-	    break;
-	  case MATCH_ALL:
-	    match_all = 1;
-	    break;
-	  case MATCH_DIR:
-	    match_dir = 1;
-	    break;
-	  case RECURSIVE:
-	    rb_bug("continuous RECURSIVEs");
-	}
-    }
-
-    if (brace) {
-	struct push_glob_args args;
-	char* brace_path = join_path_from_pattern(beg);
-	if (!brace_path) return -1;
-	args.fd = fd;
-	args.path = path;
-	args.baselen = baselen;
-	args.namelen = namelen;
-	args.dirsep = dirsep;
-	args.pathtype = pathtype;
-	args.flags = flags;
-	args.funcs = funcs;
-	args.arg = arg;
-	status = ruby_brace_expand(brace_path, flags, push_caller, (VALUE)&args, enc, Qfalse);
-	GLOB_FREE(brace_path);
-	return status;
-    }
-
-    if (*path) {
-	if (match_all && pathtype == path_unknown) {
-	    if (do_lstat(fd, baselen, path, &st, flags, enc) == 0) {
-		pathtype = IFTODT(st.st_mode);
-	    }
-	    else {
-		pathtype = path_noent;
-	    }
-	}
-	if (match_dir && (pathtype == path_unknown || pathtype == path_symlink)) {
-	    if (do_stat(fd, baselen, path, &st, flags, enc) == 0) {
-		pathtype = IFTODT(st.st_mode);
-	    }
-	    else {
-		pathtype = path_noent;
-	    }
-	}
-	if (match_all && pathtype > path_noent) {
-	    const char *subpath = path + baselen + (baselen && path[baselen] == '/');
-	    status = glob_call_func(funcs->match, subpath, arg, enc);
-	    if (status) return status;
-	}
-	if (match_dir && pathtype == path_directory) {
-	    int seplen = (baselen && path[baselen] == '/');
-	    const char *subpath = path + baselen + seplen;
-	    char *tmp = join_path(subpath, namelen - seplen, dirsep, "", 0);
-	    if (!tmp) return -1;
-	    status = glob_call_func(funcs->match, tmp, arg, enc);
-	    GLOB_FREE(tmp);
-	    if (status) return status;
-	}
-    }
-
-    if (pathtype == path_noent) return 0;
-
-    if (magical || recursive) {
-	rb_dirent_t *dp;
-	DIR *dirp;
-# if USE_NAME_ON_FS == USE_NAME_ON_FS_BY_FNMATCH
-	char *plainname = 0;
-# endif
-	IF_NORMALIZE_UTF8PATH(int norm_p);
-# if USE_NAME_ON_FS == USE_NAME_ON_FS_BY_FNMATCH
-	if (cur + 1 == end && (*cur)->type <= ALPHA) {
-	    plainname = join_path(path, pathlen, dirsep, (*cur)->str, strlen((*cur)->str));
-	    if (!plainname) return -1;
-	    dirp = do_opendir(fd, basename, plainname, flags, enc, funcs->error, arg, &status);
-	    GLOB_FREE(plainname);
-	}
-	else
-# else
-	    ;
-# endif
-	dirp = do_opendir(fd, baselen, path, flags, enc, funcs->error, arg, &status);
-	if (dirp == NULL) {
-# if FNM_SYSCASE || NORMALIZE_UTF8PATH
-	    if ((magical < 2) && !recursive && (errno == EACCES)) {
-		/* no read permission, fallback */
-		goto literally;
-	    }
-# endif
-	    return status;
-	}
-	IF_NORMALIZE_UTF8PATH(norm_p = need_normalization(dirp, *path ? path : "."));
-
-# if NORMALIZE_UTF8PATH
-	if (!(norm_p || magical || recursive)) {
-	    closedir(dirp);
-	    goto literally;
-	}
-# endif
-# ifdef HAVE_GETATTRLIST
-	if (is_case_sensitive(dirp, path) == 0)
-	    flags |= FNM_CASEFOLD;
-# endif
-        ruby_glob_entries_t globent;
-        if (!glob_opendir(&globent, dirp, flags, enc)) {
-            status = 0;
-            if (funcs->error) {
-                status = (*funcs->error)(path, arg, enc, ENOMEM);
-            }
-            else {
-                sys_warning(path, enc);
-            }
-            return status;
-        }
-	while ((dp = glob_getent(&globent, flags, enc)) != NULL) {
-	    char *buf;
-	    rb_pathtype_t new_pathtype = path_unknown;
-	    const char *name;
-	    size_t namlen;
-	    int dotfile = 0;
-	    IF_NORMALIZE_UTF8PATH(VALUE utf8str = Qnil);
-
-	    name = dp->d_name;
-	    namlen = dp->d_namlen;
-	    if (recursive && name[0] == '.') {
-		++dotfile;
-		if (namlen == 1) {
-		    /* unless DOTMATCH, skip current directories not to recurse infinitely */
-		    if (!(flags & FNM_DOTMATCH)) continue;
-		    ++dotfile;
-		    new_pathtype = path_directory; /* force to skip stat/lstat */
-		}
-		else if (namlen == 2 && name[1] == '.') {
-		    /* always skip parent directories not to recurse infinitely */
-		    continue;
-		}
-	    }
-
-# if NORMALIZE_UTF8PATH
-	    if (norm_p && has_nonascii(name, namlen)) {
-		if (!NIL_P(utf8str = rb_str_normalize_ospath(name, namlen))) {
-		    RSTRING_GETMEM(utf8str, name, namlen);
-		}
-	    }
-# endif
-	    buf = join_path(path, pathlen, dirsep, name, namlen);
-	    IF_NORMALIZE_UTF8PATH(if (!NIL_P(utf8str)) rb_str_resize(utf8str, 0));
-	    if (!buf) {
-		status = -1;
-		break;
-	    }
-	    name = buf + pathlen + (dirsep != 0);
-#ifdef DT_UNKNOWN
-	    if (dp->d_type != DT_UNKNOWN) {
-		/* Got it. We need no more lstat. */
-		new_pathtype = dp->d_type;
-	    }
-#endif
-	    if (recursive && dotfile < ((flags & FNM_DOTMATCH) ? 2 : 1) &&
-		new_pathtype == path_unknown) {
-		/* RECURSIVE never match dot files unless FNM_DOTMATCH is set */
-		if (do_lstat(fd, baselen, buf, &st, flags, enc) == 0)
-		    new_pathtype = IFTODT(st.st_mode);
-		else
-		    new_pathtype = path_noent;
-	    }
-
-	    new_beg = new_end = GLOB_ALLOC_N(struct glob_pattern *, (end - beg) * 2);
-	    if (!new_beg) {
-		GLOB_FREE(buf);
-		status = -1;
-		break;
-	    }
-
-	    for (cur = beg; cur < end; ++cur) {
-		struct glob_pattern *p = *cur;
-		struct dirent_brace_args args;
-		if (p->type == RECURSIVE) {
-		    if (new_pathtype == path_directory || /* not symlink but real directory */
-			new_pathtype == path_exist) {
-			if (dotfile < ((flags & FNM_DOTMATCH) ? 2 : 1))
-			    *new_end++ = p; /* append recursive pattern */
-		    }
-		    p = p->next; /* 0 times recursion */
-		}
-		switch (p->type) {
-		  case BRACE:
-		    args.name = name;
-		    args.dp = dp;
-		    args.flags = flags;
-		    if (ruby_brace_expand(p->str, flags, dirent_match_brace,
-					  (VALUE)&args, enc, Qfalse) > 0)
-			*new_end++ = p->next;
-		    break;
-		  case ALPHA:
-# if USE_NAME_ON_FS == USE_NAME_ON_FS_BY_FNMATCH
-		    if (plainname) {
-			*new_end++ = p->next;
-			break;
-		    }
-# endif
-		  case PLAIN:
-		  case MAGICAL:
-		    if (dirent_match(p->str, enc, name, dp, flags))
-			*new_end++ = p->next;
-		  default:
-		    break;
-		}
-	    }
-
-	    status = glob_helper(fd, buf, baselen, name - buf - baselen + namlen, 1,
-				 new_pathtype, new_beg, new_end,
-				 flags, funcs, arg, enc);
-	    GLOB_FREE(buf);
-	    GLOB_FREE(new_beg);
-	    if (status) break;
-	}
-
-        glob_dir_finish(&globent, flags);
-    }
-    else if (plain) {
-	struct glob_pattern **copy_beg, **copy_end, **cur2;
-
-# if FNM_SYSCASE || NORMALIZE_UTF8PATH
-      literally:
-# endif
-	copy_beg = copy_end = GLOB_ALLOC_N(struct glob_pattern *, end - beg);
-	if (!copy_beg) return -1;
-	for (cur = beg; cur < end; ++cur)
-	    *copy_end++ = (*cur)->type <= ALPHA ? *cur : 0;
-
-	for (cur = copy_beg; cur < copy_end; ++cur) {
-	    if (*cur) {
-		rb_pathtype_t new_pathtype = path_unknown;
-		char *buf;
-		char *name;
-		size_t len = strlen((*cur)->str) + 1;
-		name = GLOB_ALLOC_N(char, len);
-		if (!name) {
-		    status = -1;
-		    break;
-		}
-		memcpy(name, (*cur)->str, len);
-		if (escape)
-		    len = remove_backslashes(name, name+len-1, enc) - name;
-
-		new_beg = new_end = GLOB_ALLOC_N(struct glob_pattern *, end - beg);
-		if (!new_beg) {
-		    GLOB_FREE(name);
-		    status = -1;
-		    break;
-		}
-		*new_end++ = (*cur)->next;
-		for (cur2 = cur + 1; cur2 < copy_end; ++cur2) {
-		    if (*cur2 && fnmatch((*cur2)->str, enc, name, flags) == 0) {
-			*new_end++ = (*cur2)->next;
-			*cur2 = 0;
-		    }
-		}
-
-		buf = join_path(path, pathlen, dirsep, name, len);
-		GLOB_FREE(name);
-		if (!buf) {
-		    GLOB_FREE(new_beg);
-		    status = -1;
-		    break;
-		}
-#if USE_NAME_ON_FS == USE_NAME_ON_FS_REAL_BASENAME
-		if ((*cur)->type == ALPHA) {
-		    buf = replace_real_basename(buf, pathlen + (dirsep != 0), enc,
-						IF_NORMALIZE_UTF8PATH(1)+0,
-						flags, &new_pathtype);
-		    if (!buf) break;
-		}
-#endif
-		status = glob_helper(fd, buf, baselen,
-				     namelen + strlen(buf + pathlen), 1,
-				     new_pathtype, new_beg, new_end,
-				     flags, funcs, arg, enc);
-		GLOB_FREE(buf);
-		GLOB_FREE(new_beg);
-		if (status) break;
-	    }
-	}
-
-	GLOB_FREE(copy_beg);
-    }
-
-    return status;
-}
-
-static int
-push_caller(const char *path, VALUE val, void *enc)
+push_globs(ary, s)
+    VALUE ary;
+    char *s;
 {
-    struct push_glob_args *arg = (struct push_glob_args *)val;
-    struct glob_pattern *list;
-    int status;
+    char **fnames, **ff;
 
-    list = glob_make_pattern(path, path + strlen(path), arg->flags, enc);
-    if (!list) {
-	return -1;
+    fnames = glob_filename(s);
+    if (fnames == (char**)-1) rb_sys_fail(s);
+    ff = fnames;
+    while (*ff) {
+	ary_push(ary, str_taint(str_new2(*ff)));
+	free(*ff);
+	ff++;
     }
-    status = glob_helper(arg->fd, arg->path, arg->baselen, arg->namelen, arg->dirsep,
-			 arg->pathtype, &list, &list + 1, arg->flags, arg->funcs,
-			 arg->arg, enc);
-    glob_free_pattern(list);
-    return status;
-}
-
-static int ruby_glob0(const char *path, int fd, const char *base, int flags,
-                      const ruby_glob_funcs_t *funcs, VALUE arg, rb_encoding *enc);
-
-struct push_glob0_args {
-    int fd;
-    const char *base;
-    int flags;
-    const ruby_glob_funcs_t *funcs;
-    VALUE arg;
-};
-
-static int
-push_glob0_caller(const char *path, VALUE val, void *enc)
-{
-    struct push_glob0_args *arg = (struct push_glob0_args *)val;
-    return ruby_glob0(path, arg->fd, arg->base, arg->flags, arg->funcs, arg->arg, enc);
-}
-
-static int
-ruby_glob0(const char *path, int fd, const char *base, int flags,
-	   const ruby_glob_funcs_t *funcs, VALUE arg,
-	   rb_encoding *enc)
-{
-    struct glob_pattern *list;
-    const char *root, *start;
-    char *buf;
-    size_t n, baselen = 0;
-    int status, dirsep = FALSE;
-
-    start = root = path;
-
-    if (*root == '{') {
-        struct push_glob0_args args;
-        args.fd = fd;
-        args.base = base;
-        args.flags = flags;
-        args.funcs = funcs;
-        args.arg = arg;
-        return ruby_brace_expand(path, flags, push_glob0_caller, (VALUE)&args, enc, Qfalse);
+    if (fnames != &glob_error_return) {
+        free(fnames);
     }
-
-    flags |= FNM_SYSCASE;
-#if defined DOSISH
-    root = rb_enc_path_skip_prefix(root, root + strlen(root), enc);
-#endif
-
-    if (*root == '/') root++;
-
-    n = root - start;
-    if (!n && base) {
-	n = strlen(base);
-	baselen = n;
-	start = base;
-	dirsep = TRUE;
-    }
-    buf = GLOB_ALLOC_N(char, n + 1);
-    if (!buf) return -1;
-    MEMCPY(buf, start, char, n);
-    buf[n] = '\0';
-
-    list = glob_make_pattern(root, root + strlen(root), flags, enc);
-    if (!list) {
-	GLOB_FREE(buf);
-	return -1;
-    }
-    status = glob_helper(fd, buf, baselen, n-baselen, dirsep,
-			 path_unknown, &list, &list + 1,
-			 flags, funcs, arg, enc);
-    glob_free_pattern(list);
-    GLOB_FREE(buf);
-
-    return status;
-}
-
-int
-ruby_glob(const char *path, int flags, ruby_glob_func *func, VALUE arg)
-{
-    ruby_glob_funcs_t funcs;
-    funcs.match = func;
-    funcs.error = 0;
-    return ruby_glob0(path, AT_FDCWD, 0, flags & ~GLOB_VERBOSE,
-		      &funcs, arg, rb_ascii8bit_encoding());
-}
-
-static int
-rb_glob_caller(const char *path, VALUE a, void *enc)
-{
-    int status;
-    struct glob_args *args = (struct glob_args *)a;
-
-    args->path = path;
-    rb_protect(glob_func_caller, a, &status);
-    return status;
-}
-
-static const ruby_glob_funcs_t rb_glob_funcs = {
-    rb_glob_caller, rb_glob_error,
-};
-
-void
-rb_glob(const char *path, void (*func)(const char *, VALUE, void *), VALUE arg)
-{
-    struct glob_args args;
-    int status;
-
-    args.func = func;
-    args.value = arg;
-    args.enc = rb_ascii8bit_encoding();
-
-    status = ruby_glob0(path, AT_FDCWD, 0, GLOB_VERBOSE, &rb_glob_funcs,
-			(VALUE)&args, args.enc);
-    if (status) GLOB_JUMP_TAG(status);
 }
 
 static void
-push_pattern(const char *path, VALUE ary, void *enc)
-{
-#if defined _WIN32 || defined __APPLE__
-    VALUE name = rb_utf8_str_new_cstr(path);
-    rb_encoding *eenc = rb_default_internal_encoding();
-    name = rb_str_conv_enc(name, NULL, eenc ? eenc : enc);
-#else
-    VALUE name = rb_external_str_new_with_enc(path, strlen(path), enc);
-#endif
-    rb_ary_push(ary, name);
-}
-
-static int
-ruby_brace_expand(const char *str, int flags, ruby_glob_func *func, VALUE arg,
-		  rb_encoding *enc, VALUE var)
+push_braces(ary, s)
+    VALUE ary;
+    char *s;
 {
-    const int escape = !(flags & FNM_NOESCAPE);
-    const char *p = str;
-    const char *pend = p + strlen(p);
-    const char *s = p;
-    const char *lbrace = 0, *rbrace = 0;
-    int nest = 0, status = 0;
+    char buf[MAXPATHLEN];
+    char *p, *t, *b;
+    char *lbrace, *rbrace;
 
+    p = s;
+    lbrace = rbrace = 0;
     while (*p) {
-	if (*p == '{' && nest++ == 0) {
+	if (*p == '{') {
 	    lbrace = p;
+	    break;
 	}
-	if (*p == '}' && lbrace && --nest == 0) {
+	p++;
+    }
+    while (*p) {
+	if (*p == '}' && lbrace) {
 	    rbrace = p;
 	    break;
 	}
-	if (*p == '\\' && escape) {
-	    if (!*++p) break;
-	}
-	Inc(p, pend, enc);
+	p++;
     }
 
-    if (lbrace && rbrace) {
-	size_t len = strlen(s) + 1;
-	char *buf = GLOB_ALLOC_N(char, len);
-	long shift;
-
-	if (!buf) return -1;
+    if (lbrace) {
 	memcpy(buf, s, lbrace-s);
-	shift = (lbrace-s);
+	b = buf + (lbrace-s);
 	p = lbrace;
-	while (p < rbrace) {
-	    const char *t = ++p;
-	    nest = 0;
-	    while (p < rbrace && !(*p == ',' && nest == 0)) {
-		if (*p == '{') nest++;
-		if (*p == '}') nest--;
-		if (*p == '\\' && escape) {
-		    if (++p == rbrace) break;
-		}
-		Inc(p, pend, enc);
+	while (*p != '}') {
+	    t = p + 1;
+	    for (p = t; *p!='}' && *p!=','; p++) {
+		/* skip inner braces */
+		if (*p == '{') while (*p!='}') p++;
 	    }
-	    memcpy(buf+shift, t, p-t);
-	    strlcpy(buf+shift+(p-t), rbrace+1, len-(shift+(p-t)));
-	    status = ruby_brace_expand(buf, flags, func, arg, enc, var);
-	    if (status) break;
-	}
-	GLOB_FREE(buf);
-    }
-    else if (!lbrace && !rbrace) {
-	status = glob_call_func(func, s, arg, enc);
-    }
-
-    RB_GC_GUARD(var);
-    return status;
-}
-
-struct brace_args {
-    ruby_glob_funcs_t funcs;
-    VALUE value;
-    int flags;
-};
-
-static int
-glob_brace(const char *path, VALUE val, void *enc)
-{
-    struct brace_args *arg = (struct brace_args *)val;
-
-    return ruby_glob0(path, AT_FDCWD, 0, arg->flags, &arg->funcs, arg->value, enc);
-}
-
-int
-ruby_brace_glob_with_enc(const char *str, int flags, ruby_glob_func *func, VALUE arg, rb_encoding *enc)
-{
-    struct brace_args args;
-
-    flags &= ~GLOB_VERBOSE;
-    args.funcs.match = func;
-    args.funcs.error = 0;
-    args.value = arg;
-    args.flags = flags;
-    return ruby_brace_expand(str, flags, glob_brace, (VALUE)&args, enc, Qfalse);
-}
-
-int
-ruby_brace_glob(const char *str, int flags, ruby_glob_func *func, VALUE arg)
-{
-    return ruby_brace_glob_with_enc(str, flags, func, arg, rb_ascii8bit_encoding());
-}
-
-static int
-push_glob(VALUE ary, VALUE str, VALUE base, int flags)
-{
-    struct glob_args args;
-    int fd;
-    rb_encoding *enc = rb_enc_get(str);
-
-#if defined _WIN32 || defined __APPLE__
-    str = rb_str_encode_ospath(str);
-#endif
-    if (rb_enc_to_index(enc) == ENCINDEX_US_ASCII)
-	enc = rb_filesystem_encoding();
-    if (rb_enc_to_index(enc) == ENCINDEX_US_ASCII)
-	enc = rb_ascii8bit_encoding();
-    flags |= GLOB_VERBOSE;
-    args.func = push_pattern;
-    args.value = ary;
-    args.enc = enc;
-    args.base = 0;
-    fd = AT_FDCWD;
-    if (!NIL_P(base)) {
-	if (!RB_TYPE_P(base, T_STRING) || !rb_enc_check(str, base)) {
-	    struct dir_data *dirp = DATA_PTR(base);
-	    if (!dirp->dir) dir_closed();
-#ifdef HAVE_DIRFD
-	    if ((fd = dirfd(dirp->dir)) == -1)
-		rb_sys_fail_path(dir_inspect(base));
-#endif
-	    base = dirp->path;
+	    memcpy(b, t, p-t);
+	    strcpy(b+(p-t), rbrace+1);
+	    push_braces(ary, buf);
 	}
-	args.base = RSTRING_PTR(base);
-    }
-#if defined _WIN32 || defined __APPLE__
-    enc = rb_utf8_encoding();
-#endif
-
-    return ruby_glob0(RSTRING_PTR(str), fd, args.base, flags, &rb_glob_funcs,
-		      (VALUE)&args, enc);
-}
-
-static VALUE
-rb_push_glob(VALUE str, VALUE base, int flags) /* '\0' is delimiter */
-{
-    VALUE ary;
-    int status;
-
-    /* can contain null bytes as separators */
-    if (!RB_TYPE_P(str, T_STRING)) {
-	FilePathValue(str);
-    }
-    else if (!rb_str_to_cstr(str)) {
-        rb_raise(rb_eArgError, "nul-separated glob pattern is deprecated");
     }
     else {
-	rb_enc_check(str, rb_enc_from_encoding(rb_usascii_encoding()));
+	push_globs(ary, s);
     }
-    ary = rb_ary_new();
-
-    status = push_glob(ary, str, base, flags);
-    if (status) GLOB_JUMP_TAG(status);
-
-    return ary;
-}
-
-static VALUE
-dir_globs(VALUE args, VALUE base, int flags)
-{
-    VALUE ary = rb_ary_new();
-    long i;
-
-    for (i = 0; i < RARRAY_LEN(args); ++i) {
-	int status;
-	VALUE str = RARRAY_AREF(args, i);
-	FilePathValue(str);
-	status = push_glob(ary, str, base, flags);
-	if (status) GLOB_JUMP_TAG(status);
-    }
-    RB_GC_GUARD(args);
-
-    return ary;
 }
 
 static VALUE
-dir_glob_option_base(VALUE base)
-{
-    if (base == Qundef || NIL_P(base)) {
-	return Qnil;
-    }
-#if USE_OPENDIR_AT
-    if (rb_typeddata_is_kind_of(base, &dir_data_type)) {
-	return base;
-    }
-#endif
-    FilePathValue(base);
-    if (!RSTRING_LEN(base)) return Qnil;
-    return base;
-}
-
-static int
-dir_glob_option_sort(VALUE sort)
+dir_s_glob(dir, vstr)
+    VALUE dir, vstr;
 {
-    return (sort ? 0 : FNM_GLOB_NOSORT);
-}
+    char *p, *pend;
+    char buf[MAXPATHLEN];
+    char *t, *t0;
+    int nest;
+    VALUE ary;
+    struct RString *str;
 
-static VALUE
-dir_s_aref(rb_execution_context_t *ec, VALUE obj, VALUE args, VALUE base, VALUE sort)
-{
-    const int flags = dir_glob_option_sort(sort);
-    base = dir_glob_option_base(base);
-    if (RARRAY_LEN(args) == 1) {
-	return rb_push_glob(RARRAY_AREF(args, 0), base, flags);
-    }
-    return dir_globs(args, base, flags);
-}
+    Check_SafeStr(vstr);
+    str = RSTRING(vstr);
+    ary = ary_new();
 
-static VALUE
-dir_s_glob(rb_execution_context_t *ec, VALUE obj, VALUE str, VALUE rflags, VALUE base, VALUE sort)
-{
-    VALUE ary = rb_check_array_type(str);
-    const int flags = NUM2INT(rflags) | dir_glob_option_sort(sort);
-    base = dir_glob_option_base(base);
-    if (NIL_P(ary)) {
-	ary = rb_push_glob(str, base, flags);
-    }
-    else {
-        ary = dir_globs(ary, base, flags);
-    }
+    p = str->ptr;
+    pend = p + str->len;
 
-    if (rb_block_given_p()) {
-	rb_ary_each(ary);
-	return Qnil;
+    while (p < pend) {
+	t = buf;
+	while (p < pend && isdelim(*p)) p++;
+	while (p < pend && !isdelim(*p)) {
+	    *t++ = *p++;
+	}
+	*t = '\0';
+	t0 = buf;
+	nest = 0;
+	while (t0 < t) {
+	    if (*t0 == '{') nest+=2;
+	    if (*t0 == '}') nest+=3;
+	    t0++;
+	}
+	if (nest == 0) {
+	    push_globs(ary, buf);
+	}
+	else if (nest % 5 == 0) {
+	    push_braces(ary, buf);
+	}
+	/* else unmatched braces */
     }
     return ary;
 }
 
 static VALUE
-dir_open_dir(int argc, VALUE *argv)
-{
-    VALUE dir = rb_funcallv_kw(rb_cDir, rb_intern("open"), argc, argv, RB_PASS_CALLED_KEYWORDS);
-
-    rb_check_typeddata(dir, &dir_data_type);
-    return dir;
-}
-
-
-/*
- *  call-seq:
- *     Dir.foreach( dirname ) {| filename | block }                 -> nil
- *     Dir.foreach( dirname, encoding: enc ) {| filename | block }  -> nil
- *     Dir.foreach( dirname )                                       -> an_enumerator
- *     Dir.foreach( dirname, encoding: enc )                        -> an_enumerator
- *
- *  Calls the block once for each entry in the named directory, passing
- *  the filename of each entry as a parameter to the block.
- *
- *  If no block is given, an enumerator is returned instead.
- *
- *     Dir.foreach("testdir") {|x| puts "Got #{x}" }
- *
- *  <em>produces:</em>
- *
- *     Got .
- *     Got ..
- *     Got config.h
- *     Got main.rb
- *
- */
-static VALUE
-dir_foreach(int argc, VALUE *argv, VALUE io)
-{
-    VALUE dir;
-
-    RETURN_ENUMERATOR(io, argc, argv);
-    dir = dir_open_dir(argc, argv);
-    rb_ensure(dir_each, dir, dir_close, dir);
-    return Qnil;
-}
-
-static VALUE
-dir_collect(VALUE dir)
-{
-    VALUE ary = rb_ary_new();
-    dir_each_entry(dir, rb_ary_push, ary, FALSE);
-    return ary;
-}
-
-/*
- *  call-seq:
- *     Dir.entries( dirname )                -> array
- *     Dir.entries( dirname, encoding: enc ) -> array
- *
- *  Returns an array containing all of the filenames in the given
- *  directory. Will raise a SystemCallError if the named directory
- *  doesn't exist.
- *
- *  The optional <i>encoding</i> keyword argument specifies the encoding of the
- *  directory. If not specified, the filesystem encoding is used.
- *
- *     Dir.entries("testdir")   #=> [".", "..", "config.h", "main.rb"]
- *
- */
-static VALUE
-dir_entries(int argc, VALUE *argv, VALUE io)
-{
-    VALUE dir;
-
-    dir = dir_open_dir(argc, argv);
-    return rb_ensure(dir_collect, dir, dir_close, dir);
-}
-
-static VALUE
-dir_each_child(VALUE dir)
-{
-    return dir_each_entry(dir, dir_yield, Qnil, TRUE);
-}
-
-/*
- *  call-seq:
- *     Dir.each_child( dirname ) {| filename | block }                 -> nil
- *     Dir.each_child( dirname, encoding: enc ) {| filename | block }  -> nil
- *     Dir.each_child( dirname )                                       -> an_enumerator
- *     Dir.each_child( dirname, encoding: enc )                        -> an_enumerator
- *
- *  Calls the block once for each entry except for "." and ".." in the
- *  named directory, passing the filename of each entry as a parameter
- *  to the block.
- *
- *  If no block is given, an enumerator is returned instead.
- *
- *     Dir.each_child("testdir") {|x| puts "Got #{x}" }
- *
- *  <em>produces:</em>
- *
- *     Got config.h
- *     Got main.rb
- *
- */
-static VALUE
-dir_s_each_child(int argc, VALUE *argv, VALUE io)
-{
-    VALUE dir;
-
-    RETURN_ENUMERATOR(io, argc, argv);
-    dir = dir_open_dir(argc, argv);
-    rb_ensure(dir_each_child, dir, dir_close, dir);
-    return Qnil;
-}
-
-/*
- *  call-seq:
- *     dir.each_child {| filename | block }  -> dir
- *     dir.each_child                        -> an_enumerator
- *
- *  Calls the block once for each entry except for "." and ".." in
- *  this directory, passing the filename of each entry as a parameter
- *  to the block.
- *
- *  If no block is given, an enumerator is returned instead.
- *
- *     d = Dir.new("testdir")
- *     d.each_child  {|x| puts "Got #{x}" }
- *
- *  <em>produces:</em>
- *
- *     Got config.h
- *     Got main.rb
- *
- */
-static VALUE
-dir_each_child_m(VALUE dir)
-{
-    RETURN_ENUMERATOR(dir, 0, 0);
-    return dir_each_entry(dir, dir_yield, Qnil, TRUE);
-}
-
-/*
- *  call-seq:
- *     dir.children  -> array
- *
- *  Returns an array containing all of the filenames except for "."
- *  and ".." in this directory.
- *
- *     d = Dir.new("testdir")
- *     d.children   #=> ["config.h", "main.rb"]
- *
- */
-static VALUE
-dir_collect_children(VALUE dir)
-{
-    VALUE ary = rb_ary_new();
-    dir_each_entry(dir, rb_ary_push, ary, TRUE);
-    return ary;
-}
-
-/*
- *  call-seq:
- *     Dir.children( dirname )                -> array
- *     Dir.children( dirname, encoding: enc ) -> array
- *
- *  Returns an array containing all of the filenames except for "."
- *  and ".." in the given directory. Will raise a SystemCallError if
- *  the named directory doesn't exist.
- *
- *  The optional <i>encoding</i> keyword argument specifies the encoding of the
- *  directory. If not specified, the filesystem encoding is used.
- *
- *     Dir.children("testdir")   #=> ["config.h", "main.rb"]
- *
- */
-static VALUE
-dir_s_children(int argc, VALUE *argv, VALUE io)
+dir_foreach(io, dirname)
+    VALUE io, dirname;
 {
     VALUE dir;
 
-    dir = dir_open_dir(argc, argv);
-    return rb_ensure(dir_collect_children, dir, dir_close, dir);
+    dir = rb_funcall(cDir, rb_intern("open"), 1, dirname);
+    return rb_ensure(dir_each, dir, dir_close, dir);
 }
 
-static int
-fnmatch_brace(const char *pattern, VALUE val, void *enc)
+void
+Init_Dir()
 {
-    struct brace_args *arg = (struct brace_args *)val;
-    VALUE path = arg->value;
-    rb_encoding *enc_pattern = enc;
-    rb_encoding *enc_path = rb_enc_get(path);
-
-    if (enc_pattern != enc_path) {
-	if (!rb_enc_asciicompat(enc_pattern))
-	    return FNM_NOMATCH;
-	if (!rb_enc_asciicompat(enc_path))
-	    return FNM_NOMATCH;
-	if (!rb_enc_str_asciionly_p(path)) {
-	    int cr = ENC_CODERANGE_7BIT;
-	    long len = strlen(pattern);
-	    if (rb_str_coderange_scan_restartable(pattern, pattern + len,
-						  enc_pattern, &cr) != len)
-		return FNM_NOMATCH;
-	    if (cr != ENC_CODERANGE_7BIT)
-		return FNM_NOMATCH;
-	}
-    }
-    return (fnmatch(pattern, enc, RSTRING_PTR(path), arg->flags) == 0);
-}
+    extern VALUE mEnumerable;
 
-/*
- *  call-seq:
- *     File.fnmatch( pattern, path, [flags] ) -> (true or false)
- *     File.fnmatch?( pattern, path, [flags] ) -> (true or false)
- *
- *  Returns true if +path+ matches against +pattern+.  The pattern is not a
- *  regular expression; instead it follows rules similar to shell filename
- *  globbing.  It may contain the following metacharacters:
- *
- *  <code>*</code>::
- *    Matches any file. Can be restricted by other values in the glob.
- *    Equivalent to <code>/ .* /x</code> in regexp.
- *
- *    <code>*</code>::    Matches all files regular files
- *    <code>c*</code>::   Matches all files beginning with <code>c</code>
- *    <code>*c</code>::   Matches all files ending with <code>c</code>
- *    <code>\*c*</code>:: Matches all files that have <code>c</code> in them
- *                        (including at the beginning or end).
- *
- *    To match hidden files (that start with a <code>.</code> set the
- *    File::FNM_DOTMATCH flag.
- *
- *  <code>**</code>::
- *    Matches directories recursively or files expansively.
- *
- *  <code>?</code>::
- *    Matches any one character. Equivalent to <code>/.{1}/</code> in regexp.
- *
- *  <code>[set]</code>::
- *    Matches any one character in +set+.  Behaves exactly like character sets
- *    in Regexp, including set negation (<code>[^a-z]</code>).
- *
- *  <code> \ </code>::
- *    Escapes the next metacharacter.
- *
- *  <code>{a,b}</code>::
- *    Matches pattern a and pattern b if File::FNM_EXTGLOB flag is enabled.
- *    Behaves like a Regexp union (<code>(?:a|b)</code>).
- *
- *  +flags+ is a bitwise OR of the <code>FNM_XXX</code> constants. The same
- *  glob pattern and flags are used by Dir::glob.
- *
- *  Examples:
- *
- *     File.fnmatch('cat',       'cat')        #=> true  # match entire string
- *     File.fnmatch('cat',       'category')   #=> false # only match partial string
- *
- *     File.fnmatch('c{at,ub}s', 'cats')                    #=> false # { } isn't supported by default
- *     File.fnmatch('c{at,ub}s', 'cats', File::FNM_EXTGLOB) #=> true  # { } is supported on FNM_EXTGLOB
- *
- *     File.fnmatch('c?t',     'cat')          #=> true  # '?' match only 1 character
- *     File.fnmatch('c??t',    'cat')          #=> false # ditto
- *     File.fnmatch('c*',      'cats')         #=> true  # '*' match 0 or more characters
- *     File.fnmatch('c*t',     'c/a/b/t')      #=> true  # ditto
- *     File.fnmatch('ca[a-z]', 'cat')          #=> true  # inclusive bracket expression
- *     File.fnmatch('ca[^t]',  'cat')          #=> false # exclusive bracket expression ('^' or '!')
- *
- *     File.fnmatch('cat', 'CAT')                     #=> false # case sensitive
- *     File.fnmatch('cat', 'CAT', File::FNM_CASEFOLD) #=> true  # case insensitive
- *     File.fnmatch('cat', 'CAT', File::FNM_SYSCASE)  #=> true or false # depends on the system default
- *
- *     File.fnmatch('?',   '/', File::FNM_PATHNAME)  #=> false # wildcard doesn't match '/' on FNM_PATHNAME
- *     File.fnmatch('*',   '/', File::FNM_PATHNAME)  #=> false # ditto
- *     File.fnmatch('[/]', '/', File::FNM_PATHNAME)  #=> false # ditto
- *
- *     File.fnmatch('\?',   '?')                       #=> true  # escaped wildcard becomes ordinary
- *     File.fnmatch('\a',   'a')                       #=> true  # escaped ordinary remains ordinary
- *     File.fnmatch('\a',   '\a', File::FNM_NOESCAPE)  #=> true  # FNM_NOESCAPE makes '\' ordinary
- *     File.fnmatch('[\?]', '?')                       #=> true  # can escape inside bracket expression
- *
- *     File.fnmatch('*',   '.profile')                      #=> false # wildcard doesn't match leading
- *     File.fnmatch('*',   '.profile', File::FNM_DOTMATCH)  #=> true  # period by default.
- *     File.fnmatch('.*',  '.profile')                      #=> true
- *
- *     rbfiles = '**' '/' '*.rb' # you don't have to do like this. just write in single string.
- *     File.fnmatch(rbfiles, 'main.rb')                    #=> false
- *     File.fnmatch(rbfiles, './main.rb')                  #=> false
- *     File.fnmatch(rbfiles, 'lib/song.rb')                #=> true
- *     File.fnmatch('**.rb', 'main.rb')                    #=> true
- *     File.fnmatch('**.rb', './main.rb')                  #=> false
- *     File.fnmatch('**.rb', 'lib/song.rb')                #=> true
- *     File.fnmatch('*',           'dave/.profile')                      #=> true
- *
- *     pattern = '*' '/' '*'
- *     File.fnmatch(pattern, 'dave/.profile', File::FNM_PATHNAME)  #=> false
- *     File.fnmatch(pattern, 'dave/.profile', File::FNM_PATHNAME | File::FNM_DOTMATCH) #=> true
- *
- *     pattern = '**' '/' 'foo'
- *     File.fnmatch(pattern, 'a/b/c/foo', File::FNM_PATHNAME)     #=> true
- *     File.fnmatch(pattern, '/a/b/c/foo', File::FNM_PATHNAME)    #=> true
- *     File.fnmatch(pattern, 'c:/a/b/c/foo', File::FNM_PATHNAME)  #=> true
- *     File.fnmatch(pattern, 'a/.b/c/foo', File::FNM_PATHNAME)    #=> false
- *     File.fnmatch(pattern, 'a/.b/c/foo', File::FNM_PATHNAME | File::FNM_DOTMATCH) #=> true
- */
-static VALUE
-file_s_fnmatch(int argc, VALUE *argv, VALUE obj)
-{
-    VALUE pattern, path;
-    VALUE rflags;
-    int flags;
-
-    if (rb_scan_args(argc, argv, "21", &pattern, &path, &rflags) == 3)
-	flags = NUM2INT(rflags);
-    else
-	flags = 0;
-
-    StringValueCStr(pattern);
-    FilePathStringValue(path);
-
-    if (flags & FNM_EXTGLOB) {
-	struct brace_args args;
-
-	args.value = path;
-	args.flags = flags;
-	if (ruby_brace_expand(RSTRING_PTR(pattern), flags, fnmatch_brace,
-			      (VALUE)&args, rb_enc_get(pattern), pattern) > 0)
-	    return Qtrue;
-    }
-    else {
-	rb_encoding *enc = rb_enc_compatible(pattern, path);
-	if (!enc) return Qfalse;
-	if (fnmatch(RSTRING_PTR(pattern), enc, RSTRING_PTR(path), flags) == 0)
-	    return Qtrue;
-    }
-    RB_GC_GUARD(pattern);
+    cDir = rb_define_class("Dir", cObject);
 
-    return Qfalse;
-}
+    rb_include_module(cDir, mEnumerable);
 
-/*
- *  call-seq:
- *    Dir.home()       -> "/home/me"
- *    Dir.home("root") -> "/root"
- *
- *  Returns the home directory of the current user or the named user
- *  if given.
- */
-static VALUE
-dir_s_home(int argc, VALUE *argv, VALUE obj)
-{
-    VALUE user;
-    const char *u = 0;
-
-    rb_check_arity(argc, 0, 1);
-    user = (argc > 0) ? argv[0] : Qnil;
-    if (!NIL_P(user)) {
-	SafeStringValue(user);
-	rb_must_asciicompat(user);
-	u = StringValueCStr(user);
-	if (*u) {
-	    return rb_home_dir_of(user, rb_str_new(0, 0));
-	}
-    }
-    return rb_default_home_dir(rb_str_new(0, 0));
+    rb_define_singleton_method(cDir, "new", dir_s_open, 1);
+    rb_define_singleton_method(cDir, "open", dir_s_open, 1);
+    rb_define_singleton_method(cDir, "foreach", dir_foreach, 1);
 
-}
+    rb_define_method(cDir,"read", dir_read, 0);
+    rb_define_method(cDir,"each", dir_each, 0);
+    rb_define_method(cDir,"rewind", dir_rewind, 0);
+    rb_define_method(cDir,"tell", dir_tell, 0);
+    rb_define_method(cDir,"seek", dir_seek, 1);
+    rb_define_method(cDir,"close", dir_close, 0);
 
-#if 0
-/*
- * call-seq:
- *   Dir.exist?(file_name)   ->  true or false
- *
- * Returns <code>true</code> if the named file is a directory,
- * <code>false</code> otherwise.
- *
- */
-VALUE
-rb_file_directory_p(void)
-{
-}
-#endif
+    rb_define_singleton_method(cDir,"chdir", dir_s_chdir, -1);
+    rb_define_singleton_method(cDir,"getwd", dir_s_getwd, 0);
+    rb_define_singleton_method(cDir,"pwd", dir_s_getwd, 0);
+    rb_define_singleton_method(cDir,"chroot", dir_s_chroot, 1);
+    rb_define_singleton_method(cDir,"mkdir", dir_s_mkdir, -1);
+    rb_define_singleton_method(cDir,"rmdir", dir_s_rmdir, 1);
+    rb_define_singleton_method(cDir,"delete", dir_s_rmdir, 1);
+    rb_define_singleton_method(cDir,"unlink", dir_s_rmdir, 1);
 
-/* :nodoc: */
-static VALUE
-rb_dir_exists_p(VALUE obj, VALUE fname)
-{
-    rb_warn_deprecated("Dir.exists?", "Dir.exist?");
-    return rb_file_directory_p(obj, fname);
+    rb_define_singleton_method(cDir,"glob", dir_s_glob, 1);
+    rb_define_singleton_method(cDir,"[]", dir_s_glob, 1);
 }
-
-static void *
-nogvl_dir_empty_p(void *ptr)
-{
-    const char *path = ptr;
-    DIR *dir = opendir(path);
-    struct dirent *dp;
-    VALUE result = Qtrue;
-
-    if (!dir) {
-	int e = errno;
-	switch (gc_for_fd_with_gvl(e)) {
-	  default:
-	    dir = opendir(path);
-	    if (dir) break;
-	    e = errno;
-	    /* fall through */
-	  case 0:
-	    if (e == ENOTDIR) return (void *)Qfalse;
-	    errno = e; /* for rb_sys_fail_path */
-	    return (void *)Qundef;
-	}
-    }
-    while ((dp = READDIR(dir, NULL)) != NULL) {
-	if (!to_be_skipped(dp)) {
-	    result = Qfalse;
-	    break;
-	}
-    }
-    closedir(dir);
-    return (void *)result;
-}
-
-/*
- * call-seq:
- *   Dir.empty?(path_name)  ->  true or false
- *
- * Returns <code>true</code> if the named file is an empty directory,
- * <code>false</code> if it is not a directory or non-empty.
- */
-static VALUE
-rb_dir_s_empty_p(VALUE obj, VALUE dirname)
-{
-    VALUE result, orig;
-    const char *path;
-    enum {false_on_notdir = 1};
-
-    FilePathValue(dirname);
-    orig = rb_str_dup_frozen(dirname);
-    dirname = rb_str_encode_ospath(dirname);
-    dirname = rb_str_dup_frozen(dirname);
-    path = RSTRING_PTR(dirname);
-
-#if defined HAVE_GETATTRLIST && defined ATTR_DIR_ENTRYCOUNT
-    {
-	u_int32_t attrbuf[SIZEUP32(fsobj_tag_t)];
-	struct attrlist al = {ATTR_BIT_MAP_COUNT, 0, ATTR_CMN_OBJTAG,};
-	if (getattrlist(path, &al, attrbuf, sizeof(attrbuf), 0) != 0)
-	    rb_sys_fail_path(orig);
-	if (*(const fsobj_tag_t *)(attrbuf+1) == VT_HFS) {
-	    al.commonattr = 0;
-	    al.dirattr = ATTR_DIR_ENTRYCOUNT;
-	    if (getattrlist(path, &al, attrbuf, sizeof(attrbuf), 0) == 0) {
-		if (attrbuf[0] >= 2 * sizeof(u_int32_t))
-		    return attrbuf[1] ? Qfalse : Qtrue;
-		if (false_on_notdir) return Qfalse;
-	    }
-	    rb_sys_fail_path(orig);
-	}
-    }
-#endif
-
-    result = (VALUE)rb_thread_call_without_gvl(nogvl_dir_empty_p, (void *)path,
-					    RUBY_UBF_IO, 0);
-    if (result == Qundef) {
-	rb_sys_fail_path(orig);
-    }
-    return result;
-}
-
-/*
- *  Objects of class Dir are directory streams representing
- *  directories in the underlying file system. They provide a variety
- *  of ways to list directories and their contents. See also File.
- *
- *  The directory used in these examples contains the two regular files
- *  (<code>config.h</code> and <code>main.rb</code>), the parent
- *  directory (<code>..</code>), and the directory itself
- *  (<code>.</code>).
- */
-void
-Init_Dir(void)
-{
-    rb_cDir = rb_define_class("Dir", rb_cObject);
-
-    rb_include_module(rb_cDir, rb_mEnumerable);
-
-    rb_define_alloc_func(rb_cDir, dir_s_alloc);
-    rb_define_singleton_method(rb_cDir, "foreach", dir_foreach, -1);
-    rb_define_singleton_method(rb_cDir, "entries", dir_entries, -1);
-    rb_define_singleton_method(rb_cDir, "each_child", dir_s_each_child, -1);
-    rb_define_singleton_method(rb_cDir, "children", dir_s_children, -1);
-
-    rb_define_method(rb_cDir,"fileno", dir_fileno, 0);
-    rb_define_method(rb_cDir,"path", dir_path, 0);
-    rb_define_method(rb_cDir,"to_path", dir_path, 0);
-    rb_define_method(rb_cDir,"inspect", dir_inspect, 0);
-    rb_define_method(rb_cDir,"read", dir_read, 0);
-    rb_define_method(rb_cDir,"each", dir_each, 0);
-    rb_define_method(rb_cDir,"each_child", dir_each_child_m, 0);
-    rb_define_method(rb_cDir,"children", dir_collect_children, 0);
-    rb_define_method(rb_cDir,"rewind", dir_rewind, 0);
-    rb_define_method(rb_cDir,"tell", dir_tell, 0);
-    rb_define_method(rb_cDir,"seek", dir_seek, 1);
-    rb_define_method(rb_cDir,"pos", dir_tell, 0);
-    rb_define_method(rb_cDir,"pos=", dir_set_pos, 1);
-    rb_define_method(rb_cDir,"close", dir_close, 0);
-
-    rb_define_singleton_method(rb_cDir,"chdir", dir_s_chdir, -1);
-    rb_define_singleton_method(rb_cDir,"getwd", dir_s_getwd, 0);
-    rb_define_singleton_method(rb_cDir,"pwd", dir_s_getwd, 0);
-    rb_define_singleton_method(rb_cDir,"chroot", dir_s_chroot, 1);
-    rb_define_singleton_method(rb_cDir,"mkdir", dir_s_mkdir, -1);
-    rb_define_singleton_method(rb_cDir,"rmdir", dir_s_rmdir, 1);
-    rb_define_singleton_method(rb_cDir,"delete", dir_s_rmdir, 1);
-    rb_define_singleton_method(rb_cDir,"unlink", dir_s_rmdir, 1);
-    rb_define_singleton_method(rb_cDir,"home", dir_s_home, -1);
-
-    rb_define_singleton_method(rb_cDir,"exist?", rb_file_directory_p, 1);
-    rb_define_singleton_method(rb_cDir,"exists?", rb_dir_exists_p, 1);
-    rb_define_singleton_method(rb_cDir,"empty?", rb_dir_s_empty_p, 1);
-
-    rb_define_singleton_method(rb_cFile,"fnmatch", file_s_fnmatch, -1);
-    rb_define_singleton_method(rb_cFile,"fnmatch?", file_s_fnmatch, -1);
-
-    /*  Document-const: File::Constants::FNM_NOESCAPE
-     *
-     *  Disables escapes in File.fnmatch and Dir.glob patterns
-     */
-    rb_file_const("FNM_NOESCAPE", INT2FIX(FNM_NOESCAPE));
-
-    /*  Document-const: File::Constants::FNM_PATHNAME
-     *
-     *  Wildcards in File.fnmatch and Dir.glob patterns do not match directory
-     *  separators
-     */
-    rb_file_const("FNM_PATHNAME", INT2FIX(FNM_PATHNAME));
-
-    /*  Document-const: File::Constants::FNM_DOTMATCH
-     *
-     *  The '*' wildcard matches filenames starting with "." in File.fnmatch
-     *  and Dir.glob patterns
-     */
-    rb_file_const("FNM_DOTMATCH", INT2FIX(FNM_DOTMATCH));
-
-    /*  Document-const: File::Constants::FNM_CASEFOLD
-     *
-     *  Makes File.fnmatch patterns case insensitive (but not Dir.glob
-     *  patterns).
-     */
-    rb_file_const("FNM_CASEFOLD", INT2FIX(FNM_CASEFOLD));
-
-    /*  Document-const: File::Constants::FNM_EXTGLOB
-     *
-     *  Allows file globbing through "{a,b}" in File.fnmatch patterns.
-     */
-    rb_file_const("FNM_EXTGLOB", INT2FIX(FNM_EXTGLOB));
-
-    /*  Document-const: File::Constants::FNM_SYSCASE
-     *
-     *  System default case insensitiveness, equals to FNM_CASEFOLD or
-     *  0.
-     */
-    rb_file_const("FNM_SYSCASE", INT2FIX(FNM_SYSCASE));
-
-    /*  Document-const: File::Constants::FNM_SHORTNAME
-     *
-     *  Makes patterns to match short names if existing.  Valid only
-     *  on Microsoft Windows.
-     */
-    rb_file_const("FNM_SHORTNAME", INT2FIX(FNM_SHORTNAME));
-}
-
-#include "dir.rbinc"
diff --git a/dir.rb b/dir.rb
deleted file mode 100644
index 7eacc66fc7..0000000000
--- a/dir.rb
+++ /dev/null
@@ -1,138 +0,0 @@
-class Dir
-  #    Dir.open( string ) -> aDir
-  #    Dir.open( string, encoding: enc ) -> aDir
-  #    Dir.open( string ) {| aDir | block } -> anObject
-  #    Dir.open( string, encoding: enc ) {| aDir | block } -> anObject
-  #
-  # The optional <i>encoding</i> keyword argument specifies the encoding of the directory.
-  # If not specified, the filesystem encoding is used.
-  #
-  # With no block, <code>open</code> is a synonym for Dir::new. If a
-  # block is present, it is passed <i>aDir</i> as a parameter. The
-  # directory is closed at the end of the block, and Dir::open returns
-  # the value of the block.
-  def self.open(name, encoding: nil, &block)
-    dir = Primitive.dir_s_open(name, encoding)
-    if block
-      begin
-        yield dir
-      ensure
-        Primitive.dir_s_close(dir)
-      end
-    else
-      dir
-    end
-  end
-
-  #    Dir.new( string ) -> aDir
-  #    Dir.new( string, encoding: enc ) -> aDir
-  #
-  # Returns a new directory object for the named directory.
-  #
-  # The optional <i>encoding</i> keyword argument specifies the encoding of the directory.
-  # If not specified, the filesystem encoding is used.
-  def initialize(name, encoding: nil)
-    Primitive.dir_initialize(name, encoding)
-  end
-
-  #    Dir[ string [, string ...] [, base: path] [, sort: true] ] -> array
-  #
-  # Equivalent to calling
-  # <code>Dir.glob([</code><i>string,...</i><code>], 0)</code>.
-  def self.[](*args, base: nil, sort: true)
-    Primitive.dir_s_aref(args, base, sort)
-  end
-
-  #    Dir.glob( pattern, [flags], [base: path] [, sort: true] )                       -> array
-  #    Dir.glob( pattern, [flags], [base: path] [, sort: true] ) { |filename| block }  -> nil
-  #
-  # Expands +pattern+, which is a pattern string or an Array of pattern
-  # strings, and returns an array containing the matching filenames.
-  # If a block is given, calls the block once for each matching filename,
-  # passing the filename as a parameter to the block.
-  #
-  # The optional +base+ keyword argument specifies the base directory for
-  # interpreting relative pathnames instead of the current working directory.
-  # As the results are not prefixed with the base directory name in this
-  # case, you will need to prepend the base directory name if you want real
-  # paths.
-  #
-  # The results which matched single wildcard or character set are sorted in
-  # binary ascending order, unless false is given as the optional +sort+
-  # keyword argument.  The order of an Array of pattern strings and braces
-  # are preserved.
-  #
-  # Note that the pattern is not a regexp, it's closer to a shell glob.
-  # See File::fnmatch for the meaning of the +flags+ parameter.
-  # Case sensitivity depends on your system (File::FNM_CASEFOLD is ignored).
-  #
-  # <code>*</code>::
-  #   Matches any file. Can be restricted by other values in the glob.
-  #   Equivalent to <code>/ .* /mx</code> in regexp.
-  #
-  #   <code>*</code>::     Matches all files
-  #   <code>c*</code>::    Matches all files beginning with <code>c</code>
-  #   <code>*c</code>::    Matches all files ending with <code>c</code>
-  #   <code>\*c\*</code>:: Match all files that have <code>c</code> in them
-  #                        (including at the beginning or end).
-  #
-  #   Note, this will not match Unix-like hidden files (dotfiles).  In order
-  #   to include those in the match results, you must use the
-  #   File::FNM_DOTMATCH flag or something like <code>"{*,.*}"</code>.
-  #
-  # <code>**</code>::
-  #   Matches directories recursively.
-  #
-  # <code>?</code>::
-  #   Matches any one character. Equivalent to <code>/.{1}/</code> in regexp.
-  #
-  # <code>[set]</code>::
-  #   Matches any one character in +set+.  Behaves exactly like character sets
-  #   in Regexp, including set negation (<code>[^a-z]</code>).
-  #
-  # <code>{p,q}</code>::
-  #   Matches either literal <code>p</code> or literal <code>q</code>.
-  #   Equivalent to pattern alternation in regexp.
-  #
-  #   Matching literals may be more than one character in length.  More than
-  #   two literals may be specified.
-  #
-  # <code> \\ </code>::
-  #   Escapes the next metacharacter.
-  #
-  #   Note that this means you cannot use backslash on windows as part of a
-  #   glob, i.e.  <code>Dir["c:\\foo*"]</code> will not work, use
-  #   <code>Dir["c:/foo*"]</code> instead.
-  #
-  # Examples:
-  #
-  #    Dir["config.?"]                     #=> ["config.h"]
-  #    Dir.glob("config.?")                #=> ["config.h"]
-  #    Dir.glob("*.[a-z][a-z]")            #=> ["main.rb"]
-  #    Dir.glob("*.[^r]*")                 #=> ["config.h"]
-  #    Dir.glob("*.{rb,h}")                #=> ["main.rb", "config.h"]
-  #    Dir.glob("*")                       #=> ["config.h", "main.rb"]
-  #    Dir.glob("*", File::FNM_DOTMATCH)   #=> [".", "..", "config.h", "main.rb"]
-  #    Dir.glob(["*.rb", "*.h"])           #=> ["main.rb", "config.h"]
-  #
-  #    rbfiles = File.join("**", "*.rb")
-  #    Dir.glob(rbfiles)                   #=> ["main.rb",
-  #                                        #    "lib/song.rb",
-  #                                        #    "lib/song/karaoke.rb"]
-  #
-  #    Dir.glob(rbfiles, base: "lib")      #=> ["song.rb",
-  #                                        #    "song/karaoke.rb"]
-  #
-  #    libdirs = File.join("**", "lib")
-  #    Dir.glob(libdirs)                   #=> ["lib"]
-  #
-  #    librbfiles = File.join("**", "lib", "**", "*.rb")
-  #    Dir.glob(librbfiles)                #=> ["lib/song.rb",
-  #                                        #    "lib/song/karaoke.rb"]
-  #
-  #    librbfiles = File.join("**", "lib", "*.rb")
-  #    Dir.glob(librbfiles)                #=> ["lib/song.rb"]
-  def self.glob(pattern, _flags = 0, flags: _flags, base: nil, sort: true)
-    Primitive.dir_s_glob(pattern, flags, base, sort)
-  end
-end
diff --git a/dln.c b/dln.c
index caaa685a6e..56dc7a6bf1 100644
--- a/dln.c
+++ b/dln.c
@@ -1,38 +1,26 @@
-/**********************************************************************
+/************************************************
 
   dln.c -
 
   $Author$
+  $Date$
   created at: Tue Jan 18 17:05:06 JST 1994
 
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
+  Copyright (C) 1993-1998 Yukihiro Matsumoto
 
-**********************************************************************/
+************************************************/
 
-#ifdef RUBY_EXPORT
-#include "ruby/ruby.h"
-#define dln_notimplement rb_notimplement
-#define dln_memerror rb_memerror
-#define dln_exit rb_exit
-#define dln_loaderror rb_loaderror
-#else
-#define dln_notimplement --->>> dln not implemented <<<---
-#define dln_memerror abort
-#define dln_exit exit
-static void dln_loaderror(const char *format, ...);
-#endif
+#include "config.h"
+#include "defines.h"
 #include "dln.h"
-#include "internal.h"
-
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
 
-#ifdef USE_DLN_A_OUT
 char *dln_argv0;
+
+#ifdef _AIX
+#pragma alloca
 #endif
 
-#if defined(HAVE_ALLOCA_H)
+#if defined(HAVE_ALLOCA_H) && !defined(__GNUC__)
 #include <alloca.h>
 #endif
 
@@ -42,30 +30,22 @@ char *dln_argv0;
 # include <strings.h>
 #endif
 
-#ifndef xmalloc
 void *xmalloc();
 void *xcalloc();
 void *xrealloc();
-#endif
-
-#undef free
-#define free(x) xfree(x)
 
 #include <stdio.h>
-#if defined(_WIN32)
+#ifndef NT
+#include <sys/file.h>
+#else
 #include "missing/file.h"
 #endif
 #include <sys/types.h>
 #include <sys/stat.h>
 
-#ifndef S_ISDIR
-#   define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
-#endif
-
 #ifdef HAVE_SYS_PARAM_H
 # include <sys/param.h>
-#endif
-#ifndef MAXPATHLEN
+#else
 # define MAXPATHLEN 1024
 #endif
 
@@ -73,80 +53,44 @@ void *xrealloc();
 # include <unistd.h>
 #endif
 
-#ifndef _WIN32
+#ifndef NT
+char *strdup();
 char *getenv();
 #endif
 
-#ifdef __APPLE__
-# if defined(HAVE_DLOPEN)
-   /* Mac OS X with dlopen (10.3 or later) */
-#  define MACOSX_DLOPEN
-# else
-#  define MACOSX_DYLD
-# endif
-#endif
+int eaccess();
 
-#ifndef dln_loaderror
-static void
-dln_loaderror(const char *format, ...)
-{
-    va_list ap;
-    va_start(ap, format);
-    vfprintf(stderr, format, ap);
-    va_end(ap);
-    abort();
-}
-#endif
-
-#if defined(HAVE_DLOPEN) && !defined(USE_DLN_A_OUT) && !defined(_AIX) && !defined(MACOSX_DYLD) && !defined(_UNICOSMP)
+#if defined(HAVE_DLOPEN) && !defined(USE_DLN_A_OUT)
 /* dynamic load with dlopen() */
 # define USE_DLN_DLOPEN
 #endif
 
-#if defined(__hp9000s300) || ((defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)) && !defined(__ELF__)) || defined(NeXT) || defined(MACOSX_DYLD)
-# define EXTERNAL_PREFIX "_"
-#else
-# define EXTERNAL_PREFIX ""
-#endif
-#define FUNCNAME_PREFIX EXTERNAL_PREFIX"Init_"
-
-#if defined __CYGWIN__ || defined DOSISH
-#define isdirsep(x) ((x) == '/' || (x) == '\\')
-#else
-#define isdirsep(x) ((x) == '/')
+#ifndef FUNCNAME_PATTERN
+# if defined(__hp9000s300) || defined(__NetBSD__) || defined(__BORLANDC__) || defined(__FreeBSD__) || defined(NeXT)
+#  define FUNCNAME_PATTERN "_Init_%.200s"
+# else
+#  define FUNCNAME_PATTERN "Init_%.200s"
+# endif
 #endif
 
-static size_t
-init_funcname_len(const char **file)
+static void
+init_funcname(buf, file)
+    char *buf, *file;
 {
-    const char *p = *file, *base, *dot = NULL;
+    char *p, *slash;
 
     /* Load the file as an object one */
-    for (base = p; *p; p++) { /* Find position of last '/' */
-	if (*p == '.' && !dot) dot = p;
-	if (isdirsep(*p)) base = p+1, dot = NULL;
+    for (p = file, slash = p-1; *p; p++) /* Find position of last '/' */
+	if (*p == '/') slash = p;
+
+    sprintf(buf, FUNCNAME_PATTERN, slash + 1);
+    for (p = buf; *p; p++) {         /* Delete suffix it it exists */
+	if (*p == '.') {
+	    *p = '\0'; break;
+	}
     }
-    *file = base;
-    /* Delete suffix if it exists */
-    return (dot ? dot : p) - base;
 }
 
-static const char funcname_prefix[sizeof(FUNCNAME_PREFIX) - 1] = FUNCNAME_PREFIX;
-
-#define init_funcname(buf, file) do {\
-    const char *base = (file);\
-    const size_t flen = init_funcname_len(&base);\
-    const size_t plen = sizeof(funcname_prefix);\
-    char *const tmp = ALLOCA_N(char, plen+flen+1);\
-    if (!tmp) {\
-	dln_memerror();\
-    }\
-    memcpy(tmp, funcname_prefix, plen);\
-    memcpy(tmp+plen, base, flen);\
-    tmp[plen+flen] = '\0';\
-    *(buf) = tmp;\
-} while (0)
-
 #ifdef USE_DLN_A_OUT
 
 #ifndef LIBC_NAME
@@ -162,15 +106,16 @@ static const char funcname_prefix[sizeof(FUNCNAME_PREFIX) - 1] = FUNCNAME_PREFIX
 static int dln_errno;
 
 #define DLN_ENOEXEC	ENOEXEC	/* Exec format error */
-#define DLN_ECONFL	1201	/* Symbol name conflict */
-#define DLN_ENOINIT	1202	/* No initializer given */
-#define DLN_EUNDEF	1203	/* Undefine symbol remains */
-#define DLN_ENOTLIB	1204	/* Not a library file */
-#define DLN_EBADLIB	1205	/* Malformed library file */
-#define DLN_EINIT	1206	/* Not initialized */
+#define DLN_ECONFL	201	/* Symbol name conflict */
+#define DLN_ENOINIT	202	/* No inititalizer given */
+#define DLN_EUNDEF	203	/* Undefine symbol remains */
+#define DLN_ENOTLIB	204	/* Not a library file */
+#define DLN_EBADLIB	205	/* Malformed library file */
+#define DLN_EINIT	206	/* Not initialized */
 
 static int dln_init_p = 0;
 
+#include "st.h"
 #include <ar.h>
 #include <a.out.h>
 #ifndef N_COMM
@@ -182,16 +127,16 @@ static int dln_init_p = 0;
 
 #define INVALID_OBJECT(h) (N_MAGIC(h) != OMAGIC)
 
-#include "ruby/util.h"
-#include "ruby/st.h"
-
 static st_table *sym_tbl;
 static st_table *undef_tbl;
 
 static int load_lib();
 
 static int
-load_header(int fd, struct exec *hdrp, long disp)
+load_header(fd, hdrp, disp)
+    int fd;
+    struct exec *hdrp;
+    long disp;
 {
     int size;
 
@@ -225,20 +170,20 @@ load_header(int fd, struct exec *hdrp, long disp)
 #define RELOC_TARGET_SIZE(r)		((r)->r_length)
 #endif
 
-#if defined(__sun) && defined(__sparc)
+#if defined(sun) && defined(sparc)
 /* Sparc (Sun 4) macros */
 #  undef relocation_info
 #  define relocation_info reloc_info_sparc
 #  define R_RIGHTSHIFT(r)	(reloc_r_rightshift[(r)->r_type])
 #  define R_BITSIZE(r) 		(reloc_r_bitsize[(r)->r_type])
 #  define R_LENGTH(r)		(reloc_r_length[(r)->r_type])
-static const int reloc_r_rightshift[] = {
+static int reloc_r_rightshift[] = {
   0, 0, 0, 0, 0, 0, 2, 2, 10, 0, 0, 0, 0, 0, 0,
 };
-static const int reloc_r_bitsize[] = {
+static int reloc_r_bitsize[] = {
   8, 16, 32, 8, 16, 32, 30, 22, 22, 22, 13, 10, 32, 32, 16,
 };
-static const int reloc_r_length[] = {
+static int reloc_r_length[] = {
   0, 1, 2, 0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 };
 #  define R_PCREL(r) \
@@ -261,7 +206,10 @@ static const int reloc_r_length[] = {
 #endif
 
 static struct relocation_info *
-load_reloc(int fd, struct exec *hdrp, long disp)
+load_reloc(fd, hdrp, disp)
+     int fd;
+     struct exec *hdrp;
+     long disp;
 {
     struct relocation_info *reloc;
     int size;
@@ -284,7 +232,10 @@ load_reloc(int fd, struct exec *hdrp, long disp)
 }
 
 static struct nlist *
-load_sym(int fd, struct exec *hdrp, long disp)
+load_sym(fd, hdrp, disp)
+    int fd;
+    struct exec *hdrp;
+    long disp;
 {
     struct nlist * buffer;
     struct nlist * sym;
@@ -325,7 +276,9 @@ load_sym(int fd, struct exec *hdrp, long disp)
 }
 
 static st_table *
-sym_hash(struct exec *hdrp, struct nlist *syms)
+sym_hash(hdrp, syms)
+    struct exec *hdrp;
+    struct nlist *syms;
 {
     st_table *tbl;
     struct nlist *sym = syms;
@@ -345,16 +298,17 @@ sym_hash(struct exec *hdrp, struct nlist *syms)
 }
 
 static int
-dln_init(const char *prog)
+dln_init(prog)
+    char *prog;
 {
-    char *file, fbuf[MAXPATHLEN];
+    char *file;
     int fd;
     struct exec hdr;
     struct nlist *syms;
 
     if (dln_init_p == 1) return 0;
 
-    file = dln_find_exe_r(prog, NULL, fbuf, sizeof(fbuf));
+    file = dln_find_exe(prog, NULL);
     if (file == NULL || (fd = open(file, O_RDONLY)) < 0) {
 	dln_errno = errno;
 	return -1;
@@ -386,7 +340,7 @@ dln_init(const char *prog)
 	if (c != '!') goto err_noexec;
 
 	p = buf;
-	/* skip forwarding spaces */
+	/* skip forwading spaces */
 	while (read(fd, &c, 1) == 1) {
 	    if (c == '\n') goto err_noexec;
 	    if (c != '\t' && c != ' ') {
@@ -398,10 +352,6 @@ dln_init(const char *prog)
 	while (read(fd, p, 1) == 1) {
 	    if (*p == '\n' || *p == '\t' || *p == ' ') break;
 	    p++;
-	    if (p-buf >= MAXPATHLEN) {
-		dln_errno = ENAMETOOLONG;
-		return -1;
-	    }
 	}
 	*p = '\0';
 
@@ -419,7 +369,11 @@ dln_init(const char *prog)
 }
 
 static long
-load_text_data(int fd, struct exec *hdrp, int bss, long disp)
+load_text_data(fd, hdrp, bss, disp)
+    int fd;
+    struct exec *hdrp;
+    int bss;
+    long disp;
 {
     int size;
     unsigned char* addr;
@@ -453,26 +407,27 @@ load_text_data(int fd, struct exec *hdrp, int bss, long disp)
 }
 
 static int
-undef_print(char *key, char *value)
+undef_print(key, value)
+    char *key, *value;
 {
     fprintf(stderr, "  %s\n", key);
     return ST_CONTINUE;
 }
 
 static void
-dln_print_undef(void)
+dln_print_undef()
 {
     fprintf(stderr, " Undefined symbols:\n");
     st_foreach(undef_tbl, undef_print, NULL);
 }
 
 static void
-dln_undefined(void)
+dln_undefined()
 {
     if (undef_tbl->num_entries > 0) {
 	fprintf(stderr, "dln: Calling undefined function\n");
 	dln_print_undef();
-	dln_exit(1);
+	rb_exit(1);
     }
 }
 
@@ -490,7 +445,10 @@ struct undef {
 
 static st_table *reloc_tbl = NULL;
 static void
-link_undef(const char *name, long base, struct relocation_info *reloc)
+link_undef(name, base, reloc)
+    char *name;
+    long base;
+    struct relocation_info *reloc;
 {
     static int u_no = 0;
     struct undef *obj;
@@ -518,16 +476,19 @@ link_undef(const char *name, long base, struct relocation_info *reloc)
 }
 
 struct reloc_arg {
-    const char *name;
+    char *name;
     long value;
 };
 
 static int
-reloc_undef(int no, struct undef *undef, struct reloc_arg *arg)
+reloc_undef(no, undef, arg)
+    int no;
+    struct undef *undef;
+    struct reloc_arg *arg;
 {
     int datum;
     char *address;
-#if defined(__sun) && defined(__sparc)
+#if defined(sun) && defined(sparc)
     unsigned int mask = 0;
 #endif
 
@@ -536,7 +497,7 @@ reloc_undef(int no, struct undef *undef, struct reloc_arg *arg)
     datum = arg->value;
 
     if (R_PCREL(&(undef->reloc))) datum -= undef->base;
-#if defined(__sun) && defined(__sparc)
+#if defined(sun) && defined(sparc)
     datum += undef->reloc.r_addend;
     datum >>= R_RIGHTSHIFT(&(undef->reloc));
     mask = (1 << R_BITSIZE(&(undef->reloc))) - 1;
@@ -584,7 +545,9 @@ reloc_undef(int no, struct undef *undef, struct reloc_arg *arg)
 }
 
 static void
-unlink_undef(const char *name, long value)
+unlink_undef(name, value)
+    char *name;
+    long value;
 {
     struct reloc_arg arg;
 
@@ -599,7 +562,10 @@ struct indr_data {
 };
 
 static int
-reloc_repl(int no, struct undef *undef, struct indr_data *data)
+reloc_repl(no, undef, data)
+    int no;
+    struct undef *undef;
+    struct indr_data *data;
 {
     if (strcmp(data->name0, undef->name) == 0) {
 	free(undef->name);
@@ -610,9 +576,12 @@ reloc_repl(int no, struct undef *undef, struct indr_data *data)
 #endif
 
 static int
-load_1(int fd, long disp, const char *need_init)
+load_1(fd, disp, need_init)
+    int fd;
+    long disp;
+    char *need_init;
 {
-    static const char *libc = LIBC_NAME;
+    static char *libc = LIBC_NAME;
     struct exec hdr;
     struct relocation_info *reloc = NULL;
     long block = 0;
@@ -621,6 +590,7 @@ load_1(int fd, long disp, const char *need_init)
     struct nlist *sym;
     struct nlist *end;
     int init_p = 0;
+    char buf[256];
 
     if (load_header(fd, &hdr, disp) == -1) return -1;
     if (INVALID_OBJECT(hdr)) {
@@ -629,12 +599,8 @@ load_1(int fd, long disp, const char *need_init)
     }
     reloc = load_reloc(fd, &hdr, disp);
     if (reloc == NULL) return -1;
-
     syms = load_sym(fd, &hdr, disp);
-    if (syms == NULL) {
-	free(reloc);
-	return -1;
-    }
+    if (syms == NULL) return -1;
 
     sym = syms;
     end = syms + (hdr.a_syms / sizeof(struct nlist));
@@ -647,7 +613,7 @@ load_1(int fd, long disp, const char *need_init)
 	    char *key = sym->n_un.n_name;
 
 	    if (st_lookup(sym_tbl, sym[1].n_un.n_name, &old_sym)) {
-		if (st_delete(undef_tbl, (st_data_t*)&key, NULL)) {
+		if (st_delete(undef_tbl, &key, NULL)) {
 		    unlink_undef(key, old_sym->n_value);
 		    free(key);
 		}
@@ -660,7 +626,7 @@ load_1(int fd, long disp, const char *need_init)
 		st_foreach(reloc_tbl, reloc_repl, &data);
 
 		st_insert(undef_tbl, strdup(sym[1].n_un.n_name), NULL);
-		if (st_delete(undef_tbl, (st_data_t*)&key, NULL)) {
+		if (st_delete(undef_tbl, &key, NULL)) {
 		    free(key);
 		}
 	    }
@@ -728,7 +694,7 @@ load_1(int fd, long disp, const char *need_init)
 	    }
 
 	    key = sym->n_un.n_name;
-	    if (st_delete(undef_tbl, (st_data_t*)&key, NULL) != 0) {
+	    if (st_delete(undef_tbl, &key, NULL) != 0) {
 		unlink_undef(key, sym->n_value);
 		free(key);
 	    }
@@ -760,11 +726,11 @@ load_1(int fd, long disp, const char *need_init)
 	while (rel < rel_end) {
 	    char *address = (char*)(rel->r_address + block);
 	    long datum = 0;
-#if defined(__sun) && defined(__sparc)
+#if defined(sun) && defined(sparc)
 	    unsigned int mask = 0;
 #endif
 
-	    if (rel >= rel_beg)
+	    if(rel >= rel_beg)
 		address += hdr.a_text;
 
 	    if (rel->r_extern) { /* Look it up in symbol-table */
@@ -781,7 +747,7 @@ load_1(int fd, long disp, const char *need_init)
 		}
 	    } /* end.. look it up */
 	    else { /* is static */
-		switch (R_SYMBOL(rel)) {
+		switch (R_SYMBOL(rel)) { 
 		  case N_TEXT:
 		  case N_DATA:
 		    datum = block;
@@ -795,7 +761,7 @@ load_1(int fd, long disp, const char *need_init)
 	    } /* end .. is static */
 	    if (R_PCREL(rel)) datum -= block;
 
-#if defined(__sun) && defined(__sparc)
+#if defined(sun) && defined(sparc)
 	    datum += rel->r_addend;
 	    datum >>= R_RIGHTSHIFT(rel);
 	    mask = (1 << R_BITSIZE(rel)) - 1;
@@ -837,19 +803,18 @@ load_1(int fd, long disp, const char *need_init)
     if (need_init) {
 	int len;
 	char **libs_to_be_linked = 0;
-	char *buf;
 
 	if (undef_tbl->num_entries > 0) {
 	    if (load_lib(libc) == -1) goto err_exit;
 	}
 
-	init_funcname(&buf, need_init);
+	init_funcname(buf, need_init);
 	len = strlen(buf);
 
 	for (sym = syms; sym<end; sym++) {
 	    char *name = sym->n_un.n_name;
 	    if (name[0] == '_' && sym->n_value >= block) {
-		if (strcmp(name+1, "dln_libs_to_be_linked") == 0) {
+		if (strcmp(name+1, "libs_to_be_linked") == 0) {
 		    libs_to_be_linked = (char**)sym->n_value;
 		}
 		else if (strcmp(name+1, buf) == 0) {
@@ -891,9 +856,12 @@ load_1(int fd, long disp, const char *need_init)
 
 static int target_offset;
 static int
-search_undef(const char *key, int value, st_table *lib_tbl)
+search_undef(key, value, lib_tbl)
+    char *key;
+    int value;
+    st_table *lib_tbl;
 {
-    long offset;
+    int offset;
 
     if (st_lookup(lib_tbl, key, &offset) == 0) return ST_CONTINUE;
     target_offset = offset;
@@ -901,17 +869,17 @@ search_undef(const char *key, int value, st_table *lib_tbl)
 }
 
 struct symdef {
-    int rb_str_index;
+    int str_index;
     int lib_offset;
 };
 
-const char *dln_librrb_ary_path = DLN_DEFAULT_LIB_PATH;
+char *dln_library_path = DLN_DEFAULT_LIB_PATH;
 
 static int
-load_lib(const char *lib)
+load_lib(lib)
+    char *lib;
 {
-    char *path, *file, fbuf[MAXPATHLEN];
-    char *envpath = 0;
+    char *path, *file;
     char armagic[SARMAG];
     int fd, size;
     struct ar_hdr ahdr;
@@ -929,22 +897,19 @@ load_lib(const char *lib)
     dln_errno = DLN_EBADLIB;
 
     if (lib[0] == '-' && lib[1] == 'l') {
-	long len = strlen(lib) + 4;
-	char *p = alloca(len);
-	snprintf(p, len, "lib%s.a", lib+2);
+	char *p = alloca(strlen(lib) + 4);
+	sprintf(p, "lib%s.a", lib+2);
 	lib = p;
     }
 
     /* library search path: */
     /* look for environment variable DLN_LIBRARY_PATH first. */
-    /* then variable dln_librrb_ary_path. */
+    /* then variable dln_library_path. */
     /* if path is still NULL, use "." for path. */
     path = getenv("DLN_LIBRARY_PATH");
-    if (path == NULL) path = dln_librrb_ary_path;
-    else path = envpath = strdup(path);
+    if (path == NULL) path = dln_library_path;
 
-    file = dln_find_file_r(lib, path, fbuf, sizeof(fbuf));
-    if (envpath) free(envpath);
+    file = dln_find_file(lib, path);
     fd = open(file, O_RDONLY);
     if (fd == -1) goto syserr;
     size = read(fd, armagic, SARMAG);
@@ -971,7 +936,7 @@ load_lib(const char *lib)
 	base = (struct symdef*)(data + 1);
 	name_base = (char*)(base + nsym) + sizeof(int);
 	while (nsym > 0) {
-	    char *name = name_base + base->rb_str_index;
+	    char *name = name_base + base->str_index;
 
 	    st_insert(lib_tbl, name, base->lib_offset + sizeof(ahdr));
 	    nsym--;
@@ -1048,7 +1013,8 @@ load_lib(const char *lib)
 }
 
 static int
-load(const char *file)
+load(file)
+    char *file;
 {
     int fd;
     int result;
@@ -1073,7 +1039,8 @@ load(const char *file)
 }
 
 void*
-dln_sym(const char *name)
+dln_sym(name)
+    char *name;
 {
     struct nlist *sym;
 
@@ -1085,64 +1052,35 @@ dln_sym(const char *name)
 #endif /* USE_DLN_A_OUT */
 
 #ifdef USE_DLN_DLOPEN
-# include <dlfcn.h>
+# ifdef __NetBSD__
+#  include <nlist.h>
+#  include <link.h>
+# else
+#  include <dlfcn.h>
+# endif
 #endif
 
-#ifdef __hpux
+#ifdef hpux
 #include <errno.h>
 #include "dl.h"
 #endif
 
-#if defined(_AIX)
+#ifdef _AIX
 #include <ctype.h>	/* for isdigit()	*/
 #include <errno.h>	/* for global errno	*/
 #include <sys/ldr.h>
 #endif
 
 #ifdef NeXT
-#if NS_TARGET_MAJOR < 4
-#include <mach-o/rld.h>
-#else
-#include <mach-o/dyld.h>
-#ifndef NSLINKMODULE_OPTION_BINDNOW
-#define NSLINKMODULE_OPTION_BINDNOW 1
-#endif
-#endif
-#else
-#ifdef MACOSX_DYLD
-#include <mach-o/dyld.h>
-#endif
+/*#include <mach-o/rld.h>*/
 #endif
 
 #ifdef _WIN32
 #include <windows.h>
-#include <imagehlp.h>
 #endif
 
-#ifdef _WIN32
-static const char *
-dln_strerror(char *message, size_t size)
-{
-    int error = GetLastError();
-    char *p = message;
-    size_t len = snprintf(message, size, "%d: ", error);
-
-#define format_message(sublang) FormatMessage(\
-	FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,	\
-	NULL, error, MAKELANGID(LANG_NEUTRAL, (sublang)),		\
-	message + len, size - len, NULL)
-    if (format_message(SUBLANG_ENGLISH_US) == 0)
-	format_message(SUBLANG_DEFAULT);
-    for (p = message + len; *p; p++) {
-	if (*p == '\n' || *p == '\r')
-	    *p = ' ';
-    }
-    return message;
-}
-#define dln_strerror() dln_strerror(message, sizeof message)
-#elif ! defined _AIX
-static const char *
-dln_strerror(void)
+static char *
+dln_strerror()
 {
 #ifdef USE_DLN_A_OUT
     char *strerror();
@@ -1151,7 +1089,7 @@ dln_strerror(void)
       case DLN_ECONFL:
 	return "Symbol name conflict";
       case DLN_ENOINIT:
-	return "No initializer given";
+	return "No inititalizer given";
       case DLN_EUNDEF:
 	return "Unresolved symbols";
       case DLN_ENOTLIB:
@@ -1168,161 +1106,122 @@ dln_strerror(void)
 #ifdef USE_DLN_DLOPEN
     return (char*)dlerror();
 #endif
-}
-#endif
 
-#if defined(_AIX)
-static void
-aix_loaderror(const char *pathname)
-{
-    char *message[1024], errbuf[1024];
-    int i;
-#define ERRBUF_APPEND(s) strlcat(errbuf, (s), sizeof(errbuf))
-    snprintf(errbuf, sizeof(errbuf), "load failed - %s. ", pathname);
-
-    if (loadquery(L_GETMESSAGES, &message[0], sizeof(message)) != -1) {
-	ERRBUF_APPEND("Please issue below command for detailed reasons:\n\t");
-	ERRBUF_APPEND("/usr/sbin/execerror ruby ");
-	for (i=0; message[i]; i++) {
-	    ERRBUF_APPEND("\"");
-	    ERRBUF_APPEND(message[i]);
-	    ERRBUF_APPEND("\" ");
-	}
-	ERRBUF_APPEND("\n");
-    }
-    else {
-	ERRBUF_APPEND(strerror(errno));
-	ERRBUF_APPEND("[loadquery failed]");
-    }
-    dln_loaderror("%s", errbuf);
-}
+#ifdef _WIN32
+    static char message[1024];
+    FormatMessage(
+	FORMAT_MESSAGE_FROM_SYSTEM,
+	NULL,
+	GetLastError(),
+	MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
+	message,
+	sizeof message,
+	NULL);
+
+    return message;
 #endif
+}
 
-#if defined _WIN32 && defined RUBY_EXPORT
-HANDLE rb_libruby_handle(void);
 
-static int
-rb_w32_check_imported(HMODULE ext, HMODULE mine)
+#ifdef _AIX
+static void
+aix_loaderror(char *pathname)
 {
-    ULONG size;
-    const IMAGE_IMPORT_DESCRIPTOR *desc;
-
-    desc = ImageDirectoryEntryToData(ext, TRUE, IMAGE_DIRECTORY_ENTRY_IMPORT, &size);
-    if (!desc) return 0;
-    while (desc->Name) {
-	PIMAGE_THUNK_DATA pint = (PIMAGE_THUNK_DATA)((char *)ext + desc->Characteristics);
-	PIMAGE_THUNK_DATA piat = (PIMAGE_THUNK_DATA)((char *)ext + desc->FirstThunk);
-	for (; piat->u1.Function; piat++, pint++) {
-	    static const char prefix[] = "rb_";
-	    PIMAGE_IMPORT_BY_NAME pii;
-	    const char *name;
-
-	    if (IMAGE_SNAP_BY_ORDINAL(pint->u1.Ordinal)) continue;
-	    pii = (PIMAGE_IMPORT_BY_NAME)((char *)ext + (size_t)pint->u1.AddressOfData);
-	    name = (const char *)pii->Name;
-	    if (strncmp(name, prefix, sizeof(prefix) - 1) == 0) {
-		FARPROC addr = GetProcAddress(mine, name);
-		if (addr) return (FARPROC)piat->u1.Function == addr;
-	    }
+    char *message[8], errbuf[1024];
+    int i,j;
+
+    struct errtab { 
+	int errno;
+	char *errstr;
+    } load_errtab[] = {
+	{L_ERROR_TOOMANY,	"too many errors, rest skipped."},
+	{L_ERROR_NOLIB,		"can't load library:"},
+	{L_ERROR_UNDEF,		"can't find symbol in library:"},
+	{L_ERROR_RLDBAD,
+	     "RLD index out of range or bad relocation type:"},
+	{L_ERROR_FORMAT,	"not a valid, executable xcoff file:"},
+	{L_ERROR_MEMBER,
+	     "file not an archive or does not contain requested member:"},
+	{L_ERROR_TYPE,		"symbol table mismatch:"},
+	{L_ERROR_ALIGN,		"text allignment in file is wrong."},
+	{L_ERROR_SYSTEM,	"System error:"},
+	{L_ERROR_ERRNO,		NULL}
+    };
+
+#define LOAD_ERRTAB_LEN	(sizeof(load_errtab)/sizeof(load_errtab[0]))
+#define ERRBUF_APPEND(s) strncat(errbuf, s, sizeof(errbuf)-strlen(errbuf)-1)
+
+    sprintf(errbuf, "load failed - %.200s ", pathname);
+
+    if (!loadquery(1, &message[0], sizeof(message))) 
+	ERRBUF_APPEND(strerror(errno));
+    for(i = 0; message[i] && *message[i]; i++) {
+	int nerr = atoi(message[i]);
+	for (j=0; j<LOAD_ERRTAB_LEN ; j++) {
+	    if (nerr == load_errtab[i].errno && load_errtab[i].errstr)
+		ERRBUF_APPEND(load_errtab[i].errstr);
 	}
-	desc++;
+	while (isdigit(*message[i])) message[i]++ ; 
+	ERRBUF_APPEND(message[i]);
+	ERRBUF_APPEND("\n");
     }
-    return 1;
-}
-#endif
-
-#if defined(DLN_NEEDS_ALT_SEPARATOR) && DLN_NEEDS_ALT_SEPARATOR
-#define translit_separator(src) do { \
-	char *tmp = ALLOCA_N(char, strlen(src) + 1), *p = tmp, c; \
-	do { \
-	    *p++ = ((c = *file++) == '/') ? DLN_NEEDS_ALT_SEPARATOR : c; \
-	} while (c); \
-	(src) = tmp; \
-    } while (0)
-#else
-#define translit_separator(str) (void)(str)
-#endif
-
-#ifdef USE_DLN_DLOPEN
-# include "ruby/internal/stdbool.h"
-# include "internal/warnings.h"
-COMPILER_WARNING_PUSH
-#if defined(__clang__) || GCC_VERSION_SINCE(4, 2, 0)
-COMPILER_WARNING_IGNORED(-Wpedantic)
-#endif
-static bool
-dln_incompatible_library_p(void *handle)
-{
-    void *ex = dlsym(handle, EXTERNAL_PREFIX"ruby_xmalloc");
-    void *const fp = (void *)ruby_xmalloc;
-    return ex && ex != fp;
+    errbuf[strlen(errbuf)-1] = '\0';	/* trim off last newline */
+    LoadError(errbuf);
+    return;
 }
-COMPILER_WARNING_POP
 #endif
 
-void*
-dln_load(const char *file)
+void
+dln_load(file)
+    char *file;
 {
-#if (defined _WIN32 || defined USE_DLN_DLOPEN) && defined RUBY_EXPORT
-    static const char incompatible[] = "incompatible library version";
-#endif
-#if !defined(_AIX) && !defined(NeXT)
-    const char *error = 0;
-#endif
-
-#if defined _WIN32
+#ifdef _WIN32
     HINSTANCE handle;
-    WCHAR *winfile;
-    char message[1024];
+    char winfile[255];
     void (*init_fct)();
-    char *buf;
+    char buf[MAXPATHLEN];
 
     /* Load the file as an object one */
-    init_funcname(&buf, file);
+    init_funcname(buf, file);
 
-    /* Convert the file path to wide char */
-    winfile = rb_w32_mbstr_to_wstr(CP_UTF8, file, -1, NULL);
-    if (!winfile) {
-	dln_memerror();
-    }
+#ifdef __CYGWIN32__
+    cygwin32_conv_to_win32_path(file, winfile);
+#else
+    strcpy(winfile, file);
+#endif
 
     /* Load file */
-    handle = LoadLibraryW(winfile);
-    free(winfile);
-
-    if (!handle) {
-	error = dln_strerror();
+    if ((handle =
+	LoadLibraryExA(winfile, NULL, LOAD_WITH_ALTERED_SEARCH_PATH)) == NULL) {
+        printf("LoadLibraryExA\n");
 	goto failed;
     }
 
-#if defined _WIN32 && defined RUBY_EXPORT
-    if (!rb_w32_check_imported(handle, rb_libruby_handle())) {
-	FreeLibrary(handle);
-	error = incompatible;
-	goto failed;
-    }
+#ifdef __CYGWIN32__
+    init_fct = (void(*)())GetProcAddress(handle, "impure_setup");
+
+    if (init_fct)
+	init_fct(_impure_ptr);
 #endif
 
     if ((init_fct = (void(*)())GetProcAddress(handle, buf)) == NULL) {
-	dln_loaderror("%s - %s\n%s", dln_strerror(), buf, file);
+        printf("GetProcAddress %s\n", buf);
+	goto failed;
     }
-
     /* Call the init code */
     (*init_fct)();
-    return handle;
+    return;
 #else
 #ifdef USE_DLN_A_OUT
     if (load(file) == -1) {
-	error = dln_strerror();
 	goto failed;
     }
-    return 0;
+    return;
 #else
 
-    char *buf;
+    char buf[MAXPATHLEN];
     /* Load the file as an object one */
-    init_funcname(&buf, file);
-    translit_separator(file);
+    init_funcname(buf, file);
 
 #ifdef USE_DLN_DLOPEN
 #define DLN_DEFINED
@@ -1330,54 +1229,28 @@ dln_load(const char *file)
 	void *handle;
 	void (*init_fct)();
 
-#ifndef RTLD_LAZY
-# define RTLD_LAZY 1
-#endif
-#ifdef __INTERIX
-# undef RTLD_GLOBAL
-#endif
-#ifndef RTLD_GLOBAL
-# define RTLD_GLOBAL 0
-#endif
+# ifndef RTLD_LAZY
+#  define RTLD_LAZY 1
+# endif
+# ifndef RTLD_GLOBAL
+#  define RTLD_GLOBAL 0
+# endif
 
 	/* Load file */
-	if ((handle = (void*)dlopen(file, RTLD_LAZY|RTLD_GLOBAL)) == NULL) {
-	    error = dln_strerror();
+	if ((handle = dlopen(file, RTLD_LAZY|RTLD_GLOBAL)) == NULL) {
 	    goto failed;
 	}
-# if defined RUBY_EXPORT
-	{
-	    if (dln_incompatible_library_p(handle)) {
-
-#   if defined __APPLE__ && \
-    defined(MAC_OS_X_VERSION_MIN_REQUIRED) && \
-    (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_11)
-		/* dlclose() segfaults */
-		rb_fatal("%s - %s", incompatible, file);
-#   else
-		dlclose(handle);
-		error = incompatible;
-		goto failed;
-#   endif
-	    }
-	}
-# endif
 
-	init_fct = (void(*)())(VALUE)dlsym(handle, buf);
-	if (init_fct == NULL) {
-	    const size_t errlen = strlen(error = dln_strerror()) + 1;
-	    error = memcpy(ALLOCA_N(char, errlen), error, errlen);
-	    dlclose(handle);
+	if ((init_fct = (void(*)())dlsym(handle, buf)) == NULL) {
 	    goto failed;
 	}
 	/* Call the init code */
 	(*init_fct)();
-
-	return handle;
+	return;
     }
 #endif /* USE_DLN_DLOPEN */
 
-#ifdef __hpux
+#ifdef hpux
 #define DLN_DEFINED
     {
 	shl_t lib = NULL;
@@ -1388,87 +1261,271 @@ dln_load(const char *file)
 	lib = shl_load(file, flags, 0);
 	if (lib == NULL) {
 	    extern int errno;
-	    dln_loaderror("%s - %s", strerror(errno), file);
+	    LoadError("%s - %s", strerror(errno), file);
 	}
 	shl_findsym(&lib, buf, TYPE_PROCEDURE, (void*)&init_fct);
 	if (init_fct == NULL) {
 	    shl_findsym(&lib, buf, TYPE_UNDEFINED, (void*)&init_fct);
 	    if (init_fct == NULL) {
 		errno = ENOSYM;
-		dln_loaderror("%s - %s", strerror(ENOSYM), file);
+		LoadError("%s - %s", strerror(ENOSYM), file);
 	    }
 	}
 	(*init_fct)();
-	return (void*)lib;
+	return;
     }
 #endif /* hpux */
 
-#if defined(_AIX)
+#ifdef _AIX
 #define DLN_DEFINED
     {
 	void (*init_fct)();
 
-	init_fct = (void(*)())load((char*)file, 1, 0);
+	init_fct = (void(*)())load(file, 1, 0);
 	if (init_fct == NULL) {
 	    aix_loaderror(file);
 	}
-	if (loadbind(0, (void*)dln_load, (void*)init_fct) == -1) {
-	    aix_loaderror(file);
-	}
 	(*init_fct)();
-	return (void*)init_fct;
+	return;
     }
 #endif /* _AIX */
 
-#if defined(MACOSX_DYLD)
+#ifdef NeXT
 #define DLN_DEFINED
 /*----------------------------------------------------
    By SHIROYAMA Takayuki Psi@fortune.nest.or.jp
-
+ 
    Special Thanks...
     Yu tomoak-i@is.aist-nara.ac.jp,
     Mi hisho@tasihara.nest.or.jp,
-    sunshine@sunshineco.com,
     and... Miss ARAI Akino(^^;)
  ----------------------------------------------------*/
     {
-	int dyld_result;
-	NSObjectFileImage obj_file; /* handle, but not use it */
-	/* "file" is module file name .
-	   "buf" is pointer to initial function name with "_" . */
+	unsigned long init_address;
+	char *object_files[2] = {NULL, NULL};
 
 	void (*init_fct)();
-
-
-	dyld_result = NSCreateObjectFileImageFromFile(file, &obj_file);
-
-	if (dyld_result != NSObjectFileImageSuccess) {
-	    dln_loaderror("Failed to load %.200s", file);
+	
+	object_files[0] = file;
+	
+	/* Load object file, if return value ==0 ,  load failed*/
+	if(rld_load(NULL, NULL, object_files, NULL) == 0) {
+	    LoadError("Failed to load %.200s", file);
 	}
 
-	NSLinkModule(obj_file, file, NSLINKMODULE_OPTION_BINDNOW);
-
 	/* lookup the initial function */
-	if (!NSIsSymbolNameDefined(buf)) {
-	    dln_loaderror("Failed to lookup Init function %.200s",file);
+	if(rld_lookup(NULL, buf, &init_address) == 0) {
+	    LoadError("Failed to lookup Init function %.200s",file);
 	}
-	init_fct = NSAddressOfSymbol(NSLookupAndBindSymbol(buf));
-	(*init_fct)();
 
-	return (void*)init_fct;
+	 /* Cannot call *init_address directory, so copy this value to
+	    funtion pointer */
+
+	init_fct = (void(*)())init_address;
+	(*init_fct)();
+	return ;
     }
 #endif
 
 #ifndef DLN_DEFINED
-    dln_notimplement();
+    rb_notimplement("dynamic link not supported");
 #endif
 
 #endif /* USE_DLN_A_OUT */
 #endif
 #if !defined(_AIX) && !defined(NeXT)
   failed:
-    dln_loaderror("%s - %s", error, file);
+    LoadError("%s - %s", dln_strerror(), file);
 #endif
+}
+
+static char *dln_find_1();
+
+char *
+dln_find_exe(fname, path)
+    char *fname;
+    char *path;
+{
+#if defined(__human68k__)
+    if (!path)
+	path = getenv("path");
+    if (!path)
+	path = "/usr/local/bin;/usr/ucb;/usr/bin;/bin;.";
+#else
+    if (!path) path = getenv("PATH");
+    if (!path) path = "/usr/local/bin:/usr/ucb:/usr/bin:/bin:.";
+#endif
+    return dln_find_1(fname, path, 1);
+}
+
+char *
+dln_find_file(fname, path)
+    char *fname;
+    char *path;
+{
+    if (!path) path = ".";
+    return dln_find_1(fname, path, 0);
+}
+
+#if defined(__CYGWIN32__)
+char *
+conv_to_posix_path(win32, posix)
+    char *win32;
+    char *posix;
+{
+    char *first = win32;
+    char *p = win32;
+    char *dst = posix;
+
+    for (p = win32; *p; p++)
+	if (*p == ';') {
+	    *p = 0;
+	    cygwin32_conv_to_posix_path(first, posix);
+	    posix += strlen(posix);
+	    *posix++ = ':';
+	    first = p + 1;
+	    *p = ';';
+	}
+    cygwin32_conv_to_posix_path(first, posix);
+    return dst;
+}
+#endif
+
+static char fbuf[MAXPATHLEN];
 
-    return 0;			/* dummy return */
+static char *
+dln_find_1(fname, path, exe_flag)
+    char *fname;
+    char *path;
+    int exe_flag;		/* non 0 if looking for executable. */
+{
+    register char *dp;
+    register char *ep;
+    register char *bp;
+    struct stat st;
+
+#if defined(__CYGWIN32__)
+    char rubypath[MAXPATHLEN];
+    conv_to_posix_path(path, rubypath);
+    path = rubypath;
+#endif
+    if (fname[0] == '/') return fname;
+    if (strncmp("./", fname, 2) == 0 || strncmp("../", fname, 3) == 0)
+      return fname;
+#if defined(MSDOS) || defined(NT) || defined(__human68k__)
+    if (fname[0] == '\\') return fname;
+    if (strlen(fname) > 2 && fname[1] == ':') return fname;
+    if (strncmp(".\\", fname, 2) == 0 || strncmp("..\\", fname, 3) == 0)
+      return fname;
+#endif
+
+    for (dp = path;; dp = ++ep) {
+	register int l;
+	int i;
+	int fspace;
+
+	/* extract a component */
+#if !defined(MSDOS)  && !defined(NT) && !defined(__human68k__)
+	ep = strchr(dp, ':');
+#else
+	ep = strchr(dp, ';');
+#endif
+	if (ep == NULL)
+	    ep = dp+strlen(dp);
+
+	/* find the length of that component */
+	l = ep - dp;
+	bp = fbuf;
+	fspace = sizeof fbuf - 2;
+	if (l > 0) {
+	    /*
+	    **	If the length of the component is zero length,
+	    **	start from the current directory.  If the
+	    **	component begins with "~", start from the
+	    **	user's $HOME environment variable.  Otherwise
+	    **	take the path literally.
+	    */
+
+	    if (*dp == '~' && (l == 1 ||
+#if defined(MSDOS) || defined(NT) || defined(__human68k__)
+			       dp[1] == '\\' || 
+#endif
+			       dp[1] == '/')) {
+		char *home;
+
+		home = getenv("HOME");
+		if (home != NULL) {
+		    i = strlen(home);
+		    if ((fspace -= i) < 0)
+			goto toolong;
+		    memcpy(bp, home, i);
+		    bp += i;
+		}
+		dp++;
+		l--;
+	    }
+	    if (l > 0) {
+		if ((fspace -= l) < 0)
+		    goto toolong;
+		memcpy(bp, dp, l);
+		bp += l;
+	    }
+
+	    /* add a "/" between directory and filename */
+	    if (ep[-1] != '/')
+		*bp++ = '/';
+	}
+
+	/* now append the file name */
+	i = strlen(fname);
+	if ((fspace -= i) < 0) {
+	  toolong:
+	    fprintf(stderr, "openpath: pathname too long (ignored)\n");
+	    *bp = '\0';
+	    fprintf(stderr, "\tDirectory \"%s\"\n", fbuf);
+	    fprintf(stderr, "\tFile \"%s\"\n", fname);
+	    continue;
+	}
+	memcpy(bp, fname, i + 1);
+
+	if (stat(fbuf, &st) == 0) {
+	    if (exe_flag == 0) return fbuf;
+	    /* looking for executable */
+	    if (eaccess(fbuf, X_OK) == 0) return fbuf;
+	}
+#if defined(MSDOS) || defined(NT) || defined(__human68k__)
+	if (exe_flag) {
+	    static const char *extension[] = {
+#if defined(MSDOS)
+		".com", ".exe", ".bat",
+#if defined(DJGPP)
+		".btm", ".sh", ".ksh", ".pl", ".sed",
+#endif
+#else
+		".r", ".R", ".x", ".X", ".bat", ".BAT",
+#endif
+		(char *) NULL
+	    };
+	    int j;
+
+	    for (j = 0; extension[j]; j++) {
+		if (fspace < strlen(extension[j])) {
+		    fprintf(stderr, "openpath: pathname too long (ignored)\n");
+		    fprintf(stderr, "\tDirectory \"%.*s\"\n", (int) (bp - fbuf), fbuf);
+		    fprintf(stderr, "\tFile \"%s%s\"\n", fname, extension[j]);
+		    continue;
+		}
+		strcpy(bp + i, extension[j]);
+		if (stat(fbuf, &st) == 0)
+		    return fbuf;
+	    }
+	}
+#endif /* MSDOS or NT or __human68k__ */
+	/* if not, and no other alternatives, life is bleak */
+	if (*ep == '\0') {
+	    return NULL;
+	}
+
+	/* otherwise try the next component in the search path */
+    }
 }
diff --git a/dln.h b/dln.h
index 99106fd22b..7af1f63a9d 100644
--- a/dln.h
+++ b/dln.h
@@ -1,36 +1,30 @@
-#ifndef DLN_H
-#define DLN_H
-/**********************************************************************
+/************************************************
 
   dln.h -
 
   $Author$
+  $Revision$
+  $Date$
   created at: Wed Jan 19 16:53:09 JST 1994
 
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
-
-**********************************************************************/
-
-#include "ruby/defines.h"       /* for RUBY_SYMBOL_EXPORT_BEGIN */
-
-RUBY_SYMBOL_EXPORT_BEGIN
+************************************************/
+#ifndef DLN_H
+#define DLN_H
 
-#ifndef DLN_FIND_EXTRA_ARG
-#define DLN_FIND_EXTRA_ARG
+#ifndef _
+#ifndef __STDC__
+# define _(args) ()
+#else
+# define _(args) args
 #endif
-#ifndef DLN_FIND_EXTRA_ARG_DECL
-#define DLN_FIND_EXTRA_ARG_DECL
 #endif
 
-char *dln_find_exe_r(const char*,const char*,char*,size_t DLN_FIND_EXTRA_ARG_DECL);
-char *dln_find_file_r(const char*,const char*,char*,size_t DLN_FIND_EXTRA_ARG_DECL);
+char *dln_find_exe _((char*,char*));
+char *dln_find_file _((char*,char*));
 
 #ifdef USE_DLN_A_OUT
 extern char *dln_argv0;
 #endif
 
-void *dln_load(const char*);
-
-RUBY_SYMBOL_EXPORT_END
-
+void dln_load _((char*));
 #endif
diff --git a/dln_find.c b/dln_find.c
deleted file mode 100644
index ca62441631..0000000000
--- a/dln_find.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/**********************************************************************
-
-  dln_find.c -
-
-  $Author$
-  created at: Tue Jan 18 17:05:06 JST 1994
-
-  Copyright (C) 1993-2007 Yukihiro Matsumoto
-
-**********************************************************************/
-
-#ifdef RUBY_EXPORT
-#include "ruby/ruby.h"
-#define dln_warning rb_warning
-#define dln_warning_arg
-#else
-#define dln_warning fprintf
-#define dln_warning_arg stderr,
-#endif
-#include "dln.h"
-
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-
-#ifdef USE_DLN_A_OUT
-char *dln_argv0;
-#endif
-
-#if defined(HAVE_ALLOCA_H)
-#include <alloca.h>
-#endif
-
-#ifdef HAVE_STRING_H
-# include <string.h>
-#else
-# include <strings.h>
-#endif
-
-#include <stdio.h>
-#if defined(_WIN32)
-#include "missing/file.h"
-#endif
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#ifndef S_ISDIR
-#   define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
-#endif
-
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#if !defined(_WIN32) && !HAVE_DECL_GETENV
-char *getenv();
-#endif
-
-static char *dln_find_1(const char *fname, const char *path, char *buf, size_t size, int exe_flag
-			DLN_FIND_EXTRA_ARG_DECL);
-
-char *
-dln_find_exe_r(const char *fname, const char *path, char *buf, size_t size
-	       DLN_FIND_EXTRA_ARG_DECL)
-{
-    char *envpath = 0;
-
-    if (!path) {
-	path = getenv(PATH_ENV);
-	if (path) path = envpath = strdup(path);
-    }
-
-    if (!path) {
-	path =
-	    "/usr/local/bin" PATH_SEP
-	    "/usr/ucb" PATH_SEP
-	    "/usr/bin" PATH_SEP
-	    "/bin" PATH_SEP
-	    ".";
-    }
-    buf = dln_find_1(fname, path, buf, size, 1 DLN_FIND_EXTRA_ARG);
-    if (envpath) free(envpath);
-    return buf;
-}
-
-char *
-dln_find_file_r(const char *fname, const char *path, char *buf, size_t size
-		DLN_FIND_EXTRA_ARG_DECL)
-{
-    if (!path) path = ".";
-    return dln_find_1(fname, path, buf, size, 0 DLN_FIND_EXTRA_ARG);
-}
-
-static char *
-dln_find_1(const char *fname, const char *path, char *fbuf, size_t size,
-	   int exe_flag /* non 0 if looking for executable. */
-	   DLN_FIND_EXTRA_ARG_DECL)
-{
-    register const char *dp;
-    register const char *ep;
-    register char *bp;
-    struct stat st;
-    size_t i, fnlen, fspace;
-#ifdef DOSISH
-    static const char extension[][5] = {
-	EXECUTABLE_EXTS,
-    };
-    size_t j;
-    int is_abs = 0, has_path = 0;
-    const char *ext = 0;
-#endif
-    const char *p = fname;
-
-    static const char pathname_too_long[] = "openpath: pathname too long (ignored)\n\
-\tDirectory \"%.*s\"%s\n\tFile \"%.*s\"%s\n";
-#define PATHNAME_TOO_LONG() dln_warning(dln_warning_arg pathname_too_long, \
-					((bp - fbuf) > 100 ? 100 : (int)(bp - fbuf)), fbuf, \
-					((bp - fbuf) > 100 ? "..." : ""), \
-					(fnlen > 100 ? 100 : (int)fnlen), fname, \
-					(fnlen > 100 ? "..." : ""))
-
-#define RETURN_IF(expr) if (expr) return (char *)fname;
-
-    RETURN_IF(!fname);
-    fnlen = strlen(fname);
-    if (fnlen >= size) {
-	dln_warning(dln_warning_arg
-		    "openpath: pathname too long (ignored)\n\tFile \"%.*s\"%s\n",
-		    (fnlen > 100 ? 100 : (int)fnlen), fname,
-		    (fnlen > 100 ? "..." : ""));
-	return NULL;
-    }
-#ifdef DOSISH
-# ifndef CharNext
-# define CharNext(p) ((p)+1)
-# endif
-# ifdef DOSISH_DRIVE_LETTER
-    if (((p[0] | 0x20) - 'a') < 26  && p[1] == ':') {
-	p += 2;
-	is_abs = 1;
-    }
-# endif
-    switch (*p) {
-      case '/': case '\\':
-	is_abs = 1;
-	p++;
-    }
-    has_path = is_abs;
-    while (*p) {
-	switch (*p) {
-	  case '/': case '\\':
-	    has_path = 1;
-	    ext = 0;
-	    p++;
-	    break;
-	  case '.':
-	    ext = p;
-	    p++;
-	    break;
-	  default:
-	    p = CharNext(p);
-	}
-    }
-    if (ext) {
-	for (j = 0; STRCASECMP(ext, extension[j]); ) {
-	    if (++j == sizeof(extension) / sizeof(extension[0])) {
-		ext = 0;
-		break;
-	    }
-	}
-    }
-    ep = bp = 0;
-    if (!exe_flag) {
-	RETURN_IF(is_abs);
-    }
-    else if (has_path) {
-	RETURN_IF(ext);
-	i = p - fname;
-	if (i + 1 > size) goto toolong;
-	fspace = size - i - 1;
-	bp = fbuf;
-	ep = p;
-	memcpy(fbuf, fname, i + 1);
-	goto needs_extension;
-    }
-    p = fname;
-#endif
-
-    if (*p == '.' && *++p == '.') ++p;
-    RETURN_IF(*p == '/');
-    RETURN_IF(exe_flag && strchr(fname, '/'));
-
-#undef RETURN_IF
-
-    for (dp = path;; dp = ++ep) {
-	register size_t l;
-
-	/* extract a component */
-	ep = strchr(dp, PATH_SEP[0]);
-	if (ep == NULL)
-	    ep = dp+strlen(dp);
-
-	/* find the length of that component */
-	l = ep - dp;
-	bp = fbuf;
-	fspace = size - 2;
-	if (l > 0) {
-	    /*
-	    **	If the length of the component is zero length,
-	    **	start from the current directory.  If the
-	    **	component begins with "~", start from the
-	    **	user's $HOME environment variable.  Otherwise
-	    **	take the path literally.
-	    */
-
-	    if (*dp == '~' && (l == 1 ||
-#if defined(DOSISH)
-			       dp[1] == '\\' ||
-#endif
-			       dp[1] == '/')) {
-		char *home;
-
-		home = getenv("HOME");
-		if (home != NULL) {
-		    i = strlen(home);
-		    if (fspace < i)
-			goto toolong;
-		    fspace -= i;
-		    memcpy(bp, home, i);
-		    bp += i;
-		}
-		dp++;
-		l--;
-	    }
-	    if (l > 0) {
-		if (fspace < l)
-		    goto toolong;
-		fspace -= l;
-		memcpy(bp, dp, l);
-		bp += l;
-	    }
-
-	    /* add a "/" between directory and filename */
-	    if (ep[-1] != '/')
-		*bp++ = '/';
-	}
-
-	/* now append the file name */
-	i = fnlen;
-	if (fspace < i) {
-            goto toolong;
-	}
-	fspace -= i;
-	memcpy(bp, fname, i + 1);
-
-#if defined(DOSISH)
-	if (exe_flag && !ext) {
-            goto needs_extension;
-	}
-#endif
-
-#ifndef S_ISREG
-# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
-#endif
-	if (stat(fbuf, &st) == 0 && S_ISREG(st.st_mode)) {
-	    if (exe_flag == 0) return fbuf;
-	    /* looking for executable */
-	    if (eaccess(fbuf, X_OK) == 0) return fbuf;
-	}
-      next:
-	/* if not, and no other alternatives, life is bleak */
-	if (*ep == '\0') {
-	    return NULL;
-	}
-        continue;
-
-      toolong:
-        PATHNAME_TOO_LONG();
-        goto next;
-
-#if defined(DOSISH)
-      needs_extension:
-        for (j = 0; j < sizeof(extension) / sizeof(extension[0]); j++) {
-            if (fspace < strlen(extension[j])) {
-                PATHNAME_TOO_LONG();
-                continue;
-            }
-            strlcpy(bp + i, extension[j], fspace);
-            if (stat(fbuf, &st) == 0)
-                return fbuf;
-        }
-        goto next;
-#endif
-	/* otherwise try the next component in the search path */
-    }
-}
diff --git a/dmydln.c b/dmydln.c
deleted file mode 100644
index d05cda0b8e..0000000000
--- a/dmydln.c
+++ /dev/null
@@ -1,10 +0,0 @@
-#include "ruby/ruby.h"
-
-NORETURN(void *dln_load(const char *));
-void*
-dln_load(const char *file)
-{
-    rb_loaderror("this executable file can't load extension libraries");
-
-    UNREACHABLE_RETURN(NULL);
-}
diff --git a/dmyenc.c b/dmyenc.c
deleted file mode 100644
index 7e006e826c..0000000000
--- a/dmyenc.c
+++ /dev/null
@@ -1,10 +0,0 @@
-#define require(name) ruby_require_internal(name, (unsigned int)sizeof(name)-1)
-int ruby_require_internal(const char *, int);
-
-void
-Init_enc(void)
-{
-    if (require("enc/encdb.so") == 1) {
-	require("enc/trans/transdb.so");
-    }
-}
diff --git a/dmyext.c b/dmyext.c
index 4d273f7faf..4120d493c3 100644
--- a/dmyext.c
+++ b/dmyext.c
@@ -1,4 +1,4 @@
 void
-Init_ext(void)
+Init_ext()
 {
 }
diff --git a/doc/.document b/doc/.document
deleted file mode 100644
index ad17aada6d..0000000000
--- a/doc/.document
+++ /dev/null
@@ -1,4 +0,0 @@
-*.md
-*.rdoc
-NEWS-*
-syntax
diff --git a/doc/ChangeLog-0.06_to_0.52 b/doc/ChangeLog-0.06_to_0.52
deleted file mode 100644
index 63826081b3..0000000000
--- a/doc/ChangeLog-0.06_to_0.52
+++ /dev/null
@@ -1,1147 +0,0 @@
-Fri Oct 14 13:22:18 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.52: ……�ん�����.
-
-	* eval.c(rb_call): return�処��間�������, マシン�よ��
-	  �return�関数を終了�る�����toplevel����抜����.
-
-	* object.c: Builtinクラスを新設. 組�込�関数をKernel�ら移��.
-	  nil�組�込�関数を�解�る�トラブル�元��る.
-
-	* dbm.c: Dict��様�each�[key,value]を返�よ��.
-
-	* version 0.51
-
-Thu Oct 13 12:13:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(SETUP_ARGS): 付加演算���列���時���列�変��る.
-
-	* parse.y: 括弧���メソッド呼�出��も`*'�よる付加引数�使�る
-	  よ����. ���, 通常引数�一�も��場��乗算演算��区別�
-	  ������, 必�括弧�必�.
-
-Wed Oct 12 10:09:07 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(rb_call): キャッシュ�計算をinline化. キャッシュミス��
-	  れ�関数呼�出��メソッドを検索�る. methods.c������.
-
-	* eval.c(rb_eval): ローカル変数用�領域をalloca()�るよ��変更.
-	  サイズ�変更�必���れ�改��malloc()�るよ��.
-
-	* parse.y: error recovery�際�lex_stateを更新����よ��.
-
-Tue Oct 11 17:10:46 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* socket.c(for_fd): ファイル記述�(Fixnum)�らソケットインスタンス
-	  を得るメソッド. ����inetd�ら起動�れ�サー��標準入出力�
-	  ソケット�作を行�����使�. ��りSocket.for_fd($stdin)�標
-	  準入力�対応�るソケットオブジェクト�得られる.
-
-	* io.c(to_i): IOクラス�インスタンスを整数�変��る���ファイル
-	  記述�を返�よ��.
-
-	* numeric.c(num2int): to_iメソッドを使����る�り整数�変��る.
-	  以��num2fix���全��オブジェクト�対��to_iメソッドを�用
-	  ����.
-
-	* sprintf.c(Fsprintf): 整数表示�際, オブジェクトを��る�り整数
-	  �変��るよ��(to_iメソッドを使�).
-
-Fri Oct  7 14:06:32 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(Fcaller): 必�性�よ�分�ら����ドキュメント�ら削除.
-	  将�デ�ッガを作る時�復活��よ�.
-
-	* eval.c(rb_call): C�記述�れ�メソッド呼�出���環境をスタック
-	  �セーブ������よ��高速化.
-
-Wed Oct  5 15:00:58 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby.h: 一時env.h�移動���Qself�定義を復活. ���今回�関数
-	  ���実�(env.h��変数����定義���る).
-
-	* ruby.h: TRUE�syntax error��ら��よ�#undefを追加.
-
-	* eval.c(rb_eval): thread化�挑戦���, 失敗(速��ら����).
-	  �, Scoping���無駄�コード�削除�メソッド呼�出��引数セッ
-	  ト�inline化�若干�高速化を実���. 副作用���, argc, argv形
-	  ��関数呼�出��仕様�変化��(argv�selfを�������).
-
-	* eval.c(rb_call): メソッド呼�出��高速化.
-
-Tue Oct  4 11:40:53 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby-mode.el: 修飾��対応��.
-
-	* parse.y: 多�代入�restを���. ��機能を使��optional引数�
-	  解��簡����る(��).
-
-	* pack.c(unpack): uuencode形��decode�際�文字列�長��間���
-	  ��.
-
-Mon Oct  3 15:58:41 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* file.c(type): ファイルタイプを文字列�返�メソッド.
-
-Fri Sep 30 11:36:07 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* object.c: デフォルト�真�値��る%TRUE�値を1(Fixnum)�らt�変
-	  更��. to_s�文字列�変���時�も`t'�表示�れる. 更���込
-	  ん�`t'を予約語���lisp�よ���よ���も����, ����
-	  �決心������. 一文字�ローカル変数���り使����気��
-	  る��….
-
-	* array.c,dict.c: equalを�定義���るクラス�, hashを正��定義
-	  ��.
-
-Wed Sep 28 23:30:28 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c(Ffail): 今��fail�カー�ルクラス�メソッド�����,
-	  構文�組�込ん�. ��変更�よ��, 1)`fail'�予約語��り, ロー
-	  カル変数�用�る����������. 2)`fail'�体�例外を発生�
-	  るよ�����. 3)fail�メソッド����������定義�れる�
-	  能性������.
-
-	* dic.c, dbm.c(indexes): Array�indexes��様�機能を��メソッド
-	  を追加.
-
-	* array.c(indexes): 引数をインデックス��る�素��列を返�. 整数
-	  ��列を引数��る時��引数��素をインデックス��る�素��列
-	  を返�.
-
-Mon Sep 19 13:42:31 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* array.c(aset): 部分�列�対�る代入��列以外�オブジェクト�指
-	  定�れ�場��多�代入���ルール��列化�るよ����.
-
-	* io.c(print): 引数���与�られ��オブジェクト�print_onメッセー
-	  ジを与�るよ��. 実行速度���る�柔軟性�増�.
-
-Fri Sep 16 14:59:18 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* glob.c: ワイルドカード�導入. bash�使�れ��るGNU�globルー�
-	  ンを�用��.
-
-Mon Sep 12 18:36:58 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(value_expr): ��nil�時�対応.
-
-	* class.c: ICLASS�class�必�Class/Moduleを指�よ��.
-
-Tue Sep  6 16:23:28 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* re.c:	正�表�内�「\数字�形��指定��るよ��.
-
-	* parse.y:「do expr using var ... end�形�������. 寂��気
-	  も�る. *BACKWARD INCOMPATIBILITY*
-
-Mon Sep  5 10:59:01 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* numeric.c(next): Numericクラス�もnextを�供.
-
-	* string.c(upto): uptoを�供.
-
-	* range.c(each): nextを使��インタフェース�らuptoを使�よ��変
-	  更��. ��方�一��メソッド�処�を����行�������る.
-
-Fri Sep  2 15:25:39 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* dict.c(each): 戻り値を[key, value]�ペア�変更. 今���each�
-	  each_value���残る. *BACKWARD INCOMPATIBILITY*
-
-Thu Sep  1 10:49:04 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* �功��(特別�戻り値を����)システムコール�`0'を返�よ��.
-
-Wed Aug 31 00:26:51 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* string.c: �ェックサムを得るメソッド`sum'を作��.
-
-	* class.c(include_class_new): ICLASS�classをも��クラス���.
-	  gc�際�元クラスをマーク�る必���る��, フィールドを増や�余
-	  地�無���, classフィールドを�用��. ��見�り�間����
-	  �, ICLASS�インスタンス�メッセージを�る事��れ�, ����動
-	  作を�る���.
-
-	* eval.c(masign): �(a,b = nil)�値を[nil]�らnil�変更��.
-
-Mon Aug 29 11:56:09 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* class.c: rb_define_mfuncを無���, メタクラス�モジュールをイン
-	  クルード�るよ����.
-
-	* error.c(yyerror): ��行�複数�syntax errorをリ�ート���よ�
-	  ���.
-
-	* file.c: FileTestモジュール�ファイルテストメソッドを分離��.
-
-	* parse.y: 演算�を指定�る時�lex_stateを正��設定��.
-
-Sat Aug 27 01:23:34 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y: if/while���複��をprimary�移動��. �れ�よ��例
-	  ��「if cond then a else b end.message()��よ����書�るよ
-	  �����.
-
-Fri Aug 26 10:46:30 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* spec: 整��れ�文法������書�直��.
-
-	* parse.y: ��数日�混乱����文法を整���. 括弧を�略��メ
-	  ソッド呼�出����るよ�������, modifier�付�られるよ�
-	  ������, return�リスト�渡�るよ��������主�変更点
-	  ��る.
-
-	* process周り�怪�������Solaris 2.3�動�よ��.
-
-	* parse.y: 曖昧性���場���メソッド呼�出��引数�括弧を�略
-	  ��るよ��. �略��るメソッド呼�出���件�, 1)��ら�1個
-	  以上�引数を必���る��, 2)第1引数�`+', `-', `(', `[', `{',
-	  `/'��, ��始�り�置�れ�時�途中��れ�時��解釈���記
-	  ��始�ら����, ��る.
-
-Thu Aug 25 13:54:58 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(cond): �件��展開部�bug����.
-
-Wed Aug 24 00:01:15 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y: return�コンマ�区切��リストも���るよ��. ��り,
-	  return a, b, c�return [a, b, c]����味��る.
-
-	* parse.y: yield以外�大域脱出制御�をexpr�らexpr0�移��. よ�
-	  �メソッド�引数�制御�を使����る(�れ�困る人������).
-
-	* parse.y: `+'�定数展開�際�演算��優先順�を忘れ���.
-
-	* eval.c: until�戻り値�nil����.
-
-	* parse.y: modifier����if/unless/while/untilを追加.
-
-	* parse.y: 文法�らend�後����るキーワードを削除. ��ん�使�
-	  ����上�, emacs��ruby-mode��れ�対応��ェック�機械的�
-	  出�る��.
-
-Tue Aug 23 18:08:33 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: スクリプト実行開始��例外�発生��時�core dump��.
-	  組�込�用�コードを変更��時�enbug������.
-
-Tue Aug 23 00:07:17 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c: do�戻り値���もnil������.
-
-	* parse.y: loop制御変数�多�代入化�bug����.
-
-	* parse.y(expand_op): 文字列も畳�込��対象�.
-
-Mon Aug 22 10:50:01 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(expand_op): `+'�関�����則を使��, より多�定数畳
-	  �込�を行��よ��.
-
-	* ruby.c(proc_options): argc�0�時�も対応.
-
-	* parse.y: for���制御変数�多�代入も使�るよ��.
-
-Sat Aug 20 00:59:40 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y(call_op): 演算�`~'��り扱�をルール部�移動.
-
-Fri Aug 19 11:44:13 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* main.c: rubyを���プログラム�組�込�るよ��main()を分割��.
-	  �れ��も��, プログラム�呼�出�構造を修正��.
-
-	* parse.y: �件��定義を変更. if����件��中���`&&'や`||'
-	  �よ�`!'�引数��件���るよ��. ��変更�より�件�以外�
-	  場所�� `&&', `||', `!'演算��動作�直観�一致�る.
-
-	* parse.y: 実引数�`*'�後�続�引数�expr�制���. 今���全�
-	  �文�有効�����, ���定義文����も�ょ����.
-
-Thu Aug 18 10:21:45 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* re.c: 正�表�ルー�ン��期化部分を削除��������. �れ�
-	  �emacs�正�表��������.
-
-	* version.c: copyright表示を追加.
-
-	* version.c: �ージョン表示をstderr�.
-
-	* configure.in: gcc���場�test�失敗����.
-
-Fri Aug 12 14:12:23 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* array.c(astore): �列�拡大�る時��る程度�大��を����拡
-	  大�るよ��.
-
-	* io.c(Fprint): �列�対���一度文字列�変��る����, 直接内
-	  容を出力�るよ��.
-
-	* string.c(str_new): memmove�らmemcpy�置����. �れ�も��り
-	  速度���.
-
-	* ruby.h: データメン���り出����を文字列�らID�指定�るよ�
-	  ���. ��り�高速化��る.
-
-	* io.c: $ARGF���変数�引数列�ら�る仮想ファイルをオブジェクト
-	  ���扱�るよ����. 今���トップレベル�gets()��を使��
-	  アクセス�����, ��もオブジェクト指�的������.
-
-Thu Aug 11 11:43:15 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* gc.c: mark_location()�間���呼�出�方�行�残����.
-
-	* method.c: プロトタイプ宣言�足り����.
-
-Wed Aug 10 15:54:46 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* variable.c: -vオプション�指定�れ��る時��期化�れ����,
-	  大域変数, インスタンス変数, ローカル変数を�照��時点�warning
-	  を出�よ����.
-
-Tue Aug  9 11:50:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* bignum.c: 冪乗�関��も多�長演算を行��よ��. 特�浮動�数点
-	  数�範囲を越��時�処�を的確�行��よ��.
-
-	* eval.c: メソッド定義後�構文木�ら, メソッド定義部分を外�. 無駄
-	  ��定義�起�ら��よ���る���2��free()�れ����.
-
-	* array.c(Fary_aref): 引数�1��Fixnum�時, Range checkを行���
-	  �よ��修正.
-
-	* eval.c: メソッド�引数�数をコンパイル時�計算��若干�高速化.
-
-Mon Aug  8 13:06:24 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* object.c: nil�よる比較連鎖を����.
-
-	* parse.y: bit演算��優先順�を比較演算�よりも強���.  C��異
-	  �る����る�, 直観���致�る.
-
-	* gc.c: クラスを解放�る時, 個々�メソッド毎�キャッシュをクリア�
-	  る�����, クラス���クリア�るよ��.
-
-Thu Aug  4 18:45:09 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* methods.c(method_free): 解放�れ�メソッド�関��キャッシュをク
-	  リア����必�����.
-
-	* gc.c: Dataクラス�データ部分をfree()�忘れ���.
-
-Wed Aug  3 09:58:14 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: def func .. end形��よる関数メソッド�定義������.
-
-	* methods.c: func形��メソッドを����. ���も, ��り�味�
-	  ����.
-
-	* eval.c: $0��代入�ps(1)�出力�変化�るよ��.
-
-	* io.c(Fsyscall): syscall()を実�.
-
-Mon Aug  1 13:41:11 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: ダブルクォート�囲�れ�文字列や正�表�中�"#{変数�}"
-	  ���"#変数�"���形��変数�内容を埋�込む�����るよ�
-	  ����.
-
-	* io.c: 関数メソッドsystem2()������. 今��ッククォート��
-	  る�ら�.
-
-	* parse.y: `cmd`�よ��コマンドを文字列�展開�る�����るよ�
-	  ����.
-
-	* parse.y: __FILE__, __LINE__を追加. �れ�れファイル�(文字列),
-	  行番�(整数)を値��る疑似変数.
-
-Fri Jul 29 13:16:07 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* methods.h: メソッドをオブジェクト���扱��をや�る. メソッド
-	  �メモリ管���リファレンスカウントを使������. �れ�オブ
-	  ジェクト�数�減���ん�少���GC�速��る(��).
-
-	* purify�よ��メモリ関係��グを検査��(見��る,見��る…).
-
-	* gc.c: GCをプログラマ�変数をマーク�る形��ら, スタック�レジス
-	  タ�らマーク�る方法�変更. 移�性�下�るよ��気も�る�, siod
-	  やscm�も採用�れ��る�ら多分大丈夫���. Linux on i486�も動
-	  作を確���.
-
-Wed Jul 27 16:13:13 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(Eval): トップレベル��構造木をfree���よ��. ���解
-	  放�れる�ら時間�無駄��る.
-
-	* array.c, dict.c: "=="を構造一致�変更.
-
-Fri Jul 22 10:14:09 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* error.c: 組�込�タイプ���を登録�忘れ���.
-
-Thu Jul 21 14:06:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(freenode),eval.c(Eval): 解�木を解放�忘れ���.
-
-Mon Jul 18 10:19:15 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: 多�代入を処��るルール��グ����, 3�素以上�多�
-	  代入�失敗����.
-
-	* eval.c(rb_eval): 多�代入�, �辺��列���時��`to_a'メソッ
-	  ド��列�変���代入�るよ����. 今���仕様���辺値�第
-	  1�素�����代入�れ����, struct���列�変���るも�
-	  �変���方�嬉��気��る.
-
-	* dbm.c,dict.c(delete_if): メソッド追加.
-
-	* process.c(wait,waitpid): システムコールwaitpid���wait4��る
-	  時���らを使�よ��. configureも�れらを�ェック�るよ��変更.
-
-	* dbm.c, dict.c(clear): メソッド追加.
-
-Fri Jul 15 10:54:45 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* array.c(Fary_fill,Fary_clear): メソッドを追加.
-
-	* string.c(Fstr_split): $;�値�長�1�文字列��る時, �れを正�
-	  表�化����, ��る文字���分割�る.
-
-	* string.c(Fstr_aset/Fstr_aref): インデックス�文字列�範囲外��
-	  �時�動作をArrayを�考�修正��.
-
-	* array.c(astore,Fary_aset): 領域をrealloc��後, ゼロ�クリア�る
-	  よ��. 今���列�ゴミ�入����.
-
-	* array.c: []/[]=��インデックス関係を整�. 基本的�負�インデッ
-	  クス�代入����り例外�起���よ��変更��. 必��応���
-	  当�解釈��, 必��ら�領域を拡張�るよ��.
-
-Thu Jul 14 11:18:07 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* autoexec.c: 削除. autoload関係�機能�今後検討�よ�.
-
-	* dict.c: 辞書クラス�正��称をDict�変更��. 別����Hashを用
-	  ���. 今��Dictionary���長���������誰も使����
-	  �����. *BACKWARD INCOMPATIBILITY*
-
-	* parse.y: Dictを生��る構文を追加. ��らを{..}���.
-
-	* parse.y: �列を生��る構文を[..]�変更��. �去�Rubyスクリプ
-	  ト��互�性������, Dictを生��る構文を導入�る�当�り,
-	  perl5�����(�識��), 変更�る時期�今�����考��.
-	  *BACKWARD INCOMPATIBILITY*
-
-	* eval.c(Feval): eval()�メソッドを定義�る時, 定義�れるクラスを
-	  メソッド�所属�るクラス���. 今���Objectクラス�定義�れ�
-	  ��.
-
-	* parse.y: ローカル引数���時�eval()������.
-
-Tue Jul 12 09:41:28 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* pack.c: uuencode形��サ�ート.
-
-	* `-0'を`-R'�. 出力レコードセパレータをコマンドライン�ら指定�る
-	  方法������. ��も, 仕様�ゆれる��.
-
-Mon Jul 11 09:51:24 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby.c: `-r'オプション�`-0'オプション����. 当��`-r'も有効
-	  ��変更�れる�能性��る. `-R'�当������.
-
-	* version.c: version表示�日付を���.
-
-	* parse.y: private method�復活. Ruby�privateメソッド�C++���
-	  るprotected method�該当�るも��, `@'�始�る��を��.
-
-	* env.h: struct ENVIRON�定義を分離.
-
-	* parse.y: `\$var', `\@var', `%var'も許�よ��.
-
-	* variable.c(Fdefined): idも引数�����付�るよ��.
-
-	* parse.y: if文/unless文�キーワードthenを追加. then�������,
-	  �外�間���多���. も��ん�略��る.
-
-Sat Jul  9 02:16:04 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c(rb_eval): class/module�評価�新��スコープを割り当��
-	  �����. スコープ割り当�部分をrb_call()�らrb_eval()�移��.
-
-	* eval.c(rb_call): realloc()�渡�れる事��る, ローカル変数用�領
-	  域をalloca()����. �����る���.
-
-	* string.c(Fstr_times): 割り当��領域を越��部分を変更����.
-
-Wed Jul  6 15:52:42 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* socket.c: Socket -> BasicSocket, RawSocket -> Socket �改�.
-
-	* string.c(ucfirst,lcfirst): 最��1文字���大文字/�文字変�.
-
-	* numeric.c(chr): 整数�文字列化メソッド.
-
-	* inits.c, dbm.c: DBM�使���時�クラス��も�を定義���よ�
-	  ���.  利用����クラス�nil��る��を今後��リシー��よ
-	  �(�����アクセス��時点�エラー�発生����). autoexec()
-	  ��り方も検討�必���り���.
-
-	* bignum.c(bigadd): �グ修正.
-
-Thu Jul  7 11:12:18 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(Fload,Feval): eval_treeをクリア�忘れ���.
-
-	* _inspect: オブジェクトを�読形��文字列�変��る(主�デ�ッグ
-	  出力用).
-
-Wed Jul  6 00:57:18 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* numeric.c, bignum.c: 整数�対�る`[]'演算�. nビット目�セット�
-	  れ��る����を返�.
-
-Tue Jul  5 12:48:39 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* io.c(Feof): 追加. コマンドライン�ら�る仮想ファイル����も
-	  EOF�検出��るよ��.
-
-	* ruby.c: -l/-r/-R/-Xオプション�追加.
-
-	* ruby.c: -n/-pオプション�loop�付加��をメインルー�ン�移動�
-	  �. �れ�, オプション�解�途中�(`-c'オプション����)終了�
-	  ����������.
-
-	* io.c(Fgets): 高速化. �����を���方�速���. 虚��.
-
-Mon Jul  4 15:55:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* Socket:getsockname/getpeername - よ�や�仕様�安定��.
-
-	* io.c(Fgets): each�getsを記述�る�����, gets�eachを記述�
-	  るよ����.
-
-Fri Jul  1 10:35:49 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* $ENV[env] = nil/$ENV.delete(env)�環境変数を削除��るよ����
-	  �. $ENV.delete�環境変数�以��値を返�.
-
-	* !~�定義�間�����.
-
-	* Dict,DBM:[]= - nil�代入�よ���素を削除��るよ�����. �
-	  れ��も��nil�Dict��素��れ�����.
-
-	* ソース�整�. 盲腸�よ��使�れ����コードを����り, 変数
-	  �を付�変��り��.
-
-Fri Jul  1 00:21:29 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* Array:join() - �素数0��列�対��空文字列を返�.
-
-	* RawSocket:open(),socketpair() - 文字列�指定��るドメイン�タイ
-	  プを����追加��.
-
-Thu Jun 30 13:51:29 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* -fオプションを����. 昔(load�����頃)��残���, 今���
-	  ��必������.
-
-	* -sオプションを追加. perl�-sオプション���動�を�る.
-
-	* RawSocketクラスを�供�る. Socket�対�るシステムコールレベル�
-	  アクセス��能����.
-
-Thu Jun 30 00:27:19 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* Socket - bug fixes.
-
-	* linux��syscall(SYS_select)�正常�動作���.
-
-	* Socket:addr,peeraddr - �列���sockaddr�情報を返�.
-
-Wed Jun 29 00:14:20 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* Socket:setopt,getopt - setsockopt(2), getsockopt(2)��アクセス
-	  を実�.
-
-	* sprintf() - ruby��unsigned�無���, %uを�り除��.
-
-	* sprintf() - %b, %x, %o��2�補数表�, %B, %X, %O��符�付�表
-	  ��出力�るよ��. ��数日�sprintf()�仕様�ゆら�����,
-	  �れ��������.
-
-Tue Jun 28 14:42:03 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* Bignum:<<,>> - 2�補数を�る処�を除��. シフト演算��関係��
-	  処����.
-
-	* Bignum:^ - bug fix. 符���対���.
-
-	* sprintf() - 2進出力�"%b"を追加.
-
-	* sprintf() - %x, %o�Fixnumを出力�る時, 2�補数表示を行����.
-
-	* sprintf() - %x, %o�や�り負�数�時�`-'を出力�るよ��.
-
-Mon Jun 27 14:56:13 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* sprintf() - Bignum����も%d, %o�(2�補数表��変���)正�
-	  整数を表示�るよ����.
-
-	* Bignum�対�る論�演算�定義を修正��. 負�数�2�補数表���
-	  る����, ��仮想的�左��無��1�連続���るよ��演算�
-	  果を得る.
-
-	* Fixnum:<<,>> - 符�付シフト�変更.
-
-	* Bignum:>> - 負�整数�シフト�対応��.
-
-	* __END__, ^D, ^Z�スクリプトを終了��る.
-
-	* -xオプションを追加. #! ..ruby�る行��読�飛��.
-
-	* -cオプションを追加. コンパイル��を行�.
-
-Sat Jun 25 01:37:21 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* Fixnum:<< - 必��応��Bignum�拡張��左シフト�るよ��. よ�
-	  �, シフト幅�32を越�る�CやPerl�����値を返�.
-
-Fri Jun 24 10:01:28 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ioctl()/fcntl() - システムコールを呼�出����ッファ�大��を
-	  調節�るよ����.
-
-	* String:toupper/tolower - 文字列を置����コピーを作る����
-	  �, 元�文字列�内容を変更�るよ����.
-
-	* inplace editを実���. perl���よ��`-i'オプション�指定�る.
-	  も��も, ��ら�MS-DOS�����考������.
-
-	* デフォルト�出力先を追加��. 今���$stdout�代入�る��方法
-	  �����.
-
-Fri Jun 17 10:55:08 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* 環境変数�アクセス�る方法���getenv()/setenv()以外�$ENVを用
-	  ���. $ENV�文字列-文字列�辞書��る��よ��動作�るEnvDict
-	  オブジェクト�代入�れ��る(each�assocを与�る).
-
-	* nil�代入�る�core dump��. コンパイル時��ェックを強化.
-
-	* Struct: struct_new()�引数をGCプロテクト�る必���る. ���ス
-	  タック領域���もスキャン��るよ�����れ�����ん���
-	  �? �も, 移�性���.
-
-Fri Jun 17 01:01:46 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* Time::asctime() - 日付�フォーマット�日������.
-
-	* Stat: Stat�Etc����様�Struct�実�����, Statクラス�無
-	  ����.
-
-Thu Jun 16 10:32:23 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* bignum.c: ������グを修正��. Fixnumを渡�������普通
-	  �intを渡����. 失敗.
-
-	* big2str() - 1���base�割る代�り�, 4���割算を行��よ��
-	  ��. �れ�多�長割算�回数�1/4��る. �ら�整数->数(文字)�
-	  �変�をテーブルを用�るよ����.
-
-	* rb_ivar_get_1() - ���何ら��インスタンス変数を��オブジェク
-	  ト��, 未定義�インスタンス変数�値��定値������.
-
-	* yylex() - インスタンス変数��識�失敗����. attr()�正��動
-	  作������, 混用�る�動作�����. 全部������ら動�
-	  �����.
-
-	* Object:attr() - ���アクセスメソッド�定義�れ��る時��デフォ
-	  ルト�アクセスメソッドを定義���よ����. も��もアクセスメ
-	  ソッド����メソッド�区別�Ruby��存在�����, �れ�仕方
-	  ���よ�.
-
-	* pack.c: エンディアンをautoconf�判定�るよ������, v/V�使
-	  �るよ�����. ��ntoh?()/hton?()も自��用���.
-
-	* Stat: st_rdevをアクセス�るメソッドを追加. �ら�システム�stat
-	  構造体�st_blksize, st_blockを����る�をautoconf��ェック�
-	  るよ����.
-
-	* ドキュメントを少�整備��.
-
-	* INT2FIX()���, 31bit幅��証����も��, int2inum()�置��
-	  ��.
-
-Wed Jun 15 10:18:27 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* sprintf() - bignum�出力�時, 出力幅を正��計算�るよ����.
-
-	* str2inum() - base�0�時, baseを自動判定�るよ��(0x�始�る時
-	  16 進, 0�始�る時8進).
-
-Tue Jun 14 16:08:42 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* gc.c: Bignum型を追加�る�を忘れ���. 組�込�型を追加��時�
-	  �必�mark()�sweep()���型�関�る処�を追加�る必���る.
-
-	* bignum: 割算も動��よ��気��る. アルゴリズムを�解�����
-	  ��, 自信���.
-
-Mon Jun 13 14:36:55 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ��サ�ート�����メソッド����る�, 曲�り�り�もBignum
-	  �使�るよ���る. �れ�ioctlも使�る.
-
-Fri Jun 10 17:26:42 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* Comparable: 基礎��るメソッドを`=='�`>'�ら`<=>'�変更��. 今
-	  後Comparable�サブクラス�`<=>'��を�定義�る必���る.
-
-Wed Jun  8 13:12:18 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* Need_Fixnum()を��ん�����, NUM2INT()�直接int�変��る�
-	  ����. �れ�31bit�丸�����を����題����る.
-
-Tue Jun  7 09:45:31 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby.h: マクロFIXABLE(n)を追加. ����FIXNUM周り�定義を変更�
-	  �, 移�性を高��(�もり).
-
-	* C++�予約語��るnewを削除��. ���, も�����予約語��る
-	  class�関���, 置���る�語���������も������
-	  ������る.
-
-	* 31bitを越����INT2FIX()を関数呼�出��変��. 将�bignum�導
-	  入�れ�時��自動的�bignumを返�よ���る.
-
-	* readline() - 引数�`-'�標準入力を�味�るよ�����.
-
-	* ruby.h: �シフト�論�シフト�算術シフト��処�系�存�よ���
-	  �, ruby.h�cppを使���ェック�るよ����. �れ������
-	  ������, 手元�符�付intを論�シフト�る処�系�����確
-	  �����. NEWS-OS�CC�確��シフト���も論�シフト���よ
-	  ��気��るん���….
-
-Mon Jun  6 10:10:22 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* FIX2INT()�定義を変更��. ����昔����動�����ん��
-	  ��? も����, �シフト�符�拡張�処�系�存?
-
-	* FIX2INT()�FIX2UINT()を使�分�るよ����. も��もfixnum�31
-	  ビット������, 本質的�解決���ら�����(ioctl�組�込
-	  �����).
-
-	* printを関数的メソッド�ら通常メソッド�変更. 引数�与�られ��
-	  時��レシー�をプリント�るよ����. �れ�printをメッセージ
-	  形��も実行��るよ�����. 例:
-
-		ruby -e 'readlines().sort.print'
-
-	  上�スクリプト�, 引数���与�られ�(�る��標準入力�ら読�
-	  込�れ�)文字列を�行毎�ソート��表示�る.
-
-	* eval.c: argc,argvパターン�引数を��るメソッド�引数�一�も与
-	  �られ��時, argv�nil������(argv[0]�アクセス�る���
-	  ����).
-
-	* _exit()を追加. ��ら�例外処���行����.
-
-	* dbmクラス: クラス�称をDBM(大文字)�統一��.
-
-Sat Jun  4 00:51:04 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* ループ変数�も属性や�列�素を指定��るよ����.
-
-Fri Jun  3 09:49:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* 多�代入����, 属性代入, �列�素��代入も行��るよ����.
-
-	* Need_Fixnum(): nilを0�変��るよ��.
-
-	* Enumerable:min, max, index, includes - 追加. min, max��素�
-	  `<=>'メソッドを����を仮定���る.
-
-	* Dict/Dbm:length - �素数を返�メソッド.
-
-	* Dbmクラス�to_aメソッドを追加.
-
-	* Sun���るsort�誤動作�件, 昨日�修正�fix�れ�. ���, �れ
-	  ���動��������明ら������…. 比較関数��ん�値を
-	  返��も指定��領域外をアクセス�る���グ�����.
-
-	* ファイル�全内容を読ん�, �行を�列���返�メソッド�pythonを
-	  �考���`readlines'��������. �れ��も��gets�対�
-	  �readline���別�を用���.
-
-Fri Jun  3 00:08:38 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* Array:sort - 判別関数�戻り値�Fixnum����, Int��る����
-	  �. 間��. Sun�動作��������������も知れ��.
-
-Thu Jun  2 11:48:37 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* IO:read_all() - ストリーム�最後��入力��, �行を�素��る�
-	  列を返�メソッドを追加. ��関数メソッド read_all()も追加��.
-  	  �れ�引数�ファイル�ら読�込ん��行を�素��る�列を返�. �
-	  味的��
-
-		def read_all()
-	  	  ary = {}
-	  	  while gets()
-		    ary.push($_)
-		  end
-		end
-
-	  ���等価��る.
-
-	* String:atoiメソッドを削除. to_aメソッド�らa��列��る��連想
-	  を呼ん�, 混乱を招�����. 代�り�to_iメソッドを使���.
-
-	* �列��変�メソッドto_aを導入��. 通常�オブジェクト�自分自身
-	  を唯一��素��る長�1��列を返�. �列�自分自身を, 辞書�キー
-	  �値�ペア��列を返�. Enumeratedをinclude��クラス�, each�
-	  返���素を�む�列を返�.
-
-	* file.c: �定個�引数を���るメソッド(chmod,chown,utimes)を書�
-	  ���, 整���. �れ�伴�, 最��全��引数�型�ェックを行�
-	  �よ����. 型�ェック�失敗�る�処�を行����例外を発生�
-	  �る.
-
-	* configure.in: �必��テストを行����よ��修正��.
-
-Tue May 31 10:41:08 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* String:pack(): 2進数�文字列変�(B,b)�0�1�逆���.
-
-	* Math.c: 実数系�メソッド�引数���整数�渡�れ�時�自動的�変
-	  ��るよ����.
-
-	* toupper(), tolower(): 文字列�判定ミス�変��れ������.
-
-	* getopt_long()�仕様�よ��, スクリプト��引数�インタプリタ�
-	  引数��解釈�れ���. 引数パターン文字列�先頭�`+'を追加.
-
-	* config.hを削除��. DEFINE�Makefile�与�られる.
-
-	* sprintf(): "%d"�文字列�与�られ�時��アドレス����内容を
-	  整数�変��るよ����. ����浮動�数点数も変��るよ��変
-	  更��.
-
-	* regexp.c: ruby�拡張正�表�(\d, \D, \s, \S)�処��割り当��領
-	  域を越���ッファ�書�込ん���. 処����ッファを��ん�拡
-	  張�るよ����. �れ�昨日�題�����メモリ��題�解決��
-	  ����.
-
-	* yylex(): ダブルクォート文字列中�ダブルクォートを表��る��
-	  ��ックスラッシュ表��������.
-
-Mon May 30 10:07:42 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* 演算�`!'��辺も�件���る���. �れ�よ��, ��演算�を
-	  �定義�る人�混乱�る�も知れ���, 大多数���演算�を使�人
-	  �混乱を��る�����る���.
-
-	* autoconfを使��, 自動的�Makefile, config.hを生��るよ����.
-	  �れ�, 多��マシン��`configure'を実行��後, `make'一発�コ
-	  ンパイル��る���.
-
-	* clone: サブクラス�対��用�られ�場�, 元�オブジェクト���
-	  クラス�インスタンスを返�よ��(以��ビルトインクラス�場�を
-	  考������).
-
-	* ビルトインクラス�サブクラスも作れるよ��, リテラル��るクラス
-	  �もnewメソッドを追加��.
-
-	* malloc()���る. purify�必��も知れ��.
-
-	* re.c: rb_global_variable()�呼���形��間��. 変数���イン
-	  タを渡���れ�����.
-
-	* parse.y: ローカル変数�扱��引数�評価順��存�る移�性���
-	  部分����.
-
-	* attr(): 属性設定��グを直��. ��内部仕様�変���ん���…?
-
-Sat May 28 23:08:18 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* 正�表�キャッシュ�文字列一致判定を�インタ一致�ら内容一致�変
-	  更��. �����文字列リテラル�一回毎�新��オブジェクト�生
-	  ��れる����.
-
-Fri May 27 11:42:00 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* tr�ら文字削除(delete), 文字圧縮(squeeze)を分離��. �れ��も
-	  ��tr�オプション引数������.
-
-Thu May 26 10:32:55 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* スクリプト読�込�ルー�ンを書�直��, 通常ファイル以外�ファイ
-	  ル�や空文字列�スクリプト���与�られ�場��対応��. ��,
-	  標準入力�らスクリプトを読�込む時�, 一時ファイル�/tmp�残ら�
-	  �よ����.
-
-	* Fixnum:id2name - ID�ら文字列�戻�関数. String:intern�逆.
-
-	* Array: �列�範囲外��素をアクセス��時�例外を発生����,
-	  nilを返�よ����. �列�自動的�拡張�れる.
-
-	* string:stripを追加.
-
-	* -nオプション�-eオプションを複数指定��時も動作�るよ��.
-
-	* parse.y�<sys/types.h>もインクルード�るよ����.
-
-	* fname周り�細��bugを修正.
-
-Wed May 26 11:45:10 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* 定数をキャッシュ�るよ����. 繰り返��多�場���有効���
-	  ��, 一度��アクセス���場�����る��.
-
-Wed May 25 00:42:24 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* 多�代入文(foo, bar = 1, 2)�採用.
-
-	* �件�部�文字列�る��正�表�リテラルを���`=~'演算��よ�
-	  �`$_'�比較�れる. 更�`...'�両辺��整数リテラル�`$.'�比較
-	  �れる.
-
-Mon May 23 23:27:03 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* &� 形�������. 代�り�kernel:apply(id, args..)を導入.
-
-	* def op () ..形��導入. op��定義�能�演算�.
-
-	* constant�代入時�ェック. 既��期化�れ��る定数�代入��場�
-	  �例外�発生�る.
-
-	* 多�代入文.
-
-Thu May 19 22:57:07 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* 複�文�もvoid value��ェックを行�よ����.
-
-	* until�動作�修正(do..until型���).
-
-Wed May 18 01:06:25 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* 移��関�る若干��題を修正.
-
-	* 別��構文を「def a b����.
-
-	* until/unless: 演算��ら制御文�. 例外を���る機能�����.
-
-	* �択�能�機能をconfig.h�らdefines.h�移動.
-
-Fri May 13 23:20:21 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* -yオプションを新設. -dオプション�らコンパイラ�デ�ッグ部分を分
-	  離��.
-
-Tue Apr 25 20:17:33 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* マル��イト文字列を識別��使�るよ��. 個人的��使����無
-	  �����.
-
-	* `-v'フラグ�状態を$verbose�アクセス��るよ��.
-
-	* CVS�導入�伴�, �ージョン管��方法を変更.
-
-	* 真�目�ChangeLogを��る事���.
-
-Tue Mar  8 10:09:25 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* %変数� �よるクラス定数を導入.
-
-	* undef メソッド �よるメソッド定義��り消�を導入.
-
-	* rb_get_method_body��the_envを変更��, rb_call()�明示的�変更
-	  �るよ��. �れ�responds_to���環境�破壊�れ��.
-
-Mon Mar  7 17:46:15 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* 「&文字列�形�. 「�.文字列�型�メッセージセンド������.
-
-	* 自己代入形�(+=. -=, ...)
-
-	* obj.attr = expr形��採用.
-
-Thu Feb 24 16:23:28 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* toint, tofloat, print_stringを�れ�れto_i, to_f, to_s�変更.
-
-	* String:clone - Copy on Write�実�.
-
-Tue Feb 22 11:11:44 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* re.c: マッ���文字列��存�失敗����.
-
-	* trap: �能�ら�処��時間���るシステムコール(read, wait,
-	  sigpause, select)をフック��割り込�処���答性を高�る(DOS�
-	  ���無����).
-
-	* trap: 割り込�を��場�処��る�(迅速���険), 安全�タイミン
-	  グ�処��る�を�択��るよ��.
-
-Tue Feb 17 11:11:12 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* trap: 割り込��ンドラ.
-
-Wed Feb 16 12:29:12 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* String:crypt: 暗�化ルー�ン
-
-	* "::"演算��追加. a::b � {a, b}��義. a::b::c � {a, {b, c}}�
-	  �義(���). �義����も��, "::"演算�を使��方�少���
-	  メモリ効率�良�.
-
-	* Dir.rmdir(), File.unlink(), File.utime() -- �システムコール��
-	  インタフェース.
-
-	* kill -- kill(2) I/F
-
-	* select(): read��ェック��stdio��ッファリング�れ��る��
-	  ��を�ェック�るよ��.
-
-Tue Feb 15 15:08:31 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* file.c: statをキャッシュ�るよ��.
-
-	* File:utime()を追加.
-
-	* unliteralize(): フラグを破壊����.
-
-	* Bug(): coreを��よ��.
-
-	* String:tr -- tr(1)互�. 引数パターン��ょ������….
-
-Mon Feb 14 18:24:13 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* unless, until�例外も��見��よ��.
-
-	* select() -- select(2) I/F
-
-	* Array:pack, String:unpack: perl�pack/unpack��等�
-
-Tue Feb  8 17:11:10 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* setenv()���システム����putenv()を使��コードも用���.
-
-Mon Feb  7 09:52:44 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* 引数�一番最後�`*'を置�るよ����. �れ�rest引数�リストを
-	  �作�る必��少���る.
-
-Fri Feb  4 18:23:26 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* ruby-mode.elを書�直�. ���ん���������.
-
-	* 文字列リテラル�Copy on Writeを実�. �れ�文字列�リテラル��
-	  る�ら��������clone����も済む.
-
-Tue Feb  1 09:21:09 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* sub(), gsub()�, マッ���文字列を$&, $1..$9�アクセス��るよ
-	  ����. �時�マッ���部分文字列をコピー����よ��(元�
-	  文字列�変更�れ�も状態を�存�る��).
-
-Mon Jan 31 15:16:58 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* プライベートメソッド�仕様を変更. 今�����クラス�メソッド�
-	  ら��アクセス�������, サブクラス�メソッド�らもアクセス
-	  ��るよ����(C++���るprotected メン�関数).
-
-	* メソッドサー��アルゴリズムを改善�, 10%程度�高速化を行���.
-
-	* 高速化. C�記述�れ�メソッドを呼�出�時��setjmpを呼���よ
-	  ����. �れ�Cメソッドを多用�る場���3�程度高速����.
-
-Fri Jan 28 15:44:04 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* sh-modeを元�ruby-mode.elを作る. 演算��終る, 2行�渡る文��対
-	  応�������….
-
-Thu Jan 27 11:35:19 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* freenode(): NODE_NIL�解放忘れ.
-
-	* 字�解�部��グ修正(コメント�後�状態を戻�忘れ).
-
-	* protect .. end��グ修正. GC_LINK��スト��正���.
-
-	* join��グ修正(使���るオブジェクトをfree����).
-
-	* split��グ修正(アルゴリズム�������).
-
-	* fork()を追加.
-
-Wed Jan 26 17:09:56 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* ファイルテストメソッド�追加.
-
-	* rb_autoexec(): クラスを���アクセス��時�挙動を制御��るよ
-	  ����. �れ�autoloadも実���る. �れ��も��メソッド
-	  unknown������.
-
-Tue Jan 25 15:51:36 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* Dbmクラス, Mathモジュールを作�.
-
-	* -Iオプション�サー�パス�追加��るよ��.
-
-	* サー�パスを変数$load_path�設定��るよ��.
-
-	* load(): ダイナミックロードを使�るよ����.
-
-Tue Jan 18 14:14:01 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* Comparable:"<=>"
-
-	* Float,Fixnum:"**"
-
-	* Array:sort
-
-Fri Jan 14 16:53:37 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* version 0.07
-
-	* メソッド�関�るドキュメントを充実���.
-
-	* String:index(): 引数positionを増や��.
-
-Thu Jan 13 15:13:52 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* 未�期化�変数アクセスを����.
-
-	* 無駄�hash table�アロケーションを削除.
-
-	* Purify'd(on Sun)
-
-	* ~RE � ~STR�コンパイル時展開�抑制.
-
-	* Sun�移�. signal()�戻り値. RData�bug修正.
-
-	* parse.y: nlsルールを削除.
-
-	* yylex(): 改行�符��解�部分を変更.
-
-	* missing/strftime.c: 移�用.
-
-	* Time:strftime: ��他�メソッドもstrftimeを利用�るよ��.
-
-	* メソッド�定義時�メソッドキャッシュをクリア�る.
-
-Fri Jan  7 15:23:20 1994  Yukihiro Matsumoto  (matz at nws119)
-
-	* Float:coerce(): Fixnum�Float以外�引数を与�られる�時��例外
-	  を発生�るよ��.
-
-	* Stat: stat構造体�全��メン��対�るアクセスメソッドを用�.
-
-	* 未定義�クラス/モジュール���照�unknownメソッドを呼�出�よ�
-	  ���.
-
-	* baseline - version 0.06.
diff --git a/doc/ChangeLog-0.50_to_0.60 b/doc/ChangeLog-0.50_to_0.60
deleted file mode 100644
index 5f5b03ff40..0000000000
--- a/doc/ChangeLog-0.50_to_0.60
+++ /dev/null
@@ -1,462 +0,0 @@
-Thu Dec  8 00:32:21 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* io.c($<.file,$<.filename): ��ん��期化．
-
-	* parse.y(rb_class2name): include���るクラス�を正常�表示��
-	  ����．
-
-Wed Dec  7 15:40:36 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* dln.c: config.hをinclude�������．
-
-	* missing/strdup.c: 忘れ���．
-
-Fri Dec  2 15:21:44 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* 関数�命�ルールを変��(クラスメソッド: Sxxx_xxx，ユーティリティ
-	  メソッドxxx_xxx��)．
-
-	* re.c(casefold): 個々�正�表�オブジェクト�大文字�文字を無視�
-	  る����を設定��るよ����．
-
-Thu Dec  1 01:44:51 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* missing.c: システム��供�れ��ファイル�扱�を変更��．
-
-	* io.c($<): 変数`$<'�指���るも�を�在読�込�中�ファイル��
-	  ら仮想ファイル($ARGF)�変更��．��，�在読�込�中�ファイル
-	  ��ファイルオブジェクト�アクセス�るメソッドも用���．
-
-	* ruby.h(data_new): Dataオブジェクト�割り当�方法を改善��．
-
-Wed Nov 30 15:36:13 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* Makefile: ルールを整���．
-
-Tue Nov 29 00:09:26 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* array.c(`|'): 引数��列���，����オブジェクト��素���
-	  ��れ����時，��オブジェクトを追加�る．�れ���も���．
-
-	* process.c(gid,egid): GIDをアクセス�るメソッド．
-
-	* io.c(print): 文字列��列�対�る処�を組�込ん�若干�高速化を
-	  図��．出力�多�場��効���るよ��．
-
-	* parse.y(parse_string): ""�囲�れ�文字列内��対応�るエスケー
-	  プ���`\'を残���よ��．��り，今後�"\k" -> "k"��る(以
-	  ��"\k"���)．
-
-Mon Nov 28 18:02:31 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* re.c(re_regsub): 置�文字列�置����完全���．
-
-	* 一時オブジェクト�解放を���GC�任��．今��������タイ
-	  ミング�オブジェクトを解放�る�能性����．昔�GC�時���れ
-	  �も良������．
-
-Tue Nov 22 00:15:24 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c($"): 既�ロード��ファイル���列．
-
-Mon Nov 21 01:09:50 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* array.c(&,|): 集������演算�和演算．
-
-	* io.c($<): 文字列を代入��時��自動的�open�るよ��．IO�サブ
-	  クラス������ェックも行�．
-
-Sun Nov 19 23:02:27 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c($:): $LOAD_PATH�別�．
-
-	* io.c($>): デフォルト出力先．IO.default�無����．
-
-	* io.c($<): $FILENAME�別�
-
-	* glob.c(each): ワイルドカード�マッ��るも����場�，パターン
-	  ��も�を与�るよ��．
-
-	* file.c(chmod,chown,unlink,utime): `\'�ワイルドカードをエスケー
-	  プ��るよ��．
-
-Fri Nov 18 00:20:42 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.55 released
-
-	* file.c(chmod,chown,unlink,utime): 引数���与�られ�文字列�ワ
-	  イルドカード���れ��る場���Globオブジェクト�変��る.
-
-Wed Nov 16 17:33:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* file.c(chmod,chown,unlink,utime): 引数���ワイルドカードも��
-	  付�るよ��. ��場��マッ��るファイル全体��用�れる.
-
-Fri Nov 11 00:07:28 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* string.c(strip): 文字列��も�を変更�るよ��.
-
-	* eval.c(rb_cal): 環境をスタック��むタイミング�間�������，
-	  ��切�エラーメッセージ�出る時����．
-
-	* eval.c(rb_undefined): メソッド�無�時�メソッド�アクセス���
-	  �時��メッセージを替��．
-
-	* string.c: toupper/tolower�upcase/downcaseを使��実�．
-
-	* string.c: lcfirst/ucfirst�削除．
-
-Thu Nov 10 16:15:16 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* string.c: sub/gsub�置�後�文字列を返�よ����.
-
-	* string.c: toupper/tolower/lcfirst��を文字列を変更�るも���
-	  ��も��2 種類を�供�るよ����.
-
-Tue Nov  1 17:52:09 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: 変数展開��グ����元�文字列を破壊����.
-
-Thu Oct 27 09:56:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: rest引数�処��間�����.
-
-	* env.c(rb_yield): ローカル変数�設定�間�����.
-
-Wed Oct 26 19:01:43 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: 引数セット�高速化.
-
-	* process.c: sleep��グ.
-
-	* parse.y, gnuglob.c: Sun�cc�もコンパイル��るよ��.
-
-Tue Oct 25 00:36:16 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: 若干�高速化. スタック�処��よ��rb_call()�少���
-	  ���分�穴埋��ら��.
-
-	* eval.c: blockをenv�ら外�����スタックを軽���.
-
-Mon Oct 24 11:47:54 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* re.c: 正�表�アクセス用�変数($`, $', $+)を追加.
-
-	* re.c($KANJI): 処��る漢字コードをrubyプログラム内�ら設定��る
-	  よ����.
-
-Sat Oct 22 00:42:41 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c: イテレータ内�redo�retry�処���グ����．
-
-Fri Oct 21 00:53:21 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* string.c(swapcase): 文字列�大文字�文字を置���る.
-
-	* string.c(ljust,rjust,center): 文字列�レイアウト用メソッド.
-	  sprintf()�も��よ�������る�.
-
-	* socket.c(recv,recvfrom): flags引数を�略�能���. �略時�値�
-	  0��る.
-
-	* socket.c(recvfrom): recv��様��, データ�相手アドレス�ペアを
-	  返�.
-
-	* socket.c(accept): 戻り値を�����ソケット�ら, ソケット�アド
-	  レス�ペア�変更��.
-
-	* eval.c(eval): the_classをセット�る時�, last_module�include�
-	  れ��るモジュール(T_ICLASS)��れ�, 定義元�モジュール�方をセッ
-	  ト�るよ��. ��修正����ICLASS�対��メソッド�呼�れる�
-	  能性��り, �審�動作を�る(��).
-
-	* class.c: オブジェクト�clone�際�特異クラス(特異メソッド用�ク
-	  ラス)を��ん�コピー�るよ����. 今���個々�メソッド�コ
-	  ピーを忘れ���.
-
-	* numeric.c: Numeric�new�cloneをundef��.
-
-Thu Oct 20 11:30:00 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.53 released.
-
-	* parse.y: TopLevel�def文�関数メソッドを定義�るよ����.
-
-	* parse.y: def文�private指定������. export/noexportメソッド
-	  を使��もら������.
-
-	* parse.y: case文�thenを�む�����るよ�����.
-
-Wed Oct 19 13:09:58 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* object.c(export,unexport): 関数メソッド�設定用メソッド.
-
-	* eval.c, class.c: 関数的メソッドを復活��(���…), `@'�よる
-	  privateメソッドを����. や�り, 関数的�も��関数的�呼��
-	  �気�����. ��仕様�変動��������よ��気も�る��.
-	   *BACKWARD INCOMPATIBILITY*
-
-	* eval.c: メソッド�構�を変更�, 別�管��関数メソッド�管�を分
-	  離��.
-
-	* eval.c: the_env->last_funcをCメソッド�時�も更新�る. �れ��
-	  ��Struct�アクセス�動作���.
-
-Fri Oct 14 13:22:18 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.52 released: ……�ん�����.
-
-	* eval.c(rb_call): return�処��間�������, マシン�よ��
-	  �return�関数を終了�る�����toplevel����抜����.
-
-	* dbm.c: Dict��様�each�[key,value]を返�よ��.
-
-	* version 0.51 released
-
-Thu Oct 13 12:13:48 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(SETUP_ARGS): 付加引数��列���時���列�変��る.
-
-	* parse.y: 括弧���メソッド呼�出��も`*'�よる付加引数�使�る
-	  よ����. ���, 通常引数�一�も��場��乗算演算��区別�
-	  ������, 必�括弧�必�.
-
-Wed Oct 12 10:09:07 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(rb_call): キャッシュ�計算をinline化. キャッシュミス��
-	  れ�関数呼�出��メソッドを検索�る. methods.c������.
-
-	* eval.c(rb_eval): ローカル変数用�領域をalloca()�るよ��変更.
-	  サイズ�変更�必���れ�改��malloc()�るよ��.
-
-	* parse.y: error recovery�際�lex_stateを更新����よ��.
-
-Tue Oct 11 17:10:46 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* socket.c(for_fd): ファイル記述�(Fixnum)�らソケットインスタンス
-	  を得るメソッド. ����inetd�ら起動�れ�サー��標準入出力�
-	  ソケット�作を行�����使�. ��りSocket.for_fd($stdin)�標
-	  準入力�対応�るソケットオブジェクト�得られる.
-
-	* io.c(to_i): IOクラス�インスタンスを整数�変��る���ファイル
-	  記述�を返�よ��.
-
-	* numeric.c(num2int): to_iメソッドを使����る�り整数�変��る.
-	  以��num2fix���全��オブジェクト�対��to_iメソッドを�用
-	  ����.
-
-	* sprintf.c(Fsprintf): 整数表示�際, オブジェクトを��る�り整数
-	  �変��るよ��(to_iメソッドを使�).
-
-Fri Oct  7 14:06:32 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(Fcaller): 必�性�よ�分�ら����ドキュメント�ら削除.
-	  将�デ�ッガを作る時�復活��よ�.
-
-	* eval.c(rb_call): C�記述�れ�メソッド呼�出���環境をスタック
-	  �セーブ������よ��高速化.
-
-Wed Oct  5 15:00:58 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby.h: 一時env.h�移動���Qself�定義を復活. ���今回�関数
-	  ���実�(env.h��変数����定義���る).
-
-	* ruby.h: TRUE�syntax error��ら��よ�#undefを追加.
-
-	* eval.c(rb_eval): thread化�挑戦���, 失敗(速��ら����).
-	  �, Scoping���無駄�コード�削除�メソッド呼�出��引数セッ
-	  ト�inline化�若干�高速化を実���. 副作用���, argc, argv形
-	  ��関数呼�出��仕様�変化��(argv�selfを�������).
-
-	* eval.c(rb_call): メソッド呼�出��高速化.
-
-Tue Oct  4 11:40:53 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby-mode.el: 修飾��対応��.
-
-	* parse.y: 多�代入�restを���. ��機能を使��optional引数�
-	  解��簡����る(��).
-
-	* pack.c(unpack): uuencode形��decode�際�文字列�長��間���
-	  ��.
-
-Mon Oct  3 15:58:41 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* file.c(type): ファイルタイプを文字列�返�メソッド.
-
-Fri Sep 30 11:36:07 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* object.c: デフォルト�真�値��る%TRUE�値を1(Fixnum)�らt�変
-	  更��. to_s�文字列�変���時�も`t'�表示�れる. 更���込
-	  ん�`t'を予約語���lisp�よ���よ���も����, ����
-	  �決心������. 一文字�ローカル変数���り使����気��
-	  る��….
-
-	* array.c,dict.c: equalを�定義���るクラス�, hashを正��定義
-	  ��.
-
-Wed Sep 28 23:30:28 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c(Ffail): 今��fail�カー�ルクラス�メソッド�����,
-	  構文�組�込ん�. ��変更�よ��, 1)`fail'�予約語��り, ロー
-	  カル変数�用�る����������. 2)`fail'�体�例外を発生�
-	  るよ�����. 3)fail�メソッド����������定義�れる�
-	  能性������.
-
-	* dic.c, dbm.c(indexes): Array�indexes��様�機能を��メソッド
-	  を追加.
-
-	* array.c(indexes): 引数をインデックス��る�素��列を返�. 整数
-	  ��列を引数��る時��引数��素をインデックス��る�素��列
-	  を返�.
-
-Mon Sep 19 13:42:31 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* array.c(aset): 部分�列�対�る代入��列以外�オブジェクト�指
-	  定�れ�場��多�代入���ルール��列化�るよ����.
-
-	* io.c(print): 引数���与�られ��オブジェクト�print_onメッセー
-	  ジを与�るよ��. 実行速度���る�柔軟性�増�.
-
-Fri Sep 16 14:59:18 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* glob.c: ワイルドカード�導入. bash�使�れ��るGNU�globルー�
-	  ンを�用��.
-
-Mon Sep 12 18:36:58 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(value_expr): ��nil�時�対応.
-
-	* class.c: ICLASS�class�必�Class/Moduleを指�よ��.
-
-Tue Sep  6 16:23:28 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* re.c:	正�表�内�「\数字�形��指定��るよ��.
-
-	* parse.y:「do expr using var ... end�形�������. 寂��気
-	  も�る. *BACKWARD INCOMPATIBILITY*
-
-Mon Sep  5 10:59:01 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* numeric.c(next): Numericクラス�もnextを�供.
-
-	* string.c(upto): uptoを�供.
-
-	* range.c(each): nextを使��インタフェース�らuptoを使�よ��変
-	  更��. ��方�一��メソッド�処�を����行�������る.
-
-Fri Sep  2 15:25:39 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* dict.c(each): 戻り値を[key, value]�ペア�変更. 今���each�
-	  each_value���残る. *BACKWARD INCOMPATIBILITY*
-
-Thu Sep  1 10:49:04 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* �功��(特別�戻り値を����)システムコール�`0'を返�よ��.
-
-Wed Aug 31 00:26:51 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* string.c: �ェックサムを得るメソッド`sum'を作��.
-
-	* class.c(include_class_new): ICLASS�classをも��クラス���.
-	  gc�際�元クラスをマーク�る必���る��, フィールドを増や�余
-	  地�無���, classフィールドを�用��. ��見�り�間����
-	  �, ICLASS�インスタンス�メッセージを�る事��れ�, ����動
-	  作を�る���.
-
-	* eval.c(masign): �(a,b = nil)�値を[nil]�らnil�変更��.
-
-Mon Aug 29 11:56:09 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* class.c: rb_define_mfuncを無���, メタクラス�モジュールをイン
-	  クルード�るよ����.
-
-	* error.c(yyerror): ��行�複数�syntax errorをリ�ート���よ�
-	  ���.
-
-	* file.c: FileTestモジュール�ファイルテストメソッドを分離��.
-
-	* parse.y: 演算�を指定�る時�lex_stateを正��設定��.
-
-Sat Aug 27 01:23:34 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y: if/while���複��をprimary�移動��. �れ�よ��例
-	  ��「if cond then a else b end.message()��よ����書�るよ
-	  �����.
-
-Fri Aug 26 10:46:30 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* spec: 整��れ�文法������書�直��.
-
-	* parse.y: ��数日�混乱����文法を整���. 括弧を�略��メ
-	  ソッド呼�出����るよ�������, modifier�付�られるよ�
-	  ������, return�リスト�渡�るよ��������主�変更点
-	  ��る.
-
-	* process周り�怪�������Solaris 2.3�動�よ��.
-
-	* parse.y: 曖昧性���場���メソッド呼�出��引数�括弧を�略
-	  ��るよ��. �略��るメソッド呼�出���件�, 1)��ら�1個
-	  以上�引数を必���る��, 2)第1引数�`+', `-', `(', `[', `{',
-	  `/'��, ��始�り�置�れ�時�途中��れ�時��解釈���記
-	  ��始�ら����, ��る.
-
-Thu Aug 25 13:54:58 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(cond): �件��展開部�bug����.
-
-Wed Aug 24 00:01:15 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y: return�コンマ�区切��リストも���るよ��. ��り,
-	  return a, b, c�return [a, b, c]����味��る.
-
-	* parse.y: yield以外�大域脱出制御�をexpr�らexpr0�移��. よ�
-	  �メソッド�引数�制御�を使����る(�れ�困る人������).
-
-	* parse.y: `+'�定数展開�際�演算��優先順�を忘れ���.
-
-	* eval.c: until�戻り値�nil����.
-
-	* parse.y: modifier����if/unless/while/untilを追加.
-
-	* parse.y: 文法�らend�後����るキーワードを削除. ��ん�使�
-	  ����上�, emacs��ruby-mode��れ�対応��ェック�機械的�
-	  出�る��.
-
-Tue Aug 23 18:08:33 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: スクリプト実行開始��例外�発生��時�core dump��.
-	  組�込�用�コードを変更��時�enbug������.
-
-Tue Aug 23 00:07:17 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c: do�戻り値���もnil������.
-
-	* parse.y: loop制御変数�多�代入化�bug����.
-
-	* parse.y(expand_op): 文字列も畳�込��対象�.
-
-Mon Aug 22 10:50:01 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(expand_op): `+'�関�����則を使��, より多�定数畳
-	  �込�を行��よ��.
-
-	* ruby.c(proc_options): argc�0�時�も対応.
-
-	* parse.y: for���制御変数�多�代入も使�るよ��.
-
-Sat Aug 20 00:59:40 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y(call_op): 演算�`~'��り扱�をルール部�移動.
-
-Fri Aug 19 11:44:13 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* main.c: rubyを���プログラム�組�込�るよ��main()を分割��.
-	  �れ��も��, プログラム�呼�出�構造を修正��.
-
-	* parse.y: �件��定義を変更. if����件��中���`&&'や`||'
-	  �よ�`!'�引数��件���るよ��. ��変更�より�件�以外�
-	  場所�� `&&', `||', `!'演算��動作�直観�一致�る.
-
-	* parse.y: 実引数�`*'�後�続�引数�expr�制���. 今���全�
-	  �文�有効
diff --git a/doc/ChangeLog-0.60_to_1.1 b/doc/ChangeLog-0.60_to_1.1
deleted file mode 100644
index bd5f140dc3..0000000000
--- a/doc/ChangeLog-0.60_to_1.1
+++ /dev/null
@@ -1,3955 +0,0 @@
-Tue Aug 12 16:02:18 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c: option variables: $-0, $-p(readonly), $-v,
-	  $-I(load_path), $-a(readonly), $-K, $-d, $-F, $-i, $-l.
-
-	* parse.y (yylex): ignore rd (ruby document) in the code.
-
-Mon Aug 11 12:37:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (Init_Regexp): $-K as alias to the $KCODE.
-
-	* io.c (Init_IO): new virtual variable $-i for the value of -i
- 	  option.
-
-	* enum.c (Init_Enumerable): include? as alias of member?
-
-Fri Aug  8 11:16:50 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_foreach): now the record separator can be specified.
-
-	* io.c (io_s_readlines): new method to read in whole file (or
- 	  command output) from path.
-
-	* ext/socket/socket.c (Init_socket): recvfrom did not work.
-
-	* ext/socket/socket.c (sock_send): forgot to check nil for false
-	  value.
-
-Thu Aug  7 11:40:01 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (mod_constants): lists constants defiend in the
-	  modules/classes.
-
-	* variable.c (rb_const_set): no longer warns about constant
-	  overriding by subclasses.
-
-	* eval.c (mod_eval): does eval() on module's context. local
-	  variables are shared with outer scope.
-
-	* object.c (Init_Object): remove private_attr/public_attr.
-
-Wed Aug  6 14:21:36 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (mod_attr): forgot to check nil for false value.
-
-Mon Aug  4 11:50:28 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (class_s_new): need not to specify names to create
-	  classes (or modules) dynamically.
-
-	* variable.c (rb_class_path): scan class constants for anonymous
-	  classes/modules to make up pathes.
-
-Wed Jul 30 08:45:12 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): stop to cache const value in nodes.
-
-Sat Jul 26 03:17:22 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* numeric.c (flo_to_s): wrong .0 at end.
-
-Sat Jul 26 00:36:36 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (error_print): always print exception type in the
- 	  toplevel exception handler.
-
-	* string.c (str_hash): wrong hash value.
-
-Thu Jul 24 11:05:51 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (uscore_get): proper error message for unset $_.
-
-Wed Jul 23 09:56:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (obj_methods): returns list of method names of the
-	  specified object.
-
-	* class.c (mod_instance_methods): returns list of method names of
-	  the class instnace.
-
-Fri Jul 11 22:38:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (class_superclass): returns class's superclass
- 	  itself. (1.1)
-
-	* object.c (obj_type): returns object's class itself. (1.1)
-
-	* class.c (mod_included_modules): list included modules.
-
-	* object.c (class_superclass): raises error for Object.
-
-Thu Jul  3 09:54:02 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (SETUP_ARGS): save source position, remove nd_line().
-
-	* eval.c (rb_call): replace modulo by bit-masking.
-
-	* eval.c (POP_SCOPE): force recycle scope object to reduce gc rate.
-
-	* gc.c (obj_free): aboid calling run_final() when no finalizer is set.
-
-	* eval.c (PUSH_VARS): do not allocate the dynamic scope's end-mark
-	  object.
-
-Wed Jul  2 14:25:07 1997  KIMURA Koichi  <kkimura@pure.cpdc.canon.co.jp>
-
-	* Native mswin32 support.
-
-Tue Jul  1 09:59:00 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970701
-
-	* parse.y (mrhs): allow rest-star(*) in right hand side.
-
-Tue Jun 24 19:04:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970624
-
-Sat Jun 20 22:22:51 1997  Michio "Karl" Jinbo  <karl@marcer.nagaokaut.ac.jp>
-
-	* eval.c: freebsd 3.0 <sys/select.h> support.
-
-Fri Jun 20 01:24:45 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970620
-
-	* gc.c: eliminate uninitilalized field of Hash, Array etc., to
-	  avoid dumping core.
-
-Thu Jun 19 01:29:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970619
-
-	* string.c (str_split_method): wrong limit.
-
-Sat Jun 14 01:54:16 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* class.c (rb_singleton_class): no singleton for special
-	  constants (now raises exception).
-
-	* eval.c (ruby_init): cbase in TOPLEVEL_BINDING need to be
-	  initialized.
-
-Sat Jun 14 01:01:16 1997  maeda shugo  <shugo@po.aianet.ne.jp>
-
-	* array.c (sort_2): wrong comparison.
-
-Sat Jun 14 00:53:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* hash.c (hash_foreach): safe iteration.
-
-Fri Jun 13 14:04:56 1997  Michio "Karl" Jinbo  <karl@marcer.nagaokaut.ac.jp>
-
-	* configure.in: -Bshareable option for netbsd.
-
-Fri Jun 13 01:16:22 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* io.c (pipe_open): call io_unbuffered() only for writable pipes.
-
-Thu Jun 12 01:14:15 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970612
-
-	* ext/socket/socket.c (sock_new): use io_unbuffered().
-
-	* ext/marshal/marshal.c (w_long): compact long format, which
-	  supports 64 bit architectures (unless longs are >32 bit size).
-
-	* ext/marshal/marshal.c: allows recursive data for marshaling.
-
-	* parse.y (rb_intern): raise exception for non-internable string.
-
-	* ext/marshal/marshal.c (marshal_load): allows direct loading from
- 	  strings.
-
-	* ext/marshal/marshal.c (marshal_dump): allows direct dump to strings.
-
-	* ext/marshal/marshal.c (marshal_dump): interface changed.
-
-Wed Jun 11 18:26:00 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* gc.c (rb_newobj): remove needless memset().
-
-Mon Jun  9 13:03:43 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): reduce condition checks from while/until loop.
-
-	* eval.c (rb_eval): wrong jump point for `next'.
-
-Fri Jun  6 11:47:39 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.c (ruby_set_argv): initialize dln_argv0 for dln_a_out.
-
-	* ext/socket/socket.c (open_unix): display path name for exceptions.
-
-	* ruby.c (proc_options): option -S did not work well.
-
-Fri May 30 02:14:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970530
-
-	* eval.c (eval): set $! properly if exception raised in eval().
-
-	* io.c (io_write): now handles non T_FILE object.
-
-	* io.c (io_defset): $< can be anything which has `write' method.
-
-Thu May 29 15:40:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (eval): $@ is always an array (not string).
-
-	* pack.c (pack_unpack): avoid corrupting memory for unexpected
-	  input strings.
-
-Wed May 28 12:46:13 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970528
-
-	* process.c (rb_waitpid): do not block other threads.
-
-Tue May 27 12:02:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (ruby_init): split initialize and processing command line
-	  options.
-
-	* ruby.c (ruby_options): ruby_init(0, 0, envp) dumps core.
-
-Tue May 20 18:59:45 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* variable.c (rb_ivar_set): invalid instance variable access for
-	  built-in object raises TypeError.
-
-Fri May 16 17:32:21 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970516
-
-	* dir.c (push_globs): was freeing non heap pointer.
-
-	* gc.c: remove some duplicated prototypes.
-
-	* ext/kconv/kconv.c: fix prototypes.
-
-Fri May  9 11:38:59 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970509
-
-	* gc.c (obj_free): avoid free(NULL).
-
-	* eval.c (rb_check_safe_str): argument missing for TypeError().
-
-Thu May  8 01:14:28 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (file_s_dirname): need to return "." for path without
-	  slashes.
-
-Wed May  7 19:18:48 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* process.c (f_fork): child processe does not inherit parent's
- 	  itimer setting on linux.  call setitimer() again in the child
-	  process.
-
-Sat May  3 02:49:43 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/curses/curses.c: modified for portability and add to the
- 	  standard distribution.
-
-Wed Apr 30 00:34:00 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (file_s_size): returns 0 for empty files (not FALSE).
-
-Fri Apr 25 02:17:50 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970425
-
-	* eval.c (f_load): free unused name-table.
-
-	* eval.c (f_load): copy local variable name-table.
-
-	* gc.c (obj_free): avoid free(NULL).
-
-	* eval.c (rb_eval): forgot to make link from the scope object to
-	  NODE_SCOPE.  It may crash the interpreter.
-
-Thu Apr 24 00:35:09 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* random.c (f_srand): save old seed anyway.  srand() returns no
- 	  value on some systems.
-
-	* gc.c (obj_free): avoid double free of the local variable name
-	  table.
-
-	* parse.y (top_local_setup): modify realloc to handle offset.
-
-Tue Apr 22 12:58:26 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970422
-
-Thu Apr 17 00:40:51 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* configure.in (rb_cv_bsdpgrp): proper check for BSD
-	  setpgrp/setpgrp.
-
-Wed Apr 16 16:14:02 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (proc_call): proc called in other thread must be orphan.
-
-Tue Apr 15 10:46:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970415
-
-	* gc.c (obj_free): NODE_SCOPE marked from SCOPE object.
-
-	* gc.c (gc_mark): some nodes marked wrong.
-
-	* process.c (proc_getpgrp): wrong argument
-
-Fri Apr 14 18:32:42 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970414
-
-Fri Apr 12 01:20:12 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.h: String pointer changed to unsigned char.
-
-Fri Apr 11 10:27:29 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970411
-
-	* Makefile.in: create libruby.a before linking ruby.
-
-	* string.c (str_strip_bang): >0x80 characters for isspace().
-
-	* eval.c (proc_call): set safe-level temporally
-
-	* eval.c (proc_s_new): save safe-level in the proc context.
-
-	* eval.c (rb_eval): no class/module extension in safe mode.
-
-Thu Apr 10 02:10:41 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* gc.c (gc_mark): remove some pointer checks for speeding up.
-
-	* ruby.c (ruby_options): set $0 temporally for -r option.
-
-	* eval.c: built-in security feature.
-
-	* gc.c (gc_sweep): do not free nodes during compile.
-
-	* parse.y (yycompile): set flag when compiling.
-
-Wed Apr  9 10:19:02 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.c: forgot to include <ctype.h> for isspace().
-
-	* file.c: provide S_ISREG for some platforms.
-
-	* io.c (Init_IO): added some $< operations.
-
-	* lib/ping.rb: check host upness using TCP echo.
-
-Tue Apr  8 00:10:15 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (arg_read): bug with 0 length input.
-
-Mon Apr  7 11:36:16 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/fcntl/fcntl.c: module for fcntl constants.
-
-	* eval.c (rb_alias): bug when original was an alias.
-
-	* parse.y (primary): syntax to access singleton class.
-
-	* eval.c (mod_public_method): method's to specify visibitily of
-	  the class methods.  make_method_{public,private} removed.
-
-Fri Apr  4 21:43:57 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970404
-
-	* gc.c (obj_free): finalizer added for experiment.
-
-Thu Apr  3 02:12:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_schedule): make Fatal rise on main_thread on
-	  deadlocks.
-
-	* eval.c (thread_join): raise ThreadError instead of Fatal, in
-	  case of deadlock.
-
-	* regex.c (re_compile_fastmap): uninitialized local variable.
-
-	* parse.y (parse_regx): new option //[nes] to specify character
-	  code for regexp literals.  Last specified code option is valid.
-
-	* re.c (reg_s_new): additional 3rd argument to specify compiled
- 	  regexp's character code.
-
-	* re.c (reg_new_1): regexp character code can be specified for
-	  each regexp object.
-
-Wed Apr  2 14:51:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_create): handle uncaught throw.
-
-	* eval.c (thread_create): halt on some deadlock conditions.
-
-	* regex.c (is_in_list): wrong result for non-mbc higher-byte
-	  characters.
-
-	* regex.c (re_match): wrong skip for multi-byte characters.
-
-	* regex.c (re_compile_fastmap): wrong fastmap in non-mbc mode.
-
-	* hash.c (Init_Hash): hash compatible features added to ENV.
-
-Tue Apr  1 15:24:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (obj_extend): remove Object#extend as an iterator which
- 	  is in experimental state, since it unveils internal singleton
- 	  classes.
-
-Mon Mar 31 14:29:39 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970331
-
-Sun Mar 30 19:40:57 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* parse.y (terms): avoided win32 gcc's optimization bug.
-
-Sat Mar 29 11:21:58 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* struct.c (make_struct): St[val,..] creates new structure.
-
-Fri Mar 28 11:24:51 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (obj_make_private): new method make_method_{public,private}
-	  to change visibility of singleton methods.
-
-	* regex.c (re_compile_pattern): enables numeric literal >= 0x80 in
-	  the character class.
-
-	* regex.c (re_compile_pattern): enabled numeric literal >= 0x80,
-	  in multibyte mode.
-
-	* regex.c (re_compile_fastmap): modified exantn and charset(_not)
-	  to set fastmap for higher bytes properly.
-
-	* regex.c (is_in_list): now matches numeric literals.
-
-Thu Mar 27 13:34:20 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* pack.c (pack_unpack): extra null byte after unpacked string.
-
-Wed Mar 26 15:20:34 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* regex.c (re_compile_pattern): register numbers must be fit in a
- 	  byte (0 <= regnum <= 0xff).
-
-	* regex.c (re_compile_fastmap): forgot to set mbchar map for
- 	  charset_not if RE_MBCTYPE is on.
-
-	* regex.c (re_compile_pattern): set list bits for multi-byte
-	  characters for \W, \S, \D in range expression.
-
-	* object.c (obj_is_kind_of): defined that nil itself is kind of
- 	  nil.  TRUE is kind of TRUE, FALSE is kind of FALSE likewise.
-  	  This change makes `obj.kind_of?(eval(obj.type))' always true.
-
-Tue Mar 25 14:08:43 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* lib/English.rb: provides nicer English alias for the variables.
-
-	* parse.y (expr): alias $var1 $var2 makes alias of the global
-	  variable.
-
-Mon Mar 24 18:23:20 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970324
-
-Thu Mar 20 22:04:59 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (mod_modfunc): forget to clear method cache.
-
-Wed Mar 19 17:06:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (program): set methods' default private/public status
-	  correctly under eval().
-
-	* eval.c (eval): set the_class correctly while evaluating string.
-
-Tue Mar 18 12:23:53 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (eval): yield can be called from eval().
-
-	* version 1.0-970318
-
-	* parse.y (program): regexp in condition expression should do
-	  matching operation with $_.
-
-	* re.c (reg_regsub): wrong substitution.
-
-Fri Mar 14 14:36:28 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* hash.c (hash_invert): returns value to key mapping of the
-	  associative array.
-
-	* ext/socket/extconf.rb: set environment variable SOCKS_SERVER to
-	  compile with libsocks.a.
-
-	* ext/socket/socket.c (socks_s_open): SOCKSsocket class to access
-	  internet via SOCKS library.
-
-	* sprintf.c (f_sprintf): unsigned formats display leading double
- 	  dots for imaginary sequence of signed bit to the left.
-
-	* sprintf.c (f_sprintf): correct width and precision formatting
-	  for big integers.
-
-	* parse.y (yylex): enables negative hex/octal numbers and `_' in
-	  non-decimal numbers.
-
-	* sprintf.c (f_sprintf): %u added for unsigned decimal format.
-
-Thu Mar 13 10:24:27 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sprintf.c (f_sprintf): wrong output for bignums.
-
-	* array.c (ary_reverse_each): iterates in reverse order.
-
-	* pack.c (pack_unpack): L unpacked signed long.
-
-	* io.c (f_backquote): now returns an empty string for no output.
-
-Wed Mar 12 10:20:30 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/socks/socks.c: socket module with socks library.
-
-Mon Mar 10 20:44:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* re.c (reg_regsub): \& for substitution.  \`, \', and \+ are
-	  avaiable also.
-
-Thu Mar  6 01:47:03 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970306
-
-	* sample/rubydb.el (gud): ruby debugger emacs interface
-
-	* lib/debug.rb: ruby debugger
-
-	* parse.y (exprs): more accurate line number display.
-
-Wed Mar  5 21:31:46 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970305
-
-Tue Mar  4 12:28:32 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.c (proc_options): search through RUBYPATH and PATH for
-	  option -S.
-
-Mon Mar  3 22:44:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_status): returns nil for exception terminated
-	  threads.
-
-	* eval.c (thread_value): re-raise exceptions.
-
-Sat Mar  1 00:59:47 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): restore $! value after rescue clause, to
-	  re-raise exceptions correctly.
-
-Fri Feb 28 16:43:38 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970228
-
-Thu Feb 27 11:23:41 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_yield_0): redo raises exception
-
-	* eval.c (thread_schedule): bug in interrupt handling by rescue.
-
-Wed Feb 26 00:55:36 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (eval): forgot to restore dynamic local variable
-	  bindings.
-
-Tue Feb 25 11:22:08 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/aix_ld.rb: AIX dynamic load support (not tested).
-
-	* eval.c (rb_eval): wrong return value for defined? super.
-
-	* error.c (exception): more error check.
-
-	* re.c (reg_regsub): wrong substitution when sub expanded to null
- 	  string.
-
-Fri Feb 21 13:01:47 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970221
-
-	* eval.c (f_require): volatile added.  register variable was
- 	  recycled, so that GC did not mark that variable.
-
-	* object.c (Init_Object): forget to mark main object (was mostly
-	  ok, but made trouble with early GC.)
-
-Thu Feb 20 11:50:50 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970220
-
-Thu Feb 20 11:25:50 1997  Yasuo OHBA  <jammy@shljapan.co.jp>
-
-	* lib/date.rb: update
-
-Thu Feb 20 08:25:57 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (yylex): forgot tokfix() before rb_intern().
-
-	* lib/tk.rb (TkVariable): give up using trace_var.
-
-Wed Feb 19 00:24:35 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970219
-
-	* pack.c (pack_pack): packed by null for A specifier. must be
-	  space filled.
-
-	* pack.c (pack_unpack): bug in skipping spaces
-
-	* gc.c (xmalloc): garbage collect for every 4 Meg. allocation.
-
-	* string.c (str_split_method): limit worked wrong way.
-
-	* io.c (io_gets_method): misunderstand 0xff in binary files when
-	  $/ == nil.
-
-	* re.c (reg_regsub): re-implement.
-
-	* ext/socket/socket.c (thread_connect): remove O_NONBLOCK, which
-	  is not defined on some platform like NeXT.
-
-Mon Feb 17 13:08:30 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970217
-
-	* object.c (mod_eqq): === extended for subclass check (to use case
-	  as typecase).
-
-Sat Feb 15 02:07:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* regex.c (re_compile_pattern): wrong match backref at end of pattern.
-
-	* io.c (arg_read): now works beyond end of file.
-
-Thu Feb 13 16:21:24 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (expr): return/yield now accept normal argument format.
-
-	* parse.y (yylex): a star in `yield *x' must not be multiplication
-	  operator.
-
-Wed Feb 12 15:06:44 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* time.c (time_plus): bug in simple addition.
-
-	* eval.c (thread_raise): raise exceptions from outside.
-
-	* eval.c (Init_Thread): Thread#alive? -- alias for Thread#status.
-
-Mon Feb 10 00:38:55 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.h (Data_Make_Struct): rename macros.
-
-Sun Feb  8 11:48:13 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (f_syscall): argument offset was wrong.
-
-Fri Feb  7 18:01:17 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970207
-
-	* eval.c: add volatiles to avoid variable crobbering by longjmp().
-
-	* eval.c (f_raise): 1st argument can be the GlobalExit object now.
-
-	* array.c (ary_unshift): no longer accept more than 2 args.
-
-	* eval.c (f_raise): bug if 2nd argument is the exception.
-
-Tue Feb  4 00:37:29 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970204
-
-	* eval.c (eval): check compile errors by nerrs.
-
-	* eval.c (rb_eval): check syntax error by nerrs, not by the return
- 	  value, which may be NULL.
-
-	* eval.c (compile): Do not clear errinfo.
-
-Mon Feb  3 10:13:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (obj_extend): move real inclusion to Module#extend_object
-	  to allow redfinition.
-
-	* object.c (Init_Object): Kernel class is now Module. Object class
-	  became the true root class.
-
-	* object.c (obj_inspect): remove useless buffer.
-
-	* hash.c (any_cmp): disable interrupts and context switching.
-
-	* st.c: remove ALLOW_INTS to disable interrupt during operations.
-
-Fri Jan 31 22:10:08 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* hash.c (hash_rehash): re-register all key-value.
-
-Thu Jan 30 02:14:49 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (io_reopen): re-implement according to clone() way.
-
-	* io.c (io_clone): copy IO object.
-
-	* struct.c (struct_eql): compare elements by eql?.
-
-	* io.c (io_mode_flags): detect "rb", "wb" etc.
-
-	* io.h (FMODE_BINMODE): added.
-
-	* ext/socket/socket.c (Init_socket): undef BasicSocket.new
-
-	* file.c (Init_File): File.new(path[,mode])
-
-	* io.c (Init_IO): IO.new(fd[,mode])
-
-	* eval.c (rb_method_boundp): forgot to enable priv argument.
-
-	* object.c (Init_Object): remove `=~' from Kernel class.
-
-	* ext/socket/socket.c (open_inet): initialize sockaddr before
-	  calling bind(2).
-
-	* sample/ruby-mode.el (ruby-calculate-indent): skip comment lines
-
-Wed Jan 29 18:43:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (Init_Thread): DEFER_INTS during initializing threads.
-
-	* hash.c (Init_Hash): Hash#eql? checks for object identity.
-
-	* eval.c (thread_set_critical): wrong value assigned.
-
-Mon Jan 27 16:10:51 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (io_print): remove print_on().
-
-	* eval.c (f_missing): proper error message for undefined method
-	  without argument
-
-Sat Jan 25 23:32:32 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_sub_s): false alert - sub() does not modify string.
-
-	* array.c (ary_times): negative multiplication detected
-
-	* string.c (str_times): negative multiplication detected
-
-Fri Jan 24 10:51:39 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* time.c (time_arg): month -> 0 == "jan" == "1" == "01", little bit
-	  confusing but wanted to conform japanese style.
-
-	* version 1.0-970124
-
-Fri Jan 24 09:52:49 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* util.c (_fixpath): supports SJIS filenames on DJGPP.
-
-Thu Jan 23 16:52:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* README.EXT: update. partially translated into English.
-
-	* ext/extmk.rb.in: inherit $LDFLAGS to the final link.
-
-	* ext/socket/socket.c (Init_socket): add various constants.
-
-Mon Jan 23 11:40:59 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* eval.c (Init_Thread): allocate main_thread first to avoid crash.
-
-Thu Jan 23 02:09:26 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* gc.c (ObjectSpace): API modified. each_object method will do all
- 	  the iteration.
-
-	* eval.c (proc_call): wrong return from nested lambda.
-
-	* ext/GD/GD.c: debugged.
-
-Wed Jan 22 16:12:25 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970122
-
-	* gc.c (gc_mark): forgot to mark match->str.
-
-	* ext/GD/GD.c: GD interface module.
-
-	* eval.c (PUSH_BLOCK): wrong value pushed as the block level.
-
-Mon Jan 20 14:01:31 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_run): no context switch in the critical section.
-
-Mon Jan 20 09:40:59 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* utils.c: supports 8+3 filenames
-
-Sat Jan 18 01:23:03 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970118
-
-	* regex.c (PATFETCH): need cast to unsigned char.
-
-	* io.c (io_ctl): bug in case when arg is not a string.
-
-	* lib/tk.rb: forgot that Kernel#type returns the class name now.
-
-	* regex.c (re_search): "abc\n" =~ "^$" should not match.
-
-Fri Jan 17 12:31:37 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970117
-
-	* ruby.c (ruby_options): constant PLATFORM, which is in the {cpu}-{os}
-	  form, defined.
-
-	* configure.in: platform information embedded in the interpreter.
-
-	* regex.c (re_search): /^$/ did not match to "" by wrong exit condition.
-
-	* lib/thread.rb: re-write Mutex/Queue based on Thread.critical.
-
-	* eval.c (thread_set_critical): remove Thread.exclusive, add
-	  Thread.critical = TRUE/FALSE instead.
-
-	* re.c (reg_search): re-compile pattern if needed
-
-	* regex.c (PATFETCH): do translate at compile time
-
-Thu Jan 16 00:49:10 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* gc.c (gc_mark_frame): forgot to mark frame->cbase.
-
-	* regex.c (re_compile_pattern): /a$|b)/ causes error.
-
-	* regex.c (re_compile_pattern): /(^|b)/ causes error.
-
-	* version 1.0-970116
-
-	* re.c (Init_Regexp): set RE_CONTEXTUAL_INVALID_OPS flag.
-
-Tue Jan 14 02:09:06 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (proc_call): Proc#callをイテレータ���呼ん�時�対応
-
-	* configure.in: nextstep対応？
-
-	* eval.c (rb_eval): a[b]=c�無駄��列を割り当���
-
-	* eval.c (f_send): イテレータ���呼�れ�らイテレータ���メソッ
-	  ドを呼�．
-
-	* string.c (str_new4): match共有用�生�関数
-
-	* re.c (reg_search): match�実体(文字列)をマッ�を行��文字列�
-	  copy-on-write�共有
-
-	* string.c (str_hash): toupperを��る�件������
-
-	* array.c (sort_2): Fixnum�Stringを特別扱���高速化
-
-Mon Jan 13 11:03:53 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_create): thread�生��れる��割込�を設定���
-
-	* eval.c (Init_Thread): 割込�タイミングを100msec�
-
-Sat Jan 11 00:17:05 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* regex.c (re_search): マッ��失敗�る場�����(本当�直���？)
-
-	* io.c (io_ioctl,io_fcntl): 第2引数を�略�能�
-
-	* io.c (io_ioctl,io_fcntl): 戻り値�IO���．整数(システムコール
-	  �戻り値)を返�よ����．
-
-	* io.c (io_ctl): 引数�整数�時�対応
-
-	* io.c (io_fcntl): file.c�ら移動
-
-Fri Jan 10 17:01:47 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-970110
-
-	* ext/socket/socket.c (thread_connect): open(connect(2))�他�
-	  threadをブロック���よ��
-
-	* eval.c (thread_create): exit������exit����込む
-
-Mon Jan  6 17:42:22 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_sub_s): 文字列長より長�offset�検出
-
-	* regex.c (re_search): 空�マッ��るパターン後�$�失敗
-
-Thu Jan  2 16:36:23 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (file_reopen): File�reopen(path���IO�指定)．
-
-	* io.c (io_reopen): IO�reopen(IO�指定) -- change class��
-
-Wed Jan  1 11:09:01 1997  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (f_select): timeout�nilを返�
-
-Fri Dec 27 13:06:44 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (file_s_open): サブクラス����クラス�インスタンスを返
-	  �よ��．
-
-Fri Dec 27 08:58:27 1996  <ono@isl.nara.sharp.co.jp>
-
-	* numeric.c (flo_to_s): index()を使���．strstr()�．
-
-Thu Dec 26 01:34:17 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* lib/tk.rb: place�使�るよ��
-
-	* pack.c (endian): マクロDYNAMIC_ENDIANを指定�る�実行時�endian
-	  を判定�るよ��．
-
-	* eval.c (thread_alloc): �期化忘れ�メン�����．
-
-Wed Dec 25 00:33:19 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 1.0-961225
-
-	* io.c (Init_IO): newを無効化
-
-	* lib/tkthcore.rb: tk_call "global $foo; set foo 5"��も��るよ��
-
-	* eval.c (thread_restore_context): $~, $_�スタックを壊����
-
-	* process.c (rb_waitpid): thread�一応対応
-
-Tue Dec 24 15:20:58 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.4-961224
-
-	* configure.in: char�unsigned����も�ェック
-
-	* regex.c (SIGN_EXTEND_CHAR): __CHAR_UNSIGNED__�も対応
-
-	* pack.c (pack_unpack): 明示的�signed charを指定．
-
-Mon Dec 23 14:41:23 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.c (load_file): 標準入力�ら�スクリプト�一時ファイルを使�
-	  ��よ��
-
-	* object.c (f_integer): `0x', `0'���baseを解釈�るよ��．
-
-Fri Dec 20 01:44:39 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* Makefile.in (flock.o): flock�対応
-
-Thu Dec 19 20:13:32 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.4-961219
-
-Wed Dec 18 00:06:48 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* glob.c (glob_filename): strrchr�マクロ�場��対応
-
-	* configure.in: <sys/select.h>を�ェック
-
-	* ext/kconv/kconv.c: 1.62ベース�
-
-	* ext/kconv/kconv.c: Kconvモジュール
-
-	* string.c (str_substr): len�元�文字列より長�時�対応
-
-	* parse.y (iterator): 「$bar do .. end����許���よ��
-
-	* parse.y (iterator): FID(foo!,foo?)をdo形��イテレータ���る．
-
-	* missing/flock.c (flock): lockf()を使��代替
-
-	* file.c (file_flock): flockを実装
-
-Tue Dec 17 12:13:38 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.4-961217
-
-Fri Dec 13 02:05:03 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* configure.in: RUBYLIB�カレントを後回�(@mix/awk offline)
-
-	* dln.c: AIX�対応��？(@mix/awk offline)
-
-	* eval.c (thread_schedule): critical section�も明示的�コンテキス
-	  トスイッ��起�������
-
-	* re.c (reg_search): match�失敗��時�$~をnil�．
-
-	* re.c (reg_search): 毎回matchを生��るよ��
-
-Thu Dec 12 17:03:30 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* numeric.c (flo_to_s): 2.0.to_s -> 2.0�
-
-	* eval.c (thread_save_context): $_, $~をthread毎��存
-
-	* eval.c (thread_kill): main thread��exit(0)
-
-	* string.c (str_split_method): 間����果を返����
-
-Thu Dec 12 15:32:48 1996  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* dir.c: CYGWIN32対応
-
-	* ext/socket/socket.c: CYGWIN32対応
-
-	* io.c: CYGWIN32対応
-
-Thu Dec 12 14:43:51 1996  Jun Kuroda  <j_kuro@pluto.ai.kutech.ac.jp>
-
-	* lib/tk.rb: wish4.2も探索候補���る
-
-	* config.guess: JCC対応
-
-Thu Dec 12 00:41:17 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.4-961212
-
-	* parse.y (parse_string): """..."""�や�り無�������
-
-	* parse.y (parse_regx): %r|...|�terminatorを \ �エスケープ��る
-	  よ��
-
-	* signal.c (posix_signal): sigactionを使�signal
-
-	* configure.in: posix signal/bsd signal�検出
-
-Wed Dec 11 17:47:35 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_schedule): critical section��コンテキストスイッ
-	  ��起���よ��
-
-	* lib/thread.rb: SharedMutexクラス
-
-	* lib/jcode.rb: String#scanを使�よ��
-
-Tue Dec 10 12:21:28 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961210
-
-	* string.c (str_split_method): 正�表��()を�む時��グ
-
-	* lib/jcode.rb: �ょ��������
-
-	* string.c (tr_setup_table): 置�文字�短��る(2文字)�����グ
-
-Mon Dec  9 11:38:04 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_scan): 文字列�マッ�を行�．イテレータ���も動
-	  作�る
-
-	* regex.c (re_copy_registers): allocated��期化�れ������
-
-	* re.c (match_to_s): $~�文字列化
-
-	* re.c (match_to_a): $~を�列化��るよ��
-
-	* re.c (match_getter): レジスタ��期化�れ������
-
-Thu Dec  5 11:06:10 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_split_method): マッ������括弧�空文字列を
-	  push�る������
-
-	* string.c (str_succ): アルファベットを����文字�対応
-
-Wed Dec  4 10:48:09 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961204
-
-	* io.c (io_binmode): DJGPP��binmode対応
-
-	* sprintf.c (f_sprintf): int�範囲�数値�直接sprintf�変��る
-
-	* sprintf.c (f_sprintf): "%02s"�頼ら��
-
-	* re.c (reg_search): index�SEGV
-
-Tue Dec  3 10:09:36 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961203
-
-	* ext/extmk.rb.in (install): INSTALL_DATA�らINSTALL�変更
-
-	* dln.c: hpux対応
-
-	* string.c (str_aset_method): 負�値を�む範囲�も例外を起����
-
-	* array.c (ary_replace): 負�値を�む範囲�も例外を起����
-
-	* array.c (beg_len): beg==end�時，長�0�
-
-Mon Dec  2 14:07:12 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* configure.in: HP shl対応
-
-	* string.c (str_upto): beg > end�時無�ループ���る�を止��
-
-	* range.c (range_each): String#upto��定義�れ�場��対応
-
-	* string.c (str_split_method): "ABC".split(/(B)/)�誤動作
-
-Sat Nov 30 01:43:52 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): undef�SEGV
-
-Fri Nov 29 12:17:59 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-parse-region): %Q#..#���対応．��
-	  �，区切り文字�演算��行末��る場���対応������．
-
-	* re.c (reg_raise): 例外�もスラッシュをエスケープ
-
-	* re.c (reg_inspect): スラッシュをエスケープ
-
-	* parse.y (parse_string): `%[QqXxRr](.)..\1'�る文字列形�(テスト
-	  採用)
-
-	* parse.y (parse_qstring): '''...'''�形�
-
-	* ext/dbm/dbm.c (Init_dbm): 述語key?,value?�追加
-
-	* ext/dbm/dbm.c (Init_dbm): includes->include?
-
-	* hash.c (Init_Hash): 述語key?,value?,include?�追加
-
-	* eval.c (rb_eval): unless�else節�実行�れ��(�ーん)
-
-	* string.c (str_sub_iter_s): イテレータブロック内�マッ��行�れ
-	  る��置��れる(時�無�ループ���る)
-
-	* string.c (str_resize): len�0�時size�調整�行�れ����
-
-Thu Nov 28 00:59:54 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961128
-
-	* parse.y (parse_string): 3-quote style�文字列(例:"""abc"d"e""")
-
-	* configure.in (EXTSTATIC): extを�的�リンク�る時��ruby�dllを
-	  使�よ��
-
-	* io.c (Init_IO): gets�引数�間�����
-
-	* string.c (str_each_line): RSを明示的�指定��るよ��
-
-Wed Nov 27 12:37:46 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961127
-
-	* eval.c (rb_eval): iver defined? �selfを指定�る�を忘れ�
-
-	* io.c: gets等�RSを明示的�指定��るよ��
-
-	* ext/extmk.rb.in (install): static link�失敗
-
-Tue Nov 26 10:33:04 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961126
-
-	* string.c (str_sub_s): 置�後�文字列長��間�����
-
-Mon Nov 25 09:11:22 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* numeric.c (fix_rshift): 32以上��シフト�0を返�よ��(C�
-	  rshift�(x>>(y%32))を返����)．
-
-	* string.c (str_gsub): 置��行�れ��場�����
-
-	* string.c (str_resize): 本当�必��時��realloc
-
-Thu Nov 21 04:13:21 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* configure.in (EXTSTATIC): --with-static-linked-ext�全��モジュー
-	  ルを�的リンク�るよ��
-
-	* pack.c (pack_unpack): 行末�改行���時�も�ェックサムをスキッ
-	  プ�るよ��
-
-Wed Nov 20 21:42:51 1996  Yasuo OHBA  <jammy@shljapan.co.jp>
-
-	* configure.in: freebsd対応
-
-Wed Nov 20 10:24:24 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/extmk.rb.in (install): 通常リンク用�LDFLAGS�ダイナミックリ
-	  ンク用�DLDFALGSを分離
-
-	* ext/extmk.rb.in (install): コンパイル��功��も�を�的リンク
-	  �リスト�追加�る
-
-	* eval.c (f_missing): オブジェクト�文字列表��長��る時�ッファ
-	  を書�潰����
-
-	* process.c (proc_exec_v): fork��後例外を発生��������
-
-Tue Nov 19 13:28:15 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961119
-
-	* eval.c (mod_method_defined): Module#method_defined? �追加
-
-	* parse.y (call_args): 引数�唯一�コマンドコール��る時��グ(戻
-	  り値�展開�れ����)
-
-Mon Nov 18 13:28:18 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_sub): 失敗��時�nilを返����
-
-	* string.c (str_split_method): 検索開始�置�移動������
-
-	* ext/socket/socket.c (sock_s_getservbyaname): ��間�����
-
-	* version 0.99.3-961118
-
-	* string.c (str_sub_s): 元�文字列を置��る�を止��
-
-	* pack.c (encodes): 領域外をアクセス����
-
-Fri Nov 15 17:10:35 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* bignum.c (big_divmod): Bignum�引数�場��対応忘れ
-
-	* sample/ruby-mode.el (ruby-expr-beg): word?形���対応��完全
-
-Wed Nov 13 15:42:40 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_tr_s_bang): tr_s�tr�行�れ������
-
-	* eval.c (rb_eval): autoloadクラス��ェック
-
-	* string.c (f_sub): sub�sub!���動作������
-
-	* eval.c (thread_sleep): stop�sleep�分離
-
-Mon Nov 11 13:53:19 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961111
-
-	* numeric.c (fix_step): to, step�整数以外�場��対応
-
-	* eval.c (rb_call): dynamic var�dynamic scoping������(�れ
-	  ����)
-
-	* string.c (str_chop_bang): 長�0�文字列�chop�，領域外�アクセ
-	  ス�発生����．
-
-	* parse.y (yyerror): 割り当��領域外をアクセス����
-
-Fri Nov  8 11:54:46 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_yield): scopeをheap�コピー
-
-Thu Nov  7 09:56:53 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* numeric.c (num_coerce): �り���両辺をFloat�変��る���
-
-Wed Nov  6 10:45:13 1996  Yasuo OHBA  <jammy@shljapan.co.jp>
-
-	* lib/parsearg.rb: 第2引数を変更．
-
-Tue Nov  5 14:21:09 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961105
-
-Sat Nov  2 01:11:40 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* bignum.c (big_pow): typo (dy -> dx)
-
-	* bignum.c (big_divmod): 知ら��型�float�変����る
-
-	* numeric.c (fix_lshift): 境界�件��グ(負������)
-
-	* bignum.c (big_pow): 無駄�float��変�を����
-
-	* math.c (math_atan2): typo(x -> y)
-
-Fri Nov  1 15:30:59 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/socket/socket.c (sock_gethostname): gethostname���時��
-	  unameを使��ホスト�を得る
-
-	* ext/etc/etc.c (etc_getlogin): getlogin�NULLを返��も環境変数を
-	  調�るよ��
-
-	* object.c (krn_clone): オブジェクト�フラグもコピー
-
-	* hash.c (rb_cmp): �ッシュ�比較を`=='���`eql?'�変更
-
-	* math.c (Need_Float): Float()を使��変��る
-
-	* compar.c (cmp_gt): 以���辺を返�仕様��残�残����
-
-Thu Oct 31 12:55:51 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961031
-
-	* numeric.c (Init_Numeric): typo
-
-	* eval.c (error_print): 長��るtrace backを途中�略�る
-
-	* regex.c (re_compile_pattern): 全角�range�対応
-
-Wed Oct 30 03:03:18 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.3-961030
-
-	* io.c (f_ungetc): 関数を追加
-
-	* eval.c (dyna_var_asgn): return値忘れ
-
-Tue Oct 29 10:05:28 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (f_split): 関数splitを追加
-
-	* eval.c (rb_call): �スト��外��クラス/モジュール�定数を�照
-	  ��るよ��
-
-Mon Oct 28 09:51:03 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_sub): offset�文字�末尾��る時��ェック
-
-	* regex.c (re_match): 割り当�るレジスタ�数�1多���
-
-	* io.c (io_gets): $/ = ""�動作をperl����る(awk���ょ���
-	  �ら��)
-
-	* io.c (io_gets): $/ = nil�時少�高速化
-
-	* string.c (str_split_method): 括弧�null�マッ���時�も無視�
-	  ��よ��
-
-	* string.c (str_split_method): 括弧�マッ���分�limit�数���
-	  ��よ��．
-
-	* numeric.c (num_coerce_bin): coerce�定義を変更，2�素��列
-	  [x,y]を返�よ��
-
-	* sample/ruby-mode.el (ruby-calculate-indent): "do |aa|"�対応を改
-	  善��．
-
-Sat Oct 26 01:43:51 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/marshal/marshal.c (w_object): ビルトインクラス�サブクラスを
-	  正��復旧��るよ��
-
-	* ext/marshal/marshal.c (w_object): ユーザ定義dump�優先
-
-	* numeric.c (flo_coerce): Float()を使��定義
-
-	* numeric.c (Init_Numeric): Numeric�new�undef����
-
-	* ext/marshal/marshal.c (w_symbol): シンボル�内容(文字列)�一度�
-	  �ファイル�書�出���．
-
-	* sample/ruby-mode.el (ruby-parse-region): if/while修飾��対応�
-	  �������
-
-	* bignum.c (Init_Bignum): Bignum.newを除�
-
-	* eval.c (rb_eval): 引数評価後�ファイル��行番�を�設定
-
-	* numeric.c (flo_div): typo
-
-	* sample/ruby-mode.el (ruby-parse-region): def /, def `�対応
-
-Fri Oct 25 09:26:29 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-calculate-indent): "do |aa|"�対応
-
-	* array.c (ary_aset): index�fixnum�場��ょ��高速化
-
-	* eval.c (thread_fd_writable): 書�込���select�ェック
-
-	* array.c (ary_assoc): 無�ループ����
-
-	* eval.c (thread_wait_for): select�エラー終了��時，linux以外�
-	  �動作�正������．
-
-Thu Oct 24 08:26:48 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (backtrace): `$@'を文字列�ら�列�変更��．
-
-	* eval.c (eval): eval中�例外発生�置を�存�る
-
-	* bignum.c (bigsub): オペランド�大�比較�失敗
-
-	* re.c (reg_search): 直接�照���時�も`$~'�セット�れるよ��
-
-Wed Oct 23 10:40:10 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-961023
-
-	* ext/marshal/marshal.c (r_bytes): mallocをや�，allocaを使�
-
-	* sample/ruby-mode.el (ruby-calculate-indent): 括弧�対応を変更．
-	  ()内��インデントをレベルを���るよ��
-
-Tue Oct 22 12:59:11 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* hash.c (hash_s_new): sizeを指定��るよ��
-
-	* ext/marshal/marshal.c (w_object): dump�る深�制�を指定��るよ
-	  ��
-
-	* array.c (ary_s_new): sizeを指定��時��期化忘れ
-
-	* object.c (f_float): big2dbl�宣言忘れ．
-
-	* bignum.c (bigsub): 大���近�Bignum�士�演算��果�負��る
-	  場��間������．
-
-	* array.c (ary_aset): 置�先�置�元���長��時内容を
-	  shift(memmove)���よ��．
-
-	* ext/marshal/marshal.c (marshal_dump): ファイルフォーマット��ー
-	  ジョンを埋�込むよ��
-
-	* ext/marshal/marshal.c (tmpnam): linux-aout-dln用�定義
-
-Mon Oct 21 08:40:20 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/socket/socket.c (sock_s_gethostbyname): hostent構造体�情報
-	  を返�
-	  (sock_s_gethostbyaddr): IPアドレス�らhostent構造体を得る
-	  (sock_s_getservbyaname): getservbyname(3)
-
-Fri Oct 18 10:37:36 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-indent-to): 移動先カラム�負��る�グ
-
-	* eval.c (compile): eval�元ソース�行番��エラーを表示�る
-
-Thu Oct 17 09:52:28 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (eval): eval�文法エラー����時�SEGV
-
-	* lib/safe.rb: Restricted.eval�中��制�を加�る．
-
-	* eval.c (error_print): �ックトレース�出力．caller�例外発生�置
-	  を調整��時��題�出る(�ん���を���れ�良����…)
-
-	* eval.c (make_backtrace): �ックトレース�生�
-
-Wed Oct 16 12:56:22 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby-man-0.99.2-jp/index.html: 日本語版ドキュメント�完�(長���…)
-
-	* re.c (reg_regcomp): $=�nil�時�処�
-
-	* string.c (f_chop): $_�対�るchop
-
-Tue Oct 15 11:04:23 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-961015
-
-Mon Oct 14 18:22:38 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_schedule): BOW対応．select�-1を返��時��グ(実
-	  �do .. while�continue�先頭�ジャンプ�る���込ん���．�
-	  件�直������ ^^);;;;;
-
-	* sample/ruby-mode.el (ruby-mode-syntax-table): ?�syntax�"/"��
-	  ���ら��
-
-	* hash.c (rb_hash): name conflict
-
-Fri Oct 11 00:23:05 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-961011
-
-	* ext/marshal/marshal.c (w_object): �局動�������循環オブジェ
-	  クト対応を外��．
-
-	* hash.c (rb_hash): Fixnum�文字列�高速化
-
-	* ext/marshal/marshal.c (w_object): 無駄�データ�削除(フォーマッ
-	  ト��互�性)
-
-	* io.c (io_readline): 戻り値��備
-
-	* ext/marshal/marshal.c (marshal_dumps): MSDOS対応
-
-	* ruby.c (load_file): MSDOS対応
-
-Wed Oct  9 17:46:27 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/extmk.rb.in (install): 無駄�コピーを��る
-
-	* string.c (str_sub_method): マッ������時�String#sub�値�
-	  �����．
-
-	* eval.c (obj_extend): extend��時�object_extendedを呼�よ��
-
-Tue Oct  8 00:55:38 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_alloc): 割当�平�化
-
-	* eval.c (thread_schedule): join��グを修正
-
-	* eval.c (thread_wait_for): select��割込����対応
-
-	* eval.c (thread_select): linux�select�挙動�対応(timeout�変化
-	  �る)
-
-Mon Oct  7 09:47:19 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-961007
-
-	* eval.c (PUSH_BLOCK): the_class��存を忘れ���．
-
-	* ext/dbm/dbm.c (fdbm_store): size��存�る場所�間�����
-
-	* ext/socket/socket.c (s_accept): thread対応�������
-
-Sat Oct  5 01:32:27 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (io_readchar): EOF�例外を発生��る
-
-Fri Oct  4 11:59:54 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/marshal/marshal.c (w_object): Hash�Object�復旧�必���ッ
-	  シュテーブル�渡�れ������．
-
-	* variable.c (rb_path2class): ユーザ定義クラス�復旧�失敗����
-
-	* variable.c (rb_path2class): クラス�存在���時�エラーをFatal
-	  �らNameError�．
-
-	* range.c (range_s_new): first,last�両方Numeric�時エラー����
-	  ��．
-
-	* range.c: start->first, end->last
-
-Wed Oct  2 02:02:46 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c: DJGPP�chmod,chownを使�るよ��(��DOS�chown��る��?)
-
-	* class.c (rb_singleton_class): ビルトインクラスもextend��り特異
-	  メソッドを追加��り��るよ��
-
-	* variable.c (rb_set_class_path): ユーザ定義�トップレベルクラス�
-	  pathを設定���
-
-	* eval.c (eval): 例外�RuntimeError�化����
-
-	* eval.c (eval): eval中�例外�表��改善
-
-	* eval.c (eval): eval_with_binding��一本化
-
-	* eval.c (rb_eval): クラス/モジュール定義�中�ら定義中�クラス/モ
-	  ジュール��照��るよ��
-
-Tue Oct  1 01:40:09 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-961001
-
-	* parse.y: cur_cref�2度宣言�れ���
-
-	* signal.c (trap): SIGSEGV，SIGBUS���機種�対応
-
-	* io.c (Init_IO): 引数タイプ�指定間��
-
-Mon Sep 30 15:28:00 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-960930
-
-	* config.guess,config.sub: $host_os�正��設定�れ��
-
-	* eval.c (rb_eval): yield�正����self�設定�れ���
-
-	* eval.c (ruby_run): toplevel�例外処���グ
-
-Mon Sep 30 09:13:26 1996  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* djgpp対応
-
-Sat Sep 28 02:45:10 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-960928
-
-	* sample/ruby-mode.el (ruby-beginning-of-block): ブロック�先頭�
-	  移動(正��インデント������動作���)
-	  (ruby-end-of-block): �上
-
-	* eval.c (class_s_new): Class#new�イテレータ���呼�れ�時�
-	  initializeもイテレータ���呼�れるよ��
-
-	* signal.c (sigsegv): SEGV�backtraceを表示�るよ��
-
-Fri Sep 27 09:51:07 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-960927
-
-	* eval.c (error_print): 引数���raise�メッセージ�正��表示�
-	  れるよ��．
-
-	* eval.c (rb_longjmp): mesg�nil�時RuntimeErrorを生��る．
-
-	* eval.c (f_raise): 引数���時�対応
-
-	* eval.c (thread_mark): stack上���データ�アドレス変�を行��
-	  ��．
-
-	* eval.c (Init_Thread): 割込��間隔�1秒�長���．
-
-Thu Sep 26 16:02:45 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_schedule): 一度ペンディング��る�フラグ�クリア
-	  �れ������．
-
-	* process.c (rb_proc_exec): system/exec�引数�空文字列����場
-	  �，例外を発生������．
-
-	* config.sub/config.guess: 新��も��置���
-
-Thu Sep 26 15:41:35 1996  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* io.c (next_argv): -i.bakをBOW�DOS�対応．
-
-Thu Sep 26 01:31:43 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (io_sysread): EOF�例外
-
-	* io.c (f_readline): EOF�例外を発生�るよ��．gets�互�性���
-	  nilを返�����る
-
-	* eval.c (proc_call): lambda�ら�return�IN_BLOCKフラグ�立���
-	  ����
-
-	* eval.c (PUSH_BLOCK2): thread�対応�る��Blockを一度stack�コピー
-
-Wed Sep 25 11:54:11 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (method_call): Const::method()形�を使�るよ������．
-	  引数括弧��略����．
-
-	* sample/test.rb: Process.kill�存在を確����らテストを行�
-
-	* eval.c (eval_with_binding): 第2引数���binding(���lambda)を
-	  与�る���環境�evalを実行�るよ����
-
-	* eval.c (f_binding): �在�bindingを返�関数
-
-	* eval.c: block構造体�the_classを�存�るメン�を追加
-
-	* process.c (Init_process): kill,wait,waitpidをProcess�移動
-
-Tue Sep 24 02:44:43 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el: �����題�多���以��高速化�破棄．
-	  別�アプロー�を使��．
-
-	* lib/tk.rb (Tk.pack): 複数�ウィンドウを��付�るpack
-
-Sat Sep 21 11:08:09 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (exprs): 空文も��付�るよ��文法を変更．今���改行
-	  �連続���許�れ���．
-
-Fri Sep 20 11:39:18 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* Fail�大�を����例外�変更．
-
-	* re.c (Init_Regexp): ����例外を導入．
-
-	* eval.c (f_missing): Object�inspect���．
-
-	* object.c (inspect_i): Object#inspect�loop�対応．
-
-	* regex.c (re_search): /^$/�""�マッ������．
-
-Thu Sep 19 19:25:12 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* regex.c (re_search): /^$/��空行�マッ�����．
-
-Tue Sep 17 10:28:11 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-960917
-
-Mon Sep 16 10:47:56 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-calculate-indent): 演算�継続�場��
-	  文字列�判定��グ
-
-	* sample/ruby-mode.el (ruby-calculate-indent): else���次�行�
-	  インデント計算を正��．
-
-Sat Sep 14 08:37:19 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.2-960914
-
-Fri Sep 13 08:06:03 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/socket/socket.c (tcpaddr): port番��ntohsを��忘れ
-
-	* dln.c (link_undef): テーブル�種類�間�����．
-
-	* bignum.c (bigadd): 引�算�発生�る時�計算���起����．
-
-	* parse.y (iter_do_block): do..end�もdynamic variableを．
-
-	* bignum.c (big_pow): より正確�計算を(整数�士��float�変���
-	  �)．
-
-Thu Sep 12 13:11:55 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* variable.c (rb_set_class_path): Stringクラス��期化�れる��
-	  Stringを作����．組込�クラス��path��ら��
-
-	* parse.y (yylex): 0.1�0������
-
-	* parse.y (yylex): 行番���整�
-
-	* gc.c (oblist_live_obj): 今「生���る�全部�オブジェクトを返�
-	  イテレータ．��クラス(���サブクラス)�全部�インスタンスを返
-	  �each_object_ofも定義��．
-
-	* class.c (rb_define_class_id): 無駄�クラスを割り当����．�果
-	  ���未�期化�クラスオブジェクト�存在����．
-
-Wed Sep 11 00:56:23 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (yylex): octal�定数�検出をより正確�(090�エラー��)．
-
-	* bignum.c (big_minus): y�xより大��場��エラー．
-
-	* parse.y (yylex): エラー行番��表示をより正確�
-
-	* sample/ruby-mode.el (ruby-expr-beg): 変数��1文字�時誤動作��
-	  ��．
-
-	* sample/ruby-mode.el (ruby-calculate-indent): ?/�ループ����
-	  ��グを修正．
-
-	* enum.c (enum_min,enum_max): sort�よ��イテレータ���も動作�
-	  るよ��．
-
-	* enum.c (enum_find_all): typo
-
-Tue Sep 10 12:07:12 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* node.h (nd_line): NODE�lineをflags�押�込��オブジェクトサイ
-	  ズを�����．制�:32bit int�マシン�場�，ファイル�行数�
-	  32767を越�る�正常�表示�れ��．
-
-	* st.c: hash�compare�関数メン�を構造体�パック，クラス的�使�
-	  方を行�．1 table��り4 byte�節約．
-
-Mon Sep  9 16:35:54 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (file_truncate): �供�れ��時��特別�例外を発生�るよ
-	  ��．
-
-	* eval.c (Init_Proc): ��切��置�local-jumpを例外�．
-
-Sat Sep  7 17:06:15 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (proc_call): ��スコープ�スタック上��る時��局所脱出
-	  を有効��る．�れ�，procを生���call�る���，スコープを脱
-	  出����り，yield����味を������る．
-
-Fri Sep  6 13:30:59 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-indent-to): インデント�変�ら��時�
-	  ��ッファを変更���．
-	  (ruby-calculate-indent): ��文字列�内部�判断���ら，��行
-	  �らパーズを行�．defun�大�����時�高速化．
-	  (ruby-in-string-p): 文字列�内部����を判断�る関数(以��
-	  parse�ら分離)
-	  (ruby-parse-region): 文字列�対�る処�を���．
-	  (ruby-beginning-of-block): ブロック�先頭�
-	  (ruby-end-of-block): ブロック�末尾�(��…)
-
-Thu Sep  5 14:23:07 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (file_s_split): [dirname,basename]�split�る．
-
-	* eval.c (rb_eval): eval�中�も定数�値�正���るよ��．�れ�
-	  定数�関����的�スコープ��証�れるよ�����．
-
-	* st.c (rehash): �ッシュ拡大�系数を2�ら1.79�．割算�より良�値
-	  を返�よ��．
-
-Thu Sep  5 00:32:07 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (class_superclass) クラス�スーパークラスを返�メソッド．
-
-Wed Sep  4 16:54:56 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* random.c (f_rand): Bignumやlong�範囲を越�るFloat�対�る乱数も
-	  発生��るよ��．
-
-	* struct.c (struct_alloc): Fatal����例外を発生��るよ��(通
-	  常�使用�発生��る)．
-
-	* struct.c (struct_s_members): Struct�特異メソッド����，生�
-	  �れ�Structクラス�特異メソッド���．
-
-	* st.c (st_init_table): ruby専用�パラメタを固定���(サイ
-	  ズ�減��)
-
-Mon Sep  2 11:37:59 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* array.c (ary_shift): capa���り�も大��時��領域をREALLOC
-	(ary_pop): �上
-
-	* string.c (str_inspect): multibyte character 対応�ミス．
-	(str_inspect): unsigned char�����符�展開�れ����
-
-	* parse.y (primary): `::'をprimary�移動 Foo::Bar.Baz�エラー��
-	  ら��よ��．
-
-	* parse.y (primary): オペレータ形��特異メソッド�定義����
-
-	* random.c (f_rand): max�0�時�対応
-
-	* io.c (io_printf): 関数を定義�����インタプリタ�登録����
-	  ���．
-
-	* file.c (file_s_basename): 第2引数�無�時�エラー．
-
-Thu Aug 29 10:49:40 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (expr): イテレータ�新形��「method do .. end�形�を採
-	  用��．も��ん昔�形�も有効．
-
-	* sample/ruby-mode.el (ruby-calculate-indent): end�数�方�多�場
-	  ��もエラーを起����よ��．
-
-Wed Aug 28 09:41:36 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* numeric.c (upto,downto,step,times): 対象�fixnum�範囲を越��も
-	  動作�るよ��．
-
-Mon Aug 26 10:04:37 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* missing/setenv.c (envix): typo(missing `== 0' for memcmp)
-
-	* dir.c (dir_foreach): foreach(dir open -> read loop -> close��)
-
-	* io.c (io_foreach): foreach(file open -> read loop -> close��)
-
-	* Fatal������能�����を例外�．
-
-Sat Aug 24 23:56:37 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* bignum.c (bigdivmod): FIX2INT -> INT2FIX 大間��
-
-Fri Aug 23 18:13:03 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* regex.c (re_free_registers): allocate�����時��当然 free
-	  �������．
-
-Thu Aug 22 01:20:35 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_create): 外��ら強制終了��られ�thread�
-	  cleanup�る必��無�．
-
-Wed Aug 21 09:57:28 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_create): threadを終了���大域脱出�情報を
-	  main_thread�渡�よ��．
-
-	* parse.y (call_args): 最終引数�括弧を�略��メソッド呼出�を置
-	  �るよ��(例: print foo bar, baz == print(foo(bar,baz)))
-
-Tue Aug 20 13:37:16 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (masign): 多�代入�rest引数�動作を����空��列を代
-	  入�るよ��．
-
-	* parse.y (arg): defined?�強度をも��ょ��強�
-
-	* eval.c (error_print): -w�例外�も表示�るよ��
-
-	* eval.c (rb_eval): 新構文�対応
-	(handle_rescue): ���る例外を kind_of? ��定
-
-	* parse.y (primary): rescue�構文を変更(�定引数�追加，複数rescue)
-
-	* Fail()���りを�当�例外を使�よ��
-
-	* eval.c (thread_interrupt): Interrupt(今�non-local jump)�
-	  main-thread��られるよ��．
-
-	* eval.c (rb_longjmp): $! �内容を文字列�ら例外クラス�変更
-	(rb_raise): rb_fail �ら�称変更
-	(rb_interrupt): 例外化
-	(rb_exit): 例外化
-
-	* error.c (Init_Exception): 例外クラス�新設(文字列�サブクラス)
-
-Mon Aug 19 19:40:52 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* signal.c (trap): ���ンドラを返�よ��．
-
-Wed Aug 14 00:07:18 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_trap_eval): �ンドラ����threadをfork�る��を止
-	  ��．
-
-	* eval.c (thread_mark): thread毎� $!, $@ をマーク�忘れ
-
-	* ext/dbm/dbm.c (fdbm_delete): イテレータ���呼�れ�場�，�素
-	  �無�れ�ブロックを評価�る．
-
-	* hash.c (hash_delete): イテレータ���呼�れ�場�，�素�無�れ
-	  �ブロックを評価�る．
-
-	* array.c (ary_delete): イテレータ���呼�れ�場�，�素�無�れ
-	  �ブロックを評価�る．
-
-	* eval.c (rb_interrupt): SIGINT�デフォルトをexit�ら特別�大域脱
-	  出�．や�り割り込�れ��置�表示�無���寂����．
-
-Tue Aug 13 01:34:00 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_exit): sub-thread内��exitもstatusを�存�るよ��
-	(thread_create): 自thread内�exit�対応
-
-	* signal.c (sighandle): SIGINT�デフォルト�ンドラ�exit�るよ��
-	  (以��例外を発生����)．
-
-	* 例外�一部をFatal�．
-
-	* string.c (str_aset): 文字列�置��対象�部分文字列�����時，
-	  例外を発生����よ��
-
-	* eval.c (proc_call): Proc�中�らbreak/next�通�，他�も��通�
-	  ��よ��
-
-Mon Aug 12 14:15:09 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (krn_type): 文字列を返�
-
-	* eval.c (thread_create): sub-thread内��exit�対応
-
-	* numeric.c (fix_type): 文字列を返�
-
-	* io.c (f_p): デ�ッグ用データ表示メソッド
-
-	* eval.c (f_missing): nil/TRUE/FALSEを特別扱�
-
-	* string.c (str_inspect): 長�文字列を短縮表示．inspect���を
-	  human readable string�生��統一(re-generatable string �正��
-	  無����)．
-
-Sat Aug 10 16:54:21 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (Init_Object): kernel/nil/false/true�クラス�を変更(�
-	  文字�)，rubyスクリプト�らアクセス����よ��．
-
-	* eval.c (rb_eval): CONSTANT�アクセス先を�純化．crefを使���．
-
-	* eval.c (f_eval): 特異メソッド内�も定数�値�正���るよ��
-
-Fri Aug  9 12:23:17 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* array.c (ary_concat): append -> concat String�����
-
-	* parse.y (yylex): `$;'�使�����．
-
-	* array.c (ary_push_method): 複数引数を��付�るよ��．
-	(ary_unshift): 複数引数を��付�るよ��．
-
-	* io.c (io_popen): IO.popen�command pipe�開�るよ��．
-
-	* object.c (Init_Object): Kernel�Nilをruby script�らアクセス��
-	  ��よ��．
-
-Thu Aug  8 01:21:47 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (f_integer): 整数��変�関数
-	(f_float): 実数��変�関数
-	(f_string): 文字列��変�関数
-	(f_array): �列��変�関数
-
-	* bignum.c (big_to_i): FIXNUM�範囲���時�Bignum���返�よ�
-	  �変更．
-
-Wed Aug  7 09:28:38 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99.1-960807
-
-	* parse.y (mlhs): 「*foo = 1,2,3�タイプ�多�代入も�能�．
-
-	* object.c (Init_Object): クラスTrue/Falseをruby script�らアクセ
-	  ス����よ��．
-
-	* object.c (nil_inspect): inspect表��"nil"�
-
-	* io.c (io_print): nil�printをnil�．
-
-	* object.c (nil_to_s): nil�文字列表�を""�．
-
-Tue Aug  6 01:12:32 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* dir.c (dir_s_open): file descripter�足り��時��gc���らも
-	  �一度open���る．
-
-	* io.c (rb_fopen): ����fopen()����file descripter�足り�
-	  �時��gc���らも�一度open���る．
-
-	* ext/socket/socket.c (Init_socket): 定数�追加．
-
-	* sample/ruby-mode.el (ruby-indent-to): インデント後�カーソル�置
-	  �調整を正��．
-
-	* gc.c (gc): 割込��ェックを行���(Cコード�中�安心��
-	  malloc()�使����る��)．
-
-	* st.c (call_hash_func): signal�thread�よる割込��対応．
-
-	* sig.h (DEFER_INTS): 割込��止区間�指定
-
-	* eval.c (f_require): thread�よるrequire�競��対応(最��
-	  require�終了�る��他�thread�待�)．
-
-	* bignum.c (str2inum): 0x80000000�値�負������
-
-	* sprintf.c (f_sprintf): 文字列末尾，行末��独�`%'�対応
-
-	* bignum.c (big_cmp): 比較��果�逆��る時����．
-
-Mon Aug  5 10:58:13 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* process.c (proc_exec_v): 例外�メッセージを分�りや��．
-
-	* ext/dbm/dbm.c (fdbm_store): nilを格��る��素�削除��る
-
-	* ext/dbm/dbm.c: サイズをキャッシュ．
-
-Sat Aug  3 01:52:52 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_fail): `fail'�引数無��呼�れ�時��以��`$@'を�
-	  存�るよ��．
-
-	* eval.c (f_fail): frame�調整
-
-Fri Aug  2 11:26:21 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/socket/socket.c (bsock_setopt): val���TRUE/FALSE/Fixnumも
-	  ��付�るよ��．
-
-	* ext/socket/socket.c (Init_socket): SO_REUSEADDR等�定数�追加
-
-	* ext/md5/md5init.c: md5モジュール(��複数ファイル�ら�るモジュー
-	  ル�も�る)
-
-	* ruby.h (Make_Data_Struct): Data: object�instance変数�格� ->
-	  Data型�Object�(Dir,Time,Proc,Thread,DBM)
-
-Thu Aug  1 11:38:44 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/dbm/dbm.c (fdbm_store): value�文字�無�時�対応
-
-Wed Jul 31 10:53:42 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/socket/socket.c (open_inet): htons�必�����
-	(tcpaddr): ntohl�変���
-
-	* process.c (rb_proc_exec): execvp -> execv
-
-Tue Jul 30 17:48:33 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c: `$?'をthread local�
-
-	* Makefile.in (install): install時�stripを行�
-
-	* configure.in: install時�strip�検出
-
-	* configure.in: NEXTSTEP対応
-
-	* version 0.99.1-960730
-
-Tue Jul 30 16:40:35 1996  SHIROYAMA Takayuki  <psi@fortune.nest.or.jp>
-
-	* dln.c (dln_load): NeXT dln(mach-o)対応．configure�未対応
-
-Tue Jul 30 09:46:51 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* process.c (f_system): 複数引数も�れるよ��
-
-	* process.c (f_exec): 複数引数も�れるよ��
-
-	* array.c (ary_append): �列(���Enum)��素を破壊的�追加
-
-	* array.c (ary_plus): Enum����素を追加
-
-	* file.c (file_s_open): File.openを追加
-
-	* struct.c (struct_new): FIX2INTを忘れ���
-
-	* file.c (Init_File): exists? -> exist?
-
-	* object.c (obj_is_kind_of): is_kind_of? -> kind_of?, is_a?
-
-	* object.c (obj_is_instance_of): is_instance_of? -> instance_of?
-
-Mon Jul 29 16:40:02 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (parse_regx): �展開を行��場�，casefold�設定����
-	  �����．
-
-	* object.c (true_type): TRUE/FALSE�typeを実装．
-
-	* parse.y (read_escape): 3文字以内�octal�対応(\0��)
-
-Fri Jul 26 00:31:45 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* array.c (ary_reverse_bang): in-place��列を�転��る
-	(ary_sort_bang): in-place�sort�る
-	(ary_sort): sort���列を返�よ��
-	(ary_delete_at): 指定���置��素を削除�る
-
-	* eval.c (rb_call): stack深��ェックを毎回�行���よ��
-
-	* error.c (Warning): 実行中�warning�表示�れ������
-
-	* eval.c (compile): 例外発生を分離．
-
-	* eval.c (f_eval): 変数rb_in_evalを正��管��るよ��
-
-	* ext/dbm/dbm.c (fdbm_store): 格��るkeyを文字列�変�
-
-	* eval.c (rb_call): 無��帰��ェックを大域脱出を行�C method�も
-	  対応���．thread�stack深��ェックルー�ンを�用．
-
-	* parse.y (yylex): 第1引数�unary -/+�判定�間�����．
-
-	* parse.y (yylex): unary +�数字を余計�読ん���(ex. +5 -> 55)
-
-Thu Jul 25 12:15:04 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (yylex): 曖昧���引数�対��警告を出����．
-
-	* eval.c (iterator_p): 引数�呼ん�も正���果を返�よ��．
-
-	* parse.y: break/next/redo/retry�メソッド化．
-
-	* sample/ruby-mode.el (ruby-calculate-indent): nest��ェックミス
-
-	* sample/ruby-mode.el (ruby-parse-region): 予約語��ェックを強化
-
-	* parse.y (primary): unless/until�復活
-
-Tue Jul 23 18:50:10 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* array.c (Array#empty?), Hash.c (Hash#empty?), ext/dbm/dbm.c (DBM#empty?):
-	  空�判定述語
-
-	* eval.c (f_unless): if�逆を�るイテレータ
-
-	* eval.c (f_until): while�逆を�るイテレータ
-
-	* parse.y: not�優先順�をand/orより高�
-
-	* parse.y (expr): `!'を引数括弧を�略��call�も有効�
-
-Mon Jul 22 10:15:38 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99-960722
-
-	* array.c (ary_print_on): OFS�NIL�ェック��完全
-
-	* ruby.c  (load_file): 標準入力�ら�スクリプト�空�時�対応．
-
-	* ruby.c (proc_options): -w��引数無��時��標準入力�らスクリ
-	  プトを�る(-v���ん�終了�る)．
-
-	* array.c (ary_compact): nil��素を�り除�メソッド
-
-	* array.c (ary_nitems): nil����素を数�るメソッド
-
-Sun Jul 20 00:51:53 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.c (proc_options): -w optionを追加
-
-	* parse.y: {}�閉�����時��展開���文字列を
-
-Fri Jul 19 16:16:05 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99-960719
-
-	* lib/find.rb: 石塚版(prune�拡張付�)
-
-	* file.c (test_l): lstat�調�����．
-
-	* eval.c (f_throw): 第2引数を�略�能�．
-
-	* parse.y (str_extend): {}��スト�対応
-
-Thu Jul 18 18:25:46 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99-960718
-
-	* parse.y (str_extend): 文字列中��展開� \" ' ` / を�む事���
-	  るよ��．
-
-Tue Jul 16 15:55:31 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-parse-region): 正�表�内�エスケープ
-	  �対応
-
-	* version 0.99-960716
-
-Fri Jul 12 10:06:19 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (f_select): 引数�close check.
-
-	* ruby.c (load_file): #!行�引数�ェックを第1引数��定(実を���
-	  DOS改行対策)
-
-Wed Jul 10 17:18:35 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99-960710
-
-	* time.c (time_s_timegm/time_s_timelocal): 時間を生��るメソッド
-
-Mon Jun 17 15:59:20 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99-960617
-
-	* parse.y (yyerror): エラー表示�簡略化．
-
-Wed Jun 12 14:11:01 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* signal.c (rb_trap_exit): trap 0�threadを生����処��る．
-
-Fri Jun  7 10:17:01 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* array.c/hash.c (indexes): �列1引数�パターンを無���．�列�
-	  場��`*ary'を使��もら��．
-
-	* eval.c (thread_wait_threads): main_thread�終了�る��他�
-	  threadを待�(強制的��終了����)．
-	  (ruby_run): 他�threadを待���る間�シグナル���ら，全thread
-	  を強制終了��る．
-
-	* eval.c (rb_fail): メソッド�を`$!'�埋�込む．
-
-	* eval.c (thread_create): main_thread�コンテクスト�セーブ�れ�
-	  �場�����．
-
-	* process.c (f_sleep): 時間を指定��，thread��������状�
-	  �も対応．
-
-	* eval.c (thread_create): create後，fnを呼�出���context switch
-	  �起�る���context�fn�実行�れ�����グ．
-
-Mon Jun  3 08:03:17 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* struct.c (struct_s_def): メン��指定を文字列，シンボル(FIXNUM)
-	  �方��能���．
-
-	* ext/etc/etc.c (Init_etc): 構造体オブジェクトをGC�ら�護��．
-
-	* error.c (rb_sys_fail): nil/FALSEを引数�����付�るよ��．
-
-Thu May 30 16:19:08 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_select): EINTR�対応．
-
-Wed May 29 11:04:51 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (f_catch): catch/throwを実装��．
-
-Tue May 28 13:30:52 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99-960528
-
-	* eval.c (thread_cleanup): main thread�終了�る�他�threadも終了
-	  �る���明確化．
-
-	* signal.c (trap): SIGINT�デフォルト�設定ミス(本当�SIG_DFL��
-	  �����)．ruby���ゃん��ンドル����．
-
-	* eval.c (thread_interrupt): SIGINT�main_thread�例外を発生��る
-	  よ��．
-
-Mon May 27 15:13:31 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_status): thread�状態を返�メソッド．thread�終了
-	  を待���．
-
-	* eval.c (thread_value): 一種�promiseを実装�る���メソッド．
-
-	* eval.c (thread_join): 待���るthread�例外を起���時��，
-	  join���例外を発生�るよ��．
-
-	* eval.c (thread_create): thread��例外をpropagate���よ��．
-
-Fri May 24 10:47:53 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* enum.c (Init_Enumerable): `size' as alias to the `length'
-
-	* eval.c (thread_save_context): `$@', `$!'をスレッド毎�セーブ．
-
-	* eval.c (superclass): エラー表示をより親切�．
-
-Thu May 23 10:38:41 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.99-960523
-
-	* eval.c (superclass): エラー時�スーパークラス�を(分�れ�)表示
-	  �るよ��．
-
-Wed May 22 19:48:42 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (superclass): スーパークラス�指定�を`:'�ら`<'�変更．
-
-Tue May 21 09:27:59 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* lib/thread.rb: threadをサ�ート�るクラス(Mutex, Queue)．
-
-Mon May 20 09:39:49 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* time.c (time_cmp): 浮動�数点数も扱�るよ��．
-	(time_minus): Time - Time�浮動�数点数を返�よ��．
-
-Fri May 17 15:40:10 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* process.c (rb_proc_exec): Thread対応時�exec�直��
-	  ITIMER_VIRTUALをリセット�る．
-
-Tue May 14 02:12:44 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* signal.c (sighandle): SIGINT�対��デフォルト�例外を発生��る
-	  �をや�，status 130�exit�るよ����．
-
-	* eval.c (thread_schedule): Thread��グ���ん��れ�よ��．
-
-Fri May 10 11:21:08 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (thread_schedule): ユーザレベルThread機能．効率��も��
-	  移�性��る．今後，thread間�通信機能を実装�る予定．
-
-Thu May  2 21:22:31 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* time.c (time_timeval): struct timevalを直接返�よ��(static変数
-	  を使���)．
-
-Wed May  1 17:27:32 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* process.c (f_sleep): 整数以外�timeを指定��るよ��．
-
-Thu Apr 25 08:19:15 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (file_s_dirname): ファイル��"/"を����時，"."を返�
-	  よ��(GNU dirname�仕様)．
-
-	* file.c (file_s_basename): ��nil�0を混����るソース�残��
-	  ��．
-
-	* parse.y (exprs): エラーリカ�リを追加．
-
-Wed Apr 24 15:51:05 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_chop_bang): CRLF�場�2 bytesをchop!�るよ��．
-
-	* ext/socket/socket.c (tcp_svr_s_open): ��nil�0を混����るソー
-	  ス�残����．
-
-Tue Apr 23 18:14:25 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* pack.c (pack_pack): "A/a"��グ．余計�padding�入����．
-
-Thu Apr 18 13:02:11 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* configure.in: アーキテク�ャ�存部を別ディレクトリ�インストール
-	  �るよ��．
-
-	* parse.y (yyerror): エラー発生時�エラー行����置を表示�るよ
-	  ��．
-
-Wed Apr 17 14:22:42 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* defines.h: SAFE_SIGHANDLEを無��，�険��択�����よ��．
-
-	* io.c (io_ungetc): 新機能．
-
-	* ruby.c (load_file): ファイル�ら�読�込�方��変�����対応．
-
-	* parse.y (compile_file): ファイル�ら�入力を一度全部読�込む�を
-	  止��，getsを使������．
-
-Wed Apr 10 17:40:11 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.98
-
-Tue Apr  9 09:54:30 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (iter_block): イテレータブロック�指定をメソッド呼�出�
-	  ��定．文法�明確化．
-
-	* eval.c (rb_eval): �件��正�表��比較をinline化．
-
-	* eval.c (rb_eval): defined? � 定義情報(種別)を文字列�返�．
-
-	* node.h: NODE_BEGIN -> NODE_RESCUE, NODE_ENSURE�分離．
-
-	* eval.c (rb_eval): option -n/-p�トップレベルループ�inline展開．
-
-	* parse.y (cond0): �件�中�文字列�比較�対象����
-
-Wed Mar 27 12:33:54 1996  Tairo Nomura  <tairo@hucom.tp.titech.ac.jp>
-
-	* defines.h: NeXT対応
-
-Wed Mar 27 10:02:44 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y: 予約語�変更 continue -> next
-
-Mon Mar 25 07:34:37 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (parse_regx): o(once)オプションを追加．
-
-Fri Mar 22 14:25:35 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.97d
-
-	* eval.c (dyna_var_defined): 動的ローカル変数�定義�ェック用ルー
-	  �ン．
-
-	* parse.y (gettable): eval()�中��動的ローカル変数(既�値を��
-	  ��るも�)�検出�失敗����．
-
-Tue Mar 19 10:46:47 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.97c
-
-	* re.c (reg_s_new): compile時�segmentation fault．
-
-	* parse.y (str_extend): ��もeval�るよ��．
-
-Wed Mar 13 11:00:42 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (str_extend): 文字列中��展開��備を無���．
-
-	* parse.y: 下手�エラーリカ�リを外��．
-
-Tue Mar 12 12:30:20 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rescue): 間���ensure�も例外を������．
-
-Wed Mar  6 12:11:03 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (var_extend): 変数展開"#{}"�，任���を書�るよ���
-	  �，�れ�「変数�展開��無����ゃ����．
-
-	* regex.c (init_syntax_once): `_'をword�追加．
-
-	* regex.c (re_compile_pattern): `\w',`\W'�判定をsyntax tableを使
-	  �よ��．
-
-Tue Feb 27 10:15:32 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (obj_inspect): 表示�るインスタンス変数�無�時��，
-	  to_sを使�．
-
-	* configure.in: dln�検出を自動的�．
-
-Mon Feb 26 19:55:33 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.c (readin): read(2)�一度�ファイル�読�込���場��対応．
-
-Sat Feb 24 14:47:18 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.97b
-
-Fri Feb 23 11:26:02 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* class.c (rb_define_module): C言語�定義�れ�モジュール�PATH�
-	  設定忘れ．文字列化�core dump．
-
-	* eval.c (mod_include): 戻り値をnil�．
-
-	* version 0.97a
-
-Thu Feb 22 21:03:42 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* array.c (ary_times): 「�列*文字列��join�����を�るよ��．
-
-Wed Feb 21 11:18:09 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* configure.in : fileCountをcache．
-
-	* configure.in : Linux�ELF環境を自動的�検出��るよ�．
-
-Tue Feb 20 11:18:09 1996  Mitsuhide Satou  <mit-sato@aries.bekkoame.or.jp>
-
-	* FreeBSD dynamic link対応．
-
-Fri Feb 16 08:50:01 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (obj_inspect): インスタンス変数を����オブジェクトも
-	  正��表示�れるよ��．
-
-Wed Feb 14 16:56:44 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): �件��`2..2'��左辺�立直後��辺��立�る
-	  パターン��グ．
-
-Tue Feb 13 18:22:22 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.97
-
-Fri Feb  9 21:32:55 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* lib/tkscrollbox.rb: スクロール�tcl�設定を行�，ruby<->wish��
-	  ��通信を無���．
-
-Wed Feb  7 10:26:52 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_aref): indexをunsigned int������．
-
-	* string.c (str_aref): 範囲外�index�対��nilを返�．
-
-	* parse.y (special_local_set): `$_'�宣言無��使�れ�場��対応．
-	  関数をvariable.c�ら移動．
-
-	* string.c (str_sub): 置�開始�置�間�����．
-
-Tue Feb  6 16:17:31 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-parse-region): コメント�読�飛���
-	  �グ．
-
-Fri Feb  2 18:35:28 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* variable.c (lastline_get): `$_'を`$~'���よ��SCOPEローカル�
-	  変数���．
-
-Thu Feb  1 14:14:07 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c: stat�cacheをや��．
-
-Wed Jan 31 07:13:08 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (proc_s_new): proc�中�yieldを呼�れ�時�core dump��
-	  ��．�り���例外を発生��る．
-
-	* variable.c (rb_class2path): singleton class�対応．
-
-	* ext/etc/etc.c (Init_etc): struct_define�ターミ�ータ�nil���
-	  (0���れ��ら��)．
-
-	* ext/marshal/marshal.c: TRUE/FALSEを��出�るよ��．
-
-	* eval.c (rb_get_method_body): キャッシュ�alias対応，�����
-	  alias�キャッシュ�入�������．
-
-Tue Jan 30 09:55:13 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): NODE_BLOCK - tail recursive(������も��
-	  �)．
-
-	* io.c (io_pipe): pipe(2)を実装��．
-
-	* eval.c (rb_eval): Qselfを����．thread対応��第一歩．先��
-	  ��…．
-
-	* eval.c (proc_call): proc�中��return�proc�終了を�味�るよ�
-	  �．���，proc�ら�yield�中��return�例外を発生�る．
-
-Wed Jan 24 11:33:48 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.96a
-
-	* dir.c (dir_each): `$_'�値を変更�る�をや��．
-
-	* io.c (f_readlines): nil�FALSE�分離���り�無�ループ����
-	  ��．
-
-	* ruby.c (ruby_options): $0�設定ミス．
-
-Tue Jan 23 15:28:21 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): ``�文字列を引数��るメソッド(`)呼�出��シ
-	  ンタックスシュガー��る���．
-
-	* ruby.c (addpath): `-I'オプション�ディレクトリ�「���追加�れ
-	  るよ��変更．
-
-Fri Jan 19 11:23:12 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* dln.c (load_1): N_INDR対応(出��よ��気��る)．
-
-Thu Jan 18 18:14:20 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.texi: FALSE�nil�分離を�映��．
-
-Tue Jan 16 17:39:23 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.96 - �り���nil�FALSEを区別�る版
-
-Wed Jan 10 15:31:48 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* re.c (reg_match): マッ������時�戻り値�FALSE．
-
-	* object.c (rb_equal): `0 == nil'�TRUE��る�グ．
-
-Tue Jan  9 00:44:58 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* nil�FALSE�分離�能�変更．
-
-	* nil�FALSE�0�区別を厳密�．
-
-	* struct.c (struct_new): 引数を0�終る必��無����．
-
-	* object.c (inspect_i): オブジェクト��ェック��グ(Fixnum�core
-	  dump����)．
-
-	* range.c (range_to_s): Range�表示を改善．
-
-	* object.c (true_inspect): TRUE�表示を`TRUE'�．
-
-Mon Jan  8 15:02:33 1996  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* numeric.c (fix_mul): divide by zero error�発生��(オー�ーフロー
-	  検出��グ)
-
-	* texinfo.texをパッケージ����．
-
-Sun Dec 31 00:08:49 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): `::'��，��クラス�定義�れ�定数を�照�る
-	  よ��変更．
-
-	* string.c (Init_String): eachをeach_line�戻��．
-
-Thu Dec 28 12:31:55 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): case�演算�を`=~'�ら`==='�．
-
-	* variable.c (rb_const_set): クラス定数��定義を許�(��クラス�
-	  ���)．警告�出�．
-
-Wed Dec 27 13:27:52 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.95c
-
-	* ext/tkutil/tkutil.c: wish����も���も一応コンパイル���
-	  �るよ��．
-
-	* lib/tk.rb: 環境変数PATH�ら{wish|wish4.0}を探�よ��．
-
-Tue Dec 26 01:03:42 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-parse-region): 正�表��検出強化．
-
-	* numeric.c (fix_mul): 乗算�オー�ーフロー検出アルゴリズム��グ．
-
-	* ext/extmk.rb.in: ./install-shを使�場��PATHを調整．
-
-	* Makefile.in (install): lib/*.rbを一���インストール．
-
-	* io.c (io_each_line): イテレータ�戻り値をnil�統一．
-
-Fri Dec 22 10:34:32 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.95b
-
-	* variable.c (f_untrace_var): 第2引数を指定�る�特定�traceを削除
-	  ��るよ��．
-
-	* variable.c (f_trace_var): 第2引数�nil�時，traceを削除�る．
-
-	* lib/tk.rb (file_readable/file_writable): 第2引数をnil��る��
-	  �よるevent handler�削除．
-
-	* parse.y (variable): ドキュメント�`__FILE__'�`__LINE__'�残��
-	  ��．`caller(0)'�代用���������．
-
-	* eval.c (f_eval): $!�リセット．
-
-	* error.c (err_sprintf): �手�"\n"を付加�る�を止��．
-
-	* parse.y (f_arglist): 引数リスト直後�if/while�読�間��．
-	  lex_state�値�設定�れ������．
-
-Thu Dec 21 00:56:57 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.95a - ^^;;;
-
-	* lib/tkscrollbox.rb: パッケージ�入������．
-
-	* configure.in: FILE structure��ェック��グ．
-
-	* Makefile.in (clean): ext以下をinstall����．
-
-	* ext/socket/extconf.rb: Solaris���る-lnls��ェック．
-
-	* array.c (beg_len): �グ����…．悲��．
-
-	* version 0.95 - fj.sources�
-
-	* eval.c (rb_eval): rescue�ロジックをrb_rescue()�一元化．
-
-Wed Dec 20 19:30:58 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* Makefile.in: ���コンパイル�回�(より完全�)．
-
-	* class.c (singleton_class_new): `single'->`singleton'
-
-Tue Dec 19 07:14:33 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* io.c (closed?): IO�close�れ��る����を知る述語．
-
-	* parse.y (primary): 特異メソッド�引数�lex_state���切．
-
-	* lib/tk.rb: tcl->ruby�変�関数�用�．
-
-	* ext/extmk.rb.in (install): install�2�コンパイル�回�．
-
-	* array.c (range_beg_len): range指定���切�エラーを訂正．
-
-	* string.c (str_aref): range指定��グを削除．
-
-	* lib/tk.rb (tk_split_list): Tcl�リスト�対応．
-
-Mon Dec 18 09:58:12 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.94
-
-	* dln.c (dln_load): HP対応(未確�)
-
-	* eval.c (Init_Proc): BlockをProc�改�．
-
-Sat Dec 16 13:46:14 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): retry�イテレータ��実行���るよ��．
-
-Fri Dec 15 17:14:30 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c: proc:lambda�親��や��別�
-
-Thu Dec 14 17:21:55 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (dyna_var_asgn): イテレータブロック内�最���期化�れ�
-	  ローカル変数�有効範囲を��ブロック内��定．�れ�lambda�呼�
-	  �������．
-
-Wed Dec 13 02:30:58 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* gc.c: autoload�マークミス．
-
-	* lib/tk.rb: wish�ら�複数行�戻り値�対応
-
-	* lib/tkcomposite.rb: 複�widget
-
-	* variable.c (rb_class2path): ICLASS�対応������．
-
-	* eval.c (ruby_run): exit(0)��グ
-
-Sat Dec  9 01:21:24 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/marshal/marshal.c (dumps|load): 文字列�対�る入出力を�能�
-	  ��(���実�ファイル経由���)．
-
-Fri Dec  8 18:29:11 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/marshal/marshal.c: シンボルを一度���期化�る．
-
-Thu Dec  7 07:58:50 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (yylex): 第1引数�正�表���識�エラー����．�時�
-	  状態数を減ら��．
-
-	* string.c (str_sub): 置��スキップ幅�大����．
-
-Wed Dec  6 15:14:23 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_sub_method): sub/gsub(!��)�置��行��れ���
-	  �時，置���文字列を返�．
-
-Tue Dec  5 00:55:15 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (yylex): 括弧を�略��時�引数展開�`*'�対応．
-
-	* eval.c (ruby_run): EXIT�ンドラ内��例外�対応．
-
-	* bignum.c (big_cmp): Bignum�Fixnum�比較���る．
-
-Mon Dec  4 14:21:18 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (call_op): コンパイル時�定数��展開をや��．労多��
-	  �益少���判断����．
-
-Thu Nov 30 01:35:15 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* lib/tk.rb: {Radio,Check}Button�variable�実装．
-
-	* eval.c (rb_yield_0): Block.call��スト��時��グ．
-
-	* io.c (f_select): 常��列3�を��む�列を返�よ��
-
-	* lib/tk.rb: fileeventをruby��実装．
-
-Wed Nov 29 17:53:23 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* variable.c (rb_ivar_get): selfを常�指定�るよ��．
-
-Tue Nov 14 00:07:29 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* lib/tk.rb: Tk4.0対応
-
-Mon Nov 13 16:23:32 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.93
-
-Thu Nov  9 23:26:01 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* gc.c (gc_mark): モジュール�Mixin�マーク忘れ．
-
-	* parse.y (f_arglist): メソッド定義�引数を括弧�括ら���も良�
-	  よ����．
-
-Wed Nov  8 00:17:51 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_yield_0): 未�期化�ローカル変数����．
-
-	* eval.c (rb_eval): pendig signal��ェックをeval実行後�行�よ�
-	  ���．����シグナル�発生�検出���離れ����事��る．
-
-	* parse.y: class文�superclass部を定数�ら��拡張��．
-
-	* lib/tk.rb: Tk���全ウィンドウクラス�対応．キャン�ス�テキス
-	  ト上�オブジェクト�残���る．
-
-Tue Nov  7 08:18:37 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* signal.c (trap): ブロックを指定��るよ��．
-
-Mon Nov  6 16:44:00 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (f_caller): 呼出元�情報を得る．
-
-	* ext/tkutil/tkutil.c: wish�stderr出力を監視�る���，エラー処
-	  �を行�．
-
-	* ext/tkutil/tkutil.c: wish��通信部をC�記述．
-
-Sat Nov  4 01:12:59 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el (ruby-calculate-indent): インデント�計算を
-	  も�少�スマート���(正�表���ェック，継続行��ェック)．
-
-	* eval.c (rb_call): 無��帰を��る��，関数��ストレベル�制�
-	  を行��．
-
-	* lib/tk.rb: Tkインターフェース．���完全��．
-
-	* eval.c (rb_yield_0): 空�Block��グ．
-
-	* sample/ruby-mode.el (ruby-calculate-indent): 行末�演算��よる
-	  行継続�対応．
-
-Fri Nov  3 12:56:21 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_call): 本体�空�関数�実行��グ．
-
-	* parse.y (var_extend): 文字列�末尾�変数展開��グ．
-
-	* variable.c (rb_gvar_set): trace�評価時��変数値を与�るよ��．
-
-	* eval.c (f_require): ruby script�require�bug．
-
-	* variable.c (rb_const_get): モジュール�include対策．
-
-Thu Oct 19 13:56:06 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* dln.c (dln_load): HP対応��typo.
-
-Wed Oct 18 17:39:39 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.92
-
-	* object.c (krn_type): オブジェクト�動的�型を返�メソッド．
-
-Tue Oct 17 00:48:18 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.c (proc_options): -X オプション．chdir��を行�．
-
-	* re.c (reg_search): 漢字コードを途中�変更��るよ��．コンパイ
-	  ル時�コード�変更�れ�時��マッ��直��正�表���コンパイ
-	  ルを行�．定数KCODE�ら変数$KCODE�．
-
-	* parse.y: ()����compexprを許�．
-
-	* re.c (reg_search): メモリリークを直��．
-
-Fri Oct 13 13:19:19 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (str_sub): 文字列置���グ．
-
-	* string.c (str_strip_bang): 文字列�後��長��調整�行�れ��
-	  ����．
-
-	* re.c (reg_search): $&, $1...�ローカル��縛�るよ�����．呼
-	  �出��メソッド��マッ���スコープ�$&���値�影響���．
-	  マッ��情報をスコープ外�得������$~を使���縛情報を��
-	  出�必���る．
-
-Thu Oct 12 00:33:33 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* re.c (reg_search): String:split, String:index��$&, $1...�変化
-	  ���よ����．
-
-	* io.c (rb_str_setter): setter�仕様�変更������．
-
-	* variable.c (f_trace_var): 第2引数を�略��イテレータ���呼�
-	  るよ��．
-
-Wed Oct 11 11:50:59 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.91
-
-	* variable.c (var_setter): 引数�間�����．致命的�グ．
-
-	* io.c (pipe_open): $stderr�値�変更�れ��る時����らを
-	  �プロセス�stderr�設定�る．
-
-Mon Oct  9 13:06:33 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (mod_to_s): モジュール内�モジュール�`::'を使��表�
-	  �表示�れるよ��．
-
-	* variable.c (rb_gvar_set): 代入�よるループ�発生���よ��，
-	  trace内��代入��traceを評価���．
-
-	* struct.c (struct_equal): struct�equal判定�クラス�一致を���．
-
-Sat Oct  7 00:18:32 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_eval): defined?�機能を拡張(yield��ェック，super�
-	  存在��)．
-
-Fri Oct  6 12:06:47 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.90
-
-	* st.c (st_foreach): �素を削除��時��素数�変化�������．
-
-	* hash.c (hash_values): �グ修正．keysを返����…．
-
-	* parse.y (call_op): defined? �引数��定数�畳�込�を行���
-	  (�ェック�る��コンパイルエラー�����困る)．
-
-	* スコープ生��一部見直�．
-
-Thu Oct  5 00:29:43 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* 関数�クラス�命��則を変更��．関数�，変数��全�書���．
-
-	* gc.c (looks_pointerp): ヒープ�ェック�高速化．
-
-	* struct.c (Fstruct_aset): 構造体�対�る`[]='．
-	(struct_set): 構造体メン��対�る代入．
-
-Wed Oct  4 09:54:07 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.89
-
-	* eval.c (Frequire): ダイナミックロード�エラー�ェックを厳��．
-
-	* struct.c: struct�構造を完全�書����．以��順�付��
-	  id->value�連想�列�����，今度�構造体毎�新��クラスを生
-	  ��るよ����．
-
-	* parse.y: `::'��味をAssoc�生��らクラス(モジュール)内�定数ア
-	  クセス�変更．
-
-	* assoc.c: ���．
-
-Tue Oct  3 13:31:08 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* variable.c (Ftrace_var): trace_var, 大域変数��書�込�hookを設
-	  定�る．
-
-	* variable.c: global_entry�構�を書����．�れ�trace_varを実
-	  装��る．
-
-	* file.c (Ffile_stat): "&"�直��fstat��果も�照��るよ��．
-
-Fri Sep 29 14:15:13 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.88
-
-	* dln.c (dln_load): AIX�HP�対応��コードを入れ�(動作�未確�)．
-
-	* ext/extmk.rb.in: 必��応��，定数EXTLIBを定義�るよ��．
-
-	* dln.c (dln_load): dln独立�書���る．将��拡張用．
-	(load_1): dln_a_out����ソースコード�ライブラリを明示的�ロー
-	ド�る必����よ��変更��．
-
-Thu Sep 28 13:31:37 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/ruby-mode.el: も�����hilit19対応(正�表�)．
-
-Wed Sep 27 04:12:44 1995  Takahasi Mamoru  <taka@soum.co.jp>
-
-	* sample/test.rb: echo�-nを使���よ��(SysV対策)．
-
-	* ext/extmk.rb.in: sub -> sub!
-
-Tue Sep 26 19:12:42 1995  Yasuo OHBA  <jammy@csg.mes.co.jp>
-
-	* dln.c (dln_find_1): `.', `..'�ら始�るパス�対応��.
-
-Mon Sep 25 12:33:03 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.87
-
-Sat Sep 23 10:00:18 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (Fmod_modfunc): メソッドをprivate��，�時�特異メソッド
-	  も定義�るメソッド．パッケージ的使�方�モジュール用．
-
-Fri Sep 22 11:02:44 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* lib/find.rb: findを�供�るライブラリ
-
-	* variable.c (rb_define_variable): hook�設定を分離．
-	(add_hook): 1変数�対��複数�hookを設定��るよ��．
-
-Thu Sep 21 00:22:11 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (Fstr_frozen): 文字列�更新������を�ェック�る述
-	  語メソッド．
-
-	* hash.c (Fhash_aset): key�文字列�時，キー�内容�変化���よ�
-	  �，dup��freeze�る．
-
-Wed Sep 20 16:12:44 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.86
-
-	* ext/extmk.rb.in (have_header): キャッシュ��グ．
-
-	* ext/extmk.rb.in (have_library): 引数�順��変���．
-
-Thu Sep 14 18:00:59 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* object.c (obj_is_instance_of): is_member_of�ら�称変更．
-
-	Wed Sep 13 15:44:35 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (Fstr_tr_bang): 範囲外�文字�対�る変��グ．
-
-Tue Sep 12 14:27:58 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (Sfile_expand_path): expand_file_name -> expand_path��
-	  称変更．
-
-	* enum.c (Fenum_member): includes? -> member? ��称変更．
-
-	* string.c (Fstr_each_byte): String�ByteArray��る���基本�戻�
-	  �，each�定義をeach_byte�変更��．今���each�each_line�ア
-	  クセス��る．
-
-Mon Sep 11 18:31:17 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (cache_stat): ファイル����"&"を指定�る�直��
-	  stat(2)��果を�利用�るよ��．
-
-Fri Sep  8 14:18:51 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ruby.texi: `!', `?'�対応��アップデート．
-
-	* parse.y: defined -> defined?
-
-	* file.c: FileOp�一文字メソッドを���．一文字テスト�testメソッ
-	  ド����る．
-
-	* parse.y (yylex): 変数��後��`?'も許�．述語メソッド�後��
-	  `?'を追加�る．
-
-Thu Sep  7 20:01:33 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c: 文字列�中身を更新�るメソッド����終り�`!'を付加．
-	  `!'�無��ージョンも用���．
-
-	* parse.y: 変数��後��`!'を許�．
-
-Wed Sep  6 14:12:19 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.85
-
-	* string.c (Fstr_dup): 文字列�複製を作る
-	(Fstr_freeze): 文字列�更新��属性を設定��るよ��．
-	(Fsub/Fgsub): $_�内容をdup���ら置�を行�よ��．
-
-	* ruby.h (CLONESETUP): flags�状態もコピー
-
-Tue Sep  5 01:27:50 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* sample/test.rb: 失敗�検出を厳��．
-
-Fri Aug 25 14:31:02 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* process.c (Ffork): イテレータ���も動作�るよ��．
-
-	* version 0.84
-
-	* signal.c (sig_beg): �ンドラ�設定�れ��る時���設定���．
-
-	* ext/extmk.rb.in (create_makefile): shared object�リンク�際�
-	  `-l'オプションを指定�るよ��．
-
-	* signal.c (trap): `EXIT'�終了処�を行�設定�出�る．
-
-Wed Aug 16 00:13:22 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* signal.c (sig_beg): デフォルト��begin節�中���SIGINTを��
-	  �るよ��変更．
-
-	* io.c (io_ctl): fcntlを����システム�も対応．
-
-	* �ディレクトリ�分散����MANIFESTを����．拡張モジュール毎
-	  ��必�．
-
-	* string.c (Sstr_new,str_sub,Fstr_crypt): 引数を自動的�文字列�変
-	  ��るよ��．
-
-Sat Aug 12 00:44:02 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* string.c (Fstr_crypt): PD cryptを用���．
-
-Fri Aug 11 14:37:03 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* assoc.c (Fassoc_clone): assocもclone��るよ��．
-
-	* io.c: マクロREAD_DATA_PENDING�定義を変更(Linux対応)
-
-	* io.c (io_fptr_finalize): fptr�解放時�処�を指定��るよ��．
-
-Wed Aug  9 16:52:41 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* eval.c (rb_provided): 複数�featureをロード�る�無�ループ��
-	  �る����純�(���凶悪�)ミス．
-
-	* ext/extmk.rb.in (install): dlopen対応を行��．今��dln����
-	  分�対応�������．
-
-Tue Aug  8 14:17:06 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.83
-
-Mon Aug  7 12:47:41 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y: resque -> rescue．������typoを残��������
-	  ����よ��．�ん�今��気���������…．
-
-Thu Aug  3 18:18:05 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* missing/nt.c: NT移�用�関数群を����．
-
-	* variable.c (rb_const_get): ��例外を発生�るよ����．defined
-	  ��る以上例外を発生�����由�����(例外�発生��方�タ
-	  イプミス�検出���点�有利)．
-
-	* variable.c (Fautoload): autoloadを実装．今度�使�る�．
-
-Mon Jul 31 15:44:21 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (arg_ambiguous): 第1引数������を警告(-vオプション
-	  �有効)．
-
-	* eval.c (rb_eval): `-v'オプションを���`def'�呼�れる��必�
-	  �エラーメッセージ�出�．
-
-	* parse.y (yylex): メソッド�第1引数�判定をも��ょ��賢���．
-
-Fri Jul 28 19:04:43 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (yylex): `+/-/['�直��空白��る�����動作を変更�
-	  �(混乱�も��?)
-
-Wed Jul 26 09:21:23 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.82a
-
-	* sprintf.c (Fsprintf): `%s'�'\0'を�む文字列�対応．
-
-	* pack.c (Fpck_pack): pack��素確���グ．
-
-	* eval.c (Floop): 無�ループ�イテレータ．
-
-	* io.c (next_argv): 存在���ファイル��指定�れ�時�エラー処�
-	  �行�れ������．
-
-Mon Jul 24 17:37:34 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.82
-
-	* ext/extmk.rb.in (install): 拡張モジュールをstatic link�る場��
-	  ��モジュール�既�require�れ�����よ��featureを設定�る．
-	  �れ�拡張モジュール�機能�必��時��(static link�れ��る�
-	  �������ら�)require�れ�よ��る．
-
-	* eval.c (Frequire): `$"'�格��る文字列をフルパス���フィー�ャ
-	  ���る．rubyスクリプトをロード��時��`.rb'，オブジェクトを
-	  ロード��時��`.o'をフィー�ャ��付加�る．lisp�require�
-	  provide����(少�)近�．
-
-Thu Jul 20 12:50:05 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* Makefile.in (test): make test���るよ��．
-
-	* struct.c (struct_new): typo.
-
-	* eval.c (rb_eval): `defined'を追加．メソッド/変数/定数�定義状態
-	  を知る事�出�る．
-
-Wed Jul 19 18:04:01 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.81
-
-Mon Jul 17 14:53:51 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* variable.c (rb_const_get): 未�期化�CONSTANT�値をnil���．�
-	  ��，今後��例外�戻��能性��る．��optional�クラス/モジュー
-	  ル�存在�る��ェック������ん��．
-
-	* st.c (int): grow_factorを固定���(大嶋�ん�マシン�対応)．
-
-Fri Jul 14 00:48:40 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* ext/extmk.rb.in: キャッシュ��グを修正．
-
-	* parse.y (var_extend): #{$数字}�対応��．
-
-	* dln.c (dln_load_1): `Init_FILENAME'��を有効�．`init_*'�今後
-	  実行���．
-
-	* ext/etc/etc.c : Etcモジュールを拡張モジュール���分離．実�NT
-	  対応��布石���り�る�も�れ��．
-
-Tue Jul 11 17:12:48 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* gcc -Wall�出�warningを元�ソースを変更．
-
-	* signal.c (trap): typo.
-
-Fri Jul  7 10:08:51 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.80
-
-	* ruby.texi: texinfo documentを�供．spec�ruby.1�無����．
-
-	* signal.c (Ftrap): 割込��止中�例外発生�対応．
-
-	* eval.c (Flambda): Blockオブジェクトを返�．Block.new��義．
-
-Thu Jul  6 00:35:03 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* signal.c (Ftrap): SIG_DFL�処�を変更．SIGINT��デフォルト�ン
-	ドラを用�(例外を発生�る)．
-
-	* file.c (Sfile_expand_fname): パス�を絶対パス�展開�るメソッド．
-	(Sfile_basename): basenameを得るメソッド．拡張�も外�る．
-	(Sfile_dirname): basename��対．
-
-	* eval.c (rb_call): argument評価中�例外発生�対応．
-
-	* file.c (Ftest): `M', `A', `C'を追加.
-
-Tue Jul  4 12:36:33 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* file.c (Ftest): ファイルテスト用メソッド．
-
-	* ruby.c (proc_options): `-r'オプションを追加．
-
-	* parse.y (f_args): デフォルト引数を追加．
-
-	* eval.c (rb_call): 該当�る引数�無�時，rest引数�値をnil�．
-
-	* numeric.c (num_equal): 数値以外��比較�例外�発生����．
-	  FALSEを返�よ��．
-
-	* eval.c (masign): 多�代入�rest部�動作�������．
-
-Sat Jun 17 01:03:16 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* parse.y (gettable): 未�期化�ローカル変数��照(独立��識別�)
-	  �正��メソッド呼�出����．
-
-	* parse.y (read_escape): tokenbufを使���よ��修正．�れ��も
-	  ��，`\C-x',`\M-x'���エスケープ表�を復活．�れ�ドキュメン
-	  ト�実際�処�系�一致��．
-
-Thu Jun 15 15:42:00 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* re.c (re_regcomp): cache��ェックを改善．
-
-Mon Jun 12 18:50:51 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* version 0.79
-
-Sat Jun 10 00:25:01 1995  Yukihiro Matsumoto  <matz@caelum.co.jp>
-
-	* re.c (re_regcomp): cache判定�`$='�値も�映���．
-
-	* sample/test.rb: test suite作�．
-
-Fri Jun  9 15:58:34 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* re.c (re_regcomp): cache�判定�間�����．
-
-Fri Jun  9 00:01:35 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c (rb_yield): block構造体��期化�����メン�(iter)���
-	  ���イテレータ��スト�正��動作�����．
-
-Thu Jun  8 00:59:03 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* re.c (=~): String以外��比較�FALSEを返�よ��(例外を発生��
-	  ��)．
-
-	* extmk.rb.in: 判定��値をファイル�キャッシュ�るよ����．
-
-	* assoc.c (to_a): to_aメソッド��定義�れ������．
-
-	* eval.c (rb_eval): �期化�れ����ローカル変数��アクセスを引
-	  数�無�メソッド呼�出��解釈�る．���，(�状��)メソッド�
-	  定義�れ����場�，エラー���変数未�期化�waringを出��
-	  nilを返���る．「ruby -pe print����実行��る����味�
-	  ��り�����仕様�，���今後�検討�必���る．-- メソッ
-	  ド呼�出���る�を止�る�(以��仕様)，��もメソッド呼�出�
-	  ��る(未定義�ら�エラー)�，今�仕様�行��．
-
-	* eval.c (rb_eval): �期化�れ����ローカル変数��アクセス�
-	  (eval���)�期化�れ�事�分���時��以後�期化�れ�ローカ
-	  ル変数����．
-
-Wed Jun  7 11:58:12 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* eval.c (rb_fail): 例外処�後も`$!'をクリア���よ��．
-	  (rb_fail): `$!'変数�最後�改行を追加���．
-
-	* io.c (Fprint): privateメソッド�変更．引数を�ら��時�動作を変
-	  更(`$_'を出力�る)．
-	  (Fio_print): 出力先指定�printメソッド．
-	  (Fio_printf): 出力先指定�printfメソッド．
-
-	* parse.y: not演算��追加．優先順��低�`!'演算�．
-
-Mon Jun  5 19:00:55 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* version 0.78
-
-Fri Jun  2 17:52:03 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* ruby.c (proc_options): -Iオプション�`$:'��追加�れる順番を修
-	  正��．
-
-Fri Jun  2 00:36:34 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y: while修飾��動作を通常�while������．���，
-	  begin���while修飾����do..while型�ループ��る．
-
-Wed May 31 18:36:30 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* version 0.77
-
-Mon May 29 18:39:37 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* ext/extmk.rb.in (install): 拡張モジュールもインストール��るよ
-	  ��．
-
-Fri May 26 14:43:01 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* process.c (Fsystem): 戻り値をサブプロセス�失敗/�功を表�真�値
-	  ���．終了ステータス�`$?'�得る．
-
-Tue May 23 10:58:11 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* string.c (Fstr_upto): 無�ループ�陥ら��よ��．
-
-	* parse.y (cond): `||'����辺�制御��書�るよ��，�件���
-	  �ら��も値を�����も良�よ����．
-
-	* ext/marshal/marshal.c: オブジェクト�読�書�をメソッド��定義
-	  �コントロール��るよ��．インスタンス�`_dump_to'���メソッ
-	  ドを定義���る時���らを使�よ��．
-
-	* ext/extmk.rb.in: static linkも設定��るよ��仕様���．
-	  ext/Setup���ファイル�ディレクトリ�を記述�る���ディレク
-	  トリ�存在�るモジュール�static link�れる(��)．
-
-	* eval.c (rb_eval): `..'を文法�組�込�，`..'�`...'�動作をperl
-	  �����．
-
-Sat May 20 01:22:48 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* io.c (select): timeout時�割込�時�動作�明確化．
-
-Fri May 19 15:33:23 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* version 0.76
-
-Fri May 19 00:48:08 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* string.c (Fstr_each): イテレータブロック中�文字列�変更�行�れ
-	  �����を�ェック．�インタ�値�変����れ�例外を発生�る．
-
-	* ruby-mode.el: ruby-electric-brace�新設．
-
-Thu May 18 12:27:23 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* string.c (Fstr_tr): tr�置�対象�`\0'を�む時�正��置�を行�
-	  ���グ����．更�置�文字列をASCII順�指定����動作��
-	  ��題も���．�果���trを書������，copyright��題�
-	  無����(���)．
-
-	* gc.c (gc): the_scopeをマーク���������，ローカル変数�指
-	  ���るオブジェクト�間���解放�れる場�����．
-
-	* gc.c (mark_locations_array): 若干�高速化．
-
-Mon May 15 11:43:49 1995  Yukihiro Matsumoto  <matz@ix-02>
-
-	* ext/extmk.rb.in: Dynamic Loadモジュール�コンパイル用�ェックを
-	  行�ruby script．autoconf�近�感覚�使�る．新��モジュールを
-	  �供���人�ext�下�ディレクトリを作る���良�．必須�ファ
-	  イル�ファイル��一覧を記録��`MANIFEST'���ファイル��．必
-	  ��応��`depend'(ファイル��存関係を記述�るファイル gcc -MM
-	  �出力)，`extconf.rb'(コンパイル用�ライブラリ�関数�存在�ェッ
-	  ク�るファイル)を用���る．
-
-	* eval.c (rb_call): rubyメソッド�引数�ェック時�未�期化�
-	  jmp_bufを使用����．
-
-	* parse.y: `or'�`and'�優先順�を�����．
-
-Wed May  3 18:21:36 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* dln.c: Linux��`__.SYMDEF/'����．
-
-	* dln.c: system call�エラー�ェックを忘れ���．
-
-Wed Apr 26 09:50:56 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: イテレータブロック�変数宣言を`|'�括るよ����．�れ
-	  �イテレータ変数���時�宣言��も�を�略��る．文法�変更�
-	  久��り�．
-
-Tue Apr 25 12:04:17 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(require): load�らダイナミックロード�機能を移����．
-	  �ら�拡張��補完機能を追加��ユーザ�dln/dlopen�差を�識�る
-	  必����よ����．
-
-	* string.c(sub,sub): イテレータ���も動作�るよ��．
-
-	* object.c: init_object -> initialize.
-
-Mon Apr 24 14:22:39 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* NEWS-OS 3.4対応
-
-	* io.c: Solaris�stdio�動作���よ��．signal�EOFを返����
-	  �…．perl�も�様��題��る．
-
-Fri Apr 21 20:04:39 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.75
-
-	* signal.c: trap��������．�ーむ．
-
-	* configure: Solaris 2.3対応．
-
-	* io.c: #elif���cppも�る．
-
-	* dir.c: autoconf 2.x��対応���分
-
-Thu Apr 20 12:31:24 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.74
-
-	* env.h, gc.c, regex.c: IRIX��移�対応
-
-	* configure: dlopen用�picを生��るoption�検出���，システムタ
-	  イプを�ェック�るよ��．
-
-Tue Apr 18 19:08:17 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* gc.c(xrealloc): ptr=nil�時，malloc()�����を
-
-	* array.c(astore): 空��列�0番目��素�代入�る�size=0�
-	  realloc()を呼ん���．
-
-	* configure, glob.c: Solaris 2.x�コンパイル��るよ��
-
-Mon Apr 10 18:36:06 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.73
-
-Fri Apr  7 13:51:08 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* cons.c->assoc.c: cons�余計�機能�外��pair����機能��を
-	  残��．Enumerableをinclude�る�もや��．
-
-	* string.c(esub): 文字列置�イテレータ．perl�s///e�相当�る．
-
-Wed Apr  5 11:35:21 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.72
-
-	* EWS4800対応
-
-	* file.c: utimes���時�utimeを使�よ��．
-
-Mon Apr  3 15:19:41 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.71
-
-	* regexp.c(re_match): �グ����．match_2を削除��時�enbug��
-	  ������．
-
-Mon Mar 27 15:41:43 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* dict.c: Dict->Hash�全�的�移行．
-
-Thu Mar 23 20:30:00 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* dbm.c,socket.c: extディレクトリ�分離．
-
-	* configure: dln周り��ェック�強化
-
-	* dln.c: init�呼�出�をdlopen()版�����．
-
-Mon Mar 20 17:45:08 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* configure: autoconf 2.2�対応(一部)．
-
-Fri Mar 17 15:56:44 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* dln.c: dlopen��るマシン����らを使�よ��．���，�ゃん
-	  �動���る�����自信���．
-
-	* regex.c: virtual concatinationをや��．
-
-Thu Mar 16 11:32:57 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.70
-
-	* eval.c,regex.c: gcc��コンパイルエラー．
-
-	* io.c: inplace-edit�拡張��指定�れ��場�，も��ファイルを削
-	  除�る．
-
-Wed Mar 15 14:59:18 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.69
-
-	* eval.c(method_missing): unknown�ら�称変更．
-
-	* eval.c(single_method_added): 特異メソッド�定義�れ�時�呼�れ
-	  るメソッド．hook���使�る．実際�定義�れる直��呼�れる．
-
-Tue Mar 14 14:46:44 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby.c(proc_options): 引数�解�を自分�やる���より引数指定�
-	  方法�perl�近付��．getopt_long�も�使���．
-
-	* dir.c(glob): `{}'��ストを許�よ����．
-
-Mon Mar 13 17:56:25 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* glob.c: Glob(ワイルドカードオブジェクト)������．ワイルドカー
-	  ド�展開�Dir.glob(文字列)を使�．ワイルドカード�マッ��正�表
-	  ��代用．
-
-Fri Mar 10 18:35:46 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: Math�よ��モジュール�自分自身�extend�る．
-
-	* eval.c: クラスやモジュールを定義�る時，既����も���れ�追
-	  加定義��るよ��．���．superクラス�������ェック�る．
-
-	* regex.c: debug.
-
-	* math.c: 定数PI�Eを定義．
-
-Thu Mar  9 21:35:12 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* regex.c: EUC,SJISモード��0x80以上�8進，16進リテラルを�止．
-
-	* regex.c: クラス内�も数値リテラル・文字クラス�使�るよ���．
-
-Wed Mar  8 17:39:05 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* regex.c: \200��括弧�数以上�表��8進リテラル�解釈�る．��
-	  �，\1�ら\9���例外．
-
-	* regex.c: \9以上�リファレンスも有効���．
-
-Tue Mar  7 14:26:01 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(public/private): スコープ制御メソッド��称変更．�的�ア
-	  クセスも出�るよ�������，�採用．
-
-Mon Mar  6 19:34:32 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c(inlcude): メソッド化．動的�モジュールをインクルード��
-	  るよ��．�ら�任��オブジェクト�もモジュールをインクルード�
-	  �るメソッド `extend'も用���．
-
-	* parse.y: 文法�らincludeを削除．メソッド化．
-
-Tue Feb 28 15:35:10 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: �列，連想�列�最後�`,'を��るよ��．
-
-Fri Feb 24 13:15:43 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.68
-
-Thu Feb 23 11:19:19 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: resque節�self�値�間�����．
-
-	* eval.c(rb_clear_cache): キャッシュ�クリア�忘れ����．
-
-	* eval.c: 定数�スコープをクラス内��的スコープ�変更��．�れ�
-	  よ��，特異メソッド�ら�照�れる定数�，レシー��クラス���
-	  �，定義�れ�スコープ�クラス�定数��る．
-
-Wed Feb 22 00:51:38 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* regex.c: ignorecaseを正�表��コンパイル��指定����正��
-	  動作���．修正．
-
-	* string.c(toupper,tolower): bug fix.
-
-	* ENV,VERSION: readonly変数�ら定数�．
-
-Tue Feb 21 18:56:56 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* io.c(STDIN, STDOUT, STDERR): 定数���定義．
-
-	* io.c(select): bug fix.
-
-	* version 0.67
-
-Mon Feb 20 16:10:14 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(yylex): 定数を`%識別�'�ら，第1文字�大文字�識別��変
-	  更．�れ��も��クラス�定数����．
-
-	* eval.c: クラス定義内�self�クラス定義外部�the_class���．
-
-	* variable.c(rb_name_class): クラス�をインスタンス変数�格��る．
-
-Thu Feb 16 15:36:17 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: BLOCKをbrace�表��る文法�変更��も�を作���る．
-	  ML��示���る��応���．
-
-	* object.c(do,forever): ����．
-
-Wed Feb 15 13:20:49 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* re.c(new): 第2引数�与�られ�，��nil�������設定�るよ
-	  ��(以��nil�時�も設定を行�����)．
-
-	* parse.y(parse_regexp): 正�表�リテラル�大文字�文字を無視�る
-	  ����指定��るよ��．
-
-Tue Feb 14 00:55:33 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y: (compexpr) -> (expr).
-
-Fri Feb 10 16:30:00 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* ruby.c(load_file): scriptを読�込む時��"#!"�解�を行�よ��．
-
-	* ruby.c(readin): ファイル読�込�時�先頭�"#!"��り，��行�
-	  "ruby"���文字列を�む時，ruby�引数�与�られ��れ�，��引
-	  数も有効��る．
-
-	* parse.y(yylex): コメント行�終り�`\'����時，次�行�継続�
-	  ��る����よ����．
-
-Thu Feb  9 16:18:37 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.66
-
-	* parse.y: protectをbegin�変更．begin..end�例外処������，
-	  文括弧���も��������．
-
-Wed Feb  1 19:48:24 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* version 0.65
-
-	* string.c(str_replace): 置���る文字列�長��等��時メモリコ
-	  ピーを���．
-
-	* string.c(rindex): �グ修正．
-
-Mon Jan 30 11:23:05 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(value_expr): if��ェックを追加．
-
-	* gc.c(gc_mark): free cell�扱���グ．
-
-	* parse.y: 文法�変更(よりシンプル�)．例外を減ら��．
-
-Thu Jan 26 00:52:55 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* parse.y: 引数���連想�列を置������るよ��．��場�，
-	  連想�列リテラル�最終引数��る．
-
-	* parse.y: �列�照�`[]'内�空�もよ������．
-
-Tue Jan 24 14:45:15 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* class.c(rb_include_module): `-v'を指定��時��include��モジュー
-	  ル�クラス定数����������ェック�る．
-
-Mon Jan 23 10:42:09 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(rb_class2name): メタクラス�関�るbug fix.
-
-	* dict.c: Dict[..]�辞書�生��出�るよ��．
-
-	* array.c: Array[..]��列�生��出�るよ��．
-
-	* parse.y: 辞書�表����{a,b,..}���形�も許�よ��．
-
-Fri Jan 20 10:28:38 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* re.c(Regexp.quote): 正�表�をエスケープ�るメソッド．
-
-	* 無駄�rb_intern()を減ら��．
-
-	* parse.y: `!', `!=', `!~'を特殊演算���る．よ���れら��定義
-	  �������．
-
-Wed Jan 18 13:20:41 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: 文法�整�(unless,untilを����)．
-
-Tue Jan 17 11:11:27 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: def�メソッド�定義時��スーパークラス�メソッド��視
-	  性を継承�る．最��定義�時�今�����デフォルト(トップレベ
-	  ル�関数的，クラス定義内�通常メソッド)．
-
-	* object.c(Class#new): オブジェクト�生�時�関数的メソッド
-	  init_object�必�呼�れるよ��変更．
-
-	* eval.c: 未定義�メソッド�対��unknownメソッド�呼�れるよ��
-	  ���．エラー表示�今�������るよ��envを調節���る．
-
-Fri Jan 13 14:40:30 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* gc.c: gcを若干書����整���．�，��り変化�����よ��．
-
-	* parse.y(yylex): symbolを\sym�ら:sym�変更��．
-
-Thu Jan 12 01:39:28 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c: 新�関数 rb_eval_string()．
-
-	* gc.c: gc_mark()を一部��帰化．
-
-	* variable.c(rb_ivar_{get,set}): インスタンス変数�アクセス周り�
-	  �ェック�足り����．
-
-	* variable.c: クラス定数�インスタンス変数��ッシュテーブルを共有
-	  �るよ����．
-
-	* ruby.h: iv_tblをRBasic�らRObject�RClass�移動��．�れ�より，
-	  Object�Class,Module��インスタンス変数を�����る．�，メモ
-	  リ効率�若干�上�る．
-
-Tue Jan 10 00:58:20 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* 0.64 released
-
-	* eval.c: レシー��引数�常�iter����．
-
-	* cons.c(aref,aset): negative offset対応．
-
-Mon Jan  9 14:40:39 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: foo{..}�形�����，fooをローカル変数やクラス���
-	  ��，引数���関数型メソッド呼�出�����よ����．
-
-	* list.c -> cons.c: �称変更(クラス�も)．
-
-	* list.c: a::b::c::nilをリスト(a b c)����lisp形��ら，a::b::c
-	  をリスト(a b c)����ruby形��変更．[], []=, eachも�れ�会�
-	  ��仕様��る．
-
-	* list.c: consペア����機能を強調．仕様変更．
-
-Sat Jan  7 01:26:26 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c: 自己代入��具�修正．
-
-	* eval.c(masign): 多�代入��列もリストも�れるよ����．
-
-	* list.c: assocを2�素��列�らList(CONSペア)�変更��．
-
-Fri Jan  6 13:42:12 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: a[b]+=cやa.b+=c���自己代入形��，aやbを2度評価��
-	  ����．
-
-	* eval.c: iterator設定��グフィックス．
-
-	* list.c: Listクラスを新設．
-
-Thu Jan  5 13:55:00 1995  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: SCOPE�メモリリークを����．
-
-	* eval.c: built-inメソッド��引数�引�渡�方を変更��，�列�生
-	  �数を減ら��．
-
-	* re.c: match-dataを毎回生��る��をや��．`$~'をアクセス��時
-	  �on-demand�生��る．
-
-	* string.c etc: �必��memmoveをmemcpy�置�．
-
-	* parse.y: =~, !~�副作用��る��コンパイル時�展開����．
-
-Tue Jan  3 02:04:36 1995  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c: rest引数�bug fix.
-
-	* eval.c,gc.c: scopeをオブジェクト���．
-
-	* eval.c: env�scope�扱�を変更��．
-
-Wed Dec 28 09:46:57 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: eval�ローカル変数�追加�れ�場��対応��．
-
-	* parse.y: 演算�を�むalias�bug fix.
-
-Tue Dec 27 16:45:20 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: def A Bをalias A B�変更．
-
-	* eval.c: alias関係�bug修正．nodeをオブジェクト化��時�enbug�
-	  �よ��．
-
-	* signal.c: システムコール��定義を止��．
-
-	* io.c(select): write/except�フラグ設定��グ．
-
-	* Makefile.in: static link用オプションをMake変数���独立���．
-
-Tue Dec 20 00:46:19 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* 0.63 released
-
-	* eval.c(rb_call): super�呼�出����る．argc, argv�設定を忘れ
-	  ���．
-
-	* parse.y(read_escape): 展開エラー．
-
-	* variable.c: 定義済��変数�hookを変更���よ��．
-
-Mon Dec 19 12:01:10 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y(cond): �件��代入��置�れ�場�，`-v'オプション�警
-	  告�出るよ��．
-
-	* parse.y(**): 冪乗演算�`**'�優先順�を�項演算�より高���．
-
-	* parse.y(and,or): 優先順��低�演算�`and', `or'.
-
-	* 0.62 released.
-
-	* eval.c: �必�����PUSH_ENV, POP_ENVを減ら��．
-
-	* env.h: ENVION�らselfを����．PUSH_ENV�super�準備�����
-	  �用�る�����．
-
-	* eval.c: 下記�オブジェクト化������実行速度をも��戻��．
-
-Mon Dec 17 23:01:10 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* eval.c: env.{argv,argc}�scope.local_vars�オブジェクト化．
-
-	* eval.c: 1スコープ内�複数Blockを生�������グを修正．
-
-Fri Dec 16 15:52:06 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* parse.y: `&&'�`||'�両辺����も�件����．
-
-Thu Dec 15 00:16:04 1994  Yukihiro Matsumoto  (matz@dyna)
-
-	* eval.c(Block): Blockオブジェクトを実�．
-
-	* node.h: NODE_QLIST������．
-
-	* eval.c(rb_call): 引数��代入を���一���代入�る�をや��，
-	  一度�コピー�るよ����．
-
-	* eval.c(rb_call): ruby�記述�れ�メソッド��引数渡�をinline化．
-
-	* eval.c: イテレータ判定処��全�書���．��切�イテレータ呼�
-	  出�を����．例��「[foo(),bar()]{i|baz(i)}��fooもbarもイ
-	  テレータ���呼�出�れ*��*．
-
-	* eval.c(rb_call): SCOPE処�をinline化．メソッド呼�出��若干�高
-	  速化．
-
-Wed Dec 14 18:09:33 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* node.h: nodeもオブジェクト��る．よ��GC�回��れる．
-
-Thu Dec  8 14:17:29 1994  Yukihiro Matsumoto  (matz@ix-02)
-
-	* 0.60 released - alpha test baseline.
diff --git a/doc/ChangeLog-1.8.0 b/doc/ChangeLog-1.8.0
deleted file mode 100644
index 6d9453d011..0000000000
--- a/doc/ChangeLog-1.8.0
+++ /dev/null
@@ -1,24350 +0,0 @@
-Mon Aug  4 17:21:19 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (class_instance_method_list): methods defined in
-	  singleton class and extended modules should be included.
-	  [ruby-dev:21119]
-
-Mon Aug  4 13:05:57 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (method_proc): should specify YIELD_FUNC_SVALUE.
-	  [ruby-dev:21107]
-
-	* marshal.c (w_object): should not call w_extended for USRMARSHAL
-	  dump. [ruby-dev:21106]
-
-Mon Aug  4 10:42:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit/ui/console/testrunner.rb: Flushed io in the
-	  Console::TestRunner so that it will output immediately.
-
-Mon Aug  4 10:27:22 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.h: remove unnecessary parentheses.  [ruby-dev:20879]
-
-Mon Aug  4 10:00:47 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (receive_responses): raise exception to
-	client_thread. Thanks to William Webber.
-
-Mon Aug  4 09:22:53 2003  William Webber <wew@williamwebber.com>
-
-	* lib/net/imap.rb: convert RD to RDoc.
-
-Mon Aug  4 02:34:05 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_utime): never use utime() of C runtime.
-	  [ruby-talk:77782]
-
-Sun Aug  3 23:56:50 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_call_super): should propagate previous block for
-	  super call.  [ruby-talk:77884]
-
-Sun Aug  3 22:07:47 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkentry.rb: support 'validatecommand' option of
-	  TkEntry/TkSpinbox widget
-
-	* ext/tk/sample/{demos-en,demos-jp}/spin.rb: add
-
-Sun Aug  3 19:25:28 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (call_trace_func): clear exception flag temporarily.
-	  [ruby-dev:21090]
-
-Sun Aug  3 18:03:44 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* regex.h (re_mbctab): should refer to RUBY_EXPORT.  [ruby-ext:02199]
-
-	* lib/un.h (help): new.  % ruby -run -e help cp
-
-Sun Aug  3 08:53:06 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/{demos-en,demos-jp}/image3.rb: add
-
-	* ext/tk/lib/tkcanvas.rb: bug fix on Tk object ID management
-
-	* ext/tk/lib/tktext.rb: ditto
-
-Sun Aug  3 02:55:52 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* process.c: modify macro to detect 'MacOS X' [ruby-talk:77849]
-
-	* ext/tcltklib/lib/tcltk.rb: bug fix ( NOT MAINTAINED : only
-	  for running 'line2.rb' demo. )
-
-Sun Aug  3 02:45:06 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* numeric.c (flo_to_s): get rid of buffer overflow.
-
-Sat Aug  2 23:51:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (appendline): clearerr(3) before raising exception, since
-	  exception may be captured by rescue. [ruby-talk:77794]
-
-Sat Aug  2 09:58:13 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix --- TkGrid failed to treat
-	  RELATIVE PLACEMENT
-
-	* ext/tk/sample/demos-en/, demos-jp/: add or modify some
-	  widget demo scripts
-
-Sat Aug  2 20:59:38 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/https.rb: change an option name.
-	  :SSLCertStore -> :SSLCertificateStore.
-
-Sat Aug  2 19:18:40 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: respond_to? needs 2nd argument.
-	  Thanks Jim Bob.  [ruby-talk:77796]
-
-Sat Aug  2 15:11:54 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb (--no-undefined): annoying option removed.
-
-Sat Aug  2 14:53:55 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (pkg_config): get configuration by pkg-config.  [new]
-
-	* ext/openssl/extconf.rb: use pkg_config.
-
-Sat Aug  2 13:45:17 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c: add "#pragma weak" for __libc_ia64_register_backing_store_base.
-	  [ruby-dev:21072]
-
-Sat Aug  2 14:02:39 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (classname): find regular class name if not set.
-	  [ruby-dev:20496]
-
-Sat Aug  2 09:58:13 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix --- forgot to entry a widget class
-	  name of 'labelframe' widget
-
-	* ext/tk/sample/{demos-en,demos-jp}/{labelframe.rb,paned1.rb,
-	  paned2.rb,spin.rb}: add demo-scripts to the JP/EN widget demos
-
-Sat Aug  2 05:04:30 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkentry.rb: bug fix of TkEntry#delete
-
-	* ext/tk/samples/: bug fix of some widget demos
-
-	* ext/tk/lib/tk.rb: support <TkVariable object> == <Symbol>
-
-	* ext/tk/lib/*.rb: freeze some object for security reason
-
-Sat Aug  2 03:30:25 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_obj_singleton_methods): should not go up to
-	  ancestors unless the recursive flag is set. [ruby-list:38007]
-
-	* eval.c (rb_yield_0): expand [] to nil if avalue is set.
-	   [ruby-dev:21058]
-
-	* hash.c (env_each_key): use env_keys to avoid environment modify
-	  on the fly.
-
-	* hash.c (env_each_value): use env_values for safety.
-
-	* hash.c (env_each): allocate environment array first.
-
-Fri Aug  2 03:20:00 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* lib/yaml/store.rb (YAML::Store#initialize): filename is first
-	  argument.  Thanks Kent Dahl.
-
-Sat Aug  2 00:49:31 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: refine document.
-
-Fri Aug  1 23:57:45 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_mark_locations): no need to swap arguments.
-
-	* gc.c (STACK_LENGTH): insufficient for growing up stack
-	  architectures.
-
-	* gc.c (rb_gc, Init_stack) ditto.
-
-Fri Aug  1 23:33:36 2003  Masatoshi Seki  <mas@snow.local.>
-
-	* rubytest.rb: set dldpath on darwin.
-
-Fri Aug  1 23:07:38 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: convert RD to RDoc. Thanks William Webber.
-	  [ruby-doc:456]
-
-Fri Aug  1 19:48:56 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_emitter_write_m): forgot to declare
-	  "self", making it default to "int".
-
-	* ext/syck/rubyext.c (syck_emitter_simple_write): ditto.
-
-	* gc.c (rb_gc): should mark backing store region on IA64.
-
-Fri Aug  1 18:51:10 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* process.c: bug fix --- preprocessor errors occur on OpenBSD-current
-
-Fri Aug  1 17:13:23 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/extconf.rb: should replace literally.
-
-Fri Aug  1 16:22:57 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_check_readable, rb_io_check_writable): ensure not
-	  closed at first.
-
-	* io.c (rb_io_getline): check readable always.  (ruby-bugs:PR#1069)
-
-	* io.c (rb_io_each_byte): ditto.
-
-Fri Aug  1 16:02:46 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (READ_DATA_PENDING_PTR): cast to get rid of warnings.
-
-	* ext/socket/socket.c (unix_send_io, unix_recv_io): ditto.
-
-Fri Aug  1 15:53:24 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (isInternalCmd): shouldn't return if find end of str.
-	  [ruby-talk:77678]
-
-Fri Aug  1 13:45:14 2003  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_call_super): propagate previous block if a block is
-	  given.  [ruby-talk:77577]
-
-Fri Aug  1 09:54:38 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_fill): array length may be changed during the
-	  block execution. [ruby-talk:77579]
-
-	* array.c (rb_ary_zip): ditto.
-
-	* array.c (rb_ary_fill): ditto.
-
-	* hash.c (env_reject_bang): length may be changed during the block
-	  execution.
-
-	* hash.c (env_clear): ditto.
-
-Fri Aug  1 04:58:55 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix --- forget to eval given block to
-	  TkRoot.new method
-
-	* ext/tk/sample/tkoptdb-safeTk.rb: new sample script
-
-Fri Aug  1 00:52:58 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (Init_stack): IA64 requires STACK_LEVEL_MAX to be less than
-	  magic number when optimizer turned on, regardless of rlimit
-	  values.
-
-Thu Jul 31 23:44:00 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb: import erb-2.0.4b4.
-
-Thu Jul 31 23:04:45 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/sample/resource.en, ext/tk/sample/resource.jp:
-	  wrong resource file format
-
-	* ext/tk/lib/tk.rb: add Tk::Encoding.{encoding_convertfrom,
-	  encoding_convertto}
-
-	* ext/tk/lib/tk.rb: add TkOptionDB.read_with_encoding to read
-	  non-utf8 resource file
-
-Thu Jul 31 23:02:47 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/etc/etc.c: revert getenv()'s prototype. use it only when _WIN32
-	  is not defined.
-
-Thu Jul 31 20:52:40 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: (IMPORTANT BUG FIX) scan of event keywords
-	  doesn't work on recent versions of Tck/Tk
-
-	* ext/tk/lib/tk.rb: initialize error of instance variable on
-	  TkComposite
-
-	* ext/tk/lib/multi-tk.rb: initialize error on encoding-system on
-	  MultiTkIp
-
-	* ext/tk/lib/tk.rb: trouble on destroying widgets
-
-	* ext/tk/sample/demos-en/, demos-jp/: add JP and EN version of
-	  Ruby/Tk widget demos
-
-Thu Jul 31 15:25:12 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* array.c (rb_ary_collect): must get length of array for each
-	  iteration. reported on [ruby-talk:77500], and fixed by
-	  K.Sasada <ko1@namikilab.tuat.ac.jp> on [ruby-talk:77504]
-
-Thu Jul 31 14:11:54 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: move gmake specific features
-	  into GNUmakefile.
-
-Thu Jul 31 12:36:11 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* bin/erb, lib/erb.rb: add explicit trim mode.
-
-Thu Jul 31 04:59:10 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (rb_num_coerce_relop): export function.
-
-Thu Jul 31 08:18:00 2003  Nathaniel Talbott  <ntalbott@ruby-lang.org>
-
-	* lib/test/unit.rb: A useful return code is now set if tests fail when
-	  running automatically using the Console::TestRunner.
-
-Thu Jul 31 07:59:18 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: wrap the command-proc of TkScale --- pass
-	  the numeric object to the proc
-
-	* ext/tk/lib/tk.rb: better support for widgets created on
-	  Tk interpreter (without Ruby)
-
-	* ext/tk/lib/multi-tk.rb: a little more stable on Multiple Tk
-	  interpreters running
-
-Thu Jul 31 00:17:19 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (return_code): obsolete.
-
-	* lib/net/ftp.rb (last_response_code): new method. lastresp is now
-	  alias to last_response_code.
-
-	* lib/net/ftp.rb (last_response): new method.
-
-Wed Jul 30 23:55:44 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): check has been dropped. "_dump must return
-	  string." [ruby-dev:21024]
-
-Wed Jul 30 22:35:19 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (dir_config): allow multiple directories separated
-	  by File::PATH_SEPARATOR.
-
-	* lib/mkmf.rb (create_makefile): DLDFLAGS include $LDFLAGS again.
-	  [ruby-talk:76894]
-
-	* lib/mkmf.rb (init_mkmf): not default $LDFLAGS to LDFLAGS for
-	  ruby itself, but default $DLDFLAGS to DLDFLAGS.
-
-Wed Jul 30 16:17:06 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): marshal_dump should not take any
-	  argument.
-
-Wed Jul 30 15:54:04 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_initialize): should initialize
-	  instance variables. [ruby-talk:77362]
-
-Wed Jul 30 15:39:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): -F set compiled regular expression to $;.
-	  [ruby-talk:77381]
-
-	* string.c (Init_String): no setter type check for $;
-
-Wed Jul 30 15:10:02 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* error.c (rb_raise): snprintf() termination moved to
-	  win32/win32.c.
-
-	* win32/win32.c (valid_filename, str_grow): unused.
-
-	* win32/win32.c (NTLoginName, ChildRecord): make static.
-
-	* win32/win32.c (CreateChild): argument check.
-
-	* win32/win32.c (kill): should not call CloseHandle() when
-	  OpenProcess() failed.
-
-	* win32/win32.c (rb_w32_vsnprintf, rb_w32_snprintf): ensure buffer
-	  terminated.  [ruby-talk:69672]
-
-Wed Jul 30 10:54:10 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (get): fix wrong argument name. Thanks to William
-	  Webber.
-
-Wed Jul 30 10:31:37 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/iconv/iconv.c (iconv_convert): append unchanged portion
-	  after overflow.  [ruby-dev:21006]
-
-	* ext/iconv/extconf.rb: check if iconv() 2nd argument is const.
-
-Wed Jul 30 09:31:55 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (os2-emx): renamed from os2_emx, add flags to
-	  CFLAGS and LDFLAGS, and remove lib prefix.  [ruby-dev:20993]
-
-	* file.c (rb_file_s_rename): retry with removing new file on
-	  DOSISH.  [ruby-dev:21007]
-
-	* ext/socket/extconf.rb (sendmsg, recvmsg): check functions.
-
-	* ext/socket/socket.c (unix_send_io, unix_recv_io): raise
-	  NotImplementedError unless system calls are available.
-
-	* ext/socket/socket.c (sock_initialize): rename from sock_init()
-	  to get rid of conflict with OS/2 socket library.
-
-Wed Jul 30 07:23:14 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkentry.rb: fix lack of methods for TkEntry
-
-	* ext/tk/lib/multi-tk.rb, ext/tk/lib/tk.rb,
-	  ext/tk/lib/tkdialog.rb, ext/tk/lib/tkentry.rb,
-	  ext/tk/sample/safe-tk.rb, ext/tk/sample/tktimer2.rb: bug fix
-
-	* ext/tk/lib/multi-tk.rb: MultiTkIp.new_* accept a block to
-	  eval under the new interpreter
-
-Wed Jul 30 04:36:30 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c,
-	  ext/tk/lib/tk.rb, ext/tk/lib/tkafter.rb: additional check of
-	  Tk interpreters' status for a little more safety
-
-Wed Jul 30 02:37:12 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): if object responds to 'marshal_dump',
-	  Marshal.dump uses it to dump object.  unlike '_dump',
-	  marshal_dump returns any kind of object.
-
-	* marshal.c (r_object0): restore instance by calling
-	  'marshal_load' method.  unlike '_load', it's an instance
-	  method, to handle cyclic reference.
-
-	* marshal.c (marshal_load): all objects read from file should be
-	  tainted. [ruby-core:01325]
-
-Wed Jul 30 01:47:51 2003  Hugh Sasse  <hgs@dmu.ac.uk>
-
-	* lib/timeout.rb (Timeout::timeout): execute immediately if sec is
-	  zero.
-
-Wed Jul 30 01:36:18 2003  Aron Griffis  <ruby-talk@griffis1.net>
-
-	* ext/socket/socket.c (socks_init): typo fixed. [ruby-talk:77232]
-
-Wed Jul 30 00:48:43 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/extconf.rb: the default value for --enable-socks is
-	  taken from ENV["SOCKS_SERVER"]. [ruby-talk:77232]
-
-	* ruby.c (proc_options): add -W option. -W0 to shut up all warning
-	  messages. [ruby-talk:77227]
-
-	* error.c (rb_warn): no message will be printed if the value of
-	  $VERBOSE is "nil", i.e. perfect silence.
-
-	* ruby.c (verbose_setter): $VERBOSE value is either true, false,
-	  or nil.
-
-	* io.c (Init_IO): no "read" check for $stdin.  in addition some
-	  function names has been changed.
-
-Tue Jul 29 23:10:19 2003  Yoshida Masato  <yoshidam@yoshidam.net>
-
-	* regex.c (re_match_exec): incorrect multibyte match.
-
-Tue Jul 29 22:36:50 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb (send0): do taint check only when $SAFE > 0
-
-Tue Jul 29 19:20:34 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/fileutils.rb (install): support preserve timestamp.
-
-	* instruby.rb (install): use FileUtils::install preserve mode.
-
-	* lib/un.rb: new.  % ruby -run -e cp -- -p foo bar
-
-	* lib/mkmf.rb: use un.rb instead of ftools.rb.
-
-	* MANIFEST: add lib/un.rb.
-
-	* ext/extmk.rb (INSTALL_PROG, INSTALL_DATA): modify verbose messages.
-
-Tue Jul 29 18:55:22 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: unify coding style.
-
-	* lib/net/http.rb: ditto.
-
-Tue Jul 29 17:27:59 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ruby.h (LLONG_MIN): fix typo.
-
-Tue Jul 29 16:38:44 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP::send0): add taint check.
-
-Tue Jul 29 15:41:02 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* instruby.rb (install): preserve the timestamp for Mac OS X ranlib
-	  problem.
-
-Tue Jul 29 01:14:51 2003  Rick Ohnemus  <rick_ohnemus@acm.org>
-
-	* ruby.h (LLONG_MIN): wrong value.
-
-Mon Jul 28 22:57:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_getc): $stdin may not be IO. [ruby-dev:20973]
-
-Tue Jul 29 16:20:36 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: bug fix and
-	  change mainloop_abort_on_no_widget_cmd => mainloop_abort_on_exception
-	  ( to avoid thread timing trouble on accessing destroyed widgets )
-
-	* ext/tk/lib/multi-tk.rb: change default mode of
-	  mainloop_abort_on_exception on multi-tk.rb
-
-	* ext/tk/lib/multi-tk.rb: fix a bug of the procedure for
-	  'Delete' button on the safe-Tk frmae
-
-Tue Jul 29 12:22:28 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/token.c: prefixed many constants and definitions
-	  with YAML_ to avoid name clash.
-
-	* ext/syck/gram.c: ditto.
-
-	* ext/syck/gram.h: ditto.
-
-Tue Jul 29 12:15:37 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/etc/etc.c: add real prototype to getenv().
-
-	* win32/win32.h: add arguments to definitions of functions if possible.
-
-Tue Jul 29 08:05:30 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tkdialog.rb, ext/tk/lib/tktext.rb,
-	  ext/tk/sample/tkbiff.rb, ext/tk/sample/tkdialog.rb,
-	  ext/tk/sample/tkform.rb: bug fix ( tested with Ruby/Tk widget demo )
-
-Tue Jul 29 04:22:08 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/syck.h: Added 'syck' yacc prefixes.
-
-	* ext/syck/gram.c: ditto.
-
-	* ext/syck/token.c: ditto.
-
-	* ext/syck: Added ruby.h reference to source files.
-
-Tue Jul 29 03:53:28 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/net/https.rb (use_ssl=): raise ProtocolError if
-	  connection is set up already.
-
-Tue Jul 29 01:45:32 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: use RTEST()
-
-Tue Jul 29 01:24:32 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: bug fix
-
-	* ext/tk/lib/multi-tk.rb: bug fix and pack options are pssed
-	  to the safeTk container
-
-	* ext/tk/sample/safe-tk.rb: add example for pack options of
-	  safeTk container
-
-Mon Jul 28 23:23:08 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (Init_File): IO should include File::Const.
-	  [ruby-dev:20964]
-
-Mon Jul 28 18:53:03 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/openssl/extconf.rb: check again after pkg-config for MinGW on
-	  Cygwin.
-
-Mon Jul 28 15:32:04 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_gets): only "gets" should set $_.
-
-	* ext/stringio/stringio.c (strio_getline): should not set $_ here.
-
-	* io.c (argf_to_s): argf.to_s returns "ARGF".
-
-	* io.c (set_defout_var, set_deferr_var): make $defout and $deferr
-	  obsolete.
-
-	* io.c (set_input_var, set_output_var): allow $stdin, $stdout,
-	  $stderr not to be instance of IO.
-
-	* io.c (rb_f_readline): forward method to current_file. gets,
-	  readline, readlines, getc, readchar, tell, seek, pos=, rewind,
-	  fileno, to_io, eof, each_line, each_byte, binmode, and closed?
-	  as well.
-
-	* io.c (argf_forward): utility function to forward method to
-	  current_file.
-
-Mon Jul 28 06:10:13 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: bug fix
-
-	* ext/lib/tk/multi-tk.rb: bug fix
-
-	* ext/lib/tk/multi-tk.rb: add methods depend on Tcl's 'interp' command
-
-	* ext/lib/tk/multi-tk.rb: suppot safe-level control of each interpreter
-
-Mon Jul 28 03:08:47 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: each() should return self.
-
-Mon Jul 28 01:35:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): defer rb_str_modify() to actual
-	  modify point.  other methods, replace, tr, delete, squeeze,
-	  lstrip, and rstrip as well.
-
-	* string.c (rb_str_rstrip_bang): remove trailing '\0' at the end
-	  of string.
-
-	* string.c (rb_str_lstrip_bang): do not strip '\0' from the left.
-
-Sun Jul 27 21:16:30 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/openssl/extconf.rb: better support MinGW.  add
-	  dir_config("kerberos") and with_config("pkg-config").
-
-	* mkconfig.rb: initialize global variables to avoid warnings.
-
-Sun Jul 27 19:35:06 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: add some methods to support
-	  multiple interpreters (low level)
-
-	* ext/tk/lib/multi-tk.rb: new library to support multiple Tk
-	  interpreters (high level)
-
-	* ext/tcltklib/demo/safeTk.rb: new sample of safeTk interpreter
-
-	* ext/tk/sample/safe-tk.rb: new sample of multi-tk.rb
-
-	* ext/tk/lib/tk.rb: bug fix and add feature to supprt multi-tk
-
-	* ext/tk/lib/tkafter.rb: ditto
-
-Sun Jul 27 14:43:37 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/debug.rb: fix breakpoint parameter parsing/checking.
-	  (?:(file|class):)(line_number|method)
-
-Sun Jul 27 10:21:28 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/unix.rb: add UNIXFileOwner, UNIXFileGroup.
-
-Sun Jul 27 03:10:43 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (io_reopen): avoid dup2() equal handles not to close itself and
-	  to get rid of a msvcrt bug.  [ruby-dev:20919]
-
-Sun Jul 27 00:37:16 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/tmpdir.rb: use GetWindowsDirectory, not GetSystemDirectory.
-	  [ruby-talk:77073]
-
-Sat Jul 26 21:25:21 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* io.c (rb_fdopen): set errno if it's zero on win32 platforms.
-
-	* ext/openssl/ossl_ssl.c (TO_SOCKET): define special version when
-	  _WIN32 is defined. this is ruby's problem, not OpenSSL.
-
-	* win32/win32.c: remove some old comments.
-
-Sat Jul 26 14:26:57 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/tk/lib/tk.rb (TkCore::chooseDirectory): back up wrongly
-	  removed method.
-
-Sat Jul 26 14:14:12 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/stringio/stringio.c: includes Enumerable as well as IO.
-	  [ruby-talk:77058]
-
-Sat Jul 26 07:00:53 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb: fix % line.
-
-Sat Jul 26 05:31:09 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl.h: fix comment.
-
-	* ext/openssl/ossl.c (ossl_debug): should enable if no va-args
-	  macro supplied.
-
-Sat Jul 26 04:04:36 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: refine va-args macro detection.
-	  [ruby-talk:76983]
-
-Sat Jul 26 01:33:51 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_setup): need to pass the real
-	  socket to SSL_get_fd on native win32 platforms.
-
-Sat Jul 26 01:20:29 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_const_missing): "const_missing" should not
-	  appear in the caller(); add call frame adjustment.
-
-	* eval.c (rb_method_missing): simplify call frame adjustment.
-
-Fri Jul 26 00:04:25 2003  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
-
-	* ext/openssl/sample: add samples.
-	  - cert2text.rb: dump certificate file as text.
-	  - crlstore.rb: CRL store implementation.  Fetch CRL via HTTP when
-	    http-access2 is installed.
-	  - certstore.rb: certificate store implementation.
-	  - cert_store_view.rb: certificate store viewer with FXRuby.  Uses
-	    c_rehash.rb, crlstore.rb and certstore.rb.
-
-Fri Jul 25 16:43:03 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: add TclTkIp#create_slave,
-	  TclTkIp#_make_safe and TclTkIp#safe?
-
-	* ext/tcltklib/MANUAL.euc: modify descriptions
-
-	* ext/tk/lib/tk.rb: bug fix [ruby-talk:76980] and modify to
-	  support multi Tk IPs
-
-	* ext/tk/lib/tkafter.rb: modify to support multi Tk IPs
-
-Fri Jul 25 15:47:39 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: add check for BN_rand_range() and
-	  BN_pseudo_rand_range().
-
-	* ext/openssl/ossl_bn.c (ossl_bn_s_rand_range): should raise
-	  NotImplementedError if BN_rand_range() wan not defined.
-
-	* ext/openssl/ossl_bn.c (ossl_bn_s_pseudo_rand_range): should raise
-	  NotImplementedError if BN_pseudo_rand_range() wan not defined.
-
-	* ext/openssl/ossl_pkcs7.c (ossl_pkcs7_s_encrypt): avoid compiler
-	  warning for OpenSSL-0.9.6.
-
-	* ext/openssl/ossl_pkcs7.c (ossl_pkcs7si_initialize): ditto.
-
-Fri Jul 25 14:34:55 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (tcp_s_gethostbyname): was using
-	  uninitialized size_t value. [ruby-talk:76946]
-
-Fri Jul 25 13:38:38 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* re.c (rb_reg_options_m): use rb_reg_options() to mask internal
-	  flags.
-
-	* re.c (rb_reg_initialize_m): allow nil as third argument and
-	  ignore, and mask code flags if the argument is given.
-	  [ruby-dev:20885]
-
-	* re.c (rb_reg_options): get common flags directly.
-
-Fri Jul 25 03:52:21 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* lib/yaml/dbm.rb: replace indexes with values_at.
-
-Fri Jul 25 02:55:59 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: add check for libsocket and libnsl.
-
-	* ext/openssl/extconf.rb: use pkg-config to build CFLAGS and LDFLAGS.
-
-Fri Jul 25 01:27:59 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/emitter.c (syck_emitter_flush): accepts count
-	  of bytes to flush.  anchor offsets now functional.
-
-	* ext/syck/syck.h (syck_emitter_flush): ditto.
-
-	* ext/syck/rubyext.c: ditto.
-
-	* ext/syck/token.c: URI escaping now supported.
-
-Thu Jul 24 16:41:31 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (have_type): check if a type is defined.
-
-	* lib/mkmf.rb (check_sizeof): check size of a type.
-
-	* ext/dbm/extconf.rb: check if type DBM is defined.
-	  [ruby-talk:76693]
-
-Thu Jul 24 16:18:40 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ChangeLog (add-log-time-format): "%c" contains timezone on
-	  XEmacs.
-
-Thu Jul 24 16:05:22 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (AC_C_VOLATILE): check if volatile works.
-
-	* defines.h (volatile): removed.
-
-	* eval.c (rb_thread_group): Thread#group.  [new]
-
-Thu Jul 24 15:50:42 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/extconf.rb: add check for win32 OpenSSL libraries.
-
-	* ext/openssl/extconf.rb: add check for __VA_ARGS__.
-
-	* ext/openssl/ossl.h: avoid non C99 compiler errors.
-
-Thu Jul 24 13:32:56 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (thgroup_add): no warning for terminated threads.
-
-Thu Jul 24 13:09:26 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pathname.rb: added.
-
-Thu Jul 24 11:21:10 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/io/wait/extconf.rb: removed unnecessary backward
-	  compatibility stuff.
-
-Thu Jul 24 11:09:10 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/openssl/extconf.rb: revert use of dir_config.
-
-Thu Jul 24 09:58:32 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/Win32API/lib/win32/resolv.rb: added.
-
-	* lib/resolv.rb: support Win32 platforms. based on Tietew's work
-	  [ruby-dev:15573].
-
-Thu Jul 24 04:05:46 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ssl.h: undef X509_NAME and PKCS7_SIGNER_INFO to
-	  avoid name confliction on mswin32.
-
-	* ext/openssl/ssl.c (ossl_protect_obj2bio): avoid VC++ warnings
-	  in function prototype.
-
-	* ext/openssl/ssl.c (ossl_protect_membio2str): ditto.
-
-	* ext/openssl/ssl.c (ossl_protect_x509_ary2sk): ditto.
-
-Thu Jul 24 03:44:04 2003  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* ext/openssl/extconf.rb: cut check for OpenSSL version
-
-Thu Jul 24 03:41:30 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/tcltklib/tcltklib.c (ip_init): need at least one statement after
-	  label.
-
-Thu Jul 24 01:48:03 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::[]): should return StringIO (or
-	  Tempfile) for multipart/form.
-
-	* variable.c (rb_define_const): give warning for non constant
-	  name. [ruby-core:01287]
-
-Thu Jul 24 01:51:08 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick: imported.
-
-	* MANIFEST: added webrick files.
-
-Thu Jul 24 01:32:04 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/tmpdir.rb (tmpdir): new method.  remove TMPDIR.
-	  use GetSystemWindowsDirectory(GetSystemDirectory), not GetTempPath.
-
-Thu Jul 24 01:08:43 2003  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl: imported.
-
-Wed Jul 23 23:06:59 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* file.c (DOSISH): better Cygwin support.
-
-Wed Jul 23 19:13:21 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_split_m): the receiver may be empty string.
-
-Wed Jul 23 18:43:00 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb: import erb-2.0.4b1.
-
-Wed Jul 23 18:21:52 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/io/wait: imported.
-
-Wed Jul 23 16:07:35 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* process.c: unify indentation
-
-	* configure.in: add --enable-setreuid option
-
-	* ext/tcltklib/tcltklib.c: TclTkIp.new accepts 'ip-name' and 'options'
-
-	* ext/tk/lib/tk.rb: support arguments of TclTkIp.new
-
-	* ext/tk/lib/tk*.rb: preparations for multi-Tk interpreter support
-
-Wed Jul 23 15:49:01 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_lstrip_bang): strip NUL along with white
-	  spaces. [ruby-talk:76659]
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-Wed Jul 23 14:19:17 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (log_src, checking_for, create_header):
-	  Logging.message is printf like format.
-
-Wed Jul 23 10:11:15 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/iconv/iconv.c (check_iconv): check if Iconv instance.
-
-	* ext/iconv/iconv.c (iconv_convert): stringify argument.
-
-Wed Jul 23 02:39:46 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* process.c: add a module for raw syscalls to control UID/GID
-
-	* process.c: add modules for portable UID/GID control
-
-Tue Jul 22 19:16:40 2003  Tanaka Akira  <akr@m17n.org>
-
-	* ext/iconv/iconv.c (iconv_failure_initialize): limit
-	  inspect message.  [ruby-dev:20785]
-
-	* ext/iconv/iconv.c (rb_str_derive): share with original
-	  string if possible.  [ruby-dev:20785]
-
-Tue Jul 22 17:22:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_const_missing): new method. [ruby-core:00441]
-
-	* variable.c (rb_const_get_at): allow "const_missing" hook.
-
-	* variable.c (rb_const_get_0): ditto.
-
-	* eval.c (method_missing): rename from rb_undefined to clarify.
-
-	* eval.c (ruby_finalize_0): update exit status if any of END proc
-	  raises SystemExit. [ruby-core:01256]
-
-	* signal.c (rb_trap_exit): wrap rb_eval_cmd
-
-	* eval.c (rb_exec_end_proc): reduce rb_protect().
-
-Tue Jul 22 17:15:57 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* MANIFEST (lib/cgi/session/pstore.rb, lib/yaml/baseemitter.rb):
-	  added.
-
-Tue Jul 22 10:52:19 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* lib/tmpdir.rb: remove charcters after "\000" and regularize path.
-
-Tue Jul 22 02:22:45 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_equal): should not use rb_equal().
-
-	* string.c (rb_str_equal): should return nil for non string
-	  operand to conform comparable convention. [ruby-dev:20759]
-
-Tue Jul 22 00:19:19 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tmpdir.rb: new library to get temporary directory path,
-	  using GetTempPath on Win32 environment.
-
-	* lib/tempfile.rb: now uses tmpdir.rb.
-
-	* lib/cgi/session.rb, ib/drb/unix.rb: ditto.
-
-Mon Jul 21 01:53:43 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_string_value_cstr): check null byte in the string
-	  before retrieving C ptr.  accessed via macro StringValueCStr.
-
-	* file.c: use StringValueCStr to retrieve paths to system calls.
-
-	* file.c (sys_fail2): raise error for two operand system calls
-	  such as rename, link, symlink.  (ruby-bugs PR#1047)
-
-Sun Jul 20 11:03:25 2003  UENO Katsuhiro  <katsu@blue.sky.or.jp>
-
-	* ext/zlib/zlib.c (gzfile_read_header): gz->z.input may be nil after
-	  finishing reading a gzip header.
-
-Sat Jul 19 22:25:47 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_match2): add warning to "~string".
-	  [ruby-list:37751]
-
-	* lib/net/ftp.rb (Net::FTP::open): takes block.  suggested by Gavin
-	  Sinclair in [ruby-core:01237].
-
-Sat Jul 19 19:03:24 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/stdlib.c: add bsearch().
-
-Sat Jul 19 12:34:45 2003  David Black  <dblack@superlink.net>
-
-	* lib/scanf.rb: import.
-
-Sat Jul 19 11:27:25 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/xmlrpc: import.
-
-	* eval.c (thgroup_add): should return group for terminated thread
-	  case.
-
-	* eval.c (thgroup_add): do not raise ThreadError on terminated
-	  thread addition for compatibility.  just warning.
-
-Sat Jul 19 04:50:56 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/iconv/charset_alias.rb, ext/iconv/extconf.rb: make wrapper
-	  script which maps charset names.  [ruby-dev:20625]
-
-	* ext/iconv/iconv.c (charset_map): charset name map.
-
-	* ext/iconv/iconv.c (iconv_dfree): no exception while
-	  finalization.
-
-	* ext/iconv/iconv.c (iconv_s_conv): new method Iconv.conv.
-	  [ruby-dev:20588]
-
-Sat Jul 19 03:09:18 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/Win32API/lib/win32/registry.rb (Win32::Registry::Error):
-	  inherit StandardError instead of SystemCallError.
-
-Sat Jul 19 02:00:39 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_attr): extra calls of method_added.  [ruby-talk:76361]
-
-Fri Jul 18 18:44:22 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (init_mkmf): clear $INSTALLFILES.  [ruby-dev:20727]
-
-Fri Jul 18 17:34:39 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (rm_f): use FileUtils.
-
-	* lib/mkmf.rb (modified?): return mtime of the target if
-	  it exists and newer than times.
-
-	* lib/mkmf.rb (install_files): add a current directory
-	  file even if it does not exist yet.
-
-	* lib/mkmf.rb (configuration): do not add $LDFLAGS to
-	  DLDFLAGS.
-
-	* ext/extmk.rb (extmake): check whether Makefile is newer
-	  than depend and MANIFEST.
-
-Fri Jul 18 14:57:19 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (make_cmdvector): recognize quote within string.
-	  based on Nobu's patch ([ruby-win32:450]). [ruby-talk:75853]
-
-Fri Jul 18 13:04:36 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_missing): VCALL is called only for LOCAL_ID.  no
-	  check required.
-
-	* parse.y (primary): primary:tFID generates NODE_FCALL.
-	  [ruby-dev:20641]
-
-Thu Jul 17 18:50:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (match_captures): rename from "groups".
-
-Thu Jul 17 17:57:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_clear_cache_by_class): check both klass and origin.
-
-Thu Jul 17 13:46:25 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_init): set ruby_running to true after
-	  initialization.
-
-Thu Jul 17 13:42:53 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/ftools.rb (File::makedirs): do not handle "//" as a directory.
-
-Thu Jul 17 06:40:28 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: recover and fix typo : Tk.chooseDirectory
-	  (Tk8.4 feature)
-
-Wed Jul 16 16:23:58 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_proc_new): call svalue_to_avalue for yield argument.
-
-Wed Jul 16 00:31:00 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_disable_super, rb_enable_super): deprecate.
-
-	* eval.c (thgroup_s_alloc): re-implement group struct.
-
-	* eval.c (thgroup_add): add check for enclose and frozen status.
-
-Tue Jul 15 19:50:49 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_add_method, rb_alias): need to clear cache by
-	  ID when method defined in parent class is cached for
-	  grand child classes.  [ruby-dev:20672]
-
-Tue Jul 15 14:38:21 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/matrix.rb: remove elements conversion to_f, to_i, to_r.
-
-	* lib/cgi/session/pstore.rb: add new file.
-
-Tue Jul 15 03:30:41 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c (syck_mark_emitter): forgot to rb_gc_mark the
-	  outgoing IO object.
-
-Sun Jul 13 14:55:36 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* process.c (proc_getgroups, proc_setmaxgroups): fix typo.
-
-Sat Jul 12 17:01:28 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* struct.c (struct_entry): add prototype to avoid VC++ warnings.
-
-Sat Jul 12 04:43:57 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/emitter.c: new emitter code.
-
-	* ext/syck/rubyext.c: Emitter class.
-
-	* lib/yaml.rb: Load Syck emitter, if available.
-
-	* lib/yaml/stream.rb: ditto.
-
-	* lib/yaml/baseemitter.rb: underlying class for all emitters.
-
-	* lib/yaml/rubytypes.rb: use BaseEmitter abstraction.
-
-	* lib/yaml/emitter.rb: ditto.
-
-Sat Jul 12 04:23:13 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_undef): need to clear cache for inherited class.
-	  (rubicon/builtin/TestModulePrivate.rb:test_undef_method)
-
-Sat Jul 12 01:21:54 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (avalue_to_svalue): typo.
-
-	* eval.c (rb_load): rb_prohibit_interrupt must not underflow.
-
-	* parse.y (NODE_STRTERM, tokadd_string, parse_string): moved
-	  string nest level from a static variable to NODE_STRTERM, to
-	  preserve it from word to word in %W/%w.
-
-Fri Jul 11 22:37:18 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (aix): needs ruby.imp even with gcc.
-	  (ruby-bugs:PR#1007)
-
-Fri Jul 11 18:37:37 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* instruby.rb: do not handle directories. [ruby-dev:20613]
-
-Fri Jul 11 16:09:09 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): exp should be less than MDMAXEXPT.
-
-Fri Jul 11 07:17:47 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: not create a Tcl/Tk interpreter if already
-	  defined TkCore::INTERP
-
-	* ext/tk/lib/tk.rb: bugfix on TkWindow#configure
-
-Thu Jul 10 14:42:02 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* math.c (math_log): nan takes a dummy argument on Cygwin 1.5.0.
-
-Wed Jul  9 23:50:46 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* regex.c (mbctab_sjis): 0x80 is not shift jis first byte.
-	  [ruby-dev:20516]
-
-Wed Jul  9 15:38:28 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* instruby.rb: do not install shared libraries as man pages.
-
-	* mkconfig.rb: support text-mount on Cygwin.
-
-Wed Jul  9 11:09:57 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* re.c (match_entry): add prototype to avoid VC++ warnings.
-
-Wed Jul  9 03:48:27 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_load): put rb_load_file() in a thread critical
-	  section. [ruby-dev:20490]
-
-	* eval.c (compile): put rb_compile_string() in a thread critical
-	  section.
-
-Tue Jul  8 02:35:41 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_get_0): should not warn if constant is not
-	  defined. (ruby-bugs-ja PR#509)
-
-	* bignum.c (rb_big2dbl): give a warning on overflow.
-	  (ruby-bugs-ja PR#510)
-
-	* util.c (ruby_strtod): change MDMAXEXPT from 511 to 308.
-
-	* pack.c (utf8_to_uv): long is sufficient.  LONG_LONG is not
-	  required.
-
-Tue Jul  8 01:43:16 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* bignum.c (rb_big2str): support 32 bit (without `long long' type)
-	  machines. (ruby-bugs-ja PR#512)
-
-Mon Jul  7 10:22:46 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/dbm/extconf.rb (gdbm_compat, qdbm): add check for gdbm_compat
-	  and qdbm.
-
-Mon Jul  7 01:34:49 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call_super): k->super maybe NULL if klass is Kernel.
-	   [ruby-dev:20519]
-
-	* gc.c (obj_free): clear method cache when freeing class/module.
-
-Sat Jul  5  23:32:06 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_remove_method): allow "remove_method" to accept
-	  multiple arguments.
-
-Sat Jul  5 00:22:59 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* node.h (NEW_NODE): cast arguments to rb_node_newnode().
-
-Fri Jul  4 21:48:44 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/syck/rubyext.c, ext/syck/syck.c, ext/syck/syck.h,
-	  ext/syck/token.c: C++ style comments are not allowed.
-	  (ruby-bugs:PR#1008)
-
-Thu Jul  3 23:41:30 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/timeout.rb: add optional exception argument for compatibility
-	  function.
-
-Thu Jul  3 14:22:46 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_values_at): extract common procedure from
-	  rb_ary_values_at.  follow DRY principle.
-
-	* re.c (match_values_at): values_at should understand ranges.
-
-	* struct.c (rb_struct_values_at): ditto.
-
-	* struct.c (inspect_struct): inspect format changed; add "struct "
-	  at the top.
-
-	* sprintf.c (rb_f_sprintf): "%p" specifier for inspect output.
-	  (RCR#69)
-
-	* eval.c (rb_mod_undef_method): allow "undef_method" to accept
-	  multiple arguments. (RCR#146)
-
-	* lib/timeout.rb: put timeout in Timeout module. (RCR#121)
-	  [ruby-talk:61028]
-
-	* re.c (match_groups): new method added. (RCR#139)
-
-	* variable.c (rb_mod_const_of): should exclude constant defined
-	  in Object, unless retrieving constants of Object.
-
-Thu Jul  3 12:13:05 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (VPATH): convert from Windows form to Unix form on
-	  MinGW.  This fixes the build with GNU make 3.80-1 for Cygwin.
-
-Wed Jul  2 23:27:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_new4): do not allocate new string if original
-	  is frozen or already have copy-on-write entry. [ruby-talk:74940]
-
-Wed Jul  2 13:22:39 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_shared_replace): clear flags before copy.
-
-	* string.c (rb_str_replace): ditto.
-
-	* eval.c (rb_yield_0): override visibility mode for module_eval
-	  etc. (ruby-bugs-ja PR#505)
-
-Wed Jul  2 11:45:34 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: synchronize document with source code.
-
-	* lib/net/pop.rb: ditto.
-
-Wed Jul  2 11:39:50 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: unify SMTP and SMTPCommand.
-
-	* lib/net/smtp.rb: new exception class SMTPError.
-
-	* lib/net/smtp.rb: new exception class SMTPAuthenticationError.
-
-	* lib/net/smtp.rb: new exception class SMTPServerBusy.
-
-	* lib/net/smtp.rb: new exception class SMTPSyntaxError.
-
-	* lib/net/smtp.rb: new exception class SMTPFatalError.
-
-	* lib/net/smtp.rb: new exception class SMTPUnknownError.
-
-	* lib/net/smtp.rb: change critical section protect algorithm.
-
-	* lib/net/smtp.rb (SMTP#do_start): check authentication args
-	  before all.
-
-	* lib/net/smtp.rb: new method send_message (alias send_mail).
-
-	* lib/net/smtp.rb: new method open_message_stream (alias ready).
-
-	* lib/net/pop.rb: POPBadResponse is a POPError.
-
-	* lib/net/pop.rb (POPMail#pop): ban ReadAdapter.
-
-	* lib/net/pop.rb (POPMail#top): ditto.
-
-	* lib/net/pop.rb (POP3Command): change critical section protect
-	  algorithm.
-
-	* lib/net/pop.rb (POP3Command#auth): USER and PASS should be one
-	  critical block.
-
-	* lib/net/pop.rb (POP3Command#retr): ban `dest' argument using
-	  iterator.
-
-	* lib/net/pop.rb (POP3Command#top): ditto.
-
-	* lib/net/protocol.rb: #read_message_to -> #each_message_chunk
-
-	* lib/net/protocol.rb: #D -> #LOG
-
-	* lib/net/protocol.rb: #D_off -> #LOG_off
-
-	* lib/net/protocol.rb: #D_on -> #LOG_on
-
-Wed Jul  2 11:10:47 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: set old class aliases for backward
-	  compatibility. [ruby-talk:74863]
-
-	* lib/net/protocol.rb: ditto.
-
-Wed Jul  2 01:32:40 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/net/pop.rb (Net::POP3#start): typofix.
-
-Tue Jul  1 22:08:19 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: TkWindow include TkWinfo
-
-	* ext/tk/lib/tk.rb: treat unknown widget classes as subclasses
-	  of TkWindow
-
-Tue Jul  1 19:02:12 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* parse.y (rb_intern): should use mbclen instead of mblen.
-
-Tue Jul  1 10:36:19 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* class.c (rb_define_class, rb_define_module): also set constant under
-	  Object.  [ruby-dev:20445]
-
-	* object.c (boot_defclass): ditto.
-
-	* variable.c (rb_const_get_at, rb_const_get_0, rb_mod_const_at,
-	  rb_const_defined, mod_av_set, rb_const_assign): toplevel constants
-	  are now under Object, rb_class_tbl remains for GC.
-
-Mon Jun 30 17:53:06 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (mnew): ignore metaclasses have no influence, for rklass.
-	  [ruby-talk:74706]
-
-Sun Jun 29 06:59:07 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb, lib/drb/invokemethod.rb: import drb-2.0.4
-	  (use LocalJumpError#reason)
-
-Sat Jun 28 12:28:54 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (rb_cv_stack_grow_dir): check stack growing direction.
-
-	* eval.c (rb_thread_restore_context): prior configuration macro.
-
-	* gc.c (ruby_stack_length): always return the address of lower edge.
-
-	* gc.c (rb_gc_mark_locations): remove margin.  [ruby-dev:20462]
-
-	* gc.c (rb_gc, Init_stack): prior configuration macro.
-
-	* gc.c (Init_stack): add safety margin.
-
-Fri Jun 27 14:41:22 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* string.c (rb_str_split_m): remove white spaces on the head of
-	  the last element, when limit is specified.  [ruby-talk:74506]
-
-Fri Jun 27 03:24:54 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (io_fflush): need to check if closed after thread switch.
-	  [ruby-dev:20351]
-
-	* io.c (fptr_finalize): ditto.
-
-	* string.c (rb_str_rindex_m): fixed wrong fix.  should move backward
-	  first only when matching from the end.
-
-Thu Jun 26 21:34:49 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* class.c (class_instance_method_list): get rid of warning about
-	  argument type mismatch, and inline method_list().
-	  [ruby-core:01198]
-
-Wed Jun 25 14:40:33 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add and modify methods ---
-	  TkWidget.database_class, TkWidget.database_classname,
-          TkWidget#database_class, TkWidget#database_classname
-
-	* ext/tk/lib/tk.rb: instances of a subclass of TkToplevel or
-	  TkFrame are created with ":class=>subclass" option as default.
-
-	* ext/tk/sample/tkoptdb.rb: add a new part
-
-Wed Jun 25 12:52:58 2003  Matthew Dempsky  <jivera@flame.org>
-
-	* class.c (rb_generic_class_instance_methods): merge argument
-	  check (and warning) into one function; following DRY principle.
-	  [ruby-core:01193]
-
-Wed Jun 25 05:49:10 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: add widget destroy hook binding to TkBindTag::ALL
-
-	* ext/tk/lib/tkcanvas.rb: Although requiring manual control of GC,
-	  memory eating problem of TkCanvas Items is fixed.
-
-	* ext/tk/lib/tktext.rb: add some methods and bug fix
-
-Wed Jun 25 00:14:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (autoload_delete): should delete Qundef from iv_tbl.
-	  (ruby-bugs-ja PR#504)
-
-Tue Jun 24 16:46:07 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix on TkToplevel, TkFrame,
-	  TkPanedwindow, TkOptionDB
-
-	* ext/tk/lib/tk.rb: TkOptionDB --- make it more secure to use procs
-	  defined on resourceDB
-
-	* ext/tk/sample/tkoptdb.rb, resource.ja, resource.en:
-	  sample script how to use TkOptionDB.
-
-Tue Jun 24 14:22:41 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* lib/yaml/types.rb: replaced Kernel::Hash reference with Object::Hash
-	  from [ruby-talk:74270]
-
-Tue Jun 24 17:59:30 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_yield_0): show yielded block position not only yielding
-	  point.  [ruby-dev:20441]
-
-Tue Jun 24 16:47:07 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTPHeader#proxy_basic_auth): missing `@'.
-	  Thanks Douglas Koszerek. (ruby-bugs:PR975)
-
-Tue Jun 24 14:31:17 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* config.guess: have wrongly returned "alphaev56-unknown-linux-"
-	  on Linux/Alpha. [ruby-dev:20434]
-
-Tue Jun 24 04:54:46 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* configure.in: always add -mieee for gcc/alpha. [ruby-dev:20429]
-
-Tue Jun 24 02:40:09 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* array.c (rb_ary_unshift_m): need to check number of arguments.
-	  [ruby-talk:74189]
-
-Mon Jun 23 23:59:56 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* io.c (io_close): missing prototype. [ruby-dev:20422]
-
-	* ext/socket/socket.c (bsock_do_not_rev_lookup_set): ditto.
-
-	* ext/win32ole/win32ole.c (foletype_guid, foletype_progid): ditto.
-
-	* error.c (syserr_initialize): length argument of sprintf() is an
-	  int.
-
-Mon Jun 23 23:28:14 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* MANIFEST: add wince files.
-
-	* ext/tk/MANIFEST: add sample/tkmenubutton.rb.
-
-Mon Jun 23 17:40:58 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* dir.c (find_dirsep): get rid of warnings.
-
-	* eval.c (error_print): temporary value might be disposed by GC.
-
-	* hash.c (env_has_value, env_index): should not increment NULL.
-
-	* io.c (io_read, rb_io_sysread): not read when length is 0.
-
-	* io.c (rb_io_reopen): ensure initialized IO.
-
-	* io.c (rb_io_init_copy): sychronize file pointer.
-
-	* io.c (rb_io_s_pipe): make exception proof.
-
-	* string.c (rb_str_rindex_m): Fixnum 0 matched end of string.
-
-Mon Jun 23 16:18:12 2003  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (rb_open_file): initialize flags.
-
-	* time.c (time_arg): initialize v[6] even when argc is 10 to
-	  avoid valgrind error.
-
-Mon Jun 23 14:22:44 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix on TkRoot and TkToplevel
-
-Mon Jun 23 08:24:01 2003  Florian Frank  <flori@nixe.ping.de>
-
-	* string.c (rb_str_upto): generate sequence according to "succ"
-	  order.  formerly check was done by dictionary order.
-	  [ruby-talk:74138]
-
-Mon Jun 23 00:27:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_string_value): fill constant empty string along
-	  with setting ELTS_SHARED if str->ptr is NULL. [ruby-core:01179]
-
-	* string.c (rb_string_value_ptr): ditto.
-
-	* string.c (rb_check_string_type): ditto.
-
-Sun Jun 22 23:42:20 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* string.c (str_gsub): move END(0) check before mbclen2().
-
-	* string.c (scan_once): reduce END(0) check.
-
-	* io.c (rb_io_initialize): accept fixnum mode.
-
-	* eval.c (error_print): replace strchr() by memchr(), einfo may
-	  contain "\0".
-
-	* pack.c (pack_unpack): range check for "@" move; initialize check
-	  for "m".
-
-	* error.c (syserr_initialize): avoid buffer overflow.
-
-	* file.c (rb_file_s_readlink): expand buffer until readlink
-	  succeed.
-
-Sun Jun 22 16:17:02 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: TkRoot.new and TkToplevel.new accept Wm
-	  commands as elements
-
-	* ext/tk/lib/tk.rb: TkMenu --- add some methods
-
-	* ext/tk/lib/tk.rb: TkOptionMenubutton --- bug fix
-
-	* ext/tk/sample/tkmenubutton.rb: sample of TkMenubutton and
-	  TkOptionMenubutton
-
-Sat Jun 21 23:15:08 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): should not propagate distination tag if
-	  tag is already handled in this level. (ruby-bugs-ja PR#501)
-
-	* object.c (str_to_id): check for empty string before intern.
-	  [ruby-talk:74006]
-
-Sat Jun 21 13:56:09 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/Makefile.sub: undefine HAVE__SETJMP.
-
-	* wince/resource.rb: include winver.h in wince3.0.
-
-Sat Jun 21 12:55:17 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: TkRoot.new and TkToplevel.new accept Wm commands
-	  as elements of a hash argument.
-
-	* ext/tk/sample/tktimer2.rb: add comments about the usage of a
-	  TkTimer object.
-
-Sat Jun 21 08:47:22 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk*.rb: remove direct-accesses to TkComm::INTERP and
-	  TkComm::INITIALIZE_TARGETS
-
-	* ext/tk/lib/tk*.rb: use TkINTERP_SETUP_SCRIPTS constant for setting
-	  up the interpreter
-
-	* ext/tcltklib/tcltklib.c: support to create a safe interpreter
-	  with safe-Tk
-
-Fri Jun 20 23:28:27 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): should not propagate TAG_BREAK and
-	  TAG_RETURN from orphan Proc object. [ruby-core:01148]
-
-Fri Jun 20 15:04:28 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* defines.h (PATH_ENV): name of PATH environment. [new].
-
-	* defines.h (ENV_IGNORECASE): define for case insensitive platforms
-	  to access environment variables.
-
-	* dln.c (dln_find_exe): use PATH_ENV instead of "PATH".
-
-	* hash.c (env_delete, rb_f_getenv, env_fetch, rb_env_path_tainted,
-	  env_aset): ditto.
-
-	* ruby.c (proc_options): ditto.
-
-Fri Jun 20 14:52:46 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: Tk interpreter returns TAINTED strings.
-
-Fri Jun 20 03:09:21 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (new_yield): distinguish "yield 1,2" and "yield [1,2]".
-	  [ruby-dev:20360]
-
-	* eval.c (rb_eval): support new_yield() change.
-
-	* variable.c (rb_const_get_0): warn for Foo::BAR when BAR is a
-	  toplevel constant (i.e. a constant defined under Object).
-	  [ruby-list:36935]
-
-	* parse.y (no_blockarg): separate no block argument check and
-	  ret_args argument processing.
-
-Fri Jun 20 00:45:19 2003  NAKAMURA, Hiroshi <nahi@ruby-lang.org>
-
-	* lib/csv.rb: import csv module.
-
-Thu Jun 19 22:51:41 2003  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb.rb, lib/drb/drb.rb, lib/drb/eq.rb,
-	  lib/drb/extserv.rb, lib/drb/extservm.rb, lib/drb/gw.rb,
-	  lib/drb/invokemethod.rb, lib/drb/observer.rb,
-	  lib/drb/timeridconv.rb, lib/drb/unix.rb: import drb-2.0.4b3
-
-Thu Jun 19 16:14:43 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (lib_do_one_event): change default
-	  value of the argument
-
-	* ext/tcltklib/tcltklib.c (lib_do_one_event): returns true/false
-
-	* ext/tcltklib/tcltklib.c: add TclTkLib::EventFlag::NONE ( == 0 )
-
-	* ext/tcltklib/tcltklib.c: add set_no_event_wait() and
-	  get_no_event_wait()
-
-	* ext/tcltklib/MANUAL.euc: modify
-
-	* ext/tcltklib/README.euc: ditto
-
-	* ext/tk/lib/tk.rb: change default value of TkCore.do_one_event
-	  argument
-
-	* ext/tk/lib/tk.rb: add TkCore.set_no_event_wait(wait) and
-	  TkCore.get_no_event_wait
-
-	* ext/tk/lib/tk.rb: add Tk.exit ( == destroy root widget )
-
-	* ext/tk/lib/tkafter.rb: rename TkAfter => TkTimer (TkAfter is
-	  an alias name)
-
-	* ext/tk/lib/tkafter.rb: set_callback returns self
-
-	* ext/tk/lib/tkafter.rb: continue() raises an exception, if already
-	  running or no procedure.
-
-	* ext/tk/lib/tkafter.rb: skip() raises an exception, if not running.
-
-	* ext/tk/sample/tktimer2.rb: new sample for TkTimer class.
-
-Thu Jun 19 16:13:54 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* rubytest.rb: add library path to include standard libraries.
-
-Thu Jun 19 13:13:10 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* hash.c (env_delete, rb_f_getenv, env_fetch): case insensitive to
-	  access environment variables on DOSISH platforms.
-
-Thu Jun 19 00:51:47 2003  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
-
-	* range.c (rb_range_beg_len): out_of_range check after adjusting
-	  end point. [ruby-dev:20370]
-
-Wed Jun 18 23:59:11 2003  Guy Decoux  <ts@moulon.inra.fr>
-
-	* parse.y (call_args): the first argument to arg_cancat() should
-	  be NODE_LIST. [ruby-core:01151]
-
-Wed Jun 18 23:41:27 2003  Marc Cartright  <marc@isri.unlv.edu>
-
-	* ext/zlib/zlib.c (zstream_run): In a particular situation,
-	  deflate/inflate will return Z_BUF_ERROR, even though another call
-	  is required by the zlib library.
-
-Wed Jun 18 19:46:21 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix
-
-	* ext/tk/lib/tk.rb: rename 'no_create' option to 'without_creating'
-
-	* ext/tk/lib/tk.rb: add TkWindow#pack_in, TkWindow#grid_in,
-	  TkWindow#place_in
-
-	* ext/tk/lib/tk.rb: add TkWindow#bind_class and TkWindow#database_class
-
-	* ext/tk/lib/tk.rb: add TkBindTag.new_by_name and TkDatabaseClass
-	  for binding to database class
-
-	* ext/tk/lib/tk.rb: check varname whether already exsist or not.
-	  (TkVarAccess.new)
-
-	* ext/tk/lib/tk.rb: TkTextWin#bbox returns an array of four numbers
-
-	* ext/tk/lib/tk.rb: autoload TkDialog2, TkWarning2
-
-	* ext/tk/lib/tk.rb: scan event callback arguments and convert
-	  to proper type
-
-	* ext/tk/lib/tk.rb: TkBindTag.new accepts a block
-
-	* ext/tk/lib/tk.rb: If given taglist, TkWindow#bindtags(taglist)
-	  returns taglist
-
-	* ext/tk/lib/tk.rb: add TkWindow#bindtags=(taglist)
-
-	* ext/tk/lib/tk.rb: Tk.focue and Tk.focus_lastfor return nil
-	  if there is no target widget.
-
-	* ext/tk/lib/tk.rb: Tk::Wm.client returns the argument string
-	  when setting name
-
-	* ext/tk/lib/tk.rb: TkGrid.columnconfiginfo and rowconfiginfo
-	  given a slot return a number.
-
-	* ext/tk/lib/tk.rb: TkWindow.grid_columnconfiginfo and
-	  grid_rowconfiginfo --- ditto
-
-	* ext/tk/lib/tk.rb: rename and define alias :: TkOption ==> TkOptionDB
-
-	* ext/tk/lib/tk.rb: define alias :: TkTimer ==> TkAfter
-
-	* ext/tk/lib/tk.rb: some instance methods change from public to private
-
-	* ext/tk/lib/tk.rb: some TkComm methods change to module functions
-
-	* ext/tk/lib/tk.rb: add support for -displayof option to some
-	  TkWinfo methods
-
-	* ext/tk/lib/tk.rb: bind, bind_append and bind_remove ---
-	  returns the target of event-binding
-
-	* ext/tk/lib/tk.rb: add Tk8.4 features
-
-	* ext/tk/lib/tk.rb: add TkPaneWindow
-
-	* ext/tk/lib/tkdialog.rb: bug fix
-
-	* ext/tk/lib/tkdialog.rb: some methods return self
-
-	* ext/tk/lib/tkdialog.rb: add TkTextMark#+(mod) and TkTextMark#-(mod)
-
-	* ext/tk/lib/tkdialog.rb: add some methods
-
-	* ext/tk/lib/tkcanvas.rb: bug fix and some methods return self
-
-	* ext/tk/lib/tkentry.rb: some methods return self
-
-	* ext/tk/lib/tkentry.rb: TkEntry#bbox returns an array of four numbers
-
-	* ext/tk/lib/tkentry.rb: scan validatecommand arguments and
-	  convert to proper type
-
-	* ext/tk/lib/tkbgerror.rb: support to define a error handler by user
-
-	* ext/tcltklib/tcltklib.c: [ruby-talk:60759]
-
-Wed Jun 18 13:50:06 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should dispatch based on ID type.
-
-Wed Jun 18 12:53:42 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* eval.c (rb_yield_0): should restore scope_vmode during yield.
-	  [ruby-dev:20361]
-
-Wed Jun 18 01:13:36 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c (rb_syck_load_handler): merge key implemented.
-
-	* ext/syck/rubyext.c (transfer_find_i): removed use of String#=~ in favor
-	    of Regexp#match.
-
-	* lib/yaml.rb: YAML::try_implicit returns.
-
-	* lib/yaml/rubytypes.rb: Regexps added for type matching.
-
-	* lib/yaml/emitter.rb: fix String + nil error.
-
-Tue Jun 17 17:01:08 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/gram.c: added grammar for certain empty sequence entries.
-
-	* ext/syck/handler.c, ext/syck/syck.c, ext/syck/syck.h: track bad anchors.
-
-	* ext/syck/token.c: added pause token, tag possible circular references.
-
-	* lib/yaml/rubytypes.rb: parsing YMD time as Date instance.
-
-	* ext/syck/rubyext.c: ditto. DomainType, PrivateType, BadAlias classes.
-
-Tue Jun 17 21:28:27 2003  Ariff Abdullah <skywizard@time.net.my>
-
-	* win32/win32.c (rb_w32_opendir): need to set errno. [ruby-talk:73761]
-
-Mon Jun 16 19:01:25 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c: remove rb_cBlock.
-
-Mon Jun 16 18:06:33 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* numeric.c (rb_fix2uint): renamed from rb_fix2int on IA64.
-
-Mon Jun 16 17:02:57 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (proc_invoke): format the message for localjump_error().
-
-Mon Jun 16 16:23:56 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/dl/dl.c (rb_dl_callback): use rb_block_proc() instead of
-	  rb_block_new().
-
-	* ext/win32ole/win32ole.c (ev_on_event): ditto.
-
-Mon Jun 16 16:06:47 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_alloc): re-unification of Block and Proc.  Block
-	  class is no longer available.
-
-Mon Jun 16 14:43:14 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* bcc32/Makefile.sub: undefine HAVE_GETGROUPS.
-
-Sat Jun 14 16:58:41 2003  Guy Decoux  <ts@moulon.inra.fr>
-
-	* regex.c (calculate_must_string): should handle option_set
-	  properly. [ruby-talk:73481]
-
-	* regex.c (re_compile_fastmap): a bug in flag manipulation.
-	  [ruby-talk:73549]
-
-Sat Jun 14 17:59:59 2003  Guy Decoux  <ts@moulon.inra.fr>
-
-	* eval.c (method_arity): should handle NODE_BMETHOD and
-	  NODE_DMETHOD. [ruby-core:01138]
-
-Fri Jun 13 09:24:39 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (storebinary): seek correctly. Thanks, William Webber.
-
-	* lib/net/ftp.rb (putbinaryfile): rescue FTPPermError.
-
-Thu Jun 12 22:13:13 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb : add 'no_create' option to widget
-	  initialize method.
-
-	* ext/tk/MANIFEST : forgot to commit when added tkmacpkg.rb
-	  and tkwinpkg.rb
-
-	* ext/tk/lib/README : ditto.
-
-Thu Jun 12 21:14:11 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb : widget configure returns self (for method
-	  call chain)
-
-	* ext/tk/lib/tkmacpkg.rb : Mac resource (not new but not
-	  included until now)
-
-	* ext/tk/lib/tkwinpkg.rb : Win DDE and registry (not new but not
-	  included until now)
-
-Tue Jun 10 14:26:30 2003  why the lucky stiff  <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/token.c: preserve newlines prepended to a block.
-
-	* ext/syck/implicit.c (syck_match_implicit): added !merge and !default.
-
-	* lib/yaml/constants.rb: remove '\z' escape.
-
-	* lib/yaml/emitter.rb: ensure reset of @seq_map shortcut flag.
-
-	* lib/yaml/encoding.rb: remove Unicode translation methods.
-
-	* lib/yaml/rubytypes.rb: improved round-tripping of Strings.
-	  [ruby-core:1134]
-
-Tue Jun 10 01:07:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb::eval_input): warn and exit if $SAFE >=3
-	  after input evaluation.
-
-	* lib/irb.rb (IRB::Irb::eval_input): untaint input string.  now
-	  irb works for levels 1 and 2.
-
-Mon Jun  9 19:02:33 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in: checks presence of grp.h and setgroups().
-
-	* process.c (proc_getgroups, proc_setgroups): raise
-	  NotImplementedError unless available.  [ruby-talk:73014]
-
-Mon Jun  9 18:09:11 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: fixed 100% CPU problem of Tk.mainloop
-
-Mon Jun  9 15:50:24 2003  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: renewal Tk.mainloop
-
-Sun Jun  8 13:37:21 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/setup.mak: set SUBSYSTEM in each platform.
-
-	* wince/stdlib.c: fix mblen() bug.
-
-Sat Jun  7 22:22:03 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_loader_transfer): should not use
-	  rb_cProc directly, since type_proc may be Proc, Block, or
-	  Method.
-
-	* parse.y (value_expr0): class and module statements should not be
-	  warned for "void value expression". [ruby-talk:72989]
-
-Sat Jun  7 01:46:41 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (add_final): should determine type by respond_to?
-
-	* gc.c (define_final): ditto.
-
-	* io.c (rb_io_ctl): should not depend on respond_to?
-
-	* range.c (range_step): rb_check_string_type().
-
-Fri Jun  6 20:29:14 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (error_print): needs to be exception proof.
-
-	* eval.c (error_handle, rb_longjmp): bails out when exception
-	  reentered.  (ruby-bugs-ja:PR#487), [ruby-core:01119],
-	  [ruby-core:01122]
-
-	* eval.c (Init_Proc): pre-allocates critical error objects.
-
-Fri Jun  6 20:29:14 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (cmd_brace_block, do_block, brace_block): initialize block
-	  variables at the beginning of the block.  [ruby-talk:72521]
-
-Fri Jun  6 18:49:11 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_setgroups): new functions.
-
-Fri Jun  6 18:33:27 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (define_final): eliminate rb_f_lambda() call.
-
-	* class.c (rb_scan_args): ditto.
-
-	* signal.c (sig_trap): ditto.
-
-	* hash.c (rb_hash_initialize): ditto.
-
-	* variable.c (rb_f_trace_var): ditto.
-
-	* ext/dl/dl.c (rb_dl_callback): ditto.
-
-	* ext/win32ole/win32ole.c (ev_on_event): ditto.
-
-Fri Jun  6 16:10:01 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: define Net::HTTPResponse#to_ary for backward
-	  compatibility.  [ruby-talk:72927]
-
-	* lib/net/protocol.rb: add warning.
-
-Fri Jun  6 13:30:57 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): $SAFE is turned off in the finalization.
-	  Each END proc should preserve its own $SAFE level. [ruby-core:01119]
-
-	* marshal.c (marshal_load): remove unused variable "hash".
-	  [ruby-core:01120]
-
-	* hash.c (env_str_new): freeze strings from ENV. [ruby-talk:72860]
-
-	* array.c (rb_ary_first): optional argument to retrieve first n
-	  elements.
-
-	* array.c (rb_ary_last): optional argument to retrieve last n
-	  elements.
-
-Thu Jun  5 21:31:55 2003  Takaaki Uematsu <uema2x@jcom.home.ne.jp>
-
-	* wince/stdlib.c: add mblen().
-
-Thu Jun  5 18:33:46 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/curses/curses.c (window_s_allocate,curses_finalize):
-	  avoid VC++ warnings.
-
-Thu Jun  5 17:44:11 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c (syck_parser_mark): was a bit heavy on the GC.
-
-	* lib/yaml.rb (YAML::transfer): added.
-
-Thu Jun  5 16:11:50 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub, wince/Makefile.sub
-	  (MISSING): link with missing/erf.c.
-
-	* missing.h (erf, erfc): fix prototype.
-
-	* missing/erf.c: new. [ruby-list:37753]
-
-Thu Jun  5 15:09:06 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (math_erf,math_erfc): new function. [ruby-list:37753]
-
-Thu Jun  5 14:49:43 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c: using GC nodes caused segfault. [ruby-core:1071]
-
-Thu Jun  5 13:48:57 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/token.c: directives choked on a period.
-
-	* ext/syck/gram.y: anchors work above a collection. [ruby-core:1071]
-
-	* ext/syck/handler.c, ext/syck/syck.c: ensure a fresh strtable between
-	  parser iterations.
-
-Wed Jun  4 12:06:59 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_finalize): no longer need to turn off $DEBUG in the
-	  finalizer. (ruby-bugs-ja PR#473)
-
-Tue Jun  3 22:20:49 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call_super): should search superclass method based on
-	  orig_func, not last_func.
-
-Tue Jun  3 09:59:27 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call_super): inheritance line adjustment moved from
-	  rb_call(). [ruby-core:01113]
-
-	* eval.c (rb_eval): use rb_call_super() to follow DRY principle.
-
-Mon Jun  2 02:20:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (push_values_at): Array#values_at should work with
-	  ranges too.
-
-	* range.c (rb_range_beg_len): length calculation was wrong.
-
-	* eval.c (rb_call): should set T_ICLASS in the frame->last_class.
-	  [ruby-core:01110]
-
-Sun Jun  1 21:50:01 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: should not use def file, use ld with
-	  --export-all-symbols option on Cygwin/MinGW.
-
-	* defines.h: ditto.
-
-	* cygwin/GNUmakefile.in: ditto.
-
-	* ext/digest/defs.h: avoid warnings on Cygwin.
-
-Sun Jun 01 13:33:49 2003 Takaaki Uematsu <uema2x@jcom.home.ne.jp>
-
-	* wince/string_wce.c: add strpbrk() for hpcpro support.
-
-	* wince/setup.mak: add hpcpro(CE2.11) & armv4t(CE.NET) support.
-
-	* wince/resource.rb: ditto.
-
-	* wince/Makefile.sub: ditto.
-
-Sun Jun  1 10:38:28 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* variable.c (rb_autoload_load): autoloaded constants under a module
-	  belong to the module.  [ruby-core:01094], [ruby-dev:20309]
-
-Sat May 31 04:36:54 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (rb_intern): should handle multibyte name.
-
-Fri May 30 23:18:01 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c (rb_syck_mktime): seconds calculated wrong.
-
-	* ext/syck/gram.c: flexibility to anchors and transfer methods on
-	  collections.
-
-	* ext/syck/token.c: hex escapes.
-
-	* lib/yaml/basenode.rb: YamlNode references changed to YAML::BaseNode.
-
-Fri May 30 22:28:04 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* numeric.c (rb_num2uint, rb_fix2int): new function to convert
-	  values over INT_MAX.  [ruby-core:01099]
-
-	* ruby.h (NUM2UINT, FIX2INT): ditto.
-
-Fri May 30 15:01:05 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/token.c: preserve any indentation past an explicit
-	  indentation.
-
-Fri May 30 14:55:44 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_Array): exclude Kernel#to_a instead of Object#to_a.
-	 (ruby-bugs-ja:PR#483)
-
-	* lib/optparse.rb (OptionParser::Switch#parse_arg): not splat.
-
-	* lib/optparse.rb (OptionParser::Switch#conv_arg): splat if no
-	  conversion supplied.
-
-	* lib/optparse.rb (OptionParser::Switch::PlacedArgument#parse):
-	  override next switch after argument conversion.
-
-Fri May 30 14:41:34 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/handler.c, ext/syck/syck.h: removed syck_fold_format().
-
-	* ext/syck/gram.c: flexibility for aliases and anchors.
-
-	* ext/syck/token.c: folding now handled in the tokenizer.
-
-Fri May 30 06:21:18 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* variable.c (rb_autoload_load): should delete autoloaded
-	  symbol itself before load.  [ruby-core:01097]
-
-	* variable.c (rb_mod_remove_const): must not return Qundef.
-
-Thu May 29 14:59:10 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (_CRTIMP): redefine _CRTIMP on MinGW.
-
-	* configure.in: remove '-D__USE_CRTIMP' from XCFLAGS on MinGW.
-
-	* win32/win32.c (NtMakeCmdVector): handle quotes only if not instring.
-
-Thu May 29 09:11:01 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (ev_const_defined, ev_const_get), variable.c
-	  (rb_const_get_at, rb_const_get, rb_mod_remove_const): use Qundef
-	  as autoload marker.  [ruby-dev:18103], [ruby-dev:18184]
-
-	* eval.c (rb_mod_autoload, rb_mod_autoload_p): new method;
-	  Module#autoload, Module#autoload?.
-
-	* variable.c (rb_autoload, rb_autoload_load, rb_autoload_p):
-	  manage autoload constants per classes/modules.
-
-	* variable.c (rb_const_defined_at, rb_const_defined): return false
-	  for autoloading constants.
-
-	* class.c (rb_define_class, rb_define_module), eval.c (rb_eval),
-	  variable.c (rb_mod_const_at, rb_const_assign): removed autoload
-	  stuff.
-
-	* intern.h: prototypes; rb_autoload, rb_autoload_load,
-	  rb_autoload_p.
-
-	* lib/optparse.rb (OptionParser::Switch::PlacedArgument::parse):
-	  do not treat unmatched argument as an option.
-
-Wed May 28 08:44:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_syscall): type dispatch should be based on
-	  rb_check_string_type(), not FIXNUM_P(), because values may be a
-	  bignum.  [ruby-talk:72257]
-
-Tue May 27 20:33:18 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c, util.c: removed duplicated includes/defines.
-
-	* ext/socket/socket.c (sock_addrinfo): get rid of SEGV at NULL ptr
-	  String.  increase buffer size for 64bit platforms.
-
-Tue May 27 02:34:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): should pass the current klass value to
-	  block_invoke, which may be called via "super". [ruby-core:01077]
-
-	* eval.c (block_invoke): now takes 4th argument "klass".
-
-	* eval.c (block_alloc): should propagate BLOCK_PROC to
-	  ruby_block.
-
-Mon May 26 23:51:38 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object0): should not use "yield" method, use "call"
-	  instead. (ruby-bugs-ja PR#476)
-
-Mon May 26 21:39:46 2003  MoonWolf  <moonwolf@moonwolf.com>
-
-	* lib/mkmf.rb, lib/optparse.rb, lib/tracer.rb: use Method#to_block
-	  instead of deprecated Method#to_proc.  (ruby-bugs-ja:PR#477)
-
-Mon May 26 21:21:20 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb (OptionParser::Switch::parse,
-	  OptionParser::order): use {Block,Proc}#call instead of deprecated
-	  #yield.
-
-Mon May 26 16:39:10 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_Proc): Block/Proc separation. [huge change]
-
-	* eval.c (block_arity): returns exact arity number for Procs out
-	  of methods. also gives 1 for {|a|..}.
-
-	* string.c (rb_str_match): revert use of String#index for
-	  invocation like string =~ string.
-
-	* eval.c (rb_Array): move Object#to_a exclusion hack from
-	  splat_value().  need to be in eval.c for a while.
-
-Sun May 25 23:48:21 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bignum.c (rb_quad_pack): should negate negative bignum.
-	  (ruby-bugs-ja:PR#474)
-
-Sun May 25 03:27:25 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: support LOGIN authentication, based on
-	  the patch by Kazuhiko Izawa. [ruby-talk:78981]
-
-Sat May 24 18:19:51 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/Makefile.sub: add eMbedded Visual C++ 4.0 support.
-
-	* wince/resource.rb: ditto.
-
-	* wince/setup.mak: ditto.
-
-	* wince/configure.bat: ditto.
-
-	* wince/mkexports.rb: delete japanese comments.
-
-Fri May 23 18:34:05 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_longjmp): get rid of reentering while debug warning.
-	  (ruby-bugs-ja:PR473)
-
-Fri May 23 15:16:16 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* pack.c (pack_unpack): sign-extend if sizeof long is bigger than
-	  32.  (ruby-bugs-ja:PR#472)
-
-Fri May 23 14:19:29 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_finalize): turn off ruby_debug flag before calling
-	  at_exit procs and finalizers. (ruby-bugs-ja:PR473)
-
-	* ext/tcltklib/tcltklib.c (lib_mainloop_core): OK to block if
-	  there's no other thread. (ruby-bugs:PR#861)
-
-Thu May 22 18:07:46 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/token.c: single- and double-quoted root-level fix.
-
-	* lib/yaml.rb (YAML::object_maker): can create object attributes (such as
-	  found in Exception class)
-
-	* lib/yaml/rubytypes.rb: roundtripping of Exception and subclasses.
-
-Fri May 23 01:26:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_clone): defer copying freezing state after
-	  calling initialize_copy().  [ruby-dev:20276]
-
-Thu May 22 17:12:10 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (run_final): use rb_thread_critical instead of DEFER_INTS.
-	  [ruby-dev:20272]
-
-	* marshal.c: try to make ArgumentError and TypeError consistent.
-	  [ruby-core:01068]
-
-Thu May 22 15:46:37 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_define_alloc_func): need not to disable
-	  rb_call_super() for allocation functions. [ruby-core:1065]
-
-Thu May 22 06:21:33 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c (rb_syck_err_handler): raise ArgumentError on
-	  malformed YAML.
-
-	* lib/yaml/rubytypes.rb: String#to_yaml was missing space indicators at
-	  the end of a line.
-
-Thu May 22 05:43:24 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c (syck_parser_load): root-level false was returning
-	  nil.
-
-	* ext/syck/token.c: root-level transfer method bug.
-
-	* ext/syck/gram.c: root-level empty gave a parse error.
-
-	* lib/yaml/rubytypes.rb: Symbol#to_yaml generating method call error.
-
-Thu May 22 02:46:38 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): splat NODE_RESTARY.  [ruby-dev:20268]
-
-	* eval.c (rb_thread_fd_close): raise for writing threads.
-	  [ruby-dev:20269]
-
-	* io.c (rb_io_close, io_reopen): ditto.
-
-	* io.c (io_reopen): keep stdio objects for stdin, stdout,
-	  and stderr.  [ruby-dev:19442]
-
-Thu May 22 01:11:15 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (strings, word_list): must create new instance always.
-	  http://yowaken.dip.jp/tdiary/20030521.html#p02
-
-	* parse.y (yylex): slight optimization.
-
-Wed May 21 23:07:08 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (rb_sys_fail): should not specify errno explicitly.
-	  [ruby-dev:20264]
-
-Wed May 21 20:51:47 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* Makefile.in, bcc32/Makefile.sub, win32/Makefile.sub,
-	  wince/Makefile.sub: update dependencies.
-
-Wed May 21 17:44:16 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (syserr_initialize): prohibit specifying errno for
-	  subclasses of SystemCallError.  in addition, if initialize is
-	  called for SystenCallError instance, its class be changed.
-	  [ruby-dev:20257]
-
-	* gc.c (run_final): to protect thread context switch, finalizers
-	  are wrapped in DEFER_INTS/ENABLE_INTS.
-
-Wed May 21 13:26:08 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb: get rid of warnings.
-
-Tue May 20 18:59:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_save_context): prohibit rb_gc_force_recycle()
-	  on thread saved ruby_dyna_vars. [ruby-dev:20236]
-
-Tue May 20 17:39:15 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (init_copy): call initialize_copy at the end of copy
-	  process.
-
-Tue May 20 17:15:55 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* error.c (syserr_initialize): use Errno constants as default
-	  errno for subclasses.  [ruby-dev:20241]
-
-Tue May 20 15:26:25 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* st.h: define ST_DATA_T_DEFINED for portability.
-
-	* ext/syck/syck.h: add typedef, st_data_t for Ruby 1.6.
-
-	* ext/syck/syck.c (syck_st_free_nodes): return int.
-
-	* ext/syck/syck.c (syck_add_sym): cast the data to st_data_t
-	  to avoid error on bcc32.
-
-	* ext/syck/syck.c (syck_lookup_sym): ditto.
-
-	* ext/syck/syck.c (syck_free_parser): NULL is not integer.
-
-Tue May 20 13:29:04 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (kill): set errno after calling raise().
-
-Tue May 20 10:51:26 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_f_missing): create exception instance by ordinal
-	  method.  [ruby-dev:20033]
-
-	* error.c (rb_name_error, rb_sys_fail): ditto.
-
-	* error.c (exc_to_s, exit_status, name_err_name,
-	  nometh_err_args, syserr_errno, syserr_eqq): access
-	  attributes.
-
-	* error.c (name_err_initialize, nometh_err_initialize,
-	  syserr_initialize): initialize attributes.
-
-Tue May 20 10:26:56 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): give warning for multiple values for a
-	  block parameter.
-
-	* eval.c (rb_yield_values): a function to yield multiple values.
-
-	* array.c (sort_1): use rb_yield_values.
-
-	* enum.c (min_ii, max_ii): ditto.
-
-	* hash.c (rb_hash_update_block_i, delete_if_i, select_i,
-	  each_pair_i, env_each, env_reject_bang, env_select,
-	  env_update_i): ditto.
-
-	* struct.c (rb_struct_each_pair): ditto.
-
-	* eval.c (top_include): should include module in the current self,
-	  not ruby_top_self. [ruby-dev:20198]
-
-	* eval.c (top_include): stop inclusion to ruby_wrapper; give
-	  warning.
-
-Mon May 19 18:54:30 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/token.c, ext/syck/implicit.c: expanded character set to
-	  allow UTF-8, other Ruby encodings.
-
-Mon May 19 16:47:00 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/syck.c, ext/syck/syck.h, ext/syck/token.c, ext/syck/gram.c:
-	  count line numbers only if line pointer has increased.
-
-Tue May 20 00:45:40 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (push_braces): do not push_braces() unless rbrace is found.
-	  (ruby-bugs-ja:PR#469)
-
-Tue May 20 00:09:41 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/pty/pty.c (pty_finalize_syswait): join (using Thread#value)
-	  before detach pid. [ruby-talk:71519]
-
-Mon May 19 23:02:10 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (PUSH_FRAME): save outer ruby_block. [ruby-list:37677],
-	  [ruby-dev:20202]
-
-	* eval.c (BEGIN_CALLARGS): restore outer block by using
-	  ruby_block->outer.
-
-	* eval.c (block_pass): do not alter block->prev, but block->outer.
-
-	* array.c (get_inspect_tbl): warning on wrong condition.
-
-Mon May 19 16:13:57 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* class.c: add #include "version.h".
-
-	* hash.c: ditto.
-
-	* string.c: ditto.
-
-Mon May 19 15:33:27 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (localjump_xvalue): renamed exitstatus to exit_value
-	  since it's not exit "status" after all.
-
-	* eval.c (localjump_error): add reason to LocalJumpError.
-
-	* compar.c (rb_cmpint): raise error via rb_cmperr(), if cmp value
-	  is nil. now take new 2 arguments.
-
-	* time.c (time_cmp): 2003-05-16 fix was incomplete.
-	  (ruby-bugs-ja:PR#458)
-
-Mon May 19 14:42:50 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_cmp): stupid comparison fixed.
-
-	* io.c (Init_IO): ARGF.path added (alias to ARGF.filename).
-	  [ruby-dev:20197]
-
-Mon May 19 13:58:03 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (init_copy): rename copy_object as initialize_copy,
-	  since it works as copy constructor.
-
-	* eval.c (rb_add_method): initialize_copy should always be
-	  private, like initialize.
-
-Mon May 19 13:51:50 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* re.c (rb_reg_quote): \n \r \f \v quoting was wrong.
-	  [ruby-dev:20203]
-
-	* re.c (rb_reg_quote): rb_reg_quote(" ") should be "\\ ", not
-	  "\\s".
-
-Mon May 19 08:08:51 2003  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: use warn() instead of $stderr.puts().
-
-	* sample/cal.rb: ditto.
-
-Sat May 17 12:02:25 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (get_inspect_tbl): check whether inspect_tbl value is a
-	  valid array. (ruby-bugs-ja PR#65)
-
-	* array.c (inspect_ensure,rb_protect_inspect,rb_inspecting_p):
-	  use get_inspect_tbl().
-
-Sat May 17 11:50:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_abort): call exit(1) if exception is raised.  This
-	  patch was made by Nobuyoshi Nakada <nobu.nokada@softhome.net> on
-	  2002-05-30.  (ruby-bugs-ja PR#236)
-
-	* signal.c: disable Ruby's interrupt handler at the beginning.
-	  (ruby-bugs-ja PR#236)
-
-Sat May 17 02:17:42 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/rational.rb (Integer::denominator): fixed typo.
-	  (ruby-bugs-ja:PR#466)
-
-Sat May 17 00:18:11 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/socket/socket.c (ruby_connect): connect() after EINPROGRESS
-	  returns EINVAL on some platforms, need to check true error
-	  status.  [ruby-core:01037]
-
-Sat May 17 00:21:51 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_class_allocate_instance): singleton class check
-	  moved to rb_obj_alloc(). (ruby-bugs-ja PR#345)
-
-Fri May 16 23:55:50 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_quote): should escape white space characters,
-	  \t, \f, \n, \r. (ruby-bugs-ja PR#231)
-
-Fri May 16 12:40:40 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): chain previous block to the pushing block.
-	  [ruby-list:37677]
-
-	* time.c (time_cmp): does not compare with numbers for
-	  interchangeability. (ruby-bugs-ja:PR#458)
-
-Thu May 15 21:55:54 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/gram.c: fixes to one-line documents and end of stream
-	  documents.
-
-	* ext/syck/syck.c, ext/syck/syck.h: add root_on_error to parser
-	  struct, specifying the symbol to be returned on a parse error.
-
-Thu May 15 18:44:31 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb (OpenURI::Redirect#initialize): call super to
-	  initialize mesg.
-
-	* lib/open-uri.rb (OpenURI::Meta#charset): call block to guess charset
-	  if block is given and charset is not given.
-
-Thu May 15 16:55:16 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_le): returns nil if two classes/modules are not
-	  in class-superclass relationship.
-
-	* object.c (rb_mod_cmp): uses new rb_mod_le() behavior.
-
-Thu May 15 07:45:30 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/rubyext.c, ext/syck/implicit.c: timestamp repairs to
-	  timezone and milliseconds.
-
-	* ext/syck/syck.c (syck_parser_reset_levels): duplicate string literal
-	  to avoid warning.
-
-Thu May 15 13:26:48 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_class_instance_methods): default will be changed in
-	  1.8.1.
-
-	* io.c (set_stdio): better message.
-
-Thu May 15 13:18:11 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (set_stdio): $stdin, $stdout, $stderr now became read-only.
-
-	* variable.c (readonly_setter): message changed.
-
-Thu May 15 09:50:51 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/syck/syck.c (syck_parser_pop_level): add prototype.
-
-	* ext/syck/syck.c (syck_strndup): should return value.
-
-Thu May 15 09:32:25 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (kill): fix typo and add signal 0 support.
-
-Wed May 14 20:09:26 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/gram.c: sequence-in-map shortcut, transfer methods on
-	  sequence-in-sequence, memory leak in mapping merge.
-
-	* ext/syck/syck.c: memory leak in domain anchoring.
-
-	* lib/yaml/rubytypes.rb, lib/yaml/types.rb: eliminated 1.6.x code.
-
-Wed May 14 19:56:43 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/syck/rubyext.c: add prototypes to avoid VC++ warnings.
-
-Wed May 14 12:23:46 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (Net::HTTP#start): should check whether HTTP
-	  session is opened before finishing. (ruby-bugs-ja:PR#463)
-
-Wed May 14 09:12:55 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: reduce warning. (ruby-bugs-ja:PR#462)
-
-Tue May 13 22:31:04 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* lib/yaml/rubytypes.rb, lib/yaml/types.rb: using Object#object_id
-	  rather than deprecated Object#id.
-
-	* ext/syck/token.c: changed ASCII escapes to octal notation.
-
-	* ext/Setup*: added entries for static linking of Syck extension.
-
-Tue May 13 20:31:58 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: add '--Wl,--enable-auto-import' to DLDFLAGS
-	  on Cygwin/MinGW.
-
-	* configure.in: add '-D__USE_CRTIMP' to XCFLAGS on MinGW.
-
-	* ext/syck/handler.c: add proper casts.
-
-	* ext/syck/syck.c: ditto.
-
-Tue May 13 17:58:08 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* configure.in, bcc32/Makefile.sub, win32/Makefile.sub: define
-	  HAVE_FSYNC.
-
-	* win32/win32.h (fsync): define as _commit().
-
-Tue May 13 15:35:35 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_match_exec): \Z changed to be consistent with new $
-	  (endbuf) behavior.
-
-Tue May 13 14:48:07 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (error_pos): use $deferr for output instead of stderr
-	  directly.
-
-	* eval.c (error_print,error_handle,rb_longjmp,rb_thread_schedule):
-	  ditto.
-
-Tue May 13 06:34:19 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* lib/yaml/rubytypes.rb: object and struct loading
-
-	* lib/yaml.rb: YAML::detect_implicit will discover typing for a Ruby
-	  string
-
-	* ext/syck/: Fixed portable comments, misuse of NULL and methods without
-	  return VALUEs.
-
-Mon May 12 18:08:21 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (Init_IO): new variable $deferr which is default output
-	  port of error messages.
-
-	* io.c (rb_warn_m): new method "warn". [new]
-
-	* error.c (warn_print): use $deferr.
-
-	* error.c (rb_bug): ditto.
-
-	* error.c (err_append): ditto.
-
-Sun May 11 13:50:12 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb: refine to_s test.
-
-	* lib/pp.rb (PP::ObjectMixin#pretty_print): refine to_s handling.
-
-Sun May 11 06:32:13 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/implicit.c, ext/syck/rubyext.c: transfer methods applied to
-	  native loading
-
-	* ext/syck/token.c: fix for transfer methods on same indentation as nested
-	  mapping
-
-	* lib/yaml/rubytypes.rb: all type names in lowercase
-
-Sat May 10 19:55:18 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ext/syck/gram.c ext/syck/handler.c ext/syck/implicit.c
-	  ext/syck/node.c ext/syck/rubyext.c ext/syck/syck.c
-	  ext/syck/syck.h ext/syck/token.c: updated to Syck 0.27
-
-	* lib/yaml/loader.rb: new YAML::Loader class
-
-	* lib/yaml.rb: loading of type families leverages YAML::DefaultLoader
-
-Sat May 10 19:00:08 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/string.c: file removed.
-
-	* wince/stdlib.c: file added.
-
-Sat May 10 16:17:02 2003  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (decode_utf7): new method.
-
-	* lib/net/imap.rb (encode_utf7): new method.
-
-Fri May  9 21:25:50 2003  why the lucky stiff <ruby-cvs@whytheluckystiff.net>
-
-	* ruby/ext/syck, ruby/lib/yaml: Initial checkin of YAML substances.
-
-Fri May  9 16:38:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_reopen): It should be possible to reopen closed IO.
-	  [ruby-talk:70941]
-
-	* io.c (rb_io_reopen): inherit original file mode unless specified.
-
-Thu May  8 18:44:09 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc): check odd alignment stack on m68k machines.
-
-Thu May  8 12:56:04 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* compar.c (rb_cmperr): raise comparison failure.
-
-	* intern.h: prototype; rb_cmperr
-
-	* numeric.c (flo_gt, flo_ge, flo_lt, flo_le, fix_gt, fix_ge,
-	  fix_lt, fix_le): should fail unless the argument is comparable.
-	  (ruby-bugs-ja:PR#456)
-
-	* numeric.c (int_upto, int_downto): should fail unless the
-	  argument is comparable.  (ruby-bugs-ja:PR#454)
-
-Wed May  7 13:30:11 2003  Masahiro TANAKA  <masa@ir.isas.ac.jp>
-
-	* numeric.c (num_step): better error treatment of float values.
-
-Tue May  6 17:51:54 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: rename method: POP3#mail_size -> n_mails
-
-	* lib/net/pop.rb: rename method: POP3#bytes -> n_bytes
-
-Tue May  6 17:21:01 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/bigdecimal/.cvsignore: new file.
-
-	* ext/zlib/.cvsignore: new file.
-
-Tue May  6 14:39:36 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_methods): list singleton methods if recur
-	  argument is false;  list all methods otherwise.
-
-Mon May  5 21:19:25 2003  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* ext/gdbm/gdbm.c (fgdbm_values_at): new method to replace
-	  select(index..).
-
-	* ext/sdbm/init.c (fsdbm_values_at): ditto.
-
-	* ext/dbm/dbm.c (fdbm_values_at): ditto.
-
-	* ext/dbm/dbm.c (DBM::VERSION): defined.
-
-	* ext/gdbm/testgdbm.rb: replace select with values_at.
-
-	* ext/sdbm/testsdbm.rb: ditto.
-
-	* ext/dbm/testdbm.rb: ditto.
-
-	* ext/dbm/testdbm.rb (setup): DBM.open(path, 0400) cause EACCESS
-	  on Berkeley DB[234].
-
-Mon May  5 22:57:07 2003  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* sample/cal.rb: use values_at instead of select.
-
-	* sample/biorhythm.rb: ditto.
-
-Mon May  5 18:59:45 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* sample/test.rb: substitute 'select' with 'values_at'.
-
-	* lib/date.rb: ditto.
-
-	* lib/parsedate.rb: ditto.
-
-Mon May  5 00:46:10 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_values_at): new method to replace select(index..).
-
-	* hash.c (rb_hash_values_at,env_values_at): ditto.
-
-	* re.c (match_values_at): ditto.
-
-	* struct.c (rb_struct_values_at): ditto.
-
-	* re.c (match_select): add iterator behavior.
-
-Sun May  4 19:08:53 2003  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: synchronized with date2 3.3.2.
-
-Sun May  4 15:21:18 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: ESMTP -> SMTP transition wrongly fails.
-
-Sun May  4 15:06:37 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: APOP did not work.  [ruby-dev:20149]
-
-Sat May  3 21:14:29 2003  Johan Holmberg  <holmberg@iar.se>
-
-	* ext/curses/curses.c, ext/digest/sha2/sha2.c, ext/iconv/iconv.c,
-	  ext/racc/cparse/cparse.c: include "ruby.h" at the top to shut up
-	  "_FILE_OFFSET_BITS redefined" warning on Solaris.
-
-Sat May  3 11:00:12 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_class_protected_instance_methods): now gives
-	  warnings to show migration path.  The default will be reversed
-	  on Jan 2004.
-
-Sat May  3 00:58:53 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_methods): now accepts recurse parameter.
-
-	* lib/delegate.rb (Delegator::initialize): instance_methods
-	  etc. now recurse by default.  need to specify false.
-
-Sat May  3 00:22:00 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: reintroduce Protocol.protocol_param.
-
-	* lib/net/http.rb: ditto.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/smtp.rb: ditto.
-
-Fri May  2 23:29:53 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: remove Protocol class.
-
-	* lib/net/smtp.rb (SMTP): ditto.
-
-	* lib/net/pop.rb (POP3): ditto.
-
-	* lib/net/http.rb (HTTP): ditto.
-
-	* lib/net/protocol.rb: remove Command class.
-
-	* lib/net/smtp.rb (SMTPCommand): ditto.
-
-	* lib/net/pop.rb (POP3Command): ditto.
-
-	* lib/net/pop.rb: remove APOPCommand class.
-
-	* lib/net/protocol.rb: remove Code class and its all subclasses.
-
-	* lib/net/protocol.rb: remove Response class and its all
-	  subclasses.
-
-	* lib/net/pop.rb (POPMail): new method unique_id (alias uidl).
-
-Fri May  2 18:17:37 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compar.c (cmp_gt): raises ArgumentError when "<=>" give nil.
-	  inspired by discussion on comp.lang.python.
-
-Fri May  2 17:37:01 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::initialize): updated to
-	  support 2003-04-23 change in cgi.rb [ruby-core:1002]
-
-Fri May  2 17:21:02 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (method_list): classify methods based on nearest
-	  visibility. [ruby-dev:20127]
-
-	* class.c (rb_class_instance_methods): recurse by default.  other
-	  method listing methods as well.
-
-Fri May  2 09:38:06 2003  Warren Brown  <wkb@airmail.net>
-
-	* string.c (rb_str_ljust): now takes optional argument to specify
-	  pad string. [ruby-talk:70482]
-
-	* string.c (rb_str_rjust): ditto.
-
-	* string.c (rb_str_center): ditto.
-
-	* string.c (rb_str_justify): utility function.
-
-Fri May  2 04:10:59 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_add_method): call singleton_method_added or
-	  method_added for every method definition (after ruby_running).
-	  [ruby-talk:70471]
-
-	* array.c (rb_ary_reverse_bang): Array#reverse! should not return
-	  nil even for arrays sized less than 2.
-
-Thu May  1 23:18:01 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_eof): should not block after reading all argument
-	  files. (ruby-bugs-ja PR#449)
-
-Fri May  2 15:10:41 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: use hashes to pass options.
-
-	* lib/fileutils.rb: new option mkdir(:mode), mkdir_p(:mode).
-
-	* instruby.rb: follow fileutils.rb feature change.
-
-Thu May  1 08:24:00 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_match_exec): $ _always_ matches at the end of string.
-
-Wed Apr 30 14:12:00 2003  wanowa.kimura@nifty.ne.jp (kimura wataru)
-
-	* net/imap.rb: support THREAD extension.
-
-Sun Apr 27 23:13:20 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* string.c (rb_str_to_i): disallow negative radix.
-	  [ruby-dev:20087]
-
-Sat Apr 26 23:34:42 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (open_args): warning message changed to "don't put space
-	  before argument parentheses".
-
-Sat Apr 26 14:25:00 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* wince/ : files removed.
-	           (config, dll.mak, exe.mak, mswince-ruby17.def,
-	            io.c, process.c, signal.c, string.c, time.c)
-
-	* wince/ : files added.
-	           (assert.c, Makefile.sub, mkexports.rb, io_wce.c,
-	            process_wce.c, signal_wce.c, string_wce.c,
-	            time_wce.c)
-
-	* wince/configure.bat : like mswin32 style.
-
-	* wince/direct.c : remove "static" at _currentdir.
-
-	* wince/io.h : change definition.
-
-	* wince/stdio.c : _fdopen -> fdopen.
-
-	* wince/process.h : add _P_OVERLAY.
-
-	* wince/time.h : change definition.
-
-	* wince/wincemain.c : add wce_SetCurrentDir.
-
-	* wince/wince.c : add wce_SetCurrentDir and wce_fopen.
-	                  fix GetModuleFileNameA to return correct "lpFileName".
-
-	* wince/wince.h : remove #ifdef.
-
-	* wince/sys/utime.h, utime.c : rename _utime to utime.
-
-	* wince/sys/stat.c : expand relative directory in stat.
-
-Sat Apr 26 06:33:04 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_read): ARGF.read() should read all argument files.
-
-Fri Apr 25 18:46:00 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* gc.c: STACK_LEVEL_MAX=65535 on mswince.
-
-Fri Apr 25 18:40:07 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_read): read should not span two files. [ruby-dev:20073]
-
-Fri Apr 25 18:19:03 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (splat_value): split splat_value() and avalue_splat().
-
-	* io.c: there's no way to set non-IO value to current_file, thus
-	  no need for argf_forward().
-
-Fri Apr 25 02:03:25 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): Proc#yield should pass through retry and
-	  break like keyword yield. [ruby-talk:70034]
-
-	* eval.c (proc_invoke): orphan Proc now raises LocalJumpError for
-	  break and retry again.
-
-	* eval.c (rb_eval): ARGSCAT should splat the argument.
-
-	* eval.c (splat_value): splat operation function.
-
-Thu Apr 24 23:37:02 2003  Dave Thomas  <dave@thomases.com>
-
-	* lib/matrix.rb (Matrix#minor):  Used Range#size, which no longer
-	  exists.
-
-	* lib/complex.rb (new!): Complex.new had been made private, but
-	  Kernel#Complex called it. Re-exposed as new!.
-
-	* lib/matrix.rb (Matrix.row_vector): Fix method name typo
-
-Thu Apr 24 19:40:02 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb: add -Wl,--no-undefined to LDSHARED only
-	  if GNU ld is 2.11 or later.
-
-Wed Apr 23 14:05:40 2003  Dave Thomas <dave@pragprog.com>
-
-	* lib/ipaddr.rb (include?): Support non-IPAddr parameters.
-	  [ruby-core:00980]
-
-Wed Apr 23 13:31:10 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::[]): always return Value
-	  object.
-
-Wed Apr 23 08:39:27 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/zlib/extconf.rb: bccwin32 is win32 too.
-
-Tue Apr 22 20:58:00 2003  Takaaki Uematsu  <uema2x@jcom.home.ne.jp>
-
-	* ruby.c: don't call VirtualQuery in ruby_init_loadpath()
-	  on mswince.
-
-Tue Apr 22 19:08:53 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c (save_mantissa, load_mantissa): for interoperability
-	  should count cut-down bit from topmost.
-
-Tue Apr 22 09:20:40 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg_ambiguous): hopefully better message.
-
-	* lib/cgi.rb (CGI::QueryExtension::initialize_query): to_ary
-	  removed.
-
-Tue Apr 22 06:06:22 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb (Resolv::DNS::Resource#hash): use XOR to accumulate
-	  hash value.
-
-	* lib/tsort.rb (TSort#each_strongly_connected_component): don't use
-	  block argument.
-	  (each_strongly_connected_component_from): ditto.
-
-Mon Apr 21 21:59:48 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c: one more digit for decimal point.  [ruby-talk:69808]
-
-Mon Apr 21 21:25:59 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* numeric.c (flo_is_finite_p): use finite() if available.
-
-	* win32/win32.h (isinf, isnan): define as macro.
-	  [ruby-win32:00533]
-
-	* bcc32/Makefile.sub, win32/Makefile.sub: no longer use
-	  missing/isinf.c, missing/isnan.c.
-
-Mon Apr 21 18:36:28 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bignum.c (rb_cstr_to_inum): unnecessarily long buffer was used
-	  for radix 9.  [ruby-dev:20057]
-
-Mon Apr 21 17:44:34 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (block_append, value_expr0, assign_in_cond,
-	  warn_unless_e_option, warning_unless_e_option, range_op,
-	  cond0): adjust line number in warning.
-
-Mon Apr 21 00:47:42 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* sample/test.rb: avoid the MSVCRT *printf problem(float).
-	  [ruby-dev:20037]
-
-Mon Apr 21 00:11:15 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c (w_float): append least mantissa bits to get rid
-	  of roundoff problem.  [ruby-talk:69518]
-
-	* marshal.c (r_object0): load least mantissa bits.
-
-Sun Apr 20 23:24:25 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (NtInitialize): set the floating-point control word
-	  on bcc32.
-
-	* win32/win32.h, bcc32/Makefile.sub: use missing/isinf.c, should not
-	  use _finite() because it returns 0 if NaN.
-
-Sun Apr 20 03:09:30 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* parse.y (void_expr0): node might become NULL after calling
-	  remove_begin().
-
-Sat Apr 19 21:55:10 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/Setup*: Add zlib and remove bogus and obsolete entries.
-
-Sat Apr 19 14:47:07 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc): use rb_gc_mark_maybe() to mark registered C
-	  addresses.  C variables may not hold valid reference to Ruby
-	  objects. [ruby-core:00975]
-
-Sat Apr 19 00:56:13 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_eql): should compare values with "eql?".
-
-Fri Apr 18 23:29:08 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_check): <=> returns nil for invalid values;
-	  should check.
-
-Fri Apr 18 15:26:50 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* error.c (rb_raise): workaround for some implementations of
-	  vsnprintf.
-
-Fri Apr 18 02:23:42 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): should not set RE_OPTIMIZE_ANCHOR,
-	  if anychar_repeat is enclosed by parentheses.
-
-Fri Apr 18 01:49:18 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* util.c (ruby_strtod): improved conversion accuracy.
-
-Thu Apr 17 14:39:23 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/dbm/dbm.c (each_pair): add prototype to avoid VC++ warnings.
-
-	* ext/readline/readline.c (Init_readline): follow readline 4.2
-	  prototype.
-
-Thu Apr 17 14:22:36 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (cond0): warn only range literals whose both side are
-	  literals.  [ruby-core:00964]
-
-Thu Apr 17 11:10:59 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/readline/readline.c: add the defined operator for bcc32.
-
-Wed Apr 16 00:14:06 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-special-char-p): should test at the
-	  point if no argument.  fixed by Michael Scholz
-	  <scholz-micha@gmx.de>.
-
-Tue Apr 15 19:35:08 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: rm_r should raise Errno::ENOENT if file
-	  does not exist ([ruby-core:958]).  Thanks Johan Holmberg.
-
-Tue Apr 15 19:12:21 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* struct.c (rb_struct_hash): new methods Struct#hash, Struct#eql?.
-	  (ruby-bugs:PR#758)
-
-Tue Apr 15 16:05:11 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* numeric.c (rb_fix2str): buffer was insufficient.
-	  (ruby-bugs-ja:PR#431)
-
-Mon Apr 14 19:45:56 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (file_expand_path): root must follow buf when
-	  reallocated.  [ruby-talk:69339], [ruby-dev:20025]
-
-Mon Apr 14 03:22:33 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rubyio.h (struct OpenFile): add noraise flag to finalizer.
-
-	* io.c (Init_IO): define $/, $-0, and $\ as string-only
-	  variables.
-
-	* string.c (rb_str_split_m): does not generate empty string if
-	  the receiver is empty.
-
-	* io.c (fptr_finalize): should raise error on EBADF for readable
-	  IOs as well.
-
-Mon Apr 14 15:54:18 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bignum.c (rb_cstr_to_inum, rb_big2str): allow 2-36 as radix.
-
-	* numeric.c (rb_fix2str): ditto.
-
-	* string.c (rb_str_to_i): ditto.
-
-Sun Apr 13 03:20:31 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (try_func): remove COMMON_HEADERS at first for
-	  performance.
-
-Sat Apr 12 20:59:40 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-beginning-of-arg): substitute
-	  ruby-backward-arg.
-
-	* misc/ruby-mode.el (ruby-calculate-indent): fixed wrong
-	  indentation in brace block and parentheses.
-
-	* misc/ruby-mode.el (ruby-forward-sexp, ruby-backward-sexp):
-	  support special char literal, and negative arguments.
-
-Sat Apr 12 17:52:47 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_stat): use rb_check_convert_type() to retrieve IO.
-
-Fri Apr 11 19:00:14 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (rb_w32_stat): check arguments.  [ruby-dev:20007]
-	  [ruby-win32:535]
-
-Fri Apr 11 15:56:08 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* numeric.c (coerce_rescue): prevent inspected String from GC.
-
-	* numeric.c (flo_eq, rb_dbl_cmp, flo_gt, flo_ge, flo_lt, flo_le,
-	  flo_eql): correct NaN comparison.  (ruby-bugs:PR#744)
-
-	* sample/test.rb: NaN comparison test.
-
-Fri Apr 11 14:48:47 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_stat): dereference using StringValuePtr().
-
-	* file.c (rb_file_s_stat): use rb_stat(). [ruby-dev:20007]
-
-Fri Apr 11 10:51:08 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/benchmark.rb (Benchmark::bm): get rid of warning.
-	  [ruby-talk:69124]
-
-Fri Apr 11 02:41:35 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (set_stdin): assigned value must respond to "read" and
-	  "getc".
-
-	* io.c (set_outfile): assigned value must respond to "write".
-	  (ruby-bugs-ja:PR#425)
-
-Thu Apr 10 21:12:19 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: Exception line was accidentally removed.
-	  [ruby-dev:19989]
-
-Thu Apr 10 18:42:13 2003  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* array.c (rb_ary_times): added some checks for request size.
-
-Thu Apr 10 03:22:38 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_name): always return empty string for
-	  anonymous class/module.  (ruby-bugs-ja PR#424)
-
-	* config.sub: stop forcing addition of -gnu to -linux.
-
-	* variable.c (classname): refactoring.
-
-	* variable.c (rb_class_path): __tmp__classpath__ handling moved
-	  from classname().
-
-Thu Apr 10 01:52:24 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_obj_is_method): indefinite return value.
-
-Thu Apr 10 00:39:32 2003  Tanaka Akira  <akr@m17n.org>
-
-	* regex.c (re_compile_pattern): /[\--\-]/ was warned.  warn /]/.
-
-	* mkconfig.rb: escape `]' in regexp.
-
-Thu Apr 10 00:27:07 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* time.c (time_strftime): RSTRING(format)->ptr might become NULL.
-
-Wed Apr  9 23:54:50 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_obj_remove_instance_variable): better message.
-	  [ruby-talk:68987]
-
-	* variable.c (rb_mod_remove_const): ditto.
-
-	* object.c (rb_obj_ivar_get): ditto.
-
-	* object.c (rb_obj_ivar_set): ditto.
-
-	* parse.y (yylex): ditto.
-
-Wed Apr  9 21:51:20 2003  Dave Thomas  <Dave@Thomases.com>
-
-	* eval.c (rb_mod_define_method): Allow UnboundMethod as
-	  parameter.
-
-Wed Apr  9 18:30:58 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (top_include): include module to wrapper module if
-	  wrapper is present. experimental.  [ruby-list:37539]
-
-Wed Apr  9 17:24:21 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_mark_children): introduce this function again; this
-	  is required when stack was very tight. [ruby-talk:68916]
-
-Wed Apr  9 15:49:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivmod): small typo.
-
-Wed Apr  9 15:35:04 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/readline/readline.c: include <unistd.h> only when
-	  HAVE_UNISTD_H is defined.
-
-Wed Apr  9 14:05:00 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c (w_object): preserve extended module on struct.
-	  (ruby-bugs-ja:PR#422)
-
-Wed Apr  9 03:43:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (BIGZEROP): macro to determine if x is a bignum zero.
-
-Tue Apr  8 11:49:31 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_Proc): make Method and UnboundMethod independent.
-	  They are like instance and its class. [ruby-core:00941]
-
-	* parse.y (yylex): disallow global variables like "$1ve".
-	  [ruby-core:00945]
-
-	* marshal.c (marshal_dump): Marshal.dump(0, false) should cause an
-	  error. (ruby-bugs-ja PR#421)
-
-	* regex.c (re_compile_pattern): warn if '-' is the edge of
-	  character range.
-
-Mon Apr  7 15:49:09 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_unpack_sockaddr_in): remove struct
-	  size check.  getnameinfo(3) can handle. [ruby-dev:19967]
-
-Mon Apr  7 01:33:31 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_read): do not call rb_sys_fail() when required data
-	  length is zero. (ruby-bugs-ja PR#420)
-
-	* eval.c (umethod_proc): should raise TypeError, instead of
-	  returning error causing Proc.  Following the principle of "fail
-	  early".  [ruby-core:00927]
-
-Sun Apr  6 18:29:21 2003  UENO Katsuhiro  <katsu@blue.sky.or.jp>
-
-	* ext/zlib/zlib.c: the return value of GzipReader#getc must be
-	  unsigned.
-
-Sun Apr  6 00:35:37 2003  Tanaka Akira  <akr@m17n.org>
-
-	* sample/exyacc.rb: use Regexp in gsub!.
-
-Sat Apr  5 23:41:28 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): small but serious typo.
-
-Sat Apr  5 04:23:05 2003  Warren Brown  <wkb@airmail.net>
-
-	* sprintf.c (rb_f_sprintf): was decrementing width even if there
-	  is no sign character.
-
-Sat Apr  5 01:41:28 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (backtrace): skip internal allocator frame.
-	  (ruby-bugs-ja PR#416)
-
-Fri Apr  4 10:53:22 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (assign): should prepare mrhs by svalue_to_mrhs().
-
-Wed Apr  2 15:11:23 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* README.EXT, README.EXT.ja (3.3): clarified -1 as free for
-	  Data_Wrap_Struct().  [ruby-dev:19881]
-
-Mon Mar 31 11:11:36 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_missing): use "inspect" for T_OBJECT as well.
-
-Mon Mar 31 10:50:48 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (env_reject_bang): untaint key string.
-
-	* hash.c (env_delete_m): execute block only if deleting key does
-	  not exist.
-
-Sat Mar 29 17:54:46 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): do not call rb_str_buf_cat() with NULL ptr,
-	  which causes SEGV; jump to grow instead. [ruby-dev:19944]
-
-Sat Mar 29 15:19:48 2003  Tanaka Akira  <akr@m17n.org>
-
-	* instruby.rb, ext/extmk.rb, lib/benchmark.rb, lib/cgi.rb,
-	  lib/debug.rb, lib/getoptlong.rb, lib/optparse.rb, lib/time.rb,
-	  lib/date/format.rb, lib/irb/ruby-lex.rb lib/uri/common.rb: revert
-	  escape for `-' in character class.
-
-Sat Mar 29 09:48:35 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (avalue_to_svalue): use rb_check_array_type() again.
-	  Clarify how "to_ary" and "to_a" work. [ruby-talk:68155]
-
-	* eval.c (svalue_to_avalue): ditto.
-
-	* eval.c (svalue_to_mrhs): ditto.
-
-	* eval.c (rb_eval): unary splat to use to_a, but we need a hack to
-	  exclude Object#to_a until it's removed.
-
-	* object.c (rb_Array): check obj.respond_to?("to_a").  Currently
-	  all object respond_to "to_a", but Object#to_a will be removed.
-
-	* range.c (Init_Range): undefine to_ary.
-
-	* re.c (Init_Regexp): ditto.
-
-Sat Mar 29 09:47:52 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* MANIFEST (ext/aix_mksym.rb): remove obsolete file.
-
-Fri Mar 29 06:21:24 2003  UENO Katsuhiro  <katsu@blue.sky.or.jp>
-
-	* ext/zlib: merge from rough.
-
-Fri Mar 28 19:33:39 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* variable.c (rb_class_path): hold temporary class path in a
-	  instance variable to get rid of GC.  [ruby-dev:19932]
-
-	* variable.c (classname): remove temporary class path when exact
-	  name found.
-
-Fri Mar 28 18:29:23 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): do not warn if "-" is at the top
-	  or last of character class.
-
-Thu Mar 27 12:10:15 2003  Tanaka Akira  <akr@m17n.org>
-
-	* regex.c (re_compile_pattern): fix [:name:] handling.
-	  /[\[:digit:]]/ was treated as /[[:digit:]]/.
-	  /[[:-@]/ was treated as /[\[:\-@]/.
-	  /[%-[:digit:]]/ was treated as /[%-\[:digit:]\]/.
-
-Thu Mar 27 03:26:40 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* string.c (rb_str_capitalize_bang): check length before upcase
-	  first character.  (ruby-bugs:PR#697)
-
-Wed Mar 26 20:25:10 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* dln.c (dln_find_1): break if path list end, even for too long
-	  path names.  (ruby-bugs-ja:PR#412)
-
-Wed Mar 26 13:19:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (avalue_splat): new function to do unary * (splat)
-	  operator.
-
-	* eval.c (avalue_to_svalue,svalue_to_avalue,svalue_to_mrhs): do
-	  not use implicit "to_ary" conversion.
-
-	* ext/curses/curses.c (GetWINDOW,GetMOUSE): add taint check.
-
-	* ext/curses/curses.c (curses_init_screen): ditto.
-
-	* ext/curses/curses.c (window_initialize): ditto.
-
-	* gc.c (os_each_obj): prohibit ObjectSpace#each_object in safe
-	  mode ($SAFE >= 4).
-
-Tue Mar 25 23:26:02 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (trap): return "DEFAULT" and "IGNORE" respectively for
-	  previous sighandler SIG_DFL and SIG_IGN. [ruby-talk:67860]
-
-Tue Mar 25 12:24:15 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): call avalue_to_mrhs() to assign block
-	  parameter |a|. [ruby-dev:19897]
-
-	* ruby.c (ruby_set_argv): freeze argument strings.
-
-Tue Mar 25 12:01:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_initialize): should check rb_secure(4).
-
-	* dir.c (dir_s_getwd): should check rb_secure(4).
-
-	* object.c (rb_obj_infect): function version of OBJ_INFECT().
-
-	* eval.c (rb_secure_update): new function to check object update.
-
-Tue Mar 25 10:18:05 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: should infect also return values of
-	  #inspect.
-
-	* ext/strscan/strscan.c: use snprintf() instead of sprintf().
-
-Mon Mar 24 16:55:04 2003  Takaaki Tateishi <ttate@ttsky.net>
-
-	* ext/dl/dl.c: added rb_secure(4). (Thanks to Minero Aoki)
-
-	* ext/dl/sym.c: ditto.
-
-	* ext/dl/ptr.c: ditto.
-
-Mon Mar 24 00:09:02 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (block_append): warn unused literal.
-
-Sun Mar 23 22:22:04 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/jcode.rb (tr!, delete!, szueeze!): add empty string checking.
-
-Sun Mar 23 19:54:53 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): use free() if dfree is -1.
-
-Sat Mar 22 15:50:29 2003  Tanaka Akira  <akr@m17n.org>
-
-	* time.c (make_time_t): try search_time_t if mktime/timegm is failed.
-
-Sat Mar 22 13:26:33 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/optparse.rb, lib/jcode.rb, ext/tk/lib/tk.rb: reorder character
-	  class /[\]\[]/ to /[\[\]]/ for readability.
-
-Sat Mar 22 12:44:15 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/date/format.rb, lib/uri/common.rb: escape `[', `]', `-' in
-	  character class in regexp to avoid warning.
-
-Sat Mar 22 07:39:32 2003  Ulf Betlehem  <flu@iki.fi>
-
-	* io.c (rb_io_fread): may lose data on nonblocking read.
-
-Fri Mar 21 23:40:41 2003  Tanaka Akira  <akr@m17n.org>
-
-	* regex.c (re_compile_pattern): fix previous change.
-
-	* instruby.rb, ext/extmk.rb, ext/tk/lib/tk.rb, lib/benchmark.rb,
-	  lib/cgi.rb, lib/debug.rb, lib/getoptlong.rb, lib/jcode.rb,
-	  lib/optparse.rb, lib/time.rb, lib/date/format.rb,
-	  lib/irb/ruby-lex.rb: escape `[', `]', `-' in character class in
-	  regexp to avoid warning.
-
-Fri Mar 21 23:23:45 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): give warning for unescaped square
-	  brackets and minus in character class. [ruby-dev:19868]
-
-Fri Mar 21 18:12:20 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (bmcall): missing type.
-
-Fri Mar 21 01:29:35 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): copy sign bits only if value is
-	  negative.
-
-	* missing.h: include <stdarg.h> or <varargs.h> if HAVE_VSNPRINTF
-	  is not defined.
-
-Thu Mar 20 18:31:37 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb (OptionParser#order!): follow recent change
-	  of proc argument.
-
-Thu Mar 20 16:12:53 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_to_s): change format specifier to "%.15g" to
-	  avoid unnecessary 9s (e.g. 99.59999999999999). (ruby-bugs-ja PR#406)
-
-Thu Mar 20 16:03:18 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (stmt, primary): get rid of SEGV at empty or invalid
-	  condition.  (ruby-bugs-ja:PR#410)
-
-	* parse.y (cond_negative): negate condition node when NODE_NOT.
-
-Thu Mar 20 10:45:29 2003  Tanaka Akira  <akr@m17n.org>
-
-	* eval.c (bmcall): add volatile to avoid GC problem.
-
-Thu Mar 20 10:10:49 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (load_dyna): clear ruby_errinfo. (ruby-bugs-ja PR#409)
-
-Wed Mar 19 23:05:30 2003  NAKAMURA, Hiroshi <nahi@ruby-lang.org>
-
-	* lib/tracer.rb (trace_func): save and recover Thread.critical state.
-	  Fixed by Fukumoto Atsushi <fukumoto@imasy.or.jp> [ruby-dev:19830]
-
-Wed Mar 19 02:55:46 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): make str empty if given. (ruby-bugs-ja PR#408)
-
-	* io.c (io_read): ditto.
-
-	* io.c (rb_io_sysread): ditto.
-
-Tue Mar 18 18:24:03 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c: do not override min and max.
-
-Sun Mar 16 12:29:55 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (object_address_group): use to_s instead of name
-	  to get name of class.
-
-Fri Mar 14 08:53:29 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (remove_sign_bits): octal left most digit for negative
-	  numbers may be '3'. (ruby-bugs-ja PR#407)
-
-	* sprintf.c (rb_f_sprintf): should prefix sign bits if bignum is
-	  negative, using sign_bits().
-
-Wed Mar 12 16:48:19 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (prep_stdio): set binmode only if the file descriptor
-	  is not connected to a terminal on Cygwin.
-
-Wed Mar 12 11:23:49 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (avalue_to_mrhs): split argument passing and assignment
-	  conversion.
-
-	* eval.c (svalue_to_mrhs): ditto.
-
-	* eval.c (avalue_to_svalue): avalue_to_svalue([[1,2]]) should be
-	  [[1,2]], not [1,2] to wrap-around.
-
-Tue Mar 11 21:00:59 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: Digest string wrongly included '\n' when user
-	  name is too long (ruby-bugs-ja:PR#404).
-
-Tue Mar 11 20:07:01 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: speeding up by avoiding extra flush.
-	  (suggested by Brian Candler <B.Candler@pobox.com> [ruby-talk:66516])
-
-Tue Mar 11 04:30:12 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (massign): remove unnecessary array unpacking; it should
-	  be handled before massign() by svalue_to_mrhs().
-
-	* eval.c (svalue_to_mrhs): '*a = v' value conversion to avalue
-	  (i.e. [1] => [[1]], [1,2] => [1,2]).
-
-	* eval.c (rb_eval): use svalue_to_mrhs.
-
-	* eval.c (rb_yield_0): ditto.
-
-	* eval.c (proc_invoke): break from "Proc#yield" is legal.
-
-Mon Mar 10 23:19:29 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_find_file): need world writable directory check for
-	  relative paths too.
-
-Mon Mar 10 11:23:00 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_find_file): world writable directory check if
-	  $SAFE >= 1 (was $SAFE >= 2).
-
-Mon Mar 10 01:59:47 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: do not dispatch LIST when a mailbox is empty.
-
-	* lib/net/pop.rb: merge the 'STAT' patch from Frank S.Fejes
-	  <frank@oopdreams.com>, with modifications (listed below).
-
-	* lib/net/pop.rb: new method Net::POP#mail_size.
-
-	* lib/net/pop.rb: new method Net::POP#bytes.
-
-	* lib/net/pop.rb: new method Net::POPCommand#stat.
-
-Sun Mar  9 19:30:25 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/fileutils.rb (mkdir, mkdir_p): revert.
-
-	* instruby.rb (umask): umask 0022, not 0.
-
-Sun Mar  9 17:09:40 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/fileutils.rb (mkdir, mkdir_p): set mode to 0755.
-
-	* Makefile.in (fake.rb): set ALT_SEPARATOR to the default value.
-
-Sat Mar  8 11:30:59 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (massign): fix a bug not to expand in assignment to sole
-	  lhs.  [ruby-dev:19766]
-
-Fri Mar  7 21:57:25 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (Kernel.pp): module function.
-	  (MatchData#pretty_print): new method.
-
-Fri Mar  7 20:27:19 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/tcltklib/extconf.rb (find_tcl, find_tk): return true if
-	  non-versioned found.  [ruby-dev:19759]
-
-Fri Mar  7 15:05:35 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/dbm/extconf.rb: add QDBM support.
-
-Fri Mar  7 12:59:39 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (massign): deal with sole lhs, assign rest args from
-	  converted array.  [ruby-dev:19751]
-
-Fri Mar  7 03:31:36 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (dsym): :"symbol string" style should not contain `\0'.
-
-	* process.c (proc_detach): new method Process.detach(pid) which
-	  create background watcher thread to issue waitpid. [new]
-
-	* process.c (rb_detach_process): utility function to detach
-	  process from C code.
-
-	* ext/pty/pty.c (pty_finalize_syswait): terminate watcher thread,
-	  and detach child process (by creating new idle waitpid watcher
-	  thread).
-
-	* ext/pty/pty.c (pty_syswait): may lost signal stopped child.
-
-Fri Mar  7 00:30:33 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/Win32API/Win32API.c: no longer use inline-asms.
-
-	* ext/Win32API/extconf.rb: no need to add gcc options.
-
-Thu Mar  6 13:02:10 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (reswords): fix reswords list.
-
-Wed Mar  5 12:13:21 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: better YACC support on HP-UX.
-
-Wed Mar  5 05:55:20 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cat): remove ptr NULL check and MEMZERO(). ptr
-	  must be non NULL.
-
-Tue Mar  4 23:12:07 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in, bcc32/Makefile.sub, win32/Makefile.sub: define
-	  RUBY_EXPORT to export symbols.
-
-	* defines.h: use RUBY_EXTERN instead of EXTERN.
-
-	* intern.h, re.h, ruby.h, rubysig.h: ditto.
-
-	* win32/win32.h: remove EXTERN definition.
-
-Tue Mar  4 17:54:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_aref): raise TypeError if index is a symbol.
-	  [ruby-list:37217]
-
-	* array.c (rb_ary_aset): ditto.
-
-Tue Nov 13 14:39:11 2001  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* missing/strftime.c: HP-UX support.
-
-Tue Mar  4 15:08:08 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: better HP-UX support.
-
-	* missing/strftime.c: ditto.
-
-Tue Mar  4 10:11:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_popen): do not call rb_io_close() directly, call
-	  "close" method instead. [ruby-dev:19717]
-
-	* io.c (rb_io_s_open): ditto.
-
-	* hash.c (rb_any_hash): remove DEFER_INTS.  all do_hash() calls in
-	  st.c are at the top of functions.  No reentrant problem.
-
-Tue Mar  4 01:19:21 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/dl/MANIFEST: Exclude .cvsignore. [found by: eban]
-
-Tue Mar  4 01:17:08 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/Win32API/MANIFEST: Belatedly add lib/win32/registry.rb.
-	  [found by: eban]
-
-Tue Mar  4 00:33:04 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* MANIFEST: Belatedly add Test::Unit files.  D'oh!
-
-Sun Mar  2 09:51:47 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c (w_nbyte): should output always via rb_io_write().
-
-	* marshal.c (dump_ensure): ditto.
-
-	* marshal.c (marshal_dump): should call "binmode" method, if it
-	  responds to.
-
-	* marshal.c (r_byte): should input always via "getc" method.
-
-	* marshal.c (r_bytes0): should input always via "read" method.
-
-	* marshal.c (marshal_load): need not to set up FILE* fp;
-
-Mon Mar  3 11:29:04 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): parse 'lhs = a rescue b' as 'lhs=(a rescue b)'.
-
-Mon Mar  3 02:53:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_fread): should not clearerr() if there's no filled
-	  buffer (i.e. rb_io_fread() returning zero).
-
-Mon Mar  3 01:42:35 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-expr-beg): escaped char syntax.
-
-	* misc/ruby-mode.el (ruby-parse-partial): ditto.
-
-	* misc/ruby-mode.el (ruby-parse-partial): no deep indent for
-	  block.
-
-	* misc/ruby-mode.el (ruby-backward-arg): skip arguments backward.
-
-	* misc/ruby-mode.el (ruby-calculate-indent): too deep indentation.
-
-Fri Feb 28 23:50:32 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (map_errno): map OS error to errno. [new]
-
-	* win32/win32.c (pipe_exec, CreateChild, poll_child_status, waitpid,
-	  kill, link, rb_w32_rename, unixtime_to_filetime, rb_w32_utime): use
-	  map_errno() instead of using GetLastError() directly.
-
-	* 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): map winsock error to errno.
-
-Fri Feb 28 22:54:10 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (flock): supports larger files, and maps error
-	  code.
-
-	* win32/win32.c (rb_w32_asynchronize): returns errno from child
-	  thread.
-
-	* win32/win32.c (rb_w32_fclose, rb_w32_close): ensures unlocked.
-
-Wed Feb 26 17:38:16 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: replace Kernel.open as well.
-
-Tue Feb 25 23:03:08 2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/debug.rb (DEBUGGER__::Context#debug_command): bp filename must
-	  be the basename of it.  [ruby-talk:65644]
-
-Mon Feb 24 17:49:35 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (yycompile): zero clear ruby_eval_tree_begin if
-	  compilation failed.
-
-Mon Feb 24 08:06:29 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_new): need no MEMZERO().
-
-Sun Feb 23 17:57:06 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/fileutils (fu_stream_blksize): wrong logical condition.
-	  (and -> or).
-
-Sat Feb 22 03:12:56 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_gt): use rb_num_coerce_cmp() instead of
-	  rb_num_coerce_bin.
-
-	* numeric.c (fix_ge, fix_lt, fix_le): ditto.
-
-	* numeric.c (flo_gt, flo_ge, flo_lt, flo_le): ditto.
-
-Sat Feb 22 02:45:20 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_create): may called from place higher than
-	  rb_gc_stack_start.
-
-	* gc.c (Init_stack): update rb_gc_stack_start if it is lower (or
-	  higher if stack grows down) than the previous value.
-
-Fri Feb 21 21:03:41 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: new method FileUtils#copy_stream.
-
-	* lib/fileutils.rb: new method FileUtils#compare_file.
-
-	* lib/fileutils.rb: new method FileUtils#compare_stream.
-
-	* lib/fileutils.rb: new method FileUtils#rmtree (alias of rm_rf).
-
-Fri Feb 21 17:19:27 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* eval.c (rb_f_require): do not need to abort if a DLEXT file
-	  is not found.
-
-Fri Feb 21 13:39:25 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cmp_m): should use LONG2NUM().
-
-Fri Feb 21 12:45:50 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cmp_m): two small bugs fixed.
-
-Fri Feb 21 08:03:09 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_mark): inline rb_gc_mark_children().
-
-	* gc.c (gc_sweep): new tactics to increase malloc_limit mildly.
-
-Fri Feb 21 05:16:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cmp_m): return nil if str2 does not respond to
-	  both "to_str" and "<=>".
-
-	* compar.c (cmp_gt): return nil if "<=>" returns nil (means
-	  incomparable).
-
-	* compar.c (cmp_ge, cmp_lt, cmp_le): ditto.
-
-	* compar.c (cmp_between): use RTEST(), since cmp_lt and cmp_gt may
-	  return nil.
-
-Thu Feb 20 19:05:51 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): main thread swapped by fork() may
-	  terminate rb_thread_start_0() successfully. call ruby_stop(0);
-	  this change was suggested by Rudi Cilibrasi
-	  <cilibrar@drachma.ugcs.caltech.edu>.
-
-Thu Feb 20 18:44:51 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (file_expand_path): fix wrong behavior for root file.
-	  expand_path("..", "//machine/share") => "//machine/share"
-	  expand_path("..", "c:/a") => "c:/"
-	  expand_path("..", "/a") => "/"
-
-Thu Feb 20 18:11:01 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (file_expand_path): should not upward beyond share name.
-
-Thu Feb 20 15:45:33 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* missing.h (strtoul): fix prototype of strtoul.
-
-Thu Feb 20 10:11:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (clhs): allow "Foo::Bar = x".
-
-Thu Feb 20 04:07:06 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (primary): "self[n]=x" can be legal even when "[]=" is
-	  private.  changes submitted in [ruby-talk:63982]
-
-	* parse.y (aryset): ditto.
-
-	* parse.y (attrset): "self.foo=x" can be legal even when "foo="
-	  is private.
-
-	* eval.c (is_defined): private "[]=" and "foo=" support.
-
-	* eval.c (rb_eval, assign): ditto.
-
-Thu Feb 20 03:58:34 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): "foo=" should not always be public.
-
-Thu Feb 20 01:23:59 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_restore_context): inhibit interrupts in
-	  critical section while context switching.  [ruby-talk:64785]
-
-Wed Feb 19 18:27:42 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* node.h (nd_cpath): nested class/module declaration.
-	  [EXPERIMENTAL]
-
-	* eval.c (rb_eval): ditto.
-
-	* gc.c (rb_gc_mark_children): ditto.
-
-	* parse.y (cpath): ditto.
-
-Tue Feb 18 21:39:27 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): should not report uninitialized warning by
-	  attribute reader method.
-
-	* variable.c (rb_attr_get): new function to get instance variable
-	  without uninitialized warning.
-
-	* io.c (argf_to_io): should prefetch argv.
-
-Tue Feb 18 00:13:50 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-comment-column): customize comment
-	  column.  [new]
-
-	* misc/ruby-mode.el (ruby-deep-indent-paren): deep indentation
-	  parentheses.  [new]
-
-	* misc/ruby-mode.el (ruby-expr-beg): fix for / after $?.
-
-	* misc/ruby-mode.el (ruby-parse-partial, ruby-calculate-indent):
-	  deep indentation support.
-
-	* misc/ruby-mode.el (ruby-forward-sexp, ruby-backward-sexp):
-	  move forward/backward across one balanced expression.  [new]
-
-	* misc/ruby-mode.el (ruby-indent-exp): indent balanced
-	  expression.  [new]
-
-	* misc/ruby-mode.el (ruby-electric-brace): indent before
-	  show matching parenthesis.  (contributed by NABEYA Kenichi)
-
-Mon Feb 17 14:36:56 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (rb_w32_opendir, rb_w32_utime): need parens.
-
-Mon Feb 17 14:13:25 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (link): implement with CreateHardLink().
-
-	* win32/win32.c, win32/win32.h (rb_w32_utime): enable utime() to
-	  directory if on NT. [new] (ruby-bugs-ja:PR#393)
-
-Mon Feb 17 13:28:51 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (file_expand_path): strip last slash when path is
-	  root.
-
-Sun Feb 16 19:22:31 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (file_expand_path): buffer might be reallocated while
-	  expanding default directory.
-
-	* file.c (file_expand_path): default directory was being
-	  ignored if path was full path with no drive letter, under
-	  DOSISH.
-
-Sun Feb 16 03:14:33 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (prep_stdio, Init_io): always set binmode on Cygwin.
-
-Sat Feb 15 01:01:45 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (file_expand_path): fix surplus path separators while
-	  expanding at root directory.  [ruby-dev:19572]
-
-Fri Feb 14 14:25:24 2003  akira yamada  <akira@arika.org>
-
-	* lib/uri/generic.rb, lib/uri/ldap.rb, lib/uri/mailto.ldap: all foo=()
-	  returns arguments passed by caller.
-
-	* lib/uri/generic.rb (Generic#to_str, Generic#to_s): removed to_str.
-	  Suggested by Tanaka Akira <akr@m17n.org> at [ruby-dev:19475].
-
-	* lib/uri/generic.rb (Generic#==): should not generate an URI object
-	  from argument. Suggested by Tanaka Akira <akr@m17n.org> at
-	  [ruby-dev:19475].
-
-Thu Feb 13 11:54:50 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ruby.c (ruby_init_loadpath): ensures buffer terminated
-	  before use strncpy().
-
-	* ruby.c (proc_options): avoid SEGV at -S with no arguments.
-	  script argument is in effect only when -e is not given.
-	  (ruby-bugs-ja:PR#391)
-
-Thu Feb 13 01:30:10 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_schedule): current thread may be dead when
-	  deadlock.  (ruby-bugs:PR#588)
-
-Thu Feb 13 00:28:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): step might be float 0 < x < 1.
-
-	* eval.c (rb_thread_schedule): pause if no runnable thread when
-	  there's only one thread.
-
-Thu Feb 13 00:09:47 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (strrdirsep): ignore trailing directory separators.
-
-	* file.c (rb_file_s_expand_path): File.expand_path(".","/") should
-	  return "/".  (ruby-bugs-ja:PR#389)
-
-	* file.c (rb_file_s_basename): also ignore trailing directory
-	  separators, in compliance with SUSv3.  (ruby-bugs-ja:PR#390)
-
-	* file.c (rb_file_s_dirname, rb_file_s_extname): ditto.
-
-	* file.c (rb_file_s_dirname): append "." if drive only.
-
-	* file.c (rb_file_s_split): get rid of converting twice.
-
-Mon Feb 10 20:55:15 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb (parse_args): add '-n' to $mflags BEFORE "--".
-	  do not add DESTDIR if already included in $mflags.
-
-Mon Feb 10 19:54:30 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (FileUtils#uptodate?): use mtime for
-	  comparison.
-
-Mon Feb 10 10:14:26 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_to_a): return value should be an Array if the
-	  receiver is an instance of subclass of Array.
-
-	* string.c (rb_str_to_s): return value should be a String if the
-	  receiver is an instance of subclass of String.
-
-Mon Feb 10 03:33:42 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (rb_file_sysopen): rb_file_sysopen_internal() needs four
-	  arguments.
-
-Sun Feb  9 15:16:04 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* intern.h (HAVE_RB_DEFINE_ALLOC_FUNC, RB_CVAR_SET_4ARGS):
-	  define to 1.
-
-	* ruby.h (NORETURN_STYLE_NEW): ditto.
-
-Sun Feb  9 12:28:18 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (init_mkmf): add libdir to LIBPATH unless cross
-	  compiling.
-
-Sun Feb  9 08:34:45 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: 4xx raises Net::ProtoServerError, 5xx raises
-	  Net::ProtoFatalError (for backward compatibility).
-
-Sun Feb  9 07:07:26 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: new method FileUtils.pwd (really).
-
-	* lib/fileutils.rb: FileUtils.pwd, cmp, identical?, uptodate? does
-	  not accept any option.
-
-Sat Feb  8 18:35:30 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-forward-string): fixed void variable
-	  error.
-
-Sat Feb  8 16:23:11 2003  NABEYA Kenichi  <kenichi@nabeya.com>
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords): method name can
-	  be delimited by tab.
-
-Sat Feb  8 03:57:32 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/irb/workspace.rb, lib/irb/ext/math-mode.rb,
-	  lib/irb/ext/multi-irb.rb, lib/irb/lc/error.rb,
-	  lib/irb/lc/help-message, lib/irb/lc/ja/error.rb,
-	  lib/shell/command-processor.rb, lib/shell/error.rb,
-	  lib/shell/filter.rb: Fix typos and grammos. [approved by: keiju]
-
-Sat Feb  8 03:34:28 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* intern.h (HAVE_RB_DEFINE_ALLOC_FUNC): New boolean macro to make
-	  it easier to write extensions that work with both ~1.6 and 1.8~.
-
-	* intern.h (RB_CVAR_SET_4ARGS): Ditto.
-
-	* ruby.h (NORETURN_STYLE_NEW): Ditto.
-
-Sat Feb  8 00:47:24 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call): calls method_missing when superclass method
-	  does not exist.
-
-	* eval.c (rb_f_missing): now handles "no super" case.
-
-	* object.c (rb_obj_ivar_get): Object#instance_variable_get: new
-	  method to get instance variable value without eval(). [new]
-
-	* object.c (rb_obj_ivar_set): Object#instance_variable_set: new
-	  method to set instance variable value without eval(). [new]
-
-Fri Feb  7 15:35:21 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* intern.h, re.c (rb_memsearch): returns long.
-
-	* string.c (rb_str_index): should return offset position.
-
-Fri Feb  7 15:30:15 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (proc_invoke): should propagate self to super
-	  methods.  [ruby-dev:19510]
-
-Thu Feb  6 19:04:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): should not preset "kcode" unless
-	  encoding is explicitly specified.
-
-Thu Feb  6 19:01:32 2003  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: new method FileUtils.pwd.
-
-	* lib/fileutils.rb: default label is ''.
-
-	* lib/fileutils.rb: using module_eval again, to avoid ruby's bug.
-
-	* lib/fileutils.rb: fix wrong examples in rdoc.
-
-Thu Feb  6 17:43:56 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/complex.rb (Complex#==): should not raise error by type
-	  mismatch.
-
-	* lib/rational.rb (Rational#==): ditto.
-
-Thu Feb  6 11:44:40 2003  MoonWolf  <moonwolf@moonwolf.com>
-
-	* re.c (rb_reg_initialize_m): 3rd argument was ignored.
-
-Thu Feb  6 01:09:05 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_count): return 0 for empty string (was
-	  returning nil).
-
-Wed Feb  5 19:41:37 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: dispatch code restructured to make it openable
-	  that has `open' method.
-
-	* lib/open-uri.rb: Location: field may has a relative URI.
-	  pointed out by erik eriksson <ee@opera.com>.
-
-Wed Feb  5 17:11:02 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): no .<digit> float literal anymore.
-
-Tue Feb  4 16:11:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_equal): a == b is true when b is non T_ARRAY
-	  object, if b has "to_ary" and b == a.
-
-	* hash.c (rb_hash_equal): a == b is true when b is non T_HASH
-	  object, if b has "to_hash" and b == a.
-
-	* string.c (rb_str_equal): a == b is true when b is non T_STRING
-	  object, if b has "to_str" and b == a.
-
-Mon Feb  3 23:46:48 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_getline): should not increment lineno at EOF.
-
-Mon Feb  3 16:49:19 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): default Object#=== now calls "=="
-	  internally.
-
-	* re.c (rb_reg_initialize_m): should honor option status of
-	  original regexp.
-
-	* array.c (rb_ary_equal): ary2 should be T_ARRAY (no to_ary
-	  conversion).
-
-	* array.c (rb_ary_eql): ditto.
-
-	* string.c (rb_str_equal): str2 should be T_STRING (no to_str
-	  conversion).
-
-Mon Feb  3 16:32:52 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* re.c (rb_memsearch): a little improvement.
-
-Mon Feb  3 13:18:05 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_memsearch): algorithm body of String#index.
-
-	* error.c (Init_Exception): "to_str" removed.
-
-	* eval.c (eval): should not rely on Exception#to_str
-
-	* eval.c (compile_error): ditto.
-
-	* error.c (err_append): ditto.
-
-Sat Feb  1 23:56:29 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_merge): Hash#merge, non destructive "update".
-	  now there's also Hash#merge! which is an alias to "update".
-
-Fri Jan 31 14:16:59 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_index): search using Karp-Rabin algorithm.
-
-Fri Jan 31 12:45:11 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_obj_classname): new function.
-
-	* string.c (rb_str_dup): should preserve original's class (but not
-	  hidden singleton class).
-
-	* string.c (rb_str_substr): ditto.
-
-	* parse.y: backout EXPR_CMDARG removal.
-
-Fri Jan 31 09:40:07 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb (OptionParser::List::accept): default
-	  pattern must not be nil.
-
-	* lib/optparse.rb (OptionParser::make_switch): NoArgument doesn't
-	  override other styles.
-
-Thu Jan 30 16:46:43 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb (OptionParser::Switch::PlacedArgument): added.
-	  if the next argument doesn't start with '-', use it as the
-	  value.
-
-	* lib/optparse.rb (OptionParser::make_switch): fixed a bug of
-	  pattern.
-
-	* lib/optparse.rb (Array): no need to guard.
-
-Thu Jan 30 08:27:19 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (rb_file_s_expand_path): removed a sludge.
-
-Wed Jan 29 03:24:39 2003  Michal Rokos  <michal@rokos.homeip.net>
-
-	* dir.c (glob_helper): memory leak fixed.
-
-Tue Jan 28 04:45:03 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* instruby.rb (parse_args), ext/extmk.rb (parse_args): Prepend a
-	  hyphen to the first argument of MAKEFLAGS only if appropriate.
-	  Remove wrong comments.
-
-Mon Jan 27 03:30:06 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* error.c (get_syserror): use snprintf() instead of sprintf(). pointed
-	  out by knu.
-
-Mon Jan 27 02:06:38 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* error.c (get_syserror): some Windows' errno have 5 digits. pointed
-	  out by znz.
-
-Sun Jan 26 19:23:10 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* instruby.rb ($mflags.set?): Check $make instead of $nmake, since
-	  there is no such a variable.
-
-	* instruby.rb ($mflags.set?), ext/extmk.rb ($mflags.set?): Return
-	  false if unmatched.
-
-Sun Jan 26 19:08:30 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/shellwords.rb: Embed rdoc style comments.
-
-	* lib/shellwords.rb (shellwords): Use String#lstrip!.
-
-	* lib/shellwords.rb (shellwords): Recognize an object that
-	  responds to to_str() by using String.new().
-
-Sun Jan 26 17:53:04 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* instruby.rb (parse_args), ext/extmk.rb (parse_args): Detect -n
-	  and emulate a dry run.  Use 'make' in case no --make argument is
-	  given.
-
-Sun Jan 26 07:18:42 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* instruby.rb: re-define individual methods verbosely rather than
-	  including FileUtils::Verbose, in order to suppress messages from
-	  FileUtils#cmp.
-
-	* instruby.rb (makedirs): make same directory only once even if
-	  dryrun.
-
-	* lib/fileutils.rb (FileUtils::Verbose, FileUtils::NoWrite):
-	  re-define methods with define_method instead of module_eval.
-
-Sun Jan 26 03:37:18 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* instruby.rb, ext/extmk.rb, Makefile.in, win32/Makefile.sub,
-	  bcc32/Makefile.sub: Replace the complicated MFLAGS/MAKEFLAGS
-	  parser with something plain and comprehensible.  This fixes a
-	  bug where make flags were wrongly reordered and the resulted
-	  command line often did not make sense especially when BSD make
-	  is used with extra arguments given.  Tested with FreeBSD and
-	  Linux by me and mswin32, bccwin32 and mingw by usa.
-
-Fri Jan 24 18:15:33 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: tMINUS should have lower precedence than tPOW.
-
-Fri Jan 24 05:12:55 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-font-lock-syntactic-keywords): deal
-	  with escaped $ and ? at the end of strings.  [ruby-talk:62297]
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords): added defined?.
-
-Thu Jan 23 17:25:04 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): do not warn discarding already undefined
-	  method.
-
-	* lib/rational.rb: undef quo before replacing.
-
-Thu Jan 23 15:49:57 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (arg): missing arguments.
-
-Thu Jan 23 14:56:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rational.rb: modified to support "quo".
-
-	* numeric.c (num_quo): should return most exact quotient value,
-	  i.e. float by default, rational if available.
-
-	* numeric.c (num_div): "div" should return x.divmod(x)[0].
-
-Thu Jan 23 13:24:18 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_arg): was accessing garbage argv value.
-
-Thu Jan 23 06:37:01 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* instruby.rb: should not contain destdir in shebang line.
-
-Wed Jan 22 23:19:57 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (pipe_exec): remove unnecessary SetStdHandle().
-
-Wed Jan 22 20:20:59 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): syntaxify tPOW negative number hack.
-
-	* parse.y (negate_lit): new function to negate literal numeric
-	  values in compile time.
-
-Wed Jan 22 15:36:54 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_match_exec): charset info may be stored in MBC
-	  region when $KCODE != NONE.
-
-Wed Jan 22 14:22:53 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (set_syserr): should preserve duplicated error names.
-
-Tue Jan 21 20:29:31 2003  Michal Rokos  <michal@rokos.homeip.net>
-
-	* mkmf.rb: make possible to add files to clean and distclean targets
-
-Tue Jan 21 18:05:25 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bcc32/Makefile.sub (LIBRUBY_A): link dmyext.
-
-Tue Jan 21 16:59:18 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* instruby.rb: use real interpreter pathname at shebang line.
-	  [ruby-dev:19370]
-
-Tue Jan 21 16:22:32 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): put back old ** behavior for negative number
-	  right operand.
-
-Tue Jan 21 14:46:12 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb: Use Test::Unit.
-
-	* lib/prettyprint.rb: Ditto
-
-	* lib/time.rb: Ditto
-
-	* lib/tsort.rb: Ditto
-
-Tue Jan 21 04:15:50 2003  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb: Use redefined `to_s' as well as `inspect'.
-	  Useless `pretty_print' methods removed.
-	  (PP::ObjectMixin#pretty_print_inspect): new method.
-
-Mon Jan 20 21:48:43 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in (MANTYPE): Detect if the system's nroff(1) groks
-	  mdoc.  Provide a new option --with-mantype={doc|man} in case the
-	  check does not work as expected.
-
-	* Makefile.in (MANTYPE): Define MANTYPE and pass it to
-	  instruby.rb.
-
-	* instruby.rb: Convert mdoc manpages to man for systems which
-	  nroff(1) does not grok mdoc.
-
-Mon Jan 20 21:25:18 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb (self.open): If a block is given, call it with
-	  tempfile as an argument and automatically close the tempfile
-	  when the block terminates.
-
-Mon Jan 20 21:02:50 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* mdoc2man.rb: Properly put nested braces, parentheses and angles.
-
-	* mdoc2man.rb: Add support for .An and .Aq/.Ao/.Ac.
-
-	* mdoc2man.rb: Add support for .Dl.
-
-	* mdoc2man.rb: Make .Pf macro actually work.
-
-	* mdoc2man.rb: Properly handle .Os.
-
-	* mdoc2man.rb: Correctly omit spaces around punctuation
-	  characters.
-
-Mon Jan 20 19:43:41 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* mdoc2man.rb: Make this work as a library.
-
-Mon Jan 20 18:22:40 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_f_require): purge too many goto's.
-
-Mon Jan 20 17:50:05 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* mdoc2man.rb (parse_macro): Understand .Ux.
-
-Mon Jan 20 17:32:56 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* mdoc2man.rb: New file.  A mdoc to man converter ported from
-	  Perl.
-
-Mon Jan 20 15:40:15 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ruby.1: Properly close .Bl with .El.
-
-Mon Jan 20 04:14:17 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (egrep_cpp): use inspect to show options.
-
-	* lib/mkmf.rb (dir_config): prior configured directories to
-	  defaults.
-
-	* lib/mkmf.rb (dir_config): extract first word to determine
-	  make command type.
-
-Mon Jan 20 02:15:53 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/aix_mksym.rb: no longer used.
-
-Mon Jan 20 00:17:16 2003  Matt Armstrong  <matt@lickey.com>
-
-	* file.c (eaccess): under windows, make eaccess() just call
-	  access(). [ruby-core:716], [ruby-bugs:PR#556]
-
-Sun Jan 19 23:08:18 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/shellwords.rb (shellwords): A backslash ('\') in single
-	  quotes should not be regarded as meta character.  This bug or
-	  maybe feature was inherited from Perl's shellwords.pl.
-
-Sun Jan 19 14:01:12 2003  UENO Katsuhiro  <unnie@blue.sky.or.jp>
-
-	* regex.c (is_in_list): should work well with UTF-8.
-
-	* regex.c (re_match_exec): ditto.
-
-Sat Jan 18 14:53:49 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bignum.c (rb_cstr_to_inum): should not erase all 0s, but
-	  squeeze into one.  [ruby-dev:19377]
-
-Fri Jan 17 03:33:42 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* sprintf.c (rb_f_sprintf): Fix a bug caused by an uninitialized
-	  variable v, that a bignum unexpectedly gets converted into a
-	  string with its higher figures all filled with ./f/7/1,
-	  depending on the base.  This bug seems to have been introduced
-	  in rev.1.27.
-
-	* sprintf.c (rb_f_sprintf): Use switch instead of a sequence of
-	  else-if's.
-
-Wed Jan 15 15:18:38 2003  moumar  <moumar@netcourrier.com>
-
-	* configure.in (ARCHFILE): set even unless --enable-shared on
-	  AIX.  [ruby-talk:61466]
-
-	* marshal.c (math.h): should be included after ruby.h on AIX.
-	  [ruby-talk:61366]
-
-Tue Jan 14 21:47:56 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_f_require): do not search adding .rb/.so suffixes if
-	  the suffix specified.  [ruby-dev:18702]
-	  http://moonrock.jp/~don/d/200211.html#d08_t1
-
-Tue Jan 14 18:36:41 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_all): now works without block.
-
-	* enum.c (enum_any): ditto.
-
-Tue Jan 14 01:21:32 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (next_argv): not always set binmode.
-
-Mon Jan 13 20:45:19 2003  Guy Decoux  <ts@moulon.inra.fr>
-
-	* parse.y (list_append): avoid O(n) search using node->nd_next->nd_end.
-
-	* parse.y (list_concat): ditto.
-
-	* eval.c (rb_eval): NODE_ARRY nd_end adoption.
-
-Mon Jan 13 02:22:11 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/dl/lib/dl/win32.rb: eliminate unnecessary "A" adding.
-
-Sun Jan 12 16:07:17 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (next_argv): inherit binmode from $defout.
-
-Sat Jan 11 22:50:47 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/dl/lib/dl/win32.rb: compatibility improvement.
-
-Sat Jan 11 01:44:16 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (RUBY_CHECK_IO_NEED): added more tests.
-
-	* io.c (rb_io_check_readable): seek after synchronized write.
-
-Fri Jan 10 01:23:45 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-font-lock-syntactic-keywords): syntax
-	  classes are not allowed inside character classes.
-	  [ruby-talk:60996]
-
-Thu Jan  9 23:28:01 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in: AC_MSG_FAILURE is a new macro in 2.54b or later.
-
-Thu Jan  9 17:05:24 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (RUBY_CHECK_IO_NEED): check whether fseek() and
-	  fflush() are needed.
-
-	* io.c (flush_before_seek): flush write stream only.
-
-	* io.c (rb_io_check_readable): seek instead of flush if the last
-	  operation was write.
-
-	* io.c (rb_io_check_writable): seek instead of flush if the last
-	  operation was read.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub: needs to seek between
-	  R/W.
-
-Thu Jan  9 16:31:51 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should not discard nested NODE_BLOCK.
-
-Thu Jan  9 15:12:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (stmt): NODE_NOT elimination for if/unless/while/until node.
-
-	* parse.y (primary): ditto.
-
-Thu Jan  9 13:26:18 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* st.h, st.c: Back out the introduction of st_*_func_t.  Some
-	  compilers complain about function type mismatch.
-
-Thu Jan  9 02:10:44 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): reduce recursive rb_eval() call by using sort
-	  of continuation passing style.
-
-Wed Jan  8 17:10:32 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/Win32API/lib/win32/registry.rb: added. [new]
-
-Wed Jan  8 15:54:05 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c: remove ruby_last_node and assignments seems to be
-	  unnecessary
-
-	* intern.h: debug does not run if ID_ALLOCATOR is zero.
-
-Wed Jan  8 15:04:11 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_each): treat fixnums specially to boost.
-
-	* numeric.c (num_step): remove rb_scan_args() for small speedup.
-
-Tue Jan  7 17:56:08 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (svalue_to_avalue): should return converted array.
-
-Tue Jan  7 07:48:01 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_f_local_variables): skip $_, $~ and flip states in
-	  dynamic variables.  [ruby-core:00681]
-
-Tue Jan  7 02:46:29 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (env_clear): new Hash compatible method.
-
-	* hash.c (env_shift, env_invert, env_replace, env_update): ditto.
-
-Mon Jan  6 23:36:29 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* st.h, st.c: Introduce new conventional typedef's, st_data_t,
-	  st_compare_func_t, st_hash_func_t and st_each_func_t.
-
-	* st.h, st.c: Do explicit function declarations and do not rely on
-	  implicit declarations.
-
-	* class.c, eval.c, gc.c, hash.c, marshal.c, parse.y, variable.c:
-	  Add proper casts to avoid warnings.
-
-Mon Jan  6 20:44:43 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* intern.h (rb_check_array_type): Declare rb_check_array_type().
-
-	* ext/digest/md5/md5ossl.c: Include stdio.h for sprintf() and
-	  string.h for memcmp().
-
-	* ext/dl/ptr.c: Include ctype.h for isdigit().
-
-Mon Jan  6 18:43:17 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* file.c: improve DOSISH drive letter support.
-
-Mon Jan  6 18:31:45 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/fileutils.rb (ln): add ' -f' in the verbose message.
-
-	* lib/fileutils.rb (cp_r): add 'p' in the verbose message.
-
-Mon Jan  6 16:44:52 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_join): dispatch based on "to_str".
-
-	* array.c (rb_ary_times, rb_ary_equal): ditto.
-
-Mon Jan  6 13:26:35 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* process.c (proc_exec_v): follow to proc_spawn_v(). call do_aspawn()
-	  on Win32.
-
-	* process.c (rb_proc_exec): call do_spawn() on Win32.
-
-	* win32/win32.c, win32/win32.h (do_spawn, do_aspawn): add mode flag.
-
-	* process.c (proc_spawn_v, rb_f_system): follow above change.
-
-Mon Jan  6 05:11:15 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/extmk.rb: make $0 normal variable.
-
-Mon Jan  6 02:32:46 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* struct.c (make_struct): needs meta class.
-
-Sun Jan  5 22:54:05 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/fileutils.rb (ln): `argv' is not a argument.
-
-Sun Jan  5 17:44:37 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/extmk.rb (extmake): set $0 temporarily while loading
-	  extconf.rb.
-
-Sun Jan  5 14:46:46 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* instruby.rb: need paren in regexp(make -n install).
-
-	* ext/extmk.rb (sysquote): do not need to quote on mswin/bccwin/mingw.
-
-	* ext/extmk.rb ($mflags): uniq items and remove '-' and '--'.
-	  move options to the lead.
-
-	* lib/fileutils.rb (install): model on the real install
-	  command(message).
-
-Sun Jan  5 09:36:46 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ruby.c (ruby_init_loadpath): under Windows, get the module
-	  path from an internal address instead of hard coded library
-	  name.
-
-	* cygwin/GNUmakefile.in, bcc32/Makefile.sub,
-	  win32/Makefile.sub (CPPFLAGS): removed LIBRUBY_SO macro.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub (config.h): no longer
-	  depends on makefiles.
-
-Sun Jan  5 04:17:05 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* gc.c (SET_STACK_END): Issue a FLUSH_REGISTER_WINDOWS here too.
-	  This fixes make test on FreeBSD/sparc64.
-
-Sun Jan  5 03:43:47 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* defines.h (FLUSH_REGISTER_WINDOWS): Make the flushw call an
-	  inline function so it can be used as an expression.
-
-	* eval.c (EXEC_TAG, THREAD_SAVE_CONTEXT): Consistently call
-	  FLUSH_REGISTER_WINDOWS before calling setjmp(). (I suspect that
-	  every setjmp() implementation should take care of register
-	  windows, though)
-
-Sun Jan  5 03:12:32 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* file.c (utimbuf): use utimbuf instead of _utimbuf if defined _WIN32.
-
-	* win32/Makefile.sub (LIBS): use oldnames.lib.
-
-	* win32/win32.c (rb_w32_getcwd): follow above change.
-
-	* win32/win32.h: ditto.
-
-	* wince/direct.c, wince/direct.h (getcwd): ditto.
-
-	* wince/io.h: ditto.
-
-	* wince/string.c, wince/wince.h (stricmp, strnicmp): ditto.
-
-Sat Jan  4 15:18:50 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* process.c (rb_proc_exec): use same logic as DJGPP on win32 ports.
-
-	* process.c (rb_f_system): ditto.
-
-	* win32/win32.c, win32/win32.h (do_aspawn): [new]. for arrayed
-	  arguments.
-
-	* win32/win32.c (CreateChild): add new argument for real filename of
-	  executing process.
-
-	* win32/win32.c (NtHasRedirection, pipe_exec): follow above change.
-
-Sat Jan  4 14:29:52 2003  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* configure.in: set rb_cv_need_io_flush_between_seek=yes.
-
-	* win32/Makefile.sub (config.h): define NEED_IO_FLUSH_BETWEE_SEEK.
-	  (pointed out by moriq [ruby-dev:19299])
-
-Sat Jan  4 03:12:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (umethod_bind): exact class match is not required.  relax
-	  the restriction to subclasses.
-
-Sat Jan  4 01:33:40 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (rb_file_s_lchmod): get rid of gcc-3 -O3 warning.
-
-Fri Jan  3 22:26:07 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* process.c (rb_proc_times): need to initialize first.
-
-Fri Jan  3 01:10:17 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): call "inherited" before executing class body.
-
-	* class.c (rb_define_class): call "inherited" after defining the
-	  constant.
-
-	* class.c (rb_define_class_under): ditto.
-
-Thu Jan  2 19:37:30 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (massign): expand first element if RHS is an array and
-	  its size is 1, and LHS has concrete assignment target (i.e. LHS
-	  has target(s) other than *var).
-
-	* eval.c (massign): avoid unnecessary avalue/svalue conversion.
-
-	* eval.c (rb_yield_0): ditto
-
-	* array.c (rb_ary_update): do not allocate unused array if rpl is
-	  nil (i.e. merely removing elements).
-
-Thu Jan  2 13:55:08 2003  Mathieu Bouchard  <matju@sympatico.ca>
-
-	* io.c (io_read): should resize supplied string if it's shorter
-	  than expected.
-
-Thu Jan  2 11:01:20 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (bmcall): arguments should be an array.
-
-Wed Jan  1 18:18:45 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: better DJGPP support. add GNUmakefile.
-
-	* djgpp/GNUmakefile: new.
-
-Wed Jan  1 04:16:18 2003  Akinori MUSHA  <knu@iDaemons.org>
-
-	* node.h (struct RNode): Change argc from int to long.  Otherwise
-	  NEW_CFUNC() sets argc to a wrong value on platforms where
-	  sizeof(int) != sizeof(long) and the byte order is big-endian.
-	  This fixes breakage on FreeBSD/sparc64.
-
-Tue Dec 31 23:22:50 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (massign): removed awkward conversion between yvalue,
-	  mvalue, etc.
-
-	* eval.c (rb_yield_0): new parameter added to tell whether val is
-	  an array value or not.
-
-	* parse.y (yield_args): restructuring: new nodes: NODE_RESTARY2,
-	  NODE_SVALUE; removed node: NODE_RESTARGS.
-
-Tue Dec 31 21:13:51 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* Makefile.in, {win32,bcc32}/Makefile.sub: add new target:
-	  what-where, no-install.
-
-	* mkconfig.rb: add const: CROSS_COMPILING.
-
-	* ext/extmk.rb: no-install support.  add MAKEDIRS macro.
-
-	* lib/mkmf.rb: add !ifdef .. !endif for Borland make.
-
-	* process.c: improve DJGPP support.  system "ls", "-l".
-
-Tue Dec 31 20:16:37 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/socket/addrinfo.h (NI_MAXHOST): Define NI_MAXHOST and
-	  NI_MAXSERV only if they are not defined yet.  This fixes build
-	  on such platforms as OpenBSD.
-
-Tue Dec 31 20:07:49 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/tcltklib/extconf.rb (find_tcl, find_tk): Look for both
-	  lib{tcl,tk}M.N and lib{tcl,tk}MN on all platforms.  *BSD have
-	  Tcl/Tk libraries named this way.
-
-Tue Dec 31 19:48:21 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in: Improve OpenBSD support. [obtained from: OpenBSD
-	  ports]
-
-	* dln.c (FUNCNAME_PATTERN): Ditto.
-
-Tue Dec 31 19:21:02 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_transpose): Properly declare ary as a VALUE.
-
-	* file.c (rb_file_s_chmod): Do not directly cast an int to void *
-	  to avoid a warning.
-
-	* defines.h (FLUSH_REGISTER_WINDOWS): Add support for
-	  FreeBSD/sparc64.  miniruby still coredumps in a different place,
-	  though.
-
-Tue Dec 31 07:47:15 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (parse_string): readjusted.
-
-	* parse.y (heredoc_identifier): readjusted.
-
-	* parse.y (here_document): make EOL codes of single-quoted
-	  here-documents consistent.
-
-	* parse.y (yylex): reduced unnecessary conditionals.
-
-Tue Dec 31 04:49:51 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ruby.1: mdoc'ify.
-
-Tue Dec 31 01:30:29 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* parse.y (yylex): do not accept " __END__\n".  ([ruby-dev:19245])
-
-Mon Dec 30 21:10:59 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* parse.y (yylex): use strncmp instead of strcmp.
-	  accept "__END__\r\n".  ([ruby-dev:19241])
-
-Mon Dec 30 20:32:14 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_mark_frame): should mark frame->node.
-
-Mon Dec 30 19:10:30 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/extmk.rb: split --make argument contains options, assume
-	  the first word of --make-flags is always options even unless
-	  preceded by -, and ignore letter-case of options if nmake.
-
-	* instruby.rb: extract -n option also from --make and
-	  --make-flags.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub: not prepend - to
-	  $(MFLAGS)
-
-Mon Dec 30 16:44:14 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* string.c (rb_str_substr): should share the shared string if
-	  present, instead of the original string.  (ruby-bugs:PR#528)
-
-Mon Dec 30 05:10:00 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/socket/socket.c (tcp_svr_init): local host to
-	  init_inetsock() is VALUE but not pointer.
-
-	* ext/socket/socket.c (sock_s_unpack_sockaddr_in): get rid of
-	  gcc-3 -O3 warning.
-
-Sun Dec 29 23:45:53 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* gc.c (gc_sweep): adjust GC trigger.
-
-	* dln.c (init_funcname_len): get rid of gcc-3 -O3 warning.
-
-	* eval.c (copy_node_scope): ditto.
-
-	* hash.c (rb_hash_foreach, delete_if_i, select_i, each_value_i,
-	  each_key_i, each_pair_i, envix): ditto.
-
-	* range.c (range_each_func): ditto.
-
-	* file.c (rb_file_s_chmod): ditto.
-
-Sun Dec 29 15:30:37 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_parseargs): should not inherit ftools.rb's
-	  misfeature.
-
-Sun Dec 29 05:08:13 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* lib/fileutils.rb (cmp): return false if file size differs.
-
-Sat Dec 28 19:21:24 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* instruby.rb: remove junk args.
-
-	* lib/mkmf.rb (create_makefile): remove a trouble library
-	  before making a shared library.
-
-	* win32/Makefile.sub: invoke instruby.rb with the --make-flags option.
-
-Sat Dec 28 03:09:58 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#[]): improvement. thanks to Kazuhiro NISHIYAMA
-	  <zn@mbf.nifty.com>
-
-Sat Dec 28 00:34:03 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* {win32,bcc32}/Makefile.sub: remove `=' from --make-flags options.
-	  nmake quotes args if included `=' in args.
-
-	* instruby.rb: use getopts.rb.
-
-	* ext/dbm/extconf.rb (-DDBM_HDR): substitute ' with " to avoid
-	  a error on Win32.
-
-	* ext/gdbm/gdbm.c: add prototypes to avoid VC++ warnings.
-
-Fri Dec 27 21:41:57 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bcc32/setup.mak, win32/setup.mak(-prologue-): move srcdir from
-	  CPP input or UNC path will be removed as a comment.
-
-Fri Dec 27 17:55:00 2002  Takaaki Uematsu  <mail@uema2.cjb.net>
-
-	* wince/config, wince/configure.bat: replace 1.7 with 1.8
-	  in macros.
-
-Fri Dec 27 13:28:14 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* instruby.rb: fileutils.rb accepts only one argument.
-
-Fri Dec 27 13:23:29 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb (fu_parseargs): reject illegal options
-	  correctly.
-
-	* lib/fileutils.rb (uptodate?): parameter declaration was wrong.
-
-	* lib/fileutils.rb: change coding styles.
-
-Fri Dec 27 09:25:22 2002  ABE Shigeru  <shiger-a@nifty.com>
-
-	* process.c (rb_proc_times): avoid WindowsXP crash using volatile
-	  variables.
-
-Fri Dec 27 02:56:58 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* instruby.rb: check only `-' option, and use fileutils instead of
-	  ftools.
-
-Fri Dec 27 02:45:17 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/net/telnet.rb: Telnet#print not add "\n".
-
-	* lib/cgi.rb: cgi['key'] is equal cgi['key'][0]
-
-Thu Dec 26 22:33:18 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb (create_makefile): check only `-' option.
-
-	* configure.in: cleanups for MinGW. remove -D__NO_ISOCEXT in $CFLAGS.
-
-	* win32/win32.h: prototypes for isinf, isnan are not needed on MinGW.
-
-Thu Dec 26 19:22:00 2002  YOSHIDA Kazuhiro <moriq@moriq.com>
-
-	* win32/setup.mak (-prologue-): moved srcdir macro definition.
-	  [ruby-win32:420].
-
-Wed Dec 25 18:26:44 2002  K.Kosako  <kosako@sofnec.co.jp>
-
-	* regex.c (re_match): fixed wrong \G behavior.  (ruby-bugs-ja:PR#377)
-
-Wed Dec 25 16:41:16 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_match_exec): fix odd \G behavior based on the patch
-	  from Nobu.
-
-Wed Dec 25 11:05:11 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bcc32/setup.mak (-generic-): removed garbages.
-
-Wed Dec 25 10:36:20 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub, win32/Makefile.sub (RUBY_SO_NAME, config.h):
-	  use $(MAJOR) and $(MINOR). based on Nobu's patch. [ruby-win32:413]
-
-	* bcc32/setup.mak, win32/setup.mak (-prologue-): define MAJOR, MINOR
-	  and TEENY from version.h. based on Nobu's patch. [ruby-win32:413]
-
-	* win32/Makefile.sub (config.h): add HAVE_FLOAT_H.
-
-	* win32/Makefile.sub (parse.obj): depend on win32/win32.h.
-
-Tue Dec 24 23:49:16 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/irb/completion.rb: Use Object#class rather than Object#type.
-
-Tue Dec 24 23:37:40 2002  TADA Tadashi <sho@spc.gr.jp>
-
-	* lib/cgi.rb (Cookie::parse), lib/cgi-lib.rb (initialize): Do not
-	  pass to split() a bare string longer than 2 characters as
-	  separator.
-
-Tue Dec 24 19:19:24 2002  Tietew <tietew@tietew.net>
-
-	* numeric.c (DBL_MAX_10_EXP): fix typo. [ruby-dev:19175]
-
-Tue Dec 24 17:02:46 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_undefined): use NoMethodError instead of fatal.
-
-Tue Dec 24 02:12:45 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/README: Synchronize with reality.
-
-Tue Dec 24 02:05:51 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* MANIFEST, lib/README, lib/ipaddr.rb: Add ipaddr.rb from rough.
-
-Sun Dec 22 04:07:47 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/dbm/dbm.c (fdbm_alloc): allocator takes only one argument.
-
-Sun Dec 22 02:49:25 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* array.c (ary_alloc), dir.c (dir_s_alloc), eval.c (thgroup_s_alloc),
-	  file.c (rb_stat_s_alloc), hash.c (hash_alloc), io.c (io_alloc),
-	  object.c (rb_module_s_alloc, rb_class_allocate_instance),
-	  re.c (match_alloc, rb_reg_s_alloc), string.c (str_alloc),
-	  time.c (time_s_alloc), ext/digest/digest.c (rb_digest_base_alloc),
-	  ext/tcltklib/tcltklib.c (ip_alloc),
-	  ext/win32ole/win32ole.c (fole_s_allocate, fev_s_allocate)
-	  : add prototype to get rid of VC++ warnings.
-
-	* ext/sdbm/init.c (fsdbm_alloc): allocator takes only one argument.
-
-Sun Dec 22 00:36:43 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): accept pure ruby libraries.
-
-Sat Dec 21 23:59:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (ins_methods_i): should not show ID_ALLOCATOR.
-
-	* class.c (ins_methods_prot_i): ditto.
-
-	* class.c (ins_methods_priv_i): ditto.
-
-	* class.c (ins_methods_pub_i): ditto.
-
-	* eval.c (call_trace_func): ditto.
-
-	* eval.c (rb_undefined): ditto.
-
-Sat Dec 21 07:27:24 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-parse-partial): keywords must not be
-	  preceded by @ or $.
-
-Fri Dec 20 20:29:04 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/curses/curses.c, ext/dbm/dbm.c, ext/digest/digest.c,
-	  ext/dl/handle.c, ext/dl/ptr.c, ext/dl/sym.c, ext/gdbm/gdbm.c,
-	  ext/iconv/iconv.c, ext/sdbm/init.c, ext/stringio/stringio.c,
-	  ext/strscan/strscan.c, ext/tcltklib/tcltklib.c,
-	  ext/win32ole/win32ole.c: use rb_define_alloc_func().
-
-Fri Dec 20 18:29:04 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (rb_io_fwrite): separated from io_write().
-
-	* marshal.c (w_byten): use rb_io_fwrite() to support non-blocking
-	  IO, and added error check.
-
-	* rubyio.h: prototypes; rb_io_fwrite
-
-Fri Dec 20 17:40:59 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): should not remove Class#allocate.
-
-	* lib/profiler.rb: separate profiling functions, without
-	  trace_func and at_exit setting.
-
-Fri Dec 20 16:20:04 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (do_block): split "do" block and tLBRACE_ARG block.
-
-	* parse.y (cmd_brace_block): new tLBRACE_ARG block rule
-
-	* parse.y (command): can take optional cmd_brace_block; use %prec
-	  to resolve shift/reduce conflict. (ruby-bugs-ja PR#372)
-
-	* eval.c (ruby_finalize): trace_func should be cleared here (after
-	  executing exit procs and finalizers).
-
-	* eval.c (rb_define_alloc_func): new allocation framework, based
-	  on Nobu's work [ruby-dev:19116].  "allocate" method is no longer
-	  used for object allocation.
-
-Fri Dec 20 05:06:49 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/README, lib/cgi/ftplib.rb, lib/telnet.rb: Delete ftplib.rb
-	  and telnet.rb.  It has been quite some time sinc they were
-	  obsoleted and made to emit warnings.
-
-Fri Dec 20 04:58:22 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb: Embed Rdoc style comments.
-
-	* lib/tempfile.rb: Add length as an alias for size.
-
-Fri Dec 20 03:57:32 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb: Add Tempfile#close!() as a shorthand for
-	  Tempfile#close(true).
-
-	* lib/tempfile.rb: Add Tempfile#{unlink,delete}().
-
-Fri Dec 20 03:53:01 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/README, lib/cgi/final.rb, lib/cgi/session.rb: Delete
-	  final.rb, which was obsoleted long ago.
-
-Fri Dec 20 00:16:06 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* re.c (rb_reg_match_pre, rb_reg_match_post, match_to_a,
-	  match_select): return instances of same class as the original
-	  string.  [ruby-dev:19119]
-
-Thu Dec 19 22:55:49 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* numeric.c (DBL_EPSILON): fix typo.
-
-Thu Dec 19 22:35:20 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (assign): avoid [BUG] at multiple attribute assignment.
-
-Thu Dec 19 01:00:09 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_step): use DBL_EPSILON.
-
-	* array.c (rb_check_array_type): new function: return an array
-	  (convert if possible), or nil.
-
-	* string.c (rb_check_string_type): new function: return a string
-	  (convert if possible), or nil.
-
-	* numeric.c (rb_dbl_cmp): returns nil if values are not
-	  comparable.
-
-	* numeric.c (fix_cmp,flo_cmp): use rb_num_coerce_cmp()
-
-	* bignum.c (rb_big_cmp): ditto.
-
-	* numeric.c (rb_num_coerce_cmp): new coercing function for "<=>",
-	  which does not raise TypeError.
-
-	* numeric.c (do_coerce): can be suppress exception now.
-
-	* object.c (rb_mod_cmp): should return nil for non class/module
-	  objects.
-
-Thu Dec 19 04:21:10 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/open-uri.rb: add a missing ||. (found by: ruby -wc)
-
-Wed Dec 18 17:53:05 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_eqq): return false if the argument is not a
-	  string.  now returns boolean value.
-
-	* class.c (rb_include_module): argument should be T_MODULE, not
-	  T_class, nor T_ICLASS.
-
-Wed Dec 18 03:52:55 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* string.c (rb_str_new4): handle tail shared string.
-	  (ruby-bugs-ja:PR#370)
-
-	* string.c (rb_str_dup_frozen): ditto.
-
-Tue Dec 17 21:08:29 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* node.h (NODE_ATTRASGN): new node, assignment to attribute.
-	  [ruby-core:00637].
-
-	* eval.c (is_defined, rb_eval): ditto.
-
-	* parse.y (attrset, node_assign): ditto.
-
-	* string.c (rb_str_substr): tail sharing.  [ruby-core:00650]
-
-	* re.c (rb_reg_nth_match): ditto.
-
-Tue Dec 17 16:52:38 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): "defined?" should return "assignment" for
-	  attribute assignment (e.g. a.foo=b) and indexed assignment
-	  (e.g. a[2] = 44).
-
-	* parse.y (aryset): use NODE_ATTRASGN.
-
-Tue Dec 17 04:03:45 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/open-uri.rb: new file.
-
-Tue Dec 17 00:28:19 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* file.c (utimbuf): need to define for VC++.
-
-Mon Dec 16 15:53:20 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (nextc): get rid of overrun.  (pointed out by akr
-	  [ruby-list:36773])
-
-Sun Dec 15 21:16:44 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (init_mkmf): add $(topdir) to $LIBPATH if $extmk.
-	  remove adding $(archdir) to $LIBPATH.
-
-Sat Dec 15 12:15:00 2002  Takaaki Uematsu <mail@uema2.cjb.net>
-
-	* configure.in, defines.h, dir.c, dir.h, dln.c, error.c,
-	  eval.c, file.c, hash.c, io.c, main.c, missing.c,
-	  process.c, ruby.c, rubysig.h, signal.c, st.c, util.c, util.h,
-	  bcc/Makefile.sub, win32/Makefile.sub, win32/win32.h,
-	  ext/Win32API/Win32API.c, ext/socket/getaddrinfo.c,
-	  ext/socket/getnameinfo.c, ext/socket/socket.c,
-	  ext/tcltklib/stubs.c
-	  : replace "NT" with "_WIN32", add DOSISH_DRIVE_LETTER
-	* wince/exe.mak : delete \r at the end of lines.
-	* wince/mswince-ruby17.def : delete rb_obj_become
-
-Sun Dec 15 11:43:26 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (dispose_string): dispose String object.
-
-	* parse.y (heredoc_restore, here_document): fix memory leak.
-
-Sat Dec 14 14:25:00 2002  Takaaki Uematsu <mail@uema2.cjb.net>
-
-	* wince/sys : add stat.c, stat.h, timeb.c, timeb.h,
-		      types.h, utime.c, utime.h
-	* wince/dll.mak : object file name changed.
-	* wince/io.c : add empty dup2().
-	* wince/io.h : add dup2 definition.
-
-Sat Dec 14 01:51:29 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/dbm/extconf.rb (rb_check): support for GNU dbm 1.8.3.
-	  (-with-dbm-type=gdbm_compat). link against -lgdbm_compat
-	  and -lgdbm.
-
-Fri Dec 13 23:42:16 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/dbm/extconf.rb (db_check): check existence of the function
-	  in the specified library before checking it in libc.
-
-Fri Dec 13 17:15:49 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (generic_ivar_get): should always warn uninitialized
-	  instance variables.
-
-Fri Dec 13 12:33:22 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (expr): rescue clause was ignored.
-
-Thu Dec 12 18:19:14 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (RUBY_PROG_GNU_LD): add $CFLAGS, $CPPFLAGS, $LDFLAGS
-	  to the option of $CC.
-
-	* configure.in: set LIBRUBYARG to '-l$(RUBY_SO_NAME)' if the
-	  target os is cygwin and --disable-shared option is supplied.
-
-	* lib/mkmf.rb (init_mkmf): expand config["LIBRUBY"] and
-	  config["LIBRUBY_A"].  don't link $LIBRUBYARG_STATIC if
-	  --disable-shared option is supplied.
-
-	* configure.in (RUBY_CPPOUTFILE): should be a better message.
-
-	* ext/Win32API/extconf.rb: join with a space.
-
-Thu Dec 12 17:27:19 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_hash): define Regexp#hash to make regexps to be
-	  hash keys.
-
-	* re.c (Init_Regexp): define Regexp#eql? (alias to Regexp#==).
-
-Thu Dec 12 16:26:31 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c (r_object0): singleton class instance can't be loaded.
-	  (ruby-bugs-ja:PR#366)
-
-Wed Dec 11 23:35:43 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb (create_makefile): -no-undefined -> --no-undefined.
-
-Wed Dec 11 17:54:59 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_read): takes optional second argument to specify a
-	  string to be written.  the string should not be frozen.
-
-	* io.c (rb_io_sysread): ditto.
-
-Wed Dec 11 11:30:28 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/digest/digest.c (rb_digest_base_copy): renamed "become".
-
-	* ext/stringio/stringio.c (strio_copy): ditto.
-
-Wed Dec 11 00:45:00 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/getoptlong.rb (GetoptLong::Error): provide a common ancestor
-	  for GetoptLong error classes (RCR#129).
-
-Tue Dec 10 17:42:39 2002  K.Kosako  <kosako@sofnec.co.jp>
-
-	* re.c (rb_reg_copy_object): fixed memory leak.
-
-Tue Dec 10 17:30:35 2002  Tanaka Akira  <akr@m17n.org>
-
-	* pack.c (utf8_limits): fix the limit of 4 bytes UTF-8 sequence.
-
-Tue Dec 10 12:01:15 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (mnew): original class of method defined in module should
-	  be the module not intermediate class.  [ruby-dev:19040]
-
-Tue Dec 10 01:16:52 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): preceding ".." for negative numbers
-	  still left;  removed.
-
-	* sprintf.c (rb_f_sprintf): should not prepend '0' if width > prec
-	  for example "%5.3d".
-
-Sat Dec  7 18:14:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (Init_process): add Process.exit and Process.abort
-
-	* pack.c (utf8_to_uv): raise ArgumentError for malformed/redundant
-	  UTF-8 sequences.
-
-Fri Dec  6 03:46:00 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (last_status_set): add pid attribute to Process::Status.
-
-Wed Dec  4 17:31:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (uv_to_utf8): limit maximum length of the encoded string
-	  to 6 bytes, even when the platform supports 8 bytes long integers.
-
-	* pack.c (utf8_to_uv): do not decode sequences longer than 6 bytes.
-
-	* object.c (copy_object): use "copy_object" method, not "become".
-
-Wed Dec  4 16:37:11 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (copy_object): copy finalizers as well if any.
-
-	* gc.c (rb_gc_copy_finalizer): new function to copy finalizers.
-
-Tue Dec  3 01:13:41 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (PP.singleline_pp): new method.
-
-Sun Dec  1 23:04:03 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb (OptionParser::new): same as OptionParser#on but
-	  returns new OptionParser::switch.
-
-Sun Dec  1 22:43:29 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (rb_w32_stat): empty path is invalid, and return
-	  ENOENT rather than EBADF in such case.  [ruby-talk:57177]
-
-Fri Nov 29 18:01:48 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (utf8_to_uv): added checks for malformed or redundant
-	  UTF-8 sequences.
-
-Thu Nov 28 12:08:30 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb: Avoid the use of "clean::" in favor of "clean:" in
-	  order not to let make(1) choke if there is another dependency on
-	  the target added in a depend file.
-
-Thu Nov 28 02:40:42 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb: Make sure to dig the destination directory before
-	  installing a file there.  Formerly "make install" could fail
-	  depending on make(1)'s mood of the moment, especially when -jN
-	  is given.
-
-Wed Nov 27 17:39:38 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/syslog.c: Cut redundancy.
-
-	* ext/syslog/syslog.c: Do not leak ident.
-
-Wed Nov 27 17:25:29 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/syslog.c, ext/syslog/test.rb: Syslog.close should
-	  raise RuntimeError when not opened.
-
-	* ext/syslog/syslog.c, ext/syslog/test.rb:
-	  Syslog.{ident,options,facility,mask} should all return nil when
-	  not opened.
-
-	* ext/syslog/syslog.c, ext/syslog/test.rb: Change back the output
-	  format of inspect().
-
-Wed Nov 27 16:25:43 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/test.rb: Switch from RUnit to Test::Unit.
-
-Wed Nov 27 16:14:12 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/syslog.c: Fix a problem where Syslog.ident was not
-	  marked and could thus be GC'd.
-
-Wed Nov 27 16:11:53 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/test.rb: Switch from RUnit to Test::Unit.
-
-	* ext/syslog/test.rb: The output format of inspect() is slightly
-	  altered.
-
-Wed Nov 27 06:43:26 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* error.c (exit_initialize): add SystemExit#initialize to set
-	  instance variable status.  (ruby-bugs-ja:PR#362)
-	  Now accepts status as optional first argument.
-
-	* eval.c (error_handle): now SystemExit have status always.
-
-	* eval.c (system_exit): just instantiate SystemExit without raise.
-
-	* eval.c (rb_thread_start_0): initialize SystemExit properly.
-
-Tue Nov 26 10:17:04 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dln.c (init_funcname_len): remove MAXPATHLEN dependency.
-
-Mon Nov 25 19:55:38 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): return true if not dynamic and not static.
-
-Mon Nov 25 01:08:40 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dln.c: revert and add the MAXPATHLEN definition on mswin32/mingw32.
-
-Sun Nov 24 20:36:53 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dln.c: move the MAXPATHLEN definition in front.
-
-Fri Nov 22 22:55:01 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): preceding ".." for negative
-	  hexadecimal numbers should not appear if prec (e.g. %.4) is
-	  specified.
-
-	* pack.c (NUM2I32): support platforms which does not have 32bit
-	  integers (e.g. Cray).
-
-Fri Nov 22 19:20:36 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* instruby.rb: Install batch files on Windows. [Submitted by usa]
-
-Fri Nov 22 18:31:46 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_add_method): node may be NULL.
-
-Thu Nov 21 20:53:06 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: changes coding style.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/protocol.rb: ditto.
-
-Thu Nov 21 20:17:08 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: changes coding style.
-
-Thu Nov 21 20:04:06 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: should not overwrite Host: header.
-	  (This patch is contributed by sean@ruby-lang.org)
-
-Thu Nov 21 20:01:33 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: support Proxy-Authorization.
-	  (This patch is contributed by Alexander Bokovoy)
-
-Thu Nov 21 11:03:39 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_find_file_ext): should not terminate searching with
-	  empty path, just ignore.
-
-	* dir.c: remove <sys/parm.h> inclusion.
-
-Wed Nov 20 02:07:12 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compar.c (cmp_eq,cmp_gt,cmp_ge,cmp_lt,cmp_le): check using
-	  rb_cmpint().
-
-	* error.c (init_syserr): remove sys_nerr dependency.
-
-Wed Nov 20 01:52:21 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_cmp): added to satisfy Comparable assumption.
-
-	* eval.c (rb_add_method): "initialize" should be public if it is a
-	  singleton method.
-
-Tue Nov 19 22:37:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_match): avoid dereferencing if size == 0.
-	  (ruby-bugs-ja:PR#360)
-
-Tue Nov 19 20:40:39 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_cmp): should return nil if an operand is not a
-	  number nor time. (ruby-bugs-ja:PR#359)
-
-	* file.c (rb_stat_cmp): should return nil if an operand is not
-	  File::Stat.
-
-Tue Nov 19 14:35:09 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_zip): iterates over items in the receiver.
-	  zipped with nil if argument arrays are shorter.  if arrays are
-	  longer, left items are ignored.  now works with blocks.
-
-	* enum.c (zip_i): changed for new behavior.
-
-	* array.c (rb_ary_transpose): added. [new]
-
-Tue Nov 19 05:12:21 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* instruby.rb: Do not install various working files under bin/.
-
-Tue Nov 19 05:07:39 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* instruby.rb: not rewrite installed scripts when dry-run mode.
-
-	* lib/ostruct.rb (OpenStruct::initialize): should symbolize keys
-	  instead of values.
-
-Tue Nov 19 02:24:10 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* instruby.rb: Rewrite installed scripts' shebang lines.
-
-	* instruby.rb: Use File.join() where appropriate.
-
-Tue Nov 19 01:53:35 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* bin/irb: Moved from sample/irb.rb.
-
-	* instruby.rb: Install script files under bin/ with ruby's program
-	  prefix and suffix.
-
-Mon Nov 18 02:13:36 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb: Make this library thread safe.
-
-	* lib/tempfile.rb: Do not pick a name which was once used and is
-	  still scheduled for removal.
-
-	* lib/tempfile.rb: A lock file need not and must not be scheduled
-	  for removal.
-
-	* lib/tempfile.rb: Compare Max_try with the number of mkdir
-	  failures instead of the suffix counter.
-
-	* lib/tempfile.rb: Overall cleanup and add some important notices.
-
-Sun Nov 17 22:57:31 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (dsym): garbage returned.  (ruby-bugs-ja:PR#358)
-
-Fri Nov 15 07:40:08 2002  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
-
-	* observer.rb: raise NoMethodError instead of NameError.
-	  [ruby-dev:18788]
-
-	* ostruct.rb: ditto.  fix a bug in inspect which called String#+ with
-	  Symbol.  [ruby-dev:18788]
-
-	* profile.rb: illegal use of Array#sort!.  replaced it with non-bang
-	  method.  [ruby-dev:18792]
-
-Thu Nov 14 22:40:29 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (LIBRUBY_A): append -static.  [ruby-dev:18689]
-
-	* configure.in (LIBRUBYARG_STATIC, LIBRUBYARG_SHARED): linker
-	  argument to link static/shared library respectively.
-
-	* Makefile.in (LIBRUBYARG_STATIC, LIBRUBYARG_SHARED): added.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub: ditto.
-
-	* instruby.rb (LIBRUBY_A): install to libdir.
-
-	* lib/mkmf.rb (link_command): link static library of ruby, or
-	  try_run fails unless LIBRUBY_SO is installed.  [ruby-dev:18646]
-
-	* eval.c (call_trace_func): toplevel caller was missing.
-	  [ruby-dev:18754]
-
-	* eval.c (proc_to_s): adjust created line number.
-
-	* parse.y (primary, do_block, brace_block): adjust line number of
-	  block to beginning line, instead of the first statement inside
-	  the block.
-
-Thu Nov 14 08:23:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (math_acos): check errno after operation.  ditto for
-	  asin, acosh, atanh, log, log10 and sqrt.
-
-	* eval.c (rb_add_method): initialize should always be private.
-
-	* parse.y (expr): add rescue modifier rule.
-
-	* parse.y (command_call): return, break and next with argument is
-	  now part of this rule.
-
-Wed Nov 13 16:22:38 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (DLDFLAGS): removed -Wl,-no-undefined to
-	  ext/extmk.rb, in order to allow references to symbols in other
-	  extension libraries for mkmf.rb.  [ruby-dev:18724]
-
-	* ext/extmk.rb (extmake): ditto.
-
-	* ext/extmk.rb (extmake): exit when make failed.
-
-Sun Nov 10 03:46:18 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: retire contain?() and add superset?(),
-	  proper_superset?() subset?(), and proper_subset?().
-	  [obtained from: Jason Voegele's set.rb]
-
-	* lib/set.rb: define several aliases: union() for |(),
-	  difference() for -(), and intersection() for &().
-	  [obtained from: Jason Voegele's set.rb]
-
-	* lib/set.rb: deal with a s/id/object_id/ leftover.
-
-Sat Nov  9 16:06:57 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/tcltklib/stubs.c: should include "util.h" for ruby_strdup.
-
-Sat Nov  9 11:39:45 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c: remove ENABLE_TRACE/DISABLE_TRACE to trace child nodes of
-	  c-call. [ruby-dev:18699]
-
-Fri Nov  8 04:16:55 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): "a" in "a /5" should be considered as a local
-	  variable. [experimental]
-
-Thu Nov  7 09:51:37 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_yield_0): should enable trace for non-cfunc nodes.
-	  [ruby-dev:18645]
-
-	* eval.c (blk_orphan): a block created in a different thread is
-	  orphan.  [ruby-dev:17471]
-
-Wed Nov  6 16:57:06 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_define_method): do not set NOEX_CFUNC if klass is
-	  really a module, whose methods must be safe for receiver's type.
-
-	* eval.c (rb_eval): nosuper should not be inherited unless the
-	  overwritten method is an undef placeholder.
-
-Tue Nov  5 00:46:04 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb: Properly pass the given target to
-	  make(1). [pointed out by eban]
-
-Mon Nov  4 20:03:53 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* instruby.rb, lib/mkmf.rb: use CONFIG["ENABLE_SHARED"] instead of
-	  checking whether CONFIG["configure-args"] includes "--enable-shared".
-
-Mon Nov  4 16:49:14 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): allow 'when'-less case statement; persuaded
-	  by Sean Chittenden.
-
-Mon Nov  4 06:28:09 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* Makefile.in, ext/extmk.rb, bcc32/Makefile.sub,
-	  win32/Makefile.sub: Introduce better command line syntax
-	  (--make/--make-flags/--extstatic) to extmk.rb and instruby.rb.
-	  Previously such command as 'make -j3 install' with pmake doesn't
-	  fail.  Formerly extmk.rb was receiving "make -j 3 -j 3" via the
-	  command line arguments and just ended up recognizing the first
-	  "3" as destdir. [with help of usa]
-
-Mon Nov  4 03:59:51 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/getopts.rb: Do not choke on characters that cannot be used
-	  in a variable name.  Replace them with `_'.  Define a hash named
-	  $OPT for convenience.
-
-Sat Nov  2 00:38:55 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): added Object#object_id, new name for
-	  Object#id. [new]
-
-	* object.c (rb_obj_id_obsolete): give warning for Object#id.
-
-	* numeric.c (fix_intern): added Fixnum#to_sym. [new]
-
-	* object.c (sym_to_sym): rename from Symbol#intern
-
-Fri Nov  1 14:21:06 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_zip): added Enumerable#zip. [new]
-
-	* array.c (rb_ary_zip): added Array#zip.
-
-Thu Oct 31 20:10:18 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (init_syserr): remove sys_nerr dependency.
-
-Thu Oct 31 09:31:51 2002  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (rb_export_method): undef'ed method visibility should not
-	  be changed.
-
-Wed Oct 30 17:00:47 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_public_method_defined, etc.): new methods:
-	  public_method_defined?, private_method_defined?,
-	  protected_method_defined?
-
-	* object.c (rb_obj_public_methods): new method
-	  Object#public_methods.
-
-	* class.c (ins_methods_i): Object#methods should list both public
-	  and protected methods.
-
-	* class.c (rb_class_public_instance_methods): new method
-	  Module#public_instance_methods.
-
-Wed Oct 30 06:29:00 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* eval.c, file.c, gc.c, io.c, object.c, ruby.c, ruby.h, struct.c,
-	  ext/socket/socket.c: differentiate long and int; use proper
-	  printf type specifiers and do casts where appropriate.
-
-Wed Oct 30 04:07:33 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (error_print, rb_longjmp, rb_thread_schedule): flush
-	  error message.  [ruby-dev:18582]
-
-	* eval.c (ruby_cleanup): added.  just clean up without exit.
-	  [ruby-dev:18582]
-
-	* eval.c (ruby_exec): added.  execute main evaluation tree without
-	  exit.  [ruby-dev:18582]
-
-	* intern.h: prototypes; ruby_cleanup, ruby_exec
-
-Tue Oct 29 02:00:08 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/extmk.rb (extmake): use dummy_makefile to create dummy
-	  Makefile.
-
-	* lib/mkmf.rb (find_executable0): EXEEXT is optional.
-
-	* lib/mkmf.rb (dummy_makefile): make dummy Makefile content.
-
-	* lib/mkmf.rb (create_makefile): define EXTLIB replacing -l.
-
-	* lib/mkmf.rb ($bccwin): detect Borland make by help message.
-
-	* lib/mkmf.rb (CLEANINGS): common rules to clean.
-
-Mon Oct 28 01:27:17 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* djgpp/config.sed (@program_transform_name@): use `%', not `,'.
-
-Sun Oct 27 22:59:50 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* ext/extmk.rb(78) : The unnecessary error when installing by bccwin32
-	                     is controlled.
-
-	* lib/mkmf.rb(773) : Also in the case of bccwin32, the path was added.
-
-Sun Oct 27 17:07:25 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* djgpp/*: sync with the latest.
-
-	* ext/extmk.rb, lib/mkmf.rb: flush $stdout.
-
-	* io.c (READ_DATA_PENDING_COUNT, READ_DATA_PENDING_PTR):
-	  undef these macros on DJGPP.
-
-Sat Oct 26 10:11:47 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* node.h (nd_type): cast the value to int.
-
-Sat Oct 26 04:27:35 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/dbm/dbm.c (fdbm_indexes, fdbm_select): add a missing
-	  argument and prevent coredump when a nonexistent key is
-	  specified.
-
-	* ext/sdbm/init.c (fsdbm_indexes, fsdbm_select): ditto.
-
-Sat Oct 26 03:28:43 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* eval.c, gc.c: use a common set of alloca() #ifdef's.  This fixes
-	  the build with Intel C Compiler for Linux.
-
-	* eval.c (rb_f_require): declare old_func with a real type, not
-	  just type modifiers.
-
-Fri Oct 25 02:55:01 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* string.c (rb_str_split_m): RSTRING(str)->ptr might become NULL.
-	  [ruby-dev:18581]
-
-Thu Oct 24 21:57:02 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (LIBPATHFLAG): avoid $ substitution.
-	  [ruby-dev:18577]
-
-	* ext/extmk.rb (extmake): expand $srcdir.
-
-	* ext/win32ole/extconf.rb: should not override $CFLAGS, but
-	  append.
-
-	* lib/mkmf.rb (config_string): use given config hash.
-
-	* bcc32/Makefile.sub (.rc.res): directory part may be empty in
-	  Borland make.
-
-Thu Oct 24 03:38:07 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb (create_makefile): site-install target for backward
-	  compatibility.
-
-	* lib/mkmf.rb (init_mkmf): libdir prior to topdir.
-
-	* configure.in (LIBPATHFLAG): should escape $.  [ruby-dev:18572]
-
-	* mkconfig.rb: never substitute escaped $$.
-
-	* instruby.rb: not install LIBRUBY_SO unless enable-shared.
-	  [ruby-dev:18569]
-
-Wed Oct 23 19:16:06 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): added NODE_DSYM, symbol literal with
-	  interpolation.
-
-	* node.h: ditto.
-
-	* intern.h: prototypes; rb_is_junk_id, rb_str_dump, rb_str_intern
-
-	* object.c (sym_inspect): escape and quote for non-alphanumeric
-	  symbols.
-
-	* parse.y (dsym, tokadd_string, yylex): extended symbol literals.
-
-	* parse.y (rb_is_junk_id): added.
-
-	* string.c (rb_str_dump, rb_str_intern) : make extern.
-
-	* lib/mkmf.rb (create_makefile): deffile should be removed by
-	  distclean, not clean.
-
-Tue Oct 22 23:56:41 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (init_mkmf): add dir_config("opt").
-
-Tue Oct 22 19:44:03 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* bcc32/configure.bat : The command line when calling setup.mak is
-	                        corrected.
-
-	* bcc32/readme.bcc32 : It follows up about the option of configure.bat.
-
-Tue Oct 22 15:23:19 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* instruby.rb: add dryrun mode.
-
-	* ext/extmk.rb (extmake): add install: target to dummy Makefile.
-
-	* ext/extmk.rb (extmake): avoid Borland make's quirk behavior.
-
-	* lib/mkmf.rb (link_command): opt is not a makefile macro.
-
-	* bcc32/Makefile.sub ($(LIBRUBY_SO) $(LIBRUBY)): EXTOBJS were not
-	  linked.
-
-	* bcc32/Makefile.sub (ext/extinit.obj): missing.
-
-	* bcc32/Makefile.sub (TRY_LINK): options have to place before any
-	  non-option arguments.
-
-	* win32/Makefile.sub (TRY_LINK): need -link and -libpath options.
-
-	* bcc32/Makefile.sub, win32/Makefile.sub (RANLIB): logical
-	  operator never work with command.com.
-
-Tue Oct 22 00:59:59 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (RUBY_CPPOUTFILE): fix cache file bug.
-
-	* lib/mkmf.rb (link_command): put 'opt' after conftest.c for
-	  static linking.
-
-Mon Oct 21 22:53:02 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (XCFLAGS): CFLAGS to compile ruby itself.
-
-	* configure.in (LIBEXT): suffix for static libraries.
-
-	* configure.in (LIBPATHFLAG): switch template to specify library
-	  path.
-
-	* configure.in (LINK_SO): command to link shared objects.
-
-	* configure.in (DEFFILE, ARCHFILE): miscellaneous system dependent
-	  files.
-
-	* configure.in (EXPORT_PREFIX): prefix to exported symbols on
-	  Windows.
-
-	* configure.in (COMMON_LIBS, COMMON_MACROS, COMMON_HEADERS):
-	  libraries, macros and headers used in common.
-
-	* configure.in (RUBYW_INSTALL_NAME, rubyw_install_name): GUI mode
-	  executable name.
-
-	* Makefile.in (CFLAGS): append XCFLAGS.
-
-	* Makefile.in (PREP): miscellaneous system dependent files.
-
-	* Makefile.in (ruby.imp, ext/extinit.o): moved from ext/extmk.rb.
-
-	* Makefile.in (fake.rb): CROSS_COMPILING keeps building platform.
-
-	* Makefile.in (MAKEFILES): depend on *.in and config.status.
-
-	* Makefile.in (parse.c): replace "y.tab.c" with actual name for
-	  byacc.
-
-	* ext/extmk.rb, lib/mkmf.rb: integrated.
-
-	* ext/extmk.rb: propagate MFLAGS.
-
-	* ext/extmk.rb (extmake): make dummy Makefile to clean even if no
-	  Makefile is made.
-
-	* lib/mkmf.rb (older): accept multiple file names and Time
-	  objects.
-
-	* lib/mkmf.rb (xsystem): split and quote.
-
-	* lib/mkmf.rb (cpp_include): make include directives.
-
-	* lib/mkmf.rb (try_func): try whether specified function is
-	  available.
-
-	* lib/mkmf.rb (install_files): default to site-install.
-
-	* lib/mkmf.rb (checking_for): added.
-
-	* lib/mkmf.rb (find_executable0): just find executable file with
-	  no message.
-
-	* lib/mkmf.rb (create_header): output header file is variable.
-
-	* lib/mkmf.rb (create_makefile): separate sections.
-
-	* lib/mkmf.rb (init_mkmf): initialize global variables.
-
-	* win32/Makefile.sub, bcc32/Makefile.sub (CPP, AR): added.
-
-	* bcc32/Makefile.sub (ARCH): fixed to i386.
-
-	* win32/Makefile.sub, bcc32/Makefile.sub (miniruby): should not
-	  link EXTOBJS.
-
-	* ext/dl/extconf.rb: use try_cpp to cross compile.
-
-	* ext/dl/extconf.rb: not modify files in source directory.
-
-Fri Oct 18 23:11:21 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (value_expr0): allow return/break/next/redo/retry in rhs
-	  of logical operator.  [ruby-dev:18534]
-
-	* parse.y (remove_begin): eliminate useless NODE_BEGIN.
-	  [ruby-dev:18535]
-
-Fri Oct 18 01:02:44 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c, eval.c: Use (*_NSGetEnviron()) instead of environ on
-	  Darwin for namespace cleanness.  [ruby-core:00537]
-
-	* dln.c (dln_load): Fix Darwin support that has been disabled and
-	  switch to using it on Darwin instead of the system dlopen().
-	  [ruby-core:00541]
-
-Thu Oct 17 19:17:56 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c (w_byten): added; write n bytes from s to arg.
-
-	* marshal.c (dump): flush buffered data.
-
-	* marshal.c (marshal_dump, r_byte, r_bytes0, marshal_load): unify
-	  marshaling I/O.  [ruby-talk:53368]
-
-Thu Oct 17 12:58:24 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: stat.blksize might be 0/nil.
-
-	* lib/fileutils.rb: change coding style.
-
-Wed Oct 16 22:35:53 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* sprintf.c (rb_f_sprintf): disallow mixed usage of numbered and
-	  unnumbered arguments.  [ruby-dev:18531]
-	  get rid of memory leak at exception.  [ruby-core:00460]
-
-Wed Oct 16 13:36:29 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* variable.c (rb_global_entry): not add global entry until
-	  initialized to avoid accessing it while GC.  [ruby-dev:18514]
-
-	* variable.c (rb_alias_variable): ditto.
-
-Wed Oct 16 01:03:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_str_to_dbl): RString ptr might be NULL.
-
-	* object.c (rb_cstr_to_dbl): p pointer might be NULL.
-
-	* bignum.c (rb_str_to_inum): RString ptr might be NULL.
-
-	* bignum.c (rb_cstr_to_inum): str pointer might be NULL.
-
-Sat Oct 12 23:44:11 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (rb_w32_putc): wrong condition to fill or flush on
-	  bccwin32.  [ruby-win32:408]
-
-Fri Oct 11 15:58:06 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): rescue modifier is now an operator with
-	  precedence right below assignments. i.e. "a = b rescue c" now
-	  parsed as "a = (b rescue c)", not as "(a = b) rescue c". [new]
-	  [experimental]
-
-Fri Oct 11 06:05:30 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (rb_w32_fclose, rb_w32_close): use closesocket()
-	  for socket.  [ruby-win32:382]
-
-	* win32/win32.c (StartSockets): set NtSocketsInitialized.
-
-	* win32/win32.h: prototypes; rb_w32_fclose, rb_w32_close
-
-Fri Oct 11 00:24:57 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* gc.c (ruby_xmalloc, ruby_xrealloc): restrict total allocation
-	  size according to memories consumed by live objects.
-	  [ruby-dev:18482]
-
-	* gc.c (gc_sweep): estimate how live objects consume memories.
-
-Thu Oct 10 17:26:12 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/tcltklib/stubs.c (ruby_tcltk_stubs): fix memory leak.
-	  [ruby-dev:18478]
-
-Thu Oct 10 15:20:18 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/weakref.rb (WeakRef::@@final): use Hash#delete.
-
-	* lib/weakref.rb (WeakRef::__getobj__): examine if alive or not by
-	  ID_REV_MAP to deal with recycled object.  [ruby-dev:18472]
-
-	* lib/weakref.rb (WeakRef::weakref_alive?): ditto.
-
-Wed Oct  9 07:11:25 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* gc.c (gc_sweep): also adjust heaps_limits when free unused heap
-	  page.  [ruby-core:00526]
-
-	* io.c (io_fflush): condition to retry can occur.
-
-	* io.c (io_write): returned 0 wrongly if no error occurred.
-
-Tue Oct  8 14:19:07 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (io_write): must check returned value from fwrite() before
-	  test with ferror().  (ruby-bugs-ja:PR#350)
-
-Tue Oct  8 10:55:23 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/prettyprint.rb (PrettyPrint.singleline_format): new method.
-
-Mon Oct  7 16:43:07 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivrem): bignum zero's len should not be 0.
-
-Mon Oct  7 15:36:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivmod): wrong condition check for Bignum zero.
-
-	* bignum.c (Init_Bignum): need to add Bignum#div.
-
-Sun Oct  6 00:49:15 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* eval.c (rb_load): should not pass blocks to the loaded file.
-	  [ruby-dev:18458]
-
-Fri Oct  4 20:25:38 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_interrupt, rb_thread_signal_raise): no need to
-	  save dead thread context. (same as [ruby-dev:18322])
-	  (ruby-bugs-ja:PR#349)
-
-Fri Oct  4 13:05:58 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (RUBY_PROG_GNU_LD): check whether the linker is GNU ld.
-
-	* ext/extmk.rb (create_makefile): add -Wl,-no-undefined to $DLDFLAGS
-	  on Linux if GNU ld is used and --enable-shared is specified.
-
-Fri Oct  4 02:21:16 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_rshift): num should be initialized by carry
-	  bits if x is negative.
-
-	* bignum.c (bigdivmod): len for bignum zero is 1, not 0.
-
-Thu Oct  3 20:22:11 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bcc32/mkexports.rb: to work on cygwin via telnet.
-	  [ruby-win32:358]
-
-	* ext/tcltklib/tcltklib.c (ip_invoke): requires command name
-	  argument.  [ruby-dev:18438]
-
-	* eval.c (ruby_init, ruby_options): Init_stack() with local
-	  location.  (ruby-bugs-ja:PR#277)
-
-	* eval.c (rb_call0): disable trace call.  [ruby-dev:18074]
-
-	* eval.c (eval, rb_load): enable trace call.  [ruby-dev:18074]
-
-	* eval.c (rb_f_require): set source file name for extension
-	  libraries.  [ruby-dev:18445]
-
-	* gc.c (Init_stack): prefer address of argument rather than local
-	  variable to initialize rb_gc_stack_start.
-
-	* ruby.c (translate_char): translate a character in a string;
-	  DOSISH only.  [ruby-dev:18274]
-
-	* ruby.c (ruby_init_loadpath): added argv[0] handling under
-	  Human68K.  [ruby-dev:18274]
-
-	* ruby.c (proc_options): translate directory separator in $0 to
-	  '/'.  [ruby-dev:18274]
-
-Thu Oct  3 00:27:26 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/delegate.rb (Delegator::initialize): use Object#class
-	  instead of deprecated Object#type.
-
-Wed Oct  2 23:32:48 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* configure.in (RUBY_CHECK_IO_NEED_FLUSH): check whether fflush()
-	  is needed.
-
-	* io.c (flush_before_seek): flush before seek if buffered data
-	  may remain.
-
-	* io.c (rb_io_check_readable): flush if the last operation was
-	  write.
-
-	* io.c (rb_io_check_writable): flush if the last operation was
-	  read.
-
-	* rubyio.h (FMODE_RBUF): added.
-
-Wed Oct  2 23:09:20 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (rb_io_wait_readable): handle retryable errors.
-
-	* io.c (rb_io_wait_writable): ditto.
-
-	* ext/socket/socket.c (bsock_send): ditto.
-
-	* ext/socket/socket.c (s_recvfrom): ditto.
-
-	* ext/socket/socket.c (s_accept): ditto.
-
-	* ext/socket/socket.c (udp_send): ditto.
-
-	* ext/socket/getaddrinfo.c (afdl): made private structures constant.
-
-	* rubyio.h: prototype; rb_io_wait_readable(), rb_io_wait_writable().
-
-Wed Oct  2 13:03:58 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: set ac_cv_func_setitimer to "no" on Cygwin.
-
-Wed Oct  2 10:59:29 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_sweep): free unused heap page to reduce process size if
-	  possible.
-
-	* object.c (rb_obj_type): deprecated Object#type; use Object#class.
-
-Tue Oct  1 23:48:32 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/socket/socket.c (init_sock): no need for special finalizer,
-	  socket descriptor is no longer duplicated in 1.7.
-	  [ruby-talk:50732]
-
-	* win32/win32.c, win32/win32.h (rb_w32_fddup, rb_w32_fdclose):
-	  delete.
-
-Mon Sep 30 20:29:10 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (rb_io_inspect): not need to raise IOError for closed
-	  stream.  [ruby-talk:51871]
-
-Mon Sep 30 03:48:15 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_check): need no Fixnum check.
-
-Sun Sep 29 18:30:24 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (rb_w32_open_osfhandle): adjust
-	  rb_w32_open_osfhandle() with _open_osfhandle().
-
-	* win32/win32.c (rb_w32_accept, rb_w32_socket): return -1 on
-	  error.
-
-	* win32/win32.h: should use file descriptor instead of SOCKET.
-
-Sun Sep 29 06:33:03 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (is_socket, 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):
-	  need to protect WSAGetLastError() by RUBY_CRITICAL. [ruby-talk:51778]
-
-Sat Sep 28 20:06:36 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* keywords: add braces around initializers.
-
-Sat Sep 28 13:19:29 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* hash.c (rb_hash_become): should check self-assignment after
-	  conversion.
-
-Sat Sep 28 10:40:44 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_become): Hash#become should check added
-	  self-assignment.
-
-	* class.c (rb_make_metaclass): metaclass of a superclass may be
-	  NULL at boot time.
-
-Sat Sep 28 09:50:03 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* ext/extmk.rb: The condition judgment without necessity was deleted.
-
-Fri Sep 27 18:40:42 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_deadlock): more verbose message at deadlock.
-
-	* eval.c (rb_thread_schedule): ditto.
-
-	* eval.c (rb_thread_join): ditto.
-
-Fri Sep 27 13:24:35 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): Class#inherited should be called after the
-	  execution of the class body.
-
-Fri Sep 27 02:41:53 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha1: Use OpenSSL's SHA1 engine if available.  It is
-	  much faster than what we have now (sha1.[ch]).  Add a knob
-	  (--with-bundled-sha1) to extconf.rb which makes it use the
-	  bundled one anyway.
-
-Fri Sep 27 02:25:14 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/rmd160: Use OpenSSL's RMD160 engine if available.  It
-	  is much faster than what we have now (rmd160.[ch]).  Add a knob
-	  (--with-bundled-rmd160) to extconf.rb which makes it use the
-	  bundled one anyway.
-
-Fri Sep 27 01:23:39 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/md5: Use OpenSSL's MD5 engine if available.  It is
-	  much faster than what we have now (md5.[ch]).  Add a knob
-	  (--with-bundled-md5) to extconf.rb which makes it use the
-	  bundled one anyway.
-
-Thu Sep 26 22:44:21 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_s_digest): Fix a double
-	  free() bug mingled with allocation framework deployment.
-
-	* ext/digest/digest.c (rb_digest_base_s_hexdigest): Get rid of
-	  redundant struct allocation.
-
-Thu Sep 26 09:52:52 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): remove "return outside of method" check at
-	  compile time.
-
-Wed Sep 25 23:51:29 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* dir.c (glob_helper): must not closedir() when exception raised
-	  while globbing "**".
-
-	* marshal.c (w_uclass): unused variable.
-
-	* re.c (match_clone): unused.
-
-	* regex.c (re_compile_pattern): get rid of implicit promotion from
-	  plain char to int.
-
-Wed Sep 25 17:46:46 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (libpathflag): restore ENV['LIB'] when some error
-	  occurred.
-
-Wed Sep 25 16:14:51 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_match): p1 may exceed pend limit.
-
-Mon Sep 23 23:22:43 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_call0): must not clear ruby_current_node, or
-	  backtrace cannot be generated.
-
-	* intern.h (ruby_yyparse): rather than yyparse().
-
-	* parse.y (yylex): nextc() returns -1 at end of input, not 0.
-
-	* parse.y (newline_node): reduce duplicated newline node.
-
-	* parse.y (literal_concat): get rid of warning.
-
-	* parse.y (new_evstr): fixed junk code.
-
-Mon Sep 23 19:57:52 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (RUBY_MINGW32): new macro. check for the MinGW
-	  compiler environment.
-
-	* lib/mkmf.rb: refactoring.
-
-Mon Sep 23 08:27:11 2002  Tanaka Akira  <akr@m17n.org>
-
-	* io.c (appendline): forget to terminate with nul.
-
-Mon Sep 23 02:46:29 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_run): should set toplevel visibility again here.
-
-	* eval.c (rb_eval): should not rely on ruby_class == rb_cObject
-	  check.   Besides allow implicit publicity for attribute set
-	  methods.
-
-	* parse.y (primary): need not to check class_nest, just set
-	  whether method is an attrset or not.
-
-Sun Sep 22 21:49:42 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (call_trace_func): should not call trace function while
-	  compilation.
-
-	* eval.c (rb_call0): also inside c-func.
-
-	* parse.y (yycompile): ditto.
-
-	* ruby.c (require_libraries): preserve source file/line for each
-	  require.
-
-Sun Sep 22 17:08:11 2002  Tanaka Akira  <akr@m17n.org>
-
-	* string.c (rb_str_each_line): p might be at the top of the
-	  string.
-
-Sat Sep 21 23:28:28 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_make_metaclass): class of metaclass should be
-	  metaclass of superclass, unless class itself is a metaclass;
-	  class of metaclass of metaclass should point back to self.
-	  eh, confusing, isn't it.
-
-	* class.c (rb_singleton_class): check if its class is singleton
-	  AND attached to self.
-
-Sat Sep 21 22:23:41 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_raise): no need to save dead thread context.
-	  [ruby-dev:18322]
-
-Fri Sep 20 23:02:01 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (block_append): eliminate unused literal nodes.
-
-	* parse.y (literal_concat): refined literal concatenation.
-
-Fri Sep 20 19:43:40 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: Merge rough/lib/set.rb rev.1.5-1.15.
-
-Wed Sep 18 12:41:16 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should define class/module under ruby_cbase.
-
-	* eval.c (rb_eval): should set class/module path based on
-	  ruby_cbase, not ruby_class.
-
-	* eval.c (module_setup): use ruby_cbase instead of ruby_class.
-
-Tue Sep 17 21:06:04 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_die): put thread dead state.
-
-	* eval.c (rb_thread_atfork): free stack buffer at fork too.
-
-Tue Sep 17 01:13:31 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_nesting): load wrapping module should appear in
-	  Module#nesting list. (ruby-bugs-ja:PR#328)
-
-	* eval.c (rb_thread_remove): free stack buffer on remove.
-
-Tue Sep 17 00:58:35 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* io.c: add parameter prototype.
-
-	* re.c: ditto.
-
-Sun Sep 15 21:14:22 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* win32/win32.c (rb_w32_opendir, rb_w32_stat): Corresponds to
-	  the unjust path containing ".
-
-Sun Sep 15 19:48:55 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (OUTFLAG, CPPOUTFILE): moved from lib/mkmf.rb.
-	  check whether ${CPP} accepts the -o option.
-
-	* win32/Makefile.sub (OUTFLAG, CPPOUTFILE): ditto.
-
-	* bcc32/Makefile.sub (OUTFLAG, CPPOUTFILE): ditto.
-
-	* djgpp/config.sed (OUTFLAG, CPPOUTFILE): ditto.
-
-	* lib/mkmf.rb (OUTFLAG, CPPOUTFILE): use CONFIG.
-	  make easy to understand log.
-
-	* mkconfig.rb (val): should not strip.
-
-Sat Sep 14 20:13:42 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* error.c(rb_sys_fail): remove case EPIPE on bcc32 .
-
-Fri Sep 13 23:39:49 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* dir.c (glob_func_caller): add prototype to get rid of warning.
-
-Fri Sep 13 18:35:12 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): avoid uninitialized global/class variable
-	  warnings at `||='.  [ruby-dev:18278]
-
-	* parse.y (stmt, arg): ditto
-
-Fri Sep 13 13:28:04 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb ($INSTALLFILES): avoid warning when $VERBOSE mode.
-
-Thu Sep 12 23:20:10 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* bcc32/setup.mak    : Control of a message.
-
-	* bcc32/makefile.sub : include resource.
-
-Thu Sep 12 18:10:03 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* dir.c (glob_helper): fixed freeing buffer.  (ruby-bugs-ja:PR#332)
-
-	* dir.c (glob_helper): should pass matched path.  (ruby-bugs-ja:PR#333)
-
-Thu Sep 12 00:09:32 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_trap_eval): preserve thread status and so on.
-	  [ruby-talk:40337], [ruby-core:00019]
-
-Wed Sep 11 21:25:52 2002  Tanaka Akira  <akr@m17n.org>
-
-	* pp.rb (ARGF.pretty_print): implemented.
-	  (PP.pp): arguments reordered.
-
-Wed Sep 11 18:55:38 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (proc_to_s): refined format.  [ruby-dev:18215]
-
-Wed Sep 11 17:47:17 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c, win32/win32.h (rb_w32_getpid): negate pid under Win9x.
-	  [ruby-dev:18262]
-
-Wed Sep 11 12:58:57 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* string.c (get_pat): Add an extra argument "quote".
-
-	* string.c (rb_str_match_m): Do not bother to convert if a regexp
-	  is given.
-
-Wed Sep 11 11:33:40 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub: remove unnecessary `.dll' from filename of
-	  dll's resource file.
-
-	* cygwin/GNUmakefile.in: ditto. [ruby-dev:17103]
-
-	* win32/Makefile.sub: ditto. [ruby-dev:17103]
-
-	* win32/resource.rb: ditto. [ruby-dev:17103]
-
-Wed Sep 11 09:59:46 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (rb_io_wait_readable): added.
-
-	* io.c (rb_io_wait_writable): added.
-
-	* io.c (io_read_retryable): added.
-
-	* io.c (io_write): retry on EINTR, ERESTART and EWOULDBLOCK.
-	  [ruby-dev:17855], [ruby-dev:17878], [ruby-core:00444]
-
-	* io.c (rb_io_fread): ditto.
-
-	* io.c (read_all): ditto.
-
-	* io.c (appendline): ditto.
-
-	* io.c (rb_io_each_byte): ditto.
-
-	* io.c (rb_io_getc): ditto.
-
-Wed Sep 11 09:29:24 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (ext): make directory `ext' on compile dir.
-	  [ruby-dev:18255]
-
-Wed Sep 11 00:41:10 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_mod_define_method): initialize orig_func too.
-	  (ruby-bugs-ja:PR#330)
-
-Wed Sep 11 00:01:32 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (glob_helper): prevent memory leak using rb_protect().
-
-	* string.c (rb_str_associate): no need to check freeze flag.
-
-	* string.c (rb_str_resize): should honor STR_ASSOC flag on
-	  resize.
-
-	* string.c (rb_str_resize): proper STR_ASSOC handling.  pointed
-	  out by Michal Rokos.
-
-	* string.c (rb_str_buf_cat): ditto.
-
-	* string.c (rb_str_cat): ditto.
-
-	* string.c (rb_str_buf_append): ditto.
-
-	* string.c (rb_str_append): ditto.
-
-Tue Sep 10 23:35:46 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (nextc): restore line number after here documents.
-	  (ruby-bugs-ja:PR#331)
-
-	* parse.y (heredoc_restore): ditto.
-
-Tue Sep 10 18:26:52 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb, lib/mkmf.rb ($INCFLAGS): new var for -I$(topdir).
-
-	* lib/mkmf.rb: add #define WIN32_LEAN_AND_MEAN to improve compile
-	  times.
-
-Tue Sep 10 17:16:14 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (miniruby): shouldn't link $(EXTOBJS).
-	  [ruby-dev:17059]
-
-	* win32/Makefile.sub ($(LIBRUBY_A), $(LIBRUBY)): avoid lib.exe's
-	  warning. [ruby-dev:17059]
-
-	* win32/Makefile.sub: remove unnecessary rules. [ruby-dev:17059]
-
-	* win32/configure.bat, win32/setup.mak, win32/README.win32: enable to
-	  pass some arguments to configure. [ruby-dev:17059]
-
-Mon Sep  9 23:43:33 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.h (S_I?USR): define only if not mingw32.
-
-Mon Sep  9 11:21:04 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/stringio/stringio.c (strio_set_string): reinitialize
-	  properly.
-
-	* ext/stringio/stringio.c (strio_become): added self-assign check
-	  and experimental auto-conversion to StringIO.
-
-	* ext/stringio/stringio.c (strio_reopen): added.
-
-
-Sun Sep  8 21:29:25 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* time.c (time_free): prototype; struct time_object -> void *.
-	  avoid GCC warnings.
-
-	* lib/mkmf.rb, ext/extmk.rb ($LINK, $CPP): move to lib/mkmf.rb.
-
-Sun Sep  8 19:02:28 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* time.c: prototype; time_free() to avoid VC++ warnings.
-
-	* ext/tcltklib/tcltklib.c: prototype; invoke_queue_handler() to avoid
-	  VC++ warning.
-
-	* win32/win32.c (rb_w32_stat): remove S_IWGRP and S_IWOTH bits from
-	  st_mode.
-
-	* win32/win32.h (S_I*): define if not defined.
-
-Sun Sep  8 14:38:31 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: modify program_prefix only if specified
-	  --program-prefix.
-
-	* configure.in: don't generate ext/extmk.rb.
-
-	* Makefile.in: execute directly $(srcdir)/ext/extmk.rb.
-	  remove -Cext option, "Dir::chdir 'ext'" in ext/extmk.rb.
-
-	* {win32,bccwin32}/Makefile.sub: ditto.
-
-	* instruby.rb: ditto.
-
-	* ext/extmk.rb: renamed from ext/extmk.rb.in.
-
-	* lib/mkmf.rb (module Logging): create log files (mkmf.log)
-	  in each extension module directories.
-
-	* ext/extmk.rb: ditto.
-
-	* lib/mkmf.rb (macro_defined?): new method.
-
-	* ext/.cvsignore: remove extmk.rb.
-
-	* ext/*/.cvsignore: add "*.def".
-
-	* lib/mkmf.rb (have_struct_member): moved from ext/socket/extconf.rb.
-
-	* ext/socket/extconf.rb: use macro_defined? instead of egrep_cpp.
-
-	* ext/etc/extconf.rb: use have_struct_member.
-
-	* ext/etc/etc.c: add prefix HAVE_ST_ to PW_ macros.
-
-Sun Sep  8 14:36:40 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* bcc32/configure.bat : Control of a message.
-	* bcc32/makefile.sub  : @(sitearch) typo.
-	* ext/extmk.rb.in     : [bccwin32] libdir is added to a library path.
-	* lib/mkmf.rb         : ditto.
-
-Sat Sep  7 23:32:56 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/inf-ruby.el (inferior-ruby-error-regexp-alist): regexp
-	  alist for error message from ruby.
-
-	* misc/inf-ruby.el (inferior-ruby-mode): fixed for Emacs.
-
-	* misc/inf-ruby.el (ruby-send-region): compilation-parse-errors
-	  doesn't parse first line, so insert separators before each
-	  evaluations.
-
-Sat Sep  7 19:46:57 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: Disallow Set.new(false).  Add even more tests.
-	  [Submitted by: "Christoph" <chr_news@gmx.net>]
-
-Sat Sep  7 19:23:56 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: Fix a bug in flatten()'s recursive set detection.
-	  [Submitted by: "Christoph" <chr_news@gmx.net>]  Some tests
-	  against the bug are added.
-
-	* lib/set.rb: Resurrect the test suite by putting it after
-	  __END__ and executing `eval DATA.read'.
-
-Sat Sep  7 08:41:39 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (rb_gc_mark_parser): ruby_eval_tree is marked in eval.c.
-
-Fri Sep  6 20:01:38 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/mkmf.rb ($CC): command to compile C source.
-
-	* lib/mkmf.rb (logging): added.
-
-	* lib/mkmf.rb (try_compile): added.
-
-	* lib/mkmf.rb (egrep_cpp): use internal grep when pattern is
-	  Regexp, otherwise use external egrep command but get rid of
-	  pipe of command.com.
-
-	* lib/mkmf.rb (have_func): local variable should be volatile not
-	  to be eliminated by optimization.
-
-	* lib/mkmf.rb (create_makefile): link with CONFIG["LIBS"].
-
-	* lib/mkmf.rb (create_makefile): emit .SUFFIXES:.
-
-Fri Sep  6 12:11:22 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (rb_gc_mark_parser): should mark ALL global variables
-	  defined in parse.y.
-
-Fri Sep  6 01:15:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (ruby_xmalloc): remove MALLOC_LIMIT to avoid frequent
-	  garbage collection.
-
-Fri Sep  6 11:47:37 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (rb_gc_mark_parser): should mark global variables
-	  defined in parse.y.
-
-Fri Sep  6 10:34:32 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* io.c (rb_io_puts): RSTRING(line)->ptr might be NULL.
-
-Fri Sep  6 10:26:37 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y: should not put non-NODE-VALUEs in the semantic stack.
-
-Fri Sep  6 05:48:26 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* file.c (rb_path_check): nothing to check under DOSISH.
-	  [ruby-list:35772]
-
-Fri Sep  6 05:03:50 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* gc.c (rb_gc): should mark parser.
-
-	* parse.y (rb_gc_mark_parser): new function.
-
-	* intern.h (rb_gc_mark_parser): added.
-
-Thu Sep  5 18:32:32 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_path2class): should not use rb_eval_string().
-
-Thu Sep  5 17:18:22 2002  Michal Rokos  <michal@ruby-lang.org>
-
-	* dln.c: fix memory leak in dln_load (ruby-core:405) and
-	  in load_1 (ruby-core:407)
-
-Thu Sep  5 15:43:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_extended): should allow marshaling of object which
-	  is extended by named module.
-
-	* class.c (rb_make_metaclass): super may be T_ICLASS, need to skip.
-
-Thu Sep  5 13:09:22 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): overriding false constant with class/module
-	  definition should be error.  (PR#327)
-
-Thu Sep  5 01:24:26 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* extmk.rb (create_makefile): add macro MAKEDIRS, INSTALL_PROG,
-	  INSTALL_DATA.
-
-	* extmk.rb (create_makefile): support for building to any directory.
-
-	* extmk.rb (xsystem): move to mkmf.rb.
-
-	* mkmf.rb (xsystem): support for extmk.rb
-
-	* mkmf.rb ($CPP): remove '-E' option.  add CPPFLAGS.
-
-Wed Sep  4 16:15:17 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: ==(o) should be aware of all the Set variant
-	  instances, not just those of its subclasses. [Submitted by:
-	  "Christoph" <chr_news@gmx.net>]
-
-	* lib/set.rb: - Fix eql?(). [ditto]
-
-Wed Sep  4 15:23:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_make_metaclass): obj.meta.super.meta should be equal
-	  to obj.meta.meta.super (ruby-bugs-ja:PR#324).
-
-Wed Sep  4 05:10:16 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* parse.y (yylex): the warning message "invalid
-	  character syntax" was never issued (ruby-bugs-ja:PR#323).
-
-Wed Sep  4 01:08:45 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_bytes): do not use alloca (ruby-bugs:PR#382).
-
-Tue Sep  3 17:12:59 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* extmk.rb: require mkmf.rb.  remove duplicate methods.
-	  use Config::CONFIG["FOO"] instead of @FOO@.
-
-	* mkmf.rb: support for extmk.rb.
-
-Mon Sep  2 23:01:50 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* re.c (rb_reg_search): MatchData must be rb_cMatch.
-	  (ruby-bugs-ja:PR#319)
-
-Mon Sep  2 21:21:46 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* gc.c (gc_sweep): does reclaim nodes in also compile time, if we
-	  can.
-
-	* ruby.c (load_file): omit GC if we can.
-
-	* parse.y (ruby_parser_stack_on_heap): new function.
-
-	* intern.h (ruby_parser_stack_on_heap): added.
-
-Mon Sep  2 18:45:07 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_copy_generic_ivar): remove old generic instance
-	  variable table if it exists.
-
-Sun Sep  1 15:54:33 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* config.guess: fixed for Linux/PPC.
-
-Sat Aug 31 09:38:12 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_make_metaclass): metaclass of a metaclass is a
-	  metaclass itself.
-
-Fri Aug 30 22:45:16 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb: Added.
-
-Fri Aug 30 20:58:54 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* ext/Win32API/Win32API.c (Win32API_Call): typo.
-
-Fri Aug 30 19:45:52 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* variable.c (rb_const_assign): st_delete() takes pointer to key.
-
-Fri Aug 30 19:40:28 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/Win32API/Win32API.c (Win32API_Call): RSTRING()->ptr may be
-	  NULL.
-
-	* ext/nkf/nkf.c (rb_nkf_guess): ditto.
-
-	* ext/readline/readline.c (readline_s_set_completion_append_character):
-	  ditto.
-
-	* ext/socket/socket.c (sock_s_getaddrinfo, sock_s_getnameinfo):
-	  ditto.
-
-	* ext/tcltklib/tcltklib.c (ip_toUTF8, ip_fromUTF8): ditto.
-
-Fri Aug 30 01:32:17 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_singleton_class): superclass of a metaclass
-	  should be a metaclass of superclass.
-
-	* range.c (range_eq): two instances must belong to a same class to
-	  be equal.
-
-	* range.c (range_eql): ditto.
-
-	* io.c (rb_io_taint_check): frozen check added.
-
-	* file.c (rb_stat_become): frozen check added.
-
-	* object.c (rb_obj_become): ditto.
-
-	* re.c (rb_reg_become): ditto.
-
-	* struct.c (rb_struct_become): ditto.
-
-	* time.c (time_become): ditto.
-
-	* array.c (rb_ary_become): should call rb_ary_modify().
-
-	* hash.c (rb_hash_become): should call rb_hash_modify().
-
-	* compar.c (cmp_equal): should not use NUM2LONG(), since <=> may
-	  return bignum.
-
-	* compar.c (cmp_gt, cmp_ge, cmp_lt, cmp_le, cmp_between): ditto.
-
-Thu Aug 29 23:34:42 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* bcc32/MakeFile.sub (sitearch): add.
-
-Thu Aug 29 13:36:42 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (read_all): should use off_t instead of long.
-
-Thu Aug 29 00:55:55 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* marshal.c (r_object): yield loaded objects, not intermediates.
-	  (ruby-bugs-ja:PR#296)
-
-Thu Aug 29 00:06:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_become): should not free ptr if it's shared.
-
-	* eval.c (rb_alias): prohibit making an alias named "allocate" if
-	  klass is a metaclass.
-
-Wed Aug 28 23:59:15 2002  Michal Rokos  <michal@ruby-lang.org>
-
-	* signal.c: remove #ifdef SIGINT for struct signals.
-
-	* variable.c: get rid of fix length buffer in rb_class_path.
-
-Wed Aug 28 23:34:32 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (appendline): data was lost when raw mode.
-
-Wed Aug 28 22:57:34 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_string_value_ptr): StringValuePtr() should never
-	  return NULL pointer.
-
-Wed Aug 28 19:12:46 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/stringio/stringio.c (strio_initialize): RSTRING(mode)->ptr
-	  can be NULL.
-
-	* ext/stringio/stringio.c (strio_ungetc): fix buffer overflow.
-
-Wed Aug 28 18:19:55 2002  Michal Rokos  <michal@ruby-lang.org>
-
-	* file.c: fix memory leak in rb_stat_init.
-
-Wed Aug 28 17:45:03 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/win32.c (kill): negate pid under Win9x.
-
-Wed Aug 28 16:36:40 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (ar): don't check ar twice.
-
-Wed Aug 28 15:00:29 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_delete_bang): should check if str->ptr is 0.
-
-	* string.c (rb_str_squeeze_bang): ditto.
-
-	* string.c (rb_str_count): ditto.
-
-	* string.c (rb_str_lstrip_bang): ditto.
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-	* string.c (rb_str_intern): ditto.
-
-Wed Aug 28 11:37:35 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.h: define SIGINT and SIGKILL if not defined.
-
-	* win32/win32.c: remove definition of SIGINT and SIGKILL.
-
-Tue Aug 27 19:50:27 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ruby.c (require_libraries): prevent ruby_sourcefile from GC.
-
-Tue Aug 27 15:03:35 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_find_file): $LOAD_PATH must not be empty.
-
-	* file.c (rb_find_file_ext): ditto.
-
-Tue Aug 27 02:35:21 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_eq): class check should be based on range.class,
-	  instead of Range to work with Range.dup.
-
-	* range.c (range_eql): ditto.
-
-Mon Aug 26 18:17:56 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_mod_dup): need to preserve metaclass and flags.
-
-Mon Aug 26 10:44:18 2002  Tanaka Akira  <akr@m17n.org>
-
-	* object.c (rb_cstr_to_dbl): had a buffer overrun.
-
-Sun Aug 25 20:10:32 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#form): fix ruby-bugs-ja:PR#280, add default action.
-
-Sat Aug 24 15:32:16 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (call_trace_func): restore source file/line, as trace
-	  function installed in required library with -r option can be
-	  called while parsing.  (ruby-bugs:PR#372)
-
-	* eval.c (module_setup): unused variable.  [ruby-core:00358]
-
-Sat Aug 24 14:59:02 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_class): integrate singleton check into a function
-	  to follow DRY principle.
-
-	* marshal.c (w_uclass): should check singleton method.
-
-	* object.c (rb_obj_dup): dmark and dfree functions must be match
-	  for T_DATA type.
-
-	* object.c (rb_obj_dup): class of the duped object must be match
-	  to the class of the original.
-
-Sat Aug 24 13:57:28 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb (Time.rfc2822, Time#rfc2822): preserve localtimeness.
-
-	* lib/pp.rb: pretty_print_cycled is renamed to pretty_print_cycle.
-
-Fri Aug 23 23:59:57 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (method_call): check receiver is defined.
-
-	* eval.c (umethod_call): removed.
-
-Fri Aug 23 23:39:17 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_quote): do not escape \t, \f, \r, \n, for they are
-	  not regular expression metacharacters.
-
-	* time.c (time_s_alloc): use time_free instead of free (null check,
-	  also serves for type mark).
-
-	* time.c (time_s_at): check dfree function too.
-
-Fri Aug 23 17:06:48 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: RUBY_SO_NAME is msvcrt-rubyXX on mswin32/mingw32.
-
-	* configure.in (sitearch): new var.
-
-	* mkconfig.rb, lib/mkmf.rb (sitearch): ditto.
-
-	* win32/Makefile.sub, win32/setup.mak (sitearch): ditto.
-
-	* instruby.rb: ditto.
-
-Wed Aug 21 16:53:00 2002  Michal Rokos  <michal@ruby-lang.org>
-
-	* *.c: int, long types cleanup.
-
-	* parse.y: ditto.
-
-	* re.h, regex.h, ruby.h: ditto.
-
-Wed Aug 21 16:43:19 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_cleanup): should not modify the global
-	  variable curr_thread.
-
-Wed Aug 21 16:14:26 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: set ac_cv_func__setjmp to "no" on Cygwin.
-
-	* configure.in: set ac_cv_func_crypt to "no" on MinGW.
-
-Tue Aug 20 21:47 2002  KONISHI Hiromasa  <konishih@fd6.so-net.ne.jp>
-
-	* io.c          (rb_io_fread): remove case EPIPE on bcc32 .
-
-	* win32/win32.c (rb_w32_getc): clear EPIPE error on bcc32.
-
-Tue Aug 20 19:39:03 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* file.c (rb_file_s_expand_path): accept drive letter on Cygwin.
-
-	* file.c (is_absolute_path): ditto.
-
-Tue Aug 20 12:12:25 2002  Tietew <tietew@tietew.net>
-
-	* io.c (rb_io_putc): output via rb_io_write().
-
-Mon Aug 19 19:01:55 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/inf-ruby.el (inf-ruby-keys): ruby-send-definition
-	  conflicted with ruby-insert-end.
-
-	* misc/inf-ruby.el (inferior-ruby-mode): compilation-minor-mode.
-
-	* misc/inf-ruby.el (ruby-send-region): send as here document to
-	  adjust source file/line.  [ruby-talk:47113], [ruby-dev:17965]
-
-	* misc/inf-ruby.el (ruby-send-terminator): added to make unique
-	  terminator.
-
-Mon Aug 19 17:08:19 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): frozen check should be moved here
-	  from rb_reg_initialize().
-
-Mon Aug 19 15:38:44 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (sort_2): comparison should be done as signed long.
-
-	* array.c (sort_2): should return int, not VALUE.
-
-Mon Aug 19 12:38:33 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_save_context, rb_thread_restore_context):
-	  save/restore SEH chain on MS-Windows at thread switch.
-	  [ruby-win32:273]
-
-	* eval.c (win32_get_exception_list, win32_set_exception_list):
-	  added.
-
-Sat Aug 17 23:01:25 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (sort_2): *a - *b may overflow.
-
-Sat Aug 17 00:25:08 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_new): len*sizeof(VALUE) may be a positive value.
-
-	* array.c (rb_ary_initialize): ditto.
-
-Fri Aug 16 15:58:16 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (NOFILE): define NOFILE as 64 if not defined.
-
-	* signal.c (sighandler_t): rename to sh_t on dietlibc.
-
-Fri Aug 16 15:37:04 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bignum.c (rb_cstr_to_inum): new decimal and octal string.
-
-Fri Aug 16 13:17:11 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_class_allocate_instance): move singleton class
-	  check from rb_obj_alloc().
-
-Fri Aug 16 11:47:24 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (rb_io_fread): renamed from io_fread and made extern.
-
-	* marshal.c (r_bytes0): check if successfully read, use
-	  rb_io_fread() instead of fread() to be preemptive.
-	  (ruby-bugs-ja:PR#294, 295)
-
-	* rubyio.h (rb_io_fread): added.
-
-Fri Aug 16 07:57:26 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (compile_error): must not clear ruby_sourcefile here.
-	  (ruby-bugs:PR#364).
-
-	* eval.c (rb_longjmp): set ruby_sourcefile before making
-	  backtrace.
-
-Thu Aug 15 20:38:58 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (ruby_current_node) : added to set sourceline on demand.
-
-	* eval.c (error_pos, error_print, rb_longjmp, assign): set source
-	  file/line.
-
-	* eval.c (rb_eval): store current node instead of file/line, and
-	  preserve it at return.
-
-	* eval.c (module_setup): ditto.
-
-	* eval.c (struct thread): store node instead of file/line.
-
-	* eval.c (rb_thread_raise): ditto.
-
-	* intern.h (ruby_current_node): added.
-
-	* intern.h (ruby_set_current_source): added.
-
-	* parse.y (stmt, arg): not fix position of assignment.
-
-	* parse.y (node_assign): ditto.
-
-	* parse.y (yycompile): clear current node.
-
-Thu Aug 15 00:48:46 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): should not modify frozen Regexp.
-
-Tue Aug 13 18:33:18 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/tcltklib/tcltklib.c (ip_init): allocation framework.
-
-Tue Aug 13 15:32:14 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_replace): should copy ifnone.
-
-	* hash.c (rb_hash_dup): should preserve HASH_PROC_DEFAULT and
-	  HASH_DELETED flags.
-
-	* hash.c (rb_hash_shift): shift from empty hash should not return
-	  its default proc.
-
-	* hash.c (rb_hash_default_proc): new method. [new]
-
-Tue Aug 13 00:37:11 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_aref): no need for Bignum check.
-
-	* array.c (rb_ary_aset): explicit Bignum check removed.
-
-	* numeric.c (fix_aref): normalize bignum before bit-op.
-
-	* bignum.c (rb_big_rand): max may be Bignum zero.
-
-	* bignum.c (rb_cstr_to_inum): should normalize bignums, to avoid
-	  returning fixable bignum value.
-
-	* bignum.c (rb_uint2big): there should be no zero sized bignum.
-
-Mon Aug 12 23:45:28 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/extmk.rb.in: extmake() that works properly for both tkutil
-	  (tk/tkutil.so) and digest/sha1.
-
-Mon Aug 12 22:29:35 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ruby.c (set_arg0): Correct the position of #endif.
-
-Mon Aug 12 17:25:06 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_equal): should check HASH_PROC_DEFAULT too.
-
-Mon Aug 12 16:15:37 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* bignum.c (rb_big_cmp): raise for NaN.  (ruby-bugs-ja:PR#284).
-
-Sun Aug 11 09:34:07 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): set line number from all nodes.
-
-	* eval.c (proc_to_s): show source file/line if available.
-
-	* marshal.c (r_object): register TYPE_BIGNUM regardless real type.
-
-Sat Aug 10 23:47:16 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_cmp): use dbl2big() for Floats, instead of
-	  big2dbl().
-
-	* bignum.c (Init_Bignum): rb_big_zero_p() removed.  There may be
-	  Bignum zero.
-
-Fri Aug  9 13:31:40 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/Win32API/extconf.rb: check existence of <windows.h>.
-
-Thu Aug  8 09:37:02 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb (NilClass): must provide conversion block.
-
-	* lib/optparse.rb (String): ditto.
-
-Thu Aug  8 00:45:15 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): new argument added for original method name.
-	  preserve original method name in frame->orig_func.
-
-	* eval.c (is_defined): use frame->orig_func, not last_func.
-
-	* eval.c (rb_eval): ditto.
-
-	* eval.c (method_call): supply data->oid also to rb_call0().
-
-	* object.c (rb_class_allocate_instance): call rb_obj_alloc() when
-	  called from alias, thus invoke original "allocate".
-
-	* eval.c (remove_method): removing allocate from classes should
-	  cause NameError.
-
-Wed Aug  7 22:12:54 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/optparse.rb (OptionParser::Completion::convert): returned
-	  all values not first one.
-
-	* lib/optparse.rb (OptionParser::Switch::parse): return values as
-	  is.
-
-	* lib/optparse.rb (OptionParser::order): ditto.
-
-	* lib/optparse/time.rb: prior time.rb.
-
-	* lib/optparse/uri.rb: require standard uri module.  thanks to
-	  Minero Aoki.
-
-Wed Aug  7 09:51:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_equal): should check default values.
-
-Wed Aug  7 08:44:32 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/racc/cparse/cparse.c: reduce goto.
-
-Tue Aug  6 15:19:39 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* string.c (rb_str_rindex): must return -1 if unmatched.
-
-Mon Aug  5 22:41:18 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* MANIFEST: add lib/racc/parser.rb.
-
-	* ext/racc/cparse/cparse.c: code refine.
-
-	* ext/racc/cparse/MANIFEST: add depend.
-
-Sun Aug  4 22:30:50 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/curses/curses.c: follow allocation framework.
-
-Sat Aug  3 21:23:56 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): set constant in cbase scope.
-
-	* eval.c (assign): ditto.
-
-Fri Aug  2 09:12:32 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: follow allocation framework.
-
-Fri Aug  2 01:21:52 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (s_recvfrom): update RSTRING len.
-
-Thu Aug  1 17:47:15 2002  Tachino Nobuhiro <tachino@jp.fujitsu.com>
-
-	* parse.y (tokadd_string): ignore backslashed spaces in %w.
-
-Thu Aug  1 14:14:15 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_find): do not use rb_eval_cmd(); should not accept
-	  a string for if_none.
-
-Wed Jul 31 14:11:43 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_undef): undef should be done for klass, not ruby_class.
-
-Tue Jul 30 19:48:51 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-accurate-end-of-block): restrict search
-	  region.
-
-	* misc/ruby-mode.el (ruby-parse-partial): reversed wrong patch.
-
-Tue Jul 30 17:21:13 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-accurate-end-of-block): incomplete block
-	  caused infinite loop.
-
-	* misc/ruby-mode.el (ruby-parse-partial): returns nil unless
-	  delimiters found.
-
-Tue Jul 30 15:24:07 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/tcltklib/stubs.c (ruby_tcltk_stubs): win32_getenv returns
-	  the same address always, so allocate string by ruby_strdup.
-
-	* win32/win32.c: prototype; rb_w32_open_osfhandle().
-
-Tue Jul 30 09:11:07 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* eval.c (rb_thread_join_m): add parameter type declaration.
-
-Tue Jul 30 08:37:11 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* eval.c (localjump_error): add parameter type declaration.
-
-Mon Jul 29 16:00:54 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in: always use File.expand_path for $top_srcdir.
-
-Sat Jul 27 23:07:52 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_to_int): default to_int implementation for every
-	  numeric class.
-
-Sat Jul 27 08:09:03 2002  Booker C. Bense  <bbense@slac.stanford.edu>
-
-	* re.c (rb_reg_quote): initial part of the string was never copied
-	  to the quoted string.
-
-Fri Jul 26 23:03:53 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): no need to convert to string twice.
-
-Fri Jul 26 18:32:37 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-expr-beg): wrong indent at modifiers
-	  after ?.
-
-Fri Jul 26 16:01:16 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in (create_makefile): use Regexp in gsub.
-
-	* sample/mkproto.rb: ditto and fix bug.
-
-Fri Jul 26 14:31:06 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c: replace with Mersenne Twister RNG.
-
-Fri Jul 26 12:14:48 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (yylex): modify to accept a code like "m (a){...}".
-
-Thu Jul 25 09:05:02 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-delimiter): include here document.
-
-	* misc/ruby-mode.el (ruby-deep-arglist): skips spaces after
-	  parenthesis when 'space.
-
-	* misc/ruby-mode.el (ruby-imenu-create-index): fix for nested
-	  classes.
-
-	* misc/ruby-mode.el (ruby-accurate-end-of-block): added.  scan a
-	  block in the order.
-
-	* misc/ruby-mode.el (ruby-expr-beg): support for here document.
-
-	* misc/ruby-mode.el (ruby-parse-partial): splitted from
-	  ruby-parse-region.
-
-	* misc/ruby-mode.el (ruby-move-to-block): skips RD style comments.
-
-Wed Jul 24 09:47:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (jump_tag_but_local_jump): preserve retval in
-	  LocalJumpError exceptions.
-
-	* parse.y (command): no more check for "super outside of method".
-
-	* eval.c (rb_mod_define_method): should set last_class and
-	  last_func in the block->frame.
-
-Mon Jul 22 17:23:00 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (error_handle): should handle TAG_THROW as well.
-
-Fri Jul 19 10:52:32 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): new decimal notation '0d4567'.
-
-Thu Jul 18 11:52:02 2002  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (set_socket): new method.
-
-Thu Jul 18 06:51:24 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (yylex): fix typo.
-
-Wed Jul 17 18:41:28 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): new octal notation '0o777'.
-
-Mon Jul 15 18:36:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (string_content): every string_content node should
-	  return string only.  use NODE_EVSTR to coercing.
-
-	* eval.c (rb_eval): NODE_EVSTR support.
-
-Mon Jul 15 10:35:35 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (heredoc_identifier): fix typo.
-
-Sat Jul 13 09:30:04 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (literal_concat_string): wrong optimization.
-
-Sat Jul 13 01:25:38 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/resolv.rb (Resolv::DNS::open, close): new.
-
-	* lib/optparse.rb, lib/optparse: import.
-
-Fri Jul 12 06:34:05 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: rename HTTP.get_uri get_response.
-
-	* lib/net/http.rb: HTTP.get_print accepts URI objects.
-
-	* lib/net/http.rb: HTTP.get had not work with URI objects.
-
-Fri Jul 12 02:15:58 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* string.c (rb_str_match): fix for string match.
-
-Fri Jul 12 00:02:50 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/stringio/stringio.c (strio_gets_internal): fixed for record
-	  separator longer than 1.
-
-Thu Jul 11 17:59:20 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_quote): avoid unnecessary string allocation.
-
-	* string.c (get_pat): quote metacharacters before compiling a
-	  string into a regex.
-
-	* string.c (rb_str_split_m): special treatment of strings of size
-	  1, but AWK emulation.  now uses get_pat().
-
-	* string.c (rb_str_match_m): quote metacharacters.
-
-	* string.c (rb_str_match2): ditto.
-
-Thu Jul 11 12:59:23 2002  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/resolv.rb: untaint strings read from /etc/hosts and
-	  /etc/resolv.conf to prevent SecurityError when $SAFE==1.
-
-Thu Jul 11 09:00:43 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_slice_bang): if there's no corresponding
-	  substring, slice! should return nil without exception.
-
-Tue Jul  9 20:03:55 2002 Keiju Ishitsuka <keiju@ishitsuka.com>
-
-	* irb 0.9
-
-Sat Jul  6 07:35:02 2002  Jamie Herre  <jfh@gettysgroup.com>
-
-	* array.c (rb_ary_insert): type fixed.
-
-Fri Jul  5 09:17:00 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_split_m): accept separator value nil as well.
-
-Fri Jul  5 08:59:15 2002  Michal Rokos <michal@ruby-lang.org>
-
-	* enum.c: Fix bug in enum_sort_by and some code indents
-
-Fri Jul  5 05:00:40 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#initialize): improvement for mod_ruby.
-	  thanks to Sean Chittenden <sean@ruby-lang.org>, Shugo Maeda
-	  <shugo@modruby.net>
-
-Fri Jul  5 00:10:09 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_become): was leaking memory.
-
-Thu Jul  4 23:43:26 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y: remove useless function str_extend_p().
-
-Wed Jul  3 14:26:40 2002  Sean Chittenden  <sean@ruby-lang.org>
-
-	* lib/net/ftp.rb (get): new method.
-
-	* lib/net/ftp.rb (putt): ditto.
-
-	* lib/net/ftp.rb (binary): ditto.
-
-	* lib/net/ftp.rb (binary=): ditto.
-
-Wed Jul  3 13:57:53 2002  Sean Chittenden  <sean@ruby-lang.org>
-
-	* lib/net/ftp.rb (getbinaryfile): the second argument (localfile)
-	  is now optional.
-
-	* lib/net/ftp.rb (gettextfile): ditto.
-
-Wed Jul  3 13:45:42 2002  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb: use &block and yield for speed.
-
-Wed Jul  3 02:32:31 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#initialize): improvement for mod_ruby.
-
-Tue Jul  2 14:53:10 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_include_module): should not alter other
-	  classes/modules by inclusion.  by this fix, local order may not
-	  be preserved for some cases.
-
-	* class.c (include_class_new): module may be T_ICLASS; retrieve
-	  original module information.
-
-Tue Jul  2 14:13:11 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#header): accept any type as value.
-
-Sun Jun 30 17:05:29 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (seekdir, telldir): add ac_cv_func_telldir=yes,
-	  ac_cv_func_seekdir=yes for MinGW.
-
-Sat Jun 29 01:43:32 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* io.c (pipe_finalize, pipe_popen): two-way pipe support for win32.
-
-	* win32/win32.c (ChildRecord, FindFreeChildSlot): ditto.
-
-	* win32/win32.c, win32/win32.h (pipe_exec): new function for two-way
-	  pipe support for win32.
-
-	* win32/win32.c, win32/win32.h (FindPipedChildSlot, rb_w32_popen,
-	  rb_w32_pclose): removed functions for two-way pipe support for win32.
-
-Fri Jun 28 23:49:34 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* pack.c (pack_unpack): change names of local variables because their
-	  names are overlapped.
-
-Fri Jun 28 17:54:07 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb: fix object address.
-
-Thu Jun 27 23:55:50 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_stat): fix buffer overflow. (ruby-bugs:PR#329)
-
-Thu Jun 27 20:57:45 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/prettyprint.rb, lib/pp.rb: convenience methods added.
-
-Thu Jun 27 15:22:18 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/prettyprint.rb: re-implemented for incremental output to handle
-	  huge data.  API is changed a bit.
-
-	* lib/pp.rb: adapt new pretty printing API.
-
-Thu Jun 27 08:28:18 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (literal_concat_string): non-string last expression in
-	  #{} was ignored when followed by literal.
-
-Thu Jun 27 03:42:04 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_expr_str): need to process backslashes properly.
-
-Wed Jun 26 17:33:38 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_any_to_a): declare Object#to_a to be obsolete.
-
-	* object.c (rb_Array): do not convert nil into [] automagically.
-
-Wed Jun 26 15:40:00 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (words, qwords): word list literal rules.
-
-	* parse.y (parse_string): ditto.
-
-	* parse.y (yylex): %W: word list literal with interpolation. [new]
-
-Tue Jun 25 18:53:34 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (string1, xstring, regexp): moved lex_strnest
-	  initialization to string_contents/xstring_contents.
-
-Tue Jun 25 19:24:38 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* dln.c: remove definition rb_loaderror().
-
-Tue Jun 25 00:34:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_Integer): use "to_int" instead of
-	  "to_i". [experimental]
-
-	* object.c (nil_to_f): new method.
-
-	* object.c (rb_Integer): Symbols and nil should cause error.
-
-	* object.c (rb_Float): nil should cause error.
-
-Tue Jun 25 00:21:00 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* dln.c: remark definition rb_loaderror().
-
-Tue Jun 25 00:14:07 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (string_dvar): allow back references in interpolation.
-
-Mon Jun 24 16:32:31 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_eval): NODE_EVSTR is no longer used.
-
-	* eval.c (eval): not enforce to make assigned variables dynamic.
-
-	* parse.y (string): split rules to strings/xstring/regexp to allow
-	  arbitrary statements inside string interpolation.
-
-	* parse.y (here_document): splitted into three phases.
-
-	* parse.y (literall_append, literal_concat): added.
-	  append/concatenate string literals.
-
-	* sample/test.rb (valid_syntax): adjust line number for BEGIN.
-
-	* lib/mkmf.rb (create_makefile): get rid of nested string.
-
-	* lib/mkmf.rb (install_rb): site-install didn't work properly.
-
-Sun Jun 23 00:19:10 2002  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb, sample/cal.rb, sample/goodfriday.rb:
-	  updated to the new version (based on date2 3.3).
-
-Sat Jun 22 14:41:33 2002  Guy Decoux  <ts@moulon.inra.fr>
-
-	* ext/socket/socket.c (sock_addrinfo): make all 3 versions of
-	  getaddrinfo happy.  [ruby-core:00184]
-
-Fri Jun 21 18:49:58 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): __END__ should not be effective within
-	  string literals.
-
-Thu Jun 20 21:09:37 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/readline/readline.c (readline_readline): get rid of
-	  libreadline's bug. (ruby-bugs-ja:PR#268)
-
-Thu Jun 20 17:10:27 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/ftool.rb (BUFSIZE): tuning, set buffer length to 8192.
-
-	* configure.in (__NO_ISOCEXT): add for mingw-runtime 2.0-2.
-
-	* configure.in (__MSVCRT__): removed because it is defined
-	  in the GCC specs.
-
-Wed Jun 19 14:46:18 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb, lib/mkmf.rb (xsystem): open the log file if xsystem
-	  is called.
-
-Wed Jun 19 01:01:13 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (here_document): should be aware of __END__ within here
-	  documents.
-
-Wed Jun 19 00:50:50 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (yylex): ? followed by successive word characters is
-	  ternary operator not numeric literal.
-
-	* parse.y (yylex): commands after break/next/rescue can take
-	  arguments.  (ruby-bugs-ja:PR#265)
-
-Tue Jun 18 19:20:16 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/mkexports.rb: remove unnecessary exports. (ruby-dev:17418)
-
-Tue Jun 18 12:50:17 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (yylex): should pushback proper char after '<<'.
-
-	* parse.y (range_op, cond0, cond): get rid of doubled warnings.
-
-	* parse.y (value_expr): reduce recursion level.
-
-	* parse.y (logop): ditto.
-
-Mon Jun 17 11:11:34 2002  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* string.c (rb_str_crypt): result need not be tainted always.
-
-Mon Jun 17 10:51:37 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* dln.c (dln_load): need to preserve dln_strerror() result,
-	  calling other dl family can clear it.
-
-Sat Jun 15 22:56:37 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): obsolete '?<whitespace>'; use '?\s', '?\n',
-	  etc, instead.
-
-Sat Jun 15 18:51:13 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* dir.c (glob_helper): Use lstat() instead of stat() so it catches
-	  a dead symlink.  Given a dead symlink named "a", Dir.glob("?")
-	  did catch it but Dir.glob("a") somehow didn't.
-
-Sat Jun 15 01:59:05 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): no here document after a dot.
-
-	* parse.y (yylex): should have set lex_state after '`'.
-
-	* parse.y (yylex): should have set lex_state properly after
-	  tOP_ASGN.
-
-Fri Jun 14 21:01:48 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* bcc32/mkexports.rb: insert sleep(1) for win9x.
-
-	* bcc32/configure.bat: change return code LF -> CRLF for win9x.
-
-	* win32/win32.c: fix rb_w32_open_osfhandle()
-
-Fri Jun 14 15:22:19 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (read_escape): deny zero-width hexadecimal character.
-	  (ruby-bugs-ja:PR#260)
-
-	* parse.y (tokadd_escape): ditto.
-
-	* regex.c (re_compile_pattern): ditto.
-
-Fri Jun 14 00:49:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big2dbl): return canonical HUGE_VAL for infinity.
-
-Thu Jun 13 09:43:37 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (svalue_to_avalue): v may be Qundef.  This fix was
-	  suggested by Guy Decoux.
-
-Thu Jun 13 00:33:49 2002  takuma ozawa  <metal@mine.ne.jp>
-
-	* hash.c (rb_hash_s_create): use rb_hash_aset() instead of calling
-	  st_insert() directly, to dup&freeze string keys.
-
-Thu Jun 13 00:12:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): proper error message for "@@0".
-
-	* parse.y (yylex): paren to parse_string() must be zero for
-	  unparenthesized strings.
-
-	* parse.y (str_extend): broken string when unterminated "#{".
-
-	* enum.c (enum_sort_by): had a bug in 1 element enumeration.
-
-Wed Jun 12 18:04:44 2002  akira yamada  <akira@arika.org>
-
-	* uri/common.rb (REGEXP::PATTERN::X_ABS_URI): 'file:/foo' is valid.
-
-	* uri/generic.rb (Generic#xxx=): should return substituted value.
-	  (ruby-dev:16728.)
-
-	* test/generic.rb (test_set_component): added tests for the above
-	  change.
-
-Wed Jun 12 02:38:00 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (stmt): fix typo.
-
-Wed Jun 12 01:10:55 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): 'do' should return kDO_BLOCK on EXPR_ENDARG.
-
-	* parse.y (singleton): "def (()).a end" dumped core.
-
-	* parse.y (range_op): node may be null.
-
-	* parse.y (match_gen): ditto.
-
-Tue Jun 11 19:20:34 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (LIBRUBY): rename to lib$(LIBRUBY_SO).a on Cygwin/MinGW.
-
-	* configure.in, cygwin/GNUmakefile: use dllwrap when --disable-shared
-	  is specified.
-
-Tue Jun 11 17:12:04 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): void value check for "..", "...", "!", and "not".
-
-	* parse.y (match_gen): void value check for "=~".
-
-	* parse.y (value_expr): check NODE_AND and NODE_OR recursively.
-
-	* parse.y (cond0): void value check added for conditionals.
-
-Tue Jun 11 13:18:47 2002  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (noop): new method.
-
-	* lib/net/ftp.rb (site): ditto.
-
-Tue Jun 11 13:15:41 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* bcc32/Makefile.sub: set PROCESSOR_LEVEL to 6 if it's too big value.
-
-	* win32/Makefile.sub: ditto.
-
-Tue Jun 11 12:37:46 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* bcc32/configure.bat fix.
-
-Tue Jun 11 10:18:23 2002  KONISHI Hiromasa <konishih@fd6.so-net.ne.jp>
-
-	* new platform [bccwin32] merged.
-	  - create new folder bcc32
-	  - modify any files for bccwin32
-	      error.c, file.c, hash.c, io.c, instruby.rb,
-	      ext/extmk.rb.in,
-	      lib/mkmf.rb, lib/ftools.rb,
-	      ext/digest/defs.h,
-	      ext/dl/depend, ext/dl/dl.c, ext/dl/sym.c, ext/dl/extconf.rb,
-	      ext/socket/extconf.rb,
-	      ext/pty/extconf.rb,
-	      ext/tcltklib/extconf.rb
-	      ext/Win32API/Win32API.c,
-	      win32/dir.h, win32/win32.c, win32/win32.h, win32/resource.rb
-
-Mon Jun 10 19:02:19 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* numeric.c (fix_lshift): negative shift count means right shift.
-	  (ruby-bugs-ja:PR#248)
-
-	* numeric.c (fix_rshift): return -1 when left side operand is
-	  negative. (ruby-bugs-ja:PR#247)
-
-	* parse.y (yylex): `0_' should be an error. (ruby-bugs-ja:PR#249)
-
-Mon Jun 10 01:53:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): ruby_frame->last_func may be null, if it's
-	  called outside of a method.
-
-	* parse.y (arg): use INT2NUM, not INT2FIX for tUMINUS.
-
-	* parse.y (arg): unnecessary negative tPOW treatment.
-
-	* parse.y (tokadd_escape): wrong backslash escapement.
-
-Sun Jun  9 17:40:41 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl: change the callback mechanism.
-
-Sat Jun  8 00:48:38 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (stmt,arg): too much void value check.
-
-	* parse.y (stmt,arg): need to check void value on rules which does
-	  not use node_assign().
-
-Thu Jun  6 19:50:39 2002  KONISHI Hiromasa <H_Konishi@ruby-lang.org>
-
-	* sample/biorhythm.rb (getPosiiton,etc)
-	  fix at changing Date module ( Date is changed Fixnum to Rational )
-
-Thu Jun  6 17:42:39 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (ipaddr): need not to taint hostnames.
-
-Thu Jun  6 12:04:30 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): use sub! instead of []= because
-	  []= causes exception.
-
-Thu Jun  6 11:42:15 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* lib/thread.rb (Queue::pop): get rid of race condition.
-
-Wed Jun  5 01:56:47 2002  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: Stop the running zombi-eventloop when
-	  mainloop_watchdog is killed.
-
-Tue Jun  4 23:09:24 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_include): should be based on "<=>", whereas
-	  member? still is based on "each".
-
-	* range.c (range_min,range_max): redefine methods based on "<=>".
-
-Tue Jun  4 18:28:37 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/extconf.rb: The IPv6 stack of Cygwin is still incomplete.
-
-	* ext/Win32API/extconf.rb: refactoring.
-
-Tue Jun  4 07:03:33 2002  Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkfont.rb:  Fix bugs on TkFont.init_widget_font for Tk8.x.
-
-	* ext/tk/lib/tkafter.rb: Add self to 1st argument of interval-
-	  and loop-proc
-	  TkAfter#current_interval returns an interval (sleep) time value
-	  TkAfter#current_args returns an array of arguments
-	  TkAfter#return_value returns a return value of last loop-proc
-
-	* ext/tk/lib/tk*.rb: Allow to use Symbols for parameters.
-
-	* ext/tk/lib/tkcanvas.rb: (TkcItem) Add 'coords' parameter to the
-	  canvas item constructor (for new notation of constructor).
-
-	* ext/tcltklib/tcltklib.c: New 'mainloop' and 'mainloop_watchdog'.
-
-	* ext/tk/lib/tk.rb: (Tk.restart) Add 'app-name' paramater and
-	  'use' parameter.
-
-	* ext/tk/lib/tk.rb: Add new parameter 'widgetname' to the widget
-	  constructor to support effective use of Resource Database.
-
-	* ext/tk/lib/tk.rb: TkOption::get always returns a tainted string.
-
-Tue Jun  4 00:45:50 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/socket/addrinfo.h: typo.
-
-	* ext/socket/getaddrinfo.c (gai_strerror): make literals const.
-
-	* ext/socket/socket.c (init_inetsock): ensures resources are
-	  freed at exceptions.
-
-	* ext/socket/socket.c (init_unixsock): ditto.
-
-	* ext/socket/socket.c (udp_connect): ditto.
-
-Mon Jun  3 20:39:51 2002  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/extconf.rb : change PLATFORM with RUBY_PLATFORM.
-
-Mon Jun  3 07:07:07 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (here_document): check if identifier is terminated.
-	  (ruby-bugs-ja:PR#239)
-
-	* parse.y (yylex): should pushback proper char after '**'.
-	  (ruby-bugs-ja:PR#240)
-
-Mon Jun  3 05:56:17 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_aset): should raise error if an indexing string
-	  is not found in the receiver.
-
-	* sprintf.c (rb_f_sprintf): "%d" should convert objects into
-	  integers using Integer().
-
-Sat Jun  1 19:20:07 2002  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole: merge from rough.
-
-Fri May 31 17:11:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile::size): added.
-
-Thu May 30 12:52:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): iteration done using "+" if elements are
-	  Numeric.  Otherwise using "succ".
-
-	* range.c (range_each): iteration done using "succ".  If the
-	  elements does not respond to "succ", raise TypeError.  As a
-	  result, all Enumerable methods, e.g. collect, require elements
-	  to respond to "succ".
-
-	* range.c (range_member): comparison done using "each", if
-	  elements are non-Numeric or no-"succ" objects.  Otherwise
-	  compare using "<=>".
-
-	* range.c (Init_Range): remove "size" and "length".
-
-Thu May 30 09:16:36 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/cgi.rb: if StringIO is usable then use it.
-
-Wed May 29 18:55:47 2002  KONISHI Hiromasa <H_Konishi@ruby-lang.org>
-
-	* function renames my* and win32_* to rb_w32_* in win32/win32.c
-	  fixed files win32/win32.c, win32/win32.h, win32/dir.h,
-	              hash.c, rubysig.h, signal.c, ext/socket/socket.c
-
-Wed May 29 17:32:55 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* time.c (tmcmp, search_time_t): activate unless HAVE_TIMEGM.
-
-Wed May 29 13:45:15 2002  Wakou Aoyama  <wakou@ruby-lang.org>
-
-	* lib/cgi.rb: not use const if GET, HEAD. check multipart form head.
-
-Tue May 28 17:56:02 2002  Sean Chittenden  <sean@ruby-lang.org>
-
-	* parse.y: yyparse #defines moved from intern.h
-
-	* ruby.c (proc_options): access prefixed "ruby_yydebug".
-
-	* applied modifies to pacify some of gcc -Wall warnings.
-
-Tue May 28 14:07:00 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): no more ugly hack for "**", so that "-2**2" to be
-	  parsed as "(-2)**2", whereas "- 2**2" or "-(2)**2" to be parsed
-	  as "-(2**2)".
-
-	* parse.y (yylex): '-2' to be literal fixnum. [new]
-
-Tue May 28 12:13:37 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (scope_node): trick to keep the node has a scope.
-
-	* eval.c (rb_eval): NODE_EVSTR: write back local_tbl to the node.
-
-	* eval.c (rb_eval): NODE_SCOPE: hold the scope node in ruby_scope.
-
-	* eval.c (module_setup): ditto.
-
-	* eval.c (rb_call0): ditto.
-
-	* node.h (NEW_DASGN, NEW_DASGN_CURR): remove surplus semicolons.
-
-Fri May 24 09:06:29 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_arg): nil test against v[6] (usec).
-
-Thu May 23 16:39:21 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ruby.c (proc_options): option parsing problem.
-	  (ruby-bugs-ja:PR#233)
-
-Thu May 23 09:13:56 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): removed "-*-" support for #! line.
-
-	* io.c (rb_io_s_sysopen): new method to get a raw file
-	  descriptor. [new]
-
-	* ext/socket/socket.c (tcp_sysaccept): new method to return an
-	  accepted socket fd (integer). [new]
-
-	* ext/socket/socket.c (unix_sysaccept,sock_sysaccept): ditto.
-
-Wed May 22 21:26:47 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ruby.c (proc_options): -T consumes digits only.
-
-Wed May 22 20:18:31 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: need not link vsnprintf.o on MinGW.
-
-Wed May 22 18:34:23 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (yylex): Here-document label ate '-'.
-
-Tue May 21 13:25:18 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords): symbols end with
-	  '_'.
-
-Tue May 21 04:48:37 2002  Sean Chittenden <sean@chittenden.org>
-
-	* lib/cgi-lib.rb: Checking for constant MOD_RUBY instead of
-	  environment variable. Remove a mod_ruby warning and use
-	  Apache::request.headers_out[] instead.
-
-Tue May 21 01:16:46 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (bodystmt): ensure clause was executed on else clause
-	  without rescue clause.
-
-Tue May 21 00:20:25 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl/ptr.c: rename PtrData::alloc to PtrData::malloc.
-
-	* ext/dl/lib/dl/struct.c: rename Struct#alloc to Struct#malloc.
-
-Mon May 20 14:29:14 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): should do exact match for Module#==.
-
-	* compar.c (cmp_eq): returns 'false' if <=> returns 'nil'.
-
-	* compar.c (cmp_gt,cmp_ge,cmp_lt,cmp_le,cmp_between): ditto.
-
-Mon May 20 13:28:52 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* io.c (rb_io_clone): writing stream was not copied properly.
-
-Sat May 18 21:38:11 2002  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb, lib/parsedate.rb:
-	  updated to the new version (based on date2 3.2.1).
-
-Sat May 18 21:18:00 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): add VC++4/5 support about noreturn
-	  directive.
-
-Sat May 18 02:16:41 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): should propagate taintedness.
-
-	* pack.c (pack_unpack): ditto.
-
-Fri May 17 16:16:19 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* sample/test.rb: use eval instead of './miniruby -c',
-	  in order to check a syntax error.
-
-Thu May 16 14:46:34 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_select): cleanup conditional compilation.
-
-Wed May 15 06:13:35 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_schedule): need to preserve errno before
-	  calling rb_trap_exec().
-
-	* regex.c (calculate_must_string): a bug in charset/charset_not
-	  parsing.
-
-Tue May 14 18:17:44 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* win32/Makefile.sub: config.h inlined.  and catch up with the
-	  latest change.
-
-	* win32/config.h.in: no longer used.
-
-Tue May 14 14:49:05 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* gc.c (is_pointer_to_heap): avoid GCC 3.1 warnings.
-
-	* missing/strftime.c (timezone): it should take no argument on Cygwin.
-
-Tue May 14 03:07:35 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_clear_cache_by_class): new function.
-
-	* eval.c (set_method_visibility): should have clear cache for
-	  updated visibility.
-
-Mon May 13 14:38:33 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* djgpp/config.hin, djgpp/config.sed: catch up with the latest change.
-
-Mon May 13 01:59:55 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_to_s): default format precision to be "%.16g".
-
-	* util.c (ruby_strtod): use own strtod(3) implementation to avoid
-	  locale hell.  Due to this change "0xff".to_f no longer returns 255.0
-
-Sun May 12 03:01:08 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* missing.h: add for missing/*.c.
-
-	* ruby.h: add `#include "missing.h"'.
-
-	* Makefile.in: add the dependency of missing.h by gcc -MM.
-
-	* MANIFEST: add missing.h
-
-Sat May 11 23:24:52 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl: enable dl's stack emulation for constructing function call.
-
-Sat May 11 10:52:09 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* dir.c (glob_helper): remove escaping backslashes.
-
-Sat May 11 02:46:43 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (avalue_to_yvalue): new function to distinguish yvalue
-	  (no-arg == Qundef) from svalue (no-arg == Qnil).
-
-	* eval.c (rb_yield_0): use avalue_to_yvalue().
-
-	* eval.c (assign): warn if val == Qundef where it means rhs is
-	  void (e.g. yield without value or call without argument).
-
-Fri May 10 19:00:47 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* parse.y (here_document): preserve line number begins here
-	  document.
-
-Fri May 10 01:55:44 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_thread_join): added an argument to limit time to wait
-	  the thread.
-
-	* eval.c (rb_thread_join_m): new. and added optional argument.
-
-Wed May  8 23:48:40 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (value_expr): need not to warn for WHILE and UNTIL,
-	  since they can have return value (via valued break).
-
-Tue May  7 17:13:40 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: forgot to add '-Wl,' to the gcc option on Cygwin/MinGW.
-
-Tue May  7 15:41:33 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/iconv/iconv.c (iconv_try): should initialize exceptions
-	  properly. (ruby-bugs-ja:PR#232)
-
-Tue May  7 15:28:03 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* eval.c (rb_yield_0): The destination of the goto jump was wrong.
-
-Tue May  7 09:17:51 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* eval.c (superclass): undesirable "unexpected return" when the
-	  superclass is not a Class.
-
-Sun May  5 06:53:45 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb: exclude topdir from the system configuration
-	  section and prevent it from being overridden.
-
-Fri May  3 20:19:00 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: add #include <errno.h> in AC_CHECK_DECLS().
-
-	* win32/config.h.in: define HAVE_DECL_SYS_NERR.
-
-Thu May  2 23:42:40 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_quote): # also should be quoted.
-
-Thu May  2 18:27:13 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: use 'do...end' instead of '{}' for
-	  Borland make.
-
-Thu May  2 08:01:56 2002  Chris Thomas  <kenshin@apple.com>
-
-	* error.c: use HAVE_DECL_SYS_NERR instead of platform names.
-
-Tue Apr 30 09:23:05 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_step): better iteration condition for float
-	  values;  suggested by Masahiro TANAKA <masa@ir.isas.ac.jp>.
-
-Tue Apr 30 05:59:42 2002  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* range.c (range_step): step (for Range#step method) <= 0 makes no
-	  sense, thus ArgError will be raised.
-
-	* range.c (range_each): Range#each method is special case for
-	  Range#step(1)
-
-Mon Apr 29 18:46:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_find_file): load must be done from an absolute path if
-	  $SAFE >= 4.
-
-Sun Apr 28 17:01:56 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (insert): fix prototype for ANSI C.
-
-Fri Apr 26 13:47:15 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_partition): new method. [new]
-
-Fri Apr 26 13:41:00 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_quote): quote whitespaces for /x cases.
-
-Fri Apr 26 06:48:23 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl/ptr.c (cary2ary): missing break in switch statements.
-
-Fri Apr 26 09:35:47 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_proc_new): make Proc from C function. [new]
-
-	* intern.h (rb_proc_new): prototype.
-
-Wed Apr 24 14:56:46 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (proc_to_proc): return self. [new]
-
-	* eval.c (block_pass): no need to convert if block is Proc.
-
-Wed Apr 24 14:21:41 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: set size of the initial stack from
-	  2MB to 32MB on MinGW/Cygwin.
-
-Wed Apr 24 14:06:35 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_step): try to reduce residual on Float operations.
-
-Wed Apr 24 06:48:31 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* io.c (rb_io_mode_flags): both 'r+b' and 'rb+' should be allowed.
-
-	* io.c (rb_io_mode_modenum): ditto.
-
-Wed Apr 24 01:16:14 2002  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_mark): must check if ptr is NULL
-	  first.  [ruby-talk:38873]
-
-	* lib/mkmf.rb (create_makefile): should print depend file when
-	  make is other than nmake.
-
-Wed Apr 24 00:37:12 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/extmk.rb.in (create_makefile): use `{$(srcdir)}' directive instead
-	  of `$(srcdir)/' when including depend file.
-
-	* lib/mkmf.rb (create_makefile): add `{$(srcdir)}' when including depend
-	  file.
-
-Tue Apr 23 12:58:18 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_memerror): rename from mem_error, and exported.
-
-	* gc.c (Init_GC): pre-allocate NoMemoryError instance.
-
-	* object.c (convert_type): error message changed from "failed to
-	  convert" to "cannot convert", since it does not try to convert
-	  if an object does not respond to the converting method.
-
-Mon Apr 22 09:31:30 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): convert Method to Proc using
-	  rb_check_convert_type().
-
-	* object.c (rb_check_convert_type): always convert T_DATA
-
-	* eval.c (rb_thread_cleanup): should not terminate main_thread by
-	  Fatal error.
-
-	* regex.c (is_in_list): need to not exclude NUL and NEWLINE.
-
-Sat Apr 20 00:19:13 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_expr_str): wrong backslash escapement.
-
-	* re.c (rb_reg_expr_str): do not escape embedded space
-	  characters.
-
-Fri Apr 19 22:03:40 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: add -DNT to $CFLAGS instead of $CPPFLAGS.
-
-	* win32/setup.mak: ditto.
-
-Fri Apr 19 17:24:22 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): T_DATA process patch from Joel VanderWerf
-	  <vjoel@PATH.Berkeley.EDU>.  This is temporary hack; it remains
-	  undocumented, and it will be removed when marshaling is
-	  re-designed.
-
-	* marshal.c (r_object): ditto.
-
-Fri Apr 19 17:10:55 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_step): Integer#step is moved to Numeric#step;
-	  Fixnum#step is merged into this method.
-
-	* numeric.c (int_dotimes): Fixnum#times is merged.
-
-	* numeric.c (int_upto): Fixnum#upto is merged.
-
-	* numeric.c (int_downto): Fixnum#downto is merged.
-
-Fri Apr 19 16:22:55 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/extconf.rb: include <windows.h>, <winsock.h> on _WIN32.
-
-	* win32/win32.c: include <mswsock.h> on __MINGW32__.
-
-	* configure.in: cleanup for autoconf 2.5x.
-
-	* configure.in: use gcc -shared instead of dllwrap on Cygwin/MinGW.
-
-	* ext/extmk.rb, lib/mkmf.rb: get rid of "--def=".
-
-Fri Apr 19 14:57:44 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* re.c (rb_reg_to_s): remove redundant shy group.
-
-Fri Apr 19 01:08:20 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_cleanup): current thread may be THREAD_STOPPED,
-	  for example when terminated from signal handler.
-
-Thu Apr 18 19:03:15 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): remove /p support.
-
-	* regex.h: ditto.
-
-	* parse.y (parse_regx): ditto.
-
-Thu Apr 18 17:01:43 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl/ptr.c (rb_dlptr_cast): removed.
-
-Thu Apr 18 17:01:43 2002  Tanaka Akira  <akr@m17n.org>
-
-	* re.c (rb_reg_to_s): new function for Regexp#to_s.
-
-Wed Apr 17 23:55:34 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/Setup*, ext/bigfloat/*: Back out the import of BigFloat in
-	  favor of its forthcoming successor, BigDecimal.
-
-Wed Apr 17 16:53:33 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_expr_str): should treat backslash specially in
-	  escaping.
-
-Wed Apr 17 08:16:41 2002  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* io.c: complete off_t handling; missing argument for
-	  fptr_finalize(); polished rb_scan_args call.
-
-Wed Apr 17 00:01:59 2002  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* dir.c: wrap multi-statement macro by do { } while (0)
-
-	* eval.c, numeric,c, sprintf.c, util.c: ditto.
-
-Tue Apr 16 08:59:50 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (assign): convert mrhs to mvalue.
-
-Mon Apr 15 18:12:57 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_eq): check `y == x' if y is neither Fixnum,
-	  Bignum, nor Float.
-
-Mon Apr 15 09:27:31 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_unpack): should treat 'U' in character unit, not in
-	  byte unit.
-
-	* error.c (exc_initialize): should clear backtrace information.
-
-Sat Apr 13 23:42:43 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_fptr_cleanup): should close IO created by IO.new(fd).
-
-	* rubyio.h: remove FMODE_FDOPEN
-
-Fri Apr 12 12:54:04 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: use missing/acosh.c.
-
-	* win32/config.h.in: define HAVE_COSH, HAVE_SINH, and HAVE_TANH.
-
-Fri Apr 12 02:58:55 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* struct.c (rb_struct_select): fix typo.
-
-Fri Apr 12 00:34:17 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* MANIFEST (missing/acosh.c): added.
-
-	* Makefile.in (missing/acosh.c): ditto.
-
-	* Makefile.in (missing/fileblocks.c): ditto.
-
-	* configure.in (AC_REPLACE_FUNCS): check acosh() on behalf of
-	  inverse hyperbolic functions, asinh() and atanh().
-
-	* missing/acosh.c: added for acosh(), asinh() and atanh().
-
-Thu Apr 11 20:01:44 2002  Masahiro Tomita  <tommy@tmtm.org>
-
-	* io.c (io_write): check error if written data is less than
-	  specified size to detect EPIPE.
-
-Thu Apr 11 19:10:37 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (remain_size): IO#read returns "" if file.size == 0.
-
-	* random.c (rand_init): add check for initstate(3).
-
-	* configure.in: ditto.
-
-Thu Apr 11 09:31:19 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl/ptr.c: raise() -> rb_raise(). (Thanks Tetsuya Watanabe)
-
-	* ext/dl/sym.c: ditto.
-
-Thu Apr 11 07:57:48 2002  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* eval.c (assign): ruby_verbose should be surrounded by RTEST().
-
-	* object.c (rb_str2cstr): ditto.
-
-	* parse.y (void_expr): ditto.
-
-	* parse.y (void_stmts): ditto.
-
-	* variable.c (rb_ivar_get): ditto.
-
-	* variable.c (rb_cvar_set): ditto.
-
-	* variable.c (rb_cvar_get): ditto.
-
-Thu Apr 11 07:02:31 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl: Add dl.txt instead of README and README.html.
-
-Thu Apr 11 01:55:52 2002  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi/session.rb: support for multipart form.
-
-Wed Apr 10 18:42:23 2002  Tachino Nobuhiro <tachino@jp.fujitsu.com>
-
-	* dir.c (glob_helper): should have proceed link when link->path
-	  was non existing symbolic link.
-
-Wed Apr 10 17:30:19 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_obj_remove_instance_variable): raise NameError if
-	  specified instance variable is not defined.
-
-	* variable.c (generic_ivar_remove): modified to check ivar
-	  existence.
-
-Wed Apr 10 14:16:45 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords): fontify symbols for
-	  unary operators and aset.
-
-Tue Apr  9 13:40:31 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* lib/mkmf.rb (try_link0): need expand macro in command, sync with
-	  ext/extmk.rb.in.
-
-	* lib/mkmf.rb (try_cpp): ditto.
-
-	* lib/mkmf.rb (egrep_cpp): ditto.
-
-Tue Apr  9 12:44:59 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/stringio/stringio.c (check_modifiable): performance
-	  improvement.  avoid calling rb_str_modify() twice.
-
-	* ext/stringio/stringio.c (strio_ungetc): ditto.
-
-	* ext/stringio/stringio.c (strio_putc): ditto.
-
-	* ext/stringio/stringio.c (strio_write): ditto, and use
-	  rb_str_cat() as possible.
-
-Tue Apr  9 05:17:48 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* re.c (match_select): fix index references and make
-	  MatchData#select actually work.
-
-Tue Apr  9 00:20:52 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): new method based on the proposal
-	  (and patch) from Mike Hall. [new]
-
-Mon Apr  8 04:50:51 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (error_handle): default to 1 unless status is set.
-
-	* eval.c (ruby_options): guard error_handle() with PROT_NONE.
-
-	* eval.c (ruby_stop): ditto.
-
-Mon Apr  8 01:22:24 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (math_acosh): added. [new]
-
-	* math.c (math_asinh): ditto.
-
-	* math.c (math_atanh): ditto.
-
-	* struct.c (rb_struct_each_pair): method added. [new]
-
-Sat Apr  6 02:04:49 2002  Guy Decoux  <ts@moulon.inra.fr>
-
-	* class.c (rb_singleton_class): wrong condition; was creating
-	  unnecessary singleton class.
-
-Sat Apr  6 01:09:41 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (remove_sign_bits): simplifies the condition.
-
-	* bignum.c (get2comp): calculate proper carry over.
-
-Fri Apr  5 05:07:28 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl: Add dl/struct.rb.
-
-Thu Apr  4 14:08:52 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl/lib/dl/import.rb: Get rid of ineffective
-	  encoding/decoding procedures.
-
-Thu Apr  4 01:08:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_step): step may be a float less than 1.
-
-Wed Apr  3 20:42:34 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl: Merge Nakada's patch.
-
-	* ext/dl/dl.h: define StringValuePtr for ruby-1.6.
-
-Wed Apr  3 15:37:24 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl: Add dl/types.rb.
-
-Wed Apr  3 01:54:10 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/extmk.rb.in (enable_config): follow lib/mkmf.rb.
-
-Tue Apr  2 19:59:13 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* ext/dl: Merge from rough.
-
-Tue Apr  2 15:17:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* Makefile.in (CPPFLAGS): remove @includedir@.
-
-	* lib/mkmf.rb (create_makefile): ditto.
-
-	* ext/extmk.rb.in (create_makefile): ditto.
-
-Tue Apr  2 15:09:05 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_addrinfo): should clear addrinfo hints.
-
-Mon Apr  1 23:48:12 2002  Takaaki Tateishi <ttate@kt.jaist.ac.jp>
-
-	* lib/mkmf.rb: install any files using $INSTALLFILES.
-	  (see also [ruby-dev:16683])
-
-Mon Apr  1 17:25:50 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_fptr_cleanup): need flush even when io will not be
-	  closed.
-
-	* io.c (rb_io_initialize): was calling wrong function
-	  rb_io_mode_flags().
-
-Mon Apr  1 16:52:00 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/sdbm/init.c (each_pair): moved prototype before the
-	  definition.
-
-	* ext/racc/cparse/cparse.c (call_scaniter): ditto.
-
-Mon Apr  1 15:11:40 2002  NAKAMURA Usaku <usa@ruby-lang.org>
-
-	* ext/racc/cparse/cparse.c: prototype; call_scaniter().
-
-	* ext/sdbm/init.c: prototype; each_pair().
-
-	* ext/tcltklib/tcltklib.c: prototypes; _timer_for_tcl() and ip_ruby(),
-	  Nobu's patch at [ruby-dev:14483].
-
-Mon Apr  1 10:56:40 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (match_setter): it's OK to assign nil to $~.
-
-Mon Apr  1 03:55:46 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_fptr_cleanup): do not close IO created by for_fd().
-
-	* io.c (rb_io_initialize): mark IO created by for_fd
-
-	* ext/socket/socket.c (bsock_s_for_fd): ditto.
-
-Fri Mar 29 20:21:58 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* lib/mkmf.rb (create_makefile): default FLAGS to empty strings.
-
-Fri Mar 29 16:36:52 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* lib/mkmf.rb (arg_config): should use Shellwords::shellwords like
-	  ext/extmk.rb.in.
-
-	* lib/mkmf.rb (enable_config): default had priority over command
-	  line options and configure_args.
-
-	* lib/mkmf.rb: support autoconf 2.53 style variables from
-	  environment.
-
-	* lib/mkmf.rb: add directory options.
-
-Fri Mar 29 15:49:29 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/README.win32: follow recent changes.
-
-Fri Mar 29 14:44:05 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fflush): DRY patch from /Christoph applied.
-
-Thu Mar 28 18:58:13 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): reflect user defined $CC in
-	  config.status.
-
-Thu Mar 28 18:03:51 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/strscan.c: add taint check.
-
-	* ext/strscan/strscan.c: #getch/#get_byte should set regexp
-	  registers.
-
-	* ext/strscan/strscan.c: remove useless #include directive.
-
-	* ext/strscan/strscan.c: refactor struct strscanner.
-
-Thu Mar 28 14:51:38 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_addrinfo): should specify socktype
-	  from outside.
-
-Wed Mar 27 17:04:30 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_binmode): should call next_argv() to initialize ARGF.
-
-	* io.c (argf_filename): ditto.
-
-	* io.c (argf_file): ditto.
-
-Wed Mar 27 14:47:32 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (READ_DATA_PENDING): configure.in has supported for uClibc,
-	  so remove uClibc stuff.
-
-Wed Mar 27 13:14:43 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_sysseek): new method based on a patch from Aristarkh
-	  A Zagorodnikov <xm@bolotov-team.ru>. [new]
-
-	* io.c (READ_DATA_PENDING): use !feof(fp) for default behavior.
-
-Tue Mar 26 20:28:50 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: HTTP.get accepts URI.
-
-	* lib/net/http.rb: new method HTTP.get_uri.
-
-	* lib/net/http.rb: add some HTTP 1.1 response codes.
-
-Tue Mar 26 20:25:28 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* doc/net/protocol.rd.ja, smtp.rd.ja, pop.rd.ja: removed.
-
-	* MANIFEST: remove doc/net/* entries.
-
-Tue Mar 26 18:45:15 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (FILE_READPTR): check bufread instead of bufend
-	  for uClibc.
-
-	* ext/extmk.rb.in (arg_config): should use Shellwords::shellwords.
-
-Tue Mar 26 01:56:33 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): while/until statement modifiers to "begin"
-	  statement now work as "do .. while" even when begin statement
-	  has "rescue" or "ensure" [new].
-
-	* parse.y (bodystmt): rescue/ensure is allowed at every bodies,
-	  i.e. method bodies, begin bodies, class bodies[new], and module
-	  bodies[new].
-
-Mon Mar 25 22:10:04 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_addrinfo): should specify ai_socktype
-	  for getaddrinfo hints.
-
-Mon Mar 25 17:18:48 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* dir.c (rb_push_glob): local variable 'maxnest' was
-	  uninitialized.
-
-Mon Mar 25 16:53:30 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_abort): embed aborting message into exception
-	  object [new].
-
-	* eval.c (terminate_process): utility function for exit and abort.
-
-Tue Mar 26 14:04:47 2002  okabe katsuyuki <HGC02147@nifty.ne.jp>
-
-	* win32/mkexports.rb: support VC++.NET.
-
-Tue Mar 26 14:00:17 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/bigfloat/bigfloat.c: Fix the initializer's function name
-	  according to the new library name. (pointed out by nobu)
-
-Tue Mar 26 11:12:01 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/fileutils.rb: new file.
-
-Tue Mar 26 03:23:50 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (pp): return nil like p.
-
-Tue Mar 26 01:48:01 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/bigfloat/extconf.rb: Downcase the library name. (BigFloat.so
-	  -> bigfloat.so)
-
-	* ext/bigfloat/bigfloat.c (BigFloat_inspect): Alter the inspect
-	  format not to look like an array. (pointed out by akr)
-
-	* ext/bigfloat/bigfloat.c (BigFloat_hash): Implement BigFloat#hash.
-
-	* ext/bigfloat/bigfloat.c (BigFloat_dump, BigFloat_load):
-	  Support marshaling.
-
-Tue Mar 26 00:38:11 2002  Tanaka Akira  <akr@m17n.org>
-
-	* configure.in (FILE_READPTR): check _p for 4.4BSD.
-
-Mon Mar 25 23:39:25 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* configure.in (FILE_READPTR): new.  for IO#gets improvement.
-
-	* io.c (READ_DATA_PENDING_PTR): ditto.
-
-	* io.c (remain_size): separated from read_all().
-
-	* io.c (read_all): argument changed.
-
-	* io.c (appendline): new.  get a line and append to string.
-
-	* io.c (swallow): new.  swallow continuous line delimiters.
-
-	* io.c (rb_io_getline_fast): add delimiter argument.
-
-	* io.c (rb_io_getline): performance improvement.
-
-Mon Mar 25 19:30:25 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in (arg_config): get rid of single quotes
-	  for autoconf 2.53.
-
-Mon Mar 25 17:49:41 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* regex.c (mbc_startpos_func): VC6 seems to be unable to
-	  understand forward declaration for static variables.
-
-	* dir.c (rb_push_glob): local variable 'maxnest' was
-	  uninitialized.
-
-Mon Mar 25 13:24:20 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (bsock_do_not_rev_lookup_set): should not be
-	  allowed when $SAFE > 3.
-
-	* eval.c (rb_thread_ready): THREAD_TO_KILL threads should not turn
-	  into THREAD_RUNNABLE on wakeup.
-
-	* eval.c (rb_thread_list): THREAD_TO_KILL threads should be in the
-	  list.
-
-	* eval.c (thgroup_list): ditto; by moving gid clearance from
-	  rb_thread_cleanup().
-
-Mon Mar 25 11:06:19 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* dln.c (dln_argv0): unused unless USE_DLN_A_OUT.
-
-	* regex.c (mbc_startpos_func): should be static.
-
-Sun Mar 24 12:19:09 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* dir.c (fnmatch): "*/bar" (with FNM_PATHNAME flag) does not
-	  match "foo/bar".
-
-Sun Mar 24 00:46:05 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* util.c (push_element): avoid warning for djgpp.
-
-Sat Mar 23 01:50:30 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): files on /proc filesystem with zero stat size,
-	  may have contents.
-
-Fri Mar 22 18:07:29 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (tcp_s_gethostbyname): refactored.
-
-	* ext/socket/socket.c (sock_s_gethostbyname): ditto.
-
-Fri Mar 22 16:46:54 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/extmk.rb.in: replace mkdir with mkpath to compile racc/cparse.
-
-Fri Mar 22 16:22:55 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* the VMS support patch submitted by Akiyoshi, Masamichi
-	  <Masamichi.Akiyoshi@jp.compaq.com> is merged.
-
-Fri Mar 22 16:27:24 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/racc/parser.rb: new file.
-
-	* ext/racc/MANIFEST, cparse.c, depend, extconf.rb: new files.
-
-	* lib/README: add racc/parser.rb.
-
-	* ext/Setup*: add racc/cparse.
-
-Fri Mar 22 15:04:03 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (exec_under): changing ruby_class is OK, but should not
-	  alter cbase.
-
-	* eval.c (yield_under_i): ditto.
-
-Fri Mar 22 15:44:38 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* ext/strscan/MANIFEST, strscan.c, depend, extconf.rb: new files.
-
-	* ext/Setup*: add strscan entry.
-
-Fri Mar 22 14:32:14 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: Protocol#start should return self.
-
-Fri Mar 22 14:14:21 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb: fix arguments to create exceptions.
-	  Patch from matt@lickey.com.  (ruby-bugs:PR#278)
-
-Fri Mar 22 13:51:11 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/bigfloat/.cvsignore, ext/bigfloat/MANIFEST: BigFloat 1.1.8
-	  has been imported.  Add .cvsignore and MANIFEST.
-
-Fri Mar 22 04:07:55 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* sprintf.c (rb_f_printf): discard meaningless prefix ".." for '%u'.
-
-Thu Mar 21 01:11:37 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): fix install path (prefix).
-
-Thu Mar 21 01:03:05 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/configsub.rb: latest autoconf style support.
-
-Wed Mar 20 22:16:25 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* mkconfig.rb: close duplicated $stdout before renaming rbconfig.rb.
-
-Wed Mar 20 21:54:17 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* win32/Makefile.sub: made variables configurable.
-
-	* win32/Makefile.sub (config.h): updates RUBY_PLATFORM from
-	  Makefile.
-
-	* win32/Makefile.sub (config.status): ditto. and use recent
-	  autoconf format.
-
-	* win32/Makefile.sub (clean): separate ext and local clean up.
-
-	* win32/Makefile.sub (distclean): ditto.
-
-	* win32/config.status.in: no longer used.
-
-Wed Mar 20 20:12:35 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* variable.c (rb_const_list): a temporary table must be freed.
-
-Wed Mar 20 19:44:09 2002  Tanaka Akira  <akr@m17n.org>
-
-	* mkconfig.rb: don't touch rbconfig.rb if there is a trouble.
-
-Wed Mar 20 16:05:37 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): should check receiver only once.
-
-	* eval.c (is_defined): should handle NODE_NEWLINE.
-
-Wed Mar 20 11:29:25 2002  Aristarkh A Zagorodnikov  <xm@xml-objects.com>
-
-	* file.c (rb_file_s_expand_path): memory leak fixed.
-
-Wed Mar 20 00:36:43 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* util.c (ruby_getcwd): the content of buf is uncertain and must
-	  not be printed when getcwd(buf, size) has failed.
-
-Mon Mar 18 22:19:52 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/stringio/stringio.c (check_modifiable): wrong declaration.
-
-Mon Mar 18 18:04:05 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/digest: add depend file.
-
-	* ext/digest/md5: ditto.
-
-	* ext/digest/rmd160: ditto.
-
-	* ext/digest/sha1: ditto.
-
-	* ext/digest/sha2: ditto.
-
-	* ext/iconv/MANIFEST: ditto.
-
-	* ext/stringio/MANIFEST: ditto.
-
-	* ext/syslog: ditto.
-
-Mon Mar 18 17:18:06 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_f_abort): should not bypass cleanup.
-
-	* ext/stringio/stringio.c (check_modifiable): void function.
-
-Mon Mar 18 12:52:01 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/iconv/extconf.rb: workaround for GNU libiconv.
-
-Mon Mar 18 10:55:03 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (parse_string): part of multi-byte sequence must not
-	  match to paren.
-
-	* parse.y (parse_qstring): ditto.
-
-	* parse.y (parse_quotedwords): ditto.
-
-	* parse.y (str_extend): handle multi-byte characters.
-
-Mon Mar 18 10:31:20 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* enum.c (enum_find): catch a value before recycle.
-
-	* enum.c (enum_all): ditto.
-
-	* enum.c (enum_any): ditto.
-
-	* enum.c (enum_min): ditto.
-
-	* enum.c (enum_max): ditto.
-
-Sun Mar 17 20:08:04 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/iconv/depend: added.
-
-	* ext/stringio/depend: added.
-
-Sat Mar 16 22:43:53 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* missing/fileblocks.c: add for autoconf.
-
-Sat Mar 16 15:30:40 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_search): should clear last_match if pos is out of
-	  string range.
-
-	* string.c (rb_str_index_m): ditto.
-
-	* string.c (rb_str_rindex): ditto.
-
-Sat Mar 16 09:04:58 2002  Koji Arai <JCA02266@nifty.ne.jp>
-
-	* enum.c (enum_inject): use the first iterated element as the
-	  initial value when omitted.
-
-	* enum.c (inject_i): ditto.
-
-	* enum.c (Init_Enumerable): Enumerable#inject now takes variable
-	  count arguments.
-
-Fri Mar 15 19:47:31 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* win32/win32.c (StartSockets): remove duplicated lines.
-
-Fri Mar 15 17:44:08 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* bignum.c, intern.h (rb_ull2big, rb_ll2big, rb_ull2inum, rb_ll2inum,
-	  big2ull, rb_big2ull, rb_big2ll): use LONG_LONG macro instead of
-	  long long.
-
-	* numeric.c, intern.h, ruby.h (rb_num2ll, rb_num2ull): ditto.
-
-	* ruby.h: use _I64_MAX and _I64_MIN if they are defined (for VC++).
-
-Fri Mar 15 14:02:43 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/iconv/iconv.c: fixed document, Iconv#new is no longer an
-	  iterator. thanks to Tanaka Akira <akr@m17n.org>.
-
-Thu Mar 14 22:17:45 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/iconv: imported.
-
-Thu Mar 14 16:42:37 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_define_class): should handle autoload.
-
-	* class.c (rb_define_module): ditto.
-
-Thu Mar 14 16:18:12 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: autoconf 2.53 support. use AC_LIBOBJ.
-
-Thu Mar 14 00:29:12 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_match): should clear $~ if operand is nil.
-
-	* re.c (rb_reg_match2): ditto.
-
-Thu Mar 14 12:32:59 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/stringio/stringio.c: fixed frozen string bug.  ungetc no
-	  longer raises on readonly stream unless modifies actually.
-
-Thu Mar 14 08:57:41 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* dir.c (rb_push_glob): avoid SEGV when a block given.
-
-Thu Mar 14 00:16:02 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* string.c (rb_str_subpat_set): must make str independent after
-	  rb_reg_search() matched.
-
-Wed Mar 13 19:05:15 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* dir.c: FNM_PERIOD is obsoleted and FNM_DOTMATCH is introduced
-	  instead, which has the opposite meaning of FNM_PERIOD.
-
-	* dir.c: Dir::glob now accepts optional FNM_* flags via the second
-	  argument, whereas Dir::[] doesn't.
-
-Wed Mar 13 18:36:55 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/getopts.rb: single_options can be nil[*], and is not not
-	  optional. ([*]Pointed out by gotoken)
-
-Wed Mar 13 17:23:46 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure: merge Jonathan Baker's large file support patch
-	  [ruby-talk:35316], with read_all patch in [ruby-talk:35470].
-
-Wed Mar 13 04:06:48 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_abort): optional message argument that be printed
-	  on termination.
-
-Tue Mar 12 17:12:06 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb: don't complete domains for absolute FQNs.
-
-Mon Mar 11 23:08:48 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/tsort.rb: new file.
-
-Mon Mar 11 21:03:37 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/stringio: new.
-
-Mon Mar 11 18:03:37 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): '\0111' should be '\011' plus '1',
-	  since octal literals are formed by three digits at most.
-
-Mon Mar 11 14:44:38 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): module inclusion using extend() should
-	  also be detected.
-
-	* eval.c (rb_eval_cmd): cbase should not be NULL; it should be
-	  either ruby_wrapper or Object.
-
-Sun Mar 10 02:18:22 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* enum.c (enum_each_with_index): should return self.
-
-	* process.c (proc_setpgrp): should return value for non-void function.
-
-	* process.c (proc_getpgid): should raise exception if getpgid() return -1.
-
-	* string.c (rb_str_ljust): should return a duplicated string.
-
-	* string.c (rb_str_rjust): ditto.
-
-	* string.c (rb_str_center): ditto.
-
-Sat Mar  9 08:45:58 2002  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/extconf.rb (have_struct_member): don't print checked
-	  result.
-
-Fri Mar  8 12:19:15 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/resolv.rb: use its own thread group for background threads.
-
-Fri Mar  8 02:21:32 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (cvar_cbase): utility function to find innermost non
-	  singleton cbase.
-
-	* eval.c (is_defined): adopt new cvar behavior.
-
-	* eval.c (rb_eval): ditto.
-
-	* eval.c (assign): ditto.
-
-Thu Mar  7 20:08:25 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* gc.c (rb_source_filename): added. holds unique strings for file
-	  names with GC space.
-
-	* gc.c (rb_gc_mark): mark source file name.
-
-	* gc.c (gc_sweep): ditto.
-
-	* gc.c (Init_GC): initialize source file name table.
-
-	* intern.h (rb_source_filename): added.
-
-	* eval.c (rb_eval_string): use rb_source_filename().
-
-	* parse.y (yycompile): ditto.
-
-	* ruby.c (proc_options): ditto.
-
-	* ruby.c (load_file): ditto.
-
-	* ruby.c (ruby_script): ditto.
-
-	* ruby.c (ruby_prog_init): ditto.
-
-Wed Mar  6 17:58:08 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dln.c (dln_load): use LoadLibrary instead of LoadLibraryEx.
-
-Wed Mar  6 16:50:37 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_mod_clone): should not call rb_obj_clone(), since
-	  Module does not provide "allocate".
-
-	* class.c (rb_singleton_class): should create new singleton class
-	  if obj is a class or module and attached object is different,
-	  which means metaclass of singleton class is sought.
-
-	* time.c (time_s_alloc): now follows allocation framework.
-
-Tue Mar  5 05:56:29 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/getopts.rb: Rewrite to fix some bugs and complete features.
-	  - Accept options with the colon in the first argument;
-	    getopts("a:bcd:") is equivalent to getopts("bc", "a:", "d:").
-	  - Do not discard the argument that caused an error.
-	  - Do not discard '-', which commonly stands for stdin or stdout.
-	  - Allow specifying a long option with a value using '='.
-	    (command --long-option=value)
-	  - Stop reading options when it meets a non-option argument.
-
-Mon Mar  4 13:19:18 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in (dir_config): Sync with mkmf.rb: Fix a bug where
-	  --with-xx-{include,lib} is ignored when --with-xx-dir is
-	  specified.
-
-Mon Mar  4 00:09:55 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should initialize outer class variables from
-	  methods in singleton class definitions.
-
-	* eval.c (assign): ditto.
-
-Fri Mar  1 11:29:10 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/{addinfo.h,getaddrinfo.c} (gai_strerror): add const
-	  qualifier only for uClibc.
-
-Fri Mar  1 11:22:51 2002  Amos Gouaux  <amos+ruby@utdallas.edu>
-
-	* lib/net/imap.rb: added document.
-
-	* lib/net/imap.rb (getquotaroot): new method.
-
-	* lib/net/imap.rb (setacl): remove the rights if the rights
-	  parameter is nil.
-
-	* lib/net/imap.rb (getacl): return an array of MailboxACLItem.
-
-Fri Mar  1 06:25:49 2002  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/extconf.rb (have_struct_member): new method.
-	  check msg_control and msg_accrights in struct msghdr.  check
-	  sys/uio.h.
-
-	* ext/socket/socket.c: include sys/uio.h if available.
-	  (thread_read_select): new function.
-	  (unix_send_io): ditto.
-	  (unix_recv_io): ditto.
-	  (unix_s_socketpair): ditto.
-	  (Init_socket): define UNIXSocket#send_io, UNIXSocket#recv_io,
-	  UNIXSocket.socketpair and UNIXSocket.pair.
-
-	* dln.c (dln_load): fix typo.
-
-Wed Feb 27 16:30:50 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_include): load modules in argument order.
-
-	* st.c (st_init_table_with_size): num_bins should be prime numbers
-	  (no decrement).
-
-	* st.c (rehash): ditto.
-
-Wed Feb 27 13:18:49 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* io.c (READ_DATA_PENDING): uClibc support.
-
-	* random.c (rand_init): ditto.
-
-	* ext/socket/{addinfo.h,getaddrinfo.c} (gai_strerror): ditto.
-
-Wed Feb 27 07:05:17 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha2/sha2.c: Merge from rough.  Fix a couple of
-	  off-by-one errors in Aaron Gifford's code.
-
-	  Obtained from:  KAME via FreeBSD
-	  KAME PR:        393
-	  FreeBSD PR:     kern/34242
-
-Wed Feb 27 03:36:47 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* ext/dbm/dbm.c (fdbm_select): 1.7 behavior.
-
-	* ext/gdbm/gdbm.c (fgdbm_select): ditto.
-
-	* ext/sdbm/sdbm.c (fsdbm_select): ditto.
-
-	* ext/dbm/dbm.c (fdbm_delete): adopt Hash#delete behavior.
-
-	* ext/sdbm/sdbm.c (fsdbm_delete): ditto.
-
-	* ext/gdbm/gdbm.c: need not to dup key to the block.
-
-	* ext/sdbm/sdbm.c : replace RuntimeError with SDBMError.
-
-Tue Feb 26 21:34:07 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* bignum.c (rb_big_2comp): void function cannot return any value.
-
-Tue Feb 26 16:52:12 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_missing): NoMethod error messages for true, false,
-	  nil must respond visibility like for other objects.
-
-Tue Feb 26 15:41:30 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): call trace_func for if/while conditions.
-
-	* marshal.c (r_object): separate r_regist from proc calling.
-
-Tue Feb 26 11:25:50 2002  akira yamada  <akira@arika.org>
-
-	* lib/uri/generic.rb: merge0 should return [oth, oth] if oth is
-	  absolute URI.
-
-	* lib/uri/generic.rb: registry part must not be allowed for any
-	  schemes for the Internet. (RFC2396, section 3.2.2 and 3.2.1.)
-
-Mon Feb 25 21:22:41 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/syslog.c: Merge from rough.  Use SafeStringValue().
-
-Mon Feb 25 21:12:08 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/syslog.c: Merge from rough.  Turn Syslog into a
-	  module keeping backward compatibility intact.
-
-Mon Feb 25 19:35:48 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* sample/test.rb (system): test with scripts under the source
-	  directory.
-
-Mon Feb 25 15:14:01 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (method_inspect): should not dump core for unbound
-	  singleton methods.
-
-	* object.c (rb_mod_to_s): better description.
-
-Mon Feb 25 13:32:13 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* lib/shell.rb (Shell::expand_path): relative to @cwd.
-
-Mon Feb 25 06:30:11 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* hash.c (env_select): should path the assoc list.
-
-Sun Feb 24 17:20:22 2002  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/*/*.h: Merge from rough.
-	  - Avoid namespace pollution. (MD5_* -> rb_Digest_MD5_*, etc.)
-
-Sat Feb 23 21:12:13 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_syswait): thread kludge; should be fixed to
-	  support native thread.
-
-Fri Feb 22 21:20:53 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: set read_timeout dynamically.
-
-	* lib/net/http.rb: @@newimpl is always true in the main trunk.
-
-	* lib/net/http.rb: HTTP.port -> default_port
-
-	* lib/net/http.rb: HTTPResponse.read_response_status ->
-	  read_status_line
-
-Fri Feb 22 19:56:15 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/config.status.in: set LIBRUBY_SO.
-
-Fri Feb 22 03:34:38 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (get2comp): need to specify to carry or not.
-
-	* io.c (rb_io_inspect): embed path info.
-
-Fri Feb 22 11:30:01 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/prettyprint.rb: FillGroup implemented.
-
-Thu Feb 21 21:40:18 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* ext/extmk.rb.in (create_makefile): remove unnecessary -L option from
-	  LIBS macro.
-
-Thu Feb 21 02:49:12 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* pack.c (pack_pack): wrong # comment treatment.
-
-	* pack.c (pack_unpack): ditto.
-
-Wed Feb 20 15:15:03 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* intern.h: prototypes; rb_io_addstr(), rb_io_printf(),
-	  rb_io_print(), rb_io_puts()
-
-	* io.c (rb_io_addstr): make extern.
-
-	* io.c (rb_io_printf): ditto.
-
-	* io.c (rb_io_print): ditto.
-
-	* io.c (rb_io_puts): ditto.
-
-Wed Feb 20 13:41:35 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* io.c (rb_io_close): return Qnil.
-
-Wed Feb 20 12:41:59 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_any_cmp): should handle Qundef in keys.
-
-	* eval.c (remove_method): should not remove a empty method to
-	  implement "undef".
-
-	* eval.c (rb_eval): should allow singleton class def for
-	  true/false/nil.
-
-Tue Feb 19 21:43:32 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: rename Protocol.port to default_port.
-
-	* lib/net/smtp.rb: ditto.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/http.rb: ditto.
-
-	* lib/net/protocol.rb: rename BufferedSocket class to
-	  InternetMessageIO.
-
-	* lib/net/smtp.rb: ditto.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/http.rb: ditto.
-
-	* lib/net/protocol.rb: rename InternetMessageIO#write_pendstr to
-	  write_message.
-
-	* lib/net/smtp.rb: ditto.
-
-	* lib/net/protocol.rb: new method
-	  InternetMessageIO#through_message.
-
-	* lib/net/smtp.rb: ditto.
-
-	* lib/net/protocol.rb: rename InternetMessageIO#read_pendstr to
-	  read_message_to.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/protocol.rb: rename InternetMessageIO#read_pendlist to
-	  each_list_item
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/protocol.rb: Now block size is 1024.
-
-	* lib/net/smtp.rb: new methods SMTP#esmtp? and #esmtp=.
-
-	* lib/net/http.rb: Using singleton method syntax instead of
-	  singleton class clause, to avoid behavior change of class
-	  variables in ruby 1.7.
-
-	* lib/net/http.rb: HTTPResponse class does not inherit from
-	  Net::Response.
-
-	* lib/net/http.rb: divide HTTP#connecting into
-	  {begin,end}_transport.
-
-	* lib/net/http.rb: unused class Accumulator removed.
-
-	* lib/net/http.rb: Net::HTTP reads response. not HTTPRequest.
-
-	* lib/net/http.rb: proxy related class-instance-variables are not
-	  initialized correctly.
-
-Tue Feb 19 20:20:12 2002  Ed Sinjiashvili  <edsin@swes.saren.ru>
-
-	* parse.y (str_extend): backslash escape was done wrong.
-
-Tue Feb 19 17:10:25 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (path_check_1): do not fail on world writable *parent*
-	  directories too.
-
-Tue Feb 19 15:51:41 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (path_check_1): do not warn on world writable *parent*
-	  directories.
-
-	* class.c (rb_include_module): should preserve ancestor order in
-	  the included class/module.
-
-Tue Feb 19 14:45:32 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (path_check_1): should check directory sticky bits.
-
-	* process.c (security): need not to warn twice.
-
-	* marshal.c (r_object): complete restoration before calling
-	  r_regist().
-
-Tue Feb 19 14:24:36 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): operators in the "op" rule should make
-	  lex_state EXPR_ARG on EXPR_FNAME and EXPR_DOT.
-
-Tue Feb 19 13:38:10 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval_string_wrap): should hide the toplevel local
-	  variable bindings by PUSH_SCOPE().
-
-Tue Feb 19 13:21:51 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* regex.c: fix prototypes of xmalloc(), xcalloc() and xrealloc().
-
-Tue Feb 19 13:16:08 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* io.c (rb_io_ungetc): don't fail pushed EOF back.
-
-Mon Feb 18 20:48:40 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* pack.c (pack_pack): avoid infinite loop at comment.
-
-	* pack.c (pack_unpack): ditto.
-
-Mon Feb 18 14:06:28 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* misc/ruby-mode.el (ruby-block-hanging-re): rescue block was too
-	  indented.
-
-Mon Feb 18 13:56:44 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (expr_value, arg_value, primary_value): value_expr()
-	  check in place.
-
-	* eval.c (block_pass): "&nil" should clear block given.
-
-Mon Feb 18 02:05:56 2002  Wolfgang Jahrling <wolfgang@pro-linux.de>
-
-	* dir.c (push_braces): remove MAXPATHLEN dependency.
-
-	* dir.c (dir_s_globd): ditto.
-
-	* dln.c (init_funcname): ditto.
-
-	* dln.c (load_1): ditto.
-
-	* dln.c (dln_load): ditto.
-
-	* configure.in: add GNU/Hurd switches.
-
-Fri Feb 15 17:44:26 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): allows comment in template strings.
-
-	* pack.c (pack_unpack): ditto.
-
-Sun Feb 17 23:41:37 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* mkconfig.rb (Config::expand): expand ${} too.
-
-	* ext/extmk.rb.in (try_link0): expand command.
-
-	* ext/extmk.rb.in (try_cpp): ditto.
-
-	* ext/extmk.rb.in (extmake): default $LIBPATH to $libdir
-
-Sun Feb 17 21:39:24 2002  Tetsuya Watanabe  <tetsuya.watanabe@nifty.com>
-
-	* ext/digest/md5/md5init.c (Init_md5): rb_cvar_declare() is
-	  replaced by rb_cvar_set().
-
-	* ext/digest/rmd160/rmd160init.c (Init_rmd160): ditto.
-
-	* ext/digest/sha1/sha1init.c (Init_sha1): ditto.
-
-	* ext/digest/sha2/sha2init.c (Init_sha2): ditto.
-
-Sun Feb 17 18:10:09 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* class.c (rb_define_class): warn unless superclass is specified
-	  explicitly.
-
-	* class.c (rb_define_class_under): ditto.
-
-Thu Feb 16 02:11:08 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords): fontify
-	  instance/class/global variables start with '_'.
-
-Fri Feb 15 14:40:38 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): replace rb_cvar_declare() by rb_cvar_set().
-
-	* eval.c (assign): ditto.
-
-	* variable.c (rb_cvar_set): 4th argument (warn) added; define new
-	  class variable if it's not defined yet.
-
-	* variable.c (rb_cvar_declare): removed.
-
-Fri Feb 15 13:36:58 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_rshift): should properly convert the negative
-	  value to 2's compliment.
-
-Thu Feb 14 17:38:35 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y: avoid SEGV at OP_ASIGN to pseudo variable.
-
-Thu Feb 14 14:13:16 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (Init_Struct): should undefine "allocate" for Struct
-	  class (it's redefined in the subclasses).
-
-Wed Feb 13 17:58:12 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (stmt): local variable declaration order was changed
-	  since 1.6
-
-	* parse.y (arg): ditto.
-
-	* pack.c (pack_pack): add templates 'q' and 'Q'.
-
-	* pack.c (pack_unpack): ditto.
-
-	* bignum.c (rb_quad_pack): new utility function.
-
-	* bignum.c (rb_quad_unpack): ditto.
-
-Tue Feb 12 01:21:34 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (assignable): should emit CVASGN within the method
-	  body.
-
-Mon Feb 11 06:13:53 2002  Matt Armstrong  <matt@lickey.com>
-
-	* dir.c (dir_s_glob): should not warn even if no match found.
-
-Mon Feb 11 04:25:54 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): clean up class variable behavior.
-
-	* eval.c (assign): ditto.
-
-	* eval.c (is_defined): ditto.
-
-	* variable.c (rb_mod_class_variables): need not to call rb_cvar_singleton().
-
-	* variable.c (rb_cvar_singleton): removed.
-
-Mon Feb 11 00:10:41 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* regex.c (re_compile_fastmap): skip begpos.
-
-Sun Feb 10 16:52:53 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ruby.c (load_file): avoid SEGV on '#' only input.
-
-Fri Feb  8 23:07:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): singleton check should be moved from yycompile
-	  to here.
-
-	* eval.c (is_defined): check should be added here too.
-
-Fri Feb  8 05:31:48 2002  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: HTTP.Proxy should use self for proxy-class's
-	  super class.
-
-	* lib/net/http.rb: initialize HTTP.proxy_port by HTTP.port.
-
-Fri Feb  8 01:27:33 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yycompile): should inherit "in_single" if eval happened
-	  in a singleton method.
-
-	* eval.c (rb_eval): class variables from singleton methods defined
-	  within singleton class statement should work like ones defined
-	  by singleton def statements.
-
-Thu Feb  7 13:44:08 2002  akira yamada  <akira@arika.org>
-
-	* uri/common.rb (URI::join): new method.
-
-	* uri/generic.rb (Generic#merge): URI.parse("http://a/")+"b" should
-	  return "http://a/b" but it returned "http://a//b".
-
-	* uri/generic.rb (Generic#check_path): corrected error message,
-	  @path -> v
-
-Thu Feb  7 00:18:43 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_write): flag when buffered write is done.
-
-	* io.c (fptr_finalize): do not raise error on EBADF if write
-	  buffer is empty.
-
-Wed Feb  6 17:18:54 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* configure.in: keep old config.h unless changed.
-
-Wed Feb  6 13:28:53 2002  Amos Gouaux  <amos+ruby@utdallas.edu>
-
-	* lib/net/imap.rb: OpenSSL support.
-
-	* lib/net/imap.rb (setquota): unset quota if the second argument
-	  is nil.
-
-Wed Feb  6 13:05:11 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_readlines): avoid calling GetOpenFile() repeatedly.
-
-	* io.c (rb_io_each_line): ditto.
-
-	* io.c (argf_getline): ditto.
-
-	* process.c: should include <time.h> to get proper CLK_TCK.
-
-Wed Feb  6 02:10:30 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* io.c (fptr_finalize): ignore EBADF when f and f2 use same
-	  descriptor.
-
-Tue Feb  5 16:17:20 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (fptr_finalize): should raise error when fclose fails.
-
-	* eval.c (method_inspect): proper output format to distinguish
-	  methods and singleton methods.
-
-Mon Feb  4 22:44:58 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (rb_file_s_expand_path): should terminate.
-
-Mon Feb  4 15:38:29 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_class_real): should not follow ICLASS link
-
-	* variable.c (classname): should follow ICLASS link explicitly.
-
-	* eval.c (rb_call): ditto.
-
-Fri Feb  1 19:10:04 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* intern.h: prototypes for new functions; rb_cstr_to_inum(),
-	  rb_str_to_inum(), rb_cstr_to_dbl(), rb_str_to_dbl()
-
-	* bignum.c (rb_cstr_to_inum): changed from rb_cstr2inum(), and
-	  added argument badcheck to be consistent with parser. [new]
-
-	* bignum.c (rb_str_to_inum): ditto.
-
-	* bignum.c (rb_cstr2inum): wrapper of rb_cstr_to_inum() now.
-
-	* bignum.c (rb_str2inum): ditto.
-
-	* object.c (rb_cstr_to_dbl): float number parser. [new]
-
-	* object.c (rb_str_to_dbl): ditto.
-
-	* object.c (rb_Float): use rb_cstr_to_dbl() for strict check.
-
-	* object.c (rb_Integer): use rb_str_to_inum() for strict check.
-
-	* string.c (rb_str_to_f): use rb_str_to_dbl() with less check.
-
-	* string.c (rb_str_to_i): use rb_str_to_inum() with less check.
-
-	* string.c (rb_str_hex): ditto.
-
-	* string.c (rb_str_oct): ditto.
-
-	* sprintf.c (rb_f_sprintf): ditto.
-
-	* time.c (obj2long): ditto.
-
-	* parse.y (yylex): use rb_cstr_to_inum() for strict check.
-
-Fri Feb  1 17:46:39 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* regex.c (mbc_startpos): become macro.
-
-	* regex.c (euc_startpos): added for improvement.
-
-	* regex.c (sjis_startpos): ditto.
-
-	* regex.c (utf8_startpos): ditto.
-
-Fri Feb  1 00:03:30 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_stat_inspect): print dev, rdev in hexadecimal.
-
-Thu Jan 31 20:45:33 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* lib/mkmf.rb (dir_config): prior --with flag.
-
-	* lib/mkmf.rb (arg_config): avoid special variables for
-	  font-lock-mode.
-
-Thu Jan 31 13:22:36 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb (File::Stat#pretty_print): print rdev_major and rdev_minor.
-
-Wed Jan 30 15:58:04 2002  K.Kosako  <kosako@sofnec.co.jp>
-
-	* regex.c (re_adjust_startpos): fix for SJIS and UTF-8.
-
-	* regex.c (mbc_startpos): ditto.
-
-Wed Jan 30 13:37:05 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_search): should set regs.allocated.
-
-Wed Jan 30 02:25:38 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* regex.c (re_adjust_startpos): search start of multibyte
-	  backward.
-
-	* regex.c (mbc_startpos): ditto.
-
-Tue Jan 29 17:59:20 2002  Tanaka Akira  <akr@m17n.org>
-
-	* file.c: `major' and `minor' macro needs sys/mkdev.h on SunOS 5.x.
-
-	* configure.in: add check for `sys/mkdev.h'.
-
-	* lib/pp.rb: don't print a mode File::Stat as decimal number.
-
-Mon Jan 28 19:16:58 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* array.c (rb_ary_fill): shouldn't yield unless block given.
-
-Mon Jan 28 18:33:18 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (yylex): strict check for numbers.
-
-Mon Jan 28 18:01:01 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_stat_rdev_major): added. [new]
-
-	* file.c (rb_stat_rdev_minor): added. [new]
-
-	* file.c (rb_stat_inspect): print mode in octal.
-
-Mon Jan 28 13:29:41 2002  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (is_defined): defined?(Foo::Baz) should check constants
-	  only, no methods.
-
-	* eval.c (is_defined): should not dump core on defined?(a::b)
-	  where a is not a class nor a module.
-
-Mon Jan 28 02:50:12 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): remove dup and clone from TrueClass,
-	  FalseClass, and NilClass.
-
-	* array.c (rb_ary_fill): Array#fill takes block to get the value to
-	  fill.
-
-Sat Jan 26 20:05:18 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_to_i): to_i(0) auto-detects base radix.
-
-	* array.c (rb_ary_initialize): fill by the block evaluation value
-	  if block is given.
-
-Fri Jan 25 17:48:43 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in (solaris): add '-shared' only for GNU ld.
-
-Fri Jan 25 17:16:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_include_module): detect cyclic module inclusion.
-
-Fri Jan 25 02:17:56 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_cleanup): need not to free thread stacks at
-	  process termination.
-
-	* array.c (rb_ary_fetch): use the block to get the default value
-	  if the block is given.
-
-	* eval.c (rb_thread_schedule): should check time only if BOTH
-	  WAIT_SELECT and WAIT_TIME.
-
-Thu Jan 24 11:49:05 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (umethod_bind): should update rklass field.
-
-	* hash.c (rb_hash_update): if a block is given, yields [key,
-	  value1, value2] to the block to resolve conflict.
-
-Thu Jan 24 05:42:01 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* string.c (rb_str_split_m): no need to consider KANJI
-	  characters, if the length of separator is 1 (byte).
-
-Wed Jan 23 16:07:31 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (Init_Array): remove Array#filter.
-
-Wed Jan 23 13:27:44 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_yield_0): restore source file/line after yield.
-
-Wed Jan 23 02:00:14 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_initialize): should accept zero argument.
-
-	* object.c (rb_mod_cmp): should raise ArgumentError if
-	  inheritance/inclusion relation between two classes/modules is
-	  not defined. [new]
-
-Tue Jan 22 17:45:23 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_fsync): new method. [new]
-
-Mon Jan 21 22:57:18 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* signal.c (ruby_signal): must define sighandler_t for every
-	  occasion.
-
-Mon Jan 21 08:25:30 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_stop): should not trace error handler.
-
-	* signal.c (install_sighandler): do not install sighandler unless
-	  the old value is SIG_DFL.
-
-	* io.c (io_write): should not raise exception on O_NONBLOCK io.
-
-	* dir.c (dir_set_pos): seek should return dir, pos= should not.
-
-Sat Jan 19 02:31:45 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): need not to clear method cache for NODE_CLASS,
-	  NODE_SCLASS.
-
-	* gc.c (obj_free): need not to clear method cache on class/module
-	  finalization.
-
-Fri Jan 18 23:38:03 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_fetch): index out of range raises exception
-	  unless optional second argument is specified.
-
-Fri Jan 18 17:32:09 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_new): block check moved from initialize to this
-	  method.
-
-	* io.c (rb_io_s_open): open should call initialize too. IO#for_fd
-	  also calls initialize. [new]
-
-Fri Jan 18 10:26:33 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (rb_sys_fail): replace INT2FIX() by INT2NUM() since
-	  errno value may not fit in Fixnum size on Hurd.
-
-	* error.c (set_syserr): ditto.
-
-Fri Jan 18 10:12:00 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (tcp_svr_s_open): fix typo.
-
-Fri Jan 18 02:27:48 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_s_glob): returns nil if block given.
-
-	* io.c (rb_io_each_byte): should return self.
-
-	* io.c (rb_io_close_m): close check added.
-
-	* dir.c (dir_seek): should return pos.
-
-Fri Jan 18 01:21:53 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (fixpos): orig may be (NODE*)1, which should not be
-	  dereferenced.
-
-Thu Jan 17 16:21:42 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): allow "retry" from within argument passed
-	  block. [new]
-
-	* eval.c (localjump_error): should preserve exit status in the
-	  exception object. [new]
-
-	* eval.c (proc_invoke): should raise exception for "break" if it's
-	  yielding, not calling. [new]
-
-	* eval.c (block_pass): should NOT raise exception for "break". [new]
-
-	* eval.c (block_pass): should allow block argument relay even in
-	  the tainted mode.
-
-Thu Jan 17 09:43:05 2002  TAKAHASHI Kaoru  <kaoru@kaisei.org>
-
-	* misc/ruby-mode.el (ruby-add-log-current-method): New function
-	for `add-log-current-defun-function'.
-
-Thu Jan 17 04:51:48 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: support subclassing by proper "initialize"
-	  calling convention. [new]
-
-Wed Jan 16 18:25:08 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c: primes should be primes.
-
-Wed Jan 16 12:29:14 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/timeout.rb (timeout): new optional argument to specify an
-	  exception class.
-
-	* lib/resolv.rb: use Resolv::ResolvTimeout for internal timeout to
-	  avoid problem with timeout of application.
-
-Wed Jan 16 11:12:30 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* object.c (rb_Float): remove underscores between digits.
-
-	* bignum.c (rb_cstr2inum): reject prefix followed by spaces only.
-
-	* class.c (rb_class_inherited): should use Object when no super
-	  class.
-
-Tue Jan 15 01:11:44 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): method defined? check should honor
-	  protected too.
-
-Mon Jan 14 13:06:02 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): should not pass tainted block, if $SAFE > 0.
-
-Sun Jan 13 09:31:41 2002  Koji Arai  <jca02266@nifty.ne.jp>
-
-	* variable.c (rb_mod_remove_cvar): should pass the char*.
-
-Fri Jan 11 05:06:25 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* class.c (rb_make_metaclass): [new]
-
-	* class.c (rb_define_class_id): use rb_make_metaclass(), don't
-	  call Class#inherited hook.
-
-	* class.c (rb_class_inherited): [new]
-
-	* class.c (rb_define_class): call Class#inherited hook here.
-
-	* class.c (rb_define_class_under): ditto after class path is set.
-
-	* class.c (rb_singleton_class): use rb_make_metaclass().
-
-	* eval.c (rb_eval): same as rb_define_class_under().
-
-	* intern.h: prototypes of rb_make_metaclass() and
-	  rb_class_inherited().
-
-	* object.c (rb_class_s_new): use rb_make_metaclass() and
-	  rb_class_inherited().
-
-	* object.c (Init_Object): use rb_make_metaclass().
-
-	* struct.c (make_struct): use rb_class_inherited().
-
-Thu Jan 10 19:15:15 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_add_method): should clear cache by id always.
-
-	* eval.c (rb_disable_super): no longer need to clear cache before
-	  rb_add_method().
-
-	* eval.c (rb_export_method): ditto.
-
-	* eval.c (rb_attr): ditto.
-
-	* eval.c (rb_undef): ditto.
-
-	* eval.c (rb_eval): ditto.
-
-	* eval.c (rb_mod_modfunc): ditto.
-
-	* eval.c (rb_mod_define_method): ditto.
-
-Thu Jan 10 11:42:47 2002  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/resource.rb: Modify copyright in resource script.
-
-Thu Jan 10 07:15:44 2002  takuma ozawa  <metal@mine.ne.jp>
-
-	* re.c (match_select): should propagate taintness.
-
-Thu Jan 10 00:54:57 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_set_default): Hash#default= should return the
-	  new value.
-
-Wed Jan  9 20:21:09 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* misc/ruby-mode.el (ruby-calculate-indent): indentation after
-	  comment at beginning of buffer failed.
-
-	* misc/ruby-mode.el (font-lock-defaults): unless XEmacs, set
-	  font-lock variables in ruby-mode-hook.
-
-Tue Jan  8 15:56:20 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_to_i): accepts optional base argument. [new]
-
-	* numeric.c (rb_fix2str): should not handle negative fixnum values
-	  int32 via calling sprintf() directly.
-
-Tue Jan  8 15:54:02 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_add_method): clear replaced method from the cache.
-
-Mon Jan  7 12:38:47 2002  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb (Time#xmlschema): new optional argument
-	  fractional_seconds to specify a number of digits of
-	  fractional part of the time.
-
-Sat Jan  5 13:18:11 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* range.c (range_member): beginning check was
-	  wrong. [ruby-talk:30252]
-
-Sat Jan  5 03:07:34 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_new2): NULL pointer check added.
-
-Sat Jan  5 00:19:12 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (yycompile): strdup()'ed twice.
-
-Fri Jan  4 18:29:10 2002  Michal Rokos  <m.rokos@sh.cvut.cz>
-
-	* class.c (rb_define_module_under): should locate predefined
-	  module using rb_const_defined_at().
-
-Fri Jan  4 17:23:49 2002  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* misc/ruby-mode.el (ruby-forward-string): forward a string. [new]
-
-	* misc/ruby-mode.el (ruby-parse-region): handle nested parentheses
-	  in a string and terminators in #{}.
-
-	* misc/ruby-mode.el (ruby-calculate-indent): ditto.
-
-Wed Jan  2 23:34:25 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): add -I. to CPPFLAGS.
-
-	* lib/mkmf.rb (create_makefile): srcdir support(.def and depend file).
-
-Wed Jan  2 11:51:56 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_f_system): abandon vfork.
-
-	* io.c (pipe_open): ditto.
-
-Tue Jan  1 02:16:48 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/curses/extconf.rb: add dir_config.
-
-	* Makefile.in (fake.rb): set RUBY_VERSION.
-
-Mon Dec 31 14:20:46 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (yycompile): always store copy of filename.
-
-	* parse.y (rb_compile_file): no longer need to strdup() here.
-
-Mon Dec 31 05:26:40 2001  Ferris McCormick  <fmccor@inforead.com>
-
-	* defines.h: sparc linux needs different FLUSH_REGISTER_WINDOWS
-
-Mon Dec 31 04:27:28 2001  Minero Aoki  <aamine@mx.edit.ne.jp>
-
-	* lib/net/protocol.rb: Protocol#start returns the return value of
-	  block.
-
-	* lib/net/protocol.rb: set timeout limit by default.
-
-	* lib/net/protocol.rb: new methods WriteAdapter#write, puts,
-	  print, printf.
-
-	* lib/net/http.rb: rename HTTP#get2 to request_get, post2 to
-	  request_post ...
-
-	* lib/net/smtp.rb: should not resolve HELO domain automatically.
-
-Sun Dec 30 00:59:16 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb (have_library): accept -lm
-	  unconditionally on mswin32/mingw32.
-
-Sat Dec 29 01:55:42 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_search): abandon stclass optimization.
-
-Fri Dec 28 14:39:05 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* array.c (rb_cmpint): fixed typo.
-
-Thu Dec 27 18:43:04 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* bignum.c (rb_cstr2inum): deny "0_".
-
-Thu Dec 27 01:54:02 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* bignum.c (rb_cstr2inum): allow "0\n" and so on.
-
-Wed Dec 26 19:24:21 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (rb_invalid_str): utility function to show inspect()'ed
-	  string.
-
-	* bignum.c (rb_cstr2inum): prints invalid strings in inspect()'ed
-	  format.
-
-	* object.c (rb_Float): ditto.
-
-Wed Dec 26 02:41:29 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_convert_type): no longer use rb_rescue().
-
-Tue Dec 25 18:32:16 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* re.c (rb_reg_search): initialize taint status of match object.
-
-Tue Dec 25 02:37:49 2001  Tanaka Akira  <akr@m17n.org>
-
-	* lib/pp.rb, lib/prettyprint.rb: new files.
-
-Tue Dec 25 02:11:17 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_convert_type): check method response check before
-	  invoking rb_rescue().
-
-	* object.c (rb_check_convert_type): ditto.
-
-Mon Dec 24 02:37:40 2001  Le Wang  <lewang@bigfoot.com>
-
-	* misc/ruby-mode.el (ruby-font-lock-syntactic-keywords):
-	  fix font-lock problem [ruby-talk:29296].
-
-Sat Dec 22 22:52:14 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_timeval): wrong cast to time_t.
-
-	* time.c (time_plus): ditto.
-
-Fri Dec 21 20:33:34 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* parse.y (str_extend): make up "#$;" handling.
-
-Fri Dec 21 16:18:17 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* dln.h, ruby.h, util.h: enable prototypes in C++.
-
-Fri Dec 21 15:12:41 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_plus): result should not be negative unless
-	  NEGATIVE_TIME_T is defined.
-
-	* time.c (time_new_internal): should check tv_sec overflow too.
-
-	* time.c (time_timeval): should check time_t range when time is
-	  initialized from float.
-
-	* time.c (time_plus): uses modf(3).
-
-Fri Dec 21 03:15:52 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_mod_define_method): must not convert Method to Proc.
-
-Fri Dec 21 01:17:57 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* lib/mkmf.rb (with_destdir): new.
-
-	* lib/mkmf.rb: prefix target directories with $(DESTDIR) all.
-
-	* lib/mkmf.rb: no need to mkdir $(libdir)
-
-Thu Dec 20 14:08:20 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: rename Net::Socket to Net::BufferedSocket
-
-Thu Dec 20 13:51:52 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* variable.c (rb_cvar_set): add frozen class/module check.
-
-	* variable.c (rb_cvar_declare): add frozen class/module check.
-
-Thu Dec 20 01:01:50 2001  takuma ozawa  <metal@mine.ne.jp>
-
-	* re.c (match_to_a): should propagate taint.
-
-	* re.c (rb_reg_s_quote): ditto.
-
-Wed Dec 19 16:58:29 2001  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/readline/readline.c: new methods
-	  Readline::basic_word_break_characters,
-	  Readline::basic_word_break_characters=,
-	  Readline::completer_word_break_characters,
-	  Readline::completer_word_break_characters=,
-	  Readline::basic_quote_characters,
-	  Readline::basic_quote_characters=,
-	  Readline::completer_quote_characters,
-	  Readline::completer_quote_characters=,
-	  Readline::filename_quote_characters,
-	  Readline::filename_quote_characters=.
-
-Wed Dec 19 14:05:00 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_define_method): define_method should follow
-	  default method visibility.
-
-	* eval.c (rb_attr): should warn if the default method visibility
-	  is "module_function" (can be error).
-
-	* eval.c (rb_mod_define_method): should define class/module method
-	  also if the visibility is "module_function".
-
-	* eval.c (rb_mod_define_method): should call hook method
-	  "method_added", and "singleton_method_added".
-
-Wed Dec 19 11:42:13 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* string.c: use RESIZE_CAPA for capacity change.
-
-Wed Dec 19 03:08:40 2001  Tanaka Akira  <akr@m17n.org>
-
-	* lib/time.rb: date.rb is not required anymore.
-
-	* lib/resolv.rb: fix document.  refine IPv6 regex.
-
-Tue Dec 18 23:24:53 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (Init_socket): add listen method to
-	  TCPServer and UNIXServer.
-
-Tue Dec 18 17:54:53 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* sample/test.rb: Hash#indexes -> Hash#select.
-
-Tue Dec 18 01:02:13 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_schedule): should not select a thread which is
-	  not yet initialized.
-
-Mon Dec 17 18:53:49 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* string.c (rb_str_replace): swap arguments of OBJ_INFECT.
-
-Mon Dec 17 16:52:20 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* intern.h: add prototypes.
-	  rb_gc_enable(), rb_gc_disable(), rb_gc_start(), rb_str_new5()
-	  rb_str_buf_append(), rb_str_buf_cat(), rb_str_buf_cat2(),
-	  rb_str_dup_frozen()
-
-	* ruby.h: added declaration.
-	  rb_defout, rb_stdin, rb_stdout, rb_stderr, ruby_errinfo
-
-	* rubyio.h: changed double include guard macro to RUBYIO_H.
-
-	* array.c (inspect_call): make static.
-
-	* eval.c (dvar_asgn): ditto.
-
-	* io.c (rb_io_close_read): ditto.
-
-	* lex.c (rb_reserved_word): ditto.
-
-	* ruby.c: (req_list_head, req_list_last): ditto.
-
-	* ruby.c (require_libraries): ditto.
-
-Mon Dec 17 15:41:24 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_plus): wrong boundary check.
-
-	* time.c (time_minus): ditto.
-
-Mon Dec 17 15:19:32 2001  Tanaka Akira  <akr@m17n.org>
-
-	* time.c: new method `gmtoff', `gmt_offset' and `utc_offset'.
-	  (time_utc_offset): new function.
-	  (Init_Time): bind above methods to `time_utc_offset'.
-
-	* time.c: 64bit time_t support.
-	  (time_s_at): use NUM2LONG instead of NUM2INT for tv_sec.
-	  (time_arg): initialize tm_isdst correctly.
-	  use long to initialize tm_year.
-	  (search_time_t): renamed from `make_time_t'.
-	  (make_time_t): call `timegm' and `mktime' instead of `search_time_t'
-	  if available.
-	  (time_to_i): use LONG2NUM instead of INT2NUM.
-	  (time_localtime): check localtime failure.
-	  (time_gmtime): check gmtime failure.
-	  (time_year): use LONG2NUM instead of INT2FIX.
-	  (time_to_a): use long for tm_year.
-	  (time_dump): check tm_year which is not representable with 17bit.
-	  (time_load): initialize tm_isdst.
-
-	* configure.in: check existence of `mktime' and `timegm'.
-	  check existence of tm_gmtoff field of struct tm.
-	  fix negative time_t for 64bit time_t.
-
-	* missing/strftime.c: fix overflow by tm_year + 1900.
-
-	* lib/time.rb: use Time#utc_offset.
-
-Mon Dec 17 00:02:04 2001  Guy Decoux  <ts@moulon.inra.fr>
-
-	* variable.c (find_class_path): should initialize iv_tbl if it's
-	  NULL.
-
-Fri Dec 14 04:23:36 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: new method Net::POP3.APOP
-
-	* lib/net/http.rb: set default Content-Type to
-	  x-www-form-urlencoded (causes warning)
-
-	* lib/net/protocol.rb: remove Net::NetPrivate module.
-
-	* lib/net/smtp.rb: ditto.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/http.rb: ditto.
-
-Fri Dec 14 00:16:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_define_class): should return the existing class if
-	  the class is already defined and its superclass is identical to
-	  the specified superclass.
-
-	* class.c (rb_define_class_under): ditto.
-
-	* class.c (rb_define_module): should return the existing module if
-	  the module is already defined.
-
-Thu Dec 13 09:52:59 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_new_internal): avoid loop to calculate negative
-	  div, mod.
-
-	* time.c (time_cmp): should handle Bignums.
-
-Tue Dec 11 17:39:16 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* array.c (rb_ary_pop): should ELTS_SHARED flag check before
-	  REALLOC.
-
-Tue Dec 11 12:45:28 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_match_m): should convert an argument into
-	  regexp if it's a string.
-
-Tue Dec 11 03:40:23 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_select): Array#select(n,m,...) now works like
-	  Array#indexes(n,m,..). [new, experimental]
-
-	* hash.c (rb_hash_select): ditto.
-
-	* hash.c (env_select): ditto.
-
-	* re.c (match_select): ditto.
-
-	* struct.c (rb_struct_select): ditto.
-
-Tue Dec 11 03:17:19 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* object.c (rb_class_real): follow included modules.
-
-Mon Dec 10 23:37:51 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* util.h: change prototype of ruby_qsort() to accord with its
-	  definition.
-
-Mon Dec 10 20:30:01 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* gc.c (STR_ASSOC): use FL_USER3 instead of FL_USER2.
-
-Mon Dec 10 17:40:02 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* parse.y (str_extend): make up pushback call.
-
-Mon Dec 10 02:09:28 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_modify): should copy the internal buffer if the
-	  modifying buffer is shared.
-
-	* array.c (ary_make_shared): make an internal buffer of an array
-	  to be shared.
-
-	* array.c (rb_ary_shift): avoid sliding an internal buffer by
-	  using shared buffer.
-
-	* array.c (rb_ary_subseq): avoid copying the buffer.
-
-Mon Dec 10 01:06:56 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (gettable): should freeze __FILE__ string.
-
-Sun Dec  9 18:06:26 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: calls on_connect before conn_command
-
-Sat Dec  8 23:27:44 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_puts): old behavior restored.  rationale: a) if you
-	  want to call to_s for arrays, you can just call print a, "\n".
-	  b) to_s wastes memory if array (and sum of its contents) is
-	  huge.  c) now any object that has to_ary is treated as an array,
-	  using rb_check_convert_type().
-
-Sat Dec  8 22:40:38 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_initialize): now accepts a block to calculate
-	  the default value. [new]
-
-	* hash.c (rb_hash_aref): call "default" method to get the value
-	  corresponding to the non existing key.
-
-	* hash.c (rb_hash_default): get the default value based on the
-	  block given to 'new'.  Now it takes an optional "key" argument.
-	  "default" became the method to get the value for non existing
-	  key.  Users may override "default" method to change the hash
-	  behavior.
-
-	* hash.c (rb_hash_set_default): clear the flag if a block is given
-	  to 'new'
-
-Sat Dec  8 02:29:54 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): undef Data.allocate, left Data.new.
-
-Fri Dec  7 19:12:14 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/smtp.rb: SMTP.new requires at least one arg.
-
-	* lib/net/pop.rb: POP.new requires at least one arg.
-
-	* lib/net/pop.rb: uses "raise *Error.new" instead of simple raise.
-
-	* lib/net/http.rb: HTTP.new requires at least one arg.
-
-	* lib/net/http.rb: changes implicit start algorithm.
-
-Fri Dec  7 15:49:39 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* ext/extmk.rb.in: ignore adding -Wl,-R to DLDFLAGS when the directory
-	  is $topdir.
-
-Fri Dec  7 13:58:58 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c (window_scrollok): use RTEST().
-
-	* ext/curses/curses.c (window_idlok): ditto.
-
-	* ext/curses/curses.c (window_keypad): ditto.
-
-	* ext/curses/curses.c (window_idlok): idlok() may return void on
-	  some platforms; so don't use return value.
-
-	* ext/curses/curses.c (window_scrollok): ditto for consistency.
-
-	* ext/curses/curses.c: replace FIX2INT() by typechecking NUM2INT().
-
-Fri Dec  7 09:51:00 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (str_extend): should not process immature #$x and
-	  #@x interpolation, e.g #@#@ etc.
-
-Fri Dec  7 03:21:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_sort_by): sort_by does not have to be stable always.
-
-	* enum.c (enum_sort_by): call qsort directly to gain performance.
-
-Thu Dec  6 18:52:28 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* ext/extmk.rb.in: add -Wl,-R flags to DLDFLAGS on netbsdelf.
-
-	* lib/mkmf.rb: ditto.
-
-Thu Dec  6 09:15:14 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_qsort): ruby_qsort(qs6) is now native thread safe.
-
-	* error.c (rb_sys_fail): it must be a bug if it's called when
-	  errno == 0.
-
-Wed Dec  5 23:36:56 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (WC2MBC1ST): should not pass through > 0x80 number in UTF-8.
-
-Wed Dec  5 20:05:18 2001  Florian Frank  <flori@ping.de>
-
-	* ext/socket/socket.c (bsock_send): should raise EWOULDBLOCK
-	  exception.
-
-	* ext/socket/socket.c (s_recvfrom): ditto.
-
-	* ext/socket/socket.c (s_accept): ditto.
-
-	* ext/socket/socket.c (udp_send): ditto.
-
-Tue Dec  4 17:43:10 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (DUPSETUP): new SETUP macro for duplication.
-
-	* time.c (time_dup): implement in Time class using DUPSETUP.
-
-	* time.c (time_getlocaltime): new method;  probably requires
-	  better name than getlocaltime. [new,experimental]
-
-	* time.c (time_getgmtime): ditto.
-
-	* array.c (rb_ary_dup): uses DUPSETUP.
-
-	* string.c (rb_str_dup): uses DUPSETUP.  now properly copies
-	  instance variables too.
-
-Tue Dec  4 03:49:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fread): EAGAIN/EWOULDBLOCK should not terminate and
-	  throw away the input.
-
-	* time.c (time_new_internal): underflow adjustment must not use
-	  negative div/mod.
-
-	* time.c (time_cmp): should consider tv_usec on non Fixnum number
-	  comparison.
-Sun Dec  9 23:00:54 2001  Keiju Ishitsuka <keiju@ishitsuka.com>
-	* matrix.rb: Vector#* bug. reported from Massimiliano Mirra
-	  <info@chromatic-harp.com>.
-
-Sun Dec  9 22:15:59 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* enum.c (enum_sort_by): should replace with last elements.
-
-Mon Dec  3 16:06:57 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/extconf.rb: remove -L/usr/local/lib.
-
-	* configure.in: add -Wl,-export-dynamic on NetBSD.
-
-Mon Dec  3 16:04:16 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* configure.in: not use X11BASE, since it's not always set.
-
-Mon Dec  3 13:53:49 2001  Tanaka Akira  <akr@m17n.org>
-
-	* time.c (rb_strftime): buffer length condition was wrong.
-
-	* time.c (time_strftime): should backup buf to the original
-	  buffer.
-
-Mon Dec  3 09:59:08 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_plus): must detect result overflow.
-
-	* time.c (time_minus): ditto.
-
-	* time.c (time_new_internal): round usec overflow and underflow
-	  here.
-
-	* time.c (time_plus): move operand overflow/underflow check to
-	  time_new_internal().
-
-	* time.c (time_minus): ditto.
-
-	* time.c (time_cmp): should consider tv_usec too.
-
-Mon Dec  3 03:32:22 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* configure.in: apply patch from NetBSD's pkgsrc (patch-aa).
-
-Sun Dec  2 22:01:52 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: use GCC, not without_gcc. remove without_gcc.
-
-	* ext/curses/extconf.rb: check for curses.h.
-
-	* ext/dbm/extconf.rb: check if $CFLAGS includes DBM_HDR.
-
-Sat Dec  1 12:13:20 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_gmtime): time_modify() should be called even if tm
-	  struct is not calculated yet.
-
-Fri Nov 30 17:02:55 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: set target_cpu to i386 on cygwin and mingw32.
-
-	* configure.in: default --enable-shared to yes on cygwin and mingw32.
-
-Fri Nov 30 00:25:28 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* README.EXT: Appendix B is duplicated.
-
-	* README.EXT.ja: ditto.
-
-Thu Nov 29 00:28:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_equal): object with to_str must be treated as a
-	  string.
-
-Wed Nov 28 18:46:28 2001  Ville Mattila  <mulperi@iki.fi>
-
-	* eval.c (rb_thread_select): should subtract timeofday() from
-	  limit, not reverse.
-
-Wed Nov 28 16:03:28 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* util.c (scan_hex): x is not a hexadecimal digit.
-
-Wed Nov 28 13:38:04 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_schedule): should treat the case that
-	  select(2) returns 0, if a thread is under both WAIT_SELECT and
-	  WAIT_TIME.  Jakub Travnik <J.Travnik@sh.cvut.cz> actually fixed
-	  this bug.
-
-Tue Nov 27 02:15:25 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_float): must distinguish -0.0 from 0.0.
-
-Mon Nov 26 20:57:24 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/Setup*, ext/syslog/*: import the "syslog" module from the
-	  rough ruby project.
-
-Mon Nov 26 16:14:42 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* gc.c (gc_mark_all): tweak mark order for little bit better scan.
-
-	* gc.c (rb_gc_mark): ditto.
-
-	* gc.c (rb_gc): ditto.
-
-Mon Nov 26 16:54:59 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/win32.c (mypopen): fixed that mypclose() didn't really close
-	  pipe.
-
-	* win32/win32.c (CreateChild): set STARTF_USESTDHANDLES flag only
-	  when some handles are passed.
-
-Mon Nov 26 16:31:28 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (sort_by_i): slight performance boost.
-
-Sun Nov 25 21:02:18 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* parse.y (str_extend): change types of second and third arguments
-	  from char to int.
-
-Thu Nov 22 20:15:28 2001  TAMURA Takashi  <sheepman@tcn.zaq.ne.jp>
-
-	* gc.c (gc_mark_rest): should call gc_mark_children(), not gc_mark().
-
-	* gc.c (rb_gc_mark): may cause infinite loop.
-
-Thu Nov 22 00:28:13 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (str_extend): should check nesting parentheses in #{}.
-
-Wed Nov 21 12:22:52 2001  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/cgi.rb: CGI#header: do not set Apache.request.status for
-	  Location: if Apache.request.status is already set.
-
-Wed Nov 21 02:24:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (pst_wstopsig): returns nil unless WIFSTOPPED() is
-	  non-zero.
-
-	* process.c (pst_wtermsig): returns nil unless WIFSIGNALED() is
-	  non-zero.
-
-	* process.c (pst_wexitstatus): returns nil unless WIFEXITED() is
-	  non-zero.
-
-Wed Nov 21 00:17:54 2001  Ville Mattila  <mulperi@iki.fi>
-
-	* eval.c (rb_thread_select): tv_sec and tv_usec should not be
-	  negative.
-
-	* signal.c (posix_signal): do not set SA_RESTART for SIGVTALRM.
-
-Tue Nov 20 21:09:22 2001  Guy Decoux  <ts@moulon.inra.fr>
-
-	* parse.y (call_args2): block_arg may follow the first argument in
-	  call_args2.
-
-Tue Nov 20 02:01:15 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (stack_check): should avoid stack length check during
-	  raising SystemStackError exception.
-
-Tue Nov 20 01:07:13 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (str_extend): should not terminate string interpolation
-	  with newlines in here-docs and newline terminated strings.
-
-Mon Nov 19 17:58:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_modfunc): should follow NODE_ZSUPER link; based
-	  on Guy Decoux's patch in [ruby-talk:25478].
-
-Mon Nov 19 16:09:33 2001  Tanaka Akira  <akr@m17n.org>
-
-	* string.c (rb_str_succ): there was buffer overrun.
-
-Mon Nov 19 14:14:58 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (str_extend): term can be any character.
-
-Mon Nov 19 04:58:42 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb (header): support for Apache. thanks to
-	  Shugo Maeda <shugo@ruby-lang.org>.
-
-Sun Nov 18 19:37:55 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y: needless conditionals.
-
-	* parse.y (parse_regx): parse error at unterminated regex /#{.
-	  (ruby-bugs-ja:PR#142)
-
-Sat Nov 17 12:37:39 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_unpack): should give length to utf8_to_uv().
-
-	* pack.c (utf8_to_uv): add length check.
-
-Sat Nov 17 01:41:52 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* massages: replace "wrong #" by "wrong number".
-
-	* marshal.c (w_float): output Infinity and NaN explicitly.
-
-	* marshal.c (r_object): support new explicit float format.
-
-	* eval.c (rb_thread_wait_for): select may cause ERESTART on
-	  Solaris.
-
-	* eval.c (rb_thread_select): ditto.
-
-Thu Nov 15 15:29:39 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* array.c (rb_ary_join): non-nil separator must be converted to
-	  String.  and separators' total length was wrong.
-
-Thu Nov 15 03:37:17 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* hash.c (ruby_setenv): remove USE_WIN32_RTL_ENV block since it's
-	  obsoleted.
-
-	* win32/win32.c, win32/win32.h: sort out #if 0 - #endif or others.
-
-Thu Nov 15 00:07:12 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_to_s): if rb_output_fs is nil, insert newlines
-	  between array elements (use rb_default_rs as newline literal)
-	  [experimental].
-
-Wed Nov 14 15:16:23 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* gc.c (init_mark_stack): no need to clear mark_stack.
-
-	* gc.c (gc_mark_all): need to handle finalizer mark.
-
-	* gc.c (gc_mark_rest): use MEMCPY instead of memcpy.
-
-	* gc.c (rb_gc_mark): earlier const check to avoid pusing special
-	  constants into mark stack.
-
-Wed Nov 14 01:12:07 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* win32/win32.c (waitpid): fix wait count.
-
-	* win32/win32.c (poll_child_status): rename from wait_child().
-
-Wed Nov 14 01:33:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_to_s): 'to_s' now takes optional argument to
-	  specify radix. [new]
-
-	* bignum.c (rb_big_to_s): ditto. [new]
-
-Tue Nov 13 19:50:30 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: do not override CC if set.
-
-Tue Nov 13 16:49:16 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/win32.c (mypopen): return error status instead of calling
-	  rb_sys_fail().
-
-	* win32/win32.c (do_spawn): ditto.
-
-Tue Nov 13 14:39:11 2001  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* signal.c (sighandle): should not re-register sighandler if
-	  POSIX_SIGNAL is defined.
-
-Tue Nov 13 12:55:59 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/win32.c (do_spawn): use CreateChild() instead of calling
-	  CreateProcess() directly. Original patches comes from Patrick Cheng.
-
-	* win32/win32.c (mypopen): ditto.
-
-	* win32/win32.c (mypclose): use rb_syswait() instead of waiting in this
-	  function.
-
-	* win32/win32.c (waitpid): use wait_child() instead of _cwait().
-
-	* win32/win32.c (CreateChild): added. [new]
-
-	* win32/win32.c (wait_child): added. [new]
-
-	* win32/win32.c (FindFirstChildSlot): added. [new]
-
-	* win32/win32.c (FindChildSlot): added. [new]
-
-	* win32/win32.c (FindPipedChildSlot): added. [new]
-
-	* win32/win32.c (CloseChildHandle): added. [new]
-
-	* win32/win32.c (FindFreeChildSlot): added. [new]
-
-Tue Nov 13 12:38:12 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* hash.c (envix): use GET_ENVIRON and FREE_ENVIRON to get environment
-	  variables list.
-
-	* hash.c (env_keys): ditto.
-
-	* hash.c (env_each_key): ditto.
-
-	* hash.c (env_values): ditto.
-
-	* hash.c (env_keys): ditto.
-
-	* hash.c (env_each_value): ditto.
-
-	* hash.c (env_each): ditto.
-
-	* hash.c (env_inspect): ditto.
-
-	* hash.c (env_to_a): ditto.
-
-	* hash.c (env_size): ditto.
-
-	* hash.c (env_empty_p): ditto.
-
-	* hash.c (env_has_value): ditto.
-
-	* hash.c (env_index): ditto.
-
-	* hash.c (env_to_hash): ditto.
-
-	* win32/win32.c (win32_getenv): use static buffer.
-
-	* win32/win32.c, win32/win32.h (win32_get_environ): get environment
-	  variables list. [new]
-
-	* win32/win32.c, win32/win32.h (win32_free_environ): free environment
-	  variables list. [new]
-
-Mon Nov 12 16:48:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (error_print): errat array may be empty.
-
-Mon Nov 12 01:30:37 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval_cmd): should not upgrade safe level unless
-	  explicitly specified by argument newly added.
-
-	* signal.c (sig_trap): should not allow tainted trap closure.
-
-	* variable.c (rb_f_trace_var): should not allow trace_var on safe
-	  level higher than 3.
-
-	* variable.c (rb_f_trace_var): should not allow tainted trace
-	  closure.
-
-Sun Nov 11 00:12:23 2001  TAMURA Takashi  <sheepman@tcn.zaq.ne.jp>
-
-	* gc.c: do not use static stack until system stack overflows.
-
-Sat Nov 10 03:57:09 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (eval): should call Exception#exception instead of
-	  calling rb_exc_new3() directly.
-
-	* error.c (exc_exception): set "mesg" directly to the clone.  it
-	  might be better to set mesg via some method for flexibility.
-
-Sat Nov 10 00:14:24 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (cvar_override_check): should print original module
-	  name, if 'a' is T_ICLASS.
-
-	* parse.y (yylex): float '1_.0' should not be allowed.
-
-	* variable.c (var_getter): should care about var as Qfalse
-	  (ruby-bugs#PR199).
-
-Fri Nov  9 13:50:06 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/config.status.in: make CFLAGS same as Makefile's one.
-
-Thu Nov  8 20:20:37 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_trap_eval): avoid annoying warning with signal.
-	  [ruby-talk:23225]
-
-	* eval.c (rb_call0): adjust caller source file/line while
-	  evaluating optional arguments.
-
-Thu Nov  8 18:41:58 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (cmpint): <=> or block for {min,max} may return bignum.
-
-	* array.c (sort_1): use rb_compint.
-
-	* array.c (sort_2): ditto.
-
-	* enum.c (min_ii): ditto.
-
-	* enum.c (min_ii): ditto.
-
-	* enum.c (max_i): ditto.
-
-	* enum.c (max_ii): ditto.
-
-Thu Nov  8 18:21:02 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (path_check_1): forgot to initialize 'p'.
-
-Thu Nov  8 14:52:15 2001  Tanaka Akira  <akr@m17n.org>
-
-	* mkconfig.rb: use String#dump to generate Ruby string literal.
-
-Thu Nov  8 15:46:54 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_eql): should override 'eql?'
-
-	* array.c (rb_ary_hash): should override 'hash' too.
-
-Tue Nov  6 14:38:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (security): always give warning for insecure PATH.
-
-	* dir.c (my_getcwd): do not rely on MAXPATHLEN.
-
-	* file.c (rb_file_s_readlink): ditto.
-
-	* file.c (path_check_1): ditto.
-
-Tue Nov  6 14:17:14 2001  Amos Gouaux <amos+ruby@utdallas.edu>
-
-	* lib/net/imap.rb (getquota_response): use astring for mailbox
-	  names.
-
-	* lib/net/imap.rb (getacl_response): ditto.
-
-Mon Nov  5 17:09:55 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): should not call rb_f_block_given_p().
-
-Sat Nov  3 23:33:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): should terminate string by NUL.
-
-Sat Nov  3 22:28:51 2001  Keiju Ishitsuka <keiju@ishitsuka.com>
-
-	* matrix.rb (Matrix#column_vectors, Matrix#row_vectors): ditto bug.
-	  this bug report and fix by tsutomu@nucba.ac.jp.
-
-	* forwardable.rb: change raise to Kernel::raise
-
-Sat Nov  3 10:11:57 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): better error message.
-
-Thu Nov  1 14:08:42 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_aref): idx may be a Bignum.
-
-	* numeric.c (fix_aref): negative index must return zero.
-
-Thu Nov  1 13:23:50 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_mark_children): should NOT treat last element of
-	  structs and arrays specially.
-
-Wed Oct 31 16:59:25 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (exec_under): should initialize ruby_frame->self;
-
-Wed Oct 31 15:09:28 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (POP_VARS): should not set DVAR_DONT_RECYCLE if _old
-	  ruby_vars is already force_recycled.
-
-Wed Oct 31 10:28:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc): handles mark stack overflow.
-
-	* gc.c (PUSH_MARK): use static mark stack, no more recursion.
-
-Wed Oct 31 02:44:06 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: CGI::Cookie::parse(): Ignore duplicate keys caused by
-	  Netscape bug.
-
-Tue Oct 30 18:21:51 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* win32/mkexports.rb: follow the change of rb_io_puts().
-
-Tue Oct 30 14:04:04 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): do smart chomp if $/ == '\n'. [new]
-
-	* io.c (rb_io_puts): don't treat Array specially.
-
-	* bignum.c (rb_big_cmp): should convert bignum to float.
-
-	* eval.c (rb_f_eval): can't modify untainted binding.
-
-Mon Oct 29 16:08:30 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): should preserve p0 value.
-
-Mon Oct 29 14:56:44 2001  Usaku Nakamura <usa@ruby-lang.org>
-
-	* intern.h (rb_protect_inspect): follow the change of array.c.
-
-	* eval.c (rb_exec_end_proc): follow the change of rb_protect().
-
-	* eval.c (method_proc, umethod_proc, rb_catch): cast the first
-	  parameter of rb_iterate() to avoid VC++ warning.
-
-	* range.c (range_step): ditto.
-
-	* ext/sdbm/init.c (fsdbm_update, fsdbm_replace): ditto.
-
-Mon Oct 29 07:57:31 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (str_extend): should allow interpolation of $-x.
-
-	* variable.c (rb_cvar_set): empty iv_tbl may cause infinite loop.
-
-	* variable.c (rb_cvar_get): ditto.
-
-	* variable.c (cvar_override_check): ditto.
-
-Sat Oct 27 23:01:19 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_eq): convert Bignum to Float, instead of
-	  reverse.
-
-Fri Oct 26 06:19:29 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_localtime): getting tm should not be prohibited for
-	  frozen time objects.
-
-	* time.c (time_gmtime): ditto.
-
-	* version.c (Init_version): freeze RUBY_VERSION,
-	  RUBY_RELEASE_DATE, and RUBY_PLATFORM.
-
-	* file.c (Init_File): freeze File::SEPARATOR, ALT_SEPARATOR and
-	  PATH_SEPARATOR.
-
-	* file.c (rb_stat_cmp): should check operand type before calling
-	  get_stat().
-
-Thu Oct 25 10:28:15 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval_cmd): should not invoke "call" with a block on
-	  any occasion.
-
-Wed Oct 24 03:25:31 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_aref): idx may be a Bignum.
-
-Tue Oct 23 01:21:19 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (proc_invoke): fix self switching in Proc#call
-	  (ruby-bugs-ja#PR108) and GC failure.  use Qundef instead of 0
-	  to direct not switching self.
-
-	* eval.c (call_trace_func): ditto.
-
-	* eval.c (call_end_proc): ditto.
-
-	* eval.c (proc_call): ditto.
-
-	* eval.c (proc_yield): ditto.
-
-Tue Oct 23 01:15:43 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* variable.c (rb_global_entry): reconstruct global variable
-	  aliasing (sharing global_entry->var with other global_entry).
-
-	* variable.c (undef_getter): ditto.
-
-	* variable.c (undef_setter): ditto.
-
-	* variable.c (val_setter): ditto.
-
-	* variable.c (mark_global_entry): ditto.
-
-	* variable.c (rb_define_hooked_variable): ditto.
-
-	* variable.c (rb_f_trace_var): ditto.
-
-	* variable.c (remove_trace): ditto.
-
-	* variable.c (rb_f_untrace_var): ditto.
-
-	* variable.c (rb_gvar_get): ditto.
-
-	* variable.c (trace_en): ditto.
-
-	* variable.c (rb_gvar_set): ditto.
-
-	* variable.c (rb_gvar_defined): ditto.
-
-	* variable.c (rb_alias_variable): ditto.
-
-Mon Oct 22 18:53:55 2001  Masahiro Tanaka  <masa@stars.gsfc.nasa.gov>
-
-	* numeric.c (num_remainder): a bug in Numeric#remainder.
-
-Mon Oct 22 15:21:55 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_exec_end_proc): END might be called within END
-	  block.
-
-	* class.c (rb_mod_clone): should not copy class name, since clone
-	  should remain anonymous.
-
-Fri Oct 19 23:40:37 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* variable.c (remove_trace): should not access already freed area.
-
-	* variable.c (rb_f_untrace_var): fix memory leak.
-
-Fri Oct 19 17:55:14 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* marshal.c (w_uclass): cloned class is not user
-	  class. (ruby-bugs-ja#PR103)
-
-	* marshal.c (r_object): Struct subclass couldn't
-	  load. (ruby-bugs-ja#PR104)
-
-Wed Oct 17 14:12:50 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* variable.c (alias_fixup): added. ad hoc support for ordinary
-	  global variable aliasing. when original entry is set, make the
-	  alias to refer directly as possible.
-
-	* variable.c (alias_getter, alias_setter): ditto.
-
-	* variable.c (rb_alias_variable): ditto. and no need to mark alias
-	  variables.
-
-	* variable.c (rb_gvar_defined): refer the original entry of an alias.
-
-Tue Oct 16 23:29:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): self in a block given to define_method now be
-	  switched to the receiver of the method.
-
-	* eval.c (proc_invoke): added new parameter to allow self
-	  switching.
-
-Tue Oct 16 21:38:15 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_f_missing): check stack level with rb_stack_check().
-
-	* eval.c (rb_call0): ditto.
-
-	* eval.c, intern.h (rb_stack_check): added. [new]
-
-Tue Oct 16 13:18:47 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* object.c (rb_mod_initialize): optional block with
-	  Module.new. [new] (from 2001-10-10)
-
-Tue Oct 16 00:07:06 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (yylex): disallow alpha-numeric and mbchar for
-	  terminator of %string.
-
-Mon Oct 15 18:00:05 2001  Pit Capitain  <pit@capitain.de>
-
-	* string.c (rb_str_index): wrong increment for non alphanumeric
-	  string.
-
-Mon Oct 15 05:23:02 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* sprintf.c (rb_f_sprintf): support "%B".
-
-Wed Oct 10 03:11:47 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_stat_clone): should copy internal data too.
-
-	* numeric.c (num_clone): Numeric should not be copied by clone.
-
-	* object.c (rb_obj_clone): should check immediate values.
-
-	* parse.y (command): `yield' should take command_args.
-
-	* parse.y (parse_quotedwords): %w(...) is not a string.
-
-Tue Oct  9 18:40:35 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* process.c (Init_process): activate the case NT.
-
-Tue Oct  9 17:08:00 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (thread_status_name): separated from
-	  rb_thread_inspect(). return string expression for thread status.
-
-	* eval.c (rb_thread_status, rb_thread_inspect): use
-	  thread_status_name().
-
-	* eval.c (rb_thread_priority_set): return the priority not but
-	  self.
-
-Sat Oct  6 23:07:08 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): NODE_MATCH3 was confusing left and right. sigh.
-
-Fri Oct  5 15:19:46 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_unique): should not dump anonymous class.
-
-Fri Oct  5 11:59:13 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (proc_s_new): revived.
-
-	* eval.c (Init_Proc): define Proc.new instead of Proc.allocate to
-	  inhibit from creating uninitialized Proc.
-
-Thu Oct  4 14:11:03 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): EALREADY is the equivalent
-	  for EINPROGRESS in ws2_32.lib.
-
-Wed Oct  3 20:11:06 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* re.c (rb_reg_s_alloc): avoid infinite recursion.
-
-Wed Oct  3 16:49:49 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/gdbm/gdbm.c (rb_gdbm_fetch): str is a VALUE now.
-
-Wed Oct  3 13:32:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object): better allocation type check for
-	  TYPE_UCLASS. usage of allocation framework is disabled for now.
-
-	* variable.c (rb_class_path): Module may have subclass.
-
-	* string.c (rb_str_update): should maintain original negative
-	  offset.
-
-	* string.c (rb_str_subpat_set): ditto
-
-	* string.c (rb_str_aset): ditto.
-
-	* re.c (rb_reg_nth_match): should check negative nth.
-
-	* re.c (rb_reg_nth_defined): ditto.
-
-Tue Oct  2 19:12:47 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/ftools.rb (catname): allow trailing '/' for the destination.
-
-Tue Oct  2 18:31:20 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should override existing class.
-
-Tue Oct  2 17:08:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_alloc): general instance allocation framework.
-	  use of NEWOBJ() is deprecated except within 'allocate' method.
-
-Tue Oct  2 08:04:52 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* marshal.c (r_object): TYPE_UCLASS check should be inversed.
-
-Mon Oct  1 19:18:54 2001  Tanaka Akira  <akr@m17n.org>
-
-	* ext/socket/socket.c (unix_addr): getsockname(2) may result len = 0.
-
-	* ext/socket/socket.c (unix_peeraddr): getpeername(2) may result
-	  len = 0.
-
-Mon Oct  1 09:59:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_subpat_set): support function for new argument
-	  pattern String#[re,offset] = val. [new]
-
-Sat Sep 29 02:30:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (POP_BLOCK): rb_gc_force_recycle() was called too much.
-	  Should not be called if SCOPE_DONT_RECYCLE is set.
-
-Wed Sep 26 22:21:52 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_aref_m): new argument pattern
-	  String#[re,offset]. [new]
-
-Wed Sep 26 19:02:39 2001  Guy Decoux  <ts@moulon.inra.fr>
-
-	* parse.y: allow 'primary[] = arg'
-
-Tue Sep 25 10:46:42 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* win32/win32.c (isInternalCmd): check return value of NtMakeCmdVector
-	  (Tietew <tietew@tietew.net>'s patch).
-
-Mon Sep 24 00:55:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_substr): should return an instance of
-	  receiver's class.
-
-	* string.c (rb_str_succ): ditto.
-
-	* array.c (rb_ary_subseq): ditto.
-
-	* array.c (rb_ary_initialize): Array.new([1,2,3]) => [1,2,3]. [new]
-
-Sat Sep 22 22:16:08 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_reverse): should return an instance of
-	  receiver's class.
-
-	* string.c (rb_str_times): ditto.
-
-	* array.c (rb_ary_times): ditto
-
-	* string.c (str_gsub): ditto.
-
-	* string.c (rb_str_ljust): ditto.
-
-	* string.c (rb_str_rjust): ditto.
-
-	* string.c (rb_str_center): ditto.
-
-Sat Sep 22 12:13:39 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (eval): retrieves file, line information from binding.
-
-Thu Sep 20 21:25:00 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (MATCH_DATA): access via rb_svar().
-
-Thu Sep 20 15:20:00 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c, intern.h (rb_svar): return reference to special variable
-	  from local variable index. [new]
-
-	* eval.c (rb_eval): use rb_svar() for NODE_FLIP{2,3}.
-
-	* parse.y (rb_(backref|lastline)_(get|set)): access via rb_svar().
-
-	* eval.c (proc_invoke): push dynamic variables.
-
-	* eval.c (rb_thread_yield): push special variables as dynamic
-	  variables($_, $~ and FLIP states).
-
-Thu Sep 20 15:20:00 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* intern.h, parse.y (rb_is_local_id): return true if the ID is
-	  local symbol. [new]
-
-	* parse.y (internal_id): make new ID for internal use. [new]
-
-	* parse.y (cond0): allocate internal ID for NODE_FLIP{2,3}.
-
-	* eval.c (rb_f_local_variables): use rb_is_local_id() to select
-	  visible local variables.
-
-Thu Sep 20 15:20:00 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_thread_start_0): SCOPE_SHARED is removed.
-
-	* eval.c, intern.h (rb_thread_scope_shared_p): removed. special
-	  variables are no longer shared by threads.
-
-	* re.c (rb_reg_search): MATCHDATA is no longer shared by threads.
-
-Tue Sep 18 11:44:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_init): String.new() => "" [new]
-
-Tue Sep 11 20:53:56 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_path): new method.
-
-	* dir.c (dir_initialize): wrap DIR into struct, along with path
-	  information.
-
-Sat Sep  8 07:13:42 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/net/telnet.rb: waitfor(): improvement. thanks to
-	  nobu.nakada@nifty.ne.jp
-
-Sat Sep  8 04:34:17 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_restore_context): save current value of
-	  lastline and lastmatch in the thread struct for later restore.
-
-	* eval.c (rb_thread_save_context): restore lastline and lastmatch.
-
-Fri Sep  7 11:27:56 2001  akira yamada  <akira@ruby-lang.org>
-
-	* numeric.c (flo_to_s): should handle negative float value.
-
-Fri Sep  7 09:44:44 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/net/telnet.rb: waitfor(): bug fix.
-
-Fri Sep  7 07:11:34 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: CGI#doctype(): bug fix (html4Fr).
-
-	* lib/net/telnet.rb, lib/cgi.rb: remove VERSION, RELEASE_DATE,
-	  VERSION_CODE, RELEASE_CODE. please use REVISION.
-
-	* lib/cgi.rb: CGI#header(): bug fix.
-
-	* lib/net/telnet.rb, lib/cgi.rb: concat --> +=
-
-Thu Sep  6 17:38:18 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* dir.c (dir_s_chdir): raise if environment variable HOME/LOGDIR
-	  not set.
-
-	* dir.c (glob_helper): avoid infinite loop on a file name with
-	  wildcard characters. (ruby-bugs#PR177)
-
-Thu Sep  6 14:25:15 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_s_hexdigest): remove a debug
-	  print.
-
-Thu Sep  6 13:56:14 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_base_s_digest,
-	  rb_digest_base_s_hexdigest): ensure that a string is given.
-
-Thu Sep  6 13:28:51 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/jcode.rb (_regexp_quote): fix quote handling, again.
-
-Thu Sep  6 07:28:56 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (rb_find_file_ext): add const qualifiers to ext.
-
-	* intern.h (rb_find_file_ext): ditto.
-
-Thu Sep  6 07:16:14 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/socket/socket.c (Init_socket): remove duplicating constants.
-
-Thu Sep  6 03:15:24 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_include_module): should check whole ancestors to
-	  avoid duplicate module inclusion.
-
-Wed Sep  5 20:02:27 2001  Shin'ya Adzumi  <adzumi@denpa.org>
-
-	* string.c (trnext): should check backslash before updating "now"
-	  position.
-
-Wed Sep  5 17:41:11 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/jcode.rb (_regexp_quote): fix quote handling.
-
-Tue Sep  4 01:03:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (Init_Regexp): to_s to be alias to inspect.
-
-Mon Sep  3 22:46:59 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): should support 'keyword='.
-
-Mon Sep  3 20:26:08 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* intern.h (rb_find_file_ext): changed from rb_find_file_noext().
-
-Mon Sep  3 15:12:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): should not adjust argc/argv if -e option
-	  is supplied.
-
-Mon Sep  3 14:11:17 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* error.c: unbreak the build on *BSD with gcc 3.0.1 by removing
-	  the conflicting declaration of sys_nerr for *BSD.
-
-Sat Sep  1 18:50:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): should not alter origargv[].
-
-	* ruby.c (set_arg0): long strings for $0 dumped core.
-
-Sat Sep  1 09:50:54 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ruby.c (set_arg0): prevent SEGV when val is longer than the
-	  original arguments.
-
-	* ruby.c (ruby_process_options): initialize total length of
-	  original arguments at first.
-
-Sat Sep  1 14:05:28 2001  Brian F. Feldman  <green@FreeBSD.org>
-
-	* ruby.c (set_arg0): use setprogtitle() if it's available.
-
-Sat Sep  1 03:49:11 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_popen): accept integer flags as mode.
-
-Fri Aug 31 19:46:05 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (rb_find_file_ext): extension table can be supplied from
-	  outside.  renamed.
-
-	* eval.c (rb_f_require): replace rb_find_file_noext by
-	  rb_find_file_ext.
-
-Fri Aug 31 19:26:55 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_provided): should also check feature without
-	  extension.
-
-Fri Aug 31 13:06:33 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_to_s): do not rely on decimal point to be '.'
-
-Wed Aug 29 02:18:53 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): ternary ? can be followed by newline.
-
-Tue Aug 28 00:40:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_require): should check static linked libraries
-	  before raising exception.
-
-Fri Aug 24 15:17:40 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_equal): check identity equality first.
-
-	* string.c (rb_str_equal): ditto.
-
-	* struct.c (rb_struct_equal): ditto.
-
-Fri Aug 24 14:38:17 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* dln.c (dln_strerror): fix a bug that sometimes made null message on
-	  win32 (Tietew <tietew@tietew.net>'s patch).
-
-	* win32/win32.c (mystrerror): ditto.
-
-Fri Aug 24 03:15:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (Init_Numeric): undef Integer::new.
-
-Fri Aug 24 00:46:44 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): NODE_WHILE should update result for each
-	  conditional evaluation.
-
-	* eval.c (rb_eval): NODE_UNTIL should return last evaluated value
-	  (or value given to break).
-
-Thu Aug 23 21:59:38 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* enum.c (sort_by_i): fix typo.
-
-Thu Aug 23 10:10:59 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): should not dump core for "defined?(())".
-
-	* eval.c (umethod_bind): recv can be an instance of descender of
-	  oklass if oklass is a Module.
-
-Wed Aug 22 23:20:03 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_equal): check identity equality first.
-
-Wed Aug 22 19:58:59 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (intersect_fds): counts intersecting fds.
-
-	* eval.c (rb_thread_schedule): only fds requested by
-	  each thread count as select_value.
-
-Tue Aug 21 22:28:09 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (group_member): should check real gid only.
-
-	* file.c (eaccess): do not cache euid, since effective euid may be
-	  changed via Process.euid=().
-
-	* file.c (eaccess): return -1 unless every specified access mode
-	  is permitted.
-
-Tue Aug 21 16:09:27 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): while/until returns the value which is given
-	  to break.
-
-	* parse.y (value_expr): using while/until/class/def as an
-	  expression is now gives a warning, not an error.
-
-Tue Aug 21 11:56:02 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_eqq): should compare strings based on magical
-	  increment (using String#upto), not dictionary order.
-
-Mon Aug 20 19:53:16 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/digest/sha2/extconf.rb: fix support for cross-compiling.
-
-	* mkconfig.rb: fix support for autoconf 2.52.
-
-Mon Aug 20 17:24:15 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_sort_by): new method for Schewartzian transformed
-	  stable sort.
-
-Mon Aug 20 16:09:05 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (mod_av_set): detect constant overriding for built-in
-	  classes/modules.
-
-Mon Aug 20 15:14:27 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (tokadd_escape): escaped backslashes too much.
-
-Mon Aug 20 13:24:08 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): 'iter' here should be an array.
-
-Mon Aug 20 12:43:08 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): should retrieve __member__ data from
-	  non-singleton class.
-
-Sat Aug 18 23:11:14 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_cvar_get): class variable override check added.
-
-	* variable.c (rb_cvar_set): ditto
-
-	* variable.c (rb_cvar_declare): ditto.
-
-Fri Aug 17 12:13:48 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/protocol.rb: Protocol.new requires at least one arg.
-
-	* lib/net/smtp.rb: ditto.
-
-	* lib/net/pop.rb: ditto.
-
-	* lib/net/http.rb: ditto.
-
-Fri Aug 17 00:49:51 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parse_regx): handle backslash escaping of delimiter here.
-
-Thu Aug 16 23:03:40 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* io.c: prevent recursive malloc calls on NEC UX/4800.
-
-	* ext/socket/socket.c: ditto.
-
-Thu Aug 16 13:54:04 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (s_recvfrom): fix typo.
-
-Thu Aug 16 09:53:28 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (s_recvfrom): avoid VC++6 warning.
-
-Thu Aug 16 03:50:33 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* win32/win32.c (NtCmdGlob): avoid VC++ warning.
-
-	* lib/mkmf.rb: add -I$(srcdir) to CPPFLAGS.
-
-Wed Aug 15 04:59:15 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/*/extconf.rb: really fix so that they build from any
-	  directory.
-
-Wed Aug 15 04:04:02 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha2/extconf.rb: fix so that they build from any
-	  directory.
-
-Wed Aug 15 01:59:19 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/defs.h: Define NO_UINT64_T instead of emitting an
-	  error to fail.
-
-	* ext/digest/sha2/extconf.rb: Do not exit on error, and utilize
-	  NO_UINT64_T to detect if the system has a 64bit integer type.
-
-Tue Aug 14 21:14:07 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha2/extconf.rb: do not create Makefile when no 64bit
-	  integer type is detected.
-
-Tue Aug 14 17:09:12 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): new method.
-
-Tue Aug 14 11:49:00 2001  TOYOFUKU Chikanobu  <toyofuku@juice.or.jp>
-
-	* string.c (rb_str_cmp): remove needless conditional.
-
-Tue Aug 14 03:23:25 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* string.c (rb_str_lstrip_bang) `return Qnil' was missing.
-
-Mon Aug 13 14:16:46 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* bignum.c, marshal.c: Detypo: s/SIZEOF_ING/SIZEOF_INT/.
-
-Sun Aug 12 15:01:58 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* string.c (rb_str_cat): fix buffer overflow.
-
-	* string.c (rb_str_append): nothing to append actually when `str2'
-	  is empty.
-
-Sat Aug 11 14:43:47 2001  Tanaka Akira  <akr@m17n.org>
-
-	* array.c (rb_inspecting_p): initialize inspect_key if it is
-	  not initialized yet.
-
-Fri Aug 10 22:14:37 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (cond0): operands of logical operators are not treated
-	  as conditional expression anymore, but propagate conditional
-	  status if used in conditionals.
-
-Tue Aug  7 09:10:32 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* win32/win32.h: fix problems with BC++ (ruby-bugs#PR161).
-
-Mon Aug  6 23:47:46 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* pack.c (pack_pack): associates p/P strings once at last
-	  (reverted to 1.26).
-
-	* string.c (rb_str_associate): associates an Array at once, not
-	  but a String. realloc's when str_buf.
-
-Mon Aug  6 17:01:33 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_gc_mark_threads): should mark ruby_cref.
-
-Mon Aug  6 14:31:37 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* numeric.c (num_divmod): fix typo.
-
-Mon Aug  6 03:29:03 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_lstrip_bang): new method.
-
-	* string.c (rb_str_rstrip_bang): new method.
-
-Mon Aug  6 00:35:03 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* struct.c (rb_struct_modify): should check frozen and taint
-	  status.
-
-Sun Aug  5 19:28:39 2001  Nobuyoshi Nakada <nobu.nakada@nifty.ne.jp>
-
-	* string.c (rb_str_associate): should consider STR_ASSOC too.
-
-Sun Aug  5 07:46:18 2001  Nobuyoshi Nakada <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_undefined): do not recurse if method_missing is
-	  undefined.
-
-Thu Aug  2 21:37:32 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_waitpid): now all arguments are optional.
-
-	* process.c (Init_process): waitpid is now alias to wait.
-
-	* process.c (Init_process): waitpid2 is now alias to wait2.
-
-	* process.c (rb_waitpid): made public.
-
-	* ext/pty/pty.c (pty_getpty): avoid disturbing SIGCHLD using
-	  thread and rb_waitpid.
-
-Thu Aug  2 11:23:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_getpgrp): now takes no argument on all
-	  platforms.
-
-	* process.c (proc_setpgrp): ditto.
-
-Thu Aug  2 01:29:42 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (strrdirsep): removed meaningless code.
-
-	* file.c (rb_file_s_expand_path): reverted to 1.66.
-
-Wed Aug  1 16:17:47 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_pack_sockaddr_in): added
-	  Socket::pack_sockaddr_in(). [new]
-
-	* ext/socket/socket.c (sock_s_pack_sockaddr_un): added
-	  Socket::pack_sockaddr_un(). [new]
-
-	* ext/socket/socket.c (sock_s_pack_sockaddr_in): added
-	  Socket::unpack_sockaddr_in(). [new]
-
-	* ext/socket/socket.c (sock_s_pack_sockaddr_un): added
-	  Socket::unpack_sockaddr_un(). [new]
-
-Wed Aug  1 15:42:16 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* eval.c (ruby_run): avoid VC++ warning.
-
-Tue Jul 31 17:30:53 2001  Usaku Nakamura  <usa@ruby-lang.org>
-
-	* marshal.c (Init_marshal): fix typos.
-
-Tue Jul 31 15:16:39 2001  Nobuyoshi Nakada <nobu.nakada@nifty.ne.jp>
-
-	* process.c (last_status_set): nothing returned, should be void.
-
-	* ext/socket/socket.c (load_addr_info): ditto.
-
-Tue Jul 31 12:11:42 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (Init_marshal): new constant Marshal::MAJOR_VERSION
-	  and Marshal::MINOR_VERSION.
-
-Tue Jul 31 07:18:04 2001  Nobuyoshi Nakada <nobu.nokada@softhome.net>
-
-	* file.c (rb_file_s_expand_path): scans per path element not per
-	  byte/character, including fix of [ruby-talk:18152] and
-	  multi-byte pathname support.
-
-Tue Jul 31 11:52:10 2001  akira yamada  <akira@ruby-lang.org>
-
-	* marshal.c (marshal_load): ruby_verbose test should be wrapped by
-	  RTEST().
-
-Mon Jul 30 17:54:23 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_index): should return nil (not the default
-	  value) if value is not in the hash.
-
-Mon Jul 30 12:55:47 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_div): new method added.  alias to '/' which
-	  should be preserved even if '/' is redefined (e.g. by
-	  mathn). [new]
-
-Mon Jul 30 11:12:14 2001  Amos Gouaux <amos+ruby@utdallas.edu>
-
-	* lib/net/imap.rb: added new commands for managing folder quotas
-	  and folder ACLs.
-
-Mon Jul 30 03:19:53 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cstr2inum): "0 ff".hex should return 0, not 255.
-
-Fri Jul 27 22:29:41 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (rb_file_s_expand_path): fixed using CharNext().
-
-Fri Jul 27 18:07:27 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_provided): extension should be guessed using
-	  rb_find_file_noext().
-
-	* eval.c (rb_f_require): should call rb_feature_p() after
-	  extension completion.
-
-Fri Jul 27 16:25:52 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): add CHECK_INTS before next, redo, retry to
-	  avoid potential uninterruptable infinite loop.
-
-Thu Jul 26 11:27:12 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* file.c (rb_find_file_noext, rb_find_file): fix tilde expansion
-	  problem.
-
-Wed Jul 25 17:54:20 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_expand_path): use CharNext() to expand.
-
-Wed Jul 25 17:16:26 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* intern.h: add some missing function prototypes.
-
-Wed Jul 25 15:50:05 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* file.c (rb_file_s_expand_path): should not expand "." and ".."
-	  not following dirsep.
-
-Wed Jul 25 12:15:32 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* file.c (rb_find_file_noext): should update f by expanded path.
-
-	* file.c (rb_find_file): ditto.
-
-Tue Jul 24 23:10:47 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (strrdirsep): multi-byte pathname and DOSish separator
-	  support. originally comes from Patrick Cheng. [new]
-
-	* file.c (rb_file_s_basename, rb_file_s_dirname): use
-	  strrdirsep(). comes from Patrick Cheng.
-
-	* file.c (is_absolute_path): restricted in DOSish absolute path
-	  with drive letter, and UNC support. originally comes from
-	  Patrick Cheng.
-
-	* file.c (getcwd): define macro using getwd() unless provided.
-
-Tue Jul 24 19:23:15 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: dig the target subdirectory for
-	  lib/* files properly in case of create_makefile("dir/name").
-
-Mon Jul 23 00:26:04 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_provide_feature): should not tweak extension used for
-	  loading.
-
-Sun Jul 22 21:16:43 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: introduce a couple of new make
-	  variables: CLEANFILES and DISTCLEANFILES.  They'd typically be
-	  defined in a file "depend".
-
-Sat Jul 21 09:40:10 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* io.c (io_fread): use fread(3) if PENDING_COUNT is available.
-
-Fri Jul 20 22:55:01 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* gc.c (ruby_xrealloc): fix a dangling bug which led memory
-	  reallocation to fail even though the second try after a GC
-	  succeeds.
-
-Fri Jul 20 03:00:46 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* class.c (rb_mod_include_p): Module#include? added. [new]
-
-Fri Jul 20 01:05:50 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (ignorecase_setter): give warning on modifying $=.
-
-	* string.c (rb_str_casecmp): new method. [new]
-
-	* string.c (rb_str_eql): separated from rb_str_equal(), make it
-	  always be case sensitive. [new]
-
-	* string.c (rb_str_hash): made it always be case sensitive.
-
-Thu Jul 19 13:03:15 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_f_require): should not include path in $" value
-
-	* file.c (rb_find_file): should return 0 explicitly on failure.
-
-Tue Jul 17 11:44:40 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* ruby.h: enable volatile directive with VC++.
-
-	* regex.c: ditto.
-
-Tue Jul 17 06:01:12 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* doc/net/smtp.rd.ja, pop.rd.ja, http.rd.ja: new files.
-
-	* MANIFEST: add doc/net/{http,pop,smtp}.rd.ja.
-
-Tue Jul 17 11:22:01 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (NUM_FAILURE_ITEMS): was confusing NUM_REG_ITEMS and
-	  NUM_NONREG_ITEMS, which have happened to be same value.
-
-Tue Jul 17 11:08:34 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* ext/extmk.rb.in: modify RM macro because command.com/cmd.exe don't
-	  recognize single quotation as quote character.
-
-	* lib/mkmf.rb: ditto.
-
-Tue Jul 17 01:38:15 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_class_new): subclass check moved to this function.
-
-	* class.c (rb_class_boot): check less version of rb_class_new().
-
-Man Jul 16 13:21:30 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* file.c (file_load_ok): fix typo.
-
-Mon Jul 16 12:58:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_invoke): should preserve iter status for embedded
-	  frame in the block.
-
-Mon Jul 16 00:04:39 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_expand_path): may overrun buffer on stack.
-
-Sun Jul 15 01:38:28 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* string.c (rb_str_insert): forgot to call rb_str_modify().
-
-Sat Jul 14 12:26:30 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/digest/*/extconf.rb: fix so that they build from any
-	  directory.
-
-Sat Jul 14 06:20:17 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/net/http.rb: HTTP#proxy? did not worked.
-
-Sat Jul 14 02:56:19 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in: support multi-level ext/ directories.
-	  (e.g. you can have ext/foo, ext/foo/bar and ext/foo/baz)
-
-Sat Jul 14 02:55:02 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/.cvsignore: let cvs ignore extinit.c.
-
-Fri Jul 13 23:47:35 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_search): should consider reverse search.
-
-Fri Jul 13 22:26:09 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb: use File::split to split a target into a prefix and
-	  a module name.  This also works around a just found bug of
-	  String#rindex.
-
-	* ext/extmk.rb.in: ditto.
-
-Fri Jul 13 02:36:10 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* dir.c (dir_s_chdir): warn only when invoked from multiple
-	  threads or block is not given.
-
-Thu Jul 12 15:11:48 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): workaround for the setup of
-	  Cygwin socket(EALREADY).
-
-Mon Jul  9 16:49:30 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in: modify RM macro.
-
-	* lib/mkmf.rb: ditto.
-
-Sun Jul  8 20:52:02 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ruby.h: fix a wrong function name: rb_iglob() -> rb_globi().
-
-Sun Jul  8 16:04:35 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: rename HTTP#request_by_name to send_request.
-
-	* lib/net/protocol.rb (ProtoSocket#read): modify typo.
-
-Sat Jul  7 17:45:35 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_convert_type): should use rb_rescue(), not rb_rescue2().
-
-	* range.c (range_init): ditto.
-
-Fri Jul  6 18:01:10 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_dup): copies (actually does not free)
-	  generic_ivar on dupif original owns them.
-
-Fri Jul  6 02:15:06 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb: a tempfile must be created with mode 0600.
-
-Thu Jul  5 20:28:53 2001  Tietew <tietew@tietew.net>
-
-	* string.c (rb_str_each_line): should propagate taint mark.
-
-	* ext/nkf/nkf.c (rb_nkf_kconv): ditto.
-
-Fri Jul  6 14:54:27 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_require): revamp for simpler implementation.
-
-	* file.c (rb_find_file_noext): use String object, instead of
-	  passing char* around.
-
-	* file.c (rb_find_file): ditto.
-
-Thu Jul  5 22:01:02 2001  Mitsuhiro Kondo  <kondo@nik-prt.co.jp>
-
-	* dln.c (dln_load): should use NSLINKMODULE_OPTION_BINDNOW.
-
-Thu Jul  5 13:44:03 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (load_file): local variables 'c' remain uninitialized on
-	  xflag.
-
-Thu Jul  5 10:00:59 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_match): prefetched escaped character too early.
-
-Wed Jul  4 08:58:30 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): add argument check for attr_readers.
-
-Wed Jul  4 04:22:44 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTP#request_by_name): arg order changes.
-
-Wed Jul  4 04:07:36 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTP#request_by_name): bug fix.
-
-	* lib/net/http.rb: does not write Connection: by default.
-
-	* lib/net/protocol.rb: "start" for started protocol is an error.
-
-	* lib/net/protocol.rb: "finish" for finished protocol is an error.
-
-Wed Jul  4 03:17:31 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb: new method HTTP#request_by_name (test)
-
-	* lib/net/http.rb: new class HTTPGenericRequest
-
-Tue Jul  3 23:58:29 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb: distclean should remove mkmf.log as well.
-
-Tue Jul  3 18:35:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval_string_wrap): should push frame (and adjust
-	  cbase) before wrapped eval.
-
-	* eval.c (rb_eval_cmd): ditto.
-
-	* eval.c (eval): should update ruby_class always after all.
-
-Tue Jul  3 14:56:27 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* eval.c (block_pass): do not change wrapper information.
-
-	* eval.c (rb_yield_0):  preserve wrapper information.
-
-Tue Jul  3 08:59:50 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* error.c (rb_name_error): raise NameError instead of LoadError.
-
-Mon Jul  2 17:22:00 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_exception): clone the receiver exception instead of
-	  creating brand new exception object of the receiver.
-
-Mon Jul  2 09:53:12 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval_string_wrap): extend new ruby_top_self, not
-	  original self.
-
-	* eval.c (rb_eval_cmd): respect ruby_wrapper if set.
-
-	* eval.c (eval): do not update ruby_class unless scope is not
-	  provided.
-
-Sun Jul  1 10:51:15 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* eval.c (eval): preserve wrapper information.
-
-	* eval.c (proc_invoke): ditto.
-
-	* eval.c (block_pass): ditto.
-
-Sat Jun 30 02:55:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (void_expr): too much warnings for void context
-	  (e.g. foo[1] that can be mere Proc call).
-
-Fri Jun 29 17:23:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (rb_name_error): new function to raise NameError with
-	  name attribute set.
-
-	* eval.c (rb_f_missing): set name and args in the exception
-	  object. [new]
-
-	* error.c (name_name): NameError#name - new method.
-
-	* error.c (nometh_args): NoMethodError#args - new method.
-
-Fri Jun 29 15:29:31 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lex.c (rb_reserved_word): lex_state after tRESCUE should be
-	  EXPR_MID.
-
-Thu Jun 28 00:21:28 2001  Keiju Ishitsuka <keiju@ishitsuka.com>
-
-	* lib/matrix.rb: resolve 'ruby -w' warnings.
-
-	* lib/irb/locale.rb: resolve 'ruby -w' warnings.
-
-	* lib/irb/multi-irb.rb: resolve 'ruby -w' warnings.
-
-	* lib/irb/ruby-lex.rb: fix problem for "\\M-\\..." and "\\C-\\..."
-	  and resolve 'ruby -w' warnings.
-
-	* lib/irb/ruby-token.rb: fix typo
-
-	* lib/shell/command-processor.rb: resolve 'ruby -w' warnings.
-
-Wed Jun 27 08:53:26 2001  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: new methods POP3.auth_only, POP3#auth_only
-
-	* lib/net/http.rb: HTTP.Proxy returns self if ADDRESS is nil.
-
-	* lib/net/protocol.rb: new method ProtocolError#response
-
-	* lib/net/protocol.rb,smtp.rb,pop.rb,http.rb: add document.
-
-Tue Jun 26 18:42:42 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (add_heap): allocation size of the heap unit is doubled for
-	  each allocation.
-
-Mon Jun 25 09:54:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (isdelim): space, tab, and newline are no longer
-	  delimiters for glob patterns.
-
-Sat Jun 23 22:28:52 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (svalue_to_avalue): new conversion scheme between single
-	  value and array values.
-
-	* eval.c (avalue_to_svalue): ditto.
-
-	* eval.c (rb_eval): REXPAND now uses avalue_to_svalue(), return
-	  and yield too.
-
-	* eval.c (rb_yield_0): use avalue_to_svalue().
-
-	* eval.c (proc_invoke): Proc#call gives avaules, whereas
-	  Proc#yield gives mvalues.
-
-	* eval.c (bmcall): convert given value (svalue) to avalue.
-
-Sat Jun 23 18:28:52 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/readline/readline.c (readline_event): a non-void function
-	  should return a value.
-
-Fri Jun 22 23:17:28 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): workaround for the setup of
-	  Cygwin socket.
-
-Fri Jun 22 23:11:17 2001 Keiju Ishitsuka <keiju@ishitsuka.com>
-
-	* lib/irb/locale.rb: fix for require "kconv" problem
-
-Fri Jun 22 18:08:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): no mvalue_to_svalue conversion here.
-
-	* eval.c (massign): takes svalue, convert it to mvalue inside.
-
-	* eval.c (rb_eval): parameters for yield/return are always
-	  svalues now.
-
-	* eval.c (svalue_to_mvalue): more strict conversion.
-
-	* eval.c (mvalue_to_svalue): ditto.
-
-Fri Jun 22 17:12:23 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c (new_size): prime hash size enabled.
-
-	* ext/socket/socket.c (Init_socket): SO_* constants added.
-
-Tue Jun 19 22:24:07 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* gc.c (rb_setjmp): avoid GCC 3.0 warnings.
-
-Tue Jun 19 18:19:30 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/readline/readline.c: add new methods:
-	  Readline::completion_append_character and
-	  Readline::completion_append_character=.
-
-Tue Jun 19 16:29:50 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (svalue_to_mvalue): new function to convert from svalue
-	  to mvalue. [experimental]
-
-	* eval.c (mvalue_to_svalue): new function to convert from mvalue
-	  to svalue.
-
-	* eval.c (rb_eval): use mvalue_to_svalue().
-
-	* eval.c (rb_yield_0): use mvalue_to_svalue().
-
-	* eval.c (proc_invoke): proper mvalue handling.
-
-Mon Jun 18 17:38:50 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_require): searches ".rb" and ".so" at the same
-	  time.  previous behavior (search ".rb", then ".so") has a
-	  security risk (ruby-bugs#PR140).
-
-	* array.c (rb_ary_to_ary): new function to replace internal
-	  rb_Array(), which never calls to_a, but to_ary (rb_Array() might
-	  call both). [new]
-
-Mon Jun 18 00:43:20 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (PUSH_FAILURE_POINT): push option status again.
-
-	* regex.c (re_compile_pattern): avoid pushing unnecessary
-	  option_set.
-
-Sat Jun 16 10:58:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_load): tainted string is OK if wrapped *and*
-	  $SAFE >= 4.
-
-Thu Jun 14 16:27:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): should not nail down higher blocks
-	  before preserving original context (i.e. should not alter
-	  original context).
-
-Wed Jun 13 19:34:59 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* dir.c (Init_Dir): add a new method File::fnmatch? along with
-	  File::Constants::FNM_*.  While I am here, FNM_NOCASE is renamed
-	  to FNM_CASEFOLD which is commonly used by *BSD and GNU libc.
-
-Wed Jun 13 09:33:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_yield): new method equivalent to Proc#call but no
-	  check for number of arguments. [new]
-
-Tue Jun 12 14:21:28 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* lib/mkmf.rb: target_prefix is only for installation, not for
-	  build.
-
-Tue Jun 12 00:41:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (method_eq): new method Method#==. [new]
-
-Mon Jun 11 14:29:41 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: add RUBY_CANONICAL_BUILD.
-
-Sun Jun 10 17:31:47 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* gc.c (STR_NO_ORIG): STR_NO_ORIG value was different between
-	  string.c and gc.c
-
-Sat Jun  9 22:10:04 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should convert *non-array at the end of
-	  arguments by using Array().
-
-Sat Jun  9 17:04:30 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* hash.c (ruby_setenv): readline library leaves their environment
-	  strings uncopied.  "free" check revised.
-
-Sat Jun  9 16:31:03 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* ext/extmk.rb.in: Use -F and -T for mswin32 because cl.exe doesn't
-	  support -o officially and cl.exe considers that *.cc and *.cxx are
-	  OBJs.
-
-	* lib/mkmf.rb: ditto.
-
-	* win32/Makefile.sub: Use del instead of rm.
-	  All these changes are derived from Nobuyoshi Nakada's patch.
-	  Thanks.
-
-Fri Jun  8 22:37:40 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (Init_stack): avoid __builtin_frame_address(2) to retrieve
-	  stack bottom line.
-
-Fri Jun  8 18:14:12 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c (numhash): should shuffle bits by dividing by prime number.
-
-Fri Jun  8 17:05:21 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): multiple assignment behavior fixed, which
-	  results "*a = nil" makes "a == []" now.
-
-Fri Jun  8 15:25:09 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_require): should set SCOPE_PUBLIC before calling
-	  dln_load().
-
-Thu Jun  7 17:28:00 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): exclude kDO_BLOCK too much by false condition.
-
-Wed Jun  6 23:02:36 2001  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/sync.rb: bug fix if obj.initialize has parameters when
-	  obj.extend(Sync_m)
-
-	* lib/mutex_m.rb: modified bit
-
-Wed Jun  6 16:11:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_load): should check if tainted even when wrap is
-	  specified.
-
-Wed Jun  6 14:34:27 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (mrhs_basic): "*arg" should always be expanded by REXPAND.
-
-	* regex.c (re_compile_pattern): too much optimization for the
-	  cases like /(.|a)b/.
-
-Tue Jun  5 23:58:43 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (fc_i): removed vast string allocation.
-
-Tue Jun  5 16:45:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (Init_Exception): NameError went under StandardError,
-	  and NoMethodError went under NameError.
-
-Tue Jun  5 16:40:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (rb_intern): non identifier symbols should be
-	  categorized as ID_JUNK. [new]
-
-Tue Jun  5 16:15:58 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_const_at): use hash table as internal
-	  data. [new]
-
-	* variable.c (rb_mod_const_of): ditto.
-
-	* variable.c (rb_const_list): new function to convert internal
-	  data (hash table) to array of strings.
-
-	* eval.c (rb_mod_s_constants): data handling scheme has changed.
-
-Tue Jun  5 15:16:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_add_method): should not call rb_secure(), for
-	  last_func may not be set.
-
-	* io.c (rb_io_ctl): ioctl should accept any integer within C long
-	  range.
-
-Tue Jun  5 13:41:13 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/etc/extconf.rb: use egrep_cpp.
-
-Tue Jun  5 12:44:59 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object): wrong type check for modules.
-
-	* marshal.c (w_object): should not dump anonymous classes/modules.
-
-Tue Jun  5 01:19:34 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_open_file): use rb_file_sysopen_internal() if the 3rd
-	  argument (permission flags) is given. [new, should be backported?]
-
-	* io.c (rb_io_mode_binmode): mode string (e.g. "r+") to flags to
-	  open(2).
-
-Mon Jun  4 23:55:54 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): NODE_REXPAND expand an array of 1 element as
-	  the element itself. [new, should be backported?]
-
-	* parse.y (ret_args): should treat "*[a]" in rhs expression as
-	  "a", not "[a]".
-
-Mon Jun  4 04:14:53 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/shellwords.rb: don't destroy argument.
-
-Sat Jun  2 23:23:05 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): should push option modifier at the
-	  right place.
-
-Sat Jun  2 23:05:20 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* lib/cgi/session.rb: don't use module_function for Class.
-
-Sat Jun  2 00:02:22 2001  Keiju Ishitsuka <keiju@ishitsuka.com>
-
-	* irb messages: fix typos.
-
-Fri Jun  1 17:26:24 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* hash.c (replace_i): ignore when key == Qundef.
-
-Fri Jun  1 16:50:59 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (call_args2): confusion with list_append() and
-	  list_concat() was fixed.
-
-Fri Jun  1 15:01:40 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): fixed 'print CGI::bar() {}, "\n"' syntax
-	  breakage, adding new lex_state status.  sigh. [new]
-
-Fri Jun  1 11:21:04 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: use waitpid on mingw32.
-
-	* ext/dbm/extconf.rb: include <ndbm.h>, not <gdbm.h>.
-
-Thu May 31 18:34:57 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* file.c (rb_file_s_unlink): should not allow if $SAFE >= 2.
-
-Thu May 31 17:23:25 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (Init_Range): define "to_ary".
-
-Thu May 31 13:30:25 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* mkconfig.rb, ext/configsub.rb: VERSION -> RUBY_VERSION.
-
-Thu May 31 08:00:58 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* win32/dir.h: re-add.
-
-Thu May 31 01:25:59 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in: default --with-libc_r to `no' until the problem is
-	  fixed. (FreeBSD only)
-
-Tue May 29 17:24:23 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* ruby.c (proc_options): unexpected SecurityError happens when -T4.
-
-Tue May 29 18:46:04 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): * \1 .. \9 should be
-	  backreferences always.
-
-	* regex.c (re_match): backreferences corresponding to
-	  unclosed/unmatched parentheses should fail always.
-
-Tue May 29 16:35:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cat): use rb_str_buf_cat() if possible. [new]
-
-	* string.c (rb_str_append): ditto.
-
-	* string.c (rb_str_buf_cat): remove unnecessary check (type,
-	  taint, modify) to gain performance.
-
-	* string.c (rb_str_buf_append): ditto.
-
-	* string.c (rb_str_buf_finish): removed.
-
-Tue May 29 02:05:55 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_buf_new): buffering string function. [new]
-
-	* string.c (rb_str_buf_append): ditto.
-
-	* string.c (rb_str_buf_cat): ditto.
-
-	* string.c (rb_str_buf_finish): ditto.
-
-Mon May 28 23:20:43 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: remove unnecessary AC_CANONICAL_BUILD
-
-	* defines.h: #define HAVE_SETITIMER on Cygwin(bug fixed).
-
-	* ruby.c: use relative path from LIBRUBY_SO.
-
-	* ruby.c: don't use -mwin32 option on Cygwin.
-
-	* cygwin/GNUmakefile.in: ditto.
-
-	* ext/sdbm/_sdbm: ditto.
-
-	* ext/tcltklib/extconf.rb: ditto.
-
-	* ext/tcltklib/stubs.c: ditto.
-
-Mon May 28 22:12:01 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/extconf.rb.in: make the priority of the make rule of .c
-	  higher than .C .
-
-Mon May 28 13:22:19 2001  Tanaka Akira  <akr@m17n.org>
-
-	* time.c (make_time_t): local time adjustment revised.
-
-Mon May 28 02:20:38 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* dir.c (glob_helper): teach has_magic() to handle flags and get
-	  glob_helper to properly support FNM_NOESCAPE.
-
-	* dir.c (fnmatch): fix a bug when FNM_PATHNAME and FNM_PERIOD are
-	  specified at the same time.
-
-Sat May 26 09:55:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: accomplish extended syntax described in [ruby-talk:14525]
-	  using tSPC token. [new, experimental]
-
-Sat May 26 07:05:45 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* MANIFEST: add win32/dir.h .
-
-Fri May 25 20:03:51 2001  Pascal Rigaux  <pixel@mandrakesoft.com>
-
-	* dln.c (dln_find_1): should exclude directories in executable
-	  file lookup.
-
-Fri May 25 18:00:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_obj_singleton_methods): list methods in extended
-	  modules if optional argument is true. [new]
-
-Fri May 25 14:19:25 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* string.c (rb_str_replace): add taint status infection
-	  (OBJ_INFECT()).
-
-	* string.c (rb_str_crypt): ditto.
-
-	* string.c (rb_str_ljust): ditto.
-
-	* string.c (rb_str_rjust): ditto.
-
-	* string.c (rb_str_center): ditto.
-
-Fri May 25 05:39:03 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/sha1/sha1-ruby.c (sha1_hexdigest): fix buffer overflow.  The
-	  buffer for a SHA-1 hexdigest needs to be 41 bytes in length.
-
-Fri May 25 01:47:39 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* MANIFEST: update the entries I forgot to add or remove.
-
-Fri May 25 00:57:25 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/sha1/sha1-ruby.c (sha1_new): separate initialize() from
-	  new().
-
-	* ext/md5/md5init.c (md5i_new): ditto.
-
-Fri May 25 00:53:41 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/dbm/extconf.rb: fix support for *BSD and set $CFLAGS
-	  properly.
-
-Thu May 24 16:10:33 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_member): check based on "<=>" comparison. [new]
-
-	* range.c (range_check): add "succ" check if first end is not a
-	  numeric.
-
-	* range.c (range_eqq): comparison should based on "<=>".
-
-	* range.c (range_each): ditto.
-
-Thu May 24 16:08:21 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* mkconfig.rb: autoconf 2.50 support.
-
-Thu May 24 14:23:35 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): need argument adjustment for C defined
-	  blocks too.
-
-Thu May 24 01:11:30 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/extconf.rb: header search added. [new]
-
-Wed May 23 02:58:21 2001  Tanaka Akira  <akr@m17n.org>
-
-	* time.c (make_time_t): fix ad-hoc local time adjustment, using
-	  binary tree search.
-
-Tue May 22 17:10:35 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* variable.c (rb_alias_variable): should not allow variable
-	  aliasing if $SAFE >= 4.
-
-Tue May 22 02:37:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (expr): "break" and "next" to take optional expression,
-	  which is used as a value for termination. [new, experimental]
-
-	* eval.c (rb_eval): "break" can give value to terminating method.
-
-	* eval.c (rb_eval): "break" and "next" to take optional expression.
-
-	* eval.c (rb_yield_0): "next" can give value to terminating "yield".
-
-	* eval.c (rb_iterate): "break" can give value to terminating method.
-
-	* eval.c (proc_call): ditto.
-
-Mon May 21 13:15:25 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big2str): t should be protected from GC.
-
-Sat May 19 09:29:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_proc_times): need not to check return value from
-	  times(2).
-
-Fri May 18 05:36:08 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in (xsystem): backout the previous fix which was
-	  bogus.
-
-Fri May 18 05:19:55 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb (xsystem): make a temporary fix to get $(...) macros
-	  properly expanded on a command execution.
-
-	* ext/extmk.rb.in (xsystem): ditto.
-
-Fri May 18 03:45:55 2001  Brian F. Feldman  <green@FreeBSD.org>
-
-	* lib/mkmf.rb: unbreak "make install".  lib/* must be installed
-	  under $rubylibdir, not under $libdir.
-
-Fri May 18 01:28:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (expr): break, next, redo, retry are moved from primary.
-
-Fri May 18 01:11:02 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* ext/sha1/sha1-ruby.c (sha1_new): get rid of an unneeded
-	  rb_obj_call_init() call.
-
-Fri May 18 01:03:55 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* ext/sha1/sha1.txt, ext/sha1/sha1.txt.jp: fix typos.
-
-Thu May 17 19:17:11 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/shell.rb, lib/shell/process-controller.rb,
-	  lib/shell/command-processor.rb: translate Japanese comments into
-	  English.
-
-Thu May 17 19:07:14 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* doc/shell.rd.jp: RD'ify and make some fixes.
-
-	* doc/shell.rd: RD'ify, delete Japanese leftovers, make overall
-	  English fixes, and sync with doc/shell.rd.jp.
-
-Thu May 17 17:35:04 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): address of local_vars might change during eval.
-
-Thu May 17 07:27:09 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/md5/md5.txt.jp, ext/sha1/sha1.txt.jp:
-	  s/SuperClass/Superclass/.
-
-Thu May 17 07:21:44 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/Setup.dj, ext/Setup.emx, ext/Setup.nt, ext/Setup.x68:
-	  compile sha1 in as well as md5.
-
-	* ext/Setup: put sha1 in a comment.
-
-Thu May 17 07:16:38 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/sha1/sha1.txt.jp: add the Japanese version derived from
-	  ext/md5/md5.txt.jp.
-
-	* ext/sha1/sha1.txt: revise the copyright info and reduce the
-	  difference from ext/md5/md5.txt.
-
-	* ext/md5/md5.txt: reduce the difference from ext/sha1/sha1.txt.
-
-Thu May 17 07:11:35 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/sha1/extconf.rb, ext/sha1/sha1.c: use WORDS_BIGENDIAN to
-	  detect the platform's endian.
-
-Thu May 17 06:31:30 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/md5/md5.txt: make wording fixes, and mention the newly added
-	  method: "<<".
-
-	* ext/md5/md5.txt.jp: ditto.
-
-Wed May 16 18:05:52 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/md5/md5init.c: add an instance method "<<" as an alias for
-	  "update". (inspired by Steve Coltrin's ruby-sha1)
-
-Tue May 15 17:46:37 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_and): should not push frozen key string.
-
-	* array.c (rb_ary_or): ditto.
-
-Tue May 15 02:18:23 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/thread.rb: rescue ThreadError in case the thread is dead
-	  just before calling Thread#run.
-
-Mon May 14 13:50:22 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_schedule): should save context before raising
-	  deadlock, saved context for current thread might be obsolete.
-
-	* time.c (make_time_t): non DST timezone shift supported (hopefully).
-
-	* time.c (make_time_t): strict range detection for negative time_t.
-
-Mon May 14 11:54:20 2001  Tanaka Akira  <akr@m17n.org>
-
-	* signal.c: SIGINFO added.
-
-Mon May 14 08:57:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_ensure): should not SEGV when prot_tag is NULL.
-
-Sun May 13 23:51:14 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* win32/resource.rb: Modify copyright in resource script.
-
-Sun May 13 14:03:33 2001  Okada Jun  <yun@be-in.org>
-
-	* lib/thread.rb: fix Queue#pop and SizedQueue#max= to avoid
-	  deadlock.
-
-Sat May 12 15:43:55 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* win32/win32.c (kill): add support of signal 9 on mswin32/mingw32.
-
-Fri May 11 15:09:52 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ruby.h (rb_string_value): add volatile to avoid compiler warning.
-
-	* string.c (rb_string_value): ditto.
-
-Fri May 11 03:35:33 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README.EXT: Document find_library(), with_config() and
-	  dir_config().
-
-Fri May 11 03:34:20 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README.EXT.jp: Remove the description of find_header() because
-	  such a function does not actually exist.
-
-	* README.EXT.jp: Update the description of dir_config().
-
-Fri May 11 02:42:05 2001  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* README, README.jp: Fix CVS access and mailing lists info.
-
-Fri May 11 02:00:44 2001  Ryo HAYASAKA  <ryoh@jaist.ac.jp>
-
-	* bignum.c (bigdivrem): access boundary bug.
-
-Thu May 10 02:40:47 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): prohibit dumping out singleton classes.
-
-	* object.c (rb_mod_to_s): distinguish singleton classes.
-
-	* variable.c (rb_class2name): it's ok to reveal NilClass,
-	  TrueClass, FalseClass.
-
-Wed May  9 14:38:33 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (rb_yield_0): preserve and restore ruby_cref as well.
-
-Tue May  8 18:28:19 2001  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb.rb lib/irb/multi-irb.rb lib/irb/ruby-lex.rb
-	  lib/irb/version.rb resolve ctrl-c problem
-
-Tue May  8 17:12:43 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (is_defined): core dumped during instance_eval for
-	  special constants.
-
-	* eval.c (rb_eval): ditto.
-
-Tue May  8 08:52:57 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* doc/forwardable.rd, doc/forwardable.rd.jp: Hit `=begin' and
-	  `=end' in proper places so rd2 can format them without a problem.
-
-	* doc/irb/irb-tools.rd.jp, doc/irb/irb.rd, doc/irb/irb.rd.jp:
-	  ditto.
-
-Tue May  8 08:38:53 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* doc/forwardable.rd, doc/forwardable.rd.jp, lib/forwardable.rb:
-	  Import forwardable 1.1.
-
-Tue May  8 08:34:33 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* doc/irb/irb-tools.rd.jp, doc/irb/irb.rd.jp: Convert from JIS to
-	  EUC.
-
-Tue May  8 03:46:39 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* sample/rbc.rb: Obsoleted by IRB.
-
-Mon May  7 15:58:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): "||=" should not warn for uninitialized instance
-	  variables.
-
-	* eval.c (rb_eval): ditto.
-
-	* eval.c (eval): preserve and restore ruby_cref as well.
-
-Mon May  7 15:45:48 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/ftools.rb (syscopy): chmod destination file only if
-	  it does not exist.
-
-Mon May  7 14:35:57 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_is_instance_of): takes only class/module as an
-	  argument.
-
-Sun May  6 16:27:29 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* eval.c (is_defined): rb_reg_nth_defined() may return Qnil.
-
-Thu May  3 03:15:06 2001  SHIROYAMA Takayuki <psi@fortune.nest.or.jp>
-
-	* configure.in: get --enable-shared to work on MacOS X.
-
-	* Makefile.in: make $(LIBRUBY_SO) depend on miniruby properly.
-	  Now `make -jN' should work without a problem.
-
-Thu May  3 02:07:45 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* win32/config.h.in: add SIZEOF___INT64 definition.
-
-Wed May  2 20:39:35 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dir.c (rb_glob, rb_globi): remove unnecessary FNM_PATHNAME.
-
-Wed May  2 11:46:13 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (block_pass): should not downgrade safe level.
-
-Wed May  2 03:07:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/extconf.rb: allow specifying dbm-type explicitly.
-
-	* ext/dbm/extconf.rb: avoid gdbm if possible, because it leaks
-	  memory, whereas gdbm.so doesn't.  potential incompatibility.
-
-Wed May  2 02:02:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_insert): new method.
-
-Tue May  1 17:55:58 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): lex_state after RESCUE_MOD should be EXPR_BEG.
-
-Tue May  1 16:23:03 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_insert): new method.
-
-	* array.c (rb_ary_update): new utility function.
-
-Tue May  1 03:24:05 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/irb/completion.rb, lib/irb/frame.rb, lib/irb/xmp.rb,
-	  doc/irb/irb-tools.rd.jp: Merge from irb-tools 0.7.1.
-
-Tue May  1 03:07:17 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* sample/irb.rb, lib/irb.rb, lib/irb/*, doc/irb/*: Merge from irb
-	  0.7.3.
-
-	* instruby.rb: Install help-message's too.
-
-	* lib/irb/main.rb: This file is not needed anymore.
-
-Fri Apr 27 09:27:10 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (set_outfile): should check if closed before assignment.
-
-Thu Apr 26 22:36:11 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in:  don't use tzname on Cygwin 1.3.1+.
-
-	* configure.in: add -mieee/-ieee to CFLAGS on OSF1/Alpha
-	  to disable "DIVISION BY ZERO" exception.
-
-Thu Apr 26 22:30:43 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should preserve value of ruby_errinfo.
-
-Thu Apr 26 10:36:09 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_schedule): infinite sleep should not cause
-	  dead lock.
-
-Wed Apr 25 16:40:44 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_flatten_bang): proper recursive detection.
-
-Wed Apr 25 15:36:15 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (yield_under): need not to prohibit at safe level 4.
-
-Wed Apr 25 15:22:20 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): p/P packs nil into NULL.
-
-	* pack.c (pack_unpack): p/P unpacks NULL into nil.
-
-Tue Apr 24 15:35:32 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): size check for P template.
-
-	* ruby.c (set_arg0): wrong predicate when new $0 value is bigger
-	  than original space.
-
-Tue Apr 24 15:18:49 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: (dir_config) do not add the
-	  specified include directory if already included in $CPPFLAGS.
-
-	* ext/extmk.rb.in, lib/mkmf.rb: (dir_config) return a more useful
-	  value, [include_dir, lib_dir].
-
-Mon Apr 23 14:43:59 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (id2ref): should use NUM2ULONG()
-
-	* object.c (rb_mod_const_get): check whether name is a class
-	  variable name.
-
-	* object.c (rb_mod_const_set): ditto.
-
-	* object.c (rb_mod_const_defined): ditto.
-
-Sat Apr 21 22:33:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_float): precision changed to "%.16g"
-
-Sat Apr 21 22:07:58 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* eval.c (rb_call0): wrong retry behavior.
-
-Fri Apr 20 19:12:20 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_aref): a bug on long>int architecture.
-
-Fri Apr 20 14:57:15 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (rb_eval_string_wrap): should restore ruby_wrapper.
-
-Sun Apr 22 17:44:37 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: add -mieee to CFLAGS on Linux/Alpha
-	  to disable "DIVISION BY ZERO" exception.
-
-	* configure.in: remove -ansi on OSF/1.
-
-Wed Apr 18 04:37:51 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: CGI::Cookie: no use PATH_INFO.
-
-Wed Apr 18 00:24:40 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): char class at either edge of range
-	  should be invalid.
-
-Tue Apr 17 17:33:55 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (handle_rescue): use === to compare exception match.
-
-	* error.c (syserr_eqq): comparison between SystemCallErrors should
-	  based on their error numbers.
-
-Tue Apr 17 16:54:39 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (safe_getter): should use INT2NUM().
-
-Tue Apr 17 15:12:56 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big2long): 2**31 cannot fit in 31 bit long.
-
-Sat Apr 14 22:46:43 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* regex.c (calculate_must_string): wrong length calculation.
-
-Sat Apr 14 13:37:32 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* win32/config.status.in: no longer use missing/alloca.c.
-
-	* win32/Makefile.sub: ditto.
-
-Fri Apr 13 12:40:48 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (rb_thread_start_0): fixed memory leak.
-
-Fri Apr 13 16:41:18 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (none): should clear cmdarg_stack too.
-
-Fri Apr 13 06:19:29 2001  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* io.c (rb_fopen): use setvbuf() to avoid recursive malloc() on
-	  some platforms.
-
-Wed Apr 11 23:36:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_stat_dev): device functions should honor stat field
-	  types (except long long such as dev_t).
-
-Wed Apr 11 18:07:53 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (rb_mod_nesting): should not push nil for nesting array.
-
-	* eval.c (rb_mod_s_constants): should not search array by
-	  rb_mod_const_at() for nil (happens for singleton class).
-
-Wed Apr 11 13:29:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_singleton_class_attached): should modify iv_tbl by
-	  itself, no longer use rb_iv_set() to avoid freeze check error.
-
-	* variable.c (rb_const_get): error message "uninitialized constant
-	  Foo at Bar::Baz" instead of "uninitialized constantBar::Baz::Foo".
-
-Tue Apr 10 17:52:10 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_included): new hook called from rb_mod_include().
-
-Tue Apr 10 02:24:40 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* io.c (opt_i_set): should strdup() inplace_edit string.
-
-Mon Apr  9 23:29:54 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (exec_under): need to push cref too.
-
-Mon Apr  9 15:20:21 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_missing): raise NameError for "undefined local
-	  variable or method".
-
-	* error.c (Init_Exception): new exception NoMethodError.
-	  NameError moved under ScriptError again.
-
-	* eval.c (rb_f_missing): use NoMethodError instead of NameError.
-
-Mon Apr  9 12:05:44 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (Init_File): should redefine "new" class method.
-
-Mon Apr  9 11:56:52 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: fix typo.
-
-Fri Apr  6 01:46:35 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (PUSH_CREF): sharing cref node was problematic.  maintain
-	  runtime cref list instead.
-
-	* eval.c (rb_eval): copy defn node before registering.
-
-	* eval.c (rb_load): clear ruby_cref before loading.
-
-Thu Apr  5 22:40:12 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_get): no recursion to show full class path
-	  for modules.
-
-	* eval.c (rb_set_safe_level): should set safe level in curr_thread
-	  as well.
-
-	* eval.c (safe_setter): ditto.
-
-Thu Apr  5 13:46:06 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* object.c (rb_obj_is_instance_of): nil belongs to false, not true.
-
-Thu Apr  5 02:19:03 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (make_time_t): proper (I hope) daylight saving time
-	  handling for both US and Europe.  I HATE DST!
-
-	* eval.c (rb_thread_wait_for): non blocked signal interrupt should
-	  stop the interval.
-
-Wed Apr  4 03:47:03 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_eq): class check added.
-
-	* eval.c (proc_eq): typo fixed ("return" was omitted).
-
-	* error.c (Init_Exception): move NameError under StandardError.
-
-	* class.c (rb_mod_clone): should copy method bodies too.
-
-	* bignum.c (bigdivrem): should trim trailing zero bdigits of
-	  remainder, even if dd == 0.
-
-	* file.c (check3rdbyte): safe string check moved here.
-
-Tue Apr  3 09:56:20 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in (create_makefile): create def file only if
-	  it does not yet exist.
-
-	* lib/mkmf.rb: ditto.
-
-Tue Apr  3 00:05:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (make_time_t): remove HAVE_TM_ZONE code since it
-	  sometimes reports wrong time.
-
-	* time.c (make_time_t): remove unnecessary range check for
-	  platforms where negative time_t is available.
-
-Mon Apr  2 16:52:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_waitall): should push Process::Status instead of
-	  Fixnum status.
-
-	* process.c (waitall_each): should add all entries in pid_tbl.
-	  these changes are inspired by Koji Arai.  Thanks.
-
-	* process.c (proc_wait): should not iterate if pid_tbl is 0.
-
-	* process.c (proc_waitall): ditto.
-
-Mon Apr  2 14:25:49 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* lib/monitor.rb (wait): ensure reentrance.
-
-	* lib/monitor.rb (wait): fix timeout support.
-
-Mon Apr  2 12:40:45 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (media_subtype): return subtype.
-
-Mon Apr  2 12:01:15 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (flag_list): capitalize flags.
-
-Mon Apr  2 01:32:38 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* Makefile.in: Introduce MAINLIBS.
-
-	* configure.in: Link libc_r against the ruby executable on
-	  FreeBSD, which is the first attempt to work around a certain
-	  problem regarding pthread on FreeBSD.  It should make ruby/libruby
-	  happy when it loads an extension to a library compiled and linked
-	  with -pthread.  Note, however, that libruby is _not_ linked with
-	  libc_r so as not to mess up pthread unfriendly stuff including
-	  apache+mod_ruby and vim6+ruby_interp.
-
-Mon Apr  2 01:16:24 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c: use ruby's opendir on mingw32.
-
-	* win32/dir.h, dir.c, Makefile: ditto.
-
-Sun Apr  1 23:26:14 2001  TOYOFUKU Chikanobu  <toyofuku@juice.or.jp>
-
-	* numeric.c (flodivmod): a bug in no fmod case.
-
-Sun Apr  1 18:36:14 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* process.c (pst_wifsignaled): should apply WIFSIGNALED for status
-	  (int), not st (VALUE).
-
-Sat Mar 31 04:47:55 2001  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: add document and example code.
-
-Sat Mar 31 03:24:10 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (Init_IO): value of $/ and $\ are no longer restricted to
-	  strings.  type checks are done on demand.
-
-	* class.c (rb_include_module): module inclusion should be check
-	  taints.
-
-	* ruby.h (STR2CSTR): replace to StringType() and StringTypePtr().
-
-	* ruby.h (rb_str2cstr): ditto.
-
-Fri Mar 30 23:37:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_load): should not copy toplevel local variables.  It
-	  cause variable/method ambiguity.  Thanks to L. Peter Deutsch.
-
-Fri Mar 30 22:56:56 2001  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: rename ContinueRequest to ContinuationRequest.
-
-Fri Mar 30 12:51:19 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_include_module): freeze check at first.
-
-Thu Mar 29 17:05:09 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_attr): sprintf() and rb_intern() moved into
-	  conditional body.
-
-Wed Mar 28 23:43:00 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: add C++ rules in addition to C
-	  rules for the mswin32 platforms.
-
-Wed Mar 28 19:29:21 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: move C++ rules to the right place.
-
-Wed Mar 28 17:39:04 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_str2cstr): warn if string contains \0 and length
-	  value is ignored.
-
-Wed Mar 28 15:00:31 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* class.c (rb_singleton_class_clone): should copy class constant
-	  table as well.
-
-Wed Mar 28 14:23:23 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_include_module): sometimes cache was mistakenly left
-	  uncleared - based on the patch by K.Kosako.
-
-	* ruby.h: all Check_SafeStr()'s are replaced by SafeStr() to
-	  ensure 'to_str' be always effective.
-
-Wed Mar 28 09:52:33 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/Makefile.sub: disable global optimization.
-
-Tue Mar 27 15:00:54 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (rb_mod_define_method): should have clear method cache.
-
-	* eval.c (rb_mod_define_method): should have raised exception for
-	  type error.
-
-Tue Mar 27 14:48:17 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h: changed "extern INLINE" to "static inline".
-
-Mon Mar 26 23:19:33 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* time.c (rb_strftime): check whether strftime returns empty string.
-
-Mon Mar 26 21:16:56 2001  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: supports response handlers and multiple commands.
-
-Mon Mar 26 17:21:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c: remove TMP_PROTECT_END to prevent C_ALLOCA crash.
-
-Mon Mar 26 14:04:41 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/Win32API/Win32API.c: remove Init_win32api().
-
-Sun Mar 25 16:52:48 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* file.c (rb_file_flock): do not trap EINTR.
-
-	* missing/flock.c (flock): returns the value from lockf(2)
-	  directly.
-
-Sat Mar 24 23:44:50 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ev_const_defined): should ignore toplevel cbase (Object).
-
-	* eval.c (ev_const_get): ditto.
-
-Fri Mar 23 17:37:52 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/md5/md5.h: replace by independent md5 implementation
-	  contributed by L. Peter Deutsch (thanks).
-
-	* ext/md5/md5init.c: adopted to Deutsch's md5 implementation.
-
-Fri Mar 23 17:26:19 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_unpack): string from P/p should be tainted.
-
-Fri Mar 23 12:18:44 2001  SHIROYAMA Takayuki  <psi@fortune.nest.or.jp>
-
-	* ext/curses/curses.c: curses on Mac OS X public beta does not
-	  have _maxx etc.
-
-Fri Mar 23 10:50:31 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): should truncate trailing zero short for
-	  bignums.
-
-Fri Mar 23 09:49:02 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (sym_intern): new method.
-
-Thu Mar 22 22:15:45 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/Win32API/extconf.rb: add -fno-omit-frame-pointer.
-
-Thu Mar 22 18:17:36 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_nesting): should not include Object at the
-	  toplevel.
-
-Thu Mar 22 17:43:44 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h: better inline function support.
-
-	* configure.in (NO_C_INLINE): check if inline is available for the
-	  C compiler.
-
-Mon Mar 19 11:03:10 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* marshal.c (r_object): len calculation patch was wrong for
-	  machines SIZEOF_BDIGITS == SIZEOF_SHORT.
-
-	* gc.c: alloca prototype reorganized for C_ALLOCA machine.
-
-Wed Mar 21 23:07:45 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (win32_stat): WinNT/2k "//host/share" support.
-
-Wed Mar 21 08:05:35 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* win32/dir.h: replace missing/dir.h .
-
-	* win32/win32.h: ditto.
-
-	* win32/win32.c: ditto.
-
-Wed Mar 21 01:26:14 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (id2ref): sometimes confused symbol and reference.
-
-Tue Mar 20 23:09:33 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (win32_stat): UNC support.
-
-	* dir.c (extract_path): fix "./*" problem.
-
-Tue Mar 20 15:10:00 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (glob_helper): breaks loop after calling recursive
-	  glob_helper; all wild cards should be consumed; no need for
-	  further match.
-
-	* dir.c (dir_s_glob): gives warning if no match found.
-
-Tue Mar 20 14:13:45 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* object.c (sym_inspect): did allocate extra byte space.
-
-Mon Mar 19 19:14:47 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* marshal.c (shortlen): shortlen should return number of bytes
-	  written.
-
-Mon Mar 19 16:52:23 2001  K.Kosako  <kosako@sofnec.co.jp>
-
-	* eval.c (ev_const_defined): need not to check if cbase->nd_class
-	  is rb_cObject.
-
-	* eval.c (ev_const_get): ditto.
-
-Mon Mar 19 17:11:20 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_zone): return "UTC" for UTC time objects.
-
-Mon Mar 19 16:27:32 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (THREAD_ALLOC): flags should be initialized.
-
-	* signal.c (rb_f_kill): should use FIX2INT, not FIX2UINT.
-
-Mon Mar 19 10:55:10 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (glob_helper): replace lstat() by stat() to follow symlink
-	  in the case like 'symlink/*'.
-
-	* dir.c (glob_helper): gave warning too much.
-
-Sun Mar 18 08:58:18 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: // === '' --> //.match('')
-
-	* lib/cgi.rb: cgi#header(): improvement for mod_ruby.
-
-	* lib/cgi.rb: cgi#rfc1123date(): improvement.
-	  thanks to TADA Tadashi <sho@spc.gr.jp>.
-
-	* lib/cgi.rb: cgi#rfc1123date(): document bug fix.
-	  thanks to Kazuhiro NISHIYAMA <zn@mbf.nifty.com>.
-
-	* lib/cgi.rb: cgi#header(): bug fix.
-	  thanks to IWATSUKI Hiroyuki <don@na.rim.or.jp>.
-
-Sat Mar 17 11:11:24 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (glob_helper): * should follow symlink, whereas ** should
-	  not follow.
-
-Thu Mar 15 01:28:02 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_s_chdir): block form of Dir.chdir. (RCR#U016).
-
-Fri Mar 16 17:14:17 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in: Set SOLIBS properly for all ELF and
-	  FreeBSD/NetBSD/OpenBSD a.out platforms so that the shlib
-	  dependencies are recorded in the libruby shlib.
-
-Wed Mar 14 16:41:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_schedule): raise FATAL just once to
-	  THREAD_TO_KILL.
-
-Wed Mar 14 10:41:34 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): 0 (= Qfalse) is a valid value, so that
-	  default self should be checked by klass == 0.
-
-	* bignum.c (rb_cstr2inum): should disallow '++1', '+-1', etc.
-
-Tue Mar 13 17:51:09 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ev_const_defined): add new parameter self for special
-	  const fallback.
-
-	* eval.c (ev_const_get): ditto.
-
-Tue Mar 13 16:39:45 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dir.c (rb_glob_helper): fix drive letter handling on DOSISH.
-
-Tue Mar 13 14:54:39 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: add HTTPRequest#basic_auth.
-
-	* lib/net/smtp.rb: raise if only account or password is given.
-
-	* lib/net/protocol.rb: WriteAdapter#<< returns self.
-
-Tue Mar 13 14:41:16 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_seek_m): wrong calling sequence of rb_io_seek().
-
-Tue Mar 13 09:14:19 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (cond0): no special treatment of string literal in
-	  condition.
-
-Mon Mar 12 18:59:38 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): save/restore $libs and $LIBPATH.
-
-Sun Mar 11 18:13:34 2001  Masahiro Tanaka  <masa@stars.gsfc.nasa.gov>
-
-	* math.c: add acos, asin, atan, conh, sinh, tanh and hypot to Math.
-
-	* configure.in: check hypot availability.
-
-	* missing/hypot.c: public domain rewrite of hypot.
-
-Sun Mar 11 13:21:04 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* parse.y (warn_unless_e_option): warning condition was wrong.
-
-	* parse.y (warning_unless_e_option): ditto.
-
-Sun Mar 11 00:55:31 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (install_rb): fix handling of destination path.
-
-Sat Mar 10 22:56:44 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_all): new method 'all?', which returns true if
-	  block returns true for all elements.
-
-	* enum.c (enum_any): new method 'any?', which returns true if
-	  block returns true for any of elements.
-
-Sat Mar 10 02:34:18 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* math.c (math_log, math_log10): use nan() instead of 0.0/0.0 on Cygwin.
-
-Fri Mar  9 09:56:19 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (marshal_load): do not give warning unless explicitly
-	  set to verbose.
-
-Fri Mar  9 02:07:53 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_exit): give string value "exit" to SystemExit.
-
-	* ruby.c (proc_options): -v should not print version if
-	  proc_options called via moreswitches().
-
-Thu Mar  8 17:45:19 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb: one write(2) per one line.
-
-Wed Mar  7 14:26:11 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* math.c (math_log, math_log10): should return NaN if x < 0.0
-	  on Cygwin.
-
-Thu Mar  7 10:31:26 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (stmt): while/until modifier must work for empty body.
-
-Tue Mar  6 22:53:58 2001  Kazuhiro Yoshida   <moriq.kazuhiro@nifty.ne.jp>
-
-	* ruby.c (ruby_set_argv): clear ARGV contents before adding args.
-
-Tue Mar  6 10:50:29 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): rescue and ensure clauses should be allowed
-	  to appear in singleton method body.
-
-Mon Mar  5 17:25:13 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_eq): compare Procs using blocktag equality.
-
-	* eval.c (proc_to_s): stringify according to block tag address.
-
-Mon Mar  5 17:19:56 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (gettimeofday): use GetLocalTime() instead of ftime()
-	  for high-resolution timing.
-
-Sun Mar  4 17:01:09 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* string.c (trnext): support backslash escape in String#tr.
-
-Sat Mar  3 16:15:16 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): push cbase if ruby_cbase != ruby_class, for
-	  example in the case NODE_DEFN/NODE_DEFS are called within
-	  module_eval.
-
-Wed Feb 28 11:02:41 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_delete_bang): delete! should take at least 1
-	  argument.
-
-	* ruby.c (load_file): add rb_gc() after loading to avoid
-	  extraordinary memory growth.
-
-Wed Feb 28 05:01:40 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* dir.c (rb_glob_helper): "./foo" should match "foo", not "./foo".
-
-Tue Feb 27 16:38:15 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ev_const_get): retrieve Object's constant if no current
-	  class is available (e.g. defining singleton class for Fixnums).
-
-	* eval.c (ev_const_defined): check Object's constant if no current
-	  class is available (e.g. defining singleton class for Fixnums).
-
-	* time.c (time_timeval): negative time interval should not be
-	  allowed.
-
-	* eval.c (proc_call): ignore block to `call' always, despite of
-	  being orphan or not.
-
-Wed Feb 27 10:16:32 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_yield_0): should check based on rb_block_given_p()
-	  and rb_f_block_given_p().
-
-Tue Feb 27 04:13:45 2001 Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* configure.in (frame-address): --enable-frame-address to allow
-	  __builtin_frame_address() to be used.
-
-	* eval.c (stack_length): use __builtin_frame_address() based on
-	  the macro USE_BUILTIN_FRAME_ADDRESS.
-
-	* gc.c (rb_gc): ditto.
-
-	* gc.c (Init_stack): ditto.
-
-Mon Feb 26 16:20:27 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): call ruby_show_version() just once.
-
-	* dir.c (dir_s_open): returns the value from a block (if given).
-
-Mon Feb 26 14:29:04 2001  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: add C++ rules in addition to C
-	  rules.
-
-Mon Feb 26 00:04:52 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_call): should not modify ruby_block->frame.iter
-	  based on ruby_frame->iter altered by PUSH_ITER().
-
-Mon Feb 26 05:27:52 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/net/telnet.rb: #telnetmode(), #binmode(): bug fix.
-	  thanks to nobu.nakada@nifty.ne.jp.
-
-Mon Feb 26 04:55:50 2001  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: CGI#form(): bug fix.
-	  thanks to MoonWolf <moonwolf@moonwolf.com>.
-
-	* lib/cgi.rb: CGI#rfc1123_date(): improvement.
-	  thanks to Tomoyasu Akita <genzo-@dm4lab.to>.
-
-	* lib/cgi.rb: CGI#header(): improvement for mod_ruby.
-	  thanks to Shugo Maeda <shugo@ruby-lang.org>.
-
-Sun Feb 25 02:45:30 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* file.c (rb_file_s_rename): avoid Cygwin's bug.
-
-Sat Feb 24 23:32:55 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_fd_close): should save current context before
-	  raising exception.
-
-Sat Feb 24 22:14:00 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c (myrename): fix error handling.
-
-Sat Feb 24 13:58:48 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: always close connection on request without
-	  body.
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: change copyright.
-
-Sat Feb 24 03:15:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (set_stdin): preserve original stdin.
-
-	* io.c (set_outfile): preserve original stdout/stderr.
-
-Fri Feb 23 08:28:58 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb: clear read buffer after reopen.
-
-	* lib/net/protocol.rb: refactoring.
-
-	* lib/net/http.rb: split module HTTPHeader from HTTPResponse.
-
-Tue Feb 20 23:45:35 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* process.c: add W* macro if not available.
-
-Tue Feb 20 16:37:58 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: add check for negative time_t for gmtime(3).
-
-	* time.c (time_new_internal): no positive check if gmtime(3) can
-	  handle negative time_t.
-
-	* time.c (time_timeval): ditto.
-
-	* bignum.c (rb_big2long): should not raise RangeError for Bignum
-	  LONG_MIN value.
-
-Mon Feb 19 17:46:37 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_substr): "a"[1,2] should return ""; need
-	  rubicon upgrade.
-
-Mon Feb 19 12:10:36 2001  Triet H. Lai  <thlai@mail.usyd.edu.au>
-
-	* error.c (rb_sys_warning): new function to give warning with
-	  strerror() message.
-
-	* dir.c (rb_glob_helper): better error handling, along with
-	  performance tune.
-
-Mon Feb 19 01:55:43 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (secure_visibility): visibility check for untainted modules.
-
-Mon Feb 19 00:29:29 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* signal.c (sigpipe): sighandler which does nothing.
-
-	* signal.c (trap): set sigpipe function for SIGPIPE.
-
-	* signal.c (Init_signal): default SIGPIPE handler should be
-	  sigpipe function.
-
-Sun Feb 18 15:42:38 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/curses/extconf.rb: add dir_config.
-
-	* missing/flock.c: use fcntl(2) instead of lockf(2).
-
-Sun Feb 18 05:46:03 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: Response#range_length was not debugged.
-
-Sun Feb 18 04:02:03 2001  Yasushi Shoji  <yashi@yashi.com>
-
-	* array.c (rb_ary_subseq): wrong boundary check.
-
-Sun Feb 18 00:09:50 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* win32/win32.c: make file I/O faster on mswin32/mingw32.
-
-	* win32/win32.h: ditto.
-
-	* rubysig.h: ditto.
-
-Sat Feb 17 23:32:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (cond0): integer literal in condition should not be
-	  compared to lineno ($.).
-
-Fri Feb 16 01:44:56 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (set_outfile): f should be the FILE* from the assigning value.
-
-	* ext/socket/socket.c (tcp_s_open): should not give default value
-	  to local_host.
-
-	* time.c (time_s_times): move to Process::times.
-
-	* file.c (rb_file_s_lchmod): new method File::lchmod.
-
-	* file.c (rb_file_s_lchown): new method File::lchown.
-
-Thu Feb 15 11:33:49 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* lib/cgi/session.rb (close): fixed reversed condition.
-
-Thu Feb 15 08:34:14 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_waitall): new method based on a patch from Brian
-	  Fundakowski Feldman <green@green.dyndns.org>.
-
-	* process.c (last_status_set): objectify $? value (Process::Status).
-
-Wed Feb 14 17:28:24 2001  Shugo Maeda <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: supports unknown resp_text_code.
-
-Wed Feb 14 00:44:17 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_s_glob): support backslash escape of metacharacters
-	  and delimiters.
-
-	* dir.c (remove_backslases): remove backslashes from path before
-	  calling stat(2).
-
-	* dir.c (dir_s_glob): call rb_yield directly (via push_pattern) if
-	  block is given to the method.
-
-	* dir.c (push_pattern): do not call rb_ary_push; yield directly.
-
-	* eval.c (blk_copy_prev): reduced ALLOC_N too much.
-
-	* eval.c (frame_dup): ditto.
-
-Tue Feb 13 23:05:38 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dir.c (lstat): should use rb_sys_stat if lstat(2) is not
-	  available.
-
-Tue Feb 13 08:43:10 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_ctl): do not call ioctl/fcntl for f2, if f and f2
-	  have same fileno.
-
-Tue Feb 13 01:13:43 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_load): raise LocalJumpError if unexpected local jumps
-	  appear during load.
-
-	* ext/socket/socket.c (bsock_close_read): don't call rb_thread_fd_close();
-	  it's supposed to be called by io_io_close().
-
-	* ext/socket/socket.c (bsock_close_read): do not modify f and f2.
-
-	* ext/socket/socket.c (bsock_close_write): ditto.
-
-	* ext/socket/socket.c (sock_new): avoid dup(2) on sockets.
-
-	* parse.y (primary): preserve and clear in_single and in_def using
-	  stack to prevent nested method errors in singleton class bodies.
-
-Sun Feb 11 16:00:30 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* eval.c (stack_length): use __builtin_frame_address() only if
-	  GCC and i386 CPU.
-
-	* gc.c (rb_gc, Init_stack): ditto.
-
-	* configure.in: add ac_cv_func_getpgrp_void=yes on DJGPP.
-
-Sat Feb 10 23:43:49 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* hash.c (rb_any_hash): dumped core on machines sizeof(int) != sizeof(long).
-
-Sat Feb 10 23:07:15 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_for_fd): IO::for_fd(fd) - new method.
-
-	* regex.c (PREV_IS_A_LETTER): should not treat c>0x7f as a word
-	  character if -Kn.
-
-Sat Feb 10 00:00:30 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* win32/win32.c (win32_stat): replace stat to enable when pathname
-	  ends with '/' or '\' for mswin32 on Win9X / Win2k.
-
-	* win32/win32.h: ditto.
-
-	* ruby.h: ditto.
-
-	* dir.c (rb_glob_helper): ditto.
-
-	* file.c (rb_stat, rb_file_s_stat, eaccess, check3rdbyte): ditto.
-
-Fri Feb  9 22:54:57 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath): convert '\\' to '/'
-	  before finding executable file path.
-
-Fri Feb  9 17:41:53 2001  Triet H. Lai  <thlai@mail.usyd.edu.au>
-
-	* dir.c (rb_glob_helper): do not follow symbolic links.
-
-Thu Feb  8 21:27:24 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/mkmf.rb (install_rb): fix handling of relative path.
-
-	* lib/mkmf.rb (create_makefile): add srcdir.
-
-Thu Feb  8 02:22:09 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: join HTTPReadResponse into HTTPResponse again.
-
-	* lib/net/http.rb: move http_version() from HTTPRequest to
-	  HTTPResponse.
-
-	* lib/net/protocol.rb: refactoring.
-
-Wed Feb  7 16:27:27 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: split HTTPResponse into HTTPReadResponse
-	  module.
-
-	* lib/net/protocol.rb: add Net::net_private.
-
-	* lib/net/protocol.rb: Socket#reopen takes arg, open_timeout.
-
-Wed Feb  7 16:05:22 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (parse_quotedwords): %w should allow parenthesis escape.
-
-Wed Feb  7 00:57:42 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parse_qstring): %q should allow terminator escape.
-
-	* re.c (rb_reg_options): new method to give an option values.
-
-	* parse.y (cond0): disable special treating of integer literal in
-	  conditional unless option -e is supplied.  changes current
-	  behavior.  experimental.
-
-	* parse.y (cond0): give warning for string/integer literals and
-	  dot operators in conditionals unless option -e is supplied.
-
-	* re.c (rb_reg_equal): all option flags should be same to be equal.
-
-Tue Feb  6 21:30:44 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: call on_connect() on re-opening socket.
-
-	* lib/net/pop.rb: also POP3 can use APOP auth.
-
-Tue Feb  6 20:19:10 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: add HTTP#request.
-
-	* lib/net/http.rb: take HTTP 1.0 server into account (incomplete).
-
-	* lib/net/protocol.rb: timeout for open/read.
-
-	* lib/net/protocol.rb: add Protocol#on_connect,on_disconnect.
-
-Mon Feb  5 23:15:46 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (Init_Exception): make Interrupt a subclass of
-	  SignalException.
-
-Mon Feb 5 00:39:06 2001  KANEKO Naoshi  <wbs01621@mail.wbs.ne.jp>
-
-	* dir.c: use ISXXX() instead of isxxx().
-
-	* dln.c (aix_loaderror): ditto.
-
-	* file.c (rb_file_s_expand_path): ditto.
-
-	* string.c (rb_str_upcase_bang): ditto.
-
-	* win32/win32.c (do_spawn): ditto.
-
-	* win32/win32.c (NtMakeCmdVector): ditto.
-
-	* win32/win32.c (opendir): ditto.
-
-Sat Feb  3 14:44:53 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* configure.in (AC_C_INLINE): check inline attribute.
-
-	* gc.c (is_pointer_to_heap): use inline rather than __inline__.
-
-	* pack.c (hex2num): ditto.
-
-	* ruby.h (rb_class_of, rb_type, rb_special_const_p): ditto.
-
-	* util.c (rb_class_of, rb_type, rb_special_const_p): defined in
-	  ruby.h.
-
-Fri Feb  2 16:14:51 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): returns self, even if its length is
-	  less than 2.
-
-	* eval.c (POP_VARS): propagate DVAR_DONT_RECYCLE, if
-	  SCOPE_DONT_RECYCLE of ruby_scope is set.
-
-Wed Jan 31 22:27:29 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: gcc-2.95.2-7(Cygwin) support.
-	  add -mwin32 if available.
-
-	* cygwin/GNUmakefile: ditto.
-
-Tue Jan 30 17:56:48 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_fetch): new method.
-
-Mon Jan 29 17:36:19 2001  TOYOFUKU Chikanobu  <toyofuku@juice.or.jp>
-
-	* eval.c (rb_eval): nd_iter evaluation should be wrapped by
-	  BEGIN_CALLARGS and END_CALLARGS.
-
-Mon Jan 29 14:25:39 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): return from block jumps directory to
-	  block invoker.
-
-Mon Jan 29 01:40:27 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_independent): should not clear str->orig here.
-	  it's too early.
-
-Fri Jan 26 01:42:40 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: clarify do ambiguity, bit more complex but natural
-	  from my point of view.
-
-Wed Jan 24 14:58:08 2001  Akinori MUSHA  <knu@ruby-lang.org>
-
-	* lib/cgi.rb: fix the problem that when running under mod_ruby
-	  header() outputs only one Set-Cookie line.
-
-Wed Jan 24 01:45:49 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (POP_BLOCK_TAG): call rb_gc_force_recycle() if block has
-	  not been objectified.
-
-	* eval.c (rb_callcc): should nail down block->tag history to avoid
-	  rb_gc_force_recycle().
-
-Tue Jan 23 18:51:57 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): should finalize objects in
-	  deferred_final_list too.
-
-Tue Jan 23 16:10:12 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (os_live_obj): do not list terminated object.
-
-	* gc.c (os_obj_of): ditto.
-
-	* gc.c (rb_gc_mark): support new T_BLKTAG tag.
-
-	* gc.c (obj_free): ditto.
-
-	* eval.c (new_blktag): creation of new block tag, which holds
-	  destination of global jump and orphan status.
-
-	* eval.c (block_pass): break from orphan Proc object will raise a
-	  LocalJumpError exception.
-
-Mon Jan 22 16:33:16 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* mkconfig.rb: autoconf 2.49 support.
-
-Mon Jan 22 00:32:44 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (block_pass): behavior consistency with proc_call(). do
-	  not propagate `break'.
-
-Sat Jan 20 03:54:00 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): fixed serious syntax misbehavior.  do's
-	  preceding was too high.  a block in `foo bar do .. end' should
-	  be passed to `foo', not `bar'.
-
-	* parse.y (block_call): syntax restructure.
-
-Thu Jan 18 04:28:14 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_read): new method to call IO#read from
-	  pathname.  In addition, it accepts third optional argument to
-	  specify starting point.
-
-Wed Jan 17 13:28:26 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: remove DEFS definition.
-
-	* mkconfig.rb: ditto.
-
-	* win32/config.status.in: ditto.
-
-Tue Jan 16 17:00:50 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb: ignore EOFError for read.
-
-	* lib/net/http.rb: user specified header was not used.
-
-Mon Jan 15 16:00:07 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_unpack): should check associated pointer packed by
-	  pack("P").  Thus pointers can be retrieved only from pointer
-	  packed strings.  restriction added.
-
-Sun Jan 14 21:49:28 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* sprintf.c (rb_f_sprintf): simple typo.  binary base should be 2,
-	  not '2'.
-
-	* re.c (rb_reg_s_last_match): should explicitly return nth match.
-
-Sun Jan 14 18:21:30 2001  Usaku Nakamura  <usa@osb.att.ne.jp>
-
-	* win32/config.status.in: add some field.
-
-	* win32/win32.c (isInternalCmd): ignore case for shell's internal
-	  command.
-
-	* win32/win32.c (do_spawn): recognize quoted command line.
-
-Sun Jan 14 04:10:27 2001  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb (adding): too few "yield" in case of arg is
-	  not String/File.
-
-	* lib/net/http.rb: add http request object.
-
-Sat Jan 13 19:39:30 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* re.c (rb_reg_desc): separate RE_OPTION_MULTILINE
-
-	* re.c (rb_reg_options): add RE_OPTION_{POSIXLINE,RE_OPTION_MULTILINE,
-	  RE_OPTION_EXTENDED}
-
-Thu Jan 11 10:45:04 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.h, win32/config.h.in: move NORETURN from win32.h
-	  to config.h.in.
-
-	* win32/config.h.in (inline): renamed from INLINE.
-
-	* djgpp/config.hin (INLINE): removed.
-
-Thu Jan 11 06:45:55 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_dup): should propagate FL_SINGLETON.
-
-	* object.c (inspect_obj): handles the case of no instance variable.
-
-Wed Jan 10 16:15:08 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ruby.h: NORETURN macro is changed for VC++ 6.0.
-
-	* eval.c, intern.h: ditto.
-
-	* djgpp/config.hin, win32/win32.h: ditto.
-
-	* configure.in: ditto.
-
-Wed Jan 10 13:54:53 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* process.c (proc_setuid): use setresuid() if available.
-
-	* process.c (proc_setgid): use setresgid() if available.
-
-	* configure.in: ditto.
-
-Wed Jan 10 01:50:45 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in (AC_C_INLINE): check inline attribute.
-
-	* string.c (rb_str_reverse_bang): forgot to call rb_str_modify().
-
-Tue Jan  9 17:41:40 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_taint): check frozen status before modifying
-	  taint status.
-
-	* object.c (rb_obj_untaint): ditto.
-
-Tue Jan  9 16:22:14 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): new method.
-
-Tue Jan  9 02:16:42 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): clear klass member of
-	  terminating object.
-
-	* eval.c (rb_call): raise exception for terminated object.
-
-Mon Jan  8 21:24:37 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivrem): t2 might be too big for signed long; do
-	  not use rb_int2big(), but rb_uint2big().
-
-Mon Jan  8 21:35:10 2001  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* file.c (path_check_1): should restore modified path.
-
-Mon Jan  8 03:09:58 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (rb_load_fail): new func to report LoadError.
-
-	* ruby.c (load_file): use rb_load_fail.
-
-Sat Jan  6 00:17:18 2001  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* pack.c (pack_pack): avoid infinite loop(pack 'm2').
-
-Fri Jan  5 01:02:17 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_finalize): should enclosed by PUSH_TAG/POP_TAG.
-
-	* gc.c (rb_gc_mark): link 2 of NODE_IFUNC should not be explicitly
-	  marked.  it may contain non object pointer.
-
-Tue Jan  2 00:20:06 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (reg_s_last_match): Regexp::last_match(nth) returns nth
-	  substring of the match  (alternative for $& and $<digit>).
-
-Sun Dec 31 01:39:16 2000  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* eval.c (rb_mod_define_method): wrong comparison for blocks.
-
-Sat Dec 30 19:28:50 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (id2ref): should handle Symbol too.
-
-	* gc.c (id2ref): should print original ptr value
-
-Sat Dec 30 03:14:22 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_iterate): NODE_CFUNC does not protect its data
-	  (nd_tval), so create new node NODE_IFUNC for iteration C
-	  function.
-
-	* eval.c (rb_yield_0): use NODE_IFUNC.
-
-	* gc.c (rb_gc_mark): support NODE_IFUNC.
-
-Fri Dec 29 11:41:55 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (mem_error): prohibit recursive mem_error().
-	  (ruby-bugs-ja:PR#36)
-
-Fri Dec 29 11:05:41 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_fd_writable): should not switch context if
-	  rb_thread_critical is set.
-
-	* eval.c (rb_thread_wait_fd): ditto.
-
-	* eval.c (rb_thread_wait_for): ditto.
-
-	* eval.c (rb_thread_select): ditto.
-
-	* eval.c (rb_thread_join): join during critical section causes
-	  deadlock.
-
-Fri Dec 29 00:38:46 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* m17n.c: new file - core functions of M17N.
-
-Tue Dec 26 18:46:41 2000  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
-
-	* lib/debug.rb: Avoid thread deadlock in debugging stopped thread.
-
-	* lib/debug.rb: Uncleared 'finish' state.
-
-Tue Dec 26 16:53:55 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): remove dvar node by rb_gc_force_recycle()
-	  more eagerly.
-
-	* eval.c (rb_f_binding): recycling should be stopped for outer
-	  scope too.
-
-	* eval.c (proc_new): ditto.
-
-Tue Dec 26 15:45:35 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_inspect): should treat multibyte characters
-	  properly.
-
-Mon Dec 25 17:49:08 2000  K.Kosako  <kosako@sofnec.co.jp>
-
-	* string.c (rb_str_replace_m): unexpected string share happens if
-	  replace is done for associated (STR_NO_ORIG) string.
-
-Tue Dec 26 15:01:53 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_p): should not call rb_io_flush() if rb_defout is not
-	  a IO (T_FILE).
-
-Mon Dec 25 15:52:39 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* stable version 1.6.2 released.
-
-Mon Dec 25 05:11:04 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: version 2.1.2 (some bug fixes).
-
-	* lib/cgi.rb: Regexp::last_match[1] --> $1
-
-	* lib/net/telnet.rb: ditto.
-
-Mon Dec 25 04:43:02 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: does not send HEAD on closing socket.
-
-Mon Dec 25 00:44:48 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_any_cmp): should use rb_str_cmp() if TYPE == T_STRING
-	  and CLASS_OF == rb_cString.
-
-	* string.c (rb_str_new4): should copy class of original too.
-
-Mon Dec 25 00:04:54 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_thread_schedule): initial value of `max' changed to -1.
-
-Mon Dec 25 00:16:14 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_replace_m): copy-on-write replace.
-
-	* parse.y (yylex): should handle => after identifier as well as ==
-	  and =~.
-
-Sat Dec 23 23:55:57 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cstr2inum): Integer("") should not return 0.
-
-Sat Dec 23 11:55:57 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_and): Array#& should preserve original order.
-
-Sat Dec 23 03:44:16 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb: set @closed false in Socket#reopen.
-
-	* lib/net/pop.rb: add POP3.foreach, delete_all.
-
-	* lib/net/pop.rb: add POP3#delete_all.
-
-	* lib/net/http.rb: add HTTP.version_1_1, version_1_2
-
-	* lib/net/http.rb: refactoring.
-
-Fri Dec 22 23:11:12 2000  Ueno Katsuhiro  <unnie@blue.sky.or.jp>
-
-	* eval.c (rb_feature_p): ext might be null.
-
-Fri Dec 22 17:04:12 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* win32/win32.c (myselect): avoid busy loop by adjusting fd_count.
-
-Fri Dec 22 15:07:55 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cstr2inum): prefix like '0x' had removed too much.
-
-Thu Dec 21 13:01:46 2000  Tanaka Akira  <akr@m17n.org>
-
-	* lib/net/ftp.rb (makeport): don't use TCPsocket.getaddress.
-
-Wed Dec 20 12:00:15 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_lshift): should cast up to BDIGIT_DBL.
-
-	* parse.y (yylex): disallow trailing '_' for numeric literals.
-
-	* bignum.c (rb_cstr2inum): allow `_' within converting string.
-
-	* eval.c (specific_eval): should take no argument if block is
-	  supplied.
-
-Tue Dec 19 13:44:50 2000  K.Kosako  <kosako@sofnec.co.jp>
-
-	* io.c (rb_f_p): should flush rb_defout, not stdout.
-
-Tue Dec 19 00:57:10 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_minus): usec might overflow. (ruby-bugs-ja:PR#35)
-
-	* eval.c (rb_obj_extend): Object#extend should take at least one
-	  argument.
-
-	* parse.y (mrhs_basic): should check value_expr($3), not $1.
-
-Mon Dec 18 23:18:39 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* util.c (mblen, __crt0_glob_function): add for multibyte
-	  on DJGPP 2.03.
-
-Mon Dec 18 18:10:30 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_plus): usec might underflow (ruby-bugs-ja:#PR33).
-
-Mon Dec 18 08:11:20 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_set_default): should call rb_hash_modify().
-
-Sat Dec 16 02:58:26 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* eval.c (rb_eval): should clear ruby_errinfo on retry.
-
-	* eval.c (rb_rescue2): ditto.
-
-Thu Dec 14 13:06:18 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* class.c (rb_include_module): prohibit frozen class/module.
-
-	* eval.c (rb_frozen_class_p): make external.
-
-	* intern.h (rb_frozen_class_p): prototyped.
-
-	* intern.h (rb_undef): prototyped not but rb_undef_method()
-	  which is also in ruby.h.
-
-Thu Dec 14 09:20:26 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: support -T1 on ruby 1.6.2
-
-	* lib/cgi.rb: $1 --> Regexp::last_match[1]
-
-	* lib/net/telnet.rb: ditto.
-
-Wed Dec 13 23:27:06 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): handles case statement without expr, which
-	  looks for any TRUE (non nil, non false) when expression.
-
-	* parse.y (primary): case expression should not be compstmt, but
-	  mere expr.
-
-	* parse.y (primary): case without following expression is now
-	  separated rule.
-
-Wed Dec 13 12:41:27 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ruby.c (proc_options): accept "--^M" for DOS line endings.
-
-Tue Dec 12 15:45:42 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (newline_node): cancel newline unification.
-
-Mon Dec 11 23:01:57 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): supports cases `?' precedes EOF and newline.
-
-Mon Dec 11 12:11:25 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (call_end_proc): some frame members were left
-	  uninitialized.
-
-Mon Dec 11 01:14:58 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_fptr_finalize): do not fclose stdin, stdout and
-	  stderr at exit.
-
-Sat Dec  9 17:34:48 2000  Tachino Nobuhiro <tachino@open.nm.fujitsu.co.jp>
-
-	* time.c (time_cmp): should check with kind_of?, not instance_of?
-
-	* time.c (time_eql): ditto.
-
-	* time.c (time_minus): ditto.
-
-Fri Dec  8 17:23:25 2000  Tachino Nobuhiro <tachino@open.nm.fujitsu.co.jp>
-
-	* sprintf.c (rb_f_sprintf): proper string precision treat.
-
-Fri Dec  8 10:44:05 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_remove_cvar): Module#remove_class_variable
-	  added.
-
-Thu Dec  7 17:35:51 2000  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* eval.c (stack_length): don't use __builtin_frame_address() on alpha.
-
-Wed Dec  6 18:07:13 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* djgpp/config.sed, win32/Makefile.sub: typo.
-
-	* eval.c (rb_mod_define_method): avoid VC4.0 warnings.
-
-Wed Dec  6 13:38:08 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_and): tuning, make hash from shorter operand.
-
-Wed Dec  6 01:28:50 2000  SHIROYAMA Takayuki  <psi@fortune.nest.or.jp>
-
-	* gc.c (rb_gc): __builtin_frame_address() should not be used on
-	  MacOS X.
-
-	* gc.c (Init_stack): ditto.
-
-Mon Dec  4 13:44:01 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/jcode.rb: consider multibyte. not /n.
-
-Mon Dec  4 09:49:36 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_inspect): output whole string contents. no more `...'
-
-	* string.c (rb_str_dump): should propagate taintness.
-
-	* hash.c (env_inspect): hash like human readable output.
-
-	* variable.c (rb_ivar_get): prohibiting instance variable access
-	  is too much restriction.
-
-	* class.c (method_list): retrieving information should not be
-	  restricted where $SAFE=4.
-
-	* class.c (rb_obj_singleton_methods): ditto.
-
-	* eval.c (rb_thread_priority): ditto.
-
-	* eval.c (rb_thread_local_aref): ditto.
-
-	* variable.c (rb_obj_instance_variables): ditto.
-
-	* variable.c (rb_mod_const_at): ditto.
-
-	* variable.c (rb_mod_class_variables): ditto.
-
-	* eval.c (rb_exec_end_proc): end_proc should be preserved.
-
-Sat Dec  2 22:32:43 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): || should accept exactly zero argument.
-
-	* parse.y (stmt): multiple right hand side for single assignment
-	  (e.g. a = 1,2) is allowed.
-
-Wed Nov 29 07:55:29 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_long): dumping long should be smaller than 32bit max.
-
-	* marshal.c (w_long): shorter long format for small integers(-123..122).
-
-	* marshal.c (r_long): ditto.
-
-Tue Nov 28 18:10:51 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_mod_define_method): quick hack to implement
-	  on-the-fly method definition.  experimental.
-
-Mon Nov 27 17:00:35 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should not redefine builtin classes/modules
-	  from within wrapped load.
-
-Mon Nov 27 08:57:33 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (call_end_proc): should be isolated from outer block.
-
-Mon Nov 27 00:10:08 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_ctl): call ioctl/fcntl for fptr->f2 too.
-
-	* process.c (rb_f_fork): call rb_thread_atfork() after creating
-	  child process.
-
-	* eval.c (rb_thread_atfork): kill all other threads immediately,
-	  then turn the current thread into the main thread.
-
-Sat Nov 25 23:12:22 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (ruby_run): move calling point of rb_trap_exit after
-	  cleaning up threads.
-
-	* eval.c (ruby_finalize): new function to call EXIT trap, END
-	  procs and GC finalizers.
-
-	* eval.c (rb_exec_end_proc): prevent recursion.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): ditto.
-
-	* signal.c (rb_trap_exit): ditto. made static.
-
-	* process.c (rb_f_fork): should swallow all exceptions from block
-	  execution.
-
-	* process.c (fork_rescue): should call ruby_finalize().
-
-	* parse.y (yycompile): rb_gc() removed.  I don't remember why I put
-	  this here.  test code?
-
-Fri Nov 24 22:03:48 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (EXCL): exclusive information is now stored in an
-	  instance variable.  this enables proper marshal dump.
-
-	* process.c (proc_waitpid): should clear rb_last_status ($?) if
-	  no pid was given by waitpid(2).
-
-Thu Nov 23 01:35:38 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (proc_waitpid2): returns nil if no pid found.
-
-Wed Nov 22 23:45:15 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_eq): new method.  Compares start and end of range
-	  respectively.
-
-Wed Nov 22 11:01:32 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_class_variables): should honor singleton
-	  class variable rule defined yesterday.
-
-Tue Nov 21 23:24:14 2000  Mitsuteru S Nakao  <nakao@kuicr.kyoto-u.ac.jp>
-
-	* numeric.c (flodivmod): missing second operand (typo).
-
-Tue Nov 21 03:39:41 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (marshal_load): marshal format compatibility check
-	  revised.   greater minor revision is UPWARD compatible;
-	  downward compatibility is not assured.
-
-	* eval.c (is_defined): clarify class variable behavior for
-	  singleton classes.  class variables within singleton class
-	  should be treated like within singleton method.
-
-Mon Nov 20 13:45:21 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): set ruby_sourceline before evaluating
-	  exceptions.
-
-	* gc.c (gc_sweep): defer finalization in GC during compilation or
-	  interrupt prohibit section.
-
-	* gc.c (gc_sweep): mark all nodes before sweeping if GC happened
-	  during compilation.
-
-	* eval.c (rb_eval): should treat class variables specially in a
-	  method defined in the singleton class.
-
-Mon Nov 20 10:20:21 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dir.c, win32/win32.c, ruby.h: add rb_iglob().
-
-Mon Nov 20 00:18:16 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_subseq): should return nil for outbound start
-	  index.
-
-	* marshal.c (marshal_load): show format versions explicitly when
-	  format version mismatch happens.
-
-Sun Nov 19 06:13:24 2000  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* marshal.c: use long for string/array length.
-
-	* pack.c (swaps): use bit-or(|) instead of plus(+).
-
-	* pack.c (swapl): ditto.
-
-Sat Nov 18 15:18:16 2000  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* array.c (rb_ary_replace): array size should be in long.
-
-	* array.c (rb_ary_concat): ditto.
-
-	* array.c (rb_ary_hash): ditto.
-
-Sat Nov 18 14:07:20 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: Socket#readline() reads until "\n", not "\r\n"
-
-Fri Nov 17 14:55:18 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* string.c (rb_str_succ): output should be NUL terminated.
-
-Fri Nov 17 02:54:15 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_close): need not to flush before closing.
-
-	* eval.c (rb_thread_join): should preserve last thread status when
-	  THREAD_TO_KILL.
-
-	* eval.c (rb_thread_stop): ditto.
-
-	* io.c (io_fflush): wrap fflush by TRAP_BEG, TRAP_END.
-
-	* eval.c (rb_eval): method defined within singleton class
-	  definition should behave like singleton method about class
-	  variables.
-
-	* eval.c (is_defined): ditto.
-
-Thu Nov 16 23:06:07 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: can call {old,new}_implementation any times.
-
-	* lib/net/http.rb: HTTP#connecting, receive ->
-	  common_oper, connecting.
-
-	* lib/net/http.rb: output warning if u_header includes
-	  duplicated header.
-
-	* lib/net/http.rb: not check Connection:/Proxy-Connection;
-	  always read until eof.
-
-	* lib/net/protocol.rb: detects and catches "break" from block.
-
-Thu Nov 16 16:32:45 2000  Masahiro Tanaka  <masa@stars.gsfc.nasa.gov>
-
-	* bignum.c (bigdivrem): should have incremented ny first.
-
-Thu Nov 16 14:58:00 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/socket/socket.c (sock_new): duplicates file descriptor
-	  with myfddup() on mswin32/mingw32.
-
-	* win32/win32.h: uses system original fdopen().
-
-	* win32/win32.c (myfddup): newly added instead of myfdopen().
-
-	* win32/win32.c (mybind, myconnect, mygetsockname, mygetsockopt,
-	  mylisten, mysetsockopt): now accept file descriptor only, not
-	  SOCKET.
-
-	* win32/win32.c (myaccept, mysocket): return file descriptor,
-	  instead of SOCKET.
-
-Thu Nov 16 10:23:24 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (massign): too strict check for nameless rest argument.
-
-	* eval.c (method_arity): mere * should return -1.
-
-	* eval.c (intersect_fds): should check all FDs in the fd_set.
-
-Wed Nov 15 19:33:20 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_attr): should clear method cache before calling hook.
-
-	* eval.c (rb_eval): ditto.
-
-	* eval.c (rb_mod_modfunc): ditto.
-
-Mon Nov 13 22:44:52 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (rb_bug): print version to stderr.
-
-Mon Nov 13 19:02:08 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* win32/win32.c, io.c, process.c: the exit status of program must be
-	  multiplied 256 on mswin32 and msdosdjgpp(system(), ``).
-
-Sat Nov 11 22:57:38 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): uniformed treatment of -a**b, where a is a
-	  number literal;  hacky but behavior appears more consistent.
-
-	* parse.y (newline_node): reduce newline node (one per line).
-
-	* random.c (rb_f_srand): should be prohibited in safe level
-	  greater than 4.
-
-Sat Nov 11 22:37:36 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* rubysig.h: do not use rb_trap_immediate on win32.
-
-	* rubysig.h: new macros, ATOMIC_TEST, ATOMIC_SET, ATOMIC_INC,
-	  ATOMIC_DEC, RUBY_CRITICAL and new definition of TRAP_BEG,
-	  TRAP_END.
-
-	* gc.c (ruby_xmalloc): should wrap malloc() by RUBY_CRITICAL.
-
-	* signal.c (sighandle): better win32 sig handling.
-
-	* win32/win32.c (flock): better implementation.
-
-	* win32/win32.c (myselect): ditto.
-
-	* win32/win32.c (myaccept): ditto.
-
-	* win32/win32.c (waitpid): ditto.
-
-	* win32/win32.c (myrename): ditto.
-
-	* win32/win32.c (wait_events): support function for win32 signal
-	  handling.
-
-Sat Nov 11 08:34:18 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.31.
-
-	* lib/net/http.rb: initializes header in HTTP, not HTTPCommand.
-
-	* lib/net/protocol.rb, http.rb: rewrites proxy code.
-
-Fri Nov 10 16:15:53 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (rb_num2long): use to_int, not to_i.
-
-	* error.c: T_SYMBOL was misplaced by T_UNDEF.
-
-	* parse.y (yylex): eval("^") caused infinite loop.
-
-Thu Nov  9 14:22:13 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_taint_check): should check IO taintness; no
-	  operation for untainted IO should be allowed in the sandbox.
-
-	* rubyio.h (GetOpenFile): check IO taintness inside using
-	  rb_io_taint_check().
-
-Wed Nov  8 03:08:53 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fflush): ensure fflush(3) would not block by calling
-	  rb_thread_fd_writable().
-
-Tue Nov  7 20:29:56 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.30.
-
-	* lib/net/protocol.rb, smtp.rb: Command#critical_ok -> error_ok
-
-	* lib/net/http.rb: reads header when also "100 Continue".
-
-Tue Nov  7 04:32:19 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivrem): use bit shift to make y's MSB set.
-
-Mon Nov  6  1:22:49 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (warn_print): do not use err_append(), to ensure output
-	  to stderr.
-
-	* error.c (rb_warn): use warn_print() instead of err_print().
-
-	* error.c (rb_warning): ditto.
-
-	* error.c (rb_bug): ditto.
-
-	* eval.c (rb_load): re-raise exceptions during load.
-
-	* time.c (make_time_t): remove useless adjust
-
-Thu Nov  2 18:01:16 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c (rb_f_rand): half-baked float support fixed.  This fix
-	  was originally proposed by K.Kosako <kosako@sofnec.co.jp>.
-
-Tue Oct 31 17:27:17 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c: change digit size to `long|int' if long long is
-	  available.
-
-	* marshal.c (w_object): support `long|int' digits.
-
-	* marshal.c (r_object): ditto.
-
-Sat Oct 28 23:54:22 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): allow =end at the end of file (without a
-	  newline at the end).
-
-Fri Oct 27 10:00:27 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cstr2inum): should ignore trailing white spaces.
-
-	* bignum.c (rb_str2inum): string may not have sentinel NUL.
-
-Fri Oct 27 02:37:22 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cstr2inum): wrongly assigned base to c before
-	  badcheck check.
-
-Thu Oct 26 02:42:50 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb: Command#critical_ok
-
-	* lib/net/smtp.rb: clear critical flag before go to SMTP
-
-Wed Oct 25 12:30:19 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_concat): replacing array might be the receiver
-	  itself.  do not call rb_ary_push_m.
-
-	* array.c (rb_ary_replace): replacing array might be the receiver
-	  itself.  use memmove.
-
-Fri Oct 20 07:56:23 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): ARGSPUSH should not modify args array.
-
-Thu Oct 19 14:58:17 2000  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* pack.c (NUM2U32): should use NUM2ULONG().
-
-Tue Oct 17 17:30:34 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* eval.c (error_print): ruby_sourcefile may be NULL.
-
-Tue Oct 17 16:36:28 2000  Wes Nakamura  <wknaka@pobox.com>
-
-	* pack.c (NATINT_U32): wrong use of sizeof.
-
-Tue Oct 17 12:48:20 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* eval.c (rb_abort): nil check against ruby_errinfo.
-
-	* eval.c (rb_thread_schedule): use FOREACH_THREAD_FROM instead of
-	  FOREACH_THREAD, since curr_thread may be removed from thread ring.
-
-	* eval.c (THREAD_ALLOC): errinfo should be Qnil.
-
-	* eval.c (rb_callcc): th->prev,th->next are now already
-	  initialized in THREAD_ALLOC.
-
-Mon Oct 16 15:37:33 2000  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* eval.c (rb_thread_inspect): tag size was shorter than required.
-
-	* object.c (rb_obj_inspect): ditto.
-
-Mon Oct 16 14:25:18 2000  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* object.c (sym_inspect): used `name' before initialization.
-
-Mon Oct 16 14:06:00 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): use NATINT_U32 for 'l', 'L', and 'N'.
-
-	* pack.c (I32,U32): 32 bit sized integer.
-
-	* pack.c (OFF16,OFF32B): big endian offset for network byteorder.
-
-Mon Oct 16 06:39:32 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: hex-alpha is not [a-h] but [a-f].
-
-Mon Oct 16 01:02:02 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): should not abort on exception if
-	  $SAFE >= 4.
-
-	* parse.y (sym): symbols for class variable names.
-
-Sun Oct 15 01:49:18 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_flock): should accept interrupt.
-
-	* process.c (rb_waitpid): ditto.
-
-	* process.c (rb_waitpid): ditto.
-
-	* process.c (proc_wait): ditto.
-
-	* process.c (proc_waitpid2): wrong recursion.
-
-Sat Oct 14 03:32:13 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_alloc): should not link a new thread in the
-	  live thread ring before initialization.
-
-Fri Oct 13 17:08:09 2000  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: new file.
-
-Thu Oct 12 18:56:28 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/pop.rb: POP3#reset
-
-	* lib/net/http.rb: a code for "Switch Protocol" was wrongly 100.
-
-Thu Oct 12 01:23:38 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: bug fix: CGI::html(): PRETTY option didn't work.
-
-Thu Oct 12 00:03:02 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (sym_inspect): should adjust string length.
-
-	* struct.c (rb_struct_to_s): ditto.
-
-	* struct.c (rb_struct_inspect): ditto.
-
-Wed Oct 11 22:15:47 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* eval.c (rb_thread_inspect): should adjust string length.
-
-	* object.c (rb_any_to_s): ditto.
-
-	* object.c (rb_obj_inspect): ditto.
-
-Wed Oct 11 18:13:50 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_start_0): should check insecure exit.
-
-Wed Oct 11 14:29:51 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb: 2nd arg for ProtocolError#initialize is
-	  optional.
-
-	* lib/net/http.rb: code refining.
-
-Wed Oct 11 11:13:03 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): setter method (e.g. foo=) should always be
-	  public.
-
-	* eval.c (rb_thread_raise): should not raise SecurityError if
-	  exception raised by the interpreter.
-
-	* eval.c (rb_thread_cleanup): skip all THREAD_KILLED threads
-	  before FOREACH_THREAD.
-
-Tue Oct 10 16:11:54 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* dln.c (dln_load): remove unused code for Cygwin.
-
-Tue Oct 10 09:49:23 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (Init_File): FileTest.size should return 0 (not nil) for
-	  empty files.
-
-Sun Oct  8 13:20:26 2000  Guy Decoux  <decoux@moulon.inra.fr>
-
-	* eval.c (POP_SCOPE): not just set SCOPE_DONT_RECYCLE, but do
-	  scope_dup().
-
-Sat Oct  7 15:10:50 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_reverse_bang): unnecessary ALLOCA_N() was
-	  removed.
-
-Fri Oct  6 14:50:24 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/extmk.rb.in, lib/mkmf.rb: remove "DESTDIR =".
-
-	* Makefile.in, win32/Makefile.sub, ruby.1: renamed -X to -C.
-
-Fri Oct  6 12:50:52 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_plus): use to_ary(), not Check_Type().
-
-	* array.c (rb_ary_concat): ditto.
-
-	* gc.c (rb_gc): use __builtin_frame_address() for gcc.
-
-	* eval.c (stack_length): ditto.
-
-	* parse.y (assign_in_cond): stop warning till some better warning
-	  condition will be found.
-
-Thu Oct  5 18:02:39 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_dup): should have propagated taint flag.
-	  (ruby-bugs:#PR64,65)
-
-Wed Oct  4 00:26:11 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (proc_arity): proc{|a|}'s arity should be -1.
-
-Mon Oct  2 05:28:58 2000  akira yamada  <akira@ruby-lang.org>
-
-	* string.c (trnext): minus at the end of pattern.
-
-Sun Oct  1 00:43:34 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in: exp-name was wrong on cygwin and mingw32.
-
-Thu Sep 28 14:57:09 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_compile_pattern): should try must_string calculation
-	  every time.
-
-Tue Sep 19 23:47:44 2000  SHIROYAMA Takayuki  <psi@fortune.nest.or.jp>
-
-	* configure.in, config.guess, config.sub: MacOS X support.
-
-Wed Sep 27 18:40:05 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* stable version 1.6.1 released.
-
-Wed Sep 27 16:13:05 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* mkconfig.rb: variables should be expanded only if /\$\{?\w+\}?/.
-
-Tue Sep 26 18:09:51 2000  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* string.c: include <math.h>
-
-Tue Sep 26 15:59:50 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_dup): metaclasses of class/module should not be
-	  cleared by rb_obj_dup.
-
-Tue Sep 26 02:44:54 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (GC_MALLOC_LIMIT): size extended.
-
-	* regex.c (DOUBLE_STACK): use machine's stack region for regex
-	  stack if its size is small enough.
-
-Mon Sep 25 18:13:07 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c: include <defines.h>.
-
-	* eval.c (rb_add_method): cache mismatch by method
-	  definition. need to clear_cache_by_id every time.
-
-Mon Sep 25 13:31:45 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* win32/win32.c (NtCmdGlob): substitute '\\' with '/'.
-
-Mon Sep 25 00:35:01 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* defines.h: #undef HAVE_SETITIMER on cygwin.
-
-Sun Sep 24 03:01:53 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, http.rb: typo.
-
-Sat Sep 23 07:33:20 2000  Aleksi Niemela  <aleksi.niemela@cinnober.com>
-
-	* regex.c (re_compile_pattern): nicer regexp error messages for
-	  invalid patterns.
-
-Sat Sep 23 03:06:25 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_autoload_load): should not require already
-	  provided features.
-
-Fri Sep 22 15:46:21 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/http.rb: too early parameter expansion in string.
-
-Fri Sep 22 13:58:51 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/extmk.rb.in: don't use default $:
-
-Fri Sep 22 13:42:50 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* regex.c (PUSH_FAILURE_COUNT): avoid casting warning on alpha.
-
-	* regex.c (PUSH_FAILURE_POINT): ditto.
-
-Fri Sep 22 10:16:21 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* win32/config.h.in: add HAVE_TELLDIR, HAVE_SEEKDIR
-
-Thu Sep 21 19:04:34 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/extmk.rb, lib/mkmf.rb (install_rb): check whether libdir is
-	  directory or not.
-
-Thu Sep 21 17:23:05 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_symlink): use HAVE_SYMLINK.
-
-	* file.c (rb_file_s_readlink): use HAVE_READLINK.
-
-	* dir.c (dir_tell): use HAVE_TELLDIR.
-
-	* dir.c (dir_seek): use HAVE_SEEKDIR.
-
-	* configure.in (AC_CHECK_FUNCS): lstat, symlink, readlink,
-	  telldir, seekdir checks added.
-
-	* file.c (lstat): should use stat(2) if lstat(2) is not
-	  available.
-
-Thu Sep 21 15:59:23 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.29.
-
-	* lib/net/http.rb: HTTPReadAdapter -> HTTPResponseReceiver
-
-	* lib/net/http.rb (connecting): response is got in receive()
-
-Thu Sep 21 15:49:07 2000  Wayne Scott  <wscott@ichips.intel.com>
-
-	* lib/find.rb (find): should not follow symbolic links;
-	  tuned performance too.
-
-Wed Sep 20 23:21:38 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (load_file): two Ctrl-D was required to stop ruby at the
-	  beginning of stdin script read.
-
-Wed Sep 20 14:01:45 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_provided): detect infinite load loop.
-
-	* eval.c (rb_provided): too weak filename comparison.
-
-	* eval.c (rb_thread_alloc): avoid recycling still referenced
-	  dvar structures.
-
-	* eval.c (rb_callcc): ditto.
-
-	* eval.c (THREAD_ALLOC): fill dyna_vars field by ruby_dyna_vars.
-
-Tue Sep 19 17:47:03 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* stable version 1.6.0 released.
-
-Tue Sep 19 16:24:52 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (Init_marshal): provide marshal.so no more.
-
-Tue Sep 19 14:01:01 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in, win32/setup.mak: include version number
-	  in RUBY_SO_NAME.
-
-Tue Sep 19 13:07:47 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): was confusing $~ and $_.
-
-Tue Sep 19 13:06:53 2000  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* signal.c (rb_f_kill): signum may be a negative number, should be
-	  treated by signed number.
-
-Tue Sep 19 01:14:56 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_provide): better feature handling.
-
-	* eval.c (rb_f_require): loading ruby library may be partial
-	  state.  checks in rb_thread_loading is integrated.
-
-	* eval.c (rb_provided): better thread awareness.
-
-	* lib/irb/frame.rb: 6 (not 5) parameters for trace_func proc.
-
-	* eval.c (error_print): should print error position even if
-	  get_backtrace() failed.
-
-Sat Sep 16 03:29:59 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_require): rb_provided() was called too early; does
-	  not work well with threads.
-
-	* parse.y (ensure): should distinguish empty ensure and non
-	  existing ensure.
-
-	* file.c (Init_File): extending File by class of FileTest was
-	  serious mistake.
-
-Thu Sep 14 02:46:54 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_yield): array strip should be done in this
-	  function.
-
-Wed Sep 13 17:01:03 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_eq): incomplete value comparison of bignums.
-
-Wed Sep 13 06:39:54 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_class_variables): Module#class_variables added.
-
-Wed Sep 13 06:09:26 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: bug fix: CGI::header(): output status header.
-
-Wed Sep 13 01:09:12 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): allow global variables like '$__a'.
-
-Tue Sep 12 22:28:43 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/socket/extconf.rb: avoid using terrible <netinet/tcp.h>
-	  on cygwin 1.1.5.
-
-Tue Sep 12 16:01:58 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* array.c (rb_ary_unshift_m): typo.
-
-Tue Sep 12 15:37:55 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): stripped array too much, should remove just
-	  for proc_call().
-
-Tue Sep 12 07:05:24 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: version 2.0.0: require ruby1.5.4 or later.
-
-	* lib/net/telnet.rb: version 1.6.0
-
-Tue Sep 12 03:26:07 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (massign): use to_ary to get an array if available.
-
-	* object.c (rb_Array): ditto.
-
-Mon Sep 11 14:24:47 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (ruby_setenv): should not free the element of
-	  origenvironment.
-
-	* parse.y (command_call): kYIELD moved to this rule to allow
-	  'a = yield b'. (ruby-bugs-ja:#PR15)
-
-Mon Sep 11 01:27:54 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_yield_0): proc#call([]) should pass single value to
-	  the block.
-
-	* eval.c (callargs): reduce array allocation.
-
-	* eval.c (massign): precise check for argument number.
-
-Fri Sep  8 10:05:17 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (STR_NO_ORIG): should be FL_USER2.
-
-Thu Sep  7 14:17:51 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cat): should work even for concatenating same
-	  string.
-
-Wed Sep  6 17:06:38 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_cvar_declare): should check superclass's class
-	  variable first.
-
-Wed Sep  6 10:42:02 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-calculate-indent): shift continuing line
-	  if previous line ends with modifier keyword.
-
-	* misc/ruby-mode.el (ruby-parse-region): should not give up if
-	  modifiers are at the end of line.
-
-	* misc/ruby-mode.el (ruby-expr-beg): indented wrongly if modified
-	  statement was size 1.
-
-Wed Sep  6 10:41:19 2000  Kenichi Komiya  <kom@mail1.accsnet.ne.jp>
-
-	* misc/ruby-mode.el (ruby-parse-region): modifier was not handled
-	  well on emacs19.
-
-Tue Sep  5 17:10:12 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_to_s): fixed zone string UTC for utc time object.
-
-Tue Sep  5 00:26:06 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regex.c (re_search): range worked wrongly on bm_search().
-
-Mon Sep  4 13:40:40 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: renamed libruby.a to libruby.{cygwin,mingw32}.a
-	  on cygwin and mingw32.
-
-Sun Sep  3 23:44:04 2000  Noriaki Harada  <tenmei@maoh.office.ne.jp>
-
-	* io.c (NO_SAFE_RENAME): for BeOS too.
-
-Sun Sep  3 11:31:53 2000  Takaaki Tateishi  <ttate@jaist.ac.jp>
-
-	* parse.y (rescue): no assignment was done if rescue body was
-	  empty.
-
-Sat Sep  2 10:52:21 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (call_args,aref_args): block_call can be the last
-	  argument.
-
-	* parse.y (COND_PUSH,COND_POP): maintain condition stack to allow
-	  kDO2 in parentheses in while/until/for conditions.
-
-	* parse.y (yylex): generate kDO2 for EXPR_ARG outside of
-	  while/until/for condition.
-
-Fri Sep  1 10:36:29 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (aref_args,opt_call_args): add block_call to allow a
-	  method without parentheses and with block as a last argument.
-
-	* hash.c (rb_hash_sort): should not return nil.
-
-	* re.c (match_aref): should use rb_reg_nth_match().
-
-	* eval.c (POP_SCOPE): recycled scopes too much
-
-	* eval.c (Init_eval): extend room for stack allowance.
-
-	* eval.c (POP_SCOPE): frees scope too much.
-
-Thu Aug 31 14:28:39 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_mark): T_SCOPE condition must be more precise.
-
-	* eval.c (scope_dup): should not make all duped scope orphan.
-
-Thu Aug 31 10:11:47 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (stmt): allow stmt_rhs to be right hand side of multiple
-	  assignment.
-
-	* time.c (rb_time_timeval): type error should not mention the word
-	  'interval'.
-
-Wed Aug 30 23:21:20 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (rb_num2long): use rb_Integer() instead of independent
-	  convert routine.
-
-	* eval.c (rb_rescue2): now takes arbitrary number of exception types.
-
-	* object.c (rb_convert_type): use rb_rescue2 now to handle NameError.
-
-	* object.c (rb_convert_type): better error message.
-
-Wed Aug 30 17:09:14 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): AlphaNT support.
-
-Wed Aug 30 14:19:07 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (node_assign): should support NODE_CVASGN2 too.
-
-Wed Aug 30 11:31:47 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): add the
-	  arguments checking.
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): add taint
-	  checking. allow String object in the third argument.
-
-Wed Aug 30 10:29:40 2000  Masahiro Tomita  <tommy@tmtm.org>
-
-	* io.c (rb_f_p): flush output buffer.
-
-Tue Aug 29 16:29:15 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (assignable): remove NODE_CVASGN3.
-
-	* parse.y (gettable): remove NODE_CVAR3.
-
-Tue Aug 29 02:02:14 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): handles create_makefile("a/b").
-
-	* ext/extmk.rb.in (create_makefile): ditto
-
-Mon Aug 28 18:43:54 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): now handles class variables.
-
-	* eval.c (rb_eval): class variable behavior revisited.
-
-	* parse.y (assignable): ditto.
-
-	* parse.y (gettable): ditto.
-
-	* regex.c (PUSH_FAILURE_COUNT): push/pop interval count on failure
-	  stack.  this fix is inspired by the Emacs21 patch from Stefan
-	  Monnier <monnier@cs.yale.edu>.
-
-Fri Aug 25 15:24:39 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_cvar_get): should not follow __attached__.
-
-	* variable.c (rb_cvar_set): ditto.
-
-	* variable.c (rb_cvar_declare): ditto.
-
-	* variable.c (mod_av_set): second class variable assignment at the
-	  toplevel should not give warning.
-
-Fri Aug 25 01:18:36 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (next_argv): prepare path for open file.
-
-	* string.c (rb_str_setter): moved from io.c.
-
-	* io.c (next_argv): filename should be "-" for refreshed ARGF.
-
-Thu Aug 24 15:27:39 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/socket/socketport.h: use `extern int h_errno' if needed.
-
-Sat Aug 19 01:34:02 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/sdbm/_sdbm.c (sdbm_prep): flags should be or-ed by O_BINARY on
-	  Win32 too.
-
-	* ext/sdbm/_sdbm.c (makroom): fill hole with 0 on Win32 too.
-
-Fri Aug 18 13:23:59 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_eval): should preserve and clear $! value before
-	  compilation.
-
-	* eval.c (eval): ditto.
-
-Fri Aug 18 11:06:19 2000  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/socket/socket.c (s_accept): start GC on EMFILE/ENFILE.
-
-Thu Aug 17 16:04:48 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): should clear ruby_errinfo.
-
-Thu Aug 17 04:26:31 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.27.
-
-	* lib/net/protocol.rb: writing methods returns written byte size.
-
-	* lib/net/smtp.rb: send_mail accepts many destinations.
-
-Wed Aug 16 00:43:47 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_s_times): use CLK_TCK for HZ if it's defined.
-
-Tue Aug 15 17:30:59 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (frame_dup): should set flag FRAME_MALLOC after
-	  argv allocation.
-
-	* eval.c (blk_free): should not free argv if GC was called before
-	  frame_dup.
-
-Tue Aug 15 16:08:40 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: add ac_cv_func_times=yes for mingw32.
-
-	* win32/win32.c (mytimes): typo.
-
-Tue Aug 15 01:45:28 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_eof): should return true at the end of ARGF without
-	  checking stdout if arguments are given.
-
-Mon Aug 14 10:34:32 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_thread_status): status should return false for normal
-	  termination, nil for termination by exception.
-
-Fri Aug 11 15:43:46 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_undef): give warning for undefining __id__, __send__.
-
-Thu Aug 10 08:05:03 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_callcc): returned current thread instead of
-	  continuation wrongly.
-
-Thu Aug 10 05:40:28 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/extmk.rb.in: $CPPFLAGS should be initialized.
-
-	* ext/tcltklib/depend: add stubs.o.
-
-	* ext/tcltklib/extconf.rb: use $CPPFLAGS instead of $CFLAGS.
-
-Wed Aug  9 16:31:48 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_callcc): thread status for continuations must be
-	  THREAD_KILLED, otherwise thread_free() breaks other threads.
-
-Wed Aug  9 13:24:25 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* win32/win32.[ch]: emulate rename(2).
-
-Tue Aug  8 14:01:46 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/tcltklib/tcltklib.c: support --enable-tcltk_stubs
-
-	* ext/tcltklib/extconf.rb: ditto.
-
-	* ext/tcltklib/stubs.c: created. examine candidate shared libraries.
-
-Mon Aug  7 13:59:12 2000  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.h (CLONESETUP): should copy flags before any potential
-	  object allocation.
-
-	* regex.c (re_match): check for stack depth was needed.
-
-Sat Aug  5 16:43:43 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* djgpp/*: convert DOS line endings to UNIX style.
-
-	* djgpp/config.status: rename to config.sed for SFN.
-
-	* lib/ftools.rb (compare, safe_unlink, chmod): avoid warnings.
-
-	* lib/ftools.rb (move): typo. not `tpath', but `to'.
-
-Fri Aug  4 23:26:48 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (proc_call): gives warning if a block is supplied.
-
-	* eval.c (rb_eval): no warning for discarding if an alias for the
-	  method is already made.
-
-Fri Aug  4 16:32:29 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_reject_bang): returns nil if no element removed.
-
-	* hash.c (rb_hash_reject_bang): returns nil if no element removed.
-
-Thu Aug  3 19:44:26 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_fd_writable): should return integer value.
-
-	* array.c (rb_ary_assoc): search array element whose length is
-	  longer than 0 (not 1).
-
-Wed Aug  2 18:27:47 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_wait_fd): prohibit thread context switch
-	  during compilation.
-
-	* eval.c (rb_cont_call): prohibit Continuation#call across threads.
-
-Wed Aug  2 08:22:04 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (rb_gc): clear malloc_memories to zero, to avoid potential
-	  super frequent GC invocation. (ruby-bugs:#PR48)
-
-	* gc.c (rb_gc): only add_heap() if GC trigger condition is
-	  satisfied.
-
-Tue Aug  1 16:41:58 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (proc_options): global load path setting moved from
-	  ruby_prog_init().
-
-	* ruby.c (incpush): renamed.  push path entry at the END of the
-	  load path array.  This makes -I directories sorted in order in
-	  the arguments.
-
-Sat Jul 29 23:42:04 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dir.c (dir_each): should check whether dir is closed during the
-	  block execution. (ruby-bugs:#PR47)
-
-Sat Jul 29 21:57:30 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ruby.c (rubylib_mangle): provide another buffer for the result.
-
-Wed Jul 26 10:09:01 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: set SOLIBS to LIBS on Cygwin.
-
-	* configure.in: LIBRUBY_SO='$(RUBY_INSTALL_NAME)'.$target_os.dll
-	  on cygwin and mingw32. ruby-cygwin.dll is bad. why?
-
-Wed Jul 26 10:04:03 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (gc_sweep): avoid full scan during compilation.
-
-	* gc.c (rb_gc): add heap during no gc period (including
-	  compilation).
-
-Tue Jul 25 19:03:04 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* cygwin/GNUmakefile: use puts instead of print, because
-	  Cygwin DLL's behavior is changed(or bug?).
-
-	* configure.in: LIBRUBY_SO='$(RUBY_INSTALL_NAME)'-$target_os.dll
-	  on cygwin and mingw32.
-
-	* cygwin/GNUmakefile: ditto.
-
-	* Makefile.in: $(SOLIBS) should be put after dmyext.@OBJEXT@.
-
-	* instruby.rb: install $(LIBRUBY) to libdir
-	  if $(LIBRUBY) != $(LIBRUBY_A_).
-
-Tue Jul 25 15:16:00 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_p): redirect to $defout.
-
-Mon Jul 24 18:52:55 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* win32/win32.c (win32_getenv): should remove `static'.
-
-	* ruby.c (rubylib_mangle): support "/hoge;/foo"
-
-Mon Jul 24 10:28:55 2000  GOTO Kentaro  <gotoken@math.sci.hokudai.ac.jp>
-
-	* string.c (rb_str_count): raise exception if no argument is
-	  given.
-
-Sun Jul 23 12:55:04 2000  Dave Thomas  <Dave@Thomases.com>
-
-	* string.c (rb_str_rindex): Support negative end position.
-
-Fri Jul 21 17:35:01 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (aref_args): command_call now be permitted as
-	  aref_args.
-
-	* process.c (proc_getpriority): getpriority(2) may return valid
-	  negative number.  use errno to detect error.
-
-	* marshal.c (dump_ensure): dumped string should be tainted if
-	  any among target objects is tainted.
-
-	* marshal.c (r_regist): restored object should be tainted if and
-	  only if the source is a file or a tainted string.
-
-Wed Jul 19 15:14:04 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (bigdivrem): should use rb_int2big(), not rb_uint2big().
-
-Tue Jul 18 14:58:30 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (ruby_options): should treat SystemExit etc. properly.
-
-	* parse.y (yycompile): should check compile_for_eval, not
-	  ruby_in_eval.
-
-Mon Jul 17 04:29:50 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/mkmf.rb: converts extension of $objs into $OBJEXT.
-
-Sun Jul 16 03:02:34 2000  Dave Thomas <dave@thomases.com>
-
-	* lib/weakref.rb: Change to use new ObjectSpace calls.
-
-Sat Jul 15 21:59:58 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): should not redefine __id__ nor __send__.
-
-	* gc.c (define_final): integrate final.rb features into the
-	  interpreter.  define_finalizer and undefine_finalizer was
-	  added to ObjectSpace.  plus, add_finalizer, remove_finalizer,
-	  and call_finalizer are deprecated now.
-
-Sat Jul 15 01:32:34 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_mod_method): implements unbound method.
-
-	* eval.c (Init_eval): should prohibit `module_function' for class
-	  Class.
-
-Fri Jul 14 17:19:59 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* cygwin/GNUmakefile.in: use miniruby instead of sed.
-
-Fri Jul 14 12:49:50 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (argf_eof): need to check stdin, when next_p == -1.
-
-	* io.c (read_all): use io_fread() instead of fread(3).
-
-	* io.c (io_reopen): should clearerr FILE if fd < 3.
-
-	* re.c (rb_reg_match_m): the result is exported, so it should be
-	  declared as busy.
-
-	* eval.c (rb_eval): should preserve errinfo even if return, break,
-	  etc. is called in rescue clause.
-
-	* instruby.rb: install irb too.
-
-Wed Jul 12 15:32:57 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_const_get): constants for builtin classes must
-	  have higher priority than constants from included modules at
-	  Object class.
-
-	* bignum.c (bigdivrem): small embarrassing typo.
-
-Wed Jul 12 15:06:28 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): use rb_const_get_at().
-
-	* variable.c (top_const_get): retrieve toplevel constants only,
-	  not ones of Object (and its included modules) in general.
-
-Wed Jul 12 15:04:11 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.26.
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb:
-	  add module Net::NetPrivate and its inner classes
-	  {Read,Write}Adapter, Command, Socket,
-	  SMTPCommand, POP3Command, APOPCommand, HTTPCommand
-
-Wed Jul 12 13:10:30 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (bigdivrem): defer bignorm().
-
-	* bignum.c (bignorm): accepts accidental fixnums.
-
-Tue Jul 11 16:54:17 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): `@<digit>' is no longer a valid instance
-	  variable name.
-
-Tue Jul 11 01:51:50 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (rb_big_divmod): should not use Integer(float) for
-	  the right operand.
-
-	* bignum.c (rb_big_remainder): ditto.
-
-	* bignum.c (rb_big_modulo): ditto.
-
-Mon Jul 10 15:27:16 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* io.c (pipe_finalize): should set rb_last_status when pclose().
-
-Mon Jul 10 09:07:54 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* error.c (rb_bug): print version number and such too.
-
-Sat Jul  8 23:08:40 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_start_0): should copy previous scopes to
-	  prevent rb_gc_force_recycle().
-
-Fri Jul  7 23:36:36 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/addrinfo.h: move IN_EXPERIMENTAL and IN_LOOPBACKNET
-	  definitions to ext/socket/sockport.h.
-
-	* ext/socket/extconf.rb: add getservbyport() and arpa/inet.h check.
-
-	* ext/socket/getaddrinfo.c (getaddrinfo): SOCK_RAW may not be
-	  defined (ex. BeOS, Palm OS 2.x or before).
-
-	* ext/socket/getnameinfo.c (getnameinfo): getservbyport() may not
-	  exist (ex. BeOS, Palm OS).
-
-	* ext/socket/sockport.h: add IN_EXPERIMENTAL, IN_CLASSA_NSHIFT,
-	  IN_LOOPBACKNET, AF_UNSPEC, PF_UNSPEC and PF_INET.
-
-Fri Jul  7 03:30:00 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (aref_args): should allow Hash[:a=>2] etc.
-
-	* numeric.c (fix_aref): convert index by NUM2INT, not FIX2INT.
-	  (ruby-bugs:#PR37)
-
-	* time.c (time_localtime): should prohibit for frozen time.
-
-	* time.c (time_gmtime): ditto.
-
-Thu Jul  6 19:12:12 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_file_s_open): should not terminate fptr; just clear it.
-
-	* ruby.c (proc_options): should not call require_libraries()
-	  twice.
-
-	* ruby.c (require_libraries): clear req_list_head.next after
-	  execution.
-
-Thu Jul  6 13:51:57 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* object.c (rb_to_id): name may not be symbol nor fixnum.
-
-	* struct.c (rb_struct_s_def): name may be nil.
-
-Thu Jul  6 02:09:06 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (bigdivrem): new function to return remainder.
-
-	* numeric.c (fixdivmod): now returns modulo, not remainder.
-
-	* numeric.c (flodivmod): ditto.
-
-	* bignum.c (bigdivmod): ditto.
-
-	* numeric.c (num_modulo): new method; alias to '%'.
-
-Thu Jul  6 00:51:43 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* win32/win32.c (NtCmdGlob): patterns should be separated and
-	  NUL terminated.
-
-Wed Jul  5 22:27:56 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* cygwin/GNUmakefile: use ruby.def to make rubycw.dll.
-
-	* ext/extmk.rb.in: create target.def.
-
-	* lib/mkmf.rb: ditto.
-
-Wed Jul  5 09:47:14 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_arg): Time::local, Time::gm now take 7th optional
-	  argument for usec.
-
-	* numeric.c (num_ceil, etc): default ceil, floor, round, truncate
-	  implementation for Numeric, using `to_f'.
-
-	* io.c (rb_io_reopen): clear fptr->path after free() to prevent
-	  potential GC crash.
-
-	* io.c (rb_file_s_open): terminate fptr unless null.
-
-	* io.c (rb_file_initialize): ditto.
-
-	* lib/tempfile.rb: specify FILE::CREAT|File::EXCL to open for
-	  better security.
-
-	* numeric.c (flo_truncate): new method.
-
-Wed Jul  5 01:02:53 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/extmk.rb.in: join ' ' -> join(' ').
-
-	* lib/mkmf.rb: ditto.
-
-Tue Jul  4 13:51:29 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/dbm/dbm.c: add methods added to Hash in 1.5.x.
-
-	* ext/gdbm/gdbm.c: ditto.
-
-	* ext/sdbm/init.c: ditto.
-
-	* eval.c (proc_call): args may be Qundef (means no argument), do
-	  not call TYPE() for args.
-
-Tue Jul  4 13:20:56 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/extmk.rb.in: make command line must be single-quoted.
-	  $(RUBY_INSTALL_NAME) is command substitution in the POSIX sh.
-
-Tue Jul  4 13:16:02 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* util.c (rb_type): should add T_UNDEF.
-
-Tue Jul  4 09:30:35 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (here_document): supports EOF right after terminator.
-
-	* random.c (rb_f_rand): argument is now optional (rand(max=0)).
-
-Tue Jul  4 01:50:49 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* win32/ruby.def: remove ruby_mktemp.
-
-Tue Jul  4 01:27:13 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_rescue2): new function to rescue arbitrary exception.
-
-	* numeric.c (do_coerce): should catch NameError explicitly.
-
-Tue Jul  4 00:15:23 2000  Dave Thomas  <Dave@thomases.com>
-
-	* numeric.c (Init_Numeric): forgot to register Numeric#remainder.
-
-Mon Jul  3 23:46:56 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/win32.c (myselect, myaccept): disable interrupt while
-	  executing accept() or select() to avoid Ctrl-C causes
-	  "unknown software exception (0xc0000029)".
-
-Mon Jul  3 18:35:41 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* lib/mkmf.rb: use null device if it exists for cross-compiling.
-
-Mon Jul  3 18:19:51 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.26.
-
-	* lib/net/protocol.rb (finish): do nothing unless active.
-
-	* lib/net/http.rb: HTTP#{get,post}2 again (for new impl).
-
-Mon Jul  3 16:47:22 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* cygwin/GNUmakefile: librubys.a -> lib$(RUBY_INSTALL_NAME)s.a
-
-	* configure.in: use AC_CANONICAL_{HOST,TARGET,BUILD}.
-
-Mon Jul  3 13:15:02 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (fix_divmod): x * d + m = y where d, m = x.divmod(y).
-
-	* bignum.c (rb_big_divmod): ditto.
-
-	* numeric.c (fixdivmod): does not depend C's undefined %
-	  behavior.  adopt to fmod(3m) behavior.
-
-	* numeric.c (flo_mod): modulo now reserves fmod(3m) behavior.
-
-	* numeric.c (num_remainder): 'deprecated' warning.
-
-Mon Jul  3 10:27:28 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: use AC_CANONICAL_SYSTEM.
-
-Sun Jul  2 21:17:37 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: support without --enable-shared for cygwin/mingw32.
-
-	* cygwin/GNUmakefile: ditto.
-
-	* ext/extmk.rb.in: use null device if it exists for cross-compiling.
-
-	* lib/mkmf.rb: ditto.
-
-	* util.c (ruby_mktemp): remove unused ruby_mktemp().
-
-Sun Jul  2 14:18:04 2000  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* eval.c (TMP_PROTECT_END): tmp__protect_tmp may be NULL.
-
-Sun Jul  2 03:37:50 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.25.
-
-	* lib/net/protocol.rb (each_crlf_line): beg = 0 is needed in adding{}
-
-	* lib/net/smtp.rb: allow String for to_addr of SMTP#sendmail
-
-Sat Jul  1 15:22:35 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (fix_rshift): should handle shift value more than
-	  sizeof(long).
-
-Sat Jul  1 15:22:35 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): the value from RTEST() is not valid Ruby
-	  object.  result should be either true or false.
-
-Sat Jul  1 09:30:06 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* re.c (rb_reg_initialize): was freeing invalid pointer.
-
-Sat Jul  1 03:25:56 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (call_args): command_call can be the last argument of
-	  call_args.  It had to be the only argument.
-
-	* re.c (rb_reg_s_quote): should not dump core even for unsane mbc
-	  string.
-
-Fri Jun 30 01:36:20 2000  Aleksi Niemela  <aleksi.niemela@cinnober.com>
-
-	* parse.y (f_norm_arg): better, nicer error message.
-
-Thu Jun 29 07:45:33 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (udp_send): destination may be packed
-	  struct sockaddr.
-
-	* object.c (rb_Integer): Integer(nil) should be invalid, on the
-	  other hand, nil.to_i is OK.
-
-Wed Jun 28 17:26:06 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (ip_recvfrom): udp_recvfrom and tcp_recvfrom
-	  is merged and moved to IPSocket#recvfrom.
-
-	* ext/socket/socket.c (sock_s_getaddrinfo): family can be a
-	  strings such as "AF_INET" etc.
-
-	* ruby.c (require_libraries): . and RUBYLIB added to $load_path
-	  just before -r procedure.
-
-	* ruby.c (proc_options): -e, - did not exec -r.
-
-Wed Jun 28 14:52:28 2000  Koga Youichirou <y-koga@mms.mt.nec.co.jp>
-
-	* config.sub: NetBSD/hpcmips support.
-
-Wed Jun 28 10:11:06 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c: gc trigger threshold changed; GC_NEWOBJ_LIMIT removed,
-	  FREE_MIN is increased to 4096.
-
-Tue Jun 27 22:39:28 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.24.
-
-	* lib/net/protocol.rb: modified each_crlf_line again.
-
-	* lib/net/protocol.rb: do_write_beg,do_write_end -> writing{}
-	  do_write_do -> do_write
-
-	* lib/net/http.rb: can make proxy connection by passing
-	  addresses to HTTP.new, start.
-
-	* lib/net/http.rb: HTTP.new_implementation, old_implementation:
-	  can use 1.2 implementation of head, get, post, put.
-	  (see document)
-
-Tue Jun 27 12:05:10 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32.c (myfdclr): new function.
-
-	* win32.h: add FD_CLR.
-
-Mon Jun 26 23:41:41 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ruby.h: add cast for ANSI style.
-
-	* gc.c (rb_data_object_alloc): use RUBY_DATA_FUNC.
-
-Mon Jun 26 22:20:03 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/win32.c (is_socket, extract_file_fd): New function.
-
-	* win32/win32.c (myfdopen): use is_socket().
-
-	* win32/win32.c (myselect): return non socket files immediately
-	  if file and socket handles are mixed.
-
-Mon Jun 26 16:21:30 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_schedule): wait_for cleared too early.
-
-Mon Jun 26 09:15:31 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c: remove obsolete 'F', 'D' specifiers.
-
-Sun Jun 25 00:55:03 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/socket.c (sock_s_getnameinfo): `res' would not
-	  be assigned if TYPE(sa) == T_STRING.
-
-Sat Jun 24 14:36:29 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* config*.dj, configure.bat, top.sed: move to djgpp/.
-
-Sat Jun 24 02:34:17 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (load_file): call require_libraries() here to let
-	  debug.rb work properly.
-
-Fri Jun 23 22:34:51 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* bignum.c (rb_big_lshift): reorder xds assignment to avoid
-	  reusing `x' as `len' by VC++ 6.0 SP3 compiler with -Ox switch.
-
-Fri Jun 23 01:11:27 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_substr): should return empty string (""),
-	  if beg == str.size and len == zero, mostly for convenience and
-	  backward compatibility.
-
-	* parse.y (new_super): should tweak block_pass node for super too.
-
-	* string.c (rb_str_split_m): last split element should not be nil,
-	  but "" when limit is specified.
-
-Thu Jun 22 17:27:46 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_substr): str[n,m] now returns nil when n equals
-	  to str.size.
-
-Thu Jun 22 13:49:02 2000  Uechi Yasumasa <uechi@ryucom.ne.jp>
-
-	* lib/net/ftp.rb: support resuming.
-
-Thu Jun 22 13:37:19 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* eval.c (rb_thread_sleep_forever): merge pause() macro.
-
-Wed Jun 21 08:49:04 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): should not raise exception just by defining
-	  singleton class.
-
-Wed Jun 21 01:18:03 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.h: two macros RUBY_DATA_FUNC and RUBY_METHOD_FUNC are added
-	  to make writing C++ extensions easier.
-
-	* array.c (rb_ary_dup): internal classes should not be shared by dup.
-
-	* hash.c (rb_hash_dup): ditto.
-
-	* object.c (rb_obj_dup): ditto.
-
-	* string.c (rb_str_dup): ditto.
-
-	* error.c (Init_Exception): renamed NotImplementError to
-	  NotImplementedError.
-
-Tue Jun 20 16:22:38 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (make_time_t): bug in DST boundary.
-
-Tue Jun 20 10:54:19 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: add eval sitedir.
-
-Tue Jun 20 06:14:43 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: change: version syntax. old: x.yz, now: x.y.z
-
-	* lib/net/telnet.rb: ditto.
-
-Tue Jun 20 00:37:45 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_kcode_m): Regexp#kcode returns nil for code unfixed
-	  regexp object.
-
-	* bignum.c (bigdivmod): bignum zero check was wrong.
-
-Mon Jun 19 10:48:28 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_cvar_set): forgot to add security check for class
-	  variable assignment.
-
-Sun Jun 18 22:49:13 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: single quoted sitedir.
-
-	* mkconfig.rb: add DESTDIR for cross-compiling.
-
-	* lib/mkmf.rb: add DESTDIR.
-
-	* ruby.c (load_file): force binmode if fname includes ".exe"
-	  on DOSISH.
-
-Sat Jun 17 23:22:17 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c (rb_f_sprintf): should ignore negative precision given
-	  by <%.*>.
-
-	* sprintf.c (rb_f_sprintf): should allow zero precision.
-
-Sat Jun 17 03:13:29 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_localtime): avoid unnecessary call of localtime.
-
-	* time.c (time_gmtime): avoid unnecessary call of gmtime.
-
-	* process.c (proc_wait2): new method.
-
-	* process.c (proc_waitpid): second argument made optional.
-
-	* process.c (proc_waitpid2): new method.
-
-Sat Jun 17 00:05:00 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_clone): should initialize member fields.
-
-Fri Jun 16 22:49:34 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_rewind): set lineno to zero.
-
-Fri Jun 16 22:47:47 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.23.
-
-	* lib/net/protocol.rb: too many CRLF in last line.
-
-Fri Jun 16 21:23:59 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: add pause(2) checking.
-
-	* eval.c: define pause() if missing.
-
-Fri Jun 16 18:41:58 2000  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* process.c (proc_setsid): BSD-style setpgrp() don't return
-	  process group ID, but 0 or -1.
-
-Fri Jun 16 16:23:35 2000  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* file.c (rb_stat_inspect): gives detailed information;
-	  compatibility with ruby-1.4.x.
-
-Fri Jun 16 05:18:45 2000  Yasuhiro Fukuma  <yasuf@bsdclub.org>
-
-	* configure.in: FreeBSD: do not link dummy libxpg4 which was
-	  merged into libc.
-
-Fri Jun 16 03:17:36 2000  Satoshi Nojo  <nojo@t-samukawa.or.jp>
-
-	* ext/dbm/dbm.c (fdbm_length): use GetDBM. empty?, [] too.
-
-	* ext/gdbm/gdbm.c (fgdbm_length): ditto.
-
-	* ext/sdbm/init.c (fsdbm_length): ditto.
-
-Fri Jun 16 01:57:31 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_sleep_forever): pause(2) instead of sleep(3).
-
-Thu Jun 15 10:46:36 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_sub_bang): should propagate taintness from
-	  replacement string.
-
-Wed Jun 14 17:01:41 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* rubytest.rb: add CONFIG['EXEEXT'] to the executable file name.
-
-Wed Jun 14 14:50:00 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_f_sub): assign to $_ only if modification happens.
-
-	* string.c (rb_f_gsub): ditto.
-
-	* string.c (rb_f_chop): ditto.
-
-	* string.c (rb_f_chomp): ditto.
-
-	* io.c (io_reopen): preserve file position by ftell/fseek, if io
-	  is a seekable.
-
-	* eval.c (method_arity): wrong arity number for the methods with
-	  optional arguments.
-
-	* time.c (make_time_t): opposite timezone shift (should be negative).
-
-Wed Jun 14 14:07:38 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* io.c: typo(ig/if).
-
-	* re.c: typo(re/reg). add rb_reg_check().
-
-	* time.c: remove unneeded declare(daylight, timezone).
-
-	* configure.in: add include <time.h> when daylight checking.
-
-Wed Jun 14 11:36:52 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* marshal.c (r_object): modified for symbols.
-
-	* marshal.c (w_object): ditto.
-
-Wed Jun 14 10:04:58 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_memcmp): should compare according to ruby_ignorecase.
-
-	* string.c (rb_str_cmp): use rb_memcmp.
-
-	* string.c (rb_str_index): ditto.
-
-	* string.c (rb_str_rindex): ditto.
-
-	* string.c (rb_str_each_line): ditto.
-
-Wed Jun 14 04:58:53 2000  Dave Thomas  <dave@thomases.com>
-
-	* io.c (rb_io_set_lineno): should have returned VALUE, not
-	  integer.
-
-Wed Jun 14 09:29:42 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_dup): dup should always propagate taintness.
-
-Wed Jun 14 00:50:14 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: read_multipart(): if no content body then raise EOFError.
-
-Tue Jun 13 11:46:17 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* process.c (proc_setsid): try implement it using setpgrp() and
-	  ioctl(fd, TIOCNOTTY, NULL).
-
-	* re.c (rb_reg_prepare_re): magic variable $= should affect regex
-	  pattern match.
-
-	* time.c (make_time_t): use tm.tm_gmtoff if possible.
-
-	* time.c (time_zone): use tm.tm_zone if available.
-
-Tue Jun 13 01:50:57 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.22.
-
-	* lib/net/http.rb: HTTPResponse#body returns body.
-
-Mon Jun 12 23:41:54 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in (daylight): avoid GCC optimization.
-
-Mon Jun 12 19:02:27 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: cygwin has strange timezone.
-
-	* time.c (time_zone): use tzname and daylight.
-
-Sat Jun 10 23:10:32 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_seek): whence is optional, default is SEEK_SET.
-
-Fri Jun  9 17:00:29 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.21.
-
-	* lib/net/http.rb: exception is raised with response object.
-
-Fri Jun  9 15:11:35 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (make_time_t): supports daylight saving time.
-
-	* eval.c (rb_thread_safe_level): should retrieve current $SAFE
-	  value if a thread is the current thread.
-
-Thu Jun  8 14:25:45 2000  Hiroshi Igarashi  <iga@ruby-lang.org>
-
-	* lib/mkmf.rb: add target `distclean' in Makefile for extlib.
-	  target `clean' doesn't remove Makefile.
-
-Thu Jun  8 13:34:03 2000  Dave Thomas  <dave@thomases.com>
-
-	* numeric.c: add nan?, infinite?, and finite? to Float
-
-Thu Jun  8 00:31:04 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* regex.h: export re_mbctab properly on cygwin.
-
-	* dln.c: use dlopen instead of LoadLibrary on cygwin.
-
-Thu Jun  8 13:41:34 2000  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* file.c (rb_file_s_basename): might dump core.
-
-Tue Jun  6 03:29:12 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dir.c (dir_foreach): now returns nil for consistency.
-
-	* bignum.c (bigdivmod): modulo by small numbers was wrong.
-
-Mon Jun  5 00:18:08 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* bignum.c: avoid conflict with USHORT on mingw32.
-
-Mon Jun  5 00:13:35 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* eval.c (rb_thread_schedule): =/== typo.
-
-Sun Jun  4 03:17:36 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: improve: CGI::pretty()
-
-Sun Jun  4 02:01:10 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* lib/mkmf.rb: do not need to add -L$(topdir) in --enable-shared case.
-
-Sat Jun  3 13:50:06 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (rb_id2name): should support constant attrset
-	  identifiers.
-
-	* bignum.c (rb_big_eq): Bignum#== should not raise exception.
-
-Fri Jun  2 11:24:48 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_popen): open with a block returns the value from the
-	  block.  old behavior was back.
-
-Fri Jun  2 00:42:31 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-
-	* eval.c (rb_thread_cleanup): should clear priority for thread
-	  termination.
-
-Thu Jun  1 22:39:41 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.20.
-
-	* lib/net/http.rb: wrongly closed the socket twice
-	  when no Content-Length: was given.
-
-Thu Jun  1 00:59:15 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_yield_0): convert Qundef to [].
-
-Wed May 31 20:45:59 2000  Dave Thomas  <Dave@Thomases.com>
-
-	* string.c (rb_str_slice_bang): wrong argument number.
-
-Wed May 31 12:37:04 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_exec_end_proc): print error message from END procs.
-
-Wed May 31 04:06:41 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: change: CGI#out() if "HEAD" == REQUEST_METHOD then
-	  output only HTTP header.
-
-Wed May 31 01:54:21 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_schedule): set main_thread->status to
-	  THREAD_TO_KILL, before raising deadlock error.
-
-	* eval.c (rb_thread_deadlock): if curr_thread == main_thread, do
-	  not call rb_thread_restore_context()
-
-Tue May 30 23:33:41 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* lib/mkmf.rb (create_makefile): add $(TARGET).ilk and *.pdb
-	  to cleanup files for mswin32.
-
-Mon May 29 10:41:10 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (rb_file_s_basename): should propagate taintness.
-
-Sun May 28 21:37:13 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* eval.c: bug fix: DLEXT2.
-
-Sun May 28 19:21:43 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* win32/win32.c: use ruby's glob.
-
-	* dir.c: "glob" exported and renamed to "rb_glob".
-
-	* ruby.h: ditto.
-
-	* main.c: turn off command line mingw32's globbing.
-
-Wed May 25 22:25:13 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/extmk.rb.in: use "ftools" instead of "rm -f".
-
-	* lib/mkmf.rb: ditto.
-
-Thu May 25 22:01:32 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* defines.h: mswin32: remove obsolete USHORT definition.
-
-	* re.h: mswin32: use EXTERN instead of extern.
-
-	* regex.h: mswin32: export re_mbctab properly.
-
-	* win32/ruby.def: add ruby_ignorecase and regex.c's exports.
-
-Thu May 25 21:28:44 2000  Minero Aoki <aamine@dp.u-netsurf.ne.jp>
-
-	* re.c (rb_reg_expr_str): escape un-printable character.
-
-Thu May 25 01:35:15 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (tokadd_escape): forgot to add `\x' to hexadecimal
-	  escape sequences.
-
-	* object.c (rb_obj_dup): dup for normal object (T_OBJECT) copies
-	  instance variables only.
-
-Wed May 24 23:49:47 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (rb_mod_initialize): should provide initialize.
-
-Wed May 24 23:17:50 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/Makefile: remove unnecessary mv and rm command call.
-
-Wed May 24 21:01:04 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/pty/pty.c: use "" instead of <> to include ruby.h and rubyio.h
-	  for BeOS (PowerPC).
-
-	* file.c (rb_find_file): should check dln_find_file() result.
-
-	* win32/ruby.def: add rb_block_given_p.
-
-Wed May 24 16:32:45 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_popen): popen does not take 3rd argument anymore.
-
-	* re.c (rb_reg_desc): re may be zero, check before dereferencing.
-
-Wed May 24 16:03:06 2000  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/cgi.rb: bug fix: CGI::escape(), CGI::Cookie::new()
-
-	* lib/net/telnet.rb: improve: binmode(), telnetmode() interface
-
-Wed May 24 13:12:31 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* misc/ruby-mode.el (ruby-parse-region): support `while .. do'
-	  etc. But corresponding keywords must be at the beginning of
-	  line.
-
-Tue May 23 23:50:12 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_initialize_m): wrong kcode value.
-
-	* re.c (rb_reg_s_new): forgot to initialize re->ptr.
-
-Tue May 23 08:36:24 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): forgot to restore old option
-	  status by (?ix-ix).
-
-	* regex.c (re_compile_fastmap): anychar may match newline if
-	  RE_OPTION_MULTILINE or RE_OPTION_POSIXLINE is set.
-
-Mon May 22 22:45:06 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.19.
-
-	* lib/net/http.rb: do not use Regexp "p" option.
-
-Mon May 22 21:56:43 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* struct.c (rb_struct_getmember): should use ID2SYM, not INT2NUM.
-
-Mon May 22 15:07:37 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (rb_find_file): should check if the file really exists.
-
-Mon May 22 09:08:12 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_popen): _exit(0) after processing block under the
-	  child process.
-
-	* io.c (rb_io_popen): flush stdout/stderr before subprocess
-	  termination.
-
-	* eval.c (rb_check_safe_str): insert rb_secure(4); operation
-	  requires untainted string should be prohibited in level 4.
-
-Sun May 21 21:17:00 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: add Setup.dj for djgpp cross-compiling.
-
-	* Setup.dj: add readline.
-
-	* instruby.rb: copy win32/win32.h to archlibdir on mingw32.
-
-Sun May 21 20:58:08 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* pack.c: fix OFF16 and OFF32 definitions for Alpha and IRIX64.
-
-Sun May 21 17:31:37 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* instruby.rb: support "make install" for cross-compiling.
-
-	* ext/extmk.rb.in: ditto.
-
-Sun May 21 14:22:49 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* Makefile.in: rename prep.rb to fake.rb.
-
-	* configure.in: ditto.
-
-Sat May 20 23:29:14 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dir.c (dir_s_new): does not take block; "open" does.
-
-	* io.c (rb_io_s_new): ditto.
-
-Fri May 19 07:44:26 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dir.c (dir_s_open): Dir#open does not returns closed Dir if a
-	  block is given to the method.
-
-	* re.c (rb_reg_initialize_m): Regexp::new calls initialize now.
-
-	* string.c (Init_String): String#delete_at removed.
-
-	* string.c (rb_str_aset_m): should have checked argc != 2.
-
-	* eval.c (rb_thread_schedule): select(2) was called too many.
-
-	* regex.c (re_compile_pattern): a bug in (?m) support.  Pointed
-	  out by Dave Thomas <Dave@thomases.com>.
-
-Thu May 18 23:55:26 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* dln.c (search_undef): st_lookup()'s 3rd parameter should be
-	  a pointer of the variable which has the same size and alignment
-	  as `char *'.
-
-	* marshal.c (w_symbol, w_object): ditto.
-
-	* parse.y (rb_intern): ditto.
-
-Thu May 18 18:00:35 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.18.
-
-	* lib/net/protocol.rb: Net::Version was removed.
-
-	* lib/net/smtp.rb: use Socket.gethostname to get local host name.
-
-Thu May 18 13:34:57 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (ruby_connect): should not have replaced
-	  thread_write_select() by rb_thread_fd_writable().
-
-Thu May 18 09:01:25 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* configure.in, ext/extmk.rb.in, lib/mkmf.rb: remove BeOS R3 support.
-	  Make a shared library (libruby.so) only if the --enable-shared
-	  option is specified.
-
-	* instruby.rb: no longer use libruby.so.LIB and import.h.
-
-	* io.c: fix READ_DATA_PENDING definition for BeOS (PowerPC).
-
-Wed May 17 14:14:23 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_new_1): use /m instead of /p.
-
-Wed May 17 02:22:03 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_polling): wait 0.06 second to let other
-	  processes run.
-
-	* process.c (rb_waitpid): avoid busy wait using rb_thread_polling.
-
-	* file.c (rb_thread_flock): ditto.
-
-	* parse.y (expr): avoid calling value_expr() twice.
-
-Wed May 17 00:45:57 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* io.c (rb_io_binmode): should check PLATFORMs, not O_BINARY, sigh...
-
-Wed May 17 00:40:15 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/config.h: add DLEXT2, now DLEXT on mswin32 is "so".
-
-	* win32/config.status: ditto.
-
-	* win32/ruby.def: add symbol "rb_big_divmod".
-
-Tue May 16 19:45:32 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* intern.h: use EXTERN instead of extern.
-
-	* win32/ruby.def: add rb_defout, rb_stdout, ruby_errinfo,
-	  ruby_sourceline, ruby_sourcefile to work with eruby
-	  reported by Hiroshi Saito <HiroshiSaito@pob.org>.
-	  Export both ruby_xmalloc and xmalloc etc.
-
-Tue May 16 17:00:05 2000  Masaki Fukushima  <fukusima@goto.info.waseda.ac.jp>
-
-	* eval.c (rb_thread_select): should check whether fds are null.
-
-Tue May 16 11:51:31 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (pipe_open): synchronize subprocess stdout/stderr.
-
-Mon May 15 15:38:09 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.h: exported symbols should be for xmalloc etc. are now
-	  prefixed by 'ruby_', e.g. ruby_xmalloc().
-
-	* eval.c (rb_thread_select): remove busy wait for select.
-
-	* dir.c (glob): trailing path may be null, e.g. glob("**").
-
-Mon May 15 14:48:41 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* io.c (rb_io_pid): new method; returns nil if no process attached
-	  to the IO.
-
-Mon May 15 01:18:20 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_s_popen): _exit after Proc execution.
-
-Sun May 14 18:05:59 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* Makefile.in: missing/nt.c -> win32/win32.c
-
-	* configure.in: bug fix; static linking on mingw32.
-
-	* cygwin/GNUmakefile.in: remove VPATH.
-
-	* ext/extmk.rb.in: Makefile set binmode with mingw32 on cygwin32.
-
-	* lib/mkmf.rb: ditto.
-
-	* win32/config.h: undef HAVE_SYS_FILE_H.
-
-Sun May 14 02:02:48 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* lib/irb/ruby-lex.rb: '/' should be escaped in character class.
-
-Sun May 14 00:54:43 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in, ...: support mingw32.
-
-	* defines.h: ditto. undef EXTERN for tcl/tk on cygwin.
-
-	* ext/*/extconf.rb: replace PLATFORM with RUBY_PLATFORM.
-
-	* ext/socket/sockport.h: define IN_MULTICAST for missing IN_MULTICAST.
-
-	* ext/tcltklib/tcltklib.c: remove declaration of rb_argv0.
-
-	* file.c: should check S_IXGRP, S_ISGID, not NT.
-
-	* io.c (rb_io_binmode): should check _IOBIN, O_BINARY, not PLATFORMs.
-
-Sat May 13 14:21:15 2000  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* io.c (rb_io_s_popen): should check whether a block is given.
-
-Fri May 12 17:33:44 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): charset_not should not exclude
-	  newline from matching set.
-
-Thu May 11 22:51:05 2000  Ryunosuke Ohshima  <ryu@jaist.ac.jp>
-
-	* pack.c (pack_pack): Bignum support.
-
-	* pack.c (pack_unpack): ditto.
-
-Thu May 11 21:19:29 2000  Hiroshi Igarashi  <iga@ruby-lang.org>
-
-	* intern.h: add missing declarations of ruby API functions.
-
-	* ruby.h: fix function name in declarations.
-
-Thu May 11 22:29:25 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/md5/depend: add $(topdir)/config.h dependency to md5c.o.
-
-	* ext/md5/extconf.rb: new file to add -DHAVE_CONFIG_H flag for Alpha.
-
-Thu May 11 10:55:52 2000  Ryunosuke Ohshima  <ryu@jaist.ac.jp>
-
-	* pack.c (pack_pack): packing BER compressed integer by `w'.
-
-	* pack.c (pack_unpack): unpacking BER.
-
-Thu May 11 00:37:55 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (parse_regx): remove in_brack.
-
-Wed May 10 12:51:18 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (proc_options): move adding RUBYLIB and "." to the load
-	  path after #! line parsing.
-
-	* parse.y (parse_regx): should parse backslash escape like `\c['
-	  here to avoid causing `unterminated regexp' error.
-
-Wed May 10 00:19:53 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* MANIFEST, beos/GNUmakefile.in, configure.in: no longer need
-	  beos/GNUmakefile.in to support BeOS R4.5.2 (Intel) as a result
-	  of eban's Makefile.in change.
-
-	* io.c: NOFILE is already defined on BeOS R4.5 (Intel) or later.
-
-	* lib/matrix.rb: remove debug print.
-
-	* regex.c: don't use nested comment.
-
-Tue May  9 17:08:43 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (massign): no longer convert nil into empty array.
-
-	* io.c (rb_io_s_popen): optional 3rd argument to give proc, which
-	  will be executed in spawned child process.
-
-Mon May  8 23:47:39 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* eval.c (rb_callcc): prev & next should be initialized to zero.
-
-Mon May  8 23:17:36 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dln.c (dln_init): remove possible buffer overrun.  This is
-	  suggested by Aleksi Niemela <aleksi.niemela@cinnober.com>.
-
-	* dln.c (init_funcname): ditto.
-
-Sat May  6 23:35:47 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (lhs): should allow `obj.Attr = 5' type expression.
-
-Sat May  6 15:46:08 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/socket/extconf.rb: add a new configure option to force use
-	  of the WIDE Project's getaddrinfo(): --enbale-wide-getaddrinfo.
-
-Fri May  5 21:19:22 2000  MOROHOSHI Akihiko  <moro@remus.dti.ne.jp>
-
-	* parse.y (yylex): allow '$1foo' and such.
-
-Fri May  5 17:57:24 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.17.
-
-	* lib/net/http.rb: write also port number in Host: field.
-
-	* lib/net/http.rb: see Proxy-Connection: to decide socket connection.
-
-Fri May  5 03:25:15 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_fastmap): charset_not for multibyte
-	  characters excluded too many characters.
-
-Tue May  2 13:23:43 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_schedule): little bit more impartial context
-	  switching.
-
-Tue May  2 09:50:03 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* configure.in: add DLDLIBS to set platform specific library
-	  for extensions.
-
-	* ext/extmk.rb.in: use @DLDLIBS@ instead of RUBY_PLATFORM choice.
-
-	* lib/mkmf.rb: use CONFIG["DLDLIBS"] instead of RUBY_PLATFORM choice.
-
-	* config_s.dj: add @DLDLIBS@.
-
-	* win32/config.status: ditto.
-
-	* win32/ruby.def: regular maintenance.
-
-Mon May  1 23:42:44 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in, eval.c: add DLEXT2. now DLEXT on Cygwin is "so".
-
-	* defines.h: use dllimport, dllexport for Cygwin 1.1.x.
-
-	* ruby.h: ditto.
-
-	* cygwin/GNUmakefile.in: ditto.
-
-	* ext/Win32API/Win32API.c: directly "call" in asm statement for
-	  gcc 2.95.x or newer.
-
-Sat Apr 29 04:58:12 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* array.c (rb_ary_unshift_m): performance improvement.
-
-Fri Apr 28 00:19:22 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* array.c (rb_ary_unshift_m): takes items to push.
-
-Wed Apr 26 15:23:02 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_succ): insert carrying character just before
-	  the leftmost alpha numeric character.
-
-	* string.c (rb_str_succ): proper behavior for "".succ and "\377".succ.
-
-	* string.c (rb_str_succ): use realloc and memmove.
-
-Tue Apr 25 18:28:45 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.16.
-
-	* lib/net/smtp.rb: add SMTP AUTH
-
-Tue Apr 25 14:30:13 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_gets_internal): shortcut when rs == rb_default_rs.
-
-Sat Apr 22 23:14:41 2000  SHIROYAMA Takayuki  <psi@fortune.nest.or.jp>
-
-	* configure.in: MacOS X support.
-
-Sat Apr 22 16:37:10 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.15.
-
-	* lib/net/http.rb:  closing socket by watching both
-	  user header and server response
-
-Fri Apr 21 21:44:34 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* io.c (rb_io_s_pipe): should set FMODE_SYNC.
-
-Thu Apr 20 16:59:22 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (massign): `*lvalue = false' should assign `[false]' to
-	  lvalue.
-
-Wed Apr 19 08:35:08 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (rb_singleton_class): generate singleton class for
-	  special constants: nil, true, false.
-
-Wed Apr 19 02:09:30 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (rb_singleton_class): singleton method for nil, true,
-	  false is possible now.
-
-	* eval.c (rb_eval): ditto.
-
-Tue Apr 18 18:54:25 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.14.
-
-	* lib/net/http.rb: new method HTTP#head2.
-
-	* lib/net/http.rb: get2/post2 does not raise exceptions.
-
-Mon Apr 17 15:16:31 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_close): to detect some exceptional status, writable
-	  IO should be flushed before close;
-
-Sat Apr 15 18:29:00 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_collect_bang): Array#filter renamed.
-
-Fri Apr 14 19:47:11 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.13.
-
-	* lib/net/pop.rb: accept illegal timestamp
-
-	* lib/net/http.rb: when body was chunked, does not set Content-Length:
-
-Tue Apr 11 21:14:42 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* config_s.dj: add @sitedir@.
-	* configure.in: add --with-sitedir=DIR option.
-	* instruby.rb: use CONFIG["sitedir"].
-	* lib/mkmf.rb: support 'make site-install'.
-	* win32/config.status: add @sitedir@.
-
-Tue Apr 11 16:25:15 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (rb_big_2comp): unnecessary lvalue cast removed.
-
-Tue Apr 11 02:25:53 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (env_fetch): new method.
-
-	* marshal.c (marshal_dump): accepts depth = nil for unlimited depth.
-
-Sun Apr  9 20:49:19 2000  Dave Thomas  <Dave@Thomases.com>
-
-	* parse.y (str_extend): Allow class variables to be expanded.
-
-Fri Apr  7 02:03:54 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* error.c (rb_sys_fail): escape non-printable characters.
-
-Thu Apr  6 20:10:47 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/extmk.rb.in (create_makefile): BeOS --program-suffix support.
-	* lib/mkmf.rb (create_makefile): ditto.
-
-Thu Apr  6 09:55:26 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* error.c (rb_sys_fail): need rb_exc_new2() call on BeOS.
-
-Mon Apr  3 17:22:27 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_reopen): support tempfile.
-
-	* eval.c (catch_i): should supply argument.
-
-Sat Apr  1 22:50:28 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (r_object): wrong symbol restoration.
-
-Sat Apr  1 21:30:53 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* io.c (rb_io_printf, rb_f_printf): should use rb_io_write.
-
-Sat Apr  1 00:16:05 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): should be clear flags
-	  before calling finalizers.
-
-	* eval.c (specific_eval): can be called without SecurityError, if
-	  $SAFE >= 4.
-
-	* object.c (sym_inspect): inspect gives ":sym", to_s gives "sym".
-
-Fri Mar 31 22:07:04 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.12.
-
-	* lib/net/protocol.rb:  update Net::Protocol::Proxy#connect
-
-	* lib/net/protocol.rb:  ReplyCode is not a class
-
-	* lib/net/http.rb: header value format was change:
-	  values do not include header name
-
-	* lib/net/http.rb: header is not a Hash, but HTTPResponse
-
-Thu Mar 30 12:19:44 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* enum.c (enum_find): rb_eval_cmd() should be called with array.
-
-Tue Mar 28 13:57:05 2000  Clemens Hintze  <c.hintze@gmx.net>
-
-	* ext/dbm/dbm.c (fdbm_invert): should return new hash.
-
-	* ext/gdbm/gdbm.c (fgdbm_invert): ditto.
-
-Tue Mar 28 00:58:03 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.11.
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: does not
-	  dispatch any commands while dispatching command.
-
-	* lib/net/protocol.rb: failed to get error class of
-	  inherited ReplyCode
-
-	* lib/net/http.rb: change feature of "get2", "post2"
-
-Mon Mar 27 01:34:58 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.10.
-
-	* lib/net/http.rb: return value of 'head' was wrong.
-
-Sun Mar 26 17:47:35 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.9.
-
-	* lib/net/smtp.rb: SMTP#do_ready wrongly took no arguments
-
-Sat Mar 25 23:21:10 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (w_object): symbols should be converted to ID before
-	  dumping out.
-
-Fri Mar 24 18:26:51 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (test_check): should have checked exact number of arguments.
-
-Fri Mar 24 21:02:11 2000  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* signal.c (trap): should treat some symbols as the signal.
-
-Fri Mar 24 06:58:03 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.8.
-
-	* lib/net/http.rb:  post, get2, post2, get_body
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: separate
-	  Command/Socket documentation.
-
-Thu Mar 23 02:26:14 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_fptr_finalize): fptr may be null.
-
-	* io.c (rb_io_s_new): now calls `initialize'.
-
-	* io.c (rb_io_initialize): actual open done in this method.
-
-	* io.c (rb_file_initialize): ditto.
-
-	* eval.c (rb_eval): class variables in singleton class definition
-	  is now handled properly (I hope).
-
-Wed Mar 22 21:49:36 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* st.c (st_delete_safe): skip already deleted entry.
-
-	* hash.c (rb_hash_delete): modify brace miss.
-
-Wed Mar 22 08:53:58 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (exec_under): do not push cbase if ruby_cbase == under.
-
-	* node.h (NEW_CREF0): preserve cbase nesting.
-
-Tue Mar 21 12:57:50 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (rb_class_s_new): Class::new should call `inherited'.
-
-Sat Mar 18 12:36:09 2000  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* eval.c (rb_backtrace, make_backtrace): removed unused variable
-	  `lev'.
-
-	* eval.c (rb_attr): calls `method_added' at attribute definition.
-
-	* eval.c (rb_mod_modfunc): calls `singleton_method_added' while
-	  `module_function'.
-
-	* eval.c (rb_eval): parameter to `method_added' and
-	  `singleton_method_added' is Symbol.
-
-	* eval.c (Init_eval): caches IDs for `method_added' and
-	  `singleton_method_added'.
-
-Sat Mar 18 11:25:10 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (rescue): allows `rescue Error in foo'.  experimental.
-	  which is better this or preparing alias `exception' for `$!'?
-
-Fri Mar 17 15:02:45 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_autoload_id): defining new autoload should be
-	  prohibited for $SAFE > 4.
-
-	* variable.c (rb_autoload_load): autoload should be possible for
-	  $SAFE > 4.
-
-	* eval.c (call_trace_func): should handle T_ICLASS properly.
-
-Fri Mar 17 14:34:30 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_gsub): forgot to initialize str->orig.
-
-Fri Mar 17 01:24:59 2000  Dave Thomas  <Dave@thomases.com>
-
-	* string.c (rb_str_clone): forgot to copy str->orig if STR_NO_ORIG
-	  is set by Array#pack.
-
-Wed Mar 15 21:25:04 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* array.c (rb_ary_join): 'result' is always duplicated
-	  before concat string.
-
-Wed Mar 15 17:26:05 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (rb_hash_s_create): unexpected recursive call removed.
-	  this bug was found by Satoshi Nojo <nojo@t-samukawa.or.jp>.
-
-Wed Mar 15 13:12:39 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (Init_Thread): Thread.join removed finally.
-
-	* string.c (rb_str_chomp_bang): forgot to call rb_str_modify().
-
-Mon Mar 13 16:12:13 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (block_pass): distinguish real orphan block and still
-	  on-stack block passed by block argument.
-
-Mon Mar 13 00:20:25 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (f_norm_arg): proper error message when constant comes
-	  in formal argument list.  this message is suggested by Muvaw
-	  Pnazte <bugathlon@yahoo.com>.
-
-	* eval.c (rb_f_raise): proper error message when the first
-	  argument is not an exception class/object.
-
-	* string.c (rb_str_dup): dup now postpone buffer copy as long as
-	  possible.  performance improved by lazy copying.
-
-Sun Mar 12 13:58:52 2000  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* signal.c (rb_f_kill): should treat some symbols as the signal.
-
-Sat Mar 11 22:03:03 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_gsub): performance tune by avoiding buffer copy.
-
-	* eval.c (rb_f_missing): check if argv[0] is ID.
-
-Sat Mar 11 15:49:41 2000  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* struct.c (rb_struct_aref): struct aref by symbol.
-
-Sat Mar 11 05:07:11 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* process.c (proc_setpriority): should return 0, not nil.
-
-	* process.c (proc_setpgid): ditto.
-
-Fri Mar 10 18:14:54 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (path_check_1): confusing buf and path.  this bug found
-	  by <decoux@moulon.inra.fr>.
-
-Fri Mar 10 09:37:49 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* MANIFEST: add beos/GNUmakefile.in.
-	* configure.in: support BeOS R4.5.2 (Intel).
-	* beos/GNUmakefile.in: new file to support BeOS R4.5.2 (Intel).
-
-Thu Mar  9 11:13:32 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_fastmap): fixed embarrassing brace bug.
-
-Thu Mar  9 01:36:32 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* missing/flock.c: emulate missing flock() with fcntl().
-
-Thu Mar  9 00:29:35 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (sym_to_s): returns ":sym".
-
-	* object.c (sym_id2name): separated from to_s; returns "sym".
-
-Wed Mar  8 19:16:19 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.7.
-
-	* lib/net/http.rb (connecting): returns header
-
-Wed Mar  8 02:08:43 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y: escape expansion too early.
-
-	* string.c (rb_f_scan): Kernel#scan added.
-
-	* regex.c (re_compile_pattern): support \cX et al.
-
-Tue Mar  7 01:44:27 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (set_stdin): simplified procedure, allows $stdin = DATA;
-	  experimental.
-
-	* io.c (set_outfile): ditto.
-
-	* re.c (Init_Regexp): new method Regexp#last_match added; it's an
-	  alternative for $~.
-
-	* configure.in (DEFAULT_KCODE): KCODE_NONE should be the default.
-
-	* dir.c (dir_s_rmdir): should return 0 on success.
-
-	* signal.c: remove CWGUSI support.
-
-Mon Mar  6 12:28:37 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (w_symbol): support symbol object.
-
-	* util.c: make symbol as separated class.
-
-	* error.c (Init_Exception): new exception RangeError.
-
-	* ext/socket/socket.c (ip_addrsetup): should check length of hostname.
-
-	* ext/socket/socket.c (ip_addrsetup): check newline at the end of
-	  hostname.  These fixes suggested by Muvaw Pnazte <bugathlon@yahoo.com>.
-
-Sun Mar  5 20:35:45 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): should call
-	  LoadLibrary() everytime and should assign the hdll to Win32API
-	  object(protect the hdll from GC).
-
-Sun Mar  5 18:49:06 2000  Nakada.Nobuyoshi  <nobu.nokada@softhome.net>
-
-	* misc/ruby-mode.el (ruby-parse-region): not treat method `begin'
-	  and `end' as reserved words.
-
-	* misc/ruby-mode.el (ruby-font-lock-docs): ignore after `=begin'
-	  and `=end'.
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords, hilit-set-mode-patterns):
-	  added `yield' to keywords.
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords, hilit-set-mode-patterns):
-	  matches keywords at end of buffer.
-
-Sun Mar  5 18:08:53 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.6.
-
-	* lib/net/http.rb:  allow to omit 'start'
-
-Tue Feb 29 01:08:26 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* range.c (range_initialize): initialization done in `initialize';
-	  `initialize' should not be called more than once.
-
-	* object.c (Init_Object): default `initialize' should take zero
-	  argument.
-
-	* time.c (time_s_new): call `initialize' in Time::new.
-
-Sat Feb 26 22:39:31 2000  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* string.c (rb_str_times): fix String#* with huge string.
-
-Sat Feb 26 00:14:59 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dir.c (dir_s_new): call `initialize' in Dir::new.
-
-Fri Feb 25 23:01:49 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ruby.h: export ruby_safe_level by EXTERN for mswin32.
-	* win32/ruby.def: regular maintenance.
-
-Fri Feb 25 22:12:46 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_reopen): IO#reopen should accept path as well.
-
-	* string.c (rb_str_s_new): call `initialize' in String::new.
-
-	* hash.c (rb_hash_s_new): call `initialize' in Hash::new.
-
-	* array.c (rb_ary_s_new): call `initialize' in Array::new.
-
-Fri Feb 25 12:50:20 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_start_timer): interval changed to 10ms from 50ms.
-
-Fri Feb 25 06:42:26 2000  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/socket/socket.c (ip_addrsetup): hostp should remain NULL if
-	  host is nil.
-
-Thu Feb 24 16:53:47 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_schedule): priority check for sleep expired
-	  threads needed.
-
-Wed Feb 23 14:22:32 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_join): forgot to initialize a local variable
-	  `taint'.
-
-Tue Feb 22 07:40:55 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (Init_Regexp): renamed to MatchData, old name MatchingData
-	  remain as alias.
-
-Tue Feb 22 00:20:21 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/protocol.rb, smtp.rb, pop.rb, http.rb: 1.1.5.
-
-	* lib/net/session.rb: rename to protocol.rb
-
-	* lib/net/protocol.rb: ProtocolSocket -> Net::Socket
-
-	* lib/net/protocol.rb: Net::Socket#write, write_pendstr
-	  can take block
-
-	* lib/net/smtp.rb: new methods SMTP#ready SMTPCommand#write_mail
-
-	* lib/net/pop.rb: POPMail#pop can take block
-
-Sat Feb 19 23:58:51 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): pop_loop should not pop at forward jump.
-
-Fri Feb 18 17:15:40 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (method_clone): method objects are now clonable.
-
-Fri Feb 18 00:27:34 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_shared_variable_declare): shared variable (aka
-	  class/module variable) introduced.  prefix `@@'. experimental.
-
-	* class.c (rb_scan_args): new format char '&'.
-
-Thu Feb 17 19:09:05 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/win32.c (mypopen): don't close handle if it is not assigned.
-	* win32/win32.c (my_open_osfhandle): support O_NOINHERIT flag.
-	* win32/win32.c (win32_getcwd): rename getcwd to win32_getcwd
-	  in order to avoid using the C/C++ runtime DLL's getcwd.
-	  Use CharNext() to process directory name.
-	* win32/win32.h: map getcwd to win32_getcwd.
-
-Wed Feb 16 00:32:49 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (method_arity): nd_rest is -1 for no rest argument.
-
-	* process.c (proc_waitpid): returns nil when waitpid(2) returns 0.
-
-Tue Feb 15 01:47:00 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* process.c (rb_f_waitpid): pid_t should be signed.
-
-Mon Feb 14 13:59:01 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): yylex yields wrong tokens for `:foo=~expr'.
-
-	* ruby.c (load_file): exit if reading file is empty.
-
-Mon Feb 14 03:34:52 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): `foo.bar=1' should be <foo><.><bar><=><1>,
-	  not <foo><.><bar=><1>.
-
-	* eval.c (rb_thread_restore_context): process according to
-	  RESTORE_* is moved after longjmp().
-
-	* eval.c (thread_switch): new function to process RESTORE_*.
-
-Sun Feb 13 16:19:49 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ruby.c (require_libraries): don't access freed memory.
-
-	* ruby.c (add_modules): ditto.
-
-Fri Feb 11 12:06:22 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (parse_quotedwords): %w() need to split not only by mere
-	  spaces, but by all whitespaces.
-
-Thu Feb 10 02:12:04 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_index_m): did not support negative offset.
-
-Wed Feb  9 21:54:26 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/getaddrinfo.c: gcc --traditional support.
-	  Rearrange headers to work AC_C_CONST.
-	* ext/socket/getnameinfo.c: ditto.
-	* ext/socket/socket.c: mswin32: use double instead of long long.
-
-Wed Feb  9 16:30:41 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (num_coerce): should return [y, x].
-
-Wed Feb  9 11:07:30 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (ruby_prog_init): loadpath structure changed.
-
-Tue Feb  8 02:07:33 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): optimize for \G at top.
-
-	* regex.c (re_compile_pattern): \G introduced.
-
-	* regex.c (re_match): ditto.
-
-	* string.c (str_sub_bang): old behavior restored: bang method
-	  returns nil if string not changed.
-
-	* regex.c (re_compile_pattern): support independent subexpression
-	  `(?>pattern)'.
-
-	* regex.c (re_match): ditto.
-
-Mon Feb  7 15:51:08 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): now understands interrupts under Ruby.
-
-Mon Feb  7 07:51:52 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_uniq_bang): always return an Array.
-
-	* array.c (rb_ary_compact_bang): ditto.
-
-	* array.c (rb_ary_flatten_bang): ditto.
-
-	* hash.c (rb_hash_reject): returns a Hash, not an Array.
-
-	* hash.c (env_reject): ditto.
-
-Fri Feb  4 10:20:25 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (scan_once): scan now leaves information about the last
-	  successful pattern match in $&.
-
-	* io.c (rb_io_close): should not check closed IO.
-
-Fri Feb  4 05:44:01 2000  Kentaro Inagaki  <inagaki@tg.rim.or.jp>
-
-	* ext/socket/socket.c (s_recv): TRAP_BEG after retry entry.
-
-Wed Feb  2 22:33:45 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (rb_thread_start): receives argument from outside, like
-	  `Thread::start(1,2,3){|a,b,c| ... }'.
-
-Wed Feb  2 22:14:40 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_regsub): should check regs->num_regs.
-
-	* re.c (rb_reg_search): remove matchcache, use static struct
-	  re_register instead.
-
-	* re.c (match_getter): avoid cloning match data.
-
-Wed Feb  2 17:12:15 2000  Dave Thomas  <Dave@Thomases.com>
-
-	* samples/eval.rb: Rescue new ScriptError exception
-
-Wed Feb  2 02:06:07 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_gsub_bang): gsub! now leaves information about the
-	  last successful pattern match in $&.
-
-Mon Jan 31 15:24:58 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_sub_bang): bang method returns string always.
-	  experimental.
-
-Sun Jan 30 17:58:09 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* eval.c: arrange to use setitimer(2) for BOW, DJGPP
-
-	* defines.h: ditto. use random(3) on cygwin b20.1.
-
-Sun Jan 30 17:20:16 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* eval.c: use getrlimit(2) on DJGPP.
-
-Thu Jan 27 01:27:10 2000  GOTO Kentaro  <gotoken@math.sci.hokudai.ac.jp>
-
-	* dir.c (glob): glob pattern "/*" did not match.
-
-Wed Jan 26 22:30:47 2000  Shigeo Kobayashi  <shigeo@tinyforest.gr.jp>
-
-	* numeric.c (flo_modulo): wrong result for negative modulo.
-
-Wed Jan 26 02:01:57 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (test_c): should use S_ISCHR.
-
-	* file.c (rb_stat_c): ditto.
-
-	* string.c (rb_str_each_line): should propagate tainting.
-
-Tue Jan 25 04:01:34 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (rb_obj_freeze): all objects made freezable.
-
-Tue Jan 25 00:37:01 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: use AC_CHECK_TOOL for cross compiling.
-
-Mon Jan 24 19:01:54 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* array.c (rb_protect_inspect): should be checked by id of
-	  objects; not by object themselves.
-
-Mon Jan 24 18:48:08 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* eval.c (rb_eval): too many warnings;  warned on every method
-	  overriding.  should be on method discarding.
-
-Mon Jan 24 02:56:44 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): -2.abs should be `(-2).abs' to accomplish the
-	  principle of less surprise.  `+2' too.
-
-	* eval.c (rb_eval): when defining class is already there, and
-	  superclass differ, throw away the old class.
-
-	* variable.c (rb_const_set): gives warning again on constant
-	  redefinition.
-
-	* error.c (Init_Exception): SyntaxError, NameError, LoadError and
-	  NotImplementError are subclasses of ScriptError<Exception, not
-	  StandardError.  experimental.
-
-Sat Jan 22 00:00:41 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (parse_quotedwords): no longer use `String#split'.
-	  and enable space escape within quoted word list.
-	  e.g. %w(a\ b\ c abc) => ["a b c", "abc"].
-
-	* string.c (rb_str_slice_bang): new method `slice!'.
-
-Fri Jan 21 21:56:08 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb, http.rb: 1.1.4.
-
-	* lib/net/http.rb: can receive messages which have
-	  no Content-Length:.
-
-Fri Jan 21 16:15:59 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thgroup_s_new): new class ThreadGroup.
-
-Tue Jan 18 12:24:28 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* struct.c (Init_Struct): remove Struct's own hash and eql?.
-
-Sat Jan 15 22:21:08 2000  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* eval.c (search_method): argument klass may be 0.
-
-Sat Jan 15 15:03:46 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* enum.c (enum_index): remove this method.
-
-	* enum.c: remove use of pointers to local variables. find,
-	  find_all, min, max, index, member?, each_with_index,
-
-	* eval.c (massign): multiple assignment does not use to_a anymore.
-	  experimental.
-
-Fri Jan 14 12:22:04 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_replace): use memmove instead of memcpy for
-	  overwrapping strings (e.g. a[1] = a).
-
-Thu Jan 13 11:12:40 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (arg_add): use new node, ARGSPUSH.
-
-Mon Jan 10 18:32:28 2000  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* marshal.c (w_object): forgot an argument to call w_ivar().
-
-Sun Jan  9 18:13:51 2000  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* random.c: first was not defined unless HAVE_RANDOM.
-
-Sat Jan  8 19:02:49 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_sysread): raise IOError for buffered IO.
-
-	* ext/socket/socket.c (s_recv): ditto.
-
-Fri Jan  7 00:59:29 2000  Masahiro Tomita  <tommy@tmtm.org>
-
-	* io.c (io_fread): TRAP_BEG/TRAP_END added around getc().
-
-Thu Jan  6 00:39:54 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* random.c (rb_f_rand): should be initialized unless srand is
-	  called before.
-
-Wed Jan  5 16:59:34 2000  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb, http.rb: 1.1.3.
-
-	* lib/net/session.rb: Session -> Protocol, ...
-
-	* lib/net/http.rb: HTTPCommand implementation was changed.
-
-Wed Jan  5 02:14:46 2000  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* parse.y: Fix SEGV on empty parens with UMINUS or UPLUS.
-
-Tue Jan  4 22:25:54 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (stmt): `() while cond' dumped core.
-
-Tue Jan  4 06:04:14 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* configure.in: modify for cross-compiling.
-	  use target_* instead of host_*.
-	  use AC_CANONICAL_TARGET.
-
-	* Makefile.in: ditto.
-
-	* cygwin/GNUmakefile.in: ditto.
-
-Sat Jan  1 13:26:14 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_yield_0): force_recycle ruby_dyna_vars to gain
-	  performance.
-
-	* array.c (rb_ary_delete_at_m): takes same argument pattern with
-	  rb_ary_aref.
-
-Sat Jan  1 10:12:26 2000  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ruby.h,util.c (rb_special_const_p): peep hole optimization.
-
-	* ruby.h,util.c (rb_test_false_or_nil): removed.
-
-	* ruby.h (RTEST, SPECIAL_CONST_P): peep hole optimization.
-
-	* ruby.h (FL_ABLE, FL_SET, FL_UNSET, FL_REVERSE): made expressions
-	  not statements.
-
-	* ruby.h (OBJ_INFECT): newly added macro which copies taint from
-	  `s' to `x'.
-
-Sat Jan  1 02:04:18 2000  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_safe_level): new method.
-
-	* eval.c (rb_yield_0): recycle dyna_var_map to reduce object
-	  allocation.
-
-Fri Dec 31 00:52:48 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c: thread independent trace_func not needed.
-
-Thu Dec 30 14:47:31 1999  akira yamada  <akira@ruby-lang.org>
-
-	* configure.in: specifies -soname in LIBRUBY_DLDFLAGS on linux
-	  platforms.
-
-Thu Dec 30 10:51:27 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c,io.c,hash,c,re.c,string.c: `_m' suffix instead of
-	  `_method' for wrapper functions to implement method,
-	  e.g. `rb_str_join_m()'.
-
-Thu Dec 30 02:08:02 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (rb_cstr2inum): non-numeric format check added.
-	  currently it works only with base == 0 (i.e. Integer()).
-
-	* bignum.c (rb_str2inum): now takes VALUE to 1st argument.  null
-	  byte check added.
-
-	* array.c (rb_ary_replace): unless replacement is an array,
-	  replacement shall be converted to array by `[replacement]', not
-	  by `replacement.to_a'.
-
-	* array.c (rb_ary_plus): right operand must be an array.
-
-	* array.c (rb_ary_concat): argument must be an array.
-
-Mon Dec 27 12:35:47 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/socket.c (sock_finalize): mswin32: fix socket handle leak.
-
-	* win32/win32.c (myfdclose): ditto.
-
-Sun Dec 26 23:15:13 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/win32.c (mypopen): raise catchable error instead of rb_fatal.
-	* win32/win32.c (mypclose): fix process handle leak.
-
-Sun Dec 26 16:17:11 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/Win32API/Win32API.c (Win32API_initialize): use UINT2NUM
-	  instead of INT2NUM to set __dll__ and __proc__.
-
-Sat Dec 25 00:08:59 1999  KANEKO Naoshi  <wbs01621@mail.wbs.ne.jp>
-
-	* ext/Win32API/Win32API.c (Win32API_Call): remove 'dword ptr'
-	  from _asm.
-
-Fri Dec 24 10:26:47 1999  Koji Oda  <oda@bsd1.qnes.nec.co.jp>
-
-	* win32/win32.h: use "C++" linkage.
-
-Fri Dec 24 02:00:57 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (THREAD_ALLOC): should initialize th->trace.
-
-Fri Dec 24 00:43:39 1999  KANEKO Naoshi  <wbs01621@mail.wbs.ne.jp>
-
-	* io.c (pipe_open): check for `fptr->f == NULL'.
-	* win32/win32.c (mypopen): STDERR does not work during ` function.
-
-Wed Dec 22 22:50:40 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb, http.rb: 1.1.2.
-
-	* lib/net/http.rb: HTTP support is enhanced a little
-
-	* lib/net/http.rb: support proxy
-
-Tue Dec 21 17:21:28 1999  Koji Oda  <oda@bsd1.qnes.nec.co.jp>
-
-	* ext/socket/socket.c (sock_finalize): mswin32: fix FILE* leak.
-
-Tue Dec 21 05:33:56 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb, http.rb: 1.1.1.
-
-	* lib/net/http.rb: support HTTP chunk
-
-Mon Dec 20 19:08:12 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (rb_file_s_expand_path): handle dir separator correctly.
-
-Sun Dec 19 22:56:31 1999  KANEKO Naoshi  <wbs01621@mail.wbs.ne.jp>
-
-	* lib/find.rb: support dosish root directory.
-	* win32/Makefile: ditto.
-	* win32/config.status: ditto.
-	* win32/win32.c (opendir): ditto.
-	* win32/win32.c (opendir): use CharPrev() to get last character
-	  of the directory name.
-
-Sat Dec 18 03:00:01 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (path_check_1): check should be done by absolute path.
-
-	* marshal.c (r_ivar): should restore generic_ivar too.
-
-	* marshal.c (w_ivar): should dump generic_ivar too.
-
-Fri Dec 17 22:46:46 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb, http.rb: 1.1.0.
-
-	* lib/net/http.rb: test release
-
-	* lib/net/session.rb: support class swapping
-
-	* lib/net/session.rb: Socket#flush_rbuf
-
-	* lib/net/session.rb: doquote -> Net.quote
-
-Fri Dec 17 19:27:43 1999  IWAMURO Motonori  <iwa@mmp.fujitsu.co.jp>
-
-	* eval.c (rb_load): should initialize ruby_frame->last_class.
-
-Wed Dec 15 01:35:29 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (proc_options): option to change directory changed to
-	  `-C' like tar.
-
-	* ruby.c (proc_options): argv boundary check for `-X'.
-
-Mon Dec 13 15:15:31 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_adjust_startpos): separate startpos adjustment
-	  because of major performance drawback.
-
-	* class.c (rb_singleton_class): tainted status of the singleton
-	  class must be synchronized with the object.
-
-	* eval.c (rb_thread_schedule): implement thread priority.
-
-Sat Dec 11 03:34:38 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (mark_hashentry): key should be VALUE, not ID.
-
-	* io.c (argf_eof): should check next_p too.
-
-Thu Dec  9 18:09:13 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* error.c (exc_set_backtrace): forgot to declare a VALUE argument.
-
-Thu Dec  9 14:19:31 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (rb_obj_taint): explicit tainting must be prohibited at
-	  level 4 to prevent polluting trusted object by untrusted code.
-
-	* file.c: file operations (stat, lstat, chmod, chown, umask,
-	  truncate, flock) are prohibited in level 2 (was level 4).
-
-Wed Dec  8 11:48:23 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_f_require): prohibiting require() in the secure mode
-	  cause serious autoloading error.
-
-	* variable.c (rb_obj_instance_variables): don't need to prohibit
-	  to get list of instance variable names of untainted objects.
-
-	* variable.c (rb_ivar_get): don't need to prohibit to get instance
-	  variables of untainted objects.
-
-	* variable.c (rb_mod_remove_const): should prohibit constant
-	  removals too.
-
-Wed Dec  8 09:23:01 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): should try autoloading before defining
-	  class/module at the toplevel.
-
-Tue Dec  7 22:15:30 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* configure.in: Modified rb_cv_rshift_sign detect routine and
-	  more simple/fast RSHIFT() for hpux-10.x.
-
-Tue Dec  7 11:16:30 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (Init_eval): calculate stack limit from rlimit where
-	  getrlimit(2) is available.
-
-Tue Dec  7 09:57:33 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* file.c (rb_file_ftype): should have removed mode_t.
-
-Mon Dec  6 15:55:30 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* numeric.c (fix_rshift): Fix -1 >> 32 returned 0 (should be -1).
-
-	* numeric.c (fix_rshift): Fix  1 >> -1 returned 0 (should be 2).
-
-Mon Dec  6 11:47:23 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c (rb_f_sprintf): formatted string must be tainted if
-	  any of parameters is a tainted string.
-
-	* file.c (rb_file_s_expand_path): expanded file path need not to
-	  be tainted always.
-
-Sun Dec  5 20:25:29 1999  Katsuhiro Ueno  <unnie@blue.sky.or.jp>
-
-	* eval.c (Init_Proc): simple typo.
-
-	* gc.c (add_heap): sizeof(RVALUE*), not sizeof(RVALUE).
-
-Sat Dec  4 01:40:22 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): adjust startpos for multibyte match unless
-	  the first pattern is forced byte match.
-
-	* bignum.c (rb_big_rand): should not use rand/random where drand48
-	  may be available.  RANDOM_NUMBER should be provided from outside.
-
-Fri Dec  3 09:54:59 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (moreswitches): there may be trailing garbage at #!
-	  line.
-
-	* eval.c (rb_f_require): should check require 'feature.o' too.
-
-Thu Dec  2 11:58:15 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* eval.c (rb_thread_loading): should maintain loading_tbl.
-
-Thu Dec  2 10:21:43 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_loading_done): wrong parameter to st_delete().
-
-Wed Dec  1 11:24:06 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ruby.c (process_sflag): process -s properly (should not force `--').
-
-Wed Dec  1 09:47:33 1999  Kazunori NISHI  <kazunori@swlab.csce.kyushu-u.ac.jp>
-
-	* string.c (rb_str_split_method): should increment end too.
-
-Tue Nov 30 18:00:45 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c: MARSHAL_MINOR incremented; format version is 4.2.
-
-	* marshal.c (w_object): distinguish class and module.
-
-	* marshal.c (w_object): save hash's default value.
-
-	* marshal.c (r_object): restore hash's default value.
-
-Tue Nov 30 01:46:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_source): generated source string must be tainted if
-	  regex is tainted.
-
-	* file.c (rb_file_s_basename): basename should not be tainted
-	  unless the original path is tainted.
-
-	* file.c (rb_file_s_dirname): ditto.
-
-Mon Nov 29 20:42:13 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c (stat_new): Struct::Stat -> File::Stat; Stat is no longer
-	  a Struct.
-
-Mon Nov 29 15:28:52 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_path2class): evaluated value from path should be
-	  module or class.
-
-Fri Nov 26 18:12:49 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_exec_end_proc): should remove only end_procs defined
-	  within load wrapper.
-
-	* eval.c (rb_load): save and restore ruby_wrapper around loading.
-
-	* eval.c (rb_mark_end_proc): mark end procs registered by END{} or
-	  at_exit{}.
-
-	* eval.c (rb_set_end_proc): should not call rb_global_variable()
-	  on heap address;  it crashed mod_ruby.
-
-Mon Nov 22 14:07:24 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* ruby.c (proc_options): variable e_script should be visited by
-	  garbage collector.
-
-Sat Nov 20 10:10:41 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (inspect_i): value may be nil, check revised.
-
-Fri Nov 19 18:06:21 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dir.c (glob): recursive wildcard match by `**' ala zsh.
-
-Fri Nov 19 11:44:26 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* variable.c: was returning void value.
-
-Fri Nov 19 03:57:22 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* file.c: add methods Stat struct class to reduce stat(2).
-
-Thu Nov 18 16:18:27 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/pstore.rb: mutual lock by flock(2).
-
-Thu Nov 18 11:44:13 1999  Masahiro Tomita  <tommy@tmtm.org>
-
-	* io.c (read_all): should check bytes too.
-
-Wed Nov 17 02:40:40 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (Init_IO): $defout (alias of $>) added.
-
-Tue Nov 16 09:47:14 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/pstore.rb: add mutual lock using symlink.
-
-Mon Nov 15 16:50:34 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* enum.c (enum_grep): non matching grep returns an empty array, no
-	  longer returns nil.
-
-	* enum.c (enum_grep): grep with block returns collection of
-	  evaluated values of block over matched elements.
-
-Mon Nov 15 04:50:33 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* re.c (rb_reg_source): should not call rb_reg_expr_str()
-	  everytime.
-
-Sat Nov 13 07:34:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_mod_constants): traverse superclasses to collect
-	  constants.
-
-	* eval.c (assign): modified for shared variables.
-
-	* eval.c (rb_eval): search nested scope, then superclasses to
-	  assign shared variables within methods.
-
-	* eval.c (rb_eval): remove warnings from constants modification,
-	  because they are no longer constants.
-
-	* parse.y (node_assign): modified for shared variables.
-
-	* parse.y (assignable): allow constant assignment in methods;
-	  constants should be called `shared variable'.
-
-Fri Nov 12 23:52:19 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* process.c (rb_f_system): argument check for NT, __EMX__, DJGPP.
-
-Wed Nov 10 21:54:11 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* hash.c (rb_any_cmp): Fixed return without value.
-
-Wed Nov 10 17:57:06 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c: incorporate <yasuf@big.or.jp>'s sprintf patch at
-	  [ruby-dev:7754].
-
-Wed Nov 10 08:28:53 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_call0): supply class parameter for each invocation.
-
-Tue Nov  9 13:21:04 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* configure.in: AC_MINIX move to before AC_EXEEXT and AC_OBJEXT.
-
-Mon Nov  8 19:52:29 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* configure.in: Renamed AC_CHAR_UNSIGNED to AC_C_CHAR_UNSIGNED.
-
-	* configure.in: Added default to AC_CHECK_SIZEOF().
-
-Mon Nov  8 14:28:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (stmt): rescue modifier added to the syntax.
-
-	* keywords: kRESCUE_MOD added.
-
-	* eval.c (rb_f_eval): fake outer scope when eval() called without
-	  bindings.
-
-	* eval.c (rb_f_binding): should copy last_class in the outer frame too.
-
-Sun Nov  7 18:31:04 1999  Yasuhiro Fukuma  <yasuf@big.or.jp>
-
-	* eval.c (is_defined): last_class may be 0.
-
-Sat Nov  6 19:26:55 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* Makefile.in: Added depend entry make parse.@OBJEXT@ from parse.c
-	  for UCB make
-
-Thu Nov  4 17:41:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): \< (wordbeg), \> (wordend) disabled.
-
-Wed Nov  3 08:52:57 1999  Masaki Fukushima  <fukusima@goto.info.waseda.ac.jp>
-
-	* io.c (Init_IO): forgot to use INT2FIX() around SEEK_SET, etc.
-
-Wed Nov  3 00:25:20 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_split_method): use mbclen2() to handle kcode
-	  option of regexp objects.
-
-Mon Nov  1 14:22:15 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* eval.c (rb_eval): reduce recursive calls to rb_eval()
-	  case of ||= and &&= .
-
-Sun Oct 31 13:12:42 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* regex.c (re_compile_pattern): wrong [\W] match.
-
-Fri Oct 29 16:57:30 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/nkf/lib/kconv.rb: new String methods (kconv, tojis, toeuc,
-	  tosjis).
-
-	* time.c (time_s_at): now accepts optional second argument to
-	  specify micro second.
-
-Thu Oct 28 13:35:40 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_split_method): should be mbchar aware with
-	  single char separators.
-
-Wed Oct 27 12:57:21 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* random.c (rb_f_srand): random seed should be unsigned.
-
-Tue Oct 26 23:58:15 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_collect): collect for better performance.
-
-Tue Oct 26 19:20:54 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* marshal.c (r_object): should register class/module objects.
-
-Sat Oct 23 15:59:39 1999  Takaaki Tateishi  <ttate@jaist.ac.jp>
-
-	* process.c (rb_f_system): should require at least one argument.
-
-Sat Oct 23 12:42:44 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* enum.c (enum_collect): collect without block will collect
-	  elements in enumerable.
-
-Thu Oct 21 16:14:19 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (moreswitches): function to process string option;
-	  the name is stolen from perl (not implementation).
-
-	* ruby.c (proc_options): use RUBYOPT environment variable to
-	  retrieve the default options.
-
-	* dir.c (fnmatch): use eban's fnmatch; do not depend on system's
-	  fnmatch (which may have portability problem) anymore.
-
-Wed Oct 20 15:14:24 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (marshal_load): should protect the generated object
-	  table (arg->data) from GC.
-
-Mon Oct 18 16:15:52 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/nkf/nkf.c (rb_nkf_kconv): output should be NUL terminated.
-
-Mon Oct 18 09:03:01 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb: 1.0.3
-
-	* lib/net/pop.rb: new methods POP3Command#uidl, POPMail#uidl.
-
-Sun Oct 17 03:35:33 1999  Masaki Fukushima  <fukusima@goto.info.waseda.ac.jp>
-
-	* array.c (rb_ary_pop): forgot some freeze checks.
-
-Sat Oct 16 12:57:53 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* array.c (rb_ary_sort): always returns the copied array.
-
-Fri Oct 15 22:50:41 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* error.c (sys_nerr): on CYGWIN, it is _sys_nerr.
-
-Fri Oct 15 01:32:31 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* io.c (rb_io_ctl) :need to use NUM2ULONG, not NUM2INT.
-
-	* ext/Win32API/Win32API.c (Win32API_Call): need to use NUM2ULONG,
-	  not NUM2INT.
-
-Fri Oct 15 00:22:30 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (Init_Regexp): super class of the MatchingData, which was
-	  Data, to be Object.
-
-	* eval.c (ruby_run): evaluate required libraries before load &
-	  compiling the script.
-
-	* parse.y (lex_getline): retrieve a line from the stream, saving
-	  lines in the table in debug mode.
-
-	* eval.c (call_trace_func): treat the case ruby_sourcefile is null.
-
-Thu Oct 14 02:00:10 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (string): compile time string concatenation.
-
-Wed Oct 13 07:28:09 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb: 1.0.2
-
-	* lib/net/session.rb: new method Session#set_pipe.
-
-	* lib/net/session.rb, smtp.rb, pop.rb: add RD documentation.
-
-Wed Oct 13 02:17:05 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* array.c (rb_ary_plus): remove recursion.
-
-	* array.c (rb_ary_sort_bang): detect modify attempt.
-
-Wed Oct 13 02:17:05 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (block_pass): should copy block to prevent modifications.
-	  tag in the structure should be updated from latest prot_tag.
-
-	* eval.c (proc_s_new): tag in struct BLOCK should not point into
-	  unused stack.
-
-	* dir.c (dir_s_glob): iterate over generated matching filenames if
-	  the block is given to the method.
-
-	* array.c (rb_ary_at): new methods; at, first, last.
-
-	* hash.c (rb_hash_fetch): raises exception unless the default
-	  value is supplied.
-
-	* hash.c (rb_hash_s_create): need not remove nil from value.
-
-	* hash.c (rb_hash_aset): setting value to nil does not remove key
-	  anymore.
-
-Tue Oct 12 22:29:04 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_read): length may be 0 or negative.
-
-Tue Oct 12 13:26:27 1999  Jun-ichiro itojun Hagino  <itojun@itojun.org>
-
-	* signal.c (posix_signal): RETSIGTYPE may be void.
-
-Tue Oct 12 03:28:03 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* array.c (rb_ary_delete_at): allows negative position.
-
-Mon Oct 11 17:42:25 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (rb_intern): should generate distinct ID_ATTRSET symbols
-	  for the name with multiple `='s at the end.
-
-	* Makefile.in (CPPFLAGS): separate cpp flags from CFLAGS.
-
-Mon Oct 11 07:27:05 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): should not execute the `else' clause on the
-	  case the exceptions are handled by the `rescue' clause.
-
-	* signal.c (Init_signal): ignore SIGPIPE by default.
-
-Wed Oct  6 17:13:19 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* ruby.c (addpath): rubylib_mangled_path() modified.
-
-Mon Oct  4 12:42:32 1999  Kazuhiko Izawa  <izawa@erec.che.tohoku.ac.jp>
-
-	* pack.c (pack_unpack): % in printf format should be %%.
-
-Mon Oct  4 10:01:40 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_obj_instance_variables): should always return
-	  array for all object can have instance variables now.
-
-Mon Oct  4 00:08:34 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (OFF16): need to adjust pointer address to pack/unpack on
-	  64bit machines.
-
-Sun Oct  3 03:05:59 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* time.c (time_arg): mktime y2k problem.
-
-Sun Sep 26 16:54:45 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* parse.y (here_document): `\r' handling for here documents.
-
-Wed Sep 22 09:20:11 1999  Masahiro Tomita  <tommy@tmtm.org>
-
-	* ext/socket/socket.c: SOCKS5 support.
-
-Wed Sep 22 07:33:23 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb: 1.0.1
-
-	* lib/net/pop.rb: APOP did not work.
-
-	* lib/net/pop.rb: modify the way to make APOP challenge.
-
-Wed Sep 22 00:35:30 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_include): should return boolean value.
-
-	* regex.c (re_compile_fastmap): wrong comparison with mbc.
-
-	* eval.c (specific_eval): default sourcefile name should be
-	  "(eval)" for module_eval etc.
-
-Wed Sep 22 00:06:07 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/Makefile: update rules.
-
-	* io.c (io_fread): should not assign in char, it maybe -1.
-
-Tue Sep 21 23:57:54 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (call_trace_func): should not propagate retval in
-	  trace_func.
-
-Mon Sep 20 21:35:39 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/win32.c (myselect): assume non socket files are always
-	  readable/writable.
-
-Mon Sep 20 01:08:02 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_fread): should not block other threads.
-
-	* io.c (rb_io_synchronized): renamed from rb_io_unbuffered(); do
-	  not call setbuf(NULL) anymore.
-
-Sat Sep 18 13:45:43 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* stable version 1.4.2 released.
-
-Fri Sep 17 23:24:17 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* eval.c (rb_f_missing): dumped core if no argument given.
-
-Fri Sep 17 23:21:06 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* win32/win32.c (myselect): translate WSAEINTR, WSAENOTSOCK into
-	  UNIX errno constants.
-
-Fri Sep 17 00:52:27 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (arg): assignable() may return 0.
-
-Thu Sep 16 20:46:23 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* eval.c (rb_eval): was doubly evaluating the return expression.
-
-Thu Sep 16 18:40:08 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* stable version 1.4.1 released.
-
-Thu Sep 16 11:33:22 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* string.c (rb_str_match): should return nil.
-
-Wed Sep 15 22:46:37 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_s_quote): should quote `-' too.
-
-Tue Sep 14 15:23:22 1999  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
-
-	* parse.y (yylex): no need to ignore `\r' here.
-
-	* parse.y (nextc): strip `\r' from text.
-
-	* parse.y (nextc): support `__END__\r\n' type terminator.
-
-Mon Sep 13 10:49:19 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* eval.c (rb_eval): needless RTEST(ruby_verbose) removed.
-
-Mon Sep 13 09:10:11 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/net/session.rb, smtp.rb, pop.rb: 1.0.0
-
-Wed Sep  8 11:37:38 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* time.c (make_time_t): bit more strict comparison.
-
-Tue Sep  7 00:50:56 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* range.c (range_each): use rb_str_upto() for strings.
-
-	* string.c (rb_str_upto): set upper limit by comparing curr <= end.
-
-	* range.c (range_each): should check equality to handle magic
-	  increment.
-
-Mon Sep  6 22:43:33 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): break/next/redo available within -n/-p loop.
-
-Fri Sep  3 11:14:31 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* compar.c (cmp_equal): should not raise exception; protect by
-	  rb_rescue().
-
-Thu Sep  2 05:23:05 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* file.c (rb_file_s_expand_path): use dirsep, instead of character
-	  literal '/'.
-
-	* file.c (rb_file_s_expand_path): reduce multiple dirsep at the top.
-
-Wed Sep  1 00:28:27 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_call): call rb_undefined() if a method appears not to
-	  be exist explicitly from cache.
-
-	* eval.c (rb_method_boundp): check method cache before calling
-	  rb_get_method_body().
-
-	* eval.c (rb_get_method_body): store method non-existence
-	  information in the cache.
-
-	* random.c (rb_f_srand): use getpid(2) to generate seed.
-
-	* regex.c (re_match): do not apply partial mbc match for
-	  charset_not.
-
-	* regex.c (re_compile_pattern): put extended literal prefix (0xff)
-	  only before numeric literals, not before all >0x80 char.
-
-	* regex.c (re_compile_pattern): put numeric literal in extended
-	  charset region, not normal charset bits.
-
-	* regex.c (re_compile_fastmap): calculate fastmap for charset and
-	  charset_not to treat numeric literal (e.g. \246) specially.
-
-Fri Aug 28 17:32:55 1999  Yasuhiro Fukuma  <yasuf@big.or.jp>
-
-	* eval.c (rb_eval): should set return value (nil) explicitly if a
-	  value is omitted for return statement.
-
-Sun Aug 26 20:26:40 2001  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* ext/readline/readline.c: restore terminal mode
-	  even if readline() interrupted.
-
-	* ext/readline/readline.c: returned string need to
-	  be tainted.
-
-	* ext/readline/readline.c: fixed memory leak.
-
-	* ext/readline/readline.c: allow negative index.
-
-	* ext/readline/readline.c: added Readline::HISTORY.size
-	  same as Readline::HISTORY.length
-
-	* ext/readline/readline.c: allow conditional parsing
-	  of the ~/.inputrc file by `$if Ruby'.
-
-	* ext/readline/extconf.rb: check whether the
-	  libreadline has the variable `rl_completion_append_character'
-	  (this feature was implemented from GNU readline 2.1).
-
-Thu Aug 26 15:06:11 1999  Masaki Fukushima  <fukusima@goto.info.waseda.ac.jp>
-
-	* gc.c (rb_gc): local variables may be placed beyond stack_end, so
-	  use an address from alloca(1) on non C_ALLOCA platforms.
-
-Thu Aug 26 01:24:17 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c (rb_f_sprintf): "%%" is legal, but "%3.14%" is not.
-
-Mon Aug 23 00:00:54 1999  Tsukada Takuya  <tsukada@fminn.nagano.nagano.jp>
-
-	* regex.c (re_compile_fastmap): wrong macro caused memory leak.
-
-Sat Aug 21 11:30:51 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (ADJ): should not adjust addresses to data on heap.
-
-Fri Aug 20 20:50:58 1999  Kenji Nagasawa  <kenn@hma.att.ne.jp>
-
-	* defines.h (PATH_SEP): path separator is ";" for OS/2.
-
-Thu Aug 19 10:50:43 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* gc.c (rb_gc): add volatile to avoid GCC optimize bug(?).
-
-Wed Aug 18 23:48:10 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* due to disk trouble, some change records were lost.  several
-	  modification made to eval.c, gc.c, io.c, pack.c,
-	  ext/extmk.rb.in, and lib/mkmf.rb.
-
-Fri Aug 13 15:41:39 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* stable version 1.4.0 released.
-
-Fri Aug 13 03:16:07 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (argf_forward): since $stdout may be non-IO, ARGF.file is
-	  not guaranteed to be IO.  check and forwarding added to every ARGF
-	  method.
-
-	* io.c (set_outfile): $stdout/$stderr may not be IO now.
-
-	* io.c (set_stdin): $stdin may not be IO now.
-
-	* range.c (rb_range_beg_len): round `end' to length as documented.
-
-	* io.c (Init_IO): preserve original stdin/stdout/stderr.
-
-Thu Aug 12 13:44:33 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (Init_load): require receives 1 argument.
-
-	* eval.c (frame_dup): should clear tmp to avoid dangling
-	  references.
-
-Wed Aug 11 13:33:13 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* eval.c (rb_eval): no automatic aggregate initialization.
-
-	* eval.c (module_setup): ditto.
-
-Wed Aug 11 18:18:41 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* eval.c (yield_under_i): automatic aggregate initialization is an
-	  ANSI feature.
-
-Wed Aug 11 10:10:02 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): parse `[].length==0' as `([].length)==0', not
-	  `([].length=)=0'
-
-	* parse.y (yylex): parse `[].length!=0' as `([].length)!=0', not
-	  `([].length!)=0'
-
-	* parse.y (peek): peek-in lexical buffer.
-
-Wed Aug 11 00:34:05 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): bug on backward jump adjustment concerning
-	  stop_paren.
-
-Tue Aug 10 14:54:25 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/nkf/nkf.c (rb_nkf_guess): binary detection was wrong.
-
-Tue Aug 10 00:07:36 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_clone): should use CLONESETUP().
-
-Mon Aug  9 23:57:07 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.h (CLONESETUP): should have copied generic instance
-	  variables too.
-
-Mon Aug  9 10:46:54 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/extconf.rb: add check for <arpa/nameser.h> and
-	  <resolv.h>.
-
-Sat Aug  7 13:19:06 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* numeric.c (flo_cmp): comparing NaN should not return value.
-	  raises FloatDomainError.
-
-Sat Aug  7 03:09:08 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (blk_free): free copied frames too.
-
-	* eval.c (frame_dup): should copy previous frames from stack to
-	  heap to preserve frame information.
-
-Fri Aug  6 15:01:07 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.3.7 - version 1.4 beta
-
-	* ext/socket/socket.c (s_recv): UDPsocket#recvfrom now returns
-	  IPsocket#addr information.
-
-	* array.c (rb_ary_subary): ary[-3,3] should not return nil.
-
-Thu Aug  5 10:58:01 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thread_mark): protect old ruby_frame from GC during it
-	  replaced by eval().
-
-	* eval.c (eval): do not modify frame.prev; binding should preserve
-	  information about calling() too.
-
-	* eval.c (rb_yield_0): no arity check for mere yield; but only for
-	  Proc#call.
-
-Tue Aug  3 22:07:13 1999  Kazuhiro HIWADA  <hiwada@kuee.kyoto-u.ac.jp>
-
-	* object.c (rb_mod_clone): should check if iv_tbl, m_tbl are
-	  initialized.
-
-Tue Aug  3 19:03:02 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (rb_any_cmp): use rb_with_disable_interrupt() to ensure
-	  clearance of rb_prohibit_interrupt even on failure.
-
-	* eval.c (rb_with_disable_interrupt): new function added.
-
-Sat Jul 31 23:23:44 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_create_0): set THREAD_RAISED flag on thread
-	  termination by exception.
-
-	* eval.c (rb_thread_join): `$!' may not be nil for the threads
-	  created in rescue clause.
-
-	* eval.c (rb_thread_status): ditto.
-
-	* eval.c (rb_thread_join): should re-raise exception for already
-	  dead threads too.
-
-Fri Jul 30 17:56:54 1999  GOTO Kentaro  <gotoken@math.sci.hokudai.ac.jp>
-
-	* object.c (rb_mod_ge): wrong comparison.
-
-Fri Jul 30 12:15:44 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/tcltklib/extconf.rb: win32 support.
-
-	* lib/mkmf.rb: use append_library().
-
-	* ext/extmk.rb.in: ditto.
-
-Fri Jul 30 02:11:48 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_delete): should return nil for deleting non
-	  existing item.
-
-	* io.c (rb_io_close): call rb_sys_wait() on explicit close.
-
-	* io.c (rb_io_fptr_close): do not call rb_sys_wait() on finalize.
-
-	* eval.c (yield_under_i): cbase context should be maintained for
-	  Module#module_eval().  suggested by <inaba@st.rim.or.jp>.
-
-Wed Jul 28 01:18:28 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* Makefile.in: add -I$(hdrdir)/lib to install using ftools.
-
-	* util.c: use HAVE_FCNTL_H, not HAVE_FCNTL
-
-Wed Jul 28 18:24:45 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.3.6 - version 1.4 alpha
-
-Tue Jul 27 09:38:08 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* eval.c (rb_eval): reduce recursive rb_eval() calls by
-	  NODE_BLOCKs.
-
-Tue Jul 27 01:20:40 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* file.c (rb_file_s_expand_path): drive letter patch.
-
-Mon Jul 26 02:36:31 1999  Shugo Maeda  <shugo@netlab.co.jp>
-
-	* eval.c (rb_load): should clear ruby_nerr.
-
-	* eval.c (rb_thread_join): oldbt should not be empty to unshift.
-
-Sun Jul 25 12:09:16 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* dir.c (push_braces): should treat nested braces.
-
-Fri Jul 23 02:49:49 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (rb_hash_clear): dummy argument added; suggested by
-	  <eguchi@shizuokanet.ne.jp>.  thanks.
-
-Thu Jul 22 19:37:22 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_join): get_backtrace() may return Qnil.
-	  typecheck added.
-
-Tue Jul 20 14:36:43 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* range.c (range_each): do not treat String specially (for future
-	  override).
-
-Tue Jul 20 02:28:34 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_gets): $_ should be nil, when get returns nil.
-
-	* io.c (rb_f_gets): ditto.
-
-Mon Jul 19 17:13:09 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_fastmap): should continue fastmap compile
-	  for anychar_repeat, for it's repeat anyway.
-
-Mon Jul 26 13:33:45 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* lib/jcode.rb: replaced by faster code.
-
-Mon Jul 19 01:57:28 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/mkmf.rb: no longer use install program.
-
-	* ext/extmk.rb.in: use miniruby to install programs.
-
-Sat Jul 17 00:06:21 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (ipaddr): don't do reverse lookup if
-	  attribute do_not_reverse_lookup is set for socket classes.
-	  Experimental.  Note this is a global attribute.
-
-Fri Jul 16 22:18:29 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_eof): use feof() to check EOF already met.
-
-	* io.c (read_all): should return nil at EOF.
-
-Fri Jul 16 13:39:42 1999  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/telnet.rb: version 0.231.
-
-Fri Jul 16 10:58:22 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* regex.c (re_match): debug print removed.
-
-Fri Jul 16 09:58:15 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* many files: clean up unused variables found by gcc -Wall.
-
-	* lib/mkmf.rb: better cygwin support etc.
-
-	* ext/extmk.rb.in: ditto.
-
-	* instruby.rb: ditto.
-
-Fri Jul 16 01:37:50 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* string.c (rb_str_squeeze_bang): the type of local variable `c'
-	  should be int, not char.
-
-	* string.c (rb_str_reverse): should always return copy.
-
-Thu Jul 15 23:25:57 1999  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
-
-	* lib/debug.rb: better display & frame treatment.
-
-Thu Jul 15 21:16:41 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_each): returns self for normal termination;
-	  returns nil for break.
-
-	* string.c: non bang methods (e.g. String#sub) should always
-	  return copy of the receiver.
-
-Thu Jul 15 21:09:15 1999  Masaki Fukushima  <fukusima@goto.info.waseda.ac.jp>
-
-	* eval.c (find_file): do not add empty string to the path.
-
-	* configure.in (with-search-path): should not add empty string if
-	  the option is not supplied.
-
-Thu Jul 15 17:49:08 1999  Ryo HAYASAKA  <hayasaka@univ21.u-aizu.ac.jp>
-
-	* ext/tcltklib/tcltklib.c: move `#include "ruby.h"' forward.
-
-Thu Jul 15 16:54:16 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.3.5 - version 1.4 alpha
-
-Wed Jul 14 23:45:33 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* eval.c (ruby_init): initialize for the first time only.
-
-Tue Jul 13 00:15:19 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (rb_hash_index): re-defined; method to retrieve a key
-	  from the value.
-
-	* hash.c (Init_Hash): member? should be re-defined for Hash.
-
-Tue Jul 12 13:54:51 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* io.c (rb_file_sysopen): wrong number of argument.
-
-Mon Jul 12 11:52:35 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_f_missing): class name included in message.
-
-	* eval.c (print_undef): better error message.
-
-Sun Jul 11 05:36:17 1999  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
-
-	* lib/debug.rb: patch to show proper position.
-
-Fri Jul  9 23:56:14 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* dln.c (dln_find_1): path conv. moved to conv_to_posix_path.
-
-	* dln.c (conv_to_posix_path): path conv. should be done.
-
-Fri Jul  9 10:26:47 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* random.c (RANDOM_NUMBER): should place parentheses.
-
-Fri Jul  8 11:00:51 1999  Shugo Maeda  <shugo@netlab.co.jp>
-
-	* numeric.c (fix_div): division may be out of fixnum range.
-
-	* bignum.c (bigdivmod): proper sign calculation to result.
-
-Wed Jul  7 18:27:41 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* st.c (st_delete_safe): was modifying wrong slot.
-
-Mon Jul  5 13:17:46 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): close all files at exit.
-
-Fri Jul  2 18:00:21 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* lib/Mail/README: Mail-0.3.0 added to the distribution.
-
-Fri Jul  2 01:45:32 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_fastmap): avoid allocation of register
-	  variables for each invocation of re_match().  Suggested by
-	  Zasukhin Ruslan <ruslan@paradigmasoft.com>.  Thanks.
-
-Tue Jun 29 20:39:24 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* ext/tk/lib/tk.rb (TkVariable): bug fix; should value type check
-	  be added?
-
-	* string.c (rb_str_each_line): a bug in paragraph mode.
-
-	* ruby.c (load_file): shifted too much to skip #!.
-
-Tue Jun 29 06:50:21 1999  Wakou Aoyama  <wakou@fsinet.or.jp>
-
-	* lib/CGI.rb: 0.30 - cleanup release, incompatible.
-
-	* lib/telnet.rb: 0.22 - timeout added.
-
-Tue Jun 29 10:49:25 1999  SHIROYAMA Takayuki  <psi@fortune.nest.or.jp>
-
-	* configure.in: better Rhapsody support.
-
-	* lib/mkmf.rb: Rhapsody/NEXTSTEP support.
-
-Tue Jun 29 01:42:13 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/pty/pty.c (chld_changed): should use POSIX.1 style wait.
-
-Mon Jun 28 21:07:36 1999  KIMURA Koichi  <kbk@kt.rim.or.jp>
-
-	* ext/extmk.rb.nt: wrong result for have_library().
-
-Mon Jun 28 15:24:05 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* missing/isinf.c: OSF/1 raises SIGFPE on one()/zero().
-
-	* regex.c (re_search): should search til EOS, for patterns may
-	  match beyond the end of range.
-
-Mon Jun 28 12:49:12 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_f_select): should not accept Time objects as an
-	  argument for it is time interval.
-
-	* process.c (rb_f_sleep): ditto.
-
-	* file.c (test_s): should return nil for false condition.
-
-Mon Jun 28 12:23:52 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* bignum.c (rb_dbl2big): typo.
-
-	* file.c (rb_f_test): ditto.
-
-	* string.c (rb_str_crypt): wrong message.
-
-Sun Jun 27 19:50:11 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* eval.c (rb_f_exit): should have treat signed integer status, not
-	  VALUE.
-
-	* process.c (rb_f_exit_bang): should work like exit().
-
-Sun Jun 27 16:21:32 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* string.c (rb_str_rindex): wrong position to search.
-
-Sat Jun 26 04:05:30 1999  Takaaki Tateishi  <ttate@jaist.ac.jp>
-
-	* configure.in (configure_args): --with-search-path to specify
-	  additional ruby search path.
-
-	* ruby.c (ruby_prog_init): additional search path.
-
-Fri Jun 25 13:09:12 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (pack_unpack): needed to initialize natint.
-
-	* regex.c (re_compile_pattern): add start_paren to avoid too much
-	  finalization on maybe_finalize_jump.
-
-Fri Jun 25 13:07:20 1999  Koji Oda  <oda@bsd1.qnes.nec.co.jp>
-
-	* missing/isinf.c: include "config.h" added.
-
-Fri Jun 25 07:25:05 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* lib/mkmf.rb: initialize $(topdir).
-
-	* ext/extmk.rb.in (install_rb): install lib/*.rb properly.
-
-	* configure.in (linux): specifies -rpath on --enable-shared.
-
-	* configure.in (aix): ruby.imp must reside in $(topdir).
-
-Thu Jun 24 19:11:29 1999  Yoshida Masato  <yoshidam@yoshidam.net>
-
-	* parse.y (rb_str_extend): multi-byte identifier in expression
-	  interpolation in strings.
-
-	* parse.y (yylex): support multi-byte char identifiers.
-
-Thu Jun 24 15:27:13 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (f_arg): check duplicate argument names.
-
-	* gc.c (rb_gc_mark): marking wrong member for NODE_ARGS.
-
-	* string.c (rb_str_rindex): POSITION specifies start point, not
-	  end point.
-
-Thu Jun 24 13:00:17 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (print_mbc): wrong boundary.
-
-	* pack.c (uv_to_utf8): raises ArgError for too big value.
-
-Thu Jun 24 11:02:51 1999  Yoshida Masato  <yoshidam@yoshidam.net>
-
-	* pack.c (uv_to_utf8): mask needed.
-
-Wed Jun 23 21:03:56 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* ruby.h (struct RFile): remove iv_tbl from struct. instance
-	  variables are handled as generic ivs.
-
-Wed Jun 23 22:06:26 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* pack.c (utf8_to_uv): pack to 7 bytes sequence.
-
-	* pack.c (uv_to_utf8): wrong boundary.
-
-	* pack.c (pack_unpack): should treat as unsigned long.
-
-Wed Jun 23 15:10:11 1999  Inaba Hiroto  <inaba@sdd.tokyo-sc.toshiba.co.jp>
-
-	* parse.y (parse_string): failed to parse nested braces.
-
-	* parse.y (parse_regx): nested braces within #{} available.
-
-Wed Jun 23 11:18:38 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (slow_search): wrong shift width for mbcs.
-
-	* eval.c (rb_thread_save_context): should not clear th->locals.
-
-Wed Jun 23 02:06:14 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): UMINUS binds too tight with digits. changed so
-	  that -2**2 => -4.
-
-	* parse.y (close_paren): `do' for expr termination now works it
-	  used to be.
-
-Wed Jun 22 18:26:42 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* pack.c (pack_pack): should initialize local variable `j'.
-
-Wed Jun 22 15:24:59 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* parse.y (here_document): a bug for multiline heredoc.
-
-Tue Jun 22 15:06:36 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/socket/socket.c (ruby_socket): forgot to return fd
-	  explicitly.
-
-Tue Jun 22 13:34:12 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* rubyio.h (MakeOpenFile): should initialize member `iv_tbl'.
-
-Wed Jun 22 10:35:51 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* io.c (rb_io_gets_internal): getc(3) may not set errno on
-	  interrupt.
-
-Mon Jun 21 22:39:28 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (call_required_libraries): ruby_sourceline should be
-	  cleared before loading libraries.
-
-	* io.c (set_stdin): do not use reopen(), so that we don't need to
-	  dup original stdin before assigning $stdin.
-
-Mon Jun 21 18:04:27 1999  Ryo HAYASAKA  <hayasaka@univ21.u-aizu.ac.jp>
-
-	* ext/dbm/dbm.c: include <cdefs.h> for solaris 2.6.
-
-Mon Jun 21 15:59:47 1999  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
-
-	* ext/socket/socket.c (ip_addrsetup): forgot to put `else'.
-
-Mon Jun 21 15:38:37 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (fptr_finalize): remove rb_syswait() invocation to avoid
-	  wait4(2) within GC.  rb_syswait() moved to rb_io_fptr_close().
-
-Mon Jun 21 12:05:59 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* dir.c (dir_s_glob): remove MAXPATHLEN restriction.
-
-	* ext/md5/md5init.c (md5_hexdigest): should have used "%02x".
-
-Sun Jun 20 19:50:38 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* string.c (rb_str_each_line): should have checked string
-	  boundary.
-
-Sat Jun 19 22:24:12 1999  Kenji Nagasawa  <kenn@hma.att.ne.jp>
-
-	* OS/2 patch improved.
-
-Fri Jun 18 08:30:17 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (r_byte): add data length check.
-
-	* ext/tcltklib/tcltklib.c (_timer_for_tcl): was doing busy-wait.
-
-Tue Jun 15 10:01:21 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* configure.in: remove trailing slash from interpreter embedded
-	  shared library path.
-
-	* configure.in (INSTALL_DLLIB): install shared lib with 0555.
-
-	* instruby.rb: changed mode for shared library into 0555.
-
-Fri Jun 11 23:27:00 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* ext/etc/etc.c (etc_passwd): should return nil, not exception for
-	  call after last passwd entry.
-
-Fri Jun 11 15:21:21 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (rb_gc_mark_locations): add safety margin 1.
-
-	* eval.c (ruby_run): should protect toplevel node tree.
-
-	* ext/etc/etc.c (etc_group): dumps core if there's no more group.
-
-Fri Jun 11 01:50:25 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (ruby_run): Init_stack() was called too late; local
-	  variables happened to be higher (or lower) than stack_start.
-
-Thu Jun 10 16:41:48 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c: do not call `initialize' for IO objects.  So with Array,
-	  Hash, Range, and Time objects.
-
-	* ext/curses/curses.c (curses_getch): made thread aware using
-	  rb_read_check().
-
-	* ext/curses/curses.c (window_getch): ditto.
-
-	* ext/curses/curses.c (curses_getstr): made (partially) thread
-	  aware using rb_read_check().
-
-	* ext/curses/curses.c (window_getstr): ditto.
-
-	* io.c (rb_read_check): new function to help making something
-	  (like extension libraries) thread aware.
-
-	* eval.c (is_defined): `defined? super' should be true even for
-	  private superclass methods.
-
-Fri Jun 10 13:42:10 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* pack.c (pack_pack): template `Z' should be allowed.
-
-Wed Jun  9 13:26:38 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_loading): modified to avoid nested race
-	  condition of require().
-
-	* ext/tcltklib/tcltklib.c (ip_invoke): queue invocation on non
-	  main threads.
-
-	* ext/tcltklib/tcltklib.c (lib_mainloop): flush invocation
-	  queues periodically.
-
-	* version.c (ruby_show_version): now print the message to stdout.
-
-	* version.c (ruby_show_copyright): ditto.
-
-Tue Jun  8 00:00:34 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (pack_unpack): append sentinel (NUL) to the string.
-
-	* ext/md5/md5init.c (md5_hexdigest): new method to obtain
-	  printable hash string.
-
-	* ext/md5/md5init.c (md5_update): should return self.
-
-	* pack.c (pack_pack): undocumented template 'U' for UTF8.
-
-	* pack.c (pack_unpack): ditto.
-
-	* marshal.c (r_byte): should replace getc() with rb_getc().
-
-	* io.c (rb_getc): getc() replacement uses READ_DATA_PENDING() and
-	  rb_thread_wait_fd().
-
-Mon Jun  7 23:23:38 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (rb_mod_clone): should call CLOSESETUP().
-
-	* eval.c (bind_clone): should call CLONESETUP() for new clone.
-
-Sat Jun  5 10:32:40 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_oct): binary (e.g. 0b10111) support.
-
-	* variable.c (rb_const_set): raise warning, not exception.
-
-	* parse.y (yycompile): initialize parser internal variables.
-
-	* parse.y (close_paren): set lex_state to EXPR_PAREN after closing
-	  parenthesis.
-
-	* parse.y (yylex): returns kDO for `do' right after method_call.
-
-Thu Jun  3 11:05:30 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* regex.c (read_backslash): should decode \b within class.
-
-Thu Jun  3 01:06:18 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* dln.c (dln_load): AIX improvement (aix_findmain removed).
-
-Wed Jun  2 00:41:31 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (pack_unpack): new undocumented template Z which strips
-	  stuff after first null.
-
-	* pack.c (pack_pack): should preserve specified length of the
-	  resulting string.
-
-Tue Jun  1 15:29:33 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (ruby_socket): retry after GC, if socket(2)
-	  failed on EMFILE or ENFILE.
-
-	* ext/socket/socket.c (sock_s_socketpair): ditto.
-
-	* eval.c (module_setup): need to add PUSH_VAR/POP_VAR to clear
-	  dyna vars link list.
-
-	* version.h (RUBY_RELEASE_CODE): integer macro constant for source
-	  version detection.
-
-Sun May 30 22:19:12 1999  Kenji Nagasawa  <kenn@tcp-ip.or.jp>
-
-	* ext/socket/socket.c: emx/gcc 0.9d now fixes things about
-	  AF_UNIX.
-
-	* process.c: OS/2 EMX kludge.
-
-	* Makefile.in (strncasecmp.o): added dependency.
-
-Mon May 31 16:06:28 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.3.4 - preliminary release for 1.4
-
-Mon May 31 15:57:41 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_fptr_close): close on IO which main_thread is
-	  waiting cause serious exception, that vanishes the actual fd
-	  closing.  Invocation of rb_thread_fd_close() is deferred
-	  a little.
-
-Sat May 29 18:27:13 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* regex.c (re_match): stack boundary check needed.
-
-Sat May 29 12:27:00 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_invoke): proper ref count management
-	  to avoid leak.  I HATE REF COUNTING!!
-
-	* eval.c (ruby_run): moved ruby_require_libraries() to handle `-r'
-	  from ruby_options() to avoid stack corruption for threads
-	  created in libraries.
-
-Sat May 29 02:22:12 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_yield_0): when `for' appeared in blocks, it
-	  introduced new scope for local variables.
-
-Fri May 28 17:16:49 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_squeeze_bang): squeeze AND of the arguments.
-	  UNDOCUMENTED.
-
-	* string.c (rb_str_count): new UNDOCUMENTED method.
-
-	* string.c (rb_str_delete_bang): delete AND of the arg ranges.
-	  UNDOCUMENTED FEATURE for 1.3.x.
-
-	* ext/socket/socket.c (setipaddr): re-wrote using ip_addrsetup().
-
-	* ext/socket/socket.c (ip_addrsetup): decode symbolic address
-	  <broadcast>.
-
-Thu May 27 12:27:42 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (tr_trans): should handle NUL (\0) within strings.
-
-Tue May 25 16:45:11 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_f_syscall): syscall may return values other than zero
-	  on success.
-
-	* regex.c (re_match): handle empty loop properly (hopefully).
-
-	* regex.c (re_match): remove empty group check, because it does
-	  not help non-grouping parentheses (?:..).
-
-	* regex.c (re_compile_fastmap): treating try_next, finalize_push
-	  wrong way.
-
-	* regex.c: remove some obsolete functions such as
-	  group_match_null_string_p().
-
-Mon May 24 14:47:54 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (read_backslash): read backslash by regex.
-
-Sun May 23 19:44:58 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ext/pty/pty.c (getDevice): portability patch.
-
-Fri May 21 23:01:26 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/getaddrinfo.c (GET_AI): should set error code.
-
-Thu May 20 03:43:44 1999  Jun-ichiro itojun Hagino  <itojun@itojun.org>
-
-	* ext/socket/socket.c: you should use sockaddr_storage to handle
-	  IPv6 addresses.
-
-	* ext/socket/getaddrinfo.c (getaddrinfo): prevent retrieving
-	  AF_INET6 address if hints.ai_flags == AI_PASSIVE.
-
-Wed May 19 12:27:07 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (exec_end_proc): should protect exceptions.
-
-	* gc.c (run_final): ditto.
-
-	* parse.y (f_rest_arg): allow just * for rest arg.
-
-	* parse.y (mlhs_basic): allow * without formal argument.
-
-	* regex.c (re_match): the variable `part' should be initialized.
-
-Tue May 18 15:25:45 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): a bug in range adjustment.
-
-Tue May 18 11:35:59 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* dln.c (conv_to_posix_path): path_len argument added.
-
-Mon May 17 12:26:31 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (fix_rev): should treat Fixnum as signed long.
-
-	* eval.c (massign): add strict number check for yield (and call).
-
-	* eval.c (proc_arity): new method to return number of arguments.
-
-	* eval.c (method_arity): new method to return number of arguments.
-
-	* parse.y (read_escape): char may be unsigned.
-
-	* string.c (rb_str_succ): ditto.
-
-	* string.c (tr_trans): ditto.
-
-	* object.c (Init_Object): methods `&', `|', `^' are added to nil.
-
-	* range.c (rb_range_beg_len): it should be OK for [0..-len-1].
-
-	* regex.c (re_search): search for byte literal within mbcs.
-
-	* regex.c (is_in_list): parsh
-
-	* regex.c (re_compile_fastmap): should have not alter the loop
-	  variable `j' if TRASLATE_P().
-
-	* regex.c (re_compile_pattern): escaped characters should be read
-	  by PATFETCH_RAW(c).
-
-Sat May 15 11:23:51 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): endline2 (\Z) should not match at the point
-	  between a newline and end-of-line, like endline ($).
-
-	* class.c (include_class_new): should initialize iv_tbl to share
-	  between module and iclass.
-
-Fri May 14 08:50:27 1999  Akira Endo  <akendo@t3.rim.or.jp>
-
-	* regex.c (re_compile_fastmap): it should be k != 0 to skip.
-
-Fri May 14 12:46:56 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_load): a bug in old marshal format support.
-
-	* instruby.rb: make site_ruby directory.
-
-Fri May 14 10:18:02 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* regex.c (re_match): a bug in inline `.*' etc.
-
-Fri May 14 09:58:46 1999  Minero Aoki  <aamine@dp.u-netsurf.ne.jp>
-
-	* ruby.c (addpath): should have specified string length.
-
-Thu May 13 10:40:44 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval_string_wrap): new function.
-
-	* regex.c (re_compile_pattern): POSIX line match should alter
-	  behavior for `^' and `$' to begbuf and endbuf2 respectively.
-
-	* ext/pty/pty.c: un-ANSI-fy function arguments.
-
-Wed May 12 14:19:38 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* struct.c (iv_get): in case of inheritance of generated struct
-	  class, __member__ and __size__ should also be inherited.
-	  Thanks for Pros Yeboah <yeboah@tu-harburg.de>.
-
-	* io.c (rb_f_gets_internal): should check number of arguments
-	  before checking rb_rs == rb_default_rs.  Thanks for Koji Arai
-	  <JCA02266@nifty.ne.jp>.
-
-Tue May 11 08:29:28 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): .?, .+ did not work.
-
-Mon May 10 00:59:33 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/jcode.rb: forgot to squeeze on reverse (complement) case.
-
-	* string.c (tr_squeeze): should not set modify flag to be honest,
-	  if the string is not modified.
-
-	* signal.c (Init_signal): SIGTERM should not be handled.
-
-	* regex.c (re_match): seeking for longest match is now optional,
-	  which can be set using RE_OPTION_POSIXMATCH.  This satisfies
-	  POSIX longest match as much as Emacs's posix-* functions, which
-	  are known to be incomplete.
-
-Sun May  9 13:04:01 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/socket.c (sock_s_getaddrinfo): conversion from
-	  Fixnums to C integers needed.
-
-Sun May  9 11:51:43 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* range.c (range_eqq): reverse condition.
-
-	* range.c (range_s_new): default should be end inclusive.
-
-Sat May  8 03:27:51 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (thread_connect): replace nasty
-	  rb_thread_fd_writable() with rb_thread_select().
-
-Fri May  7 20:49:00 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* ext/socket/getaddrinfo.c (inet_pton): wrong parameter to
-	  inet_aton().
-
-	* ext/socket/addrinfo.h (__P): silly cut and paste typo.
-
-Fri May  7 17:03:57 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* dir.c (glob): removed GPL'ed glob.c completely.
-
-Fri May  7 08:17:19 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/sdbm/extconf.rb: sdbm extension added to the distribution.
-
-Fri May  7 01:42:20 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (tcp_s_gethostbyname): avoid using struct
-	  sockaddr_storage.
-
-Thu May  6 13:21:41 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_indexes): should not use rb_ary_concat().
-
-Thu May  4 12:34:18 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* parse.y (parse_string): there should be newline escape by
-	  backslashes in strings.
-
-	* parse.y (parse_qstring): ditto.
-
-Mon May  3 04:37:20 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* ext/tcltklib/extconf.rb: better search for libX11.
-
-	* range.c (range_s_new): embarrassing =/== typo.
-
-	* re.c (Init_Regexp): failed to set default kcode.
-
-Mon May  3 02:39:55 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* ext/socket/socket.c (open_inet): typo (res and res0).
-
-Tue May  4 02:07:49 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* mkconfig.rb: leave undefined $(VARIABLE) unexpanded in the
-	  Config::CONFIG hash table.
-
-Mon May  3 09:37:22 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): expand exactn{n} at compile time.
-	  handles stop_paren specially.
-
-	* regex.c (re_compile_pattern): expand x{n} at compile time.
-
-	* regex.c (re_search): posix line match should be checked.
-
-	* regex.c (re_search): a bug in anchor condition.
-
-Fri Apr 30 18:57:41 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.3.3
-
-	* string.c (rb_str_rindex): position should be END point, not
-	  START point.
-
-	* re.c (rb_reg_search): pos means end point on reverse now.
-
-	* array.c (rb_ary_s_create): should clear ary->ptr to avoid
-	  potential gc crash.
-
-Fri Apr 30 15:24:58 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/addrinfo.h: compatibility hack for ipv4.
-
-	* ext/socket/socket.c: itojun's ipv6 patches applied.
-
-	* ext/socket/extconf.rb: detect ipv6 features based on itojun's
-	  ipv6 patches.
-
-	* ext/extmk.rb.in (enable_config): can handle --enable-xxx now.
-
-	* lib/mkmf.rb (enable_config): ditto.
-
-Fri Apr 30 05:22:23 1999  Shugo Maeda  <shugo@netlab.co.jp>
-
-	* string.c (rb_str_aset): last index should not append.
-
-Thu Apr 29 18:55:31 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* dln.c (conv_to_posix_path): remove const from args.
-
-	* ruby.c (rubylib_mangle): remove Fatal(), the obsolete function.
-
-Tue Apr 27 14:11:45 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (fname): lazy workaround for keywords did not work well.
-
-	* ext/extmk.rb.in: `--with-xxx=yyy' argument configuration.
-
-	* lib/mkmf.rb: ditto.
-
-	* misc/ruby-mode.el: forgot to handle $`.
-
-	* ext/extmk.rb.in: better AIX link support proposed by
-	  <komatsu@sarion.co.jp>.
-
-Mon Apr 26 16:46:59 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/extmk.rb.in: AIX shared library support modified.
-
-	* ext/aix_mksym.rb: ditto.
-
-	* configure.in: ditto.
-
-	* sprintf.c (rb_f_sprintf): should allocate proper sized buffer
-	  for float numbers.
-
-Sat Apr 24 00:00:16 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (operation): syntax like `a.[]=(1,2)' is allowed.
-
-Fri Apr 23 23:54:09 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (argf_binmode): binmode method added to ARGF.
-
-Fri Apr 23 13:55:22 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_f_chomp): should assign the result to $_.  or maybe
-	  sub/gsub/chop/chomp should NOT assign $_ altogether.
-
-Thu Apr 22 16:50:54 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_callcc): call scope_dup() for all scopes in
-	  the interpreter stack.
-
-Tue Apr 20 11:24:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_dump): `#' should be escaped.
-
-Tue Apr 20 02:32:42 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (parse_regx): option /p for posix match added.
-
-	* re.c (rb_reg_desc): did not print options properly.
-
-	* io.c (rb_file_s_open): initialize was called twice.
-
-Mon Apr 19 18:56:21 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* configure.in (DEFAULT_KCODE): can specify default code for
-	  $KCODE by --with-default-kcode=(euc|sjis|utf8|none).
-
-	* regex.c (IS_A_LETTER): a byte sequence shorter than mbc should
-	  not match with \w etc.
-
-Mon Apr 19 13:49:11 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (eval): should restore ruby_dyna_vars.
-
-Fri Apr 16 21:40:43 1999  Nobuyoshi Nakada  <gea02117@nifty.ne.jp>
-
-	* io.c (f_backquote): pipe_open may return nil.
-
-	* io.c (f_open): rb_io_open may return nil.
-
-	* io.c (io_s_foreach): ditto.
-
-	* io.c (io_s_readlines): ditto.
-
-	* io.c (io_defset): wrong message.
-
-Fri Apr 16 15:09:20 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (rb_str2inum): strtoul() returns long, not int.
-
-	* eval.c (rb_load): size of VALUE and ID may be different.
-
-	* util.c (mmprepare): int is too small to cast from pointers.
-
-	* config.guess: avoid 'linux-gnu' for alpha-unknown-linux.
-
-Thu Apr 15 23:46:20 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ruby.c (rubylib_mangle): mangle path by RUBYLIB_PREFIX.
-
-Wed Apr 14 23:52:51 1999  SHIROYAMA Takayuki  <psi@fortune.nest.or.jp>
-
-	* node.h (NODE_LMASK): should be long to avoid overflow.
-
-Wed Apr 14 13:14:35 1999  Katsuyuki Komatsu  <komatsu@sarion.co.jp>
-
-	* dln.c: AIX dynamic link.
-
-	* ext/aix_ld.rb: ditto.
-
-Wed Apr 14 12:19:09 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/thread.rb: Queue#{enq,deq} added.
-
-Tue Apr 13 17:43:56 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (rb_hash_s_create): Hash::[] acts more like casting.
-
-Tue Apr 13 00:33:52 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_stdio_set): warning for assignment to the variables
-	  $std{in,out,err}.
-
-Mon Apr 12 23:12:32 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_reopen): check for reopening same IO.
-
-Fri Apr  9 17:45:11 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (rb_compile_string): bug for nested eval().
-
-	* regex.c (re_match): should pop non-greedy stack items on
-	  failure, after best_regs are fixed.
-
-Thu Apr  8 17:30:40 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (PACK_LENGTH_ADJUST): need to adjust for `*' length.
-
-Tue Apr  6 23:28:44 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (void_check): add void context checks.
-
-Mon Apr  5 12:23:42 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_s_at): should copy gmt-mode.
-
-	* eval.c (eval_node): preserve ruby_eval_tree.
-
-Fri Apr  2 14:00:34 1999  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
-
-	* lib/debug.rb: wrong command interpreting.
-
-Fri Apr  2 11:46:22 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.3.2
-
-Fri Apr  2 10:40:04 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_s_pipe): forgot to define IO::pipe.
-
-Thu Apr  1 14:40:46 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (assign): modified for rhs change.
-
-	* parse.y (stmt): unparenthesisized method calls can be right hand
-	  side expression of the assignment.
-
-Sat Mar 27 22:42:47 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* ext/nkf/nkf.c (rb_nkf_kconv): check size output_ctr before
-	  decrement.
-
-Thu Mar 25 09:11:03 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_s_at): preserve gmt-mode for result.
-
-	* parse.y (rb_compile_string): do not use cur_mid, use
-	  compile_for_eval instead.
-
-	* st.c (PTR_NOT_EQUAL): wrong logical condition.
-
-Wed Mar 24 13:06:43 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yycompile): should clear cur_mid after compilation.
-
-	* io.c (next_argv): need to check type for ARGV.shift.
-
-	* eval.c (blk_copy_prev): need to preserve outer scope as well as
-	  outer frames.
-
-	* parse.y (rb_compile_string): return can appear within eval().
-
-Tue Mar 23 10:15:07 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* configure.in: AC_C_CONST check added.
-
-Tue Mar 23 02:07:35 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_plus): preserve gmt-mode for result.
-
-Mon Mar 22 01:32:37 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): adjust line numbers before expression
-	  interpolation within strings.
-
-	* eval.c (rb_eval): defined? returns nil for false condition.
-
-	* numeric.c (num_nonzero_p): returns nil for false condition.
-
-Sat Mar 20 13:07:43 1999  Keiju Ishitsuka  <keiju@rational.com>
-
-	* lib/weakref.rb: avoid leak for two weakrefs for one object.
-
-Fri Mar 19 11:26:45 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* eval.c (ruby_run): needed to eval END{} on exit.
-
-	* eval.c (rb_exit): ditto.
-
-Fri Mar 19 02:17:27 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* signal.c (Init_signal): handles terminating signals HUP, TERM,
-	  QUIT, PIPE, etc.
-
-Thu Mar 18 15:47:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (rb_big_and): bug in sign calculation.
-
-	* bignum.c (rb_big_or): ditto.
-
-	* io.c (rb_f_select): forgot to use to_io to retrieve IO, after
-	  calling select(2).
-
-Tue Mar 16 19:54:31 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/extmk.rb.in: static linking cause infinite make loop.
-
-Tue Mar 16 18:50:04 1999  Yoshida Masato  <yoshidam@yoshidam.net>
-
-	* ext/socket/socket.c (tcp_s_gethostbyname): typo, not NUM2INT(),
-	  but INT2NUM().
-
-	* ext/socket/socket.c (mkhostent): ditto.
-
-Tue Mar 16 12:31:44 1999  Ryo HAYASAKA  <hayasaka@cheer.u-aizu.ac.jp>
-
-	* file.c (utime_internal): suppress warning by const.
-
-	* time.c (time_gmtime): ditto.
-
-Tue Mar 16 10:23:05 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_clone): Time object can be cloned.
-
-Tue Mar 16 03:13:10 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* ruby.c (load_file): argv[argc] should be NULL.
-
-Mon Mar 15 22:12:08 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* sprintf.c (rb_f_sprintf): typo in arg_num check at exit.
-
-Mon Mar 15 16:42:22 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_dup): dup2 should copy class too.
-
-Mon Mar 15 15:12:53 1999  Yasuhiro Fukuma  <yasuf@big.or.jp>
-
-	* lib/mkmf.rb: install program relative path check.
-
-Mon Mar 15 14:05:25 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_s_new): 2nd argument is now option.
-	  Regexp::EXTENDED can be specified.
-
-Fri Mar 12 10:47:49 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_index): str.index("") should always match at
-	  offset point.
-
-	* string.c (rb_str_upto): can specify end point exclusion.
-
-	* string.c (rb_str_index): negative offset.
-
-	* regex.c (re_match): begline should not match at the point
-	  between a newline and end-of-string.  endline neither.
-
-	* regex.c (re_compile_pattern): context_indep_anchors .
-
-	* parse.y (parse_regx): need not to push backslashes before
-	  escaped characters.
-
-	* eval.c (rb_thread_join): re-raises exception within target.
-
-Fri Mar 12 01:09:36 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* ext/readline/readline.c (readline_s_vi_editing_mode): wrong
-	  number of arguments.
-
-Fri Mar 12 02:12:50 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (PACK_ITEM_ADJUST): "a".unpack("C3") => [97, nil, nil]
-
-Thu Mar 11 18:23:50 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* ext/socket/socket.c (Init_socket): UDPsocket was omitted.
-
-Thu Mar 11 16:43:30 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (PACK_LENGTH_ADJUST): push fixed number of items per
-	  template to result array.
-
-	* pack.c (pack_unpack): I/N/C etc. push nil in the array for "".
-
-Tue Mar  9 00:19:21 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (ruby_unsetenv): use ruby_setenv(name, 0).
-
-	* hash.c (env_delete): ditto.
-
-	* string.c (rb_str_upto): do not check `beg<end' to generate
-	  strings for the pattern like "a".upto("#a").
-
-	* range.c (range_each): treat strings as special case.
-
-	* range.c (range_each): no longer use upto for generic cases.
-
-Sun Mar  7 14:21:32 1999  IKARASHI Akira  <ikarashi@itlb.te.noda.sut.ac.jp>
-
-	* string.c (rb_str_index): wrong end point calculation.
-
-Sat Mar  6 02:19:12 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (match_index): MatchingData#index(n) added.
-
-	* array.c (rb_ary_subseq): ary[n..-1] returns an sub-array unless
-	  n is too small negative index.
-
-	* re.c (rb_reg_match_method): Regexp#match(str) added.
-
-	* array.c (rb_ary_indexes): understands ranges as indexes.
-
-	* re.c (match_size): MatchingData#size added.
-
-Fri Mar  5 01:04:57 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_fill): modified for range.
-
-	* array.c (rb_ary_aset): a[n..m] revisited.
-
-Thu Mar  4 14:23:29 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_subseq): a[n..m] revisited.
-
-	* parse.y (method_call): allow Const::method{}.
-
-	* array.c (rb_ary_replace_method): should replace original array.
-
-Thu Mar  4 02:30:22 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* configure.in: remove --disable-thread, thread feature is no
-	  longer optional.
-
-Thu Mar  4 00:32:17 1999  Yasuhiro Fukuma  <yasuf@big.or.jp>
-
-	* parse.y (read_escape): wrong arguments for scan_oct,scan_hex.
-
-Wed Mar  3 11:51:53 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (Init_socket): rename class names as
-	  TCPsocket -> TCPSocket etc.
-
-Tue Mar  2 19:46:42 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* configure.in (LDSHARED): use gcc -Wl,-G for solaris with gcc.
-
-Tue Mar  2 17:04:19 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): backslashes do not concatenate comment lines
-	  anymore.
-
-Mon Mar  1 14:05:12 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_call0): adjust argv for optional arguments.  super
-	  without arguments emit superclass method with the value from
-	  optional arguments.  enabled as experiment.
-
-Sun Feb 28 14:04:07 1999  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* parse.y (nextc): backslash at the eof cause infinite loop
-
-Sun Feb 28 11:01:26 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* time.c (make_time_t): month range check added.
-
-Sat Feb 27 02:36:05 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (Init_Regexp): add escape as alias of quote.
-
-	* re.c (rb_reg_s_quote): char-code can be specified now.
-
-Fri Feb 26 18:45:36 1999  Yasuhiro Fukuma  <yasuf@big.or.jp>
-
-	* eval.c (error_print): bug for error message with newlines.
-
-Fri Feb 26 12:00:04 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (make_time_t): future check modified to allow 1969-12-31
-	  at certain timezone.
-
-	* time.c (time_arg): year >= 1000 should be past.
-
-	* version.c (Init_version): constant RELEASE_DATE added.
-
-Fri Feb 26 01:08:30 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_substr): returns nil for out-of-range access.
-
-	* array.c (rb_ary_subseq): returns nil for out-of-range access.
-
-	* array.c (rb_ary_store): negative index message has changed.
-
-	* string.c (rb_str_aset): reallocation needed.
-
-	* string.c (rb_str_aset): allow char append to the string.
-
-Thu Feb 25 23:30:17 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* time.c (time_load): tm_year should be packed in 17 bits, not 18.
-
-Thu Feb 25 12:50:25 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* missing/dup2.c: replaced by public domain version.
-
-	* time.c (make_time_t): add `future check' in loops.
-
-	* object.c (rb_num2dbl): forbid implicit conversion from nil, or
-	  strings.  thus `Time.now + str' should raise error.
-
-	* object.c (rb_Float): convert nil into 0.0.
-
-	* object.c (rb_Integer): conversion method improved.
-
-Thu Feb 25 03:27:50 1999  Shugo Maeda  <shugo@netlab.co.jp>
-
-	* eval.c (rb_call): should handle T_ICLASS properly.
-
-Thu Feb 25 00:04:00 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* error.c (Init_Exception): global function Exception() removed.
-
-	* variable.c (rb_class2name): returns "nil"/"true"/"false" for them.
-
-	* time.c (time_dump): time marshaling format compressed size from
-	  11 bytes to 8 bytes.  thanx to tadf@kt.rim.or.jp.
-
-	* eval.c (rb_obj_call_init): should specify arguments explicitly.
-
-Wed Feb 24 15:43:28 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): comment concatenation requires preceding space
-	  before backslash at the end of line.
-
-	* io.c (rb_f_pipe): global pipe is obsolete now.
-
-	* object.c (Init_Object): remove true.to_i, false.to_i.
-
-Tue Feb 23 14:21:41 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): warn if identifier! immediately followed by `='.
-
-Tue Feb 23 12:32:41 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* eval.c (rb_load): tilde expansion moved to find_file.
-
-	* eval.c (find_file): tilde expansion added.
-
-Tue Feb 23 10:50:20 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (require_method): require can handle multiple fnames.
-
-	* hash.c (rb_hash_foreach_iter): hash key may be nil.
-
-Mon Feb 22 17:44:02 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): should not pop failure point on success for
-	  non-greedy matches.
-
-	* io.c (Init_IO): remove global_functions getc, readchar, ungetc,
-	  seek, tell, rewind.
-
-Sat Feb 20 22:54:26 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (rb_num2long): no implicit conversion from boolean.
-
-Sat Feb 20 09:58:42 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* numeric.c (flo_to_s): portable Infinity and NaN support.
-
-Sat Feb 20 07:13:31 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* io.c (rb_file_sysopen): forgot to initialize a local variable.
-
-Fri Feb 19 23:05:07 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_subseq): range check changed.
-
-	* marshal.c: increment MARSHAL_MINOR for Time format change.
-
-	* time.c (time_old_load): support old marshal format.
-
-	* time.c (time_load): changed for new format Y/M/D/h/m/s/usec.
-
-	* time.c (time_dump): marshal dump format has changed.
-
-Fri Feb 19 00:25:57 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_arg): should reject "sep\0" and such.
-
-	* time.c (time_plus): Time#+ should not receive Time object
-	  operand.
-
-	* string.c (rb_str_substr): negative length raises exception now.
-
-	* array.c (beg_len): if end == -1, it points end of the array.
-
-	* array.c (rb_ary_subseq): negative length raises exception now.
-
-Thu Feb 18 20:57:04 1999  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* time.c (rb_strftime): strftime() may return 0 on success too.
-
-	* time.c (time_strftime): `\0' within format string should not be
-	  omitted in the result.
-
-	* time.c (rb_strftime): zero length format.
-
-	* time.c (time_to_a): yday start with 1 now.
-
-	* time.c (time_zone): support for long timezone name.
-
-	* time.c (time_yday): yday start with 1 now.
-
-	* time.c (time_minus): minus calculation was wrong.
-
-	* time.c (time_minus): sec, usec should be at least `long', maybe
-	  they should be `time_t'.
-
-	* time.c (time_plus): addition with float was wrong.
-
-	* time.c (time_to_s): support for long timezone name.
-
-	* time.c (time_gm_or_local): too far future check moved.
-
-	* time.c (time_arg): treat 2 digit year as 69-99 => 1969-1999,
-	  00-68 => 2000-2068
-
-Thu Feb 18 03:56:47 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* missing/fnmatch.c: moved to missing directory.
-
-Wed Feb 17 16:22:26 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* struct.c (rb_struct_alloc): actual initialization now be done in
-	  `initialize'.
-
-Wed Feb 17 09:47:15 1999  okabe katsuyuki  <hgc02147@nifty.ne.jp>
-
-	* regex.c (re_search): use mbclen() instead of ismbchar().
-
-	* re.c (rb_reg_s_quote): should handle mbchars properly.
-
-Wed Feb 17 01:25:26 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): stop comment concatenation by backslash follows
-	  after >= 0x80 char.  may cause problem with Latin chars.
-
-	* eval.c (error_print): exception in rb_obj_as_string() caused
-	  SEGV. protect it by PUSH_TAG/POP_TAG.
-
-	* error.c (exc_exception): `Exception#exception' should return self.
-
-Wed Feb 17 01:12:22 1999  Hirotaka Ichikawa  <hirotaka.ichikawa@tosmec.toshiba.co.jp>
-
-	* configure.in: BeOS patch.
-
-Tue Feb 16 14:25:00 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): should reallocate mbc space for
-	  character class unless current_mbctype is ASCII.
-
-Mon Feb 15 15:48:30 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* configure.in: specify `-Wl,-E' only for GNU ld.
-
-Mon Feb 15 11:43:22 1999  GOTO Kentaro  <gotoken@math.sci.hokudai.ac.jp>
-
-	* array.c (rb_inspecting_p): should return Qfalse.
-
-Sun Feb 14 22:36:40 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* sprintf.c (rb_f_sprintf): `%G' was omitted.
-
-Sun Feb 14 12:47:48 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* numeric.c (Init_Numeric): allow divide by zero on FreeBSD.
-
-	* numeric.c (Init_Numeric): FloatDomainError added.
-
-	* configure.in (AC_REPLACE_FUNCS): add checks for functions
-	  isinf, isnan, and finite.
-
-Sat Feb 13 01:24:16 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_create_0): should protect th->thread.
-
-Fri Feb 12 16:16:47 1999  Yasuhiro Fukuma  <yasuf@big.or.jp>
-
-	* string.c (rb_str_inspect): wrong mbc position.
-
-Fri Feb 12 16:21:17 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_fd_close):
-
-	* io.c (rb_io_fptr_close): tell scheduler that fd is closed.
-
-	* io.c (rb_io_reopen): ditto.
-
-	* io.c (READ_CHECK): check if closed after thread context switch.
-
-	* ext/socket/socket.c (bsock_close_read): do not check
-	  the return value from shutdown(2).
-
-	* ext/socket/socket.c (bsock_close_write): ditto.
-
-	* ext/socket/socket.c (sock_new): need to dup(fd) for close_read
-	  and close_write.
-
-	* parse.y (here_document): handle newlines within #{}.
-
-	* regex.h: should replace symbols for ruby.
-
-Fri Feb 12 00:46:28 1999  Shugo Maeda  <shugo@netlab.co.jp>
-
-	* marshal.c (r_object): should update the method name in message.
-
-	* marshal.c (w_object): limit should be converted into Fixnum.
-
-Wed Feb 10 15:20:03 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): empty pattern should not cause infinite
-	  pattern match loop.
-
-	* regex.c (re_compile_pattern): RE_OPTIMIZE_ANCHOR for /.*/, not
-	  for /(.|\n)/.
-
-	* numeric.c (fix_pow): `fixnum**nil' should raise TypeError.
-
-	* bignum.c (rb_big_pow): need to normalize results.
-
-Wed Feb 10 01:42:41 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* numeric.c (fix_pow): `(5**1).type' should be Integer.
-
-Tue Feb  9 01:22:49 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): do not ignore newlines in mbchars.
-
-	* io.c (rb_file_s_open): mode can be specified by flags like
-	  open(2), e.g. File::open(path, File::CREAT|File::WRONLY).
-
-	* io.c (rb_f_open): bit-wise mode flags for pipes
-
-	* io.c (Init_IO): bit flags for open.
-
-Sat Feb  6 22:56:21 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_sub_bang): should not overwrite match data by
-	  regexp match within the block.
-
-	* string.c (rb_str_gsub_bang): ditto.
-
-Sat Feb  6 03:06:17 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (match_getter): accessing $~ without matching caused SEGV.
-
-Fri Feb  5 22:11:08 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* parse.y (yylex): binary literal support, like 0b01001.
-
-	* parse.y (yylex): octal numbers can contain `_'s.
-
-	* parse.y (yylex): warns if non-octal number follows immediately
-	  after octal literal.
-
-	* parse.y (yylex): now need at least one digit after prefix such
-	  as 0x, or 0b.
-
-	* bignum.c (rb_str2inum): recognize binary numbers like 0b0101.
-
-Fri Feb  5 03:26:56 1999  Yasuhiro Fukuma  <yasuf@big.or.jp>
-
-	* ruby.c (proc_options): -e without program prints error.
-
-Fri Feb  5 00:01:50 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (terms): needed to clear heredoc_end.
-
-	* numeric.c (flo_div): allow float division by zero.
-
-Thu Feb  4 11:56:24 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* missing/strtod.c: for compatibility.
-
-	* configure.in (strtod): add strtod compatible check.
-
-	* numeric.c (rb_num2long): missing/vsnprintf.c does not support
-	  floating points.
-
-	* numeric.c (flo_to_s): ditto.
-
-Wed Feb  3 23:02:12 1999  Yoshida Masato  <yoshidam@yoshidam.net>
-
-	* regex.c (re_compile_pattern): use ismbchar() to get next char.
-
-	* regex.c (re_search): wrong mbchar shift.
-
-	* re.c (rb_reg_search): needed to reset $KCODE after match.
-
-	* regex.c (re_compile_fastmap): mbchars should match with \w.
-
-Wed Feb  3 22:35:12 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* parse.y (yylex): too big float raise warning, not error.
-
-Tue Feb  2 23:41:42 1999  Yoshida Masato  <yoshidam@yoshidam.net>
-
-	* regex.c (re_match): wrong boundary.
-
-	* regex.c (IS_A_LETTER): re_mbctab[c] may not be 1 for mbc.
-
-	* regex.c (re_search): mbchar support for shifting ranges.
-
-	* regex.c (MBC2WC): wrong conversion.
-
-Wed Feb  3 15:03:16 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (parse_regx): need to escape parens if terminators are
-	  not any kind of parenthesis.
-
-	* parse.y (parse_qstring): ditto.
-
-	* parse.y (parse_string): ditto.
-
-Tue Feb  2 17:11:26 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* string.c (rb_str_gsub_bang): too small realloc condition.
-
-Mon Feb  1 10:01:17 1999  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* parse.y (yylex): range check for the float literal.
-
-Sat Jan 30 18:34:16 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (usage): -h option to show brief command description.
-
-Sat Jan 30 08:45:16 1999  IKARASHI Akira  <ikarashi@itlb.te.noda.sut.ac.jp>
-
-	* lib/cgi-lib.rb: cookie support added.
-
-Sat Jan 30 13:38:24 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): mbchars should match with \w
-	  within character class.  Was matching with \W.
-
-	* regex.c (re_match): \w should match with multi byte characters,
-	  not its first byte.
-
-Sat Jan 30 10:06:41 1999  Yoshida Masato  <yoshidam@yoshidam.net>
-
-	* re.c (rb_reg_s_new): UTF-8 flag handle (/u, /U).
-
-	* re.c (rb_kcode): $KCODE handle for UTF-8.
-
-Sat Jan 30 01:51:16 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_delete_if): RTEST() missing.
-
-	* hash.c (delete_if_i): ditto.
-
-	* enum.c (Init_Enumerable): select (=find_all), detect (=find)
-	  added as aliases.
-
-Fri Jan 29 21:32:19 1999  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* hash.c (rb_f_setenv): SEGV caused by small typo.
-
-Fri Jan 29 00:15:58 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/parsedate.rb (parsedate): support date format like
-	  23-Feb-93, which is required by HTTP/1.1.
-
-	* variable.c (find_class_path): avoid calling rb_iv_set().
-
-	* eval.c (backtrace): do not need to modify $SAFE internally.
-
-	* variable.c (classname): inline __classid__ access.
-
-	* eval.c (THREAD_ALLOC): needed to initialize wrapper.
-
-	* lib/ftools.rb (makedirs): allows slash at the end of the path.
-
-	* numeric.c (rb_fix_induced_from): ensure result to be Fixnum.
-
-Thu Jan 28 17:31:43 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (flo_to_s): float format changed to "%16.10g".
-
-Thu Jan 28 02:13:11 1999  Yoshinori Toki  <toki@freedom.ne.jp>
-
-	* array.c (rb_ary_store): expand allocated buffer by 3/2.
-
-Wed Jan 27 17:50:02 1999  Kazuhiro HIWADA  <hiwada@kuee.kyoto-u.ac.jp>
-
-	* bignum.c (dbl2big): raised error if double is too big to cast
-	  into long.  check added.
-
-Wed Jan 27 03:16:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_mod_const_at): can't list constants of the
-	  untainted objects in safe mode.
-
-	* class.c (method_list): can't list methods of untainted objects
-	  in safe mode.
-
-Tue Jan 26 02:40:41 1999  GOTO Kentaro  <gotoken@math.sci.hokudai.ac.jp>
-
-	* prec.c: Precision support for numbers.
-
-Thu Jan 21 19:08:14 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_f_raise): calls `exception' method, not `new'.
-
-	* error.c (exc_exception): renamed from `new'.
-
-Wed Jan 20 03:39:48 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yycompile): rb_in_compile renamed to ruby_in_compile.
-
-	* ruby.c (load_file): define DATA if __END__ appeared in script.
-
-Tue Jan 19 14:57:51 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (here_document): need to protect lex_lastline.
-
-	* parse.y (yylex): disable %//, %'', %``.
-
-Tue Jan 19 05:01:16 1999  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* array.c (beg_len): round range value too much.
-
-Mon Jan 18 13:02:27 1999  Kuroda Jun  <jkuro@dwe.co.jp>
-
-	* hash.c (env_keys): strchr() may return NULL.
-
-Mon Jan 18 17:51:47 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* instruby.rb (wdir): install libruby.a in archdir.
-
-	* lib/ftools.rb (install): removes file before installing.
-
-Mon Jan 18 16:55:31 1999  MAEDA shugo  <shugo@aianet.ne.jp>
-
-	* eval.c (rb_callcc): experimental continuation support.
-
-Sun Jan 17 19:45:37 1999  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* pack.c (pack_pack): nil packing caused SEGV.
-
-Sat Jan 16 13:18:03 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_concat): character (fixnum) can be append to
-	  strings
-
-	* array.c (rb_ary_unshift): unshift returns array.
-
-Sat Jan 16 01:39:19 1999  Yoshida Masato  <yoshidam@tau.bekkoame.ne.jp>
-
-	* string.c (rb_str_split_method): UTF-8 support.
-
-	* regex.c: UTF-8 support.
-
-Thu Jan 14 00:42:55 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_gsub_bang): forget to add offset for null match.
-
-	* eval.c (rb_thread_local_aset): can't modify in tainted mode.
-
-	* hash.c (env_each_key): avoid generating temporary array.
-
-Wed Jan 13 23:58:50 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (rb_f_setenv): name and value can be tainted.
-
-Wed Jan  6 02:42:08 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (Init_Bignum): forgot to define Bignum#===.
-
-	* gc.c (gc_sweep): if add_heap() is called during GC, objects on
-	  allocated heap page(s) are not marked, should not be recycled.
-
-	* gc.c (gc_sweep): should refer latest freelist.
-
-	* gc.c (id2ref): modified to support performance patch.
-
-	* object.c (rb_obj_id): performance patch (no bignum for id).
-
-Tue Jan  5 01:56:18 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* config.guess: merge up-to-date from autoconf 2.12.
-
-	* array.c (rb_ary_join): avoid calling rb_protect_inspect() till
-	  it is really needed.
-
-	* object.c (rb_obj_inspect): show detailed information for the
-	  instance variables (infinite loop can avoid now).
-
-	* struct.c (rb_struct_inspect): avoid infinite loop.
-
-Sun Jan  3 01:37:58 1999  Takao KAWAMURA  <kawamura@ike.tottori-u.ac.jp>
-
-	* misc/ruby-mode.el (ruby-end-of-defun): moved too much.
-
-	* misc/ruby-mode.el (ruby-mode-variables): set paragraph-separator
-	  for the mode.
-
-	* misc/ruby-mode.el: proper font-lock for `def' and `nil' etc.
-
-Sat Jan  2 17:09:06 1999  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_jump_tag): new api to invoke JUMP_TAG.  tag values
-	  can be obtained from rb_eval_string_protect()/rb_load_protect().
-
-	* eval.c (rb_rescue): now catches all exceptions but SystemExit.
-
-	* eval.c (rb_eval_string_protect): eval string with protection.
-
-	* eval.c (rb_load_protect): load file with protection.
-
-	* io.c (rb_io_puts): avoid infinite loop for cyclic arrays.
-
-	* eval.c (rb_thread_local_aref): thread local hash tables.
-
-	* object.c (rb_equal): check exact equal before calling `=='.
-
-Thu Dec 31 22:28:53 1998  MAEDA shugo  <shugo@aianet.ne.jp>
-
-	* eval.c (rb_f_require): feature names should be provided with
-	  DLEXT extension.
-
-	* marshal.c (Init_marshal): need to provide `marshal.so'.
-
-Wed Dec 30 02:29:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (classname): do not call rb_ivar_set().
-
-	* eval.c (ruby_run): finalizers were called too early.
-
-Fri Dec 25 12:19:30 1998  Fukuda Masaki  <fukuda@wni.co.jp>
-
-	* gc.c (rb_gc_mark): should not return on FL_EXIVAR.
-
-Fri Dec 25 11:56:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (gc_mark): proper scanning for temporary region.
-
-	* eval.c (TMP_ALLOC): protection for C_ALLOCA was broken.
-
-Thu Dec 24 18:26:04 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* development version 1.3 released.
-
-Thu Dec 24 00:17:00 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_load): top self should be set properly.
-
-	* variable.c (classname): check __classpath__ if it is defined.
-
-	* variable.c (classname): invalid warning at -v with static linked
-	  ruby interpreter.
-
-	* eval.c (is_defined): modified for expr::Const support.
-
-	* eval.c (rb_eval): invoke method expr::Const if expr is not class
-	  nor module.
-
-	* parse.y (primary): enable expr::identifier as method
-	  invocation.
-
-Wed Dec 23 03:04:36 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): avoid too many loop pops for (?:..).
-
-Tue Dec 22 18:01:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental version 1.1d1 released.
-
-Mon Dec 21 01:33:03 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (TMP_PROTECT): add volatile to ensure GC protection.
-
-	* string.c (rb_str_gsub_bang): calculate buffer size properly.
-
-	* parse.y (lex_get_str): needed to return Qnil at EOS.
-
-	* eval.c (find_file): check policy modified, raise exception
-	  immediately for tainted load_path.
-
-	* hash.c (rb_f_setenv): do not depend on setenv() nor putenv().
-
-Thu Dec 17 06:29:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/tk/tkutil.c (tk_s_new): use rb_obj_instance_eval(), instead
-	  of rb_yield_0().
-
-	* eval.c (rb_f_require): forgot to call find_file in some cases.
-
-	* eval.c (rb_f_require): `require "feature.so"' to load dynamic
-	  libraries.  old `require "feature.o"' is still OK.
-
-	* eval.c (rb_eval): yield without value dumped core.
-
-Wed Dec 16 16:28:31 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental version 1.1d0 (pre1.2) released.
-
-Wed Dec 16 10:43:34 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): bound check before calling re_match().
-
-Tue Dec 15 13:59:01 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* error.c (exc_to_s): returns class name for unset mesg.
-
-	* error.c (exc_initialize): do not initialize @mesg by "".
-
-	* parse.y (nextc): __END__ should handle CR+LF newlines.
-
-Wed Dec  9 13:37:12 1998  MAEDA shugo  <shugo@aianet.ne.jp>
-
-	* pack.c (encodes): use buffering for B-encoding.
-
-	* pack.c (pack_pack): Q-encoding by 'M'.
-
-Tue Dec  8 14:10:00 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (generic_ivar_get): any object can have instance
-	  variables now.  great improvement.
-
-	* variable.c (rb_name_class): do not set __classpath__ by default,
-	  use __classid__ instead.
-
-Mon Dec  7 22:08:22 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.h (struct RFile): IO objects can have instance variables now.
-
-	* parse.y (primary): allows `def obj::foo; .. end'.
-
-Mon Dec  7 18:24:50 1998  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* ruby.c (set_arg0): $0 support for HP-UX.
-
-Mon Dec  7 01:30:28 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* dln.c (dln_strerror): better error messages on win32.
-
-Sat Dec  5 23:27:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (here_document): indentable here-doc delimiter by
-	  `<<-'.  Proposed by Clemens <c.hintze@gmx.net>.  Thanks.
-
-Thu Dec  3 16:50:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/extmk.rb.in (realclean): trouble on install.
-
-Sun Nov 29 22:25:39 1998  Takaaki Tateishi  <ttate@jaist.ac.jp>
-
-	* process.c (f_exec): check number of argument.
-
-Thu Nov 26 17:27:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c9 released.
-
-Wed Nov 25 13:07:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_dup): do not copy additional data (STR_NO_ORIG).
-
-	* parse.y (yycompile): reduce known memory leak (hard to remove).
-
-Wed Nov 25 03:41:21 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* st.c (st_init_table_with_size): round size up to prime number.
-
-Sat Nov 21 23:27:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (rb_hash_aset): reduce copying key strings.
-
-	* gc.c (looks_pointerp): declare as inline function if possible.
-
-	* st.c (PTR_NOT_EQUAL): compare hash values first before calling
-	  comparing function.
-
-	* st.c (ADD_DIRECT): save hash value in entries to reduce hash
-	  calculation.
-
-	* string.c (rb_str_gsub_bang): avoid rb_scan_args() to speed-up.
-
-	* string.c (rb_str_sub_bang): ditto.
-
-Sat Nov 21 18:44:06 1998  Masaki Fukushima  <fukusima@goto.info.waseda.ac.jp>
-
-	* time.c (time_s_now): had memory leak.
-
-	* ext/md5/md5init.c (md5_new): had memory leak.
-
-	* ext/md5/md5init.c (md5_clone): ditto.
-
-Fri Nov 20 23:23:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/delegate.rb: do not propagate hash and eql?.
-
-Thu Nov 19 01:40:52 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sample/ruby-mode.el (ruby-expr-beg): failed to find reserved
-	  word boundary.
-
-	* eval.c (rb_eval): avoid calling `concat' method.  calls
-	  rb_ary_concat() directly for efficiency.
-
-	* eval.c (rb_eval): actual rest arguments extended arrays too much.
-
-Wed Nov 18 14:30:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (rb_define_global_function): global functions now be
-	  module function of the Kernel.
-
-Wed Nov 18 10:48:09 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (read_all): SEGV on large files.
-
-Tue Nov 17 18:11:20 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c8 released.
-
-Tue Nov 17 16:58:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (arg): assignment to attribute name start with capital
-	  should be allowed.
-
-	* eval.c (thread_alloc): needed to mark terminated threads too.
-
-Tue Nov 17 12:33:48 1998  Motoyuki Kasahara  <m-kasahr@sra.co.jp>
-
-	* ext/extmk.rb.in (create_makefile): Set `libdir' to `@libdir@',
-	  Set `pkglibdir' to `$libdir/$(RUBY_INSTALL_NAME)'.
-
-Tue Nov 17 10:30:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c (f_sprintf): %l%%c -> %%l%c
-
-Tue Nov 17 01:08:50 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (ret_args): distinguish `a' and `*a' for the arguments
-	  of yield and return.
-
-	* eval.c (rb_eval): flip3 should work like sed.
-
-	* eval.c (rb_eval): flip{2,3} now have independent state for each
-	  scope to work fine with thread.
-
-Mon Nov 16 23:26:29 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (primary): exec else clause if no exception raised.
-
-Sun Nov 15 15:44:07 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* ext/extmk.rb.in (install): bug in target.
-
-Sat Nov 14 11:02:05 1998  Motoyuki Kasahara  <m-kasahr@sra.co.jp>
-
-	* Makefile.in (install): Give the argument `$(DESTDIR)' to
-	  `instruby.rb'.
-
-	* instruby.rb: Recognize ARG[0] as `destdir'.
-
-	* instruby.rb: Give the argument `destdir' to `extmk.rb'.
-
-	* ext/extmk.rb.in: Recognize ARG[1] as `$destdir'.
-
-	* instruby.rb: Create the installation directories (bindir, libdir,
-	  archdir, pkglibdir, archdir, and mandir) under `destdir', and
-	  install all files under there.
-
-	* ext/extmk.rb.in: Likewise.
-
-Sat Nov 14 10:56:55 1998  Motoyuki Kasahara  <m-kasahr@sra.co.jp>
-
-	* instruby.rb: Add the variable `pkglibdir'.
-
-	* instruby.rb: Set the variable `libdir' to `$(libdir)', not
-	  `$(libdir)/$(ruby_install_name)'. `libruby.so' and `libruby.so.LIB'
-	  are installed at `libdir'.
-
-	* instruby.rb: Set the variable `archdir' to `$(pkglibdir)/$(arch)'.
-
-Fri Nov 13 19:43:29 1998  KIMURA Koichi  <kbk@kt.rim.or.jp>
-
-	* missing/nt.c (SafeFree): wrong free offset.
-
-Thu Nov 12 20:11:53 1998  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* sample/ruby-mode.el: wrong highlight.
-
-	* parse.y (parse_regx): newline in regexp was ignored.
-
-Wed Nov 11 10:54:57 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (here_document): <<'FOO' should not escape anything.
-
-	* parse.y (here_document): bare << here-doc available, even though
-	  it's deprecated.
-
-	* file.c (rb_file_s_readlink): return value should be tainted.
-
-	* ext/etc/etc.c (setup_passwd): information (eg. GCOS name) should
-	  be tainted (modified at Perl Conference).
-
-Tue Nov 10 00:22:11 1998  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* configure.in: elf support for FreeBSD 3.x
-
-Tue Nov 10 00:05:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): here document available in eval.
-
-Mon Nov  9 17:55:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c7 released.
-
-Fri Nov  6 19:25:27 1998  Takao KAWAMURA  <kawamura@ike.tottori-u.ac.jp>
-
-	* sample/ruby-mode.el: font-lock patch.
-
-Thu Nov  5 15:42:22 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sample/README, lib/README: simple description for each file.
-
-Wed Nov  4 18:14:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (assign): attribute assignment should be called as public.
-
-Tue Nov  3 23:36:39 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_dump): dumps core for negative char value.
-
-	* regex.c (re_compile_pattern): out of boundary access for empty
-	  regexp.
-
-Mon Nov  2 22:54:01 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_aset): `str[str]' replaces first match.
-
-Mon Nov  2 18:24:33 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thread_create): was accessing modified status.
-
-Sun Nov  1 01:18:52 1998  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* gc.c (xrealloc): size 0 needs round up to 1.
-
-Sat Oct 31 23:18:34 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_split_method): negative LIMIT means number of
-	  split fields are unlimited, as in perl.
-
-	* string.c (rb_str_split_method): if LIMIT is unspecified,
-	  trailing null fields are stripped.
-
-Sat Oct 31 04:16:14 1998  Inaba Hiroto  <inaba@st.rim.or.jp>
-
-	* string.c (str_aref): regexp index SEGVed.
-
-Fri Oct 30 14:33:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (reg_match): returns nil for unmatch.
-
-	* dir.c (dir_entries): new method.
-
-	* eval.c (block_pass): do not push block, substitute it.
-
-Fri Oct 30 01:28:52 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* range.c (range_check): avoid <=> check for Fixnums.
-
-	* array.c (rb_ary_aset): accept negative index.
-
-Wed Oct 28 22:00:54 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): access out of boundary fixed.
-
-Wed Oct 28 11:37:42 1998  TAMITO  <tommy@valley.ne.jp>
-
-	* io.c (f_select): fd number comparison bug.
-
-Tue Oct 27 23:07:11 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sample/ruby-mode.el (ruby-parse-region): forgot to support %w()
-	  style array literal.
-
-	* eval.c (rb_eval): unused block raises warning.
-
-Mon Oct 26 09:37:53 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (dvar_asgn_push): dvar pushed too many times if
-	  variable-in-block first appear in loops.
-
-Sun Oct 25 22:59:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (set_list_bits): was using wrong offset.
-
-Thu Oct 22 00:07:11 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_obj_method): method retrieved from tainted object
-	  should be tainted too.
-
-	* eval.c (method_call): safe_level should be restored during
-	  Method#call.
-
-Wed Oct 21 14:21:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (Init_IO): new constants IO::SEEK_{SET,CUR,END}.
-
-	* io.c (rb_f_ungetc): ungetc pushes a char back into STDIN.
-
-Mon Oct 19 11:50:00 1998  Motoyuki Kasahara  <m-kasahr@sra.co.jp>
-
-	* ext/extmk.rb: Load '@top_srcdir@/lib/find.rb', not
-	  '../lib/find.rb'.
-
-	* ext/extmk.rb: Distinguish between `top_srcdir' and `topdir'.
-
-	* Makefile.in (CFLAGS): Add `-I.'.
-
-	* Makefile.in (lex.c): Give `@srcdir@/keywords' to gperf, not
-	  `keywords'.
-
-	* instruby.rb: Use `CONFIG["bindir"]', instead of `prefix + "/bin"'.
-
-	* instruby.rb: Use `CONFIG["libdir"]', instead of `prefix + "/lib"'.
-
-	* instruby.rb Use `CONFIG["mandir"]', instead of `prefix + "/man"'.
-
-	* instruby.rb (wdir): Add the variable to preserve the current
-	  working directory.
-
-	* instruby.rb: Chdir to wdir before install `config.h' and
-	  `rbconfig.rb'.
-
-Mon Oct 19 10:07:01 1998  EGUCHI Osamu  <eguchi@shizuokanet.ne.jp>
-
-	* eval.c (rb_eval): reduce recursive calls to rb_eval().
-
-Fri Oct 16 15:31:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_new_internal): timeval must be positive.
-
-Thu Oct 15 13:54:48 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (arg): local variables can be accessed within right side
-	  expression in assignment, notably in blocks.
-
-Wed Oct 14 00:18:33 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (Init_Array): Array#=== is now for equal check, not
-	  inclusion check.
-
-	* parse.y (when_args): `when a, *b' style new syntax for array
-	  expansion in `case'.
-
-Tue Oct 13 14:30:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (rb_obj_untaint): taint marks can be unset.
-
-	* eval.c (rb_eval): taint propagation for embedded strings.
-
-Mon Oct 12 13:27:15 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_call0): check stack depth more frequently.
-
-Mon Oct 12 08:08:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_p): can print even in secure mode.
-
-Sun Oct 11 22:50:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (rb_const_set): taint check for modification.
-
-	* variable.c (rb_ivar_set): taint check for modification.
-
-	* string.c (rb_str_modify): taint check for modification.
-
-	* hash.c (rb_hash_modify): taint check for modification.
-
-	* array.c (rb_ary_modify): taint check for modification.
-
-	* ruby.h (FL_TAINT): taint for all objects, not only strings.
-
-Fri Oct  9 17:01:14 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (read_all): read() returns "" at immediate EOF.
-
-	* io.c (io_read): read(nil) read all until EOF.
-
-Thu Oct  8 13:32:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_dump): marshal can dump Time object now.
-
-	* marshal.c (Init_marshal): rename marshal methods `_dump_to' to
-	  `_dump', `_load_from' to `_load'.
-
-	* parse.y (rb_intern): "+=".intern generates proper symbol.
-
-Mon Oct  5 18:31:53 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c6 released.
-
-Fri Oct  2 14:22:33 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): `/\s*(--)$/ =~ "- --"' did not match,
-	  because of wrong optimize condition.
-
-Mon Oct  1 01:55:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (rb_intern): should not raise exceptions.
-
-	* parse.y (yylex): symbol like `:foo?=' should not be allowed.
-
-	* ext/extmk.rb.in: makes *.a for static link modules.
-
-Wed Sep 30 14:13:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_start): supports making a subclass of the
-	  Thread class.
-
-Tue Sep 29 17:46:01 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_thread_join): join is now an instance method.
-
-Fri Sep 25 12:01:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): `@foo!' should be an error.
-
-Thu Sep 24 14:55:06 1998  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* ext/etc/etc.c (Init_etc): wrong field definition.
-
-Thu Sep 17 17:09:05 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_reopen): was creating FILE* for wrong fd.
-
-Tue Sep 15 05:28:11 1998  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* regex.c (re_compile_pattern): forgot to fixup for the pattern
-	  like (?=(A)|(B)).
-
-Tue Sep 15 01:06:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (rb_io_gets_internal): do not set $_ by default, only
-	  gets/readline set the variable.
-
-	* eval.c (rb_f_load): load toplevel class is set to anonymous
-	  module if safe_level >= 5, to encapsulate modification.
-
-	* eval.c (rb_f_load): set frame properly.
-
-	* string.c (rb_str_each_line): do not set $_.
-
-Mon Sep 14 14:42:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): beginning and end of the string, do not
-	  automatically match `\b'.
-
-	* string.c (scan_once): consume at least on character.
-
-	* regex.c (re_search): wrong behavior for negative range.
-
-Sat Sep 12 21:21:26 1998  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* regex.c (re_search): range value should be maintained.
-
-Thu Sep 10 10:55:00 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (backref_error): yyerror does not understand formats.
-
-Tue Sep  8 18:05:33 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c5 released.
-
-Tue Sep  8 10:03:39 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_each_line): wrong line splitting with newline at
-	  top of the string.
-
-	* string.c: non bang methods return copied string.
-
-	* eval.c (f_END): needed to initialize frame->argc;
-
-Fri Sep  4 11:27:40 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (bigadd): proper sign combination.
-
-	* regex.c (re_search): wrong return value for \A.
-
-Thu Sep  3 14:08:14 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c4 released.
-
-Tue Sep  1 10:47:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (slow_search): do not compare llen and blen.  llen may
-	  be longer than blen, if little contains 0xff.
-
-	* regex.c (mbctab_euc): set 0x8e as multibyte character.
-
-	* string.c (str_inspect): mask character for octal output.
-
-Mon Aug 31 15:32:41 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): use calculated offset if exactn is the
-	  first opcode in the compiled regexp.
-
-	* regex.c (bm_search): use Boyer-Moore search for simple search.
-
-	* regex.c (must_instr): wrong length check if pattern includes
-	  byte escape by 0xff.
-
-	* regex.c (re_compile_pattern): need not to check current_mbctype.
-
-Sat Aug 29 16:31:40 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_check_safe_str): avoid calling rb_id2name() in normal
-	  cases to speed-up.
-
-	* eval.c (thread_raise): do not save context of terminated thread.
-
-	* regex.c (re_compile_pattern): mask \nnn over 256.
-
-Sat Aug 29 02:09:46 1998  Koji Arai  <JCA02266@nifty.ne.jp>
-
-	* sprintf.c (f_sprintf): wrong buffer size check.
-
-Fri Aug 28 01:57:04 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): accepts (?ix-ix) and (?ix-ix:...).
-
-Fri Aug 28 12:25:33 1998  Hiroshi Igarashi  <igarashi@ueda.info.waseda.ac.jp>
-
-	* ruby.c (ruby_require_modules): load modules in appearing order.
-
-Fri Aug 28 01:57:04 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): accepts (?ix-ix) and (?ix-ix:...).
-
-Thu Aug 27 12:54:28 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c3 released.
-
-Wed Aug 26 14:40:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): check whether ruby_class is properly set,
-	  before accessing it.
-
-	* eval.c (rb_obj_instance_eval): ruby_class should be Qnil for
-	  special objects like Fixnums.
-
-	* ext/tkutil/tkutil.c (Init_tkutil): removes calls to
-	  rb_yield_0().  used instance_eval() instead in the tk.rb.
-
-Wed Aug 26 11:47:00 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): pop non-greedy stack elements on success.
-
-Wed Aug 26 09:25:35 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ruby.h: add #define environ for cygwin32.
-
-Tue Aug 25 08:57:41 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (rb_ary_sort_bang): temporarily freeze sorting array.
-
-Mon Aug 24 18:46:44 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* dln.c (dln_find_1): path check was too strict.
-
-Mon Aug 24 15:28:11 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* parse.y (f_arglist): opt_nl added after f_args.
-
-Fri Aug 21 01:06:01 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c: grand renaming on socket.c.
-
-	* ext/socket/socket.c (inet_aton): supply inet_aton for those
-	  systems that do not have it.
-
-	* ext/socket/socket.c (setipaddr): use inet_aton instead of
-	  inet_addr.
-
-	* ext/socket/socket.c (tcp_s_gethostbyname): new method: works
-	  like Socket.gethostbyname but returning array contains ip-addrs
-	  as octet decimal string format like "127.0.0.1".
-
-	* ext/socket/socket.c (mkhostent): return format changed to
-	  [host, aliases, type, ipaddr..]  as documented.
-
-Wed Aug 19 00:31:09 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_ctl): forgot to place TRAP_END at right position.
-
-Fri Aug 14 11:01:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (call_trace_func): save __FILE__, __LINE__ before
-	  executing trace_func, since trace function should not corrupt
-	  line number information.
-
-Thu Aug 13 15:09:02 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (ary_s_new): was marking unallocated region on GC.
-
-Tue Aug 11 11:57:35 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c2 released.
-
-Mon Aug 10 14:05:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* process.c (f_system): removed fflush(stdin).
-
-Fri Aug  7 17:44:44 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* error.c (err_snprintf): replace sprintf for fixed sized buffer,
-	  with snprintf to avoid buffer over-run.  For systems which does
-	  dot provide snprintf, missing/snprintf.c added.
-
-Wed Aug  5 00:47:35 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (rb_reg_search): recycle match object.
-
-Mon Aug  3 09:17:55 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (rb_str_gsub_bang): do not allocate temporary string.
-
-	* string.c (rb_str_sub_bang): use inline replace.
-
-Wed Jul 29 00:36:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (hash_s_new): the default value can be specified.
-
-	* hash.c (hash_default): method to set the default value.
-
-	* hash.c (hash_aref): now returns the default value.
-
-Tue Jul 28 13:03:25 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (ary_s_new): argument to specify initial value is added.
-
-	* array.c (ary_s_new): specifies size, not capacity.
-
-Mon Jul 27 12:39:34 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_replace): zero fill for expansion gap.
-
-	* regex.c (mbctab_euc): set flags on for 0xA1-0xFE.  suggested by
-	  <inaba@st.rim.or.jp>.
-
-	* string.c (str_inspect): consider current_mbctype.
-
-Sun Jul 26 15:37:11 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* array.c (ary_s_new): Array.new(1<<30) dumps core.
-
-Fri Jul 24 13:40:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c1 released.
-
-Fri Jul 24 02:10:22 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (r_bytes2): allocated buffer size was too short.
-
-	* marshal.c (w_object): saves all options, not only casefold flag.
-
-	* re.c (reg_clone): now copies options properly.
-
-	* re.c (reg_get_kcode): code number was wrong.
-
-Thu Jul 23 13:11:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_attr): argument should be symbol or string.
-
-Wed Jul 22 11:59:34 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (calculate_must_string): wrong offset added.
-
-Wed Jul 22 11:59:59 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* st.c (rehash): still had a GC problem.  fixed.
-
-Tue Jul 21 13:19:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (gc_mark_threads): crashed on GC before thread allocation.
-
-	* st.c (rehash): GC during rehash caused SEGV.
-
-Tue Jul 21 01:25:10 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c (f_sprintf): integer formatter totally re-written.
-
-	* sprintf.c (remove_sign_bits): support uppercase hexadecimal.
-
-Sat Jul 18 00:14:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c (f_sprintf): proper sign position for %X and %O.
-
-Fri Jul 17 14:10:20 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1c0 released.
-
-Fri Jul 17 08:01:49 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* process.c (f_exec): Check_SafeStr() added.
-
-	* process.c (f_system): Check_SafeStr() moved before fork().
-
-Thu Jul 16 22:58:48 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (scan_once): substrings to the block should not be
-	  tainted.  use reg_nth_match(), not str_substr().
-
-	* string.c (str_substr): needed to transfer taint.
-
-Thu Jul 16 16:15:57 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* gc.c (xmalloc): object allocation count added to GC trigger.
-
-	* eval.c (thread_save_context): avoid marking uninitialized stack
-	  in thread_mark.  GC may be triggered by REALLOC_N().
-
-Wed Jul 15 15:11:57 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_31.
-
-Wed Jul 15 15:05:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thread_create): exit() and abort() in threads now
-	  forwarded to main_thread.
-
-Tue Jul 14 14:03:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (obj_instance_variables): list names that is not
-	  instance variables.
-
-	* gc.c (GC_MALLOC_LIMIT): choose smaller limit value.
-
-Mon Jul 13 12:39:38 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (str2cstr): should not return NULL.
-
-Fri Jul 10 11:51:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (gettable): needed to add dyna_in_block() check.
-
-Thu Jul  9 17:38:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_30.
-
-Thu Jul  9 16:01:48 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sprintf.c (fmt_setup): format specifier for long needed.
-
-	* sprintf.c (f_sprintf): ditto.
-
-	* numeric.c (fix2str): ditto.
-
-	* eval.c (thread_create): no more ITIMER_REAL.
-
-	* eval.c (thread_create): thread finalization needed before
-	  aborting thread if thread_abort is set.
-
-Wed Jul  8 18:17:33 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (big_pow): abandon power by bignum (too big).
-
-Tue Jul  7 13:58:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_catch): add C level catch/throw feature.
-
-Mon Jul  6 15:18:09 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (arg): proper return values for `||=' and `&&='.
-
-Fri Jul  3 16:05:11 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_29.
-
-Fri Jul  3 11:20:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (r_byte): byte should not extend sign bit.
-
-	* numeric.c (fix_mul): use FIX2LONG() instead of FIX2INT() for
-	  64bit architectures.
-
-	* marshal.c (r_bytes): remove weird casting between pointer and int.
-
-	* process.c (proc_setsid): new method Process#setsid().
-
-Thu Jul  2 12:49:21 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* marshal.c (w_object): remove `write_bignum' label for 64bit
-	  architectures.
-
-	* marshal.c (r_bytes): needs int, not long.
-
-Wed Jul  1 14:21:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (flo_plus): should not allow addition with strings.
-
-Wed Jul  1 13:09:01 1998  Keiju ISHITSUKA  <keiju@rational.com>
-
-	* numeric.c (num_uminus): wrong coerce direction.
-
-Tue Jun 30 10:13:44 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (f_p): accepts arbitrary number of arguments.
-
-	* eval.c (rb_yield_0): there's some case that iterator_p() returns
-	  true even if the_block was not set.  check added.
-
-Tue Jun 30 01:05:20 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (BEGIN_CALLARGS): adjust the_block before evaluating the
-	  receiver's value and the arguments.
-
-Fri Jun 26 18:02:50 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_28.
-
-Fri Jun 26 11:01:26 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* string.c (str_aset_method): needed to convert to string.
-
-Thu Jun 25 02:05:50 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): optimize for `.*' at beginning of the
-	  pattern.
-
-	* regex.c (re_search): optimize for character class repeat at
-	  beginning of the pattern.
-
-	* regex.c (re_compile_pattern): detect optimization potential for
-	  the compiled patterns.
-
-Thu Jun 25 00:02:26 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* re.c (reg_s_new): flag value was wrong.
-
-Wed Jun 24 23:45:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_search): wrong anchor handling for reverse search.
-
-Wed Jun 24 02:18:57 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (mlhs): `((a,b)),c = [[1,2]],3' assigns a=1,b=2,c=3.
-
-Tue Jun 23 11:46:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): `&&=' and `||=' added.
-
-Sat Jun 20 02:53:50 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (assignable): nesting local variables should have higher
-	  priority than normal local variables for assignment too.
-
-Fri Jun 19 18:28:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_27.
-
-Fri Jun 19 14:34:49 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (assign): support hack for nested multiple assignment.
-
-	* parse.y (mlhs): nested multiple assignment.
-
-	* eval.c (rb_eval): in-block variables now honors static scope.
-
-	* configure.in: RSHIFT check moved to configure.
-
-Thu Jun 18 16:46:04 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_26.
-
-Thu Jun 18 13:37:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (file_s_ftype): uses lstat(2) instead of stat(2).
-
-	* dir.c (dir_s_glob): there can be buffer overrun, check added.
-
-	* eval.c (f_binding): handles in-block variables declared after
-	  binding's generation.
-
-	* numeric.c (flo_floor): floor, ceil, round added to Float.
-
-Wed Jun 17 11:20:00 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (gettable): nesting local variables should have higher
-	  priority than normal local variables.
-
-Tue Jun 16 12:30:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (str2inum): handles `+ddd'.
-
-	* struct.c (make_struct): name parameter can be nil for unnamed
-	  structures.
-
-Mon Jun 15 16:30:10 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (class_s_inherited): prohibiting to make subclass of
-	  class Class.
-
-	* object.c (module_s_new): support for making subclass of Module.
-
-	* parse.y (yycompile): clear eval_tree before compiling.
-
-Fri Jun 12 17:58:18 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (eval): write back the_dyna_var into the block.
-
-Thu Jun 11 18:19:18 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_25.
-
-	* eval.c (dvar_add_compiling): register dyna_var at compile time.
-
-	* regex.c (re_compile_pattern): RE_DUP_MAX iteration is too big.
-
-Wed Jun 10 15:12:04 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_eof): do not block other threads.
-
-	* signal.c (trap): reserve SIGALRM for thread.
-
-	* eval.c (thread_create): use ITIMER_REAL also to avoid system
-	  call blocking.
-
-	* io.c (f_syscall): add TRAP_BEG, TRAP_END around system calls.
-
-	* io.c (io_ctl): add TRAP_BEG, TRAP_END around system calls.
-
-	* enum.c (enum_collect): did not collect false values.
-
-	* array.c (ary_new2): forgot to initialize capa field.
-
-Tue Jun  9 18:36:15 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* string.c (str_split_method): split dumped core for "\xff".
-
-Tue Jun  9 16:22:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_24.
-
-Tue Jun  9 16:04:07 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/kconv/kconv.c (kconv_guess): more precise decision for EUC,
-	  using jless algorithm (3 sequential EUC hiragana characters).
-
-Tue Jun  9 15:12:44 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/kconv/kconv.c (kconv_guess): wrong guess for EUC as SJIS in
-	  some cases (0xe0 - 0xef).
-
-	* gc.c (xmalloc): insert size check for big (negative in signed)
-	  allocation size.
-
-Tue Jun  9 02:54:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/parsedate.rb: wday moved to the last in the return values.
-
-Mon Jun  8 10:40:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_split_method): split dumped core for "\0".
-
-Sat Jun  6 22:50:52 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (calculate_must_string): wrong condition for
-	  {start,stop}_nowidth.
-
-	* regex.c (re_match): various features imported from GNU regex.c
-	  0.12, such as nested grouping, avoiding infinite loop with empty
-	  match, etc.
-
-	* regex.c (register_info_type): now use union.
-
-	* regex.c (re_search): more precise anchor(^) check.
-
-Wed Jun  3 18:07:54 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (reg_raise): check rb_in_compile, not rb_in_eval.
-
-Mon Jun  1 05:26:06 1998  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* string.c (trnext): casting to signed char* needed.
-
-Tue Jun  2 16:00:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c (udp_addrsetup): error check enhanced.
-
-	* ext/socket/socket.c (sock_s_getservbyaname): use strtoul(), if
-	  possible.
-
-Sat May 30 07:10:02 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (reg_prepare_re): no more needless regular expression
-	  recompile on casefold conditions.
-
-Thu May 28 18:02:55 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (nil_plus): no more `+' method for nil.
-
-Wed May 27 17:33:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (hash_fetch): new method.
-
-	* regex.c (re_search): check whether translate table is set.
-
-Tue May 26 11:39:50 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_23.
-
-	* parse.y (yylex): no UPLUS/UMINUS for 1st argument if
-	  parenthesises are omitted.
-
-Tue May 26 01:09:55 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): (?XI) for turns off the
-	  corresponding option.
-
-Mon May 25 12:38:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): inline i option (?i).
-
-	* regex.c (re_compile_pattern): inline x option (?x).
-
-	* regex.c (re_compile_pattern): x option for regexp.
-
-	* dir.c (dir_s_open): returns block's evaluated value.
-
-	* io.c (f_open): returns block's evaluated value.
-
-	* ext/curses/curses.c (curses_addstr): nil argument caused SEGV.
-
-Fri May 22 11:52:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): push mark on (?:), so that
-	  laststart check for {a,b} can be done.
-
-Thu May 21 17:31:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_match): wrong match (too non-greedy) for `{a,b}?'.
-
-	* io.c (io_lineno): new method IO#lineno, IO#lineno=.
-
-Wed May 20 06:04:43 1998  MAEDA shugo  <shugo@aianet.ne.jp>
-
-	* BeOS patch.
-
-Wed May 20 16:32:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (BIGDN): use RSHIFT(), instead of mere `>>'.
-
-Tue May 19 16:36:26 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_22.
-
-Tue May 19 16:31:57 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (assignable): specification changed for in-block
-	  variable definition.
-
-	* eval.c (dyna_var_asgn): error in in-block variables' compile
-	  time definition.
-
-	* parse.y (str_extend): wrong nesting detection.
-
-Tue May 19 09:47:55 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* numeric.c (num2int): re-defined (extensions may use this).
-
-Mon May 18 16:40:50 1998  MAEDA shugo  <shugo@aianet.ne.jp>
-
-	* error.c (get_syserr): BeOS support.
-
-	* configure.in: modified for BeOS.
-
-	* string.c (str_dump): do not call isascii().
-
-	* sprintf.c (remove_sign_bits): forgot to initialize end pointer.
-
-	* glob.c: #include <alloca.h> added.
-
-Mon May 18 14:52:21 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_21.
-
-Mon May 18 03:27:57 1998  MAEDA shugo  <shugo@aianet.ne.jp>
-
-	* file.c (file_s_expand_path): optional second argument
-	  `default_directory' added.
-
-Sat May 16 22:06:52 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* error.c (RAISE_ERROR): wrong error message
-
-Fri May 15 14:43:25 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_20.
-
-Thu May 14 14:44:21 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* sun4 cc patches for intern.h and regex.h.
-
-Thu May 14 14:03:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* random.c (RANDOM_MAX): guessing proper maximum value for random
-	  numbers.
-
-	* random.c (f_rand): use drand48 if possible.
-
-Wed May 13 19:05:20 1998  MAEDA shugo  <shugo@aianet.ne.jp>
-
-	* BeOS patches for io.c, error.c and config.guess.
-
-Wed May 13 14:56:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_19.
-
-	* most of the Mac and BeOS patches merged, except path separators.
-
-	* error.c (err_append): generated SyntaxError was String.
-
-	* ruby.h: xxx2INT, xxx2UINT checks values as int, not long.
-
-	* ruby.h: remove typedef's. INT, UINT, UCHAR, USHORT.
-
-Tue May 12 17:38:00 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_18.
-
-Tue May 12 11:38:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* error.c (syserr_errno): returns errno of the SystemCallError.
-
-	* error.c (rb_sys_fail): saves errno in the Exception.
-
-	* error.c (set_syserr): no need to protect syserr_list.
-
-	* error.c (rb_sys_fail): no more bufsize limit.
-
-	* error.c (set_syserr): integer value of errno can be accessed by
-	  Errno::EXXX::Errno.
-
-Sun May 10 03:10:33 1998  WATANABE Tetsuya  <tetsu@jpn.hp.com>
-
-	* io.c (io_tell etc.): moved from File class to IO class.
-
-Fri May  8 12:26:37 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (pack_unpack): should be unsigned int (was signed int).
-
-Thu May  7 16:34:10 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* pack.c (pack_pack): `V', `N' uses newly created NUM2UINT().
-
-	* ruby.h (NUM2UINT): new macro.
-
-	* bignum.c (big2uint): try to convert bignum into UINT.
-
-	* re.c (reg_match): needed to return false for match with nil.
-
-	* gc.c (obj_free): wrong condition to free string.
-
-Wed May  6 21:08:08 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ruby.c (ruby_process_options): modified for DJGPP.
-
-Wed May  6 15:48:03 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_17.
-
-Wed May  6 01:37:39 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c: remove global variable `errat'.
-
-	* eval.c (rb_longjmp): embed error position information in the
-	  exception object.
-
-Sat May  2 12:20:02 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (reg_search): supports reverse search.
-
-	* string.c (str_index_method): does update $~ etc.
-
-	* eval.c (f_load): needed to clear the_dyna_vars.
-
-	* eval.c (dyna_var_asgn): do not push dyna_var, which is id == 0.
-
-	* error.c (Init_Exception): NotImplementError is no longer
-	  StandardError, which is not handled by default rescue.
-
-Fri May  1 00:35:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (proc_options): `-d' turns on verbose flag too.
-
-	* error.c (exception): last argument may be the superclass of the
-	  defining exception(s).
-
-	* io.c (Init_IO): EOFError is now subclass of the IOError.
-
-	* io.c (Init_IO): forgot to define IOError.
-
-	* error.c (Init_Exception): old Exception class renamed to
-	  StandardError.  Exception now replaces old GlobalExit.
-
-	* error.c (Init_Exception): Exception is now the root of the
-	  Global Exits.  There's no longer GlobalExit class.
-
-	* util.c (ruby_mktemp): check TMP, TMPDIR first.
-
-Thu Apr 30 01:08:35 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/tk.rb: call 'unknown', if proc not defined.
-
-	* eval.c (handle_rescue): default rescue handles `Exceptional' not
-	  only the instance of the `Exception's.
-
-	* eval.c (f_raise): exception can be any object.
-
-	* time.c (time_gm_or_local): call time_gmtime or time_localtime.
-
-	* eval.c (f_raise): raises TypeError if the class which is not a
-	  subclass of String is specified (checked in exc_new()).
-
-	* error.c (exc_new): need to check whether invalid class (not a
-	  subclass of String) is specified.
-
-Wed Apr 29 21:05:44 1998  WATANABE Hirofumi  <eban@os.rim.or.jp>
-
-	* ruby.c (proc_options): option '-e' via tempfile.
-
-Tue Apr 28 15:27:58 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_16.
-
-Tue Apr 28 00:07:38 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (obj_is_proc): type check predicate.
-
-	* eval.c (obj_is_block): ditto.
-
-Mon Apr 27 16:59:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/gtk/gtk.c (Init_gtk): use timeout, not idle to avoid
-	  consuming CPU too much.
-
-	* lib/tk.rb: use tcltklib#_invoke instead of `_eval'.
-
-Mon Apr 27 16:59:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (ary_sort): use dup, not clone.
-
-Mon Apr 27 13:46:27 1998  Tadahiro Maebashi  <maebashi@iij.ad.jp>
-
-	* ext/tcltklib/tcltklib.c (ip_invoke): invoke tcl command
-	  directly.  need not worry about escaping tcl characters.
-
-Mon Apr 27 12:04:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* random.c (f_rand): do not call srand() implicitly.
-
-Fri Apr 24 14:35:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_15.
-
-	* parse.y (assignable): dyna_var_asgn actually defines nested
-	  local variables in outer context.
-
-	* random.c (f_rand): call srand(), if it has not called yet.
-
-	* random.c (f_srand): use tv_usec as the default seed.
-
-	* eval.c (rb_eval): values of nested local variables should be
-	  independent.
-
-	* eval.c (rb_yield_0): local variables wrong nested conditions.
-
-Wed Apr 22 23:27:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (select_get_io): get IO object by `to_io'.
-
-	* io.c (io_to_io): method to retrieve IO object, from delegating
-	  object for example.
-
-Wed Apr 22 16:52:37 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_14.
-
-	* string.c (str_modify): check for embedded pointer reference.
-
-	* gc.c (obj_free): ditto.
-
-	* pack.c (pack_pack): p/P template to embed pointers.
-
-Wed Apr 22 00:07:10 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* array.c (ary_rindex): embarrassing typo.
-
-Tue Apr 21 12:31:48 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_13.
-
-	* configure.in (RUBY_LIB): supports --program-{prefix,suffix}.
-
-	* array.c (ary_rindex): new method.
-
-	* io.c (io_binmode): should return self.
-
-Tue Apr 21 08:23:04 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* parse.y (here_document): calling parse_string with wrong
-	  arguments.
-
-	* struct.c (struct_aset): problem member assignment with name.
-
-Mon Apr 20 14:47:49 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_12.
-
-	* time.c (time_arg): args may be string (support for reduced
-	  implicit type conversion).
-
-	* lib/base64.rb: changed to use pack/unpack with `m' template.
-
-Mon Apr 20 06:23:20 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (mod_remove_const): new method.
-
-Sat Apr 18 03:53:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (hash_each_with_index): removed.  use Enumerable's
-	  each_with_index instead.
-
-	* class.c (rb_include_module): check for super modules, since
-	  module's included modules may be changed.
-
-Fri Apr 17 21:50:47 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* marshal.c (r_long): r_byte() may return signed byte.
-
-Fri Apr 17 11:58:30 1998  NAGAI Hidetoshi  <nagai@dumbo.ai.kyutech.ac.jp>
-
-	* ext/tcltklib/tcltklib.c (lib_mainloop): thread and interrupt check.
-
-Fri Apr 17 11:06:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (find_file): try to fopen() to check whether file exists.
-
-	* ruby.c (load_file): ditto.
-
-	* struct.c (struct_aset): struct member can be set by member name.
-
-Fri Apr 17 00:47:19 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/extmk.rb.in: added m68k-human support
-
-	* file.c (LOCK_SH): defines moved.
-
-	* array.c (ary_flatten_bang): simplified loop.
-
-Thu Apr 16 16:52:01 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_11.
-
-	* lib/tk.rb: thread support (experimental - maybe slow).
-
-	* eval.c (rb_longjmp): trace event on exception in raising
-	  context, just before raising exception.
-
-	* struct.c (struct_s_members): forgot to check singletons.
-
-	* struct.c (struct_aref): members can be accessed by names too.
-
-	* array.c (ary_flatten): new method.
-
-	* eval.c (rb_longjmp): prints exception information with `-d'.
-
-	* object.c (any_to_s): remove class name restriction.
-
-Thu Apr 16 01:38:02 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (thread_flock): do not block other threads.
-
-	* eval.c (thread_trap_eval): signals are now delivered to the
-	  current thread again.  In case that the current thread is dead,
-	  signals are forwarded to the main thread.
-
-	* string.c (str_new4): need not to duplicate frozen strings.
-
-Wed Apr 15 08:33:47 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* struct.c (struct_inspect): remove restriction for struct names.
-
-Wed Apr 15 02:55:02 1998  Kazuya 'Sharl' Masuda  <sharl@www.ufo.co.jp>
-
-	* x68 patches to config.sub, ext/extmk.rb.in
-
-Wed Apr 15 01:22:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_dup_frozen): do not duplicate frozen strings.
-
-	* parse.y (yylex): allow nested parenthesises.
-
-	* io.c (obj_displayln): prints newline after `display'ing the
-	  receiver.
-
-	* io.c (io_puts): avoid generating "\n" each time.  use RS_default
-	  instead.
-
-	* io.c (f_p): ditto.
-
-Tue Apr 14 22:18:17 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* struct.c (struct_aref): should not subtract negative index.
-
-Tue Apr 14 11:34:50 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_10.
-
-	* parse.y: token names prefixed by `t'.
-
-	* struct.c (struct_s_def): supports subclassing of Struct.
-
-	* io.c (io_s_new): supports subclassing of IO.
-
-Mon Apr 13 11:07:39 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (f_binding): need to restore method name.
-
-	* eval.c (rb_call0): raises SystemStackError, not Fatal.
-
-	* io.c (obj_display): same as `print self'.
-
-	* io.c (f_p): can now be called in the method form.
-
-	* re.c (reg_regsub): needed to be mbchar aware.
-
-Mon Apr 13 13:18:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thread_trap_eval): all signals delivered to main_thread.
-
-Mon Apr 13 12:47:03 1998  TAKAHASHI Masayoshi  <maki@inac.co.jp>
-
-	* re.c (kcode_set_option): did not set SJIS on SJIS condition.
-
-Sun Apr 12 22:14:07 1998  Kazunori NISHI  <kazunori@swlab.csce.kyushu-u.ac.jp>
-
-	* array.c (ary_uniq_bang): should be `==', not `='. embarrassing.
-
-Sat Apr 11 02:13:30 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (ary_subseq): SEGVed for `[][1,1]'.
-
-Fri Apr 10 21:29:06 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* array.c (ary_subseq): add check for beg larger than array length.
-
-Wed Apr  8 17:24:11 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* dir.c (dir_s_open): can be called with block (like IO#open).
-
-	* dir.c (dir_s_chdir): print directory path on error.
-
-	* dir.c (dir_s_chroot): ditto
-
-	* dir.c (Init_Dir): needed to override `new'.
-
-Thu Apr  9 18:24:58 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_09.
-
-	* string.c (str_cmp): do not depend on sentinel at the end of the
-	  strings.
-
-	* string.c (str_chomp_bang): forgot to set the sentinel.
-
-Wed Apr  8 00:59:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* bignum.c (big2int): converted int may be too big to fit in
-	  signed int.
-
-	* parse.y (arg): `foo += 1' should not cause an error.
-
-	* variable.c (rb_const_defined): returned false even if the
-	  constant is defined at the top level.
-
-	* eval.c (f_local_variables): dyna_var->id may be null.  should
-	  have checked before calling str_new2().
-
-Tue Apr  7 01:15:15 1998  Kaneko Naoshi  <wbs01621@mail.wbs.or.jp>
-
-	* re.c (reg_regsub): need to check string boundary.
-
-Tue Apr  7 19:19:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_cmp): returns either 1, 0, -1.
-
-	* array.c (ary_cmp): should check array length, too
-
-Tue Apr  7 18:50:16 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_08.
-
-Tue Apr  7 18:31:27 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* instruby.rb (mandir): dll installation for cygwin32
-
-Tue Apr  7 01:16:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* config.sub (maybe_os): TOWNS support?
-
-	* config.guess: too strict check for libc versions on linuxes.
-
-	* experimental release 1.1b9_07.
-
-	* array.c (ary_cmp): compare each element using `<=>'.
-
-	* hash.c (hash_each_with_index): yields [value, key] pair.
-
-	* class.c (class_protected_instance_methods): list protected
-	  method names.
-
-	* class.c (ins_methods_i): exclude protected methods.
-
-	* eval.c (PUSH_BLOCK): dynamic variables can be accessed from
-	  eval() with bindings.
-
-Mon Apr  6 14:49:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thread_yield): must return evaluated value.
-
-Fri Apr  3 13:07:29 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thread_schedule): context switch bypassed on wrong
-	  conditions.
-
-	* variable.c (rb_name_class): set classname by id before String
-	  class is initialized (1.0 behavior restored).
-
-Fri Apr  3 11:25:45 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (num2int): no implicit conversion from string.
-
-	* numeric.c (num2int): check whether `to_i' returns an Integer.
-
-	* numeric.c (num_zero_p): new method.
-
-	* numeric.c (num_nonzero_p): new method.  returns the receiver if
-	  it's not zero.
-
-	* eval.c (obj_instance_eval): the_class should be the object's
-	  singleton class.
-
-	* error.c (exc_s_new): message is converted into a string.
-
-Thu Apr  2 18:31:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (obj_call_init): every object call `initialize'.
-
-Wed Apr  1 08:51:53 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* parse.y (stmt): UNTIL_MOD should be for stmt, not only for expr.
-
-Wed Apr  1 01:20:31 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (true_and): boolean operators &, | and ^.
-
-Tue Mar 31 13:23:58 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (ary_compact_bang): returns nil, if it does not modify
-	  the array like String's bang methods.
-
-	* array.c (ary_uniq_bang): new method to remove duplicate items.
-
-	* eval.c (bind_s_new): new method.
-
-	* numeric.c (num2int): raise exception if Fixnums too big to
-	  convert into `int' in case that sizeof(int) < sizeof(INT).
-
-	* string.c (str_center): SEGV on negative width.
-
-	* eval.c (eval): forgot to set sourcefile.
-
-Mon Mar 30 11:12:29 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (f_test): raises exception for unknown command.
-
-	* eval.c (Init_eval): `class_eval': alias to the module_eval.
-
-Mon Mar 30 18:50:42 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* string.c (str_capitalize_bang): did not check string modification.
-
-	* string.c (str_delete_bang): wrong conversion.
-
-	* string.c (str_intern): typo in error message.
-
-Mon Mar 30 01:44:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (obj_instance_eval): accepts block as evaluation body.
-	  No compilation needed each time.
-
-	* eval.c (mod_module_eval): ditto
-
-	* file.c (file_s_umask): umask did not return old values, if no
-	  argument given.
-
-Sun Mar 29 00:54:23 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (f_throw): nil returned always.
-
-Sat Mar 28 20:40:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_06.
-
-Sat Mar 28 16:07:11 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* io.c (io_closed): should not cause exception for closed IO.
-
-	* string.c (str_tr): returned nil for success.
-
-Sat Mar 28 00:47:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (f_local_variables): new method to return an array of
-	  local variable names.
-
-	* variable.c (obj_instance_variables): now returns an array of
-	  variable names, as described in the reference.
-
-	* eval.c (rb_attr): honors default method visibility of the
-	  current scope.
-
-Fri Mar 27 13:49:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_05.
-
-	* ruby.c (ruby_prog_init): `site_ruby' added to load_path.
-
-	* ruby.c (ruby_prog_init): load-path order changed.  Paths in
-	  the RUBYLIB environment variable comes first in non-tainted
-	  mode.
-
-Thu Mar 26 11:51:09 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_call): new feature: `protected' methods.
-
-	* string.c (str_dump): new method.
-
-	* eval.c (block_pass): block argument can be nil, which means no
-	  block is supplied for the method.
-
-Wed Mar 25 21:20:13 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* string.c (str_reverse_bang): string copied to wrong place.
-
-Wed Mar 25 08:12:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (flo_modulo): caused SEGV if left operand is not a
-	  float value.
-
-	* eval.c (f_eval): optional third and fourth argument to specify
-	  file-name and line-number.
-
-	* eval.c (eval): file-name and line-number set properly.
-
-	* parse.y (assign_in_cond): literal assignment is now warning, not
-	  compile error.
-
-	* error.c (Warn): Warn() always print message, OTOH Waring()
-	  prints when verbose flag is set.
-
-Tue Mar 24 12:50:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (ruby_prog_init): `.' should come last in the load-path.
-
-	* eval.c (Init_eval): `__send__', alias for `send'.
-
-Mon Mar 23 12:44:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_chomp_bang): now takes `rs' as an argument.
-
-	* eval.c (thread_free): main_thread should not be freed.
-
-Fri Mar 20 16:40:34 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_chomp_bang): chomp! (and other ! methods) returns
-	  nil if it does not modify the string.
-
-	* string.c (str_sub_iter_s): should check last pattern since it
-	  may be matched to null.
-
-Thu Mar 19 13:48:55 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_04.
-
-	* parse.y (yylex): `10e0.9' should cause syntax error.
-
-Wed Mar 18 17:46:31 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (load_file): new file object constant DATA.  Only
-	  available for the script from the file.
-
-	* regex.c (re_match): forwarding failure point popped too much.
-
-Tue Mar 17 18:23:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* math.c (math_frexp): newly added.
-
-	* math.c (math_ldexp): ditto.
-
-	* bignum.c (bigdivmod): calculates modulo.
-
-	* numeric.c (fix_remainder): returns reminder, formerly introduced
-	  as modulo.
-
-	* numeric.c (fix_modulo): calculates proper `modulo'.
-
-	* bignum.c (bigdivmod): wrong sign for reminder.
-
-Mon Mar 16 17:07:28 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_03.
-
-Mon Mar 16 16:33:53 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* io.c (pipe_finalize): needed to add pipe_finalize to pipes on
-	  cygwin32.
-
-Mon Mar 16 14:11:06 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (ins_methods_i): needed to consider NOEX_UNDEF.
-
-Mon Mar 16 13:23:53 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* io.c (io_check_closed): check for `fptr->f2 == NULL'.
-
-	* io.c (io_fptr_close): ditto.
-
-Mon Mar 16 11:49:25 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (pipe_atexit): free()ing referencing pipe_list.
-
-	* range.c (range_length): returns zero, if the first is greater
-	  than the last.
-
-	* signal.c (trap_restore_mask): restore signal mask before raising
-	  exceptions and throws.
-
-Fri Mar 13 13:49:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_02.
-
-	* object.c (mod_clone): need to dups constants and instance
-	  variables.
-
-	* eval.c (rb_eval): forgot to initialize body for NODE_DEFS.
-
-	* eval.c (rb_eval): retrieve self from calling frame, since self
-	  changes sometimes.
-
-	* env.h (FRAME): need to save self in the calling frame.
-
-	* io.c (f_gets_method): rs should be initialized by RS.
-
-Thu Mar 12 15:33:57 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* experimental release 1.1b9_01.
-
-	* range.c (range_s_new): check values by `first <= last'.
-
-	* parse.y (lastline_set): fixed offset for $_ and $~ in the local
-	  variable space.
-
-Wed Mar 11 02:14:17 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_gets): handle normal case specially for speed.
-
-	* eval.c (rb_disable_super): function to disable superclass's
-	  method explicitly.
-
-	* eval.c (rb_eval): inherits previous method definition's
-	  NOEX_UNDEF-ness, if exists.
-
-	* class.c (rb_define_method): disables superclass's overriding
-	  method by default.
-
-Wed Mar 11 01:40:48 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* numeric.c (flo_gt,etc.): do not depend on `<=>', to handle NaN.
-
-Tue Mar 10 00:03:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (load_file): understands multiple options in #! line.
-
-	* regex.c (re_compile_pattern): support for [:alpha:] etc.
-
-Mon Mar  9 16:53:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.h (GetOpenFile): embed io_check_closed in GetOpenFile.
-
-	* sprintf.c (f_sprintf): zero padding failed for negative
-	  integers.
-
-	* sprintf.c (remove_sign_bits): failed to remove some bits.
-
-Sat Mar  7 21:51:46 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* class.c (ins_methods_i): body may be NULL for some case.
-
-Fri Mar  6 17:23:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (mbcinit): table driven mbchar detection.
-
-	* object.c (obj_alloc): check for allocating instance for the
-	  primitive classes (mostly perfect).
-
-	* ext/curses/curses.c (curses_finalize): restore original state at
-	  interpreter termination.
-
-	* ext/curses/curses.c (curses_addstr): forgot to check argument
-	  type (caused SEGV).  now uses STR2CSTR() macro.
-
-Thu Mar  5 13:47:39 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (block_pass): accepts method object as block args.
-
-	* eval.c (f_missing): use any_to_s() for stringify.
-
-Wed Mar  4 01:39:52 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (block_arg): new syntax - block argument in the
-	  calling arglist.
-
-	* eval.c (rb_call): no module search. simplified a lot.
-
-	* eval.c (rb_eval): block arg support.
-
-	* parse.y (f_block_arg): new syntax - block argument in the
-	  formal arglist.
-
-Tue Mar  3 14:20:15 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (obj_method): returns bound method object.
-
-	* eval.c (rb_call): argument check for empty methods.
-
-	* ruby.h (NUM2CHR): new macro, originally from curses module.
-
-Tue Mar  3 13:03:35 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* io.c (io_putc): new method.
-
-Tue Mar  3 11:21:28 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_inspect): more strict charcode detection.
-
-	* eval.c (thread_stop): stopping only thread raises ThreadError
-	  exception.
-
-Tue Mar  3 08:04:56 1998  Tadayoshi Funaba  <tadf@kt.rim.or.jp>
-
-	* struct.c (struct_alloc): incomplete struct initialization made
-	  GC to access unallocated addresses.
-
-Mon Mar  2 16:28:27 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (thread_stop_method): remove Thread#stop.
-
-Fri Feb 27 18:16:26 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b9 released.
-
-Fri Feb 27 09:36:35 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (hash_delete_nil): needed to compare value to nil, since
-	  nil is the valid key for hashes.
-
-	* hash.c (hash_foreach_iter): rehashing causes IndexError.
-
-	* hash.c (hash_foreach_iter): rehash check by pointer comparison.
-
-Thu Feb 26 17:22:13 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (fname): convert reswords into symbols.
-
-	* parse.y (reswords): reserved words are now embedded in the
-	  syntax (sigh).
-
-	* parse.y: now reserved words can be method names safely.
-
-Wed Feb 25 15:50:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (mod_module_eval): clear the_scope's PRIVATE flag before
-	  calling eval().
-
-	* gc.c (gc_call_finalizer_at_exit): run finalizers before any data
-	  object being freed.
-
-	* eval.c (rb_eval): needed to keep prot_tag->retval before
-	  evaluating the ensure clause.
-
-Tue Feb 24 11:16:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): reserved words can be appear as method names at
-	  right after 'def' and `.'(dot), like foo.next.
-
-	* eval.c (return_check): checks for return out of thread (formerly
-	  done in return_value).
-
-	* eval.c (POP_TAG): copy retval to outer level.
-
-	* eval.c (return_value): just set retval, no check, no unwinding.
-
-	* parse.y (nextc): line continuation by backslash at end of line.
-
-	* regex.c (re_compile_pattern): forgot to clear pending_exact on
-	  closing parentheses.
-
-	* parse.y (assignable): should not assign dyna_var to true, if it
-	  is already defined.
-
-Mon Feb 23 14:35:03 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (obj_is_kind_of): no longer accepts true/false/nil.
-
-	* object.c ({true,false,nil}_to_i): can be converted into integers.
-
-Mon Feb 23 12:11:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (reg_s_quote): needed to be mbchar aware.
-
-	* eval.c (proc_s_new): wrong iter mark.
-
-Sat Feb 21 22:59:30 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* io.c (f_syscall): no argument check.
-
-Fri Feb 20 10:17:51 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b8 released.
-
-	* ext/kconv/kconv.c (kconv_kconv): default output code now be
-	  determined according to the value of $KCODE.
-
-	* re.c (rb_get_kcode): can retrieve $KCODE from C code.
-
-	* parse.y (stmt): if/unless modifiers returns nil, if condition is
-	  not established.
-
-Thu Feb 19 11:06:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/kconv/kconv.c (kconv_kconv): charcode can be specified by
-	  code name (JIS, SJIS, EUC like value of $KCODE).
-
-	* regex.c (re_compile_pattern): forgot to fixup_jump for (?:..).
-
-	* regex.c (re_compile_pattern): needed to clear pending_exact on
-	  non-registering grouping (?:...).
-
-Wed Feb 18 19:54:21 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (here_document): needed to set lex_state to EXPR_END.
-
-Wed Feb 18 18:45:10 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* patches for cygwin32 applied.
-
-Wed Feb 18 00:41:31 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_sub_s): needed to be mbchar aware to increment one
-	  character.
-
-	* regex.c (re_match): \Z matches newline just before the end of
-	  the string.
-
-Tue Feb 17 00:04:32 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_arg): Time.gm and Time.local now understands
-	  Time#to_a format.
-
-	* string.c (str_sub_s): replace happened twice for null pattern.
-
-	* regex.c (re_search): null pattern should not match after newline
-	  at the end of string.
-
-	* time.c (time_isdst): now returns boolean value.
-
-	* error.c (rb_check_type): treat special constants in messages.
-
-	* parse.y (yylex): new form `::Const' to see toplevel constants.
-
-	* parse.y (cond): SEGV on `if ()'.
-
-	* gc.c (obj_free): some data needed explicit free().
-
-Mon Feb 16 23:55:40 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (blk_free): release duplicated block informations.
-
-	* eval.c (blk_copy_prev): duplicate outer block information into
-	  the heap, when proc/binding created.
-
-Mon Feb 16 14:38:25 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_mon): now 1 for January and so on.
-
-	* time.c (time_year): year in 19xx (no + 1900 needed anymore).
-
-Mon Feb 16 13:28:33 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): need to fetch mbchar's second byte
-	  without translation.
-
-Mon Feb 16 12:29:27 1998  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* eval.c (f_pass_block): pass iterator block to other method.
-
-Fri Feb 13 08:16:11 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (parse_regx): handle \s before read_escape().
-
-	* parse.y (read_escape): `\s' in strings as space.
-
-Tue Feb 10 17:29:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b7 released.
-
-	* string.c (str_aset): string insertion by `str[n] = str2'.
-
-	* string.c (str_oct): does recognize `0x'.
-
-	* sprintf.c (f_sprintf): use base 10 for conversion from string to
-	  integer.
-
-Mon Feb  9 14:51:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* numeric.c (do_coerce): proper error message.
-
-	* string.c (str_sum): bug - masked by wrong value. (sigh..)
-
-Sat Feb  7 15:11:14 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_empty): new method
-
-Fri Feb  6 01:42:15 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c (time_asctime): use asctime(3), not strftime(3).
-
-Thu Feb  5 18:58:46 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_fptr_close): do not free path on close().
-
-	* array.c (ary_filter): new method.
-
-	* enum.c (enum_each_with_index): new method.
-
-Thu Feb  5 14:10:35 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (primary): singleton class def can be appeared inside
-	  method bodies.
-
-	* hash.c (hash_replace): replace content.
-
-	* string.c (str_replace_method): replace content.
-
-	* array.c (ary_replace_method): replace elements.
-
-	* string.c (str_succ_bang): String#succ!
-
-Thu Feb  5 18:20:30 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* string.c (str_upcase_bang): multi byte character support.
-
-Wed Feb  4 13:55:26 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (ary_reverse): SEGV on empty array reverse.
-
-Tue Feb  3 12:24:07 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (match_to_a): non matching element should be nil.
-
-	* ruby.c (ruby_load_script): load script after all initialization.
-
-	* bignum.c (str2inum): need to interpret prefix `0' of `0x'.
-
-Tue Feb  3 10:00:18 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* numeric.c (fix_rshift): use `sizeof(INT)*8' instead of 32.
-
-Mon Feb  2 14:09:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (set_arg0): grab environment region too.
-
-Thu Jan 29 18:36:25 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* process.c (rb_proc_exec): check `sh' to be exist.
-
-Thu Jan 29 18:18:19 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_stdio_set): assignment to $stdin or $stdout does
-	  reopen() as well as $stderr.
-
-Thu Jan 29 14:18:40 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (mod_ancestors): should not include singleton classes.
-
-	* object.c (obj_type): should not return internal class.
-
-	* io.c (io_reopen): unwillingly closes stdio streams.
-
-Thu Jan 29 11:50:35 1998  Toshihiko SHIMOKAWA  <toshi@csce.kyushu-u.ac.jp>
-
-	* ext/socket/socket.c (udp_addrsetup): forgot to use htons().
-
-Tue Jan 27 23:15:24 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* keywords: __FILE__, __LINE__ are available again.
-
-Fri Jan 23 14:19:28 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b6 released.
-
-	* object.c (mod_to_s): need to duplicate classpath.
-
-	* error.c (exc_inspect): need to duplicate classpath.
-
-Thu Jan 22 00:37:47 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.h (STR2CSTR): new macro to retrieve char*.
-
-	* class.c (rb_define_method): `initialize' should always be
-	  private, even if it defined by C extensions.
-
-	* eval.c (rb_eval): `initialize' should always be private.
-
-Thu Jan 22 16:21:08 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): some singleton class def cause SEGV.
-
-	* eval.c (TMP_ALLOC): replace ALLOCA_N, where thread context
-	  switch may happen.
-
-Wed Jan 21 01:43:42 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (PUSH_FRAME): do not use ALLOCA_N().  crash on some
-	  platforms that use missing/alloca.c.
-
-	* regex.c (re_compile_pattern): too many pops for non register
-	  subexpr.
-
-	* parse.y (yylex): open parentheses after identifiers are argument
-	  list, even if whitespaces have seen.
-
-Tue Jan 20 15:19:59 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (terms): quoted word list by %w(a b c).
-
-	* ext/tcltklib/extconf.rb: more accurate check for tcl/tk libs.
-
-	* file.c (rb_stat): most of the FileTest methods (and function
-	  `test') accept File objects as the argument.
-
-Tue Jan 19 18:19:24 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/extmk.rb.in (install): there should be no newline after install:
-
-	* re.c (MIN): renamed from min().  there's a local variable named
-	  min in the file, so that some cpp will raise an error.
-
-Mon Jan 19 16:30:05 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b5 released.
-
-	* process.c (rb_syswait): no exception raised.
-
-Fri Jan 16 00:43:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.h (CLONESETUP): copies its singleton classes too.
-
-	* class.c (singleton_class_attached): saves binded object in the
-	  singleton classes.
-
-	* eval.c (rb_eval): calls singleton_method_added even in the
-	  singleton class clauses.
-
-Fri Jan 15 23:22:43 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ruby.c (proc_options): -S does not recognize PATH.
-
-Thu Jan 15 02:03:12 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_clear_cache_by_id): clear only affected cache
-	  entries.
-
-Wed Jan 14 02:14:48 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c: new UDP/IP socket classes.
-
-Tue Jan 13 10:00:18 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_cmp): ignorecase($=) works wrong.
-
-Fri Jan  9 13:19:55 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b4 released.
-
-	* eval.c (f_missing): class name omitted from the error message.
-
-	* error.c (exc_inspect): description changed.
-
-	* string.c (Init_String): GlobalExit's superclass did not filled,
-	  since GlobalExit created earlier than String.
-
-Thu Jan  8 12:10:09 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (aryset): expr in the brackets can be null.
-
-Wed Jan  7 21:13:56 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_reopen): keep stderr unclosed.
-
-	* io.c (io_errset): keep stderr unclosed.
-
-Tue Jan  6 00:27:43 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y: syntax modified for `while expr do .. end' etc.
-
-	* process.c (f_exec,f_system): can supply arbitrary name for the
-	  new process.
-
-Mon Jan  5 16:59:13 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* file.c (file_s_basename): removes any extension by ".*".
-
-Sun Jan  4 19:36:22 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* parse.y (yylex): needed to update lex_p (reading point).
-
-Sat Jan  3 19:14:14 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* class.c,object.c: duplicate defines mKernel and cFinxnum.
-
-Fri Jan  2 20:38:59 1998  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/curses/curses.c (NUM2CHAR): uses the first character for
-	  string arguments.
-
-	* array.c (ary_fill): did not extend array for ranges.
-
-	* array.c (beg_len): did not return end pos bigger than size.
-
-Fri Jan  2 02:09:16 1998  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* dir.c (dir_s_chdir): bug in nil check.
-
-	* array.c (ary_fill): bug in nil check.
-
-Tue Dec 30 11:46:23 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* hash.c (env_path_tainted): checks directories in PATH
-	  environment variable are not world writable.
-
-	* ruby.c (load_file): invoke specified interpreter if the #! line
-	  does not contain the word `ruby'.
-
-Fri Dec 26 03:26:41 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (uscore_get): type information included in the error
-	  message.
-
-	* variable.c (f_untrace_var): does not free trace-data within
-	  trace procedure.
-
-Thu Dec 25 02:50:29 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b3 released.
-
-	* ruby.h: inlining some functions on gcc 2.x
-
-Tue Dec 23 02:47:33 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): public/private information kept in the current
-	  scope, to remove undesired state from the class/module.
-
-	* time.c (time_strftime): remove hidden limit of 100 bytes of
-	  result string, using malloc'ed buffer.
-
-	* hash.c (hash_update): merges the contents of another hash,
-	  overriding existing keys.
-
-	* regex.c (must_instr): totally re-written.
-
-	* io.c (read_all): try to allocate proper sized buffer using
-	  fstat(2) for speedup.
-
-Sat Dec 20 00:27:28 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (must_instr): need to skip 2 bytes for mbchars.
-
-Fri Dec 19 01:18:29 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b2 released.
-
-	* eval.c (check_errat): check and convert (if necessary) traceback
-	  information before assigning to the variable $@.
-
-	* eval.c (f_raise): optional third argument to specify traceback
-	  information.
-
-	* io.c (f_open): prevent infinite recursive call.
-
-Thu Dec 18 19:33:47 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_rindex): now accepts regexp as index.
-
-Thu Dec 18 18:42:50 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/socket/extconf.rb: modified to detect win32 socket lib.
-
-Thu Dec 18 00:25:03 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* re.c (reg_equal): checks for source and casefold and kcode matching.
-
-	* marshal.c: became built-in module.
-
-	* ext/marshal/marshal.c (r_object): displays struct name for
-	  non-compatible struct.
-
-	* string.c (str_index_method): now searches character (fixnum) in
-	  the string.
-
-	* string.c (str_include): redefine `include?'.
-
-	* regex.c (re_match): start_nowidth saves current stack position
-	  to stop_nowidth.
-
-	* regex.c (re_compile_pattern): add space to stop_nowidth to save
-	  runtime stack position.
-
-Tue Dec 16 14:57:43 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (scan_once): wrong exception for regexp that match with
-	  null string (use substr instead of subseq).
-
-Sat Dec 13 00:13:32 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (expr): remove bare assocs from expr rule.
-
-	* rbconfig.rb: renamed from config.rb (it was too generic name).
-
-Fri Dec 12 00:50:25 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (expr): warns if BEGIN or END appear in the method
-	  bodies.
-
-	* string.c (str_match): calls y =~ x if y is neither String nor
-	  Regexp so that eregex.rb works.
-
-	* eval.c (f_at_exit): to register end proc.
-
-	* class.c (rb_define_module_function): define 'function' method
-	  for the Module, not private method.
-
-	* class.c (rb_define_function): function to define `function' method.
-
-	* eval.c (rb_eval): inherit visibility from superclass's method
-	  except when it is set to `function'
-
-	* eval.c (rb_eval): new visibility status `function'.
-
-	* parse.y (yycompile): do not clear eval_tree. thus enable multiple
-	  command line script by option `-e'.
-
-	* eval.c (rb_eval): END execute just once.
-
-	* parse.y (expr): BEGIN/END built in the syntax.
-
-Thu Dec 11 13:14:35 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (mod_le): Module (or Class) comparison.
-
-	* eval.c (rb_remove_method): raises NameError if named method does
-	  not exist.
-
-	* ext/curses/curses.c: remove CHECK macro for BSD curses.
-
-Thu Dec 11 12:44:01 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* pack.c: sun4 cc patch
-
-Wed Dec 10 15:21:36 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/marshal/marshal.c (marshal_load): can supply evolution proc
-	  object as optional second argument.
-
-	* re.c (reg_source): get source string of the regular expression.
-
-Tue Dec  9 10:05:17 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b1 released.
-
-	* parse.y (tokadd): token buffer overrun.
-
-	* ruby.c (ruby_prog_init): forgot to protect rb_argv0 from gc.
-
-	* eval.c (ruby_run): call finalizers at process termination.
-
-	* gc.c (gc_call_finalizer_at_exit): call free proc for every Data
-	  Wrapper, and finalizer for specified objects at termination.
-
-	* version.c (show_version): version format changed.
-
-	* regex.c (re_match): wrong match with non-greedy if they appear
-	  more than once in regular expressions.
-
-	* sample/ruby-mode.el (ruby-expr-beg): forgot to handle modifiers.
-
-Mon Dec  8 19:00:15 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_puts): just put a newline if no argument given.
-
-	* ext/tcltklib/tcltklib.c (lib_mainloop): thread-aware tk handle
-	  when $tk_thread_safe is set.
-
-	* ext/tcltklib/tcltklib.c (lib_mainloop): use Tcl_DoOneEvent()
-	  instead of Tk_MainLoop().
-
-Mon Dec  6 07:11:16 1997  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* io.c (io_puts): core dumped without any argument.
-
-Fri Dec  5 18:17:17 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (mod_remove_method): remove (not undef) a method from the
-	  class/module.
-
-	* variable.c (obj_remove_instance_variable): method to remove
-	  instance variables.
-
-Thu Dec  4 13:50:29 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1b0 released.
-
-	* string.c (str_aref): called str_index for regexp.
-
-Mon Dec  1 15:24:41 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* compar.c (cmp_between): wrong comparison made.
-
-Wed Nov 26 18:18:05 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* lib/mkmf.rb: generate Makefile for extension modules out of ruby
-	  source tree. use like `ruby -r mkmf extconf.rb'.
-
-	* numeric.c (fix2str): enlarge buffer to prevent overflow on some
-	  machines.
-
-	* parse.y (here_document): wrong line number generated after here-doc.
-
-Fri Nov 21 13:17:12 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (yylex): skip multibyte characters in comments.
-
-Wed Nov 19 17:19:20 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (nil_to_a): nil.to_a => [].
-
-	* parse.y (call_args): wrong node generation.
-
-Tue Nov 18 10:13:08 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* array.c (Init_Array): Array#=== works as Array#include?
-
-	* regex.c (re_compile_pattern): insert initialize code for jump_n,
-	  before entering loops.
-
-	* re.c (reg_search): does not save registers unless $& etc appear
-	  in the script.
-
-Mon Nov 17 13:01:43 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (is_defined): add defined? check for receivers and
-	  arguments for calls.
-
-	* re.c (reg_search): cache last match object.
-
-	* re.c (match_aref): $[0] etc. are available.
-
-Sat Nov 15 00:11:36 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* io.c (io_s_popen): "rb" detection
-
-Fri Nov 14 18:28:40 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (scan_once): returns whole match if the pattern does
-	  not contain any parentheses.
-
-Thu Nov 13 14:39:06 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (str_sub): returns copy of the receiver string, even if
-	  any substitution occurred.
-
-	* regex.c (re_compile_pattern): no-width match by (?=..), (?!..).
-
-Wed Nov 12 13:44:47 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* time.c: remove coerce from Time class.
-
-	* regex.c (re_match): non-greedy match by ??, *? +?, {n,m}?.
-
-Mon Nov 10 11:24:51 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): non-registering parens (?:..).
-
-	* regex.c (re_compile_pattern): new meta character \< (wordbeg)
-	  and \> (wordend).
-
-	* regex.c (re_compile_pattern): embedded comment for regular
-	  expression by (?#...).
-
-Fri Nov  7 16:58:24 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* regex.c (re_compile_pattern): perl5 regexp \A and \Z available.
-
-	* regex.c (re_compile_pattern): can expand compile stack dynamically.
-
-	* regex.c (PUSH_FAILURE_POINT): wrong compare condition.
-
-Wed Nov  2 16:00:00 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* string.c (str_sub_s): "".sub! "", "" => "\000"
-
-Fri Oct 31 15:52:10 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (assoc): keyword assoc like {fg->"black"}.
-
-Thu Oct 30 17:33:38 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_println): print with newline, which is not affected by
-	  the values of $/ and $\.
-
-Thu Oct 30 16:54:01 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* string.c (str_chop_bang): "".chop caused SEGV.
-
-	* string.c (str_chomp_bang): method to chop out last newline.
-
-Mon Oct 27 13:49:13 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/extmk.rb.in: library may have pathname contains `.'
-
-	* eval.c (rb_rescue): should not protect SystemError.
-
-Fri Oct 24 10:58:53 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_s_with_open_stream): ensures to close stream.
-
-Thu Oct 23 11:17:44 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_errset): value of $stderr can be changed (to any IO
-	  object).
-
-	* io.c (next_argv): $< can be anything that responds to `write'.
-
-	* file.c (file_s_with_open_file): ensures to close file.
-
-	* error.c (exception): create error under the current class/module.
-
-	* range.c (range_eqq): fixnum check for last needed too.
-
-Wed Oct 22 12:52:30 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/socket/socket.c: Socket::Constants added.
-
-	* file.c: File::Constants added for inclusion.
-
-	* array.c (ary_join): call ary_join() recursively for the 1st
-	  array element.
-
-Mon Oct 20 12:18:29 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ruby.c (load_file): wrong condition for #! check with -x.
-
-	* file.c (file_s_dirname): did return "" for "/a".
-
-Fri Oct 17 14:29:09 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c: now works on alpha-linux.
-
-	* bignum.c (bigadd): some undefined side effect order assumed.
-
-Wed Oct 15 17:49:24 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* intern.h: function prototypes added.
-
-Mon Oct 13 16:54:18 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (rb_define_class_id): call superclass's `inherited'
-	  method when making subclasses.
-
-	* parse.y (nextc): clear lex_lastline at the end of file.
-
-	* object.c (Init_Object): need to undef Class#append_features.
-
-	* eval.c (rb_eval): no warning on extending classes or modules.
-
-Thu Oct  9 11:17:50 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (error_print): the exception name follows after the error
-	  message.
-
-	* eval.c (compile_error): error message slightly changed.
-
-	* parse.y (nextc): script parsing will be terminated by __END__ at
-	  beginning of line.
-
-	* eval.c (compile_error): `__END__' is no longer a keyword.
-
-	* parse.y (nextc): protect lastline read from script stream.
-
-Tue Oct  7 14:06:06 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha9 released.
-
-	* eval.c (mod_append_features): renamed from extend_class.
-
-	* eval.c (rb_eval): defining method calls `method_added'.
-
-	* eval.c (ruby_options): exception while processing options must
-	  terminate the interpreter.
-
-	* error.c (Init_Exception): wrong method configuration.  `new'
-	  should have been a singleton method.
-
-Mon Oct  6 18:55:38 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/kconv/kconv.c (kconv_guess): code to guess character code
-	  from string.
-
-Mon Oct  6 18:38:17 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* pack.c: now encode/decode base64 by `m' template.
-
-Fri Oct  3 10:51:10 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* MANIFEST: needed to include lex.c in the distribution.
-
-	* eval.c (ruby_options): f_require() called too early.
-
-	* eval.c (rb_provide): module extensions should always be `.o'.
-
-Thu Oct  2 11:38:31 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha8 released.
-
-	* ext/marshal/marshal.c (r_object): remove temporal regist for
-	  structs. (caused problem if structs form cycles.)
-
-	* parse.y (match_gen): static binding for match(=~) calls
-	  with regexp literals.
-
-Wed Oct  1 15:26:55 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c: protect retval in struct tag from GC for C_ALLOCA.
-
-	* eval.c: no more pointer value from setjmp/longjmp.
-
-Wed Oct  1 14:01:49 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/marshal/marshal.c (w_byte): argument must be char.
-
-Wed Oct  1 10:30:22 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (mod_const_at): global constants now belongs to the
-	  class Object.
-
-	* object.c (Init_Object): new global constant NIL.
-
-	* ext/marshal/marshal.c (marshal_dump): try to set binmode.
-
-	* ext/marshal/marshal.c (r_object): forgot to re-regist structs in
-	  the object table.
-
-	* eval.c (ruby_options): call Init_ext() before any require()
-	  calls by `-r'.
-
-Fri Sep 30 14:29:22 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/marshal/marshal.c (w_object): marshal dumped core.
-
-Tue Sep 30 10:27:39 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sample/test.rb: bignum test suits added.
-
-	* eval.c (rb_eval): new pseudo variable `true' and `false'.
-
-	* parse.y: new keywords `true' and `false' added.
-
-Mon Sep 29 13:37:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (forbid_setid): forbid some options in suid mode.
-
-	* ruby.h (NUM2DBL): new macro to convert into doubles.
-
-Mon Sep 27 09:53:48 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>
-
-	* bignum.c: modified for speeding.
-
-Fri Sep 26 18:27:59 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* sample/from.rb: some extensions.
-
-Mon Sep 29 13:15:56 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (lhs): no more syntax error on `obj.CONSTANT = value'.
-
-Fri Sep 26 14:41:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (ruby_run): deferred calling Init_ext() just before eval_node.
-
-Fri Sep 26 13:27:24 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* io.c (io_isatty): forgot to return TRUE value.
-
-Fri Sep 25 11:10:58 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>
-
-	* eval.c: use _setjmp/_longjmp instead of setjmp/longjmp on some
-	  platforms.
-
-Wed Sep 24 17:43:13 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* string.c (Init_String): String#taint and String#taint? added.
-
-	* class.c (mod_ancestors): ancestors include the class itself.
-
-Wed Sep 24 00:57:00 1997  Katsuyuki Okabe  <HGC02147@niftyserve.or.jp>
-
-	* X68000 patch.
-
-Tue Sep 23 20:42:30 1997  EGUCHI Osamu  <eguchi@shizuokanet.or.jp>
-
-	* parse.y (node_newnode): SEGV on null node setup.
-
-Mon Sep 22 11:22:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (ruby_prog_init): wrong safe condition check.
-
-Sun Sep 21 14:46:02 1997  MAEDA shugo  <shugo@po.aianet.ne.jp>
-
-	* error.c (exc_inspect): garbage added to classpath.
-
-Fri Sep 19 11:49:23 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (newtok): forgot to adjust buffer size when shrinking
-	  the token buffer.
-
-	* enum.c (enum_find): rb_eval_cmd() does not return value.
-
-	* io.c (pipe_open): close fds on pipe exec. fcntl(fd, F_SETFD, 1)
-	  no longer used.
-
-Tue Sep 16 17:54:25 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* file.c (f_test): problem if wrong command specified.
-
-	* ruby.c (ruby_prog_init): close stdaux and stdprn for MSDOS.
-
-	* ruby.c (ruby_prog_init): should not add path from environment
-	  variable, if ruby is running under setuid.
-
-	* process.c (init_ids): check suid check for setuid/seteuid etc.
-
-Mon Sep 15 00:42:04 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* regex.c (re_compile_pattern): \w{3} and \W{3} did not work.
-
-Thu Sep 11 10:31:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha7 released.
-
-	* ext/socket/socket.c (sock_new): no setbuf() for NT.
-
-	* io.c (rb_fopen,rb_fdopen): set close-on-exec for every fd.
-
-Wed Sep 10 15:55:31 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ext/marshal/marshal.c (r_bytes0): extra big length check.
-
-Tue Sep  9 16:27:14 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (pipe_fptr_atexit): clean up popen()'ed fptr.
-
-	* error.c (set_syserr): some system has error code that is bigger
-	  than sys_nerr. grrr.
-
-Mon Sep  8 18:33:33 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* io.c (io_s_new): dereferenced nil for optional mode.
-
-Fri Sep  5 10:26:03 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (class_instance_methods): do not include methods which
-	  are changed to private in subclasses.
-
-Thu Sep  4 12:38:53 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* variable.c (f_global_variables): list name of the global
-	  variables.
-
-	* object.c (obj_id): returns unique integer.
-
-Wed Sep  3 14:05:16 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha6 released.
-
-	* eval.c (mod_s_constants): context sensitive constant list.
-
-	* variable.c (mod_constants): no more `all' option.
-
-	* variable.c (mod_const_of): the values for autoload classes are
-	  their name strings.
-
-	* class.c (class_instance_methods): no special treatment for
-	  singleton classes.
-
-	* object.c (obj_singleton_methods): returns list of singleton
-	  method names.
-
-	* parse.y (yylex): no here document after `class' keyword.
-
-	* eval.c (f_load): expand path if fname begins with `~'.
-
-Tue Sep  2 13:19:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (ins_methods_i): do not list undef'ed methods.
-
-Mon Sep  1 13:42:48 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha5 released.
-
-	* object.c (mod_attr_reader): create methods to define attribute
-	  reader/write/accessor.
-
-	* class.c (rb_define_attr): always defines accessors.
-
-	* eval.c (rb_call): alias occurred in the module body caused SEGV.
-
-	* parse.y: did not generate here document strings properly.
-
-Mon Sep  1 11:43:57 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* parse.y (yylex): heredoc dropped an extra character.
-
-Fri Aug 29 11:10:21 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* class.c (class_instance_methods): same method names should not
-	  appear more than once.
-
-	* parse.y (yylex): spaces can follow =begin/=end.
-
-	* variable.c (find_class_path): look for class_tbl also for
-	  unnamed fundamental classes, such as Object, String, etc.
-
-	* variable.c (rb_name_class): can't name class before String class
-	  is initialized.
-
-	* inits.c (rb_call_inits): unrecognized dependency from GC to
-	  Array.
-
-	* variable.c (find_class_path): could not find class if Object's
-	  iv_tbl is NULL.
-
-Thu Aug 28 13:12:05 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha4 released.
-
-	* variable.c (mod_constants): wrong condition for singleton
-	  class.
-
-	* parse.y (yylex): revised `=begin' skip code.
-
-	* parse.y (here_document): forgot to free(eos).
-
-	* parse.y (yylex): spaces after `<<' prohibited for here
-	  documents to avoid confusing with operator `<<'.
-
-	* eval.c (is_defined): separated from rb_eval().
-
-Wed Aug 27 11:32:42 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha3 released.
-
-	* variable.c (mod_name): returns name of the class/module.
-
-	* parse.y (here_document): finally here document available now.
-
-	* variable.c (fc_i): some classes/modules does not have iv_tbl.
-
-	* variable.c (find_class_path): avoid infinite loop.
-
-Tue Aug 26 13:43:47 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (rb_eval): undef'ing non-existing method will raise
-	  NameError exception.
-
-	* object.c (class_s_new): needed to create metaclass too.
-
-	* eval.c (error_print): no class name print for anonymous class.
-
-	* eval.c (rb_longjmp): proper exception raised if raise() called
-	  without arguments, with $! or $@ set.
-
-	* object.c (Init_Object): superclass()'s method argument setting
-	  was wrong again.
-
-	* class.c (mod_ancestors): list superclasses and included modules
-	  in priority order.
-
-Mon Aug 25 11:53:11 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha2 released.
-
-	* sample/ruby-mode.el (ruby-parse-region): auto-indent now
-	  supports "\\" in the strings.
-
-	* struct.c (struct_getmember): new API to get member value from C
-	  language side.
-
-Sat Aug 23 21:39:05 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* parse.y (assignable): remove unnecessary local variable
-	  initialize by nil.
-
-Fri Aug 22 14:26:40 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (error_print): modified exception print format.
-
-Thu Aug 21 16:10:58 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* sample/ruby-mode.el (ruby-calculate-indent): wrong indent level
-	  calculated with keyword operators.
-
-Thu Aug 21 11:36:58 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* parse.y (arg): ary[0] += 1 cause SEGV
-
-Wed Aug 20 17:28:50 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* ruby.c (ruby_process_options): require() all modules after
-	  processing all options
-
-	* process.c (rb_proc_exec): more security checks added.
-
-	* process.c (rb_proc_exec): insecure path on exec.
-
-	* hash.c (f_getenv): PATH modification security check.
-
-Tue Aug 19 00:15:38 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha1 released.
-
-	* eval.c (mod_eval): work as normal eval() if second binding
-	  argument given.
-
-	* eval.c (rb_call): did not raise ArgumentError if too many
-	  arguments more than optional arguments (without rest arg).
-
-	* eval.c (rb_eval): did not work well for op_asgn2 (attribute
-	  self assignment).
-
-	* eval.c (Init_Thread): returns main thread.
-
-Mon Aug 18 09:25:56 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* object.c (inspect_i): did not display T_DATA instance variables.
-
-	* parse.y: provides more accurate line number information.
-
-	* eval.c (thread_value): include value's backtrace information in
-	  the variable `$@'.
-
-	* eval.c (f_abort): print backtrace and exit.
-
-Sat Aug 16 00:17:44 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (class_new_instance): do not make instance from virtual
-	  classes.
-
-	* object.c (class_s_new): do not make subclass of singleton class.
-
-Fri Aug 15 15:49:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* eval.c (call_trace_func): block context switch in the trace
-	  function.
-
-	* eval.c (rb_eval): clear method cache at class extension.
-
-	* object.c (obj_type): returns object's class even if it defines
-	  singleton methods.
-
-Fri Aug 15 19:40:43 1997  WATANABE Hirofumi  <watanabe@ase.ptg.sony.co.jp>
-
-	* ext/socket/socket.c (Init_socket): small typo caused SEGV.
-
-Wed Aug 13 17:51:46 1997  Yukihiro Matsumoto  <matz@netlab.co.jp>
-
-	* version 1.1 alpha0 released.
-
-Local variables:
-add-log-time-format: (lambda ()
-  (let* ((time (current-time))
-  	 (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/doc/ChangeLog-1.9.3 b/doc/ChangeLog-1.9.3
deleted file mode 100644
index d6aaea7f19..0000000000
--- a/doc/ChangeLog-1.9.3
+++ /dev/null
@@ -1,92772 +0,0 @@
-Sun Jul 10 22:50:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (rmpd_power_by_big_decimal): fix
-	  precision treatment errors.
-
-	* test/bigdecimal/test_bigdecimal.rb: add tests for the above change.
-	  fix precision treatment errors.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_power): precision argument
-	  should be optional for its compatibility.
-
-Sun Jul 10 22:38:09 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (var_ref): distinguish vcall from local variable
-	  references.  based on a patch by Michael Edgar michael.j.edgar
-	  AT dartmouth.edu.  Bug #5002
-
-Sun Jul 10 21:51:29 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* internal.h: add comments (cautions).
-
-Sun Jul 10 20:59:38 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: Add new class variable `@@testfile_prefix`.
-	  This is for changing test name prefix. (For testing)
-
-	* test/testunit/tests_for_parallel/ptest_first.rb: Renamed from
-	  test_first.rb
-
-	* test/testunit/tests_for_parallel/ptest_second.rb: Renamed from
-	  test_second.rb
-
-	* test/testunit/tests_for_parallel/ptest_third.rb: Renamed from
-	  test_third.rb
-
-	* test/testunit/tests_for_parallel/ptest_forth.rb: Renamed from
-	  test_forth.rb
-
-	* test/testunit/tests_for_parallel/runner.rb: Remove misc.rb
-
-	* test/testunit/tests_for_parallel/ptest_first.rb: ditto.
-
-	* test/testunit/tests_for_parallel/ptest_second.rb: ditto.
-
-	* test/testunit/tests_for_parallel/ptest_third.rb: ditto.
-
-	* test/testunit/tests_for_parallel/ptest_forth.rb: ditto.
-
-	* test/testunit/tests_for_parallel/misc.rb: Removed because no longer
-	  needed.
-
-	* test/testunit/test_parallel.rb: Fix assertions for above.
-
-Sun Jul 10 16:57:08 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_throw): check a class frame.
-	  Fixes Bug #4648.
-	  The patch is contributed by Kazuki Tsujimoto.
-
-	* bootstraptest/test_proc.rb: add tests for above.
-
-Sun Jul 10 17:28:01 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (mutex_debug): use exit(EXIT_FAILURE) instead of
-	  exit(1).
-	* thread_pthread.c (add_signal_thread_list): ditto.
-	* thread.c (rb_thread_call_with_gvl): ditto.
-	* util.c (Bug): ditto.
-
-Sun Jul 10 15:58:12 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: Merge json gem 1.5.4+ (f7f78896607b6f6226cd).
-	  [Bug #4700]
-
-Sun Jul 10 16:41:32 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm_core.h (typedef struct rb_vm_struct): create a new
-	  'inhibit_thread_creation' field.
-	* thread.c (rb_thread_terminate_all): set inhibit_thread_creation.
-	* thread.c (thread_s_new): don't permit to create new thread
-	  if the VM is under destruction. Otherwise evil finalizer code
-	  can make SEGV. [Bug #4992][ruby-core:37858]
-
-	* bootstraptest/test_objectspace.rb: new test for this fix.
-
-Sun Jul 10 16:06:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* signal.c (sigsegv): use abort() instead of exit() when nested
-	  SEGV was happen. Because unnested SEGV use abort().
-	  [Bug #5013][ruby-dev:44078]
-
-Sun Jul 10 15:30:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* load.c (rb_f_autoload): prevent to autoload for singleton
-	  classes.  fixes [Bug #4886] [ruby-dev:43816]
-
-	* bootstraptest/test_autoload.rb: add tests for the above change.
-
-Sun Jul 10 15:09:17 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit/assertions.rb: Import documentation patch by Justin
-	  Collins. [ruby-core:37225] [Feature #4903]
-
-Sun Jul 10 14:57:36 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: canonicalizes nth and sf.
-
-Sun Jul 10 14:13:50 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* internal.h (rb_thread_call_with_gvl, rb_thread_call_without_gvl):
-	  make them visible as experimental C APIs.  fixes Feature #4328.
-
-Sun Jul 10 12:18:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_power): support non-integral
-	  exponent.  fixes [Bug #3271]
-
-	* ext/bigdecimal/bigdecimal.c (rmpd_power_by_big_decimal): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_power_op): add a function to
-	  only use for "**" operator.
-
-	* test/bigdecimal/test_bigdecimal.rb: add a bunch of tests for the
-	  above changes.
-
-	* ext/bigdecimal/bigdecimal.c (is_integer): add an utility function.
-
-	* ext/bigdecimal/bigdecimal.c (is_negative): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (is_positive): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (is_zero): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (is_one): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (is_even): ditto.
-
-Sun Jul 10 12:08:39 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (when_vals): when a string literal is written on when
-	  clause, skip string creation to make it faster.  [ruby-dev:44068]
-	  [Feature #5000]
-
-Sun Jul 10 11:35:29 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (reduce_nodes_gen): NODE_RETURN in rescue body must not be
-	  reduced when there is an else clause.  This caused bizarre behavior
-	  in [Bug #4473] [ruby-core:35629] [ruby-core:37884].
-
-Sun Jul 10 09:46:14 2011  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* range.c (range_max): fix behavior with excluded end value.
-	  [Bug #4591]
-
-Sun Jul 10 09:13:18 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* NEWS:  Fix RubyGems version.  [Ruby 1.9 - Bug #5004]
-
-Sat Jul  9 20:01:59 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* internal.h: rb_rational_reciprocal is defined in rational.c.
-
-Sat Jul  9 19:48:31 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* internal.h: added declarations.
-	* complex.c: followed the above change.
-
-Sat Jul  9 17:24:41 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* NEWS: bigdecimal is not a builtin.
-
-Sat Jul  9 17:17:53 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: some improvements for performance.
-
-Sat Jul  9 16:56:01 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* atomic.h (ATOMIC_OR): _InterlockedOr is unavailable in VC6.
-
-	* numeric.c (ULLONG_MAX): fallback definition.
-
-Sat Jul  9 15:59:19 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_{read,write}): should be signed.
-	  Bug #5001
-
-Sat Jul  9 14:02:20 2011  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb: fix multipart form parsing bug. [Bug #3866]
-
-Sat Jul  9 11:41:03 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Add Vector#normalize [ruby-dev:43829]
-
-Sat Jul  9 09:25:06 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* enumerator.c:  Remove "enumeration sequenced by".
-	  [Ruby 1.9 - Bug #4757]
-
-Sat Jul  9 09:14:56 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* io.c:  Note that methods other than IO#gets may increase IO#lineno.
-	  [Ruby 1.9 - Bug #4902]
-
-Sat Jul  9 08:39:39 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RUN_OPT): disable gems.
-
-Sat Jul  9 08:37:05 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_close): close(2) on a fd which is being read by
-	  another thread causes deadlock on Mac OS X 10.5
-
-Fri Jul  8 21:20:39 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c: use USE_ELF instead of __ELF__ because Solaris
-	  doesn't define it. USE_ELF is already provided by configure.
-	  patched by Naohisa Goto. [ruby-dev:44066] [Bug #4998]
-
-	* addr2line.h: ditto.
-
-	* vm_dump.c: ditto.
-
-Fri Jul  8 16:40:38 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/parser/parser.rl (convert_encoding): should not modify
-	  the argument.
-
-	* ext/json/parser/parser.rl (convert_encoding): no needs to use
-	  force_encoding.
-
-Fri Jul  8 15:53:31 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_bug): get rid of segfault after all threads
-	  disposed.
-
-Fri Jul  8 15:01:06 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl.h: include openssl/e_os2.h before checking the
-	  definition of OPENSSL_SYS_WIN32.
-
-Fri Jul  8 14:40:39 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (wunlink): reverted a part of r32426. it was mistakenly
-	  mixed.
-
-Fri Jul  8 14:29:47 2011  Narihiro Nakamura  <authornari@gmail.com>
-
-	* configure.in: can't subtract void *.
-
-Fri Jul  8 14:33:26 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): define GC_MARK_STACKFRAME_WORD.
-	  fixed build problem of r32438.  the value (30) is temporary value.
-	  maybe it's enough by 20~24 according to my observation.
-
-Fri Jul  8 13:47:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_mutex_unlock_all): folded into
-	  rb_threadptr_unlock_all_locking_mutexes.
-	* thread.c (rb_threadptr_unlock_all_locking_mutexes) ditto.
-
-Fri Jul  8 13:36:02 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (thread_unlock_all_locking_mutexes): rename to
-	  rb_threadptr_unlock_all_locking_mutexes and remove static.
-	* vm_core.h: add rb_threadptr_unlock_all_locking_mutexes declaration.
-	* thread.c (thread_start_func_2): adjust the above rename.
-
-	* eval.c (ruby_cleanup): call rb_threadptr_unlock_all_locking_mutexes
-	  again after finalizer. [Bug #4988] [ruby-dev:44049]
-
-Fri Jul  8 13:06:09 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* cont.c (FIBER_MACHINE_STACK_ALLOCATION_SIZE): Fiber stack size
-	  don't need to keep multiple number of sizeof(VALUE).
-
-Fri Jul  8 11:39:12 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (sudo-precheck): true command is not standard on
-	  Windows.
-
-Fri Jul  8 10:39:52 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (gvl_destroy): fix cond_t leak.
-
-Fri Jul  8 09:17:59 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* gc.c:  Improve documentation
-
-Thu Jul  7 23:35:31 2011  Narihiro Nakamura  <authornari@gmail.com>
-
-	* gc.c: change water_mark value that may call
-	  gc_mark(lev <= GC_LEVEL_MAX) in gc_mark().
-	  In ruby_stack_check(), water_mark is a value that may call some
-	  C function. Fixes Bug #3781
-
-	* configure.in: define GC_MARK_STACKFRAME_WORD that approximate
-	  size of gc_mark() and gc_mark_children() stackframes.
-
-Thu Jul  7 17:55:05 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/testunit/test_parallel.rb (TestParallelWorker#teardown): wait
-	  the child process even if the communication pipe is broken.
-
-Thu Jul  7 15:44:42 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_set_index, rb_enc_associate_index): should
-	  check if frozen.
-
-	* parse.y (rb_intern3), ruby.c (process_options, ruby_script):
-	  defer freezing after associating encodings.
-
-Thu Jul  7 15:16:51 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (rb_num2ull): use own switch sentence.
-	  Current implementation can't convert 18446744073709551615.
-
-Thu Jul  7 06:56:15 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* cont.c (FIBER_STACK_FLAGS): workaround fix for r32420 on FreeBSD.
-
-Thu Jul  7 06:46:12 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* benchmark/driver.rb:  Add difference column to report that averages
-	  across all runs of a benchmark.  [Ruby 1.9 - Feature #4982]
-
-Thu Jul  7 06:19:38 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems.rb:  Reduce requires to improve `make benchmark`.
-	  [#4962]
-	* lib/rubygems/specification.rb:  Delay initialization of rubygems
-	  until require is called.
-
-Thu Jul  7 04:31:26 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (arg): rescue_mod is in inverse order from other
-	  modifiers.  patched by michael.j.edgar AT dartmouth.edu at
-	  [ruby-core:36248].  fixed #4716.
-
-Thu Jul  7 00:40:16 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (kill): check that the process exited or not before
-	  terminating it. [Bug #4943]
-
-Wed Jul  6 23:13:19 2011  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (opt_call_args): allow trailing comma after assoc
-	  argument e.g. 'foo(bar:1,)'.  fixed #3456
-
-Wed Jul  6 22:11:12 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/cgi/test_cgi_header.rb(test_cgi_header_nph): Validate date in
-	  "Date:" header
-
-Wed Jul  6 21:29:33 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* cont.c (fiber_machine_stack_alloc): cleanup pointer arithmetic.
-	  "size/sizeof(VALUE)" is ugly and easy confusing.
-	* cont.c (fiber_initialize_machine_stack_context): ditto.
-
-Wed Jul  6 21:24:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* cont.c (fiber_machine_stack_alloc): fix mprotect misuse. A stack
-	  guard page should have PROT_NONE.
-	* cont.c (fiber_initialize_machine_stack_context):
-	  th->machine_stack_maxsize shouldn't be included guard pages size.
-	  [Bug #4983][ruby-dev:44043]
-
-Wed Jul  6 21:23:38 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* cont.c (fiber_machine_stack_alloc): use MAP_STACK if it's provided.
-
-Wed Jul  6 21:22:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* cont.c (fiber_machine_stack_alloc): use MAP_FAILED instead of -1.
-
-Wed Jul  6 21:21:05 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* cont.c (fiber_machine_stack_alloc): remove unnecessary cast.
-
-Wed Jul  6 18:10:13 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/cgi/test_cgi_header.rb(test_cgi_header_nph): Adding space after
-	  comma.
-
-	* test/cgi/test_cgi_header.rb(test_cgi_header_nph): Remove variable
-	  `now`. Suppress warning.
-
-Wed Jul  6 12:18:09 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/cgi/test_cgi_header.rb(test_cgi_header_nph): Fix bug depends to
-	  time. The test fails if time past 1 second in line 136-145
-
-Tue Jul  5 15:28:04 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_here_document): should dispatch heredoc_end
-	  scanner event on an empty here document.  fixed Bug#4543.
-
-Tue Jul  5 13:49:26 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* addr2line.c: fix r32407 to check HAVE_ALLOCA_H.
-
-Tue Jul  5 14:05:43 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/httpauth/digestauth.rb (_authenticate):
-	  Literal texts in HTTP ABNF is case-insensitive (RFC2616 2.1),
-	  and a sample implementation in RFC2617 also ignores the case
-	  of algorithms. So now this ignores those cases.
-	  [ruby-dev:43965] [Feature #4936]
-
-	* lib/webrick/httpauth/digestauth.rb (initialize):
-	  Because of above, opera_hack is useless and removed.
-
-Tue Jul  5 01:30:01 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread_pthread.c (native_sleep): cut the waiting time up to
-	  100,000,000 because Solaris cond_timedwait() return EINVAL if an
-	  argument is greater than current_time + 100,000,000.  This is
-	  considered as a kind of spurious wakeup.  The caller to native_sleep
-	  should care about spurious wakeup.
-
-Tue Jul  5 01:24:26 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c: disable FIBER_USE_NATIVE on Solaris because resuming any
-	  Fiber caused SEGV.  I haven't follow up the issue deeply, but it
-	  works when disabling the feature.
-
-Tue Jul  5 01:22:46 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* addr2line.c: include <alloca.h> to fix a build issue on Solaris.
-
-Tue Jul  5 00:49:05 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* ext/coverage/coverage.c: resurrect r32071 + add GC guard for
-	  rb_coverages. [ruby-core:37352] [Bug #4927]
-	  [ruby-core:36539] [Feature #4796]
-
-	* test/coverage/test_coverage.rb resurrect r32071.
-
-Mon Jul  4 22:24:46 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (get_stack): For NetBSD/FreeBSD, use
-	  pthread_attr_getstack() if possible. and, remove an assumption
-	  of stack growing direction.
-
-Mon Jul  4 20:42:31 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/coverage/coverage.c: revert r32071.  The commit caused SEGV on
-	  some minor nonfree OS.  I have no means of debugging the bug.  My
-	  personal opinion is that such OS should be unsupported unless there
-	  is an active maintainer.  [ruby-core:37352]
-
-	* test/coverage/test_coverage.rb: ditto.
-
-Mon Jul  4 07:14:12 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* thread_pthread.c (get_stack): the return address of get_stack
-	  must be the highest address of the current thread's stack.
-
-Mon Jul  4 06:37:22 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/intern.h, thread_pthread.c (rb_reserved_fd_p,
-	  RB_RESERVED_FD_P): added.  This C API is to limit to access
-	  fds which are used by RubyVM internal.  In this version of
-	  CRuby, return 1 if fd is communication pipe.
-	  If your application needs to close all file descriptors to
-	  present resource leak, skip internal fds using this C API.
-	  We also define a macro RB_RESERVED_FD_P(fd).  So you can write
-	    #ifndef RB_RESERVED_FD_P
-	    #define RB_RESERVED_FD_P(fd) 0
-	    #endif
-	  for Ruby 1.9.2 or previous version to write compatible extensions.
-	  See [ruby-core:37727]
-
-	* thread_win32.c (rb_reserved_fd_p): added (return 0 for any fds).
-
-	* io.c (rb_io_initialize): raise ArgumentError if given fd is reserved by Ruby.
-
-Sun Jul  3 23:43:56 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/extmk.rb (extmake): suppresses outputs from extconf.rb.
-	  (extmake) warns a failure in extconf.rb.
-
-Sun Jul  3 13:44:51 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_reject_bang): should not remove elements which are
-	  not yielded.  [Bug #2545]
-
-Sun Jul  3 06:10:26 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (get_stack): pthread_attr_getstack() doesn't
-	  return stack start address, but stack base address. Thus,
-	  we need to add stack size for getting stack start address.
-	  And, we don't have to decrease guard size twice.
-	* thread_pthread.c (thread_start_func_1): don't use inaccurate
-	  stack start guess if native_thread_init_stack() can be used.
-	  [Bug #1813] [ruby-core:24540]
-
-Sun Jul  3 04:50:08 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (get_stack): add to a care of guard page on Mac
-	  OS X. [Bug #1813] [ruby-core:24540]
-	* signal.c (ruby_signal): SIGBUS use alternative stack too.
-	* signal.c (sigbus): On Mac, thread stack overflow makes SIGBUS
-	  instead of SIGSEGV. thus, added stackoverflow check.
-	* signal.c (default_handler): get rid of compilation warning.
-	* signal.c (Init_signal): ditto.
-
-Sat Jul 02 08:59:20 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_ocsp.rb
-	* test/openssl/test_x509_cert.rb: Perform SHA-256 tests only if
-	  supported by the available OpenSSL version. Versions < 0.9.8 don't
-	  support it. [ruby-core:37724]
-
-Sat Jul  2 07:17:45 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_reject_bang, rb_ary_delete_if): rejected
-	  elements should be removed.  fixed [Bug #2545]
-
-Sat Jul  2 01:57:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* NEWS: remove a description of Kernel#respond_to? because it has
-	  been reverted at revision 28564.
-
-Sat Jul  2 00:58:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* NEWS: describe a change of multiplication of Bignum.
-
-Fri Jul  1 18:52:31 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_app_erb.rb: increase loop count. too short
-	  measurement time makes less accuracy.
-	* benchmark/bm_app_factorial.rb: ditto.
-	* benchmark/bm_app_mandelbrot.rb: ditto.
-	* benchmark/bm_app_strconcat.rb: ditto.
-
-	* benchmark/bm_io_file_create.rb: ditto.
-	* benchmark/bm_io_file_read.rb: ditto.
-	* benchmark/bm_io_file_write.rb: ditto.
-
-	* benchmark/bm_so_concatenate.rb: ditto.
-	* benchmark/bm_so_lists.rb: ditto.
-	* benchmark/bm_so_matrix.rb: ditto.
-	* benchmark/bm_so_random.rb: ditto.
-	* benchmark/bm_so_sieve.rb: ditto.
-
-	* benchmark/bm_vm_thread_mutex1.rb: ditto.
-	* benchmark/bm_vm_thread_mutex2.rb: ditto.
-	* benchmark/bm_vm_thread_mutex3.rb: ditto.
-
-	* benchmark/bm_vm1_block.rb: cleanup.
-	* benchmark/bm_vm1_const.rb: cleanup.
-	* benchmark/bm_vm1_ensure.rb: cleanup.
-	* benchmark/bm_vm1_ivar.rb: cleanup.
-	* benchmark/bm_vm1_length.rb: cleanup.
-	* benchmark/bm_vm1_neq.rb: cleanup.
-	* benchmark/bm_vm1_not.rb: cleanup.
-	* benchmark/bm_vm1_rescue.rb: cleanup.
-	* benchmark/bm_vm1_simplereturn.rb: cleanup.
-	* benchmark/bm_vm1_swap.rb: cleanup.
-
-	* benchmark/bm_vm2_array.rb: cleanup.
-	* benchmark/bm_vm2_case.rb: cleanup.
-	* benchmark/bm_vm2_defined_method.rb: cleanup.
-	* benchmark/bm_vm2_eval.rb: cleanup.
-	* benchmark/bm_vm2_method.rb: cleanup.
-	* benchmark/bm_vm2_mutex.rb: cleanup.
-	* benchmark/bm_vm2_poly_method.rb: cleanup.
-	* benchmark/bm_vm2_poly_method_ov.rb: cleanup.
-	* benchmark/bm_vm2_proc.rb: cleanup.
-	* benchmark/bm_vm2_regexp.rb: cleanup.
-	* benchmark/bm_vm2_send.rb: cleanup.
-	* benchmark/bm_vm2_super.rb: cleanup.
-	* benchmark/bm_vm2_unif1.rb: cleanup.
-	* benchmark/bm_vm2_zsuper.rb: cleanup.
-
-	* benchmark/bm_vm_thread_alive_check1.rb: cleanup.
-
-Fri Jul  1 15:23:00 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix: Add LUP decomposition
-
-Fri Jul  1 15:21:14 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Allow non integer exponents for Matrix#**
-
-Fri Jul  1 15:13:25 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix: Add Eigenvalue Decomposition
-
-Fri Jul  1 15:10:22 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix: Add Matrix#round
-
-Fri Jul  1 11:41:12 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (tr_trans): free heap ptr when the str is not embedded.
-	  patched by Eric Wong. [Bug #4956] [ruby-core:37708]
-
-Fri Jul  1 11:07:43 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (do_select): fix memory leak.
-	  Patch by Eric Wong. Thank you! [Bug #4953] [ruby-core:37702]
-
-Fri Jul  1 08:21:28 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_getivar): check vm state version
-	  to invalidate inline cache (ivar index).
-	  fixes Bug #4926.
-
-	* vm_insnhelper.c (vm_setivar): ditto.
-
-Fri Jul  1 08:03:15 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c, thread_pthread.c (WRITE_CONST): suppress warnings
-	  `ignoring return value'.
-
-Fri Jul  1 06:41:36 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_threadptr_check_signal): only wake up main thread.
-
-	* thread.c (rb_threadptr_execute_interrupts_common): check signal
-	  delivery if it is main thread.
-	  fixes [ruby-dev:44005] [Ruby 1.9 - Bug #4950]
-
-	* bootstraptest/test_fork.rb: add a test for above.
-
-	* signal.c (rb_get_next_signal): skip if signal_buff is empty.
-	  (check signal_buff.size first)
-
-	* vm_core.h: remove unused variable rb_thread_t::exec_signal.
-
-	* thread.c (rb_thread_check_trap_pending): check
-	  rb_signal_buff_size() because rb_thread_t::exec_signal
-	  is no longer available.
-
-Fri Jul  1 03:28:25 2011  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (Init_class_hierarchy): should name BasicObject
-	  explicitly.
-
-	* variable.c (rb_const_defined_0): should not check for
-	  superclasses as const_get.
-
-Fri Jul  1 03:24:03 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: mathn is still alive (should die soon).
-
-Thu Jun 30 23:50:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* misc/ruby-mode.el (ruby-indent-beg-re): Fix broken regular
-	  expression.  Fixes #4546
-
-Thu Jun 30 23:43:30 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl.c/.h: Added ossl_x509_name_sk2ary.
-	* ext/openssl/ossl.c: Replaced ossl_x509_ary2k by generic macro to
-	  simplify future conversions.
-	* ext/openssl/ossl_ssl.c: Implement SSLSocket#client_ca.
-	* test/openssl/test_ssl.rb: Add test for SSLSocket#client_ca.
-	  Thanks to Ippei Obayashi for providing the patch!
-	  [ Ruby 1.9 - Feature #4481 ] [ruby-core:35461]
-
-Thu Jun 30 22:38:58 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm2_defined_method.rb: added to measure performance of
-	  bmethod (method defined by define_method()).
-
-Thu Jun 30 22:17:04 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_call_bmethod): fix to hook call/return event
-	  for methods defined by define_method().  fixes Bug #4613.
-
-	* thread.c (call_trace_proc): Fix to skip if class is not given (0).
-	  Note that ID and Class object are passed for call/return event
-	  if the called method was defined by define_method().
-	  If you are author of tracer/profiler/debugger, this may be an
-	  important change.  You should check passed class as zero or
-	  non-zero instead of checking the event type.
-
-	* test/ruby/test_settracefunc.rb: add a test for above.
-
-Thu Jun 30 21:18:35 2011  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* configure.in: Add warnflags for XL/C on AIX during configure
-	  to avoid [Bug #3971]. See [ruby-core:32859]
-
-Thu Jun 30 21:16:04 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (m_ajd): refers a constant.
-
-Thu Jun 30 20:54:25 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	  * ext/io/console/io-console.gemspec: spin-off gem for 1.9.2.
-
-Thu Jun 30 20:36:23 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: trivial changes.
-
-Thu Jun 30 20:12:36 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_module.rb: tests for [Bug #3422] and [Bug #3423].
-
-Thu Jun 30 20:03:39 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: modified doc.
-
-Thu Jun 30 19:09:19 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (thread_timer): ignore unknown errno.
-	  (we observed that select(2) was canceled by errno=514 on
-	  boron == Linux/Xen environment)
-
-Thu Jun 30 17:33:25 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/objspace/objspace.c (ObjectSpace.count_tdata_objects):
-	  Fix rdoc.  Fixes Bug #3892.
-
-	* ext/objspace/objspace.c (ObjectSpace.count_tdata_objects):
-	  Change key type if the klass of a object is zero (internal object).
-	  Read rdoc for details.
-
-	* internal.h: export rb_objspace_data_type_name().
-
-Thu Jun 30 17:25:08 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (ping_signal_thread_list, thread_timer):
-	  fix to keep polling state if there are any ping-tasks.
-
-Thu Jun 30 12:25:34 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (rb_thread_create_timer_thread): allocate
-	  machine stack for the timer thread at least 12KB.  FreeBSD 8.2
-	  AMD64 causes machine stack overflow (SIGSEGV) only with
-	  PTHREAD_STACK_MIN (maybe defined as 2KB).
-
-Thu Jun 30 09:36:37 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/weakref.rb:  Attach documentation to WeakRef and add missing
-	  documentation
-
-Thu Jun 30 09:30:14 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/yaml.rb:  Document toplevel YAML and YAML::ENGINE to describe
-	  Psych vs Syck engines.
-
-Thu Jun 30 09:21:52 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/cmath.rb:  Hide handle_no_method_error from RDoc.
-	* error.c:  Document or hide undocumented error classes.
-
-Thu Jun 30 07:49:04 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* hash.c:  Document ENV
-
-Thu Jun 30 06:37:43 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): ensure RUBYLIB_PREFIX stored
-	  before RUBYLIB, even if MANGLED_PATH is enabled.  fixed #1679.
-	  MANGLED_PATH is disabled by the default and will be removed
-	  completely in the future.
-
-Thu Jun 30 06:32:21 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/drb/drb.rb:  Hide deprecated toplevel DRb constants.
-
-Thu Jun 30 06:17:02 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cmath.rb (CMath.log): second argument: b can be nil.
-
-Thu Jun 30 06:23:28 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* thread.c (ruby_thread_s_pass):  Fix typo.
-
-Thu Jun 30 06:16:53 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Update to RDoc 3.8 which contains fixes for documentation
-	  in trunk.
-
-Thu Jun 30 02:53:26 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_threadptr_execute_interrupts_common): remove
-	  meaningless native_thread_yield(). It never close a race.
-
-Thu Jun 30 02:41:47 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_schedule_limits): minor optimization.
-	  eliminate machine context saving when running time is enough small.
-
-Thu Jun 30 02:28:11 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_schedule_rec): move interrupt_flag check to
-	  rb_thread_schedule().
-	  And also rename to rb_thread_schedule_limits() and remove
-	  sched_depth argument. It's no longer called recursive.
-	* thread.c (rb_thread_schedule): add to check interrupt_flag as
-	  above explained.
-
-	* thread.c (rb_threadptr_execute_interrupts_rec): rename to
-	  rb_threadptr_execute_interrupts_common() and remove sched_depth
-	  argument. It's no longer called recursive.
-
-	* thread.c (rb_thread_sleep): adapt the renaming.
-	* thread.c (rb_threadptr_execute_interrupts): ditto.
-	* thread.c (rb_thread_execute_interrupts): ditto.
-
-Thu Jun 30 01:31:33 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (thread_s_pass): change RDoc description and remove
-	  a sample code. The actual implementation never behave as explained by
-	  an example. It's a documentation bug.
-
-Thu Jun 30 00:54:33 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_stop): change RDoc sample code. The old
-	  example is buggy and may cause deadlock. The patch is
-	  suggested by Heesob Park <phasis@gmail.com>. Thank you!
-	  [Bug #3606][ruby-core:31454]
-
-Thu Jun 30 00:49:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_wakeup): change RDoc sample code. The old
-	  example is buggy and may not display anything by a race.
-	  The patch is suggested by Heesob Park <phasis@gmail.com>.
-	  Thank you! [Bug #3606][ruby-core:31454]
-
-Thu Jun 30 00:43:33 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_run): change RDoc. The old example is buggy
-	  and may cause deadlock. The patch is suggested by Heesob Park
-	  <phasis@gmail.com>. Thank you! [Bug #3606][ruby-core:31454]
-
-Thu Jun 30 00:30:15 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/cmath.rb: make same exception for Math. fix [Bug #3137].
-
-Thu Jun 30 00:03:20 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb/completion.rb: complement correctly string literal. fix
-	  [Bug #1145].
-
-Wed Jun 29 23:42:51 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: avoided using timev.
-	* ext/date/date_strftime.c: ditto.
-	* ext/date/date_tmx.h: ditto.
-
-Wed Jun 29 23:17:57 2011  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/openssl/ossl.h (OPENSSL_SYS_WIN32): support for mingw(msys).
-
-Wed Jun 29 23:09:14 2011  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/tk/extconf.rb (intptr_t, uintptr_t): support for the latest ActiveTcl with mingw.
-
-Wed Jun 29 22:49:10 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb/cmd/help.rb: support RDoc 3.7. fix [Bug #3760].
-
-Wed Jun 29 22:04:14 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* lib/tracer.rb: Tracer.on only if required by -r command-line option.
-	  and consider --disable-gems option.
-	* test/test_tracer.rb: add tests for it.
-
-Wed Jun 29 13:55:36 2011  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_const_get_0): should not look for superclasses if
-	  the second optional argument is given for #const_get().
-	  fix [Bug #3422] [Bug #3423]
-
-Wed Jun 29 12:07:27 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* math.c:  Attach documentation for Math.
-	* object.c:  Document NIL, TRUE, FALSE.
-	* io.c:  Improve grammar in ARGF comment.  Document STDIN/OUT/ERR.
-	  Document ARGF global constant.
-	* lib/rake:  Hide deprecated toplevel constants from RDoc (import from
-	  rake trunk).
-	* lib/thwait.rb:  Document ThWait.
-	* lib/mathn.rb:  Hide Math redefinition from RDoc
-	* lib/sync.rb:  Add a basic comment for Sync_m, Synchronizer_m, Sync,
-	  Synchronizer.
-	* parse.y:  Document SCRIPT_LINES__.
-	* hash.c:  Document ENV class and global constant.
-	* vm.c:  Document TOPLEVEL_BINDING.
-	* version.c:  Document RUBY_* constants.
-	* ruby.c:  Document DATA and ARGV.
-
-Wed Jun 29 10:13:12 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Matrix.zero can build rectangular matrices.
-	  Vector#r should be called #magnitude
-
-Wed Jun 29 10:11:08 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Add Matrix#diagonal?, hermitian?, normal?,
-	  orthogonal?
-	  permutation?, symmetric?, {lower|upper}triangular?, unitary?, zero?
-
-Wed Jun 29 10:09:35 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Specialize Matrix#find_index to return [row, col]
-	  and accept the same optional argument as #each
-
-Wed Jun 29 10:07:32 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Matrix#each{_with_index} can iterate over a subset
-	  of the Matrix
-
-Wed Jun 29 06:21:02 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (native_stop_timer_thread): skip to close
-	  communication pipe to avoid timing bug (process termination timing).
-	  The communication pipe will closed by OS.
-
-Wed Jun 29 06:09:54 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* error.c (rb_async_bug_errno): async-safe bug report function.
-	  In timer thread, signal handler should use it.
-	  The patch is contributed by Eric Wong <normalperson@yhbt.net>.
-	  Refs: [ruby-core:37644] and [ruby-core:37647]
-
-	* thread_pthread.c: use rb_async_bug_errno().
-	  And replace all fprintf() to write().
-
-	* internal.h (rb_async_bug_errno): add decl. of above func.
-
-Tue Jun 28 23:46:08 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/tracer.rb: count only non-internal libraries in stack trace,
-	  ignoring custom_require.
-
-Tue Jun 28 21:44:58 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb/ruby-lex.rb: recognize '\char' in ruby statement.
-
-Tue Jun 28 20:39:29 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* lib/debug.rb (var_list): Command 'var *' did not work on 1.9(!).
-	  global_variables, local_variables, and instance_variables returns
-	  Symbols from 1.9 and need to stringify before evaling it.
-	  See #4931.
-
-Tue Jun 28 19:23:01 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* signal.c: Now, USE_TRAP_SIGMASK depend on HAVE_PTHREAD_SIGMASK.
-	  The code have already depended on pthread_sigmask since r27464.
-
-Tue Jun 28 15:09:21 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/benchmark.rb: merge eregon/benchmark.
-	  https://github.com/eregon/ruby/tree/benchmark
-	  patched by Benoit Daloze. [ruby-core:37593] [Bug #4940]
-
-	* lib/benchmark (Benchmark#bmbm): bmbm should be consistent with bm
-	  for the return value.
-
-	* test/benchmark: remove preemptive test instead of skipping
-	  I removed the preemptive test I wrote for Feature #4197.
-	  I'll add it back when the implementation will be able to satisfy it.
-
-	* lib/benchmark (Benchmark#bmbm): remove useless explicit call,
-	  #format is an alias of #to_s test/benchmark: add a test for
-	  format of long time.
-
-	* lib/benchmark: fix label width: always add 1 to ensure there is a
-	  space delimiter even with times over 100s
-	  When I asked for Feature #4197, I wanted to make delimiting spaces
-	  consistent for #bm and #bmbm.
-	  But with times over 100s, the output contains no space between the
-	  label and the first time (user).
-	  Now both ensure there is always a space, even if that means 3 spaces
-	  with times under 10s (because it is formatted as %10.6f)
-
-	* test/benchmark: let labels be a constant
-	  lib/benchmark (Benchmark#realtime): avoid creating an unused Proc
-	  lib/benchmark (Benchmark#benchmark): use ensure clause to restore
-	  STDOUT.sync, as in #bmbm
-
-Tue Jun 28 13:41:51 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (native_stop_timer_thread): fixed commit miss of
-	  r32244.  grep sources before changing the signature of a function.
-
-Tue Jun 28 11:49:14 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (consume_communication_pipe):
-	  Make "buff" as static.  (Maybe) "buff" can be shared between
-	  any caller (any threads) because no one use the read values.
-	  "buff" (1024 byte) on stack may cause stack overflow on
-	  several environment (we found a crash on FreeBSD).
-	  And remove const value "buff_size", and define CCP_READ_BUFF_SIZE
-	  macro.
-
-Tue Jun 28 11:45:30 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rake:  Update rake to fix some bugs and hide deprecated features
-	  from RDoc.
-	* lib/rake/version.rb:  Bump version to 0.9.2.1 to distinguish it from
-	  the released version.
-	* NEWS:  ditto
-
-Tue Jun 28 11:17:28 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Update to RDoc 3.7 (final)
-	* NEWS:  ditto
-
-Tue Jun 28 10:18:42 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* process.c (rb_daemon): fix wrong #endif position.
-
-Tue Jun 28 07:50:32 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* object.c (Init_Object):  Teach RDoc what Init_class_hierarchy does to
-	  hook up ri for BasicObject, Object, Module and Class.
-
-Tue Jun 28 05:03:32 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* thread.c (rb_thread_local_aref): RDoc fix. Thread#[] example
-	  had a race. See #4480.
-
-Tue Jun 28 01:22:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigMath_s_log): move BigMath.log from
-	  bigdecimal/math.rb.
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb: ditto.
-
-	* test/bigdecimal/test_bigdecimal.rb: move test for BigMath.log from
-	  test/bigdecimal/test_bigmath.rb.
-
-	* test/bigdecimal/test_bigmath.rb: ditto.
-
-Tue Jun 28 01:19:52 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb/ruby-lex.rb: fix [Bug #4232].
-
-Tue Jun 28 00:14:13 2011  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: fix [Bug #4409]. add DRbServer#here?.
-
-	* test/drb/test_drb.rb: ditto.
-
-	* test/drb/drbtest.rb: ditto.
-
-	* test/drb/ut_eq.rb: ditto.
-
-Tue Jun 28 00:08:43 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb/workspace.rb: fix BUG#4793.
-
-Mon Jun 27 22:06:12 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (consume_communication_pipe): don't use C99
-	  style variable length array.
-
-Mon Jun 27 22:04:27 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (consume_communication_pipe): change return
-	  type to void. caller doesn't use it.
-
-Mon Jun 27 21:29:50 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.h (rb_global_vm_lock_struct): add volatile to
-	  gvl->waiting. now thread_timer() access it w/o lock.
-
-Mon Jun 27 21:16:11 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c: s/__gvl_acquire/gvl_acquire_common/ and
-	  s/__gvl_release/gvl_release_common/.
-
-Mon Jun 27 11:41:47 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* thread_pthread.c (rb_thread_create_timer_thread):
-	  the type of return value of write(2) is ssize_t.
-
-Mon Jun 27 09:57:02 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (rb_thread_create_timer_thread):
-	  Fixes missing initialization of oflags.
-
-Mon Jun 27 09:07:42 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c: Stop polling in the timer thread when there are
-	  no waiting thread.  If there are 2 or more runnable threads,
-	  the timer thread does polling.  Avoid polling makes power save
-	  for several computers (0.2W per a Ruby process, when I measured).
-	  If outside-event such as signal or Thread#kill was occurred
-	  when the timer thread does not do polling, then wake-up
-	  the timer thread using communication-pipe (the timer thread
-	  waits this communication-pipe with select(2)).
-	  The discussion about this modification can be found from the post
-	  [ruby-core:33456] and other related posts.
-	  Note that Eric Wong and KOSAKI Motohiro give us the huge
-	  contributions for this modification.  Thanks.
-
-	* thread_pthread.c (rb_thread_wakeup_timer_thread): add a function.
-	  This function wakes up the timer thread using communication-pipe.
-
-	* thread.c (rb_thread_stop_timer_thread): add a parameter which
-	  specify closing communication-pipe or not.
-
-	* thread.c (rb_thread_terminate_all): do not stop timer thread here
-	  (ruby_cleanup() terminate timer thread).
-
-	* signal.c: wake up timer thread using
-	  rb_thread_wakeup_timer_thread() from signal handler.
-
-	* eval.c (ruby_cleanup): use rb_thread_stop_timer_thread(1).
-
-	* process.c: use rb_thread_stop_timer_thread(0)
-	  (reuse communication-pipe).
-
-	* thread_win32.c (rb_thread_wakeup_timer_thread): add a dummy
-	  function.
-
-	* vm_core.h: add and fix decl. of functions.
-
-Mon Jun 27 08:01:19 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_parse.c: should use ALLOCA_N.
-
-Mon Jun 27 01:34:18 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/etc/test_etc.rb (TestEtc#test_get{pw,gr}nam): skip entries
-	  start with + sign, which means NIS.  these are returned in the
-	  case that passwd and group entries in /etc/nsswitch.conf are set
-	  to use "nis" explicitly on Debian.  fixed #3683
-
-Mon Jun 27 00:44:53 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (rb_parser_end_seen_p): fix documentation about return
-	  value. patched by Sho Hashimoto. [Bug #4511]
-
-Mon Jun 27 00:40:47 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* hash.c (rb_hash_reject): add documentation that Hash#reject
-	  without block returns enumerator.
-	  patched by Michael Edgar [Bug #4847] [ruby-core:36800]
-
-Sun Jun 26 23:49:21 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/test_switch_hitter.rb: added a test.
-
- Sun Jun 26 22:21:23 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: refactoring.
-
-Sun Jun 26 18:03:30 2011  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* parse.y: comma at the end of line is no longer allowed.
-	  A patch from Yukihiro Matsumoto  <matz AT ruby-lang.org>.
-	  (fixed #3456).
-
-Sun Jun 26 13:35:35 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm_dump.c (rb_vm_bugreport): change CrashReporter suggestion messages
-	  on Mac. It should be placed after "-- C level backtrace" line.
-	  Suggested by Endoh-san.
-
-	  <before>
-	  -- See Crash Report log file under ~/Library/Logs/CrashReporter or ---------
-	  -- /Library/Logs/CrashReporter, for the more detail of ---------------------
-	  -- C level backtrace information -------------------------------------------
-
-	<after>
-	  -- C level backtrace information -------------------------------------------
-
-	     See Crash Report log file under ~/Library/Logs/CrashReporter or
-	     /Library/Logs/CrashReporter, for the more detail of.
-
-Sun Jun 26 10:08:28 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/extconf.rb
-	* ext/openssl/ossl_missing.h/.c: add ASN1_put_eoc if missing.
-
-	* ext/openssl/ossl_asn1.c: introduce ossl_asn1_object_size and
-	  ossl_asn1_put_object to wrap functionality depending on OpenSSL
-	  version in use.
-	  Fixes	[ Ruby 1.9 - Bug #4916 ] reported by Hiroshi Nakamura.
-	  [ruby-core:37286]
-
-Sun Jun 26 01:00:15 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (date_strftime_internal): removed meaningless braces.
-	* ext/date/date_core.c (gengo): the value should be int.
-
-Sat Jun 25 23:45:30 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* vm_insnhelper.c (vm_search_superclass): avoid control frame
-	  stack overrun. currently super() in Proc created in a method
-	  defined by Module#define_method raise NoMethodError. [Bug #4881]
-	* test/ruby/test_method.rb t_super_in_proc_from_define_method):
-	  add test for it.
-
-Sat Jun 25 23:23:14 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* thread.c (sleep_forever): now Kernel#sleep don't wakeup by
-	  signal handler execution. [Bug #4072]
-
-Sat Jun 25 23:14:47 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* thread.c (rb_threadptr_check_signal): remove unnecessary th->status
-	  backup. fix race condition which may results unexpected main thread's
-	  status transition. see #4072
-
-Fri Jun 24 19:57:30 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* lib/webrick/httprequest.rb (setup_forwarded_info): Parsing request
-	  header failed when the request is from 2 or more Apache reverse
-	  proxies. It's said that all X-Forwarded-* headers will contain more
-	  than one (comma-separated) value if the original request already
-	  contained one of these headers.  Since we could use these values as
-	  Host header, we choose the initial(first) value. See #4922.
-
-	* test/webrick/test_httprequest.rb (test_forwarded): Test it.
-
-Fri Jun 24 17:06:33 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_daemon): should not start timer thread
-	  twice.  fixed Bug#4920.
-
-Fri Jun 24 15:54:14 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_shutdown): Try to shutdown SSL
-	  connection more gracefully. Call SSL_shutdown() max 4 times until it
-	  returns 1 (success). Bi-directional SSL close has several states but
-	  SSL_shutdown() kicks only 1 transition per call. Max 4 is from
-	  mod_ssl.c of Apache httpd that says 'max 2x pending + 2x data = 4'.
-	  See #4237.
-
-Fri Jun 24 07:24:37 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rake/version.rb:  Fixed VERSION to work with tool/rbinstall.rb
-	* bin/rake:  Import bin/rake from 0.9.2
-	* tool/rbinstall.rb (install):  Rake::VERSION is now in
-	  lib/rake/version.rb.  Fixes `make install`
-
-Fri Jun 24 07:11:37 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rake: Import Rake 0.9.2
-
-Fri Jun 24 00:44:15 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (c_valid_{julian,gregorian}_p): fixed the range of month.
-
-Fri Jun 24 00:14:23 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: trivial changes on text.
-
-Thu Jun 23 22:46:57 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_x509name.c: Add X509::Name#hash_old as a wrapper
-	  for X509_NAME_hash_old in OpenSSL 1.0.0. See #4805
-
-	* test/openssl/test_x509name.rb (test_hash): Make test pass with
-	  OpenSSL 1.0.0.
-
-	* NEWS: Add it.
-
-Thu Jun 23 19:30:53 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl_session.c (ossl_ssl_session_set_time): Check
-	  argument type with NUM2LONG if the arg is not a Time object.
-	  See #4919.
-
-	* ext/openssl/ossl_ssl_session.c (ossl_ssl_session_set_timeout): Check
-	  type with NUM2LONG. Time as an arg is not allowed. See #4919.
-
-	* test/openssl/test_ssl_session.rb (test_session_time,
-	  test_session_timeout): Test it.
-
-Wed Jun 23 13:30:30 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* signal.c(ruby_atomic_exchange): Fix definition style.
-
-Wed Jun 22 22:34:05 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_session_new_cb): Return 0 to
-	  OpenSSL from the callback for SSL_CTX_sess_set_get_cb().
-	  Returning 0 means to OpenSSL that the session is still valid
-	  (since we created Ruby Session object) and was not freed by us with
-	  SSL_SESSION_free(). Call SSLContext#remove_session(sess) in
-	  session_get_cb block if you don't want OpenSSL to cache the session
-	  internally.
-	  This potential issue was pointed by Ippei Obayashi. See #4416.
-
-	* test/openssl/test_ssl_session.rb (test_ctx_server_session_cb): Test
-	  it.
-
-Wed Jun 22 22:21:17 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_ssl_session.c: Respect T_BIGNUM time values. Patch by
-	  Tomoyuki Chikanaga.
-	  [ Ruby 1.9 - Bug #4919 ] [ruby-dev:43869]
-
-Wed Jun 22 21:29:25 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/socket/depend (SOCK_HEADERS): use $(top_srcdir) instead of
-	  $(topdir). sorry!
-
-Wed Jun 22 19:47:03 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* cont.c (cont_capture): add volatile.
-	  On clang -O, it is needed to avoid the optimization.
-	  With this and llvm/clang's recent fix, clang 3.0 can
-	  build ruby-trunk with -O option.
-
-	* cont.c (cont_capture): use for-loop.
-
-	* array.c (rb_ary_each): add volatile and use it.
-
-	* vm_insnhelper.c (vm_call_cfunc): ditto.
-
-Wed Jun 22 18:20:46 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_session_remove_cb):
-	  OpenSSL::SSL::SSLContext#session_remove_cb was broken. It wrongly
-	  tried to call the session_*new*_cb callback.
-
-	* test/openssl/test_ssl_session.rb (class OpenSSL): Test it.
-
-Wed Jun 22 17:37:49 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl.h: Introduced OSSL_BIO_reset macro for PEM/DER
-	  fallback scenarios.
-
-	* ext/openssl/ossl_pkey_dsa.c
-	* ext/openssl/ossl_x509req.c
-	* ext/openssl/ossl_pkey_rsa.c
-	* ext/openssl/ossl_pkey_ec.c
-	* ext/openssl/ossl_ssl_session.c
-	* ext/openssl/ossl_x509crl.c
-	* ext/openssl/ossl_pkey.c
-	* ext/openssl/ossl_pkey_dh.c
-	* ext/openssl/ossl_x509cert.c
-	* ext/openssl/ossl_pkcs7.c: Use OSSL_BIO_reset.
-
-	* ext/openssl/ossl_ssl.c
-	* ext/openssl/ossl_cipher.c
-	* ext/openssl/ossl_pkey_ec.c
-	* ext/openssl/ossl_pkcs12.c
-	* ext/openssl/ossl_ssl_session.c: Replace rb_raise occurrences by
-	  ossl_raise. This automatically flushes OpenSSL's error queue.
-
-	* ext/openssl/ossl_pkcs7.c: Raise error if DER fallback for parsing
-	  fails.
-
-	* test/openssl/test_pkey_ec.rb
-	* test/openssl/test_pkey_dsa.rb
-	* test/openssl/test_pkey_rsa.rb: Add assertions that OpenSSL.errors is
-	  empty.
-
-	* test/openssl/test_pkey_rsa.rb: Remove initial OpenSSL.errors call in
-	  test_new.
-	  [ Ruby 1.9 - Bug #4885 ] [ruby-core:37134]
-
-Wed Jun 22 15:01:24 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_ssl.c: Use SSL_MODE_RELEASE_BUFFERS if available.
-	  Thanks, Eric Wong, for providing the patch.
-	  [ Ruby 1.9 - Feature #4672 ] [ruby-core:36127]
-
-Wed Jun 22 14:47:53 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_buffering.rb
-	* test/openssl/test_pkcs12.rb: Inherit from Test::Unit::TestCase
-	  instead of MiniTest::Unit::TestCase. [ruby-core:37275]
-
-Wed Jun 22 12:41:03 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl_session.c (ossl_ssl_session_to_der):
-	  OpenSSL::SSL::Session#to_der was broken. Fix buffer handling.
-
-	* test/openssl/test_ssl_session.rb (test_session): Test it.
-
-Wed Jun 22 12:38:52 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* test/openssl/test_ssl_session.rb: Split out SSL::Session related
-	  tests from test_ssl.rb
-
-Wed Jun 22 03:20:52 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: Fix cyclic references of
-	  objects.  Thanks to CvX for reporting the bug and a test case.
-	* test/psych/test_object.rb: test for cyclic object references.
-
-Wed Jun 22 02:39:54 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP.post_form): Do not ignore query part of
-	  the given URI to post. See #655.
-
-	* test/net/http/test_http.rb, test/net/http/utils.rb: Test it.
-
-Wed Jun 22 01:28:13 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* test/openssl/test_x509store.rb (test_set_errors): Redhat is
-	  distributing a patched version of OpenSSL that allows multiple CRL
-	  for a key (multi-crl.patch.) Make test pass on such env. See #4122,
-	  #4554.
-
-Tue Jun 21 21:50:37 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* lib/webrick/httpresponse.rb (HTTPResponse#setup_header): Close
-	  HTTP/1.1 connection when returning an IO object as response body
-	  without setting HTTPResponse#chunked to true. See #855 no.1.
-
-	* test/webrick/test_httpserver.rb: Test it.
-
-Tue Jun 21 21:27:34 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* internal.h: move rb_thread_io_blocking_region() declaration
-	  from intern.h to internal.h. It's still experimental API and
-	  need more discussion. [ruby-dev:43698]
-	* include/ruby/intern.h: ditto.
-
-	* ext/socket/rubysocket.h: include internal.h.
-	* ext/socket/depend: add internal.h dependency.
-	* ext/socket/extconf.rb: add $INCFLAGS to topdir.
-
-Tue Jun 21 20:38:47 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (datetime_s_*): canonicalize 24 o'clock.
-
-Tue Jun 21 19:46:23 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_thread.rb (TestThread#test_priority): enable
-	  this test again. Current GVL respect thread priority rather
-	  than past.
-
-Tue Jun 21 13:25:35 2011  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c (readline_getc): applied a patch in
-	  #3827 by by Akio Tajima <artonx AT yahoo.co.jp>. (see #3827)
-
-Tue Jun 21 13:16:31 2011  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/extconf.rb: fixed bug, specify --disable-libedit
-	  then disable libedit, does not specify then check readline and
-	  libedit if failed checking readline. (fixes #3375)
-
-Mon Jun 20 22:52:07 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (before_exec): use sig_do_nothing instead of SIG_DFL
-	  for avoiding a race.
-	* process.c (sig_do_nothing): new function.
-
-Mon Jun 20 21:31:03 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (thread_timer): rename timeout_10ms to
-	  time_quantum. it's no longer 10ms.
-
-Mon Jun 20 18:46:02 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_cipher.c, ext/openssl/lib/openssl/cipher.rb:
-	  Documentation fix by Ippei Obayashi. See #4419.
-
-Mon Jun 20 15:41:33 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* lib/webrick/cookie.rb (WEBrick::Cookie.parse): Revert r31228.
-	  r31228 was for allowing the 'Cookie:' header which did not have no
-	  SP after ';' for separating cookie-pairs but RFC6265 requires single
-	  SP after ';' there.  We allow multiple SPs here for compatibility
-	  with older WEBrick version.
-
-	* test/webrick/test_cookie.rb: Test it.
-
-Sun Jun 19 13:31:26 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* NEWS: Introduce --hide-skip on test/unit.
-
-Sun Jun 19 10:05:16 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit/parallel.rb: Override Test::Unit::TestCase#on_parallel_worker?
-	  only when $0 == __FILE__.
-
-	* lib/test/unit/parallel.rb: Run Test::Unit::Worker.run only when
-	  $0 == __FILE__.
-
-Sat Jun 18 23:59:24 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (fill_cbuf): finish reading at EOF, and the readconv has
-	  been cleared by another thread while io_fillbuf() is waiting at
-	  select().  a patch in [ruby-core:37197] by Hiroshi Shirosaki
-	  <h.shirosaki AT gmail.com>.  fixed #3840
-
-Sat Jun 18 21:36:29 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c: remove GVL_DEBUG
-
-Sat Jun 18 21:32:02 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm.c, vm_core.h (rb_vm_stack_to_heap): remove const.
-	  It makes compilations warnings.
-
-Sat Jun 18 18:54:15 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_core.h (rb_vm_stack_to_heap): fix "const" place.
-
-Sat Jun 18 17:23:38 2011  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c, hash.c, load.c, proc.c, range.c, thread.c, time.c: don't
-	  declare internal functions.
-
-	* internal.h, vm_core.h: declare internal functions.
-
-	* array.c: include internal.h.
-
-	* common.mk: update dependency for array.o.
-
-Sat Jun 18 13:39:33 2011  Tanaka Akira  <akr@fsij.org>
-
-	* internal.h: declarations declared in include/ruby/*.h removed.
-
-Sat Jun 18 12:42:17 2011  Tanaka Akira  <akr@fsij.org>
-
-	* method.h, internal.h iseq.h: declare internal functions.
-
-	* compile.c, eval.c, iseq.c, object.c, parse.y, proc.c, process.c,
-	  thread.c, vm.c, vm_eval.c, vm_insnhelper.c, vm_method.c: don't
-	  declare internal functions.
-
-	  Note that rb_method_entry_eq() is defined in vm_method.c but
-	  there was a declaration in proc.c with different const-ness.
-	  Now it is declared in method.h with same const-ness to the
-	  definition.
-
-	* object.c (rb_mod_module_exec): don't declare functions declared in
-	  include/ruby/intern.h.
-
-Sat Jun 18 12:05:08 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/backward/classext.h: for evil gems.  fixed #4803
-
-Sat Jun 18 11:12:13 2011  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: update dependencies.
-
-Sat Jun 18 11:09:03 2011  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: suppress warnings.
-
-Sat Jun 18 10:22:39 2011  Tanaka Akira  <akr@fsij.org>
-
-	* internal.h: declare more internal functions.
-
-	* iseq.h (rb_method_get_iseq): declared.
-
-	* compile.c, eval.c, eval_error.c, iseq.c, parse.y, proc.c, range.c,
-	  ruby.c, time.c, util.c, vm.c: don't declare internal functions.
-
-	* eval.c, parse.y, thread_pthread.c: non-existing function declarations
-	  removed.
-
-Sat Jun 18 08:12:54 2011  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependencies updated.
-
-	* tool/update-deps: new file to assist update dependencies in
-	  common.mk.
-
-Sat Jun 18 07:27:27 2011  Tanaka Akira  <akr@fsij.org>
-
-	* internal.h: declare internal functions here.
-
-	* node.h: declare NODE dependent internal functions here.
-
-	* iseq.h: declare rb_iseq_t dependent internal functions here.
-
-	* vm_core.h: declare rb_thread_t dependent internal functions here.
-
-	* bignum.c, class.c, compile.c, complex.c, cont.c, dir.c, encoding.c,
-	  enumerator.c, error.c, eval.c, file.c, gc.c, hash.c, inits.c, io.c,
-	  iseq.c, load.c, marshal.c, math.c, numeric.c, object.c, parse.y,
-	  proc.c, process.c, range.c, rational.c, re.c, ruby.c, string.c,
-	  thread.c, time.c, transcode.c, variable.c, vm.c,
-	  tool/compile_prelude.rb: don't declare internal functions declared
-	  in above headers.  include above headers if required.
-
-	  Note that rb_thread_mark() was declared as
-	  void rb_thread_mark(rb_thread_t *th) in cont.c but defined as
-	  void rb_thread_mark(void *ptr) in vm.c.  Now it is declared as
-	  the later in internal.h.
-
-Sat Jun 18 02:36:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpNewRbClass): fix type of the 2nd
-	  argument.
-
-	* ext/bigdecimal/bigdecimal.h: ditto.
-
-Sat Jun 18 02:30:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigMath_s_exp): move BigMath.exp from
-	  bigdecimal/math.rb.
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb: ditto.
-
-	* test/bigdecimal/test_bigdecimal.rb: move test for BigMath.exp from
-	  test/bigdecimal/test_bigmath.rb.
-
-	* test/bigdecimal/test_bigmath.rb: ditto.
-
-Sat Jun 18 00:20:54 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: do not define wnum[01].
-
-Fri Jun 17 18:57:36 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): fix return value of obj[a,*b]=c.
-
-Fri Jun 17 13:09:45 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/curses/curses.c:  Clean up documentation.
-
-Fri Jun 17 09:25:14 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/curses/curses.c:  Document curses constants.  Patch by Vincent
-	  Batts.  [Ruby 1.9 - Bug #4880]
-
-Fri Jun 17 09:11:05 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* object.c:  Document Module#method_added and #method_removed.
-	  Patch by Bryce Kerley.  [Ruby 1.9 - Feature #4867]
-
-Fri Jun 17 08:50:16 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* io.c:  Improve documentation of IO and File open and new.
-	  Patch by Roger Pack.  [Ruby 1.9 - Bug #4790]
-
-Fri Jun 17 07:53:50 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/csv.rb:  Document #raw_encoding.  Patch by David Czarnecki.
-	  [Ruby 1.9 - Bug #4874]
-
-Fri Jun 17 07:46:50 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/benchmark.rb:  Document Benchmark::Tms#memberwise.  Patch by
-	  David Czarnecki.  [Ruby 1.9 - Bug #4873]
-
-Fri Jun 17 07:38:31 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/prettyprint.rb:  Improve documentation.  Patch by Ysiad
-	  Ferreiras.  [#4834]
-
-Fri Jun 17 07:23:03 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* array.c (rb_ary_drop):  Improve documentation.  Patch by Caley Woods.
-	  [Ruby 1.9 - Bug #4858]
-
-Fri Jun 17 06:11:31 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick/log.rb:  Improve documentation of BasicLog and Log.
-	  Patch by Olivier Brisse.  [Ruby 1.9 - Bug #4833]
-	* lib/webrick/httpstatus.rb:  Improve documentation of
-	  WEBrick::HTTPStatus.  Patch by Olivier Brisse.
-	  [Ruby 1.9 - Bug #4833]
-
-Fri Jun 17 04:48:22 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c, thread_pthread.h: remove unused variables.
-	  (native_thread_data_t::gvl_cond, native_thread_data_t::gvl_next)
-
-Thu Jun 16 14:32:31 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* time.c (rb_time_new): prevent overflow by "* 1000".
-
-Fri Jun 17 03:07:36 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm4_thread_create_join.rb,
-	  benchmark/bm_vm4_thread_mutex[1-3].rb: renamed to
-	  bm_thread_* (fix last rename).
-
-Fri Jun 17 02:26:47 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (native_thread_create): fix debug message.
-	  (add last newline)
-
-Thu Jun 16 23:40:49 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_schedule_rec): fix {UN,}LIKELY macro misuse.
-	* gc.c (rb_newobj): ditto.
-	* vm_insnhelper.c (vm_method_search): ditto.
-
-Thu Jun 16 20:06:15 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/testunit/test_parallel.rb: Fix Regexp for test.
-
-	* test/testunit/tests_for_parallel/test_third.rb: Use
-	  Test::Unit::TestCase#on_parallel_worker? for detecting worker.
-
-	* lib/test/unit/testcase.rb(Test::Unit::TestCase#on_parallel_worker?):
-	  New Method Test::Unit::TestCase#on_parallel_worker? returns true
-	  when a testcase is running on parallel worker.
-	* lib/test/unit/parallel.rb(Test::Unit::TestCase#on_parallel_worker?):
-	  ditto.
-
-Thu Jun 16 19:27:12 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* test/test_securerandom.rb: Add testcase.  This testcase does NOT aim
-	  to test cryptographically strongness and randomness.  It includes
-	  the test for PID recycle issue of OpenSSL described in #4579 but
-	  it's disabled by default.
-
-Thu Jun 16 17:55:07 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_io.rb (TestIO#test_copy_stream_socket): fix
-	  test hanging up issue. Patch by CHIKANAGA Tomoyuki.
-
-Thu Jun 16 15:17:39 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* variable.c (const_missing):  Add simple example of const_missing.
-	  Patch by Anuj Dutta.  [Ruby 1.9 - Bug #4794]
-
-Thu Jun 16 15:09:29 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/monitor.rb:  Improve documentation.  Patch by Sandor Szucs.
-	  [Ruby 1.9 - Bug #4823]
-
-Thu Jun 16 14:54:09 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick/utils.rb: Document WEBrick::Utils.  Patch by Olivier
-	  Brisse.  [Ruby 1.9 - Bug #4819]
-
-Thu Jun 16 14:26:46 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick/httpservlet/erbhandler.rb:  Allow the ERB document to
-	  alter the content-type of the response.  [Ruby 1.9 - Bug #4685]
-
-Thu Jun 16 14:15:47 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/timeout.rb: Clarify timeout duration types.  Patch by Alf Mikula.
-	  [Ruby 1.9 - Bug #4791]
-	* lib/net/http.rb: ditto
-
-Thu Jun 16 13:25:25 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*:  Import RDoc 3.7 release candidate
-
-Thu Jun 16 11:35:09 2011  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (search_response): parses SEARCH responses from
-	  the Yahoo IMAP server correctly.  patched by Mark Nadig.  [Bug #4509]
-
-Thu Jun 16 09:12:38 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* fix for build on solaris 10.
-
-Thu Jun 16 09:08:39 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/io/console/test_io_console.rb (TestIO_Console#test_sync):
-	  fix for daemon process.
-
-Thu Jun 16 07:58:01 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/testunit/test_parallel.rb(test_ignore_tzero): Test for r32109.
-
-	* test/testunit/tests_for_parallel/test_third.rb: Use another way to
-	  detect that test is running on worker. This fixes sometimes
-	  TestParallel failing.
-
-Thu Jun 16 07:20:06 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb(Test::Unit::Runner#_run_parallel): Ignore -j0
-	  because it makes blocking forever by IO.select.
-
-Thu Jun 16 03:08:11 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/testunit/test_parallel.rb (TestParallel::TestParallelWorker#
-	  setup): now can run on Windows, probably.
-
-	* test/testunit/test_parallel.rb (TestParallel::TestParallel#setup):
-	  ditto.
-
-Thu Jun 16 03:00:26 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (do_select): Windows: no need to poll if select(2) is
-	  cancelable.
-
-	* thread_win32.c (native_fd_select): new function to make select(2)
-	  cancelable.
-
-	* thread_win32.c (rb_w32_check_interrupt): new function for checking
-	  interrupt.
-
-	* win32/win32.c (rb_w32_select_with_thread): new function. cancelable
-	  select(2).
-
-	* win32/win32.c (rb_w32_select): use above function internally.
-
-Wed Jun 15 23:30:45 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* gc.c: fix a regression by r31690 on AIX because AIX malloc
-	  return NULL if it's passed 0. But some caller don't expect it.
-	  patch by Yutaka Kanemoto. [ruby-dev:43779]
-	(vm_malloc_prepare): return calculated size.
-	(vm_xmalloc): use above result.
-	(vm_xcalloc): ditto.
-
-Wed Jun 15 23:11:35 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c: remove BLOCKING_REGION_CORE() macro. It's no longer used
-	  since r32022.
-
-Wed Jun 15 21:00:47 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_config.rb: execute based on the existence of the
-	  OpenSSL module.
-
-Wed Jun 15 12:35:11 2011  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io.rb (test_copy_stream_socket): wait a child process
-	  before SIGUSR1 handler is removed.
-
-	* test/pathname/test_pathname.rb (define_assertion): use line number
-	  for test method names.
-
-Wed Jun 15 10:37:43 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (rb_stat_rdev): use DEVT2NUM.
-
-	* file.c (rb_stat_rdev_major): ditto.
-
-	* file.c (rb_stat_rdev_minor): ditto.
-
-Wed Jun 15 05:12:59 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c (lib_eventloop_core): revert the last change (it's
-	  the part for ruby_1_8), and use rb_thread_check_ints() when RUBY_VM
-	  is defined.
-
-Wed Jun 15 04:42:47 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm3_thread_*.rb: renamed bm_vm3_thread_*.rb to
-	  benchmark/bm_vm_thread_*.rb.
-
-Wed Jun 15 04:28:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_vm4_thread_pass.rb: rename bm_vm4* to
-	  bm_vm_thread_*. suggested by ko1.
-	* benchmark/bm_vm4_pipe.rb: ditto.
-	* benchmark/bm_vm4_alive_check1.rb: ditto.
-	* benchmark/bm_vm4_pass_flood.rb: ditto.
-
-Wed Jun 15 03:52:50 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_vm4_pass_flood.rb: new benchmark for GVL fairness.
-	* benchmark/bm_vm4_alive_check1.rb: ditto.
-
-Wed Jun 15 01:27:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (gvl_yield): fix live lock issue on 1-2 cpus
-	  system. It's additional fix for r32021.
-	* thread_pthread.c (gvl_init): add switch_wait_cond.
-	* thread_pthread.h (typedef struct rb_global_vm_lock_struct): ditto.
-
-Tue Jun 14 23:16:22 2011  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (show_progress): refine verbose mode.
-	  (exec_test): ditto.
-
-Tue Jun 14 23:02:36 2011  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (show_progress): extracted from assert_check.
-	  (assert_check): use show_progress.
-	  (assert_normal_exit): ditto.
-	  (assert_finish): ditto.
-	  (flunk): ditto.
-
-Tue Jun 14 22:51:42 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/test_*.rb: added tests.
-
-Tue Jun 14 22:09:58 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: renamed some functions.
-	* ext/date/date_core.c: modified doc.
-
-Tue Jun 14 21:26:01 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* cont.c (cont_save_thread): add new utility function.
-	  rb_context_t::saved_thread.machine_stack_start and
-	  machine_stack_end should be cleared immediately after a snapshot of
-	  current thread is stored to saved_thread. [ruby-dev:43680] [Bug #4855]
-	  this change aims to get rid of unnecessary GC mark at machine stack.
-
-Tue Jun 14 19:50:49 2011  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_autoload.rb: remove temporary directory.
-
-Tue Jun 14 11:05:03 2011  Narihiro Nakamura  <narihiro@netlab.jp>
-
-	* gc.c (rb_gc_set_params): call initial_expand_heap if
-	  initial_heap_min_slots is set.
-
-Tue Jun 14 11:02:08 2011  Narihiro Nakamura  <narihiro@netlab.jp>
-
-	* gc.c: use size_t.
-
-Tue Jun 14 01:10:38 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/coverage/test_coverage.rb: add a test for restart.  a patch
-	  from Xavier Shay.  [ruby-core:36745]
-
-Tue Jun 14 01:05:10 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/coverage/coverage.c: make it restartable.  [ruby-core:36539]
-
-Mon Jun 13 23:55:40 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_schedule_rec): call gvl_yield() unconditionally.
-	* thread_pthread.c: remove HAVE_GVL_YIELD macro.
-	* thread_win32.c (gvl_yield): new. this fallback logic was moved from
-	  rb_thread_schedule_rec().
-
-Mon Jun 13 23:50:25 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/io/console/console.c (console_dev): typo.
-
-Mon Jun 13 23:38:23 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_parse_string): flush delayed token.  based on a
-	  patch by Masaya Tarui in [ruby-dev:43762].  Bug #4544
-
-	* parse.y (yylex): revert r24557.  delayed token at the end of
-	  string should be flushed already by the above change.
-
-Mon Jun 13 23:33:31 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/console/console.c (console_dev): console should be
-	  unbuffered.
-
-	* ext/io/console/console.c (console_dev): take care of no-ctty
-	  case.
-
-Mon Jun 13 23:06:12 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c: rewrite GVL completely. This fix improve some
-	  benchmark dramatically (e.g. vm3_thread_mutex result changed
-	  form 120.601sec to 3.426sec).
-	* thread_win32.c: ditto.
-	* thread_pthread.h: ditto.
-	* vm_core.h: ditto.
-	* thread.c: ditto.
-
-Mon Jun 13 23:11:52 2011  Tanaka Akira  <akr@fsij.org>
-
-	* test/socket/test_unix.rb: don't use Thread.abort_on_exception.
-
-Mon Jun 13 23:05:01 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/unixsocket.c (unix_send_io): race condition fixed.
-	  (unix_recv_io): ditto.
-	  fixed by Eric Wong.  [ruby-core:35574]
-
-	* test/socket/test_unix.rb: test added for above problem.
-
-Mon Jun 13 21:41:05 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_win32.c (native_cond_signal): remove unnecessary rb_bug().
-	  It's additional fix for r32021. [Bug #4696]
-
-Mon Jun 13 20:50:49 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_ec.rb
-	  test/openssl/test_pkey_ec.rb: merge both files into test_pkey_ec.rb.
-	  Removed redundant group instantiation from PKey tests.
-	* test/openssl/utils.rb: only create TEST_PKEY_EC_P256V1 if EC is
-	  defined.
-
-Mon Jun 13 20:28:24 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/digest.rb: remove MDC2 from test, it is not available
-	  by default in an OpenSSL installation.
-
-Mon Jun 13 20:18:55 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h, vm_insnhelper.h: move decl. of
-	  ruby_vm_global_state_version and related macros
-	  from vm_core.h to vm_insnhelper.h.
-
-	* vm.c (vm_clear_all_cache): added.  This function is called
-	  when ruby_vm_global_state_version overflows.
-	  TODO: vm_clear_all_inline_method_cache() is only place holder.
-	        We need to implement it ASAP.
-
-	* vm_method.c (vm_clear_global_method_cache): added.
-
-Mon Jun 13 19:46:21 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/cmath.rb: add new method Object#real?. fix #3137
-
-Mon Jun 13 18:52:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (is_kind_of_BigDecimal): new function to
-	  examine the whether the object is kind of BigDecimal.
-
-Mon Jun 13 18:49:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimalCmp): use GetVpValueWithPrec
-	  for Float and Rational arguments.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_new, test_cmp, test_power):
-	  add and modify tests for the above change.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimalCmp): modify coding style to
-	  match ruby's standard.
-
-Mon Jun 13 18:33:04 2011  Tanaka Akira  <akr@fsij.org>
-
-	* lib/securerandom.rb (SecureRandom.random_bytes): modify PRNG state
-	  to prevent random number sequence repetition at forked child
-	  process which has same pid.
-	  reported by Eric Wong.  [ruby-core:35765]
-
-Mon Jun 13 17:02:34 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP#use_ssl?): require 'openssl' only when
-	  https is needed. fixes r31933.
-
-Mon Jun 13 14:35:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* lib/cmath.rb (CMath.cbrt): returns the principal value of the cube
-	  root of the argument.  fix #3676
-
-	* test/test_cmath.rb (test_cbrt_returns_principal_value_of_cube_root):
-	  test for the above change.
-
-Mon Jun 13 14:17:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* lib/test/unit.rb (Test::Unit::GlobOption#non_options): fix typo.
-
-Mon Jun 13 13:04:20 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_digest.c: fix error for digests that have no oid
-	(e.g. DSS1).
-	* test/openssl/test_digest.c: add tests for this.
-
-Mon Jun 13 12:51:51 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/yaml.rb: load psych only when syck is not loaded.
-
-Mon Jun 13 12:23:39 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-Mon Jun 13 12:23:39 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/psych/lib/psych/deprecated.rb (Object#to_yaml_properties):
-	  undef to_yaml_properties before redefine it.
-
-	* ext/syck/lib/syck/rubytypes.rb: ditto.
-
-Mon Jun 13 11:30:10 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_digest.c: allow Digests to be created by sn, ln or
-	  oid.
-	* test/openssl/test_digest.rb: add tests for this.
-	  [Ruby 1.9 - Feature #4412] [ruby-core:35319]
-
-Mon Jun 13 10:54:03 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/pkey_dh.c: corrected documentation.
-	* test/openssl/utils.rb: add test key for DH.
-	* test/openssl/test_pkey_dh.rb: add tests.
-
-Mon Jun 13 10:13:08 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/pkey_dh.c: clarify difference between DH#public_key and
-	DH#pub_key in documentation.
-
-Mon Jun 13 05:50:43 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* NEWS: introduce PKey.read.
-
-Mon Jun 13 05:17:29 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_pkey.c: added PKey.read module function that allows
-	  reading arbitrary public/private keys from DER-/PEM-encoded File or
-	  string instances.
-	* ext/openssl/ossl_pkey_dh.c: improved documentation.
-	* test/openssl/utils.rb: added EC test key.
-	* test/openssl/test_pkey_rsa.rb
-	  test/openssl/test_pkey_dsa.rb: Test PKey.read. Reuse keys from
-	  OpenSSL::TestUtils.
-	* test/openssl/test_pkey_ec.rb: Created test file for EC tests.
-	  Test PKey.read.
-	  [Ruby 1.9 - Feature #4424] [ruby-core:35330]
-
-Mon Jun 13 04:42:24 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/objspace/objspace.c (total_i): fix to skip no ruby objects.
-
-Mon Jun 13 03:07:38 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/benchmark/test_benchmark.rb (capture_output):
-	  replace '-' as space. On NetBSD, subtract between two Process.times
-	  after and before the short process may return negative value like:
-	  t0=Process.times; yield; t1=Process.times; p t1.utime-t0.utime
-
-Mon Jun 13 02:40:23 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_pkey_dsa.rb: Test for DSA#syssign/sysverify.
-
-Mon Jun 13 01:59:19 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_pkey_dh.c: completed documentation.
-	* ext/openssl/ossl_pkey_dsa.c: corrected examples. Improved parameter
-	  sections.
-
-Mon Jun 13 00:25:10 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_pkey_dsa.c: completed documentation.
-
-Sun Jun 12 23:36:46 2011  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (kill_sub_thread): remove the method. [ruby-core:34185]
-
-Sun Jun 12 21:01:56 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (d_lite_marshal_load): should give converted value.
-
-Sun Jun 12 20:36:30 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: edited doc.
-
-Sun Jun 12 18:12:07 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm3_clearmethodcache.rb: added.
-
-Sun Jun 12 17:40:29 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_method.c (rb_clear_cache*): update only vm state version.
-
-	* vm_method.c (rb_method_entry_get_without_cache, rb_method_entry):
-	  Fill method cache entry with vm state version, and
-	  check current vm state version for method (cache) look up.
-	  This modification speed-up invalidating of global method cache table.
-	  [Ruby 1.9 - Feature #3905] [ruby-core:36908]
-
-Sun Jun 12 16:19:48 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: fail on Mac OS X. [Bug #4853][ruby-dev:43655]
-
-Sun Jun 12 15:56:08 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c: remove th->transition_for_lock. It's thread unsafe.
-	  [Bug #4723][ruby-dev:43563]
-
-Sun Jun 12 15:47:35 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c: introduce spurious wakeup safe deadlock check.
-	  [Bug #4696][ruby-dev:43554]
-
-Sun Jun 12 13:33:52 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm3_thread_mutex.rb: remove it.
-
-	* benchmark/bm_vm3_thread_mutex[1-3].rb: added 3 benchmarks.
-	    1: one thread with one mutex (no contention).
-	    2: two threads with one mutex (contention).
-	    3: 1000 threads with one mutex (huge number of contention)
-	  Above removed benchmark was type 3.
-	  Therefore, this commit adds type 1 and 2 benchmark.
-
-Sun Jun 12 11:16:59 2011  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: use select() appropriately for sendfile().
-	  Fixed by Eric Wong.  [ruby-core:36150]
-	  (maygvl_copy_stream_wait_readwrite): removed.
-	  (nogvl_copy_stream_sendfile): use nogvl_copy_stream_wait_write and
-	  maygvl_copy_stream_wait_read instead of
-	  maygvl_copy_stream_wait_readwrite.
-
-Sun Jun 12 09:32:13 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* atomic.h (ATOMIC_OR): _InterlockedOr is not available on mingw.h
-	* gc.c (rb_gc_set_params): VM_OBJSPACE is disabled on mingw.
-
-Sun Jun 12 01:07:09 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: edited doc.
-
-Sat Jun 11 23:18:00 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm_core.h (RUBY_VM_SET_TIMER_INTERRUPT, RUBY_VM_SET_INTERRUPT,
-	  RUBY_VM_SET_FINALIZER_INTERRUPT): use atomic ops for preventing
-	  interrupt_flag bit lost. [Bug #4770][ruby-dev:43467]
-	* thread.c (rb_threadptr_execute_interrupts_rec): ditto.
-	* vm_core.h (typedef struct rb_thread_struct): change type of
-	  interrupt_flag to rb_atomic_t.
-	* atomic.h: move atomic ops definition from signal.c.
-	* signal.c: remove atomic ops definition.
-	* common.mk (gc, signal, thread, cont): add to dependency to atomic.h.
-
-Sat Jun 11 23:23:52 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: edited doc.
-
-Sat Jun 11 23:02:36 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/buffering.rb (module OpenSSL):
-	  Buffering#each_byte should return String in accordance with IO in
-	  1.9.
-
-	* test/openssl/test_buffering.rb (class OpenSSL): add tests for getc
-	  and each_byte.
-
-Sat Jun 11 22:41:37 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* time.c: a correction of doc for strftime (%v).
-
-Sat Jun 11 22:30:53 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: replaced doc for strftime based on Time's one.
-
-Sat Jun 11 22:07:56 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (datetime_s_{iso8601,rfc3339,xmlschema,rfc2822,httpdate}):
-	  do not take argument comp.
-
-Sat Jun 11 21:58:31 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: added examples.
-
-Sat Jun 11 19:40:45 2011  Narihiro Nakamura  <authornari@gmail.com>
-
-	* gc.c: expand heap if initial_heap_min_slots is bigger than
-	  HEAP_MIN_SLOTS.
-
-Sat Jun 11 19:42:50 2011  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ChangeLog (vim): set shiftwidth to 2.
-
-Sat Jun 11 19:27:06 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_x509req.c: raise RequestError instead of
-	  CertificateError when Request#to_der gets an error from OpenSSL.
-	  Patch from Ippei Obayashi, see #4420. I cannot write a test for
-	  this... Request does not allow to create broken bytes...
-
-Sat Jun 11 19:34:51 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (Date::(ABBR_)?(MONTH|DAY)NAMES): should be usascii.
-
-Sat Jun 11 19:24:33 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: rewrote doc.
-
-Sat Jun 11 19:04:15 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::GlobOption#non_options): should run
-	  with 1.8.
-
-Sat Jun 11 18:05:57 2011  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* bootstraptest/runner.rb: should initialize $stress to avoid warnings.
-
-Sat Jun 11 18:02:09 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_getc): should be 7bit if ascii.  fixes #4557
-
-Sat Jun 11 16:52:16 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (rb_enc_uint_chr): fix message format. Bug#4869
-
-Sat Jun 11 16:28:25 2011  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/formatters/pretty.rb
-	  (REXML::Formatters::Pretty#write_text),
-	  test/rexml/test_core.rb
-	  (Tester#test_pretty_format_long_text_finite): don't ignore
-	  'width' parameter in pretty formatter. fixes #4498
-	  Reported by Michael Frasca. Thanks!!!
-
-Sat Jun 11 16:11:36 2011  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_core.rb
-	  (Tester#test_pretty_format_long_text_finite): remove needless
-	  assert_nothing_raised.
-
-Sat Jun 11 16:04:03 2011  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/parsers/xpathparser.rb
-	  (REXML::Parsers::XPathParser#parse),
-	  test/rexml/test_elements.rb
-	  (ElementsTester#test_each_with_frozen_condition):
-	  don't modify original XPath. fixes #4161
-	  Reported by Pavel Shved. Thanks!!!
-
-Sat Jun 11 15:53:27 2011  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_elements.rb (ElementsTester): remove needless
-	  prefix from test name.
-
-Sat Jun 11 15:36:36 2011  Martin Duerst  <duerst@it.aoyama.ac.jp>
-	* common.mk: fixed a grammatical error
-
-Sat Jun 11 14:20:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm.c (thread_memsize): don't ignore size of th->local_storage.
-
-Sat Jun 11 10:32:46 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: should quote arch_hdrdir and libpath for the case
-	  installed prefix contains spaces.
-
-Sat Jun 11 10:20:52 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (native_cond_timeout): wrap conditionally used
-	  label.
-
-	* thread_pthread.c (native_sleep): remove unused variable.
-
-Sat Jun 11 10:15:50 2011  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (rb_thread_execute_interrupts): use GetThreadPtr to extract
-	  rb_thread_t from VALUE.
-	  reported by Motohiro KOSAKI.  [ruby-dev:43700]
-
-Sat Jun 11 10:00:49 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_process_options): add missing return type.
-
-Fri Jun 10 23:18:09 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/tk/tcltklib.c (lib_eventloop_core): replace CHECK_INTS with
-	  rb_thread_check_ints(). Because current code can't be compiled.
-
-Fri Jun 10 16:38:13 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): When ruby process is run as Windows
-	  Service the console codepage is not set, GetConsoleCP returns 0.
-	  So on such environment, use GetACP().
-	  http://blogs.msdn.com/b/michkap/archive/2005/02/08/369197.aspx
-	  patched by Rafal Bigaj [ruby-core:36832] [Bug #4854]
-
-Fri Jun 10 14:34:24 2011  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: restore TESTRUN_SCRIPT to "$(srcdir)/test.rb".
-	  TESTRUN_SCRIPT is used by "make run", "make gdb" and so on.
-
-Fri Jun 10 13:01:24 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_module.rb (TestModule#remove_rake_mixins): remove all
-	  module related to Rake.
-
-Fri Jun 10 09:52:38 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* encoding.c:  Mention that Encoding.compatible? can work with more
-	  than just Strings.
-
-Fri Jun 10 02:25:53 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych.rb: updating version to match released gem.
-
-Fri Jun 10 01:06:29 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/bigdecimal (BigDecimal_to_i): Integer#** may return flonum.
-
-Fri Jun 10 00:35:12 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (string_to_c_internal): uses rb_reg_nth_match;
-	* rational.c (string_to_r_internal): ditto.
-
-Fri Jun 10 00:25:03 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* gc.c: remove an unused declaration.
-
-Fri Jun 10 00:24:04 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (string_to_r): Rational#** may return flonum.
-
-Thu Jun  9 23:57:53 2011  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: fix IO.copy_stream interrupt handling.
-	  based on the patch by Eric Wong.  [ruby-core:36156]
-
-	* vm_core.h (rb_thread_call_with_gvl): don't declare here.
-
-	* thread.c: include internal.h.
-	  (rb_thread_execute_interrupts): new function.
-
-	* internal.h (rb_thread_execute_interrupts): declared.
-	  (rb_thread_call_with_gvl): declared.
-
-Thu Jun  9 23:34:01 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* gc.c (rb_objspace_call_finalizer): use rb_typeddata_is_kind_of() for
-	  type check to get rid of a double free when main Thread has singleton
-	  class. [ruby-core:36741] [Bug #4828]
-	* thread.c (rb_obj_is_mutex): add a new utility function.
-	* vm.c (rb_obj_is_thread): ditto.
-
-Thu Jun  9 22:53:49 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* test/ruby/test_thread.rb (TestThread#test_kill_thread_subclass):
-	  add test for Thread.kill with Thread subclass instance.
-
-Thu Jun  9 22:31:47 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* test/ruby/test_thread.rb (TestThread#test_kill_wrong_argument):
-	  test for [ruby-core:35086].
-	  partially forward porting r31402 from ruby_1_9_2 branch.
-
-Thu Jun  9 18:36:00 2011  Kenta Murata <mrkn@mrkn.jp>
-
-	* string.c: Fix the ambiguous description of the behavior of
-	  rb_str_aref_m with a range.  It returns nil when the beginning of
-	  the range is greater than the end of the string rather than the range.
-
-Thu Jun  9 10:57:03 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: Hash subclasses can be read
-	  from YAML files.
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: Hash subclasses can be
-	  dumped to YAML files.
-	* test/psych/test_hash.rb: corresponding test.
-
-Thu Jun  9 09:18:51 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: Ruby modules can be loaded
-	  from YAML files.
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: Ruby modules can be
-	  dumped to YAML files.
-	* test/psych/test_class.rb: corresponding test.
-
-Thu Jun  9 09:05:04 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: Ruby classes can be loaded
-	  from YAML files.
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: Ruby classes can be
-	  dumped to YAML files.
-	* test/psych/test_class.rb: corresponding test.
-
-Wed Jun  8 21:38:57 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* cont.c (root_fiber_alloc): set root fiber's status RUNNING.
-	  in cont_mark() only RUNNING fiber's machine stack is marked.
-	  root fiber's status should be RUNNING at the beginning regardless of
-	  FIBER_USE_NATIVE. [ruby-core:36735] fixes #4827
-
-Tue Jun  7 20:50:11 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* doc/irb/irb.rd: fix typo. patch by Nobuhiro IMAI.
-	  [Bug #4843] [ruby-dev:43639]
-	* doc/irb/irb.rd.ja: ditto.
-	* doc/ChangeLog-YARV: ditto.
-
-Tue Jun  7 18:52:55 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rubygems/user_interaction.rb (Gem::StreamUI#tty?): IO#tty? of
-	  Windows has been fixed at r29969.
-
-	* test/rubygems/test_gem_stream_ui.rb: now can run tests.
-
-Tue Jun  7 18:36:41 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/rubygems/test_gem.rb (TestGem#{test_self_user_home_userprofile,
-	  test_self_user_home_user_drive_and_path}): should simply ignore
-	  meaningless tests instead of skipping them.
-
-Tue Jun  7 18:15:00 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_set_program_name):
-	  should show some messages when skipping tests.
-
-Tue Jun  7 13:59:47 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/date/date_core.c (date_s_today, datetime_s_now): check the
-	  result of localtime_r().
-
-Tue Jun  7 13:36:51 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/extconf.rb: use $defs not $CPPFLAGS to get rid of
-	  command line escape issues on Windows.  fixed #4835.
-
-Tue Jun  7 03:18:45 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_io.rb (TestIO#test_s_{,bin}write): do not create a
-	  file under /tmp. [Bug #4846]
-
-Mon Jun  6 22:51:43 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* cont.c: use #if FIBER_USE_NATIVE instead of #ifdef.
-	  you can suppress use of setcontext for Fiber with compile option
-	  -DFIBER_USE_NATIVE=0
-
-Mon Jun  6 21:59:23 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/test_switch_hitter.rb: added a test.
-
-Mon Jun  6 21:37:45 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: added notes.
-
-Mon Jun  6 21:02:12 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: flattened format to strftimev.
-	* ext/date/date_core.c (date_strftime_internal): taints run.
-
-Mon Jun  6 15:10:17 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/{defines,missing}.h (rb_infinity, rb_nan): move from
-	  defines.h to missing.h.  (couldn't use RUBY_EXTERN there.)
-
-Mon Jun  6 14:35:48 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/rdoc/test_rdoc_markup_pre_process.rb (TestRDocMarkupPreProcess#
-	  {test_include_file,test_include_file_encoding_incompatible}): no
-	  need to write such workaround.  don't hide the bug of ruby. (and the
-	  bug is already fixed.)
-
-Mon Jun  6 14:11:11 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/date/date_core.c (valid_jd_sub): need to convert from VALUE to
-	  double.
-
-	* ext/date/date_core.c (offset_to_sec): get rid of a compiler warning.
-
-Mon Jun  6 14:09:08 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/defines.h (rb_infinity, rb_nan): export for Windows.
-
-Mon Jun  6 10:54:45 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb(Test::Unit::Runner#puke):
-	  Add overriding from MiniTest::Unit#puke. This reverts minitest's fix
-	  that skip messages are hidden when not verbose mode (-v option).
-	  To hide skip messages, use --hide-skip option instead.
-
-Mon Jun  6 10:52:13 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb: don't use autoload.
-
-Mon Jun  6 09:39:43 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/parser.c (parse): release event objects to plug memory
-	leak.  Thanks Mark J. Titorenko!
-
-Sun Jun  5 23:26:15 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* eval.c: remove rb_thread_stop_timer_thread function declaration.
-	  Instead, include vm_core.h.
-	* process.c: ditto.
-
-Sun Jun  5 21:38:51 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (thread_timer): add to care a spurious wakeup.
-	  When native_cond_timedwait() return 0 by spurious wakeup, we
-	  don't have to neither 1) call timer_thread_function and 2)
-	  exit the timer thread.
-
-Sun Jun  5 17:50:01 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (m_real_cwyear): new.  derived from m_cwyear.
-	* ext/date/date_strftime.c: trivial changes.
-
-Sun Jun  5 17:22:01 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/config_list.in: add new options for tcltklib.
-
-Sun Jun  5 10:06:50 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_tmx.h: now does not place decoded data.  allows to
-	  access indirectly via functions on demand.
-	* ext/date/date_strftime.c: ditto.
-	* ext/date/date_core.c: ditto.
-	* ext/date/date_core.c ({d|dt}_lite_to_s): use strftime.
-
-Sun Jun  5 06:22:02 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* NEWS: wrote about changes of date.
-
-Sat Jun  4 16:59:26 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (d_lite_inspect): changed the format.
-	* ext/date/date_core.c: refactoring and fixing some bugs.
-
-Sat Jun  4 11:30:57 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (check_mix_method_i, do_mix_method_i): not mix methods
-	  renamed as nil.
-
-Sat Jun  4 04:04:41 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/rubygems/test_gem_commands_which_command.rb:
-	  "missing" exists on ruby's top source directory. [Bug #4815]
-
-Fri Jun  3 21:48:12 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rubygems/test_case.rb: Refix for test-all in separate directory.
-	  r31147 + r31151.
-
-Fri Jun  3 20:58:47 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/date/date_core.c (d_lite_plus): get rid of compiler warnings.
-
-Fri Jun  3 20:56:40 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/missing.h, numeric.c (round): moved prototype of round()
-	  from numeric.c to missing.h.  (note: round() is C99 feature, so ruby
-	  provides it if not exist in C runtime.)
-
-Fri Jun  3 20:42:04 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit/parallel.rb: Keep $stdin, $stdout before run testcase
-	  and restore after run. Because some test break $stdin, $stdout.
-	  Fixes [Bug #4433] [ruby-core:35353]
-
-Fri Jun  3 19:58:14 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_fflush): windows -- call fsync() only when the FD is tied to
-	  file, because if the FD is pipe, it blocks.
-
-Fri Jun  3 09:27:31 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (URI::HTTP#request_uri): return nil when the uri